Sputum collecting device

Abstract

The utility model provides a sputum collection device which comprises a sputum suction tube, a sputum suction tube, a sputum suction tube cover, a sputum suction tube cover, a sputum suction tube cover and a sputum suction tube cover cover, and one end of the sputum suction tube is a sputum suction tube head end which is used for being inserted into a respiratory tract system of a patient; the inlet end of the control valve is connected with the other end of the sputum suction tube, and the control valve is used for adjusting the flow area of the sputum suction channel; a cup body of the collecting cup is completely transparent and is marked with volume scales, and the inlet end of the collecting cup is connected with the outlet end of the control valve; the sputum suction tube, the control valve and the collection cup form an integrated structure; one end of the negative pressure extension tube is connected with the outlet end of the collecting cup; and the negative pressure air source joint is connected with the other end of the negative pressure extension pipe. The sputum suction device is simple in structure and convenient to operate, the sputum state and the sputum amount of a patient can be observed conveniently, and secondary infection caused by sputum suction operation can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to a sputum collecting device. Background Art

[0002] The sputum collection device currently used in the market includes a suction tube, a negative pressure connecting tube 1 (used to connect the suction tube and the inlet end of the waste liquid collection bag), a waste liquid collection bag (about 1500-3000ml), a negative pressure connecting tube 2 (used to connect the outlet end of the waste liquid collection bag and the inlet end of the negative pressure connector), a negative pressure connector and other components. After being connected in sequence, the outlet end of the negative pressure connector is directly inserted into the port of the negative pressure gas source to form a whole negative pressure suction system. Then the suction tube is inserted into the patient's respiratory tract to suction the sputum. At this time, the medical staff needs to wear disposable plastic gloves, press the decompression hole at the end of the suction tube, and adjust the suction pressure by adjusting the size of the exposed hole. During the suction process, the inertia of the sputum will splash out of the small hole. After the suction is completed, the suction tube is pulled out, and the sputum is also easy to splash out, which will cause a certain impact on the medical staff. After the operation is completed, only the suction tube and disposable plastic gloves are thrown away, while the contaminated negative pressure connecting tube 1 and the waste liquid collection bag are retained. At this time, there is sputum residue at the inlet end of the negative pressure connecting tube. When it is used again, it will also cause a certain impact on medical staff. After the waste liquid collection bag is filled to a certain extent, the negative pressure extension tube 1 and the waste liquid collection bag are thrown away together. In this way, the waste liquid collection bag has to be used for several days. At this time, the sputum is too full and it is easy to splash out, affecting the environment. The negative pressure drainage bag filled with sputum is placed next to the bed, which is easy to breed bacteria and unsightly.

[0003] After searching, the Chinese utility model patent with the authorization announcement number CN218075845U discloses a sputum collection device, which includes: a sputum suction tube; a sputum suction tube head end provided at one end of the sputum suction tube; a collection cup provided at the other end of the sputum suction tube, and a flow regulating valve is provided at the outlet of the collection cup; the flow regulating valve, the collection cup, the sputum suction tube and the sputum suction tube head end are an integrated structure; the flow regulating valve is connected to the negative pressure drainage bag through a negative pressure extension tube, the flow regulating valve is used to adjust the flow of negative pressure gas, and the negative pressure drainage bag is used to connect the negative pressure gas source and collect the waste liquid overflowing from the collection cup. However, this patent also has the problems of secondary infection as mentioned above, and a negative pressure drainage bag must be used, which is costly.

[0004] In order to reduce medical costs, improve the medical environment, reduce pollution, and provide medical workers with safer and more efficient operations, it is necessary to improve the existing sputum collection device. Utility Model Content

[0005] In view of the defects in the prior art, the purpose of the utility model is to provide a sputum collecting device.

[0006] The utility model is realized by the following technical solutions:

[0007] The utility model provides a sputum collecting device, which comprises:

[0008] A sputum suction tube, one end of which is a sputum suction tube head end, and the sputum suction tube head end is used to be inserted into the patient's respiratory system;

[0009] A control valve, the inlet end of which is connected to the other end of the sputum suction tube, and the control valve is used to adjust the flow area of ​​the sputum suction channel;

[0010] The collecting cup has a transparent body and a volume scale marked on the body, and its inlet end is connected to the outlet end of the control valve; the sputum suction tube, the control valve and the collecting cup form an integrated structure;

[0011] A negative pressure extension tube, one end of which is connected to the outlet end of the collection cup;

[0012] A negative pressure gas source connector is connected to the other end of the negative pressure extension tube.

[0013] Optionally, the control valve is a push-type valve, and the control valve comprises:

[0014] A slideway is sleeved on the outside of the tube body of the sputum suction tube, the slideway includes two symmetrical grooves, and a portion of the slideway located on one side of the tube body of the sputum suction tube forms an inclined surface;

[0015] A pulley, wherein first support shafts are provided on both sides of the pulley, the first support shafts are located in the groove, the pulley slides along the inclined plane, the distance between the highest point of the inclined plane and the surface of the suction tube is the same as the radius of the pulley, when the pulley is at the highest point of the inclined plane, the flow area of ​​the suction channel is the largest; when the pulley is at the lowest point of the inclined plane, the suction channel is in a closed state.

[0016] Optionally, the control valve is a crankshaft rotary valve, and the control valve comprises:

[0017] A control valve body, wherein a pair of positioning holes are provided on the upper portion of the control valve body, and the positioning holes are located on one side of the tube body of the sputum suction tube;

[0018] A curved wheel, with second support shafts on both sides of the curved wheel, the radius of the curved wheel being centered on the axis of the second support shaft and increasing with increasing angle; the second support shaft being inserted into the positioning hole, the control valve body supporting the curved wheel so that the curved wheel does not shift and rotates around the positioning hole, the shortest radius of the curved wheel being less than or equal to the distance from the center of the positioning hole to the surface of the suction tube, and the maximum radius of the curved wheel being greater than the distance from the center of the positioning hole to the bottom of the suction tube.

[0019] Optionally, the control valve is a push-type valve, and the control valve comprises:

[0020] Shell 1, the inlet end of the shell 1 is connected to the end of the sputum suction tube through medical glue;

[0021] A spring, wherein the spring is located at the bottom of the housing;

[0022] A plug, the plug is located above the spring, the upper part of the plug has a first channel, the diameter of the first channel is greater than or equal to the diameter of the tube body of the sputum suction tube, the first channel passes through the shell along the sputum flow direction, the first channel and the tube cavity of the sputum suction tube form a closed channel, and the lower part of the plug is a solid plug;

[0023] A button is located above the shell, a connecting rod is provided between the button and the plug, the plug, the connecting rod and the button form an integrated structure, and when the button is pressed to compress the spring, the relative positions of the first channel and the physical plug are changed.

[0024] Optionally, the control valve is a rotary valve, and the control valve comprises:

[0025] Shell 2, wherein the shell 2 has a transverse channel, and the inlet end of the shell 2 is connected to the end of the sputum suction tube through medical glue;

[0026] A rotating plug, the rotating plug is located inside the second shell, the rotating plug includes a second channel and a plugging surface, the second channel and the plugging surface are perpendicular to each other and are at the same height as the channel of the second shell, the cross section of the plugging surface is larger than the cross section of the channel of the second shell, and the second channel has the same diameter as the tube body of the sputum suction tube;

[0027] A knob is arranged above the rotating plug, and a connecting rod is provided between the knob and the rotating plug. The rotating plug, the connecting rod and the knob form an integrated structure; rotating the knob drives the rotating plug to rotate, thereby changing the relative position between the plug surface and the channel of the second shell.

[0028] Optionally, the outlet end of the control valve is connected to the inlet end of the collection cup by any one of a snap-on type, a plug-in type and a bonding type.

[0029] Optionally, the control valve and the inlet end of the collection cup are formed into an integral structure by integral injection molding.

[0030] Optionally, a first check valve is provided at the outlet end of the collection cup.

[0031] Optionally, a second check valve is provided at the other end of the negative pressure extension tube.

[0032] Optionally, the other end of the negative pressure extension tube is connected to the negative pressure gas source connector via a snap-on connection structure.

[0033] Compared with the prior art, the utility model has at least one of the following beneficial effects:

[0034] The sputum collection device provided by the utility model has a control valve arranged between the sputum suction tube and the collection cup. The sputum suction tube, the control valve and the collection cup form an integrated structure, which is disposable. The flow area of ​​the sputum suction channel is adjusted by the control valve to control the sputum suction process. It is a closed operation, which can prevent sputum from splashing and polluting the environment, effectively avoid secondary infection caused by sputum suction operation, and keep the entire medical environment clean. The device of the utility model adopts a miniaturized design, has a simple structure, can effectively reduce the cost of consumables, is easy for medical staff to operate, and is also easy to observe the changes in the patient's sputum color and sputum volume, which can provide more effective protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0036] Figure 1 This is a structural schematic diagram of a sputum collection device with a push-type control valve in one embodiment of the utility model;

[0037] Figure 2 It is a structural schematic diagram of a sputum suction tube with a push-type control valve in one embodiment of the utility model;

[0038] Figure 3 This is a schematic diagram of the structure of a collecting cup in one embodiment of the utility model;

[0039] Figure 4 This is a schematic diagram of the structure of a negative pressure extension tube in one embodiment of the utility model;

[0040] Figure 5 This is a schematic diagram of the structure of a negative pressure gas source connector in one embodiment of the utility model;

[0041] Figure 6 This is a schematic diagram of a sputum collection device connected to a negative pressure pump in one embodiment of the present invention;

[0042] Figure 7 It is a schematic diagram of a sputum collection device with a push-type control valve in one embodiment of the utility model during sputum suction;

[0043] Figure 8 It is a schematic diagram of a sputum collection device with a push-type control valve in one embodiment of the utility model when the sputum suction is closed;

[0044] Fig. 9 This is a structural schematic diagram of a sputum collection device with a crankshaft rotary control valve in one embodiment of the utility model;

[0045] Fig.10 It is a structural schematic diagram of a sputum suction tube with a crankshaft rotary control valve in one embodiment of the utility model;

[0046] Fig.11 It is a schematic diagram of a sputum collection device with a crankshaft rotary control valve in one embodiment of the utility model during sputum suction;

[0047] Fig.12 It is a schematic diagram of a sputum collection device with a crankshaft rotary control valve in one embodiment of the utility model when the sputum suction is closed;

[0048] Fig.13 This is a structural schematic diagram of a sputum collection device with a press-type control valve in one embodiment of the utility model;

[0049] Fig.14 This is a structural schematic diagram of a sputum suction tube with a push-type control valve in one embodiment of the utility model;

[0050] Fig.15 It is a schematic diagram of a sputum collection device with a press-type control valve in one embodiment of the utility model during sputum suction;

[0051] Fig.16 It is a schematic diagram of a sputum collection device with a press-type control valve in one embodiment of the utility model when the sputum suction is closed;

[0052] Fig.17 This is a structural schematic diagram of a sputum collection device with a rotary control valve in one embodiment of the utility model;

[0053] Fig.18 This is a schematic structural diagram of a sputum suction tube with a rotary control valve in one embodiment of the utility model;

[0054] Fig.19 It is a schematic diagram of a sputum collection device with a rotary control valve in one embodiment of the utility model during sputum suction;

[0055] Fig. 20 It is a schematic diagram of a sputum collection device with a rotary control valve in one embodiment of the utility model when the sputum suction is closed.

[0056] The corresponding reference numerals in the figure are: 1 is a negative pressure gas source connector, 2 is a negative pressure extension tube, 3 is a collection cup, 4 is a control valve, 5 is a sputum suction tube, 6 is a negative pressure pump, 101 is a pressure regulating knob, 102 is a negative pressure gas source pressure gauge, 103 is an inlet end of the negative pressure gas source connector, 104 is an outlet end of the negative pressure gas source connector, 201 is an inlet end of the negative pressure extension tube, 202 is an outlet end of the negative pressure extension tube, 301 is a cup body, and 302 is a cup cover , 303 is the first check valve, 304 is the outlet end of the collection cup, 305 is the inlet end of the collection cup, 401 is the outlet end of the control valve, 402 is a pulley, 403 is a slideway, 403 is a crankshaft, 404 is a crank, 405 is a spring, 406 is a plug, 407 is a button, 408 is a rotating plug, 409 is a knob, 501 is the head end of the suction tube, 502 is the end of the suction tube, and 503 is the body of the suction tube. DETAILED DESCRIPTION

[0057] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the utility model. These all fall within the scope of protection of the utility model.

[0058] Reference Figure 1-Figure 8 The sputum collection device in one embodiment of the utility model comprises a sputum suction tube 5, a control valve 4, a collection cup 3, a negative pressure extension tube 2 and a negative pressure gas source connector 1, wherein one end of the sputum suction tube 5 is a sputum suction tube head end 501, and the sputum suction tube head end 501 is used to be inserted into the patient's respiratory system; the inlet end of the control valve 4 is connected to the other end of the sputum suction tube 5 (i.e., the sputum suction tube end 502), and the control valve 4 is used to adjust the flow area of ​​the sputum suction channel, thereby forming a sputum suction tube 5 with a control valve 4 to control the size of the sputum suction channel. The suction pressure is small, so as to control the suction pressure. When the sputum is sucked out, the suction channel can be directly closed by the control valve 4. The cup body of the collection cup 3 is a transparent container, and the cup body is marked with a volume scale. The inlet end 305 of the collection cup is connected to the outlet end 401 of the control valve. The suction tube 5, the control valve 4 and the collection cup 3 form an integrated structure, which is a disposable structure. One end of the negative pressure extension tube 2 is connected to the outlet end 304 of the collection cup. The negative pressure gas source connector 1 is connected to the other end of the negative pressure extension tube 2. The embodiment of the utility model adjusts the flow area of ​​the suction channel through the control valve 4 to control the suction process. It is a closed operation, which can prevent sputum from splashing and polluting the environment, effectively avoid secondary infection caused by suction operation, and keep the entire medical environment clean.

[0059] In order to make the suction tube 5, the control valve 4 and the collection cup 3 form an integrated structure, in some embodiments, the end 502 of the suction tube is fixed to the inlet end of the control valve 4 with medical glue to form a suction tube 5 with a control valve 4. The tube body of the entire suction tube 5 is made of a hose material, which makes it easy to deform when under pressure. The greater the pressure, the greater the deformation, until the suction channel is finally closed.

[0060] The collecting cup 3 includes a cup body 301 and a cup cover 302 for covering the cup body 301. The inlet end 305 and the outlet end 304 of the collecting cup are both located on the cup cover 302 of the collecting cup 3. In some embodiments, the outlet end 401 of the control valve is connected to the inlet end 305 of the collecting cup by any one of a snap-on, plug-in, and bonding method. For example, medical glue is used to directly bond the outlet end 401 of the control valve to the inlet end 305 of the collecting cup, and the connection is convenient and firm.

[0061] In some other embodiments, the valve body of the control valve 4 and the cup cover 302 of the collection cup 3 are made of the same plastic, and the control valve 4 and the inlet end 305 of the collection cup are integrally injection molded. The cup cover 302 and the control valve 4 are directly connected together to form an integrated structure, which can reduce human operating errors and form a more reliable enclosed space. Thus, the suction tube 5, the control valve 4 and the collection cup 3 are combined into an integrated structure.

[0062] Continue to refer to Figure 2 In some optional embodiments, the control valve 4 is a push-type valve, and the control valve 4 includes a slide 403 and a pulley 402. The slide 403 is sleeved on the outside of the tube body 503 of the suction tube, and includes two symmetrical grooves. A first support shaft is provided on both sides of the pulley 402. The first support shaft is located in the groove and can slide freely in the groove. The slide 403 is provided on one side of the tube body 503 of the suction tube. Preferably, for ease of operation, the slide 403 is located at the upper part of the tube body 503 of the suction tube and has a certain slope, which is similar to the infusion control valve in the infusion set; and the end 502 of the suction tube The pulley 402 is adhered to the air inlet of the control valve by medical glue, so that the lumen of the suction tube and the lumen of the control valve form a closed lumen. The first support shaft of the pulley 402 is located on the slide 403, and the distance between the slide 403 and the suction tube 5 is progressive. The pulley 402 moves along the slide 403. When the pulley 402 is at the highest point of the inclined surface, the flow area of ​​the suction channel is the largest, and suction can be performed at this time; when the pulley 402 moves along the slide 403 to the lowest point of the inclined surface, the suction tube 5 is pressed to deform the suction tube 5. At this time, the flow area of ​​the suction channel is the smallest, and the suction channel is in a closed state.

[0063] In some embodiments, the collection cup 3 is transparent and has a volume scale, which is convenient for medical staff to observe the state and volume of sputum. In addition, the outlet end 304 of the collection cup is provided with a first overflow check valve 303, which has a breathable and waterproof function, plays a role in ventilation and water stopping, and can prevent sputum from overflowing the collection cup 3 and entering the negative pressure system of the hospital, thereby protecting the negative pressure system in the hospital.

[0064] In some embodiments, a second check valve is provided at the other end of the negative pressure extension tube 2. The second check valve has a breathable and waterproof function, which is the same as the first check valve 303. The second check valve also plays a ventilation and water-stopping role. The negative pressure system in the hospital is doubly protected by the first check valve 303 and the second check valve, which can provide a safer protection effect.

[0065] Exemplarily, the first check valve 303 and the second check valve are made of materials such as ventilation and water-stop filter elements or ventilation and water-stop membranes. The first check valve 303 and the second check valve can also be made of rising floats using the buoyancy of the waste liquid.

[0066] In some embodiments, the inlet end 201 of the negative pressure extension tube is connected to the outlet end 304 of the collection cup, that is, connected to the outlet end of the sputum collecting device integrated into one, and for the convenience of taking out, a plug-in connection structure can be adopted between the two. Because the outlet end 304 of the collection cup is provided with a first overflow check valve 303, after the collection cup 3 is filled with sputum, sputum will no longer overflow, so the negative pressure extension tube 2 will not be contaminated and can be left for next use. The other end of the negative pressure extension tube 2 (i.e., the outlet end 202 of the negative pressure extension tube) is connected to the inlet end 103 of the negative pressure air source connector by a snap-on connection structure, and to prevent long-term use and falling off, an iron hoop can be used at the connection to tighten. The negative pressure air source connector 1 includes a negative pressure air source pressure gauge 102, and the negative pressure air source pressure gauge 102 is provided with a pressure regulating knob 101, and the connector of the outlet end 104 of the negative pressure air source connector is directly inserted into the socket of the negative pressure air source, thereby accessing the negative pressure air source. The socket of the negative pressure gas source can be divided into German standard, American standard, national standard and other standards. The socket of the negative pressure gas source connector 1 matches the socket of the negative pressure gas source of the hospital, and the two can use the same standard connector. When the suction operation is not started, turn off the pressure by adjusting the pressure adjustment knob 101; when the suction operation needs to be started, open the pressure adjustment knob 101 and adjust it to the appropriate pressure. To ensure safety, you can try it in mineral water or saline. After confirming that the negative pressure suction is safe, insert the suction tube head 501 into the patient's respiratory system to suction the sputum; of course, if there is no negative pressure gas source interface next to the bed in the hospital, you can also directly connect the negative pressure pump 6 for operation, such as Figure 6 shown.

[0067] like Figure 7 and Figure 8As shown, when using the above-mentioned sputum collection device with a push-type valve for sputum suction, the medical staff selects a negative pressure gas source connector 1 that is consistent with the socket of the negative pressure gas source beside the patient's bed, inserts the outlet end 202 of the negative pressure extension tube into the inlet end 103 of the negative pressure gas source connector, and tightens it with an iron hoop, then inserts the plug of the negative pressure gas source connector 1 into the socket of the negative pressure gas source beside the patient's bed, adjusts the pressure adjustment knob 101, and confirms that the negative pressure is normal; then take out the sterilized disposable sputum suction device (that is, the integrated structure formed by the sputum suction tube 5, the control valve 4 and the collection cup 3), check that the packaging is intact, put on sterile medical rubber gloves, open the package, and insert the inlet end 201 of the negative pressure extension tube into the outlet end of the disposable sputum suction device, that is, the outlet end 304 of the collection cup. At this time, a closed space is formed in the whole device. To ensure safety during use, first prepare a cup of pure water or saline solution, insert the suction tube head 501 into the water, turn on the pressure adjustment knob 101, and adjust the negative pressure. When pure water or saline solution is ready to be sucked into the collection cup 3, it means that the suction device can be used normally.

[0068] At this time, the suction tube head end 501 is inserted into the patient's respiratory system to perform suction. Since the entire suction process is a non-visual operation, the location of the sputum is not clear. The medical staff can determine the location of the sputum by listening to the sound of suction. When the suction volume is small, the pulley 402 can be pushed to the middle position along the slideway 403. At this time, when the pulley 402 presses part of the tube body 503 of the suction tube, the flow area of ​​the suction channel becomes smaller, and the suction force also becomes smaller accordingly; when the suction volume of the suction tube head end 501 is large, the pulley 402 can be pushed to the middle position along the slideway 403. 2 is pushed along the slideway 403 to the top of the slideway 403. At this time, the pulley 402 does not press the tube body 503 of the sputum suction tube. At this time, the flow area of ​​the sputum suction channel is the largest, and the suction force is also the largest. When the sputum fills the collection cup 3, the first overflow check valve 303 at the outlet end 304 of the collection cup prevents the sputum from overflowing. At this time, the sputum suction tube head end 501 can be directly drawn out from the patient's respiratory system, the existing sputum suction device is pulled out, and a new sputum suction device is replaced and re-inserted into the inlet end 201 of the negative pressure extension tube, and the sputum suction operation can be continued. To ensure that the sputum is sucked out clean, the suction tube head end 501 can be moved back and forth in the patient's respiratory system one or two times until the suction sound is no longer heard, indicating that the suction is over. At this time, the medical staff can push the pulley 402 along the slide 403 to the bottom of the slide 403. At this time, the pressure applied by the pulley 402 to the tube body 503 of the suction tube is the largest, and the flow area of ​​the suction channel is the smallest, so the suction channel is closed. At the same time, the negative pressure air source is turned off by adjusting the pressure adjustment knob 101, and then the suction tube head end 501 is pulled out of the patient's respiratory system, and then the disposable suction device is pulled out from the inlet end 201 of the negative pressure extension tube, and the contaminated suction device is thrown into the medical waste box to complete the suction operation. During the whole suction process, the sputum flows from the suction tube head 501 to the tube body 503 of the suction tube, and then to the suction tube end 502, and finally reaches the collection cup 3. The sputum is always in a closed space, so it can better protect medical staff. At the same time, the whole suction device is disposable, and there will no longer be a sputum collection bag placed beside the bed, ensuring a good bedside environment. The first overflow check valve 303 on the collection cup 3 can effectively prevent the sputum from overflowing the collection cup 3, so that the negative pressure extension tube 2 is not contaminated, so the negative pressure extension tube 2 can be retained until the next use.

[0069] Reference Figure 9-12In some optional embodiments, the control valve 4 is a crankshaft rotating valve, and the control valve 4 includes a control valve body 403 and a crankshaft 404. A pair of positioning holes is provided on the upper portion of the control valve body 403, and second support shafts are provided on both sides of the crankshaft 404. The radius of the crankshaft 404 is centered on the axis of the second support shaft and increases with the increase of the angle. The second support shaft can just be inserted into the pair of positioning holes. The control valve body 403 supports the crankshaft 404 to prevent it from shifting and to allow the crankshaft 404 to rotate around the positioning hole. The end 502 of the suction tube is adhered to the air inlet of the control valve by medical glue, so that the lumen of the suction tube and the lumen of the control valve form a closed lumen, and the crankshaft 404 is rotated to squeeze the body 503 of the suction tube during rotation. Specifically, the curved wheel 404 is installed in the positioning hole in the upper part of the control valve body 403 and is located above the suction tube 5. When the diameter of the curved wheel 404 is the smallest (narrowest) and is located above the suction tube 5, the suction tube 5 cannot be compressed, and suction can be performed at this time. The maximum radius of the curved wheel 404 must be larger than the distance from the center hole of the valve body to the bottom of the suction tube; by rotating the curved wheel 404, the lumen of the suction tube 5 is forced to gradually become smaller until the curved wheel 404 cannot be rotated. At this time, the flow area of ​​the suction channel is the smallest, so that the suction channel in the suction tube 5 is in a closed state. Of course, the suction tube 5 can also be used for suction by rotating in the opposite direction.

[0070] Continue to refer to Figure 9-12 When using a sputum collection device with a crankshaft rotating valve for suctioning, the preparation work, replacement of the suction device and end of work are the same as those of the sputum collection device with a push-type valve. The difference is that during the suction process, the crankshaft 404 rotates around a pair of positioning holes on the control valve body 403. The radius of the crankshaft 404 increases with the increase of the angle. The crankshaft shaft 403 is above the suction tube 5. By rotating the crankshaft 404, the radius of the tube body 503 of the suction tube from the crankshaft 404 is changed. When the minimum diameter is above the suction tube 5, the radius of the tube body 503 of the suction tube is changed. When the sputum is not much, the curved wheel 404 can be rotated to make the curved wheel 404 partially compress the sputum suction tube 5, at which time the sputum suction channel flow area is moderate and the suction force is small; when there is no sputum, the curved wheel 404 can be rotated until the curved wheel 404 cannot rotate, at which time the sputum suction channel flow area is the smallest and the sputum suction channel is closed. Of course, if the sputum is not sucked clean, it can be rotated in the opposite direction, and the sputum suction tube 5 will rebound naturally, and the sputum suction work can be performed again until the sputum suction is completed. During the entire sputum suction process, the sputum is always in the enclosed space and will not be overflowed, so that the negative pressure extension tube 2 is not contaminated and the negative pressure extension tube 2 can be retained until the next use.

[0071] Reference Figure 13-Figure 16In some optional embodiments, the control valve 4 is a push-type valve, and the control valve 4 includes a housing 1, a spring 405, a plug 406 and a button 407. The end 502 of the suction tube and the inlet end (front air inlet) of the shell one are connected by medical glue; the spring 405 is located at the bottom of the shell one; the plug 406 is located above the spring 405. Specifically, a square groove is provided in the shell one, and the spring 405 is located at the bottom of the square groove. The plug 406 fits seamlessly with the square groove. The upper part of the plug 406 has a first channel. The diameter of the first channel is greater than or equal to the diameter of the tube body 503 of the suction tube. The first channel passes through the shell one along the flow direction of sputum. Since the end of the tube body 503 of the suction tube and the front air inlet (inlet end) of the shell one are connected by medical glue, the first channel and the tube cavity of the suction tube form a closed channel, and the lower part of the plug 406 is a solid plug; the button 407 is located above the shell one, and a connecting rod is provided between the button 407 and the plug 406. The plug 406, the connecting rod and the button 407 form an integrated structure.

[0072] Exemplarily, the plug 406 is a square plug, which is divided into an upper and lower body structure. The upper part of the plug 406 has a first channel, the diameter of the first channel is greater than or equal to the diameter of the tube body 503 of the sputum suction tube, and the lower part of the plug 406 is a solid plug. The plug 406, the connecting rod, and the button 407 are an integral structure. When the button 407 is pressed to compress the spring 405, the relative position of the first channel and the solid plug is changed. Specifically, when the spring 405 is not under pressure, the lower part of the plug 406 is just blocked on the sputum suction channel, and the sputum suction is closed at this time. When the button 407 is pressed, the spring 405 is compressed and shortened. When the spring 405 is no longer compressed and shortened, the first channel of the upper part of the plug 406 is just on the sputum suction channel, and the first channel of the upper part of the plug 406 and the shell become the sputum suction channel, so that the sputum suction work can be performed.

[0073] Continue to refer to Figure 13-Figure 16 When the sputum collection device with a push-type valve is used for sputum suction, the preparation work, replacement of the sputum suction device and the end of the work are consistent with the above-mentioned embodiment, and the difference is that: during the sputum suction process, the pressure of sputum suction is adjusted by applying appropriate pressure to the button 407. Specifically, when the button 407 is pressed, because the upper part of the plug 406 has a first channel, the upper part of the plug 406 is just on the sputum suction channel, and it is connected with the sputum suction channel, and the suction force is the largest at this time; when the button 407 is partially released to make the bottom of the plug 406 suspended in the air, the first channel of the upper part of the plug 406 is partially connected with the sputum suction channel, and the suction force is correspondingly reduced; when the sputum suction is finished, the button 407 is released, and the sputum suction channel is completely blocked by the lower part of the plug 406, and the sputum suction is stopped. During the whole sputum suction process, the sputum is always in the enclosed space and will not be overflowed, so that the negative pressure extension tube 2 is not contaminated, and the negative pressure extension tube 2 can be retained until the next use.

[0074] Reference Figure 17-Figure 20 In some optional embodiments, the control valve 4 is a rotary valve, which includes a shell 2, a rotary plug 408 and a knob 409. The shell 2 has a transverse channel, and the air inlet (inlet end) at its front end is connected to the end of the suction tube by medical glue; the rotary plug 408 is located inside the shell 2. Specifically, the shell 2 has a circular groove built in the middle of the channel, and the rotary plug is installed in the circular groove. The diameter of the rotary plug 408 is consistent with the diameter of the circular groove and can fit tightly; the rotary plug 408 has a second channel and a plugging surface, and the second channel and The blocking surfaces are perpendicular to each other and are at the same height as the channel of the second shell. In order to ensure that the blocking surface of the rotating plug 408 can block the channel of the second shell, the cross section of the blocking surface must be larger than the cross section of the channel of the second shell. The second channel has the same diameter as the tube body 503 of the suction tube. Since the end of the tube body 503 of the suction tube is connected to the inlet end of the second shell by medical glue, the lumen of the suction tube and the lumen of the second shell form a closed lumen. The knob 409 is arranged above the rotating plug 408 through a connecting rod. The rotating plug 408, the connecting rod and the knob 409 form an integrated structure. By rotating the knob 409, the rotating plug 408 is driven to rotate, and the relative position of the channel of the second shell and the blocking surface is changed, thereby changing the size of the channel of the second shell. When the second channel is rotated to be parallel to the second channel of the shell, the channel is the largest and the suction force is also the largest. When the knob is rotated 90 degrees, the second channel and the second channel of the shell are perpendicular, and the blocking surface completely blocks the channel, so that the suction force is the smallest, and the suction work is stopped.

[0075] Continue to refer to Figure 17-Figure 20 When the sputum collection device with a rotary valve is used for suction operation, the preparation work, replacement of the suction device and the end of the work are consistent with the above-mentioned embodiment, and the difference is that: during the suction process, the angle of the rotating plug 408 is adjusted by rotating the angle of the knob 409. Because the cross section of the rotating plug 408 has a second channel, and the diameter is consistent with the diameter of the suction tube, when the second channel is rotated to be parallel to the suction channel, the second channel and the suction channel are completely connected, and the suction force is also the largest; when the rotation angle is less than 90 degrees, the second channel and the suction channel are partially connected, and the suction force is correspondingly reduced. When the rotation angle is 90 degrees, the second channel is perpendicular to the suction channel, and the plug surface blocks the suction channel, and the suction is stopped. During the entire suction process, the sputum is always in the enclosed space and will not be overflowed, so that the negative pressure extension tube 2 is not contaminated, and the negative pressure extension tube can be retained until the next use.

[0076] The sputum collection device provided by the above embodiment of the utility model has a control valve disposed between the sputum suction tube and the collection cup. The sputum suction tube, the control valve and the collection cup form an integrated structure, which is disposable. The flow area of ​​the sputum suction tube is adjusted by the control valve to control the sputum suction process. It is a closed operation, which can prevent sputum from splashing and polluting the environment, effectively avoid secondary infection, and keep the entire medical environment clean. The device in the above embodiment of the utility model adopts a miniaturized design, has a simple structure, is easy for medical staff to operate, and can provide more effective protection.

[0077] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various modifications or variations within the scope of the claims, which does not affect the essence of the present invention.

Claims

1. A sputum collection device, characterized in that: include: A sputum suction tube, one end of which is a sputum suction tube head end, and the sputum suction tube head end is used to be inserted into the patient's respiratory system; A control valve, the inlet end of which is connected to the other end of the sputum suction tube, and the control valve is used to adjust the flow area of ​​the sputum suction channel; The collecting cup has a transparent body and a volume scale marked on the body, and its inlet end is connected to the outlet end of the control valve; the sputum suction tube, the control valve and the collecting cup form an integrated structure; A negative pressure extension tube, one end of which is connected to the outlet end of the collection cup; A negative pressure gas source connector is connected to the other end of the negative pressure extension tube.

2. The sputum collection device according to claim 1, characterized in that: The control valve is a push-type valve, and the control valve comprises: A slideway is sleeved on the outside of the tube body of the sputum suction tube, the slideway includes two symmetrical grooves, and a portion of the slideway located on one side of the tube body of the sputum suction tube forms an inclined surface; A pulley, wherein first support shafts are provided on both sides of the pulley, the first support shafts are located in the groove, the pulley slides along the inclined plane, the distance between the highest point of the inclined plane and the surface of the suction tube is the same as the radius of the pulley, when the pulley is at the highest point of the inclined plane, the flow area of ​​the suction channel is the largest; when the pulley is at the lowest point of the inclined plane, the suction channel is in a closed state.

3. The sputum collection device according to claim 1, characterized in that: The control valve is a crankshaft rotary valve, and the control valve comprises: A control valve body, wherein a pair of positioning holes are provided on the upper portion of the control valve body, and the positioning holes are located on one side of the tube body of the sputum suction tube; A curved wheel, with second support shafts on both sides of the curved wheel, the radius of the curved wheel being centered on the axis of the second support shaft and increasing with increasing angle; the second support shaft being inserted into the positioning hole, the control valve body supporting the curved wheel so that the curved wheel does not shift and rotates around the positioning hole, the shortest radius of the curved wheel being less than or equal to the distance from the center of the positioning hole to the surface of the suction tube, and the maximum radius of the curved wheel being greater than the distance from the center of the positioning hole to the bottom of the suction tube.

4. The sputum collection device according to claim 1, characterized in that: The control valve is a push-type valve, and the control valve comprises: Shell 1, the inlet end of the shell 1 is connected to the end of the sputum suction tube through medical glue; A spring, wherein the spring is located at the bottom of the housing; A plug, the plug is located above the spring, the upper part of the plug has a first channel, the diameter of the first channel is greater than or equal to the diameter of the tube body of the sputum suction tube, the first channel passes through the shell along the sputum flow direction, the first channel and the tube cavity of the sputum suction tube form a closed channel, and the lower part of the plug is a solid plug; A button is located above the shell, a connecting rod is provided between the button and the plug, the plug, the connecting rod and the button form an integrated structure, and when the button is pressed to compress the spring, the relative positions of the first channel and the physical plug are changed.

5. The sputum collection device according to claim 1, characterized in that: The control valve is a rotary valve, and the control valve comprises: Shell 2, wherein the shell 2 has a transverse channel, and the inlet end of the shell 2 is connected to the end of the sputum suction tube through medical glue; A rotating plug, the rotating plug is located inside the second shell, the rotating plug includes a second channel and a plugging surface, the second channel and the plugging surface are perpendicular to each other and are at the same height as the channel of the second shell, the cross section of the plugging surface is larger than the cross section of the channel of the second shell, and the second channel has the same diameter as the tube body of the sputum suction tube; A knob is arranged above the rotating plug, and a connecting rod is provided between the knob and the rotating plug. The rotating plug, the connecting rod and the knob form an integrated structure; rotating the knob drives the rotating plug to rotate, thereby changing the relative position between the plug surface and the channel of the second shell.

6. The sputum collection device according to claim 1, characterized in that: The outlet end of the control valve is connected to the inlet end of the collection cup by any one of a snap-on type, a plug-in type and a bonding type.

7. The sputum collection device according to claim 1, characterized in that: The control valve and the inlet end of the collection cup are integrally formed by integral injection molding.

8. The sputum collection device according to claim 1, characterized in that: The outlet end of the collection cup is provided with a first overflow check valve.

9. The sputum collection device according to claim 1, characterized in that: The other end of the negative pressure extension tube is provided with a second overflow check valve.

10. The sputum collection device according to claim 1, characterized in that: The other end of the negative pressure extension tube is connected to the negative pressure gas source connector via a snap-on connection structure.

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