Trachea cannula pressure relief device and treatment device

Abstract

The utility model provides a trachea cannula pressure relief device which comprises a first cavity, a second cavity and a pressure relief device. The first cavity comprises a first connecting port, and the first connecting port is used for being connected with a trachea cannula so as to introduce fluid in the trachea cannula into the pressure relief device; the first cavity further comprises a second connecting port, the second connecting port is used for being connected with external equipment, the trachea cannula pressure relief device further comprises a pressure relief component, and the pressure relief component conducts pressure relief when the pressure in the trachea cannula exceeds a preset threshold value. By arranging the pressure relief component, pressure is relieved when the pressure in the trachea cannula exceeds the preset threshold value, the situation that due to the fact that manual operation forgets to disconnect the connection between the trachea cannula and the tee joint, the pressure in the lung rises instantly, and then air pressure injuries or even endangers the life of a patient are generated is prevented, and the safety of an operation is improved.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to a tracheal intubation pressure relief device and a treatment device. Background Art

[0002] COPD is a common chronic airway disease that poses a serious threat to human health. Its pathological manifestations include inflammatory cell infiltration, epithelial damage, goblet cell proliferation, increased mucus secretion, small airway obstruction and stenosis, and can be accompanied by mucus hypersecretion, airway epithelial ciliary dysfunction, and systemic adverse effects. Currently, bronchodilators are the first-line treatment for COPD, but drug therapy still fails to meet clinical needs. Spray cryoablation, a novel treatment for COPD, has demonstrated promising results in clinical trials both domestically and internationally due to its high efficacy, safety, and lack of complications. During treatment, a refrigerant is delivered into a catheter, which is inserted into the lung bronchi via a bronchoscope. The refrigerant is then sprayed onto the lesion through the catheter nozzle. After spraying, the refrigerant undergoes phase change and volume expansion, and is discharged through the gap between the bronchoscope and the endotracheal tube. The three-way connector connected to the endotracheal tube should be pulled out so that the refrigerant can be discharged smoothly from the gap. After treatment, the three-way connector needs to be reset and the ventilator connected normally to ensure the patient's blood oxygen status. That is, the three-way connector needs to be pulled out and inserted every time treatment is performed.

[0003] If the three-way joint is not opened during treatment, the intrapulmonary pressure will increase instantly, and pneumothorax, mediastinal emphysema, and subcutaneous emphysema may occur, which may lead to severe respiratory or circulatory failure and even endanger the patient's life; if the three-way joint is not closed after treatment, the pipe connecting the three-way joint to the external respiratory equipment will not be sealed, and it will not be able to effectively supply oxygen to the human body, causing the patient's blood oxygen to be lower than normal. The existing solution is that before each treatment begins, relevant personnel remind medical staff to unplug the three-way joint on the endotracheal tube, confirm that the three-way joint is in the open state before lesion positioning, and then start treatment. After the treatment, the medical staff will connect the three-way joint. This method has the following defects: 1. Relying on manual operation may cause the situation of forgetting to unplug the three-way joint; 2. Each action of unplugging and inserting the three-way joint will affect the positioning of the lesion, which is not conducive to repeated treatment of the same lesion and positioning of the next treatment point, which will increase the operation time.

[0004] Based on this, a treatment device is needed that can provide a fixed pathway to discharge the refrigerant in the lungs during treatment, eliminating the need to plug and unplug the three-way valve, and can also ensure that the external respiratory equipment effectively supplies oxygen to the human body and maintains the patient's blood oxygen status after treatment. Utility Model Content

[0005] The present application provides a tracheal tube pressure relief device, which relieves pressure through a pressure relief component when the pressure in the tracheal tube exceeds a preset threshold, thereby preventing the instantaneous increase in lung pressure caused by manual operation due to forgetting to disconnect the connection between the tracheal tube and the tee, thereby causing barotrauma and even endangering the patient's life.

[0006] The present application provides a tracheal intubation pressure relief device, comprising:

[0007] The first cavity is used for inserting or withdrawing the tracheoscope;

[0008] The first cavity includes a first connecting port, and the first connecting port is used to connect with the endotracheal tube to introduce the fluid in the endotracheal tube into the endotracheal tube pressure relief device;

[0009] The first cavity further includes a second connection port, and the second connection port is used to connect an external device;

[0010] The device further comprises a pressure relief component, which relieves pressure when the pressure in the endotracheal tube exceeds a preset threshold.

[0011] Optionally, the endotracheal tube pressure relief device further includes an on-off device, which is connected to the first cavity and is opened to discharge the fluid introduced into the endotracheal tube.

[0012] Optionally, the on-off device is a solenoid valve, which is electrically connected to the treatment device. When the treatment device starts treatment, the solenoid valve is controlled to open; when the treatment device stops treatment, the solenoid valve is controlled to close after a preset delay time.

[0013] Optionally, a pressure sensor is further included, wherein the pressure sensor is connected to the first cavity to detect the pressure in the first cavity.

[0014] When the pressure sensor detects that the air pressure in the first cavity is higher than a first threshold, the solenoid valve is controlled to open;

[0015] When the pressure sensor detects that the air pressure in the first cavity is lower than a second threshold, the solenoid valve is controlled to close.

[0016] Optionally, the on-off device is a through hole and a sealing member that seals the through hole; when the sealing member blocks the through hole, the on-off device is closed, and when the sealing member is removed, the fluid introduced into the endotracheal tube is discharged.

[0017] The present application provides a therapeutic device, comprising:

[0018] Tracheal intubation, tracheal endoscope, ventilator connector and the tracheal intubation pressure relief device;

[0019] The endotracheal tube is connected to the first connecting port of the endotracheal tube pressure relief device;

[0020] The tracheal endoscope can be placed into or removed from the tracheal tube;

[0021] The ventilator connector is connected to the second connection port of the endotracheal tube pressure relief device, and the ventilator connector is detachably arranged between the ventilator and the second connection port.

[0022] Optionally, it further comprises a treatment catheter, which can be placed in or removed from the tracheal endoscope;

[0023] A temperature sensor is provided at the distal end of the treatment catheter, and the signal from the temperature sensor can assist in determining the status of the endotracheal tube.

[0024] Optionally, the endotracheal tube pressure relief device is integrally or separately arranged with the endotracheal tube.

[0025] Compared with the prior art, the present invention has at least the following beneficial effects:

[0026] 1. The endotracheal tube pressure relief device of the present application is provided with a pressure relief component, which relieves pressure when the pressure in the endotracheal tube exceeds a preset threshold value, thereby preventing the patient from forgetting to disconnect the connection between the endotracheal tube and the tee 50 due to manual operation, resulting in an instantaneous increase in intrapulmonary pressure, thereby causing barotrauma and even endangering the patient's life; the preset threshold value can be set to a safe intrapulmonary pressure, so that the setting can ensure the safety of the device.

[0027] 2. The endotracheal intubation pressure relief device of the present application is provided with an on-off device. The provision of the on-off device provides the treatment device with a permanent passage, eliminating the need to unplug or connect the tee 50, thereby reducing the movement of the treatment device during use and improving the stability of the operation.

[0028] 3. The on-off device in the endotracheal intubation pressure relief device of the present application can be connected to the equipment, and the on-off of the device is triggered by the start-up or shutdown of the equipment, so that the control of the pressure relief device during the treatment process is more precise.

[0029] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0031] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the technical solution of the prior art.

[0032] Figure 2 Shown is a schematic diagram of the three-dimensional structure of a tracheal tube pressure relief device according to one embodiment of the present application.

[0033] Figure 3 Shown is a schematic diagram of the three-dimensional structure of a tracheal tube pressure relief device according to another embodiment of the present application.

[0034] Figure 4 Shown is a schematic diagram of the three-dimensional structure of a tracheal tube pressure relief device according to another embodiment of the present application.

[0035] Figure numerals: first cavity 10, first connecting port 11, second connecting port 12, tracheal endoscope 20, endotracheal tube 30, external device 40, pressure relief component 13, on-off device 14, pressure sensor 15, solenoid valve 141, through hole 142, seal 143, ventilator connector 41, tee 50. DETAILED DESCRIPTION

[0036] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0037] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should have the usual meaning understood by people with ordinary skills in the field to which this application belongs. The words "include" or "comprise" and the like used in this application specification and claims mean that the elements or objects appearing before "include" or "comprise" cover the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect.

[0038] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms "a," "an," and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0039] In this application, the distal end refers to the end of the medical device that is away from the operator during normal use, and the proximal end is usually the end that the operator uses to hold during operation, that is, the end close to the operator. The proximal end and the distal end are relative terms used to describe relative positions and do not refer to a specific part.

[0040] Take the existing technology for treating COPD as an example, Figure 1 As shown, the existing equipment includes a tracheal endoscope 20 and an endotracheal tube 30 that is sleeved outside the tracheal endoscope 20. The tracheal endoscope 20 is sleeved outside the catheter used for ablation. To facilitate subsequent tracheal access to an external respiratory device, a tee 50 is also provided. The first end of the tee 50 is connected to the tracheal tube 30, and the second end is connected to the respiratory device. Due to the sealing requirements of the respiratory device, the third end of the tee 50 is sealed and sleeved outside the tracheal tube 30. The tee 50 cannot achieve an exhaust function when connected to the tracheal tube 30. Therefore, during treatment, the freezing device delivers the refrigerant into the catheter, which is extended into the lung bronchi through the tracheal endoscope 20. The refrigerant is then sprayed through the catheter nozzle to act on the lesion. After spraying, the refrigerant undergoes a phase change and expands in volume and is discharged through the gap between the bronchoscope and the tracheal tube 30. Taking liquid nitrogen as an example, at room temperature and pressure, the phase change expansion of liquid nitrogen is about 700 times its original volume. The three-way 50 interface connected to the endotracheal tube 30 should be pulled out so that the refrigerant can be discharged smoothly from the gap. After treatment, the three-way 50 connector needs to be reset and connected to the ventilator normally to ensure the patient's blood oxygen status. That is, each treatment requires the three-way 50 connector to be pulled out and connected, which not only increases the operation time but also reduces the safety and accuracy of the surgical operation.

[0041] To solve the above problems, this embodiment provides a treatment device, such as Figure 2 As shown, the treatment device includes an endotracheal tube 30, an endotracheal endoscope 20, a ventilator connector, and an endotracheal tube pressure relief device. The endotracheal endoscope 20 can be inserted into and removed from the endotracheal tube 30 to observe the trachea. The endotracheal endoscope 20 provides high-definition imaging and a wide field of view, clearly displaying the structures within the patient's trachea. Once inserted into the endotracheal tube 30, it can be used as a guide to accurately position the tube in the desired location.

[0042] The tracheal tube 30 is connected to the first connecting port 11 of the pressure relief device; the tracheal tube 30 discharges the fluid in the human trachea after heat exchange through the gap between the tracheal tube 30 and the tracheal endoscope 20. After the tracheal tube 30 is connected to the first connecting port 11 of the pressure relief device, the fluid in the gap can be introduced into the pressure relief device.

[0043] The ventilator connector is connected to the second connection port 12 of the pressure relief device and is detachably disposed between the ventilator and the second connection port 12. The port connecting the ventilator connector and the second connection port 12 is the first end. The second end of the ventilator connector can be connected to a respiratory device to maintain the patient's blood oxygen status. The ventilator connector can be a T-joint 50 that is mounted outside the bronchoscope and connected to the pressure relief device. The third end of the ventilator should remain sealed to ensure airtightness during operation of the respiratory device. The ventilator connector is connected proximal to the pressure relief device so that fluid pressure can flow through the ventilator connector after the pressure relief device is fully released, preventing it from affecting the normal operation of the respiratory device.

[0044] In some embodiments, the therapeutic device further comprises a temperature sensor,

[0045] A temperature sensor is connected to the distal end of the treatment catheter. When treatment is activated, the temperature sensor is installed at the distal end of the treatment catheter. The temperature sensor's signal can help determine the status of the endotracheal tube 30. The specific determination process is as follows: After the device initiates treatment, the temperature at the distal end of the treatment catheter drops from body temperature to approximately -190°C within 10 seconds, then remains at -190°C for several seconds. When the device is activated and the temperature sensor signal approaches -190°C, the endotracheal tube 30 should be vented. If the passage is not blocked, the feedback pressure from the pressure sensor 15 located in the first cavity 10 will not drop to equal atmospheric pressure while the device is activated, and will only reach atmospheric pressure after treatment ends. If the feedback pressure from the pressure sensor 15 continues to drop during the device activation phase and the temperature sensor signal approaches -190°C, the endotracheal tube 30 is obstructed. If the feedback pressure continues to equal atmospheric pressure during the device activation phase and the temperature sensor signal approaches -190°C, the endotracheal tube 30 is completely obstructed. When the feedback pressure becomes abnormal during the treatment period, the device can automatically shut off the fluid source of the treatment catheter to prevent further increase in intrapulmonary pressure.

[0046] This embodiment provides a tracheal intubation pressure relief device, comprising:

[0047] The first cavity 10 is used for inserting or withdrawing the tracheoscope 20;

[0048] The cavity includes a first connection port 11, which is used to connect to the endotracheal tube 30 to introduce the fluid in the endotracheal tube 30 into the pressure relief device. The cavity also includes a second connection port 12, which is used to connect to the external device 40;

[0049] The device further comprises a pressure relief component 13, which relieves pressure when the pressure in the endotracheal tube 30 exceeds a preset threshold value. The preset threshold value can be set as a safe value of the intrapulmonary pressure.

[0050] The pressure relief component 13 can be a mechanical pressure relief valve composed of a spring and a diaphragm, a burst disc, or a pressure switch equipped with a pressure sensing element. When the pressure in the device exceeds a preset threshold, the pressure relief valve will automatically open to release the pressure, thereby preventing the pressure in the lungs from rising instantaneously due to the human operator forgetting to disconnect the connection between the tracheal cannula 30 and the tee 50, and further preventing the occurrence of barotrauma or even endangering the patient's life.

[0051] In some embodiments, a switching device 14 is further included, which is connected to the first cavity 10. The switching device 14 is opened to discharge the fluid introduced from the tracheal cannula 30. The switching device 14 serves as a normal exhaust channel of the pressure relief device, and is opened to discharge air when treatment is needed, and is closed when the treatment is turned off or the breathing device is enabled. In this way, the tee 50 does not need to be pulled out or connected due to the need for air discharge or the external device 40, and the stability during the operation is maintained. The pressure relief component 13 can serve as a "second line of defense" to maintain a safe pressure, and provides a guarantee for maintaining a safe pressure in the case of accidental failure of the switching device 14 to open.

[0052] In some embodiments, as shown in Figure 3 The switching device 14 can be a solenoid valve 141, which is electrically connected to the treatment device. When the treatment device starts the treatment, the solenoid valve 141 is opened. When the treatment device turns off the treatment, the solenoid valve 141 is closed after a preset delay time. When the device starts the treatment, a signal is sent to the solenoid valve 141 to open the switching device 14 to discharge air. When the device turns off the treatment, a signal is sent to the solenoid valve 141 to close after a preset delay time. The preset delay time can be set according to the specific situation, and the preset delay time can ensure that the fluid in the tracheal cannula 30 is discharged as much as possible. Preferably, the preset delay time is 2 seconds. In some embodiments, the solenoid valve 141 is closed when the breathing device is enabled to ensure the air tightness of the external breathing device.

[0053] In some embodiments, as shown in Figure 4 A pressure sensor 15 is further included, which is connected to the first cavity 10 to detect the pressure in the first cavity 10. When the pressure sensor 15 receives a signal that the pressure in the first cavity 10 is higher than the safe threshold, the solenoid valve 141 is controlled to open to discharge air. The signal can be set as the safe threshold of the pressure in the trachea. When the pressure sensor 15 receives a signal that the pressure in the first cavity 10 is the same as the atmospheric pressure, the solenoid valve 141 is controlled to close. At this time, the air in the first cavity 10 has been discharged, and the solenoid valve 141 is closed to ensure the air tightness of the subsequent connection of the breathing device.

[0054] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0055] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A tracheal intubation pressure relief device, comprising: The first cavity is used to insert or withdraw the tracheal endoscope; the first cavity includes a first connecting port, which is used to connect to the tracheal tube to introduce the fluid in the tracheal tube into the tracheal tube pressure relief device; the first cavity also includes a second connecting port, which is used to connect to an external device; it is characterized in that it also includes a pressure relief component, which relieves pressure when the pressure in the tracheal tube exceeds a preset threshold.

2. The endotracheal tube pressure relief device according to claim 1, characterized in that: It also includes an on-off device, which is connected to the first cavity and is opened to discharge the fluid introduced from the endotracheal tube.

3. The endotracheal tube pressure relief device according to claim 2, characterized in that: The on-off device is a solenoid valve, which is electrically connected to the treatment device. When the treatment device starts treatment, the solenoid valve is controlled to open; when the treatment device stops treatment, the solenoid valve is controlled to close after a preset delay time.

4. The endotracheal tube pressure relief device according to claim 3, characterized in that: It also includes a pressure sensor, which is connected to the first cavity to detect the pressure in the first cavity. When the pressure sensor receives that the air pressure in the first cavity is higher than a first threshold, the solenoid valve is controlled to open; when the pressure sensor receives that the air pressure in the first cavity is lower than a second threshold, the solenoid valve is controlled to close.

5. The endotracheal tube pressure relief device according to claim 2, characterized in that: The on-off device comprises a through hole and a sealing member for sealing the through hole; when the sealing member blocks the through hole, the on-off device is closed, and when the sealing member is removed, the fluid introduced into the endotracheal tube is discharged.

6. A therapeutic device, characterized in that include: A tracheal cannula, a tracheal endoscope, a ventilator connector, and a tracheal cannula pressure relief device as described in any one of claims 1 to 5; the tracheal cannula is connected to the first connector of the tracheal cannula pressure relief device; the tracheal endoscope can be inserted into or removed from the tracheal cannula; the ventilator connector is connected to the second connector of the tracheal cannula pressure relief device, and the ventilator connector is detachably arranged between the ventilator and the second connector.

7. The therapeutic device according to claim 6, characterized in that It also includes a treatment catheter, which can be placed in or withdrawn from the tracheal endoscope; a temperature sensor is provided at the distal end of the treatment catheter, and the signal of the temperature sensor can assist in judging the status of the tracheal intubation.

8. The therapeutic device according to claim 6, wherein The endotracheal tube pressure relief device is integrally or separately arranged with the endotracheal tube.

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