Abstract: A networked personal video recording (“PVR”) system couples a plurality of clients to one or more PVR media servers over a network. One or more PVR media servers include television tuners to tune television signals. A storage medium buffers the television signals to implement PVR functionality. For example, the PVR media server records television programs for clients. Clients are assigned to television tuners, and the clients display television programs received at the assigned tuner. The network transfers the buffered television signals to the clients.

Abstract: A device that automatically aligns laser beams to corresponding targets to establish a frame of reference for radiation oncology or diagnostic imaging. The device is comprised of one or more lasers and corresponding laser alignment targets, two motors for each laser to control its direction, a laser imaging device or devices, a wireline or wireless network, a computer for controlling each laser's motors, and a central computer connected to the laser imaging device(s). Each laser alignment target has crosshairs to align the laser beam to, and each laser alignment target also has unique identifying marks to distinguish it from the other lasers' targets. Each laser has two means for automatic alignment, one to adjust the laser beam positive or negative along X coordinates, and another to adjust the laser beam positive or negative along Y coordinates.

Abstract: A navigated orthopaedic guide is provided for establishing datums used to position subsequent components during an orthopaedic surgical procedure.

Abstract: The present invention provides a device for determining the shape and/or position of an anatomic surface and converting the data into machine readable form. The device includes a plurality of sensing probes positionable against an anatomic surface and a mechanism able to read the probe positions to determine the shape of the surface. The device may also include a tracking element trackable by a surgical navigation system to determine the position of the probes relative to a surgical coordinate system.

Abstract: A method and apparatus are provided for preoperatively or intraoperatively determining prosthetic implant selection and placement to achieve acceptable alignment and spacing of anatomical structures affected by the prosthetic implant and to achieve acceptable soft tissue balance proximate the prosthetic implant without requiring trial-and-error selection of implant size and placement during surgery. In one exemplary embodiment, the method and apparatus of the present invention are used to choose appropriate tibial, meniscal and femoral prosthetic components to achieve acceptable alignment, acceptable spacing of the tibia and femur, and acceptable soft tissue balance over a full range of motion of the knee.

Abstract: An apparatus for indicating a plurality of anatomical landmark locations includes a tracking device and a guide member extending from the tracking device. The guide member is configured to space the tracking device away from a first and a second one of the plurality of anatomical landmark locations, and concurrently pivotally position the tracking device based at least in part on a third one of the plurality of anatomical landmark locations. A method for facilitating acquisitions of locations of anatomical landmarks by a computer-assisted knee arthroplasty system includes concurrently abutting a guide member against at least three of the landmarks, and indicating a location of the guide member to the system concurrently with abutting the guide member against the at least three of the landmarks.

Abstract: The present invention relates to a bone-cutting guide intended to be temporarily positioned against a resected bone surface at a bone-cutting surface. The bone-cutting guide is also positioned at at least one secondary bone surface, and configured to receive a cutting member to cut the bone at the bone-cutting surface. The bone-cutting guide includes a tower and a paddle extending from the tower. The paddle is configured to be positioned at the bone-cutting surface, and has a cutting tool receiving portion configured and arranged to receive the cutting member to cut the bone at the bone-cutting surface. The bone-cutting guide also includes a base extending from the tower and configured to be positioned on the resected bone surface. The base has at least one bone-engaging surface configured and arranged to be positioned at the at least one secondary bone surface. An angle adjuster is provided for adjusting the angle between the tower and the base in the plane of the resected bone surface.

Abstract: A surgical instrument having an anchoring member securable to an anatomical structure and an implement portion which is adjustably repositionable relative to the anchoring member. The implement portion is selectively translatably adjustable and selectively rotatably adjustable relative to the anchoring member. The implement portion may be selectively translatable along and/or selectively rotatable about at least two substantially perpendicular axes. The implement portion may be selectively translatable about three substantially perpendicular axes and/or selectively rotatable about three substantially perpendicular axes. The instrument may also include at least one reference element to facilitate the registration of the implement portion in a computer implemented guidance system. The reference element may be three non-linearly positioned elements disposed on a member which is removably mounted to the instrument.

Abstract: An adjustable navigated tracking element mount and method are provided.

Abstract: The present invention provides a navigated surgical sizing guide for intraoperatively making surgical measurements.

Abstract: A system for registering an orthopedic implant in a computer assisted navigation system. The system includes a plurality of differently sized implants which may be the femoral component or hip stem of a prosthetic hip joint. A registration device is engageable with each of the implants in a predefined relative position. The registration device also includes at least one reference element registerable in the computer assisted navigation system. A second reference structure also having at least one reference element registerable in the computer assisted navigation system is detachably secured to the implant. The relative positions of the reference elements located on the registration device and second reference structure differs for each of the plurality of implants and thereby allows the navigation system to determine the nominal size of the implant. The relative position and orientation of the implant relative to the second structure can also be calibrated using the registration device.

Abstract: A universal tracking apparatus for a surgical instrument, the tracking apparatus including a support arm and tracking array. The support arm allows position adjustment of the tracking array between a number of predefined orientations relative to the instrument which are recognizeable and registerable in the navigation system. The support arm may be coupled with multiple types of surgical instruments and used to accurately define the position of the instrument in an anatomical model generated by the navigation system. The adjustable coupling between the tracking array and the support arm allows the surgeon to determine which orientation is best suited for the surgical application and also allows the surgeon to adjust the position of the tracking array during a surgical procedure without the need to re-register the tracking apparatus.

Abstract: A navigated orthopaedic guide is provided for establishing datums used to position subsequent components during an orthopaedic surgical procedure.

Abstract: A navigated orthopaedic guide is provided for establishing datums used to position subsequent components during an orthopaedic surgical procedure.

Abstract: A navigated stemmed orthopaedic implant inserter and method are presented for use with a surgical navigation system.

Abstract: The present invention provides an orthopaedic component inserter usable with a surgical navigation system.

Abstract: A networked personal video recording (“PVR”) system couples a plurality of clients to one or more PVR media servers over a network. One or more PVR media servers include television tuners to tune television signals. A storage medium buffers the television signals to implement PVR functionality. For example, the PVR media server records television programs for clients. Clients are assigned to television tuners, and the clients display television programs received at the assigned tuner. The network transfers the buffered television signals to the clients.

Abstract: A networked personal video recording (“PVR”) system couples a plurality of clients to one or more PVR media servers over a network. One or more PVR media servers include television tuners to tune television signals. A storage medium buffers the television signals to implement PVR functionality. For example, the PVR media server records television programs for clients. Clients are assigned to television tuners, and the clients display television programs received at the assigned tuner. The network transfers the buffered television signals to the clients.

Abstract: A networked personal video recording (“PVR”) system couples a plurality of clients to one or more PVR media servers over a network. One or more PVR media servers include television tuners to tune television signals. A storage medium buffers the television signals to implement PVR functionality. For example, the PVR media server records television programs for clients. Clients are assigned to television tuners, and the clients display television programs received at the assigned tuner. The network transfers the buffered television signals to the clients.

Abstract: A networked personal video recording (“PVR”) system couples a plurality of clients to one or more PVR media servers over a network. One or more PVR media servers include television tuners to tune television signals. A storage medium buffers the television signals to implement PVR functionality. For example, the PVR media server records television programs for clients. Clients are assigned to television tuners, and the clients display television programs received at the assigned tuner. The network transfers the buffered television signals to the clients.