Convertible catheter

Details Convertible catheter Convertible catheter

1992-08-04

1994-11-15

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604 53, 604247, A61M 2500

Patent

active

053643763

ABSTRACT:
The present invention is a catheter having a guidewire lumen slidable sleeve. The lumen and sleeve have aligned apertures, which may be closed by moving the slidable sleeve. When the apertures are aligned, a guidewire may be loaded from the distal end of the catheter through the lumen. The guidewire is forced out of the lumen by a ramp in the lumen. The ramp is at the end of a removable core member, which provides enhanced shaft rigidity. The catheter may be converted from a "monorail" to an "over-the-wire" configuration by moving the slidable sleeve to close the aperture and advancing a replacement guidewire through the guidewire lumen past the now sealed aperture. A non-circular cross-section is used for the lumen, removable core member, and slidable sleeve, thereby maintaining orientation of the lumen and slidable sleeve apertures should the catheter undergo rotational flexing during use.

REFERENCES:
patent: 4552554 (1985-11-01), Gould
patent: 4643712 (1987-02-01), Kulik et al.
patent: 4657536 (1987-04-01), Dorman
patent: 4748982 (1988-06-01), Horzewski et al.
patent: B14762129 (1991-07-01), Bonzel
patent: 4762129 (1988-08-01), Bonzel
patent: 5040548 (1991-08-01), Yock
patent: 5135535 (1992-08-01), Kramer
patent: 5171222 (1992-12-01), Euteneuer et al.
patent: 5180364 (1993-01-01), Ginsburg
patent: 5234407 (1993-08-01), Teirstein et al.

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