Vascular access guide wire connector for nephrology department
By designing a nephrological vascular access guide wire guide device including a guide head body, a glue plug and an inverted conical valve, the difficulty of the guide wire is solved when it passes through the stenosis or the fistula in the reverse blood flow direction, and the rapid and smooth access and exit of the guide wire is achieved.
Patent Information
- Application Number
- CN202421404034.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-19
AI Technical Summary
In the prior art, the operation of the vascular access guide wire in nephrology is difficult and complex in structure, which is not conducive to rapid access and use. Especially when the guide wire is reversed in the direction of blood flow, it is difficult to pass through the stenosis or fistula.
A nephrology vascular access wire guide device is designed, including a blood vessel sheath and a guidewire body. The tip of the blood vessel sheath is arranged to cooperate with the rubber plug. An inverted conical valve is provided inside. The guidewire body penetrates along the center of the valve. The valve expands and facilitates passage when the guidewire enters and returns to its original state when it exits.
Through this guide wire guide, after the guide wire first enters the vascular sheath, the valve expands and makes the guide wire easier to pass. When it exits, the valve returns to its original state, which is easy to access and use, and has a simple structure and is suitable for guide wire operation of the vascular pathway of nephrology.
Smart Images
Figure CN222788300U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical equipment, in particular to a guide wire introducer for a vascular access of a nephrology department. Background Art
[0002] For vascular access in the Department of Nephrology, the conventional method is to insert the needle and guide wire from the proximal end against the direction of blood flow to pass through the stenosis. However, it is difficult to pass the guide wire through the stenosis or fistula from the proximal end against the direction of blood flow, such as venous valve or angle problems. The current method to solve this technical problem is to insert the guide wire from the direction of blood flow. The guide wire can easily pass through the stenosis and opening, but it is not easy to place a sheath at the fistula or arterial end. This method of sheathing causes greater damage to the arterial blood vessels and openings. Therefore, the needle-threading method is often used clinically to pass through the stenosis along the blood flow and place a sheath at the distal end. However, this technology requires excellent ultrasound guidance and extremely high operating feel, otherwise it is very easy to lead to surgical failure. Therefore, a new type of guidewire introducer is needed clinically to help the guidewire smoothly enter the proximal vascular sheath.
[0003] In the prior art, it is difficult to insert the guide wire into the inner part of the vascular sheath, and the structure is complicated, which is not conducive to the rapid insertion and use of the actual guide wire. Utility Model Content
[0004] The utility model aims to solve the shortcomings of the prior art that the guide wire is difficult to operate and difficult to access, and proposes a guide wire introducer for a vascular access of the renal internal medicine department.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a vascular access guidewire introducer for renal internal medicine, comprising a vascular sheath and a guidewire body, the end of the vascular sheath is connected to a guide head body, the top of the guide head body is connected to a rubber plug, the side of the rubber plug is connected to a gas filter tube, a valve is provided inside the guide head body, the top of the rubber plug is penetrated by a guidewire body, and the guidewire body is located inside the vascular sheath after penetrating along the center of the valve.
[0006] Preferably, the end of the connecting head body is sleeved with the end of the vascular sheath, and the vascular sheath and the end of the connecting head body are interference fit.
[0007] Preferably, the bottom end of the rubber plug is sleeved on the top surface of the connector body, and the connection position between the rubber plug and the top of the connector body is sealed, and the connection end between the rubber plug and the gas filter tube is sealed.
[0008] Preferably, the valve is in an inverted cone shape, and the corresponding positions of the lead body and the valve bottom end are inverted cone shapes, and the outer wall of the valve top end abuts against the inner wall of the lead body.
[0009] Preferably, the outer surfaces of the connector body are all rounded, and the outer edges of the rubber plug are all deburred.
[0010] Preferably, the vertical center line of the vascular sheath, the vertical center line of the connector body and the vertical center line of the rubber plug all coincide with each other.
[0011] Preferably, the main body of the connector is made of rubber material by injection molding, and the outer edges of the main body of the connector are deburred, and the valve is a one-way valve.
[0012] Beneficial Effects
[0013] In the utility model, an introducer main body is arranged at the top of the vascular sheath to cooperate with a rubber plug to access the guide wire main body, and an inverted cone-shaped valve arranged inside is used for guidance, so that after the guide wire main body initially enters the vascular sheath, the valve can expand, so that the position of the docking port becomes larger, and the guide wire main body is easier to pass through. When it is pulled back, the introducer valve opening becomes smaller and returns to the vascular sheath, and is unsheathed together with the guide wire main body. The structure is simple, easy to operate, and convenient for rapid access and use of the guide wire in the vascular access of the renal internal medicine department. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional structural diagram of the utility model;
[0015] Figure 2 This is a split structure diagram of the utility model;
[0016] Figure 3 It is a structural diagram of the internal part of the utility model;
[0017] Figure 4 This is a diagram showing the internal structure of the main body of the receiving head of the utility model;
[0018] Figure 5 This is an axonometric view of the interior of the main body of the connecting head of the utility model.
[0019] Legend:
[0020] 1. Connector body; 2. Guidewire body; 3. Vascular sheath; 4. Rubber plug; 5. Gas filter tube; 6. Valve. DETAILED DESCRIPTION
[0021] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.
[0022] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings. Specific embodiment one:
[0024] Reference Figure 1-5 , a guidewire introducer for vascular access in renal medicine, comprising a vascular sheath 3 and a guidewire body 2, wherein an introducer head body 1 is connected to the end of the vascular sheath 3, a rubber plug 4 is connected to the top of the introducer head body 1, a gas filter tube 5 is connected to the side of the rubber plug 4, and the gas filter tube 5 is connected to the side of the rubber plug 4, and is used to filter the gas entering the inside of the introducer head body 1 when the guidewire body 2 is inserted or removed. It has a high-efficiency filtering ability to prevent microorganisms, particles or other contaminants from entering the vascular system, and a valve 6 is arranged inside the introducer head body to allow the guidewire body 2 to move freely in one direction while preventing blood from flowing back into the inside of the introducer head body 1, and the valve 6 should be made of a soft and durable material to ensure that the guidewire body 2 will not be damaged when it moves, and can fit tightly around the guidewire body 2, the guidewire body 2 is penetrated at the top of the rubber plug 4, and the guidewire body 2 is located inside the vascular sheath 3 after penetrating along the center of the valve 6, and the guidewire body 2 is located inside the vascular sheath 3, and the guidewire body 2 is the core part of the vascular intervention device The invention relates to a device for guiding the vascular sheath 3 and other medical devices into the vascular system. The device should be made of a soft material with a certain rigidity to ensure that the device can smoothly move forward and turn in the blood vessel, and has sufficient strength to withstand various forces that may be generated during the operation. The valve 6 is inverted cone-shaped, and the corresponding position of the introducer body 1 and the bottom end of the valve 6 is inverted cone-shaped. The outer wall of the top end of the valve 6 is against the inner wall of the introducer body 1. When the entire introducer body 1 is actually used, the introducer body 1 is arranged at the top end of the vascular sheath 3 to cooperate with the rubber plug 4 to access the guide wire body 2, and is guided by the inverted cone-shaped valve 6 arranged inside, so that after the guide wire body 2 initially enters the vascular sheath 3, the valve 6 can expand, so that the position of the docking port becomes larger, and the guide wire body 2 is easier to pass. When the valve 6 of the introducer is pulled back, the opening of the introducer valve 6 becomes smaller, and the valve 6 returns to the vascular sheath 3 and is unsheathed together with the guide wire body 2. The device has a simple structure and is easy to operate, which is convenient for the rapid access and use of the guide wire of the vascular access of the renal department.
[0025] When the vascular sheath 3 is connected to the entire device, the end of the connecting head body 1 is arranged to be sleeved with the end of the vascular sheath 3, and the vascular sheath 3 and the end of the connecting head body 1 are interference fit to maintain sealing and prevent falling off. It has sufficient strength and stability to withstand various forces that may be generated during the operation. The bottom end of the rubber plug 4 is sleeved on the top surface of the connecting head body 1, and the connection position between the rubber plug 4 and the top of the connecting head body 1 is sealed. The connection end of the rubber plug 4 and the gas filter tube 5 is sealed to seal the connecting head body 1 to prevent leakage of blood or other liquids. The rubber plug 4 should be made of soft and durable material to ensure that it will not be broken or damaged during insertion and removal of the guide wire body 2.
[0026] Other limiting structures of the entire device are as follows: the outer surfaces of the connector body 1 are all rounded, the outer edges of the rubber plug 4 are all deburred, the vertical center lines of the vascular sheath 3, the vertical center lines of the connector body 1 and the vertical center lines of the rubber plug 4 all coincide with each other, the connector body 1 is injection molded with rubber material, and the outer edges of the connector body 1 are all deburred, the connector body 1 is made of flexible materials, such as silicone, rubber, etc. These materials have good flexibility and elasticity, and can be bent to adapt to blood vessels at different angles, thereby improving the applicability and ease of operation of the device, the valve 6 is a one-way valve 6, the valve 6 is designed to open in one direction, and only allows the guide wire body 2 to move freely in one direction, when the guide wire body 2 moves forward, the valve 6 automatically opens; when the guide wire body 2 moves backward or does not move, the valve 6 remains closed to prevent blood from flowing back into the connector body 1. Specific embodiment 2:
[0028] Reference Figure 1-5 In actual use, the surface of the vascular sheath 3 is coated with a lubricating coating to reduce the friction of the vascular sheath 3 in the blood vessel, thereby improving the smoothness of insertion and removal. The lubricating coating should be made of non-toxic, non-irritating and durable materials to ensure that no damage or irritation is caused to the blood vessel wall during the operation.
[0029] In actual use, a detachable connection structure, such as a threaded connection, a snap connection, etc., is provided between the vascular sheath 3 and the connector body 1. This design allows the doctor to replace the vascular sheath 3 or the connector body 1 as needed during the operation to adapt to different interventional treatment needs. At the same time, the connection structure should have sufficient stability and sealing to ensure that no leakage or falling off occurs during the operation.
[0030] A filter is provided at the other end of the gas filter tube 5 for filtering the gas entering the interior of the connector body 1. The filter should be made of high-efficiency filtering materials, such as activated carbon, cellulose, etc., to ensure that microorganisms, particles or other pollutants in the gas can be filtered out.
[0031] In summary:
[0032] The introducer body 1 is arranged at the top of the vascular sheath 3 to cooperate with the rubber plug 4 to access the guide wire body 2, and is guided by the inverted cone-shaped valve 6 arranged inside, so that after the guide wire body 2 initially enters the vascular sheath 3, the valve 6 can expand, so that the docking position becomes larger, and the guide wire body 2 is easier to pass through. When it is pulled back, the opening of the introducer valve 6 becomes smaller and returns to the vascular sheath 3, and is unsheathed together with the guide wire body 2. It has a simple structure and is easy to operate, and is convenient for the rapid access and use of the guide wire in the vascular access of the renal internal medicine department.
[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. A guidewire introducer for vascular access in renal medicine, comprising a vascular sheath (3) and a guidewire body (2), characterized in that: The end of the vascular sheath (3) is connected to a connecting head body (1), the top of the connecting head body (1) is connected to a rubber plug (4), the side of the rubber plug (4) is connected to a gas filter tube (5), a valve (6) is provided inside the connecting head body, the top of the rubber plug (4) is penetrated by a guide wire body (2), and the guide wire body (2) is located inside the vascular sheath (3) after penetrating along the center of the valve (6).
2. A guidewire introducer for vascular access in renal medicine according to claim 1, characterized in that: The end of the connector body (1) is sleeved with the end of the vascular sheath (3), and the vascular sheath (3) and the end of the connector body (1) are interference-fitted.
3. A guidewire introducer for vascular access in renal medicine according to claim 1, characterized in that: The bottom end of the rubber plug (4) is sleeved on the top surface of the connector body (1), and the connection position between the rubber plug (4) and the top end of the connector body (1) is sealed, and the connection end between the rubber plug (4) and the gas filter tube (5) is sealed.
4. A guidewire introducer for vascular access in renal medicine according to claim 1, characterized in that: The valve (6) is in the shape of an inverted cone, and the corresponding positions of the connector body (1) and the bottom end of the valve (6) are in the shape of an inverted cone, and the outer wall of the top end of the valve (6) abuts against the inner wall of the connector body (1).
5. A guidewire introducer for vascular access in renal medicine according to claim 1, characterized in that: The outer surfaces of the connector body (1) are all rounded, and the outer edges of the rubber plug (4) are all deburred.
6. A guidewire introducer for vascular access in renal medicine according to claim 1, characterized in that: The vertical center line of the vascular sheath (3), the vertical center line of the connector body (1) and the vertical center line of the rubber plug (4) all coincide with each other.
7. A guidewire introducer for vascular access in renal medicine according to claim 1, characterized in that: The connector body (1) is injection-molded from a rubber material, and the outer edges of the connector body (1) are deburred, and the valve (6) is a one-way valve (6).