gripping device

Abstract

The present invention provides a holding device having a fixed arm disposed between a first movable arm and a second movable arm, a feeder, a slide capable of opening and closing the first movable arm, and a stopper that limits movement of the slide. The first movable arm and the fixed arm are capable of opening and closing, and in a state in which the first movable arm and the fixed arm are closed, the stopper limits movement of the slide, thereby enabling restriction of movement of the first movable arm relative to the fixed arm in an opening direction. In a state in which the stopper limits movement of the slide, the second movable arm and the fixed arm are capable of opening and closing. The holding device according to the present invention enables holding even when the shape of a tissue is large or irregular, and enables easy operation of each automated arm or changing of the position of a held tissue while maintaining a state in which the tissue is held.

Description

Technical Field

[0001] This invention relates to a clamping device. Background Technology

[0002] Endoscopic procedures utilize clamps in endoscopic treatments, enabling operations such as ligating the resected area to achieve hemostasis. The clamps of the endoscopic procedure are locked while holding the resected area and remain in the lumen.

[0003] Patent Document 1 describes an endoscopic treatment device with a clamp at its front end, which includes a fixed arm and two movable arms disposed on either side of the fixed arm. Furthermore, the endoscopic treatment device has an operating section at its base end, opposite to the front end. The two operating section bodies (handles) of the operating section have sliders that allow for independent opening and closing of the two movable arms. First, the surgeon brings the clamp close to the tissue surrounding the treated resection portion, and operates the slider on one side to open and close the movable arm corresponding to that slider, clamping a portion of the tissue. To keep the movable arm holding the tissue portion closed, the surgeon locks the opening and closing of the movable arm. Next, while the tissue portion is clamped, the surgeon operates the slider on the other side to open and close the movable arm corresponding to that slider, clamping the remaining tissue portion and locking it to ligate the resection portion. Then, the surgeon leaves only the clamp with the ligated resection portion inside the lumen.

[0004] [Existing Technical Documents]

[0005] [Patent Documents]

[0006] [Patent Document 1] Chinese Patent Publication CN111481304A Summary of the Invention

[0007] [The technical problem this invention aims to solve]

[0008] However, the endoscopic treatment device described in Patent Document 1 cannot be unlocked after the movable arm is locked, which means the surgeon cannot change the position of the tissue clamping device. In addition, if the tissue is clamped in the unlocked and closed state of the movable arm, the surgeon has to operate the other sliding member while keeping one sliding member stationary, making the operation of the endoscopic treatment device complicated.

[0009] The present invention was made in view of the above circumstances, and its object is to provide a clamping device that can clamp even large or irregularly shaped tissues, and can facilitate the operation of the respective moving arms or change the position of the clamped tissue while maintaining the state of the clamped tissue.

[0010] Technical solutions to the technical problems

[0011] To address the aforementioned technical problems, the present invention proposes the following technical solution.

[0012] A clamping device according to one aspect of the present invention includes a handling unit and a feeder. The handling unit includes: a fixed arm, a first movable arm and a second movable arm that can be independently opened and closed relative to the fixed arm, and a clamp holding unit capable of locking the first movable arm and the second movable arm in a closed state. The feeder includes an operating unit, which has a first sliding member and a second sliding member, a first operating unit body that slidably supports the first sliding member, and a second operating unit body that slidably supports the second sliding member. The feeder opens and closes the first movable arm relative to the fixed arm via the first sliding member and opens and closes the second movable arm relative to the fixed arm via the second sliding member. The first sliding member and the second sliding member are respectively... A locking position is provided within the sliding range of the device. In the locking position, the base ends of the first movable arm and the second movable arm are locked to the clamp holding part. The clamping device also includes a stop member. The stop member can be set in a locking position relative to the first operating part body and the second operating part body within the respective sliding range of the first sliding member and the second sliding member, thereby restricting the sliding of the corresponding sliding member of the first sliding member and the second sliding member toward the front end. When the stop member is in the locking position, the stop member is located further to the front end than the corresponding sliding member of the first sliding member and the second sliding member, and the locking position is located further to the front end than the locking position.

[0013] Another aspect of the clamping device of the present invention includes a fixed arm disposed between a first movable arm and a second movable arm, a feeder, a slider capable of opening and closing the first movable arm, and a stop member restricting the movement of the slider. The first movable arm and the fixed arm are capable of opening and closing. In the closed state of the first movable arm and the fixed arm, the stop member restricts the movement of the slider, thereby restricting only the movement of the first movable arm relative to the fixed arm in the opening direction. In the state where the movement of the slider is restricted by the stop member, the second movable arm and the fixed arm are capable of opening and closing.

[0014] [Invention Effects]

[0015] According to the clamping device of the present invention, even large or irregularly shaped tissues can be clamped, and while maintaining the state of the clamped tissue, the operation of the respective moving arms can be made easier or the position of the clamped tissue can be changed. Attached Figure Description

[0016] Figure 1 This is a diagram showing the overall structure of the clamping device according to the first embodiment of the present invention.

[0017] Figure 2 This diagram shows the clamping device with its handling section open.

[0018] Figure 3 This is a diagram showing the first movable arm of the clamping device's handling section in an open state, viewed from the left side in the thickness direction.

[0019] Figure 4 This is a diagram showing the second movable arm of the clamping device's handling section in an open state, viewed from the right side in the thickness direction.

[0020] Figure 5 This is a diagram showing the first movable arm of the handling section of the clamping device.

[0021] Figure 6 This is a diagram showing the second movable arm of the handling section of the clamping device.

[0022] Figure 7 This is a diagram showing the fixed arm of the clamping device.

[0023] Figure 8 This is a diagram showing the traction component of the feeder of the clamping device.

[0024] Figure 9 This is a diagram showing the operating part of the feeder of the clamping device.

[0025] Figure 10 This is a diagram showing the operating part of the feeder of the clamping device viewed from the top (or bottom) in the opening and closing direction (vertical direction).

[0026] Figure 11 This is a diagram showing the stop of the clamping device.

[0027] Figure 12 This is a cross-sectional view showing the operating part and stop of the feeder of the clamping device.

[0028] Figure 13 This diagram schematically shows the state in which the first movable arm of the handling section of the clamping device is opened, bringing the handling section closer to the first part of the tissue to be clamped, and the state of the operating section at this time.

[0029] Figure 14 This diagram schematically shows the state of the first movable arm of the clamping device closing, clamping the first part of the tissue, and the state of the operating part at this time.

[0030] Figure 15The diagram schematically shows the state in which the first movable arm of the clamping device is closed, clamping the first part of the tissue, and the state in which a stop is installed on the first operating part at this time.

[0031] Figure 16 This diagram schematically shows the state in which the first movable arm of the handling section of the clamping device clamps the first part of the tissue, while the second movable arm is opened, causing the handling section to move closer to the second part of the tissue to be clamped, and the state of the operating section and the stop member at this time.

[0032] Figure 17 This diagram schematically shows the state of the second movable arm of the clamping device closing, clamping the second part of the tissue, and the state of the operating part and the stop at this time.

[0033] Figure 18 The diagram schematically illustrates the state of the second movable arm of the clamping device while the second part of the tissue is clamped, the stop installed on the first operating part is removed, the first movable arm of the treatment part is opened again, and the treatment part is brought close to a third part that is different from the first part of the tissue, and the state of the operating part at this time.

[0034] Figure 19 The diagram schematically shows the state in which the first movable arm of the clamping device is closed, clamping the third part of the tissue, and the state in which a stop is installed on the first operating part.

[0035] Figure 20 This diagram schematically shows the state of the treatment section of the clamping device holding the tissue, the state of the treatment section remaining in the clamping device, and the state of the operating section and the stop at this time.

[0036] Figure 21 This is a diagram showing the operation section of the feeder of the clamping device according to the second embodiment of the present invention viewed from above in the opening and closing direction (vertical direction).

[0037] Figure 22 This is a perspective view showing the stop of the clamping device.

[0038] Figure 23 This is a cross-sectional view showing the stop of the clamping device.

[0039] Figure 24 This is a perspective view showing the operating part and the stop of the clamping device.

[0040] Figure 25 This is a diagram illustrating a modified example of the clamping device of the present invention.

[0041] Figure 26 The figure illustrates other variations of the clamping device of the present invention.

[0042] Figure 27 The figure illustrates other variations of the clamping device of the present invention.

[0043] Figure 28 This is a diagram illustrating a modified example of the clamping device of the present invention. Detailed Implementation

[0044] (First Implementation)

[0045] Regarding the clamping device (endoscopic treatment device) 100 of the first embodiment of the present invention, refer to... Figures 1 to 20 Please provide an explanation. Figure 1 This is a diagram showing the overall structure of the clamping device (endoscopic treatment device) 100 according to the first embodiment of the present invention.

[0046] In the embodiments or variations described below, some corresponding features are labeled with the same symbols, and repeated descriptions are omitted. Furthermore, in the following description, expressions indicating relative or absolute configurations, such as "parallel," "orthogonal," "center," and "coaxial," do not strictly refer to such configurations, but also indicate a state of relative displacement by angle or distance with tolerances or a degree to which the same function can be achieved. Moreover, the term "patient" as used in this specification includes any living organism and includes the term "subject." A patient can be a human or an animal.

[0047] [Clamping device (endoscopic handling instrument) 100]

[0048] Figure 1 This diagram shows the overall structure of the clamping device (endoscopic treatment instrument) 100. The clamping device 100 includes a treatment section (clamp) 1, a feeder 200, and a stop member 300. Additionally, the feeder 200 includes a traction member 5 (see reference). Figure 8 ), Operation line (line) 6 (reference) Figure 8 The clamping device 100 includes a sheath 7 and an operating section 8. In the following description, the side of the handling section 1 along the longitudinal direction A of the clamping device 100 will be defined as the front end side (far side) A1 of the clamping device 100, and the side of the operating section 8 of the feeder 200 of the clamping device 100 will be defined as the base end side (proximal side) A2 of the clamping device 100. In the clamping device 100, the handling section 1, the traction member 5 of the feeder 200, the operating line 6, the sheath 7, and the operating section 8 are arranged sequentially from the front end side A1 to the base end side A2.

[0049] The clamping device 100 is used, for example, with an endoscope (not shown). More specifically, the surgeon operates the operating part 8 of the feeder 200 to insert the sheath 7 and the disposal part 1 located on the front end side A1 of the sheath 7 into the disposal instrument channel formed in the endoscope, guiding the disposal part 1 to the vicinity of the living tissue within the lumen to be disposed of, thereby enabling the clamping device 100 to dispose of the living tissue. In this embodiment, the endoscope used with the clamping device 100 can be various flexible endoscopes.

[0050] [Disposal Section (Clamping Fixture) 1]

[0051] Figure 2 This diagram shows the handling section 1 of the clamping device 100 in an open state.

[0052] The treatment unit (clamp) 1 is a useful clamp for patient treatment procedures such as preventing tissue bleeding, perforation and hemostasis closure, suture contraction of internal injuries, marking lesions and traction sites (mucosal protrusions), and other surgical procedures. The treatment unit 1 is detached from the supply device 200 by the surgeon's manipulation and remains in the lumen. For example... Figure 2 As shown, the processing unit 1 includes a fixed arm (central arm, third arm) 2, a movable arm 3, and a clamp holding unit 4. Here, the movable arm 3 has a first movable arm (first arm) 31 and a second movable arm (second arm) 32 that open and close relative to the fixed arm 2. The first movable arm 31 and the second movable arm 32 are provided on both sides of the fixed arm 2 and open independently in opposite directions.

[0053] The opening and closing direction of the movable arm 3 of the processing unit 1 relative to the fixed arm 2 is defined as the opening and closing direction B or the up-down direction B. The direction in which the first movable arm 31 opens after leaving the fixed arm 2 is defined as the upper side B1, and the direction in which the second movable arm 32 opens after leaving the fixed arm 2 is defined as the lower side B2. The direction orthogonal to the length direction A and the opening and closing direction B is defined as the thickness direction C or the left-right direction C.

[0054] [Fixed arm (central arm, third arm) 2]

[0055] Figure 7 This is a diagram showing the fixed arm (central arm, third arm) 2 of the handling section 1 of the clamping device 100.

[0056] like Figure 2 and Figure 7 As shown, the fixed arm (central arm, third arm) 2 is a rod-shaped member disposed between the movable arms 3 along the length direction A. The fixed arm 2 has a rod portion 20A formed on the front end side A1 and a bottom connecting portion 20B formed on the base end side A2.

[0057] like Figure 7As shown, the rod portion 20A is, for example, a generally cylindrical rod-shaped member formed of a biocompatible material. The outer surface of the rod portion 20A is entirely exposed, allowing it to contact tissue. The rod portion 20A has a front end portion 2a and a rod-shaped portion 2b.

[0058] The front end portion 2a is located at the front end of the rod-shaped portion 2b. Compared to the rod-shaped portion 2b, the front end portion 2a is formed into a roughly circular plate shape with a larger radial dimension than the rod-shaped portion 2b. Therefore, by attaching the front end portion 2a to the living tissue, the fixing arm 2 can be anchored to the living tissue.

[0059] The rod-shaped portion 2b is a generally circular rod-shaped member with a front end portion 2a at the front end. The rod-shaped portion 2b has a first opposing surface 25, a second opposing surface 26, and a plurality of protrusions 27.

[0060] The first opposing surface 25 is formed on the rod-shaped portion 2b and is the surface opposite to the first movable arm 31 provided on the upper side B1 in the opening and closing direction B.

[0061] The second opposing surface 26 is formed on the rod-shaped portion 2b and is the surface opposite to the second movable arm 32 provided on the lower side B2 in the opening and closing direction B.

[0062] like Figure 2 and Figure 7 As shown, multiple protrusions 27 are provided on the protruding portion of the fixed arm 2. Each protrusion 27 includes a first protrusion 27a provided on the first opposing surface 25 and a second protrusion 27b provided on the second opposing surface 26. The first protrusion 27a protrudes from the first opposing surface 25 toward the first movable arm 31 positioned at the upper side B1 in the opening / closing direction B. The second protrusion 27b protrudes from the second opposing surface 26 toward the second movable arm 32 positioned at the lower side B2 in the opening / closing direction B.

[0063] A connecting portion 20B is provided on the base end side A2 of the rod portion 20A. The connecting portion 20B is plate-shaped, and its thickness direction is approximately aligned with the thickness direction C. Here, in the thickness direction C, the side opposite to the connecting portion 20B is defined as the left side C1. Furthermore, in the thickness direction C, the direction opposite to the left side C1 relative to the connecting portion 20B is defined as the right side C2. The connecting portion 20B connects the fixed arm 2 and the movable arm 3, the clamp holding portion 4 (described later), and the traction member 5. Figure 7 As shown, the connecting part 20B has a through hole 21, a through hole 22, a connecting groove 23 and a tail 24.

[0064] The through hole 21 is a hole that penetrates the connecting portion 20B in the thickness direction C. The through hole 21 is formed on the front end side A1 of the connecting portion 20B. The first rotating pin 211 is engaged with the through hole 21 from the left side C1.

[0065] The through hole 22 is a hole that penetrates the connecting portion 20B in the thickness direction C. The through hole 22 is formed on the front end side A1 of the connecting portion 20B. The second rotating pin 221 is engaged with the through hole 22 from the right side C2.

[0066] The connecting groove 23 is formed in the connecting portion 20B and extends into the groove along the length direction A. The connecting groove 23 is a groove that penetrates the connecting portion 20B in the thickness direction C.

[0067] Tail portion 24 is formed on the base end side A2 of the connecting portion 20B of the fixed arm 2. Tail portion 24 is connected to the clamp holding portion 4 described later.

[0068] [Movable Arm 3]

[0069] Figure 3 This is a diagram showing the first movable arm (first arm) 31 of the handling section 1 of the clamping device 100 in an open state, viewed from the left side C1 in the thickness direction C. Figure 4 This is a diagram showing the second movable arm (second arm) 32 of the handling section 1 of the clamping device 100 in an open state, viewed from the right side C2 in the thickness direction C. Figure 5 This is a diagram showing the first movable arm 31 of the handling section 1 of the clamping device 100. Figure 6 This is a diagram showing the second movable arm 32 of the handling section 1 of the clamping device 100. (See diagram below.) Figures 2 to 6 As shown, the movable arm 3 has a first movable arm 31 and a second movable arm 32. The first movable arm 31 is disposed on the upper side B1 of the fixed arm 2 in the opening and closing direction B. The second movable arm 32 is disposed on the lower side B2 of the fixed arm 2 in the opening and closing direction B. The first movable arm 31 and the second movable arm 32 can perform opening and closing actions independently.

[0070] like Figure 2 , Figure 3 and Figure 5 As shown, the first movable arm (first arm) 31 is configured to open and close relative to the fixed arm 2 in the opening / closing direction B, towards the upper side B1. Specifically, the first movable arm 31 is rotatably mounted relative to the fixed arm 2 via a first rotating pin 211 provided in the first through hole 313. The first movable arm 31 has a first sliding groove 310, a first connecting portion 311, a first through hole 313, and a first arm portion 312.

[0071] like Figure 5 As shown, the first sliding groove 310 is disposed on the base end side A2 of the first movable arm 31. The first sliding groove 310 is engaged with the first sliding pin 511, which will be described later.

[0072] The first engaging portion 311 is located at the base end A2 of the first movable arm 31 and is an elastic member that is elastic in the opening and closing direction B. The first engaging portion 311 is, for example, a leaf spring. When the first movable arm 31 is closed relative to the fixed arm 2, the first engaging portion 311 is housed inside the clamp holding portion 4. Specifically, as... Figure 3 As shown, when the first movable arm 31 is open relative to the fixed arm 2, the first engagement portion 311 is located outside the clamp holding portion 4, which will be described later. On the other hand, as... Figure 2 As shown, when the first movable arm 31 is closed relative to the fixed arm 2, the first connecting portion 311 is housed inside the clamp holding portion 4. When the first movable arm 31 is closed relative to the fixed arm 2, the length L1 of the first connecting portion 311 in the opening / closing direction B is approximately the same as or slightly larger than the inner diameter of the clamp holding portion 4.

[0073] In this embodiment, when the first movable arm 31 transitions from a closed state to an open state relative to the fixed arm 2 in the opening / closing direction B, the first connecting portion 311 rotates together with the first movable arm 31, entering the interior of the clamp holding portion 4 from its base end. During the process of the first connecting portion 311 entering the interior of the clamp holding portion 4, in order to prevent damage to the inner circumferential surface of the clamp holding portion 4, preferably, the portions of the first connecting portion 311 that contact the clamp holding portion 4 are processed into rounded corners or chamfered.

[0074] The first through hole 313 is a hole that passes through the first movable arm 31 in the thickness direction C. The first through hole 313 is positioned on the left side C1 relative to the through hole 21 provided in the fixed arm 2 in the thickness direction C, and engages with the first rotating pin 211. The first rotating pin 211 connects the first through hole 313 and the through hole 21. According to this structure, the first movable arm 31 can rotate relative to the fixed arm 2 about the first through hole 313.

[0075] The first arm 312 can be rotated relative to the fixed arm 2 along the opening / closing direction B, so that its front end can approach the front end 2a of the fixed arm 2, thereby clamping living tissue. The first arm 312 has a first gripping surface 312a and a first outer surface 312b.

[0076] The first gripping surface 312a is the inner surface that contacts the tissue in the opening / closing direction B and is opposite to the fixed arm 2. The first outer surface 312b is the surface provided in the opening / closing direction B on the side opposite to the first gripping surface 312a. The first arm portion 312 is formed such that, in the opening / closing direction B, a recess is formed on the side of the first gripping surface 312a, and a rounded bulge is formed on the side of the first outer surface 312b. Therefore, when the tissue is clamped by the first movable arm 31 and the fixed arm 2, the tissue is accommodated in the recessed portion of the first movable arm 31.

[0077] The first arm portion 312 is not limited to the shape of this embodiment and can adopt various conventional structures. For example, in order to reliably grip living tissue, the first arm portion 312 can be formed into a claw shape at its front end.

[0078] like Figure 2 , Figure 4 and Figure 6 As shown, the second movable arm (second arm) 32 is configured to open and close relative to the fixed arm 2 in the lower side B2 of the opening and closing direction B. Specifically, the second movable arm 32 is configured relative to the fixed arm 2 in a manner that allows it to open and close in the opposite direction to the first movable arm 31 via a second rotating pin 221 provided in the second through hole 323. The second movable arm 32 has a second sliding groove 320, a second connecting portion 321, a second through hole 323, and a second arm portion 322.

[0079] like Figure 6 As shown, the second sliding groove 320 is disposed on the base end side A2 of the second movable arm 32. The second sliding groove 320 is engaged with the second sliding pin 521, which will be described later.

[0080] The second connecting portion 311 is provided on the base end side A2 of the second movable arm 32 and is an elastic member that is elastic in the opening and closing direction B. The second connecting portion 321 is, for example, a leaf spring. When the second movable arm 32 is closed relative to the fixed arm 2, the second connecting portion 321 is housed inside the clamp holding portion 4. Specifically, as... Figure 4 As shown, with the second movable arm 32 open relative to the fixed arm 2, the second engagement portion 321 is located outside the clamp holding portion 4, which will be described later. On the other hand, as... Figure 2 As shown, when the second movable arm 32 is closed relative to the fixed arm 2, the second connecting portion 321 is housed inside the clamp holding portion 4. When the second movable arm 32 is closed relative to the fixed arm 2, the length L2 of the second connecting portion 311 in the opening / closing direction B is approximately the same as or slightly larger than the inner diameter of the clamp holding portion 4.

[0081] In this embodiment, when the second movable arm 32 transitions from a closed state to an open state relative to the fixed arm 2 in the opening / closing direction B, the second connecting portion 321 rotates together with the second movable arm 32, entering the interior of the clamp holding portion 4 from its base end. During the process of the second connecting portion 321 entering the interior of the clamp holding portion 4, in order to prevent damage to the inner circumferential surface of the clamp holding portion 4, preferably, the portions of the second connecting portion 321 that contact the clamp holding portion 4 are processed into rounded corners or chamfered.

[0082] The second through hole 323 is a hole that penetrates the second movable arm 32 in the thickness direction C. The second through hole 323 is located on the right side C2 compared to the through hole 21 provided in the fixed arm 2 in the thickness direction C, and engages with the second rotating pin 221. The second rotating pin 221 connects the second through hole 323 and the through hole 22. According to this structure, the second movable arm 32 can rotate relative to the fixed arm 2 about the second through hole 323.

[0083] The second arm 322 can be rotated relative to the fixed arm 2 along the opening / closing direction B, allowing its front end to approach the front end 2a of the fixed arm 2, thereby clamping living tissue. The second arm 322 has a second gripping surface 322a and a second outer surface 322b.

[0084] The second gripping surface 322a is the inner surface that contacts the tissue in the opening / closing direction B and is opposite to the fixed arm 2. The second outer surface 322b is the surface provided in the opening / closing direction B on the side opposite to the second gripping surface 322a. The second arm portion 322 is formed such that, in the opening / closing direction B, a recess is formed on the side of the second gripping surface 322a, and a rounded bulge is formed on the side of the second outer surface 322b. Therefore, when the tissue is clamped by the second movable arm 32 and the fixed arm 2, the tissue is contained in the recessed portion of the second movable arm 32.

[0085] Similar to the first arm 312, the second arm 322 is not limited to the shape of this embodiment. For example, in order to reliably hold living tissue, the second arm 312 may be formed in a claw shape at the front end.

[0086] [Clamp holding part 4]

[0087] like Figure 2 As shown, the clamp holding part 4 has a length axis and is formed as a cylindrical tube. In this embodiment, the clamp holding part 4 is arranged along the length direction A. The clamp holding part 4 can at least allow the base ends of the movable arm 3 and the fixed arm 2, which are in the closed state, to enter its interior. In addition, if the clamping device 100 is rotated circumferentially, the clamp holding part 4 rotates together with the first movable arm 31 and the second movable arm 32.

[0088] The clamp holding part 4 has a groove 41. The groove 41 is formed on the front end side A1 of the clamp holding part 4, and on the upper side B1 and lower side B2 in the opening and closing direction B. The groove 41 is, for example, a slit formed from the front end toward the base end side A2, and the degree to which the first connecting part 311 of the first movable arm 31 and the second connecting part 321 of the second movable arm 32 can enter the interior of the clamp holding part 4.

[0089] The clamp holding part 4 has, for example, a pair of engagement holes (not shown) formed on the base end side A2, for engaging with the tail portions 24 of the fixing arm 2. Thus, the fixing arm 2 is mounted to the clamp holding part 4. The fixing arm 2 and the clamp holding part 4 can be integrally formed.

[0090] The clamp holding part 4 has an inner diameter that is the same as or slightly shorter than the length L1 of the first connecting part 311 and the length L2 of the second connecting part 321. The clamp holding part 4 can internally accommodate the first connecting part 311 and the second connecting part 321. If the first movable arm 31 rotates downward B2 in the opening / closing direction B, the first connecting part 311 enters the interior of the clamp holding part 4 from the groove 41. Similarly, if the second movable arm 32 rotates upward B1 in the opening / closing direction B, the second connecting part 321 enters the interior of the clamp holding part 4 from the groove 41. The first movable arm 31 can be opened again relative to the fixed arm 2 until the first connecting part 311 is locked in the clamp holding part 4. Similarly, the second movable arm 32 can be opened again relative to the fixed arm 2 until the second connecting part 321 is locked in the clamp holding part 4.

[0091] With the first connecting portion 311 housed inside the clamp holding portion 4, if the first movable arm 31 rotates further downwards to the lower side B2 in the opening / closing direction B, the first connecting portion 311 will abut against the inner circumferential surface of the clamp holding portion 4, undergo elastic deformation, and be locked inside the clamp holding portion 4. Similarly, with the second connecting portion 321 housed inside the clamp holding portion 4, if the second movable arm 32 rotates further upwards to the upper side B1 in the opening / closing direction B, the second connecting portion 321 will abut against the inner circumferential surface of the clamp holding portion 4, undergo elastic deformation, and be locked inside the clamp holding portion 4. Thus, the first movable arm 31 and the second movable arm 32 are maintained in a closed state relative to the fixed arm 2. That is, the clamp holding portion 4 can lock the closed state of the first movable arm 31 and the second movable arm 32. It should be noted that the clamp holding portion 4 can lock either the first connecting portion 311 or the second connecting portion 321 first.

[0092] [Supply Unit 200]

[0093] The feeder 200 is the part of the clamping device 100 that, apart from the handling section 1, is not placed inside the cavity. For example... Figure 1 , Figures 8 to 12 As shown, the feeder 200 includes a traction component 5, an operating line 6, a sheath 7, and an operating section 8.

[0094] [Traction Component 5]

[0095] Figure 8 This is a diagram showing the traction member 5 of the feeder 200 of the clamping device 100.

[0096] like Figure 8 As shown, the traction member 5 includes a first traction member 51 and a second traction member 52. It should be noted that the first traction member 51 and the second traction member 52 have roughly the same structure, so the illustration of the second traction member 52 is omitted.

[0097] The first traction member 51 is positioned on the left side C1 relative to the connecting portion 20B of the fixed arm 2. The front end portion 51a of the first traction member 51 is connected to the base end side A2 of the first movable arm 31. Furthermore, the base end side A2 of the first traction member 51 is connected to the front end portion of the first operating line 61. The first traction member 51 has a first sliding pin hole 510 and a first sliding pin 511 at its front end portion 51a.

[0098] The first sliding pin hole 510 is a hole provided at the front end 51a of the first traction member 51. The first sliding pin hole 510 can engage with the first sliding pin 511. The first sliding pin hole 510 has a cutout 512 on the front end side A1.

[0099] The first sliding pin hole 511 connects the first sliding pin hole 510, the first sliding groove 310 of the first movable arm 31, and the engaging groove 23. By sliding the first sliding member 812 of the operating part 8 along the length direction A, the first sliding pin 511 can move forward and backward along the first sliding groove 310 and the engaging groove 23. If the first sliding pin 511 moves forward along the first sliding groove 310 and the engaging groove 23 towards the front end side A1, the first movable arm 31 will rotate around the first rotating pin 211 and open in the opening / closing direction, becoming open relative to the fixed arm 2. If the first sliding pin 511 retracts along the first sliding groove 310 and the engaging groove 23 towards the base end side A2, the first movable arm 31 will rotate around the first rotating pin 211 and close in the opening / closing direction, becoming closed relative to the fixed arm 2. Thus, the first movable arm 31 can open and close relative to the fixed arm 2 in the opening / closing direction B. Here, the closed state of the first movable arm 31 relative to the fixed arm 2 includes a state in which the distance between the front end of the first movable arm 31 and the front end of the fixed arm 2 is approximately zero. In this state, the first movable arm 31 and the fixed arm 2 clamp the living tissue to be disposed of between the first movable arm 31 and the fixed arm 2.

[0100] The second traction member 52 is positioned on the right side C2 relative to the connecting portion 20B of the fixed arm 2. The front end portion 52a of the second traction member 52 is connected to the base end side A2 of the second movable arm 32. Furthermore, the base end side A2 of the second traction member 52 is connected to the front end portion of the second operating line 62. The second traction member 52 has a second sliding pin hole 520 and a second sliding pin 521 at its front end portion 52a.

[0101] The second sliding pin hole 520 is a hole provided at the front end 52a of the second traction member 52, which can engage with the second sliding pin 521. The second sliding pin hole 520 has a cutout 522 on the front end side A1.

[0102] The second sliding pin hole 521 connects the second sliding pin hole 520, the second sliding groove 320 of the second movable arm 32, and the engaging groove 23. By sliding the second sliding member 822 of the operating part 8 along the length direction A, the second sliding pin 521 can move forward and backward along the second sliding groove 320 and the engaging groove 23. If the second sliding pin 521 moves forward along the second sliding groove 320 and the engaging groove 23 towards the front end side A1, the second movable arm 32 will rotate around the second rotating pin 221 and open in the opening / closing direction, becoming open relative to the fixed arm 2. If the second sliding pin 521 retracts along the second sliding groove 320 and the engaging groove 23 towards the base end side A2, the second movable arm 32 will rotate around the second rotating pin 221 and close in the opening / closing direction, becoming closed relative to the fixed arm 2. Thus, the second movable arm 32 can open and close relative to the fixed arm 2 in the opening / closing direction B. Here, the closed state of the second movable arm 32 relative to the fixed arm 2 includes a state in which the distance between the front end of the second movable arm 32 and the front end of the fixed arm 2 is approximately zero. In this state, the living tissue to be disposed of is clamped between the front end of the second movable arm 32 and the front end of the fixed arm 2.

[0103] With the first movable arm 31 closed relative to the fixed arm 2 and the first engagement portion 311 locked inside the clamp holding portion 4, the first slider 812 of the operating portion 8 slides further toward the base end side A2. If this occurs, the cut portion 512 will deform or break, and the first sliding pin 511 will disengage. The first traction member 51 will separate from the connected fixed arm 2 and the first movable arm 31. Furthermore, with the second movable arm 32 closed relative to the fixed arm 2 and the second engagement portion 321 locked inside the clamp holding portion 4, the second slider 822 of the operating portion 8 slides further toward the base end side A2. If this occurs, the cut portion 522 will deform or break, and the second sliding pin 521 will disengage. The second traction member 52 will separate from the connected fixed arm 2 and the second movable arm 32. If the first traction member 51 and the second traction member 52 separate from the fixed arm 2, the first movable arm 31 and the second movable arm 32, the clamping device 100 can leave the treatment part 1, which has the fixed arm 2, the movable arm 3 and the clamp holding part 4, in the cavity in a state of clamping tissue.

[0104] [Operation Line (Line) 6]

[0105] like Figure 8 As shown, the operating line (line) 6 has a first operating line 61 and a second operating line 62. The first operating line 61 and the second operating line 62 have approximately the same structure, therefore the illustration of the second operating line 62 is omitted.

[0106] The front end of the first operating line 61 is connected to the base end of the first traction member 51. The base end of the first operating line 61 is fixed to the first sliding member 812 of the operating part 8. The first operating line 61 penetrates into the sheath 7 and can move forward and backward within the sheath 7. The first operating line 61 is, for example, a single wire or stranded wire made of metal. In addition, the outer peripheral surface of the first operating line 61 can be covered with a non-conductive material or the like. The first operating line 61 is fixed to the first traction member 51 by various known methods, such as by bonding or welding. By sliding the first sliding member 812 mounted on the base end of the operating part 8, the first operating line 61 can cause the first traction member 51 to move forward or backward.

[0107] The front end of the second operating line 62 is connected to the base end of the second traction member 52. The base end of the second operating line 62 is fixed to the second sliding member 822 of the operating part 8. The second operating line 62 passes through the interior of the sheath 7 and can move forward and backward within the sheath 7. The second operating line 62 is, for example, a single wire or stranded wire made of metal. In addition, the outer peripheral surface of the second operating line 62 can be covered with a non-conductive material or the like. The second operating line 62 is fixed to the second traction member 52 by various known methods, such as by bonding or welding. By sliding the second sliding member 822 mounted on the base end of the operating part 8, the second operating line 62 can cause the second traction member 52 to move forward or backward.

[0108] [Sheath 7]

[0109] For example Figure 1 As shown, the sheath 7 extends along the length direction A and is a long strip member that can be inserted into the lumen. The sheath 7 is formed of an insulating material, such as a fluoropolymer like PTFE (polytetrafluoroethylene) or a resin material like HDPE (high-density polyethylene). The sheath 7 is flexible and can easily change shape within the lumen, following the contours of the lumen, and can be inserted into or removed from the channel of the clamping device 100 (not shown). The base end 7b of the sheath 7 is connected to the operating part 8, and the front end 7a is connected to the base end side A2 of the clamp holding part 4. In addition, the sheath 7 can be traversed by the first operating line 61 and the second operating line 62.

[0110] [Operations Section 8]

[0111] Figure 9 This is a diagram showing the operation section 8 of the feeder 200 of the clamping device 100. Figure 10 This is a diagram of the operating section 8 of the feeder 200 of the clamping device 100 as viewed from the upper side B1 (or the lower side B2) in the vertical direction B.

[0112] like Figure 1 , Figures 9 to 10As shown, the operation unit 8 includes a front end portion 80a, a first operation unit 81, and a second operation unit 82, extending in the length direction A. Figure 9 As shown, the front end portion 80a is connected to the base end portion 7b of the sheath 7. In this embodiment, the first operating portion 81 and the second operating portion 82, which are connected to the front end portion 80a in the operating portion 8, branch off from each other from the front end portion 80a, and the separation direction is approximately in the same direction as the opening and closing direction B. The first operating portion 81 and the second operating portion 82 extend from the front end portion 80a toward the base end side A2 to the upper side B1 and the lower side B2 in the upward and downward direction B.

[0113] like Figure 9 and Figure 10 As shown, the first operating part 81 has a first operating part body (handle) 811, a first sliding member 812 and a finger rest part 813.

[0114] The first operating part body (handle) 811 operates the first traction member 51 and the first movable arm 31 via the first operating line 61. The first operating part body 811 of the first operating part 81 is formed to extend along the length direction A into a generally cylindrical shape. Figure 10 As shown, the main body 811 of the first operating part has a first outer surface 814 and a first sliding groove 815.

[0115] The first outer surface 814 is the surface of the first operating part body 811 that is exposed to the outside. The first outer surface 814 has a first left surface 814a located on the left side C1 in the left-right direction and a first right surface 814b located on the right side C2. The first left surface 814a and the first right surface 814b have rounded shapes.

[0116] like Figure 10 As shown, the first sliding groove 815 is a groove formed along the length direction A on the upper side B1 of the first operating part body 811. The first sliding groove 815 has a first sliding surface 815a on the surface of the first sliding groove 815 on the upper side B1, and the first sliding groove 815 extends from the front end portion 80a of the operating part 8 to the vicinity of the front end side A1 of the finger-attaching portion 813 of the first operating part 81. The length of the first sliding groove 815 in the length direction A is longer than the length of the first sliding member 812 and the stop member 300, which will be described later and installed on the first operating part body 811, when arranged along the length direction A.

[0117] like Figure 9 and Figure 10As shown, the first sliding member 812 is a generally hollow cylinder and is fitted into the first operating part body 811. The length A of the first sliding member 812 is shorter than that of the first operating part body 811. Furthermore, a portion of the first sliding member 812 is engaged with the first sliding groove 815 and slides on the first sliding surface 815a. Therefore, the first sliding member 812 can slide relative to the first operating part body 811 along the length A. That is, the first operating part body 811 supports the first sliding member 812 slidably. The base end of the first operating line 61 is fixed to the first sliding member 812. If the first sliding member 812 is slid along the first operating part body 811 and moves forward and backward along the length A, the first operating line 61 and the first traction member 51 fixed to the front end of the first operating line 61 will move forward and backward along the length A. Furthermore, if the first traction member 51 moves forward and backward along the length A, the first sliding pin 511 provided on the first traction member 51 will move forward and backward along the first sliding groove 310. Therefore, the first movable arm 31 opens in the opening / closing direction B, centered on the first rotating pin 211. According to this configuration, if the first sliding member 812 moves forward or backward along the length direction A of the first operating part body 811, the first movable arm 31 will open and close in the opening / closing direction B. It should be noted that the interior of the first sliding member 812 does not need to slide on the first sliding surface 815a of the first sliding groove 815. The first sliding member 812 only needs to be able to slide relative to the first operating part body 811.

[0118] like Figure 9 and Figure 10 As shown, the finger rest 813 is a generally annular portion formed on the base side A2 of the first operating part body 811 for resting the finger.

[0119] like Figure 9 As shown, the second operating unit 82 includes a second operating unit body (handle) 821, a second sliding member 822, and a finger rest 823. It should be noted that, as... Figure 10 As shown, when the operating part 8 of the clamping device 100 is viewed from the lower side B2 in the vertical direction B, if the left side C1 and the right side C2 in the horizontal direction C are reversed, the second operating part 82 has a structure that is approximately the same as the first operating part 81.

[0120] The second operating part body (handle) 821 operates the second traction member 52 and the second movable arm 32 via the second operating line 62. The second operating part body 821 of the second operating part 82 extends along the length direction A into a generally cylindrical shape. Figure 10 As shown, the second operating part body 821 has a second outer surface 824 and a second sliding groove 825.

[0121] The second outer surface 824 is the surface of the second operating part body 821 that is exposed to the outside. The second outer surface 824 has a second right surface 824a located on the right side C2 in the left-right direction and a second left surface 824b located on the left side C1. The second right surface 824a and the second left surface 824b have rounded shapes.

[0122] like Figure 10 As shown, the second sliding groove 825 is a groove formed along the length direction A on the lower side B2 of the vertical direction B of the second operating part body 821. The surface of the second sliding groove 825 on the lower side B2 has a second sliding surface 825b, and the second sliding groove 825 extends from the front end portion 80a of the operating part 8 to the vicinity of the front end side A1 of the finger-attaching portion 823 of the second operating part 82.

[0123] like Figure 9 and Figure 10 As shown, the second slider 822 is a generally hollow cylinder and is fitted into the second operating part body 821. The length of the second slider 822 in the longitudinal direction A is shorter than that of the second operating part body 821. Furthermore, a portion of the second slider 822 engages with the second sliding groove 825 and slides on the second sliding surface 825a. Therefore, the second slider 822 can slide relative to the second operating part body 821 in the longitudinal direction A. That is, the second operating part body 821 supports the second slider 822 slidably. The base end of the second operating line 62 is fixed to the second slider 822. If the second slider 822 is slid along the second operating part body 821 and moves forward and backward in the longitudinal direction A, the second operating line 62 and the second traction member 52 fixed to the front end of the second operating line 62 will move forward and backward in the longitudinal direction A. Furthermore, if the second traction member 52 moves forward and backward in the longitudinal direction A, the second sliding pin 521 provided on the second traction member 52 will move forward and backward along the second sliding groove 320. Therefore, the second movable arm 32 opens in the opening / closing direction B, centered on the second rotating pin 221. According to this configuration, if the second slider 822 moves forward or backward along the length direction A of the second operating part body 821, the second movable arm 32 will open and close in the opening / closing direction B. It should be noted that the interior of the second slider 822 does not need to slide on the second sliding surface 825a of the second sliding groove 825. The second slider 822 only needs to be able to slide relative to the second operating part body 821.

[0124] like Figure 9 and Figure 10 As shown, the finger rest 823 is a generally annular portion formed on the base side A2 of the second operation part body 821 for resting the finger.

[0125] [Stop 300]

[0126] Figure 11This is a diagram showing the stop 300 of the clamping device 100. Figure 12 This is a cross-sectional view showing the operating part 8 of the feeder 200 and the stop member 300 of the clamping device 100.

[0127] like Figure 9 and Figure 10 As shown, a stop 300 is installed on the first operating part body 811 of the clamping device 100 to restrict the sliding of the first sliding member 812. The stop 300 is positioned at the front end side A1 relative to the first sliding member 812 in the longitudinal direction A. The stop 300 can be installed and removed from any position on the first operating part body 811. Furthermore, the stop 300 can be engaged at any position on the first sliding groove 815 of the first operating part body 811. The stop 300 can be installed in a manner that covers a portion of the first sliding groove 815. Figure 11 and Figure 12 As shown, the stop member 300 includes a base 301, a first outer wall portion 302, a second outer wall portion 303, a middle wall portion 304, a first slit portion 305, and a second slit portion 306.

[0128] like Figure 11 and Figure 12 As shown, the base 301 is a generally plate-shaped component disposed on the upper side B1 in the vertical direction B. The length of the base 301 in the longitudinal direction A is shorter than the first sliding groove 815 of the first operating part body 811. The length of the base 301 in the lateral direction C is longer than the outer diameter of the first operating part body 811 in the lateral direction C. Although the length of the base 301 in the vertical direction B is not particularly limited, it can be longer than the surgeon's finger so that the surgeon can easily grasp the base 301 to install the stop 300 onto the first operating part body 811.

[0129] like Figure 11 and Figure 12 As shown, the first outer wall portion 302 extends downward from the base portion 301 along the vertical direction B towards the lower side B2. The first outer wall portion 302 is provided on the left side C1 of the stop member 300. The first outer wall portion 302 has a side surface 302a on the right side C2. The side surface 302a is formed to match the shape of the first left surface 814a of the first operating part body 811, as shown. Figure 12 As shown, it abuts against the first left surface 814a.

[0130] like Figure 11 and Figure 12 As shown, the second outer wall portion 303 extends downward from the base portion 301 towards the lower side B2 along the vertical direction B. The second outer wall portion 303 is provided on the right side C2 of the stop member 300. The second outer wall portion 303 has a side surface 303a on the left side C1. The side surface 303a is formed to match the shape of the first right surface 814b of the first operating part body 811, as shown. Figure 12As shown, it abuts against the first right surface 814b.

[0131] like Figure 11 and Figure 12 As shown, the middle wall portion 304 extends downward from the base portion 301 along the vertical direction B and is disposed between the first outer wall portion 302 and the second outer wall portion 303. The middle wall portion 304 has a shape that is substantially the same as the first sliding surface 815a of the first sliding groove 815 and can be inserted into the first sliding groove 815.

[0132] like Figure 11 and Figure 12 As shown, the first slit portion 305 is provided on the lower side B2 of the stop member 300 and is a groove formed between the first outer wall portion 302 and the middle wall portion 304. The first slit portion 305 is disposed on the left side C1 of the stop member 300.

[0133] like Figure 11 and Figure 12 As shown, the second slit portion 306 is provided on the lower side B2 of the stop member 300 and is a groove formed between the second outer wall portion 303 and the middle wall portion 304. The second slit portion 306 is disposed on the right side C2 of the stop member 300.

[0134] like Figure 12 As shown, the stop 300 is installed on the first operating part body 811 of the first operating part 81 from the upper side B1 in the vertical direction B. Specifically, the stop 300 inserts the middle wall portion 304 into the first sliding groove 815 of the first operating part body 811. At this time, the portion of the first operating part body 811 other than the first sliding groove 815 enters the first slit portion 305 and the second slit portion 306. Thus, the side surface 302a of the first outer wall portion 302 abuts against the first left surface 814a of the first operating part body 811. Furthermore, the side surface 303a of the second outer wall portion 303 abuts against the first right surface 814b of the first operating part body 811. That is, the stop 300 is installed by clamping a part of the first operating part body 811 with the first outer wall portion 302 and the second outer wall portion 303. According to the above structure, the stop 300 is installed on the first operating part body 811 of the first operating part 8.

[0135] Furthermore, the stop 300 can be installed and removed from any position on the first operating part body 811. The surgeon abuts the stop 300 against the front end side A1 of the first slider 812 and locks it in place. Thus, the stop restricts the sliding of the first slider 812 toward the front end side A1. At this time, the sliding of the first slider 812 toward the base end side A2 is not restricted. Therefore, the stop 300 allows the first slider 812 to slide toward the base end side A2.

[0136] After the surgeon installs the stop 300 onto the first operating part body 811, the surgeon can also remove it from the first operating part body 811. Therefore, the stop 300 can release the sliding restriction of the first slider 812 toward the front end side A1.

[0137] Here, the stop 300 is not limited to this embodiment; for example, it may also be installed on the second operating part body 821 of the clamping device 100. Furthermore, the slider 300 may be installed on both the first operating part body 811 and the second operating part body 821. Additionally, the material of the stop 300 is not particularly limited. For example, elastic members such as rubber or resin capable of elastic deformation can be used, or it may be made of metal. Furthermore, the base 301 of the stop 300 can be shaped to be easily grasped by the surgeon and easily installed onto the first operating part body 811.

[0138] [Operation and function of clamping device 100]

[0139] Below, refer to Figures 13 to 20 The operation and function of the clamping device 100 will be explained. In this embodiment, as an example of how to use the clamping device 100, the procedure of ligating a wound in internal tissue will be described.

[0140] Figure 13 This diagram schematically shows the state in which the first movable arm 31 of the handling section 1 of the clamping device 100 is opened, so that the handling section 1 approaches the first part Ta of the tissue to be clamped, and the state of the operating section 8 at this time. Figure 14 This diagram schematically shows the state in which the first movable arm 31 of the closing clamping device 100 handling unit 1 clamps the first part Ta of the tissue and the state of the operating unit 8 at this time. Figure 15 The diagram schematically shows the state in which the first movable arm 31 of the handling section 1 of the closed clamping device 100 clamps the first part Ta of the tissue and the state in which the stop 300 is installed on the first operating section 81 at this time. Figure 16 This diagram schematically shows the state in which the first movable arm 31 of the handling section 1 of the clamping device 100 clamps the first part Ta of the tissue, while the second movable arm 32 is opened, so that the handling section 1 moves closer to the second part Tb of the tissue to be clamped, and the state of the operating section 8 and the stop member 300 at this time. Figure 17 This diagram schematically shows the state in which the second movable arm 32 of the handling section 1 of the closed clamping device 100 clamps the second part Tb of the tissue, and the state of the operating section 8 and the stop member 300 at this time. Figure 18This diagram schematically illustrates the state of the first operating unit 8 at which the second movable arm 32 of the clamping device 100 clamps the second part Tb of the tissue, while the stop 300 installed on the first operating unit 81 is removed, the first movable arm 31 of the treatment unit 1 is opened again, and the treatment unit 1 is brought close to the third part Tc, which is different from the first part of the tissue. Figure 19 The diagram schematically shows the state in which the first movable arm 31 of the handling section 1 of the closed clamping device 100 clamps the third part Tc of the tissue and the state in which the stop 300 is installed on the first operating section 81 at this time. Figure 20 This diagram schematically shows the state in which the treatment section 1 of the clamping device 100 holds the tissue, the state in which the treatment section 1 is held by the clamping device 100, and the state of the operation section 8 and the stop member 300 at this time.

[0141] (Prepare)

[0142] As a preparatory step, the surgeon (not shown) identifies wounds in the internal tissues using known methods. Specifically, the surgeon inserts the insertion part of an endoscope (not shown) into the digestive tract, such as the esophagus, stomach, duodenum, or large intestine, through a natural opening in the lumen (e.g., the patient's mouth), and while observing images obtained through the imaging part of the endoscope, identifies cavitation-like defects T in the tissue D within the lumen to be treated.

[0143] (Insert step)

[0144] The surgeon inserts the clamping device 100 into the endoscope channel, causing the clamping device 100 to protrude from the front opening of the endoscope channel. The surgeon then moves the treatment section 1, located on the front side A1 of the clamping device 100, to the vicinity of the defect T.

[0145] (Configuration Steps)

[0146] like Figure 13 As shown, the surgeon observes the image while opening and closing the first movable arm 31, which is close to the first part Ta of the defect T to be treated. More specifically, the surgeon slides the first slider 812 toward the front end A1 in the length direction A. This causes the first traction member 51 to move toward the front end A1. As the first sliding pin 511 connected to the first traction member 51 advances, the first movable arm 31 rotates about the first rotating pin 211 as its center of rotation. The first movable arm 31 rotates toward the upper side B1 in the opening / closing direction B, causing the first arm portion 312 at the front end A1 to separate from the fixed arm 2. As a result, the first movable arm 31 is in an open state relative to the fixed arm 2, capable of clamping the first part Ta of the defect T to be treated.

[0147] In this state, the surgeon moves the first movable arm 31 and the fixed arm 2, which are in the open state, toward the first part Ta of the defect T to be clamped, so that the first part Ta is located between the first movable arm 31 and the fixed arm 2.

[0148] (Clamping steps)

[0149] exist Figure 14 During the procedure, after confirming that the first part Ta of the defect T is located between the first movable arm 31 and the fixed arm 2, the surgeon slides the first sliding member 812 of the first operating part 81 towards the base end side A2, thereby moving the first traction member 51 towards the base end side A2. Consequently, if the first sliding pin 511 connected to the first traction member 51 retracts, the first arm portion 312 of the first movable arm 31 rotates towards the fixed arm 2 in the opening / closing direction B, downwards at B2. As a result, the first movable arm 31 is in a closed state relative to the fixed arm 2, clamping the first part Ta of the defect T, which is the object of treatment.

[0150] As the surgeon pulls the first sliding member 812 toward the base end side A2, the first engaging portion 311 formed on the base end side A2 of the first movable arm 31 also rotates in the opening / closing direction B with the first rotating pin 211 as the center of rotation. As a result, the first engaging portion 311 enters the groove 41 formed in the clamp holding portion 4 and is received inside the clamp holding portion 4. Thus, the first part Ta of the defect T is clamped by the first movable arm 31 and the fixed arm 2.

[0151] (Steps for limiting the sliding of sliders)

[0152] exist Figure 15 In the procedure, with the first portion Ta of defect T clamped by the first movable arm 31 and the fixed arm 2, the surgeon installs a stop 300 onto the first operating part body 811. That is, the stop 300 sets a locking position relative to the first operating part body 811. The stop 300 is installed on the front end side A1, relative to the first sliding member 812 provided on the first operating part body 811. The surgeon slides the stop 300 toward the base end side A2, so that it abuts against the front end side A1 of the first sliding member 812. The stop 300 abuts against the front end side A1 of the first sliding member 812 and is locked onto the first operating part body 811. Thus, the stop 300 can restrict the sliding of the first sliding member 812 toward the front end side A1. Furthermore, the stop 300 can fix the relative position of the first movable arm 31 and the fixed arm 2, maintaining the state of clamping the first portion Ta of defect T. Here, the sliding of the first sliding member 812 toward the base end side A2 is not restricted. Therefore, the stop 300 allows the first slider 812 to slide toward the base end side A2.

[0153] (Traction Steps)

[0154] exist Figure 16 During the procedure, the surgeon maintains the first portion Ta of the defect T held in place by the stop 300, while simultaneously moving the treatment unit 1 to the vicinity of the second portion Tb of the defect T, which is the object to be ligated. The second portion Tb of the defect T is different from the first portion Ta of the defect T. Throughout this process, the stop 300 maintains the first movable arm 31 and the fixed arm 2 in a closed state.

[0155] (Configuration Steps)

[0156] If the surgeon confirms that the treatment unit 1 has reached the vicinity of the second part Tb of the defect T, the opening and closing mechanism moves closer to the second part Tb of the defect T to be treated. More specifically, the surgeon slides the second slider 822 toward the front end A1. The second traction member 52 then moves toward the front end A1. If the second sliding pin 521, connected to the second traction member 52, advances, the second movable arm 32 rotates about the second rotating pin 221 as its rotation center. The second movable arm 32 rotates toward the lower side B2 in the opening / closing direction B, causing the second arm portion 322 at the front end A1 to separate from the fixed arm 2. As a result, the second movable arm 32 is in a closed state relative to the fixed arm, capable of clamping the second part Tb of the defect T to be treated.

[0157] In this state, the surgeon moves the second movable arm 32 and the fixed arm 2, which are in the open state, toward the second part Tb of the defect T to be clamped, so that the second part Tb of the defect T is located between the second movable arm 32 and the fixed arm 2.

[0158] (Clamping steps)

[0159] like Figure 17 As shown, after the surgeon confirms that the second part Tb of the defect T is located between the second movable arm 32 and the fixed arm 2, the surgeon moves the second traction member 52 toward the base end A2 by sliding the second sliding member 822 of the second operating part 82 toward the base end A2. Consequently, if the second sliding pin 521 connected to the second traction member 52 retracts, the second arm portion 322 of the second movable arm 32 rotates toward the fixed arm 2 in the opening / closing direction B, upward to the upper side B1. As a result, the second movable arm 31 is closed relative to the fixed arm 2, clamping the second part Tb of the defect T, which is the object of treatment.

[0160] As the surgeon pulls the second slider 822 toward the base end A2, the second engagement portion 321 formed on the base end A2 of the second movable arm 32 also rotates in the opening / closing direction B with the second rotating pin 221 as the rotation center. As a result, the second engagement portion 321 enters the groove 41 formed in the clamp holding portion 4 and is received inside the clamp holding portion 4. Thus, the second part Tb of the defect T is clamped by the second movable arm 32 and the fixed arm 2.

[0161] (Steps to limit the sliding of the slider)

[0162] exist Figure 18 During the procedure, the surgeon can remove the stop 300 mounted on the first operating part body 811 from the first operating part body 811. If the stop 300 is removed, it releases the sliding of the first sliding member 812 towards the front end A1. Therefore, the surgeon can slide the first sliding member 812 towards the front end A1 again. When the first sliding member 812 slides towards the front end A1, the first movable arm rotates upwards towards the upper side B1 in the opening / closing direction B, causing the first movable arm 31 to disengage from the fixed arm 2. The surgeon then transitions the first movable arm 31 to an open state relative to the fixed arm 2, releasing the clamping of the first portion Ta of the defect T. Next, the surgeon moves the first movable arm 31 closer to a third portion Tc, which is different from the first portion Ta of the defect T. The surgeon slides the first sliding member 812 towards the front end A1 in the length direction A. Thus, the first movable arm 31 becomes open relative to the fixed arm 2, clamping the third portion Tc of the defect T. The surgeon slides the first slider 812 of the first operating part 81 towards the base end A2, causing the first movable arm 31 to close relative to the fixed arm 2, thus clamping the third portion Tc of the defect T to be treated. It should be noted that this step does not necessarily have to be performed after the second movable arm 32 and the fixed arm 2 have clamped the second portion Tb of the defect T. That is, as... Figure 15 and Figure 16 As shown, with the first portion Ta of defect T clamped by the first movable arm 31 and the fixed arm 2, the surgeon can remove the stop 300 mounted on the first operating part body 811 from the first operating part body 811. In this case, as described above, the surgeon transitions the first movable arm 31 to an open state relative to the fixed arm 2, thereby releasing the clamping of the first portion Ta of defect T. Next, by sliding the first slider 812 of the first operating part 81 toward the base end side A2, the surgeon closes the first movable arm 31 relative to the fixed arm 2, and can clamp the third portion Tc of defect T, which is the object of treatment.

[0163] (Steps to limit the sliding of the slider)

[0164] exist Figure 19In the process of clamping the third portion Tc of defect T by the first movable arm 31 and the fixed arm 2, the surgeon again installs the stop 300 onto the first operating part body 811. The stop 300 is mounted on the front end side A1, relative to the first sliding member 812 provided on the first operating part body 811. The surgeon slides the stop 300 toward the base end side A2, so that it abuts against the front end side A1 of the first sliding member 812. The stop 300 abuts against the front end side A1 of the first sliding member 812 and is locked in place on the first operating part body 811. Thus, the stop 300 can restrict the sliding of the first sliding member 812 toward the front end side A1. Furthermore, the stop 300 can maintain the state in which the third portion Tc of defect T is clamped by the first movable arm 31 and the fixed arm 2. Here, the sliding of the first sliding member 812 toward the base end side A2 is not restricted. Therefore, the stop 300 allows the first sliding member 812 to slide toward the base end side A2.

[0165] Then, if the first slider 812 of the operating part 8 slides further toward the base end side A2 in the length direction A, the clamp holding part 4 causes the first engaging part 311 of the first movable arm 31 to lock inside the clamp holding part 4, thus locking the first movable arm 31 so that it cannot be opened. That is, in the preset locking position, the base end (first engaging part 311) of the first movable arm 31 is locked in the clamp holding part 4. Furthermore, if the second slider 822 of the operating part 8 slides further toward the base end side A2 in the length direction A, the clamp holding part 4 causes the second engaging part 321 of the second movable arm 32 to lock inside the clamp holding part 4, thus locking the second movable arm 32 so that it cannot be opened. That is, in the preset locking position, the base end (second engaging part 321) of the second movable arm 32 is locked in the clamp holding part 4.

[0166] It should be noted that the locking position is located further forward on the front side A1 compared to the locking position.

[0167] (Connection termination and retention steps)

[0168] Through the above measures, such as Figure 19As shown, the second part Tb and the third part Tc of the defect T, which are the objects of treatment, are clamped by the treatment unit 1. In this state, if the surgeon slides the first slider 812 of the first operating unit 81 and the second slider 822 of the second operating unit 82 further toward the base end side A2, the first traction member 51 and the second traction member 52 move toward the base end side A2. The first traction member 51 and the second traction member 52 are detachably connected to the first sliding pin 511 and the second sliding pin 521, respectively. For example, by pulling the first traction member 51 toward the base end side A2, the incision portion 512 of the first traction member 51 deforms or breaks, and the first sliding pin 511 is pulled out from the first sliding pin hole 510, thereby releasing the connection. That is, if the first slider 812 slides toward the base end side A2 and passes the locking position to reach the preset retention position, the first traction member 51 deforms or breaks, releasing the connection between the treatment unit 1 and the supply device 200. Furthermore, by pulling the second traction member 52 toward the base end side A2, the cut portion 522 of the second traction member 52 deforms or breaks, and the second sliding pin 521 is pulled out from the second sliding pin hole 520, thereby disengaging the connection. That is, if the second sliding member 822 slides toward the base end side A2 and passes the locking position to reach the preset holding position, the second traction member 52 deforms or breaks, releasing the connection between the disposal unit 1 and the feeder 200. It should be noted that the specific structure in which the first traction member 51 and the second traction member 52, the first sliding pin 511, and the second sliding pin 521 engage is not limited to this embodiment.

[0169] like Figure 20 As shown, if the surgeon applies a force exceeding a predetermined value to move the first traction member 51 and the second traction member 52 toward the base side A2, as previously described, the connection between the first traction member 51 and the second traction member 52 and the first sliding pin 511 and the second sliding pin 521 will be released. At this time, the supply unit 200, which includes the traction member 5, the operating line 6, the sheath 7, and the operating part 8, and the stop member 300 installed on the operating part 8, are disconnected from the treatment unit 1, which includes the fixed arm 2, the movable arm 3, and the clamp holding part 4. Thus, with the first movable arm 31 and the fixed arm 2 clamping the third part Tc of the defect T and the second movable arm 32 and the fixed arm 2 clamping the second part Tb of the defect T, the treatment unit 1 is left inside the lumen (body).

[0170] It should be noted that, Figure 18 The steps for releasing the sliding limit of the slider shown are as follows: Figure 19 The step of releasing the sliding restriction shown is not mandatory. That is, in Figure 17 In the clamping steps shown, with the movable arm 3 and the fixed arm 2 clamping the first part Ta and the second part Tb of the defect T, as follows: Figure 20As shown, the treatment unit 1 can be placed inside the cavity.

[0171] Then, the surgeon operates the operating part 8 of the clamping device 100 to pull the sheath 7 out of the patient's body. Through the above steps, the surgeon completes the treatment of the patient.

[0172] In this embodiment, by means of the above features, the treatment section 1 of the clamping device 100 is able to close the defect T of the tissue D that is the object of treatment.

[0173] Furthermore, in this embodiment, the stop 300 can lock the first engaging portion 311 of the first movable arm 31 inside the clamp holding portion 4, and even without locking, it can restrict the sliding of the first sliding member 812 toward the front end side A1. Further, the stop 300 can fix the relative position of the first movable arm 31 and the fixed arm 2, maintaining the state of clamping the first portion Ta of the defect T. Therefore, the surgeon can operate the second sliding member 822 of the second operating portion 82 without suppressing the sliding of the first sliding member 812 of the first operating portion 81 toward the front end side A1. Therefore, the operation of the clamping device 100 becomes easier, and the time required for surgery can be shortened.

[0174] Furthermore, in this embodiment, the stop 300 does not restrict the sliding of the first slider 812 toward the base side A2. The stop 300 allows the first slider 812 to slide toward the base side A2. Therefore, even if the force used to hold the tissue by the first movable arm 31 and the fixed arm 2 is insufficient, the surgeon can slide the first slider 812 toward the base side A2 to hold the tissue with greater force. Thus, it is possible to prevent the tissue from slipping off the arm.

[0175] Furthermore, in this embodiment, the surgeon can remove the stop 300, which is installed on the first operating part body 811, from the first operating part body 811. Therefore, the surgeon can repeatedly change the position of the stop 300. In addition, the surgeon can release the sliding restriction of the first slider 812 toward the front end side A1.

[0176] Furthermore, in this embodiment, the surgeon releases the sliding restriction of the first slider 812 toward the front end A1 by disassembling the stop 300, allowing the first slider 812 to slide toward the front end A1 again. The surgeon can then transition the first movable arm 31 to an open state relative to the fixed arm 2, thereby releasing the state in which the first part Ta of the defect T is clamped. Therefore, the surgeon can easily change the position of the defect T clamped by the treatment unit 1. In addition, the possibility that the surgeon cannot change the position of the clamped tissue after locking the movable arm 3 is reduced.

[0177] The first embodiment of the present invention has been described in detail above with reference to the accompanying drawings. However, the specific features are not limited to this embodiment, and design changes that do not depart from the spirit of the present invention are also included in the present invention. In addition, the feature elements in the above embodiment and the following variations can be appropriately combined.

[0178] (Second Implementation)

[0179] The following is for reference Figures 21 to 24 The second embodiment of the present invention will be described. In the following description, the same reference numerals are used for structures that are common to the structures already described, and repeated descriptions are omitted. It should be noted that, compared with the first embodiment, the following embodiments differ in the operating part and the stop member of the feeder. Therefore, the following description will focus on the differences from the first embodiment. Figure 21 This is a diagram of the operation section 8A of the feeder 200A of the clamping device 100A according to the second embodiment of the present invention, viewed from the top side B1 in the vertical direction B. Figure 22 This is a perspective view showing the stop 300A of the clamping device 100A. Figure 23 This is a cross-sectional view showing the stop 300A of the clamping device 100A. Figure 24 This is a perspective view showing the operating part 8A and the stop member 300A of the clamping device 100A.

[0180] The clamping device 100A according to the second embodiment of the present invention includes a handling section (clamp) 1, a feeder 200A, and a stop member 300A. Furthermore, the feeder 200A includes a traction member 5, an operating line 6, a sheath 7, and an operating section 8A. Here, the handling section 1, traction member 5, operating line 6, and sheath 7 are the same as in the first embodiment, so descriptions and illustrations are omitted.

[0181] The operation unit 8A includes a front end portion 80a, a first operation portion 81A, and a second operation portion 82. The front end portion 80a and the second operation portion 82 are the same as in the first embodiment, so description and illustrations are omitted. Figure 21 As shown, the first operating unit 81A includes a first operating unit body (handle) 811A, a first slider 812, and a finger rest 813. The first slider 812 and the finger rest 813 are the same as in the first embodiment, so descriptions and illustrations of the first slider 812 and the finger rest 813 are omitted.

[0182] like Figure 21 As shown, the first operating part body (handle) 811A has a first outer surface 814A and a first sliding groove 815. The first sliding groove 815 is the same as in the first embodiment, so the description and illustration are omitted.

[0183] like Figure 21As shown, the first outer surface 814A, in addition to having the features of the first outer surface 814 of the first embodiment, also has a protruding thread portion 814s.

[0184] A protruding thread portion 814s is provided along the length direction A on the first outer surface 814A.

[0185] like Figure 22 and Figure 23 As shown, a stop member 300A is provided on the first operating part body 811A. The stop member 300A is generally hollow cylindrical. The stop member 300A is provided on the front end side A1 compared to the first sliding member 812 provided on the first operating part body 811A. The stop member 300A has a through hole 307 and an inner peripheral surface 308.

[0186] A through hole 307 is formed inside the stop 300A. The stop 300A is mounted on the first operating part body 811A by passing through the through hole 307.

[0187] like Figure 22 and Figure 23 As shown, an inner peripheral surface 308 is formed inside the stop member 300A. The inner peripheral surface 308 is the surface opposite to the first operating part body 811A that passes through the through hole 307. The inner peripheral surface 308 has a concave thread portion 308s. The concave thread portion 308s is formed such that if the stop member 300A rotates about the central axis R along the length direction A, the stop member 300A can move in the length direction A. The concave thread portion 308s engages with a convex thread portion 814s provided on the first outer surface 814A of the first operating part body 811A.

[0188] For example, if the stop 300A rotates in the first direction R1 of the central axis R, the concave thread 308s and the convex thread 814s engage, causing the stop 300A to move towards the base end side A2 in the length direction A. Furthermore, if the stop 300A rotates in the second direction R2 of the central axis R, the concave thread 308s and the convex thread 814s engage, causing the stop 300A to move towards the front end side A1 in the length direction A.

[0189] Next, refer to Figure 24 The operation and function of the stop 300A of the clamping device 100A in the second embodiment will be explained. In this embodiment, the treatment of the wound from which the internal tissue is ligated is the same as in the first embodiment, so the explanation is omitted.

[0190] like Figure 24As shown, compared to the first sliding member 812, the stop member 300A is provided on the front end side A1 of the first operating part body 811A. Furthermore, the concave thread portion 308s of the stop member 300A engages with the convex thread portion 814s of the first operating part body 811A that passes through the through hole 307. Therefore, if the surgeon rotates the stop member 300A in the first direction R1 along the central axis R, the stop member 300A will move towards the base end side A2 in the length direction A. The surgeon moves the stop member 300A towards the base end side A2, causing it to abut against the front end side A1 of the first sliding member 812. The stop member 300A abuts against the front end side A1 of the first sliding member 812 and is locked in place on the first operating part body 811A. Thus, the stop member 300A can restrict the sliding of the first sliding member 812 towards the front end side A1. Furthermore, the stop 300A can maintain the state in which the relative positions of the first movable arm 31 and the fixed arm 2 are fixed. Here, the sliding of the first slider 812 toward the base end side A2 is not restricted. Therefore, the stop 300A can allow the first slider 812 to slide toward the base end side A2.

[0191] Furthermore, if the surgeon rotates the stop 300A in the second direction R2 along the central axis R, the stop 300A will move towards the front end A1 in the length direction A. Thus, the stop 300A can release the restriction on the sliding of the first slider 812 towards the front end A1. The surgeon can then slide the first slider 812 towards the front end A1 again. If the first slider 812 is slid towards the front end A1, the first movable arm 31 will rotate towards the upper side B1 in the opening / closing direction B, thereby separating from the fixed arm. Thus, the surgeon can transition the first movable arm 31 to an open state relative to the fixed arm 2. It should be noted that the first direction R1 and the second direction R2, which are rotation directions, are not particularly limited, and the rotation directions of the first direction R1 and the second direction R2 can be opposite to those in this embodiment.

[0192] In this embodiment, a stop 300A is provided in the first operating part body 811A. Therefore, the surgeon can restrict and release the sliding of the first slider 812 toward the front end side A1 without spending time installing or removing the stop 300A from the first operating part body 811A during surgery. Furthermore, this reduces the likelihood of the surgeon dropping or losing the stop 300A.

[0193] Furthermore, in this embodiment, the surgeon does not need to install or remove the stop 300A from the first operating part body 811A during surgery. Therefore, the surgeon can easily restrict and release the sliding of the first slider 812 toward the front end side A1.

[0194] The second embodiment of the present invention has been described in detail above with reference to the accompanying drawings. However, the specific features are not limited to this embodiment, and design changes that do not depart from the spirit of the present invention are also included in the present invention. In addition, the feature elements in the above-described embodiment and the following variations can be appropriately combined.

[0195] (Modified Example)

[0196] The clamping device 100 of the first embodiment described above may be provided with a plurality of stop members 300. For example, such as Figure 25 As shown, the stop 300 can be provided in the first operating part body 811 of the first operating part 81 and the second operating part body 821 of the second operating part 82. Alternatively, the stop 300 can be provided only in the second operating part body 821. Furthermore, the clamping device 100A of the second embodiment described above can also provide multiple stop 300As. Additionally, the stop 300A can be provided in the second operating part 82, or it can be provided in both the first operating part 81A and the second operating part 82.

[0197] Furthermore, the stop 300 in the first embodiment may also be unable to slide relative to the first sliding groove 815 of the first operating part body 811. For example, the clamping device 100 has a plurality of first sliding grooves 815 along the length direction A of the first operating part body 811, which match the length of the stop 300 in the length direction A. The position of the stop 300 on the first operating part body 811 can be changed according to the position of the first sliding groove 815. Therefore, the surgeon does not need to slide the stop 300; by installing the stop 300 near the first sliding groove 815 on the front end side A1 of the first sliding member 812 provided on the first operating part body 811, the sliding of the first sliding member 812 toward the front end side A1 can be restricted.

[0198] Furthermore, in the first embodiment, the stop 300 restricts the sliding of the first slider 812 toward the front end side A1 by being mounted to or detached from the first operating part body 811. However, the stop 300 may also have a rotating portion with protrusions and recesses, thereby sliding along the first operating part body 811 to move to the mounting position. In this case, for example, the rotating portion of the stop 300 can be combined with the first sliding surface 815a, and a known ratchet structure can be formed by providing multiple protrusions and recesses that allow sliding toward the front end side A1 of the first operating part body 811 and restrict sliding toward the base end side A2.

[0199] Furthermore, the length of the stop member in the longitudinal direction A of the present invention is not particularly limited. Therefore, by increasing the length of the stop member in the longitudinal direction A, the sliding range of the sliding member of the operating part can be adjusted.

[0200] Furthermore, the first operating portion 81 and the second operating portion 82 in the above embodiment do not necessarily have to be formed in a generally cylindrical shape. For example, the first operating portion 81 and the second operating portion 82 may be formed in a polygonal rod shape. The shapes of the first operating portion 81 and the second operating portion 82 are not particularly limited.

[0201] Furthermore, the stop member 300 of the first embodiment can also be used when the first operating portion 81 and the second operating portion 82 of the operating portion 8 are not branched. For example, as Figure 26 As shown, the operating part 8B is provided with a first operating part 81B and a second operating part 82B in a state where it does not extend from the front end 80a toward the base end side A2 in two strands. It should be noted that the first operating part 81B and the second operating part 82B, like in the first embodiment, each have an operating part body, a slider, and a finger rest. The first operating part 81B and the second operating part 82B abut against each other at their adjacent surfaces in the length direction A. In this case, the stop member 300 can also be installed on the first operating part 81B or the second operating part 82B, which can restrict the sliding of the first slider 812 or the second slider 822 toward the front end side A1 and release this restriction.

[0202] In addition, the clamping device of the present invention may include Figure 27 and Figure 28 The stop 300C is shown. For example, the stop 300C is provided in the first sliding groove 815C of the first operating part body 811, and is connected to the base end 300Cb by a fixing pin 300p. The stop 300C is rotatably provided along the length direction A with the fixing pin 300p as the center. According to this structure, as... Figure 27 As shown, the stop 300C does not restrict the first slider 812 from sliding towards the front end A1 when the front end 300Ca faces the front end side A1. Figure 28 As shown, when the base end portion 300Cb faces the base end side A2, the stop member 300C can restrict the sliding of the first sliding member 812 towards the front end side A1. It should be noted that the length of the stop member 300C in the longitudinal direction A can be arbitrarily adjusted to match the length of the first sliding groove 815C or the range of restriction on the first sliding member 812. Furthermore, the stop member 300C can be provided in the second operating part 82.

[0203] In any of the above embodiments, the tissue closure method according to the present invention can clamp even large or irregularly shaped tissues. Depending on the clamping device and the operation method of the clamping device, it is easy to maintain the state of clamping the tissue while operating the arms that can move independently, or the clamping position of the tissue can be changed.

[0204] [Explanation of Symbols]

[0205] 100, 100A clamping device

[0206] 200, 200A feeders

[0207] 300, 300A, 300C stop components

[0208] 1. Processing Unit (Clamping Fixture)

[0209] 2. Fixed arms (central arm, third arm)

[0210] 25 First Opposite Side

[0211] 26 Second Opposite Side

[0212] 3. Movable boom

[0213] 31 First movable boom (first arm)

[0214] 32 Second movable boom (second arm)

[0215] 4. Fixture holding part

[0216] 5 Traction components

[0217] 6. Operation Line (Line)

[0218] 61 First Operation Line

[0219] 62 Second Operating Line

[0220] 7. Sheath

[0221] 8, 8A, 8B First Operating Unit Main Body (Handle)

[0222] 812 First Slider (Slider)

[0223] 82 Second Operations Section

[0224] 821 Second Operating Unit Main Body (Handle)

[0225] 822 Second Slider (Slider)

[0226] A. Length direction

[0227] A1 Front-end side

[0228] A2 basement side

[0229] B. Opening / closing direction (up / down direction)

[0230] C. Thickness direction (left-right direction)

[0231] Organization D

[0232] T defect

[0233] Ta First Part

[0234] Tb Second Part

[0235] Tc, third part.

Claims

1. A clamping device, comprising a processing unit and a feeder, The processing unit includes: Fixed arm The first movable arm and the second movable arm, which can be opened and closed independently relative to the fixed arm, and A clamp holding part capable of locking the first movable arm and the second movable arm in their closed state. The feeder includes an operating section, which has a first slider and a second slider, a first operating section body that slidably supports the first slider, and a second operating section body that slidably supports the second slider. The feeder opens and closes the first movable arm relative to the fixed arm via the first slider, and opens and closes the second movable arm relative to the fixed arm via the second slider. The clamping device is characterized in that... The first operating part body and the second operating part body are separated from each other by forking from the front end of the operating part. The first and second sliding members are provided with locking positions within their respective sliding ranges. In the locking positions, the base ends of the first and second movable arms are engaged with the clamp holding portion and locked. The clamping device also includes a stop. When the first movable arm and the fixed arm clamp the tissue, the stop is configured to engage at a locking position that is closer to the front end of the operating part and within the sliding range of the first slide than the first slide, such that the stop abuts against the front end of the first slide. The locking position is located closer to the front end of the operating part than the locking position.

2. The clamping device as described in claim 1, characterized in that, The first operating part body and the second operating part body are respectively provided with a first sliding groove and a second sliding groove corresponding to the first sliding member and the second sliding member.

3. The clamping device as described in claim 2, characterized in that, The stop member has a base, a first outer wall portion, a second outer wall portion, a middle wall portion, a first slit portion located between the first outer wall portion and the middle wall portion, and a second slit portion located between the second outer wall portion and the middle wall portion. The middle wall portion can be inserted into the first sliding groove or the second sliding groove. The stop is installed by clamping the first operating part body or a part of the second operating part body through the first outer wall portion and the second outer wall portion.

4. The clamping device as described in claim 1, characterized in that, Both the first operating part body and the second operating part body are provided with protruding thread portions. The stop member has a through hole and an inner circumferential surface. The inner circumferential surface is formed with a concave thread portion that engages with the convex thread portion.

5. The clamping device as described in claim 1, characterized in that, The first operating part body and the second operating part body are respectively provided with a first sliding groove and a second sliding groove corresponding to the first sliding member and the second sliding member, and the stop member can be installed in a manner that covers a portion of at least one of the first sliding groove and the second sliding groove.

6. The clamping device as described in claim 1, characterized in that, The stop can rotate around the fixed pin as the center.

7. The clamping device as described in claim 1, characterized in that, The feeder also includes: The first operating line and the second operating line connecting the first slider and the second slider respectively, and A first traction member and a second traction member are respectively connected to the first operating line and the second operating line.

8. The clamping device as described in claim 7, characterized in that, The feeder opens and closes the first movable arm relative to the fixed arm via the first slider, the first operating line, and the first traction member, and opens and closes the second movable arm relative to the fixed arm via the second slider, the second operating line, and the second traction member.

9. The clamping device as described in claim 8, characterized in that, The first and second sliding members are also provided with a retention position within their respective sliding ranges. If the first or second sliding member slides toward the base end and passes the locking position to reach the retention position, the first or second traction member will deform or break, thus releasing the connection between the treatment part and the feeder.

10. A clamping device comprising a fixed arm disposed between a first movable arm and a second movable arm, a feeder, a slider capable of opening and closing the first movable arm, and a stop member restricting movement of the slider, characterized in that, The feeder includes an operating section, which has a first operating section body and a second operating section body, the first operating section body and the second operating section body being forked and separated from each other from the front end of the operating section. The first movable arm and the fixed arm are capable of opening and closing. With the first movable arm and the fixed arm closed, the stop restricts the movement of the slider, thereby limiting only the movement of the first movable arm relative to the fixed arm in the opening direction. With the stop restricting the movement of the slider, the second movable arm and the fixed arm can open and close.

11. The clamping device as claimed in claim 10, characterized in that, The clamping device has an operating part body on the base end side of the feeder, and the stop member can be installed on the operating part body at a position further forward than the slider.

Images