Device for filtering and recovering digestive fluids

Abstract

The utility model relates to a kind of digestive juice filtration and recovery device;The digestive juice filtration and recovery device includes drainage tube, valve A and filter;The filter includes top cover, bottom cup and filter screen;Top cover top is equipped with the import with drainage tube intercommunication;Drainage tube is equipped with valve A;Bottom cup bottom is equipped with export;Filter screen is embedded in bottom cup top portion;The import position of top cover is installed with the duckbill valve A set to inside.This utility model's duckbill valve A only allows digestive juice to enter filter inside from drainage tube, does not allow the digestive juice in filter to reflux to drainage tube, effectively prevent retrograde infection caused by digestive juice reflux through drainage tube.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, and in particular to a digestive fluid filtration and recovery device. Background Technology

[0002] Digestive fluid filtration and recovery refers to the technique of filtering and diluting digestive fluids discharged during surgery before reinjecting them into the body. The purpose of digestive fluid filtration and recovery is to maintain electrolyte balance, reduce the need for intravenous fluid replacement, protect the body's physiological fluid circulation, and provide nutrients and endogenous flora. Common digestive fluid filtration and recovery devices currently include a bottle and a filter. The filter is located inside the bottle; digestive fluids enter the bottle from the top, are filtered, and then discharged from the bottom, ready for reinjection. The filter needs to be replaced periodically. To facilitate filter replacement, a patent with publication number CN213100993U describes a digestive fluid filtration and collection device that divides the bottle into a detachable top cover and a base; the filter is located on the upper part of the base; thus, opening the top cover allows for filter replacement. However, during filter replacement, if the valve on the drainage tube connected to the top cover is not closed, residual digestive fluid inside the top cover may flow back along the drainage tube due to tilting during filter replacement, causing retrograde infection. Existing technology does not offer a solution to this problem. Utility Model Content

[0003] The purpose of this invention is to solve the above-mentioned problems and provide a digestive fluid filtration and recovery device.

[0004] The technical solution of this utility model is as follows: a digestive fluid filtration and recovery device includes a drainage pipe, valve A, and a filter; the filter includes a top cover, a bottom cup, and a filter screen; the top cover has an inlet communicating with the drainage pipe; the drainage pipe is equipped with valve A; the bottom of the bottom cup has an outlet; the filter screen is embedded in the top of the bottom cup; the digestive fluid enters from the inlet and exits from the outlet, being filtered by the filter screen in between; an inwardly facing duckbill valve A is installed at the inlet position of the top cover; the duckbill valve A only allows the digestive fluid to enter the filter from the drainage pipe and does not allow the digestive fluid inside the filter to flow back into the drainage pipe, effectively preventing retrograde infection caused by the backflow of digestive fluid through the drainage pipe.

[0005] Preferably, the filter further includes an exhaust assembly; the exhaust assembly is installed on the top of the top cover and communicates with the interior of the filter; the exhaust assembly includes a tube connected to the top cover at one end and a filter element embedded inside the tube; the exhaust assembly is used to balance the air pressure inside and outside the filter and prevent external bacteria from entering the interior of the filter.

[0006] Furthermore, the top cover includes a threaded cover body and a ring body; the duckbill valve A and the pipe body are installed on the cover body; the lower end of the ring body is threadedly connected to the bottom cup; this facilitates the installation of the duckbill valve A and the exhaust assembly.

[0007] Furthermore, the lower end of the ring is provided with an external thread; the upper end of the bottom cup is provided with an internal thread and an inner step that mate with the external thread; the filter screen rests on the inner step; the lower end of the ring abuts against the edge of the filter screen; the lower end of the ring mates with the inner step to clamp the edge of the filter screen and ensure stable operation of the filter screen.

[0008] Furthermore, the filter screen includes a mesh body and an mounting ring; the mesh body is embedded in the mounting ring; the edge of the mounting ring has a groove that matches the lower end of the ring body; the lower end of the ring body rests against the groove; the installation of the filter screen is more stable.

[0009] Furthermore, the bottom of the bottom cup is conical; a radial partition plate A extends inward from the inner wall of the middle of the bottom cup; a downward-facing duckbill valve B is installed at the center of the radial partition plate A; the duckbill valve B ensures that the digestive fluid flows smoothly to the outlet and prevents the digestive fluid from flowing back to the top of the radial partition plate A; when the bottom cup is tilted, some of the residual digestive fluid can remain between the radial partition plate A and the outlet, reducing the overflow and waste of digestive fluid.

[0010] Furthermore, the radial partition plate A is conical; all the digestive fluid falling on the radial partition plate A is concentrated towards the duckbill valve B and flows downward from the duckbill valve B.

[0011] Furthermore, a radial partition plate B extends inward from the inner wall of the ring body; a downward-facing duckbill valve C is installed at the center of the radial partition plate B; the duckbill valve C ensures that the digestive fluid flows smoothly to the filter screen and prevents the digestive fluid from flowing back to the top of the radial partition plate B; when the top cover is tilted, some residual digestive fluid can remain between the radial partition plate B and the cover body, reducing the overflow and waste of digestive fluid.

[0012] Preferably, the end of the drainage tube is provided with a Luer connector to facilitate detachable connection with the top cover.

[0013] Preferably, valve A is a speed regulator, which can adjust the flow rate of digestive fluid in the drainage tube, or even block the drainage tube.

[0014] Preferably, the outlet is provided with a discharge pipe to discharge the digestive fluid inside the filter; the discharge pipe is provided with a valve B to control the opening and closing of the digestive fluid discharge.

[0015] The beneficial effects of this utility model are as follows: The digestive fluid filtration and recovery device of this utility model has the following advantages: (1) The duckbill valve of this utility model only allows digestive fluid to enter the filter from the drainage tube, and does not allow digestive fluid inside the filter to flow back into the drainage tube, effectively preventing retrograde infection caused by digestive fluid flowing back through the drainage tube; (2) The lower end of the ring body of this utility model is matched with the inner step to clamp the edge of the filter screen and ensure the stable operation of the filter screen. Attached Figure Description

[0016] Figure 1 This is a front view of the digestive fluid filtration and recovery device of this utility model; Figure 2 yes Figure 1 AA section view; Figure 3 yes Figure 2 A magnified view of the I-shaped image; Figure 4 yes Figure 1 BB section view; Figure 5 This is a perspective view of the digestive fluid filtration and recovery device of this utility model; In the diagram: 1. Drainage pipe, 11. Luer connector, 2. Speed ​​controller, 311. Inlet, 312. Duckbill valve A, 313. Cover, 314. Ring, 3141. External thread, 3142. Radial partition plate B, 3143. Duckbill valve C, 32. Bottom cup, 321. Outlet, 322. Internal thread, 323. Internal step, 324. Conical bottom, 325. Radial partition plate A, 326. Duckbill valve B, 327. Discharge pipe, 328. Valve B, 33. Filter screen, 331. Mesh body, 332. Mounting ring, 3321. Groove, 34. Exhaust assembly, 341. Pipe body, 342. Filter element. Detailed Implementation

[0017] Example 1: See Figure 1-5 A digestive fluid filtration and recovery device includes a drainage pipe 1, a valve A, and a filter. The filter includes a top cover, a bottom cup 32, and a filter screen 33. The top cover has an inlet 311 communicating with the drainage pipe 1. The drainage pipe 1 is equipped with a valve A. The bottom cup 32 has an outlet 321 at its bottom. The filter screen 33 is embedded in the top of the bottom cup 32. The digestive fluid enters from the inlet 311 and exits from the outlet 321, being filtered by the filter screen 33 in between. An inwardly facing duckbill valve A 312 is installed at the inlet 311 of the top cover. The duckbill valve A 312 only allows the digestive fluid to enter the filter from the drainage pipe 1 and does not allow the digestive fluid inside the filter to flow back into the drainage pipe 1, effectively preventing retrograde infection caused by the backflow of digestive fluid through the drainage pipe 1.

[0018] Compared with the prior art, the duckbill valve A312 of this utility model only allows digestive fluid to enter the filter from the drainage tube 1, and does not allow digestive fluid inside the filter to flow back into the drainage tube 1, effectively preventing retrograde infection caused by digestive fluid flowing back through the drainage tube 1.

[0019] The filter also includes an exhaust assembly 34; the exhaust assembly 34 is installed on the top of the top cover and communicates with the interior of the filter; the exhaust assembly 34 includes a tube 341 connected to the top cover at one end and a filter element 342 embedded inside the tube 341; the exhaust assembly 34 is used to balance the air pressure inside and outside the filter and prevent external bacteria from entering the interior of the filter.

[0020] The top cover includes a cover body 313 and a ring body 314 with threaded connection; a duckbill valve A 312 and a pipe body 341 are installed on the cover body 313; the lower end of the ring body 314 is threadedly connected to the bottom cup 32; this facilitates the installation of the duckbill valve A 312 and the exhaust assembly 34.

[0021] The lower end of the ring 314 is provided with an external thread 3141; the upper end of the bottom cup 32 is provided with an internal thread 322 and an inner step 323 that mate with the external thread 3141; the filter screen 33 rests on the inner step 323; the lower end of the ring 314 abuts against the edge of the filter screen 33; the lower end of the ring 314 mates with the inner step 323 to clamp the edge of the filter screen 33 and ensure that the filter screen 33 works stably.

[0022] The filter screen 33 includes a mesh body 331 and a mounting ring 332; the mesh body 331 is embedded in the mounting ring 332; the edge of the mounting ring 332 is provided with a groove 3321 that matches the lower end of the ring body 314; the lower end of the ring body 314 rests in the groove 3321; the installation of the filter screen 33 is more stable.

[0023] The bottom of the bottom cup 32 is a conical bottom 324; a radial partition plate A 325 extends inward from the inner wall of the middle part of the bottom cup 32; a downward-facing duckbill valve B 326 is installed in the center of the radial partition plate A 325; the duckbill valve B 326 ensures that the digestive fluid flows smoothly to the outlet 321 and prevents the digestive fluid from flowing back to the top of the radial partition plate A 325; when the bottom cup 32 is tilted, some residual digestive fluid can remain between the radial partition plate A 325 and the outlet 321, reducing the overflow and waste of digestive fluid.

[0024] The radial partition plate A 325 is conical; all the digestive fluid falling on the radial partition plate A 325 is concentrated in the duckbill valve B 326 and flows downward from the duckbill valve B 326.

[0025] A radial partition plate B 3142 extends inward from the inner wall of the middle part of the ring body 314; a downward-facing duckbill valve C 3143 is installed at the center of the radial partition plate B 3142; the duckbill valve C 3143 ensures that the digestive fluid flows smoothly to the filter screen 33 and prevents the digestive fluid from flowing back to the top of the radial partition plate B 3142; when the top cover is tilted, some residual digestive fluid can remain between the radial partition plate B 3142 and the cover body 313, reducing the overflow and waste of digestive fluid.

[0026] The radial partition plate B 3142 is a cone shape; all the digestive fluid falling on the radial partition plate B 3142 is concentrated into the duckbill valve C 3143 and flows downward from the duckbill valve C 3143.

[0027] The outlet 321 is provided with a discharge pipe 327 to discharge the digested liquid inside the filter; the discharge pipe 327 is provided with a valve 328 to control the opening and closing of the discharge of the digested liquid.

[0028] The working principle of this embodiment is as follows: Digestive fluid enters from inlet 311 and exits from outlet 321, being filtered by filter screen 33 in between. The duckbill valve 312 only allows digestive fluid to enter the filter from the drainage pipe 1, preventing digestive fluid inside the filter from flowing back into the drainage pipe 1, effectively preventing retrograde infection caused by backflow of digestive fluid through the drainage pipe 1. The exhaust assembly 34 is used to balance the air pressure inside and outside the filter and prevent external bacteria from entering the filter. The lower end of the ring 314 cooperates with the inner step 323 to clamp the edge of the filter screen 33, ensuring stable operation of the filter screen 33. The mesh body 331 is embedded in the mounting ring 332; the edge of the mounting ring 332 has a groove 3321 that matches the lower end of the ring body 314; the lower end of the ring body 314 abuts against the groove 3321; the installation of the filter screen 33 is more stable. Duckbill valve B 326 ensures the digestive fluid flows smoothly to outlet 321, preventing it from flowing back above radial partition plate A 325. When the bottom cup 32 is tilted, some residual digestive fluid can remain between radial partition plate A 325 and outlet 321, reducing waste. Duckbill valve C 3143 ensures the digestive fluid flows smoothly to filter screen 33, preventing it from flowing back above radial partition plate B 3142. When the top cover is tilted, some residual digestive fluid can remain between radial partition plate B 3142 and cover 313, reducing waste. Discharge pipe 327 discharges the digestive fluid from inside the filter; valve B 328 controls the on / off state of digestive fluid discharge.

[0029] Example 2: Example 2 is basically the same as Example 1, and the similarities will not be repeated. The difference is that valve A is a speed regulator 2, which can adjust the flow rate of digestive fluid in the drainage tube 1, and even block the drainage tube 1.

[0030] The end of the drainage tube 1 is provided with a Luer connector 11 for easy detachable connection with the top cover.

Claims

1. A digestive fluid filtration and recovery device, comprising a drainage pipe, a valve A, and a filter; the filter comprising a top cover, a bottom cup, and a filter screen; the top cover having an inlet communicating with the drainage pipe; the drainage pipe having a valve A; the bottom cup having an outlet; and the filter screen being embedded in the top of the bottom cup; characterized in that, An inward-facing duckbill valve is installed at the inlet position of the top cover.

2. The digestive fluid filtration and recovery device according to claim 1, characterized in that: The filter also includes an exhaust assembly; the exhaust assembly is installed on top of the top cover and communicates with the interior of the filter; the exhaust assembly includes a tube connected to the top cover at one end and a filter element embedded inside the tube.

3. The digestive fluid filtration and recovery device according to claim 2, characterized in that: The top cover includes a threaded cover body and a ring body; the duckbill valve A and the pipe body are installed on the cover body; the lower end of the ring body is threadedly connected to the bottom cup.

4. The digestive fluid filtration and recovery device according to claim 3, characterized in that: The lower end of the ring is provided with an external thread; the upper end of the bottom cup is provided with an internal thread and an inner step that mate with the external thread; the filter screen rests on the inner step; the lower end of the ring abuts against the edge of the filter screen.

5. The digestive fluid filtration and recovery device according to claim 4, characterized in that: The filter screen includes a screen body and a mounting ring; the screen body is embedded in the mounting ring; the edge of the mounting ring has a groove that matches the lower end of the ring body; the lower end of the ring body rests against the groove.

6. The digestive fluid filtration and recovery device according to claim 3, characterized in that: The bottom of the cup is conical; a radial partition plate A extends inward from the inner wall of the middle of the cup; a downward-facing duckbill valve B is installed at the center of the radial partition plate A.

7. The digestive fluid filtration and recovery device according to claim 6, characterized in that: A radial partition plate B extends inward from the inner wall of the middle part of the ring; a downward-facing duckbill valve C is installed at the center of the radial partition plate B.

8. The digestive fluid filtration and recovery device according to claim 1, characterized in that: The end of the drainage tube is equipped with a Luer connector.

9. The digestive fluid filtration and recovery device according to claim 1, characterized in that: Valve A is a speed controller.

10. The digestive fluid filtration and recovery device according to claim 1, characterized in that: The outlet is equipped with a discharge pipe; valve B is installed on the discharge pipe.

Images