Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Reexamination Certificate
2005-01-13
2008-12-30
Sirmons, Kevin C. (Department: 3767)
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
C604S224000
Reexamination Certificate
active
07470260
ABSTRACT:
An administering apparatus including a casing, a reservoir, a piston accommodated in the reservoir such that it can be shifted in an advancing direction, a piston rod which acts on the piston in the advancing direction and forms a first locking mechanism, a second locking mechanism which cannot be moved counter to the advancing direction, a lock element row formed by successively arranged first locking elements, extending in the advancing direction, and formed by one of the locking mechanisms, and a second lock element formed by the other locking mechanism and engaged with the lock element row, wherein it engages with a lock element gap of the lock element row, wherein the second lock element is moved out of engagement by a movement, against an elasticity force, of the piston rod in the advancing direction, but, when engaged, counteracts a movement of the piston rod counter to the advancing direction with a resistance force greater than the elasticity force to prevent the piston rod from moving counter to the advancing direction. In some embodiments, either or both the first and second locking mechanisms form a securing element at one or both ends with respect to the advancing direction, the securing element counteracting a movement of the piston rod counter to the advancing direction with a locking force greater than the resistance force.
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Gurtner Thomas
Kirchhofer Fritz
Bruhn, Esq. David E.
Dorsey & Whitney LLP
Gilbert Andrew M
Sirmons Kevin C.
TecPharma Licensing AG
LandOfFree
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