Biliary tract stent easy to take out
By designing an easily removable biliary stent, utilizing a biliary strut, bile drainage hole, and wing plate structure, combined with a flat support tube and barbs, the slippage problem during biliary stent retrieval is solved, achieving stable positioning and convenient removal of the biliary stent, reducing patient pain.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-03-27
AI Technical Summary
Existing biliary stents are prone to slipping during retrieval, making them difficult to remove normally from the patient's body, and frequent retrieval increases the patient's pain.
An easily removable biliary stent was designed, which adopts a biliary strut, bile drainage hole and wing plate structure, combined with a flat support tube and barbs. The biliary strut is formed by cross-woven titanium-nickel shape memory alloy wire, which increases toughness and prevents slippage through creases and barbs.
This method achieves stable positioning and convenient removal of biliary stents within the body, avoiding the slippage problem of traditional stents when driven by tools, and reducing patient pain.
Smart Images
Figure CN224039397U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to biliary tract stent technical field, concretely is a kind of easy to take out formula biliary tract stent. BACKGROUND
[0002] Biliary tract stent is a tubular device made of metal or synthetic material, which restores the patency of bile duct by placing in the bile duct. It can be used for the treatment of bile duct stricture, bile duct stone, bile duct cancer and other biliary diseases, aiming at restoring the normal flow of bile, relieving symptoms and preventing complications;
[0003] The existing biliary tract stent is usually cylindrical at both ends, which causes the biliary tract stent in the patient's body to slip when clamped by medical instruments, so that the biliary tract stent cannot be normally taken out from the patient's body, and frequent clamping can cause the biliary tract stent to slide in the patient's body, thereby increasing the pain of the patient. SUMMARY
[0004] (I) Technical problem solved
[0005] In view of the shortcomings of the prior art, the utility model provides an easy-to-take-out biliary tract stent to solve the technical problem that the above-mentioned biliary tract stent slips when clamped by medical instruments, so that the biliary tract stent cannot be normally taken out from the patient's body, and frequent clamping can cause the biliary tract stent to slide in the patient's body, thereby increasing the pain of the patient.
[0006] (II) Technical scheme
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an easy-to-take-out biliary tract stent, comprising: a biliary tract strut, a bile drainage hole and a wing plate, the bile drainage holes are uniformly arranged on the outside of the biliary tract strut, the wing plates are assembled on the both sides of the outside of the biliary tract strut, the both sides of the biliary tract strut are assembled with flat support tubes, and the outside of the flat support tubes is uniformly arranged with barbs.
[0008] Preferably, the both sides of the outside of the biliary tract strut are assembled with stop rings, the stop rings are annular light-shielding rings assembled on the outside of the biliary tract strut, the stop rings facilitate the determination of the position of the biliary tract strut in the patient's body under endoscopy and the placement of the position of the biliary tract strut fixed by the doctor.
[0009] Preferably, the biliary tract strut is composed of titanium-nickel memory alloy wires, and a plurality of titanium-nickel memory alloy wires are processed by cross-weaving, the titanium-nickel memory alloy wires are arranged in the form of hooks by cross-weaving to form the biliary tract strut, thereby improving the toughness of the biliary tract strut and avoiding the breakage of the biliary tract strut during use.
[0010] Preferably, the inner side of the flat support tube is uniformly provided with a crease, and the crease is a transverse groove, which facilitates the folding of the flat support tube into a flat shape by external driving.
[0011] Preferably, the barb is arranged at an angle of 45° on the outer side of the flat support tube, and the end away from the flat support tube is rounded, which can prevent the biliary tract support rod and the flat support tube from sliding out of the patient's body when in use.
[0012] Preferably, the bile drainage hole comprises a bottom end and a top end, the bottom end is assembled on the outer side of the biliary tract support rod and is composed of a spring plate, and the top end is arranged at the top of the bottom end at an angle, which can expand the narrow blocked area in the patient's body, thereby increasing the width of the bile duct and ensuring smooth flow of bile.
[0013] (Three) beneficial effects
[0014] Compared with the prior art, the utility model provides an easy-to-take-out biliary tract support, which has the following
[0015] Beneficial effects:
[0016] The easy-to-take-out biliary tract support can quickly fold the flat support tube into a flat shape in the patient's body through the added crease, and can prevent the biliary tract support rod from sliding in the patient's body through the added barb, and the flat design of the flat support tube facilitates the driving of the biliary tract support rod by external instruments, thereby avoiding the problem of slippage of the traditional cylindrical support when driven by tools, thereby reducing the pain of the patient in the case of frequent driving. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a front view of the utility model;
[0018] Figure 2 It is a schematic view of the biliary tract support rod of the utility model;
[0019] Figure 3 It is a front view of the biliary tract support rod of the utility model;
[0020] Figure 4 It is a schematic view of the flat support tube of the utility model.
[0021] In the figure: 1, biliary tract support rod; 11, titanium nickel memory alloy wire; 12, retaining ring; 2, bile drainage hole; 3, wing plate; 4, flat support tube; 41, barb; 42, crease. DETAILED DESCRIPTION
[0022] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled person in the art without creative labor belong to the scope of the utility model protection.
[0023] The utility model provides a technical scheme, please refer to Figure 1 And Figure 2 A biliary tract support easy to take out, including: biliary tract support rod 1, bile drainage hole 2 and wing plate 3, bile drainage hole 2 is evenly arranged on the outside of biliary tract support rod 1, wing plate 3 is assembled on the both sides of the outside of biliary tract support rod 1, the both sides of biliary tract support rod 1 are equipped with flat support tube 4, and the outside of flat support tube 4 is evenly provided with barb 41.
[0024] Biliary tract support rod 1 can dilate the biliary tract of the patient, and then facilitate the circulation of bile, bile drainage hole 2 can flow bile, wing plate 3 can support the biliary tract, and biliary tract support rod 1 is prevented from sliding in the patient's biliary tract, and flat support tube 4 facilitates the movement of biliary tract support rod 1 by medical personnel through medical equipment.
[0025] Please refer to Figure 3 And Figure 4 The both sides of the outside of biliary tract support rod 1 are equipped with stop ring 12, stop ring 12 is annular shading ring, is assembled on the outside of biliary tract support rod 1, stop ring 12 facilitates the position of biliary tract support rod 1 in the patient's body under endoscope, and facilitates the position of the doctor to place and fix biliary tract support rod 1.
[0026] Biliary tract support rod 1 is composed of titanium nickel memory alloy wire 11, and a plurality of titanium nickel memory alloy wires 11 are processed by cross weaving, titanium nickel memory alloy wire 11 is arranged in a hook shape by cross to form biliary tract support rod 1, thereby improving the toughness of biliary tract support rod 1, and avoiding the breakage of biliary tract support rod 1 during use.
[0027] The inner side of flat support tube 4 is evenly provided with creases 42, and the creases 42 are transverse grooves, the creases 42 facilitate the folding of flat support tube 4 to be flat by external driving, the barb 41 is arranged on the outside of flat support tube 4 at 45 °, and the end away from flat support tube 4 is treated by rounding, the barb 41 can prevent biliary tract support rod 1 and flat support tube 4 from sliding out of the patient's body during use.
[0028] Bile drainage hole 2 includes a bottom end and a top end, the bottom end is assembled on the outside of biliary tract support rod 1, and the bottom end is composed of a spring plate, the top end is arranged on the top of the bottom end, the bile drainage hole 2 can dilate the narrow obstruction area in the patient's body, thereby improving the width of the bile duct and ensuring smooth flow of bile.
[0029] The biliary tract support rod 1 is assembled in the body of a patient for support, the position of the biliary tract support rod 1 is observed through an endoscope, the flat support tube 4 is clamped by a tool, the flat support tube 4 is folded into a flat shape through the fold 42, the barb 41 and the wing plate 3 are used to prevent the biliary tract support rod 1 from sliding in the body of the patient, and when the biliary tract support rod 1 needs to be removed, the flat support tube 4 is driven by a medical tool, then the flat support tube 4 is pulled out of the body of the patient, and the traditional cylindrical stent is prevented from slipping when being driven by a tool.
[0030] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0031] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A retrievable biliary stent comprising: Biliary tract support rod (1), bile drainage hole (2) and wing plate (3), the bile drainage hole (2) is uniformly arranged on the outside of the biliary tract support rod (1), and the wing plate (3) is assembled on both sides of the outside of the biliary tract support rod (1), characterized in that: the biliary tract support rod (1) is equipped with flat support tube (4) on both sides, and the outside of the flat support tube (4) is uniformly provided with barb (41).
2. The easily retrievable biliary stent according to claim 1, wherein: Both sides of the biliary tract support rod (1) are equipped with a stop ring (12), which is an annular light shielding ring assembled on the outside of the biliary tract support rod (1).
3. The easily retrievable biliary stent according to claim 1, wherein: The biliary tract support rod (1) is composed of titanium nickel memory alloy wire (11), and multiple groups of titanium nickel memory alloy wire (11) are processed by cross weaving.
4. The easily retrievable biliary stent according to claim 1, wherein: The inside of the flat support tube (4) is uniformly provided with a crease (42), and the crease (42) is a transverse groove.
5. The easily retrievable biliary stent according to claim 1, wherein: The barb (41) is arranged on the outside of the flat support tube (4) at an angle of 45°, and the end away from the flat support tube (4) is rounded.
6. The easily retrievable biliary stent according to claim 1, wherein: The bile drainage hole (2) includes a bottom end and a top end, the bottom end is assembled on the outside of the biliary tract support rod (1), and the bottom end is composed of a spring plate, and the top end is inclinedly arranged on the top of the bottom end.