Abstract: An insertion device and insertion set. The insertion device for inserting at least a portion of at least one piercing member of an insertion set through the skin of a patient includes a device housing, a carrier body and a driver. The carrier body is slidably received within the device housing for movement between an advanced position and a retracted position. The carrier body also includes a receiving structure to support the insertion set in a position with the at least one piercing member oriented for insertion through the skin of the patient at a predetermined or variable angle relative to the skin of the patient upon movement of the carrier body from the retracted position to the advanced position.

Abstract: An insertion device and insertion set. The insertion device for inserting at least a portion of at least one piercing member of an insertion set through the skin of a patient includes a device housing, a carrier body and a driver. The carrier body is slidably received within the device housing for movement between an advanced position and a retracted position. The carrier body also includes a receiving structure to support the insertion set in a position with the at least one piercing member oriented for insertion through the skin of the patient at a predetermined angle relative to the skin of the patient upon movement of the carrier body from the retracted position to the advanced position.

Abstract: An injection device houses a syringe and contains a drive spring, to urge the syringe forwards to project its needle and then eject the dose, and a return spring, to push the syringe back into the housing and retract the needle. A trigger is operated in one way to release the drive spring and in another way to release the return spring, these operations being mutually exclusive and there being parts for ensuring they are performed in the correct order.

Abstract: A gas-powered, durable, needle-free hypodermic jet injection device includes a hand-held injector which carries a disposable injection cartridge with a volume of liquid medication to be injected in the form of a high velocity jet capable of penetrating the skin without the use of a hypodermic needle. The injection device provides an injection orifice, and an injection piston. Forceful movement of the injection piston caused by high pressure gas causes a high velocity injection jet of liquid medication to be expelled from the injection cylinder via the injection orifice. The injection device includes features which improve its safety, and also which improve its ease of manufacture, its durability, and its cost effectiveness.

Abstract: An injector is automatic in that the needle is injected automatically into the injection site (e.g., a patient's skin), delivery is initiated upon activation of the injector, and the needle is retracted after the end of delivery. Preferably the needle is not seen by the user prior to, during or after injection. Prior and to and after injection, the needle is withdrawn into the device so as to avoid any potential injury or health risk to the user or health care provider. The injector includes a housing and a control unit arranged to slide within the housing to move a piston rod during drug delivery and to pivot within the housing for needle retraction. The injector may also include a back rod that moves the piston rod before activation of the injector for titration and reconstitution and automatically disengages from the piston rod upon activation of the injector. A needle-locking device can be used in any number of pen-like injectors or other types of injectors or syringes.

Abstract: The invention relates to methods and devices for delivering medicament by jet injection to an injection site in a patient. The method includes inserting a needle into an insertion point, wherein the needle has a length of less than 5 mm and is operatively associated with an orifice in a nozzle assembly in fluid communication with an ampule chamber containing the medicament. The needle extends less than about 5 mm from the nozzle assembly orifice when the medicament is expelled. Next, a force generating mechanism is activated, and a pressure wall member that is operatively associated with the force generating member moves in response to the activation of the force generating mechanism at a speed sufficient to jet inject the medicament from the ampule chamber through the orifice and needle under a pressure of less than about 4000 psi to deliver a substantial portion of the medicament through the needle and past the insertion point to the injection site.

Abstract: A needle assisted jet injector and method for jet injecting medicament are disclosed. In one embodiment of the injector, the needle is retractably located within an injector nozzle assembly. Upon activation of the energy source, a portion of the needle extends past the nozzle assembly and penetrates the outer layer of skin to deliver the medicament via jet injection to a deeper region. After activation, the needle retracts back into the nozzle assembly. In another embodiment, the needle is fixed to the end of the nozzle assembly. In both embodiments, the length of the portion of the needle that penetrates the skin is less than 5 mm.

Abstract: An insertion device and insertion set. The insertion device for inserting at least a portion of at least one piercing member of an insertion set through the skin of a patient includes a device housing, a carrier body and a driver. The carrier body is slidably received within the device housing for movement between an advanced position and a retracted position. The carrier body also includes a receiving structure to support the insertion set in a position with the at least one piercing member oriented for insertion through the skin of the patient at a predetermined angle relative to the skin of the patient upon movement of the carrier body from the retracted position to the advanced position.

Abstract: A spring-actuated infusion syringe includes a housing having an open distal end, with a spring-loaded piston disposed for axial translation in the housing. The piston is biased toward the distal end of the housing. The syringe also includes a barrel for containing a liquid medicament, the barrel having a distal end having a fluid passage therethrough and an open proximal end. A plunger is disposed in the barrel for axial translation therein. The proximal end of the barrel is axially insertable into the distal end of the housing, whereby the piston enters the proximal end of the barrel and engages the plunger. In use, the barrel is filled with a medicament through the fluid flow passage, and the flow of medicament from the syringe is obstructed. The proximal end of the barrel is inserted into the distal end of the housing, whereby the piston enters the proximal end of the barrel.

Abstract: An automatic needle retraction device includes a housing and retraction device for completely retracting a needle back into the housing after use. A selector switch device includes an equalization part, which produces a negative pressure to accept the fluid compressed during the retraction of the hollow needle. Thus, during retraction of the needle, compressed injection solution is not sprayed outward from the needle.

Abstract: A pen shaped syringe with automatic needle insertion has an injection system integrally displaceable in a housing and comprising a basic part carrying a medicine reservoir with a hypodermic needle at its distal end, and a dosing mechanism with a carrier engaging a cogged piston rod, the carrier being coupled to a dose spindle in a rotatable but not displaceable way. The dose spindle is provided with a thread engaging a thread in a sequence part having protrusions engaging slots in the basic part to allow a limited axial movement of the parts in relation to each other, the extent of the movement being defined by the rotational position of the dose spindle. A spring is compressed between the basic part and the housing when the basic part is moved in the proximal direction by exerting a cocking force on the sequence part which part after having performed the set limited axial movement in relation to the basic part carries this basic part against the force of the spring.

Abstract: A device and method for rapid access to the bone marrow for the infusion of drugs and other fluids into the bone marrow; sampling the bone marrow; and monitoring the physical properties of the blood and bone marrow. These operations may proceed sequentially or simultaneously. A "smart" controller may be utilized to direct or control these operations. An implantable intraosseous needle assembly and various means for injecting, utilizing, and extracting that assembly into a bone containing bone marrow are disclosed.

Abstract: A device and method for rapid access to the bone marrow for the infusion of drugs and other fluids into the bone marrow; sampling the bone marrow; and monitoring the physical properties of the blood and bone marrow. These operations may proceed sequentially or simultaneously. A "smart" controller may be utilized to direct or control these operations. An implantable intraosseous needle assembly and various means for injecting, utilizing, and extracting that assembly into a bone containing bone marrow are disclosed.

Abstract: A device for introducing an active substance solution into a patient and with means for fastening to the skin and a cannula. The cannula is held in a withdrawn position by a retaining and releasing mechanism before use and, after release, is propelled into the patient's skin. A connector connected to the rear of the cannula serves to connect the cannula to an active substance reservoir.

Abstract: A device for automatically injecting a material into the body is disclosed. The device includes a drive assembly and a disposable assembly including a syringe which is mounted to the drive assembly. The drive assembly includes a drive rod, a driver releasably coupled to the drive rod, and a spring which urges the drive rod towards the syringe assembly. The spring first urges the coupled drive rod and driver along the axis of the device, causing the skin to be penetrated by the needle of the syringe assembly. The drive rod is then decoupled from the driver. The spring continues to urge the drive rod in the axial direction, whereby the drive rod engages a piston in the syringe assembly and causes the displacement of the material therein. A cap is removably mounted to the disposable assembly. Locking members on the cap and disposable assembly prevent removal of the cap until the disposable assembly is moved to the firing position within the drive assembly.

Abstract: An automatic injector comprises a housing, a tubular cartridge disposed in the housing, the cartridge having a rearward portion thereof with a predetermined inner diameter and an inwardly extending shoulder connecting a forward portion of the cartridge with a smaller inner diameter than the predetermined diameter. A charge of liquid medicament is normally disposed in the cartridge, and a needle is disposed within the housing and adapted to communicate with the medicament through a forward end of the cartridge to dispense the medicament therethrough. A plunger disposed within the cartridge and rearwardly confines the medicament and has a rearward portion with a diameter sized to form a seal with the predetermined inner diameter of the rearward portion of the cartridge. The plunger is movable forwardly through the cartridge in slidingly sealed relation with respect thereto to displace the medicament through the needle.

Abstract: A system is provided that is useful for a hypodermic jet injection of medication without piercing the skin with a needle. The system includes a spring actuated needleless hypodermic injector device for injecting medication through the skin. The injector device includes an ampule assembly having a chamber for holding liquid medication and an injector for receiving and mounting the ampule assembly. A plunger assembly, movable within the ampule chamber is used for drawing liquid medication into the ampule chamber and for ejecting liquid medication out from a chamber. The injector includes a spring actuated piston which provides a force to move the ampule assembly plunger and thereby force liquid medication to leave the chamber at such velocity that it can be hypodermically injected at an injection site. The system also includes a coupler for use on a medication vial for transferring medication to the ampule assembly.

Abstract: A modular fluid medication injection assembly (10) includes a medicant module (12) and an activator module (14). The medicant module (12) holds a replaceable, disposable syringe subassembly (24). The activator module (14) contains a driver (56) and driver release (70) for deployment and injection of the syringe subassembly. The modular design permits the use of various-sized medicant modules (12) to accommodate different sized syringe subassemblies (24) and dosages of fluid medication. Additionally, spare modules (12) may be kept on hand for administering multiple dosages from the same syringe subassembly. A carrying case (166) for the injection assembly (10) is also disclosed.

Abstract: A device to insert hypodermic syringe needles into the skin at such velocity as to render the penetration of said needle undetectable by the body therefore painless for the patient. The device to consist of a sleeve or tube (hereafter called sleeve) and elastic bands, the internal diameter of the sleeve to be slightly larger than the hypodermic syringe barrel in order to act as a guide for the hypodermic syringe barrel, one end of the sleeve is left open the other end is closed off, there being a small hole in the exact center of the closed end the hole is large enough for the needle to pass through but too small for the hypodermic syringe barrel this closed end of the sleeve is enlarged to absorb the shock of the hypodermic syringe barrel as it is stopped by the closed end of the sleeve and has places on the exterior of it for attachment of elastic bands which provide the energy to propel the hypodermic syringe barrel and needle.

Abstract: An injection device includes a generally tubular outer body and a medicament cartridge assembly carried within the outer body. The cartridge assembly includes a glass container, a charge of medicament disposed within the glass container, iii) a plunger member rearwardly confining the medicament, and iv) a seal for sealing the forward portion of the glass container. A needle has a rearward end disposed proximate the seal, with the seal and needle being movable with respect to one another. A rigid needle cover member is normally maintained in an inoperative position and is movable relative to said body to a protective position wherein the needle cover member extends forwardly to cover the forward end of the needle.

Abstract: A syringe is provided for injecting multiple sequential dosages of a liquid medicine includes a single actuator for initiating a penetration and injection sequence. The syringe hereof is adjustable for different dosages while providing for physical selection of a desired, predetermined dosage. The syringe includes a retraction mechanism for withdrawing the needle into a protective collar after administration of the dosage. The syringe receives a vial for administering multiple dosages without the necessity of replacing the vial after each administration.

Abstract: A needle hiding shield to be coupled to a conventional dose metering syringe to hide a hypodermic needle from view of a patient (e.g. a child) to whom an injection is to be administered so as to minimize the anxiety that will be experienced by the patient. According to a first embodiment, the needle hiding shield includes an inner anchoring sleeve that surrounds a medication cartridge housing and an opaque outer sleeve guard that shields a hypodermic needle and is coaxially aligned with and coupled to the inner anchoring sleeve by a pair of springs. An injection is administered when the medication cartridge housing is advanced distally through the outer sleeve guard to cause the springs to be stretched and the needle to be moved outwardly of the outer sleeve guard to penetrate the targeted injection site.

Abstract: There is provided a lancet assembly having a holder and a lancet structure which is incorporated with the holder, the lancet structure containing a lancet member having a pricking member and an ejector which ejects the lancet member, wherein an exposed portion of the pricking member is covered with a resin. In a preferred embodiment, a lancet body and a covered pricking member have portions mating each other so that the lancet body and the covered pricking member tightly engage with each other. In another preferred embodiment, at least one notch is provided to the covered pricking member. In a further embodiment, the covered pricking member contains two pairs of stops on its outside.

Abstract: A hypodermic needle shield to be coupled to a conventional dose metering syringe to hide a hypodermic needle from view of a patient (e.g. a child) to whom an injection is to be administered so as to minimize the anxiety that will be experienced by the patient. The needle shield includes an inner anchoring sleeve that surrounds and is coupled to a medication cartridge housing and an opaque needle guard that surrounds and shields the hypodermic needle that is connected in fluid communication to the medication cartridge housing. A pair of locking keys projects from the needle guard for receipt in respective guide tracks formed in the inner anchoring sleeve.

Abstract: An injection device holds a syringe in the form of a capsule having a needle projecting from its forward end and a plunger extending from its rear end. The rear end of the plunger received in the drive member, which, when released, is urged forward by a coil spring, thus projecting the needle and expressing the dose. The drive member is held captive in its rearward primed position by a detent provided by the body of the device. A sleeve covering a substantial part of the body can shift longitudinally of it from an initial rearward position to a forward position in which it either disengages the drive member from the detent, or in which a trigger is freed from actuation to release the drive member.

Abstract: A reloadable automatic or manually usable medicine injection apparatus having a barrel which receives a syringe subassembly. The syringe subassembly includes an ampule for housing fluid medication, a needle, a plunger stopper, and plunger shaft which allow removal and manual use. The injection apparatus includes a driver for forcing the syringe subassembly to inject the needle and displace fluid medication. The injection apparatus preferably includes a trigger handle, sheath remover, and removable stop system for delivery of multiple doses.

Abstract: A medicament injection apparatus for subcutaneous or intramuscular delivery of a medicament conceals the needle behind a needle shroud. On apparatus activation, the needle is trust forward, pushing the needle tip outside the needle shroud with enough force to puncture the skin. The needle is thus automatically introduced into the tissue at the proper needle.backslash.skin orientation. In the same action, the apparatus automatically dispenses an accurate pre-set dose. The dose can be set by a manual, variable dosing assembly or by an automatic dosing assembly. The automatic dosing assembly includes a safety mechanism preventing the pre-set dose from being changed except by a doctor or patient using a special wrench or tool.

Abstract: An injection device (10) is adapted to receive a cartridge (11) holding injection fluid (12). This cartridge (11) is displaceable in the proximal direction in the injection device counter to the force of a resetting spring (157). An adjustable-length tappet (80) is biased in the proximal direction by a spring (53), is displaceable in the injection device between a proximal end position and a distal end position, and has a threaded spindle (19) which is guided in the thread (17) of an adjusting member (15), serves to act upon a plunger (23) provided in the cartridge (11), and has a guide member (67) associated with it; the guide member is connected to it in a manner fixed against relative rotation but axially freely displaceably. This guide member (67) is rotatable relative to the housing (100) of the injection device (10) in the distal end position of the tappet (80), but not in the proximal end position thereof.

Abstract: A device for automatically injecting a material into the body is disclosed. The device includes a drive assembly and a syringe assembly which is mounted to the drive assembly. The drive assembly includes a drive rod, a driver releasably coupled to the drive rod, and a constant force spring which urges the drive rod towards the syringe assembly. The spring first urges the coupled drive rod and driver along the axis of the device, causing the skin to be penetrated by the needle of the syringe assembly. The drive rod is then decoupled from the driver. The spring continues to urge the drive rod in the axial direction, whereby the drive rod engages a piston in the syringe assembly and causes the displacement of the material therein.

Abstract: A rapid vascular drug delivery device, system and method is provided having a releasibly extending and retracting needle necessary for injecting and withdrawing fluid into and from a physiological or non-physiological cavity. Accordingly, the needle can be releasibly extended with sufficient momentum at a point of impact to penetrate a hard substance such as bone. The needle is slideably placed within an aperture configured at the forward end of a main housing, wherein a trigger needle can be arranged proximate to the forward end in order to detect tissue thickness or bone depth necessary for ensuring accurate placement of the bone-piercing needle within the bone marrow. The needle can receive fluids interspersed by parallel-placed or series-placed fluid containers configured within the main housing.

Abstract: A lancet assembly for pricking a person's skin for the purpose of causing a drop of blood to seep out, which can be collected and analyzed. The lance assembly comprises a housing and spring means carrying a lancet blade in the housing. The spring means has a non-linear characteristics, so that when the spring means is released from a compressed state a first spring constant is effective during an initial expansion of the spring means up to a predetermined limit of expansion, and a second spring constant smaller than the first spring constant is effective during a further expansion of the spring means beyond the predetermined limit of expansion.

Abstract: A reloadable automatic injector comprises a reusable power pack assembly for effectuating multiple injection operations. The power pack assembly includes an outer body and an energy releasing assembly disposed within the body. The energy releasing assembly is capable of providing multiple energy releasing strokes. A disposable cartridge assembly is provided which is engageable with the power pack assembly and forms an elongate injection assembly therewith. The cartridge assembly is adapted to receive energy from the power pack during one of the energy releasing strokes. The cartridge assembly includes a housing in which a charge of medicament and a needle is contained. A plunger is disposed within the housing for forcing the medicament through the needle.

Abstract: A disposable, automatic, injector is disclosed which allows self-administration of a medicament to be injected subcutaneously. The injector comprises a barrel (1) with an inner chamber bounded by a liner (2). A first piston (4) and a second piston (11) are provided which may slide within the chamber with a fluid-tight seal with the liner (2). The second piston (11) carries an injection needle (13). A drive means, comprising a compression spring (5) and a releasable retaining collet (6), is provided to act on the first piston (4) to drive it towards the second piston (11). In operation, the drive means urges the first piston towards the second (11). The injection fluid, initially stored between the first and second pistons is incompressible and causes the second piston (11) to move until the needle (13) projects from the end of the barrel (1).

Abstract: A rectal administrator comprises a body having an administrative portion adapted to be inserted into a subject's rectum. A charge of medicament is disposed within the body, and the administrative portion has at least one passage through which the medicament can exit the body. A plunger is disposed in the body and is movable from a first position to a second position within the body to dispense the medicament from the body through the at least one passage. A releasable energy source is mounted within the body so as to be released in response to a predetermined actuating procedure. The releasable energy source moves the plunger from the first position to the second position to dispense the medicament from the body through the at least one passage when released in response to the predetermined actuating procedure.

Abstract: A reloadable medicine injection apparatus having a barrel which receives a replaceable, disposable syringe subassembly. The syringe subassembly includes a cartridge having an ampule for housing fluid medication, a needle, and a plunger stopper. The subassembly also has a detachable plunger shaft coupled to the stopper. The reloadable injection apparatus includes a driver for forcing the syringe subassembly to inject the needle and displace fluid medication.

Abstract: An injection device has a needle (22) which, when the device is operated, is first caused to project, then liquid is forced out through it, and finally the needle is automatically retracted. The needle (22) extends forwardly from a capsule (18) that can slide longitudinally within a barrel-like body (1), a relatively weak spring (19) normally maintaining the capsule and needle retracted. A more powerful spring (14) acts oppositely on a plunger (26) which, when released, shoots the capsule forward by acting on the liquid therein, and then forces the liquid out through the projecting needle (22). At the end of the forward stroke the plunger (26) and capsule (18) are decoupled and the weak spring (14) returns the exhausted capsule and its needle to the retracted position.

Abstract: An automatic injector having a needle which is driven out of a body of the injector automatically by drive means also has an associated protective, or sharps, assembly. The sharps assembly has a cover member adapted to cover the needle after the injector has been used. The assembly is operative to provide relative movement between the injection needle and the cover member after injection so that the cover member covers the needle after use. The cover member is preferably actuated automatically so that the user never sees the needle.

Abstract: The structure of the Syringe Holder and Applicator provides an inner cylindrical tube adapted to have a hypodermic syringe inserted and held therein. This inner tubular syringe holder is slideably contained within an outer cylindrical tube. A cylindrical coil-spring retainer tube is also contained within the outer tube at the distal end of the outer tube's cylindrical cavity, leaving a considerable portion of the outer tube's cylindrical cavity free for occupation by the inner tubular syringe holder. The body of the outer tube is provided with a trigger mechanism which will automatically engage and lock the inner tubular syringe holder in a retracted position within the outer tube's cylindrical cavity when the inner tubular syringe holder is retracted toward the distal end of the outer tube's cylindrical cavity. The trigger mechanism is designed to, when pressed inward, release the inner tubular syringe holder for travel within the outer tube's cylindrical cavity.

Abstract: The present invention relates to an injection device for the automatic injection of at least one injection liquid, comprising an assembly of a discharge mechanism, a cartridge holder and a cartridge slidably accommodated in the cartridge holder, the discharge mechanism comprising an outer sleeve wherein the cartridge holder is slidably adapted. A protective cover is provided on the front of the device, covering the front portions of the cartridge holder and the outer sleeve in such a manner, that unintentional backward movement of the cartridge holder in the outer sleeve, resulting in activation of the device, is prevented.

Abstract: A single use automatic injection syringe having an improved locking mechanism for a coil spring that is used to provide motive force for dispensing a medicament contained therein is provided. The syringe is substantially fail-safe, inexpensive to construct and easy to operate.

Abstract: A syringe guide with adjustment of the depth to which the needle penetrates, the guide comprising a body (4) having one end provided with a sliding base (1) which is adjustable in position by means of a screw (3), and whose other end includes a sliding part (6) fixed to the syringe (2) and loaded by a spring (9) which, on relaxing, causes the needle (11) to be plunged into the skin to a predetermined depth.

Abstract: The application describes an administering device, in particular a self-injecting device, comprising a body for holding a container of a substance to be administered, a release mechanism, and means controlled by the release mechanism to discharge the said substance. The body is formed of two parts, one part being movable relative to the other, wherein one part has a trigger and the said release mechanism is partly actuated by the operation of a trigger of the said one part and partly actuated by movement of the other part relative to the said one part, but is only wholly actuated by both the operation of the trigger and the movement of the other part. Thus the discharge means cannot be accidentally actuated.

Abstract: To permit accuracy presetting of a dose for an injection to be ejected from an ampule (12) containing more fluid medication than the dose requires, a plunger (18) which is telescopically received within a tubular element (77) is movable against the customary piston (17) in the ampule for a distance which depends on the extent of telescopic insertion of the plunger stem (18") within the tubular element (77). This extent can be set by a rotary knob or sleeve (56, 65) which rotates the tubular element with respect to the plunger (18); the plunger and tubular element are coupled together by a steeply pitched spiral thread (76), thereby controlling the extent of projection of the combined injection dosing arrangement of plunger (18) and plunger length setting mechanism (77), and hence controlling the amount of medicinal fluid expelled through an injection needle (16) coupled to the ampule (12) at the end of the injection device.

Abstract: An autoinjector converted from an intramuscular to a subcutaneous mode of injection comprising a housing having a medicament cartridge assembly mounted within the housing means in a storage position for movement out of the storage position and a releasable stressed spring assembly for moving the medicament cartridge assembly means out of the storage position. The stressed spring assembly is operable in response to a manual actuating procedure which does not require compression of the subcutaneous tissue to effect an intramuscular mode of injection by moving the hypodermic needle of the cartridge assembly outwardly of the housing into the muscle tissue at the injection site of a user and a major portion of the liquid medicament of the cartridge assembly outwardly through the hypodermic needle into the muscle tissue of the user.

Abstract: An autoinjector particularly suited to be carried on the person of a user comprising a housing defining an exterior configuration of a size and shape approximately the same as that of a conventional fountain pen including a housing body assembly of elongated generally cylindrical configuration and a separate housing cap structure of elongated generally cylindrical configuration having an elongated clip thereon. The housing cap structure is detachably secured to the housing body assembly in open ended telescopic relation with an opposite end portion thereof preferably by a childproof connection. A medicament cartridge assembly is mounted in a storage position within a forward end of an interior chamber within the housing body assembly and a releasable stressed spring assembly is carried by the housing body assembly adjacent the rearward end thereof.

Abstract: A stressed spring assembly for providing an operative stroke in cooperating relation with a medicament cartridge assembly of an auto-injector so as to inject a liquid medicament of the medicament cartridge assembly through a hypodermic needle of the medicament cartridge assembly into an injection site of the user. The stressed spring assembly includes a cap structure serving the plural purposes of (1) facilitating the securement of the cap structure and remainder of the auto-injection with the user's pocket, (2) alleviating the likelihood of an unwanted release of the releasable mechanism of the stressed spring assembly with a resultant unwanted movement of the hypodermic needle and an unwanted movement of the liquid medicament outwardly of the hypodermic needle by requiring two different manual movements for its removal, and (3) protecting against an unwanted contact with the hypodermic needle while in extended operative position after withdrawal from the injection site.

Abstract: There is disclosed a precharged disposable syringe consisting of a housing having a central aperture through which extends an actuator button to contact an internal piston mounted over a medication ampoule contained in the housing. The ampoule includes a dependent hypodermic needle and the ampoule is slightively mounted in the housing for movement between a recessed position where it is totally contained and supported within the housing and an extended position with the dependent needle projecting out of the housing. An actuator spring is located in the housing and is compressed and biased to move the piston and the ampoule into the projected position. Medication is discharged by the mechanically coupled actuator button and piston. The actuator button and piston is locked for safety with a dent and plastic ring.

Abstract: An inexpensive injection device is provided which is manufactured of plastic components, and is adapted to fit various syringe sizes. The injection device is spring loaded, and provides a firing barrel which, in the cocked position, is offset slightly from the central bore of the device.When the device is fired, the firing barrel is aligned with the central bore and projects the needle portion of the syringe into the user.For obtaining blood samples, the syringe is replaced by a striker element, which actuates a spring loaded puncture module which punctures the skin and is quickly withdrawn.

Abstract: FIG. 2 shows a lancet device for performing a pricking operation. A barrel (36) is closed at one end by a finger guard plate (43) having a centrally positioned hole (42). Prior to use, the hole (42) is closed by a centrally disposed axially protruding spigot (54) found on the inside of a cap 40. In use, the cap is removed and the spigot (54) is inserted into the other end of the barrel (36) to bear against a shank 44 of a needle assembly 16 is secured to the periphery of a hole (46) in an end plate (48). A finger to be pricked is placed against the finger guard plate (43) and a thumb is placed over the cap (4) which is now located over the other end of the barrel from that shown in the drawing.Pressure between the thumb and finger causes the spigot (54) to break the attachment between the shank of the needle and the periphery of the hole (46) to allow the needle assembly to be projected through the barrel (36) under the force exerted by a compressed spring (16).

Abstract: A method of treating a patient with liquid medicament under circumstances where intravenous injection is not practical but the fast response time of an intravenous injection is desirable, including the treatment of individuals undergoing heart attack symptoms with t-PA.