CN203971016U - The perfusion and drainage system of the intelligence ventricles of the brain or hematoma - Google Patents
The perfusion and drainage system of the intelligence ventricles of the brain or hematoma Download PDFInfo
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- CN203971016U CN203971016U CN201420328589.3U CN201420328589U CN203971016U CN 203971016 U CN203971016 U CN 203971016U CN 201420328589 U CN201420328589 U CN 201420328589U CN 203971016 U CN203971016 U CN 203971016U
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Abstract
This utility model relates to the perfusion and drainage system of the intelligent ventricles of the brain or hematoma, comprise central processing unit, its input is connected with the outfan of keyboard circuit, its outfan is respectively with first, two stepping motor drive circuit, the input of display circuit is connected, the outfan of the first stepper motor driving circuit is connected with the first stepping motor M 1, the outfan of the second stepper motor driving circuit is respectively with second, three motor M2, M3 is connected, the first stepping motor M 1 promotes actuating device with syringe and is connected, the second stepping motor M 2 is connected with intrusion pipe switching device, the 3rd motor M3 is connected with drainage tube switching device.This utility model carries out the hand operation of injection and open drainage at every turn without medical personnel, after initial dose adjustment is placed in syringe, remaining operation is by the full intellectualized operation of this utility model, medical personnel's responsibility is exactly to be responsible for recording amount and the character of drain, has greatly alleviated medical personnel's labor intensity.
Description
Technical field
This utility model relates to field of medical technology, the perfusion and drainage system of especially a kind of intelligent ventricles of the brain or hematoma.
Background technology
At present, intracranial hemorrhage, particularly Spontaneous Intracranial Hemorrhage, as hypertensive cerebral hemorrhage, form hematoma or break into the ventricles of the brain at intracranial, neurosurgery application Minimally Invasive Surgery is removed hematoma, adopt after hematoma or ventricles of the brain localised puncture, the drainage tube of implantation belt threeway, after operation, the normal saline containing finite concentration urokinase is injected into the ventricles of the brain or Hemorrhagic location through drainage tube, after effect a period of time, the hematoma of dissolving is drained in drainage bag through drainage tube again, after drain certain hour, the normal saline reinjecting containing finite concentration urokinase is to the ventricles of the brain or Hemorrhagic location, after effect a period of time, again the hematoma of dissolving is drained in drainage bag through drainage tube again, according to circumstances to repeat every day 3 to 4 times, after general operation, such treatment takes 3 to 5 days ability and removes hematoma, then pull out drainage tube.Above-mentioned all operations is all by medical personnel's manual operations, if there is the treatment of this mode of several similar client need simultaneously, not only to record injection length and also will record time of drain, due to each patient's quantity of hematoma difference, and injection of medicine time and drainage time are also different, entirely by manual operations, increase the opportunities for contamination in operating process simultaneously, greatly increased medical personnel's workload and labor intensity.
Utility model content
The purpose of this utility model is to provide a kind of and is all operated, alleviated medical personnel's the each intelligent ventricles of the brain of pollution or the perfusion and drainage system of hematoma brought of operating of the amount of labour, minimizing by medical personnel without each injection or perfusion.
For achieving the above object, this utility model has adopted following technical scheme: the perfusion and drainage system of a kind of intelligent ventricles of the brain or hematoma, comprise central processing unit, its input is connected with the outfan of keyboard circuit, its outfan is respectively with first, two stepping motor drive circuit, the input of display circuit is connected, the outfan of the first stepper motor driving circuit is connected with the first stepping motor M 1, the outfan of the second stepper motor driving circuit is respectively with second, three motor M2, M3 is connected, the first stepping motor M 1 promotes actuating device with syringe and is connected, the second stepping motor M 2 is connected with intrusion pipe switching device, the 3rd motor M3 is connected with drainage tube switching device, intrusion pipe switching device, the equal setting pressure sensor of front end of drainage tube switching device, the outfan of pressure transducer is connected with the input of central processing unit.
Described syringe promotes actuating device and comprises syringe, its needle tubing inserts the end, one end of intrusion pipe, intrusion pipe passes in intrusion pipe switching device, the lower termination drainage bag of drainage tube, drainage tube passes in drainage tube switching device, and tee T is communicated with the upper end of puncture tube, intrusion pipe, drainage tube.
The input of described central processing unit is connected with crystal oscillating circuit, described display circuit adopts liquid crystal display, the input/output terminal of described central processing unit is connected with the input/output terminal of external memory, and power circuit is respectively to liquid crystal display, crystal oscillating circuit, keyboard circuit, first, second and third stepper motor driving circuit power supply.
Described central processing unit adopts single chip computer AT 89C51, the first stepper motor driving circuit is made up of a L297 chip and a L298N chip, 33 of single chip computer AT 89C51, 34, 35, 36, 37, 38, 39 pins respectively with 10 of a L297 chip, 11, 15, 17, 18, 19, 20 pins are connected, 4 of the one L297 chip, 5, 6, 7, 8, 9 pins respectively with the IN1 of a L298N chip, IN2, IN3, IN4, ENA, ENB pin is connected, 13 of the one L297 chip, 14 pins respectively with 1 of a L298N chip, 15 pins are connected, 2 of the one L298N chip, 3 pins are connected with the first stepping motor M 1, the second stepper motor driving circuit is made up of the 2nd L297 chip and the 2nd L298N chip, 10 of single chip computer AT 89C51, 11, 12, 13, 14, 15, 16 pins respectively with 10 of the 2nd L297 chip, 11, 15, 17, 18, 19, 20 pins are connected, 4 of the 2nd L297 chip, 5, 6, 7, 8, 9 pins respectively with the IN1 of the 2nd L298N chip, IN2, IN3, IN4, ENA, ENB pin is connected, 13 of the 2nd L297 chip, 14 pins respectively with 1 of the 2nd L298N chip, 15 pins are connected, 1 of the 2nd L298N chip, 2 pins are connected with the second stepping motor M 2, 3 of the 2nd L298N chip, 4 pins are connected with the 3rd motor M3.
Described syringe is arranged on pushing plate, the first threaded rod is installed on pushing plate, threaded rod fixture is installed on the first threaded rod, the first threaded rod passes in the first threaded rod gear, the first threaded rod gear and the first stepping motor gear are connected, and the output shaft of the first motor coordinates with the first stepping motor gear.
Described intrusion pipe switching device comprises intrusion pipe sleeve, intrusion pipe passes in intrusion pipe sleeve, on one side inwall of intrusion pipe sleeve, offer the screwed hole being horizontally through for the second threaded rod, the first valve rubber is arranged on the second end, threaded rod one end, the first pressure transducer is installed on the first valve rubber, the other end of the second threaded rod passes in the second threaded rod gear, the second threaded rod gear and the second stepping motor gear are connected, and the output shaft of the second motor coordinates with the second stepping motor gear.
Described drainage tube switching device comprises drainage tube sleeve, drainage tube passes in drainage tube sleeve, on one side inwall of drainage tube sleeve, offer the screwed hole being horizontally through for the 3rd threaded rod, the second valve rubber is arranged on the 3rd end, threaded rod one end, the second pressure transducer is installed on the second valve rubber, the other end of the 3rd threaded rod passes in the 3rd threaded rod gear, the 3rd threaded rod gear and the 3rd stepping motor gear are connected, and the output shaft of the 3rd motor coordinates with the 3rd stepping motor gear.
1-8 feet, 32-39 feet of described single chip computer AT 89C51 are all connected with keyboard circuit, and described keyboard circuit is made up of button S1-S8.
As shown from the above technical solution, this utility model is by Intelligent Single-Chip Based control step motor, control perfusion and drain, can be regularly, quantitatively, constant speed intelligence regulates to the ventricles of the brain or hematoma perfusion, its drain is also timing, constant speed intelligence regulates, reach left unguarded, irrigating solution desired concn mixes up in advance, pack in syringe, in the time of perfusion, external drainage is closed condition, arrange after certain hour, external drainage automatic opening, dissolved blood or flushing liquor in the drain ventricles of the brain or hematoma, external drainage is set automatically closes after certain hour, and then carry out next cycle when automatic filling, reach without each injection or perfusion and operated by medical personnel, alleviate medical personnel's amount of labour, reduce the pollution that each operation brings.
Brief description of the drawings
Fig. 1 is circuit block diagram of the present utility model.
Fig. 2 is the circuit theory diagrams of central processing unit in Fig. 1, first and second stepper motor driving circuit.
Fig. 3 is the circuit theory diagrams of central processing unit and keyboard circuit in Fig. 1.
Fig. 4 is the structural representation that in Fig. 1, the first stepping motor M 1 and syringe promote actuating device.
Fig. 5 is the structural representation of the second stepping motor M 2 and intrusion pipe switching device in Fig. 1.
Fig. 6 is the structural representation of the 3rd motor M3 and drainage tube switching device in Fig. 1.
Fig. 7 is use schematic diagram of the present utility model.
Detailed description of the invention
The perfusion and drainage system of a kind of intelligent ventricles of the brain or hematoma, comprise central processing unit 1, its input is connected with the outfan of keyboard circuit 4, its outfan is respectively with first, two stepping motor drive circuit 2, 3, the input of display circuit is connected, the outfan of the first stepper motor driving circuit 2 is connected with the first stepping motor M 1, the outfan of the second stepper motor driving circuit 3 is respectively with second, three motor M2, M3 is connected, the first stepping motor M 1 promotes actuating device 5 with syringe and is connected, the second stepping motor M 2 is connected with intrusion pipe switching device 6, the 3rd motor M3 is connected with drainage tube switching device 7, intrusion pipe switching device 6, the equal setting pressure sensor of front end of drainage tube switching device 7, the outfan of pressure transducer is connected with the input of central processing unit 1, as shown in Figure 1, pressure transducer is for feeding back to the pressure information of intrusion pipe 27 and drainage tube 28 to comprise central processing unit 1, the instant process of adjusting motor.
As shown in Figure 7, described syringe promotes actuating device 5 and comprises syringe 9, its needle tubing inserts the end, one end of intrusion pipe 27, intrusion pipe 27 passes in intrusion pipe switching device 6, the lower termination drainage bag 30 of drainage tube 28, drainage tube 28 passes in drainage tube switching device 7, and tee T 29 is communicated with the upper end of puncture tube 31, intrusion pipe 27, drainage tube 28.Puncture tube 31 in Fig. 7 is hematoma puncture pipe, in the time operating for the ventricles of the brain, can be also ventricular puncture pipe.
As shown in Figure 1, the input of described central processing unit 1 is connected with crystal oscillating circuit, described display circuit adopts liquid crystal display, the input/output terminal of described central processing unit 1 is connected with the input/output terminal of external memory, and power circuit is respectively to liquid crystal display, crystal oscillating circuit, keyboard circuit 4, first, second and third stepper motor driving circuit power supply.All pre-set and data show is shown by liquid crystal display; Keyboard circuit 4, for inputting data, as control time etc., shows on liquid crystal display by central processing unit 1; Crystal oscillating circuit is the baud rate that central processing unit 1 is realized standard; External memory is mainly expanded the memory size of central processing unit 1.As shown in Figure 3,1-8 feet, 32-39 feet of described single chip computer AT 89C51 are all connected with keyboard circuit 4, described keyboard circuit 4 is made up of button S1-S8, keyboard circuit 4 adopts 4 × 2 matrix keyboards, single chip computer AT 89C51 converts the push button signalling detecting to digital quantity, and is shown on liquid crystal display.
As shown in Figure 2, described central processing unit 1 adopts single chip computer AT 89C51, the first stepper motor driving circuit 2 is made up of a L297 chip and a L298N chip, 33 of single chip computer AT 89C51, 34, 35, 36, 37, 38, 39 pins respectively with 10 of a L297 chip, 11, 15, 17, 18, 19, 20 pins are connected, 4 of the one L297 chip, 5, 6, 7, 8, 9 pins respectively with the IN1 of a L298N chip, IN2, IN3, IN4, ENA, ENB pin is connected, 13 of the one L297 chip, 14 pins respectively with 1 of a L298N chip, 15 pins are connected, 2 of the one L298N chip, 3 pins are connected with the first stepping motor M 1, the second stepper motor driving circuit 3 is made up of the 2nd L297 chip and the 2nd L298N chip, 10 of single chip computer AT 89C51, 11, 12, 13, 14, 15, 16 pins respectively with 10 of the 2nd L297 chip, 11, 15, 17, 18, 19, 20 pins are connected, 4 of the 2nd L297 chip, 5, 6, 7, 8, 9 pins respectively with the IN1 of the 2nd L298N chip, IN2, IN3, IN4, ENA, ENB pin is connected, 13 of the 2nd L297 chip, 14 pins respectively with 1 of the 2nd L298N chip, 15 pins are connected, 1 of the 2nd L298N chip, 2 pins are connected with the second stepping motor M 2, 3 of the 2nd L298N chip, 4 pins are connected with the 3rd motor M3.
As shown in Figure 2, single chip computer AT 89C51, L297 chip and L298N chip composition jointly control circuit, carry out drive stepping motor, as shown in Figure 2, L297 chip is step motor control integrated chip, can produce four and drive mutually signal, can be applicable to central processing unit 1 and control biphase bipolarity and four phase unipolarity motors, L298N chip is dual H-bridge formula driver, produce step-by-step impulse with L297 chip, drive biphase bi-pole stepper motor, if give control impuls of motor, it just turns a step, dial again a pulse, it can turn a step again, the interval of two pulses is shorter, it is faster that motor just turns.Adjust the pulse frequency that single chip computer AT 89C51 sends, just can carry out speed governing to motor.By pressure transducer by motor act on intrusion pipe and 27 and drainage tube 28 on pressure signal feed back to single chip computer AT 89C51, by single chip computer AT, 89C51 sends instruction, by L297 chip and L298N chip, adjust the step distance of motor, thus the optimum pressure that adjustment intrusion pipe 27 and drainage tube 28 are closed.
As shown in Figure 4, described syringe 9 is arranged on pushing plate 10, the first threaded rod 11 is installed on pushing plate 10, on the first threaded rod 11, threaded rod fixture 12 is installed, the first threaded rod 11 passes in the first threaded rod gear 13, the first threaded rod gear 13 and the first stepping motor gear 14 are connected, and the output shaft of the first stepping motor M 1 coordinates with the first stepping motor gear 14.The first stepping motor M 1 drives the first threaded rod gear 13 on the first stepping motor gear 14 and the first threaded rod 11 to rotate after receiving and driving signal, pushing plate 10 on the first threaded rod 11 moves forward thereupon, make syringe 9 inject medicine night, complete bolus infusion processes one time, threaded rod fixture 12 plays fixing and position-limiting action.
As shown in Figure 5, described intrusion pipe switching device 6 comprises intrusion pipe sleeve 15, intrusion pipe 27 passes in intrusion pipe sleeve 15, on one side inwall of intrusion pipe sleeve 15, offer the screwed hole being horizontally through for the second threaded rod 16, the first valve rubber 17 is arranged on the second threaded rod 16 ends, one end, the first pressure transducer 18 is installed on the first valve rubber 17, the other end of the second threaded rod 16 passes in the second threaded rod gear 19, the second threaded rod gear 19 and the second stepping motor gear 20 are connected, the output shaft of the second stepping motor M 2 coordinates with the second stepping motor gear 20.The second stepping motor M 2 drives the second stepping motor gear 20 and the second threaded rod gear 19 after receiving and driving signal, promoting the first valve rubber 17 presses off intrusion pipe 27, play the effect of closing, otherwise, the second stepping motor M 2 is reversed, drive the second stepping motor gear 20 and the second threaded rod gear 19, exit the first valve rubber 17 intrusion pipe 27 is unclamped, play the effect of relieving.
As shown in Figure 6, described drainage tube switching device 7 comprises drainage tube sleeve 21, drainage tube 28 passes in drainage tube sleeve 21, on one side inwall of drainage tube sleeve 21, offer the screwed hole being horizontally through for the 3rd threaded rod 22, the second valve rubber 23 is arranged on the 3rd threaded rod 22 ends, one end, the second pressure transducer 24 is installed on the second valve rubber 23, the other end of the 3rd threaded rod 22 passes in the 3rd threaded rod gear 25, the 3rd threaded rod gear 25 and the 3rd stepping motor gear 26 are connected, the output shaft of the 3rd motor M3 coordinates with the 3rd stepping motor gear 26.The 3rd motor M3 drives the 3rd stepping motor gear 26 and the 3rd threaded rod gear 25 after receiving and driving signal, promoting the second valve rubber 23 presses off drainage tube 28, play the effect of closing, otherwise, the 3rd motor M3 reversion, drive the 3rd stepping motor gear 26 and the 3rd threaded rod gear 25, exit the second valve rubber 23 drainage tube 28 is unclamped, play the effect of relieving.
In sum, this utility model is by Intelligent Single-Chip Based control step motor, control perfusion and drain, can be regularly, quantitatively, constant speed intelligence regulates to the ventricles of the brain or hematoma perfusion, its drain is also timing, constant speed intelligence regulates, reach left unguarded, irrigating solution desired concn mixes up in advance, pack in syringe, in the time of perfusion, external drainage is closed condition, arrange after certain hour, external drainage automatic opening, dissolved blood or flushing liquor in the drain ventricles of the brain or hematoma, external drainage is set automatically closes after certain hour, and then carry out next cycle when automatic filling, reach without each injection or perfusion and operated by medical personnel, alleviate medical personnel's amount of labour, reduce the pollution that each operation brings.
Claims (8)
1. the perfusion and drainage system of the intelligent ventricles of the brain or hematoma, it is characterized in that: comprise central processing unit (1), its input is connected with the outfan of keyboard circuit (4), its outfan is respectively with first, two stepping motor drive circuit (2, 3), the input of display circuit is connected, the outfan of the first stepper motor driving circuit (2) is connected with the first stepping motor M 1, the outfan of the second stepper motor driving circuit (3) is respectively with second, three motor M2, M3 is connected, the first stepping motor M 1 promotes actuating device (5) with syringe and is connected, the second stepping motor M 2 is connected with intrusion pipe switching device (6), the 3rd motor M3 is connected with drainage tube switching device (7), intrusion pipe switching device (6), the equal setting pressure sensor of front end of drainage tube switching device (7), the outfan of pressure transducer is connected with the input of central processing unit (1).
2. the perfusion and drainage system of the intelligent ventricles of the brain according to claim 1 or hematoma, it is characterized in that: described syringe promotes actuating device (5) and comprises syringe (9), its needle tubing inserts the end, one end of intrusion pipe (27), intrusion pipe (27) passes in intrusion pipe switching device (6), the lower termination drainage bag (30) of drainage tube (28), drainage tube (28) passes in drainage tube switching device (7), and tee T (29) is communicated with the upper end of puncture tube (31), intrusion pipe (27), drainage tube (28).
3. the perfusion and drainage system of the intelligent ventricles of the brain according to claim 1 or hematoma, it is characterized in that: the input of described central processing unit (1) is connected with crystal oscillating circuit, described display circuit adopts liquid crystal display, the input/output terminal of described central processing unit (1) is connected with the input/output terminal of external memory, and power circuit is respectively to liquid crystal display, crystal oscillating circuit, keyboard circuit (4), first, second and third stepper motor driving circuit power supply.
4. the perfusion and drainage system of the intelligent ventricles of the brain according to claim 1 or hematoma, it is characterized in that: described central processing unit (1) adopts single chip computer AT 89C51, the first stepper motor driving circuit (2) is made up of a L297 chip and a L298N chip, 33 of single chip computer AT 89C51, 34, 35, 36, 37, 38, 39 pins respectively with 10 of a L297 chip, 11, 15, 17, 18, 19, 20 pins are connected, 4 of the one L297 chip, 5, 6, 7, 8, 9 pins respectively with the IN1 of a L298N chip, IN2, IN3, IN4, ENA, ENB pin is connected, 13 of the one L297 chip, 14 pins respectively with 1 of a L298N chip, 15 pins are connected, 2 of the one L298N chip, 3 pins are connected with the first stepping motor M 1, the second stepper motor driving circuit (3) is made up of the 2nd L297 chip and the 2nd L298N chip, 10 of single chip computer AT 89C51, 11, 12, 13, 14, 15, 16 pins respectively with 10 of the 2nd L297 chip, 11, 15, 17, 18, 19, 20 pins are connected, 4 of the 2nd L297 chip, 5, 6, 7, 8, 9 pins respectively with the IN1 of the 2nd L298N chip, IN2, IN3, IN4, ENA, ENB pin is connected, 13 of the 2nd L297 chip, 14 pins respectively with 1 of the 2nd L298N chip, 15 pins are connected, 1 of the 2nd L298N chip, 2 pins are connected with the second stepping motor M 2, 3 of the 2nd L298N chip, 4 pins are connected with the 3rd motor M3.
5. the perfusion and drainage system of the intelligent ventricles of the brain according to claim 2 or hematoma, it is characterized in that: described syringe (9) is arranged on pushing plate (10), upper the first threaded rod (11) of installing of pushing plate (10), the upper threaded rod fixture (12) of installing of the first threaded rod (11), the first threaded rod (11) passes in the first threaded rod gear (13), the first threaded rod gear (13) is connected with the first stepping motor gear (14), and the output shaft of the first stepping motor M 1 coordinates with the first stepping motor gear (14).
6. the perfusion and drainage system of the intelligent ventricles of the brain according to claim 2 or hematoma, it is characterized in that: described intrusion pipe switching device (6) comprises intrusion pipe sleeve (15), intrusion pipe (27) passes in intrusion pipe sleeve (15), on one side inwall of intrusion pipe sleeve (15), offer the screwed hole being horizontally through for the second threaded rod (16), the first valve rubber (17) is arranged on the second threaded rod (16) end, one end, upper the first pressure transducer (18) of installing of the first valve rubber (17), the other end of the second threaded rod (16) passes in the second threaded rod gear (19), the second threaded rod gear (19) is connected with the second stepping motor gear (20), the output shaft of the second stepping motor M 2 coordinates with the second stepping motor gear (20).
7. the perfusion and drainage system of the intelligent ventricles of the brain according to claim 2 or hematoma, it is characterized in that: described drainage tube switching device (7) comprises drainage tube sleeve (21), drainage tube (28) passes in drainage tube sleeve (21), on one side inwall of drainage tube sleeve (21), offer the screwed hole being horizontally through for the 3rd threaded rod (22), the second valve rubber (23) is arranged on the 3rd threaded rod (22) end, one end, upper the second pressure transducer (24) of installing of the second valve rubber (23), the other end of the 3rd threaded rod (22) passes in the 3rd threaded rod gear (25), the 3rd threaded rod gear (25) is connected with the 3rd stepping motor gear (26), the output shaft of the 3rd motor M3 coordinates with the 3rd stepping motor gear (26).
8. the perfusion and drainage system of the intelligent ventricles of the brain according to claim 4 or hematoma, is characterized in that: 1-8 feet, 32-39 feet of described single chip computer AT 89C51 are all connected with keyboard circuit (4), and described keyboard circuit (4) is made up of button S1-S8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420328589.3U CN203971016U (en) | 2014-06-19 | 2014-06-19 | The perfusion and drainage system of the intelligence ventricles of the brain or hematoma |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420328589.3U CN203971016U (en) | 2014-06-19 | 2014-06-19 | The perfusion and drainage system of the intelligence ventricles of the brain or hematoma |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203971016U true CN203971016U (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420328589.3U Withdrawn - After Issue CN203971016U (en) | 2014-06-19 | 2014-06-19 | The perfusion and drainage system of the intelligence ventricles of the brain or hematoma |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203971016U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014007A (en) * | 2014-06-19 | 2014-09-03 | 朱成 | Intelligent infusion and drainage system for cerebral ventricle or hematomas |
| CN109793949A (en) * | 2019-03-25 | 2019-05-24 | 李少莲 | Ventricular drainage control device |
-
2014
- 2014-06-19 CN CN201420328589.3U patent/CN203971016U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014007A (en) * | 2014-06-19 | 2014-09-03 | 朱成 | Intelligent infusion and drainage system for cerebral ventricle or hematomas |
| CN104014007B (en) * | 2014-06-19 | 2017-03-29 | 朱成 | The perfusion and drainage system of the intelligent ventricles of the brain or hematoma |
| CN109793949A (en) * | 2019-03-25 | 2019-05-24 | 李少莲 | Ventricular drainage control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141203 Effective date of abandoning: 20170329 |