CA2239515A1 - Spring-actuated needleless injector - Google Patents

Spring-actuated needleless injector

Info

Publication number
CA2239515A1
CA2239515A1 CA 2239515 CA2239515A CA2239515A1 CA 2239515 A1 CA2239515 A1 CA 2239515A1 CA 2239515 CA2239515 CA 2239515 CA 2239515 A CA2239515 A CA 2239515A CA 2239515 A1 CA2239515 A1 CA 2239515A1
Authority
CA
Canada
Prior art keywords
piston
force
vial
power
spring
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.)
Granted
Application number
CA 2239515
Other languages
French (fr)
Other versions
CA2239515C (en
Inventor
Jerald C. Umbaugh
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.)
GENESIS MEDICAL TECHNOLOGIES Inc
Original Assignee
GENESIS MEDICAL TECHNOLOGIES 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 GENESIS MEDICAL TECHNOLOGIES Inc filed Critical GENESIS MEDICAL TECHNOLOGIES Inc
Publication of CA2239515A1 publication Critical patent/CA2239515A1/en
Application granted granted Critical
Publication of CA2239515C publication Critical patent/CA2239515C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31533—Dosing mechanisms, i.e. setting a dose
    • A61M5/31545—Setting modes for dosing
    • A61M5/31548—Mechanically operated dose setting member
    • A61M5/3156—Mechanically operated dose setting member using volume steps only adjustable in discrete intervals, i.e. individually distinct intervals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/30—Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M2005/3103—Leak prevention means for distal end of syringes, i.e. syringe end for mounting a needle
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31533—Dosing mechanisms, i.e. setting a dose
    • A61M5/31545—Setting modes for dosing
    • A61M5/31548—Mechanically operated dose setting member
    • A61M5/31555—Mechanically operated dose setting member by purely axial movement of dose setting member, e.g. during setting or filling of a syringe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
    • A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
    • A61M5/31578—Constructional features or modes of drive mechanisms for piston rods based on axial translation, i.e. components directly operatively associated and axially moved with plunger rod
    • A61M5/3158—Constructional features or modes of drive mechanisms for piston rods based on axial translation, i.e. components directly operatively associated and axially moved with plunger rod performed by axially moving actuator operated by user, e.g. an injection button
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
    • A61M5/3159—Dose expelling manners
    • A61M5/31593—Multi-dose, i.e. individually set dose repeatedly administered from the same medicament reservoir

Landscapes

  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

A needleless injector for injecting medication through the skin of a patient includes a vial which holds a volume of liquid medication. The vial includes a v ial piston which moves to force the liquid medication out of the vial. A power mechanism applies force to the vial piston. The power mechanism includes a power piston which has a plurality of ratchets. A spring is positioned to apply force to the power piston. A trigger engages the ratchets on the power piston to hold the pow er piston in place against the force applied by the spring. The trigger selectively releases the power piston so that the power piston moves in response to the force applied by the spring. The power piston applies the force to the vial piston to cause the v ial piston to force the liquid medication out of the vial. A cocking mechanism appli es force to the power piston to move the power piston against the force of the spri ng to engage the ratchets. A travel adjustment mechanism is moveable to position the spring within the power mechanism to control the movement of the power piston an d to thereby control the volume of liquid ejected from the vial.
CA 2239515 1997-08-12 1997-08-12 Spring-actuated needleless injector Expired - Fee Related CA2239515C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1997/013964 WO1999007435A1 (en) 1997-08-12 1997-08-12 Spring-actuated needleless injector

Publications (2)

Publication Number Publication Date
CA2239515A1 true CA2239515A1 (en) 1999-02-12
CA2239515C CA2239515C (en) 2006-09-05

Family

ID=22261410

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2239515 Expired - Fee Related CA2239515C (en) 1997-08-12 1997-08-12 Spring-actuated needleless injector

Country Status (3)

Country Link
AU (1) AU4056497A (en)
CA (1) CA2239515C (en)
WO (1) WO1999007435A1 (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19913344C1 (en) * 1999-03-24 2000-08-24 Deutscher Zahnarzt Verlag Dzv Needleless injection syringe includes mounting for capsule of medicament with piston operated by spring, which can be tensioned from common rotary unit
US6689092B2 (en) 2000-03-03 2004-02-10 Boehringer International Gmbh Needle-less injector of miniature type
US8287516B2 (en) 2004-03-26 2012-10-16 Unomedical A/S Infusion set
JP4904283B2 (en) 2004-12-01 2012-03-28 アキュショット インク Needleless syringe
AU2005313662B2 (en) 2004-12-10 2011-07-14 Unomedical A/S Cannula inserter
US7985199B2 (en) 2005-03-17 2011-07-26 Unomedical A/S Gateway system
DE602005023458D1 (en) 2005-09-12 2010-10-21 Unomedical As A delivery system for an infusion set having first and second spring units
DE602006019153D1 (en) 2005-12-23 2011-02-03 Unomedical As injection device
US9211379B2 (en) 2006-02-28 2015-12-15 Unomedical A/S Inserter for infusion part and infusion part provided with needle protector
WO2007140783A2 (en) 2006-06-07 2007-12-13 Unomedical A/S Inserter for transcutaneous sensor
RU2438720C2 (en) 2006-06-09 2012-01-10 Уномедикал А/С Setting pad
CN101500627B (en) 2006-08-02 2012-03-14 优诺医疗有限公司 Cannula and delivery device
EP1917990A1 (en) 2006-10-31 2008-05-07 Unomedical A/S Infusion set
AU2008266382B2 (en) 2007-06-20 2013-06-27 Unomedical A/S A catheter and a method and an apparatus for making such catheter
CN101808685A (en) 2007-07-03 2010-08-18 优诺医疗有限公司 Inserter having bistable equilibrium states
PL2173410T3 (en) 2007-07-10 2011-09-30 Unomedical As Inserter having two springs
US8246588B2 (en) 2007-07-18 2012-08-21 Unomedical A/S Insertion device with pivoting action
CN101951978A (en) 2008-02-13 2011-01-19 优诺医疗有限公司 Sealing between a cannula part and a fluid path
MX2010009087A (en) 2008-02-20 2011-05-03 Unomedical As Insertion device with horizontally moving part.
MX2011005735A (en) 2008-12-22 2011-06-21 Unomedical As Medical device comprising adhesive pad.
WO2011012465A1 (en) 2009-07-30 2011-02-03 Unomedical A/S Inserter device with horizontal moving part
BR112012002804A2 (en) 2009-08-07 2016-05-31 Unomedical As sensor device and one or more cannulas
WO2011121023A1 (en) 2010-03-30 2011-10-06 Unomedical A/S Medical device
EP2433663A1 (en) 2010-09-27 2012-03-28 Unomedical A/S Insertion system
EP2436412A1 (en) 2010-10-04 2012-04-04 Unomedical A/S A sprinkler cannula
US11197689B2 (en) 2011-10-05 2021-12-14 Unomedical A/S Inserter for simultaneous insertion of multiple transcutaneous parts
EP2583715A1 (en) 2011-10-19 2013-04-24 Unomedical A/S Infusion tube system and method for manufacture
US9440051B2 (en) 2011-10-27 2016-09-13 Unomedical A/S Inserter for a multiplicity of subcutaneous parts

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4124024A (en) * 1977-03-03 1978-11-07 Schwebel Paul R Disposable hypodermic injection ampule

Also Published As

Publication number Publication date
AU4056497A (en) 1999-03-01
CA2239515C (en) 2006-09-05
WO1999007435A1 (en) 1999-02-18

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed