# US 11,896,814 B2 · Toolless quick connect sewing ring > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,896,814 B2 - Document ID: US11896814B2 - Status: Granted - Kind: B2 - Application number: 17/178,335 - Filed: 2021-02-18 - Published: 2021-11-04 - Granted: 2024-02-13 - Earliest claimed: 2020-05-04 - Assignees: HeartWare, Inc. - Applicants: HeartWare, Inc. - Inventors: Charles R. Shambaugh, Jr. - Web page: https://patentgrep.com/patent/US11896814B2 ## CPC - A61M 60/863: Apex rings - 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 60/216: including a rotating member acting on the blood, e.g. impeller - A61M 60/859: Connections therefor - 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 An attachment device has a sewing ring frame and a locking mechanism movably mounted on the sewing ring frame. The locking mechanism includes a biasing element projecting from the outer surface of the sewing ring frame and a slide substantially co-planar to the sewing ring frame. The slide further includes a first mating member. Additionally, the locking mechanism includes at least one guide member overlapping the slide and a locking pin disposed between the slide and the sewing ring frame. The biasing element is movably coupled to the locking pin and the slide and is transitionable between a first configuration in which the first mating member is in a disengaged position to a second configuration in which the first mating member is in an engaged position. ## Claims ### Claim 1 A system comprising: an apical attachment device comprising: a sewing ring frame; a locking element movably mounted to the sewing ring frame, the locking element including a biasing element projecting from an outer surface of the sewing ring frame and at least one guide member; a slide configured to move with respect to the sewing ring frame, wherein the at least one guide member overlaps the slide; a first mating member on the slide; a locking pin movably disposed between the slide and the sewing ring frame, wherein the biasing element is movably coupled to the locking pin and the slide, wherein the biasing element is transitionable between a first configuration in which the first mating member is in an engaged position to a second configuration in which the first mating member is in a disengaged position, and wherein the slide is configured to move with respect to the sewing ring frame when the biasing element transitions between the first configuration and the second configuration; and an implantable blood pump comprising a second mating member, wherein the first mating member is configured to lockingly engage the second mating member when the slide is in the first configuration and is configured to disengage the second mating member when the slide is in the second configuration. ### Claim 2 (depends on 1) The system of claim 1, wherein the locking element further includes a flange coupled to the biasing element. ### Claim 3 (depends on 1) The system of claim 1, wherein the biasing element is a spring. ### Claim 4 (depends on 1) The system of claim 1, wherein the first mating member is a tab. ### Claim 5 A system, comprising: an apical attachment device including a first mating member, wherein the apical attachment device comprises a sewing ring frame and a slide, wherein the slide is movable with respect to the sewing ring frame; a locking element movably mounted to the sewing ring frame, wherein the locking element includes at least one guide member overlapping the slide; and an implantable blood pump defining a second mating member, the first mating member being configured to lockingly engage the second mating member to lock the implantable blood pump to the apical attachment device, wherein the slide is configured to cause the first mating member to lockingly engage the second mating member when the slide moves with respect to the sewing ring frame. ### Claim 6 (depends on 5) The system of claim 5, wherein the first mating member includes a tab. ### Claim 7 (depends on 5) The system of claim 5, wherein the second mating member includes a plurality of detents. ### Claim 8 (depends on 5) The system of claim 5, wherein the first mating member is directly engageable to the second mating member. ### Claim 9 (depends on 5) The system of claim 5, wherein the engagement of the first mating member to the second mating member prevents rotational displacement of the implantable blood pump when the sewing ring frame is affixed to the implantable blood pump. ### Claim 10 (depends on 5) The system of claim 5, wherein the implantable blood pump further includes an inflow cannula and wherein the second mating member is a plurality of detents on the inflow cannula. ### Claim 11 (depends on 10) The system of claim 10, wherein the plurality of detents are circumferentially disposed around the inflow cannula. ### Claim 12 (depends on 5) The system of claim 5, wherein the slide includes the first mating member. ### Claim 13 (depends on 5) The system of claim 5, wherein the locking element further includes a locking pin movably disposed between the slide and the sewing ring frame. ### Claim 14 (depends on 13) The system of claim 13, wherein the locking element further includes a biasing element projecting from an outer surface of the sewing ring frame. ### Claim 15 (depends on 14) The system of claim 14, wherein the biasing element is transitionable between a first configuration in which the first mating member is in an engaged position to a second configuration in which the first mating member is in a disengaged position. ### Claim 16 (depends on 5) The system of claim 5, wherein the slide is configured to establish a contracted position with respect to the sewing ring frame and configured to establish a retracted position with respect to the sewing ring frame, wherein the first mating member is configured to be lockingly engaged with the second mating member when the slide is in the contracted position, and wherein the first mating member is configured to disengage from the second mating member when the slide is in the retracted position. ### Claim 17 A system, comprising: an attachment device including: a sewing ring frame; and a locking element movably mounted to a first surface of the sewing ring frame, the locking element including: a spring biasing element projecting from an outer surface of the sewing ring frame; a slide; at least one guide member overlapping the slide; a tab disposed on the slide; and a locking pin disposed between the slide and the sewing ring frame, the spring biasing element being movably coupled to the locking pin and the slide, and the spring biasing element being transitionable between a first configuration in which the tab is in an engaged position to a second configuration in which the tab is in a disengaged position; and a Ventricular Assist Device (VAD), including: an inflow cannula having a plurality of detents circumferentially disposed around a proximal portion of the inflow cannula, the tab being configured to lockingly engage the plurality of detents to lock the VAD to the attachment device, the engagement of the tab and the plurality of detents preventing rotational displacement of the VAD, wherein tab is configured to lockingly engage the plurality of detents in the engaged position, and wherein the tab is configured to disengage from the plurality of detents in the disengaged position.