Penis Enlargement Hydrogel Implants with Negative Poisson's Ratio
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Solution Overview
Problem
Existing penis enlargement implants suffer from poor compatibility, mechanical mismatch with the penis during erection, leading to discomfort, displacement, and limited durability due to materials that degrade or cause complications.
Innovation Solution
A polyvinyl alcohol hydrogel implant with a negative Poisson's ratio structure is prepared by freeze-thaw cycles and soaking in lye, featuring customizable molds with specific unit elements to match penis deformation, enhancing mechanical properties and biocompatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional implant materials (silicone rubber, polypropylene) are used, then structural strength is improved, but biocompatibility and mechanical compliance deteriorate
Solution Approach 1:
The patent uses composite materials combining polyvinyl alcohol hydrogel with negative Poisson's ratio structures. This composite approach achieves both the required structural strength and improved biocompatibility, resolving the contradiction between traditional rigid materials that fail in either strength or compatibility
Solution Approach 2:
The patent changes the material parameters by using polyvinyl alcohol with specific molecular weights (10000-196000 Da) and alcoholysis degrees (90%-98%), and controlling concentration (12.5%-17.5%). These parameter adjustments enable the material to achieve both adequate strength and high biocompatibility
2Stability of the object's composition
If rigid implant materials are used, then implant stability is improved, but adaptability to penile deformation during erection deteriorates
Solution Approach 1:
The patent introduces dynamic adaptability by incorporating negative Poisson's ratio structures that allow the implant to deform in response to penile changes during erection. The material transitions from a static rigid state to a dynamic adaptive state, maintaining stability while accommodating deformation
Solution Approach 2:
The patent uses flexible hydrogel structures with negative Poisson's ratio characteristics that can bend and deform elastically. This flexibility enables the implant to adapt to penile deformation while maintaining structural integrity and stability
3Reliability
If biological materials (allogeneic dermal matrix, autologous fat) are used, then biocompatibility is improved, but durability and resistance to degradation deteriorate
Solution Approach 1:
The patent controls the molecular weight (10000-196000 Da) and alcoholysis degree (90%-98%) of polyvinyl alcohol to optimize the balance between biocompatibility and durability. These parameter adjustments ensure the material resists degradation while maintaining high biocompatibility
Solution Approach 2:
The patent creates local quality variations through the negative Poisson's ratio structure, where different regions of the implant have optimized properties for both biocompatibility and long-term durability, allowing the material to resist degradation while maintaining tissue compatibility
4Duration of action of stationary object
If artificial materials are used, then durability is improved, but biocompatibility and compatibility with human tissue deteriorate
Solution Approach 1:
The patent creates a composite material system where polyvinyl alcohol hydrogel provides biocompatibility while the negative Poisson's ratio structure provides durability. This composite approach resolves the contradiction between artificial material durability and tissue compatibility
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 hydrogel implant provides high compliance and stability, adapting to penile changes during erection, ensuring long-term effectiveness and safety without causing discomfort or complications.
Implementation Method 1
performing at least three freeze-thaw cycles on the mold and the polyvinyl alcohol solution to obtain a hydrogel sample
Implementation Method 2
soaking the hydrogel sample in a lye for a preset time period, and then washing to remove impurities to obtain the penis enlargement implant
Implementation Method 3
the mold having a negative Poisson's ratio structure
Data Source
AI summary
The present disclosure discloses a penis enlargement implant and a preparation method, and relates to the technical field of medical instruments. The preparation method of the penis enlargement implant comprises: loading a polyvinyl alcohol solution into a mold, the mold having a negative Poisson's ratio structure; performing at least three freeze-thaw cycles on the mold and the polyvinyl alcohol solution to obtain a hydrogel sample; soaking the hydrogel sample in a lye for a preset time period, and then washing to remove impurities to obtain the penis enlargement implant. The preparation method of the present disclosure uses a biocompatible hydrogel as a matrix material, which is not susceptible to degradation or localized fibrosis after implantation, and can be used for a long time. In addition, the penis enlargement implant obtained by the preparation method has an elongation at break of 200-400%.