Quick release needle coupling system

Claim 2

A quick release needle coupling for hypodermic needles, comprising: a tubular barrel having a needle hub receiving socket on one end; said needle hub receiving socket having an outer wall formed with axially extending slots into a segmented wall defining a plurality of inwardly directed annular jaws; said jaws normally biased inwardly to an innermost position for receiving and mounting a needle hub; releasing means slidably mounted on said needle hub receiving socket for biasing said jaws to a needle hub releasing position; and an ejector means mounted on said needle hub receiving socket and responsive to engagement by said releasing means for biasing a needle from said needle hub receiving socket.

Claim 3

A needle coupling according to claim 1 wherein said releasing means for releaseably biasing said jaws to a needle hub releasing position comprises a ring and cam means carried by said ring.

Claim 4

A needle coupling according to claim 2 wherein said ejector means comprises a ring reciprocally mounted on said needle hub receiving socket and having at least one finger extending inward therefrom.

Claim 5

A needle coupling according to claim 1 wherein said means for releaseably biasing said jaws to a needle hub releasing position comprises cam means slidable axially along said slots between said jaws.

Claim 6

A needle coupling according to claim 4 wherein said cam means comprises a ring slideably mounted on said needle hub receiving socket.

Claim 7

A needle coupling according to claim 1 wherein: said wall is divided by said slots into six segments; and said means for releaseably biasing said jaws to a needle hub releasing position comprises cam means slidable axially along said slots between said jaws.

Claim 8

A needle coupling according to claim 6 wherein said cam means comprises a ring slideably mounted on said needle hub receiving socket.

Claim 9

A needle coupling according to claim 7 wherein said segmented wall has an outer end and an inner end and said ring is normally positioned in at said needle hub receiving outer end on said socket.

Claim 10

A needle coupling according to claim 8 wherein: said needle hub receiving socket is defined by a tubular wall which includes an annular shoulder at said outer end thereof; and said ring is normally biased against said shoulder.

Claim 11

A needle coupling according to claim 9 wherein: said means for releaseably biasing said jaws to a needle hub releasing position comprises a ring surrounding said needle hub receiving socket and cam means carried on an inner diameter of said ring; and said ejector means comprises a plurality of fingers carried by said ring and extending inward therefrom through said slots.

Claim 12

A quick release needle connector, comprising: a generally cylindrical tubular barrel having a needle hub connector extending coaxially therefrom on one end; said needle hub connector comprising a needle hub receiving socket defined by an annular axially extending wall divided by a plurality of axially extending slots into a plurality of segments having internal thread segments and defining a plurality of jaws; said jaws normally biased into an innermost position for receiving and mounting a needle hub; releasing means slideably mounted on said needle hub receiving socket for biasing said jaws to a needle hub releasing position; and and ejector means mounted on said needle hub receiving socket and responsive to engagement by said releasing means for biasing a needle from said needle hub receiving socket.

Claim 13

A quick release needle connector, comprising: a generally cylindrical tubular barrel having a needle hub connector extending coaxially therefrom on one end; said needle hub connector comprising a needle hub receiving socket defined by an annular axially extending wall divided by a plurality of axially extending slots into a plurality of segments having internal thread segments and defining a plurality of jaws; said jaws normally biased into an innermost position for receiving and mounting a needle hub; releasing means slideably mounted on said needle hub receiving socket for biasing said jaws to a needle hub releasing position; and and ejector means mounted on said needle hub receiving socket and responsive to engagement by said releasing means for biasing a needle from said needle hub receiving socket.

Claim 14

A needle connector assembly according to claim 11 wherein releasing means for releaseably biasing said jaws to a needle hub releasing position comprises a ring and a plurality of cams carried by an inner diameter of said ring.

Claim 15

A needle connector according to claim 12 wherein said ejector means comprises a ring reciprocally mounted on said needle hub receiving socket and having a plurality of fingers extending inward therefrom through said slots for engagement with a needle hub for ejecting the needle.

Claim 16

A needle connector according to claim 13 wherein: said wall is divided into six segments; and said means for releaseably biasing said jaws to a needle hub releasing position comprises cam means slidable axially along said slots between said jaws.

Claim 17

A needle connector according to claim 14 wherein: said means for releaseably biasing said jaws to a needle hub releasing position comprises a ring surrounding said needle hub receiving socket and cam means carried on an inner diameter of said ring and extending into said slots between said segments; and said ejector means comprises a plurality of fingers carried by said ring and extending inward therefrom through said slots for engagement with said needle hub.

Claim 18

A quick releasable needle hub connector assembly, comprising: an elongated generally cylindrical tubular barrel having a generally tubular needle hub connector extending coaxially on one end; said needle hub connector comprising necked down tubular axial extension of said tube defining an annular axially extending wall divided by slots into segments defining a plurality of jaws; said jaws normally biased into an innermost position forming a socket for receiving and mounting a needle hub; and finger operable sleeve including cam means slideably mounted on said barrel for biasing said jaws to a needle releasing position.

Claim 19

A quick releasable needle hub connector assembly, comprising: an elongated generally cylindrical tubular barrel having a generally tubular needle hub connector extending coaxially on one end; said needle hub connector comprising necked down tubular axial extension of said tube defining an annular axially extending wall divided by slots into segments defining a plurality of jaws; said jaws normally biased into an innermost position forming a socket for receiving and mounting a needle hub; and finger operable sleeve including cam means slideably mounted on said barrel for biasing said jaws to a needle releasing position.

Claim 20

A needle connector assembly according to claim 16 wherein: said finger operable sleeve comprises a ring and a plurality of cams on an inner diameter of said ring; and said ejector means comprises a ring reciprocally mounted on said socket and having a plurality of fingers extending inward therefrom through said slots for engagement with a needle hub for ejecting the needle.