# US 2021/0330960 A1 · Pivot latch mechanism for external battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0330960 A1 - Document ID: US20210330960A1 - Status: Published application - Kind: A1 - Application number: 17/149,256 - Filed: 2021-01-14 - Published: 2021-10-28 - Earliest claimed: 2020-04-23 - Assignees: HeartWare, Inc. - Applicants: HeartWare, Inc. - Inventors: Sacha Hall; Thai Nguyen - Web page: https://patentgrep.com/patent/US20210330960A1 ## CPC - A61M 60/20: Type thereof - A61M 60/876: Implantable batteries - A61M 60/122: Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body - A61M 60/508: Electronic control means, e.g. for feedback regulation - A61M 60/81: Pump housings - A61M 60/871: Energy supply devices; Converters therefor - A61M 60/878: Electrical connections within the patient's body - A61M 60/88: Percutaneous cables - A61M 2205/04: implanted - 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 mechanism between a controller for an implantable blood pump and a battery housing. The attachment mechanism includes a latch moveably coupled to the controller. The latch includes a pawl configured to engage the battery housing. The latch is configured to only pivot when the battery housing is engaged to the pawl during attachment of the battery housing to the controller. ## Claims ### Claim 1 An attachment mechanism between a controller for an implantable blood pump and a battery housing, comprising: a latch moveably coupled to the controller; and the latch including a pawl configured to engage the battery housing, the latch being configured to only pivot when the battery housing is engaged to the pawl during attachment of the battery housing to the controller. ### Claim 2 (depends on 1) The mechanism of claim 1, wherein the controller includes at least one pivot slot configured to engaged at least one corresponding pivot tab on the battery housing. ### Claim 3 (depends on 1) The mechanism of claim 1, wherein the latch is configured to only pivot when the battery housing is disengaged from the pawl during detachment of the battery from the controller. ### Claim 4 (depends on 1) The mechanism of claim 1, wherein the latch is coupled to a spring. ### Claim 5 (depends on 4) The mechanism of claim 4, wherein the latch includes an actuator, and wherein the actuator is movable. ### Claim 6 (depends on 5) The mechanism of claim 5, wherein the spring is axially aligned within pawl and substantially perpendicular to the actuator. ### Claim 7 (depends on 6) The mechanism of claim 6, wherein the latch pivots about a pin. ### Claim 8 (depends on 1) The mechanism of claim 1, wherein the pawl includes a projection at its distal end. ### Claim 9 (depends on 1) The mechanism of claim 1, wherein when the battery housing is attached to the controller, the controller is in electrical communication with a battery within the battery housing. ### Claim 10 An attachment mechanism between a controller for an implantable blood pump and a battery housing, comprising: a latch moveably coupled to the controller; a strike plate coupled to the battery housing; and the latch including a pawl configured to engage the strike plate, the latch being configured to only pivot when the strike plate is engaged to the pawl during attachment of the battery housing to the controller. ### Claim 11 (depends on 10) The mechanism of claim 10, wherein the controller includes at least one pivot slot configured to engage at least one corresponding pivot tab on the battery housing. ### Claim 12 (depends on 10) The mechanism of claim 10, wherein the latch is configured to only pivot when the strike plate is disengaged from the pawl during detachment of the battery housing from the controller. ### Claim 13 (depends on 10) The mechanism of claim 10, wherein the latch is coupled to a spring. ### Claim 14 (depends on 13) The mechanism of claim 13, wherein the latch includes an actuator, and wherein the actuator is movable. ### Claim 15 (depends on 14) The mechanism of claim 14, wherein the spring is axially aligned within pawl and substantially perpendicular to the actuator. ### Claim 16 (depends on 15) The mechanism of claim 15, wherein the latch pivots about a pin. ### Claim 17 (depends on 10) The mechanism of claim 10, wherein the pawl includes a projection at its distal end. ### Claim 18 (depends on 17) The mechanism of claim 17, wherein the projection engages the strike plate. ### Claim 19 (depends on 10) The mechanism of claim 10, wherein when the battery housing is attached to the controller, the controller is in electrical communication with a battery within the battery housing. ### Claim 20 An attachment mechanism between a controller for an implantable blood pump and a battery housing, comprising: a latch moveably coupled to the controller; a strike plate coupled to the battery housing; the controller includes a pair of pivot slots configured to engage a pair of corresponding pivot tabs on the battery housing; the latch including a pawl configured to engage the strike plate, the latch being configured to only pivot when the strike plate is engaged to the pawl during attachment of the battery housing to the controller; and the latch is configured to only pivot when the strike plate is disengaged from the pawl during detachment of the battery housing from the controller.