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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11090116 B1

PDFFull Text
Date of Patent:
Aug. 17, 2021

Filed:

May. 19, 2017

Electrosurgical apparatus and method for promoting haemostasis in biological tissue

Applicant:

Creo Medical Limited, Chepstow, GB;

Inventors:

Christopher Paul Hancock, Bath, GB;

Francis Amoah, Chepstow, GB;

Martin Jarman, Chepstow, GB;

Assignee:

CREO MEDICAL LIMITED, Chepstow, GB;

Attorney:

Arent Fox LLP

Primary Examiner:

Linda C Dvorak

Assistant Examiner:

Lindsay Regan Lancaster

Int. Cl.
CPC ...
A61B 18/10 (2006.01); A61B 18/12 (2006.01); A61B 18/18 (2006.01); A61B 18/14 (2006.01); A61N 5/04 (2006.01); A61B 1/015 (2006.01); A61B 18/08 (2006.01); A61B 17/00 (2006.01); A61B 18/00 (2006.01); A61B 1/313 (2006.01); A61B 1/267 (2006.01); A61B 1/07 (2006.01); A61B 1/00 (2006.01); A61B 1/005 (2006.01); A61B 1/06 (2006.01); A61B 1/273 (2006.01);
U.S. Cl.
CPC ...
A61B 18/1815 (2013.01); A61B 1/015 (2013.01); A61B 18/1206 (2013.01); A61B 18/14 (2013.01); A61B 18/1492 (2013.01); A61N 5/04 (2013.01); A61B 1/0052 (2013.01); A61B 1/0057 (2013.01); A61B 1/00195 (2013.01); A61B 1/0684 (2013.01); A61B 1/07 (2013.01); A61B 1/2676 (2013.01); A61B 1/2736 (2013.01); A61B 1/3132 (2013.01); A61B 2017/00115 (2013.01); A61B 2017/00141 (2013.01); A61B 2017/00176 (2013.01); A61B 2018/00083 (2013.01); A61B 2018/00494 (2013.01); A61B 2018/00595 (2013.01); A61B 2018/00642 (2013.01); A61B 2018/00654 (2013.01); A61B 2018/00678 (2013.01); A61B 2018/00708 (2013.01); A61B 2018/00779 (2013.01); A61B 2018/00803 (2013.01); A61B 2018/00827 (2013.01); A61B 2018/00875 (2013.01); A61B 2018/00886 (2013.01); A61B 2018/00892 (2013.01); A61B 2018/00982 (2013.01); A61B 2018/00994 (2013.01); A61B 2018/126 (2013.01); A61B 2018/183 (2013.01); A61B 2018/1823 (2013.01); A61B 2018/1861 (2013.01);
Abstract

An electrosurgical waveform having both radiofrequency (RF) energy and microwave energy components that is arranged to perform efficient haemostasis in biological tissue. The waveform comprises a first portion primarily of RF electromagnetic energy, and a second portion primarily of microwave electromagnetic energy that follows the first portion. The second portion further comprises a plurality of RF pulses, wherein the first portion transitions to the second portion when either a duration of the first portion meets or exceeds a predetermined duration threshold, or an impedance determined during the first portion meets or exceeds a predetermined threshold. The waveform is arranged to deliver energy rapidly so that haemostasis can occur in a short time frame in a situation where the maximum available power is limited, or to avoid undesirable thermal damage to the biological tissue.

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