Transfer set for vials and medical containers
First Claim
1. A transfer set assembly for transferring fluids between a first container having a sealed open end and a second container under sterile conditions, said transfer set assembly comprising:
- a collar, a needle cannula holder, a needle cannula and a closure;
said collar having a proximate tubular end portion adapted to be received over said sealed open end of said first container for securement thereto, an intermediate portion having an axial opening therethrough and a distal tubular portion;
said needle cannula holder having a proximate end portion telescopically received in said distal tubular portion of said collar and a tubular distal end portion and said tubular distal end portion having a spiral camming surface;
said needle cannula supported in said holder having a free proximate end portion projecting axially beyond said proximate end portion of said holder;
said closure having a tubular body portion surrounding said needle cannula holder and said distal tubular portion of said collar, a closed distal end portion and an inner tubular portion generally coaxially aligned with said tubular body portion having a spiral camming surface adjacent a free end of said inner tubular portion and engaging said spiral camming surface of said holder; and
whereby, rotation of said closure relative to said holder drives said needle cannula and holder assembly axially to pierce said sealed open end of said first container.
2 Assignments
0 Petitions
Accused Products
Abstract
A transfer set assembly for transferring fluids between a first container, such as a conventional medical vial, having a sealed open end and a second container such as a conventional IV infusion bag. The transfer set includes a collar having a proximate tubular end portion for securement to the container, a needle cannula and holder assembly, which is telescopically received in a distal tubular portion of the collar, and a closure including a tubular body portion having an open proximate end which is telescopically received over the needle cannula and holder assembly and the distal tubular portion of the collar, a closed distal end portion and an inner tubular portion which is integral with the closed distal end. The inner tubular portion includes a free end having spiral camming surfaces which mate with spiral camping surfaces on the inside surface of the tubular distal portion of the needle cannula holder. The tubular body portion of the closure includes lateral slots which receive projections on the collar and contiguous camming surface which extends toward the proximate open end of the closure. Rotation of the closure relative to the collar first drives the mating spiral camming surfaces of the closure and holder together, thereby driving the needle cannula and holder assembly axially to pierce the seal of the container. Continued rotation of the closure drives the projections on the collar against the contiguous angled camming surface, driving the closure from the collar and providing access to the needle cannula for transfer of fluids to a second container, such as an IV infusion bag.
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Citations
16 Claims
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1. A transfer set assembly for transferring fluids between a first container having a sealed open end and a second container under sterile conditions, said transfer set assembly comprising:
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a collar, a needle cannula holder, a needle cannula and a closure;
said collar having a proximate tubular end portion adapted to be received over said sealed open end of said first container for securement thereto, an intermediate portion having an axial opening therethrough and a distal tubular portion;
said needle cannula holder having a proximate end portion telescopically received in said distal tubular portion of said collar and a tubular distal end portion and said tubular distal end portion having a spiral camming surface;
said needle cannula supported in said holder having a free proximate end portion projecting axially beyond said proximate end portion of said holder;
said closure having a tubular body portion surrounding said needle cannula holder and said distal tubular portion of said collar, a closed distal end portion and an inner tubular portion generally coaxially aligned with said tubular body portion having a spiral camming surface adjacent a free end of said inner tubular portion and engaging said spiral camming surface of said holder; and
whereby, rotation of said closure relative to said holder drives said needle cannula and holder assembly axially to pierce said sealed open end of said first container. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A transfer set assembly for transferring fluids between a first container having a sealed open end and a second container under sterile conditions, said transfer set assembly comprising:
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a collar, a needle cannula holder, a needle cannula and a closure;
said collar having a tubular collar portion adapted to be received over said sealed open end of said first container for securement thereto and a distal tubular portion coaxially aligned with said tubular collar portion;
said needle cannula holder having a proximate end portion telescopically received in said distal tubular portion of said collar having a spiral camming surface;
said needle cannula supported in said needle cannula holder having a free proximate end portion projecting axially beyond said needle cannula holder;
said closure having an outer tubular body portion surrounding said needle cannula holder and said distal tubular portion of said collar, a closed distal end portion and an inner tubular portion extending from said closed distal end portion generally coaxially aligned with said outer tubular body portion including a free end spaced from said closed distal end portion;
said free end of said inner tubular portion of said closure defining a spiral camming surface engaging said spiral camming surface of said needle cannula holder;
whereby, rotation of said closure relative to said needle cannula holder drives said needle cannula holder and said needle cannula axially to pierce said sealed open end of said first container. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification