Implant Extraction Tool Threaded Body Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for removing osseointegrated implants, such as dental implants, are traumatic for the patient and involve significant bone damage due to their robust connection with the bone, requiring large cavity creation and prolonged recovery times.
Innovation Solution
A tool with a threaded body of decreasing diameter that is inserted into the implant's hole, applying torque to break the implant's connection with the bone, allowing for removal with minimal bone trauma and preserving the original cavity size for easier replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional drilling methods are used to remove implants, then the implant can be removed from the bone, but a large amount of bone is removed and a large cavity is created
Solution Approach 1:
The patent extracts only the implant from the bone cavity while preserving the surrounding bone structure. The removal tool is designed to engage with the implant's internal hole and apply extraction forces that separate the implant from the bone without removing bone tissue, thus extracting only the necessary component (the implant) while leaving the bone intact.
Solution Approach 2:
The patent recovers the bone tissue that would otherwise be discarded by conventional drilling methods. By using a specialized removal tool that applies mechanical forces to the implant rather than removing bone, the original bone structure is preserved and can be reused or regenerated, significantly reducing bone loss and cavity size.
2Reliability
If conventional drilling methods are used to remove implants, then the implant can be removed, but the procedure is traumatic and requires bone regeneration
Solution Approach 1:
The removal tool extracts the implant from the bone cavity through mechanical engagement with the implant's internal structure. The tool's threaded body engages with the implant's hole and applies extraction forces that separate the implant from the bone without causing trauma to the surrounding bone tissue, eliminating the need for bone regeneration procedures.
Solution Approach 2:
The removal tool acts as an intermediary between the extraction force and the implant. Rather than applying force directly to the bone (which would cause trauma), the tool mediates the extraction process by engaging with the implant's internal hole and transferring the extraction force through the implant, thus protecting the bone from direct traumatic contact.
3Ease of operation
If the cavity is made larger to facilitate implant removal, then the implant can be removed more easily, but the cavity becomes up to 30% larger in diameter than the implant
Solution Approach 1:
The removal tool is designed to engage with the implant's existing internal hole and apply extraction forces that remove the implant through its original cavity. The tool's threaded body fits within the implant's hole, allowing extraction without enlarging the cavity, thus maintaining the original cavity dimensions and avoiding unnecessary bone removal.
4Device complexity
If a threaded body with constant diameter is used, then the tool structure is simpler, but the threaded body cannot be properly attached to the internal walls of the hole
Solution Approach 1:
The threaded body features a variable diameter design where different sections have different diameters optimized for specific functions. The smaller diameter section allows engagement with the implant's internal hole, while the larger diameter section provides enhanced attachment strength to the internal walls. This local variation in geometry optimizes both engagement and attachment without requiring complex additional components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the removal of implants with minimal bone trauma and smaller cavity size, reducing recovery time and avoiding risks associated with conventional methods like bone nerve or adjacent implant damage.
Implementation Method 1
The threaded body is meant to be introduced in the hole of the implant and threaded (forcing a thread) into the internal walls of said hole
Implementation Method 2
The head provides the means of attaching a system capable of providing torque to the implant removal tool
Data Source
Figure 1~4
Figure 5~8
Figure 9~12
AI summary
Implant removal tool (1) which allows removing an implant (5) from a patient's bone (6). The implant removal tool (1) comprises a head (2), to which a torque-providing system is attached, and a threaded body (4) preferably with a decreasing diameter. The threaded body (4) preferably has a thread to the left and is intended to be threaded into the hole (7) of the implant (5). The extraction of the implant (5) is relatively simple to carry out, removing the implant (5) in an almost clean manner and leaving a very small cavity (13) in the patient's bone (6). Therefore, the implant removal tool (1) according to the invention makes the removal of an implant (5) a far less traumatic procedure for the patient.