Fluid Occlusion Detection Apparatus and Method

• US 20160184517A1
• Filed: 07/28/2014
• Published: 06/30/2016
• Est. Priority Date: 07/30/2013
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: LEE, Sang-hun, BAEK, In-geol, KIM, Young-hyun, KWAK, Jae-kyung
• Granted Patent: US 10,226,573 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61M 2005/16863 Occlusion detection
• CPC Class Codes: A61M 2005/16868 Downstream occlusion sensors
• CPC Class Codes: A61M 2205/0294 Piezoelectric materials
• CPC Class Codes: A61M 2205/3306 Optical measuring means
• CPC Class Codes: A61M 2205/3317 Electromagnetic, inductive or dielectric measuring means
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/16854 by monitoring line pressure
• CPC Class Codes: A61M 5/16859 Evaluation of pressure response, e.g. to an applied pulse

Abstract

A fluid occlusion detection apparatus is disclosed. The fluid occlusion detection apparatus includes: a structure disposed on a fluid delivery device and that is deformed according to pressure; and a change detection sensor in a surrounding region of the structure, wherein the fluid delivery device includes a fluid reservoir container and/or a fluid delivery passageway for connecting a human body and the fluid reservoir container, and the change detection sensor detects a change in a value related to the change detection sensor due to deformation of a shape of the structure according to an increase in pressure inside the fluid delivery device by fluid occlusion inside the fluid delivery device.

Claims

1. A fluid occlusion detection apparatus comprising:

a structure disposed on a fluid delivery device and that is deformed according to pressure; and

a change detection sensor on a surrounding region of the structure, wherein the fluid delivery device comprises a fluid reservoir container and/or a fluid delivery passageway for connecting a human body and the fluid reservoir container, and

the change detection sensor detects a change in a value related to the change detection sensor due to deformation of a shape of the structure according to an increase in pressure inside the fluid delivery device by fluid occlusion inside the fluid delivery device.

2. The fluid occlusion detection apparatus of claim 1, wherein the structure is disposed on the fluid reservoir container and/or the fluid delivery passageway for connecting the human body and the fluid reservoir container.

3. The fluid occlusion detection apparatus of claim 1, wherein the structure is at least one selected from the group consisting of a membrane, a tube, a piston, and a bellows.

4. The fluid occlusion detection apparatus of claim 1, wherein the change detection sensor comprises a capacitor located on the surrounding region of the structure and detects a change in a capacitance of the capacitor when the structure, of which the shape has been deformed due to an increase in the pressure inside the fluid delivery device by fluid occlusion inside the fluid delivery device, contacts one side of the capacitor.

5. The fluid occlusion detection apparatus of claim 1, wherein the change detection sensor comprises a resistor disposed on the structure and that detects a change in a resistance of the resistor when a shape of the resistor is deformed by the structure of which the shape has been deformed due to an increase in the pressure inside the fluid delivery device by fluid occlusion inside the fluid delivery device.

6. The fluid occlusion detection apparatus of claim 1, wherein the change detection sensor comprises a magnetic body disposed on the structure and a magnetic field sensor for measuring a magnetic field of a surrounding region of the magnetic body, and

the magnetic field sensor detects a change in the magnetic field when a distance between the magnetic body and the magnetic field sensor varies due to deformation of the shape of the structure according to an increase in the pressure inside the fluid delivery device by fluid occlusion inside the fluid delivery device.

7. The fluid occlusion detection apparatus of claim 6, wherein the magnetic field sensor is a Hall effect sensor and/or a lead switch.

8. The fluid occlusion detection apparatus of claim 1, wherein the change detection sensor comprises, in the surrounding region of the structure, a detection unit including a light-transmitting unit and a light-receiving unit and a reflective film interposed between the structure and the detection unit and that detects a change in the intensity of light received by the light-receiving unit when the structure, of which the shape has been deformed due to an increase in the pressure inside the fluid delivery device by fluid occlusion inside the fluid delivery device, contacts the reflective film.

9. The fluid occlusion detection apparatus of claim 1, wherein the change detection sensor comprises, in the surrounding region of the structure, a piezo panel vibrating at a constant frequency and that detects a change in the frequency of the piezo panel when the structure, of which the shape has been deformed due to an increase in the pressure inside the fluid delivery device by fluid occlusion inside the fluid delivery device, contacts one side of the piezo panel.

10. The fluid occlusion detection apparatus of claim 1, wherein the change detection sensor comprises a conductor in the surrounding region of the structure and detects a change in a current when the conductor is open-circuited according to deformation of the shape of the structure due to an increase in the pressure inside the fluid delivery device by fluid occlusion inside the fluid delivery device.

11. The fluid occlusion detection apparatus of claim 10, wherein the conductor is formed on a carbon bar and/or a ceramic bar and has conductivity.

12. A fluid occlusion detection method comprising:

measuring a parameter value related to a change detection sensor provided to a surrounding region of a fluid delivery device;

extracting a change in the measured parameter value based on deformation in a shape of a structure disposed on the fluid delivery device; and

detecting fluid occlusion inside the fluid delivery device based on the extracted change in the measured parameter value,

wherein the fluid delivery device comprises a fluid reservoir container and/or a fluid delivery passageway for connecting a human body and the fluid reservoir container, and

a shape of the structure is deformed due to an increase in pressure inside the fluid delivery device by the fluid occlusion inside the fluid delivery device.

13. The fluid occlusion detection method of claim 12, wherein the structure is at least one selected from the group consisting of a membrane, a tube, a piston, and a bellows.

14. The fluid occlusion detection method of claim 12, wherein the parameter value related to the change detection sensor is a capacitance of a capacitor provided to the change detection sensor, and

a change in the capacitance of the capacitor is extracted when the structure contacts one side of the capacitor based on the shape deformation of the structure disposed on the fluid delivery device.

15. The fluid occlusion detection method of claim 12, wherein the parameter value related to the change detection sensor is a resistance of a resistor provided to the change detection sensor, and

a change in the resistance of the resistor is extracted when a shape of the resistor disposed on the structure is deformed based on the shape deformation of the structure disposed on the fluid delivery device.

16. The fluid occlusion detection method of claim 12, wherein the parameter value related to the change detection sensor is a magnetic field of a magnetic body provided to the change detection sensor, and

a change in the magnetic field of the magnetic body is extracted when a distance between the magnetic body and a magnetic field sensor for measuring a magnetic field in a surrounding region of the magnetic body varies based on the shape deformation of the structure disposed on the fluid delivery device.

17. The fluid occlusion detection method of claim 12, wherein the parameter value related to the change detection sensor is a reflexibility of a reflective film provided to the change detection sensor, and

a change in the reflexibility of the reflective film is extracted when the structure contacts one side of the reflective film based on the shape deformation of the structure disposed on the fluid delivery device.

18. The fluid occlusion detection method of claim 12, wherein the parameter value related to the change detection sensor is a frequency of a piezo panel provided to the change detection sensor, and

a change in the frequency of the piezo panel is extracted when the structure contacts one side of the piezo panel based on the shape deformation of the structure disposed on the fluid delivery device.

19. The fluid occlusion detection method of claim 12, wherein the parameter value related to the change detection sensor is a current of a conductor provided to the change detection sensor, and

a change in the current of the conductor is extracted when the conductor disposed in a surrounding region of the structure is open-circuited based on the shape deformation of the structure disposed on the fluid delivery device.

20. The fluid occlusion detection method of claim 12, wherein the parameter value related to the change detection sensor provided to the surrounding region of the fluid delivery device is measured only when fluid flows inside the fluid delivery device.