Sampling and infusion connector for an extracorporeal blood circulation line
First Claim
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1. A sampling and infusion connector for an extracorporeal blood circulation line, the connector comprising:
- a body having upstream and downstream distal ends and an elongated cavity extending therebetween, the upstream and downstream ends for connection to ducts of the extracorporeal blood circulation line;
infusion port means connected to the elongated cavity for introducing a substance into the cavity;
sampling port means connected to the cavity for removing blood from the cavity; and
means disposed in the cavity between the infusion port means and the sampling port means for preventing the substance introduced through the infusion port means from entering the sampling port means, the preventing means including a constriction having a diameter that progressively decreases towards the infusion opening.
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Abstract
A connector includes a body having a tubular cavity connected to two ducts and includes an infusion aperture for infusing a liquid into the line and a sampling aperture for sampling blood. A constriction having a diameter progressively decreasing towards the inlet aperture is disposed in the cavity between the two apertures and produces a Venturi tube effect, preventing the sampled blood from being affected by the infused liquid.
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Citations
10 Claims
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1. A sampling and infusion connector for an extracorporeal blood circulation line, the connector comprising:
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a body having upstream and downstream distal ends and an elongated cavity extending therebetween, the upstream and downstream ends for connection to ducts of the extracorporeal blood circulation line; infusion port means connected to the elongated cavity for introducing a substance into the cavity; sampling port means connected to the cavity for removing blood from the cavity; and means disposed in the cavity between the infusion port means and the sampling port means for preventing the substance introduced through the infusion port means from entering the sampling port means, the preventing means including a constriction having a diameter that progressively decreases towards the infusion opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A sampling and infusion connector for an extracorporeal blood circulation line, the connector comprising:
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a body having upstream and downstream distal ends and an elongated cavity extending therebetween, the upstream and downstream ends for connection to ducts of the extracorporeal blood circulation line; an infusion port connected to the elongated cavity for introducing a substance into the cavity; a sampling port connected to the cavity for removing blood from the cavity; and a constriction disposed in the cavity between the infusion port and the sampling port preventing the substance introduced through the infusion port from entering the sampling port, the constriction having a diameter that progressively decreases towards the infusion port.
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Specification