Incision knife provided with air bag support and facilitating focus stripping under digestive endoscopy

Abstract

The utility model discloses an incision knife provided with an air bag support and capable of facilitating focus stripping under a digestive endoscope. The incision knife comprises an outer sheath tube and a cutting wire arranged in the outer sheath tube in a sliding mode. The device further comprises multiple sets of supporting assemblies, the multiple sets of supporting assemblies are distributed in the outer sheath tube in an annular array mode according to the center axis of the outer sheath tube, each supporting assembly comprises an air tube fixed to the side wall of the outer sheath tube, a supporting plate is arranged at the outer end of each air tube, and the supporting plates and the air tubes are connected in a sealed mode through corrugated tubes; the outer sheath tube is further provided with an inflation assembly used for inflating the interior of the air tube. According to the incision knife provided with the air bag support and facilitating focus stripping under the digestive endoscopy, in the process that the incision knife is used for carrying out a focus stripping operation under the digestive endoscopy, the supporting plate abuts against tissue at the corresponding position through the supporting assembly, the supporting effect in the air bag state is achieved, and by means of the supporting effect on peripheral tissue, the focus stripping operation under the digestive endoscopy is facilitated. And the nidus stripping operation under the digestive endoscopy can be conveniently carried out by keeping a certain visual field.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a scalpel with airbag support for facilitating the dissection of lesions under digestive endoscopy. Background Technology

[0002] The cutting blade used in endoscopic ESD cutting relies mainly on the transparent cap or traction device at the tip of the endoscope for field of vision during cutting. Its size and applicability are limited, and it may not be suitable for all lesions, and may affect the clarity of the field of vision.

[0003] Therefore, there is an urgent need for a balloon-supported incision knife that can facilitate the dissection of lesions under digestive endoscopy to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a balloon-supported incision knife that facilitates the dissection of lesions under digestive endoscopy, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cuff-supported cutting knife for convenient endoscopic lesion dissection, comprising an outer sheath and a cutting wire slidably disposed within the outer sheath; further comprising: multiple sets of support components, the multiple sets of support components being arranged in a ring array within the outer sheath along the central axis of the outer sheath, each support component including a trachea fixed to the side wall of the outer sheath, the outer end of the trachea being provided with a support plate, the support plate and the trachea being sealed and connected by a corrugated pipe; the outer sheath is also provided with an inflation component for inflating the inside of the trachea.

[0006] Compared with the prior art, the beneficial effects of this utility model are:

[0007] This invention relates to a balloon-supported incision knife for convenient endoscopic lesion removal in digestive tracts. During endoscopic lesion removal surgery, the incision knife tip is inserted to the designated position through the cooperation of the outer sheath and the cutting wire. After the incision knife is inserted, the support component allows the support plate to abut against the corresponding tissue, providing balloon-like support. By supporting the surrounding tissue, a certain field of vision is maintained for endoscopic lesion removal. Throughout the support process, the size of the support and the inflation effect are matched to adapt to different fields of vision. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0009] Figure 2 This is a schematic diagram of the structure of the inflation component and sealing component of this utility model;

[0010] Figure 3 This is a schematic diagram of the structure of the support component, connecting component and guiding component of this utility model.

[0011] In the diagram: 101, outer sheath; 102, cutting wire; 201, sleeve; 202, slide rod; 301, air tube; 302, bellows; 303, support plate; 401, fixing frame; 402, spring; 501, inflation chamber; 502, piston plate; 503, push rod; 601, annular mounting groove; 602, sealing ring. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Please see Figure 1-3 The present invention provides a scalpel with air-supported incision for easy dissection of lesions under digestive endoscopy, comprising an outer sheath 101 and a cutting wire 102 slidably connected to the outer sheath 101.

[0014] It is worth noting here that the outer sheath tube 101 and the cutting wire 102 are prior art in this application, and their working principle and operation method are prior art in this application, and will not be described in detail here;

[0015] Multiple sets of support components are arranged in a ring array inside the outer sheath 101 along the central axis. Each support component includes a trachea 301 fixed to the side wall of the outer sheath 101. A support plate 303 is provided at the outer end of the trachea 301. The support plate 303 and the trachea are sealed together by a corrugated pipe 302. An inflation component for inflating the trachea 301 is also provided on the outer sheath 101.

[0016] It should be noted that during endoscopic lesion removal surgery using a cutting blade, the outer sheath 101 and the cutting wire 102 work together to insert the cutting blade tip into the designated position. After insertion, the support assembly allows the support plate 303 to abut against the corresponding tissue, providing air-cushion support. This support of surrounding tissues facilitates maintaining a certain field of vision for endoscopic lesion removal. Throughout the support process, the size of the support and the inflation effect are matched to adapt to different fields of vision. Multiple sets of support components arranged in a ring array ensure effective support.

[0017] The inflation assembly includes an inflation chamber 501 located inside the outer sheath tube 101. Each set of air pipes 301 communicates with the interior of the inflation chamber 501. A piston plate 502 is slidably connected inside the inflation chamber 501. A sealing assembly is provided between the piston plate 502 and the inflation chamber 501. A push rod 503 for pushing the piston plate 502 against it is slidably connected to the outer sheath tube 101. A connecting assembly for connecting the support plate 303 during inflation is provided inside the air pipe 301.

[0018] The piston plate 502 is pushed by the push rod 503 to move inside the inflation chamber 501. During the movement of the piston plate 502, part of the gas inside the inflation chamber 501 is squeezed and transported to the inside of each group of air pipes 301 to inflate the inside of the air pipes 301.

[0019] The sealing assembly includes an annular mounting groove 601 formed on the outer side of the piston plate 502, and a sealing ring 602 is fitted on the annular mounting groove 601.

[0020] It should be noted here that the sealing ring 602 inside the annular mounting groove 601 ensures the sealing between the piston plate 502 and the inflation chamber 501.

[0021] The connecting assembly includes a fixing frame 401 fixed inside the air tube 301. A spring 402 that can be reset to be connected to the support plate 303 is provided between the fixing frame 401 and the support plate 303. A guide assembly for assisting the stable movement of the support plate 303 is provided on the fixing frame 401.

[0022] It should be noted that during the inflation and pushing of the support plate 303, the spring 402 is deformed by the force and generates elastic force. The elastic force of the spring 402 facilitates the subsequent repositioning of the support plate 303.

[0023] The guide assembly includes a sleeve 201 fixed to a fixing frame 401, a slide rod 202 slidably connected inside the sleeve 201, the outer end of the slide rod 202 being fixed to the inner side of the support plate 303, and a spring 402 sleeved on the outer side of the sleeve 201 and the slide rod 202.

[0024] It should be noted that during the process of inflating the air tube 301 to move the support plate 303 away from the air tube 301, the movement of the support plate 303 causes the slide rod 202 to slide on the sleeve 201. During the sliding process, the interaction between the sleeve 201 and the slide rod 202 facilitates the stable movement of the support plate 303 after being subjected to force, and further facilitates more precise support.

[0025] Working principle: During the endoscopic lesion removal surgery using a cutting knife, the cutting knife tip is inserted to the designated position through the cooperation of the outer sheath 101 and the cutting wire 102.

[0026] After the incision knife is inserted, the piston plate 502 is pushed by the push rod 503 to move inside the inflation chamber 501. During the movement of the piston plate 502, some of the gas inside the inflation chamber 501 is squeezed and delivered to the inside of each group of trachea 301 to inflate the inside of the trachea 301. During the inflation process, through the pressure inside the trachea 301 and the telescopic connection between the corrugated tube 302 and the support plate 303, the support plate 303 is forced to move away from the trachea 301. During the movement, the support plate 303 is pressed against the tissue at the corresponding position, which achieves the support effect of the airbag. By supporting the surrounding tissue, it is convenient to maintain a certain field of vision for endoscopic lesion dissection. In addition, the size of the support matches the inflation effect throughout the support process, which can adapt to different field of vision support effects.

[0027] During the process of inflating the trachea 301 to move the support plate 303 away from the trachea 301, the movement of the support plate 303 drives the slide rod 202 to slide on the sleeve 201. During the sliding process, the interaction between the sleeve 201 and the slide rod 202 facilitates the stable movement of the support plate 303 after being subjected to force, and further facilitates more precise support.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A balloon-supported incision knife for convenient endoscopic dissection of lesions in the digestive system, characterized in that, include: The outer sheath (101) and the cutting wire (102) slidably disposed inside the outer sheath (101); It also includes: multiple sets of support components, which are arranged in a ring array inside the outer sheath (101) along the central axis of the outer sheath (101). The support components include a trachea (301) fixed to the side wall of the outer sheath (101). A support plate (303) is provided at the outer end of the trachea (301). The support plate (303) and the trachea are sealed together by a corrugated pipe (302). An inflation component for inflating the inside of the trachea (301) is also provided on the outer sheath (101).

2. The balloon-supported incision knife for convenient endoscopic lesion dissection according to claim 1, characterized in that: The inflation assembly includes an inflation chamber (501) located inside the outer sheath (101), and each set of air pipes (301) communicates with the interior of the inflation chamber (501). A piston plate (502) is slidably connected inside the inflation chamber (501), and a sealing assembly is provided between the piston plate (502) and the inflation chamber (501). A push rod (503) for pushing the piston plate (502) against the outer sheath (101) is slidably connected to the outer sheath (101), and a connecting assembly for connecting the support plate (303) during inflation is provided inside the air pipe (301).

3. The balloon-supported incision knife for convenient endoscopic lesion dissection according to claim 2, characterized in that: The sealing assembly includes an annular mounting groove (601) formed on the outside of the piston plate (502), and a sealing ring (602) is fitted on the annular mounting groove (601).

4. The balloon-supported incision knife for convenient endoscopic lesion dissection according to claim 2, characterized in that: The connecting assembly includes a fixing frame (401) fixed inside the air tube (301), and a spring (402) that can be reset between the fixing frame (401) and the support plate (303) is provided. The fixing frame (401) is provided with a guide assembly for stabilizing the movement of the support plate (303).

5. The balloon-supported incision knife for convenient endoscopic lesion dissection according to claim 4, characterized in that: The guide assembly includes a sleeve (201) fixed on a fixing frame (401), a slide rod (202) slidably connected inside the sleeve (201), the outer end of the slide rod (202) being fixed to the inner side of the support plate (303), and a spring (402) sleeved on the outer side of the sleeve (201) and the slide rod (202).

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