Mucous membrane traction device for endoscopic surgery

Abstract

The mucous membrane traction device for the endoscopic surgery comprises a far-end traction part, a near-end operation part and a connecting lead, the far-end traction part comprises an installation ring and a traction piece, and the installation ring is used for being arranged at the other end of an insertion tube in a sleeving mode; a mounting groove is formed in the mounting ring, and the traction piece is arranged in the mounting groove; the traction piece comprises a connecting block, a first clamping block and a second clamping block, and the first clamping block and the second clamping block are rotationally connected, so that the first clamping block and the second clamping block can be relatively opened and closed like a forceps clip structure, and the function of clamping the mucous membrane is achieved; the two sides of the connecting block are slidably connected with the two sides of the mounting groove. A first through hole is further formed in the mounting ring; a first adjusting line, a second adjusting line and a third adjusting line in the connecting lead are correspondingly connected with the connecting block, the first clamping block and the second clamping block respectively, and the other ends of the adjusting lines penetrate out of the mounting ring through the first through hole, enter the jaw opening and are connected with the near-end operation part.

Description

Technical Field

[0001] The present invention belongs to the field of medical devices, and particularly relates to a mucosal traction device for endoscopic surgery. Background Art

[0002] Clinically, endoscopes are often used for diagnosing and treating diseases. Commonly used endoscopes such as thoracoscopes and laparoscopes often use multiple holes for surgical operations, while digestive endoscopes often use a single endoscope for operation, which is more convenient for diagnostic observation or puncture. However, in recent years, there have been more and more surgical operations under digestive endoscopes, such as endoscopic submucosal dissection (ESD), which can treat early digestive tract tumors and has the advantages of less trauma, low cost, and quick recovery, and has developed vigorously in recent years.

[0003] However, how to maintain the tension of the diseased tissue and clear vision during the operation is the key to reducing complications and ensuring the safety and effectiveness of the operation, especially for difficult ESD treatments. At present, it basically depends entirely on the experience and skills of the surgeon. If the operation is not proper, its complications such as bleeding, perforation, and postoperative stenosis will bring great pain and burden to the patient. This is mostly because ESD is a single-endoscope operation, unlike thoracoscopes and laparoscopes that can use other instruments for traction to fully expose the surgical field. Some scholars have proposed using a double-endoscope operation in the literature, with the other endoscope for traction. However, the second endoscope in this method may affect the operability of the main operating endoscope, and it requires two light sources, more than two endoscope operators and assistants. In addition, the second endoscope is also difficult to reach the proximal end of the sigmoid colon, with great limitations. In addition, other methods reviewed in the above literature, such as percutaneous traction method, weight-assisted method, wire-clamping traction method, etc., all have certain limitations. Some scholars have also proposed adding equipment at the endoscope operation head for traction, but the structure is complex and it is necessary to arrange components outside the endoscope, which may increase the injury, such as Chinese Patent No.: CN202044337U "A Mucosal Traction Device".

[0004] It can be seen that how to provide a mucosal traction device dedicated to endoscopic surgery, which is convenient for medical staff to effectively clamp and traction the mucosa during endoscopic surgery, is beneficial to surgical operation, provides convenience for difficult cases, reduces the operation time, and improves the operation efficiency is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a mucosal traction device for endoscopic surgery. The endoscope includes an operating handle and an insertion tube. One end of the insertion tube is connected to the operating handle, and a forceps opening is provided through the inside of the insertion tube. The mucosal traction device includes: a distal traction part, which includes a mounting ring and a traction member. The mounting ring is sleeved on the other end of the insertion tube; an installation groove is provided inside the mounting ring; the traction member includes a connecting block, a first clamping block and a second clamping block. One end of the connecting block is rotatably connected to one end of the first clamping block. The second clamping block is disposed adjacent to one side of the first clamping block, and one end of the second clamping block is rotatably connected to one end of the first clamping block; the connecting block, the first clamping block and the second clamping block are all located inside the installation groove. The other end of the connecting block is connected to the top of the installation groove by a spring. Both sides of the connecting block are slidably connected to both sides of the installation groove. The first clamping block and the second clamping block are disposed near the outlet end of the installation groove; the mounting ring is also provided with a first through hole, and the first through hole is communicated with the installation groove; a proximal operating part, which is sleeved on the operating handle; a connecting lead, which includes a first adjustment line, a second adjustment line and a third adjustment line. One end of the first adjustment line is connected to the connecting block, one end of the second adjustment line is connected to the first clamping block, and one end of the third adjustment line is connected to the second clamping block; the other ends of the first adjustment line, the second adjustment line and the second adjustment line all pass through the first through hole to penetrate out of the mounting ring and pass through the forceps opening to be connected to the proximal operating part

[0006] Optionally, sliders are provided on both sides of the connecting block, and chutes are provided on both sides of the installation groove. The two sliders are respectively slidably connected in the two chutes; the first through hole is communicated with one of the chutes, and one end of the first adjustment line is connected to the slider on the same side as the first through hole.

[0007] Optionally, a lead wire groove is provided inside the connecting block. The other ends of the second adjustment line and the third adjustment line both pass through the lead wire groove and converge with the first adjustment line to form a converging section. The converging section is disposed in the chute near the first through hole; the other end of the converging section passes through the first through hole to penetrate out of the mounting ring and pass through the forceps opening to be connected to the proximal operating part.

[0008] Optionally, a positioning retaining ring is provided at the front end of the mounting ring. The inner diameter of the positioning retaining ring is smaller than the inner diameter of the mounting ring. When the mounting ring is sleeved on the insertion tube, the other end of the insertion tube abuts against the positioning retaining ring; the first through hole is provided on the positioning retaining ring.

[0009] Optionally, a spring return rotating shaft is provided at the rotating connection between the first clamping block and the connecting block, and one end of the second adjusting wire is connected to one end of the spring return rotating shaft, so that when the second adjusting wire is pulled, the spring return rotating shaft is driven to rotate.

[0010] Optionally, the proximal operating portion further includes a fixing sleeve. The fixing sleeve has a semi-surrounding annular structure. The fixing sleeve is sleeved on the operating handle, and an adjusting portion is provided on one side of the fixing sleeve; a second through hole is opened at the bottom of the adjusting portion, and the other end of the converging section passes through the second through hole and is connected to the adjusting portion.

[0011] Optionally, the adjusting portion is provided with three knobs; the other ends of the first adjusting wire, the second adjusting wire, and the third adjusting wire are respectively connected to the three knobs.

[0012] Optionally, a protective sleeve is sleeved outside the converging section.

[0013] Optionally, the first clamping block and the second clamping block rotate relative to each other in a first direction, and the connecting block and the first clamping block rotate relative to each other in a second direction; the first direction is perpendicular to the second direction.

[0014] Beneficial effects:

[0015] The present invention provides a mucosal traction device for endoscopic surgery, which includes a distal traction part, a proximal operation part and a connecting lead wire. The distal traction part includes a mounting ring and a traction member. During use, the mounting ring is sleeved on the other end of the insertion tube. An installation groove is formed inside the mounting ring, and the traction member is arranged in the installation groove. The traction member includes a connecting block, a first clamping block and a second clamping block. The first clamping block and the second clamping block are rotatably connected to each other, so that the first clamping block and the second clamping block can relatively open and close and converge like a clamping structure to achieve the function of clamping the mucosa. At the same time, the connecting block and the first clamping block are rotatably connected, so that the connecting block and the first clamping block can rotate up and down to adjust the clamping angle of the traction member. During use, the clamping position of the first clamping block and the second clamping block can be raised or lowered according to the position of the mucosa, so as to clamp the mucosa more accurately. Both sides of the connecting block are slidably connected to both sides of the installation groove, and the other end of the connecting block is connected to the top of the installation groove through a spring, so that the connecting block is subjected to a pulling force when the force is removed and automatically slides back to the installation groove. The mounting ring is also provided with a first through hole, which is communicated with the installation groove and is used for the connecting lead wire to pass through. The first adjustment wire, the second adjustment wire and the third adjustment wire in the connecting lead wire are respectively connected to the connecting block, the first clamping block and the second clamping block, and the other ends all pass through the first through hole to penetrate the mounting ring and enter the forceps opening to be connected to the proximal operation part. Medical staff can adjust the first adjustment wire, the second adjustment wire and the third adjustment wire through the proximal operation part, and then adjust the moving positions of the connecting block connection, the first clamping block and the second clamping block to realize the function of traction on the mucosa during the operation. In this way, a mucosal traction device dedicated to endoscopic surgery is constructed. During use, it can be nested at the front end of the endoscope of the insertion tube, and the traction member can be traction-controlled through the connecting lead wire, which is convenient for medical staff to effectively clamp and traction the mucosa during endoscopic surgery, thereby exposing the field of vision, facilitating the operation, providing convenience for difficult cases, reducing the operation time, and solving the dilemma of inability to assist traction during single-laparoscope operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present specification or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the overall structure of the mucosal traction device in the embodiment of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the distal traction part in the embodiment of the present invention;

[0019] Figure 3Schematic diagram of the distal traction part in the embodiment of the present invention;

[0020] Figure 4 Partial cross-sectional view of the distal traction part in the embodiment of the present invention;

[0021] Figure 5 Partial schematic diagram of the structure of the distal traction part in the embodiment of the present invention;

[0022] Figure 6 Schematic diagram of the structure of the traction part in the embodiment of the present invention;

[0023] Figure 7 Schematic diagram of the structure of the traction part in the embodiment of the present invention;

[0024] Figure 8 Partial cross-sectional view of the distal traction part in the embodiment of the present invention; Brief description of the drawings:

[0025] 1 - Endoscope;

[0026] 11 - Operating handle;

[0027] 12 - Insertion tube;

[0028] 121 - Forceps port;

[0029] 2 - Distal traction part;

[0030] 21 - Mounting ring;

[0031] 211 - Mounting groove;

[0032] 2111 - Slide groove;

[0033] 212 - First through hole;

[0034] 213 - Positioning retaining ring;

[0035] 22 - Traction part;

[0036] 221 - Connecting block;

[0037] 2211 - Slide block;

[0038] 2212 - Lead groove;

[0039] 222 - First clamping block;

[0040] 223 - Second clamping block;

[0041] 3 - Proximal operating part;

[0042] 31 - Fixed sleeve;

[0043] 32 - Adjusting part;

[0044] 4 - Connecting lead;

[0045] 41 - The first adjustment line;

[0046] 42 - The second adjustment line;

[0047] 43 - The third adjustment line;

[0048] 44 - The protective cover; Detailed implementation manner

[0049] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0050] Meanwhile, in the embodiments of this specification, when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in the embodiments of this specification are for illustrative purposes only and are not intended to limit the present invention.

[0051] The present invention provides a mucosal traction device for endoscopic surgery. The endoscope 1 includes an operating handle 11 and an insertion tube 12. One end of the insertion tube 12 is connected to the operating handle 11. A forceps opening 121 is provided through the interior of the insertion tube 12. The mucosal traction device includes: a distal traction part 2, the distal traction part 2 includes a mounting ring 21 and a traction member 22, and the mounting ring 21 is sleeved on the other end of the insertion tube 12; an installation groove 211 is formed inside the mounting ring 21; the traction member 22 includes a connection block 221, a first clamping block 222 and a second clamping block 223. One end of the connection block 221 is rotatably connected to one end of the first clamping block 222. The second clamping block 223 is disposed adjacent to one side of the first clamping block 222, and one end of the second clamping block 223 is rotatably connected to one end of the first clamping block 222; the connection block 221, the first clamping block 222 and the second clamping block 223 are all located inside the installation groove 211. The other end of the connection block 221 is connected to the top end of the installation groove 211 by a spring. Both sides of the connection block 221 are slidably connected to both sides of the installation groove 211. The first clamping block 222 and the second clamping block 223 are disposed near the outlet end of the installation groove 211; the mounting ring 21 is further provided with a first through hole 212, and the first through hole 212 communicates with the installation groove 211; a proximal operating part 3 is sleeved on the operating handle 11; a connection lead 4, the connection lead 4 includes a first adjustment line 41, a second adjustment line 42 and a third adjustment line 43. One end of the first adjustment line 41 is connected to the connection block 221, one end of the second adjustment line 42 is connected to the first clamping block 222, and one end of the third adjustment line 43 is connected to the second clamping block 223; the other ends of the first adjustment line 41, the second adjustment line 42 and the second adjustment line 42 all pass through the first through hole 212 to penetrate out of the mounting ring 21 and pass through the forceps opening 121 to be connected to the proximal operating part 3.

[0052] Specifically, as Figure 1-3 shown, an embodiment of the present invention provides a mucosal traction device for endoscopic surgery, including a distal traction part 2, a proximal operating part 3 and a connection lead 4. The distal traction part 2 includes a mounting ring 21 and a traction member 22. During use, the mounting ring 21 is sleeved on the other end of the insertion tube 12; as Figure 4 shown, an installation groove 211 is formed inside the mounting ring 21, and the traction member 22 is arranged inside the installation groove 211; as Figure 6-7As shown, the traction member 22 includes a connecting block 221, a first clamping block 222 and a second clamping block 223. The first clamping block 222 and the second clamping block 223 are rotatably connected to each other, so that the first clamping block 222 and the second clamping block 223 can open and close and converge relative to each other similar to a clamp structure, achieving the function of clamping the mucosa. At the same time, the connecting block 221 and the first clamping block 222 are rotatably connected, so that the connecting block 221 and the first clamping block 222 can rotate up and down to adjust the clamping angle of the traction member 22. During use, the clamping position of the first clamping block 222 and the second clamping block 223 can be raised or lowered according to the position of the mucosa, so as to clamp the mucosa more accurately. Both sides of the connecting block 221 are slidably connected to both sides of the installation groove 211, and the other end of the connecting block 221 and the top end of the installation groove 211 are connected by a spring, so that the connecting block 221 is subjected to a pulling force when the force is removed and automatically slides back to the installation groove 211. The installation ring 21 is also provided with a first through hole 212, and the first through hole 212 is communicated with the installation groove 211 for the lead wire 4 to pass through. The first adjustment wire 41, the second adjustment wire 42 and the third adjustment wire 43 in the connecting lead wire 4 are respectively connected to the connecting block 221, the first clamping block 222 and the second clamping block 223, and the other ends all pass through the first through hole 212 to penetrate out of the installation ring 21 and enter the forceps port 121 to be connected to the proximal operating part 3. Medical staff can adjust the first adjustment wire 41, the second adjustment wire 42 and the third adjustment wire 43 through the proximal operating part 3, and then adjust the moving positions of the connecting block 221, the first clamping block 222 and the second clamping block 223, realizing the function of traction on the mucosa during the operation. In this way, a mucosa traction device dedicated to endoscopic surgery is constructed. During use, it can be nested at the front end of the endoscope of the insertion tube 12, and the traction member 21 is traction-controlled through the connecting lead wire 4, facilitating medical staff to effectively clamp and traction the mucosa during endoscopic surgery, thereby exposing the field of view, facilitating the operation, providing convenience for difficult cases, reducing the operation time, and solving the dilemma of inability to assist traction during single-laparoscope operation.

[0053] In some possible implementation manners, sliders 2211 are arranged on both sides of the connecting block 221, and sliding grooves 2111 are arranged on both sides of the installation groove 211. The two sliders 2211 are respectively arranged in the two sliding grooves 2111 for sliding connection. The first through hole 212 is communicated with one of the sliding grooves 2111, and one end of the first adjustment wire 41 is connected to the slider 2211 on the same side as the first through hole 212.

[0054] Specifically, as shown in the figure, sliders 2211 are provided on both sides of the connecting block 221, and chutes 2111 are provided on both sides of the mounting groove 211. On the one hand, the connecting block 221 can be clamped and fixed in the mounting groove 211 through the sliders 2211 on both sides, improving the fixing stability of the connecting block 221 in the mounting groove 211. At the same time, the stability of the front-back sliding of the connecting block 221 can also be improved through the long-strip-shaped sliders 2211 and the chutes 2111, keeping the connecting block 221 always parallel and stable relative to the mounting ring 21 during the mucosal clamping process and not tilting back and forth due to the weight of the clamping.

[0055] In some possible implementation manners, a lead wire groove 2212 is provided inside the connecting block 221. The other ends of the second adjusting wire 42 and the third adjusting wire 43 both pass through the lead wire groove 2212 and converge with the first adjusting wire 41 to form a converging section. The converging section is arranged in the chute 2111 close to the first through hole 212. The other end of the converging section passes through the first through hole 212 to penetrate out of the mounting ring 21 and passes through the forceps opening 121 to be connected to the proximal operating part 3.

[0056] Specifically, as Figure 7 shown, a lead wire groove 2212 is provided inside the connecting block 221 for threading the second adjusting wire 42 and the third adjusting wire 43. Among them, the other ends of the first adjusting wire 41, the second adjusting wire 42, and the third adjusting wire 43 converge with each other to form a converging section. As Figure 4 shown, the converging section is arranged in the chute 2111 close to the first through hole 212 and penetrates out of the mounting ring 21 through the first through hole 212.

[0057] In some possible implementation manners, a positioning retaining ring 213 is provided at the front end of the mounting ring 21. The inner diameter of the positioning retaining ring 213 is smaller than the inner diameter of the mounting ring 21. When the mounting ring 21 is sleeved on the insertion tube 12, the other end of the insertion tube 12 abuts against the positioning retaining ring 213. The first through hole 212 is opened on the positioning retaining ring 213.

[0058] Specifically, as Figure 8 shown, a positioning retaining ring 213 is provided at the front end of the mounting ring 21. During use, medical staff can directly sleeve the mounting ring 21 on the other end of the insertion tube 12 (i.e., the end of the insertion tube 12 that enters the patient's body). When the other end of the insertion tube 12 abuts against the positioning retaining ring 213, the nesting is in place. Through the setting of the positioning retaining ring 213, it plays a role of quickly positioning during the nesting process, avoiding repeatedly confirming whether the nesting reaches the correct depth during nesting, and improving the quickness and accuracy of the nesting process. As an implementable manner, a silica gel pad for increasing the friction is provided on the inner wall of the mounting ring 21 to improve the nesting firmness between the mounting ring 21 and the insertion tube 12 and prevent it from falling off during use.

[0059] In some possible embodiments, a spring return rotating shaft is provided at the rotating connection between the first clamping block 222 and the connecting block 221, and one end of the second adjusting wire 42 is connected to one end of the spring return rotating shaft, so that when the second adjusting wire 42 is pulled, the spring return rotating shaft is driven to rotate.

[0060] Specifically, through the setting of the spring return rotating shaft, the first clamping block 222 is subjected to a return pulling force for resetting, so that when the second adjusting wire 42 is unloaded, the first clamping block 222 can directly rotate and reset to the initial position. At the same time, the rotating connection between the first clamping block 222 and the second clamping block 223 is also set as a spring return rotating shaft, so that when the third adjusting wire 43 is unloaded, the second clamping block 223 can directly rotate and reset to the initial position.

[0061] In some possible embodiments, the proximal operating portion further includes a fixing sleeve 31. The fixing sleeve 31 has a semi-enclosed annular structure and is sleeved on the operating handle 11. An adjusting portion 32 is provided on one side of the fixing sleeve 31; a second through hole is opened at the bottom of the adjusting portion 32, and the other end of the converging section passes through the second through hole and is connected to the adjusting portion 32.

[0062] Specifically, the proximal operating portion further includes a fixing sleeve 31. The fixing sleeve 31 has a semi-enclosed annular structure, which is convenient for quickly fixing on the operating handle of any endoscope 1 and is convenient for installation and disassembly.

[0063] In some possible embodiments, the adjusting portion 32 is provided with three knobs; the other ends of the first adjusting wire 41, the second adjusting wire 42, and the third adjusting wire 43 are respectively connected to the three knobs.

[0064] Specifically, as Figure 1 shown, the adjusting portion 32 is provided with three knobs, and the three knobs are respectively connected to the first adjusting wire 41, the second adjusting wire 42, and the third adjusting wire 43.

[0065] In addition, since the connecting block 221 will drive the first clamping block 222 and the second clamping block 223 to slide synchronously when moving, when the first adjusting wire 41 is rotated, the second adjusting wire 42 and the third adjusting wire 43 should also be rotated simultaneously, and the adjustment amounts of the second adjusting wire 42 and the third adjusting wire 43 should be consistent with the adjustment amount of the first adjusting wire 41, so as to avoid the connecting block 221, the first clamping block 222 and the second clamping block 223 being restricted and jammed with each other due to inconsistent pulling lengths of the first adjusting wire 41, the second adjusting wire 42 and the third adjusting wire 43, or being wound and squeezed with each other due to inconsistent exposed wire lengths of the first adjusting wire 41, the second adjusting wire 42 and the third adjusting wire 43; at the same time, the first clamping block 222 and the second clamping block 223 will not affect the position of the connecting block 221 during the rotation process; therefore, the knob connected to the connecting block 221 should drive the other two knobs to rotate simultaneously when rotating, and the other two knobs can be rotated independently; therefore, as a feasible way, the knob connected to the first adjusting wire 41 is used as the main knob, and the knobs connected to the second adjusting wire 42 and the third adjusting wire 43 are used as slave knobs. The main knob is connected to a central gear, and the central gear meshes with the gears of the two slave knobs. When the main knob is rotated, the central gear drives the gears of the slave knobs to achieve synchronous rotation; the gears of the slave knobs are designed to be able to rotate freely, and when the slave knobs are rotated independently, the gears will not drive the central gear; or, as another feasible way, the knob connected to the first adjusting wire 41 is used as the main knob, and the knobs connected to the second adjusting wire 42 and the third adjusting wire 43 are used as slave knobs, and a clutch is installed on the shaft of each slave knob; when the main knob is rotated, the clutch is locked, and the slave knobs rotate synchronously with the main knob; when the slave knobs are rotated independently, the clutch is released, and the slave knobs rotate independently. The above are two feasible ways, and other knob structures that can achieve the same function can be applied.

[0066] In some possible implementation manners, a protective sleeve 44 is sleeved outside the converging section; the first clamping block 222 and the second clamping block 223 rotate relative to each other in a first direction, and the connecting block 221 and the first clamping block 222 rotate relative to each other in a second direction; the first direction is perpendicular to the second direction.

[0067] Specifically, as shown in the figure, a protective sleeve 44 is sleeved outside the converging section, which is used to protect, restrain and keep the positions of the first adjusting wire 41, the second adjusting wire 42 and the third adjusting wire 43 consistent, and avoid the first adjusting wire 41, the second adjusting wire 42 and the third adjusting wire 43 being scratched by the outside during the adjustment process; at the same time, the protective sleeve 44 is made of a soft material and is easy to twist.

[0068] Finally, it should be noted that the above embodiments are only specific embodiments of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting it. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that any person skilled in the art within the technical scope disclosed by the present invention can still modify the technical solutions recorded in the foregoing embodiments, or can easily conceive of changes, or make equivalent replacements for some of the technical features; and these modifications, changes or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

[0069] Although the embodiments of the present invention have been disclosed as above, it is not limited to only the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to specific details and the examples shown and described herein.

Claims

1. A mucosal traction device for endoscopic surgery, the endoscope (1) comprising an operating handle (11) and an insertion tube (12), one end of the insertion tube (12) being connected to the operating handle (11), and a forceps opening (121) being provided through the interior of the insertion tube (12), characterized in that: The mucosal traction device comprises: The distal traction part (2) comprises a mounting ring (21) and a traction member (22), wherein the mounting ring (21) is sleeved on the other end of the insertion tube (12); a mounting groove (211) is provided inside the mounting ring (21); the traction member (22) comprises a connecting block (221), a first clamping block (222) and a second clamping block (223), wherein one end of the connecting block (221) is rotatably connected to one end of the first clamping block (222), and the second clamping block (223) is arranged adjacent to one side of the first clamping block (222), and one end of the second clamping block (223) is rotatably connected to the first clamping block (222). The connecting block (221), the first clamping block (222) and the second clamping block (223) are all located inside the mounting groove (211); the other end of the connecting block (221) is connected to the top of the mounting groove (211) through a spring; the two sides of the connecting block (221) are slidably connected to the two sides of the mounting groove (211); the first clamping block (222) and the second clamping block (223) are arranged near the outlet end of the mounting groove (211); the mounting ring (21) is also provided with a first through hole (212), and the first through hole (212) is connected to the mounting groove (211); A proximal operating portion (3), wherein the proximal operating portion (3) is sleeved on the operating handle (11); A connecting lead (4), the connecting lead (4) comprises a first adjusting line (41), a second adjusting line (42) and a third adjusting line (43), one end of the first adjusting line (41) is connected to the connecting block (221), one end of the second adjusting line (42) is connected to the first clamping block (222), and one end of the third adjusting line (43) is connected to the second clamping block (223); the other end of the first adjusting line (41), the other end of the second adjusting line (42) and the other end of the second adjusting line (42) all pass through the first through hole (212) out of the mounting ring (21), and pass through the clamp opening (121) to be connected to the proximal operating part (3).

2. The mucosal traction device according to claim 1, characterized in that: Slide blocks (2211) are provided on both sides of the connection block (221), slide grooves (2111) are provided on both sides of the installation groove (211), and the two slide blocks (2211) are respectively arranged in the two slide grooves (2111) for sliding connection; the first through hole (212) is connected to one of the slide grooves (2111), and one end of the first adjustment line (41) is connected to the slide block (2211) on the same side of the first through hole (212).

3. The mucosal traction device according to claim 2, characterized in that: A wire guide groove (2212) is provided inside the connecting block (221), and the other end of the second adjusting wire (42) and the other end of the third adjusting wire (43) both pass through the wire guide groove (2212) and merge with the first adjusting wire (41) to form a merged section, and the merged section is arranged in the slide groove (2111) close to the first through hole (212); the other end of the merged section passes through the first through hole (212) to pass out of the mounting ring (21), and passes through the clamp opening (121) to be connected with the proximal operating part (3).

4. The mucosal traction device according to claim 3, characterized in that: A positioning retaining ring (213) is provided at the front end of the mounting ring (21); the inner diameter of the positioning retaining ring (213) is smaller than the inner diameter of the mounting ring (21); when the mounting ring (21) is sleeved on the insertion tube (12), the other end of the insertion tube (12) abuts against the positioning retaining ring (213); and the first through hole (212) is formed on the positioning retaining ring (213).

5. The mucosal traction device according to claim 4, characterized in that: A spring return shaft is provided at the rotation connection between the first clamping block (222) and the connecting block (221), and one end of the second adjustment line (42) is connected to one end of the spring return shaft, so that when the second adjustment line (42) is pulled, the spring return shaft is driven to rotate.

6. The mucosal traction device according to claim 5, characterized in that: The proximal operating portion further comprises a fixing sleeve (31), the fixing sleeve (31) being in a semi-enclosed annular structure, the fixing sleeve (31) being sleeved on the operating handle (11), and an adjusting portion (32) being arranged on one side of the fixing sleeve (31); a second through hole is provided at the bottom of the adjusting portion (32), and the other end of the confluence section passes through the second through hole and is connected to the adjusting portion (32).

7. The mucosal traction device according to claim 6, characterized in that: The adjustment portion (32) is provided with three knobs; the other end of the first adjustment line (41), the other end of the second adjustment line (42) and the other end of the third adjustment line (43) are respectively connected to the three knobs.

8. The mucosal traction device according to claim 7, characterized in that: The outer cover of the merging section is provided with a protective cover (44).

9. The mucosal traction device according to claim 8, characterized in that: The first clamping block (222) and the second clamping block (223) rotate relative to each other along a first direction, and the connecting block (221) and the first clamping block (222) rotate relative to each other along a second direction; the first direction and the second direction are perpendicular to each other.

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