A lower extremity arterial occlusion segment sharp breakthrough positioning catheter

Abstract

The application discloses a lower limb arterial occlusion segment sharp breakthrough positioning catheter, which comprises a catheter, one end of the catheter is in sealed connection with one end of a joint, the other end of the joint is provided with a guide wire inlet, pressure applying ports A and B are arranged along the longitudinal direction respectively, balloon pressure cavities are arranged on the upper and lower surfaces of the catheter respectively, the balloon pressure cavities are communicated with balloons A and B respectively, and the pressure applying ports A and B are communicated with the balloon pressure cavities; when the sharp breakthrough is performed on the occluded blood vessel segment, the breakthrough point is located at the center of the fiber cap, the sizes of the balloons A and B are controlled by increasing or decreasing the pressure respectively, then the balloons A and B press the guide wire cavity, the angle of the guide wire located in the guide wire cavity is changed, the breakthrough position can be better aligned, after the breakthrough, the front end of a wedge-shaped catheter is applied to perform the breakthrough, the blood flow is smoothly opened after the catheter is introduced, the blood flow opening is more in line with the operation principle, the blood vessel injury caused by the sharp breakthrough is reduced, the operation difficulty is reduced, and the operation success rate is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of sharp breakthrough positioning catheter of lower limb arterial occlusion section, it relates to medical intervention field. BACKGROUND

[0002] In the treatment of lower limb arteriosclerosis obliterans, the breakthrough of occluded vessel segment fibrous cap is the key to lower limb arterial occlusion vessel opening, and the commonly used method is mainly direct breakthrough, reverse opening, sharp breakthrough etc.;Direct breakthrough is only suitable for non-hard fibrous cap. Reverse opening can open almost all occluded vessels, but it has high technical difficulty, long learning period, and no operation space when distal outflow tract is not good. Sharp breakthrough is also a common breakthrough method, but due to the difficulty in adjusting the breakthrough direction, it is easy to damage the blood vessel, resulting in surgical failure. SUMMARY

[0003] The present application provides a kind of sharp breakthrough positioning catheter of lower limb arterial occlusion section to overcome the defects of conventional sharp breakthrough method in prior art due to the difficulty in adjusting the breakthrough direction, which can cause damage to blood vessels and lead to surgical failure.

[0004] To solve the above technical problems, the present application provides the following technical solutions:

[0005] The present application discloses a kind of sharp breakthrough positioning catheter of lower limb arterial occlusion section, including catheter, one end of the catheter is sealedly connected with one end of connector;The other end of the connector is provided with guide wire inlet, and pressure applying port A and pressure applying port B are arranged along the longitudinal direction respectively;Balloon pressure cavity is opened on the inner wall of the catheter, and two balloon pressure cavities are communicated with balloon A and balloon B respectively, and the pressure applying port A and the pressure applying port B are communicated with balloon pressure cavity.

[0006] Further, the other end of the catheter is provided with wedge head for facilitating sharp breakthrough.

[0007] Further, the pressure applying port A and the pressure applying port B are connected with pressure applying device.

[0008] Further, the catheter is further provided with guide wire cavity for passing through guide wire between two balloon pressure cavities, and the guide wire cavity is communicated with guide wire inlet.

[0009] Further, the balloon A and the balloon B are oppositely arranged.

[0010] Further, the hardness of the front end of the guide wire is greater than that of the rear part, so that the sharp breakthrough is more smooth.

[0011] The beneficial effects achieved by this invention are as follows: When performing a sharp breakthrough in an occluded vascular segment, the breakthrough point is located in the center of the fibrous cap. By increasing or decreasing the pressure, the size of balloons A and B is controlled, thereby compressing the guidewire lumen and changing the angle of the guidewire inside. This allows for better alignment with the breakthrough point. By adjusting balloons A and B, the catheter between them is aligned with the longitudinal axis of the distal vessel. After breakthrough, a wedge-shaped catheter tip is used for the breakthrough. After the catheter is inserted, the vessel is successfully opened, and blood flow opening is more in line with surgical principles. This reduces vascular damage caused by sharp breakthrough, lowers the difficulty of the surgery, and improves the success rate of the surgery. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 This is the present invention. Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 This is a partially enlarged schematic diagram of the guidewire of the present invention.

[0016] In the diagram: 1. Catheter; 011. Guidewire lumen; 012. Balloon compression lumen; 013. Balloon A; 014. Balloon B; 015. Wedge head; 2. Connector; 021. Guidewire inlet; 022. Compression port A; 023. Compression port B; 3. Guidewire. Detailed Implementation

[0017] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0018] Example 1

[0019] like Figures 1-3 As shown, a sharp breakthrough localization catheter for lower extremity arterial occlusion includes a catheter 1, one end of which is sealed to one end of a connector 2; the other end of the connector 2 has a guidewire inlet 021, and longitudinally arranged pressure-applying ports A022 and B023; a balloon pressure-applying chamber 012 is formed on the inner wall of the catheter 1, and two balloon pressure-applying chambers 012 are respectively connected to balloon A013 and balloon B014, and both pressure-applying ports A022 and B023 are connected to the balloon pressure-applying chambers 012.

[0020] The two balloon pressure cavities 012 in the catheter 1 are also provided with a guide wire cavity 011 for passing the guide wire 3, which communicates with a guide wire inlet 021.

[0021] The other end of the catheter 1 is provided with a wedge-shaped head 015 for facilitating sharp breakthrough.

[0022] The pressurizing ports A 022 and B 023 are connected with a pressurizing device.

[0023] The hardness of the front end of the guide wire 3 is greater than that of the rear part, so that the sharp breakthrough is more smooth.

[0024] The balloon A 013 and the balloon B 014 are oppositely arranged in a staggered manner.

[0025] During the operation, the catheter 1 is aligned with the occlusion of the blood vessel, and the pressurizing ports A 022 and B 023 are respectively subjected to pressure by the pressurizing device, and the sizes of the balloon A 013 and the balloon B 014 are respectively controlled by the increase and decrease of the pressure, so that the guide wire cavity 011 is pressed by the balloon A 013 and the balloon B 014, the angle of the guide wire 3 inside the guide wire cavity 011 is changed, the breakthrough position can be better aligned, the blood vessel is prevented from being damaged, and the catheter 1 between the balloon A 013 and the balloon B 014 is adjusted to be consistent with the longitudinal axis of the distal blood vessel.

[0026] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, and for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A lower extremity arterial occluded segment sharp breakthrough localization catheter, characterized by, The catheter is connected with one end of the connector; The other end of the connector is provided with a guide wire inlet, and a pressure applying port A and a pressure applying port B are arranged along the longitudinal direction respectively; The inner wall of the catheter is provided with balloon pressure cavities, and the two balloon pressure cavities are communicated with balloon A and balloon B respectively, and the pressure applying port A and the pressure applying port B are communicated with the balloon pressure cavities; The balloon A and the balloon B are arranged in a staggered manner in opposite directions; The size of the balloon A and the balloon B is controlled by pressure to compress the guide wire cavity to adjust the angle of the guide wire, so that the breakthrough point is located in the center of the fiber cap.

2. The below-knee abrupt breakthrough localization catheter of claim 1, wherein, The other end of the catheter is provided with a wedge-shaped head for facilitating sharp breakthrough.

3. The below-knee abrupt breakthrough localization catheter of claim 1, wherein, The pressure applying port A and the pressure applying port B are connected with a pressure applying device.

4. The below-knee abrupt breakthrough localization catheter of claim 1, wherein, The guide wire cavity for passing through the guide wire is arranged between the two balloon pressure cavities in the catheter, and the guide wire cavity is communicated with the guide wire inlet.

5. The below-knee abrupt occlusion site localization catheter of claim 4, wherein, The hardness of the front end of the guide wire is greater than that of the rear part, so that the sharp breakthrough is more smooth.

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