Think Surgical, Inc.

Extramet Products LLC

Micah Forstein

Kyle Kuznik

Joel F Zuhars

Gibson Elliot

Hosna Akhlaghpour

Ryan Sass

Daniel Patrick Bonny

Timothy J Pack

Feimo Shen

Jay Roldan

Barry Voorhees

Muhammad Afnan

Koteswara Ruvva

Christopher Douglas

Cj Geering

Justin Eskesen

Min Yang Jung

A system and method are provided for aligning a tool with a targeted axis in tissue to perform a medical procedure. A medical plan is registered to the location of the tissue using a computer-assisted medical system, where the medical plan include a planned position for the targeted axis based on pre-procedure data. The tool is aligned with the planned position for the targeted axis using a computer- assisted medical system. The computer-assisted medical system includes a hand- held device having a handle and a working portion adjustable relative to the handle so as to orient the tool. A computing system is also provided comprising a tracking system and a control system for registering the medical plan to the location of the tissue, tracking the hand-held device relative to the tissue and the medical plan, and adjusting the working portion of the hand-held device relative to its handle.

System and method for aligning a tool with an axis to perform a medical procedure

A biocompatible surgical article is provided for cutting biological tissue or implantation in contact therewith. The surgical article has a composition of tungsten carbide-nickel with a percentage of additional metal carbides present. A typical composition in total weight percentages is WC 85 to 95%, CrC, MoC, VC each alone or in combination being present from 0 to 2%, and Ni constituting the remainder. The composition is formed to have a mean grain size of between 200 and 800 nm with a particle dispersion index (PdI) corresponding to (the square of the standard deviation)/(mean grain size) of between 0 and 0.6, and in some embodiments between 0.02 and 0.2.

Surgical article formed from fine grained tungsten carbide in nickel matrix

A method to guide in preparation of a bone relies on an instrument having a shaft with a working end and a stop member. The shaft is free to translate along an axis. Surgical planning data is registered to the bone to determine intra-operative coordinates of the desired axis and depth. The instrument holder is positioned by the bone so the stop member contacts the instrument holder to prevent translating beyond the desired depth. Alternatively, an arm is manipulated to align the instrument with the desired axis. The working end rests on the bone to define a linear separation to the desired depth. By proximally translating the instrument holder to contact the stop member and distally translating the instrument holder along the shaft, the stop member physically stops translating beyond the desired depth. A surgical system for performing the methods is provided; a reamer or impactor are also disclosed.

Method of controlling instrumentation depth in total joint arthroplasty

A method and system are provided to determine an optimal placement with respect to position and orientation for one or more bones in a workspace of a robot to improve robotic cutting and maximize the robot workspace during a robotic surgical procedure. The method is additionally useful to aid a user in positioning and orienting the bones in the operating room at the determined position and orientation.

Method to determine bone placement in a robot workspace

A system for improved surgical cutting in the presence of surgical debris, the system comprising: a surgical cutter comprising a distal end and a proximal end, the distal end of the surgical cutter being configured to cut bone; a debris detection system mounted to the surgical cutter, the debris detection system comprising: a light source for emitting light; a receiver for receiving light emitted from the light source; and a microprocessor for determining a change in a characteristic of the light emitted by the light source and received by the receiver, and for determining the presence and/or amount of surgical debris present at a surgical site using a change in a characteristic of the light emitted by the light source and received by the receiver; and a controller for varying, based on the presence and/or amount of surgical debris present at the surgical site, at least one of (i) an amount of irrigation supplied to the surgical site, (ii) the feed rate of the surgical cutter, (iii) the direction of the surgical cutter, and (iv) the spindle speed of the surgical cutter.

System and method to improve surgical cutting in the presence of surgical debris

A method of analyzing the quality of bone at one or more bone regions during an orthopedic surgical procedure includes an initial audio sample being recorded with an acoustic sensor, while a cutting instrument cuts a first region of a bone. The first audio sample is stored as a reference sample that represents a good degree of bone quality. A second audio sample is recorded with the acoustic sensor, while the cutting instrument cuts a second region of the bone. The second audio sample is compared to the reference sample to analyze the bone quality at the second region of the bone. A system for performing the method is also provided.

Acoustic analyzation of bone quality during orthopedic surgery

A system and method are described herein for creating planar bone cuts on a bone to receive a total knee arthroplasty (TKA) femoral implant. The system includes a robotic surgical device, a computing system, and one or more contingent manual instruments. A surgical plan is generated having instructions for the robotic surgical device to create six or more planar bone cuts on the bone. The robotic surgical device executes the instructions, and in the event the robotic procedure is aborted before completing the six or more planar cuts, the one or more contingent manual instruments are used to create any remaining planar bone cuts. The one or more contingent manual instruments may include a plurality of uniquely arranged guide slots to assist a user in creating one or more remaining planar bone cuts.

Robot specific implant designs with contingent manual instrumentation

A method and system are provided to intraoperatively adjust the dimensions of a pre-operatively planned implant cavity to improve implant fit in a bone. The method includes obtaining a preoperative image data set of the bone. A surgical plan is generated using the image data set and/or a three-dimensional (3-D) bone model of the patient's bone generated from the image data set. Intraoperatively, the patient's bone is exposed and registered to the surgical plan and a computer assisted surgical system. The computer assisted surgical system having a cutting tip and a force sensor for sensing actual forces exerted on the cutting tip as an initial cut is created on the bone at a first bone region. Based on the difference between the actual cutting force and the expected cutting force in the plan, the dimensions of the cavity are adjusted accordingly.

Intraoperative adjustment of a pre-operatively planned implant cavity to improve implant fit

A process and system for computer assisted orthopedic procedure is provided with a plurality of options to plan, execute, and monitor the creation of a cavity to receive a prosthetic based on clinical needs and pre-operative imaging data. A phantom made of materials of known densities is used to normalize CT image intensity values to estimate bone density. The process and system controls the speed, cutter engagement, orientation, and shape of the cavity so produced based on the normalized bone density values.

Growing community of inventors

Fremont, CA, United States of America

Micah Forstein