An injection needle device for use with an endoscope, said device comprising: a handle (105, 205, 405, 605, 805, 905) having a cylindrical body, an exterior surface, a proximal end, and a distal end; a first locking member (115, 215, 415, 615, 815, 915) on said exterior surface of said handle; a compressible spring within said cylindrical body of said handle; an actuator (110, 210, 410, 610, 810, 910) having a proximal end and a distal end, wherein said actuator is coupled at its proximal end to the distal end of said cylindrical body of said handle; a sheath (150, 250, 350, 550, 750, 1050) having a proximal end and a distal end, wherein said proximal end of said sheath is attached to said distal end of said cylindrical body of said handle; a spring coil (160, 260, 360, 560, 760, 1060) positioned within said distal end of said sheath; a drive shaft (353, 553, 753, 1053) extending through said cylindrical body of said handle and said sheath and having a first lumen, a proximal end, and a distal end, wherein said proximal end of said drive shaft attaches to said distal end of said actuator and wherein said distal end of said shaft extends within said spring coil; a needle (455, 555, 655, 755, 855, 955, 1055) attached to said distal end of said drive shaft; characterized in that a second locking member (111, 211, 411, 611, 811, 911) is positioned on said actuator (110, 210, 410, 610, 810, 910) and having a plurality of locking components, each of said locking components being separated by an interval; and a collar (165, 265, 365, 465, 565, 665, 765, 865, 965, 1065) is positioned within said distal end of said sheath (150, 250, 350, 550, 750, 1050) distal to said spring coil (160, 260, 360, 560, 760, 1060) and having a proximal end and a distal end, wherein, when said actuator is advanced into said cylindrical body of said handle (105, 205, 405, 605, 805, 905), said first locking member (115, 215, 415, 615, 815, 915) traverses said plurality of locking components of said second locking member and intervals therebetween, engaging one of the plurality of locking components of said second locking member to lock said actuator in place and said proximal end of said actuator telescopes into said body of said handle and compresses said compressible spring causing said drive shaft (353, 553, 753, 1053) to move within said sheath and said needle (455, 555, 655, 755, 855, 955, 1055) to move from a first position to a second position, separated by a distance, wherein the distance is a predefined distance that is determinable based upon a number of said intervals traversed by the first locking member, further wherein said spring coil and said collar stabilize lateral movement of said needle and provide for longitudinal movement of said needle. a handle (105, 205, 405, 605, 805, 905) having a cylindrical body, an exterior surface, a proximal end, and a distal end; a first locking member (115, 215, 415, 615, 815, 915) on said exterior surface of said handle; a compressible spring within said cylindrical body of said handle; an actuator (110, 210, 410, 610, 810, 910) having a proximal end and a distal end, wherein said actuator is coupled at its proximal end to the distal end of said cylindrical body of said handle; a sheath (150, 250, 350, 550, 750, 1050) having a proximal end and a distal end, wherein said proximal end of said sheath is attached to said distal end of said cylindrical body of said handle; a spring coil (160, 260, 360, 560, 760, 1060) positioned within said distal end of said sheath; a drive shaft (353, 553, 753, 1053) extending through said cylindrical body of said handle and said sheath and having a first lumen, a proximal end, and a distal end, wherein said proximal end of said drive shaft attaches to said distal end of said actuator and wherein said distal end of said shaft extends within said spring coil; a needle (455, 555, 655, 755, 855, 955, 1055) attached to said distal end of said drive shaft; characterized in that a second locking member (111, 211, 411, 611, 811, 911) is positioned on said actuator (110, 210, 410, 610, 810, 910) and having a plurality of locking components, each of said locking components being separated by an interval; and a collar (165, 265, 365, 465, 565, 665, 765, 865, 965, 1065) is positioned within said distal end of said sheath (150, 250, 350, 550, 750, 1050) distal to said spring coil (160, 260, 360, 560, 760, 1060) and having a proximal end and a distal end, wherein, when said actuator is advanced into said cylindrical body of said handle (105, 205, 405, 605, 805, 905), said first locking member (115, 215, 415, 615, 815, 915) traverses said plurality of locking components of said second locking member and intervals therebetween, engaging one of the plurality of locking components of said second locking member to lock said actuator in place and said proximal end of said actuator telescopes into said body of said handle and compresses said compressible spring causing said drive shaft (353, 553, 753, 1053) to move within said sheath and said needle (455, 555, 655, 755, 855, 955, 1055) to move from a first position to a second position, separated by a distance, wherein the distance is a predefined distance that is determinable based upon a number of said intervals traversed by the first locking member, further wherein said spring coil and said collar stabilize lateral movement of said needle and provide for longitudinal movement of said needle.