Transparent cap of choledochoscope

Abstract

The transparent cap of the choledochoscope comprises a cap portion and a connecting portion, the tube wall of the front end, away from the connecting portion, of the cap portion is in an arc shape, and a first annular thread is arranged on the inner wall of the connecting portion. The choledochoscope tip is of a convex structure composed of a head part and a body part, the outer diameter of the head part is smaller than that of the body part, a second annular thread is arranged on the outer wall of the head part, and the second annular thread is connected with the first annular thread in a matched mode to achieve connection between the connecting part and the head part; and the outer diameter of the connecting part is the same as that of the body part. The transparent sleeve can be installed at the front end of a choledochoscope to carry out operations such as gall bladder or bile duct washing, calculus removal, stenosis expansion, gall bladder duct or Oddi sphincter exploration and the like; the transparent cap is firmly mounted and cannot fall off; the outer diameter of the connecting part of the transparent cap is consistent with the outer diameter of the choledochoscope body part, the tube wall at the front end of the cap part of the transparent cap is arc-shaped, and tissues such as fistulous tracts, gallbladders and bile duct mucosa are not damaged in the choledochoscope examination and treatment process.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a transparent cap for a cholangioscope. Background Technology

[0002] Cholangioscopy is a commonly used instrument in hepatobiliary surgery. It can be used to examine the gallbladder, cystic duct, and intrahepatic and extrahepatic bile ducts to identify lesions such as stones, polyps, and tumors. In addition, it is widely used for stone removal, stone fragmentation, polyp and stricture incision or removal, and hemostasis.

[0003] The currently used cholangioscopes have a cylindrical tip covered with rubber. This facilitates procedures such as examining the gallbladder mucosa, exploring the cystic duct, dilating stenosis, passing through the sphincter of Odddi, biliary irrigation, aspirating lithotripsy or sludge-like stones, removing excised polyps and other tissue specimens, and electrocoagulation for mucosal bleeding. A transparent cap needs to be installed at the end of the cholangioscope. Currently used transparent caps have the following main problems: 1. The inner wall of the transparent cap is smooth. When the cap is fitted onto the end of the cholangioscope using its own tension, the pressure exerted by tissues during the insertion and exit of the cholangioscope through fistulas, gallbladder, and bile ducts can cause the cap to shift or fall off; 2. During installation, the friction and pressure between one end of the transparent cap and the rubber skin of the cholangioscope can cause the rubber skin to peel or break; 3. The transparent cap has a certain thickness. When the outer diameter of the transparent cap installed at the tip of the cholangioscope is larger than the outer diameter of the cholangioscope, the friction between one end of the transparent cap and the walls of the fistula, gallbladder, bile ducts, and sphincter of Oddi can cause mucosal damage and bleeding, thus affecting the procedure. Utility Model Content

[0004] To address the aforementioned technical problems, a transparent cap for a cholangioscope is provided. The technical means employed in this invention are as follows:

[0005] A transparent cap for a cholangioscope, the transparent cap being used to connect to the tip of the cholangioscope, comprising: an integrally connected cap portion and a connecting portion, wherein the front end wall of the cap portion away from the connecting portion is arc-shaped, and the inner wall of the connecting portion is provided with a first annular thread;

[0006] The tip of the cholangioscope is a convex structure consisting of a head and a body. The outer diameter of the head is smaller than that of the body. The outer wall of the head is provided with a second annular thread. The second annular thread is connected to the first annular thread to realize the connection between the connecting part and the head.

[0007] The outer diameter of the connecting part is the same as the outer diameter of the body part.

[0008] Furthermore, the cap can be short columnar, long columnar, conical, cup-shaped, trumpet-shaped, or long-necked.

[0009] Furthermore, a photosensitive element and a light-emitting diode are installed on the head.

[0010] Furthermore, the transparent cap is a single-channel tube.

[0011] Furthermore, the connecting part is cylindrical.

[0012] Furthermore, the head is cylindrical.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. The transparent cap of this utility model does not damage the rubber skin of the cholangioscope during installation, and will not cause the rubber skin of the cholangioscope to peel or break.

[0015] 2. Although the wall of the transparent cap in this invention has a certain thickness, the outer diameter of the connecting part of the transparent cap is the same as the outer diameter of the body of the cholangioscope, and the side edge of the connecting part of the transparent cap does not damage the fistula, gallbladder and bile duct wall mucosa and other tissues.

[0016] 3. In this utility model, the outer edge of the tube wall at the front end of the transparent sleeve is arc-shaped, so that the tube wall of the transparent sleeve does not damage the tissues during the process of the cholangioscope entering and exiting the fistula, gallbladder and bile duct.

[0017] Based on the above reasons, this utility model can be widely promoted in fields such as medicine. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the transparent cap of this utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the tip of the cholangioscope of this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the short cylindrical transparent cap of this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the elongated cylindrical transparent cap of this utility model.

[0024] Figure 6 This is a schematic diagram of the structure of the cone-shaped transparent cap of this utility model.

[0025] Figure 7 This is a schematic diagram of the structure of the cup-shaped transparent cap of this utility model.

[0026] Figure 8 This is a schematic diagram of the structure of the trumpet-shaped transparent cap of this utility model.

[0027] Figure 9 This is a schematic diagram of the structure of the long-necked transparent cap of this utility model.

[0028] In the diagram: 1. Transparent cap; 11. Cap part; 12. Connecting part; 2. Tip of the cholangioscope; 21. Head; 22. Body; 23. Photosensitive element; 24. Light-emitting diode. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] This utility model provides a transparent cap for a cholangioscope. The transparent cap 1 is a single-channel tube, divided into a cap part 11 and a connecting part 12 (the cap part 11 and the connecting part 12 are an integral structure). The cap part 11 is in the shape of a short column, a long column, a cone, a cup, a trumpet, or a long neck, etc. The front end wall of the cap part 11 away from the connecting part 12 is arc-shaped. The connecting part 12 is cylindrical, and the inner wall of the channel of the connecting part 12 is provided with a first annular thread.

[0031] The tip 2 of the cholangioscope is convex and consists of a head 21 and a body 22. The outer diameter of the head 21 is smaller than that of the body 22, while the outer diameter of the connecting part 12 is the same as that of the body 22. The head 21 is a single-channel cylinder, and its outer wall is provided with a second annular thread. The second annular thread engages with the first annular thread to connect the connecting part 12 to the head 21, thereby connecting the transparent cap 1 to the tip 2 of the cholangioscope. The head 21 is equipped with a photosensitive element 23 (using an existing photosensitive element) and a light-emitting diode 24 (using an existing light-emitting diode).

[0032] In this invention, a transparent sleeve can be installed at the tip of a cholangioscope for procedures such as gallbladder or bile duct irrigation, stone removal, stricture dilation, and exploration of the cystic duct or sphincter of Oddi. The transparent cap is securely installed and will not fall off. The outer diameter of the connecting part of the transparent cap is consistent with the outer diameter of the body of the cholangioscope, and the front end of the transparent cap has an arc-shaped tube wall, so that there is no damage to the fistula, gallbladder, or bile duct mucosa during cholangioscopic examination and treatment.

[0033] Select different types of transparent caps according to different scenarios, and install the connecting part of the cholangioscope to the tip of the cholangioscope by rotating it.

[0034] 1. Short cap (short cylindrical): Routine cholangioscopy, aspiration of small amounts of fragments or sludge-like stones, and removal of gallbladder polyps;

[0035] 2. Long cap (long cylindrical shape): Adsorbs a large amount of gravel or mud-like stones;

[0036] 3. Conical cap: used to dilate narrowed areas and examine the cystic duct and sphincter of Oddi;

[0037] 4. Horn-shaped cap: Adsorbs larger stones;

[0038] 5. Cup cap: Adsorbs larger stones;

[0039] 6. Long-necked cap: Used to explore the cystic duct or narrowed bile duct.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A transparent cap for a choledochoscope, characterized in that The transparent cap (1) is used for connecting with the cholangioscope tip (2), comprising a cap part (11) and a connecting part (12) connected integrally, the front end pipe wall of the cap part (11) away from the connecting part (12) is circular arc, the inner wall of the connecting part (12) is provided with a first annular thread; The cholangioscope tip (2) is a convex structure composed of a head part (21) and a body part (22), the outer diameter of the head part (21) is smaller than that of the body part (22), the outer wall of the head part (21) is provided with a second annular thread, the second annular thread is matched and connected with the first annular thread, realizing the connection of the connecting part (12) and the head part (21); The outer diameter of the connecting part (12) is the same as that of the body part (22).

2. The transparent cap for a choledochoscope according to claim 1, characterized in that The cap part (11) is short column, long column, taper, cup type, horn shape or long neck shape.

3. The transparent cap for a choledochoscope according to claim 1, wherein The head part (21) is provided with a photosensitive element (23) and a light emitting diode (24).

4. The transparent cap for a choledochoscope according to claim 1, wherein The transparent cap (1) is a single channel pipe.

5. The transparent cap for a choledochoscope according to claim 1, wherein The connecting part (12) is cylindrical.

6. The transparent cap for a choledochoscope according to claim 1, wherein The head part (21) is cylindrical.

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