JP2000051165A - Cuff for pulse wave detection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cuff for pulse wave detection which is easily sealable, has little inconvenience such as moisture invading into a pressurized bag and no fear of electric shock. SOLUTION: This cuff for pulse wave detection comprises a pressurized air bag 2 to press a human body such as fingers, or the like, a tube 3 to be connected with and supply pressurized air to the pressurized air bag 2, an optoelectric element 4 for pulse wave detection attached to the pressurized air bag 2, and a lead wire 5 embedded in a tube 3 to transmit pulse wave signals and one end of which is connected to the optoelectric element 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cuff for detecting a pulse wave.

[0002]

2. Description of the Related Art A conventional cuff for detecting a pulse wave described in Japanese Patent Application Laid-Open No. 63-275321 discloses a pressurized air bag for pressing a human body such as a finger, and a pressurized air bag connected to a pressurized air bag to supply pressurized air. A tube, a pulse wave detecting photoelectric element incorporated in the pressurized air bag, and a lead wire having one end connected to the photoelectric element and transmitting a pulse wave signal. The bag has been penetrated and deployed.

[0003]

However, in the pulse wave detection cuff described in the above-mentioned publication, the lead wire and the tube are separately connected to the cuff, so that the connection portion is provided at two places and the seal is troublesome. Or, if the airtightness of the connection portion is incomplete, moisture or the like may enter the pressurized air bag from the connection portion, or the lead wire may be exposed at the portion coming out of the cuff to cause electric shock. .

Therefore, the present invention provides a pulse wave detection cuff which solves the above-mentioned problems, is easy to seal, has little trouble that moisture or the like enters the pressurized air bag, and does not cause electric shock. It is intended to be.

[0005]

According to the first aspect of the present invention,
A pressurized air bag that presses against a human body such as a finger, a tube connected to the pressurized air bag to supply pressurized air, a photoelectric element for pulse wave detection attached to the pressurized air bag, and one end of the photoelectric element And a lead wire for transmitting a pulse wave signal, wherein the lead wire is built in the tube.

In the pulse wave detection cuff according to the first aspect, since the lead wire is incorporated in the tube, the tube is connected to the measuring instrument main body and branched from the tube in the measuring instrument main body. It is sufficient to take out the lead wire. Then
Since the connection part of the cuff is only one place of the tube, the sealing becomes easy, and the trouble that moisture or the like enters the pressurized air bag is reduced. Also, since the lead wire is built in the tube, there is no danger of electric shock.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of a cuff for detecting a pulse wave, wherein (a) is a perspective view, (b) is a developed view, and (c).
The figure is a cross-sectional view taken along line AA of FIG. In FIG. 1, reference numeral 1 denotes a pulse wave detection cuff. The pulse wave detection cuff 1 supplies a pressurized air bladder 2 for pressing a human body such as a finger, and a pressurized air bladder connected to the pressurized air bladder 2. Tube 3
It comprises pulse wave detecting photoelectric elements 4 and 4 mounted in the pressurized air bag 2 and a lead wire 5 having one end connected to the photoelectric element 4 and transmitting a pulse wave signal.

In the cuff 1, the lead wire 5
Built in tube 3. And this lead wire 5
Is connected to the photoelectric element 4, while the other end is connected to the electronic circuit of the meter main body from one side of the meter main body (not shown) which is branched into two parts through the tube 3.
The other side of the tube 3 is connected to a pressurizing pump (not shown), and pressurized air is supplied to the pressurized air bag 2.

The pressurized air bag 2 is shown in FIG.
(C) As shown in the figure, a rectangular polyurethane sheet having a thickness of 0.05 mm is folded in half, and its outer peripheral edge is adhered to form a bag, which is wound into a cylindrical shape, and a finger or the like is applied thereto. To press. The inner peripheral surface 21 side in contact with a finger or the like has a bellows shape, and the tube 3 is joined to the outer peripheral surface 22 side.
In addition, the said polyurethane sheet emits light of the photoelectric element 4,
The color is transparent for light reception, and the thickness is as thin as 0.05 mm to apply pressure evenly.

The blood pressure is measured by sending pressurized air from a pressurizing pump through a tube 3 into a pressurized air bladder 2 and pressing a finger inserted into a cylindrical cuff 1 to occlude a finger artery. I do.
The photoelectric element 4 mounted in the pressurized air bladder 2 includes a light emitting element and a light receiving element. The light emitting element receives light emitted from the light emitting element, and outputs a pulse wave signal corresponding to the received light amount to a lead wire. Send out through 5. Then, the instrument main body determines the continuous blood pressure, the maximum blood pressure, and the minimum blood pressure using an appropriate algorithm.

(Operation of the Embodiment) In the cuff 1 for detecting a pulse wave according to the present embodiment, the lead wire 5 is incorporated in the tube 3, so that the tube 3 is connected to the main body of the measuring instrument, and The lead wire 5 may be taken out of the tube 3 by branching out from the inside. Then, the connection part of the cuff 1 is 1 of the tube 3 only.
Since it is a place, sealing becomes easy, and the inconvenience that moisture etc. enters into the pressurized air bag 2 is reduced. Further, since the lead wire 5 is incorporated in the tube 3, there is no possibility of electric shock. Furthermore, since the cuff 1 has only one seal, the process can be simplified and the cost can be reduced.

FIG. 2 is a sectional view showing another embodiment of the cuff for detecting a pulse wave. Here, the description of the same components as those described above is omitted. In the present embodiment, the photoelectric element 4 is provided on the inner peripheral surface 21 side of the pressurized air bag 2. Therefore, since the photoelectric element 4 is closer to a human body such as a finger, loss in light emission and light reception is reduced. Therefore, a pulse wave can be detected more accurately.

[0013]

According to the pulse wave detecting cuff according to the first aspect of the present invention, since the lead wire is incorporated in the tube, the connection portion at the cuff can be easily sealed with only one tube, and the compressed air can be easily compressed. The airtightness inside the bag is well maintained. Also, there is no risk of electric shock. Further, costs can be reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a cuff for detecting a pulse wave according to an embodiment of the present invention.

FIG. 2 is a sectional view showing another embodiment of a cuff for detecting a pulse wave.

[Description of sign]

 1 pulse wave detection cuff 2 pressurized air bag 3 tube 4 photoelectric element 5 lead wire

Claims (1)

[Claims] 1. A pressurized air bag for pressing a human body such as a finger, a tube connected to the pressurized air bag to supply pressurized air, a photoelectric element for pulse wave detection attached to the pressurized air bag, A cuff for pulse wave detection, comprising: a lead connected at one end to a photoelectric element and transmitting a pulse wave signal, wherein the lead is incorporated in a tube.