A bipolar cardiac pacing current supply wire and unit and device

Abstract

Disclosed is a bipolar cardiac pacing current providing wire. The bipolar cardiac pacing current providing wire comprises two conductive cores, an inner insulating film and an outer insulating film, wherein the inner insulating film coats the two conductive cores separately to enable the conductive cores to be insulated mutually; the inner insulating film is coated with the outer insulating film, wherein the conductive cores are made from a magnesium alloy; the magnesium alloy comprises the following components based on mass percentages: 4.5-5.5% of zinc, 0.8-1.2% of manganese, 0.8-1.2% of calcium and the balance of magnesium; and the inner and outer insulating films are prepared from any one or a copolymer of any two kinds of polylactic acid (PLA), polyglycolic acid (PGA), polycaprolactone (PCL), polydioxanone (PDS) and polyhydroxyalkanoate (PHA). The invention also provides a cardiac pacing current providing unit comprising the wire; and the cardiac pacing current providing unit comprises the wire, a suture needle and a connecting electrode connected with a cardiac pacemaker. After the wire is degraded, there is no wire residue in a body, so that metal artifact is not formed, and necessity of taking the wire out through a secondary operation can be avoided for a patient; therefore, multiple burdens of the patient can be relieved mentally, physically and economically; and furthermore, the bipolar cardiac pacing current providing wire, unit and apparatus are quite high in clinical application value.

Description

technical field [0001] The invention relates to the field of cardiac pacing and belongs to the field of medical equipment. Background technique [0002] For patients with transient bradycardia (such as bradycardia after open heart surgery), it is often necessary to surgically implant two temporary cardiac pacing leads into the atrium or ventricle for early postoperative Increase the heart rate and cardiac output, and speed up the postoperative rehabilitation process. Because two wires must pass through the myocardium and chest cavity twice, it brings pain to the patient twice. [0003] At the same time, the existing temporary cardiac pacing leads are all made of non-degradable medical polymer materials and stainless steel guide wires. After the patient's heart rhythm returns to normal, there is no need to continue pacing therapy, but the temporary pacing leads remain permanently in the patient. In the body, it is clearly visible in routine chest X-examinations such as work ...

AI Technical Summary

Problems solved by technology

[0002] For patients with transient bradycardia (such as bradycardia after open heart surgery), it is often necessary to surgically implant two temporary cardiac pacing leads into the atrium or ventricle for early postoperative Increase the heart rate and cardiac output, and speed up the postoperative recovery process. Since there are two wires, they must pass through the myocardium and chest cavity twice, which brings pain to the patient twice.

[0003] At the same time, the existing temporary cardiac pacing leads are all made of non-degradable medical polymer materials and stainless steel guide wires. After the patient's heart rhythm returns to normal, there is no need to continue pacing therapy, but the temporary pacing leads remain permanently in the patient. In the body, it is clearly visible in routine chest X-examinations such as work physical examinations, pre-marital physical examinations, etc., and has a serious impact on the lives of patients

[0004] In addition, the existing temporary cardiac pacing wires need to be fixed in the myocardium by manual knotting, which is not only cumbersome to operate but also causes different degrees of myocardial damage

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