CN216167817U

CN216167817U - Novel L-shaped inner-side electrified mucous membrane incision knife

Info

Publication number: CN216167817U
Application number: CN202122604075.9U
Authority: CN
Inventors: 冯莉; 李凡; 张晓红; 钱燕青
Original assignee: Central Hospital Of Minhang District Shanghai
Current assignee: Central Hospital Of Minhang District Shanghai
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-04-05
Anticipated expiration: 2031-10-28

Abstract

The utility model discloses a novel L-shaped inner side electrified mucous membrane incision knife, which comprises a handle, an outer tube and a knife head, wherein the knife head is meshed with the outer tube through a gear, the knife head is of a 7-shaped two-section adjustable folding knife structure, the knife head is provided with a wire knife with the inner side electrified and an insulator coated on the outer layer, a traction guide wire is connected in the outer tube, the traction guide wire is in riveting connection with the knife head, and the other end of the traction guide wire is connected to the handle.

Description

Novel L-shaped inner-side electrified mucous membrane incision knife

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a novel L-shaped inside electrified mucosa incision knife.

Background

ESD surgery, i.e. endoscopic submucosal dissection, refers to a minimally invasive technique for completely dissecting diseased mucosa from submucosa under an endoscope. ESD operation is mainly applied to diagnosis and treatment of early digestive tract tumors. Has the advantage of completely excising superficial lesions with a certain area at one time, but has high technical requirement and great difficulty. Is suitable for the diagnosis and treatment of early esophageal cancer, early gastric cancer, interstitial tumor and early colon tumor. Common complications include bleeding, perforation. The most common bleeding is achieved by washing the wound surface with cold physiological saline, direct electrocoagulation after the bleeding point is determined, hemostasis with hemostatic forceps or argon knife, etc., and blood vessel occlusion with hemostatic clip for unsuccessful patients.

Because the ESD operation is one of the operations with higher difficulty under the digestive endoscope, the operator needs to have rich endoscope experience, and the choice of the mucosa incision knife is very important, all mucosa incision knives in the current market are generally powered on integrally at the head end, and the operators with insufficient experience often generate heat injury of the muscle layer and other complications.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides the novel L-shaped inside electrified mucosa incision knife which is simple in structure, convenient to use and free of thermal injury to a muscle layer.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a novel inboard circular telegram mucous membrane incision sword of L type, includes handle, outer tube and tool bit, the tool bit passes through gear engagement with the outer tube and is connected, the tool bit is two sections adjustable folding knife structures of "7" style of calligraphy, the tool bit has the inboard line sword that can switch on and the cladding is at outer insulator, the outer tube inscription has the guide wire of pulling, it is connected for the riveting with the tool bit to pull the guide wire, the other end of pulling the guide wire is connected on the handle.

The more optimized scheme is that a novel L-shaped inside electrified mucous membrane incision knife, the end part of the outer tube is provided with an internal gear, and the internal gear and a toothed bar of a knife head are meshed and fixed after rotating, so that the angle adjustment of the knife head is realized.

The more optimized scheme is that the novel L-shaped inner side electrified mucous membrane incision knife is characterized in that the top of the outer tube is also communicated with a water outlet, the water outlet is used for flushing a bleeding position, and the water outlet is communicated with a liquid injection port fixed at the lower end of the outer tube through a water injection pipeline.

The more optimized scheme is that the novel L-shaped inner-side electrified mucosa incision knife is characterized in that a finger ring is arranged at the tail end of a handle, a push rod is sleeved on the handle in a sliding mode, and the upper end of the push rod is connected with an electrode connector.

The more optimized scheme is that a novel L-shaped inner side electrified mucous membrane incision knife, the tail end of the motion direction of the handle is rotatably connected with a rotating piece, and the rotating piece rotates the knife head through the guide wire to enable the rotating piece to be connected with the outer tube in a matched mode.

The more optimized scheme is a novel L-shaped inner side electrified mucous membrane incision knife, and the wire knife is a tensioned electrified guide wire or a spiral guide wire.

The more optimized scheme is a novel L-shaped inside electrified mucous membrane incision knife, and the head end of the outer tube is made of high-temperature-resistant ceramic materials.

The more optimized scheme is a novel L-shaped inside electrified mucous membrane incision knife, and the wire knife is connected with the insulator in a bonding, clamping and embedding or spot welding mode.

The utility model has the technical effects and advantages that: according to the technical scheme of the utility model, only the inner side knife is electrified, so that the thermal injury and other complications to the muscle layer are reduced, the pain of a patient is relieved, and the working efficiency of an operator is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic structural view of an internal gear of the present invention;

fig. 3 is a schematic view of the structure of the lower end of the insulator.

The reference signs are: 1. a handle; 2. an outer tube; 3. a cutter head; 4. a wire cutter; 5. an insulator; 6. drawing a guide wire; 7. an internal gear; 8. a water outlet; 9. a ring; 10. push rod, 11, electrode joint, 12, ratch, 13, notes liquid mouth.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

As shown in fig. 1 to 3, the novel L-shaped inside electrified mucosa incision knife comprises a handle 1, an outer tube 2 and a knife head 3, wherein the knife head 3 is meshed with the outer tube 2 through a gear, the knife head 3 is a 7-shaped two-section adjustable folding knife structure, the knife head 3 is provided with a line knife 4 which can be electrified inside and an insulator 5 coated on the outer layer, a traction guide wire 6 is connected in the outer tube 2, the traction guide wire 6 is connected with the knife head 3 in a riveting manner, and the other end of the traction guide wire 6 is connected to the handle 1.

The end part of the outer tube 2 is provided with an inner gear 7, and the inner gear 7 is meshed and fixed with a rack bar 12 of the cutter head 3 after rotating, so that the angle adjustment of the cutter head 3 is realized.

The top of the outer pipe 2 is also communicated with a water outlet 8, the water outlet 8 is used for flushing a blood level, and the water outlet 8 is communicated with a liquid injection port 13 fixed at the lower end of the outer pipe 2 through a water injection pipeline.

The tail end of the handle 1 is provided with a finger ring 9, a push rod 10 is sleeved on the handle 1 in a sliding mode, and the upper end of the push rod 10 is connected with an electrode joint 11.

The tail end of the handle 1 in the moving direction is rotatably connected with a rotating part 12, and the rotating part 12 rotates the cutter head 3 through the guide wire to be matched and connected with the outer tube 2.

The wire knife 4 is a tensioned electrified guide wire or a spiral guide wire.

The head end of the outer pipe 2 is made of high-temperature-resistant ceramic material.

The wire cutter 4 and the insulator 5 are connected by adhesion, snap-in or spot welding.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed; in the drawings of the disclosed embodiments of the utility model, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the utility model can be combined with each other without conflict; the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a novel inboard circular telegram mucosa incision sword of L type which characterized in that: including handle (1), outer tube (2) and tool bit (3), tool bit (3) are connected through gear engagement with outer tube (2), tool bit (3) are two sections adjustable folding knife structures of "7" style of calligraphy, tool bit (3) have inboard line sword (4) that can switch on and cladding at outer insulator (5), outer tube (2) inscription has the guide wire (6) of pulling, pull guide wire (6) and tool bit (3) and be connected for the riveting, the other end of pulling guide wire (6) is connected on handle (1).

2. The novel L-shaped medial electrified mucosal incision knife as claimed in claim 1, wherein: an inner gear (7) is arranged at the end part of the outer tube (2), and the inner gear (7) and a rack bar (12) of the cutter head (3) are meshed and fixed after rotating, so that the angle adjustment of the cutter head (3) is realized.

3. The novel L-shaped medial electrified mucosal incision knife as claimed in claim 2, wherein: the top of the outer pipe (2) is also communicated with a water outlet (8), the water outlet (8) is used for flushing a bleeding position, and the water outlet (8) is communicated with a liquid injection port (13) fixed at the lower end of the outer pipe (2) through a water injection pipeline.

4. The novel L-shaped medial electro-mucosal incision knife according to claim 3, wherein: the tail end of the handle (1) is provided with a finger ring (9), a push rod (10) is sleeved on the handle (1) in a sliding mode, and the upper end of the push rod (10) is connected with an electrode joint (11).

5. The novel L-shaped medial electro-mucosal incision knife according to claim 4, wherein: the tail end of the handle (1) in the moving direction is rotatably connected with a rotating piece, and the rotating piece rotates the cutter head (3) through the guide wire to enable the rotating piece to be matched and connected with the outer tube (2).

6. The novel L-shaped medial electro-mucosal incision knife of claim 5, wherein: the wire knife (4) is a tensioned electrified guide wire or a spiral guide wire.

7. The novel L-shaped medial electro-mucosal incision knife of claim 6, wherein: the head end of the outer pipe (2) is made of high-temperature-resistant ceramic material.

8. The novel L-shaped medial electro-mucosal incision knife according to claim 7, wherein: the wire knife (4) and the insulator (5) are connected in a bonding, clamping and embedding or spot welding mode.