Kinamed, Inc.

William Ralph Pratt

Vineet Kumar Sarin

Clyde Ronald Pratt

Robert Arthur Bruce

Mark Edward Apgar

Richard Lee Kendall

Roger G Carignan

Stephen F Howard

Kyle Craig Pilgeram

Margaret C Koga

Richard L Kendall

Roger C Carignan

Vineet Kumar Apt 236 Sarin

A shapeable passer for surgical cable or suture is made from a flexible tubular extrusion which includes at least one lumen arranged to receive the leading end of a surgical cable or suture, and at least one lumen arranged to contain a malleable stiffener element. The lumens and stiffener element are arranged parallel to each other and lengthwise along longitudinal axis of the extrusion, such that the malleable stiffener element enables the malleable portion of the passer to be shaped as desired. The leading ends of the lumens are preferably sealed, capped or tipped, while the trailing ends of the lumens arranged to receive the surgical cables or sutures are preferably flared to facilitate manual insertion of the cables or sutures.

Shapeable passer for surgical cable or suture

A cable tensioning system includes a reaction frame which contains a sliding platform arranged to move linearly within the frame, and a clam-type cleat attached to the sliding platform. The cleat features one or more grooves, each of which comprises two arrays of opposing ridges that converge to form a V-shape groove adapted to receive a length of cable. The ridges of each groove are tilted relative to an axis perpendicular to the groove's longitudinal axis, such that the cable is progressively captured between the ridges of the opposing arrays as it settles into the crotch of the groove when moved in a first direction, and can be disengaged from the cleat by relaxing the axial force on the cable and moving it in the opposite direction. A linear actuator mechanism may be coupled to the sliding platform to move the platform with respect to the reaction frame.

Surgical cable tensioning system

A modular system facilitates packaging, marking, handling, sterilizing, tracking, tagging and storing small components such as surgical screws. A small, suitably cylindrical or similar cell receives a screw or other component and seats the component in a predetermined orientation. A complementary cap is adapted to engage the cell from above, closing the top and retaining the component in the cell. The cap is also adapted for use as a tool for handling the cell and the component contained therein. A coupling between the cell and the cap allows the cap to be snapped securely on the cell under manual pressure; the coupling is further adapted to release on application of sufficient bending moment across the co-axis of the cell and cap.

Surgical screw carrier and method compatible with sterilization

The invention includes both a method for acquiring the position of a patient's anterior pelvic plane, and a patient positioner or holder (apparatus) for securing a patient and acquiring the position of the patient's anterior pelvic plane. The method and apparatus facilitate definition of the anterior pelvic plane (APP) in the context of computer assisted hip surgery.

Pelvic plane locator and patient positioner

The invention includes a method for tracking the human scapula during shoulder surgery, by a trackable device fixed to the coracoid process of the scapula. A device of the invention allows a trackable target to be fixed to the coracoid process by bone screws and an anchor. In one embodiment, a releasable coupling is provided between the anchor and the trackable target.

Tracking tools and method for computer-assisted shoulder replacement surgery

The invention includes a method of determining a surgical patient's pelvic position and inputting that position into a computer via a tracking system, suitable for use in navigating partial or total hip replacement surgery. The patient is first aligned with anatomical reference points in relation to corresponding locating features on a patient positioner. The positions of index features on the patient positioner are then acquired via a tracking system. Based on the positions of the index features and their known relationship to the locating features, the locations of the anatomical reference features are calculated and a pelvic plane is defined therefrom. The invention also includes a surgical tool for mounting a trackable target to a human bone, suitable for fixation to a human femur. This tool includes a removable bone clamp and a releasable coupling member, integrated with said removable bone clamp.

Non-imaging tracking tools and method for hip replacement surgery

An apparatus suitable for cleaning a surgically prepared working surface comprises a body portion adapted to supply pressurized fluid (preferably carbon dioxide gas) to the surgically prepared working surface and aspirate surface debris dislodged from the surgically prepared working surface. The apparatus further comprises a head portion adapted to constrain the supplied pressurized fluid to flow substantially along the surgically prepared working surface to dislodge debris there from when the head portion is in contact with the surgically prepared working surface. The dislodged surface debris are aspirated by the body portion. A second embodiment includes a Venturi-assisted cleaning head and is operable with or without an external source of vacuum.

Apparatus and method for cleaning a surgically prepared bone surface

A surgical tool for mounting a trackable target to a human bone, suitable for fixation to a human femur. The tool includes a removable bone clamp and a releasable coupling member which is integrated with the removable bone clamp. The releasable coupling member is arranged to mate with a compatible coupling member mounted on the trackable target to establish a predetermined spatial relationship between the bone clamp and trackable target. The releasable and compatible coupling members form a releasable connection which is mechanically constrained to re-engage only in a re-engaged position that accurately recaptures the predetermined spatial relationship.

The invention includes: a locating system; a computer, interfaced to the locating system and interpreting the positions of tracked objects in a generic computer model of a patient's hip geometry; a software module, executable on the computer, which defines the patient's pelvic plane without reference to previously obtained radiological data, by locating at least three pelvic landmarks; and a pelvic tracking marker, fixable to the pelvic bone and trackable by the locating system, to track in real time the orientation of the defined pelvic plane. Preferably, the system also includes a femoral tracking marker, securely attachable to a femur of the patient by a non-penetrating ligature and trackable by the locating system to detect changes in leg length and femoral offset.

Non-imaging, computer assisted navigation system for hip replacement surgery

The invention includes a method and system for intra-operative navigation of a joint replacement operation, without recourse to pre-operative imagery of pre-operative computerized simulations. Trackable markers and a locating system are employed to track first and second bones. A computer receives positional information regarding the trackable markers and calculates (predicts) at least one suggested combination of components of a modular implant system to produce a desired post-operative skeletal relationship.

Non-image, computer assisted navigation system for joint replacement surgery with modular implant system

A surgical instrument includes an elongated cannula having a forward expulsion end and a rearward breach end, arranged to include a bio-compatible material; a drive member arranged to urge the bio-compatible material in a reciprocating motion having two alternating phases; and a directional brake disposed to contact the bio-compatible material. The directional brake has a preferred braking direction for resisting motion of the bio-compatible material. The preferred braking direction of the directional brake is oriented to resist retreat of said material during the retreating phase and to allow advance of said material during the advancing phase, thus producing a net advance of the material to expel it from the expulsion end. The directional brake is disposed nearer to the expulsion end than the breach end of the instrument, to prevent undesired axial compression of the bio-compatible material during ejection.

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Newbury Park, CA, United States of America

William Ralph Pratt