Human surrogate neck model
A human surrogate neck model includes a spinal neck region containing cervical vertebrae. A biosimulant intervertebral material is inserted between the cervical vertebrae. The spinal neck region is surrounded by a first silicone material mixed with a polymeric cross-linking inhibitor. One or more elastic tension bands are anchored to a top interface and a bottom interface of the neck model. A second silicone material mixed with a polymeric cross-linking inhibitor is applied to surround the spinal neck region and the first silicone material and to embed the tension bands. One or more of the elastic tension bands and/or a concentration ratio of the first silicone material or second silicone material to the polymeric cross-linking inhibitor can be adjusted for variable test conditions to closely simulate or mimic the static and dynamic characteristics of a human neck in various scenarios.
1. A surrogate neck model, comprising:
a top interface;
a bottom interface disposed below the top interface;
a spinal neck region disposed between the top and bottom interfaces and comprising cervical vertebrae;
biosimulant intervertebral discs situated between the cervical vertebrae;
a first silicone material surrounding the spinal neck region;
a second silicone material disposed outside of the first silicone material; and
one or more elastic tension bands embedded in the second silicone material and anchored at the top interface and the bottom interface.
2. The surrogate neck model of claim 1 , wherein the biosimulant intervertebral discs comprise urethane.
3. The surrogate neck model of claim 1 , wherein a density of the first silicone material differs from a density of the second silicone material.
4. The surrogate neck model of claim 1 , wherein a tension of the plurality of elastic tension bands is adjustable.
5. The surrogate neck model of claim 1 , wherein the top interface comprises an interface connectable to a human surrogate head model.
6. The surrogate neck model of claim 1 , wherein the bottom interface comprises an interface connectable to a human surrogate torso model.
7. The surrogate neck model of claim 1 , wherein at least one of the first silicone material and the second silicone material comprise a silicone rubber.
8. The surrogate neck model of claim 7 , wherein the at least one of the first silicone material and the second silicone material further comprises a polymeric cross-linking inhibitor.
9. A method of making and adjusting a surrogate neck model, the method comprising:
providing a spinal neck region, comprising cervical vertebrae;
inserting a biosimulant intervertebral material between the cervical vertebrae;
surrounding the spinal neck region with a first silicone material mixed with a polymeric cross-linking inhibitor;
anchoring one or more elastic tension bands to a top interface and a bottom interface of the human surrogate neck model; and
applying a second silicone material mixed with a polymeric cross-linking inhibitor to surround the spinal neck region and the first silicone material, the elastic tension bands being embedded in the a second silicone material.
10. The method of claim 9 , further comprising adjusting the one or more elastic tension bands to mimic a muscle-relaxed state.
11. The method of claim 9 , further comprising adjusting the one or more elastic tension bands to mimic a muscle-tensed state.
12. The method of claim 9 , further comprising adjusting an amount of the polymeric cross-linking inhibitor in the first silicone material to mimic human muscle tissue.
13. The method of claim 9 , further comprising adjusting an amount of the polymeric cross-linking inhibitor in the second silicone material to mimic human skin.
14. The method of claim 9 , further comprising:
applying static and dynamic tests to the human surrogate neck model in combination with a human surrogate head model connected to the top interface; and
adjusting characteristics of the human surrogate neck model to mimic a kinematic reaction thereof to a real-life event.
15. The method of claim 14 , wherein the adjusting characteristics comprises adjusting one or more of: a) a tension of the one or more elastic tension bands, b) a ratio of the first silicone material to the polymeric cross-linking inhibitor, and c) a ratio of the second silicone material to the polymeric cross-linking inhibitor.
16. The method of claim 15 , wherein the real-life event comprises a blast or ballistic impact.
17. The method of claim 15 , wherein the real-life event comprises a vehicle crash.
18. The method of claim 15 , wherein the real-life event comprises a sports collision.