CN216652437U

CN216652437U - Mucous membrane incision knife

Info

Publication number: CN216652437U
Application number: CN202122303772.0U
Authority: CN
Inventors: 张润泽
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-06-03
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses a mucosa incision knife, which comprises: the operating handle is arranged at the near end of the sheath tube, the electric cutting wire is movably arranged on the outer wall of the sheath tube and is close to the far end of the sheath tube, when an operator uses the mucosa incision knife, the far end of the sheath tube is inserted into a nipple under the action of an endoscope, the operator uses the operating handle to control the electric cutting wire, the electric cutting wire is pushed to move to the far end of the sheath tube, and then the electric cutting wire is arched outwards outside the sheath tube, the operator can control the size of the outward arch of the electric cutting wire through the operating handle, after the electric cutting wire is electrified, the electric cutting wire is enabled to cut the mucosa of the nipple, and the poor incision effect caused by the fact that the operator excessively small action is avoided; the excessive movement causes perforation of the mucous membrane, and the occurrence of concurrent damage is caused; meanwhile, the efficiency of the operation is improved.

Description

Mucous membrane incision knife

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a mucosa incision knife.

Background

As shown in fig. 1, in order to cut the papillary mucosa with the conventional incision knife, the knife wire 1 is pulled backward in the drawing, so that the distal end of the outer tube 2 is bent, the distal end of the outer tube 2 is inserted into the papillary, and then the operator moves the outer tube 2 integrally, and then the knife wire 1 performs high-frequency electrical cutting on the papillary mucosa. The incision size of the papillary sphincter influences the success of the whole operation, but the incision size of the papillary sphincter can not be seen under an endoscope in the operation process, so that the incision size can be performed by combining the observation of a duodenoscope on the surface of the papillary sphincter according to experience and habit during the operation, but whether the actual incision size inside the papillary is consistent with that of a cholepancreatic duct or not is judged, particularly whether the calculus can be smoothly taken out or not is judged, and an operator can only follow the feeling and the conventional experience, and the operation of a new hand is difficult, the action is too small, and the incision effect is poor; too much movement results in perforation of the mucous membrane, causing concurrent damage; the efficiency of the procedure is also reduced. Therefore, there is a need for a mucosal incision knife that at least partially solves the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content of the present invention is not intended to define key features or essential features of the claimed solution, nor is it intended to be used to limit the scope of the claimed solution.

To at least partially solve the above problems, the present invention provides a mucosal incision knife comprising: sheath pipe, electric cutting wire and operating handle, operating handle sets up the near-end of sheath pipe, the movable setting of electric cutting wire is in the outer wall of sheath pipe and being close to the distal end of sheath pipe, operating handle is used for promoting the electric cutting wire makes the electric cutting wire is relative the sheath pipe is outwards arched in order to cut nipple mucous membrane.

According to the mucosa incision knife provided by the embodiment of the utility model, the electric cutting wire is outwards in one of an inverted U shape, an inverted V shape, an inverted T shape and an inverted L shape.

According to the mucosa cutting knife provided by the embodiment of the utility model, when the electric cutting wire is in an inverted U shape, the electric cutting wire is provided with an inverted U-shaped head end and two arm sections, and an insulating layer is arranged on at least one arm section.

According to the mucosa incision knife provided by the embodiment of the utility model, when the electric cutting wire is arched outwards, the height of the electric cutting wire is 1-10 mm.

According to the mucosa incision knife provided by the embodiment of the utility model, the height of the electric cutting wire is 5 mm.

According to the mucosa incision knife provided by the embodiment of the utility model, the electric lead is arranged in the sheath tube, the near end of the electric lead is electrically connected with the sliding ring on the operating handle, and the near end of the electric cutting wire penetrates through the outer wall of the sheath tube and is electrically connected with the far end of the electric lead.

According to the mucosa incision knife provided by the embodiment of the utility model, a fixing piece is arranged in the far end of the sheath tube, and the fixing piece is connected with the far end of the electric cutting wire.

According to the mucosa incision knife provided by the embodiment of the utility model, the sheath tube is provided with the first silk hole and the second silk hole, the first silk hole and the second silk hole are both close to the far end of the sheath tube, the second silk hole is positioned between the first silk hole and the far end of the sheath tube, the far end of the electric cutting silk penetrates through the first silk hole to be connected with the fixing piece, and the near end penetrates through the second silk hole to be connected with the far end of the electric lead.

According to the mucosa incision knife provided by the embodiment of the utility model, the slip ring is provided with the conductive column, and the near end of the electric lead is electrically connected with the inner end of the conductive column.

According to the mucosa incision knife provided by the embodiment of the utility model, the sheath tube is provided with the first connecting tube and the second connecting tube at the positions close to the proximal end.

Compared with the prior art, the utility model at least comprises the following beneficial effects:

the utility model provides a mucosa incision knife, which comprises: the operation handle is arranged at the near end of the sheath tube, the electric cutting wire is movably arranged on the outer wall of the sheath tube and is close to the far end of the sheath tube, when an operator uses the mucosa incision knife, the far end of the sheath tube is inserted into a nipple under the action of an endoscope, the operator uses the operation handle to control the electric cutting wire, the electric cutting wire is pushed to move to the far end of the sheath tube, the electric cutting wire is arched outwards in a U shape outside the sheath tube, the operator can control the size of the electric cutting wire in the U shape through the operation handle, after the electric cutting wire is electrified, the electric cutting wire is used for cutting the mucosa of the nipple, and the problem that the incision effect is poor due to the fact that the action of the operator is too small is avoided; the excessive movement causes perforation of the mucous membrane, and the occurrence of concurrent damage is caused; meanwhile, the efficiency of the operation is improved.

The mucosal incisor of the present invention, and other advantages, objects, and features of the present invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination and practice of the utility model.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view of a prior art incision knife for incising duodenal papilla.

Fig. 2 is a schematic structural view of the mucosa incision knife of the utility model.

FIG. 3 is a schematic view of the electric cutting wire of the present invention in an inverted U-shape.

FIG. 4 is a schematic view of the electric cutting wire of the present invention in an inverted V shape.

FIG. 5 is a schematic view of the electric cutting wire of the present invention in an inverted T shape.

FIG. 6 is a schematic view of an electric cutting wire of the present invention in an inverted L-shape.

Fig. 7 is a schematic structural view of the inverted U-shaped head end of the present invention.

FIG. 8 is a schematic view of the present invention with an insulating layer on at least one arm segment.

FIG. 9 is a schematic diagram of the structure of the present invention with an insulating layer on two arm segments.

Detailed Description

The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can practice the utility model with reference to the description.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or combinations thereof.

As shown in fig. 2, the present invention provides a mucosal incision knife, comprising: sheath pipe 2, electric cutting wire 3 and operating handle 4, operating handle 4 sets up the near-end of sheath pipe 2, electric cutting wire 3 movably sets up the outer wall of sheath pipe 2 and is close to the distal end of sheath pipe 2, operating handle 4 is used for promoting electric cutting wire 3 makes electric cutting wire 3 is relative the outside hunch-up of sheath pipe 2 is in order to cut the nipple mucous membrane.

The working principle and the beneficial effects of the technical scheme are as follows: the utility model provides a mucosa incision knife, which comprises: the operation handle 4 is installed at the near end of the sheath tube 2, the electric cutting wire 3 is movably installed on the outer wall of the sheath tube 2 and is close to the far end of the sheath tube 2, when an operator uses the mucosa incision knife, the far end of the sheath tube 2 is inserted into a nipple under the action of an endoscope, the operator uses the operation handle 4 to control the electric cutting wire 3 to push the electric cutting wire 3 to move towards the far end of the sheath tube 2, and then the electric cutting wire 3 is arched outwards relative to the outer end of the sheath tube 2, the operator can control the size of the outward arch of the electric cutting wire 3 through the operation handle 4, after the electric cutting wire 3 is electrified, the electric cutting wire 3 is enabled to cut the mucosa of the nipple, and further poor incision effect caused by small action of the operator is avoided; the excessive movement causes perforation of the mucous membrane, and the occurrence of concurrent damage is caused; meanwhile, the efficiency of the operation is improved.

Of course, the mucosa incision knife of the utility model can also be used according to the operation mode shown in fig. 1, that is, the operator uses the operation handle 4 to pull the electric cutting wire 3 backwards, and further pulls the distal end of the sheath tube 2 backwards, and the electric cutting wire 3 is in a linear shape at this time, so as to conveniently cut the mucosa of the nipple.

As shown in fig. 3-6, in one embodiment, the electric cutting wire 3 is one of an inverted U-shape, an inverted V-shape, an inverted T-shape, and an inverted L-shape outward.

As shown in fig. 7-9, when the electric cutting wire 3 is in an inverted U shape, it has an inverted U-shaped head 31 and two arm segments 32, and at least one of the arm segments 32 is provided with an insulating layer 33.

The working principle and the beneficial effects of the technical scheme are as follows: in the embodiment, the structure of the electric cutting wire 3 is provided, when an operator pushes the electric cutting wire 3 outwards by using the operating handle 4, the electric cutting wire 3 is made to be one of an inverted U shape, an inverted V shape, an inverted T shape and an inverted L shape outwards, so that the papillary mucosa is conveniently cut;

the electric cutting wire 3 is in an inverted U shape, and specifically, when the electric cutting wire 3 of this structure is in an inverted U shape, the electric cutting wire has an inverted U-shaped head end 31 and two arm sections 32, wherein, in order to avoid cutting the papillary mucosa too much after the electric cutting wire 3 is powered on, at least one arm section 32 is provided with an insulating layer 33, and certainly, the insulating layer 33 can be designed on both the arm sections 32, so that the papillary mucosa cannot be cut when the arm sections 32 contact the papillary mucosa, thereby increasing the safety of the operation.

In one embodiment, the electric cutting wire 3 has a height of 1-10mm when it is in the shape of an inverted U.

Further, the electric cutting wire 3 has a height of 5 mm.

The working principle and the beneficial effects of the technical scheme are as follows: in the present embodiment, the height of the electric cutting wire 3 is provided when the electric cutting wire 3 is in an inverted U shape, specifically, when the electric cutting wire 3 is in an inverted U shape, the height is 1-10mm, such as: 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm or 10mm, where the height of the electrical cutting wire 3 may be 5mm, in particular, when it is U-shaped, to facilitate the cutting of the papillary mucosa.

In one embodiment, an electrical lead 21 is disposed inside the sheath 2, a proximal end of the electrical lead 21 is electrically connected to a slip ring 41 on the operating handle 4, and a proximal end of the electrical cutting wire 3 passes through an outer wall of the sheath 2 and is electrically connected to a distal end of the electrical lead 21.

Further, a conductive post 42 is disposed on the slip ring 41, and a proximal end of the electrical conductor 21 is electrically connected to an inner end of the conductive post 42.

The working principle and the beneficial effects of the technical scheme are as follows: in the present embodiment, the electrical conducting wire 21 is installed in the sheath tube 2, where the proximal end of the electrical conducting wire 21 is electrically connected to the sliding ring 41 on the operating handle 4, it can be understood that there is a conductive post 42 on the sliding ring 41, the proximal end of the electrical conducting wire 21 is electrically connected to the inner end of the conductive post 42, the proximal end of the electrical cutting wire 3 passes through the outer wall of the sheath tube 2 and is electrically connected to the distal end of the electrical conducting wire 21, the conductive post 42 can be electrically connected to an external high-frequency generator (not shown), and the electrical conducting wire 21 supplies power to the electrical cutting wire 3, so as to facilitate the operator to cut the papilla with the mucosal incising knife.

In one embodiment, a fixation member 22 is arranged inside the distal end of the sheath 2, said fixation member 22 being connected to the distal end of the electrical cutting wire 3.

The working principle and the beneficial effects of the technical scheme are as follows: in this embodiment, the fixing member 22 is installed in the distal end of the sheath tube 2, and the fixing member 22 can fix the distal end of the electric cutting wire 3, thereby preventing the distal end from moving to affect the cutting effect when the electric cutting wire 3 is pushed to arch outwards in a U-shaped manner.

In one embodiment, the sheath 2 is provided with a first filament hole 23 and a second filament hole 24, the first filament hole 23 and the second filament hole 24 are both near the distal end of the sheath 2, the second filament hole 24 is located between the first filament hole 23 and the distal end of the sheath 2, the distal end of the electrical cutting filament 3 passes through the first filament hole 23 to be connected with the fixing member 22, and the proximal end passes through the second filament hole 24 to be connected with the distal end of the electrical lead 21.

The working principle and the beneficial effects of the technical scheme are as follows: the present embodiment provides a first thread hole 23 and a second thread hole 24, and specifically, a first thread hole 23 and a second thread hole 24 are formed in the sheath tube 2, wherein the first thread hole 23 and the second thread hole 24 are both close to the distal end of the sheath tube 2, the second thread hole 24 is located between the first thread hole 23 and the distal end of the sheath tube 2, here, the distal end of the electrical cutting wire 3 passes through the first thread hole 23 to be connected to the fixing member 22, and the proximal end passes through the second thread hole 24 to be connected to the distal end of the electrical lead 21, so that the electrical cutting wire 3 can be conveniently U-shaped between the first thread hole 23 and the second thread hole 24.

In one embodiment, the sheath 2 is provided with a first adapter tube 25 and a second adapter tube 26 at a location near its proximal end.

The working principle and the beneficial effects of the technical scheme are as follows: in the present embodiment, a first adapter tube 25 and a second adapter tube 26 are provided on the sheath tube 2 near the proximal end thereof. It can be understood that the first connecting pipe 25 or the second connecting pipe 26 is used as an access pipe of a water supply cavity or a cavity with different functional configurations;

further, inside the sheath 2 are porous channels (not shown) having different functions, including an electrical wire channel through which the electrical wire 21 passes, a guide wire channel through which the guide wire passes, and a liquid channel through which the injection agent is delivered. The three cavities with different functional configurations are mutually independent, and it can be understood that the mucosa incision knife with the porous cavity can guide the incision knife into the pipeline in advance through the guide wire in the operation process, and then the electric lead 21 conducts the electric incision wire 3 to complete the incision; and injecting an injection solution, such as a contrast medium, during the surgical procedure.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

While embodiments of the utility model have been disclosed above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. A mucosal cutting knife, comprising: sheath pipe (2), electric cutting wire (3) and operating handle (4), operating handle (4) set up the near-end of sheath pipe (2), electric cutting wire (3) movably sets up the outer wall of sheath pipe (2) is close to the distal end of sheath pipe (2), operating handle (4) are used for promoting electric cutting wire (3), make electric cutting wire (3) are relative sheath pipe (2) outwards hunch-up is in order to cut the nipple mucous membrane.

2. The mucosal incision knife of claim 1, wherein the electrical cutting wire (3) is one of inverted U-shaped, inverted V-shaped, inverted T-shaped, and inverted L-shaped outward.

3. The mucosal incision knife according to claim 2, wherein the electrical cutting wire (3) is of an inverted U-shape having an inverted U-shaped head end (31) and two arm segments (32), at least one of the arm segments (32) having an insulating layer (33) disposed thereon.

4. The mucosal incision knife of claim 1, wherein the height of the electrical cutting wire (3) is 1-10mm when the electrical cutting wire (3) is arched outward.

5. The mucosal incision knife according to claim 4, wherein the electrical cutting wire (3) has a height of 5 mm.

6. The mucosal incision knife according to claim 1, wherein an electrical lead (21) is arranged in the sheath (2), the proximal end of the electrical lead (21) is electrically connected with a slip ring (41) on the operating handle (4), and the proximal end of the electrical cutting wire (3) passes through the outer wall of the sheath (2) and is electrically connected with the distal end of the electrical lead (21).

7. The mucosal incision knife according to claim 1 or 6, wherein a fixing member (22) is arranged in the distal end of the sheath (2), the fixing member (22) being connected to the distal end of the electrical cutting wire (3).

8. The mucosal incision knife according to claim 7, wherein the sheath (2) is provided with a first thread hole (23) and a second thread hole (24), the first thread hole (23) and the second thread hole (24) are both close to the distal end of the sheath (2), the second thread hole (24) is located between the first thread hole (23) and the distal end of the sheath (2), the distal end of the electric cutting thread (3) passes through the first thread hole (23) to be connected with the fixing member (22), and the proximal end passes through the second thread hole (24) to be connected with the distal end of the electric lead (21).

9. The mucosal incision knife according to claim 6, wherein the slip ring (41) is provided with a conductive post (42), and the proximal end of the electrical lead (21) is electrically connected with the inner end of the conductive post (42).

10. The mucosal incision knife according to claim 1, wherein the sheath (2) is provided with a first adapter (25) and a second adapter (26) near its proximal end.