US 11,717,222 B2
Probe data mapping using contact information
Assaf Govari, Haifa (IL); Andres Claudio Altmann, Haifa (IL); and Yaron Ephrath, Karkur (IL)
Assigned to Biosense Webster (Israel) Ltd., Yoknearn (IL)
Filed by BIOSENSE WEBSTER (ISRAEL) LTD., Yokneam (IL)
Filed on Jun. 27, 2022, as Appl. No. 17/850,558.
Application 17/850,558 is a continuation of application No. 16/853,210, filed on Apr. 20, 2020, granted, now 11,369,300, issued on Jun. 28, 2022.
Application 16/853,210 is a continuation of application No. 12/633,324, filed on Dec. 8, 2009, granted, now 10,624,553, issued on Apr. 21, 2020.
Prior Publication US 2022/0322988 A1, Oct. 13, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/283 (2021.01); A61B 5/00 (2006.01); A61B 5/06 (2006.01); A61B 34/20 (2016.01); A61B 90/00 (2016.01)
CPC A61B 5/283 (2021.01) [A61B 5/062 (2013.01); A61B 5/6885 (2013.01); A61B 90/06 (2016.02); A61B 34/20 (2016.02); A61B 2090/065 (2016.02)] 16 Claims
OG exemplary drawing
 
1. A method of mapping a body cavity of a subject using a probe having a distal tip and being operatively connected to a processor, comprising:
contacting the distal tip of the probe with tissue at a location in the body cavity of the subject causing a deflection of the distal tip, the probe having a distal end configured for insertion into the body cavity of the subject and further comprising a contact force sensor including a position sensor, a first magnetic field transmitter, and a resilient member, the distal end having the distal tip and an electrode, the electrode configured to acquire physiological electrical activity in tissue;
generating one or more first signals with the position sensor and the first magnetic field transmitter of the contact force sensor indicative of the deflection of the distal tip resulting from a contact pressure exerted on the tissue by the distal tip, and transmitting the one or more first signals to the processor;
generating one or more second signals with the position sensor and a second magnetic field transmitter, the one or more second signals distinguishable from the one or more first signals and indicative of location and orientation coordinates of the distal end of the probe, and transmitting said one or more second signals to the processor;
in the processor, measuring the deflection of the distal tip at the location and calculating a respective contact pressure between the probe and the tissue in the body cavity at the location using the one or more first signals;
rejecting the one or more first signals for which the respective contact pressure is outside a defined range;
in the processor, automatically collecting a map point only when the calculated respective contact pressure is below a predetermined threshold, the map point including coordinate reading from the position sensor responsive to the second magnetic field transmitter;
creating or updating a map of a volume of the body cavity using the map point for the one or more first signals that are not rejected; and
wherein the processor further configured to display the map of the volume of the body cavity.