US 11,998,741 B2
Charge compensation circuit for neural stimulation
Bin Xia, Shenzhen (CN); Yu Zhao, Shenzhen (CN); Yu Lin, Shenzhen (CN); and Zhi Chen, Shenzhen (CN)
Assigned to SHENZHEN SIBIONICS TECHNOLOGY CO., LTD., Shenzhen (CN)
Filed by SHENZHEN SIBIONICS TECHNOLOGY CO., LTD., Shenzhen (CN)
Filed on Aug. 17, 2021, as Appl. No. 17/445,214.
Application 17/445,214 is a continuation of application No. 16/337,920, granted, now 11,097,105, issued on Aug. 24, 2021, previously published as PCT/CN2017/104678, filed on Sep. 29, 2017.
Claims priority of application No. 201610875326.8 (CN), filed on Sep. 30, 2016; and application No. 201610879293.4 (CN), filed on Sep. 30, 2016.
Prior Publication US 2022/0032056 A1, Feb. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61N 1/36 (2006.01); A61N 1/05 (2006.01); H03K 3/017 (2006.01); H03K 3/78 (2006.01); H03K 5/00 (2006.01); H03K 5/02 (2006.01)
CPC A61N 1/36046 (2013.01) [A61N 1/0543 (2013.01); A61N 1/36125 (2013.01); A61N 1/36142 (2013.01); A61N 1/36175 (2013.01); H03K 3/017 (2013.01); H03K 3/78 (2013.01); H03K 5/00006 (2013.01); H03K 5/02 (2013.01); A61N 1/36157 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A charge compensation circuit for neural stimulation, comprising:
a detection circuit for detecting a total charge amount during one stimulation period of bidirectional pulse current signals generated by a current generator in a pulse current generation circuit;
a judgment circuit for determining whether the total charge amount detected by the detection circuit exceeds a safe charge amount range; and
a compensation circuit for generating a compensation pulse current signal with a net charge amount when the judgment circuit determines that the total charge amount exceeds the safe charge amount range, so that the total charge amount is within the safe charge amount range;
wherein the charge compensation circuit is configured to determine whether to conduct charge compensation on the current generator according to the total charge amount during one stimulation period of the bidirectional pulse current signals generated by the current generator for neural stimulation to ensure that the total charge amount generated by the current generator is within the safe charge amount range.