Valve port assembly with coincident engagement member for fluid transfer procedures
View Patent ↗An improved valve port system provides blood access in a patient through a subcutaneous fluid flow conduit during a dialysis procedure. The system includes several elements, including a engagement member defined by a tubular body having a proximal end, a distal end and a tubular lumen therebetween. The distal end has a tapered bevel defined thereat and a tapered protrusion proximate thereto defined upon an exterior surface of the tubular body. In addition, the system provides a dialysis port member having a housing with a generally cylindrical valve rotatably positioned therein. The valve includes an open end, a closed end and an orifice near the closed end. The valve further includes a longitudinal groove defined along an interior surface thereof. The groove, which is capable of being in registry with the protrusion, is coincident with the protrusion so as to intussuscept the protrusion therein. In this manner, rotation of the engagement member effects rotation of the valve between an open position wherein the orifice is in fluid communication with the fluid flow conduit and a closed position wherein fluid communication between the orifice and the conduit is precluded.
1. A kit of parts adapted to establishing percutaneous vascular access to a patient during a fluid transfer procedure, said kit comprising:
a valve port system for providing vascular access in a patient through a subcutaneous fluid flow conduit during a dialysis procedure;
an extractable engagement member for percutaneous patient entry defined by a tubular body having a proximal end, a distal end and a tubular lumen therebetween, said distal end having a tapered bevel defining an opening thereat and a tapered protrusion proximate thereto defined upon an exterior surface of said tubular body, said protrusion having a generally parabolic profile; and
a port member having a housing with a generally cylindrical valve rotatably positioned therein, said rotatable valve having an open end, a closed end and an orifice proximate said closed end, said body being rotatable about its central axis between an open position and a closed position; said valve further having a longitudinal groove defined along an interior surface thereof capable of being in registry with said engagement member protrusion, said groove coincident with said protrusion for intussusception of said protrusion therein such that rotation of said engagement member effects rotation of said valve between said open and closed positions.
2. The kit of parts of claim 1 wherein said conduit lies adjacent said valve so as to ensure relatively frictionless rotation said valve relative to said conduit.
3. The kit of parts of claim 2 wherein said conduit has an opening proximate said closed end of said valve.
4. The kit of parts of claim 3 wherein said orifice is in fluid communication with said conduit opening in said open position.
5. The kit of parts of claim 3 wherein fluid communication between said conduit opening and said orifice is precluded in said closed position.
6. The kit of parts of claim 1 wherein said bevel opening is in alignment with said orifice.
7. The kit of parts of claim 6 wherein protrusion is located proximate said bevel opening.
8. The kit of parts of claim 7 wherein said protrusion is located in semi-circumferential relationship relative to said bevel opening.
9. The kit of parts of claim 1 wherein said bevel opening conforms to said orifice.
10. The kit of parts of claim 1 wherein said engagement member further includes a gripping member at said proximal end.
11. The kit of parts of claim 10 wherein said gripping member has a plurality of tactile indicia defined thereabout to facilitate gripping and torquing of said engagement member.
12. The kit of parts of claim 10 wherein said gripping member further includes a turn knob defined thereon.
13. The kit of parts of claim 12 wherein said turn knob includes indicia to indicate rotation of said valve between said open and closed positions.