Other

Wright Medical Technology, Inc.

Microport Orthopedics Holdings Inc.

Crescent H Trust

Johnson & Johnson Gmbh

Centerpulse Orthopedics Inc.

Radlink, Inc.

Microsoft Orthopedics Holdings Inc.

Brad L Penenberg

Christopher R McKnett

Irina A Timmerman

Murali Jasty

Wenchao Tao

Hugh P Chandler

The invention comprises a system and method that may help place or position a component, such as an acetabular cup or a femoral component, during surgery. An example system may iteratively register a plurality of two-dimensional projections from a three-dimensional model of a portion of a patient, the three-dimensional model being generated from a data set of imaging information obtained at a neutral position. An example system may further score each two-dimensional projection against an intra-operative image by calculating a spatial difference between corresponding points. A two-dimensional projection having a minimum score reflecting the smallest distance between the corresponding points may be identified. Using the two-dimensional projection having the minimum score, an adjustment score reflecting a difference in the values representing the orientation of the three-dimensional model at the intra-operative projection position and values representing the orientation of the three-dimensional model at the neutral position may be calculated. The invention also comprises a system and method also comprising surgical method and workflow to improve the efficiency of a surgical procedure by intraoperatively acquiring a digital radiographic image, processing the digital radiographic image, and using information based on the radiographic image to make adjustments during the surgical procedure. A checklist of parameters may be displayed so that the surgeon can confirm all considerations have been made for the surgical procedure.

System and method for component positioning by registering a 3D patient model to an intra-operative image

A surgical method and workflow to improve the efficiency of a surgical procedure by intraoperatively acquiring a digital radiographic image, processing the digital radiographic image, and using information based on the radiographic image to make adjustments during the surgical procedure. A checklist of parameters may be displayed so that the surgeon can confirm all considerations have been made for the surgical procedure.

Surgical method and workflow

A tool and method for locating a proper position for a portal incision for hip arthroplasty, the tool being a tubular body having a first portion defining a first axis, a second portion defining a second axis non-parallel to the first axis, the second portion having a directional tool and a lead coaxially aligned, wherein when the tubular body is placed adjacent to an acetabulum with the directional tool aimed at the acetabulum and perpendicular to a plane of the face of the acetabulum, the lead points to location on the skin that would be the proper location for the portal incision. The lead may have a blunt tip, a cutting instrument, or an opening through which a flexible tool can be inserted to forge a path towards the proper location for the portal incision.

Inside-out guide for hip replacement method

A short main incision and portal incisions at portal positions strategically displaced from the main incision are provided in a patient's hip. One portal incision (acetabular portal) provides for a disposition of reamers in the patient's acetabulum to shape the acetabulum. A cannula is inserted through the portal incision to the acetabulum and the successive reamers of progressive size are inserted into the acetabulum through the main incision to progressively size and shape the acetabulum. An approximately hemispherical acetabular component is then disposed in the prepared acetabulum to provide for hip rotation relative to the femoral component. The other portal incision (femoral portal) provides for insertion into the patient's hip of a member for driving the femoral stem into a cavity in the patient's femur. The provision of the short main incision and the portal incision minimizes the patient's loss of blood, tissue trauma, length of operating time and patient recovery time.

Apparatus for and method of providing a hip replacement

A method of providing a minimally invasive hip arthroplasty in conjunction with a main incision formed through a patient's skin and soft tissue in the patient's hip, including providing an instrument having a main body and an arrangement for guiding the formation of a portal incision and a small path to the patient's acetabulum along an impaction axis. A trocar is placed through a guide ring on an arm of the instrument to form the portal incision and small path. Impaction of an acetubular shell is carried out along the impaction axis thus formed.

Methods and instruments for use in minimally invasive hip surgery

A tool for locating a proper position for a portal incision for hip arthroplasty, the tool having at least one generally elongated body defining an axis, the generally elongated body having a slot at one end, the slot being angled at an approximately 45 degree angle relative to the axis of the generally elongated body, the slot configured to receive a cutting member or guide tool. A second generally elongated body may be connected to the first generally elongated body to form a right angle. If the lengths of the two generally elongated bodies are substantially equivalent, then when the second generally elongated body is inserted into the acetabulum, the first generally elongated body positions the slot in the proper location such that sliding a guide tool or cutting member through the slot allows a portal incision to be created in the proper location. In some embodiments, the generally elongated bodies may have adjustable lengths.

Telescopic guide for hip replacement method

A method for accurately positioning the acetabular cup in a minimally invasive total hip arthroplasty (THA), comprising the steps of (a) placing the cup in roughly the correct position in the acetabulum using a acetabular component placement tool, (b) taking a first abduction reading and a first anteversion reading using a gyroscopic positioning unit aligned with the acetabular component placement tool, (c) taking an image of at least a portion of the cup using a radiography unit, (d) using the image to determine the actual orientation of the cup and required position of the cup to properly orient the acetabular component, (e) incrementally altering the position of the cup by using a striking tool, (f) taking new abduction and anteversion readings using the gyroscopic unit to determine the relative movement of the cup caused by the tapping, and (g) repeating any of the steps as necessary.

Precision hip replacement method

Instrument for use in minimally invasive surgery

A device for accurately positioning the acetabular cup in a minimally invasive total hip arthroplasty (THA), comprising the steps of (a) placing the cup in roughly the correct position in the acetabulum using a acetabular component placement tool, (b) taking a first abduction reading and a first anteversion reading using a gyroscopic positioning unit aligned with the acetabular component placement tool, (c) taking an image of at least a portion of the cup using a radiography unit, (d) using the image to determine the actual orientation of the cup and required position of the cup to properly orient the acetabular component, (e) incrementally altering the position of the cup by using a striking tool, (f) taking new abduction and anteversion readings using the gyroscopic unit to determine the relative movement of the cup caused by the tapping, and (g) repeating any of the steps as necessary.

Precise hip component positioning for hip replacement surgery

A tool and method for locating a proper position for a portal incision for hip arthroplasty, the tool having at least one generally straight body defining an axis, the generally straight body having a slot at one end, the slot being angled at an approximately 45 degree angle relative to the axis of the generally straight body, the slot configured to receive a cutting member or guide tool. A second generally straight body may be connected to the first generally straight body to form a right angle. If the lengths of the two generally straight bodies are substantially equivalent, then when the second generally straight body is inserted into the acetabulum, the first generally straight body positions the slot in the proper location such that sliding a guide tool or cutting member through the slot allows a portal incision to be created in the proper location. In some embodiments, the generally straight bodies may have adjustable lengths.

An instrument for use in minimally invasive hip surgery, the instrument being for use in forming and using a portal incision in a hip arthroplasty procedure to implant an acetabular implant. In particular, the instrument is useful for both alignment and insertion/impaction of an acetabular shell. Furthermore, the instrument is suitable for assuring the shell is impacted with the proper abduction and version in left or right hips.

Growing community of inventors

Los Angeles, CA, United States of America

Brad L Penenberg