Cassette assembly for syringe fill system
First Claim
1. A cassette assembly, comprising:
- a base manifold member including an elongate interior manifold flow passage;
multiple fluid feed inlets extending outwardly from the base manifold member and communicating with the elongate interior manifold flow passage via inlet passages containing check valves, the multiple inlets being configured for engagement with respective fluid supply containers; and
a syringe coupling mounted on the base manifold member, in fluid flow communication with the interior manifold flow passage to deliver fluid from the interior manifold flow passage to a syringe when coupled to the syringe coupling,the multiple fluid feed inlets comprising (i) a first fluid feed inlet configured for engagement with a first fluid supply container for dispensing a first fluid to the elongate interior manifold flow passage, and (ii) a second fluid feed inlet configured for engagement with a second fluid supply container for dispensing a second fluid to the elongate interior manifold flow passage, wherein the first fluid supply container is a container from which the first fluid is dispensable by exertion of pressure thereon,the syringe coupling being in fluid flow communication with the elongate interior manifold flow passage at a first end portion of the elongate interior manifold flow passage,the second fluid feed inlet being in communication with the elongate interior manifold flow passage at a second end portion of the elongate interior manifold flow passage opposite the first end portion of the elongate interior manifold flow passage,the first fluid feed inlet being in communication with the elongate interior manifold flow passage at an intermediate portion of the elongate interior manifold flow passage between the first end portion of the elongate interior manifold flow passage and the second end portion of the elongate interior manifold flow passage, andthe cassette assembly being configured for push dispensing of the first fluid from the first fluid supply container through the first fluid feed inlet to the intermediate portion of the elongate interior manifold flow passage, followed by pull dispensing of the second fluid from the second fluid supply container through the second fluid feed inlet to the second end portion of the elongate interior manifold flow passage so that the second fluid intermixes with the first fluid in the elongate manifold fill passage and purges the first fluid from the elongate manifold fill passage during syringe filling.
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Accused Products
Abstract
A syringe fill system is described, which is useful for filling syringes for dental anesthetic applications. The system incorporates capability for “push-pull”, “pull-push”, “push-push”, and “pull-pull” modes of operation, for loading syringes with compositions comprising multiple fluid components. A syringe fillable by such syringe fill systems is described, providing haptic and audible feedback to a user, to aid in administering precise amounts of therapeutic compositions. Also disclosed are cassette assemblies for use in such syringe fill systems. Such cassette assemblies may be formed of plastic and elastomeric materials of construction, as disposable or single-use components of the syringe fill system.
290 Citations
20 Claims
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1. A cassette assembly, comprising:
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a base manifold member including an elongate interior manifold flow passage;
multiple fluid feed inlets extending outwardly from the base manifold member and communicating with the elongate interior manifold flow passage via inlet passages containing check valves, the multiple inlets being configured for engagement with respective fluid supply containers; anda syringe coupling mounted on the base manifold member, in fluid flow communication with the interior manifold flow passage to deliver fluid from the interior manifold flow passage to a syringe when coupled to the syringe coupling, the multiple fluid feed inlets comprising (i) a first fluid feed inlet configured for engagement with a first fluid supply container for dispensing a first fluid to the elongate interior manifold flow passage, and (ii) a second fluid feed inlet configured for engagement with a second fluid supply container for dispensing a second fluid to the elongate interior manifold flow passage, wherein the first fluid supply container is a container from which the first fluid is dispensable by exertion of pressure thereon, the syringe coupling being in fluid flow communication with the elongate interior manifold flow passage at a first end portion of the elongate interior manifold flow passage, the second fluid feed inlet being in communication with the elongate interior manifold flow passage at a second end portion of the elongate interior manifold flow passage opposite the first end portion of the elongate interior manifold flow passage, the first fluid feed inlet being in communication with the elongate interior manifold flow passage at an intermediate portion of the elongate interior manifold flow passage between the first end portion of the elongate interior manifold flow passage and the second end portion of the elongate interior manifold flow passage, and the cassette assembly being configured for push dispensing of the first fluid from the first fluid supply container through the first fluid feed inlet to the intermediate portion of the elongate interior manifold flow passage, followed by pull dispensing of the second fluid from the second fluid supply container through the second fluid feed inlet to the second end portion of the elongate interior manifold flow passage so that the second fluid intermixes with the first fluid in the elongate manifold fill passage and purges the first fluid from the elongate manifold fill passage during syringe filling. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification