PULSE OXIMETER

• US 20120016219A1
• Filed: 02/24/2010
• Published: 01/19/2012
• Est. Priority Date: 02/24/2010
• Status: Active Grant

• Current Assignee: Takahiro Fujii
• Original Assignee: Takahiro Fujii
• Inventors: Fujii, Takahiro
• Granted Patent: US 9,743,867 B2
• Time in Patent Office: Days
• US Class Current: 600/324
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6838 Clamps or clips

Abstract

The present invention provides a pulse oximeter of the portable type, which is possible to carry around and to use widely regardless of the adult, the infant, the newborn baby, and which can keep the finger still for performing the precise measurement. The pulse oximeter 100 comprises a measurement cavity 110 for accepting the examined portion (for example finger) of the subject, a measurement device 120 including a light emitting part 121 and a photo detecting part 122 facing between the measurement cavity 110, a filling element 140 formed from a material that the light used for the measurement can penetrate. The height and the curvature of the inner surface of the filling element 140 is larger than that of the outer surface of the filling element 140. The filling element 140 converts the height and the curvature of the inner space. The filling element 140 fills the gap space between the examined portion of the subject and the inner space of the measurement cavity 110, wherein the examined portion of the subject is pressed by the filling element 140 so as not to move freely in the measurement cavity.

Claims

1. A pulse oximeter of a clip pinch type comprising;

a housing including a first body and a second body separated from each other,

an adjustment mechanism for adjusting the distance between the first body and the second body,

a measurement mechanism including a light emitting part and a photo detecting part installed in the first body and the second body and facing each other,

a measurement cavity formed as a gap between the first body and the second body facing each other, an inner space opening vertically when accepting an examined portion of a subject, the inner space closing vertically after setting the examined portion of the subject,

further comprising a filling element formed from an elastic material that the light used for the measurement can penetrate, whose shape is curved shape, a curvature of a curved inner surface becoming larger than that of a curved outer surface and a thickness of the edge portion being thicker than that of the central portion, the filling element filling the gap space between the examined portion of subject and the inner space of the measurement cavity.

3. A pulse oximeter according to claim 1, in which the filling element includes a replaceable structure fit to the measurement cavity, the filling element being replaceable for selecting thickness and curvature according to the size of the examined portion of the subject.

4. A pulse oximeter according to claim 1, in which only the portion of the filling element corresponding to the light emitting part and the photo detecting part is formed from the material that passes the light used for the measurement by the measurement device, and the remained of the filling element is formed from a material by which the light used for the measurement can be absorbed.

6. A pulse oximeter according to claim 1, in which the filling element is made of a silicone putty material.

2. (canceled)

5. (canceled)