Title:
FAIL-SAFE ATTACHMENT FOR PROSTHETIC LIMB
Document Type and Number:
WIPO Patent Application WO/2011/128674
Kind Code:
A3
Abstract:
A fail-safe attachment is provided for coupling an exoskeletal prosthesis to a patient limb having a bone anchored mounting post with an external fixation structure (1). The fail-safe attachment comprises a first component (2) adapted for connection to the fixation structure, and a second component (3) adapted for connection to the prosthesis. A safety release mechanism is provided normally retaining the prosthesis in a rigid substantially motion-free interconnected relation to the fixation structure, said safety release mechanism responding to a force overload condition to permit relative movement between the prosthesis and the fixation structure. The safety release mechanism comprises a bending force release mechanism responsive to a bending force overload condition to permit the separation of the second component (3) relative to said first component (2). The bending force release mechanism comprises a plurality of spring loaded jaws (37) adapted to engage a complementary portion (12) of the other component, the jaws (37) being pivotable in an over-centre spring configuration between a first position in which they engage the complementary portion (12) to secure the first and second components one to the other, and a second position in which the first and second components are able to separate.
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Inventors:
WOZENCROFT ROBERT MICHAEL (GB)
ORME KATRINA (GB)
ORME KATRINA (GB)
Application Number:
PCT/GB2011/050716
Publication Date:
December 01, 2011
Filing Date:
April 12, 2011
Export Citation:
Assignee:
STANMORE IMPLANTS WORLDWIDE LTD (GB)
WOZENCROFT ROBERT MICHAEL (GB)
ORME KATRINA (GB)
WOZENCROFT ROBERT MICHAEL (GB)
ORME KATRINA (GB)
International Classes:
A61F2/78
Domestic Patent References:
| WO2007018904A2 | 2007-02-15 |
Attorney, Agent or Firm:
MAUGHAN, Sophie et al. (45 Grosvenor RoadSt Albans, Hertfordshire AL1 3AW, GB)
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