One hand needle release system

Abstract

A quick release needle holder, comprises a tubular barrel having a needle receiving socket on one end, the needle receiving socket having a segmented wall defining a plurality of annular jaws having internal threads, a device for normally biasing the jaws into an inner position for threadably receiving a needle hub, and a device having finger tabs slideably mounted on the holder for releasably biasing the jaws to a needle hub releasing position.

1. A quick release needle holder for hypodermic needles, comprising:
 a tubular barrel having a longitudinal axis and a needle hub receiving socket formed integral therewith on one end;  
 said needle receiving socket having a segmented wall defining a plurality of inwardly directed annular jaws having a forward end;  
 biasing means including an annular shoulder mounted for axial movement on said jaws and including elastic means normally biasing said annular shoulder toward said forward end and said jaws inwardly to an innermost position for receiving and mounting a needle hub; and  
 said biasing means including finger operable releasing means slideably mounted on said barrel and moveable away from said forward end for biasing said jaws to a needle hub releasing position.  
 
     
     
       2. A needle holder according to  claim 1  wherein said finger operable releasing means comprises a sleeve reciprocally mounted on said barrel and having at least one finger tab extending outward therefrom. 
     
     
       3. A needle holder according to  claim 2  wherein said means for releaseably biasing said jaws to a needle hub releasing position comprises cam means carried by said sleeve. 
     
     
       4. A needle holder according to  claim 1  wherein said segmented wall includes slots and said means for releasably biasing said jaws to a needle hub releasing position comprises cam means slidable axially along said slots between said jaws. 
     
     
       5. A needle holder according to  claim 4  wherein said cam means is carried by a sleeve slideably mounted on said barrel. 
     
     
       6. A needle holder according to  claim 1  wherein:
 said segmented wall is divided by a plurality of slots into four segments; and  
 said means for releasably biasing said jaws to a needle hub releasing position comprises cam means slidable axially along said slots between said jaws.  
 
     
     
       7. A needle holder according to  claim 6  wherein said cam means is carried by a sleeve slideably mounted on said barrel. 
     
     
       8. A needle holder according to  claim 7  wherein said sleeve is biased to a forwardmost position on said barrel. 
     
     
       9. A needle holder according to  claim 8  wherein:
 said segmented wall includes an outer end and an annular shoulder at said outer end thereof; and  
 an elastic collar disposed around said segmented wall and said sleeve is biased against said annular shoulder by said elastic collar disposed around said socket.  
 
     
     
       10. A needle holder according to  claim 9  wherein:
 said sleeve is formed with a forward wall having an aperture through which said segmented wall extends; and  
 said sleeve having a front end and a back end and includes a finger tab extending outward from each side thereof at said back end thereof.  
 
     
     
       11. A needle holder having a one hand detach needle hub connector assembly, comprising:
 a generally cylindrical tubular barrel having an axis and a needle hub connector formed integral therewith on one end thereof;  
 said needle hub connector comprising a needle hub receiving socket defined by an annular axially extending wall having slots dividing said wall into segments defining a plurality of jaws having a forward end;  
 biasing means including annular shoulder mounted for axial movement on said jaws and including elastic means for normally biasing said annular shoulder toward said forward end for biasing said jaws into an innermost position for receiving and mounting a needle hub; and  
 finger operable releasing means for biasing said annular shoulder away from said forward end for biasing said jaws to a needle releasing position.  
 
     
     
       12. A connector assembly  needle holder according to  claim 11  wherein said releasing means comprises cam means slidable axially along said slots between said jaws. 
     
     
       13. A needle holder according to  claim 12  wherein said biasing means includes a sleeve and said cam means is mounted on said sleeve slideably mounted on said tubular barrel. 
     
     
       14. A needle holder according to  claim 13  wherein said sleeve includes a finger tab extending outward from each side thereof. 
     
     
       15. A needle holder according to  claim 14  wherein said sleeve is biased by an elastic collar toward forward position on said jaws. 
     
     
       16. A one hand releasable needle hub connector assembly, comprising:
 an elongated generally cylindrical tubular barrel having a needle hub connector on one end;  
 said needle hub connector comprising necked down tubular axial extension of said tubular barrel defining an annular axially extending wall and a plurality of slots dividing said wall into segments defining a plurality of jaws having a forward end;  
 a finger operable sleeve mounted on said barrel and having an annular shoulder engaging said jaws and elastic means biasing said sleeve toward said forward end for normally said jaws into an innermost position forming a socket for receiving and mounting a needle hub; and  
 said finger operable sleeve including cam means and slideably mounted on said barrel away from said forward end for biasing said jaws to a needle releasing position.  
 
     
     
       17. A needle holder according to  claim 16  wherein
 said wall is divided into four segments; and  
 said cam means comprises wedges which extend into said slots between said segments of said wall.  
 
     
     
       18. A needle holder according to  claim 17  wherein said sleeve includes a tab extending outward from opposite sides thereof. 
     
     
       19. A needle holder according to  claim 18  wherein said elastic means biasing said sleeve toward said forward end is an elastic collar disposed around said extension. 
     
     
       20. A needle holder according to  claim 19  wherein said wall segments are formed with guide means at said forward end.