Surgery – Specula – Retractor
Reexamination Certificate
2007-07-10
2007-07-10
Robert, Eduardo C. (Department: 3733)
Surgery
Specula
Retractor
C248S222130, C403S314000
Reexamination Certificate
active
10609726
ABSTRACT:
A malleable shaft device for use in surgical procedures, having a tension fiber therein, whereby the malleable shaft transitions from a malleable state to a rigid state when a force is applied to the tension fiber, has a variable-pitch cam operatively connected to the tension fiber, and a lever operatively connected to the variable pitch cam for applying force. The mechanical advantage of the cam changes with displacement to accommodate increasing load, and to increase the rate of travel while loads are light. The force profile may provide for a constant input force to accomplish the full travel of the cam.
REFERENCES:
patent: 2510198 (1950-06-01), Tesmer
patent: 3096962 (1963-07-01), Meijs
patent: 3584822 (1971-06-01), Oram et al.
patent: 3858578 (1975-01-01), Milo
patent: 5284130 (1994-02-01), Ratliff
patent: 5348259 (1994-09-01), Blanco et al.
patent: 5513827 (1996-05-01), Michelson
patent: 5662300 (1997-09-01), Michelson
patent: 5816471 (1998-10-01), Plyley et al.
patent: 5899425 (1999-05-01), Corey Jr. et al.
patent: 5947896 (1999-09-01), Sherts et al.
patent: 6254535 (2001-07-01), Furnish et al.
patent: 6264605 (2001-07-01), Scirica et al.
patent: 6565508 (2003-05-01), Scirica et al.
patent: WO 01/50946 (2001-07-01), None
Lu Ifung
Nguyen Steven
Xiao Jia Hua
Comstock David
Ethicon Inc.
Robert Eduardo C.
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