Pumping mixing type pancreatic cancer postoperative drainage equipment

Abstract

The invention relates to the field of medical instruments, and discloses a water pumping mixing type pancreatic cancer postoperative drainage device which comprises a negative pressure pump cabin, a liquid inlet and a liquid outlet are formed in the negative pressure pump cabin, the liquid inlet is communicated with a water inlet pipe and a first drainage pipe, the liquid outlet is communicated with a second drainage pipe, the end of the water inlet pipe is connected with a water supply tank, and the end of the second drainage pipe is connected with a liquid storage tank. A first overflowing cabin and a second overflowing cabin are formed in the negative pressure pump cabin, a first pipe cabin and a second pipe cabin are arranged between the first overflowing cabin and the second overflowing cabin in a communicating mode, and one-way valve structures are arranged at the connecting positions of the first overflowing cabin and the first pipe cabin and the connecting positions of the second overflowing cabin and the second pipe cabin. According to the device, the first drainage tube is placed in a wound surface, negative pressure is generated in the negative pressure pump cabin, the hydrops enters the liquid inlet along the first drainage tube under the action of the negative pressure and is mixed with water at the liquid inlet, the concentration and viscosity of the hydrops are reduced after the hydrops and the water are mixed, the situation that the hydrops are blocked in a pipeline due to high viscosity is reduced, and the anti-blocking effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a pumping and mixing type postoperative drainage device for pancreatic cancer. Background Art

[0002] After pancreatic cancer surgery, to avoid wound infection, a drainage tube is placed at the wound site to drain the wound exudate and effusion, keeping the surgical wound clean, thereby accelerating the patient's recovery. During the use of the traditional drainage device for pancreatic surgery, the drainage tube may be blocked due to the high viscosity of the effusion. To avoid drainage tube blockage, the tube needs to be frequently replaced, and replacing the tube will increase the patient's pain. When the drainage tube is blocked, medical staff are difficult to know in the first time and cannot handle the drainage tube in time, thus increasing the patient's pain.

[0003] To solve the above problems, the invention patent with the publication number of CN115025303A in the prior art provides a hepatobiliary and pancreatic drainage device, which strengthens the activity of the effusion in the drainage tube by heating, avoids blockage due to the high viscosity of the effusion, reduces the frequency of drainage tube replacement, and at the same time reduces the workload of the staff.

[0004] In the prior art, the heating plate only heats the effusion in the tube at the directly opposite position. The effusion in the tube downstream of the heating plate gradually cools down, and the activity of the effusion may not be sufficient and blockage may still occur. The blockage of the downstream tube affects the flow of the upstream tube, and the overall anti-blockage effect is not good. Summary of the Invention

[0005] Therefore, the present invention provides a pumping and mixing type postoperative drainage device for pancreatic cancer, which effectively solves the technical problems that the activity of the effusion may not be sufficient and blockage may still occur in the prior art, the blockage of the downstream tube affects the flow of the upstream tube, and the overall anti-blockage effect is not good.

[0006] To solve the above technical problems, the present invention specifically provides the following technical solution: A pumping and mixing type postoperative drainage device for pancreatic cancer, including a negative pressure pump chamber, on which a liquid inlet and a liquid outlet are provided. The liquid inlet is connected to a water inlet pipe and a first drainage tube, the liquid outlet is connected to a second drainage tube, the end of the water inlet pipe is connected to a water supply tank, and the end of the second drainage tube is connected to a liquid storage tank;

[0007] Symmetrical first flow-through chambers and second flow-through chambers are formed in the negative pressure pump chamber. A first pipe chamber and a second pipe chamber are respectively connected and arranged between the first flow-through chamber and the second flow-through chamber. The liquid outlet is arranged on the first pipe chamber, the liquid inlet is arranged on the second pipe chamber, a first diaphragm is arranged on the inner wall of the first flow-through chamber close to the second flow-through chamber, and a second diaphragm is arranged on the inner wall of the second flow-through chamber close to the first flow-through chamber;

[0008] A drive cabin is arranged between the first flow-through cabin and the second flow-through cabin. A displacement drive is arranged in the drive cabin. The end of the displacement drive is connected to the first diaphragm and the second diaphragm. The displacement drive can reciprocate along the connection line direction of the first flow-through cabin and the second flow-through cabin, so as to pull the second diaphragm when pushing the first diaphragm into the first flow-through cabin, and pull the first diaphragm when pushing the second diaphragm into the second flow-through cabin;

[0009] Wherein, when the first diaphragm is pushed, the liquid in the first flow-through cabin is squeezed into the first pipe cabin and flows out from the liquid outlet. The second diaphragm is pulled, so that a negative pressure is formed in the second flow-through cabin, so as to promote part of the liquid in the first pipe cabin to enter the second flow-through cabin. When the second diaphragm is pushed, the liquid in the second flow-through cabin is squeezed into the second pipe cabin and converges with the liquid flowing in from the liquid inlet. The first diaphragm is pulled, so that a negative pressure is formed in the first flow-through cabin, so as to promote the liquid in the second pipe cabin to enter the first flow-through cabin;

[0010] One-way valve structures are arranged at the joints of the first flow-through cabin, the second flow-through cabin and the first pipe cabin and the second pipe cabin.

[0011] Further, the displacement amount of the reciprocating motion of the first diaphragm is greater than the displacement amount of the reciprocating motion of the second diaphragm.

[0012] Further, the first pipe cabin and the second pipe cabin are symmetrical to each other;

[0013] The first pipe cabin includes a first vertical pipe section, a first horizontal pipe section and a second vertical pipe section connected in sequence;

[0014] The second pipe cabin includes a third vertical pipe section, a second horizontal pipe section and a fourth vertical pipe section connected in sequence.

[0015] Further, the first flow-through cabin is provided with a first upper conduit facing the first pipe cabin, and the first flow-through cabin is provided with a first lower conduit facing the second pipe cabin. The first upper conduit is docked with the first vertical pipe section, and the first lower conduit is docked with the third vertical pipe section;

[0016] The second flow-through cabin is provided with a second upper conduit facing the first pipe cabin, and the second flow-through cabin is provided with a second lower conduit facing the second pipe cabin. The second upper conduit is docked with the second vertical pipe section, and the second lower conduit is docked with the fourth vertical pipe section.

[0017] Further, the one-way valve structure includes a first valve ring disposed in the first upper conduit, a first baffle disposed in the first vertical pipe section, a second valve ring disposed in the third vertical pipe section, a second baffle disposed in the first lower conduit, a third valve ring disposed in the second vertical pipe section, a third baffle disposed in the second upper conduit, a fourth valve ring disposed in the second lower conduit, and a fourth baffle disposed in the fourth vertical pipe section;

[0018] A first valve ball is disposed between the first valve ring and the first baffle, and the outer wall of the first valve ball can completely seal the first valve ring. A second valve ball is disposed between the second valve ring and the second baffle, and the outer wall of the second valve ball can completely seal the second valve ring. A third valve ball is disposed between the third valve ring and the third baffle, and the outer wall of the third valve ball can completely seal the third valve ring. A fourth valve ball is disposed between the fourth valve ring and the fourth baffle, and the outer wall of the fourth valve ball can completely seal the fourth valve ring.

[0019] Further, the first valve ball, the second valve ball, the third valve ball, and the fourth valve ball have the same diameter;

[0020] Wherein, the distances between the first valve ring and the first baffle, between the second valve ring and the second baffle, between the third valve ring and the third baffle, and between the fourth valve ring and the fourth baffle are all greater than the diameter of the first valve ball;

[0021] The radius of the first valve ball is smaller than the inner diameters of the first vertical pipe section, the second vertical pipe section, the third vertical pipe section, the fourth vertical pipe section, the first upper conduit, the first lower conduit, the second upper conduit, and the second lower conduit.

[0022] Further, the displacement driving member includes a first movable frame disposed in the driving chamber, a first connecting rod connected to the side of the first movable frame, and a first support plate connected to the end of the first connecting rod;

[0023] A second movable frame is disposed in the driving chamber, a second connecting rod is connected to the side of the second movable frame, and a second support plate is connected to the end of the second connecting rod;

[0024] The first diaphragm is connected to the surface of the first support plate, and the second diaphragm is connected to the surface of the second support plate.

[0025] Further, a plurality of first meshing teeth are disposed at the upper and lower opposite positions on the inner wall of the first movable frame. A first driving wheel is disposed in the first movable frame, and a plurality of first wheel teeth are disposed outside the first driving wheel, and the first wheel teeth can mesh with the first meshing teeth;

[0026] On the upper and lower opposite positions of the inner wall of the second movable frame, a number of second engaging teeth are provided. A second driving wheel is arranged inside the second movable frame, and a number of second wheel teeth are arranged outside the second driving wheel. The second wheel teeth can be engaged with the second engaging teeth;

[0027] An installation cabin is installed outside the driving cabin. A driving motor is arranged inside the installation cabin. The driving end of the driving motor is connected with a driving shaft. The first driving wheel and the second driving wheel are both installed on the driving shaft.

[0028] Further, the size of the first movable frame is larger than that of the second movable frame, and the size ratios of the first movable frame and the second movable frame, the first driving wheel and the second driving wheel, and the first wheel teeth and the second wheel teeth are all the same.

[0029] Further, a liquid level gauge is arranged inside the water supply tank.

[0030] The present invention has the following beneficial effects compared with the prior art:

[0031] In the present invention, the first drainage tube is placed into the wound surface, a negative pressure is generated in the negative pressure pump cabin. Under the action of the negative pressure, the effusion flows into the liquid inlet along the first drainage tube, and is mixed with water at the liquid inlet. After the effusion is mixed with water, the concentration decreases and the viscosity drops, reducing the situation of blockage in the pipeline due to high viscosity of the effusion, and improving the anti-blocking effect;

[0032] Further, part of the liquid passing through the negative pressure pump cabin flows out from the liquid outlet, and the remaining part of the liquid continues to be mixed with the liquid entering from the liquid inlet under the action of the negative pressure, realizing the secondary mixing of the liquid, ensuring the uniform mixing of the liquid, ensuring the uniform distribution of the concentration of the mixed liquid, and avoiding the problem of blockage caused by uneven mixing of the effusion and water resulting in locally excessive viscosity, and improving the overall anti-blocking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained according to the provided drawings.

[0034] Figure 1 It is a schematic structural diagram of a pumping and mixing type postoperative drainage device for pancreatic cancer provided by an embodiment of the present invention;

[0035] Figure 2 It is a schematic top view structural diagram of a pumping and mixing type postoperative drainage device for pancreatic cancer provided by an embodiment of the present invention;

[0036] Figure 3 Structural schematic diagram of the negative pressure pump cabin in the embodiment of the present invention;

[0037] Figure 4 Top view structural schematic diagram of the negative pressure pump cabin in the embodiment of the present invention;

[0038] Figure 5 is Figure 4 Cross-sectional view in the A-A direction of

[0039] Figure 6 is Figure 4 Stereoscopic cross-sectional view in the B-B direction of

[0040] Figure 7 is Figure 6 Internal structural schematic diagram of the first flow-through cabin, the second flow-through cabin and the drive cabin in

[0041] Figure 8 is Figure 5 Structural schematic diagram in which the first diaphragm is pulled and the second diaphragm is pushed in

[0042] Figure 9 Structural schematic diagram with a relatively large number of first teeth on the first driving wheel in the embodiment of the present invention;

[0043] Figure 10 Structural schematic diagram with a relatively small number of first teeth on the first driving wheel in the embodiment of the present invention.

[0044] The reference numerals in the figure respectively represent the following:

[0045] 1, liquid inlet; 2, liquid outlet; 3, water inlet pipe; 4, first drainage pipe; 5, second drainage pipe; 6, water supply tank; 7, check valve structure; 8, negative pressure pump cabin; 9, displacement driving member; 10, liquid storage tank; 11, liquid level gauge;

[0046] 71, first valve ring; 72, first baffle; 73, second valve ring; 74, second baffle; 75, third valve ring; 76, third baffle; 77, fourth valve ring; 78, fourth baffle; 79, first valve ball; 710, second valve ball; 711, third valve ball; 712, fourth valve ball;

[0047] 81, first flow-through cabin; 82, second flow-through cabin; 83, first pipe cabin; 84, second pipe cabin; 85, first diaphragm; 86, second diaphragm; 87, drive cabin; 88, first upper conduit; 89, first lower conduit; 810, second upper conduit; 811, second lower conduit;

[0048] 91. First movable frame; 92. First connecting rod; 93. First support plate; 94. Second movable frame; 95. Second connecting rod; 96. Second support plate; 97. First meshing tooth; 98. First driving wheel; 99. First set of teeth; 910. Second meshing tooth; 911. Second driving wheel; 912. Second set of teeth; 913. Installation cabin; 914. Drive shaft;

[0049] 831. First vertical pipe section; 832. First horizontal pipe section; 833. Second vertical pipe section;

[0050] 841. Third vertical pipe section; 842. Second horizontal pipe section; 843. Fourth vertical pipe section. Detailed implementation manner

[0051] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0052] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, the present invention provides a pumping and mixing type postoperative drainage device for pancreatic cancer, including a negative pressure pump cabin 8. An inlet 1 and an outlet 2 are provided on the negative pressure pump cabin 8. The inlet 1 is connected to a water inlet pipe 3 and a first drainage pipe 4, and the outlet 2 is connected to a second drainage pipe 5. The end of the water inlet pipe 3 is connected to a water supply tank 6, and the end of the second drainage pipe 5 is connected to a liquid storage tank 10.

[0053] The accumulated fluid is drained from the first drainage pipe 4 to the inlet 1, enters the negative pressure pump cabin 8 together with water from the inlet 1, passes through the negative pressure pump cabin 8 and enters the second drainage pipe 5 from the outlet 2, and finally enters the liquid storage tank 10 through the second drainage pipe 5.

[0054] Among them, in practical applications, the length of the first drainage pipe 4 is shorter, and the length of the second drainage pipe 5 is longer. The first drainage pipe 4 can be regarded as a pipe head structure placed on the wound surface. Since the length of the first drainage pipe 4 is shorter, it is not easy to cause blockage in the first drainage pipe 4. The present invention is mainly designed for anti-blockage inside the second drainage pipe 5.

[0055] In the negative pressure pump chamber 8, symmetric first flow-through chambers 81 and second flow-through chambers 82 are formed. A first pipe chamber 83 and a second pipe chamber 84 are respectively and communicatively arranged between the first flow-through chamber 81 and the second flow-through chamber 82. The liquid outlet 2 is arranged on the first pipe chamber 83, and the liquid inlet 1 is arranged on the second pipe chamber 84. A first diaphragm 85 is arranged on the inner wall of the first flow-through chamber 81 close to the second flow-through chamber 82, and a second diaphragm 86 is arranged on the inner wall of the second flow-through chamber 82 close to the first flow-through chamber 81;

[0056] A drive chamber 87 is arranged between the first flow-through chamber 81 and the second flow-through chamber 82. A displacement drive member 9 is arranged in the drive chamber 87. The end of the displacement drive member 9 is connected to the first diaphragm 85 and the second diaphragm 86. The displacement drive member 9 can reciprocate along the connection line direction of the first flow-through chamber 81 and the second flow-through chamber 82, so as to pull the second diaphragm 86 when pushing the first diaphragm 85 into the first flow-through chamber 81, and pull the first diaphragm 85 when pushing the second diaphragm 86 into the second flow-through chamber 82;

[0057] Wherein, when the first diaphragm 85 is pushed, the liquid in the first flow-through chamber 81 is squeezed into the first pipe chamber 83 and flows out from the liquid outlet 2. When the second diaphragm 86 is pulled, a negative pressure is formed in the second flow-through chamber 82, so as to promote part of the liquid in the first pipe chamber 83 to enter the second flow-through chamber 82. When the second diaphragm 86 is pushed, the liquid in the second flow-through chamber 82 is squeezed into the second pipe chamber 84 and converges with the liquid flowing in from the liquid inlet 1. When the first diaphragm 85 is pulled, a negative pressure is formed in the first flow-through chamber 81, so as to promote the liquid in the second pipe chamber 84 to enter the first flow-through chamber 81;

[0058] A one-way valve structure 7 is arranged at the connection of the first flow-through chamber 81, the second flow-through chamber 82 and the first pipe chamber 83, the second pipe chamber 84. The arrangement of the one-way valve structure 7 can make the water flow direction in the negative pressure pump chamber 8 the same, ensuring consistent and stable flow direction.

[0059] In the present invention, the first drainage tube 4 is placed into the wound surface, and a negative pressure is generated in the negative pressure pump chamber 8. Under the action of the negative pressure, the effusion flows into the liquid inlet 1 along the first drainage tube 4 and is mixed with water at the liquid inlet 1. After the effusion and water are mixed, the concentration decreases and the viscosity drops, reducing the situation of blockage in the pipeline due to high effusion viscosity and improving the anti-blocking effect.

[0060] Furthermore, part of the liquid passing through the negative pressure pump chamber 8 flows out from the liquid outlet 2, and the remaining part of the liquid continues to be mixed with the liquid entering from the liquid inlet 1 under the action of the negative pressure, realizing secondary mixing of the liquid, ensuring uniform mixing of the liquid, ensuring uniform distribution of the concentration of the mixed liquid, and avoiding the problem of blockage caused by local excessive viscosity due to uneven mixing of the effusion and water, improving the overall anti-blocking effect.

[0061] In the present invention, the internal volumes of the first overflow chamber 81 and the second overflow chamber 82 are the same, and the shapes, dimensions, and relative mounting positions of the first diaphragm 85 and the second diaphragm 86 are the same. A rectangular circulating fluid circuit is formed inside the negative pressure pump chamber 8. During the flow of the liquid, a part of the mixed liquid in the first overflow chamber 81 flows out entirely from the liquid outlet 2 directly after passing through the first pipe chamber 83, and another part still circulates inside the negative pressure pump chamber 8 to mix with the newly entered water and accumulated liquid to further improve the mixing effect. For this, the present invention makes the following design: the displacement amount of the reciprocating motion of the first diaphragm 85 is greater than the displacement amount of the reciprocating motion of the second diaphragm 86.

[0062] Among them, the first diaphragm 85 and the second diaphragm 86 perform reciprocating motions. By default, the displacement amounts of the reciprocating motions of the first diaphragm 85 are the same, and the displacement amounts of the reciprocating motions of the second diaphragm 86 are the same. In the first overflow chamber 81, the greater the displacement amount of the first diaphragm 85, the more liquid is squeezed into the first pipe chamber 83 during the process of pushing the first diaphragm 85, and the more liquid is attracted into the first overflow chamber 81 during the process of pulling the first diaphragm 85. In the second overflow chamber 82, the greater the displacement amount of the second diaphragm 86, the more liquid is squeezed into the second pipe chamber 84 during the process of pushing the second diaphragm 86, and the more liquid is attracted into the second overflow chamber 82 during the process of pulling the second diaphragm 86.

[0063] Under the condition that the displacement amount of the reciprocating motion of the first diaphragm 85 is greater than the displacement amount of the reciprocating motion of the second diaphragm 86, if during the process of pushing the first diaphragm 85 and pulling the second diaphragm 86, the amount of liquid squeezed into the first pipe chamber 83 during the process of pushing the first diaphragm 85 is s1, and the amount of liquid attracted into the second overflow chamber 82 during the process of pulling the second diaphragm 86 is s2, then s1 must be greater than s2. Then, among the liquid flowing out from the first overflow chamber 81, the liquid of s2 enters the second overflow chamber 82, and the liquid of (s1 - s2) is discharged from the liquid outlet 2 on the first pipe chamber 83;

[0064] If during the process of pushing the second diaphragm 86 and pulling the first diaphragm 85, the amount of liquid squeezed into the second pipe chamber 84 during the process of pushing the second diaphragm 86 is s2, and the amount of liquid attracted into the first overflow chamber 81 during the process of pulling the first diaphragm 85 is s1, then during this process, (s1 - s2) of the liquid is attracted from the liquid inlet 1 into the second pipe chamber 84 to enter the first overflow chamber 81 together with the liquid in the second overflow chamber 82, and the liquid of (s1 - s2) includes water and accumulated liquid.

[0065] Therefore, under the condition that the displacement amount of the reciprocating motion of the first diaphragm 85 is greater than the displacement amount of the reciprocating motion of the second diaphragm 86, a part of the mixed liquid can be circulated inside the negative pressure pump chamber 8, repeatedly mixed with the accumulated liquid and water at the liquid inlet 1, achieving multiple uniform mixings and enhancing the mixing effect of the accumulated liquid and water.

[0066] In the present invention, the negative pressure pump cabin 8 is composed of a first pipe cabin 83, a second pipe cabin 84, a first flow-through cabin 81, and a second flow-through cabin 82. Specifically, as Figure 3 shown, the first pipe cabin 83 and the second pipe cabin 84 are symmetrical to each other. The first pipe cabin 83 includes a first vertical pipe section 831, a first horizontal pipe section 832, and a second vertical pipe section 833 connected in sequence. The second pipe cabin 84 includes a third vertical pipe section 841, a second horizontal pipe section 842, and a fourth vertical pipe section 843 connected in sequence.

[0067] The first flow-through cabin 81 is provided with a first upper conduit 88 facing the first pipe cabin 83, and the first flow-through cabin 81 is provided with a first lower conduit 89 facing the second pipe cabin 84. The first upper conduit 88 is docked with the first vertical pipe section 831, and the first lower conduit 89 is docked with the third vertical pipe section 841;

[0068] The second flow-through cabin 82 is provided with a second upper conduit 810 facing the first pipe cabin 83, and the second flow-through cabin 82 is provided with a second lower conduit 811 facing the second pipe cabin 84. The second upper conduit 810 is docked with the second vertical pipe section 833, and the second lower conduit 811 is docked with the fourth vertical pipe section 843.

[0069] As Figure 5 and Figure 6 shown, the one-way valve structure 7 includes a first valve ring 71 arranged in the first upper conduit 88, a first baffle 72 arranged in the first vertical pipe section 831, a second valve ring 73 arranged in the third vertical pipe section 841, a second baffle 74 arranged in the first lower conduit 89, a third valve ring 75 arranged in the second vertical pipe section 833, a third baffle 76 arranged in the second upper conduit 810, a fourth valve ring 77 arranged in the second lower conduit 811, and a fourth baffle 78 arranged in the fourth vertical pipe section 843;

[0070] A first valve ball 79 is arranged between the first valve ring 71 and the first baffle 72, and the outer wall of the first valve ball 79 can completely seal the first valve ring 71. A second valve ball 710 is arranged between the second valve ring 73 and the second baffle 74, and the outer wall of the second valve ball 710 can completely seal the second valve ring 73. A third valve ball 711 is arranged between the third valve ring 75 and the third baffle 76, and the outer wall of the third valve ball 711 can completely seal the third valve ring 75. A fourth valve ball 712 is arranged between the fourth valve ring 77 and the fourth baffle 78, and the outer wall of the fourth valve ball 712 can completely seal the fourth valve ring 77.

[0071] Among them, the first baffle 72 does not completely seal the first vertical pipe section 831, the second baffle 74 does not completely seal the first lower conduit 89, the third baffle 76 does not completely seal the second upper conduit 810, and the fourth baffle 78 does not completely seal the fourth vertical pipe section 843.

[0072] In the above embodiments, the first pipe compartment 83 and the second pipe compartment 84 are both detachable. The connection between the first upper conduit 88 and the first vertical pipe section 831 is detachably connected, the connection between the first lower conduit 89 and the third vertical pipe section 841 is detachably connected, the connection between the second upper conduit 810 and the second vertical pipe section 833 is detachably connected, and the connection between the second lower conduit 811 and the fourth vertical pipe section 843 is detachably connected.

[0073] The first valve ball 79, the second valve ball 710, the third valve ball 711, and the fourth valve ball 712 are all arranged at the above-mentioned connections. To avoid blockage in the negative pressure pump compartment 8, the corresponding connections can be periodically disassembled to clean the interior.

[0074] The first valve ball 79, the second valve ball 710, the third valve ball 711, and the fourth valve ball 712 have the same diameter;

[0075] Among them, the distances between the first valve ring 71 and the first baffle 72, between the second valve ring 73 and the second baffle 74, between the third valve ring 75 and the third baffle 76, and between the fourth valve ring 77 and the fourth baffle 78 are all greater than the diameter of the first valve ball 79;

[0076] The radius of the first valve ball 79 is smaller than the inner diameters of the first vertical pipe section 831, the second vertical pipe section 833, the third vertical pipe section 841, the fourth vertical pipe section 843, the first upper conduit 88, the first lower conduit 89, the second upper conduit 810, and the second lower conduit 811, so as to ensure that the interior of the pipeline is in a flowing state under certain conditions.

[0077] Specifically, as Figure 5 shown, when the first diaphragm 85 is pushed and the second diaphragm 86 is pulled, under hydraulic action, the first valve ball 79 abuts against the first baffle 72, and the channel between the first flow-through compartment 81 and the first pipe compartment 83 is communicated. The second valve ball 710 is buckled on the second valve ring 73, and the channel between the first flow-through compartment 81 and the second pipe compartment 84 is sealed. The third valve ball 711 abuts against the third baffle 76, and the channel between the first pipe compartment 83 and the second flow-through compartment 82 is communicated. The fourth valve ball 712 is buckled on the fourth valve ring 77, and the channel between the second pipe compartment 84 and the second flow-through compartment 82 is sealed. At this time, the liquid in the first flow-through compartment 81 can be squeezed into the first pipe compartment 83 and flow out from the liquid outlet 2. The pulling of the second diaphragm 86 causes a negative pressure to be formed in the second flow-through compartment 82 to promote some of the liquid in the first pipe compartment 83 to enter the second flow-through compartment 82;

[0078] As Figure 8As shown, when the second diaphragm 86 is pushed and the first diaphragm 85 is pulled, under the hydraulic action, the first valve ball 79 is buckled on the first valve ring 71, the channel between the first flow-through chamber 81 and the first pipe chamber 83 is sealed, the second valve ball 710 abuts against the second baffle 74, the channel between the first flow-through chamber 81 and the second pipe chamber 84 is communicated, the third valve ball 711 is buckled on the third valve ring 75, the channel between the first pipe chamber 83 and the second flow-through chamber 82 is sealed, the fourth valve ball 712 abuts against the fourth baffle 78, and the channel between the second pipe chamber 84 and the second flow-through chamber 82 is communicated. At this time, the liquid in the second flow-through chamber 82 is squeezed into the second pipe chamber 84 and converges with the liquid flowing in from the liquid inlet 1. The pulling of the first diaphragm 85 causes a negative pressure to be formed in the first flow-through chamber 81, so as to promote the liquid in the second pipe chamber 84 to enter the first flow-through chamber 81.

[0079] In the present invention, the pushing and pulling of the first diaphragm 85 and the second diaphragm 86 are driven by the displacement driving member 9. Specifically, as Figure 7 shown, the displacement driving member 9 includes a first movable frame 91 arranged in the driving chamber 87, a first connecting rod 92 connected to the side of the first movable frame 91, and a first support plate 93 connected to the end of the first connecting rod 92;

[0080] A second movable frame 94 is arranged in the driving chamber 87. A second connecting rod 95 is connected to the side of the second movable frame 94, and a second support plate 96 is connected to the end of the second connecting rod 95. The first diaphragm 85 is connected to the surface of the first support plate 93, and the second diaphragm 86 is connected to the surface of the second support plate 96.

[0081] A number of first meshing teeth 97 are arranged at the upper and lower opposite positions on the inner wall of the first movable frame 91. A first driving wheel 98 is arranged in the first movable frame 91, and a number of first wheel teeth 99 are arranged outside the first driving wheel 98. The first wheel teeth 99 can mesh with the first meshing teeth 97;

[0082] A number of second meshing teeth 910 are arranged at the upper and lower opposite positions on the inner wall of the second movable frame 94. A second driving wheel 911 is arranged in the second movable frame 94, and a number of second wheel teeth 912 are arranged outside the second driving wheel 911. The second wheel teeth 912 can mesh with the second meshing teeth 910;

[0083] An installation chamber 913 is installed outside the driving chamber 87. A driving motor is arranged in the installation chamber 913. The driving end of the driving motor is connected with a driving shaft 914. The first driving wheel 98 and the second driving wheel 911 are both installed on the driving shaft 914.

[0084] Driven by the drive motor, the drive shaft 914 rotates, and the first drive wheel 98 and the second drive wheel 911 rotate. Assuming that at this time the first diaphragm 85 is pushed to the farthest position, the first gear teeth 99 on the first drive wheel 98 just disengage from the first meshing teeth 97 at the bottom inside the first movable frame 91 and contact the first meshing teeth 97 at the top inside the first movable frame 91. Subsequently, the first movable frame 91 will be driven by the first gear teeth 99 to move towards the side of the second diaphragm 86. Gradually, the second diaphragm 86 is pushed to the farthest position, the first gear teeth 99 on the first drive wheel 98 just disengage from the first meshing teeth 97 at the top inside the first movable frame 91 and contact the first meshing teeth 97 at the bottom inside the first movable frame 91. Subsequently, the first movable frame 91 will be driven by the first gear teeth 99 to move towards the side of the first diaphragm 85. This process repeats, and the movement process of the second movable frame 94 is the same as above.

[0085] Since the displacement of the first diaphragm 85 during reciprocating motion is greater than the displacement of the second diaphragm 86 during reciprocating motion, therefore, the displacement of the first movable frame 91 during reciprocating motion is greater than the displacement of the second movable frame 94 during reciprocating motion. And the displacements of the first diaphragm 85 and the second diaphragm 86 depend on the sizes of the first movable frame 91, the second movable frame 94, the first drive wheel 98, and the second drive wheel 911. Therefore, the present invention makes the following design: the size of the first movable frame 91 is greater than the size of the second movable frame 94, and the size ratios of the first movable frame 91 and the second movable frame 94, the first drive wheel 98 and the second drive wheel 911, and the first gear teeth 99 and the second gear teeth 912 are all the same.

[0086] Overall, regarding the first movable frame 91, the first drive wheel 98, the first gear teeth 99, and the first meshing teeth 97 as the first drive structure, and regarding the second movable frame 94, the second drive wheel 911, the second gear teeth 912, and the second meshing teeth 910 as the second drive structure, the first drive structure can be regarded as a structure obtained by proportionally enlarging the second drive structure. Correspondingly, the displacement of the first drive structure is also greater than the displacement of the second drive structure.

[0087] In addition to the above design that can meet the condition of "the displacement of the first diaphragm 85 during reciprocating motion is greater than the displacement of the second diaphragm 86 during reciprocating motion", the first movable frame 91 and the second movable frame 92 can also be set to have the same size and the same shape, and the number of the first gear teeth 99 distributed on the first drive wheel 98 is different from the number of the second gear teeth 912 distributed on the second drive wheel 911. For example, Figure 9 as shown, the more teeth there are on the wheel (within a certain number range), the greater the displacement of driving the first movable frame 91 or the second movable frame 92 to reciprocate. As shown in Figure 10 as shown, the fewer teeth there are on the wheel, the smaller the displacement of driving the first movable frame 91 or the second movable frame 92 to reciprocate.

[0088] In addition, the displacement driving member 9 may also adopt two driving cylinders with different displacement amounts. The driving cylinders are communicated with each other (the liquid moves back and forth between the two driving cylinders). The driving ends of the driving cylinders are connected to the first connecting rod 92 and the second connecting rod 95. When the driving end of one driving cylinder extends, the driving end of the other driving cylinder retracts, driving the corresponding first diaphragm 85 and second diaphragm 86 to reciprocate. The inner diameters of the cavities in the two driving cylinders are different. When the single liquid flow amount between the driving cylinders is constant, the displacement amounts of the pistons in the two driving cylinders driven are different, so as to meet the condition that "the displacement amount of the reciprocating motion of the first diaphragm 85 is greater than the displacement amount of the reciprocating motion of the second diaphragm 86".

[0089] The design in the present invention is mainly to dilute the accumulated liquid led out by the first drainage pipe 4. The diluted liquid is basically not blocked on the second drainage pipe 5, and the anti-blocking of the second drainage pipe 5 can be achieved. In this device, there is also the first drainage pipe 4. The length of the first drainage pipe 4 is short, and the situation of blockage is less. In addition, in actual application, if the first drainage pipe 4 is not blocked and the air pressure is normal, the water in the water inlet pipe 3 is injected into the negative pressure pump chamber 8 at a certain ratio. If the water consumption exceeds the normal unit consumption level at a certain time period, it is very likely that the first drainage pipe 4 is blocked and the first drainage pipe 4 needs to be replaced. In order to detect the water consumption, a liquid level gauge 11 can be provided in the water supply tank 6.

[0090] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims

1. A pumping and water-mixing drainage device for pancreatic cancer surgery, characterized in that: The invention comprises a negative pressure pump cabin (8), wherein a liquid inlet (1) and a liquid outlet (2) are arranged on the negative pressure pump cabin (8), wherein the liquid inlet (1) is connected to a water inlet pipe (3) and a first drainage pipe (4), and the liquid outlet (2) is connected to a second drainage pipe (5), wherein an end of the water inlet pipe (3) is connected to a water supply tank (6), and an end of the second drainage pipe (5) is connected to a liquid storage tank (10); A symmetrical first flow chamber (81) and a second flow chamber (82) are formed in the negative pressure pump chamber (8); a first pipe chamber (83) and a second pipe chamber (84) are respectively connected between the first flow chamber (81) and the second flow chamber (82); the liquid outlet (2) is arranged on the first pipe chamber (83); the liquid inlet (1) is arranged on the second pipe chamber (84); a first diaphragm (85) is arranged on the inner wall of the first flow chamber (81) close to the inner wall of the second flow chamber (82); and a second diaphragm (86) is arranged on the inner wall of the second flow chamber (82) close to the inner wall of the first flow chamber (81); A driving cabin (87) is provided between the first flow chamber (81) and the second flow chamber (82), and a displacement driving member (9) is provided in the driving cabin (87), and the ends of the displacement driving member (9) are connected to the first diaphragm (85) and the second diaphragm (86), and the displacement driving member (9) can reciprocate along the connection line direction of the first flow chamber (81) and the second flow chamber (82), so as to pull the second diaphragm (86) when pushing the first diaphragm (85) into the first flow chamber (81), and pull the first diaphragm (85) when pushing the second diaphragm (86) into the second flow chamber (82); wherein, when the first diaphragm (85) is pushed, the liquid in the first flow chamber (81) is squeezed into the first tube chamber (83) and flows out from the liquid outlet (2); the second diaphragm (86) is pulled so that a negative pressure is formed in the second flow chamber (82), so as to promote part of the liquid in the first tube chamber (83) to enter the second flow chamber (82); when the second diaphragm (86) is pushed, the liquid in the second flow chamber (82) is squeezed into the second tube chamber (84) and merges with the liquid flowing in from the liquid inlet (1); the first diaphragm (85) is pulled so that a negative pressure is formed in the first flow chamber (81), so as to promote the liquid in the second tube chamber (84) to enter the first flow chamber (81); A one-way valve structure (7) is provided at the connection between the first flow chamber (81), the second flow chamber (82) and the first pipe chamber (83), the second pipe chamber (84).

2. The water-pumping hybrid drainage device for pancreatic cancer surgery according to claim 1, characterized in that: The displacement amount of the reciprocating motion of the first diaphragm (85) is greater than the displacement amount of the reciprocating motion of the second diaphragm (86).

3. The water-pumping hybrid drainage device for pancreatic cancer surgery according to claim 1, characterized in that: The first tube cabin (83) and the second tube cabin (84) are symmetrical to each other; The first pipe cabin (83) comprises a first vertical pipe section (831), a first horizontal pipe section (832), and a second vertical pipe section (833) which are connected in sequence; The second pipe cabin (84) comprises a third vertical pipe section (841), a second horizontal pipe section (842), and a fourth vertical pipe section (843) which are connected in sequence.

4. The water-pumping hybrid drainage device for pancreatic cancer surgery according to claim 3, characterized in that: The first flow chamber (81) is provided with a first upper conduit (88) opposite to the first pipe chamber (83), the first flow chamber (81) is provided with a first lower conduit (89) opposite to the second pipe chamber (84), the first upper conduit (88) is butt-jointed with the first vertical pipe section (831), and the first lower conduit (89) is butt-jointed with the third vertical pipe section (841); The second flow chamber (82) is provided with a second upper conduit (810) opposite to the first tube chamber (83), and the second flow chamber (82) is provided with a second lower conduit (811) opposite to the second tube chamber (84), the second upper conduit (810) is connected to the second vertical tube section (833), and the second lower conduit (811) is connected to the fourth vertical tube section (843).

5. The water-pumping hybrid drainage device for pancreatic cancer surgery according to claim 4, characterized in that: The one-way valve structure (7) comprises a first valve ring (71) arranged in the first upper conduit (88), a first baffle (72) arranged in the first vertical pipe section (831), a second valve ring (73) arranged in the third vertical pipe section (841), a second baffle (74) arranged in the first lower conduit (89), a third valve ring (75) arranged in the second vertical pipe section (833), a third baffle (76) arranged in the second upper conduit (810), a fourth valve ring (77) arranged in the second lower conduit (811), and a fourth baffle (78) arranged in the fourth vertical pipe section (843); A first valve ball (79) is arranged between the first valve ring (71) and the first baffle (72), and the outer wall of the first valve ball (79) can completely seal the first valve ring (71); a second valve ball (710) is arranged between the second valve ring (73) and the second baffle (74), and the outer wall of the second valve ball (710) can completely seal the second valve ring (73); a third valve ball (711) is arranged between the third valve ring (75) and the third baffle (76), and the outer wall of the third valve ball (711) can completely seal the third valve ring (75); a fourth valve ball (712) is arranged between the fourth valve ring (77) and the fourth baffle (78), and the outer wall of the fourth valve ball (712) can completely seal the fourth valve ring (77).

6. The water-pumping hybrid drainage device for pancreatic cancer surgery according to claim 5, characterized in that: The first valve ball (79), the second valve ball (710), the third valve ball (711) and the fourth valve ball (712) have the same diameter; wherein the distances between the first valve ring (71) and the first baffle (72), between the second valve ring (73) and the second baffle (74), between the third valve ring (75) and the third baffle (76), and between the fourth valve ring (77) and the fourth baffle (78) are all greater than the diameter of the first valve ball (79); The radius of the first valve ball (79) is smaller than the inner diameters of the first vertical pipe section (831), the second vertical pipe section (833), the third vertical pipe section (841), the fourth vertical pipe section (843), the first upper conduit (88), the first lower conduit (89), the second upper conduit (810), and the second lower conduit (811).

7. The water-pumping hybrid drainage device for pancreatic cancer surgery according to claim 2, characterized in that: The displacement driving member (9) comprises a first movable frame (91) arranged in the driving cabin (87), a first connecting rod (92) connected to the side of the first movable frame (91), and a first supporting plate (93) connected to the end of the first connecting rod (92); A second movable frame (94) is arranged in the driving cabin (87), a second connecting rod (95) is connected to a side of the second movable frame (94), and a second supporting plate (96) is connected to an end of the second connecting rod (95); The first diaphragm (85) is connected to the surface of the first support plate (93), and the second diaphragm (86) is connected to the surface of the second support plate (96).

8. The water-pumping hybrid drainage device for pancreatic cancer surgery according to claim 7, characterized in that: A plurality of first meshing teeth (97) are arranged at upper and lower opposite positions of the inner wall of the first movable frame (91); a first driving wheel (98) is arranged inside the first movable frame (91); a plurality of first gear teeth (99) are arranged outside the first driving wheel (98); and the first gear teeth (99) can mesh with the first meshing teeth (97); A plurality of second meshing teeth (910) are arranged at upper and lower opposite positions of the inner wall of the second movable frame (94); a second driving wheel (911) is arranged inside the second movable frame (94); a plurality of second gear teeth (912) are arranged outside the second driving wheel (911); and the second gear teeth (912) can mesh with the second meshing teeth (910); An installation cabin (913) is installed outside the driving cabin (87), a driving motor is arranged inside the installation cabin (913), a driving end of the driving motor is connected to a driving shaft (914), and the first driving wheel (98) and the second driving wheel (911) are both installed on the driving shaft (914).

9. The water-pumping hybrid drainage device for pancreatic cancer surgery according to claim 8, characterized in that: The size of the first movable frame (91) is larger than the size of the second movable frame (94), and the size ratio of the first movable frame (91) to the second movable frame (94), the size ratio of the first driving wheel (98) to the second driving wheel (911), and the size ratio of the first gear teeth (99) to the second gear teeth (912) are all consistent.

10. The pumping and mixing type drainage device for pancreatic cancer surgery according to claim 1, characterized in that: A liquid level meter (11) is arranged in the water supply tank (6).

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