# US 2010/0168564 A1 · Remote sensing catheter system and methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0168564 A1 - Document ID: US20100168564A1 - Status: Published application - Kind: A1 - Application number: 12/653,281 - Filed: 2009-12-09 - Published: 2010-07-01 - Earliest claimed: 2008-08-12 - Assignees: Osprey Medical, Inc. - Inventors: James Edward Shapland; Tuan M. Doan; Christopher G. Quinn - Web page: https://patentgrep.com/patent/US20100168564A1 ## CPC - A61M 1/74: {Suction control (underwater drainage A61M1/61)} - A61M 2202/049: Toxic - 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)} ## Abstract A remote sensing catheter system including an injection catheter and a collection catheter. In one method of use, an external sensor of the system determines the timing of operation of the collection catheter. In another method of use, a sensor determines the volume of medium in the injection. ## Claims ### Claim 1 A method of collecting a medium from a coronary sinus using a catheter system, the method comprising the steps of: a) providing a catheter system including a collection catheter; b) positioning a distal end of the collection catheter within the patient's coronary sinus; c) detecting an injection of the medium in the catheter system, including: i) establishing a start time of the injection; and ii) determining the volume of medium in the injection; and d) initiating operation of the collection catheter a predetermined time after the start time of the injection, wherein the step of initiating operation occurs only when the volume of medium in the injection is greater than a predetermined amount. ### Claim 2 (depends on 1) The method of claim 1, further including providing an injection sensor that detects the injection of the medium. ### Claim 3 (depends on 2) The method of claim 2, wherein the injection sensor is located outside the patient's body during use. ### Claim 4 (depends on 2) The method of claim 2, further including providing an interface unit electrically connected to both the injection sensor and an aspiration unit, the aspiration unit being in fluid communication with the collection catheter, the interface unit controlling the initiation of operation of the collection catheter. ### Claim 5 (depends on 1) The method of claim 1, wherein the predetermined time after the start time of the injection is about 2 to 6 seconds. ### Claim 6 (depends on 1) The method of claim 1, wherein the predetermined time after the start time of the injection is about 4 to 6 seconds. ### Claim 7 (depends on 1) The method of claim 1, wherein the step of determining the volume of medium in the injection is based upon the duration of the injection. ### Claim 8 (depends on 7) The method of claim 7, wherein the step of initiating operation occurs only when the duration of the injection is greater than 1.5 seconds. ### Claim 9 (depends on 1) The method of claim 1, wherein the step of detecting the injection occurs prior to the medium reaching the patient's coronary artery. ### Claim 10 (depends on 2) The method of claim 2, wherein the injection sensor is a pressure sensor. ### Claim 11 (depends on 1) The method of claim 1, further including establishing an end time of the injection, and ceasing operation of the collection catheter a predetermined time after the end time of the injection. ### Claim 12 (depends on 11) The method of claim 11, wherein the predetermined time after the end time of the injection is about 4 to 10 seconds after the end time. ### Claim 13 (depends on 1) The method of claim 1, further including providing a collection sensor that detects the absence of the medium in the collection catheter, and ceasing operation of the collection catheter upon detecting the absence of the medium in the collection catheter. ### Claim 14 (depends on 13) The method of claim 13, wherein the collection sensor is an impedance sensor. ### Claim 15 (depends on 13) The method of claim 13, further including providing an interface unit electrically connected to both the collection sensor and an aspiration unit, the aspiration unit being in fluid communication with the collection catheter, the interface unit controlling the cessation of operation of the collection catheter. ### Claim 16 (depends on 13) The method of claim 13, wherein the collection sensor is located outside the patient's body during use. ### Claim 17 (depends on 1) The method of claim 1, wherein the step of detecting the injection of the medium includes detecting the injection of a contrast media. ### Claim 18 A method of collecting a medium from a coronary sinus using a catheter system, the method comprising the steps of: a) providing a catheter system including a collection catheter, the collection catheter including a sensor, the sensor being located outside a patient's body during use; b) positioning a distal end of the collection catheter within the patient's coronary sinus; c) initiating operation of the collection catheter to remove the medium from the patient's coronary sinus; and d) ceasing operation of the collection catheter when the sensor detects the absence of the medium in the collection catheter. ### Claim 19 A method of removing a medium from a coronary sinus, the method comprising the steps of: a) providing a catheter system including: i) an injection senor, the injection sensor being external to a patient's body during use of the system; ii) a collection catheter and a collection sensor, the collection sensor being external to the patient's body during use of the system; iii) an aspiration unit in fluid communication with the collection catheter; and iv) an interface unit electrically connected to each of the injection sensor, the collection sensor, and the aspiration unit, the interface unit controlling the operation of the collection catheter; b) positioning a distal end of the collection catheter within the patient's coronary sinus; c) detecting the injection of a medium in the catheter system with the injection sensor, prior to the medium reaching the patient's coronary artery, the step of detecting including: i) establishing a start time of the injection; and ii) monitoring the injection duration; d) automatically initiating operation of the collection catheter a predetermined time after the start time of the injection, wherein the step of initiating operation occurs only when the injection duration is greater than a predetermined duration parameter; e) after initiating operation of the collection catheter, monitoring the collection sensor for the presence of the medium in the collection catheter; and e) automatically ceasing operation of the collection catheter after a desired majority of the medium has been removed from the patient's coronary sinus. ### Claim 20 (depends on 19) The method of claim 19, wherein the injection sensor is a pressure sensor. ### Claim 21 (depends on 19) The method of claim 19, wherein the collection sensor is an impedance sensor. ### Claim 22 (depends on 19) The method of claim 19, wherein the predetermined time after the start time of the injection is about 4 to 6 seconds. ### Claim 23 (depends on 22) The method of claim 22, wherein the predetermined duration parameter is 1.5 seconds. ### Claim 24 (depends on 19) The method of claim 19, wherein the step of detecting the injection of the medium includes detecting the injection of a contrast media. ### Claim 25 (depends on 1) The method of claim 1, wherein the step of providing the catheter system includes providing the catheter system including an injection catheter, the method further including positioning a distal end of the injection catheter within a patient's coronary artery, and detecting the injection of the medium in the injection catheter of the catheter system. ### Claim 26 (depends on 19) The method of claim 19, wherein the step of providing the catheter system includes providing the catheter system including an injection catheter, the method further including positioning a distal end of the injection catheter within a patient's coronary artery, and detecting the injection of the medium in the injection catheter of the catheter system.