Surgical instrument and method of positioning same
First Claim
1. A surgical instrument for use with an anatomical structure, said instrument comprising:
- an anchoring member having a first portion securable to the anatomical structure;
an instrument body adjustably repositionable relative to said anchoring member; and
at least one reference element mountable to said instrument body, said at least one reference element registerable in a computer implemented image guidance system.
1 Assignment
0 Petitions
Accused Products
Abstract
A surgical instrument having an anchoring member and an instrument body which is adjustably repositionable relative to the anchoring member. At least one reference element may be mounted on the instrument body to facilitate the registration of the instrument body in a computer implemented image guidance system. The reference element may be three non-linearly positioned elements disposed on a removably mountable member. The anchoring member may be secured to an anatomical structure using an image guidance system. The instrument body may then be selectively adjusted with respect to the anchoring member and anatomical structure after securing the anchoring member with the anatomical structure. The selective repositioning adjustment of the instrument body on the anatomical structure may also employ a computer implemented image guidance system. The instrument may be used in the resection of a femur when implanting a prosthetic knee joint.
125 Citations
64 Claims
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1. A surgical instrument for use with an anatomical structure, said instrument comprising:
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an anchoring member having a first portion securable to the anatomical structure;
an instrument body adjustably repositionable relative to said anchoring member; and
at least one reference element mountable to said instrument body, said at least one reference element registerable in a computer implemented image guidance system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A surgical instrument for use with an anatomical structure, said instrument comprising:
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an anchoring member having a shaft securable to the anatomical structure, said shaft defining a first axis;
an instrument body adjustably repositionable relative to said anchoring member wherein said instrument body is adjustably pivotal about a second axis disposed substantially perpendicular to said first axis; and
at least one reference element mountable on said instrument body, said at least one reference element registerable in a computer implemented image guidance system wherein repositioning of said instrument body repositions said at least one reference element. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A method of positioning a surgical instrument with respect to an anatomical structure, said method comprising:
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providing an instrument having an anchoring member and an instrument body adjustably repositionable relative to said anchoring member;
securing said anchoring member to the anatomical structure;
registering the position of said instrument body relative to said anatomical structure in a computer implemented image guidance system; and
selectively adjusting the position of said instrument body relative to said anchoring member after said steps of securing said anchoring member and registering the position of said instrument body. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A method of positioning a surgical instrument with respect to an anatomical structure, said method comprising:
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providing an instrument having an anchoring member and an instrument body adjustably repositionable relative to said anchoring member;
positioning said anchoring member relative to the anatomical structure using a computer implemented image guidance system and securing said anchoring member to the anatomical structure in a selected position; and
selectively adjusting the position of said instrument body relative to said anchoring member after securing said anchoring member to the anatomical structure. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43)
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44. A method of preparing a femur for an implant, said method comprising:
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providing an instrument having an anchoring member, said anchoring member having a shaft defining a first axis and an instrument body adjustably repositionable relative to said anchoring member;
securing said shaft of said anchoring member to the femur substantially coaxially with the mechanical axis of the femur with the aid of a computer implemented image guidance system; and
selectively adjusting the position of said instrument body relative to said anchoring member after securing said anchoring member to the femur. - View Dependent Claims (45, 46, 47, 48, 49, 50)
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51. A surgical instrument for use with an anatomical structure, said instrument comprising:
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an anchoring member having a first portion securable to the anatomical structure;
an instrument body adjustably repositionable relative to said anchoring member;
at least two adjustment members, each of said adjustment members independently and positively securing said instrument body in a selected position with respect to one of six degrees of freedom wherein said six degrees of freedom are defined by translational movement along three substantially mutually perpendicular translational axes and rotational movement about three substantially mutually perpendicular rotational axes; and
at least one reference element mountable to said instrument body, said at least one reference element registerable in a computer implemented image guidance system. - View Dependent Claims (52, 53, 54, 55, 56, 57)
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58. A method of positioning a surgical instrument with respect to an anatomical structure, said method comprising:
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providing an instrument having an anchoring member and an instrument body adjustably repositionable relative to said anchoring member;
securing said anchoring member to the anatomical structure;
registering the position of said instrument body in a computer implemented image guidance system;
selectively adjusting the position of said instrument body relative to said anchoring member with regard to a first one of six degrees of freedom wherein said six degrees of freedom are defined by translational movement along three substantially perpendicular axes and rotational movement about three substantially perpendicular axes; and
selectively adjusting the position of said instrument body relative to said anchoring member with regard to a second one of said six degrees of freedom independently of said step of selectively adjusting the position of said instrument body relative to said anchoring member with regard to said first one of said six degrees of freedom;
wherein each of said steps of selectively adjusting the position of said instrument body relative to said anchoring member occur after said steps of securing said anchoring member and registering the position of said instrument body. - View Dependent Claims (59, 60, 61, 62, 63, 64)
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Specification