Portable hand pump for evacuation of fluids

Patent metadata

Field	Value
Publication number	US-9907887-B2
Application number	US-201615210787-A
Country	US
Kind code	B2
Filing date	Jul 14, 2016
Priority date	Nov 20, 2003
Publication date	Mar 6, 2018
Grant date	Mar 6, 2018

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.

First claim

What is claimed is:

1. A system for removing fluids from a body cavity, comprising:
a fluid receptacle capable of receiving the fluids from the body cavity;
an inflow conduit capable of removing the fluids from the body cavity; and
a pump positionable between the fluid receptacle and the inflow conduit such that the pump is in fluid communication with both the body cavity and the fluid receptacle, wherein the pump does not require electricity for operation, and wherein the pump is capable of operating by generating a negative pressure relative to the body cavity to transfer fluid from the body cavity to the fluid receptacle and by positioning the pump such that all power for fluid flow is provided by gravity.

2. The system according to claim 1 , wherein the inflow conduit is selected from the group consisting of a standard chest tube, an endotracheal tube, and a catheter.

3. The system according to claim 1 , wherein the pump includes a compressible center portion.

4. The system according to claim 3 , wherein the compressible center portion is sized and configured to be compressed for effective pump operation by an operator using only one hand to initiate unidirectional fluid flow.

5. The system according to claim 3 , wherein the compressible center portion is sized and configured to be compressed for effective pump operation by an operator or operators using two hands to initiate unidirectional fluid flow.

6. The system according to claim 3 , wherein the compressible center portion is sized, shaped, and configured to be compressed for effective pump operation by an operator using foot compression on the compressible center portion to initiate unidirectional fluid flow.

7. The system according to claim 3 , wherein an exterior of the compressible center portion is at least partially covered by a textured surface.

8. The system according to claim 1 , wherein the pump can be effectively used in removing fluids, blood clots, and air from the body cavity of a subject suffering from hemopneumothorax.

9. The system according to claim 1 , wherein the pump is adapted to be connected to an autotransfusion device.

10. The system according to claim 1 , wherein the pump is adapted for connection to at least one additional pump in series so as to provide a multiple pump system.

11. The system according to claim 1 , wherein the pump can effectively remove blood, blood clots, fluid, and air from the body cavity, the pump generating a negative pressure in a range of 5 mm to 100 mm Hg.

12. The system according to claim 1 , further comprising an inflow connector coupled to the inflow conduit and a first end of the pump, an outflow conduit coupled to the fluid receptacle, and an outflow connector coupled to the outflow conduit and a second end of the pump opposite the first end.

13. A system for removing fluids from a subject, the system comprising:
a fluid-tight pump body having a first end, a second end, and a compressible center portion;
an inflow connector attached to the first end, the inflow connector adaptable for connection to an inflow conduit for removing fluid from a body;
an outflow connector attached to the second end, the outflow connector adaptable for connection to an outflow conduit;
an inflow one-way valve disposed between the inflow connector and the pump body, the inflow one-way valve adapted to permit flow of fluid from the inflow conduit through the inflow connector and into the pump body and adapted to restrict backflow of fluid from the pump body into the inflow connector and inflow conduit; and
an outflow one-way valve disposed between the pump body and the outflow connector, the outflow one-way valve adapted to permit flow of fluid from the pump body into the outflow connector and into the outflow conduit even when all power for the flow of fluid is provided by gravity alone and adapted to restrict backflow of fluid from the outflow conduit and outflow connector into the pump body.

14. The system according to claim 13 , wherein compression of the pump body can initiate unidirectional fluid flow from a body cavity to a fluid receptacle.

15. The system according to claim 13 , further comprising an implantable catheter in fluid communication with the pump body.

16. The system according to claim 13 , wherein the pump body can generate a fluid flow of approximately one liter per minute.

17. The system according to claim 13 , further comprising suction handles that are attachable to the pump body to suck out secretions from a mouth.

18. The system according to claim 13 , wherein the pump body is configured such that compressing the pump body by foot can initiate unidirectional fluid flow from the body through the pump body to the outflow conduit.

Assignees

• Henry M Jackson Found Advancement Military Medicine Inc

Inventors

• Alam Hasan B
• Rhee Peter
• Rhee Emily

Classifications

• B24D3/14

  ceramic, i.e. vitrified bondings · CPC title

• A61M2205/071

  hand operated · CPC title

• B21B28/04

  while in use, e.g. polishing {or grinding while the rolls are in their stands} · CPC title

• B24B5/04

  for grinding cylindrical surfaces externally (grinding combined cylindrical and conical surfaces B24B5/14) · CPC title

• B24B5/37

  for grinding rolls, e.g. barrel-shaped rolls · CPC title