CN105944183A - Capacitance type infusion sensor - Google Patents
Capacitance type infusion sensor Download PDFInfo
- Publication number
- CN105944183A CN105944183A CN201610465562.2A CN201610465562A CN105944183A CN 105944183 A CN105944183 A CN 105944183A CN 201610465562 A CN201610465562 A CN 201610465562A CN 105944183 A CN105944183 A CN 105944183A
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- CN
- China
- Prior art keywords
- transfusion
- capacitor plate
- sensor
- tube
- capacitance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
- A61M5/1684—Monitoring, detecting, signalling or eliminating infusion flow anomalies by detecting the amount of infusate remaining, e.g. signalling end of infusion
-
- 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
- A61M5/16886—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 for measuring fluid flow rate, i.e. flowmeters
- A61M5/1689—Drip counters
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
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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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a capacitance type infusion sensor which comprises a capacitance plate pair I arranged on the upper portion of an infusion tube and a capacitance plate pair II arranged on the lower portion of the infusion tube. The capacitance plate pair I and/or the capacitance plate pair II comprise(s) two oppositely arranged capacitance plates, each capacitance plate is in an arc shape to adhere to the outer side wall of the infusion tube, and the ends of the two oppositely arranged capacitance plates are not in contact with each other. The capacitance type infusion sensor is installed on the infusion tube, and the measurement process is not subjected to the influence of the gradient of the infusion tube. The capacitance type infusion sensor is high in sensitiveness, and the infusion progress and infusion balance can be detected accurately simultaneously. Moreover, a capacitive sensing principle is utilized, and the power is low. Finally, the capacitance type infusion sensor has no radiation energy and does not have a negative effect on medicine liquids.
Description
Technical field
The present invention relates to a kind of condenser type transfusion sensor, belong to technical field of medical equipment.
Background technology
When patient is at hospital transfusion, it usually needs nurse or household's nurse.When liquid is totally lost, if unmanned nurse,
Blood back can be caused to bring the biggest trouble the most dangerous to patient.Transfusion sensor is the weight of intravenous injection monitoring induction system
Want ingredient, detect patient infusion progress by this sensor, it is achieved the sensing in real time of infusion process and monitoring, electricity consumption
Sonization signal is in nurse station terminal demonstration transfusion progress and infusion alarming information.According to this information, in infusion process, prison
Survey the speed injection that medicine specifies according to doctor's advice, it is ensured that use safety and using effect；And at the end of transfusion, send report
Alert, prompting ward pulls out tube for transfusion, reduces patient and the burden of family members.
Existing transfusion sensor has the sensor utilizing gravity measurement principle, and such sensor sensitivity is poor, it is impossible to right
Surplus and transfusion process do more accurate measurement.Simple judgment infusion process can only be carried out according to default empty bottle/sky bag weight
Whether close to terminating.Also utilize the sensor of photoelectric measurement, such sensor is clipped on transfusion sighting tube, utilizes liquid
Drip the foundation as count measurement of the disturbance to photosignal, a medicinal liquid injection volume can be calculated according to dripping speed.When unglazed
Judge during change in electric that transfusion end sends warning.The limitation of the program is that requirement is when infusing sighting tube relative to ground not
It may happen that wrong report time vertical, for the strict meaning, sensitive medicaments may be impacted by the energy of incident ray in addition.
Therefore a Species sensitivity is high, can have very much the exploitation of the transfusion sensor that transfusion process and transfusion surplus do accurate judgement must
Want.
Summary of the invention
Goal of the invention: the technical problem to be solved is to provide a kind of condenser type transfusion sensor, this transfusion senses
Device sensitivity is high, transfusion process and transfusion surplus can be done accurately judgement, and is not affected by tube for transfusion gradient.
For reaching above-mentioned technical purpose, the technical solution adopted in the present invention is:
A kind of condenser type transfusion sensor, and is arranged under tube for transfusion I including the capacitor plate being arranged on tube for transfusion top
The capacitor plate in portion is to II, and described capacitor plate includes two pieces of capacitor plates being oppositely arranged to I and/or capacitor plate to II,
Every piece of described capacitor plate is that circular arc is attached on the lateral wall of tube for transfusion, the end of described two pieces of capacitor plates being oppositely arranged
Portion does not contacts.
Further preferably, every piece of described capacitor plate is that circular arc is stuck on tube for transfusion.
Further preferably, every piece of described capacitor plate is foil.
Wherein, II is connected by described capacitor plate by I and capacitor plate with extraneous capacitive detection circuit.
Wherein, distance is tube for transfusion diameter 1/12～1/10 between the end of described two pieces of capacitor plates being oppositely arranged.
Compared with prior art, condenser type transfusion sensor of the present invention has the beneficial effect that
First, condenser type transfusion sensor of the present invention is arranged on tube for transfusion, and measurement process is not affected by tube for transfusion gradient；
Secondly, condenser type transfusion sensor sensitivity of the present invention is high, transfusion process and transfusion surplus can be done accurately inspection simultaneously
Survey；
Again, condenser type transfusion sensor of the present invention utilizes capacitance induction principle, low in energy consumption；
Finally, the radiationless energy of condenser type transfusion sensor of the present invention, medicinal liquid is not had a negative impact.
Accompanying drawing explanation
Fig. 1 is the use state diagram of condenser type transfusion sensor of the present invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the systematic schematic diagram of condenser type transfusion sensor of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings, technical solution of the present invention is further described.
As shown in Fig. 1～2, condenser type transfusion sensor of the present invention, including the capacitor plate pair being arranged on tube for transfusion 1 top
I2 and the capacitor plate being arranged on tube for transfusion bottom include two piece to I2 and/or capacitor plate to II3 to II3, capacitor plate
The capacitor plate 4 being oppositely arranged, every piece of capacitor plate 4 is attached in circular arc on the lateral wall of tube for transfusion 1, capacitor plate
II3 can be clipped on tube for transfusion 1 by I2 and/or capacitor plate by clip, thus convenient dismounting, every piece of capacitor plate 4
Also can be stuck on tube for transfusion 1 by self radian in circular arc, every piece of capacitor plate 4 is foil, and two pieces set relatively
The end of the capacitor plate 4 put does not contacts.
As it is shown on figure 3, the capacitor plate of condenser type transfusion sensor of the present invention is electric with the external world to II3 to I2 and capacitor plate
Holding testing circuit to connect, capacitive detection circuit includes signal conditioning circuit and A/D Acquisition Circuit, and capacitive detection circuit is with micro-
Processor connects, and microprocessor connects display alarm interface.Condenser type transfusion sensor of the present invention uses exchange detection simultaneously
(dripping speed) and DC detecting (liquid level/warning).
Condenser type transfusion sensor system of the present invention is configured with double capacitor plate pair, and the capacitor plate I2 on top is used for detecting
Drips also counts, and then detection transfusion process, measures and drips speed；The capacitor plate of bottom to II3 transfusion at the end of,
In tube for transfusion 1, liquid level has a bigger capacitance variations when beginning to decline, Use of Emergency Alarm (and prevent from counting inaccurate or
Primary quantity input is inaccurate).
As the height h=1cm of condenser type transfusion sensor capacitor plate 4 of the present invention, tube for transfusion 1 caliber d=2cm, then electricity
Holding pole plate to I2 and/or capacitor plate to the capacitance of II3 is:
Wherein, E0For permittivity of vacuum, Er is relative dielectric constant, and d is between two pieces of capacitor plates being oppositely arranged
Distance, the relative dielectric constant of air approximates 1 close to vacuum values, and glass dielectric constant is 3.7, and the dielectric of water is normal
Number is 80.
The electric capacity C1 of top capacitor plate I2 is when tube for transfusion 1 dripless falls, it is considered to the glass wall of tube for transfusion 1 test tube,
Its relative dielectric constant is E [A1 air+A2 glass], and when there being drop to fall, its relative dielectric constant is changed to E [A1
Air+A2 glass+A3 drop], wherein A1, A2, A3 are component coefficient, owing to drop causes relative dielectric constant
Change, cause the capacitance C1 of capacitor plate I2 to change, thus can detect that drop drip speed.
Bottom capacitor plate keeps constant to the electric capacity C2 of II3 during transfusion is carried out, when transfusion terminates liquid level decline
Great changes will take place in meeting, would fall to 1/80 (relative dielectric constant drops to 1 from 80) of quiescent value, and this signal will
Being used for reporting to the police, prompting transfusion is over needing to process at once.
Condenser type transfusion sensor of the present invention uses measurement by capacitance, and signal readout process circuit is ripe, and robustness is high,
Low in energy consumption, be susceptible to interference.
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any technology being familiar with this specialty
Personnel, in the range of without departing from technical solution of the present invention, when the technology contents of available the disclosure above make a little change or
It is modified to the Equivalent embodiments of equivalent variations, as long as being the content without departing from technical solution of the present invention, according to the skill of the present invention
Any simple modification, equivalent variations and the modification that above example is made by art essence, all still falls within the technology of the present invention side
In the range of case.
Claims (5)
1. a condenser type transfusion sensor, it is characterised in that: include that the capacitor plate being arranged on tube for transfusion top is to I
Be arranged on the capacitor plate of tube for transfusion bottom to II, described capacitor plate includes two pieces of phases to I and/or capacitor plate to II
To the capacitor plate arranged, every piece of described capacitor plate is that circular arc is attached on the lateral wall of tube for transfusion, described two pieces relatively
The end of the capacitor plate arranged does not contacts.
Condenser type transfusion sensor the most according to claim 1, it is characterised in that: every piece of described capacitor plate in
Circular arc is stuck on tube for transfusion.
Condenser type transfusion sensor the most according to claim 1, it is characterised in that: every piece of described capacitor plate is
Foil.
Condenser type transfusion sensor the most according to claim 1, it is characterised in that: described capacitor plate to I and
II is connected by capacitor plate with extraneous capacitive detection circuit.
Condenser type transfusion sensor the most according to claim 1, it is characterised in that: described two pieces are oppositely arranged
Distance between the end of capacitor plate is the 1/12～1/10 of tube for transfusion diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610465562.2A CN105944183A (en) | 2016-06-23 | 2016-06-23 | Capacitance type infusion sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610465562.2A CN105944183A (en) | 2016-06-23 | 2016-06-23 | Capacitance type infusion sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105944183A true CN105944183A (en) | 2016-09-21 |
Family
ID=56903839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610465562.2A Pending CN105944183A (en) | 2016-06-23 | 2016-06-23 | Capacitance type infusion sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105944183A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109966584A (en) * | 2019-04-16 | 2019-07-05 | 京东方科技集团股份有限公司 | A kind of infusion equipment and infusion management system |
| CN110243734A (en) * | 2019-07-30 | 2019-09-17 | 大连海事大学 | A kind of condenser type hydraulic oil abrasive grain classified Monitoring device |
| CN110376109A (en) * | 2019-07-30 | 2019-10-25 | 大连海事大学 | A kind of condenser type hydraulic oil abrasive grain differentiation monitoring device |
| CN114191654A (en) * | 2021-12-06 | 2022-03-18 | 上海瑞强信息科技有限公司 | Flexible infusion early warning system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1413739A (en) * | 2001-10-22 | 2003-04-30 | 王辉 | Automatic control and alarm device for medical transfusion system |
| CN101143235A (en) * | 2007-10-30 | 2008-03-19 | 深圳市和而泰电子科技有限公司 | Venous transfusion monitoring device and system |
| CN101869732A (en) * | 2010-07-09 | 2010-10-27 | 张文昭 | Capacitance type dropping speed measuring device |
| CN201684236U (en) * | 2010-03-22 | 2010-12-29 | 朱晓栋 | Intravenous infusion drop rate real-time monitoring system |
| CN204337423U (en) * | 2014-12-05 | 2015-05-20 | 陈明询 | Condenser type transfusion device monitoring detection device |
| CN204864362U (en) * | 2015-06-17 | 2015-12-16 | 北京哈特凯尔医疗科技有限公司 | Capacitanc infusion monitoring device |
| CN205964624U (en) * | 2016-06-23 | 2017-02-22 | 江苏顺源集团有限公司 | Capacitanc infusion sensor |
-
2016
- 2016-06-23 CN CN201610465562.2A patent/CN105944183A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1413739A (en) * | 2001-10-22 | 2003-04-30 | 王辉 | Automatic control and alarm device for medical transfusion system |
| CN101143235A (en) * | 2007-10-30 | 2008-03-19 | 深圳市和而泰电子科技有限公司 | Venous transfusion monitoring device and system |
| CN201684236U (en) * | 2010-03-22 | 2010-12-29 | 朱晓栋 | Intravenous infusion drop rate real-time monitoring system |
| CN101869732A (en) * | 2010-07-09 | 2010-10-27 | 张文昭 | Capacitance type dropping speed measuring device |
| CN204337423U (en) * | 2014-12-05 | 2015-05-20 | 陈明询 | Condenser type transfusion device monitoring detection device |
| CN204864362U (en) * | 2015-06-17 | 2015-12-16 | 北京哈特凯尔医疗科技有限公司 | Capacitanc infusion monitoring device |
| CN205964624U (en) * | 2016-06-23 | 2017-02-22 | 江苏顺源集团有限公司 | Capacitanc infusion sensor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109966584A (en) * | 2019-04-16 | 2019-07-05 | 京东方科技集团股份有限公司 | A kind of infusion equipment and infusion management system |
| CN110243734A (en) * | 2019-07-30 | 2019-09-17 | 大连海事大学 | A kind of condenser type hydraulic oil abrasive grain classified Monitoring device |
| CN110376109A (en) * | 2019-07-30 | 2019-10-25 | 大连海事大学 | A kind of condenser type hydraulic oil abrasive grain differentiation monitoring device |
| CN114191654A (en) * | 2021-12-06 | 2022-03-18 | 上海瑞强信息科技有限公司 | Flexible infusion early warning system |
| CN114191654B (en) * | 2021-12-06 | 2024-03-26 | 上海瑞强信息科技有限公司 | Flexible infusion early warning system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 139, Jiangjun Avenue, Jiangning Development Zone, Nanjing, Jiangsu Province, 210000 Applicant after: Jiangsu Weigang Group Co., Ltd Address before: 211106, No. 37, general road, Jiangning District, Jiangsu, Nanjing Applicant before: JIANGSU SHUNYUAN GROUP Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160921 |