In vitro rechargeable implantable medical instrument

A medical instrument and rechargeable technology, which is applied in the field of rechargeable implanted medical instruments outside the body, can solve problems such as battery temperature rise, battery life impact, and adverse effects on the human body, and achieve the effect of reducing excessive heat generation

Active Publication Date: 2017-11-17
BEIJING PINS MEDICAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Excessive heat generation of implanted parts will have adverse effects on the human body
Especially when the battery temperature rises, it may affect the life of the battery

Method used

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  • In vitro rechargeable implantable medical instrument
  • In vitro rechargeable implantable medical instrument
  • In vitro rechargeable implantable medical instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The pulse generator 120 structure of described embodiment 1 is as follows image 3 As shown, its structure is basically the same as that of the pulse generator 120 of the comparative example, the difference is that a heat conducting shielding layer 127 is added. The thermal shielding layer 127 is a graphite sheet with a thickness of 25 microns and self-adhesive. The heat-conducting shielding layer 127 has the same shape as the rechargeable battery 125 and is attached to the surface of the rechargeable battery 125 .

Embodiment 2

[0049] The pulse generator 120 structure of described embodiment 2 is as follows Figure 4 As shown, its structure is basically the same as that of the pulse generator 120 of the comparative example, the difference is that a heat conducting shielding layer 127 is added. The thermal shielding layer 127 is a graphite sheet with a thickness of 25 microns and self-adhesive. The heat conducting shielding layer 127 is folded to form a double-layer structure. The second heat-conducting shielding layer 1272 is disposed on the surface of the metal casing of the rechargeable battery 125 , and the first heat-conducting shielding layer 1271 is disposed on the insulating protection layer 128 on the inner surface of the cover 124 . The shape of the first heat-conducting shielding layer 1271 may be the same as that of the in-body charging energy receiving coil 126 . The shape of the second thermal shielding layer 1272 is the same as that of the rechargeable battery 125 . The first heat-co...

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PUM

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Abstract

The present invention relates to an externally charged implantable medical instrument, which comprises: an externally charged device; and an internally implanted device, the internally implanted device comprising: a pulse generator and a stimulating electrode; the pulse generator It includes a casing, a cover used in conjunction with the casing, a rechargeable battery arranged in the casing, and an internal charging energy receiving coil arranged on the periphery of the rechargeable battery; wherein, the pulse generator further includes a A thermally conductive shielding layer arranged between the rechargeable battery and the cover. The extracorporeal rechargeable implantable medical instrument provided by the present invention can electromagnetically shield the rechargeable battery through a thermally conductive shielding layer, thereby avoiding damage to the rechargeable battery during wireless energy transmission from the extracorporeal charging device to the charging energy receiving coil in the body. Eddy currents are generated on the metal casing to generate heat, thereby effectively reducing excessive heat generation of the rechargeable battery.

Description

technical field [0001] The invention relates to an implantable medical instrument, in particular to an externally charged implantable medical instrument. Background technique [0002] There are many types of implantable medical devices, such as cardiac pacemakers and spinal cord stimulators, implantable neurostimulators, etc. Implantable medical devices generally include internal implanted devices and external control devices, which exchange information through two-way wireless communication. [0003] In the existing technology, implantable medical instruments are generally powered by batteries to send out stimulation pulses of a specific frequency for long-term stimulation of specific targets, thereby improving symptoms of patients. However, implantable medical instruments powered by primary batteries are generally more expensive, but mostly have a shorter lifespan. The main factor limiting the life of implantable medical instruments is the capacity of the battery. Most o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N1/372A61N1/36
Inventor 王伟明李路明陈少波李青峰郝红伟文雄伟胡春华马伯志刘方军
Owner BEIJING PINS MEDICAL
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