Patent ID: 11957849
Assignee: nan
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A method of using a puncture system for catheterization,
the puncture system comprising
an outer tubular body configured to remain in a body part of a living being,
an inner tubular body, and
a puncture needle,
wherein the inner tubular body is configured to be guided through a work lumen of the outer tubular body and to be longitudinally displaceable in relation to the outer tubular body,
wherein the puncture needle is configured to be guided through a puncture lumen of the inner tubular body,
wherein the inner tubular body is configured to be longitudinally displaceable in relation to the puncture needle,
wherein the inner tubular body is a hollow Seldinger wire;

the method comprising
puncturing a body part by a puncturing portion of the puncture needle protruding from a patient-near end of the puncture system;

pushing the inner tubular body, at least in part, out of the outer tubular body from the patient-near end of the puncture system after puncturing the body part;
receiving the puncturing portion of the puncture needle protruding from the patient-near end of the puncture system, at least in part, in the puncture lumen of the inner tubular body;
advancing the inner tubular body forward in a direction inside a vein;
aspirating blood, liquid, or air through the inner tubular body, such that the orientation of the inner tubular body in the living being can be verified;
advancing the outer tubular body over the inner tubular body into the vein; and
pulling the inner tubular body out of the outer tubular body at a patient-distant end to remove the inner tubular body from the body part of the living being.