Importance

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Abstract

The present invention provides an improved introducing-dilating catheter which may also be applied to facilitate insertion of catheters of all types and functional purposes. The catheter has a tapered portion which is, in turn, connected to a bevelled tip portion to facilitate insertion of the catheter into a pre-existing puncture aperture. The bevelled tip portion is finished to remove any points capable of puncturing or any edges capable of injuring the tissues by the application of only a small force. Indicia means are provided to enable the practitioner using the introduction-dilation catheter to determine the orientation of the tip of the catheter so that the leading point of the bevelled tip will initiate engagement with the vascular puncture cut and enter the vessel in the acute angle formed between the guide wire and the vessel wall. Additionally, after entry of the entire tip, the indicia means allow the introducing catheter to be reoriented so as to keep the bevel parallel to the wall of a vessel.

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First Claim