WO2020067372A1 - 癒合促進デバイス - Google Patents
癒合促進デバイス Download PDFInfo
- Publication number
- WO2020067372A1 WO2020067372A1 PCT/JP2019/038027 JP2019038027W WO2020067372A1 WO 2020067372 A1 WO2020067372 A1 WO 2020067372A1 JP 2019038027 W JP2019038027 W JP 2019038027W WO 2020067372 A1 WO2020067372 A1 WO 2020067372A1
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- WIPO (PCT)
- Prior art keywords
- main body
- reinforcing portion
- promoting device
- fusion promoting
- hole
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/11—Surgical instruments, devices or methods for performing anastomosis; Buttons for anastomosis
- A61B17/1114—Surgical instruments, devices or methods for performing anastomosis; Buttons for anastomosis of the digestive tract, e.g. bowels or oesophagus
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/11—Surgical instruments, devices or methods for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis, e.g. in a single operation
- A61B17/1155—Circular staplers comprising a plurality of staples
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B17/07292—Reinforcements for staple line, e.g. pledgets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/11—Surgical instruments, devices or methods for performing anastomosis; Buttons for anastomosis
- A61B2017/1132—End-to-end connections
Definitions
- the present invention relates to a fusion promoting device.
- Various methods and medical instruments are used in a procedure for joining a living organ.
- a method of suturing a living organ with a biodegradable suture or a mechanical anastomosis apparatus for performing an anastomosis with a stapler has been proposed.
- the joining force between living organs at the joint can be increased as compared with a method using a suture, thereby reducing the risk of suture failure. It becomes possible.
- the degree of progress of fusion at the joint also depends on the state of the living tissue at the joint target site (joint site) of the patient. Therefore, for example, even when an anastomosis device such as that described in Patent Literature 1 is used, the risk of suture failure may not be sufficiently reduced depending on the state of the living tissue of the patient.
- an object of the present invention is to provide a fusion promoting device that can reduce the risk of suture failure after surgery such as surgery.
- the fusion promoting device includes a main body formed of a biodegradable sheet having a plurality of through holes and promoting fusion of a living tissue, and a main body disposed on a part of the main body. And a reinforcing portion for reinforcing.
- the fusion promoting device can increase the rigidity of the main body by the reinforcing portion, and can suppress the occurrence of the deformation and the displacement.
- the fusion promoting device can suppress the occurrence of the deformation and the displacement.
- FIG. 1A is a perspective view showing an embodiment of the fusion promoting device of the present invention
- FIG. 1B is a perspective view showing a main body of the fusion promoting device shown in FIG. 1A
- 2A is a cross-sectional view taken along line 2-2 of FIG. 1A
- FIG. 2B is a cross-sectional view showing a part of the main body in an enlarged manner.
- FIGS. 3A and 3B are explanatory diagrams used to explain conditions for specifying the shape of the reinforcing portion in the fusion promoting device.
- FIGS. 4A, 4B, and 4C are diagrams showing various forms of the shape of the reinforcing portion in the fusion promoting device.
- FIGS. 5A and 5B are diagrams showing various forms of the shape of the reinforcing portion in the fusion promoting device
- FIGS. 6A and 6B are diagrams showing various forms of the shape of the reinforcing portion in the fusion promoting device
- FIGS. 7A and 7B are views showing the form of a hole formed in the main body of the fusion promoting device. It is a perspective view showing other forms of the fusion promotion device of the present invention.
- FIG. 9 (A) is a perspective view showing still another form of the fusion promoting device of the present invention
- FIG. 9 (B) is a perspective view showing a main body of the fusion promotion device shown in FIG. 9 (A). .
- FIGS. 10A, 10B, and 10C are diagrams showing other forms of the main body in the fusion promoting device.
- FIGS. 11A and 11B are cross-sectional views showing other forms of the cross-sectional structure of the fusion promoting device.
- 12 (A) and 12 (B) are views showing a form of a manufacturing procedure of a reinforcing portion in the fusion promoting device.
- FIGS. 13A, 13B, 13C, and 13D are views showing specific shapes of reinforcing portions in the fusion promoting device.
- 14 (A), (B), (C), and (D) are diagrams showing the specific shape of the reinforcing portion in the fusion promoting device, following FIG.
- FIG. 15 are diagrams showing the specific shape of the reinforcing portion in the fusion promoting device, following FIG. It is a flowchart which shows each procedure of the treatment method using the fusion promoting device. It is a flowchart which shows the procedure of embodiment (colorectal anastomosis) of a treatment method. It is a typical sectional view for explaining a large intestine anastomosis. It is a typical sectional view for explaining a large intestine anastomosis. It is a typical sectional view for explaining a large intestine anastomosis.
- FIG. 1 (A) is a perspective view showing one mode of the fusion promoting device 10
- FIG. 1 (B) is a perspective view showing a main body portion 20 of the fusion promoting device 10 shown in FIG. 1 (A).
- 2A is a cross-sectional view taken along line 2-2 of FIG. 1A
- FIG. 2B is a cross-sectional view showing a part of the main body 20 in an enlarged manner.
- the illustrated fusion promoting device 10 can be used, for example, for a method of joining a predetermined site to be joined to a living organ (for example, an anastomosis of a digestive tract).
- the fusion promoting device 10 is formed from a biodegradable sheet having a plurality of through holes 25 and promotes fusion of living tissue, and is disposed on a part of the main body 20 to reinforce the main body 20. And a reinforcing portion 30. The details will be described below.
- the main body 20 can be formed from a thin biodegradable sheet.
- a plurality of through holes 25 are formed in the main body 20. As shown in FIGS. 1A and 1B, the plurality of through holes 25 are provided regularly and periodically in the plane direction of the main body 20. The plurality of through holes 25 may be provided, for example, randomly in the main body 20.
- the plurality of through holes 25 are provided vertically along the thickness direction of the main body 20 (the vertical direction in FIG. 2 (B)).
- the plurality of through holes 25 are provided substantially vertically between the front surface 21 and the back surface 23 of the main body 20.
- the plurality of through holes 25 may be provided so as to be curved between the front surface 21 and the back surface 23 in the thickness direction of the main body 20.
- the thickness of the main body 20 (the size T shown in FIG. 2B) is not particularly limited, but is preferably 0.05 to 0.3 mm, and more preferably 0.1 to 0.2 mm. If the thickness of the main body 20 is 0.05 mm or more (particularly 0.1 mm or more), it is possible to ensure sufficient strength that the main body 20 is not damaged when the fusion promoting device 10 is handled. On the other hand, if the thickness of the main body 20 is 0.3 mm or less (especially 0.2 mm or less), the main body 20 adheres closely to the living tissue to which the main body 20 is applied, and follows the living tissue. Enough flexibility can be ensured.
- the main body 20 has a circular shape in plan view.
- the outer shape of the main body 20 is not particularly limited, and may be, for example, a substantially rectangular shape or an elliptical shape.
- the main body part 20 has a value of the ratio of the hole diameter D (the distance D shown in FIG. 2B) of the plurality of through holes 25 to the pitch P of the plurality of through holes 25 (the distance P shown in FIG. 2B). It is preferably 0.25 or more and less than 40. If the shape of the through hole 25 in a plan view is a perfect circle, the hole diameter D of the through hole 25 is equal to the diameter of the perfect circle. On the other hand, when the shape of the through-hole 25 in a plan view is not a perfect circle, a true shape having the same area as the area of the opening of the through-hole 25 (the portion of the through-hole 25 facing the front surface 21 or the back surface 23) is provided. The diameter of the circle (equivalent circle diameter) can be used as the hole diameter D of the through hole 25.
- the body 20 has a plurality of through holes 25. Therefore, the main body 20 has a plurality of values of the hole diameter D corresponding to each through hole 25.
- the arithmetic mean value of two or more values of the hole diameter D corresponding to each of the plurality of through holes 25 is used as a representative value of the hole diameter D.
- the “pitch P” of the plurality of through holes 25 refers to the shortest distance between the openings of the two through holes 25.
- the pitch P there are a plurality of values of the pitch P corresponding to the combination of the adjacent through holes 25. Therefore, in the present embodiment, when calculating the value of the ratio described above, the arithmetic mean of two or more values of the pitch P corresponding to the combination of the adjacent through holes 25 is used as the representative value of the pitch P.
- the pitch P, the hole diameter D, the ratio of the hole diameter D to the pitch P, and the like of the through holes 25 are merely examples, and are not limited thereto.
- the main body 20 can be made of a biodegradable material.
- the constituent material of the main body 20 is not particularly limited, and examples thereof include a biodegradable resin.
- biodegradable resins include, for example, those described in JP-T-2011-528275, JP-T-2008-514719, International Publication No. 2008-1952, JP-T-2004-509205 and the like.
- Biodegradable (co) polymers can be used. Specifically, it is selected from the group consisting of (1) aliphatic polyester, polyester, polyanhydride, polyorthoester, polycarbonate, polyphosphazene, polyphosphate, polyvinyl alcohol, polypeptide, polysaccharide, protein, and cellulose.
- Polymers (2) Copolymers composed of one or more monomers constituting the above (1). That is, the biodegradable sheet is selected from the group consisting of aliphatic polyester, polyester, polyanhydride, polyorthoester, polycarbonate, polyphosphazene, polyphosphate, polyvinyl alcohol, polypeptide, polysaccharide, protein, and cellulose. It is preferable to include at least one biodegradable resin selected from the group consisting of a polymer and a copolymer composed of one or more monomers constituting the polymer.
- the method for manufacturing the main body 20 is not particularly limited. For example, there is a method in which fibers made of the above-described biodegradable resin are produced, and a mesh-shaped sheet is manufactured using the fibers.
- the method for producing a fiber made of a biodegradable resin is not particularly limited, and examples thereof include an electrospinning method (electrospinning method / electrospinning method) and a melt blow method. As the main body 20, only one of the above methods may be selected and used, or two or more may be selected and appropriately combined.
- the electrospinning method is a method for forming microfibers made of resin while a high voltage (for example, about 20 kV) is applied between a syringe filled with a resin solution and a collector electrode.
- a high voltage for example, about 20 kV
- the solution extruded from the syringe is charged and scatters in the electric field, but as time passes, the solvent contained in the scattered solution evaporates, and as a result, a thinned solute appears. .
- the thinned solute becomes fine fibers made of resin and adheres to a collector such as a substrate.
- a mesh-like substrate made of stainless steel (SUS) steel or the like As a collector of the electrospinning method, fine fibers made of a biodegradable resin as a thinned solute adhere to a substantial part of the mesh, and Mesh is formed.
- the biodegradable sheet can be manufactured by peeling the resin mesh thus obtained from the mesh base material.
- the size (pore diameter, pitch) of the mesh base material it is possible to control the shape (pore diameter, pitch of through holes) of the biodegradable sheet made of the resin mesh to be produced.
- a resin sheet having a uniform thickness by scattering the above solution on a flat base material surface that is not a mesh shape and attaching the microfibers thereto may also be adopted.
- a method of forming a through-hole after obtaining the same may also be adopted.
- by irradiating the resin sheet with laser light condensed using a condensing lens it is possible to form a through-hole at the irradiated portion.
- the shape (pore diameter, pitch) of the biodegradable sheet made of the resin mesh to be produced can be controlled by adjusting the energy of the laser light to be irradiated, the irradiation time, the interval between the irradiation sites, and the like. It is possible.
- a fiber made of the above-described biodegradable resin is spun according to an ordinary method, and the obtained fiber is knitted into a mesh to produce a biodegradable sheet. Is also good.
- the main body 20 causes a biological reaction by a constituent material such as a biodegradable resin constituting the main body 20.
- the main body 20 induces the expression of a biological component such as fibrin by this action.
- the biocomponents thus induced are accumulated by penetrating through the through-hole 25 of the main body 20 to promote fusion.
- fusion is promoted by the above mechanism.
- the main body 20 has a hole 40 (center hole) having a hole diameter d1 larger than the through hole 25 at a substantially central position in plan view.
- the hole diameter of the hole 40 can be, for example, 5 mm to 25 mm.
- the outer shape of the hole 40 can be formed, for example, in a perfect circle, but may be elliptical, rectangular, or any other shape.
- the reinforcing portion 30 is disposed in a part of the main body 20.
- the reason for this is that when the reinforcing portion 30 is provided on the entire surface of the main body portion 20, the function of promoting fusion, which is the original function of the main body portion 20, cannot be exhibited.
- the reinforcing portion 30 is arranged on one of the front and back surfaces (the front surface 21) of the main body 20. Since the main body 20 is formed from a mesh sheet, the main body 20 is very soft. When only the main body 20 is used, the fusion promoting device is likely to be distorted or misaligned.
- the fusion promoting device may be distorted or misaligned. Further, even after the indwelling, the fusion promoting device may be distorted or misaligned for some reason.
- the fusion promoting device 10 of the present embodiment by arranging the reinforcing portion 30 in a part of the main body portion 20, the rigidity of the main body portion 20 is increased, so that the fusion promoting device 10 may be twisted or misaligned. Can be suppressed. Thereby, at the time of operation (at the time of indwelling in the body), it is possible to prevent the fusion promoting device 10 from being twisted or misaligned. In addition, when any force acts after the placement, it is possible to prevent the fusion promoting device 10 from being twisted or misaligned.
- the reinforcing portion 30 includes a first reinforcing portion 31 located on the outer edge side of the main body portion 20 and a second reinforcing portion 32 located on the inner peripheral edge side of the hole 40.
- the rigidity on the outer edge side of the main body 20 is enhanced by the first reinforcing portion 31, and the rigidity on the inner peripheral edge side of the hole 40 is enhanced by the second reinforcing portion 32.
- the reinforcing portion 30 is not limited to the case where the first and second reinforcing portions 31 and 32 are provided.
- One reinforcing portion 30 can be located only on the outer edge side of the main body portion 20 or can be located only on the inner peripheral edge side of the hole portion 40. Further, the reinforcing portion 30 can be constituted by three or more reinforcing portions 30.
- the second reinforcing portion 32 can have a greater strength for reinforcing the biodegradable sheet forming the main body portion 20 than the first reinforcing portion 31.
- the first reinforcing portion 31 and the second reinforcing portion 32 can have the same strength for reinforcing the main body 20.
- the material of the reinforcing portion 30 is not particularly limited, but for example, a biocompatible adhesive or a coating agent made of a thermoplastic resin can be used. Further, the same material as that of the main body 20 can be used.
- the thickness of the reinforcing portion 30 is not particularly limited.
- the reinforcing portion 30 is provided for the purpose of reinforcing the main body portion 20, and it is not necessary that the reinforcing portion 30 has flexibility or elasticity. Therefore, the reinforcing portion 30 does not need to be unnecessarily thick, and the intended purpose can be achieved with a thickness of, for example, less than 1 mm.
- the method of forming the reinforcing portion 30 is not particularly limited, and a forming method suitable for the constituent material of the reinforcing portion 30 can be adopted.
- the reinforcing portion 30 can be formed by applying a part of the main body portion 20 from a nozzle and drying it.
- a layer (reinforcement portion layer) including the reinforcement portion 30 is formed separately from the main body portion 20, and the reinforcement portion layer is integrated with the main body portion 20 by pressure bonding or heat fusion to form the reinforcement portion 30. Can be created.
- the main body 20 and the reinforcing part 30 have a square shape.
- the sides constituting the quadrangular reinforcing portion 30 are denoted by 33a to 33d.
- a line segment 52 extending from the center 51 of the virtual circle 50 and a side 33a of the reinforcing portion 30 intersect at a point Pc.
- the rigidity of the main body 20 is increased by the sides 33 a of the reinforcing part 30.
- the side 33a of the reinforcing portion 30 is not easily bent. Therefore, in the fusion promoting device 10, the occurrence of the deformation and the displacement is suppressed against the force F.
- the reinforcing portion 30 in the fusion promoting device 10A of FIG. 4A includes a first reinforcing portion 31 located on the outer edge side of the main body portion 20 and a second reinforcing portion 32 located on the inner peripheral edge side of the hole portion 40.
- Each of the first reinforcing portion 31 and the second reinforcing portion 32 has a closed ring shape.
- the reinforcing portion 30 in the fusion promoting device 10B of FIG. 4B is located only on the inner peripheral side of the hole portion 40 and has a closed ring shape.
- the reinforcing portion 30 in the fusion promoting device 10C in FIG. 4C is located only on the outer edge side of the main body portion 20 and has a closed ring shape.
- the reinforcing portion 30 in the fusion promoting device 10D of FIG. 5A includes a first reinforcing portion 31 located on the outer edge side of the main body portion 20 and a second reinforcing portion 32 located on the inner peripheral edge side of the hole 40.
- the first reinforcing portion 31 extends in a circular shape with a gap therebetween, and has an open ring shape.
- the second reinforcing portion 32 has a closed ring shape.
- the reinforcing portion 30 in the fusion promoting device 10E of FIG. 5B includes two reinforcing portions 35a and 35b located closer to the outer edge of the main body 20.
- the two reinforcing portions 35a and 35b are located on concentric circles and have an open ring shape.
- the gap in the radially outer reinforcing portion 35a is covered by the radially inner reinforcing portion 35b.
- the gap in the radially inner reinforcing portion 35b is covered by the radially outer reinforcing portion 35a.
- the reinforcing portion 30 in the fusion promoting device 10F of FIG. 6 (A) has a closed rectangular shape.
- the reinforcing portion 30 in the fusion promoting device 10G of FIG. 6B has a radial shape extending in the radial direction from the center 51 of the virtual circle 50.
- the reinforcing portion 30 shown in FIG. 4A intersects the line segment 52 extending from the center 51 of the virtual circle 50 inscribing or circumscribing the main body portion 20 at two places.
- the reinforcing portion 30 shown in FIGS. 4B and 4C intersects the line segment 52 at one point.
- the reinforcing portion 30 shown in FIGS. 5A and 5B intersects the line segment 52 at two points in one direction of the line segment 52 and one point with respect to the line segment 52 in the other direction. Intersect at The reinforcing portion 30 shown in FIG. 6A intersects the line segment 52 at one position.
- each of these reinforcing portions 30 intersects at least one point with a line segment 52 extending from the center 51 of the virtual circle 50. Since the main body 20 is circular, the virtual circle 50 matches the outer periphery of the main body 20.
- the reinforcing portions shown in FIGS. 4A, 5B, 5C, 5A, 5B, and 6A intersects the line segment 52 over the entire circumference of the virtual circle 50 in the circumferential direction. That is, when the line segment 52 makes one rotation (360 degrees) about the center 51 of the virtual circle 50, the reinforcing portion 30 intersects the line segment 52 in any direction. In other words, these reinforcing portions 30 have a shape that forms a closed region including the center 51 of the virtual circle 50.
- the reinforcing portion 30 intersects the line segment 52 over the entire circumference in the circumferential direction of the imaginary circle 50, the reinforcing portion 30 is not easily bent even when a force F along any direction acts. Accordingly, the fusion promoting device 10 can suppress the occurrence of the displacement and the displacement against the force F along any direction.
- the reinforcing portions 30 shown in FIGS. 5A and 5B include a portion having an open ring shape, and these reinforcing portions 30 overlap in the direction in which the line segment 52 extends. It has a shape. Even if such a portion having an open ring shape is included, the reinforcing portion 30 that intersects the line segment 52 over the entire circumference in the circumferential direction of the virtual circle 50 can be formed.
- the hole 40 shown in FIG. 7A is a center hole formed concentrically with the center 51 of the imaginary circle 50 with which the main body 20 is inscribed or circumscribed.
- the hole 40 shown in FIG. 7B is formed at a position eccentric from the center 51 of the virtual circle 50.
- the hole 40 can be formed at a desired position in the main body 20.
- FIGS. 8 and 9A and 9B another embodiment of the fusion promoting device will be described.
- the fusion promoting devices 10K and 10L may not have the hole 40 formed in the main body 20.
- the main body 20 is not limited to a circular shape in plan view. As shown in FIGS. 9A and 9B, the outer shape of the main body 20A can have a substantially rectangular shape.
- the reinforcing portion 30 in the fusion promoting device 10K shown in FIG. 8 is located only on the outer edge side of the main body portion 20 and has a closed ring shape.
- the reinforcing portion 30 in the fusion promoting device 10L shown in FIG. 9A is located only on the outer edge side of the main body portion 20A and has a closed substantially rectangular shape.
- the outer shape of the main body 20, 20A is not limited to the above-described circular shape or substantially rectangular shape.
- the outer edge of the body can have various shapes, including a straight shape or an arc shape.
- the outer edge of the main body 20B can have a polygonal shape including a linear shape (a hexagonal shape in the illustrated example).
- the outer edge of the main body 20C can have an elliptical shape including an arc shape.
- the outer edge of the main body 20D can have a track-like shape including both a linear shape and an arc shape.
- FIGS. 11A and 11B another embodiment of the cross-sectional structure of the fusion promoting device will be described.
- the cross-sectional structure of the fusion promoting device is not limited to a structure (see FIG. 2A) in which a layer including the reinforcing portion 30 (a reinforcing portion layer) is integrated on one surface of the main body portion 20.
- the fusion promoting device 10M can have a cross-sectional structure in which the reinforcing portion layer 35c is integrated with the front and back surfaces 21 and 23 of the main body portion 20.
- the fusion promoting device 10N can have a cross-sectional structure in which the main body 20 is integrated on both surfaces of the reinforcing layer 35c.
- the reinforcing portion layer 35c and the main body portion 20 can be integrated by pressure bonding or heat fusion.
- the reinforcing portion 30 in the fusion promoting device 10 is not limited to the case where the reinforcing portion 30 is manufactured by integrating the layer including the reinforcing portion (the reinforcing portion layer) and the main body portion 20.
- a biodegradable sheet material 60 before forming the through holes 25 is prepared. Then, the through-hole 25 is formed in the biodegradable sheet material 60 except for a region constituting the reinforcing portion 35d to form the main body 20.
- the main body 20 has a plurality of through-holes 25, whereas the reinforcing portion 35d has no through-hole 25 formed therein. Therefore, the reinforcing portion 35d of the fusion promoting device 10P has higher rigidity than the main body 20, and can reinforce the main body 20.
- a biodegradable sheet 61 having a plurality of through holes 25 is prepared. Then, only the region constituting the reinforcing portion 35e is compressed or heated in the thickness direction, and the through-hole 25 is crushed. The through hole 25 in the reinforcing portion 35e does not need to be completely eliminated. It is sufficient that the through holes 25 are crushed and reduced, and the constituent materials of the biodegradable sheet are densely assembled.
- the main body 20 has a plurality of through holes 25, while the reinforcing portions 35e have the through holes 25 crushed and reduced. Accordingly, since the reinforcing portion 35e of the fusion promoting device 10Q has a higher density, the rigidity is higher than that of the main body 20, and the main body 20 can be reinforced.
- the reinforcing portion may have any shape including a linear shape or an arc shape as long as the reinforcing portion is provided in a part of the main body and functions to reinforce the main body.
- the main body 102 has a circular shape in plan view, and a hole 104 (center hole) is formed at a substantially central position when the main body 102 is viewed in plan. Have been.
- the reinforcing portion 103 in FIG. 13A is located only on the outer edge side of the main body portion 102, and has a closed outer ring portion 103a.
- the reinforcing portion 103 is configured by a portion having an arc shape.
- the reinforcing portion 103 in FIG. 13B has an outer ring portion 103a having an arc shape and a rib portion 103b extending in a radial direction.
- the rib portion 103b extends from the inner periphery of the outer ring portion 103a toward the hole portion 104, but does not reach the hole portion 104.
- the reinforcing portion 103 is configured by a portion having an arc shape and a linear shape.
- the rib portion 103c reaches the inner peripheral edge of the hole portion 104 as compared with FIG. 13B.
- FIG. 13 (D) is located on the inner peripheral side of the hole 104, and has a closed inner ring portion 103d.
- the rib 103c connects the outer ring 103a and the inner ring 103d.
- the outer ring portion 103a corresponds to the first reinforcing portion 31, and the inner ring portion 103d corresponds to the second reinforcing portion 32.
- the reinforcing portion 103 of FIG. 14A is located between the outer ring portion 103a and the inner ring portion 103d and has a closed intermediate ring portion 103e as compared with FIG. 13D. ing.
- the rib 103c connects the outer ring 103a, the intermediate ring 103e, and the inner ring 103d.
- the reinforcing portion 103 in FIG. 14 (B) is composed of a portion having a linear shape and is formed in a shape like a spider web.
- the reinforcing portion 103 has a rib portion 103f extending in the radial direction, and a connection rib portion 103g for connecting adjacent rib portions 103f.
- the rib 103f extends from the outer edge of the main body 102 to the inner periphery of the hole 104.
- the connection rib 103g has an octagonal shape.
- the reinforcing portion 103 in FIG. 14 (C) is composed of a portion having a linear shape.
- the reinforcing portion 103 has a vertical rib portion 103h extending in the vertical direction in the drawing and a horizontal rib portion 103i extending in the horizontal direction.
- the vertical rib portion 103h and the horizontal rib portion 103i are orthogonal to each other in at least one place.
- the width of the vertical rib 103h and the width of the horizontal rib 103i are substantially uniform.
- the vertical rib portions 103j and 103k and the horizontal rib portion 103m have different widths as compared with FIG. 14C.
- the width of the vertical rib 103j and the width of the horizontal rib 103m located on the inner peripheral side of the hole 104 are larger than the width of the vertical rib 103k located on the outer side of the main body 102.
- the reinforcing portion 103 has a configuration including a first reinforcing portion 31 located on the outer edge side of the main body portion 102 and a second reinforcing portion 32 located on the inner peripheral edge side of the hole portion 104.
- the strength of the second reinforcing portion 32 for reinforcing the biodegradable sheet forming the main body portion 102 is greater than that of the first reinforcing portion 31 depending on the width dimension.
- the reinforcing portion 103 in FIG. 15A is configured by a portion having a linear shape.
- the reinforcing portion 103 is formed by connecting a plurality of straight rib portions 103n so as to form a triangular shape, a square shape, and a hexagonal shape.
- the reinforcing portion 103 in FIG. 15B is formed by connecting a plurality of linear rib portions 103p so as to form a honeycomb structure.
- the reinforcing portion 103 in FIG. 15C is composed of a portion having a linear shape.
- the reinforcing portion 103 has a rib portion 103q extending in the radial direction.
- the rib 103q extends from the outer edge of the main body 102 toward the hole 104, but does not reach the hole 104.
- the rib portion 103r reaches the inner peripheral edge of the hole portion 104 as compared with FIG. 15C.
- Each of the fusion promoting devices 100 shown in FIGS. 13 to 15 can increase the rigidity of the main body 102 by the reinforcing portion 103, and can prevent the fusion promoting device 100 from being twisted or misaligned.
- the fusion promoting device 10 includes a main body 20 formed of a biodegradable sheet having a plurality of through holes 25 to promote fusion of living tissue, and a main body 20 disposed on a part of the main body 20. And a reinforcing portion 30 for reinforcing the.
- the rigidity of the main body portion 20 is increased by the reinforcing portion 30, and it is possible to suppress the occurrence of twisting and displacement in the fusion promoting device 10.
- the fusion promoting device 10 configured as described above, the rigidity of the main body portion 20 is increased by the reinforcing portion 30, and it is possible to suppress the occurrence of twisting and displacement in the fusion promoting device 10.
- the reinforcing portion 30 intersects at least one line segment 52 extending from the center 51 of the virtual circle 50 inscribing or circumscribing the main body portion 20.
- the reinforcing portion 30 crosses the line segment 52 over the entire circumference of the virtual circle 50 in the circumferential direction. With such a configuration, the reinforcing portion 30 is hardly bent even when the force F along any direction acts. Accordingly, the fusion promoting device 10 can suppress the occurrence of the displacement and the displacement against the force F along any direction.
- the reinforcing portion 30 has a shape that overlaps in the direction in which the line segment 52 extends. With this configuration, even when the reinforcing portion 30 has an open shape, the reinforcing portion 30 that intersects the line segment 52 over the entire circumference in the circumferential direction of the virtual circle 50 is formed. can do. Accordingly, the fusion promoting device 10 can suppress the occurrence of the displacement and the displacement against the force F along any direction.
- the main body 20 further has a hole 40 formed with a larger hole diameter than the through hole 25.
- the reinforcing portion 30 includes a first reinforcing portion 31 located on the outer edge side of the main body portion 20 and a second reinforcing portion 32 located on the inner peripheral edge side of the hole 40.
- first reinforcing portion 31 located on the outer edge side of the main body portion 20
- second reinforcing portion 32 located on the inner peripheral edge side of the hole 40.
- the strength of the second reinforcing portion 32 for reinforcing the biodegradable sheet forming the main body 20 is greater than that of the first reinforcing portion 31.
- the outer edge of the main body 20 includes a linear shape or an arc shape. With this configuration, it is possible to provide the fusion promoting device 10 having a shape suitable for the treatment using the fusion promoting device 10.
- the reinforcing portion 30 includes a straight shape or an arc shape. With this configuration, the shape of the reinforcing portion 30 suitable for the shape of the main body portion 20 can be selected, and the occurrence of twisting or displacement in the fusion promoting device 10 can be further suppressed.
- the fusion promotion device 10 includes a sheet-shaped main body 20 having a function of promoting fusion of living tissue as a part of the main body 20.
- the specific configuration is not limited as long as the reinforcement is provided by the disposed reinforcing portion 30.
- the fusion promoting device 10 may have a communication hole exposed on the side surface of the main body 20.
- the fusion promoting device 10 has a shape in which a part of the through hole 25 formed in the main body 20 is widened in a direction intersecting the thickness direction of the main body 20 (the vertical direction in FIG. 2B). Is also good.
- the fusion promoting device 10 has a shape in which a part of the through-hole 25 formed in the main body 20 is narrowed in a direction intersecting the thickness direction of the main body 20 (the vertical direction in FIG. 2B). Is also good.
- FIG. 16 is a flowchart showing each procedure of a treatment method using the fusion promoting device.
- a fusion promoting device including a sheet-shaped main body that promotes fusion of a living tissue is arranged between one of the joints to be joined to the living organ and the other joint to be joined (S11). Joining one joined portion and the other joined portion in a state where at least a part of the main body of the fusion promoting device is arranged between the one joined portion and the other joined portion (S12). ,including.
- the living organ to be joined by the treatment method and the site to be joined in the living organ are not particularly limited, and can be arbitrarily selected. However, in the following description, a description will be given using the colon anastomosis as an example.
- the fusion promoting device used in each of the procedures described below for example, any one of the above-described fusion promoting devices can be selected, and other fusion promoting devices can be selected. Can also. However, in the following description, a usage example of a specific fusion promoting device will be described as a typical example that can be suitably used for each procedure. In addition, in each of the procedures described below, detailed descriptions of known procedures, known medical devices, medical instruments, and the like are appropriately omitted.
- fusion promoting device between the living organs means that the fusion promoting device is placed in direct or indirect contact with the living organ, The fusion promoting device is placed with a spatial gap formed between them, or the fusion promoting device is placed in both states (for example, when the fusion promoting device contacts And that the fusion promoting device is not in contact with the other living organ).
- peripheral does not define a strict range (region), but a predetermined range (region) as long as the purpose of treatment (joining of living organs) can be achieved.
- FIG. 17 is a flowchart showing the procedure of an embodiment (a large intestine anastomosis) of the treatment method
- FIGS. 18 to 20 are views for explaining the large intestine anastomosis.
- the living organ to be joined is the large intestine that has been cut along with the resection of the cancer tumor.
- the living organs to be joined are the mouth A1 of the severed large intestine and the anal side A2 of the severed large intestine.
- the procedure for joining the periphery of the mouth of the cut large intestine A1 (one to-be-joined site) and the part of the intestinal wall of the cut colon large intestine A2 (the other to-be-joined site) will be described. explain.
- the fusion promoting device 10 is arranged between the periphery of the mouth of the large intestine and the intestinal wall of the large intestine (S101). Relatively approaching the wall (S102), sandwiching the main body 20 of the fusion promoting device 10 between the periphery of the large intestine and the intestinal wall of the large intestine (S103), the periphery of the large intestine and the large intestine Bonding with the body 20 of the fusion promoting device being sandwiched between the wall and the wall (S104), placing the body of the fusion promoting device between the periphery of the mouth of the large intestine and the intestinal wall of the large intestine (S105) ),including.
- an operator such as a doctor (hereinafter, referred to as an operator) inserts the first engagement device 710 of the anastomosis device 700 into the mouth A1 of the large intestine.
- the surgeon places the second engagement device 720 of the anastomosis device 700 on the anal side A2 of the large intestine.
- the surgeon forms a through hole A21 for inserting the second engagement instrument 720 of the anastomosis device 700 in the anal side A2 of the large intestine. Keep it.
- the timing of forming the through hole A21 is not particularly limited as long as it is before the second engagement device 720 is arranged.
- the anastomosis device 700 for example, a known device used for colorectal anastomosis can be used.
- the anastomosis device 700 is configured such that the first engagement device 710 and the second engagement device 720 are engaged with each other, and the living tissue disposed between the first engagement device 710 and the second engagement device 720 is removed.
- the periphery of the excised living tissue is sutured circumferentially with staples.
- the first engaging device 710 is, for example, a device having a cylindrical engaged portion 711, and the second engaging device 720 is inserted into and engaged with the engaged portion 711 of the first engaging device 710, for example. It is a device including an engaging pin 721 to be combined.
- the surgeon places the fusion promoting device 10 between the oral side A1 of the large intestine and the anal side A2 of the large intestine.
- a fusion promoting device 10 (see FIG. 1A) in which a hole (center hole) 40 is formed in the main body 20 is used.
- the surgeon passes the hole 40 formed in the main body 20 through the engagement pin 721 provided in the second engagement device 720.
- the surgeon brings the main body 20 of the fusion promoting device 10 into contact with the vicinity of the anal side A2 of the large intestine where the through-hole A21 is formed.
- the surgeon may place the fusion promoting device 10 on the mouth A1 of the large intestine by passing the hole 40 formed in the main body 20 through the engaged portion 711 provided in the first engagement instrument 710. Good.
- the surgeon makes the first engagement device 710 and the second engagement device 720 relatively close to each other to engage.
- the surgeon places the first engagement device 710 and the second engagement device 720 around the mouth on the oral side A1 of the large intestine, the main body 20 of the fusion promoting device 10, and the intestinal wall on the anal side A2 of the large intestine.
- the periphery of the formed through hole A21 is sandwiched.
- the surgeon operates the anastomosis device 700 to cause a part of the mouth A1 of the large intestine to be sandwiched between the first engagement device 710 and the second engagement device 720.
- a part of the anal side A2 of the large intestine are excised, and the periphery of the excised site is joined by staples (not shown).
- the surgeon removes the anastomosis device 700 from the anal side A2 of the large intestine to the outside of the body via the anus, for example.
- the surgeon places the fusion promoting device 10 in a state where a part of the main body 20 of the fusion promoting device 10 is sandwiched between the periphery of the mouth on the oral side A1 of the large intestine and the intestinal wall on the anal side A2 of the large intestine. Detain.
- the vicinity of the mouth of the large intestine and the intestinal wall of the large intestine are joined.
- the body part 20 of the fusion promoting device 10 disposed between the periphery of the mouth A1 of the large intestine and the intestinal wall of the anal side A2 of the large intestine is combined with the biological tissue around the mouth A1 of the large intestine.
- Healing of the living tissue of the intestinal wall on the anal side A2 of the large intestine can be promoted, and the risk of suture failure after colorectal anastomosis can be reduced.
- a joining technique for example, gastrointestinal tract
- a simple method in which a sheet-shaped main body provided in the fusion promoting device is sandwiched between one to-be-joined part and the other to-be-joined part. The risk of suture failure after anastomosis is reduced.
- the fusion promoting device 10 since the rigidity of the main body portion 20 is increased by the reinforcing portion 30, the fusion promoting device 10 may be distorted or misaligned at the time of operation by the operator (during in-vivo placement). Can be suppressed. In addition, when any force acts after the placement, it is possible to prevent the fusion promoting device 10 from being twisted or misaligned. Therefore, the risk of suture failure after surgery such as surgery can be reduced.
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Abstract
Description
本体部20は、薄膜状の生分解性シートから形成することができる。本体部20には、複数の貫通孔25が形成されている。複数の貫通孔25は、図1(A)(B)に示すように、本体部20の面方向において規則的かつ周期的に設けられている。複数の貫通孔25は、例えば、本体部20にランダムに設けられていてもよい。
図1(A)および図2(A)に示すように、補強部30は、本体部20の一部に配置されている。一部としたのは、本体部20の全面に補強部30を設けた場合には、本体部20の本来の機能である癒合の促進機能を発揮できないからである。補強部30は、本体部20の表裏両面のうちの一方の面(表面21)に配置されている。本体部20はメッシュシートから形成されるため、本体部20は大変柔らかい。本体部20のみの場合には、癒合促進デバイスにヨレやズレが発生し易い。このため、操作時(体内留置時)に、癒合促進デバイスにヨレやズレが発生する虞がある。また、留置後にあっても、何らかの原因によって癒合促進デバイスにヨレやズレが発生する虞がある。
図17は、処置方法の実施形態(大腸吻合術)の手順を示すフローチャートであり、図18~図20は、大腸吻合術の説明に供する図である。
20 本体部、
21 表面、
23 裏面、
25 貫通孔、
30 補強部、
31 第1補強部、
32 第2補強部、
35c 補強部層、
40 孔部、
50 仮想円、
51 中心、
52 仮想円の中心から伸びている線分。
Claims (9)
- 複数の貫通孔を有する生分解性シートから形成され生体組織の癒合を促進する本体部と、
前記本体部の一部に配置され前記本体部を補強する補強部と、を有する癒合促進デバイス。 - 前記補強部は、前記本体部に内接または外接する仮想円の中心から伸びている線分に対して少なくとも1ヶ所において交差している、請求項1に記載の癒合促進デバイス。
- 前記補強部は、前記仮想円の周方向の全周に亘って前記線分に対して交差している、請求項2に記載の癒合促進デバイス。
- 前記補強部は、前記線分が伸びている方向にオーバーラップする形状を有している、請求項3に記載の癒合促進デバイス。
- 前記本体部は、前記貫通孔よりも孔径が大きく形成された孔部をさらに有する、請求項1~4のいずれか1項に記載の癒合促進デバイス。
- 前記補強部は、前記本体部の外縁側に位置する第1補強部と、前記孔部の内周縁側に位置する第2補強部とを含む、請求項5に記載の癒合促進デバイス。
- 前記第2補強部は、前記本体部を形成する前記生分解性シートを補強する強さが前記第1補強部よりも大きい、請求項6に記載の癒合促進デバイス。
- 前記本体部の外縁は、直線形状、または円弧形状を含む、請求項1~7のいずれか1項に記載の癒合促進デバイス。
- 前記補強部は、直線形状、または円弧形状を含む、請求項1~8のいずれか1項に記載の癒合促進デバイス。
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| CN201980055867.8A CN112638288B (zh) | 2018-09-27 | 2019-09-26 | 愈合促进设备 |
| EP19867273.5A EP3845149B1 (en) | 2018-09-27 | 2019-09-26 | Adhesion promotion device |
| JP2020549404A JP7376495B2 (ja) | 2018-09-27 | 2019-09-26 | 癒合促進デバイスおよび癒合促進デバイスの製造方法 |
| US17/212,702 US20210212692A1 (en) | 2018-09-27 | 2021-03-25 | Adhesion promotion device |
| US19/264,929 US20250331859A1 (en) | 2018-09-27 | 2025-07-10 | Adhesion promotion device |
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| US17/212,702 Continuation US20210212692A1 (en) | 2018-09-27 | 2021-03-25 | Adhesion promotion device |
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| WO2020067372A1 true WO2020067372A1 (ja) | 2020-04-02 |
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| EP (1) | EP3845149B1 (ja) |
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| JPWO2023032694A1 (ja) * | 2021-09-03 | 2023-03-09 | ||
| WO2023189202A1 (ja) * | 2022-03-31 | 2023-10-05 | テルモ株式会社 | 医療用部材 |
| WO2026071029A1 (ja) * | 2024-09-30 | 2026-04-02 | テルモ株式会社 | 組織補強デバイス |
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| CN115697211A (zh) * | 2020-04-24 | 2023-02-03 | 爱德华兹生命科学公司 | 手术垫和间隔件 |
| US11559293B1 (en) * | 2021-05-06 | 2023-01-24 | Charles H Vanderpool | Apparatus for facilitating access to abdominal cavity of a patient and removing larger cancerous tumors |
| CN116549043A (zh) * | 2023-05-18 | 2023-08-08 | 大瓷生物医疗科技(江苏)有限公司 | 预装式保护膜及预装保护膜的管型吻合器 |
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Also Published As
| Publication number | Publication date |
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| US20250331859A1 (en) | 2025-10-30 |
| EP3845149A4 (en) | 2021-10-27 |
| JP7376495B2 (ja) | 2023-11-08 |
| JPWO2020067372A1 (ja) | 2021-09-24 |
| CN112638288B (zh) | 2024-03-08 |
| EP3845149B1 (en) | 2025-06-11 |
| EP3845149A1 (en) | 2021-07-07 |
| US20210212692A1 (en) | 2021-07-15 |
| CN112638288A (zh) | 2021-04-09 |
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