Composite Implant Scaffold Suture Load Distribution
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Solution Overview
Problem
Current soft tissue repair methods, including suturing and scaffolding, face challenges such as long recovery periods, scar tissue formation, and the need for permanent implant replacement, as well as insufficient short-term mechanical strength from scaffolding materials.
Innovation Solution
Development of biocompatible composite implants combining a scaffold made of collagen with an elongated member, such as a suture or natural tissue, to provide immediate mechanical reinforcement and support tissue regeneration, where the elongated member can bear longitudinal loads and the scaffold facilitates cellular growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scaffolding materials are used to encourage tissue regeneration, then long-term repair and recovery are improved, but mechanical strength in the short term deteriorates
Solution Approach 1:
The patent combines scaffolding material with an elongated member made of different material having higher tensile strength to create a composite implant. The scaffolding material provides porosity for tissue ingrowth and long-term regeneration, while the elongated member provides immediate mechanical strength and load-bearing capacity. This composite structure resolves the contradiction by integrating two materials with complementary properties.
2Strength
If permanent implants are used to replace damaged tissue, then mechanical strength is improved, but the need for replacement during recipient's lifetime increases
Solution Approach 1:
The patent employs biodegradable scaffolding material that gradually degrades as natural tissue regenerates and replaces it. The elongated member can be designed to degrade at a controlled rate or remain as a permanent anchor. This approach allows the implant to transition from providing mechanical support to being gradually replaced by natural tissue, reducing the need for future replacements.
3Reliability
If scaffolding materials are used to facilitate healing, then tissue regeneration is improved, but handling and placement difficulties increase
Solution Approach 1:
The patent merges the scaffolding material with an elongated member to create a single integrated implant unit. The elongated member serves dual purposes: it provides mechanical strength and acts as a handle for surgical manipulation and placement. This combination improves ease of operation during surgery while preserving the tissue regeneration capabilities of the scaffolding material.
Data Source
Figure 1
Figure 2~3B
Figure 3C~3D
AI summary
Disclosed are biocompatible implants that combine a scaffold material for supporting long term repair of a soft tissue with an elongated member such as a suture for aiding in placement of the scaffold during a surgical procedure as well as for immediate mechanical reinforcement of a repair site. The components of an implant are combined such that a longitudinal load placed upon a composite structure can be borne primarily by the elongated member and the scaffold material is isolated from the longitudinal load. Thus, the scaffold material of a composite can be protected from damage due to applied loads and stresses during and following a surgical procedure.