Radial artery blood pressure waveform measuring device

• US 9,901,263 B2
• Filed: 07/24/2015
• Issued: 02/27/2018
• Est. Priority Date: 11/04/2014
• Status: Active Grant

• Current Assignee: National Taiwan University of Science and Technology
• Original Assignee: National Taiwan University of Science and Technology
• Inventors: Hsiu, Hsin
• Primary Examiner(s): Weston, Tiffany
• Assistant Examiner(s): TRAN, THO Q
• Application Number:
  US14/807,898
• Publication Number:
  US 20160120419A1
• Time in Patent Office: 949 Days
• CPC Class Codes: A61B 2562/14 Coupling media or elements to improve sensor contact with skin or tissue
• 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 5/6831 Straps, bands or harnesses

Abstract

A radial artery blood pressure waveform measuring device includes a stress sensor, a stress concentrating elastic structure, and a stress guiding elastic member. The stress sensor is in contact with a skin surface of a wrist corresponding to a position of a radial artery. The stress concentrating elastic structure is disposed on the stress sensor. The stress guiding elastic member has a top surface, a bottom surface, and at least one side surface. The bottom surface is disposed on the stress concentrating elastic structure, and an area of the bottom surface is greater than an area of a horizontal section of the stress concentrating elastic structure.

Claims

1. A radial artery blood pressure waveform measuring device, comprising:

a stress sensor configured for contact with a skin surface of a wrist corresponding to a position of a radial artery;

a stress concentrating elastic structure disposed on the stress sensor;

a stress guiding elastic member having a top surface, a bottom surface, and at least one side surface, wherein the bottom surface is disposed on the stress concentrating elastic structure, and an area of the bottom surface is greater than an area of a horizontal section of the stress concentrating elastic structure; and

an elastic stress bugger disposed below the bottom surface and on one side of the stress concentrating elastic structure, for buffering a contractile force applied on the side surface by the elastic band, wherein the elastic stress buffer is formed of a sponge material.

2. The radial artery blood pressure waveform measuring device of claim 1, further comprising an elastic band surrounding the stress guiding elastic member and being configured to surround the wrist, and capable of applying the contractile force on the wrist, the top surface, and the side surface.

3. The radial artery blood pressure waveform measuring device of claim 1, wherein a Modulus of Elasticity of the elastic stress buffer is less than a Modulus of Elasticity of the stress guiding elastic member.

4. The radial artery blood pressure waveform measuring device of claim 1, wherein a side profile of the stress guiding elastic member is trapezoidal in shape.

5. The radial artery blood pressure waveform measuring device of claim 1, wherein the stress guiding elastic member is formed of a foam material.

6. The radial artery blood pressure waveform measuring device of claim 1, wherein the stress concentrating elastic structure comprises:

a stress applying layer disposed on the stress sensor;

a buffer layer disposed on the stress applying layer; and

a stress receiving layer disposed on the buffer layer.

7. The radial artery blood pressure waveform measuring device of claim 6, wherein each of the stress applying layer and the stress receiving layer is formed of a foam material.

8. The radial artery blood pressure waveform measuring device of claim 6, wherein the buffer layer is formed of a sponge material or rubber.