Peripheral IV catheter with enlargeable flashback chamber

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United States of America Patent

PATENT NO 4772267
SERIAL NO

07031944

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An improvement is set forth in a peripheral IV catheter assembly which comprises a needle hub having proximal and distal ends and a central bore having a flashback chamber, blood in said chamber being observable through said needle hub. A needle extends from the distal end of the bore. A catheter hub fits about the needle and has its proximal end held by the distal end of the needle hub. A cannula fits about the needle with its proximal end engaged with the distal end of the catheter hub. A flashback plug has proximal and distal ends. Its distal end can engage with the proximal end of the needle hub in blocking relation to the needle hub bore. A protector has a proximal end engagable with the distal end of the needle hub with the passage about the catheter hub, the needle and the cannula. The improvement comprises wherein the distal end of the protector is engageable with the proximal end of the needle hub with the central passage in the protector in flow communication with the central bore in the needle hub. The protector is such that blood in the passage is observable through the protector. The flashback plug is adapted intermediate its ends to engage in the passage in the protector. The flashback chamber is extended by connecting it to the central passage in the protector. Also, the flashback plug can be used in the protector to protect against contamination.

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Patent Owner(s)

Patent OwnerAddress
MENLO CARE INCPALO ALTO CA

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brown, Ronald C Santa Cruz, CA 10 524

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