Vacuum suspension system

Patent metadata

Field	Value
Publication number	US-9364348-B2
Application number	US-201414192949-A
Country	US
Kind code	B2
Filing date	Feb 28, 2014
Priority date	Mar 1, 2013
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

A vacuum suspension system includes a rigid socket defining a socket wall having exterior and interior surfaces. The socket defines an aperture extending between the exterior and interior surfaces, and has a closed distal end and an open proximal end with an interior cavity defined by the interior surface. A fluid regulator is provided at the aperture and operatively engages the fluid regulator. A pump system includes a pump and a covering for securing over the exterior surface of the socket and carrying the pump. The pump is configured for placement proximate to the fluid regulator and arranged for drawing air from the socket through the aperture. A chamber having a variable volume is formed by a space defined between the exterior surface and an inner surface of the covering proximate to the pump.

First claim

The invention claimed is:

1. A vacuum suspension system, comprising:
a rigid socket defining a wall having exterior and interior surfaces, and an aperture extending between the exterior and interior surfaces, the socket having a closed distal end and an open proximal end, the socket forming an interior cavity defined by the interior surface;
a fluid regulator provided at the aperture;
a pump system including a pump and a covering for securing over the exterior surface of the socket and supporting the pump, the pump configured for placement proximate to the fluid regulator and arranged for drawing air from the socket through the aperture and operatively engaging the fluid regulator;
a chamber having a variable volume and formed by a space defined between the exterior surface and an inner surface of the covering proximate to the pump;
wherein the pump system includes a handle operatively connected to the fluid regulator and arranged for being adjusted for drawing air from the socket cavity;
wherein the covering is arranged to permit escape of air from the chamber upon release of the handle, and forms a one-way valve with the exterior surface of the socket.

2. The vacuum suspension system of claim 1 , wherein the pump system includes activation means for expanding and decreasing the volume of the chamber.

3. The vacuum suspension system of claim 1 , wherein the covering is arranged to seal against the exterior surface of the socket and selectively prevent escape of air from an interface formed between the covering and the exterior surface.

4. The vacuum suspension system of claim 2 , wherein the covering is air impermeable and seals against the exterior surface of the socket at least in an area proximate to and extending over the aperture.

5. The vacuum suspension system of claim 1 , wherein the chamber is defined by a dome formed between the exterior surface of the socket and the inner surface of the covering.

6. The vacuum suspension system of claim 1 , wherein the covering has at least one portion adapted to channel air from the chamber to the atmosphere.

7. A kit for a vacuum system for connection to a rigid socket having a wall defining exterior and interior surfaces, the socket defining an aperture extending between the exterior and interior surfaces, the socket having a closed distal end and an open proximal end, comprising:
a fluid regulator arranged to be provided at the aperture;
a pump configured for placement proximate to the fluid regulator and arranged for drawing air from the socket through the aperture and operatively engaging the fluid regulator;
a covering for securing over the exterior surface of the socket and forming a chamber having a variable volume defined between the exterior surface and an inner surface of the covering proximate to the pump;
wherein the pump includes a handle arranged for operating the fluid regulator and arranged for being adjusted for drawing air from the socket cavity;
wherein the handle is generally elastic and returns to a predetermined first position both prior to and at release thereof, as the handle is pulled away from the exterior surface of the socket.

8. The kit of claim 7 , wherein the covering is generally air impermeable and has a least a portion permit escape of air from the chamber to atmosphere.

9. A vacuum suspension system, comprising:
a rigid socket defining a wall having exterior and interior surfaces, and an aperture extending between the exterior and interior surfaces, the socket having a closed distal end and an open proximal end, the socket forming an interior cavity defined by the interior surface;
a fluid regulator provided at the aperture;
a pump system including a pump and a covering for securing over the exterior surface of the socket and supporting the pump, the pump configured for placement proximate to the fluid regulator and arranged for drawing air from the socket through the aperture and operatively engaging the fluid regulator;
a chamber having a variable volume and formed by a space defined between the exterior surface and an inner surface of the covering proximate to the pump;
wherein the pump system includes a handle operatively connected to the fluid regulator and arranged for being adjusted for drawing air from the socket cavity;
wherein the handle is generally elastic and returns to a predetermined first position both prior to and at release thereof, as the handle is pulled away from the exterior surface of the socket.

10. A vacuum suspension system, comprising:
a rigid socket defining a wall having exterior and interior surfaces, and an aperture extending between the exterior and interior surfaces, the socket having a closed distal end and an open proximal end, the socket forming an interior cavity defined by the interior surface;
a fluid regulator provided at the aperture;
a pump system including a pump and a covering for securing over the exterior surface of the socket and supporting the pump, the pump configured for placement proximate to the fluid regulator and arranged for drawing air from the socket through the aperture and operatively engaging the fluid regulator;
a chamber having a variable volume and formed by a space defined between the exterior surface and an inner surface of the covering proximate to the pump;
wherein the covering is substantially more flexible than the exterior surface of the socket.

Assignees

• Ossur Hf

Inventors

• Sandahl David

Classifications

• A61F2/68

  Operating or control means · CPC title

• A61F2002/742

  Human Necessities · mapped topic

• A61F2002/805

  having an air valve · CPC title

• A61F2002/802

  Suction sockets, i.e. utilizing differential air pressure to retain the prosthesis on the stump · CPC title

• A61F2/80 Primary

  Sockets, e.g. of suction type · CPC title