Guided Bone Implant Placement With Additive Site Preparation
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Solution Overview
Problem
Current methods for implant placement in bone surgery often cause damage to the implantation site due to subtractive preparation techniques, leading to weakened tissue and increased reliance on bone grafts, especially in patients with osteoporosis or other bone-weakening conditions, and are prone to inaccuracies and high costs.
Innovation Solution
A kit comprising an implantable object with a bone-engaging element and a guiding device that provides precise positioning and retention, along with a recipient site preparation instrument, to minimize site damage and improve accuracy, using custom production based on CAT scan data and an adhesive composition for secure implantation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If subtractive preparation methods (drilling or milling) are used to prepare the implantation site, then the site is prepared with appropriate geometric and mechanical characteristics, but damage is inflicted to the implantation site through removal of useful sound bone, resulting in weakened surrounding tissue
Solution Approach 1:
The patent inverts the conventional subtractive approach by using an additive method: a form-giving instrument is inserted into the implantation site and bone-implantable material is applied around it to create the desired geometric characteristics without removing bone tissue. This reverses the traditional drilling/milling process and eliminates bone removal damage.
Solution Approach 2:
The form-giving instrument serves as an intermediary tool that defines the geometric shape of the implantation site without directly removing bone. The bone-implantable material acts as a mediator that fills the space around the instrument, creating the final site geometry while preserving surrounding healthy bone tissue.
2Reliability
If conventional implant placement methods are used, then implants can be placed in healthy bone, but they are not available for patient populations susceptible to bone fracture or breakage, such as those with moderate to severe osteoporosis
Solution Approach 1:
The patent changes the fundamental parameters of implant placement by transitioning from a subtractive to an additive approach. This allows the procedure to be adapted for patients with osteoporosis and weakened bone, expanding the patient population who can receive implants while maintaining reliability through the form-giving instrument and bone-implantable material.
3Measurement precision
If CT scan data and virtual models are used for guided implant surgery, then accurate placement can be achieved, but high expense and time-consuming procedures are required
Solution Approach 1:
The patent extracts and eliminates the complex CT scan data acquisition, virtual modeling, and guided surgery apparatus from the implant placement process. The form-giving instrument directly provides the necessary geometric definition without requiring extensive preoperative imaging and planning, significantly reducing procedure time while maintaining accuracy.
4Measurement precision
If guided surgical devices are used for implant placement, then accurate positioning can be achieved, but stable fixation of the guide during radiographic exposure and accurate placement into the surgical site are difficult to maintain
Solution Approach 1:
The form-giving instrument is self-servicing in that it directly defines the implantation site geometry without requiring separate guide devices. The instrument itself becomes the reference for accurate placement, eliminating the need for separate radiographic guides and their associated fixation and placement challenges.
Data Source
AI summary
Embodiments of the disclosure relate to implantable objects and guiding devices, as well as recipient site preparation instruments, bone-implantable materials, and methods of fabrication and use thereof.