Balloon catheter device for butt joint of guide wires
The balloon catheter device with an arc-shaped structure simplifies guidewire connection by expanding the catheter entry point and ensuring smooth vessel wall adherence, addressing alignment challenges and reducing intervention time.
Patent Information
- Application Number
- CN202421936587.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-09
AI Technical Summary
In the prior art, it is difficult to successfully complete the docking of the guidewire and the catheter in the blood vessel, resulting in increased difficulty and prolonged operation.
A balloon catheter device is designed, including a tubular catheter and a balloon assembly. The balloon is close to the outside of the catheter when it is not inflated. After inflation, it forms an arcuate guide with the arcuate structure to guide the docking of the guide wire and control the degree of balloon expansion through a limiting tie, combining the arcuate structure between the guide wire and the catheter to simplify the docking process.
Through the guidance of the arc-shaped guide and the fitting of the balloon with the blood vessel wall, the difficulty of the guidewire and the catheter are significantly reduced and the surgical time is shortened.
Smart Images
Figure CN223095961U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a balloon catheter device for wire docking. Background Art
[0002] Vascular intervention therapy is a new technology for diagnosing and treating vascular diseases. Without surgery, under the guidance of X-rays, through puncturing the superficial blood vessels and with the help of certain instruments, a catheter can be sent to the diseased part to achieve the purpose of treating diseases. It is between medical treatment and surgical treatment and is an invasive diagnosis and treatment method.
[0003] During such surgeries, sometimes it is necessary to complete the docking of a guide wire and a catheter inside the blood vessel. Since the middle of the catheter is hollow and its cavity is small, and at the same time, since the catheter is much smaller than the blood vessel lumen, when delivering and docking the guide wire, the guide wire can only float continuously in the blood vessel lumen, and the success rate of smoothly sending it into the catheter opening is low, and it takes a long time, increasing the difficulty of the surgery.
[0004] Therefore, there is an urgent clinical need for a catheter that is very easy to dock with a guide wire. Summary of the Utility Model
[0005] The technical problem solved by the utility model is to provide a balloon catheter device for wire docking with a simple structure and convenient wire docking.
[0006] To solve the above technical problem, the balloon catheter device for wire docking provided by the utility model includes a catheter and a balloon assembly. The catheter is a tubular structure, and the connection part of the catheter expands outward to form an arc-shaped structure for guiding. The balloon of the balloon assembly is connected to the arc-shaped structure. When the balloon is not inflated or not injected with contrast agent, the balloon closely adheres to the outside of the catheter. One side of the balloon is connected to the arc-shaped structure, and the other side of the balloon is sleeved on the outer wall of the catheter. When the balloon is inflated or injected with contrast agent, due to the expansion of the balloon, an outward-opening arc-shaped guide opening is formed jointly by one side of the balloon and the arc-shaped structure.
[0007] Preferably, the balloon assembly further includes a limiting tie strap. The side of the balloon connected to the outer wall of the catheter is sleeved inside the limiting tie strap, and the expansion degree of the balloon is restricted by the limiting tie strap.
[0008] Specifically, the limiting tie strap is adjustably sleeved on the catheter.
[0009] Specifically, the balloon assembly further includes a pipeline for filling the balloon. The pipeline is placed inside the balloon and is used to convey gas or contrast agent to the cavity structure of the balloon.
[0010] Preferably, the balloon catheter device for guide wire docking further includes a guide wire, and the guide wire is docked with the catheter through the arc-shaped guide port.
[0011] Preferably, the balloon is in a spherical structure when inflated.
[0012] Preferably, the diameter of the balloon when inflated is 2 mm to 8 mm.
[0013] Preferably, the size of the catheter is 4F to 8F.
[0014] Preferably, the balloon and the catheter are jointly wrapped to form the cavity structure of the balloon.
[0015] Compared with the prior art, the balloon catheter device for guide wire docking of the present utility model combines a catheter and a balloon assembly together. The catheter is a tubular structure, and the connection part of the catheter opens outward to form an arc-shaped structure for guiding. The arc-shaped structure can expand the connection part of the catheter. The balloon of the balloon assembly is connected to the arc-shaped structure. When the balloon is not inflated or not injected with contrast agent, the balloon closely adheres to the outside of the catheter. One side of the balloon is connected to the arc-shaped structure, and the other side of the balloon is sleeved on the outer wall of the catheter. When the balloon is inflated or injected with contrast agent, due to the expansion of the balloon, an arc-shaped guide port that opens outward is jointly formed by one side of the balloon and the arc-shaped structure. The catheter front end is provided with an arc-shaped guide port with a certain radian. On the one hand, it can play a guiding role in the docking of the guide wire and reduce the difficulty of guide wire docking. On the other hand, a balloon is sleeved between the edge of the arc-shaped guide port and the outer wall of the catheter. Before the guide wire needs to be docked with the catheter, by filling the balloon with gas or contrast agent, the balloon is bulged, so that the balloon fits with the blood vessel wall. The bulged balloon is arc-shaped and has a smooth transition with the arc-shaped guide port, which can further reduce the difficulty of guide wire and catheter docking and shorten the operation time. Description of the Drawings
[0016] Figure 1 It is a schematic internal structure diagram of the balloon catheter device for guide wire docking provided by the present utility model when applied to the inner wall of a blood vessel;
[0017] Figure 2 is Figure 1 the front view of;
[0018] Figure 3 It is a sectional view of the balloon catheter device for guide wire docking provided by the present utility model when applied to the inner wall of a blood vessel and the balloon is not inflated or not injected with contrast agent;
[0019] Figure 4 is Figure 3 the front view of;
[0020] Figure 5Cross-sectional view of the balloon catheter device for guide wire docking provided by the present utility model when applied to the inner wall of a blood vessel and the balloon is inflated or injected with contrast agent;
[0021] Figure 6 is Figure 5 front view of. Specific embodiments
[0022] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0023] Please refer to Figures 1 to 6 , the balloon catheter device 100 for guide wire 4 docking of the present utility model is suitable for cooperating with the inner wall 200 of a blood vessel. The balloon catheter device 100 for guide wire 4 docking of the present utility model includes a catheter 1 and a balloon assembly 2. The catheter 1 is a tubular structure. The connection part of the catheter 1 expands outward to form an arc-shaped structure 11 for guiding. The arc-shaped structure 11 can expand the connection part of the catheter 1. The balloon 21 of the balloon assembly 2 is connected to the arc-shaped structure 11. When the balloon 21 is not inflated or not injected with contrast agent, the balloon 21 is wrapped outside the catheter 1 (specifically, see Figures 3 to 4 ), the balloon 21 is closely attached to the outside of the catheter 1. One side of the balloon 21 is connected to the arc-shaped structure 11, and the other side of the balloon 21 is sleeved on the outer wall of the catheter 1. When the balloon 21 is inflated or injected with contrast agent, please refer to Figures 5 to 6 , due to the expansion of the balloon 21, an arc-shaped guide port 12 that expands outward is jointly formed by one side of the balloon 21 and the arc-shaped structure 11. The front end of the catheter 1 is provided with an arc-shaped guide port 12 with a certain curvature. On the one hand, it can play a guiding role in the docking of the guide wire 4 and reduce the difficulty of docking the guide wire 4. On the other hand, a balloon 21 is sleeved between the edge of the arc-shaped guide port 12 and the outer wall of the catheter 1. Before the guide wire 4 needs to be docked with the catheter 1, by filling the balloon 21 with gas or contrast agent, the balloon 21 is inflated, so that the balloon 21 fits with the blood vessel wall. The inflated balloon 21 is arc-shaped and has a smooth transition with the arc-shaped guide port 12, which can further reduce the difficulty of docking the guide wire 4 with the catheter 1 and shorten the operation time. In this embodiment, the balloon is mainly used for filling gas or contrast agent, but is not limited thereto. More specifically, as follows:
[0024] Please refer to Figures 3 to 6, the balloon assembly 2 further includes a limiting cable tie 3. One side of the balloon 21 connected to the outer wall of the catheter 1 is sleeved inside the limiting cable tie 3, and the expansion degree of the balloon 21 is restricted by the limiting cable tie 3. Specifically, the limiting cable tie 3 is adjustably sleeved outside the catheter 1. The expansion position of the balloon 21 is preset by the provided limiting cable tie 3. Moreover, the position of the limiting cable tie 3 is also related to the expansion shape of the balloon 21. The farther the limiting cable tie 3 is from the opening of the catheter 1, the more slender the balloon 21 becomes. Thus, by presetting the position of the balloon 21, the transition position between the balloon 21 and the arc-shaped guide opening 12 can be made smooth, ensuring the smooth docking of the guide wire 4 and the catheter 1. The balloon assembly 2 further includes a conduit 22 for filling the balloon. The conduit 22 is disposed inside the balloon 21. The conduit 22 is used to deliver gas or contrast agent to the cavity structure 23 of the balloon 21. The conduit 22 is in communication with the outside. The balloon 21 is inflated by injecting air through the conduit 22.
[0025] Please refer to Figures 5 to 6 , the balloon catheter device 100 for guide wire 4 docking further includes a guide wire 4. The guide wire 4 is docked with the catheter 1 through the arc-shaped guide opening 12. Preferably, when the balloon 21 is inflated, it has a spherical structure, but is not limited thereto.
[0026] Please refer to Figures 1 to 6 , when the balloon 21 is inflated, its diameter is 2 mm to 8 mm, and the size of the catheter 1 is 4F to 8F, but is not limited thereto. The balloon 21 and the catheter 1 together enclose to form the cavity structure 23 of the balloon 21.
[0027] Please refer to Figures 1 to 6 , the working principle of the balloon catheter device 100 for guide wire 4 docking of the present utility model is as follows:
[0028] During an interventional operation, after the guide wire 4 to be docked is sent into the target blood vessel cavity, the diameter of the blood vessel cavity is measured, and the balloon catheter device 100 of the present utility model with corresponding specifications and the size of the balloon 21 is selected according to the size of the target blood vessel cavity. It is sent into the target blood vessel cavity through the blood vessel sheath group channel, and through an external air supply port, a pressure pump is used to fill the contrast agent or gas to make the balloon 21 expand and adhere tightly to the blood vessel wall, and the guide wire 4 to be docked is sent into the only arc-shaped guide opening 12 that can be entered, thus completing the docking of the guide wire 4 and the catheter 1.
[0029] By combining the catheter 1 and the balloon assembly 2 together, the catheter 1 is a tubular structure. The connection part of the catheter 1 opens outward to form an arc-shaped structure 11 for guiding. The arc-shaped structure 11 can expand the connection part of the catheter 1. The balloon 21 of the balloon assembly 2 is connected to the arc-shaped structure 11. When the balloon 21 is not inflated or filled with contrast agent, the balloon 21 closely adheres to the outside of the catheter 1. One side of the balloon 21 is connected to the arc-shaped structure 11, and the other side of the balloon 21 is sleeved on the outer wall of the catheter 1 and connected. When the balloon 21 is inflated or filled with contrast agent, due to the expansion of the balloon 21, an outward-opening arc-shaped guiding port 12 is jointly formed by one side of the balloon 21 and the arc-shaped structure 11. The front end of the catheter 1 is provided with an arc-shaped guiding port 12 with a certain curvature. On the one hand, it can play a guiding role in the docking of the guide wire 4 and reduce the difficulty of docking the guide wire 4. On the other hand, a balloon 21 is sleeved between the edge of the arc-shaped guiding port 12 and the outer wall of the catheter 1. Before the guide wire 4 needs to be docked with the catheter 1, by filling the balloon 21 with gas or contrast agent, the balloon 21 is inflated, so that the balloon 21 fits with the blood vessel wall. The inflated balloon 21 is arc-shaped and has a smooth transition with the arc-shaped guiding port 12, which can further reduce the difficulty of docking the guide wire 4 with the catheter 1 and shorten the operation time.
[0030] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present invention by the same token.
Claims
1. A balloon catheter device for guide wire docking, characterized in that, It includes a catheter and a balloon assembly. The catheter is a tubular structure. The connection part of the catheter opens outward to form an arc-shaped structure for guiding. The balloon of the balloon assembly is connected to the arc-shaped structure. When the balloon is not inflated or filled with contrast agent, the balloon closely adheres to the outside of the catheter. One side of the balloon is connected to the arc-shaped structure, and the other side of the balloon is sleeved on the outer wall of the catheter and connected. When the balloon is inflated or filled with contrast agent, due to the expansion of the balloon, one side of the balloon and the arc-shaped structure jointly form an outward-opening arc-shaped guiding port.
2. The balloon catheter device for guide wire docking according to claim 1, wherein The balloon assembly further includes a limiting tie. The side of the balloon connected to the outer wall of the catheter is sleeved inside the limiting tie, and the expansion degree of the balloon is restricted by the limiting tie.
3. The balloon catheter device for guide wire docking according to claim 2, wherein, The limiting tie is adjustably sleeved on the catheter.
4. The balloon catheter device for guide wire docking according to claim 2, characterized in that, The balloon assembly further includes a pipeline for filling the balloon. The pipeline is disposed inside the balloon and is used to convey gas or contrast agent to the cavity structure of the balloon.
5. The balloon catheter device for guide wire docking according to claim 1, wherein, It further includes a guide wire, and the guide wire is docked with the catheter through the arc-shaped guiding port.
6. The balloon catheter device for guide wire docking according to claim 1, wherein When the balloon expands, it is in a spherical structure.
7. The balloon catheter device for guide wire docking according to claim 1, wherein The diameter of the balloon when it expands is 2 millimeters to 8 millimeters.
8. The balloon catheter device for guide wire docking according to claim 1, characterized in that, The size of the catheter is 4F to 8F.
9. The balloon catheter device for guide wire docking according to claim 1, wherein, The balloon and the catheter jointly enclose to form the cavity structure of the balloon.