CN116418058A - Infusion pump and power switch circuit thereof - Google Patents

Infusion pump and power switch circuit thereof Download PDF

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Publication number
CN116418058A
CN116418058A CN202111648723.9A CN202111648723A CN116418058A CN 116418058 A CN116418058 A CN 116418058A CN 202111648723 A CN202111648723 A CN 202111648723A CN 116418058 A CN116418058 A CN 116418058A
Authority
CN
China
Prior art keywords
infusion pump
switch
electric switch
power supply
switching circuit
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
Application number
CN202111648723.9A
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Chinese (zh)
Inventor
陈宇龙
蔡新坤
曹华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Dingdian Medical Instrument Co ltd
Original Assignee
Wuxi Dingdian Medical Instrument Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuxi Dingdian Medical Instrument Co ltd filed Critical Wuxi Dingdian Medical Instrument Co ltd
Priority to CN202111648723.9A priority Critical patent/CN116418058A/en
Publication of CN116418058A publication Critical patent/CN116418058A/en
Pending legal-status Critical Current

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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
    • A61M5/142—Pressure infusion, e.g. using pumps
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • 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
    • A61M2205/27—General characteristics of the apparatus preventing use
    • A61M2205/273—General characteristics of the apparatus preventing use preventing reuse, e.g. of disposables

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Power Engineering (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Anesthesiology (AREA)
  • Veterinary Medicine (AREA)
  • Vascular Medicine (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The present disclosure provides an infusion pump and a power switching circuit thereof, the power switching circuit comprising: the positive electrode of the power supply is connected with the positive electrode of the infusion pump, and the negative electrode of the power supply is grounded; the single chip microcomputer comprises a voltage detection port and a power signal output port; the first end of the manual switch is connected with the positive electrode of the power supply, and the second end of the manual switch is connected with the voltage detection port of the singlechip; the first end of the electric switch is connected with the negative electrode of the infusion pump, the second end of the electric switch is grounded, and the control end of the electric switch is connected with the power signal output port of the singlechip. The infusion pump and the power switch circuit thereof provided by the disclosure have the advantages of good stability, strong shock resistance, low energy consumption and long endurance.

Description

Infusion pump and power switch circuit thereof
Technical Field
The present disclosure relates to the field of medical devices, and more particularly, to an infusion pump and a power switching circuit thereof.
Background
Infusion pumps, drug pumps and drug delivery devices are medical devices that are often used in modern medicine. The infusion pump is infusion equipment capable of controlling the infusion flow rate, so that the infusion speed and the medicine quantity meet the requirements of users. The infusion pump can improve the efficiency and flexibility of clinical administration operation and reduce nursing workload. Infusion pumps are typically mechanical or electronic control devices that control the infusion rate by acting on an infusion catheter.
Infusion pumps come in a variety of forms, such as roller pumps, push pumps. The infusion pump basically comprises a pump body, a drug storage and an infusion catheter connected with the pump body. After the medicine storage is filled into the pump, the guide needle at the front end of the connected infusion catheter is pricked into the subcutaneous part of the patient by the needle injector, and then the spiral motor of the battery-driven infusion pump drives the piston in the infusion catheter to infuse the medicine into the patient.
The infusion pump uses a single-pole single-throw switch as a circuit switch, and the connection between the movable end and the fixed end of the single-pole single-throw switch is easy to slip and easily causes the work interruption of the infusion pump due to the poor stability and poor shock resistance of the single-pole single-throw switch.
Disclosure of Invention
In view of the above, an object of the present disclosure is to provide an infusion pump and a power switch circuit thereof, which can avoid the factor of unstable performance of a single pole single throw switch and improve the shock resistance of the power switch circuit.
Based on the above object, the present disclosure provides an infusion pump power switching circuit, comprising:
the positive electrode of the power supply is connected with the positive electrode of the infusion pump, and the negative electrode of the power supply is grounded;
the single chip microcomputer comprises a voltage detection port and a power signal output port;
the first end of the manual switch is connected with the positive electrode of the power supply, and the second end of the manual switch is connected with the voltage detection port of the singlechip;
the first end of the electric switch is connected with the negative electrode of the infusion pump, the second end of the electric switch is grounded, and the control end of the electric switch is connected with the power signal output port of the singlechip; the singlechip is based on the detection signal of the voltage detection port, controls the power supply signal output port to send a power supply starting signal to the control end of the electric switch, and controls the electric switch to be communicated.
Further, the manual switch is a single pole single throw switch.
Further, the electric switch is a MOS tube, the first end of the electric switch is the drain electrode of the MOS tube, the second end of the electric switch is the source electrode of the MOS tube, and the control end of the electric switch is the grid electrode of the MOS tube.
Further, the MOS tube is an NMOS tube.
Further, the infusion pump power supply switch circuit further comprises a capacitor, one end of the capacitor is connected with the control end of the electric switch, and the other end of the capacitor is grounded.
Further, the infusion pump power supply switch circuit further comprises a first resistor, and the first resistor is connected in series between the second end of the manual switch and the grid electrode of the MOS tube.
Further, the infusion pump power supply switch circuit further comprises a second resistor, one end of the second resistor is connected with the second end of the manual switch, and the other end of the second resistor is grounded.
Further, the infusion pump power supply switch circuit further comprises a third resistor, one end of the third resistor is connected with the control end of the electric switch, and the other end of the third resistor is grounded.
The present disclosure also provides an infusion pump comprising a pump body, a liquid storage device, the pump body comprising the infusion pump power switch circuit of any one of claims 1 to 8.
Further, the infusion pump is a disposable infusion pump.
From the above, the infusion pump and the power switch circuit thereof provided by the disclosure can improve the stability and shock resistance of the power switch circuit of the infusion pump, prolong the service life of the battery, have low circuit power consumption and stable power supply, and effectively expand the service scene of the infusion pump; and the infusion pump meets the requirement of automatic production, and has low cost and wide universality.
Specific embodiments are disclosed in detail below with reference to the following description and drawings indicating the manner in which the principles of the disclosed technology may be employed. It should be understood that the embodiments of the present disclosure are not limited in scope thereby. The embodiments of the present disclosure include many variations, modifications and equivalents within the spirit and scope of the appended claims. Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments in combination with or instead of the features of the other embodiments.
Drawings
In order to more clearly illustrate the technical solutions of the present disclosure or related art, the drawings required for the description of the embodiments or related art will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present disclosure, and other drawings may be obtained from these drawings without inventive effort to those of ordinary skill in the art.
FIG. 1 is a schematic diagram of an infusion pump power switch circuit according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of an infusion pump according to an embodiment of the present disclosure.
Detailed Description
For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made to the embodiments described in detail below and to the accompanying drawings.
It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present disclosure should be taken in a general sense as understood by those having ordinary skill in the art to which the present disclosure pertains. The terms "first," "second," and the like, as used in embodiments of the present disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
In order to avoid unstable operation of the infusion pump caused by poor stability of the single pole single throw switch, the present disclosure proposes a power switching circuit of the infusion pump as shown in fig. 1, comprising:
a power supply 101, wherein the positive electrode of the power supply 101 is connected with the positive electrode of the infusion pump, and the negative electrode of the power supply 101 is grounded;
the single chip microcomputer 102, wherein the single chip microcomputer 102 comprises a voltage detection port and a power signal output port;
the manual switch 103, a first end of the manual switch 103 is connected with the positive electrode of the power supply 101, and a second end of the manual switch 103 is connected with a voltage detection port of the singlechip 102;
the first end of the electric switch 104 is connected with the negative electrode of the infusion pump, the second end of the electric switch 104 is grounded, and the control end of the electric switch 104 is connected with the power signal output port of the singlechip 102; the singlechip 102 controls the power signal output port to send a power starting signal to the control end of the electric switch 104 based on the detection signal of the voltage detection port, and controls the electric switch 104 to be communicated.
The infusion pump power supply switch circuit at least comprises a power supply 101, a singlechip 102, a manual switch 103 and an electric switch 104. The power supply 101 provides electric energy for the infusion pump, the positive pole of power supply 101 is connected with the positive pole of the infusion pump, supplies energy for the infusion pump, the negative pole of power supply 101 is grounded, forms complete return circuit, can protect power supply 101 simultaneously. The singlechip 102 at least comprises a voltage detection port and a power signal output port. The voltage detection port is connected with the second end of the switch. During production, the infusion pump circuit is turned on by another interface, at which point the voltage at the manual switch 103 is 0. When a user uses the infusion pump, the switch is closed, the circuit is started, and the voltage detection port detects that the voltage at the switch is increased and is in a high level state. The power signal output port is connected with the control end of the electric switch 104, and when the voltage detection port of the singlechip 102 detects that the switching voltage is in a high level state, the power signal output port sends a power starting signal to the control end of the electric switch 104 to control the electric switch 104 to be communicated so as to supply energy for the infusion pump. The user controls the switching of the infusion pump operating state and the stopped state by means of the manual switch 103. The first end of the manual switch 103 is connected with the positive electrode of the power supply 101, and the second end is connected with the singlechip 102. The electric switch 104 is used as a protection mechanism of the power switch circuit, and includes a first end, a second end and a control end. The first end is connected with the negative electrode of the infusion pump, the second end is grounded, and the control end is connected with the power signal output port of the singlechip 102. When the singlechip 102 always sends a power starting signal to the electric switch 104, the electric switch 104 is in an on state, so that the power switching circuit is ensured to be smooth, and the infusion pump is continuously supplied with power.
In one possible embodiment, the manual switch 103 is a single pole single throw switch. The single-pole single-throw switch has simple structure and low cost, and can effectively reduce the production cost of the infusion pump.
In one possible implementation manner, the electric switch 104 is a MOS transistor, the first end of the electric switch 104 is a drain electrode of the MOS transistor, the second end of the electric switch 104 is a source electrode of the MOS transistor, and the control end of the electric switch 104 is a gate electrode of the MOS transistor.
In a preferred embodiment, the MOS transistor is an NMOS transistor.
In a preferred embodiment, the infusion pump power switching circuit further comprises a capacitor C1, one end of the capacitor C1 is connected to the control terminal of the electric switch 104, and the other end of the capacitor C1 is grounded.
The MOS transistor is a metal-oxide-semiconductor field effect transistor, or metal-insulator-semiconductor. The NMOS tube is one of MOS tubes, and when the voltage between the grid electrode and the source electrode is larger than a certain value, the drain electrode and the source electrode can be conducted. An MOS tube is used as the electric switch 104, the drain electrode of the MOS tube is connected with the negative electrode of the infusion pump, the source electrode of the MOS tube is grounded, and the grid electrode of the MOS tube is connected with the power signal output port of the singlechip 102. One end of the capacitor C1 is connected with the grid electrode of the MOS tube, and the other end of the capacitor C is grounded. When the switch of the infusion pump is triggered, the power supply 101 circuit is started, the capacitor C1 is charged, and when the charging voltage exceeds the conducting voltage of the MOS tube, the MOS tube is conducted, and the infusion pump is started.
In a possible embodiment, the infusion pump power switch circuit further includes a first resistor R1, and the first resistor R1 is connected in series between the second end of the manual switch 103 and the gate of the MOS transistor.
In a possible embodiment, the infusion pump power switch circuit further comprises a second resistor R2, one end of the second resistor R2 is connected to the second end of the manual switch 103, and the other end of the second resistor R2 is grounded.
In a possible embodiment, the infusion pump power switch circuit further includes a third resistor R3, one end of the third resistor R3 is connected to the control end of the electric switch 104, and the other end of the third resistor R3 is grounded.
Based on the same conception, corresponding to the method of any embodiment, the present disclosure also provides an infusion pump as shown in fig. 2, including a pump body 201 and a liquid storage device, where the pump body includes the power switch circuit of the infusion pump according to any one of claims 1 to 8.
In a preferred embodiment, the infusion pump is a disposable infusion pump.
It should be noted that the foregoing describes some embodiments of the present disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the above embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.
Those of ordinary skill in the art will appreciate that: the discussion of any of the above embodiments is merely exemplary and is not intended to suggest that the scope of the disclosure, including the claims, is limited to these examples; combinations of features of the above embodiments or in different embodiments are also possible within the spirit of the present disclosure, steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present disclosure described above, which are not provided in detail for the sake of brevity.
The disclosed embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Accordingly, any omissions, modifications, equivalents, improvements, and the like, which are within the spirit and principles of the embodiments of the disclosure, are intended to be included within the scope of the disclosure.

Claims (10)

1. An infusion pump power switching circuit, comprising:
the positive electrode of the power supply is connected with the positive electrode of the infusion pump, and the negative electrode of the power supply is grounded;
the single chip microcomputer comprises a voltage detection port and a power signal output port;
the first end of the manual switch is connected with the positive electrode of the power supply, and the second end of the manual switch is connected with the voltage detection port of the singlechip;
the first end of the electric switch is connected with the negative electrode of the infusion pump, the second end of the electric switch is grounded, and the control end of the electric switch is connected with the power signal output port of the singlechip; the singlechip is based on the detection signal of the voltage detection port, controls the power supply signal output port to send a power supply starting signal to the control end of the electric switch, and controls the electric switch to be communicated.
2. The infusion pump power switching circuit of claim 1, wherein the manual switch is a single pole single throw switch.
3. The infusion pump power switching circuit according to claim 1, wherein the electric switch is a MOS transistor, a first end of the electric switch is a drain electrode of the MOS transistor, a second end of the electric switch is a source electrode of the MOS transistor, and a control end of the electric switch is a gate electrode of the MOS transistor.
4. The infusion pump power switching circuit of claim 3, wherein the MOS transistor is an NMOS transistor.
5. The infusion pump power switching circuit of claim 1, further comprising a capacitor, one end of the capacitor being connected to the control terminal of the electrical switch, the other end of the capacitor being grounded.
6. The infusion pump power switching circuit of claim 1, further comprising a first resistor connected in series between the second end of the manual switch and the gate of the MOS transistor.
7. The infusion pump power switching circuit of claim 1, further comprising a second resistor having one end connected to the second end of the manual switch and the other end grounded.
8. The infusion pump power switching circuit of claim 1, further comprising a third resistor, one end of the third resistor being connected to the control terminal of the electrical switch, the other end of the third resistor being grounded.
9. An infusion pump comprising a pump body and a liquid storage device, wherein the pump body comprises the infusion pump power supply switch circuit according to any one of claims 1-8.
10. The infusion pump of claim 9, wherein the infusion pump is a disposable infusion pump.
CN202111648723.9A 2021-12-29 2021-12-29 Infusion pump and power switch circuit thereof Pending CN116418058A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111648723.9A CN116418058A (en) 2021-12-29 2021-12-29 Infusion pump and power switch circuit thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111648723.9A CN116418058A (en) 2021-12-29 2021-12-29 Infusion pump and power switch circuit thereof

Publications (1)

Publication Number Publication Date
CN116418058A true CN116418058A (en) 2023-07-11

Family

ID=87054896

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111648723.9A Pending CN116418058A (en) 2021-12-29 2021-12-29 Infusion pump and power switch circuit thereof

Country Status (1)

Country Link
CN (1) CN116418058A (en)

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