CN211750030U

CN211750030U - Bow-shaped knife for duodenal papilla

Info

Publication number: CN211750030U
Application number: CN201921907238.7U
Authority: CN
Inventors: 胥明; 陶桓青; 徐庆
Original assignee: Zhejiang Chuangxiang Medical Technology Co ltd
Current assignee: Zhejiang Chuangxiang Medical Technology Co ltd
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-10-27
Anticipated expiration: 2029-11-06

Abstract

The utility model discloses an arch-shaped sword for duodenal papilla, including outer sheath pipe, first ring, two second rings, the core bar, the end cap, conductive plug, shred, the rear end at the core bar is established to first ring, shred both ends are fixed respectively on the front end of outer sheath pipe and first ring, the front end of outer sheath pipe is the arc through shredding taut bending, naked shred and be the crooked sheath nest of tubes one-tenth tool bit of arc, radian through the first ring control tool bit of push-and-pull, be equipped with the twist grip between outer sheath pipe and the core bar, the one end of outer sheath pipe is fixed on the twist grip, the end cap is fixed on the twist grip, the one end of twist grip connects on the core bar, outer sheath pipe is rotatable structure, outer sheath pipe and tool bit realize 360 rotations through rotating the twist grip, the inside of tool bit is equipped with the unable penetrable development ring of X ray. Can solve the problem that the current tool bit can't carry out 360 orientation rotations when using and can't the accurate tool bit depth of insertion and position of knowing when inserting the tool bit.

Description

Bow-shaped knife for duodenal papilla

Technical Field

The utility model relates to the field of medical equipment, concretely relates to bow-shaped sword for duodenal papilla.

Background

Since the application of the digestive endoscopy technology in the 70 s of the 20 th century to clinical application, the endoscopy technology has become a digestive system disease and an important diagnosis and treatment means thereof, and in recent years, the domestic digestive endoscopy diagnosis and treatment technology has been rapidly developed. Biliary tract diseases are one of the common diseases of human beings, and the common biliary tract diseases comprise pancreatitis, biliary tract atresia, biliary tract cancer, cholelithiasis and the like. The diagnosis and treatment of biliary tract diseases have achieved unprecedented progress in the last decade, especially the rapid development of endoscope technology, and many biliary tract diseases are treated from no treatment to minimally invasive treatment of endoscopes, so that the pain of patients is relieved, and the life quality is improved.

The minimally invasive therapeutic apparatus for biliary tract diseases can enter the biliary tract only through the duodenal papilla, and the contractibility of the sphincter papilla determines that the insertion of the apparatus through the biliary tract has certain difficulty, so that the duodenal papilla is usually cut by a bow knife. In the course of the incision, the following technical difficulties arise: 1. the bow-shaped knife head is difficult to accurately align with the nipple; 2. the insertion of the scalpel head into the nipple is difficult due to the contractibility of the nipple sphincter; 3. when the electric cutting is carried out, the cutter bow easily cuts the nipple excessively, and no protective measures are taken; 4. the white steel wire is not bright under the endoscope and cannot well prompt a doctor; 5. the arcuate knife insertion depth is also difficult to determine.

SUMMERY OF THE UTILITY MODEL

In order to solve certain or some technical problem that exists among the prior art, the utility model provides a bow-shaped sword for duodenal papilla can solve current tool bit and can't carry out the direction rotation of 360 when using and can't the accurate problem of knowing tool bit depth of insertion and position when inserting the tool bit.

For solving the above-mentioned prior art problem, the utility model discloses a following scheme:

an arch-shaped knife for duodenal papilla comprises an outer sheath tube, a first finger ring, two second finger rings, a core bar, an end cap, a conductive plug and a filament, wherein the two second finger rings are symmetrically arranged on two sides of the core bar, the first finger ring is arranged at the rear end of the core bar, two ends of the filament are respectively fixed at the front end of the outer sheath tube and the first finger ring, the front end of the outer sheath tube is tensioned and bent into an arc shape through the filament, the exposed filament and the outer sheath tube which is bent into the arc shape are combined to form a knife head, the radian of the knife head is controlled by pushing and pulling the first finger ring, a rotating handle is arranged between the outer sheath tube and the core bar, one end of the outer sheath tube is fixed on the rotating handle, the end cap is fixed on the rotating handle, one end of the rotating handle is screwed on the core bar, and the outer sheath tube is of a rotatable structure, the sheath pipe reaches the tool bit is through rotating the twist grip realizes 360 rotations, the inside of tool bit is equipped with the unable penetrable development ring of X ray.

Further, the outer surface of the outer sheath tube is coated with a hydrophilic coating.

Further, the hydrophilic coating is polyvinylpyrrolidone.

Furthermore, the shredding comprises an exposed cutting section and a partially exposed or non-exposed driving section, and an insulating coating is arranged on the driving section of the shredding.

Further, the cutting segment area of the filament is coated with a gold plating layer.

Further, the developing ring is a tantalum ring, and the tantalum ring is arranged at the top end of the outer sheath pipe and located in the arc shape on the inner side of the cutter head.

Compared with the prior art, the beneficial effects of the utility model reside in that:

through twist grip and rather than fixed connection's rotatable sheath pipe, can open the purpose of adjusting the tool bit direction, make it realize 360 arbitrary angle's control in the operation process, the operation in-process more conveniently aims at the duodenum nipple, and simultaneously, the tool bit portion adds the unable penetrating development ring of X ray, can judge the depth of insertion through the shining of X ray when the operation, after the cutting operation finishes, when necessary, the doctor can be according to actual need, further insert required position with the accurate degree of depth of tool bit.

Drawings

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

FIG. 2 is an enlarged view of the tool bit portion of the present invention;

FIG. 3 is a schematic diagram of the position structure of the developing ring of the present invention;

fig. 4 is a schematic view of the rotation of the tool bit of the present invention.

In the figure: the device comprises a first finger ring 1, a second finger ring 2, a core bar 3, an end cap 4, a conductive plug 5, a rotary handle 6, an outer sheath tube 7, a shredding 8, a developing ring 9, a cutting section 10, a cutter head 11 and a driving section 12.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1 to 4, an arch-shaped knife for duodenal papilla comprises an outer sheath tube 7, a first finger ring 1, two second finger rings 2, a core bar 3, an end cap 4, a conductive plug 5 and a filament 8, wherein the two second finger rings 2 are symmetrically arranged on two sides of the core bar 3, the first finger ring 1 is arranged at the rear end of the core bar 3, two ends of the filament 8 are respectively fixed on the front end of the outer sheath tube 7 and the first finger ring 1, the front end of the outer sheath tube 7 is tensioned and bent into an arc shape through the filament 8, the exposed filament 8 and the outer sheath tube 7 which is bent into an arc shape are combined to form a knife head 11, the arc shape of the knife head 11 is controlled through the first finger ring 1, a rotating handle 6 is arranged between the outer sheath tube 7 and the core bar 3, one end of the outer sheath tube 7 is fixed on the rotating handle 6, the end cap 4 is fixed on the rotating handle 6, one end of the rotating handle 6 is screwed on the core rod 3, the outer sheath tube 7 is of a rotatable structure, the outer sheath tube 7 and the tool bit 11 rotate through the rotating handle 6 to realize 360-degree rotation, and the inside of the tool bit 11 is provided with a developing ring 9 which can not be penetrated by X-rays.

In the practical use process, the rotary handle 6 and the core bar 3 are designed to be rotatable, the end cap 4 and the rotary handle 6 are of an integral structure, one end of the outer sheath tube 7 is fixed on the rotary handle 6 to communicate the outer sheath tube 7 with the end cap 4, when the end cap 4 or the rotary shaft handle rotates, the outer sheath tube 7 can be driven to rotate and be conducted to the head end, so that the cutter head 11 part of the head end also rotates to achieve the effect of adjusting the direction of the cutter head 11, the cutter head 11 of the bow-shaped knife can be adjusted by 360 degrees through the rotary handle 6, the shredding 8 on the cutter head 11 can be more conveniently and accurately aligned with the duodenal papilla for operation, meanwhile, the developing ring 9 which cannot be penetrated by X rays is added at the cutter head 11 part, after the cutting operation is finished and if necessary, a doctor can further insert the cutter head 11 of the bow-shaped knife deeply according to actual needs, and the inserted bile duct cannot be observed through endoscope developing equipment, at this moment, the insertion depth needs to be observed by means of X-rays, when the part of the cutter head 11 is provided with the developing ring 9 which can not be penetrated by the X-rays, the insertion depth of the bow-shaped cutter can be detected by the X-rays, so that the problems that the accurate nipple alignment is difficult to be carried out on the bow-shaped cutter head 11 due to the fact that the adjustment of any angle can not be carried out, and the nipple is difficult to be inserted into the bow-shaped cutter head 11 due to the contractibility of the nipple sphincter, and the insertion depth of the bow-shaped cutter head 11 is difficult to judge.

Further, the outer surface of the outer sheath tube 7 is coated with a hydrophilic coating; the hydrophilic coating is polyvinylpyrrolidone.

After the hydrophilic coating is coated on the outer surface of the outer sheath tube 7, the coating can greatly increase the lubrication degree of the outer sheath tube 7, is more beneficial to the insertion of the outer sheath tube 7 into a duodenal papilla, and can not cause the situation that the cutter head 11 is difficult to insert into the papilla due to the contractility of the papilla sphincter, so that the position where the cutter head 11 extends into is more conveniently controlled; the hydrophilic coating adopts polyvinylpyrrolidone, can be better increase the lubricity of tool bit 11, and its principle is that a coating that forms is organically combined to the pipe surface through the special mode with biological macromolecule, so be famous because of having good high hydrophilicity, hydrophilic coating normality is presented with the form of dry film, can be activated after meeting water, becomes very lubricated to the degree of lubrication of effectual increase sheath pipe 7 is favorable to sheath pipe 7 to insert in the duodenum nipple.

Further, the filament 8 comprises a naked cutting section 10 and a partially naked or non-naked driving section 12, and an insulating coating is arranged on the driving section 12 of the filament 8.

The shredding 8 comprises a cutting section 10 exposed on the cutter head 11 and a driving section 12 with one end connected with the first ring 1 exposed or not exposed, the part of the driving section 12 communicated with the cutting section 10 can be pushed back and forth according to the first ring 1 to be switched between the two states of exposed or not exposed, therefore, when an insulating coating is attached to the non-driving section 12 of the shredding 8, when the conductive plug 5 is connected with a power supply to electrically cut the duodenal papilla, only the part of the cutting section 10 can be cut, the other part is coated with the insulating coating, the over-cutting condition is well avoided, and therefore, the situation that the papilla is excessively cut due to no protective measures is easily caused when the conductive plug 5 is connected with the power supply in the prior art is effectively avoided, and the cutter head 11 is easy to appear.

Further, the area of the cutting segment 10 of the filament 8 is coated with gold plating.

Because the sheath pipe 7 is generally made of semitransparent high molecular material, when the cutting section 10 of the shredding 8 is plated with a gold-plated layer, the visualization of the shredding 8 is improved because the gold color is bright, when the bow-shaped knife passes through the clamping channel to be close to the duodenum, the light source of the endoscope irradiates on the shredding 8 of the gold-plated layer, and the knife head 11 of the bow-shaped knife is easily observed through the imaging equipment, so that the cutting position of a doctor can be well prompted, and the condition of excessively cutting the nipple is avoided.

Further, the developing ring 9 is a tantalum ring, and the tantalum ring is arranged at the top end of the outer sheath 7 and located on the inner side of the arc-shaped tool bit 11.

After the cutting operation is finished, if necessary, a doctor can further insert the depth of the arched knife according to actual needs, the inserted bile duct cannot be observed through endoscope imaging equipment, the insertion depth needs to be observed by means of X rays at the moment, the tantalum ring which is difficult to penetrate through by the X rays is installed on the arched knife head 11, the insertion depth of the arched knife can be detected, meanwhile, the material taking range is wider, the tantalum ring is arranged at the top end of the outer sheath tube 7 and located on the inner side of the arched knife head 11, and the exposed part of the shredding tube 8 is more accurately determined.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides an arch-shaped sword for duodenum nipple, includes outer sheath pipe, first ring, two second rings, core bar, end cap, electrically conductive plug, shreds, two the second ring symmetry sets up the both sides of core bar, first ring is established the rear end of core bar, the both ends of shredding are fixed respectively the front end of outer sheath pipe with on the first ring, the front end of outer sheath pipe passes through shred taut bending is the arc, and naked shred and be the arc bending outer sheath pipe combination forms the tool bit, through push-and-pull first ring control the radian of tool bit, its characterized in that: the X-ray imaging device is characterized in that a rotating handle is arranged between the outer sheath tube and the core rod, one end of the outer sheath tube is fixed on the rotating handle, the end cap is fixed on the rotating handle, one end of the rotating handle is screwed on the core rod, the outer sheath tube is of a rotatable structure, the outer sheath tube and the tool bit realize 360-degree rotation through rotating the rotating handle, and a developing ring which cannot be penetrated by X rays is arranged inside the tool bit.

2. A bow knife for a duodenal papilla as claimed in claim 1, wherein: the outer surface of the outer sheath tube is coated with a hydrophilic coating.

3. A bow knife for a duodenal papilla as claimed in claim 2, wherein: the hydrophilic coating is polyvinylpyrrolidone.

4. A bow knife for a duodenal papilla according to any one of claims 1 to 3, wherein: the shredding comprises an exposed cutting section and a partially exposed or non-exposed driving section, and an insulating coating is arranged on the driving section of the shredding.

5. A bow knife for a duodenal papilla of claim 4, wherein: the cutting section area of the filament is coated with a gold plating layer.

6. A bow knife for a duodenal papilla as claimed in claim 1, wherein: the developing ring is a tantalum ring, and the tantalum ring is arranged at the top end of the outer sheath tube and located in an arc shape on the inner side of the cutter head.