Apparatus and system for delivery of drug therapies

• US 7,186,247 B2
• Filed: 04/04/2003
• Issued: 03/06/2007
• Est. Priority Date: 04/04/2003
• Status: Expired due to Fees

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Ujhelyi, Michael R., Min, Xiaoyi, Mehra, Rahul
• Primary Examiner(s): Sirmons; Kevin C.
• Assistant Examiner(s): Han; Mark K
• Application Number:
  US10/407,996
• Publication Number:
  US 20040199104A1
• Time in Patent Office: 1,432 Days
• Field of Search: 604/290, 604/310, 604/311, 604/2, 604/3, 604/19, 604/306, 604181-185, 604/212, 604/218, 604/890.1, 604/891.1, 604/30, 604/31, 604/33, 604/65, 604/67, 604/93.01, 604/246, 604/249, 604/523, D24/119, 424/422, 424/423, 424/424, 424/425
• US Class Current: 604/891.1
• CPC Class Codes: A61M 2205/0266 Shape memory materials
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/14276 specially adapted for implantation
• CPC Class Codes: A61M 5/16813 by controlling the degree of opening of the flow line
• CPC Class Codes: A61N 1/0568 with drug delivery

Abstract

A medical delivery system for delivering a fluid to a desired location within a body that includes a first member having an aperture, and a second member adapted to be positioned over the first member. The fluid to be delivered is contained within a fluid storage device, formed by at least one of the first member and the second member. The medical delivery system includes means for repositioning the first member relative to the second member between a first state preventing passage of the fluid through the aperture and a second state enabling passage of the fluid outward from the fluid storage device through the aperture.

Claims

1. A medical delivery system for delivering a fluid to a desired location within a body, comprising:

a first cylindrical member formed by a first cylindrical member wall and having an aperture positioned along and extending through the first cylindrical member wall;

a second cylindrical member formed by a second cylindrical wall and having a diameter greater than the first cylindrical member, the first cylindrical member positioned within the second cylindrical member;

a stimulus delivery device delivering a stimulus for repositioning the first cylindrical member relative to the second cylindrical member between a first state wherein the first cylindrical member is positioned within the second cylindrical member so that the second cylindrical member wall extends over a portion of the first cylindrical member wall including the aperture to prevent passage of the fluid through the aperture and a second state wherein the first cylindrical member is positioned within the second cylindrical member so that the second cylindrical member wall extends over a portion of the first cylindrical member wall that does not include the aperture to enable passage of the fluid through the aperture; and

a pressure sensing device communicatively coupled to the stimulus delivery device, the pressure sensing device adapted to sense pressure and generate a pressure feedback signal, wherein the stimulus delivery device repositions the first member relative to the second member in response to the pressure feedback signal.