Total hip replacement surgical guide tool
AssigneeOtisMed Corporation
InventorsIlwhan Park, Michael Koehle, Lorenzo R. Deveza
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a surgical guide tool for use in total hip replacement surgery. The surgical guide tool may include a customized mating region and a resection guide. The customized mating region and the resection guide are referenced to each other such that, when the customized mating region matingly engages a surface area of a proximal femur, the resection guide will be aligned to guide a resectioning of the proximal femur along a preoperatively planned resection plane.
Claims71
A surgical guide tool for use in the preparation of a proximal portion of a femur for the implantation of a total hip replacement prosthetic implant, the implant including a feature configured to abut against a resection surface of the proximal femur when the implant is fully implanted in the proximal femur in a manner that generally replicates a preoperatively planned implantation for the implant, the tool comprising:
- a mating region and a saw guide, wherein, when the mating region matingly contacts the proximal portion, the saw guide is aligned with a resection plane generally corresponding to the resection surface.
A surgical guide tool for use in total hip replacement surgery on a proximal portion of a femur having a head, a neck extending distally from the head, and a surface region distal the head, the tool comprising:
- a body including a saw guide and a mating region configured to matingly contact the surface region, the saw guide and mating region being positioned relative to each other so the saw guide is positioned to guide a resection that generally corresponds to a preoperatively planned resection plane when the mating region matingly contacts the surface region, the surface region including at least a portion of a superior-posterior region of the neck, the at least a portion of a superior-posterior region of the neck starting between approximately 1 mm and approximately 5 mm after a cartilage covering the head terminates distally and extending between approximately 15 mm and approximately 35 mm towards a trochanteric fossa.
A surgical guide tool for use in total hip replacement surgery on a proximal portion of a femur having a head, a neck extending distally from the head, and a surface region distal the head, the tool comprising:
- a body including a saw guide and a mating region configured to matingly contact the surface region, the saw guide and mating region being positioned relative to each other so the saw guide is positioned to guide a resection that generally corresponds to a preoperatively planned resection plane when the mating region matingly contacts the surface region, the surface region including at least a portion of a superior-posterior region of the neck, the at least a portion of a superior-posterior region of the neck including a narrow band that follows along an intertrochanteric crest and has a medial-lateral width of between approximately 0.5 mm and approximately 8 mm.
A surgical guide tool for use in total hip replacement surgery on a proximal portion of a femur having a head, a neck extending distally from the head, and a surface region distal the head, the tool comprising:
- a body including a saw guide and a mating region configured to matingly contact the surface region, the saw guide and mating region being positioned relative to each other so the saw guide is positioned to guide a resection that generally corresponds to a preoperatively planned resection plane when the mating region matingly contacts the surface region, the surface region including at least a portion of a superior-anterior region of the neck, the at least a portion of a superior-anterior region of the neck starting between approximately 1 mm and approximately 5 mm after a cartilage covering the head terminates distally and extending between approximately 15 mm and approximately 35 mm to terminate before a tubercle.
A surgical guide tool for use in total hip replacement surgery on a proximal portion of a femur having a head, a neck extending distally from the head, and a surface region distal the head, the tool comprising:
- a body including a saw guide and a mating region configured to matingly contact the surface region, the saw guide and mating region being positioned relative to each other so the saw guide is positioned to guide a resection that generally corresponds to a preoperatively planned resection plane when the mating region matingly contacts the surface region, the surface region including at least a portion of a superior-posterior region of the neck and at least a portion of a superior-anterior region of the neck, but does not include a junction between the superior-posterior and superior-anterior regions of the neck.
A surgical guide tool for use in total hip replacement surgery on a proximal portion of a femur having a head, a neck extending distally from the head, and a surface region distal the head, the tool comprising:
- a body including a saw guide and a mating region configured to matingly contact the surface region, the saw guide and mating region being positioned relative to each other so the saw guide is positioned to guide a resection that generally corresponds to a preoperatively planned resection plane when the mating region matingly contacts the surface region, the surface region including at least a portion of a posterior region of the neck, the at least a portion of the posterior region of the neck including an area that extends towards a trochanteric fossa between approximately 15 mm and approximately 35 mm from a first point being between approximately 1 mm and approximately 5 mm distal of a distal termination of a cartilage covering the head.
A surgical guide tool for use in total hip replacement surgery on a proximal portion of a femur having a head, a neck extending distally from the head, and a surface region distal the head, the tool comprising:
- a body including a saw guide and a mating region configured to matingly contact the surface region, the saw guide and mating region being positioned relative to each other so the saw guide is positioned to guide a resection that generally corresponds to a preoperatively planned resection plane when the mating region matingly contacts the surface region, the surface region including at least a portion of a posterior region of the neck, the at least a portion of the posterior region of the neck including an area that includes a narrow band measuring between approximately 0.5 mm and approximately 12 mm and following along an intertrochanteric crest.
A surgical guide tool for use in total hip replacement surgery on a proximal portion of a femur having a head, a neck extending distally from the head, and a surface region distal the head, the tool comprising:
- a body including a saw guide and a mating region configured to matingly contact the surface region, the saw guide and mating region being positioned relative to each other so the saw guide is positioned to guide a resection that generally corresponds to a preoperatively planned resection plane when the mating region matingly contacts the surface region, the surface region including at least a portion of a posterior region of the neck, the at least a portion of the posterior region of the neck including an area that extends towards a trochanteric fossa from a first point being between approximately 1 mm and approximately 5 mm distal of a distal termination of a cartilage covering the head, but does not include an area spanning portions of the trochanteric fossa.
A surgical guide tool for use in total hip replacement surgery on a proximal portion of a femur having a head, a neck extending distally from the head, and a surface region distal the head, the tool comprising:
- a body including a saw guide and a mating region configured to matingly contact the surface region, the saw guide and mating region being positioned relative to each other so the saw guide is positioned to guide a resection that generally corresponds to a preoperatively planned resection plane when the mating region matingly contacts the surface region, the surface region including at least a portion of an anterior region of the neck, the at least a portion of an anterior region of the neck extending up to approximately 8 mm laterally past an intertrochanteric line.
A surgical guide tool for use in total hip replacement surgery on a proximal portion of a femur having a head, a neck extending distally from the head, and a surface region distal the head, the tool comprising:
- a body including a saw guide and a mating region configured to matingly contact the surface region, the saw guide and mating region being positioned relative to each other so the saw guide is positioned to guide a resection that generally corresponds to a preoperatively planned resection plane when the mating region matingly contacts the surface region, the surface region including at least a portion of a lateral posterior greater trochanter.
A surgical guide tool for use in total hip replacement surgery on a proximal portion of a femur, the tool comprising:
- a mating region and a saw guide, wherein, when the mating region matingly contacts the proximal portion, the saw guide is generally aligned with a preoperatively planned resection plane.
A method of manufacturing a surgical guide tool for use in total hip replacement surgery on a proximal portion of a femur having a head, a neck extending distally from the head, and a surface region distal the head, the method comprising:
- a) generating medical imaging data associated with the proximal portion of the femur;
- b) employing the imaging data to generate a three-dimensional computer-generated femur model of the proximal portion of the femur;
- c) providing a three-dimensional computer-generated implant model;
- d) providing a three-dimensional computer-generated tool model of at least a portion of at least a surgical guide tool and a surgical guide tool blank;
- e) superimposing the femur model and implant model;
- f) superimposing the tool model with the superimposed femur model and implant model;
- g) computer generating manufacturing instructions from data determined from step f;
- and
- h) employing the manufacturing instructions at a manufacturing machine to generate the surgical guide tool.
Dependencies are inferred from the claim text.