Device and method for determining position of intravascular probe

Abstract

Techniques for determining a position of a distal end of a probe relative to a blood vessel are disclosed. The method includes receiving a first pressure pattern including a plurality of pressure values indicative of a fluid pressure when the distal end of the probe is within the blood vessel, processing the first pressure pattern, and determining at least one adaptive threshold and / or a trend indication. The adaptive threshold represents a transition from a first position state to a second position state, and vice versa. The trend indication represents a specific trend of the pressure mode. The first position state defines an intravascular condition in which the distal end of the probe is located within the blood vessel, and the second position state defines at least one exit condition in which the distal end of the probe is located at least partially outside the blood vessel.

Description

technical field [0001] The present invention generally relates to venipuncture, which is the procedure of gaining access to a blood vessel of a patient. More specifically, the invention relates to determining said position of an intravascular probe. Background technique [0002] References believed to be relevant to the presently disclosed subject matter are listed below: [0003] - U.S. Patent No. 3,785,367 [0004] - U.S. Patent No. 4,215,702 [0005] - U.S. Patent No. 5,314,410 [0006] - U.S. Patent No. 5,520,193 [0007] - U.S. Patent No. 5,954,701 [0008] - U.S. Patent No. 8,574,195 [0009] - US Patent Application No. 2004 / 0243007 [0010] - US Patent Application No. 2011 / 046477 [0011] - US Patent Application No. 2011 / 0060229 [0012] - US Patent Application No. 2011 / 071479 [0013] - US Patent Application No. 2012 / 0172750 [0014] The acknowledgment of the above-mentioned multiple references herein should not be inferred to imply that these references a...

AI Technical Summary

Problems solved by technology

If a clinician cannot determine whether the vessel has been punctured to the desired extent, placing a catheter in an improperly punctured vessel could result in serious injury

This may be related to another problem, where the clinician may not be able to determine exactly when to stop inserting the needle into the vessel, which may also result in damage to the vessel from the inside

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