Catheter assembly

Details Catheter assembly Catheter assembly

1991-11-12

1993-04-27

Wilson, John J.

Surgery

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

Treating material introduced into or removed from body...

604280, A61M 5178

Patent

active

052058301

ABSTRACT:
Large diameter catheters for drainage of body cavities and infusion are disclosed. A removable assembly comprising a stiffening cannula, hollow dilator and wire guide facilitate insertion, reduce trauma and reduce the risk to delicate tissue. The distal tip of the stiffening cannula interfaces with a shoulder within the catheter adjacent to the tip, and insertion is accomplished by application of axial pressure on the cannula which is transmitted to the catheter via the shoulder. The tapered tip of the dilator conforms to and reinforces the pliant tip of the catheter during insertion. The catheter includes a branch line for infusion and sampling.

REFERENCES:
patent: 2828744 (1958-04-01), Hirsch et al.
patent: 3459189 (1969-08-01), Alley et al.
patent: 3698396 (1972-10-01), Katerndahl et al.
patent: 4636199 (1987-01-01), Victor
patent: 4664660 (1987-05-01), Goldberg et al.
patent: 4787884 (1988-11-01), Goldberg
patent: 4927418 (1990-05-01), Dake et al.
patent: 4986814 (1991-01-01), Burney et al.

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