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Catheter for endovascular treatment on hypertension

A high blood pressure and blood vessel technology, applied in physical therapy, medical science, artificial respiration, etc., can solve the problems of high complications and high morbidity, and achieve the effect of lowering blood pressure and treating high blood pressure

Inactive Publication Date: 2011-07-20
湖南依微迪医疗器械有限公司
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  • Application Information

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Problems solved by technology

However, such extensive splanchnic denervation results in high perioperative morbidity and high rates of other visceral dysfunction following extensive splanchnic denervation (12, 13)

Method used

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  • Catheter for endovascular treatment on hypertension
  • Catheter for endovascular treatment on hypertension
  • Catheter for endovascular treatment on hypertension

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Experimental program
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Embodiment Construction

[0067] specific implementation plan

[0068] Experiments in animals: After the hemostatic catheter was inserted through the femoral artery, an 8F guiding catheter was sent through the hemostatic catheter. X-ray DSA observation confirmed that the front end of the guiding catheter reached the renal artery, and then, intravascular treatment of hypertension The catheter is fed through the 8F guiding catheter, and under X-ray DSA observation, pay attention to the terminal electrode reaching the appropriate part of the renal artery. Connect the connector to the radio frequency instrument, manipulate the pull button, make the electrode at the end of the catheter adhere to the inner wall of the renal artery, measure the impedance of the inner wall of the renal artery, adjust the set impedance to 100 ohms, the voltage is 80 volts, and the power is 30 watts for 50 seconds; Arterial temperature and impedance. The renal artery was ablated clockwise at 12 o'clock, 3 o'clock, 6 o'clock, an...

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Abstract

The invention relates to a catheter for endovascular treatment on hypertension, in particular to a medical catheter for clinical endovascular intervention treatment on hypertension. The catheter has the functions of monitoring the temperature of the vascular tissue of the renal artery and measuring the local impedance of the tissue of the renal artery, and is used for carrying out feedback regulation on radio and high frequency current intensity to block bilateral renal sympathetic nerves and interdict sympathetic nerves to excite the kidney to generate and secrete renin-angiotensin, thereby achieving the purpose of reducing blood pressure. The catheter provided by the invention is made by compositing temperature plastic polymers and wire meshes, wherein the hardness of a near end is larger, a far end is softer, and multiple channels are formed in a catheter body; a far-end electrode is made from platinum (or gold) composite materials at the front end of the catheter, and multiple leads and drawing wires of the electrode are connected with a handle and a joint through the channels in the catheter body; and high-efficiency electrical isolation pipes and drawing pipes arranged in the channels of the catheter body ensure electrical signal transmission and smooth traction, thereby finishing bending and stretching operations.

Description

Technical field: [0001] The present invention introduces a catheter for clinical treatment of hypertension, which is used to block bilateral renal sympathetic nerves, block the effect of sympathetic nerves on stimulating the kidneys to produce and secrete renin-angiotensin, and reduce blood pressure. The catheter also has the functions of monitoring the temperature of the renal artery blood vessel tissue and measuring the local impedance of the renal artery tissue, which is used to feedback and adjust the radiofrequency current intensity, so it is a special medical catheter for the treatment of hypertension. Background technique: [0002] Hypertension is a common disease that seriously affects people's quality of life and is life-threatening. It is also the leading cause of death worldwide, with 7 million people dying of hypertension each year worldwide (1). On October 12, 2004, the "Investigation Report on the Nutrition and Health Status of Chinese Residents" released at th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N1/36A61B5/01A61B5/053
Inventor 曾延华彭文涛方唯一周怀其
Owner 湖南依微迪医疗器械有限公司
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