Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2006-02-28
2006-02-28
Aftergut, Jeff H. (Department: 1733)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C156S169000, C156S173000, C156S308200, C156S309600
Reexamination Certificate
active
07005026
ABSTRACT:
A releasable mechanism such as a cap is adapted for use with an access sheath having an elongate tube and a handle structure disposed at a proximal end of the tube. The releasable mechanism is sized and configured to fit the handle structure, which is shaped like the bell of a horn, to further facilitate use with surgical instrumentation. The releasable mechanism may operate as a separate cap that snaps onto the handle structure to provide access pathways to the sheath. The releasable mechanism may also be disposed at a proximal end of a surgical instrument to be introduced into the access sheath such that it may be interlocked with the sheath. In a method of manufacturing a kink-resistant sheath, a wire is initially coated with a plastic material, the coated wire is then wrapped around a mandrel forming a plurality of windings, and the wound coated wire is heated until the plastic material melts and bonds the windings to form a wire-reinforced sheath. The plastic material is preferably polyurethane but may be a thermoplastic, a thermoset or any plastic material having hard and/or soft durometer. The wound coated wire may be heated by capturing the windings within a shrink tube or compressing the windings in a mold and heating the windings until the sheath is formed. In another aspect of the invention, a mandrel is used as part of an extrusion process. In another aspect of the invention, another coating or outside layer could be formed over the spring reinforcement by dipping in a solvent based solution. In yet another embodiment of the invention, a braid such as a polyester braid may be used instead of or in addition to the coil spring to form a kink-resistant sheath.
REFERENCES:
patent: 5846251 (1998-12-01), Hart
patent: 5863366 (1999-01-01), Snow
patent: 5971938 (1999-10-01), Hart et al.
patent: 6471684 (2002-10-01), Dulak et al.
patent: WO 93/15785 (1993-08-01), None
patent: WO-93/15785 (1993-08-01), None
patent: WO-93/15872 (1993-08-01), None
Adlparvar Payam
Aliahmad Wassim R.
Brustad John R
Hart Charles C
Hilal Nabil
Aftergut Jeff H.
Applied Medical Resources Corporation
Ikehara Patrick Y.
Vu Kenneth K.
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