Method, system and device for positioning an implant
First Claim
1. A method for measuring a position of a medical implant relative to an associated anatomical body part using an associated inserter or impactor device operably coupled with a reference structure and having an at least partially known or previously determined geometry or at least partially known dimensions, the medical implant being axially symmetric about an axis defined by the medical implant, the method comprising:
- releasably connecting the medical implant with the associated inserter or impactor device such that a relative alignment between the axis defined by the medical implant and the associated inserter or impactor device is fixed or determined and with a rotational position of the medical implant about the axis being arbitrary;
acquiring positional or landmark information regarding the associated anatomical body part by using a pointer to which a reference element, an inertial sensor, or a reference element and an inertial sensor is connected;
calculating an orientation of the axis defined by the medical implant and a position of the medical implant along the axis using a navigation system and the reference structure operably coupled with the associated inserter or impactor device; and
comparing the calculated orientation of the axis defined by the medical implant and the position of the medical implant along the axis with the acquired positional or landmark information regarding the associated anatomical body part in order to measure the position of the medical implant relative to the associated anatomical body part.
4 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to a method for measuring or verifying the position of a medical implant located in an anatomical body part(s) and/or structure(s) relative to the body part(s) and/or structure(s) or specific points, landmarks or planes of the same, wherein a device is provided which has an at least partially known or previously determined geometry or at least partially known dimensions and is connected to the medical implant; positional or landmark information regarding the anatomical body part(s) and/or structure(s) is acquired; the position of the medical implant is calculated using a navigation system and a reference structure which is or can be connected to the device; and the calculated position of the medical implant is related to or compared with the acquired positional or landmark information regarding the anatomical body part(s) and/or structure(s) in order to measure or verify the position of the medical implant within or relative to the anatomical body part(s) and/or structure(s).
6 Citations
11 Claims
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1. A method for measuring a position of a medical implant relative to an associated anatomical body part using an associated inserter or impactor device operably coupled with a reference structure and having an at least partially known or previously determined geometry or at least partially known dimensions, the medical implant being axially symmetric about an axis defined by the medical implant, the method comprising:
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releasably connecting the medical implant with the associated inserter or impactor device such that a relative alignment between the axis defined by the medical implant and the associated inserter or impactor device is fixed or determined and with a rotational position of the medical implant about the axis being arbitrary; acquiring positional or landmark information regarding the associated anatomical body part by using a pointer to which a reference element, an inertial sensor, or a reference element and an inertial sensor is connected; calculating an orientation of the axis defined by the medical implant and a position of the medical implant along the axis using a navigation system and the reference structure operably coupled with the associated inserter or impactor device; and comparing the calculated orientation of the axis defined by the medical implant and the position of the medical implant along the axis with the acquired positional or landmark information regarding the associated anatomical body part in order to measure the position of the medical implant relative to the associated anatomical body part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for placing a medical implant axially symmetric about an axis defined by the medical implant in an associated anatomical body part, the method comprising:
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placing the medical implant in the associated anatomical body part using an associated inserter or impactor device coupled with the medical implant such that a relative alignment between the axis defined by the medical implant and the associated inserter or impactor device is fixed or determined and such that a rotational position of the medical implant about the axis is arbitrary; and measuring a position of the medical implant by; acquiring positional or landmark information regarding the associated anatomical body part by using a pointer to which a reference element, an inertial sensor, or a reference element and an inertial sensor is connected; calculating an orientation of the axis defined by the medical implant and a position of the medical implant relative to the axis using a navigation system and a reference structure operably coupled with the associated inserter or impactor device; and comparing the calculated orientation of the axis defined by the medical implant and the position of the medical implant relative to the axis with the acquired positional or landmark information regarding the associated anatomical body part in order to measure the position of the medical implant within the associated anatomical body part.
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10. A program comprising computer executable instructions recorded on or stored in a non-transitory computer readable medium which, when executed on an associated computer causes the associated computer to perform a method for placing a medical implant in an associated anatomical body part, the medical implant being axially symmetric about an axis defined by the medical implant, the method comprising:
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acquiring positional or landmark information regarding an associated anatomical body part by using a pointer to which a reference element, an inertial sensor, or a reference element and an inertial sensor is connected; and calculating an orientation of the axis defined by the medical implant and a position of the medical implant along the axis using a navigation system and a reference structure operably coupled with an inserter or impactor device releasably connected with the medical implant, wherein the calculated orientation of the axis defined by the medical implant and the position of the medical implant along the axis is compared with the acquired positional or landmark information regarding the associated anatomical body part in order to measure the position of the medical implant relative to the associated anatomical body part.
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11. A system for determining the position of an axially symmetrical medical implant relative to an associated anatomical body part, the system comprising:
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a database; a navigation system; and a processor which is connected with the database and the navigation system, wherein the processor; acquires positional or landmark information regarding the associated anatomical body part while using a pointer to which a reference element, an inertial sensor, or a reference element and an inertial sensor is connected, and calculates an orientation of an axis defined by the medical implant and a position of the medical implant along the axis using a navigation system and a reference structure operably coupled with an inserter or impactor device releasably connected with the medical implant, wherein the calculated orientation of the axis defined by the medical implant and the position of the medical implant along the axis is compared with the acquired positional or landmark information regarding the associated anatomical body part in order to determine the position of the medical implant relative to the associated anatomical body part.
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Specification