CN216221587U - Endoscope incision knife - Google Patents

Abstract

The utility model discloses an endoscopic incision knife, which comprises: the cutting knife comprises a cutting knife head, a steel wire, a catheter, an operating handle, an electrode and a handle, wherein the cutting knife head is bent, and the cutting knife head is arranged on the catheter and movably connected with the steel wire. The utility model provides an endoscopic incision knife which mainly comprises an incision knife head, a steel wire, a catheter, an operating handle, an electrode and a handle, wherein the incision knife head is bent, so that gastrointestinal mucosa can be better incised, the endoscopic incision knife is suitable for diseased mucosa on the inner wall of a curved surface which is concave and convex in the stomach and intestine, the gastrointestinal wall is not easy to cut and leak, the excision difficulty of the diseased mucosa is reduced, the operation time can be shortened, and the operation risk is reduced.

Description

Endoscope incision knife

Technical Field

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

Background

When pathological changes are generated on human gastrointestinal mucosa, such as generation of tumors or polyps, the traditional mode is surgical operation treatment, the existing minimally invasive therapy is adopted, the endoscope is used for treatment, and when the endoscope is used for treatment, instruments matched with the endoscope are needed. Accordingly, there is a need for an endoscopic incision knife that at least partially addresses 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.

In order to at least partially solve the problems, the utility model provides an endoscopic incision knife which comprises an incision knife head, a steel wire, a catheter, an operation handle, an electrode and a handle, wherein the incision knife head is bent, and the incision knife head is arranged on the catheter and movably connected with the steel wire.

Preferably, the incision knife head includes a first knife body, a second knife body and a knife holder, the knife holder is disposed at the distal end of the catheter, and the proximal ends of the first knife body and the second knife body are movably disposed in the knife holder and movably connected to the steel wire, so that the first knife body and the second knife body open and close.

Preferably, a plurality of saw teeth are arranged on the cutting edge surface of the first cutter body facing the second cutter body and the cutting edge surface of the second cutter body facing the first cutter body.

Preferably, the cutting tip has a bending angle of 0 ° to 50 °, and the distal ends of the first and second blade bodies are provided with the first insulating layer.

Preferably, the tool apron includes a first seat tube, a second seat tube, a shaft rod, a first guide rod and a second guide rod, the second seat tube is disposed in the distal end of the guide tube, the first seat tube is disposed on the proximal end of the second seat tube and is close to the distal end of the guide tube, the shaft rod is disposed in the first seat tube, two opposite notch grooves are disposed on the tube wall of the first seat tube, the notch grooves extend from the proximal end of the first seat tube to the distal end, the proximal ends of the first cutter body and the second cutter body extend into the first seat tube and are rotatably connected with the shaft rod, the first cutter body is movably connected with the steel wire through the first guide rod, the second cutter body is movably connected with the steel wire through the first guide rod, and the first cutter body and the second cutter body respectively correspond to the two notch grooves.

Preferably, the distal end of the first guide rod is hinged to the proximal end of the first cutter body, and the proximal end of the first guide rod is hinged to the distal end of the steel wire;

the far end of the second guide rod is hinged with the near end of the second cutter body, and the near end of the second guide rod is hinged with the far end of the steel wire.

Preferably, the second seat pipe is rotatably connected to the guide pipe, the second seat pipe is provided with an outer ring, the guide pipe is provided with an inner ring groove, and the outer ring is disposed in the inner ring groove and rotatably connected to the inner ring groove.

The utility model also provides an endoscopic incision knife which comprises an incision knife head, a control wire, a catheter, an operating handle, an electrode and a handle, wherein the incision knife head is arranged on the catheter and movably connected with the control wire, the incision knife head comprises a left knife body and a right knife body which can be mutually opened and closed, a left cutting section and a left clamping section are arranged on the left knife body, the left clamping section is positioned at the far end of the left cutting section, a right cutting section and a right clamping section are arranged on the right knife body, the right clamping section is positioned at the far end of the right cutting section, the left cutting section corresponds to the right cutting section, and the left clamping section corresponds to the right clamping section.

Preferably, wherein the left cutting segment is hinged to the right cutting segment;

a plurality of wavy edge teeth are arranged on the edge of the left cutting section, a strip-shaped hole is formed in the right cutting section, and the wavy edge teeth can be accommodated in the strip-shaped hole; or the like, or, alternatively,

and a plurality of wavy edge teeth are arranged on the edge of the left cutting section and the edge of the right cutting section.

Preferably, the inner surface of the left clamping section and the inner surface of the right clamping section are provided with a plurality of concave-convex clamping teeth corresponding to each other; the outer surfaces of the left cutting section, the left clamping section, the right cutting section and the right clamping section are all provided with second insulating layers, and the parts, close to the 1-2mm far ends of the inner surfaces of the left clamping section and the right clamping section, of the inner surfaces of the left clamping section and the right clamping section are also provided with the second insulating layers.

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

1. the utility model provides an endoscopic incision knife which mainly comprises an incision knife head, a steel wire, a catheter, an operating handle, an electrode and a handle, wherein the incision knife head is bent, so that gastrointestinal mucosa can be better incised, the endoscopic incision knife is suitable for diseased mucosa on the inner wall of a curved surface which is concave and convex in the stomach and intestine, the gastrointestinal wall is not easy to cut and leak, the excision difficulty of the diseased mucosa is reduced, the operation time can be shortened, and the operation risk is reduced.

2. The utility model also provides an endoscopic incision knife which mainly comprises an incision knife head, a steel wire, a catheter, an operating handle, an electrode and a handle, wherein the incision knife head comprises a left knife body and a right knife body which can be mutually opened and closed, the left knife body is provided with a left cutting section and a left clamping section, the left clamping section is positioned at the far end of the left cutting section, the right knife body is provided with a right cutting section and a right clamping section, the right clamping section is positioned at the far end of the right cutting section, gastrointestinal mucosa can be better clamped and excised, the endoscopic incision knife is not only suitable for diseased mucosa on the inner wall of a curved surface with concave and convex parts in the gastrointestinal tract, but also is not easy to cut and leak the gastrointestinal wall, the excision difficulty of the diseased mucosa is reduced, the operation time is shortened, and the operation risk is reduced.

Additional advantages, objects, and features of the utility model 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 of the following or may be learned from 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 structural view of an endoscopic incision knife according to the present invention.

Figure 2 is a schematic view of the structure of the scalpel head of figure 1 in an endoscopic knife according to the present invention.

Figure 3 is a side view of the structure of an endoscopic incision blade in accordance with the present invention.

Fig. 4 is a schematic structural view of an open state of an incision blade in an endoscopic incision knife according to the present invention.

Figure 5 is a schematic view of the structure of the spring in the scalpel head of the endoscopic scalpel according to the present invention.

Fig. 6 is another schematic structural view of an endoscopic incision knife according to the present invention.

Figure 7 is a schematic view of the structure of the scalpel head of figure 6 in an endoscopic knife according to the present invention.

Fig. 8 is a schematic structural view of the right knife body of the endoscopic incision knife according to the present invention.

Figure 9 is another schematic view of the incising blade of figure 6 in an endo-knife of the present invention.

Fig. 10 is a schematic structural view of the left knife body of the endoscopic incision knife according to the present invention.

Fig. 11 is a schematic structural view of the right blade opening relative to the left blade opening in the present invention.

Fig. 12 is a schematic view of the structure of the left knife body relative to the right knife body.

Fig. 13 is a schematic structural view of the left and right knife bodies of the present invention being opened with respect to each other.

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 groups thereof.

As shown in fig. 1-4, the utility model provides an endoscopic incision knife, which comprises an incision knife head 1, a steel wire 2, a conduit 3, an operation handle 4, an electrode 5 and a handle 6, wherein the incision knife head 1 is bent, and the incision knife head 1 is arranged on the conduit 3 and movably connected with the steel wire 2.

The working principle of the technical scheme is as follows: the utility model provides an endoscopic incision knife which mainly comprises an incision knife head 1, a steel wire 2, a catheter 3, an operating handle 4, an electrode 5 and a handle 6, wherein when the incision knife head 1 reaches gastrointestinal lesion mucous membranes of a patient, medical staff use the operating handle 4 to control the steel wire 2 to rotate the incision knife head 1 to a proper angle with the lesion mucous membranes, then pull the steel wire 2 through the operating handle 4 to enable the incision knife head 1 to be in an open state, then move the incision knife head 1 to the lesion mucous membranes, then start an external power supply, and supply power to the incision knife head 1 through the electrode 5 and the steel wire 2 to perform electric incision on the lesion mucous membranes, wherein the incision knife head 1 is in a bent shape and is just suitable for the lesion mucous membranes on the inner walls of the concave and uneven curved surfaces of the gastrointestinal tracts.

The beneficial effects of the above technical scheme are that: through the design of the structure, the utility model provides the endoscopic incision knife which mainly comprises an incision knife head 1, a steel wire 2, a catheter 3, an operating handle 4, an electrode 5 and a handle 6, wherein the incision knife head 1 is bent, so that the gastrointestinal mucosa can be better incised, the endoscopic incision knife is suitable for the diseased mucosa on the inner wall of the concave and convex curved surface of the gastrointestinal tract, the gastrointestinal tract is not easy to be incised and leaked, the excision difficulty of the diseased mucosa is reduced, the operation time can be shortened, and the operation risk is reduced.

In one embodiment, the incision tool 1 comprises a first tool body 11, a second tool body 12 and a tool holder 13, the tool holder 13 is disposed at the distal end of the catheter 3, and the proximal ends of the first tool body 11 and the second tool body 12 are movably disposed in the tool holder 13 and movably connected with the wire 2, so that the first tool body 11 and the second tool body 12 are opened and closed.

The working principle of the technical scheme is as follows: the present embodiment provides the structure of the cutter head 1, specifically, the cutter head 1 includes a first cutter body 11, a second cutter body 12, and a holder 13; after the incision tool bit 1 reaches the pathological change mucous membrane, medical personnel pull the steel wire 2 through the operating handle 4, the steel wire 2 makes the first cutter body 11, the second cutter body 12 open through the blade holder 13, then the first cutter body 11, the second cutter body 12 are closed after will become pathological change mucous membrane, the steel wire 2 supplies power to the first cutter body 11, the second cutter body 12 after circular telegram, and then realize the electricity excision to the pathological change mucous membrane.

The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, provide the structure of cutting off tool bit 1 in this embodiment, this cutting off tool bit 1 includes first cutter body 11, second cutter body 12 and blade holder 13, has simple structure, the characteristics of facilitate the use.

In one embodiment, a plurality of serrations 14 are provided on both the cutting face of the first cutter body 11 facing the second cutter body 12 and the cutting face of the second cutter body 12 facing the first cutter body 11.

The working principle of the technical scheme is as follows: in order to facilitate the first and second knife bodies 11, 12 to better clamp the mucous membrane of lesion, in this embodiment, a plurality of saw teeth 14 are disposed on both the blade surface of the first knife body 11 facing the second knife body 12 and the blade surface of the second knife body 12 facing the first knife body 11, so that after the first and second knife bodies 11, 12 are opened, the saw teeth 14 can hook the edge of the mucous membrane of lesion, and when the first and second knife bodies 11, 12 are closed, the saw teeth 14 pull the mucous membrane of lesion closer to each other, thereby better clamping the mucous membrane of lesion.

The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, a plurality of sawtooth 14 have been designed on first cutter body 11, second cutter body 12 in this embodiment, and sawtooth 14 draws close pathological change mucous membrane each other to this better with pathological change mucous membrane clip, reduced medical personnel to the excision difficulty and the risk of pathological change mucous membrane, improved the efficiency of operation.

In one embodiment, the cutting insert 1 has a bending angle of 0 ° to 50 °, and the distal ends of the first and second insert bodies 11, 12 are provided with a first insulating layer 15.

The working principle of the technical scheme is as follows: since the section of the stomach and intestine is a rugged curved surface, in order to make the cutter head 1 better fit against the inner wall of the stomach and intestine, the angle of bending is limited to 0 to 50 ° on the basis of designing the cutter head 1 to be bent, specifically, as follows: the angle of the blade 1 is not limited in the present application, and may be selected according to the specific conditions, i.e., 5 °, 8 °, 10 °, 10.5 °, 12 °, 13 °, 14.5 °, 15 °, 16 °, 17 °, 18 °, 19 °, 20 °, 22 °, 25 °, 28 °, 30 °, 32 °, 35 °, 38 °, 40 °, 42 °, 45 °, 48 °, 50 °, or any value of the above ranges.

The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, the bending angle of cutting tool bit 1 in this embodiment is 0-50, and cutting tool bit 1 pastes the interior wall laminating with the intestines and stomach better like this, further conveniently carries out the electricity excision with the pathological change mucous membrane.

In one embodiment, the tool holder 13 includes a first holder tube 131, a second holder tube 132, a shaft 133, a first guide rod 134, and a second guide rod 135, the second holder tube 132 is disposed in the distal end of the guide tube 3, the first holder tube 131 is disposed on the proximal end of the second holder tube 132 and is close to the distal end of the guide tube 3, the shaft 133 is disposed in the first holder tube 131, two opposite notch grooves 136 are disposed on the tube wall of the first holder tube 131, the notch grooves 136 extend from the proximal end of the first holder tube 131 to the distal end, the proximal ends of the first and second tool bodies 11 and 12 extend into the first holder tube 131 and are rotatably connected with the shaft 133, the first tool body 11 is movably connected with the steel wire 2 through the first guide rod 134, the second tool body 12 is movably connected with the steel wire 2 through the first guide rod 134, and the first tool body 11, the second tool body 12, The second cutter body 12 corresponds to the two notch grooves 136, respectively.

The working principle of the technical scheme is as follows: the present embodiment provides a structure of the knife holder 13, specifically, the knife holder 13 includes a first holder tube 131, a second holder tube 132, a shaft 133, a first guide rod 134, and a second guide rod 135, the second holder tube 132 is installed in the distal end of the catheter 3, so as to connect the whole knife holder 13 with the catheter 3, the medical staff uses the operation handle 4 to pull the steel wire 2, since the distal end of the steel wire 2 is movably connected with the proximal ends of the first guide rod 134 and the second guide rod 135, the steel wire 2 can pull the first guide rod 134 and the second guide rod 135, so that the first knife body 11 and the second knife body 12 are also pulled, since the first knife body 11 and the second knife body 12 are installed in the first holder tube 131 through the shaft 133, when the steel wire 2 pushes the first guide rod 134 and the second guide rod 135 outwards, the first guide rod 134 and the second guide rod 135 are close to each other, so that the proximal ends of the first knife body 11 and the second knife body 12 are also close to each other, therefore, the distal ends are far away from each other, the first knife body 11 and the second knife body 12 are opened, the first knife body 11 and the second knife body 12 are further opened to the outer edge of the lesion mucosa, and then the medical staff pushes the operating handle 4 and the steel wire 2, so that the steel wire 2 pushes the first guide rod 134 and the second guide rod 135, and the first knife body 11 and the second knife body 12 are further closed to clamp the outer edge of the lesion mucosa.

The beneficial effects of the above technical scheme are that: through the design of the above structure, the present embodiment provides the structure of the tool holder 13, the tool holder 13 of the structure includes the first holder tube 131, the second holder tube 132, the shaft rod 133, the first guide rod 134 and the second guide rod 135, and the opening and closing of the first knife body 11 and the second knife body 12 can be conveniently realized through the cooperation with the steel wire 2, so as to conveniently clamp the mucous membrane of the lesion to complete the electrical excision.

In one embodiment, the distal end of the first guide rod 134 is hinged to the proximal end of the first blade 11, and the proximal end of the first guide rod 134 is hinged to the distal end of the steel wire 2;

the distal end of the second guide rod 135 is hinged to the proximal end of the second knife body 12, and the proximal end of the second guide rod 135 is hinged to the distal end of the steel wire 2.

The working principle of the technical scheme is as follows: in the embodiment, a screw connection mode between the first guide rod 134 and the second guide rod 135 and the incision tool bit 1 and the steel wire 2 is provided, specifically, a distal end of the first guide rod 134 is hinged to a proximal end of the first tool body 11, a proximal end of the first guide rod 134 is hinged to a distal end of the steel wire 2, and since the proximal end of the first tool body 11 is simultaneously and rotatably connected to the shaft rod 133, the steel wire 2 can realize action transmission to the first tool body 11 through the first guide rod 134; similarly, the distal end of the second guide rod 135 is hinged to the proximal end of the second knife body 12, the proximal end of the second guide rod 135 is hinged to the distal end of the steel wire 2, and the steel wire 2 can transmit the motion to the second knife body 12 through the second guide rod 135, so that the reciprocating motion (pushing and pulling) of the steel wire 2 in the guide tube 3 is converted into the opening or closing of the first knife body 11 and the second knife body 12.

The beneficial effects of the above technical scheme are that: through the design of the above structure, in this embodiment, the first guide rod 134 is hinged to the first cutter body 11 and the steel wire 2, and the second guide rod 135 is hinged to the second cutter body 12 and the steel wire 2, so that the structure is simple and the manufacture is convenient, and the reciprocating movement of the steel wire 2 is converted into the opening or closing of the first cutter body 11 and the second cutter body 12.

As shown in fig. 5, in order to facilitate the closing of the first and second knife bodies 11, 12, a spring 139 is disposed between the proximal ends of the first and second guide rods 134, 135, and the spring 139 is a compression spring, so when the medical staff pushes the first and second guide rods 134, 135 to the first and second knife bodies 11, 12 through the steel wire 2, the proximal ends of the first and second guide rods 134, 135 have a tendency to separate from each other, and the spring 139 abuts against the first and second guide rods 134, 135, which further increases the tendency, can provide assistance to the medical staff, and also increases the "biting force" of the closing of the first and second knife bodies 11, 12.

In one embodiment, the second seat tube 132 is rotatably connected to the guide tube 3, the second seat tube 132 is provided with an outer ring 137, the guide tube 3 is provided with an inner ring groove 138, and the outer ring 137 is disposed in the inner ring groove 138 and rotatably connected to the inner ring groove 138.

The working principle of the technical scheme is as follows: in order to facilitate the medical staff to rotate the incision knife head 1 in the stomach and intestine according to the requirement, in this embodiment, the second seat tube 132 and the catheter 3 are designed to be rotatably connected, specifically, the second seat tube 132 is provided with an outer ring 137, the catheter 3 is provided with an inner ring groove 138, the outer ring 137 is installed in the inner ring groove 138, and the outer ring 137 can rotate in the inner ring groove 138, so when the medical staff rotates the steel wire 2 by using the operation handle 4, the steel wire 2 drives the first seat tube 131 to rotate through the first guide rod 134 and the second guide rod 135, and the first seat tube 131 and the second seat tube 132 are fixedly connected, so the second guide seat 132 can rotate with the catheter 3, thereby realizing the rotation of the incision knife head 1.

The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, provide structures such as outer loop 137, inner ring groove 138 in this embodiment, make things convenient for medical personnel to rotate and open tool bit 1, further reduced medical personnel to the excision difficulty and the risk of pathological change mucous membrane, improved the efficiency of operation.

In one embodiment, further comprising: the rotating control device is arranged between the inner wall of the guide pipe 3 and the outer wall of the steel wire 2 and is close to the second seat pipe 132, the rotating control device comprises a circle of clamping grooves fixedly arranged on the outer wall of the steel wire 2 and a retainer with balls fixedly arranged at the corresponding position of the inner wall of the guide pipe 3, and the clamping grooves are matched with the balls to control the rotation of the steel wire 2.

The working principle of the technical scheme is as follows: in order to precisely adjust the rotation angle of the steel wire 2, a rotation control device is arranged between the inner wall of the conduit 3 and the outer wall of the steel wire 2, and the rotation control device can enable the steel wire to rotate for a certain angle in one direction at a time and stay at the rotated position; then, the steel wire can be continuously rotated until the incision knife head reaches an ideal position, the rotation is stopped, and the incision knife head stays at the position and does not move any more, so that the affected part is accurately positioned.

The rotation control device can be a circle of clamping grooves fixedly arranged on the outer wall of the steel wire and a retainer with balls fixedly arranged on the corresponding position of the inner wall of the conduit, and the clamping grooves are matched with the balls to control the rotation angle of the steel wire; the steel wire is rotated by a fixed angle each time through the control handle, and then the clamping groove and the steel ball are adjusted, so that the angle of the steel wire rotated each time can be controlled, for example, the steel wire is rotated by 5 degrees, 10 degrees or 15 degrees each time. When the rotation is stopped, the steel wire is fixed by the clamping groove and cannot move, so that the incision knife is adjusted to an ideal operation position.

The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, provide rotary control device's structure in this embodiment, this rotary control device includes round draw-in groove and has the holder of ball, can 2 rotation angles of accurate adjustment steel wire, makes things convenient for medical personnel to use.

In one embodiment, further comprising: the rotation control device is arranged between the inner wall of the catheter 3 and the outer wall of the steel wire 2 and is close to the second seat pipe 132, the rotation control device comprises a ring of canine tooth structures fixedly arranged on the outer wall of the steel wire 2 and grooves fixedly arranged on corresponding positions of the inner wall of the catheter 3, and the canine tooth structures and the grooves are matched to control the rotation of the steel wire 2.

The working principle of the technical scheme is as follows: in order to precisely adjust the rotation angle of the steel wire 2, a rotation control device is arranged between the inner wall of the conduit 3 and the outer wall of the steel wire, and the rotation control device can enable the steel wire to rotate for a certain angle in one direction at a time and stay at the rotated position; then, the steel wire can be continuously rotated until the incision knife head reaches an ideal position, the rotation is stopped, and the incision knife head stays at the position and does not move any more, so that the affected part is accurately positioned.

The rotation control device can be a ring of canine tooth structures fixedly arranged on the outer wall of the steel wire and grooves fixedly arranged on the corresponding positions of the inner wall of the catheter, and the canine tooth structures and the grooves are matched to control the rotation angle of the steel wire; the angle of each rotation of the steel wire can be controlled by controlling the handle to rotate the steel wire by a fixed angle each time, and then adjusting and adjusting the canine tooth structure and the groove, for example, the angle of each rotation of the steel wire can be controlled by 5 degrees, 10 degrees or 15 degrees each time. When the rotation is stopped, the canine tooth structure on the steel wire is fixed by the groove and can not move, thereby adjusting the incision knife to an ideal operation position.

The beneficial effects of the above technical scheme are that: through the design of above-mentioned structure, provide another kind of structure of rotation control device in this embodiment, this rotation control device includes round dog tooth structure and recess, and the rotation angle that equally can accurate adjustment steel wire 2 makes things convenient for medical personnel to use.

As shown in fig. 6-13, the present invention provides an endoscopic incision knife, comprising an incision knife head 1, a steel wire 2, a conduit 3, an operation handle 4, an electrode 5 and a handle 6, wherein the incision knife head 1 is disposed on the conduit 3 and movably connected with the steel wire 2, the incision knife head 1 comprises a left knife body 1-1 and a right knife body 1-2 which can be opened and closed with each other, the left knife body 1-1 is provided with a left cutting section 1-11 and a left clamping section 1-12, the left clamping section 1-12 is located at the far end of the left cutting section 1-11, the right knife body 1-2 is provided with a right cutting section 1-21 and a right clamping section 1-22, the right clamping section 1-22 is located at the far end of the right cutting section 1-21, the left cutting section 1-11 corresponds to the right cutting section 1-21, the left clamping sections 1-12 correspond to the right clamping sections 1-22.

The working principle of the technical scheme is as follows: the utility model provides an endoscopic incision knife, which mainly comprises an incision knife head 1, a steel wire 2, a catheter 3, an operating handle 4, an electrode 5 and a handle 6, wherein when the incision knife head 1 reaches gastrointestinal lesion mucous membranes of patients, medical staff uses the operating handle 4 to control the steel wire 2 to rotate the incision knife head 1 to form a proper angle with the lesion mucous membranes, then pulls the steel wire 2 through the operating handle 4 to enable the incision knife head 1 to be in an open state, then moves the incision knife head 1 to the lesion mucous membranes, at the moment, the incision knife head 1 is divided into a left knife body 1-1 and a right knife body 1-2 which can be mutually opened and closed, it can be understood that the left knife body 1-1 and the right knife body 1-2 are rotationally connected to be like a scissors structure, the medical staff pulls the steel wire 2 through the operating handle 4 to enable the right knife body 1-2 to rotate 90 degrees towards the right side relative to the left knife body 1-1 (as shown in figure 11), the cutter head 1 is cut by this, or the medical staff pulls the steel wire 2 through the operation handle 4, so that the left cutter body 1-1 rotates 90 degrees to the left side with respect to the right cutter body 1-2 (as shown in fig. 12), so that the cutter head 1 is cut, or the medical staff pulls the steel wire 2 through the operation handle 4, so that the left cutter body 1-1 and the right cutter body 1-2 are separated and spread apart from each other (as shown in fig. 13), and an included angle formed between the left cutter body 1-1 and the right cutter body 1-2 may be 10 degrees to 180 degrees, for example, 10 degrees to 170 degrees, or any value therebetween.

In order to better electrically resect a lesion mucosa, a left cutter body 1-1 of the endoscopic incision knife is provided with a left cutting section 1-11 and a left clamping section 1-12, the left clamping section 1-12 is arranged at the far end of the cutting section 1-11, a right cutter body 1-2 is provided with a right cutting section 1-21 and a right clamping section 1-22, the right clamping section 1-22 is arranged at the far end of the right cutting section 1-21, a medical worker starts an external power supply, the electrode 5 and the steel wire 2 supply power to the incision knife head 1, so that the left knife body 1-1 and the right knife body 1-2 are closed to perform electrotomy on a pathological mucosa, that is, the left cutting section 1-11 and the right cutting section 1-21 are correspondingly closed, and the left clamping section 1-12 and the right clamping section 1-22 are correspondingly closed to finish the electric cutting;

it can be understood that the left cutter body 1-1 and the right cutter body 1-2 can support the cut tissue, so that a better visual field can be obtained, and risks of over-deep tissue cutting, perforation, bleeding and the like caused by the fact that the cut tissue cannot be observed by the lens are avoided.

The beneficial effects of the above technical scheme are that: through the design of the structure, the utility model provides an endoscopic incision knife which mainly comprises an incision knife head 1, a steel wire 2, a conduit 3, an operating handle 4, an electrode 5 and a handle 6, wherein the incision knife head 1 comprises a left knife body 1-1 and a right knife body 1-2 which can be mutually opened and closed, the left knife body 1-1 is provided with a left cutting section 1-11 and a left clamping section 1-12, the left clamping section 1-12 is positioned at the far end of the left cutting section 1-11, the right knife body 1-2 is provided with a right cutting section 1-21 and a right clamping section 1-22, the right clamping section 1-22 is positioned at the far end of the right cutting section 1-21, the endoscopic incision knife can better clamp and excise lesion mucous membranes, not only is suitable for the lesion mucous membranes on the inner walls of the concave and convex curved surfaces of the stomach and intestine, but also is not easy to cut and leak the stomach and intestine walls, thereby reducing the difficulty in excising the lesion mucous membranes, can also shorten the operation time and reduce the operation risk.

In one embodiment, the left cutting segment 1-11 is hinged to the right cutting segment 1-21;

a plurality of wavy edge teeth 1-3 are arranged on the edge of the left cutting section 1-11, a strip-shaped hole 1-23 is formed in the right cutting section 1-21, and the wavy edge teeth 1-3 can be contained in the strip-shaped hole 1-23; or the like, or, alternatively,

a plurality of wavy edge teeth 1-3 are arranged on the edge of the left cutting section 1-11 and the edge of the right cutting section 1-21.

The working principle and the beneficial effects of the technical scheme are as follows: in order to better clamp a lesion mucous membrane by the left cutter body 1-1 and the right cutter body 1-2, the left cutting section 1-11 is hinged to the right cutting section 1-21 in the embodiment so as to facilitate the opening of the incision cutter head 1, wherein, as shown in fig. 7-8, a plurality of wavy cutting teeth 1-3 are arranged on the edge of the left cutting section 1-11, and a corresponding strip-shaped hole 1-23 is arranged on the right cutting section 1-21, it can be understood that the left cutting section 1-11 is sheet-shaped, when the incision cutter head 1 is closed, the left cutter body 1-1 and the right cutter body 1-2 are also closed together, and at the moment, a plurality of wavy cutting teeth 1-3 are accommodated in the strip-shaped hole 1-23, and simultaneously, the left clamping section 1-12 and the right clamping section 1-22 are also closed together; when the cutting head 1 electrically cuts the lesion mucosa, the wavy blade teeth 1-3 on the left cutting section 1-11 electrically cut the lesion mucosa, and the right cutting section 1-21 also electrically cuts the lesion mucosa;

or as shown in fig. 9-10, a plurality of wavy edge teeth 1-3 are arranged on the edge of the left cutting section 1-11 and the edge of the right cutting section 1-21, it can be understood that the left cutting section 1-11 and the right cutting section 1-21 are both sheet-shaped, and the side edges close to or far away from each other are edge edges; when the cutting head 1 electrically cuts the lesion mucosa, the wavy blade teeth 1-3 on the left cutting section 1-11 and the wavy blade teeth 1-3 on the right cutting section 1-21 both electrically cut the lesion mucosa, and the two groups of wavy blade teeth 1-3 are more convenient to clamp the lesion mucosa and also convenient to electrically cut the lesion mucosa after being electrified.

In one embodiment, the inner surfaces of the left clamping sections 1-12 and the right clamping sections 1-22 are provided with a plurality of concave-convex clamping teeth 1-4 corresponding to each other; the outer surfaces of the left cutting section, the left clamping section, the right cutting section and the right clamping section are respectively provided with a second insulating layer 1-5, and the parts, close to the far ends of the left clamping section and the right clamping section, of the inner surfaces of the left clamping section and the right clamping section are also provided with second insulating layers 1-5 mm.

The working principle of the technical scheme is as follows: the inner surfaces of the left clamping section 1-12 and the right clamping section 1-22 are provided with a plurality of concave-convex clamping teeth 1-4 which correspond to each other, and it can be understood that the inner surfaces of the left clamping section 1-12 and the right clamping section 1-22 are regular surfaces, and the cross sections of the left clamping section 1-12 and the right clamping section 1-22 are semi-cylindrical, so that the left clamping section and the right clamping section are closed to form an integral cylinder, and of course, the cross sections of the left clamping section and the right clamping section can be triangular or square, which is not listed; that is, the cross-sectional area of the left clamping section 1-12 is larger than that of the left cutting section 1-11, the cross-sectional area of the right clamping section 1-22 is larger than that of the right cutting section 1-21, and the far ends of the left clamping section 1-12 and the right clamping section 1-22 can avoid the far ends of the left cutting section 1-11 and the right clamping section 1-22 from directly contacting with mucous membrane tissues to cause discomfort to patients;

when the left cutter body 1-1 and the right cutter body 1-2 are opened, the wavy cutting teeth 1-3 and the concave-convex clamping teeth 1-4 can hook the edge of a pathological change mucous membrane, when the left cutter body 1-1 and the right cutter body 1-2 are closed mutually, the wavy cutting teeth 1-3 and the concave-convex clamping teeth 1-4 draw the pathological change mucous membrane close to each other so as to better clamp the pathological change mucous membrane, and the pathological change mucous membrane is cut off electrically after the left cutter body 1-1 and the right cutter body 1-2 are electrified; meanwhile, in order to avoid cutting off normal mucous membrane tissues, second insulating layers 1-5 are arranged on the outer surfaces of the left cutting section, the left clamping section, the right cutting section and the right clamping section;

the parts of the inner surfaces of the left clamping section and the right clamping section, which are 1-2mm close to the far ends of the left clamping section and the right clamping section, are also provided with second insulating layers 1-5, so that the normal mucous membrane tissue and the lower layer tissue cannot be injured during electric cutting.

It is understood that the lengths of the left cutting segment 1-11, the left clamping segment 1-12, the right cutting segment 1-21 and the right clamping segment 1-22 can be determined by those skilled in the art at the time of specific manufacture, and are not listed.

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 (9)

1. An endoscope incision knife comprises an incision knife head (1), a steel wire (2), a catheter (3), an operating handle (4), an electrode (5) and a handle (6), and is characterized in that the incision knife head (1) is bent, and the incision knife head (1) is arranged on the catheter (3) and movably connected with the steel wire (2);

the incision tool bit (1) comprises a first tool body (11), a second tool body (12) and a tool apron (13), wherein a plurality of saw teeth (14) are arranged on a blade surface of the first tool body (11) facing the second tool body (12) and a blade surface of the second tool body (12) facing the first tool body (11), and the bending angle of the incision tool bit (1) is 0-50 degrees.

2. An endo-incision knife according to claim 1, characterized in that the knife holder (13) is arranged at the distal end of the catheter tube (3), and the proximal ends of the first and second knife bodies (11, 12) are movably arranged in the knife holder (13) and movably connected with the wire (2) such that the first and second knife bodies (11, 12) open and close.

3. An endo-incision knife according to claim 1 or 2, characterized in that the side faces, the back face of the first (11), the second (12) and the outer surface of the holder (13) are provided with a first insulating layer (15).

4. An endoscopic incision knife according to claim 2, wherein the knife holder (13) comprises a first holder tube (131), a second holder tube (132), a shaft (133), a first guide rod (134) and a second guide rod (135), the second holder tube (132) is arranged in the distal end of the guide tube (3), the first holder tube (131) is arranged on the proximal end of the second holder tube (132) and close to the distal end of the guide tube (3), the shaft (133) is arranged in the first holder tube (131), two opposite notch grooves (136) are arranged on the tube wall of the first holder tube (131), the notch grooves (136) extend from the proximal end to the distal end of the first holder tube (131), the proximal ends of the first knife body (11) and the second knife body (12) extend into the first holder tube (131) and are rotatably connected to the shaft (133), the first cutter body (11) is movably connected with the steel wire (2) through a first guide rod (134), the second cutter body (12) is movably connected with the steel wire (2) through the first guide rod (134), and the first cutter body (11) and the second cutter body (12) correspond to the two notch grooves (136) respectively.

5. An endoscopic incision knife according to claim 4, wherein the distal end of the first guide rod (134) is hinged to the proximal end of the first knife body (11), and the proximal end of the first guide rod (134) is hinged to the distal end of the wire (2);

the far end of the second guide rod (135) is hinged with the near end of the second cutter body (12), and the near end of the second guide rod (135) is hinged with the far end of the steel wire (2).

6. An endoscopic incision knife according to claim 4, wherein the second seat tube (132) is rotatably connected to the catheter tube (3), an outer ring (137) is arranged on the second seat tube (132), an inner ring groove (138) is arranged in the catheter tube (3), and the outer ring (137) is arranged in the inner ring groove (138) and rotatably connected to the inner ring groove (138).

7. An endoscopic incision knife comprises an incision knife head (1), a steel wire (2), a conduit (3), an operating handle (4), an electrode (5) and a handle (6), and is characterized in that the incision knife head (1) is arranged on the conduit (3) and movably connected with the steel wire (2), the incision knife head (1) comprises a left knife body (1-1) and a right knife body (1-2) which can be mutually opened and closed, a left cutting section (1-11) and a left clamping section (1-12) are arranged on the left knife body (1-1), the left clamping section (1-12) is positioned at the far end of the left cutting section (1-11), a right cutting section (1-21) and a right clamping section (1-22) are arranged on the right knife body (1-2), and the right clamping section (1-22) is positioned at the far end of the right cutting section (1-21), the left cutting section (1-11) corresponds to the right cutting section (1-21), and the left clamping section (1-12) corresponds to the right clamping section (1-22).

8. An endoscopic incision knife according to claim 7, wherein said left cutting segment (1-11) is hinged to said right cutting segment (1-21);

a plurality of wavy edge teeth (1-3) are arranged on the edge of the left cutting section (1-11), a strip-shaped hole (1-23) is formed in the right cutting section (1-21), and the wavy edge teeth (1-3) can be accommodated in the strip-shaped hole (1-23); or the like, or, alternatively,

a plurality of wavy edge teeth (1-3) are arranged on the edge of the left cutting section (1-11) and the edge of the right cutting section (1-21).

9. An endoscopic incision knife according to claim 7, wherein the inner surface of the left gripping section (1-12) and the inner surface of the right gripping section (1-22) are provided with a plurality of concave-convex gripping teeth (1-4) corresponding to each other; the outer surfaces of the left cutting section, the left clamping section, the right cutting section and the right clamping section are respectively provided with a second insulating layer (1-5), and the parts, close to the far ends of the parts by 1-2mm, of the inner surfaces of the left clamping section and the right clamping section are also provided with the second insulating layers (1-5).

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