Apparatus and method for preventing free flow in an infusion line
First Claim
Patent Images
1. An apparatus for preventing free flow through an infusion set, the apparatus comprising:
- an infusion set formed of flexible tubing, the infusion set having a proximal portion and a distal portion; and
an occluder disposed in the infusion set between the proximal portion and the distal portion for selectively preventing flow of liquid through the infusion set, the occluder comprising a generally rigid cylinder.
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Accused Products
Abstract
An apparatus and method for preventing free flow through an infusion set utilizes an occluder disposed within the infusion set to selectively prevent flow therethrough. The occluder may be responsive to a pressure differential within the infusion set or may respond to compression of the infusion set. When a pair of occluders are used in sequence, an in-line pump may be formed.
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Citations
39 Claims
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1. An apparatus for preventing free flow through an infusion set, the apparatus comprising:
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an infusion set formed of flexible tubing, the infusion set having a proximal portion and a distal portion; and
an occluder disposed in the infusion set between the proximal portion and the distal portion for selectively preventing flow of liquid through the infusion set, the occluder comprising a generally rigid cylinder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for selectively preventing free flow through an infusion set, the apparatus comprising:
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an infusion set comprising a single, elongate piece of tubing having a proximal portion and a distal portion; and
an occluder positioned within the tubing of the infusion set so as to divide the infusion set into the proximal portion and the distal portion, the occluder comprising a valve being configured to substantially eliminate flow of fluid from the proximal portion of the infusion set to the distal portion while pressure within the proximal portion remains below a predetermined threshold, while allowing flow of fluid from the proximal portion to the distal portion when pressure in the proximal portion exceeds a predetermined threshold. - View Dependent Claims (12)
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13. An apparatus for selectively preventing free flow through an infusion set, the apparatus comprising:
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an infusion set comprising an elongate piece of tubing having a proximal portion and a distal portion, the infusion set being formed from a resilient material which expands responsive to pressure within the tubing;
an occluder positioned within the tubing of the infusion set so as to divide the infusion set into the proximal portion and the distal portion, the occluder being configured to selectively prevent flow of liquid from the proximal portion of the infusion set to the distal portion, and means for applying force to the infusion set adjacent the occluder to thereby form a flow channel between the occluder and the infusion set to allow fluid flow past the occluder, wherein the means for applying force comprises an actuator configured for selectively engaging the infusion set. - View Dependent Claims (14)
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15. An apparatus for preventing free flow through an infusion set, the apparatus comprising:
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an infusion set formed of an expandible tubing, the infusion set having a proximal portion and a distal portion; and
a solid, bullet-shaped or cylindrical occluder disposed in the infusion set between the proximal portion and the distal portion for selectively preventing flow of liquid through the infusion set, such that flow is not allowed from the proximal portion to the distal portion unless pressure in the proximal portion exceeds a predetermined threshold. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. An apparatus for selectively preventing free flow through an infusion set, the apparatus comprising:
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an infusion set comprising an elongate piece of tubing having a proximal portion and a distal portion, the infusion set being formed from a resilient material which radially expands responsive to pressure within the tubing; and
a bullet-shaped occluder positioned within the tubing of the infusion set so as to divide the infusion set into the proximal portion and the distal portion, the occluder being configured to substantially eliminate flow of liquid from the proximal portion of the infusion set to the distal portion while pressure within the proximal portion remains below a predetermined threshold, while allowing flow of liquid from the proximal portion to the distal portion when pressure in the proximal portion exceeds a predetermined threshold. - View Dependent Claims (24, 25, 26, 27)
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28. An apparatus for selectively preventing free flow through an infusion set, the apparatus comprising:
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an infusion set comprising an elongate piece of resilient tubing having a proximal portion and a distal portion; and
an occluder positioned within the tubing of the infusion set so as to divide the infusion set into the proximal portion and the distal portion, the occluder having a cylindrical or bullet shape and comprising a valve being configured to substantially eliminate flow of fluid from the proximal portion of the infusion set to the distal portion while pressure within the proximal portion remains below a predetermined threshold, while allowing flow of fluid from the proximal portion to the distal portion when pressure in the proximal portion exceeds a predetermined threshold. - View Dependent Claims (29, 30)
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31. An apparatus for selectively preventing free flow through an infusion set, the apparatus comprising:
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an infusion set comprising an elongate piece of tubing having a proximal portion and a distal portion, the infusion set being formed from a resilient material which expands responsive to pressure within the tubing;
an occluder positioned within the tubing of the infusion set so as to divide the infusion set into the proximal portion and the distal portion, the occluder being configured to selectively prevent flow of liquid from the proximal portion of the infusion set to the distal portion;
a pump having a channel disposed therein for receiving the infusion set; and
at least one engagement surface for formed on the pump for applying force to the infusion set against the occluder to thereby form a flow channel between the occluder and the infusion set to allow fluid flow past the occluder. - View Dependent Claims (32, 33, 34, 35, 36)
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37. A device for regulating fluid flow comprising:
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an infusion set having an elongate tube far carrying fluid to a patient; and
and an occluder disposed in the infusion set; and
wherein the infusion set comprises at least one projection for preventing distal advancement of the occluder in the infusion set. - View Dependent Claims (38)
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39. A device for regulating fluid flow comprising:
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an infusion set having an elongate tube for carrying fluid to a patient; and
and an occluder disposed in the infusion set; and
wherein the infusion set comprises a restriction in the elongate tube for preventing distal advancement of the occluder in the infusion set.
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Specification