PORTABLE ELECTROCARDIOGRAPH WITH A NEUTRAL ELECTRODE

• US 20090137891A1
• Filed: 04/23/2007
• Published: 05/28/2009
• Est. Priority Date: 04/25/2006
• Status: Active Grant

• Current Assignee: Beijing Choice Electronic Technology Co., Ltd. (Tianjin Chase Sun Pharmaceutical Co., Ltd.)
• Original Assignee: Beijing Choice Electronic Technology Co., Ltd. (Tianjin Chase Sun Pharmaceutical Co., Ltd.)
• Inventors: Wang, Weihu
• Granted Patent: US 8,095,199 B2
• Time in Patent Office: Days
• US Class Current: 600/384
• CPC Class Codes: A61B 2560/0462 Apparatus with built-in sensors
• CPC Class Codes: A61B 2560/0468 Built-in electrodes
• CPC Class Codes: A61B 5/024 Detecting, measuring or recording pulse rate or heart rate A61B5/0205, A61B5/021 take precedence
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/332 Portable devices specially adapted therefor
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6838 Clamps or clips

Abstract

A portable electrocardiograph, characterized in that a clamping cover which tends to close automatically is provided on one end of a housing; a finger hole is provided between the clamping cover and the housing; a lower half of the inner wall of the finger hole is defined on the housing; an upper half of the inner wall of the finger hole is provided on the clamping cover; the lower half of the inner wall is provided with a first electrode; the other end of the housing is provided with a second electrode; and the back face of the housing is provided with a third electrode, in which the first electrode or the third electrode is a neutral electrode. According to the present invention, at least one portion of at least one of the middle finger, the so-called ring finger, and the little finger of the user'"'"'s hand for grasping the electrocardiograph can contact the neutral electrode, such that the error of the measured result caused by electrical potential fluctuation on the measured person'"'"'s body can be eliminated.

Claims

1. A portable electrocardiograph, characterized in that a clamping cover (11) which automatically tends to close is provided on one end of a housing (1);

a finger hole (6) is provided between the clamping cover (11) and the housing (1);

a lower half (14) of the inner wall of the finger hole (6) is defined on the housing (1); and

an upper half (15) of the inner wall of the finger hole (6) is defined on the clamping cover (11);

the lower half (14) of the inner wall is provided with a first electrode (7), the other end of the housing (1) is provided with a second electrode (10), and the back face of the housing (1) is provided with a third electrode (300), in which the first electrode (7) or the third electrode (300) is a neutral electrode.

2. The portable electrocardiograph according to claim 1, characterized in that the third electrode (300) is in an area of one-quarter cirque, elongated shape, rectangular, oval, circular, triangle, L-shape, or reversed L-shape.

3. The portable electrocardiograph according to claim 1, characterized in that the second electrode (10) includes two parts, one of which is the neutral electrode.

4. The portable electrocardiograph according to claim 1, characterized in that a photoelectric receiving cell (8a) is provided in the inner wall of the lower half (14) of the finger hole (6);

and a light emitting diode (8) is provided at the corresponding position of the inner wall of the upper half (15) of the finger hole (6).

5. The portable electrocardiograph according to claim 1, characterized in that the clamping cover (11) is closed with the housing (1) by means of a torsion spring (13);

and the torsion spring (13) is sleeved on a shaft (12) which is connected with the housing (1).

6. The portable electrocardiograph according to claim 1, characterized in that the clamping cover (11) is closed with the housing (1) by means of a U-shaped spring sheet.

7. The portable electrocardiograph according to claim 1, characterized in that the first electrode (7) of the lower half (14) of the inner wall is of a semi-oval shape;

and a soft material layer (9) of a semi-oval shape is covered on the inner wall of the upper half (15).

8. The portable electrocardiograph according to claim 1, characterized in that the top face of the photoelectric receiving cell (8a) is provided to be at the same surface as the top face of the first electrode (7);

and the top face of the light emitting diode (8) is slightly indented into the surface of the soft material layer (9).

9. The portable electrocardiograph according to claim 1, characterized in that the housing has a data transfer interface with an external storage device.

10. The portable electrocardiograph according to claim 1, characterized in that the second electrode (10) is provided to protrude out of the other end of the housing (1).