CN202699275U - High frequency cutting knife - Google Patents
High frequency cutting knife Download PDFInfo
- Publication number
- CN202699275U CN202699275U CN 201220223968 CN201220223968U CN202699275U CN 202699275 U CN202699275 U CN 202699275U CN 201220223968 CN201220223968 CN 201220223968 CN 201220223968 U CN201220223968 U CN 201220223968U CN 202699275 U CN202699275 U CN 202699275U
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- China
- Prior art keywords
- conduit
- shredding
- diameter
- high frequency
- incision knife
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- Expired - Fee Related
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Abstract
A high frequency cutting knife is disclosed, comprising a lead tube and a shredding cutter that are fixedly connected with each other, wherein the cutting knife is led to be inserted into the alimentary canal through the lead tube, the tissue is cut and is subjected to electrocoagulation through the shredding cutter, the diameter of the head part area of the lead tube is smaller than the diameter of the tube body of the lead tube, the conical-shaped front end of the lead tube gradually shrinks in size, and the front end face of the lead tube is a smooth cambered surface. The high frequency cutting knife is advantageous in that the high frequency cutting knife can be easily inserted into the duodenal papilla, and the cutting knife is convenient in operation.
Description
Technical field
This utility model relates to Digestive System Department medical device technology and field, specifically the high frequency incision knife used of a kind of duodenum endoscopic surgery.
Background technology
Through duodenoscope antidromicity ductus pancreaticus, cholangiography (ERCP), that duodenoscope is inserted to the duodenum section of falling, appear ductus pancreaticus, bile duct at the vater's papilla of enteric cavity medial wall opening, insert angiography catheter through duodenoscope treatment duct, insert the common opening of pancreatic duct or successively enter respectively ductus pancreaticus, bile duct through the nipple opening, injection of contrast medium, the method that under x-ray, ductus pancreaticus, bile duct is checked.
Through duodenoscope Endoscopic Sphincterotomy of Duodenal Papilla Attached art (EST), be on the basis of diagnosis ERCP technology, what further develop utilizes special-purpose high-frequency electrical incision knife with a kind for the treatment of technology of vater's papilla sphincter and the incision of common bile duct end portion under scope.
Vater's papilla comprises main nipple and additional teat, and main nipple claims again vater's papilla or watt nipple usually.It often is positioned at back medial wall, descendant duodenum stage casing, and apart from the about 10cm of stomach pylorus place, form is the nipple type mostly.Described papillotomy mainly all refers to the incision of main nipple.Under the duodenum camera lens, the position of main nipple all is similar to 12 positions usually at the center.Lift under the adjusting of pincers device in the guiding of duodenoscope and front end, doctor's operating apparatus high frequency incision knife is inserted in the nipple, and logical high-frequency electrical realizes the cutting of tissue and solidifies.
In the last few years, clinically usually run into such situation:
When the doctor inserted vater's papilla with high frequency incision knife front end conductor housing under scope, because the external diameter of conductor housing is thicker, soft motility was inadequate, and the successful that causes inserting nipple is not high, impact operation efficient; And very easily insert the dyspepsia due to improper feeding head, probably cause the generation of the complication such as pancreatitis.
In addition, when keeping under the motionless state of seal wire, the doctor because the smaller injection thrust that causes of the injection tract of existing high frequency incision knife is larger, makes troubles to medical personnel's operation when using injecting cavity.
The utility model content
For overcoming the above-mentioned shortcoming of prior art, this utility model provides a kind of and can easily insert in the vater's papilla, easy to operate high frequency incision knife.
A kind of high frequency incision knife comprises that the guiding incision knife inserts gastral conduit and tissue is cut shredding with electric coagulation, and shredding is fixedly connected with conduit;
It is characterized in that: the diameter of the head zone of conduit is less than the diameter of conduit pipe shaft, and the front end of conduit is coniform convergent, and the front end face of conduit is smooth arc-shaped surface.
Further, have the injecting cavity of the guidewire lumen of passing for seal wire, delivery injection liquid and the fixing shredding chamber of shredding in the conduit, separate between guidewire lumen, injecting cavity and the shredding chamber.
Further, the diameter of guidewire lumen is maximum, and the diameter in shredding chamber is minimum, and the diameter of injecting cavity is greater than the diameter in shredding chamber and less than the diameter of guidewire lumen.
Further, conduit is connected with shredding and is arc, and the shredding intracavity is fixed with capillary tube, and shredding is fixedly connected with capillary tube.
Technical conceive of the present utility model is: make the head zone diameter of conduit less than the diameter of conduit pipe shaft, enter vater's papilla thereby be convenient to catheter head, increase the motility of incision knife.
Make the front end of conduit be conical convergent, be convenient to conduit and enter vater's papilla, and because front end face is smooth cambered surface, can not lose tissue.
Separate between guidewire lumen in the conduit and the injecting cavity, seal wire can not take the space of injecting cavity, and the thrust when reducing injection makes things convenient for medical personnel to operate.
The utlity model has and easily to insert in the vater's papilla easy to operate advantage.
Description of drawings
Fig. 1 is sketch map of the present utility model.
Fig. 2 is duodenum videoendoscopic surgery physiological structure sketch map.
Fig. 3 is the sketch map of high frequency incision knife head.
Fig. 4 is the cutaway view of conduit.
The specific embodiment
By reference to the accompanying drawings, further specify this utility model:
A kind of high frequency incision knife comprises that the guiding incision knife inserts gastral conduit 1 and tissue is cut shredding 2 with electric coagulation, and shredding 2 is fixedly connected with conduit 1;
The diameter of the head zone 11 of conduit 1 is less than the diameter of conduit 1 pipe shaft, and the front end 12 of conduit 1 is coniform convergent, and the front end face of conduit 1 is smooth arc-shaped surface.
Have the injecting cavity 1B of the guidewire lumen 1A that passes for seal wire, delivery injection liquid and the fixing shredding chamber 1C of shredding 2 in the conduit 1, separate between guidewire lumen 1A, injecting cavity 1B and the shredding chamber 1C.Seal wire guiding incision knife inserts in the digestive tract, and conduit 1 passes the instrument channel of endoscope.
The diameter of guidewire lumen 1A is maximum, and the diameter of shredding chamber 1C is minimum, and the diameter of injecting cavity 1B is greater than the diameter of shredding chamber 1C and less than the diameter of guidewire lumen 1A.
The length of the head zone 11 of conduit 1 is 10CM.
Conduit 1 is connected with shredding to connect and is arc, is fixed with capillary tube 3 in the 1C of shredding chamber, and shredding 2 is fixedly connected with capillary tube 3.Shredding 2 and capillary tube 3 are adhesively fixed by mechanical crimping or laser weld or medium; The outer surface of capillary tube 3 embeds in the shredding chamber 1C, capillary tube 3 and shredding chamber 1C interference fit.
Technical conceive of the present utility model is: make head zone 11 diameters of conduit 1 less than the diameter of conduit 1 pipe shaft, enter vater's papilla thereby be convenient to conduit 1 head, increase the motility of incision knife.
Make the front end of conduit 1 be conical convergent, be convenient to conduit 1 and enter vater's papilla, and because front end face is smooth cambered surface, can not lose tissue.
Separate between guidewire lumen 1A in the conduit 1 and the injecting cavity 1B, seal wire can not take the space of injecting cavity, and the thrust when reducing injection makes things convenient for medical personnel to operate.
The utlity model has and easily to insert in the vater's papilla easy to operate advantage.
The described content of this description embodiment only is enumerating the way of realization of utility model design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also reaches the equivalent technologies means that design can be expected according to this utility model in those skilled in the art.
Claims (4)
1. high frequency incision knife comprises that the guiding incision knife inserts gastral conduit and tissue is cut shredding with electric coagulation, and shredding is fixedly connected with conduit;
It is characterized in that: the diameter of the head zone of conduit is less than the diameter of conduit pipe shaft, and the front end of conduit is coniform convergent, and the front end face of conduit is smooth arc-shaped surface.
2. high frequency incision knife as claimed in claim 1 is characterized in that: have the injecting cavity of the guidewire lumen of passing for seal wire, delivery injection liquid and the fixing shredding chamber of shredding in the conduit, and separate between guidewire lumen, injecting cavity and the shredding chamber.
3. high frequency incision knife as claimed in claim 2 is characterized in that: the diameter of guidewire lumen is maximum, and the diameter in shredding chamber is minimum, and the diameter of injecting cavity is greater than the diameter in shredding chamber and less than the diameter of guidewire lumen.
4. such as the described high frequency incision knife of one of claim 1-3, it is characterized in that: conduit is connected with shredding and is arc, and the shredding intracavity is fixed with capillary tube, and shredding is fixedly connected with capillary tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220223968 CN202699275U (en) | 2012-05-17 | 2012-05-17 | High frequency cutting knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220223968 CN202699275U (en) | 2012-05-17 | 2012-05-17 | High frequency cutting knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202699275U true CN202699275U (en) | 2013-01-30 |
Family
ID=47579624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220223968 Expired - Fee Related CN202699275U (en) | 2012-05-17 | 2012-05-17 | High frequency cutting knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202699275U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110051423A (en) * | 2019-05-31 | 2019-07-26 | 台州恩泽医疗中心(集团) | A kind of pylorus coagulation chisel for treating congenital hypertrophic pylorostenosis |
| WO2023216887A1 (en) * | 2022-05-09 | 2023-11-16 | 精微致远医疗科技(武汉)有限公司 | Cannulation device for visualization and method for using same |
-
2012
- 2012-05-17 CN CN 201220223968 patent/CN202699275U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110051423A (en) * | 2019-05-31 | 2019-07-26 | 台州恩泽医疗中心(集团) | A kind of pylorus coagulation chisel for treating congenital hypertrophic pylorostenosis |
| WO2023216887A1 (en) * | 2022-05-09 | 2023-11-16 | 精微致远医疗科技(武汉)有限公司 | Cannulation device for visualization and method for using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20140517 |