Electronic infusion device and novel roller clamp holden therefor
First Claim
1. A device for infusing IV fluids into a patient through an IV set of the type including an IV tube and associated clamp having mounted thereon a manually operable crimping element movable on the clamp selectively between an open positioning which it permits the flow of fluid through the tube and a closed position in which it compresses the tube and blocks the flow of fluid therethrough, comprisinga housing having therein an IV tube channel and a mechanism for infusing fluid through an IV tube seated in said channel and operatively connected to said mechanism,a clamp holder removably secured in said housing, and having therein a recess opening on the exterior of said housing, and configured removably to support therein the clamp of an IV set with the IV tube thereof seated in said channel and operatively connected to said infusing mechanism, and with said crimping element facing outwardly of said opening to permit manual operation thereof,first seeing means on said holder for detecting the presence of said clamp when the latter is supported in said holder,second sensing means on said holder operative, when said clamp is supported in said recess, to detect when said crimping element of the clamp is in its closed position, andsafety means on said housing controlled by said sensing means and operable to enable said IV tube to be disconnected from said mechanism only when said crimping element is in its closed position.
1 Assignment
0 Petitions
Accused Products
Abstract
A holder for an IV tube roller clamp is removably secured in the housing of an electronic infusion device, and has in opposite ends thereof a pair of photo-electric devices, one of which detects when the roller of the clamp is in its tube opening position, and the other detects when the roller is in tube closing position. A lever is pivotal on the housing between a closed position in which it operatively connects the IV tube to a pump unit in the housing, and an open position in which it permits removal of the IV tube from the unit. The spring-loaded armature of a solenoid prevents the lever from being opened until the solenoid coil is energized, and the photo-electric devices prevent the solenoid coil from being energized until the roller is in its tube closing position. When closed, the lever overlies part of the tube channel in which the IV tube is seated and also shifts a pressure plate in the pump unit to a position in which a lip thereon overlies another portion of said channel.
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Citations
20 Claims
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1. A device for infusing IV fluids into a patient through an IV set of the type including an IV tube and associated clamp having mounted thereon a manually operable crimping element movable on the clamp selectively between an open positioning which it permits the flow of fluid through the tube and a closed position in which it compresses the tube and blocks the flow of fluid therethrough, comprising
a housing having therein an IV tube channel and a mechanism for infusing fluid through an IV tube seated in said channel and operatively connected to said mechanism, a clamp holder removably secured in said housing, and having therein a recess opening on the exterior of said housing, and configured removably to support therein the clamp of an IV set with the IV tube thereof seated in said channel and operatively connected to said infusing mechanism, and with said crimping element facing outwardly of said opening to permit manual operation thereof, first seeing means on said holder for detecting the presence of said clamp when the latter is supported in said holder, second sensing means on said holder operative, when said clamp is supported in said recess, to detect when said crimping element of the clamp is in its closed position, and safety means on said housing controlled by said sensing means and operable to enable said IV tube to be disconnected from said mechanism only when said crimping element is in its closed position.
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14. In a fluid infusion device of the type having a housing containing a mechanism for infusing fluid through an IV tube operatively connected to said mechanism, the improvement comprising,
an IV tube clamp holder having a clamp holding recess in one end thereof, means releasably securing said holder in said housing with said clamp holding recess opening on the exterior of said housing, means in said holder for releasably supporting in said recess an IV set, said set comprising an IV tube clamp having thereon a tube clamping element movable between the opening and tube closing positions with respect to a portion of an IV the that extends through said clamp for connection to said mechanism, first sensing means on said holder for detecting when said clamping element is in its tube closing position, and second sensing means on said holder for detecting when said clamping element is in its tube opening position.
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18. An infusion device for infusing IV fluids into a patient through an IV set of the type including an IV tube and associated clamp having a crimping element movable thereon selectively to a closed position in which it blocks the flow of fluid through said tube, comprising
a housing having therein an IV tube channel and a peristaltic pump unit having a section of said tube channel extending therethrough, a clamp holder removably secured in said housing, and having therein a recess configured removably to support therein the clamp of an IV set with the IV tube thereof seated in said channel and with a portion of the IV tube disposed in operative registry with said pump nit, a pressure plate mounted in said pump unit adjacent one side of said channel section for movement toward the opposite side of said channel section to an advanced position in which it operatively connects said registering portion of said tube to said pump unit, and for movement away from said opposite side of said channel section to a retracted position to disconnect said registering portion of said tube from said pump unit, channel blocking means mounted on said pressure plate for movement thereby to a closed position in which said blocking means overlies and covers said channel section when said plate is in its advanced position, and to an open position in which said blocking means uncovers said channel section when said plate is moved to its retracted position, electronic sensing means on said holder operative, when said clamp is supported in said recess to detect when said crimping element of the clamp is in its closed position, and safety means on said housing operative to enable said pressure plate to be moved to its retracted position only when said crimping element is detected by said sensing means to be in its closed position.
Specification