A new portable blood oximeter

Abstract

The present invention relates to the technical field of medical devices, and discloses a novel portable blood oximeter, comprising a housing, a clamping device and a shielding device. A circular opening is provided at one end of the housing. The clamping device comprises a driving assembly, four clamping plates and four connecting rod mechanisms, wherein the clamping plates are arc-shaped plates, and the four clamping plates are arranged in a ring shape in the housing around the axis of the opening. The driving assembly is used to drive the four clamping plates to move synchronously to clamp the fingers. The connecting rod mechanism comprises a swing rod and two parallel connecting rods, which are used to keep the clamping plates in their original positions for displacement. The shielding device is coated on the outside of the clamping device to shield external infrared interference. The present invention clamps the finger by the clamping device, and fits the finger as closely as possible while maintaining a preset clamping force. At the same time, the shielding device forms a comprehensive covering of the finger detection section, thereby achieving a better anti-infrared interference effect and improving the accuracy of blood oxygen detection.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a novel portable oximeter. Background Art

[0002] A portable oximeter is a device that can be carried and used to measure the body's blood oxygen saturation (SpO2) and pulse rate (generally consistent with the heart rate). Existing portable oximeters are usually finger-clip oximeters, which consist of an instrument body and a clip. The clip can be fixed on the finger by clamping, and the photoelectric sensor detects the blood oxygen content in the blood through an infrared beam.

[0003] However, the clamping force of the finger clip oximeter is usually not adjustable, which means that people with different finger sizes may feel uncomfortable or the clamping may not be firm. This will also affect the accuracy of the oximeter. In addition, the finger clip oximeter is susceptible to external infrared interference. Due to the presence of infrared light in the environment, it may interfere with the photoelectric sensor of the oximeter, resulting in inaccurate measurement results. Summary of the invention

[0004] Based on this, it is necessary to provide a new portable blood oxygen meter to address the problems that the clamping force of the existing finger-clip blood oxygen meter cannot be adjusted, is difficult to be used for a wide range of people, is easily affected by infrared interference, and leads to low blood oxygen monitoring accuracy.

[0005] The present invention is realized through the following technical scheme: a novel portable oximeter comprises a shell, a clamping device, a shielding device, a measuring device, a controller, an alarm and an outer cover.

[0006] A circular opening is provided at one end of the housing. The clamping device comprises a driving assembly, four clamping plates and four connecting rod mechanisms. The clamping plates are arc-shaped plates, and the four clamping plates are arranged in a ring shape in the housing around the axis of the opening. The driving assembly comprises a motor, a screw rod, a nut, a guide rail and a bearing. The motor is mounted on the outer wall of the housing, and its output end passes through the housing and is fixedly connected to the screw rod. The screw rod is coaxially arranged with the opening. The nut is screwed on the screw rod. The guide rail is fixedly connected to the inner wall of the housing, and the nut is slidably connected to the guide rail. The bearing is fixedly connected in the housing, and the bearing sleeve is arranged outside the screw rod and is fixedly connected to the screw rod. The connecting rod mechanism comprises a swing rod and two parallel connecting rods. One end of the connecting rod is rotatably connected to the clamping plate, and the other end is rotatably connected to the nut, and the rotating surface of the connecting rod is coplanar with the central axis of the nut. One end of the swing rod is rotatably connected to the inner wall of the housing, and the other end is rotatably connected to the center of the connecting rod close to the motor. The shielding device is coated on the outside of the clamping device to shield external infrared light.

[0007] The above-mentioned oximeter collects the fingerprint information of the person being tested, classifies and stores the monitoring data, and realizes long-term blood oxygen monitoring of the person being tested. While collecting the fingerprint information, the clamping device and the shielding device are triggered to start. The clamping device fits the finger as much as possible under the premise of maintaining the preset clamping force according to the feedback pressure signal. At the same time, the shielding device forms a comprehensive coverage of the finger detection section, achieving a better anti-infrared interference effect and improving the accuracy of blood oxygen detection. In addition, the overall volume of the oximeter of this embodiment is slightly larger than that of an adult's finger, and the volume is close to that of the existing finger-clip oximeter, which is easy to carry. At the same time, the outer cover is used to seal the opening of the shell. When the oximeter is not in use, it can achieve a dustproof effect and ensure the monitoring accuracy of the oximeter.

[0008] Furthermore, the splint is a flexible board or the inner wall of the splint is fixedly connected with a flexible pad.

[0009] Furthermore, one end of the lead screw away from the motor is fixedly connected to a limit block.

[0010] Furthermore, the shielding device includes a shielding layer, a sealing layer, a seal and a winding assembly. The sealing layer is coated on the outside of the four clamps. The seal is an annular belt fixedly connected to the side of the sealing layer close to the opening. The shielding layer is coated or fixedly connected to the outer surface of the sealing layer and the seal. The winding assembly is fixedly connected to the clamps and is used to drive the seal to be attached to or away from the finger when the clamps move.

[0011] Furthermore, the winding assembly includes a reel, a rotating shaft, a torsion spring and a traction rope, wherein the rotating shaft is fixedly connected to the inner wall of the housing. The reel is eccentrically rotatably connected to the rotating shaft, and the outer wall of the reel is fixedly connected to the seal. The torsion spring is fixedly connected between the rotating shaft and the reel. One end of the traction rope is fixedly connected to the reel and is wound around the rotating shaft for at least one circle, and the other end of the traction rope is fixedly connected to the clamping plate.

[0012] Furthermore, the measuring device includes an image acquisition module, a pressure sensor, a heart rate sensor, and a blood oxygen measurement module. The image acquisition module is mounted on the clamping plate at the bottom side and is used to collect finger images. The pressure sensor and the heart rate sensor are mounted on one of the clamping plates. The pressure sensor is used to detect the pressure signal between the clamping plate and the finger, and the heart rate sensor is used to detect the heart rate signal. The blood oxygen measurement module includes a detector and a receiver, which are respectively mounted on two clamping plates opposite to each other, and are used to transmit and receive blood oxygen detection signals.

[0013] Furthermore, the controller includes an image processing module, a clamping control module, a blood oxygen concentration generation module, an alarm signal generation module and a data storage module. The image processing module is used to extract the corresponding fingerprint information based on the finger image. The clamping control module is used to control the motor to start after the fingerprint information is extracted, and control the motor to stop after the pressure signal reaches a preset threshold. The blood oxygen concentration generation module is used to calculate the blood oxygen concentration of the subject based on the blood oxygen detection signal and the blood oxygen receiving signal. The alarm signal generation module is used to determine whether the blood oxygen concentration of the subject exceeds the preset blood oxygen concentration range based on the blood oxygen concentration and heart rate signal, and generate an alarm signal if so. The data storage module is used to store the detected blood oxygen concentration data and classify the blood oxygen concentration data according to the fingerprint information.

[0014] The alarm is electrically connected to the controller and is used to start up to send out alarm information when receiving an alarm signal.

[0015] Furthermore, the outer cover is flipped and connected to the outer shell to seal the outer shell.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention collects the fingerprint information of the person being tested, classifies and stores the monitoring data, and realizes long-term blood oxygen monitoring of the person being tested. While collecting the fingerprint information, the clamping device and the shielding device are triggered to start. The clamping device fits the finger as much as possible under the premise of maintaining the preset clamping force according to the feedback pressure signal. At the same time, the shielding device forms a comprehensive coverage of the finger detection section, achieving a better anti-infrared interference effect and improving the accuracy of blood oxygen detection. In addition, the overall volume of the blood oximeter of this embodiment is slightly larger than that of an adult's finger, and the volume is close to that of the existing finger-clip blood oximeter, which is easy to carry. At the same time, the outer cover is used to seal the opening of the shell. When the blood oximeter is not in use, it can achieve a dustproof effect and ensure the monitoring accuracy of the blood oximeter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a novel portable blood oximeter according to Example 1 of the present invention;

[0019] Figure 2 for Figure 1 Schematic diagram of the three-dimensional structure of the oximeter after removing the outer cover;

[0020] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the middle clamping device;

[0021] Figure 4 for Figure 1 A schematic diagram of the side view structure of the oximeter;

[0022] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure along the AA direction;

[0023] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure of the winding component.

[0024] Main component symbols

[0025] The numbers in the figure are: 1. shell; 11. outer cover; 2. clamping device; 21. driving assembly; 211. motor; 212. screw rod; 213. nut; 215. bearing; 22. clamping plate; 23. connecting rod mechanism; 231. connecting rod; 232. swing rod; 24. limit block; 3. shielding device; 31. shielding layer; 32. sealing layer; 33. sealing; 34. winding assembly; 341. reel; 342. rotating shaft; 343. torsion spring; 344. traction rope; 4. measuring device.

[0026] The above description of the main component symbols is combined with the accompanying drawings and specific implementation methods to further illustrate the present invention in detail. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0030] Example 1

[0031] See also Figure 1-Figure 2The present embodiment provides a novel portable oximeter, which includes a housing 1 , a clamping device 2 , a shielding device 3 , a measuring device 4 , a controller, an alarm, and an outer cover 11 .

[0032] A circular opening is provided at one end of the housing 1, and the person being tested can monitor the blood oxygen concentration in the finger by inserting the finger into the housing 1 along the opening. In this embodiment, the housing 1 is integrally formed of a plastic material, which has the advantages of stable structure, light weight, low cost, etc. Of course, in other embodiments, the housing 1 can also be made of metal, ceramic, wood and other materials.

[0033] Please combine Figure 3 The clamping device 2 includes a driving assembly 21, four splints 22 and four connecting rod mechanisms 23. The splint 22 is an arc-shaped plate, and the four splints 22 are arranged in a ring shape around the axis of the opening in the housing 1. The splint 22 is a flexible plate or the inner wall of the splint 22 is fixedly connected with a flexible pad. Specifically, according to the direction of the housing 1, the four splints 22 are respectively arranged at four positions of up, down, left and right, so that the fingertip is facing down just opposite one of the splints 22. In other embodiments, the distance between the splints 22 on the upper and lower sides can be adjusted to be smaller according to the general proportion of the fingers, so that the four splints 22 can fit on the fingers at the same time.

[0034] The driving assembly 21 includes a motor 211, a screw rod 212, a nut 213, a guide rail and a bearing 215. The motor 211 is mounted on the outer wall of the housing 1, and its output end passes through the housing 1 and is fixedly connected to the screw rod 212. The screw rod 212 is coaxially arranged with the opening. The nut 213 is screwed on the screw rod 212. The guide rail is fixedly connected to the inner wall of the housing 1, and the nut 213 is slidably connected to the guide rail.

[0035] The four connecting rod mechanisms 23 are arranged in a circular array around the axis of the nut 213. The connecting rod mechanism 23 includes two connecting rods 231 arranged in parallel. One end of the connecting rod 231 is rotatably connected to the clamp plate 22. The other end of the connecting rod 231 is rotatably connected to the nut 213, and the rotating surface of the connecting rod 231 is coplanar with the central axis of the nut 213. One end of the swing rod 232 is rotatably connected to the inner wall of the housing 1, and the other end is rotatably connected to the center of the connecting rod 231 close to the motor 211. In other embodiments, the connecting rod mechanism 23 can also use three connecting rods 231, which serve as the connecting rod and two connecting rods of the connecting rod structure respectively. The connecting rod is fixedly connected to the clamp plate 22, and each of the two connecting rods has one end rotatably connected to the two ends of the connecting rod, and the other end of the connecting rod is rotatably connected to the nut 213 respectively, and the two connecting rods are arranged in parallel.

[0036] One end of the screw rod 212 away from the motor 211 is fixedly connected to the limit block 24. By providing the limit block 24, it is possible to prevent the finger from excessively extending into the housing so that the detection signal passes through the fingertip.

[0037] The working principle of the clamping device 2 is as follows: the bearing 215 is fixedly connected in the housing 1, and the bearing 215 is sleeved on the outside of the screw rod 212 and fixedly connected to the screw rod 212. The motor 211 can drive the screw rod 212 to rotate. Since the motor 211 itself and the housing 1 are fixed to each other, the screw rod 212 is supported and positioned by the motor 211 and the bearing 215, so that the screw rod 212 keeps its position unchanged. When the screw rod 212 rotates, the nut 213 is driven to move along the guide rail to adjust the position of the nut 213. When the nut 213 moves, one end of the connecting rod 231 is driven to move. Under the action of the swing rod 232, the two connecting rods 231 rotate synchronously, so that the four clamping plates 22 are close to or away from each other, so as to clamp the fingers. Unlike the existing finger-clip oximeter, the clamping force of the finger-clip oximeter is related to the spring force and finger size, and cannot be adjusted. When the clamping force is too large, it is easy to interfere with the measurement result of blood oxygen concentration and reduce the monitoring accuracy. The oximeter of this embodiment can adjust the clamping force autonomously, keep the direction of the splint 22 unchanged, adjust the spacing between the splints 22, and move the splints 22 synchronously, so that the clamping force is moderate and the measurement accuracy is not disturbed. The splint 22 is made of flexible material, which can not only improve the comfort of the finger during the measurement process, but also has better adaptability to the finger.

[0038] Please combine Figure 4-Figure 5 The shielding device 3 includes a shielding layer 31, a sealing layer 32, a seal 33, and a winding assembly. The sealing layer 32 is coated on the outside of the four clamps 22. The seal 33 is an annular belt, which is fixedly connected to the side of the sealing layer 32 close to the opening. The shielding layer 31 is coated or fixedly connected to the outer surface of the sealing layer 32 and the seal 33. The sealing layer 32 can be an integrally formed flexible material, such as plastic, leather, etc., or it can be a sealing component composed of four square pieces and a circular piece. The square piece has the same length as the clamp 22, and each square piece is just connected between two clamps 22. The circular piece is fixedly connected to one end of the four clamps 22, and together with the square piece and the clamp 22, it forms a hollow cylindrical structure. The seal 33 is located on the side of the clamp 22 away from the circular piece, that is, the side close to the opening. One side of the seal 33 is connected to the opening of the sealing layer 32. When the inner side of the seal 33 is completely in contact with the finger, the seal 33, the sealing layer 32 and the finger form a sealing structure. The shielding layer 31 is made of infrared shielding material, which can prevent external infrared light from interfering with the measurement results and improve the accuracy of blood oxygen monitoring. In other embodiments, the seal 33 can also use a ring-shaped air cushion, which is made of elastic material and filled with air. The shape can be adaptively changed so that the seal 33 fits tightly against the finger and has a better sealing effect.

[0039] Please combine Figure 6The winding assembly includes a reel 341, a rotating shaft 342, a torsion spring 343 and a traction rope 344, and the rotating shaft 342 is fixedly connected to the inner wall of the housing 1. The reel 341 is eccentrically connected to the rotating shaft 342, and the outer wall of the reel 341 is fixedly connected to the seal 33. The reel 341 is a cylindrical body, and the central axis of the reel 341 is parallel to the rotating shaft 342. The torsion spring 343 is fixedly connected between the rotating shaft 342 and the reel 341. When the torsion spring 343 is in the reset state, the side of the reel 341 surface closest to the rotating shaft 342 is close to the seal 33 and fixedly connected to the seal 33.

[0040] One end of the traction rope 344 is fixedly connected to the reel 341 and is wound around the rotating shaft 342 for at least one circle, and the other end of the traction rope 344 is fixedly connected to the driving rod. In other embodiments, four winding devices 34 can also be provided, wherein the four traction ropes 344 are respectively connected to the four clamping plates 22. The four winding devices 34 simultaneously wind up the four positions of the seal 33, and the winding length corresponds to the moving distance of the clamping plate 22, so that the seal 33 can fit the finger more closely.

[0041] The working principle of the shielding device 3 is as follows: the splints 22 approach each other until they fit the finger, and the seal 33 surrounds the outside of the finger. During this process, the splint 22 drives one end of the traction rope 344 away from the rotating shaft 342, thereby driving the reel 341 to rotate, and one end of the seal 33 is away from the finger. Due to the eccentric setting of the reel 341, when rotating, the surface of the reel 341 approaches the finger until the reel 341 drives the seal 33 to fit the finger. The rotation angle of the reel 341 corresponds to the displacement of the splint 22. Specifically, during the movement of the splint 22, the inner diameter of the seal 33 is always slightly smaller than the outer diameter surrounded by the four splints 22, so that the opening size of the seal 33 is adapted to the size of the finger. The splint 22, the sealing layer 32, the shielding layer 31, and the seal 33 are used to fully cover the finger, effectively shielding the interference of external infrared light signals.

[0042] The measuring device 4 includes an image acquisition module, a pressure sensor, a heart rate sensor, and a blood oxygen measurement module. The image acquisition module is mounted on the clamping plate 22 on the bottom side and is used to collect finger images. In this embodiment, the image acquisition module includes a camera and a lighting lamp, and the camera and the lighting lamp are both mounted on the clamping plate 22. Since the finger is inserted into the housing 1, the housing 1 blocks the light, and the lighting lamp is used for fill light to make the image collected by the camera clearer. In other embodiments, the image acquisition module can also be replaced by a fingerprint collector for collecting finger fingerprints. According to the difference in each person's finger fingerprint, the monitored blood oxygen data is bound to the fingerprint, which is convenient for long-term monitoring of the blood oxygen concentration of the person being tested, which is beneficial to the analysis of the health status of the person being tested.

[0043] The pressure sensor and the heart rate sensor are installed on one of the clamping plates 22. The pressure sensor is used to detect the pressure signal between the clamping plate 22 and the finger, and the heart rate sensor is used to detect the heart rate signal. In this embodiment, the pressure sensor is installed on one of the clamping plates 22 on the left and right sides. Since the width of the finger is greater than the thickness, the clamping plates 22 on the left and right sides contact the finger first. Through the feedback of the pressure signal, the strength of clamping the finger can be determined.

[0044] The blood oxygen measurement module includes a detector and a receiver, which are respectively mounted on two upper and lower opposite clamping plates 22, and are used to transmit and receive blood oxygen detection signals. In this embodiment, the blood oxygen measurement module includes an infrared transmitter, i.e., a detector, and an infrared receiver. The detection signal is transmitted by the infrared transmitter, and the detection signal is received by the infrared receiver after passing through the finger. According to the transmitted blood oxygen detection signal and the received blood oxygen receiving signal, the corresponding blood oxygen concentration can be calculated.

[0045] The controller includes an image processing module, a clamping control module, a blood oxygen concentration generation module, an alarm signal generation module and a data storage module. The image processing module is used to extract the corresponding fingerprint information based on the finger image. The fingerprint information is used as reference data for identifying the detected person, and the detected blood oxygen concentration data can be bound to the corresponding detected person, which is convenient for observing historical detection data. In other embodiments, the image processing module can also identify the finger size based on the finger image to adjust the spacing of the splint 22 so that the splint 22 fits on the finger without the need for pressure signal detection.

[0046] The clamping control module is used to control the motor 211 to start after the fingerprint information is extracted, and to control the motor 211 to stop after the pressure signal reaches a preset threshold. At the same time, after the measurement is completed, the clamping control module can also control the motor 211 to rotate in the opposite direction to drive the clamping plate 22 to the initial position.

[0047] The blood oxygen concentration generation module is used to calculate the blood oxygen concentration of the subject according to the blood oxygen detection signal and the blood oxygen receiving signal. Reduced hemoglobin and oxygenated hemoglobin have different absorption rates for infrared light. By comparing the infrared light signal initially emitted and the infrared light signal absorbed by reduced hemoglobin and oxygenated hemoglobin after passing through the finger, the blood oxygen concentration can be obtained through analysis and calculation. In this embodiment, the infrared transmitter emits 660nm infrared light and 910nm infrared light respectively. Since reduced hemoglobin has a strong absorption of 660nm red light and a weak absorption of 910nm infrared light, oxygenated hemoglobin has a weak absorption of 660nm red light and a strong absorption of 910nm infrared light. By comparing the absorption rates of the two infrared lights, the blood oxygen concentration can be measured more accurately.

[0048] The alarm signal generation module is used to determine whether the blood oxygen concentration of the subject exceeds the preset blood oxygen concentration range based on the blood oxygen concentration and heart rate signals, and generate an alarm signal if it does. Since the human body's movement state has a certain impact on the blood oxygen concentration, whether the blood oxygen concentration is abnormal needs to be determined in combination with other factors such as heart rate.

[0049] The data storage module is used to store the detected blood oxygen concentration data and classify the blood oxygen concentration data according to the fingerprint information. In this embodiment, after the image processing module recognizes the fingerprint information, it determines whether the same fingerprint exists in the data storage module, and establishes a corresponding data set according to the fingerprint information, and stores the monitoring data corresponding to the same fingerprint in the same data set. The identity information of the person being tested can also be entered corresponding to the fingerprint, and the other fingerprint information of the person being tested can be merged into the data set based on the person being tested. According to the monitoring data of each person being tested, the blood oxygen concentration of the person being tested can be observed for a long time, and the blood oxygen concentration of different fingers of the same person being tested can be mutually verified to avoid monitoring data errors caused by finger status and improve the accuracy of blood oxygen concentration detection.

[0050] The alarm is electrically connected to the controller and is used to start up when receiving an alarm signal to send out an alarm message. The alarm can be an intelligent sound and light alarm, which can not only send out sound and light alarms, but also send out remote information or call alarms to remind the person being tested or his guardian of abnormal blood oxygen concentration.

[0051] The oximeter may also include a display and a power supply module. The display is located on the outer surface of the housing 1 and is used to display the measured blood oxygen concentration information and the corresponding information of the subject, heart rate information, alarm information, etc. The power supply module is installed in the housing 1 and is used to supply power to various electrical components of the oximeter. The power supply module may use a rechargeable battery, such as a rechargeable button battery, etc.

[0052] The outer cover 11 is connected to the outer shell 1 by flipping, and is used to seal the outer shell 1. In this embodiment, the outer shell 1 can be structurally divided into a hemispherical part close to the opening and a square part away from the opening, and the outer cover 11 is a hollow hemispherical structure as a whole. One end of the outer cover 11 is connected to the outer shell 1 by flipping, and the other end is provided with a card slot, and a card block is correspondingly provided on the outer shell 1. The outer cover 11 is also made of plastic material, and the plastic material has a certain elasticity. When the outer cover 11 is covered on the outer shell 1, the card block is just connected to the card slot through its own elastic deformation, and then the shape of the outer cover 11 is restored to form a sealing structure with the outer shell 1. Different from the existing finger-clip type blood oxygen meter, the blood oxygen meter of this embodiment, by covering the outer cover 11 on the outer shell 1, realizes the sealing of the outer shell 1, achieves the effect of dustproof, and maintains the accuracy of the measuring device 4.

[0053] The novel portable oximeter of this embodiment collects the fingerprint information of the person being tested, classifies and stores the monitoring data, and realizes long-term blood oxygen monitoring of the person being tested. While collecting the fingerprint information, the clamping device 2 and the shielding device 3 are triggered to start. The clamping device 2 fits the finger as much as possible under the premise of maintaining the preset clamping force according to the feedback pressure signal. At the same time, the shielding device 3 forms a comprehensive covering of the finger detection section, achieving a better anti-infrared interference effect and improving the accuracy of blood oxygen detection. In addition, the overall volume of the oximeter of this embodiment is slightly larger than that of an adult's finger, and the volume is close to that of the existing finger-clip oximeter, which is easy to carry. At the same time, the outer cover 11 is used to seal the opening of the shell 1. When the oximeter is not in use, it can achieve a dustproof effect and ensure the monitoring accuracy of the oximeter.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A novel portable oximeter, characterized in that: It includes: A housing (1) having a circular opening at one end; A clamping device (2) comprises a driving assembly (21), four clamping plates (22) and four connecting rod mechanisms (23), wherein the clamping plates (22) are arc-shaped plates, and the four clamping plates (22) are arranged in a ring shape around the axis of the opening in the housing (1); the driving assembly (21) comprises a motor (211), a screw rod (212), a nut (213), a guide rail and a bearing (215); the motor (211) is mounted on the outer wall of the housing (1), and the output end thereof passes through the housing (1) and is fixedly connected to the screw rod (212); the screw rod (212) is arranged coaxially with the opening; the nut (213) is screwed onto the screw rod (212); the guide rail is fixedly connected to the inner wall of the housing (1), and the nut (213) is fixedly connected to the inner wall of the housing (1). 213) is slidably connected to the guide rail; the bearing (215) is fixedly connected in the housing (1), and the bearing (215) is sleeved on the outside of the screw rod (212) and fixedly connected to the screw rod (212); the connecting rod mechanism (23) comprises a swing rod (232) and two connecting rods (231) arranged in parallel; one end of the connecting rod (231) is rotatably connected to the clamping plate (22), and the other end is rotatably connected to the nut (213), and the rotating surface of the connecting rod (231) is coplanar with the central axis of the nut (213); one end of the swing rod (232) is rotatably connected to the inner wall of the housing (1), and the other end is rotatably connected to the center of the connecting rod (231) close to the motor (211); A shielding device (3), which is coated on the outside of the clamping device (2) and is used to shield external infrared light; The clamping plate (22) is a flexible plate or the inner wall of the clamping plate (22) is fixedly connected to a flexible pad; One end of the screw rod (212) away from the motor (211) is fixedly connected to a limit block (24); The shielding device (3) comprises a shielding layer (31), a sealing layer (32), a seal (33) and a winding assembly; the sealing layer (32) is coated on the outside of the four clamps (22); the seal (33) is an annular belt, fixedly connected to the side of the sealing layer (32) close to the opening; the shielding layer (31) is coated or fixedly connected to the outer surface of the sealing layer (32) and the seal (33); the winding assembly is fixedly connected to the clamp (22) and is used to drive the seal (33) to be attached to or away from the finger when the clamp (22) moves; The winding assembly comprises a reel (341), a rotating shaft (342), a torsion spring (343) and a traction rope (344); the rotating shaft (342) is fixedly connected to the inner wall of the housing (1); the reel (341) is eccentrically rotatably connected to the rotating shaft (342); the outer wall of the reel (341) is fixedly connected to the seal (33); the torsion spring (343) is fixedly connected between the rotating shaft (342) and the reel (341); one end of the traction rope (344) is fixedly connected to the reel (341) and is wound around the rotating shaft (342) for at least one turn; the other end of the traction rope (344) is fixedly connected to the clamping plate (22).

2. The novel portable oximeter according to claim 1 is characterized in that: The device also comprises a measuring device (4), the measuring device (4) comprising an image acquisition module, a pressure sensor, a heart rate sensor, and a blood oxygen measurement module. The image acquisition module is mounted on the clamping plate (22) at the bottom side and is used to acquire a finger image. The pressure sensor and the heart rate sensor are mounted on one of the clamping plates (22). The pressure sensor is used to detect a pressure signal between the clamping plate (22) and the finger, and the heart rate sensor is used to detect a heart rate signal. The blood oxygen measurement module comprises a detector and a receiver, which are respectively mounted on two clamping plates (22) opposite to each other and are used to transmit and receive blood oxygen detection signals.

3. The novel portable oximeter according to claim 2 is characterized in that: Also includes: A controller, comprising an image processing module, a clamping control module, a blood oxygen concentration generation module, an alarm signal generation module and a data storage module; the image processing module is used to extract corresponding fingerprint information according to the finger image; the clamping control module is used to control the motor (211) to start after the fingerprint information is extracted, and control the motor (211) to stop after the pressure signal reaches a preset threshold; the blood oxygen concentration generation module is used to calculate the blood oxygen concentration of the subject according to the blood oxygen detection signal and the blood oxygen reception signal; the alarm signal generation module is used to determine whether the blood oxygen concentration of the subject exceeds a preset blood oxygen concentration range according to the blood oxygen concentration and the heart rate signal, and if so, generates an alarm signal; the data storage module is used to store the detected blood oxygen concentration data, and classify the blood oxygen concentration data according to the fingerprint information; An alarm is electrically connected to the controller and is used to start up to send out an alarm message when receiving the alarm signal.

4. The novel portable oximeter according to claim 1 is characterized in that: It also comprises an outer cover (11), wherein the outer cover (11) is connected to the outer shell (1) by flipping and is used to seal the outer shell (1).

Images