Importance

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Abstract

An instrument for achieving rapid hemostasis at the conclusion of a catheterization procedure comprising a hemostatic agent injection device for use with a conventional introducer sheath used to gain access to the blood vessel. The injection device includes an elongated tubular member having ejection ports proximate its distal end. A hub member includes an elongated groove or track located in its surface with a transparent cover. The enclosed track is sealed from the lumen extending through the tubular member with a compliant membrane and filled with a predetermined amount of fluid. After the catheterization procedure, the device is inserted into the introducer sheath. Blood flows into the lumen of the device and pulsates against the compliant membrane. The fluid in the track pulsates within the enclosed track, clearly indicating that the ports are located in the blood vessel and subjected to variations in blood pressure. The instrument and introducer sheath are then slowly retracted as a unit in the puncture wound. The blood flow will stop pulsating against the compliant membrane when the ports have exited the blood vessel wall. A hemostatic agent is then injected by the instrument adjacent the vessel wall.

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First Claim