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公开(公告)号：US11701163B2
公开(公告)日：2023-07-18
申请号：US16616717
申请日：2018-05-31
发明人： Duane W. Marion
CPC分类号： A61B18/1206 , H02M3/158 , A61B2018/00767 , A61B2018/1266
摘要： A DC-to-DC voltage regulator circuit comprising: an output node; a pull-up switch and a pull-down switch with an output node coupled between them; a reactive circuit element coupled to the output node; a pull-up setting voltage circuit coupled to provide a pull-up setting voltage that is a function of a voltage at the output node; a pull-down setting voltage circuit coupled to provide a pull-down setting voltage that is a function of the voltage at the output node; a first comparator coupled to cause the pull-up switch to transition between open switch state and its closed switch state based upon a comparison of the pull-up setting voltage and a control voltage; and a second comparator coupled to cause the pull-down switch to transition between its open switch state and its closed switch state.
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公开(公告)号：US20210282833A1
公开(公告)日：2021-09-16
申请号：US16616717
申请日：2018-05-31
发明人： Duane W. Marion
摘要： A DC-to-DC voltage regulator circuit comprising: an output node; a pull-up switch and a pull-down switch with an output node coupled between them; a reactive circuit element coupled to the output node; a pull-up setting voltage circuit coupled to provide a pull-up setting voltage that is a function of a voltage at the output node; a pull-down setting voltage circuit coupled to provide a pull-down setting voltage that is a function of the voltage at the output node; a first comparator coupled to cause the pull-up switch to transition between open switch state and its closed switch state based upon a comparison of the pull-up setting voltage and a control voltage; and a second comparator coupled to cause the pull-down switch to transition between its open switch state and its closed switch state.
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公开(公告)号：US20220395310A1
公开(公告)日：2022-12-15
申请号：US17834898
申请日：2022-06-07
IPC分类号： A61B18/12
摘要： A method is provided to control delivery of heat to biological tissue comprising: imparting an RF electrical signal to the biological tissue electrically coupled between a first electrode and the second electrode; measuring frequency content of the RF electrical signal between the first electrode and the second electrode; and adjusting the RF electrical signal based upon the measured frequency content of the RF electrical signal.
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公开(公告)号：US20220000539A1
公开(公告)日：2022-01-06
申请号：US17291275
申请日：2019-10-31
发明人： Jignesh M. Shah , Duane W. Marion
摘要： Abstract: An electrosurgical method is provided to seal biological tissue comprising providing RF power to the tissue during an RF power delivery time interval comprising: measuring a change in impedance of the tissue with respect to RF energy delivered to the tissue during an initial portion of the time interval; selecting an RF power delivery profile, based at least in part upon the measured change in impedance of the tissue with respect to RF energy delivered to the tissue; and imparting RF power to the tissue according to the selected RF power delivery profile during a latter portion of the time interval.
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公开(公告)号：US20230071306A1
公开(公告)日：2023-03-09
申请号：US17800279
申请日：2021-02-18
发明人： KYLE R. MILLER , Joseph D. Bogusky , Duane W. Marion , Ian E. McDowall , Tabish Mustufa , Dinesh Rabindran , Benjamin J. Schoettgen , Jignesh Shah , Tao Zhao
摘要： A computer-assisted medical device is configured and used to endoluminally navigate to a location in the gastrointestinal system and there treat certain body lumen wall areas while avoiding other body lumen wall areas. Embodiments ablate the inner mucosal layer and sub-mucosal nerve plexus of the stomach, duodenum and jejunum to effect treatment of insulin resistance and metabolic disorders, such as Type II diabetes (T2D), polycystic ovarian syndrome (PCOS), non-alcoholic steatohepatitis (NASH), non-alcoholic fatty liver disease (NAFLD), congestive heart failure (CHF) and obstructive sleep apnea (OSA). Various sensors are used to assist a clinical operator to navigate from the mouth through the pyloric sphincter and into and through the duodenum and/or jejunum. Various sensors are used to map and identify portions of the duodenum and/or jejunum. Various lumen wall ablation devices and methods are described. Various post-treatment assessments are described.
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公开(公告)号：US20220133390A1
公开(公告)日：2022-05-05
申请号：US17435334
申请日：2020-02-28
摘要： A system is provided to detect a breach of an insulative sheath in a bipolar electrosurgical instrument the system including: a first pulse detection circuit to detect a first high frequency (HF) signal component of a HF signal conducted on a lead of the bipolar instrument; a second pulse detection circuit to detect a second HF signal component of the HF signal conducted on a conductive shield surrounding the lead; magnitude difference sampling logic to produce sample values indicative of magnitude difference between the first HF signal component and the second HF signal component; and current detection logic to detect current flow between the shield and anatomical tissue based upon the sample values.
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7.发明公开公开(公告)号：US20240299080A1
公开(公告)日：2024-09-12
申请号：US18552008
申请日：2022-03-24
CPC分类号： A61B18/1445 , A61B2018/00601 , A61B2018/0063 , A61B2018/00702 , A61B2018/00767 , A61B2018/00875 , A61B2018/1467
摘要： An electrosurgical instrument may comprise electrodes provided on the working surfaces of each jaw member that can be set to different electrical potentials and/or polarities to perform electrosurgical operations, such as sealing and cutting. Different combinations of electrodes can be selectively activated to create different pathways for the transfer of electrical energy through the material, to achieve the desired effects.
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公开(公告)号：US11701165B2
公开(公告)日：2023-07-18
申请号：US16616711
申请日：2018-05-31
CPC分类号： A61B18/1233 , A61B18/16 , A61B2018/00077 , A61B2018/00083 , A61B2018/00845 , A61B2018/00869 , A61B2018/00875 , A61B2018/00892 , A61B2018/00904 , A61B2018/1286 , A61B2018/167
摘要： An apparatus is provided to detect electrical contact between anatomical tissue and a shield conductor: a transformer; an alternating current (AC) reference frequency signal generator to inject a reference frequency signal to a primary winding of the transformer; a reactive impedance coupled in parallel with a secondary winding of the transformer between a first node and a second node; and a phase match detector circuit to detect a phase match between the reference frequency signal and a reflected reference frequency signal that is reflected from the secondary winding to the primary winding.
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公开(公告)号：US20230157783A1
公开(公告)日：2023-05-25
申请号：US17889722
申请日：2022-08-17
发明人： Kyle R. Miller , Joseph D. Bogusky , Duane W. Marion , Ian E. McDowall , Tabish Mustufa , Dinesh Rabindran , Benjamin J. Schoettgen , Jignesh Shah , Tao Zhao
CPC分类号： A61B90/39 , A61B18/1492 , A61B2018/00494
摘要： A computer-assisted medical device is configured and used to endoluminally navigate to a location in the gastrointestinal system and there treat certain body lumen wall areas while avoiding other body lumen wall areas. Embodiments ablate the inner mucosal layer and sub-mucosal nerve plexus of the stomach, duodenum and jejunum to effect treatment of insulin resistance and metabolic disorders, such as Type II diabetes (T2D), polycystic ovarian syndrome (PCOS), non-alcoholic steatohepatitis (NASH), non-alcoholic fatty liver disease (NAFLD), congestive heart failure (CHF) and obstructive sleep apnea (OSA). Various sensors are used to assist a clinical operator to navigate from the mouth through the pyloric sphincter and into and through the duodenum and/or jejunum. Various sensors are used to map and identify portions of the duodenum and/or jejunum. Various lumen wall ablation devices and methods are described. Various post-treatment assessments are described.
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10.发明申请公开(公告)号：US20210145504A1
公开(公告)日：2021-05-20
申请号：US16616711
申请日：2018-05-31
摘要： An apparatus is provided to detect electrical contact between anatomical tissue and a shield conductor: a transformer; an alternating current (AC) reference frequency signal generator to inject a reference frequency signal to a primary winding of the transformer; a reactive impedance coupled in parallel with a secondary winding of the transformer between a first node and a second node; and a phase match detector circuit to detect a phase match between the reference frequency signal and a reflected reference frequency signal that is reflected from the secondary winding to the primary winding.
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