CN216926564U

CN216926564U - Photoelectric probe and bilirubin concentration detector

Info

Publication number: CN216926564U
Application number: CN202123348594.XU
Authority: CN
Inventors: 邹沙舟; 卢宇; 许诺
Original assignee: Changsha Juyi Medical Technology Co ltd
Current assignee: Changsha Juyi Medical Technology Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-07-08
Anticipated expiration: 2031-12-28

Abstract

The utility model relates to a photoelectric probe and a bilirubin concentration detector, relating to the technical field of medical equipment and comprising a photoelectric probe lower cover, a first light guide column, a reflecting cup, a second light guide column, a light filter, a photodiode, an LED lamp bead and a circuit board; a first light guide column and a reflecting cup are arranged in the photoelectric probe lower cover, one end of the first light guide column is communicated with the outside, and the other end of the first light guide column is contacted with the reflecting cup; one end of the second light guide column penetrates through the reflection cup and contacts with the first light guide column, the other end of the second light guide column contacts with the LED lamp beads, the LED lamp beads are connected to the circuit board, one side of the light filter covers the opening of the reflection cup, the other side of the light filter is attached to the photodiode, and the photodiode and the circuit board are connected. The advantages are that: the photoelectric probe optical circuit is simple in design, low in optical loss, small and exquisite in whole product, flexible and capable of reducing the cost greatly, and the design difficulty is reduced.

Description

Photoelectric probe and bilirubin concentration detector

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a photoelectric probe and a bilirubin concentration detector.

Background

The bilirubin concentration detector commonly used in hospitals has the advantages of complex structure, large volume and high price, and is not suitable for being popularized and used in common families. The main reason is that the xenon lamp is generally used as a light source in the photoelectric probe of the existing bilirubin concentration detector, the light is guided into two separated channels through a spectroscope, then the light of different channels respectively passes through a blue-green filter, so that the blue light and the green light with specific wavelengths are obtained, the principle characteristic of a relatively accurate bilirubin value is obtained through the difference value of the detected blue light (the central wavelength is 450nm) and the detected green light (the central wavelength is 550nm), in the design, the xenon lamp generally needs an instant high-voltage driving circuit to normally emit light, and the use of the filter and a coaxial second light guide column also makes the light path system extremely complex to manufacture, the spectroscope is expensive and the cost is very high. Therefore, the bilirubin concentration detector manufactured by the traditional xenon lamp light splitting principle is heavy in appearance and high in price.

In another method, two light sources of 450nm and 550nm are directly selected to alternately irradiate the skin, and then the reflected light intensities are respectively identified. The filterable process of beam split can be avoided to the second kind of mode, reduction in production cost, but because there are two light sources, drive control circuit is more complicated, simultaneously because blue-green light's illumination collection is different, and the product is handheld, every constantly is changed with the contact state of skin, it subtracts to be the value of two way light in the follow-up calculation, this change can bring great error, different LED lamp pearl light intensity can have the decay of different degree along with the live time in addition, when the decay degree is asynchronous, the error increases thereupon.

The foregoing description is provided for general background information and does not necessarily constitute prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a photoelectric probe and a bilirubin concentration detector, the photoelectric probe has simple light path design and low light loss, reduces the design difficulty, and is small and exquisite in overall product, flexible and greatly reduced in cost.

The utility model provides a photoelectric probe, which comprises a photoelectric probe lower cover, a first light guide column, a reflecting cup, a second light guide column, a light filter, a photodiode, an LED lamp bead and a circuit board, wherein the photoelectric probe lower cover is provided with a light guide hole; the first light guide column and the reflecting cup are arranged inside the lower cover of the photoelectric probe, one end of the first light guide column is communicated with the outside, and the other end of the first light guide column is contacted with the reflecting cup; one end of the second light guide column penetrates through the reflection cup and contacts with the first light guide column, the other end of the second light guide column contacts with the LED lamp bead, the LED lamp bead is connected to the circuit board, one side of the light filter covers the opening of the reflection cup, the other side of the light filter is attached to the photodiode, and the photodiode and the circuit board are connected.

Further, the photoelectric probe lower cover comprises an upper cover body and a sleeve; the light guide device comprises an upper cover body, a sleeve, a first light guide column, a light reflecting cup and a light guide plate, wherein the hollow end of the upper cover body is opened, one end, far away from the opening, of the upper cover body is connected with the sleeve communicated with the interior of the upper cover body, the first light guide column is inserted into the sleeve, the light reflecting cup is installed inside the upper cover body, and the outer wall of the light reflecting cup is attached to the inner wall of the upper cover body.

Furthermore, the upper cover body and the reflecting cup are integrally conical, the upper cover body and the reflecting cup are hollow, and the inner wall of the reflecting cup is a paraboloid; the opening of the conical upper cover body is arranged at the bottom of the conical upper cover body, and the sleeve is connected to the vertex of the conical upper cover body; the opening of the conical light reflecting cup is arranged at the bottom of the conical light reflecting cup, and the vertex of the conical light reflecting cup is in contact with the first light guide column.

Furthermore, a first through hole is formed in the vertex of the conical light reflecting cup, and the second light guide column penetrates through the first through hole and is in contact with the first light guide column.

Furthermore, the photoelectric probe further comprises a photoelectric probe upper cover, a positioning block is arranged in the middle of the photoelectric probe upper cover, a through second through hole is formed in the positioning block, the photoelectric probe upper cover covers the opening of the upper cover body, the positioning block abuts against the inner wall of the reflection cup, one end, far away from the upper cover body, of the second light guide column penetrates through the second through hole to be contacted with the LED lamp beads, and the circuit board is connected to one side, far away from the upper cover body, of the photoelectric probe upper cover.

Furthermore, an installation groove is formed in the upper cover of the photoelectric probe, and the optical filter and the photodiode are fixed in the installation groove.

Furthermore, the number of the optical filters is two, and the two optical filters are centrally symmetrical with respect to the opening on the bottom surface of the light reflecting cup and cover the opening on the bottom surface of the light reflecting cup.

Further, the central lines of the sleeve, the first light guide column, the first through hole, the second light guide column and the second through hole are overlapped.

Further, the filter is a blue-green filter.

The utility model also provides a bilirubin concentration detector which comprises the photoelectric probe.

The photoelectric probe provided by the utility model eliminates the commonly adopted structure of manufacturing a complicated coaxial second light guide column and a spectroscope. The light source adopts the LED lamp bead with low power consumption, a flash lamp and a high-voltage power supply required by the flash lamp are not needed, and the light source and the driving circuit are simple. The reflecting cup with parabolic inner surface and high reflecting film can collect the reflected light efficiently and reflect the reflected light into parallel light to project the parallel light onto the photodiode homogeneously. The structure of the light path is greatly simplified, and the cost of the light path and the structure is reduced. No matter from hardware, still from structural design, all reduced the design degree of difficulty, reduced the volume, the cost reduces by a wide margin.

Drawings

Fig. 1 is an exploded view of a photoelectric probe according to a first embodiment of the present invention.

Fig. 2 is another schematic view of an exploded view of the optoelectronic probe of fig. 1.

Fig. 3 is a schematic cross-sectional structure diagram of the photoelectric probe in fig. 1.

Fig. 4 is another schematic cross-sectional structure diagram of the optoelectronic probe of fig. 1.

Fig. 5 is a schematic plan view of the optoelectronic probe of fig. 1.

Fig. 6 is a schematic structural diagram of the photoelectric probe in fig. 1.

Fig. 7 is another view-angle structure diagram of the optoelectronic probe in fig. 1.

The reference numerals and components referred to in the drawings are as follows:

1. photoelectric probe lower cover 11, upper cover body 12 and sleeve

2. First light guide column 3, reflection cup 31 and first through hole

4. Second light guide column 5, optical filter 6 and photodiode

7. LED lamp bead 8, circuit board 9, photoelectric probe upper cover

91. Positioning block 92, second through hole 93 and mounting groove

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

The terms first, second, third, fourth and the like in the description and in the claims of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Example 1

Fig. 1 is an exploded view of a photoelectric probe according to an embodiment of the present invention, fig. 2 is another schematic view of the exploded view of the photoelectric probe in fig. 1, fig. 3 is a schematic cross-sectional structure of the photoelectric probe in fig. 1, and fig. 4 is another schematic cross-sectional structure of the photoelectric probe in fig. 1. Referring to fig. 1 to 4, a photoelectric probe provided in an embodiment of the present invention includes a photoelectric probe lower cover 1, a first light guide pillar 2, a reflective cup 3, a second light guide pillar 4, a light filter 5, a photodiode 6, an LED lamp bead 7, and a circuit board 8; a first light guide column 2 and a reflecting cup 3 are arranged inside the photoelectric probe lower cover 1, one end of the first light guide column 2 is communicated with the outside, and the other end of the first light guide column 2 is contacted with the reflecting cup 3; one end of the second light guide column 4 penetrates through the reflection cup 3 to be in contact with the first light guide column 2, the other end of the second light guide column 4 is in contact with the LED lamp bead 7, the LED lamp bead 7 is connected to the circuit board 8, one surface of the light filter 5 (blue-green light filter) covers the opening of the reflection cup 3, the other surface of the light filter 5 is attached with the photodiode 6, and the photodiode 6 is connected with the circuit board 8. Specifically, the first light guide column 2 is made of a transparent material, and acrylic, glass and a second light guide column can be selected; the material of the reflecting cup 3 can be selected from alloy, preferably aluminum alloy (light weight), and a vacuum coating (reflection enhancement) is arranged outside the reflecting cup.

The photoelectric probe provided by the utility model is characterized in that a single LED light source luminous LED lamp bead 7 conducts light to a detection skin through a second light guide column 4, the light reflected by the skin is guided into a reflection cup 3 through a first light guide column 2 coaxial with the second light guide column 4, the light is respectively guided into an optical filter 5 through the light condensation effect of the reflection cup 3, the optical filter 5 is a blue-green optical filter, a photodiode 6 is attached to the other side of the optical filter 5 to obtain light intensity data, the photodiode 6 is connected with a circuit board 8, an original value is obtained by utilizing an A/D (analog/digital) acquisition of the single chip in the circuit board 8, then the original value is subjected to filtering treatment, the treated data is subjected to difference value calculation, the numerical value is calibrated through a standard tool, and the difference value is substituted into a formula to obtain a test value of a jaundice meter.

The photoelectric probe provided by the utility model has the advantages that the spectroscope is removed, the light source is replaced by the LED lamp bead 7 with low power consumption, the light source driving circuit of the circuit board 8 is simple in design, the light loss is reduced by using the reflection cup 3, the requirement on light leakage of the structure is greatly reduced, and the structure cost is reduced; therefore, the design difficulty is reduced from the hardware or the structural design, the whole product is small and exquisite, and is flexible, and the cost is greatly reduced.

It should be noted that the optoelectronic probe of the present invention further includes a power supply device (not shown in the figure), and the power supply device is connected to the circuit board 8 and is used for supplying power to the circuit board 8.

With further reference to fig. 2 and 3, the lower cover 1 of the photoelectric probe provided by the utility model comprises an upper cover body 11 and a sleeve 12; go up the inside cavity one end opening of lid 11, the one end of keeping away from the opening part at last lid 11 is connected with the sleeve pipe 12 with the inside intercommunication of last lid 11, and first leaded light post 2 is inserted in sleeve pipe 12, and reflection of light cup 3 is installed inside last lid 11, and the outer wall laminating of reflection of light cup 3 is on the inner wall of last lid 11. The upper cover body 11 and the reflecting cup 3 are integrally conical, the upper cover body 11 and the reflecting cup 3 are hollow, and the inner wall of the reflecting cup 3 is a paraboloid; the opening of the conical upper cover body 11 is arranged at the bottom of the conical upper cover body 11, and the sleeve 12 is connected at the vertex of the conical upper cover body 11; the opening of the conical reflecting cup 3 is arranged at the bottom of the conical reflecting cup 3, and the vertex of the conical reflecting cup 3 is contacted with the first light guide column 2.

The inner wall of the reflector 3 is parabolic, so that the reflected light is parallel and uniformly projected onto the photodiode 6. In addition, the inner wall of the reflecting cup 3 is also plated with a high-reflection film, so that the percutaneous reflected light can be efficiently collected.

Fig. 5 is a schematic plan view of the optoelectronic probe shown in fig. 1, fig. 6 is a schematic structural view of the optoelectronic probe shown in fig. 1, and fig. 7 is a schematic structural view of another view angle of the optoelectronic probe shown in fig. 1. Referring to fig. 1, 5, 6 and 7, a first through hole 31 is formed at the vertex of the conical light reflecting cup 3, and the second light guiding pillar 4 passes through the first through hole 31 and contacts with the first light guiding pillar 2. Photoelectric probe still includes photoelectric probe upper cover 9, the middle part of photoelectric probe upper cover 9 is equipped with locating piece 91, be equipped with the second through-hole 92 that runs through on the locating piece 91, photoelectric probe upper cover 9 covers the opening part at last lid 11, locating piece 91 supports and leans on the inner wall at anti-light cup 3, the one end that second leaded light post 4 kept away from last lid 11 passes second through-hole 92 and the contact of LED lamp pearl 7, circuit board 8 connects the one side that photoelectric probe upper cover 9 kept away from last lid 11. An installation groove 93 is provided on the upper cover 9 of the photoelectric probe, and the optical filter 5 and the photodiode 6 are fixed in the installation groove 93. The two optical filters 5 are arranged, and the two optical filters 5 are centrally symmetrical with respect to the opening on the bottom surface of the light reflecting cup 3 and cover the opening on the bottom surface of the light reflecting cup 3. The central lines of the sleeve 12, the first light guide column 2, the first through hole 31, the second light guide column 4 and the second through hole 92 coincide, and the central lines of the sleeve 12, the first light guide column 2, the first through hole 31, the second light guide column 4 and the second through hole 92 coincide to enable the light source conduction of the LED lamp beads 7 to be more accurate.

Example 2

The photoelectric probe provided in this embodiment is substantially the same as the photoelectric probe provided in the first embodiment, except for the optical filter 5.

The photoelectric probe that this embodiment provided, illumination and collection all use the second leaded light post, but do not use expensive light filter 5 (blue-green light filter) when gathering the second leaded light post beam split, but will gather the second leaded light post and divide into two bundles of equalling, projects blue-green light filter and subsequent photodiode 6 respectively.

The production cost of the photoelectric probe of this embodiment is a little lower than that of the first embodiment.

Based on the above description, the present invention has the following advantages:

1. according to the photoelectric probe provided by the utility model, a commonly adopted structure for manufacturing a complex coaxial second light guide column and a spectroscope is removed, a light source is replaced by the LED lamp bead 7 with low power consumption, the light source driving circuit of the circuit board 8 is simple in design, the light loss is reduced by using the reflection cup 3, the requirement on light leakage of the structure is greatly reduced, and the structure cost is reduced; therefore, the design difficulty is reduced from the hardware or the structural design, the whole product is small and exquisite, and is flexible, and the cost is greatly reduced.

2. The photoelectric probe provided by the utility model is used for a bilirubin detector, percutaneous bilirubin measurement is carried out by applying photoelectric technology, electronic technology and data processing, the percutaneous bilirubin value related to serum bilirubin concentration can be directly and accurately measured, and the serum bilirubin concentration value can be directly displayed through equipment conversion.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A photoelectric probe is characterized by comprising a photoelectric probe lower cover (1), a first light guide column (2), a light reflecting cup (3), a second light guide column (4), a light filter (5), a photodiode (6), LED lamp beads (7) and a circuit board (8); the first light guide column (2) and the reflecting cup (3) are arranged inside the photoelectric probe lower cover (1), one end of the first light guide column (2) is communicated with the outside, and the other end of the first light guide column (2) is contacted with the reflecting cup (3);

the one end of second leaded light post (4) is passed anti-light cup (3) with first leaded light post (2) contact, the other end of second leaded light post (4) with LED lamp pearl (7) contact, LED lamp pearl (7) are connected on circuit board (8), light filter (5) one side cover in the opening part of anti-light cup (3), light filter (5) another side laminating has photodiode (6), photodiode (6) with circuit board (8) are connected.

2. The optoelectronic probe according to claim 1, wherein the optoelectronic probe lower cover (1) comprises an upper cover body (11) and a sleeve (12); the light guide device is characterized in that one hollow end of the upper cover body (11) is opened, one end, far away from the opening, of the upper cover body (11) is connected with a sleeve (12) communicated with the interior of the upper cover body (11), the first light guide column (2) is inserted into the sleeve (12), the light reflecting cup (3) is installed inside the upper cover body (11), and the outer wall of the light reflecting cup (3) is attached to the inner wall of the upper cover body (11).

3. The photoelectric probe according to claim 2, wherein the upper cover body (11) and the reflection cup (3) are integrally conical, the upper cover body (11) and the reflection cup (3) are hollow inside, and the inner wall of the reflection cup (3) is paraboloid; the opening of the conical upper cover body (11) is arranged at the bottom of the conical upper cover body (11), and the sleeve (12) is connected to the vertex of the conical upper cover body (11);

the opening of the conical light reflecting cup (3) is arranged at the bottom of the conical light reflecting cup (3), and the vertex of the conical light reflecting cup (3) is contacted with the first light guide column (2).

4. The photoelectric probe according to claim 3, characterized in that a first through hole (31) is arranged at the vertex of the conical light reflecting cup (3), and the second light guide pillar (4) passes through the first through hole (31) to be in contact with the first light guide pillar (2).

5. The photoelectric probe according to claim 4, characterized in that the photoelectric probe further comprises a photoelectric probe upper cover (9), a positioning block (91) is arranged in the middle of the photoelectric probe upper cover (9), a second through hole (92) penetrating through the positioning block (91) is formed in the positioning block (91), the photoelectric probe upper cover (9) covers an opening of the upper cover body (11), the positioning block (91) abuts against the inner wall of the reflection cup (3), one end, far away from the upper cover body (11), of the second light guide column (4) penetrates through the second through hole (92) to contact with the LED lamp bead (7), and the circuit board (8) is connected to one surface, far away from the upper cover body (11), of the photoelectric probe upper cover (9).

6. The photoelectric probe according to claim 5, wherein a mounting groove (93) is provided on the photoelectric probe upper cover (9), and the optical filter (5) and the photodiode (6) are fixed in the mounting groove (93).

7. The photoelectric probe according to claim 6, wherein the number of the optical filters (5) is two, and the two optical filters (5) are centrally symmetrical with respect to the opening on the bottom surface of the reflective cup (3) and cover the opening on the bottom surface of the reflective cup (3).

8. The optoelectronic probe according to claim 5, wherein the centerlines of the sleeve (12), the first light guide (2), the first through hole (31), the second light guide (4), and the second through hole (92) coincide.

9. An optoelectronic probe according to claim 1, wherein the filter (5) is a blue-green filter.

10. A bilirubin level detector, comprising the photoelectric probe of any one of claims 1 to 9.