CN104368062A - Grooved optical level sensor for intravenous injection - Google Patents
Grooved optical level sensor for intravenous injection Download PDFInfo
- Publication number
- CN104368062A CN104368062A CN201310349081.1A CN201310349081A CN104368062A CN 104368062 A CN104368062 A CN 104368062A CN 201310349081 A CN201310349081 A CN 201310349081A CN 104368062 A CN104368062 A CN 104368062A
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- CN
- China
- Prior art keywords
- light
- aperture
- sensitive element
- intravenous injection
- liquid level
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16804—Flow controllers
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A grooved optical level sensor for intravenous injection comprises a base, a light-emitting element, a photosensitive element and a liquid capsule (also serving as a drop speed observation capsule). The base is provided with a cylindrical groove, with the cross section being in the shape of a more than half circle. Two sides of the cylindrical groove are provided with two pores, respectively; axes of the pores are collinear; the axes and the axis of the cylindrical groove intersect at an included angle which is an acute angle. The light-emitting element and the photosensitive element are provided behind the pores respectively. Light from the light-emitting element pass the pores in air and can be received by the photosensitive element. The photosensitive element side of the cylindrical groove is further provided with a pore, another photosensitive element is provided behind the pore. The axes of two pores on the same side are parallel to each other. The two photosensitive elements have same parameters and are mounted in the same direction. The middle of the liquid capsule is a transparent cylindrical plastic capsule; the lower portion of the liquid capsule is provided with a circular protrusion facing outward. The grooved optical level sensor for intravenous injection has the advantages of simple structure, convenience in use and operation, accurateness and effectiveness in detection and high reliability.
Description
Technical field
The present invention relates to a kind of liquid level sensor, especially a kind of Optical Liquid Level Sensors used for intravenous injection.
Background technology
When intravenous injection, if fluid drip is over and does not extract syringe needle, air will be had to enter vein, likely cause life danger.So during intravenous injection, patient or families of patients will monitor whether injection drips off the moment, make patient or families of patients psychentonia, dog-tired.
Also do not find, for intravenous liquid level sensor product, only to meet the design document of this respect at present.But the problem such as all have that complex structure, reliability are low, poor operability, use are inconvenient, so that do not form product.
Summary of the invention
The object of the invention is, in order to overcome defect in prior art, to provide the Optical Liquid Level Sensors used for intravenous injection that a kind of structure is simple, reliability is high, workable, easy to use.
The present invention solves the technical scheme that its technical problem takes: flute profile Optical Liquid Level Sensors used for intravenous injection, is made up of pedestal, light-emitting component, light-sensitive element and reservoir (hold concurrently drip speed observe a capsule).Pedestal has a cylinder shape groove, and its cross section is large semicircle.Respectively have an aperture in the both sides of groove, point-blank, the axes intersect of its axis and groove, its angle is acute angle to the axis of two apertures, and representative value is 45 degree.Below place light-emitting component and light-sensitive element respectively at two apertures, the light that light-emitting component sends in atmosphere by two apertures receive by light-sensitive element.Open an aperture again in the give out light side of photosensitive elements of groove, and placing a light-sensitive element thereafter, the axis of two apertures of homonymy is parallel to each other, and the parameters of two light-sensitive elements is identical, and settles direction consistent.The middle part of reservoir is transparent cylindrical plastic capsule, and there is an outside annular protrusion its underpart.
The present invention have structure simple, use easy to operate, detect accurate and effective, advantage that reliability is high.
Accompanying drawing explanation
Fig. 1 is structure chart of the present invention.
Fig. 2 is front view and the top view of pedestal.
Fig. 3 is that injection liquid level is higher than index path during light-emitting component.
Fig. 4 be injection liquid level between light-emitting component and light-sensitive element time index path.
Fig. 5 is that injection liquid level is lower than index path during light-sensitive element.
In figure, 1, reservoir (hold concurrently drip speed observe a capsule);
2, pedestal;
3, light-emitting component;
4, aperture;
5, aperture;
6, light-sensitive element;
7, aperture;
8, light-sensitive element;
9, annular protrusion;
10, the angle of aperture axis and recess axis;
11, groove;
12, groove cross section.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As depicted in figs. 1 and 2, flute profile Optical Liquid Level Sensors used for intravenous injection is made up of pedestal (2), light-emitting component (3), light-sensitive element (6), light-sensitive element (8) and reservoir (hold concurrently and drip speed observation capsule) (1), pedestal (2) has a cylinder shape groove (11), and its cross section (12) is large semicircle.An aperture (4) is had in the side of groove (11), opposite side has aperture (7) and aperture (5), in the placement one light-emitting component (3) below of aperture (4), light-sensitive element (8) and light-sensitive element (6) is placed respectively below at aperture (7) and aperture (5), the axis of aperture (4) and aperture (7) point-blank, the axes intersect of its axis and groove (11), its angle (10) is acute angle, and representative value is 45 degree.The light that light-emitting component (3) sends in atmosphere by aperture (4) and aperture (7) receive by light-sensitive element (8).The axis of aperture (5) and the axis being parallel of aperture (7), light-sensitive element (6) is identical with the parameters of light-sensitive element (8), and settles direction consistent.The middle part of reservoir (1) is transparent cylindrical plastic capsule, and there is an outside annular protrusion (7) its underpart.
Its operation principle is:
If injection is transparency liquid, when injection liquid level is higher than light-emitting component (3), its light path as shown in Figure 3, the light that light-emitting component (3) sends is in aperture (4) and reservoir (1) contact position, be that normal reflects (because reservoir (1) is very thin with the vertical line of reservoir (1) bus, its refraction action can be ignored), the light that light-emitting component (3) sends can not receive by light-sensitive element (8), the state when output of light-sensitive element (8) is half-light; When injection liquid level lower than light-emitting component (3), higher than light-sensitive element (8) time, its light path as shown in Figure 4, the vertical line that the light that light-emitting component (3) sends sentences liquid level at liquid level is that normal reflects, the light that light-emitting component (3) sends can not receive by light-sensitive element (8), the state when output of light-sensitive element (8) is also half-light; When injection liquid level is lower than light-sensitive element (8), its light path as shown in Figure 5, the light that light-emitting component (3) sends is by aperture (4) and aperture (7), receive by light-sensitive element (8), the state when output of light-sensitive element (8) is light.
If injection is nontransparent liquid, when injection liquid level is higher than light-sensitive element (8), the light that light-emitting component (3) sends is injected liquid and blocks, can not receive by light-sensitive element (8), the state when output of light-sensitive element (8) is half-light; When injection liquid level is lower than light-sensitive element (8), the light that light-emitting component (3) sends is by aperture (4) and aperture (7), receive by light-sensitive element (8), the state when output of light-sensitive element (8) is light.
Like this, the position of injection liquid level just can be detected by the output state detecting light-sensitive element (8).
Due to the axis of aperture (5) and the axis being parallel of aperture (7), light-sensitive element (6) is identical with the parameters of light-sensitive element (8), and settle direction consistent, so, when light-sensitive element (8) does not receive the light that light-emitting component (3) sends, light-sensitive element (6) is identical with the output parameter of light-sensitive element (8).Light-sensitive element (6) is introduced comparison circuit as with reference to value, environment can be reduced on impact of the present invention, improve reliability.
During use, only reservoir (1) need be put into groove (11).Because the cross section (12) of groove (11) is large semicircle, as shown in Figure 2, so be easy to reservoir (1) is put into groove (11) and blocks, difficult drop-off in the absence of external forces.One outside annular protrusion (9) is arranged at the bottom due to reservoir (1), so pedestal (2) not easily landing downwards.
Claims (6)
1. a flute profile Optical Liquid Level Sensors used for intravenous injection, by pedestal (2), light-emitting component (3), light-sensitive element (6), light-sensitive element (8) and reservoir (hold concurrently and drip speed observation capsule) (1) composition, it is characterized in that: pedestal (2) has a cylinder shape groove (11), its cross section (12) is large semicircle, an aperture (4) is had in the side of groove (11), the opposite side of groove (11) has an aperture (7) and aperture (5), in the placement one light-emitting component (3) below of aperture (4), light-sensitive element (8) and light-sensitive element (6) is placed respectively below at aperture (7) and aperture (5).
2. Optical Liquid Level Sensors used for intravenous injection according to claim 1, it is characterized in that: the axis of described aperture (4) and aperture (7) point-blank, the axes intersect of this axis and groove (11), its angle (10) is acute angle.
3. Optical Liquid Level Sensors used for intravenous injection according to claim 1 and claim 2, is characterized in that: the angle of the axis of described aperture (4) and aperture (7) and the axis of groove (11) is 45 degree.
4. Optical Liquid Level Sensors used for intravenous injection according to claim 1, is characterized in that: the axis of aperture (5) and the axis being parallel of aperture (7), light-sensitive element (6) and light-sensitive element (8) parameters identical, and settle direction consistent.
5. Optical Liquid Level Sensors used for intravenous injection according to claim 1, is characterized in that: the light that the light-emitting component (3) of placement sends in atmosphere by aperture (4) and aperture (7) receive by light-sensitive element (8).
6. Optical Liquid Level Sensors used for intravenous injection according to claim 1, is characterized in that: the middle part of described reservoir (hold concurrently drip speed observe a capsule) (1) is transparent cylindrical plastic capsule, and there is an outside annular protrusion (9) its underpart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310349081.1A CN104368062A (en) | 2013-08-13 | 2013-08-13 | Grooved optical level sensor for intravenous injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310349081.1A CN104368062A (en) | 2013-08-13 | 2013-08-13 | Grooved optical level sensor for intravenous injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104368062A true CN104368062A (en) | 2015-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310349081.1A Pending CN104368062A (en) | 2013-08-13 | 2013-08-13 | Grooved optical level sensor for intravenous injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104368062A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106362234A (en) * | 2016-08-26 | 2017-02-01 | 季兵 | Intravenous infusion management device and intravenous infusion management system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992017227A2 (en) * | 1991-04-01 | 1992-10-15 | Sherwood Medical Company | Drop detection method and apparatus |
| CN1224363A (en) * | 1996-07-01 | 1999-07-28 | 法玛西雅和厄普约翰公司 | Delivery device and method for its operation |
| CN2579435Y (en) * | 2002-10-18 | 2003-10-15 | 罗炯 | Infrared transfusion monitor alarm |
| CN1628871A (en) * | 2003-12-19 | 2005-06-22 | 蔡冠辉 | infrared absorption type oxygen inhaling efficiency increasing device |
| CN202069946U (en) * | 2011-01-19 | 2011-12-14 | 南京信息工程大学 | Optical induction based transfusion liquid level detection system |
| CN202740533U (en) * | 2012-08-27 | 2013-02-20 | 黑龙江大学 | Monitoring device and monitoring network system for venous infusion |
| CN104225720A (en) * | 2014-10-14 | 2014-12-24 | 于好雨 | Automatic infusion ending reminding device |
-
2013
- 2013-08-13 CN CN201310349081.1A patent/CN104368062A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1992017227A2 (en) * | 1991-04-01 | 1992-10-15 | Sherwood Medical Company | Drop detection method and apparatus |
| CN1224363A (en) * | 1996-07-01 | 1999-07-28 | 法玛西雅和厄普约翰公司 | Delivery device and method for its operation |
| CN2579435Y (en) * | 2002-10-18 | 2003-10-15 | 罗炯 | Infrared transfusion monitor alarm |
| CN1628871A (en) * | 2003-12-19 | 2005-06-22 | 蔡冠辉 | infrared absorption type oxygen inhaling efficiency increasing device |
| CN202069946U (en) * | 2011-01-19 | 2011-12-14 | 南京信息工程大学 | Optical induction based transfusion liquid level detection system |
| CN202740533U (en) * | 2012-08-27 | 2013-02-20 | 黑龙江大学 | Monitoring device and monitoring network system for venous infusion |
| CN104225720A (en) * | 2014-10-14 | 2014-12-24 | 于好雨 | Automatic infusion ending reminding device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106362234A (en) * | 2016-08-26 | 2017-02-01 | 季兵 | Intravenous infusion management device and intravenous infusion management system |
| CN106362234B (en) * | 2016-08-26 | 2019-11-12 | 季兵 | Venous transfusion manages device and venous transfusion manages system |
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Application publication date: 20150225 |