KR200343805Y1 - A sensor unit of a instrument for measuring oxygen-saturation - Google Patents

Abstract

Disclosed is a sensor unit of an oxygen saturation measuring device that can be used regardless of the size of the human body and has an improved fit. The sensor unit 100 is provided with a light emitting device 161 and the upper cover 110 provided to cover the upper surface of the finger 200, the light receiving device 162 is provided in a position opposite to the light emitting device and the A lower cover 120 provided to cover the other surface, and a support 130 supporting upper and lower covers and forming an entrance of the finger 200, and on one side of the upper cover 110, a measurement basic body (not shown). ) And a wire 140 and a connector 150 for electrically connecting the light emitting element 161 and the light receiving element 162 are connected. The upper cover 110 and the lower cover 120 are positioned up and down, the upper and lower surfaces of the lower cover facing each other is formed with a recessed recess 121. Such a sensor unit has a structure in which the upper and lower covers are connected to the support, so the structure is simple and easy to wear, and it is worn under the action of uniform pressure when worn on the finger or toe by the coupling angle and the recess. Therefore, the wearing feeling is improved, and in particular, the biocompatible silicone material enables the user to have a stable wearing.

Description

Sensor unit of a instrument for measuring oxygen-saturation

The present invention relates to an oxygen saturation measuring device that can be attached to the finger or toe of the patient to measure the oxygen saturation or pulse of the blood, and in particular, it can be universally worn and simple structure despite the difference in the size of the patient's measurement site. To a sensor unit of an improved oxygen saturation meter.

In general, the oxygen saturation measuring device is a medical measuring device that checks various checkpoints such as oxygen saturation and pulse rate by checking the light absorption of arterial blood flowing to the hand, toe or earlobe of a patient.

One example of such an oxygen saturation meter is schematically illustrated in FIG. 1. This shows the sensor unit 10 which is connected to the cable 14 to the measuring base (not shown), wherein the adhesive 13 is applied to the base 15 and the light emitting element 12 and the light receiving element on the adhesive 13. (11) has a structure arranged at regular intervals.

The sensor unit 10 places the patient's finger 1 as shown, and then wraps the outer base 15 so that the inner base 13 to which the adhesive is applied is attached to the periphery of the finger 1. The element 11 and the light receiving element 12 are positioned at mutually opposite positions with the finger 1 interposed therebetween.

In this state, when the measuring base is operated, it is possible to measure the amount of oxygen or pulse in the blood by detecting the light of the light emitting element 11 that has passed through the finger 1.

However, the conventional sensor unit as described above is cumbersome to use due to the attachment of foreign substances by the use of the adhesive (1), sweat and odor occurs during long-term wear is not good to wear.

In addition, since the installation interval of the light emitting element 11 and the light receiving element 12 is set, various types of sensor units in which the distance between the two elements 11 and 12 differ according to the size of the finger of the patient are required. It is disadvantageous in cost reduction.

An oxygen saturation sensor for solving such a problem is disclosed in Korean Utility Model Registration No. 0195400, an example of which is shown in FIG.

The upper and lower forefingers 51 and 52 are rotatably connected by the hinge part 50, and a thick finger T such as a thumb is inserted between the upper and lower tongs 51 and 52 so that the upper and lower tongs 51 and 52 are rotatably connected. When the lower tongs 51 and 52 are opened, the upper blocking wall formed on the upper and lower tongs 51 and 52 so as to block light flowing from the side and the rear between the upper and lower tongs 51 and 52, respectively (3) and the lower blocking wall 4 are formed.

The upper and lower forceps 51 and 52 are provided with an elastic material 54 in direct contact with the finger T, and a spring 55 for applying elasticity to close the upper and lower forceps 51 and 52 is installed. The light emitting element 56 and the light receiving element 57 are provided in opposing portions of the upper and lower tongs 51 and 52.

In the oxygen saturation sensor as described above, light is blocked from the outside by the blocking walls 3 and 4 inside the upper and lower tongs 51 and 52. When the light emitting device 56 operates in this state, the external light It is possible to transmit the correct amount of light passing through the finger (T) without the addition or subtraction or interference of the light receiving element 57, thereby improving the accuracy and reliability of the inspection.

Although other examples of sensor units are disclosed in US Pat. No. 4,825,872 and US Pat. No. 5,035,243, they are formed in a form that encloses a measurement site of the body, that is, in a closed structure, resulting in odors and measurement errors due to sweat generation. Not only does it lower the fit.

In addition, oxygen saturation sensors as described above have the following problems.

First, due to the adoption of the upper and lower tongs (51, 52) and the spring (55) separated from each other, the number of parts to be managed and assembly is cumbersome.

Second, the upper and lower tongs 51, 52 have a structure in which the hinge rotates about the hinge portion 50, and the finger is positioned at an arbitrary point of the pivoting portion so that the finger is pressed. The patient's fit decreases.

Third, frequent detachment of the sensor unit due to unconscious behavior of the patient occurs due to the deterioration of the compression caused by the spring connection of the upper and lower barrier walls.

Fourth, since it is difficult to observe the position of the sensor from the outside due to the built-in sensor, it is difficult to accurately position the measurement portion at the position corresponding to the sensor when the finger is mounted.

Fifth, when the user wears the measurement part, for example, the entrance part is opened and the other side is closed, the finger is long or the nail is long, it is inconvenient to wear.

Sixth, by forming a closed structure, that is, in a closed structure to form a measurement error due to the occurrence of sweat, but also reduces the fit.

The present invention has been created to solve the above problems and has the following objectives.

First, it is to provide a sensor unit of an oxygen saturation measuring device that is improved in structure and easy to wear.

Second, to provide a sensor unit of the oxygen saturation measuring device to improve the wearing comfort by wearing a uniform and stable pressing force when wearing the measurement site.

Third, the present invention provides a sensor unit of an oxygen saturation measuring device that can be improved to remove and apply obstacles to wear according to the size and length of the hands and toenails of various patients.

Fourth, the present invention provides a sensor unit of an oxygen saturation measuring device capable of accurate measurement by minimizing interference from ambient light when the oxygen saturation measuring device and the sensor unit are interlocked.

Fifth, to provide a sensor unit of the oxygen saturation measuring device to reduce the odor caused by the sweat generated in the body during the measurement and to improve the fit.

Sixthly, the present invention provides a sensor unit of an oxygen saturation measuring device which greatly reduces the occurrence of measurement errors due to electromagnetic waves by changing the structure of the light receiving element.

Seventhly, the present invention provides a sensor unit of an oxygen saturation measuring device that makes it easy to connect and disconnect the sensor unit to the measuring body.

1 is a schematic view showing a sensor unit of a conventional oxygen saturation measuring device,

2 is a schematic view showing another conventional sensor unit,

3 is a perspective view of the present invention the sensor unit,

Figure 4 is a side view showing the main part wearing state of the sensor unit of the present invention,

5 is a perspective view showing the lower cover,

6 is a side view showing an extract of the support,

7 is a schematic cross-sectional view of FIG. 4;

8 is a schematic view showing a light receiving element employed in the sensor unit of the present invention.

* Explanation of symbols for main parts of the drawings

Sensor unit 110.Top cover

112b, 122b ... light shield wings 116,126 ... reinforcement ribs

117,127 Leaf spring 120 Lower cover

130 ... support 140 ... wires

150 ... Connector 161 ... Light Emitting Element

162.Receiver

The present invention to achieve the above object is provided with a light emitting device is provided with a top cover to cover one side of the body, and a light receiving element is provided in a position opposite to the light emitting device and provided with a lower cover to cover the other surface of the body In the sensor unit of the oxygen saturation measuring device for measuring the light transmittance of the light emitting element that has passed through the body to measure the oxygen saturation in the blood,

An entrance portion through which the measurement part of the body passes is formed, and each end of the upper and lower covers is fixed and has a support through which an electric wire connecting the light emitting element and the light receiving element passes.

The upper cover and the lower cover is positioned up and down and the left and right sides are open to the outside, and the other end of the upper and lower cover is formed to be free end separated from each other between the upper and lower cover from the support to the free end side The space is formed to narrow gradually,

The support and the upper, lower cover is characterized in that formed of a stretchable elastic material.

In addition, the surface facing each other of the upper, lower cover is characterized in that the recessed recessed portion is formed.

In addition, the subject innovation unit has a reinforcing rib is further formed on the outer peripheral surface of the upper, lower cover, the reinforcing rib has a structure in which a spring spring that can be elastically restored.

On both sides of the upper and lower covers, light blocking wings for blocking external light are formed to extend, so that accurate measurement is possible.

In addition, the support is located in the upper and lower portions of the access portion is formed recessed, the convex portion is formed convex adjacent to both sides of each recess portion and presses a portion of the measurement site, and the left and right sides of the entry portion It is a structure in which the extended part which forms a space is formed.

The upper and lower cover and the support is formed of a biocompatible silicone material, and the display unit for displaying the position of the light emitting element and the light receiving element is displayed on the upper and lower cover.

In addition, the sensor unit of the present invention is provided with a connector that is connected to the measurement main body at the end of the wire, the auxiliary handle is formed extending.

The light receiving element may include a light receiving unit, a terminal connected to the light receiving unit, and a shielding band for shielding external electromagnetic waves around the light receiving unit.

According to the features of the present invention, the sensor unit of the present invention is the free end of the upper, lower cover is formed to be separated from each other and the left and right sides are open to the outside structure can be measured regardless of the body length of the measurement site, light blocking Since external light is blocked by the wing, it enables precise measurement and suppresses moisture caused by sweat generated in the body during measurement.

In addition, the support and the recessed recessed portions of the upper and lower covers enable stable coupling along the curved surface of the measurement site, for example, a finger.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The sensor unit of the present invention is electrically connected to a monitor unit employing a controller and an indicator that form a measuring body of a medical oxygen saturation meter, and is electrically connected. The light source is transmitted through a portion of the body through which blood flows while the heart is beating. By measuring the amount of light, the amount of oxygen saturation or pulse rate in the blood is measured to examine the patient's physical condition.

3 and 4 showing the sensor unit 100 of the present invention, it is provided with a light emitting element 161 and the upper cover 110 is provided to cover one surface of the body, for example, the upper surface of the finger 200. And, a light receiving element 162 is provided in a position facing the light emitting element 161 and the lower cover 120 is provided to cover the other surface of the finger 200, and the upper and lower cover 110, 120 It is provided with a support 130 for forming the entry portion of the finger 200, one side of the upper cover 110, the measuring base (not shown) and the light emitting element 161 and the light receiving element 162 electrically The electric wire 140 and the connector 150 for connecting are connected.

The upper cover 110 and the lower cover 120 has a structure facing up and down and the left and right are open to the outside, and the upper and lower cover 110, the surface facing each other is shown in Figure 5 As described above, the recessed recess 121 is formed. Since the upper and lower covers 110 and 120 have approximately the same structure, separate illustration of the upper cover 110 is omitted.

The support 130 has an entry portion 131 through which the measurement part (finger 200) of the body is formed, and one end of the upper and lower covers 110 and 120 is fixed and the light emitting device 161 is provided. And a through hole through which the wire 140 electrically connecting the light receiving element 162 is formed.

At the end of the wire 140 is provided with a connector 150 to be connected to the measuring body (not shown), the connector 150 is formed with an auxiliary handle 155 is extended to facilitate the connection and disconnection work.

In addition, as shown in FIG. 6, the support 130 is located above and below the entry portion 131 and is recessed and formed recessed portions 133a and 133b, and each recessed portion 133a ( Convex portions 134a, 134b, 134c, and 134d that are formed convexly adjacent to both sides of the 133b and pressurize a portion of the measurement portion, and expansion portions 135a that form spaces on left and right sides of the entry portion 131. And 135b.

The recesses 133a, 133b and the convex parts 134a, 134b, 134c, and 134d have curvatures corresponding to the outer circumferential shape of the finger 200, so that the fit is improved by uniform compression.

In addition, the extended portions 135a and 135b make the entry smoothly while elastically expanding when the thick finger 200 enters.

As shown in FIGS. 4 and 7, the other ends of the upper and lower covers 110 and 120 are separated from each other and formed as free ends, and the upper and lower covers are supported from the support 130 to the free ends. The space between 110 and 120 is formed to narrow gradually. In this case, the entered finger 200 is elastically pressed to enable stable wearing.

In particular, in the embodiment of the present invention by forming the support 130 and the upper and lower cover 110, 120 made of a silicon material suitable for the living body, not only elasticity is given but also soft to the touch when worn to stabilize the medical Keep wearing

In addition, as shown in Figure 7, the upper and lower cover 110, 120 is formed on the outer circumferential surface of the reinforcing ribs (116, 126), and the reinforcing ribs (116, 126) is an elastic restoration The plate springs 117 and 127 are built in to reinforce the compressive strength to enable stable wearing.

In addition, as shown in FIGS. 3 and 5, light blocking wings 112b and 122b for blocking external light are formed on both side surfaces of the upper and lower covers 110 and 120.

On the other hand, the outer peripheral surface of the upper and lower cover 110, 120 of the sensor unit 100 of the present invention embodiment the display unit 115, 125 so as to know the position of the light emitting device 161 and the light receiving device 162 from the outside ) Is displayed. In this case, when the finger 200 enters through the entry part 131, trial and error that excessively enters so as to pass the position of each element 161 and 162 is alleviated.

In addition, the light receiving element 162 employed in the sensor unit of the present invention, as shown in FIG. 8, shields external electromagnetic waves around the light receiving unit 162a, the terminal 162b connected to the light receiving unit, and the light receiving unit. The shield strip 162c is formed. Such a light receiving element 162 can significantly reduce the measurement error due to electromagnetic waves.

Meanwhile, in the above embodiment, as shown in FIG. 3, a coupling ring 170 may be further employed to couple the free ends of the upper and lower covers 110 and 120 in a state in which the measurement portions of the body are coupled. . In this case, the coupling ring 170 may be integrally formed on the upper and lower covers 110 and 120. In this case, the coupling ring portion is formed of a material (eg, silicon) capable of elastic restoration.

The sensor unit 100 as described above is to measure the body part of the patient, for example, by receiving the tip of the finger 200, as shown in Figure 4, when worn, upper, lower cover 110, 120 It is elastically contracted by the coupling angle with the support 130 and the expansion and contraction of the outer surface to have an initial position close to each other, and by the entry of the finger 200, the upper and lower cover 110, 120 and the support 130 of Extensions 135a and 135b allow for the acceptance of fingers 200 of various sizes.

In the received finger 200, the upper and lower covers 110 and 120 are measured at restoring force to shrink by maintaining the coupling angle between the upper and lower covers 110 and 120 and the support 130 of a silicon material having elasticity. It will be maintained in close contact with the, at this time, the upper and lower cover 110, 120 by the leaf springs 117, 127 built in the more stable coupling force is maintained.

At the same time, a uniform pressure is applied to the finger 200 by the curved surfaces of the recesses 121, 133a and 133b of the upper and lower lids 110 and 120 and the support 130 to provide a stable fit. .

As described above, in the state in which the finger 200 is worn on the sensor unit 100, the light emitting device 110 contacts the back of the finger 200, and the light receiving device 120 contacts the bottom surface of the finger 200. Done. In this state, power is applied and light is emitted from the light emitting device 110 to penetrate the finger 200, and the transmitted light is received by the light receiving device 120 to sense the amount of light transmitted. At this time, the electromagnetic wave is shielded by the shield band 162c of the light receiving element 162, thereby enabling accurate measurement.

On the other hand, by adjusting the display portion 115 and 125 to be visually positioned at the position of the elements 161 and 162 when the finger 200 is worn, regardless of the size of the finger 200 and the size of the nail Excessive entry is prevented to allow measurement of oxygen saturation at the appropriate location.

Meanwhile, in the embodiment of the present invention, two light emitting devices 161 are provided, one for emitting infrared light (660 nm) and the other for emitting ultraviolet light (940 nm). The amount of light transmitted depends on the amount of oxygen in the blood. For example, when the heart passes through the blood-red blood, which contains a lot of oxygen, it absorbs a lot of red light. As it passes through the blood, it absorbs more of the infrared light.

Oxygen saturation (SpO2), pulse rate or pulse intensity in blood is measured using the difference in absorption coefficients according to the light sources of oxyhemoglobin and deoxyhemoglobin.

The sensor unit of the present invention as described above is pushed by the restoring force of the upper and lower cover forming a coupling angle with the support by sliding the finger through the center of the support 130, the upper cover, lower cover 110, 120. Since it is possible to wear, it is easy to wear, and by pressing the fingers evenly by the elastic part of both ends of the upper, lower cover improves the wearing feeling.

It is needless to say that the present invention as described above is not limited to the above embodiments and can be carried out with many modifications without departing from the spirit and scope of the present application.

First, the structure is simple and easy to wear by having a structure in which the upper, lower cover and the support is integrated.

Second, the wearing angle is improved by wearing a uniform action force when worn on the fingers or toes by the coupling angle of the support and the upper and lower cover and the recess portion, and in particular, made of a silicone material to enable the user to wear stable .

Third, regardless of the size of the measurement site, the gap between the upper and lower cover is opened and closed and automatically adjusted, so it can be applied to various body sizes of patients.

Fourth, unlike the use of conventional springs, such as foreign matters when the cleaning operation is cumbersome, the upper and lower cover is formed in an open type integrally with the support to facilitate the cleaning operation when inflow of foreign matters.

Fifth, the upper and lower covers, which are provided with the light emitting element and the light receiving element, have a structure in which the upper and lower covers are stretched in the up and down direction according to the body size, thereby making it unnecessary to adjust the position of the elements according to the size of the body.

Sixth, the display portion can be accurately positioned at the position of the element by displaying the display unit so that the position of the element can be seen from the outside on the upper and lower covers.

Seventh, by forming the light blocking wings at the edges of the upper and lower cover to block the inflow of external light enables precise measurement.

Eighth, the sensor unit of the present invention has a structure in which the free ends of the upper and lower covers are separated from each other and the left and right sides are open to the outside, so that the measurement can be performed regardless of the body length of the measurement site. It suppresses the generation of moisture caused by the improvement of wearing feeling and precise measurement.

Claims (10)

A light emitting device having a light emitting device and having an upper cover provided to cover one surface of the body and a lower cover provided at a position opposite to the light emitting device and covering the other surface of the body, the light emitting device passing through the body In the sensor unit of the oxygen saturation measuring device to measure the light transmittance of the oxygen and to measure the oxygen saturation in the blood, Entry portion 131 through which the measurement part of the body is formed is formed, each end of the upper, lower cover 110, 120 is fixed and the wire for electrically connecting the light emitting element 161 and the light receiving element 162 It is provided with a support 150 through which 140 is passed, The upper cover 110 and the lower cover 120 is located up and down facing and the left and right sides are open to the outside, the other end of the upper, lower cover 110, 120 are formed to be free ends separated from each other and the support From the 130 to the free end side is formed so that the space between the upper and lower cover 110, 120 gradually narrows, The support 150 and the upper, lower cover 110, 120 is a sensor unit of the oxygen saturation meter, characterized in that formed of a stretchable elastic material. The sensor unit of claim 1, wherein the upper and lower covers 110 and 120 face each other with concave recesses 121 formed therebetween. The sensor unit of claim 1 or 2, wherein reinforcing ribs (116, 126) are further formed on outer surfaces of the upper and lower covers (110, 120). 4. The sensor unit as set forth in claim 3, wherein the reinforcing ribs (116) (126) have plate springs (117) (127) capable of elastic restoration. The oxygen saturation measuring device of claim 1 or 2, wherein the light blocking wings 112b and 122b for blocking external light are formed on both side surfaces of the upper and lower covers 110 and 120, respectively. Sensor unit. 6. The support 130 of claim 5, wherein the support 130 is positioned above and below the entry portion 131 and is recessed to form recesses 133a and 133b, and both sides of each recess 133a and 133b. Convex portions 134a, 134b, 134c, and 134d that are formed convexly and pressurize a portion of the measurement site, and expansion portions 135a and 135b that form spaces on left and right sides of the entry portion 131. Sensor unit of the oxygen saturation meter, characterized in that formed. The sensor unit of claim 6, wherein the upper and lower covers (110) and the support (130) are made of a silicon material. The sensor unit of claim 7, wherein a display unit for displaying positions of the light emitting device and the light receiving device is displayed on the upper and lower covers. According to claim 1 or 2, wherein the end of the wire 140 is provided with a connector 150 is connected to the measurement main body, the connector 150 is characterized in that the auxiliary handle 155 is extended Sensor unit of saturation meter. The light receiving element 162 includes a light receiving portion 162a, a terminal 162b connected to the light receiving portion, and a shield band 162c for shielding external electromagnetic waves around the light receiving portion. Sensor unit of the oxygen saturation meter, characterized in that formed.