Method to make tube-in-tube balloon
AssigneeBoston Scientific Scimed, Inc.
InventorsNao Lee, Ying Xiong, Joe Khammoungkhoune, John J. Chen
Life of this patent
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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.
Claims13
An assembled tubular parison for preparation of an elongated medical device the 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, and
- an adhesive layer disposed between the first and second tubes and contacting the first and second tubes, the adhesive layer comprising a heat activatable aqueous dispersion adhesive, a heat activatable solvent based adhesive, a moisture curable adhesive, or a radiation curable adhesive the adhesive is unactivated or uncured so as to allow relative movement of the materials of the first and second tubes during heated radial expansion of the parison.
An assembled tubular parison for preparation of an elongated medical device the 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, and
- an adhesive layer disposed between the first and second tubes and contacting the first and second tubes, the adhesive layer comprising an adhesive that is a curable liquid adhesive at ambient temperature initiated or accelerated by heating, the adhesive is left unactivated so as to allow relative movement of the materials of the first and second tubes during heated radial expansion of the parison.
Dependencies are inferred from the claim text.