High pressure catheter balloon
AssigneeAdvanced Cardiovascular Systems, Inc.
InventorsMurthy V. Simhambhatla, Venu Ghanta, Timoteo Tomas
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Abstract
A balloon formed of a single layer of polybutylene terephthalate and polytetramethylene ether glycol terephthalate copolymer in a substantially unblended form. The copolymer has a flexural modulus of greater than about 150,000 psi. The presently preferred copolymer is Hytrel® 8238 by DuPont. The balloon would be substantially unblended, defined as greater than about 60% by weight to about 100% by weight of the copolymer. The balloon is formed in a series of molds. The balloon exhibits high rupture pressure and low compliance coupled with good lesion cross and recross ability.
Claims28
An inflatable single layered balloon for a medical device comprising a polymeric material, the polymeric material being a substantially unblended copolymer of polybutylene terephthalate and polytetramethylene ether glycol terephthalate, the copolymer having a flexural modulus of greater than about 150,000 psi.
An intraluminal balloon catheter, comprising:
- a) an elongated shaft having a proximal end, a distal end, an inflation lumen extending within at least a portion of a distal shaft section to a location spaced proximally from the distal end;
- and
- b) a single layered balloon for a medical device comprising a polymeric material, the polymeric material being a substantially unblended copolymer of polybutylene terephthalate and polytetramethylene ether glycol terephthalate, the copolymer having a flexural modulus of greater than about 150,000 psi.
A method for implanting a stent within a patient, comprising
- a) advancing within the patient's vasculature a catheter having a balloon on a distal shaft section, the balloon has a flexural modulus of about 150,000 psi to about 300,000 psi and the balloon is formed from a substantially unblended copolymer of polybutylene terephthalate and polytetramethylene ether glycol terephthalate, the copolymer having a flexural modulus of greater than about 150,000 psi;
- b) positioning the catheter so that at least a length of the balloon is across a non-dilated region within the patient's vasculature;
- and
- c) expanding the balloon to simultaneously dilate the undilated lesion and implant the stent.
Dependencies are inferred from the claim text.