Method of manufacture of a cannula for a medical device
First Claim
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1. A method comprising the steps of:
- coating an elongate member with a material thereby forming a coated elongate member, the coated elongate member having opposing sides;
winding the coated elongate member so that the opposing sides are facing one another;
melting the material on the coated elongate member after the winding step so that the opposing sides fuse together to form a reinforced tube having a finite length;
forming a medical device with the reinforced tube, the medical device having a wall thickness equal to or less than 0.018 inch;
inserting at least a portion of the reinforced tube into a patient; and
performing a medical procedure on the patient with the medical device after the inserting step.
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Accused Products
Abstract
An elongate member is coated with a coating, preferably by coextrusion, and the coated elongate member is wound in a helical manner around a mandrel. The coated elongate member preferably has a square cross-sectional shape so that adjacent portions of the coated elongate member engage one another when the coated elongate member is wound around the mandrel. The coated elongate member is then heated so that the coating on adjacent portions of the coated elongate member fuse together to form an integral strcucture. Another layer of material may be provided on the radially inner or outer wall of the coated elongate member.
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Citations
29 Claims
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1. A method comprising the steps of:
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coating an elongate member with a material thereby forming a coated elongate member, the coated elongate member having opposing sides; winding the coated elongate member so that the opposing sides are facing one another; melting the material on the coated elongate member after the winding step so that the opposing sides fuse together to form a reinforced tube having a finite length; forming a medical device with the reinforced tube, the medical device having a wall thickness equal to or less than 0.018 inch; inserting at least a portion of the reinforced tube into a patient; and performing a medical procedure on the patient with the medical device after the inserting step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method comprising the steps of:
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coating an elongate member with a material thereby forming a coated elongate member, the coated elongate member having opposing sides; winding the coated elongate member so that the opposing sides are facing one another; melting the material on the coated elongate member after the winding step so that the opposing sides fuse together to form a reinforced tube having a finite length; forming a medical device with the reinforced tube; inserting at least a portion of the reinforced tube into a patient; and performing a medical procedure on the patient with the medical device after the inserting step; the winding step being carried out with the coated elongate member forming a structure having a circular cross-sectional shape having a radius which varies along the longitudinal axis. - View Dependent Claims (19, 20, 21)
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22. A method comprising the steps of:
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coating an elongate member with a material thereby forming a coated elongate member, the coated elongate member having opposing sides; winding the coated elongate member so that the opposing sides are facing one another; positioning a tube on at least one of a radially inner and a radially outer side of the coated elongate member, the layer being a tube having a thickness equal to or less than 0.007 inch; melting the material and the tube so that the opposing sides fuse together and the material and the tube fuse together to form a reinforced tube having a finite length; and forming a medical device with the reinforced tube; inserting at least a portion of the reinforced tube into a patient; and performing a medical procedure on the patient with the medical device after the inserting step. - View Dependent Claims (23, 24, 25)
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26. A method comprising the steps of:
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coating an elongate member with a material thereby forming a coated elongate member, the coated elongate member having opposing sides; winding the coated elongate member so that the opposing sides are facing one another; positioning a shrink tube over the coated elongate member after the winding step, the shrink tube applying a compressive force to the coated elongate member; melting the coated elongate member after the winding step so that the opposing sides fuse together and form a matrix around the elongate member to form a reinforced tube having a finite length; removing the shrink tube after the melting step; forming a medical device with the reinforced tube, the medical device having a wall thickness of between 0.014 and 0.017 inch; inserting at least a portion of the reinforced tube into a patient; and performing a medical procedure on the patient with the medical device after the inserting step. - View Dependent Claims (27, 28, 29)
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Specification