Intravascular medical device

• US 8,352,028 B2
• Filed: 04/26/2010
• Issued: 01/08/2013
• Est. Priority Date: 03/26/2010
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Wenger, William K
• Primary Examiner(s): Layno, Carl H
• Assistant Examiner(s): Stice, Paula J
• Application Number:
  US12/767,176
• Publication Number:
  US 20110238077A1
• Time in Patent Office: 988 Days
• Field of Search: 607/9, 607/36, 607115-116, 607/119, 607126-128, 607/131
• US Class Current: 607/9
• CPC Class Codes: A61B 17/3468 for implanting or removing devices, e.g. prostheses, implants, seeds, wires devices for implanting seeds A61M37/0069
• CPC Class Codes: A61N 1/0573 chacterised by means penetrating the heart tissue, e.g. helix needle or hook
• CPC Class Codes: A61N 1/37205 Microstimulators, e.g. implantable through a cannula
• CPC Class Codes: A61N 1/37512 Pacemakers
• CPC Class Codes: A61N 1/37516 Intravascular implants
• CPC Class Codes: A61N 1/37518 Anchoring of the implants, e.g. fixation
• CPC Class Codes: A61N 1/3756 Casings with electrodes thereon, e.g. leadless stimulators
• CPC Class Codes: A61N 2001/058 Fixing tools
• CPC Class Codes: A61N 2001/0585 Coronary sinus electrodes

Abstract

An implantable medical device system, including an implantable medical device and an associated implant tool. The device has a hermetic housing containing a power source and electronic circuitry. One or more tines are mounted to the housing movable from a first position extending away from the housing to a second position adjacent the housing. The device is provided with a rotational fixation mechanism. The Implant tool includes an elongated sheath sized to receive the device and provided with internal grooves sized to engage with the tines when the tines are located in their second position. The implant tool may further include a push tool located with the sheath and movable within the sheath to advance the device distally out of the sheath. The sheath may be provided with a closed distal end openable by passage of the device therethrough.

Claims

1. An implantable medical device system, comprising:

an implantable medical device comprising;

a hermetic housing containing a power source and electronic circuitry, one or more tines mounted to the housing movable from a first position extending away from the housing to a second position adjacent the housing and a rotational fixation mechanism; and

an implant tool, comprising an elongated sheath sized to receive the device and provided with internal grooves sized to engage with the tines when the tines are located in their second position; and

wherein the implant tool further comprises a push tool located with the sheath and movable within the sheath to advance the device distally out of the sheath.

2. A system according to claim 1 wherein the push tool comprises means for releaseably engaging the medical device.

3. An implantable medical device system, comprising:

an implantable medical device comprising;

a hermetic housing containing a power source and electronic circuitry, one or more tines mounted to the housing movable from a first position extending away from the housing to a second position adjacent the housing and a rotational fixation mechanism; and

an implant tool, comprising an elongated sheath sized to receive the device and provided with internal grooves sized to engage with the tines when the tines are located in their second position; and

wherein the sheath comprises a closed distal end openable by passage of the medical device therethrough.

4. A system according to claim 3 wherein the distal end of the sheath comprises weakened zones between adjacent portions of the distal end.

5. A method of implanting a medical device system, comprising:

inserting an implantable medical device into an implant tool, wherein;

the medical device comprises a hermetic housing containing a power source and electronic circuitry, one or more tines mounted to the housing movable from a first position extending away from the housing to a second position adjacent the housing and a rotational fixation mechanism; and

the implant tool comprises an elongated sheath sized to receive the device and provided with internal grooves sized to engage with the tines when the tines are located in their second position, wherein the implant tool further comprises a push tool located with the sheath and movable within the sheath to advance the device medical distally out of the sheath; and

advancing the device distally out of the sheath using the push tool.

6. A method according to claim 5, wherein the push tool comprises means for releaseably engaging the medical device, comprising disengaging the device from the push tool.

7. A method of implanting a medical device system, comprising:

inserting an implantable medical device into an implant tool, wherein;

the medical device comprises a hermetic housing containing a power source and electronic circuitry, one or more tines mounted to the housing movable from a first position extending away from the housing to a second position adjacent the housing and a rotational fixation mechanism; and

the implant tool comprises an elongated sheath sized to receive the device and provided with internal grooves sized to engage with the tines when the tines are located in their second position; and

advancing the medical device to a desired implant location using the implant tool; and

wherein the sheath comprises a closed distal end openable by passage of the medical device therethrough, comprising opening the distal end by passage of the device therethrough.

8. A method according to claim 7, wherein the distal end of the sheath comprises weakened zones between adjacent portions of the distal end, comprising separating the adjacent portions of the distal end by passage of the device therethrough.