Simulated dissectible tissue

• US 10,332,425 B2
• Filed: 07/13/2016
• Issued: 06/25/2019
• Est. Priority Date: 07/16/2015
• Status: Active Grant

• Current Assignee: Applied Medical Resources Corporation (Applied Medical Corporation)
• Original Assignee: Applied Medical Resources Corporation (Applied Medical Corporation)
• Inventors: Hofstetter, Gregory K., Black, Katie
• Primary Examiner(s): Fernstrom, Kurt
• Application Number:
  US15/209,565
• Publication Number:
  US 20170018206A1
• Time in Patent Office: 1,077 Days
• Field of Search: 434262, 434267, 434268, 434272
• CPC Class Codes: G09B 23/34 with removable parts

Abstract

A simulated tissue structure for surgical training is provided. The simulated tissue structure includes a first layer made of silicone and a second layer made of silicone interconnected by a third layer made of polyester fiber that is embedded in part in the first layer and in part in the second layer to create a mechanical linkage between the first layer and the second layer. Part of the third layer that is adjacent to the first layer and part of the third layer that is adjacent to the second layer includes fiber strands coated in silicone. An inclusion that mimics an anatomical structure is located between the first layer and the second layer. The third layer of polyester fibers provides a realistic dissection plane for the practice of the surgical excision of the inclusion.

Claims

1. A simulated tissue structure for surgical training, comprising:

a first layer of silicone polymer with an upper surface and a lower surface;

a second layer of silicone polymer with an upper surface and lower surface;

the second layer being spaced apart from the first layer such that the upper surface of the first layer faces the lower surface of the second layer; and

a third layer made of a plurality of entangled fiber located between the first layer and the second layer;

the third layer being embedded in the upper surface of the first layer;

a fourth layer made of a plurality of entangled fiber located between the first layer and the second layer;

the fourth layer being embedded in the second layer at the lower surface of the second layer; and

a first inclusion located between the third layer and the fourth layer; and

a second inclusion attached to the third layer at the lower surface of the third layer;

such that the third layer defines an embedded portion that is partially embedded in the second inclusion and an extending portion that extends from the lower surface of the third layer;

the extending portion being embedded in the first layer at the upper surface of the first layer.

2. The simulated tissue structure of claim 1 wherein the third layer is made of polyester fiber.

3. The simulated tissue structure of claim 1 wherein at least part of the third layer is embedded in at least one of the first layer and the second layer while the silicone polymer is uncured.

4. The simulated tissue structure of claim 1 wherein part of the plurality of entangled fiber of the third layer is embedded in both the first layer and the second layer to create a mechanical linkage of fiber connecting the first layer and the second layer.

5. The simulated tissue structure of claim 1 wherein at least one of the first and the second inclusion is selected from the group consisting of simulated anatomical structure, organ, vasculature, nerve, tissue, tumor, prostate, prostate system, vein, vessel, and lumen.

6. The simulated tissue structure of claim 1 wherein at least one of the first layer and the second layer has a thickness of between 1.0 millimeter and 5.0 millimeters.

7. The simulated tissue structure of claim 1 wherein the first inclusion is connected to one of the first layer or the second layer.

8. The simulated tissue structure of claim 1 wherein at least part of the first inclusion is embedded in one of the first layer or second layer.

9. The simulated tissue structure of claim 1 wherein the first inclusion is located between the third layer and the fourth layer such that the first inclusion is removable.

10. A simulated tissue structure for surgical training, comprising:

a first tube defining a first lumen;

the first tube having an inner layer, an outer layer and a middle layer;

the outer layer being connected to the inner layer by the middle layer;

the middle layer being made of a plurality of entangled fiber being in part embedded in the inner layer and in part embedded in the outer layer;

a second tube defining a second lumen;

the second tube having an outer layer and an inner layer;

the first tube being located inside the second lumen; and

an inclusion located between the inner layer of the second tube and the outer layer of the first tube.

11. The simulated tissue structure of claim 10 wherein the first inclusion is configured as one or more of an artificial prostate, artificial seminal vesicles, artificial bladder, artificial urethra and artificial vas deferens.

12. The simulated tissue structure of claim 10 further including:

a third tube having an outer surface and an inner surface defining a third lumen;

the third tube being located inside the first lumen; and

a fourth tube having an outer surface and an inner surface defining a fourth lumen;

the first tube being located inside the third lumen.

13. The simulated tissue structure of claim 12 wherein the fourth tube is eccentric with respect to the third tube.

14. The simulated tissue structure of claim 10 wherein the middle layer of the first tube is made of polyester fibers and the inner layer and outer layer of the first tube are made of silicone.

15. The simulated tissue structure of claim 10 wherein the outer layer of the first tube is clear or white, the inner layer of the second tube is white polyester fiber, and the middle layer of the first tube is white.