CN220125287U

CN220125287U - Combined device capable of monitoring external pressure of air bag and adjusting air bag volume in feedback mode

Info

Publication number: CN220125287U
Application number: CN202321610584.5U
Authority: CN
Inventors: 郑文贺
Original assignee: Second People's Hospital Of Fujian University Of Traditional Chinese Medicine
Current assignee: Second People's Hospital Of Fujian University Of Traditional Chinese Medicine
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2023-12-05
Anticipated expiration: 2033-06-25

Abstract

The utility model relates to a combined device capable of monitoring the external pressure of an air bag and adjusting the volume of the air bag in a feedback way, belonging to the technical field of medical appliances, comprising an autogenous cutting catheter body, wherein the autogenous cutting catheter body comprises a catheter tube, the proximal end of the catheter tube is sleeved with the air bag body, three mutually independent air bag cavities are arranged in the air bag body, and the outer wall of each air bag cavity is provided with an air bag outer film type pressure sensor for monitoring the outer wall pressure of each corresponding air bag cavity in real time; the device also comprises an air bag volume adjusting device for adjusting the volume of the air in each air bag cavity in a feedback way. The utility model continuously monitors the internal pressure and the external pressure of the air bags in each area, thereby realizing the real-time warning of the position deviation of the tracheostomy tube and the pressure condition of the mucous membrane of the local airway so as to make adjustment in time; the air sac can be used for periodically massaging the airway mucous membrane while ensuring that the extracapsular pressure is in a safe range, so that the compression injury of the airway mucous membrane is relieved to the greatest extent.

Description

Combined device capable of monitoring external pressure of air bag and adjusting air bag volume in feedback mode

Technical Field

The utility model relates to a combined device capable of monitoring the external pressure of an air bag and adjusting the volume of the air bag in a feedback way, and belongs to the technical field of medical appliances.

Background

Tracheotomy establishes an artificial airway, which is the primary means of long-term respiratory support and airway protection for clinically critical patients. To achieve the closure of ventilator ventilation and entrapment of upper airway secretions, the tracheostomy tube closes the airway with an inflatable balloon.

At present, a single-cavity low-pressure high-capacity air bag is clinically adopted, and the internal pressure of the air bag is monitored to keep the air bag at 25-30cmH ₂ And O. The balloon internal pressure in this pressure region is considered to be relatively small in compression injury to the airway mucosa as well as to seal the airway well. Various autogenous cutting catheter bodies and pressure monitoring and adjusting devices for monitoring the pressure in the air sac are also developed in succession in clinic.

However, although such an autogenous cutting cannula and intra-balloon pressure management strategy is widely used, complications such as tracheal mucosa injury, scar, ulcer, polyp growth, poor catheter placement and the like at the balloon still frequently occur clinically, and serious airway hemorrhage and esophageal tracheal fistula are even combined, so that great harm is brought to the life safety of patients.

The pressure between the balloon wall and the airway mucosa is the root cause of the airway injury complications. The air sac internal pressure is only an indirect pressure index, and the pressure between the air sac wall and the airway mucosa is difficult to truly reflect.

Firstly, whether the pressure in the air sac is safe and useful depends on the matching degree between the autogenous cutting sleeve pipe and the inner diameter of the trachea, for example, an adult strong male patient is selected to be inserted into the autogenous cutting sleeve pipe of F6.5, and even if the pressure in the air sac is seriously out of standard, the sealing effect of the air sac on the air passage can not be met; in contrast, a slim female was selected to insert an autogenous cutting cannula of F7.5, and even in a state of low intra-balloon pressure, severe compression had been generated on airway mucosa, resulting in the occurrence of complications.

Secondly, the autogenous cutting sleeve pipe is half arc structure, and the gasbag is in half saturated condition generally, and the axial of pipe shaft and air flue is unanimous and is placed in the middle. However, in clinical practice, due to the difference of the anatomical trend of the airway, the difference of the thickness of the soft tissue in front of the trachea and the difference of the thickness of the soft tissue in front of the trachea, the connection and the traction of the breathing machine pipeline to the autogenous cutting sleeve pipe, the autogenous cutting catheter body is often in a poor-position state in the trachea, including up-down displacement and left-right displacement. When the catheter is in poor position, the air bag can redistribute air under the condition of unchanged internal pressure, so that the serious compression state of local airway mucous membrane is covered, and then airway complications occur.

The tracheal cannula for monitoring the cuff pressure in real time disclosed in Chinese patent publication No. CN112156306B comprises a pressure monitoring display device, an inflation tube, an elastic film, a cuff and a tube body; wherein, one end of the tube body is a machine connecting end, the other end is a patient connecting end, and the cuff is sleeved on the tube body close to the patient connecting end; one end of the inflation tube is communicated with the cuff, the other end of the inflation tube is communicated with the pressure monitoring display device, the elastic film is arranged on the pressure monitoring display device, the pressure monitoring display device comprises a pressure sensor, a circuit, a digital screen and a power module, the pressure sensor, the digital screen and the circuit are connected, the pressure sensor is used for collecting the pressure of the cuff, and the power module is used for supplying power for the pressure monitoring display device.

The above-mentioned reference example provides various convenient designs on the problem of pressure monitoring in the balloon of the autogenous cutting catheter, but does not solve the fundamental problem of how to keep the pressure between the outer wall of the balloon and the airway mucosa in a safe range, so improvement is urgently needed.

Disclosure of Invention

In order to overcome the defect that the existing single-cavity air bag autogenous cutting sleeve pipe cannot early warn the poor position of a catheter and further cause airway damage complications, the utility model designs a combined device capable of monitoring the external pressure of an air bag and adjusting the volume of the air bag in a feedback manner, and the combined device can early warn the position deviation of the catheter and the pressure condition of airway mucosa caused by the position deviation in real time by continuously monitoring the internal pressure and the external pressure of the air bag in each area so as to be capable of timely adjusting the catheter; and the normal vestibule fluctuation of the external pressure of the air sac in the safety range is set through a program, so that the compression injury of the airway mucous membrane is relieved to the greatest extent.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a can monitor combination device of gasbag external pressure and feedback adjustment gasbag volume, includes the autogenous cutting pipe body, the autogenous cutting pipe body includes the pipe shaft, and pipe shaft proximal end cover is equipped with the gasbag body, the inside three bag chamber that is provided with mutually independent of gasbag body is bag chamber A, bag chamber B and bag chamber C respectively, bag chamber A contacts with the mucosa of upper left side of air flue, bag chamber B contacts with the mucosa of upper right side of air flue, bag chamber C contacts with the mucosa of air flue back side portion, and each bag chamber outer wall laminating is provided with the gasbag adventitia formula pressure sensor that is used for each corresponding bag chamber outer wall pressure of real-time supervision; the device also comprises an air bag volume adjusting device for adjusting the inner volume of each air bag cavity according to the outer wall pressure fed back by the air bag outer membrane type pressure sensor.

Further, the gasbag volume adjusting device comprises a host, the host is provided with a partitioned gasbag external pressure data input end and a partitioned gasbag inflating and deflating output end, a controller and miniature positive and negative pressure diaphragm pumps which are respectively in one-to-one correspondence with the gasbag cavities are arranged in the host, each gasbag external membrane type pressure sensor is electrically connected with the controller through the partitioned gasbag external pressure data input end, each miniature positive and negative pressure diaphragm pump is respectively in one-to-one correspondence with each gasbag cavity through the partitioned gasbag inflating and deflating output end, and each miniature positive and negative pressure diaphragm pump is electrically connected with the controller.

Further, the inflation port and the deflation port of the miniature positive and negative pressure diaphragm pump are connected through a Y-shaped pipe, a Y-shaped split electromagnetic valve is arranged at the intersection of pipelines of the Y-shaped pipe, and an extension pipe of the Y-shaped pipe is connected with the regional inflation and deflation output end of the air bag; the extension pipe of the Y-shaped pipe is connected with an air bag partition pressure monitoring side pipe, the air bag partition pressure monitoring side pipe is provided with a pressure transducer for monitoring the internal pressure of the air bag cavity, and the pressure transducer is electrically connected with a controller.

Further, the host is also provided with a display screen for displaying dynamic monitoring data and graphics of the outer membrane type pressure sensors of the air bags, an alarm indicator for alarming abnormal pressure in and out of the air bag body and a power switch for switching on or off power supply in the host.

Further, a water-wetting coating is arranged on the outer wall of the air bag body.

Further, an adjustable fixed handle capable of movably adjusting tightness is sleeved at the distal end of the catheter tube, and a standard interface is arranged at the distal end of the catheter tube; three air bag partition inflation and deflation interfaces are arranged on the adjustable fixed handle, the three air bag partition inflation and deflation interfaces are respectively connected with each air bag cavity in a one-to-one correspondence manner through three inflation pipes, and the three air bag partition inflation and deflation interfaces are connected with air bag partition inflation and deflation output ends; the adjustable fixed handle is further provided with an air bag external pressure output interface, the air bag external pressure output interface is electrically connected with each air bag external film type pressure sensor through data wires, each data wire is arranged inside the catheter tube body, one end of each data wire stretches into the corresponding air bag cavity, and the air bag external pressure output interface is electrically connected with the partitioned air bag external pressure data input end.

Further, the catheter tube body comprises a tube body working section, a tube body fixing section and a tube body branching section which are sequentially and integrally arranged, the standard interface is arranged at the free end of the tube body branching section, the adjustable fixing handle is sleeved on the tube body fixing section, and the air bag body is sleeved on the tube body working section at a position close to the end part; the air bag partition inflating and deflating interface and the air bag external pressure output interface are both arranged on the pipe body branch section.

Further, the suction hole on the bag is arranged at the upper position of the back side of the pipe body, which is close to the air bag body, the transition pipe communicated with the suction hole on the bag is arranged in the pipe body working section, the free end of the transition pipe extends to the pipe body branch section along the pipe body working section, and the suction pipe on the bag communicated with the transition pipe is arranged on the side surface of the pipe body branch section.

Further, a sleeving hole is formed in the adjustable fixing handle, a tightening crack is formed in one side of the sleeving hole, the width of the tightening crack is adjusted through a tightening device, the tightening device comprises a tightening rod and a tightening nut, the tightening rod transversely penetrates through the adjustable fixing handle and penetrates through the tightening crack, and two ends of the tightening rod extend out of the adjustable fixing handle and are connected with the tightening nut through threads.

Furthermore, the inner ring of the sleeve joint hole is provided with a first concave-convex texture, and the outer surface of the pipe body fixing section is provided with a second concave-convex texture meshed with the first concave-convex texture.

Compared with the prior art, the utility model has the following characteristics and beneficial effects:

according to the utility model, through the design of the three subareas of the air bag and the pressure monitoring of the inner subarea and the outer subarea of the air bag, the poor position of the catheter and the serious compression of the catheter on the local airway mucous membrane can be early warned in time, and the position of the fixed handle is regulated under the pressure monitoring of the inner pressure and the outer pressure of the air bag, and the measures of removing the traction force of a pipeline of the breathing machine and the like are taken, so that the position of the catheter is centered; and the inflation and deflation of the inside of each bag can be realized through instructions, so that the pressure outside each bag in each region is in sine wave mode fluctuation within a safety range (5-15 cm H2 o), and the airway complications caused by using the autogenous cutting sleeve pipe are avoided to the greatest extent.

Drawings

FIG. 1 is a schematic view of the structure of an autogenous cutting catheter body of the utility model;

FIG. 2 is a schematic structural view of the air bag volume adjusting device of the present utility model;

FIG. 3 is a schematic diagram of the connection of the pressure/capacity feedback regulation of the present utility model;

FIG. 4 is a cross-sectional view of the balloon body of the present utility model mated with a catheter shaft;

FIG. 5 is a schematic view of a partial structure of a catheter shaft of the present utility model;

FIG. 6 is a schematic illustration of the cooperation of the adjustable securing lever with the tightening mechanism of the present utility model.

Wherein the reference numerals are as follows:

1. an airbag body; 2. a catheter shaft; 21. a pipe body working section; 22. a pipe body fixing section; 23. a pipe body branch section; 3. an adjustable fixed handle; 4. a standard interface; 5. an elastic device; 6. suction holes on the bag; 7. an air bag outer membrane type pressure sensor; 71. a sensor A; 72. a sensor B; 73. a sensor C; 8. an upper suction tube; 9. an air bag partition inflation/deflation interface; 91. an inner end A of the inflatable catheter balloon; 92. an inner end B of the inflatable catheter balloon; 93. an inner end C of the inflatable catheter balloon; 10. an air bag external pressure output interface; 11. a fixed handle lacing hole; 12. a socket hole; 13. tightness cracks; 14. a tightening rod; 15. screwing the nut; 16. the external pressure data input end of the subarea air bag; 17. the gasbag is partitioned to charge and discharge the output end; 18. a display screen; 19. a host; 20. a power switch; 24. a controller; 25. a miniature positive-negative pressure diaphragm pump; 26. y-type lane solenoid valve; 27. side pipes for monitoring the pressure of the air bags in a partitioning way; 28. a pressure transducer; 29. an airbag inflation passage; 30. an air bag deflating passage; 31. an alarm indicator light; 32. a Y-shaped tube; 101. a sensor line a; 102. a sensor line B; 103. sensor line C.

Detailed Description

The present utility model will be described in more detail with reference to examples.

Example 1

Referring to fig. 1, 2 and 3, the combined device capable of monitoring the external pressure of an air bag and adjusting the volume of the air bag in a feedback manner in the embodiment comprises an autogenous cutting catheter body, wherein the autogenous cutting catheter body comprises a catheter tube body 2, the proximal end of the catheter tube body 2 is sleeved with an air bag body 1, three mutually independent air bag cavities, namely an air bag cavity A, an air bag cavity B and an air bag cavity C, are arranged in the air bag body 1, are separated by a diaphragm, the air bag cavity A is contacted with a mucous membrane on the left upper side of an air passage, the air bag cavity B is contacted with a mucous membrane on the right upper side of the air passage, the air bag cavity C is contacted with a mucous membrane on the back side of the air passage, and the outer walls of the air bag cavities are respectively attached with an air bag outer membrane type pressure sensor 7 for monitoring the outer wall pressure of each corresponding air bag cavity in real time;

the design of the three bag cavities avoids the phenomenon of equal pressure volume redistribution in the bag when the position of the tube body of the autogenous cutting catheter body is bad, and further can effectively early warn the position bad of the autogenous cutting catheter body and the local airway mucosa compression caused by the position bad.

And the device also comprises an air bag volume adjusting device for adjusting the inner volume of each air bag cavity according to the outer wall pressure fed back by the air bag outer membrane pressure sensor 7.

Specifically, the air bag outer membrane type pressure sensor 7 comprises a sensor A71 for monitoring the outer wall pressure of each air bag cavity A, a sensor B72 for monitoring the outer wall pressure of each air bag cavity B and a sensor C73 for monitoring the outer wall pressure of each air bag cavity C, and the outer wall pressure of each air bag can be monitored in real time by arranging the sensor A71, the sensor B72 and the sensor C73, so that the compression degree and the air passage sealing degree of the air passage mucosa at the corresponding position can be obtained.

From the above description, the beneficial effects of the present utility model are as follows: the utility model avoids the equal pressure volume redistribution phenomenon in the air bag through the design of three air bag cavities; the pressure monitoring of the inner partition and the outer partition of the air bag can be utilized to effectively early warn and identify the poor position of the autogenous cutting catheter body and the airway mucosa compression caused by the poor position of the autogenous cutting catheter body, and evaluate whether the position of the catheter is corrected or not; meanwhile, through the internal volume adjustment of the feedback air bag, the periodic fluctuation of the external pressure of the air bag in a safety range is realized, and the compression injury of the airway mucous membrane is relieved to the greatest extent.

Referring to fig. 3, the air bag volume adjusting device includes a main unit 19, wherein a partitioned air bag external pressure data input end 16 and an air bag partitioned air charging and discharging output end 17 are provided on the main unit 19, a controller 24 and miniature positive and negative pressure diaphragm pumps 25 corresponding to each air bag cavity one by one are provided inside the main unit 19, each air bag external film type pressure sensor 7 is electrically connected with the controller 24 through the partitioned air bag external pressure data input end 16, each miniature positive and negative pressure diaphragm pump 25 is respectively communicated with each air bag cavity one by one through the air bag partitioned air charging and discharging output end 17, and each miniature positive and negative pressure diaphragm pump 25 is electrically connected with the controller 24.

As can be seen from the above description, the pressure data monitored by the air bag outer membrane type pressure sensor 7 is input to the controller 24 through the partition air bag outer pressure data input end 16, the controller 24 monitors the pressure data according to a preset program, when the pressure data of a certain air bag cavity is abnormal, the controller 24 sends an inflation instruction or a deflation instruction to the micro positive and negative pressure diaphragm pump 25, the micro positive and negative pressure diaphragm pump 25 receives the corresponding instruction and then inflates and deflates the air bag cavity, so that the pressure in the air bag cavity can be efficiently and accurately regulated, and the real-time monitoring is realized through the air bag outer membrane type pressure sensor 7, so that the real-time monitoring through the controller 24 is realized, the real-time regulation of the volume of the air bag cavity is realized, and the outer pressure of the air bag cavity is always in a safe range (5-15 cmH ₂ O)。

Further, the inflation port and the deflation port of the micro positive and negative pressure diaphragm pump 25 are connected through a Y-shaped pipe 32, a Y-shaped channel separating electromagnetic valve 26 is arranged at the intersection of the pipelines of the Y-shaped pipe 32, and the extension pipe of the Y-shaped pipe 32 is connected with the regional inflation and deflation output end 17 of the air bag; the extension tube of the Y-shaped tube 32 is connected with an air bag partition pressure monitoring side tube 27, and the air bag partition pressure monitoring side tube 27 is provided with a pressure transducer 28 for monitoring the pressure inside the air bag cavity, and the pressure transducer 28 is electrically connected with the controller 24.

Specifically, the Y-shaped tube 32 comprises an extension tube and two branch tubes, one ends of the two branch tubes are communicated with the extension tube, the other ends of the two branch tubes are respectively connected with an inflation port and a deflation port of the miniature positive and negative pressure diaphragm pump 25, a Y-shaped branch solenoid valve 26 is arranged at the junction of the two branch tubes and the extension tube, and the Y-shaped branch solenoid valve 26 is electrically connected with the controller 24, so that the conduction of the branch tubes is conveniently controlled, and the mutual interference of inflation and deflation is effectively avoided;

the specific control process is as follows: by synchronously adjusting the inflation or deflation of the micro positive and negative pressure diaphragm pump 25 and the clamping of corresponding pipelines of the Y-shaped channel dividing electromagnetic valve 26, a switchable air bag inflation passage 29 and an air bag deflation passage 30 are formed, so that each air bag cavity is inflated or deflated independently.

As can be seen from the above description, by setting the Y-tube 32 and the Y-channel solenoid valve 26, the micro positive and negative pressure diaphragm pump 25 is convenient to realize inflation and deflation of the capsule according to inflation and deflation instructions, and meanwhile, by setting the side tube 27 and the pressure transducer 28 for monitoring the pressure in the capsule by the pressure transducer 28 in a partitioning manner, the controller 24 can receive the pressure in the capsule monitored by the pressure transducer 28 in real time, so that the controller 24 can monitor the pressure inside and outside the capsule conveniently, and the position of the tube body is found bad in time.

Further, the host 19 is further provided with a display screen 18 for displaying dynamic monitoring data and graphics of the outer membrane type pressure sensors 7 of each air bag, an alarm indicator 31 for alarming abnormal internal and external pressures of the air bag body 1, and a power switch 20 for turning on or off internal power supply of the host 19, and the display screen 18 and the alarm indicator 31 are electrically connected with the controller 24.

As can be seen from the above description, the display 18 can be configured to more intuitively see the pressure data inside and outside the capsule cavity, and can dynamically display the pressure data in real time, and the alarm indicator 31 can effectively remind medical staff of abnormal pressure data, so that the power switch 20 can cut off power supply and can be safely stored when not in use.

Particularly, in this embodiment, the controller 24 not only can obtain the inner and outer pressure change states of each balloon region and the deviation condition of the tube body of the alarm autogenous cutting catheter body according to the pressure feedback of the balloon outer membrane type pressure sensor 7 and the pressure transducer 28, so as to facilitate timely correction and treatment, but also can make the micro positive and negative pressure diaphragm pump 25 charge/discharge by adjusting the pressure in each balloon cavity within a safe range, and realize that the pressure outside the balloon is within the safe range (5-15 cmH ₂ O) periodically positively and continuously fluctuating, and further realizing the minimization of the damage of the airway mucosa compression;

in this embodiment, the display screen 18 dynamically displays the intracapsular pressure values and the extracapsular pressure values of the capsule cavity a, the capsule cavity B and the capsule cavity C in real time through animation patterns, and respectively identifies dangerous, medium and safe pressure intervals in red, yellow and green, and simultaneously displays the alarm indicator lamp 31 in corresponding colors, and simultaneously can dynamically display the extracapsular pressure change of each periodic positive-brown waveform.

Further, a water-wetting coating is arranged on the outer wall of the air bag body 1.

As is apparent from the above description, the provision of the water-wet coating layer can reduce friction and shear force between the balloon body 1 and the airway mucosa to the maximum extent and reduce airway mucosa damage.

Example two

The combination device capable of monitoring the external pressure of the air bag and adjusting the volume of the air bag in a feedback manner in the present embodiment further defines the overall connection relationship of the catheter tube 2 on the basis of the first embodiment as follows:

referring to fig. 1, 4, 5 and 6, an adjustable fixing handle 3 capable of movably adjusting tightness is sleeved at the distal end of a catheter tube 2, a standard interface 4 is arranged at the distal end of the catheter tube 2, and the tightness of the adjustable fixing handle 3 is adjusted up and down along the catheter tube 2;

three air bag partition inflation and deflation interfaces 9 are arranged on the pipe body branch section 23, the three air bag partition inflation and deflation interfaces 9 are respectively connected with each air bag cavity in a one-to-one correspondence manner through three inflation pipes, and the three air bag partition inflation and deflation interfaces 9 are connected with air bag partition inflation and deflation output ends 17;

referring to fig. 1 and 4, three air bag partition inflation and deflation interfaces 9 are respectively and correspondingly connected with an inflation conduit inner end a91, an inflation conduit inner end B92 and an inflation conduit inner end C93, the inflation conduit inner end a91 is communicated with the air bag cavity a, the inflation conduit inner end B92 is communicated with the air bag cavity B, the inflation conduit inner end C93 is communicated with the air bag cavity C, the micro positive and negative pressure diaphragm pump 25 receives an inflation instruction to inflate, and then the inflation instruction is transmitted to the air bag partition inflation and deflation interfaces 9 through the Y-shaped pipe 32 and then transmitted to the corresponding air bag cavity, and the gas is reversely output during deflation;

the pipe body branch section 23 is also provided with an air bag external pressure output interface 10, the air bag external pressure output interface 10 is electrically connected with each air bag external film type pressure sensor 7 through data wires, each data wire is arranged inside the pipe body 2 of the catheter, one end of each data wire stretches into the corresponding air bag cavity, and the air bag external pressure output interface 10 is electrically connected with the partitioned air bag external pressure data input end 16;

referring to fig. 1 and 4, the air bag external pressure output interface 10 is connected to a sensor circuit a101, a sensor circuit B102 and a sensor circuit C103, wherein the sensor circuit a101 is disposed in the air bag cavity a and is connected to the air bag external film type pressure sensor 7 corresponding to the air bag cavity a, the sensor circuit B102 is disposed in the air bag cavity B and is connected to the air bag external film type pressure sensor 7 corresponding to the air bag cavity B, and the sensor circuit C103 is disposed in the air bag cavity C and is connected to the air bag external film type pressure sensor 7 corresponding to the air bag cavity C.

As can be seen from the above description, the setting of the adjustable fixing handle 3 facilitates the adjustment and fixing of the catheter tube 2, the setting of the air bag partition inflation/deflation interface 9 facilitates the butt joint of the air bag partition inflation/deflation output end 17, and further realizes the inflation/deflation adjustment pressure in the air bag cavity, and the setting of the air bag external pressure output interface 10 facilitates the butt joint of the partition air bag external pressure data input end 16, so that the monitored air bag external wall pressure and the monitored pressure in the air bag cavity are conveniently transmitted to the controller 24 through the partition air bag external pressure data input end 16.

Further, the catheter tube 2 comprises a tube working section 21, a tube fixing section 22 and a tube branching section 23 which are sequentially and integrally arranged, the standard interface 4 is arranged at the free end of the tube branching section 23, the adjustable fixing handle 3 is sleeved on the tube fixing section 22, and the air bag body 1 is sleeved on the tube working section 21 at a position close to the end part; the air bag partition inflation and deflation interface 9 and the air bag external pressure output interface 10 are both arranged on the pipe body branch section 23;

the upper position of the back side of the pipe body working section 21, which is close to the airbag body 1, is provided with an upper bag suction hole 6, a transition pipe communicated with the upper bag suction hole 6 is arranged inside the pipe body working section 21, the free end of the transition pipe extends to a pipe body branch section 23 along the pipe body working section 21, and the side surface of the pipe body branch section 23 is provided with an upper bag suction pipe 8 communicated with the transition pipe;

the adjustable fixing handle 3 is provided with a sleeve joint hole 12, one side of the sleeve joint hole 12 is provided with an elastic slit 13, the elastic slit 13 is used for adjusting the width through the elastic device 5, the elastic device 5 comprises a tightening rod 14 and a tightening nut 15, the tightening rod 14 transversely and movably penetrates through the adjustable fixing handle 3 and is arranged through the elastic slit 13, and two ends of the tightening rod 14 extend out of the adjustable fixing handle 3 and are connected with the tightening nut 15 through threads.

Specifically, in this embodiment, the adjustable fixing handle 3 is provided with a pair of fixing handle lacing holes 11 symmetrically arranged at two sides of the sleeving hole 12, and the fixing handle lacing holes 11 are provided to facilitate the passing of the binding rope, so that the adjustable fixing handle 3 can be fixed at the neck of the patient through the binding rope.

From the above description, the sleeve hole 12 is used for sleeving the pipe body fixing section 22, the elastic slit 13 is convenient for the elastic device 5 to adjust the tightness of the sleeve hole 12, the elastic device 5 can clamp by arranging the tightening rod 14 and the tightening nuts 15 and can adjust and fix the position of the fixing handle 3 on the pipe body fixing section 22 up and down by tightening the tightening nuts 15 at two ends of the tightening rod 14.

Further, the inner ring of the sleeve hole 12 is provided with a first concave-convex texture, and the outer surface of the pipe body fixing section 22 is provided with a second concave-convex texture meshed with the first concave-convex texture.

It can be seen from the above description that, by setting the first concave-convex texture and the second concave-convex texture, the socket hole 12 and the pipe body fixing section 22 are convenient to be clamped and fixed, and the tightness of the socket hole 12 is adjusted by the elastic device 5, so that the pipe body fixing section 22 can be well fixed, and meanwhile, poor positions of the pipe body 2 of the catheter can be avoided, so that the autogenous cutting sleeve body is suitable for people with various pre-tracheal depths.

The working principle of the utility model is as follows:

1. the autogenous cutting catheter is kept somewhere: after the tracheostoma is successful, the tracheostoma is put into an autogenous cutting catheter body according to a conventional method, and each sac cavity is properly inflated primarily and is connected with a breathing machine for assisting breathing; two layers of gauze are covered between the catheter tube 2 and the skin, and the two side laces of the adjustable fixing handle 3 are fixed on the neck;

2. the feedback air bag volume adjusting device is connected with: correspondingly connecting the air bag external pressure output interface 10 with the partitioned air bag external pressure data input end 16; the air bag partition inflation and deflation interface 9 is correspondingly connected with the air bag partition inflation and deflation output end 17, the power switch 20 is pressed down, and the machine is started;

3. preliminary adjustment of internal and external pressure of each subarea air bag: according to the state of the pressure outside each capsule cavity, the air bag volume adjusting device performs feedback inflation or deflation to adjust the pressure inside each capsule cavity so that the pressure outside each capsule cavity is below the safety limit, namely less than or equal to 15cmH ₂ O；

If the catheter tube 2 in the airway is obviously deviated, the external pressure of a certain capsule cavity is continuously more than or equal to 20cmH ₂ O, and/or the internal pressure of the capsule is less than 15cmH ₂ O, the poor position of the catheter tube 2 is displayed and an alarm is given through the device display screen 18 and the alarm indicator lamp 31, and the position of the catheter tube 2 is required to be adjusted;

4. position adjustment of the catheter shaft 2: firstly, separating from a breathing machine pipeline connected with the autogenous cutting catheter body, observing the pressure condition outside each sac cavity, and adjusting the position of the adjustable fixed handle 3 through movable adjustment to keep the internal/external pressure of each sac body 1 balanced, so as to show that the autogenous cutting catheter body is centered in the static position;

then connecting the breathing machine pipeline, adjusting the support and fixation of the pipeline, and reducing the remarkable traction to the autogenous cutting sleeve pipe body as much as possible, so that the pressure outside each capsule cavity can be kept below the safety limit, namely less than or equal to 15cmH ₂ O；

5. Opening an airway inner wall massage mode: the device realizes periodical positive and negative pressure outside each capsule cavityThe fluctuation is 5-15cmH ₂ The safe interval of O is for order to fill each bag chamber and deflate, guarantees the leakproofness of gasbag body 1 to the air flue promptly, guarantees the normal blood system of air flue mucous membrane and the new metabolism of epithelial cell again.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "inner", "outer", "upper", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the term "connected" should be interpreted broadly, and for example, it may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Claims

1. The utility model provides a can monitor the aggregate unit of gasbag external pressure and feedback adjustment gasbag volume which characterized in that: the air bag type air duct comprises an air duct body, wherein the air duct body comprises a duct pipe body (2), an air bag body (1) is sleeved at the proximal end of the duct pipe body (2), three mutually independent air bag cavities which are respectively an air bag cavity A, an air bag cavity B and an air bag cavity C are arranged in the air bag body (1), the air bag cavity A is in contact with mucous membrane at the left upper side of an air duct, the air bag cavity B is in contact with mucous membrane at the right upper side of the air duct, the air bag cavity C is in contact with mucous membrane at the back side of the air duct, and air bag outer membrane type pressure sensors (7) for monitoring the pressure of the outer walls of the corresponding air bag cavities in real time are respectively attached to the outer walls of the air bag cavities;

the device also comprises an air bag volume adjusting device for adjusting the inner volume of each air bag cavity according to the outer wall pressure fed back by the air bag outer membrane pressure sensor (7).

2. The combination of monitoring the external pressure of an airbag and adjusting the volume of the airbag in feedback according to claim 1, wherein: the air bag volume adjusting device comprises a host machine (19), wherein a partitioned air bag external pressure data input end (16) and an air bag partitioned air charging and discharging output end (17) are arranged on the host machine (19), a controller (24) and miniature positive and negative pressure diaphragm pumps (25) which are respectively in one-to-one correspondence with all air bag cavities are arranged in the host machine (19), each air bag external film type pressure sensor (7) is electrically connected with the controller (24) through the partitioned air bag external pressure data input end (16), each miniature positive and negative pressure diaphragm pump (25) is respectively in one-to-one communication with all air bag cavities through the air bag partitioned air charging and discharging output end (17), and each miniature positive and negative pressure diaphragm pump (25) is electrically connected with the controller (24).

3. The combination of monitoring the external pressure of an airbag and adjusting the volume of the airbag in feedback according to claim 2, wherein: the inflation port and the deflation port of the miniature positive and negative pressure diaphragm pump (25) are connected through a Y-shaped pipe (32), a Y-shaped channel-dividing electromagnetic valve (26) is arranged at the intersection of the pipelines of the Y-shaped pipe (32), and an extension pipe of the Y-shaped pipe (32) is connected with an air bag partition inflation and deflation output end (17); the extension pipe of the Y-shaped pipe (32) is connected with an air bag partition pressure monitoring side pipe (27), the air bag partition pressure monitoring side pipe (27) is provided with a pressure transducer (28) for monitoring the pressure inside the air bag cavity, and the pressure transducer (28) is electrically connected with the controller (24).

4. A combination device for monitoring the external pressure of an air bag and adjusting the volume of the air bag in a feedback manner according to claim 3, wherein: the host machine (19) is also provided with a display screen (18) for displaying dynamic monitoring data and graphics of each air bag outer membrane type pressure sensor (7), an alarm indicator lamp (31) for alarming abnormal internal and external pressure of the air bag body (1) and a power switch (20) for switching on or off internal power supply of the host machine (19).

5. The combination of monitoring the external pressure of an airbag and adjusting the volume of the airbag in feedback according to claim 1, wherein: the outer wall of the air bag body (1) is provided with a water-wetting coating.

6. The combination of monitoring the external pressure of an airbag and adjusting the volume of the airbag in feedback according to claim 2, wherein: an adjustable fixed handle (3) capable of movably adjusting tightness is sleeved at the distal end of the catheter tube (2), and a standard interface (4) is arranged at the distal end of the catheter tube (2);

three air bag partition inflation and deflation interfaces (9) are arranged on the adjustable fixed handle (3), the three air bag partition inflation and deflation interfaces (9) are respectively connected with each air bag cavity in a one-to-one correspondence manner through three inflation pipes, and the three air bag partition inflation and deflation interfaces (9) are connected with air bag partition inflation and deflation output ends (17);

the adjustable fixed handle (3) is also provided with an air bag external pressure output interface (10), the air bag external pressure output interface (10) is electrically connected with each air bag external film type pressure sensor (7) through data wires, each data wire is arranged inside the catheter tube (2) and one end of each data wire stretches into the corresponding air bag cavity, and the air bag external pressure output interface (10) is electrically connected with the partitioned air bag external pressure data input end (16).

7. The combination of monitoring the external pressure of an airbag and adjusting the volume of the airbag in feedback according to claim 6, wherein: the catheter tube (2) comprises a tube working section (21), a tube fixing section (22) and a tube branching section (23) which are sequentially and integrally arranged, the standard interface (4) is arranged at the free end of the tube branching section (23), the adjustable fixing handle (3) is sleeved on the tube fixing section (22), and the air bag body (1) is sleeved on the tube working section (21) at a position close to the end part; the air bag partition inflation and deflation interface (9) and the air bag external pressure output interface (10) are both arranged on the pipe body branch section (23).

8. The combination of monitoring the external pressure of an airbag and adjusting the volume of the airbag in feedback according to claim 7, wherein: the novel air bag is characterized in that an upper bag suction hole (6) is formed in the upper position, close to the back side of the air bag body (1), of the pipe body working section (21), a transition pipe communicated with the upper bag suction hole (6) is arranged inside the pipe body working section (21), the free end of the transition pipe extends to a pipe body branch section (23) along the pipe body working section (21), and an upper bag suction pipe (8) communicated with the transition pipe is arranged on the side face of the pipe body branch section (23).

9. The combination of monitoring the external pressure of an airbag and adjusting the volume of the airbag in feedback according to claim 7, wherein: the adjustable fixing handle (3) is provided with a sleeving hole (12), one side of the sleeving hole (12) is provided with an elastic slit (13), the elastic slit (13) is used for adjusting the width through an elastic device (5), the elastic device (5) comprises a tightening rod (14) and a tightening nut (15), the tightening rod (14) transversely penetrates through the adjustable fixing handle (3) in a movable mode and penetrates through the elastic slit (13) to be arranged, and two ends of the tightening rod (14) extend out of the adjustable fixing handle (3) to be connected with the tightening nut (15) through threads.

10. The combination of monitoring the external pressure of an airbag and adjusting the volume of the airbag in feedback according to claim 9, wherein: the inner ring of the sleeve joint hole (12) is provided with a first concave-convex texture, and the outer surface of the pipe body fixing section (22) is provided with a second concave-convex texture meshed with the first concave-convex texture.