Device for administering of medication in fluid form

• US 7,517,335 B2
• Filed: 02/18/2003
• Issued: 04/14/2009
• Est. Priority Date: 02/18/2002
• Status: Expired due to Fees

• Current Assignee: CeQur SA
• Original Assignee: Cequr Aps
• Inventors: Gravesen, Peter, Dirac, Holger, Rasmussen, Per Brandt
• Primary Examiner(s): Sirmons; Kevin C
• Assistant Examiner(s): Schell; Laura C
• Application Number:
  US10/503,845
• Publication Number:
  US 20050165384A1
• Time in Patent Office: 2,247 Days
• Field of Search: 604/890.1, 604/891.1, 604/892.1, 604/131, 604/132, 604/65, 604/67, 604/93.01, 604150-154, 604246-250, 604/253, 251/61.1, 251/57, 251/4, 116/268, 116/264, 116/266, 73/17.1
• US Class Current: 604/132
• 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 farther contains a holding device for bolus rate of infusion for a short period. 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. A device for administering a medication in fluid form, said device comprising:

an outlet;

a storage means for storing a fluid;

first and second individual communications each of which being in fluid communication with said storage means and said outlet;

each communication comprising at least one flow restricting means for restricting a flow, wherein said restricting means has no capability to stop the flow completely;

at least one valve arranged in fluid-connection to at least one of said flow restricting means; and

wherein the device downstream of said communications further comprises a container for storage and supply of a medication in fluid form, said container comprising a fluid chamber and a medication chamber being arranged relative to each other so that when the volume of the fluid chamber increases the volume of the medication chamber decreases.

2. The device according to claim 1, further comprising a holding compartment intermediate the storage means and the valve, said holding compartment being in fluid communication with said storage means through at least one of said flow restricting means.

3. The device according to claim 2, wherein each of the two individual communications comprises at least one valve.

4. The device according to claim 2, wherein said holding compartment comprises a chargeable accumulator adapted to be charged with fluid.

5. The device according to claim 1, further comprising means for pressurizing said storage means.

6. The device according to claim 1, further comprising at least one detection device adapted to supervise the flow in the restricting means.

7. The device according to claim 6, wherein the detection device is adapted to detect a pressure difference between a supply-side and a discharge-side of the restricting means.

8. The device according to claim 1, wherein the at least one valve comprises:

a passage defined by at least a first element and a second element; and

wherein at least one of the first and second elements is adapted to be elastically deformed so as to change the cross sectional area of the passage.

9. The device according to claim 1, further comprising control means for controlling the administering of medication.

10. The device according to claim 9, wherein the control means comprises:

a first computer system with an operating system, the computer system comprising input means for collecting data in a first format, processing means for processing the data, output means for presenting data in a second format, and data storage means for storing a computer program.

11. The device according to claim 9, further comprising a holding device intermediate the storage means and the valve,

wherein the control means is adapted to control the storage means, the holding device, and at least one valve of the device for administration.

12. The device according to claim 11, wherein the computer program is adapted to control the steps of:

opening the valve in the second communication;

applying a pressure on the holding device so as to administer a bolus rate; and

closing the valve in the second communication.

13. The device according to claim 9, wherein a separate control unit operates the control means.

14. The device according to claim 13, wherein the control unit and the control means are adapted for wireless communication.

15. A device for supervising flow comprising:

a first chamber, a second chamber and a third chamber, the first chamber being separated from the second chamber by a first membrane and from a third chamber by a second membrane;

a first restricting means for restricting flow having a supply-side in fluid communication with the second chamber and a discharge-side in fluid communication with the first chamber; and

a second restricting means for restricting flow having a supply-side in fluid communication with the third chamber.

16. The device according to claim 15, wherein said first membrane and said second membrane are each adapted to move between a first position and a second position.

17. The device according to claim 16, wherein said first membrane defines a seal between the first chamber and the second chamber and said second membrane defines a seal between the second chamber and the third chamber.

18. The device according to claim 15, wherein at least one of the first and second membranes comprises an elastic material.

19. The device according to claim 15, further comprising means for detecting the position of said first and second membranes.