Responsive biomechanical implants and devices
Prosthetic devices allow for full articulation of the joint, while absorbing impact of the components during normal use that will reduce wear on the device components and prolong life. The device may include a bone implantable component and a bearing component having an articulation surface that is sized and shaped to substantially mate with at least a portion of the bone implantable component and a damping mechanism that includes a contact member disposed at least primarily inside a cavity; a biasing member biasing the contact member toward an upper aperture of the cavity and means for capturing the contact member within the cavity.
1. A prosthetic device, comprising:
a bone implantable component;
a bearing component having an articulation surface sized and shaped to substantially mate with at least a portion of the bone implantable component at an interface; the articulation surface comprising a damping mechanism comprising an interaction component and a flexible component;
wherein, the flexible component biases the interaction component away from the articulation surface; and
wherein, in use, an initial force received by the bearing component is partially transferred to the interaction component, thereby causing an alteration in the flexible component, the alteration resulting in at least a partial dissipation of the force.
2. The prosthetic device of claim 1 , wherein the damping mechanism is disposed within a cavity in the articulation surface, wherein the cavity comprises an upper aperture, wherein the upper aperture is smaller than the interaction component such that the interaction component cannot completely pass through the upper aperture.
3. The prosthetic device of claim 2 , further comprising a cushion disposed within the cavity between the interaction component and the upper aperture.
4. The prosthetic device of claim 3 , wherein the cushion comprises open celled polyurethane.
5. The prosthetic device of claim 1 , wherein the damping mechanism is disposed within a cavity in the articulation surface, the cavity comprising an endcap; wherein the endcap prevents the interaction component from exiting the cavity.
6. The prosthetic device of claim 5 , wherein the endcap is coupled to the cavity by at least one of: adhesive, fusing, friction, and threading.
7. The prosthetic device of claim 5 , wherein adjustment of the endcap alters an amount of force acting on the interaction component provided by the flexible component.
8. The prosthetic device of claim 5 , further comprising a cushion disposed within the cavity between the interaction component and the endcap.
9. The prosthetic device of claim 8 , wherein the cushion comprises open celled polyurethane.
10. The prosthetic device of claim 1 , wherein flexible component is at least one of a flat spring, a helical spring, a coil spring, and a volute spring.
11. The prosthetic device of claim 10 , wherein the flexible component is a coil sprint.
12. The prosthetic device of claim 1 , wherein the articulation surface is coated with a damping adhesive, the adhesive comprising a three-dimensional nanoparticle dispersed therein, wherein, in a use configuration, the initial force received upon the articulation surface from the bone implantable component causes the nanoparticle to compress from a natural expanded state to a compressed state, the nanoparticle subsequently returning to its expanded state, thereby imparting an opposing force on the bone implantable component which is less than the initial force received by the articulation surface thereby reducing an amount of wear at the interface of the articulation surface and the bone implantable component.
13. The prosthetic device of claim 12 , wherein the three-dimensional nanoparticle comprises a spheroidal molecule or a geodesic dome.
14. The prosthetic device of claim 12 , wherein the three-dimensional nanoparticle comprises a carbon-based three-dimensional structure.
15. The prosthetic device of claim 14 , further comprising a magnetizable wrap configured to apply a magnetic field to the damping adhesive.
16. The prosthetic device of claim 15 , wherein the magnetizable wrap comprises at least one sensor, and wherein the sensor is configured to provide a signal to actuate the magnetizable wrap to apply the magnetic field to the damping adhesive.
17. The prosthetic device of claim 16 , wherein the sensor is selected from the group consisting of an accelerometer, an ohmmeter, a motion detector, a hall effect sensor, a thermocouple, a p-n junction, and a Peltier junction.
18. The prosthetic device of claim 1 , wherein the articulation surface comprises a plurality of damping mechanisms.
19. The prosthetic device of claim 1 , wherein the flexible component is a foam.
20. The prosthetic device of claim 1 , wherein the interaction component is generally spherical.