Tissue Section Transfer With Hydrogel Force Mediation
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Solution Overview
Problem
Existing methods for transferring biological specimens, such as tissue sections, often cause damage due to strong contact forces during manipulation and transfer from one surface to another, making it difficult to preserve the integrity of the samples.
Innovation Solution
A system comprising a punch device with a sharp bottom edge to cut through biological samples and a receiving substrate, along with a piston array to expel the sample portion onto a receiving array, facilitating minimal damage transfer and manipulation of biological samples.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional transfer methods are used to move tissue sections between surfaces, then the transfer process can be completed, but the tissue sections suffer damage due to strong contact forces
Solution Approach 1:
The patent introduces a hydrogel layer as an intermediary between the tissue section and the attachment surface. This hydrogel layer acts as a protective mediator that reduces direct contact forces, allowing the tissue section to be transferred and manipulated without suffering damage from strong mechanical forces while still enabling effective attachment and transfer processes
2Strength
If strong contact forces are applied during transfer, then the tissue section attaches firmly to the surface, but the tissue section becomes damaged
Solution Approach 1:
The hydrogel layer serves as a mediator that provides sufficient attachment strength to the tissue section while distributing and reducing the contact forces that would otherwise directly damage the tissue. This allows firm attachment without compromising tissue integrity
Solution Approach 2:
The patent changes the physical parameters of the interface by introducing a hydrogel layer with specific viscoelastic properties. This layer can deform under stress to distribute forces, then recover to maintain attachment, effectively changing how mechanical forces are transmitted between the tissue and substrate
3Adaptability or versatility
If multiple transfer operations are performed on tissue sections, then additional analysis can be conducted, but the tissue sections accumulate damage with each transfer
Solution Approach 1:
The hydrogel layer provides a protective interface that enables multiple transfer operations between different surfaces and analysis platforms. By mediating each contact and transfer event, it prevents cumulative damage that would otherwise occur with repeated handling and transfer of the tissue sections
Data Source
AI summary
Disclosed herein, inter alia, are devices and methods for efficient transfer and analyses of cellular material, tissue samples, such as tissue sections, using carrier substrates and devices.