A catheter for vascular intervention

Abstract

This application provides a catheter for vascular interventional therapy, belonging to the field of medical device technology. The catheter includes a catheter assembly and a connecting assembly. The catheter assembly includes an outer tube, an inner tube, a balloon, and a connector. The inner tube passes through the outer tube, and the balloon is disposed at the tail end of the outer tube. The connecting assembly includes a catheter seat, an injection tube, a monitoring tube, and a pressure sensor. The catheter seat and the ends of the outer tube are connected opposite each other, and the inner tube is fixedly inserted through the catheter seat. By using the outer tube, inner tube, balloon, connector, catheter seat, injection tube, monitoring tube, and pressure sensor, and by having the inner tube pass through the outer tube and balloon, and then connecting to the bottom catheter seat with the connector, the outer and inner tubes can be disassembled and separated, facilitating retrieval. Simultaneously, the monitoring tube and pressure sensor connected to the catheter seat can monitor the pressure of the internal injection fluid, improving the safety of use.

Description

Technical Field

[0001] This application relates to the field of medical devices, and more specifically, to a catheter for vascular interventional therapy. Background Technology

[0002] Shockwave catheter intervention is used in the treatment of cardiovascular calcification. The shockwave catheter is used to dilate the lesion and restore normal blood flow. A traditional shockwave catheter consists of a balloon and one or more pairs of discharge electrodes to form a shockwave generator device. The electrodes are connected to a high-voltage pulse power supply via connectors. When the balloon is placed at the calcified lesion in the blood vessel, the system applies high-voltage pulses to generate shockwaves on the electrodes. These shockwaves selectively destroy calcified plaques in the blood vessel wall while avoiding damage to the vessel wall.

[0003] Currently, most traditional shock wave catheters are disposable, mainly consisting of an outer tube, balloon, catheter shaft, catheter seat, filling port, and guidewire outlet. They are inconvenient to recycle after use, especially the internal electrode plates, which are wasteful and make it difficult to monitor the pressure of the injected liquid inside the balloon. Summary of the Invention

[0004] To overcome the shortcomings of existing methods, this application provides a catheter for vascular interventional therapy, which solves the problem that traditional shockwave catheters are mostly disposable and mainly consist of an outer tube, balloon, catheter shaft, catheter seat, filling port and guidewire outlet. They are inconvenient to recycle after use, especially the internal electrode pads, which are wasteful and inconvenient to monitor the pressure of the injected fluid in the balloon.

[0005] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0006] A catheter for vascular interventional therapy includes a catheter assembly and a connection assembly.

[0007] The catheter assembly includes an outer tube, an inner tube, a balloon, and a connector. The inner tube extends through the outer tube, the balloon is located at the tail end of the outer tube, and the connector is located at the end of the outer tube.

[0008] The connecting assembly includes a catheter seat, an injection tube, a monitoring tube, and a pressure sensor. The catheter seat and the outer tube are connected to each other at their ends. The inner tube is fixedly inserted through the catheter seat. The connector is threaded to the catheter seat. The injection tube is connected to the catheter seat. The monitoring tube is connected to the catheter seat. The pressure sensor is located at the end of the monitoring tube.

[0009] In one specific implementation, a sleeve is threaded onto the tail end of the inner tube, and the sleeve abuts against the tail end of the outer tube.

[0010] In the above implementation process, a sleeve is set to lock the relative positions of the inner tube end and the outer tube end.

[0011] In one specific implementation, the inner tube is provided with an electrode ring, which is located inside the balloon.

[0012] In one specific implementation, the end of the conduit seat is connected to an externally threaded pipe, and the connector is threadedly connected to the externally threaded pipe.

[0013] In the above implementation process, by setting external threaded pipes and threaded adhesive on connectors, it is convenient to disassemble and recycle them.

[0014] In one specific implementation, a limiting ring is provided at the end of the outer tube, and the inner wall of the connector abuts against the limiting ring.

[0015] In the above implementation process, a limit ring is set to restrict the connector and connect to the external threaded pipe.

[0016] In one specific implementation, the catheter seat has an inner cavity, the injection tube is connected to the inner cavity, and the monitoring tube is connected to the inner cavity.

[0017] In the above implementation process, an inner cavity is provided to connect the injection tube, the inner cavity, the external threaded tube, and the inner tube, so that liquid can be injected into the balloon through the inner tube.

[0018] In one specific implementation, the conduit seat is trapezoidal and has a mating groove.

[0019] In the above implementation process, a docking slot is opened for connecting the cable to the cable handle.

[0020] In one specific implementation, both the outer tube and the inner tube are flexible tubes.

[0021] In the above process, the flexible bending tube is able to bend and travel through blood vessels.

[0022] The advantages of this embodiment are: by setting an outer tube, an inner tube, a balloon, a connector, a catheter seat, an injection tube, a monitoring tube, and a pressure sensor, and by having the inner tube pass through the outer tube and the balloon, and then connect it to the bottom catheter seat with the connector, the outer tube and the inner tube can be disassembled and separated, which is convenient for recycling. At the same time, the monitoring tube and the pressure sensor connected to the catheter seat can monitor the pressure of the internal injection fluid, thereby improving the safety of use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a catheter structure for vascular interventional therapy provided in an embodiment of this application;

[0024] Figure 2 A schematic diagram of the catheter assembly structure provided for an embodiment of this application;

[0025] Figure 3 A schematic diagram of the catheter seat structure provided for an embodiment of this application;

[0026] Figure 4 A schematic diagram of the balloon structure provided for an embodiment of this application.

[0027] In the diagram: 100-Catheter assembly; 110-Outer tube; 111-Limiting ring; 120-Inner tube; 121-Sheath; 122-Electrode ring; 130-Balloon; 140-Connector; 200-Connecting assembly; 210-Catheter seat; 211-External threaded tube; 212-Inner lumen; 214-Matching groove; 220-Injection tube; 230-Monitoring tube; 250-Pressure sensor. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with embodiments.

[0029] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0030] In the embodiments, unless otherwise specified, all methods used are conventional methods in the art.

[0031] Please see Figures 1-4 This application provides a catheter for vascular interventional therapy, including a catheter assembly 100 and a connecting assembly 200.

[0032] Please see Figure 1 , 2 3. The catheter assembly 100 includes an outer tube 110, an inner tube 120, a balloon 130, and a connector 140. The inner tube 120 passes through the outer tube 110, the balloon 130 is disposed at the tail end of the outer tube 110, and the connector 140 is disposed at the end of the outer tube 110.

[0033] The inner tube 120 has a threaded sleeve 121 at its tail end, which abuts against the tail end of the outer tube 110. The sleeve 121 is used to lock the relative positions of the tail ends of the inner tube 120 and the outer tube 110.

[0034] Specifically, the inner tube 120 is equipped with an electrode ring 122, which is located inside the balloon 130.

[0035] In one specific implementation, the end of the conduit seat 210 is connected to an externally threaded tube 211, and the connector 140 is threadedly connected to the externally threaded tube 211. By providing threaded adhesive to the externally threaded tube 211 and the connector 140, it is convenient to disassemble and recycle.

[0036] It should be noted that a limit ring 111 is provided at the end of the outer tube 110, and the inner wall of the connector 140 abuts against the limit ring 111. The limit ring 111 is used to limit the connector 140 and connect to the external threaded tube 211.

[0037] Please see Figure 1 , 2 4. The connecting assembly 200 includes a catheter seat 210, an injection tube 220, a monitoring tube 230, and a pressure sensor 250. The catheter seat 210 and the outer tube 110 are connected at their ends. The inner tube 120 is fixedly inserted through the catheter seat 210. The connector 140 is threaded to the catheter seat 210. The injection tube 220 is connected to the catheter seat 210. The monitoring tube 230 is connected to the catheter seat 210. The pressure sensor 250 is disposed at the end of the monitoring tube 230.

[0038] The catheter seat 210 has an inner cavity 212, the injection tube 220 is connected to the inner cavity 212, and the monitoring tube 230 is connected to the inner cavity 212. The inner cavity 212 is used to connect the injection tube 220, the inner cavity 212, the external threaded tube 211 and the inner tube 120, so that liquid can be injected into the balloon 130 through the inner tube 120.

[0039] Specifically, the conduit seat 210 is trapezoidal and has a mating groove 214, which is used to connect to the cable of the cable handle.

[0040] In one specific implementation, both the outer tube 110 and the inner tube 120 are flexible tubes that can bend and travel through blood vessels.

[0041] The working principle of this catheter for vascular interventional therapy is as follows: During use, physiological saline is injected through the injection tube 220. The injection tube 220 passes through the inner lumen 212, the external threaded tube 211, and the outer tube 110 into the balloon 130. The monitoring tube 230 and the pressure sensor 250 are connected to the inner lumen 212 of the catheter seat 210. The pressure of the injected fluid is monitored by the pressure sensor 250, which improves safety. After use, the catheter is retrieved by first rotating and removing the sleeve 121, and then rotating the connector 140 to rotate the connector 140 out of the external threaded tube 211 of the catheter seat 210. The catheter seat 210 can then be pulled out, which moves the inner tube 120 and pulls the inner tube 120 out of the outer tube 110, thus facilitating the retrieval of the inner tube 120 and the electrode coil 122 and saving costs.

[0042] It should be noted that the specific model and specifications of the pressure sensor 250 need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0043] The power supply and operating principle of the pressure sensor 250 are clear to those skilled in the art and will not be described in detail here.

[0044] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A catheter for vascular interventional therapy, characterized in that, include A catheter assembly (100) includes an outer tube (110), an inner tube (120), a balloon (130), and a connector (140). The inner tube (120) passes through the outer tube (110), the balloon (130) is disposed at the tail end of the outer tube (110), and the connector (140) is disposed at the end of the outer tube (110). A connecting assembly (200) includes a catheter seat (210), an injection tube (220), a monitoring tube (230), and a pressure sensor (250). The catheter seat (210) and the outer tube (110) are connected at their ends. The inner tube (120) is fixedly inserted through the catheter seat (210). The connector (140) is threaded to the catheter seat (210). The injection tube (220) is connected to the catheter seat (210). The monitoring tube (230) is connected to the catheter seat (210). The pressure sensor (250) is disposed at the end of the monitoring tube (230).

2. The catheter for vascular interventional therapy according to claim 1, characterized in that, The inner tube (120) is threaded with a sleeve (121) at its tail end, and the sleeve (121) abuts against the tail end of the outer tube (110).

3. The catheter for vascular interventional therapy according to claim 1, characterized in that, The inner tube (120) is provided with an electrode ring (122), which is located inside the balloon (130).

4. The catheter for vascular interventional therapy according to claim 1, characterized in that, The end of the conduit seat (210) is connected to an externally threaded pipe (211), and the connector (140) is threaded to the externally threaded pipe (211).

5. The catheter for vascular interventional therapy according to claim 1, characterized in that, The outer tube (110) is provided with a limiting ring (111) at its end, and the inner wall of the connector (140) abuts against the limiting ring (111).

6. The catheter for vascular interventional therapy according to claim 1, characterized in that, The catheter seat (210) has an inner cavity (212), the injection tube (220) is connected to the inner cavity (212), and the monitoring tube (230) is connected to the inner cavity (212).

7. The catheter for vascular interventional therapy according to claim 1, characterized in that, The conduit seat (210) is trapezoidal, and the conduit seat (210) is provided with a docking groove (214).

8. The catheter for vascular interventional therapy according to claim 1, characterized in that, Both the outer tube (110) and the inner tube (120) are flexible tubes.

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