CN106730130B - Infusion pump with automatic pressure zero-setting and verification functions - Google Patents
Infusion pump with automatic pressure zero-setting and verification functions Download PDFInfo
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- CN106730130B CN106730130B CN201710036293.2A CN201710036293A CN106730130B CN 106730130 B CN106730130 B CN 106730130B CN 201710036293 A CN201710036293 A CN 201710036293A CN 106730130 B CN106730130 B CN 106730130B
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- signal processing
- processing circuit
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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
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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
- A61M5/172—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 electrical or electronic
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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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/70—General characteristics of the apparatus with testing or calibration facilities
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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
The invention discloses an infusion pump with automatic pressure zero setting and verification, which comprises: the device comprises a door closing mechanism, an automatic liquid stopping clamp, an upper pressure sensor, a first signal processing circuit, a lower pressure sensor, a second signal processing circuit, a pump body mechanism and a controller; the upper pressure sensor transmits an acquired upper pressure signal to the first signal processing circuit, and the lower pressure sensor transmits an acquired lower pressure signal to the second signal processing circuit; the door closing mechanism, the two signal processing circuits, the automatic liquid stopping clamp and the pump body mechanism are all electrically connected to the controller. When the infusion pump is started, the infusion tube is installed, and after receiving a door closing instruction, the pressure circuit is automatically adjusted to zero and the pressure detection link is automatically verified to work normally, so that the pressure measurement in the subsequent infusion process is accurate, and the treatment safety of a patient using the infusion pump is ensured.
Description
Technical Field
The invention belongs to the technical field of infusion pumps, and particularly relates to an infusion pump with automatic pressure zero setting and verification functions.
Background
With the technological progress, people use the infusion pump to treat diseases more and more, and people also continuously put forward higher requirements on the reliability of the infusion pump, but because the infusion pump is a product composed of various electronic components, after the infusion pump is used for a period of time, or because of the change of environmental temperature and humidity, parameter drift can occur to some electronic components or sensors, so that the infusion pump is caused to work abnormally, and risks are brought to patients. The infusion pump pressure detection is a method which can cause parameter drift, because the pressure sensor has sensitivity, the zero two parameters can generate creep and drift along with time and temperature conversion, and in addition, many parameters of an operational amplifier used by a signal processing circuit are sensitive to temperature, which brings challenges to the accuracy of the infusion pump pressure detection.
Disclosure of Invention
In order to solve the problem of pressure parameter drift of the infusion pump in the prior art, the invention provides the infusion pump with automatic pressure zero setting and verification.
The specific technical scheme of the invention is as follows:
an infusion pump with pressure auto-zero and verification, comprising: the device comprises a door closing mechanism, an automatic liquid stopping clamp, an upper pressure sensor, a first signal processing circuit, a lower pressure sensor, a second signal processing circuit, a pump body mechanism and a controller;
the door closing mechanism is used for closing a pump door of the infusion pump;
the automatic liquid stopping clamp is used for closing or opening the infusion tube;
the upper pressure sensor transmits an acquired upper pressure signal to the first signal processing circuit, and the lower pressure sensor transmits an acquired lower pressure signal to the second signal processing circuit;
the pump body mechanism is used for extruding the liquid medicine in the tube for transfusion;
the automatic liquid stopping clamp, the first signal processing circuit, the second signal processing circuit, the door closing mechanism and the pump body mechanism are electrically connected to the controller;
when the infusion pump is loaded with an infusion tube, the first signal processing circuit and the second signal processing circuit respectively process load pressure signals fed back by the two pressure sensors and then transmit the load pressure signals to the controller, the controller reads and compares the two pressure signals, and if a certain pressure value exceeds a preset value range, the controller instructs the signal processing circuit corresponding to the pressure value to perform zero setting processing, and the pressure value is adjusted to the preset value; after zero setting, the controller instructs the door closing mechanism to close the pump door;
after the pump door is closed, the automatic liquid stopping clamp is used for verifying whether the lower pressure sensor and the second signal processing circuit work normally or not; when the automatic liquid stopping clamp is verified, the controller closes the automatic liquid stopping clamp, instructs the infusion pump body mechanism to operate for a plurality of cycles, reads the lower pressure value, works normally if the lower pressure value rises to be within a preset value range, and opens the automatic liquid stopping clamp to perform normal infusion.
Preferably, the upper pressure sensor and the lower pressure sensor are respectively located at the upstream and the downstream of the pump body mechanism of the infusion pump, and respectively detect the upstream pressure and the downstream pressure of the pump body mechanism.
Preferably, the down pressure sensor is located between the pump mechanism and the automatic liquid stop clamp.
Preferably, the infusion pump is further provided with an alarm for warning prompt of zero setting failure and abnormal verification.
By adopting the technical scheme, the invention can automatically carry out pressure circuit zero setting and verify whether the pressure detection link works normally or not before the infusion is started, thereby ensuring the accurate pressure measurement in the subsequent infusion process and further ensuring the safety of the patient using the infusion pump for treatment.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a view showing the relative arrangement of some components of the present invention with respect to the infusion tube;
FIG. 3 is a schematic block diagram of the pressure signal processing of the present invention;
FIG. 4 is a schematic diagram of a pressure signal processing circuit according to the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
Referring to fig. 1-2, the present invention provides an infusion pump with pressure auto-zero and verification, comprising: a door closing structure 101, an automatic liquid stopping clamp 102, an upper pressure sensor 103, a first signal processing circuit 104, a lower pressure sensor 105, a second signal processing circuit 106, a pump body mechanism 107, a controller 108, an alarm 109, an infusion tube 110 and a pump door 111;
the door closing mechanism 101 is used for closing a pump door of the infusion pump;
the automatic liquid-stopping clamp 102 is used for closing (squeezing) or opening (loosening) the infusion tube 110;
the upper pressure sensor 103 transmits the acquired upper pressure signal to the first signal processing circuit 104, and the lower pressure sensor 105 transmits the acquired lower pressure signal to the second signal processing circuit 106;
the pump body mechanism 107 is used for extruding the liquid medicine in the tube for transfusion;
the automatic liquid stopping clamp 102, the first signal processing circuit 104, the second signal processing circuit 106, the pump body mechanism 107 and the door closing mechanism 101 are electrically connected to the controller 108;
when the infusion pump is provided with the infusion tube 110 by an operator opening a pump door 111, the first signal processor 104 and the second signal processing circuit 106 respectively process load pressure signals fed back by the two pressure sensors 103 and 105 and transmit the processed load pressure signals to the controller 108, the controller 108 reads and compares the two pressure signals, if a certain pressure value exceeds a preset value range, the controller refers to the signal processing circuit 104 or 106 corresponding to the pressure value to perform zero setting processing, and the pressure value is adjusted to the preset value; after the zero setting, the controller 108 instructs the door closing mechanism 101 to close the pump door 111; if the predetermined value is not met, the controller 108 will instruct the alarm 109 to send an alarm to alert the operator to service the pump.
After the pump door 111 is closed, the automatic liquid stop clamp 102 can be used to verify whether the down pressure sensor 105 and the second signal processing circuit 106 are working properly. During verification, the controller 108 closes the automatic liquid stopping clamp 102, instructs the infusion pump body mechanism 107 to perform a plurality of cycles, reads the pressure value, works normally if the pressure value rises to a predetermined value range, and then the controller 108 opens the automatic liquid stopping clamp 102 to perform a normal infusion function. If the down pressure value does not rise to the preset value range, the down pressure sensor or the signal processing circuit thereof works abnormally, and the controller 108 instructs the alarm 109 to give an alarm to prompt an operator to maintain the pump.
Wherein, the upper pressure sensor 103 and the lower pressure sensor 105 are respectively positioned at the upstream and downstream of the pump body mechanism 107 of the infusion pump, and respectively detect the upstream pressure (the pressure is reduced when the blockage occurs between the infusion bottle and the infusion pump) and the downstream pressure (the pressure born by the blood vessel of the patient) of the pump body mechanism 107; the down force sensor 105 is located between the pump mechanism 107 and the auto-stop clamp 102.
Fig. 3 is a schematic block diagram of the pressure signal processing of the present invention, showing that the pressure sensor is connected to a signal processing circuit, which is connected to a controller.
FIG. 4 is a schematic diagram of a pressure signal processing circuit according to the present invention. Wherein S1 is a pressure sensor, U3A, U3B and other components constitute a signal processing circuit, YLOUT is the output of the signal processing circuit and sends to the controller, and YaLi _ adj is the signal that the controller sent, sends to the signal processing circuit for pressure zeroing.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (1)
1. An infusion pump with pressure auto-zero and verification, comprising: the device comprises a door closing mechanism, an automatic liquid stopping clamp, an upper pressure sensor, a first signal processing circuit, a lower pressure sensor, a second signal processing circuit, a pump body mechanism and a controller;
the door closing mechanism is used for closing a pump door of the infusion pump;
the automatic liquid stopping clamp is used for closing or opening the infusion tube;
the upper pressure sensor transmits an acquired upper pressure signal to the first signal processing circuit, and the lower pressure sensor transmits an acquired lower pressure signal to the second signal processing circuit;
the pump body mechanism is used for extruding the liquid medicine in the tube for transfusion;
the automatic liquid stopping clamp, the first signal processing circuit, the second signal processing circuit, the door closing mechanism and the pump body mechanism are all electrically connected to the controller;
when the infusion pump is loaded with an infusion tube, the first signal processing circuit and the second signal processing circuit respectively process load pressure signals fed back by the two pressure sensors and then transmit the load pressure signals to the controller, the controller reads and compares the two pressure signals, if a certain pressure value exceeds a preset value range, the controller instructs the signal processing circuit corresponding to the pressure value to perform zero setting processing, and the pressure value is adjusted to the preset value; after zero setting, the controller instructs the door closing mechanism to close the pump door;
after the pump door is closed, the automatic liquid stopping clamp is used for verifying whether the down pressure sensor and the second signal processing circuit work normally or not, when the verification is carried out, the controller firstly closes the automatic liquid stopping clamp, instructs the pump body mechanism of the infusion pump to operate for a plurality of cycles, reads a down pressure value, works normally if the down pressure value rises to a preset value range, and then opens the automatic liquid stopping clamp to carry out normal infusion;
the upper pressure sensor and the lower pressure sensor are respectively positioned at the upstream and the downstream of the pump body mechanism of the infusion pump and respectively detect the upstream pressure and the downstream pressure of the pump body mechanism;
the lower pressure sensor is positioned between the pump body mechanism and the automatic liquid stopping clamp;
the infusion pump is also provided with an alarm for alarm prompt of zero setting failure and abnormal verification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710036293.2A CN106730130B (en) | 2017-01-17 | 2017-01-17 | Infusion pump with automatic pressure zero-setting and verification functions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710036293.2A CN106730130B (en) | 2017-01-17 | 2017-01-17 | Infusion pump with automatic pressure zero-setting and verification functions |
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| Publication Number | Publication Date |
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| CN106730130A CN106730130A (en) | 2017-05-31 |
| CN106730130B true CN106730130B (en) | 2023-04-11 |
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| CN201710036293.2A Active CN106730130B (en) | 2017-01-17 | 2017-01-17 | Infusion pump with automatic pressure zero-setting and verification functions |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108671320B (en) * | 2018-04-24 | 2024-03-12 | 深圳麦科田生物医疗技术股份有限公司 | Infusion pump and automatic liquid stopping method thereof |
| WO2020014894A1 (en) * | 2018-07-18 | 2020-01-23 | 深圳迈瑞科技有限公司 | Infusion alarm system and method, computer device, and storage medium |
| WO2020014895A1 (en) * | 2018-07-18 | 2020-01-23 | 深圳迈瑞科技有限公司 | Infusion alarm system and method, and computer device and storage medium |
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| CN104271172A (en) * | 2012-03-09 | 2015-01-07 | 泽维克斯公司 | Occlusion detection method |
| CN104507516A (en) * | 2012-05-24 | 2015-04-08 | 德卡产品有限公司 | Apparatus for infusing fluid |
| CN204337422U (en) * | 2014-12-03 | 2015-05-20 | 深圳市好克光电仪器有限公司 | Infusion pump feedback control system |
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| DE3912405C1 (en) * | 1989-04-15 | 1990-10-31 | B. Braun Melsungen Ag, 3508 Melsungen, De | |
| US8567235B2 (en) * | 2010-06-29 | 2013-10-29 | Baxter International Inc. | Tube measurement technique using linear actuator and pressure sensor |
| CN203447572U (en) * | 2013-08-13 | 2014-02-26 | 广州华玺医疗科技有限公司 | Automatic infusion parameter calibration system for infusion pump |
| CN105709305B (en) * | 2014-12-03 | 2021-11-16 | 深圳市好克医疗仪器股份有限公司 | Infusion pump feedback control system and feedback control method thereof |
| CN104606737A (en) * | 2015-01-23 | 2015-05-13 | 深圳市科曼医疗设备有限公司 | Infusion pump and infusion pump blockage detecting method |
| WO2016208750A1 (en) * | 2015-06-26 | 2016-12-29 | 日東電工株式会社 | Drug administration mechanism and method for producing pump unit for drug administration mechanism |
| CN207286401U (en) * | 2017-01-17 | 2018-05-01 | 深圳市好克医疗仪器股份有限公司 | A kind of infusion pump with pressure automatic zero set and verification |
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- 2017-01-17 CN CN201710036293.2A patent/CN106730130B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104271172A (en) * | 2012-03-09 | 2015-01-07 | 泽维克斯公司 | Occlusion detection method |
| CN104507516A (en) * | 2012-05-24 | 2015-04-08 | 德卡产品有限公司 | Apparatus for infusing fluid |
| CN204337422U (en) * | 2014-12-03 | 2015-05-20 | 深圳市好克光电仪器有限公司 | Infusion pump feedback control system |
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| CN106730130A (en) | 2017-05-31 |
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