WO2022257541A1 - Appareil de serrage de tissu insérable - Google Patents

Appareil de serrage de tissu insérable Download PDF

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Publication number
WO2022257541A1
WO2022257541A1 PCT/CN2022/082114 CN2022082114W WO2022257541A1 WO 2022257541 A1 WO2022257541 A1 WO 2022257541A1 CN 2022082114 W CN2022082114 W CN 2022082114W WO 2022257541 A1 WO2022257541 A1 WO 2022257541A1
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WO
WIPO (PCT)
Prior art keywords
clamping
clamping structure
moving rod
separation base
stroke
Prior art date
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
Application number
PCT/CN2022/082114
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English (en)
Chinese (zh)
Inventor
黄俊俊
单剑
吴海良
陈卿业
孙忠利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Xinwell Medical Technology Co Ltd
Original Assignee
Ningbo Xinwell Medical Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ningbo Xinwell Medical Technology Co Ltd filed Critical Ningbo Xinwell Medical Technology Co Ltd
Priority to PCT/CN2022/082114 priority Critical patent/WO2022257541A1/fr
Priority to CN202280005414.6A priority patent/CN115867213A/zh
Publication of WO2022257541A1 publication Critical patent/WO2022257541A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
    • A61B17/128—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord for applying or removing clamps or clips

Definitions

  • the present application relates to the field of medical devices, in particular to a structure of an insertable tissue clipping device used for surgery.
  • the plug-in tissue clipping device is a plug-in medical device, which is used to clip the tissue in the human body or animal body to stop bleeding or close it, and it includes hemostatic clips, tissue clips, etc.
  • the tissue clamping device is usually inserted through the instrument channel of the endoscope to achieve the purpose of treatment.
  • hemostatic clips or tissue clips have been widely used to stop bleeding or close gastrointestinal bleeding or wound sites.
  • the clamping arm In order to keep the clamping structure temporarily in the body of the surgical object, it is usually necessary to disengage the clamping structure from other components after the clamping structure clamps the target tissue (referred to as external detachment).
  • the clamping arm In the usual structure, the clamping arm is installed in the sleeve.
  • an elastic connecting piece with an outer hook is arranged between the sleeve and the rotating base, and the hook and the hole on the sleeve pass through transversely.
  • the present application provides a plug-in tissue clamping device to demonstrate a new way of detaching the clamping structure from the separation base.
  • an embodiment of the present application provides a plug-in tissue clipping device, including:
  • the clamping structure comprising at least two clamping arms for clamping the target
  • the separation base, the separation base and the clamping structure or a part of the clamping structure are integrally formed, and the two are connected by a first tearing part, and the first tearing part has a function that can be operated
  • the structure breaks under the applied external force, so that the separation base is separated from the clamping structure.
  • the separation base has a follower, and the follower is used to receive an external force to drive the separation base to break from the clamping structure at the first tearing portion.
  • it further includes a movement rod, the movement rod is set movably and connected with the clamping structure, and the clamping arm is opened and closed based on the position change of the movement rod;
  • the movement rod It has a first stroke, a second stroke and a third stroke; in the first stroke, the moving rod drives the clamping arm to open; in the second stroke, the moving rod drives the clamping arm The holding arm moves to the clamping state to clamp the target; in the third stroke, the clamping structure maintains the clamping state and separates from the moving rod, and the moving rod drives the separation base The seat and the clamping structure are separated from the first tearing portion.
  • the follower when the moving rod moves along the third stroke, the follower is located on the moving track of the moving rod, so that the separation base The clamping structure is broken from the first tear portion.
  • the follower is a limiting shaft
  • the moving rod has a limiting slot opened along its axial direction, and the limiting shaft is placed in the limiting slot.
  • the separation base includes a cylindrical main body and a suspension part, the side wall of the main body has a suspension cavity, and the suspension part is placed in the suspension cavity; the suspension part and the second A tearing part is aligned; the follower is arranged on the suspension part, and both sides of the suspension part are connected to the main body through a cantilever so that the suspension part can deform relative to the main body.
  • first tearing parts there are at least two first tearing parts and the hanging parts, the first tearing parts are distributed along the circumference of the separation base, and each of the first tearing parts There is one hanging part corresponding to the part.
  • both the first tearing portion and the hanging portion are evenly distributed around the circumference of the separation base.
  • the suspension cavity has a guide groove arranged along the axial direction of the separation base, and the suspension part is placed in the guide groove to guide the suspension part to move into the guide groove .
  • the end of the clamping structure opposite to the separation base has a concave area, and the first tearing part is arranged in the concave area.
  • the clamping structure includes at least two clamping arms, the clamping arms are connected, each clamping arm includes a clamping head and a bendable part, and the clamping head and The bendable parts are connected as a whole; the clamping arms are arranged in a jaw-type structure to clamp the target; the bendable part has the ability to bend toward the closing direction of the clamping structure and/or to the The deformation structure of the clamping structure is bent in the opening direction; the separation base and the clamping arm are integrally formed.
  • the clamping structure includes at least two clamping arms and a sleeve, one end of the clamping arm is placed in the sleeve and connected to the movement rod, and the clamping arm The other end of the sleeve protrudes out of the sleeve; the sleeve and the separation base are integrally formed, and the two are connected through the first tearing part.
  • the inserting tissue clamping device has a clamping structure for clamping the target and a separation base connected with the clamping structure, and the separation base is connected with the entire clamping structure or the clamping structure
  • a part of the integral molding structure the two are connected by the first tear part, the first tear part has a structure that can be broken under the external force applied by the operator, so that the separation base is separated from the clamping structure, and the clamping structure is realized.
  • the integrated molding structure is a whole piece of material, and the clamping structure and the separation base are naturally assembled together, with few parts, simple structure, no secondary assembly, and lower cost.
  • Fig. 1 is a schematic structural diagram of the plug-in tissue clipping device in an embodiment of the present application, in which the transmission components are omitted;
  • Fig. 2 is a partial cross-sectional view of the connection structure between the clamping structure and the transmission assembly in an embodiment of the present application;
  • Fig. 3 is a cross-sectional view of the clamping structure in an open state in an embodiment of the present application
  • Fig. 4 is a cross-sectional view of the clamping structure in a clamping state in an embodiment of the present application
  • Fig. 5 is a cross-sectional view of the clamping structure in an open state in another embodiment of the present application.
  • Fig. 6 is a schematic diagram of the integrated structure of the clamping structure and the separation base in an embodiment of the present application, and the clamping structure is in the clamping state at this time;
  • Fig. 7 is a schematic diagram of the integrated structure of the clamping structure and the separation base in an embodiment of the present application, and the clamping structure is in an open state at this time;
  • Fig. 8 is a schematic diagram of the clamping structure and the separation base after breaking from the first tear part in an embodiment of the present application
  • Fig. 9 is a partial enlarged view of the connection between the clamping structure and the separation base in an embodiment of the present application.
  • FIG. 10 is a schematic diagram of the deformation of the cantilever on the separation base after the structure shown in FIG. 9 breaks.
  • Fig. 11 is a schematic diagram of the structure when the moving rod drives the clamping structure to move to the open state in one embodiment of the present application;
  • Fig. 12 is a schematic structural view of part of the structure partially cut away in the state shown in Fig. 11;
  • Fig. 13 is a structural schematic diagram of the moving rod driving the clamping structure to move to the clamping state in one embodiment of the present application;
  • Fig. 14 is a schematic structural view of part of the structure partially cut away in the state shown in Fig. 13;
  • Fig. 15 is a structural schematic diagram of the plug-in tissue clamping device in an embodiment of the present application when it is in the clamping state and the clamping arm is locked in the locking structure;
  • Fig. 16 is a schematic structural view of a part of the clamping member cut away in the state shown in Fig. 15;
  • Fig. 17 is a schematic structural view of the separation of the retaining section and the separating section of the moving rod in an embodiment of the present application;
  • Fig. 18 is a schematic structural view of part of the structure partially cut away in the state shown in Fig. 17;
  • Fig. 19 is a schematic structural view of the clamping structure separated from the separation base in an embodiment of the present application.
  • connection and “connection” mentioned in this application include direct and indirect connection (connection) unless otherwise specified.
  • This embodiment provides a plug-in tissue clamping device (for convenience of description, hereinafter referred to as the clamping device), which is used to clamp human or animal internal tissues (collectively referred to as the target) to stop bleeding Or closure, which may include, but not limited to, hemostatic clips, tissue clips, and the like.
  • the clamping device for convenience of description, hereinafter referred to as the clamping device
  • human or animal internal tissues collectively referred to as the target
  • stop bleeding Or closure which may include, but not limited to, hemostatic clips, tissue clips, and the like.
  • the clamping device includes a clamping structure 100 , a moving rod 200 , a separation base 500 and other related structures.
  • a transmission assembly 300, a control handle 400, and other structures may also be included.
  • the clamping structure 100 cooperates with the moving rod 200 to realize clamping and opening actions.
  • an integrated structure is formed between the clamping structure 100 and the separation base 500 , and the two are connected as a whole through the first tearing portion 130 .
  • the first tearing portion 130 has a structure capable of breaking under the external force exerted by the operator, so that the separation base 500 is separated from the clamping structure 100 , as shown in FIG. 8 .
  • the clamping structure 100 can adopt various structures that can realize the purpose of opening and clamping the target object.
  • the clamping structure 100 includes at least two clamping arms 110, and the clamping arms 110 are connected. This connection can be either an integrally formed structure or a
  • the clamping arms 110 are fixedly connected as a whole.
  • Each set of clamping arms 110 includes a clamping head 1111 and a bendable portion 1112 .
  • the clamping head 1111 and the bendable portion 1112 are integrated into one body, and similarly, the integrated body may be an integrally formed structure, or may be connected into one body through fixing.
  • the clamping structure 100 is integrally formed in one piece.
  • the bendable portion 1112 has a deformable structure capable of bending toward the closing direction of the clamping structure 100 and/or bending toward the opening direction of the clamping structure 100 .
  • the separating base 500 and the entire clamping structure 100 are integrally formed, and the two are connected as a whole through the first tearing portion 130 .
  • the opening and closing of the clamping arm 110 mainly depends on the deformation of the bendable portion 1112 .
  • 4 and 5 show that in the embodiment, the initial state of the clamping structure 100 is the clamping state, that is, the clamping structure 100 is in the clamping state when the bending portion 1112 is not deformed.
  • the bendable portion 1112 has at least a deformable structure capable of bending in the opening direction of the clamping structure 100 , so as to realize the expansion of the clamping structure 100 as shown in FIGS. 3 and 6 .
  • the initial state of the clamping structure 100 may also be an expanded state, for example, when the bendable part 1112 is not deformed, the clamping structure 100 is in the expanded state shown in Figures 3 and 6 state.
  • the bendable part 1112 has at least a deformable structure capable of bending in the closing direction of the clamping structure 100 , so as to be able to move to the state shown in FIGS. 4 and 5 to realize the closing of the clamping structure 100 .
  • the bendable portion 1112 can have a deformation structure capable of bending toward the closing direction of the clamping structure 100 and bending toward the opening direction of the clamping structure 100, so that the clamping structure 100 can be opened and closed. The closing process can be changed more flexibly.
  • the clamping structure 100 includes at least two clamping arms 110 and a sleeve 140, one end of the clamping arm 110 is placed in the sleeve 140, and can be connected with the moving rod 200 connection, the other end of the clamping arm 110 protrudes out of the sleeve 140 .
  • the clamping arms 110 are assembled together by a pin, and when the clamping arms 110 are pulled into the sleeve 140, the clamping arms 110 are engaged with the front edge of the sleeve 140, and limited by the outer diameter of the sleeve 140, the clamping arms 110 exerts a reverse pressing force, and the clamping arms 110 are elastically deformed inwardly, thereby closing.
  • the clamping arm 110 when the clamping arm 110 is pushed out from the sleeve 140 and moves toward the distal end (upper in the figure), the clamping arm 110 automatically reopens due to its elastic restoring force, and the clamping structure 100 is in the Open state. By repeating this, the opening and closing of the clamping structure 100 can be realized.
  • the separating base 500 and the base 140 in the clamping structure 100 are integrally formed, and the two are connected as a whole through the first tearing part 130 .
  • the separation base 500 has a follower 550, and the follower 550 is used to receive an external force to drive the separation base 500 from the first tearing part 130 to clamp Structure 100 breaks.
  • the external force applied by the operator can be transmitted to the first tearing part 130 through the moving rod 200 or other components.
  • the movement rod 200 is used to drive the follower 550 to move.
  • the follower 550 is located on the moving track of the movement bar 200 , and when the movement bar 200 moves to the position of the follower 550 , it can drive the follower 550 to move toward the control handle 400 side together. Therefore, under the action of the moving rod 200 , the separating base 500 and the clamping structure 100 are broken from the first tearing portion 130 .
  • the movement of the movement rod 200 may be a movement along its axial direction, or a rotational movement, etc.
  • the external force exerted on the separation base 500 may also come from other components, not limited to the movement rod 200 .
  • the width of the first tearing portion 130 can be reserved according to needs, and multiple first tearing portions 130 can also be provided according to functional requirements, so as to make the structure more reliable and stable.
  • the outer detachment structure there is at least one first tear portion 130 , and the end of the clamping structure 100 opposite to the separation base 500 has an indented area 122 , the first tear portion 130 is disposed in the concave region 122 , and the separation base 500 is connected to the clamping structure 100 only through the first tearing portion 130 .
  • the separation base 500 includes a cylindrical main body 501 and a suspension part 520 .
  • the side wall of the main body 501 has a suspension cavity 510 , and the suspension part 520 is placed in the suspension cavity 510 .
  • the hanging part 520 is aligned with the first tear part 130 .
  • first tearing parts 130 and hanging parts 520 there are at least two first tearing parts 130 and hanging parts 520, and the first tearing parts 130 are distributed along the circumferential direction of the separation base 500, and each first tearing part 130 is correspondingly provided with a suspension part 520 .
  • Uniform distribution refers to the same distance or angle between adjacent first tearing portions 130 or hanging portions 520 .
  • the hanging part 520 is provided with a follower 550 , for example, the follower 550 is a limiting shaft fixedly installed on the hanging part 520 , and the limiting shaft crosses the hanging part 520 .
  • the follower 550 is used to drive the suspension part 520 to move to the side close to the control handle 400 together with the movement rod 200 when the movement rod 200 moves to the control handle 400 side.
  • the movement bar 200 may also have a sliding slot 250 , and the follower 550 is placed at the bottom of the sliding slot 250 .
  • the top of the chute 250 moves to the follower 550, thereby starting to drive the follower 550 and the suspension part 520 to Control the movement of one side of the handle 400 , thereby promoting the separation of the separation base 500 from the clamping structure 100 .
  • the follower 550 can also act as a stroke limiter for the movement rod 200, limiting the movement of the movement rod 200 within a set range, so as to limit the movement of the movement rod 200 to the far end (the side where the clamping structure 100 is located). The limit stroke, and then limit the opening stroke of the clamping structure 100.
  • both sides of the suspension part 520 are connected to the main body 501 through the cantilever 530 , so that the suspension part 520 can be deformed relative to the main body 501 more easily.
  • the separation base 500 cannot move to the side of the control handle 400 alone under the support of the rotating base 700 and the sleeve assembly 310 (see FIG. 2 ).
  • the main body 501 of the separation base 500 remains still, and the cantilever 530 of the suspension part 520 deforms under the pulling force of the moving rod 200 .
  • the main body 501 of the separation base 500 forms a reverse support for the clamping structure 100 , and then the material of the cantilever 530 and the first tear part 130 is gradually elongated.
  • the separation base 500, the moving rod 200 and the transmission assembly 300 can be taken out from the body of the surgical object.
  • the hanging part 520 is placed in the guiding slot 511 to guide the hanging part 520 to move in the guiding slot 511 .
  • the guiding direction defined by the guiding groove 511 is aligned with the first tearing portion 130 , so that the hanging portion 520 is easier to break from the first tearing portion 130 .
  • the movement rod 200 is a one-piece structure, which has a retaining section 220 and a separating section 230 .
  • the retaining section 220 and the separating section 230 are connected as a whole through the second tearing part 240 .
  • the movement rod 200 can be a pull rod or other structures.
  • the moving rod 200 when the moving rod 200 moves away from the control handle 400 along its axial direction and moves close to the clamping structure 100 (moving to the right as shown), the moving rod 200 can drive the clamping The structure 100 expands outward, thereby moving the clamping structure 100 to the expanded state.
  • FIGS. 13-14 when the moving rod 200 approaches the control handle 400 along its axial direction and moves away from the clamping structure 100 (moving to the left as shown), the moving rod 200 can drive the clamping The structures 100 approach each other inwardly, thereby moving the clamping structures 100 to the clamping state.
  • the kinematic relationship between the moving rod 200 and the clamping structure 100 may be different from that shown in FIGS. Open, when moving towards the clamping structure 100, drive the clamping structure 100 to close.
  • the movement rod 200 may have a first stroke, a second stroke and a third stroke.
  • the first stroke, the second stroke and the third stroke are three parts in the whole motion stroke of the movement rod 200, and the three strokes may be in the same direction, or at least two strokes may be in different directions.
  • the movement rod 200 is in the first stroke, and at this moment, the movement rod 200 is away from the control handle 400 along its axial direction, and is close to the clamping structure 100 (shown to Right movement), the movement rod 200 can drive the clamping structure 100 to expand outward, so that the clamping structure 100 moves to the opened state.
  • the movement rod 200 is in the second stroke, the movement rod 200 approaches the control handle 400 along its axial direction, and when it moves away from the clamping structure 100 (moving to the left as shown), the movement rod 200 can drive the clamping structures 100 inwardly close to each other, so that the clamping structures 100 move to the clamping state.
  • the movement rod 200 is in the third stroke, the movement rod 200 approaches the control handle 400 along its axial direction, and when it moves away from the clamping structure 100 (moving to the left as shown), the third The stroke is in the same direction as the second stroke and closely connected, that is, when the clamping structure 100 moves to the clamping state, the moving rod 200 switches from the second stroke to the third stroke.
  • the third stroke can be further divided into a plurality of sub-strokes, and these sub-strokes include a locking stroke, an inner disengagement stroke and an outer disengagement stroke.
  • the moving rod 200 After the moving rod 200 completes the locking stroke, it enters the inner disengagement stroke.
  • the clamping structure 100 and the retaining section 220 are broken from the separation section 230 together, and the moving bar 200 can no longer drive the clamping structure 100 to move, and the control of the clamping structure 100 is lost.
  • the clamping structure 100 is held in a locked state.
  • the movement stroke of the movement rod 200 is the inner disengagement stroke.
  • the movement rod 200 After the movement rod 200 completes the inner disengagement stroke, it enters the outer disengagement stroke.
  • the clamping structure 100 is separated from the separation base 500 at this moment. So far, the clamping structure 100 is left on the object it clamps.
  • the separation base 500, the moving rod 200 and the transmission assembly 300 can be withdrawn from the object.
  • the movement stroke of the movement rod 200 is the outer disengagement stroke.
  • the moving rod 200 and the clamping body 110 can also be separated by other internal disengagement structures, such as the internal separation of the pull rod and the clamping arm in the prior art. out of structure etc.
  • the separation base 500 has a stop structure 540 located on the moving path of the retaining section 220 .
  • the stop structure 540 prevents the retaining section 220 from continuing to move with the moving rod 200 and the separating section 230, so as to help the retaining section 220 and Separation section 230 separates.
  • the moving rod 200 has a slot 260 along its axial direction, and the stop structure 540 protrudes toward the moving rod 200 and extends into the slot 260 . At least one side wall of the groove 260 is located on the retaining section 220. When the movement rod 200 moves along the inner disengagement stroke, the stop structure 540 can abut against the groove wall of the groove 260 .
  • the clamping structure 100 includes a connecting portion 120 .
  • the connecting part 120 , the bendable part 1112 and the clamping head 1111 are sequentially connected to form an integral structure.
  • the separation base 500 is integrally formed with the connection part 120 , for example connected as a whole through the first tear part 130 .
  • the connecting portion 120 has a locking structure 121 , and the locking structure 121 is used to lock the clamping structure 100 in the clamping state.
  • the clamping structure 100 may not include the connecting portion 120, and the locking structure 121 may be directly disposed on the bendable portion 1112 or other structures.
  • the locking structure 121 is used to lock the clamping structure 100 in the clamping state.
  • the locking structure 121 can at least prevent the clamping structure 100 from moving toward the opening direction, so as to ensure that the clamping structure 100 is always in a clamping state.
  • the locking structure 121 can also prevent the clamping structure 100 from moving toward the control handle 400 at the same time, which facilitates the separation of the clamping structure 100 from the moving rod 200 .
  • the movement bar 200 has a locking fit 210 .
  • the locking fitting portion 210 is specifically disposed on the retaining section 220 .
  • the locking structure 121 is located on the moving path of the locking fitting part 210; when the locking fitting part 210 moves to the locking structure 121, the two form a locking fit, and the clip The holding structure 100 remains in the holding state.
  • the clamping structure 100 is formed into a cylindrical structure.
  • One end of the movement rod 200 protrudes into the cylindrical structure and is connected with the clamping structure 100 .
  • the locking fitting part 210 includes an elastic piece protruding toward the clamping structure 100 , the elastic piece is integrally formed on the movement bar 200 , and the elastic piece is inclined toward the distal side of the clamping structure 100 along the protruding direction.
  • the locking structure 121 includes a slot capable of cooperating with the elastic body.
  • the elastic body is located in the clamping structure 100 and is in a state of extrusion deformation, and the elastic body can be engaged with the slot under the action of elastic force.
  • the elastic piece shown in this illustration is only an example of the locking fitting part 210.
  • other structures that may realize the locking function can also be used, for example, the clamping arm 110 disclosed in the prior art can be used.
  • the locking method of the movement rod 200 and the sleeve 140 can be used.
  • the locking structures 121 are evenly distributed around the circumference of the clamping structure 100 (that is, the intervals between adjacent locking structures 121 are the same angle), and the locking matching portion 210 and the clamping structure 100 are opposite to each other, and can also be evenly distributed around the circumference of the movement rod 200 .
  • the retaining section 220 is connected to the clamping structure 100 through a clamping member connection structure 600 .
  • the clip connecting structure 600 includes at least two connecting rods 610 , two connecting rods 610 are shown in the figure. One ends of the two connecting rods 610 are connected to the distal end of the moving rod 200 and can rotate around the axis 620 at the same time, and the other ends are respectively connected to the horizontal axis on the clamping head 1111 and can also rotate around the horizontal axis.
  • Each connecting rod 610 is coaxial with the rotation center of the moving rod 200 , or may not be coaxial.
  • the structure of the connecting rod 610 is similar to a Y shape, and the purpose is to effectively transmit the pushing and pulling force of the moving rod 200 up and down to the clamping head 1111 to realize the opening and closing control of the clamping head 1111 .
  • the clamping structure 100 can be controlled to open and switch to the opened state.
  • the clamping structures 100 can be controlled to approach each other and switch to the clamping state.
  • clamping structure 100 Due to the elasticity of the clamping structure 100, after being inserted into the body of the surgical object, when the clamping structure 100 is in an open state and is ready to clamp a certain object, if the clamping structure 100 touches the surrounding tissue by mistake, the clamping structure 100 will be closed. trend.
  • the moving rod 200 can reciprocate along its axial direction, for example, in FIGS. 3 and 4 , it can move upward and downward along its axial direction.
  • the line B connecting the rotation center of the clamping arm 110 makes the clamping structure 100 open and form a self-lock. Keep the clamping structure 100 in an open state, and cannot be easily closed by external force, and can only be retracted by controlling the clamping head 1111 through the control handle 400 .
  • the moving rod 200 is hindered by the top dead center of the central axis and cannot continue to move upward. Therefore, the clamping arm 110 can not be closed automatically. lock effect.
  • the moving rod 200 can move down the stroke under human control, change the axial angle between the connecting rod 610 and the moving rod 200, and when it is greater than 90 degrees, the self-locking can be released and the closure can be realized.
  • clamping member connection structure 600 can also be connected by other structures, for example, various connection modes between the clamping arm 110 and the pull rod disclosed in the prior art.
  • the bendable portion 1112 is a semi-cylindrical structure, and when the clamping structure 100 is closed, the bendable portion 1112 can be enclosed into a cylindrical structure.
  • the semi-cylindrical shape refers to an incomplete cylindrical shape, which is not necessarily half of the cylindrical structure, but can also be one-third of the entire cylindrical structure or other sizes.
  • the bendable portion 1112 can also be in other structures, such as a sheet, and is not limited to the semi-cylindrical structure.
  • the claw-type structure is a structure capable of firmly grasping the target.
  • the target can be grasped.
  • they may have different jaw-type structures, for example, when there are three clamping arms 110, the three clamping arms 110 may be arranged in a triangle , to grab the target.
  • the bending deformation resistance of the clamping head 1111 is higher than that of the bendable portion 1112, so as to ensure that the clamping arm 110 provides a better bite effect to the target object.
  • the bending deformation of the bendable part 1112 is realized through its structural deformation, for example, it can be realized by setting shrinkage seams on the bendable part 1112 that can shrink and deform, or it can be realized by changing the material thickness of the bendable part 1112, or by selecting More easily deformable materials, of course, can also be achieved through other structures.
  • the bending deformation of the bendable portion 1112 is reversible, that is, the bendable portion 1112 has elasticity and can rebound and reset when the external force is lost, so this bending deformation can be repeated.
  • the sleeve 140 shown in FIG. 7 is omitted, and the clamping arm 110 is directly driven by the moving rod 200, combined with the deformation state of the bendable part 1112, thereby realizing clamping.
  • the opening and closing of the holding structure 100 Due to the absence of the limiting effect of the sleeve 140 on the clamping arm 110, the clamping arm 110 starts to deform from the bendable portion 1112, and its deformed area is closer to the bottom of the entire clamping structure 100. Therefore, under the same opening width requirement, The length of the clamping structure 100 is shorter than the combination of the clamping arm 110 and the sleeve 140 in the prior art.
  • the clamping structure 100 can open a larger angle than the combination of the clamping arm 110 and the sleeve 140 in the prior art, and it is easier to bite into the tissue of the target.
  • the structure of the clamping structure 100 avoids the fit clearance of parts necessary for shaft-hole fit or sliding displacement, so the bending repeatability of the clamping arm 110 is higher.
  • the structure is simpler, the assembly requirements are lower, the cost is greatly reduced, and the control accuracy is higher. high.
  • the length of the entire clamping structure 100 is also shorter than that of existing hemostatic clips (or tissue clips). Since the inner diameter of the endoscopic instrument channel is very limited, the shorter clamping structure 100 is easier to pass through the endoscopic instrument channel.
  • the bending deformation of the bendable part 1112 is realized through its integral structure.
  • the end of the clamping structure 100 where the clamping head 1111 is located is the distal end, and the end away from the clamping head 1111 is the proximal end, from the proximal end of the clamping structure 100 to its The direction of the distal end is the longitudinal direction of the clamping structure 100 .
  • the deformed structure includes several first shrinkage seams 1113, and the first shrinkage seams 1113 are arranged in sequence along the longitudinal direction.
  • the clamping structure 100 is kept in the clamping state in the initial state, the first contraction joints 1113 are maintained in the initial state, and each part of the bendable part 1112 is not deformed.
  • the bendable portion 1112 changes outward, and the first contraction seam 1113 contracts and deforms, so that the outer side of the bendable portion 1112 (the side where the clamping arms 110 are away from each other) ) shrinks, making the entire clamping head 1111 open.
  • the first contraction slit 1113 extends around the circumference of the bendable portion 1112 .
  • the first contraction joints 1113 are arranged in parallel.
  • the first contraction joints 1113 may be arranged in other shapes besides being parallel to each other.
  • the first contraction joints 1113 are uniformly arranged in parallel along the circumferential direction of the bendable portion 1112 , so that the bending deformation direction of each first contraction joint 1113 can be unified, so that the bending deformation of the clamping structure 100 is smoother and more stable.
  • the bushing assembly 310 may generally include a spring support sleeve 311 , and the transmission member 320 (such as a traction control wire) is passed through the spring support sleeve 311 .
  • the moving rod 200 can be fixedly connected with the transmission member 320 through a diameter reducing adapter 321 or other structures.
  • the spring support sleeve 311 is covered with an adapter tube 312, and the adapter tube 312 is rotatably connected with the rotating base 700, and the clamping structure 100 is installed on the rotating base 700, so that the entire clamping structure 100 can be opposed to the transmission assembly 300 together with the rotating base 700. turn.

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Reproductive Health (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

L'invention concerne un appareil de serrage de tissu insérable, pourvu d'une structure de préhension (100) utilisée pour saisir une cible, et d'une base de séparation (500) reliée à la structure de préhension (100). La base de séparation (500) est une structure formée d'un seul tenant avec la totalité de la structure de préhension (100) ou une partie de la structure de préhension (100), et les deux sont reliées au moyen d'une première partie de déchirure (130), la première partie de déchirure (130) étant pourvue d'une structure qui peut être rompue sous une force externe appliquée par un opérateur, de manière à séparer la base de séparation (500) et la structure de préhension (100), et atteindre l'objectif de maintenir temporairement la structure de préhension (100) dans le corps d'un sujet chirurgical. La structure formée d'un seul tenant est constituée d'une seule pièce de matériau, et la structure de préhension (100) et la base de séparation (500) sont naturellement assemblées l'une à l'autre.
PCT/CN2022/082114 2022-03-21 2022-03-21 Appareil de serrage de tissu insérable Ceased WO2022257541A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2022/082114 WO2022257541A1 (fr) 2022-03-21 2022-03-21 Appareil de serrage de tissu insérable
CN202280005414.6A CN115867213A (zh) 2022-03-21 2022-03-21 插入式组织夹闭装置

Applications Claiming Priority (1)

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PCT/CN2022/082114 WO2022257541A1 (fr) 2022-03-21 2022-03-21 Appareil de serrage de tissu insérable

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WO2022257541A1 true WO2022257541A1 (fr) 2022-12-15

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