Pump mechanism for vacuum suspension system
AssigneeOssur Hf
InventorDavid SANDAHL
Life of this patent
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Abstract
A vacuum suspension system includes a pump mechanism operatively connectable to a prosthetic socket. The pump mechanism has a first member and a second member. An inflatable bladder is disposed between the first and second members. A fluid chamber is located between the first and second members and fluidly separate from the inflatable bladder. Inflation of the inflatable bladder mechanically separates the first and second parts to create a vacuum pressure in the fluid chamber.
Claims20
A vacuum suspension system comprising:
- a pump mechanism operatively connectable to a prosthetic socket, the pump mechanism including:
- a first member;
- a second member;
- an inflatable bladder disposed between the first and second members;
- and
- a fluid chamber located between the first and second members and fluidly separate from the inflatable bladder, wherein inflation of the inflatable bladder mechanically separates the first and second parts to create a vacuum pressure in the fluid chamber.
The system of claim 11, wherein the first member defines a locking feature and the resilient member defines a corresponding detent arranged to selectively lock in the locking feature.
A vacuum suspension system comprising:
- a pump mechanism operatively connectable to a prosthetic socket, the pump mechanism including:
- a first member;
- a second member;
- a resilient member connecting the first and second members;
- an inflatable bladder disposed between the first and second members;
- and
- a fluid chamber located between the first and second members and fluidly separate from the inflatable bladder, wherein inflation of the inflatable bladder mechanically separates the first and second parts to create a vacuum pressure in the fluid chamber.
A vacuum suspension system comprising:
- a pump mechanism including:
- a base member;
- a housing pivotally connected to the base member;
- an inflatable bladder disposed between the housing and the base member;
- a fluid chamber located between the housing and base member and fluidly separate from the inflatable bladder, wherein inflation of the inflatable bladder mechanically separates the housing and the base member to increase a volume of the fluid chamber and create a vacuum pressure in the pump mechanism;
- and
- a pressure source fluidly connected to the inflatable bladder and separate from the pump mechanism, the pressure source arranged to selectively compress and force fluid into the inflatable bladder to separate the housing and the base member.
Dependencies are inferred from the claim text.