A portable negative pressure saliva collector

Abstract

This invention belongs to the field of saliva collection technology, specifically referring to a portable negative pressure saliva collector, comprising a dual-channel assembly, a flow rate feedback assembly, a drainage and filtering assembly, an adaptive pressure regulating assembly, a collection assembly, and a baffle assembly. The dual-channel assembly is disposed on the collection assembly, the flow rate feedback assembly is slidably disposed within the dual-channel assembly, the drainage and filtering assembly is disposed on the dual-channel assembly, the adaptive pressure regulating assembly is disposed within the dual-channel assembly, and the baffle assembly is disposed on the dual-channel assembly. This invention utilizes airflow changes during partial blockage to achieve floating adjustment of the floating piston, thereby altering the pressure difference across the drainage tube. This results in automatically increasing the pressure difference when the drainage tube is blocked and automatically restoring the pressure difference after clearing.

Description

Technical Field

[0001] This invention belongs to the field of saliva collection technology, specifically referring to a portable negative pressure saliva collector. Background Technology

[0002] When patients are under general anesthesia or have instruments such as gastroscopy in their esophagus, they may have difficulty swallowing on their own. However, due to the continuous stimulation during the examination or surgery, the amount of saliva secreted in the mouth may even increase. Therefore, it is necessary to collect and clean the saliva, sputum (sputum may also be coughed into the mouth) and other liquids in the mouth.

[0003] Most current saliva collectors use constant pressure collection. If phlegm or other mucus adheres to the inner wall of the drainage tube, it will reduce the pressure and airflow speed at the collection head, affecting the collection effect. Summary of the Invention

[0004] In response to the above situation and to overcome the shortcomings of the prior art, this invention proposes a negative pressure saliva collector that can sense the blockage of the drainage tube and maintain the airflow speed by increasing the pressure difference. By changing the airflow when there is a partial blockage, the floating piston can be adjusted to change the pressure difference at both ends of the drainage tube, thereby achieving the technical effect of automatically increasing the pressure difference when the drainage tube is blocked and automatically restoring the pressure difference after cleaning.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a portable negative pressure saliva collector, including a dual-channel component, a flow rate feedback component, a drainage and filtering component, an adaptive pressure regulating component, a collection component, and a baffle component. The dual-channel component is disposed on the collection component, the flow rate feedback component is slidably disposed in the dual-channel component, the drainage and filtering component is disposed on the dual-channel component, the adaptive pressure regulating component is disposed in the dual-channel component, and the baffle component is disposed on the dual-channel component. Furthermore, the dual-channel assembly includes a dual-channel regulator, a three-way pipe, and a sealing plate. The dual-channel regulator is disposed on the collecting assembly, the sealing plate is disposed at one end of the dual-channel regulator, the first connector of the three-way pipe is disposed in the sealing plate, and one end of the three-way pipe is located inside the dual-channel regulator.

[0006] By monitoring the gas flow rate changes within the dual-channel regulator, the blockage status inside the drainage tube can be fed back, and when a blockage occurs, the clearance speed of the blockage can be accelerated by increasing the pressure difference.

[0007] Preferably, the dual-channel regulator is provided with a partition, and the partition is provided with vent holes.

[0008] Furthermore, the flow rate feedback component includes a floating piston, a floating support, and a feedback spring. The floating piston is slidably disposed in the dual-channel regulator, and an array of flow mesh holes is provided on the floating piston. The floating support is fixed to the floating piston, and a circular plate is provided on the floating support. One end of the feedback spring is disposed on the circular plate.

[0009] When the airflow passes through the floating piston, it also exerts a thrust on the floating piston, and the magnitude of the thrust is positively correlated with the gas flow rate. Therefore, the floating displacement of the floating piston can provide feedback on the gas flow rate change in the dual-channel regulator.

[0010] Preferably, the circular plate has a protrusion, and the partition plate also has a sliding groove, with the protrusion engaging and sliding in the sliding groove.

[0011] Furthermore, the adaptive voltage regulation component includes a sliding regulator, the housing of which is fixedly connected to the partition plate, and the sliding part of which is fixedly connected to the protrusion.

[0012] By sliding the protrusion, the speed of the micro centrifugal pump can be adjusted by sliding the sliding regulator, thereby achieving the technical effect of automatically increasing the pressure difference when the drainage tube is blocked and automatically restoring the pressure difference after cleaning.

[0013] Furthermore, the adaptive pressure regulating component includes an regulating cylinder and a fixed valve seat, wherein the regulating cylinder is fixedly connected to the dual-channel regulator and the fixed valve seat is fixedly connected to the regulating cylinder.

[0014] Preferably, the adaptive pressure regulating assembly further includes an adjusting floating valve seat, a connecting rod, and a return spring. The connecting rod is fixed to the protrusion, the adjusting floating valve seat is fixed to the connecting rod, and one end of the return spring is disposed on the adjusting floating valve seat.

[0015] By coordinating the spacing between the fixed valve seat and the adjustable floating valve seat, the differential pressure can be automatically adjusted by changing the opening of the adjustable floating valve seat while keeping the speed of the micro centrifugal pump constant. This achieves the technical effect of automatically increasing the differential pressure when the drainage pipe is blocked and automatically restoring the differential pressure after cleaning.

[0016] Furthermore, the drainage filtration assembly includes a micro centrifugal pump and a filter element. The filter element is detachably disposed in the dual-channel regulator. The micro centrifugal pump is disposed at one end of the dual-channel regulator, and the other end of the reset spring is disposed on the filter element.

[0017] A micro centrifugal pump creates a pressure difference between the dual-channel regulator and the collection port, thereby enabling the flow of liquid; the filter cartridge filters the air discharged to the outside, isolating bacteria and viruses in the air.

[0018] Furthermore, the collection assembly includes a collection tank, a top cover, and a drainage tube. The top cover is detachably mounted on the collection tank, the drainage tube is located in the second connector of a three-way pipe, and the third connector of the three-way pipe passes through the top cover and is located in the collection tank.

[0019] The collection tank and the top cover form a closed chamber, which is connected to the outside only through a three-way pipe.

[0020] Furthermore, the baffle assembly includes a fan mounting plate and a tail baffle. The fan mounting plate is located at one end of the dual-channel regulator, the micro centrifugal pump is mounted on the dual-channel regulator via the fan mounting plate, the tail baffle is located at the other end of the dual-channel regulator, and the other end of the feedback spring is located on the tail baffle.

[0021] The beneficial effects achieved by the present invention using the above structure are as follows: (1) By changing the gas flow rate inside the dual-channel regulator, the blockage inside the drainage tube can be fed back, and when blockage occurs, the blockage can be cleared by increasing the pressure difference.

[0022] (2) When the airflow passes through the floating piston, it will also exert a thrust on the floating piston, and the magnitude of the thrust is positively correlated with the gas flow rate. Therefore, the floating displacement of the floating piston can provide feedback on the gas flow rate change in the dual-channel regulator.

[0023] (3) By sliding the protrusion, the speed of the micro centrifugal pump can be adjusted by sliding the sliding regulator, thereby achieving the technical effect of automatically increasing the pressure difference when the drainage tube is blocked and automatically restoring the pressure difference after cleaning.

[0024] (4) By coordinating the spacing between the fixed valve seat and the adjustable floating valve seat, the differential pressure can be automatically adjusted by changing the opening of the adjustable floating valve seat while the speed of the micro centrifugal pump remains constant. This achieves the technical effect of automatically increasing the differential pressure when the drainage pipe is blocked and automatically restoring the differential pressure after cleaning.

[0025] (5) A pressure difference can be created between the dual-channel regulator and the collection port through the micro centrifugal pump, thereby enabling the flow of liquid; the filter element can filter the air discharged to the outside, isolating bacteria and viruses in the air.

[0026] (6) The collection tank and the top cover form a closed chamber, which is connected to the outside only through a three-way pipe. Attached Figure Description

[0027] Figure 1 This is a perspective view of a portable negative pressure saliva collector proposed in this invention; Figure 2 This is a front view of a portable negative pressure saliva collector proposed in this invention; Figure 3 This is a left view of a portable negative pressure saliva collector proposed in this invention; Figure 4 This is a top view of a portable negative pressure saliva collector proposed in this invention; Figure 5 for Figure 2 Cross-sectional view along section line AA in Embodiment 1; Figure 6 for Figure 2 Cross-sectional view along section line AA in Example 2; Figure 7 for Figure 5 A cross-sectional view along the cutting line BB; Figure 8 for Figure 5 A magnified view of a section at point I; Figure 9 for Figure 5 Enlarged view of a section at point II; Figure 10 for Figure 6 Enlarged view of a section at point III; Figure 11 for Figure 7 A magnified view of a section at point IV.

[0028] Among them, 1. Dual-channel assembly, 2. Flow rate feedback assembly, 3. Drainage and filtration assembly, 4. Adaptive pressure regulation assembly, 5. Collection assembly, 6. Baffle assembly, 11. Dual-channel regulator, 12. T-connector, 13. Sealing plate, 21. Floating piston, 22. Floating bracket, 23. Feedback spring, 31. Miniature centrifugal pump, 32. Filter element, 41. Sliding regulator, 42. Adjusting cylinder, 43. Fixed valve seat, 44. Adjusting floating valve seat, 45. Connecting rod, 46. Reset spring, 51. Liquid collection tank, 52. Top cover, 53. Drainage pipe, 61. Fan mounting plate, 62. Tail baffle, 111. Partition, 112. Sliding groove, 113. Vent hole, 211. Flow mesh, 221. Circular plate, 222. Protrusion.

[0029] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] like Figures 1-11 As shown, the present invention proposes a portable negative pressure saliva collector, including a dual-channel component 1, a flow rate feedback component 2, a drainage and filtering component 3, an adaptive pressure regulating component 4, a collection component 5, and a baffle component 6. The dual-channel component 1 is disposed on the collection component 5, the flow rate feedback component 2 is slidably disposed in the dual-channel component 1, the drainage and filtering component 3 is disposed on the dual-channel component 1, the adaptive pressure regulating component 4 is disposed in the dual-channel component 1, and the baffle component 6 is disposed on the dual-channel component 1. The dual-channel assembly 1 includes a dual-channel regulator 11, a three-way pipe 12, and a sealing plate 13. The dual-channel regulator 11 is disposed on the collecting assembly 5, the sealing plate 13 is disposed at one end of the dual-channel regulator 11, the first connector of the three-way pipe 12 is disposed in the sealing plate 13, and one end of the three-way pipe 12 is located inside the dual-channel regulator 11.

[0033] The gas flow rate change inside the dual-channel regulator 11 can provide feedback on the blockage inside the drainage tube 53, and when a blockage occurs, the clearing speed of the blockage is accelerated by increasing the pressure difference.

[0034] The dual-channel regulator 11 is provided with a partition 111, and the partition 111 is provided with a vent 113.

[0035] The flow rate feedback assembly 2 includes a floating piston 21, a floating support 22, and a feedback spring 23. The floating piston 21 is slidably disposed in the dual-channel regulator 11. The floating piston 21 is provided with an array of flow mesh holes 211. The floating support 22 is fixedly connected to the floating piston 21. The floating support 22 is provided with a circular plate 221. One end of the feedback spring 23 is disposed on the circular plate 221.

[0036] When the airflow passes through the floating piston 21, it also applies a thrust to the floating piston 21, and the magnitude of the thrust is positively correlated with the gas flow rate. Therefore, the floating displacement of the floating piston 21 can provide feedback on the gas flow rate change in the dual-channel regulator 11.

[0037] The circular plate 221 is provided with a protrusion 222, and the partition plate 111 is also provided with a sliding groove 112. The protrusion 222 is engaged and slidably disposed in the sliding groove 112.

[0038] The adaptive voltage regulation component 4 includes a sliding regulator 41, the housing of which is fixed to the partition 111, and the sliding part of which is fixed to the protrusion 222.

[0039] By sliding the protrusion 222, the speed of the micro centrifugal pump 31 can be adjusted by sliding the sliding regulator 41, thereby achieving the technical effect of automatically increasing the pressure difference when the drainage pipe 53 is blocked and automatically restoring the pressure difference after cleaning.

[0040] The adaptive pressure regulating component 4 includes an regulating cylinder 42 and a fixed valve seat 43. The regulating cylinder 42 is fixedly connected to the dual-channel regulator 11, and the fixed valve seat 43 is fixedly connected to the regulating cylinder 42.

[0041] The adaptive pressure regulating assembly 4 also includes a floating valve seat 44, a connecting rod 45, and a return spring 46. The connecting rod 45 is fixed to the protrusion 222, the floating valve seat 44 is fixed to the connecting rod 45, and one end of the return spring 46 is located on the floating valve seat 44.

[0042] By coordinating the spacing between the fixed valve seat 43 and the adjustable floating valve seat 44, the differential pressure can be automatically adjusted by changing the opening of the adjustable floating valve seat 44 while keeping the speed of the micro centrifugal pump 31 constant. This achieves the technical effect of automatically increasing the differential pressure when the drainage pipe 53 is blocked and automatically restoring the differential pressure after cleaning.

[0043] The drainage filtration assembly 3 includes a micro centrifugal pump 31 and a filter element 32. The filter element 32 is detachably disposed in the dual-channel regulator 11. The micro centrifugal pump 31 is disposed at one end of the dual-channel regulator 11, and the other end of the reset spring 46 is disposed on the filter element 32.

[0044] The micro centrifugal pump 31 enables a pressure difference between the dual-channel regulator 11 and the collection port, thereby allowing the liquid to flow; the filter element 32 filters the air discharged to the outside, isolating bacteria and viruses in the air.

[0045] The collection assembly 5 includes a collection tank 51, a top cover 52, and a drainage tube 53. The top cover 52 is detachably mounted on the collection tank 51. The drainage tube 53 is located in the second connector of the three-way pipe 12. The third connector of the three-way pipe 12 passes through the top cover 52 and is located in the collection tank 51.

[0046] The liquid collection tank 51 and the top cover 52 form a closed chamber, which is connected to the outside only through the three-way pipe 12.

[0047] The baffle assembly 6 includes a fan mounting plate 61 and a tail baffle 62. The fan mounting plate 61 is located at one end of the dual-channel regulator 11. The micro centrifugal pump 31 is mounted on the dual-channel regulator 11 via the fan mounting plate 61. The tail baffle 62 is located at the other end of the dual-channel regulator 11. The other end of the feedback spring 23 is located on the tail baffle 62.

[0048] In practical use, the user first needs to install a suitable collection head at the end of the drainage tube 53, including but not limited to a duckbill-shaped silicone head that extends into the oral cavity; then start the micro centrifugal pump 31, and the gas in the drainage tube 53 and the dual-channel regulator 11 flows unidirectionally under the action of the micro centrifugal pump 31, thereby drawing the saliva and other mucus naturally secreted in the patient's oral cavity into the drainage tube 53. When the liquid reaches the tee pipe 12 along the drainage pipe 53, it will enter the collection tank 51 through the downward branch pipe of the tee pipe 12 under the action of gravity. The downward branch pipe of the tee pipe 12 can also be set at an angle along the direction of liquid flow to improve the controllability of the liquid flow path.

[0049] When the gas flows through the floating piston 21, it will impact the floating piston 21 and exert a thrust on the floating piston 21. Under normal working conditions, the liquid in the drainage tube 53 flows with the gas, and the thrust of the gas and the feedback spring 23 on the floating piston 21 is balanced. When there is a highly viscous liquid adhering to the wall of the drainage tube 53, the interception area of ​​the drainage tube 53 will decrease due to local blockage. Under the condition that the pressure difference between the two ends remains unchanged, the gas flow rate will also decrease (refer to the faucet valve). Whether it is to maintain the suction force or to clear the blockage area as soon as possible, the pressure difference between the two ends should be appropriately increased at this time.

[0050] As the first embodiment of the present invention, when the flow rate of gas in the drainage tube 53 decreases, the floating piston 21 will move laterally toward the three-way tube 12 by a certain amount under the elastic force of the feedback spring 23. At this time, the protrusion 222 slides with the sliding part of the sliding regulator 41, thereby increasing the speed of the micro centrifugal pump 31 and thus obtaining a greater pressure difference, which can maintain the attraction at the collection head and help to clear the blockage as soon as possible. Once the blockage is cleared, the gas flow rate increases, increasing the thrust on the floating piston 21. The floating piston 21 then overcomes the elastic force of the feedback spring 23 and slides until it returns to normal operation.

[0051] As a second embodiment of the present invention, the speed of the micro centrifugal pump 31 can be kept constant during operation. In the initial state, the fixed valve seat 43 and the adjustable floating valve seat 44 maintain a certain opening. When the drainage tube 53 is partially blocked, the sliding of the floating piston 21 will move the adjustable floating valve seat 44, thereby increasing the opening of the fixed valve seat 43 and the adjustable floating valve seat 44, and a larger pressure difference can also be obtained. Once the blockage is cleared, the gas flow rate increases, increasing the thrust on the floating piston 21. The floating piston 21 then overcomes the elastic force of the feedback spring 23 and slides until it returns to normal operation.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A portable negative pressure saliva collector, characterized in that: It includes a dual-channel component (1), a flow rate feedback component (2), a flow diversion and filtration component (3), an adaptive pressure regulation component (4), a collection component (5), and a baffle component (6). The dual-channel component (1) is disposed on the collection component (5), the flow rate feedback component (2) is slidably disposed in the dual-channel component (1), the flow diversion and filtration component (3) is disposed on the dual-channel component (1), the adaptive pressure regulation component (4) is disposed in the dual-channel component (1), and the baffle component (6) is disposed on the dual-channel component (1). The dual-channel assembly (1) includes a dual-channel regulator (11), a three-way pipe (12), and a sealing plate (13). The dual-channel regulator (11) is located on the collecting assembly (5). The sealing plate (13) is located at one end of the dual-channel regulator (11). The first connector of the three-way pipe (12) is located in the sealing plate (13). One end of the three-way pipe (12) is located inside the dual-channel regulator (11).

2. A portable negative pressure saliva collector according to claim 1, characterized in that: The dual-channel regulator (11) is provided with a partition (111), and the partition (111) is provided with a vent (113).

3. A portable negative pressure saliva collector according to claim 2, characterized in that: The flow rate feedback component (2) includes a floating piston (21), a floating bracket (22), and a feedback spring (23). The floating piston (21) is slidably disposed in the dual-channel regulator (11). The floating piston (21) is provided with an array of flow mesh holes (211). The floating bracket (22) is fixedly connected to the floating piston (21). The floating bracket (22) is provided with a circular plate (221). One end of the feedback spring (23) is disposed on the circular plate (221).

4. A portable negative pressure saliva collector according to claim 3, characterized in that: The circular plate (221) is provided with a protrusion (222), and the partition plate (111) is also provided with a sliding groove (112). The protrusion (222) is engaged and slidably disposed in the sliding groove (112).

5. A portable negative pressure saliva collector according to claim 4, characterized in that: The adaptive voltage regulation component (4) includes a sliding regulator (41), the outer shell of which is fixed to the partition plate (111), and the sliding part of which is fixed to the protrusion (222).

6. A portable negative pressure saliva collector according to claim 4, characterized in that: The adaptive pressure regulating component (4) includes an regulating cylinder (42) and a fixed valve seat (43). The regulating cylinder (42) is fixedly connected to the dual-channel regulator (11), and the fixed valve seat (43) is fixedly connected to the regulating cylinder (42).

7. A portable negative pressure saliva collector according to claim 6, characterized in that: The adaptive pressure regulating component (4) further includes a floating valve seat (44), a connecting rod (45), and a return spring (46). The connecting rod (45) is fixed to the protrusion (222), the floating valve seat (44) is fixed to the connecting rod (45), and one end of the return spring (46) is located on the floating valve seat (44).

8. A portable negative pressure saliva collector according to claim 7, characterized in that: The drainage filtration assembly (3) includes a micro centrifugal pump (31) and a filter element (32). The filter element (32) is detachably disposed in a dual-channel regulator (11). The micro centrifugal pump (31) is disposed at one end of the dual-channel regulator (11), and the other end of the reset spring (46) is disposed on the filter element (32).

9. A portable negative pressure saliva collector according to claim 8, characterized in that: The collection assembly (5) includes a collection tank (51), a top cover (52), and a drainage tube (53). The top cover (52) is detachably mounted on the collection tank (51). The drainage tube (53) is located in the second connector of a three-way pipe (12). The third connector of the three-way pipe (12) passes through the top cover (52) and is located in the collection tank (51).

10. A portable negative pressure saliva collector according to claim 9, characterized in that: The baffle assembly (6) includes a fan mounting plate (61) and a tail baffle (62). The fan mounting plate (61) is located at one end of the dual-channel regulator (11). The micro centrifugal pump (31) is mounted on the dual-channel regulator (11) via the fan mounting plate (61). The tail baffle (62) is located at the other end of the dual-channel regulator (11). The other end of the feedback spring (23) is located on the tail baffle (62).

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