DE202007008068U1 - injection device - Google Patents

Abstract

injection device for recording and operation a syringe with an injection needle, and with components, through whose relative movement causes the expiration of the injection of the active ingredient What is in a case (101) a receptacle (103) is held, into which the syringe (111) can be inserted and fixed, the receptacle (103) by means of a carriage (108) is displaceable, in the receptacle (103) a plunger (104) is slidably held, the / the piston (111, 111A, 111B) the syringe is applied, and wherein for performing Einstechhub, injection stroke and return stroke a pull cable (114) is provided, which is connected to the carriage (108) stored roller (109) is deflected, and whose one end with the receptacle (103) and the other end with a tension spring (110) connected to the housing (101) is held, with automatic and / or manually operable Facilities between housing (101), picture (103), pestle (104) and slide (108) whose mutual coupling with the Pull rope (114) and thus the sequence of Einstechhub, injection stroke ...

Description

Technical background

to Treatment of a variety of diseases that have become widespread have, such as Diabetes, the patient must be self-reliant the needed Amount of an active substance / drug by means of a syringe or inject a carpule. To make this safer and easier, are known a variety of injection devices, the one largely automatic process of piercing the needle, injecting of the active ingredient and retrieve include the needle.

State of the art

For use of disposable syringes, several devices are known for automatically injecting the drug contained in the syringe; this is how the genre-building shows WO 2007/033638 an injection device that allows a simple operation of a fully automatic sequence of operations described above when using a two-chamber ampoule, with the help of a sequence of mixing, puncturing and injecting is enabled.

Presentation of the invention

It The object of the invention is to develop an injection device in such a way that with simple mechanical design of the handling comfort and the security for increased the patient becomes.

The Injection device according to the invention solves these Task with the features of claim 1.

Of the fundamental idea of the invention is to be seen in that now no longer the hitherto seamless sequence of strokes with fixed respective stroke duration is given, but the user an individual design the duration of a stroke (and therefore the speed of the assigned operation such as. the injection) and also the transition of individual strokes (and so that in particular pauses in the movement) is made possible.

preferred Embodiment relate to the interpretation of the component elements for adjustment of residence time and duration of injection.

Brief description of the drawings

Two embodiments the injection device will now be explained in more detail with reference to drawings. It demonstrate:

1A FIG. 2: a side view of a first exemplary embodiment of the injection device with the housing cover removed; FIG.

1B : a section through the injection device of the 1 in their basic position in their middle plane,

2A FIG. 2: a side view of the injection device during the execution of the mixing stroke, FIG.

2 B : a sectional view accordingly 2A .

3A FIG. 2: a side view of the injection device during the insertion stroke, FIG.

3B : a sectional view according to 3A .

4A FIG. 2: a side view of the injection device during the injection stroke, FIG.

4B : a sectional view according to 4A .

5A FIG. 2: a side view of a first exemplary embodiment of the injection device during idle stroke, FIG.

5B : a sectional view accordingly 5A .

6A FIG. 2: a side view of a first exemplary embodiment of the injection device during needle retraction, FIG.

6B : a sectional view accordingly 6A .

7A FIG. 2: a side view of the first exemplary embodiment of the injection device after completion of the needle retraction, FIG.

7B : a sectional view accordingly 7A .

8A FIG. 2: a side view of a first embodiment of the injection device when resetting the mechanism (maximum residence time), FIG.

8B : a sectional view accordingly 8A .

9A FIG. 2: a side view of a first exemplary embodiment of the injection device when resetting the mechanism (minimum residence time), FIG.

9B : a sectional view accordingly 9A .

10A FIG. 2: a side view of a second embodiment of the injection device with the housing cover removed, FIG.

10B : a section through the injection device of the 1 in its basic position in its median plane 1,

11A FIG. 2: a side view of a second exemplary embodiment of the injection device during the puncture stroke, FIG.

11B : a sectional view accordingly 11A .

12A FIG. 2: a side view of a second exemplary embodiment of the injection device during the injection stroke, FIG.

12B : a sectional view accordingly 12A .

13A FIG. 2: a side view of a second exemplary embodiment of the injection device during the idle stroke, FIG.

13B : a sectional view accordingly 13A .

14A FIG. 2: a side view of the second embodiment of the injection device during needle retraction, FIG.

14B : a sectional view accordingly 14A .

15A FIG. 2: a side view of the second embodiment of the injection device after completion of the needle retraction, FIG.

15B : a sectional view accordingly 15A .

16A FIG. 2: a side view of the second exemplary embodiment of the injection device when resetting the mechanism of maximum residence time, FIG.

16B : a sectional view accordingly 16A .

17A FIG. 2: a side view of the second exemplary embodiment of the injection device when resetting the mechanism of minimum residence time, FIG.

17B : a sectional view accordingly 17A .

18A FIG. 2 is a side view of a first embodiment of a planetary gear with a rotary damper. FIG.

18B : a sectional view accordingly 18A .

18C : a view of the planetary gear without planet carrier,

18D : a perspective view accordingly 18A with locked planet carrier,

18E : a perspective view accordingly 18C without planet carrier,

18F : a view accordingly 18D with locked planet carrier,

19A FIG. 2 is a side view of a second embodiment of a planetary gear with two rotary attenuators. FIG.

19B a side view and a perspective view after 19A with locked first locking disc,

19C a side view and a perspective view accordingly 19B with locked second locking disc,

19D : a perspective view after 19B with locked first locking disc,

19E : a perspective view after 19D without planet carrier / second locking disc,

19F : a cut in the plane BB the 19A .

19G : a first cut in the plane AA the 19A , and

19H : a second cut in the plane AA the 19A ,

Description of the first embodiment

For injection of the drug is a two-chamber ampule 111 used. Such ampoule ( 1B ) has two pistons 111A . 111B , this results in two initially independent chambers 111C . 111D , In the first, inner chamber 111C that of the cannula 112 For example, Betaferon in powder form becomes the second, outer chamber 111D filled in a NaCl solution.

Will now be a plunger 104 against the outer piston 111B pressed, initially shifts the inner piston 111A because the NaCl solution hydraulically applies the force of the ram to the inner piston 111A transfers. As soon as the inner piston 111A an overflow channel 111E in the form of a groove-shaped bulge in the shell of the ampoule 111 has overflowed, this stops and the NaCl solution flows through this overflow 111E into the inner chamber 111C and mixes with the Betaferon. After mixing, the injection then takes place (after the puncture stroke) by advancing the ram 104 ,

1A shows a supervision, 1B a section in the starting position of the injection device.

All components are housed in a housing 101 , which consists of two trough-shaped half-shells. The movement components are in this case held displaceably in the injection device parallel to the longitudinal axis of the needle. The components are assigned to each other as follows:
The two-chamber ampoule 111 is in a recording 103 held. A pestle 104 , at the rear end of a control lever 105 is hinged, is on a latching hook 102A a spring-loaded first button 102 held. The recording 103 is on a latching hook 116A a spring-loaded second button 116 held.

On the recording 103 acts the end of a pull rope 114 which is about one in a sled 108 stored roll 109 is deflected, and with a tension spring 110 connected to the housing 101 is attached. The tension spring 110 thus exerts a pull on the recording 103 in the opposite direction to the puncture site. The recording 103 However, it can not move axially, as it is from the latching hook 116A at the second button 116 is held.

By the deflection of the pull rope 114 about the role 109 a force arises on the sledge 108 in the direction of the puncture site. The sled 108 However, he stays in his position because he has one in the sled 108 slidably mounted perpendicular to the direction of injection of a driver spring 119 acted upon driver 118 at the pestle 104 abuts and the plunger 104 from the latching hook 102A at the first button 102 is held.

The control lever 105 is a first adjusting slide 107 assigned, in which a second adjusting slide 106 is slidably mounted. The adjusting slide 106 serves to decouple the carriage 108 from the pestle 104 , The adjusting slide 106 . 107 are designed as displaceably mounted stop elements for setting the plunge depth and injection volume, as will be explained below.

A retreat grip 117 that with a drawbar 115 is connected, serves to produce this starting position. The drawbar 115 is due to a return spring 120 applied.

Will be the first button 102 pressed, comes the latching hook 102A out of engagement, the plunger 104 is released and moves toward the puncture site until the leading edge of the control lever 105 at the reception 103 is applied. In this way, the outer piston 111B the ampoule 111 charged, moves forward and performs a mixing stroke H0. This mixing stroke serves to mix the NaCl solution with the Betaferon as described above ( 2A . 2 B ). Through a window in the housing 101 the mixing of the betaferon with the NaCl solution can be controlled.

Because the free end of the control lever 105 on the other hand on the second adjusting slide 107 slides and rests there, he can not escape at this point by pivoting down; Thus, the tensile force of the tension spring 110 towards the puncture site of the slide 108 over the plunger 104 on the recording 103 transfer. The recording 103 However, it remains in its position as it is from the latching hook 116A the button 116 is locked.

Will now be the second button 116 pressed, comes the latching hook 116A disengaged and the recording 103 will be released; as a result, the plunger move 104 and the recording 103 under the action of the tension spring 110 together towards the injection site. The needle is inserted ( 3A . 3B ), the plunge stroke H1 is performed.

Once the desired puncture depth has been reached, the control lever can 105 swivel down (arrow in 4A ), because he no longer through the first adjustment slide 107 because of its recessed surface is prevented from doing so. There is thus no power transmission from the plunger 104 on the recording 103 , the recording 103 remains in its position, only the plunger 104 moves further to the injection site, ie the injection of the drug takes place, the injection stroke H2 is performed.

Achieved in the sled 108 slidably mounted driver 118 the ramp 106A of the second adjusting slide 106 ( 4B ), becomes the driver 118 pulled down and thus the slide 108 from the pestle 104 decoupled, ie at this time the injection is terminated ( 5B ).

In the 5 is a rack 140 , which by means of a first adjusting screw 130 is freely slidably mounted in the housing between a front and a rear end position by the user, shown in its front end position in which the maximum dwell time (maximum duration of the idle stroke HX) is set.

When the injection is finished, the rack hits 140 on the second adjusting slide 106 , the sled 108 moves together with one with the sled 108 connected attenuator 150 continue in the direction of the piercing point relative to the rack 140 , whereby the idle stroke HX arises while the needle remains in the puncture site. Due to the relative movement between the rack 140 and attenuator 150 during the idle stroke HX is the attenuator 150 effective. Meets the sled 108 on the second adjusting slide 106 , the empty stroke HX is finished.

Is the rack 140 not in its front end position, it hits the second adjusting slide at a later time 106 , and thus the time in which the attenuator is 150 is effective, smaller and thus also the residence time (duration of the idle stroke HX).

When the dwell time is set to the minimum value, the rack hits 140 only after completion of the idle stroke HX on the slide 108 and is opposite the sled 108 or the attenuator 150 not moved, the rack 140 thus does not affect the residence time (ineffective).

The sled 108 now stands on the second adjusting slide 106 at. Because the second adjusting slide 106 over the first adjusting slide 107 positively on the housing 101 is held, now affects the tensile force of the tension spring 110 (on the case 101 attached) over the roller 109 on the recording 103 , which is thereby retracted and thus pulls the needle from the puncture site ( 6A . 6B ), the return stroke H3 is performed.

By folding down the retracting handle 117 that with the drawbar 115 connected, and pulling out the pull rod 115 become sledges 108 and all other elements back to the starting position ( 8A . 8B ) withdrawn.

Upon retraction of the carriage / damper in the starting position, the rack hits 140 on the frontal first stop surface 130A the adjusting screw 130 , While the sled 108 with the attenuator 150 moving further away from the puncture site becomes the rack 140 through the adjusting screw 130 held in position, ie the rack 140 moves relative to the carriage 108 / Attenuator 150 in the set starting position.

Through the adjusting screw 130 can the location of the area 130A be changed and thus the track, which is the rack 140 relative to the sled 108 / Attenuator 150 shifts, be set.

In 8A / 8B is the adjusting screw 130 shown in the position that gives the maximum dwell time. In 9A / 9B is the adjusting screw 130 represented in the position that gives the minimum residence time. Between these two positions, the residence time can be adjusted continuously.

After this the mechanics is brought back into the starting position, the Carpule can now be removed.

The injection volume and penetration depth can be set as follows: The first adjustment slide 107 is in the case 101 mounted axially displaceable, he has in this example 2 locking positions (10 and 12 mm, in the example set to 10 mm). These locking positions are assigned to the plunge stroke H1, since the axial position of the adjusting slide 107 determined the way until the control lever 105 the plunger 104 from the recording 103 decoupled ( 2A ).

In the first adjusting slide 107 is the second adjusting slide 106 likewise axially displaceable with latching positions in the example 4 (1.0, 0.75, 0.5, 0.25, in the example set to 1.0). These locking positions are assigned to the injection stroke H2, since the axial position of the adjusting slide 106 the way determined until the plunger 104 from the sledge 108 is decoupled ( 5A . 5B ) and the needle retraction occurs.

Should now z. B. a puncture depth of 12 mm must be compared to the illustrated state of the first adjusting slide 107 by 2 mm in the direction of the piercing point in the new locking position on the housing 101 be moved. Because the second adjusting slide 106 with the first adjusting slide 107 is locked in position 1.0, this also shifts by 2 mm to the piercing point, ie, the setting of another puncture depth does not affect the setting of the injection volume. Likewise, the setting of the injection volume does not affect puncture depth; the settings of plunge stroke H1 and injection stroke H2 are independent of each other.

This in 10 - 17 illustrated second embodiment is based on an injection device, as described in the first embodiment, but not for the use of a carpule, but a syringe, ie the mixing stroke is eliminated. The basic idea of this embodiment is that the injection time and / or the residence time can be set by the patient.

Structure and interaction of the components explained in the first embodiment are functionally identical, so that in the following be only the additional components based on their functions to be written:

Setting the duration of the injection stroke:

Will be the first button 202 pressed, comes the latching hook 202A disengaged and the recording 203 will be released; as a result, the plunger move 204 and the recording 203 under the action of the tension spring 210 together in the direction of the pier. The needle is inserted ( 11A and 11B ), the plunge stroke is executed.

With the completion of Einstechhubes a lock 221 which has a slot in a guide 222 a force in the direction of the recording (triggered by a spring 223 ) experiences, in the recess of the recording 203 swing. The lock is stored in the first adjusting slide 207 and is thus independent of the set plunge depth. The recording 203 is about the lock 221 fixed in the inserted position.

Once the desired puncture depth has been reached, the control lever can 205 swivel down (arrow in 12A ), because he no longer through the first adjustment slide 207 because of its zurückspringener surface is prevented from it.

There is thus no more power transmission to the plunger 204 ,

In 11A the state of the injection device is shown at maximum injection time, ie a rack 241 hits a stop at the same time as the end of the puncture stroke 206B of the second adjusting slide 206 ,

If the injection time is set to a smaller value, the rack hits 241 at a later date on the attack 206A ,

After the plunger 204 from the recording 203 is decoupled, the recording remains 203 in their position and the plunger 204 continues to move in the direction of the pier. From the moment in which the rack 241 on the stop 206B of the second adjusting slide 206 meets, this remains relative to the plunger 204 in a damper 251 stand. The result is a relative movement between the rack 241 and dampers 251 , and thus the injection stroke through the rotary damper 251 braked. The injection time is thus dependent on the distance that the damper is effective, and this distance can be adjusted via an adjusting screw 231 from the patient. The injection of the drug takes place, the injection stroke is carried out.

Achieved in the sled 208 slidably mounted driver 218 the ramp 206A of the adjusting slide 206 ( 12b ), becomes the driver 218 pulled down and thus the slide 208 from the pestle 204 decoupled, ie at this time the injection is completed. ( 13b ).

Setting the residence time:

In the 13B is a first rack 230 shown in its foremost position, ie it is set the maximum residence time. When the injection is finished, a second rack hits 240 on the second adjusting slide 206 , the sled 208 moves together with a damper 250 continue in the direction of the piercing point relative to the rack 240 , Due to the relative movement between the rack 230 and dampers 240 during the idle stroke, the damper is effective. Meets the sled 208 on the second adjusting slide 206 , the idle stroke is finished.

Is the rack 230 not in the foremost position (smaller dwell time), it hits the second shifter at a later time 206 and thus the distance in which the damper is effective, smaller and thus the residence time.

When the dwell time is set to the minimum value, the rack hits 230 only after completion of the idle stroke on the slide 208 and is opposite the sled 208 or the damper is not moved, the rack does not affect the residence time (ineffective).

At the end of the idle stroke, the slope of the carriage hits 208 on a ramp 222A a guide 222 and releases the lock between recording 203 and adjusting slide 206 ( 14A ).

The sled 208 now stands on the second adjusting slide 206 at. Because the second adjusting slide 206 over the first adjusting slide 207 positively on the housing 201 held, now affects the tension spring 210 (on the case 201 attached) over the roller 209 on the recording 203 , which is thereby retracted and thus pulls the needle from the puncture site ( 15A . 15B ), the return stroke H3 is carried out.

By folding down the return access 217 that with the drawbar 215 connected, and pulling out the pull rod 215 , are sledges 208 and all other elements are returned to their original position ( 16A . 16B ).

When retracting the carriage 208 / Attenuator 250 or pestle 204 / Attenuator 251 in the starting position, the rack hits 240 on the surface 230A the adjusting screw 230 or the rack 251 on the surface 231A the adjusting screw 231 , While sledges 208 / Attenuator 250 or pestle 204 / Dämp fung Member 251 moving further away from the puncture site becomes the rack 240 through the adjusting screw 230 or the rack 241 through the adjusting screw 231 held in position, ie the racks 240 / 241 move relative to the attenuators 250 / 251 in the set starting position.

Through the adjusting screws 230 / 231 can the location of the stop surfaces 230A and 231A to be changed. The routes that are the racks 240 / 241 relative to the attenuators 250 / 251 can be adjusted by the patient.

In 16A / 16B are the adjusting screws 230 and 231 shown in the position that leads to the maximum residence time / injection time.

In 17A / 17B are the adjusting screws 230 and 231 represented in the position that gives the minimum residence time / injection time. The dwell time (duration of the idle stroke HX) and the injection time (duration of the injection stroke H2) can be adjusted independently of one another between these two positions.

After this the mechanics is brought back into the starting position, the Carpule can now be removed.

at the described embodiments it is to set the duration of the injection stroke by appropriate Design of the attenuator thus possible for the user by means of displacement of the associated rack, the duration of action of the attenuator within a stroke, so that part of the hub is unattenuated, the remaining part steamed expires.

alternative can also be a dam member Use find its damping characteristic of User is adjustable to vary the stroke duration.

Also Combinations of such measures for Generation of a desired Run-off characteristics (velocity profile) of a stroke are possible.

To implement these alternatives to the user-defined setting of speed / duration of a stroke, for example, the injection stroke, in the described embodiments, a rotary attenuator can be used, as for example. In the DE 20 2006 017 578.3 U1 is described.

In the 18 and 19 two embodiments of an attenuator are shown in which the coupling of the rack is determined as a stroke-determining component with a / two rotary damping member (s) via a planetary gear, which is designed by means of a blocking element as an on / off switch of the rotary damping member. The components are in a housing 311 . 411 stored or held.

That in the 18A - 18F illustrated first embodiment is constructed as follows:
The ring gear 301 and the planetary carrier provided with a circumferential toothing 302 a planetary gear 300 are free running on the wave 303 stored. The sun wheel 305 is stuck with the wave 303 pressed and thus acts as a drive for the shaft 303 composite rotary attenuator 304 ,

• – Der Planetenradträger 302 ist nicht gesperrt (18C, E): Der Sperrschieber 307 sperrt den Planetenradträger 302 nicht. Das Hohlrad 301 dreht sich, wodurch die Planetenräder 310 um das Sonnenrad 305 laufen und somit eine Drehung des Planetenradträgers 302 bewirken. Das Sonnenrad 305 wird somit nicht bewegt, weshalb das Rotationsdämpfungsglied 304 nicht mit der Zahnstange 306 wird. Es erfolgt also ein Leerlauf, d.h., der mit der Zahnstange 306 gekoppelte Hub der Injektionsvorrichtung läuft ungedämpft mit maximaler Geschwindigkeit und somit in kürzester Zeit ab.
• – Der Planetenradträger 302 ist gesperrt (18A, B, D, F): Der Sperrschieber 307 greift in den Planetenradträger 302 ein. Das Hohlrad 301 dreht sich durch die lineare Bewegung der Zahnstange 306. Das Hohlrad 301 treibt die Planetenräder 310 an. Da der Planetenradträger 302 in seiner Stellung fixiert ist, können sich die einzelnen Planetenräder 310 nicht um das Sonnenrad 305 bewegen. Die Planetenräder 310 treiben somit das Sonnenrad 305 an. Da dieses über die Welle 303 mit dem Rotationsdämpfungsglied 304 verbunden ist, wird dieses angetrieben. Es erfolgt also eine Dämpfung, d.h. der mit der Zahnstange 306 gekoppelte Hub der Injektionsvorrichtung verläuft mit geringerer Geschwindigkeit/in längerer Zeitspanne.

The planet carrier 302 is over three axes 309 with the three planet wheels 310 firmly connected. These revolve around the sun wheel 305 about a gearing. About the rack 306 becomes the ring gear 301 driven. A gate valve 307 can be the rotation of the planet carrier 302 prevent it by intervening in its interlocking. Depending on the position of the gate valve 307 the corresponding gears are operated in the following functions:

• - The planet carrier 302 is not locked ( 18C , E): The gate valve 307 locks the planet carrier 302 Not. The ring gear 301 turns, causing the planetary gears 310 around the sun wheel 305 run and thus a rotation of the planet carrier 302 cause. The sun wheel 305 is thus not moved, which is why the rotary attenuator 304 not with the rack 306 becomes. So there is an idle, ie, with the rack 306 Coupled stroke of the injection device runs undamped with maximum speed and thus in the shortest possible time.
• - The planet carrier 302 is locked ( 18A , B, D, F): The gate valve 307 grabs the planet carrier 302 one. The ring gear 301 rotates through the linear movement of the rack 306 , The ring gear 301 drives the planet wheels 310 at. Because the planet carrier 302 fixed in its position, the individual planet gears can 310 not around the sun wheel 305 move. The planet wheels 310 thus drive the sun gear 305 at. Because this over the wave 303 with the rotary attenuator 304 This is powered. So there is a damping, ie with the rack 306 coupled stroke of the injection device runs at a slower speed / in a longer period of time.

• 1) Keiner der beiden Sperrschieber gedrückt → Leerlauf, keine Hubdämpfung,
• 2) nur ein Sperrschieber gedrückt → nur das zugehörige Rotationsdämfungsglied dämpft, Hubdämpfung entsprechend dem gewählten Rotationsdämpfungsglied,
• 3) beide Sperrschieber gedrückt → beide Rotationsdämpfungsglieder dämpfen, maximale Dämpfung des Hubs.

When using two successive set rotary attenuators with different attenuation values, in this way are operated, several combinations are possible:

• 1) Neither of the two gate valves is pressed → Idling, no stroke damping,
• 2) only one gate valve is pressed → only the associated rotational damper dampens, stroke damping corresponding to the selected rotary damper,
• 3) both locking slides pressed → dampen both rotary damping elements, maximum damping of the stroke.

That in the 19A - 19H The second example shown is an extension of the first example and constructed as follows:
There are two waves 403A and 403B intended. The first wave 403A serves as a drive of the first rotary attenuator 404A , On the first wave 403A is a first locking disc 408A firmly arranged eg pressed on. The ring gear 401 turns free-wheeling on the first wave 403A , In addition, the sun gear 405 stuck with the first wave 403A connected. The drive is via the rack 406 which the ring gear 401 drives.

The second time 403B serves as a drive for the second Rotationsdämfungsglied 404B , On the second wave 403B is a second locking disc 408B firmly stored. The second locking disc 408B serves as a planet carrier, because of the three axes 409 the three planet gears 410 Freewheeling are connected. The planet wheels 410 be over the ring gear 401 driven and drive depending on the position of the gate valve 407A . 407B the locking device to the corresponding gears.

• – Die erste Sperrscheibe 408A ist gesperrt (19C): Die Sperreinrichtung sperrt über ihren ersten Sperrschieber 407A die Drehung der ersten Sperrscheibe 408A und damit die Drehung der ersten Welle 403A. Das Hohlrad 401 dreht sich durch die lineare Bewegung der Zahnstange 406 und treibt die Planetenräder 410 an.

This results in the following functions:

• - The first locking disc 408A is locked ( 19C ): The locking device locks over its first gate valve 407A the rotation of the first locking disc 408A and thus the rotation of the first shaft 403A , The ring gear 401 rotates through the linear movement of the rack 406 and drives the planet wheels 410 at.

• – Die zweite Sperrscheibe 408B ist gesperrt (19B, D, E): Die Sperreinrichtung sperrt über ihren zweiten Sperrschieber 407B die Drehung der zweiten Sperrscheibe 408B und damit die Drehung der zweiten Welle 403B. Das Hohlrad 401 dreht sich durch die lineare Bewegung der Zahnstange 406 und treibt die Planetenräder 410 an. Da der Planetenradträger (= zweite Sperrscheibe 408B) in seiner Stellung fixiert ist, können sich die Planetenräder 410 nicht um das Sonnenrad 405 bewegen. Die Planetenräder 410 treiben somit das Sonnenrad 405 an. Da dieses über die erste Welle 403A mit dem ersten Rotationsdämpfungsglied 404A verbunden ist, wird dieses angetrieben. Es erfolgt also eine Dämpfung des Hubs durch das erste Rotationsdämpfungsglied 404A. (Die erste Sperrscheibe 408A dreht sich ohne Wirkung).

Because the first wave 403A can not turn, is the sun gear 405 fixed in his position. The planet wheels 410 can thus be around the sun 405 move and thus drive the planet carrier / second lock washer 408B at. Because these are about the second wave 403B with the second rotary attenuator 404B is connected, the second rotation attenuator 404B driven. Thus, there is an attenuation by the second rotary attenuator 404B , (The second locking disc 408B turns without effect).

• - The second locking disc 408B is locked ( 19B , D, E): The locking device locks on its second locking slide 407B the rotation of the second locking disc 408B and thus the rotation of the second shaft 403B , The ring gear 401 rotates through the linear movement of the rack 406 and drives the planet wheels 410 at. Since the planet carrier (= second locking disc 408B ) is fixed in position, the planetary gears can 410 not around the sun wheel 405 move. The planet wheels 410 thus drive the sun gear 405 at. Because this over the first wave 403A with the first rotary attenuator 404A This is powered. Thus, there is an attenuation of the stroke by the first rotation attenuator 404A , (The first locking disc 408A turns without effect).

The under the 17 and 18 described units with the designation "rack 306 . 406 / Planetary gear 300 . 400 / Rotary attenuator 304 . 404A . 404B '' can at the in the 1 to 16 shown two embodiments of the injection device instead of the assemblies shown there with the designations "rack 140 . 240 . 241 / Attenuator 150 . 250 . 251 '' be used.

By a suitable connection of the locking slide with actuating means outside of the housing can be an attenuator from the user activated or selected For example, to achieve a slower injection stroke.

Of the Patient receives thus another setting option for the individual design of the Flow profiles of the "his" injection device.

101 201

casing

102 202

first button

102A, 202A

latch hook

103 203

admission

104 204

tappet

105 205

control lever

107 207

first Setting slider

106 206

second Setting slider

106A 206A

ramp

206B

attack

108 208

carriage

109 209

role

110 210

feather

111

carpule

211

syringe

112 212

cannula

114 214

rope

115 215

pull bar

116

second button

116A

latch hook

117 217

withdrawal handle

118 218

takeaway

119 219

driver spring

120 220

return spring

221

lock admission

222

Guide locking

222A

ramp

223

feather

130 230

first adjustment

231

second adjustment

130A, 230A

first stop surface

231A

second stop surface

140 240

first rack

241

second rack

150 250

first attenuator

251

second attenuator

300, 400

planetary gear

301 401

ring gear

302 402

planet

303 403A, 403B

wave

304 404A, 404B

Rotary attenuator

305 405

sun

306 406

rack

307 407A, 407B

blocking slide

408A, 408B

lock washers

309 409

axes

310 410

planetary gears

311 411

casing

Claims (12)

Injection device for receiving and actuating a syringe with an injection needle, and with components, by the relative movement of the sequence of the injection of the active ingredient is effected, including in a housing ( 101 ) a recording ( 103 ), into which the syringe ( 111 ) can be inserted and fixed, the receptacle ( 103 ) by means of a carriage ( 108 ) is displaceable, in the receptacle ( 103 ) a pestle ( 104 ), which holds the piston (s) ( 111 ; 111A . 111B ) of the syringe, and wherein for performing Einstechhub, injection stroke and Rückholhub a pull rope ( 114 ) is provided, the one on the carriage ( 108 ) stored roll ( 109 ), and its one end with the recording ( 103 ) and the other end with a tension spring ( 110 ) connected to the housing ( 101 ), wherein automatically and / or manually operable devices between housing ( 101 ), Admission ( 103 ), Plunger ( 104 ) and sledges ( 108 ) whose mutual coupling with the traction cable ( 114 ) And thus control the sequence of insertion stroke, injection stroke and return stroke, characterized in that the means comprise at least one means for user-side adjustment of the flow profile of at least one of the strokes. Injection device according to Claim 1, in which the traction cable ( 114 ) over the carriage ( 108 ) and the role ( 109 ) at the following on the injection stroke return stroke recording ( 103 ) draws with the ampoule and the injection needle from the puncture site, characterized in that with at least a first means the duration of a motion-free state of the syringe between injection stroke and return stroke (Leerhub HX) on the housing ( 101 ) is adjustable, during which the injection needle remains in the puncture site. Injection device according to claim 1, wherein means for coupling the plunger ( 104 ) with the recording ( 103 ) are provided, which the ram ( 104 ) for performing the piercing stroke with the receptacle ( 103 ) and decouple for carrying out the injection stroke, characterized in that with at least one second means the period between the beginning and end of the movement of the plunger ( 104 ) in the recording ( 103 ) and thus the duration of the injection stroke (H2) is adjustable. Injection device according to claim 2 or 3, characterized in that the first and / or second means a displaceably mounted rack ( 140 . 240 . 241 ) includes. Injection device according to claim 2 or 3, characterized in that the first and / or second means comprise at least one attenuator ( 150 . 250 . 251 ), that of an associated rack ( 140 . 240 . 241 ) is operable. Injection device according to claim 4 and 5, characterized in that the duration of action of the attenuator ( 150 . 250 . 251 ) over a portion of the associated hub (HX, H2) by means of actuators ( 130 . 230 . 231 ) is adjustable on the housing, the displacement of the associated rack ( 140 . 240 . 241 ) between two end positions. Injection device according to claim 6, characterized that the attenuator a on the housing adjustable damping characteristic having. Injection device according to claim 5, characterized in that the attenuator is a rotary attenuator ( 304 . 404A . 404B ) with a toothed wheel on its shaft, that of a toothed rack ( 140 . 240 . 241 ) is applied. Injection device according to claim 8, characterized in that that between a rotary damper and a gear is arranged on its rack. Injection device according to claim 9, characterized in that the transmission is a planetary gear ( 300 ), whose sun wheel ( 305 ) fixed to the shaft ( 303 ) of the rotary attenuator ( 304 ) connected to the shaft ( 303 ) freely rotatable ring gear ( 301 ) in which planetary gears ( 310 ) revolve, mesh with the rack, and its on the shaft ( 303 ) freely rotatable planet carrier ( 302 ) in engagement with a user-operable gate valve ( 307 ) is brought, in which this the rotation of the planet carrier ( 302 ) prevented. Injection device according to claim 10, characterized in that two rotational attenuators ( 404A . 404B ) on concentrically mounted shafts ( 403A . 403B ), the first wave ( 403A ) fixed with a first locking disc ( 408A ) and the sun wheel ( 405 ), and the ring gear ( 401 ) on this first wave ( 403A ) rotates freely, whereas the second wave ( 403B ) firmly with the second locking disc ( 408B ) formed planetary carrier is connected, and that a user-adjustable locking element alternatively, the rotation of one of the two locking discs ( 408A . 408B ) can prevent. Injection device according to claim 1, characterized in that that the syringe has two chambers with two pistons, and that the Einstechhub a Mischhub is connected upstream