Syringe assist for infusion pump
First Claim
1. A syringe assist system for preventing vacuum stall within an infusion pump cooperating with a tube assembly which forms a fluid connection between a syringe and a patient, said syringe defined by a barrel portion filled with fluid medication and a syringe plunger with a handle attached thereto inserted within said barrel portion, wherein the infusion pump operates to suction the fluid medication from the syringe barrel, comprising:
- a lock box for housing said infusion pump;
a plunger housed within said lock box which imparts a compressive force urging the syringe plunger into the syringe barrel to overcome said vacuum stall resulting from said infusion pump suctioning fluid from said syringe barrel;
a handle mating groove formed on an interior wall of said lock box for securing said handle of said syringe relative to said lock box;
wherein said plunger includes a cocker, a cradle, and a base member; and
wherein said cocker further includes a cocker locking member attached thereto cooperating with a wedge locking member extruded from said lock box to selectively prevent movement thereof along said base member.
4 Assignments
0 Petitions
Accused Products
Abstract
A syringe assist device for preventing vacuum stall in an infusion pump which extracts fluid medication from a conventional syringe. The device is a plunger housed within a front case and a back case. The plunger is comprised of a cocker, a cradle, and a base member. The cocker and cradle are compressively retained by a spring spanning therebetween. The cocker includes a locking member which cooperates with a wedge type locking member defined by the back case to prevent movement along the base member. The cradle includes a syringe barrel compression member. In its unlocked position, the cocker and the cradle slide against the base member in unison, while in its locked position, only the cradle slides against the base member, thereby enabling a unidirectional compressive force upon the syringe. By this compressive force, the vacuum created within the syringe during infusion is eliminated, thereby eliminating vacuum stall.
46 Citations
18 Claims
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1. A syringe assist system for preventing vacuum stall within an infusion pump cooperating with a tube assembly which forms a fluid connection between a syringe and a patient, said syringe defined by a barrel portion filled with fluid medication and a syringe plunger with a handle attached thereto inserted within said barrel portion, wherein the infusion pump operates to suction the fluid medication from the syringe barrel, comprising:
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a lock box for housing said infusion pump; a plunger housed within said lock box which imparts a compressive force urging the syringe plunger into the syringe barrel to overcome said vacuum stall resulting from said infusion pump suctioning fluid from said syringe barrel; a handle mating groove formed on an interior wall of said lock box for securing said handle of said syringe relative to said lock box; wherein said plunger includes a cocker, a cradle, and a base member; and wherein said cocker further includes a cocker locking member attached thereto cooperating with a wedge locking member extruded from said lock box to selectively prevent movement thereof along said base member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A syringe assist plunger for imparting a compressive force upon a syringe cooperating with an infusion pump, comprising:
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a cocker having a cocker elongate cradle mating section, a cocker base member mating section disposed thereunder, and a cocker locking member extending generally outwardly from said cradle mating section; a cradle having a cradle elongate cocker mating section and a cradle elongate base member mating section disposed thereunder, and a syringe barrel compression member extending outwardly from said cradle mating section; and a base member having a pair of opposed longitudinal sides and a pair of opposed lateral sides, and a pair of cocker/cradle mating members extending along respective ones of opposed longitudinal sides. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification