Fixation device for implantable microdevices
First Claim
1. An implantable device including a fixation device with an implantable microdevice for stimulating tissue, said microdevice comprising a case, comprising:
- a flexible, arced grasping member comprising a sheet of material having a first edge and a second edge, said sheet being curved into an unclosed cylindrical shape with said first and second edges being separated by an open space running a full length of said cylindrical shape;
a holder configured to hold said microdevice, said holder being disposed along a length of said first edge of said sheet; and
said implantable microdevice in said holder configured to deliver a stimulus to said tissue, said microdevice being secured in position relative to said tissue by said grasping member and said holder.
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Accused Products
Abstract
A fixation device fixes the position of an implantable microminiature device residing proximally to a target site such as a nerve or a muscle. In one embodiment, the device comprises a sheath and a means for attaching the device to adjacent tissue. The means for attaching may be any one of several embodiments including one or more grasping members, a combination of grasping members and one or more helices, or an extension adapted to accept a suture. In another embodiment, the fixation device comprises an assembly residing in the implantation pathway, behind the stimulation device, thus preventing retreat of the stimulation device in the pathway. In a preferred use, the fixation device fixes the position of a microstimulator component of a Peripheral Nerve Stimulation (PNS) system.
409 Citations
22 Claims
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1. An implantable device including a fixation device with an implantable microdevice for stimulating tissue, said microdevice comprising a case, comprising:
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a flexible, arced grasping member comprising a sheet of material having a first edge and a second edge, said sheet being curved into an unclosed cylindrical shape with said first and second edges being separated by an open space running a full length of said cylindrical shape; a holder configured to hold said microdevice, said holder being disposed along a length of said first edge of said sheet; and said implantable microdevice in said holder configured to deliver a stimulus to said tissue, said microdevice being secured in position relative to said tissue by said grasping member and said holder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of using an implantable microdevice with a fixation device comprising a holder for the microdevice disposed on a flexible arced member having an opening along a length thereof for engaging body tissue, comprising;
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placing the body tissue in a space within and defined by the arced member by passing the body tissue through the opening running along the length of the arced member such that the arced member is placed around the body tissue; and placing the microdevice in the holder, wherein the arced member is placed on the body tissue before the microdevice is placed in the holder.
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19. A system for an implantable microdevice, comprising:
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means for grasping an elongated body tissue, the means having an opening along a length thereof so that the means for grasping can be slipped around the elongated body tissue by passing the tissue through the opening such that the means for grasping curls around the tissue; and means for holding the microdevice disposed on the means for grasping. - View Dependent Claims (20, 21, 22)
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Specification