DE202019102126U1 - Syringe suitable for repeated and / or continuous injection - Google Patents

Abstract

A self-refilling, reusable syringe (1) for sequentially and / or repeatedly administering a fluid, the syringe comprising an actuating assembly (25), a handle (6), a housing (12), a cylinder (10) and a piston (8) wherein the cylinder (10) and the piston (8) are held by the housing (12) and wherein the piston (8) is connected to the actuator assembly (25) to facilitate aspiration and administration of the fluid by actuation of the actuator assembly (25 ), the housing (12) further comprising:
a liquid inlet opening (21) through which a liquid can be sucked and passed into the cylinder (10),
a liquid outlet port (22) through which the liquid can be expelled from the cylinder (10) by the actuation of the actuator assembly (25),
Liquid transfer channels to direct the liquid into and out of the cylinder (10), the syringe (1) further comprising:
an inlet port (15) to attach an inlet valve assembly (13) to the fluid inlet port (21);
an outlet port (16) to secure an outlet valve assembly (14) to the outlet port (22), the outlet port (16) being adapted to connect a needle to the syringe, characterized in that
at least the cylinder (10), the piston (8) and the housing (12) are detachable parts of the syringe (1), that the handle (6) and the housing (12) consist essentially of plastic and that the syringe at 121 ° C or more autoclavable when fully assembled.

Description

Field of the invention

The present invention relates to veterinary instruments, especially syringes such as continuum syringes. The invention also relates to syringes intended for continuous, repeated use. The invention also relates to spraying for veterinary purposes and / or for animal health.

State of the art and problems solved by the invention

Veterinarians or farmers often need spraying to treat animals. If livestock is large in livestock and vaccination is required at different stages of animal growth, repeated injections of medication are required. In this case, breeders or veterinarians do not often have to change medicines or vaccines when using the syringe. Since the workload is high, frequent replenishment of drugs must be avoided and treatment by continuous dosing must be speeded up. So far available on the market continuum syringes are not designed and aligned for small volumes. They usually have the disadvantages that they are complicated in structure, have a high weight, if they are made of metal, that they are partially or not at all dismantled, are hardly autoclavable and have limited use when they are made of plastic. Their inferior design often leads to fatigue of the hands and, when used with small volumes, to difficulties in obtaining a sufficient initial charge for good performance. When disassembling for cleaning, individual small parts such as valve components are easily lost.

The present invention aims to remedy the deficiencies of the prior art and to provide a continuum syringe for animal health, veterinary use and agriculture with more rational design, better ergonomics, simpler structure and more convenient handling and maintenance.

Summary of the invention

In one aspect, the invention provides a syringe comprising an actuator assembly, a handle, a housing for holding a cylinder for aspirating and administering a fluid by actuating the actuator assembly, the housing further comprising: a fluid inlet port, a fluid outlet port, fluid transfer channels directing the fluid into and out of the cylinder, the syringe further comprising: an inlet port to secure an inlet valve assembly to the fluid inlet port, an outlet port to secure an outlet valve assembly to the outlet port, the outlet port configured to engage a needle the syringe can be attached.

In a further aspect, the invention provides a syringe comprising an actuator assembly, a handle, and a housing for holding a cylinder for aspirating and administering a fluid by actuation of the actuator assembly, the housing further comprising: a fluid inlet port through which a fluid passes can be drawn and directed into the cylinder, a liquid outlet opening through which the liquid can be ejected from the cylinder by the actuation of the actuator assembly, liquid transfer channels to direct the liquid into and out of the cylinder, the syringe further comprising: an inlet port to secure an inlet valve assembly to the liquid inlet port, attach an outlet port to attach an outlet valve assembly to the outlet port, wherein the outlet port is configured such that a needle can be attached to the syringe.

In one aspect, the invention provides a self-refillable, reusable syringe for sequentially and / or repeatedly administering a fluid, the syringe comprising an actuator assembly, a handle, a housing, a cylinder, and a piston, the cylinder and piston passing through the syringe Housing are held and wherein the piston is connected to the actuator assembly to allow the suction and administration of the liquid by actuation of the actuator assembly, wherein the housing further comprises: a liquid inlet opening through which a liquid can be sucked and passed into the cylinder, a Liquid outlet port through which the liquid can be ejected from the cylinder by the actuation of the actuator assembly, fluid transfer channels to conduct liquid into and out of the cylinder, the syringe further comprising: an inlet port around an inlet Valve assembly to attach to the liquid inlet port, an outlet port to attach an outlet valve assembly to the outlet opening, wherein the outlet port is designed so that a needle can be moved to the syringe, characterized in that at least the cylinder, the piston and the housing detachably assembled Parts of the syringe are that the handle and housing are essentially plastic, and that the syringe is autoclavable at 121 ° C or more when fully assembled.

In yet another aspect, the invention provides a self-refillable and / or continuous hypodermic syringe intended for use in the animal health environment, the syringe having an actuator assembly, a return spring, a handle, a three-way housing, independent valve assemblies, a cylinder, a syringe Piston, an inlet port, an outlet port and a needle, wherein the actuator assembly is connected to the piston by the handle and a push rod, wherein a return spring is plugged onto the rod of the actuator assembly, wherein the piston and the cylinder are housed in the housing and wherein a needle can be attached to a front end of the housing.

In some embodiments, the intake valve assembly and / or the exhaust valve assembly is a detachable, self-contained assembly or unit.

In some embodiments, the intake valve assembly and / or the exhaust valve assembly includes a plurality of assembled parts. Preferably, the parts are stably mounted, connected and / or held in the valve assembly. Accordingly, during disassembly of the syringe, individual components and / or parts of the valve arrangement are kept connected to each other, whereby the loss of the individual components and / or parts is avoided.

In some embodiments, the surface of the cylinder is provided with a precision scale that allows adjustment of a volume to be injected.

In some embodiments, the intermediate portion of the push rod and the return spring are encased in a volume adjustment sleeve, and the front portion of the volume adjustment sleeve is fixed in a fine adjustment opening provided in the handle. In some embodiments, a vernier lock nut is disposed on the vernier jack.

In some embodiments, the piston includes a rear end and the push rod has a forward end, the rear end of the piston being for connection to the forward end of the push rod. Preferably, the piston includes a recess at the rear end to receive a forward end of the push rod.

In some embodiments, the invention provides a syringe assembly comprising the syringe and a vial holder, wherein the syringe is configured such that the vial holder can be attached to the syringe. The syringe may be fed with liquid from a vial on the vial holder through an inlet line connected to the vial holder. Alternatively, the inlet line can be connected directly to an external container at the user's option.

Further aspects and preferred embodiments of the invention are given below and in the appended claims.

Further features and advantages of the invention will become apparent to those skilled in the art from the description of the following exemplary and / or preferred embodiments. These embodiments are exemplified, and the present invention should not be limited to the particular embodiments illustrated in the drawings and described below.

list of figures

• 1 is a side view of a syringe according to an embodiment of the invention.
• 2 is an exploded perspective view of the in 1 shown syringe.
• 3 is an exploded perspective view of a front end of a housing and in the 1 and 2 illustrated valve arrangements of the syringe.
• 4A and 4B are height views and longitudinal sections of the exhaust valve assembly (top) and the inlet valve assembly (bottom) of the in the 1 and 2 illustrated syringe.
• 5A and 5B are a side view and a rear perspective view of a handle of the in the 1 and 2 shown syringe and a vial holder, which is suitable for a detachable connection with the syringe.

Detailed Description of the Preferred Embodiments

The invention relates to syringes for injecting an injectable liquid such as a medicament, a vaccine, a solution of nutrients such as vitamins, etc. The syringe is preferably designed for veterinary use and / or for use in the field of animal health in general ,

The syringe is preferably designed for repeated injection of a certain volume of liquid. Accordingly, the syringe preferably includes a fluid inlet through which the fluid may be repeatedly drawn with a plunger into the barrel of the syringe and then expelled through an outlet and through a needle for injection into an animal. The inlet is preferably connected to a liquid container so that the same syringe can be repeatedly used with the same needle for repeatedly injecting a certain amount of the same liquid, for example for administering the liquid contained in the container successively to a plurality of animals.

With reference to the 1 and 2 includes the syringe 1 for veterinary use, an actuator assembly 25 that is an actuator, such as a push button 23 and an actuating rod or push rod 24 includes. The syringe further includes a return spring 3 , a handle 6 , a housing 12 , a piston 8th and an outlet port 16 that has a luer-lock nozzle 41 Includes a needle 19 at the outlet connection 16 to install.

The push rod 24 is in control 6 and in particular in an upper body or part 31 of the handle. When the syringe is assembled, the piston is 8th with the push rod 24 connected. The upper body 31 includes a tubular passage through which the push rod 24 runs when the syringe is assembled.

The return spring 3 is in the middle section of the push rod 24 assembled. The piston 8th and the cylinder 10 are located in the housing 12 ,

The surface of the cylinder 10 is provided with a scale or graduation that allows volume adjustment. For example, the position of an O-ring on the piston 8th together with the scale serve as a volume indicator. The cylinder 10 is preferably transparent, for example made of heat-resistant glass, and the O-ring may have an easily recognizable, bright or eye-catching color so that it passes through the cylinder 10 is visible.

The Luer-Lock nozzle 41 for needle 19 is with the front end of the case 12 In particular, the Luer-Lock nozzle is in an outlet port 16 contain.

As used herein, the term "front" or "front end" refers to an end, a side, a piece, or a movement that is in the direction of the needle when assembling the syringe 19 while the term "back" is used for ends, sides, orientations, etc. that are on the push button 23 the syringe are directed. In addition, the distinction "upstream" and "downstream" can be made with respect to the direction of the liquid flow, where "downstream" refers to a position corresponding to the discharge of the liquid at the needle 19 is comparatively closer, and "upstream" to a position closer to the container of the liquid to be injected.

The middle and rear section of the push rod 24 and the return spring 3 are from a volume adjustment jack 4 shrouded. The front part of the volume adjustment bush 4 is in a rear opening or hole of the handle 6 attached. In the illustrated embodiment, the body part comprises 31 of the handle 6 a through hole or channel having a first or rear opening, with an internal thread in the rear opening 29 is provided ( 5B) , The volume adjustment socket 4 preferably comprises an external thread for screwing into the internal thread 29 at the back opening of the body part 31 ,

In one embodiment, the syringe is an adjustable volume syringe that is a volume adjustment assembly 4 . 5 includes to adjust the volume of fluid within a volume range. A particular volume to be injected may be within the adjustable volume range by screwing in or unscrewing the volume adjustment sleeve 4 into the rear opening or hole of the handle 6 be set.

The volume adjustment socket 4 includes a volume adjusting nut 5 , The volume adjusting nut is preferably on the external thread of the Volumeneinstellbuchse 4 screwed. When the volume adjusting nut is bolted to the rear end of the body part 31 (at the rear opening) comes into contact with the location of the entire Volumeneinstellbuchse 4 blocked and the volume is set. To change the set volume, the user can adjust the volume adjustment nut 5 solve what makes it possible, the volume adjustment 4 in relation to the upper part 31 screw in and unscrew again to adjust the volume to be injected.

A support ring (or stroke stop) 2 is in a certain longitudinal position on the push rod 25 engaged ( 2 ). In addition, the front end includes the Volumeneinstellbuchse 4 a narrowing cornice 27 , The spring 3 is in the volume adjustment socket 4 housed to the actuator assembly 25 and thus also to push the piston to a rear position or rest position when no pressure by a user on the push button 23 is exercised. The one at the narrowing cornice 27 fitting support ring 2 limits the reverse rotation of the push rod 25 and thus defines the rest position. The forward stroke of the actuator assembly 25 when ejecting the liquid is caused by a stroke stop inside the case 12 limited. Therefore, the front stop position of the piston stroke is fixed, while the rear stop position by Screw the volume adjustment bush 4 is adjustable, which allows a volume adjustment.

The piston 8th is in the cylinder 10 provided, whereby a piston-cylinder arrangement is created, which is suitable for sucking and discharging liquid. Accordingly, a seal in the form of an O-ring 11 provided in a circular groove on the piston 8th is attached to when pressing or releasing the actuator assembly 25 by a user to provide the required output and suction.

The push rod 24 is on the piston 8th via a recess in the rear end of the piston 8th attached. The forward end of the push rod includes a geometric shape, such as a bulge / recess, corresponding to the recess in the rear end of the piston to permit longitudinal connection along the piston axis. The housing 12 gets on the handle 6 with a main nut or housing nut 7 attached.

In one embodiment, the syringe comprises a housing nut 7 for securing the housing 12 on the handle 6 so that the loosening of the housing nut 7 it allows the housing 12 and optionally also the cylinder 10 from the handle 6 to remove and / or to solve. Preferably, the removal of the housing nut allows 7 also the piston 8th from the actuator assembly 25 to separate.

In one embodiment, the syringe further comprises a volume adjustment sleeve 4 that detachable with the handle 6 is connected, wherein the actuating arrangement 25 through the volume adjustment socket 4 removable with the handle 6 connected is.

In one embodiment, the handle comprises 6 a body part 31 comprising: a connector 32 around the case 12 with the help of a housing nut 7 on the handle 6 to attach, with the case 12 designed so that it is connected to the connector 32 can be connected at one or more predetermined angular positions.

In one embodiment, the housing 12 and the connection socket 32 of the body part 31 geometrically and / or structurally configured so that they can be connected and / or mounted to one another in an angular position that can be selected from a multiplicity of predetermined angular positions.

In one embodiment, the housing comprises 12 a crenellated sleeve 34 and the connection socket 32 includes one or more humps 36 which fit into gaps in the crenellated sleeve, the layers of said one or more cusps 36 the angular position of the housing 12 in relation to the connection socket 32 determine. How out 2 can be seen, includes the connector socket 32 a sleeve with an external thread on the internal thread of the housing nut 7 is tuned and thus screwing the housing nut 7 on the threaded sleeve of the connection socket 32 allows. The projections 36 are provided in an inner surface of the sleeve. On the other hand, the crenellated sleeve 34 of the housing 12 taken as a pin part within the sleeve of the socket as a female part. The battlements and projections of the crenellated pod 34 or the sleeve 21 are arranged so that an arbitrary arrangement of the angular position of the housing 12 opposite the sleeve 6 and in particular to the upper part 31 the same is prevented.

Therefore, a user can adjust the angular position of the housing 12 in terms of the handle 6 through appropriate slots and projections on both sides change.

The fixation of the angular position also causes a rotation of the housing 12 in terms of the handle is blocked as soon as the case 12 into the connection socket 32 is introduced even before the housing nut 7 is attracted.

A container (not shown) comprising a liquid to be injected may be connected via a flexible hose or conduit 17 at the front section of the housing 12 with the inlet connection 15 be branched.

Regarding 3 becomes a check valve 14 with mechanical coding in suitable joints in the front end or in the outlet opening 22 of the housing 12 used. An outlet port 16 that has a luer-lock nozzle 41 (for the needle connection) is with the front end of the outlet opening 22 connected to the exhaust valve assembly 14 in a valve assembly housing to hold and hold that through the outlet port 16 and the outlet opening 22 is provided when the two are preferably connected by screwing. In the illustrated embodiment, the outlet port 16 a nut-like construction on and includes an internal thread, the at the outlet opening 22 provided external thread corresponds.

In the front part of the case 12 There are suitable fluid transfer channels that allow the transport and distribution of the liquid when using the syringe.

One or both of the valve assemblies is preferably a one-way valve. As in 4B shown, include the inlet valve assembly 13 and the exhaust valve assembly 14 one through hole or one channel each 13d or. 14d ,

In one embodiment, the intake valve assembly comprises 13 a valve housing 13a with a passageway 13d , an elastic element 13c and a poppet or valve ball 13b in the passageway 13d are accommodated, wherein the elastic element 13c in the case 13a is provided to the valve cone or the valve ball 13b to act and the passageway 13d close.

In one embodiment, the exhaust valve assembly includes 14 a valve housing 14a with a passageway 14d , an elastic element 14c and a poppet or valve ball 14b in the passageway 14d is accommodated, wherein the elastic element 14c in the case 14a is attached to the valve cone or the valve ball 14b acts and the passageway 14d closes.

As well as out 4B can be seen, includes each self-contained cartridge valve 13 and 14 a valve body 13a . 14a , a stopper 13a . 14a , preferably made of an elastomeric material, and a metal spring 13c . 14c ,

In the illustrated embodiment, the elastic elements / metal springs act 13c . 14c astringent. At one end is every spring 13c . 14c with the respective cone 13b . 14b and at the other end of the spring with the valve body or the housing 13a . 14a connected.

In this way, the springs act on the cones, here by train, in the appropriate direction, which leads to the closure of the respective valve, whereby the one-way valves are provided.

When the intake valve assembly 13 in the through the inlet opening 21 and the inlet port 15 mounted housing, connects the through hole 13d the intake valve assembly 13d a lower channel (not shown) of the housing 12 with a supply port or feeder 26 of the inlet connection 15 , Both ends of the inlet valve assembly 13 are firmly between the inner housing contact surfaces of the connector 15 and the inlet opening 21 of the housing 12 pressed.

When the exhaust valve assembly 14 in the through the outlet opening 22 and the outlet port 16 mounted housing, connects the through hole 14d the exhaust valve assembly 13d a front channel (not shown) of the housing 12 with the Luer-Lock nozzle of the outlet connection 16 ,

Both ends or extremities of the exhaust valve assembly 14 are firmly between the inner housing contact surfaces of the outlet connector 16 and the outlet opening 22 of the housing 12 pressed.

Housing for the valve assemblies 13 . 14 be through the inlet port 15 and the inlet opening 21 and the outlet port 16 or the outlet opening 22 provided. The geometry of the valve assembly housing is designed so that the dead volume minimizes optimal dosing and optimal initial filling can be achieved.

The geometry of the valve assembly housing is preferably designed to determine the orientation and positioning of the valve assemblies. For this purpose, the valve assemblies and the respective housings are preferably mechanically and / or structurally coded and / or adapted, comparable to the parts of a puzzle and / or a plug and the matching socket. Preferably, each valve assembly has a downstream and an upstream side, and the mechanical coding determines the correct insertion relative to the corresponding side, as well as the insertion of a particular valve assembly into the predetermined one of the two housings, e.g. B. the intake valve assembly in the specially provided for the intake valve assembly housing.

In one embodiment, the exhaust valve assembly includes 14 a valve housing or a valve body 14a that has one or more geometric structures 14e includes, and wherein the inlet opening 21 , the outlet opening 22 , the inlet port 15 and the outlet port 16 a geometric and / or structural configuration and / or coding, which is provided so that the exhaust valve assembly 14 only at the outlet opening 22 and preferably can only be mounted in the correct orientation.

In one embodiment, the exhaust valve assembly includes 14 and preferably a body 14a the exhaust valve assembly 14 one or more projections 14e with a first geometric shape, and wherein the outlet opening 22 one or more recesses 22e which coincide with the first geometric shape, thereby selectively correcting the correct and / or predetermined positioning of the exhaust valve assembly 14 in relation to the outlet opening.

In one embodiment, the intake valve assembly comprises 13 a valve housing or a valve body 13a that has one or more geometric structures 13e includes, and wherein the inlet opening 21 , the outlet opening 22 , the inlet port 15 and the outlet port 16 a geometric and / or structural configuration provided so that the inlet valve assembly 13 only at the inlet opening 21 , not at the outlet opening 22 and preferably can only be mounted in the correct orientation.

In one embodiment, the intake valve assembly comprises 13 and preferably a body 13a the exhaust valve assembly 13 one or more projections 13e with a second geometric shape, and wherein the inlet opening 21 includes one or more recesses that match the second geometric shape, thereby selectively correcting the correct and / or predetermined positioning of the intake valve assembly 13 with respect to the inlet opening.

In one embodiment, the outlet port 22 and the outlet port 16 a housing specifically for the exhaust valve assembly 14 ready, wherein the housing has a geometric shape, such as the outer diameter, mechanical coding, etc., the shape of the Auslaßventilanordnung 14 corresponds, preferably in such a way that the exhaust valve assembly 14 is designed so that it can be mounted in a predetermined orientation only in the Auslaßventilgehäuse and preferably not in the housing provided for the inlet valve assembly.

In one embodiment, the inlet port 21 and the inlet port 15 a housing specifically for the intake valve assembly 13 ready, wherein the housing has a geometric shape, such as the outer diameter, a mechanical coding, etc., which corresponds to the shape of the inlet valve assembly 13 corresponds, preferably in such a way that the inlet valve assembly 13 is designed such that it can be mounted in a predetermined orientation only in the inlet valve housing and preferably not in the housing provided for the outlet valve arrangement.

It is noted that in the present description, exemplary intake and exhaust valve assemblies are illustrated that include a valve housing or body, a valve spring, and a poppet. Other types of valves may be used and adapted in accordance with the invention to achieve the characteristics and advantages described herein. For example, valve assemblies with a valve ball can be used. Additionally or alternatively, valve assemblies may be used in which the valve channel is closed by a compressive force (rather than pulling force) provided by an elastic member such as a spring. Another variation embodying the invention is the use of elastic members other than springs. Finally, the invention includes the use of other valve types, e.g. B. valves without elastic element and possibly without cone. Preferably, the valve assemblies are self-contained and arranged in a mounted member so that individual parts or components of the valve assemblies are not easily lost, but remain together. This facilitates maintenance and reduces the loss of components during disassembly of the syringe, eg. B. during maintenance.

Since the direction of fluid transfer through the valve assemblies is to be controlled, the valve assemblies are preferably characterized in some manner or geometrically configured to prevent, prevent, or eliminate misplacement of the valve assemblies in their respective housing. Instead of or in addition to the geometrically coincident shapes provided to allow for proper placement and to prevent or hinder misplacement of the valve assemblies in the valve housings, as well as to avoid confusion between the valves, other means such as color coding, lettering be used on the arrangements, etc.

In preferred embodiments, the inlet and outlet valve arrangements have (at least slightly) different opening characteristics, and / or valve arrangements with different elastic elements. Therefore, it is desirable that the intake and exhaust valve assemblies are not inserted into the housing provided for the other valve.

In one embodiment, the outlet port comprises 16 a front end with a Luer-Lock nozzle 41 that makes it possible for a needle 19 at the outlet connection 16 to install. Preferably, the Luer-Lock nozzle 41 and preferably the entire outlet port 16 made of metal.

The 5A and 5B show the handle 6 and a vial holder 46 that is designed to be on the handle with the syringe 1 can be connected. A vial (not shown), such as a bottle with a (liquid) drug, may be placed on the vial holder 46 be attached. For this purpose, the vial holder includes 46 an external thread 49 to attach a vial or holder, for example, includes an internal thread by screwing. Such vial protection devices may, for example, be realized in the form of a band, a plastic bottle, a sleeve or a cylinder. The external thread 49 can also be used to screw a Holding assembly for holding and securing a vial on the vial holder 46 be provided.

In one embodiment, the handle comprises 6 an upper part or body part 31 , which is a vial holder connection structure 44 includes to a vial holder 46 removable and / or removable on the connection structure 44 with the syringe 1 connect to.

In one embodiment, the syringe is 1 with a separate vial holder 46 provided so as to be detachable with the syringe on the connection structure 44 can be connected. Preferably, the connection structure 44 at the upper part or body part 31 the handle provided, wherein it preferably protrudes from an upper side of the handle.

In an embodiment, the connection structure comprises 44 of the vial holder a groove 45 and the vial holder 46 includes a rail 47 for insertion in the groove 45 ,

In one embodiment, the vial holder includes 46 an extension or a pen 48 wherein the pin is configured to detach from a housing nut 7 to be detained when the vial holder 46 with the vial holder connection structure 44 is connected, wherein the mother also serves to the housing 12 with the handle 6 connect to.

In one embodiment, the upper or body part comprises 31 a connection socket 32 around the case 12 on the handle 6 to attach, with the connection socket 32 a recess 42 for receiving the pen 48 includes, wherein the housing nut 7 is designed so that it is at least partially over the pen 48 extends when the housing nut 7 at the connection socket 32 is attached, and the pin 48 and with it the vial holder 46 at the vial holder connection structure 44 of the body part 31 restrains. The recess 42 is preferably under control 6 provided and preferably extends to the connection socket 32 ,

The handle 6 and especially the upper body 31 include a neck 44 with a groove or groove-shaped recess 45 ( 2 ). The vial holder 46 includes a rail 47 which is inserted through the groove by means of a translationally guided movement.

The vial holder 46 is in the recess 45 about the mother 7 blocked in a suitable position. A first opening of a delivery tube or tube 17 For example, made of rubber, can with a hose outlet attachment 43 of the vial holder 46 be connected, and the second opening of the hose 17 can with the hose inlet attachment 26 of the inlet connection 15 get connected.

Alternatively, if the vial holder 46 not used, a circuit board or a Saugplatinenkugel 18 with the first end of the hose 17 be connected, and the hose 17 Thus, it can be used in a container, such as a bottle, containing the liquid to be injected.

In one embodiment of the invention, one or more are selected from the group consisting of: the handle 6 , the housing 12 , an actuator 23 the actuator assembly 25 and the inlet port 15 made of plastic. Preferably, one or more are selected from the parent nut 7 , the volume adjustment jack 4 , the volume adjusting nut 5 and the actuator 23 , also made of plastic. Preferably, some parts are made of metal. In one embodiment, one or more selected from the group consisting of: the push rod 24 , the support ring 2 , the piston 8th and the outlet port 16 , made of metal, preferably of stainless steel or plated brass. In general, although certain parts are made of metal components, the syringe as a whole is considered to be a syringe made essentially of plastic.

In one embodiment of the invention, the syringe has a nominal volume (maximum) of 0.5 ml or less. Typical nominal volumes of exemplary syringes are, for example, 0.1 ml, 0.2 ml, 0.3 ml, 0.4 ml and 0.5 ml. The syringes preferably have an adjustment range within the volume to be injected which can be adjusted by the user , For example, for a syringe with a nominal volume of 0.2 ml, the adjustment range can be from 0.0 to 0.2 ml. In other embodiments, the syringe may have a minimum volume indicated or derivable from the volume scale, such as 0.01 or 0.02 ml, such that the adjustment range starts from a value greater than 0 to the nominal volume, such as a range of zero , 02 to 0.5 ml.

In one embodiment of the invention, the syringe is adapted to be continuously refilled and / or to continuously and / or sequentially and / or repeatedly inject a set amount of liquid. Accordingly, the syringe is a "self-refilling syringe" wherein releasing the push-button during use of the syringe 23 by a user after an injection to aspirate liquid from a liquid container, for example from a vial, into the cylinder 10 leads. Subsequent operation of the push button 23 causes the fluid to flow through the needle 19 is injected and then again liquid is sucked into the cylinder. Such self-refilling syringes, where a liquid is administered during sequential and / or repeated administrations, are known, for example, from veterinary and / or animal health.

Preferably, the syringe is 1 no disposable and / or disposable syringe. Preferably, the syringe is reusable.

In one embodiment of the invention, the syringe comprises a plurality of detachably mounted parts. Preferably, the housing 12 , the housing nut 7 and the handle 6 removable parts of the syringe.

In one embodiment, the syringe comprises a volumetric subassembly 8th . 10 . 12 that is a cylinder 10 , a piston 8th and the case 12 comprising, wherein the volumetric subassembly 8th . 10 . 12 a detachably mounted in the syringe and / or a likewise removably mounted subassembly of the syringe is.

Preferably, the cylinder 10 and the piston 8th also removable parts of the syringe.

Preferably, the actuating arrangement 25 also a detachably mounted part of the syringe 1 , In one embodiment, the volume adjustment sleeve 4 , the actuator assembly 25 and the spring 3 removable to an actuation and volume adjustment arrangement 3 . 4 . 25 the syringe mounted. Preferably, the actuation and volume adjustment assembly 3 . 4 . 25 a detachably mounted subassembly of the syringe. The subassembly 3 . 4 . 25 preferably also includes the support ring 2 and can be done by removing the carrying ring 2 from the push rod 24 be taken apart.

In one embodiment, the syringe is designed so that it can be completely disassembled and reassembled and / or suitable for multiple use.

In particular, a user can view the syringe as shown in 2 represented, for example, in all parts to clean components, especially those that come into contact with the liquid to be administered.

Preferably, the adjusting bushing form 4 , the spring 3 and the actuator assembly 25 an arrangement that is not dismantled or disassembled during general disassembly and maintenance.

Preferably, the disassembly of the syringe, z. Example, by removing components, done by a user by hand, preferably without the use of a tool. In particular, the housing nut 7 unscrewed by a user, eliminating the housing 12 , the cylinder 10 and the piston 8th from the handle 6 and the actuator assembly 25 can be removed. Likewise, the Volumeneinstellbuchse 4 and / or the inlet and outlet ports 15 and 16 preferably manually by a user, preferably by unscrewing. Removing the inlet and outlet connections 15 and 16 allows the removal of the valve assemblies 13 and 14 , Removing the volume adjustment sleeve 4 after opening the housing screw 7 allows removal of the actuator assembly 25 from the handle 6 ,

Preferably, the valve assemblies 13 and 14 not intended by the user in their components 13a - 13c and 14a - 14b to be dismantled. Preferably, the valve assemblies are intended to be used as a unit and, if necessary, replaced, which behaves as a single piece. During the decomposition into the components 13a - 13c and 14a - 14c technically not necessarily impossible, the valve assemblies are not specifically designed for such a decomposition. Accordingly, the valve characteristics may be adversely affected by such disassembly and reassembly of the valve components, or the components may be damaged.

In one embodiment of the invention, the syringe is 1 autoclavable at 121 ° C or more when fully assembled. The materials from which the syringe is made are selected to allow autoclaving. In one embodiment, the fully assembled syringe is autoclavable at 125 ° C.

• - Selbstnachfüllende Spritzen mit federbelastetem Kolben und Dreiwegeventilsystem,
• - Mindestens 4 Modelle verfügbar, z. B. 0,1 ml, 0,2 ml, 0,3 ml und 0,5 ml,
• - ermöglicht die problemlose Injektion sehr kleiner Mengen bis zu 0,02 ml bei gleichzeitig verbesserter Handhabung und reduziertem Gewicht,
• - das Volumen kann einfach mit einer mikrometrischen Schraube und Kontermutter eingestellt werden,
• - starker oder stabiler Zylinder mit feiner Volumenskala,
• - komplett montiert bei 121 °C (20 Minuten) autoklavierbar, gute chemische Beständigkeit gegen verschiedene im Veterinärbereich verwendete Impfstoffe auf Wasser- und Ölbasis,
• - zuverlässige Spritze für eine einfache Reinigung und Wartung, umfassend austauschbare, erhältliche Ersatzteile der Spritze, einschließlich des graduierten Glaszylinders.

Compared to the existing continuum syringes, the syringe of the present invention has the following advantages and properties:

• Self-priming syringes with spring-loaded piston and three-way valve system,
• - At least 4 Models available, eg 0.1 ml, 0.2 ml, 0.3 ml and 0.5 ml,
• - allows easy injection of very small amounts up to 0.02 ml with improved handling and reduced weight,
• - the volume can be easily adjusted with a micrometric screw and lock nut,
• - strong or stable cylinder with fine volume scale,
• - fully autoclavable at 121 ° C (20 minutes), good chemical resistance to various water and oil based vaccines used in the veterinary field,
• - Reliable syringe for easy cleaning and maintenance, including replaceable, available syringe parts, including the graduated glass cylinder.

Although some of the preferred embodiments of the present invention have been described and specifically illustrated above, it is not intended that the invention be limited to these embodiments. Various changes may be made thereto without departing from the scope and spirit of the present invention as set forth in the following claims.

LIST OF REFERENCE NUMBERS

1.

syringe

Second

Pressure ring as stroke stop

Third

Retaining spring

4th

Volume adjustment sleeve

5th

Volume adjustment nut

6th

Handle comprising upper body with socket for housing

7th

housing nut

8th.

Piston with groove for O-ring (0.1 ml, 0.2 ml, 0.3 ml) or precision grinding piston without groove (0.5 ml)

9th

O-ring

10th

Cylinder with volume scale

11th

Zylinderunterlegscheibe

12th

Housing with intake and exhaust valve assembly, inlet and outlet ports, front piston stroke stop, cylinder windows and slots for angular positioning on the handle

13th

Inlet valve assembly (or inlet valve cartridge) with valve body, spring and elastomeric cone, through-hole 13a . 13b . 13c . 13d

14th

Outlet valve assembly (or exhaust valve cartridge) with valve body, spring and elastomeric cone, through-hole and matching structure 14a . 14b . 14c . 14d , 14e

15th

inlet port

16th

Outlet connection with Luer-Lock nozzle

17th

feeding tube

18th

circuit board

19th

needle

20th

Needle board for refilling the hose feed

21st

Inlet opening of the housing

22nd

Outlet opening of the housing

22e

matching recess

23rd

Actuator / push button

24th

pushrod

25th

actuator assembly

26th

Sleeve for hose assembly to the inlet connector

27th

narrowing Sims

29th

Internal thread for the volume adjustment socket

31st

Upper part or body part of the handle

32nd

Connection socket or receiver

34th

Pinned sleeve

36th

cusp

41st

Luer lock nozzle

42nd

Recess in the handle 2

43rd

Schlauchauslassanbringung

44th

Phiolenverbindungsstruktur

45th

groove

46th

vial holder

47th

rail

48th

Extension or pen

49th

External thread for attaching a vial guard or holder.

Claims (19)

A self-refilling, reusable syringe (1) for sequentially and / or repeatedly administering a fluid, the syringe comprising an actuating assembly (25), a handle (6), a housing (12), a cylinder (10) and a piston (8) wherein the cylinder (10) and the piston (8) are held by the housing (12) and wherein the piston (8) is connected to the actuator assembly (25) to facilitate aspiration and administration of the fluid by actuation of the actuator assembly (25 ), wherein the housing (12) further comprises: a liquid inlet port (21) through which a liquid can be sucked and directed into the cylinder (10), a liquid outlet port (22) through which the liquid can be expelled from the cylinder (10) by the actuation of the actuator assembly (25) to direct liquid transfer channels to direct the liquid into and out of the cylinder (10), the syringe (1) further comprising: an inlet port (15) for securing an inlet valve assembly (13) to the fluid inlet port (21), attaching an outlet port (16) about an outlet valve assembly (14) to the outlet port (22), the outlet port (16) is configured such that a needle can be connected to the syringe, characterized in that at least the cylinder (10), the piston (8) and the housing (12) are removable parts of the syringe (1) that the handle (6) and the housing (12) are substantially made of plastic and that the syringe is autoclavable at 121 ° C or more when fully assembled. Syringe (1) to Claim 1 comprising a housing nut (7) for securing the housing (12) to the handle (6) such that unscrewing the housing nut (7) allows the housing (12) and cylinder (10) to be removed from the handle (6) and separating the piston (8) from the actuator assembly (25). Syringe (1) to Claim 2 further comprising a volume adjustment sleeve (4) detachably connected to the handle (6), the actuator assembly (25) being detachably connected to the handle (6) by means of the volume adjustment sleeve (4). Syringe (1) to Claim 1 wherein the inlet valve assembly (13) and / or the outlet valve assembly (14) is provided as a detachable, self-contained unit or element. A syringe (1) according to any one of the preceding claims, wherein the inlet valve assembly (13) and / or the outlet valve assembly (14) comprises a plurality of assembled parts (13a-13d; 14a-14c). A syringe (1) according to any one of the preceding claims, wherein the inlet valve assembly (13) comprises a valve housing (13a) comprising a passageway (13d), a resilient member (13c) and a poppet or valve ball (13b) disposed in the Through passage (13d) are housed, wherein the elastic member (13c) in the housing (13a) is provided to act on the valve cone or the valve ball (13b) and to close the passageway (13d). A syringe (1) according to any one of the preceding claims, wherein the outlet valve assembly (14) comprises a valve housing (14a) comprising a passageway (14d), a resilient member (14c) and a poppet or valve ball (14b) disposed in the Throughway (14d) are housed, wherein the elastic member (14c) in the housing (14a) is provided to act on the valve cone or the valve ball (14b) and to close the passageway (14d). A syringe (1) according to any one of the preceding claims, wherein the outlet valve assembly (14) comprises a valve body or valve body (14a) having one or more geometric structures (13e), and wherein the inlet port (21), the outlet port (22) Inlet port (15) and outlet port (16) comprise a geometric and / or structural configuration or coding provided such that the exhaust valve assembly (14) is at the outlet port (22), and preferably only in the correct orientation, but not at the Inlet opening (21) can be mounted. A syringe (1) according to any one of the preceding claims having an adjustable volume and wherein a nominal volume of the syringe is 0.5 ml or less. A syringe (1) according to any one of the preceding claims, wherein the handle (6) comprises and / or is associated with a body part (31) comprising: a receptacle (32) for securing the housing (12) to the handle (6) by means of a housing nut (7), the housing (12) being adapted to engage the receptacle (32) at one or more predetermined angular positions can be attached. Syringe after Claim 10 wherein the housing (12) and the receptacle (32) of the body part (32) are geometrically and / or structurally configured to interconnect and / or mount in an angular position that can be selected from a plurality of predetermined angular positions can be. Syringe after Claim 10 or 11 wherein the housing (12) comprises a crenellated sleeve (34), and wherein the receptacle (32) includes one or more bosses (36) that fit into gaps of the crenellated sleeve, the positions of the one or more bosses (36) determine the angular position of the housing (12) with respect to the connector (32). A syringe (1) as claimed in any one of the preceding claims, wherein the outlet port (16) includes a forward end having a luer lock nozzle (41) configured to communicate with a needle (19) with the outlet port (16) enable. A syringe (1) according to any one of the preceding claims, wherein the handle (6) comprises an upper part or body part (31) comprising a vial holder connection structure (44) for detachably attaching a vial holder (46) to the syringe (1) on the connection structure (44). Syringe (1) to Claim 14 provided with a separate vial holder (46) configured to be removably attached to the vial holder connection structure (44) with the syringe. Syringe (1) to Claim 14 or Claim 15 wherein the connection structure (44) includes a groove (45), and wherein the vial holder (46) includes a rail (47) to be received in the groove (45). Syringe (1) according to one of Claims 14 to 16 wherein the vial holder (46) comprises an extension or pin (48), the pin being configured to be held by a housing nut (7) when the vial holder (46) is connected to the vial holder connection structure (44), said nut being further configured to connect the housing (12) to the handle (6). Syringe (1) to Claim 17 in that the upper part or body part (31) comprises a connection socket (32) for fixing the housing (12) to the handle (6), the connection socket (32) comprising a recess (42) for receiving said pin; Housing nut (7) is designed so that it extends at least partially over the pin (48) when the housing nut (7) is attached to the connector (32) to the pin (48) and thus the vial holder (46) the vial holder connection structure (44) of the body part (31). A syringe (1) according to any one of the preceding claims, which is designed so that it can be completely disassembled and reassembled.

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