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Interventional ultrasonic thrombolysis device

An interventional, ultrasonic technology, applied in medical science, surgery, etc., can solve problems such as high difficulty, high risk, and damage to blood vessels.

Active Publication Date: 2021-05-18
BEIJING HEQINGHECHUANG MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For old thrombus, because of its hard texture and firm adhesion to the blood vessel wall, if the catheter is inserted into the thrombus for thrombolysis, it is very easy to damage the blood vessel, which is dangerous and difficult to operate

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0036] First, the guide wire is inserted through the blood vessel to reach the thrombus site, and the body of the ultrasonic thrombolytic catheter is inserted. Then, the contrast agent is passed through the catheter lumen to observe the position of the thrombus. The catheter is inserted to the head of the old thrombus, the guide wire is pulled out, and the syringe is injected manually. , the therapeutic drug is injected into the thrombus position along the lumen. Since there are several first micropores (50 microns in diameter) on the side of the distal end of the catheter and several second micropores (50 microns in diameter) on the side of the insulating shell, the therapeutic drug is uniformly released from the thrombus. Outflow from the first micropore and the second micropore. Finally, turn on the switch of the ultrasonic generator, and the ultrasonic transducer at the distal end of the catheter emits ultrasonic waves. Using the ultrasonic transducer polarized in the thick...

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Abstract

The invention provides an interventional ultrasonic thrombolysis device. The interventional ultrasonic thrombolysis device comprises a catheter body, an ultrasonic transducer and an insulating shell, wherein the catheter body comprises an outer tube and an inner tube, and the outer tube is arranged on the outer side of the inner tube in a sleeving mode; the ultrasonic transducer is arranged at the end of the catheter body in a sleeving mode, and is suitable for generating ultrasonic waves in the radial direction of the catheter body; and the insulating shell seals a shell of the ultrasonic transducer. According to the device, the ultrasonic transducer polarized in the thickness direction is used for applying ultrasound to the end of the thrombus, the ultrasound generates a cavitation effect to tear the thrombus, ultrasonic energy promotes permeation of a thrombolysis drug to the thrombus, the action area of the thrombolysis drug is increased, thrombolysis is accelerated, and the thrombus is dissolved from head to tail; and with adoption of non-plug-in mode for thrombolysis, the device has small damage to blood vessels and is especially suitable for old thrombus.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular, the invention relates to an interventional ultrasonic thrombolysis device. Background technique [0002] Thrombosis is one of the common diseases in clinical practice. It can be generally divided into acute fresh thrombus and old thrombus. The old thrombus is hard in texture and firmly adheres to the vessel wall. Most patients with smaller old thrombus within 2-4 weeks can completely absorb themselves , and for large old thrombi, it is generally difficult to absorb by itself, and some patients can only be polarized and recanalized, but cannot be completely absorbed. [0003] Studies have shown that applying ultrasound on the basis of transcatheter thrombolysis (CDT) can enhance the thrombolytic effect of drugs, and ultrasound can induce cavitation effects, generate shear force and micro-jet energy, and tear thrombus, increasing Reduce the contact area between the drug and the thro...

Claims

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Application Information

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IPC IPC(8): A61B17/22
CPCA61B17/22004A61B2017/22005A61B2017/22027A61B2017/22084A61B2017/22038
Inventor 陈皓生潘云帆李永健
Owner BEIJING HEQINGHECHUANG MEDICAL TECH CO LTD
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