# US 2010/0168647 A1 · Non-contact electrode basket catheters with irrigation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0168647 A1 - Document ID: US20100168647A1 - Status: Published application - Kind: A1 - Application number: 12/345,606 - Filed: 2008-12-29 - Published: 2010-07-01 - Earliest claimed: 2008-12-29 - Assignees: St. Jude Medical, Atrial Fibrillation Division, Inc. - Inventors: Troy T. Tegg; Richard E. Stehr - Web page: https://patentgrep.com/patent/US20100168647A1 ## CPC - A61B 5/6858: {with a distal basket, e.g. expandable basket} - A61B 18/1492: {having a flexible, catheter-like structure, e.g. for heart ablation (A61B18/1477 takes precedence)} - A61B 2017/00867: {shape memory effect} - A61B 2018/00214: {Expandable means emitting energy, e.g. by elements carried thereon} - A61B 2018/00267: {having a basket shaped structure} - A61B 2018/00351: {Heart} - A61B 2018/00577: {Ablation} - A61B 2018/00642: {with feedback, i.e. closed loop control} - A61B 2018/00839: {Bioelectrical parameters, e.g. ECG, EEG} - A61B 2090/065: {for measuring contact or contact pressure} - A61B 2218/002: Irrigation - C08L 2201/12: Shape memory - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract Catheter systems and methods are disclosed. An exemplary catheter includes an outer tubing housing and an inner fluid delivery tubing, the inner fluid delivery tubing having at least one fluid delivery port. The catheter also includes a deployment member movable axially within the inner fluid delivery tubing. A plurality of splines are each connected at a proximal end to the outer tubing and at a distal end to deployment member. A seal is provided between the outer tubing and the inner fluid delivery tubing. A gasket is provided between the deployment member and the inner fluid delivery tubing. Both the seal and the gasket are configured to prevent blood or other fluid from ingressing into the outer tubing. ## Claims ### Claim 1 A non-contact electrode basket catheter with irrigation, comprising: an outer tubing housing an inner fluid delivery tubing, the inner fluid delivery tubing having at least one fluid delivery port; a deployment member movable axially within the inner fluid delivery tubing; a plurality of splines each connected at a proximal end to the outer tubing and at a distal end to deployment member, the plurality of splines expanding when the deployment member is moved in a first direction, and the plurality of splines collapsing when the deployment member is moved in a second direction, the first direction being opposite the second direction; a seal provided between the outer tubing and the inner fluid delivery tubing; a gasket provided between the deployment member and the inner fluid delivery tubing; and wherein both the seal and the gasket are configured to prevent blood or other fluid from ingressing into the outer tubing. ### Claim 2 (depends on 1) The catheter of claim 1, wherein the seal is maintained in a fixed position relative to the outer tubing and the inner fluid delivery tubing. ### Claim 3 (depends on 1) The catheter of claim 1, wherein the seal has an inner diameter smaller than an outer diameter of the inner fluid delivery tubing, and wherein the seal has an outer diameter larger than an inner diameter of the outer tubing. ### Claim 4 (depends on 1) The catheter of claim 1, wherein the deployment member extends through the gasket, the deployment member being moveable through the gasket. ### Claim 5 (depends on 1) The catheter of claim 1, wherein the deployment member is hollow. ### Claim 6 (depends on 5) The catheter of claim 5, further comprising at least one distal fluid delivery port fluidically connected through the hollow deployment member to a fluid source. ### Claim 7 (depends on 1) The catheter of claim 1, wherein the fluid delivery ports are positioned to irrigate between the plurality of splines to reduce clotting or thrombus formation. ### Claim 8 (depends on 1) The catheter of claim 1, wherein the splines are flex circuits. ### Claim 9 A catheter system comprising: a delivery sheath; a non-contact electrode basket catheter insertable through the delivery shaft, the basket catheter including a plurality of splines operable to be moved by a deployment member between a deployed position and an undeployed position; a fluid delivery tube housed within the basket catheter, the fluid delivery tube having at least one fluid delivery port for irrigating within the basket catheter between the plurality of splines to reduce clotting or thrombus formation; and a seal fixedly provided between the fluid delivery tube and an outer tube of the basket catheter, the seal preventing blood or fluid ingress into the outer tubing. ### Claim 10 (depends on 9) The catheter system of claim 9, wherein the seal has an inner diameter smaller than an outer diameter of the inner fluid delivery tubing, and the seal has an outer diameter larger than an inner diameter of the outer tubing. ### Claim 11 (depends on 9) The catheter system of claim 9, further comprising a gasket between the deployment member and the fluid delivery tube. ### Claim 12 (depends on 11) The catheter system of claim 11, wherein the deployment member is movable through the gasket. ### Claim 13 (depends on 9) The catheter system of claim 9, wherein the deployment member includes fluid delivery means. ### Claim 14 (depends on 13) The catheter system of claim 13, wherein the deployment member further includes at least one distal fluid delivery port. ### Claim 15 (depends on 9) The catheter system of claim 9, wherein the deployment member is a pull wire. ### Claim 16 (depends on 9) The catheter system of claim 9, wherein the splines comprise flex circuits. ### Claim 17 A non-contact electrode basket catheter system with irrigation comprising: a catheter shaft; a basket catheter insertable through the catheter shaft, the basket catheter including: a fluid delivery tubing provided within an outer tubing, a plurality of splines connected to the outer tubing and on one end and to a deployment member on an opposite end, the deployment member operable to move the splines between an expanded configuration and a collapsed configuration, fluid delivery means for irrigating within the basket catheter between the plurality of splines to reduce clotting or thrombus formation, and sealing means for stopping blood or fluid from ingressing into the catheter shaft. ### Claim 18 (depends on 17) The system of claim 17, wherein at least one sealing means is maintained in a fixed position relative to the outer tubing and the inner fluid delivery tubing. ### Claim 19 (depends on 17) The system of claim 17, wherein the deployment member extends through and is moveable through at least one sealing means. ### Claim 20 (depends on 17) The system of claim 17, wherein the deployment member includes distal fluid delivery means. ### Claim 21 (depends on 17) The system of claim 17, wherein the splines comprise flex circuits with non-contact electrodes. ### Claim 22 A method comprising: moving a deployment member axially within an inner fluid delivery tubing in a first direction to expand a plurality of splines of a non-contact electrode basket catheter, and moving the deployment member axially within the inner fluid delivery tubing in a second direction to collapse the plurality of splines; irrigating between the splines of the non-contact electrode basket catheter; and preventing fluid ingress into a catheter shaft. ### Claim 23 (depends on 22) The method of claim 22, wherein preventing fluid ingress is at least in part through use of a seal. ### Claim 24 (depends on 22) The method of claim 22, further comprising maintained the seal in a fixed position relative to the inner fluid delivery tubing during moving of the deployment member. ### Claim 25 (depends on 22) The method of claim 22, wherein preventing fluid ingress is at least in part through use of a gasket. ### Claim 26 (depends on 25) The method of claim 25, further comprising moving the deployment member through the gasket. ### Claim 27 (depends on 22) The method of claim 22, further comprising irrigating each end of the splines where the splines are attached to the basket catheter.