Balloon dilatation catheter
By adopting the design of gradient tube body and traction wire in the balloon dilation catheter, combined with rotary switch control, the flexible push and bending of the catheter is achieved, solving the problem of difficult to take into account the pushability and bending of the existing catheter, and improving the complexity Catheter passability and safety in blood vessels.
Patent Information
- Application Number
- CN202420491169.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-03-14
AI Technical Summary
The existing balloon dilated catheter is difficult to take into account both pushing and bending, making it difficult to reach the lesion area smoothly in complex vascular lesions.
A balloon dilated catheter including an inner catheter and an outer catheter is designed. The inner catheter has a gradient tube body and a traction wire. The pulling and replay of the traction wire is controlled by a rotary switch to realize the curve control of the catheter tip, and The filling cavity seat on the handle is connected through the gap between the inner and outer catheters to achieve balloon expansion and pressure relief.
This design improves the push performance and flexibility of the catheter, allows more flexibility to pass through the torsional blood vessel path, reduces damage to the blood vessel, and selects a suitable path through the lesion area through the bend control of the traction wire.
Smart Images
Figure CN222265920U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to a balloon dilatation catheter. Background Art
[0002] The development of catheter interventional therapy technology has basically covered the main cardiovascular diseases and has brought revolutionary changes to the treatment of cardiovascular diseases. Today, interventional therapy has become the first choice for coronary heart disease, structural heart disease, and large vessel disease, and has become the third largest treatment discipline after internal medicine and surgery. Compared with surgical operations, the entire process of interventional therapy is carried out under the guidance and monitoring of imaging equipment, and can accurately and directly reach the local lesion without major trauma. Therefore, it has the advantages of accuracy, safety, efficiency, wide adaptability, and few complications. At the same time, interventional therapy also has the advantages of less damage to normal tissues, fast recovery, and short hospitalization time.
[0003] As a treatment device in the process of interventional treatment, balloon dilatation catheter is used to dilate the narrow vascular lesion area, and it plays a very important role in interventional treatment. Common balloon dilatation catheters include three parts: catheter, balloon and handle. Through the filling cavity and catheter on the handle, the balloon is expanded or depressurized to achieve treatment of the lesion area. However, the current balloon dilatation catheter has the problem that the pushability and bendability cannot be taken into account at the same time, so it is difficult to reach the lesion area smoothly in many complex lesions.
[0004] In view of the above problems, a balloon dilatation catheter is proposed. Utility Model Content
[0005] The utility model aims to provide a balloon dilatation catheter, which solves the problem that the pushability and bendability of the balloon dilatation catheter in the background art cannot be taken into account at the same time.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a balloon dilatation catheter, comprising a catheter, a balloon and a handle, the catheter comprising an inner layer catheter and an outer layer catheter, the left side of the catheter is fixedly connected to the handle, the top of the handle is fixedly connected to a filling cavity seat, the right side of the catheter is fixedly connected to the balloon, the distal end of the balloon is connected to the inner layer catheter, the proximal end of the balloon is connected to the outer layer catheter, the handle is respectively connected to the inner layer catheter and the outer layer catheter, a rotary switch is arranged on the outside of the left side of the handle, a traction wire is arranged in the catheter, the rotary switch is fixedly connected to the traction wire, and the farthest end of the inner layer catheter is fixedly connected to a guide wire.
[0007] By adopting the above technical solution, the filling cavity seat on the handle and the balloon at the distal end of the catheter are connected through the gap between the inner catheter and the outer catheter, and the expansion and pressure relief of the balloon are achieved.
[0008] As a further description of the above technical solution: a gradient tube body is arranged in the inner tube, and the gradient tube body is made of 304 stainless steel and 316 stainless steel.
[0009] By adopting the above technical scheme, the gradual performance of the tube body is achieved through the angle, width and length of the slit on the tube body. At the proximal end of the gradual tube body, the slit angle is large, the slit width is small, and the slit length is short. The greater the rigidity of the tube body, the better the pushing performance of the catheter. At the distal end of the gradual tube body, the slit angle is small, the slit width is large, and the slit length is long, so the flexibility and bending ability of the tube body are better, which is conducive to passing through tortuous blood vessels and is not easy to damage blood vessels.
[0010] As a further description of the above technical solution: one right end of the traction wire is fixed to the right side of the balloon, and the other end of the traction wire is fixedly connected to the handle.
[0011] By adopting the above technical solution, the pulling and retraction of the traction wire are controlled by the rotary switch on the control handle to realize the function of bending control at the tip of the balloon dilatation catheter, so that the product can select a suitable path to pass through the lesion area.
[0012] As a further description of the above technical solution: a protective sleeve is arranged outside the guide wire.
[0013] By adopting the above technical solution, the product can be prevented from damaging blood vessels during the intervention process.
[0014] As a further description of the above technical solution: the guide wire is made of nickel-titanium alloy, and the sheath tube outside the guide wire is made of PU, PA, or PVC.
[0015] By adopting the above technical solution, the nickel-titanium alloy has good elasticity, corrosion resistance and wear resistance.
[0016] As a further description of the above technical solution: the gap between the inner layer catheter and the outer layer catheter is connected to the filling cavity seat on the handle and the balloon at the distal end of the catheter.
[0017] By adopting the above technical solution, the expansion and pressure relief of the balloon are achieved.
[0018] As a further description of the above technical solution: the outer catheter is made of PA, PVC or PE.
[0019] By adopting the above technical solution, the product has good weather resistance, chemical stability and mechanical strength.
[0020] As a further description of the above technical solution: the inner layer conduit is made of PA, PVC or PE.
[0021] By adopting the above technical solution, good stability is achieved.
[0022] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0023] 1. The utility model provides a balloon dilatation catheter, which first works in coordination with a gradient tube body, a traction wire, a balloon, a handle, and a rotary switch. A traction wire is built into the gradient tube body, one end of which is fixed to the tip of the balloon dilatation catheter, and the other end is fixed to the handle. The traction and retraction of the traction wire are controlled by controlling the rotary switch on the handle to realize the function of bending control at the tip of the balloon dilatation catheter, so that the product can select a suitable path to pass through the lesion area.
[0024] 2. The utility model provides a balloon dilatation catheter, which first realizes the gradual performance of the tube body through the angle, width and length of the slit on the tube body. The proximal end of the gradual tube body has a large slit angle, a small slit width and a short slit length. The greater the rigidity of the tube body, the better the pushing performance of the catheter. The distal end of the gradual tube body has a small slit angle, a large slit width and a long slit length, so the flexibility and bending ability of the tube body are better, which is conducive to passing through tortuous blood vessels and is not easy to damage blood vessels. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0026] Figure 2 It is a cross-sectional view of the catheter of the present utility model.
[0027] In the figure: 1. traction wire; 2. gradient tube body; 3. inner catheter; 4. outer catheter; 5. balloon; 6. guide wire; 7. sheath tube; 8. catheter; 9. handle; 10. filling chamber seat; 11. rotary switch. DETAILED DESCRIPTION
[0028] The following will refer to the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] In order to further understand the content of the utility model, the utility model is described in detail with reference to the accompanying drawings.
[0030] Reference Figure 1 and Figure 2A balloon dilatation catheter of the utility model comprises a catheter 8, a balloon 5 and a handle 9. The catheter 8 comprises an inner layer catheter 3 and an outer layer catheter 4. The left side of the catheter 8 is fixedly connected to the handle 9, and a filling cavity seat 10 is fixedly connected to the top of the handle 9. The right side of the catheter 8 is fixedly connected to the balloon 5. The distal end of the balloon 5 is connected to the inner layer catheter 3, and the proximal end of the balloon 5 is connected to the outer layer catheter 4. The handle 9 is respectively connected to the inner layer catheter 3 and the outer layer catheter 4. A rotary switch 11 is arranged on the left side of the handle 9. A traction wire 1 is arranged in the catheter 8. The rotary switch 11 is fixedly connected to the traction wire 1. The farthest end of the inner layer catheter 3 is fixedly connected to a guide wire 6. The handle 9 is respectively connected to the inner layer catheter 3 and the outer layer catheter 4, and the rotary switch 11 on the handle 9 is connected to the traction wire 1. The traction wire 1 can be controlled by rotating the rotary switch 11.
[0031] Reference Figure 1 and Figure 2 , a gradient tube body 2 is arranged in the inner catheter 3, and the gradient tube body 2 is made of 304 stainless steel and 316 stainless steel, which is conducive to passing through tortuous blood vessel paths and is not easy to damage blood vessels. One end of the right side of the traction wire 1 is fixed to the right side of the balloon 5, and the other end of the traction wire 1 is fixedly connected to the handle 9. The pulling and retraction of the traction wire 1 are controlled by the rotary switch 11 on the control handle 9 to realize the function of adjusting the bend control at the tip of the balloon 5 dilatation catheter, so that the product can select a suitable path to pass through the lesion area. A protective sleeve 7 is arranged on the outside of the guide wire 6, which can prevent the product from damaging blood vessels during the intervention process. The guide wire 6 is made of nickel-titanium alloy, and the sheath tube outside the guide wire 6 is made of PU, PA, PVC. The gap between the inner catheter 3 and the outer catheter 4 is connected to the filling cavity seat 10 on the handle 9 and the balloon 5 at the distal end of the catheter 8, and realizes the expansion and pressure relief of the balloon 5. The outer catheter 4 is made of PA, PVC or PE, and the inner catheter 3 is made of PA, PVC or PE.
[0032] Working principle: the filling cavity seat 10 on the handle 9 and the balloon 5 at the distal end of the catheter 8 are connected through the gap between the inner catheter 3 and the outer catheter 4, and the expansion and pressure relief of the balloon 5 are realized; the balloon 5 is located at the distal end of the balloon dilation catheter, the proximal end of the balloon 5 is connected to the outer catheter 4, and the distal end of the balloon 5 is connected to the inner catheter 3; the handle 9 is respectively connected to the inner catheter 3 and the outer catheter 4, and the rotary switch 11 on the handle 9 is connected to the traction wire 1, and the traction wire 1 is controlled by rotating the rotary switch 11, and the gradual tube body 2 realizes the gradual performance of the tube body through the angle, width and length of the slit on the tube body. At the proximal end of the gradual tube body 2, the slit angle is large, the slit width is small, the slit length is short, the greater the rigidity of the tube body, the guide The better the pushing performance of the tube 8 is, the smaller the incision angle, the larger the incision width, and the longer the incision length at the distal end of the gradient tube body 2, the better the flexibility and bending ability of the tube body, which is conducive to passing through the tortuous blood vessel path and not easy to damage the blood vessel; a traction wire 1 is built into the gradient tube body 2, one end of which is fixed to the tip of the balloon 5 dilatation catheter, and the other end is fixed to the handle 9. The pulling and retraction of the traction wire 1 are controlled by controlling the rotary switch 11 on the control handle 9 to realize the function of bending control at the tip of the balloon 5 dilatation catheter, so that the product can select a suitable path to pass through the diseased area; the distal end is fixed with a guide wire 6, which is fixed at the farthest end of the inner layer catheter 3, which includes a guide wire 6 and a sheath tube 7 covering the guide wire 6, which can prevent the product from damaging the blood vessel during the intervention process.
[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A balloon dilatation catheter, comprising a catheter (8), a balloon (5) and a handle (9), characterized in that: The catheter (8) comprises an inner catheter (3) and an outer catheter (4). The left side of the catheter (8) is fixedly connected to a handle (9). The top of the handle (9) is fixedly connected to a filling chamber seat (10). The right side of the catheter (8) is fixedly connected to a balloon (5). The distal end of the balloon (5) is connected to the inner catheter (3), and the proximal end of the balloon (5) is connected to the outer catheter (4). The handle (9) is connected to the inner catheter (3) and the outer catheter (4) respectively. A rotary switch (11) is arranged on the outside of the left side of the handle (9). A traction wire (1) is arranged inside the catheter (8). The rotary switch (11) is fixedly connected to the traction wire (1). The distal end of the inner catheter (3) is fixedly connected to a guide wire (6).
2. A balloon dilatation catheter according to claim 1, characterized in that: A gradient tube body (2) is arranged inside the inner layer conduit (3), and the gradient tube body (2) is made of 304 stainless steel or 316 stainless steel.
3. A balloon dilatation catheter according to claim 1, characterized in that: One right end of the traction wire (1) is fixed to the right side of the balloon (5), and the other end of the traction wire (1) is fixedly connected to the handle (9).
4. A balloon dilatation catheter according to claim 1, characterized in that: A protective sleeve (7) is arranged outside the guide wire (6).
5. The balloon dilatation catheter according to claim 1, characterized in that: The guide wire (6) is made of nickel-titanium alloy, and the sheath tube outside the guide wire (6) is made of PU, PA, or PVC.
6. A balloon dilatation catheter according to claim 1, characterized in that: The gap between the inner layer catheter (3) and the outer layer catheter (4) is connected to the filling cavity seat (10) on the handle (9) and the balloon (5) at the distal end of the catheter (8).
7. The balloon dilatation catheter according to claim 1, characterized in that: The outer layer conduit (4) is made of PA, PVC or PE.
8. The balloon dilatation catheter according to claim 1, characterized in that: The inner layer conduit (3) is made of PA, PVC or PE.