Liner donning and doffing device
View Patent ↗A device and method to aid in the donning and doffing of prosthetic liners. A vacuum is created between the device and the prosthetic liner in order to expand the prosthetic liner. The device and the liner can then be placed in position on a residual limb and the vacuum released to aid in donning the liner. To doff a liner, the device is placed in position over a residual limb carrying a prosthetic liner. A vacuum is created between the device and the liner to expand the liner in order to aid doffing.
1. A device for donning and doffing a prosthetic liner comprising:
a generally tubular receiving member having open proximal and distal ends, and defining an inner space for insertion of a prosthetic liner, the proximal end arranged for receiving a prosthetic liner;
a removable end cap sized to be removably connected and inserted within the distal open end of the receiving member in a substantially airtight manner, the inner space being configured for forming a vacuum when a prosthetic liner is received therein; and
a valve member provided to allow the selective formation and removal of a vacuum in the inner space.
2. The device of claim 1 , wherein the valve member is positioned in the end cap.
3. The device of claim 1 , wherein the valve member has a release arranged for removing a vacuum formed within the inner space when a prosthetic liner is received therein in a sealing manner with the proximal end of the receiving member.
4. The device of claim 3 , further comprising a removable vacuum pump arranged for drawing air through the valve member to form a vacuum in the inner space when a prosthetic liner is received therein in a sealing manner with the proximal end of the receiving member.
5. The device of claim 4 , wherein when a distal end of a prosthetic liner is connected to the end cap and a proximal end of the liner is folded over the proximal end of the receiving member, the vacuum pump is arranged to form a vacuum between the receiving member and the liner such that the liner expands to contact an inner surface of the receiving member; and
when the vacuum is removed via actuation of the valve release, the liner contracts to contact the skin of a user.
6. The device of claim 1 , wherein the end cap carries a connection recess and a sealing member for creating an airtight seal between the end cap and the receiving member.