Patents by Inventor Ramnada CHAV
Ramnada CHAV has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240148439Abstract: A surgical assistance system includes a processing unit; and a non-transitory computer-readable memory communicatively coupled to the processing unit and comprising computer-readable program instructions executable by the processing unit for: obtaining a video feed of a surgical procedure and monitoring the surgical procedure from the video feed; detecting, from an image processing of the video feed, a condition requiring a deviation from the surgical procedure, the deviation being defined as being outside of a standard surgical flow; and outputting a recommendation of deviation by intra-operatively providing the recommendation to an operator of the surgical procedure.Type: ApplicationFiled: January 12, 2024Publication date: May 9, 2024Inventors: Pierre COUTURE, Ramnada CHAV, Sebastien PARRATTE, Kevin UNGER
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Patent number: 11903652Abstract: A surgical assistance system includes a processing unit; and a non-transitory computer-readable memory communicatively coupled to the processing unit and comprising computer-readable program instructions executable by the processing unit for: obtaining a video feed of a surgical procedure and monitoring the surgical procedure from the video feed; detecting, from an image processing of the video feed, a condition requiring a deviation from the surgical procedure, the deviation being defined as being outside of a standard surgical flow; and outputting a recommendation of deviation by intra-operatively providing the recommendation to an operator of the surgical procedure.Type: GrantFiled: October 30, 2020Date of Patent: February 20, 2024Assignee: ORTHOSOFT ULCInventors: Pierre Couture, Ramnada Chav, Sebastien Parratte, Kevin Unger
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Publication number: 20230181259Abstract: A system for sizing an implant for a patient pre-operatively comprisies a processor unit. A non-transitory computer-readable memory may be communicatively coupled to the processing unit and comprising computer-readable program instructions executable by the processing unit for obtaining at least one radiographic patient image of at least one patient bone with a scale marker relative to the bone, the scale marker having a known geometry, setting a scale of the at least one radiographic patient image using the known geometry of the scale marker, generating a three-dimensional bone model representative of the at least one patient bone using the at least one radiographic patient image and the scale, identifying an implant size and/or an implant model using implant models and dimensions of the three-dimensional bone model based on said scale, and outputting the implant size and/or the implant model for the patient.Type: ApplicationFiled: February 8, 2023Publication date: June 15, 2023Inventors: Jean-Sebastien MERETTE, Ramnada CHAV
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Publication number: 20230172667Abstract: A system for creating at least one model of a bone and implanted implant comprises a processing unit; and a non-transitory computer-readable memory communicatively coupled to the processing unit and comprising computer-readable program instructions executable by the processing unit for: obtaining at least one image of at least part of a bone and of an implanted implant on the bone, the at least one image being patient specific, obtaining a virtual model of the implanted implant using an identity of the implanted implant, overlaying the virtual model of the implanted implant on the at least one image to determine a relative orientation of the implanted implant relative to the bone in the at least one image, and generating and outputting a current bone and implant model using the at least one image, the virtual model of the implanted implant and the overlaying.Type: ApplicationFiled: January 13, 2023Publication date: June 8, 2023Inventors: Ramnada CHAV, Jean-Sebastien MERETTE, Tin NGUYEN, Karine DUVAL, Pierre COUTURE
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Patent number: 11583341Abstract: A system for sizing an implant for a patient pre-operatively comprises a processor unit. A non-transitory computer-readable memory may be communicatively coupled to the processing unit and comprising computer-readable program instructions executable by the processing unit for obtaining at least one radiographic patient image of at least one patient bone with a scale marker relative to the bone, the scale marker having a known geometry, setting a scale of the at least one radiographic patient image using the known geometry of the scale marker, generating a three-dimensional bone model representative of the at least one patient bone using the at least one radiographic patient image and the scale, identifying an implant size and/or an implant model using implant models and dimensions of the three-dimensional bone model based on said scale, and outputting the implant size and/or the implant model for the patient.Type: GrantFiled: October 7, 2020Date of Patent: February 21, 2023Assignee: ORTHOSOFT ULCInventors: Jean-Sebastien Merette, Ramnada Chav
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Patent number: 11576725Abstract: A system for creating at least one model of a bone and implanted implant comprises a processing unit; and a non-transitory computer-readable memory communicatively coupled to the processing unit and comprising computer-readable program instructions executable by the processing unit for: obtaining at least one image of at least part of a bone and of an implanted implant on the bone, the at least one image being patient specific, obtaining a virtual model of the implanted implant using an identity of the implanted implant, overlaying the virtual model of the implanted implant on the at least one image to determine a relative orientation of the implanted implant relative to the bone in the at least one image, and generating and outputting a current bone and implant model using the at least one image, the virtual model of the implanted implant and the overlaying.Type: GrantFiled: December 12, 2018Date of Patent: February 14, 2023Assignee: ORTHOSOFT ULCInventors: Ramnada Chav, Jean-Sebastien Merette, Tin Nguyen, Karine Duval, Pierre Couture
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Publication number: 20220015841Abstract: A method or system for storing an instrument, such as in a sterile environment. For example, a surgical robotic system may include a surgical robotic arm and a sterilization unit enclosing the sterile environment and storing the instrument. A processor may be used to determine that the instrument is needed (e.g., during a surgical procedure or portion of a surgical procedure or for a future surgical procedure or portion of a future surgical procedure). The processor may provide access to the instrument.Type: ApplicationFiled: July 15, 2021Publication date: January 20, 2022Inventors: Ramnada Chav, Pierre Couture
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Publication number: 20220020219Abstract: A method or system for using an augmented reality device may include displaying information in a surgical field. A method may include receiving an indication of a location of a landmark on a bone of a patient, retrieving a planned location of the landmark on the bone of the patient and receiving information corresponding to the location or the planned location. The location or the planned location may be displayed as a virtual indication using an augmented reality display of the augmented reality device, for example while permitting the surgical field to be viewed through the augmented reality display.Type: ApplicationFiled: July 15, 2021Publication date: January 20, 2022Inventors: Ramnada Chav, Pierre Couture
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Publication number: 20210177526Abstract: A method for spine tracking in computer-assisted surgery, the method includes: obtaining, at a computer-assisted surgical system, at least one image of at least part of the spine and at least one surgical device; determining, at the computer-assisted surgical system, a three-dimensional position and orientation of the at least one surgical device relative to the spine from the at least one image to create a referential system; tracking, at the computer-assisted surgical system, the at least one surgical device altering a first vertebra of the spine for attachment of a spinal screw to the first vertebra, in the referential system; and tracking, at the computer-assisted surgical system, the spine in the referential system with a trackable reference attached to the spinal screw of the first vertebra.Type: ApplicationFiled: December 16, 2020Publication date: June 17, 2021Inventors: Andreanne GOYETTE, Ramnada CHAV, Karine DUVAL
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Publication number: 20210128250Abstract: There is described a system for tracking at least one tool relative to a bone in computer-assisted surgery.Type: ApplicationFiled: November 4, 2020Publication date: May 6, 2021Inventor: Ramnada CHAV
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Publication number: 20210128244Abstract: A surgical assistance system includes a processing unit; and a non-transitory computer-readable memory communicatively coupled to the processing unit and comprising computer-readable program instructions executable by the processing unit for: obtaining a video feed of a surgical procedure and monitoring the surgical procedure from the video feed; detecting, from an image processing of the video feed, a condition requiring a deviation from the surgical procedure, the deviation being defined as being outside of a standard surgical flow; and outputting a recommendation of deviation by intra-operatively providing the recommendation to an operator of the surgical procedure.Type: ApplicationFiled: October 30, 2020Publication date: May 6, 2021Inventors: Pierre COUTURE, Ramnada CHAV, Sebastien PARRATTE, Kevin UNGER
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Publication number: 20210015556Abstract: A system for sizing an implant for a patient pre-operatively comprises a processor unit. A non-transitory computer-readable memory may be communicatively coupled to the processing unit and comprising computer-readable program instructions executable by the processing unit for obtaining at least one radiographic patient image of at least one patient bone with a scale marker relative to the bone, the scale marker having a known geometry, setting a scale of the at least one radiographic patient image using the known geometry of the scale marker, generating a three-dimensional bone model representative of the at least one patient bone using the at least one radiographic patient image and the scale, identifying an implant size and/or an implant model using implant models and dimensions of the three-dimensional bone model based on said scale, and outputting the implant size and/or the implant model for the patient.Type: ApplicationFiled: October 7, 2020Publication date: January 21, 2021Inventors: Jean-Sebastien MERETTE, Ramnada CHAV
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Patent number: 10828110Abstract: A system for sizing an implant for a patient pre-operatively comprises a processor unit. A non-transitory computer-readable memory may be communicatively coupled to the processing unit and comprising computer-readable program instructions executable by the processing unit for obtaining at least one radiographic patient image of at least one patient bone with a scale marker relative to the bone, the scale marker having a known geometry, setting a scale of the at least one radiographic patient image using the known geometry of the scale marker, generating a three-dimensional bone model representative of the at least one patient bone using the at least one radiographic patient image and the scale, identifying an implant size and/or an implant model using implant models and dimensions of the three-dimensional bone model based on said scale, and outputting the implant size and/or the implant model for the patient.Type: GrantFiled: October 10, 2018Date of Patent: November 10, 2020Assignee: ORTHOSOFT ULCInventors: Jean-Sebastien Merette, Ramnada Chav
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Publication number: 20190175277Abstract: A system for creating at least one model of a bone and implanted implant comprises a processing unit; and a non-transitory computer-readable memory communicatively coupled to the processing unit and comprising computer-readable program instructions executable by the processing unit for: obtaining at least one image of at least part of a bone and of an implanted implant on the bone, the at least one image being patient specific, obtaining a virtual model of the implanted implant using an identity of the implanted implant, overlaying the virtual model of the implanted implant on the at least one image to determine a relative orientation of the implanted implant relative to the bone in the at least one image, and generating and outputting a current bone and implant model using the at least one image, the virtual model of the implanted implant and the overlaying.Type: ApplicationFiled: December 12, 2018Publication date: June 13, 2019Inventors: Ramnada CHAV, Jean-Sebastien MERETTE, Tin NGUYEN, Karine DUVAL, Pierre COUTURE
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Patent number: 9142020Abstract: Method for reconstruction of a three-dimensional model of an osteo-articular structure of a patient, wherein a) bi-dimensional patient-specific image data (41) of said structure is provided; (d) a preliminary solution, corresponding to a previously established solution model of the structure, is provided (42) from a base (21), said preliminary solution comprising a priori knowledge of the corresponding structure, previously established from structures of the same type, said preliminary solution comprising surface data describing the coordinates of the surface of the solution model, and bulk data describing at least one characteristic of the inside of the solution model; the preliminary solution is modified (42?, 43, 44, 46, 47, 48) to be brought in concordance with said patient-specific image data.Type: GrantFiled: October 31, 2008Date of Patent: September 22, 2015Assignees: Ecole National Superieure D'Arts Et Metiers (ENSAM), Ecole De Technologies SuperieureInventors: Jacques A. DeGuise, Benoit Godbout, Thierry Cresson, Ramnada Chav, Dominic Branchaud, Wafa Skalli, David Mitton
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Publication number: 20100241405Abstract: Method for reconstruction of a three-dimensional model of an osteo-articular structure of a patient, wherein a) bi-dimensional patient-specific image data (41) of said structure is provided; (d) a preliminary solution, corresponding to a previously established solution model of the structure, is provided (42) from a base (21), said preliminary solution comprising a priori knowledge of the corresponding structure, previously established from structures of the same type, said preliminary solution comprising surface data describing the coordinates of the surface of the solution model, and bulk data describing at least one characteristic of the inside of the solution model; the preliminary solution is modified (42?, 43, 44, 46, 47, 48) to be brought in concordance with said patient-specific image data.Type: ApplicationFiled: October 31, 2008Publication date: September 23, 2010Inventors: Jacques A. De Guise, Benoit Godbout, Thierry Cresson, Ramnada Chav, Dominic Branchaud, Wafa Skalli, David Mitton
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Publication number: 20080144935Abstract: A method for segmenting elements on an image, comprising: i) creating an active contour from at least one identified point on the image; ii) defining a reference intensity value from the pixels of the active contour; iii) simplifying the image by comparing the pixels of the image to the reference intensity value to give a propagation value to the pixels of the image; and iv) propagating the active contour in a selected one of an expansion/contraction direction as a function of the propagation value of the pixels adjacent to the active contour in the image; wherein ii), iii) and iv) are repeated in the selected direction whereby the active contour finally represents the element segmented in the image.Type: ApplicationFiled: November 30, 2007Publication date: June 19, 2008Inventors: Ramnada CHAV, Ovalong Troeung, Jacques A. DE Guise, Gilles Soulez