Drainage bag with automatic control of opening and closing of drainage tube

Abstract

The invention discloses a drainage bag for automatically controlling the opening and closing of a drainage tube, comprising a first drainage bag, a second drainage bag and a three-way hose, wherein the first drainage bag and the second drainage bag both comprise an inner bag and an outer bag, wherein the outer bag is sleeved on the outer side of the inner bag and a thin-film pressure sensor is arranged between the outer bag and the inner bag; a first liquid outlet pipe and a second liquid outlet pipe of the three-way hose are respectively connected to the inlet ends of the two inner bags; an automatic pipeline switching device for switching the on-off state of the first liquid outlet pipe and the second liquid outlet pipe is arranged between the first liquid outlet pipe and the second liquid outlet pipe, and the automatic pipeline switching device is connected to the thin-film pressure sensor; the invention has the function of automatically switching the on-off state of the drainage tube according to the amount of liquid in the drainage bag, and has the beneficial effects of automatically switching the drainage bag and continuous drainage.

Description

Technical Field

[0001] The invention belongs to the technical field of medical accessories, and in particular relates to a drainage bag capable of automatically controlling the opening and closing of a drainage tube. Background Art

[0002] Drainage bags are one of the commonly used medical care tools in the medical field for smoothly diverting tissue fluid, urine, effusion and other liquids in the patient's body to the outside of the patient. Existing drainage bags will be equipped with a manual drainage tube closing device at the inlet of the drainage bag, and the drainage tube will be opened or closed by manual operation. However, in the actual use of the drainage bag, manually opening or closing the drainage tube is not only inconvenient to operate, but also at night or when medical staff neglect supervision, it is often impossible to continue drainage after the drainage bag is full, which is extremely unfavorable for the patient's recovery. Some existing drainage bags will directly set a pressure sensor or a liquid level sensor inside the drainage bag to monitor the amount of liquid stored in the drainage bag, but the liquid in the drainage bag is usually human body discharge such as tissue fluid and urine, which will contaminate the drainage bag, that is, the drainage bag is a disposable appliance. Setting a pressure sensor or a liquid level sensor inside a disposable drainage bag not only makes it difficult to replace the pressure sensor or liquid level sensor inside the drainage bag when replacing the drainage bag, but also the liquid inside the drainage bag will contaminate the pressure sensor or liquid level sensor.

[0003] Therefore, in view of the defects of traditional drainage bags that the on / off state of the drainage tube cannot be automatically controlled and the liquid volume monitoring device inside the drainage bag is difficult to replace, the present invention discloses a drainage bag that automatically controls the opening and closing of the drainage tube. Summary of the invention

[0004] The purpose of the present invention is to provide a drainage bag that automatically controls the opening and closing of the drainage tube, automatically switching the on and off state of the first liquid outlet tube or the second liquid outlet tube according to the amount of liquid in the drainage bag, effectively avoiding the problem of overflowing liquid inside the drainage bag and being unable to continue drainage, without the need for manual real-time monitoring, which is convenient and labor-saving.

[0005] The present invention is achieved through the following technical solutions:

[0006] A drainage bag that automatically controls the opening and closing of a drainage tube, comprising a first drainage bag, a second drainage bag, and a three-way hose, characterized in that the first drainage bag and the second drainage bag both comprise an inner bag and an outer bag, the outer bag is mounted on the outside of the inner bag, and a thin film pressure sensor is arranged between the outer bag and the inner bag; the first liquid outlet pipe and the second liquid outlet pipe of the three-way hose are respectively connected to the inlet ends of the two inner bags; an automatic pipeline switching device for switching the on and off states of the first liquid outlet pipe and the second liquid outlet pipe is arranged between the first liquid outlet pipe and the second liquid outlet pipe, and the automatic pipeline switching device is connected to the thin film pressure sensor.

[0007] The inlet end of the three-way hose is connected to the outlet end of the drainage tube through a quick-plug connector. The first outlet tube of the three-way hose is arranged corresponding to the inlet end of the inner bag of the first drainage bag, and the second outlet tube of the three-way hose is arranged corresponding to the inlet end of the inner bag of the second drainage bag. When the drainage bag is not in use, the automatic pipeline switching device clamps and closes both the first outlet tube and the second outlet tube, that is, at this time, the first outlet tube is not connected to the inner bag of the first drainage bag, and the second outlet tube is not connected to the inner bag of the second drainage bag. When the drainage bag needs to be used, the automatic pipeline switching device opens the first outlet tube, while the second outlet tube is still in a closed state. At this time, the accumulated fluid in the patient's body can enter the inner bag of the first drainage bag through the first outlet tube for storage. As the liquid in the inner bag gradually increases, the inner bag expands and squeezes the thin-film pressure sensor between it and the outer bag. When the liquid in the inner bag is stored to a certain volume, the pressure on the thin-sheet pressure sensor after the inner bag expands exceeds the preset threshold value. At this time, the thin-sheet pressure sensor sends a signal to the automatic pipeline switching device, and the automatic pipeline switching device closes the first liquid outlet pipe and opens the second liquid outlet pipe. At this time, the accumulated fluid in the patient's body enters the inner bag of the second drainage bag through the second liquid outlet pipe and cannot enter the first drainage bag, avoiding excessive liquid in the first drainage bag. The second drainage bag is used as a backup drainage bag for subsequent drainage after the first drainage bag is full.

[0008] In order to better realize the present invention, further, the automatic pipeline switching device includes a fixed shell, a tube clamp plate, a tube clamp driving device, and a control single chip microcomputer. The fixed shell is respectively provided with tube through holes for the first liquid outlet pipe and the second liquid outlet pipe to pass through. The interior of the shell is provided with a tube clamp plate that is slidably arranged in a direction perpendicular to the axis of the first liquid outlet pipe and the second liquid outlet pipe. One side of the tube clamp plate is provided with a tube clamp driving device that drives the tube clamp plate to slide back and forth and is connected to the control single chip microcomputer. The control single chip microcomputer is also connected to the thin film pressure sensor; the tube clamp plate is respectively provided with a first clamping groove and a second clamping groove for the first liquid outlet pipe and the second liquid outlet pipe to pass through, the width of the first clamping groove gradually increases along the sliding direction from less than the diameter of the first liquid outlet pipe to greater than the diameter of the first liquid outlet pipe, the width of the second clamping groove is less than the diameter of the second liquid outlet pipe, and an avoidance opening greater than the diameter of the second liquid outlet pipe is provided at one end of the second clamping groove.

[0009] The top of the fixed shell is provided with through-tube holes penetrating the bottom of the fixed shell corresponding to the first liquid outlet pipe and the second liquid outlet pipe respectively, and the first liquid outlet pipe and the second liquid outlet pipe are inserted into the fixed shell through the through-tube holes, and at the same time, the first liquid outlet pipe passes through the first clamping groove and extends from the through-tube hole at the bottom of the fixed shell to the outside of the fixed shell, and the second liquid outlet pipe passes through the second clamping groove and extends from the through-tube hole at the bottom of the fixed shell to the outside of the fixed shell. When the drainage bag is not in use, the first liquid outlet pipe is located in the first clamping groove at a position where the width is smaller than the diameter of the first liquid outlet pipe, that is, the first clamping groove clamps the first liquid outlet pipe at this time so that the first liquid outlet pipe is in a closed state; at the same time, the second liquid outlet pipe is located in the second clamping groove at a position where the width is smaller than the diameter of the second liquid outlet pipe, that is, the second clamping groove clamps the second liquid outlet pipe at this time so that the second liquid outlet pipe is in a closed state.

[0010] When the drainage bag is needed, the tube clamp driving device drives the tube clamp plate to slide, thereby driving the first clamping groove and the first liquid outlet tube to move relative to each other, and also driving the second clamping groove and the second liquid outlet tube to move relative to each other. Then, the first clamping groove moves relative to the first liquid outlet tube to a position where the width is greater than the diameter of the first liquid outlet tube, at which time the first clamping groove no longer clamps the first liquid outlet tube, so that the first liquid outlet tube is opened; at the same time, although the second clamping groove moves relative to the second liquid outlet tube, the second liquid outlet tube is still in a position where the width of the second clamping groove is less than the diameter of the second liquid outlet tube, that is, when the first liquid outlet tube is opened, the second liquid outlet tube is still in a closed state, so that only the first liquid outlet tube is opened for drainage.

[0011] After the first drainage bag is full, a signal is fed back to the tube clamp driving device through the thin film pressure sensor. At this time, the tube clamp driving device drives the tube clamp plate to slide, so that the first clamping groove moves relative to the first liquid outlet tube to a position where the width is smaller than the diameter of the first liquid outlet tube. At this time, the first liquid outlet tube is clamped and closed by the first clamping groove; at the same time, the second clamping groove moves relative to the second liquid outlet tube to a position where the width is larger than the second liquid outlet tube. At this time, the second clamping groove no longer clamps the second liquid outlet tube, so that the second liquid outlet tube is opened to realize the switching of the on-off state between the first liquid outlet tube and the second liquid outlet tube.

[0012] It should be further explained that when the first clamping groove moves relative to the first liquid outlet pipe and the second clamping groove moves relative to the second liquid outlet pipe, the through-tube through-hole on the fixed housing will limit the first liquid outlet pipe and the second liquid outlet pipe to prevent the first liquid outlet pipe from moving with the first clamping groove and the second liquid outlet pipe from moving with the second clamping groove. That is, the through-tube through-holes on the upper and lower sides of the fixed housing respectively limit the upper and lower ends of the first liquid outlet pipe and the upper and lower ends of the second liquid outlet pipe, so that the first liquid outlet pipe is first fixed at the bottom of the first clamping groove, and the second liquid outlet pipe is fixed relative to the second clamping groove.

[0013] The above-mentioned thin-film pressure sensor has been disclosed in the patent with patent number "CN201612031509.3" and name "Thin-film pressure sensor". At the same time, the circuit connecting the thin-film pressure sensor with the automatic pipeline switching device is a prior art that is well known and can be implemented by technical personnel in this field, so it will not be repeated here.

[0014] In order to better realize the present invention, further, the tube clamp driving device includes a micro-drive motor, a screw, a nut seat, a first bevel gear, and a second bevel gear. The screw is rotatably arranged below the tube clamping plate, and a nut seat screwed on the screw is arranged at the bottom of the tube clamping plate; one end of the screw is sleeved with a first bevel gear, the first bevel gear is meshed with the second bevel gear, and the second bevel gear is sleeved on the output shaft of the micro-drive motor, and the micro-drive motor is also connected to the control single-chip computer.

[0015] The sheet pressure sensor feeds back a signal to the control microcontroller, which in turn controls the micro drive motor to start. The output shaft of the micro drive motor drives the second bevel gear to rotate, and the second bevel gear in turn drives the first bevel gear to rotate electrically, and then the electric screw rotates, and the screw in turn drives the nut seat and the clamping plate to move linearly along the interior of the fixed shell.

[0016] The above-mentioned micro drive motor is an existing product with model number "60BLD030-12-30B", and its structure, usage and wiring method will not be described in detail here; the above-mentioned control microcontroller is an existing product with model number "STM32F429IGT6", and its structure, usage and wiring method will not be described in detail here.

[0017] In order to better realize the present invention, further, it also includes a battery, the battery is connected to the control single chip computer and the micro drive motor respectively, and the fixed shell is also provided with an electrical socket connected to the battery.

[0018] The above-mentioned storage battery is an existing product with the model number of "TP12-7", and its structure, usage and wiring method are not described in detail here.

[0019] In order to better implement the present invention, further, pipe sleeves for fixing the first liquid outlet pipe and the second liquid outlet pipe are provided at the openings at both ends of the pipe through hole of the fixed shell, and a fixing component is also provided on one side of the fixed shell.

[0020] The first liquid outlet pipe and the second liquid outlet pipe pass through the pipe sleeve and enter the interior of the fixed shell. At the same time, the pipe sleeve guides the first liquid outlet pipe and the second liquid outlet pipe to insert into the fixed shell, and at the same time, the pipe sleeve limits the first liquid outlet pipe and the second liquid outlet pipe; the fixed component is used to install the fixed shell on one side of the bed.

[0021] In order to better realize the present invention, further, the fixing component includes a fixed card, a movable card, and an adjusting screw. The fixed card is arranged on one side of the outside of the fixed shell, and a movable card is arranged on the fixed card for sliding in the vertical direction. An adjusting screw for tightening the movable card is arranged on the side of the movable card away from the fixed card.

[0022] In order to better implement the present invention, further, an audible and visual alarm is arranged inside the fixed housing, and the audible and visual alarm is connected to the control single chip microcomputer.

[0023] The above-mentioned sound and light alarm is an existing product with the model number "MEB-ASM", and its structure, usage and wiring method will not be described in detail here.

[0024] In order to better realize the present invention, further, an opening for loading the inner bag is provided at one end of the outer bag, a mother card strip is provided on the inner side of the opening of the outer bag, and a child card strip tightly engaged with the mother card strip is provided on the outer side of the top of the inner bag; an exhaust port is provided at the bottom of the outer bag, and a drainage pipe that passes through the outer bag and extends outward is provided at the bottom of the inner bag.

[0025] Both the inner bag and the outer bag are made of flexible plastic material, and the top of the outer bag is opened for the inner bag to be loaded. After the inner bag is loaded into the outer bag, the drainage pipe at the bottom of the inner bag extends to the outside of the outer bag through the through hole at the bottom of the outer bag, and at the same time, the sub-clip strip on the outside of the top of the inner bag is engaged with the mother-clip strip on the inside of the top of the outer bag, thereby fixing the inner bag inside the outer bag. Then, the exhaust port on the outer bag is opened and the inner bag and the outer bag are squeezed, so that the air between the inner bag and the outer bag is discharged through the exhaust port, so that the outer side of the inner bag is close to the inner side of the outer bag, so that the thin sheet pressure sensor between the inner bag and the outer bag can be smoothly squeezed after the inner bag is drained and expanded.

[0026] It should be further explained that the purpose of providing the exhaust port on the outer bag is to exhaust the air between the outer bag and the inner bag as much as possible so that the outer side of the inner bag fits the inner side of the outer bag as closely as possible, and it is not to keep the inner bag and the outer bag in a sealed state.

[0027] In order to better implement the present invention, further, the first liquid outlet tube is provided with a one-way valve inclined toward the first drainage bag, and the second liquid outlet tube is provided with a one-way valve inclined toward the second drainage bag.

[0028] In order to better implement the present invention, further, both the first drainage bag and the second drainage bag are provided with scale lines.

[0029] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0030] (1) The present invention provides a three-way hose, and connects the first liquid outlet pipe of the three-way hose to the first drainage bag, and connects the second liquid outlet pipe of the three-way hose to the second drainage bag. At the same time, a thin-film pressure sensor is provided to monitor the liquid volume in the first drainage bag, and the liquid volume is fed back to the automatic pipeline switching device. After the first drainage bag is full, the automatic pipeline switching device controls the first liquid outlet pipe to close and the second liquid outlet pipe to open, thereby realizing continuous drainage to the second drainage bag;

[0031] (2) The present invention sets the first drainage bag as a structure of an inner bag and an outer bag, and sets a thin sheet pressure sensor between the inner bag and the outer bag. The thin sheet pressure sensor is squeezed by the inner bag after the liquid is stored and expanded, and then a signal is fed back to the automatic pipeline switching device, and the on-off state of the first liquid outlet pipe and the second liquid outlet pipe is controlled by the automatic pipeline switching device. After the inner bag is used, the inner bag can be easily taken out of the outer bag, which effectively avoids contamination of the thin sheet pressure sensor, and the outer bag can be used multiple times.

[0032] (3) The present invention provides an audible and visual alarm connected to the control single chip microcomputer on the fixed housing. When the control single chip microcomputer receives a signal from the sheet sensor, the control single chip microcomputer simultaneously controls the audible and visual alarm to give an audible and visual warning, prompting medical staff to replace the drainage bag in time.

[0033] (4) The present invention provides a first drainage bag and a second drainage bag. Even after the first drainage bag is filled with liquid, the first drainage bag can still be switched off and the second drainage bag can be switched on through the automatic pipeline switching device, thereby achieving continued drainage. At the same time, it also provides sufficient buffer time for medical staff to replace the drainage bag in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 It is a structural schematic diagram of the automatic pipeline switching device;

[0036] Figure 3 It is a schematic diagram of a state in which the first liquid outlet pipe and the second liquid outlet pipe are both closed;

[0037] Figure 4 A schematic diagram showing a state in which the first liquid outlet pipe is closed and the second liquid outlet pipe is opened;

[0038] Figure 5 A schematic diagram showing a state in which the first liquid outlet pipe is open and the second liquid outlet pipe is closed;

[0039] Figure 6 It is a schematic diagram of the structure of the fixed component;

[0040] Figure 7 It is a schematic diagram of the set of inner bag and outer bag;

[0041] Figure 8 Schematic diagram of the structure of a one-way valve.

[0042] Among them: 1-first drainage bag; 2-second drainage bag; 3-three-way hose; 4-thin sheet pressure sensor; 5-quick plug connector; 6-automatic pipeline switching device; 11-inner bag; 12-outer bag; 000-drainage hose; 001-first liquid outlet pipe; 002-second liquid outlet pipe; 003-three-way head; 61-fixed shell; 62-tube clamp plate; 63-tube clamp drive device; 66-control single-chip microcomputer; 67-battery; 631-micro drive motor; 632-screw; 633-nut seat; 634-first bevel gear; 635-second bevel gear; 111-fixed card; 222-movable card; 333-adjusting screw; 98-mother card strip; 99-child card strip. DETAILED DESCRIPTION

[0043] Embodiment 1:

[0044] A drainage bag of this embodiment that automatically controls the opening and closing of the drainage tube, such as Figure 1 and Figure 7 As shown, it includes a first drainage bag 1, a second drainage bag 2, and a three-way hose 3, and is characterized in that the first drainage bag 1 and the second drainage bag 2 both include an inner bag 11 and an outer bag 12, the outer bag 12 is mounted on the outside of the inner bag 11, and a thin film pressure sensor 4 is arranged between the outer bag 12 and the inner bag 11; the first liquid outlet pipe and the second liquid outlet pipe of the three-way hose 3 are respectively connected to the inlet ends of the two inner bags 11; an automatic pipeline switching device 6 for switching the on and off states of the first liquid outlet pipe and the second liquid outlet pipe is arranged between the first liquid outlet pipe and the second liquid outlet pipe, and the automatic pipeline switching device 6 is connected to the thin film pressure sensor 4.

[0045] The three-way hose 3 includes a drainage hose 000, a first liquid outlet pipe 001, a second liquid outlet pipe 002, and a three-way head 003. A three-way pipeline is arranged inside the three-way head 003. The inlet end of the drainage hose 000 is connected to the outlet end of the overflow pipe extending from the patient's body through a quick-plug connector 5, and the outlet end of the drainage hose 000 is connected to an opening of the three-way pipeline inside the three-way head 003. The other two openings of the three-way pipeline are respectively connected to the inlet end of the first liquid outlet pipe 001 and the inlet end of the second liquid outlet pipe 002 through quick-plug connectors.

[0046] The first drainage bag 1 and the second drainage bag 2 both include an inner bag 11 and an outer bag 12 sleeved on the outer side of the inner bag 11. The top of the inner bag 11 is provided with an inlet connected to the outlet end of the first liquid outlet pipe 001 or the second liquid outlet pipe 002, and the top of the outer bag 12 is provided with an opening for loading the inner bag 11. The inner bag 11 and the outer bag 12 are both made of flexible plastic material, and a thin sheet pressure sensor 4 is provided between the inner bag 11 and the outer bag 12. When the inner bag 11 expands due to drainage, the thin sheet pressure sensor 4 is squeezed, and the thin sheet pressure sensor 4 feeds back a signal to the automatic pipeline switching device 6, and the automatic pipeline switching device 6 controls the opening and closing of the first liquid outlet pipe 001 and the second liquid outlet pipe 002.

[0047] The specific usage is that when the drainage bag is not in use, the automatic pipeline switching device 6 clamps the first liquid outlet tube 001 and the second liquid outlet tube 002, so that the first liquid outlet tube 001 and the second liquid outlet tube 002 are both in a closed state and cannot drain. When the drainage bag is in use, the automatic pipeline switching device 6 opens the first liquid outlet tube 001, while the second liquid outlet tube 002 is still in a closed state, and the accumulated fluid in the patient's body can enter the inner bag 11 through the drainage hose 000 and the first liquid outlet tube 001. When the liquid in the inner bag 11 reaches a certain volume, the inner bag 11 expands and squeezes the thin-film pressure sensor 4. When the liquid in the inner bag 11 reaches a certain capacity, the pressure of the inner bag 11 on the thin-film pressure sensor 4 exceeds a preset threshold value. At this time, the thin-film pressure sensor 4 sends a signal to the automatic pipeline switching device 6. The automatic pipeline switching device 6 closes the first liquid outlet pipe 001 and opens the second liquid outlet pipe 002 at the same time. At this time, the accumulated fluid in the patient's body can enter the second drainage bag 2 through the drainage hose 000 and the second liquid outlet pipe 002, thereby avoiding reflux caused by excessive liquid in the first drainage bag 1.

[0048] Embodiment 2:

[0049] This embodiment is further optimized on the basis of the embodiment 1, the second drainage bag 2 also includes an inner bag 11 and an outer bag 12 mounted on the outer side of the inner bag 11, the top opening of the inner bag 11 is connected to the outlet end of the second liquid outlet pipe 2, and a thin film pressure sensor 4 is arranged between the inner bag 11 and the outer bag 12. When the first liquid outlet pipe 001 is closed and the second liquid outlet pipe 002 is opened, the accumulated fluid in the patient's body enters the inner bag 11 of the second drainage bag 2 and expands until the inner bag 11 expands to a certain extent and squeezes the thin film pressure sensor 4, at which time the thin film pressure sensor 4 feeds back a signal to the automatic pipeline switching device 6, and at this time the automatic pipeline switching device 6 closes the first liquid outlet pipe 001 and the second liquid outlet pipe 002 at the same time.

[0050] The other parts of this embodiment are the same as those of Embodiment 1, and thus will not be described in detail.

[0051] Embodiment 3:

[0052] This embodiment is further optimized on the basis of the above embodiment 1 or 2. Figure 2 As shown, the automatic pipeline switching device 6 includes a fixed shell 61, a tube clamping plate 62, a tube clamp driving device 63, and a control single chip computer 66. The shell 61 is respectively provided with tube through holes for the first liquid outlet pipe 001 and the second liquid outlet pipe 002 to pass through. The inside of the shell 61 is provided with a tube clamping plate 62 that is slidable along a direction perpendicular to the axis of the first liquid outlet pipe 001 and the second liquid outlet pipe 002. One side of the tube clamping plate 62 is provided with a tube clamp driving device 63 that drives the tube clamping plate 62 to slide back and forth and is connected to the control single chip computer 66. The control single chip computer 66 is also connected to the thin film pressure sensor 4; the first clamping groove 01 and the second clamping groove 02 for the first liquid outlet pipe 001 and the second liquid outlet pipe 002 to pass through are respectively provided on the clamping plate 62, and the width of the first clamping groove 01 gradually increases along the sliding direction from less than the diameter of the first liquid outlet pipe 001 to greater than the diameter of the first liquid outlet pipe 001, and the width of the second clamping groove 02 is less than the diameter of the second liquid outlet pipe 002, and an avoidance opening larger than the diameter of the second liquid outlet pipe 002 is provided at one end of the second clamping groove 02.

[0053] Sliding waist-shaped grooves are provided on opposite sides of the interior of the fixed shell 61 along the length direction, and the two sides of the clamping plate 62 are respectively slidably mounted in the sliding waist-shaped grooves on both sides of the fixed shell 61, so that the clamping plate 62 slides along the sliding waist-shaped grooves.

[0054] A first clamping groove 01 and a second clamping groove 02 are arranged on both sides of the clamping plate 62 in parallel and aligned along the sliding direction. The first clamping groove 01 allows the first liquid outlet pipe 001 to pass through, and the second clamping groove 02 allows the second liquid outlet pipe 002 to pass through.

[0055] For the convenience of explanation, the left ends of the first clamping groove 01 and the second clamping groove 02 are taken as the starting end, and the right ends of the first clamping groove 01 and the second clamping groove 02 are taken as the terminal end. The width of the left end of the first clamping groove 01 is greater than the diameter of the first liquid outlet pipe 001, the left end of the second clamping groove 02 is aligned with the left end of the first clamping groove 01, and the width of the left end of the second clamping groove 02 is less than the diameter of the second liquid outlet pipe 002. The groove width from the left end to the midpoint of the first clamping groove 01 gradually decreases to be equal to the diameter of the first liquid outlet pipe 001, and the groove width from the midpoint to the right end of the first clamping groove 01 is less than the diameter of the first liquid outlet pipe 001; the groove width of the right end of the second clamping groove 02 is greater than the diameter of the second liquid outlet pipe 002, and the diameter from the left end to the right end of the second clamping groove 02 is consistently kept smaller than the diameter of the second liquid outlet pipe 002.

[0056] like Figure 3As shown, corresponding to the state where both the first liquid outlet pipe 001 and the second liquid outlet pipe 002 are closed, at this time, the clamping plate 62 slides under the drive of the tube clamp driving device 63, so that the first clamping groove 01 slides relative to the first liquid outlet pipe 001 to a position where the groove width is smaller than the first liquid outlet pipe 001, and the second clamping groove 02 slides relative to the second liquid outlet pipe 002 to a position where the groove width is smaller than the second liquid outlet pipe 002, and the first liquid outlet pipe 001 and the second liquid outlet pipe 002 are clamped by the first clamping groove 01 and the second clamping groove 02 respectively and are in a closed state.

[0057] like Figure 5 As shown, corresponding to the state where the first liquid outlet pipe 001 is open and the second liquid outlet pipe 002 is closed, the clamping plate 62 slides under the drive of the tube clamp driving device 63, so that the first clamping groove 01 slides to the left end relative to the first liquid outlet pipe 001, and the second clamping groove 02 slides to the left end relative to the second liquid outlet pipe 002. Since the left end width of the first clamping groove 01 is greater than the diameter of the first liquid outlet pipe 001, the first liquid outlet pipe 001 is no longer clamped and is opened. At the same time, since the left end width of the second clamping groove 02 is less than the diameter of the second liquid outlet pipe 002, the second liquid outlet pipe 002 is still clamped and is closed.

[0058] like Figure 4 As shown, corresponding to the state where the first liquid outlet pipe 001 is closed and the second liquid outlet pipe 002 is opened, the tube clamping plate 62 slides under the drive of the tube clamp driving device 63, so that the first clamping groove 01 slides to the right end relative to the first liquid outlet pipe 001, and the second clamping groove 02 slides to the right end relative to the second liquid outlet pipe 002. Since the right end width of the first clamping groove 01 is smaller than the diameter of the first liquid outlet pipe 001, the first liquid outlet pipe 001 is clamped and closed at this time. At the same time, since the right end width of the second clamping groove 02 is larger than the diameter of the second liquid outlet pipe 002, the second liquid outlet pipe 002 is no longer clamped and opened.

[0059] The start, stop and driving distance of the pipe clamp driving device 63 are all controlled by the control single chip microcomputer 66 .

[0060] The other parts of this embodiment are the same as those of the above-mentioned embodiment 1 or 2, and thus will not be described in detail.

[0061] Embodiment 4:

[0062] This embodiment is further optimized based on any one of the above embodiments 1-3. Figure 2As shown, the tube clamp drive device 63 includes a micro drive motor 631, a screw 632, a nut seat 633, a first bevel gear 634, and a second bevel gear 635. The screw 632 is rotatably arranged below the tube clamping plate 62, and a nut seat 633 screwed on the screw 632 is arranged at the bottom of the tube clamping plate 62; one end of the screw 632 is sleeved with a first bevel gear 634, the first bevel gear 634 is meshed with the second bevel gear 635, and the second bevel gear 635 is sleeved on the output shaft of the micro drive motor 631, and the micro drive motor 631 is also connected to the control single chip computer 66.

[0063] Bushings are arranged on both sides of the bottom of the clamping plate 62 inside the fixed housing 61, and the two ends of the screw rod 632 are respectively rotated in the bushings arranged on both sides to realize rotational installation. The left end of the screw rod 632 is sleeved with a first bevel gear 634 through a connecting key, and a second bevel gear 635 is meshed and installed corresponding to the first bevel gear 634. The second bevel gear 635 is sleeved on the output shaft of the micro-drive motor 631. At the same time, the micro-drive motor 631 is connected to the control microcontroller 66 through a cable to receive the control signal of the control microcontroller 66. A nut seat 633 is installed at the bottom of the clamping plate 62 through a screw, and the screw rod 632 passes through the threaded hole on the nut seat 633 to realize threaded connection.

[0064] The control single chip microcomputer 66 sends a signal to the micro drive motor 631, and the output shaft of the micro drive motor 631 drives the second bevel gear 635 to rotate, thereby driving the first bevel gear 634 and the screw 632 to rotate, and the screw 632 further drives the nut seat 633 and the clamping plate 62 to slide linearly along the sliding waist groove on the inner side of the fixed shell 61.

[0065] The other parts of this embodiment are the same as any one of the above embodiments 1-3, so they are not repeated here.

[0066] Embodiment 5:

[0067] This embodiment is further optimized based on any one of the above embodiments 1-4. Figure 2 As shown, it also includes a battery 67, which is connected to the control single chip computer 66 and the micro drive motor 631 respectively. The fixed housing 61 is also provided with an electrical socket connected to the battery 67.

[0068] A battery 67 is arranged inside the fixed shell 61, and the battery 67 is connected to the control microcontroller 66 and the micro drive motor 631 through cables to supply power to the control microcontroller 66 and the micro drive motor 631. At the same time, an electrical socket connected to the charging end of the battery 67 is arranged on the fixed shell 61, and the battery 67 can be charged through the electrical socket.

[0069] The other parts of this embodiment are the same as any one of the above embodiments 1-4, so they are not repeated here.

[0070] Embodiment 6:

[0071] This embodiment is further optimized on the basis of any one of the above embodiments 1-5. The openings at both ends of the tube through hole of the fixed shell 61 are provided with pipe sleeves for fixing the first liquid outlet pipe and the second liquid outlet pipe. A fixing component is also provided on one side of the fixed shell 61.

[0072] The tube sleeve guides the first liquid outlet pipe 001 and the second liquid outlet pipe 002 to a certain extent when the first liquid outlet pipe 001 and the second liquid outlet pipe 002 are inserted into the fixed shell 61. At the same time, after the first liquid outlet pipe 001 and the second liquid outlet pipe 002 are inserted into the fixed shell 61, the tube sleeve can limit the first liquid outlet pipe 001 and the second liquid outlet pipe 002, so that the relative positions of the first liquid outlet pipe 001 and the second liquid outlet pipe 002 and the first clamping groove 01 and the second clamping groove 02 respectively remain relatively fixed.

[0073] Furthermore, a transparent shell door is provided on the fixed shell 61. When the first liquid outlet pipe 001 and the second liquid outlet pipe 002 are inserted into the interior of the fixed shell 61, the fixed shell 61 can be opened through the shell door, and then the hand can be inserted into the interior of the fixed shell 61 to assist in the insertion of the first liquid outlet pipe 001 and the second liquid outlet pipe 002.

[0074] Further, such as Figure 6 As shown, the fixing assembly includes a fixed card 111, a movable card 222, and an adjusting screw 333. The fixed card 111 is arranged on a side outside the fixed shell 61. The movable card 222 is slidably arranged on the fixed card 111 along the vertical direction. The adjusting screw 333 for tightening the movable card 222 is arranged on the side of the movable card 222 away from the fixed card 111.

[0075] The movable card 222 and the fixed card 111 form a clamp-shaped structure, and a sliding groove is provided on one side of the fixed card 111 close to the movable card 222, and a block slidably connected to the sliding groove is provided at one end of the sliding card 222 to enable the movable card 222 to slide away from or close to the fixed card 111. By adjusting the position between the movable card 222 and the fixed card 111, a space for clamping the bed railing or bed support is reserved between the movable card 222 and the fixed card 111, and then the adjusting screw 333 is rotated so that the adjusting screw 333 tightens the movable card 222, thereby enabling the movable card 222 and the fixed card 111 to clamp and fix the bed railing, thereby achieving the fixation of the fixed shell 61 on the bed railing, and preventing the entire automatic pipeline switching device 6 from shaking.

[0076] The other parts of this embodiment are the same as any one of the above embodiments 1-5, so they are not repeated here.

[0077] Embodiment 7:

[0078] This embodiment is further optimized on the basis of any one of the above embodiments 1-6. An audible and visual alarm is further provided on the fixed housing 61 , and the audible and visual alarm is connected to the control single chip computer 66 .

[0079] When the first drainage bag 1 is filled with liquid, the thin-film pressure sensor 4 is squeezed and sends a signal to the control microcontroller 66. The control microcontroller 66 sends signals to the micro drive motor 631 and the sound and light alarm respectively, so as to close the first liquid outlet tube 001 and sound an alarm through the sound and light alarm at the same time, prompting the medical staff to replace the drainage bag in time.

[0080] The sound and light alarm is also connected to a storage battery 67 , and the storage battery 67 supplies power to the sound and light alarm.

[0081] The other parts of this embodiment are the same as any one of the above embodiments 1-6, so they are not repeated here.

[0082] Embodiment 8:

[0083] This embodiment is further optimized based on any one of the above embodiments 1-7. Figure 7 As shown, an opening is provided at one end of the outer bag 12 for the inner bag 11 to be placed therein, a mother card strip 98 is provided on the inner side of the opening of the outer bag 12, and a child card strip 99 is provided on the outer side of the top of the inner bag 11 to be tightly engaged with the mother card strip 98; an exhaust port is provided at the bottom of the outer bag 12, and a drainage pipe is provided at the bottom of the inner bag 11 to penetrate the outer bag 12 and extend outward.

[0084] The inner bag 11 and the outer bag 12 are both made of flexible transparent plastic. A "concave"-shaped female card strip 98 is provided on the inner side of the top of the outer bag 12 along the inner contour of the outer bag 12, and a "convex"-shaped sub-card strip 99 engaging with the female card strip 98 is provided on the outer side of the top of the inner bag 11 along the outer contour of the inner bag 11. After the inner bag 11 is loaded into the outer bag 12, the female card strip 98 on the outer bag 12 is aligned and engaged with the sub-card strip 99 on the inner bag 11, so that the inner bag 11 can be installed inside the outer bag 12. At the same time, an installation cavity for installing the sheet pressure sensor 4 is also provided on the inner side of the outer bag 12.

[0085] After the inner bag 11 is installed inside the outer bag 12, the drainage pipe at the bottom of the inner bag 11 passes through the through hole at the bottom of the outer bag 12 and extends to the outside of the outer bag 12 for emergency drainage. At the same time, by squeezing the inner bag 11 and the outer bag 12, the air between the inner bag 11 and the outer bag 12 is discharged through the exhaust port on the outer bag 12, so that the outer side surface of the inner bag 11 and the inner side surface of the outer bag 12 are as close as possible, so that the thin-film pressure sensor 4 can be squeezed smoothly when the inner bag 11 expands.

[0086] The other parts of this embodiment are the same as any one of the above embodiments 1-7, so they are not repeated here.

[0087] Embodiment 9:

[0088] This embodiment is further optimized on the basis of any one of the above embodiments 1-8. Figure 8 As shown, the first liquid outlet tube 001 is provided with a one-way valve inclined toward the first drainage bag 1 , and the second liquid outlet tube 002 is provided with a one-way valve inclined toward the second drainage bag 2 .

[0089] The one-way valve is made of flexible plastic material. When the liquid flows from the inlet end to the outlet end of the first liquid outlet pipe 001 and from the inlet end to the outlet end of the second liquid outlet pipe 002, the one-way valve opens to keep the first liquid outlet pipe 001 and the second liquid outlet pipe 002 unobstructed; when the liquid in the first liquid outlet pipe 001 and the second liquid outlet pipe 002 flows back from the outlet end to the inlet end, the one-way valve closes to prevent the liquid from flowing back.

[0090] The first drainage bag 1 and the second drainage bag 2 are both provided with scale lines, through which the liquid capacity inside the first drainage bag 1 or the second drainage bag 2 can be visually observed so that medical staff can replace it in time.

[0091] The other parts of this embodiment are the same as any one of the above embodiments 1-8, so they are not repeated here.

[0092] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A drainage bag for automatically controlling the opening and closing of a drainage tube, comprising a first drainage bag (1), a second drainage bag (2), and a three-way hose (3), characterized in that: The first drainage bag (1) and the second drainage bag (2) both comprise an inner bag (11) and an outer bag (12); the outer bag (12) is sleeved on the outside of the inner bag (11), and a thin-film pressure sensor (4) is arranged between the outer bag (12) and the inner bag (11); the first liquid outlet pipe and the second liquid outlet pipe of the three-way hose (3) are respectively connected to the inlet ends of the two inner bags (11); an automatic pipeline switching device (6) for switching the on / off state of the first liquid outlet pipe and the second liquid outlet pipe is arranged between the first liquid outlet pipe and the second liquid outlet pipe, and the automatic pipeline switching device (6) is connected to the thin-film pressure sensor (4); The automatic pipeline switching device (6) comprises a fixed housing (61), a tube clamping plate (62), a tube clamp driving device (63), and a control single chip computer (66). The housing (61) is provided with tube through holes for the first liquid outlet pipe and the second liquid outlet pipe to pass through, respectively. The housing (61) is provided with a tube clamping plate (62) inside the housing (61) so as to slide along a direction perpendicular to the axis through which the first liquid outlet pipe and the second liquid outlet pipe pass. A tube clamp driving device (63) is provided on one side of the tube clamping plate (62) so as to drive the tube clamping plate (62) to slide back and forth and is connected to the control single chip computer (66). The control single chip computer (66) is also connected to the control single chip computer (66). The tube clamp plate (62) is connected to a thin film pressure sensor (4); the first clamping groove (01) and the second clamping groove (02) are respectively provided on the tube clamping plate (62) for the first liquid outlet pipe and the second liquid outlet pipe to pass through, the width of the first clamping groove (01) gradually increases from less than the diameter of the first liquid outlet pipe to greater than the diameter of the first liquid outlet pipe along the sliding direction, the width of the second clamping groove (02) is less than the diameter of the second liquid outlet pipe, and an escape opening greater than the diameter of the second liquid outlet pipe is provided at one end of the second clamping groove (02); the tube clamp driving device (63) comprises a micro driving motor (631), a screw rod (632), and a nut seat (633), a first bevel gear (634), and a second bevel gear (635), the screw rod (632) is rotatably arranged below the tube clamping plate (62), and a nut seat (633) screwed on the screw rod (632) is arranged at the bottom of the tube clamping plate (62); one end of the screw rod (632) is sleeved with a first bevel gear (634), the first bevel gear (634) is meshed with the second bevel gear (635), and the second bevel gear (635) is sleeved on the output shaft of the micro drive motor (631), and the micro drive motor (631) is also connected to the control single chip computer (66).

2. A drainage bag with automatic control of opening and closing of the drainage tube according to claim 1, characterized in that: It also includes a storage battery (67), the storage battery (67) being connected to the control single chip computer (66) and the micro drive motor (631) respectively, and the fixed housing (61) is also provided with an electrical socket connected to the storage battery (67).

3. A drainage bag with automatic control of opening and closing of the drainage tube according to claim 1 or 2, characterized in that: Pipe sleeves for fixing the first liquid outlet pipe and the second liquid outlet pipe are provided at the openings at both ends of the pipe through hole of the fixed shell (61), and a fixing component is also provided on one side of the fixed shell (61).

4. A drainage bag with automatic control of opening and closing of the drainage tube according to claim 3, characterized in that: The fixing assembly comprises a fixed card, a movable card and an adjusting screw. The fixed card is arranged on one side outside the fixed housing (61). A movable card is arranged on the fixed card for sliding in a vertical direction. An adjusting screw for tightening the movable card is arranged on a side of the movable card away from the fixed card.

5. A drainage bag with automatic control of opening and closing of the drainage tube according to claim 4, characterized in that: An audible and visual alarm is also provided inside the fixed housing (61), and the audible and visual alarm is connected to the control single chip computer (66).

6. A drainage bag with automatic control of opening and closing of the drainage tube according to claim 1 or 2, characterized in that: An opening is provided at one end of the outer bag (12) for the inner bag (11) to be loaded, a mother card strip is provided on the inner side of the opening of the outer bag (12), and a sub-card strip is provided on the outer side of the top of the inner bag (11) to be tightly engaged with the mother card strip; an exhaust port is provided at the bottom of the outer bag (12), and a drainage pipe is provided at the bottom of the inner bag (11) which penetrates the outer bag (12) and extends outward.

7. A drainage bag with automatic control of opening and closing of the drainage tube according to claim 1 or 2, characterized in that: The first liquid outlet tube is provided with a one-way valve inclined toward the first drainage bag (1) inside, and the second liquid outlet tube is provided with a one-way valve inclined toward the second drainage bag (2) inside.

8. A drainage bag for automatically controlling the opening and closing of a drainage tube according to claim 7, characterized in that: The first drainage bag (1) and the second drainage bag (2) are both provided with scale marks.

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