IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0292641
(2005-12-02)
|
등록번호 |
US8006692
(2011-08-15)
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발명자
/ 주소 |
- Smith, Michael S.
- Voss, Greg
- Bliss, Peter
- Halperin, Scott
|
출원인 / 주소 |
|
대리인 / 주소 |
Dicke, Billig & Czaja, PLLC
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
3 |
초록
▼
A gas blender with auxiliary mixed gas outlet for mixing a primary gas, generally air, and a secondary gas, generally oxygen, to obtain a mixed gas having several controlled characteristics. The gas blender may be incorporated into a Continuous Positive Airway Pressure (CPAP) device. The gas blender
A gas blender with auxiliary mixed gas outlet for mixing a primary gas, generally air, and a secondary gas, generally oxygen, to obtain a mixed gas having several controlled characteristics. The gas blender may be incorporated into a Continuous Positive Airway Pressure (CPAP) device. The gas blender controls the mixing to produce the mixed gas having a predetermined mixture setpoint, generally an oxygen percentage, and a predetermined control setpoint, generally a pressure setpoint or flow rate setpoint. The gas blender provides an auxiliary mixed gas source for use by an auxiliary piece of equipment such as a nebulizer or resuscitation bag. The gas blender includes a primary gas inlet passageway, a secondary gas inlet passageway, a gas mixing apparatus, a mixed gas distribution passageway with an auxiliary mixed gas outlet, a gas sensor, a delivery sensor, a mixed gas delivery control valve, a mixed gas controlled passageway, and a controller.
대표청구항
▼
We claim: 1. A gas blender with source pressure auxiliary mixed gas outlet (100) for mixing a primary gas (10), at a primary gas source pressure, and a secondary gas (20), at a secondary gas source pressure, in a controlled manner to produce a mixed gas (30) having a predetermined mixture setpoint (
We claim: 1. A gas blender with source pressure auxiliary mixed gas outlet (100) for mixing a primary gas (10), at a primary gas source pressure, and a secondary gas (20), at a secondary gas source pressure, in a controlled manner to produce a mixed gas (30) having a predetermined mixture setpoint (32) and a predetermined control setpoint (34), and providing a mixed gas (30) source having a pressure of at least fifty percent of the first gas source pressure for selective use by at least one auxiliary piece of equipment, comprising:a primary gas inlet passageway (200) having a primary gas inlet port (210), for receiving the primary gas (10) from an external source, and a primary gas inlet passageway discharge (220);a secondary gas inlet passageway (300) having a secondary gas inlet port (310), for receiving the secondary gas (20) from an external source, and a secondary gas inlet passageway discharge (320);a gas mixing apparatus (400) in fluid communication with the primary gas inlet passageway (200), the secondary gas inlet passageway (300), and a mixed gas distribution passageway (500), wherein the gas mixing apparatus (400) receives primary gas (10) through the primary gas inlet passageway (200) and receives secondary gas (20) through the secondary gas inlet passageway (300), wherein the gas mixing apparatus (400) mixes the primary gas (10) with the secondary gas (20) in response to a mixing control signal (1010) thereby producing the mixed gas (30) at the predetermined mixture setpoint (32) and a pressure of at least fifty percent of the primary gas source pressure that then exits the gas mixing apparatus (400) via the mixed gas distribution passageway (500), wherein the mixed gas distribution passageway (500) has an auxiliary mixed gas outlet (510) for supplying the mixed gas (30) at the predetermined mixture setpoint (32) and a pressure of at least fifty percent of the primary gas source pressure for use by the at least one auxiliary piece of equipment, wherein the at least one auxiliary piece of equipment comprises one of a nebulizer and a resuscitation bag;a gas sensor (600) in fluid communication with the mixed gas distribution passageway (500) for producing a gas signal (610);a mixed gas delivery control valve (700) in fluid communication with the mixed gas distribution passageway (500) and a mixed gas controlled passageway (800), wherein the mixed gas delivery control valve (700) receives the mixed gas (30) at the predetermined mixture setpoint (32) and modulates in response to a delivery control signal (1020) thereby fixing the mixed gas (30) at the predetermined mixture setpoint (32) and the predetermined control setpoint (34) that then exits the mixed gas delivery control valve (700) via the mixed gas controlled passageway (800) at a mixed gas controlled passageway discharge (820) separate from the auxiliary mixed gas outlet (510);a delivery sensor (900) in fluid communication with the mixed gas (30) after it exits the mixed gas delivery control valve (700) for generating a delivery sensing signal (910); anda controller (1000) for comparing the predetermined mixture setpoint (32) and the gas signal (610), and generating the mixing control signal (1010), and for comparing the predetermined control setpoint (34) and the delivery sensing signal (910), and generating the delivery control signal (1020).
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