Surgery – Instruments – Internal pressure applicator
Patent
1996-01-11
1998-03-31
Dawson, Glenn K.
Surgery
Instruments
Internal pressure applicator
604 96, A61M 2900
Patent
active
057333017
ABSTRACT:
A dilatation balloon is fabricated according to a process that yields high hoop strength and uniformity in balloon wall thickness. A length of tubing is axially elongated and radially expanded in a form to provide the requisite biaxial orientation and strength. Then, an excimer laser is used to remove the polymeric material by photo-chemical ablation, virtually without thermal effects. Dilatation balloon walls are thinned primarily along tapered sections between proximal and distal balloon stems and a medial working section of the balloon. Material removal, particularly near the balloon stems, enables tighter wrapping of the balloon for a reduced delivery profile, and reduces rigidity near the stems for better maneuverability of the catheter in tortuous passageways. The balloon tapered sections are reduced to a wall thickness substantially equal to that of the medial section. Alternatively, an array of grooves is formed in each tapered section.
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Dawson Glenn K.
Schneider (USA) Inc.
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