Infusion Pump Device
First Claim
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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, anda 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.
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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.
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Citations
20 Claims
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1. An infusion pump device comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An infusion pump device comprising:
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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. - View Dependent Claims (16, 17, 18)
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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. - View Dependent Claims (20)
Specification