A device for sucking oral and nasal secretions

Abstract

The present invention discloses a device for sucking oral and nasal secretions, which solves the technical problems that the existing sputum suction bag has cross contamination and is easy to damage the nasal mucosa or oral mucosa. The present invention includes a sputum suction tube, the rear end of which is connected to a negative pressure unit, the front end of the sputum suction tube is connected to an oral and nasal aspirator, and the middle part is detachably connected to a drainage can or a drainage bag, and the oral and nasal aspirator includes a hand-held bin, the front end of the hand-held bin is connected to a flexible suction terminal, the rear end is connected to the sputum suction tube, the front end of the hand-held bin is connected to the outside through the suction terminal, and a side hole is opened on one side of the hand-held bin. The present invention is easy to operate, the negative pressure is easy to control, and cross contamination and damage to the nasal mucosa or oral mucosa can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of clinical secretion suction, and in particular relates to an oral and nasal secretion suction device. Background Art

[0002] The disposable sputum suction device currently used clinically includes a sputum suction tube and a disposable sterile glove. During use, it is necessary to first suck the oral secretions and then the nasal secretions, or first suck the endotracheal tube secretions and then the oral and nasal secretions. This method is to avoid the suction tube being contaminated after the first suction, and when another suction is performed, the suction tube contaminated by the first suction secretions will be contaminated again, so it is required to first suck the parts with higher cleanliness requirements. Even so, the oral cavity and / or nasal cavity are forced to use the contaminated suction tube for suction again, which is easy to cause cross contamination.

[0003] Secondly, the nasal cavity is relatively thin. When using a suction tube to enter the nasal cavity for negative pressure suction, it is extremely uncomfortable due to the presence of foreign matter in the nasal cavity, and the adequacy of secretion suction cannot be guaranteed. In addition, because the pressure difference of the negative pressure machine is difficult to accurately control manually, when the pressure difference is too large, the nasal mucosa will be attracted, causing mucosal damage and bleeding, and this phenomenon is relatively common. Especially in newborns and infants, the nasal cavity of the child is very easy to be damaged because of its small size. The damaged nasal mucosa or oral mucosa will cause infection due to the above-mentioned cross contamination. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a device for sucking oral and nasal secretions, which solves the technical problems that the existing sputum suction bags are cross-contaminated and easily damage the nasal mucosa or oral mucosa.

[0005] The technical solution of the present invention is implemented as follows: an oral and nasal secretion suction device comprises a sputum suction tube, the rear end of the sputum suction tube is connected to a negative pressure unit, the front end of the sputum suction tube is connected to an oral and nasal suction device, and the middle part is detachably connected to a drainage can or a drainage bag, the oral and nasal suction device comprises a hand-held bin, the front end of the hand-held bin is connected to a flexible suction end, the rear end is connected to the sputum suction tube, the front end of the hand-held bin is connected to the outside through the suction end, and a side hole is opened on one side of the hand-held bin.

[0006] Furthermore, the suction end includes a spherical plug, the diameter of the spherical plug is larger than the diameter of the suction end, and a drainage channel connected to the hand-held bin is opened in the middle of the spherical plug.

[0007] Furthermore, the negative pressure unit includes a shell connected to the suction tube, a piston is arranged in the shell, a piston rod is connected to the rear center of the piston, the piston divides the inner cavity of the shell into a rod cavity and a rodless cavity, the rear end of the suction tube is connected to the rodless cavity, a first one-way valve is arranged between the rodless cavity and the suction tube, and a second one-way valve is arranged on the side wall of the rodless cavity. The first one-way valve can prevent the compressed air in the rodless cavity from flowing into the suction tube and can block the secretions in the suction tube; the second one-way valve can make the compressed air in the rodless cavity be discharged smoothly and prevent the outside atmosphere from entering the rodless cavity in a negative pressure state.

[0008] Furthermore, a fixed handle is arranged on the outer side of the shell, and a movable handle inserted into the shell is hingedly connected to the fixed handle, and one end of the movable handle extending into the shell is hingedly connected to the rear end of the piston rod.

[0009] Furthermore, a pin is provided at the rear end of the piston rod, and a long hole is provided at one end of the movable handle extending into the housing to be slidably hinged with the pin. The operator can discharge the air in the rodless cavity by reciprocatingly pressing the movable handle to form a negative pressure.

[0010] Furthermore, a spring for pressing the piston is arranged in the rodless cavity, and the spring is arranged coaxially with the piston rod. Under the action of the spring, when the operator does not press the movable handle, the piston can automatically draw a vacuum under the action of the elastic force.

[0011] Furthermore, the front end of the shell is provided with an externally threaded end, the externally threaded end is threadedly connected to an internally threaded sleeve, the internally threaded sleeve includes a rear half threadedly connected to the externally threaded end and a front half inserted into the rear end of the suction tube, a vent is provided at the front port of the front half, and a waterproof and breathable membrane is provided on the front side of the vent to further prevent secretions in the suction tube from entering the negative pressure unit.

[0012] Furthermore, the first one-way valve includes a hollow bracket clamped between the external threaded end and the internal threaded sleeve, a mounting hole is provided in the middle of the hollow bracket, a connecting column is inserted in the mounting hole, and a one-way sealing membrane that fits with the hollow bracket is provided on the side of the connecting column facing the rodless cavity.

[0013] Furthermore, the second one-way valve comprises a hollow bracket connected to the housing, and a one-way sealing membrane in contact with the hollow bracket is provided on the side of the hollow bracket facing away from the rodless cavity.

[0014] Furthermore, the rear end of the oral and nasal suction device is provided with a plug inserted into the sputum suction tube, and the plug is provided with a raised sealing ring.

[0015] One end of the oral and nasal aspirator in the present invention is connected to a negative pressure unit, and the other end is placed at the patient's nostril port. The outer edge of the spherical plug can block the nostril. When the operator blocks the side hole with his hand, a closed negative pressure effect is formed with the negative pressure unit, which can attract the secretions in the nostril; when the operator releases the side hole, the internal cavity of the oral and nasal aspirator is connected to the external atmospheric pressure, and there is no negative pressure; by intermittently blocking the side hole, the pressure difference can be reliably controlled, and the spherical plug avoids damage to the nasal mucosa while ensuring closed suction. When adults or older children are performing nasal suction, the operator can close the patient's mouth for suction, so that the mouth and nose form a closed space, which is more effective. First, the present invention avoids the contamination caused by the contaminated suction tube being used again to attract the oral and nasal cavities by using a method of external suction of the patient's nasal cavity. Secondly, when using the oral and nasal aspirator, there is no need to insert the suction tube into the patient's nasal cavity again, which causes the patient to be intolerant and uncooperative. The oral and nasal suction device only needs to be placed at the nostril, and the oral cavity is closed, which reduces the damage to the nasal mucosa caused by suction. In addition, when the patient has poor swallowing function and a lot of oral secretions, the original method requires the suction tube to be repeatedly rotated and coiled in the oral cavity for suction. The operator can directly put the oral and nasal suction device in the present invention into the oral cavity for suction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0019] Figure 3 for Figure 1 The enlarged view of point B in the middle;

[0020] Figure 4 for Figure 1 Enlarged view of point C in the middle. DETAILED DESCRIPTION

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

[0022] Embodiment 1, a device for sucking oral and nasal secretions, such as Figure 1 As shown, it includes a sputum suction tube 2, the rear end of which is connected to a negative pressure unit 1, and the negative pressure unit 1 can enable the sputum suction tube 2 to suction and discharge secretions in the mouth and nose.

[0023] The negative pressure unit 1 includes a housing 1-1 connected to the suction tube 2, a piston 1-2 is arranged in the housing 1-1, a piston rod 1-5 is connected to the rear center of the piston 1-2, the piston 1-2 divides the inner cavity of the housing 1-1 into a rod cavity 1-3 and a rodless cavity 1-4, the rear end of the suction tube 2 is connected to the rodless cavity 1-4, a first one-way valve 4 is arranged between the rodless cavity 1-4 and the suction tube 2, and a second one-way valve 5 is arranged on the side wall of the rodless cavity 1-4. The first one-way valve 4 can prevent the compressed air in the rodless cavity 1-4 from flowing into the suction tube 2, and can also block the secretions in the suction tube 2; the second one-way valve 5 can not only allow the compressed air in the rodless cavity 1-4 to be discharged smoothly, but also prevent the outside atmosphere from entering the rodless cavity 1-4 in a negative pressure state.

[0024] like Figure 4 As shown, the front end of the shell 1-1 is provided with an external threaded end 6-1, and the external threaded end 6-1 is threadedly connected to the internal threaded sleeve 6-2. The internal threaded sleeve 6-2 includes a rear half 6-3 threadedly connected to the external threaded end 6-1 and a front half 6-4 inserted into the rear end of the suction tube 2. A vent 6-5 is provided at the front port of the front half 6-4, and a waterproof breathable membrane 6-6 is provided on the front side of the vent 6-5, which can further prevent the secretions in the suction tube 2 from entering the negative pressure unit.

[0025] The first one-way valve 4 includes a hollow bracket 4-1 clamped between the external threaded end 6-1 and the internal threaded sleeve 6-2, a mounting hole is provided in the middle of the hollow bracket 4-1, a connecting column 6-7 is inserted in the mounting hole, and a one-way sealing membrane 6-8 is provided on the side of the connecting column 6-7 facing the rodless cavity 1-4 and is in contact with the hollow bracket 4-1. The structure of the second one-way valve 5 is similar to that of the first one-way valve 4, including a hollow bracket connected to the housing 1-1, and a one-way sealing membrane is provided on the side of the hollow bracket 4-1 facing away from the rodless cavity 1-4 and is in contact with the hollow bracket. When the piston 1-2 is pushed forward, the volume of the rodless chamber 1-4 becomes smaller, and the air therein is discharged through the second one-way valve 5. At the same time, the one-way sealing membrane 6-8 in the first one-way valve 4 fits on the hollow bracket 4-1 to prevent the air from flowing back into the suction tube 2; when the piston 1-2 is pushed backward, the volume of the rodless chamber 1-4 becomes larger and the pressure becomes lower. Then, under the action of the pressure difference, the one-way sealing membrane of the second one-way valve fits on its own hollow bracket to prevent outside air from entering the rodless chamber 1-4 through the second one-way valve 5. At the same time, under the action of the pressure difference, the one-way sealing membrane 6-8 of the first one-way valve 4 is separated from its hollow bracket 4-1, so that a negative pressure for drainage is formed in the suction tube 2.

[0026] The front end of the sputum suction tube 2 is connected with an oral and nasal suction device 3, and the middle part is detachably connected with a drainage pot or a drainage bag. The secretions in the patient's mouth and nose are discharged into the drainage pot 7 through the oral and nasal suction device 3, so as to collect and process the secretions sucked out.

[0027] The oral and nasal suction device 3 includes a handheld chamber 3-1 with a hollow interior. The front end of the handheld chamber 3-1 is connected to a flexible suction terminal 3-2, and the rear end is connected to the sputum suction tube 2. The front end of the handheld chamber 3-1 is connected to the outside through the suction terminal 3-2, and a side hole 3-3 is provided on one side of the handheld chamber 3-1. When in use, the outer edge of the suction terminal 3-2 can block the nostrils. When the operator blocks the side hole 3-3 with his hand, the nasal suction device 3 and the negative pressure unit form a closed negative pressure effect, which can attract secretions in the nostrils; when the operator releases the side hole 3-3, the internal cavity of the oral and nasal suction device 3 is connected to the external atmospheric pressure, and there is no negative pressure; by intermittently blocking the side hole 3-3, the pressure difference can be reliably controlled.

[0028] Furthermore, if Figure 3 As shown, the rear end of the oral and nasal suction device 3 is provided with a plug 3-6 inserted into the sputum suction tube 2, and the plug 3-6 is provided with a raised sealing ring 3-7 to fully ensure the sealing performance.

[0029] Furthermore, if Figure 2 As shown, the suction end 3-2 includes a spherical plug 3-5, the diameter of which is larger than that of the suction end 3-2, and a drainage channel 3-4 connected to the hand-held bin 3-1 is provided in the middle of the spherical plug 3-5. The spherical plug 3-5 avoids damage to the nasal mucosa while ensuring airtight suction. When an adult or older child is performing nasal suction, the operator can close the patient's mouth for suction, so that the mouth and nose form an airtight space, which has a better effect.

[0030] Embodiment 2, a device for sucking oral and nasal secretions, such as Figure 1 As shown, a fixed handle 1-7 is provided on the outer side of the housing 1-1, and the fixed handle 1-7 is hinged with a movable handle 1-6 inserted into the housing 1-1, and one end of the movable handle extending into the housing 1-1 is hinged with the rear end of the piston rod 1-5. When the operator holds the movable handle 1-6 and rotates it relative to the fixed handle 1-7, the movable handle 1-6 will drive the piston rod 1-5 to move, and then drive the piston 1-2 to move in the housing 1-1, so that one-handed operation can be achieved to form negative pressure, and the operation is very convenient.

[0031] Specifically, the rear end of the piston rod 1-5 is provided with a pin 1-8, and one end of the movable handle 1-6 extending into the housing 1-1 is provided with a long hole 1-9 that is slidably hinged with the pin. The operator can expel the air in the rodless chamber 1-4 by reciprocatingly pressing the movable handle 1-6 to form a negative pressure.

[0032] Further, a spring 1-10 for pressing the piston 1-2 is arranged in the rodless chamber 1-4, and the spring 1-10 is arranged coaxially with the piston rod 1-5. Under the action of the spring 1-10, when the operator does not press the movable handle 1-6, the piston 1-2 can automatically evacuate to form a negative pressure under the action of the elastic force.

[0033] The other structures of this embodiment are the same as those of Embodiment 1.

[0034] The details not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for sucking oral and nasal secretions, comprising a sputum suction tube (2), the rear end of which is connected to a negative pressure unit (1). Features: The front end of the sputum suction tube (2) is connected to an oral and nasal suction device (3), and the middle part is detachably connected to a drainage can (7) or a drainage bag. The oral and nasal suction device (3) comprises a hand-held bin (3-1) with a hollow interior. The front end of the hand-held bin (3-1) is connected to a flexible suction end (3-2), and the rear end is connected to the sputum suction tube (2). The front end of the hand-held bin (3-1) is connected to the outside through the suction end (3-2), and a side hole (3-3) is provided on one side of the hand-held bin (3-1); The suction end (3-2) comprises a spherical plug (3-5), the diameter of the spherical plug is larger than the diameter of the suction end (3-2), and a drainage channel (3-4) communicating with the handheld bin (3-1) is provided in the middle of the spherical plug (3-5); The negative pressure unit (1) comprises a housing (1-1) connected to a sputum suction tube (2), a piston (1-2) being arranged in the housing (1-1), a piston rod (1-5) being connected to the rear center of the piston (1-2), the piston (1-2) dividing the inner cavity of the housing (1-1) into a rod cavity (1-3) and a rodless cavity (1-4), the rear end of the sputum suction tube (2) being connected to the rodless cavity (1-4), a first one-way valve (4) being arranged between the rodless cavity (1-4) and the sputum suction tube (2), and a second one-way valve (5) being arranged on the side wall of the rodless cavity (1-4); The rear end of the piston rod (1-5) is provided with a pin shaft (1-8), and one end of the movable handle (1-6) extending into the housing (1-1) is provided with a long hole (1-9) that is slidably hingedly matched with the pin shaft (1-8).

2. The oral and nasal secretion suction device according to claim 1, characterized in that: A spring (1-10) for pressing the piston (1-2) is arranged in the rodless chamber (1-4); the spring (1-10) and the piston rod (1-5) are coaxially arranged.

3. The oral and nasal secretion suction device according to claim 2, characterized in that: The front end of the housing (1-1) is provided with an external threaded end (6-1), the external threaded end (6-1) is threadedly connected to an internal threaded sleeve (6-2), and the internal threaded sleeve (6-2) It comprises a rear half (6-3) threadedly connected to an external threaded end (6-1) and a front half (6-4) inserted into the rear end of a sputum suction tube (2), a vent hole (6-5) being provided at the front end of the front half (6-4), and a waterproof breathable membrane (6-6) being provided at the front side of the vent hole (6-5).

4. The oral and nasal secretion suction device according to claim 3, characterized in that: The first one-way valve (4) comprises a hollow bracket (4-1) clamped between an externally threaded end (6-1) and an internally threaded sleeve (6-2), a mounting hole being provided in the middle of the hollow bracket (4-1), a connecting column (6-7) being inserted into the mounting hole, and a one-way sealing membrane (6-8) in contact with the hollow bracket (4-1) being provided on the side of the connecting column (6-7) facing the rodless cavity (1-4).

5. The oral and nasal secretion suction device according to claim 4, characterized in that: The second one-way valve (5) comprises A hollow bracket connected to the housing (1-1), wherein a one-way sealing film in contact with the hollow bracket is provided on a side of the hollow bracket (4-1) facing away from the rodless cavity (1-4).

6. The oral and nasal secretion suction device according to claim 5, characterized in that: The rear end of the oral-nasal suction device (3) is provided with a plug (3-6) inserted into the sputum suction tube (2), and the plug (3-6) is provided with a raised sealing ring (3-7).

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