Precise hip component positioning for hip replacement surgery
First Claim
1. An acetabular component placement tool, comprising:
- a surgical tool having a proximal end, and a distal end opposite the proximal end, wherein the proximal end is configured to receive an acetabular component;
a gyroscope holder, wherein the gyroscope holder comprises a first end to connect with the surgical tool at the distal end, and a second end opposite the first end; and
a first gyroscopic unit attached to the gyroscope holder at the second end so that a position of a plane of the acetabular component can be measured, wherein the distal end of the surgical tool comprises a plurality of holes at different levels, and wherein the first end of the gyroscope holder comprises a cross-sectional portion keyed to fit into each of the plurality of holes of the surgical tool to adjustably attach adjacent to the distal end of the surgical tool.
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Accused Products
Abstract
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.
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Citations
19 Claims
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1. An acetabular component placement tool, comprising:
- a surgical tool having a proximal end, and a distal end opposite the proximal end, wherein the proximal end is configured to receive an acetabular component;
a gyroscope holder, wherein the gyroscope holder comprises a first end to connect with the surgical tool at the distal end, and a second end opposite the first end; and
a first gyroscopic unit attached to the gyroscope holder at the second end so that a position of a plane of the acetabular component can be measured, wherein the distal end of the surgical tool comprises a plurality of holes at different levels, and wherein the first end of the gyroscope holder comprises a cross-sectional portion keyed to fit into each of the plurality of holes of the surgical tool to adjustably attach adjacent to the distal end of the surgical tool. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- a surgical tool having a proximal end, and a distal end opposite the proximal end, wherein the proximal end is configured to receive an acetabular component;
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9. An acetabular component placement tool, comprising:
- a surgical tool having a proximal end, and a distal end opposite the proximal end, wherein the proximal end is configured to receive an acetabular component;
a gyroscope holder, wherein the gyroscope holder comprises a first end to connect with the surgical tool at the distal end; and
a first gyroscopic unit operatively connected to the distal end of the surgical tool so that an orientation of the acetabular component can be measured, wherein the distal end of the surgical tool comprises a plurality of holes at different levels, and wherein the first end of the gyroscope holder comprises a cross-sectional portion keyed to fit into each of the plurality of holes of the surgical tool to adjustably attach adjacent to the distal end of the surgical tool. - View Dependent Claims (10, 11, 12, 13, 14)
- a surgical tool having a proximal end, and a distal end opposite the proximal end, wherein the proximal end is configured to receive an acetabular component;
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15. An acetabular component placement tool, comprising:
- a surgical tool having a proximal end, and a distal end opposite the proximal end, wherein the proximal end is configured to receive an acetabular component;
a gyroscope holder, wherein the gyroscope holder comprises a first end to connect with the surgical tool at the distal end;
a first gyroscopic unit operatively connected to the distal end of the surgical tool so that an orientation of the acetabular component can be measured; and
a second gyroscopic unit operatively connected to the surgical tool to measure the orientation of the acetabular component, wherein the distal end of the surgical tool comprises a plurality of holes at different levels, and wherein the first end of the gyroscope holder comprises a cross-sectional portion keyed to fit into each of the plurality of holes of the surgical tool to adjustably attach adjacent to the distal end of the surgical tool. - View Dependent Claims (16, 17, 18, 19)
- a surgical tool having a proximal end, and a distal end opposite the proximal end, wherein the proximal end is configured to receive an acetabular component;
Specification