CN117281963A - State self-testing negative pressure drainage device - Google Patents
State self-testing negative pressure drainage device Download PDFInfo
- Publication number
- CN117281963A CN117281963A CN202311055015.3A CN202311055015A CN117281963A CN 117281963 A CN117281963 A CN 117281963A CN 202311055015 A CN202311055015 A CN 202311055015A CN 117281963 A CN117281963 A CN 117281963A
- Authority
- CN
- China
- Prior art keywords
- negative pressure
- drainage
- end cover
- resistor
- cavity
- 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.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims description 14
- 238000012544 monitoring process Methods 0.000 claims abstract description 49
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 claims description 23
- 230000008447 perception Effects 0.000 claims description 16
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- 239000003086 colorant Substances 0.000 claims description 8
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 abstract description 29
- 239000007788 liquid Substances 0.000 description 16
- 238000003745 diagnosis Methods 0.000 description 9
- 230000002349 favourable effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 201000010099 disease Diseases 0.000 description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000029663 wound healing Effects 0.000 description 1
Classifications
-
- 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
- A61M1/73—Suction drainage systems comprising sensors or indicators for physical values
-
- 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
- A61M1/73—Suction drainage systems comprising sensors or indicators for physical values
- A61M1/732—Visual indicating means for vacuum pressure
-
- 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
- A61M1/80—Suction pumps
- A61M1/82—Membrane pumps, e.g. bulbs
-
- 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
- A61M2205/18—General characteristics of the apparatus with alarm
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (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)
- Measuring Fluid Pressure (AREA)
Abstract
The monitoring mechanism consists of a main connecting block, a diaphragm fixing ring, a left end cover, a right end cover, a negative pressure sensing diaphragm, a strain gauge, a PCBA board and an upper connecting joint and a lower connecting joint; the main connecting block is internally provided with a containing cavity; the negative pressure sensing diaphragm is arranged in the center of the accommodating cavity through a diaphragm fixing ring; the left end cover and the right end cover are respectively sealed at two ends of the accommodating cavity; the strain gauge is connected to the center of the negative pressure sensing diaphragm; the PCBA plate is arranged in the left cavity, is fixedly arranged on the right side surface of the left end cover and is used for sensing the negative pressure value condition of the right cavity according to the deformation of the strain gauge; the upper and lower connecting joints are respectively and fixedly connected to the upper and lower ends of the main connecting block, the right parts of the upper and lower connecting joints are respectively provided with an upper and lower drainage channel, and the upper and lower connecting joints are respectively connected with the upper end cover and the drainage sphere through threaded fit; the lower end of the drainage catheter is fixedly connected with the upper end of the upper end cover. The device can monitor the negative pressure state in the drainage sphere in real time.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to a state self-testing negative pressure drainage device.
Background
The negative pressure drainage ball is often used with the drainage tube in a matched mode, and the negative pressure drainage ball is pressed in advance to discharge air in the ball so that the interior of the ball is in a negative pressure state, so that effusion, effusion and the like of an operation part can be timely sucked out of the body by utilizing negative pressure, and the negative pressure drainage ball has important significance in promoting wound healing, reducing infection risk, relieving pain of patients, promoting postoperative recovery and the like. At present, medical staff usually judge the state of the negative pressure drainage ball through an intuitive observation method, when the negative pressure drainage ball is about to bulge, the negative pressure state in the negative pressure drainage ball is weakened, and the drainage effect is about to be lost, and at the moment, liquid in the negative pressure drainage ball needs to be emptied in time through an extrusion or extraction method. However, in the actual use process, the condition that the liquid in the negative pressure drainage ball is emptied in time often occurs, and the workload of medical staff is necessarily increased when the liquid in the negative pressure drainage ball is emptied too frequently.
In addition, even if some negative pressure flow balls are in a hollow state, the negative pressure flow balls cannot rebound automatically due to excessive extrusion, oxidization and the like in the long-term use process, so that the negative pressure flow balls cannot be in a negative pressure state, and the flow guiding function of the negative pressure flow balls is invalid at the moment, but the hollow state easily causes great interference to timely and effective diagnosis and treatment of patients for medical staff. Therefore, the key of ensuring the normal operation of the negative pressure drainage ball is to ensure that the inside of the negative pressure drainage ball is always in a negative pressure state. Therefore, a state self-testing negative pressure drainage device capable of monitoring the negative pressure state in the drainage sphere in real time is provided, so that timely and effective diagnosis and treatment operation can be provided for patients.
Disclosure of Invention
In order to solve the problems, the invention provides a state self-testing negative pressure drainage device which is reasonable in structure, can monitor the negative pressure state in the drainage sphere in real time, can help to intuitively display the negative pressure state in the drainage sphere, is beneficial to reducing the labor load of medical staff, and can effectively ensure that the medical staff can provide timely and effective diagnosis and treatment for patients.
In order to achieve the aim of the invention, the invention provides a state self-testing negative pressure drainage device which comprises a drainage sphere, a monitoring mechanism, an upper end cover and a drainage catheter;
the drainage ball body is made of elastic materials, the upper end of the drainage ball body is provided with an opening, and the outer side of the upper opening end is provided with an external thread structure I; the monitoring mechanism consists of a main connecting block, a diaphragm fixing ring, a left end cover, a right end cover, a negative pressure sensing diaphragm, a strain gauge, a PCBA board, an upper connecting joint and a lower connecting joint; the inside of the main connecting block body is provided with a transversely extending accommodating cavity, a left opening communicated with the accommodating cavity is formed in the left end, and a right opening communicated with the accommodating cavity is formed in the right end; the shape and the size of the diaphragm fixing ring are matched with those of the accommodating cavity, the diaphragm fixing ring is arranged in the central area of the accommodating cavity, and the outer end edge of the diaphragm fixing ring is fixedly connected with the main connecting block; the shape and the size of the left end cover are matched with those of the left opening, the left end cover is fixedly packaged at the left opening of the main connecting block, and a through hole is formed in the left end cover; the shape and the size of the right end cover are matched with those of the right opening, and the right end cover is fixedly packaged at the right opening of the main connecting block; the shape and the size of the negative pressure sensing diaphragm are matched with those of the accommodating cavity, the negative pressure sensing diaphragm is arranged in the center of the accommodating cavity, the outer end edge of the negative pressure sensing diaphragm is fixedly connected with the diaphragm fixing ring, the accommodating cavity is isolated into a left cavity and a right cavity by matching with the left end cover and the right end cover, the left cavity is communicated with the outside atmosphere through a through hole, and the right cavity is of a sealing structure; the strain gauge is fixedly connected to the central area of the negative pressure sensing diaphragm; the PCBA board is arranged in the left cavity and fixedly arranged on the right side surface of the left end cover; the PCBA board is provided with a perception monitoring circuit unit, an indicator lamp and a buzzer are arranged in the perception monitoring circuit unit, the indicator lamp is arranged corresponding to the through hole, the perception monitoring circuit unit is connected with the strain gauge and is used for perceiving the magnitude of the negative pressure value of the right cavity according to the magnitude of the deformation of the strain gauge, giving light indications of different colors according to the magnitude of the negative pressure value and giving an alarm when the negative pressure value cannot meet the normal work;
the upper connecting joint is fixedly connected to the upper end of the main connecting block, an external thread structure II is formed in the outer side of the upper end of the upper connecting joint, an upper drainage channel which is communicated with the right cavity and the outside is vertically formed in the right side part, the lower connecting joint is fixedly connected to the lower end of the main connecting block, a containing groove I is formed in the inner side of the lower part of the lower connecting joint, a lower drainage channel which is communicated with the right cavity and the containing groove I is vertically formed in the right side part, the shape and the size of the containing groove I are matched with the shape and the size of the upper opening end of the drainage sphere, and an internal thread structure I is formed in the position corresponding to the external thread structure I; the lower connecting joint is fixedly sleeved outside the upper opening end of the drainage sphere through the threaded fit between the first internal thread structure and the first external thread structure;
the inner side of the lower part of the upper end cover is provided with a second accommodating groove, the shape and the size of the second accommodating groove are matched with those of the upper end part of the upper connecting joint, an inner thread structure II is arranged at a position corresponding to the outer thread structure II, and the upper end cover is fixedly sleeved on the outer side of the upper end part of the upper connecting joint through the threaded fit between the inner thread structure II and the outer thread structure II;
the drainage catheter is vertically arranged, the lower end of the drainage catheter is fixedly connected with the upper end central area of the upper end cover, and the drainage catheter is communicated with the accommodating groove.
Further, the number of the through holes on the left end cover is four, namely a switch hole and three lamp holes; the sensing monitoring circuit unit is also provided with a toggle switch, one end of the toggle switch is arranged on the left side surface of the PCBA board, the other end of the toggle switch penetrates out to the outside through a switch hole, and a gap is reserved between the toggle switch and the switch hole; the number of the indicator lamps is three, namely a green LED indicator lamp, a yellow LED indicator lamp and a red LED indicator lamp, and the indicator lamps are all arranged on the left side surface of the PCBA board; the three indicator lamps are arranged in the three lamp holes in a one-to-one correspondence manner, and gaps are reserved between the indicator lamps and the corresponding lamp holes. Through setting up toggle switch in perception monitoring circuit unit to make it wear out the outside of monitoring mechanism through the switch hole of seting up on the left end cover, can conveniently control the beginning and the end process of monitoring operation. Through setting up green LED pilot lamp, yellow LED pilot lamp and red LED pilot lamp in the perception monitoring circuit unit to make it install respectively in three lamp holes, so, can be convenient for give the light indication of different colours under the different states of negative pressure value, thereby be convenient for judge directly perceivedly through light and lead spheroidal negative pressure state.
Further, in order to realize effective monitoring of the negative pressure state, the sensing and monitoring circuit unit further comprises a resistor R1, a resistor R2, a resistor R3, an amplifying circuit, an MCU module, a voltage stabilizing circuit, a storage battery pack, an LED driving circuit and a buzzer driving circuit;
the resistance of the strain gauge, the resistance of the resistor R1, the resistance of the resistor R2 and the resistance of the resistor R3 are the same, the first end of the strain gauge is connected with the first end of the resistor R1, the second end of the strain gauge is connected with the first end of the resistor R3, the second end of the resistor R3 is connected with the first end of the resistor R2, the second end of the resistor R2 is connected with the second end of the resistor R1, the strain gauge, the resistor R1, the resistor R2 and the resistor R3 form a Wheatstone bridge, a connection node between the second end of the strain gauge and the first end of the resistor R3 forms a first power supply access end of the Wheatstone bridge, a connection node between the second end of the resistor R2 and the second end of the resistor R1 forms a first output end of the Wheatstone bridge, and a connection node between the second end of the resistor R3 and the first end of the resistor R2 forms a second output end of the Wheatstone bridge;
the first input end of the amplifying circuit is connected with the first output end of the Wheatstone bridge, and the second input end of the amplifying circuit is connected with the second output end of the Wheatstone bridge;
the input end of the MCU module is connected with the output end of the amplifying circuit;
the input end of the voltage stabilizing circuit is connected with the anode of the storage battery pack through a toggle switch, and the output end of the voltage stabilizing circuit is respectively connected with the first power supply access end of the MCU module, the first power supply access end of the Wheatstone bridge and the first power supply access end of the amplifying circuit;
the storage battery pack is arranged on the PCBA board, the negative electrode of the storage battery pack is grounded, and the storage battery pack is respectively connected with the second power supply access end of the MCU module, the second power supply access end of the amplifying circuit and the second power supply access end of the Wheatstone bridge;
the first input end, the second input end and the third input end of the LED driving circuit are respectively connected with the first output end, the second output end and the third output end of the MCU module;
the green LED indicator lamp, the yellow LED indicator lamp and the red LED indicator lamp are all light-emitting diodes, the positive electrode of the green LED indicator lamp is connected with the first output end of the LED driving circuit, the positive electrode of the yellow LED indicator lamp is connected with the second output end of the LED driving circuit, the positive electrode of the red LED indicator lamp is connected with the third output end of the LED driving circuit, and the negative electrode of the green LED indicator lamp, the negative electrode of the yellow LED indicator lamp and the negative electrode of the red LED indicator lamp are grounded;
the input end of the buzzer driving circuit is connected with the fourth output end of the MCU module, the output end of the buzzer driving circuit is connected with the first power supply access end of the buzzer, and the second power supply access end of the buzzer is grounded; the buzzer is arranged on the PCBA board.
The right side of left end cover is last fixedly connected with transversely extending's erection column, the screw hole has been seted up at the center of erection column, the mounting hole has been seted up on the PCBA board in the position that corresponds the erection column, set screw pass behind the mounting hole through screw-thread fit connect in the screw hole, with PCBA board and left end cover fixed connection.
Preferably, the left end cover is fixedly connected with the main connecting block, the right end cover is fixedly connected with the main connecting block, the diaphragm fixing ring is fixedly connected with the negative pressure sensing diaphragm, and the strain gauge is fixedly connected with the negative pressure sensing diaphragm in a cementing manner.
Preferably, the longitudinal section of the accommodating cavity is circular.
Further, in order to better fix the outer end edge portion of the negative pressure sensing diaphragm, which is located at the left side of the diaphragm fixing ring, when the negative pressure sensing diaphragm is deformed to the right side due to the negative pressure of the right cavity.
Further, in order to be able to directly assemble the upper end cover outside the upper opening end of the drainage sphere under the condition that the monitoring mechanism is malfunctioning, so as to effectively cope with the emergency diagnosis and treatment situation, the shape and the size of the accommodating groove II are matched with those of the upper opening end of the drainage sphere, and the internal thread structure II is matched with the external thread structure I.
According to the invention, the middle part of the main connecting block body is provided with the accommodating cavity, the left end and the right end are respectively provided with the left opening and the right opening, and meanwhile, the left end cover and the right end cover are respectively packaged at the left opening and the right opening, so that a device for detecting negative pressure can be conveniently installed in the accommodating cavity, and meanwhile, the device in the accommodating cavity can be conveniently maintained. The diaphragm fixing ring is fixedly connected to the central area of the accommodating cavity, so that the negative pressure sensing diaphragm is conveniently fixed to the central area of the accommodating cavity by the diaphragm fixing ring, the outer end edge of the negative pressure sensing diaphragm can be fixed, the fact that the central area of the negative pressure sensing diaphragm can have good deformability is effectively ensured, and the negative pressure sensing diaphragm is more accurately sensed. The strain gauge is fixedly arranged in the central area of the negative pressure sensing diaphragm, so that the most sensitive deformation area of the negative pressure sensing diaphragm can be accurately detected, and further, an accurate negative pressure value can be obtained. The negative pressure sensing diaphragm is matched with the left end cover and the right end cover to divide the accommodating cavity into a left cavity and a right cavity, meanwhile, a through hole is formed in the left end cover, the left cavity is communicated with the outside through the through hole, the left side face of the negative pressure sensing diaphragm is balanced with the outside air pressure, in addition, the right cavity is a closed cavity, and therefore the pressure condition of the right cavity can be effectively sensed when the pressure of the right cavity is different from the outside air pressure. An upper drainage channel for communicating the right cavity with the drainage catheter is formed on the right side of the upper connecting joint, and a lower drainage channel for communicating the right cavity with the drainage sphere is formed on the right side of the lower connecting joint, so that the right cavity and the inner cavity of the drainage sphere can have the same pressure state, and the pressure condition inside the drainage sphere can be perceived through the deformation of the negative pressure perception membrane. Through having seted up the through-hole on the left end cover, still be favorable to reporting to the police dispatch newspaper sound to the external world to play the effect of effective warning. Set up PCBA board in left cavity to make be provided with the perception monitoring circuit unit who is connected with the foil gage on the PCBA board, can make the PCBA board according to the negative pressure value size of foil gage deflection's size perception right cavity, and then give the light instruction of different colours according to the size of negative pressure value, thereby can utilize the pilot lamp to show the inside negative pressure's of drainage spheroid state directly perceivedly, be favorable to the user to know the spheroidal state of drainage in time, further can utilize negative pressure drainage device to carry out timely effectual diagnosis and treat to the disease. In addition, the PCBA board can give an alarm when the negative pressure value cannot meet the requirement of normal operation, so that the early warning effect can be achieved when the liquid in the drainage sphere is more, and medical staff can be reminded to discharge the liquid in the drainage sphere in time or immediately replace a new drainage sphere when the drainage sphere cannot rebound automatically; the lower part of the lower connecting joint is provided with the accommodating groove I which is matched with the upper opening end of the drainage sphere, the upper opening end of the drainage sphere is matched with the lower connecting joint through threads, the monitoring mechanism can be conveniently assembled at the upper opening end of the drainage sphere, and meanwhile, the monitoring mechanism is also conveniently separated from the upper opening end of the drainage sphere, so that liquid in the drainage sphere can be conveniently discharged. The outer thread structure II is arranged on the outer side of the upper end of the upper connecting joint, meanwhile, the accommodating groove II which is matched with the upper connecting joint is arranged on the lower portion of the upper end cover, and the inner thread structure II is arranged in the accommodating groove II, so that the upper end cover and the monitoring mechanism can be conveniently assembled and separated. Because all pass through screw thread cooperation between monitoring mechanism and the upper end cover of its top, with between the drainage spheroid of its below, can conveniently wash maintenance operation to monitoring mechanism like this.
The device is rational in infrastructure, can monitor the inside negative pressure state of drainage spheroid in real time to can help showing the inside negative pressure state of drainage spheroid directly perceivedly, be favorable to reducing medical personnel's work load, simultaneously, can effectively ensure that medical personnel can provide and timely effectual diagnosis and treat the operation for the disease.
Drawings
The invention will be further described with reference to the accompanying drawings and examples.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic view of the structure of the main connecting block of the present invention;
FIG. 4 is a schematic illustration of the negative pressure sensing diaphragm and strain gauge of the present invention in an undeformed state;
FIG. 5 is a schematic diagram of the deformation state of the negative pressure sensing diaphragm and the strain gauge in the invention;
fig. 6 is a schematic circuit diagram of a sensing and monitoring circuit unit in the present invention.
In the figure, 1, a drainage catheter, 2, an upper end cover, 3, a monitoring mechanism, 4, a drainage sphere, 5, a left end cover, 6, a PCBA board, 7, a negative pressure sensing diaphragm, 8, a right end cover, 9, a main connecting block, 10, a diaphragm fixing ring, 11, a strain gauge, 12, a fixing screw, 13, a mounting column, 14, a lamp hole, 15, a switch hole, 16, an indicator lamp, 17, a first external thread structure, 18, an upper connecting joint, 19, a lower connecting joint, 20, a containing cavity, 21, a left cavity, 22, a right cavity, 23, a second external thread structure, 24, an upper drainage channel, 25, a containing groove, 26, a first internal thread structure, 27, a lower drainage channel, 28 and a toggle switch.
Description of the embodiments
The invention is further described below with reference to the accompanying drawings;
as shown in fig. 1 to 6, the invention provides a state self-testing negative pressure drainage device, which comprises a drainage sphere 4, a monitoring mechanism 3, an upper end cover 2 and a drainage catheter 1;
the drainage sphere 4 is made of elastic material, the upper end of the drainage sphere is open, and an external thread structure I17 is arranged on the outer side of the upper open end; the monitoring mechanism 3 consists of a main connecting block 9, a diaphragm fixing ring 10, a left end cover 5, a right end cover 8, a negative pressure sensing diaphragm 7, a strain gauge 11, a PCBA board 6, an upper connecting joint 18 and a lower connecting joint 19; the inside of the main connecting block 9 is provided with a transversely extending accommodating cavity 20, a left opening communicated with the accommodating cavity 20 is formed at the left end, and a right opening communicated with the accommodating cavity 20 is formed at the right end; the shape and the size of the diaphragm fixing ring 10 are matched with those of the accommodating cavity 20, the diaphragm fixing ring 10 is arranged in the central area of the accommodating cavity 20, and the outer end edge of the diaphragm fixing ring is fixedly connected with the main connecting block 9; the shape and the size of the left end cover 5 are matched with those of the left opening, the left end cover 5 is fixedly packaged at the left opening of the main connecting block 9, and a through hole is formed in the left end cover 5; the shape and the size of the right end cover 8 are matched with those of the right opening, and the right end cover is fixedly packaged at the right opening of the main connecting block 9; the shape and the size of the negative pressure sensing diaphragm 7 are matched with those of the accommodating cavity 20, the negative pressure sensing diaphragm is arranged at the central part of the accommodating cavity 20, the outer end edge of the negative pressure sensing diaphragm is fixedly connected with the diaphragm fixing ring 10, the accommodating cavity 20 is separated into a left cavity 21 and a right cavity 22 by matching with the left end cover 5 and the right end cover 8, the left cavity 21 is communicated with the outside atmosphere through a through hole, and the right cavity 22 is of a sealing structure; the strain gauge 11 is fixedly connected to the central area of the negative pressure sensing diaphragm 7; the PCBA plate 6 is arranged in the left cavity 21 and fixedly arranged on the right side surface of the left end cover 5; the PCBA board 6 is provided with a sensing and monitoring circuit unit, an indicator lamp 16 and a buzzer are arranged in the sensing and monitoring circuit unit, the indicator lamp 16 is arranged corresponding to the through hole, the sensing and monitoring circuit unit is connected with the strain gauge 11 and is used for sensing the magnitude of the negative pressure value of the right cavity 22 according to the magnitude of the deformation of the strain gauge 11, giving light indications of different colors according to the magnitude of the negative pressure value and giving an alarm when the negative pressure value cannot meet the normal work;
the upper connecting joint 18 is fixedly connected to the upper end of the main connecting block 9, an external thread structure II 23 is formed on the outer side of the upper end of the upper connecting joint 18, an upper drainage channel 24 for communicating the right cavity 22 with the outside is vertically formed on the right side part, the lower connecting joint 19 is fixedly connected to the lower end of the main connecting block 9, an accommodating groove I25 is formed on the inner side of the lower part of the lower connecting joint 19, a lower drainage channel 27 for communicating the right cavity 22 and the accommodating groove I25 is vertically formed on the right side part, the shape and the size of the accommodating groove I25 are matched with the shape and the size of the upper opening end of the drainage ball 4, and an internal thread structure I26 is formed at the position corresponding to the external thread structure I17; the lower connecting joint 19 is fixedly sleeved outside the upper opening end of the drainage sphere 4 through the threaded fit between the first internal thread structure 26 and the first external thread structure 17;
the inner side of the lower part of the upper end cover 2 is provided with a second accommodating groove, the shape and the size of the second accommodating groove are matched with those of the upper end part of the upper connecting joint 18, an inner thread structure II is arranged at the position corresponding to the outer thread structure II 23, and the upper end cover 2 is fixedly sleeved on the outer side of the upper end part of the upper connecting joint 18 through the threaded fit between the inner thread structure II and the outer thread structure II 23;
the drainage catheter 1 is vertically arranged, and the lower end of the drainage catheter is fixedly connected with the upper end central area of the upper end cover 2 and is communicated with the accommodating groove.
The number of the through holes on the left end cover 5 is four, namely a switch hole 15 and three lamp holes 14; the sensing and monitoring circuit unit is also provided with a toggle switch 28, one end of the toggle switch 28 is arranged on the left side surface of the PCBA board 6, the other end of the toggle switch 28 penetrates out to the outside through the switch hole 15, and a gap is reserved between the toggle switch 28 and the switch hole 15; the number of the indicator lamps 16 is three, namely a green LED indicator lamp, a yellow LED indicator lamp and a red LED indicator lamp, and the indicator lamps are all arranged on the left side surface of the PCBA board 6; three indicator lamps 16 are installed in the three lamp holes 14 in a one-to-one correspondence, and gaps are reserved between each indicator lamp 16 and each corresponding lamp hole 14. Through setting up toggle switch in perception monitoring circuit unit to make it wear out the outside of monitoring mechanism through the switch hole of seting up on the left end cover, can conveniently control the beginning and the end process of monitoring operation. Through setting up green LED pilot lamp, yellow LED pilot lamp and red LED pilot lamp in the perception monitoring circuit unit to make it install respectively in three lamp holes, so, can be convenient for give the light indication of different colours under the different states of negative pressure value, thereby be convenient for judge directly perceivedly through light and lead spheroidal negative pressure state.
In order to realize effective monitoring of the negative pressure state, the sensing and monitoring circuit unit further comprises a resistor R1, a resistor R2, a resistor R3, an amplifying circuit, an MCU module, a voltage stabilizing circuit, a storage battery pack, an LED driving circuit and a buzzer driving circuit;
the resistance value of the strain gauge 11, the resistance value of the resistor R1, the resistance value of the resistor R2 and the resistance value of the resistor R3 are the same, the first end of the strain gauge 11 is connected with the first end of the resistor R1, the second end of the resistor R3 is connected with the first end of the resistor R2, the second end of the resistor R2 is connected with the second end of the resistor R1, the strain gauge 11, the resistor R1, the resistor R2 and the resistor R3 form a wheatstone bridge, a connection node between the second end of the strain gauge 11 and the first end of the resistor R3 forms a first power supply access end of the wheatstone bridge, a connection node between the second end of the resistor R2 and the second end of the resistor R1 forms a second power supply access end of the wheatstone bridge, and a connection node between the first end of the strain gauge 11 and the first end of the resistor R1 forms a first output end of the wheatstone bridge, and a connection node between the second end of the resistor R3 and the first end of the resistor R2 forms a second output end of the wheatstone bridge;
the first input end of the amplifying circuit is connected with the first output end of the Wheatstone bridge, and the second input end of the amplifying circuit is connected with the second output end of the Wheatstone bridge;
the input end of the MCU module is connected with the output end of the amplifying circuit;
the input end of the voltage stabilizing circuit is connected with the anode of the storage battery pack through a toggle switch 28, and the output end of the voltage stabilizing circuit is respectively connected with the first power supply access end of the MCU module, the first power supply access end of the Wheatstone bridge and the first power supply access end of the amplifying circuit;
the storage battery pack is arranged on the PCBA 6, the negative electrode of the storage battery pack is grounded, and the storage battery pack is respectively connected with the second power supply access end of the MCU module, the second power supply access end of the amplifying circuit and the second power supply access end of the Wheatstone bridge;
the first input end, the second input end and the third input end of the LED driving circuit are respectively connected with the first output end, the second output end and the third output end of the MCU module;
the green LED indicator lamp, the yellow LED indicator lamp and the red LED indicator lamp are all light-emitting diodes, the positive electrode of the green LED indicator lamp is connected with the first output end of the LED driving circuit, the positive electrode of the yellow LED indicator lamp is connected with the second output end of the LED driving circuit, the positive electrode of the red LED indicator lamp is connected with the third output end of the LED driving circuit, and the negative electrode of the green LED indicator lamp, the negative electrode of the yellow LED indicator lamp and the negative electrode of the red LED indicator lamp are grounded;
the input end of the buzzer driving circuit is connected with the fourth output end of the MCU module, the output end of the buzzer driving circuit is connected with the first power supply access end of the buzzer, and the second power supply access end of the buzzer is grounded; the buzzer is mounted on the PCBA board 6.
The right side of the left end cover 5 is fixedly connected with a transversely extending mounting column 13, a threaded hole is formed in the center of the mounting column 13, a mounting hole is formed in the PCBA board 6 at the position corresponding to the mounting column 13, and a fixing screw 12 penetrates through the mounting hole and then is connected into the threaded hole through threaded fit, so that the PCBA board 6 is fixedly connected with the left end cover 5.
Preferably, the left end cover 5 and the main connecting block 9, the right end cover 8 and the main connecting block 9, the diaphragm fixing ring 10 and the negative pressure sensing diaphragm 7, and the strain gauge 11 and the negative pressure sensing diaphragm 7 are fixedly connected in a cementing manner.
Preferably, the longitudinal section of the accommodating chamber 20 is circular.
In order to better fix the outer edge part of the negative pressure sensing diaphragm when the negative pressure sensing diaphragm deforms to the right due to the negative pressure of the right cavity, the negative pressure sensing diaphragm 7 is positioned at the left side of the diaphragm fixing ring 10.
In order to be able to directly assemble the upper end cover outside the upper opening end of the drainage sphere in case of failure of the monitoring mechanism, so as to effectively cope with emergency diagnosis and treatment conditions, the shape and the size of the accommodating groove II are matched with those of the upper opening end of the drainage sphere 4, and the internal thread structure II is matched with the external thread structure I17.
The negative pressure sensing diaphragm 7, the right end cover 8 and the main connecting block 9 form a closed space, namely a right cavity 22, meanwhile, the right cavity 22 is communicated with the drainage catheter 1 through the upper drainage channel 24, is communicated with the inner cavity of the drainage sphere 4 through the lower upper drainage channel 20, and when liquid is absorbed, the absorbed liquid can flow into the drainage sphere 4 through the drainage catheter 1 through the upper drainage channel 24, the right cavity 22 and the lower drainage channel 20 in sequence.
Since the right cavity 22 and the inner cavity of the drainage sphere 4 are in sealed communication with each other, the right cavity 22 has the same negative pressure state as the inner cavity of the drainage sphere 4, and in addition, the left cavity 21 is in communication with the outside through a through hole.
When no negative pressure exists in the drainage sphere 4, the pressure in the left cavity 21 and the pressure in the right cavity 22 are the same, the negative pressure sensing diaphragm 7 does not deform, meanwhile, the strain gauge 11 does not deform, when no deformation occurs, the resistance of the strain gauge 11 is the same as that of the other three resistors R1, R2 and R3, the Wheatstone bridge at the moment is in a balanced state, the output voltage of the output end of the amplifying circuit is 0V, the MCU module can not receive the ADC value, and then the indication lamp can not be lightened, and the buzzer can not be controlled to alarm.
When negative pressure exists in the drainage ball 4 and the state is normal, the negative pressure sensing diaphragm 7 deforms under the influence of the negative pressure, the strain gauge 11 attached to the negative pressure sensing diaphragm 7 also deforms, the negative pressure sensing diaphragm 7 is deformed with the strain gauge 11 sinking towards the right side close to the right cavity 22, the resistance of the deformed strain gauge 11 changes, the Wheatstone bridge is in an unbalanced state, and the output voltage of the output end of the amplifying circuit is not 0V. The larger the negative pressure value is, the larger the deformation amount of the strain gauge 11 is, the larger the output voltage of the output end of the amplifying circuit is, the MCU module judges the magnitude of the negative pressure value through the received ADC value, and the indication lamps and the buzzers with different colors are driven to act according to the magnitude of the negative pressure value. Specifically, when the negative pressure value is in the normal state range, the MCU module controls the green LED indicator lamp to be lightened, and no operation is needed at the moment; when the negative pressure value is smaller and is in a smaller range, the MCU module controls the yellow LED indicator lamp to be lightened so as to prompt the attention of medical staff; when the negative pressure value reaches the normal operating condition scope of not meeting, MCU module control red LED pilot lamp lights, simultaneously, and control bee calling organ sends alarm sound, and alarm sound makes a sound 500 milliseconds every 10 seconds, and at this moment, needs medical personnel to look over drainage spheroidal state, if the inside of drainage spheroid 4 is deposited full of liquid, needs manual operation to pour the inside liquid of drainage spheroid 4 in time, if when can't rebound by oneself because of other reasons, then need more medical personnel in time change drainage spheroid 4.
When the drainage ball body 4 is used, firstly, the drainage ball body 4 is extruded to discharge air in the drainage ball body, then the upper end of the drainage catheter 1 is inserted into an operation part to serve as a suction end, and accumulated liquid, effusion and the like of the operation part are sucked out of the body by utilizing negative pressure in the drainage ball body 4, and enter the drainage ball body 4 through the drainage catheter 1, the upper drainage channel 24, the accommodating cavity 20 and the lower drainage channel 27 in sequence, when liquid in the drainage ball body 4 is required to be discharged, only the threads between the connecting joint 19 and the upper opening end of the drainage ball body 4 are required to be unscrewed, so that the drainage ball body 4 is separated from the main connecting block 9, and the liquid in the drainage ball body can be conveniently discharged.
According to the invention, the middle part of the main connecting block body is provided with the accommodating cavity, the left end and the right end are respectively provided with the left opening and the right opening, and meanwhile, the left end cover and the right end cover are respectively packaged at the left opening and the right opening, so that a device for detecting negative pressure can be conveniently installed in the accommodating cavity, and meanwhile, the device in the accommodating cavity can be conveniently maintained. The diaphragm fixing ring is fixedly connected to the central area of the accommodating cavity, so that the negative pressure sensing diaphragm is conveniently fixed to the central area of the accommodating cavity by the diaphragm fixing ring, the outer end edge of the negative pressure sensing diaphragm can be fixed, the fact that the central area of the negative pressure sensing diaphragm can have good deformability is effectively ensured, and the negative pressure sensing diaphragm is more accurately sensed. The strain gauge is fixedly arranged in the central area of the negative pressure sensing diaphragm, so that the most sensitive deformation area of the negative pressure sensing diaphragm can be accurately detected, and further, an accurate negative pressure value can be obtained. The negative pressure sensing diaphragm is matched with the left end cover and the right end cover to divide the accommodating cavity into a left cavity and a right cavity, meanwhile, a through hole is formed in the left end cover, the left cavity is communicated with the outside through the through hole, the left side face of the negative pressure sensing diaphragm is balanced with the outside air pressure, in addition, the right cavity is a closed cavity, and therefore the pressure condition of the right cavity can be effectively sensed when the pressure of the right cavity is different from the outside air pressure. An upper drainage channel for communicating the right cavity with the drainage catheter is formed on the right side of the upper connecting joint, and a lower drainage channel for communicating the right cavity with the drainage sphere is formed on the right side of the lower connecting joint, so that the right cavity and the inner cavity of the drainage sphere can have the same pressure state, and the pressure condition inside the drainage sphere can be perceived through the deformation of the negative pressure perception membrane. Through having seted up the through-hole on the left end cover, still be favorable to reporting to the police dispatch newspaper sound to the external world to play the effect of effective warning. Set up PCBA board in left cavity to make be provided with the perception monitoring circuit unit who is connected with the foil gage on the PCBA board, can make the PCBA board according to the negative pressure value size of foil gage deflection's size perception right cavity, and then give the light instruction of different colours according to the size of negative pressure value, thereby can utilize the pilot lamp to show the inside negative pressure's of drainage spheroid state directly perceivedly, be favorable to the user to know the spheroidal state of drainage in time, further can utilize negative pressure drainage device to carry out timely effectual diagnosis and treat to the disease. In addition, the PCBA board can give an alarm when the negative pressure value cannot meet the requirement of normal operation, so that the early warning effect can be achieved when the liquid in the drainage sphere is more, and medical staff can be reminded to discharge the liquid in the drainage sphere in time or immediately replace a new drainage sphere when the drainage sphere cannot rebound automatically; the lower part of the lower connecting joint is provided with the accommodating groove I which is matched with the upper opening end of the drainage sphere, the upper opening end of the drainage sphere is matched with the lower connecting joint through threads, the monitoring mechanism can be conveniently assembled at the upper opening end of the drainage sphere, and meanwhile, the monitoring mechanism is also conveniently separated from the upper opening end of the drainage sphere, so that liquid in the drainage sphere can be conveniently discharged. The outer thread structure II is arranged on the outer side of the upper end of the upper connecting joint, meanwhile, the accommodating groove II which is matched with the upper connecting joint is arranged on the lower portion of the upper end cover, and the inner thread structure II is arranged in the accommodating groove II, so that the upper end cover and the monitoring mechanism can be conveniently assembled and separated. Because all pass through screw thread cooperation between monitoring mechanism and the upper end cover of its top, with between the drainage spheroid of its below, can conveniently wash maintenance operation to monitoring mechanism like this.
The device is rational in infrastructure, can monitor the inside negative pressure state of drainage spheroid in real time to can help showing the inside negative pressure state of drainage spheroid directly perceivedly, be favorable to reducing medical personnel's work load, simultaneously, can effectively ensure that medical personnel can provide and timely effectual diagnosis and treat the operation for the disease.
Claims (8)
1. The state self-testing negative pressure drainage device comprises a drainage sphere (4), wherein the drainage sphere (4) is made of an elastic material, the upper end of the drainage sphere is provided with an opening, and the outer side of the upper opening end is provided with an external thread structure I (17); the device is characterized by further comprising a monitoring mechanism (3), an upper end cover (2) and a drainage catheter (1);
the monitoring mechanism (3) consists of a main connecting block (9), a diaphragm fixing ring (10), a left end cover (5), a right end cover (8), a negative pressure sensing diaphragm (7), a strain gauge (11), a PCBA (printed circuit board assembly) plate (6), an upper connecting joint (18) and a lower connecting joint (19); the inside of the main connecting block body (9) is provided with a transversely extending accommodating cavity (20), a left opening communicated with the accommodating cavity (20) is formed at the left end, and a right opening communicated with the accommodating cavity (20) is formed at the right end; the shape and the size of the diaphragm fixing ring (10) are matched with those of the accommodating cavity (20), the diaphragm fixing ring (10) is arranged in the central area of the accommodating cavity (20), and the outer end edge of the diaphragm fixing ring is fixedly connected with the main connecting block (9); the shape and the size of the left end cover (5) are matched with those of the left opening, the left end cover is fixedly packaged at the left opening of the main connecting block (9), and a through hole is formed in the left end cover (5); the shape and the size of the right end cover (8) are matched with those of the right opening, and the right end cover is fixedly packaged at the right opening of the main connecting block (9); the shape and the size of the negative pressure sensing diaphragm (7) are matched with those of the accommodating cavity (20), the negative pressure sensing diaphragm is arranged at the central part of the accommodating cavity (20), the outer end edge of the negative pressure sensing diaphragm is fixedly connected with the diaphragm fixing ring (10), the accommodating cavity (20) is isolated into a left cavity (21) and a right cavity (22) by matching with the left end cover (5) and the right end cover (8), the left cavity (21) is communicated with the outside atmosphere through a through hole, and the right cavity (22) is of a sealing structure; the strain gauge (11) is fixedly connected to the central area of the negative pressure sensing diaphragm (7); the PCBA board (6) is arranged in the left cavity (21) and is fixedly arranged on the right side surface of the left end cover (5); the PCBA board (6) is provided with a perception monitoring circuit unit, an indicator lamp (16) and a buzzer are arranged in the perception monitoring circuit unit, the indicator lamp (16) is arranged corresponding to the through hole, the perception monitoring circuit unit is connected with the strain gauge (11) and is used for perceiving the negative pressure value of the right cavity (22) according to the deformation of the strain gauge (11), giving light indications of different colors according to the negative pressure value, and giving an alarm when the negative pressure value cannot meet the normal work;
the upper connecting joint (18) is fixedly connected to the upper end of the main connecting block (9), an external thread structure II (23) is formed in the outer side of the upper end of the upper connecting joint (18), an upper drainage channel (24) which is communicated with a right cavity (22) and the outside is vertically formed in the right side part, the lower connecting joint (19) is fixedly connected to the lower end of the main connecting block (9), a containing groove I (25) is formed in the inner side of the lower part of the lower connecting joint (19), a lower drainage channel (27) which is communicated with the right cavity (22) and the containing groove I (25) is vertically formed in the right side part, the shape and the size of the containing groove I (25) are matched with the shape and the size of the upper opening end of the drainage sphere (4), and an internal thread structure I (26) is formed in the position corresponding to the external thread structure I (17); the lower connecting joint (19) is fixedly sleeved outside the upper opening end of the drainage sphere (4) through the threaded fit between the first internal thread structure (26) and the first external thread structure (17);
the inner side of the lower part of the upper end cover (2) is provided with a second accommodating groove, the shape and the size of the second accommodating groove are matched with those of the upper end part of the upper connecting joint (18), an inner thread structure II is arranged at the position corresponding to the outer thread structure II (23), and the upper end cover (2) is fixedly sleeved on the outer side of the upper end part of the upper connecting joint (18) through the threaded fit between the inner thread structure II and the outer thread structure II (23);
the drainage catheter (1) is vertically arranged, the lower end of the drainage catheter is fixedly connected with the upper end center area of the upper end cover (2), and the drainage catheter is communicated with the accommodating groove.
2. The state self-testing negative pressure drainage device according to claim 1, wherein the number of through holes on the left end cover (5) is four, namely a switch hole (15) and three lamp holes (14); a toggle switch (28) is further arranged in the sensing and monitoring circuit unit, one end of the toggle switch (28) is arranged on the left side face of the PCBA board (6), the other end of the toggle switch (28) penetrates out to the outside through a switch hole (15), and a gap is reserved between the toggle switch (28) and the switch hole (15); the number of the indicator lamps (16) is three, namely a green LED indicator lamp, a yellow LED indicator lamp and a red LED indicator lamp, and the indicator lamps are all arranged on the left side surface of the PCBA board (6); the three indicator lamps (16) are arranged in the three lamp holes (14) in a one-to-one correspondence manner, and gaps are reserved between each indicator lamp (16) and each corresponding lamp hole (14).
3. The state self-testing negative pressure drainage device according to claim 2, wherein the sensing and monitoring circuit unit further comprises a resistor R1, a resistor R2, a resistor R3, an amplifying circuit, an MCU module, a voltage stabilizing circuit, a storage battery pack, an LED driving circuit and a buzzer driving circuit;
the resistance of the strain gauge (11), the resistance of the resistor R1, the resistance of the resistor R2 and the resistance of the resistor R3 are the same, the first end of the strain gauge (11) is connected with the first end of the resistor R1, the second end of the strain gauge is connected with the first end of the resistor R3, the second end of the resistor R2 is connected with the second end of the resistor R1, the strain gauge (11), the resistor R1, the resistor R2 and the resistor R3 form a Wheatstone bridge, a connection node between the second end of the strain gauge (11) and the first end of the resistor R3 forms a first power supply access end of the Wheatstone bridge, a connection node between the second end of the resistor R2 and the second end of the resistor R1 forms a second power supply access end of the Wheatstone bridge, and a connection node between the first end of the strain gauge (11) and the first end of the resistor R1 forms a first output end of the Wheatstone bridge;
the first input end of the amplifying circuit is connected with the first output end of the Wheatstone bridge, and the second input end of the amplifying circuit is connected with the second output end of the Wheatstone bridge;
the input end of the MCU module is connected with the output end of the amplifying circuit;
the input end of the voltage stabilizing circuit is connected with the anode of the storage battery pack through a toggle switch (28), and the output end of the voltage stabilizing circuit is respectively connected with the first power supply access end of the MCU module, the first power supply access end of the Wheatstone bridge and the first power supply access end of the amplifying circuit;
the storage battery pack is arranged on the PCBA (6), the negative electrode of the storage battery pack is grounded, and the storage battery pack is respectively connected with the second power supply access end of the MCU module, the second power supply access end of the amplifying circuit and the second power supply access end of the Wheatstone bridge;
the first input end, the second input end and the third input end of the LED driving circuit are respectively connected with the first output end, the second output end and the third output end of the MCU module;
the green LED indicator lamp, the yellow LED indicator lamp and the red LED indicator lamp are all light-emitting diodes, the positive electrode of the green LED indicator lamp is connected with the first output end of the LED driving circuit, the positive electrode of the yellow LED indicator lamp is connected with the second output end of the LED driving circuit, the positive electrode of the red LED indicator lamp is connected with the third output end of the LED driving circuit, and the negative electrode of the green LED indicator lamp, the negative electrode of the yellow LED indicator lamp and the negative electrode of the red LED indicator lamp are grounded;
the input end of the buzzer driving circuit is connected with the fourth output end of the MCU module, the output end of the buzzer driving circuit is connected with the first power supply access end of the buzzer, and the second power supply access end of the buzzer is grounded; the buzzer is arranged on the PCBA board (6).
4. A state self-testing negative pressure drainage device according to any one of claims 1 to 3, wherein a transversely extending mounting column (13) is fixedly connected to the right side surface of the left end cover (5), a threaded hole is formed in the center of the mounting column (13), a mounting hole is formed in the position, corresponding to the mounting column (13), of the PCBA plate (6), and the fixing screw (12) penetrates through the mounting hole and is connected to the threaded hole through threaded fit, so that the PCBA plate (6) is fixedly connected with the left end cover (5).
5. The state self-testing negative pressure drainage device according to claim 4, wherein the left end cover (5) and the main connecting block (9), the right end cover (8) and the main connecting block (9), the diaphragm fixing ring (10) and the negative pressure sensing diaphragm (7) and the strain gauge (11) and the negative pressure sensing diaphragm (7) are fixedly connected through cementing.
6. The device according to claim 5, wherein the longitudinal section of the receiving chamber (20) is circular.
7. The state self-testing negative pressure drainage device according to claim 6, wherein the negative pressure sensing diaphragm (7) is positioned at the left side of the diaphragm fixing ring (10).
8. The state self-testing negative pressure drainage device according to claim 7, wherein the shape and the size of the second accommodating groove are matched with the shape and the size of the upper opening end of the drainage sphere (4), and the second internal thread structure is matched with the first external thread structure (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311055015.3A CN117281963B (en) | 2023-08-22 | 2023-08-22 | State self-testing negative pressure drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311055015.3A CN117281963B (en) | 2023-08-22 | 2023-08-22 | State self-testing negative pressure drainage device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117281963A true CN117281963A (en) | 2023-12-26 |
| CN117281963B CN117281963B (en) | 2024-03-08 |
Family
ID=89256079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311055015.3A Active CN117281963B (en) | 2023-08-22 | 2023-08-22 | State self-testing negative pressure drainage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117281963B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986001115A1 (en) * | 1984-08-04 | 1986-02-27 | Braun Karl Theo | Device for pumping liquids which are highly sensitive to mechanical strains |
| CN203043066U (en) * | 2012-10-18 | 2013-07-10 | 珠海市奥吉赛科技有限公司 | Negative pressure regulator main body |
| CN204092670U (en) * | 2014-10-09 | 2015-01-14 | 周玉虹 | The portable drainage device of negative pressure micro-control |
| CN104587542A (en) * | 2015-01-30 | 2015-05-06 | 复旦大学附属金山医院 | Negative-pressure drainage monitoring device based on air pressure sensor |
| CN204699112U (en) * | 2015-06-02 | 2015-10-14 | 北京大学第一医院 | For the negative pressure drainage device of drain patient hydrops |
| CN107614032A (en) * | 2015-06-01 | 2018-01-19 | 日机装株式会社 | Medical hydraulic detection device |
| CN209695896U (en) * | 2018-04-18 | 2019-11-29 | 华中科技大学同济医学院附属同济医院 | Negative pressure drainage device |
| CN211157611U (en) * | 2019-09-20 | 2020-08-04 | 上海市肺科医院 | Negative pressure ball with pressure detection device |
| WO2022212409A1 (en) * | 2021-03-30 | 2022-10-06 | Merit Medical Systems, Inc. | Vacuum drainage collection bottle with vacuum indicator |
-
2023
- 2023-08-22 CN CN202311055015.3A patent/CN117281963B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986001115A1 (en) * | 1984-08-04 | 1986-02-27 | Braun Karl Theo | Device for pumping liquids which are highly sensitive to mechanical strains |
| CN203043066U (en) * | 2012-10-18 | 2013-07-10 | 珠海市奥吉赛科技有限公司 | Negative pressure regulator main body |
| CN204092670U (en) * | 2014-10-09 | 2015-01-14 | 周玉虹 | The portable drainage device of negative pressure micro-control |
| CN104587542A (en) * | 2015-01-30 | 2015-05-06 | 复旦大学附属金山医院 | Negative-pressure drainage monitoring device based on air pressure sensor |
| CN107614032A (en) * | 2015-06-01 | 2018-01-19 | 日机装株式会社 | Medical hydraulic detection device |
| CN204699112U (en) * | 2015-06-02 | 2015-10-14 | 北京大学第一医院 | For the negative pressure drainage device of drain patient hydrops |
| CN209695896U (en) * | 2018-04-18 | 2019-11-29 | 华中科技大学同济医学院附属同济医院 | Negative pressure drainage device |
| CN211157611U (en) * | 2019-09-20 | 2020-08-04 | 上海市肺科医院 | Negative pressure ball with pressure detection device |
| WO2022212409A1 (en) * | 2021-03-30 | 2022-10-06 | Merit Medical Systems, Inc. | Vacuum drainage collection bottle with vacuum indicator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117281963B (en) | 2024-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11135383B2 (en) | Resuscitation device with onboard processor | |
| US4316182A (en) | Ventilator disconnection alarm | |
| CN117281963B (en) | State self-testing negative pressure drainage device | |
| WO2020238675A1 (en) | Multifunctional central attraction system capable of realizing remote monitoring | |
| CN205073362U (en) | Miniature vacuum aspiration ware | |
| US7169112B2 (en) | Non-contact respiration monitor | |
| CN211751356U (en) | Intelligent urine bag capable of giving out voice alarm | |
| CN109875888B (en) | Blood transfusion bag with function of detecting PH and resistance value of blood | |
| CN210513515U (en) | Air bag pressure monitoring device | |
| CN2897279Y (en) | Infusion monitor alarming device | |
| CN209091363U (en) | Haemodynamics with air bag breakage monitoring function detects pulmonary artery floating catheter | |
| CN215537501U (en) | Icu trachea cannula capable of monitoring and displaying air pressure in real time | |
| CN207980120U (en) | A kind of infusion apparatus with warning function | |
| CN217328490U (en) | Limit block with pressure reminding function for sterile diaphragm valve | |
| CN211461421U (en) | Multifunctional central suction system capable of realizing remote monitoring | |
| CN210644745U (en) | Infusion pump control system | |
| CN109745585B (en) | Multi-gear alarm device for sputum aspirator and sputum aspirator | |
| CN209399128U (en) | One kind can monitor medical oxygen cylinder | |
| CN220751302U (en) | Drainage liquid level monitoring device | |
| CN213048453U (en) | Pleural cavity drainage system | |
| CN110960419A (en) | First-aid equipment based on heart rate sensor | |
| CN113917128A (en) | Medical gas collection system | |
| CN216294925U (en) | Trachea cannula with visual pressure inflatable bag | |
| CN220125281U (en) | Tracheal intubation device with pressure prompt function | |
| CN111001274B (en) | Front-mounted multifunctional respiratory state indicating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |