Abstract: A infusion set which comprises a base (11) which is adapted to be capable of being manipulated by a user to effect insertion or removal of the infusion set and supporting a hollow needle (12) where the hollow needle has a pointed free end (18) and the other end of the hollow needle is supported from the base, a flexible delivery tube having one end connected to the other end of the needle and a portion at a position spaced from its one end being supported from a housing (14) and where a flexible duct (23) is concentrically provided over the flexible tubing (13) between the base (11). The flexible tubing being capable of slidable movement within the duct to cause slidable movement of the needle (12) in the base (11). The housing (14) has an engagement means (27) movable on the housing (14) and in engagement with the flexible tubing (13) to cause the slidable movement of the needle (12) in the base (11) between an extended position and a retracted position on movement of the engagement means.

Abstract: A syringe or like device which can be used for the conveyance of parenteral fluids which are to be introduced into or drawn from the body through the skin comprising a tubular body (11) having a forward end (26) and a rearward end (34) where the forward end is capable of receiving a hollow needle (20) to enable the needle to be able to project from the body, the needle (20) slidable relative to the body (11), the body (11) also including a chamber (14) capable of receiving a parenteral fluid and capable of being reduced in volume to expel the fluid contained therein, the needle (20) is capable of being manually retracted into the body (11) by a retracting member (28) such that the chamber reduces in volume to expel the fluid contained therein and such that the needle (20) is retracted to be wholly contained within the body (11). The needle is able to be supported at one end from the body by a plug (16) which is slidably and sealingly received in the body (11).

Abstract: An injection device comprising a hollow body (11) having a forward end (12) and a rearward end (13), the forward end (12) slidably receiving a hollow needle (15), the body (11) providing a chamber (A) between its forward end (12) and its rearward end (13), the chamber being defined between a plug (17) and a stop (18), the plug (17) being sealingly and slidably received within the body (11) adjacent the forward end (12), the stop (18) being slidably and sealingly received within the body (11) rearward of the plug (17) wherein a greater degree of effort must be applied to the stop (18) than to the plug (17) to effect slidable movement within the body, the rearward end (13) of the body having a portion (14) in which the stop (18) is not sealingly received within the body, a drive element (19) connected at one end to the plug (17) and slidingly and sealingly received through the stop (18) to extend from the rearward end (13) of the body (11), a manipulation member (20) provided on the other end of the drive eleme

Abstract: A syringe comprising a tubular body (11) closed at one end (12) and open at the other end (13), a plunger (14) receivable in the body (11) to define a chamber (16) of variable volume, a needle support (24) adapted to support and accommodate a hollow needle, said needle support (24) being supported from or in the wall of the body (11) and being movable in a direction substantially parallel to the main axis of the body (11) between a first position at which the needles extends from the one end of the body (11) and the interior of the needle is in communication with the chamber (16), and a second position at which the outer end of the needle is in a retracted position, said needle support (24) having a protrusion (28) which is selectively engageable with the wall of the body (11) at the first and second positions to be able to be retained at said positions and receivable through the wall of the body (11) when at the second position to be engaged with the plunger (14) to prevent axial movement of both the needle

Abstract: A parenteral device having a body slidably supporting a hollow needle. The needle is slidable between a first position in which it is completely retracted within the body and a second position wherein a portion of the needle projects outside of the body. The body further houses a chamber isolated from the needle when the needle is in the first position. Movement of the needle into the second position causes an end of the needle to pierce a wall of the chamber thereby establishing communication between the chamber and needle.

Abstract: A parenteral device (10) comprising a body (12) having a forward end (26) and a rearward end (34). The forward end (26) is capable of receiving a hollow retractable needle (20) therein so as to project therefrom. The retractable needle (20) is slidable relative to the body (12) and the body (12) also includes a chamber (14) capable of receiving parenteral fluid and capable of being reduced in volume to expel fluid contained therein. The needle (20) is capable of being manually retracted within the body (12) such that the chamber (14) reduces in volume to expel fluid contained therein and such that the needle (20) is retracted to be wholly contained within the body (12).

Abstract: An attachment to a parenteral device (11) where the parenteral device (11) comprises a body (12) having a duct (15) which is convey a parenteral fluid, the attachment comprising a housing (20) adapted to be removably engageable with the body (12) and to be rigidly supported by the body when in engagement therewith, the housing (20) having a flow path (22, 23) which communicates with the duct (15) on engagement of the housing with the body; a hollow needle body (26) slidably supported within the housing (20) and comprising a hollow needle having a free end; the needle body (26) is slidably received within the housing (20) for movement between a first position at which the free end is received within the housing and a second position at which the free end extends from the housing, and the needle body is movable from the second position to the first position; a retaining means (27, 32, 33) provided to retain the needle body (26) in the first or second position; the needle having a first aperture (28) provided at