A catheter for vascular treatment

Abstract

This application provides a catheter for vascular therapy, relating to the field of catheter technology. The catheter includes a catheter body with an elastic band connected to its inner wall, dividing the interior of the catheter body into a working chamber and an injection chamber. A connector assembly is connected to one end of the catheter body. By installing the elastic band on the inner wall of the catheter body, which divides the interior into a working chamber and an injection chamber, the injection chamber is used for injecting contrast agent, while a pre-set guidewire can be placed in the working chamber. This prevents channel interference during simultaneous contrast agent injection and shockwave balloon delivery. A connector is installed at one end of the catheter body, with a perforation and delivery hole on its sidewall. The perforation connects to the working chamber, and several sealing elements are installed within the perforation to achieve internal sealing, allowing the pre-set guidewire and shockwave balloon to pass through the perforation and enter the catheter body.

Description

Technical Field

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

[0002] Clinical endovascular interventional catheters are catheters used in clinical medicine for endovascular interventional treatments. They are convenient to use and have been widely adopted. During use, clinical endovascular interventional catheters can perform the following operations: In cardiac interventional surgery, under the guidance of medical imaging equipment, a shockwave balloon is inserted percutaneously into the narrowed part of the blood vessel, and shockwave therapy is performed under close monitoring to accelerate blood flow.

[0003] In actual cardiovascular treatment, a catheter is inserted into the human artery through puncture. The catheter is then pushed to the desired position for contrast agent injection. Afterward, a soft guidewire is passed through the catheter to the lesion area. Finally, a shockwave balloon is moved along the guidewire to the lesion area for treatment. However, existing catheters suffer from channel interference during contrast agent injection and shockwave balloon delivery. To address this, we propose a catheter for vascular treatment. Utility Model Content

[0004] To overcome the shortcomings of existing catheters, this application provides a catheter for vascular treatment that can solve the problem of channel interference in the aforementioned catheters.

[0005] The technical solution adopted by the embodiments of this application to solve its technical problem is: a catheter for vascular treatment, including a catheter body, an elastic band connected to the inner wall of the catheter body, the elastic band dividing the interior of the catheter body into a working chamber and an injection chamber, and a connector assembly connected to one end of the catheter body, the connector assembly communicating with the working chamber and the injection chamber.

[0006] In one specific implementation, the connector assembly includes a connector, wherein a common through hole is formed between the two sidewalls of the connector, the through hole is connected to the working cavity, and a plurality of sealing elements are installed in the through hole, and the elastic band is fixedly connected to the sidewall of the connector.

[0007] In one specific embodiment, the seal includes a fixed tube fixedly installed within the perforation, and a radially expandable elastic tube is fixedly installed on the inner wall of the fixed tube.

[0008] In one specific implementation, the diameters of the two ends of the elastic tube gradually narrow towards the middle.

[0009] In one specific implementation, a pre-set guide wire passes through the perforation and the working cavity, and the elastic tube is wrapped around the pre-set guide wire.

[0010] In one specific implementation, a delivery hole is provided on one side wall of the connector. The delivery hole is L-shaped and communicates with the injection cavity. A connector structure is fixedly installed on the outer wall of the connector, and the connector structure communicates with the delivery hole.

[0011] In one specific implementation, a handle is fixedly connected to the outer wall of the connector.

[0012] In one specific implementation, a radiopaque ring is fixedly fitted onto the leading end of the catheter body.

[0013] The advantages of this embodiment are: by installing an elastic band on the inner wall of the catheter body, the elastic band divides the inside of the catheter body into a working chamber and an injection chamber. The injection chamber is used to inject contrast agent, while a pre-set guidewire can be placed in the working chamber. This prevents channel interference when contrast agent injection and shock wave balloon delivery are performed simultaneously. By installing a connector at one end of the catheter body, a perforation and delivery hole are opened on the side wall of the connector. The perforation is connected to the working chamber, and several sealing elements are installed in the perforation to achieve the purpose of sealing the inside of the perforation, so that the pre-set guidewire and shock wave balloon can pass through the perforation and enter the catheter body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of a vascular therapy catheter provided in an embodiment of this application;

[0015] Figure 2 A schematic cross-sectional view of the catheter body of a vascular therapy catheter provided for an embodiment of this application;

[0016] Figure 3 A schematic cross-sectional view of the connector structure of a vascular therapy catheter provided in an embodiment of this application;

[0017] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle.

[0018] In the diagram: 10-Catheter body; 110-Illuminating ring; 20-Elastic band; 30-Working chamber; 40-Injection chamber; 50-Connector assembly; 510-Connector; 520-Perforation; 530-Seal; 5310-Fixing tube; 5320-Elastic tube; 540-Delivery port; 550-Connector structure; 560-Handle; 60-Preset guidewire. Detailed Implementation

[0019] The technical solution in this application embodiment is to solve the problem of channel interference in the aforementioned catheter. The overall approach is as follows:

[0020] Example:

[0021] Please see Figures 1-4 A catheter for vascular therapy includes a catheter body 10. An elastic band 20 is connected to the inner wall of the catheter body 10, dividing the interior of the catheter body 10 into a working chamber 30 and an injection chamber 40. One end of the catheter body 10 is connected to a connector assembly 50, which communicates with the working chamber 30 and the injection chamber 40. Specifically, the elastic band 20 is deformable and used to divide the interior of the catheter body 10 into the working chamber 30 and the injection chamber 40, thereby avoiding channel interference within the catheter body 10. The injection chamber 40 is used for contrast agent injection. Furthermore, the connector assembly 50 is connected to an existing contrast agent delivery device, through which the contrast agent is delivered to the injection chamber 40. Then, the catheter body 10 is inserted into the human artery through a puncture technique, allowing the advanced end of the catheter body 10 to advance into the cardiovascular system for contrast agent delivery for observation. The working chamber 30 and the injection chamber 40 can be operated simultaneously. The device of this application needs to be sterilized before entering the human body.

[0022] See Figure 3 The connector assembly 50 includes a connector 510. A through hole 520 is provided between the two side walls of the connector 510. The through hole 520 is connected to the working chamber 30. Several seals 530 are installed in the through hole 520. An elastic band 20 is fixedly connected to the side wall of the connector 510. When set up, the seals 530 are used to seal the through hole 520. The through hole 520 is connected to the working chamber 30 to deliver the shock wave balloon into the catheter body 10. The elastic band 20 is fixedly connected to the side wall of the connector 510 to separate the working chamber 30 from the injection chamber 40 to avoid affecting simultaneous operation.

[0023] See Figure 3The sealing element 530 includes a fixed tube 5310 fixedly installed in the perforation 520. A radially expandable elastic tube 5320 is fixedly installed on the inner wall of the fixed tube 5310. It should be noted that in the initial state, the inner walls of the elastic tube 5320 are fitted together, forming a disc shape in cross-section, which is used to block the perforation 520. Further, a preset guide wire 60 passes through the perforation 520 and the working chamber 30. The elastic tube 5320 wraps around the preset guide wire 60, so that the preset guide wire 60 can be inserted into the perforation 520. The preset guide wire 60 can pass through the middle of the elastic tube 5320, and at the same time, the elastic tube 5320 is opened so that the elastic tube 5320 wraps around the preset guide wire 60 to achieve the purpose of sealing. Thus, the preset guide wire 60 is placed in the catheter body 10. When performing puncture, the preset guide wire 60 moves with the catheter body 10 to the inside of the human blood vessel, so that contrast agent injection and shock wave balloon delivery can be performed simultaneously.

[0024] See Figure 3 The diameter of the two ends of the elastic tube 5320 gradually narrows towards the middle. In the specific setting, the openings at both ends of the elastic tube 5320 are relatively large, so that when the preset guide wire 60 and the shock wave balloon are passed through the elastic tube 5320, the preset guide wire 60 and the shock wave balloon are aligned with the middle part of the elastic tube 5320, thus facilitating their passage through the elastic tube 5320.

[0025] See Figure 3 The connector 510 has a delivery hole 540 on one side wall. The delivery hole 540 is L-shaped and communicates with the injection chamber 40. A connector structure 550 is fixedly installed on the outer wall of the connector 510. The connector structure 550 communicates with the delivery hole 540. Specifically, the connector structure 550 is connected to the existing contrast agent delivery structure. The specific structure of the connector structure 550 is the existing technology. The contrast agent is delivered into the delivery hole 540 through the connector structure 550 and enters the human blood vessel through the injection chamber 40.

[0026] See Figure 3 A handle 560 is fixedly connected to the outer wall of the connector 510, and a imaging ring 110 is fixedly sleeved on the forward end of the catheter body 10. When setting it up, the handle 560 is installed on the outer wall of the connector 510 to control the connector 510, and the imaging ring 110 is installed on the forward end of the catheter body 10 to facilitate image observation of the forward end's movement position.

[0027] When this application is used:

[0028] First, the pre-set guidewire 60 is inserted into the catheter body 10. Specifically, one end of the pre-set guidewire 60 is inserted into the perforation 520 of the connector 510, thereby squeezing the middle part of the elastic tube 5320 and opening it, allowing the pre-set guidewire 60 to pass through the elastic tube 5320. Then, the pre-set guidewire 60 passes through the perforation 520 and enters the working chamber 30. The connector structure 550 is then connected to the contrast agent delivery structure. Afterwards, the catheter body 10 is placed in a human artery using a skin puncture technique. Using angiography, the imaging ring 11 at the leading end of the catheter body 10 is observed. Position 0: The catheter body 10 is delivered to the desired blood vessel location, where contrast agent can be injected. The contrast agent enters the delivery port 540 through the connector structure 550, then enters the injection chamber 40 through the delivery port 540, and finally enters the human blood vessel. Afterwards, the pre-set guidewire 60 can be moved to the lesion area. The shockwave balloon is then placed on the pre-set guidewire 60 from the outer end, and the shockwave balloon is pushed through the perforation 520 and the elastic tube 5320, thereby advancing the shockwave balloon along the pre-set guidewire 60 to the lesion area for treatment. After treatment, the balloon can be withdrawn sequentially.

[0029] It should be noted that the specific models and specifications of the catheter body 10, the imaging ring 110, the connector structure 550, and the pre-set guidewire 60 need to be selected and determined according to 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.

[0030] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A catheter for vascular therapy, characterized in that, The catheter includes a catheter body (10), on which an elastic band (20) is connected. The elastic band (20) divides the interior of the catheter body (10) into a working chamber (30) and an injection chamber (40). One end of the catheter body (10) is connected to a connector assembly (50), which communicates with the working chamber (30) and the injection chamber (40).

2. The catheter for vascular therapy as described in claim 1, characterized in that, The connector assembly (50) includes a connector (510), and the two end sidewalls of the connector (510) are provided with the same through hole (520). The through hole (520) is connected to the working cavity (30), and a plurality of sealing elements (530) are installed in the through hole (520). The elastic band (20) is fixedly connected to the sidewall of the connector (510).

3. The catheter for vascular therapy as described in claim 2, characterized in that, The sealing element (530) includes a fixed tube (5310) fixedly installed in the perforation (520), and a radially expandable elastic tube (5320) is fixedly installed on the inner wall of the fixed tube (5310).

4. The catheter for vascular therapy as described in claim 3, characterized in that, The diameters at both ends of the elastic tube (5320) gradually narrow towards the middle.

5. The catheter for vascular therapy as described in claim 3, characterized in that, A pre-set guide wire (60) passes through the perforation (520) and the working cavity (30), and the elastic tube (5320) is wrapped around the pre-set guide wire (60).

6. The catheter for vascular therapy as described in claim 2, characterized in that, A delivery hole (540) is provided on one side wall of the connector (510). The delivery hole (540) is L-shaped and communicates with the injection cavity (40). A connector structure (550) is fixedly installed on the outer wall of the connector (510). The connector structure (550) communicates with the delivery hole (540).

7. The catheter for vascular therapy as described in claim 2, characterized in that, A handle (560) is fixedly connected to the outer wall of the connector (510).

8. The catheter for vascular therapy as described in claim 1, characterized in that, The catheter body (10) is fixedly fitted with a radiopaque ring (110) at its forward end.

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