Ventilator pressure oscillation filter

• US 9,289,573 B2
• Filed: 12/28/2012
• Issued: 03/22/2016
• Est. Priority Date: 12/28/2012
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Platt, Clayton R., Zheng, Fang, Crawford, Rick
• Primary Examiner(s): Yu, Justine
• Assistant Examiner(s): Stuart, Colin W
• Application Number:
  US13/730,513
• Publication Number:
  US 20140182590A1
• Time in Patent Office: 1,180 Days
• Field of Search: 128/205.24, 137/602, 137/605
• US Class Current: 1/1
• CPC Class Codes: A61M 16/0006 with means for creating vibrations in patients' airways
• CPC Class Codes: A61M 16/0051 with alarm devices
• CPC Class Codes: A61M 16/0057 Pumps therefor
• CPC Class Codes: A61M 16/0063 Compressors
• CPC Class Codes: A61M 16/0096 High frequency jet ventilation
• CPC Class Codes: A61M 16/04 Tracheal tubes catheters in general A61M25/00
• CPC Class Codes: A61M 16/06 Respiratory or anaesthetic masks
• CPC Class Codes: A61M 16/0816 Joints or connectors
• CPC Class Codes: A61M 16/0875 Connecting tubes
• CPC Class Codes: A61M 16/105 Filters A61M16/047, A61M16/22 take precedence; water traps A61M16/08
• CPC Class Codes: A61M 16/20 Valves specially adapted to medical respiratory devices
• CPC Class Codes: A61M 16/201 Controlled valves
• CPC Class Codes: A61M 16/202 electrically actuated
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2205/8206 battery-operated

Abstract

A ventilation air pressure oscillation mitigation device for a ventilator includes a housing defining an inlet and an outlet. The device includes a valve seat defining a primary opening and a plurality of secondary openings. A valve body is selectively positionable in a first position and a second position within the device. In the first position, substantially all of a first flow of ventilation air from the inlet to the outlet passes through the primary opening. When the valve body is in the second position, all of a second flow of ventilation air from the inlet to the outlet passes through the plurality of secondary openings. An actuator controls a position of the valve body.

Claims

1. A ventilation air pressure oscillation mitigation device for a ventilator, the oscillation mitigation device comprising:

a housing defining an inlet and an outlet;

a valve seat defining a primary opening and a plurality of secondary openings;

a valve body selectively positionable in a first position and a second position,

wherein when the valve body is in the first position, substantially all of a first flow of ventilation air from the inlet to the outlet passes through the primary opening, and

wherein when the valve body is in the second position, all of a second flow of ventilation air from the inlet to the outlet passes through the plurality of secondary openings; and

an actuator for controlling a position of the valve body.

2. The ventilation air pressure oscillation mitigation device of claim 1, further comprising a filter media located proximate the plurality of second openings, such that when the valve body is in the second position, the second flow of ventilation air from the inlet to the outlet passes through the plurality of secondary openings and the filter media.

3. The ventilation air pressure oscillation mitigation device of claim 2, wherein the filter media is located upstream of the valve body.

4. The ventilation air pressure oscillation mitigation device of claim 1, wherein the actuator comprises a solenoid.

5. The ventilation air pressure oscillation mitigation device of claim 4, wherein the actuator further comprises a biasing element for holding the valve body in at least one of the first position and the second position.

6. The ventilation air pressure oscillation mitigation device of claim 5, wherein the biasing element comprises a magnet for holding the valve body in the first position.

7. The ventilation air pressure oscillation mitigation device of claim 6, wherein the biasing element further comprises a spring for holding the valve body in the second position.

8. A ventilator comprising an inspiratory limb and the ventilation air pressure oscillation mitigation device of claim 1, located on the inspiratory limb.