CN212213824U

CN212213824U - Stone-taking basket with thread guide holes

Info

Publication number: CN212213824U
Application number: CN202020346463.4U
Authority: CN
Inventors: 张�诚; 杨玉龙
Original assignee: Shanghai East Hospital Tongji University Affiliated East Hospital
Current assignee: Shanghai East Hospital Tongji University Affiliated East Hospital
Priority date: 2020-03-18
Filing date: 2020-03-18
Publication date: 2020-12-25
Anticipated expiration: 2030-03-18

Abstract

The utility model discloses a take stone basket of getting of seal wire hole, including guide head, basket zip, outer tube, cable handle and outer tube handle. The guide head comprises an arc-shaped head part and a cylindrical tail part, an oblique guide wire channel is arranged in the head part, the front end of the guide head is opened in the center of the head part, the rear end of the guide head is opened on the side wall of the head part, and four guide wires are embedded in the tail part; the net basket is composed of four metal wires which can be in various shapes such as arc, spiral and corner, and the tail parts of the four metal wires are connected with the net basket inhaul cable. The middle meridian guide head of the utility model is sleeved with the guide wire, so that the calculus-taking basket catheter can easily pass through the duodenal papilla and enter the target bile duct in the liver; a guide wire is placed in through a guide wire side hole at the front end of the outer sleeve and is led out through a guide wire side hole at the rear part, and the guide wire can be locked by a guide wire lock in the process of removing the stone, so that the guide wire is prevented from moving; the guide head is matched with the guide wire hole of the outer sleeve for use, the calculus removing catheter is easy to move through the guide wire in the calculus removing process, and the guide wire is prevented from being pulled into a duodenum cavity by the basket catheter.

Description

Stone-taking basket with thread guide holes

Technical Field

The utility model relates to a medical technology of wicresoft and surgical instruments technical field especially relate to a take stone basket of getting of seal wire hole.

Background

Bile duct calculi are common diseases and frequently encountered diseases in China, bile excretion is not smooth due to blockage of bile ducts by the calculi, complications such as acute cholangitis, obstructive jaundice, liver damage and the like are further induced, the symptoms such as chill, fever, abdominal pain, jaundice and the like appear, serious patients even cause shock, and long-term calculi stimulation has the risk of bile duct cancer, so that the bile duct calculi are important diseases which harm human health. The current treatment scheme of the bile duct calculus comprises the steps of abdominal opening, biliary tract exploration calculus removal, laparoscopic biliary tract exploration calculus removal, Endoscopic Retrograde Cholangiopancreatography (ERCP) calculus removal, Percutaneous Transhepatic Cholangiopuncture (PTCD), fistula expansion and Percutaneous Transcholangioscopy (PTCS) calculus removal, and duodenal papillary balloon dilatation and cyst calculus removal through the PTCD.

The biliary tract exploration requires general anesthesia, so the operation risk is high; PTCS is a long-term disease and the overall cost of treatment is high. The ERCP calculus removal has many symptoms such as few contraindications, small wound, quick recovery, few complications and the like, and the bile duct calculus is treated by adopting the endoscopic ERCP route at present. The ERCP is adopted to remove stones, two instruments, namely a stone removal saccule and a stone removal basket are generally adopted, wherein the stone removal basket is mainly used for treating stones with the diameter of more than 5mm, and the stone removal saccule is generally used for treating muddy stones, broken stones or stones with the diameter of less than 5 mm.

The stone-taking saccule which is clinically used at present is mostly provided with a guide wire cavity channel, the saccule can be placed into a common bile duct and enter a target bile duct to take stones under the guide of a guide wire, a stone-taking basket is mostly not provided with a guide wire channel, a basket catheter is directly placed into the bile duct to take stones, and the difficulty of placing the stone-taking basket catheter into the bile duct through a duodenal papilla is higher because the long axis of a duodenoscope and the long axis of the common bile duct form an acute angle. In order to enter the common bile duct through the duodenal papilla, the basket head end is usually shaped into an arc, and the stone-taking basket duct with the arc head end is easily placed into the common bile duct through the duodenal papilla. Because the duodenoscope and the common bile duct form an acute angle, the head end of the basket catheter is shaped into an arc, and the catheter is pressed into the arc by the forceps in the process of being placed into the catheter, the calculus-taking basket catheter entering the common bile duct is easy to enter the cystic duct and the right hepatic duct in the process of continuing to advance, so that stones of the common bile duct and the left hepatic duct can be easily treated by the calculus-taking basket.

In order to facilitate the basket to enter the designated bile duct for stone extraction, chinese patent document CN201220192382.9, application date 20120428, the patent names: the utility model discloses a but area leads to getting stone basket of wire metal head, including getting stone basket body, be provided with the basket on the body, the basket anterior segment is provided with the metal head, the metal head be the cavity body, can lead to the seal wire, the metal head form for the nonrust steel pipe welding of two different internal diameters, can lead to the seal wire, guide better, overcome the not enough of old-fashioned stone basket of getting, made very big progress. In actual operation, after the calculus is extracted from the basket, the calculus is extruded to the guide wire in the basket, so that the basket is difficult to move on the guide wire, the calculus can be extracted by withdrawing the guide wire, the guide wire needs to be placed again before the calculus is extracted, and the calculus extracting time is prolonged. Chinese patent document CN 201821481534.0, application date 20180911, with patent names: a dual-cavity end cap for a stone-taking net basket and a dual-cavity end cap for the stone-taking net basket are disclosed. A stone-taking basket comprises a basket body, an outer pipe and an operating part, wherein the basket body is connected with the operating part, and the operating part can control the basket body to move. The outer tube proximal end is connected with the operation portion, and extends axially from the proximal end to the distal end, and the outer tube distal end is provided with a double-cavity end cap. A double-cavity end cap for a stone-taking net basket, a guide wire can pass through one cavity channel of the double-cavity end cap, and the net basket can pass through the other cavity channel of the double-cavity end cap. In clinical operation, the fact that the axial direction of duodenum and the axial direction of common bile duct form an acute angle, the basket passing through the guide wire needs to be bent to form the acute angle and can enter the common bile duct, so that the head end pipe of the basket can wipe duodenal papilla, the difficulty of placing the calculus removal basket catheter is increased, and meanwhile, duodenal papilla edema and hemorrhage can be caused; secondly, when the basket is placed into the intrahepatic bile duct under the guidance of the guide wire, the head end of the basket is easily separated from the bile duct and scraped, so that the stone-taking basket catheter is difficult to place; furthermore, because the common bile duct and the intrahepatic bile duct have more angulations and branches, the guide wire is in an arc shape in the bile duct, when the basket is opened, the basket advances in a straight line, and the bile duct into which the basket enters is not the bile duct in which the guide wire is positioned, so that the calculus removal fails. Chinese patent document CN 201520186832.7, application date 20150330, with patent names: the stone-taking basket comprises a basket frame, a guide head arranged at the front end of the basket frame, a pull rope fixedly connected with the rear end of the basket frame and an outer pipe sleeved on the pull rope, wherein a wire guide hole is formed in the upper part of the guide head, the guide head is of a hollow structure, a basket frame fixing end is arranged in the hollow structure, and the guide head is made of soft plastic materials. The utility model has simple structure, and the main innovation point is the structural design of the guide head arranged at the front end of the basket frame, and the guide head is made of soft plastic material; when the stone-taking basket is used, the seeker can effectively prevent the stone-taking basket from scratching tissues, and when the stone-taking basket needs to be guided, the seeker can be guided through the guide wire hole, so that the stone-taking basket is convenient and practical, and is suitable for further popularization and application. In clinical operation, when the common bile duct is thick, the distance between the guide wire and the calculus removing basket catheter is large, and the guide wire is easy to be dragged into the duodenum in the calculus removing process; after the guide wire is pulled out from the guide head, the net basket needs to be withdrawn before stone taking, the guide wire is firstly placed, and then stone is taken, so that the stone taking time is prolonged.

SUMMERY OF THE UTILITY MODEL

In accordance with the above-mentioned technical problem, a stone-removing basket with wire-guiding holes is provided. The utility model discloses guide head accessible seal wire, get stone basket pipe and can get into target bile duct under the guide wire guide, increased the accuracy of getting the stone. The utility model discloses a technical means as follows:

a stone-removing basket with guide wire holes, comprising: guide head, basket, outer tube, basket zip, cable handle and outer tube handle, the both ends rigid coupling of basket is between guide head and basket zip, and the basket can remove in the outer tube, the tail end and the cable handle of basket zip link to each other, and the tail end and the outer tube handle of outer tube link to each other, and wherein, guide head includes arc head and cylindricality afterbody, is equipped with the seal wire passageway that supplies the seal wire to pass through in the head, seal wire passageway front end opening is central in head, and the rear end opening is on the head lateral wall, the seal wire that supplies the seal wire to pass through is seted up to the anterior segment and the central authorities of outer tube pipe wall and is advanced, is walked out.

When the device is used, the tail end of the guide wire sequentially penetrates through the guide head and the outer sleeve, the outer sleeve handle is pushed to the target bile duct, and the stone removal is completed by operating the zipper handle.

Furthermore, the cross-sectional area of the cylindrical tail part is smaller than that of the end part of the arc-shaped head part connected with the cylindrical tail part, and four metal wires are embedded in the cylindrical tail part.

Furthermore, the net basket is composed of four metal wires, the shapes of the metal wires comprise arc shapes, spiral shapes and fold line shapes, and the specifications of the metal wires are the same or different.

Furthermore, the head of the outer sleeve is a double-channel pipe and comprises a basket inhaul cable channel and a guide wire channel, both ends of the guide wire channel are blind ends, and the tail of the outer sleeve body is a single-channel pipe, namely the basket inhaul cable channel.

Further, the distance between the guide wire side hole and the catheter head end is 20-120 cm.

The utility model has the advantages of it is following:

1. the utility model discloses the seeker of arc head gets into intrahepatic bile duct resistance little, can effectively prevent this stone-taking basket to the fish tail of bile duct and duodenum nipple.

2. The utility model discloses guide head accessible seal wire, get stone basket pipe and can get into target bile duct under the guide wire guide, increased the accuracy of getting the stone.

3. The utility model discloses a have seal wire passageway and side opening in the outer tube, and the seal wire exposes the section and is located duodenoscope pincers way, can prevent effectively that the seal wire from shifting, when having avoided getting the stone, the risk that the basket was dragged out.

Based on the above reasons, the utility model can be widely popularized in the technical fields of minimally invasive medical technology and surgical instruments.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is the utility model discloses concrete structure schematic diagram after letting in the seal wire.

Fig. 2 is a schematic view of the structure of the guide head of the present invention.

Fig. 3 is a schematic view of the structure of the outer sleeve of the present invention.

Fig. 4 is a schematic structural view of the embodiment of the present invention in an open state of the basket.

Fig. 5 is a schematic view of a prior art stone-removing basket (handle portion).

Fig. 6 is a schematic view of a prior art stone-taking basket (basket section).

In the figure: 11. a guide head; 12. leading the head and the tail; 13. a guide head wire guide channel; 2. an outer sleeve; 21. the guide wire channel of the outer sleeve is inserted into the hole; 22. an outer sleeve guide wire channel outlet; 3. a basket; 4. a basket zipper; 5. guide wire, 6, handle portion.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in FIGS. 1-4, the embodiment of the utility model discloses a take stone basket of getting of seal wire hole, include: guide head, basket 3, outer tube 2, basket zip 4 and cable handle and outer tube handle's handle portion 6, the utility model discloses the handle portion can select for use the stone basket handle of getting commonly used of prior art, the both ends rigid coupling of basket is between guide head and basket zip, and the basket can remove in the outer tube, the tail end of basket zip links to each other with the cable handle, and the tail end of outer tube links to each other with the outer tube handle, the utility model discloses a main utility model discloses a point lies in, the guide head includes arc head 11 and cylindricality afterbody 12, is equipped with the seal wire passageway 13 that supplies seal wire 5 to pass through in the head, seal wire passageway front end opening is in head central authorities, and the rear end opening is on the head lateral wall, the seal wire inlet 21 that supplies the seal wire to pass through, the 22 of holing are seted up to anterior segment and the central authorities of.

The cross-sectional area of the cylindrical tail part is smaller than that of the end part of the arc-shaped head part connected with the cylindrical tail part, so that the cylindrical tail part is reserved in the outer sleeve when the net basket is not opened, the arc-shaped head part protrudes out of the outer sleeve, and four metal wires are embedded in the cylindrical tail part. The net basket is composed of four metal wires, the shape of the metal wires can be designed into various implementable shapes such as arc, spiral, fold line with corners and the like according to different practical application scenes, and the specifications of the metal wires are the same or different.

In the specific implementation process, the duodenoscope is placed through the mouth, after the bile duct is successfully cannulated, the guide wires are sequentially placed through the guide head and the guide wire cavity side holes, the outer sleeve handle is pushed under the guide of the guide wires, the stone-taking basket catheter is placed into a patient, after the guide wire side holes enter the duodenoscope forceps channel, the guide wires are locked through the catheter lock on the handle 6, and the basket catheter is continuously placed. When the head end of the basket catheter crosses the calculus, the pull rope handle is pushed, the basket is released, the basket is pulled back to sleeve the calculus, or the basket is placed forwards to sleeve the calculus. After the calculus is successfully sleeved and taken, the basket is tightened, the basket zipper is pulled back, the calculus is dragged to the duodenum, and the basket is opened to release the calculus. And tightening the basket, and putting the basket catheter into the basket again to remove the calculus until the calculus is completely removed. In this embodiment, the guide wire lock may be a simple protruding structure or other complex structures, and the guide wire can be wound thereon and then kept unchanged in displacement.

Fig. 5 and 6 show a calculus removing basket in the prior art, which is easily to cause a large distance between a guide wire and a calculus removing basket catheter due to a thick common bile duct, and the guide wire is easily pulled into the duodenum in the calculus removing process; and the utility model discloses then pass guide head and outer tube with the tail end of seal wire in proper order, get the stone basket of net pipe and can get into target bile duct under the guide wire guide, increased the accuracy of getting the stone. Because the guide head can keep the uniformity with the seal wire orbit at the in-process of getting the stone, so the utility model discloses when increasing the precision, still can be with the more thin of outer tube preparation, conveniently get into thinner bile duct, help the patient to solve the problem.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A stone-removing basket with guide wire holes, comprising: the pull-type guide wire device comprises a guide head, a basket, an outer sleeve, a basket zipper, a pull-rope handle and an outer sleeve handle, wherein two ends of the basket are fixedly connected between the guide head and the basket zipper, the basket can move in the outer sleeve, the tail end of the basket zipper is connected with the pull-rope handle, and the tail end of the outer sleeve is connected with the outer sleeve handle;

2. The stone basket as recited in claim 1, wherein the cylindrical tail portion has a cross-sectional area smaller than the cross-sectional area of the end portion of the curved head portion connected thereto, and four wires are embedded in the cylindrical tail portion.

3. The stone-taking basket with guide wire holes as claimed in claim 1 or 2, wherein the basket is composed of four metal wires, the shapes of the metal wires comprise arc, spiral and fold, and the specifications of the metal wires are the same or different.

4. The stone-taking basket with the wire guide hole as claimed in claim 1, wherein the head part of the outer sleeve is a double-channel tube, which comprises a basket guy cable channel and a wire guide channel, both ends of the wire guide channel are blind ends, and the tail part of the outer sleeve body is a single-channel tube, i.e. a basket guy cable channel.

5. The stone extraction basket according to claim 1, wherein the distance between the guide wire side hole and the catheter head end is 20-120 cm.