CN115444998A

CN115444998A - Pleural cavity drainage device after lung injury operation

Info

Publication number: CN115444998A
Application number: CN202211076807.4A
Authority: CN
Inventors: 赵智慧; 张生茂; 于少飞
Original assignee: Inner Mongolia People's Hospital (inner Mongolia Cancer Hospital)
Current assignee: Inner Mongolia People's Hospital (inner Mongolia Cancer Hospital)
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2022-12-09

Abstract

The invention discloses a pleural cavity drainage device after lung injury surgery, which comprises a thoracic drainage tube and a negative pressure drainage controller, wherein the thoracic drainage tube is inserted on the negative pressure drainage controller, the thoracic drainage tube is connected with the negative pressure drainage controller through a data connecting wire, the thoracic drainage tube consists of a drainage tube and a visual pressure monitoring catheter, a negative pressure buffer bottle, a negative pressure suction pump, a relay, a control circuit board and a storage battery are fixed in the negative pressure drainage controller, the storage battery is connected with the control circuit board, the control circuit board is connected with the relay, the relay is connected with the negative pressure suction pump, the negative pressure suction pump is connected with the negative pressure buffer bottle through a connecting pipe, an air pressure sensor is fixed on the negative pressure buffer bottle, and a backflow prevention assembly is fixed at the top of the drainage catheter. The device utilizes the front end of micropore camera real-time supervision thoracic drainage tube to insert the condition and fix a position, and it still can carry out real-time supervision to the negative pressure in the pleural cavity, prevents that the lung from taking place the problem of pulling injury under lasting negative pressure suction.

Description

Pleural cavity drainage device after lung injury operation

Technical Field

The invention relates to the field of medical instruments after lung injury, in particular to a pleural cavity drainage device after lung injury.

Background

The main cause of lung injury is lung trauma, such as caused by traffic accidents, including lung laceration, lung contusion and lung blast injury, the lung laceration is accompanied with visceral pleura laceration and can send hemopneumothorax, lung contusion is mostly blunt force injury, after injury, the capillary permeability is increased due to inflammatory reaction, and lung blast injury is caused by high-pressure air wave or water wave explained by explosion to wash and damage lung tissues. Pneumothorax and pleural effusion problem often can appear in the pleural cavity after the lung injury postoperative, in order to maintain the negative pressure state in the pleural cavity, often need be with the gas in the pleural cavity and hydrops drainage out of position to maintain the normal expansion of lung, prevent that the problem of the lung is not opened from taking place.

At present, the position can be drawn forth the gaseous and hydrops of pleural cavity to pleural cavity closed drainage, and thoracic cavity closed drainage apparatus commonly used includes thoracic drainage tube, three chamber drainage bottle and negative pressure machine, and the thoracic drainage tube one end is inserted the thoracic cavity, and the other end is connected to three chamber drainage bottle and is hindered, and negative pressure machine is connected to three chamber drainage bottle on, makes the negative pressure state in the three chamber drainage bottle through the negative pressure machine, and three chamber drainage bottle passes through the gas or hydrops drainage to patient's position of thoracic cavity. During thoracic drainage, the patient needs to adopt a semi-sitting position to complete drainage.

However, the following problems exist when performing closed thoracic drainage: 1. when the thoracic drainage tube is inserted, the front end of the thoracic drainage tube needs to be positioned by means of thoracic CT, so that the difficulty of operation is increased, and medical staff and patients are also damaged by radiation; 2. the pressure state in the peritoneal cavity cannot be monitored in the drainage process, and the chest CT needs to be repeatedly shot to determine whether the thoracic drainage device needs to be taken out or not; 3. the pressure state in the peritoneal cavity cannot be monitored, and the excessive negative pressure set by the negative pressure machine can cause strain of the lung; 4. because the existing negative pressure machine has a large volume, the negative pressure machine cannot be butted to carry out negative pressure drainage anytime and anywhere during the patient getting out of bed; 5. the existing thoracic drainage tube cannot resist backflow, when a patient exhales, the air pressure in a peritoneal cavity is suddenly reduced, and drainage liquid in a drainage bottle can flow back to the front end of the thoracic drainage tube and even the pleural cavity, so that backflow infection in the pleural cavity is caused; 6. when the drainage bottle is replaced, the thoracic drainage tube needs to be clamped and closed to prevent air from entering the pleural cavity through the drainage tube, so that the operation steps are increased, and the problem that air enters the pleural cavity when clamping is not tight still exists.

Disclosure of Invention

In order to solve the problems, the invention provides a pleural cavity drainage device after lung injury operation, which utilizes a microporous camera to monitor the front end insertion condition of a thoracic cavity drainage tube and the effusion suction condition in the pleural cavity in real time without the help of chest CT for insertion positioning; meanwhile, the device can also monitor the negative pressure in the pleural cavity in real time, and can intelligently disconnect a negative pressure switch of the negative pressure suction mechanism when the negative pressure value is stabilized at a normal negative pressure value, so that the problem that the lung is pulled under continuous negative pressure suction is prevented; the device is internally provided with a miniature negative pressure suction mechanism, does not need to be externally connected with a traditional negative pressure suction machine, can carry out negative pressure drainage at any time and any place during the bed-leaving activity of a patient, and accelerates the drainage process of air and effusion in a pleural cavity; simultaneously the thoracic drainage tube of this device has the function of anti refluence, can prevent that drainage liquid from flowing back to the pleural cavity in, and need not to carry out the clamp operation to thoracic drainage tube when changing the drainage liquid receiving flask and can prevent that the outside air from getting into the pleural cavity, it is safer to change the drainage liquid receiving flask.

In order to achieve the technical effects, the invention is realized by the following technical scheme:

the pleural cavity drainage device after lung injury surgery, including thoracic drainage tube and negative pressure drainage controller, thoracic drainage tube pegs graft on negative pressure drainage controller, thoracic drainage tube passes through the data link and is connected with negative pressure drainage controller, thoracic drainage tube comprises drainage tube and visual pressure monitoring pipe, open the front end of drainage tube has the drainage hole, visual pressure monitoring pipe comprises visual pressure monitoring probe and data transmission pipe, the drainage tube embraces with visual pressure monitoring pipe and constitutes cylindrical structure together, visual pressure monitoring probe sets up in thoracic drainage tube's foremost, the rear end of data transmission pipe is gone out and the rear end portion is equipped with data connector from thoracic drainage tube's rear end bifurcation, negative pressure drainage controller's top is equipped with the negative pressure drainage joint, be equipped with display screen and operation button on the negative pressure drainage controller, one side of negative pressure drainage controller is equipped with the data interface, the detachable grafting of negative pressure drainage controller has the drainage liquid collecting bottle, be fixed with the negative pressure buffer bottle in the negative pressure drainage controller, the negative pressure suction pump, the connecting pipe, control circuit board is connected with the control circuit board, the negative pressure drainage pump passes through the fixed negative pressure drainage bottle and is connected with the negative pressure drainage bottle, the negative pressure drainage bottle is connected with the negative pressure drainage control bottle, the negative pressure drainage tube is connected with the negative pressure drainage bottle, the negative pressure drainage bottle is connected with the negative pressure drainage control bottle, the negative pressure drainage controller, the negative pressure drainage bottle is connected the negative pressure drainage tube.

Further, the district's section of embracing with visual pressure monitoring pipe of drainage tube is semi-circular body, and the front end of drainage tube is the wedge, is equipped with the identical face of each other with the wedge of drainage tube on the data transmission pipe at visual pressure monitoring probe rear, visual monitoring probe's top is fixed with the micropore camera module, and open one side of visual monitoring probe has the negative pressure transmission hole, and the negative pressure transmission hole coats and is stamped waterproof ventilated membrane, and visual monitoring probe internal fixation has the baroceptor module, is fixed with micropore camera and LED light filling lamp on the micropore camera module, and the baroceptor module includes miniature baroceptor and circuit board, and miniature baroceptor is fixed in on the microcircuit board, and the miniature camera module is connected with the microcircuit board.

Furthermore, a single chip microcomputer, an image coding module and a data transmission module are fixed on the miniature circuit board, the miniature air pressure sensor is connected with the single chip microcomputer, the image coding module and the data transmission module are both connected with the single chip microcomputer, the micropore camera module is respectively connected with the image coding module and the single chip microcomputer, a data transmission line is led out of the data transmission module, and the data transmission line is embedded in the data transmission conduit and is connected with the data connector.

Furthermore, the negative pressure drainage controller comprises an encapsulation shell and a bottom plate, the encapsulation shell can be made of transparent materials, a display screen and an operation button are fixed on the encapsulation shell, a through long longitudinal partition plate is fixed on the bottom plate, the longitudinal partition plate divides the bottom plate into a left drainage area and a right functional area, the drainage area is provided with a first transverse partition plate, a negative pressure buffer bottle is fixed above the first transverse partition plate, a drainage liquid collecting bottle is arranged below the first transverse partition plate, a circular hole for the insertion part of the negative pressure buffer bottle to pass through is formed in the first transverse partition plate, the functional area is provided with a second transverse partition plate, a negative pressure suction pump and a relay are fixed above the second transverse partition plate, a control circuit board and a storage battery are fixed below the second transverse partition plate, and a notch is formed in the longitudinal partition plate.

Furthermore, the operation keys comprise a switch key, a camera switch key, a negative pressure suction pump adjusting key and a pleural cavity negative pressure target value setting key.

Further, the negative pressure buffer bottle comprises buffer bottle body and grafting portion integral type, and buffer bottle body and grafting portion are cylindric structure and buffer bottle body's external diameter and are greater than the external diameter of grafting portion, and the surface of grafting portion is equipped with the external screw thread, and the bottom of grafting portion is fixed with negative pressure transmission shutoff piece, open at the top of drainage liquid receiving flask has sunken type connecting portion, grafting portion insert connecting portion and with connecting portion threaded connection, be equipped with annular rubber packing ring between grafting portion and the connecting portion.

Furthermore, a drainage catheter through hole is formed in the center of the negative pressure transfer plugging piece, the negative pressure transfer plugging piece comprises a plugging base, a waterproof breathable film and a sealing cover, the waterproof breathable film is packaged between the plugging base and the sealing cover, and air holes are formed in the plugging base and the sealing cover.

Further, prevent subassembly against current including butt joint lid, duckbilled valve and accept the lid, the duckbilled valve is fixed in the butt joint lid and accepts between the lid, and drainage catheter is prevented the subassembly against current and is blocked for first drainage catheter and second drainage catheter, and first drainage catheter is fixed in the top of butt joint lid, and second drainage catheter is fixed in the bottom of accepting the lid, prevents that the subassembly against current sets up between first drainage catheter and second drainage catheter.

Furthermore, a processing chip, a digital-to-analog conversion module, an analog-to-digital conversion module, a power supply module, a wireless communication module and a data interface are fixed on the control circuit board, the digital-to-analog conversion module, the analog-to-digital conversion module, the power supply module and the wireless communication module are all connected with the processing chip, the data interface is connected with the digital-to-analog conversion module, the air pressure sensor is connected with the analog-to-digital conversion module, the relay is connected with the digital-to-analog conversion module, and the storage battery is connected with the processing chip through the power supply module.

The invention has the following beneficial effects: 1. the device utilizes the micropore camera to monitor the front end insertion condition of the thoracic drainage tube and the hydrops suction condition in the pleural cavity in real time, and the insertion and positioning do not need to be carried out by means of chest CT; 2. meanwhile, the device can also monitor the negative pressure in the pleural cavity in real time, and can intelligently disconnect a negative pressure switch of the negative pressure suction mechanism when the negative pressure value is stabilized at a normal negative pressure value, so that the problem that the lung is pulled under continuous negative pressure suction is prevented; 3. the device is internally provided with a miniature negative pressure suction mechanism, does not need to be externally connected with a traditional negative pressure suction machine, can carry out negative pressure drainage at any time and any place during the bed-leaving activity of a patient, and accelerates the drainage process of air and effusion in a pleural cavity; 4. the thoracic drainage tube of this device has the function of anti refluence, can prevent that the drainage liquid from flowing back to in the pleural cavity, and need not to carry out the pinches operation to the thoracic drainage tube when changing the drainage liquid receiving flask and can prevent that the outside air from getting into the pleural cavity, it is safer 5 to change the drainage liquid receiving flask, this device still can be with real-time supervision's picture and on pleural cavity's the pressure value data wireless transmission to patient and medical staff's mobile terminal, be convenient for patient and medical staff master the drainage condition in patient pleural cavity in real time and take further measure.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall structure of a pleural cavity drainage device after a lung injury;

FIG. 2 is a schematic view of the configuration of the thoracic drainage tube;

FIG. 3 is a schematic view showing the construction of the thoracic drainage tube;

FIG. 4 is a schematic cross-sectional view of the visual pressure monitoring probe;

FIG. 5 is a schematic diagram of the structure of the negative pressure drainage controller;

FIG. 6 is a connection structure of the negative pressure buffer bottle and the drainage liquid collection bottle;

FIG. 7 is a schematic view of the negative pressure transfer block piece;

FIG. 8 is a schematic cross-sectional view of the negative pressure buffer bottle and the drainage fluid collection bottle;

FIG. 9 is an enlarged view of a portion of the structure of FIG. 8;

fig. 10 is a structural arrangement diagram of the control circuit board.

In the drawings, the reference numbers indicate the following list of parts:

1-a intrathoracic drain, 2-a negative pressure drainage controller, 3-a data connecting line, 4-a display screen, 5-a drainage liquid collecting bottle, 6-an operation key, 7-a drainage tube, 8-a visual pressure monitoring catheter, 9-a drainage hole, 10-a visual pressure monitoring probe, 11-a data connector, 12-a micropore camera, 13-an LED light supplement and the like, 14-a waterproof breathable film, 15-a miniature circuit board, 16-an image coding module, 17-a singlechip, 18-a miniature air pressure sensor, 19-a data transmission module, 20-a packaging shell, 21-a bottom plate, 22-a switch key, 23-a camera switch key, 24-a negative pressure suction pump negative pressure increasing key 24, 25-a negative pressure suction pump negative pressure reducing key, 26-pleural cavity target value increasing button, 27-pleural cavity target value decreasing button, 28-negative pressure buffer bottle, 29-air pressure sensor, 30-drainage catheter, 31-connecting pipe, 32-negative pressure buffer bottle, 33-relay, 34-control circuit board, 35-storage battery, 36-longitudinal partition plate, 37-first transverse partition plate, 38-second transverse partition plate, 39-plug part, 40-negative pressure transmission blocking piece, 41-connecting part, 42-blocking base, 43-negative pressure transmission film, 44-sealing cover, 45-rubber gasket, 46-processing chip, 47-digital-to-analog conversion module, 48-power module, 49-analog-to-digital conversion module, 50-wireless communication module, 51-data interface, 301-docking cap, 302-receiving cap, 303-duckbill valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-3 and fig. 5, the pleural cavity drainage device after lung injury operation comprises a thoracic drainage tube 1 and a negative pressure drainage controller 2, the thoracic drainage tube is inserted into the negative pressure drainage controller, the thoracic drainage tube is connected with the negative pressure drainage controller 2 through a data connection line 3, the thoracic drainage tube 1 is composed of a drainage tube 7 and a visual pressure monitoring catheter 8, a drainage hole 9 is opened at the front end of the drainage tube 7, the visual pressure monitoring catheter is composed of a visual pressure monitoring probe 10 and a data transmission catheter, the drainage tube 7 and the visual pressure monitoring catheter 8 are encircled together to form a cylindrical structure, the visual pressure monitoring probe 10 is arranged at the foremost end of the thoracic drainage tube 1, the rear end of the data transmission catheter is branched out from the rear end of the thoracic drainage tube, and the rear end part is provided with a data connector 11, the top of the negative pressure drainage controller 2 is provided with a negative pressure drainage connector, a display screen 4 and an operation key 6 are arranged on the negative pressure drainage controller, a data interface is arranged on one side of the negative pressure drainage controller 2, a drainage liquid collecting bottle 5 is detachably inserted at the bottom of the negative pressure drainage controller 2, a negative pressure buffer bottle 28, a negative pressure suction pump 32, a relay 33, a control circuit board 34 and a storage battery 35 are fixed in the negative pressure drainage controller 2, the storage battery 35 is connected with the control circuit board 34, the control circuit board 34 is connected with the relay 33, the relay 33 is connected with the negative pressure suction pump 32, the negative pressure suction pump 32 is connected with the negative pressure buffer bottle 28 through a connecting pipe 31, an air pressure sensor 29 is fixed on the negative pressure buffer bottle 28, a drainage catheter 30 penetrating through the negative pressure buffer bottle is fixed on the negative pressure buffer bottle 28, an anti-reflux component is fixed on the top of the drainage catheter 30, and the negative pressure buffer bottle 28 is detachably connected with the drainage liquid collecting bottle 5, the drainage catheter 30 extends into the drainage liquid collecting bottle 5, and the thoracic drainage tube 1 is connected with the control circuit board 34 through a data connecting line.

After the negative pressure value is set, the negative pressure suction pump 32 sucks gas in the negative pressure buffer bottle 28 to enable the negative pressure buffer bottle 28 to be in a negative pressure state, the air pressure sensor 29 on the negative pressure buffer bottle 28 feeds the negative pressure value in the negative pressure buffer bottle 28 back to the control circuit board 34 in real time, the control circuit board 34 sends the negative pressure value in the negative pressure buffer bottle 28 to the display screen to be displayed so as to conveniently increase or reduce the negative pressure value generated by the negative pressure suction pump and prevent the lung from being pulled, the negative pressure of the negative pressure buffer bottle 28 is transmitted to the drainage fluid collecting bottle 5, physiological saline is contained in the drainage fluid collecting bottle 5, the negative pressure is transmitted to the drainage catheter through the physiological pressurized water, and the drainage catheter conducts negative pressure drainage on the gas or effusion in the pleural cavity;

the visual pressure monitoring probe 10 can detect the negative pressure value in the pleural cavity in real time and convert the negative pressure value in the pleural cavity into an electric signal, the electric signal is sent to the control circuit board 34 of the negative pressure drainage controller 2 through the data connection line 3, the control circuit board compares the real-time negative pressure value in the pleural cavity with a pleural cavity negative pressure target value, when the real-time negative pressure value in the pleural cavity is close to or equal to the pleural cavity negative pressure target value, the control circuit board 34 outputs a negative pressure suction pump stop work instruction to prevent continuous negative pressure suction from causing strain to the lung, and the relay 33 disconnects a power supply loop of the negative pressure suction pump after receiving the negative pressure suction pump stop work instruction to stop negative pressure drainage.

As shown in fig. 4, the district's section that drainage tube 7 and visual pressure monitoring pipe 8 encircle is semi-circular body, and the front end of drainage tube 7 is the wedge, is equipped with the identical face that coincide each other with the wedge of drainage tube on the data transmission pipe at visual pressure monitoring probe 10 rear, the top of visual monitoring probe 10 is fixed with the micropore camera module, and one side of visual monitoring probe is opened there is the negative pressure transfer hole, and the negative pressure transfer hole coats and is stamped waterproof ventilated membrane 14, and visual monitoring probe 10 internal fixation has the baroceptor module, is fixed with micropore camera 12 and LED light filling lamp 13 on the micropore camera module, and the baroceptor module includes miniature baroceptor 18 and microcircuit 15, and miniature baroceptor 18 is fixed in on microcircuit 15, and the miniature camera module is connected with microcircuit 15.

The micro-circuit board 15 is fixed with a single chip microcomputer 17, an image coding module 16 and a data transmission module 19, the micro-air pressure sensor 18 is connected with the single chip microcomputer 17, the image coding module and the data transmission module are both connected with the single chip microcomputer, the micro-pore camera module is respectively connected with the image coding module and the single chip microcomputer, a data transmission line is led out of the data transmission module, and the data transmission line is embedded in the data transmission conduit and connected with a data connector.

The micropore camera 12 can shoot in real time in the thoracic cavity membrane, the shot picture is coded by the image coding module 16 and then transmitted to the single chip microcomputer 17, the single chip microcomputer 17 transmits the coded image data to the control circuit board 34 through the data transmission module 19, and a processing chip of the control circuit board 34 decodes the coded image data and then sends the decoded image data to the display screen for displaying; the LED light supplement lamp 13 can reinforce light to display a clear picture, so that medical staff can conveniently position the inserted thoracic drainage tube according to the video picture.

The waterproof ventilated membrane 14 of visual monitoring probe 10 can make the negative pressure in the pleural cavity transmit to visual monitoring probe 10 in, but miniature baroceptor 18 real-time measurement pleural cavity's negative pressure value and convert the signal of telecommunication into, the signal of telecommunication of conversion is transmitted to the singlechip in, the singlechip transmits pleural cavity's negative pressure value to control circuit board 34 through data transmission module in, control circuit board 34 sends pleural cavity's real-time negative pressure value to and shows on the display screen, be convenient for medical staff master pleural cavity's negative pressure change and the recovery condition.

As shown in fig. 5, the negative pressure drainage controller 2 includes an enclosure 20 and a bottom plate 21, the enclosure may be made of transparent material, the enclosure is fixed with a display 4 and an operation button 5, the bottom plate 21 is fixed with a through-long longitudinal partition 36, the longitudinal partition 36 divides the bottom plate into a left drainage area and a right functional area, the drainage area is provided with a first transverse partition 37, the negative pressure buffer bottle 28 is fixed above the first transverse partition, the drainage liquid collection bottle 5 is arranged below the first transverse partition, the first transverse partition 37 is provided with a circular hole for the insertion part of the negative pressure buffer bottle 28 to pass through, the functional area is provided with a second transverse partition 38, the negative pressure suction pump 32 and the relay 33 are fixed above the second transverse partition, the control circuit board 34 and the storage battery 35 are fixed below the second transverse partition 38, and the longitudinal partition 36 is provided with a notch.

The operation keys comprise a switch key 22, a camera shooting switch key 23, a negative pressure suction pump adjusting key and a pleural cavity negative pressure target value setting key, the negative pressure suction pump adjusting key comprises a negative pressure suction pump negative pressure increasing key 24 and a negative pressure suction pump negative pressure reducing key 25, and the pleural cavity negative pressure target value setting key comprises a pleural cavity target value increasing key 26 and a pleural cavity target value reducing key 27.

As shown in fig. 6, the negative pressure buffer bottle 28 is integrally formed by a buffer bottle body and an insertion part 39, the buffer bottle body and the insertion part 39 are both cylindrical structures, the outer diameter of the buffer bottle body is larger than that of the insertion part 39, an external thread is arranged on the surface of the insertion part 39, a negative pressure transmission blocking piece 40 is fixed at the bottom of the insertion part 39, a concave type connecting part 41 is arranged at the top of the drainage fluid collecting bottle 5, the insertion part 39 is inserted into the connecting part 41 and is in threaded connection with the connecting part 41, and an annular rubber gasket 45 is arranged between the insertion part 39 and the connecting part 41.

As shown in fig. 7, a drainage catheter via hole is formed in the center of the negative pressure transfer block 40, the negative pressure transfer block includes a block base 42, a negative pressure transfer film 43 and a cover 44, the negative pressure transfer film 43 is packaged between the block base and the cover, vent holes are formed in the block base and the cover, the negative pressure transfer film 43 is a waterproof breathable film, the waterproof breathable film can allow negative pressure in the negative pressure buffer bottle 28 to pass through and transfer into the drainage fluid collection bottle 5, the drainage fluid collection bottle 5 transfers negative pressure into the drainage catheter 30 to achieve the purpose of negative pressure drainage, and negative pressure generated by the negative pressure suction pump is not directly transferred to the drainage catheter, but is transferred into the drainage fluid collection bottle through the negative pressure buffer bottle and then transferred into the drainage catheter 30 through physiological saline in the drainage fluid collection bottle, so that the negative pressure of the negative pressure suction pump can be prevented from being directly transferred into the pleural cavity to cause strain.

As shown in fig. 8-9, the assembly against current includes butt joint lid 301, duckbill valve 303 and accepts lid 302, duckbill valve 303 is fixed in butt joint lid 301 and accepts between the lid 302, drainage catheter 30 is blocked to first drainage catheter and second drainage catheter by the assembly against current, first drainage catheter is fixed in the top of butt joint lid, second drainage catheter is fixed in the bottom of accepting the lid, the assembly against current sets up between first drainage catheter and second drainage catheter, the assembly against current allows hydrops or gaseous flow to in the drainage fluid collecting bottle 5 of drawing forth in the pleural cavity, and gaseous or the unable backward flow of waste liquid in the drainage fluid collecting bottle 5 to prevent that the gaseous or the waste liquid of drainage from flowing back again to the pleural cavity and cause the infection to the pleural cavity.

As shown in fig. 10, a processing chip 46, a digital-to-analog conversion module 47, an analog-to-digital conversion module 49, a power supply module 48, a wireless communication module 50 and a data interface 51 are fixed on the control circuit board 34, the digital-to-analog conversion module 47, the analog-to-digital conversion module 49, the power supply module 48 and the wireless communication module 50 are all connected with the processing chip 46, the data interface 51 is connected with the digital-to-analog conversion module 47, the air pressure sensor 29 is connected with the analog-to-digital conversion module 49, the relay 33 is connected with the digital-to-analog conversion module 38, and the storage battery 35 is connected with the processing chip 46 through the power supply module 48.

In this embodiment, the single chip microcomputer is a 17-series single chip microcomputer, the processing chip 46 is an STM32F103 type chip, the image coding module is an image coding chip of haisi hi3516 type, the micro air pressure sensor is a BMP280 type air pressure sensor, the relay is a micro relay of G5V-2 type, the power supply module is an ASM1117-3.3V power supply chip, the analog-to-digital conversion module is an analog-to-digital conversion chip of AD0832 type, and the digital-to-analog conversion module is a digital-to-analog conversion chip of DAC8536 type.

One specific application of the device is as follows: injecting physiological saline into the drainage liquid collecting bottle 5, then inserting the drainage liquid collecting bottle 5 into the negative pressure drainage controller 2, rotating the drainage liquid collecting bottle 5 to enable the inserting part 39 of the negative pressure buffer bottle 28 to be in threaded connection with the drainage liquid collecting bottle 5, at the moment, inserting the drainage catheter 30 into the drainage liquid collecting bottle 5 and being sealed by water, inserting the thoracic drainage tube 1 onto a negative pressure connector of the negative pressure drainage controller 2, simultaneously connecting a data connector 11 at the rear end of the visual pressure monitoring catheter 8 to a data interface 51 of the negative pressure drainage controller 2 through a data connecting line 3, opening a power switch 22, and respectively setting a negative pressure suction value of the negative pressure suction pump 32 and a negative pressure target value in a pleural cavity through a negative pressure suction pump adjusting key and a negative pressure target value setting key; open switch button 23 of making a video recording, insert thoracic drainage tube 1 in patient's the thorax incision, the picture real-time transmission to control circuit board 34 that will shoot of the micropore camera 12 of thoracic drainage tube 1 front end this moment, control circuit board 34 sends the picture of shooting to and shows so that medical staff fixes a position the front end of thoracic drainage tube 1 on the display screen, should insert the location and need not to accomplish with the help of chest CT, both can improve thoracic drainage tube's the precision of putting into, can prevent again that patient and medical staff from receiving the injury of radiation.

After the visual pressure monitoring probe 10 of the thoracic drainage tube 1 reaches a target area, the micro negative pressure sensor can feed back the negative pressure value in the pleural cavity to the control circuit board 34, and the control circuit board 34 can send the negative pressure value in the pleural cavity to the display screen for displaying, so that medical staff can master the state of negative pressure drainage; the negative pressure suction pump 32 sucks the negative pressure buffer bottle 28, the negative pressure of the negative pressure buffer bottle 28 is transmitted into the drainage fluid collecting bottle 5 and is transmitted into the drainage catheter 30 through normal saline, the drainage catheter 30 sucks gas and accumulated fluid in the pleural cavity into the drainage fluid collecting bottle 5, and the backflow prevention assembly on the drainage catheter 30 can prevent the gas or waste fluid in the drainage fluid collecting bottle 5 from flowing back into the pleural cavity (especially when the negative pressure in the pleural cavity is changed rapidly under the deep breathing state of a patient), so as to prevent pleural cavity infection caused by backflow; when the negative pressure value in the pleural cavity is stabilized at a set value, the control circuit board 34 stops the negative pressure suction pump to prevent the lung from being pulled by the continuous negative pressure drainage; can see the hydrops drainage condition in the pleural cavity through the micropore camera, and miniature negative pressure sensor can show in real time whether the negative pressure value in the pleural cavity reaches the normal value, need not to advance chest CT once more to the patient and whether resume normal and carry out the tube drawing operation in order to judge. The small in size of this device, the integration has negative pressure to attract the mechanism, convenient to carry, and the patient can carry out the negative pressure drainage at any time and any place in the activity process of leaving the bed, can not receive the bulky restriction of traditional negative pressure drainage machine, and the device's negative pressure drainage is safer, can not cause the strain to the lung.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. The pleural cavity drainage device used after lung injury operation is characterized by comprising a thoracic drainage tube and a negative pressure drainage controller, wherein the thoracic drainage tube is inserted into the negative pressure drainage controller, the thoracic drainage tube is connected with the negative pressure drainage controller through a data connection wire, the thoracic drainage tube consists of a drainage tube and a visual pressure monitoring catheter, the front end of the drainage tube is provided with a drainage hole, the visual pressure monitoring catheter consists of a visual pressure monitoring probe and a data transmission catheter, the drainage tube and the visual pressure monitoring catheter encircle to form a cylindrical structure, the visual pressure monitoring probe is arranged at the foremost end of the thoracic drainage tube, the rear end of the data transmission catheter is forked out from the rear end of the thoracic drainage tube, the rear end of the data transmission catheter is provided with a data connector, the top of the negative pressure drainage controller is provided with a negative pressure drainage connector, the negative pressure drainage controller is provided with a display screen and an operation key, one side of the negative pressure drainage controller is provided with a data interface, the bottom of the negative pressure drainage controller is detachably inserted with a drainage liquid collecting bottle, a negative pressure drainage bottle, a relay, a control circuit board and a storage battery are connected with a negative pressure drainage buffer bottle, the negative pressure drainage bottle is detachably connected with a negative pressure drainage buffer bottle, and a negative pressure drainage buffer bottle is connected with a buffer bottle, and a negative pressure drainage buffer bottle is connected with a negative pressure drainage buffer bottle.

2. The pleural cavity drainage device after lung injury surgery according to claim 1, wherein the drainage tube and the surrounding section of the visual pressure monitoring catheter are semicircular tubes, the front end of the drainage tube is a wedge-shaped surface, an anastomotic surface matched with the wedge-shaped surface of the drainage tube is arranged on the data transmission catheter behind the visual pressure monitoring probe, a micropore camera module is fixed at the top end of the visual monitoring probe, a negative pressure transmission hole is formed in one side of the visual monitoring probe, a waterproof breathable film covers the negative pressure transmission hole, an air pressure sensor module is fixed in the visual monitoring probe, a micropore camera and an LED light supplement lamp are fixed on the micropore camera module, the air pressure sensor module comprises a miniature air pressure sensor and a miniature circuit board, the miniature air pressure sensor is fixed on the miniature circuit board, and the miniature camera module is connected with the miniature circuit board.

3. The pleural cavity drainage device after lung injury surgery according to claim 2, wherein a single-chip microcomputer, an image coding module and a data transmission module are fixed on the miniature circuit board, the miniature air pressure sensor is connected with the single-chip microcomputer, the image coding module and the data transmission module are both connected with the single-chip microcomputer, the microporous camera module is respectively connected with the image coding module and the single-chip microcomputer, a data transmission line is led out from the data transmission module, and the data transmission line is embedded in the data transmission catheter and is connected with the data connector.

4. The pleural cavity drainage device after lung injury surgery according to claim 2, wherein the negative pressure drainage controller comprises an enclosure and a bottom plate, the enclosure can be made of transparent material, the enclosure is fixed with a display screen and operation buttons, the bottom plate is fixed with a through longitudinal partition plate, the longitudinal partition plate divides the bottom plate into a left drainage area and a right functional area, the drainage area is provided with a first transverse partition plate, a negative pressure buffer bottle is fixed above the first transverse partition plate, a drainage liquid collecting bottle is arranged below the first transverse partition plate, the first transverse partition plate is provided with a circular hole for the insertion part of the negative pressure buffer bottle to pass through, the functional area is provided with a second transverse partition plate, a negative pressure suction pump and a relay are fixed above the second transverse partition plate, a control circuit board and a storage battery are fixed below the second transverse partition plate, and the longitudinal partition plate is provided with a notch.

5. The pleural cavity drainage device after lung injury surgery of claim 4, wherein the operation buttons comprise a switch button, a camera switch button, a negative pressure suction pump adjusting button and a pleural cavity negative pressure target value setting button.

6. The pleural cavity drainage device after lung injury surgery according to claim 1, wherein the negative pressure buffer bottle is integrally composed of a buffer bottle body and an insertion part, the buffer bottle body and the insertion part are both of a cylindrical structure, the outer diameter of the buffer bottle body is larger than that of the insertion part, an external thread is arranged on the surface of the insertion part, a negative pressure transmission blocking piece is fixed at the bottom of the insertion part, a sunken connecting part is arranged at the top of the drainage fluid collecting bottle, the insertion part is inserted into the connecting part and is in threaded connection with the connecting part, and an annular rubber gasket is arranged between the insertion part and the connecting part.

7. The pleural cavity drainage device of claim 6, wherein the negative pressure transfer block has a drainage catheter hole at the center, the negative pressure transfer block comprises a block base, a negative pressure transfer membrane and a cover, the negative pressure transfer membrane is enclosed between the block base and the cover, and the block base and the cover have air holes.

8. The pleural cavity drainage device of claim 1, wherein the anti-reflux assembly comprises a docking cover, a duckbill valve and a receiving cover, the duckbill valve is fixed between the docking cover and the receiving cover, the drainage catheter is blocked into a first drainage catheter and a second drainage catheter by the anti-reflux assembly, the first drainage catheter is fixed at the top of the docking cover, the second drainage catheter is fixed at the bottom of the receiving cover, and the anti-reflux assembly is arranged between the first drainage catheter and the second drainage catheter.

9. The pleural cavity drainage device after lung injury surgery according to claim 1, wherein a processing chip, a digital-to-analog conversion module, an analog-to-digital conversion module, a power supply module, a wireless communication module and a data interface are fixed on the control circuit board, the digital-to-analog conversion module, the analog-to-digital conversion module, the power supply module and the wireless communication module are all connected with the processing chip, the data interface is connected with the digital-to-analog conversion module, the air pressure sensor is connected with the analog-to-digital conversion module, the relay is connected with the digital-to-analog conversion module, and the storage battery is connected with the processing chip through the power supply module.