CN107260257B

CN107260257B - Three-cavity duodenal papilla incision knife

Info

Publication number: CN107260257B
Application number: CN201710597181.4A
Authority: CN
Inventors: 郑明友
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-07-20
Filing date: 2017-07-20
Publication date: 2024-06-07
Anticipated expiration: 2037-07-20
Also published as: CN107260257A

Abstract

The invention provides a three-cavity duodenal papilla incision knife which comprises a contrast agent injection channel, a guide wire pipeline and an incision knife insertion pipeline for placing an incision knife wire, wherein the insertion part of the three-cavity duodenal papilla incision knife is of a conical structure, the part of the incision knife wire inserted into the pipeline is provided with a groove, the incision knife wire is fixed in the groove through a fixing seat, the incision knife wire is also connected with a metal wire with an insulating coating, the metal wire with the insulating coating is connected with a control handle, the incision knife wire is an elastic metal knife wire, the metal wire with the insulating coating is controlled through the control handle, and the incision knife wire is driven to move upwards under the action of the fixing seat. The invention can gradually cut the duodenal papilla from inside to outside and from bottom to top no matter how deep or shallow the cutting knife is inserted into the duodenal papilla, and simultaneously does not damage the rear wall of the duodenal papilla, thereby improving the success rate of the operation and reducing the complications of the operation.

Description

Three-cavity duodenal papilla incision knife

Technical Field

The invention relates to the technical field of medical appliances, in particular to a three-cavity duodenal papilla incision knife.

Background

Existing three-lumen duodenal papilla cutting blades generally come in two types: namely a needle type cutting knife and an arch type cutting knife, the control mode of a control handle, the power connection mode and the three-cavity catheter of the two types of cutting knives are basically the same, and the difference is only that the shapes of the cutting knife heads, namely the cutting knife wires, are different. The needle-type incision knife is used for gradually incising the duodenal papilla from top to bottom or from bottom to top on the surface of the papilla when incising the papilla through the duodenal mirror. If the experience of the operator is insufficient during the operation, the incision knife is easy to extend too long, and the thin intestinal wall at the nipple of the patient easily causes perforation of the intestinal back wall at the incision. The bow-type incision knife is used for incising the nipple from bottom to top, and has various forms, and the main differences are that: the length of the arch-shaped knife wire, the length of the insertion part of the front end of the arch-shaped knife wire, and whether the arch-shaped knife is provided with an insulating coating or not. When the opening of the nipple is not obvious and the incision knife cannot be deeply inserted into the duodenal nipple, the incision treatment cannot be performed frequently, so that the treatment fails.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a three-lumen duodenal papilla incision knife, which solves the drawbacks of the needle-type incision knife and the bow-type incision knife in the prior art.

In order to achieve the above object, the present invention is achieved by the following technical solutions:

The utility model provides a three-cavity duodenal papilla cutting knife, includes contrast medium injection way, seal wire pipeline and places the cutting knife of cutting knife silk and insert the pipeline, the insertion part of three-cavity duodenal papilla cutting knife is conical structure, and the cutting knife silk place of cutting knife insertion pipeline sets up to the recess, and cutting knife silk passes through the fixing base to be fixed in the recess, still be connected with the wire of taking insulating coating on the cutting knife silk, the wire of taking insulating coating links to each other with control handle, cutting knife silk is elastic metal knife silk, through control handle control band insulating coating's wire, and drive under the effect of fixing base cutting knife silk upward movement.

Preferably, the fixing seat comprises a fixing metal wire connected with the tail part of the cutter wire of the incision knife, and the diameter of the fixing seat is the same as the diameter of the insertion pipe of the incision knife.

Preferably, the cutter wire is parallel to the axis of the groove and is located at the bottom of the groove.

Preferably, the length between the connection point of the wire with the insulating coating and the cutter wire to the tip of the cutter wire is 2.5mm-3.5mm.

Preferably, the length between the point of attachment of the wire with the insulation coating to the cutter wire to the tip of the cutter wire is 3mm.

Preferably, the wire with the insulating coating, the fixing base, and the cutter wire are all in an axial direction of the cutter insertion pipe.

The invention at least comprises the following beneficial effects: the control handle pulls the metal wire with the insulating coating back to lift the cutter wire with the metal wire collar fixed in the concave groove; then the control handle is electrified, the cutting knife wire is contacted with the front wall of the duodenal papilla forwards, and the front wall of the duodenal papilla with the corresponding size is cut according to the requirement; when the control handle is pushed forward, the wire with the insulating coating is returned to the bottom of the groove of the incision knife insertion pipeline with the incision knife wire, so that treatment is completed; therefore, the invention can gradually cut the front wall of the duodenal papilla from inside to outside and from bottom to top no matter how deep or shallow the cutting knife is inserted into the duodenal papilla, and does not damage the rear wall of the duodenal papilla; the utility model effectively eliminates the perforation of the rear wall of the duodenal papilla which is easy to be guided when the needle-type incision knife is used for incision, and overcomes the defect that the arch-type incision knife cannot be inserted deeply, thereby improving the success rate of the operation and reducing the complication of the operation.

To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter particularly pointed out. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Furthermore, the invention is intended to include all such aspects and their equivalents.

Drawings

Other objects and attainments together with a more complete understanding of the invention will become apparent and appreciated by referring to the following description taken in conjunction with the accompanying drawings. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present invention;

fig. 2 is a schematic view of the structure of the incision knife according to the present invention when the incision knife is cut.

The contrast medium injection channel 1, the guide wire pipeline 2, the incision knife inserted into the pipeline 3, the groove 30, the incision knife wire 4, the wire with insulating coating 5 and the fixing seat 6.

The same reference numerals will be used throughout the drawings to refer to similar or corresponding features or functions.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

See fig. 1 and 2, a three-cavity duodenal papilla incision knife, including contrast medium injection way 1, seal wire pipeline 2 and place incision sword that incision knife was cut silk 4 insert pipeline 3, the insertion part of three-cavity duodenal papilla incision sword is conical structure, the incision knife silk 4 place department of inserting pipeline 3 sets up to recess 30, incision knife silk 4 passes through fixing base 6 to be fixed in recess 30, still be connected with insulating coating's wire 5 on the incision knife silk 4, insulating coating's wire 5 links to each other with the control handle, incision knife silk 4 is elastic wire, wire 5 with insulating coating is controlled through the control handle, and drive the upward motion of incision knife silk 4 under the effect of fixing base 6.

In the above-described technical solution, the portion of the cutter wire 4 where the cutter is inserted into the pipe is provided with the groove 30, so that the cutter wire 4 provided in the groove 30 can be deformed upward to protrude out of the groove 30. The cutting knife 4 is connected with the wire 5 with the insulating coating, the wire 5 with the insulating coating is connected with the control handle, and the cutting knife wire 4 can be controlled by the control handle. When the insulation coating cutting knife is in operation, the tail of the cutting knife insertion pipeline 3 is pulled by the control handle, and the metal wire 5 of the insulation coating is pulled by the control handle to move towards the tail of the cutting knife insertion pipeline, so that the cutting knife wire 4 fixed in the concave groove 30 is lifted; and then the control handle is electrified, the cutting knife wire 4 is forwards contacted with the front wall of the duodenal papilla, the corresponding size of the duodenal papilla is cut according to the requirement, and when the control handle is forwards pushed, the wire 5 with the insulating coating returns to the groove 30 with the cutting knife wire 4, so that the treatment is finished. The invention can gradually cut the duodenal papilla from inside to outside and from bottom to top no matter how deep or shallow the cutting knife is inserted into the duodenal papilla, and simultaneously does not damage the rear wall of the duodenal papilla.

In another embodiment, the fixing base 6 comprises a fixing wire connected to the tail of the incision knife wire 4, and the diameter of the fixing base 6 is the same as that of the incision knife insertion pipe 3, so that the fixing base 6 just clamps in the incision knife insertion pipe 3 to be firmly fixed in the incision knife insertion pipe 3.

In another technical scheme, the incision knife wire 4 is parallel to the axis of the groove 30 and is positioned at the bottom of the groove 30, so that the incision knife wire 4 has enough deformation space in the groove, thereby better controlling the incision point of the incision knife wire 4 during operation, facilitating the smooth operation and avoiding the knife wire from damaging the intestinal wall during the insertion of the duodenal papilla.

In another embodiment, the length between the connection point of the wire 5 with the insulating coating and the incision knife wire 4 and the tip of the incision knife wire 4 is 2.5mm-3.5mm, and the thickness of the duodenum of a person is generally about 2.2mm, so that the length is suitable for incising the duodenal papilla of a general patient. In order to improve the success rate and ease of operation, the length between the connection point of the wire 5 with an insulating coating and the incision knife wire 4 to the tip of the incision knife wire is set to 3mm.

In another technical scheme, the wire 5 with the insulating coating, the fixing seat 6 and the cutter wire 4 are all arranged in the axial direction of the cutter insertion pipeline 3, and the wire 5 with the insulating coating passes through the cutter insertion pipeline 3 to be connected with a control handle. The cutting knife is inserted into the pipeline 3 to guide the wire 5 with the insulating coating, and the wire 5 with the insulating coating is accommodated in the cutting knife insertion pipeline 3, so that the wire 5 with the insulating coating is prevented from being pulled in the operation process, and the movement track of the wire 5 with the insulating coating is prevented from being unstable, so that other parts of a patient are injured.

The triple lumen duodenal papilla incision according to the present invention is described above by way of example with reference to the accompanying drawings. It will be appreciated by those skilled in the art that various modifications may be made to the triple lumen duodenal papilla cutting knife set forth above without departing from the teachings of the present invention. Accordingly, the scope of the invention should be determined from the following claims.

Claims

1. The utility model provides a three-cavity duodenal papilla cutting knife, includes contrast medium injection way, seal wire pipeline and places the cutting knife insertion pipeline of cutting knife silk, three-cavity duodenal papilla cutting knife's insertion part is conical structure, and its characterized in that is used for from inside to outside, from the lower part upwards gradually cuts the duodenal papilla anterior wall, and the cutting knife silk place of cutting knife insertion pipeline sets up to the recess, and the cutting knife silk passes through the fixing base to be fixed in the recess, still be connected with the wire with insulating coating on the cutting knife silk, the wire with insulating coating links to each other with the control handle, the cutting knife silk is elastic wire, through the wire with insulating coating of control handle control, and drive under the effect of fixing base cutting knife silk upwards warp and stretches out the recess;

When the insulation coating wire cutting device works, the control handle is pulled to the tail of the pipeline inserted into the cutting knife, and the wire with the insulation coating is pulled by the control handle to move to the tail of the pipeline inserted into the cutting knife, so that the cutting knife wire fixed in the groove is led to deform and lift out of the groove; and then the control handle is electrified, the incision knife wire forwards contacts the front wall of the duodenal papilla to incise the duodenal papilla, and when the control handle is forwards pushed, the wire with the insulating coating returns to the groove along with the incision knife wire.

2. The three-lumen duodenal papilla cutting knife of claim 1, wherein the anchor comprises an anchor wire attached to the tail of the cutter wire, the anchor having the same diameter as the diameter of the cutter insertion tube.

3. The triple lumen duodenal papilla incision knife of claim 1, wherein the incisor wire is parallel to the axis of the groove and is located at the bottom of the groove.

4. The triple lumen duodenal papilla incision knife of claim 1, wherein the length between the point of attachment of the insulated wire to the incision knife wire and the tip of the incision knife wire is 2.5mm to 3.5mm.

5. The triple lumen duodenal papilla incision knife of claim 1, wherein the length between the point of attachment of the insulated wire to the incision knife wire to the tip of the incision knife wire is 3mm.

6. The triple lumen duodenal papilla cutting knife of claim 1, wherein the insulated wire, the anchor, and the lance wire are all in the axial direction of the lance insertion tube.