DEVICES, SYSTEMS AND METHODS FOR MEDICAMENT DELIVERY

• US 20110196300A1
• Filed: 04/20/2011
• Published: 08/11/2011
• Est. Priority Date: 11/22/2004
• Status: Active Grant

• Current Assignee: Kaleo, Inc.
• Original Assignee: Intelliject Incorporated
• Inventors: LICATA, Mark J., EDWARDS, Evan Thomas, EDWARDS, Eric Shawn
• Granted Patent: US 8,361,029 B2
• Time in Patent Office: Days
• US Class Current: 604/144
• CPC Class Codes: A61M 2005/2013 triggering of discharging means by contact of injector with patient body
• CPC Class Codes: A61M 2005/206 With automatic needle insertion
• CPC Class Codes: A61M 2005/2073 preventing premature release, e.g. by making use of a safety lock
• CPC Class Codes: A61M 2005/3128 Incorporating one-way valves, e.g. pressure-relief or non-return valves
• CPC Class Codes: A61M 5/19 having more than one chamber , e.g. including a manifold coupling two parallelly aligned syringes through separate channels to a common discharge assembly surgical glue applicators A61B17/00491
• CPC Class Codes: A61M 5/2033 Spring-loaded one-shot injectors with or without automatic needle insertion multishot dosing syringes A61M5/31525, needle insertion only A61M5/3287
• CPC Class Codes: A61M 5/2046 Media being expelled from injector by gas generation, e.g. explosive charge
• CPC Class Codes: A61M 5/2053 Media being expelled from injector by pressurised fluid or vacuum for infusion A61M5/145, A61M5/155
• CPC Class Codes: A61M 5/24 Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic ampoules or carpules A61J1/06
• CPC Class Codes: A61M 5/2448 comprising means for injection of two or more media, e.g. by mixing
• CPC Class Codes: A61M 5/3129 Syringe barrels A61M5/3205 and A61M5/50 take precedence
• CPC Class Codes: A61M 5/3204 Needle cap remover, i.e. devices to dislodge protection cover from needle or needle hub, e.g. deshielding devices
• CPC Class Codes: A61M 5/326 Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user

Abstract

An apparatus includes a movable member and a valve coupled to the movable member. The movable member is configured to be disposed within a housing of a medical device and has a first end portion and second end portion. A portion of the first end portion is configured to define a portion of a boundary of a gas chamber. The first end portion defines an opening configured to be in fluid communication between the gas chamber and an area outside the gas chamber. The second end portion is configured to be coupled to a needle configured to deliver a medicament into a body. The valve is configured to selectively allow fluid communication between the gas chamber and the area outside the gas chamber through the opening defined by the first end portion of the movable member.

Claims

1. An apparatus, comprising:

a movable member configured to be disposed within a housing of a medical device, the movable member having a first end portion and second end portion, a portion of the first end portion configured to define a portion of a boundary of a gas chamber, the first end portion defining an opening configured to be in fluid communication between the gas chamber and an area outside the gas chamber, the second end portion configured to be coupled to a needle configured to deliver a medicament into a body; and

a valve coupled to the movable member, the valve configured to selectively allow fluid communication between the gas chamber and the area outside the gas chamber through the opening defined by the first end portion.

2. The apparatus of claim 1, wherein the movable member includes a sealing portion configured to engage a portion of the housing to fluidically isolate the gas chamber from the area outside the gas chamber.

3. The apparatus of claim 1, wherein the movable member includes an o-ring configured to engage a portion of the housing to fluidically isolate the gas chamber from the area outside the gas chamber.

4. The apparatus of claim 1, wherein the valve includes a valve body and a biasing member,

the valve body configured to be disposed within a portion of the opening in a first position and a second position, in the first position the valve body is positioned to fluidically isolate the gas chamber from the area outside the gas chamber, in the second position the valve body is positioned such that gas chamber is in fluid communication with the area outside the gas chamber,

the biasing member configured to bias the valve body in the first position.

5. The apparatus of claim 1, wherein the valve includes a frangible seal.

6. The apparatus of claim 1, wherein the valve includes a movable sealing member disposed about the opening.

7. The apparatus of claim 1, further comprising an actuator configured to move the valve between a first position and a second position, in the first position the gas chamber is fluidically isolated from the area outside the gas chamber, in the second position the gas chamber is in fluid communication with the area outside the gas chamber.

8. The apparatus of claim 1, further comprising an actuator coupled to the movable member, the actuator configured to move the valve between a first position and a second position, in the first position the gas chamber is fluidically isolated from the area outside the gas chamber, in the second position the gas chamber is in fluid communication with the area outside the gas chamber.