Portable hand pump for evacuation of fluids

• US 8,636,721 B2
• Filed: 11/22/2004
• Issued: 01/28/2014
• Est. Priority Date: 11/20/2003
• Status: Active Grant

• Current Assignee: Henry M Jackson Foundation For The Advancement of Military Medicine Incorporated
• Original Assignee: Henry M Jackson Foundation For The Advancement of Military Medicine Incorporated
• Inventors: Rhee, Peter, Rhee, Emily, Alam, Hasan
• Primary Examiner(s): Zalukaeva, Tatyana
• Assistant Examiner(s): TREYGER, ILYA Y
• Application Number:
  US10/595,450
• Publication Number:
  US 20080091174A1
• Time in Patent Office: 3,354 Days
• Field of Search: 604540-544
• US Class Current: 604/541
• CPC Class Codes: A61M 1/04 Artificial pneumothorax apparatus
• CPC Class Codes: A61M 1/68 Containers incorporating a flexible member creating suction
• CPC Class Codes: A61M 1/70 Gravity drainage systems drainage containers not being adapted for subjection to vacuum A61M1/69
• CPC Class Codes: A61M 1/774 Handpieces specially adapted for providing suction as well as irrigation, either simultaneously or independently
• CPC Class Codes: A61M 1/80 Suction pumps A61M1/64, A61M1/71, A61M60/00 take precedence
• CPC Class Codes: A61M 1/82 Membrane pumps, e.g. bulbs
• CPC Class Codes: A61M 1/90 Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
• CPC Class Codes: A61M 16/0463 combined with suction tubes, catheters or the like; Outside connections
• CPC Class Codes: A61M 2205/071 hand operated
• CPC Class Codes: A61M 2205/078 foot operated
• CPC Class Codes: A61M 27/00 Drainage appliance for wounds or the like , i.e. wound drains, implanted drains negative pressure wound therapy devices A61M1/90; implements for holding wound open A61B17/02 ; middle ear drainage A61F11/202
• CPC Class Codes: A61M 39/24 Check- or non-return valves
• CPC Class Codes: B21B 28/04 while in use, e.g. polishing or grinding while the rolls are in their stands
• CPC Class Codes: B24B 5/04 for grinding cylindrical surfaces externally grinding combined cylindrical and conical surfaces B24B5/14
• CPC Class Codes: B24B 5/37 for grinding rolls, e.g. barrel-shaped rolls
• CPC Class Codes: B24D 3/14 ceramic, i.e. vitrified bondings
• CPC Class Codes: B24D 5/00 Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor

Abstract

A manually operable pump for the effective removal of fluids to include blood, blood clots, fluid, and air from a body cavity of a subject is provided. The manually operable pump is adapted to be connect to a range of fluid conduits and is equipped with one-way valves that effectively permit flow of fluid through the pump in only one direction. The sensitivity of the one-way valves is such that when properly positioned, fluid can flow through the valves and out of the pump without manual compression of the pump and with the aid of gravity power alone.

Claims

1. A method of removing fluid from a plural space of a body cavity of a subject, comprising:

attaching a manually operable pump to a proximal end of an implanted catheter, the manually operable pump in fluid communication with a fluid receptacle via an inflow conduit comprising a pleural evacuation tube for removing fluid from the plural space;

generating a negative pressure via the manually operable pump to initiate fluid flow from the body cavity toward the fluid receptacle; and

positioning the manually operable pump to flow fluid from the body cavity to the fluid receptacle such that all power for fluid flow is provided by gravity.

2. The method of claim 1, wherein the step of generating a negative pressure comprises compressing a pump body interposed between two one-way valves to initiate unidirectional fluid flow from the body cavity to the fluid receptacle.