Method and apparatus for disposing of liquid surgical waste for protection of healthcare workers

• US 7,469,727 B2
• Filed: 08/08/2003
• Issued: 12/30/2008
• Est. Priority Date: 08/21/2002
• Status: Active Grant

• Current Assignee: Precision Therapeutics
• Original Assignee: BioDrain Medical, Inc.
• Inventors: Marshall, Ryan C.
• Primary Examiner(s): MAUST, TIMOTHY LEWIS
• Application Number:
  US10/524,086
• Publication Number:
  US 20050209585A1
• Time in Patent Office: 1,971 Days
• Field of Search: 141/65, 141/67, 141/83, 141/86, 141/89, 141/91, 141/94, 141/95, 604317-326, 422/292
• US Class Current: 141/65
• CPC Class Codes: A61L 11/00 Methods specially adapted for refuse disintegrating medical waste B02C19/0075; disposal of medical waste B09B3/00
• 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 1/78 Means for preventing overflow or contamination of the pumping systems combined with drainage containers A61M1/60
• CPC Class Codes: A61M 2205/3393 by weighing the reservoir
• CPC Class Codes: A61M 2209/082 Mounting brackets, arm supports for equipment
• CPC Class Codes: B09B 3/0075 Disposal of medical waste casings for used articles, e.g. sharps A61B50/362; sterilisation of refuse A61L11/00; disposal of used needles or syringes A61M5/3205; disintegrating medical waste B02C19/0075
• CPC Class Codes: G01F 3/38 having only one measuring chamber

Abstract

An improved method for measuring and automatically disposing of infectious waste generated during and after surgical and clinical procedures is provided. The infectious waste removal device includes a suction source, a method for pressure verification, separation chamber for isolating fluids, containment reservoir, measurement chamber for determining fluid received, an information source for such fluid volumes, a quantitative method for calculating fluid dynamics, a post use cleaning method, and other attributes for use by the surgical team or healthcare staff in order to while minimize healthcare worker handling of said infectious waste and to limit their possible exposure.

Claims

1. An apparatus for handling waste fluid, comprising:

(a) a negative pressure source;

(b) a separation chamber in fluid communication with said negative pressure source, said separation chamber having an inlet through which waste fluid from said waste fluid source is drawn into said separation chamber by said negative pressure source;

(c) a holding chamber in fluid communication with said separation chamber;

(d) an outlet in fluid communication with said holding chamber;

(e) a pump disposed to pump said waste fluid from said holding chamber through said outlet, while said negative pressure is maintained in said separation chamber;

(f) a first sensor electrically coupled to said pump and disposed to detect when said waste fluid reaches a predetermined high level in said holding chamber, whereupon said pump is activated to begin pumping said waste fluid from said holding chamber through said outlet;

(g) a second sensor electrically coupled to said pump and disposed to detect when said waste fluid reaches a predetermined low level in said holding chamber, whereupon said pump is de-activated;

(h) a microprocessor electrically coupled to said first sensor and said second sensor, said microprocessor programmed to determine and record a volume of waste fluid pumped through said outlet by said pump.

2. The apparatus as in claim 1 and further including an alphanumeric display electrically coupled to said microprocessor for displaying said recorded volume of waste fluid pumped through said outlet by said pump.

3. The apparatus of claim 1 wherein the collection chamber has a fluid inlet port coupled by tubing to an end effector and a vacuum adapted to be connected to a vacuum source.

4. The apparatus as in claim 3 and further including a pressure sensor disposed in the collection chamber, the pressure sensor providing an input to the microprocessor and a second alphanumeric display driven by the microprocessor for providing a visual display of a pressure within the collection chamber.

5. The apparatus as in claim 3 and further including a baffle disposed in the collection chamber for preventing liquid waste from flowing through the vacuum port.

6. The apparatus as in claim 2 and further including a data entry device coupled to the microprocessor.

7. The apparatus as in claim 6 wherein the data entry device is a keypad.

8. The apparatus as in claim 6 wherein the data entry device is a bar code.

9. The apparatus of claim 1 wherein said negative pressure source is a centralized negative pressure source of a facility to which the apparatus is coupled.

10. The apparatus of claim 1 wherein said negative pressure source is a portable negative pressure source.

11. The apparatus of claim 9 or 10 wherein said outlet is in fluid communication with a sewer.

12. The apparatus of claim 9 or 10 wherein said outlet is in fluid communication with a waste fluid container.

13. The apparatus of claim 12 wherein said apparatus is disposed within a portable housing along with a power source and said waste fluid container.