CA2686433A1 - Double push injection device - Google Patents

Double push injection device Download PDF

Info

Publication number
CA2686433A1
CA2686433A1 CA 2686433 CA2686433A CA2686433A1 CA 2686433 A1 CA2686433 A1 CA 2686433A1 CA 2686433 CA2686433 CA 2686433 CA 2686433 A CA2686433 A CA 2686433A CA 2686433 A1 CA2686433 A1 CA 2686433A1
Authority
CA
Canada
Prior art keywords
container
needle
cartridge
plunger rod
wall
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.)
Abandoned
Application number
CA 2686433
Other languages
French (fr)
Inventor
David L. Reynolds
Daniel Macdonald
Yan Tremblay
Julie Trepanier
Steven Raymond
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Duoject Medical Systems Inc
Original Assignee
Duoject Medical Systems Inc
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 Duoject Medical Systems Inc filed Critical Duoject Medical Systems Inc
Priority to CA 2686433 priority Critical patent/CA2686433A1/en
Publication of CA2686433A1 publication Critical patent/CA2686433A1/en
Application status is Abandoned 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
    • A61M5/20Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M5/2066Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically comprising means for injection of two or more media, e.g. by mixing
    • 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
    • A61M5/2448Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic comprising means for injection of two or more media, e.g. by mixing
    • 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
    • A61M5/2455Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic with sealing means to be broken or opened
    • 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
    • A61M5/28Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle
    • A61M5/284Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle comprising means for injection of two or more media, e.g. by mixing
    • 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
    • A61M5/28Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle
    • A61M5/285Syringe ampoules or carpules, i.e. ampoules or carpules provided with a needle with sealing means to be broken or opened
    • 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
    • A61M5/31511Piston or piston-rod constructions, e.g. connection of piston with piston-rod

Description

DOUBLE PUSH INJECTION DEVICE
FIELD OF THE INVENTION

The present invention relates to a medical device and more particularly, relates to a reconstitution and injection system.

BACKGROUND OF THE INVENTION

As is well known in the art, many drugs are desirably stored as two separate components. The components are typically a dry component and a diluent therefore, although two liquid components could also be utilized. The advantages of storing one of the components in a dry form is that a greater shelf life is provided. Ideally, the drug and a diluent are mixed immediately prior to injection.

Although there are many different systems for reconstituting a drug by mixing a dry and a liquid component, such systems are relatively complex and expensive.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a reconstitution and injection system wherein both the reconstitution and injection can be done using the same device.

According to one embodiment of the present invention, there is provided a reconstitution injection system which comprises a housing having a front end and a rear end, a first cartridge containing a first substance, the first cartridge being located within the housing, the first cartridge having a first cartridge plunger and a first cartridge septum, a second cartridge containing a second substance, the second substance being located within the housing rearwardly of the first cartridge, the second cartridge having a second cartridge plunger and a second cartridge septum, a first needle hub intermediate the first and second cartridges, a first needle being mounted within the first needle hub, the first needle having both first and second piercing ends, a second needle hub located forwardly of the first cartridge, a second needle mounted in the second needle hub, the second needle having first and second piercing ends, a first biasing member mounted within the housing, the first biasing member being located forwardly of the second cartridge and being operative to bias the second cartridge rearwardly, and a plunger rod assembly securable to the second cartridge plunger.

BRIEF DESCRIPTION OF THE DRAWINGS

Having thus generally described the invention, reference will be made to the accompanying drawings, in which:

Figure 1A is an elevational view of a reconstitution and injection system according to an embodiment of the present invention:

Figures 1 B through 1 I are cross sectional views illustrating operation of the system.
DETAILED DESCRIPTION OF THE INVENTION

Referring to the drawings in greater detail and by reference characters thereto, there is illustrated a reconstitution and injection system which is generally designated by reference numeral 10.

Reconstitution injection system 10 includes a housing side wall 12 which is generally of a cylindrical configuration along with a distal end wall 14 and a proximal end wall 16.
For purposes of this application, distal means the end used for injection while proximal means the opposite end or the end where a pushing force is applied. Distal end wall 14 has a nose 18 formed thereon through which a passageway extends. It will be noted that there is also provided an enlarged portion 20 of housing wall 12 proximate distal wall 14. Enlarged portion 20 forms an ambutment wall 22.

-2-Mounted internally of housing wall 12 is a first container 24 which is of a generally cylindrical configuration and includes a neck portion 26. First container 24 also has a plunger 28 located at the proximal end thereof and a septum 30 covering the container opening.

A second container 32 is situated forwardly of first container 24 and also has a septum 34 and a plunger 36. It will be noted that the side wall defining second container 32 extends substantially past plunger 36 such that first container 24 is partially located within the wall of second container 32.

Mounted intermediate of first container 24 and second container 32 is a first needle hub 38 which includes a first needle 40 mounted therein. First needle 40 has a first piercing end 42 and a second piercing end 44.

Situated forwardly of first container 24 is a second needle hub 46 containing a second needle 48. Second needle 48 has a first piercing end 50 and an injection end 52. Second needle hub 46 also includes a wall 47 which extends about the wall defining second container 32 and partially about first container 24.

A spring 54 is mounted within housing wall 12 forwardly of second needle hub and is biased against second needle hub 46 and distal end wall 14.

For injection purposes and ease of handling, there are provided finger flanges 56 in a conventional manner.

The reconstitution and injection system 10 also includes an outer plunger rod which is screwthreadedly engaged with plunger 26 and an inner plunger rod 60 which is mounted inwardly of outer plunger rod 58 and releasably retained therein. A
spring 62 is mounted interiorly of outer plunger rod 58 and biases against inner plunger rod 60.

-3-As shown in Figures 1 C and I D, pressure on plunger rods 58, 60 as shown by arrow 64 will cause the movement of plunger 26 such that first needle 40 will pierce plunger 36 of second container 32 and septum 30 of first container 24. This will cause the material within first container 24 to transfer to second container 32. If desired, the device may be shaken to ensure proper reconstitution.

Continued pressure on plunger 28, as shown in Figure JE, will cause compression of spring 54 and permit the piercing of septum 34 by first piercing end 50 of second needle 48.
Second end 44 will then extend exteriorly of the housing wall 20 through nose 18.

At this point in time, inner plunger rod 60 may be released from its inner engagement with outer plunger rod 58. Spring 62 will then bias inner plunger rod 60 outwardly of outer plunger rod 58 as illustrated by arrow 66 in Figures IF. In so doing, inner plunger rod 60 has protrusions 68 which will lock with corresponding recesses formed in outer plunger rod 58.
The device is now ready for injection as shown in Figure 1G.

Following injection, release of pressure on inner plunger rod 60 will permit spring 54 to act on second container 32 to cause the retraction of needle 40 within housing 12. One may then safely dispose of the device.

-4-

Claims

CA 2686433 2009-11-20 2009-11-20 Double push injection device Abandoned CA2686433A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2686433 CA2686433A1 (en) 2009-11-20 2009-11-20 Double push injection device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA 2686433 CA2686433A1 (en) 2009-11-20 2009-11-20 Double push injection device
PCT/CA2010/001837 WO2011060541A1 (en) 2009-11-20 2010-11-19 Double push injection device

Publications (1)

Publication Number Publication Date
CA2686433A1 true CA2686433A1 (en) 2011-05-20

Family

ID=44059156

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2686433 Abandoned CA2686433A1 (en) 2009-11-20 2009-11-20 Double push injection device

Country Status (2)

Country Link
CA (1) CA2686433A1 (en)
WO (1) WO2011060541A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10350364B2 (en) 2009-11-11 2019-07-16 Windgap Medical, Inc. Portable Drug Mixing and Delivery Device and Associated Methods
CA2742555A1 (en) * 2011-06-10 2012-12-10 Duoject Medical Systems Inc. Injection device
EP2739328B1 (en) 2011-08-05 2018-04-04 UNL Holdings LLC Dual chamber mixing device for a syringe
US9821118B2 (en) 2011-09-02 2017-11-21 Unl Holdings Llc Automatic reconstitution for dual chamber syringe
US9889258B2 (en) * 2011-12-01 2018-02-13 Novo Nordisk A/S Drug filled delivery assembly
WO2013134614A2 (en) * 2012-03-08 2013-09-12 Becton, Dickinson And Company Drug reconstitution system
JP6362145B2 (en) * 2012-11-30 2018-07-25 ユーエヌエル ホールディングス エルエルシーUNL Holdings LLC Compound plunger device for dual chamber mixing syringe
US9907910B2 (en) 2013-03-15 2018-03-06 Windgap Medical, Inc. Portable drug mixing and delivery device and associated methods
US9199037B2 (en) 2013-03-15 2015-12-01 Windgap Medical, Inc. Portable drug mixing and delivery system and method
CA2914028A1 (en) * 2013-06-04 2014-12-11 Unitract Syringe Pty Ltd Actuation mechanisms for dual chamber mixing syringes
CN108290000A (en) * 2015-08-13 2018-07-17 温德加普医疗股份有限公司 Mixing with sterile features and injection device
CA2994803A1 (en) * 2014-08-18 2016-02-25 Windgap Medical, Inc. Portable drug mixing and delivery device and associated methods
EP3268068A1 (en) 2015-04-15 2018-01-17 Windgap Medical, LLC Removable actuating cap for use with an auto-injector assembly

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5281198A (en) * 1992-05-04 1994-01-25 Habley Medical Technology Corporation Pharmaceutical component-mixing delivery assembly
GB0705388D0 (en) * 2007-03-21 2007-04-25 Medical House Plc The Improved autoinjector

Also Published As

Publication number Publication date
WO2011060541A1 (en) 2011-05-26

Similar Documents

Publication Publication Date Title
US6783509B1 (en) Single-use needle-less hypodermic jet injection apparatus and method
US5695472A (en) Modular automatic or manual emergency medicine injection system
EP1177803B1 (en) Hypodermic syringe with selectively retractable needle
US6685676B2 (en) Safety shield system for prefilled syringes
US5868713A (en) Pneumatic retractable syringe
US4929241A (en) Medical needle puncture guard
US5554131A (en) Hypodermic needle with protection device
US2752918A (en) Hypodermic injection apparatus
CN101687080B (en) Device for administering a fluid active substance from a multi-chamber ampoule
JP5097553B2 (en) Automatic reduction injection device
EP2311510B1 (en) Automatic injector
CA2108326C (en) Single use disposable needleless injector
ES2691492T3 (en) Syringe holder for an automatic injection device
US9833579B2 (en) Medical injection device
JP5064495B2 (en) Infusion device with syringe carrier engaged with cap
US6159181A (en) Injection device
CN1066968C (en) Hollow needle applicator
EP1443985B1 (en) Disposable needle-free injection apparatus
US4813936A (en) Retracting hypodermic needle
US6221055B1 (en) Retractable dental syringe
JP2010188167A (en) Automatic injection device with reset feature
JP3487856B2 (en) Needleless syringe
ES2307736T3 (en) Security injector pre-filled for diluent.
US6471669B2 (en) Disposable needle-free injection apparatus and method
US5665071A (en) Reloadable automatic or manual emergency injection system

Legal Events

Date Code Title Description
FZDE Dead