Surgical orientation system and method
First Claim
1. A method of positioning a medical prosthesis with respect to an anatomical feature of a patient, the method comprising:
- providing a surgical instrument adapted to support the medical prosthesis or an alignment guide adapted to contact the anatomical feature, and identifying a first position of the surgical instrument relative to the anatomical feature;
coupling a first measuring device to the surgical instrument in the first position and zeroing the first measuring device, the first measuring device being adapted to measure first positional changes;
attaching the first measuring device to the patient near the anatomical feature;
coupling a second measuring device to the surgical instrument in the first position and zeroing the second measuring device, the second measuring device being adapted to measure second positional changes; and
determining a relative position of the second measuring device to the anatomical feature, based on the first positional changes and the second positional changes.
2 Assignments
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Accused Products
Abstract
A system and method for detecting and measuring changes in angular position with respect to a reference plane is useful in surgical procedures for orienting various instruments, prosthesis, and implants with respect to anatomical landmarks. One embodiment of the device uses dual orientation devices of a type capable of measuring angular position changes from a reference position. One such device provides information as to changes in position of an anatomical landmark relative to a reference position. The second device provides information as to changes in position of a surgical instrument and/or prosthesis relative to the reference position.
283 Citations
29 Claims
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1. A method of positioning a medical prosthesis with respect to an anatomical feature of a patient, the method comprising:
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providing a surgical instrument adapted to support the medical prosthesis or an alignment guide adapted to contact the anatomical feature, and identifying a first position of the surgical instrument relative to the anatomical feature; coupling a first measuring device to the surgical instrument in the first position and zeroing the first measuring device, the first measuring device being adapted to measure first positional changes; attaching the first measuring device to the patient near the anatomical feature; coupling a second measuring device to the surgical instrument in the first position and zeroing the second measuring device, the second measuring device being adapted to measure second positional changes; and determining a relative position of the second measuring device to the anatomical feature, based on the first positional changes and the second positional changes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of positioning a medical prosthesis in a joint of a patient, the medical prosthesis being positioned with respect to an anatomical feature of the patient, the method comprising:
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providing a surgical instrument adapted to prepare the joint to receive the medical prosthesis, the surgical instrument having an alignment guide coupled to the surgical instrument and adapted to be moveable with respect to the anatomical feature; coupling a first measuring device to the patient, the first measuring device adapted to measure positional changes of the patient; coupling a second measuring device to the surgical instrument when the surgical instrument is in a first position, the second measuring device adapted to measure positional changes of the alignment guide with respect to the anatomical feature or the joint; zeroing the first and second measuring devices with respect to one another in the first position, the first measuring device providing a reference to the second measuring device for compensating for positional changes of the patient; attaching the surgical instrument to the patient near the anatomical feature; manipulating the alignment guide with respect to the joint so that the alignment guide is in a second position; and determining a relative position of the second measuring device with respect to the anatomical feature based on the second position of the alignment guide. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A system for positioning a medical prosthesis in a joint of a patient, the medical prosthesis being positioned with respect to an anatomical feature of the patient, the system comprising:
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a surgical instrument removably engageable to the patient adjacent the joint and near the anatomical feature, the surgical instrument configured to prepare the joint to receive the medical prosthesis; an alignment guide movable couple to the surgical instrument and configured to be moveable with respect to the anatomical feature, the surgical instrument configured to support either the alignment guide or the prosthesis; a first measuring device configured to be coupled to the patient, the first measuring device configured to measure positional changes of the patient; a second measuring device configured to be coupled to the surgical instrument, the second measuring device configured to measure positional changes of the alignment guide with respect to the anatomical feature or the joint; first and second zeroing devices on the first and second measuring respectively, wherein the first and second measuring devices are configured to be zeroed with respect to one another in a first position, the first measuring device configured to provide a reference to the second measuring device for compensating for positional changes of the patient; and a communications module coupled to the first and second measuring devices for electronic communications between the first and second measuring devices, the communications module configured to communicate a second position of the second measuring device relative to the first measuring device and the first position, wherein the alignment guide is configured to be manipulated with respect to the joint so that the alignment guide and the second measuring device are in the second position; wherein the first and second measuring devices are configured to determine a relative position of the second measuring device with respect to the anatomical feature based on the second position of the alignment guide. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification