Finger clamping type pulse oximeter

Abstract

The utility model discloses a finger clip type pulse oximeter, which comprises a panel assembly, an upper shell assembly, a lower shell assembly, an upper finger clip pad, a lower finger clip pad, a light emitter and a receiver, in a storage state, the matching surfaces of the upper shell assembly and the lower shell assembly are close to each other, and the shading part of the panel assembly is arranged in a storage groove; in the using state, after an external finger or a similar finger is inserted between the upper shell assembly and the lower shell assembly, the upper shell assembly and the lower shell assembly are opened, the cavity is compressed, the shading part of the panel assembly is separated from the containing groove, and the upper finger clamping pad, the lower finger clamping pad and the shading parts on the two sides jointly form a containing cavity for containing and shielding the external finger or the similar finger. According to the scheme, light leakage interference can be effectively prevented from influencing a measurement result, the shading part and the panel assembly are integrally formed instead of being additionally arranged in a sleeving mode, the number of parts is small compared with the number of parts, assembly procedures are reduced, and the requirements for the production process and the production cost are reduced to some extent; and the shading part and the accommodating groove of the lower shell assembly can be integrally accommodated in the accommodating state.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to a finger clamp type pulse blood oxygen instrument. BACKGROUND

[0002] The finger clamp type pulse blood oxygen instrument is mainly based on the optical characteristics of biological tissues, utilizes the difference of the light absorption rate of Hb and HbO2 in blood at different wavelengths, utilizes the characteristics that the change of arterial blood flow caused by pulse beats leads to the change of tissue absorbance, and detects the blood oxygen saturation based on the Lambert-Beer law as the optical basis. The finger clamp type pulse blood oxygen instrument has the advantages of small size, low power consumption, convenience in carrying, simple testing and the like, and relatively accurate pulse blood oxygen data can be measured in 5-10 seconds.

[0003] Since the finger clamp type blood oxygen instrument detects by using an optical sensor during use, in order to ensure the accuracy of measurement, it is usually necessary to avoid the influence of the measurement result caused by light leakage interference.

[0004] The existing finger clamp type blood oxygen instrument comprises a shell assembly, a finger clamp pad, an optical sensor, and a clamping mechanism for clamping the finger clamp pad to be opened, in order to avoid the problem of light leakage, one is to provide a light shielding silica gel or a light shielding panel outside the shell assembly, and the other is to provide a curved surface and a light shielding surface on the finger clamp pad, which can wrap different thickness of fingers.

[0005] 1. The method of providing a light shielding silica gel or a light shielding panel outside the shell assembly has the problems of a large number of accessories, complex assembly, difficult production, and an increase of a protruding part on a small finger clamp type blood oxygen instrument, which adversely affects portability and easy storage.

[0006] 2. The method of providing a curved surface and a light shielding surface on the finger clamp pad has the problems of a complex curved surface and light shielding surface, high production process requirement and high production cost, and the method also has the problem of light leakage when the opening angle of the upper finger clamp pad and the lower nail pad is too large (the finger is too thick).

[0007] Therefore, how to solve the problems of high production process requirement, high production cost, and influence on other performances caused by the methods for avoiding light leakage of the existing finger clamp type blood oxygen instrument has become a subject to be studied and solved by the utility model. SUMMARY

[0008] The utility model discloses a finger clamp type pulse blood oxygen instrument.

[0009] To achieve the above objectives, this utility model proposes a finger-clamp pulse oximeter. The oximeter includes a panel assembly, an upper shell assembly, a lower shell assembly, an upper finger clip, a lower finger clip, a light emitter, and a receiver. The upper finger clip is placed within the upper shell assembly, and the lower finger clip is placed within the lower shell assembly. The upper and lower shell assemblies are fitted together, and a rotating mechanism for opening and clamping is provided between them. Its innovation lies in:

[0010] The panel assembly is mounted on the upper shell assembly. Both sides of the panel assembly extend beyond the mating surface between the upper shell assembly and the lower shell assembly toward the lower shell assembly to form a light-shielding portion. The lower shell assembly is provided with a receiving groove corresponding to the light-shielding portion.

[0011] The lower surface of the upper finger clip pad is the first contact surface, and the upper surface of the lower finger clip pad is the second contact surface. There is at least one cavity between the upper surface of the upper finger clip pad and the upper shell assembly, and between the lower surface of the lower finger clip pad and the lower shell assembly. The light emitter is disposed on one of the upper finger clip pad and the receiver is disposed on the other.

[0012] The pulse oximeter is configured to have a storage state and a use state. In the storage state, the mating surfaces between the upper shell assembly and the lower shell assembly are close together, and the light-shielding part of the panel assembly is placed in the receiving groove. In the use state, when an external finger or finger-like object is inserted between the upper shell assembly and the lower shell assembly and then opened, the cavity is compressed, and the light-shielding part of the panel assembly is disengaged from the receiving groove. The upper finger clip, the lower finger clip, and the light-shielding parts on both sides together form a receiving cavity that accommodates and shields the external finger or finger-like object.

[0013] The relevant contents of this utility model are explained as follows:

[0014] 1. In the above-mentioned technical solution of this utility model, addressing the problems of high production process requirements, high production costs, and impact on other performance issues associated with existing finger-clamp pulse oximeters that use methods to avoid light leakage, an innovative finger-clamp pulse oximeter is designed. In this finger-clamp pulse oximeter, the two sides of the panel assembly extend beyond the mating surface of the upper and lower shell assemblies towards the lower shell assembly to form a light-shielding part. A receiving groove is provided on the lower shell assembly corresponding to the light-shielding part. There is at least one cavity between the upper surface of the upper finger clip and the upper shell assembly, and between the lower surface of the lower finger clip and the lower shell assembly. In use, when an external finger or finger-like object is inserted between the upper and lower shell assemblies and then opened, the cavity is compressed, and the light-shielding part of the panel assembly disengages from the receiving groove. The light is then released by the upper finger clip and the lower... The finger clip and the light-blocking parts on both sides together form a cavity that accommodates and blocks external fingers or finger-like structures. This allows the cavity to be compressed after the finger is inserted, improving the user's grip comfort. In addition, the light-blocking parts rise as the finger clip opens, blocking light from entering the sides of fingers that are not in contact with the upper or lower finger clips during use. This effectively avoids light leakage interference that could affect the measurement results. Since the light-blocking parts are integrally molded with the panel assembly rather than being separately fitted, there are fewer parts, fewer assembly steps, and lower requirements for production processes and costs. Moreover, in the stored state, the light-blocking parts can be integrated with the receiving slot of the lower shell assembly, making the pulse oximeter smaller in size when stored. The light-blocking parts do not protrude and do not affect the storage properties of the pulse oximeter.

[0015] 2. In the above technical solution, the cavity includes a first cavity between the upper surface of the upper finger pad and the upper shell assembly, and a second cavity between the lower surface of the lower finger pad and the lower shell assembly, so that the finger can compress the cavity in both the vertical and horizontal directions, thereby further improving the clamping comfort after the finger is inserted into the receiving cavity due to the cavity design, while also providing more space to accommodate the finger and improving the light blocking effect.

[0016] 3. In the above technical solution, an electronic module is accommodated between the panel assembly and the upper shell assembly, and the panel assembly is assembled with the upper shell assembly by means of a snap fastener, thereby optimizing the assembly structure and assembly method and simplifying the assembly process.

[0017] 4. In the above technical solution, the snap fastener of the panel assembly is provided with an upward snap-fit ​​surface, which abuts against a facing surface on the upper shell assembly. The snap fastener is located above the light-shielding part, thereby ensuring better assembly of the panel assembly and the upper shell assembly and ensuring the structural firmness and stability.

[0018] 5. In the above technical solution, the upper shell assembly has an assembly groove that matches the assembly part of the panel assembly. In the stored state, the connection between the assembly groove of the upper shell assembly and the receiving groove of the lower shell assembly is a plane and / or a smooth curved surface, so that the panel assembly and the light-shielding part extending downward from the panel assembly can be more integrated with the upper shell assembly and the lower shell assembly after assembly, thereby improving the user's experience.

[0019] 6. In the above technical solution, in the storage state, after the light-shielding part of the panel assembly is placed in the receiving groove, the surface of the light-shielding part of the panel assembly is flush with the surface of the mounting groove of the upper shell assembly and the surface of the receiving groove of the lower shell assembly. This further ensures that in the storage state, the light-shielding part will not protrude from the surfaces of the upper shell assembly and the lower shell assembly. The flush surface provides a better grip and makes storage easier.

[0020] 7. In the above technical solution, in the vertical thickness direction of the pulse oximeter, the ratio between the vertical distance of the light-shielding part and the vertical distance between the upper and lower surfaces of the lower shell assembly is between 1 / 3 and 2 / 3. This reasonable size ensures that the size setting of the light-shielding part can effectively block light, while ensuring that the size design of the upper shell assembly, lower shell assembly, and panel assembly can be more reasonable. This ratio can be 1 / 3, 1 / 2, 2 / 3, etc.

[0021] 8. In this utility model, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] 9. In this utility model, the terms "center", "upper", "lower", "axial", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional assembly relationship shown in the drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] 10. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] Due to the application of the above solution, this utility model has the following advantages and effects compared with the prior art:

[0025] 1. The above-mentioned solution of this utility model addresses the problems of high production process requirements, high production costs, and impact on other performance of existing finger clip pulse oximeters that are used to avoid light leakage. The solution innovatively designs a finger clip pulse oximeter to improve the light-blocking effect while reducing costs and without other impacts.

[0026] 2. In the above-described solution of this utility model, in this finger-clamp pulse oximeter, the two sides of the panel assembly extend beyond the mating surfaces of the upper and lower shell assemblies toward the lower shell assembly to form light-shielding portions. A receiving groove is provided on the lower shell assembly corresponding to the light-shielding portion. At least one cavity is formed between the upper surface of the upper finger clip and the upper shell assembly, and between the lower surface of the lower finger clip and the lower shell assembly. In use, when an external finger or finger-like object is inserted between the upper and lower shell assemblies and then opened, the cavity is compressed, and the light-shielding portion of the panel assembly disengages from the receiving groove. The upper finger clip, the lower finger clip, and the light-shielding portions on both sides together form a receiving cavity that accommodates and shields the external finger or finger-like object. The design allows the cavity to be compressed after a finger is inserted, improving comfort for the user. Simultaneously, the light-shielding part rises as it opens, blocking light from entering the sides of fingers not in contact with the upper or lower finger grippers. This effectively prevents light leakage interference that could affect measurement results. Since the light-shielding part is integrally molded with the panel assembly rather than being an additional component, the number of parts is reduced, assembly steps are decreased, and production process requirements and costs are lowered. Furthermore, in the retracted state, the light-shielding part can be integrated with the receiving slot of the lower shell assembly, resulting in a smaller pulse oximeter in its retracted state. The light-shielding part does not protrude and does not affect the retractable design of the pulse oximeter. Attached Figure Description

[0027] Figure 1 This is a schematic diagram (a) of the finger clip pulse oximeter in use according to an embodiment of the present utility model.

[0028] Figure 2 This is a schematic diagram (II) of the finger clip pulse oximeter in use according to an embodiment of the present utility model.

[0029] Figure 3 This is an exploded schematic diagram of a finger clip pulse oximeter according to an embodiment of the present invention;

[0030] Figure 4 This is a three-dimensional cross-sectional view of the finger clip pulse oximeter in its stored state, according to an embodiment of the present invention.

[0031] Figure 5 This is a cross-sectional view of the finger clip pulse oximeter in its stowed state, according to an embodiment of the present invention.

[0032] The parts shown in the above attached diagram are illustrated below:

[0033] 1. Panel assembly; 101. Light-shielding part; 102. Clip;

[0034] 2. Electronic module;

[0035] 3. Upper shell assembly; 301. Assembly slot;

[0036] 4. Upper finger gripper; 401. First contact surface; 402. First cavity; 403. Receiving cavity

[0037] 5. Lower finger gripper; 501. Second contact surface; 502. Second cavity;

[0038] 6. Lower shell assembly; 601. Receiving slot;

[0039] 7. Battery cover;

[0040] 8. Light emitter;

[0041] 9. Receiver;

[0042] 10. Rotating mechanism;

[0043] 11. Battery. Detailed Implementation

[0044] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0045] This invention addresses the problems of high production process requirements, high production costs, and impact on other performance aspects associated with existing finger-clip pulse oximeters that use methods to avoid light leakage. Instead, it innovatively designs a finger-clip pulse oximeter to improve light-blocking effects and prevent interference with blood oxygen detection while reducing costs and without other negative impacts.

[0046] likeFigures 1 to 5 As shown in the figure, this utility model discloses a finger-clamp pulse oximeter. The oximeter includes a panel assembly 1, an upper shell assembly 3, a lower shell assembly 6, an upper finger clamp pad 4, a lower finger clamp pad 5, a light emitter 8, and a receiver 9. The upper finger clamp pad 4 is placed in the upper shell assembly 3, and the lower finger clamp pad 5 is placed in the lower shell assembly 6. The upper shell assembly 3 and the lower shell assembly 6 are installed and fitted together, and a rotating mechanism 10 for opening and clamping is provided between them. Its innovation lies in:

[0047] The panel assembly 1 is mounted on the upper shell assembly 3. The two sides of the panel assembly 1 extend beyond the mating surface of the upper shell assembly 3 and the lower shell assembly 6 toward the lower shell assembly 6 to form a light-shielding part 101. The lower shell assembly 6 is provided with a receiving groove 601 corresponding to the light-shielding part 101.

[0048] The lower surface of the upper finger clip 4 is the first contact surface 401, and the upper surface of the lower finger clip 5 is the second contact surface 501. There is at least one cavity between the upper surface of the upper finger clip 4 and the upper shell assembly 3, and between the lower surface of the lower finger clip 5 and the lower shell assembly 6. The light emitter 8 is disposed on one of the upper finger clip 4 and the receiver 9 is disposed on the other.

[0049] The pulse oximeter is configured to have a storage state and a usage state. In the storage state, reference... Figure 4 The mating surfaces of the upper shell assembly 3 and the lower shell assembly 6 are close together, and the light-shielding portion 101 of the panel assembly 1 is placed in the receiving groove 601; in the use state, refer to Figure 1 (Open at a small angle) Figure 2 (Opening to a large angle), after inserting an external finger or finger-like part between the upper shell assembly 3 and the lower shell assembly 6, the cavity is compressed, and the light-shielding part 101 of the panel assembly 1 is disengaged from the receiving groove 601. The upper finger clip 4, the lower finger clip 5 and the light-shielding parts 101 on both sides together form a receiving cavity 403 that accommodates and shields the external finger or finger-like part.

[0050] Through the implementation of this utility model embodiment, in this finger clip pulse oximeter, the two sides of the panel assembly 1 extend beyond the mating surfaces of the upper shell assembly 3 and the lower shell assembly 6 toward the lower shell assembly 6 to form light-shielding portions 101. A receiving groove 601 is provided on the lower shell assembly 6 corresponding to the light-shielding portion 101. At least one cavity is formed between the upper surface of the upper finger clip 4 and the upper shell assembly 3, and between the lower surface of the lower finger clip 5 and the lower shell assembly 6. In use, when an external finger or finger-like object is inserted between the upper shell assembly 3 and the lower shell assembly 6 and then opens, the cavity is compressed, and the light-shielding portion 101 of the panel assembly 1 disengages from the receiving groove 601. The upper finger clip 4, the lower finger clip 5, and the light-shielding portions 101 on both sides together form a container that accommodates and shields the external finger or finger-like object. The cavity 403 is designed so that when a finger is inserted into the cavity, the cavity is compressed, improving the comfort of the user. In conjunction with the light-shielding part 101 that rises as it opens, the side of the finger that is not in contact with the upper finger pad 4 or the lower finger pad 5 can be blocked from light by the light-shielding part 101, thus effectively avoiding light leakage interference that could affect the measurement results. Since the light-shielding part 101 is integrally formed with the panel assembly 1 rather than being an additional part, the number of parts is reduced, the assembly process is simplified, and the requirements for production processes and production costs are reduced. Moreover, in the storage state, the light-shielding part 101 can be integrated with the receiving slot 601 of the lower shell assembly 6, making the pulse oximeter smaller in the storage state. The light-shielding part 101 does not protrude and does not affect the storage properties of the pulse oximeter.

[0051] In one embodiment of the above-described embodiments of the present invention, the cavity includes a first cavity 402 between the upper surface of the upper finger gripper 4 and the upper shell assembly 3, and a second cavity 502 between the lower surface of the lower finger gripper 5 and the lower shell assembly 6. This allows the fingers to compress the cavity in both the vertical and horizontal directions, thereby further improving the gripping comfort after the fingers are inserted into the receiving cavity 403 due to the cavity design. At the same time, it can accommodate more fingers and improve the light-blocking effect.

[0052] In another embodiment of the above-described embodiments of the present invention, an electronic module 2 is accommodated between the panel assembly 1 and the upper shell assembly 3. The panel assembly 1 is assembled with the upper shell assembly 3 via a snap fastener 102, thereby optimizing the assembly structure and assembly method and simplifying the assembly process.

[0053] Specifically, the snap fastener 102 of the panel assembly 1 is provided with an upward snap-fit ​​surface, which abuts against a facing surface on the upper shell assembly 3. The snap fastener 102 is located above the light-shielding part 101, thereby ensuring better assembly of the panel assembly 1 and the upper shell assembly 3 and ensuring the structural firmness and stability.

[0054] In another embodiment of the above-described embodiments of the present invention, the upper shell assembly 3 has an assembly groove 301 that matches the assembly part of the panel assembly 1. In the stored state, the connection between the assembly groove 301 of the upper shell assembly 3 and the receiving groove 601 of the lower shell assembly 6 forms a plane and / or a smooth curved surface, so that the panel assembly 1 and the light-shielding part 101 extending downward from the panel assembly 1 can be more integrated with the upper shell assembly 3 and the lower shell assembly 6 after assembly, thereby improving the user's experience.

[0055] Furthermore, in the stored state, after the light-shielding part 101 of the panel assembly 1 is placed in the receiving groove 601, the surface of the light-shielding part 101 of the panel assembly 1 is flush with the surface of the mounting groove 301 of the upper shell assembly 3 and the surface of the receiving groove 601 of the lower shell assembly 6. This further ensures that in the stored state, the light-shielding part 101 will not protrude from the surface of the upper shell assembly 3 and the lower shell assembly 6. The flush surface provides a better grip and makes it easier to store.

[0056] In one embodiment of the present invention, in the vertical thickness direction of the pulse oximeter, the ratio between the vertical distance of the light-shielding part 101 and the vertical distance between the upper and lower surfaces of the lower shell assembly 6 is between 1 / 3 and 2 / 3. This reasonable size ensures that the size setting of the light-shielding part 101 can effectively block light, while ensuring that the size design of the upper shell assembly 3, the lower shell assembly 6, and the panel assembly 1 can be more reasonable. This ratio can be 1 / 3, 1 / 2, 2 / 3, etc.

[0057] The present invention will now be described in more detail with a more specific embodiment.

[0058] In this detailed embodiment, the proposed finger clip pulse oximeter comprises a panel assembly 1, an electronic module 2, an upper shell assembly 3, an upper finger clip 4, a lower finger clip 5, a lower shell assembly 6, a battery 11, a battery cover 7, a light emitter 8, a receiver 9, and a rotating mechanism 10 that opens or clamps the upper finger clip 4 and the lower finger clip 5 relative to each other.

[0059] The panel assembly 1 extends downward on both sides to form a light-shielding part 101 that intersects with the lower shell assembly 6. The lower edges of the panel near both sides extend beyond the edge of the upper cover area, and a light-shielding curtain receiving groove 601 is provided on the corresponding side of the lower shell. The light-shielding part 101 and the receiving groove 601 are adapted in shape. When the pulse oximeter is in use, the downward-extending light-shielding curtain is located between the upper shell assembly 3 and the lower shell assembly 6, which plays a role in light shielding and avoids light leakage interference that affects the measurement results. Compared with setting a separate light-shielding device that protrudes from the panel plane, this design not only makes the product look beautiful but also simplifies the manufacturing process and reduces the number of assembly parts.

[0060] The upper finger clip 4 is installed and positioned in the upper shell assembly 3, and the lower finger clip 5 is assembled in the lower shell assembly 6. The walls of the upper finger clip 4 and the lower finger clip 5 form a receiving cavity 403 for placing the finger to be detected. One end of the receiving cavity 403 is provided with an opening. An arc-shaped first contact surface 401 is provided in the contact area between the lower finger clip 5 and the fingertip inside the receiving cavity 403. An arc-shaped second contact surface 501 is provided in the contact area between the upper finger clip 4 and the back of the finger inside the receiving cavity 403. A first mounting port is opened on the first contact surface 401, and a receiver 9 is installed in the first mounting port. A second mounting port is opened on the second contact surface 501 opposite to the first contact surface 401, and a light emitter 8 is installed in the second mounting port. The mounting positions of the receiver 9 and the light emitter 8 are interchangeable. The side of the upper finger gripper 4 facing away from the receiving cavity 403 is provided with a first cavity 402 between the upper shell and the lower shell. The side of the lower finger gripper 5 facing away from the receiving cavity 403 is provided with a second cavity 502 between the lower shell and the lower shell. The gripping comfort is improved after the finger is inserted into the receiving cavity 403 due to the cavity design.

[0061] The measuring finger is inserted into the receiving cavity 403 and comes into contact with the first contact surface 401 and the second contact surface 501. The first cavity 402 and the second cavity 502 are compressed, so that the first contact surface 401 and the second contact surface 501 cover the finger being measured, making the finger more comfortable and shielding it from light, thus avoiding light leakage interference during finger measurement.

[0062] In this detailed embodiment, the purpose of this utility model is achieved through at least the following innovative designs:

[0063] 1. The panel extends downwards to form a light-blocking curtain that intersects with the lower shell assembly 6. When the pulse oximeter is in use, the downward-extending light-blocking curtain is located between the upper shell assembly 3 and the lower shell assembly 6, which plays a role in blocking light and avoiding light leakage interference that affects the measurement results.

[0064] 2. The cavity design allows the measuring finger to be inserted into the receiving cavity 403, making contact with the first contact surface 401 and the second contact surface 501. This compresses the first cavity 402 and the second cavity 502, causing the first contact surface 401 and the second contact surface 501 to wrap around the finger being measured. This makes the finger more comfortable and also shields it from light, thus avoiding light leakage interference during finger measurement.

[0065] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A finger-clamp pulse oximeter, the oximeter comprising a panel assembly (1), an upper shell assembly (3), a lower shell assembly (6), an upper finger clamp pad (4), a lower finger clamp pad (5), a light emitter (8), and a receiver (9), wherein the upper finger clamp pad (4) is placed in the upper shell assembly (3), and the lower finger clamp pad (5) is placed in the lower shell assembly (6), the upper shell assembly (3) and the lower shell assembly (6) are fitted together and a rotating mechanism (10) for opening and clamping is provided between them, characterized in that: The panel assembly (1) is mounted on the upper shell assembly (3). The two sides of the panel assembly (1) extend past the mating surface of the upper shell assembly (3) and the lower shell assembly (6) toward the lower shell assembly (6) to form a light-shielding part (101). The lower shell assembly (6) is provided with a receiving groove (601) corresponding to the light-shielding part (101). The lower surface of the upper finger clip (4) is the first contact surface (401), and the upper surface of the lower finger clip (5) is the second contact surface (501). There is at least one cavity between the upper surface of the upper finger clip (4) and the upper shell assembly (3) and between the lower surface of the lower finger clip (5) and the lower shell assembly (6). The light emitter (8) is disposed on one of the upper finger clip (4) and the receiver (9) is disposed on the other. The pulse oximeter is configured to have a storage state and a use state. In the storage state, the mating surfaces between the upper shell assembly (3) and the lower shell assembly (6) are close together, and the light-shielding part (101) of the panel assembly (1) is placed in the receiving groove (601). In the use state, when an external finger or finger-like object is inserted between the upper shell assembly (3) and the lower shell assembly (6), the cavity is compressed, and the light-shielding part (101) of the panel assembly (1) is removed from the receiving groove (601). The upper finger clip (4), the lower finger clip (5), and the light-shielding parts (101) on both sides together form a receiving cavity (403) that accommodates and shields the external finger or finger-like object.

2. The finger clip pulse oximeter according to claim 1, characterized in that: The cavity includes a first cavity (402) between the upper surface of the upper finger gripper (4) and the upper shell assembly (3), and a second cavity (502) between the lower surface of the lower finger gripper (5) and the lower shell assembly (6).

3. The finger clip pulse oximeter according to claim 1, characterized in that: An electronic module (2) is accommodated between the panel assembly (1) and the upper shell assembly (3), and the panel assembly (1) is assembled with the upper shell assembly (3) by a snap fastener (102).

4. The finger clip pulse oximeter according to claim 3, characterized in that: The latch (102) of the panel assembly (1) is provided with an upward-facing latching surface, which abuts against a facing surface on the upper shell assembly (3), and the latch (102) is located above the light-shielding part (101).

5. The finger clip pulse oximeter according to claim 1, characterized in that: The upper shell assembly (3) has an assembly groove (301) that matches the assembly part of the panel assembly (1). In the stored state, the connection between the assembly groove (301) of the upper shell assembly (3) and the receiving groove (601) of the lower shell assembly (6) is a plane and / or a smooth curved surface.

6. The finger clip pulse oximeter according to claim 5, characterized in that: In the stored state, after the light-shielding part (101) of the panel assembly (1) is placed in the receiving groove (601), the surface of the light-shielding part (101) of the panel assembly (1) is flush with the surface of the mounting groove (301) of the upper shell assembly (3) and the surface of the receiving groove (601) of the lower shell assembly (6).

7. The finger clip pulse oximeter according to claim 1, characterized in that: In the vertical thickness direction of the pulse oximeter, the ratio between the vertical distance of the light-shielding part (101) and the vertical distance between the upper and lower surfaces of the lower shell assembly (6) is between 1 / 3 and 2 / 3.

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