Patient-Specific Osteotomy Template for Precise Tissue Resection
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Solution Overview
Problem
Current osteotomy templates used in minimally invasive surgery for prosthetic implantation are not patient-specific, leading to reduced precision and increased risk of complications due to anatomical deviations, requiring surgeons to identify anatomic landmarks, which can be challenging in pathologic conditions.
Innovation Solution
A custom-configured apparatus with a primary locating block and secondary items, including a positioning indicator and cutting guide, that are tailored to individual patient anatomy based on preoperative imaging, allowing for precise resection and modification of patient tissue for prosthetic implant placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional multi-use osteotomy templates are used, then the device can be applied to various patients, but the precision and accuracy of osteotomy are reduced due to anatomical deviations
Solution Approach 1:
The template system is segmented into patient-specific components. Each patient receives a customized osteotomy template designed based on their preoperative imaging data (CT, MRI, or radiographic images). This segmentation allows the template to precisely match the individual patient's anatomy, eliminating the compromise inherent in multi-use templates while maintaining versatility across different patients through customized designs.
Solution Approach 2:
The osteotomy template is customized to match the specific local anatomical characteristics of each patient. The template incorporates patient-specific anatomical landmarks, bone geometry, and surgical planning parameters, ensuring that the quality and precision of the osteotomy guide is optimized for that particular patient's anatomy rather than being a generic fit for multiple patients.
2Device complexity
If traditional osteotomy templates are used, then the device structure remains simple, but the operating time increases due to adjustments required during surgery
Solution Approach 1:
All necessary measurements, anatomical landmark identifications, and surgical planning are performed preoperatively using imaging data. The osteotomy template is designed and manufactured before surgery based on this preoperative planning, eliminating the need for time-consuming adjustments and landmark identifications during the actual surgical procedure. The template arrives in the operating room ready for immediate use.
3Ease of manufacture
If traditional osteotomy templates are used, then the device is easier to manufacture, but the risk of surgical errors and complications increases
Solution Approach 1:
The osteotomy template is created as a precise physical copy or representation of the patient's specific anatomy and surgical plan derived from preoperative imaging data. This copying process ensures that the template accurately replicates the desired osteotomy parameters, cutting angles, and landmark positions, thereby reducing surgical errors while the manufacturing process itself remains standardized and feasible.
Data Source
Figure 1
Figure 2A~2B
Figure 2C~2E
AI summary
An apparatus (100) for providing a reference indication to a patient tissue includes a primary locating block (102) having a patient-specific primary mating surface (106) contoured for mating contact with a portion of the tissue in a predetermined primary mating orientation custom-configured responsive to preoperative imaging of the tissue. At least one mounting feature (108) is provided to the primary locating block. At least one secondary item (104) is configured for selective engagement with the primary locating block. The secondary item is at least one of a non-customized secondary item and a patient-specific secondary item. The secondary item provides a reference indication to at least a portion of the tissue. The mounting feature of the primary locating block is configured for engagement with at least one secondary item in a predetermined secondary mounting relationship. The secondary mounting relationship is custom-configured for the tissue responsive to preoperative imaging of the tissue.