# US 9,039,699 B2 · Methods and systems for treatment of tissue in a body lumen > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,039,699 B2 - Document ID: US9039699B2 - Status: Granted - Kind: B2 - Application number: 13/181,484 - Filed: 2011-07-12 - Published: 2012-01-05 - Granted: 2015-05-26 - Earliest claimed: 1999-11-16 - Assignees: Covidien LP - Applicants: Jerome Jackson; Roger A. Stern - Inventors: Jerome Jackson; Roger A. Stern - Web page: https://patentgrep.com/patent/US9039699B2 ## CPC - A61B 18/1492: {having a flexible, catheter-like structure, e.g. for heart ablation (A61B18/1477 takes precedence)} - A61B 5/037: {Measuring oesophageal pressure} - A61B 5/0538: invasively, e.g. using a catheter - A61B 5/1076: {for measuring dimensions inside body cavities, e.g. using catheters (A61B3/1005 takes precedence)} - A61B 5/4233: {oesophagus} - A61B 18/1485: {having a short rigid shaft for accessing the inner body through natural openings} - A61N 1/06: for high-frequency therapy - A61N 1/403: {for thermotherapy, e.g. hyperthermia} - A61B 5/053: Measuring electrical impedance or conductance of a portion of the body - A61B 5/6885: {Monitoring or controlling sensor contact pressure} - A61B 2018/0016: {Energy applicators arranged in a two- or three dimensional array} - A61B 2018/00214: {Expandable means emitting energy, e.g. by elements carried thereon} - A61B 2018/0022: {Balloons} - A61B 2018/00482: {Digestive system} - A61B 2018/00488: {Esophagus} - A61B 2018/00494: {Stomach, intestines or bowel} - A61B 2018/00553: {Sphincter} - A61B 2018/00577: {Ablation} - A61B 2018/00738: {Depth, e.g. depth of ablation} - A61B 2018/00797: {measured by multiple temperature sensors} - A61B 2018/126: {bipolar} - A61B 2018/1467: {using more than two electrodes on a single probe} - A61B 2090/061: {for measuring dimensions, e.g. length} - A61B 2090/064: {for measuring force, pressure or mechanical tension} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B) ## Abstract A system for measuring physiologic characteristics or treating tissue in a body lumen. The system may be used for treating abnormal mucosa in the esophagus. The system comprises an energy delivery device, such as an ablation device including an electrode support and an electrode pattern on the support. The ablation device may expand in size from a pre-deployed state to a deployed state. The system may include a sizing device having an inflatable balloon on a distal end of a catheter that is inflated with an expansion medium to expand the balloon to engage the wall of the esophagus so that the internal cross-section can be calculated or measured. The sizing device may also a controller for delivering an expansion medium and measuring the amount and pressure of the expansion medium inside the catheter. Methods of treating or diagnosing tissue are also disclosed. ## Claims ### Claim 1 A system for treating abnormal tissue at a treatment location, comprising: an electrode support comprising a flexible, non-distensible backing with a pre-deployed state and a deployed state, a size of the electrode support in the deployed state selected to engage a wall of an esophageal body lumen; an inflatable member around which the electrode support is wrapped such that the electrode support extends continuously around a circumference of the inflatable member and continuously covers the circumference along a length of the inflatable member between a distal end and a proximal end of the inflatable member; and an electrode pattern positioned on the electrode support such that the electrode pattern wraps around a circumference of the electrode support and adapted to deliver energy to at least a portion of the engaged wall of the esophageal body lumen at a treatment location. ### Claim 2 (depends on 1) The system of claim 1, wherein a size of the electrode support in the pre-deployed state is selected for insertion and movement of the electrode support in the body lumen. ### Claim 3 (depends on 1) The system of claim 1, wherein a size of the electrode support in the pre-deployed state is selected for insertion in a lumen of an endoscope. ### Claim 4 (depends on 1) The system of claim 1, wherein the abnormal tissue is Barrett's esophagus. ### Claim 5 (depends on 1) The system of claim 1, wherein the electrode pattern comprises a plurality of bipolar pairs. ### Claim 6 (depends on 1) The system of claim 1, wherein the electrode pattern comprises a plurality of bipolar rings. ### Claim 7 (depends on 1) The system of claim 1, wherein the electrode pattern comprises a plurality of bipolar axial interlaced fingers electrodes. ### Claim 8 (depends on 1) The system of claim 1, wherein the electrode pattern comprises a plurality of electrodes with a spacing between adjacent electrodes no more than 3 mm. ### Claim 9 (depends on 8) The system of claim 8, wherein the plurality of electrodes includes a spacing between adjacent electrodes no more than 2 mm. ### Claim 10 (depends on 1) The system of claim 1, wherein the inflatable member comprises a cylindrical inflatable member. ### Claim 11 A device for treating abnormal tissue at a treatment location, comprising: an electrode support comprising a flexible, non-distensible backing with a pre-deployed state and a deployed state, a size of the electrode support in the deployed state selected to engage a wall of an esophageal body lumen; and an inflatable member around which the electrode support is wrapped such that the electrode support extends continuously around a circumference of the inflatable member and continuously covers the circumference along a length of the inflatable member between a distal end and a proximal end of the inflatable member; and an electrode pattern positioned on the electrode support and adapted to deliver energy to at least a portion of the engaged wall of the esophageal body lumen at a treatment location, wherein the electrode pattern includes at least a plurality of bipolar rings or bipolar axial interlaced finger electrodes. ### Claim 12 (depends on 11) The device of claim 11, wherein a size of the electrode support in the pre-deployed state is selected for insertion and movement of the electrode support in the body lumen. ### Claim 13 (depends on 11) The device of claim 11, wherein a size of the electrode support in the pre-deployed state is selected for insertion in a lumen of an endoscope. ### Claim 14 (depends on 11) The device of claim 11, wherein the abnormal tissue is Barrett's esophagus. ### Claim 15 (depends on 11) The device of claim 11, wherein the electrode pattern wraps around a circumference of the electrode support. ### Claim 16 (depends on 11) The device of claim 11, wherein the electrode pattern comprises a plurality of electrodes with a spacing between adjacent electrodes no more than 3 mm. ### Claim 17 (depends on 16) The device of claim 16, wherein the plurality of electrodes include a spacing between adjacent electrodes no more than 2 mm. ### Claim 18 (depends on 11) The device of claim 11, wherein the inflatable member comprises a cylindrical inflatable member.