Safety injection needle assembly

1 . A safety injection needle assembly ( 100 ), said safety injection needle assembly ( 100 ) comprising:

an injection needle ( 110 ) affixed to a hub ( 120 ), wherein said hub ( 120 ) having a stud ( 130 ) and a receiving means ( 140 ) for receiving a syringe, and said hub ( 120 ) is affixed to a proximal end of an injection site of said injection needle ( 110 );

an inner sheath ( 150 ) having a slit ( 190 ) for receiving said stud ( 130 ), thereby positioning and retaining said injection needle ( 110 ) within said inner sheath ( 150 ); and

an outer sheath ( 220 ) and a cap ( 240 ) for housing said inner sheath ( 150 ), wherein said inner sheath ( 150 ) houses said injection needle ( 110 );

characterized in that;

said inner sheath ( 150 ) having a pair of outer studs ( 170 );

said outer sheath ( 220 ) having an outer sheath inlet ( 230 ) and said cap ( 240 ) comprises a cap inlet ( 250 ), wherein said inlets configured to complement and removably engage with said pair of outer studs ( 170 ), thereby locking said inner sheath ( 150 ) with said outer sheath ( 220 ); and

said slit ( 190 ) of said inner sheath ( 150 ) having a plurality of terminal ends ( 200 a , 200 b , 200 c ) for receiving said stud ( 130 ), thereby positioning said injection needle ( 110 ) and locking said stud ( 130 ) to retain said injection needle ( 110 );

said outer sheath inlet ( 230 ) and said cap inlet ( 250 ) are separately and independently engageable with said inner sheath ( 150 ), each of said outer sheath inlet ( 230 ) and said cap inlet ( 250 ) independently comprising a temporary locking means ( 210 a ) and a permanent locking means ( 210 b )

wherein engagement of said temporary locking means ( 210 a ) provides a releasable locking position, and engagement of said permanent locking means ( 210 b ) provides an irreversible end-use locking position, such that each of the outer sheath ( 220 ) and the cap ( 240 ) is selectively lockable to the same pair of outer studs ( 170 ) of said inner sheath ( 150 ).

2 . The safety injection needle assembly ( 100 ) as claimed in claim 1 , wherein said inner sheath ( 150 ) having a protruding surface ( 160 ) located between said pair of outer studs ( 170 ).

3 . The safety injection needle assembly ( 100 ) as claimed in claim 2 , wherein said outer sheath ( 220 ) and said cap ( 240 ) are separated by said protruding surface ( 160 ) of said inner sheath ( 150 ) in a pre-use position.

4 . The safety injection needle assembly ( 100 ) as claimed in claim 1 , wherein said inner sheath ( 150 ) comprising a stud inlet ( 180 ) for receiving said stud ( 130 ), whereby said stud inlet ( 180 ) being connected to said slit ( 190 ) of said inner sheath ( 150 ).

5 . The safety injection needle assembly ( 100 ) as claimed in claim 1 , wherein said plurality of terminal ends ( 200 a , 200 b , 200 c ) of said slit ( 190 ) including a first terminal end ( 200 a ), a second terminal end ( 200 b ) and a third terminal end ( 200 c ), whereby each of said first terminal end ( 200 a ), said second terminal end ( 200 b ) and said third terminal end ( 200 c ) of said inner sheath ( 150 ) having a locking means ( 210 a , 210 b ) for locking said stud ( 130 ).

6 . The safety injection needle assembly ( 100 ) as claimed in claim 5 , wherein said first terminal end ( 200 a ) located at a distal end relative to a stud inlet ( 180 ) and said pair of outer studs ( 170 ) of said inner sheath ( 150 ).

7 . The safety injection needle assembly ( 100 ) as claimed in claim 5 ,

wherein a stud inlet ( 180 ) is located adjacent to said third terminal end ( 200 c ) of said slit ( 190 ); and

wherein said stud inlet ( 180 ) and said second terminal end ( 200 b ) having a permanent locking means ( 210 b ) for locking said stud ( 130 ).

8 . The safety injection needle assembly ( 100 ) as claimed in claim 7 , wherein said safety injection needle assembly ( 100 ) comprising a sealing member ( 260 ) having a pair of tearable serrated lines ( 270 ) as an outermost layer, said sealing member ( 260 ) encircling a protruding surface ( 160 ) of said inner sheath ( 150 ), said outer sheath ( 220 ) and said cap ( 240 ) in a pre-use position.

9 . The safety injection needle assembly ( 100 ) as claimed in claim 8 wherein said sealing member ( 260 ) is tearable into three sections along said pair of serrated lines ( 270 ), whereby said three sections are separately attached to said protruding surface ( 160 ) of said inner sheath ( 150 ), said outer sheath ( 220 ) and said cap ( 240 ), respectively.

10 . The safety injection needle assembly ( 100 ) as claimed in claim 8 wherein said sealing member ( 260 ) has two sets of indicators ( 280 a , 280 b ) for indicating positions of said outer sheath inlet ( 230 ), said cap inlet ( 250 ), said pair of outer studs ( 170 ) within said outer sheath inlet ( 230 ) and said cap inlet ( 250 ), said permanent locking means ( 210 b ) and said second terminal end ( 200 b ).

11 . The safety injection needle assembly ( 100 ) as claimed in claim 10 , wherein a first set of indicators ( 280 a ) of said two sets of indicators ( 280 a , 280 b ) comprised on said sealing member ( 260 ) having three markings, whereby said three markings correspond to the positions of said outer sheath inlet ( 230 ), said pair of outer studs ( 170 ), and said cap inlet ( 250 ).

12 . The safety injection needle assembly ( 100 ) as claimed in claim 10 , wherein a second set of indicators ( 280 b ) of two sets of indicators ( 280 a , 280 b ) comprised on said sealing member ( 260 ) having three markings, whereby said three markings correspond to said permanent locking means ( 210 b ) on said outer sheath inlet ( 230 ), said cap inlet ( 250 ) and said second terminal end ( 200 b ).

13 . The safety injection needle assembly ( 100 ) as claimed in claim 1 , wherein said temporary locking means ( 210 a ) comprising a plurality of projections.

14 . The safety injection needle assembly ( 100 ) as claimed in claim 1 , wherein said permanent locking means ( 210 b ) comprising a unidirectional lock.