Device for administering of medication in fluid form

• US 8,945,064 B2
• Filed: 08/21/2008
• Issued: 02/03/2015
• Est. Priority Date: 02/18/2002
• Status: Expired due to Fees

• Current Assignee: CeQur SA
• Original Assignee: CeQur SA
• Inventors: Gravesen, Peter, Rasmussen, Per Brandt, Dirac, Holger
• Primary Examiner(s): Vu, Quynh-Nhu H
• Assistant Examiner(s): LEE, BRANDY SCOTT
• Application Number:
  US12/195,791
• Publication Number:
  US 20090054867A1
• Time in Patent Office: 2,357 Days
• Field of Search: 604/506, 604/150, 604/500, 604/522, 604/891.1, 604/890.1, 604/175, 604/9, 604/151, 604/123, 604/67
• US Class Current: 604/183
• CPC Class Codes: A61M 2005/1405 Patient controlled analgesia [PCA]
• CPC Class Codes: A61M 2205/0244 Micromachined materials, e.g. made from silicon wafers, microelectromechanical systems [MEMS] or comprising nanotechnology
• CPC Class Codes: A61M 2205/0294 Piezoelectric materials
• CPC Class Codes: A61M 2205/3306 Optical measuring means
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• CPC Class Codes: A61M 5/141 with capillaries for restricting fluid flow
• 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 5/148 flexible, e.g. independent bagsA61M5/155 takes precedence
• CPC Class Codes: A61M 5/152 pressurised by contraction of elastic reservoirs containers for dispensing contents by contraction of an elastic bag provided therein, in general B65D83/0061
• CPC Class Codes: A61M 5/16804 Flow controllers
• CPC Class Codes: A61M 5/16813 by controlling the degree of opening of the flow line
• CPC Class Codes: A61M 5/16854 by monitoring line pressure
• CPC Class Codes: A61M 5/16881 Regulating valves on-off valves, e.g. clamps A61M39/28

Abstract

An infusion device for continuous infusion of medication is disclosed, in which infusion is controlled over two separate fluid communications. The infusion is in each fluid communication controlled by restricting means and valve means, and one of the fluid communications further contains a holding device for bolus rate of infusion. The device comprises a flow regulating device comprising a passage defined by at least a first element and a second element, wherein at least one of the first and second element is a primary deformable element adapted to be elastically deformed so as to change the cross sectional area of the passage. Furthermore the device comprises a container for storage and supply of a medication in fluid form, said container comprising a first and a second chamber being arranged relatively to each other so that when volume of the first chamber increases the volume of the second chamber decreases.

Claims

1. An external disposable infusion device adapted to administer a fluid based medication to a patient, the device comprising:

a pressurized first storage compartment comprising a substantially constant pressure source;

a first fluid path comprising two series connected capillaries in fluidic communication with the first storage compartment;

a detection device for monitoring a pressure of a fluid in the first fluid path between the two series connected capillaries, wherein the detection device comprises a pressure sensor comprising a membrane;

a second fluid path in fluidic communication with the first storage compartment;

a second storage compartment in fluidic communication with the second fluid path; and

an infusion device outlet in fluidic communication with the first fluid path and the second fluid path, wherein the first fluid path and the second fluid path form individual separate fluid paths from the first storage compartment to the infusion device outlet, wherein the first storage compartment comprises a first storage compartment outlet, and wherein each of the first fluid path and the second fluid path are in fluidic communication with the first storage compartment via the first storage compartment outlet,

wherein the infusion device outlet is adapted to be in fluidic communication with a subcutaneous cannula in a body of the patient.

2. The infusion device of claim 1 wherein the pressure sensor further comprises a deflection detector for detecting a deflection of the membrane.

3. The infusion device of claim 1 further comprising a flow restrictor in the second fluid path upstream of the second storage compartment.

4. The infusion device of claim 1 further comprising a detection device for monitoring a flow of a fluid in the second fluid path.

5. The infusion device of claim 4 wherein the detection device comprises a pressure sensor.

6. The infusion device of claim 5 wherein the pressure sensor comprises a membrane.

7. The infusion device of claim 6 wherein the pressure sensor further comprises a deflection detector for detecting a deflection of the membrane.

8. The infusion device of claim 1 further comprising a valve in the first fluid path, upstream of the two series connected capillaries.

9. The infusion device of claim 8 wherein the valve is adjustable.

10. The infusion device of claim 1 further comprising a valve in the second fluid path, downstream of the second storage chamber.

11. The infusion device of claim 10 wherein the valve is adjustable.

12. An external disposable infusion device adapted to administer a fluid based medication to a patient, the device comprising:

a pressurized first storage compartment comprising a substantially constant pressure source for containing a fluid wherein the first storage compartment comprises a first storage compartment outlet;

a first fluid path comprising two series connected capillaries in fluidic communication with the first storage compartment via the first storage compartment outlet, the first fluid path comprising a detection device for monitoring a pressure of the fluid in the first fluid path between the two series connected capillaries, wherein the detection device comprises a pressure sensor comprising a membrane;

a second fluid path in fluidic communication with the first storage compartment via the first storage compartment outlet, the second fluid path comprising a second storage compartment in fluidic communication with the second fluid path, wherein the fluid flows from the first storage compartment to the second storage compartment via the second fluid channel; and

a common outlet in fluidic communication with the first fluid path channel and the second fluid path channel,

wherein the common outlet is adapted to be in fluidic communication with a subcutaneous cannula in a body of the patient.

13. The infusion device of claim 12, further comprising a second pressurized source, wherein the second pressurized source defines the second storage compartment for storage of the fluid.