Forehead-worn oxyhemoglobin saturation probe

Abstract

The forehead wearing type oxyhemoglobin saturation probe comprises a shell, the shell is formed by combining an upper shell body and a lower shell body, the bottom of the lower shell body is an arc face, two light holes are formed in the bottom of the lower shell body in a bilateral symmetry mode, a clamping groove surrounding the light holes is formed in the top of the lower shell body, and a light shield is fixed to the clamping groove in a clamped mode. A light-emitting tube and a receiving tube are arranged in the two light shields respectively, a light shielding plate is arranged between the two light transmitting holes, the light shielding plate is connected with a sliding groove in the lower shell in a sliding mode, the sliding groove is formed in the top of the lower shell, and a communication opening communicated with the sliding groove is formed in the bottom of the light shielding plate. Acting force is applied to the light shielding plate through the elastic piece, the elastic light-proof rubber pad is arranged at the bottom of the light shielding plate, the flexible rubber pad can adapt to forehead curves of different patients under the acting force of the elastic piece, contact tightness is guaranteed, and the situation that due to light leakage, the receiving tube directly receives light of the light emitting tube, and the light shielding effect is affected is avoided. Therefore, the measurement result is not accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a forehead-mounted blood oxygen saturation probe. Background Art

[0002] Blood oxygen saturation is an important physiological parameter reflecting the content of oxyhemoglobin in human blood and is of great significance for monitoring the respiratory and circulatory function status of patients. Currently, the commonly used method for monitoring blood oxygen saturation clinically is a pulse oximeter based on the optoelectronic principle, which calculates the blood oxygen saturation by detecting the absorption difference of red light and infrared light by the skin tissue rich in capillaries of fingers or other parts.

[0003] In the existing forehead-mounted blood oxygen saturation probe, a light-shielding plate is arranged between the light-emitting tube and the receiving tube to prevent the light of the light-emitting tube from being directly absorbed by the receiving tube, thereby causing inaccurate measurement data. However, the light-emitting tube and the receiving tube are relatively close, and the width of the light-shielding plate is limited. This leads to that when the probe is fixed on the patient's forehead through a strap, the protruding light-shielding plate abuts against the patient's forehead. To avoid light leakage from the gap between the light-shielding plate and the patient's forehead, the light-shielding plate should be in close contact with the patient's forehead. However, the too-narrow light-shielding plate has a small contact area with the patient's forehead skin and exerts a large pressure on the patient's forehead skin, which is very likely to cause indentations on the patient's skin and discomfort. In addition, the curves of the foreheads of different patients are different, and the hard light-shielding plate is not in close contact with the patient's forehead. Summary of the Invention

[0004] 1. Technical problems to be solved: The contact area between the existing light-shielding plate and the patient's forehead skin is relatively small, which is likely to cause discomfort to the patient, and it is not in close contact with the patient's skin, resulting in light leakage and inaccurate measurement results.

[0005] In view of the above technical problems, the present invention provides a forehead-mounted blood oxygen saturation probe.

[0006] 2. Technical solution: A forehead-mounted blood oxygen saturation probe includes a housing, which is composed of an upper housing and a lower housing. The bottom of the lower housing is an arc surface. Two light-transmitting holes are symmetrically arranged on the left and right of the bottom of the lower housing. A card slot surrounding the light-transmitting holes is provided at the top of the lower housing. A light-shielding cover is fixedly connected to the card slot. A light-emitting tube and a receiving tube are respectively arranged in the two light-shielding covers. A light-shielding plate is arranged between the two light-transmitting holes. The light-shielding plate is slidably connected to a sliding groove on the lower housing. The sliding groove is arranged at the top of the lower housing, and a communication port connecting the sliding groove is provided at the bottom of the light-shielding plate. The bottom of the light-shielding plate extends below the bottom surface of the lower housing. Limiting grooves are arranged on both sides of the light-shielding plate, and limiting columns are arranged in the limiting grooves. The limiting columns are fixed on the two side walls of the sliding groove. An elastic member is arranged at the top of the light-shielding plate, and the elastic member exerts a force on the light-shielding plate towards the bottom of the light-shielding plate. An opaque rubber pad is also arranged at the bottom of the light-shielding plate.

[0007] Further, a transparent light-transmitting plate is provided on the light-transmitting hole.

[0008] Further, a guide rod is fixed to the top of the light-shielding plate. The guide rod is slidably connected to a guide sleeve. The guide sleeve is arranged at the top of the chute and communicates with the chute. The top of the guide sleeve is inserted into the positioning sleeve. The positioning sleeve is fixed to the bottom of the upper housing. An elastic member is arranged in the guide sleeve, and the elastic member applies a downward acting force on the guide rod.

[0009] Further, the elastic member is a spring.

[0010] Further, a pressing plate is arranged at the top of the elastic member. A shaft hole is arranged at the top of the pressing plate. A regulating screw is rotatably connected in the shaft hole. The regulating screw is threadedly connected to the upper housing. The regulating screw extends out of the top of the upper housing and is provided with a regulating knob.

[0011] Further, an installation hole is provided on the upper housing. A wire harness sleeve is installed on the installation hole. A plurality of wires are arranged in the wire harness sleeve and are respectively connected to a light-emitting tube and a receiving tube.

[0012] Further, fixing belts are arranged on both sides of the bottom of the lower housing. The fixing belts on both sides are fixed by a magic tape.

[0013] 3. Beneficial effects: The forehead-mounted blood oxygen saturation probe of the present invention applies a force to the light-shielding plate through an elastic member, and an elastic light-impermeable rubber pad is arranged at the bottom of the light-shielding plate. The flexible rubber pad can adapt to the forehead curves of different patients under the action of the elastic member, ensuring tight contact and avoiding light leakage, which may cause the receiving tube to directly receive the light from the light-emitting tube, resulting in inaccurate measurement results. A pressing plate, a regulating screw and a regulating knob for adjusting the magnitude of the acting force of the elastic member are also provided to avoid discomfort to the patient caused by excessive acting force. Description of the drawings

[0014] Figure 1 is a schematic diagram of the internal structure of the forehead-mounted blood oxygen saturation probe of the present invention; Figure 2 is a bottom view of the forehead-mounted blood oxygen saturation probe of the present invention; Figure 3 is a top view of the forehead-mounted blood oxygen saturation probe of the present invention; Figure 4 is a side view of the light-shielding plate and the guide rod of the present invention. Detailed implementation manners

[0015] The present invention will be specifically described below with reference to the drawings.

[0016] As shown in Figure 1 to Figure 4 shown, Embodiment: A forehead-mounted blood oxygen saturation probe includes a housing, which is composed of an upper housing 1 and a lower housing 2. The bottom of the lower housing 2 is an arc surface. Two light-transmitting holes are symmetrically arranged on the left and right sides of the bottom of the lower housing 2. A card slot 3 surrounding the light-transmitting holes is provided at the top of the lower housing 2. A light-shielding cover 4 is fixedly connected to the card slot 3. A light-emitting diode 5 and a receiving tube 6 are respectively arranged in the two light-shielding covers 4. A light-shielding plate 7 is arranged between the two light-transmitting holes. The light-shielding plate 7 is slidably connected to a chute 8 on the lower housing 2. The chute 8 is arranged at the top of the lower housing 2 and a communication port communicating with the chute 8 is provided at the bottom of the light-shielding plate 7. The bottom of the light-shielding plate 7 extends below the bottom surface of the lower housing 2. Limiting grooves 9 are provided on both sides of the light-shielding plate 7. Limiting posts 10 are arranged in the limiting grooves 9. The limiting posts 10 are fixed on the two side walls of the chute 8. An elastic member 11 is provided at the top of the light-shielding plate 7. The elastic member 11 applies a force towards the bottom of the light-shielding plate 7 to the light-shielding plate 7. An opaque rubber pad 12 is further provided at the bottom of the light-shielding plate 7.

[0017] Preferably, a transparent light-transmitting plate 13 is provided on the light-transmitting hole.

[0018] It should be noted that the arc radian of the bottom surface of the lower housing 2 is designed according to the forehead curve of ordinary people, slightly larger than the radian of the forehead curve of ordinary people. The upper housing 1 and the lower housing 2 can be made of soft silicone or plastic. The lower housing 2 and the card slot are integrally injection-molded. The upper housing 1 and the lower housing 2 are fixedly connected by clamping. When the blood oxygen saturation probe of this embodiment is fixed on the patient's forehead, the bottom of the lower housing 1 faces the patient's forehead. At this time, the elastic member 11 squeezes the light-shielding plate 7 to move towards the patient's forehead direction. The flexible rubber pad 12 at the bottom of the light-shielding plate 7 is compressed and thus closely adheres to the patient's forehead. The flexible rubber pad 12 can be deformed according to the curve of the patient's forehead, so as to avoid light leakage caused by the flexible rubber pad 12 not fitting tightly with the patient's forehead and having gaps, thereby affecting the accuracy of the measurement result. The elasticity of the elastic member 11 is moderate, and there is a flexible rubber pad 12 as a buffer, which can avoid causing discomfort to the patient due to excessive squeezing force.

[0019] Specifically, a guide rod 14 is fixed at the top of the light-shielding plate 7. The guide rod 14 is slidably connected to a guide sleeve 15. The guide sleeve 15 is arranged at the top of the chute 8 and communicates with the chute 8. The top of the guide sleeve 15 is inserted into a positioning sleeve 16. The positioning sleeve 16 is fixed at the bottom of the upper housing 1. An elastic member 11 is arranged in the guide sleeve 15. The elastic member 11 applies a downward force to the guide rod 14. After the guide sleeve 15 is inserted into the positioning sleeve 16, the upper housing 1 and the lower housing 2 are clamped tightly by a clamping method, so as to avoid the separation of the upper housing 1 and the lower housing 2 caused by the reaction force of the elastic member 11.

[0020] Preferably, the elastic member 11 is a spring.

[0021] The following structure is provided to further control the acting force of the elastic member 11 to meet the needs of different patients. A pressing plate 17 is provided at the top of the elastic member 11. A shaft hole is provided at the top of the pressing plate 17. An adjusting screw 18 is rotatably connected in the shaft hole. The adjusting screw 18 is threadedly connected to the upper housing 1. An adjusting knob 19 is provided at the top of the adjusting screw 18 extending out of the upper housing 1. By rotating the adjusting knob 19, the adjusting screw 18 is driven to rotate. The adjusting screw 18 moves downward and pushes the pressing plate 17 to squeeze the elastic member 11, thereby changing the compression amount of the elastic member 11, and thus adjusting the acting force of the elastic member 11 on the light shielding plate 7. While ensuring that the flexible rubber pad 12 at the bottom of the light shielding plate 7 fits tightly against the patient's forehead, the squeezing force is reduced, and the patient's comfort is improved.

[0022] The upper housing 1 is provided with a mounting hole, and a wire harness sleeve 20 is mounted on the mounting hole. A plurality of wires are provided in the wire harness sleeve 20 and are respectively connected to the light emitting tube 5 and the receiving tube 6.

[0023] Fixing bands 21 are provided on both sides of the bottom of the lower housing 2. The fixing bands 21 on both sides are fixed by Velcro. When in use, the whole device is fixed on the forehead through Velcro.

[0024] Although the present invention has been disclosed above with preferred embodiments, they are not used to limit the present invention. Any person skilled in this art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the protection scope of the claims of this application.

Claims

1. A forehead-mounted blood oxygen saturation probe, characterized in that, It includes a housing, which is composed of an upper housing and a lower housing combined. The bottom of the lower housing is an arc surface. Two light-transmitting holes are symmetrically arranged on the left and right of the bottom of the lower housing. A card slot surrounding the light-transmitting holes is provided at the top of the lower housing. A light-shielding cover is fixedly connected to the card slot. A light-emitting tube and a receiving tube are respectively arranged in the two light-shielding covers. A light-shielding plate is arranged between the two light-transmitting holes. The light-shielding plate is slidably connected to a chute on the lower housing. The chute is arranged at the top of the lower housing and a communication port communicating with the chute is provided at the bottom of the light-shielding plate. The bottom of the light-shielding plate extends below the bottom surface of the lower housing. Limiting grooves are provided on both sides of the light-shielding plate, and limiting posts are arranged in the limiting grooves. The limiting posts are fixed on the two side walls of the chute. An elastic member is provided at the top of the light-shielding plate, and the elastic member applies a force towards the bottom of the light-shielding plate to the light-shielding plate. An opaque rubber pad is also provided at the bottom of the light-shielding plate.

2. The forehead-mounted blood oxygen saturation probe according to claim 1, wherein A transparent light-transmitting plate is provided on the light-transmitting hole.

3. The forehead-mounted blood oxygen saturation probe according to claim 2, characterized in that, A guide rod is fixed at the top of the light-shielding plate. The guide rod is slidably connected to a guide sleeve. The guide sleeve is arranged at the top of the chute and communicates with the chute. The top of the guide sleeve is inserted into a positioning sleeve, and the positioning sleeve is fixed to the bottom of the upper housing. An elastic member is arranged in the guide sleeve, and the elastic member applies a downward force to the guide rod.

4. An in-ear oxygen saturation probe according to any one of claims 1 to 3, characterized in that, The elastic member is a spring.

5. The forehead-mounted blood oxygen saturation probe according to claim 3, wherein A pressing plate is provided at the top of the elastic member. A shaft hole is provided at the top of the pressing plate. An adjusting screw is rotatably connected in the shaft hole. The adjusting screw is threadedly connected to the upper housing. An adjusting knob is provided at the top of the adjusting screw extending out of the upper housing.

6. The forehead-mounted blood oxygen saturation probe according to claim 1, wherein An installation hole is provided on the upper housing. A wire harness sleeve is installed on the installation hole. Multiple wires are arranged in the wire harness sleeve and are respectively connected to the light-emitting tube and the receiving tube.

7. The forehead-mounted blood oxygen saturation probe according to claim 1, wherein, Fixing belts are provided on both sides of the bottom of the lower housing. The fixing belts on both sides are fixed by a magic tape.

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