Patent application number | Description | Published |
20080208081 | System and Method For Determining Tibial Rotation - A system and method for determining tibial rotation is disclosed. The system includes a first fiducial, a second fiducial, a position and orientation sensor, a computer, and a monitor. The first fiducial is connected to a first part, and the second fiducial is connected to a second part. The position and orientation sensor tracks the first fiducial and the second fiducial. The computer has a memory, a processor, and an input/output device. The input/output device receives data from the position and orientation sensor. The processor processes the data to identify a first axis of the first part and a second axis of the second part. The processor constructs a reference plane through the second axis and orthogonal to the first axis. The monitor is connected to the input/output device and displays a rendering of the reference plane. | 08-28-2008 |
20090306679 | METHOD AND APPARATUS FOR DETERMINING ACETABULAR COMPONENT POSITIONING - An instrument for establishing orientation of a pelvic prosthesis comprises a tri-pod having an angularly adjustable guide rod on it. The tips of the legs define a plane, and the guide rod is set by the surgeon to a defined orientation with respect to this plane on the basis of preoperative studies. In use, two of the legs of the instrument are positioned by the surgeon at defined anatomical locations on the pelvis (e.g., a point in the region of the posterior/inferior acetabulum and a point on the anterior superior iliac spine). The third leg then lands on the pelvis at a point determined by the position of the first two points, as well as by the separations between the third leg and the other two legs. The separations are adjustable, but are preferably fixed percentages of the separation between the first and second legs. The position of the guide rod then defines with respect to the actual pelvis the direction for insertion of a prosthesis. | 12-10-2009 |
20100010506 | Method of Computer-Assisted Ligament Balancing and Component Placement in Total Knee Arthroplasty - Systems, methods and processes for computer-assisted soft tissue balancing, including ligament balancing, determining surgical cuts, and positioning or placement of the components of the prosthetic knee during TKR. The improved methods, systems, and processes consider and correlate anatomical landmarks and dynamic interactions of the knee bones and soft tissues. The improved methods, systems and processes resolve several problems related to the prosthetic knee component positioning and soft-tissue balancing during computer-assisted TKR. The improved methods, systems and processes are flexible and versatile, provide reliable recommendations to the surgeon, and improve restoration of the knee function and patient recovery. | 01-14-2010 |
20110077467 | Surgical Retractor with Impactor - A surgical retractor comprising a retractor body having a site portion and handle portion, and an impactor body on the retractor body. The impactor body is positioned and configured for use in impacting the site portion of the surgical site. An impaction axis of the impaction body is preferably substantially aligned with an axis of the site portion of the impactor body. The impactor body is preferably attached to the retractor body at a junction between the site portion and the handle portion of the retractor body. In one embodiment, the impactor portion is configured to selectively mate with an impactor extension member to thereby optionally receive direct impaction on the impactor portion or indirect impaction through the impactor extension member. | 03-31-2011 |
20110112589 | SYSTEM AND METHOD FOR FACILITATING HIP SURGERY - A system and method for use during hip surgery includes a position frame that is removably secured to the patient's femur. The system further includes a tracking unit and navigation engine that establish a pelvic coordinate system and, with the patient's leg placed in a predetermined orientation, capture the location of the femoral position frame within the pelvic coordinate system. The system further includes an image generator configured to display one or more images for directing the surgeon to return the patient's leg to the predetermined orientation following a trial reduction based upon the previously captured position. A leg change determination engine compares the current, post-reconstruction position of the femoral position tracking frame with the previously captured, pre-reconstruction position to derive leg length, offset, and anterior-posterior change values. The change values are then provided to the surgeon for evaluating the suitability of the trial reduction. | 05-12-2011 |
20130006255 | METHOD AND APPARATUS FOR DETERMINING ACETABULAR COMPONENT POSITIONING - An instrument for establishing orientation of a pelvic prosthesis comprises a tripod having an angularly adjustable guide rod on it. The tips of the legs define a plane, and the guide rod is set by the surgeon to a defined orientation with respect to this plane on the basis of preoperative studies. In use, two of the legs of the instrument are positioned by the surgeon at defined anatomical locations on the pelvis (e.g., a point in the region of the posterior/inferior acetabulum and a point on the anterior superior iliac spine). The third leg then lands on the pelvis at a point determined by the position of the first two points, as well as by the separations between the third leg and the other two legs. The position of the guide rod then defines with respect to the actual pelvis the direction for insertion of a prosthesis. | 01-03-2013 |
20130018430 | METHOD AND APPARATUS FOR DETERMINING ACETABULAR COMPONENT POSITIONING - An instrument for establishing orientation of a pelvic prosthesis comprises a tripod having an angularly adjustable guide rod on it. The tips of the legs define a plane, and the guide rod is set by the surgeon to a defined orientation with respect to this plane on the basis of preoperative studies. In use, two of the legs of the instrument are positioned by the surgeon at defined anatomical locations on the pelvis (e.g., a point in the region of the posterior/inferior acetabulum and a point on the anterior superior iliac spine). The third leg then lands on the pelvis at a point determined by the position of the first two points, as well as by the separations between the third leg and the other two legs. The position of the guide rod then defines with respect to the actual pelvis the direction for insertion of a prosthesis. | 01-17-2013 |
20130018666 | SURGICAL PLANNING SYSTEM AND METHOD - A system and method receive a request for a patient-specific surgical plan, create the requested plan, and provide it to a surgeon. A Planning server may receive information regarding a patient, such as one or more files or objects, such as an image of the part of the patient's anatomy that is to be operated on, and an order from a surgeon for a surgical plan. A Plan Development client may include a surgical planning module that accesses the digital image from the Planning Server, and creates a computer-generated, three-dimensional model of the patient anatomy. The planning module of the Plan Development client also may create an electronic surgical plan, and may transmit the plan to the Planning server. The ordering surgeon may be notified of the availability of the plan, and may access the plan stored at the Planning server through a surgeon client. The ordering surgeon may utilize the remotely generated surgical plan during the surgical procedure on the patient. | 01-17-2013 |
20130164075 | ADAPTER FOR ACETABULAR COMPONENT POSITIONING - An adapter for a tripodal stereotactic reference frame for use in arthroplastic surgery mounts a third leg of the frame at an angle with respect to the other two legs to facilitate use of said frame with varying surgical exposures. | 06-27-2013 |
20130165941 | GUIDE FOR ACETABULAR COMPONENT POSITIONING - Apparatus for aligning a surgical instrument, such as an acetabular cup inserter, with a direction guide that defines an orientation in space for insertion of the cup. The apparatus comprises a parallel guide having a first arm for alignment with the direction guide and a second arm spaced from the first arm but maintained in parallel relationship with it. The cup inserter can be aligned with the first arm by aligning it with the second arm. | 06-27-2013 |
20140255084 | ADAPTER FOR ACETABULAR COMPONENT POSITIONING - An adapter for a tripodal stereotactic reference frame for use in arthroplastic surgery mounts a third leg of the frame at an angle with respect to the other two legs to facilitate use of said frame with varying surgical exposures. | 09-11-2014 |
20140358151 | METHOD AND APPARATUS FOR PERFORMING ANTERIOR HIP SURGERY - An apparatus registers a patient's pelvis during surgery by establishing a patient-specific, supine pelvic reference plane. The apparatus may include an elongated support arm having three legs, at least two of which may be moveable along the arm. The first leg may contact the patient's right anterior superior iliac spines (ASIS), the second leg may contact the left ASIS, and the third leg may contact an anterior aspect of the ischium of the patient's pelvis below the acetabulum of the hip being operated on. The distances between the first leg and the second and third legs may be determined preoperatively so that the legs dock to the desired points. The apparatus may further include a direction indicator configured to point in a desired orientation for inserting an acetabular cup component in the patient's acetabulum. | 12-04-2014 |