Prosthetic socket sealing system and method
View Patent ↗Prosthetic socket sealing systems and methods of use. Embodiments of the present invention include various combinations of sealing elements that are associated with a rigid prosthetic socket and act to seal the socket interior against air intrusion or escape via the open proximal end thereof. The socket interior may thus be evacuated for purposes of vacuum suspension or otherwise.
1. An apparatus comprising:
a prosthetic socket having an open proximal end configured for insertion of a residual limb, a distal end configured to reach across a distal end of the residual limb, a peripheral shoulder within the socket, a first interior periphery reaching from the shoulder to the distal end, and a second interior periphery reaching from the shoulder to the open proximal end, wherein the second interior periphery is enlarged relative to the first interior periphery to define a receiving section of the socket having a depth that is recessed outwardly from the first interior periphery to the second interior periphery;
a sealing sleeve received within the receiving section of the socket, the sealing sleeve having a distal end within the receiving section of the socket between the shoulder and the open proximal end of the socket; and
a ring-shaped inner brim received within the receiving section of the socket between the residual limb and the sealing sleeve, the inner brim having both a proximal end and a distal end within the receiving section of the socket between the shoulder and the open proximal end of the socket, and having a thickness less than the depth of the receiving section, whereby the inner brim is contained entirely within the receiving area of the socket and seals the sealing sleeve against the socket within the receiving section of the socket.
2. An apparatus as defined in claim 1 wherein the sealing sleeve has a proximal portion extending from the receiving section of the socket outward past the proximal end of the inner brim.
3. An apparatus as defined in claim 1 further comprising a liner having an open proximal end configured for insertion of the residual limb into the liner, and having a distal end configured to reach across a distal end of the residual limb, wherein the inner brim is received within the receiving section of the socket between the liner and the sealing sleeve.
4. An apparatus as defined in claim 1 wherein the liner has a proximal portion extending outward from the open proximal end of the socket past the proximal end of the inner brim.
5. An apparatus as defined in claim 4 wherein the sealing sleeve has a proximal portion extending outward from the enlarged interior periphery of the socket, and the proximal portion of the sealing sleeve overlies the proximal portion of the liner.
6. An apparatus as defined in claim 1 wherein the thickness of the inner brim is uniform between the proximal end and the distal end.