Simple adjustable negative pressure aspirator

Abstract

The utility model relates to the technical field of medical equipment, and discloses a simple adjustable negative pressure aspirator which comprises a liquid collector, an adjusting mechanism is arranged outside the liquid collector, an aspiration mechanism is arranged outside the liquid collector, the adjusting mechanism comprises a first sleeve and a second sleeve, a tooth block is fixedly connected to the inner side of the first sleeve, and the tooth block is fixedly connected to the outer side of the second sleeve. According to the simple and adjustable negative pressure aspirator, the sealing silica gel can be pulled through the springs, so that the liquid collector is kept in a sealed state under a certain air pressure difference, if the negative pressure is too large, the liquid collector is not in a sealed state, and if the negative pressure is too large, the liquid collector is not in a sealed state. The sealing silica gel is separated from the second sleeve, air enters the liquid collector, the pressure in the liquid collector rises and is closed until the pressure approaches to the adjusted pressure, and the negative pressure in the liquid collector depends on the stretching degree of the spring under the condition that the air suction flow is determined, so that the operation of adjusting and limiting the negative pressure is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a simple and adjustable negative pressure aspirator. Background Art

[0002] Ventilator-associated pneumonia (VAP) is the most common nosocomial infection in critically ill patients, with an estimated incidence of 1% to 3% per day of mechanical ventilation. The reported global prevalence of VAP in patients on ventilator support is 15.6% (Kollef et al., 2014). Patients with VAP have significantly higher in-hospital mortality than those without VAP. VAP is also associated with higher medical costs. Bacterial infections of the lower respiratory tract usually occur when the upper respiratory tract is colonized by pathogens, followed by aspiration of oropharyngeal secretions. Methods to prevent VAP can reduce the incidence of VAP. The "Ventilator Bundle" is a set of interventions for intubated patients that can effectively reduce the VAP rate, among which the core technologies are body positioning, oral decontamination, and subglottic suction. Despite various measures, the incidence of VAP or aspiration pneumonia remains high, resulting in a heavy medical burden. A negative pressure aspirator is a tool that creates a negative pressure state in its suction head by a certain method, and the material outside the suction head is squeezed toward the suction head, thereby completing the "suction" effect.

[0003] At present, many drainages in ICU need to limit the size of negative pressure, such as continuous subglottic suction and gastrointestinal drainage. The current negative pressure drainage can maintain a fixed negative pressure at a constant flow rate, but when the catheter is blocked and the airflow is not smooth, the negative pressure will increase rapidly, leading to mucosal bleeding, catheter adhesion and even mucosal suction into the drainage port to aggravate the blockage. Therefore, it is necessary to design a device that can limit negative pressure, combined with the corresponding drainage can, to protect the patient's safety and ensure the drainage effect. Utility Model Content

[0004] The purpose of the utility model is to provide a simple and adjustable negative pressure aspirator to solve the problem that many drainages in the current ICU need to limit the size of the negative pressure, such as continuous subglottic suction, gastrointestinal drainage, etc. The current negative pressure drainage can maintain a fixed negative pressure at a constant flow rate, but when the catheter is blocked and the airflow is not smooth, the negative pressure will increase rapidly, resulting in mucosal bleeding, catheter wall adhesion and even mucosal suction into the drainage port to aggravate the blockage. Therefore, it is necessary to design a device that can limit the negative pressure, combined with a corresponding drainage can, to protect the safety of the patient and ensure the drainage effect.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a simple adjustable negative pressure aspirator, comprising a liquid collector, an adjusting mechanism is arranged outside the liquid collector, and a suction mechanism is arranged outside the liquid collector;

[0006] The adjustment mechanism includes a first sleeve and a second sleeve, the inner side of the first sleeve is fixedly connected to a tooth block, the outer side of the tooth block is meshed with a positioning block, the inner sides of the first sleeve and the second sleeve are installed with springs, and the bottom of the spring is fixedly connected to sealing silicone.

[0007] Preferably, a metal sheet is fixedly connected to the top of the spring, the metal sheet is configured to be hollow, and the metal sheet is fixedly connected to the top of the first sleeve.

[0008] Preferably, two positioning blocks are provided, and the two positioning blocks are fixedly connected to the left and right sides of the second sleeve respectively.

[0009] Preferably, the sealing silica gel is arranged inside the liquid collector, and the middle parts of the first sleeve and the second sleeve are both arranged to be hollow.

[0010] Preferably, the suction mechanism comprises an upper cover, the top of which is fixedly connected with an air inlet pipe and a negative pressure suction pipe, and one end of the upper cover is provided with a scale.

[0011] Preferably, the upper cover is connected to the external thread of the liquid collector, and the second sleeve is installed on the top of the upper cover.

[0012] Preferably, the outside of the air inlet pipe and the negative pressure suction tube are both provided with threads, and the scale is provided on the outer wall of the liquid collector.

[0013] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0014] First, the utility model adjusts the length of the spring through the first sleeve and the second sleeve. The spring can pull the sealing silicone, so that the sealing silicone seals the connection between the upper cover and the second sleeve, so that the liquid collector remains in a sealed state under a certain air pressure difference. If the negative pressure is too large, the sealing silicone and the second sleeve are separated, and air enters the liquid collector. The internal pressure of the liquid collector rises until it approaches the regulated pressure and then closes. When the inhalation flow rate is determined, the negative pressure in the liquid collector depends on the stretching degree of the spring, thereby completing the operation of adjusting and limiting the negative pressure, thereby achieving the effect of protecting the patient's safety.

[0015] Second, the utility model is threadedly connected to the liquid collector through the upper cover, so that the liquid collector is sealed. Threads are provided on the outside of the air inlet pipe and the negative pressure suction tube, which is convenient for connecting the air inlet pipe with an external hose, and the negative pressure suction tube is connected to the negative pressure terminal, so that negative pressure can be generated in the liquid collector through the negative pressure suction tube, and then the hose connected to the air inlet pipe guides dirt such as dirty blood, sputum, etc. into the liquid collector. The situation in the liquid collector can be observed through the set scale, and the suction operation is completed, achieving the effect of convenient suction and observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model.

[0017] Figure 2 It is a three-dimensional diagram of the spring of the utility model.

[0018] Figure 3 It is a cross-sectional view of the utility model.

[0019] Figure 4 It is an enlarged view of point A of the present utility model.

[0020] Among them: 1. liquid collector; 2. adjustment mechanism; 3. suction mechanism; 21. first sleeve; 22. second sleeve; 23. gear block; 24. positioning block; 25. spring; 26. sealing silicone; 27. metal sheet; 31. upper cover; 32. air inlet pipe; 33. negative pressure suction tube. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides the following technical solutions: Embodiment 1

[0023] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 A simple adjustable negative pressure suction device comprises a liquid collector 1, an adjusting mechanism 2 is arranged outside the liquid collector 1, and a suction mechanism 3 is arranged outside the liquid collector 1;

[0024] The adjustment mechanism 2 includes a first sleeve 21 and a second sleeve 22. A tooth block 23 is fixedly connected to the inner side of the first sleeve 21. A positioning block 24 is meshed with the outer side of the tooth block 23. A spring 25 is installed on the inner side of the first sleeve 21 and the second sleeve 22. A sealing silicone 26 is fixedly connected to the bottom of the spring 25.

[0025] A metal sheet 27 is fixedly connected to the top of the spring 25 . The metal sheet 27 is hollow and is fixedly connected to the top of the first sleeve 21 .

[0026] Two positioning blocks 24 are provided, and the two positioning blocks 24 are fixedly connected to the left and right sides of the second sleeve 22 respectively.

[0027] The sealing silica gel 26 is arranged inside the liquid collector 1 , and the middle parts of the first sleeve 21 and the second sleeve 22 are both arranged to be hollow.

[0028] Through the above technical solution, at this time, by setting the first sleeve 21 and the second sleeve 22 to be sleeved, the distance between the first sleeve 21 and the second sleeve 22 can be adjusted by pulling the first sleeve 21, thereby driving the metal sheet 27 on the top of the first sleeve 21 to pull the spring 25, thereby adjusting the length of the spring 25, and the positioning block 24 is engaged with the tooth block 23, so that after pulling, the positioning block 24 is engaged with the tooth block 23, so that the first sleeve 21 and the second sleeve 22 can be fixed and positioned, and the spring 25 can pull the sealing silicone 26, so that the sealing silicone 26 seals the connection between the upper cover 31 and the second sleeve 22, so that the liquid collector 1 is kept in a sealed state under a certain air pressure difference. If the negative pressure is too large, the sealing silicone 26 and the second sleeve 22 are separated, and air enters the liquid collector 1. The internal pressure of the liquid collector 1 rises until it approaches the adjusted pressure and then closes. When the inhalation flow rate is determined, the negative pressure in the liquid collector 1 depends on the stretching degree of the spring 25, thereby completing the operation of adjusting and limiting the negative pressure, thereby achieving the effect of protecting the safety of the patient. Embodiment 2

[0029] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 On the basis of the first embodiment, it is further obtained that the suction mechanism 3 includes an upper cover 31, the top of the upper cover 31 is fixedly connected with an air inlet pipe 32 and a negative pressure suction pipe 33, and one end of the upper cover 31 is provided with a scale.

[0030] The upper cover 31 is connected to the outer surface of the liquid collector 1 by threads, and the second sleeve 22 is installed on the top of the upper cover 31 .

[0031] The outsides of the air inlet pipe 32 and the negative pressure suction pipe 33 are both provided with threads, and scales are provided on the outer wall of the liquid collector 1 .

[0032] Through the above technical scheme, the upper cover 31 is threadedly connected to the liquid collector 1, so that the liquid collector 1 is sealed, and threads are provided on the outside of the air inlet pipe 32 and the negative pressure suction tube 33, so that the air inlet pipe 32 is conveniently connected to the external hose, and the negative pressure suction tube 33 is connected to the negative pressure terminal, so that negative pressure can be generated in the liquid collector 1 through the negative pressure suction tube 33, and then the hose connected to the air inlet pipe 32 guides dirt such as dirty blood, sputum, etc. into the liquid collector 1, and the situation in the liquid collector 1 can be observed through the set scale to complete the suction operation, thereby achieving the effect of convenient suction and observation.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit thereof, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A simple adjustable negative pressure suction device, comprising a liquid collector (1), characterized in that: An adjusting mechanism (2) is arranged outside the liquid collector (1), and a suction mechanism (3) is arranged outside the liquid collector (1); The adjustment mechanism (2) comprises a first sleeve (21) and a second sleeve (22); a tooth block (23) is fixedly connected to the inner side of the first sleeve (21); a positioning block (24) is meshed with the outer side of the tooth block (23); a spring (25) is installed on the inner sides of the first sleeve (21) and the second sleeve (22); and a sealing silicone (26) is fixedly connected to the bottom of the spring (25).

2. The simple adjustable negative pressure aspirator according to claim 1, characterized in that: A metal sheet (27) is fixedly connected to the top of the spring (25); the metal sheet (27) is configured to be hollow; and the metal sheet (27) is fixedly connected to the top of the first sleeve (21).

3. The simple adjustable negative pressure aspirator according to claim 1, characterized in that: Two positioning blocks (24) are provided, and the two positioning blocks (24) are respectively fixedly connected to the left and right sides of the second sleeve (22).

4. The simple adjustable negative pressure aspirator according to claim 1, characterized in that: The sealing silica gel (26) is arranged inside the liquid collector (1), and the middle parts of the first sleeve (21) and the second sleeve (22) are both arranged to be hollow.

5. The simple adjustable negative pressure aspirator according to claim 1, characterized in that: The suction mechanism (3) comprises an upper cover (31), the top of which is fixedly connected to an air intake pipe (32) and a negative pressure suction pipe (33), and one end of the upper cover (31) is provided with a scale.

6. The simple adjustable negative pressure aspirator according to claim 5, characterized in that: The upper cover (31) is connected to the outer surface of the liquid collector (1) by means of threads, and the second sleeve (22) is mounted on the top of the upper cover (31).

7. The simple adjustable negative pressure aspirator according to claim 5, characterized in that: The air inlet pipe (32) and the negative pressure suction pipe (33) are both provided with threads on their exteriors, and the scale is provided on the outer wall of the liquid collector (1).

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