Methods, systems, and devices relating to wireless power transfer

A technology of energy transmission and internal coils, applied in the direction of electrotherapy, electrodes, internal electrodes, etc., can solve the problems of bulky, heating, and not eliminating infection

Inactive Publication Date: 2015-04-01
SUNSHINE HEART PTY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these prior art TET systems do not eliminate the risk of infection because existing systems are bulky and require a significant amount of surgical and implant hardware
Furthermore, existing technologies require close mechanical coupling for efficient energy transfer, which increases the power density and electromagnetic field exposure to the patient
This is undesirable because high electromagnetic field exposure can lead to specific absorption rates exceeding the limits of biological tissue, and high power densities can lead to localized heating of patient tissue, which can lead to tissue necrosis

Method used

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  • Methods, systems, and devices relating to wireless power transfer
  • Methods, systems, and devices relating to wireless power transfer
  • Methods, systems, and devices relating to wireless power transfer

Examples

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example

[0074] In one instance, the system has something like figure 2 The inner coil of the coil 20 . In this example, the coil 20 has a width (W) of 15 cm and a height (H) of 25 cm, as Figure 10 The base coil 92 described in . The electrical model of the TET system in this example is in Figure 9 is shown in , and is a typical depiction of an air-core transformer, with a signal source and a resonantly tuned transmitter coupled by a coupling coefficient M to a sub-inner receiver with a resonantly tuned and rectifier and control circuit 90 . The frequency of operation is primarily determined by analysis of tissue absorption and permissible exposure safety limits from regulatory authorities, and is further discussed in the Exemplary Coil Design for the Test System that follows.

[0075] The effective diameter of the exemplary coil can be determined by the effective coil area. Based on some simple assumptions, the effective diameter of an exemplary coil can be determined by calcul...

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Abstract

The various embodiments disclosed herein relate to transcutaneous energy transfer systems comprising an internal coil positioned within a cavity of a patient and an external coil inductively coupled to the internal coil. The systems can be coupled to any implantable medical devices, such as, for example, a heart assist device.

Description

[0001] Related References to Cross-Applications [0002] This application claims the benefit of US Provisional Patent Application No. 61 / 610,173 (filed March 12, 2012) under 35 U.S.C. §1 19(e), which is hereby incorporated by reference in its entirety. technical field [0003] Embodiments disclosed herein relate to methods for transcutaneously delivering electrical power into a cavity of a patient to power electrotherapeutic devices including, for example, cardiac assist devices in the patient's chest and lung cavities. Background technique [0004] Fully implantable electrotherapeutic devices range from battery-powered pacemakers to novel treatments that require higher levels of energy input into the body, including neurostimulation, drug delivery, muscle stimulation (TENS), cardiac assist technology and the use of artificial hearts. Heart replacement. Advances in battery technology have made it possible to implant low-power medical devices that can run for up to a decade....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N1/05
CPCA61N1/3787A61B2560/0219A61M2205/8243H02J7/0042H02J50/50H02J50/12A61M2209/088A61M60/161A61M60/289A61M60/873A61M60/869A61M60/468A61M60/268A61M60/427A61M60/562A61M60/165H02J2310/23A61M60/148
Inventor D.拉丰泰恩
Owner SUNSHINE HEART PTY LTD
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