Pressure-adjustable continuous subglottic secretion drainage apparatus

Abstract

Disclosed in the present invention is a pressure-adjustable continuous subglottic secretion drainage apparatus, which relates to the technical field of subglottic secretion drainage. Said apparatus comprises a connecting tube, a first pressure monitoring component, a second pressure monitoring component, a negative pressure bottle, and a collection bottle, wherein one end of the connecting tube is in communication with a balloon catheter, one end of the balloon catheter extends into the patient's body, and a balloon on the balloon catheter is in communication with an external inflation assembly by means of the trachea and is supported on the inner wall of the patient's laryngeal cavity; the first pressure monitoring component monitors pressure information of the balloon; the negative pressure bottle is in communication with the other end of the connecting tube, a negative pressure adjusting assembly is arranged in the negative pressure bottle, and the negative pressure adjusting assembly adjusts negative pressure in the negative pressure bottle, such that secretions can be sucked into the negative pressure bottle by means of the connecting tube; the second pressure monitoring component monitors negative pressure information in the connecting tube; the collection bottle is detachably connected to and in communication with the negative pressure bottle, and the collection bottle is configured to collect the secretions in the negative pressure bottle. The pressure-adjustable continuous subglottic secretion drainage apparatus provided in the present invention facilitates adjustment of suction negative pressure and improves use flexibility.

Description

A continuous subglottic suction device with adjustable pressure Technical Field

[0001] This invention relates to the field of subglottic suction technology, and in particular to a continuous subglottic suction device with adjustable pressure. Background Technology

[0002] Subglottic secretion drainage (SSD) is a nursing technique that involves continuous or intermittent suctioning of secretions trapped under the glottis and on the endotracheal cuff. Continuous subglottic suction uses a negative pressure suction device to continuously drain secretions above the endotracheal tube cuff. Once oral or nasal secretions slide down into the subglottis, continuous subglottic suction can immediately remove them, preventing retention of subglottic secretions on the cuff and thus reducing the incidence of pulmonary infections.

[0003] Currently, continuous subglottic suction is mainly achieved by connecting a negative pressure suction device to a central suction device on the wall. Patients need to remain in bed. Once they get out of bed, they can only use intermittent subglottic suction. The negative pressure of intermittent subglottic suction is 100mmHg to 150mmHg. The high pressure can easily cause patients to cough, decrease blood oxygen saturation, or even myocardial hypoxia. The current subglottic suction device has few application scenarios and is inconvenient to use. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable pressure continuous subglottic suction device to solve the problems existing in the prior art, facilitate the adjustment of suction negative pressure, and improve the flexibility of use.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides an adjustable pressure continuous subglottic suction device, comprising a connecting tube, a first pressure monitoring component, a second pressure monitoring component, a negative pressure bottle, and a collection bottle; one end of the connecting tube is connected to a cuff catheter, the other end of which is inserted into the patient's body, and the cuff on the cuff catheter is used to connect to an external inflation component through the trachea and can be supported against the inner wall of the patient's laryngeal cavity; the first pressure monitoring component is disposed on the trachea and is used to monitor the pressure information of the cuff; the negative pressure bottle is connected to the other end of the connecting tube, and a negative pressure regulating component is disposed inside the negative pressure bottle, which is used to regulate the negative pressure inside the negative pressure bottle so that secretions can be suctioned into the negative pressure bottle through the connecting tube; the second pressure monitoring component is disposed on the connecting tube and is used to monitor the negative pressure information inside the connecting tube; the collection bottle is detachably connected to the negative pressure bottle and can communicate with the negative pressure bottle, and the collection bottle is used to collect the secretions inside the negative pressure bottle.

[0007] The present invention achieves the following technical effects compared to the prior art:

[0008] The adjustable pressure continuous subglottic suction device provided by this invention involves connecting one end of a connecting tube to a suction tube on a cuff catheter via a connector. The cuff catheter is inserted into the patient's larynx. Once it reaches the designated position, an external inflation component inflates the cuff through the trachea, and the pressure is monitored by a first pressure monitoring component on the trachea. This allows the cuff to be supported against the inner wall of the larynx, causing the patient's laryngeal secretions to accumulate on the outer side of the cuff near the patient's body. An opening is made in the outer wall of the cuff catheter, connecting to the outer side of the cuff, and the suction tube on it connects to the opening, allowing secretions to be suctioned by the connecting tube. The negative pressure is adjusted as needed by a negative pressure regulating component inside the negative pressure bottle. The negative pressure bottle is connected to the connecting tube, and the pressure information is monitored by a second pressure monitoring component on the connecting tube to adjust the negative pressure in a timely manner, improving the flexibility of use. After the secretions are suctioned into the negative pressure bottle, they enter a collection bottle. The collection bottle is then detached from the negative pressure bottle to collect the secretions for subsequent analysis. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 is a schematic diagram of the structure of the adjustable pressure continuous subglottic suction device provided in Embodiment 1;

[0011] Figure 2 is a cross-sectional schematic diagram of the negative pressure bottle provided in Example 1;

[0012] Figure 3 is a partial cross-sectional view of Embodiment 1.

[0013] In the diagram: 1-Connecting pipe; 11-First one-way valve; 12-Insufficient airway tube; 13-Air tube; 14-First pressure monitoring component; 15-Opening; 2-Second pressure monitoring component; 3-Negative pressure bottle; 4-Collection bottle; 41-Viewing window; 5-Negative pressure regulating component; 51-Connecting pipe; 52-Second one-way valve; 53-Elastic component; 54-Limiting ring; 55-Telescopic rod; 56-External power supply; 57-Extension pipe; 7-Displacement sensor. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] The purpose of this invention is to provide an adjustable pressure continuous subglottic suction device to solve the problems existing in the prior art, facilitate the adjustment of suction negative pressure, and improve the flexibility of use.

[0016] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Example 1

[0018] This embodiment provides an adjustable pressure continuous subglottic suction device, as shown in Figures 1-3. It includes a connecting tube 1, a first pressure monitoring component 14, a second pressure monitoring component 2, a negative pressure bottle 3, and a collection bottle 4. One end of the connecting tube 1 is connected to the suction tube of a cuff catheter 12 via a connector. The end of the cuff catheter 12 with the cuff is inserted into the patient's body and supported against the inner wall of the laryngeal cavity. The cuff on the cuff catheter 12 is connected to an external inflation component via a trachea 13. The first pressure monitoring component 14 is disposed on the trachea 13 and is used to monitor the pressure information of the cuff. The second pressure monitoring component 2 is disposed on the connecting tube 1 and is used to monitor the negative pressure information within the connecting tube 1. The negative pressure bottle 3 is connected to the other end of the connecting tube 1. A negative pressure adjustment component 5 is disposed within the negative pressure bottle 3 to adjust the negative pressure within the negative pressure bottle 3, enabling the suction of secretions into the negative pressure bottle 3 via the connecting tube 1. The collection bottle 4 is detachably connected to and communicates with the negative pressure bottle 3, and is used to collect secretions within the negative pressure bottle 3.

[0019] In use, one end of the connecting tube 1 is connected to the suction tube of the cuff catheter 12. The cuff catheter 12 is inserted into the patient's larynx. After reaching the designated position, the external inflation component inflates the cuff through the trachea 13, and the pressure is monitored by the first pressure monitoring component 14 on the trachea 13 to determine whether the cuff pressure meets the usage requirements, so that the cuff is supported on the inner wall of the larynx, causing the patient's laryngeal secretions to accumulate on the outer side of the cuff near the patient's body. The outer wall of the cuff catheter 12 has an opening 15 that connects to the outer side of the cuff, and one end of the suction tube is directly connected to the opening 15, so that... Secretions can be drawn into the connecting tube 1 through the suction tube. The negative pressure in the negative pressure bottle 3 can be adjusted as needed by the negative pressure regulating component 5 inside the negative pressure bottle 3. The negative pressure bottle 3 is connected to the connecting tube 1. The pressure information is monitored by the pressure monitoring component 2 on the connecting tube 1 so that the negative pressure can be adjusted in time to improve the flexibility of use. After the secretions are drawn into the negative pressure bottle 3, they enter the collection bottle 4. The collection bottle 4 can be removed from the negative pressure bottle 3 so that the secretions in the collection bottle 4 can be collected for subsequent analysis. The external inflation component can be set as an electric inflation device such as an air pump.

[0020] Furthermore, a first one-way valve 11 is provided inside the connecting tube 1. The first one-way valve 11 is used to allow fluid to enter the negative pressure bottle 3 from the outside, and the first one-way valve 11 is provided to prevent gas from entering the patient's body from the connecting tube 1.

[0021] Furthermore, the negative pressure regulating component 5 includes two coaxially movably arranged connecting pipes 51 inside the negative pressure bottle 3. The connecting pipes 51 are hollow and are movably and sealed to the inner wall of the negative pressure bottle 3. Each connecting pipe 51 is provided with a second one-way valve 52, which is used to allow gas to flow from the negative pressure bottle 3 to the outside. The connecting pipe 1 is connected to the opposite cavity of the two connecting pipes 51 inside the negative pressure bottle 3. The two connecting pipes 51 can move relative to each other or towards each other to regulate the negative pressure inside the negative pressure bottle 3. When the two connecting pipes 51 move towards each other, the compressed gas escapes from the second one-way valve 52 in the middle of the connecting pipes 51, creating a negative pressure environment inside the negative pressure bottle 3. The magnitude of the negative pressure can be adjusted by adjusting the moving distance of the connecting pipes 51.

[0022] Furthermore, elastic components 53 are connected to the opposite ends of the two connecting tubes 51; the two connecting tubes 51 move towards each other and can cause the elastic components 53 to undergo elastic deformation, and the two connecting tubes 51 can move away from each other under the restoring force of the elastic components 53; by setting the elastic components 53, it is convenient to realize the automatic absorption of secretions, and support the moving of the connecting tubes 51 away from each other to absorb secretions; wherein the elastic components 53 can be set as springs.

[0023] Furthermore, a limit switch 54 can be set in the middle of the negative pressure cylinder, and the connecting pipe 51 reaches the limit position when it abuts against the limit switch 54.

[0024] Furthermore, the negative pressure regulating component 5 also includes an external power supply 56 and two telescopic rods 55. The two telescopic rods 55 are respectively connected to two connecting pipes 51. The two telescopic rods 55 are used to drive the two connecting pipes 51 to slide relative to the negative pressure cylinder. The external power supply 56 is electrically connected to the two telescopic rods 55 and provides the required electrical energy. Electric regulation is achieved through the telescopic rods 55, and the external power supply 56 provides the required electrical energy for the telescopic rods 55.

[0025] Furthermore, the connecting pipe 51 can also be connected to an extension pipe 57. One end of the extension pipe 57 is threaded to the connecting pipe 51, and the other end extends out of the negative pressure cylinder. When the telescopic rod 55 cannot be electrically adjusted, it can be manually adjusted through the external extension pipe 57.

[0026] Furthermore, a displacement sensor 7 is installed inside the negative pressure bottle 3. The displacement sensor 7 is used to monitor the displacement of the connecting pipe 51. By monitoring the movement distance of one end of the connecting pipe 51 through the displacement sensor 7, the displacement situation can be determined.

[0027] Furthermore, a viewing window 41 is provided on the collection bottle 4, through which the collection status of secretions in the collection bottle 4 can be judged, so as to facilitate timely replacement or transfer.

[0028] Furthermore, the collection bottle 4 is positioned below the negative pressure bottle 3, and the upper side of the collection bottle 4 has an opening that is inserted into the outlet on the lower side of the negative pressure bottle 3.

[0029] Furthermore, the first pressure monitoring component 14 and the second pressure monitoring component 2 are configured as pressure sensors, and the pressure sensors indicate whether the pressure meets the requirements.

[0030] Furthermore, it also includes a control component, which is communicatively connected to the first pressure monitoring component 14 and the second pressure monitoring component 2 and is able to receive pressure information; the control component is also communicatively connected to the negative pressure regulating component 5, and can control the telescopic rod 55 of the negative pressure regulating component 5 to adjust the negative pressure through the pressure information of the second pressure monitoring component 2; the control component can be set as a control chip and integrated on the negative pressure bottle 3 for easy portability.

[0031] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A continuous subglottic suction device with adjustable pressure, characterized in that: include: A connecting tube, one end of which is connected to the suction tube of the cuff catheter, one end of which is used to extend into the patient's body, and the cuff on the cuff catheter is used to connect to an external inflation component through the trachea and can be supported against the inner wall of the patient's laryngeal cavity. A first pressure monitoring component is disposed on the trachea and is used to monitor the pressure information of the airbag; A negative pressure bottle is connected to the other end of the connecting tube. A negative pressure regulating component is provided inside the negative pressure bottle. The negative pressure regulating component is used to regulate the negative pressure inside the negative pressure bottle so that secretions can be drawn into the negative pressure bottle through the connecting tube. A second pressure monitoring component is installed on the connecting pipe and is used to monitor the negative pressure information inside the connecting pipe; and A collection bottle is detachably connected to and communicates with the negative pressure bottle, and is used to collect secretions from the negative pressure bottle.

2. The adjustable pressure continuous subglottic suction device according to claim 1, characterized in that: The connecting pipe is equipped with a first one-way valve, which is used to allow fluid to enter the negative pressure bottle from the outside.

3. The adjustable pressure continuous subglottic suction device according to claim 1, characterized in that: The negative pressure regulating assembly includes two coaxially movably arranged connecting tubes inside the negative pressure bottle. The connecting tubes are hollow and are movably and sealed to the inner wall of the negative pressure bottle. Each connecting tube is provided with a second one-way valve, which is used to allow gas to flow from the negative pressure bottle to the outside. The connecting tube is connected to the opposite cavities of the two connecting tubes inside the negative pressure bottle. The two connecting tubes can move relative to each other or towards each other to regulate the negative pressure inside the negative pressure bottle.

4. The adjustable pressure continuous subglottic suction device according to claim 3, characterized in that: The two ends of the two connecting pipes are connected by an elastic component; the two connecting pipes move towards each other and can cause the elastic component to undergo elastic deformation, and the two connecting pipes can move away from each other under the restoring force of the elastic component.

5. The adjustable pressure continuous subglottic suction device according to claim 3, characterized in that: The negative pressure regulating assembly also includes an external power supply and two telescopic rods. The two telescopic rods are respectively connected to the two connecting pipes and are used to drive the two connecting pipes to slide relative to the negative pressure cylinder. The external power supply is electrically connected to the two telescopic rods and provides the required electrical energy.

6. The adjustable pressure continuous subglottic suction device according to claim 3, characterized in that: A displacement sensor is installed inside the negative pressure bottle, and the displacement sensor is used to monitor the displacement of the connecting pipe.

7. The adjustable pressure continuous subglottic suction device according to claim 1, characterized in that: The collection bottle is provided with a viewing window.

8. The adjustable pressure continuous subglottic suction device according to claim 1, characterized in that: It also includes a control component, which is communicatively connected to the first pressure monitoring component and the second pressure monitoring component and is capable of receiving pressure information; the control component is also communicatively connected to the negative pressure regulating component and is capable of controlling its operation.

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