Flushing drainage device and system

Abstract

The invention relates to a flushing and drainage device and system. The flushing and drainage device comprises a main pipe unit, a first injection pipe unit and a second injection pipe unit. The flushing and drainage device has the advantages that the main pipe unit is matched with the inner pipe device, so that the flushing and drainage device adopts an air pressure balance design (a first through groove element is formed in the high position, and a first butt joint element with the cross section being of a three-edge supporting structure is adopted, so that the external air pressure can be kept balanced with the air pressure in the main pipe unit), and the comfort of a patient after catheterization is improved; the first end (tail end) of the inner pipe device is close to the first end (tail end) of the main pipe unit, so that negative pressure gravitation is concentrated at the port of the first end (tail end) of the inner pipe device in a negative pressure state, and a permeation side hole (flow guide element) in the main pipe unit has no negative pressure suction gravitation; and errhysis, pus, effusion and residues around the main pipe unit can be introduced by virtue of gravity and natural pressure of a human body, so that the problems that the surfaces of visceral organs are broken by suction and granulation tissues are embedded in a negative pressure state are solved.

Description

Technical Field

[0001] The present invention relates to the technical field related to medical irrigation and drainage, and particularly to an irrigation and drainage device and system. Background Art

[0002] Medical irrigation and drainage is a commonly used treatment technique in surgical clinics. By continuously irrigating and draining the lesion area, it can effectively remove infection foci, foreign body residues, pus cavity effusions, necrotic tissues, and infection sources, continuously flush and dilute toxins, reduce the bacterial load, and promote wound healing. Its operation usually needs to be completed in a sterile environment. First, the wound surface is repeatedly flushed with normal saline, antibiotic solution, etc. to dilute and flush out exudates, necrotic tissues, and pathogens. Then, a suitable drainage tube (such as a rubber tube or a silicone tube) is selected according to the location and condition of the disease and placed deep in the lesion or body cavity. The residual liquid is discharged through negative pressure suction or gravity. This technique is widely used in scenarios such as abdominal infections, abscess incisions, and postoperative wound exudates. For example, placing an irrigation and drainage tube after abdominal surgery can effectively prevent complications such as intestinal fistulas and abdominal abscesses; in the treatment of empyema, irrigation and drainage can quickly control the infection and improve the patient's respiratory function. During the operation, it is necessary to pay attention to fixing the drainage tube firmly to avoid twisting and blocking. At the same time, closely observe the volume, color, and nature of the drainage fluid, and adjust the irrigation frequency and drainage volume according to the condition. The reasonable application of medical irrigation and drainage can significantly reduce the risk of infection and create favorable conditions for the patient's recovery.

[0003] Existing medical irrigation and drainage devices have various defects.

[0004] 1. In terms of the negative pressure device, the negative pressure device adopts a closed design with a screw cap at the upper ends of the inner and outer tubes, which cannot achieve the balance of internal and external air pressures and is also difficult to flexibly switch between active and passive negative pressure states. At the same time, after this component is cut, it will lose the irrigation and drainage function. Doctors cannot adjust the tube length according to the surgical method and the patient's condition. If the tube body is too long, it will also lead to a decline in the drainage effect and leakage, affecting the patient's movement.

[0005] 2. In terms of the structural design, the side holes on the outer tube wall are not drilled vertically, and the hole diameters are different, which easily allows the organ epidermis and granulation tissue to embed; the open-ended design at the end of the outer tube is prone to damage the organ and surrounding tissues under negative pressure, increasing the risk of secondary trauma.

[0006] 3. In terms of material and function, the silicone tube body lacks toughness and support, is easily flattened and blocked by organs. After being blocked, it is impossible to unclog the tube, and it is also difficult to quickly form a sinus tract. Bedside tube replacement cannot be achieved, and a second operation is required, increasing the risk of infection. The unilateral water inlet pipe design of the outer tube results in insufficient pressure and water flushing volume, and the functions of flushing water and inflating air cannot be switched. It is difficult to comprehensively clean the affected area and the surrounding infected areas, and the flushing and drainage requirements of special parts such as organ stenosis and dissection cannot be met. In addition, due to the excessive softness of the silicone tube body, when the bending angle of the surgical path exceeds 20°, normal catheter placement, flushing, and drainage cannot be carried out, greatly limiting the clinical applicability of the device.

[0007] Currently, for the problems existing in the medical flushing and drainage device in the negative pressure design, structural configuration, material properties, and function implementation in the related technology, no effective solution has been proposed. Summary of the Invention

[0008] The object of the present invention is to provide a flushing and drainage device and system for the deficiencies in the prior art to solve the problems existing in the medical flushing and drainage device in the negative pressure design, structural configuration, material properties, and function implementation in the related technology.

[0009] To achieve the above object, the technical solution adopted by the present invention is:

[0010] In a first aspect, a flushing and drainage device is provided, including:

[0011] A main tube unit, with the first end of the main tube unit located at the lesion and the second end of the main tube unit located outside the body;

[0012] A first injection tube unit, which is arranged on one side of the main tube unit. The first end of the first injection tube unit is connected to the second end of the main tube unit and is used to communicate with an injection device or a compressor to inject flushing liquid into the main tube unit or inject air flow into the main tube unit;

[0013] A second injection tube unit, which is arranged on the other side of the main tube unit. The first end of the second injection tube unit is connected to the second end of the main tube unit and is used to communicate with an injection device or a compressor to inject flushing liquid into the main tube unit or inject air flow into the main tube unit;

[0014] Wherein, the outlet position of the main tube unit for the first injection tube unit is different from the outlet position of the main tube unit for the second injection tube unit, and / or, the outlet density of the main tube unit for the first injection tube unit is different from the outlet density of the main tube unit for the second injection tube unit.

[0015] In some of the embodiments, the main tube unit includes:

[0016] A main tube element, with the first end of the main tube element located at the lesion site, and the second end of the main tube element located outside the body, and respectively connected to the first syringe tube unit and the second syringe tube unit;

[0017] A number of diversion elements, which are distributed at the first end of the main tube element and are used to divert the drainage in the lesion to the main tube element;

[0018] A number of first through-groove elements, which are distributed in the middle of the main tube element and are used to allow external air to enter the main tube element;

[0019] A first inlet element, which is arranged on the first side of the second end of the main tube element and is connected to the first syringe tube unit, and is used to input flushing liquid or air flow;

[0020] A first inner syringe tube element, which is arranged inside the main tube element and is connected to the first inlet element;

[0021] A number of first outlet elements, which are distributed at the first end of the main tube element and are respectively connected to the first inner syringe tube element, and are used to output flushing liquid or air flow;

[0022] A second inlet element, which is arranged on the second side of the second end of the main tube element and is connected to the second syringe tube unit, and is used to input flushing liquid or air flow;

[0023] A second inner syringe tube element, which is arranged inside the main tube element and is connected to the second inlet element;

[0024] A number of second outlet elements, which are distributed at the first end of the main tube element and are respectively connected to the second inner syringe tube element, and the positions of the number of second outlet elements are different from the positions of the number of first outlet elements, and are used to output flushing liquid or air flow.

[0025] In some of the embodiments, the main tube unit further includes:

[0026] A first docking element, with the first end of the first docking element connected to the first inlet element, and the second end of the first docking element being detachably connected to the first syringe tube unit.

[0027] In some of the embodiments, the main tube unit further includes:

[0028] A second docking element, the first end of the second docking element being in communication with the second inlet element, and the second end of the second docking element being detachably connected to the second injection tube unit.

[0029] In some embodiments, a plurality of the first through-channel elements are distributed along the axial direction and / or the circumferential direction of the main pipe element.

[0030] In some embodiments, a plurality of the first through-channel elements are arranged in a staggered manner.

[0031] In some embodiments, a plurality of the first outlet elements are spaced along the axial direction and / or the circumferential direction of the main pipe element.

[0032] In some embodiments, a plurality of the first outlet elements are arranged in a staggered manner.

[0033] In some embodiments, a plurality of the second outlet elements are spaced along the axial direction and / or the circumferential direction of the main pipe element.

[0034] In some embodiments, a plurality of the second outlet elements are arranged in a staggered manner.

[0035] In some embodiments, the distribution density of the first outlet elements is different from the distribution density of the second outlet elements.

[0036] In some embodiments, the first injection tube unit includes:

[0037] A first injection tube element, the first end of the first injection tube element being in communication with the second end of the main pipe unit, for injecting a flushing liquid into the main pipe unit or injecting an air flow into the main pipe unit;

[0038] A first connection element, the first connection element being disposed at the second end of the first injection tube element and being in communication with the first injection tube element, for connecting an external injection device or a compressor.

[0039] In some embodiments, the second injection tube unit includes:

[0040] A second injection tube element, the first end of the second injection tube element being in communication with the second end of the main pipe unit and being symmetrically arranged with the first injection tube unit, for injecting a flushing liquid into the main pipe unit or injecting an air flow into the main pipe unit;

[0041] A second connection element, the second connection element being disposed at the second end of the second injection tube element and being in communication with the second injection tube element, for connecting an external injection device or a compressor.

[0042] In some of these embodiments, the first syringe unit further includes:

[0043] A third docking element, the second end of the third docking element is in communication with the first end of the first syringe element, and the first end of the third docking element is detachably connected to the main tube unit.

[0044] In some of these embodiments, the second syringe unit further includes:

[0045] A fourth docking element, the second end of the fourth docking element is in communication with the first end of the second syringe element, and the first end of the fourth docking element is detachably connected to the main tube unit.

[0046] In a second aspect, there is provided an irrigation and drainage system, including:

[0047] The irrigation and drainage device as described in the first aspect;

[0048] An inner tube device, the first end of the inner tube device is removably disposed inside the main tube unit of the irrigation and drainage device, and is used to communicate with a negative pressure device to drain the negative pressure generated externally to the main tube unit;

[0049] A negative pressure drainage device, the first end of the negative pressure drainage device is removably disposed inside the main tube unit of the irrigation and drainage device, and the second end of the negative pressure drainage device is located outside the main tube unit, and is used to generate negative pressure and drain the negative pressure to the main tube unit.

[0050] In some of these embodiments, the inner tube device includes:

[0051] An inner tube element, the first end of the inner tube element is removably disposed inside the main tube unit of the irrigation and drainage device, and is used to drain the negative pressure generated externally to the main tube unit;

[0052] A first clamping element, the first clamping element is connected to the inner tube element and is detachably connected to the main tube unit of the irrigation and drainage device;

[0053] A third connecting element, the third connecting element is disposed at the second end of the inner tube element and is in communication with the inner tube element, and is used to communicate with a negative pressure device.

[0054] In some of these embodiments, the negative pressure drainage device includes:

[0055] A drainage tube component, the first end of the drainage tube component is removably disposed inside the main tube unit of the flushing and drainage device, and the second end of the drainage tube component is located outside the main tube unit of the flushing and drainage device for draining the generated negative pressure to the main tube unit;

[0056] A second clamping component, the second clamping component is connected to the drainage tube component and is detachably connected to the main tube unit of the flushing and drainage device;

[0057] A valve component, the valve component is disposed at the second end of the drainage tube component and is in communication with the drainage tube component for controlling the flow direction;

[0058] A negative pressure component, the negative pressure component is disposed at the second end of the drainage tube component, and the valve component is disposed inside the negative pressure component for generating negative pressure to collect the drainage to the negative pressure component;

[0059] A second through groove component, the second through groove component is disposed at the first end of the negative pressure component for the valve component to pass through;

[0060] A locking component, the locking component is detachably disposed on the valve component and abuts against the first end of the negative pressure component for fixing the valve component firmly on the negative pressure component;

[0061] A third through groove component, the third through groove component is disposed at the second end of the negative pressure component for draining the drainage;

[0062] A sealing component, the sealing component is removably disposed on the third through groove component for sealing the third through groove component.

[0063] The present invention adopts the above technical solutions, compared with the prior art, has the following technical effects:

[0064] 1. By using the cooperation between the main tube unit and the inner tube device, the flushing and drainage device adopts an air pressure balance design (a first through groove component is opened at a high position, and a first docking component with a triangular cross-section support structure is adopted, so that the external air pressure can be balanced with the air pressure inside the main tube unit), increasing the comfort of the patient after catheterization and avoiding the wound surface and surrounding tissues of the patient from being sucked and damaged under negative pressure; by making the first end (the end) of the inner tube device close to the first end (the end) of the main tube unit, the negative pressure attraction is concentrated at the port of the first end (the end) of the inner tube device under negative pressure, so that there is no negative pressure attraction on the permeable side holes (diversion components) of the main tube unit, and the blood oozing, pus, effusion and residues around the main tube unit can be introduced by gravity and the natural pressure of the human body, solving the problems of the organ surface being sucked and damaged and the granulation tissue being embedded under negative pressure.

[0065] 2. The coordinated use of the first injection tube unit and the second injection tube unit can serve as a gas passage during minimally invasive endoscopic surgery. After injecting air pressure, it can support the narrow dissection of organs and the narrow parts of low-lying organs, solving the problem that the pipeline cannot be directly inserted into the wound surface and the affected area for flushing and drainage.

[0066] 3. The coordinated use of the main tube unit, the first injection tube unit and the second injection tube unit enables the flushing and drainage device to cut the tube to an appropriate length according to the surgical procedure and the specific situation of the patient, and can also cut the tube to an appropriate length according to the alleviation of the disease course, and the flushing and drainage effect is not affected after cutting.

[0067] 4. The coordinated use of the negative pressure drainage unit enables the flushing and drainage device to have an inner tube and a negative pressure kit that can be freely replaced. Under the condition of the outer tube that does not need to be replaced, it can quickly and effectively solve the problem of switching the inner tube and the negative pressure kit. Description of the Drawings

[0068] Figure 1 is a schematic perspective view (I) of the flushing and drainage device according to an embodiment of the present invention;

[0069] Figure 2 is a schematic perspective view (II) of the flushing and drainage device according to an embodiment of the present invention;

[0070] Figure 3a is a schematic perspective view of the main tube unit according to an embodiment of the present invention;

[0071] Figure 3b is an enlarged view of a part of the main tube unit according to an embodiment of the present invention;

[0072] Figure 4 is a schematic perspective view of the first injection tube unit according to an embodiment of the present invention;

[0073] Figure 5 is a schematic perspective view of the second injection tube unit according to an embodiment of the present invention;

[0074] Figure 6 is a schematic perspective view (I) of the flushing and drainage system according to an embodiment of the present invention;

[0075] Figure 7 is a schematic perspective view (II) of the flushing and drainage system according to an embodiment of the present invention;

[0076] Figure 8 is a partial schematic perspective view of the inner tube device according to an embodiment of the present invention;

[0077] Figure 9a is a schematic perspective view of the negative pressure drainage device according to an embodiment of the present invention;

[0078] Figure 9b is an exploded view of a negative pressure drainage device according to an embodiment of the present invention;

[0079] Figure 9c is a schematic diagram of the internal structure of a part of the negative pressure drainage device according to an embodiment of the present invention.

[0080] The reference numerals therein are: 100, flushing and drainage device;

[0081] 110, main pipe unit; 111, main pipe element; 112, diversion element; 113, first through groove element; 114, first inlet element; 115, first inner injection pipe element; 116, first outlet element; 117, second inlet element; 118, second inner injection pipe element; 119, second outlet element; 1110, first docking element; 1111, second docking element;

[0082] 120, first injection pipe unit; 121, first injection pipe element; 122, first connecting element; 123, third docking element;

[0083] 130, second injection pipe unit; 131, second injection pipe element; 132, second connecting element; 133, fourth docking element;

[0084] 200, inner tube device; 201, inner tube element; 202, first clamping element; 203, third connecting element;

[0085] 300, negative pressure drainage device; 301, drainage pipe element; 302, second clamping element; 303, valve element; 304, negative pressure element; 305, second through groove element; 306, locking element; 307, third through groove element; 308, sealing element. Detailed implementation manners

[0086] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0087] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0088] Next, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments, but it is not a limitation of the present invention.

[0089] Embodiment 1

[0090] This embodiment relates to the flushing and drainage device of the present invention

[0091] As Figure 1 、 Figure 2 shown, a flushing and drainage device 100 includes a main pipe unit 110, a first injection pipe unit 120, and a second injection pipe unit 130. Among them, the first end of the main pipe unit 110 is located at the lesion, and the second end of the main pipe unit 110 is located outside the body; the first injection pipe unit 120 is arranged on one side of the main pipe unit 110, and the first end of the first injection pipe unit 120 is communicated with the second end of the main pipe unit 110, and is used to communicate with an injection device or a compressor to inject flushing liquid into the main pipe unit 110 or inject air flow into the main pipe unit 110; the second injection pipe unit 130 is arranged on the other side of the main pipe unit 110, and the first end of the second injection pipe unit 130 is communicated with the second end of the main pipe unit 110, and is used to communicate with an injection device or a compressor to inject flushing liquid into the main pipe unit 110 or inject air flow into the main pipe unit 110.

[0092] Among them, the outlet position of the main pipe unit 110 for the first injection pipe unit 120 is different from the outlet position of the main pipe unit 110 for the second injection pipe unit 130, and / or, the outlet density of the main pipe unit 110 for the first injection pipe unit 120 is different from the outlet density of the main pipe unit 110 for the second injection pipe unit 130.

[0093] The usage method of the present invention is as follows:

[0094] (1) Flushing

[0095] Insert the first end of the main pipe unit 110 into the lesion; connect the first injection pipe unit 120 with an external first injection device; connect the second injection pipe unit 130 with an external second injection device; start the injection device to work and make it transport the flushing liquid;

[0096] During the process, according to the flushing needs, the first injection device and the second injection device can work simultaneously or the first injection device and the second injection device can work individually. The specific process is as follows:

[0097] When low-height flushing is required (that is, when flushing near the first end (end) position of the main pipe unit 110), the second injection device can be started to work to transport the flushing liquid to the corresponding position to flush the lesion;

[0098] When high, medium, and low-height flushing is required, the first injection device can be started to work to transport the flushing liquid to the corresponding position to flush the lesion;

[0099] When 360° flushing is required, the first injection device and the second injection device can be started simultaneously to transport the flushing liquid to the corresponding position to flush the lesion.

[0100] (2) Unclogging the main pipe unit 110

[0101] Insert the negative pressure device into the main pipe unit 110 until the first end (the end) of the negative pressure device is close to the first end (the end) of the main pipe unit 110; start the negative pressure device to work so that the liquid in the lesion enters the negative pressure device through the main pipe unit 110; under the action of negative pressure, the liquid flows out to the outside of the lesion.

[0102] (3) Inflating

[0103] During minimally invasive endoscopic surgery, connect the first injection tube unit 120 to an external first compressor and connect the second injection tube unit 130 to an external second compressor;

[0104] During the process, according to the need for inflation, the first compressor and the second compressor can work simultaneously or the first compressor and the second compressor can work individually. The specific process is as follows:

[0105] When low-height inflation is required (i.e., when flushing near the first end (the end) of the main pipe unit 110), the second compressor can be started to work so that it delivers air flow to the corresponding position to inflate the lesion;

[0106] When high, medium, and low-height flushing is required, the first compressor can be started to work so that it delivers air flow to the corresponding position to inflate the lesion;

[0107] When 360° inflation is required, the first compressor and the second compressor can be started simultaneously to work so that they deliver air flow to the corresponding position to inflate the lesion.

[0108] Such as Figure 3a 、 Figure 3bAs shown in the figure, the main pipe unit 110 includes a main pipe element 111, a number of diversion elements 112, a number of first through groove elements 113, a first inlet element 114, a first inner injection pipe element 115, a number of first outlet elements 116, a second inlet element 117, a second inner injection pipe element 118, and a number of second outlet elements 119. Among them, the first end of the main pipe element 111 is located at the lesion, and the second end of the main pipe element 111 is located outside the body and is respectively connected to the first injection pipe unit 120 and the second injection pipe unit 130; a number of diversion elements 112 are distributed at the first end of the main pipe element 111 for diverting the drainage in the lesion to the main pipe element 111; a number of first through groove elements 113 are distributed in the middle of the main pipe element 111 for allowing external air to enter the main pipe element 111; the first inlet element 114 is arranged on the first side of the second end of the main pipe element 111 and is communicated with the first injection pipe unit 120 for inputting flushing fluid or air flow; the first inner injection pipe element 115 is arranged inside the main pipe element 111 and is communicated with the first inlet element 114; a number of first outlet elements 116 are distributed at the first end of the main pipe element 111 and are respectively communicated with the first inner injection pipe element 115 for outputting flushing fluid or air flow; the second inlet element 117 is arranged on the second side of the second end of the main pipe element 111 and is communicated with the second injection pipe unit 130 for inputting flushing fluid or air flow; the second inner injection pipe element 118 is arranged inside the main pipe element 111 and is communicated with the second inlet element 117; a number of second outlet elements 119 are distributed at the first end of the main pipe element 111 and are respectively communicated with the second inner injection pipe element 118, and the positions of the number of second outlet elements 119 are different from the positions of the number of the first outlet elements 116 for outputting flushing fluid or air flow.

[0109] The first end of the main pipe element 111 is a closed end and the second end is an open end. Among them, the first end of the main pipe element 111 has an arc-shaped closed structure, so as to facilitate entering the lesion and isolating the direct action of the patient on the wound surface and the organ surface under negative pressure, avoiding sucking and breaking the wound surface, the organ surface and the surrounding granulation tissue under negative pressure.

[0110] In some of the embodiments, the main pipe element 111 is made of polyvinyl chloride transparent material. Using polyvinyl chloride material ensures that the main pipe element 111 has both supportability and flexibility (high modulus. That is, the modulus refers to the ratio of stress to strain of the material under the stress state). The main pipe element 111 is not easily flattened and can effectively maintain the smoothness of flushing and drainage, and can quickly and effectively form a sinus tract, effectively achieving direct bedside tube replacement without secondary surgery, and avoiding secondary trauma and secondary infection caused by tube replacement during secondary surgery for the patient.

[0111] In some of the embodiments, the main pipe element 111 is an outer sleeve. Among them, scale lines are arranged on the outer wall of the main pipe element 111.

[0112] A plurality of flow guiding elements 112 are arranged through the tube wall of the main tube element 111.

[0113] The plurality of flow guiding elements 112 are arranged in a staggered manner. Specifically, the plurality of flow guiding elements 112 form a plurality of flow guiding groups. Each flow guiding group includes at least two flow guiding elements 112. The plurality of flow guiding groups are arranged in a staggered manner.

[0114] In some of these embodiments, the flow guiding elements 112 in adjacent flow guiding groups are arranged at different heights, that is, when comparing the two flow guiding groups, the flow guiding elements 112 of one flow guiding group are arranged closer to the first end of the main tube element 111, and the flow guiding elements 112 of the other flow guiding group are arranged farther from the first end of the main tube element 111.

[0115] When a plurality of flow guiding elements 112 are arranged in each flow guiding group, the plurality of flow guiding elements 112 are uniformly distributed vertically upward along the axial direction of the main tube element 111.

[0116] The cross-section of the flow guiding element 112 is circular.

[0117] The size of the flow guiding element 112 matches the size of the main tube element 111. Generally, the radial dimension of the flow guiding element 112 is smaller than the radial dimension and the inner axial dimension of the inner edge surface of the main tube element 111, and the axial dimension of the flow guiding element 112 is equal to the wall thickness of the main tube element 111.

[0118] In some of these embodiments, the flow guiding element 112 is a flow guiding hole.

[0119] The first through groove element 113 is arranged through the tube wall of the main tube element 111.

[0120] The cross-section of the first through groove element 113 is circular.

[0121] Generally, the radial dimension of the first through groove element 113 is smaller than the radial dimension and the inner axial dimension of the inner edge surface of the main tube element 111, and the axial dimension of the first through groove element 113 is equal to the wall thickness of the main tube element 111.

[0122] In some of these embodiments, a plurality of first through groove elements 113 form a plurality of through hole groups. Each through hole group includes at least two first through groove elements 113. The plurality of through hole groups are equally spaced vertically upward along the axial direction of the main tube element 111.

[0123] When a plurality of first through groove elements 113 are arranged in each through hole group, the plurality of first through groove elements 113 are arranged at intervals along the circumferential direction of the main tube element 111. For the same through hole group, the distances of the plurality of first through groove elements 113 from the first end of the main tube element 111 can be the same or different.

[0124] In some of these embodiments, the first through-groove element 113 is a through-hole.

[0125] The cross-section of the first inlet element 114 is circular.

[0126] Generally, the radial dimension of the first inlet element 114 is smaller than the radial dimension of the inner edge surface of the main pipe element 111, and the axial dimension of the inner side, the axial dimension of the first inlet element 114 is smaller than the wall thickness of the main pipe element 111.

[0127] In some of these embodiments, the first inlet element 114 is the first inlet.

[0128] The cross-section of the first inner injection tube element 115 is circular.

[0129] Generally, the radial dimension of the first inner injection tube element 115 is smaller than the wall thickness of the main pipe element 111, and the axial dimension of the first inner injection tube element 115 is smaller than the axial dimension of the inner side of the main pipe element 111.

[0130] Generally, the radial dimension of the first inner injection tube element 115 is not less than the radial dimension of the first inlet element 114.

[0131] In some of these embodiments, the first inner injection tube element 115 is the first flushing cavity.

[0132] The cross-section of the first outlet element 116 is circular.

[0133] Generally, the radial dimension of the first outlet element 116 is smaller than the radial dimension and the axial dimension of the first inner injection tube element 115, and the axial dimension of the first outlet element 116 is smaller than the radial dimension of the first inner injection tube element 115.

[0134] In some of these embodiments, a plurality of first outlet elements 116 form a plurality of first outlet groups. Each first outlet group includes at least two first outlet elements 116. The plurality of first outlet groups are arranged at equal intervals along the axial direction of the main pipe element 111.

[0135] For each first outlet group, the plurality of first outlet elements 116 are arranged at circumferential intervals along the main pipe element 111. For the same first outlet group, the distances of the plurality of first outlet elements 116 from the first end of the main pipe element 111 may be the same or different.

[0136] In some of these embodiments, the first outlet element 116 is the first flushing hole.

[0137] The cross-section of the second inlet element 117 is circular.

[0138] Generally, the radial dimension of the second inlet element 117 is smaller than the radial dimension of the inner edge surface of the main pipe element 111, and the inner axial dimension. The axial dimension of the second inlet element 117 is smaller than the wall thickness of the main pipe element 111.

[0139] Generally, the radial dimension of the second inlet element 117 is equal to the radial dimension of the first inlet element 114, and the inner axial dimension. The axial dimension of the second inlet element 117 is equal to the axial dimension of the first inlet element 114.

[0140] In some of these embodiments, the second inlet element 117 is the second inlet.

[0141] The cross-section of the second inner injection tube element 118 is circular.

[0142] Generally, the radial dimension of the second inner injection tube element 118 is smaller than the wall thickness of the main pipe element 111, and the axial dimension of the second inner injection tube element 118 is smaller than the inner axial dimension of the main pipe element 111.

[0143] Generally, the radial dimension of the second inner injection tube element 118 is not less than the radial dimension of the second inlet element 117.

[0144] Generally, the radial dimension of the second inner injection tube element 118 is equal to the radial dimension of the first inner injection tube element 115, and the axial dimension of the second inner injection tube element 118 is equal to the axial dimension of the first inner injection tube element 115.

[0145] In some of these embodiments, the second inner injection tube element 118 is the second flushing cavity.

[0146] The cross-section of the second outlet element 119 is circular.

[0147] Generally, the radial dimension of the second outlet element 119 is smaller than the radial dimension and the axial dimension of the second inner injection tube element 118, and the axial dimension of the second outlet element 119 is smaller than the radial dimension of the second inner injection tube element 118.

[0148] Generally, the radial dimension of the second outlet element 119 is equal to the radial dimension of the first outlet element 116, and the axial dimension of the second outlet element 119 is equal to the axial dimension of the first outlet element 116.

[0149] In some of these embodiments, a plurality of second outlet elements 119 form a plurality of second outlet groups. Each second outlet group includes at least one second outlet element 119. The plurality of second outlet groups are arranged at equal intervals along the axial direction of the main pipe element 111.

[0150] When a plurality of second outlet elements 119 are provided in each second outlet group, for each second outlet group, the plurality of second outlet elements 119 are arranged at intervals along the circumferential direction of the main pipe element 111. For the same second outlet group, the distances of the plurality of second outlet elements 119 from the first end of the main pipe element 111 may be the same or different.

[0151] The distribution density of the plurality of first outlet elements 116 is different from the distribution density of the plurality of second outlet elements 119. Specifically, it includes: the distribution density of the plurality of first outlet elements 116 is less than the distribution density of the plurality of second outlet elements 119, and the distribution density of the plurality of first outlet elements 116 is greater than the distribution density of the plurality of second outlet elements 119.

[0152] The first outlet element 116 at the farthest position (i.e., the first outlet element 116 farthest from the main pipe element 111) and the second outlet element 119 at the farthest position (i.e., the second outlet element 119 farthest from the main pipe element 111) may be in substantially the same position or in different positions. For example, the distance between the first outlet element 116 and the first end of the main pipe element 111 is greater than the distance between the second outlet element 119 and the first end of the main pipe element 111.

[0153] In some of these embodiments, the second outlet element 119 and the first outlet element 116 form a high, medium, and low height design. Specifically, taking the example that the plurality of first outlet elements 116 form three first outlet groups, the first outlet group at the bottommost is a low height design with the second outlet element 119, the first outlet group in the middle is a medium height design, and the first outlet group at the topmost is a high height design.

[0154] Among them, the second outlet element 119 and the first outlet element 116 forming a high, medium, and low height design can effectively achieve 360° non - dead - angle cleaning of the affected area and the surrounding high, medium, and low parts, and thoroughly wash the wound surface and the surrounding infected areas, effectively controlling the risk of secondary infection.

[0155] In some of these embodiments, the second outlet element 119 is a second flushing hole.

[0156] As Figure 4 shown, the first injection tube unit 120 includes a first injection tube element 121 and a first connection element 122. Among them, the first end of the first injection tube element 121 is connected to the second end of the main pipe unit 110, and is used to inject flushing liquid or air flow into the main pipe unit 110; the first connection element 122 is arranged at the second end of the first injection tube element 121 and is connected to the first injection tube element 121, and is used to connect an external injection device or a compressor.

[0157] Specifically, the first end of the first injection tube element 121 is in communication with the first inlet element 114.

[0158] In some of these embodiments, the first injection tube element 121 is fixedly connected to the main tube element 111, including but not limited to heat fusion connection.

[0159] The cross-section of the first injection tube element 121 is circular.

[0160] Generally, the radial dimension of the outer edge surface of the first injection tube element 121 is smaller than the radial dimension and the outer lateral axial dimension of the outer edge surface of the main tube element 111.

[0161] Generally, the radial dimension of the inner edge surface of the first injection tube element 121 is equal to the radial dimension of the first inlet element 114.

[0162] In some of these embodiments, the first injection tube element 121 is made of polyurethane transparent material.

[0163] In some of these embodiments, the first injection tube element 121 is the first injection tube.

[0164] In some of these embodiments, the first connection element 122 includes a first injection joint, a first connection band, and a first sealing cover. Among them, the first injection joint is arranged at the second end of the first injection tube element 121 and is in communication with the first injection tube element 121; the first end of the first connection band is connected to the second end of the first injection joint; the first sealing cover is arranged at the second end of the first connection band and is detachably connected to the first injection joint for sealing the second end of the first injection joint.

[0165] Generally, the minimum radial dimension of the outer edge surface of the first injection joint is larger than the radial dimension of the outer edge surface of the first injection tube element 121, the minimum radial dimension of the inner edge surface of the first injection joint is equal to the radial dimension of the inner edge surface of the first injection tube element 121, and the axial dimension of the first injection joint is smaller than the axial dimension of the first injection tube element 121.

[0166] Generally, the length of the first connection band is larger than the maximum radial dimension of the outer edge surface of the first injection joint, the width of the first connection band is smaller than the minimum radial dimension of the outer edge surface of the first injection joint, and the height (thickness) of the first connection band is smaller than the axial dimension of the first injection joint.

[0167] Generally, the maximum radial dimension of the first sealing cover is smaller than the length of the first connection band, the minimum radial dimension of the first sealing cover is larger than the width of the first connection band, and the axial dimension of the first sealing cover is larger than the height (thickness) of the first connection band.

[0168] Generally, the minimum radial dimension of the first sealing cap is equal to the maximum radial dimension of the inner edge surface of the first injection joint, and the axial dimension of the first sealing cap is smaller than the axial dimension of the first injection joint.

[0169] In some of these embodiments, the first connecting element 122 is fixedly connected to the first injection tube element 121, including but not limited to heat fusion connection.

[0170] In some of these embodiments, the first connecting element 122 is made of a transparent polyvinyl chloride material.

[0171] As Figure 5 shown, the second injection tube unit 130 includes a second injection tube element 131 and a second connecting element 132. Among them, the first end of the second injection tube element 131 is in communication with the second end of the main tube unit 110 and is symmetrically arranged with the first injection tube unit 120, and is used for injecting a flushing liquid into the main tube unit 110 or injecting an air flow into the main tube unit 110; the second connecting element 132 is arranged at the second end of the second injection tube element 131 and is in communication with the second injection tube element 131, and is used for connecting an external injection device or a compressor.

[0172] Specifically, the first end of the second injection tube element 131 is in communication with the second inlet element 117.

[0173] In some of these embodiments, the second injection tube element 131 is fixedly connected to the main tube element 111, including but not limited to heat fusion connection.

[0174] The cross-section of the second injection tube element 131 is annular.

[0175] Generally, the radial dimension of the outer edge surface of the second injection tube element 131 is smaller than the radial dimension and the outer axial dimension of the outer edge surface of the main tube element 111.

[0176] Generally, the radial dimension of the inner edge surface of the second injection tube element 131 is equal to the radial dimension of the second inlet element 117.

[0177] Generally, the radial dimension of the second injection tube element 131 is equal to the radial dimension of the first injection tube element 121, and the axial dimension of the second injection tube element 131 is larger than the axial dimension of the first injection tube element 121.

[0178] In some of these embodiments, the second injection tube element 131 is made of a transparent polyurethane material.

[0179] In some of these embodiments, the second injection tube element 131 is the first injection tube.

[0180] In some of these embodiments, the second connecting element 132 includes a second injection joint, a second connecting band, and a second sealing cover. Among them, the second injection joint is disposed at the second end of the second injection tube element 131 and is in communication with the second injection tube element 131; the first end of the second connecting band is connected to the second end of the second injection joint; the second sealing cover is disposed at the second end of the second connecting band and is detachably connected to the second injection joint for sealing the second end of the second injection joint.

[0181] Generally, the minimum radial dimension of the outer edge surface of the second injection joint is greater than the radial dimension of the outer edge surface of the second injection tube element 131, the minimum radial dimension of the inner edge surface of the second injection joint is equal to the radial dimension of the inner edge surface of the second injection tube element 131, and the axial dimension of the second injection joint is less than the axial dimension of the second injection tube element 131.

[0182] Generally, the radial dimension of the second injection joint is equal to the radial dimension of the first injection joint, and the axial dimension of the second injection joint is equal to the axial dimension of the first injection joint.

[0183] Generally, the length of the second connecting band is greater than the maximum radial dimension of the outer edge surface of the second injection joint, the width of the second connecting band is less than the minimum radial dimension of the outer edge surface of the second injection joint, and the height (thickness) of the second connecting band is less than the axial dimension of the second injection joint.

[0184] Generally, the length of the second connecting band is equal to the length of the first connecting band, the width of the second connecting band is equal to the width of the first connecting band, and the height (thickness) of the second connecting band is equal to the height (thickness) of the first connecting band.

[0185] Generally, the maximum radial dimension of the second sealing cover is less than the length of the second connecting band, the minimum radial dimension of the second sealing cover is greater than the width of the second connecting band, and the axial dimension of the second sealing cover is greater than the height (thickness) of the second connecting band.

[0186] Generally, the minimum radial dimension of the second sealing cover is equal to the maximum radial dimension of the inner edge surface of the second injection joint, and the axial dimension of the second sealing cover is less than the axial dimension of the second injection joint.

[0187] Generally, the radial dimension of the second sealing cover is equal to the radial dimension of the first sealing cover, and the axial dimension of the second sealing cover is equal to the axial dimension of the first sealing cover.

[0188] In some of these embodiments, the second connecting element 132 is fixedly connected to the second injection tube element 131, including but not limited to hot melt connection.

[0189] In some of these embodiments, the second connecting element 132 is made of polyvinyl chloride transparent material.

[0190] The usage method of the present invention is as follows:

[0191] (I) Flushing

[0192] Insert the first end of the main pipe element 111 into the lesion;

[0193] Open the first connection element 122 and connect the first connection element 122 to an external first injection device;

[0194] Open the second connection element 132 and connect the second connection element 132 to an external second injection device;

[0195] Start the injection device to work and make it convey the flushing liquid;

[0196] During the process, the flushing liquid enters the first inner injection pipe element 115 through the first injection pipe element 121 and the first inlet element 114, and enters the inside of the lesion through the first outlet element 116 to flush the lesion;

[0197] The flushing liquid enters the second inner injection pipe element 118 through the second injection pipe element 131 and the second inlet element 117, and enters the inside of the lesion through the second outlet element 119 to flush the lesion.

[0198] (II) Unclog the main pipe element 111

[0199] Insert the negative pressure device into the main pipe element 111 until the first end (the end) of the negative pressure device is close to the first end (the end) of the main pipe element 111;

[0200] Start the negative pressure device to work, so that the liquid in the lesion enters the main pipe element 111 through the diversion element 112 and enters the negative pressure device;

[0201] Under the action of negative pressure, the liquid flows out to the outside of the lesion;

[0202] While generating negative pressure, through the setting of the first through groove element 113, the external air can flow into the lesion, so that the air pressure in the body can be balanced.

[0203] (III) Inflating

[0204] During minimally invasive endoscopic surgery, connect the first connection element 122 to an external first compressor and connect the second connection element 132 to an external second compressor;

[0205] Start the compressor to work and make it convey air flow;

[0206] During the process, the air flow enters the first inner injection tube element 115 through the first injection tube element 121 and the first inlet element 114, and enters the interior of the lesion through the first outlet element 116. After adding air pressure, it can support the narrow sandwich of the organ and the narrow part of the lower organ, solving the problem that the pipeline cannot be directly inserted into the wound surface and the affected area for flushing and drainage;

[0207] The air flow enters the second inner injection tube element 118 through the second injection tube element 131 and the second inlet element 117, and enters the interior of the lesion through the second outlet element 119. After adding air pressure, it can support the narrow sandwich of the organ and the narrow part of the lower organ, solving the problem that the pipeline cannot be directly inserted into the wound surface and the affected area for flushing and drainage.

[0208] (IV) Tube extraction (extracting the main tube element 111)

[0209] Pinch the main tube element 111 with the hand and apply force outward (away from the lesion), and slowly rotate (rotate left and backward) the main tube element 111 (during the process, the moving direction of the main tube element 111 forms a 90° angle. That is, the moving plane (rotation plane) of the main tube element 111 is perpendicular to the sinus tract) until it is extracted. At this time, a sinus tract (channel) is formed at the lesion. The sinus tract is formed for about at least 120 hours, and the sinus tract will not close within 2 hours after the main tube element 111 is extracted.

[0210] During the process, the outer wall of the main tube element 111 can be lubricated with normal saline.

[0211] (V) Tube implantation

[0212] Apply force to the new main tube element 111 inward (towards the lesion) along the original path (sinus tract), and slowly rotate (rotate left and backward) the main tube element 111 (during the process, the moving direction of the main tube element 111 forms a 90° angle. That is, the moving plane (rotation plane) of the main tube element 111 is perpendicular to the sinus tract) until it is inserted into the sinus tract;

[0213] During the process, the outer wall of the main tube element 111 can be lubricated with normal saline;

[0214] After tube implantation, the main tube element 111 needs to be rotated (rotated left and right along the circumference of the main tube element 111) within 72 hours to avoid granulation tissue from adhering to or embedding in the diversion element 112.

[0215] The advantages of the present invention are as follows:

[0216] 1. The main tube unit adopts a pneumatic balance design (with a first through slot element opened at a high position), which increases the comfort of the patient after catheter placement and avoids the suction and damage of the wound surface and surrounding tissues of the patient in a negative pressure state. The cooperation between the first outlet element and the second outlet element makes the first outlet element (irrigation hole) and the second outlet element (irrigation hole) on both sides of the flushing cavity path of the main tube element have one-way multi-row openings on the outer side, which can ensure sufficient flushing water volume and can also be adjusted according to the patient's condition. The first outlet element and the second outlet element on both sides are designed with high, medium, and low heights, which can effectively achieve 360° cleaning of the affected area and surrounding high, medium, and low parts in all directions, and thoroughly flush the wound surface and surrounding infected areas, effectively controlling the risk of secondary infection.

[0217] 2. The combined use of the first injection tube unit and the second injection tube unit can be used as a gas passage during laparoscopic minimally invasive surgery. After adding air pressure, it can support the organ stenosis sandwich and the low-position organ stenosis, solving the problem that the pipeline cannot be directly inserted into the wound surface and the affected area for flushing and drainage.

[0218] Embodiment 2

[0219] This embodiment is a modified embodiment of Embodiment 1.

[0220] In this embodiment, the first injection tube unit 120 is detachably connected to the main tube unit 110; the second injection tube unit 130 is detachably connected to the main tube unit 110.

[0221] As Figure 3a 、 Figure 3b shown, the main tube unit 110 further includes a first docking element 1110 and a second docking element 1111. Among them, the first end of the first docking element 1110 is communicated with the first inlet element 114, and the second end of the first docking element 1110 is detachably connected to the first injection tube unit 120; the first end of the second docking element 1111 is communicated with the second inlet element 117, and the second end of the second docking element 1111 is detachably connected to the second injection tube unit 130.

[0222] The cross-section of the first docking element 1110 is circular.

[0223] Generally, the radial dimension of the outer edge surface of the first docking element 1110 is smaller than the radial dimension of the outer edge surface of the main tube element 111, and the axial dimension of the first docking element 1110 is smaller than the axial dimension of the main tube element 111.

[0224] Generally, the radial dimension of the inner edge surface of the first docking element 1110 is equal to the radial dimension of the first inlet element 114.

[0225] In some of these embodiments, the first docking element 1110 is fixedly connected to the main pipe element 111, including but not limited to hot melt connection.

[0226] In some of these embodiments, the first docking element 1110 is made of polyvinyl chloride transparent material.

[0227] In some of these embodiments, the first docking element 1110 is a first docking pipe.

[0228] The cross-section of the second docking element 1111 is annular.

[0229] Generally, the radial dimension of the outer edge surface of the second docking element 1111 is smaller than the radial dimension of the outer edge surface of the main pipe element 111, and the axial dimension of the second docking element 1111 is smaller than the axial dimension of the main pipe element 111.

[0230] Generally, the radial dimension of the inner edge surface of the second docking element 1111 is equal to the radial dimension of the second inlet element 117.

[0231] Generally, the radial dimension of the second docking element 1111 is equal to the radial dimension of the first docking element 1110, and the axial dimension of the second docking element 1111 is equal to the axial dimension of the first docking element 1110.

[0232] In some of these embodiments, the second docking element 1111 is fixedly connected to the main pipe element 111, including but not limited to hot melt connection.

[0233] In some of these embodiments, the second docking element 1111 is made of polyvinyl chloride transparent material.

[0234] In some of these embodiments, the second docking element 1111 is a second docking pipe.

[0235] As Figure 4 shown, the first injection tube unit 120 further includes a third docking element 123. Wherein, the second end of the third docking element 123 is communicated with the first end of the first injection tube element 121, and the first end of the third docking element 123 is detachably connected to the main pipe unit 110.

[0236] Specifically, the first end of the third docking element 123 is detachably connected to the second end of the first docking element 1110 or to the first inner injection tube element 115.

[0237] The cross-section of the third docking element 123 is annular.

[0238] Generally, the radial dimension of the outer edge surface of the third docking element 123 is smaller than that of the outer edge surface of the first injection tube element 121, and the axial dimension of the third docking element 123 is smaller than that of the first injection tube element 121.

[0239] Generally, the radial dimension of the outer edge surface of the third docking element 123 is equal to the radial dimension of the inner edge surface of the first docking element 1110, and the axial dimension of the third docking element 123 is equal to the axial dimension of the first docking element 1110.

[0240] Generally, the radial dimension of the outer edge surface of the third docking element 123 is equal to the radial dimension of the first inner injection tube element 115, and the axial dimension of the third docking element 123 is smaller than that of the first inner injection tube element 115.

[0241] In some of these embodiments, the third docking element 123 is fixedly connected to the first injection tube element 121, including but not limited to being integrally formed.

[0242] In some of these embodiments, the third docking element 123 is made of a polyurethane transparent material.

[0243] In some of these embodiments, the third docking element 123 is a third docking tube.

[0244] As Figure 5 shown, the second injection tube unit 130 further includes a fourth docking element 133. Among them, the second end of the fourth docking element 133 is in communication with the first end of the second injection tube element 131, and the first end of the fourth docking element 133 is detachably connected to the main tube unit 110.

[0245] Specifically, the first end of the fourth docking element 133 is detachably connected to the second end of the second docking element 1111 or to the second inner injection tube element 118.

[0246] The cross-section of the fourth docking element 133 is in the shape of an annular ring.

[0247] Generally, the radial dimension of the outer edge surface of the fourth docking element 133 is smaller than that of the outer edge surface of the second injection tube element 131, and the axial dimension of the fourth docking element 133 is smaller than that of the second injection tube element 131.

[0248] Generally, the radial dimension of the outer edge surface of the fourth docking element 133 is equal to the radial dimension of the inner edge surface of the second docking element 1111, and the axial dimension of the fourth docking element 133 is equal to the axial dimension of the second docking element 1111.

[0249] Generally, the radial dimension of the outer edge surface of the fourth docking element 133 is equal to the radial dimension of the second inner injection tube element 118, and the axial dimension of the fourth docking element 133 is less than the axial dimension of the second inner injection tube element 118.

[0250] In some of these embodiments, the fourth docking element 133 is fixedly connected to the second injection tube element 131, including but not limited to being integrally formed.

[0251] In some of these embodiments, the fourth docking element 133 is made of a polyurethane transparent material.

[0252] In some of these embodiments, the fourth docking element 133 is a fourth docking tube.

[0253] The usage method of the present invention is as follows:

[0254] (1) Cutting the tube (after catheter placement, according to the alleviation of the disease course, for the main tube element 111)

[0255] Remove the negative pressure device from the main tube element 111;

[0256] Remove the first injection tube element 121 from the first docking element 1110 by the third docking element 123;

[0257] Remove the second injection tube element 131 from the second docking element 1111 by the fourth docking element 133;

[0258] Use scissors to correspondingly cut the main tube element 111 (the first end of the main tube element 111) exposed outside the body to cut it to an appropriate length.

[0259] (2) Installation

[0260] Insert the first injection tube element 121 into the first inner injection tube element 115 through the third docking element 123;

[0261] Insert the second injection tube element 131 into the second inner injection tube element 118 through the fourth docking element 133.

[0262] (3) Flushing

[0263] It is basically the same as the usage method (1) of Embodiment 1 and will not be elaborated here.

[0264] (4) Unclogging the main tube element 111

[0265] It is basically the same as the usage method (2) of Embodiment 1 and will not be elaborated here.

[0266] (5) Inflating

[0267] It is basically the same as the usage method (3) of Embodiment 1 and will not be elaborated here.

[0268] The advantages of the present invention are that the cooperation between the main pipe unit, the first injection pipe unit and the second injection pipe unit enables the flushing and drainage device to cut the pipe to a suitable length according to the surgical procedure and the specific conditions of the patient, and can also cut the pipe to a suitable length according to the alleviation of the disease course, and the flushing and drainage effect is not affected after cutting.

[0269] Embodiment 3

[0270] This embodiment relates to the flushing and drainage system of the present utility model

[0271] As Figure 6 shown, a flushing and drainage system includes a flushing and drainage device 100 and an inner tube device 200 as described in Embodiments 1 to 2. Among them, the first end of the inner tube device 200 is removably disposed inside the main pipe unit 110 of the flushing and drainage device 100 and is used to communicate with a negative pressure device to drain the negative pressure generated externally to the main pipe unit 110.

[0272] As Figure 8 shown, the inner tube device 200 includes an inner tube element 201, a first clamping element 202 and a third connecting element 203. Among them, the first end of the inner tube element 201 is removably disposed inside the main pipe unit 110 of the flushing and drainage device 100 and is used to drain the negative pressure generated externally to the main pipe unit 110; the first clamping element 202 is connected to the inner tube element 201 and is detachably connected to the main pipe unit 110 of the flushing and drainage device 100; the third connecting element 203 is disposed at the second end of the inner tube element 201 and is in communication with the inner tube element 201 and is used to communicate with a negative pressure device.

[0273] Specifically, the first end of the inner tube element 201 is removably disposed inside the main pipe element 111 of the flushing and drainage device 100; the first clamping element 202 abuts against the main pipe element 111 of the flushing and drainage device 100.

[0274] Generally, the first end of the inner tube element 201 is disposed close to the first end of the main pipe element 111.

[0275] The cross section of the inner tube element 201 is in a circular ring shape.

[0276] Generally, the radial dimension of the outer edge surface of the inner tube element 201 is smaller than the radial dimension of the inner edge surface of the main pipe element 111, and the axial dimension of the inner tube element 201 is larger than the outer axial dimension of the main pipe element 111.

[0277] In some of these embodiments, the inner tube element 201 is made of a polyvinyl chloride transparent material.

[0278] In some of these embodiments, the inner tube element 201 is an inner tube.

[0279] In some of these embodiments, the first clamping element 202 includes a first circular column and a plurality of first clamping blocks. Among them, the first circular column is connected to the inner tube element 201; the plurality of first clamping blocks are distributed at the outer end of the first circular column and are in contact with the main tube element 111.

[0280] In some of these embodiments, the plurality of first clamping blocks are arranged at equal intervals along the circumferential direction of the first circular column.

[0281] Generally, the radial dimension of the inner edge surface of the first circular column is equal to the radial dimension of the outer edge surface of the inner tube element 201, and the axial dimension of the first circular column is smaller than the axial dimension of the inner tube element 201.

[0282] Generally, the radial dimension of the outer edge surface of the first circular column is smaller than the radial dimension of the inner edge surface of the main tube element 111.

[0283] Generally, the radial dimension of the outer edge surface of the first clamping block is larger than the radial dimension of the outer edge surface of the first circular column, and the axial dimension of the first clamping block is equal to the axial dimension of the first circular column.

[0284] Among them, the sum of the radial dimension of the outer edge surface of the first clamping block and the radial dimension of the outer edge surface of the first circular column is not less than the radial dimension of the inner edge surface of the main tube element 111.

[0285] In some of these embodiments, the first clamping element 202 is fixedly connected to the inner tube element 201, including but not limited to hot melt connection.

[0286] In some of these embodiments, the first clamping element 202 is made of polyvinyl chloride transparent material.

[0287] The cross-section of the third connecting element 203 is in the shape of a circular ring.

[0288] Generally, the radial dimension of the outer edge surface of the third connecting element 203 is larger than the radial dimension of the outer edge surface of the inner tube element 201, the radial dimension of the inner edge surface of the third connecting element 203 is equal to the radial dimension of the inner edge surface of the inner tube element 201, and the axial dimension of the third connecting element 203 is larger than the axial dimension of the inner tube element 201.

[0289] In some of these embodiments, the third connecting element 203 is fixedly connected to the inner tube element 201, including but not limited to hot melt connection.

[0290] In some of these embodiments, the third connecting element 203 is made of acrylonitrile-butadiene-styrene plastic.

[0291] In some of these embodiments, the third connecting element 203 is a negative pressure joint.

[0292] The usage method of the present invention is as follows:

[0293] (I) Flushing

[0294] It is basically the same as the usage method (I) of Embodiment 1 to Embodiment 2, and will not be elaborated here.

[0295] (II) Unclogging the main pipe element 111

[0296] Insert the inner pipe element 201 into the main pipe element 111 until the first end of the inner pipe element 201 is close to the first end (the end) of the main pipe element 111, and abut against the inner wall of the second end of the main pipe element 111 through the first clamping element 202;

[0297] Connect the third connecting element 203 to an external negative pressure device;

[0298] Start the negative pressure device to work, so that the liquid in the lesion enters the main pipe element 111 through the diversion element 112 and enters the inner pipe element 201;

[0299] Under the action of negative pressure, the liquid flows out to the outside of the lesion;

[0300] While generating negative pressure, due to the gap generated by the first clamping element 202 and the main pipe element 111 and the setting of the first through groove element 113, external air can flow into the lesion, so that the air pressure in the body can be balanced;

[0301] During the process, in case of slight blockage, the inner pipe element 201 can be repeatedly pulled (reciprocating movement along the axial direction of the main pipe element 111) to achieve dredging;

[0302] When the blockage is serious, the inner pipe element 201 can be taken out, and the third connecting element 203 is connected to an external syringe, and the syringe is started to work to deliver high-pressure physiological saline to the inner pipe element 201 until the blockage in the inner pipe element 201 is flushed out.

[0303] (III) Inflating

[0304] It is basically the same as the usage method (III) of Embodiment 1 to Embodiment 2, and will not be elaborated here.

[0305] (IV) Pipe cutting (pipe cutting operations on the main pipe element 111 and the inner pipe element 201 according to the alleviation of the disease course after catheterization)

[0306] Take out the inner pipe element 201 from the main pipe element 111;

[0307] Take out the first injection pipe element 121 from the first docking element 1110 by the third docking element 123;

[0308] Remove the second syringe tube element 131 from the second docking element 1111 by the fourth docking element 133;

[0309] Correspondingly cut the main tube element 111 (the first end of the main tube element 111) exposed outside the body with scissors to cut it to an appropriate length;

[0310] Correspondingly cut the inner tube element 201 (the second end of the inner tube element 201) with scissors to cut it to an appropriate length;

[0311] (V) Installation

[0312] Insert the first syringe tube element 121 into the first inner syringe tube element 115 through the third docking element 123;

[0313] Insert the second syringe tube element 131 into the second inner syringe tube element 118 through the fourth docking element 133;

[0314] Insert the cut inner tube element 201 into the main tube element 111 and abut it against the inner wall of the second end of the main tube element 111 through the first clamping element 202.

[0315] The advantages of the present invention are that the cooperation between the main tube unit and the inner tube device enables the flushing and drainage device to adopt a pneumatic balance design (adopting the first docking with a triangular cross-section support structure, so that the external air pressure can be balanced with the air pressure inside the main tube unit), increasing the comfort of the patient after catheterization and avoiding the wound surface and surrounding tissues of the patient from being sucked and damaged under negative pressure; the first end (the end) of the inner tube device is close to the first end (the end) of the main tube unit, so that under negative pressure, the negative pressure attraction is concentrated at the port of the first end (the end) of the inner tube device, making the osmotic side holes (diversion elements) on the main tube unit have no negative pressure attraction, and the blood oozing, fluid accumulation and residues around the main tube unit can be introduced by gravity and the natural pressure of the human body, solving the problems of the surface of the viscera being sucked and damaged and granulation tissue being embedded under negative pressure.

[0316] Example 4

[0317] This example is a variant example of Example 3.

[0318] As Figure 7 shown, a flushing and drainage system includes the flushing and drainage device 100 and the negative pressure drainage device 300 as described in Examples 1 to 2. Among them, the first end of the negative pressure drainage device 300 is removably arranged inside the main tube unit 110 of the flushing and drainage device 100, and the second end of the negative pressure drainage device 300 is located outside the main tube unit 110, used to generate negative pressure and drain the negative pressure to the main tube unit 110.

[0319] In this embodiment, the main pipe unit 110 is used only when an external power source (negative pressure device) needs to be used.

[0320] As Figure 9a , Figure 9b , Figure 9c shown, the negative pressure drainage device 300 includes a drainage pipe element 301, a second clamping element 302, a valve element 303, a negative pressure element 304, a second through groove element 305, a locking element 306, a third through groove element 307, and a sealing element 308. Among them, the first end of the drainage pipe element 301 is removably disposed inside the main pipe unit 110 of the flushing and drainage device 100, and the second end of the drainage pipe element 301 is located outside the main pipe unit 110 of the flushing and drainage device 100 for draining the generated negative pressure to the main pipe unit 110; the second clamping element 302 is connected to the drainage pipe element 301 and is detachably connected to the main pipe unit 110 of the flushing and drainage device 100; the valve element 303 is disposed at the second end of the drainage pipe element 301 and is communicated with the drainage pipe element 301 for controlling the flow direction; the negative pressure element 304 is disposed at the second end of the drainage pipe element 301, and a valve element 303 is disposed inside the negative pressure element 304 for generating negative pressure to collect the drainage into the negative pressure element 304; the second through groove element 305 is disposed at the first end of the negative pressure element 304 for allowing the valve element 303 to pass through; the locking element 306 is detachably disposed on the valve element 303 and abuts against the first end of the negative pressure element 304 for fixing the valve element 303 firmly on the negative pressure element 304; the third through groove element 307 is disposed at the second end of the negative pressure element 304 for allowing the drainage to be discharged; the sealing element 308 is removably disposed on the third through groove element 307 for sealing the third through groove element 307.

[0321] Specifically, the first end of the drainage pipe element 301 is detachably disposed inside the second end of the main pipe element 111; the second clamping element 302 abuts against the main pipe element 111.

[0322] The cross-section of the drainage pipe element 301 is circular.

[0323] Generally, the radial dimension of the outer edge surface of the drainage pipe element 301 is smaller than the radial dimension of the inner edge surface of the main pipe element 111, and the axial dimension of the drainage pipe element 301 is larger than the outer axial dimension of the main pipe element 111.

[0324] In some of these embodiments, the drainage pipe element 301 is made of a polyvinyl chloride transparent material.

[0325] In some of these embodiments, the drainage pipe element 301 is a drainage pipe.

[0326] In some of these embodiments, the second clamping element 302 includes a second circular column and a plurality of second clamping blocks. Among them, the second circular column is connected to the drainage tube element 301; the plurality of second clamping blocks are distributed at the outer end of the second circular column and are in contact with the main pipe element 111.

[0327] In some of these embodiments, the plurality of second clamping blocks are arranged at equal intervals along the circumferential direction of the second circular column.

[0328] Generally, the radial dimension of the inner edge surface of the second circular column is equal to the radial dimension of the outer edge surface of the drainage tube element 301, and the axial dimension of the second circular column is smaller than the axial dimension of the drainage tube element 301.

[0329] Generally, the radial dimension of the outer edge surface of the second circular column is smaller than the radial dimension of the inner edge surface of the main pipe element 111.

[0330] The size of the second clamping block matches the size of the second circular column. Generally, the radial dimension of the outer edge surface of the second clamping block is larger than the radial dimension of the outer edge surface of the second circular column, and the axial dimension of the second clamping block is equal to the axial dimension of the second circular column.

[0331] Among them, the sum of the radial dimension of the outer edge surface of the second clamping block and the radial dimension of the outer edge surface of the second circular column is not less than the radial dimension of the inner edge surface of the main pipe element 111.

[0332] In some of these embodiments, the second clamping element 302 is fixedly connected to the drainage tube element 301, including but not limited to hot melt connection.

[0333] In some of these embodiments, the second clamping element 302 is made of polyvinyl chloride transparent material.

[0334] In some of these embodiments, the valve element 303 is fixedly connected to the drainage tube element 301, including but not limited to plugging.

[0335] In some of these embodiments, the valve element 303 is a one-way valve.

[0336] The negative pressure element 304 is a hollow structure, and the cross-section of the negative pressure element 304 is elliptical.

[0337] Generally, the radial dimension of the negative pressure element 304 is larger than the radial dimension of the outer edge surface of the drainage tube element 301, and the outer axial dimension of the negative pressure element 304 is smaller than the axial dimension of the drainage tube element 301.

[0338] In some of these embodiments, the negative pressure element 304 is made of polyvinyl chloride transparent material.

[0339] In some of these embodiments, the negative pressure element 304 is a negative pressure ball.

[0340] The cross-section of the second through-groove element 305 is circular.

[0341] Generally, the radial dimension of the second through-groove element 305 is smaller than the maximum radial dimension of the inner edge surface of the negative pressure element 304, and the axial dimension of the second through-groove element 305 is equal to the inner wall thickness of the negative pressure element 304.

[0342] Generally, the radial dimension of the second through-groove element 305 is not smaller than the minimum radial dimension of the valve element 303, and the axial dimension of the second through-groove element 305 is smaller than the axial dimension of the valve element 303.

[0343] In some of these embodiments, the second through-groove element 305 is the first through-groove.

[0344] The locking element 306 has a structure with openings at both ends.

[0345] In some of these embodiments, the locking element 306 is detachably connected to the valve element 303. For example, the locking element 306 and the valve element 303 are threadedly connected.

[0346] In some of these embodiments, the locking element 306 is made of plastic material.

[0347] In some of these embodiments, the locking element 306 is a locking cap.

[0348] The cross-section of the third through-groove element 307 is circular.

[0349] Generally, the radial dimension of the third through-groove element 307 is smaller than the maximum radial dimension of the inner edge surface of the negative pressure element 304, and the axial dimension of the third through-groove element 307 is equal to the inner wall thickness of the negative pressure element 304.

[0350] In some of these embodiments, the third through-groove element 307 is the second through-groove.

[0351] The closing element 308 includes a connecting pipe, a third connecting band, and a third sealing cap. Among them, the connecting pipe is arranged at the second end of the negative pressure element 304 and is in communication with the third through-groove element 307; the first end of the third connecting band is connected to the second end of the connecting pipe; the third sealing cap is arranged at the second end of the third connecting band and is detachably connected to the connecting pipe for sealing the second end of the connecting pipe.

[0352] Generally, the radial dimension of the outer edge surface of the connecting pipe is smaller than the maximum radial dimension of the outer edge surface of the negative pressure element 304, and the axial dimension of the connecting pipe is smaller than the axial dimension outside the negative pressure element 304.

[0353] The dimensions of the connecting pipe match the dimensions of the third through-groove element 307. Generally, the radial dimension of the inner edge surface of the connecting pipe is equal to the radial dimension of the third through-groove element 307.

[0354] Generally, the radial dimension of the third connecting band is smaller than the radial and axial dimensions of the outer edge surface of the connecting pipe, and the axial dimension of the third connecting band is larger than the axial dimension of the connecting pipe.

[0355] Generally, the radial dimension of the third sealing cover is larger than the radial dimension of the third connecting band.

[0356] Generally, the minimum radial dimension of the third sealing cover is equal to the radial dimension of the inner edge surface of the connecting pipe, and the axial dimension of the third sealing cover is larger than the axial dimension of the connecting pipe.

[0357] In some of these embodiments, the closing element 308 is fixedly connected to the negative pressure element 304, including but not limited to heat fusion connection.

[0358] In some of these embodiments, the closing element 308 is made of polyvinyl chloride transparent material.

[0359] The usage method of the present invention is as follows:

[0360] (1) Flushing

[0361] It is basically the same as the usage method (1) of Embodiment 1 to Embodiment 2, and will not be elaborated here.

[0362] (2) Unclogging the main pipe element 111

[0363] Insert the drainage pipe element 301 into the main pipe element 111 until the first end of the drainage pipe element 301 approaches the first end (the end) of the main pipe element 111, and abut against the inner wall of the second end of the main pipe element 111 through the second clamping element 302;

[0364] Open the closing element 308 to expose the third through groove element 307;

[0365] After pinching the negative pressure element 304 flat by hand, seal the third through groove element 307 through the closing element 308. At this time, the negative pressure element 304 is in a negative pressure state;

[0366] Release the negative pressure element 304, so that the liquid in the lesion enters the main pipe element 111 through the diversion element 112 and enters the drainage pipe element 301;

[0367] Under the action of the negative pressure element 304 (negative pressure), the liquid flows out to the outside of the lesion and flows into the negative pressure element 304;

[0368] While generating negative pressure, due to the gap generated by the second clamping element 302 and the main pipe element 111 and the setting of the first through groove element 113, external air can flow into the lesion, so that the air pressure in the body is balanced.

[0369] (3) Inflating

[0370] It is basically the same as the usage method (3) of Embodiment 1 to Embodiment 2, and will not be elaborated here.

[0371] (4) Tube cutting (After catheter placement, perform tube cutting operations on the main tube element 111 and the drainage tube element 301 according to the alleviation of the disease course)

[0372] Take out the drainage tube element 301 from the main tube element 111;

[0373] Take out the first syringe tube element 121 from the first docking element 1110 by the third docking element 123;

[0374] Take out the second syringe tube element 131 from the second docking element 1111 by the fourth docking element 133;

[0375] Use scissors to correspondingly cut the main tube element 111 (the first end of the main tube element 111) exposed outside the body to cut it to an appropriate length;

[0376] Use scissors to correspondingly cut the drainage tube element 301 (the second end of the drainage tube element 301) to cut it to an appropriate length;

[0377] (5) Installation

[0378] Insert the first syringe tube element 121 into the first inner syringe tube element 115 through the third docking element 123;

[0379] Insert the second syringe tube element 131 into the second inner syringe tube element 118 through the fourth docking element 133;

[0380] Insert the cut drainage tube element 301 into the main tube element 111, and make it abut against the inner wall of the second end of the main tube element 111 through the second clamping element 302.

[0381] (6) Drainage bag conversion

[0382] During the process when the patient can walk or be transferred, the drainage bag can be inserted into the main tube element 111 until the first end of the drainage bag is close to the first end (the end) of the main tube element 111, so that the effusion in the lesion can be drained into the drainage bag.

[0383] The advantage of the present invention is that by using the negative pressure drainage device in cooperation, the flushing and drainage device is a replaceable inner tube and negative pressure kit. It is stable and reliable. Under the condition of not needing to replace the outer tube, the switching problem of the inner tube and the negative pressure kit can be quickly and effectively solved.

[0384] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A flushing and drainage device, characterized in that, Comprising: A main pipe unit, with the first end of the main pipe unit located at the lesion site and the second end of the main pipe unit located outside the body; A first injection pipe unit, which is arranged on one side of the main pipe unit. The first end of the first injection pipe unit is communicated with the second end of the main pipe unit, and is used to be communicated with an injection device or a compressor to inject a flushing liquid into the main pipe unit or inject an air flow into the main pipe unit; A second injection pipe unit, which is arranged on the other side of the main pipe unit. The first end of the second injection pipe unit is communicated with the second end of the main pipe unit, and is used to be communicated with an injection device or a compressor to inject a flushing liquid into the main pipe unit or inject an air flow into the main pipe unit; Wherein, the outlet position of the main pipe unit for the first injection pipe unit is different from the outlet position of the main pipe unit for the second injection pipe unit, and / or the outlet density of the main pipe unit for the first injection pipe unit is different from the outlet density of the main pipe unit for the second injection pipe unit.

2. The flushing and drainage device according to claim 1, characterized in that The main pipe unit includes: A main pipe element, with the first end of the main pipe element located at the lesion site and the second end of the main pipe element located outside the body, and is respectively connected to the first injection pipe unit and the second injection pipe unit; A number of diversion elements, which are distributed at the first end of the main pipe element and are used to divert the drainage in the lesion to the main pipe element; A number of first through groove elements, which are distributed in the middle of the main pipe element and are used to allow external air to enter the main pipe element; A first inlet element, which is arranged on the first side of the second end of the main pipe element and is communicated with the first injection pipe unit, and is used to input a flushing liquid or an air flow; A first inner injection pipe element, which is arranged inside the main pipe element and is communicated with the first inlet element; A number of first outlet elements, which are distributed at the first end of the main pipe element and are respectively communicated with the first inner injection pipe element, and are used to output a flushing liquid or an air flow; A second inlet element, which is arranged on the second side of the second end of the main pipe element and is communicated with the second injection pipe unit, and is used to input a flushing liquid or an air flow; A second inner injection pipe element, which is arranged inside the main pipe element and is communicated with the second inlet element; A number of second outlet elements, which are distributed at the first end of the main pipe element and are respectively communicated with the second inner injection pipe element. The positions of the number of second outlet elements are different from the positions of the number of first outlet elements, and are used to output a flushing liquid or an air flow.

3. The flushing and drainage device according to claim 2, wherein, The main pipe unit further includes: A first docking element, with the first end of the first docking element communicated with the first inlet element, and the second end of the first docking element is detachably connected to the first injection pipe unit; and / or A second docking element, a first end of the second docking element is in communication with the second inlet element, and a second end of the second docking element is detachably connected to the second injection tube unit.

4. The flushing and drainage device according to claim 2, wherein A plurality of the first through-channel elements are arranged along the axial direction and / or the circumferential direction of the main tube element; and / or A plurality of the first through-channel elements are arranged in a staggered manner.

5. The flushing and drainage device according to claim 2, wherein A plurality of the first outlet elements are arranged at intervals along the axial direction and / or the circumferential direction of the main tube element; and / or A plurality of the first outlet elements are arranged in a staggered manner; and / or A plurality of the second outlet elements are arranged at intervals along the axial direction and / or the circumferential direction of the main tube element; and / or A plurality of the second outlet elements are arranged in a staggered manner; and / or The distribution density of the first outlet elements is different from the distribution density of the second outlet elements.

6. The flushing and drainage device according to claim 1, wherein The first injection tube unit includes: A first injection tube element, a first end of the first injection tube element is in communication with a second end of the main tube unit, and is used for injecting a flushing liquid into the main tube unit or injecting an air flow into the main tube unit; A first connection element, the first connection element is arranged at a second end of the first injection tube element and is in communication with the first injection tube element, and is used for connecting an external injection device or a compressor; and / or The second injection tube unit includes: A second injection tube element, a first end of the second injection tube element is in communication with a second end of the main tube unit and is symmetrically arranged with the first injection tube unit, and is used for injecting a flushing liquid into the main tube unit or injecting an air flow into the main tube unit; A second connection element, the second connection element is arranged at a second end of the second injection tube element and is in communication with the second injection tube element, and is used for connecting an external injection device or a compressor.

7. The flushing and drainage device according to claim 6, wherein The first injection tube unit further includes: A third docking element, a second end of the third docking element is in communication with a first end of the first injection tube element, and a first end of the third docking element is detachably connected to the main tube unit; and / or The second injection tube unit further includes: A fourth docking element, a second end of the fourth docking element is in communication with a first end of the second injection tube element, and a first end of the fourth docking element is detachably connected to the main tube unit.

8. A flushing and drainage system, characterized in that, Comprising: The flushing and drainage device according to any one of claims 1 to 7; An inner tube device, a first end of the inner tube device is removably arranged inside the main tube unit of the flushing and drainage device, and is used for being in communication with a negative pressure device to drain the negative pressure generated externally to the main tube unit; A negative pressure drainage device, a first end of the negative pressure drainage device is removably arranged inside the main tube unit of the flushing and drainage device, and a second end of the negative pressure drainage device is located outside the main tube unit, and is used for generating a negative pressure and draining the negative pressure to the main tube unit.

9. The flushing and drainage system according to claim 8, characterized in that, The inner tube device includes: An inner tube element, a first end of the inner tube element is removably arranged inside the main tube unit of the flushing and drainage device, and is used for draining the negative pressure generated externally to the main tube unit; A first clamping element, the first clamping element is connected to the inner tube element and is detachably connected to the main tube unit of the flushing and drainage device; A third connecting element, which is arranged at the second end of the inner tube element and is in communication with the inner tube element, for communicating with a negative pressure device.

10. The flushing and drainage system according to claim 8, wherein The negative pressure drainage device includes: A drainage tube element, the first end of which is removably arranged inside the main tube unit of the flushing and drainage device, and the second end of the drainage tube element is located outside the main tube unit of the flushing and drainage device, for draining the generated negative pressure to the main tube unit; A second clamping element, which is connected to the drainage tube element and is detachably connected to the main tube unit of the flushing and drainage device; A valve element, which is arranged at the second end of the drainage tube element and is in communication with the drainage tube element, for controlling the flow direction; A negative pressure element, which is arranged at the second end of the drainage tube element, and the valve element is arranged inside the negative pressure element, for generating negative pressure to collect the drainage to the negative pressure element; A second through groove element, which is arranged at the first end of the negative pressure element, for the valve element to pass through; A locking element, which is detachably arranged on the valve element and abuts against the first end of the negative pressure element, for fixing the valve element firmly in the negative pressure element; A third through groove element, which is arranged at the second end of the negative pressure element, for the drainage to be discharged; A sealing element, which is removably arranged on the third through groove element, for sealing the third through groove element.

Images