CN1178475A - Device for dispensing discrete doses of a liquid - Google Patents

Abstract

The invention concerns a device (V) for dispensing discrete doses (2') from a reservoir (3), preferably in the form of a replaceable cartridge (K), through a dispensing nozzle (4), preferably in the form of a hypodermic needle (5). The device is designed to enable exactly reproducible doses to be dispensed from the reservoir and administered reliably. This is achieved by use of an intermediate reservoir (17) into which the dose (2') passes after being dispensed from the main reservoir (3), the intermediate reservoir (17) working in conjuction with a discharge plunger (19) which has a channel (18) passing through it to allow the intermediate reservoir (17) to be filled.

Description

Apparatus by the amount output liquid that distributes

The present invention relates to a kind of apparatus, be used for being preferably designed as from one of a storage compartment that is preferably the cartridge shape output jet pipe output liquid of plug-in type entry needle by the amount of distributing.

This type of syringe is known, and for example its form is shaft-like apparatus (US-PS2591457), or the inoculation of form wheel (US-PS 2472116).These apparatuses have an elasticity hammer that stroke is adjustable.This elasticity is hammered into shape in the rear end of loading chamber, the syringe by traditional design of can packing in loading chamber.According to the lockable stroke of adjusting of elasticity hammer, the piston of syringe is towards the direction reach of output jet pipe.By this discharge progressively, cause whole emptyings at last.This syringe is thrown away usually then.

The purpose of this invention is to provide a kind of apparatus by this type, this apparatus can distribute the amount with repeatability in easy mode from the storage compartment, and can use on most convenient ground.

Reach this purpose by illustrated in the claims the present invention.

According to such design, improved the serviceability of this type of apparatus.Main for this reason by a buffer of accepting the amount of distribution from the storage compartment, for it sets an output piston and a passage that is used for the filling buffer is arranged.The amount of discharging is drawn onto its front side from the rear side of output piston, and separates clearly with remaining storing.Compare with traditional syringe, apparatus of the present invention no longer need be worked arduously in whole filled liquid level length.Therefore there is identical mechanical condition all the time.They can adapt to the parameter of entry needle/liquid best.Also having an advantage is that storing can be standby in comparatively cheap packing; Say that in some sense the syringe that also has packaging function obviously is to have wasted very much as disposable utensil.Proved already advantageously in addition that output piston connected the container of same interior dress storage compartment together for the filling buffer can move, and the cylinder of the formation buffer of output piston can move along opposite direction together with this container.This provides the filling stroke of a monodrome on the one hand, on the other hand along injection stroke is provided in the other direction.To reflux in order when producing output pressure, stoping,, to have constituted one at these one side effective measures by the check valve between storage compartment and buffer.Proved already advantageously in addition, carried out along reciprocal moving by last continuous stages of time.Therefore can on injection stroke, add a stroke of sending to that entry needle or syringe needle is placed extended position.Syringe needle stretches out from lid.What conform with purpose is that injection stroke just takes place at the eleventh hour, so these stages are synchronous before this.Release is very unexpected, in both cases all to discharge the spring of appropriate loading.What especially structurally bring advantage is that cylinder extends for the sleeve pipe round container.Two parts guidings and give stability each other mutually is so can be processed into real thin-walled.This helps weight reduction and allows for a kind of suitable compact structure shape.In fact can be designed to the size of a cigarette case by apparatus of the present invention.In order more reasonably to dispose the member of apparatus, the present invention advises that two springs are contained in sleeve pipe/container upper end, that is sleeve pipe/container back to output jet pipe that end, and the supporting in the enclosure.Spring is certainly with respect to the container coaxial positioning, helps this container to move with making every effort to the no inclination that reaches in sleeve pipe or guides.In order to form storing and to replenish easily and feed in raw material, the suggestion shell has a concentric charge door in the storage compartment with container.Relevant therewith further improved being characterised in that, charge door can be used plug closes.Can reach sterile working, nothing to find fault with, be without rebuke ground like this.If stopper has a length of docking with cartridge case by force rightly, then stopper can also be born it and play sealing process function in addition, that is, this apparatus can only just can be feeded when stopper is arranged.Cartridge case can be easy to pack into.When implementing the charging stroke, towards the mobile connection of channel direction.The advantage of doing like this is only just to dock when apparatus has certain condition.What conform with purpose is that this cartridge design is a glass ampule.In addition, the feature of this apparatus also is a common release-push, is used for the effect of retracting spring.This has simplified the operation of this syringe, and structurally particularly advantageous in this case is that release-push is located on the arm of double-arm trip lever.The structural design of trip lever is, the supporting arrangement of its direct relief sleeve, wherein, sleeve pipe itself has a bearing that is used for supporting container, this bearing by collision on telescopic supporting member and moved on to the off-position by it.Supporting member be actually one along action direction by the spring-loaded latch that is contained on another arm of trip lever.Its back side constitutes the control corresponding inclined-plane.Extend by making trip lever in the apparatus shell, be in substantially parallel relationship to assembly container/sleeve pipe ground, made full use of the outer cover length that needs anyway.A kind of even have independently that the scheme of significance is, sleeve pipe can be from the handle installed of output jet pipe there by means of one with container, guard shield preferably, be moved back into the position that spring pressure loads, container is driven a centre position in this case, from here, by handling the position that a push-pull bar can place container its spring pressure to load.Another kind of alternative plan also can be implemented the charging stroke and compress accumulator by this push-pull bar.In addition, further design code, push-pull bar passes a telescopic pod, and its upper limb constitutes the backstop of interlock.Another measure of taking is that the spring of container is adjusted greatlyyer than the strength of telescopic spring.Also have a favourable design to be a lid round the output jet pipe at last, it has ring cavity, the backstop border when being used for wall as guard shield and inserting.In a word, created a kind of easy operating, best satisfy frequent usually instructions for use, small-sized, can manual syringe, it can very rapidly be feeded again and the amount that repeatability is arranged exactly is provided.

The embodiment that represents by means of accompanying drawing describes object of the present invention in detail below.Wherein:

Fig. 1 is by apparatus perspective view of the present invention, and the sealing Buddhist monk does not feed;

Fig. 2 is the apparatus exploded view when changing cartridge case, takes off handle, and expression syringe needle and the needle housings that separates;

Fig. 3 apparatus vertical section, sealing and not charging (situation that Fig. 1 is pressed in expression);

Fig. 4 apparatus is feeded, is similarly vertical section;

Fig. 5 is by the vertical section of the handle that takes off;

Fig. 6 apparatus is in implementing injection process or after implementing injection; And

Fig. 7 amplifies the check valve of representing to be located between storage compartment and the buffer.

The apparatus V that is designed to syringe comprises long basically orthogonal, a flat shell 1, is used to export the accurate and amount 2 ' that repeatability is arranged that is ready in storage compartment 3 for the liquid 2 that uses.

Relevant liquid 2 can relate to medicine, the post-operative treatment of biological example.Shi Zhi realizes by output jet pipe 4.Connect an entry needle 5 in its back, entry needle is fixed by a so-called 1uer joint 6.The section of cooperation 8 that is shaped on screw thread in its ridge 7 and the apparatus V head 9 is rabbeted mutually.

The cooperation section 8 that is shaped on screw thread is formed in round annular wall 10 inboards of output jet pipe 4 roots of slightly tapered extension.Entry needle 5 or syringe needle are contained on the cover tubular needle stand 11, the wall that is shaped on and exports to the latter's funnel-form jet pipe 4 inside taper that matches accordingly.Can produce good connection sealing thus.Awl is less.

Removable cartridge case K represents storage compartment 3.It relates to so-called glass ampule.Its bottom end opening also has an auxiliary follow up piston 12, and auxiliary follow up piston 12 is along with liquid 2 outputs constantly increase towards the direction motion of the cervical region 13 of cartridge case K, finally by backstop before the internal shoulder 14 of cervical region 13.Along outbound course its back the mouth by the diaphragm seal that can pierce through 15 shutoff.Diaphragm seal is fixing with a crimp calotte 16.Crimp calotte 16 usefulness foils are made.The center paracentesis area strip off in a known manner of this fluid supply.Crimp calotte 16 is fixed on the cervical region 13 flange shape augmenting portion neck end lower limbs.

From the amount 2 ' of the liquid that will distribute 2 in above-mentioned source, supply with output jet pipes 4 by the buffer 17 of a corresponding delivery volume of restriction, inject destinatioies through entry needle 5 there.A centre gangway 18 constitutes corresponding flow bridge.

For buffer 17 sets an output piston 19.It moves in a cylinder 20.Cylinder 20 is extensions towards the shell internal direction of output jet pipe 4 annular wall 10.

Passage 18 both extends along the total length of piston rod 21, also extends along output piston 19 zones own, even also continues to extend in the center ozzle 22.Center ozzle 22 exceeds the end face of output piston 19 in buffer one side significantly.In the position of not feeding of sealing and at injection position, the ozzle 22 that outer wall shrinks towards the free end direction inserts in the hollow section 4 ' of the corresponding sharpening of a shape of exporting jet pipe 4.Therefore the amount 2 of distributing in inject state " discharge from buffer 17 to the drains, especially because the end face of output piston 19 cylinder 20 cylindrical sections in the transition region of the district's direction of fining away, have one adaptive that is with the corresponding contour shape 4 of convex shoulder ".

End Duan Youyi screw thread base 23 of piston rod 21 one side in the storage compartment.The female thread engagement that matches of its external screw thread and tank container 24.The jar shape cavity 25 of container 24 can be as shown in the figure simply by inserting a cartridge case K indirectly as storage compartment 3, or directly as storage compartment 3, will take preventive measures for nothing to find fault with, be without rebuke ground meets hygienic requirements ground receiving fluids 2 this moment.

Be communicated with in order to flow with passage 18, cross wall 26 central authorities that container 24 constitutes the bottom connect.Cross wall 26 with jar shape cavity 25 be divided into one long in storing one side the chamber and a weak point in the chamber of output jet pipe one side, screw thread base 23 is contained in short indoor.Cross wall 26 has a connection channel 27.It stretches into that section in the storing one side jar shape cavity 25, is designed to sharp-pointed hollow needle 28.It is the part of docking facilities, and its adjacent part is the top diaphragm seal of having mentioned that pierces through 15.Can know the puncture position of finding out in crimp calotte 16 central authorities of suitable strip off by figure.

In buffer one side, cross wall 26 transition are a cylindrical protrusions 29 (see figure 7)s.It is with hemispherical dome 30 end spaced apart with the edge.In its summit, feed interface channel 27 the termination there.

Dome 30 has an arcuate walls section 31.It constitutes a check valve 32.What relate to here is a kind of slit valve.The marginal branch of dome-shaped wall section 31 leans against the screw thread base 23 step-like end faces that hollow out and makes in the medicated cap shape sealing inserts 33 between the assembly projection/dome 29/30 of the profile that matches.

The supporting seam has appropriate size.Sealing inserts 33 is obviously made with rubber or rubber elastic material.Screw thread base one side leaves the slit before the wall section.

The above-mentioned identical materials of output piston 19 usefulness is made, and its shape is contained on the piston rod 21 gill fungus shape flanges suitably, and has common piston ring.

The filling of buffer 17 is moved by means of output piston 19 3 directions towards the storage compartment.Form vacuum in the cylinder 20 at this moment, this vacuum causes sucking liquid 2 through flow bridge 27,18,22.The edge, slit of wall section 31, because match that is the hemispheric recessed cavity 23 ' of screw thread base 23 shapes so depend on open condition in this case, can slightly lift from dome 30, cavity 23 ' has played intermediate cavity seemingly.

Because the guard shield 34 that seals is arranged, avoided sucking unnecessary air through output jet pipe 4.Guard shield 34 has seal 35 (see figure 3)s that are contained on the related channel program section mouth end.

Guard shield 34 also plays apparatus V charging handle simultaneously.It can be connected with cylinder 20 by 1uer joint 6 (H).For this reason, it stretches out on the projection 37 on the guard shield 34 end limits 36 that are designed to jar shape on an ozzle shape ground, is shaped on the screw thread bar 38 suitable with ridge 7, and it also can be designed as the continuously steep screw thread of single head or bull.38 interlockings of screw thread bar are in the section of matching that is shaped on screw thread 8.Screw thread/sealing station determines that accurately this abuts on the shell backstop 39 by above-mentioned end limit 36 and realizes.This backstop 39 is located at an inside that is designed to the lid 48 of jar shape equally.The opening direction of lid 40 is back to shell 1, and the opening direction of guard shield 34 is then opposite.Fig. 3 has represented the backstop state.Handle H has approximately inserted 1/2nd length.

For the ease of grasping, be shaped on vertical stria especially on the external wall section of freely stretching out in not inserting ring cavity 41.Represent these strias with symbol 42.The lid 40 of jar shape has a central annular pipeline section 43.It stretches out from the free end of lid.Its internal diameter is designed to, and makes the identical with it cylinder of annular wall 10 or diameter 20 motion vertically therein with guiding.Annular pipeline section 43 is contained in the ring cavity 44 that matches of the guard shield 34 that also is designed to dual wall type.The seal 35 that is contained in the internal ring wall 45 rests on the cross wall 46 of this internal ring wall 45.

One side extends for a sleeve pipe 47 to cylinder 20 in the storage compartment.Sleeve pipe 47 is round container 24, and container 24 can have backstop restrictedly to be guided therein vertically.A ring segment that sandwiches 48 constitutes end stop.Annular convex shoulder 49 is provided at the backstop of buffer one side.Formed this convex shoulder 49 at the cylinder 20 of minor diameter and the offsetting of the wall between nearly 3 times of big cylinder-shaped sleeves 47.

These two parts 24,47 of moving are vertically loaded by the spring of equidirectional.Two springs 50 and 51 are contained in the upper end of container 24 and sleeve pipe 47, that is discharge that end of directions back to liquid 2.What relate to here is spiral compression spring.The spring 50 of container 24 is enclosed within of container 24 and is designed on the end section of step-like retraction, and is pressed against on the inboard of ring segment 48 with its outermost turn.Spring 50 that is to say that along the longitudinal centre line x-x effect of apparatus V spring 50 is in and the liquid bridge of arranging coaxially to each other and the mobile concentric position of piston.

Except that this inner spring-loaded of container 24, itself be bearing on the spring of having mentioned 51 round the container and the sleeve pipe 47 of guiding this container, 51 on spring is bearing in the relevant district of shell 1.Spring 51 is enclosed within on the short column 52 of a spring base that constitutes biasing.Corresponding short column 53 ' is from the cantilever 53 of sleeve pipe 47.It has constituted the spring base of a motion and spring 51 the end there has been housed.Short column 52,53 ' axis spatially are parallel to longitudinal centre line x-x ground and extend.

Spring 50,51 can be arranged to precompression.

The position that spring pressure loads keeps by pin pin R1 and the R2 that inserts automatically.The position that lock pin R1 keeps the spring pressure of sleeve pipe 47 to load.Relevant this lock pin R1 relates to is one and is the supporting member 54 of the latch that can move transverse to longitudinal centre line x-x in form.It is loaded by spring along the locking direction.The back side of above-mentioned latch represented and acts on by this spring with 55.Spring 55 is bearing on the shell 1 in circle position, the end of shell one side reliably with it.Here also feel relieved by short column 56.Circle is inserted in the groove 57 at the end of locking one side.Projection 58 constitutes the part that really play supporting role.Projection 58 is positioned at constituting below the annular convex shoulder 49 of stop convex shoulder with its downside of sleeve pipe 47.Supporting member 54 is by being placed on the sliding surface 59 that is made of shell 1 the inside.

The lock that goes of lock R1 is realized by trip lever 60.It is double-arm and can swingingly be bearing in shell 1 inside around axle journal 61.Its arm extends for a release-push 62.Release-push 62 can prevent accidental can be from the outside approaching breach 63 that is arranged in contiguously.Breach 63 is positioned at shell 1 that end back to entry needle 5.The size of release-push 62 provides a comfortable position to can be finger tip greatly.In addition, release-push 62 shelters from the member in its back, as spring 51 etc., they can not be seen from the outside.

The all-in-one-piece trip lever 60 with it in release-push 62 back is arranged essentially parallel to that assembly sleeve pipe/container 24/47 is lateral to move towards ground extension apparatus V shell 1 in.In this case, trip lever 60 another arm b are stretched over supporting member 54 locations always.Supporting member 54 is connected with trip lever 60 by pivot 64 there.Direction along arrow P loads to release-push 62.Be converted into the motion of extracting lock pin R1, that is to say projection 58 is extracted out below annular convex shoulder 49, so the container 24 that is subjected to the sleeve pipe 47 of spring pressure and is in charging position is with it before penetrated.

When trip lever 60 has directly discharged the supporting (seeing intermediate member 54) of sleeve pipe 47 by supporting member 54, discharged the container 24 that is subjected to spring pressure indirectly by lock pin R2, sleeve pipe 47 is provided with a bearing W in order correspondingly container 24 to be bearing in the sleeve pipe 47.This realizes by a retainer 65.Retainer 65 is contained in the guider 66.The direction of this guider is in the position perpendicular to assembly container/sleeve pipe 24/47 longitudinal centre line x-x substantially.Retainer 65 insert in the through hole 67 of sleeve pipes 47 walls and with its freely the inner end be that container 24 provides real bearing W, at the end of retainer 65 axle journal shapes part a control inclined-plane 68 is arranged, this control inclined-plane 68 is positioned at the outside of sleeve pipe 47 outer surfaces.Retainer 65 is loaded by spring 69 along the direction of locking on position.This spring 69 is bearing in the end of the lateral bracket that guider 66 is provided.

Control inclined-plane 68 is with its acute angle with respect to longitudinal centre line x-x, the projection 58 that makes supporting member 54 can mate there when lock R1 discharges from below enter.Consequently cause discharging container 24, then, container 24 moves with respect to sleeve pipe 47 under the pressure effect of spring 50.Therefore, the amount 2 ' that is in the buffer 17 is injected away.

Control inclined-plane 68 and protruding 58 back side mating reactions, the chain of command 70 that matches of corresponding incline direction is worked to have in this back side.

Container 24 extends for a push-pull bar that crosses out 71.The power that can overcome spring 50 by this push-pull bar 71 makes container 24 move with respect to sleeve pipe 24.Push-pull bar 71 passes a pod 72 of sleeve pipe 47 walls.Pod 72 available length are consistent with the stroke that sleeve pipe 47 moves each other with container 24.

The free end of push-pull bar 71 also further stretches out from a window 73 of shell 1.The end 71 ' of push-pull bar 71 constitutes a control crank.End 71 ' is in the grip groove 74 of apparatus V, and from then on groove is outwards not outstanding for it.Can prevent the release that takes place by accident and do not require like this.

Push-pull bar 71 is by the top edge 71 of its root " constitute servo-actuated backstop, this servo-actuated backstop is pod 72 the upper end 72 ' there in the part that matches of sleeve pipe one side.

Be also pointed out that shell 1 leaves one and storage compartment 3 and 24 jars of shape cavitys of container, 25 concentric charge doors 75.It uses plug closes.Stopper is represented with symbol 76.Head or base portion in the formation backstop of stopper broad are shaped on screw thread 77, and it and shell 1 one is in the screw-threaded engagement that matches of the screwed hole 78 in identical place with charge door 75.Stopper 76 passes the hole that matches of ring segment 48 with the less stepped region of its width, and the district that further reduces with a cross section inserts in the cylindrical cavity of cartridge case K then.Last that is the 3rd district that dwindles again insert in the central cavity of auxiliary follow up piston 12, and auxiliary follow up piston strengthens by the lining 79 that a size matches.

As seen from Figure 4, stopper 76 has a length of forcing the appropriate butt joint of cartridge case K, but meanwhile should consider free travel F (Fig. 3) vertically, and it equals the liquid level of hollow needle 28 basically or at least.Therefore, cartridge case K is only at apparatus V when filling with substance, that is will pack the amount 2 ' of distributing into buffer 17 time, just with is connected logical 27 and with the passage 18 that is connected with interface channel 27 connection on mobile.

The work of apparatus V is as follows: by opening the cartridge case K that packs into of storage compartment 3.Stopper 76 is owing to a slot 80 being arranged so can operate by the mode of spiral, for example by means of one piece of coin.Cartridge case K inserts as shown in Figure 2.Docking location as shown in Figure 3 can reach by firmly overcoming described axial free travel F beginning most, and at this moment, cartridge case inserts in jar shape cavity 25 fully, and stopper also adds.Otherwise the advantage of utilizing axial free travel to bring is, only when people use this syringe, that is when loading onto entry needle 5, flow bridge is just put up.

Then, in order to cause the state that is ready to feed, by means of handle H, that is guard shield 34, the power that the cylinder 20 that once uses before for example and stretch out is overcome spring 51 moves on to shell 1 inside.By using 1uer joint 6,, can obtain appropriate operational annexation through screw thread bar 38.Pushing direction represents with y.In this moving process, spring 50 makes output piston 19 remain on the most forward position.The supporting member 54 of latch shape click below annular convex shoulder 49 has constituted the lock pin R1 there with rattling away.It is in the not centre position of charging of sealing as shown in Figure 3 now.

Carry out the filling of buffer 17 from here on, this realizes by container 24 and relatively moving of sleeve pipe 47.For this reason, the power that overcomes spring 50 along the direction of arrow y is moved further push-pull bar 71, until the position that loads by spring pressure shown in Figure 4.Installed material along with reaching this position apparatus.As can be seen, in this operating process, output piston 19 moves along the direction of arrow y in cylinder 20.The vacuum of Xing Chenging thus, the amount accurately 2 ' that will inject sucks buffer 17.Before the amount 2 ' back side from output piston 19 is introduced to the end face of output piston formation pressurization bottom.This becomes a mandarin check valve 32 controls.Can not suck unnecessary air, because seal 35 has sealed the mouth of output jet pipe 4 the channel section there.

In order to use the amount 2 ' of this distribution, screw off handle H now, load onto entry needle 5 or syringe needle by 1uer joint 6.This can contamination-freely finish by utilizing grafting handle 82, and this grafting handle can have been bought on market and entry needle 5 can sterilely be installed.Between the inwall of the needle stand 11 of 1uer joint 6 and grafting handle 82, be shaped on and drag projection accordingly.

Container 24 remains on the position that spring pressure loads by lock pin R2 by the bearing W that works there.

Can inject now.For this reason, depress release-push 62.Trip lever 60 overcomes the power swing of spring 55, unclamps lever 60 these springs 55 of back and again trip lever 60 is pressed onto the lock position; This spring 55 also plays back-moving spring.By pressing button supporting member 54 is removed from sleeve pipe 47.Sleeve pipe 47 has lost its supporting by projection 58, and promptly mobile against being directed downwards of arrow y.Therefore entry needle 5 makes entry needle 5 freely stretch out and thrust the injection location 83 of biology from central ring pipe section 43 from for the protection entry needle shifts out round its lid 40 usually.Therefore can carry out subcutaneous or intramuscular injection apace.

In the ending phase of this downward injection that promotes by spring, receive retainer 65 that lock pin R2 constitutes and enter supporting member 54 and match in the active region of chain of command 70.This situation as seen from Figure 6.The protract position of this bearing from playing supporting role is with respect to the downside recession of container 24.The direction of spring 50 contrary arrow y is pressed output piston 19.The amount 2 ' of distributing is all penetrated, although because form output overvoltage, because the effect of check valve 32 can not be back in the storage compartment and go.

In a word, acting as of apparatus, conveyor piston 19 comprises the container 24 of storage compartment 3 with it, at first move up and carry out the filling of buffer 17, that is implement the charging stroke along the direction of arrow y, and discharge by corresponding, the cylinder 20 of output piston 19 that constitutes buffer 17 is with container 24, moves along the rightabout of arrow y.This rightabout stroke, that is, take place in the continuous stages in time, this one stroke along the sliding motion of the direction opposite with arrow y by an entry needle 5 from covering 40 propelling strokes that stretch out and an injection stroke is formed.They carry out synchronously when the beginning in these stages, and implement follow-up injection stroke in ending phase.

To operating particularly advantageously be, this two stages by a common release-push 62 correspondingly retracting spring be used for starting.

Only when taking entry needle 5 away, just might feed again.Because the length of entry needle 5 does not allow mounting knob H, can implement moving of cylinder 20 by means of handle, this moves and causes a complete spring charging stroke.In addition, 1uer joint 6 is occupied by ridge 7.This causes forcing installs new syringe needle.Therefore, this syringe layman also definitely can use.

Also can be advantageously under the situation of certain safety, spring charging stroke z directly implements by push-pull bar 71.Stipulate that in this case the spring 50 of container 24 is adjusted into bigger than spring 51 strength of sleeve pipe 47.Utilize end with the 72 ' pod of representing 72 as servo-actuated backstop.The spring 51 of " soft " at first is out of shape.

The content of glass ampule is approximately deposited the amount 2 ' that can be divided into 10 five equilibriums.Discharging the situation of charging can observe by enumerator 84.Enumerator 84 is positioned on the wide side of apparatus V.

Annular convex shoulder 49 leans against on the sliding surface 59 of corresponding prolongation at its underpart terminal location, or as shown in the figure, lean against on the blend stop 85 that slightly exceeds sliding surface 59 towards the sleeve pipe direction border backstop 86 when its end limit in supporting member one side constitutes supporting member 54 lockings.

All disclosed features all are important for the present invention.The disclosure that has comprehensively comprised accessory priority document (copy request formerly) in application open its objective is that characteristic synthetic with these files is in the application's claim.

Claims (20)

1. By the amount (2 ') of distributing from a storage compartment (3) that is preferably cartridge (K) shape through an apparatus (V) that is preferably designed as output jet pipe (4) output liquid (2) of plug-in type entry needle (5), it is characterized in that one from the storage compartment (3) accept the buffer (17) of the amount (2 ') of distribution, for it sets an output piston (19) and a passage (18) that is used for filling buffer (17) is arranged.
2. 2. according to the described apparatus of claim 1, it is characterized by: the container (24) that output piston (19) connects same interior dress storage compartment (3) can move (along arrow y) for filling buffer (17) together, and the cylinder (20) of the formation buffer (17) of output piston (19) container (24) therewith moves along opposite direction together.
3. 3. according to one of all claim in prostatitis item or multinomial described apparatus, it is characterized in that a check valve (32) that is positioned between storage compartment (3) and the buffer (17).
4. 4. according to one of all claim in prostatitis item or multinomial described apparatus, it is characterized by: carry out along reciprocal moving by last continuous stages of time.
5. 5. according to one of all claim in prostatitis item or multinomial described apparatus, it is characterized by: two stages obtain by discharging the spring (50,51) that loads.
6. 6. according to one of all claim in prostatitis item or multinomial described apparatus, it is characterized by: cylinder (20) extends for the sleeve pipe (47) round container (24).
7. 7. according to one of all claim in prostatitis item or multinomial described apparatus, it is characterized by: two springs (50,51) are contained in the upper end of sleeve pipe/container (24/47), and are bearing in the shell (1).
8. 8. according to one of all claim in prostatitis or multinomial described apparatus, it is characterized by: shell (1) has a concentric charge door in storage compartment (3) (75) with container (24).
9. 9. according to one of all claim in prostatitis item or multinomial described apparatus, it is characterized by: the available plug closes of charge door (75).
10. 10. according to one of all claim in prostatitis item or multinomial described apparatus, it is characterized by: stopper (76) has a length of docking with cartridge case (K) by force rightly.
11. 11. according to one of all claim in prostatitis item or multinomial described apparatus, it is characterized by: cartridge case (K) is a glass ampule.
12. 12., it is characterized in that effect by a common release-push (62) retracting spring according to one of all claim in prostatitis item or multinomial described apparatus.
13. 13. according to one of all claim in prostatitis item or multinomial described apparatus, it is characterized by: release-push (62) is located on the arm (a) of double-arm trip lever (60).
14. 14. according to one of all claim in prostatitis item or multinomial described apparatus, it is characterized by: trip lever (60) is the supporting arrangement (supporting member 54) of relief sleeve (47) directly, wherein, sleeve pipe (47) itself has a bearing (W) that is used for supporting container (24), and this bearing (W) is by colliding on the supporting member (54) of sleeve pipe (47) and being moved on to the off-position by it.
15. 15., it is characterized by according to one of all claim in prostatitis or multinomial described apparatus: supporting member (54) be one along action direction by the spring-loaded latch that is contained on another arm of trip lever (60) (b).
16. 16. according to one of all claim in prostatitis item or multinomial described apparatus, it is characterized by: trip lever (60) is in substantially parallel relationship to assembly container/sleeve pipe and extends in apparatus (V) shell (1) (24/47).
17. 17. according to one of all claim in prostatitis item or multinomial described apparatus, it is characterized by: sleeve pipe (47) can be with container (24) by means of the handle (H) that can install from output jet pipe (4) there, guard shield (34) preferably, retract the position that spring pressure loads, container (24) is driven a centre position (Fig. 3) in this case, from here, by handling the position that a push-pull bar (71) can place container (24) its spring pressure to load.
18. 18. according to one of all claim in prostatitis or multinomial described apparatus, it is characterized by: push-pull bar (71) passes a pod (72) of sleeve pipe (47), the top edge of push-pull bar (71 ") constitutes the backstop of servo-actuated.
19. 19. according to one of all claim in prostatitis or multinomial described apparatus, it is characterized by: the spring (50) of container (24) is adjusted greatlyyer than the strength of the spring (51) of sleeve pipe (47).
20. 20. according to one of all claim in prostatitis or multinomial described apparatus, it is characterized by: the lid (40) round output jet pipe (4), it has ring cavity (41), the backstop border when being used for wall as guard shield (34) and inserting.

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