Ultrasound image guided acetabular implant orientation during total hip replacement
AssigneeThe Regents of the University of California
InventorsJohn Chang, Waleed Haddad, Jan-Ulco Kluiwstra, Dennis Matthews, Kenneth Trauner
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Abstract
A system for assisting in precise location of the acetabular implant during total hip replacement. The system uses ultrasound imaging for guiding the placement and orientation of the implant.
Claims7
A surgical method for assisting a surgeon in precise location of an acetabular implant during total hip replacement by positioning said acetabular implant in a patient's joint socket in said patient's pelvic region, comprising the steps of:
- interrogating said patient's pelvic region using an ultrasound imaging head,
- positioning an ultrasonic adapter cup in said patient's joint socket and located between said ultrasopic imaging head and said patient's pelvic region,
- marking reference alignment markings in said patient's joint socket relative to said patient's pelvic region, and
- using said reference alignment markings to locate said ultrasonic adapter cup and said acetabular implant in said patient's joint socket during total hip replacement.
An apparatus to assist a surgeon in precise location of an acetabular implant during total hip replacement by positioning said acetabular implant in a patient's joint socket in said patient's pelvic region, comprising:
- an ultrasonic imaging head for real-time in-vivo imaging of said patient's joint socket and pelvic region during hip joint replacement,
- an ultrasonic adapter cup operatively connected to said ultrasonic imaging head, said ultrasonic adapter cup having a portion that fits within said joint socket, and
- alignment markings operatively positioned in said joint socket for accurate positioning of said ultrasonic adapter cup and said acetabular implant in said joint socket.
Dependencies are inferred from the claim text.