Infusion Pump Device

• US 20150112265A1
• Filed: 10/16/2014
• Published: 04/23/2015
• Est. Priority Date: 10/17/2013
• Status: Active Grant

• Current Assignee: Micrel Medical Devices S.A.
• Original Assignee: Micrel Medical Devices S.A.
• Inventors: Tsoukalis, Achilleas
• Granted Patent: US 10,058,652 B2
• Time in Patent Office: Days
• US Class Current: 604/151
• CPC Class Codes: A61M 2005/1623 Details of air intake
• CPC Class Codes: A61M 2005/1657 Filter with membrane, e.g. membrane, flat sheet type infusion filter
• CPC Class Codes: A61M 2005/16868 Downstream occlusion sensors
• CPC Class Codes: A61M 2005/16872 Upstream occlusion sensors
• CPC Class Codes: A61M 2205/215 Tilt detection, e.g. for warning or shut-off
• CPC Class Codes: A61M 2205/7536 allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes
• CPC Class Codes: A61M 2206/22 eliminating pulsatile flows, e.g. by the provision of a dampening chamber
• CPC Class Codes: A61M 5/14232 Roller pumps
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/155 pressurised by gas introduced into the reservoir
• CPC Class Codes: A61M 5/162 Needle sets, i.e. connections by puncture between reservoir and tube ; Connections between reservoir and tube in jet-action syringes A61M5/30; connectors for tubes having sealed ends and a needle for piercing them A61M39/14
• CPC Class Codes: A61M 5/16822 by controlling air intake into infusion reservoir needle sets with air inlet A61M5/162
• CPC Class Codes: A61M 5/16854 by monitoring line pressure
• CPC Class Codes: A61M 5/365 Air detectors A61M5/1684 takes precedence; in extracorporeal blood circuits A61M1/3626
• CPC Class Codes: F04B 13/00 Pumps specially modified to deliver fixed or variable measured quantities
• CPC Class Codes: F04B 43/1253 by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing

Abstract

An infusion pump device comprises a pumping means having a fluid inlet which is adapted to be connected to a vial for taking fluid out of the vial and a fluid outlet which is adapted to be connected to an infusion catheter, and a controlling means which is adapted to be connected to the vial and to control pressure inside the vial so as to avoid occurrence of underpressure at the fluid inlet.

Claims

1. An infusion pump device comprising:

a pumping means having a fluid inlet which is adapted to be connected to a vial for taking fluid out of the vial and a fluid outlet which is adapted to be connected to an infusion catheter, and

a controlling means which is adapted to be connected to the vial and to control pressure inside the vial so as to avoid occurrence of underpressure at the fluid inlet.

2. The device according to claim 1, wherein the controlling means comprises a spike or a needle which is adapted to puncture a bung closing the vial.

3. The device according to claim 2, wherein the controlling means comprises an air line having an air inlet and an air outlet, wherein the air outlet is adapted to be connected to the vial for delivering air taken up through the air inlet into the vial.

4. The device according to claim 3, wherein the needle is coupled to the air outlet.

5. The device according to claim 3, wherein the air line comprises a filter, preferably a hydrophobic membrane filter.

6. The device according to claim 5, wherein the filter is provided at the air inlet.

7. The device according to claim 3, wherein the pumping means is a rotary peristaltic pump means comprising a stationary flexible, preferably resilient, first tubing which includes an inlet defining the fluid inlet and an outlet defining the fluid outlet and is provided between the fluid inlet and the fluid outlet with a bent portion having an essentially part-cycle, preferably half-cycle, form, and a rotor which is provided with engagement elements for locally engaging the bent portion of the first tubing so as to squeeze it during rotation for a pumping action, and the controlling means comprises a stationary flexible, preferably resilient, second tubing which includes an inlet defining the air inlet and an outlet defining the air outlet so as to define the air line and is provided between the air inlet and the air outlet with a bent portion having an essentially part-cycle, preferably half-cycle, form, wherein the rotor is provided with engagement elements for locally engaging the bent portion of the second tubing so as to squeeze it during rotation.

8. The device according to claim 7, wherein the first tubing and the second tubing are arranged one above the other.

9. The device according to claim 8, wherein the inlets of the first and second tubings and the outlets of the first and second tubings each are arranged one above the other.

10. The device according to claim 7, wherein the cross-section of the second tubing is larger than, preferably essentially twice as, the cross-section of the first tubing.

11. The device according to claim 7, wherein the engagement elements of the rotor are adapted for simultaneously engaging both the first and second tubings.

12. The device according to claim 1, further comprising a casing or frame to which the pumping means and the controlling means are mounted, wherein the casing or frame includes further means for mounting at least a vial so that the controlling means and the fluid inlet of the pumping means are simultaneously connected to the vial through a single movement of the vial when being mounted.

13. The device according to claim 1, further comprising sensor means adapted to monitor the air pressure in the vial and/or the flow of fluid or the occurrence of any blockage and/or to monitor the occurrence of air bubbles within the pumping means and/or the infusion catheter and/or to monitor the orientation of the vial so that the vial is assured to be arranged in an essentially vertical orientation.

14. The device according to claim 1, wherein the fluid inlet comprises a spike or a needle which is adapted to puncture a bung closing the vial.

15. An infusion pump device comprising:

a pumping means having a fluid inlet which is adapted to be connected to a vial for taking fluid out of the vial and a fluid outlet which is adapted to be connected to an infusion catheter,

wherein the pumping means is a rotary peristaltic pump means comprising a stationary flexible, preferably resilient, first tubing which includes an inlet portion defining the fluid inlet and an outlet portion defining the fluid outlet and is provided between both the inlet and outlet portions with a bent portion having an essentially part-cycle, preferably half-cycle, form, and a rotor which is provided with engagement elements for locally engaging the bent portion of the first tubing so as to squeeze it during rotation for a pumping action, wherein the cross-section of the outlet portion of the first tubing is smaller than the cross-section of at least the bent portion of the first tubing.

16. The device according to claim 15, further comprising a constricting element which engages a wall portion of the outlet portion of the first tubing for reducing its cross-section.

17. The device according to claim 16, wherein the rotor comprises an essentially cylindrical body and the constricting element is positioned at an inner side of the outlet portion of the first tubing facing the rotor and comprises a part-cyclic edge extending adjacent and essentially parallel to the periphery of the body of the rotor.

18. The device according to claim 16, wherein the constricting element at least at a portion engaging the wall portion of the outlet portion of the first tubing is made of elastic material.

19. An infusion pump device comprising:

a pumping means having a fluid inlet which is adapted to be connected to a vial for taking fluid out of the vial and a fluid outlet which is adapted to be connected to an infusion catheter, wherein the pumping means is a rotary peristaltic pump means comprising a stationary flexible, preferably resilient, first tubing which includes an inlet portion defining the fluid inlet and an outlet portion defining the fluid outlet and is provided between both the inlet and outlet portions with a bent portion having an essentially part-cycle, preferably half-cycle, form, and a rotor which is provided with engagement elements for locally engaging the bent portion of the first tubing so as to squeeze it during rotation for a pumping action, wherein the cross-section of the inlet portion of the first tubing is larger than the cross-section of at least a major portion of the bent portion of the first tubing.

20. The device according to claim 19, wherein the cross-section of an upstream portion of the bent portion of the first tubing following the inlet portion of the first tubing in direction of rotation of the rotor and extending along a small number of degrees, preferably about 5 to 7 degrees, has essentially the same amount as the cross-section of the inlet portion of the first tubing.