Catheter with wire stylet
AssigneeSherwood Medical Industries Inc.
InventorsRaymond O. Bodicky, Ronald Crouther
Life of this patent
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Abstract
A catheter introducer device using a silicone rubber catheter with a stylet therein permitting introduction by manual threading of catheters which would otherwise be too flexible for individual insertion. The stylet is held at its proximal end by a hub which, with a seating ferrule, abuts a proximal end of the catheter. The hub may be pushed to wedge the catheter in an introducer cannula and is then withdrawn carrying the stylet with it, leaving the catheter in place and ready for use.
Claims10
In a manual catheter introducer having an introducer cannula having a hub with an enlarged proximal portion, the improvement comprising:
- an elongated catheter made of a soft, pliable material having a lumen throughout the length thereof;
- an enlarged proximal portion on said catheter;
- a stylet disposed within the lumen of said catheter and extending substantially the full length thereof;
- and
- seating means carried by said stylet and axially abutting said enlarged proximal portion of said catheter for seating said catheter in said introducer cannula with the enlarged proximal portion of the catheter wedged into the enlarged proximal portion of said introducer cannula.
In a catheter introducer having an introducer cannula with an enlarged proximal portion and a catheter with a stylet nested throughout the length thereof, the improvement comprising:
- an enlarged proximal end portion on said catheter;
- a hub carried by the proximal end of the stylet;
- and
- a ferrule carried by the hub and surrounding said stylet, said ferrule abutting said enlarged proximal end portion of said catheter;
- wherein said enlarged proximal end portion of the catheter is seated in the enlarged proximal portion of the introducer cannula by pushing said hub and ferrule against said catheter.
Dependencies are inferred from the claim text.