CN212661878U - Improved snare - Google Patents
Improved snare Download PDFInfo
- Publication number
- CN212661878U CN212661878U CN201922457019.XU CN201922457019U CN212661878U CN 212661878 U CN212661878 U CN 212661878U CN 201922457019 U CN201922457019 U CN 201922457019U CN 212661878 U CN212661878 U CN 212661878U
- Authority
- CN
- China
- Prior art keywords
- wire
- outer sheath
- sheath tube
- pull
- pulling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention discloses an improved snare which comprises a snare, an outer sheath tube, a pulling and pushing wire and a wire clamp, wherein the pulling and pushing wire is positioned in the outer sheath tube, can axially shuttle along the outer sheath tube in the outer sheath tube, is elastic and can be freely unfolded after extending out of the outer sheath tube, one end of the pulling and pushing wire is fixed with the head end of the outer sheath tube so as to form the snare at the head end of the outer sheath tube, the other end of the pulling and pushing wire extends out of the tail end of the outer sheath tube so as to form a wire pulling and pushing handle at the tail end of the outer sheath tube, so that an operator can conveniently pull, loosen, rotate and move through the wire pulling and pushing handle, and the wire clamp is arranged at the tail end of the pulling and pushing wire and can fix the pulling and pushing wire so as to prevent the wire pulling and pushing wire from rebounding when an endoscope exits. The invention can not only pull and push along the axis, but also pull and push the operated device towards other directions, so that a doctor can accurately cut only the part needing to be cut during the operation.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to an improved snare.
Background
In clinical Endoscopic mucosal dissection (ESD), especially when treating a large lesion, an auxiliary traction technique is often required, so that only a portion to be excised is accurately excised by a doctor during an operation.
The commonly used traction methods at present include dental floss traction, biopsy forceps traction and the like. The disadvantages of using the dental floss for pulling are obvious, the pulling range is small (only a little focus can be pulled), the pulling direction is fixed (only the pulling can be performed to the mouth side of a patient, the improved auxiliary pulley pulling can also be performed to one direction of the focus), the dental floss can not be properly adjusted according to the progress of an operation after being fixed by a titanium clamp, and the use of the dental floss pulling is limited by the above problems. The biopsy forceps (or foreign body forceps and the like) have more limited functions, and when the double-cavity mirror is used for assisting, because the scalpel and the biopsy forceps share one mirror, incision and fixation are mutually interfered during clinical operation, and the operation difficulty is increased.
In the literature, the traction is assisted by using a hard forceps for an endoscope, but the application range is limited, and the traction is possibly only suitable for the treatment of rectal lesions.
In addition, the front end of the electric snare commonly used at present is smooth, and the forceps of a foreign body forceps or a biopsy forceps are difficult to clamp. In addition, the existing snare is provided with a control handle, the size is large, the snare cannot penetrate out of the clamp channel reversely, and if a method of clamping the snare (outside the clamp channel) by using a foreign body clamp (inside the clamp channel) is used, the risk of damaging esophageal mucosa exists.
Disclosure of Invention
The invention aims to provide an improved snare and a use method thereof, which overcome the defects of the existing solutions and provide a device capable of pulling and pushing along an axis and pulling and pushing in other directions, so that a doctor can accurately cut only a part needing to be cut during an operation.
The technical scheme adopted by the invention for solving the problems is as follows:
an improved snare device for the treatment of urinary incontinence,
the pull-push wire is positioned in the outer sheath tube, can axially shuttle along the outer sheath tube in the outer sheath tube, is elastic and can be freely unfolded after extending out of the outer sheath tube, one end of the pull-push wire is fixed with the head end of the outer sheath tube so as to form a ring at the head end of the outer sheath tube, the other end of the pull-push wire extends out of the tail end of the outer sheath tube so as to form a pull-push wire handle at the tail end of the outer sheath tube, so that an operator can pull, push, loosen, rotate and move the pull-push wire through the pull-push wire handle, the wire clamp is arranged at the tail end of the pull-push wire, and the wire clamp can fix the pull-push wire so as to prevent the pull-push wire from rebounding when the endoscope exits.
The pull-push wire is positioned in the outer sheath tube, can axially shuttle along the outer sheath tube in the outer sheath tube, is elastic and can be freely unfolded after extending out of the outer sheath tube, the snare is positioned at the head end of the pull-push wire, namely, extends into one side of a human body and is fixedly connected with the pull-push wire, the other end of the pull-push wire extends out of the tail end of the outer sheath tube, so that a pull-push wire handle is formed at the tail end of the outer sheath tube, an operator can conveniently pull, stretch, loosen, rotate and move through the pull-push wire handle, the wire holder is arranged at the tail end of the pull-push wire, and the wire holder can fix the pull-push wire to prevent the rebound of the pull-push wire when an endoscope exits.
Furthermore, the snare and the pulling and pushing wire are made of different materials, so that different elasticity and strength can be designed according to the functional requirements of the snare and the pulling and pushing wire.
Further, the wire clamping device and the outer sheath tube are of a split structure.
Furthermore, the center of the wire clamping device is provided with a small hole for the traction and push wire to pass through,
further, the wire clamp is wedge-shaped and elastic and can be compressed into the outer sheath, so that the pulling and pushing wire is fixed by increasing the back friction force, the whole structure of the improved snare can pass through the clamping channel of the endoscope, and the clamping channel of the endoscope is not damaged.
Furthermore, the wire clamping device is circumferentially provided with a convex edge, and the convex edge can be turned down to reversely surround the outer sheath tube so as to enhance the wire clamping effect and further prevent the pulling and pushing wire from rebounding when the snare is withdrawn from the endoscope.
Further, the friction force between the wire clamping device and the pulling and pushing line is larger than the friction force between the wire clamping device and the outer sheath tube.
Furthermore, the head end of the sheath tube, namely the side extending into the human body, is provided with micropores along the circumference of the sheath tube, so that other tools can clamp and operate the sheath tube to move.
Compared with the prior art, the method has the advantages that: the snare of the invention can be used for pulling and pushing tissues, can be used for sheathing the cut tissues in a surface contact mode, can be used for pulling, loosening, rotating and moving, has the pulling and pushing line integrally sheathed by the sheath, eliminates the risk of cutting mucous membranes at the tongue, throat and other positions, removes the control handle of the traditional snare from the tail part of the pulling and pushing line, is fixed by the pulling and pushing line handle and the wire clamp, allows the whole improved snare to withdraw from the endoscopic forceps channel, and is more convenient for the operation of an operator.
The method specifically comprises the following steps:
the first step is as follows: the snare of the improved snare is put into the outer sheath tube and enters the human body through a clamping channel on the endoscope;
the second step is that: the snare of the improved snare is pushed out of the outer sheath tube through a pulling and pushing wire and is sleeved at the edge of the target tissue to be tightened;
the third step: the thread clamping device of the improved snare is plugged into the outer sheath tube, and when the thread clamping device is plugged to the position of the convex edge, the convex edge is turned down along the trend, and the outer sheath tube is surrounded reversely;
the fourth step: the endoscope is withdrawn from the human body, the improved snare is retained in a tightened state, and the forceps channel is emptied;
the fifth step: the endoscope is then inserted into the body and enters other tools through the free channel to be used in conjunction with the advanced snare to accurately cut the tissue to be removed.
The third step to the fifth step are circulated, so that the tissue required to be pulled by the operation can be pulled to a required position, so as to safely and accurately cut the pathological tissue and ligate and close the healthy tissue.
Under an endoscope, the improved snare can be used for sleeving a cut tissue in a surface contact mode, can be pulled, loosened and moved, has the pulling and pushing line integrally sleeved by the outer sheath, eliminates the risk of cutting mucous membranes at the tongue, the throat and other positions, removes an operating handle of the traditional snare from the tail part of the pulling and pushing line, is fixed by a pulling and pushing line handle and a wire clamp, allows the whole improved snare to withdraw from an endoscopic forceps channel, and is more convenient for an operator to operate.
The head end of the pulling and pushing line is the side extending into the human body, and the tail end of the pulling and pushing line is the side of the human body outside for the operator to control.
Further, the above teachings are merely illustrative of one method of use of the improved snare and are not limiting of its use in other surgical environments or locations, and primarily embody the detailed functions of the invention.
It should be noted that, the specific structural form of the wire holder designed at the tail end of the pulling and pushing line may be other forms, the specific structure of the invention is only one of them, and other structures as long as the structural design and the deformation design capable of realizing the springback of the pulling and pushing line are also within the protection scope of the invention.
Drawings
FIG. 1 is a schematic view of the use of an improved snare according to the invention,
figure 2 is an isometric view of an improved snare of the invention,
FIG. 3 is a partial schematic view of the improved snare wire holder of the present invention after insertion into the outer sheath,
FIG. 4 is an enlarged view of the improved snare position of the present invention,
in the figure, 10-improved snare, 40-focus, 50-hand of operator, 1-pulling and pushing line, 11-pulling and pushing line handle, 13-snare, 2-wire holder, 21-convex edge, 3-outer sheath tube, 31-micropore.
Detailed Description
The present invention is described in further detail below with reference to the attached drawings.
Example 1
The technical scheme adopted by the invention for solving the problems is as follows:
an improved snare device for the treatment of urinary incontinence,
the endoscope pulling and pushing device comprises a snare 13, an outer sheath tube 3, a pulling and pushing wire 1 and a wire clamp 2, wherein the pulling and pushing wire 1 is positioned in the outer sheath tube 3, can axially extend into the outer sheath tube 3 to shuttle, is elastic and can be freely unfolded after extending out of the outer sheath tube 3, one end of the pulling and pushing wire 1 is fixed with the head end of the outer sheath tube 3 so as to form the snare 13 at the head end of the outer sheath tube 3, the other end of the pulling and pushing wire 1 extends out of the tail end of the outer sheath tube 3 so as to form a pulling and pushing wire handle 11 at the tail end of the outer sheath tube 3 so as to facilitate an operator to carry out pulling, pushing, loosening and loosening, rotating and moving operations through the pulling and pushing wire handle 11, the wire clamp 2 is arranged at the tail end of the pulling and pushing wire 1, and the wire clamp 2 can fix the pulling and pushing wire 1 so as to prevent the pulling and pushing wire 1.
Specifically, the snare 13 and the pulling and pushing wire 1 are made of different materials, so that different elasticity and strength can be designed according to the functional requirements of the snare and the pulling and pushing wire.
Specifically, the wire clamp 2 and the outer sheath tube 3 are of a split structure.
Specifically, the center of the wire holder 2 is provided with a small hole for the traction and push wire 1 to pass through,
specifically, the wire clamp 2 is wedge-shaped, is elastic and can be compressed into the outer sheath 3, so that the pulling and pushing wire 1 is fixed by increasing the back friction force, and the whole structure of the improved snare can pass through the clamping channel of the endoscope without any damage to the clamping channel of the endoscope.
Specifically, the wire clamping device 2 is circumferentially provided with a convex edge 21, and the convex edge 21 can be turned down to reversely surround the outer sheath tube 3 so as to enhance the wire clamping effect and further prevent the pull-push wire 1 from rebounding when the snare is withdrawn from the endoscope.
Specifically, the friction force between the wire holder 2 and the pulling and pushing wire 1 is greater than the friction force between the wire holder 2 and the sheath tube 3.
Specifically, the head end of the sheath 3, i.e. the side extending into the human body, is provided with micropores 31 along the circumference of the sheath 3, so that other tools can clamp and operate the sheath 3 to move.
Example 2
The technical scheme adopted by the invention for solving the problems is as follows:
an improved snare device for the treatment of urinary incontinence,
the endoscope pulling and pushing device comprises a snare 13, an outer sheath tube 3, a pulling and pushing line 1 and a wire clamp 2, wherein the pulling and pushing line 1 is positioned in the outer sheath tube 3, can axially extend out of the outer sheath tube 3 in the outer sheath tube 3 to shuttle, is elastic and can be freely unfolded after extending out of the outer sheath tube 3, the snare 13 is positioned at the head end of the pulling and pushing line 1, namely, extends into one side of a human body and is fixedly connected with the pulling and pushing line 1, the other end of the pulling and pushing line 1 extends out of the tail end of the outer sheath tube 3 so as to form a wire pulling and pushing handle 11 at the tail end of the outer sheath tube 3, an operator can conveniently pull, push, loosen, rotate and move through the wire pulling and pushing handle 11, the wire clamp 2 is arranged at the tail end of the pulling and pushing line 1, and the wire clamp 2 can fix the pulling and pushing line 1 so as to prevent the pulling and pushing line 1.
Specifically, the snare 13 and the pulling and pushing wire 1 are made of different materials, so that different elasticity and strength can be designed according to the functional requirements of the snare and the pulling and pushing wire.
Specifically, the wire clamp 2 and the outer sheath tube 3 are of a split structure.
Specifically, the center of the wire holder 2 is provided with a small hole for the traction and push wire 1 to pass through,
specifically, the wire clamp 2 is wedge-shaped, is elastic and can be compressed into the outer sheath 3, so that the pulling and pushing wire 1 is fixed by increasing the back friction force, and the whole structure of the improved snare can pass through the clamping channel of the endoscope without any damage to the clamping channel of the endoscope.
Specifically, the wire clamping device 2 is circumferentially provided with a convex edge 21, and the convex edge 21 can be turned down to reversely surround the outer sheath tube 3 so as to enhance the wire clamping effect and further prevent the pull-push wire 1 from rebounding when the snare is withdrawn from the endoscope.
Specifically, the friction force between the wire holder 2 and the pulling and pushing wire 1 is greater than the friction force between the wire holder 2 and the sheath tube 3.
Specifically, the head end of the sheath 3, i.e. the side extending into the human body, is provided with micropores 31 along the circumference of the sheath 3, so that other tools can clamp and operate the sheath 3 to move.
The using state of the improved snare 10 of the invention is shown in fig. 1, the improved snare 10 is operated by an operator's hand 50, the lesion 40 is sheathed by the snare 13, the operation of pulling, tightening, loosening, rotating and the like can be carried out on the tail end of the improved snare 10 by the operator's hand 50 according to clinical requirements, and the lesion 40 is exposed out of the combination part of the tissue cutting part and the uncut part under the action of the snare 13, so that the operator can accurately cut the part to be cut.
The specific structure of the improved snare 10 of the invention is shown in fig. 2, the whole structure is in the shape of a slender strip, and the improved snare 10 can realize bending and rotation at any angle under the matching use of other tools. The improved snare 10 can pass through the endoscope clamping channel as a whole, when the snare 13 is clamped on the focus 40 and enters the outer sheath tube 3 through the wire clamp 2 at the tail end of the pulling and pushing wire 1, the pulling and pushing wire 1 is clamped, the endoscope can be taken out freely, the improved snare 10 can be temporarily left in a human body after clamping the focus 40, the endoscope is taken out, the vacant clamping channel can allow other tools to enter and clamp the outer sheath tube 3, and the function of further pulling, pushing and moving is achieved.
As shown in fig. 4, the head end of the outer sheath tube 3 of the improved snare 10 of the present invention is designed with micro-holes, which are used for clamping the front end of the outer sheath tube 3 with the jaws of the biopsy forceps when tools such as the biopsy forceps are put in, so as to increase the friction between the jaws and the outer sheath tube 3 and facilitate the operation of other instruments such as the biopsy forceps. However, the micropores 31 at the front end of the outer sheath tube 3 may be circular, oval, triangular, etc., and are not limited by the present schematic diagram, and the structure of the present invention may have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications fall within the scope of the claimed protection.
It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope or spirit of the invention as set forth in the claims below. Accordingly, the above-described embodiments are for illustrative purposes and are not to be construed as limiting the invention. In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.
Claims (9)
1. An improved snare characterized by:
the pull-push wire is positioned in the outer sheath tube, can axially shuttle along the outer sheath tube in the outer sheath tube, is elastic and can be freely unfolded after extending out of the outer sheath tube, one end of the pull-push wire is fixed with the head end of the outer sheath tube so as to form a ring at the head end of the outer sheath tube, the other end of the pull-push wire extends out of the tail end of the outer sheath tube so as to form a pull-push wire handle at the tail end of the outer sheath tube, so that an operator can pull, push, loosen, rotate and move the pull-push wire through the pull-push wire handle, the wire clamp is arranged at the tail end of the pull-push wire, and the wire clamp can fix the pull-push wire so as to prevent the pull-push wire from rebounding when the endoscope exits.
2. An improved snare according to claim 1, wherein: the snare and the pulling and pushing line are made of different materials, so that different elasticity and strength can be designed according to the functional requirements of the snare and the pulling and pushing line.
3. An improved snare according to claim 1, wherein: the wire clamp and the outer sheath tube are of a split structure.
4. An improved snare according to claim 1, wherein: the center of the wire clamping device is provided with a small hole for the traction and push wire to pass through.
5. An improved snare according to claim 1, wherein: the wire clamp is wedge-shaped and elastic, and can be compressed into the outer sheath, so that the pulling and pushing wire is fixed by increasing the back friction force, the whole structure of the improved snare can pass through the clamping channel of the endoscope, and the clamping channel of the endoscope is not damaged.
6. An improved snare according to claim 1, wherein: the wire clamping device is circumferentially provided with a convex edge which can be turned down to reversely surround the outer sheath tube so as to enhance the wire clamping effect and further prevent the pulling and pushing wire from rebounding when the snare exits the endoscope.
7. An improved snare according to claim 1, wherein: the friction force between the wire clamping device and the pulling and pushing wire is larger than the friction force between the wire clamping device and the outer sheath tube.
8. An improved snare according to claim 1, wherein: the head end of sheath pipe, stretch into human one side promptly, along the circumference of sheath pipe is equipped with the micropore to other instrument centre grippings and operation sheath pipe removes.
9. An improved snare according to any one of claims 1 to 8, wherein:
the pull-push wire is positioned in the outer sheath tube, can axially shuttle along the outer sheath tube in the outer sheath tube, is elastic and can be freely unfolded after extending out of the outer sheath tube, the snare is positioned at the head end of the pull-push wire, namely, extends into one side of a human body and is fixedly connected with the pull-push wire, the other end of the pull-push wire extends out of the tail end of the outer sheath tube, so that a pull-push wire handle is formed at the tail end of the outer sheath tube, an operator can conveniently pull, stretch, loosen, rotate and move through the pull-push wire handle, the wire holder is arranged at the tail end of the pull-push wire, and the wire holder can fix the pull-push wire to prevent the rebound of the pull-push wire when an endoscope exits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922457019.XU CN212661878U (en) | 2019-12-31 | 2019-12-31 | Improved snare |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922457019.XU CN212661878U (en) | 2019-12-31 | 2019-12-31 | Improved snare |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212661878U true CN212661878U (en) | 2021-03-09 |
Family
ID=74811221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922457019.XU Expired - Fee Related CN212661878U (en) | 2019-12-31 | 2019-12-31 | Improved snare |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212661878U (en) |
-
2019
- 2019-12-31 CN CN201922457019.XU patent/CN212661878U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4980777B2 (en) | Endoscopic treatment tool | |
| US7481225B2 (en) | Medical instrument including an end effector having a medical-treatment electrode | |
| JP5792416B1 (en) | Endoscopic treatment system | |
| EP2322109B1 (en) | Treatment instrument for endoscope | |
| JP2007313314A (en) | Lumen stabilizer for endoscopic mucosal resection | |
| JP6224618B2 (en) | Ablation device configured to facilitate excision of tissue and apparatus for excising tissue from the body | |
| CN113397695A (en) | Special magnetic traction operation device for endoscopic mucosal dissection | |
| JP2014171629A (en) | Auxiliary tool for endoscope apparatus and endoscope apparatus using the same | |
| WO2016092981A1 (en) | Endoscope system | |
| CN212661878U (en) | Improved snare | |
| WO2019202699A1 (en) | Medical device | |
| CN113116467A (en) | Improved snare | |
| CN211300131U (en) | Improved snare | |
| JP3143693U (en) | Endoscope device and endoscope hood | |
| CN111166464A (en) | Endoscope tissue cutting knife | |
| US20230054185A1 (en) | Over the scope clip with compliant mechanism | |
| CN215778582U (en) | Special magnetic traction operation device for endoscopic mucosal dissection | |
| CN211325240U (en) | Auxiliary traction device and auxiliary system | |
| CN215994109U (en) | Medical metal clip device | |
| CN216628695U (en) | Multifunctional combined cutting forceps under endoscope | |
| JP2004113546A (en) | High-frequency snare | |
| CN220212878U (en) | Distal end cap and medical delivery catheter | |
| CN217696741U (en) | Polyp storage device under scope and application structure thereof | |
| CN213429981U (en) | But tractive scope annex device | |
| CN211750032U (en) | Endoscope tissue cutting knife |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210309 Termination date: 20211231 |