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Auxiliary catheter

A catheter and guiding catheter technology, applied in the medical field, can solve the problems of radial artery intima injury, inaccurate curative effect, increase patient costs, etc., achieve the effect of reducing radial artery complications, avoiding femoral artery puncture, and reducing radial artery injury

Active Publication Date: 2019-06-14
FUWAI HOSPITAL CHINESE ACAD OF MEDICAL SCI & PEKING UNION MEDICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 2. Injection of drugs through the radial artery sheath: including nitroglycerin, verapamil, diltiazem and other antispasmodic drugs, but the curative effect of this method is not exact, drug-related side effects, long waiting time, re-use the guide catheter to go up again spasm
[0011] 3. The method of rotating the guiding catheter upward: the guiding catheter extends the guide wire, and gently rotates left and right to push it. This method has a low success rate and often causes damage to the intima of the radial artery. After surgery, the anterior wall often suffers from severe hematoma, pain, and vagal reflex. Chance of arterial occlusion, and in severe cases, compartment syndrome
[0012] 4. Auxiliary catheter guidance method: The 0.014 guide wire passes through the radial artery, and is sent into the auxiliary catheter along the guide wire to the tip of the guiding catheter, and then forwarded after successive dilation. This method significantly increases the cost of the patient by about 5,000 yuan, and prolongs the exposure time of the intervention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] Female, 75 years old, with coronary heart disease, diabetes, hypertension, underwent coronary angiography through the radial artery, showing that the right coronary artery was severely stenotic by 90%; the J-shaped guide wire was routinely kept to the aortic sinus; the guide catheter 2 was sent along the guide wire 3 to the aortic sinus Near the radial artery, high resistance, severe pain in the patient's forearm, withdrawal of the guiding catheter, pain relief. Diagnosed as radial artery spasm.

[0092] 1. Insert the auxiliary catheter 1 into the guide catheter 2 through the tail end of the guide catheter 2 (Y valve), and the length of the head of the auxiliary catheter 1 beyond the guide catheter 2 is 5 cm;

[0093] 2. Send the assembled guide catheter 2 and auxiliary catheter 1, along with the guide wire 3, forward synchronously, and reach the ascending aorta through the stenotic segment of the radial artery;

[0094] 3. Fix the guide wire 3, withdraw the auxiliary ...

Embodiment 2

[0099] Male, 38 years old, with coronary heart disease, angina pectoris, high blood pressure, and hyperlipidemia; coronary angiography performed through the radial artery showed severe stenosis of 99% in the anterior descending artery; 90% severe stenosis of the middle and distal right coronary artery;

[0100] Coronary interventional therapy was performed three days later, and the guide catheter 2 was sent along the guide wire 3 to encounter obstruction near the radial artery. The patient had severe pain in the forearm, and the guide catheter 2 was withdrawn, and the pain was relieved. Diagnosed as radial artery spasm.

[0101] 1. Insert the auxiliary catheter 1 into the guide catheter 2 through the tail end of the guide catheter 2 (Y valve), and the head end of the auxiliary catheter 1 exceeds the length of the guide catheter 2 by 10 cm;

[0102] 2. Send the assembled guide catheter 2 and auxiliary catheter 1 along with the guide wire 3 forward synchronously, and reach the a...

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Abstract

The present invention relates to an auxiliary catheter comprising a body, and a head end and a tail end respectively located at two ends of the body; the body extends into the inner cavity of a guiding catheter, and the outer side wall of the body and the inner side wall of the guiding catheter are in contact with each other; the head end has a conical structure and protrudes outwardly from a distal end of the guiding catheter; the tail end extends outward from a proximal end of the guiding catheter; the guiding catheter is internally provided with a wire-guide passage for the passage of a guide wire; the outer side wall of the auxiliary catheter is provided with a first opening, and the guide wire can be disengaged from the first opening. The auxiliary catheter of the present invention can assist the guiding catheter to rapidly pass through a stenosis segment, significantly shortens the intervention time; and significantly reduces the radial artery complications.

Description

technical field [0001] The invention relates to the field of medical technology, and relates to a catheter, in particular to an auxiliary catheter used in the treatment or diagnosis of cardiovascular, cerebrovascular, peripheral blood vessels, digestive tract, respiratory tract, urinary tract, and reproductive tract, especially through the radial artery and ulnar artery. , brachial and femoral routes for diagnostic or therapeutic procedures. Background technique [0002] In vivo, especially the lumens of cardiovascular, cerebrovascular, peripheral blood vessels, respiratory tract, digestive tract, reproductive tract, etc. in the human body, there are often local stenosis, which makes it difficult for catheters to pass through. [0003] In recent years, with the deepening of people's understanding of coronary atherosclerotic diseases and the maturity of coronary interventional devices and techniques, percutaneous coronary intervention has become the main treatment method for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/00A61M25/00A61M25/09
CPCA61B17/00A61M25/00A61M25/01A61M25/09
Inventor 唐熠达叶绍东田间其他发明人请求不公开姓名
Owner FUWAI HOSPITAL CHINESE ACAD OF MEDICAL SCI & PEKING UNION MEDICAL COLLEGE
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