Soft tissue clamp with traction function and soft tissue clamping method thereof

Abstract

The present application relates to a kind of soft tissue clamps with traction function, comprising traction component and operating assembly connection composition;Two symmetrical elastic metal claw pairs are provided at the front end of traction component, and the rear end of traction component is provided with sleeve, metal claw rear end is inserted into sleeve after closure and is connected with metal claw connecting piece, metal claw connecting piece is located in sleeve and is connected with unhooking device;Card protrusion is provided at the end of metal claw, metal claw card hole is provided at the rear end of sleeve, and card protrusion is matched with metal claw card hole;Ring is connected on one of metal claw, and the outer circumference of ring is tangent to metal claw by clamping portion;Operating assembly includes flexible tube, flexible wire and handle assembly.The soft tissue clamp is accurate in positioning, and the ring with traction effect is convenient for positioning and traction when endoscopic surgical treatment is carried out, provides open view for treatment, increases the safety of operation, and improves the efficiency of operation.

Description

TECHNICAL FIELD

[0001] The present application relates to a soft tissue clamp with traction function and a soft tissue clamping method thereof, and relates to the technical field of endoscopic treatment of the digestive tract. BACKGROUND

[0002] Endoscopy is a technique of sending a scope into the body cavity to check and treat under direct vision. It is divided into two types: non-invasive and invasive. The former refers to the direct insertion of an endoscope for the examination of cavities that communicate with the outside world (such as the digestive tract, respiratory tract, urinary tract, etc.); the latter is to send an endoscope through an incision for the examination of closed body cavities (such as the chest cavity, abdominal cavity, joint cavity, etc.). Endoscopic treatment belongs to the minimally invasive type, and its spatial position has certain limitations for surgical treatment. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a soft tissue clamp with traction function, which is accurate in positioning and has a traction ring, so as to facilitate positioning and traction during endoscopic instrument surgical treatment, provide an open field of view for treatment, increase the safety of the operation, and improve the efficiency of the operation.

[0004] To solve the above problems, the specific technical scheme of the present application is as follows: a soft tissue clamp with traction function, comprising a traction assembly and an operating assembly connected to form a whole; two elastic metal jaws are symmetrically arranged at the front end of the traction assembly; a sleeve is arranged at the rear end of the traction assembly; the metal jaws are inserted into the sleeve after being closed at the rear end and are connected with a metal jaw connecting piece; the metal jaw connecting piece is located in the sleeve and is connected with an unhooking device; a clamping protrusion is arranged at the tail end of the metal jaw, and a metal jaw clamping hole is arranged at the rear end of the sleeve; the clamping protrusion is in clamping connection with the metal jaw clamping hole; a ring is connected to one of the metal jaws, and the outer circumference of the ring is tangent to the metal jaw through a clamping part; the operating assembly comprises a flexible tube, a flexible wire, and a handle assembly; the handle assembly is connected to the outer end of the flexible wire; a hook is arranged at the front end of the flexible wire and is connected with a connecting hole in the metal jaw connecting piece through the unhooking device.

[0005] The unhooking device is composed of an inner connecting buckle and a connecting column; the front end of the connecting column is provided with a plug-in ring, the outer wall of the plug-in ring is coaxially matched with the inner wall of the sleeve, and the end surface of the connecting column is in contact with the rear end surface of the sleeve; the inner connecting buckle is coaxially matched in the connecting column; two positioning through holes are symmetrically arranged on the circumference of the inner connecting buckle; the sleeve is provided with a bent edge at the position corresponding to the positioning through hole; the bent edge is lapped on the front end surface of the positioning through hole; a convex edge is arranged at the rear end of the inner connecting buckle, and the end surface of the convex edge is clamped with the rear end surface of the plug-in ring; the rear end of the connecting column is connected with the flexible tube through a welding column.

[0006] The rear end of the metal claw is an inwardly recessed arc structure, and a rectangular hole is arranged at the end of the arc structure; the upper surface and the lower surface of the front end of the metal claw connector are respectively provided with a fixed column arranged symmetrically.

[0007] The front end of the metal claw is a downward hook structure, and a tooth structure is arranged on the end face of the hook structure; the teeth of the two metal claws are engaged after being closed.

[0008] The transition between the arc structure and the body of the metal claw is provided with a long strip-shaped rib.

[0009] The handle assembly comprises a sliding ring, a sliding rod and a rotating handle; the sliding rod is a hollow structure, and the front end portion is coaxially matched with the rear end of the flexible tube; a long strip-shaped sliding channel parallel to the axis is arranged on the outer circumference of the sliding rod; the sliding ring is coaxially matched with the outer circumference of the sliding rod and is in sliding fit with the long strip-shaped sliding channel; the rear end of the flexible wire is connected with the sliding ring after being inserted into the hollow inner cavity of the sliding rod; and the rotating handle is connected to the outer end portion of the sliding rod.

[0010] The method for clamping soft tissue by using the soft tissue clamp of claim 6 comprises the following steps:

[0011] 1) The sliding ring is pulled backward to drive the two metal claws to close and retract into the sleeve through the flexible wire and the metal claw connector;

[0012] 2) When the endoscope enters the internal environment for detection, the soft tissue clamp and the ring are inserted into the endoscope and extended from the port of the endoscope, and the sliding ring is pushed forward to drive the two metal claws to open through the flexible wire and the metal claw connector;

[0013] 3) When the target tissue is observed by the endoscope, the sliding ring is pulled backward to clamp the target tissue in the closing process; if the clamping position is found to be inaccurate, the sliding ring and the sliding rod can be repeatedly moved to open, close and rotate the metal claws until the clamping position of the metal claws is accurate;

[0014] 4) When the sliding ring is pulled backward to the limit position, the metal claw end is provided with a clamping protrusion which is clamped with the metal claw clamping hole of the sleeve, and the metal claw is completely positioned to achieve permanent closing;

[0015] 5) The sliding ring is continuously pulled, the hook of the flexible wire is continuously straightened under stress, thereby being separated from the metal claw connector, and the sleeve is separated from the hooking device;

[0016] 6) the previous unhooked operating assembly is extracted from the endoscope channel and a new soft tissue clip is inserted until the traction assembly appears in the endoscope field of view, the sliding ring in the handle assembly is pushed to open the metal jaws, the metal jaw without a ring is placed on the ring of the previous metal jaw, and the traction is pulled to the desired position, and the previous ring serves as an auxiliary positioning and traction base for the next metal jaw.

[0017] The present application adopts the structure of the metal jaw with a ring and the unhooking device in the sleeve to achieve the function of the metal jaw being separated from the rear after positioning, which facilitates the pulling of the ring on the previous metal clip by another soft tissue clip and provides a wide visual space for the cutting of the target tissue. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole perspective view of the soft tissue clip with traction function.

[0019] Figure 2 It is a partial perspective view of the soft tissue clip with traction function.

[0020] Figure 3 It is a structural diagram of the metal jaw with a ring.

[0021] Figure 4 It is a structural diagram of the metal connecting piece.

[0022] Figure 5 It is a sectional view of the unhooking device.

[0023] Figure 6 It is a partial sectional view of the handle assembly.

[0024] Figure 7 It is a structure diagram of the soft tissue clip clamping the target tissue.

[0025] Figure 8 It is a structure diagram of the soft tissue clip releasing the target tissue.

[0026] Figure 9 It is a schematic diagram of the unhooking device of the soft tissue clip separating from the traction assembly.

[0027] Figure 10 It is a schematic diagram of the connection and positioning of another new soft tissue clip with the original ring. DETAILED DESCRIPTION

[0028] As Figures 1 to 4As shown, a soft tissue clamp with traction function, comprising traction assembly 1 and operation assembly 2 connected to constitute; the front end of traction assembly 1 is symmetrically provided with two elastic metal claws 3, the rear end of traction assembly 1 is provided with sleeve 5, the rear end of metal claw 3 is inserted into sleeve 5 after closing and is connected with metal claw connecting piece 4, metal claw connecting piece 4 is located in sleeve 5 and is connected with unhooking device; the end of metal claw 3 is provided with clamping convex 3f, the rear end of sleeve 5 is provided with metal claw clamping hole 5c, clamping convex 3f is clamped and matched with metal claw clamping hole 5c; ring 3a is connected on one of metal claws 3, the outer circumference of ring 3a is tangent to metal claw 3 through clamping part 3c, ring 3a is of elastic material, its material is not limited to silica gel, its shape is not limited to ring shape, and it can also be square or other shapes; operation assembly 2 comprises flexible tube 8, flexible wire 9 and handle assembly 10, handle assembly 10 connects the outer end of flexible wire 9, the front end of flexible wire 9 is provided with hook 9a, hook 9a is connected with connecting hole 4c on metal claw connecting piece 4 through unhooking device.

[0029] As shown, Figure 5 The unhooking device is composed of inner connecting buckle 6 and connecting column 7, wherein the front end of connecting column 7 is provided with plug-in ring 7c, the outer wall of plug-in ring 7c is coaxially matched with the inner wall of sleeve 5, the end surface 7b of connecting column 7 is in contact with the rear end surface of sleeve 5; inner connecting buckle 6 is coaxially matched in connecting column 7, the circumference of inner connecting buckle 6 is symmetrically provided with two positioning through holes, sleeve 5 is provided with bending edge 5b at the position corresponding to the positioning through hole, and the bending edge 5b is lapped on the front end surface of the positioning through hole; the rear end of inner connecting buckle 6 is provided with convex edge, and the end surface of convex edge is clamped with the rear end surface of plug-in ring 7c; as shown, Figure 4 In order to ensure that the rear end of metal claw connecting piece 4 can be in smooth contact with the front end surface of inner connecting buckle 6, the rear end 4d of metal claw connecting piece 4 is smaller in width than the front end, and is transitioned through inclined surface 4b; the rear end of connecting column 7 is connected with flexible tube 8 through welding column 8a. The rear end surface of plug-in ring 7c can limit the convex edge of the rear end of inner connecting buckle 6, and is clamped with bending edge 5b through the positioning through hole, so as to ensure the connection with sleeve 5. After the limit tensile force of metal claw connecting piece 4 is applied to inner connecting buckle 6, the bending edge 5b will be unhooked from the positioning through hole, so as to complete the unhooking function. Plug-in ring 7c is located between sleeve 5 and inner connecting buckle 6, so as to realize the relative movement of sleeve 5 and connecting column 7. When metal claw 3 rotates, sleeve 5 rotates with it, and connecting column 7 and flexible tube 8 do not rotate.

[0030] As shown, Figure 3As shown, the rear end of the metal claw 3 is an inwardly recessed arc structure 3g, which has elastic reserve due to the opposition of the two arc structures 3g, and is opened under the elastic action when the metal claw 3 extends from the sleeve 5; rectangular holes 3e are arranged at the ends of the arc structure 3g, the upper surface and the lower surface of the front end of the metal claw connector 4 are respectively provided with fixed columns 4a, and the rectangular holes 3e at the ends of the two metal claws 3 are respectively sleeved on the fixed columns 4a at the corresponding positions. The front end of the metal claw 3 is a downward hook structure 3b, the end face of the hook structure 3b is provided with a toothed structure, and the teeth of the two metal claws 3 after opposition are engaged, so that the target tissue is clamped. Long strip-shaped ribs 3d are arranged at the transition between the arc structure 3g and the body of the metal claw 3, which increases the rigidity and elasticity of the metal claw 3, so that the metal claw 3 can be freely extended and retracted in the sleeve 5.

[0031] As shown in Figure 6 , the handle assembly 10 includes a sliding ring 10a, a sliding rod 10b and a rotating handle 10c, the sliding rod 10b is a hollow structure, and the front end is coaxially matched with the rear end of the flexible tube 8, a long strip-shaped slide is arranged on the outer circumference of the sliding rod 10b and is parallel to the axis, the sliding ring 10a is coaxially matched with the outer circumference of the sliding rod 10b and is slidingly matched with the long strip-shaped slide, the rear end of the flexible wire 9 is connected with the sliding ring 10a after being inserted into the hollow cavity of the sliding rod 10b; the rotating handle 10c is connected with the outer end of the sliding rod 10b.

[0032] The method for clamping soft tissue by using the soft tissue clamp comprises the following steps:

[0033] 1) The sliding ring 10a is pulled backward, the two metal claws 3 are closed and retracted into the cavity 5a in the sleeve 5 through the flexible wire 9 and the metal claw connector 4;

[0034] 2) When the endoscope enters the internal environment of the human body for detection, the soft tissue clamp and the ring 3a are placed in the endoscope and are extended from the port of the endoscope, the sliding ring 10a is pushed forward, and the two metal claws 3 are opened through the flexible wire 9 and the metal claw connector 4;

[0035] 3) When the endoscope observes the target tissue, the sliding ring 10a is pulled backward, and the two metal claws 3 clamp the target tissue in the closing process, if the clamping position is found to be inaccurate, the sliding ring 10a and the rotating sliding rod 10b can be repeatedly moved to open, close and rotate the metal claw 3 until the metal claw 3 clamps the target tissue accurately, as shown in Figure 7 and Figure 8 ;

[0036] 4) When the sliding ring 10a is pulled backward to the limit position, the metal claw 3 is completely positioned and permanently closed by the clamping of the clamping convex 3f at the end of the metal claw 3 with the metal claw clamping hole 5c of the sleeve 5, as shown in Figure 9 .

[0037] 5) Continue pulling the slide ring 10a, the hook 9a of the flexible wire 9 continues to be forced to straighten, thus disengaging from the metal claw connector 4, while the sleeve 5 is disengaged from the unhooking device;

[0038] 6) The previously unhooked operation assembly 2 is extracted from the endoscope channel, and then another new soft tissue clip is inserted until the traction assembly 1 appears in the endoscope field of view, the slide ring 10a in the handle assembly 10 is pushed to open the metal claw 3, where the metal claw without the ring 3a is sleeved on the ring 3a of the metal claw 3 in the previous step, and is pulled to the desired location, so that the previous ring 3a serves as the auxiliary positioning and traction basis of the latter metal claw 3, as shown in Figure 10 ​

Claims

1. A soft tissue clamp having a traction function, characterized by: It comprises a traction assembly (1) and an operating assembly (2) connected together; The front end of the traction assembly (1) is symmetrically provided with two elastic metal claws (3) which are closed together, the rear end of the traction assembly (1) is provided with a sleeve (5), the rear end of the metal claw (3) is inserted into the sleeve (5) after being closed and is connected with a metal claw connecting piece (4), the metal claw connecting piece (4) is located in the sleeve (5) and is connected with a disengaging device; a clamping protrusion (3f) is arranged at the end of the metal claw (3), a metal claw clamping hole (5c) is arranged at the rear end of the sleeve (5), the clamping protrusion (3f) is clamped and matched with the metal claw clamping hole (5c); a ring (3a) is connected to one of the metal claws (3), the outer circumference of the ring (3a) is tangent to the metal claw (3) through a clamping portion (3c); The operating assembly (2) comprises a flexible tube (8), a flexible wire (9) and a handle assembly (10), the handle assembly (10) is connected to the outer end of the flexible wire (9), the front end of the flexible wire (9) is provided with a hook (9a), the hook (9a) is connected with the metal claw connecting piece (4) through the disengaging device and a connecting hole (4c) on the metal claw connecting piece (4); The disengaging device is composed of an inner connecting buckle (6) and a connecting column (7), the front end of the connecting column (7) is provided with an insertion ring (7c), the outer wall of the insertion ring (7c) is coaxially matched with the inner wall of the sleeve (5), the end surface (7b) of the connecting column (7) is in contact with the rear end surface of the sleeve (5); the inner connecting buckle (6) is coaxially matched in the connecting column (7), two positioning through holes are symmetrically arranged on the circumference of the inner connecting buckle (6), the sleeve (5) is provided with a bent edge (5b) at the position corresponding to the positioning through hole, the bent edge (5b) is overlapped on the front end surface of the positioning through hole; a protruding edge is arranged at the rear end of the inner connecting buckle (6), the end surface of the protruding edge is clamped with the rear end surface of the insertion ring (7c); the rear end of the connecting column (7) is connected with the flexible tube (8) through a welding column (8a).

2. The soft tissue clamp with a traction function of claim 1, wherein: The rear end of the metal claw (3) is an inwardly recessed arc-shaped structure (3g), a rectangular hole (3e) is arranged at the end of the arc-shaped structure (3g), the upper surface and the lower surface of the front end of the metal claw connecting piece (4) are respectively symmetrically provided with a fixed column (4a), the rectangular holes (3e) at the ends of the two metal claws (3) are respectively sleeved on the fixed columns (4a) at the corresponding positions.

3. The soft tissue clamp with a traction function of claim 1, wherein: The front end of the metal claw (3) is a downwardly bent hook structure (3b), the end surface of the bent hook structure (3b) is provided with a tooth-shaped structure, the teeth of the two metal claws (3) are engaged after being closed together.

4. The soft tissue clamp with a traction function of claim 2, wherein: The arc-shaped structure (3g) and the transition of the metal claw (3) are provided with a long strip-shaped rib (3d).

5. The soft tissue clamp with a traction function of claim 1, wherein: The handle assembly (10) comprises a sliding ring (10a), a sliding rod (10b) and a rotating handle (10c), the sliding rod (10b) is a hollow structure, and the front end is coaxially matched with the rear end of the flexible tube (8); a long strip-shaped sliding channel parallel to the axis is arranged on the outer circumference of the sliding rod (10b); the sliding ring (10a) is coaxially matched with the outer circumference of the sliding rod (10b) and is in sliding fit with the long strip-shaped sliding channel; the rear end of the flexible wire (9) is connected with the sliding ring (10a) after penetrating into the hollow inner cavity of the sliding rod (10b); and the rotating handle (10c) is connected with the outer end of the sliding rod (10b).

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