| Patent application number | Description | Published |
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| 20080312529 | COMPUTER-ASSISTED SURGERY SYSTEM AND METHOD - There is described a system and a method for assisting a user manipulating an object during a surgery, the method comprising: tracking the object in a sterile field in which surgery is being performed at a location using a tracking device which generates tracking data; processing the tracking data using a processing device located outside the sterile field to generate position and orientation information related to the object; and sending the position and orientation information related to the object to a displaying device positioned in the sterile field adjacent to the location at which the surgery is being performed, for display to the user. | 12-18-2008 |
| 20090087052 | CONSTRUCTION OF A NON-IMAGED VIEW OF AN OBJECT USING ACQUIRED IMAGES - There is described a method and a system for generating a non-imaged plane view of an anatomical part for assisting a surgery. A model of the anatomical part is provided, comprising features and dimension parameters. A first plane view of the anatomical part is obtained. Features are identified in the first plane view. The dimension parameters are measured from the features identified. The model is displayed in the non-imaged plane view such that the model is dimensioned with the measured dimension parameters. A position and orientation of a surgical object is then tracked relative to the anatomical part while a user navigates said surgical object in space and a representation of the surgical object to be overlaid in register on at least one the first plane view and/or the non-imaged view is generated. | 04-02-2009 |
| 20090247863 | TRACKING SYSTEM AND METHOD - A tracking system is provided for tracking an objects. A first and a second trackable member each have an inertial sensor unit producing at least orientation-based data. A processing unit receives the orientation-based data from the trackable members. The processing unit has an orientation calculator calculating an orientation of the second trackable member with respect to the first trackable member from the orientation-based data of both said trackable members, whereby the processing unit calculates an orientation of the objects. A method is also provided. | 10-01-2009 |
| 20090248044 | METHOD AND SYSTEM FOR PLANNING/GUIDING ALTERATIONS TO A BONE - A computer-assisted surgery system for planning/guiding alterations to a bone in surgery, comprises a trackable member adapted to be secured to the bone. The trackable member has a first inertial sensor unit producing orientation-based data for at least two degrees of freedom in orientation of the trackable member A positioning block is adapted to be secured to the bone, with at least an orientation of the positioning block being adjustable once the positioning block is secured to the bone to reach a selected orientation at which the positioning block is used to guide tools in altering the bone. The positioning block has a second inertial sensor unit producing orientation-based data for at least two degrees of freedom in orientation of the positioning block. A processing system providing an orientation reference associating the bone to the trackable member comprises a signal interpreter for determining an orientation of the trackable member and of the positioning block from the orientation-based data. A parameter calculator calculates alteration parameters related to an actual orientation of the positioning block with respect to the bone as a function of the orientation reference and of the orientation of the positioning block. | 10-01-2009 |
| 20100121334 | UNIVERSAL POSITIONING DEVICE FOR ORTHOPEDIC SURGERY AND METHOD OF USE THEREOF - A positioning device assembly for positioning a tool guide block for use in an orthopedic surgery on a bone element includes a positioning device having a block body with a reference surface adapted to abut the bone element, and first and second adjustment mechanisms that are independently operable. The first adjustment mechanism permits rotation of a tool guide block about a medial-lateral extending axis such as to provide flexion-extension angle adjustment and the second adjustment mechanism permits rotation of a tool guide block about an anterior-posterior extending axis such as to provide varus-valgus angle adjustment. The second adjustment mechanism includes both a coarse and a fine adjustment mechanism integral therewith. A tool guide block assembly mounted to the positioning device, the tool guide block assembly including a platform portion which is engaged to the block body of the positioning device and the tool guide block which is releasably engaged with the platform. | 05-13-2010 |
| 20100192961 | TRACKABLE REFERENCE DEVICE FOR COMPUTER-ASSISTED SURGERY - A surgical reference device for use with a computer-assisted surgery system comprises an engaging member adapted to engage directly on soft tissue of a body part such that substantially no relative movement is possible between the engaging member and a bone element of the body part. A trackable member is attached to the engaging member and comprises a detectable element for being located and tracked in three-dimensional space by the computer-assisted surgery system to measure a position and an orientation of the trackable member in time, whereby the bone element is tracked as a function of the position and orientation of the trackable member. A method for tracking a position and an orientation of a bone element using a computer-assisted surgery system is also provided. | 08-05-2010 |
| 20110218458 | MEMS-BASED METHOD AND SYSTEM FOR TRACKING A FEMORAL FRAME OF REFERENCE - A system for tracking a femoral frame of reference in computer-assisted surgery comprises a sensor unit. The sensor unit is adapted to be secured to the femur. The sensor unit comprises accelerometer and gyroscope sensors that produce orientation data. A processing unit receives gyroscope and accelerometer data. The processing unit comprises a gyroscope-data calculator to provide calculated acceleration data resulting from movements of the femur, an accelerometer-data calculator to calculate measured acceleration data resulting from movements of the femur, and an acceleration comparator to relate an orientation of the sensor unit to the femur to define a femoral frame of reference. The femoral frame of reference is defined from the comparison between the calculated and the measured acceleration data. A sensor orientation interface provides orientation data for the femur from a tracking of the femoral frame of reference. A method for tracking a femoral frame of reference is also provided. | 09-08-2011 |
| 20110251835 | DEVICE, METHOD AND SYSTEM FOR DIGITIZING POSITION AND ORIENTATION INFORMATION OF HIP JOINT IMPLANT COMPONENTS | 10-13-2011 |
| 20120010500 | CAS SYSTEM FOR CONDYLE MEASUREMENT - A computer assisted surgery system for conducting orthopedic surgery on a knee joint includes a condyle digitizer having a posterior condyle abutment surface defining a first plane and a distal condyle abutment surface defining a second plane perpendicular to the first plane, and a trackable member which is locatable and trackable in three dimensional space by the computer assisted surgery system to define at least orientation of the condyle digitizer in real time. A computer determines a most remote reference point of the femur of the knee joint lying within at least one of the first and second planes when the condyle digitizer is abutted against condyles of the femur such that the posterior condyle abutment surface abuts a posterior side of the condyles and the distal condyle abutment surface abuts a distal side of the condyles. | 01-12-2012 |
| Patent application number | Description | Published |
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| 20090206906 | SIGNAL SPLITTER - A controllable-gain circuit (TI, Rt, TS | 08-20-2009 |
| 20090221249 | METHOD AND ARRANGEMENT FOR SIGNAL PROCESSING IN A RECEIVER THAT CAN BE TUNED TO DIFFERENT CARRIERS - A method and circuit for signal processing in a receiver that can be tuned to different carriers, the method determining the energy of the adjacent carriers N+1 and N−1, wherein a carrier N contains a signal of interest and the receiver is tuned to it, from the digital signal, in that the energy value of the carriers N+1 and N−1 determined are compared with a threshold value, and in the case where the threshold value is exceeded, a frequency shift of the signal by +Δf or −Δf is effected in the second method step prior to the filtering, and the frequency shift thus produced is reversed by a frequency shift by −Δf or +Δf prior to the filtering, and the signal is decoded. | 09-03-2009 |
| 20110212698 | SYSTEM AND METHOD FOR ADAPTIVE RADIO FREQUENCY FILTERING - A system and method provide adaptive filtering of radio frequency (RF) signals. Multiple signals are received in a predetermined RF spectrum, the signals including a desired signal and multiple potentially interfering signals. A first signal of the potentially interfering signals is down-converted to a baseband signal, and a power of the baseband signal is determined. When the power exceeds a predetermined threshold power, a first notch filter, corresponding to a frequency of the first signal, is activated. | 09-01-2011 |
