Container with integral pump platen

• US 6,071,095 A
• Filed: 06/17/1998
• Issued: 06/06/2000
• Est. Priority Date: 10/20/1995
• Status: Expired due to Term

• Current Assignee: Haemonetics Corporation
• Original Assignee: Harvest Technologies Corporation (Terumo Corporation)
• Inventors: Verkaart, Wesley H.
• Primary Examiner(s): CAPOSSELA, RONALD C
• Application Number:
  US09/051,482
• Time in Patent Office: 720 Days
• Field of Search: 417/477.9, 422/102, 604/319, 604/406, 210/416.1, 210/436, 210/512.1
• US Class Current: 417/477.9
• CPC Class Codes: A61J 1/05 for collecting, storing or administering blood, plasma or medical fluids multiple bags systems for separating or storing blood components A61M1/0209; Infusion or perfusion containers
• CPC Class Codes: A61J 1/10 Bag-type containers
• CPC Class Codes: A61J 1/1475 Inlet or outlet ports
• CPC Class Codes: A61M 1/3627 Degassing devices; Buffer reservoirs; Drip chambers; Blood filters
• CPC Class Codes: A61M 1/60 Containers for suction drainage, adapted to be used with an external suction source containers not adapted for subjection to vacuum A61M1/69
• CPC Class Codes: A61M 1/74 Suction control underwater drainage A61M1/61
• CPC Class Codes: A61M 1/79 Filters for solid matter specially adapted for dental use A61C17/065
• CPC Class Codes: A61M 2205/75 with filters
• CPC Class Codes: A61M 39/10 Tube connectors; Tube couplings A61M39/02 takes precedence; connecting needles to syringes or hubs A61M5/34; connecting catheter tubes to hubs A61M25/0014
• CPC Class Codes: A61M 60/113 in other functional devices, e.g. dialysers or heart-lung machines
• CPC Class Codes: A61M 60/279 Peristaltic pumps, e.g. roller pumps
• CPC Class Codes: A61M 60/43 using vacuum at the blood pump, e.g. to accelerate filling
• CPC Class Codes: F04B 43/0072 of tubular flexible members
• CPC Class Codes: F04B 43/1253 by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing

Abstract

A container (400) for the collection of fluids in a vacuum system includes upper and lower chambers (402, 404). Fluids are admitted to the upper chamber (402) to form a vortex and separate fluid and debris from air. The fluids then pass to the lower chamber (404) through a filter (412). A discharge tube (428) is connected to the lower chamber (404) to allow the accumulated fluids to be pumped from the container (400). The bottom of the lower chamber (404) includes a recess (430) that forms a platen for a roller pump, and a discharge tube (428) is located adjacent the platen whereby rollers (426) engage the tube (428) and platen upon installation of the chamber (400) on a base. A second port (418) is provided to the upper chamber (402) for admission of a second fluid such as an anticoagulant.

Claims

1. Apparatus for collection of fluids comprising a chamber formed by an upper element and a lower element, wherein said upper element comprises an upper chamber formed between an outer wall and an inner wall and said inner wall forms an inner cavity in communication with said lower element, a vacuum port connected to said inner cavity for conducting air from said chamber and reducing the pressure in said chamber, a fluid inlet for admitting a first fluid into said upper chamber in response to reduced pressure in said chamber, and means for discharging said fluids from said chamber.

2. Apparatus according to claim 1 further comprising a second port for admitting a second fluid to said upper chamber in response to said reduced pressure for mixing with said first fluid in said upper chamber, means attached to said second port for controlling the flow of said second fluid into said upper chamber such that the amount of said second fluid drawn into said chamber is in approximately fixed proportion to the amount of said first fluid drawn into said chamber.

3. Apparatus according to claim 2 wherein said means attached to said second port is a porous disk.

4. Apparatus according to claim 1 wherein said upper chamber receives said first fluid from the exterior of said chamber and forms therein a vortex flow in said first fluid.

5. Apparatus according to claim 4 wherein said means for discharging comprises a discharge port connected to said lower element.

6. Apparatus according to claim 5 wherein said means for discharging further comprises a flexible outlet line connected to said discharge port and a roller-pump platen formed in said lower element adjacent said flexible outlet line.

7. Apparatus according to claim 6 wherein said platen is formed in a bottom surface of said lower element.

8. Apparatus according to claim 1 wherein said fluid inlet is positioned with respect to said upper element to form a vortex flow in said first fluid.

9. Apparatus for collection and discharge of fluids comprising a chamber for receiving said fluids, a fluid inlet for admitting said fluids to said chamber, a discharge port for allowing said fluids to flow out of said chamber, a flexible outlet line attached to said discharge port for carrying discharged fluids, and a recess in said chamber adjacent said flexible outlet line, said recess forming a platen for engaging said flexible outlet line when said flexible outlet line is pushed into engagement with said recess by rollers to pump said fluids through said discharge port.

10. Apparatus according to claim 9 wherein said recess is in the bottom of said chamber.

11. Apparatus according to claim 9 wherein said chamber comprises an upper element and a lower element in fluid communication with said upper element and said fluid inlet is tangentially located in said upper element to form a vortex flow in said fluids that are admitted to said upper element.

12. Apparatus according to claim 11 wherein said upper element is cylindrical.

13. Apparatus according to claim 11 further comprising a vacuum port in communication with said lower element.

14. Apparatus according to claim 13 wherein said vacuum port communicates with an inner cavity formed in said upper element, said inner cavity being in communication with said lower element.

15. Apparatus according to claim 13 further comprising a clip for supporting one end of said flexible outlet line.

16. Apparatus according to claim 13 further comprising a filter between said upper and lower elements for removing particulates from said fluids passing from said upper element to said lower element.

17. Apparatus according to claim 9 wherein said chamber comprises an upper element and a lower element, said upper chamber is formed between an outer wall and an inner wall, and said inner wall forms an inner cavity in communication with said lower element, and further comprising a vacuum port connected to said inner cavity for conducting air from said chamber and reducing the pressure in said chamber.