Cutting guide instrument
First Claim
1. A cutting guide instrument for enabling high-precision resection of the head (caput femoris) of the neck of a human femur (collum femoris) at a predetermined cutting angle (α
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c) to the femoral shaft and on a predetermined cutting level (Lc) with respect to the proximal end of the caput, said cutting guide comprising;
a support part, comprising a fixture member intended to be fixed to the femur during said resection,a longitudinal guide carrier, having a longitudinal axis (D--D), which in use of the instrument is supported by the support part with the longitudinal axis extending along the femoral collum at a prepredetermined allignment angle to the femoral shaft, anda cutting guide, which in use of the instrument is supported by and movable along the axis (D--D) of the guide carrier to a cutting position corresponding to the predetermined cutting level (Lc).wherein the longitudinal guide carrier and cutting guide are adapted such that when the cutting guide is supported by the longitudinal guide carrier at the cutting position the cutting guide is oriented at the predetermined cutting angle (α
c) to the femoral shaft.
1 Assignment
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Accused Products
Abstract
The invention relates to a cutting guide instrument and method for enabling high-precision resection of the head (caput femoris) (8) of the neck (5) of a human femur (collum femoris) at a predetermined cutting angle (αc) to the femoral shaft (9) and on a predetermined cutting level (Lc) with respect to the proximal end of the caput (8). A support part (11) is fixed to the femur during the resection. A longitudinal guide carrier (12) is supported by the support part (11) and is aligned along the femoral collum (5) at said predetermined cutting angle (αc) to the femoral shaft (9). A cutting guide (13) is supported by and movable along the axis (D--D) of the guide carrier (12) to a cutting position corresponding to the predetermined cutting level (Lc). The invention also relates to the use of the instrument for performing such resection.
212 Citations
31 Claims
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1. A cutting guide instrument for enabling high-precision resection of the head (caput femoris) of the neck of a human femur (collum femoris) at a predetermined cutting angle (α
-
c) to the femoral shaft and on a predetermined cutting level (Lc) with respect to the proximal end of the caput, said cutting guide comprising;
a support part, comprising a fixture member intended to be fixed to the femur during said resection, a longitudinal guide carrier, having a longitudinal axis (D--D), which in use of the instrument is supported by the support part with the longitudinal axis extending along the femoral collum at a prepredetermined allignment angle to the femoral shaft, and a cutting guide, which in use of the instrument is supported by and movable along the axis (D--D) of the guide carrier to a cutting position corresponding to the predetermined cutting level (Lc). wherein the longitudinal guide carrier and cutting guide are adapted such that when the cutting guide is supported by the longitudinal guide carrier at the cutting position the cutting guide is oriented at the predetermined cutting angle (α
c) to the femoral shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 30, 31)
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c) to the femoral shaft and on a predetermined cutting level (Lc) with respect to the proximal end of the caput, said cutting guide comprising;
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18. A method for enabling high-precision resection of the head (caput femoris) of the neck of a human femur (collum femoris) at a predetermined cutting angle (α
-
c) to the femoral shaft and on a predetermined cutting level (Lc) with respect to the proximal end of the caput, the method comprising the steps of;
providing a longitudinal guide carrier having a longitudinal axis (D--D), providing a cutting guide, which is supported by and is movable along the axis (D--D) of the guide carrier, aligning the guide carrier along the femoral collum at a predetermined alignment angle to the femoral shaft at which the cutting guide is supported by the guide carrier at the predetermined cutting angle (α
c), andmoving said cutting guide along the guide carrier to a cutting position corresponding to the predetermined cutting level (Lc). - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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c) to the femoral shaft and on a predetermined cutting level (Lc) with respect to the proximal end of the caput, the method comprising the steps of;
Specification