Disposable mucous membrane incision knife under endoscope

Abstract

The utility model relates to the field of mucous membrane incision knives, in particular to a disposable endoscopic mucous membrane incision knife. The utility model relates to a mucous membrane incision knife, in particular to a disposable endoscopic mucous membrane incision knife which can integrate the mucous membrane incision function and the mucous membrane injection function, shorten the time for replacing surgical instruments and prevent liquid attached to the surface of an outer sleeve from dripping to cause pollution and cross infection. A disposable mucous membrane incision knife under an endoscope comprises a handle part, a sheath tube part, a cleaning block, an electrode connector, a flushing connector, an injection connector, an outer tube, a flushing hole channel, a cutting wire, a guide wire, an injection hole channel, a fixing block, a shell, a liquid receiving box, a first fixing ring, a liquid scraping ring, a second fixing ring, a moving block, a spring and wiping cotton. The mucous membrane incision and injection device has the advantages that the mucous membrane incision and injection functions are integrated, the time for replacing surgical instruments is shortened, and meanwhile liquid attached to the surface of the outer sleeve is prevented from dripping to cause pollution and cross infection.

Description

Technical Field

[0001] The utility model relates to the field of mucosal incision knives, in particular to a disposable endoscopic mucosal incision knives. Background Art

[0002] Common incisors used for early cancer dissection on the market include needle knives, IT knives (with ceramic heads), hook knives, triangular knives, flush knives (with flushing holes in the knife head), woodpecker knives, etc. As an important means of treating gastrointestinal lesions, doctors often need to inject submucosal saline to the location of the lesion to prevent perforation during the operation during endoscopic mucosal dissection. After the injection with the injection needle, the mucosal incision knife needs to be replaced. The injected saline during the operation will be lost as the operation time passes, and the process of re-injecting saline will waste a lot of time. The loss of physiological saline during surgery cannot be replenished in time, which increases the risk of perforation during surgery. Therefore, doctors will frequently change surgical instruments during the operation to meet the different needs of each operation. At the same time, when the mucosal cutter is taken out from the patient's body after use, a lot of fluid will remain on the surface of the outer sleeve of the mucosal cutter, which is easy to drip and cause contamination and cross infection. Therefore, it is urgent to develop a disposable endoscopic mucosal cutter that can integrate mucosal cutting and injection functions into one, reduce the time for replacing surgical instruments, and prevent liquid attached to the outer sleeve surface from dripping and causing contamination and cross infection. Utility Model Content

[0003] The utility model is designed to overcome the disadvantages that surgical instruments need to be frequently replaced during surgery to perform submucosal saline injection; at the same time, when the mucosal cutter is taken out from the patient's body after use, a large amount of accumulated fluid will remain on the surface of the outer sleeve of the mucosal cutter, which is easy to drip and cause pollution and cross infection; the technical problem to be solved by the utility model is to provide a disposable endoscopic submucosal cutter that can integrate mucosal cutting and injection functions into one, reduce the time for surgical instrument replacement, and prevent liquid attached to the outer sleeve surface from dripping and causing pollution and cross infection.

[0004] The utility model is achieved by the following specific technical means:

[0005] A disposable endoscopic mucosal incision knife comprises a handle portion and a sheath portion; the handle portion comprises an electrode connector fixedly arranged on one side of the handle portion; a flushing connector fixedly connected to the handle portion is arranged on the side of the electrode connector close to the sheath portion; an injection connector fixedly connected to the handle portion is arranged on the side of the electrode connector away from the sheath portion; the sheath portion comprises an outer tube fixedly connected to the handle portion, a flushing channel is arranged at the center of the outer tube, and the flushing channel is connected to the flushing connector arranged on the handle portion; a cutting wire and a guide wire are arranged in the flushing channel arranged at the center of the outer tube, the cutting wire and the guide wire are connected to each other, and the guide wire is connected to the electrode connector arranged on the handle portion; and an injection channel penetrating the cutting wire and the guide wire is arranged at the center of the cutting wire and the guide wire, and the injection channel is connected to the injection connector arranged on the handle portion; a fixing block for limiting and fixing the cutting wire is also arranged on the flushing channel arranged on the outer tube near one end of the cutting wire; a cleaning block for cleaning the outer surface of the sheath portion is also slidably sleeved on the outer surface of the sheath portion;

[0006] The cleaning block includes a shell that is slidably sleeved on the outer surface of the sheath tube portion, and the shell is a cylindrical tube; a liquid receiving box is fixedly arranged on one side of the outer diameter surface of the shell, and the liquid receiving box is fixedly connected to the internal cavity of the shell; a first fixed ring is arranged in the shell, and the first fixed ring is fixedly connected to the inner wall of the shell; a liquid scraping ring is fixedly arranged on the inner diameter of the first fixed ring; a second fixed ring is also arranged on the side of the first fixed ring away from the liquid receiving box, and the second fixed ring is fixedly connected to the inner wall of the shell; a moving block is arranged on one side of the inner diameter of the second fixed ring, and a spring is arranged between the moving block and the second fixed ring, and the two sides of the spring are respectively fixedly connected to the second fixed ring and the moving block; a wiping cotton is fixedly arranged on the inner diameter surface of the moving block.

[0007] Furthermore, the shell is a split structure, including an upper shell and a lower shell, the upper shell and the lower shell are hinged to each other on one side by a hinge, and are buckled to each other on the other side by a snap; the corresponding first fixed ring, scraper ring, second fixed ring and movable block fixed in the shell are all split semicircular ring structures; it is convenient to install the cleaning block on the sheath part of the mucosal cutter.

[0008] Furthermore, a push ring is provided on the outer diameter surface of the shell, so that the user can push the cleaning block to slide through the push ring.

[0009] Furthermore, the scraper ring is made of silicone material, and the inner diameter surface of the scraper ring is in contact with the outer diameter surface of the outer tube of the sheath tube part, so as to facilitate scraping off the liquid attached to the outer tube surface of the sheath tube part.

[0010] Furthermore, a through groove is provided on the fixing block to facilitate the flushing liquid in the flushing channel to flow out from one end of the outer tube to flush the lesion.

[0011] Furthermore, the injection connector and the flushing connector are both Luer connectors.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model achieves the effect of integrating the mucosal incision and injection functions, reducing the time of replacing surgical instruments, and preventing the contamination and cross infection caused by the dripping of liquid attached to the surface of the outer tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional structural schematic diagram of the utility model.

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the sheath tube portion of the utility model.

[0016] Figure 3 This is a schematic diagram of the main structure of the cleaning block of the utility model.

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the cleaning block of the utility model.

[0018] The markings in the accompanying drawings are: 1-handle part, 11-electrode connector, 12-flushing connector, 13-injection connector, 2-sheath part, 21-outer tube, 22-flushing channel, 23-cutting wire, 24-guide wire, 25-injection channel, 26-fixed block, 3-cleaning block, 31-shell, 32-liquid receiving box, 33-first fixed ring, 34-scraping ring, 35-second fixed ring, 36-moving block, 37-spring, 38-wiping cotton, 311-upper shell, 312-lower shell, 313-push ring. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings: Example

[0020] Disposable endoscopic mucosal incision knife, such as Figure 1-4As shown, it includes a handle part 1 and a sheath part 2; the handle part 1 includes an electrode connector 11 fixedly arranged on one side of the handle part 1; the electrode connector 11 is provided with a flushing connector 12 fixedly connected to the handle part 1 on the side close to the sheath part 2; the electrode connector 11 is provided with an injection connector 13 fixedly connected to the handle part 1 on the side away from the sheath part 2; the sheath part 2 includes an outer tube 21 fixedly connected to the handle part 1, and a flushing channel 22 is provided at the center of the outer tube 21, and the flushing channel 22 is connected to the flushing connector 12 arranged on the handle part 1; the flushing channel 22 is provided at the center of the outer tube 21. A cutting wire 23 and a guide wire 24 are arranged inside, the cutting wire 23 and the guide wire 24 are connected to each other, and the guide wire 24 is connected to the electrode connector 11 arranged on the handle part 1; and an injection channel 25 penetrating the cutting wire 23 and the guide wire 24 is arranged at the center, and the injection channel 25 is connected to the injection connector 13 arranged on the handle part 1; the flushing channel 22 arranged on the outer tube 21 is also provided with a fixing block 26 for limiting and fixing the cutting wire 23 near one end of the cutting wire 23; a cleaning block 3 for cleaning the outer surface of the sheath tube part 2 is also slidably sleeved on the outer surface of the sheath tube part 2;

[0021] The cleaning block 3 includes a shell 31 which is slidably sleeved on the outer surface of the sheath tube portion 2, and the shell 31 is a cylindrical tube; a liquid receiving box 32 is fixedly arranged on one side of the outer diameter surface of the shell 31, and the liquid receiving box 32 is fixedly connected to the internal cavity of the shell 31; a first fixed ring 33 is arranged in the shell 31, and the first fixed ring 33 is fixedly connected to the inner wall of the shell 31; a liquid scraping ring 34 is fixedly arranged on the inner diameter of the first fixed ring 33; a second fixed ring 35 is also arranged on the side of the first fixed ring 33 away from the liquid receiving box 32, and the second fixed ring 35 is fixedly connected to the inner wall of the shell 31; a moving block 36 is arranged on one side of the inner diameter of the second fixed ring 35, and a spring 37 is arranged between the moving block 36 and the second fixed ring 35, and the two sides of the spring 37 are respectively fixedly connected to the second fixed ring 35 and the moving block 36; a wiping cotton 38 is fixedly arranged on the inner diameter surface of the moving block 36.

[0022] Working principle:

[0023] The utility model mucosal incision knife, when in use, the flushing joint 12 is docked and fixed with a common syringe, the injection joint 13 is docked and fixed with an injection pressure pump, and the electrode joint 11 is connected to an external high-frequency electric knife device to energize the guide wire 24; the front end of the sheath tube part 2 is sent into the patient's lesion, and a cutting wire 23 and a guide wire 24 are arranged in the flushing channel 22 arranged in the center of the outer tube 21 of the sheath tube part 2, and the cutting wire 23 and the guide wire 24 are connected to each other, and an injection channel 25 penetrating the cutting wire 23 and the guide wire 24 is arranged in the center of the cutting wire 23 and the guide wire 24, and the injection channel 25 is communicated with the injection joint 13 arranged on the handle part 1, and the medicine is injected into the injection pressure pump fixed to the injection joint 13. The liquid is output from the injection channel 25 set by the cutting wire 23 and the guide wire 24, and the liquid medicine is pumped out from the head of the cutting wire 23 to perform submucosal injection on the lesion to raise the position of the lesion; then, when the electrode is energized, the cutting wire 23 is pushed out, and the blade part of the cutting wire 23 is used to cut along the edge of the lesion to achieve the function of mucosal incision and stripping; at the same time, a flushing channel 22 is provided at the center of the outer tube 21 of the sheath part 2, and the flushing channel 22 is connected to the flushing connector 12 provided on the handle part 1. The liquid medicine is transported from the flushing channel 22 to the front end of the sheath part 2 through an ordinary syringe fixedly connected to the flushing connector 12, so as to flush the lesion, which is convenient for medical personnel to observe and perform mucosal incision and stripping.

[0024] At the same time, a cleaning block 3 is slidably sleeved on the outer surface of the sheath tube part 2, and the cleaning block 3 is pushed to scrape the liquid attached to the surface of the outer tube 21 of the sheath tube part 2, so as to prevent the liquid attached to the surface of the outer tube 21 from dripping when taking out and causing cross infection; when in use, the liquid receiving box 32 arranged on the cleaning block 3 is directed downward, and then the cleaning block 3 is pushed to move along the surface of the outer tube 21 by the push ring 313 arranged on the surface of the shell body 31, and the scraping ring 34 fixedly connected to the inner diameter side of the first fixed ring 33 in the shell body 31 scrapes the liquid attached to the surface of the outer tube 21, and the scraped liquid flows into the shell body 31, and flows into the liquid receiving box 32 through the through hole connected between the shell body 31 and the liquid receiving box 32 for collection, so as to facilitate subsequent centralized treatment; the outer sleeve from which the liquid is scraped by the scraping ring 34 passes between the moving block 36 arranged on the inner diameter side of the second fixed ring 35 arranged on the rear side, and the wiping cotton 38 fixedly arranged on the inner diameter surface of the moving block 36 wipes the outer tube 21 to prevent liquid residue.

[0025] Although the present disclosure has been described in detail with reference to the exemplary embodiments, the present disclosure is not limited thereto, and it will be apparent to those skilled in the art that various modifications and changes may be made thereto without departing from the scope of the present disclosure.

Claims

1. A disposable endoscopic mucosal incision knife, characterized in that: The invention comprises a handle portion (1) and a sheath portion (2); the handle portion (1) comprises an electrode connector (11) fixedly arranged on one side of the handle portion (1); a flushing connector (12) fixedly connected to the handle portion (1) is arranged on the side of the electrode connector (11) close to the sheath portion (2); an injection connector (13) fixedly connected to the handle portion (1) is arranged on the side of the electrode connector (11) away from the sheath portion (2); the sheath portion (2) comprises an outer tube (21) fixedly connected to the handle portion (1), a flushing channel (22) is arranged at the center of the outer tube (21), and the flushing channel (22) is connected to the flushing connector (12) arranged on the handle portion (1); and a flushing channel (22) arranged at the center of the outer tube (21) is arranged inside the flushing channel (22) A cutting wire (23) and a guide wire (24) are provided, the cutting wire (23) and the guide wire (24) are connected to each other, and the guide wire (24) is connected to an electrode connector (11) provided on the handle portion (1); an injection channel (25) penetrating the cutting wire (23) and the guide wire (24) is provided at the center of the cutting wire (23) and the guide wire (24), and the injection channel (25) is communicated with the injection connector (13) provided on the handle portion (1); a fixing block (26) for limiting and fixing the cutting wire (23) is also provided at one end of the flushing channel (22) provided on the outer tube (21) near the cutting wire (23); a cleaning block (3) for cleaning the outer surface of the sheath portion (2) is also slidably sleeved on the outer surface of the sheath portion (2); The cleaning block (3) comprises a shell (31) slidably sleeved on the outer surface of the sheath tube portion (2), the shell (31) being in the shape of a cylindrical tube; a liquid receiving box (32) is fixedly arranged on one side of the outer diameter surface of the shell (31), the liquid receiving box (32) being fixedly connected to the inner cavity of the shell (31); a first fixing ring (33) is arranged inside the shell (31), the first fixing ring (33) being fixedly connected to the inner wall of the shell (31); a liquid scraping ring (34) is fixedly arranged on the inner diameter of the first fixing ring (33); A second fixing ring (35) is also provided on a side of the fixing ring (33) away from the liquid receiving box (32), and the second fixing ring (35) is fixedly connected to the inner wall of the housing (31); a moving block (36) is provided on one side of the inner diameter of the second fixing ring (35), a spring (37) is provided between the moving block (36) and the second fixing ring (35), and two sides of the spring (37) are respectively fixedly connected to the second fixing ring (35) and the moving block (36); and a wiping cotton (38) is fixedly provided on the inner diameter surface of the moving block (36).

2. The disposable endoscopic mucosal incision knife according to claim 1, characterized in that: The housing (31) is a split structure, comprising an upper housing (311) and a lower housing (312); the upper housing (311) and the lower housing (312) are hinged to each other on one side by a hinge, and are buckled to each other on the other side by a buckle; the first fixing ring (33), the liquid scraping ring (34), the second fixing ring (35) and the moving block (36) fixedly arranged in the housing (31) are all split semicircular ring structures.

3. The disposable endoscopic mucosal incision knife according to claim 1, characterized in that: A push ring (313) is provided on the outer diameter surface of the housing (31).

4. The disposable endoscopic mucosal incision knife according to claim 1, characterized in that: The liquid scraping ring (34) is made of a silicone material, and the inner diameter surface of the liquid scraping ring (34) is in contact with the outer diameter surface of the outer tube (21) of the sheath tube portion (2).

5. The disposable endoscopic mucosal incision knife according to claim 1, characterized in that: The fixing block (26) is provided with a through slot.

6. The disposable endoscopic mucosal incision knife according to claim 1, characterized in that: The injection connector (13) and the flushing connector (12) are both Luer connectors.

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