A drainage device for medical clinical use

Abstract

The present invention discloses a drainage device for medical clinical use, including an adsorption drainage unit, an adsorption control unit and a drainage tube. The adsorption drainage unit includes an anti-seepage cover member, a positive pressure tube and a negative pressure tube. A positive pressure cavity with an open bottom is provided in the middle of the anti-seepage cover member. An annular negative pressure cavity with an open bottom is provided in the anti-seepage cover member outside the positive pressure cavity, and the negative pressure cavity is coaxially arranged with the positive pressure cavity. The structure of the present invention is unique. It can not only effectively solve the problem that the existing drainage tube is extremely easy to fall off when fixed with adhesive tape, but also effectively solve the problem that when the existing drainage tube is fixed with a bandage, the bandage winds around the limb and compresses blood vessels, hindering the normal blood circulation of the limb.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical clinical treatment devices, and particularly relates to a drainage device for medical clinical use. Background Art

[0002] In clinical treatment, drainage is often required to drain the liquid in the patient's body. Drainage is a process and method of extracting liquid from a body cavity by attraction or gravity, and is often used in medical clinical treatment and nursing. During clinical drainage, after the puncture end of the drainage tube is placed into the drainage site of the patient, the other end of the drainage tube is connected to the drainage bag, so that the liquid in the wound cavity or cavity can be drained during the treatment and recovery stage and flow into the drainage bag for collection, preventing infection and affecting the normal recovery of the patient.

[0003] During the drainage treatment process, it is necessary to fix the drainage tube to prevent the drainage tube from detaching from the affected area during the drainage treatment and causing damage to the patient due to repeated insertion. There are two existing fixing methods for the puncture end of the drainage tube. One is to use medical tape to stick the drainage tube to the patient's skin, and the other is to set a ring-shaped bonding seat on the puncture end of the drainage tube, and tie the ring-shaped bonding seat around the affected limb with a bandage. When using the first method to fix the drainage tube, it is easy to cause allergic reactions in patients, and the fixation is unreliable, and the drainage tube is extremely easy to fall off from the drainage site. When using the second method to fix the drainage tube, although the bandage can fix the drainage tube to the limb at the drainage site through the ring-shaped bonding seat, the bandage wound around the limb will compress the limb blood vessels and hinder the normal blood circulation of the limb. Prolonged compression is likely to cause ischemia at the distal end of the limb and cause secondary harm to the patient, affecting the speed of the patient's treatment and recovery. Summary of the Invention

[0004] Aiming at the defects and problems existing in the existing clinical drainage treatment, the present invention provides a drainage device for medical clinical use. The structure of the device is unique, and it can not only effectively solve the problem that the existing drainage tube is extremely easy to fall off when fixed with tape, but also effectively solve the problem that when the existing drainage tube is fixed with a bandage, the bandage wound around the limb compresses the blood vessels and hinders the normal blood circulation of the limb.

[0005] The solution adopted by the present invention to solve its technical problems is as follows: A drainage device for medical clinical use, comprising an adsorption drainage unit, an adsorption control unit and a drainage tube. The adsorption drainage unit includes an anti-seepage cover member, a positive pressure tube and a negative pressure tube. A positive pressure chamber with an open bottom is provided in the middle of the anti-seepage cover member. A ring-shaped negative pressure chamber with an open bottom is provided in the anti-seepage cover member outside the positive pressure chamber, and the negative pressure chamber and the positive pressure chamber are coaxially arranged; A guide column is vertically provided in the positive pressure chamber. A drainage tube hole penetrating the anti-seepage cover member is vertically provided in the middle of the guide column. The drainage tube is slidably and sealingly sleeved in the drainage tube hole. The puncture end of the drainage tube extends downward out of the guide column and is sealingly sleeved with a ring-shaped pressing plate. The ring-shaped pressing plate can slide axially along the drainage tube and be locked; The other end of the drainage tube is connected with a liquid storage mechanism; The adsorption control unit includes a control bottle, a piston and a negative pressure top spring. A control chamber is axially provided in the control bottle. The piston is slidably installed axially in the control chamber and divides the control chamber axially and sealingly into an upper control chamber and a lower control chamber. The negative pressure top spring is fitted and installed in the upper control chamber. High-pressure gas is injected into the lower control chamber. In the unused state, the high-pressure gas will push the piston upward to squeeze the negative pressure top spring (to compress it); The upper control chamber is movably communicated with the negative pressure chamber through the negative pressure tube. The lower control chamber is movably communicated with the positive pressure chamber through the positive pressure tube, and a stop valve is provided on the positive pressure tube.

[0006] The anti-seepage cover member includes a top cover, an outer partition ring and an inner partition ring. The outer partition ring is coaxially fixed to the bottom surface of the top cover, and the outer ring surface of the outer partition ring is flush with the outer surface of the top cover. The inner partition ring is coaxially and spacedly fixed to the bottom of the top cover inside the outer partition ring. The space between the outer partition ring and the inner partition ring is the negative pressure chamber, and the space inside the inner partition ring is the positive pressure chamber. The guide column is coaxially arranged with the top cover, and the top end of the guide column is fixedly connected to the bottom surface of the top cover.

[0007] The length dimension of the guide column is a, the thickness dimension of the ring-shaped pressing plate is b, and the height dimension of the inner partition ring is c, where a + b ≤ c.

[0008] The ring-shaped pressing plate includes a ring-shaped pressing plate body and a limiting sleeve. The pressing plate body is sealingly and slidably sleeved on the puncture end of the drainage tube below the guide column. The limiting sleeve is slidably sleeved on the drainage tube above the pressing plate body and is vertically connected to the lower pressing plate body; A threaded hole communicating with the inside of the limiting sleeve is radially provided on the circumferential side wall of one side of the limiting sleeve, and a locking bolt is fixed.

[0009] An activity connection component is provided on the anti-seepage cover member (for connecting the positive pressure tube and the negative pressure tube); The activity connection component includes a positive pressure quick connector and a negative pressure quick connector. The positive pressure tube is communicated with the positive pressure chamber through the positive pressure quick connector; The negative pressure tube is communicated with the negative pressure chamber through the negative pressure quick connector.

[0010] On the upper end surface of the anti-seepage cover member, a positive pressure threaded hole communicating with the positive pressure chamber and a negative pressure threaded hole communicating with the negative pressure chamber are vertically opened. The positive pressure quick connector and the negative pressure quick connector are respectively and fittingly installed in the positive pressure threaded hole and the negative pressure threaded hole.

[0011] On the top of the control bottle, a negative pressure suction hole communicating with the upper control chamber is vertically opened. One end of a negative pressure pipe is connected to the negative pressure suction hole, and the other end of the negative pressure pipe is movably communicated with the negative pressure chamber; on the bottom of the control bottle, a positive pressure exhaust hole communicating with the lower control chamber is vertically opened. The stop valve is installed on the positive pressure exhaust hole, and the positive pressure pipe is communicated with the lower control chamber through the stop valve.

[0012] It further includes a pressurizing mechanism. The pressurizing mechanism includes a one-way intake valve and a stamping assembly. The one-way intake valve is fittingly installed on the control bottle, and the exhaust end of the one-way intake valve is communicated with the lower control chamber. The intake port of the one-way intake valve is movably connected to the pressurizing assembly. The pressurizing assembly can inject high-pressure gas into the lower control chamber at a constant pressure through the one-way intake valve.

[0013] The pressurizing assembly includes a pressurizing pump, an exhaust pipe and a pressurizing controller. At the bottom of the lower chamber below the piston, an air intake hole communicating with the outside is provided. The one-way intake valve is fittingly installed in the air intake hole. The exhaust end of the pressurizing pump is communicated with the one-way intake valve through the exhaust pipe; the exhaust pipe is movably connected to the one-way intake valve, and a pressure sensor is provided in the exhaust pipe. The pressure sensor is communicatively connected to the pressurizing controller, and the pressurizing controller is control-connected to the pressurizing pump.

[0014] On the top end of the anti-seepage cover member, a pressure relief control communicating with the negative pressure chamber is vertically opened, and a pressure relief valve is fittingly installed.

[0015] The beneficial effects of the present invention: A drainage device for medical clinical use provided by the present invention has a unique structure, including an adsorption drainage unit, an adsorption control unit and a drainage pipe. The adsorption drainage unit includes an anti-seepage cover member. A positive pressure chamber and a negative pressure chamber are provided inside the anti-seepage cover member. A guide post is vertically provided in the positive pressure chamber. In the middle of the guide post, a drainage pipe hole penetrating through the anti-seepage cover member is vertically provided. The drainage pipe is slidably and sealingly sleeved in the drainage pipe hole, and the puncture end of the drainage pipe extends downward out of the guide post and is sealingly sleeved with an annular pressing plate. When the puncture end of the drainage pipe is placed into the drainage part, the position of the annular pressing plate can be adjusted according to the depth of the drainage part and fixed. Thus, after the puncture end of the drainage pipe is placed into the drainage part, the pressing plate body of the annular pressing plate will be in contact with the skin, which can avoid the problems of the drainage pipe being placed too deep or too shallow.

[0016] The adsorption control unit includes a control bottle, a piston, and a negative pressure spring. An axial control cavity is provided inside the control bottle. The piston is slidably installed axially inside the control cavity. The negative pressure spring is installed in the upper control cavity in a matching manner. High-pressure gas is injected into the lower control cavity. In the unused state, the high-pressure gas will push the piston upward to compress the negative pressure spring. The upper control cavity is movably connected to the negative pressure cavity through a negative pressure pipe, and the lower control cavity is movably connected to the positive pressure cavity through a positive pressure pipe. During use, the anti-seepage cover is fixed on the skin by the negative pressure generated by the movement of the piston when the control bottle discharges high-pressure gas, thereby pressing and fixing the drainage tube on the skin. There is no need to connect a negative pressure pump, which is convenient to use. When the skin in the positive pressure cavity expands or contracts with the patient's breathing, the high pressure in the positive pressure cavity will still press the annular pressing plate on the drainage tube to contact the skin together, thereby enhancing the fixing strength of the drainage tube and preventing the drainage tube from falling off, effectively solving the problem that the existing drainage tube is easily detached when fixed with adhesive tape. And because the anti-seepage cover is adsorbed on the skin by the negative pressure generated by driving the piston to slide by the negative pressure spring, it not only reduces the contact area between the anti-seepage cover and the skin on the premise of ensuring the fixing strength, effectively solving the problem that when the existing drainage tube is fixed with a bandage, the bandage wraps around the limb and compresses blood vessels, hindering the normal blood circulation of the limb, but also can ensure that the positive pressure cavity is in a sealed state during the adsorption state, preventing the gas in the positive pressure cavity from leaking, and further improving the fixing stability of the drainage tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic three-dimensional structure diagram of the present invention.

[0018] Figure 2 is one of the schematic three-dimensional structure diagrams of the anti-seepage cover of the present invention.

[0019] Figure 3 is a schematic diagram of the position where the movable connection component is arranged on the anti-seepage cover of the present invention.

[0020] Figure 4 is a schematic diagram of the installation position of the guide post inside the anti-seepage cover of the present invention.

[0021] Figure 5 is a schematic diagram of the internal structure of the anti-seepage cover of the present invention.

[0022] Figure 6 is one of the schematic diagrams of the installation of the drainage tube of the present invention.

[0023] Figure 7 is Figure 6 the enlarged schematic diagram of the structure at A in

[0024] Figure 8 is one of the schematic diagrams of the air circulation state inside the anti-seepage cover under the use state of the present invention.

[0025] Figure 9It is the second schematic diagram of the air circulation state inside the anti-seepage cover during the use of the present invention.

[0026] Figure 10 It is the schematic diagram of the internal structure of the control bottle of the present invention.

[0027] Figure 11 It is the schematic diagram of the exhaust process of the control bottle of the present invention.

[0028] Figure 12 It is the schematic diagram of the installation position of the one-way valve of the pressurizing mechanism of the present invention.

[0029] Figure 13 It is the structural frame view of the pressurizing mechanism of the present invention.

[0030] Figure 14 It is the second schematic diagram of the installation of the drainage pipe of the present invention.

[0031] Figure 15 It is the schematic diagram of the structure of the pre-adjustment component of the present invention.

[0032] Figure 16 It is the schematic diagram of the setting position of the auxiliary adsorption cover of the present invention.

[0033] Figure 17 It is the schematic diagram of the structure of the alternating control mechanism of the present invention.

[0034] Figure 18 It is the connection frame view of the adsorption controller of the present invention.

[0035] Figure 19 It is the schematic diagram of the connection relationship between the auxiliary adsorption cover and the anti-seepage cover of the present invention.

[0036] Figure 20 It is the schematic diagram of the structure of the telescopic rod of the present invention.

[0037] Reference numerals in the figure: 1 is a drainage tube, 2 is an adsorption drainage unit, 21 is an anti-seepage cover member, 211 is a top cover, 212 is an outer spacer ring, 213 is an inner spacer ring, 22 is a positive pressure tube, 23 is a negative pressure tube, 231 is a front section tube, 232 is a rear section tube, 24 is a positive pressure chamber, 25 is a negative pressure chamber, 26 is a positive pressure threaded hole, 27 is a negative pressure threaded hole, 3 is an adsorption control unit, 31 is a control bottle, 311 is a negative pressure suction hole, 312 is a positive pressure exhaust hole, 32 is a piston, 33 is a negative pressure top spring, 34 is a control chamber, 341 is an upper control chamber, 342 is a lower control chamber, 35 is a stop valve, 8 is a one-way intake valve, 37 is a pressing plate, 38 is an adjusting bolt, 4 is a guide post, 41 is a drainage tube hole, 5 is an annular pressing plate, 51 is a pressing plate body, 52 is a limit sleeve, 53 is a locking bolt, 7 is a movable connection assembly, 71 is a positive pressure quick connector, 72 is a negative pressure quick connector, 81 is a secondary adsorption cover, 82 is an adjusting cylinder, 821 is a cylinder body, 822 is a rectangular adjusting chamber, 823 is an adjusting lead screw, 824 is a piston plate, 825 is an adsorption chamber, 83 is a three-way solenoid valve, 84 is a negative pressure tube b, 85 is a conversion motor, 86 is a connecting tube a, 87 is a connecting tube b, 88 is a pressure sensor a, 89 is a pressure sensor b, 91 is a telescopic rod, 92 is a hinge seat, 93 is a connecting rod, 94 is an adjusting rod, 95 is a threaded rod. Detailed implementation manners

[0038] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0039] Embodiment 1

[0040] This embodiment provides a drainage device for medical clinical use, as Figures 1-6 shown, including an adsorption drainage unit 2, an adsorption control unit 3 and a drainage tube 1. The adsorption drainage unit 2 includes an anti-seepage cover member 21, a positive pressure tube 22 and a negative pressure tube 23. A positive pressure chamber 24 with an open bottom is provided in the middle of the anti-seepage cover member 21. An annular negative pressure chamber 25 with an open bottom is provided in the anti-seepage cover member outside the positive pressure chamber 24, and the negative pressure chamber 25 is coaxially arranged with the positive pressure chamber 24. Specifically:

[0041] As Figure 2 and Figure 5 shown, the anti-seepage cover member 21 includes a top cover 211, an outer spacer ring 212 and an inner spacer ring 213. The outer spacer ring 212 is coaxially fixed to the bottom surface of the top cover 211. The outer ring surface of the outer spacer ring 212 is flush with the outer ring surface of the top cover, and an arc chamfer is provided at the connection between the outer spacer ring and the top cover; the inner spacer ring 213 is coaxially and spacedly fixed to the bottom of the top cover inside the outer spacer ring. The space between the outer spacer ring and the inner spacer ring is the negative pressure chamber, and the space inside the inner spacer ring is the positive pressure chamber.

[0042] Furthermore, there are various manufacturing methods for the anti-seepage cover member. For example, the anti-seepage cover member is an injection molded part, and the top cover, the outer spacer ring and the inner spacer ring are of an integral structure.

[0043] A guide post 4 is vertically arranged in the positive pressure chamber 24. A drainage tube hole 41 penetrating the anti-seepage cover member is vertically arranged in the middle of the guide post 4. The drainage tube 1 is slidably and sealingly sleeved in the drainage tube hole. The puncture end of the drainage tube extends downward out of the guide post and is sealingly sleeved with an annular pressing plate 5. The annular pressing plate 5 can slide axially along the drainage tube and be locked. Specifically:

[0044] As Figure 5 shown, the top end of the guide post 4 is fixedly connected to the bottom surface of the top cover 211. The drainage tube hole of the guide post 4 penetrates the top cover 211 upward. A plurality of annular sealing grooves are arranged at intervals along the axial direction on the inner hole wall of the drainage tube hole of the guide post. Sealing rings are fitted in the annular sealing grooves. The sealing rings protrude out of the annular sealing grooves. When the drainage tube is inserted into the drainage tube hole in a matching manner, the sealing rings will be deformed by the extrusion of the drainage tube, thereby increasing the sealing strength between the drainage tube and the guide post.

[0045] Furthermore, there are various connection methods between the guide post and the top cover. For example, the guide post and the top cover are of an integral structure; the length dimension of the guide post is a, the thickness dimension of the annular pressing plate is b, and the height dimension of the inner spacer ring is c, where a + b < c.

[0046] The annular pressing plate 5 includes an annular pressing plate body 51 and a limiting sleeve 52. The pressing plate body 51 is sealingly and slidably sleeved on the puncture end of the drainage tube below the guide post. The sealing and sliding sleeving method of the pressing plate body 51 is the same as that of the guide post, which will not be elaborated here; the limiting sleeve 52 is slidably sleeved on the drainage tube 1 above the pressing plate body 51 and is vertically connected to the lower pressing plate body; a threaded hole communicating with the inside of the limiting sleeve is arranged along the radial direction on the circumferential side wall of one side of the limiting sleeve, and a locking bolt 53 is fixed. When the locking bolt is tightened, the top end of the locking bolt 53 will penetrate into the limiting sleeve and abut against the outer wall of the drainage tube 1 inside the limiting sleeve, thereby fixing the position of the annular pressing plate.

[0047] The other end of the drainage tube 1 is connected with a liquid storage mechanism for collecting the drained liquid. There are various types of liquid storage mechanisms. For example: the liquid storage mechanism is an existing liquid storage bag or a negative pressure liquid extraction mechanism.

[0048] When the puncture end of the drainage tube 1 is placed into the drainage part, the position of the annular pressing plate can be adjusted according to the depth of the drainage part and fixed. Thus, after the puncture end of the drainage tube is placed into the drainage part, the pressing plate body 51 of the annular pressing plate 5 will abut against the skin, which can avoid the problems of the drainage tube being inserted too deep or too shallow.

[0049] The adsorption control unit 3 includes a control bottle 31, a piston 32, and a negative pressure top spring 33. An axial control cavity 34 is provided in the control bottle 31. The piston 32 is slidably installed in the control cavity 34 along the axial direction, and divides the control cavity 34 into an upper control cavity 341 and a lower control cavity 342 by axial sealing. The negative pressure top spring 33 is fitted in the upper control cavity 341. The lower control cavity is filled with high-pressure gas. In the unused state, the high-pressure gas will push the piston upward to squeeze the negative pressure top spring, compressing the negative pressure top spring. The upper control cavity 341 is movably communicated with the negative pressure cavity through a negative pressure pipe 23. The lower control cavity is movably communicated with the positive pressure cavity through a positive pressure pipe, and a check valve is provided on the positive pressure pipe. Specifically:

[0050] As Figure 10 shown, a negative pressure suction hole 311 communicating with the upper control cavity 341 is vertically opened at the top of the control bottle 31. One end of the negative pressure pipe 23 is connected to the negative pressure suction hole 311, and the other end of the negative pressure pipe 23 is movably communicated with the negative pressure cavity. A positive pressure exhaust hole 312 communicating with the lower control cavity is vertically opened at the bottom of the control bottle 31. One end of the positive pressure pipe 22 is connected to the positive pressure exhaust hole, and the other end is connected to the positive pressure cavity. There are various ways to set the check valve 35. For example, the check valve 35 is fitted on the positive pressure exhaust hole, and the positive pressure pipe is communicated with the lower control cavity through the check valve.

[0051] There are various ways for the negative pressure pipe 23 and the positive pressure pipe to be movably connected to the anti-seepage cover member. For example: As Figure 3 and Figure 4 shown, an activity connection assembly 7 is provided on the anti-seepage cover member 21 for connecting the positive pressure pipe and the negative pressure pipe. The activity connection assembly 7 includes a positive pressure quick connector 71 and a negative pressure quick connector 72. A positive pressure threaded hole 26 communicating with the positive pressure cavity and a negative pressure threaded hole 27 communicating with the negative pressure cavity are vertically opened on the upper end surface of the anti-seepage cover member 21. The positive pressure quick connector and the negative pressure quick connector are respectively fitted in the positive pressure threaded hole and the negative pressure threaded hole. The positive pressure pipe is communicated with the positive pressure cavity through the positive pressure quick connector; the negative pressure pipe is communicated with the negative pressure cavity through the negative pressure quick connector.

[0052] When the device provided in this embodiment is in use, first assemble and connect the device provided in this embodiment, and disconnect the positive pressure pipe from the anti-seepage cover member; then adjust the position of the annular pressing plate according to the depth of the drainage part and lock it, so that the puncture end of the drainage pipe can be accurately placed into the drainage part quickly. After the annular pressing plate touches the skin after being placed, push the anti-seepage cover member to slide along the drainage pipe and contact the skin outside the affected area. At this time, the openings of the positive pressure cavity and the negative pressure cavity are blocked by the skin; As Figure 8 shown, then open the check valve to slowly discharge the high-pressure gas in the lower control cavity. During this process, as Figure 11As shown, since the high-pressure gas that pushes the piston in the lower control chamber compresses the negative-pressure top spring is discharged outward, the compressed negative-pressure top spring will slowly recover as it slowly loses the pushing force, thereby pushing the piston to move downward slowly. During this process, the upper control chamber will suck the air in the negative-pressure chamber to generate negative pressure, causing the anti-seepage cover to be adsorbed on the patient's skin. Then, the stop valve is closed. After connecting the positive-pressure tube to the anti-seepage cover, the stop valve is opened to connect the positive-pressure chamber with the lower control chamber. The remaining high-pressure gas in the lower control chamber will enter the positive-pressure chamber, increasing the pressure value in the positive-pressure chamber. Since the pressing plate body of the annular pressing plate touches the patient's skin, the drainage tube insertion hole on the patient's skin is blocked. Therefore, the high-pressure gas in the positive-pressure chamber will squeeze the annular pressing plate, making it touch the skin tightly. And because the annular pressing plate is pressed by the high-pressure gas in the positive-pressure chamber to touch the skin, when the skin in the positive-pressure chamber expands or contracts with the patient's breathing, the annular pressing plate will still be driven by the high-pressure gas to touch the skin, enhancing the fixing strength of the drainage tube; as Figure 9 shown, when the drainage tube is pulled due to external force caused by the patient's movement, separating the annular pressing plate in the positive-pressure chamber from the skin, since the pressure in the positive-pressure chamber is greater than the external pressure, it will press the drainage tube insertion hole, preventing the liquid at the drainage site from flowing out through the gap between the drainage tube and the drainage tube insertion hole.

[0053] Compared with the existing drainage tube fixing method, in this embodiment, the drainage tube is fixed by using the air pressure to press the drainage tube against the skin through the anti-seepage cover adsorbed on the skin. When the skin in the positive-pressure chamber expands or contracts with the patient's breathing, the high pressure in the positive-pressure chamber will still press the annular pressing plate on the drainage tube to touch the skin, enabling the annular pressing plate to adapt to the expansion and contraction of the patient's skin, thereby enhancing the fixing strength of the drainage tube and preventing the drainage tube from falling off, effectively solving the problem that the existing drainage tube is extremely likely to fall off when fixed with tape; and because the anti-seepage cover is adsorbed on the skin by the negative pressure generated by driving the piston to slide by the active negative-pressure top spring, not only is the contact area between the anti-seepage cover and the skin reduced on the premise of ensuring the fixing strength, effectively solving the problem that when the existing drainage tube is fixed with a bandage, the bandage wraps around the limb and compresses the blood vessels, hindering the normal blood circulation of the limb, but also it can ensure that the positive-pressure chamber is in a sealed state in the adsorbed state, preventing the gas in the positive-pressure chamber from leaking, further improving the fixing stability of the drainage tube.

[0054] Embodiment 2

[0055] In the adsorption control unit of the medical clinical drainage device provided in Embodiment 1, the control bottle is a disposable component and cannot be reused.

[0056] In view of the above problems, compared with Embodiment 1, the medical clinical drainage device provided in this embodiment is different in that, as Figures 12-13As shown, the medical clinical drainage device provided in this embodiment further includes a pressurizing mechanism. The pressurizing mechanism includes a one-way intake valve and a stamping assembly. The one-way intake valve 36 is fitted on the control bottle, and the exhaust end of the one-way intake valve communicates with the lower control cavity. The intake port of the one-way intake valve is movably connected to the pressurizing assembly. The pressurizing assembly can inject high-pressure gas into the lower control cavity at a constant pressure through the one-way intake valve. Specifically:

[0057] The pressurizing assembly includes a pressurizing pump, an exhaust pipe, and a pressurizing controller. An air inlet communicating with the outside is provided at the bottom of the lower chamber below the piston. The one-way intake valve is fitted in the air inlet. The exhaust end of the pressurizing pump communicates with the one-way intake valve through the exhaust pipe. The exhaust pipe is movably connected to the one-way intake valve, and a pressure sensor is provided in the exhaust pipe. The pressure sensor is communicatively connected to the pressurizing controller, and the pressurizing controller is control-connected to the pressurizing pump. During use, the pressurizing controller controls the opening and closing of the pressurizing pump through the pressure signal transmitted by the pressure sensor, so as to achieve constant-pressure charging of the lower control cavity. In actual use, after pressurizing the lower control cavity in the control bottle through the pressurizing assembly, the adsorption control unit of the device can be reused, and only the adsorption drainage unit and the drainage tube need to be replaced, thus effectively reducing the cost of drainage treatment.

[0058] Embodiment 3

[0059] The difference between Embodiment 3 and Embodiment 2 is that, as Figure 14 shown, the length dimension of the guide post is a, the thickness dimension of the annular pressing plate is b, and the height dimension of the inner spacer ring is c, where a + b = c. Thus, when the anti-seepage cover 21 adsorbs on the patient's skin, the guide post will press the annular pressing plate downward to contact the patient's skin, thereby using the negative pressure in the negative pressure cavity to assist the high pressure in the positive pressure cavity to press the annular pressing plate against the patient's skin, further improving the fixing strength of the drainage tube.

[0060] Embodiment 3

[0061] The difference between Embodiment 3 and Embodiment 2 is that a pressure relief hole communicating with the negative pressure cavity is provided on the anti-seepage cover and a pressure relief valve is fitted. After the patient's drainage treatment is completed, the negative pressure in the negative pressure cavity can be discharged through the pressure relief valve, so that the anti-seepage cover loses the adsorption force with the patient's skin, thus facilitating the disassembly of the anti-seepage cover.

[0062] Embodiment 4

[0063] The difference between Embodiment 4 and Embodiment 3 is that an observation window is axially opened on the control bottle and sealed with a sealing glass. During use, the position of the piston in the control bottle can be directly observed through the observation window, thus facilitating the precise control of the adsorption control unit. Further, the anti-seepage cover is made of a transparent material, which is convenient for observing the position of the annular pressing plate on the puncture end of the drainage tube.

[0064] Example 5

[0065] The difference between Example 5 and Example 4 is that a pre-adjustment component is provided inside the control bottle.

[0066] As Figure 15 shown, a pre-adjustment component is provided inside the control bottle 31. The pre-adjustment component includes a pressing plate 37 and an adjusting bolt 38. The pressing plate 37 is slidably mounted along the axial direction in the control cavity above the piston, and the negative pressure top spring 33 is located between the pressing plate and the piston. The pressing plate is provided with a hollow for air circulation. A bolt hole communicating with the inside is vertically opened at the top of the control bottle, and the adjusting bolt is fitted and installed in the bolt hole. The bottom of the adjusting bolt extends vertically into the control bottle and abuts against the top of the pressing plate. When the length of the adjusting bolt extending into the control screen is rotated, the distance between the pressing plate and the top wall of the control cavity will be adjusted, and the compression degree of the negative pressure top spring will be adjusted. Thus, during use, the negative pressure in the negative pressure cavity is generated by the negative pressure top spring restoring and pushing the piston. During use, the compression degree of the negative pressure top spring can be adjusted according to the patient's body feeling through the adjusting bolt to achieve the adjustment of the negative pressure suction force.

[0067] Further, pressure gauges are connected to both the upper control cavity and the lower control cavity. Through the pressure gauges, the pressure values of each chamber can be directly observed, which is convenient for the medical staff to operate.

[0068] Further, during actual use, an electric push rod can be used instead of the adjusting bolt and connected to a controller. The controller is connected to the pressure gauges. The controller can intelligently control the telescoping of the electric push rod according to the pressure values in the upper control cavity and the lower control cavity, so as to automatically adjust the negative pressure suction force.

[0069] Example 6

[0070] The difference between Example 6 and Example 5 is that a secondary adsorption unit is further included.

[0071] As Figures 16-18 shown, the secondary adsorption unit includes an alternating control mechanism and a secondary adsorption cover 81 with an internal cavity. The bottom of the cavity of the secondary adsorption cover is provided with an opening. Three secondary adsorption covers 81 are evenly spaced along the circumference on the outside of the anti-seepage cover member 21, and the openings of the secondary adsorption covers are arranged downward. The internal cavities of the three secondary adsorption covers 81 are interconnected through a communicating pipe and connected to the alternating control mechanism. The alternating control mechanism is arranged on the negative pressure pipe and is used to control the switching of the adsorption positions of the skin.

[0072] As Figure 17As shown in the figure, the negative pressure pipe 23 includes a front section pipe 231 and a rear section pipe 232. The alternating control mechanism includes an adjusting cylinder 82, a three-way solenoid valve 83, an adsorption controller, a negative pressure pipe b84, a connecting pipe group, a sensor group, and a conversion motor 85. The adjusting cylinder 82 includes a cylinder block 821. A rectangular adjusting cavity 822 is transversely provided inside the cylinder block 821. An adjusting screw rod 823 is rotatably arranged along the axis inside the rectangular adjusting cavity 822. The left and right ends of the adjusting screw rod 823 are respectively rotatably fixed on the inner walls of the adjacent sides of the adjusting cavity. And the right end of the adjusting screw rod 823 extends outward from the adjusting cylinder 82 in a sealed manner and is in transmission connection with the conversion motor 85. When the conversion motor drives the adjusting screw rod to rotate, the adjusting screw rod will drive the piston plate to slide left and right along the rectangular adjusting cavity, thereby adjusting the sizes of the main adsorption cavity and the secondary adsorption cavity;

[0073] A piston plate 824 is fitted on the upper part of the adjusting screw rod 823 in the rectangular adjusting cavity 822. The piston plate 824 seals and divides the rectangular adjusting cavity into two adsorption cavities along the axis. The left adsorption cavity 825 of the piston plate 824 is communicated with the negative pressure cavity 25 through the front section pipe 231. The right adsorption cavity 825 of the piston plate 824 is communicated with the inner cavity of the secondary adsorption cover through the negative pressure pipe b84. And the two adsorption cavities 825 are respectively communicated with the first exhaust port and the second exhaust port of the three-way solenoid valve 83 through the connecting pipe group. The intake port of the three-way solenoid valve 83 is communicated with the upper control cavity 341 of the control bottle through the rear section pipe 232 of the negative pressure pipe; The connecting pipe group includes a connecting pipe a86 and a connecting pipe b87. The left adsorption cavity 825 of the piston plate 824 is communicated with the first exhaust port of the three-way solenoid valve through the connecting pipe a86. The right adsorption cavity 825 of the piston plate 824 is communicated with the second exhaust port of the three-way solenoid valve through the connecting pipe b87;

[0074] The sensor group includes a pressure sensor a88 and a pressure sensor b89. The pressure sensor a88 and the pressure sensor b89 are respectively arranged on the connecting pipe a86 and the connecting pipe b87 and are connected to the adsorption controller, and are used for transmitting the real-time pressure signals in the connecting pipe a and the connecting pipe b to the adsorption controller. The controller is connected to the conversion motor and the three-way solenoid valve to form an adsorption control system. After the stop valve is first opened, the adsorption controller will first control the opening and closing of the two exhaust ports of the three-way solenoid valve according to the preset pressure values of the two adsorption cavities, and then the control will control the two exhaust ports of the three-way solenoid valve to be alternately opened at intervals according to the set interval time. And during this process, the adsorption controller will control the conversion motor to drive the piston plate to move a certain distance towards the adsorption cavity communicated with the unopened exhaust port according to the negative pressure required for fixing the anti-seepage cover part;

[0075] During the use of the medical clinical drainage device provided in this embodiment, after pushing the anti-seepage cover member to slide along the drainage tube and contacting the skin outside the affected area, the open end at the lower end of the auxiliary adsorption cover is blocked by the skin synchronously. Then, the adsorption control system is turned on through the adsorption controller, and then the stop valve is opened. The adsorption controller will first control the opening and closing of the two exhaust ports of the three-way solenoid valve according to the preset pressure values of the two adsorption chambers, and suck the air in the negative pressure chamber and the cavity of the auxiliary adsorption cover through the regulating cylinder. After the air pressure in the negative pressure chamber and the cavity of the auxiliary adsorption cover reaches the preset pressure value of the adsorption chamber, the suction controller closes the two exhaust ports of the three-way solenoid valve. At this time, the pressure in the negative pressure chamber and the cavity of the auxiliary adsorption cover is less than the external atmospheric pressure, but the anti-seepage cover member cannot be reliably adsorbed on the skin. Then, the stop valve is closed. After connecting the positive pressure tube to the anti-seepage cover member and opening the stop valve, the adsorption controller will control the two exhaust ports of the three-way solenoid valve to open alternately at intervals according to the set interval time. During this process, the adsorption controller will control the conversion motor to drive the piston plate to move a fixed distance towards the adsorption chamber connected to the unopened exhaust port according to the negative pressure required for fixing the anti-seepage cover member, so that the volume of the adsorption chamber connected to the control tank increases, thereby increasing the negative pressure in the negative pressure chamber or the cavity of the auxiliary adsorption cover connected thereto, enabling the anti-seepage cover member to be reliably adsorbed on the skin. Compared with Embodiment 5, during the use of the medical clinical drainage device provided in this embodiment, the adsorption controller intermittently adjusts the pressure in the cavity of the auxiliary adsorption cover and the negative pressure chamber on the anti-seepage cover member, so that the anti-seepage cover member is alternately and reliably adsorbed on the patient's skin through the negative pressure chamber and the cavity inside the anti-seepage cover member, which can effectively prevent the problem of skin damage caused by continuous long-term negative pressure adsorption in a single area of the skin and resulting in congestion.

[0076] Embodiment 7

[0077] The difference between Embodiment 7 and Embodiment 6 is that a connection component is provided between the auxiliary adsorption cover and the anti-seepage cover member bracket, and the auxiliary adsorption cover is hinged to the anti-seepage cover member through the connection component, as Figure 19 and Figure 2 shown. The connection component includes a telescopic rod 91 and a hinge seat 92. Hinge seats are symmetrically fixed at both ends of the bottom of the adjacent end faces of the auxiliary adsorption cover 81 and the anti-seepage cover member 21. A connecting rod 93 is rotatably installed in the hinge seat through a pin shaft. The other end of the connecting rod is connected to the outer end face of the anti-seepage cover member 21. The telescopic rod is arranged above the two hinge seats, and both ends of the telescopic rod are respectively oriented towards the auxiliary adsorption cover 81 and the anti-seepage cover member 21, and are hinged to the adjacent side of the auxiliary adsorption cover 81 and the anti-seepage cover member 21. The telescopic rod 93 includes an adjusting rod 94. Threaded holes are provided axially inward at the left and right ends of the adjusting rod 94, and threaded rods 95 are fitted in a matching manner. The distal ends of the threaded rods extend outward from the adjusting rod and are hinged to the adjacent side of the auxiliary adsorption cover 81 or the anti-seepage cover member 21. The thread directions of the threaded holes at the left and right ends of the adjusting rod 94 are set in opposite directions. When the adjusting rod is rotated, the two threaded rods 94 will retract or extend inward synchronously, thereby driving the auxiliary adsorption cover to rotate around its lower hinge seat 92.

[0078] Compared with the medical clinical drainage device provided in Embodiment 6, when the medical clinical drainage device provided in this embodiment is in use, the position of the auxiliary adsorption cover can be adjusted according to the skin slope at the adsorption position so that it fits the skin.

[0079] It should be understood that the above specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent replacements, improvements, etc., made without departing from the spirit and scope of the present invention, such as setting disinfected cotton in the positive pressure cavity, should all be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A drainage device for medical clinical use, characterized in that, It includes an adsorption and drainage unit, an adsorption control unit and a drainage tube. The adsorption and drainage unit includes an anti-seepage cover, a positive pressure tube and a negative pressure tube. A positive pressure cavity with an open bottom is provided in the middle of the anti-seepage cover. An annular negative pressure cavity with an open bottom is provided in the anti-seepage cover outside the positive pressure cavity, and the negative pressure cavity and the positive pressure cavity are coaxially arranged; a guide post is vertically provided in the positive pressure cavity, and a drainage tube hole penetrating the anti-seepage cover is vertically provided in the middle of the guide post. The drainage tube is slidably and sealingly sleeved in the drainage tube hole, and the puncture end of the drainage tube extends downward out of the guide post and is sealingly sleeved with an annular pressing plate. The annular pressing plate can slide axially along the drainage tube and be locked; the other end of the drainage tube is connected with a liquid storage mechanism; the adsorption control unit includes a control bottle, a piston and a negative pressure top spring. A control cavity is axially provided in the control bottle. The piston is slidably installed axially in the control cavity and divides the control cavity axially and sealingly into an upper control cavity and a lower control cavity. The negative pressure top spring is matched and installed in the upper control cavity. High-pressure gas is injected into the lower control cavity. In the unused state, the high-pressure gas will push the piston upward to squeeze the negative pressure top spring; the upper control cavity is movably communicated with the negative pressure cavity through the negative pressure tube, the lower control cavity is movably communicated with the positive pressure cavity through the positive pressure tube, and a stop valve is provided on the positive pressure tube.

2. The medical clinical drainage device according to claim 1, characterized in that, The anti-seepage cover includes a top cover, an outer spacer ring and an inner spacer ring. The outer spacer ring is coaxially fixed to the bottom surface of the top cover, and the outer ring surface of the outer spacer ring is flush with the outer surface of the top cover. The inner spacer ring is coaxially and spacedly fixed to the bottom of the top cover inside the outer spacer ring. The space between the outer spacer ring and the inner spacer ring is the negative pressure cavity, and the space inside the inner spacer ring is the positive pressure cavity. The guide post is coaxially arranged with the top cover, and the top end of the guide post is fixedly connected to the bottom surface of the top cover.

3. The medical clinical drainage device according to claim 2, characterized in that, The length dimension of the guide post is a, the thickness dimension of the annular pressing plate is b, and the height dimension of the inner spacer ring is c, where a + b ≤ c.

4. The medical clinical drainage device according to claim 3, characterized in that, The annular pressing plate includes an annular pressing plate body and a limit sleeve. The pressing plate body is sealingly and slidably sleeved on the puncture end of the drainage tube below the guide post. The limit sleeve is slidably sleeved on the drainage tube above the pressing plate body and is vertically connected to the lower pressing plate body; a threaded hole communicating with the inside of the limit sleeve is radially provided on the circumferential side wall of one side of the limit sleeve, and a locking bolt is fixed.

5. The medical clinical drainage device according to claim 1, characterized in that, An activity connection assembly is provided on the anti-seepage cover; the activity connection assembly includes a positive pressure quick connector and a negative pressure quick connector. The positive pressure tube is communicated with the positive pressure cavity through the positive pressure quick connector; the negative pressure tube is communicated with the negative pressure cavity through the negative pressure quick connector.

6. The medical clinical drainage device according to claim 5, characterized in that, Positive pressure threaded holes communicating with the positive pressure cavity and negative pressure threaded holes communicating with the negative pressure cavity are vertically opened on the upper end surface of the anti-seepage cover. The positive pressure quick connector and the negative pressure quick connector are respectively matched and installed in the positive pressure threaded hole and the negative pressure threaded hole.

7. The medical clinical drainage device according to claim 1, characterized in that, A negative pressure suction hole communicating with the upper control cavity is vertically opened at the top of the control bottle. One end of the negative pressure tube is connected to the negative pressure suction hole, and the other end of the negative pressure tube is movably communicated with the negative pressure cavity; a positive pressure exhaust hole communicating with the lower control cavity is vertically opened at the bottom of the control bottle. The stop valve is installed on the positive pressure exhaust hole in a skived manner, and the positive pressure tube is communicated with the lower control cavity through the stop valve.

8. The medical clinical drainage device according to claim 1, characterized in that, It further includes a pressure charging mechanism, which includes a one-way intake valve and a stamping assembly. The one-way intake valve is fitted on the control bottle, and the exhaust end of the one-way intake valve communicates with the lower control chamber. The intake port of the one-way intake valve is movably connected to the pressure charging assembly, and the pressure charging assembly can inject high-pressure gas into the lower control chamber at a constant pressure through the one-way intake valve.

9. The medical clinical drainage device according to claim 8, wherein, The pressure charging assembly includes a pressure charging pump, an exhaust pipe and a pressure charging controller. An air intake hole communicating with the outside is provided at the bottom of the lower chamber below the piston. The one-way intake valve is fitted in the air intake hole. The exhaust end of the pressure charging pump is communicated with the one-way intake valve through the exhaust pipe. The exhaust pipe is movably connected to the one-way intake valve, and a pressure sensor is provided in the exhaust pipe. The pressure sensor is communicatively connected to the pressure charging controller, and the pressure charging controller is control-connected to the pressure charging pump.

10. The medical clinical drainage device according to claim 1, characterized in that, A pressure relief control communicating with the negative pressure chamber is vertically opened at the top end of the anti-seepage cover member, and a pressure relief valve is fitted.

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