CN210990578U - String bag suitable for endoscopic biliary tract calculus removal - Google Patents

Abstract

The utility model discloses a string bag suitable for stone is got to scope biliary tract, it includes: an operating handle, a handle, an outer sleeve, a traction wire and a net bag; one end of the handle is movably connected with the operating handle, the other end of the handle is connected with the outer sleeve, and one end of the traction wire sequentially penetrates through the outer sleeve and the inside of the handle to be connected with the operating handle; the other end of the traction wire is connected with one end of a string bag metal wire, a string bag is arranged on the string bag metal wire in a penetrating mode, and the operation handle pulls the string bag to extend out of or retract back from the outer sleeve through the traction wire; the net bag is woven by polyimide fibers, and the aperture of the net bag is 0.1mm-1 mm. The net bag for endoscopic biliary calculus removal in the utility model is compact and firm, has small aperture, and is not easy to omit small volume and silt-like calculus; the net bag is made of polyimide fiber, is soft and light in texture, is not easy to damage biliary tract mucous membrane, and is high in strength and corrosion resistant.

Description

String bag suitable for endoscopic biliary tract calculus removal

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to string bag suitable for stone is got to scope biliary tract.

Background

The choledocholithiasis refers to the calculi in the common bile duct, most of which are bile pigment calculi or mixed calculi mainly containing bile pigment, and are better developed at the lower end of the common bile duct. It can be classified into primary choledocholithiasis and secondary choledocholithiasis according to its origin. Calculus formed in bile ducts becomes primary bile duct calculus, the formation of which is closely related to biliary tract infection, cholestasis, biliary ascariasis. Calculus in bile ducts is caused by gallbladder, called secondary bile duct calculus, and is common in cholesterol calculus. Biliary calculi is a common surgical disease, and millions of patients are newly increased every year in China. There are two main methods for treating biliary calculus, surgical operation for biliary tract calculus and endoscopic calculus.

In the clinical treatment process, the common bile duct stones need to be taken out under a duodenoscope, and the method generally adopted at present is to take the stones out by using a stone taking basket or a saccule. However, the existing stone-taking net basket has a large aperture, stones are easy to miss, and the sediment-like stones are easy to adhere to the wall and are difficult to take out by balloon stone-taking. For example, in chinese patent application CN 105982716A, a stone-removing basket is disclosed, which solves the problem that the conventional stone-removing basket needs to be removed by a surgical operation when the stone-removing basket is embedded, but the basket at the distal end of the sheath tube is composed of a plurality of basket wires, and the basket wires are oriented in the same direction, have large gaps therebetween, and are prone to the occurrence of stone omission. In addition, in chinese patent CN 209107495U, a biliary tract stone extractor is also disclosed, which has a cup-mounted stone-extracting basket net, the head end of the stone-extracting basket is cup-mouth shaped, stones in the bile duct can easily enter the basket by pushing the basket, the side wall wires of the basket are net-shaped, but the net-shaped structure of the side wall wires is lack of a sufficient number of interlacing points, resulting in a larger mesh of the stone-extracting basket net, and the problem of stone omission is easily caused in the stone-extracting process.

In order to take out all stones in the biliary tract for better disease treatment, a net bag suitable for endoscopic biliary tract calculus removal, which is convenient to operate, small in pore size, high in calculus removal success rate, high in strength and corrosion resistant, is urgently needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a string bag suitable for scope biliary tract gets stone to solve the technical problem who exists among the prior art.

The utility model provides a following technical scheme: a string bag suitable for endoscopic biliary calculus extraction, comprising: an operating handle, a handle, an outer sleeve, a traction wire and a net bag; one end of the handle is movably connected with the operating handle, the other end of the handle is connected with the outer sleeve, and one end of the traction wire sequentially penetrates through the outer sleeve and the inside of the handle to be connected with the operating handle; the other end of the traction wire is connected with one end of a string bag metal wire, a string bag is arranged on the string bag metal wire in a penetrating mode, the operation handle pulls the string bag to extend out of or retract back from the outer sleeve through the traction wire, the string bag is woven by polyimide fibers, the string bag made of the polyimide fibers is soft and light in texture, high in strength and corrosion-resistant, and the aperture of the string bag is 0.1mm-1 mm; the net bag has small aperture and is not easy to omit stones with small volume.

In a preferred embodiment of the present invention, the operating handle is slidably connected to the handle, and the operating handle is inserted into the handle as a sliding sleeve; or the operating handle is in threaded connection with the handle, external threads are arranged on the outer wall of the operating handle, and internal threads are arranged on the inner wall of the handle. The operation handle and the handle can realize relative movement, and the operation handle 1 can draw the drawing wire 7.

In the preferred embodiment of the utility model, the string bag metal head is connected to the other end of string bag metal wire, string bag metal head can be used to fixed string bag metal wire and string bag.

In the preferred embodiment of the utility model, the string bag metal wire is made of memory titanium alloy and is in a hexagon-diamond shape or octagon-diamond shape after being expanded; the diameter of the net bag metal wire is preferably 1mm, the length of the net bag metal wire after being expanded is 4cm, and the width of the net bag metal wire is 2 cm.

In the preferred embodiment of the present invention, the metal head of the pulling wire and the net bag is made of 304 stainless steel.

In a preferred embodiment of the present invention, the outer sleeve is a medical plastic sleeve.

In a preferred embodiment of the present invention, the operating handle and the grip are made of plastic.

Compared with the prior art, the utility model discloses the beneficial effect who produces is:

(1) the net of the net bag suitable for endoscopic biliary calculus removal in the utility model is fine and firm, and because the aperture is small, the net bag is not easy to omit stones with small volume and silt samples; the net bag is made of polyimide fiber, is soft and light in texture, is not easy to damage biliary tract mucous membrane, and is high in strength and corrosion resistant.

(2) The utility model provides a string bag suitable for stone is got to scope biliary tract simple structure, convenient operation, it is high to get the stone success rate, can effectively avoid the condition of silt appearance calculus adherence to the wall to appear.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a partial schematic view of the present invention.

In the figure: 1. an operating handle; 2. a handle; 3. an outer sleeve; 4. a string bag wire; 5. a net bag; 6. a metal head of the net bag; 7. and (4) drawing the wires.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

The first embodiment is as follows:

the embodiment of the utility model provides an in provide a string bag suitable for scope biliary tract gets stone, as shown in fig. 1-2, include: the device comprises an operating handle 1, a handle 2, an outer sleeve 3, a traction wire 7 and a net bag 5; one end of the handle 2 is movably connected with the operating handle 1, the other end of the handle 2 is connected with the outer sleeve 3, and one end of the traction wire 7 sequentially penetrates through the outer sleeve 3 and the inside of the handle 2 to be connected with the operating handle 1; the other end of the traction wire 7 is connected with one end of a net bag metal wire 4, and a net bag 5 penetrates through the net bag metal wire 4. Wherein, the aperture of the net bag 5 is 0.1mm, the aperture is small, and small volume and sand-like calculi are not easy to miss; the material of string bag 5 is the polyimide fiber, and the polyimide fiber texture is soft, and is light, is difficult for haring the biliary tract mucous membrane, and intensity is high, corrosion-resistant. The other end of the string bag metal wire 4 is connected with a string bag metal head 6, and the string bag metal wire 4 is made of memory titanium alloy and has the diameter of 1 mm.

The utility model discloses in, relative motion can be realized to operating handle 1 and handle 2, can be for relative slip or rotation, preferably inserts for operating handle 1 and establishes in handle 2, and operating handle 1 constitutes the slip sleeve form with handle 2, realizes operating handle 1 to the tractive that leads wire 7. The operation handle 1 pulls the net bag 5 to extend out of or retract into the outer sleeve 3 through the pulling wire 7; the expanded string bag metal wire 4 is hexagonal-rhombic, specifically, the string bag metal wire 4 is composed of six rhombic metal wires and used as a support of the string bag 5, and the expanded string bag metal wire 4 is 4cm long and 2cm wide; the net bag 5 is woven by polyimide fibers in a staggered mode, and after the net bag 5 is opened, the net bag covers the rhombic half position of the net bag metal wire 4 and is matched with the shape of the net bag metal wire 4.

In the utility model, the pulling wire 7 and the net bag metal head 6 are both made of 304 stainless steel; the outer sleeve 3 is a medical plastic sleeve, and the outer diameter of the outer sleeve 3 is 3mm, and the length of the outer sleeve is 2.2 m; the operating handle 1 and the handle 2 are made of plastic materials.

Example two:

on the other hand, the embodiment of the utility model provides a string bag suitable for stone is got to scope biliary tract in the second, include: the device comprises an operating handle 1, a handle 2, an outer sleeve 3, a traction wire 7 and a net bag 5; one end of the handle 2 is movably connected with the operating handle 1, the other end of the handle 2 is connected with the outer sleeve 3, one end of the traction wire 7 sequentially penetrates through the outer sleeve 3 and the inside of the handle 2 to be connected with the operating handle 1, inner threads are arranged on the inner wall of the handle 2, outer threads are arranged on the outer wall of the operating handle 1, the outer threads of the operating handle 1 are screwed with the inner threads of the handle 2, and the traction of the operating handle 1 on the traction wire 7 is realized; the other end of the traction wire 7 is connected with one end of a net bag metal wire 4, and a net bag 5 penetrates through the net bag metal wire 4; wherein, the aperture of string bag 5 is 1mm, the material of string bag 5 is polyimide fiber. The other end of the string bag metal wire 4 is connected with a string bag metal head 6, and the string bag metal wire 4 is made of memory titanium alloy and has the diameter of 1.2 mm.

The utility model discloses in, the external screw thread of operating handle 1 closes soon with the internal thread of handle 2 and can realize relative motion, realizes operating handle 1 to the tractive of tractive line 7. The operation handle 1 pulls the net bag 5 to extend out of or retract into the outer sleeve 3 through the pulling wire 7; the expanded string bag metal wire 4 is octagonal-rhombic, specifically, the string bag metal wire 4 is composed of eight rhombic metal wires, and the expanded string bag metal wire 4 serving as a support of the string bag 5 is 4cm in length and 2cm in width; the net bag 5 is woven by polyimide fibers in a staggered mode, and the net bag 5 covers the diamond-shaped half position of the net bag metal wire 4 and is matched with the shape of the net bag metal wire 4.

In the utility model, the pulling wire 7 and the net bag metal head 6 are both made of 304 stainless steel; the outer sleeve 3 is a medical plastic sleeve, and the outer diameter of the outer sleeve 3 is 3mm, and the length of the outer sleeve is 2.4 m; the operating handle 1 and the handle 2 are made of plastic materials.

The utility model discloses a working process does: firstly, the duodenoscope is put into a mouth, an esophagus and a stomach to a duodenum descending segment, the duodenoscope is adjusted, the duodenum papilla is directly observed, a nipple incision knife with a guide wire selective cannula inserts the guide wire into a common bile duct, the incision knife inserts the common bile duct along the guide wire, contrast medium is injected under X-ray fluoroscopy, the position of calculus is determined, the incision knife incises the duodenal papilla sphincter along the biliary tract walking direction, a calculus taking net bag is inserted from a duodenoscope biopsy pore along the guide wire, the net bag 5 enters the biliary tract under X-ray fluoroscopy, the net bag 5 is opened after crossing calculus, the net bag is moved up and down to enable the calculus to enter the net bag 5, then the net bag 5 is tightened, and the biliary tract calculus is taken out.

While the principles, principal features, and advantages of the invention have been shown and described, it is to be understood that the above description is intended to be illustrative, and not restrictive. To those skilled in the art, the present invention is not limited to the above-described embodiments, and various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention, and these changes and modifications should fall within the scope of the claimed invention. The scope of the present invention is defined by the appended claims and equivalents thereof. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1. A string bag suitable for endoscopic biliary calculus extraction, comprising: an operating handle (1), a handle (2), an outer sleeve (3), a traction wire (7) and a net bag (5); one end of the handle (2) is movably connected with the operating handle (1), the other end of the handle (2) is connected with the outer sleeve (3), and one end of the traction wire (7) sequentially penetrates through the outer sleeve (3) and the inside of the handle (2) to be connected with the operating handle (1); the multifunctional drawing wire is characterized in that the other end of the drawing wire (7) is connected with one end of a net bag metal wire (4), a net bag (5) penetrates through the net bag metal wire (4), and the operating handle (1) draws the net bag (5) to extend out of or retract back from the outer sleeve (3) through the drawing wire (7); the net bag (5) is woven by polyimide fibers, and the aperture of the net bag (5) is 0.1mm-1 mm.

2. The string bag suitable for endoscopic biliary calculus removal according to claim 1, wherein the operating handle (1) is slidably connected to the handle (2), and the operating handle (1) is inserted into the handle (2) as a sliding sleeve; or the operating handle (1) is in threaded connection with the handle (2), the outer wall of the operating handle (1) is provided with external threads, and the inner wall of the handle (2) is provided with internal threads.

3. The string bag suitable for endoscopic biliary calculus removal according to claim 1, wherein the other end of the string bag wire (4) is connected to the string bag metal head (6).

4. The string bag applicable to endoscopic biliary calculus removal according to claim 1, wherein the string bag wire (4) is made of memory titanium alloy and is in a hexagonal-diamond shape or an octagonal-diamond shape after being expanded.

5. The string bag applicable to endoscopic biliary calculus according to claim 4, wherein the pulling wire (7) and the string bag metal head (6) are made of 304 stainless steel.

6. The string bag applicable to endoscopic biliary calculus removal according to claim 1, wherein the outer sheath (3) is a medical plastic sheath.

7. The string bag applicable to endoscopic biliary calculus removal according to claim 1, wherein the operation handle (1) and the handle (2) are made of plastic.

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