Abstract: The present invention is a safety shield assembly having a shield and a collar for connecting the shield to a fluid handling device whereby the shield may be pivoted with respect to the collar. Preferably, the safety shield assembly may be used with a needle assembly, an intravenous infusion set a syringe, a catheter or other fluid handling devices or assemblies that contain piercing elements. The shield includes a clip with a plurality of cannula finger locks for preventing re-exposure of the used needle.

Abstract: A captive cover for a hypodermic needle of an IV tube assembly has an elongated body connected to an element of the IV tube assembly. The elongated body is hollow and has a proximal opening, a closed distal end, a chamber, at least one locking tab and one or more optional connectors. The hypodermic needle of the IV tube assembly can be inserted through the proximal opening into the chamber. A flange on the hypodermic needle of the IV tube assembly is held in the captive cover by the locking tab. Since the hypodermic needle of the IV tube assembly only passes through the locking tab of the elongated body, the hypodermic needle of the IV tube assembly can be conveniently inserted into the elongated body. The captive cover can accommodate an ordinary hypodermic needle and has a simple structure.

Abstract: A safety needle includes a needle with a sharp end and a needle shield. The needle shield includes collapsible interlocking members, wherein one member is an end member with a hole surrounding the needle, a spring inside the collapsible interlocking members that applies an expanding force on the collapsible interlocking members, a releasable latch structure that retains the collapsible interlocking members in a collapsed state, wherein when the releasable latch structure is actuated the collapsible interlocking members expand and enclose the sharp end of the needle, and a closing structure that prevents the sharp end of the needle from exiting the hole after the collapsible interlocking members enclose the sharp end of the needle.

Abstract: A safety structure for a needle of a syringe including an external bushing connected with a base, and a barrier structure on the base contacts with the needle, which has an extended bushing on a base frame. At the front end of the bushing there is an extended cannula with an outer edge through which a needle is inserted. The external bushing is made of soft materia. A trocar boring on a front end of the base is connected with the trocar-admitting part. Moving the barrier structure away from the needle and pushing the base back, the trocar boring of the base covers outside of the outer edge of the needle. The base is fixed on the needle by friction between a wall of the trocar boring and the outer edge of the cannula.

Abstract: A medical needle shield apparatus is provided which includes an extensible shield having a first segment and a second segment extending therefrom. The second segment includes an opening configured for clearance of a medical needle of a medical needle device during attachment of the extensible shield to the medical needle device. The second segment defines a planar surface adjacent a distal portion thereof. The planar surface is configured to engage the needle for disposing the shield in an extended position. In alternate embodiment, the medical needle shield apparatus has a syringe having a needle hub supporting a needle. The first segment articulates from a collar disposed about the needle hub. The collar includes a pair of latches. The opening is configured for travel about the needle to facilitate extension of the shield from a retracted position to an extended position. The second segment further includes a proximal fulcrum that engages the needle to facilitate extension of the shield.

Abstract: A medical needle shield apparatus is provided that includes a shield that is extensible from a retracted position to an extended position to enclose a distal end of a needle. A binding member is disposed within the shield and defines binding surfaces that form an aperture configured for slidable receipt of the needle between the retracted position and the extended position. The binding member includes at least one drag-inducing member extending therefrom that is configured for slidable engagement with the needle between the retracted position and the extended position such that the at least one drag-inducing member engages the needle to create a drag force with the needle. The drag force causes rotation of the binding member relative to a longitudinal axis of the needle such that the binding surfaces engage the needle to prevent slidable movement of the needle in the extended position of the shield.

Abstract: A single use syringe (10) includes a needle (18), barrel (16), plunger assembly (20) and shield (12). The barrel (16) bears a locking member (26) which encircles the front end of the barrel (16) and is carried forward by the barrel (16) to a position where it engages the shield (12) and is retained by the shield (12) such that the locking member (26) is separated from the barrel (16) as the barrel (16) is withdrawn rearwardly after use. The locking member (26) is resilient and, after it is removed from the barrel (16), assumes a configuration which prevents subsequent forward movement of the barrel (16) within the shield (12). The barrel includes a frangible seal (30) which is broken by rearward movement of needle mount (32). The shield (12) includes a shield extender (14) for controlling the depth of penetration of the needle. The syringe can also be used to inject medicament into a IV bag via a male port as shown in FIG. 7.

Abstract: A breakable syringe with a safety sleeve has a syringe body (10), a needle (13) with a needle base (12), a safety sleeve (20), and a breaking device. The needle (13) is attached to the syringe body (10) by inserting the needle base (12) into the syringe body (10). The safety sleeve (20) slidably sleeves the syringe body (10) and clamps the breaking device with the syringe body (10). By sliding the safety sleeve (20), the safety sleeve (20) can be selectively positioned at different locations to expose or enclose the needle (13) by the multiple engaging devices and even to urge the breaking device to break the syringe body (10). Therefore, the needle (13) of the syringe is conveniently enclosed and the syringe can be immediately broken after use.

Abstract: A safety syringe has a hollow barrel, a plunger, a connector, a plug and a needle hub. The plunger has a protrusion extended from the plunger and along a longitudinal axis of the plunger. The connector is mounted around the protrusion of the plunger. Multiple limit stubs and multiple curved limit channels communicating with a corresponding notch with an inclined side-wall are respectively formed on the connector and a connecting chamber in a connecting tube of the needle hub. When the plunger is being pushed towards the needle hub, the multiple limit stubs respectively pass through the corresponding curved limit channel and are contained in the corresponding notch. The inclined side-wall of the notch will stably connect the limit stub so the plunger can stably retract the needle hub in the hollow barrel.

Abstract: The present invention provides for an injection device including a syringe with a proximal end, a distal end, a needle extending from the distal end, and a plunger inserted into the proximal end. A guard is slidable on the syringe, has a proximal end, a distal end, and is biased from a first position wherein the needle is exposed towards a second position wherein the guard covers the needle. The injection device includes first and second sets of cooperating detents for retaining the guard and syringe in the first and second positions, respectively. A latch member extends proximally from the guard that is engageable by the plunger as the plunger is depressed to release the first set of cooperating detents. Upon release, a spring element biases the guard towards the second position until the second set of cooperating detents engage and secure the guard in the second position.

Abstract: A safety syringe has a hollow barrel, a plunger, a connector, a plug and a needle hub. The plunger includes a socket to mount the connector. The connector has a needle connector protruded from the connector to connect with the needle hub. When the plunger is pushed toward the needle hub the first time, the needle hub of the connector is hidden in the socket and the plunger can not connect with the needle hub. When the plunger is pulled back and the syringe is full of medical solution, the needle hub of the connector protrudes from the socket. Pushing the plunger again toward the needle hub can connect the plunger and the needle hub together and the needle hub can retract back in the hollow barrel.

Abstract: The invention pertains to safety syringes and safety catheters designed to protect the operator from unintentional needle sticks and prevent fluid leakage after use. When the safety catheter is in operation, fluid passes from the flexible tubing through the hollow body, outlet portion, and out of the hollow needle. The hollow body includes a pair of wings to attach to the patient's skin. A needle shield fits slidably over the needle and a portion of the hollow body and includes a slot accommodating the attachable wings. The needle shield is a membrane sealed body. The shield includes an internal membrane sealing against fluid loss through the wing slots. The needle shield's first position permits the needle's tip to extend outward from the shield through a membrane. When in the second position, the needle shield extends beyond the needle's tip preventing any fluid loss.

Abstract: An automatic retraction Huber needle safety enclosure which is designed principally for a Huber needle. A Huber needle is a hypodermic needle that is in the shape of a right angle. The safety enclosure has an internal chamber which is formed between a housing and a lid with the lid being movable relative to the housing between a closed position and an open position. The Huber needle is mounted within the internal chamber. The Huber needle is movable between an extended position and a retracted position. With the Huber needle in the extended position, the Huber needle is capable of being inserted within the body of a human or animal. With the Huber needle in the retracted position, the tip of the Huber needle is to be totally confined within the internal chamber. A wing assembly is attached to the housing which functions to facilitate securement of the safety enclosure to the body of the animal or human and forming an enclosure with the wing assembly folded in abutting juxtaposition.

Abstract: The invention relates to a pre-filled injection device for injecting a liquid or semisolid composition into a subject, said injection device comprising: a housing (1) containing at its distal end the liquid or semisolid composition (2), a plunger (3) arranged to slide within the housing (1) to which is affixed a plunger stick (7) extending longitudinally from the plunger to the outside of the housing (1), a hollow needle (4) affixed to the distal end of the housing (1), said needle (4) connecting the interior part of the housing (1) with the outside where it extends longitudinally, and an airtight needle shield (5) which protects said needle (4), characterized in that said device further comprises a cap (6) designed to fit around the housing's proximal end and to fully cover said plunger stick (7), said cap (6) both preventing its accidental pushing or breakage before use and being adapted to receive the injection device once the injection into the subject has been carried out.

Abstract: An inserter having a housing, a syringe carriage slidably mounted within the housing and a syringe socket defined within the syringe carriage. The syringe carriage is able to assume a cocked position and an extended position with the latter being the position for injection. A spring biases the syringe carriage to the extended position and a latch selectively retains the syringe carriage in the cocked position.

Abstract: A safe cover device for the needle of a syringe comprising an external sleeve, a syringe clamp, a needle cap and an annular collar, of which the syringe clamp and the annular collar are combined with each other on a syringe, and the external sleeve is slipped over the syringe to completely accommodate the needle. So that when the needle cap covers the needle, stabbing of the needle and infection of germs can be avoided; thereby, the medical staff using the syringe can be protected. The device can be easily mounted and can be repeatedly used to reduce cost and get an environmental conservative effect.

Abstract: A safety needle device for protecting a user against a needle-stick injury. This needle device includes a needle housing having a distal housing opening. A needle is disposed within the needle housing and has a distal needle portion which extends away therefrom through the distal housing opening. An elongate sheath assembly surrounds the needle within the needle housing. A trigger member retains the sheath assembly within the needle housing against a force urging the sheath assembly towards the distal housing opening. The trigger member is sized and configured to release the sheath assembly from retention to allow the sheath assembly to transition towards and out of the distal housing opening via the force. This causes the sheath assembly to enclose the distal needle portion and protect the user against the needle stick injury.

Abstract: A locking mechanism 10 for a medical sharp device such as a syringe assembly 62 includes a retainer part 12 for retaining a hypodermic needle 22, and a connector part 14. The retainer part includes lugs 46 for engagement with a recess 82 formed in a neck 70 of the syringe assembly. When a plunger 72 of the syringe assembly is pushed fully forwards, the lugs 56 of the retainer part 12 engage behind a ledge 54 of the connector part 14 and the lugs 46 disengage from the recess 82. The plunger 72 may then be retracted, pulling the needle 22 into the barrel 64 of the assembly. The neck portion may be eccentrically mounted on the barrel and means 116,118 may be provided for preventing rotation of the plunger 72 in the barrel 64.

Abstract: A hypodermic syringe provides a simple mechanism for manually retracting its needle into the syringe after injection has been completed. The syringe preferably has an elastomeric barrel to exert a radial bias to seal on a retractable needle carrier and the plunger. Attachment components on the plunger and needle carrier engage such that withdrawal of the plunger releases the needle carrier for withdrawal into the syringe barrel.

Abstract: A medical needle shield apparatus is provided which is slidably movable along a medical needle from a proximal position where a distal end of the needle is exposed, to a distal position where the shield protects the distal end of the needle. The medical needle shield apparatus includes a binding member having an aperture through which the needle passes. The binding member also has binding surfaces for binding to a medical needle. The shield apparatus also includes a retainer integral with the binding member and in communication with the needle for temporarily retaining the binding surfaces in a non-binding position relative to the needle. The shield apparatus also includes a positioning member for positioning the binding surfaces to secure the shield to the needle when a portion of the retainer in contact with the needle is advanced past the distal end of the needle. A housing may be included for enclosing the shield apparatus.

Abstract: A safety needle device for protecting a user against inadvertent needle-stick injury. This needle device includes a needle housing having a distal housing opening. An arcuate groove extends within the needle housing terminating adjacent the distal housing opening. A needle is disposed within the arcuate groove having a distal needle portion extending away from the needle housing through the distal housing opening. An elongate sheath assembly surrounds the needle within the groove. A biasing member is disposed within the needle housing and is configured to move the sheath assembly throughout the length of the arcuate groove and through the distal housing opening. The sheath assembly then completely enclose the distal needle portion.

Abstract: Sharp safe hydraulic retractable syringe that is supplied with a hypodermic needle (4) fully housed within an elongated hollow barrel (2) which cannot be used until the plunger rod stop (16) has been removed and the plunger rod (1) has been pushed into the loading position to receive the required liquid into the elongated hollow barrel (2). The hydraulic retractable syringe assembly is preceded by a retractable mechanism (6-15) that is pre-assembled. The mechanism is contained by a three-legged retaining clip (11) to hold twin conical helical shape springs (14-14d) separated by a spring separation plate (15) within two spring retaining cups (12-13).

Abstract: The invention pertains to safety syringes and safety catheters designed to protect the operator from unintentional needle sticks and prevent fluid leakage after use. When the safety syringe is in operation, a plunger with an attached piston is pushed into the cylindrical bore forcing fluid through the hollow body, the outlet portion, and out of the hollow needle. A needle shield fits slidably over the needle and a portion of the hollow body. The needle shield is a membrane sealed body. The needle shield's first position permits the needle's tip to extend outward from the shield through the membrane. When in the second position, the needle shield to extends beyond the needle's tip preventing any fluid loss. When the safety catheter is in operation, fluid passes from the flexible tubing through the hollow body, outlet portion, and out of the hollow needle. The hollow body includes a pair of wings to attach to the patient's skin.

Abstract: A needle protector device comprising a protector tube slidingly disposed in an outer tube and slidingly disposed over a syringe comprising a needle, the protector tube comprising at least one abutment initially in engagement with the outer tube such that the protector tube is constrained from moving distally with respect to the syringe, a biasing device disposed inside the outer tube operative to provide an urging force on the protector tube in a direction that tends to urge the protector tube distally towards a tip of the needle, and a release mechanism operative to move the at least one abutment out of engagement with the outer tube upon distal pushing of a plunger of the syringe, such that when the at least one abutment is out of engagement with the outer tube, the biasing device urges the protector tube distally towards the tip of the needle.

Abstract: The invention relates to a medical puncturing device comprising a rigid needle being at one end adapted for facilitating the puncturing and comprising at the opposite end a hub, the hub comprising a handle part and a shield part being pivotable in relation to the handle part and further comprising locking means on the shield part and the handle part, the locking means being adapter to interlock the shield and the handle part in a pivoted position of the shield part where the rigid needle is covered by this.

Abstract: An intravenous (IV) infusion and/or blood collection assembly including a safety shield. The shield is particularly useful with winged needle assemblies. The shield is pivotally secured to the winged needle assembly to enable pivotal movement from a position away from the needle to a position enclosing the needle. The shield is lockable in a position over the used needle to prevent the user from contacting the used needle.

Abstract: The present invention relates to a safety device (2) for a prefilled syringe (1), the syringe comprising a body (3), a needle carrier (4), a piston (6) movable inside the body, and a piston rod (7) suitable for pushing the piston inside the body towards the needle carrier. The device comprises a protective sheath (10) in which the syringe body can slide between an injection position and a safe position in which the needle is withdrawn inside the sheath, said device (2) comprising a resilient element (15) suitable for acting on the syringe to bring in into its safe position after injection, said resilient element presenting two axial ends and comprising at least two elastically-deformable arms extending between said two axial ends, one of the ends (20) being arranged so as to be capable of sliding freely relative to the piston rod (7) prior to injection, and/or one of the ends being arranged in such a manner as to be capable of being fixed to the protective sheath (10) in a position of adjustable height.

Abstract: An automatically operable safety shield system for use with a syringe that comprises an inner holder in which said syringe may be inserted and an outer shield mounted outwards from the inner holder axially movable between retracted and extended positions in which a spring positioned between said inner holder and said outer shield urging the outer shield to its extended position and the inner holder having at least one first opening, distally thereto, at least one first indentation, and the outer shield having at least one first stop member engageable with the opening when the outer shield is in the retracted position engageable with the first indentation when the outer shield is in the extended position and the outer shield may be released from its retracted position by action of a trigger positioned within the inner holder or by protrusion on the syringe plunger.

Abstract: In a medical needle device having a shield for reduction of needlestick injuries, a protrusion is formed on an outer peripheral surface of a hub to which a needle is mounted, a height of the protrusion being set so that the protrusion protrudes beyond an inner diameter of a shield tube, and a gate groove is formed at an inner surface of the shield tube to extend from a front end to the vicinity of a rear end, dimensions of the gate groove being such that the protrusion can fit in a front end portion of the gate groove. In a state where the protrusion is exposed from the front end of the shield tube, the hub can rotate with respect to the shield tube. At a rotational position of the protrusion at which it does not face a front end of the gate groove, a position of the hub is limited so as not to move toward a rear end side of the shield tube due to engagement of the protrusion with a front end face of the shield tube.

Abstract: A medical needle device includes a winged shield (4) having a substantially cylindrical shaped shield cylinder (4a) and wings (5, 6) connected to the front end side thereof, a needle base (2) inserted in the shield cylinder (4a), and a needle (1). The wings have wing projections (7, 8) and the shield cylinder has through holes (9, 10) on the wall thereof. By overlaying the wings along the side surface of the shield cylinder, each of the wing projections can be inserted into the inner cavity of the shield cylinder via the through hole. Thereby, without requiring a special operation in the sticking operation, each of the wing projections can prevent the needle base from moving in the axial direction and can hold the needle base in the shield cylinder reliably in a state in which the needle protrudes from the front end of the shield cylinder by a predetermined length.

Abstract: A safety guard adapted for use with a Huber needle assembly that includes a main body, a pair of butterfly wings extending outwardly from the main body and a needle.

Abstract: A safety syringe and cap holding device for holding a syringe which also allows the syringe to be capped and uncapped while minimizing exposure of the user's hands to the hazard of needle sticks. The cap holding device can be powered electrically or mechanically, and can be selectively operated by a user.

Abstract: A medical needle shield apparatus is provided that includes a needle hub having an outer needle cannula extending therefrom. An inner needle is disposed for slidable movement with the outer needle cannula. At least one shield is extensible from a retracted position to an extended position to enclose a distal end of the inner needle. The shield includes a binding member disposed within the shield and defines binding surfaces that form an aperture configured for slidable receipt of the inner needle. The binding member includes at least one drag inducing member that engages the inner needle during slidable receipt to create a drag force. The drag force facilitates rotation of the binding member such that the binding surfaces engage the inner needle to prevent slidable movement. The binding member further includes a needle communicating surface extending therefrom that is engageable with the inner needle to prevent rotation of the binding member.

Abstract: A safety syringe device includes a tube mounted to the first end of the barrel and the needle extends through the tube. A sleeve is slidably mounted to the first end of the barrel and encloses the tube therein. A metal cover is pivotably connected to an edge of the first end of the sleeve and biased to contact the needle assembly when the sleeve is not yet pulled to its operation position. The metal cover is pivoted to seal the first end of the sleeve when the sleeve is pulled to its operation after the syringe process is completed. The needle is bent by the metal cover when pushing the sleeve back toward the barrel.

Abstract: A disposable syringe includes a tubular barrier member retained in a rear passageway of a barrel. A tubular needle seat for fixing a needle cannula is retained on the barrier member, and abuts against an abutment wall in the front passageway of the barrel while the needle cannula is disposed outwardly of the barrel. A plunger is slidable in the rear passageway, and has a seal member to seal a cavity confined in a plunger body and containing a fluid at a reduced pressure. When a pushing force applied to the plunger body moves the barrier member against the first and second frictional forces, the needle seat is released, and the seal member is ruptured, so that the needle seat and the needle cannula are suctioned into the cavity due to the pressure difference between the ambient atmosphere and the reduced pressure.

Abstract: The retractable safety syringe for drawing back a soft piston therein is comprised of a needle set, a cylindrical barrel and a plunger. A retractable mechanism is provided for pulling the needle set into it. The plunger is provided on the front end thereof with a soft piston, and with an activating piece to activate the retractable mechanism or with a connecting piece connectable to the retractable mechanism. When in assembling, the soft piston of a plunger is pushed to the top point of a space provided for injection, before deformation of the piston, an activating piece or a connecting piece on the plunger does not activate or connect with the retractable mechanism, and when the plunger is pushed by a force larger than a preset amount, the piston is compressed to deform and to render the activating piece to activate or connect with the retractable mechanism to pull the needle set into the cylindrical barrel automatically or manually.

Abstract: A safety needle includes a needle with a sharp end and a needle shield. The needle shield includes collapsible interlocking members, wherein one member is an end member with a hole surrounding the needle, a spring inside the collapsible interlocking members that applies an expanding force on the collapsible interlocking members, a releasable latch structure that retains the collapsible interlocking members in a collapsed state, wherein when the releasable latch structure is actuated the collapsible interlocking members expand and enclose the sharp end of the needle, and a closing structure that prevents the sharp end of the needle from exiting the hole after the collapsible interlocking members enclose the sharp end of the needle.

Abstract: A safety syringe comprises a barrel having a projection in a rear end thereof, a needle holder for mount of a needle, the needle holder having a dragged portion, a stopper movable in the barrel, the stopper having a drag portion adapted for engaging into the dragged portion of the needle holder and a plunger connector, a plunger for moving the stopper in the barrel having a stopper connector engaged with the plunger connector of the stopper. When pulled backwards to the end after injection, the plunger connector of the stopper is forced onto the projection of the barrel and disengaged from the plunger, enabling the plunger to be removed from said barrel.

Abstract: A medical needle device which is reusable and cooperates with a disposable needle assembly. The medical needle device includes a holder, a needle assembly, and an ejector rod cooperating with the holder. The needle assembly includes a needle hub and needle. The holder has a proximal end and a distal end and defines an opening extending therethrough. The distal end has a hub socket for receiving the hub of the needle, with the needle hub received in the socket. The ejector extends into the opening from the proximal end of the holder. The ejector rod is slidably received in the holder and has a distal end configured to engage the needle hub, and a proximal end extending outward from the holder. The ejector rod is used to eject the needle assembly from the holder.

Abstract: To prevent fluid collected at a contaminated needle from being splattered to the environment when the housing of a needle protection device is pivoted to enclose the needle, a bias member is provided in the needle protective housing to provide damping for the needle as the needle is moved within the housing. By damping the movement of the needle relative to the needle housing, splattering of the fluid that results from the jerky movements of the needle due to sudden acceleration/deceleration of the needle relative to the housing are absorbed and/or suppressed.

Abstract: An intravenous catheter introducer assembly having a safety feature to prevent accidental needle sticks. The introducer assembly includes a needle assembly having a groove disposed on its outer surface. The introducer includes a protector made of a hollow member having an open distal end and an inwardly disposed resilient flange or a clip disposed thereon. The protector is coaxially slidably disposed around the needle with the flange abutting the outer surface of the needle and adapted to engage the groove when a catheter assembly is removed from the needle.

Abstract: A syringe holder has a barrel (1) with a needle shroud (4) telescopic into its leading end and urged forwardly by a spring (5). The shroud is rotatable into several set positions, being located by snap action of a nib (18) into longitudinal grooves within a forward extension (3) of the barrel (1). An abutment (21,20) on the shroud is thereby aligned with a selected one of several abutments (12,9,14) within the barrel, these all being at different axial positions. One setting prevents needle exposure; the others permit different amounts of needle exposure as the barrel (1) is urged forwardly during an injection.

Abstract: The invention relates to a needle guard assembly for the needle part of a syringe body in the form of a needle guard that covers the needle and which is displaceable on the syringe body in the longitudinal direction, and with a grip plate being integrally formed on that end of the syringe body remote from the needle. The needle guard assembly includes a syringe body ending with a needle. A piston rod in the syringe body has a receiving part and a push-in part that telescopes into the receiving part. A syringe-body grip plate is integrally formed on the syringe body. The syringe-body grip plate opposes the needle. A needle guard is arranged longitudinally along the syringe body and covers the needle when the needle guard is displaced longitudinally.

Abstract: A retractable safety syringe that retracts the needle cannula into the plunger module and destroys the syringe to prevent reuse or an accidental needle prick by destroying the plunger barrier and the cannula barrier within the syringe. The needle cannula is released into the plunger module by shearing the cannula barrier and plunger barrier with an internal annular shear and cutter head. The needle cannula module may be replaced with a layer or smaller needle cannula module thereby allowing a greater selection of needle cannulas.

Abstract: The present invention is a safety shield assembly having a shield and a collar for connecting the shield to a fluid handling device whereby the shield may be pivoted with respect to the collar. Preferably, the safety shield assembly may be used with a needle assembly, an intravenous infusion set a syringe, a catheter or other fluid handling devices or assemblies that contain piercing elements. The shield includes a cannula channel with a finger lock for preventing re-exposure of the used needle.

Abstract: A shieldable unit dose needle assembly including a needle holding member, a unit dose needle, a shield in pivotal engagement with respect to the needle, and a collar providing pivotal engagement between the needle and the shield. The shield is pivotally movable between a retracted position and a shielded position in which a portion of the shield encompasses the unit dose needle for safety purposes. The needle holding member includes a distal end having a male tapering surface. The collar further includes a proximal end having a female tapering surface in engagement with the male tapering surface of the needle holding member.

Abstract: A disposable hypodermic syringe, which is provided with the needle fitted and sheathed, provides automatic retraction of the needle after use. The syringe may be supplied pre-charged with an injectant. The completion of the injection stroke attaches the piston to the needle carrier and subsequently dislodges a retaining ring thereby freeing the piston from the plunger and releasing stored energy of a spring or the like to draw the piston and needle carrier into the plunger. The plunger is positively retained inside the housing by the interaction of rings. Alternative methods of locating the needle carrier during use and of attaching the piston to the needle carrier to enable retraction are shown. An alternative method of retaining the piston on the plunger is also shown. A further configuration is shown affording the use of an offset needle. The syringe has optional features to prevent unwanted inward movement of the plunger and to prevent seepage of liquid after use.

Abstract: Needle tip protectors or guards, for preventing re-use of hypodermic or other needles, and/or accidental needle stick during the disposal thereof, are provided. The needle tip guard is mounted on the shaft of a needle, prior to use of the needle. The needle tip protectors or guards are provided with structures for binding or frictionally engaging against a needle shaft, after a needle has been used and the needle tip guard has been slid along the length of the used needle, until the tip of the needle is withdrawn into the interior of the needle tip guard. The needle tip protectors or guards are also provided with structures to prevent re-emergence of the needle tips out of the fronts of the guards, once the tips of the needles have been withdrawn into the guards.

Abstract: A safety hypodermic syringe includes a barrel and a base is movably received in the barrel. A cylindrical connection piece is engaged with the engaging recess. A needle cannula unit is fixed connected to the base and extends out from the barrel. A plunger has an insertion which is inserted through the hole in the connection piece and into the passage in the base. The insertion is securely engaged with the connection piece. A breaking groove is defined in an outer periphery of the plunger and located close to the second end of the plunger. The base together with the needle cannula unit are pulled in the barrel after injection and the plunger is broken to leave the needle cannula unit in the barrel.

Abstract: The present invention is a safety shield assembly having a shield and a collar for connecting the shield to a fluid handling device whereby the shield may be pivoted with respect to the collar. Preferably, the safety shield assembly may be used with a needle assembly, an intravenous infusion set a syringe, a catheter or other fluid handling devices or assemblies that contain piercing elements. The shield includes a clip with a plurality of cannula finger locks for preventing re-exposure of the used needle.