Disposable Medicine Dispensing Device

• US 20070276329A1
• Filed: 01/28/2005
• Published: 11/29/2007
• Est. Priority Date: 01/29/2004
• Status: Active Grant

• Current Assignee: Insulet Corporation, M2 Medical Group Holdings, Inc.
• Original Assignee: Asante Solutions, Inc
• Inventors: Mernoe, Morten
• Granted Patent: US 7,753,879 B2
• Time in Patent Office: Days
• US Class Current: 604/155
• CPC Class Codes: A61M 2005/14252 with needle insertion means
• CPC Class Codes: A61M 2005/1426 with means for preventing access to the needle after use
• CPC Class Codes: A61M 2005/14533 cam actuated
• CPC Class Codes: A61M 2005/31518 designed to reduce the overall size of an injection device, e.g. using flexible or pivotally connected chain-like rod members
• CPC Class Codes: A61M 2205/0222 Materials for reducing friction
• CPC Class Codes: A61M 2205/0266 Shape memory materials
• CPC Class Codes: A61M 5/14248 of the skin patch type
• CPC Class Codes: A61M 5/1454 spring-actuated, e.g. by a clockwork
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump
• CPC Class Codes: B05C 17/0113 the piston rod being flexible or articulated B05C17/0109 takes precedence

Abstract

A combination of a disposable, wearable, self-contained medicine dispensing device, a cylindrical medicine container 52 incorporating a piston and having an open distal end and a proximal end closed by a closure body 54 made of a material, preferably silicone, that can be perforated by a needle, and a catheter device 16 having adhesive means 26 for attaching the catheter device to the skin of a user of the combination, the dispensing device comprising a housing 34, 36 having a compartment for receiving the container and further a not shown piston rod for displacing the piston towards the closed proximal end and actuating means for displacing the piston rod, the catheter device comprising a sealing ring 56′for receiving the closure body, and the dispensing device and the catheter device comprising co-operating attachment means for attaching the dispensing device to the catheter device with the container received in the compartment with the piston rod abutting the piston and the closure body received in the sealing ring.

Claims

1-49. -49. (canceled)

50. A disposable, wearable medicine dispensing device comprising

a housing;

means for attaching said housing to the skin of a user of said device,

a medicine container disposed in the housing;

a flexible piston rod having an outer thread pattern on at least a portion thereof, the piston rod being movable in a forward longitudinal direction to force medicine from the medicine container;

a ratchet wheel having an inner thread pattern on a central aperture to mate with the outer thread pattern of the flexible piston rod such that rotation of said ratchet wheel in a forward rotational direction displaces the flexible piston rod in the forward longitudinal direction;

a pivotable body disposed in the housing and adjustable between a forward position and a reset position, wherein adjustment of the pivotable body from the reset position to the forward position causes the ratchet wheel to rotate in said forward rotational direction;

a spring device to bias said pivotable body toward the forward position; and

an actuation system to controllably adjust the pivotable body toward the reset position, the actuation system comprising;

a thread member coupled to the pivotable body, and

a battery powered actuator coupled to the thread member so as to apply a tension force to the thread and thereby adjust the pivotable body.

51. The dispensing device of claim 50, further comprising a pawl member is disposed on a pivotable body.

52. The dispensing device of claim 50, wherein the flexible piston rod comprises rod segments hinged together, the outer thread pattern being on at least a portion of the rod segments.

53. The dispensing device of claim 52, wherein rod segments are connected by hinges that comprise integrally formed, bendable material.

54. The dispensing device of claim 53, wherein the bendable material comprises a material selected from the group consisting of Nylon or POM.

55. The dispensing device of claim 52, wherein the outer thread pattern is a discontinuous thread pattern.

56. The dispensing device of claim 50, wherein the battery powered actuator is a solenoid.

57. The dispensing device of claim 56, wherein the solenoid actuates is a linear motion to apply the tension force to the thread member.