# US 2025/0082944 A1 · Implantable medical device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0082944 A1 - Document ID: US20250082944A1 - Status: Published application - Kind: A1 - Application number: 18/960,840 - Filed: 2024-11-26 - Published: 2025-03-13 - Earliest claimed: 2009-07-31 - Assignees: Medtronic, Inc. - Applicants: Medtronic, Inc. - Inventors: Steven T. Deininger; Michael J. Baade; Charles E. Peters - Web page: https://patentgrep.com/patent/US20250082944A1 ## CPC - A61N 1/375: Constructional arrangements, e.g. casings - A61N 1/086: {Magnetic resonance imaging [MRI] compatible leads} - A61N 1/18: Applying electric currents by contact electrodes - A61N 1/37512: {Pacemakers} - A61N 1/3752: {Details of casing-lead connections} - A61N 1/3758: {Packaging of the components within the casing} - H01R 43/005: {for making dustproof, splashproof, drip-proof, waterproof, or flameproof connection, coupling, or casing} - H01R 43/18: for manufacturing bases or cases for contact members - H01R 43/205: {with a panel or printed circuit board} - H05K 5/06: Hermetically-sealed casings {(specially adapted for small components H05K5/0095)} - A61B 90/50: Supports for surgical instruments, e.g. articulated arms - A61N 1/3754: {Feedthroughs} - H01R 13/5202: {Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings} - H01R 24/58: Contacts spaced along longitudinal axis of engagement - H01R 2107/00: Four or more poles - H01R 2201/12: for medicine and surgery - A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B) - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract An implantable medical device includes an enclosure sleeve and a top cap. The enclosure sleeve comprises an enclosure wall with at least a portion of the enclosure wall comprising the grade 5 titanium and having a thickness between 0.007 inches and 0.009 inches. The enclosure sleeve includes an open top end and an open bottom end that is opposite the open top end. The top cap includes a feedthrough block, a first top cap end portion, and a second top cap end portion. The first top cap end portion is configured to couple to the open top end of the enclosure sleeve, and the second top cap end portion configured to be positioned within the enclosure sleeve. ## Claims ### Claim at position 1 1-20. (canceled) ### Claim 21 An implantable medical device, comprising: an enclosure sleeve comprising a metal and defining an open top end and an open bottom end that is opposite the open top end; a circuit board within the enclosure sleeve including one or more of pulse generation circuitry and sensing circuitry; a top cap coupled to the open top end of the enclosure sleeve, the top cap including a feedthrough block configured to: pass signals generated by the pulse generation circuitry, and/or pass signals received by the sensing circuitry; a battery within the enclosure sleeve and electrically coupled to the circuit board; a bottom cap coupled to the open bottom end of the enclosure sleeve; and a bumper within the bottom cap, the bumper positioned between at least a portion of the circuit board and at least one surface of the bottom cap. ### Claim 22 (depends on 21) The implantable medical device of claim 21, wherein the bottom cap includes a different material than the enclosure sleeve. ### Claim 23 (depends on 21) The implantable medical device of claim 21, wherein the bottom cap includes a different material than the top cap. ### Claim 24 (depends on 21) The implantable medical device of claim 21, wherein the bumper is positioned between at least a portion of the battery and the at least one surface of the bottom cap. ### Claim 25 (depends on 21) The implantable medical device of claim 21, wherein the bottom cap defines a bowl shape or canoe shape configured to receive the bumper. ### Claim 26 (depends on 21) The implantable medical device of claim 21, wherein a connection between the enclosure sleeve and the bottom cap forms a hermetic seal. ### Claim 27 (depends on 21) The implantable medical device of claim 21, wherein the top cap is welded to the enclosure sleeve. ### Claim 28 (depends on 21) The implantable medical device of claim 21, wherein the circuit board includes a recharge circuit. ### Claim 29 (depends on 21) The implantable medical device of claim 21, wherein the feedthrough block includes a plurality of apertures, each aperture of the plurality of apertures configured to receive a connector pin therethrough. ### Claim 30 (depends on 21) The implantable medical device of claim 21, further comprising a connector block module assembly mounted to the top cap, the connector block module assembly including a plurality of lead connections configured to: convey signals from the pulse generation circuitry, and/or convey signals to the sensing circuitry. ### Claim 31 (depends on 30) The implantable medical device of claim 30, further comprising a connector enclosure housing the connector block module assembly, the connector enclosure including a lead passageway configured to receive a medical lead. ### Claim 32 An implantable medical device, comprising: an enclosure sleeve comprising a metal and defining an open top end and an open bottom end that is opposite the open top end; a circuit board within the enclosure sleeve including one or more of pulse generation circuitry and sensing circuitry; a top cap coupled to the open top end of the enclosure sleeve, the top cap including a feedthrough block configured to: pass signals generated by the pulse generation circuitry, and/or pass signals received by the sensing circuitry; a battery within the enclosure sleeve and electrically coupled to the circuit board; a bottom cap coupled to the open bottom end of the enclosure sleeve; and a bumper within the bottom cap, the bumper positioned between at least a portion of the battery and at least one surface of the bottom cap. ### Claim 33 (depends on 32) The implantable medical device of claim 32, wherein the bottom cap includes a different material than the enclosure sleeve. ### Claim 34 (depends on 32) The implantable medical device of claim 32, wherein the bottom cap includes a different material than the top cap. ### Claim 35 (depends on 32) The implantable medical device of claim 32, wherein the bottom cap defines a bowl shape or canoe shape configured to receive the bumper. ### Claim 36 (depends on 32) The implantable medical device of claim 32, wherein a connection between the enclosure sleeve and the bottom cap forms a hermetic seal. ### Claim 37 (depends on 32) The implantable medical device of claim 32, wherein the top cap is welded to the enclosure sleeve. ### Claim 38 (depends on 32) The implantable medical device of claim 32, wherein the feedthrough block includes a plurality of apertures, each aperture of the plurality of apertures configured to receive a connector pin therethrough. ### Claim 39 (depends on 32) The implantable medical device of claim 32, further comprising a connector block module assembly mounted to the top cap, the connector block module assembly including a plurality of lead connections configured to: convey signals from the pulse generation circuitry, and/or convey signals to the sensing circuitry. ### Claim 40 (depends on 39) The implantable medical device of claim 39, further comprising a connector enclosure housing the connector block module assembly, the connector enclosure including a lead passageway configured to receive a medical lead.