CN210204743U - Finger clip type blood oxygen measuring device adaptive to thick and thin fingers - Google Patents

Abstract

The utility model discloses a finger-clip type blood oxygen measuring device adaptive to thick and thin fingers, which comprises a shell, an upper finger pad, a lower finger pad, a light emitter, a receiver and a rotating mechanism, wherein the upper finger pad, the lower finger pad, the light emitter, the receiver and the rotating mechanism are arranged in the shell; the middle area of the arc-shaped first contact surface is also provided with a first concave surface along the transverse direction of the fingers, the two sides of the first concave surface of the first contact surface are respectively provided with a second concave surface, and the bending degree of the first concave surface is greater than that of the second concave surface. The utility model discloses make and indicate upper and lower finger pad structure ability adaptation thickness, the finger of variation in size of clamp formula blood oxygen measuring device, avoided producing the light leak when measuring the finger of different thicknesses and disturb and influence measuring result.

Description

Finger clip type blood oxygen measuring device adaptive to thick and thin fingers

Technical Field

The utility model relates to a medical treatment check out test set technical field especially relates to a finger clip formula blood oxygen measuring device of thick and thin finger of adaptation.

Background

The structure of the existing finger clip blood oxygen measuring probe mainly comprises an upper shell and a lower shell of a finger clip, a connecting spring, an upper finger pad and a lower finger pad and an optical sensor element, wherein the upper finger pad and the lower finger pad are arranged on the upper shell and the lower shell and are made of flexible materials used for contacting the finger parts of a human body, and the comfortable feeling of finger contact is improved.

The existing contact area between the upper and lower finger pads and the fingers is mainly made into a cambered surface to contact with the cambered surface of the fingers. However, the upper and lower finger pad structure with only one arc surface cannot be adapted to fingers with different thicknesses and sizes, and light leakage interference is easily generated to influence the measurement result. If the finger pad uniformly adopts the cambered surface with larger radian, the cambered surface of the finger pad can be well jointed with the edge of a thick finger when the thick finger is measured, so that the shading requirement is met, but when the thin finger is measured, the cambered surface of the finger pad is large and can not be well jointed with the edge of the thin finger, so that the light leakage at the edge of the thin finger can be caused, and the result is influenced; or the finger pad uniformly adopts the cambered surface with the smaller radian, the cambered surface of the finger pad can be well attached to the edge of the thin finger when the thin finger is measured, the shading requirement is met, but when the thick finger is measured, the edge of the thick finger is mostly exposed outside the cambered surface of the finger pad due to the fact that the thick finger cannot be placed or after the thick finger is placed because the cambered surface of the finger pad is small, the thick finger cannot be wrapped well, light leakage is caused, and the measuring result is also influenced.

Therefore, the prior art has yet to be developed.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing prior art, an object of the present invention is to provide a finger clip type blood oxygen measuring device with adaptive finger pad, which aims to make the finger pad structure adaptive to the finger with different sizes and thickness, and avoid the influence of light leakage interference on the measurement result when measuring the finger with different sizes.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a finger-clip type blood oxygen measuring device adaptive to thick and thin fingers comprises a shell, an upper finger pad, a lower finger pad, a light emitter, a receiver and a rotating mechanism, wherein the upper finger pad, the lower finger pad, the light emitter and the receiver are arranged in the shell, the rotating mechanism enables the upper finger pad and the lower finger pad to be relatively opened or clamped, a containing cavity for placing a detected finger is defined by the wall surfaces of the upper finger pad and the lower finger pad, an opening is formed in one end of the containing cavity, an arc-shaped first contact surface is arranged in the contact area of the lower finger pad and the finger belly in the containing cavity, and an arc-shaped second contact surface is arranged in the contact area of the upper finger; the middle area of the arc-shaped first contact surface is also provided with a first concave surface along the transverse direction of the fingers, the two sides of the first concave surface of the first contact surface are respectively provided with a second concave surface, and the bending degree of the first concave surface is greater than that of the second concave surface.

Wherein, the first concave surface that indicates the pad down extends in proper order along the opening direction that holds the chamber and is provided with first cambered surface and second cambered surface, and first cambered surface upwards the arch will hold the chamber and diminish along the opening direction gradually, and the second cambered surface undercut will the opening part grow.

The lower finger pad is provided with first shading surfaces extending upwards at the edges of the two second concave surfaces respectively, the upper finger pad is provided with second shading surfaces extending upwards at the two edges of the second contact surface respectively, the first shading surfaces, the second concave surfaces and the first concave surfaces form an M-shaped structure for the lower finger pad, the second shading surfaces and the second contact surface form an M-shaped structure for the upper finger pad, and the first shading surfaces and the second shading surfaces are attached.

And a third shading surface is arranged on the lower finger pad in an upward extending manner in the direction of the first concave surface departing from the opening.

The first concave surface is provided with a first mounting opening, and a receiver is mounted in the first mounting opening; and a second mounting hole is formed in the second contact surface opposite to the first mounting hole, a light emitter is mounted in the second mounting hole, and the mounting positions of the receiver and the light emitter can be interchanged.

The surface of the receiver of the first mounting port and the surface of the light emitter of the second mounting port are respectively provided with a concave transparent contact layer matched with the surface shape of the finger.

The shell comprises an upper shell and a lower shell, an upper finger pad is fixed on the upper shell, a lower finger pad is fixed on the lower shell, and the rotating mechanism is arranged between the upper shell and the lower shell.

The upper shell comprises an upper cover, an upper support and a first shell which are connected in sequence, the lower shell comprises a lower cover, a lower support and a second shell which are connected in sequence, the end part of the edge of the upper finger pad type M-shaped structure is fixed on the first shell, the end part of the edge of the lower finger pad type M-shaped structure is fixed on the second shell, the rotating mechanism is arranged between the first shell and the second shell, a first cavity is arranged between the surface of the upper finger pad deviating from the containing cavity and the upper support, and a second cavity is arranged between the surface of the lower finger pad deviating from the containing cavity and the lower support.

The rotating mechanism comprises a mounting column and a spring, the mounting column is arranged on the first shell or the second shell, the middle of the spring is fixed on the mounting column, the first end of the spring is abutted to the first shell, and the second end of the spring is abutted to the second shell.

The battery protection device comprises an upper support, a first shell, a lower support and a switch, wherein a control circuit board is further arranged between the upper support and the first shell, the control circuit board is connected with the switch exposed out of the upper cover, and the lower support is further provided with a battery installation part for installing a battery.

The middle area of the second contact surface is provided with a third concave surface along the transverse direction of the fingers, the two sides of the third concave surface of the second contact surface are respectively provided with a fourth concave surface, and the bending degree of the third concave surface is greater than that of the fourth concave surface.

Wherein the light emitter and the receiver are connected to an external measurement system through a cable.

The utility model discloses a finger clip formula blood oxygen measuring device of thick finger of adaptation, through set up first concave surface and second concave surface on one of them and the finger abdomen contact area's of last finger pad, lower finger pad first contact surface, first concave surface sets up the middle zone at first contact surface along the finger horizontal direction, the second concave surface sets up the both sides at first concave surface, the crooked degree of first concave surface is greater than the crooked degree of second concave surface, first concave surface, second concave surface and finger surface shape looks adaptation, like this, when the finger of measurationing is thinner, first concave surface can wrap up the edge that thin finger indicates the abdomen completely, to the finger abdomen border of thin finger shade effect, when the finger of measurationing, first concave surface parcel thick finger indicates the middle part of abdomen, the second concave surface parcel thick finger indicates the marginal part of abdomen, the combination parcel of first concave surface and second concave surface live thick finger, and to the finger abdomen border play the shading effect of thick finger, like this, the utility model discloses the finger presss from both sides formula blood oxygen measuring device can the blood oxygen measurement of the thin finger of adaptation, also can the blood oxygen measurement of the thick finger of adaptation, takes place the light leak when having avoided measuring different thick fingers and disturb and influence the measuring result, has improved its measuring application scope.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a first embodiment of the finger-clip type blood oxygen measuring device adapted to thick and thin fingers of the present invention.

Fig. 2 is a schematic view of the structure of fig. 1 in an open state.

Fig. 3 is a first cross-sectional view of the structure of fig. 1.

Fig. 4 is a second cross-sectional view of the structure of fig. 1.

FIG. 5 is a cross-sectional view of the upper finger pad, the lower finger pad, the light emitter, and the receiver.

Fig. 6 is a schematic view of the structure of the upper finger pad of fig. 2.

Fig. 7 is a schematic structural view of the lower finger pad of fig. 2.

Fig. 8 is a cross-sectional view of the structure of fig. 7.

Fig. 9 is an exploded view of the structure of fig. 1.

Fig. 10 is a schematic view of the spring of fig. 9.

Description of reference numerals:

1-measuring device, 10-housing, 11-upper housing, 111-upper cover, 112-upper support, 113-first housing, 12-lower housing, 121-lower cover, 122-lower support, 123-second housing, 21-upper finger pad, 22-lower finger pad, 211, 221-end, 31-illuminator, 32-receiver, 40-rotation mechanism, 41-mounting post, 42-spring, 421-middle, 422-first end, 423-second end, 50-containing cavity, 51-opening, 61-first contact surface, 611-first concave surface, 6111-first mounting opening, 612-second concave surface, 613-first arc surface, 614-second arc surface, 62-second contact surface, 621-second mounting opening, 622-third concave surface, 623-fourth concave surface, 63-first light shading surface, 64-second light shading surface, 65-third light shading surface, 70 transparent contact layer, 81-first cavity, 82-second cavity, 91-control circuit board, 92-switch and 93-battery.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 4, a finger clip type blood oxygen measuring device 1 adapted to measure fingers includes a housing 10, an upper finger pad 21, a lower finger pad 22, a light emitter 31, a receiver 32 disposed in the housing 10, and a rotating mechanism 40 for opening or clamping the upper finger pad 21 and the lower finger pad 22, wherein a containing cavity 50 for placing a finger to be measured is defined by the walls of the upper finger pad 21 and the lower finger pad 22, and an opening 51 is disposed at one end of the containing cavity 50. The upper finger pad 21 and the lower finger pad 22 of the embodiment of the present invention are made of flexible material, and the installation positions in the housing 10 can be interchanged. Light for oximetry is emitted by light emitter 31 through the finger and received by receiver 32. The housing 10 may be of unitary construction or of upper and lower housing construction. The rotation mechanism 40 may be a resilient clamping mechanism or a releasable or lockable clamping mechanism. The embodiment of the utility model provides an opening 51 department that holds chamber 50 is used for putting into measurand finger to holding chamber 50. The utility model discloses indicate to press from both sides formula blood oxygen measuring device 1's illuminator 31 and receiver 32 to be connected to outside measurement system through the cable, and make the utility model discloses a indicate to press from both sides formula blood oxygen measuring device 1 and become a blood oxygen measuring probe, perhaps the utility model discloses indicate to press from both sides formula blood oxygen measuring device 1 and set up the measurement mainboard in the casing, measure the mainboard and make in illuminator 31 and receiver 32 lug connection casing 10 the utility model discloses a indicate to press from both sides formula blood oxygen measuring device 1 and become an solitary blood oxygen measuring instrument.

As shown in fig. 5 and 6, an arc-shaped first contact surface 61 is arranged in the contact area of the lower finger pad 22 and the finger pulp in the accommodating cavity 50, and an arc-shaped second contact surface 62 is arranged in the contact area of the upper finger pad 21 and the finger back in the accommodating cavity 50. In the embodiment of the present invention, after the finger is put into the accommodating chamber 50, the curved first contact surface 61 of the lower finger pad 22 contacts with the finger web of the finger, and the curved second contact surface 62 of the upper finger pad 21 contacts with the finger back of the finger.

As shown in fig. 7, the middle region of the curved first contact surface 61 of the lower finger pad 22 of the present invention is further provided with a first concave surface 611 along the lateral direction of the finger, the first contact surface 61 is formed with a second concave surface 612 on both sides of the first concave surface 611, the bending degree of the first concave surface 611 is greater than that of the second concave surface 612, both the first concave surface 611 and the second concave surface 612 can be adapted to the surface shape of the finger, such as the abdomen or the back of the finger, in the embodiment of the present invention, each side of both sides of the first concave surface 611 can be provided with one or more than two second concave surfaces 612. As shown in FIG. 5, the cross-section of the first concave surface 611 and the second concave surface 612 are concave arcs, and the radius of the arc of the first concave surface 611 is smaller than the radius of the arc of the second concave surface 612, such that the first concave surface 611 is more curved than the second concave surface 612. I.e., the first concave surface 611 has a smaller arc radius to accommodate a thin finger, and the second concave surface 612 has a larger arc radius to accommodate a thick finger.

Preferably, as shown in fig. 5, the first concave surface 611 and the second concave surfaces 612 on both sides transition in an arc shape to form a wave-shaped curved surface. The arrangement of the arc transition enables the first concave surface 611 and the second concave surface 612 to better fit with the finger pulp.

Because the lower finger pad 22 of the present invention is provided with the first concave surface 611 and the second concave surface 612 in the finger abdomen contact area, when the measured finger is a thin finger, the first concave surface 611 can completely wrap the edge of the finger abdomen of the thin finger, and can shield the edge of the finger abdomen of the thin finger, thereby avoiding light leakage interference when the thin finger is measured; when the measured finger is a thick finger, the first concave surface 611 wraps the middle part of the finger pulp of the thick finger, the second concave surface 612 wraps the edge part of the finger pulp of the thick finger, and the combination of the first concave surface 611 and the second concave surface 612 wraps the thick finger and shields the edge of the finger pulp of the thick finger, so that light leakage interference during measurement of the thick finger is avoided. Thus, the utility model discloses finger presss from both sides formula blood oxygen measuring device 1 can the blood oxygen measurement of the thin finger of adaptation, also can the blood oxygen measurement of the thick finger of adaptation, has improved the utility model discloses finger presss from both sides formula blood oxygen measuring device 1's application scope and measuring accuracy.

Further, as shown in fig. 6, the middle area of the second contact surface 62 of the upper finger pad 21 of the present invention is provided with a third concave surface 622 along the lateral direction of the finger, the second contact surface 62 is formed with fourth concave surfaces 623 on both sides of the third concave surface 622, and the bending degree of the third concave surface 622 is greater than that of the fourth concave surfaces 623. Therefore, the upper finger pad and the lower finger pad are both provided with the two sections of concave surface type structures, and the finger pads can be further adapted to fingers with different thicknesses for blood oxygen measurement. As shown in fig. 4 and 8, further, the first concave surface 611 of the lower finger pad 22 of the present invention is provided with a first arc surface 613 and a second arc surface 614 along the direction of the opening 51 of the accommodating chamber 50 in a sequential extending manner, the first arc surface 613 protrudes upwards to accommodate the chamber 50 to become smaller along the direction of the opening 51, and the second arc surface 614 sinks downwards to enlarge the opening 51.

The upper and lower finger pads of the existing finger clip oximeter keep a closed elastic force between the upper and lower finger pad structures mainly through a spring structure, and provide a wearing friction force after the finger is worn, thereby preventing the finger from slipping. But because the shape of people' S finger usually is for pointing the point thin, indicates that the root is thick, and it is not good to lead to current finger clip oximetry antiskid to take off the nature, and the utility model discloses a finger pad 22 extends the first cambered surface 613 and the second cambered surface 614 that set gradually along the opening 51 direction that holds chamber 50 under and is "S" shape, and wherein first cambered surface 613 is upwards protruding to be held chamber 50 and diminishes along the opening 51 direction gradually for holding chamber 50 narrows down at the second finger joint position of human finger, combines the unsmooth shape of human condyle, and this "S" shape structure can produce good anti-skidding effect, wears comfortablely simultaneously.

The shape of the second arc 614 recessed downward at the opening 51 of the accommodating chamber 50 makes the opening 51 of the accommodating chamber 50 larger to facilitate the insertion of fingers.

Preferably, as shown in fig. 5 to 7, the lower finger pad 22 is provided with a first light shading surface 63 extending upward at the edge of the two second concave surfaces 612, the upper finger pad 21 is provided with a second light shading surface 64 extending upward at the two edges of the second contact surface 62, the first light shading surface 63, the second concave surface 612 and the first concave surface 611 form the lower finger pad 22 into an M-like structure, the second light shading surface 64 and the second contact surface 62 form the upper finger pad 21 into an M-like structure, and the first light shading surface 63 is attached to the second light shading surface 64. The first light shading surface 63 and the second light shading surface 64 are attached to prevent light leakage interference of two side edges of a finger, the upper and lower finger pads are convenient to attach to the first light shading surface 63 and the second light shading surface 64 due to the M-shaped structure, and meanwhile, the middle area of the finger pads is provided with enough deformation space to adapt to fingers with different thicknesses after the fingers are clamped by the upper and lower finger pads due to the M-shaped structure.

Further, as shown in fig. 7 and 8, the lower finger pad 22 is provided with a third light shading surface 65 extending upward in a direction away from the opening 51 of the first concave surface 611. The third light shielding surface 65 can prevent light leakage interference in front of the fingertip, and further avoid light leakage interference. Preferably, third obscuration 65 is shaped to fit the shape of the fingertip, to facilitate placement of the fingertip portion, to improve comfort of wearing.

With continuing reference to fig. 5, the first concave surface 611 of the embodiment of the present invention is provided with a first mounting opening 6111, and a receiver 32 is installed in the first mounting opening 6111; the second contact surface 62 is provided with a second mounting hole 621 opposite to the first mounting hole 6111, and the light emitter 31 is mounted in the second mounting hole 621. The installation positions of the receiver 32 and the light emitter 31 can be interchanged.

Preferably, the first mounting hole 6111 and the second mounting hole 621 are respectively provided with a concave transparent contact layer 70 adapted to the shape of the surface of the finger, on the surface of the receiver 32 and on the surface of the light emitter 31. The transparent contact layer 70 prevents fingers from directly contacting the light emitter 31 and the receiver 32, on one hand, the light emitter 31 and the receiver 32 can be protected, on the other hand, the arrangement of the transparent material ensures the normal operation of the light emitter 31 and the receiver 32, and meanwhile, the concave arrangement of the transparent contact layer 70 can be matched with the surface shape of the fingers, so that the fingers can be well contacted and attached with the transparent contact layer 70.

As shown in fig. 4 and 5, the housing 10 of the embodiment of the present invention includes an upper housing 11 and a lower housing 12, the upper finger pad 21 is fixed to the upper housing 11, the lower finger pad 22 is fixed to the lower housing 12, and the rotating mechanism 40 is disposed between the upper housing 11 and the lower housing 12. The utility model discloses an upper casing 11 and lower casing 12 have the supporting role, have to indicate pad 21, indicate pad 22 down to last finger simultaneously and shelter from external light, prevent the effect of external light interference.

Specifically, as shown in fig. 3 and 9, the upper housing 11 includes an upper cover 111, an upper bracket 112, and a first housing 113 that are sequentially connected, the lower housing 12 includes a lower cover 121, a lower bracket 122, and a second housing 123 that are sequentially connected, an end 211 of an edge of the upper finger pad 21 with the M-shaped structure is fixed to the first housing 113, an end 211 of an edge of the lower finger pad 22 with the M-shaped structure is fixed to the second housing 123, the rotating mechanism 40 is disposed between the first housing 113 and the second housing 123, a first cavity 81 is disposed between a surface of the upper finger pad 21 facing away from the accommodating cavity 50 and the upper bracket 112, and a second cavity 82 is disposed between a surface of the lower finger pad 22 facing away from the accommodating cavity 50 and the lower bracket 122. The first cavity 81 and the second cavity 82 are arranged to sufficiently adapt to the deformation of the upper finger pad 21 and the lower finger pad 22 after fingers are put in, so that the interference of the shell 10 on the upper finger pad and the lower finger pad is prevented from influencing the putting operation of the fingers. The fixing positions of the upper finger pad 21, the lower finger pad 22 and the shell 10 are respectively the end 211 of the edge of the M-shaped structure of the upper finger pad 21 and the end 221 of the edge of the M-shaped structure of the lower finger pad 22, so that the middle parts of the M-shaped structures of the upper finger pad 21 and the lower finger pad 22 and the shell 10 are left as much as possible, and the deformation space of the M-shaped structures of the upper finger pad 21 and the lower finger pad 22 is fully utilized as much as possible.

As an embodiment, the utility model discloses a slewing mechanism 40 is including setting up erection column 41 and the spring 42 on first shell 113 or second shell 123, and the middle part 421 of spring 42 is fixed in erection column 41, and the first end 422 and the first shell 113 butt of spring 42, and the second end 423 and the second shell 123 butt of spring 42, as shown in fig. 10, the utility model discloses an erection column 41 sets up on second shell 123, and spring 42 provides the resilience force after first shell 113 and the second shell 123 open.

Preferably, the control circuit board 91 is further disposed between the upper bracket 112 and the first housing 113, the control circuit board 91 is connected to the switch 92 exposed out of the upper cover 111, and the lower bracket 122 is further provided with a battery mounting portion 1221 to mount the battery 93. Control circuit board 91 has the data processing function, need not external equipment and can independently accomplish the test, can be directly will the utility model discloses indicate formula of pressing from both sides blood oxygen measuring device 1 to become an solitary blood oxygen measuring instrument. Switch 92 opens and closes control circuit board 91's work, and battery 93 makes the finger presss from both sides formula blood oxygen measuring device 1 of the embodiment of the utility model embodiment also can normally work without connecting external power source.

It can be understood that the finger clip type blood oxygen measuring device 1 of the embodiment of the present invention can also expose and be provided with a display screen at the position of the upper cover 111, the display screen is in communication connection with the control circuit board 91, and the convenient user of the display screen can directly view the measurement result.

The embodiment of the utility model provides a finger clip formula blood oxygen measuring device 1 of thick and thin finger of adaptation, through at last finger pad 21, one of them of lower finger pad 22 indicates the first contact surface 61 of abdomen contact area with the finger and set up first concave surface 611 and second concave surface 612, first concave surface 611 sets up the middle zone at first contact surface 61 along the horizontal direction of finger, second concave surface 612 sets up the both sides at first concave surface 611, the crooked degree of first concave surface 611 is greater than the crooked degree of second concave surface 612, first concave surface 611, second concave surface 612 and finger surface shape looks adaptation. The utility model discloses finger clamp formula blood oxygen measuring device 1 can the blood oxygen measurement of the thin finger of adaptation, also can the blood oxygen measurement of the thick finger of adaptation, takes place the light leak when having avoided measuring different thick and thin fingers and disturb and influence the measuring result, has improved the application scope when this product is measured.

It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is communication connection between them, and specifically, the connection relationship can be implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims (12)

1. A finger-clip type blood oxygen measuring device adaptive to thick and thin fingers comprises a shell, an upper finger pad, a lower finger pad, a light emitter, a receiver and a rotating mechanism, wherein the upper finger pad, the lower finger pad, the light emitter and the receiver are arranged in the shell, the rotating mechanism enables the upper finger pad and the lower finger pad to be relatively opened or clamped, a containing cavity for placing a detected finger is defined by the wall surfaces of the upper finger pad and the lower finger pad, an opening is formed in one end of the containing cavity, an arc-shaped first contact surface is arranged in the contact area of the lower finger pad and the finger belly in the containing cavity, and an arc-shaped second contact surface is arranged in the contact area of the upper finger;

it is characterized in that the preparation method is characterized in that,

the middle area of the arc-shaped first contact surface is also provided with a first concave surface along the transverse direction of the fingers, the two sides of the first concave surface of the first contact surface are respectively provided with a second concave surface, and the bending degree of the first concave surface is greater than that of the second concave surface.

2. The finger-clip type blood oxygen measuring device adapted to thick and thin fingers of claim 1, wherein the first concave surface of the lower finger pad is sequentially provided with a first arc surface and a second arc surface in an extending manner along the opening direction of the accommodating cavity, the accommodating cavity is gradually reduced along the opening direction by the upward protrusion of the first arc surface, and the opening is enlarged by the downward depression of the second arc surface.

3. The finger-clip-type blood oxygen measuring device adapted to thick and thin fingers of claim 1, wherein the lower finger pad is provided with a first light shielding surface extending upward from the edges of the two second concave surfaces, the upper finger pad is provided with a second light shielding surface extending upward from the edges of the second contact surface, the first light shielding surface and the second concave surface form the lower finger pad into an M-like structure, the second light shielding surface and the second contact surface form the upper finger pad into an M-like structure, and the first light shielding surface is attached to the second light shielding surface.

4. The fmger-grip oximeter device according to claim 1, wherein the lower finger pad has a third light shielding surface extending upward from the first concave surface in a direction away from the opening.

5. The finger-clip oximeter device adapted to fit thick and thin fingers of claim 1,

the first concave surface is provided with a first mounting opening, and a receiver is mounted in the first mounting opening;

and a second mounting hole is formed in the second contact surface opposite to the first mounting hole, a light emitter is mounted in the second mounting hole, and the mounting positions of the receiver and the light emitter can be interchanged.

6. The finger-clip oximeter device according to claim 5, wherein the first mounting port and the second mounting port are respectively provided with a concave transparent contact layer adapted to the shape of the finger surface.

7. The finger-clip oximeter of claim 3, wherein the case comprises an upper case and a lower case, the upper finger pad is fixed to the upper case, the lower finger pad is fixed to the lower case, and the rotating mechanism is disposed between the upper case and the lower case.

8. The finger-clip-type blood oxygen measuring device adapted to thick and thin fingers of claim 7, wherein the upper case comprises an upper cover, an upper bracket and a first shell which are sequentially connected, the lower case comprises a lower cover, a lower bracket and a second shell which are sequentially connected, the end of the edge of the M-shaped structure of the upper finger pad is fixed to the first shell, the end of the edge of the M-shaped structure of the lower finger pad is fixed to the second shell, the rotating mechanism is arranged between the first shell and the second shell, a first cavity is arranged between the upper finger pad and the upper bracket, and a second cavity is arranged between the lower finger pad and the upper bracket.

9. The fmger-finger-compliant finger clip oximeter device according to claim 8, wherein the rotation mechanism comprises a mounting post disposed on the first housing or the second housing, and a spring having a middle portion fixed to the mounting post, a first end of the spring abutting the first housing, and a second end of the spring abutting the second housing.

10. The finger-clip type blood oxygen measuring device adapted to fit thick and thin fingers of claim 9, wherein a control circuit board is further disposed between the upper bracket and the first casing, the control circuit board is connected with a switch exposed out of the upper cover, and the lower bracket is further provided with a battery mounting portion to which a battery is mounted.

11. The finger-clip type oximeter according to claim 1, wherein a third concave surface is formed in a middle area of the second contact surface along a lateral direction of the finger, the second contact surface is formed with fourth concave surfaces on two sides of the third concave surface, and a bending degree of the third concave surface is greater than a bending degree of the fourth concave surface.

12. The fmger-finger-compliant finger clip oximeter device according to claim 1, wherein the light emitter and receiver are connected to an external measurement system via a cable.

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