Implantable medical device and front-end circuit
A technology of implantable medical treatment and medical equipment, which is applied in the field of improvement of implantable medical signal processing circuits, can solve the problems of high power consumption, high power consumption of operational amplifiers, large circuit area, etc., so as to save power consumption and reduce circuit complexity degree of effect
Pending Publication Date: 2022-06-07
苏州无双医疗设备有限公司
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Problems solved by technology
Op amps with high gain-bandwidth products usually also have higher power dissipation
[0007] 2. In order to achieve a steep out-of-band roll-off, a high-order filter circuit is required, which leads to a larger circuit area and higher power consumption
Method used
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[0026] The following is further illustrated in conjunction with the accompanying drawings. Figure 1 The implantable heart monitor is used as an illustration of the application of the implantable medical device. The technical solution of the present application may also be used for pacemakers, leadless pacemakers, cardiac defibrillators, cardiac resynchronization defibrillators.
[0027] The implantable medical device 100 includes a titanium housing 114 and a head structure mounted on the titanium housing 114 12. The head structure is a biocompatible material, the interior of which comprises an antenna and a first electrode 104, the first electrode 14 and the antenna via a feed-through assembly (not shown in the figure) connected to the titanium housing 114 inside the PCB board, the feed-through assembly to achieve the housing 114 internal seal while maintaining the electrode and antenna electrical connection. Preferably, the head is a silicone material, the first surface of the fir...
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The invention discloses implantable medical equipment, which comprises a front-end circuit for sensing a signal; according to the front-end circuit, the amplification circuit is configured as a low-pass filter at the same time; the amplifying circuit comprises an operational amplifier, and the input end of the operational amplifier inputs a mixed signal of a low-frequency signal and high-frequency noise; according to the input mixed signal, the amplification circuit is configured as follows: the gain of a low-pass filter * low-pass cut-off frequency is less than or equal to a gain bandwidth product lt; the gain of the low-pass filter is multiplied by any frequency of the high-frequency noise signal; and the highest frequency of the high-frequency noise is less than or equal to the lowest gain frequency of the operational amplifier.
Description
Technical field [0001] The present application belongs to the field of implantable medical devices, in particular relates to the improvement of implantable medical signal processing circuits. Background [0002] Medical devices, often permanently implanted, require months, years, or even decades to work in the human body. Take the Implantable Heart Monitor (ICM), for example, which takes 2-3 years to work continuously after it is implanted in the human body. Implantable pacemakers work for 6-12 years, implantable cardiac defibrillators work in the human body for about 10 years, and cardiac resynchronization therapy and implantable cardiac automated defibrillators (CRTDs) also need to be used for several years. [0003] The front-end sensing circuit of implantable medical devices requires long-term boot operation and is designed as an ultra-low-power circuit, and any circuit design that can reduce power consumption while meeting the needs of use is worth considering. [0004] In t...
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IPC IPC(8): A61B5/318A61B5/287A61B5/00A61N1/362A61N1/39H03F3/45
CPCA61B5/318A61B5/287A61N1/362A61N1/39H03F3/45475A61B5/7203A61B5/725A61B5/7225
Inventor 史弋宇洪峰李平平利川
Owner 苏州无双医疗设备有限公司