PRESSURIZING MODULE AND BLOOD PRESSURE MEASURING DEVICE INCLUDING THE SAME

• US 20100121206A1
• Filed: 09/16/2009
• Published: 05/13/2010
• Est. Priority Date: 11/12/2008
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: BAE, Sang-kon, KIM, Youn-ho, SHIN, Kun-soo, KIM, Jong-pal
• Granted Patent: US 8,591,424 B2
• Time in Patent Office: Days
• US Class Current: 600/493
• CPC Class Codes: A61B 5/02141 Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits A61B5/02233, A61B5/0235 take precedence
• CPC Class Codes: A61B 5/02225 using the oscillometric method
• CPC Class Codes: A61B 5/02233 Occluders specially adapted therefor tourniquets A61B17/132

Abstract

Provided are a pressurizing module and a blood pressure measuring device including the pressurizing module. The pressurizing module includes a driving block optionally discharging compressed air; and a bellows-type airbag formed to overlap with the driving block, and comprising an inner space accommodating the compressed air discharged from the driving block, a plurality of wrinkles flattened so as to expand the inner space, and a pressurizing surface formed at an end portion of the wrinkles and spaced apart from the driving block as the inner space expands.

Claims

1. A pressurizing module comprising:

a driving block for optionally discharging compressed air; and

a bellows-type airbag formed to overlap the driving block;

the bellows-type airbag comprising an inner space for accommodating the compressed air discharged from the driving block;

a plurality of wrinkles flattened so as to expand the inner space, the plurality of wrinkles being disposed around the inner space; and

a pressurizing surface formed at an end portion of the wrinkles and spaced apart from the driving block as the inner space expands.

2. The pressurizing module of claim 1, wherein the driving block comprises a motor having a rotation shaft, a cam for converting rotary motion of the rotation shaft into a reciprocating motion in a direction perpendicular to an extension direction of the rotation shaft, a cylinder having a piston which is connected to the cam and reciprocates, an injecting path formed so that the compressed air generated by the reciprocating motion of the piston moves toward the bellows-type airbag, and a countercurrent preventing valve for preventing a countercurrent of air from flowing along the injecting path to the cylinder.

3. The pressurizing module of claim 2, wherein the driving block further comprises a discharging path that branches off the injecting path, and a decompression valve formed at an end portion of the discharging path.

4. The pressurizing module of claim 2, wherein the driving block further comprises a deceleration unit for reducing a rotation speed of the rotation shaft and transferring the rotation to the cam.

5. The pressurizing module of claim 4, wherein the deceleration unit comprises a first gear coupled to the rotation shaft and rotating at the same speed as the rotation shaft, and a second gear engaged with the first gear;

the second gear having a diameter greater than that of the first gear.

6. The pressurizing module of claim 1, further comprising a coupling block having a connection path;

the coupling block being interposed between the driving block and the bellows-type airbag and induces the compressed air discharged from the driving block to flow into the inner space of the bellows-type airbag.

7. The pressurizing module of claim 6, wherein the coupling block comprises a hole;

the hole allowing airflow between the connection path and the inner space of the bellows-type airbag;

the hole being disposed in a manner so as not to overlap the wrinkles.

8. The pressurizing module of claim 6, wherein the coupling block further comprises a buffer chamber inside the coupling block in order to suppress a fast inflow of air into the inner space of the bellows-type airbag.

9. A blood pressure measuring device for pressurizing a blood vessel of a patient, the blood pressure measuring device comprising:

a pressure sensor attached to a pressurizing surface of the bellows-type airbag and detecting a sphygmus wave and pressure of a blood vessel from the blood vessel;

a blood pressure calculation processor calculating blood pressure of the patient on the basis of the sphygmus wave and the pressure of the blood vessel detected in the pressure sensor; and

a pressurizing module comprising;

a driving block for optionally discharging compressed air; and

a bellows-type airbag formed to overlap the driving block;

the bellows-type airbag comprising an inner space for accommodating the compressed air discharged from the driving block;

a plurality of wrinkles flattened so as to expand the inner space, the plurality of wrinkles being disposed around the inner space; and

a pressurizing surface formed at an end portion of the wrinkles and spaced apart from the driving block as the inner space expands.

10. The blood pressure measuring device of claim 9, wherein the blood vessel is a radial artery inside a patient'"'"'s wrist.

11. The blood pressure measuring device of claim 10, further comprising a wrist band surrounding the patient'"'"'s wrist so as to attach the blood pressure measuring device to the patient'"'"'s wrist.