The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 1998
Filed:
Sep. 06, 1996
Karl Becker, Duderstadt, DE;
Manfred Krukenberg, Duderstadt, DE;
Abstract
A below-knee prosthesis with a rigid, bowl-shaped outer shaft having a closed distal end, and with a flexible inner shaft which is fitted therein in a removable manner and which likewise has a closed distal end and also an air chamber which can be inflated via a valve. To improve the wearing comfort a) the inner shaft is designed as a soft silicone shaft which can be rolled over the stump of the prosthesis user and which completely surrounds the stump and bears against it; b) the air chamber of the inner shaft completely surrounds the distal end of the stump and extends only over a small partial length of the inner shaft; c) a connector plug is secured on the distal end of the inner shaft and communicates with the air chamber via a through-bore to permit air exchange; d) an insertion opening adapted to the connector plug and receiving it in a detachable manner is provided in the distal end of the outer shaft; and e) a flexible tube is connected to the insertion opening, and its tube end guided to the outside is connected to an exhaust valve and a pump.