Tube-in-tube balloon
First Claim
1. A medical balloon formed by a process comprising, obtaining an assembled tubular parison comprising:
- a first tube of orientable polymer material,a second tube formed of orientable polymer material disposed around the first tube,the first tube, or the second tube, or both, having been longitudinally pre-stretched after formation thereof but before assembly of the parison, andan adhesive layer disposed between the first and second tubes and contacting the first and second tubes, the adhesive is selected to allow relative movement of the materials of the first and second tubes during heated radial expansion of the parison to form a balloon but which subsequent to balloon formation is effective to adhere the materials of the two layers together at human body temperature, and subjecting the assembled tubular parison to radial expansion.
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Accused Products
Abstract
A tube-in-tube assembled parison for preparation of an elongated medical device. The parison if formed by assembling in tube-in-tube fashion a first tube of orientable polymer material and a second tube formed of orientable polymer material disposed around the first tube, with an adhesive tie layer disposed between the first and second tubes. The tubes are brought into contact to form a unitary parison. The adhesive may allow movement between the polymer layers during balloon blowing. The first tube, or the second tube, or both, may have been longitudinally pre-stretched after formation thereof but before assembly of the parison.
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Citations
20 Claims
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1. A medical balloon formed by a process comprising, obtaining an assembled tubular parison comprising:
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a first tube of orientable polymer material, a second tube formed of orientable polymer material disposed around the first tube, the first tube, or the second tube, or both, having been longitudinally pre-stretched after formation thereof but before assembly of the parison, and an adhesive layer disposed between the first and second tubes and contacting the first and second tubes, the adhesive is selected to allow relative movement of the materials of the first and second tubes during heated radial expansion of the parison to form a balloon but which subsequent to balloon formation is effective to adhere the materials of the two layers together at human body temperature, and subjecting the assembled tubular parison to radial expansion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification