CN210990692U

CN210990692U - Stomach polyp resection device for treating gastric precancerous lesions

Info

Publication number: CN210990692U
Application number: CN201921744094.8U
Authority: CN
Inventors: 李佃贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-07-14
Anticipated expiration: 2029-10-17

Abstract

The utility model discloses a pathological change stomach polyp resection device before treatment stomach cancer relates to medical instrument technical field. The electrocoagulation device comprises an electrocoagulation component, wherein the electrocoagulation component comprises an electrocoagulation head, a connecting conduit, a handle and an electrode, the front end of the connecting conduit is fixed with the electrocoagulation head, the rear end of the connecting conduit is fixed with the handle, the electrode is fixed on the handle, a lead is arranged in the connecting conduit, the electrocoagulation head is electrically connected with the electrode through the lead, and a negative pressure hose is sleeved on the outer side of the front part of the connecting conduit; the inner diameter of the negative pressure hose is larger than the outer diameter of the connecting conduit; arc elastic sheets are uniformly distributed at the front end of the negative pressure hose along the circumferential direction; the rear end of the negative pressure hose is fixedly communicated with a supporting sleeve in a matching way. The utility model has the advantages that: it can conveniently restrain and position polyp, reduces the operation degree of difficulty.

Description

Stomach polyp resection device for treating gastric precancerous lesions

Technical Field

The utility model relates to the technical field of medical equipment.

Background

Gastric polyps, which are precancerous lesions of the stomach, are usually removed by an electrocoagulation method, and common instruments comprise a thermal biopsy forceps, a spherical electrocoagulation head and the like. However, due to the peristalsis of the stomach, the electrocoagulation instrument is difficult to accurately position, so that the problem of stomach cauterization and perforation is easily caused, and medical accidents are caused.

Retrieval and discovery chinese patent application No. 201320604741.1 discloses a polyp remover which reduces the problem of stomach cauterization and perforation by using an outer tube to cover the polyp and combining the negative pressure suction effect on the polyp, however, in this solution, in order to prevent the peristalsis of the stomach to carry the polyp away from the outer tube and to maintain the continuous negative pressure suction effect on the polyp, the outer tube needs to be kept against the stomach wall all the time, the operation difficulty is large, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the technique that exists is not enough to the aforesaid, provides a pathological change stomach polyp resection device before the treatment stomach cancer, and it can conveniently be fixed a position polyp restraint, reduces the operation degree of difficulty.

The utility model adopts the technical proposal that: the device comprises an electrocoagulation component, wherein the electrocoagulation component comprises an electrocoagulation head, a connecting conduit, a handle and an electrode, the front end of the connecting conduit is fixed with the electrocoagulation head, the rear end of the connecting conduit is fixed with the handle, the electrode is fixed on the handle, a lead is arranged in the connecting conduit, the electrocoagulation head is electrically connected with the electrode through the lead, and a negative pressure hose is sleeved on the outer side of the front part of the connecting conduit; the inner diameter of the negative pressure hose is larger than the outer diameter of the connecting conduit; arc elastic sheets are uniformly distributed at the front end of the negative pressure hose along the circumferential direction; the rear end of the negative pressure hose is fixedly communicated with a supporting sleeve in a matching way; the upper side of the rear part of the support sleeve is fixedly communicated with a mouthpiece; a handle is fixed on the lower side of the rear part of the support sleeve; a sealing cap is sleeved at the rear end of the supporting sleeve in a threaded manner; a sealing ring is arranged between the sealing cap and the supporting sleeve; the connecting conduit penetrates through the sealing cap and is correspondingly matched with the sealing ring in a sealing way; a constraint limiting mechanism is arranged outside the negative pressure hose;

the constraint limiting mechanism comprises an outer sheath hose which is sleeved outside the negative pressure hose in a sliding manner; the front end of the outer sheath hose is fixedly communicated with an installation sleeve in a matching way, and the rear end of the outer sheath hose is fixedly communicated with a positioning sleeve in a matching way; the positioning sleeve is in threaded connection with a set screw; the set screw corresponds to the outer wall of the support sleeve; the mounting sleeve is internally provided with a bell mouth structure; the inner diameter of the front end of the mounting sleeve is larger than that of the rear end; the front end in the mounting sleeve is provided with a plurality of criss-cross elastic lines; both ends of the elastic line are correspondingly fixed on the front side of the inner wall of the mounting sleeve.

Further optimizing the technical scheme, the mouthpiece of the cutting device for treating gastric precancerous lesion gastric polyp is positioned in front of the grip; the interface tube corresponds to the rear end of the positioning sleeve.

Further optimizing the technical scheme, the outer wall of the negative pressure hose and the outer wall of the supporting sleeve of the cutting device for treating gastric precancerous lesion gastric polyp are coated with Teflon coatings.

The beneficial effects of the utility model reside in that:

1. the elastic sheet can expand and prop the elastic thread, so that polyp can smoothly enter the installation sleeve; the upper side of the rear part of the support sleeve is fixedly communicated with a mouthpiece which can be connected with an external negative pressure generator, so that a negative pressure effect is generated in the negative pressure hose, and the polypus is sucked under negative pressure; the electrocoagulation head of the electrocoagulation component can electrocoagulatively cauterize polyps to achieve the purpose of removing the polyps; through the sliding of the negative pressure hose along the outer sheath hose, the elastic sheet can move backwards, the expanding effect on the elastic wires is removed, and the elastic wires recover the criss-cross net structure, so that the net structure defined by restricting polyps is formed by the elastic wires, and the electrocoagulation removing operation is facilitated.

2. The elastic sheet can be ensured to be positioned at a position for expanding the elastic line by blocking the positioning sleeve by the interface tube; the outer wall of the negative pressure hose and the outer wall of the support sleeve are coated with Teflon coatings, so that friction can be reduced, and the negative pressure hose and the support sleeve can conveniently slide in the sheath hose.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the working state of the present invention;

fig. 3 is a partially exploded view of the constraint definition mechanism.

In the figure, 1, an electrocoagulation head; 2. connecting a conduit; 3. a handle; 4. an electrode; 5. a wire; 6. a negative pressure hose; 7. an elastic sheet; 8. a support sleeve; 9. a mouthpiece; 10. a grip; 11. a sealing cap; 12. a seal ring; 13. a sheath hose; 14. installing a sleeve; 15. a positioning sleeve; 16. tightening the screw; 17. and (4) elastic threads.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-2, a gastric polyp resection device for treating gastric precancerous lesions comprises an electrocoagulation component, wherein the electrocoagulation component comprises an electrocoagulation head 1, a connecting conduit 2, a handle 3 and an electrode 4, the front end of the connecting conduit 2 is fixed with the electrocoagulation head 1, the rear end of the connecting conduit 2 is fixed with the handle 3, the electrode 4 is fixed on the handle 3, a lead 5 is arranged in the connecting conduit 2, the electrocoagulation head 1 is electrically connected with the electrode 4 through the lead 5, and a negative pressure hose 6 is sleeved on the outer side of the front part of the connecting conduit 2; the inner diameter of the negative pressure hose 6 is larger than the outer diameter of the connecting conduit 2; arc-shaped elastic sheets 7 are uniformly distributed at the front end of the negative pressure hose 6 along the circumferential direction; the rear end of the negative pressure hose 6 is fixedly communicated with a support sleeve 8 in a matching way; the upper side of the rear part of the support sleeve 8 is fixedly communicated with a mouthpiece 9; a handle 10 is fixed on the lower side of the rear part of the support sleeve 8; the rear end of the support sleeve 8 is in threaded sleeve connection with a sealing cap 11; a sealing ring 12 is arranged between the sealing cap 11 and the support sleeve 8; the connecting conduit 2 penetrates through the sealing cap 11 and is correspondingly matched with the sealing ring 12 in a sealing way; a constraint limiting mechanism is arranged outside the negative pressure hose 6;

as shown in fig. 3, the restriction limiting mechanism includes an outer sheath hose 13 slidably fitted over the outside of the negative pressure hose 6; the front end of the sheath hose 13 is fixedly communicated with an installation sleeve 14 in a matching way, and the rear end of the sheath hose is fixedly communicated with a positioning sleeve 15 in a matching way; a set screw 16 is connected to the positioning sleeve 15 through threads; the set screw 16 corresponds to the outer wall of the support sleeve 8; the mounting sleeve 14 is internally of a bell mouth structure; the inner diameter of the front end of the mounting sleeve 14 is larger than that of the rear end; the front end inside the mounting sleeve 14 is provided with a plurality of criss-cross elastic lines 17; two ends of the elastic line 17 are correspondingly fixed on the front side of the inner wall of the mounting sleeve 14; the mouthpiece 9 is located in front of the grip 10; the interface tube 9 corresponds to the rear end of the positioning sleeve 15; the outer wall of the negative pressure hose 6 and the outer wall of the supporting sleeve 8 are coated with Teflon coatings.

Before being delivered into the stomach of a patient, the positioning sleeve 15 slides backwards along the support sleeve 8 to a position blocked by the mouthpiece 9, as shown in fig. 1, and then the set screw 16 is tightened to fix the positioning sleeve 15 and the support sleeve 8, wherein the elastic sheet 7 is pressed against the elastic line 17; the elastic sheet 7 is pulled to enable the front end of the elastic sheet 7 to stretch into the gap in the middle of the net-shaped structure formed by the elastic lines 17, the elastic lines 17 are expanded through the elastic force of the elastic sheet 7, the elastic force of the elastic sheet 7 is larger than the elastic force of the elastic lines 17, and the structure of the horn mouth in the installation sleeve 14 can facilitate the expansion and the placement of the elastic lines 17.

The application is then delivered into the patient's stomach and maneuvered with the aid of an endoscope. Firstly, the polyp is sleeved in the mounting sleeve 14, then the set screw 16 is unscrewed, the negative pressure hose 6 slides backwards along the outer sheath hose 13, as shown in figure 2, the elastic sheet 7 moves backwards, the expanding and supporting effect on the elastic wire 17 is removed, the elastic wire 17 can recover a criss-cross net structure, so that polyp restriction is limited in the mounting sleeve 14, then the set screw 16 is screwed, the catheter 2 is connected in a sliding manner, and the electrocoagulation head 1 can carry out electrocoagulation elimination operation on the polyp. In the process, polyp is blocked and limited in the mounting sleeve 14 by the elastic thread 17, the polyp cannot be easily separated from the mounting sleeve 14 due to peristalsis of the stomach wall, so that the mounting sleeve 14 does not need to be continuously propped against the stomach wall at the moment, the operation difficulty is reduced, the net-shaped structure formed by the elastic thread 17 can pull the polyp by holding the handle 10 to be properly pulled outwards, the polyp is properly far away from the stomach wall, the root of the polyp is properly stretched and exposed, the polyp is conveniently electrocoagulated and eliminated, the safety is improved, and the risk that the stomach wall is burnt is reduced.

Of course, in the application, the mouthpiece 9 can be connected with an external negative pressure generator to generate a negative pressure effect in the negative pressure hose 6, so that the polypus is sucked under the negative pressure; however, since the mounting sleeve 14 is required to be continuously pressed against the stomach wall during the negative pressure suction, the longer the time is, the more difficult the operation is, and thus the negative pressure suction process is suitable for use when smaller polyps are removed (the smaller the polyps are, the shorter the electrocoagulation time of the electrocoagulation head 1 is).

In this technical scheme, elasticity line 17 can adopt the nylon material, when having elasticity, high temperature resistant, and the line is still durable when footpath is less moreover.

Claims

1. The utility model provides a pathological change stomach polyp resection device before treatment stomach cancer, including the electricity congeals subassembly, the electricity congeals subassembly includes electricity congeals head (1), connecting tube (2), handle (3), electrode (4), connecting tube (2) front end is fixed with electricity congeals head (1), the rear end is fixed with handle (3), electrode (4) are fixed on handle (3), be provided with wire (5) in connecting tube (2), electricity congeals head (1) and electrode (4) and passes through wire (5) electric connection, its characterized in that: the outside of the front part of the connecting conduit (2) is sleeved with a negative pressure hose (6); the inner diameter of the negative pressure hose (6) is larger than the outer diameter of the connecting conduit (2); arc-shaped elastic sheets (7) are uniformly distributed at the front end of the negative pressure hose (6) along the circumferential direction; the rear end of the negative pressure hose (6) is fixedly communicated with a supporting sleeve (8) in a matching way; the upper side of the rear part of the support sleeve (8) is fixedly communicated with a mouthpiece (9); a handle (10) is fixed on the lower side of the rear part of the support sleeve (8); a sealing cap (11) is sleeved at the rear end of the support sleeve (8) in a threaded manner; a sealing ring (12) is arranged between the sealing cap (11) and the support sleeve (8); the connecting conduit (2) penetrates through the sealing cap (11) and is correspondingly matched with the sealing ring (12) in a sealing way; a constraint limiting mechanism is arranged outside the negative pressure hose (6);

the restriction limiting mechanism comprises an outer sheath hose (13) which is sleeved outside the negative pressure hose (6) in a sliding manner; the front end of the outer sheath hose (13) is fixedly communicated with an installation sleeve (14) in a matching way, and the rear end of the outer sheath hose is fixedly communicated with a positioning sleeve (15) in a matching way; a set screw (16) is connected to the positioning sleeve (15) in a threaded manner; the set screw (16) corresponds to the outer wall of the support sleeve (8); the inside of the mounting sleeve (14) is of a bell mouth structure; the inner diameter of the front end of the mounting sleeve (14) is larger than that of the rear end; the front end inside the mounting sleeve (14) is provided with a plurality of criss-cross elastic lines (17); two ends of the elastic line (17) are correspondingly fixed on the front side of the inner wall of the mounting sleeve (14).

2. The resection device for gastric polyps for treating gastric precancerous lesions according to claim 1, wherein: the interface tube (9) is positioned in front of the grip (10); the interface tube (9) corresponds to the rear end of the positioning sleeve (15).

3. The resection device for gastric polyps for treating gastric precancerous lesions according to claim 1, wherein: the outer wall of the negative pressure hose (6) and the outer wall of the support sleeve (8) are coated with Teflon coatings.