Double-end zebra guide wire

Abstract

The utility model provides a double-end zebra guide wire which is composed of a core wire, a wrapping layer and a hydrophilic coating, the wrapping layer is wrapped outside the core wire, and the hydrophilic coating is coated on the outer surface of the wrapping layer. The double-end zebra guide wire is provided with a double-end inserting part and is divided into an inserting part I, a connecting part, an operating part and an inserting part II. The insertion part I is linear or arc-shaped, and the insertion part II is arc-shaped or linear; the core wires in the insertion part I and the insertion part II are metal wires, and the metal wires are spiral lines; the core wires in the connecting part and the operating part are metal wires; the metal wires are strip-shaped; scale marks are arranged on the wrapping layer of the operation part at intervals; the outer diameter of the operation part is the same as that of the insertion part II and is larger than that of the insertion part I. According to the duodenal papilla intubation device, intubation can be conducted through the straight-head or elbow insertion part and the thin-diameter or thick-diameter insertion part, the duodenal papilla intubation device can pass through a narrow opening more easily, the success rate of duodenal papilla intubation is higher, and the duodenal papilla intubation device can enter various accessory

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a double-headed zebra guidewire. Background Art

[0002] Choledochoscopes and duodenoscopes are routinely used to treat biliary and pancreatic diseases such as gallstones, bile duct strictures, and obstructive jaundice. Guidewires are commonly used in choledochoscopes and duodenoscopes, allowing rapid access through the duodenal papilla to the common bile duct or through strictures to the intrahepatic bile duct. Other endoscopic consumables, such as angiographic catheters, sphincterotomies, papillary dilation balloons, and biliary stents, must be placed under the guidance of a guidewire to ensure proper function.

[0003] Currently, commonly used guidewires are divided into two types according to their outer diameter: 0.035 inches and 0.025 inches. The 0.035-inch guidewire is thicker and has better rigidity. When inserting the guidewire through various accessory cavities, it is easier to feel whether there is resistance at the front end of the guidewire. Under the guidance of the 0.035-inch guidewire, the insertion of various accessories is also smoother. The 0.025-inch guidewire is thinner and can easily pass through stenosis or enter the common bile duct through the duodenal papilla. However, the guidewire has a poor grip and lacks rigidity, making it easy to bend. When inserting the guidewire through other accessory cavities, it is difficult to feel the resistance at the front end of the guidewire. When inserting various accessories under the guidance of the 0.025-inch guidewire, the accessories are difficult to place in the designated position due to the lack of rigidity of the guidewire.

[0004] Guidewires can be categorized as straight or curved based on the shape of their insertion portion. Straight guidewires are easier to navigate through straight cavities, while curved guidewires are more easily able to navigate twisted or angled cavities. When intubation with a straight guidewire fails, a second curved guidewire is often required.

[0005] The types of guidewires used in sequence include: 0.025-inch straight guidewire, 0.025-inch curved guidewire, 0.035-inch straight guidewire and 0.035-inch curved guidewire, which seriously increase the medical costs of patients. Utility Model Content

[0006] In response to the above technical problems, a double-headed zebra guidewire is provided. The technical means adopted by the utility model are as follows:

[0007] A double-headed zebra guidewire, consisting of a core wire, a wrapping layer and a hydrophilic coating, wherein the wrapping layer is wrapped around the outside of the core wire, and the hydrophilic coating is coated on the outer surface of the wrapping layer;

[0008] The double-headed zebra guidewire has a double-headed insertion portion, which is divided into an insertion portion I, a connecting portion, an operating portion and an insertion portion II that are sequentially connected to each other, wherein the connecting portion and the operating portion are located in the middle, and the insertion portion I and the insertion portion II are located at both ends;

[0009] The insertion part I is in a straight line or an arc shape, and the insertion part II is in an arc shape or a straight line; the core wires in the insertion part I and the insertion part II are both metal wires, and the metal wires are both spiral wires;

[0010] The core wires in the connecting portion and the operating portion are both metal wires, and the metal wires are both long strips; the wrapping layer of the operating portion is provided with scale marks at intervals, and the scale marks are distributed on both sides of the operating portion;

[0011] The outer diameters of the operating portion and the insertion portion II are the same and larger than the outer diameter of the insertion portion I.

[0012] Furthermore, the wrapping layers of the insertion part I and the insertion part II are both made of soft materials.

[0013] Furthermore, the wrapping layers of the connecting portion and the operating portion are both made of polyethylene.

[0014] Furthermore, the outer surfaces of the wrapping layers of the connecting portion and the operating portion are both provided with spiral zebra stripes.

[0015] Furthermore, the connecting portion is in a truncated cone structure, the outer diameter of one end of the connecting portion is the same as the outer diameter of the insertion portion I, and the outer diameter of the other end is the same as the outer diameter of the operating portion.

[0016] Furthermore, the outer diameter of the insertion portion I is 0.025 inches, and the outer diameters of the insertion portion II and the operating portion are 0.035 inches.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. The outer diameter of the insertion portion I at one end of the present invention is 0.025 inches, and the outer diameter of the insertion portion II and the operating portion at the other end is 0.035 inches, making it easier to pass through stenosis or enter the common bile duct via the duodenal papilla.

[0019] 2. The insertion portion at one end of the utility model is linear, while the other end is arc-shaped, thus realizing two functions of one guide wire.

[0020] 3. In the present invention, scale marks are provided at different positions on both sides of the operating portion, making it easier to observe the depth of the guide wire insertion.

[0021] Based on the above reasons, the present invention can be widely promoted in the fields of medical treatment and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 It is a structural diagram of the present utility model.

[0024] Figure 2 This is a structural diagram of the insertion part I, the connecting part, and the operating part of the utility model.

[0025] Figure 3 It is a structural diagram of the operating part and the insertion part II of the utility model.

[0026] In the figure: 1. core wire; 2. wrapping layer; 3. insertion part I; 4. connecting part; 5. operating part; 6. insertion part II; 7. scale mark. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] The utility model provides a double-headed zebra guidewire, which consists of a core wire 1, a wrapping layer 2 and a hydrophilic coating. The wrapping layer 2 is wrapped around the outside of the core wire 1, and the hydrophilic coating is coated on the outer surface of the wrapping layer 2.

[0029] The double-headed zebra guidewire is divided into an insertion part I3, a connecting part 4, an operating part 5 and an insertion part II6 which are connected to each other in sequence, wherein the connecting part 4 and the operating part 5 are located in the middle, and the insertion part I3 and the insertion part II6 are located at both ends.

[0030] The insertion portion I3 is in a straight line or an arc shape, and the insertion portion II6 is in an arc shape or a straight line shape.

[0031] The core wires in the insertion part I3 and the insertion part II6 are both metal wires, which are spiral wires. The wrapping layers of the insertion part I3 and the insertion part II6 are both soft materials (existing materials).

[0032] The core wires within the connecting portion 4 and the operating portion 5 are both long, strip-shaped metal wires. The outer surface of each of these wrappings is made of a material such as polyethylene (a conventional material), and each wrapping has spiral zebra stripes. The wrapping of the operating portion 5 also features multiple scale markings 7 at intervals. These markings are located at different locations on the operating portion 5, making it easier to observe the depth of the guidewire insertion. The scale markings 7 are located on both sides of the operating portion 5.

[0033] The outer diameters of the operating portion 5 and the insertion portion II 6 are identical and larger than the outer diameter of the insertion portion I 3. The outer diameter of the insertion portion I 3 at one end is 0.025 inches, while the outer diameters of the insertion portion II 6 and the operating portion 5 at the other end are 0.035 inches, making it easier to enter the common bile duct through stenosis or through the duodenal papilla.

[0034] The insertion portion I3 at one end may be in a straight line shape, while the insertion portion II6 at the other end may be in an arc shape, thereby realizing two functions of one guide wire.

[0035] The connecting portion 4 is in a truncated cone structure. The outer diameter of one end of the connecting portion 4 is the same as the outer diameter of the inserting portion I3 , and the outer diameter of the other end is the same as the outer diameter of the operating portion 5 .

[0036] The utility model can be inserted through two insertion parts, straight or bent, thin or thick, and is easier to pass through narrow openings, has a higher success rate of duodenal papilla intubation, and is also easier to enter various accessory cavities.

[0037] Duodenoscope-assisted sphincterotomy intubation with a zebra guidewire: The duodenoscope is positioned in the descending duodenum, and the duodenal papilla is located. The sphincterotomy with a guidewire is inserted through the duodenoscope's forceps channel into the duodenal lumen. The sphincterotomy's placement, axis, and curvature are adjusted at the papillary opening to secure the sphincterotomy. A guidewire is inserted into the sphincterotomy lumen. The thin, straight-tipped end of the guidewire is guided through the sphincterotomy and into the common bile duct through the papillary sphincter. Guidewire-guided sphincterotomy, balloon dilatation, lithotomy, and biliary stent placement or nasobiliary duct placement are performed. Finally, the duodenoscope and zebra guidewire are removed. If intubation with the thin, straight-tipped end fails, the wider, curved end can be used to increase the success rate of intubation.

[0038] Guidewire models: 0.025-inch straight head + 0.035-inch elbow; 0.025-inch elbow + 0.035-inch straight head; 0.025-inch straight head + 0.035-inch straight head; 0.025-inch elbow + 0.035-inch elbow.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A double-headed zebra guidewire, characterized in that: The invention comprises a core wire (1), a wrapping layer (2) and a hydrophilic coating, wherein the wrapping layer (2) wraps around the outside of the core wire (1), and the hydrophilic coating is coated on the outer surface of the wrapping layer (2); The double-headed zebra guidewire has a double-headed insertion portion, which is divided into an insertion portion I (3), a connecting portion (4), an operating portion (5) and an insertion portion II (6) which are sequentially connected to each other, wherein the connecting portion (4) and the operating portion (5) are located in the middle, and the insertion portion I (3) and the insertion portion II (6) are located at both ends; The insertion part I (3) is in a straight line or an arc shape, and the insertion part II (6) is in an arc shape or a straight line shape; the core wires in the insertion part I (3) and the insertion part II (6) are both metal wires, and the metal wires are both in a spiral shape; The core wires in the connecting portion (4) and the operating portion (5) are both metal wires, and the metal wires are both in the shape of long strips; scale marks (7) are provided at intervals on the wrapping layer of the operating portion (5), and the scale marks (7) are distributed on both sides of the operating portion (5); The outer diameters of the operating part (5) and the insertion part II (6) are the same and larger than the outer diameter of the insertion part I (3).

2. The double-headed zebra guidewire according to claim 1, characterized in that: The wrapping layers of the insertion part I (3) and the insertion part II (6) are both made of soft materials.

3. The double-headed zebra guidewire according to claim 1, characterized in that: The wrapping layers of the connecting portion (4) and the operating portion (5) are both made of polyethylene.

4. The double-headed zebra guidewire according to claim 1, characterized in that: The outer surfaces of the wrapping layers of the connecting portion (4) and the operating portion (5) are both provided with spiral zebra stripes.

5. The double-headed zebra guidewire according to claim 1, characterized in that: The connecting portion (4) is a truncated cone structure, the outer diameter of one end of the connecting portion (4) is the same as the outer diameter of the inserting portion I (3), and the outer diameter of the other end is the same as the outer diameter of the operating portion (5).

6. The double-headed zebra guidewire according to claim 1, characterized in that: The outer diameter of the insertion portion I (3) is 0.025 inches, and the outer diameters of the insertion portion II (6) and the operating portion (5) are 0.035 inches.

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