CN217311427U - Infusion monitoring device - Google Patents
Infusion monitoring device Download PDFInfo
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- CN217311427U CN217311427U CN202220791841.9U CN202220791841U CN217311427U CN 217311427 U CN217311427 U CN 217311427U CN 202220791841 U CN202220791841 U CN 202220791841U CN 217311427 U CN217311427 U CN 217311427U
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- cylindrical lens
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- light source
- drip cup
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Abstract
The utility model provides a transfusion monitoring device, which comprises a shell, a light source, two cylindrical lenses, a photocell receiver, a counting signal processing circuit and a power supply, wherein the light source, the two cylindrical lenses, the photocell receiver, the counting signal processing circuit and the power supply are respectively fixed on the shell; the light source is positioned at one side of the drip cup and used for emitting light beams which are used for monitoring the dropping liquid in the drip cup; the two cylindrical lenses are positioned between the light source and the drip cup and used for changing the shape of the light beam, expanding the light beam with a round light spot shape and then compressing the light beam into a line light beam; the photocell receiver is positioned at the other side of the drip cup and is used for receiving the line beam passing through the drip cup and converting the line beam into an electric signal; the counting signal processing circuit is connected with the photocell receiver and used for calculating the dropping speed of the dropping liquid according to the intensity change frequency of the electric signal; and the power supply is used for supplying power to the light source and the counting signal processing circuit. The utility model discloses a cylindrical mirror that two orthogonals were arranged compresses the facula for circular shape light beam into line beam to the increase is to the monitoring range of dropping liquid, realizes that the dropping liquid to dripping in the kettle of dripping that does not have the dead angle keeps watch on.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to infusion monitoring device.
Background
In medical intravenous injection, different dripping speeds are often needed for different diseases, and if the dripping speed is too high, not only infusion patients cannot be cured in time, but also other symptoms can be possibly caused. Therefore, the infusion monitoring device needs to accurately monitor the dropping speed of the dropping liquid. At present, the infusion monitoring device is to be perfected in the aspect of monitoring accuracy.
The utility model discloses a utility model patent of publication No. CN212973764U, it discloses an infusion dropping liquid monitoring device, utilizes the dropping liquid counting assembly of LED light source, reflection tile, lens and photoelectric receiver formation light path, what this kind of light path form utilized is that light signal shields the principle, meets and rocks the condition, and the dropping liquid can take place to deviate, causes the control dead angle, and the count will be inaccurate, causes the wrong report.
The utility model discloses a utility model patent of publication No. CN210494779U, it discloses an infusion dropping liquid monitoring device, utilizes the reflector reflection light signal, but easily arouses the wrong report that causes because of multiple reflection.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's defect, providing an infusion monitoring device, the cylindrical mirror through two quadrature arrangements compresses the facula for the circular shape light beam into line beam to the increase is to the control range of dropping liquid, avoids appearing the control blind area.
In order to achieve the above purpose, the utility model adopts the following specific technical scheme:
the utility model provides an infusion monitoring device, include: the shell is clamped and fixed on the drip cup; the LED light source is fixed on the shell and positioned on one side of the drip cup, and is used for emitting light beams which are used for monitoring the dropping liquid in the drip cup; the vertically arranged cylindrical lens is fixed on the shell and positioned between the LED light source and the drip cup, and is used for increasing the divergence degree of the light beam along the direction of the sagittal and changing the shape of the light spot of the light beam from circular to elliptical; the transverse cylindrical lens is fixed on the shell and positioned between the vertical cylindrical lens and the drip cup, and is used for compressing the light beam with elliptic light spots in the meridian direction to form a line light beam covering the diameter of the drip cup; the photocell receiver is fixed on the shell and positioned on the other side of the drip cup and used for receiving the line beam passing through the drip cup and converting the line beam into an electric signal; the counting signal processing circuit is fixed on the shell and connected with the photocell receiver and used for calculating the dropping speed of the dropping liquid according to the intensity change frequency of the electric signal; and the power supply is fixed on the shell and used for supplying power to the LED light source.
Preferably, the vertically-arranged cylindrical lenses are plano-concave cylindrical lenses, and the horizontally-arranged cylindrical lenses are plano-convex cylindrical lenses.
Preferably, the plane of the plano-concave cylindrical lens faces the LED light source and is vertically arranged, and the convex surface of the plano-convex cylindrical lens faces the concave surface of the plano-concave cylindrical lens and is transversely arranged;
preferably, the concave surface of the plano-concave cylindrical lens faces the LED light source, and the convex surface of the plano-convex cylindrical lens faces the plane of the plano-concave cylindrical lens.
Preferably, the plane of the plano-concave cylindrical lens faces the LED light source, and the convex surface of the plano-convex cylindrical lens faces the concave surface of the plano-concave cylindrical lens.
Preferably, the concave surface of the plano-concave cylindrical lens faces the LED light source, and the plane of the plano-convex cylindrical lens faces the plane of the plano-concave cylindrical lens.
Preferably, the power supply is a battery or a dry cell.
Preferably, the LED light source is an infrared LED.
Compared with the prior art, the utility model discloses can gain following technological effect:
1. the light beam with the circular light spot is compressed into a line beam through the two cylindrical mirrors which are arranged orthogonally, the line beam can enlarge the monitoring range of the dropping liquid, the dropping liquid dropping in the dropping kettle can be monitored without dead angles, and a monitoring blind area does not exist;
2. the utility model discloses a light signal's intensity variation calculates the dripping speed of dropping liquid, compares light signal's multiple reflection mode, can reduce the misstatement rate.
Drawings
Fig. 1 is a schematic structural diagram of an infusion monitoring device according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a counting signal processing circuit according to an embodiment of the present invention;
fig. 3 is a schematic optical path diagram of the vertically-arranged cylindrical lens and the horizontally-arranged cylindrical lens according to an embodiment of the present invention.
Wherein the reference numerals include: the device comprises an LED light source 1, a vertically-arranged cylindrical lens 2, a horizontally-arranged cylindrical lens 3, a photocell receiver 4, a counting signal processing circuit 5, a power supply 6, a shell 7 and a drip cup 8.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the same reference numerals are used for the same blocks. In the case of the same reference numerals, their names and functions are also the same. Therefore, detailed description thereof will not be repeated.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not constitute limitations on the invention.
Fig. 1 shows a structure of an infusion monitoring device according to an embodiment of the present invention.
As shown in fig. 1, the infusion monitoring device provided by the embodiment of the utility model comprises an LED light source 1, a vertical cylindrical lens 2, a horizontal cylindrical lens 3, a photocell receiver 4, a counting signal processing circuit 5, a power supply 6 and a shell 7, wherein the shell 7 is clamped and fixed on a drip cup 8, and the LED light source 1, the vertical cylindrical lens 2, the horizontal cylindrical lens 3, the photocell receiver 4, the counting signal processing circuit 5 and the power supply 6 are respectively fixed on the shell 7.
The LED light source 1 is positioned on one side of the drip cup 8 and used for emitting light beams with round light spot shapes, and the light beams are used for monitoring dropping liquid in the drip cup 8.
In an example of the present invention, the LED light source 1 is an infrared LED, since visible light is easily interfered by external signals, and infrared light is not easily interfered by external signals, so that the infrared LED is adopted as the LED light source 1.
The vertically-arranged cylindrical lens 2 and the horizontally-arranged cylindrical lens 3 are arranged in an orthogonal mode and located on the same side of the LED light source 1 and located between the LED light source 1 and the drip cup 8, the vertically-arranged cylindrical lens 2 is closer to the LED light source 1 than the horizontally-arranged cylindrical lens 3, the vertically-arranged cylindrical lens 2 and the horizontally-arranged cylindrical lens 3 are used for changing the shape of a light beam, the light beam with a circular light spot shape is expanded and then compressed into a linear light beam, namely the light beam is emitted in one of two orthogonal directions through the matching of the vertically-arranged cylindrical lens 2 and the horizontally-arranged cylindrical lens 3 and is compressed in the other of the two orthogonal directions, so that the circular light beam is shaped into the linear light beam, the width of the linear light beam is larger than the diameter of the drip cup 8, and the linear light beam penetrates through the drip cup 8 and can monitor liquid drops in the drip cup 8 without dead angles.
The photocell receiver 4 is positioned on the other side of the drip chamber 8 opposite to the position of the LED light source 1, and is used for receiving the line beam passing through the drip chamber 8 and converting the line beam into an electric signal. When the dropping liquid in drip cup 8 does not shelter from the line beam, the intensity that photocell receiver 4 received light signal can not receive the interference, and when the dropping liquid sheltered from the light beam, the intensity of the light signal that photocell receiver 4 received can be weakened because of sheltered from by the dropping liquid, and when the dropping liquid was constantly dripped, photocell receiver 4 can receive one and strong one and weak become the light signal of rule change, the intensity change of final conversion current signal.
The photocell receiver 4 is a conventional one, for example, a model 2cu100, so the specific structure of the photocell receiver 4 is not described in detail in the present invention.
The counting signal processing circuit 5 is connected with the photocell receiver 4 and used for calculating the dropping speed of the dropping liquid according to the frequency of the reduction of the current signal.
The counting signal processing circuit 5 is a conventional circuit, and its classical circuit structure is shown in fig. 2, so the counting signal processing circuit 5 is not described in the present invention.
The power supply 6 is used for supplying power to the LED light source 1.
Fig. 3 is a light path of the vertically-arranged cylindrical lens and the horizontally-arranged cylindrical lens according to the embodiment of the present invention.
As shown in fig. 3, the vertically arranged cylindrical lens 2 is actually a plano-concave cylindrical lens, the plane of the plano-concave cylindrical lens faces the LED light source 1 and is vertically arranged, and the plano-concave cylindrical lens functions to increase the divergence degree of the light beam in the sagittal direction, and the divergence degree of the light beam in the meridional direction is not changed due to the optical characteristics of the plano-concave cylindrical lens. In conjunction with the coordinate system in fig. 3, the plano-concave cylindrical lens is used to increase the divergence of the light beam in the Y-axis direction and keep the divergence in the X-axis direction constant, thereby widening the spot shape of the light beam from a circular shape to an elliptical shape.
The transverse cylindrical lens 3 is actually a plano-convex cylindrical lens, the convex surface of the plano-convex cylindrical lens faces the concave surface of the vertical cylindrical lens 2 and is transversely arranged, and due to the optical characteristics of the plano-convex cylindrical lens, the plano-convex cylindrical lens only compresses the light beam which is shaped into an ellipse in the meridian direction, but does not change the sagittal direction of the divergence degree which is enlarged before. In combination with the coordinate system in fig. 3, the plano-convex cylindrical lens compresses the elliptical beam only in the X-axis direction, but not in the Y-axis direction, so as to compress the elliptical beam into a linear beam.
In some examples of the present invention, the placing of the plano-convex cylindrical lens and the plano-concave cylindrical lens can adopt the following three modes:
1. the concave surface of the plano-concave cylindrical lens faces the LED light source 1, and the convex surface of the plano-convex cylindrical lens faces the plane of the plano-concave cylindrical lens;
2. the plane of the plano-concave cylindrical lens faces the LED light source 1, and the convex surface of the plano-convex cylindrical lens faces the concave surface of the plano-concave cylindrical lens;
3. the concave surface of the plano-concave cylindrical lens faces the LED light source 1, and the plane of the plano-convex cylindrical lens faces the plane of the plano-concave cylindrical lens.
The three placing modes can also widen and compress the light beam into a line light beam to enlarge the monitoring range of the dropping liquid, but the effect is not as narrow as that of the placing mode shown in fig. 3, and the line light beam is not uniform enough.
Referring to fig. 1, the x axis is a light beam propagation direction, the y axis is a length direction of the drip cup 8, the z axis is a plane perpendicular to the x axis and the y axis, a divergence direction of the vertically arranged cylindrical lens 2 to the light beam is an xz plane, and a compression direction of the horizontally arranged cylindrical lens 3 to the light beam is an xy plane.
In a specific example of the present invention, the optical parameters of the plano-concave cylindrical lens and the plano-convex cylindrical lens are as follows:
to the circular light beam before not the plastic, when dripping 8 takes place to rock and leads to the dropping liquid to deviate from original orbit, circular light beam probably can not sheltered from by the dropping liquid, and consequently the interference degree that photoelectric cell receiver 4 received the optical signal and received is less, can not cover the whole region of dripping 8 moreover, leads to photoelectric cell receiver 4 received the optical signal can't become one strong one weak law change, and count signal processing circuit 5 is difficult to calculate the dropping speed of dropping liquid from the reduction frequency of optical signal intensity. But the line beam after the plastic is then different, and the circular light beam of line beam comparison can increase the scope of control dropping liquid, even if the drip cup 8 takes place to rock, the liquid drop also can cover the line beam, and the light signal that photocell receiver 4 received can weaken to guarantee that count signal processing circuit 5 can calculate the dropping speed of dropping liquid according to the reducing frequency of light signal intensity, improve the rate of accuracy.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
The above detailed description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. An infusion monitoring device, comprising:
the shell is clamped and fixed on the drip cup;
the LED light source is fixed on the shell and positioned on one side of the drip cup, and is used for emitting light beams which are used for monitoring liquid drops in the drip cup;
the vertical cylindrical lens is fixed on the shell and positioned between the LED light source and the drip cup, and is used for increasing the divergence degree of the light beam along the direction of the sagittal and changing the shape of the light spot of the light beam from a circle to an ellipse;
the transverse cylindrical lens is fixed on the shell and positioned between the vertical cylindrical lens and the drip cup, the transverse cylindrical lens and the vertical cylindrical lens are arranged in an orthogonal mode, and the transverse cylindrical lens is used for compressing light beams with elliptic light spots in the meridian direction to form a line light beam covering the diameter of the drip cup;
the photocell receiver is fixed on the shell and positioned on the other side of the drip cup and used for receiving a line beam passing through the drip cup and converting the line beam into an electric signal;
the counting signal processing circuit is fixed on the shell and connected with the photocell receiver, and is used for calculating the dropping speed of dropping liquid according to the intensity change frequency of the electric signal;
and the power supply is fixed on the shell and used for supplying power to the LED light source and the counting signal processing circuit.
2. The infusion monitoring device of claim 1, wherein said vertically disposed cylindrical lens is a plano-concave cylindrical lens and said laterally disposed cylindrical lens is a plano-convex cylindrical lens.
3. The infusion monitoring device according to claim 2, wherein a planar surface of the plano-concave cylindrical lens faces the LED light source and is arranged vertically, and a convex surface of the plano-convex cylindrical lens faces a concave surface of the plano-concave cylindrical lens and is arranged laterally.
4. The infusion monitoring device of claim 2, wherein a concave surface of said plano-concave cylindrical lens faces said LED light source and a convex surface of said plano-convex cylindrical lens faces a planar surface of said plano-concave cylindrical lens.
5. The infusion monitoring device of claim 2, wherein a planar surface of said plano-concave cylindrical lens faces said LED light source and a convex surface of said plano-convex cylindrical lens faces a concave surface of said plano-concave cylindrical lens.
6. The infusion monitoring device of claim 2, wherein the concave surface of said plano-concave cylindrical lens faces said LED light source and the planar surface of said plano-convex cylindrical lens faces the planar surface of said plano-concave cylindrical lens.
7. The infusion monitoring device according to any one of claims 1 to 6, wherein the LED light source is an infrared LED.
8. The infusion monitoring device according to claim 7, wherein said power supply is a battery or dry cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220791841.9U CN217311427U (en) | 2022-04-07 | 2022-04-07 | Infusion monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220791841.9U CN217311427U (en) | 2022-04-07 | 2022-04-07 | Infusion monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217311427U true CN217311427U (en) | 2022-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220791841.9U Active CN217311427U (en) | 2022-04-07 | 2022-04-07 | Infusion monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217311427U (en) |
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2022
- 2022-04-07 CN CN202220791841.9U patent/CN217311427U/en active Active
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