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Suction catheter

A technology for suction catheters and catheters, which is applied in the fields of suction equipment, medical science, surgery, etc. It can solve the problems of catheter negative pressure loss, thrombus difficult to enter the catheter, and large thrombus size, so as to reduce negative pressure loss, improve the scope of application, The effect of increasing the lumen diameter

Active Publication Date: 2021-04-06
THE FIRST AFFILIATED HOSPITAL OF ARMY MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the size of the catheter is not equal to the size of the blood vessel or the difference is large, the catheter is easy to suck blood from the gap, resulting in the loss of negative pressure in the catheter and increasing the difficulty of sucking thrombus
At the same time, the size of the thrombus is too large, and it is difficult for the thrombus to enter the catheter

Method used

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Embodiment Construction

[0029] Embodiments of the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, so they are only examples, and should not be used to limit the protection scope of the present invention.

[0030] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application shall have the usual meanings understood by those skilled in the art to which the present invention belongs.

[0031] In the description of this application, it is to be understood that the terms "longitudinal", "transverse", "length", "upper", "lower", "top", "bottom", "inner", "outer", "axis The orientation or positional relationship indicated by "to", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience ...

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Abstract

The invention relates to the technical field of thrombus aspiration, and provides a suction catheter. The suction catheter comprises a catheter body and a supporting frame. The one end of the catheter is provided with an elastic pipe section, and the other end of the catheter is provided with a main pipe joint and a first joint, the support frame comprises a first traction guide wire and an elastic frame; the elastic frame is arranged in the catheter body in a sliding mode after being compressed, and the elastic frame can provide elastic force to enlarge the diameter of the elastic pipe section; one end of the first traction guide wire is connected with the elastic frame, and the other end extends out of the main pipe joint; and the elastic frame can slide by pushing the first traction guide wire. When the suction catheter is used, the diameter of the elastic tube section is increased through the elastic frame, the outer wall of the elastic tube section and the inner wall of a blood vessel are attached to the diameter of an inner cavity of the elastic tube section under the constraint of the inner wall of the blood vessel, and the diameter of the inner cavity of the elastic tube section is increased at the same time. Therefore, the suction catheter can aspirate thrombus from blood vessels of different sizes.

Description

technical field [0001] The invention relates to the technical field of thrombus suction, in particular to a suction catheter. Background technique [0002] A thrombus is a small piece of blood that forms on the surface of a vessel in the cardiovascular system where the lining has been peeled off or repaired. It exists in the form of insoluble small pieces. Although the volume is very small, excessive thrombus will cause harm to the human body and easily cause cardiovascular and cerebrovascular diseases. The most common ones are cerebral thrombosis and cardiovascular obstruction. more dangerous diseases. [0003] The common clinical method to deal with thrombus is to dissolve the thrombus through autolysis and thrombolytic drugs. However, autolysis and thrombolytic drugs usually require a long treatment cycle, and cannot effectively treat some acute and severe thrombosis symptoms. [0004] With the development of technology, thrombectomy methods through guide wire traction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/22A61M1/00
CPCA61B17/22A61B2017/22045
Inventor 陈林周振华
Owner THE FIRST AFFILIATED HOSPITAL OF ARMY MEDICAL UNIV
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