Infusion Pump and Method Which Inhibits Unintended Tubing Withdrawal
First Claim
1. An infusion pump for regulating the flow of medicinal fluid delivered through a delivery tube to a patient, the infusion pump having an internal occlusion clamp which occludes the delivery tube and prevents free flow of the fluid through the delivery tube when in an occluding position and which opens the delivery tube to allow the flow of fluid through the delivery tube when in a non-occluding position;
- the infusion pump further comprising;
a tubing channel in which a first portion of the delivery tube is located within the infusion pump;
an anvil located on one side of the tubing channel, the anvil having a restraint surface facing the tubing channel and against which the delivery tube is compressed and occluded when the occlusion clamp is in the occluding position;
a compression edge of the occlusion clamp which faces the tubing channel on the opposite side of the tubing channel from the restraint surface, the compression edge moving into adjacency with the restraint surface to compress and occlude the delivery tube between the compression edge and the restraint surface when the occlusion clamp is in the occluding position, the compression edge moving away from the restraint surface to open the delivery tube when the occlusion clamp is in the non-occluding position;
a blocking lip extending from the compression edge toward the restraint surface; and
at least one blocking projection extending from the restraint surface toward the compression edge; and
wherein;
the blocking lip overlaps the restraint surface and the blocking projection overlaps the compression edge to inhibit removal of the delivery tube from between the compression edge and the restraint surface when the occlusion clamp is in the occluding position.
1 Assignment
0 Petitions
Accused Products
Abstract
A delivery tube is inhibited from unintended withdrawal from an infusion pump which has an internal occlusion clamp that clamps the delivery tube to prevent the free flow of fluid through the tube, by overlapping a blocking lip from a compression edge of the occlusion clamp with a restraint surface of an anvil against which the tubing is compressed and by overlapping a blocking projection from the restraint surface with the compression edge. Inhibition is also achieved by positioning an obstruction protrusion adjacent to the compression edge and the blocking lip to resist the application of exterior physical force to force the occlusion clamp from an occluding position to a non-occluding position.
21 Citations
22 Claims
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1. An infusion pump for regulating the flow of medicinal fluid delivered through a delivery tube to a patient, the infusion pump having an internal occlusion clamp which occludes the delivery tube and prevents free flow of the fluid through the delivery tube when in an occluding position and which opens the delivery tube to allow the flow of fluid through the delivery tube when in a non-occluding position;
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the infusion pump further comprising; a tubing channel in which a first portion of the delivery tube is located within the infusion pump; an anvil located on one side of the tubing channel, the anvil having a restraint surface facing the tubing channel and against which the delivery tube is compressed and occluded when the occlusion clamp is in the occluding position; a compression edge of the occlusion clamp which faces the tubing channel on the opposite side of the tubing channel from the restraint surface, the compression edge moving into adjacency with the restraint surface to compress and occlude the delivery tube between the compression edge and the restraint surface when the occlusion clamp is in the occluding position, the compression edge moving away from the restraint surface to open the delivery tube when the occlusion clamp is in the non-occluding position; a blocking lip extending from the compression edge toward the restraint surface; and at least one blocking projection extending from the restraint surface toward the compression edge; and
wherein;the blocking lip overlaps the restraint surface and the blocking projection overlaps the compression edge to inhibit removal of the delivery tube from between the compression edge and the restraint surface when the occlusion clamp is in the occluding position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An infusion pump for regulating the flow of medicinal fluid delivered through a delivery tube to a patient, the infusion pump having an internal occlusion clamp which occludes the delivery tube and prevents free flow of the fluid through the delivery tube when in an occluding position and which opens the delivery tube to allow the flow of fluid through the delivery tube when in a non-occluding position;
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the infusion pump further comprising; a tubing channel in which a first portion of the delivery tube is located within the infusion pump; an anvil located on one side of the tubing channel, the anvil having a restraint surface facing the tubing channel and against which the delivery tube is compressed and occluded when the occlusion clamp is in the occluding position; a compression edge of the occlusion clamp which faces the tubing channel on the opposite side of the tubing channel from the restraint surface, the compression edge moving into adjacency with the restraint surface to compress and occlude the delivery tube between the compression edge and the restraint surface when the occlusion clamp is in the occluding position, the compression edge moving away from the restraint surface to open the delivery tube when the occlusion clamp is in the non-occluding position; a front panel having an opening from which a portion of the compression edge extends outward from the front panel; and an obstruction protrusion adjacent to the opening and extending outward from the front panel a distance at least equal to the distance which the portion of the compression edge extends outward from the front panel, the obstruction protrusion resisting the application of exterior physical force on the portion of the compression edge to inhibit unintended forced movement of the occlusion clamp from the occluding position toward the non-occluding position. - View Dependent Claims (15)
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16. A method of preventing free flow of fluid through a delivery tube of an infusion tubing set used with an infusion pump to regulate the flow of fluid delivered to a patient, the infusion pump having an internal occlusion clamp having an occluding position for occluding a first portion of the delivery tube located within a tubing channel of the infusion pump when the tubing channel is accessible to a user of the infusion pump, the internal occlusion clamp also having a non-occluding position for opening the delivery tube to fluid movement through the delivery tube when the first portion of the delivery tube is not accessible to the user of the infusion pump, the method comprising:
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positioning the first portion of the delivery tube in the tubing channel between a restraint surface of an anvil of the infusion pump and a compression edge of the occlusion clamp; occluding the delivery tube by pinching the delivery tube between the restraint surface and the compression edge; and inhibiting removal of the delivery tube from between the restraint surface and the compression edge when the occlusion clamp is in the occluding position by extending a blocking lip from the compression edge across the delivery tube and overlapping the restraint surface with the blocking lip and by extending a blocking projection from the restraint surface across the delivery tube and overlapping the compression edge with the blocking projection. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification