Lead assembly for implantable microstimulator
First Claim
1. An implantable medical device, comprising:
- an implantable leadless microstimulator comprising an elongated microstimulator body having a first end and an opposing second end, the microstimulator further comprising a first electrode disposed on the first end and a second electrode disposed on the opposing second end of the elongated microstimulator body, wherein the first electrode completely covers the first end of the microstimulator body; and
a first lead assembly comprisingat least one remote electrode disposed at a distal end of the first lead assembly,an insulated conductor electrically connected to the at least one remote electrode, anda first connector disposed at a proximal end of the insulated conductor, wherein the first connector is configured and arranged to receive, and substantially entirely cover, the first electrode of the microstimulator, the first connector comprising a contact to electrically connect the first electrode to the insulated conductor, wherein the first connector is configured and arranged to inhibit fluid ingress into the first connector.
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Accused Products
Abstract
A lead assembly for a small implantable medical device (a.k.a, microdevice 10) provides means to attach a remote electrode to microdevice, which means inhibit fluid ingress when microdevice is not attached to lead assembly. Microdevices may provide either or both tissue stimulation and sensing. Known microdevices include spaced apart electrodes on the outer surface of the microdevice. Lead assembly includes an insulated lead including a proximal end and a distal end, with at least one conductor therebetween; at least one electrode at the distal end of the lead and electrically connected to the at least one conductor, and a connector attached to the proximal end of the lead and adapted to be removably connectable to microdevice. Connector includes at least one contact to electrically connect at least one device electrode on microdevice to at least one conductor, thereby electrically connecting at least electrode and the at least one electrode at the distal end of lead. Lead assembly is configured to inhibit fluid ingress into the connector. A number of embodiments of the invention, capable of inhibiting fluid ingress into connector, are taught.
166 Citations
19 Claims
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1. An implantable medical device, comprising:
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an implantable leadless microstimulator comprising an elongated microstimulator body having a first end and an opposing second end, the microstimulator further comprising a first electrode disposed on the first end and a second electrode disposed on the opposing second end of the elongated microstimulator body, wherein the first electrode completely covers the first end of the microstimulator body; and a first lead assembly comprising at least one remote electrode disposed at a distal end of the first lead assembly, an insulated conductor electrically connected to the at least one remote electrode, and a first connector disposed at a proximal end of the insulated conductor, wherein the first connector is configured and arranged to receive, and substantially entirely cover, the first electrode of the microstimulator, the first connector comprising a contact to electrically connect the first electrode to the insulated conductor, wherein the first connector is configured and arranged to inhibit fluid ingress into the first connector. - View Dependent Claims (2, 3, 4, 5)
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6. An implantable medical device, comprising:
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an implantable leadless microstimulator comprising a microstimulator body and a first electrode and a second electrode disposed on opposing ends of the microstimulator body; and a first lead assembly comprising at least one remote electrode disposed at a distal end of the first lead assembly, an insulated conductor electrically connected to the at least one remote electrode, and a connector disposed at a proximal end of the insulated conductor, wherein the connector is configured and arranged to receive, and substantially entirely cover, the first electrode of the microstimulator, the connector comprising a contact to electrically connect the first electrode to the insulated conductor, wherein the connector is configured and arranged to inhibit fluid ingress into the connector, and wherein the contact is configured with at least one edge that extends at least partly around the first electrode when the microstimulator is inserted into the connector and which aides the connector in inhibiting fluid ingress into the connector when the first electrode is not present in the connector. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An implantable medical device, comprising:
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an implantable leadless microstimulator comprising a microstimulator body and a first electrode and a second electrode disposed on opposing ends of the microstimulator body; a first lead assembly comprising at least one remote electrode disposed at a distal end of the first lead assembly, an insulated conductor electrically connected to the at least one remote electrode, and a connector disposed at a proximal end of the insulated conductor, wherein the connector is configured and arranged to receive, and substantially entirely cover, the first electrode of the microstimulator, the connector comprising a contact to electrically connect the first electrode to the insulated conductor, wherein the connector is configured and arranged to inhibit fluid ingress into the connector; and a plug adapted for insertion into the connector when the first electrode is not present in the connector.
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19. An implantable medical device, comprising:
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an implantable leadless microstimulator comprising a microstimulator body and a first electrode and a second electrode disposed on opposing ends of the microstimulator body; and a lead assembly comprising at least one remote electrode disposed at a distal end of the lead assembly, an insulated conductor electrically coupled to the at least one remote electrode, a connector attached to the proximal end of the insulated conductor, the connector adapted to be removably connectable to, and substantially entirely cover, the first electrode of the microstimulator, wherein the connector comprises at least one contact to electrically couple the first electrode to the insulated conductor, and a closure defined in the connector, the closure configured and arranged to inhibit fluid ingress into a portion of the connector that receives the first electrode, wherein the closure collapses and seals when the first electrode of the microstimulator is not present in the connector.
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Specification