CN111643156A

CN111643156A - Binding clip subassembly and pull pincers

Info

Publication number: CN111643156A
Application number: CN202010546535.4A
Authority: CN
Inventors: 孙思予; 王晟; 韦建宇; 沈正华; 冯明浩; 张凯; 李常青
Original assignee: Shengjing Hospital of China Medical University; Micro Tech Nanjing Co Ltd
Current assignee: Shengjing Hospital of China Medical University; Micro Tech Nanjing Co Ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2020-09-11

Abstract

The disclosure relates to the field of medical equipment, in particular to a binding clip assembly and a traction clamp. A binding clip subassembly, binding clip subassembly include cable, outer tube, lock sleeve and activity pincers. The stay cable can movably shuttle in the outer tube; the locking sleeve is movably sleeved outside the outer pipe; the movable pliers are positioned at the far end of the outer pipe, and the far end of the inhaul cable is connected with the movable pliers. The pull cable is configured to move relative to the outer pipe under the action of external force so as to drive the movable pliers to open or close; the locking sleeve is configured to move towards the far end close to the outer pipe relative to the outer pipe under the action of external force so as to sleeve the movable clamp and enable the movable clamp to keep a closed state. The forceps head assembly can clamp and draw pathological tissues and assist a doctor in expanding the operation visual field, so that the operation time is reduced.

Description

Binding clip subassembly and pull pincers

Technical Field

The disclosure relates to the field of medical equipment, in particular to a binding clip assembly and a traction clamp.

Background

EMR (EMR) treatment of early gastric cancer was used clinically in japan at the earliest, and before its introduction into japan, gastrectomy was the only treatment for early gastric cancer, and this treatment has been widely used at present. Endoscopic mucosal dissection (ESD) refers to the dissection of mucosa from the submucosa directly by using an improved needle knife under an endoscope, and is evolved from the EMR of mucosal resection, so that the complete resection rate and the safety are high, the indications of resection of early cancer of digestive tract and other tumors are expanded, and the endoscopic mucosal dissection is gradually an accepted minimally invasive surgical treatment mode.

Both ESD and EMR realize the excision of the lesion by using a common single-channel endoscope, and avoid the pain of open surgery and the excision of organs. EMR has the disadvantages that this technique does not allow large lesions to be excised in one piece, that the removed specimens of the fragmented shape are difficult to perform in a detailed pathological analysis, that the staging of the tumor is ambiguous, and that there is a high risk of tumor recurrence. Compared with the endoscope treatment methods such as laparotomy and EMR, the ESD has the advantages that 1, the wound is small, 2, a patient can receive multiple treatments at multiple positions, 3, a doctor can obtain a complete histopathology specimen for analysis, and 4, the resection rate of tumors with large areas, irregular shapes or combined ulcer and scar is higher than 96%, so that the recurrence probability is reduced.

However, ESD has longer operation time, higher risk and more difficult operation compared with EMR. The operation time of EMR is about 20 minutes, while the operation time of most ESD is 60-90 minutes, and complications such as bleeding, perforation, stenosis and postoperative infection exist, so that the popularization and the application of EMR are influenced more widely. EMR surgery rarely bleeds, but during ESD procedures, the field of view is covered with blood, constantly bleeding stopped and flushed, with little attention. The main steps of the ESD operation are as follows: marking, submucosal injection, edge dissection, exfoliation, and wound treatment. For some lesions in sites with ESD treatment difficulty, repeated submucosal injection is usually adopted to provide a limited surgical field for subsequent stripping operation, but the repeated injection can prolong the surgical time and increase the risks of bleeding and perforation. Therefore, how to obtain a good "surgical field" in the surgery becomes a key to solve the above problems, and various researchers strive to find a method for providing a good field for the surgery, and performing safe and accurate cutting and peeling operations.

Disclosure of Invention

An object of the present disclosure is to provide a forceps head assembly and a traction forceps, which can clamp and pull a diseased tissue, assist a surgeon in enlarging a surgical field, thereby reducing a surgical time.

The embodiment of the disclosure is realized by the following steps:

in a first aspect, an embodiment of the present disclosure provides a forcep head assembly, where the forcep head assembly includes a cable, an outer tube, a lock sleeve, and a movable forcep;

the stay cable can movably shuttle in the outer tube; the locking sleeve is movably sleeved outside the outer pipe; the movable pliers are positioned at the far end of the outer pipe, and the far end of the inhaul cable is connected with the movable pliers;

the pull cable is configured to move relative to the outer pipe under the action of external force so as to drive the movable pliers to open or close; the locking sleeve is configured to move towards the far end close to the outer pipe relative to the outer pipe under the action of external force so as to sleeve the movable clamp and enable the movable clamp to keep a closed state.

In an alternative embodiment, the forcep head assembly further comprises a movable sleeve;

the locking sleeve and the movable sleeve are sequentially and movably sleeved outside the outer pipe along the direction from the far end of the outer pipe to the near end of the outer pipe;

the distal end of the movable sleeve abuts the proximal end of the locking sleeve, and the movable sleeve is configured to urge the locking sleeve to move relative to the locking sleeve under the influence of an external force.

In an alternative embodiment, the bit assembly further comprises a cannula handle disposed outside the outer tube and coupled to the proximal end of the active cannula.

In an alternative embodiment, the cannula handle is fixedly attached to the proximal end of the movable cannula.

In a second aspect, the disclosed embodiments provide a pair of traction tongs, which includes an operating portion and the tong head assembly;

the operating part is connected with the inhaul cable and is configured to drive the inhaul cable to move relative to the outer pipe under the action of external force so as to drive the movable pliers to open or close; or the inhaul cable is driven to rotate around the central axis of the inhaul cable under the action of external force so as to drive the movable pliers to rotate relative to the outer pipe.

In an alternative embodiment, the operating portion includes a handle and a movable portion;

along the preset direction, a first channel and a second channel are arranged on the handle; the proximal end of the inhaul cable passes through the first channel and then extends into the second channel, and the movable part is movably matched with the second channel and detachably connected with the proximal end of the inhaul cable;

the movable portion is configured to drive the cable to move or rotate relative to the handle under the action of an external force.

In an alternative embodiment, the operation portion further includes a first connector and a second connector;

the first connecting piece is connected with the near end of the inhaul cable, the second connecting piece is connected with the movable portion, and the first connecting piece is in threaded connection with the second connecting piece.

In an alternative embodiment, the outer diameter of the first connector is smaller than the inner diameter of the active cannula.

In an alternative embodiment, the first connector is laser welded to the proximal end of the cable.

In an alternative embodiment, the operating portion further comprises a locking joint, the locking joint being threadedly connected to the distal end of the handle;

the locking joint is configured to rotate relative to the handle under an external force and adjust an inner diameter of the first channel at a distal end of the handle.

In an alternative embodiment, the distal end of the handle is provided with a conical joint, and the inner circumferential surface of the locking joint is a conical surface matched with the conical joint;

the taper joint comprises at least two connecting parts, and a space is arranged between any two adjacent connecting parts.

The beneficial effects of the disclosed embodiment include:

the binding clip subassembly includes cable, outer tube, lock sleeve and activity pincers. Wherein, the cable can move for the outer tube under the effect of external force to drive movable vice and open or close, thereby can drive movable vice action through the motion of cable, in order to press from both sides tight pathological change tissue. The locking sleeve is configured under the action of external force and can move towards the far end close to the outer tube relative to the outer tube, and the closing state of the movable forceps can be kept in a mode of sleeving the movable forceps, so that the phenomenon that the clamping effect between the movable forceps and the pathological tissue disappears in the process of drawing the pathological tissue through the outer tube can be avoided; meanwhile, the movable pliers in the closed state can be prevented from being converted to the open state due to misoperation on the inhaul cable; therefore, in the process of drawing the pathological tissue, the clamping force of the movable forceps on the pathological tissue is kept, the pathological tissue can be drawn, the operation visual field is improved, the operation difficulty of a doctor is reduced, and the operation time is shortened.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present disclosure and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings may be obtained from the drawings without inventive effort.

FIG. 1 is a schematic structural view of a forcep head assembly according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of the jawarm assembly in an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of the jawarm assembly in a closed position in accordance with an embodiment of the present disclosure;

FIG. 4 is a cross-sectional view of the jawarm assembly in an open position in accordance with an embodiment of the present disclosure;

FIG. 5 is a cross-sectional view of a pulling grip in a closed position in an embodiment of the present disclosure;

FIG. 6 is a cross-sectional view of a pulling grip in an open position in an embodiment of the present disclosure;

FIG. 7 is an enlarged view at VII in FIG. 5;

fig. 8 is an enlarged view of fig. 6 at viii.

The diagram is 100-tong head assembly; 110-a pull cable; 120-an outer tube; 130-a locking sleeve; 140-movable pliers; 150-an active cannula; 160-cannula handle; 141-upper binding clip; 142-lower jaw; 143-binding clip connecting hinge; 200-traction forceps; 210-an operating part; 211-a handle; 212-a mobile part; 213 — a first channel; 214-a second channel; 215-a first connector; 216-a second connector; 217-locking joint; 218-a taper joint; 219-connecting part.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. The components of the embodiments of the present disclosure, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present disclosure, presented in the figures, is not intended to limit the scope of the claimed disclosure, but is merely representative of selected embodiments of the disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the disclosed products are conventionally placed in use, and are only for convenience in describing and simplifying the present disclosure, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present disclosure. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present disclosure, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.

Referring to fig. 1-4, fig. 1 and 2 show the structure of a forceps head assembly 100 of an embodiment of the present disclosure, which includes a pulling cable 110, an outer tube 120, a locking sleeve 130, a movable forceps 140, a movable sleeve 150, and a sleeve handle 160; wherein, the pulling cable 110 can movably shuttle in the outer tube 120; the movable clamp 140 is located at the distal end of the outer tube 120, and the distal end of the pull cable 110 is connected with the movable clamp 140; along the direction from the distal end of the outer tube 120 to the proximal end of the outer tube 120, the locking sleeve 130 and the movable sleeve 150 are sequentially movably sleeved outside the outer tube 120, and the distal end of the movable sleeve 150 abuts against the proximal end of the locking sleeve 130; the sleeve handle 160 is sleeved outside the outer tube 120 and is connected with the proximal end of the movable sleeve 150;

fig. 3 and 4 illustrate the structure of the bit assembly in the disclosed embodiment, the bit assembly 100 includes a pulling cable 110, an outer tube 120, a locking sleeve 130, a movable clamp 140, and a movable sleeve 150; wherein, the pulling cable 110 can movably shuttle in the outer tube 120; the movable clamp 140 is located at the distal end of the outer tube 120, and the distal end of the pull cable 110 is connected with the movable clamp 140; along the direction from the distal end of the outer tube 120 to the proximal end of the outer tube 120, the locking sleeve 130 and the movable sleeve 150 are sequentially movably sleeved outside the outer tube 120, and the distal end of the movable sleeve 150 abuts against the proximal end of the locking sleeve 130; the movable clamp 140 comprises an upper clamp head 141, a lower clamp head 142 and a clamp head connecting hinge 143, the upper clamp head 141 is hinged with the lower clamp head 142, the clamp head connecting hinge 143 is hinged with the upper clamp head 141 and the lower clamp head 142, and the clamp head connecting hinge 143 is connected with the cable 110;

the present embodiment provides a forceps head assembly 100. the forceps head assembly 100 includes a pulling cable 110, an outer tube 120, a locking sleeve 130 and a movable forceps 140;

the pulling cable 110 can move and shuttle in the outer tube 120; the locking sleeve 130 is movably sleeved outside the outer tube 120; the movable clamp 140 is located at the distal end of the outer tube 120, and the distal end of the pull cable 110 is connected with the movable clamp 140;

referring to fig. 3-4, fig. 3 shows the jawarm assembly 100 in a closed state, and fig. 4 shows the jawarm assembly 100 in an open state; the pulling cable 110 is configured to move relative to the outer tube 120 under the action of external force to drive the movable clamp 140 to open or close; the locking sleeve 130 is configured to move relative to the outer tube 120 toward the distal end near the outer tube 120 under the action of an external force to sleeve the movable clamp 140 and maintain the movable clamp 140 in a closed state.

It should be noted that, in this embodiment, when the movable clamp 140 is disposed, the movable clamp 140 includes an upper clamp 141, a lower clamp 142 and a clamp connection hinge 143, the upper clamp 141 is hinged to the lower clamp 142, the clamp connection hinge 143 is hinged to the upper clamp 141 and the lower clamp 142, and the clamp connection hinge 143 is connected to the cable 110, so that the movement of the cable 110 relative to the outer tube 120 can drive the clamp connection hinge 143 to move, and further drive the upper clamp 141 and the lower clamp 142 to rotate around the hinged portion, so that the upper clamp 141 and the lower clamp 142 approach each other to close the movable clamp 140, or the upper clamp 141 and the lower clamp 142 move away from each other to open the movable clamp 140. Further, in other embodiments of the present disclosure, the movable clamp 140 may also be configured as in the prior art.

Throughout, the terms "distal", "proximal", etc. are intended to be used herein for the purpose of better understanding of the present disclosure, and are not intended to be limiting of the present disclosure. Generally, during use of the jawarm assembly 100, the forward end portion of the jawarm assembly 100 (in the relative position of fig. 1, the left end of the jawarm assembly 100) extends into the body, while the rearward end portion of the jawarm assembly 100 (in the relative position of fig. 1, the right end of the jawarm assembly 100) is accessible to a medical practitioner. Thus, "distal" may be understood as a part or component that is relatively close to the anterior portion of the body, and "proximal" may be understood as a part or component that is relatively close to the posterior portion of the body. Of course, when it is not explicitly stated which part or component is "proximal" or "distal", the default designation will be to the proximal or distal end of the entire jawarm assembly 100.

Referring to fig. 1-4, the working principle of the binding clip assembly 100 is as follows:

the bit assembly 100 includes a pull cable 110, an outer tube 120, a locking sleeve 130, and a movable clamp 140. The pulling cable 110 can move relative to the outer tube 120 under the action of external force, and drives the movable clamp 140 to open or close, so that the movable clamp 140 can be driven to move through the movement of the pulling cable 110 to clamp the lesion tissue. The locking sleeve 130 is configured to move towards the far end close to the outer tube 120 relative to the outer tube 120 under the action of external force, and can keep the closing state of the movable forceps 140 by sleeving the movable forceps 140, so that the clamping action between the movable forceps 140 and the lesion tissue can be prevented from disappearing in the process of pulling the lesion tissue through the outer tube 120; meanwhile, the movable clamp 140 in the closed state can be prevented from being switched to the open state due to the misoperation of the stay wire 110; therefore, in the process of drawing the pathological tissue, the clamping force of the movable clamp 140 on the pathological tissue can be kept, the pathological tissue can be drawn, the operation visual field can be improved, the operation difficulty of a doctor can be reduced, and the operation time can be shortened.

Referring to fig. 1 and 2, in the present embodiment, the forceps head assembly 100 further includes a movable sleeve 150. Wherein, the locking sleeve 130 and the movable sleeve 150 are sequentially movably sleeved outside the outer tube 120 along the direction from the distal end of the outer tube 120 to the proximal end of the outer tube 120; and the distal end of the active sleeve 150 abuts the proximal end of the locking sleeve 130, the active sleeve 150 is configured to urge the locking sleeve 130 to move relative to the outer tube 120 under the influence of an external force. It should be noted that, along the direction from the distal end of the outer tube 120 to the proximal end of the outer tube 120, the locking sleeve 130 and the movable sleeve 150 are sequentially disposed, and the movable sleeve 150 is configured to push the locking sleeve 130 to move relative to the locking sleeve 130 under the action of an external force, such a disposition can push the locking sleeve 130 to move relative to the outer tube 120 through the movement of the movable sleeve 150, and further can enable the locking sleeve 130 to move to the position where the movable clamp 140 is disposed, meanwhile, because there is no connection relationship between the locking sleeve 130 and the movable sleeve 150, that is, the movable sleeve 150 can push the locking sleeve 130 to move towards the distal end of the outer tube 120, but cannot drive the locking sleeve 130 to move towards the proximal end of the outer tube 120. Therefore, after the locking sleeve 130 is sleeved outside the movable clamp 140 under the action of the movable sleeve 150, the movable clamp 140 can keep a state of being sleeved on the movable clamp 140.

In order to facilitate driving the movable sleeve 150 to move, the forceps head assembly 100 further includes a sleeve handle 160, the sleeve handle 160 is disposed on the outer tube 120 and connected to the proximal end of the movable sleeve 150, and the sleeve handle 160 is configured to be held by an operator, so that the operator can push the locking sleeve 130 to move or drive the movable sleeve 150 to separate from the outer tube 120.

When cannula handle 160 is installed, cannula handle 160 may be fixedly attached to the proximal end of active cannula 150 when cannula handle 160 and active cannula 150 are connected, as cannula handle 160 may be made of plastic.

Secondly, when the movable clamp 140 is connected with the cable 110, the movable clamp 140 can be driven to open or close by the movement of the cable 110, so that the stability of the connection between the movable clamp 140 and the cable 110 needs to be improved during the use process, and the movable clamp 140 is connected with the cable 110 by laser welding.

Referring to fig. 1-8, fig. 5 and 6 show the structure of a pulling tong in an embodiment of the present disclosure, the pulling tong 200 includes an operating portion 210 and a tong head assembly 100; the operating part 210 comprises a handle 211, a movable part 212 and a locking joint 217, the movable part 212 is movably connected with the handle 211, and the locking joint 217 is in threaded connection with the far end of the handle 211; the jawarm assembly 100 includes a movable jaw 140 disposed at a distal end of the jawarm assembly 100;

fig. 7 shows the structure of the handle in the embodiment of the present disclosure, the handle 211 is provided with a first channel 213 and a second channel 214; the proximal end of the pull cable 110 extends into the second channel 214 after passing through the first channel 213 and is connected with the first connecting piece 215; the movable portion 212 is movably engaged with the second channel 214 and connected with the second connector 216; the first connector 215 is detachably connected with the second connector 216;

fig. 8 shows the structure of the handle in the embodiment of the present disclosure, the distal end of the handle 211 is provided with a taper joint 218, the taper joint 218 includes at least two connecting portions 219, and a space is provided between any two adjacent connecting portions 219; the locking joint 217 is in threaded connection with the distal end of the handle 211, and the inner circumferential surface of the locking joint 217 is a conical surface matched with the conical joint 218;

based on the above-mentioned binding clip assembly 100, the present disclosure also discloses a pulling clamp 200, the pulling clamp 200 includes an operating portion 210 and the above-mentioned binding clip assembly 100.

The operating portion 210 is connected to the cable 110, and the operating portion 210 is configured to drive the cable 110 to move relative to the outer tube 120 under the action of an external force, so as to drive the movable clamp 140 to open or close; or the pulling cable 110 is driven to rotate around the central axis of the pulling cable 110 under the action of external force, so as to drive the movable clamp 140 to rotate relative to the outer tube 120.

Throughout, the terms "distal", "proximal", etc. are intended to be used herein for the purpose of better understanding of the present disclosure, and are not intended to be limiting of the present disclosure. Generally, during use of the jaw assembly 100, the front end portion of the pulling forceps 200 (referred to as the upper end of the pulling forceps 200 in the relative position of fig. 5) will extend into the body, while the rear end portion of the pulling forceps 200 (referred to as the lower end of the pulling forceps 200 in the relative position of fig. 1) is accessible to the medical practitioner. Thus, "distal" may be understood as a part or component that is relatively close to the anterior portion of the body, and "proximal" may be understood as a part or component that is relatively close to the posterior portion of the body. Of course, when it is not explicitly indicated which part or component is "proximal" or "distal", the default designation is the proximal or distal end of the entire pulling forceps 200.

Referring to fig. 1-8, the operation of the pulling forceps 200 is as follows:

during the operation, the position of the movable clamp 140 relative to the lesion tissue is first adjusted, that is, the movable clamp 140 is located at the correct position relative to the lesion tissue by the movement of the outer tube 120 and the rotation of the movable clamp 140 relative to the outer tube 120 driven by the operation portion 210; then, the operation part 210 drives the pulling cable 110 to move relative to the outer tube 120, so as to drive the movable clamp 140 to clamp the lesion tissue; subsequently, the locking sleeve 130 is pushed by the sleeve handle 160 to move toward the distal end of the outer tube 120 with respect to the outer tube 120 and engage with the movable jaw 140, so that the movable jaw 140 maintains a closed state of clamping the lesion tissue.

After the movable clamp 140 clamps the lesion tissue and the locking sleeve 130 and the movable clamp 140 are in a closed state, the connection between the operating part 210 and the pulling cable 110 is released, and the movable sleeve 150 is removed from the outer tube 120, so that the movable clamp 140, the locking sleeve 130 and the outer tube 120 are positioned in the patient, and then the lesion tissue can be pulled by pulling the outer tube 120, thereby helping the surgeon to improve the surgical field and reduce the surgical time.

In the course of performing the operation, a plurality of the above-described traction forceps 200 may be provided to adjust the position of the lesion tissue in multiple directions, thereby adjusting the operation field and shortening the operation time.

When the operation portion 210 is provided, the operation portion 210 includes a handle 211 and a movable portion 212; and along a preset direction (the direction indicated by arrow a in fig. 5 and 6), the handle 211 is provided with a first channel 213 and a second channel 214; the proximal end of the pulling cable 110 passes through the first channel 213 and then extends into the second channel 214, and the movable part 212 is movably matched with the second channel 214 and detachably connected with the proximal end of the pulling cable 110; the movable portion 212 is configured to drive the cable 110 to move or rotate relative to the handle 211 under the action of an external force. Therefore, the movable part 212 is driven by external force to move relative to the second channel 214, so as to drive the pull cable 110 to drive the movable clamp 140 to open or close; and the movable portion 212 is driven to rotate by an external force, so as to drive the movable clamp 140 to rotate relative to the outer tube 120. Thereby enabling adjustment of the relative position of the movable clamp 140. In the present embodiment, the predetermined direction coincides with the central axis of the operation unit 210.

Secondly, when the first channel 213 and the second channel 214 are provided, the first channel 213 is used for the cable 110 to shuttle, and the second channel 214 is used for the movable portion 212 to move and rotate, so the first channel 213 has an inner cavity corresponding to the cable 110, and similarly, the second channel 214 has an area for the movable portion 212 to move, thereby the size of the first channel 213 can be smaller than that of the second channel 214, and such an arrangement can enable the movable portion 212 to move only in the second channel 214, so the stroke of the movable portion 212 can be limited by adjusting the size of the second channel 214.

In addition, when the movable portion 212 is provided, in the present embodiment, the movement of the movable portion 212 in the preset direction toward the distal end of the operating portion 210 can drive the cable 110 to move toward the distal end of the outer tube 120, and such movement can cause the movable jaw 140 to open; similarly, when the movable portion 212 moves in the predetermined direction toward the proximal end of the operating portion 210 to drive the cable 110 to move toward the proximal end of the outer tube 120, such movement can cause the movable clamp 140 to close. In other embodiments of the present disclosure, other arrangements may be adopted, such that the movement of the movable portion 212 in the preset direction toward the distal end of the operation portion 210 drives the cable 110 toward the proximal end of the outer tube 120, and drives the movable clamp 140 to close; and the movement of the movable portion 212 in the preset direction toward the proximal end of the operation portion 210 drives the cable 110 toward the distal end of the outer tube 120 and drives the movable jaw 140 to open.

Referring to fig. 7, in the present embodiment, the operation portion 210 further includes a first connection member 215 and a second connection member 216; and the first connecting member 215 is connected to the proximal end of the cable 110, the second connecting member 216 is connected to the movable portion 212, and the first connecting member 215 and the second connecting member 216 are threadedly connected. Thus, the cable 110 and the movable portion 212 can be connected by the first link 215 and the second link 216, and since the second link 216 and the second link 216 are screwed, when the connection between the movable portion 212 and the cable 110 is released, the second link 216 connected to the movable portion 212 is rotated relative to the first link 215 connected to the cable 110 by an external force, so that the first link 215 and the second link 216 can be separated, and the connection between the movable portion 212 and the cable 110 can be released.

Meanwhile, when the connection relationship between the movable portion 212 and the cable 110 is released, the second connecting member 216 connected to the movable portion 212 needs to rotate relative to the first connecting member 215 connected to the cable 110, so as to avoid the cable 110 and the first connecting member 215 rotating synchronously with the movable portion 212 when the movable portion 212 rotates, the operating portion 210 further includes a locking joint 217, the locking joint 217 is in threaded connection with the distal end of the handle 211, and the locking joint 217 is used for locking the outer tube 120 and the cable 110 at the distal end of the handle 211 to limit the rotation of the outer tube 120 and the cable 110, so as to ensure that the rotation of the movable portion 212 does not drive the cable 110 to rotate synchronously.

Specifically, referring to fig. 8, in order to enable the locking joint 217 to have a rotation state for locking the cable 110 and the outer tube 120, and a movable state of the cable 110 and the outer tube 120 relative to the handle 211, the locking joint 217 is configured to be capable of rotating relative to the handle 211 under the action of an external force, and adjust the size of the inner diameter of the first channel 213 at the distal end of the handle 211, a tapered joint 218 is provided at the distal end of the handle 211, and the inner circumferential surface of the locking joint 217 is a tapered surface matched with the tapered joint 218; the taper joint 218 includes at least two connecting portions 219, and a space is provided between any two adjacent connecting portions 219. When the movement of the outer tube 120 and the cable 110 needs to be limited, the locking joint 217 is rotated to enable the locking joint 217 to move towards the proximal end of the handle 211, and after the inner circumferential surface of the locking joint 217 is matched with the conical joint 218, the interval between the connecting parts 219 of the conical joint 218 is gradually reduced, so that the inner diameter of the first channel 213 is reduced, the inner wall of the first channel 213 at the distal end of the handle 211 is clamped with the outer tube 120, and meanwhile, the cable 110 is clamped with the inner wall of the outer tube 120, so that the rotation of the cable 110 and the outer tube 120 is limited; similarly, when the outer tube 120 and the cable 110 need to be able to move relative to the handle 211, the locking joint 217 is rotated to move the locking joint 217 toward the distal end of the handle 211, and after the inner circumferential surface of the locking joint 217 is disengaged from the tapered joint 218, the interval between the connecting portions 219 of the tapered joint 218 gradually returns to the initial interval, so that the inner diameter of the first passage 213 becomes larger, thereby movably engaging the inner wall of the first passage 213 at the distal end of the handle 211 with the outer tube 120, and movably engaging the cable 110 with the inner wall of the outer tube 120, thereby canceling the restriction effect on the cable 110 and the outer tube 120.

In addition, when the cable 110 is connected with the first connecting member 215, in order to improve the stability of the connection between the first connecting member 215 and the cable 110, the first connecting member 215 may be connected with the proximal end of the cable 110 by laser welding.

Referring to fig. 1-8, in summary, the operation steps of the pulling forceps 200 are as follows:

first, the position of the movable jaw 140 with respect to the lesion tissue is adjusted so that the movable jaw 140 is in the correct position with respect to the lesion tissue; if the locking joint 217 is in a locked state, the movement of the outer tube 120 relative to the handle 211 is limited, the handle 211 drives the outer tube 120 to move relative to the movable sleeve 150, so that the position of the movable clamp 140 relative to the movable sleeve 150 can be adjusted, and meanwhile, the handle 211 drives the outer tube 120 to rotate relative to the movable sleeve 150, so that the angle of the movable clamp 140 relative to the movable sleeve 150 can be adjusted. If the movement of the outer tube 120 relative to the handle 211 is not limited by the locking joint 217, the movable portion 212 can drive the cable 110 to rotate, so as to adjust the angle of the movable clamp 140 relative to the movable sleeve 150;

then, the movable jaw 140 is driven to clamp the lesion tissue by the movement of the movable portion 212 in the second channel 214, and after clamping the lesion tissue, the locking sleeve 130 is pushed by the sleeve handle 160 to move towards the distal end of the outer tube 120 relative to the outer tube 120 and to cooperate with the movable jaw 140, so that the movable jaw 140 maintains the closed state of clamping the lesion tissue; it should be noted that, at this time, the movement limitation of the locking joint 217 to the cable 110 and the outer tube 120 needs to be cancelled;

after the movable clamp 140 clamps the lesion tissue and the locking sleeve 130 and the movable clamp 140 can maintain the closed state, the connection relationship between the operating portion 210 and the pulling cable 110 needs to be released, specifically, the locking joint 217 is rotated to lock the outer tube 120 at the distal end of the handle 211, at this time, the movement of the outer tube 120 and the pulling cable 110 is limited, and then the movable portion 212 is rotated to disconnect the first connecting member 215 from the second connecting member 216; rotating the locking joint 217 to remove the locking action of the locking joint 217 on the outer tube 120 and to extend the cable 110 and the first connecting member 215 from the first passage 213, thereby removing the handle 211;

the movable clamp 140, locking sleeve 130, and outer tube 120 are positioned within the patient by moving the cannula handle 160 in a direction toward the proximal end of the outer tube 120, thereby removing the movable cannula 150 and the cannula handle 160. It should be noted that, during the using process, a plurality of traction forceps 200 may be provided, and the operation steps of the plurality of traction forceps 200 are as above, and therefore, are not described herein again. The diseased tissue can then be pulled by pulling the outer tube 120 to help the surgeon improve the surgical field and reduce the surgical time.

Referring to fig. 1-8, based on the above, the traction forceps 200 provided by the present disclosure can be further configured to extract the esophageal stent from the body, which includes the following steps:

controlling the traction forceps 200 to clamp the recovery wire at the far end of the esophageal stent;

first, the movable forceps 140 is inserted into the esophagus by a traction forceps 200 and moved to the distal end of the esophageal stent, and then the position of the movable forceps 140 relative to the recovery wire at the distal end of the esophageal stent is adjusted so that the movable forceps 140 is in the correct position relative to the recovery wire at the distal end of the esophageal stent; if the locking joint 217 is in a locked state, the movement of the outer tube 120 relative to the handle 211 is limited, the handle 211 drives the outer tube 120 to move relative to the movable sleeve 150, so that the position of the movable clamp 140 relative to the movable sleeve 150 can be adjusted, and meanwhile, the handle 211 drives the outer tube 120 to rotate relative to the movable sleeve 150, so that the angle of the movable clamp 140 relative to the movable sleeve 150 can be adjusted. If the movement of the outer tube 120 relative to the handle 211 is not limited by the locking joint 217, the movable portion 212 can drive the cable 110 to rotate, so as to adjust the angle of the movable clamp 140 relative to the movable sleeve 150;

then, the movable clamp 140 is driven to clamp the recovery wire at the distal end of the esophageal stent by the movement of the movable part 212 in the second channel 214, and after the recovery wire at the distal end of the esophageal stent is clamped, the locking sleeve 130 is pushed by the sleeve handle 160 to move relative to the outer tube 120 towards the distal end of the outer tube 120 and to be engaged with the movable clamp 140, so that the movable clamp 140 maintains the closed state of the recovery wire at the distal end of the esophageal stent; it should be noted that, at this time, the movement limitation of the locking joint 217 to the cable 110 and the outer tube 120 needs to be cancelled;

after the movable clamp 140 clamps the recovery wire at the distal end of the esophageal stent and the locking sleeve 130 and the movable clamp 140 can keep a closed state, the connection relationship between the operating part 210 and the pull cable 110 needs to be released, specifically, the locking joint 217 is rotated to lock the outer tube 120 at the distal end of the handle 211, at this time, the movement of the outer tube 120 and the pull cable 110 is limited, and then the movable part 212 is rotated to disconnect the first connecting piece 215 from the second connecting piece 216; rotating the locking joint 217 to remove the locking action of the locking joint 217 on the outer tube 120 and to extend the cable 110 and the first connecting member 215 from the first passage 213, thereby removing the handle 211;

the movable clamp 140, locking sleeve 130, and outer tube 120 are positioned within the patient by moving the cannula handle 160 in a direction toward the proximal end of the outer tube 120, thereby removing the movable cannula 150 and the cannula handle 160.

Then, the traction forceps 200 are extended into the esophagus and move towards the proximal end of the esophageal stent, and then the traction forceps 200 are controlled to clamp the recovery wire at the proximal end of the esophageal stent; it should be noted that the operation steps of clamping the recovery wire at the proximal end of the esophageal stent are the same as the operation steps of clamping the recovery wire at the distal end of the esophageal stent, and therefore are not described herein again; in addition, the above operation mode can be adopted, the recovery wire at the far end of the esophageal stent is clamped firstly, and then the recovery wire at the near end of the esophageal stent is clamped; or the recovery wire at the near end of the esophageal stent can be clamped firstly and then the recovery wire at the far end of the esophageal stent can be clamped. Second, a plurality of pulling forceps 200 may also be used to clamp the retrieval line at the distal end of the esophageal stent and to clamp the retrieval line at the proximal end of the esophageal stent.

Then, the traction forceps 200 for clamping the recovery wire at the far end of the esophageal stent are driven to move along the direction from the near end to the far end of the esophageal stent, and meanwhile, the traction forceps 200 for clamping the recovery wire at the near end of the esophageal stent are driven to move along the direction from the far end to the near end of the esophageal stent, so that the interval between the recovery wire at the far end of the esophageal stent and the recovery wire at the near end is increased, the esophageal stent is elongated, the outer diameter of the elongated esophageal stent is smaller than the inner diameter of the esophagus, and the esophageal stent can be taken out.

The foregoing is merely exemplary of the present disclosure and is not intended to limit the same, since various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A binding clip assembly, comprising:

the tong head assembly comprises a stay cable, an outer pipe, a locking sleeve and movable tongs;

the pull cable can movably shuttle in the outer tube; the locking sleeve is movably sleeved outside the outer pipe; the movable pliers are positioned at the far end of the outer pipe, and the far end of the inhaul cable is connected with the movable pliers;

the pull cable is configured to move relative to the outer pipe under the action of external force so as to drive the movable clamp to open or close; the locking sleeve is configured to move towards the far end close to the outer pipe relative to the outer pipe under the action of external force so as to sleeve the movable clamp and enable the movable clamp to keep a closed state.

2. The jawarm assembly of claim 1, wherein:

the tong head assembly further comprises a movable sleeve;

the distal end of the movable sleeve is abutted against the proximal end of the locking sleeve, and the movable sleeve is configured to push the locking sleeve to move relative to the locking sleeve under the action of external force.

3. The jawarm assembly of claim 2, wherein:

the forceps head assembly further comprises a sleeve handle, and the sleeve handle is sleeved outside the outer tube and connected with the near end of the movable sleeve.

4. The jawarm assembly of claim 3, wherein:

the sleeve handle is fixedly connected with the near end of the movable sleeve.

5. A traction clamp is characterized in that:

the pulling forceps comprise an operating part and the forceps head assembly as claimed in any one of claims 1 to 4;

the operating part is connected with the inhaul cable and is configured to drive the inhaul cable to move relative to the outer pipe under the action of external force so as to drive the movable clamp to open or close; or the pull cable is driven to rotate around the central axis of the pull cable under the action of external force so as to drive the movable pliers to rotate relative to the outer pipe.

6. Traction forceps according to claim 5, characterized in that:

the operating part comprises a handle and a movable part;

along the preset direction, a first channel and a second channel are formed in the handle; the proximal end of the inhaul cable penetrates through the first channel and then extends into the second channel, and the movable part is movably matched with the second channel and detachably connected with the proximal end of the inhaul cable;

the movable part is configured to drive the inhaul cable to move or rotate relative to the handle under the action of external force.

7. Traction forceps according to claim 6, characterized in that:

the operating part also comprises a first connecting piece and a second connecting piece;

8. Traction forceps according to claim 7, characterized in that:

the outer diameter of the first connecting piece is smaller than the inner diameter of the movable sleeve.

9. Traction forceps according to claim 7, characterized in that:

the first connecting piece is connected with the near end of the inhaul cable in a laser welding mode.

10. Traction forceps according to claim 6, characterized in that:

the operating part also comprises a locking joint which is in threaded connection with the far end of the handle;

the locking joint is configured to rotate relative to the handle under an external force and adjust the first channel inner diameter at the distal end of the handle.

11. Traction forceps according to claim 10, characterized in that:

the distal end of the handle is provided with a conical joint, and the inner circumferential surface of the locking joint is a conical surface matched with the conical joint;

the taper joint at least comprises two connecting parts, and a space is arranged between any two adjacent connecting parts.