Abstract:
A prosthetic foot (70) incorporates a foot keel (71) and a calf shank (72) connected to the foot keel to form an ankle joint area of the prosthetic foot. The foot keel has forefoot and hindfoot portions and an upwardly arched midfoot portion extending between the forefoot and midfoot portions. The calf shank includes a downward convexly curved lower end which is secured to the foot keel by way of a coupling element (73). The lower end of the calf shank extends upwardly, and initially anteriorly therefore into a reversely curved portion (75) of the calf shank leading to an upstanding upper end thereof.
Abstract:
A prosthetic socket includes a recess at its distal end for receiving a prosthetic socket component such as a pin interlock deviceand a threaded opening providing access to the recess from the inside of the socket. A threaded retainer may be threadedly fastened to the threads of the opening for removably retaining the prosthetic socket component within the recess.
Abstract:
Fasteners having coordinated self-seeking conforming members for implanting into a cavity such as a hole, tube, or hard tissue defect are provided. An actuator mechanism translates applied force to conform members (60) of a plurality of members to the cavity. The fasteners may be used for implanting a prosthetic device into hard tissue of humans or animals, for anchoring a device while the device is being worked on, or for centering a device in a hole or tube, such as in well technology. The mechanism operates expanding members (60) so that they independently or dependently conform and apply a controlled and known pressure to surrounding materials.
Abstract:
A foot prosthesis has an inner spring (1) that extends from the heel area to the front area of the foot, is enclosed in a cosmetic lining (3) and is joined by a threaded bolt (6) to an adapter with a clamping connection for removably joining the foot prosthesis to a prosthesis tube (4). The following improvements of the foot prosthesis are disclosed: (a) the adapter (5) is supported by its lower face designed as a cylinder segment and provided with teeth (7) on a joining surface of the inner spring (1) that has a corresponding shape and whose teeth (8) engage the teeth (7) of the adapter (5); (b) the upper end of the adapter (5) is designed as a peg (9) upon which the prosthesis tube (4) is inserted; (c) the threaded bolt (6) is inserted through a slot (11) that extends in the longitudinal direction of the foot and has a width (b) that corresponds to the diameter (d) of the threaded bolt, and the lower end of the threaded bolt is supported on the lower side (1a) of the inner spring (1) that is also designed as a cylinder segment in the area of the slot; (d) the upper end of the threaded bolt (6) that projects above the adapter peg (9) acts upon the clamping connection; the clamping connection has a spreading element (14, 16) arranged in a ring-shaped gap between the adapter peg (9) and the prosthesis tube (4) and is actuated when the threaded bolt (6) is tightened.
Abstract:
An adjustable vertebral boby replacement implant assembly (20) includes a thin-walled cylindrical body (21) configured to span over most of the length between intact vertebrae. The cylindrical body (21) defines a hollow interior (26) with a plurality of bone-ingrowth apertures (28, 29) communicating with the interior. The assembly further includes endplates (22) configured to contact the adjacent vertebra and to engage the cylindrical body therebetween. The cylindrical body and the endplates include mating threads (32, 40, 41) to permit adjustment of the overall height of the implant. In one embodiment is a set screw (24) for locking the cylindrical body to the endplates. In another embodiment, a crimping channel (100) and notch (101) are defined in the endplates to be crimped onto the cylindrical body. A means for connecting the replacement implant to a longitudinal member is provided, which is one embodiment contemplates a clamp and screw assembly (55) and another embodiment includes an arm (94) projecting from the endplates with an opening (95) to receive a longitudinal member (105) therethrough.
Abstract:
A hip-joint endoprosthesis has a head (5) that can be medio-laterally moved parallelly to a tangent that intersects (b) the lateral edge of the proximal femoral infundibulum of the hip-joint and that follows the inner profile (b ) of the curved neck of the femur. This hip-joint endoprosthesis allows the center of rotation of the hip-joint to be reproducibly adjusted by means of an adjustable head (5). Toothed parts (12, 13, 15, 16) ensure a (fine) stepped adjustability of the displacement in the medio-lateral direction (B-B ) and of the rotation around an axis (A-A ) that is perpendicular to the plane of displacement (B-B ). Securing is ensured by a single screw (10) that braces against each other the interlocking toothed parts (12, 13, 15, 16). A coupling ball (6) mounted on a cone (17) over the head (5) of the prosthesis can be vertically adjusted by pressing-in the cone more or less deeply.
Abstract:
Tissue spacer implants and surgical methods for inserting the implants are disclosed. The implants may include a first cylindrical body with an outer surface, an axially extending hole, and a first end, a second cylindrical body with an outer surface and an axially extending hole, and an adjustment member with an outer surface, an axially extending hole, and at least one helical slot. The adjustment member axially extending hole may be adapted to receive the first cylindrical body and the adjustment member may be configured to be inserted into the axially extending hole of second cylindrical body. The implants may also include an end member for engaging the first cylindrical body and a travel mechanism for securing the first cylindrical body, adjustment member, and second cylindrical body at a desired position along the at least one helical slot to maintain a space between two bodies of tissue.
Abstract:
The invention discloses methods, devices, systems and kits for repairing, replacing and/or augmenting natural facet joint surfaces and/or facet capsules. An implantable facet joint device of one embodiment comprises a cephalad facet joint element and a caudal facet joint element. The cephalad facet joint element includes a member adapted to engage a first vertebra, and an artificial cephalad bearing member. The caudal facet joint element includes a connector adapted for fixation to a second vertebra at a fixation point and an artificial caudal bearing member adapted to engage the cephalad bearing member. The artificial caudal bearing member is adapted for a location lateral to the fixation point, hi another embodiment, an implantable facet joint device comprises a cephalad crossbar adapted to extend mediolaterally relative to a spine of a patient, the crossbar having opposite first and second ends, a connector element adapted to connect the crossbar to a first vertebra, a first artificial cephalad bearing member adapted for connection to the first end of the crossbar and adapted to engage a first caudal facet joint element connected to a second vertebra, and a second artificial cephalad bearing member adapted for connection to the second end of the crossbar and adapted to engage a second caudal facet joint element connected to the second vertebra. In yet another embodiment, an implantable facet joint device comprises a caudal cross- member adapted to extend mediolaterally relative to a spine of a patient and adapted to connect to a first vertebra, a first artificial caudal bearing member adapted for connection to the caudal cross-member, and adapted to engage a first cephalad facet joint element connected to a second vertebra, and a second artificial caudal bearing member adapted for connection to the caudal cross-member at a predetermined spacing from the first bearing member, the second bearing member being adapted to engage a second caudal facet joint element connected to the second vertebra.
Abstract:
A method and means of cranial bone flap fixation that provides, among other things, the re-opening, resetting and/or repositioning of the bone flap during neurosurgical procedures. The instrumentation central to this method and means is MR and CT- visible to aid in imaging-based localization of it. The method and means can also be used in other types of medical procedures where certain kinds of hard or firm tissue fixation is desirable according to the method of the invention.
Abstract:
A medical implant system is described for inhibiting infection associated with a joint prosthesis implant. An inventive system includes an implant body made of a biocompatible material which has a metal component disposed on an external surface of the implant body. A current is allowed to flow to the metal component, stimulating release of metal ions toxic to microbes, such as bacteria, protozoa, fungi, and viruses. One detailed system is completely surgically implantable in the patient such that no part of the system is external to the patient while the system is in use. In addition, externally controlled devices are provided which allow for modulation of implanted components.