# US 12,179,028 B2 · 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 12,179,028 B2 - Document ID: US12179028B2 - Status: Granted - Kind: B2 - Application number: 18/594,907 - Filed: 2024-03-04 - Published: 2024-06-27 - Granted: 2024-12-31 - 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/US12179028B2 ## 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 1 An implantable medical device, comprising: an enclosure sleeve comprising titanium 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 pulse generation 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; 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 the circuit board and at least one surface of the bottom cap. ### Claim 2 (depends on 1) The implantable medical device of claim 1, wherein the bottom cap includes a different material than the enclosure sleeve. ### Claim 3 (depends on 1) The implantable medical device of claim 1, wherein the bottom cap includes a different material than the top cap. ### Claim 4 (depends on 1) The implantable medical device of claim 1, wherein the bumper is positioned between the battery and the at least one surface of the bottom cap. ### Claim 5 (depends on 1) The implantable medical device of claim 1, wherein the bottom cap defines a bowl shape or canoe shape configured to receive the bumper. ### Claim 6 (depends on 1) The implantable medical device of claim 1, wherein a connection between the enclosure sleeve and the bottom cap forms a hermetic seal. ### Claim 7 (depends on 1) The implantable medical device of claim 1, wherein the top cap is welded to the enclosure sleeve. ### Claim 8 (depends on 1) The implantable medical device of claim 1, wherein the circuit board includes a recharge circuit. ### Claim 9 (depends on 1) The implantable medical device of claim 1, wherein the feedthrough block includes a plurality of apertures, each aperture of the plurality of apertures configured to receive a connector pin therethrough. ### Claim 10 (depends on 1) The implantable medical device of claim 1, 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. ### Claim 11 (depends on 10) The implantable medical device of claim 10, 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 12 An implantable medical device, comprising: an enclosure sleeve comprising titanium 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 pulse generation 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; a battery within the enclosure sleeve and electrically coupled to the circuit board; and a bottom cap coupled to the open bottom end of the enclosure sleeve; wherein the bottom cap includes a different material than each of the enclosure sleeve and the top cap. ### Claim 13 (depends on 12) The implantable medical device of claim 12, further comprising a bumper within the bottom cap, the bumper positioned between the circuit board and at least one surface of the bottom cap. ### Claim 14 (depends on 13) The implantable medical device of claim 13, wherein the bumper is positioned between the battery and the at least one surface of the bottom cap. ### Claim 15 (depends on 13) The implantable medical device of claim 13, wherein the bottom cap defines a bowl shape or canoe shape configured to receive the bumper. ### Claim 16 (depends on 12) The implantable medical device of claim 12, wherein a connection between the enclosure sleeve and the bottom cap forms a hermetic seal. ### Claim 17 (depends on 12) The implantable medical device of claim 12, wherein the top cap is welded to the enclosure sleeve. ### Claim 18 (depends on 12) The implantable medical device of claim 12, wherein the feedthrough block includes a plurality of apertures, each aperture of the plurality of apertures configured to receive a connector pin therethrough. ### Claim 19 (depends on 12) The implantable medical device of claim 12, 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. ### Claim 20 (depends on 19) The implantable medical device of claim 19, further comprising a connector enclosure housing the connector block module assembly, the connector enclosure including a lead passageway configured to receive a medical lead.