CN2078178U

CN2078178U - Guide-pipe electrode of caridio-activator

Info

Publication number: CN2078178U
Application number: CN 90226041
Authority: CN
Inventors: 王国光
Original assignee: QINMING MEDICAL INSTRUMENT CO Ltd
Current assignee: QINMING MEDICAL INSTRUMENT CO Ltd
Priority date: 1990-12-13
Filing date: 1990-12-13
Publication date: 1991-06-05

Abstract

The utility model discloses a guide-pipe electrode of cardiac pacer, belonging to the fabrication field for the cardiac pacer. On the basis of the existing guide-pipe electrode, via the new concept, the guide-pipe electrode of cardiac pacer is designed. A: a straight handle plug is changed into a bent handle plug so that the bent handle plug is implanted in the human body, which is more comfortable than the straight handle plug; B: the conductor wire of the guide-pipe adopts four fine steel wires which are wound into reed wires and are arranged in a rubber pipe; therefore, the guide-pipe electrode of cardiac pacer has the features of soft conductor wires, small resistance of the DC resistor, and moderate stress on the local myocardium around the electrode; C: the stern of the electrode is changed from a column shape to a wing shape; the electrode has the advantages of easy fixation and good firmness; D: the electrode head of the electrode is designed into a microporous shape or a net cover shape; the electrode has the advantages of big sensing area and favorable sensing effect.

Description

Guide-pipe electrode of caridio-activator

This utility model belongs to the cardiac pacemaker support device and makes the field.This cardiac pacemaker catheter electrode and the supporting use of cardiac pacemaker.It is that the electric pulse that cardiac pacemaker is sent transfers to a certain specific part of heart and stimulates it, and simultaneously, it feeds back to cardiac pacemaker with the electrocardiosignal that its electrode tip perceived again.

Prior art in this utility model prior art field is: 1, the plug of existing cardiac pacemaker catheter electrode is the staight shank plug, its weak point be adorn uncomfortable in vivo, and the conduit easy fracture of knee in vivo; 2, existing cardiac pacing conduit adopt two thicker wires of diameter and around, its weak point is that lead seems too hard (under the active force of 500gf, the specific elongation rate is 5%), and the D.C. resistance resistance is big, and the local myocardial wall is stressed excessive on every side very easily to cause electrode; 3, existing electrode is a columnar electrode, and weak point is: the one, be difficult for the location, and the 2nd, the perception area is little, perception electrocardiosignal scarce capacity.

Purpose of design of the present utility model is: avoid weak point of the prior art, it is comfortable to design a kind of body internal ratio staight shank plug of packing into, is easy to the location, the cardiac pacemaker catheter electrode that the D.C. resistance resistance is little and the perception area is big.

Design of the present utility model is: 1, design philosophy: the cardiac pacemaker catheter electrode is the middle important step that human heart and pacemaker interrelate, electrode does to stimulate and perception is used, lead with not only contact for a long time in electrode is contained in human body with body fluid, also to adapt to beating and the caused motion in other position of heart, therefore, conduit must have good electrical properties, reliable mechanical strength and blood compatibility.Along with the clinical use of pacemaker multi-functional, that the life-span is long is more and more general, more and more higher to the requirement of conduit, we do not wish to change conduit when changing pacemaker yet, and hope can have " all the life " to use conduit to produce.The designed conduit of this utility model is to adopt four finer wire lines and coiled spring line, also be provided with silicone rubber insulation layer outside it, therefore having one is that the lead softness of conduit is (under the active force of 500gf, the specific elongation rate is 24%) the partial wall myocardial wall is stressed moderate on every side for electrode, the 2nd, it is little to have long characteristics of life-span and D.C. resistance resistance, wing and relative two angle that the fixed position of electrode tip is shaped on four wings are 70 °--95 °, therefore fixing easily, firm performance is good.Electrode tip system micropore shape or that the guard shape is arranged or the processing of employing platinum, so can reach 20mm ²Above perception area, perceived effect is good, because the perception area increases, perception electrocardiosignal that just may to the greatest extent can be big, and supression pacemaker boost pulse.But and extended immobilization, good stability.2, organization plan: an end of the plug 1 of the catheter electrode of cardiac pacemaker is connected with an end of lead 2, and the other end of lead 2 is connected with electrode 3.Plug 1 is curved petioliform; Lead 2 is that its spring line is positioned at silicone rubber tube by four wires and coiled spring line; The electrode tip of electrode 3 is micropore shape 4 or is guard shape (6,7,8), and is 70 ° at silicone rubber wing 5 and relative two angle that the afterbody of the electrode tip of electrode 3 is shaped on four wings--and 95 °.Guard shape (6,7,8) electrode tip is to be made of tinsel guard 6, tinsel 7 and pole plate 8, and pole plate 8 is positioned at the cephalic par of electrode 3, and wire cage 6 is connected with pole plate 8, and tinsel 7 is filled in the wire cage 6.

This utility model compared with prior art, the one, adopt in the curved handle plug implant into body comfortable than the staight shank plug, the 2nd, adopt the spring line of four steel wire doubling coileds to insert to have its conduit inside conductor softness in the silicon rubber hose, the local myocardial wall is stressed moderate around the electric bent utmost point, the 3rd, adopt the electrode of wing wing to have to be easy to fix, characteristics that steadiness is good, the 4th, it is big that the electrode cartridge adopts micropore shape or guard shape to have a perception area, the advantage that perceived effect is good, and has extended immobilization, the characteristics that stability is high.

Description of drawings:

Fig. 1 is the structural representation of the catheter electrode of cardiac pacemaker.

Fig. 2 is the structural representation of electrode of the catheter electrode of cardiac pacemaker.

Fig. 3 is the structural representation of second kind of electrode tip of electrode of cardiac pacemaker.

Fig. 4 is the local structure for amplifying sketch map of I of the electrode of cardiac pacemaker.

Embodiment:

Fig. 1 and Fig. 2 are a kind of embodiment of cardiac pacemaker catheter electrode.

Implement: at first four wires and around spring on put the medical grade silicon rubber flexible pipe, and the two ends of spring linked to each other with the tail end of the electrode tip of the tail end of the metallic plug of curved handle plug 1 and electrode 3 respectively, two terminations with the cardiac pacemaker catheter electrode form through sulfuration then.

Claims

1, an a kind of end of plug 1 of catheter electrode of cardiac pacemaker is connected with an end of lead 2, and the other end of lead 2 is connected with electrode 3, of the present utility model being characterised in that:

A, described plug 1 are curved petioliform;

B, described cardiac pacemaker wire 2 are that its spring line is positioned at silicone rubber tube by four wires and coiled spring line;

The electrode tip of c, described electrode 3 is micropore shape 4 or is guard shape (6,7,8), and is 70 ° at silicone rubber wing 5 and relative two angle that the afterbody of the electrode tip of electrode 3 is shaped on four wings--and 95 °.

2, the catheter electrode of cardiac pacemaker according to claim 1, it is characterized in that: guard shape (6,7,8) electrode tip is to be made of tinsel guard 6, tinsel 7 and pole plate 8, pole plate 8 is positioned at the cephalic par of electrode 3, wire cage 6 is connected with pole plate 8, and tinsel 7 is filled in the tinsel guard 6.