# US 9,039,712 B2 · Shape modification system for a cooling chamber of a medical device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,039,712 B2 - Document ID: US9039712B2 - Status: Granted - Kind: B2 - Application number: 11/476,408 - Filed: 2006-06-28 - Published: 2008-01-03 - Granted: 2015-05-26 - Earliest claimed: 2006-06-28 - Assignees: Medtronic CryoCath LP - Applicants: Marwan Abboud; Dan Wittenberger - Inventors: Marwan Abboud; Dan Wittenberger - Web page: https://patentgrep.com/patent/US9039712B2 ## CPC - A61M 25/10181: {Means for forcing inflation fluid into the balloon} - A61B 2018/0212: {using an instrument inserted into a body lumen, e.g. catheter} - A61M 2025/1068: {having means for varying the length or diameter of the deployed balloon, this variations could be caused by excess pressure} - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract The present invention provides a medical device having an catheter body defining proximal and distal portions, and a guidewire lumen at least partially disposed within and movable within the catheter body. The medical device may include an expandable element defining a proximal end and a distal end, wherein the proximal end is coupled to the distal portion of the catheter body and the distal end is coupled to the guidewire lumen. In addition, an actuator element may be coupled to the guidewire lumen for longitudinal movement thereof, and a tensioning element may further be coupled to the guidewire lumen to bias the guidewire lumen and/or the expandable element towards a particular geometric configuration. ## Claims ### Claim 1 A medical device, comprising: a catheter body defining a proximal portion and a distal portion; a guidewire lumen at least partially disposed within and movable within the catheter body, wherein the guidewire lumen includes a proximal end and a distal end, the distal end being disposed outside the catheter body; a tensioning element coupled to the guidewire lumen wherein the tensioning element biases the guidewire lumen towards a pre-determined longitudinal position; and an expandable element defining a proximal end and a distal end, wherein the proximal end is coupled to the distal portion of the catheter body and the distal end is coupled to the guidewire lumen. ### Claim 2 (depends on 1) The medical device according to claim 1, further comprising an actuator element coupled to the guidewire lumen for manipulation of longitudinal movement thereof. ### Claim 3 (depends on 2) The medical device according to claim 2, further comprising a handle element coupled to the proximal portion of the catheter body. ### Claim 4 (depends on 3) The medical device according to claim 3, wherein the actuator element is movably coupled to the handle element. ### Claim 5 (depends on 4) The medical device according to claim 4, wherein the actuator element is releasably securable in a plurality of discrete positions on the handle element. ### Claim 6 (depends on 4) The medical device according to claim 4, wherein the handle element includes a plurality of indentations, and wherein the actuator element includes a plurality of protrusions engageable with the plurality of indentations. ### Claim 7 (depends on 4) The medical device according to claim 4, wherein the handle element includes a plurality of indentations, and wherein the actuator element includes a biased element engageable with the plurality of indentations. ### Claim 8 (depends on 1) The medical device according to claim 1, further comprising a size detection element coupled to the guidewire lumen. ### Claim 9 (depends on 8) The medical device according to claim 8, wherein the size detection element includes one of a resistance element, a capacitance element, and an impedance element. ### Claim 10 (depends on 1) The medical device according to claim 1, wherein the tensioning element includes a spring. ### Claim 11 (depends on 1) The medical device according to claim 1, wherein the tensioning element includes an elastic member. ### Claim 12 (depends on 1) The medical device according to claim 1, further comprising a handle element coupled to the proximal portion of the catheter body. ### Claim 13 (depends on 12) The medical device according to claim 12, wherein the tensioning element is further coupled to the handle element. ### Claim 14 A medical device, comprising: a catheter body defining a proximal portion and a distal portion; a guidewire lumen at least partially disposed within and movable within the catheter body, wherein the guidewire lumen includes a proximal end and a distal end, the distal end being disposed outside the catheter body; an expandable element defining a proximal end and a distal end, wherein the proximal end is coupled to the distal portion of the catheter body and the distal end is coupled to the guidewire lumen; and a tensioning element coupled to the guidewire lumen wherein the tensioning element biases the guidewire lumen towards a pre-determined configuration, wherein the tensioning element includes a balloon. ### Claim 15 A medical device, comprising: a catheter body defining a proximal portion and a distal portion; a guidewire lumen at least partially movably disposed within the catheter body, wherein the guidewire lumen includes a proximal end and a distal end, the distal end being disposed outside the catheter body; an expandable element defining a proximal end and a distal end, wherein the proximal end is coupled to the distal portion of the catheter body and the distal end is coupled to the guidewire lumen; a tensioning element coupled to the guidewire lumen, wherein the tensioning element biases the guidewire lumen towards a pre-determined longitudinal configuration, such that when the expandable element is expanded, a force applied by the expandable element on the guidewire lumen at least partially overcomes the bias applied by the tensioning element; and an actuator element coupled to the guidewire lumen for manipulation of longitudinal movement thereof. ### Claim 16 (depends on 15) The medical device according to claim 15, further comprising a handle element coupled to the proximal portion of the catheter body. ### Claim 17 (depends on 16) The medical device according to claim 16, wherein the tensioning element and the actuator element are further coupled to the handle element. ### Claim 18 (depends on 15) The medical device according to claim 15, further comprising a size detection element coupled to the guidewire lumen. ### Claim 19 (depends on 18) The medical device according to claim 18, wherein the size detection element includes one of a resistance element, a capacitance element, and an impedance element.