METHOD AND APPARATUS FOR DETERMINING THE ORIENTATION AND/OR POSITION OF AN OBJECT DURING A MEDICAL PROCEDURE
First Claim
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1. A computer-guided system for determining the disposition of an object, the computer-guided system comprising:
- a platform;
a compass removably and adjustably mounted to the platform, the compass comprising;
a first arm having a proximal end and a distal end;
a second arm having a proximal end and a distal end;
the proximal end of the first arm being removably and adjustably mounted to the platform by a magnetic ball mount, wherein the magnetic ball mount comprises a spherical encoder;
the proximal end of the second arm being movably mounted to the distal end of the first arm by a pivot mount, wherein the pivot mount comprises an angular sensor; and
determining means for determining the disposition of the distal end of the second arm relative to the platform by using data from the spherical encoder and the angular sensor.
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Abstract
A computer-guided system for determining the disposition of an object, the computer-guided system comprising:
- a platform;
- a compass removably and adjustably mounted to the platform, the compass comprising:
- a first arm having a proximal end and a distal end;
- a second arm having a proximal end and a distal end;
- the proximal end of the first arm being removably and adjustably mounted to the platform by a magnetic ball mount, wherein the magnetic ball mount comprises a spherical encoder;
- the proximal end of the second arm being movably mounted to the distal end of the first arm by a pivot mount, wherein the pivot mount comprises an angular sensor; and
- determining means for determining the disposition of the distal end of the second arm relative to the platform by using data from the spherical encoder and the angular sensor.
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Citations
31 Claims
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1. A computer-guided system for determining the disposition of an object, the computer-guided system comprising:
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a platform; a compass removably and adjustably mounted to the platform, the compass comprising; a first arm having a proximal end and a distal end; a second arm having a proximal end and a distal end; the proximal end of the first arm being removably and adjustably mounted to the platform by a magnetic ball mount, wherein the magnetic ball mount comprises a spherical encoder; the proximal end of the second arm being movably mounted to the distal end of the first arm by a pivot mount, wherein the pivot mount comprises an angular sensor; and determining means for determining the disposition of the distal end of the second arm relative to the platform by using data from the spherical encoder and the angular sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for determining the disposition of an object, the method comprising:
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providing a computer-guided system for determining the disposition of an object, the computer-guided system comprising; a platform; a compass removably and adjustably mounted to the platform, the compass comprising; a first arm having a proximal end and a distal end; a second arm having a proximal end and a distal end; the proximal end of the first arm being removably and adjustably mounted to the platform by a magnetic ball mount, wherein the magnetic ball mount comprises a spherical encoder; the proximal end of the second arm being movably mounted to the distal end of the first arm by a pivot mount, wherein the pivot mount comprises an angular sensor; and determining means for determining the disposition of the distal end of the second arm relative to the platform by using data from the spherical encoder and the angular sensor; mounting the object to the distal end of the second arm; and using the computer-guided system to determine the orientation of the object relative to the platform. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method for setting a prosthetic acetabular cup in the native acetabular cup with a desired inclination and anteversion, the method comprising:
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providing a computer-guided system for determining the orientation of the prosthetic acetabular cup, the computer-guided system comprising; a platform; a compass removably and adjustably mounted to the platform, the compass comprising; a first arm having a proximal end and a distal end; a second arm having a proximal end and a distal end; the proximal end of the first arm being removably and adjustably mounted to the platform by a magnetic ball mount, wherein the magnetic ball mount comprises a spherical encoder; the proximal end of the second arm being movably mounted to the distal end of the first arm by a pivot mount, wherein the pivot mount comprises an angular sensor; and determining means for determining the disposition of the distal end of the second arm relative to the platform by using data from the spherical encoder and the angular sensor; determining the two ASIS points; determining the center of the hip using the computer-guided system; determining the HCAPP using the two ASIS points and the center of the hip; determining the calculated APP using the HCAPP; mounting the prosthetic acetabular cup to the distal end of the second arm; and using the computer-guided system to set the prosthetic acetabular cup in the native acetabular cup with a desired inclination and anteversion.
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31. A computer-guided system for determining the disposition of an object, the computer-guided system comprising:
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a platform; an object; a first compass removably and adjustably mounted to the platform, the first compass comprising;
a first arm having a proximal end and a distal end;
a second arm having a proximal end and a distal end;
the proximal end of the first arm being removably and adjustably mounted to the platform by a magnetic ball mount;
the proximal end of the second arm being movably mounted to the distal end of the first arm by a pivot mount, wherein the pivot mount comprises an angular sensor;
an accelerometer mounted to at least one of the first arm and the second arm;
wherein the distal end of the second arm is mounted to the object;a second compass removably and adjustably mounted to the platform, the second compass comprising;
a first arm having a proximal end and a distal end;
a second arm having a proximal end and a distal end;
the proximal end of the first arm being removably and adjustably mounted to the platform by a magnetic ball mount;
the proximal end of the second arm being movably mounted to the distal end of the first arm by a pivot mount, wherein the pivot mount comprises an angular sensor;
an accelerometer mounted to at least one of the first arm and the second arm;
wherein the distal end of the second arm is mounted to the object; anddetermining means for determining the disposition of the relative to the platform by using data from the angular sensor and accelerometer of the first compass and data from the angular sensor and accelerometer of the second compass.
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Specification