CN105126203B

CN105126203B - Syringe

Info

Publication number: CN105126203B
Application number: CN201510034446.0A
Authority: CN
Inventors: H.贝赫托尔德
Original assignee: Haselmeier AG
Current assignee: Medmis Switzerland Ag
Priority date: 2012-02-10
Filing date: 2013-02-06
Publication date: 2019-01-04
Anticipated expiration: 2033-02-06
Also published as: WO2013117332A1; DE202012001411U1; BR112014014902B1; MX2014009123A; CN104220117A; RU2615122C2; MX344115B; BR112014014902A2; RU2014134275A; CN105126203A

Abstract

Syringe (1) has shell (2), is wherein being configured with the receiving portion for the container (5) with injecting fluid.Syringe (1) has operation button (8) with the amount that can be extruded from container (5) for setting injecting fluid.For this purpose, operation button (8) can be rotated.In rotation, operation button (8) is moved on the square direction up towards distal side of the longitudinal central axis line (6) of syringe (1) relative to shell (2).In order to extrude injecting fluid from container (5), move operation button (8) on the square direction up towards the nearside of syringe (1) of longitudinal central axis line (6).When setting the amount of injecting fluid extruded, operation button (8) can be adjusted at least one injection position (100) and at least one latched position (101), the amount of the permission of setting injecting fluid in injection position (100), the amount of setting injecting fluid not allowed in latched position (101).In injection position (100), operation button (8) can move on the direction on the direction of longitudinal central axis line (6) proximally.In order to avoid injecting the amount of injecting fluid not allowed, it is arranged to movement of the lock operation button (8) on the direction on the direction of longitudinal central axis line (6) proximally in latched position (101).

Description

Syringe

Technical field

The present invention relates to a kind of syringes, have: shell, are wherein being configured with the appearance for the container with injecting fluid Receive portion；Operation button, can be rotated with for set injecting fluid can from the container extrude amount and rotation when in institute The side for stating the longitudinal central axis line of syringe is moved up towards on the direction in the distal side of the syringe relative to the shell, In, in order to extrude injecting fluid from the container, the operation button is in the side of longitudinal central axis line up towards the syringe Moved on the direction of nearside, which is characterized in that the syringe have shot sleeve, torsionally and can axially move with The shell is connected, wherein and the shot sleeve is connected by the first threaded joints with dosage mechanism, and wherein, The dosage mechanism is supported to relative to the shell can be rotated and along axial irremovable, and wherein, the instrument used for injection There is dosing piston, be torsionally connected with the operation button and be connected by the second threaded joints with the dosage mechanism It connects, wherein plug is disposed in the inside of the container, the dosing piston sticks at plug, wherein the dosage is living Filling in has the piston disc sticked at the plug and the piston rod being rotationally connected with the piston disc.

Background technique

A kind of syringe as known to 10 2,007 026 083 A1 of document DE, wherein in order to set liquid to be injected It measures and rotates operation button.By rotating operation button, operation button is together with shot sleeve towards the side in the distal side of syringe It moves upwards.Operation button has buckling and locking device, ensures to adjust in position that operation button can only be subscribed in structure.In Between position setting due to buckling and locking device elasticity wall without can be achieved.In order to extrude injecting fluid, make operation button towards close It is moved on the direction of side.

In order to which operation button is automatic from middle position and reliably jumps in latched position, clamping lock must be sufficiently tight, and Radial latched position must be adjacent enough to close.However, the torque that the intensity effect operator of lock part must use, so as to Rotate operation button and setting dosage.In the structure of latched position possible spacing largely given and only can by Match in the limit of limitation with applicable cases.

It is a kind of for giving the syringe of drug as known to 1 326 664 B1 of document EP.The syringe has knob, turns Dynamic knob sets the amount of liquid of injectable.Operation button only can be rotated until the maximum dosage that can be set.However it, it can be achieved that sets Fixed and injection is less than maximum dosage.

Summary of the invention

The purpose of the present invention is to provide such syringe, wherein only can by the injecting fluid of the amount of reservation from It is extruded in container and allows to be well matched with desired applicable cases.

The syringe of the purpose in this way realizes that is, it has: shell, is configured with wherein for injection The receiving portion of the container of body；Operation button, can be rotated with for set injecting fluid can from the container extrude amount and Relative to described on direction in rotation in the side of the longitudinal central axis line of the syringe up towards the distal side of the syringe Shell movement, wherein in order to extrude injecting fluid from the container, the operation button is in the side of longitudinal central axis line up towards institute It states and is moved on the direction of the nearside of syringe, which is characterized in that the syringe has shot sleeve, torsionally and can be along axis To being movably connected with the shell, wherein the shot sleeve is connected by the first threaded joints with dosage mechanism, And wherein, the dosage mechanism is supported to relative to the shell can be rotated and along axial irremovable, and wherein, described Syringe has dosing piston, is torsionally connected with the operation button and passes through the second threaded joints and the dosage Mechanism is connected, wherein plug is disposed in the inside of the container, the dosing piston sticks at plug, wherein institute Stating dosing piston has the piston disc sticked at the plug and the work being rotationally connected with the piston disc Stopper rod, wherein the piston rod is torsionally connected with the guide portion of the operation button by covering overlapping piece, wherein the intussusception Part is not only torsionally connected with the guiding segments of the dosing piston but also with the guide portion of the operation button, wherein such as Fruit sets maximum dosage, and the guide portion of the operation button has spacing relative to the piston rod, and wherein, between being somebody's turn to do Away from by set overlapping piece bridge joint.

In set syringe, operation button is allowed to be maintained at the position of the amount not allowed corresponding to injecting fluid In.Therefore the such buckling and locking device for not needing design operation button, ensures operation button between two latched positions Position turned in one in two latched positions automatically.If operation button is necessary between two amount allowed settings Relatively very big angle (such as 90 ° or 180 °) is rotated, then is also obtained between the injection position of the permission of operation button Between position.If the position of the amount of the permission corresponding to injecting fluid of operation button separates very wide, can only be difficult really Protecting buckling and locking device does not allow the middle position of operation button.

In order to which in syringe, (its operation button can be adjusted to locking bit associated with the amount of injecting fluid not allowed Set) in avoid the amount not allowed of injection injecting fluid, be arranged in latched position lock operation button towards longitudinal central axis Movement on the direction of the nearside of line.Therefore it can cancel such buckling and locking device, ensure that operation button is merely retained in injection position It sets and can not be adjusted in latched position.Buckling and locking device for operation button can match with the demand of operator and example It is such as configured to the clamping lock that can be felt strongly, or is configured to also allow to operate with the clamping lock that can seldom feel The middle position of button.It is achieved in very high handling comfort and can ensure simultaneously, not the amount of injecting fluid not allowed It can extrude from container.

" direction of nearside " indicates such injection direction, the i.e. direction towards the receiving portion for injection needle or note herein Penetrate the direction that liquid extrudes from container in this direction." direction in distal side " indicates opposite direction, i.e., far from injection needle Direction.The end in the distal side of syringe is back to the end of injection needle.Utilize " nearside " indicate syringe injection when Side towards piercing position, and " distal side " is utilized to indicate back to the side for being pierced into position.

Advantageously, syringe has the first buckling and locking device, limits at least one injection position.The buckling and locking device is herein such as This design, that is, can also set latched position associated with the amount of injecting fluid not allowed.Advantageously, the first buckling and locking device With at least one latch elements, with detent profile collective effect.Advantageously, latch elements are entrapped in card in injection position In the clamping lock recess of lockwheel exterior feature.Latch elements deviate in latched position from detent profile.It is arranged to syringe with locking wheel Exterior feature, lock operation button is relative to shell court with the latch elements collective effect of offset and in the latched position of operation button Movement on the direction of nearside.It is possible thereby to which simple mode ensures that operation button only can be in structure in scheduled injection position It is moved on direction proximally.

Advantageously, locking profile construction is at operation button.Thus compact construction is obtained.Advantageously, latch elements cloth It sets within operation button.Operation button can be especially with respect to latch elements in the first position in distal side and the second position of nearside Between adjust.In the first position of operation button, latch elements are arranged in the first axial section of operation button, Allow the offset of latch elements.Advantageously, latch elements are arranged in the second axial section in the second position of operation button In, lock the offset of latch elements.

Advantageously, latch elements can deviate outward about longitudinal central axis line, i.e., far from longitudinal central axis line.Advantageously, it operates Button has the first internal diameter in the first section, is greater than the second internal diameter in the second section.It is possible thereby to simple mode Realize locking profile.Advantageously, operation button is towards springing (gefedert) on the direction of the first position in its distal side.

Advantageously, syringe has shot sleeve, torsionally and with can axially move is connected with the shell.Injection set Cylinder is connected by the first threaded joints with dosage mechanism, and dosage mechanism is supported to rotatably and along axial direction not relative to shell It is removable.Therefore, the rotation of dosage mechanism causes the axial movement of shot sleeve by the first threaded joints.Advantageously, it infuses Emitter has the first attachment, antitorque establishing between operation button and dosage mechanism in the first position of operation button Connection.Therefore, the rotation of operation button rotates dosage mechanism, makes shot sleeve in axial direction from there through the first threaded joints Side moves upwards.Advantageously, the antitorque connection between operation button and dosage mechanism is established by drivening piece, takes part to Torsionally it is connected with dosage mechanism and is axially fixed ground and is rotationally connected with shot sleeve.Therefore, if rotation Operation button, drivening piece move in the axial direction together with shot sleeve.

Advantageously, operation button is torsionally connected with shot sleeve in its second position by the second attachment.Have Sharp ground, the latch elements of the first buckling and locking device are a part of the second attachment, and detent profile construction is at shot sleeve.By This is simply constructed.If operation button is in the locked position, the axial movement of latch elements locking operation button And second attachment can not be closed.

Advantageously, syringe has dosing piston, torsionally with operation button and by the second threaded joints and matching Measuring mechanism is connected.The rotation of dosage mechanism causes the movement of dosing piston by the second threaded joints, is used to extrude note Penetrate liquid.As long as operation button is in the first position in distal side and is torsionally connected with dosage mechanism and dosing piston, The relative motion by the second threaded joints can not be realized between dosing piston and dosage mechanism, and injecting fluid can not be calm It is extruded in device.Thus ensure only extrude injecting fluid in the second position of operation button in structure.However, if behaviour It is in injection position as button, that is, is in position associated with the amount of the permission of injecting fluid, at this moment can only set behaviour Make the second position of button.

If dosing piston is torsionally connected by covering overlapping piece (Teleskopteil), it can be achieved that injecting with operation button The structure size of the very little of device, wherein set overlapping piece can be relative to one in component dosing piston and operation button along axial shifting It is dynamic.Set overlapping piece can axially move relative to dosing piston and immovably be maintained at operation button along axial direction, or can It is maintained at operation button irremovable and axially translatablely relative to dosing piston along axial.It can be opposite because covering overlapping piece One in part dosing piston and operation button is mobile along axial (i.e. on the direction of the longitudinal central axis line of syringe), institute With dosing piston and operation button can be shorter implement.Thus the total length of syringe is reduced.

If dosing piston has guiding segments, and if set overlapping piece has two guidance bridge parts, set relatively Side at stick at the guide surface of guiding segments, then reach simple construction.If operation button equally has, there are two draw Bridge part is led, at least one receiving portion of set overlapping piece is extended through, wherein guidance bridge part is the complete pressing operation button the case where Under in circumferential direction set overlapping piece guidance bridge part between stick on dosing piston guiding segments at, then obtain compact Construction.Because the guidance bridge part of set overlapping piece and operation button adjoins in circumferential direction and sets, and obtains syringe more Small outer diameter.

Can it is desirable that, be also that can feel or can for the user when extruding injecting fluid from container It hears, realizes the extrusion of injecting fluid.Settable second buckling and locking device thus, acts as between dosage mechanism and shell With.The only activity when setting the amount of injecting fluid extruded of first buckling and locking device, and the second buckling and locking device is not only infused in setting When penetrating the amount of liquid extruded and the activity when extruding injecting fluid from container.Second buckling and locking device can be designed to herein It is very smooth, so as to the power that is applied in the injection process for extruding liquid by operator since the second buckling and locking device is only few Perhaps it improves.Due to two buckling and locking device activities when setting the amount of injecting fluid extruded, so can for operator Feel very well and/or form latched position with hearing.

Detailed description of the invention

The embodiment of the present invention is illustrated by attached drawing below.Wherein:

Fig. 1 shows the side view of syringe,

Fig. 2 shows the section along the line II-II in Fig. 1,

Fig. 3 shows the side view of the syringe of Fig. 1 after the amount of setting injecting fluid extruded,

Fig. 4 shows the section along the line IV-IV in Fig. 3,

Fig. 5 shows the side view of the operation button of syringe,

Fig. 6 shows the section along the line VI-VI in Fig. 5,

Fig. 7 shows the section along the line VII-VII in Fig. 5,

Fig. 8 shows the section along the line VIII-VIII in Fig. 6,

Fig. 9 shows the diagram of the perspectivity of the latch piece of syringe,

Figure 10 shows the view of latch piece on the direction of observation of the end of the nearside of syringe,

Figure 11 shows the side view of latch piece,

Figure 12 shows the section along the line XII-XII in Figure 11,

Figure 13 shows the side view of the shot sleeve of syringe,

Figure 14 shows the section along the line XIV-XIV in Figure 13,

Figure 15 shows the section along the line XV-XV in Figure 13,

Figure 16 shows the diagram of the perspectivity of the drivening piece of syringe,

Figure 17 shows the side view of the drivening piece of Figure 16,

Figure 18 shows the section along the line XVIII-XVIII in Figure 17,

Figure 19 shows the section along the line XIX-XIX in Figure 17,

Figure 20 shows the section along the line XX-XX in Figure 17,

Figure 21 shows the side view of the dosage mechanism of syringe,

Figure 22 shows the section along the line XXII-XXII in Figure 21,

Figure 23 shows the section along the line XXIII-XXIII in Figure 21,

Figure 24 shows the diagram of the perspectivity of the set overlapping piece of syringe,

Figure 25 shows the side view of set overlapping piece,

Figure 26 shows the side view on the direction of the arrow XXVI in Figure 25,

Figure 27 shows the section along the line XXVII-XXVII in Figure 25,

Figure 28 shows the side view of dosing piston,

Figure 29 shows the section along the line XXIX-XXIX in Figure 28,

Figure 30 shows the section along the line XXX-XXX in Figure 28,

Figure 31 shows the side view of the housing component of syringe,

Figure 32 shows the side view of the housing component on the direction of the arrow XXXII in Figure 31,

Figure 33 shows the section along the line XXXIII-XXXIII in Figure 32,

Figure 34 shows the section along the line XXXIV-XXXIV in Figure 32,

Figure 35 shows the diagram of the amplification of the section XXXV of Figure 33,

Figure 36 shows the section along the line XXXVI-XXXVI in Figure 33,

Figure 37 shows the diagram of the amplification of the section XXXVII of Figure 33,

Figure 38 shows the section along the line XXXVIII-XXXVIII in Fig. 1 in the injection position of operation button,

Figure 39 shows the section along the line XXXVIII-XXXVIII in Fig. 1 in the latched position of operation button,

Figure 40 shows after the amount of setting injecting fluid extruded and operation button is being pressed into its nearside The side view of syringe after in the second position,

Figure 41 shows the section along the line XLI-XLI in Figure 40,

Figure 42 shows the section along the line XXXVIII-XXXVIII in Fig. 1 in an embodiment of syringe,

Figure 43 shows the section along line XXXVIII-XXXVIII by another embodiment of syringe, wherein operation Button is in injection position.

Specific embodiment

Fig. 1 shows syringe 1, with shell 2.Shell 2 includes the housing component 3 in distal side and the shell for being fixed on distal side Holder 4 at the side of the nearside of part.Holder 4 can be fixedly secured at the housing component 3 in distal side, for example, by welding with Be connected.However, holder 4 can be also removably held at housing component 3, such as it is screwed at housing component, to make it possible to It is enough to realize that replacement is arranged in container 5 in holder 4, showing in Fig. 2.Container 5 contains injecting fluid.The formation of holder 4 Receiving portion for container 5.Holder 4 has connecting element in the end of its nearside, and injection needle can be fixed at this. In this embodiment, connecting element is standardized external screw thread 11, can screw on the injection needle with corresponding internal screw thread on it Head.Instead of external screw thread 11, also other connecting elements can be set in the end of the nearside of holder 4.Connecting element with it is set The injection needle for the type set matches.Can be placed on shell 2 it is being represented by dotted lines in Fig. 1, only partially show it is close Sealing cover 10 surrounds holder 4.Syringe 1 has longitudinal central axis line 6.Operation is disposed in the end in the distal side of syringe 1 Button 8.

As Fig. 1 is shown, the housing component 3 in distal side has form 7, such as is made of transparent plastics.Form 7 can It manufactures as individual component or is made with the housing component 3 of two component injection forming methods and distal side and is integrated.It is also settable It is made of completely transparent plastics together at housing component 3 with form 7, other than in the region of form 7, hair can be carried out to it Surface treatment, japanning are covered in other respects, so that only the region of form 7 is transparent.

The construction of syringe 1 is shown in more detail in Fig. 2.Plug 21 is disposed in the inside of container 5, the dosage of syringe is living Plug 103 sticks at plug 21.Dosing piston 103 have stick on piston disc 20 at plug 21 and with piston disc 20 The piston rod 19 being rotationally connected.Piston rod 19 is torsionally connected with the guide portion 17 of operation button 8 by covering overlapping piece 18 It connects.It is shown in Fig. 2 at operation button 8 in the first position 95 in its distal side.Pressure is disposed in the inside of operation button 8 Power spring 13, to operation button 8 towards loading on the direction of its first position 95.Compression spring 13 is supported on using first end It is supported at drivening piece 16 at the end side 105 of operation button 8 and using the second end.Drivening piece 16 is in operation button 8 in Fig. 2 Torsionally it is connected with operation button 8 in the first position 95 of middle display by the first attachment 23.Drivening piece 16 is arranged in behaviour Make at the periphery of the guide portion 17 of button 8.It is extended with the dosage mechanism 15 of sleeve-shaped at the peripheral place of drivening piece 16, is also claimed For graded tube and torsionally and with can axially move it is connected with drivening piece 16.

Dosage mechanism 15 is surrounded by shot sleeve 14, and shot sleeve 14 also equally utilizes the end in its distal side with drivening piece 16 It reaches in operation button 8.Dosage mechanism 15 is connected with shot sleeve 14 by the first threaded joints 33.Dosage mechanism 15 exists The end of its nearside can be rotated at supporting part 32 and immovably be maintained at housing component 3 along axial direction.Shot sleeve 14 It moves but is torsionally maintained in housing component 3 along axial (i.e. on the direction of longitudinal central axis line 6).The cloth in operation button 8 Be equipped with latch piece 12, be torsionally supported in operation button 8 and with 14 collective effect of shot sleeve and with 14 shape of shot sleeve At the first buckling and locking device 29.Second buckling and locking device 30 is between housing component 3 and the periphery of dosage mechanism 15 adjacent to dosage mechanism It works the end of 15 nearside.Extend in the section that buckling and locking device 29 and 30 is not shown in Fig. 2 herein, thus associated Reference label only illustrate the arrangement of buckling and locking device 29 and 30 wherein, and do not display the details of out its structure.Latch piece 12 is second A part of attachment 24, the second attachment 24 are opened in the first position of operation button 8 95.Second attachment 24 makes to be in Operation button 8 in its second position 96 (Figure 40) is torsionally connected with shot sleeve 14.

Fig. 2, which is shown, to be extruded injecting fluid later and is setting can extruding from container 5 when injecting next time for injecting fluid Amount before syringe 1.The position of shot sleeve 14 passes through the first backstop for being formed between shot sleeve 14 and housing component 3 26 limit.In order to set the amount to be injected of injecting fluid, operation button 8 is rotated.Operation button 8 resists in its first position 95 Ground is turned round to be connected with drivening piece 16 and dosage mechanism 15 and with dosing piston 103.If operation button 8 rotates, drivening piece 16 and dosage mechanism 15 rotate together.First threaded joints 33 cause the axial direction between shot sleeve 14 and dosage mechanism 15 Relative motion.If operation button 8 is rotated up towards corresponding to the side for improving set dosage, shot sleeve 14 is herein It is mobile (i.e. on the direction of arrow 25) on towards the direction in distal side.Due to supporting part 32 (its of the dosage mechanism 15 in housing component 3 Prevent the axial movement of dosage mechanism 15), shot sleeve 14 removes from housing component 3 along axial direction and drives drivening piece 16 and behaviour herein Make button 8.When setting the amount of injecting fluid extruded, not only the first buckling and locking device 29 but also the work of the second buckling and locking device 30 Dynamic, because not only operation button 8 is rotated relative to shot sleeve 14, but also dosage mechanism 15 is rotated relative to housing component 3.

Fig. 3 and 4 shows the syringe 1 after setting the amount of injecting fluid extruded.Here, having set can press The maximum amount of injecting fluid out.The position is limited by the second backstop 27, is similarly formed in shot sleeve 14 and shell Between part 3.

In order to extrude the set amount of injecting fluid, pressing operation button 8 on the direction of the arrow 28 in Fig. 4.Cause This first attachment 23 is opened, and the second attachment 24 is closed.This will also be further illustrated below.Compression spring 13 is such as This design, that is, before shot sleeve 14 moves in the axial direction, make operation button 8 relative to 14 court of shot sleeve first The side of nearside moves upwards.In the case where the second attachment 24 closure, operation button 8 is torsionally connected with shot sleeve 14 It connects.Since the side of shot sleeve 14 in the direction of the arrow 28 proximally moves upwards, dosage mechanism 15 is rotated.Second screw thread connects Socket part 34 is formed between dosage mechanism 15 and piston rod 19.Because piston rod 19 by set overlapping piece 18 torsionally with operation button 8 are connected, so piston rod 19 can not be rotated relative to shot sleeve 14.Therefore, dosage mechanism 15 is relative to shot sleeve 14 Rotation cause the movement on the direction of piston rod 19 proximally, piston rod 19 move plug 21 in container 5 and cause from Injecting fluid is extruded in container 5.Because dosage mechanism 15 is rotated relative to housing component 3, the second buckling and locking device 30 is being extruded It is equally extrusion movable and that injecting fluid is also acoustically indicated for operator in the case where injecting fluid.Because first is coupled Portion 23 has been unclamped, so drivening piece 16 can be rotated together relative to operation button 8 and dosage mechanism 15.

The component of syringe 1 is illustrated in detail below.Component is functional unit herein, for simplicity to its in piece into Row is described.However, in order to simplify the manufacture of part, it may be advantageous to which manufacture includes the element of multiple single-pieces.

The construction of operation button 8 is shown in more detail in Fig. 5 to 8.As Fig. 5 to 7 is shown, the guide portion of operation button 8 17 are formed by two guidance bridge parts 36, are upwardly oriented in the side of the longitudinal central axis line 6 of syringe 1.In guidance bridge part Guide surface 37 is configured at the longitudinal direction side of facing each other.

Operation button 8 has the first section 38, and operation button 8 has internal diameter a wherein.Towards distal side at the first section 38 The direction first line of a couplet be connected to the second section 39, internal diameter b is less than the internal diameter a in the first section 38.Between two sections 38 and 39 Step portion is formed, the locking profile 102 to be further illustrated further below is formed.On the direction of nearside, the first section 38 by The holding section 43 projected radially inward limits, as Fig. 8 is also shown.Keep 43 snap-on of section in shot sleeve 14 At the edge 49 shown in Figure 13 and therefore shot sleeve 14 is fixed on operation button 8 on the direction of longitudinal central axis line 6 Place.

Operation button 8 inside it in have from adapter tube 40 outstanding on the direction proximally of end side 105, in its end It is disposed with external toothing portion 41.As illustrated in fig. 8, external toothing portion 41 includes individual outwardly projecting tooth, with corresponding three A tooth is that one group of mode is adjacent to arrange, wherein interval is correspondingly formed between the tooth of single group.However, external toothing portion 41 Also extension can be placed outside in the entire of adapter tube 40.External toothing portion 41 is arranged in the first section 38.As Fig. 8 is also shown, Operation button 8 has the guiding groove 42 stretched in a longitudinal direction, extends through the first section 38 and the second section 39.At this Two guiding grooves 42 arranged disposed opposing each otherly are provided in embodiment.Guiding groove 42 is for being contained in shown in Fig. 9 The guidance bridge part 44 of latch piece 12.Latch piece 12 has annulus 107.It is disposed with radially at the side that it is opposite to set Outwardly projecting two guidance bridge part 44.44 respective carrier of bridge part, two latch arms 45 are guided, in circumferential direction court It guides and extends in the both direction of bridge part 44 and annulus 107 is arranged in the spacing of the very little relative to annulus 107 At the side of nearside.Inwardly projecting lock part 46 is configured in the free end of latch arm 45.Fig. 7 to 12 also shows this Situation.Latch arm 45 with lock part 46 forms latch elements.As Figure 10 is shown, latch arm 45 and lock part 46 exist It is Chong Die with annulus 107 from the point of view of on the direction of longitudinal central axis line 6, therefore annulus 107 is not protruded past.Lock part 46 with scheming Detent profile 47 collective effect of the construction shown in 13 at shot sleeve 14.Detent profile 47 its distal side end by First edge 48 limits, and keeps the second edge 49 after section 43 to limit by snapping into the end of its nearside.Such as Fig. 2 and As Fig. 4 is also shown, the first edge 48 in distal side reaches between the annulus 107 of latch piece 12 and latch arm 45 and therefore will Latch piece 12 is fixed at shot sleeve 14 on the direction of longitudinal central axis line 6.

As Figure 13 is shown, shot sleeve 14 has convex shoulder 97, and the outer diameter of shot sleeve 14 is proximally at this Become larger on direction.As Fig. 2 is shown, spacing c is formed between the end and convex shoulder 97 of the nearside of operation button 8.In court On the direction of nearside when pressing operation button 8, convex shoulder 97 forms the backstop for being used for operation button 8.Shot sleeve 14 has window portion 31, show that 54 residence of mark arrow of set dosage is protruded into window portion.Shot sleeve 14, which has, is arranged close to window portion 31 covering part 56.Covering part 56 is for covering dosage mechanism, to only can be seen that being arranged in for dosage mechanism 15 by form 7 Label in window portion 31.Covering part 56 extends up to the region of holder 4 in the position of syringe 1 shown in fig 1 and 2 In.As Fig. 1 is shown, it is disposed with tongue-like part 9 at the housing component 3 in distal side, extend on holder 4 and covers covering Portion 56.

As Figure 14 is shown, shot sleeve 14 is approximate to have inwardly projecting clamping lock prominent in the height of convex shoulder 97 Portion 53.It is provided with four clamping lock protruding portions 53 for being evenly distributed in surrounding in the present embodiment.53 clamping lock of clamping lock protruding portion exists At drivening piece 16, more specifically clamping lock is at the slot 59 of drivening piece 16 shown in figure 16 and 17, and is formed in Fig. 4 and shows The supporting part 35 for drivening piece 16 shown.Drivening piece 16 is by reaching the clamping lock protruding portion 53 in slot 59 along axial irremovable But it is rotatably supported at shot sleeve 14.

As Figure 14 is also shown, shot sleeve 14 has internal screw thread channel (Innengewindegang) 55, structure Cause the end of the nearside adjacent to shot sleeve 14.Internal screw thread channel 55 is interrupted in the region of clamping lock protruding portion 53, thus Shot sleeve 14 can be manufactured with injection moulding method.Internal screw thread channel 55 and dosage mechanism 15 are shown in Figure 21 and 22 External screw thread 62 forms the first threaded joints 33.

Such as the display of Figure 14 and 15, shot sleeve 14 is at it back to having longitudinal slot 50 at the side of window portion 31.It is vertical To the construction of slot 50 in the region of the thickening part of shot sleeve 14 89.The protruding portion 90 of housing component 3 reaches (Figure 33 in longitudinal slot 50 With 37).Protruding portion 90 has the arris 91 of nearside, and the shown in Fig. 4 is formed in the end 52 of the nearside of longitudinal slot 50 Two backstops 27.In addition, protruding portion 90 has the arris 92 in distal side, the first backstop is formed with the end 51 in the distal side of longitudinal slot 50 26 (Fig. 2).As Figure 36 is shown, protruding portion 90 is arranged in longitudinal slot 88.The so construction of longitudinal slot 88 is so that can accommodate The thickening part 89 of shot sleeve 14.Since slot 50 and protruding portion 90 are medially arranged in radial directions about longitudinal central axis line 6 Between shot sleeve 14 and housing component 3, so obtaining the outer diameter of the very little of entire component.

Drivening piece 16 is shown in more detail in Figure 16 to 20.Drivening piece 16 has internal messing portion 57 in the end in its distal side, With 41 collective effect of external toothing portion (Fig. 8) at the adapter tube 40 of operation button 8.Adjacent to internal messing portion 57 in interior engaging section 57 Nearside side at be disposed with recess portion 58.If mobile relative to drivening piece 16 on the direction of operation button 8 proximally, grasp Make the external toothing portion 41 of button 8 from the region that the region in the internal messing portion 57 of drivening piece 16 reaches recess portion 58, thus unclamps Antitorque connection between operation button 8 and drivening piece 16.Internal messing portion 57 and recessed is illustrated in further detail in figs. 18 and 19 The design scheme in portion 58.

Drivening piece 16 has edge 106, the slot 59 being limited at the side of nearside.As Fig. 2 is shown, edge 106 limitation drivening pieces 16 are inserted into the depth in dosage mechanism 15.The structure at the section that it is connected at edge 106 of drivening piece 16 Cause sleeve-shaped and have at its periphery to be evenly distributed in four longitudinal slots 60 periphery at, and also such as Figure 20 show that Sample has trapezoidal cross section.Such as the display of Figure 22 and 23, dosage mechanism 15 has to be projected radially inward accordingly Longitudinal bridge part 68.Longitudinal bridge part 68 reaches in longitudinal slot 60 and therefore drivening piece 16 is made torsionally to be connected with dosage mechanism 15 It connects.

The design scheme of dosage mechanism 15 is shown in more detail in Figure 21 to 23.Dosage mechanism 15 is configured to sleeve-shaped and outside it Place is enclosed with the coefficient external screw thread 62 in internal screw thread channel 55 with shot sleeve 14.Scale is printed in dosage mechanism 15 61, value rises from the end in end towards the distal side of the nearside of dosage mechanism 15.Scale 61 is schematically showed in Figure 21, Wherein, even number is only shown.Odd number can illustrate advantageous by lines between numbers.Lines are in the diagram in Figure 21 Do not show.In the present embodiment, every circle of dosage mechanism 15 is provided with 20 setting positions.It is set by operation button 8 Dosage is bigger, and shot sleeve 14 is relative to dosage mechanism 15 towards farr mobile on the direction in distal side.When moving, shot sleeve 14 window portion 31 equally moves, to increase corresponding to the shown number of the scale 61 of the set amount of injecting fluid. Covering part 56 covers the value of scale 61 not being arranged in window portion 31, to avoid showing scale in the form 7 of shell 2 61 several values.

Dosage mechanism 15 has detent profile 63 in the end of its nearside, is a part of the second buckling and locking device 30 (Fig. 2).In addition, dosage mechanism 15 has radially four clamping lock hooks 64 outstanding in the end of its nearside, for branch It a part of bearing portion 32 and is stuck in after the click-lock edge 85 of housing component 3 shown in Figure 35.Thus dosage mechanism 15 is existed It is fixed on axial direction at housing component 3.In addition, dosage mechanism 15 has columnar internal adapter tube in the end of its nearside 65, with internal screw thread 66.76 collective effect of external screw thread of internal screw thread 66 and dosing piston 103 shown in Figure 28 and and its It is formed together the second threaded joints 34.As Figure 22 is also shown, dosage mechanism 15 has inwardly projecting clamping lock hook 67, Its set overlapping piece 18 for being used to be axially fixed to show in Figure 24.For this purpose, clamping lock hook 67 is stuck in showing in Figure 24 for set overlapping piece 18 In the slot 69 shown.

Set overlapping piece 18 is shown in more detail in Figure 24 to 27.The embolism 70 that overlapping piece 18 has nearside is covered, with square Opening 71.Covering overlapping piece 18 has annulus 72 in the end in its distal side.There are two extending between embolism 70 and annulus 72 Bridge part 73 is guided, the surface construction of facing each other is guide surface 74.In the side of guidance bridge part 73 being radially outwardly directed The reinforcing bridge part 75 stretched in a longitudinal direction is accordingly installed at portion.As Figure 27 is shown, guidance bridge part 73 exists It is configured at its outer rim oblique.Receiving portion 104 is configured in annulus 72.

The design scheme of dosing piston 103 is shown in more detail in Figure 28 to 30.Dosing piston 103 is at it back to piston disc 20 Distal side end have guiding segments 77.As Figure 30 is shown, guiding segments 77 have the (especially square of rectangle ) section.Two the first guide surfaces 78 disposed opposing each other, the boot bridge of operation button 8 are configured at guiding segments 77 The guide surface 37 of socket part 36 can stick at the first guide surface 78.Two guide surfaces 79 of others disposed opposing each other stick on At the guide surface 74 for covering overlapping piece 18.The so construction of receiving portion 104 in set overlapping piece 18 is so that guiding segments 77 and behaviour can be inserted through Make the guidance bridge part 36 of button 8 being arranged at guide surface 78.The group of syringe 1 after injection shown in Fig. 2 In part, shot sleeve 14 is arranged in the position of its nearside.In this position, the guide portion 17 of operation button 8 extends through receiving portion 104.If setting maximum dosage, as Fig. 4 is shown, then guide portion 17 has spacing relative to piston rod 19.Spacing It is bridged by set overlapping piece 18, is not only torsionally connected with the guiding segments 77 of dosing piston 103 but also with guide portion 17.Thus 17 opposed formations of guide portion at operation button 8 can be obtained it is very short, to (be completed in the state shown in fig 1 and 2 After injection) obtain syringe 1 very little length.

The design scheme of housing component 3 is shown in more detail in Figure 31 to 37.Such as the display of Figure 33 and 37, housing component 3 has Wall 83 is transversely to the machine direction central axes 6 and has opening 87.Opening 87 is dashed forward by being molded on wall 83, direction towards distal side Inner sleeve 86 out limits.The adapter tube 65 of the nearside of dosage mechanism 15 is stretched in inner sleeve 86.The radially cloth except inner sleeve 86 It is equipped with sleeve segment 84, is carried towards click-lock edge 85 outstanding on the direction in distal side, the clamping lock hook 64 of dosage mechanism 15 is hooked in At click-lock edge 85.

Show in Figure 34 two latch arms 80 are molded in adjacent to wall 83 (at the side in the distal side of wall 83) At housing component 3.Latch arm 80 is by keeping bridge part 82 to be maintained at housing component 3 and having lock part 81 in its free end. Lock part 81 is approximate in this embodiment to be arranged and snaps into the detent profile 63 at dosage mechanism 15 disposed opposing each otherly. Lock part 81 and detent profile 63 are formed together the second buckling and locking device 30.

Figure 38 and Figure 39 shows the section by operation button 8.It is shown in Figure 38 at operation button 8 in injection position It sets in 100, and is in the locked position in 101 in Figure 39.The agent of the permission of injecting fluid is set in injection position 100 Amount, the amount set in Figure 39 without allowing injecting fluid.The amount of the permission of injecting fluid is the amount subscribed in design, Corresponding to the desired dosage for the drug given using syringe.Allow several amounts herein, such as single dose Mostly by dosage.The amount of injecting fluid not allowed is such amount, that is, the amount that should not be given, for example, because the validity of drug Only confirm be for allow amount injecting fluid, or because should be avoided by patient automatically setting dosage and should be avoided to Give the drug of the amount not accurately illustrated.

As Figure 38 is shown, the detent profile 47 at shot sleeve 14 has protrusion 93 and clamping lock recess 94. The lock part 46 of latch piece 12 is accordingly arranged in clamping lock recess 94.Therefore lock part 46 is swung radially inward.Latch arm 45 It is overlapped relative to annulus 107 not shown in Figure 38.Figure 38 also shows that the external toothing portion 41 of operation button 8 is arranged in band In the internal messing portion 57 of moving part 16.In Figure 38, external toothing portion 41 and internal messing portion 57 are arranged in identical height, but are arranged Under section.Antitorque connection is established between drivening piece 16 and operation button 8 by external toothing portion 41 and internal messing portion 57.

The injection position 100 that operation button 8 can be shown from Figure 38 towards the arrow 28 shown in Fig. 4 side up towards It is pressed on the direction of nearside in the second position 96 of the nearside shown in Figure 40 and 41.Thus the clamping lock of lock part 46 is had Part 12 reaches in the second section 39 shown in Fig. 6 and Figure 41, and the section 38 than showing in Figure 38 has smaller Diameter b.The foot in the case where lock part 46 is arranged in clamping lock recess 94 in the outer diameter in the region of latch arm 45 of latch piece 12 It is enough small, it is moved on the direction of operation button 8 proximally so as to make and causes to inject.Second of the latch arm in operation button 8 Setting in 96 no longer can radially deviate, because of the cylindrical outer wall retardation motion of the second section 39.Thus make operation button 8 logical Latch piece 12 is crossed torsionally to be connected with shot sleeve.It is closed by the second attachment 24 that latch piece 12 is formed.It is pressed that will operate When button is pressed into its second position 96, the side of external toothing portion 41 proximally at operation button 8 moves upwards and from drive The region in the internal messing portion 57 of part 16 reaches in the region of recess portion 58.Therefore the first attachment 2 is opened and drivening piece can be opposite It is rotated in operation button 8.

Figure 39 shows that operation button 8 is in the locked position in 101.In this position, lock part 46 is in shot sleeve In the region of the protrusion 93 of 14 detent profile 47.Therefore latch arm 45 radially deviates.In the second section 39 Internal diameter is shown in Figure 39 with dotted line.As shown, dotted line intersects with latch arm 45.Therefore the side of operation button 8 proximally Upward movement can not be realized.The locking profile 102 shown in Fig. 6 sticks at latch arm 45 and therefore prevents operation button Movement on 8 direction proximally.Thus it can not be realized in the latched position 101 of operation button 8 and cause injection or injection Extrusion of the body from container 5.

As shown, latch arm 45 is designed very narrow.Therefore the power inwardly applied in radial directions by latch arm 45 It is very small.The power for being applied to detent profile 47 by latch arm 45 is too small, so that operation button 8 turns in injection position 100. Thus can in shown syringe 1 setting operation button latched position 101.Locking profile 102 is prevented in operation button 8 Latched position 101 in can from container 5 extrude injecting fluid.

Figure 42 and 43 shows the section corresponding to Figure 38 by embodiment.In Figure 42, the setting of detent profile 98 is being infused It penetrates at sleeve 14, with clamping lock recess 94, is formed between its protrusion 108.In this embodiment, protrusion 108 is corresponding Extend through about 18 ° of circumferential angle.The outer diameter of shot sleeve 14 is constant at protrusion 108.In the region of protrusion 108 In, latch arm 45 can not inside springing.Equally, power can not be applied in this region by card by latch arm 45 in circumferential direction On lockwheel exterior feature 98.For the design scheme of detent profile 98 shown in Figure 42, even if firmly designing very much latch arm In the case where 45, operation button 8 can be still adjusted in multiple latched positions 101.For the embodiment shown in Figure 42, always It counts and ten latched positions can be achieved, and be provided in the embodiment according to Figure 38 to 41 at peripheral place and amount to 20 positions.

Detent profile 99 is shown in the embodiment shown in Figure 43, is only provided with two injection positions wherein.? Accordingly there is 180 ° of angle, the i.e. rotation of the half of operation button 8 between injection position.In order to also be reached between injection position To latched position, accordingly adjoining arrangement, there are six clamping lock recesses 94, are extended with protrusion 110 in-between.Protrusion 110 extends Pass through different circumferential angles.However, may also be arranged to protrusion 110 extends through identical circumferential angle.Protrusion 110 and clamping lock The arrangement of recess 94 so selects, that is, only (i.e. in shown position and turns in two positions of operation button 8 In dynamic 180 ° of position), all lock parts 46 are arranged in clamping lock recess 94.In other all positions, at least one Lock part 46 is radially deviated from protrusion 110, so that the side of operation button 8 proximally is moved upwards up in Figure 40 It can not be realized in the second position 96 of middle display.In addition, clamping lock recess 94 is so arranged, that is, rotated every time in operation button 8 At 18 °, at least one lock part 46 is stuck in clamping lock recess 94, to obtain 20 appreciable latched positions.In Figure 43 In the injection position 100 of middle display, operation button 8 can be carried out in the axial direction relative to drivening piece 16 and shot sleeve 14 Adjustment, that is, the first position 95 in the distal side shown from Fig. 1 is adjusted to the second position 96 of the nearside shown in Figure 40 In.Section 43 is kept to be sticked at the convex shoulder 97 of shot sleeve 14 in the position of nearside 96.

The arrangement of clamping lock recess and protrusion can arbitrarily match with corresponding applicable cases.It may also be arranged to Latched position and unique appreciable clamping lock are not provided between injection position 100 since the second buckling and locking device 30 is generated in dosage Between mechanism 15 and housing component 3.

Claims

1. a kind of syringe, has: shell (2) is wherein being configured with the receiving portion for the container (5) with injecting fluid； Operation button (8), can be rotated with for set injecting fluid can from the container (5) extrude amount and rotation when in institute State the longitudinal central axis line (6) of syringe (1) side up towards on the direction in the distal side of the syringe (1) relative to the shell (2) it moves, wherein in order to extrude injecting fluid, side of the operation button (8) in longitudinal central axis line (6) from the container (5) Up towards being moved on the direction of the nearside of the syringe (1), wherein the syringe (1) has shot sleeve (14), resist It turns round ground and is connected with the shell (2) with can axially move, wherein the shot sleeve (14) is threadedly coupled by first Portion (33) is connected with dosage mechanism (15), and wherein, and the dosage mechanism (15) is supported to relative to the shell (2) can Rotation and along axial irremovable, and wherein, the syringe (1) has dosing piston (103), torsionally with the behaviour Make button (8) to be connected and be connected by the second threaded joints (34) with the dosage mechanism (15), wherein in the appearance It is disposed in the inside of device (5) plug (21), the dosing piston (103) sticks at plug (21), wherein the dosage is living Plug (103) have stick on piston disc (20) at the plug (21) and with the piston disc (20) rotationally phase The piston rod (19) of connection,

It is characterized in that, the piston rod (19) is by covering overlapping piece (18) torsionally guide portion with the operation button (8) (17) be connected, wherein the set overlapping piece (18) not only with the guiding segments (77) of the dosing piston (103) and also with it is described The guide portion (17) of operation button (8) is torsionally connected, wherein if setting maximum dosage, the operation button (8) Guide portion (17) there is spacing relative to the piston rod (19), and wherein, which is bridged by the set overlapping piece (18).

2. syringe according to claim 1, which is characterized in that the dosing piston (103) has guiding segments (77), Wherein, operation button (8) tool is there are two bridge part (36) are guided, the two guidance bridge part (36) are in side that is opposite and setting It is sticked at portion at the first guide surface (78) of the guiding segments (77).

3. syringe according to claim 2, which is characterized in that the guiding segments (77) have the section of rectangle, and And the guiding segments (77) have the other guide surfaces (79) of disposed opposing each other two, stick on the set overlapping piece (18) at guide surface (74).

4. syringe according to claim 2 or 3, which is characterized in that end of the set overlapping piece (18) in its distal side With annulus (72), receiving portion (104) are configured in annulus (72), wherein described accommodation section (104) so construct, That is, can be by the boot bridge of the guiding segments (77) and the operation button (8) being arranged at first guide surface (78) Socket part (36) is inserted through described accommodation section (104).

5. syringe according to claim 1, which is characterized in that the operation button (8) can be in setting injecting fluid It adjusts, is infusing at least one injection position (100) and at least one latched position (101) in the case where the amount that can be extruded Penetrate the amount of the permission of setting injecting fluid in position (100), and setting injecting fluid does not allow in latched position (101) Amount, wherein the operation button (8) can direction in injection position (100) on the direction of longitudinal central axis line (6) proximally Upper movement, and wherein, in the latched position (101) of the operation button (8), the operation button (8) is in longitudinal central axis The movement on direction on the direction of line (6) proximally is locked.

6. syringe according to claim 5, which is characterized in that the syringe (1) has the first buckling and locking device (29), It limits at least one injection position (100).

7. syringe according to claim 6, which is characterized in that first buckling and locking device (29) is at least one card Element is locked, with detent profile (47) collective effect, wherein the latch elements are caught in the card in injection position (100) It is deviated in the clamping lock recess (94) of lockwheel exterior feature (47) and from the detent profile (47) in latched position (101), wherein described Syringe (1) has locking profile (102), with the latch elements collective effect of offset and in the operation button (8) Latched position (101) in the locking operation button (8) relative to the movement on the shell (2) direction proximally.

8. syringe according to claim 7, which is characterized in that locking profile (102) construction is pressed in the operation At button (8).

9. syringe according to claim 7, which is characterized in that the operation button (8) can be relative to the clamping lock member Part adjusts between the first position (95) in distal side and the second position (96) of nearside, wherein the latch elements are described It is arranged in axial the first section (38) of the operation button (8), allows in the first position (95) of operation button (8) The offset of the latch elements, and wherein, the latch elements are arranged in the second axial section in the second position (96) (39) in, the offset of the latch elements is locked.

10. syringe according to claim 9, which is characterized in that the latch elements can about longitudinal central axis line (6) to Outer offset, and the operation button (8) has the second internal diameter (b) being greater than in the second section (39) in the first section (38) The first internal diameter (a).

11. syringe according to claim 9, which is characterized in that first position of the operation button (8) towards its distal side Direction on be loaded elastic force.

12. syringe according to claim 1, which is characterized in that the syringe has the first attachment (23), It is established between the operation button (8) and the dosage mechanism (15) in the first position (95) of the operation button (8) anti- The connection of torsion.

13. syringe according to claim 12, which is characterized in that between operation button (8) and dosage mechanism (15) Antitorque connection realized by drivening piece (16), be torsionally connected and be axially fixed with the dosage mechanism (15) Ground and rotationally it is connected with the shot sleeve (14).

14. syringe according to claim 1, which is characterized in that the operation button (8) is in its second position (96) Torsionally it is connected with the shot sleeve (14) by the second attachment (24).

15. syringe according to claim 6, which is characterized in that the operation button (8) is in its second position (96) Torsionally it is connected with the shot sleeve (14) by the second attachment (24), wherein the card of first buckling and locking device (29) A part that element is second attachment (24) is locked, and detent profile (47) construction of first buckling and locking device (29) exists At the shot sleeve (14).

16. syringe according to claim 1, which is characterized in that the second buckling and locking device (30) is in the dosage mechanism (15) it works between the shell (2).

17. syringe according to claim 16, which is characterized in that second buckling and locking device (30), which has, is arranged in institute At least one latch arm (80) at shell (2) is stated, with the detent profile (63) at the periphery of the dosage mechanism (15) Collective effect.