WO2024257540A1 - Dispositif, procédé et programme d'aide à la conception de corps pouvant être fixé, et corps pouvant être fixé - Google Patents

Dispositif, procédé et programme d'aide à la conception de corps pouvant être fixé, et corps pouvant être fixé Download PDF

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Publication number
WO2024257540A1
WO2024257540A1 PCT/JP2024/017969 JP2024017969W WO2024257540A1 WO 2024257540 A1 WO2024257540 A1 WO 2024257540A1 JP 2024017969 W JP2024017969 W JP 2024017969W WO 2024257540 A1 WO2024257540 A1 WO 2024257540A1
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Prior art keywords
information
hardness
region
attachment
biological
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English (en)
Japanese (ja)
Inventor
嘉廣 萩原
章男 土井
明 浅井
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Tohoku University NUC
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Tohoku University NUC
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Priority to JP2025527576A priority Critical patent/JPWO2024257540A1/ja
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]

Definitions

  • the present invention relates to a wearable device design support device, a wearable device design support method, a wearable device design support program, and a wearable device.
  • this attachment When this attachment is attached to the surface of a bone, for example, a portion of the attachment surface is separated from the bone surface. This makes it possible to prevent the inhibition of blood flow or vascularization in the surface layer of the bone (for example, the periosteum).
  • Patent No. 7141779 US Patent Application Publication No. 2019/0059965
  • the convex parts of the attachment surface tend to dig into the bone. This tends to reduce the area of the attachment surface that is separated from the bone surface. As a result, blood flow or new blood vessels are inhibited in the surface layer of the bone.
  • the attachment design support device described in Patent Document 1 has a problem in that it is difficult to design an attachment surface having multiple recesses or protrusions that are appropriately provided according to the hardness of the biological surface. This type of problem also occurs in the design of an attachment that is to be attached to a biological surface other than the surface of a bone.
  • One of the objects of the present invention is to easily design a mounting body whose mounting surface has a number of appropriately arranged recesses or protrusions.
  • the wearing body design support device supports the design of a wearing body to be attached to a living body constituent surface, which is a surface of a part that constitutes a living body.
  • the attachment design support device includes a hardness information acquisition unit and an attachment shape information generation unit.
  • the hardness information acquiring unit acquires hardness information that is information representing the hardness of a biological body surface.
  • the attachment shape information generating unit generates attachment shape information representing the three-dimensional shape of the attachment body so that the attachment surface, which is the part of the surface of the attachment body that is attached to the biological structure surface, has multiple concave or convex portions based on the acquired hardness information.
  • a method for supporting design of a mounting body supports the design of a mounting body to be mounted on a living body structural surface, which is a surface of a part that constitutes a living body.
  • the method for supporting the design of the wearable device is as follows: Acquire hardness information which is information representing the hardness of a biological surface; generating, based on the acquired hardness information, shape information of the mounting body that represents a three-dimensional shape of the mounting body such that a mounting surface, which is a portion of the surface of the mounting body that is to be mounted on the living body structure surface, has a plurality of concave or convex portions; This includes:
  • a mounting body design support program causes a computer to execute a process for supporting the design of a mounting body to be mounted on a biological body surface, which is a surface of a part that constitutes a living body.
  • the process is Acquire hardness information which is information representing the hardness of a biological surface; generating, based on the acquired hardness information, shape information of the mounting body that represents a three-dimensional shape of the mounting body such that a mounting surface, which is a portion of the surface of the mounting body that is to be mounted on the living body structure surface, has a plurality of concave or convex portions;
  • the mounting body is mounted on a living body surface that is a surface of a part that constitutes a living body.
  • the attachment surface of the attachment body has multiple concave or convex portions so that the softer the hardness of the biological constituent surface, the larger the area of contact between the biological constituent surface and the attachment surface, which is the portion of the surface of the attachment body that is attached to the biological constituent surface.
  • FIG. 1 is a block diagram illustrating a configuration of a mounting body design support device according to a first embodiment.
  • FIG. 2 is a block diagram illustrating functions of the attachment design support device according to the first embodiment.
  • 1 is an explanatory diagram showing a three-dimensional shape of a basic surface of a living body configuration displayed by the wearing body design support device of the first embodiment.
  • FIG. 1 is an explanatory diagram showing a three-dimensional shape of a basic surface of a living body configuration displayed by the wearing body design support device of the first embodiment.
  • FIG. 4 is an explanatory diagram illustrating a relationship between a first sample position and a projection position used by the wear body design support device of the first embodiment.
  • FIG. 4 is an explanatory diagram illustrating a first sample position and a projection position used by the wear body design support device of the first embodiment.
  • FIG. 3 is an explanatory diagram showing a projection position and an auxiliary position used by the wearable body design support device of the first embodiment.
  • FIG. 3 is an explanatory diagram showing a projection position and an auxiliary position used by the wearable body design support device of the first embodiment.
  • FIG. 3 is an explanatory diagram showing a projection position, an auxiliary position, and a smooth curved surface used by the attachment design support device of the first embodiment.
  • FIG. 3 is an explanatory diagram illustrating a smooth curved surface and a first moving solid used by the wearable body design support device of the first embodiment.
  • FIG. 3 is an explanatory diagram illustrating a smooth curved surface, a first moving solid, and a second moving solid used by the wearable body design support device of the first embodiment.
  • FIG. 1 is an explanatory diagram illustrating an intersecting solid used by the attachment design support device of the first embodiment.
  • FIG. 1 is an explanatory diagram illustrating an intersecting solid used by the attachment design support device of the first embodiment.
  • FIG. 2 is a partial enlarged view of a contact surface of the three-dimensional shape of the attachment of the first embodiment;
  • FIG. 2 is a partial enlarged view of a contact surface of the three-dimensional shape of the attachment of the first embodiment;
  • 4 is a flowchart showing a process executed by the attachment design support device of the first embodiment.
  • FIG. 11 is a block diagram illustrating functions of a wear body design support device according to a first modified example of the first embodiment. 11 is a flowchart illustrating a process executed by a wear body design support device according to a first modified example of the first embodiment. FIG. 11 is a front view of the attachment body of the first modified example of the first embodiment, as viewed from the attachment surface side. 10 is a flowchart showing a process executed by an attachment design support device according to a second embodiment. FIG. 11 is a front view of the mounting body of the second embodiment, as viewed from the mounting surface side. FIG.
  • FIG. 13 is an explanatory diagram illustrating a state in which a plurality of filling solids are closest packed on the arrangement surface in the attachment design support device of the third embodiment;
  • FIG. 11 is a partial enlarged view of a contact surface of the three-dimensional shape of the mounting body of the third embodiment.
  • 13 is a flowchart showing a process executed by the attachment design support device according to the third embodiment.
  • wearable device design support device wearable device design support method, wearable device design support program, and wearable device of the present invention will be described with reference to Figures 1 to 25.
  • the wearable body design support device of the first embodiment supports the design of a wearable body to be worn on a living body surface, which is the surface of a part that constitutes a living body.
  • the attachment design support device includes a hardness information acquisition unit and an attachment shape information generation unit.
  • the hardness information acquiring unit acquires hardness information that is information representing the hardness of a biological body surface.
  • the attachment shape information generating unit generates attachment shape information representing the three-dimensional shape of the attachment body so that the attachment surface, which is the part of the surface of the attachment body that is attached to the biological structure surface, has multiple concave or convex portions based on the acquired hardness information.
  • the mounting body of the first embodiment is mounted on a living body surface, which is the surface of a part that constitutes a living body.
  • the attachment surface of the attachment body has multiple concave or convex portions so that the softer the hardness of the biological constituent surface, the larger the area of contact between the biological constituent surface and the attachment surface, which is the portion of the surface of the attachment body that is attached to the biological constituent surface.
  • the softer the hardness of the living body surface the larger the contact area between the living body surface and the attachment surface. Therefore, when the attachment body is attached to the living body surface, the area of the attachment surface that is separated from the living body surface can be made sufficiently large according to the hardness of the living body surface. As a result, it is possible to suppress the inhibition of blood flow or vascularization in the vicinity of the living body surface.
  • the wearable body design support device 10 includes a processing device 11, a storage device 12, an input device 13, and an output device 14, which are connected to each other via a bus BU1.
  • the wearable body design support device 10 is configured by a computer (in other words, an information processing device).
  • the computer may be a server computer, a desktop computer, a laptop computer, or a tablet computer.
  • the computer may be at least a part of a stationary game machine, a portable game machine, a television set, or a smartphone.
  • the wearable body design support device 10 may be configured by a plurality of devices connected to each other so as to be able to communicate with each other.
  • the processing device 11 executes a program stored in the storage device 12 to control the storage device 12, the input device 13, and the output device 14. In this way, the processing device 11 realizes the functions described below.
  • the processing device 11 is a CPU (Central Processing Unit).
  • the processing device 11 may include an MPU (Micro Processing Unit), a GPU (Graphics Processing Unit), or a DSP (Digital Signal Processor) instead of or in addition to the CPU.
  • MPU Micro Processing Unit
  • GPU Graphics Processing Unit
  • DSP Digital Signal Processor
  • the storage device 12 includes volatile memory and non-volatile memory.
  • the storage device 12 includes at least one of a RAM (Random Access Memory), a ROM (Read Only Memory), a semiconductor memory, an organic memory, a HDD (Hard Disk Drive), and an SSD (Solid State Drive).
  • the input device 13 inputs information from outside the wearable body design support device 10.
  • the input device 13 includes a keyboard and a mouse.
  • the input device 13 may also include a microphone.
  • the output device 14 outputs information to the outside of the wearable body design support device 10.
  • the output device 14 is equipped with a display.
  • the output device 14 may also be equipped with a speaker.
  • the wearable body design support device 10 may also be equipped with a touch panel display that constitutes both the input device 13 and the output device 14.
  • the attachment design support device 10 supports the design of an attachment to be attached to a biological component surface, which is the surface of a biological component that is a part that constitutes a living body.
  • the biological component is a bone including a fractured part.
  • the attachment is a bone fusion plate.
  • the biological component may be a bone, ligament, tendon, or skin that does not include a fractured part.
  • the attachment may be an orthosis or an exercise aid for assisting exercise.
  • the functions of the wearable body design support device 10 include a biological component shape information storage unit 101, a biological component basic surface shape information generation unit 102, a reference direction information reception unit 103, a position information reception unit 104, a projection position information acquisition unit 105, a smooth curved surface information acquisition unit 106, a hardness information acquisition unit 107, and a wearable body shape information generation unit 108.
  • the biological component shape information storage unit 101 stores biological component shape information that represents the three-dimensional shape of the biological component.
  • the biological component shape information is stored in advance in the storage device 12.
  • the biological component shape information may be input to the wearable body design support device 10 via a recording medium or a communication line.
  • the shape information of the biological components is obtained using a technology called CT (Computed Tomography).
  • CT Computer Tomography
  • the shape information of the biological components is information that complies with a standard called DICOM (Digital Imaging and Communications in Medicine).
  • biological component shape information may be obtained using a technology called MRI (Magnetic Resonance Imaging), CR (Computed Radiography), or DR (Digital Radiography).
  • MRI Magnetic Resonance Imaging
  • CR Computer Recimpressed Radiography
  • DR Digital Radiography
  • the biomaterial configuration basic surface shape information generating unit 102 generates biomaterial configuration basic surface shape information that represents the three-dimensional shape of the biomaterial configuration basic surface.
  • the biomaterial configuration basic surface is a surface on the surface of the biomaterial component or in the vicinity of the surface of the biomaterial component, whose CT value matches a preset reference value.
  • the reference value is a CT value corresponding to the cortical bone.
  • the biomaterial configuration basic surface may be expressed as a bone isosurface.
  • the body configuration basic surface shape information generating unit 102 generates body configuration basic surface shape information based on the body component shape information stored in the body component shape information storage unit 101 .
  • the reference direction information receiving unit 103 and the position information receiving unit 104 display, via the output device 14, the three-dimensional shape of the biomaterial configuration basic surface BS represented by the biomaterial configuration basic surface shape information generating unit 102, as shown in Figures 3 and 4.
  • Figures 3 and 4 show the biomaterial configuration basic surface BS as viewed from different directions.
  • the biomaterial configuration basic surface BS includes the fractured area BR.
  • the reference direction information receiving unit 103 receives reference direction information that indicates a reference direction RD that is a reference direction with respect to the basic plane BS of the body structure.
  • the position information receiving unit 104 receives position information that indicates the position of a wearer corresponding area AR, which is an area that corresponds to the wearer, on a reference plane PL that is a plane perpendicular to the reference direction RD.
  • the wear body corresponding area AR has a rectangular shape.
  • the wear body corresponding area AR has a minimum rectangular shape that includes the shape of the wear body.
  • the shape of the wear body may be set based on information input by a user of the wear body design support device 10 via the input device 13.
  • the shape of the wear body may also be set in advance.
  • the position information and the reference direction information are input by a user of the wear body design support device 10 via the input device 13 .
  • the projection position information acquisition unit 105 acquires projection position information based on the biometric basic surface shape information generated by the biometric basic surface shape information generation unit 102, the reference direction information accepted by the reference direction information acceptance unit 103, and the position information accepted by the position information acceptance unit 104.
  • the projection position information represents N projection positions PP-1 to PP-N obtained by projecting N first specimen positions SP-1 to SP-N in the mounting corresponding area AR on the reference plane PL onto the basic plane BS of the living body structure in the reference direction RD.
  • N represents an integer of 4 or more. In this example, N represents 15.
  • the N first sample positions SP-1 to SP-N are positioned in a lattice pattern.
  • the N first sample positions SP-1 to SP-N are positioned at equal intervals in the short side direction of the attachment corresponding area AR at a predetermined short side interval, and are positioned at equal intervals in the long side direction of the attachment corresponding area AR at a predetermined long side interval.
  • the short side interval and the long side interval are different from each other. Note that the short side interval and the long side interval may be equal to each other.
  • the projection position information acquisition unit 105 may correct the projection position information representing the N projection positions PP-1 to PP-N, as disclosed in Japanese Patent No. 7141779.
  • the smooth surface information acquisition unit 106 acquires auxiliary position information based on the projection position information acquired by the projection position information acquisition unit 105.
  • the auxiliary position information represents M auxiliary positions.
  • M represents an integer of 2 or greater.
  • M represents the number (20 in this example) of first sample positions SP-n located on the four sides that make up the outer edge of the wearing body corresponding area AR (16 in this example) plus the number (4 in this example) of first sample positions SP-n located at the corners that make up the outer edge of the wearing body corresponding area AR.
  • the M auxiliary positions consist of a short side extension auxiliary position group consisting of six short side extension auxiliary positions SU-1, SU-2, SU-3, SD-13, SD-14, and SD-15, a long side extension auxiliary position group consisting of ten long side extension auxiliary positions SR-3, SR-6, SR-9, SR-12, SR-15, SL-1, SL-4, SL-7, SL-10, and SL-13, and a corner extension auxiliary position group consisting of four corner extension auxiliary positions SC-1, SC-3, SC-13, and SC-15.
  • the smooth surface information acquisition unit 106 acquires smooth surface information representing a smooth surface SS, which is a smooth surface defined by using, as a control point group, the N projection positions PP-1 to PP-N represented by the projection position information acquired by the projection position information acquisition unit 105 and the M auxiliary positions SU-1, SU-2, SU-3, SD-13, SD-14, SD-15, SR-3, SR-6, SR-9, SR-12, SR-15, SL-1, SL-4, SL-7, SL-10, SL-13, SC-1, SC-3, SC-13, and SC-15 represented by the acquired auxiliary position information.
  • a smooth surface SS which is a smooth surface defined by using, as a control point group, the N projection positions PP-1 to PP-N represented by the projection position information acquired by the projection position information acquisition unit 105 and the M auxiliary positions SU-1, SU-2, SU-3, SD-13, SD-14, SD-15, SR-3, SR-6, SR-9, SR-12, SR-15,
  • the smooth surface SS is a B-spline surface.
  • the smooth surface may be a spline surface other than a B-spline surface (for example, a NURBS (Non-Uniform Rational B-Spline) surface) or a Bezier surface.
  • NURBS Non-Uniform Rational B-Spline
  • the smooth surface information acquisition unit 106 may acquire smooth surface information representing the smooth surface SS, which is a smooth surface defined by using only the N projection positions PP-1 to PP-N as the control point group, without using the auxiliary positions as the control point group.
  • the hardness information acquisition unit 107 acquires hardness information, which is information that represents the hardness of the biological component surface, based on the biological component shape information stored in the biological component shape information storage unit 101, the reference direction information accepted by the reference direction information acceptance unit 103, and the position information accepted by the position information acceptance unit 104.
  • the biological component surface is the surface of the biological component.
  • the hardness of the biological component surface is represented by the CT value at the position where the second specimen position in the attachment corresponding area AR on the reference plane PL is projected onto the biological component surface in the reference direction RD.
  • the hardness information may be information representing bone density estimated based on the CT value instead of the CT value.
  • the bone density V BMD may be estimated based on the following formula 1 and the CT value V CT . The higher the bone density, the harder the body's structural surface is.
  • the hardness information acquisition unit 107 acquires hardness information for each of the multiple second sample positions within the attachment corresponding area AR on the reference plane PL.
  • the multiple second sample positions used by the hardness information acquisition unit 107 respectively match the N first sample positions SP-1 to SP-N used by the projection position information acquisition unit 105.
  • the multiple second sample positions used by the hardness information acquisition unit 107 may be positions different from the N first sample positions SP-1 to SP-N used by the projection position information acquisition unit 105. Also, the number of second sample positions used by the hardness information acquisition unit 107 may be different from the number of first sample positions used by the projection position information acquisition unit 105. Also, the hardness information acquisition unit 107 may acquire only hardness information for one second sample position within the attachment corresponding area AR on the reference plane PL.
  • the attachment shape information generation unit 108 generates attachment shape information representing the three-dimensional shape of the attachment based on the smooth surface information acquired by the smooth surface information acquisition unit 106 and the hardness information acquired by the hardness information acquisition unit 107.
  • the wearer shape information generating unit 108 generates first moving solid information that represents the three-dimensional shape of a first moving solid MC1 that is formed by moving the smooth curved surface SS a first distance along the reference direction RD (in this example, in the opposite direction to the reference direction RD).
  • the wearer shape information generating unit 108 generates second moving solid information representing the three-dimensional shape of a second moving solid MC2 formed by moving the wearer corresponding area AR along the reference direction RD (in this example, toward the reference direction RD) a second distance that is longer than the first distance.
  • the attachment shape information generating unit 108 generates intersection solid information representing the three-dimensional shape of an intersection solid CC generated by the intersection of the first moving solid MC1 and the second moving solid MC2 based on the generated first moving solid information and second moving solid information.
  • the intersection solid CC corresponds to a basic solid having no concave or convex parts
  • the intersection solid information corresponds to basic solid information representing the basic solid.
  • the wearer shape information generating unit 108 generates wearer shape information based on the hardness information acquired by the hardness information acquiring unit 107 and the generated intersection solid information so that the wearer surface has multiple convex portions.
  • the wearer surface is the portion of the surface of the wearer that is attached to the biological structure surface.
  • the wearer shape information generating unit 108 may generate wearer shape information so that the wearer surface has multiple concave portions instead of multiple convex portions.
  • the convex portion is frustum-shaped.
  • the multiple convex portions are positioned in a square lattice pattern.
  • the centers of the multiple convex portions are respectively located at multiple intersections of multiple first straight lines that are parallel to the short sides of the wearable body corresponding area AR and are equally spaced in the long side direction of the wearable body corresponding area AR, and multiple second straight lines that are parallel to the long sides of the wearable body corresponding area AR and are equally spaced in the short side direction of the wearable body corresponding area AR.
  • the multiple protrusions may each have a position where the multiple intersections are rotated a predetermined rotation angle around a rotation axis along the reference direction RD.
  • the multiple protrusions may also be positioned in a diamond lattice, hexagonal lattice, or rectangular lattice pattern.
  • the convex portion may also be in the shape of a quadrangular pyramid.
  • the top surface of the convex portion (in other words, the tip surface) may be rectangular with short sides parallel to the short sides of the attachment corresponding area AR and long sides parallel to the long sides of the attachment corresponding area AR.
  • the short sides of the top surface of the convex portion and the long sides of the top surface of the convex portion may extend in a direction rotated by a predetermined rotation angle around a rotation axis along the reference direction RD with respect to the short sides of the attachment corresponding area AR and the long sides of the attachment corresponding area AR, respectively.
  • the multiple protrusions protrude a predetermined protrusion distance in the reference direction RD from the surface of the intersecting solid CC that is closer to the biological body surface.
  • the top surfaces of the multiple protrusions are located within a curved surface obtained by moving the surface of the intersecting solid CC that is closer to the biological body surface by a predetermined protrusion distance in the reference direction RD.
  • each convex portion may be located in a plane perpendicular to the normal direction at the center of the convex portion on the surface of the intersecting solid CC that is closer to the biological surface.
  • the top surface of each convex portion may also form part of the surface of a sphere or ellipsoid.
  • the corners or edges (in other words, the edges) of the concave or convex portions may be rounded (in other words, they may have a shape that has been filleted).
  • the edges of the top surface of each convex portion may be rounded.
  • the attachment shape information generating unit 108 obtains a representative value of the hardness represented by the hardness information obtained for a plurality of second sample positions.
  • the representative value is the average value for a plurality of second sample positions.
  • the representative value may be a minimum value, a maximum value, a median value, or an intermediate value between the maximum value and the minimum value.
  • the wearing body shape information generating unit 108 determines unevenness shape parameters based on the acquired representative value.
  • the unevenness shape parameters are information that specifies the shape and positions of multiple convexities.
  • the wearing body shape information generating unit 108 determines the unevenness shape parameters so that the softer the hardness represented by the acquired representative value, the larger the area of contact between the biological structure surface and the wearing surface.
  • the uneven shape parameters include the inter-convex distance, which is the distance between adjacent convex parts, and the diameter of the top surface of each convex part.
  • the attachment shape information generating unit 108 determines the uneven shape parameters so that the inter-convex distance becomes shorter (in other words, the total number of convex parts increases) as the hardness represented by the acquired representative value becomes softer, and the diameter of the top surface of each convex part is constant regardless of the hardness represented by the acquired representative value.
  • the diameter of the top surface of each convex part and the height of each convex part are each preset values.
  • the distance between the protrusions is 1 mm to 10 mm.
  • the diameter of the top surface of each protrusion is 0.1 to 5 mm.
  • the height of each protrusion is 0.3 mm to 2 mm.
  • the wearable body shape information generating unit 108 may determine the unevenness shape parameters so that the diameter of the top surface of each convex portion increases as the hardness represented by the acquired representative value becomes softer, and the distance between the convex portions is constant regardless of the hardness represented by the acquired representative value.
  • the wearable body shape information generating unit 108 may determine the unevenness shape parameters so that the diameter of the top surface of each convex portion increases as the hardness represented by the acquired representative value becomes softer, and the distance between the convex portions is shorter.
  • the wearable body shape information generating unit 108 generates wearable body shape information based on the generated intersection solid information and the determined uneven shape parameters.
  • the wearable body shape information represents a three-dimensional shape in which convex portion-constituting solids CP corresponding to each of a plurality of convex portions having shapes and positions specified by the uneven shape parameters are added to the intersection solid CC on the surface CS of the intersection solid CC represented by the intersection solid information that is closer to the biological body configuration surface.
  • FIGS. 14 and 15 are partial enlarged views of the contact surface of the three-dimensional shape of the attachment.
  • FIG. 14 is a perspective view of the three-dimensional shape of the attachment.
  • FIG. 15 is a view of the three-dimensional shape of the attachment in the direction opposite to the reference direction RD.
  • the wearer shape information generating unit 108 generates wearer shape information representing the three-dimensional shape of the wearer by adding convex portion-constituting solids corresponding to each of the multiple convex portions to the intersection solid CC.
  • the wearer shape information generating unit 108 may also generate wearer shape information representing the three-dimensional shape of a wearer whose surface has multiple convex portions by removing a portion of the intersection solid CC near the surface of the living body that is closer to the living body configuration surface from the intersection solid CC.
  • the attachment shape information generating unit 108 may perform a process of rounding at least a part of the portion corresponding to the corner of the intersection solid body CC (in other words, fillet processing).
  • the description of the functions of the wear body design support device 10 may be supplemented by the following description of the operation of the wear body design support device 10.
  • the wear body design support device 10 executes the process shown in FIG. 16 in accordance with an execution instruction input by a user of the wear body design support device 10 via the input device 13 .
  • the wearable body design support device 10 generates body configuration basic surface shape information based on body component shape information stored in the storage device 12 (step S101 in FIG. 16).
  • the wearable body design support device 10 displays the three-dimensional shape of the basic body structure surface BS represented by the basic body structure surface shape information generated in step S101 via the output device 14 (step S102 in FIG. 16).
  • the wearable device design support device 10 waits until it receives position information representing the position of the wearable device corresponding area AR on the reference plane PL and reference direction information representing the reference direction RD (the "No" route of step S103 in FIG. 16).
  • the wearable device design support device 10 accepts the position information and reference direction information, determines "Yes” in step S103, and proceeds to step S104.
  • the wearable device design support device 10 acquires projection position information and auxiliary position information based on the basic surface shape information of the body structure generated in step S101 and the position information and reference direction information received in step S103 (step S104 in FIG. 16).
  • the wearable body design support device 10 acquires smooth surface information based on the projection position information and auxiliary position information acquired in step S104 (step S105 in FIG. 16).
  • the wearable body design support device 10 acquires first moving three-dimensional information and second moving three-dimensional information based on the smooth surface information acquired in step S105 and the position information and reference direction information accepted in step S103 (step S106 in FIG. 16).
  • the wearable body design support device 10 generates intersecting three-dimensional information based on the first moving three-dimensional information and the second moving three-dimensional information acquired in step S106 (step S107 in FIG. 16).
  • the wearable body design support device 10 acquires hardness information based on the biological component shape information stored in the storage device 12 and the position information and reference direction information received in step S103 (step S108 in FIG. 16).
  • the attachment body design support device 10 determines concave-convex shape parameters based on the hardness information acquired in step S108 (step S109 in FIG. 16).
  • the wear body design support device 10 generates wear body shape information based on the intersection solid information generated in step S107 and the concave-convex shape parameters determined in step S109 (step S110 in FIG. 16).
  • the attachment design support device 10 ends the process of FIG.
  • steps S108 and S109 may be performed at any time between the processes of steps S103 and S110.
  • the wearable body may be manufactured using a technology called 3D printing or three-dimensional modeling.
  • the wearable body 1 is manufactured by inputting the wearable body shape information generated by the wearable body design support device 10 into a 3D printer, which then forms the three-dimensional shape represented by the wearable body shape information.
  • the wearing body 1 is attached to a living body surface, which is the surface of a part that constitutes a living body.
  • the wearing body 1 has a mounting surface 1a, which is the part of the surface of the wearing body 1 that is attached to the living body surface.
  • the wearing body 1 has a plurality of concave or convex portions on the mounting surface 1a such that the softer the hardness of the living body surface is, the larger the area of contact between the living body surface and the mounting surface 1a is.
  • Fig. 17 is a front view of the mounting body 1 as viewed from the mounting surface 1a side of the mounting body 1. In Fig. 17, the multiple recesses or protrusions are represented by a dot pattern for the sake of simplicity.
  • the wearable body design support device 10 of the first embodiment supports the design of a wearable body to be worn on a living body surface, which is the surface of a part that constitutes a living body.
  • the attachment design support device 10 includes a hardness information acquisition unit 107 and an attachment shape information generation unit 108 .
  • the hardness information acquiring unit 107 acquires hardness information that is information that indicates the hardness of a biological body surface.
  • the wearer shape information generating unit 108 generates wearer shape information representing the three-dimensional shape of the wearer so that the wearer's surface, which is the part of the surface of the wearer that is attached to the biological structure surface, has multiple concave or convex portions, based on the acquired hardness information.
  • the wearable body shape information generating unit 108 generates wearable body shape information such that the softer the hardness represented by the acquired hardness information, the larger the area of contact between the biological body surface and the wearable surface.
  • the wearable body design support device 10 of the first embodiment generates wearable body shape information based on intersection solid information and concave-convex shape parameters. Note that, instead of the intersection solid information, the wearable body design support device 10 may use basic solid information representing a basic solid that is stored in advance in the wearable body design support device 10, or basic solid information representing a basic solid that is input to the wearable body design support device 10.
  • the attachment body 1 of the first embodiment is attached to a living body surface, which is the surface of a part that constitutes a living body.
  • the attachment body 1 has a plurality of concave or convex portions on the attachment surface 1a so that the softer the hardness of the living body surface is, the larger the contact area between the living body surface and the attachment surface 1a, which is the part of the surface of the attachment body that is attached to the living body surface.
  • the softer the hardness of the living body surface the larger the area of contact between the living body surface and the attachment surface 1a. Therefore, when the attachment body 1 is attached to the living body surface, the area of the attachment surface 1a that is separated from the living body surface can be made sufficiently large according to the hardness of the living body surface. As a result, it is possible to prevent the inhibition of blood flow or vascularization in the vicinity of the living body surface.
  • the attachment surface 1a of the attachment body 1 in the first embodiment is curved. Note that the entire attachment surface 1a of the attachment body 1 or a part of the attachment surface 1a may be flat.
  • the wearable body design support device according to the first modified example of the first embodiment differs from the wearable body design support device according to the first embodiment in that the wearable body design support device according to the first modified example of the first embodiment is capable of setting an area in which the wearable surface does not have a concave or convex portion.
  • the following description will focus on the differences.
  • the same reference numerals as those used in the first embodiment are used to denote the same or substantially similar items.
  • the functions of the wearable body design support device 10A of the first modified example of the first embodiment include, in addition to the functions of the wearable body design support device 10 of the first embodiment, a non-convexo-concave region information receiving unit 109.
  • the non-concave region information receiving unit 109 corresponds to the region information acquisition unit.
  • the non-convex/concave area information receiving unit 109 receives non-concave/concave area information that represents non-concave areas, which are areas of the mounting surface that do not have any concave or convex parts.
  • the non-concave/concave area information receiving unit 109 acquires non-concave/concave area information by receiving the non-concave/concave area information.
  • the unevenness-free area information is obtained by inputting the information by the user of the wearable body design support device 10 via the input device 13.
  • the unevenness-free area information may be obtained by the wearable body design support device 10 generating the information based on biological component shape information instead of inputting the information by the user.
  • the unevenness-free area is an area of the wearable surface that corresponds to the vicinity of the fractured part BR.
  • the wearer shape information generating unit 108 of the first modified example of the first embodiment generates wearer shape information so that the wearer surface does not have any concave or convex parts in the non-convex area represented by the non-convex area information acquired by the non-convex area information receiving unit 109.
  • the wearing body shape information generating unit 108 generates the wearing body shape information so that the wearing surface has no concave or convex parts in the non-concave area represented by the non-concave area information acquired by the non-concave area information receiving unit 109, and so that the wearing surface has multiple concave or convex parts in areas of the wearing surface other than the non-concave area.
  • the description of the functions of the wear body design support device 10A according to the first modified example of the first embodiment may be supplemented by the following description of the operation of the wear body design support device 10A.
  • the wearable body design support device 10A of the first modified example of the first embodiment executes the process of step S107 in FIG. 16, and then executes the processes of steps S201A, S108, S109, and S110A in FIG. 19.
  • the wear body design support device 10A waits until it receives non-convex area information (the "No" route of step S201A in FIG. 19).
  • the wearable body design support device 10A accepts the non-concave area information, determines "Yes" in step S201A, and proceeds to step S108.
  • the wearable body design support device 10A acquires hardness information based on the biological component shape information stored in the storage device 12 and the position information and reference direction information received in step S103 of FIG. 16 (step S108 of FIG. 19).
  • the wearable body design support device 10A determines the unevenness shape parameters based on the hardness information acquired in step S108 (step S109 in FIG. 19). Note that the wearable body design support device 10A may determine the unevenness shape parameters based only on the hardness information for positions other than the unevenness-free region represented by the unevenness-free region information received in step S201A, among the acquired hardness information.
  • the wearable body design support device 10A generates wearable body shape information based on the intersecting solid information generated in step S107 of FIG. 16, the non-convex/concave area information received in step S201A, and the concave/convex shape parameters determined in step S109 (step S110A of FIG. 19).
  • the attachment design support device 10A ends the process of FIG.
  • steps S201A, S108, and S109 may be performed at any timing between the process of step S103 and the process of step S110A.
  • the wearable body may be manufactured using a technique called 3D printing or three-dimensional modeling.
  • wearable body shape information generated by wearable body design support device 10A is input to a 3D printer, and the 3D printer forms the three-dimensional shape represented by the wearable body shape information, thereby manufacturing wearable body 1A.
  • the mounting surface 1Aa does not have any concave or convex portions in the non-relief region NPR, and the mounting surface 1Aa has multiple concave or convex portions in regions PR1, PR2 of the mounting surface 1Aa other than the non-relief region NPR.
  • Fig. 20 is a front view of the mounting body 1A as viewed from the mounting surface 1Aa side.
  • the multiple recesses or protrusions are represented by a dot pattern for the sake of simplicity.
  • the mounting body 1A may have a plurality of non-relief regions NPR defined therein.
  • the wear body design support device 10A of the first modified example of the first embodiment the same actions and effects as those of the wear body design support device 10 of the first embodiment are achieved. Furthermore, the wear body design support device 10A of the first modified example of the first embodiment is equipped with a region information acquisition unit (in this example, non-convexo-concave region information receiving unit 109) that acquires region information (in this example, non-concave region information) representing the region included in the wear surface.
  • the mounting body shape information generating unit 108 generates mounting body shape information so that the mounting surface does not have any concave or convex parts in the area represented by the acquired area information.
  • the second embodiment of the wearable body design support device differs from the first embodiment in that it determines concave-convex shape parameters for each of a plurality of divided regions.
  • the following description will focus on the differences.
  • components that are given the same reference numerals as those used in the first embodiment are the same or substantially similar.
  • the hardness information acquisition unit 107 of the wear body design support device 10 of the second embodiment generates a plurality of divided regions by dividing the wear body corresponding region AR (in other words, divides the wear body corresponding region AR into a plurality of divided regions).
  • the number of divided regions is four. Note that the number of divided regions may be two, three, five or more.
  • the hardness information acquisition unit 107 divides the wearable body corresponding area AR at equal intervals in the long side direction of the wearable body corresponding area AR. Note that the hardness information acquisition unit 107 may divide the wearable body corresponding area AR at equal intervals in the short side direction of the wearable body corresponding area AR instead of or in addition to the long side direction of the wearable body corresponding area AR.
  • the hardness information acquisition unit 107 may also divide the area AR corresponding to the attached object based on the hardness information. In this case, the hardness information acquisition unit 107 may divide the area AR corresponding to the attached object so that the hardness information acquired for the positions included in each divided area indicates hardness that is close to each other.
  • the hardness information acquisition unit 107 may also receive divided area information input by a user of the attachment design support device 10 via the input device 13.
  • the divided area information represents multiple divided areas.
  • the hardness information acquisition unit 107 acquires hardness information for each of the multiple division regions that have been generated. In this example, the hardness information acquisition unit 107 acquires hardness information for each of the multiple second sample positions in each division region. Note that the hardness information acquisition unit 107 may acquire only hardness information for one second sample position in each division region.
  • the area where each divided area is projected onto the biological body surface in the reference direction RD corresponds to an area included in the biological body surface. Therefore, in this example, when the hardness information acquisition unit 107 acquires hardness information for a divided area, this corresponds to the hardness information acquisition unit 107 acquiring hardness information for an area that corresponds to the divided area and is included in the biological body surface.
  • the wearable body shape information generating unit 108 determines uneven shape parameters for each of the multiple divided regions based on the hardness information acquired for that divided region. In this example, the wearable body shape information generating unit 108 determines uneven shape parameters for each of the multiple divided regions such that the softer the hardness represented by the representative value acquired for that divided region, the higher the contact rate with the region that corresponds to that divided region and is included in the biological configuration surface.
  • the contact rate for an area included in the biological structure surface is the ratio of the area of contact between the area-facing portion of the attachment surface that faces the area in question and the area of the area-facing portion.
  • the area of contact between the region included in the biological tissue surface and the attachment surface of the attachment body may vary depending on the hardness of the region. Therefore, the contact rate may be determined based on the shape of the attachment surface of the attachment body.
  • the contact rate for an area included in the biological body surface is the ratio of the sum of the areas of the top surface-nearby areas of multiple convex parts included in the area-facing part, which is the part of the attachment surface that faces the area, to the area of the area-facing part.
  • the area near the top surface of a convex part is the area consisting of the part of the side surface of the convex part between the top surface of the convex part and the curved surface near the top surface, and the top surface of the convex part.
  • the curved surface near the top surface is a curved surface obtained by moving a curved surface formed by the top surfaces of multiple convex portions (in this example, the surface of the intersecting solid CC that is closer to the biological surface, a predetermined protruding distance in the reference direction RD) a predetermined nearby distance in the opposite direction to the reference direction RD.
  • the nearby distance is a length between 0 ⁇ m and 300 ⁇ m. In this example, the nearby distance is 200 ⁇ m.
  • the contact rate with respect to an area included in the biological body surface may be the ratio of the sum of the areas of the top faces of multiple convex portions included in the area-facing portion, which is the portion of the attachment surface that faces the area, to the area of the area-facing portion.
  • the attachment shape information generating unit 108 determines the concave-convex shape parameters for each of the multiple divided regions such that the distance between the convex portions becomes shorter as the hardness represented by the representative value obtained for that divided region becomes softer, and the diameter of the top surface of each convex portion remains constant regardless of the hardness represented by the representative value.
  • the wearable body shape information generating unit 108 may determine the unevenness shape parameters for each of the multiple divided regions such that the diameter of the top surface of each convex portion increases as the hardness represented by the representative value obtained for that divided region decreases, and the distance between the convex portions is constant regardless of the hardness represented by the representative value.
  • the wearable body shape information generating unit 108 may determine the unevenness shape parameters for each of the multiple divided regions such that the diameter of the top surface of each convex portion increases as the hardness represented by the representative value obtained for that divided region decreases, and the distance between the convex portions is constant.
  • the wearing body shape information generating unit 108 generates wearing body shape information based on the generated intersection solid information and the concave-convex shape parameters determined for each of the multiple divided regions.
  • the wearing body shape information represents a three-dimensional shape in which a convex-portion-constituting solid corresponding to each of a plurality of convex portions having a shape and position specified by the concave-convex shape parameters is added to the intersection solid in a region corresponding to each of the multiple divided regions on a surface of the intersection solid represented by the intersection solid information that is closer to the biological body configuration surface.
  • the description of the functions of the wear body design support device 10 of the second embodiment may be supplemented by the following description of the operation of the wear body design support device 10.
  • the wearable device design support device 10 of the second embodiment executes the processing of step S107 in FIG. 16, and then executes the processing of steps S301B, S108B, S109B, and S110B in FIG. 21.
  • the wearable device design support device 10 generates multiple divided regions by dividing the wearable device corresponding area AR (in other words, divides the wearable device corresponding area AR into multiple divided regions) (step S301B in FIG. 21).
  • the wearable body design support device 10 acquires hardness information for each divided area generated in step S301B based on the biological component shape information stored in the storage device 12 and the position information and reference direction information received in step S103 of FIG. 16 (step S108B of FIG. 21).
  • the attachment design support device 10 determines the unevenness shape parameters for each divided region generated in step S301B based on the hardness information acquired in step S108B (step S109B in FIG. 21).
  • the wearable device design support device 10 generates wearable device shape information based on the intersecting solid information generated in step S107 of FIG. 16 and the concave-convex shape parameters for each divided area determined in step S109B (step S110B of FIG. 21).
  • the attachment design support device 10A ends the process of FIG.
  • steps S301B, S108B, and S109B may be performed at any timing between the processes of steps S103 and S110B.
  • the wearable body may be manufactured using a technique called 3D printing or three-dimensional modeling.
  • wearable body shape information generated by wearable body design support device 10 is input to a 3D printer, and the 3D printer forms the three-dimensional shape represented by the wearable body shape information, thereby manufacturing wearable body 1B.
  • the mounting body 1B of the second embodiment corresponds to a number of divided regions (four in this example), and the mounting surface 1Ba has a number of recesses or protrusions in each of the multiple regions DR1 to DR4 included in the mounting surface 1Ba.
  • FIG. 22 is a front view of the attachment 1B as viewed from the attachment surface 1Ba side. Note that in FIG. 22, the multiple recesses or protrusions are represented by a dot pattern to simplify the illustration, and the darker the color represented by the dot pattern, the higher the contact rate.
  • the hardness of the biological constitutive surface to which region DR1 is attached is the softest
  • the hardness of the biological constitutive surface to which region DR4 is attached is the hardest
  • the hardness of the biological constitutive surface to which regions DR2 and DR3 are attached is intermediate between the hardness of the biological constitutive surface to which region DR1 is attached and the hardness of the biological constitutive surface to which region DR4 is attached.
  • the mounting surface 1Ba of the mounting body 1B has a plurality of convex portions with the highest contact rate in region DR1, a plurality of convex portions with the lowest contact rate in region DR4, and a plurality of convex portions in regions DR2 and DR3 with contact rates between the contact rate in region DR1 and the contact rate in region DR4.
  • the mounting body 1B may have at least one non-relief region.
  • the wear body design support device 10 of the second embodiment the same actions and effects as those of the wear body design support device 10 of the first embodiment are achieved. Furthermore, in the second embodiment of the wearable body design support device 10, the contact rate for a region included in the biological body configuration surface is the ratio of the area of contact between the region and a region-facing portion of the wearable surface, which is a portion of the wearable surface facing the region, to the area of the region-facing portion.
  • the hardness information acquisition unit 107 acquires hardness information for each of the first region and the second region included in the biological body configuration surface.
  • the wearable body shape information generation unit 108 When the hardness represented by the hardness information for the first region is softer than the hardness represented by the hardness information for the second region, the wearable body shape information generation unit 108 generates wearable body shape information such that the contact rate for the first region is higher than the contact rate for the second region.
  • attachment body 1B whose attachment surface 1Ba has multiple recesses or protrusions that are provided so as to have different contact rates with multiple regions included in the body surface.
  • the wearable body shape information generation unit 108 when the hardness represented by the hardness information for the first region is softer than the hardness represented by the hardness information for the second region, the wearable body shape information generation unit 108 generates wearable body shape information such that the distance between the convex portions in the first region is shorter than the distance between the convex portions in the second region.
  • the same actions and effects as those of the mounting body 1 of the first embodiment are achieved.
  • the contact rate with respect to the region included in the bioconstituting surface is the ratio of the area of contact between the region facing portion of the attachment surface 1Ba, which is the portion facing the region, and the region itself to the area of the region facing portion.
  • the multiple concave or convex portions are configured such that when the hardness of the bioconstituting surface in a first region included in the bioconstituting surface is softer than the hardness of the bioconstituting surface in a second region included in the bioconstituting surface, the contact rate with the first region is higher than the contact rate with the second region.
  • the area of the portion of the attachment surface 1Ba that is separated from the bioconstitutive surface in each region can be made sufficiently large according to the hardness of the bioconstitutive surface. As a result, it is possible to prevent the inhibition of blood flow or vascularization in the vicinity of the bioconstitutive surface.
  • the third embodiment of the wearable body design support device differs from the first embodiment in that the positions of multiple convex portions are determined based on the distribution of hardness of a biological body surface.
  • the following description will focus on the differences.
  • the same reference numerals as those used in the first embodiment denote the same or substantially similar objects.
  • the hardness information acquisition unit 107 of the third embodiment acquires hardness distribution information based on the biological component shape information stored in the biological component shape information storage unit 101, the reference direction information accepted by the reference direction information acceptance unit 103, and the position information accepted by the position information acceptance unit 104.
  • the hardness distribution information includes hardness information that indicates the hardness of the biological body surface at each of a plurality of distribution configuration positions included in the biological body surface.
  • the plurality of distribution configuration positions correspond to a plurality of positions where a plurality of third specimen positions within the attachment corresponding area AR in the reference plane PL are respectively projected onto the biological body surface in the reference direction RD.
  • the multiple third specimen positions are located in a square lattice pattern in the wearing body corresponding area AR.
  • the multiple third specimen positions may be located such that the multiple positions projected in the reference direction RD of the multiple third specimen positions in the wearing body corresponding area AR on the reference plane PL onto the surface of the intersecting solid CC that is closer to the biological body surface are located in a square lattice pattern on that surface.
  • the attachment shape information generation unit 108 generates attachment shape information representing the three-dimensional shape of the attachment based on the smooth surface information acquired by the smooth surface information acquisition unit 106 and the hardness distribution information acquired by the hardness information acquisition unit 107.
  • the wearable body shape information generating unit 108 generates intersecting solid information representing the intersecting solid CC based on the smooth surface information, as in the first embodiment.
  • the intersecting solid CC corresponds to a basic solid having no concave or convex parts
  • the intersecting solid information corresponds to basic solid information representing the basic solid.
  • the surface closer to the biological body configuration surface constitutes part of the wearable surface.
  • the attachment shape information generating unit 108 generates attachment shape information based on the hardness distribution information acquired by the hardness information acquiring unit 107 and the generated intersection solid information so that the attachment surface has multiple convex portions.
  • the attachment surface is the portion of the surface of the attachment that is attached to the biological structure surface.
  • the convex portion is in the shape of a truncated cone.
  • the convex portion may also be in the shape of a truncated pyramid.
  • the multiple convex portions protrude a predetermined protruding distance in the reference direction RD from the surface of the intersecting solid CC that is closer to the biological body surface.
  • the top surfaces of the multiple convex portions are located within a curved surface obtained by moving the surface of the intersecting solid CC that is closer to the biological body surface by a predetermined protruding distance in the reference direction RD.
  • each convex portion may be located in a plane perpendicular to the normal direction at the center of the convex portion on the surface of the intersecting solid CC that is closer to the biological surface.
  • the top surface of each convex portion may also form part of the surface of a sphere or ellipsoid.
  • the attachment shape information generating unit 108 first determines the positions of the multiple filling solids by closely packing the multiple filling solids on the placement surface, which is the surface of the intersecting solid CC that is closer to the biological body configuration surface.
  • the filling solid is a sphere.
  • the center of the filling solid is located within the placement surface.
  • the volume of the filling solid becomes smaller as the hardness represented by the hardness information obtained for the distribution configuration position opposite the center of the filling solid and closest to the position included in the biological configuration surface becomes softer.
  • the diameter of the filling solid becomes smaller as the hardness represented by the hardness information obtained for the distribution configuration position opposite the center of the filling solid and closest to the position included in the biological configuration surface becomes softer.
  • Fig. 23 is an explanatory diagram showing a state where a plurality of filling solids FS are closely packed on the arrangement surface.
  • the stiffness of the living body surface BD is represented as being harder as the color becomes darker.
  • the attachment shape information generating unit 108 determines the positions of multiple filling solids FS so that the distance between the centers FSC of the filling solids FS becomes shorter as the hardness of the biological body constituent surface BD becomes softer.
  • the method of determining the positions of a plurality of filling solids by closest packing the plurality of filling solids may be a method called the bubble mesh method.
  • the filling solid may be an ellipsoid, a rectangular solid, etc.
  • the attachment shape information generating unit 108 may use the position of the center of gravity of the filling solid instead of the position of the center of the filling solid.
  • the wear body shape information generating unit 108 determines the positions of the plurality of convex parts based on the determined positions of the plurality of filling solids.
  • the wear body shape information generating unit 108 determines the positions of the centers of the determined plurality of filling solids as the positions of the centers of the plurality of convex parts.
  • the diameter of the top surface of each protrusion and the height of each protrusion are each a preset value.
  • the distance between the protrusions is 1 mm to 10 mm.
  • the diameter of the top surface of each protrusion is 0.1 to 5 mm.
  • the height of each protrusion is 0.3 mm to 2 mm.
  • the wearing body shape information generating unit 108 generates wearing body shape information based on the generated intersection solid information and the determined positions of the multiple convex parts.
  • the wearing body shape information represents a three-dimensional shape in which convex part-constituting solids CP corresponding to each of the multiple convex parts having the determined positions of the multiple convex parts are added to the intersection solid CC on the surface of the intersection solid CC represented by the intersection solid information that is closer to the biological body surface.
  • FIG. 24 is a partially enlarged view of the contact surface of the three-dimensional shape of the attachment.
  • FIG. 24 is a view of the three-dimensional shape of the attachment in the direction opposite to the reference direction RD.
  • the wearer shape information generating unit 108 generates wearer shape information representing the three-dimensional shape of the wearer by adding convex portion-constituting solids corresponding to each of the multiple convex portions to the intersection solid CC.
  • the wearer shape information generating unit 108 may also generate wearer shape information representing the three-dimensional shape of a wearer whose surface has multiple convex portions by removing a portion of the intersection solid CC near the surface of the living body that is closer to the living body configuration surface from the intersection solid CC.
  • the wearable body shape information generating unit 108 may perform a process of rounding at least a part of the portion corresponding to the corner of the intersection solid CC (in other words, fillet processing).
  • the mounting body shape information generating unit 108 may generate mounting body shape information so that the mounting surface has multiple concave portions instead of multiple convex portions. In this case, the mounting body shape information generating unit 108 determines the positions of multiple concave portions instead of the positions of multiple convex portions. In this case, it is preferable that the volume of the filling solid increases as the hardness represented by the hardness information acquired for the distribution configuration position facing the center position of the filling solid and closest to the position included in the biological configuration surface becomes softer.
  • the description of the functions of the wear body design support device 10 of the third embodiment may be supplemented by the following description of the operation of the wear body design support device 10.
  • the wearable body design support device 10 of the third embodiment executes the processing of step S107 in FIG. 16, and then executes the processing of steps S108C, S109C, and S110C in FIG. 25.
  • the wearable body design support device 10 acquires hardness distribution information based on the biological component shape information stored in the storage device 12 and the position information and reference direction information received in step S103 of FIG. 16 (step S108C of FIG. 25).
  • the attachment design support device 10 generates attachment shape information based on the intersection solid information generated in step S107 of FIG. 16 and the hardness distribution information acquired in step S108C (step S110C of FIG. 25). Next, the attachment design support device 10 ends the process of FIG.
  • the wearable body may be manufactured using a technology called 3D printing or three-dimensional modeling.
  • the wearable body shape information generated by the wearable body design support device 10 is input to a 3D printer, and the 3D printer forms the three-dimensional shape represented by the wearable body shape information, thereby manufacturing the wearable body.
  • the attachment body of the third embodiment has a plurality of convex portions on the attachment surface such that the distance between the convex portions becomes shorter as the hardness of the living body surface at the position opposite the attachment surface becomes softer.
  • the plurality of protrusions are configured such that, when the hardness of the bioconstitutive surface in a first region included in the bioconstitutive surface is softer than the hardness of the bioconstitutive surface in a second region included in the bioconstitutive surface, the contact rate with the first region is higher than the contact rate with the second region.
  • the contact rate with a region included in the bioconstitutive surface is the ratio of the area of contact between the region and the region-facing portion of the attachment surface that faces the region to the area of the region-facing portion.
  • the mounting body may have at least one non-relief area.
  • the wear body design support device 10 of the third embodiment the same actions and effects as those of the wear body design support device 10 of the first embodiment are achieved. Furthermore, in the third embodiment of the wearable body design support device 10, the hardness information acquisition unit 107 acquires hardness information for each of a plurality of positions (distribution configuration positions in this example) included in the biological body configuration surface.
  • the wearable body shape information generation unit 108 determines the positions of a plurality of filling solids by closely packing a plurality of filling solids on the surface (arrangement surface in this example) of a basic solid that constitutes a part of the wearable surface and does not have a concave or convex portion, and determines the positions of a plurality of convex portions based on the determined positions of the plurality of filling solids, and generates wearable body shape information based on the determined positions of the plurality of convex portions and the basic solid information representing the basic solid.
  • the volume of the filling solid becomes smaller as the hardness represented by the hardness information acquired for the position opposite to the position of the filling solid and included in the biological body configuration surface becomes softer.
  • the wearable body design support device 10 of the third embodiment acquires hardness distribution information in advance, and close-packs a plurality of filling solids based on the acquired hardness distribution information. Note that, instead of acquiring hardness distribution information in advance, the wearable body design support device 10 may be configured to acquire hardness information for the positions where the filling solids are placed when close-packing a plurality of filling solids.
  • the recesses or protrusions of the mounting bodies 1, 1A, and 1B may have rounded corners or edges (in other words, edges) (in other words, they may have a shape that has been filleted).
  • edges edges
  • the edges of the top surface of each protrusion may be rounded.
  • the corners or edges of the mounting bodies 1, 1A, and 1B corresponding to the intersection solid body CC may be rounded. This makes it possible to prevent the stress in the living body component caused by the attachments 1, 1A, 1B coming into contact with the living body component surface BD from becoming excessive.

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Abstract

Ce dispositif d'aide à la conception de corps pouvant être fixé (10) aide à concevoir un corps pouvant être fixé destiné à être fixé à une surface constitutive de corps vivant qui est une surface d'une partie constituant un corps vivant. Le dispositif d'aide à la conception de corps pouvant être fixé (10) comprend une unité d'acquisition d'informations de dureté (107) et une unité de génération d'informations de forme de corps pouvant être fixé (108). L'unité d'acquisition d'informations de dureté (107) acquiert des informations de dureté qui sont des informations montrant la dureté de la surface constitutive du corps vivant. L'unité de génération d'informations de forme de corps pouvant être fixé (108) génère, sur la base des informations de dureté acquises, des informations de forme de corps pouvant être fixé montrant la forme tridimensionnelle du corps pouvant être fixé de telle sorte qu'une surface de fixation qui est une partie de la surface du corps pouvant être fixé qui doit être fixée à la surface constitutive de corps vivant présente une pluralité d'évidements ou de saillies.
PCT/JP2024/017969 2023-06-11 2024-05-15 Dispositif, procédé et programme d'aide à la conception de corps pouvant être fixé, et corps pouvant être fixé Pending WO2024257540A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0598291A1 (fr) * 1992-11-16 1994-05-25 FERD. HAUBER GmbH & CO. KG Bandage pour articulations
US20130315371A1 (en) * 2012-05-23 2013-11-28 Stryker Trauma Gmbh Bone density measurement
US20190059965A1 (en) * 2016-02-02 2019-02-28 Thomas Gausepohl Implements for Stabilising Bone Fractures
JP7141779B1 (ja) * 2022-05-10 2022-09-26 国立大学法人東北大学 装着体設計支援装置、装着体設計支援方法、及び、装着体設計支援プログラム
CN116211550A (zh) * 2023-04-06 2023-06-06 北京积水潭医院 一种用于股骨严重骨缺损重建的低弹性模量组配股骨柄

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0598291A1 (fr) * 1992-11-16 1994-05-25 FERD. HAUBER GmbH & CO. KG Bandage pour articulations
US20130315371A1 (en) * 2012-05-23 2013-11-28 Stryker Trauma Gmbh Bone density measurement
US20190059965A1 (en) * 2016-02-02 2019-02-28 Thomas Gausepohl Implements for Stabilising Bone Fractures
JP7141779B1 (ja) * 2022-05-10 2022-09-26 国立大学法人東北大学 装着体設計支援装置、装着体設計支援方法、及び、装着体設計支援プログラム
CN116211550A (zh) * 2023-04-06 2023-06-06 北京积水潭医院 一种用于股骨严重骨缺损重建的低弹性模量组配股骨柄

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