Overmolded tubing assembly and adapter for a positive displacement pump
A tubing assembly is provided that can comprise a plurality of tubes or lumens that can be disposed within a head of a peristaltic pump. The tubing assembly can provide a flow rate or volume capacity that is generally equal to or greater than that achieved with a comparable prior art tube while operating at higher pressures than that possible using the prior art tube. Further, in accordance with some embodiments, the tubing assembly can achieve a longer working life than a comparable prior art tube, and the load on the pump motor can be reduced such that the pump life is increased and/or a larger pump motor is not required to achieve such advantageous results.
1. A peristaltic pump assembly, the assembly comprising:
a peristaltic pump having a cover; and
a tubing and adapter assembly configured for use with the peristaltic pump, the tubing and adapter assembly comprising:
an elongate body defining a longitudinal axis, a first end, and a second end, the elongate body having a plurality of lumens extending along the longitudinal axis, each lumen being surrounded by a tube wall, the plurality of lumens extending from the first end to the second end such that the first end is in fluid communication with the second end of the elongate body;
a first tube gripper having a plurality of prongs defining cylindrical openings such that each of said plurality of prongs grip an interior surface of a tube wall defining one of the plurality of lumens adjacent said first end of the body;
a second tube gripper having a plurality of prongs defining cylindrical openings such that each of said plurality of prongs grip an interior surface of a tube wall defining one of the plurality of lumens adjacent said second end of the body;
a first external system interface having an annular surface defining a first flow passage, a first pump interface portion, a first mounting interface portion and a first tube identifier portion; and
a second external system interface having an annular surface defining a second flow passage, a second pump interface portion, a second mounting interface portion and a second tube identifier portion;
wherein the tube walls define the plurality of lumens and wherein the first external system interface comprises a section having a smaller diameter than the surrounding areas which cooperates with the pump to hold the first external system interface in place and the second external system interface comprises a section having a smaller diameter than the surrounding areas which cooperates with the pump to hold the second external system interface in place.
2. The peristaltic pump assembly of claim 1 , wherein the first external system interface includes a first end fitting which is one of a hose barb adapter, threaded adapter, sanitary adapter, and quick-release adapter.
3. The peristaltic pump assembly of claim 1 , wherein the second external system interface includes a second end fitting which is one of a hose barb adapter, threaded adapter, sanitary adapter, and quick-release adapter.
4. The peristaltic pump assembly of claim 1 , wherein the first external system interface is the same type of interface as the second external system interface.
5. The peristaltic pump assembly of claim 1 , wherein the first external system interface is not the same type of interface as the second external system interface.
6. The peristaltic pump assembly of claim 1 , wherein a first tubing interface portion is coupled to the first external system interface by one of spin welding, sonic welding, glue, threaded connection, and one or more mechanical fasteners.
7. The peristaltic pump assembly of claim 1 , wherein a second tubing interface portion is coupled to the second external system interface by one of spin welding, sonic welding, glue, threaded connection, and one or more mechanical fasteners.
8. The peristaltic pump assembly of claim 1 , wherein the first or second tube identifier portion extends from one side of the tubing and adapter assembly such that the first or second tube identifier portion is readable when the tubing and adapter assembly is installed in the peristaltic pump.
9. The peristaltic pump of claim 8 , wherein at least one of the first tube identifier portion and the second tube identifier portion is readable through said cover.