PATIENT-SPECIFIC SURGICAL GUIDANCE TOOL AND METHOD OF USE
First Claim
1. A preoperatively designed guidance tool for intraoperative use during bone or joint surgery wherein said guidance tool is specific to the anatomy of the patient being treated, said guidance tool comprising:
- a body portion;
a mating surface provided on said body portion, said mating surface for positioning said guidance tool on a corresponding registration surface of a patient'"'"'s anatomy; and
at least one guide mechanism provided on said body portion, said at least one guide mechanism for guiding at least one medical instrument at one or more preoperatively defined trajectories relative to a patient'"'"'s anatomy;
wherein said at least one guide mechanism is adjustable to alter the one or more preoperatively defined trajectories if necessary during intraoperative use.
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Abstract
Presented is a preoperatively designed guidance tool for intraoperative use during bone or joint surgery wherein the guidance tool is specific to the anatomy of the patient being treated. The guidance tool comprises a body portion, a mating surface provided on the body portion for positioning the guidance tool on a corresponding registration surface of a patient'"'"'s anatomy. The guidance tool further comprises at least one guide mechanism provided on the body portion for guiding a medical instrument at one or more preoperatively defined trajectories relative to a patient'"'"'s anatomy. In the event of misalignment, the at least one guide mechanism is adjustable to alter the one or more preoperatively defined trajectories if necessary during intraoperative use. Also presented is a preoperative process for designing the guidance tool.
380 Citations
20 Claims
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1. A preoperatively designed guidance tool for intraoperative use during bone or joint surgery wherein said guidance tool is specific to the anatomy of the patient being treated, said guidance tool comprising:
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a body portion; a mating surface provided on said body portion, said mating surface for positioning said guidance tool on a corresponding registration surface of a patient'"'"'s anatomy; and at least one guide mechanism provided on said body portion, said at least one guide mechanism for guiding at least one medical instrument at one or more preoperatively defined trajectories relative to a patient'"'"'s anatomy; wherein said at least one guide mechanism is adjustable to alter the one or more preoperatively defined trajectories if necessary during intraoperative use. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A preoperative process for designing at least one guidance tool for intraoperative use during bone or joint surgery wherein said at least one guidance tool is specific to the anatomy of the patient being treated, said process comprising
creating a 3-D surface model of the patient'"'"'s anatomy; -
using the 3-D surface model of the patient'"'"'s anatomy to preoperatively determine a trajectory of at least one medical instrument during bone or joint manipulation; designing at least one guidance tool for registering against the patient'"'"'s anatomy, said at least one guidance tool providing a guide mechanism and a mating surface, said guide mechanism for guiding said at least one medical instrument during said bone or joint manipulation at one or more preoperatively defined trajectory relative to a patient'"'"'s anatomy, said mating surface providing positional registration of said at least one guidance tool on the patient'"'"'s anatomy; and preoperatively assessing the fit, size and design of the at least one guidance tool on the patient anatomy using the 3-D surface model of the patient'"'"'s anatomy, and adjusting the design of the at least one guidance tool as necessary to achieve a correct fit. - View Dependent Claims (13, 14, 15)
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16. A method of facilitating bone or joint surgery using a preoperatively designed patient-specific guidance tool, said method comprising the steps of:
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placing the guidance tool directly upon the patient'"'"'s anatomy for which it has been designed, said guidance tool providing a mating surface and a guide mechanism, said guide mechanism for guiding at least one medical instrument during bone or joint manipulation at one or more preoperatively defined trajectory relative to a patient'"'"'s anatomy, said mating surface providing positional registration of said guidance tool on said patient'"'"'s anatomy; assessing the position of the guidance tool upon the patient'"'"'s anatomy; assessing the preoperatively defined one or more trajectory governed by the guide mechanism of the guidance tool; determining whether adjustments to the guide mechanism are necessary for achieving an optimal trajectory of said at least one medical instrument; and adjusting, if necessary, the guide mechanism of said guidance tool to achieve one or more alternate trajectory for said at least one medical instrument. - View Dependent Claims (17, 18, 19, 20)
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Specification