Prosthetic attachment locking device with dual locking mechanism
View Patent ↗A prosthetic attachment locking device includes a body and a locking mechanism. The body has an axial hole that extends between a first surface and a second surface. The locking mechanism has a central axle with a pawl that communicates with the axial hole. The pawl is displaceable to selectively engage with an attachment pin received in the axial hole. The locking mechanism has a one-way clutch and a ratchet. The one-way clutch and the ratchet are formed to receive the central axle and permit one-way rotation of the pawl.
1. A prosthetic attachment locking device, comprising:
a body having an axle hole that extends between a surface and a second a surface;
a locking mechnanism having a central axle with a pawl that communicate with the axial hole, the pawl being displaceable to selectively engage with an attachment pin received in the axial hole;
the locking mechanism having a one-way clutch and a ratchet, the one-way clutch and the ratchet being formed to receive the central axle and permit one-way rotation of the pawl; and
the ratchet including a driving portion that engages with a stationary portion.
2. The device of claim 1 , wherein the one-way clutch rotatably mounts the centering axle.
3. The device of claim 1 , wherein the non-rotatably mounts the centering axle.
4. The device of claim 1 , wherein the locking mechanism includes a release bottom attached to the central axle and biased by a first compression spring.
5. The device of claim 4 , wherein the release button includes an undercut for receiving the first compression spring.
6. The device of claim 1 , wherein the stationary portion is integrally formed with the body.
7. The device of claim 1 , wherein the stationary portion is integrally formed with a sleeve of the lacking mechanism.
8. The device of claim 1 , wherein the locking mechanism includes a second compression spring that biases the driving portion into engagement with the stationary portion.
9. The device of claim 1 , wherein the body is formed from a plastic material.
10. The device of claim 1 , wherein the body is formed from an aluminum alloy.
11. The device of claim 1 , wherein the ratchet and the one-way clutch are arranged in a sleeve.
12. The device of claim 11 wherein the body includes a locking mechanism that engages the sleeve to retain the sleeve within the body.
13. The device of claim 1 , wherein the first surface of the body is formed with an integral socket adapter.
14. The device of claim 1 , further comprising a socket adapter and hollow cylindrical spacers, the hollow cylindrical spacers being arranged between the body and the socket adapter.
15. The device of claim 1 , further comprising a socket adapter having screw receiving apertures, the screw receiving apertures corresponding to a second set of through-holes formed in the body.
16. The device of claim 15 , wherein the body has no more than three of the through-holes and the through-holes are arranged in a substantially triangular configuration.
17. The device of claim 1 , wherein the attachment pin includes a pin body with a plurality of ratcheted teeth, the ratcheted teeth having a substantially flat engaging surface and a depth from an outer circumference to the pin body of approximately 1/16 of an inch.
18. The device of claim 1 , wherein the body includes a bushing that is receivable in the axial hole, the bushing having an outwardly extending flange for guiding the attachment pin into the body.
19. The device of claim 1 , wherein the one-way clutch acts as a bearing for the central axle.
20. A locking mechanism for a prosthetic attachment locking device, comprising:
a central axle having a pawl;
a one-way clutch rotatably mounting the central axle that permits one-way rotation of the central axle;
a ratchet mounting the central axle that permits one-way rotation of the central axle, the ratchet including a driving portion that engages with a stationary portion, the driving portion non-rotatably mounting the central axle; and
a release button attached to the central axle and biased by a first compression spring, the release button being moveable to displace the central axle and the pawl.
21. The locking mechanism of claim 20 , wherein the first compression spring biases the driving portion into engagement with the stationary portion.
22. The locking mechanism of claim 20 , further comprising a sleeve that receives the central axle, the one-way clutch, and the ratchet.
23. The locking mechanism of claim 22 , wherein the stationary portion is integrally formed with the sleeve.
24. The locking mechanism of claim 22 , wherein the sleeve has a threaded outer surface.
25. The locking mechanism of claim 20 , wherein the release button has an undercut for receiving the first compression spring.
26. The locking mechanism of claim 20 , wherein the one-way clutch acts as a bearing for the central axle.
27. The locking mechanism of claim 20 , further comprising a second compression spring for further biasing the release button.