Synthetic skin and tissue model

Patent metadata

Field	Value
Publication number	US-9514658-B1
Application number	US-201514814714-A
Country	US
Kind code	B1
Filing date	Jul 31, 2015
Priority date	Jul 31, 2014
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

A synthetic tissue model using one or more semi-flexible polymers or resin with at least one embedded mesh material is provided herein. The model provides suitable simulation of animal tissue designed to mimic tissue stiffness through varying the polymerization to simulate tissue stiffness level. Multiple polymers or multiple layers of polymer possessing different polymerization levels can be used to simulate tissues with different layers, such as skin. A mesh incorporated in the model provides durability, and can simulate layers of tissue through selection of the mesh material. A skin model using silicone-like material with a nylon tulle mesh was used to simulate skin for surgical procedures. The nylon tulle mesh increased resistance to tearing over time, due to insertion of surgical tools, thereby increasing usable life of the model and enhancing training as the model simulated skin for longer periods of time.

First claim

What is claimed is:

1. An animal tissue model, comprising:
a synthetic skin formed from at least two layers of at least one polymer material designed to simulate animal tissue, wherein the polymer material is silicone, rubber, silicone-like material, an elastomeric material, or rubber-like material;
a resin or liquid silicone binder positioned between the layers of silicone skin; and
at least one layer of mesh, wherein the at least one layer of mesh is disposed within the at least one polymer material at a distance of between 1-2 mm below surface of the polymer material;
wherein strands of the at least one layer of mesh extend beyond the synthetic skin;
a resin adhering the strands of the mesh to each other to form simulated ligaments;
wherein the synthetic skin has a stiffness of 185 N/m to 300 N/m.

2. The animal tissue model of claim 1 , wherein the at least one polymer material is polyacrylate rubber, ethylene-acrylate rubber, polyester urethane, bromo-isobutylene isoprene, polybutadiene, chloro-isobutylene isoprene, chlorosulphonated polyethylene, polychloroprene, epichlorohydrin, ethylene propylene, ethylene propylene diene monomer, polyether urethane, perfluorocarbon rubber, fluoro-silicone, fluorocarbon rubber, hydrogenated nitrile butadiene, polyisoprene, acrylonitrile butadiene, polyurethane, styrene butadiene, styrene ethylene butylene styrene copolymer, polysiloxane, vinyl methyl silicone, acrylonitrile butadiene carboxy monomer, styrene butadiene carboxy monomer, thermoplastic polyether-ester, styrene butadiene block copolymer, or styrene butadiene carboxy block copolymer.

3. The animal tissue model of claim 1 , wherein the at least one layer of mesh is polyamide, polyvinylchloride, polyvinylidenechloride, polytetrafluoroethylene, metal, or plastic.

4. The animal tissue model of claim 3 , wherein the metal is titanium, stainless steel, or surgical steel.

5. The animal tissue model of claim 3 , wherein the plastic is acrylonitrile butadiene styrene, high impact polystyrene, acrylic, cellulose acetate, cyclic olefin copolymer, ethylene-vinyl acetate, ethylene vinyl alcohol, polyvinylfluoride, polyvinylidene fluoride, polytetrafluoroethylene, polychlorotrifluoroethylene, fluorinated ethylene-propylene, perfluoroalkoxy polymer, polyethylenechlorotrifluoroethylene, polyethylenetetrafluoroethylene, perfluoropolyether, acrylic/PVC polymer, polyoxymethylene, polyamide-imide, polyaryletherketone, polybutadiene, polybutylene, polybutylene terephthalate, polycaprolactone, polychlorotrifluoroethylene, polyethylene terephthalate, polycyclohexylene dimethylene terephthalate, polycarbonate, polyhydroxyalkanoate, polyketone, polyester, polyethylene, polyetheretherketone, polyetherimide, polyethersulfone, chlorinated polyethylene, polyimide, polylactic acid, polymethylpentene, polyphenylene oxide, polyphenylene sulfide, polyphthalamide, polypropylene, polystyrene, polysulfone, polytrimethylene terephthalate, polyurethane, polyvinyl acetate, polyvinyl chloride, polyvinylidene chloride, styrene-acrylonitrile, or a combination thereof.

6. The animal tissue model of claim 5 , wherein the plastic is polyamide tulle netting mesh.

7. The animal tissue model of claim 1 , further comprising a plurality of polymer materials or a polymer material having differing polymerization levels.

8. The animal tissue model of claim 7 , wherein the plurality of polymer materials is two different polymer materials or three different polymer materials.

9. The animal tissue model of claim 1 , wherein the synthetic skin further comprises a synthetic epidermis layer and a synthetic dermis layer, wherein the synthetic dermis layer is positioned below the synthetic epidermis layer and where the synthetic dermis layer has a different stiffness than the synthetic epidermis layer.

10. The animal tissue model of claim 9 , further comprising resin or liquid silicone between the synthetic epidermis layer and the synthetic dermis layer to bond the synthetic epidermis layer and the synthetic dermis layer together.

Assignees

• Hart Stuart Richard
• Simoes Mario Alves
• Univ South Florida

Inventors

• Hart Stuart Richard
• Simoes Mario Alves

Classifications

• B29K2083/00

  Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material · CPC title

• B29C70/021

  Combinations of fibrous reinforcement and non-fibrous material · CPC title

• B29L2031/40

  Test specimens {; Models, e.g. model cars (mannequins B29L2031/7028); Probes} · CPC title

• G09B23/30 Primary

  Anatomical models {(G09B23/281 - G09B23/288 take precedence)} · CPC title

• B29K2995/0082

  Flexural strength; Flexion stiffness · CPC title