Perforated Membrane for Bone Augmentation
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Solution Overview
Problem
Current methods for tissue augmentation, particularly in dental applications, face challenges such as limited bone regeneration and complications during the insertion of devices like bags filled with bone augmenting materials, especially in sensitive areas like the posterior region of the lower jaw, where the mental nerve is at risk of damage.
Innovation Solution
A device comprising a sheet with a perforated region for bone ingrowth and a soft tissue blocking region to prevent interference, where the perforated side is bioresorbable and the blocking side is non-resorbable, allowing safer insertion and enhanced bone regeneration, and can be used for various tissue types including cartilage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bag filled with bone augmenting material is inserted into a subperiosteal tunnel, then bone regeneration can be achieved, but the mental nerve may be damaged during insertion
Solution Approach 1:
A flexible membrane is introduced as an intermediary device that can be inserted through a larger opening and then expanded to the desired size within the subperiosteal space. This allows the membrane to be placed without directly manipulating or risking damage to the mental nerve, while still achieving the bone regeneration function by providing a barrier and supporting bone graft material
Solution Approach 2:
The membrane is inserted in a collapsed or folded state through a larger opening before being expanded to its final size and shape. This preliminary insertion in a compact form allows access to the treatment area without requiring direct manipulation of the nerve region, thereby reducing nerve damage risk while enabling subsequent bone regeneration
2Reliability
If a membrane is used to maintain bone graft in place and prevent soft tissue ingrowth, then bone regeneration is supported, but the surgical operation becomes more complex
Solution Approach 1:
The membrane is provided as a pre-formed device that can be inserted as a single unit and then expanded in situ. This segmentation of the device into an insertable core and an expandable body simplifies the surgical procedure by avoiding the need to assemble multiple components during surgery, while still providing the necessary functions of maintaining bone graft and preventing soft tissue ingrowth
Solution Approach 2:
The use of a flexible membrane that can be inserted in a collapsed state and then expanded to form the desired barrier structure simplifies the surgical procedure. The flexible nature allows easy insertion through a larger opening without requiring complex assembly steps, while the expanded form effectively maintains bone graft and prevents soft tissue ingrowth
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
The device facilitates safer insertion and more effective bone regeneration by preventing soft tissue ingrowth and ensuring proper bone growth, improving treatment outcomes for tissue augmentation in sensitive areas.
Implementation Method 1
The perforated side is bioresorbable and the blocking side is non-resorbable, allowing safer insertion and enhanced bone regeneration
Implementation Method 2
a soft tissue blocking region to prevent interference
Data Source
AI summary
Devices, method to produce devices and methods to perform bone augmentation using a bag having two membranes on one side and one membrane on the other side which is preferably perforated. The bag can be filled with bone augmenting material. The bag can be used in the jaws while placing the side with the one membrane towards the jaw bone and the side with the two membranes towards the gingiva.