CN111282048A - Automatic suction tube - Google Patents
Automatic suction tube Download PDFInfo
- Publication number
- CN111282048A CN111282048A CN202010140190.2A CN202010140190A CN111282048A CN 111282048 A CN111282048 A CN 111282048A CN 202010140190 A CN202010140190 A CN 202010140190A CN 111282048 A CN111282048 A CN 111282048A
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- CN
- China
- Prior art keywords
- relay
- conductor
- negative pressure
- suction device
- pair
- 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
Links
- 239000004020 conductor Substances 0.000 claims abstract description 43
- 239000007788 liquid Substances 0.000 abstract description 8
- 206010036790 Productive cough Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 210000004051 gastric juice Anatomy 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003296 saliva Anatomy 0.000 description 1
- 210000003802 sputum Anatomy 0.000 description 1
- 208000024794 sputum Diseases 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
Images
Classifications
-
- A61M1/0023—
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/74—Suction control
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/84—Drainage tubes; Aspiration tips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3327—Measuring
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgery (AREA)
- External Artificial Organs (AREA)
Abstract
The invention discloses an automatic suction tube, which comprises a suction tube body and a negative pressure suction device, wherein the suction tube body is connected with the negative pressure suction device, a suction port of the suction tube body is provided with a conductor A and a conductor B, a gap is reserved between the conductor A and the conductor B, the conductor A and the conductor B are electrically connected with a control module, and the control module is used for controlling the opening of the negative pressure suction device according to the resistance value between the conductor A and the conductor B. The invention can automatically detect whether liquid is at the suction opening and automatically suck, thereby reducing blind suction and reducing the working strength of medical staff.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to an automatic suction tube.
Background
The existing suction tubes start suction operation by manually opening a negative pressure suction device thereof, and for patients lying in bed for a long time, medical personnel needs to frequently observe the condition of the patients and manually open the negative pressure suction device.
Disclosure of Invention
The invention aims to provide an automatic suction tube which can automatically detect whether liquid exists at a suction port and can automatically suck; thereby reducing blind attraction and reducing the working strength of medical staff.
Since air is a common insulator, human tissue is much more resistive than liquid (sputum, gastric juice, blood, saliva, urine, etc.), which is electrically conductive or less resistive, there are only three possibilities between conductors a and B when the blind end of the suction tube penetrates into the corresponding lumen: air, liquid and tissue, which are characterized by electrical resistance as above, are usually air or liquid, and occasionally tissue. The three types of resistance ranges of the application position are detected in a manual mode, corresponding resistance values are set, and whether liquid needs to be sucked or not is detected in a resistance detection mode. Specifically, in order to achieve the purpose, the invention is realized by adopting the following technical scheme:
the invention discloses an automatic suction tube, which comprises a suction tube body and a negative pressure suction device, wherein the suction tube body is connected with the negative pressure suction device, a suction port of the suction tube body is provided with a conductor A and a conductor B, a gap is reserved between the conductor A and the conductor B, the conductor A and the conductor B are electrically connected with a control module, and the control module is used for controlling the opening of the negative pressure suction device according to the resistance value between the conductor A and the conductor B.
Preferably, the control module includes a voltage comparison unit a and a voltage comparison unit B, the conductor B is connected to the equidirectional input end of the voltage comparison unit B and one end of the resistor R3, one end of the resistor R4 is connected to the inverted input end of the voltage comparison unit B and one end of the potentiometer RW2, one end of the resistor R1 is connected to the equidirectional input end of the voltage comparison unit a and one end of the potentiometer RW3, one end of the resistor R2 is connected to the inverted input end of the voltage comparison unit a and one end of the potentiometer RW1, the other ends of the conductor a, the resistor R4, the resistor R1 and the resistor R2 are connected to the positive output end of the dc power supply, and the other ends of the potentiometer RW1, the potentiometer RW2, the potentiometer 3 and the resistor R3 are connected to the ground terminal of the dc power supply; the output end of the voltage comparison unit A and the output end of the voltage comparison unit B are respectively connected with two input ends of an AND gate, and the output end of the AND gate is used for controlling the opening of the negative pressure suction device.
Preferably, the output end of the and gate is connected with the input end of a driving gate U4, the output end of the driving gate U4 is connected with one end of a coil of a relay K1, the other end of the coil of the relay K1 is connected with the ground end of a direct current power supply, and a pair of normally open contacts of the relay K1 is used for controlling the opening of the negative pressure suction device.
Preferably, one end of the pair of normally open contacts of the relay K1 is connected to the positive output end of the dc power supply, the other end of the pair of normally open contacts of the relay K1 is connected to one end of the coil of the relay K2, the other end of the coil of the relay K2 is connected to the ground end of the dc power supply, one end of the pair of normally open contacts of the relay K2 is connected to one end of the motor of the negative pressure suction device, the other end of the pair of normally open contacts of the relay K2 is connected to one end of the working power supply of the negative pressure suction device, and the other end of the motor.
Furthermore, the invention also comprises a digital timer, wherein the output end of the digital timer is connected with the input end of the driving gate U2, the output end of the driving gate U2 is connected with one end of a pair of normally closed contacts of the relay K1, and the other end of the pair of normally closed contacts of the relay K1 is connected with one end of a coil of the relay K2.
Furthermore, the invention also comprises a manual start key SA1, wherein a pair of normally open contacts of the manual start key SA1 are connected in parallel with a pair of normally open contacts of the relay K2, and a pair of normally closed contacts of the manual stop key SA2 are connected in series in a circuit in which one end of the pair of normally open contacts of the relay K2 is connected with one end of the motor of the negative pressure suction device.
Furthermore, a fuse is also connected in series in a line connecting one end of the pair of normally open contacts of the relay K2 with one end of the motor of the negative pressure suction device.
Furthermore, a coil of the relay K1 and a coil of the relay K2 are connected in parallel with a freewheeling diode.
Preferably, the direct current power supply is +12V, and the working power supply of the motor of the negative pressure suction device is mains supply.
Preferably, the voltage comparing unit a and the voltage comparing unit B are two voltage comparing units of the same voltage comparator LM 339.
The working principle of the invention is as follows: and controlling whether the suction tube performs suction operation or not by detecting the resistance value between the two electric conductors A and B at the suction port. Specifically, the method comprises the following control modes:
1. when the resistance between the two conductors A and B is within the required range, the coil of the relay k1 is driven by the driving module, the relay k1 acts, and the normally open contact is closed and the normally closed contact is opened.
2. The digital timer is output to the drive module U2, if the drive module part has no output, the normally closed contact of the relay k1 is closed, and the relay k2 is controlled by the digital timer; if there is an output from the first section at this time, relay k1 normally closes the contacts and opens, and relay k2 is controlled by the drive module section at this time.
3. When the manual starting button is closed, the load is controlled by the manual control starting button and the normally open contact of the relay 2 together, when the manual closing button is pressed, the main circuit of the motor of the negative pressure suction device is disconnected, and the priority of manual closing is highest.
The invention has the beneficial effects that:
1. the invention can automatically detect whether liquid exists at the suction opening and can automatically suck the liquid; thereby reducing blind attraction and reducing the working strength of medical staff.
2. The invention has high automation degree and simple and reliable structure.
3. The invention can be directly attached to the existing suction device, and is convenient to transform.
4. The invention is provided with a manual control key, and the original operation mode of the existing suction device can be adopted under special conditions.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an electrical schematic of the control module;
in the figure: 100-a suction tube body, 101-a conductor A, 102-a conductor B, 103-a suction port, 200-a control module and 300-a negative pressure suction device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the automatic suction tube disclosed by the present invention comprises a suction tube body 100 and a negative pressure suction device 300, wherein the suction tube body 100 is connected with the negative pressure suction device 300, a suction port 103 of the suction tube body is provided with a conductor a101 and a conductor B102, a gap is formed between the conductor a101 and the conductor B102, the conductor a101 and the conductor B102 are electrically connected with a control module 200, and the control module 200 is used for controlling the opening of the negative pressure suction device 300 according to the resistance value between the conductor a101 and the conductor B102.
As shown in fig. 2, the control module 200 includes a voltage comparing unit a and a voltage comparing unit B, where the voltage comparing unit a and the voltage comparing unit B are two voltage comparing units U1_ a and U1_ B of the same voltage comparator U1, and the voltage comparator U1 adopts LM 339; the conductor B102 is connected with the equidirectional input end of the voltage comparison unit B and one end of the resistor R3, one end of the resistor R4 is connected with the reverse input end of the voltage comparison unit B and one end of the potentiometer RW2, one end of the resistor R1 is connected with the equidirectional input end of the voltage comparison unit A and one end of the potentiometer RW3, one end of the resistor R2 is connected with the reverse input end of the voltage comparison unit A and one end of the potentiometer RW1, the other ends of the conductor A, the resistor R4, the resistor R1 and the resistor R2 are connected with the positive output end of the direct-current power supply, and the other ends of the potentiometer RW1, the potentiometer RW2, the potentiometer RW3 and the resistor R3 are connected with the ground end of the direct-current power supply; the output end of the voltage comparison unit A and the output end of the voltage comparison unit B are respectively connected with two input ends of an AND gate U3, the output end of the AND gate U3 is connected with the input end of a driving gate U4, the output end of the driving gate U4 is connected with one end of a coil of a relay K1, the other end of the coil of the relay K1 is connected with the grounding end of a direct current power supply, one end of a pair of normally open contacts of the relay K1 is connected with the positive output end of the direct current power supply, the other end of the pair of normally open contacts is connected with one end of a coil of a relay K59, the other end of the coil of the relay K2 is connected with the grounding end of the direct current power supply, one end of a pair of normally open contacts of the relay K2 is connected with one end of the motor of the negative pressure suction device, the other end of a pair of normally open contacts of the relay K2 is connected with one end of the working power supply of the negative pressure suction device 300, and the other end of the motor M1 of the negative pressure suction device 300 is connected with the other end of the working power supply of the negative pressure suction device. A fuse FU1 is also connected in series to a line connecting one end of the pair of normally open contacts of the relay K2 to one end of the motor M1 of the negative pressure suction device 300, a freewheeling diode D1 is connected in parallel to a coil of the relay K1, and a freewheeling diode D2F is connected in parallel to a coil of the relay K2. The dc power supply is +12V, and the working power supply of the motor M1 of the negative pressure suction device 300 is commercial power of ac 220V.
The invention also comprises a digital timer, wherein the output end of the digital timer is connected with the input end of the driving gate U2, the output end of the driving gate U2 is connected with one end of a pair of normally closed contacts of the relay K1, and the other end of the pair of normally closed contacts of the relay K1 is connected with one end of a coil of the relay K2.
The invention also comprises a manual start key SA1, a pair of normally open contacts of a manual control key SA1 are connected in parallel with a pair of normally open contacts of a relay K2, and a pair of normally closed contacts of a manual stop key SA2 are connected in series in a circuit in which one end of the pair of normally open contacts of the relay K2 is connected with one end of a motor M1 of the negative pressure suction device 300.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. Automatic attract pipe, including attracting pipe body and negative pressure suction device, attract pipe body connection negative pressure suction device, its characterized in that: the suction tube is characterized in that a conductor A and a conductor B are arranged on a suction port of the suction tube body, a gap is reserved between the conductor A and the conductor B, the conductor A and the conductor B are electrically connected with a control module, and the control module is used for controlling the opening of the negative pressure suction device according to the resistance value between the conductor A and the conductor B.
2. The automatic suction tube of claim 1, wherein: the control module comprises a voltage comparison unit A and a voltage comparison unit B, wherein a conductor B is connected with a same-direction input end of the voltage comparison unit B and one end of a resistor R3, one end of a resistor R4 is connected with a reverse input end of the voltage comparison unit B and one end of a potentiometer RW2, one end of a resistor R1 is connected with a same-direction input end of the voltage comparison unit A and one end of a potentiometer RW3, one end of a resistor R2 is connected with a reverse input end of the voltage comparison unit A and one end of a potentiometer RW1, the other ends of the conductor A, the resistor R4, the resistor R1 and the resistor R2 are connected with a positive output end of a direct-current power supply, and the other ends of the potentiometer 1, the potentiometer RW2, the potentiometer RW3 and the resistor R3 are connected with a ground end of the direct-current power supply; the output end of the voltage comparison unit A and the output end of the voltage comparison unit B are respectively connected with two input ends of an AND gate, and the output end of the AND gate is used for controlling the opening of the negative pressure suction device.
3. The automatic suction tube of claim 2, wherein: the output end of the AND gate is connected with the input end of a driving gate U4, the output end of the driving gate U4 is connected with one end of a coil of a relay K1, the other end of the coil of the relay K1 is connected with the grounding end of a direct-current power supply, and a pair of normally open contacts of the relay K1 is used for controlling the opening of the negative pressure suction device.
4. The automatic suction tube of claim 3, wherein: the one end of a pair of normally open contact of relay K1 is connected DC power supply's positive output end, and the one end of relay K2's coil is connected to the other end, DC power supply's earthing terminal is connected to the other end of relay K2's coil, and the one end of the motor of negative pressure suction device is connected to the one end of a pair of normally open contact of relay K2, and the one end of the working power supply of negative pressure suction device is connected to the other end of a pair of normally open contact of relay K2, and the other end of the working power supply of negative pressure suction device is connected to the other end of.
5. The automatic suction tube of claim 4, wherein: the digital timer is characterized by further comprising a digital timer, wherein the output end of the digital timer is connected with the input end of the driving door U2, the output end of the driving door U2 is connected with one end of a pair of normally closed contacts of the relay K1, and the other end of the pair of normally closed contacts of the relay K1 is connected with one end of a coil of the relay K2.
6. The automatic suction tube according to claim 4 or 5, wherein: the vacuum suction device further comprises a manual starting key SA1 and a manual stopping key SA2, a normally open contact of the manual control key SA1 is connected with a pair of normally open contacts of the relay K2 in parallel, and a pair of normally closed contacts of the manual stopping key SA2 are connected in series in a circuit, wherein one end of the pair of normally open contacts of the relay K2 is connected with one end of a motor of the negative pressure suction device.
7. The automatic suction tube of claim 6, wherein: and a fuse is also connected in series in a circuit of one end of the pair of normally open contacts of the relay K2, which is connected with one end of the motor of the negative pressure suction device.
8. The automatic suction tube of claim 6, wherein: and a coil of the relay K1 and a coil of the relay K2 are connected with a freewheeling diode in parallel.
9. The automatic suction tube of claim 6, wherein: the direct current power supply is +12V, and the working power supply of the motor of the negative pressure suction device is commercial power.
10. The automatic suction tube of claim 1, wherein: the voltage comparison unit A and the voltage comparison unit B are two voltage comparison units of the same voltage comparator LM 339.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010140190.2A CN111282048A (en) | 2020-03-03 | 2020-03-03 | Automatic suction tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010140190.2A CN111282048A (en) | 2020-03-03 | 2020-03-03 | Automatic suction tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111282048A true CN111282048A (en) | 2020-06-16 |
Family
ID=71025807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010140190.2A Pending CN111282048A (en) | 2020-03-03 | 2020-03-03 | Automatic suction tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111282048A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2371202A1 (en) * | 1976-11-23 | 1978-06-16 | Anvar | Logic controlled blood pump - has cannula with liq. detector and pressure monitor operating pump within safe limits |
| US4531939A (en) * | 1979-10-12 | 1985-07-30 | Kimura Bed Mfg. Company Limited | Vacuum suction type urinating aid |
| CN2672331Y (en) * | 2003-05-08 | 2005-01-19 | 陈晓冰 | Electric fan |
| CN2698379Y (en) * | 2004-04-13 | 2005-05-11 | 闵远清 | Medical intelligent digit control drainage device |
| CN101977573A (en) * | 2008-02-14 | 2011-02-16 | 尤妮佳股份有限公司 | Automatic urine disposal apparatus |
| US20110060300A1 (en) * | 2007-08-17 | 2011-03-10 | Conva Tec Technologies Inc. | Aspiration system for removing liquid discharged by the body, and liquid sensor therefor |
| CN103301514A (en) * | 2013-06-22 | 2013-09-18 | 李昭 | Multifunctional indwelling urethral catheterization device |
| US20160045698A1 (en) * | 2014-08-14 | 2016-02-18 | Jagdish Chaturvedi | Systems for automatically removing fluid from multiple regions of a respiratory tract |
| CN206517650U (en) * | 2017-02-21 | 2017-09-22 | 南京大学建筑规划设计研究院有限公司 | One kind has personnel playground ultraviolet lamp control module |
| RU190374U1 (en) * | 2018-12-20 | 2019-06-28 | Дмитрий Васильевич Белик | Wearable device for drainage of human body cavities in the postoperative period with an impedance control system for the presence of exudate |
| CN209187695U (en) * | 2018-11-11 | 2019-08-02 | 陈宇 | A kind of negative pressure device of dual-mode |
-
2020
- 2020-03-03 CN CN202010140190.2A patent/CN111282048A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2371202A1 (en) * | 1976-11-23 | 1978-06-16 | Anvar | Logic controlled blood pump - has cannula with liq. detector and pressure monitor operating pump within safe limits |
| US4531939A (en) * | 1979-10-12 | 1985-07-30 | Kimura Bed Mfg. Company Limited | Vacuum suction type urinating aid |
| CN2672331Y (en) * | 2003-05-08 | 2005-01-19 | 陈晓冰 | Electric fan |
| CN2698379Y (en) * | 2004-04-13 | 2005-05-11 | 闵远清 | Medical intelligent digit control drainage device |
| US20110060300A1 (en) * | 2007-08-17 | 2011-03-10 | Conva Tec Technologies Inc. | Aspiration system for removing liquid discharged by the body, and liquid sensor therefor |
| CN101977573A (en) * | 2008-02-14 | 2011-02-16 | 尤妮佳股份有限公司 | Automatic urine disposal apparatus |
| CN103301514A (en) * | 2013-06-22 | 2013-09-18 | 李昭 | Multifunctional indwelling urethral catheterization device |
| US20160045698A1 (en) * | 2014-08-14 | 2016-02-18 | Jagdish Chaturvedi | Systems for automatically removing fluid from multiple regions of a respiratory tract |
| CN206517650U (en) * | 2017-02-21 | 2017-09-22 | 南京大学建筑规划设计研究院有限公司 | One kind has personnel playground ultraviolet lamp control module |
| CN209187695U (en) * | 2018-11-11 | 2019-08-02 | 陈宇 | A kind of negative pressure device of dual-mode |
| RU190374U1 (en) * | 2018-12-20 | 2019-06-28 | Дмитрий Васильевич Белик | Wearable device for drainage of human body cavities in the postoperative period with an impedance control system for the presence of exudate |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20200616 |