# US 9,750,858 B2 · Ventricular cuff > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,750,858 B2 - Document ID: US9750858B2 - Status: Granted - Kind: B2 - Application number: 14/817,819 - Filed: 2015-08-04 - Published: 2015-11-26 - Granted: 2017-09-05 - Earliest claimed: 2011-03-02 - Assignees: Tc1 LLC - Applicants: Thoratec Corporation - Inventors: Justin Aron Callaway; Christopher James Cotter; Cori Pierce; Maria Dominika Kulinski; Ben Gamulo; Kevin Bourque; Jeff Narum - Web page: https://patentgrep.com/patent/US9750858B2 ## CPC - A61M 39/1011: {Locking means for securing connection; Additional tamper safeties (A61M39/16 takes precedence)} - A61M 60/148: in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices - A61M 60/178: drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices - A61M 60/232: Centrifugal pumps - A61M 60/859: Connections therefor - A61M 60/863: Apex rings - 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 In one general aspect, an implant includes a cuff defining an opening configured to receive a cannula coupled to a heart pump. The implant includes a coupling mechanism having a first position and a second position, the cuff being uncoupled from the cannula in the first position and the coupling mechanism coupling the cuff to the cannula in the second position. The implant includes a locking mechanism configured to secure the coupling mechanism in the second position, and the locking mechanism is configured to be moved to a locked position after the coupling mechanism is in the second position. ## Claims ### Claim 1 An implantable system comprising: a cuff; a surface defining channels; and a clip having arms that extend into the channels, the arms travelling along the channels during a transverse linear movement of the clip relative to the cuff between an unlocked position of the clip and a locked position of the clip, the clip permitting the cuff to be coupled about a cannula when the clip is in the unlocked position, and the clip being configured to secure the cuff relative to the cannula when the clip is in the locked position. ### Claim 2 (depends on 1) The implantable system of claim 1, further comprising a cover, the clip being captured between the cover and the surface. ### Claim 3 (depends on 2) The implantable system of claim 2, wherein the cannula has a longitudinal axis, and the clip moves between the unlocked position and the locked position in a plane perpendicular to the longitudinal axis. ### Claim 4 (depends on 2) The implantable system of claim 2, wherein the cover and the surface define a slot, and the clip travels through the slot to enter the locked position. ### Claim 5 (depends on 1) The implantable system of claim 1, wherein: the channels define detents; and when the cuff is not coupled to the cannula, movement of the clip from the unlocked position toward the locked position engages the arms into the detents to impede the clip from entering the locked position. ### Claim 6 (depends on 5) The implantable system of claim 5, wherein each of the arms can engage a detent independent of whether another arm engages a detent, and engagement of any of the arms with a detent impedes the clip from entering the locked position. ### Claim 7 (depends on 5) The implantable system of claim 5, wherein, when the clip moves toward the locked position and the cuff is coupled about the cannula, the arms engage the cuff to avoid the detents. ### Claim 8 (depends on 1) The implantable system of claim 1, wherein the arms include teeth configured to limit rotation of the cuff about the cannula when the clip is in the locked position. ### Claim 9 (depends on 1) The implantable system of claim 1, wherein a sealing ring is disposed about the cannula, the sealing ring being engageable to an inner surface of the cuff to couple the cuff to the cannula. ### Claim 10 (depends on 1) The implantable system of claim 1, wherein the clip includes a visual indicator disposed such that the visual indicator is exposed when the clip is not in the locked position and the visual indicator is obscured when the clip is in the locked position. ### Claim 11 (depends on 1) The implantable system of claim 1, wherein the clip includes a latch that impedes the clip from exiting the locked position. ### Claim 12 An implant comprising: a cuff defining an opening configured to receive a cannula coupled to a heart pump; the cannula including a flange, a circumferential ridge, an attachment portion between the flange and the circumferential ridge, and an inflow portion; the attachment portion having an outer diameter greater than an outer diameter of the inflow portion; a coupling mechanism having a first position and a second position, the cuff being uncoupled from the cannula in the first position and the coupling mechanism coupling the cuff to the cannula in the second position, the coupling mechanism being configured to capture the cuff about the cannula between the flange and the circumferential ridge; and a locking mechanism configured to secure the coupling mechanism in the second position, wherein the locking mechanism is configured to be moved to a locked position after the coupling mechanism is in the second position. ### Claim 13 (depends on 12) The implant of claim 12, wherein a first action positions the coupling mechanism in the second position, and a second action activates the locking mechanism to secure the coupling mechanism in the second position, wherein the second action occurs subsequent to and separate from the first action. ### Claim 14 (depends on 12) The implant of claim 12, wherein the cuff includes an inner portion, an outer portion, and a member each disposed concentrically about the opening, the member being disposed between the inner portion and the outer portion, and the outer portion extending in a direction generally perpendicular to the member. ### Claim 15 (depends on 12) The implant of claim 12, wherein the coupling mechanism includes an attachment member coupled about the opening of the cuff, the attachment member having one or more flanged portions that extend outward from the opening, and wherein the locking mechanism includes a clip configured engage the one or more flanged portions to limit movement of the cuff relative to the cannula. ### Claim 16 (depends on 15) The implant of claim 15, wherein the clip is configured to enter a slot in the heart pump to secure the cuff to the heart pump. ### Claim 17 An implant comprising: a cuff defining an opening configured to receive a cannula coupled to a heart pump; a coupling mechanism having a first position and a second position, the cuff being uncoupled from the cannula in the first position and the coupling mechanism coupling the cuff to the cannula in the second position, the coupling mechanism including an attachment member coupled about the opening of the cuff, the attachment member having one or more flanged portions that extend outward from the opening; and a locking mechanism configured to secure the coupling mechanism in the second position, the locking mechanism being configured to be moved to a locked position after the coupling mechanism is in the second position, the locking mechanism including a clip configured to engage the one or more flanged portions to limit movement of the cuff relative to the cannula, the clip being configured to enter a slot in the heart pump to secure the cuff to the heart pump. ### Claim 18 (depends on 17) The implant of claim 17, wherein a first action positions the coupling mechanism in the second position, and a second action activates the locking mechanism to secure the coupling mechanism in the second position, wherein the second action occurs subsequent to and separate from the first action. ### Claim 19 (depends on 17) The implant of claim 17, wherein the cannula includes a flange and a circumferential ridge, and the coupling mechanism is configured to capture the cuff about the cannula between the flange and the circumferential ridge. ### Claim 20 (depends on 17) The implant of claim 17, wherein the cuff includes an inner portion, an outer portion, and a member each disposed concentrically about the opening, the member being disposed between the inner portion and the outer portion, and the outer portion extending in a direction generally perpendicular to the member.