DE10116778A1 - Injection device - Google Patents

Injection device

Info

Publication number
DE10116778A1
DE10116778A1 DE2001116778 DE10116778A DE10116778A1 DE 10116778 A1 DE10116778 A1 DE 10116778A1 DE 2001116778 DE2001116778 DE 2001116778 DE 10116778 A DE10116778 A DE 10116778A DE 10116778 A1 DE10116778 A1 DE 10116778A1
Authority
DE
Germany
Prior art keywords
characterized
injection device
device according
preceding
hydraulic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE2001116778
Other languages
German (de)
Inventor
Stefan Matucha
Markus Burkhart
Original Assignee
Roesch Ag Medizintechnik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Roesch Ag Medizintechnik filed Critical Roesch Ag Medizintechnik
Priority to DE2001116778 priority Critical patent/DE10116778A1/en
Publication of DE10116778A1 publication Critical patent/DE10116778A1/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/30Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/20Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M5/2053Media being expelled from injector by pressurised fluid or vacuum
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/24Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31533Dosing mechanisms, i.e. setting a dose
    • A61M5/31545Setting modes for dosing
    • A61M5/31546Electrically operated dose setting, e.g. input via touch screen or plus/minus buttons

Abstract

An injection device for the needle-less injection of a medium into human or animal tissue, injects the medium for injection in several serial pressurised jets. A chamber (18), containing the injection medium is reduced incrementally. The injection device comprises a base station (1) and a manual device (3) connected to said base station (1).

Description

The invention relates to an injection device for Injection of a medium into tissue of a human or of an animal with a chamber for receiving the inji decorative medium, with one connected to the chamber and for opening on the skin provided with Means for reducing the volume of the chamber for Generation of a pressure jet emerging from the opening of the medium to be injected.

Such an injection device is, for example, from WO 98/15307 known. With this injection device the chamber is bounded by a piston. One by one Spring biased in the direction of the piston is held by a hand-operated trigger. When the trigger is pressed, the pressure piece of the force of the spring moves against the piston and the cam always reduced. With the opening placed on the skin the medium to be injected enters the subcutaneous tissues of humans or animals.

This makes it particularly easy to use different medications drug or anesthetic without using a needle inject the tissue. The disadvantage, however, is that the known injection device for each administration of the Drug or anesthetic again that must. This leads especially to the administration of several small amounts of anesthetic in the mouth area to a time consuming administration of the whole injecting amount.  

The invention is based on the problem, an injection onseinrichtung of the type mentioned so too gestal that with her to inject the intended amount of the medium can be administered particularly comfortably.

This problem is solved according to the invention in that the means for reducing the volume of the chamber in provided partial steps controllable and for generation several successive substeps are.

Through this design, the means for the small tion of the volume of the chamber thanks to the invention over sufficient energy to generate several smaller pressures shine. Therefore, several are smaller when administered Amounts of the medium to be injected no constant chip NEN of the injection device according to the invention required. As a result, the intended one can be made up of several parts amounts of compound amount of the medium to be injected for particularly convenient administration. In particular performs anesthesia in dentistry thanks to the Erfin in a particularly short amount of time.

The means of reducing the volume could be like that known injection device a hand-tensionable Ener have memory. To further simplify the amount of the medium to be injected it does, however, help if the means of downsizing the volume a hydraulic device and / or a Have pneumatic device.

The sub-steps can be according to another advantage adhere to the invention particularly precisely when the hydraulic device adjusts the volume directly or indirectly limiting the chamber Has power transmission element and if an adjustable  Stop to limit the path of a donor col bens out of a master cylinder of the hydraulic device forms is. With this design, the generated Print jet stopped immediately when the movement of the Encoder piston is limited by the stop.

The power transmission element is designed according to a other advantageous development of the invention kon structurally particularly simple if the power transmission element a slave piston of a slave cylinder and egg has a piston protruding into the chamber or on one the volume of the chamber delimiting piston.

A high pressure in the hydraulic device can be according to another advantageous development of the Er Just avoid finding the inside of the chamber protruding piston has a smaller diameter than the slave piston of the hydraulic device.

The injection device according to the invention can be particularly handy to use when the chamber for recording of the medium to be injected in a via a hydraulic lik line with the master cylinder of the hydraulic device connected handheld device is arranged.

The chamber could, for example, as in the known one Injection device have the opening and at for example, be connected to the handheld device. hereby the ampoules of the well-known injection device continue to use. However, the handheld device can be used with han standard and therefore inexpensive standard ampoules are operated with needle for injection devices, if the chamber has a channel with the one at the free end of the handheld device arranged opening is connected. Wei The channel can also be angled so that it  reach hard to reach places in the mouth area sen.

The hydraulic device could, for example Pressure accumulator and an electrically operated hydraulic system have pump for filling the pressure accumulator. Which he Injection device according to the invention is designed but particularly inexpensive if the master piston Hydraulic system with a Pneumati slave piston no direction is connected and if the diameter of the Slave piston of the pneumatic device is larger than that Diameter of the master piston of the hydraulic device. This allows you to use a dental chair already existing compressed air connection with a low a high pressure in the hydraulic system Simply create the facility.

After each injection, you can make another one partial development of the invention of the master piston the hydraulic device in its intended position move the stop if a hydraulic valve with the Hydraulic line and with a reservoir for Hy draulic fluid is connected.

A gradual movement of the Hydrau slave piston Likeinrichtung requires according to another advantageous ten development of the invention a particularly low construction effort when changing the hydraulic valve the connection of the handheld device or the storage container is formed with the master cylinder.

Connected to the slave piston of the pneumatic device The master piston of the hydraulic device can be lowered every pressure pulse simply returns to its starting position move back when the slave piston of the pneumatic device  using a pneumatic valve in both movements directions can be pressurized.

A leak of medium to be injected from the public voltage before the intended pressure builds up in the chamber is, according to another advantageous further simply avoid education of the invention if in the to a check valve is arranged in the opening leading channel is not.

With the skin of humans or animals, as well as with the components coming into contact with the medium to be injected can be according to another advantageous development simply clean the invention or for once Design use when the handheld device has a basic body to connect the hydraulic line and one with the Has base body releasably connectable head with the opening. The head can be, for example, that of the one in WO 98/15307 described injection device known ampoule or a housing for receiving one from the injection device with a known ampoule. Selbstver of course the head can also be a refillable and pre Use chamber to be opened.

The medium to be injected can be contaminated according to another advantageous development of the Er Simply avoid finding if the head is a thorn to the Penetrating a protective sheath for the one to be injected Has medium containing ampoule.

Throttling areas between the chamber and the opening can be according to another advantageous development simply avoid the invention if the mandrel is a hollow needle connected to the opening.  

In the chamber and between the opening and the chamber air can be pre-injected according to a other advantageous development of the invention quickly remove if the hydraulic device or the pneumatic device a throttle for control the rate at which the chamber shrinks has. The pneumatic valve is preferably a throttle educated.

The injection device according to the invention is designed particularly compact if the hydraulic valve, the Pneuma Tikventil, the reservoir, the master cylinder of the Hydraulic device with the slave cylinder of the Pneumati are not arranged in a ground station.

To further simplify the operation of the Invention according to the injection device, it helps if that Handheld device a switch for controlling the pneumatic valve tils and / or the hydraulic valve.

The injection device according to the invention has particular few components to be assembled if an electronic one Control for detecting the position of the switch and to control the pneumatic valve and / or the hydraulic valve lik valve is arranged in the ground station.

The number and the size of the steps in the Verrin volume and pressure in the hydraulic system direction can be according to another advantageous Training of the invention simply set when the electronic control with an input field for input the intended pressure in the hydraulic device and / or the position of the stop is connected.

The proposed sub-steps can be done according to a advantageous development of the invention by a  a thread adjustable actuator for adjustment simply set the stop. The actuator can for example an adjusting screw or an adjusting nut his. The control element is preferably at a pressure converter between the hydraulic device and the pneuma arranged tikeinrichtung.

To further simplify the operation of the Invention according injection device carries it through one of the stepper motor controlled by the electronic control to adjust the stop at.

The invention permits numerous embodiments. to there is a further clarification of their basic principle of shown in the drawing and is below described. This shows in

Fig. 1 is a circuit diagram of an inventive In jektionseinrichtung,

Fig. 2 shows a schematic longitudinal section through a hand-held device of the injection device of Fig. 1

Fig. 3 is a sectional view through a Teilbe rich a pressure transducer with a stop.

Fig. 1 shows a circuit diagram and signal flow diagram of an injection device for needleless injection of a medium into the tissue of a human or animal. The injection device has a ground station 1 and a hand-held device 3 connected to it via a hydraulic line 2 . A pneumatic device 4 and a hydraulic device 5 are arranged on the ground station 1 . The pneumatic device 4 has a pneumatic connection 6 with an adjustable pressure reducing valve for connecting the injection device to a compressed air network, not shown, and a double-acting slave cylinder 7 . The application of compressed air to the slave cylinder 7 is controlled via a pneumatic valve 8 designed as a 5/3 way valve. Compressed air passes from the pneumatic valve 8 to a pressure converter 9 with the slave cylinder 7 and a master cylinder 10 of the hydraulic device 5 . Depending on the speed of the position of the pneumatic valve 8 , a slave piston 11 can be driven in the slave cylinder 7 in the intended direction. A master piston 12 of the hydraulic device 5 is made in one piece with the slave piston 11 of the pneumatic device 4 . The movement of the piston Neh 11 of the pneumatic device 4 and thus the master piston 12 of the hydraulic device 5 can be limited to a stroke 14 by a stepper motor 13 to 14 . The master cylinder 10 is connected to a hydraulic valve 15 designed as a 3 /2-way valve. The hydraulic valve 15 connects the Geberzylin 10 either with the handheld device 3 or with a reservoir 16 for hydraulic fluid.

The handheld device 3 has a slave cylinder 17 of the hydraulic likeinrichtung 5 and a chamber 18 for a medium to be injected. An opening 19 is arranged at the free end of the hand-held device 3 . With this end, the handheld device 3 is pressed onto the skin of humans or animals. When the injection device is activated, for example by actuating a switch 20 , the medium is ejected from the chamber 18 through the opening 19 in the form of a pressure jet. The compressive force from the hydraulic device 5 is transmitted from the slave piston 11 on an projecting into the chamber 18 piston 21 having power transmission member 22nd A slave piston 23 of the hydraulic device 5 has a larger diameter than the piston 21 that can be moved into the chamber.

Through a suitable choice of the diameters of the piston 21 and the slave piston 23 of the hydraulic device 5 , the pressure in the chamber 18 can be determined when the injection device is activated at a predetermined pressure in the hydraulic line 2 . The slave piston 23 of the hydraulic likeinrichtung 5 is biased by a spring 24 in the direction of the master cylinder 10 . The slave piston 11 of the pneumatic device 4 has a larger diameter than the master piston 12 of the hydraulic device 5 . By means of a suitable ratio of the diameters, a provided pressure in the hydraulic device 5 can be selected with a set pressure behind the connection 6 .

The pneumatic valve 8 , the stepper motor 13 , the hydraulic likventil 15 and the switch 20 and the adjustable pressure reducing valve in the port 6 are connected to an electronic control 25 . The electronic control 25 can be programmed via an input field 26 .

FIG. 2 shows a sectional view through the hand-held device 3 from FIG. 1 in a longitudinal section. The handheld device 3 has a base body 27 and a head 28 connected to the base body 27 . The connection can have, for example, a bayonet lock (not shown) or a thread. A commercial ampoule 29 with a medium to be injected is inserted into the base body 27 . The ampoule 29 has a rubber closure 30 on its side facing away from the piston 21 . The element 22 connected to the slave piston of the hydraulic device is supported on the piston 21 . The medium to be injected can be, for example, an anesthetic. The rubber closure 30 is pierced in the position shown by a thorn 31 designed as a hollow needle. As a result, the medium to be injected arrives at a check valve 32 arranged in the head 28 . The check valve 32 opens above a predetermined pressure. As a result, the medium to be injected can pass through a channel 33 to the opening 19 arranged at the free end of the head 28. The head 28 is shown angled here. Of course, the head 28 can also be straight. Furthermore, instead of the ampoule, an ampoule known from WO 98/15307 can be used and placed on the base body 27 .

Fig. 3 shows a sectional view through a Teilbe rich of the master cylinder 10 of the hydraulic device 5 and slave cylinder 7 of the pneumatic device 4 th pressure transducer 9 from Fig. 1. It can be seen that the stop 14 is arranged on an impact pin 34 is. The impact bolt 34 can be displaced by a deflection bolt 35 in the direction of the slave piston 11 of the pneumatic device 4 . The stepper motor 13 for driving the stop 14 drives a arranged on the pressure transducer 9 , with an inclined plane on the deflecting bolt 35 adjacent adjusting ring 36 .

The ampoule 29 can be emptied in partial steps in which a plurality of pressure jets are generated one after the other at the opening 19 by the slave piston 11 of the pneumatic device 4 from FIG. 1 first being moved to the left as far as the housing stop 37 . The hydraulic valve is switched so that the master cylinder 10 is connected to the reservoir 16 . As a result, hydraulic fluid flows from the reservoir 16 to the master cylinder 10 . Then the hydraulic valve 15 is switched so that the master cylinder 10 of the hydraulic likeinrichtung 5 is connected to the slave cylinder 17 in the handheld device 3 . The pneumatic valve 8 can now be switched so that the slave piston 11 is moved to the right up to the set stop 14 . As a result, the master cylinder 10 of the hydraulic device 5 is also moved to the right and thus the slave piston 23 of the hydraulic device 5 in the direction of the piston 21 of the ampoule 29 . As a result, a pressure jet on the medium to be injected is ejected from the opening 19 . For the generation of the next pressure jet, the hydraulic valve 15 is switched over again and the slave piston 11 of the pneumatic device 4 is shifted to the left. The greater the distance between the displaceable stop 14 and the fixed housing stop 37 in the slave cylinder 7 of the Pneumatikein device 4 , the greater the amount of the medium to be injected, which is ejected with each pressure jet.

The spring 24 is used to overcome the friction of the piston Neh 23 of the hydraulic device 5 when, after the conclusion of the injection, the pneumatic device 4 and the hydraulic device 5 are reversed as described above to suck the hydraulic fluid from the slave cylinder 17 .

Claims (22)

1. Injection device for injecting a medium into tissue of a human or an animal with a chamber for receiving the medium to be injected, with an opening connected to the chamber and intended to be placed on the skin, with means for reducing the volume of the chamber to produce a Pressure jet emerging from the opening of the medium to be injected, characterized in that the means for reducing the volume of the chamber ( 18 ) can be controlled in the intended partial steps and are designed to generate several successive partial steps.
2. Injection device according to claim 1, characterized in that the means for reducing the volume have a hydraulic device ( 5 ) and / or a Pneumatikein device ( 4 ).
3. Injection device according to claim 1 or 2, characterized in that the hydraulic device ( 5 ) has a directly or indirectly limiting the volume of the chamber ( 18 ) be power transmission element ( 22 ) and that an adjustable stop ( 14 ) for limiting the path of a master piston ( 12 ) of a master cylinder ( 10 ) of the hydraulic device ( 5 ) is formed.
4. Injection device according to at least one of the preceding claims, characterized in that the force transmission element ( 22 ) has a slave piston ( 23 ) of a slave cylinder ( 17 ) and a piston ( 21 ) protruding into the chamber ( 18 ) or the volume of the Chamber ( 18 ) delimiting piston ( 21 ).
5. Injection device according to at least one of the preceding claims, characterized in that the piston ( 21 ) projecting into the chamber ( 18 ) has a smaller diameter than the slave piston ( 23 ) of the hydraulic device ( 5 ).
6. Injection device according to at least one of the preceding claims, characterized in that the chamber advises ( 18 ) for receiving the medium to be injected in a via a hydraulic line ( 2 ) with the Geberzylin ( 10 ) of the hydraulic device ( 5 ) Handge ( 3 ) is arranged.
7. Injection device according to at least one of the preceding claims, characterized in that the chamber ( 18 ) via a channel ( 33 ) with the at the free end of the handheld device ( 3 ) arranged opening ( 19 ) is connected.
8. Injection device according to at least one of the preceding claims, characterized in that a Ge piston ( 12 ) of the hydraulic device ( 5 ) with a slave piston ( 11 ) of the pneumatic device ( 4 ) is connected and that the diameter of the slave piston ( 11 ) of the pneumatic device ( 4 ) is larger than the diameter of the master piston ( 12 ) of the hydraulic device ( 5 ).
9. Injection device according to at least one of the preceding claims, characterized in that a hy draulic valve ( 15 ) with the hydraulic line ( 2 ) and with a reservoir ( 16 ) for hydraulic fluid is connected.
10. Injection device according to at least one of the preceding claims, characterized in that the hydraulic valve ( 15 ) for alternating connection of the hand-held device ( 3 ) or the storage container ( 16 ) with the master cylinder ( 10 ) is formed.
11. Injection device according to at least one of the preceding claims, characterized in that the slave piston ( 11 ) of the pneumatic device ( 4 ) can be pressurized in both directions of movement by means of a pneumatic valve ( 8 ).
12. Injection device according to at least one of the preceding claims, characterized in that a return check valve ( 32 ) is arranged in the channel ( 33 ) leading to the opening ( 19 ).
13. Injection device according to at least one of the preceding claims, characterized in that the hand-held device ( 3 ) has a base body ( 27 ) for connecting the hydraulic line ( 2 ) and a head ( 28 ) detachably connectable to the base body ( 27 ) with the opening ( 19 ) has.
14. Injection device according to at least one of the preceding claims, characterized in that the head ( 28 ) has a mandrel ( 31 ) for piercing a protective sheath (rubber closure 30 ) of an ampoule ( 29 ) containing the medium to be injected.
15. Injection device according to at least one of the preceding claims, characterized in that the mandrel ( 31 ) is a hollow needle connected to the opening ( 19 ).
16. Injection device according to at least one of the preceding claims, characterized in that the hydraulic device ( 5 ) or the pneumatic device ( 3 ) has a throttle for regulating the speed of reduction of the chamber ( 18 ).
17. Injection device according to at least one of the preceding claims, characterized in that the hydraulic valve ( 15 ), the pneumatic valve ( 8 ), the pre-storage container ( 16 ), the master cylinder ( 10 ) of the hydraulic device ( 5 ) with the slave cylinder ( 7 ) the pneumatic device ( 4 ) are arranged in a ground station ( 1 ).
18. Injection device according to at least one of the preceding claims, characterized in that the hand-held device ( 3 ) has a switch ( 20 ) for actuating the pneumatic valve ( 8 ) and / or the hydraulic valve ( 15 ).
19. Injection device according to at least one of the preceding claims, characterized in that an electronic control ( 25 ) for detecting the position of the switch ( 20 ) and for controlling the Pneumatic valve ( 8 ) and / or the hydraulic valve ( 15 ) in the bottom station ( 1 ) is arranged.
20. Injection device according to at least one of the preceding claims, characterized in that the electronic control ( 25 ) with an input field ( 26 ) for entering the intended pressure in the Hydraulikein direction ( 5 ) and / or the position of the stop ( 14 ) connected is.
21. Injection device according to at least one of the preceding claims, characterized by an adjusting element (adjusting ring 36 ) adjustable via a thread for adjusting the stop ( 14 ).
22. Injection device according to at least one of the preceding claims, characterized by a stepper motor ( 13 ) controlled by the electronic control ( 25 ) for adjusting the stop ( 14 ).
DE2001116778 2001-04-04 2001-04-04 Injection device Withdrawn DE10116778A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2001116778 DE10116778A1 (en) 2001-04-04 2001-04-04 Injection device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE2001116778 DE10116778A1 (en) 2001-04-04 2001-04-04 Injection device
PCT/DE2002/001216 WO2002081009A2 (en) 2001-04-04 2002-04-04 Injection device
AU2002257551A AU2002257551A1 (en) 2001-04-04 2002-04-04 Injection device
DE2002191430 DE10291430D2 (en) 2001-04-04 2002-04-04 Injection device

Publications (1)

Publication Number Publication Date
DE10116778A1 true DE10116778A1 (en) 2002-10-17

Family

ID=7680358

Family Applications (2)

Application Number Title Priority Date Filing Date
DE2001116778 Withdrawn DE10116778A1 (en) 2001-04-04 2001-04-04 Injection device
DE2002191430 Expired - Fee Related DE10291430D2 (en) 2001-04-04 2002-04-04 Injection device

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE2002191430 Expired - Fee Related DE10291430D2 (en) 2001-04-04 2002-04-04 Injection device

Country Status (3)

Country Link
AU (1) AU2002257551A1 (en)
DE (2) DE10116778A1 (en)
WO (1) WO2002081009A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004023235A1 (en) * 2004-02-03 2005-09-01 Mansouri, Said, Dr.med.dent. Syringe for injecting anesthetic, comprises a second hydraulic chamber arranged at the rear of a first hydraulic chamber and connected to the first chamber so it can be rheostatically controlled
US7717879B2 (en) 2004-02-03 2010-05-18 Smjm Inject Gmbh Anesthetic syringe
DE102008058213A1 (en) 2008-11-19 2010-05-20 B. Braun Melsungen Ag Anesthesia syringe with a longitudinally displaceable feed piston and check valve with passage and reverse direction and use of an O-ring as a check valve
US8535268B2 (en) 2010-12-22 2013-09-17 Alcon Research, Ltd. Device for at least one of injection or aspiration

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3292621A (en) * 1963-07-19 1966-12-20 Oscar H Banker Jet type protable inoculator
US3424154A (en) * 1965-11-08 1969-01-28 Charles W Kinsley Injection system
US3827601A (en) * 1973-03-23 1974-08-06 J Magrath Hand powered liquid dispenser of the metering type
US4059107A (en) * 1975-05-08 1977-11-22 Asahi Kasei Kogyo Kabushiki Kaisha Two step type pressurized injector
US5116313A (en) * 1989-08-31 1992-05-26 Her Majesty The Queen In Right Of Canada, As Represented By The National Research Council Variable intensity remote controlled needleless injectors
WO1992010226A1 (en) * 1990-12-07 1992-06-25 Sy-Quest International Limited Jet injector for mass inoculation
EP0496141A1 (en) * 1991-01-22 1992-07-29 Eli Lilly And Company Multiple dose injection pen
WO1993008854A1 (en) * 1991-11-04 1993-05-13 Kabi Pharmacia Ab A method and device for dosing a liquid preparation
DE4434114A1 (en) * 1993-10-22 1995-04-27 Siemens Elema Ab Method and device for measuring the flow resistance of a catheter in an implanted infusion system for drugs
DE19607922C2 (en) * 1996-03-01 1998-01-29 Grund Karl Ernst Prof An apparatus for endoscopic injecting at least one liquid
US6063054A (en) * 1998-05-13 2000-05-16 Mark L. Anderson Injector pump
DE19939023A1 (en) * 1999-08-18 2001-02-22 Disetronic Licensing Ag Device for administering an injectable product

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB995605A (en) * 1960-08-04 1965-06-23 Amalgamated Dental Co Ltd Improvements relating to hypodermic injection apparatus
JPH0284962A (en) * 1988-06-14 1990-03-26 Vci Corp Negative pressure contact syringe without needle

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3292621A (en) * 1963-07-19 1966-12-20 Oscar H Banker Jet type protable inoculator
US3424154A (en) * 1965-11-08 1969-01-28 Charles W Kinsley Injection system
US3827601A (en) * 1973-03-23 1974-08-06 J Magrath Hand powered liquid dispenser of the metering type
US4059107A (en) * 1975-05-08 1977-11-22 Asahi Kasei Kogyo Kabushiki Kaisha Two step type pressurized injector
US5116313A (en) * 1989-08-31 1992-05-26 Her Majesty The Queen In Right Of Canada, As Represented By The National Research Council Variable intensity remote controlled needleless injectors
WO1992010226A1 (en) * 1990-12-07 1992-06-25 Sy-Quest International Limited Jet injector for mass inoculation
EP0496141A1 (en) * 1991-01-22 1992-07-29 Eli Lilly And Company Multiple dose injection pen
WO1993008854A1 (en) * 1991-11-04 1993-05-13 Kabi Pharmacia Ab A method and device for dosing a liquid preparation
DE4434114A1 (en) * 1993-10-22 1995-04-27 Siemens Elema Ab Method and device for measuring the flow resistance of a catheter in an implanted infusion system for drugs
DE19607922C2 (en) * 1996-03-01 1998-01-29 Grund Karl Ernst Prof An apparatus for endoscopic injecting at least one liquid
US6063054A (en) * 1998-05-13 2000-05-16 Mark L. Anderson Injector pump
DE19939023A1 (en) * 1999-08-18 2001-02-22 Disetronic Licensing Ag Device for administering an injectable product

Also Published As

Publication number Publication date
AU2002257551A1 (en) 2002-10-21
WO2002081009A2 (en) 2002-10-17
DE10291430D2 (en) 2004-04-15
WO2002081009A3 (en) 2002-12-12

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