Medical hydrophilic guide wire

Abstract

The utility model discloses a medical hydrophilic guide wire, which is applied to the field of medical instruments and comprises an inner guide wire, an outer guide wire is fixedly sleeved on the surface of the inner guide wire, and a transparent sleeve is fixedly sleeved on the surface of the outer guide wire. Through the arrangement of the inner guide wire, the end, the overflow groove, the ball, the tail end connector and the sealing plug, the sealing plug can be punctured by the needle head of the injection needle in which a hydrophilic agent is extracted, the hydrophilic agent is injected into the inner guide wire, and the hydrophilic agent can overflow the end to reach the front end of the guide wire through a gap between the overflow groove and the ball after being injected, so that the hydrophilic agent is added; the lubricity of the end head during forward movement is improved, and the problem that friction force is increased due to excessive consumption of a hydrophilic agent at the front end after the guide wire is input into a human body is solved; by arranging the scale marks, the transparent sleeve and the outer guide wire, the transparent sleeve is made of transparent materials, so that medical staff can conveniently observe the scale marks on the outer guide wire, and the effect of assisting the medical staff in judging the conveying length of the guide wire can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a medical hydrophilic guidewire. Background Technology

[0002] A guidewire is a flexible and slender medical device used to assist medical equipment in passing through narrow or hard-to-reach areas. Guidewires are commonly used to guide other medical devices through narrow or blocked blood vessels or tubes. Their working principle is based on physical properties such as flexibility and plasticity, allowing them to bend to adapt to complex anatomical structures. In existing guidewires, the hydrophilic agent coated at the tip is continuously consumed by friction during delivery. Over long delivery distances, the hydrophilic agent disappears due to consumption, resulting in increased friction at the guidewire tip. To avoid this, we propose a medical hydrophilic guidewire. Utility Model Content

[0003] The purpose of this invention is to provide a medical hydrophilic guidewire, which has the advantage of allowing the addition of hydrophilic agents.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a medical hydrophilic guidewire, comprising an inner guidewire, an outer guidewire fixedly sleeved on the surface of the inner guidewire, a transparent sleeve fixedly sleeved on the surface of the outer guidewire, and graduation lines sprayed on the surface of the outer guidewire; an end cap fixedly connected to the front end of the inner guidewire, an overflow groove being formed inside the end cap, a ball being rotatably connected inside the overflow groove, and a tail end connector fixedly installed at the tail end of the inner guidewire, with a sealing plug fixedly sleeved inside the tail end connector.

[0005] Using the above technical solution, by setting up an inner guidewire, an end cap, an overflow groove, a ball bearing, a tail connector, and a sealing plug, the injection needle tip, which has been filled with hydrophilic agent, can pierce the sealing plug and inject the hydrophilic agent into the interior of the inner guidewire. After injection, the hydrophilic agent overflows through the gap between the overflow groove and the ball bearing, reaching the front end of the guidewire. This adds hydrophilic groups, improves the lubrication of the end cap as it moves forward, and avoids the problem of increased friction due to excessive consumption of hydrophilic agent at the front end after the guidewire is inserted into the human body. By setting up graduation lines, a transparent sleeve, and an outer guidewire, the transparent material of the sleeve allows medical personnel to easily observe the graduation lines on the outer guidewire, which can help medical personnel judge the guidewire delivery length.

[0006] The present invention is further configured such that one side of the overflow groove is connected to the interior of the inner guide wire.

[0007] By adopting the above technical solution, the overflow groove and the internal connection of the inner guide wire can facilitate the overflow of hydrophilic agent to the front end of the guide wire through the overflow groove.

[0008] The present invention is further configured such that the ball rotates inside the overflow groove and does not contact the end wall.

[0009] Using the above technical solution, the outer side of the ball can contact the blood vessel membrane of the human body. As the guidewire is delivered, the ball can roll to increase the smoothness of delivery. Moreover, the gap between the overflow groove and the ball allows the hydrophilic agent injected inside the inner guidewire to overflow to the front end of the guidewire.

[0010] The present invention is further configured such that the surface of the transparent sleeve is coated with a hydrophilic agent.

[0011] Using the above technical solution, the hydrophilic agent is polyvinylpyrrolidone (PVP). PVP is a commonly used hydrophilic coating material with good biocompatibility and lubricity, which can effectively reduce the friction of the guidewire in interventional surgery and improve the smoothness and safety of the operation.

[0012] The present invention is further configured such that the sealing plug is specifically medical rubber.

[0013] Using the above technical solution, the hydrophilic agent can be extracted using an injection needle by setting a sealing plug. The needle tip can pierce the sealing plug into the interior of the inner guidewire and inject the hydrophilic agent into the interior of the inner guidewire.

[0014] In summary, this utility model has the following beneficial effects:

[0015] This invention, by setting an inner guidewire, an end, an overflow groove, a ball, a tail connector, and a sealing plug, allows the injection needle tip, which has extracted the hydrophilic agent, to pierce the sealing plug and inject the hydrophilic agent into the interior of the inner guidewire. After injection, the hydrophilic agent overflows through the gap between the overflow groove and the ball and reaches the front end of the guidewire, thereby adding hydrophilic groups, improving the lubrication when the end moves forward, and avoiding the problem of increased friction due to excessive consumption of hydrophilic agent at the front end after the guidewire is inserted into the human body.

[0016] By setting scale lines, a transparent sleeve, and an external guidewire, the transparent material of the sleeve makes it easy for medical staff to observe the scale lines on the external guidewire, which can help medical staff judge the guidewire delivery length. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the external guide wire of this utility model;

[0019] Figure 3 This is a schematic diagram of the external guide wire of this utility model;

[0020] Figure 4 This is a utility model Figure 3 Enlarged view of the structure at point A

[0021] Figure 5 This is a partial structural cross-sectional view of this utility model.

[0022] Reference numerals: 1. Inner guide wire; 2. Outer guide wire; 3. Transparent sleeve; 4. Scale line; 5. End; 6. Overflow groove; 7. Ball bearing; 8. Tail end connector; 9. Sealing plug. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings. Example 1:

[0024] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A medical hydrophilic guidewire includes an inner guidewire 1, an outer guidewire 2 fixedly sleeved on the surface of the inner guidewire 1, a transparent sleeve 3 fixedly sleeved on the surface of the outer guidewire 2, and graduation lines 4 sprayed on the surface of the outer guidewire 2; an end cap 5 is fixedly connected to the front end of the inner guidewire 1, an overflow groove 6 is formed inside the end cap 5, a ball bearing 7 is rotatably connected inside the overflow groove 6, and a tail connector 8 is fixedly installed at the tail end of the inner guidewire 1, with a sealing plug 9 fixedly sleeved inside the tail connector 8; by setting the inner guidewire 1, end cap 5, overflow groove 6, ball bearing 7, tail connector 8 and sealing plug 9, the extracted hydrophilic guidewire can be used to extract the hydrophilic guidewire. The needle tip of the injection needle pierces the sealing plug 9 and injects the hydrophilic agent into the interior of the inner guidewire 1. After injection, the hydrophilic agent overflows through the gap between the overflow groove 6 and the ball 7 to the front end of the guidewire 5, thereby adding hydrophilic agent and improving the lubrication of the front end 5 when it moves forward. This avoids the problem of excessive consumption of hydrophilic agent at the front end and increased friction after the guidewire is inserted into the human body. By setting the scale line 4, the transparent sleeve 3 and the outer guidewire 2, the transparent material of the transparent sleeve 3 makes it easy for medical personnel to observe the scale line 4 on the outer guidewire 2, which can help medical personnel judge the guidewire delivery length.

[0025] Furthermore, one side of the overflow groove 6 is connected to the interior of the inner guide wire 1. Through the connection between the overflow groove 6 and the interior of the inner guide wire 1, the hydrophilic agent can easily overflow through the overflow groove 6 to the front end of the guide wire.

[0026] Furthermore, the ball 7 rotates inside the overflow groove 6. The ball 7 does not contact the wall of the end 5. The outer side of the ball 7 can contact the blood vessel membrane of the human body. As the guide wire is delivered, the ball 7 can roll to increase the smoothness of delivery. Moreover, the gap between the overflow groove 6 and the ball 7 allows the hydrophilic agent injected inside the inner guide wire 1 to overflow to the front end of the guide wire.

[0027] Furthermore, the surface of the transparent sleeve 3 is coated with a hydrophilic agent, which is polyvinylpyrrolidone. Polyvinylpyrrolidone is a commonly used hydrophilic coating material with good biocompatibility and lubricity, which can effectively reduce the friction of the guidewire in interventional surgery and improve the smoothness and safety of the operation.

[0028] Furthermore, the sealing plug 9 is specifically made of medical rubber. With the setting of the sealing plug 9, the hydrophilic agent can be extracted using an injection needle. The needle tip of the injection needle can pierce the sealing plug 9 to the inside of the inner guide wire 1 and inject the hydrophilic agent into the inside of the inner guide wire 1.

[0029] Brief description of usage:

[0030] In use, the guidewire is passed through the guidewire sheath and delivered.

[0031] As the guidewire is inserted deeper, the tip 5 of the guidewire will come into contact with the patient's blood vessel wall. As the guidewire is inserted deeper, the hydrophilic agent coated on the surface of the tip 5 will be consumed due to excessive friction.

[0032] To avoid excessive consumption of the hydrophilic agent, an injection needle can be used to extract the hydrophilic agent, and then the needle tip of the injection needle can be used to pierce the sealing plug 9 into the interior of the inner guide wire 1, and the hydrophilic agent can be injected into the interior of the inner guide wire 1 through the injection needle.

[0033] As the hydrophilic agent is injected, it flows through the inner guide wire 1 and overflows onto the surface of the end 5 through the gap between the overflow groove 6 and the ball 7. As the guide wire is input, the end 5 will be lubricated by the overflowing hydrophilic agent, thus avoiding excessive consumption of hydrophilic agent and increased input friction.

[0034] To help medical staff determine the length of the guidewire inside the body, they can see the scale line 4 on the outer guidewire 2 inside the transparent sleeve 3. The length of the guidewire inside the body can be determined by the scale line 4.

[0035] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A medical hydrophilic guidewire, comprising an inner guidewire (1), characterized in that: The inner guide wire (1) is fixedly sleeved with an outer guide wire (2), the outer guide wire (2) is fixedly sleeved with a transparent sleeve (3), and the outer guide wire (2) is sprayed with scale lines (4); the front end of the inner guide wire (1) is fixedly connected with an end head (5), the end head (5) is provided with an overflow groove (6), the overflow groove (6) is rotatably connected with a ball (7), the tail end of the inner guide wire (1) is fixedly installed with a tail end connector (8), and the tail end connector (8) is fixedly sleeved with a sealing plug (9).

2. The medical hydrophilic guidewire according to claim 1, characterized in that: One side of the overflow groove (6) is connected to the inside of the inner guide wire (1).

3. The medical hydrophilic guidewire according to claim 1, characterized in that: The ball (7) rotates inside the overflow groove (6) and does not contact the end (5) wall.

4. The medical hydrophilic guidewire according to claim 1, characterized in that: The surface of the transparent sleeve (3) is coated with a hydrophilic agent.

5. A medical hydrophilic guidewire according to claim 1, characterized in that: The sealing plug (9) is specifically made of medical rubber.

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