CN220289401U - Simulator for calibrating oxygen saturation of tissue - Google Patents
Simulator for calibrating oxygen saturation of tissue Download PDFInfo
- Publication number
- CN220289401U CN220289401U CN202321006125.6U CN202321006125U CN220289401U CN 220289401 U CN220289401 U CN 220289401U CN 202321006125 U CN202321006125 U CN 202321006125U CN 220289401 U CN220289401 U CN 220289401U
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- light
- simulator
- tissue
- oxygen saturation
- calibrating
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 58
- 239000001301 oxygen Substances 0.000 title claims abstract description 58
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- 239000000523 sample Substances 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000008280 blood Substances 0.000 description 6
- 210000004369 blood Anatomy 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 238000002834 transmittance Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001320 near-infrared absorption spectroscopy Methods 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The utility model provides a simulator for calibrating tissue oxygen saturation, which comprises an opaque box body capable of forming a sealing cavity, wherein a reflector group is arranged in the opaque box body, at least one reflector and at least one bracket are arranged in parallel along a first direction in the reflector group, and the arrangement sequence of the reflectors and the brackets is adjustable; the clamping groove is formed by inwards sinking one surface of the light-impermeable box body facing the reflecting plate, and is used for fixing the tissue oxygen sensing piece to be calibrated; and a replaceable filter plate is arranged between the clamping groove and the reflector plate group. The simulator for calibrating the oxygen saturation of the tissue has a simple structure, is convenient to operate, can be switched among different optical parameters to simulate different absorption effects of tissues with different oxygen saturation on near infrared light, meets the multi-point calibration requirement, isolates external light rays, and is more accurate in calibration.
Description
Technical Field
The utility model belongs to the technical field of medical simulation instruments, and particularly relates to a simulator for calibrating oxygen saturation of tissues.
Background
Tissue oxygen saturation (Tissue Oxygen Index, TOI) is used to reflect the total oxygen saturation of all blood in the tissue being measured, and is a weighted average of arterial and venous oxygen saturation in the tissue being measured. Near infrared tissue blood oxygen parameter nondestructive detection technology (Near Infrared Spectroscpy, NIRS) is an emerging physiological parameter detection technology for about 20 years, and when a human body is monitored healthily, oxygen saturation of tissues of all parts of the body such as brain is required to be detected, the principle is that light which is clearly visible and is about 680nm to about 800nm which can not be detected by human eyes is injected into the tissue to be detected, the absorption effect of the tissue on the light is obtained by measuring the intensity of the emergent light, and then the oxygen saturation of the tissue to be detected is finally obtained through a series of calculation processes. The product of tissue oxygen saturation is required to be calibrated after the production of the product by utilizing a near infrared tissue blood oxygen parameter nondestructive testing technology, a calibration simulator on the market is mostly electronic, an integrating sphere model or a blood model for tissue oxygen saturation calibration is used, the conventional integrating sphere model can only perform single-point calibration, the tissue oxygen product is simply fixed on the model for calibration, the product is easily interfered by external light, the reflection position is not adjustable, the optical parameter adjustment is limited, the core component in the blood model is human blood, the product is unstable in nature and cannot be stored for a long time, the product must be prepared on site before the calibration test is performed, the indexes of the product are difficult to be consistent, the cost is relatively high, and the process is complex, so the two calibration modes are unfavorable for parameter calibration of the tissue oxygen product.
Disclosure of Invention
In view of the above problems in the prior art, the main object of the present utility model is to provide a simulator for calibrating tissue oxygen saturation, which has a simple structure, is easy to operate, can switch between different optical parameters to simulate different absorption effects of tissues with different oxygen saturation on near infrared light, meets the multi-point calibration requirement, isolates external light, and has more accurate calibration.
The aim of the utility model is achieved by the following technical scheme:
the utility model provides a simulator for calibrating tissue oxygen saturation, which comprises an impermeable box body capable of forming a sealed cavity, wherein,
the light-proof box body is internally provided with a light reflecting plate group, at least one light reflecting plate and at least one bracket are arranged in parallel along a first direction, and the arrangement sequence of the light reflecting plate and the bracket is adjustable; the clamping groove is formed by inwards sinking one surface of the light-impermeable box body facing the reflecting plate, and is used for fixing the tissue oxygen sensing piece to be calibrated; and a replaceable filter plate is arranged between the clamping groove and the reflector plate group.
As a further description of the above technical solution, the light-impermeable casing includes a casing portion and a cover portion, where the cover portion is detachably disposed on the casing portion.
As a further description of the above technical solution, the case portion includes a bottom wall opposite to the lid portion, and a side wall connecting the lid portion and the bottom wall, the side wall having a first stepped portion protruding inward, the lid portion having a second stepped portion protruding outward; when the box body is airtight, one surface of the first step part facing the cover part abuts against one surface of the second step part facing away from the cover part.
As a further description of the above technical solution, the cover portion is disposed parallel to the reflector, and the clamping groove is formed by recessing a surface of the cover portion facing the reflector inward.
As a further description of the above technical solution, the card slot has a main body portion and an extension portion, and the extension portion extends from one side of the main body portion to outside of the light-tight box body.
As further description of the technical scheme, a light source and an optical probe are arranged on one side of the tissue oxygen sensing element to be calibrated, which faces the box body, the light source and the optical probe form a photoelectric detector, and the photoelectric detector is positioned in the main body of the clamping groove.
As a further description of the above technical solution, the box portion and the cover portion are both made of a metal material.
As a further description of the above technical solution, the reflector group has a predetermined distance from at least one side of the sealing cavity.
The utility model has the outstanding effects that:
in the simulator for calibrating the oxygen saturation of the tissue, the placement sequence of the reflecting plates and the supporting plates in the reflecting plate group is adjustable, and the filtering plates arranged between the clamping grooves and the reflecting plate group can be selected and replaced according to the actually required light transmittance, so that the simulator is more convenient to switch among different optical parameters to simulate the different absorption effects of tissues with different oxygen saturation on near infrared light, and meets the multi-point calibration requirement on the tissue oxygen sensing piece to be calibrated; the light-tight box body has a blocking effect on external light, so that the influence of external natural light on the calibrated tissue oxygen protection degree parameter value is avoided, and the accuracy of calibration operation is ensured.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a simulator for calibrating tissue oxygen saturation in accordance with the present utility model;
FIG. 2 is a schematic cross-sectional view of a simulator for calibrating tissue oxygen saturation in accordance with the present utility model;
fig. 3 is a schematic structural view of the bracket according to the present utility model.
Reference numerals illustrate:
1. a light-impermeable casing; 2. a light reflecting plate; 3. a bracket; 4. a clamping groove; 5. tissue oxygen sensing elements to be calibrated; 6. a filter plate; 7. a box part; 8. a cover portion; 9. a first step portion; 10. a second step portion.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "middle", "lower", "inner", "outer", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or component to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Hereinafter, an embodiment of the present utility model will be described in terms of its overall structure.
Referring to fig. 1 to 3, an embodiment of the present utility model discloses a simulator for calibrating oxygen saturation of tissue, which includes an opaque case 1 forming a sealed cavity, wherein,
the light-tight box body 1 is internally provided with a light reflecting plate 2 group, at least one light reflecting plate 2 and at least one bracket 3 are arranged in parallel along a first direction in the light reflecting plate 2 group, and the arrangement sequence of the light reflecting plate 2 and the bracket 3 is adjustable; the clamping groove 4 is formed by inwards sinking one surface of the light-impermeable box body 1 facing the reflecting plate 2, and the clamping groove 4 is used for fixing the tissue oxygen sensing piece 5 to be calibrated; and a replaceable filter plate 6 is arranged between the clamping groove 4 and the reflector plate 2 group.
By means of the structure, the light-impermeable box body 1 is internally provided with the light-reflecting plate 2 group, one surface of the light-impermeable box body 1 facing the square light plate group is inwards sunken to form the clamping groove 4, the replaceable light-filtering plate 6 is arranged between the clamping groove 4 and the light-impermeable box body 2 group, before the tissue oxygen induction piece 5 to be calibrated needs to be calibrated, the light-filtering plate 6 with proper light transmittance can be placed between the clamping groove 4 and the light-reflecting plate 2 group after the light-reflecting plate 2 and the bracket 3 are placed in proper sequence and relatively parallel along the first direction, and the tissue oxygen induction piece 5 to be calibrated, which is required by the same optical parameters, is placed in the clamping groove 4 to be fixed, so that the light-impermeable box body 1 is sealed one by one, and calibration work can be carried out. When the simulator in the embodiment is used for calibrating the tissue oxygen sensor 5 to be calibrated, the placement sequence of the reflecting plate 2 and the bracket 3 is adjustable, so that the distance between the reflecting plate 2 and the light filtering plate 6 can be changed, and the light filtering plate 6 can be selected and replaced according to the actually required light transmittance, thereby being more convenient for switching between different optical parameters to simulate different absorption effects of tissues with different oxygen saturation on near infrared light, meeting the multi-point calibration requirement on the tissue oxygen sensor 5 to be calibrated, and the light-impermeable box body 1 has a blocking effect on external light, avoiding the influence of external natural light on the calibrated tissue oxygen protection degree parameter value, and ensuring the calibration accuracy of the tissue oxygen sensor 5 to be calibrated.
Referring to fig. 1 and 2, in particular, in this embodiment, the light-impermeable casing 1 is rectangular and made of metal material, and includes a casing portion 7 and a cover portion 8 detachably disposed on the casing portion 7, so as to jointly form a sealed cavity for calibrating the tissue oxygen sensor 5 to be calibrated. For example, in the present embodiment, the cover 8 and the box 7 are connected in a fitting manner, however, in other embodiments, the cover 8 may be provided on the opening of the box 7 in other detachable manners, such as a rotational connection.
Referring to fig. 2, in particular, in this embodiment, the box 7 includes a bottom wall opposite to the cover 8, and a side wall connecting the cover 8 and the bottom wall, the bottom wall is used for carrying the reflector 2 set, the side wall has a first step 9 protruding inwards, and the cover 8 has a second step 10 protruding outwards; when the cover 8 covers the case 7 to seal the light-impermeable case 1, the upper end surface of the first step 9 abuts against the lower end surface of the second step 10.
Specifically, in this embodiment, the cover portion 8 and the light reflecting plate 2 are parallel to a horizontal plane, the clamping groove 4 is formed by upwardly concave lower end surfaces of the cover portion 8, and the size of the clamping groove is adapted to the tissue oxygen sensing element 5 to be calibrated, that is, the tissue oxygen sensing element 5 to be calibrated is clamped in the clamping groove 4 and is not damaged due to the clamping action, and the clamping groove 4 is not separated under the condition that the tissue oxygen sensing element 5 to be calibrated is not acted by external force.
With continued reference to fig. 2, in this embodiment, a light source and an optical probe are disposed on a side of the tissue oxygen sensor 5 facing the case, the light source and the optical probe form a photodetector, the clamping groove 4 has a main body portion with a substantially rectangular shape and an elongated extension portion, after the tissue oxygen sensor 5 is clamped in the clamping groove 4, the photodetector is located in the main body portion of the clamping groove 4, and the extension portion extending from the left side of the main body portion to the outside of the light-impermeable case 1 is used for connecting wires on the photodetector to pass through and electrically connect with an external calibration display device.
Specifically, the set of light reflecting plates 2 has a predetermined distance from at least one side of the sealed cavity, so that a sufficient operation space is ensured when the set of light reflecting plates 2 is placed in the light-impermeable box 1 and the light reflecting plates 2 and the bracket 3 in the set of light reflecting plates 2 are adjusted. As shown in fig. 2 and 3, the bracket 3 is rectangular, and the middle part of the bracket is hollowed out, so that when the reflector 2 is below the bracket 3, light emitted by the light source can pass through the bracket 3 to reach the reflector 2 after passing through the optical filter, and then is reflected to the optical probe. For example, in this embodiment, a reflector 2 is disposed on the bottom wall of the box 7, three support plates are stacked thereon, a filter 6 with a preset light transmittance is disposed above the support plates, the tissue oxygen sensor 5 to be calibrated to be the preset tissue oxygen saturation is clamped in the clamping groove 4, the cover 8 is covered for calibration, after the calibration is completed, the cover 8 is opened, and the next tissue oxygen sensor 5 to be calibrated is replaced for cyclic calibration in the clamping groove 4. After the calibration operation of the tissue oxygen sensing piece 5 to be calibrated in the same batch is finished, the stacking sequence of the reflecting plate 2 and the bracket 3 is selected and adjusted according to the requirement, and the filtering plates 6 with other light transmittance are selected to perform the same operation.
Finally, it should be noted that: the foregoing description of the preferred embodiments of the present utility model is not intended to be limiting, but rather, although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any changes, equivalents, modifications and improvements may be made without departing from the spirit and principles of the present utility model.
Claims (8)
1. A simulator for calibrating oxygen saturation of tissue is characterized by comprising a light-tight box body capable of forming a sealed cavity, wherein,
the light-proof box body is internally provided with a light reflecting plate group, at least one light reflecting plate and at least one bracket are arranged in parallel along a first direction, and the arrangement sequence of the light reflecting plate and the bracket is adjustable; the clamping groove is formed by inwards sinking one surface of the light-impermeable box body facing the reflecting plate, and is used for fixing the tissue oxygen sensing piece to be calibrated; and a replaceable filter plate is arranged between the clamping groove and the reflector plate group.
2. A simulator for calibrating tissue oxygen saturation according to claim 1 and wherein said light-impermeable casing comprises a casing portion and a cover portion, said cover portion being removably arranged on said casing portion.
3. A simulator for calibrating tissue oxygen saturation according to claim 2, wherein the cassette part comprises a bottom wall opposite the cover part, and a side wall connecting the cover part and the bottom wall, the side wall having a first step protruding inwardly, the cover part having a second step protruding outwardly; when the box body is airtight, one surface of the first step part facing the cover part abuts against one surface of the second step part facing away from the cover part.
4. The simulator for calibrating oxygen saturation level of tissue according to claim 2, wherein the cover portion is arranged in parallel with the reflector, and the clamping groove is formed by recessing a surface of the cover portion facing the reflector inward.
5. The simulator of claim 4 wherein the cartridge has a main body portion and an extension portion, the extension portion extending from one side of the main body portion to outside the opaque cassette.
6. The simulator for calibrating tissue oxygen saturation according to claim 5, wherein a light source and an optical probe are arranged on one side of the tissue oxygen sensor to be calibrated, which faces the box body, the light source and the optical probe form a photoelectric detector, and the photoelectric detector is located in the main body of the clamping groove.
7. The simulator of claim 2, wherein the cassette and cover are each made of a metallic material.
8. The simulator for calibrating oxygen saturation of tissue according to claim 1, wherein the reflector group is at least a predetermined distance from one side of the sealed cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321006125.6U CN220289401U (en) | 2023-04-28 | 2023-04-28 | Simulator for calibrating oxygen saturation of tissue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321006125.6U CN220289401U (en) | 2023-04-28 | 2023-04-28 | Simulator for calibrating oxygen saturation of tissue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220289401U true CN220289401U (en) | 2024-01-02 |
Family
ID=89337209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321006125.6U Active CN220289401U (en) | 2023-04-28 | 2023-04-28 | Simulator for calibrating oxygen saturation of tissue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220289401U (en) |
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2023
- 2023-04-28 CN CN202321006125.6U patent/CN220289401U/en active Active
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