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CN-121102717-B - Telescopic type cardiac pacing electrode

CN121102717BCN 121102717 BCN121102717 BCN 121102717BCN-121102717-B

Abstract

The invention relates to the technical field of heart pacing electrodes, in particular to a telescopic heart pacing electrode which comprises a pulse pacemaker and an electrode lead, wherein the electrode lead comprises an insertion end, a connecting sleeve, a conductive core wire and an electrode end, the insertion end, the connecting sleeve and the electrode end are sequentially and fixedly connected, the insertion end is in plug-in fit with the pulse pacemaker, the conductive core wire is arranged in the connecting sleeve, the two ends of the conductive core wire are respectively connected with the insertion end and the electrode end, and a pulse electric signal is transmitted to the inside of an organ through the electrode end by the pulse pacemaker.

Inventors

  • ZHANG XIAO
  • SHEN QIN
  • JIN JING

Assignees

  • 中国人民解放军联勤保障部队第九〇四医院

Dates

Publication Date
20260512
Application Date
20250924

Claims (8)

  1. 1. The telescopic cardiac pacing electrode is characterized by comprising a pulse pacemaker (1) and an electrode lead (2), wherein the electrode lead (2) comprises an insertion end (21), a connecting sleeve (22), a conductive core wire (23) and an electrode end (24), the insertion end (21), the connecting sleeve (22) and the electrode end (24) are sequentially and fixedly connected, the insertion end (21) is in plug-in fit with the pulse pacemaker (1), the connecting sleeve (22) drives the electrode end (24) to be inserted into a biological organ, the connecting sleeve (22) is of a flexible hollow structure, the conductive core wire (23) is arranged in the connecting sleeve (22), two ends of the conductive core wire (23) are respectively connected with the insertion end (21) and the electrode end (24), and a pulse electric signal generated by the pulse pacemaker (1) is transmitted into the organ through the electrode end (24); The connecting sleeve (22) comprises a subcutaneous section and an intravenous section, the subcutaneous section is of a flexible telescopic structure, the subcutaneous section is embedded in the skin and can adapt to the growth of a body, the intravenous section is of a flexible non-telescopic structure, the intravenous section penetrates through a vein to extend into a biological organ, and a conductive core wire (23) positioned in the subcutaneous section is of a telescopic structure; the subcutaneous segment comprises connecting ends (221), telescopic pieces (222) and fixing pieces (223), wherein the number of the connecting ends (221) is two, the telescopic pieces (222) and the fixing pieces (223) are uniformly arranged between the two connecting ends (221), the telescopic pieces (222) and the fixing pieces (223) are arranged in a staggered mode, and the telescopic pieces (222) can be bent in a telescopic mode; an annular groove is formed in the outer side face of the fixing piece (223), and arc-shaped protrusions are uniformly arranged on the annular groove; A porous coating is arranged on a gap between two adjacent arc-shaped bulges on the outer side surface of the fixing piece (223), and the porous coating is one of a sintered titanium bead layer, a porous titanium coating or open pore silica gel.
  2. 2. The retractable cardiac pacing electrode of claim 1, wherein the telescoping member (222) is of a cylindrical hollow structure, sealing protrusions (220) are fixedly mounted at two ends of the telescoping member (222), and the sealing protrusions (220) are of a conical structure.
  3. 3. A retractable cardiac pacing electrode as claimed in claim 2, wherein said telescoping member (222) has a smooth outer surface, and wherein the outer surface of the telescoping member (222) is coated with an anti-cell adhesion layer.
  4. 4. A retractable cardiac pacing electrode as claimed in claim 3, wherein the telescoping member (222) is corrugated, and wherein the inner and outer sides of the telescoping member (222) are each provided with a resiliently contractible protective layer.
  5. 5. The retractable cardiac pacing electrode of claim 4, wherein said anchor (223) is of a circular configuration, said anchor (223) is a rigid biocompatible core, and said anchor (223) is configured to lock and fix two adjacent retractors (222).
  6. 6. The telescopic cardiac pacing electrode of claim 5, wherein the two ends of the fixing member (223) are provided with annular grooves, the inner walls of the annular grooves are provided with arc grooves, locking frames (2231) are fixedly arranged in the arc grooves, and locking protrusions (2221) which are in one-to-one correspondence with the locking frames (2231) are fixedly arranged at the end parts of the telescopic members (222).
  7. 7. The retractable cardiac pacing electrode of claim 6, wherein the locking frame (2231) is of an arc structure, a mounting hole (2232) is formed in one end of the locking frame (2231), an arc opening (2233) is formed in the other end of the locking frame (2231), a sliding groove (2234) is formed in the middle of the locking frame (2231), the thickness of the inner side of the locking frame (2231) is gradually increased along the clockwise direction, and a positioning groove (2235) is formed in one side, close to the mounting hole, of the inner side of the locking frame (2231).
  8. 8. The retractable cardiac pacing electrode of claim 7, wherein the locking protrusion (2221) is in a T-shaped structure, the locking protrusion (2221) comprises a connecting rod (2222) and a lock catch (2223), the connecting rod (2222) is fixedly installed at the end of the sealing protrusion (220), the lock catch (2223) is installed at the end of the connecting rod (2222), the diameter of the lock catch (2223) is smaller than that of the arc-shaped opening (2233), the diameter of the lock catch (2223) is larger than that of the sliding groove (2234), the connecting rod (2222) can slide along the sliding groove (2234), the lock catch (2223) is fixedly provided with a positioning protrusion (2224), the surface of the positioning protrusion (2224) is a rough grinding surface, and the positioning protrusion (2224) is in clamping fit with the positioning groove (2235).

Description

Telescopic type cardiac pacing electrode Technical Field The application relates to the technical field of cardiac pacing electrodes, in particular to a telescopic cardiac pacing electrode. Background Pacemakers generally refer to an electronic therapeutic device that may be implanted in a living being. The basic structure of the pacemaker comprises a battery, a pulser and an electrode wire, wherein a traditional cardiac pacing electrode is implanted into a heart chamber through a vein, the tail end of the traditional cardiac pacing electrode is fixed on an endocardium through an active spiral or a passive barb, and a wire is connected to the pulser in a subclavian pocket through a subcutaneous tunnel. The pulse device is used for sending out pulse current which is conducted through electrode wires implanted into human tissues such as heart, blood vessels and the like and stimulates diseased organs, so that the purpose of treating certain dysfunction of diseased organs such as heart caused by abnormal beating is achieved, most of current electrodes are long and need to be wound on a pacemaker pulse emitter, and the risks of infection, leakage, bulge, bleeding and the like are increased. In the prior art, publication number CN103083808a provides a pacemaker electrode wire and a pacemaker, specifically, the provided pacemaker electrode wire is made of a composite material of a carbon nano tube wire and a conductive wire core, and because the carbon nano tube wire has good toughness and mechanical strength, the electrode wire made of the composite material can still keep good flexibility and mechanical strength under a smaller diameter, thereby improving the service life of the electrode wire and further improving the service life of the pacemaker using the pacemaker. The prior art is characterized in that the electrode lead of the existing pacemaker is designed to be rigid or fixed in length, the subcutaneous section of the electrode lead cannot be stretched and contracted when the prior art is used, the electrode lead cannot adapt to the growth and development of a patient, the phenomenon that the electrode lead is easy to tighten, break or electrode shift is caused, the risk of secondary operation is increased, the prior art has a telescopic function, the outer side of the electrode lead is completely wrapped and fixed by subcutaneous tissue, when the patient grows and develops, the outer side of the electrode lead is easy to be pulled and concentrated in stress, and the phenomenon that the electrode lead is repeatedly bent and broken in fatigue exists. Disclosure of Invention In order to solve the problems in the background art, the invention provides a telescopic cardiac pacing electrode. The application provides a telescopic heart pacing electrode, which adopts the following technical scheme: The telescopic cardiac pacing electrode comprises a pulse pacemaker and an electrode lead, wherein the electrode lead comprises an insertion end, a connecting sleeve, a conductive core wire and an electrode end, the insertion end, the connecting sleeve and the electrode end are sequentially and fixedly connected, the insertion end is in plug-in fit with the pulse pacemaker, the connecting sleeve drives the electrode end to be inserted into a biological organ, the connecting sleeve is of a flexible hollow structure, the conductive core wire is arranged in the connecting sleeve, two ends of the conductive core wire are respectively connected with the insertion end and the electrode end, and a pulse electric signal generated by the pulse pacemaker is transmitted into the organ through the electrode end. The connecting sleeve comprises a subcutaneous section and an intravenous section, wherein the subcutaneous section is of a flexible telescopic structure, the subcutaneous section is embedded in the skin and can adapt to the growth of a body, the intravenous section is of a flexible non-telescopic structure, the intravenous section penetrates through a vein to extend into a biological organ, and a conductive core wire positioned in the subcutaneous section is of a telescopic structure. The subcutaneous segment comprises connecting ends, telescopic parts and fixing parts, wherein the number of the connecting ends is two, the telescopic parts and the fixing parts are uniformly arranged between the two connecting ends, the telescopic parts and the fixing parts are arranged in a staggered mode, and the telescopic parts can be bent in a telescopic mode. Further, the telescopic piece is cylindrical hollow structure, and sealing bulges are fixedly arranged at two ends of the telescopic piece, and are conical structures. Further, the outer surface of the telescopic piece is smooth, and an anti-cell adhesion layer is coated on the outer surface of the telescopic piece. Further, the telescopic piece is of a corrugated structure, and elastically contractible protective layers are uniformly distributed on the inner side surface and