PROSTHETIC ATTACHMENT DEVICE FOR OSSEOINTEGRATED IMPLANTS
Technology is described which can provide a quick disconnect and overload protection mechanism for a prosthetic limb that is used with an osseointegrated percutaneous post. The technology can provide a way to easily don and doff a prosthetic limb. This quick disconnect may also provide a resettable torsional overload protection mechanism and/or a fusible link that may act to protect the osseointegrated percutaneous post from both axial and bending over-loads.
1 . A device, comprising:
a housing comprising a first end and a second end;
a disconnect member coupled with the first end of the housing, the disconnect member to couple with a percutaneous post that is osseointegrated in a human limb;
a ring coupled with the second end of the housing;
a fusible link coupled with the ring; and
a fastener coupled with the fusible link, the fastener to fasten the fusible link with a prosthesis.
2 . The device of claim 1 , wherein the disconnect member comprises a cap, wherein the cap is rotatably coupled with the housing.
3 . The device of claim 1 , wherein the disconnect member is configured to have the percutaneous post inserted into the disconnect member.
4 . The device of claim 1 , further comprising at least one compliant member coupled with the disconnect member, the at least one compliant member made of a compliant material or comprising a spring-loaded cam, the at least one compliant member to engage a groove in the percutaneous post.
5 . The device of claim 1 , wherein the ring comprises a spring.
6 . The device of claim 1 , wherein the ring comprises a plurality of rollers and a plurality of detents in an interior surface of the ring.
7 . The device of claim 1 , wherein a diameter of the ring and the plurality of detents are set such that for a given torsion, the ring is to distend and the plurality of rollers are to roll out of the detents for breakaway protection.
8 . The device of claim 1 , wherein the fusible link is flexible.
9 . The device of claim 1 , wherein the fusible link is removably coupled with the housing.
10 . A prosthesis connector, comprising:
a housing comprising a first end and a second end;
a cap coupled with the first end of the housing, the cap to receive a post that is implanted in a human limb;
a spring coupled with the second end of the housing; and
a link coupled with the spring, the link to be connected with a prosthesis.
11 . The prosthesis connector of claim 10 , wherein the cap is rotatably coupled with the housing.
12 . The prosthesis connector of claim 10 , wherein the spring comprises a ring shape.
13 . The prosthesis connector of claim 10 , wherein the spring comprises an interior surface comprising a plurality of detents, wherein the prosthesis connector comprises a plurality of rollers to selectively engage the plurality of detents.
14 . The prosthesis connector of claim 13 , wherein a diameter of the spring is set such that for a given torsion, the spring is to distend and the plurality of rollers are to roll out of the detents.
15 . The prosthesis connector of claim 10 , wherein the fusible link is made from a plastic material, composite material, or fiberglass material.
16 . The prosthesis connector of claim 10 , wherein the fusible link is removably coupled with the housing.
17 . The prosthesis connector of claim 10 , further comprising one or more O-rings coupled with one or more interfaces of the prosthesis connector to seal the one or more interfaces.
18 . A device, comprising:
a housing comprising a first end and a second end;
a support coupled with the first end of the housing, the support to couple with a percutaneous post;
a ring spring comprising one or more detents, wherein the ring spring is coupled with the second end of the housing;
at least one roller coupled with the ring spring; and
a carousel attached to the at least one roller and the percutaneous post support.
19 . The device of claim 18 , further comprising a prosthesis attached to the carousel.
20 . The device of claim 19 , wherein prosthesis comprises a prosthetic hand.