Intraluminal negative pressure flushing drainage device

Abstract

The invention discloses an intraluminal negative pressure flushing drainage device which comprises a drainage outer sleeve, a built-in flushing tube and a negative pressure suction tube. A drainage channel is arranged in the drainage outer sleeve, a tube head is arranged at one end of the drainage outer sleeve, a sponge piece is sleeved on the drainage outer sleeve, a flushing channel is arranged on the drainage outer sleeve, the built-in flushing tube is embedded in the flushing channel, the built-in flushing tube is provided with a flushing hole, and a water outlet is arranged on the outer wall of the drainage outer sleeve. The negative pressure suction tube is inserted into the drainage channel, a suction hole is formed in one end of the negative pressure suction tube, and a drainage hole is formed in the drainage outer sleeve. The device can be placed at a ventage through a natural orifice, and lumen liquid is prevented from overflowing out of a lumen through low-flow normal saline flushing and continuous low-negative-pressure suction. By using the device, the chance of lacuna infection caused by the ventage can be greatly reduced, the ventage can be healed as soon as possible due to the fact that digestive juice is prevented from overflowing through the ventage, the treatment course of a patient can be shortened, the medical cost is reduced, and dangerous complications are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an intraluminal negative pressure flushing and drainage device. Background Art

[0002] Gastrointestinal leakage is a serious surgical disease. Its main pathological process is that digestive fluid overflows into the abdominal cavity, thoracic cavity or retroperitoneal space through the damaged part of the digestive tract wall (such as digestive tract perforation, traumatic rupture, poor healing of surgical anastomosis, etc.), leading to serious infectious complications. If not treated in time, digestive tract leakage may lead to the death of the patient.

[0003] At present, commonly used clinical treatment methods include surgical and non-surgical treatments, and establishing unobstructed drainage is a key step in the treatment process. In non-surgical treatment, active flushing negative pressure suction device is considered to be an effective treatment method, and its working principle is as follows:

[0004] 1. Negative pressure suction: Through the active low-negative pressure suction device, the digestive fluid overflowing near the leak and the inflammatory exudate or tissue caused by it can be drained out of the body in time, reducing the chance of persistent infection due to the accumulation of digestive fluid near the leak.

[0005] 2. Continuous flushing: Continuously flushing with an appropriate amount of normal saline near the leak can not only clean the contaminated tissue, but also help drain the leaked digestive fluid and infected necrotic tissue and other contaminated tissues out of the body, creating conditions for the healing of the leak.

[0006] Although active flushing negative pressure suction devices are widely used in clinical practice, this method still has the following major drawbacks:

[0007] Poor drainage effect:

[0008] The drainage device may be poorly placed or displaced later, resulting in poor drainage.

[0009] Excessive deposits or necrotic tissue embedded in the duct will also affect the drainage effect.

[0010] Poor drainage can cause digestive fluid and infected substances to accumulate near the leak, increasing the risk of infection and delaying the healing of the leak.

[0011] Therefore, an intraluminal negative pressure flushing and drainage device is proposed to solve the current deficiencies. Summary of the invention

[0012] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned technology and provide an intraluminal negative pressure flushing and drainage device.

[0013] In order to solve the above technical problems, the technical solution provided by the present invention is an intraluminal negative pressure flushing and drainage device: comprising a drainage outer sleeve, a built-in flushing tube and a negative pressure suction tube;

[0014] A drainage channel is coaxially arranged in the drainage outer sleeve, a tube head is arranged at one end of the drainage outer sleeve, an elliptical column-shaped sponge piece is sleeved on the drainage outer sleeve, a flushing channel extending to the sponge piece is arranged on the side wall of the drainage outer sleeve, the built-in flushing tube is embedded in the flushing channel and the other end thereof passes through the side wall of the drainage outer sleeve away from the tube head end, a flushing hole is arranged on the built-in flushing tube at the sponge piece, and a water outlet matching the flushing hole is arranged on the outer wall of the drainage outer sleeve;

[0015] The negative pressure suction tube is inserted into the drainage channel and one end of the negative pressure suction tube close to the tube head extends to the sponge part. The end of the negative pressure suction tube close to the tube head is circumferentially provided with a plurality of suction holes, and the drainage outer sleeve is provided with a plurality of drainage holes at the sponge part.

[0016] As an improvement, the sponge member is provided with a plurality of through holes along the circumferential direction of its axis, the side wall of the sponge member is provided with a plurality of small holes penetrating the side wall, and the sponge member is embedded with a radiation-proof marking line.

[0017] As an improvement, the distance between the sponge piece and the tube head is 30 cm.

[0018] As an improvement, a plurality of drainage holes 2 are provided at one end of the drainage outer sleeve close to the tube head.

[0019] As an improvement, the sponge piece is in contact with the tube head of the drainage outer sleeve.

[0020] As an improvement, the tube head is plugged into the drainage outer sleeve, the side wall of the tube head is a hollow space, a slot is provided in the tube head for plugging with the negative pressure suction tube and connected to the hollow space, and a plurality of through holes 2 connected to the hollow space are provided on the outer wall of the tube head.

[0021] As an improvement, the negative pressure suction tube is provided with scale lines.

[0022] As an improvement, the sponge member is selected from medical sponge.

[0023] As an improvement, the ends of the built-in flushing tube and the negative pressure suction tube away from the tube head are provided with an infusion cap.

[0024] As an improvement, it also includes a metal guide wire, which is arranged in the drainage channel and connected to the tube head.

[0025] The advantages of the present invention compared with the prior art are:

[0026] 1. Strong adaptability and high safety:

[0027] The drainage overtube is made of soft tube, which can be easily bent to adapt to the natural and physiological curvature of the human lumen, avoiding mechanical damage to the lumen and significantly reducing the risk of complications. At the same time, the setting of the spherical tube head effectively reduces the friction resistance with the inner wall of the lumen, making the insertion of the drainage overtube smoother and improving the comfort of the patient;

[0028] 2. Efficient flushing and drainage:

[0029] The design of the elliptical sponge can ensure that the drainage outer tube can be smoothly inserted through the nostrils and pass smoothly when moving in the tube cavity, and can also appropriately support the intestinal cavity space, avoiding the collapse of the digestive cavity under negative pressure suction; at the same time, the porous structure of the sponge promotes the uniform distribution of the flushing liquid, improves the comprehensiveness of the flushing, and is also conducive to the active suction of tissue fragments from the negative pressure suction tube, thereby improving the efficiency of flushing and drainage;

[0030] 3. Flexibility in positioning and adjustment:

[0031] The negative pressure suction tube can be freely adjusted in the drainage channel. Medical staff can adjust the insertion depth of the negative pressure suction tube under the guidance of imaging technology according to the patient's specific situation and treatment needs. The scale lines on the negative pressure suction tube help medical staff accurately judge the insertion depth and ensure that its end is in the target position, achieving precise positioning.

[0032] 4. All-round attraction and drainage:

[0033] The suction holes evenly distributed around the negative pressure suction tube, the drainage holes set on the drainage outer sleeve, the channels distributed along the long axis of the sponge and the small holes on the side wall and the loose structure of the sponge can achieve all-round flushing and suction of the diseased part of the digestive tract lumen, and can almost completely prevent the digestive fluid and flushing water at the leak from overflowing out of the lumen. This design can extend the effective working time of the negative pressure suction device in the body;

[0034] 5. Easy to operate and maintain:

[0035] The embedded design of the built-in flushing tube and the negative pressure suction tube makes the device structure more compact, reduces the overall volume and occupied space, and avoids mutual interference between the two, improving the stability and reliability of the device. The design of the infusion cap is convenient for connection with an external flushing liquid source or a negative pressure suction device, and the operation is simple and fast; the guidance of the metal guide wire improves the accuracy of the drainage outer cannula insertion, allowing it to reach the target position more accurately;

[0036] 6. The device has a simple structure and is easy to use. It can be placed at the leak through a natural cavity or an unnatural route, and low-flow saline flushing and continuous low-negative pressure suction can be used to prevent the digestive fluid in the digestive tract from overflowing out of the lumen. The use of this device can not only greatly reduce the chance of cavity infection caused by the leak, but also help the leak heal as soon as possible by blocking the overflow of digestive fluid in the lumen through the leak, which can shorten the patient's treatment course, reduce medical expenses, and reduce dangerous complications. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the front structure of an intraluminal negative pressure flushing and drainage device of the present invention.

[0038] Figure 2 It is a schematic diagram of the rear structure of an intraluminal negative pressure flushing and drainage device of the present invention.

[0039] Figure 3 The present invention is a bottom view of an intraluminal negative pressure flushing and drainage device.

[0040] Figure 4 yes Figure 3 Cross-sectional view at AA in the middle.

[0041] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle.

[0042] Figure 6 It is a structural schematic diagram of another embodiment of an intraluminal negative pressure flushing and drainage device of the present invention.

[0043] Figure 7 It is a bottom view of another embodiment of an intraluminal negative pressure flushing and drainage device of the present invention.

[0044] Figure 8 yes Figure 7 Cross-sectional view at CC.

[0045] Fig. 9 yes Figure 8 A partial enlarged view of point D in the middle.

[0046] Fig.10 It is a structural schematic diagram of a built-in flushing tube in an intraluminal negative pressure flushing and drainage device of the present invention.

[0047] As shown in the figure: 1. Drainage outer sleeve, 2. Built-in flushing tube, 3. Negative pressure suction tube, 4. Drainage channel, 5. Tube head, 6. Sponge, 7. Flushing channel, 8. Flushing hole, 9. Water outlet, 10. Suction hole, 11. Drainage hole, 12. Through hole, 13. Drainage hole 2, 14. Slot, 15. Infusion set cap, 16. Metal guide wire, 17. Through hole 2. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the invention clearer, the technical solution in the embodiments of the invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the invention. Obviously, the described embodiments are part of the embodiments of the invention, not all of the embodiments. Generally, the components of the embodiments of the invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0049] In the description of the embodiments of the invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, it is only for the convenience of describing the invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0050] In the description of the embodiments of the invention, "a plurality of" means at least two.

[0051] In the description of the embodiments of the invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0052] As shown in the accompanying drawings, an intraluminal negative pressure flushing and drainage device includes a drainage outer sleeve 1, a built-in flushing tube 2 and a negative pressure suction tube 3, wherein the built-in flushing tube 2 and the negative pressure suction tube 3 are both arranged in the drainage outer sleeve 1.

[0053] Specifically, the drainage outer tube 1 is made of a hose. In this embodiment, the drainage outer tube 1 adopts the existing gastrointestinal decompression tube structure, can be easily bent, adapts to the natural curvature and physiological curvature of the human body lumen, avoids mechanical damage to the lumen, and reduces the risk of complications; and facilitates the adjustment of the position and direction of the drainage outer tube 1 in the body, which is convenient for medical staff to operate and position;

[0054] Specifically, the drainage outer sleeve 1 has a length of 120 cm and a diameter of 6 mm.

[0055] When in use, the drainage outer sleeve 1 is placed from the natural cavity (nasal cavity) to the fistula lesion with the assistance of an electronic gastroscope (or inserted through the nostrils) to serve as a basic channel for flushing and suction.

[0056] A drainage channel 4 is coaxially arranged inside the drainage overtube 1, and a tube head 5 is arranged at one end of the drainage overtube 1. The tube head 5 is a spherical structure. When the drainage overtube 1 enters the human body's lumen, it can effectively reduce the friction resistance with the inner wall of the lumen, so that the drainage overtube 1 can be inserted and advanced more smoothly, reducing the risk of stimulation and damage to the lumen and improving the patient's comfort.

[0057] The drainage outer sleeve 1 is fixedly provided with an elliptical column-shaped sponge member 6. The location where the sponge member 6 is provided on the drainage outer sleeve 1 is a working area for flushing and negative pressure suction. During the setting process, the sponge member 6 is provided near the fistula lesion.

[0058] The elliptical column-shaped sponge member 6 is fixed on the drainage outer sleeve 1 and ensures that the sponge member 6 passes smoothly when the drainage outer sleeve 1 moves in the lumen. The sponge member 6 entering the digestive tract lumen along with the drainage outer sleeve 1 can avoid the lumen collapse caused by continuous negative pressure suction in the digestive tract lumen during the use of the device. The space supported by the sponge member 6 is conducive to the flow of liquid in the cavity, and finally it is led out of the body along the negative pressure suction tube 3.

[0059] In this embodiment, the device is suitable for the treatment and prevention of digestive tract anastomotic leakage. The distance between the position of the sponge piece 6 set on the drainage outer sleeve 1 and the tube head is 30 cm. The length of the sponge piece is 15 cm, which can cover the target area to ensure the flushing and suction effects. After entering the digestive tract lumen, its diameter is 12mm-15mm, which can not only support the space conducive to liquid flow, but also avoid excessive expansion of the lumen, thereby avoiding its adverse effects on the healing process of the digestive tract lumen.

[0060] Specifically, the sponge member 6 is made of medical sponge, which is soft and can conform to the shape changes of the human digestive tract lumen. It has a smooth surface, excellent water permeability, and excellent shape recovery performance after compression. It can be compressed into a smaller volume during the insertion process to reduce stimulation and damage to the lumen. When reaching the target position, the sponge member 6 can return to its original shape, providing uniform support for the inner wall of the lumen, effectively preventing the collapse of the digestive tract lumen during the negative pressure suction process;

[0061] At the same time, due to the porous structure of the sponge member 6 itself, the gap between the inner walls of the lumen forms a liquid flow channel, which is beneficial to the circulation of the liquid and facilitates the flushing liquid to penetrate into the target area.

[0062] Similarly, during implementation, a porous support frame may be used to replace the sponge member 6, and the pore size and structure of the sponge member 6 may be improved to further enhance the clinical effects of treatment and prevention.

[0063] The sponge member 6 is provided with a plurality of through holes 12 along the circumference of its axis. The presence of the through holes 12 allows the sponge member 6 to have a plurality of compressible spaces inside. When the sponge member 6 encounters a narrow lumen, the lumen wall can be squeezed to compress the through holes 12, thereby further reducing the volume of the sponge member 6, avoiding obstruction or damage to the lumen, and reducing the risk of complications.

[0064] Furthermore, the through holes 12 are evenly distributed along the circumference of the axis, ensuring that the sponge member 6 is evenly stressed during the compression process, thereby avoiding local over-compression or uneven deformation.

[0065] During use, since the medical sponge material has good elasticity, after passing through a narrow lumen, the sponge piece 6 can quickly return to its original state and regain its original volume and shape; after returning to its original state, the porous structure and softness of the sponge piece 6 are not affected, and its flushing, suction and supporting functions can be guaranteed.

[0066] Furthermore, the side wall of the sponge member 6 is provided with a plurality of small holes 18 penetrating the side wall, so as to further improve the flushing and suction effect, and the sponge member 6 is embedded with a radiopaque marking line.

[0067] Moreover, the medical sponge has good compatibility with human tissue and will not cause tissue rejection or inflammatory response.

[0068] The side wall of the drainage outer sleeve 1 is provided with a flushing channel 7 extending to the sponge member 6, the built-in flushing tube 2 is embedded in the flushing channel 7 and the other end thereof passes through the side wall of the drainage outer sleeve 1 away from the tube head 5;

[0069] The built-in flushing tube 2 is embedded in the flushing channel 7, making the device structure more compact, reducing the overall volume and occupied space, and at the same time avoiding mutual interference between the built-in flushing tube 2 and the negative pressure suction tube 3, thereby improving the stability and reliability of the device;

[0070] An infusion set cap 15 is provided at one end of the internal flushing tube 2 away from the tube head 5, and the infusion set cap 15 is conveniently connected to an external flushing liquid source (such as an infusion set), and the operation is simple and quick.

[0071] In specific implementation, the flushing channel 7 extends to the sponge member 6, ensuring that the flushing liquid can be directly distributed to the sponge member 6, thereby continuously flushing the target area. In cooperation with the sponge member 6, the flushing liquid flows to the sponge member 6 through the built-in flushing tube 2, and the porous structure of the sponge member 6 can promote the flushing liquid to be evenly distributed to the inner wall of the lumen, thereby improving the comprehensiveness of the flushing.

[0072] Specifically, the internal flushing tube 2 is used to continuously flush the lumen near the fistula with physiological saline at a low flow rate.

[0073] The built-in flushing pipe 2 is provided with a flushing hole 8 at the sponge member 6. In the specific setting, the cross section of the built-in flushing pipe 2 is an ellipse. The built-in flushing pipe 2 with an ellipse cross section can promote the uniform flow of the fluid in the pipeline, avoid the occurrence of eddy currents or dead zones, and ensure the stable delivery of the flushing liquid. At the same time, the ellipse cross section can increase the aperture of the flushing hole 8 on the built-in flushing pipe 2, increase the contact area with the sponge member 6, so that the flushing liquid can flow more evenly to the sponge member 6, and improve the flushing efficiency.

[0074] The flushing holes 8 are evenly arranged along the axial direction of the drainage outer sleeve 1. In the specific arrangement, the flushing holes 8 are linearly arranged on the built-in flushing tube 2. The area where the flushing holes 8 are arranged on the built-in flushing tube 2 is adapted to the sponge member 6. During flushing, the flushing liquid in the built-in flushing tube 2 flows out through the flushing holes 8. Since the flushing holes 8 are linearly arranged corresponding to the sponge member 6, the flushing liquid can fully cover one side of the sponge member 6. At the same time, due to the porous structure of the sponge member 6 itself, the flushing liquid can infiltrate the entire sponge member 6, thereby ensuring that the flushing liquid fully covers the surface of the sponge member 6 and the inner wall of the lumen, avoiding flushing dead corners, and at the same time ensuring the uniform distribution of the flushing liquid flow, thereby improving the uniformity of flushing and achieving the effect of purifying the digestive tract lumen.

[0075] The outer wall of the drainage outer sleeve 1 is provided with a water outlet 9 that cooperates with the flushing hole 8 to ensure that the flushing liquid can flow smoothly from the flushing hole 8 to the sponge member 6.

[0076] The negative pressure suction tube 3 is inserted in the drainage channel 4 and one end of the negative pressure suction tube 3 close to the tube head 5 extends to the sponge member 6. The negative pressure suction tube 3 can move freely in the drainage channel 4, and the medical staff can flexibly adjust the insertion depth of the negative pressure suction tube 3 according to the patient's specific conditions and treatment needs; at the same time, the insertion of the negative pressure suction tube 3 makes the insertion and removal of the negative pressure suction tube 3 more convenient, and facilitates the replacement or cleaning of the negative pressure suction tube 3, reducing the difficulty and time of operation.

[0077] At the same time, the end of the negative pressure suction tube 3 close to the tube head 5 extends to the sponge piece 6, which can directly act on the area where negative pressure suction is required to improve the suction efficiency. The synergistic effect with the sponge piece 6 can effectively suck out flushing fluid, secretions, debris-like necrotic tissue, etc., further improving the drainage effect.

[0078] The negative pressure suction tube 3 is provided with scale lines, which can help medical staff to accurately judge the insertion depth of the negative pressure suction tube 3 in the drainage channel 4 and ensure that its end is located at the target position.

[0079] The end of the negative pressure suction tube 3 close to the tube head 5 is circumferentially provided with a plurality of suction holes 10, and the suction holes 10 are evenly distributed circumferentially, so as to realize all-round suction of the tube cavity, avoid suction dead angles, and improve suction efficiency

[0080] The drainage outer sleeve 1 is provided with a plurality of drainage holes 11 at the sponge member 6. In the specific arrangement, the drainage holes 11 are evenly and circumferentially arranged on the drainage outer sleeve 1 in multiple rows along the drainage outer sleeve 1. At the same time, since the flushing holes 8 are arranged in a single row linearly along the extension direction of the built-in flushing tube 2, that is, the water outlet holes 9 on the drainage outer sleeve 1 are arranged in a single row linearly along the extension direction of the drainage outer sleeve 1, at this time, the water outlet holes 9 are located between the drainage holes 11, which can avoid interference between the water outlet holes 9 and the flow holes 11.

[0081] In addition, since the suction hole 10 is arranged on the negative pressure suction tube 3, and the diameter of the negative pressure suction tube 3 is smaller than the diameter of the drainage outer sleeve 1 and is inserted into the drainage outer sleeve 1, at this time, interference between the suction hole 10 and the water outlet hole 9 and the drainage hole 11 can be avoided, thereby ensuring the normal operation of the suction hole 10, the water outlet hole 9 and the drainage hole 11.

[0082] The drainage hole 11 is located at the sponge 6, which can effectively collect the liquid around the sponge 6 and in the lumen, avoid the accumulation of liquid in the lumen, and reduce the risk of infection.

[0083] Through the synergistic effect of the suction hole 10 and the drainage hole 11, effective drainage and suction of the liquid in the lumen can be achieved;

[0084] In specific implementation, the end of the negative pressure suction tube 3 away from the tube head 5 is provided with an infusion cap 15, which can be connected to a negative pressure suction device (such as a negative pressure suction device, a suction pump, etc.), which is simple and quick to operate and ensures the normal use of the device.

[0085] While the built-in flushing tube 2 continuously flushes the lumen near the leak with saline at a low flow rate, the negative suction pressure generated by the negative pressure suction tube 3 is transmitted to the vicinity of the leak through the drainage hole 11 and the sponge member 6, forming a stable low negative pressure state slightly lower than the intra-abdominal pressure in the lumen near the leak, and continuously sucking the lumen fluid and flushing water near the leak into the negative pressure drainage device outside the body through water flushing and low negative pressure suction circulation.

[0086] Furthermore, the drainage outer sleeve 1 is provided with a plurality of drainage holes 13 at one end close to the tube head 5, which can effectively collect the liquid around the front end of the drainage outer sleeve 1 and in the lumen, expand the drainage range, and improve the drainage efficiency.

[0087] In a specific implementation, the drainage hole 2 13 and the drainage hole 11 at the sponge piece 6 form a synergistic effect, with the drainage hole 2 13 collecting the liquid around the front end of the drainage outer sleeve 1 and in the lumen, and the drainage hole 11 collecting the liquid around the sponge piece 6 and in the lumen, further improving the overall drainage efficiency of the device and ensuring that the liquid can be discharged from the body in a timely manner.

[0088] Furthermore, the evenly distributed drainage holes 13 can prevent the front end of the drainage outer sleeve 1 from causing excessive local pressure on the lumen wall, thereby reducing the risk of damage to the digestive tract wall and improving operational safety.

[0089] It also includes a metal guide wire 16, which is disposed in the drainage channel 4 and connected to the tube head 5. The metal guide wire 16 is connected to the tube head 5, and can effectively guide the drainage overtube 1 to enter the human body lumen along the correct path to avoid entering other tissues or organs by mistake. At the same time, the guidance of the metal guide wire 16 can improve the insertion accuracy of the drainage overtube 1, so that it can reach the target position more accurately;

[0090] As another embodiment, it is suitable for a pancreatic-intestinal anastomosis surgery scenario where the anastomosis has a blind end. The sponge member 6 is in contact with the tube head 5 of the drainage overtube 1. Specifically, the tube head 5 is plugged into the drainage overtube 1, and the side wall of the tube head 5 is a hollow space. A slot 14 is provided in the tube head 5, which is plugged into the negative pressure suction tube 3 and connected to the hollow space. A plurality of through holes 17 connected to the hollow space are provided on the outer wall of the tube head 5, so as to collect the liquid in the tube cavity at the tube head 5.

[0091] Specifically, the negative pressure suction tube 3 can be connected with the hollow space through the slot 14, ensuring that the negative pressure generated by the negative pressure suction tube 3 can effectively act on the liquid around the tube head 5 and in the tube cavity through the hollow space, thereby achieving a negative pressure suction effect; through the through hole 17, the tube head 5 can achieve all-round drainage of the liquid in the tube cavity around the tube head 5, avoiding drainage dead corners, and finally the liquid is sucked out of the body by the negative pressure suction tube 3.

[0092] In specific implementation,

[0093] 1. Equipment preparation

[0094] a) Check the equipment:

[0095] Confirm that all components including the drainage outer cannula 1, the internal flushing tube 2, the negative pressure suction tube 3 and the metal guide wire 16 are intact.

[0096] Check whether the sponge member 6 is intact to ensure that its porous structure and softness are not damaged.

[0097] Confirm that all connection parts (such as the connection between the built-in flushing tube 2 and the flushing channel 7, and the connection between the negative pressure suction tube 3 and the drainage channel 4) are firm and leak-free.

[0098] b) Disinfection:

[0099] After the device is packaged as a set, it is sterilized with ethylene oxide.

[0100] The drainage outer sleeve 1, the built-in flushing tube 2, the negative pressure suction tube 3 and the sponge 6 are strictly disinfected to ensure aseptic operation and avoid infection risks.

[0101] Use medical disinfectant to wipe the surface of the equipment to ensure thorough disinfection.

[0102] c) Connect the negative pressure suction device:

[0103] Connect the end of the negative pressure suction tube 3 away from the tube head 5 to a negative pressure suction device (such as a negative pressure suction device, a suction pump, etc.), ensuring that the connection is firm to avoid air leakage.

[0104] Confirm that the negative pressure value of the negative pressure suction device is set within a safe range, usually not exceeding 0.02MPa. The specific value can be adjusted according to the patient's condition and doctor's advice.

[0105] d) Prepare the flushing solution:

[0106] Prepare an appropriate amount of saline or other flushing solution prescribed by your doctor.

[0107] Connect the flushing liquid to the built-in flushing tube 2 through the infusion set cap 15 to ensure a firm connection to avoid leakage of the flushing liquid.

[0108] 2. Device insertion

[0109] a) Guided Insertion:

[0110] The metal guide wire 16 is inserted into the drainage channel 4 of the drainage outer sleeve 1 to ensure that the metal guide wire 16 is connected to the tube head 5 .

[0111] With the assistance of an electronic gastroscope and guided by a metal guide wire 16 , the drainage overtube 1 and the elliptical columnar sponge member 6 are slowly inserted from the nostrils into the distal esophagus of the human body or the vicinity of the leakage lesion below.

[0112] b) Adjust the position:

[0113] When the drainage outer tube 1 reaches the target position, the metal guide wire 16 is slowly withdrawn to ensure that the position of the drainage outer tube 1 is stable.

[0114] The position of the drainage outer sleeve 1 is adjusted so that the sponge member 6 is located near the fistula lesion to ensure the effectiveness of flushing and suction.

[0115] 3. Flushing and suction operations

[0116] a) Start flushing:

[0117] The infusion device cap 15 with the built-in flushing tube 2 is opened, the flushing liquid delivery system is started, and the lumen near the fistula is flushed with a continuous low-flow amount of saline.

[0118] The flushing liquid flows out through the flushing hole 8 of the built-in flushing tube 2, ensuring that the flushing liquid is evenly sprayed onto the sponge member 6 and evenly distributed to the inner wall of the lumen through the porous structure of the sponge member 6, thereby continuously flushing the lumen near the fistula opening at a low flow rate.

[0119] b) Start attraction:

[0120] At the same time, it is confirmed that the negative pressure suction device of the negative pressure suction tube 3 has been started and a stable negative pressure has been generated.

[0121] The negative pressure generated by the negative pressure suction tube 3 is transmitted to the vicinity of the fistula through the drainage hole 11 and the sponge member 6, and a stable negative pressure state slightly lower than the intra-abdominal pressure is formed in the tube cavity near the fistula.

[0122] Through the cycle of water flushing and low negative pressure suction, the luminal fluid and flushing water near the fistula are continuously sucked into the extracorporeal negative pressure drainage device.

[0123] c) Adjustment and monitoring:

[0124] Medical staff can flexibly adjust the insertion depth and negative pressure value of the negative pressure suction tube 3 according to the patient's specific conditions and treatment needs to ensure the best suction effect.

[0125] Regularly check the connection parts of the drainage outer cannula 1, the internal flushing tube 2 and the negative pressure suction tube 3 to ensure that there is no leakage.

[0126] Observe the patient's reactions and signs, and adjust operating parameters in a timely manner to ensure patient comfort and safety.

[0127] 4. End the operation

[0128] a) Stop flushing:

[0129] When the treatment is completed, the infusion device cap 15 with the built-in flushing tube 2 is closed to stop the delivery of the flushing liquid.

[0130] Confirm that the residual liquid in the built-in flushing tube 2 has been drained to avoid liquid leakage.

[0131] b) Stop attracting:

[0132] Turn off the negative pressure suction device and stop the suction operation.

[0133] Confirm that the residual liquid in the negative pressure suction tube 3 has been emptied to avoid liquid leakage.

[0134] c) Remove the device:

[0135] Slowly withdraw the drainage outer sleeve 1 from the human body lumen to ensure that the sponge 6 passes through the lumen smoothly to avoid damage.

[0136] Verify that all equipment has been safely removed and that it has been cleaned and disinfected in preparation for its next use.

[0137] The present invention is specifically implemented:

[0138] 1. For the treatment of gastrointestinal fistula: After the diagnosis of gastrointestinal fistula, with the assistance of electronic gastroscope, the device is placed from the natural cavity (nasal cavity) to the fistula lesion, and connected to low-flow irrigation of normal saline and active low-negative pressure suction.

[0139] 2. Preventive use of anastomosis: After the digestive tract anastomosis is completed, the device is introduced into the anastomosis through the nasal cavity during the operation, and connected to low-flow irrigation of normal saline and low-negative pressure continuous suction.

[0140] 3. Used for pancreatic-intestinal anastomotic fistula: After the pancreatic-intestinal anastomosis is completed, the negative pressure drainage device is introduced into the intestinal loop of the pancreatic-intestinal anastomosis through the nasal cavity for flushing and suction during the operation.

[0141] After the tracing examination showed that the fistula had healed (or there was no anastomotic leakage), the device was removed from the nasal cavity.

[0142] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. An intraluminal negative pressure flushing and drainage device, characterized in that: It comprises a drainage outer cannula (1), a built-in flushing tube (2) and a negative pressure suction tube (3); A drainage channel (4) is coaxially arranged inside the drainage outer sleeve (1), a tube head (5) is arranged at one end of the drainage outer sleeve (1), an elliptical columnar sponge member (6) is sleeved on the drainage outer sleeve (1), a flushing channel (7) extending to the sponge member (6) is arranged on the side wall of the drainage outer sleeve (1), the built-in flushing tube (2) is embedded in the flushing channel (7) and the other end thereof passes through the side wall of the drainage outer sleeve (1) away from the tube head (5), a flushing hole (8) is arranged on the built-in flushing tube (2) at the sponge member (6), and a water outlet (9) cooperating with the flushing hole (8) is arranged on the outer wall of the drainage outer sleeve (1); The negative pressure suction tube (3) is inserted into the drainage channel (4) and one end of the negative pressure suction tube (3) close to the tube head (5) extends to the sponge member (6). A plurality of suction holes (10) are circumferentially provided at one end of the negative pressure suction tube (3) close to the tube head (5). A plurality of drainage holes (11) are provided on the drainage outer sleeve (1) at the sponge member (6).

2. The intraluminal negative pressure flushing and drainage device according to claim 1, characterized in that: The sponge member (6) is provided with a plurality of through holes (12) along the circumferential direction of its axis, a plurality of small holes (18) penetrating the side wall of the sponge member (6) are provided, and a radiation-proof marking line is embedded in the sponge member (6).

3. The intraluminal negative pressure flushing and drainage device according to claim 1, characterized in that: The distance between the sponge piece (6) and the tube head is 30 cm.

4. The intraluminal negative pressure flushing and drainage device according to claim 3, characterized in that: The drainage outer sleeve (1) is provided with a plurality of drainage holes 2 (13) at one end close to the tube head (5).

5. The intraluminal negative pressure flushing and drainage device according to claim 1, characterized in that: The sponge piece (6) is in contact with the tube head (5) of the drainage outer tube (1).

6. The intraluminal negative pressure flushing and drainage device according to claim 5, characterized in that: The tube head (5) is plugged into the drainage outer sleeve (1); the side wall of the tube head (5) is a hollow space; a slot (14) is provided in the tube head (5) for plugging into the negative pressure suction tube (3) and communicating with the hollow space; and a plurality of through holes (17) are provided on the outer wall of the tube head (5) and communicating with the hollow space.

7. The intraluminal negative pressure flushing and drainage device according to claim 1, characterized in that: The drainage outer tube (1) and the negative pressure suction tube (3) are both provided with marking lines for marking the depth of entry into the body and marking lines for being radiopaque.

8. The intraluminal negative pressure flushing and drainage device according to claim 1, characterized in that: The sponge member (6) is a medical sponge.

9. The intraluminal negative pressure flushing and drainage device according to claim 1, characterized in that: An infusion device cap (15) is provided at one end of the built-in flushing tube (2) and the negative pressure suction tube (3) away from the tube head (5).

10. The intraluminal negative pressure flushing and drainage device according to claim 1, characterized in that: It also comprises a metal guide wire (16), wherein the metal guide wire (16) is arranged in the drainage channel (4) and connected to the tube head (5).

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