Infusion device pump

• US 20070299408A1
• Filed: 02/12/2007
• Published: 12/27/2007
• Est. Priority Date: 03/16/2006
• Status: Active Grant

• Current Assignee: Calibra Medical, Inc. (CeQur SA)
• Original Assignee: Seattle Medical Technologies
• Inventors: Hawkins, Daniel, Alferness, Clifton, Adams, John
• Granted Patent: US 8,758,308 B2
• Time in Patent Office: Days
• US Class Current: 604/250
• CPC Class Codes: A61M 2005/1405 Patient controlled analgesia [PCA]
• CPC Class Codes: A61M 2005/1426 with means for preventing access to the needle after use
• CPC Class Codes: A61M 2005/1585 Needle inserters
• CPC Class Codes: A61M 2005/1587 suitable for being connected to an infusion line after insertion into a patient
• CPC Class Codes: A61M 2025/0266 using pads, patches, tapes or the like
• CPC Class Codes: A61M 5/1408 in parallel, e.g. manifolds, sequencing valves access sites A61M39/02; tube connectors A61M39/10
• CPC Class Codes: A61M 5/14248 of the skin patch type
• CPC Class Codes: A61M 5/1452 pressurised by means of pistons
• CPC Class Codes: A61M 5/14526 the piston being actuated by fluid pressure
• CPC Class Codes: A61M 5/1454 spring-actuated, e.g. by a clockwork
• CPC Class Codes: A61M 5/16881 Regulating valves on-off valves, e.g. clamps A61M39/28

Abstract

A disposable infusion device comprises a base arranged to adhere to a patient'"'"'s skin, a cannula arranged to extend from the base to beneath the patient'"'"'s skin to deliver a liquid medicament to the patient, and a source arranged to provide the cannula with a liquid medicament. The source includes a compressible tube that pumps the liquid medicament to the cannula.

Claims

1. A disposable infusion device comprising:

a base arranged to adhere to a patient'"'"'s skin;

a cannula arranged to extend from the base to beneath the patient'"'"'s skin to deliver a liquid medicament to the patient; and

a source arranged to provide the cannula with a liquid medicament, the source including a pump that pumps the liquid medicament to the cannula, the pump comprising a compressible tube.

2. The device of claim 1, wherein the source further includes a reservoir that holds the liquid medicament and wherein the compressible tube communicates with the reservoir.

3. The device of claim 1, wherein the source further comprises a tube compressor that compresses a length of the compressible tube to pump the liquid medicament to the cannula.

4. The device of claim 3, wherein the tube compressor comprises a strap fixed to an end of the compressible tube and extending along the compressible tube.

5. The device of claim 4, wherein the tube compressor further includes an actuator that pulls the strap against the compressible tube to compress the compressible tube.

6. The device of claim 5, wherein the tube compressor further includes a disk having a circumferential surface that supports the compressible tube and wherein the actuator is arranged to pull the strap and compress the compressible tube against the disk circumference.

7. The device of claim 5, further including a volume adjuster that adjusts the volume of liquid medicament pumped to the cannula with each actuation of the actuator.

8. The device of claim 7, wherein the tube compressor further includes a disk having a circumferential surface that supports the compressible tube, wherein the actuator is arranged to pull the strap and compress the compressible tube against the disk circumference, wherein the volume adjuster comprises a groove within the circumferential surface of the disk, the groove having a depth that increases along the disk circumference, the groove being arranged to receive the compressible tube, and the disk being rotatable to vary the length of the groove receiving the compressible tube to adjust the volume of liquid medicament pumped to the cannula with each actuation of the actuator.

9. The device of claim 8, wherein the disk is arranged so that as the length of the groove receiving the compressible tube decreases, the volume of liquid medicament pumped to the cannula increases.

10. The device of claim 3, wherein the source further includes a reservoir that holds the liquid medicament and wherein the compressible tube communicates with the reservoir.

11. The device of claim 10, wherein the tube compressor comprises a strap fixed to an end of the compressible tube and extending along the compressible tube.

12. The device of claim 11, wherein the tube compressor further includes an actuator that pulls the strap against the compressible tube to compress the compressible tube.

13. The device of claim 12, wherein the tube compressor further includes a disk having a circumferential surface that supports the compressible tube and wherein the actuator is arranged to pull the strap and compress the compressible tube against the disk circumference.

14. The device of claim 12, further including a volume adjuster that adjusts the volume of liquid medicament pumped to the cannula with each actuation of the actuator.

15. The device of claim 14, wherein the tube compressor further includes a disk having a circumferential surface that supports the compressible tube, wherein the actuator is arranged to pull the strap and compress the compressible tube against the disk circumference, wherein the volume adjuster comprises a groove within the circumferential surface of the disk, the groove having a depth that increases along the disk circumference, the groove being arranged to receive the compressible tube, and the disk being rotatable to vary the length of the groove receiving the compressible tube to adjust the volume of liquid medicament pumped to the cannula with each actuation of the actuator.

16. The device of claim 15, wherein the disk is arranged so that as the length of the groove receiving the compressible tube decreases, the volume of liquid medicament pumped to the cannula increases.

17. A disposable infusion device comprising:

a base arranged to adhere to a patient'"'"'s skin;

a cannula arranged to extend from the base to beneath the patient'"'"'s skin to deliver a liquid medicament to the patient; and

a source arranged to provide the cannula with a liquid medicament, the source including a reservoir that contains the liquid medicament and a pump that pumps the liquid medicament from the reservoir to the cannula, the pump comprising a compressible tube and a tube compressor that compresses a length of the compressible tube to pump the liquid medicament to the cannula.

18. The device of claim 17, wherein the tube compressor is adjustable for varying the length of the compressible tube that is compressed.

19. The device of claim 18, wherein the tube compressor further includes a disk having a circumferential surface that supports the compressible tube and wherein the actuator is arranged to pull the strap and compress the compressible tube against the disk circumference.

20. The device of claim 19, wherein the disk circumferential surface includes a groove arranged to receive the compressible tube, and wherein the length of the groove receiving the compressible tube is adjustable for varying the length of the compressible tube that is compressed.