Abstract: A fixation member component, for example, employed by a relatively compact implantable medical device, includes a plurality of fingers; each finger includes a first segment extending from a fixed end of the corresponding finger, and a second segment extending from the corresponding first segment to a free end of the corresponding finger. Each first segment is elastically deformable from a relaxed to an extended condition, and from the relaxed to a compressed condition, and includes a peripheral portion and a central cut-out portion, framed by the peripheral portion. In the compressed condition, a free tip of the cut-out portion of some or all of the fingers may lodge against opposing tissue surfaces, via a spring force of the compressed fingers. Each second segment and cut-out portion is preferably configured to prevent penetration thereof within tissue at the implant site.

Abstract: A tine portion of an implantable medical device includes a hook segment and a distal segment terminated by a tissue-piercing tip, wherein the distal segment extends from a distal end of the hook segment to the tip. The hook segment, which is elastically deformable from a pre-set curvature, for example, defined by a single radius, preferably tapers from a first width thereof, in proximity to a proximal end thereof, to a smaller, second width thereof, in proximity to the distal end thereof, wherein the tip has a width that is greater than the second width of the hook segment. Alternately, the tine portion may include a hook segment that is defined by two radii and a straight section extending therebetween.

Abstract: An extractable lead and method for lead explantation is provided. The lead includes a distal element having a cavity. The cavity shaped to receive the distal end of a removal stylet. The cavity and the distal end configured to cooperate such that the distal end is secured within the cavity by rotation of the stylet. The method provides for removal of an implanted lead by securing a distal end of a removal stylet with a cavity by rotation and applying an extracting force to the lead through the removal stylet.

Abstract: A medical device is insertable and/or implantable into a body of a patient. The medical device includes a plurality of hollow and/or collapsible tines which are adapted to assist in deployment of the medical device into the body and in preventing inadvertent removal or dislodging of the medical device from the body. The tines are coupled to the medical device body at a coupling end and extend away from the device to a free end. The tines can have a number of configurations such as cylindrical or cone shaped. In addition, the cross section of the free end of the tines can be elliptical, where the free end extends to a tip. Another cross section includes a semi-circle including an open portion which can face towards or away from the medical device body. The tines also include coiled structures which can have a radial axis perpendicular to the radial axis of the medical device.

Abstract: An implantable intramedullary bone lengthening device for correction of limb length deficiencies without a need for transcutaneous connections. The implantable intramedullary bone lengthening nail has an implantable housing, an adjustment mechanism attached to the telescoping cylinder housing, and a drive assembly attached to the housing and the adjustment mechanism for transmitting an expansion force to the adjustment mechanism. The implantable housing may be sealed, encapsulating the unit. The intramedullary bone lengthening nail is inserted into the intramedullary cavity of a bone, which may have been enlarged by reaming. The implantable housing of the intramedullary nail is formed from two telescoping cylinders and is affixed at either end to the bone using pins. The adjustment mechanism is attached to both cylinders of the housing and includes a mechanism for expanding the nail and a ratcheting mechanism for regulating the expansion.