Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1990-06-28
1993-06-01
Woo, Jay H.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
15624418, 1563046, 264139, 264162, B29C 6506
Patent
active
052156141
ABSTRACT:
A method of making a catheter is provided. The catheter has an atraumatic portion at the distal end of a catheter having the stiffness and torque resistance required of a catheter such as that suitable for angiographic uses, typically in French sizes on the order of about 2 to about 8. The atraumatic tip portion has a generally co-axially layered structure. An inner layer is made of soft atraumatic polymer, and an outer layer is made of a polymer to impart needed stiffness and torque properties to the catheter. In the preferred embodiment, a portion of the distal tip material of the harder outer layer is removed, thereby exposing the inner, atraumatic material for initial engagement with internal body passageways.
REFERENCES:
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patent: 3890976 (1975-06-01), Bazell et al.
patent: 4385635 (1983-05-01), Ruiz
patent: 4495134 (1985-01-01), Ouchi et al.
patent: 4551292 (1985-11-01), Fletcher et al.
patent: 4596563 (1986-06-01), Pande
patent: 4636346 (1987-01-01), Gold et al.
patent: 4753765 (1988-06-01), Pande
Antoni R.
Jansman G.
Wegereef H. W.
Wijkamp A. C. J. M.
Cordis Europa N.V.
Davis Robert B.
Woo Jay H.
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