Hip Replacement Incision Locator Device
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Solution Overview
Problem
Current methods for determining the proper incision location during hip replacement surgery are often inaccurate and unreliable, leading to increased blood loss and prolonged recovery times due to variability in surgeon technique and reliance on palpation or estimation.
Innovation Solution
The development of a 'V' or guitar-shaped incision locator device that aligns with the femoral axis and greater trochanter, using palpation, fluoroscopy, or anatomical measurements to ensure precise placement of the initial incision, with adjustable angles to accommodate individual patient anatomy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If surgeons use palpation or estimation methods to determine incision location, then the surgical procedure can be performed with simple tools, but the accuracy and reliability of incision placement deteriorates
Solution Approach 1:
The locator device incorporates a curved surface that conforms to the anatomical curvature of the patient's hip region. This curved design allows the device to properly align with the femoral axis and greater trochanter landmarks, improving measurement accuracy while maintaining ease of use through simple placement on the patient's body.
Solution Approach 2:
The device transitions from a simple linear measurement tool to a two-dimensional curved surface with multiple reference points and markings. This dimensional enhancement provides multiple alignment options and reference lines for determining the precise incision location, thereby improving accuracy without significantly increasing operational complexity.
2Reliability
If surgeons rely on past experience and educated guesses for incision placement, then the surgical approach can be quick and simple, but the reliability and consistency of results deteriorates
Solution Approach 1:
The locator device provides pre-marked reference lines, angles, and alignment indicators that are prepared in advance. These pre-established guides eliminate the need for surgeons to perform complex calculations or rely on memory during surgery, ensuring consistent and reliable incision placement while reducing the time required for localization.
Solution Approach 2:
The device serves as an intermediary tool that translates anatomical landmarks (femoral axis, greater trochanter) into precise incision location markings. This mediator function provides a systematic bridge between anatomical assessment and surgical execution, improving reliability without adding significant time burden.
3Object-affected harmful factors
If incorrect incision placement occurs, then the surgical procedure can proceed quickly, but the harmful effects such as blood loss and recovery time increase
Solution Approach 1:
The device replaces subjective manual palpation and estimation with an objective mechanical alignment system. By using physical guides, reference lines, and anatomical landmarks, the system provides precise, repeatable measurements that reduce errors in incision placement, thereby minimizing harmful effects like excessive blood loss and prolonged recovery.
Data Source
AI summary
Methods and devices for performing hip replacement surgery are described. According to one embodiment, a method comprising providing an incision locator, the incision locator comprising at least one location indicator and at least one incision indicator, the location indicator configured to align with a central axis of the femur, and the incision indicator configured to guide a proper placement of a surgical incision when the location indicator is aligned, aligning the location indicator with at least one anatomical feature of the patient, making an incision in the proper location as guided by the incision indicator, and completing the surgical procedure is described.