CN212662350U - Hemodialysis blood leakage monitoring device - Google Patents
Hemodialysis blood leakage monitoring device Download PDFInfo
- Publication number
- CN212662350U CN212662350U CN202020510686.XU CN202020510686U CN212662350U CN 212662350 U CN212662350 U CN 212662350U CN 202020510686 U CN202020510686 U CN 202020510686U CN 212662350 U CN212662350 U CN 212662350U
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- 239000008280 blood Substances 0.000 title claims abstract description 24
- 210000004369 blood Anatomy 0.000 title claims abstract description 24
- 238000001631 haemodialysis Methods 0.000 title claims abstract description 14
- 230000000322 hemodialysis Effects 0.000 title claims abstract description 14
- 238000012806 monitoring device Methods 0.000 title claims abstract description 14
- 238000007781 pre-processing Methods 0.000 claims abstract description 19
- 238000013507 mapping Methods 0.000 claims abstract description 17
- 230000008054 signal transmission Effects 0.000 claims abstract description 17
- 238000004458 analytical method Methods 0.000 claims abstract description 7
- 230000006641 stabilisation Effects 0.000 claims abstract description 5
- 238000011105 stabilization Methods 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 8
- 230000000007 visual effect Effects 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 210000000056 organ Anatomy 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 230000000474 nursing effect Effects 0.000 abstract description 4
- 238000000502 dialysis Methods 0.000 abstract description 2
- 230000003321 amplification Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 206010015866 Extravasation Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036251 extravasation Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model discloses a hemodialysis blood leakage monitoring device, which comprises an array sensor, a mapping circuit, a preprocessing unit, a singlechip unit and an alarm; the array sensor is characterized in that a sensor array patch is manufactured by a flexible circuit board, the head end of the sensor array patch is in a ring shape, 10 array sensing points are distributed on the ring shape, fixing wings are arranged on two sides of the ring shape, the 10 array sensing points are connected with a mapping circuit through signal transmission lines, the mapping circuit is connected with a preprocessing unit, signals are subjected to preprocessing to realize voltage stabilization and amplification, a plurality of input voltages are converted into single 0-2V output voltages, different voltages represent different risk levels, and threshold value analysis is determined through a Wifi module and a single chip microcomputer; the WiFi module and the single chip microcomputer are respectively connected with the alarm unit and the PC nurse station end; the utility model can be directly attached to the body surface of a patient without discomfort; when the dialysis patient leaks blood, the real-time alarm can be sent out, and meanwhile, the data are wirelessly transmitted to the nursing station monitoring terminal.
Description
Technical Field
The utility model belongs to the technical field of the monitoring of leaking blood, concretely relates to hemodialysis leaks blood monitoring devices.
Background
Hemodialysis is a clinical procedure that requires the puncture of a body surface. Needle dislodgement can lead to blood leakage and may be life threatening for the patient. Most of the existing devices for detecting blood leakage adopt a single-point detection mode, and have higher requirements on the placement position of a sensor; blood extravasation of 1-2ml can be detected, and the detection sensitivity is low; adopting a Bluetooth or wired signal transmission mode; expensive and not designed for multi-bed testing. Single-point detection leakage directly covers the puncture point, presents a greater risk, and the wrong report condition is many to when blood leakage takes place, blood can begin to leak from near the needle point. When a signal is detected at a sensitive point that is further from the needle tip, this means that the patient's blood has leaked out more, at which point the risk level is higher.
Disclosure of Invention
The utility model aims at providing a hemodialysis leaks blood monitoring devices provides wideer detection area, changes single-point detection mode, reduces the mistake and reports the condition, reduces the risk.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
the hemodialysis blood leakage monitoring device comprises an array sensor, a mapping circuit, a preprocessing unit, a single chip microcomputer unit and an alarm unit; the array sensor is characterized in that a sensor array patch is manufactured by a flexible printed circuit board, the head end of the sensor array patch is in a ring shape, 10 array sensing points are distributed on the ring shape, fixing wings are arranged on two sides of the ring shape, the 10 array sensing points are connected with a mapping circuit through signal transmission lines, the mapping circuit is connected with a preprocessing unit, the preprocessing unit realizes voltage stabilization on signals, a plurality of voltage inputs are simplified into single voltage output within a range of 0-2V, and threshold analysis is determined through a Wifi module and an internal microcontroller MCU module; and the WiFi module and the MCU module of the internal microcontroller are respectively connected with the alarm unit and the PC nurse station terminal.
Further, the array sensing points and the signal transmission lines are printed on the substrate in a silk-screen mode; the signal transmission line is embedded into the insulating layer, only the array sensing points extending out of the signal transmission line are insulated, so that signal transmission interference is avoided, and the distance between the sensing points of the measuring line can reach 0.1 mm.
Furthermore, a WiFi module and an internal microcontroller MCU module are combined into one module, and a CC3200 version Wi-Fi transparent transmission module is specifically adopted.
Furthermore, the CC3200 version Wi-Fi transparent transmission module adopts a chip design of a Simple Link WIFI 3200 with the latest TI, and integrates the MCU of high-performance ARM Cortex-M4.
Further, the WiFi wireless transmission sends information to the PC nurse station, the alarm unit provides visual and audible alarms, the visual alarms comprise organic light emitting diodes, and the audible alarms comprise buzzers.
Further, the preprocessing unit comprises an amplifier and a rectifier.
The utility model discloses following beneficial effect has:
the utility model can be directly attached to the body surface of a patient without discomfort; when the dialysis patient leaks blood, the real-time alarm can be sent out, and meanwhile, the data are wirelessly transmitted to the nursing station monitoring terminal.
The head end of the sensor array patch is in a ring shape to provide a wider detection area, so that the sensor array patch can surround a puncture point and cannot directly cover the puncture point, and possible risks are reduced.
Different signals are generated by different weights, voltage stabilization is realized through a signal preprocessing unit, and a plurality of voltage inputs are simplified into single voltage output within the range of 0-2V, so that a risk range interval is determined. In addition, through the WiFi module, an internal microcontroller MCU determines threshold analysis; when the voltage exceeds the interval threshold, the module immediately triggers an alarm. Finally, the data is sent to the carestation via WiFi.
Drawings
Fig. 1 is a diagram of a monitoring device architecture.
FIG. 2 is a diagram of an array sensor and mapping circuit.
1. Array sensor, 2, fixed wing, 3, array sensing point.
Detailed Description
The invention will be further explained with reference to the drawings:
as shown in fig. 1-2, the hemodialysis blood leakage monitoring device comprises an array sensor 1, a mapping circuit, a preprocessing unit, a single chip unit and an alarm unit; the array sensor is characterized in that a sensor array patch is manufactured by a flexible printed circuit board, the head end of the sensor array patch is in a ring shape, 10 array sensing points are distributed on the ring shape, fixing wings 2 are arranged on two sides of the ring shape, 10 array sensing points 3 are connected with a mapping circuit through signal transmission lines, the mapping circuit is connected with a preprocessing unit, the preprocessing unit realizes voltage stabilization on signals, a plurality of voltage inputs are simplified into single voltage outputs within the range of 0-2V, and threshold analysis is determined through a Wifi module and an internal microcontroller MCU module; and the WiFi module and the MCU module of the internal microcontroller are respectively connected with the alarm unit and the PC nurse station terminal. The array sensing points and the signal transmission lines are printed on the substrate in a silk-screen mode; the signal transmission line is embedded into the insulating layer, only the array sensing points extending out of the signal transmission line are insulated, so that signal transmission interference is avoided, and the distance between the sensing points of the measuring line can reach 0.1 mm. The WiFi module and the internal microcontroller MCU module are combined into one module, and a CC3200 version Wi-Fi transparent transmission module is specifically adopted. The Wi-Fi transparent transmission module of the CC3200 version adopts a chip design of a Simple Link WIFI 3200 with the latest TI, and integrates an MCU of high-performance ARM Cortex-M4. WiFi wireless transmission sends information to PC nurse station end, and the alarm unit provides visual and audible alarm, and visual alarm includes organic light emitting diode, and audible alarm includes bee calling organ. The pre-processing unit comprises an amplifier and a rectifier (schematically shown in fig. 1).
Example (b):
in fig. 1, the utility model discloses an array sensor 1, mapping circuit, preprocessing unit and MCU module and alarm unit, the sensor array paster of making by Flexible Printed Circuit Board (FPCB) has 10 array sensing point 3 (probe) on it, and the head end of sensor array paster is the circulus, can surround the puncture point, can not directly cover the puncture point, provides wideer detection area, and preprocessing unit specifically comprises isolation amplifier, rectifier and amplifier.
FIG. 2 shows a schematic relationship between the array sensing points 3 connected to the mapping circuit through signal transmission lines, the arrangement of resistors, and the circuit inside the mapping circuit in FIG. 2; after the array sensing point 3 detects a blood leak, the mapping circuit assigns a weight ratio for each conductance point and converts the multiple voltage inputs into a single voltage output. After preprocessing the signal, performing signal analysis in an internal Microcontroller (MCU), and specifically determining threshold analysis by a WiFi module and the internal Microcontroller (MCU); when the signal exceeds the threshold value, the module immediately triggers an alarm, when the alarm component sends information to the nursing station by WiFi wireless transmission, a built-in screen and sound function of the device can be synchronized to provide a visual alarm function and an audible alarm function, an Organic Light Emitting Diode (OLED) display device provides a visual alarm signal, a buzzer provides an audible alarm, the WiFi module is used for replacing a traditional USB data line, and the connection relationship among the modules is clear to a person skilled in the art and can be realized.
Furthermore, a WiFi module and an internal microcontroller MCU module are combined into a module, namely a CC3200 version Wi-Fi transparent transmission module is adopted, and the module comprises a WiFi network processor, a power management unit and a microcontroller unit. The module has the advantages of low voltage requirement of only 2.1-3.7v and small volume (18 mm). Then, the module adopts an 80211 b/g/n protocol, and the effective indoor range of the module can reach 100m according to different specifications of antenna configuration. The power supply supplies power to each part of modules or units. Meanwhile, the alarm signal is transmitted to a system database through Wi-Fi and is synchronized to a monitoring terminal of a nursing station, and a display screen is informed to remind medical staff to take appropriate measures immediately to prevent fatal accidents.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. The hemodialysis blood leakage monitoring device comprises a power supply and is characterized by comprising an array sensor (1), a mapping circuit, a preprocessing unit, an MCU (microprogrammed control unit) and an alarm unit; the array sensor (1) is characterized in that a sensor array patch is manufactured by a flexible printed circuit board, the head end of the sensor array patch is in a ring shape, 10 array sensing points (3) are distributed on the ring shape, fixing wings (2) are arranged on two sides of the ring shape, the 10 array sensing points (3) are connected with a mapping circuit through signal transmission lines, the mapping circuit is connected with a preprocessing unit, the preprocessing unit realizes voltage stabilization on signals, a plurality of voltage inputs are simplified into single voltage outputs within a range of 0-2V, and threshold value analysis is determined through a Wifi module and an internal microcontroller MCU module; and the WiFi module and the MCU module of the internal microcontroller are respectively connected with the alarm unit and the PC nurse station terminal.
2. The hemodialysis blood leak monitoring device of claim 1, wherein: the array sensing points and the signal transmission lines are printed on the substrate in a silk-screen mode; the signal transmission line is embedded into the insulating layer, only the array sensing points are arranged outside the insulating layer to avoid signal transmission interference, and the distance between the sensing points of the sensing line can reach 0.1mm to prevent false alarm.
3. The hemodialysis blood leak monitoring device of claim 1, wherein: the WiFi module and the internal microcontroller MCU module are combined into one module, and the CC3200 version Wi-Fi transparent transmission module is specifically adopted for blood leakage detection and wireless transmission.
4. The hemodialysis blood leak monitoring device of claim 3, wherein: the Wi-Fi transparent transmission module of the CC3200 version adopts a chip design of a Simple Link WIFI 3200 with the latest TI, and integrates an MCU of high-performance ARM Cortex-M4.
5. The hemodialysis blood leak monitoring device of claim 1, wherein: WiFi wireless transmission sends information to PC nurse station end, and the alarm unit provides visual and audible alarm, and visual alarm includes organic light emitting diode, and audible alarm includes bee calling organ.
6. The hemodialysis blood leak monitoring device of claim 1, wherein: the preprocessing unit includes an amplifier and a rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020510686.XU CN212662350U (en) | 2020-04-09 | 2020-04-09 | Hemodialysis blood leakage monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020510686.XU CN212662350U (en) | 2020-04-09 | 2020-04-09 | Hemodialysis blood leakage monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212662350U true CN212662350U (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020510686.XU Expired - Fee Related CN212662350U (en) | 2020-04-09 | 2020-04-09 | Hemodialysis blood leakage monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212662350U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116019427A (en) * | 2022-12-29 | 2023-04-28 | 中国人民解放军第三〇五医院 | Blood seepage alarm device and blood seepage alarm method |
-
2020
- 2020-04-09 CN CN202020510686.XU patent/CN212662350U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116019427A (en) * | 2022-12-29 | 2023-04-28 | 中国人民解放军第三〇五医院 | Blood seepage alarm device and blood seepage alarm method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210309 |
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| CF01 | Termination of patent right due to non-payment of annual fee |