David J Cho

US Patent:

20200282117, Sep 10, 2020

Filed:

Mar 3, 2020

Appl. No.:

16/807723

Inventors:

- Baar, CH
David Y. Cho - Arlington Heights IL, US

International Classification:

A61M 1/06
A61M 1/00

Abstract:

A method and system for enhancing expression of milk from breast alveoli includes providing a pump that delivers a pulsed vacuum. The pulsed vacuum may be delivered by a vacuum pump employing a rigid piston that operates as a multi-stroke accumulator pump. In an embodiment, a piston head of the rigid piston undergoes a non-linear motion relative to a sidewall of a cylinder of the pump, resulting in an oscillatory impulse on the interior of the vacuum chamber in the cylinder. The vacuum pulse frequency of the pump is applied over a cyclical vacuum frequency that would otherwise be applied had the piston head only moved up and down while maintaining a perpendicular relationship to the sidewall of the cylinder.

US Patent:

20200061264, Feb 27, 2020

Filed:

Oct 30, 2019

Appl. No.:

16/668816

Inventors:

- Baar, CH
David Y. Cho - Arlington Heights IL, US
Mario Rigert - Buchrain, CH

International Classification:

A61M 1/06
A61M 39/22
A61M 1/00
F16K 15/18

Abstract:

A mechanical fluid pressure modification valve, or “MFLP-valve”, is set forth. The MFLP-valve can be actuated upon movement of a movable pressure system member of a medical pressure system reaching a selected position. Additionally, the MFLP-valve can be actuated based on a pressure condition of the system. When the MFLP-valve unseals, a pressure differential between a pressure chamber and a volume outside of the chamber can be relieved. Disengagement of the movable pressure system member from the MFLP-valve can enable the MFLP-valve to re-seal. The MFLP-valve may include a flag that indicates the position of the movable pressure system member. The MFLP-valve may be provided in a diaphragm-type pressure source.

US Patent:

20170043073, Feb 16, 2017

Filed:

Aug 12, 2016

Appl. No.:

15/235370

Inventors:

- Baar, CH
David Cho - Arlington Heights IL, US
Mario Rigert - Buchrain, CH

International Classification:

A61M 1/06
A61M 39/22

Abstract:

A mechanical fluid pressure modification valve, or “MFLP-valve”, is set forth. The MFLP-valve can be actuated upon movement of a movable pressure system member of a medical pressure system reaching a selected position. Additionally, the MFLP-valve can be actuated based on a pressure condition of the system. When the MFLP-valve unseals, a pressure differential between a pressure chamber and a volume outside of the chamber can be relieved. Disengagement of the movable pressure system member from the MFLP-valve can enable the MFLP-valve to re-seal. The MFLP-valve may include a flag that indicates the position of the movable pressure system member. The MFLP-valve may be provided in a diaphragm-type pressure source.

US Patent:

20160228624, Aug 11, 2016

Filed:

Feb 10, 2016

Appl. No.:

15/040253

Inventors:

- Baar, CH
David Cho - Arlington Heights IL, US
Kathryn Mizuchi - Round Lake Beach IL, US

International Classification:

A61M 1/06
B01D 19/00

Abstract:

A directed media separation system includes components for directing a consistent collapse of a media separation device in response to a varying pressure from a pressure source. The media separation device can be removably connected to a directing element. The directing element can have a directing geometry that affects the collapse of the media separation device. The media separation device can have a preset geometry that collapses in a predictable and repeatable manner from the applied pressure.