Cancer intestinal obstruction intervention device

Abstract

The cancerous intestinal obstruction intervention device comprises a main drainage tube, a water bag and a body surface fixing mechanism are arranged on the main drainage tube, the water bag is arranged at the end, intervened into a patient, of the main drainage tube, and the body surface fixing mechanism is used for being matched with the water bag to fix the main drainage tube; the water bag is communicated with a plurality of jet flow mechanisms used for dredging intestinal contents based on contraction pressure of the water bag, self-adaptive switching mechanisms are arranged in the jet flow mechanisms, and the self-adaptive switching mechanisms are used for opening and closing the jet flow mechanisms based on pressure changes in the main drainage tube and switching the jet flow direction based on the pressure direction until the jet flow direction points to the blocking position. According to the scheme, the probability that the catheter is blocked can be reduced, and the smoothness of enteric cavity decompression is improved.

Description

Technical Field

[0001] The present invention belongs to the field of medical auxiliary equipment, and in particular is a device for intervening intestinal obstruction caused by cancer. Background Art

[0002] Malignant bowel obstruction (MBO) is a common and serious complication in patients with advanced cancer. It primarily results from direct invasion, compression, or metastasis of abdominal or pelvic malignancies, such as colorectal cancer, ovarian cancer, and gastric cancer, leading to mechanical intestinal obstruction. Clinical manifestations include abdominal pain, vomiting, and constipation, leading to difficulty eating and impaired nutrient absorption, which can severely impact patients' quality of life and even be life-threatening.

[0003] Traditional treatments include surgery and conservative treatment, but surgery carries high risks and a long recovery time. In recent years, intestinal obstruction catheter technology has gradually become widely used, especially in conservative treatment. It is an effective non-invasive treatment method for intestinal decompression by inserting a catheter through the nose or anus. However, this method has many problems:

[0004] The catheter can easily be blocked by intestinal contents, resulting in poor drainage and affecting the treatment effect.

[0005] The need for frequent flushing and maintenance increases the workload of medical staff and the pain of patients, and may also cause certain irritation and damage to the patient's intestines.

[0006] Despite the emergence of new technologies such as percutaneous gastrostomy tube insertion guide devices, as described in patent publication number CN109528383B, the device includes an abdominal wall elevator, a puncture device, a dilator, a sheath, a gastric wall grasper, and a gastro-abdominal wall fixator, etc., and completes fistula creation through steps such as abdominal wall lifting, puncture and dilation, gastric wall grasping, and gastro-abdominal wall fixation, thereby solving the problem that upper gastrointestinal obstruction cannot be assisted by gastroscopy for gastrostomy tube placement. However, the device mainly focuses on the placement of gastrostomy tubes, and problems such as drainage and maintenance of cancerous intestinal obstruction have not been effectively solved.

[0007] In view of the defects of existing technologies, there is an urgent need for a new intervention device that can effectively solve the above problems to improve the treatment effect and quality of life of patients with cancerous intestinal obstruction. Summary of the Invention

[0008] In order to solve the above problems, the purpose of the present invention is to provide a cancerous intestinal obstruction intervention device that can reduce the probability of catheter blockage and improve the smoothness of intestinal cavity decompression.

[0009] In order to achieve the above object, the technical solution of the present invention is as follows:

[0010] A device for intervention of cancerous intestinal obstruction comprises a main drainage tube, which is provided with a water bag and a surface fixing mechanism. The water bag is provided at one end of the main drainage tube inserted into the patient's body, and the surface fixing mechanism is used to cooperate with the water bag to fix the main drainage tube; the water bag is connected to a plurality of jet mechanisms for clearing intestinal contents based on the contraction pressure of the water bag, and an adaptive switching mechanism is provided in the jet mechanism. The adaptive switching mechanism is used to open and close the jet mechanism based on the pressure change in the main drainage tube, and to switch the jet direction based on the pressure direction until the jet direction points to the blockage position.

[0011] Working principle:

[0012] Through percutaneous endoscopic gastrostomy, a main drainage tube is placed in the patient. Liquid is injected into the water balloon, causing it to expand until it contacts the stomach wall. The main drainage tube is then secured to the surface of the body using a surface fixation mechanism. During the drainage and decompression process, if intestinal contents become blocked within the main drainage tube, the pressure within the tube will change: At the proximal end of the blockage (between the insertion end of the main drainage tube and the blockage site), the gastrointestinal contraction and peristalsis generate a gradually increasing positive pressure, while at the distal end of the blockage (between the blockage site and the external end of the main drainage tube), an external negative pressure source generates a gradually increasing negative pressure. At this point, the water balloon begins to contract due to its own elasticity. The pressure generated by this contraction causes the liquid within the water balloon to be transported to the jet mechanism. An adaptive switching mechanism within the jet mechanism determines the direction of the blockage based on the pressure change within the main drainage tube and switches the jet direction, directing the jet directly toward the blockage site. The pressure generated by the balloon's contraction drives the liquid jet to impact the blockage, effectively unblocking the blockage.

[0013] The above scheme has the following beneficial effects:

[0014] 1. This solution uses the pressure generated by the contraction of the water bag to drive the liquid jet to clear the blockage. Compared with traditional drainage tubes, it can significantly reduce the probability of blockage caused by adhesion and accumulation of intestinal contents, ensure smooth intestinal decompression, and allow gas and liquid substances in the intestine to be discharged in time, thereby relieving patients' symptoms such as abdominal distension and vomiting and improving prognosis.

[0015] 2. This solution, because the device automatically senses blockages and initiates the unblocking process, eliminates the need for frequent manual flushing and maintenance by medical staff. This significantly reduces their daily workload, allowing them to focus on other critical aspects of patient care. For patients, this solution avoids the additional pain and intestinal irritation caused by frequent flushing procedures, and reduces the risk of complications such as intestinal infection and bleeding that may be caused by improper operation. This solution facilitates patients' physical and mental recovery, improves their treatment compliance and experience, and facilitates the smooth progress of the overall treatment process, accelerating their recovery.

[0016] 3. This solution uses an adaptive switching mechanism to locate the blockage location based on the pressure changes in the main drainage tube, so that the jet direction is directed toward the blockage point, thereby improving the dredging effect.

[0017] Furthermore, the surface fixing mechanism includes an adsorption plate; the center of the adsorption plate is penetrated by the main drainage tube, the adsorption plate and the main drainage tube are slidably matched, a conical tube is provided on the side of the adsorption plate away from the water bag, the conical tube and the main drainage tube are slidably matched, and a fixing cap is threadedly connected to the conical tube.

[0018] Beneficial Effects: The adsorption disc slides into the main drainage tube. After inserting the main drainage tube and adjusting the water bag's position, simply slide the adsorption disc into place on the body surface and rotate the fixing cap to secure it. Operation is simple and quick, saving time. The main drainage tube, adsorption disc, and conical tube can be adjusted in position to accommodate differences in body surface thickness and intestinal position, meeting diverse clinical needs and demonstrating high versatility.

[0019] Furthermore, a liquid outlet channel is connected between the water bag and the jet mechanism; the jet mechanism includes a groove, which is opened on one side of the liquid outlet channel, and the groove is connected to a chute, and the chute is respectively connected to the first jet channel and the second jet channel, and the first jet channel and the second jet channel are both connected to the main drainage tube, and the jet directions of the first jet channel and the second jet channel are opposite to each other, and the adaptive switching mechanism is slidably connected to the chute, and the adaptive switching mechanism realizes the connection between the first jet channel and the groove and the second jet channel and the groove based on different positions in the chute.

[0020] Beneficial effect: The contraction potential energy accumulated in the water bag is converted into kinetic energy of the fluid. The fluid enters each groove through the liquid outlet channel. When the groove is connected to the first jet channel or the second jet channel, the fluid will enter the main drainage tube in the form of micro-jets to impact the blockage position. The impact force is related to the elasticity of the water bag and the hydraulic pressure in the water bag.

[0021] Furthermore, the adaptive switching mechanism includes a piston; the piston is slidably engaged with the slide groove, and a first connecting channel and a second connecting channel are defined in the piston; an end of the slide groove away from the groove is connected to a sensing chamber, the sensing chamber is connected to the main drainage pipe, an elastic membrane is provided between the sensing chamber and the main drainage pipe, a connecting rod is provided on the elastic membrane, and the connecting rod is fixedly connected to the piston;

[0022] When the elastic membrane is recessed into the sensing cavity and the deformation amount is higher than a preset threshold, the piston moves until the first connecting channel is connected to the second jet channel;

[0023] When the elastic membrane protrudes from the sensing cavity and the deformation amount is higher than a preset threshold, the piston moves until the second connecting channel is connected to the first jet channel;

[0024] When the deformation of the elastic membrane is lower than a preset threshold, the first jet channel and the second jet channel are both blocked by the piston.

[0025] Beneficial effects: When the pressure in the main drainage tube changes, the deformation of the elastic membrane directly reflects the pressure state. If the elastic membrane is recessed into the sensing cavity, it indicates that the current position is positive pressure, and vice versa, it is negative pressure. The piston automatically switches the jet channel according to the degree of deformation of the elastic membrane. When the concave or convex deformation of the elastic membrane exceeds the preset threshold, the piston moves precisely to connect the corresponding jet channel with the groove. The fluid accurately impacts the blockage position in the form of micro-jets, quickly clearing the blockage, restoring the smoothness of the intestinal cavity decompression, effectively alleviating the patient's abdominal distension, vomiting and other symptoms, and improving the treatment effect and quality of life.

[0026] When the deformation of the elastic membrane is lower than the preset threshold, it indicates that there is no blockage in the main drainage tube. At this time, the piston automatically isolates the first jet channel and the second jet channel to avoid unnecessary loss of fluid, ensure the stability of the liquid pressure in the water bag, maintain the normal operation of the device, and extend the service life of the device.

[0027] Furthermore, the main drainage tube is also connected to a drainage joint and an injection joint, the drainage joint is connected to an external negative pressure source, the injection joint is connected to an injection mechanism, and the injection mechanism is connected to the water bag; the external negative pressure source is used for intermittent negative pressure extraction, and the injection mechanism is used to replenish liquid into the water bag; a first collection unit is provided in the drainage joint, and a second collection unit is provided in the injection joint, the first collection unit is used to collect a first pressure change in the water bag, and the second collection unit is used to collect a second pressure change in the main drainage tube; and it also includes a control unit, which is used to judge whether the impact force generated by the current hydraulic pressure in the water bag can clear the blockage based on the difference between the first pressure change and the second pressure change. If not, the control unit controls the operation of the injection mechanism to increase the liquid filling amount in the water bag until the impact force generated by the hydraulic pressure in the water bag can clear the blockage.

[0028] Beneficial Effects: The first and second data acquisition units monitor the pressure changes within the water bag and the main drainage tube, respectively. Based on the difference between the two, the control unit accurately determines whether the impact force generated by the water bag's hydraulic pressure is sufficient to clear the blockage. If insufficient, the injection mechanism automatically controls the water bag to replenish fluid, increasing the amount of fluid to increase the hydraulic impact force until the required clearing force is met. This ensures that the blockage is promptly and effectively impacted, restoring intestinal patency and guaranteeing the effectiveness of intestinal obstruction treatment.

[0029] The preset pressure threshold and fluid volume parameters can be individually adjusted based on the patient's specific condition, intestinal status, and degree of blockage. For patients with intestinal sensitivity or poor tolerance, the hydraulic impact force threshold can be appropriately lowered, allowing for a gentler unblocking approach. For those with stubborn blockages or severe intestinal dysfunction, the threshold can be raised to enhance the impact force, enabling precise and personalized treatment, improving treatment success rates and patient comfort.

[0030] Furthermore, the control unit is used to determine whether the liquid volume in the water bag is too low based on the first pressure change collected by the first collection unit. If the liquid volume is lower than the preset liquid volume, the liquid injection mechanism is controlled to add liquid to the water bag.

[0031] Beneficial Effects: Real-time monitoring of pressure changes within the water bag allows accurate determination of whether the fluid level is too low. When the fluid level is insufficient, the injection mechanism is promptly controlled to replenish the fluid, preventing the water bag from shrinking due to low fluid level. This prevents the water bag from detaching from the intestinal wall, causing displacement of the main drainage tube, or uneven pressure distribution on the intestinal wall, thereby ensuring stable fixation of the entire device.

[0032] Furthermore, it also includes an early warning unit, which is used to send an alarm signal to the outside; the control unit is used to judge whether the liquid volume in the water bag is too high based on the first pressure change collected by the first collection unit, and when the liquid volume exceeds the preset safety threshold, an alarm instruction is sent to the early warning unit and the filling is stopped.

[0033] Beneficial Effects: Real-time monitoring of pressure changes within the water bladder allows for accurate determination of whether the fluid level is excessive. When the fluid level exceeds a preset safety threshold, the control unit immediately sends an alarm to the early warning unit and stops filling, effectively preventing excessive expansion of the water bladder from causing compressive damage to the intestinal wall, safeguarding the patient's intestinal tissue and avoiding serious complications such as intestinal blood flow obstruction and ischemic necrosis caused by excessive fluid filling.

[0034] Furthermore, the water bladder is made of elastic silicone material, and its contraction potential energy is nonlinearly positively correlated with the amount of liquid filled.

[0035] Beneficial Effects: The bladder is made of elastic silicone, and its contraction potential is nonlinearly positively correlated with the fluid volume. By precisely controlling the fluid volume, the contraction force of the bladder can be finely adjusted to meet the needs of different blockage levels. This nonlinear relationship allows for significant changes in contraction potential energy with relatively small changes in fluid volume, facilitating quick and sensitive adjustment of the dredging force, improving the efficiency and effectiveness of blockage clearing.

[0036] Furthermore, the main drainage tube is provided with several water bags and several injection joints, the water bags correspond to the injection joints one by one, and the water bags are respectively connected to the liquid outlet channels. A one-way flow limiting mechanism is provided at the connection between the water bags and the liquid outlet channels for limiting the liquid from flowing back into the water bags.

[0037] Beneficial effects: Multiple water bags correspond to the injection connectors one by one. According to the patient's intestinal condition and obstruction location, the water bag can be flexibly selected, the effective working length of the main drainage tube can be adjusted, and the placement depth can be easily adjusted.

[0038] Multiple water bags are distributed along the main drainage tube. After the tube is placed, a specific water bag is filled with liquid according to the depth requirement, and the other water bags can remain deflated, so that the tube follows the direction of the intestine, reduces bends, and ensures smooth drainage.

[0039] The one-way flow limiting mechanism effectively prevents the backflow of liquid in the water bag, ensures that the water bag remains in an expanded state, stabilizes the compressive fixation on the intestinal wall, ensures the stable position of the device and prevents displacement.

[0040] Furthermore, an anti-backflow mechanism is provided in one end of the main drainage tube inserted into the patient's body; the anti-backflow mechanism includes several side grooves opened in the main drainage tube, and a one-way plate is rotatably connected in the side grooves. When the one-way plate is perpendicular to the side groove, the one-way plate blocks the main drainage tube.

[0041] Beneficial Effects: The one-way plate allows intestinal contents to drain smoothly out of the body while preventing them from flowing back into the intestines, ensuring a single drainage direction, avoiding the risk of repeated intestinal blockage and infection caused by backflow, and maintaining efficient drainage. When a blockage occurs in the main drainage tube, the positive pressure between the one-way plate and the blockage causes the one-way plate to deflect and block the main drainage tube. This mechanism can effectively prevent further reverse movement of the blockage. At the same time, the accumulated fluid between the one-way plate and the blockage continues to increase, generating a gradually increasing pressure. This, combined with the pressure generated by the contraction of the water bag, creates a stronger impact force, promoting the unblocking of intestinal contents at the blocked location.

[0042] Furthermore, spring plates are provided in the side grooves to prevent the one-way plate from overlapping with the side grooves.

[0043] Beneficial Effects: The spring clip effectively prevents the one-way plate from overlapping the side grooves, ensuring the plate's flexible rotation within the main drainage tube, maintaining its unidirectional flow, preventing backflow, and ensuring drainage effectiveness. The spring clip maintains a constant deflection angle, preventing excessive contact with the side grooves. This ensures that in the event of a blockage, the one-way plate can quickly block the main drainage tube, accumulating fluid to facilitate unblocking, improving response speed and efficiency.

[0044] Furthermore, the main drainage tube is made of super hydrophobic material.

[0045] Beneficial effects: Superhydrophobic materials make it difficult for liquids to adhere to the tube wall, which can effectively reduce the adhesion and accumulation of mucus and residues in intestinal contents on the inner wall of the main drainage tube, thereby reducing the risk of blockage caused by the adhesion of contents and ensuring the long-term patency of the drainage tube.

[0046] Furthermore, the early warning unit includes one or more of a sound alarm, a light alarm, and a wireless transmission alarm.

[0047] Benefits: Medical staff can select one or more alarm modes based on their specific needs and usage environment. In noisy environments, the audible alarm can be adjusted to an appropriate volume to ensure audibility; in low-light conditions, the light alarm provides a striking visual reminder; and for intensive care units or remote monitoring scenarios, the wireless transmission alarm allows medical staff to monitor the device status in real time, even when away from the patient, enabling flexible and efficient monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 Schematic diagram of the three-dimensional structure of the cancerous intestinal obstruction intervention device of the present invention.

[0049] Figure 2 for Figure 1 side view.

[0050] Figure 3 for Figure 2 Cross-sectional view along the AA direction.

[0051] Figure 4 for Figure 3 A partial enlarged schematic diagram of point M in the middle.

[0052] Figure 5 for Figure 4 A local enlarged schematic diagram of point N in the middle.

[0053] Figure 6 for Figure 3 A partial enlarged schematic diagram of point O in the middle.

[0054] The figure marks in the drawings of the specification include: 1. main drainage tube; 2. water bag; 3. adsorption plate; 4. drainage joint; 5. injection joint; 6. nutrition tube joint; 101. liquid inlet channel; 102. liquid outlet channel; 103. groove; 104. piston; 105. first connecting channel; 106. second connecting channel; 107. first jet channel; 108. second jet channel; 109. slide; 110. sensing chamber; 111. elastic membrane; 112. connecting rod; 113. side groove; 114. one-way plate; 115. shrapnel; 301. fixing cap; 302. conical cylinder; 401. first collection unit; 501. second collection unit. DETAILED DESCRIPTION

[0055] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0056] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention.

[0057] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal communication between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0058] The following is further described in detail through specific implementation methods:

[0059] Example 1 is basically as shown in the attached Figure 1 -Attached Figure 6 As shown: A cancerous intestinal obstruction intervention device mainly includes a main drainage tube 1, the two ends of the main drainage tube 1 are respectively an intervention end and an extracorporeal end, the intervention end is located in the patient's body, and the extracorporeal end is located outside the patient's body. In this embodiment, the main drainage tube 1 is made of a flexible super-hydrophobic material, and an anti-backflow mechanism is provided in one end thereof that intervenes in the patient's body, and the other end is connected to a drainage joint 4, an injection joint 5 and a nutrition tube joint 6. In this embodiment, the nutrition tube joint 6 is connected to a nutrition tube channel, and the nutrition tube channel and the main channel in the main drainage tube 1 (that is, the channel connected to the drainage joint 4) are independent of each other, that is, the main drainage tube is an integrated multi-cavity structure, and the nutrition tube channel is used to inject nutrient solution.

[0060] The drainage connector 4 is used to connect to an external negative pressure source (not shown) to achieve intermittent negative pressure extraction. In this embodiment, the external negative pressure source is an adjustable negative pressure pump, located outside the body and connected to the drainage connector 4 via a flexible hose. The negative pressure pump includes a negative pressure regulating valve and a pressure indicator. The negative pressure regulating valve is used to adjust the negative pressure, and the pressure indicator is used to display the current negative pressure value in real time. During use, medical personnel can adjust the negative pressure regulating valve to set the negative pressure to a level suitable for decompressing the patient's intestinal cavity. Under the action of negative pressure, intestinal contents in the main drainage tube 1 are drawn out of the body, thereby achieving intestinal decompression and drainage. The injection connector 5 is used to connect to the injection mechanism (not shown) to replenish liquid in the water bladder 2. In this embodiment, the injection mechanism includes an injection tube, an infusion pump, and a liquid source container. The liquid source container is used to store the liquid used to fill the water bladder 2, typically sterile water. The infusion pump is mounted on the injection tube, one end of which is connected to the injection connector 5 and the other end is connected to the liquid source container.

[0061] Preferably, in combination with Figure 3As shown, the drainage connector 4 is provided with a first collection unit 401. In this embodiment, the first collection unit 401 is a micro pressure sensor with its pressure-sensing surface exposed in the drainage connector 4. The first collection unit 401 is used to collect first pressure changes in the water bladder 2. The injection connector 5 is provided with a second collection unit 501. The second collection unit 501 is also a micro pressure sensor with its pressure-sensing surface located on the inner wall of the main drainage tube 1. The second collection unit 501 is used to collect second pressure changes in the main drainage tube 1.

[0062] Specifically, combined with Figure 3 and attached Figure 6 As shown, the backflow prevention mechanism includes a plurality of side grooves 113 formed in the main drainage tube 1. A one-way plate 114 is rotatably connected to each side groove 113. When the one-way plate 114 is perpendicular to the side groove 113, the one-way plate 114 blocks the main drainage tube 1. Preferably, a spring plate 115 is bonded and fixed to each side groove 113 to prevent the one-way plate 114 from overlapping the side groove 113.

[0063] For example, in this embodiment, there are 4 groups of side grooves 113, which are circumferentially distributed in the intervention end of the main drainage tube 1. The one-way plate 114 is a fan-shaped block with a central angle of 90°. The combination of the four one-way plates 114 just forms a circular blocking surface, and due to the inner wall limitation of the side groove 113, the one-way plate 114 can only deflect between 0-90°. The spring piece 115 is made of elastic metal and has a "V" structure. It will deform when it is compressed, and it can be restored after the compression disappears.

[0064] The main drainage tube 1 is also equipped with a water bladder 2 and a surface fixing mechanism. The water bladder 2 is located at the end of the main drainage tube 1 inserted into the patient's body. The surface fixing mechanism cooperates with the water bladder 2 to secure the main drainage tube 1. The water bladder 2 is connected to several jet mechanisms that are used to clear intestinal contents based on the contraction pressure of the water bladder 2. Preferably, the water bladder 2 is made of elastic silicone material, and its contraction potential energy is nonlinearly positively correlated with the liquid filling volume. This nonlinear relationship allows the water bladder 2 to produce a relatively significant change in contraction potential energy with relatively small changes in the liquid filling volume, thereby achieving precise clearing of the blockage.

[0065] Specifically, the surface fixing mechanism includes an adsorption disc 3, a conical tube 302 and a fixing cap 301. The center of the adsorption disc 3 is penetrated by the main drainage tube 1 and is slidably matched with the main drainage tube 1. The conical tube 302 is arranged on the side of the adsorption disc 3 away from the water bag 2, and is also slidably matched with the main drainage tube 1. The fixing cap 301 is threadedly connected thereto. In this embodiment, the structure of the conical tube 302 is similar to the expansion end of a self-expanding bolt. The outer side of the conical tube 302 is provided with an external thread, and the fixing cap 301 is provided with an internal thread. By tightening the fixing cap 301, the conical tube 302 is continuously tightened, thereby utilizing friction to tightly fit and fix to the outer side of the main drainage tube 1.

[0066] An adaptive switching mechanism is provided in the jet mechanism, which is used to open and close the jet mechanism based on the pressure change in the main drainage tube 1, and switch the jet direction based on the pressure direction until the jet direction points to the blockage position.

[0067] Specifically, combined with Figure 3 and attached Figure 4 As shown, a liquid inlet channel 101 is connected between the water bag 2 and the injection joint 5, and a liquid outlet channel 102 is connected between the water bag 2 and the jet mechanism; the jet mechanism includes a groove 103, which is combined with the attached Figure 4 and attached Figure 5 As shown, the groove 103 is opened at Figure 4 The bottom of the liquid outlet channel 102 and the bottom of the groove 103 are connected with a slide groove 109, and the first jet channel 107 and the second jet channel 108 are respectively connected in the slide groove 109. The first jet channel 107 and the second jet channel 108 are both connected to the main drainage tube 1. The jet directions of the first jet channel 107 and the second jet channel 108 are contrary to each other. Preferably, in this embodiment, the first jet channel 107 and the second jet channel 108 are arranged in an "eight" shape, and the adaptive switching mechanism is slidably connected to the slide groove 109. The adaptive switching mechanism realizes the connection between the first jet channel 107 and the groove 103 and the second jet channel 108 and the groove 103 based on different positions in the slide groove 109.

[0068] Specifically, the adaptive switching mechanism includes a piston 104; the piston 104 is slidably engaged with the slide groove 109, and a first connecting channel 105 and a second connecting channel 106 are opened in the piston 104; Figure 5 The bottom of the middle chute 109 is connected to a sensing chamber 110, which is connected to the main drainage tube 1. An elastic membrane 111 is bonded and fixed between the sensing chamber 110 and the main drainage tube 1. Figure 5 A connecting rod 112 is bonded and fixed to the top of the middle elastic membrane 111 , and the top of the connecting rod 112 is welded and fixed to the bottom of the piston 104 .

[0069] When the elastic membrane 111 is recessed into the sensing cavity 110 and the deformation is higher than a preset threshold, the piston 104 moves until the first connecting channel 105 is connected to the second jet channel 108; in this embodiment, the first connecting channel 105 and the second jet channel 108 are parallel to each other, and when the first connecting channel 105 and the second jet channel 108 coincide, the two are connected to each other.

[0070] When the elastic membrane 111 protrudes from the sensing cavity 110 and the deformation amount is higher than the preset threshold, the piston 104 moves until the second connecting channel 106 is connected to the first jet channel 107; in this embodiment, one of the outlets of the second connecting channel 106 is opened at Figure 5At the top of the piston 104, another outlet is parallel to the first jet channel 107. When the outlet is connected to the first jet channel 107, the second connecting channel 106 is connected to the first jet channel 107. The first connecting channel 105 and the second connecting channel 106 are independent of each other and do not interfere with each other.

[0071] When the deformation of the elastic membrane 111 is lower than a preset threshold, the first jet channel 107 and the second jet channel 108 are both blocked by the piston 104 .

[0072] Preferably, it also includes a control unit, which is used to judge whether the impact force generated by the current hydraulic pressure in the water bag 2 can clear the blockage based on the difference between the first pressure change and the second pressure change. If not, the control unit controls the operation of the injection mechanism to increase the liquid filling amount in the water bag 2 until the impact force generated by the hydraulic pressure in the water bag 2 can clear the blockage.

[0073] Specifically, the change in the first pressure per unit time can reflect the amount of energy released by the water bladder 2 during that time period. In this embodiment, the change in the first pressure is recorded as ΔP1. The larger ΔP1 is, the more energy the water bladder 2 releases. The change in the second pressure per unit time can indirectly reflect the degree of unblocking of the blockage. In this embodiment, the change in the second pressure is recorded as ΔP2. The larger ΔP2 is, the better the unblocking effect. Calculated using the formula ΔP = |ΔP1 - ΔP2|, ΔP can reflect the conversion efficiency of the energy released by the water bladder 2. A conversion coefficient K can be obtained through experiments. If ΔP > K, this indicates that the conversion efficiency of the energy released by the water bladder 2 is low and the energy stored in the water bladder 2 is insufficient to effectively clear the blockage. At this point, the control unit determines that the energy stored in the water bladder 2 needs to be increased and sends a command to the injection mechanism to start the injection pump to replenish liquid in the water bladder 2, thereby increasing the liquid volume and contraction potential energy of the water bladder 2. On the contrary, it indicates that the conversion efficiency of the energy released by the water bag 2 is high, and the energy stored in the current water bag 2 can meet the demand for clearing the blockage. The control unit does not need to intervene in the energy storage of the water bag 2, and the injection mechanism remains in standby state.

[0074] The control unit is also used to determine whether the liquid volume in the water bag 2 is too low based on the first pressure change collected by the first collection unit 401. If the liquid volume is lower than the preset liquid volume, the liquid injection mechanism is controlled to add liquid to the water bag 2.

[0075] Preferably, the system further includes an early warning unit configured to send an alarm signal. The early warning unit may include one or more of an audible alarm, a light alarm, and a wireless transmission alarm. The control unit may determine whether the liquid level in the water bladder 2 is too high based on the first pressure change detected by the first acquisition unit 401. When the liquid level exceeds a preset safety threshold, an alarm instruction is sent to the early warning unit, and filling is stopped.

[0076] The specific implementation process is as follows:

[0077] Through percutaneous endoscopic gastrostomy (PEG), the interventional end of the main drainage tube 1 is placed in the patient's intestinal obstruction site, and sterile water is injected into the injection connector 5 through an infusion pump. The sterile water enters the water bag 2 through the liquid inlet channel 101, causing the water bag 2 to gradually expand. The main drainage tube 1 is slightly pumped to adjust the water bag 2 so that the water bag 2 contacts the intestinal wall, and then the adsorption disk 3 and the conical cylinder 302 are slid to fit the adsorption disk 3 and the patient's skin surface, and then the fixing cap 301 is tightened to complete the fixation of the main drainage tube 1. The main drainage tube 1 has a certain degree of flexibility, is easy to place during clinical operation, and causes less pain to the patient. Then the external negative pressure source is started for intermittent low-pressure suction, so that the intestinal contents in the patient's body are discharged from the body under the patient's own intestinal peristaltic pressure and external low-pressure suction, so as to achieve decompression drainage.

[0078] During the decompression drainage process, if a blockage occurs in the main drainage tube 1, pressure changes will occur on both sides of the blockage position. Specifically, the main drainage tube 1 is represented by ABC, where A is the intervention end, B is the blockage position, and C is the external end. At this time, the AB section will present a positive pressure and gradually increase within a certain range, and the BC section will present a negative pressure and also gradually increase within a certain range. The elastic membrane 111 in the AB section area will gradually concave into the sensing cavity 110, as shown in the attached figure. Figure 5 As shown, the contraction potential energy of the water bladder 2 now forces the sterile water into each groove 103 through the liquid outlet channel 102. The water then enters the second jet channel 108 through the first connecting channel 105 in the form of microjets, impacting toward position B. Meanwhile, the elastic membrane 111 in the BC section gradually protrudes out of the sensing cavity 110. This elastic membrane 111 then pulls on the connecting rod 112, driving the piston 104 to move, connecting the second connecting channel 106 with the first jet channel 107. The microjets in this area also impact toward position B. By sensing the direction of pressure through the deformation of the elastic membrane 111 and switching the jet channel with the piston 104, blockage location and directional impact are achieved.

[0079] At the same time, the liquid in the AB section will gradually accumulate, and the positive pressure in the AB section and the accumulation of liquid will gradually push the one-way plate 114 to the adjacent Figure 6 The sterile water deflects to the left, thereby blocking the intervention end of the main drainage tube 1, thereby preventing the sterile water from impacting the blockage and flowing back into the intestine, causing reflux infection. In addition, as the sterile water continues to accumulate in the AB section, the positive pressure it generates will promote the unblocking process of the blockage, improving the unblocking efficiency.

[0080] As the liquid in the water bag 2 is continuously discharged, the control unit will collect the pressure changes (in this embodiment, pressure refers to pressure intensity) during the unblocking process in real time through the first collection unit 401 and the second collection unit 501, calculate the pressure changes ΔP1 and ΔP2 per unit time of the first collection unit 401 and the second collection unit 501, and the difference between the two ΔP=|ΔP1-ΔP2|. If ΔP>K, this indicates that the conversion efficiency of the energy released by the water bag 2 is low and the energy stored in the water bag 2 is insufficient to effectively unblock the blockage. The control unit starts the infusion pump to fill the water bag 2 with liquid through the injection connector 5.

[0081] At the same time, the control unit determines whether the liquid level in the water bladder 2 is too low or too high based on the first pressure changes detected by the first acquisition unit 401. A higher first pressure indicates a higher liquid level in the water bladder 2. If the liquid level is lower than a preset level, the control unit controls the injection mechanism to add liquid to the water bladder 2. If the liquid level exceeds a preset safety threshold, the control unit sends an alarm command to the early warning unit and stops filling the water bladder 2.

[0082] When the patient needs to be supplemented with energy, the nutrient solution can be replenished through the nutrient tube channel. Specifically, the nutrient solution enters the nutrient tube channel through the nutrient tube connector 6 and is then infused into a suitable location in the patient's intestine. Because the nutrient tube channel is independent of the main channel in the main drainage tube 1, it can ensure accurate delivery of the nutrient solution without being affected by drainage operations, ensuring the patient's nutritional supply during treatment, helping to maintain the patient's physical functions, and providing strong support for subsequent treatment and intestinal function recovery. It is particularly suitable for patients with insufficient nutritional intake due to intestinal obstruction, effectively alleviating their malnutrition and improving the overall treatment effect.

[0083] Example 2

[0084] The only difference from the above-mentioned embodiment 1 is that the main drainage tube 1 is provided with a plurality of water bladders 2 and a plurality of liquid injection connectors 5. The water bladders 2 correspond one-to-one with the liquid injection connectors 5, that is, each water bladder 2 is connected to the liquid injection channel through an independent liquid inlet channel 101. Each water bladder 2 is connected to a liquid outlet channel 102. A one-way flow restrictor (not shown) is provided at the connection between the water bladder 2 and the liquid outlet channel 102 to prevent liquid from flowing back into the water bladder 2. In this embodiment, the one-way flow restrictor is a Tesla valve channel, which utilizes the unique structure of the Tesla valve to limit flow. When the fluid flows in the forward direction, it can pass smoothly through the channel of the valve body with almost no resistance. However, when the fluid attempts to flow in the reverse direction, it encounters numerous obstacles, such as wing obstacles, grooves 103, and protrusions. The reverse flow is forced back and produces an impact blocking effect, thereby preventing reverse flow. In this embodiment, the forward flow is from the water bladder 2 to the liquid outlet channel 102.

[0085] Specific implementation process: After the doctor inserts the main drainage tube 1 into the patient's intestine, if the depth of the main drainage tube 1 needs to be adjusted, the doctor will first carefully observe the length of the intervention end of the main drainage tube 1 extending into the intestine through endoscope or B-ultrasound, so as to determine the water bag 2 that needs to be injected and its corresponding injection connector 5. Next, the doctor connects the injection mechanism (infusion pump) to the selected injection connector 5, and it is necessary to ensure that the connection is tight to prevent liquid leakage. Then, liquid is transported to the corresponding water bag 2 through the injection connector 5, so that the water bag 2 gradually expands. At this time, the one-way flow limiting mechanism (Tesla valve channel) plays a role, ensuring that the liquid can only flow from the water bag 2 to the liquid outlet channel 102, preventing the liquid from flowing back into the water bag 2, thereby ensuring that the water bag 2 can stably maintain the expanded state, and realizing accurate adjustment and fixation of the position of the main drainage tube 1. Repeat the process of the above embodiment 1.

[0086] The above is only an embodiment of the present invention, and common knowledge such as the specific structure and / or characteristics of the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A device for intervention of cancerous intestinal obstruction, comprising a main drainage tube (1), a water bag (2) and a body surface fixing mechanism provided on the main drainage tube (1), the water bag (2) being provided at one end of the main drainage tube (1) inserted into the patient's body, and the body surface fixing mechanism being used to cooperate with the water bag (2) to fix the main drainage tube (1); characterized in that: The water bag (2) is connected to a plurality of jet mechanisms for clearing intestinal contents based on the contraction pressure of the water bag (2). An adaptive switching mechanism is provided in the jet mechanism. The adaptive switching mechanism is used to open and close the jet mechanism based on the pressure change in the main drainage tube (1) and switch the jet direction based on the pressure direction until the jet direction points to the blockage position.

2. The cancerous intestinal obstruction intervention device according to claim 1, characterized in that: The body surface fixing mechanism comprises an adsorption disc (3); the center of the adsorption disc (3) is penetrated by the main drainage tube (1); the adsorption disc (3) and the main drainage tube (1) are slidably matched; a conical tube (302) is provided on the side of the adsorption disc (3) away from the water bag (2); the conical tube (302) and the main drainage tube (1) are slidably matched; a fixing cap (301) is threadedly connected to the conical tube (302).

3. The cancerous intestinal obstruction intervention device according to claim 2, characterized in that: A liquid outlet channel (102) is connected between the water bag (2) and the jet mechanism; the jet mechanism includes a groove (103), the groove (103) is opened on one side of the liquid outlet channel (102), the groove (103) is connected to a chute (109), the chute (109) is respectively connected to a first jet channel (107) and a second jet channel (108), the first jet channel (107) and the second jet channel (108) are both connected to the main drainage tube (1), the jet directions of the first jet channel (107) and the second jet channel (108) are opposite, the adaptive switching mechanism is slidably connected to the chute (109), and the adaptive switching mechanism realizes the communication between the first jet channel (107) and the groove (103) and the second jet channel (108) and the groove (103) based on different positions in the chute (109).

4. The cancerous intestinal obstruction intervention device according to claim 3, characterized in that: The adaptive switching mechanism includes a piston (104); the piston (104) and the slide groove (109) are slidably matched, and a first connecting channel (105) and a second connecting channel (106) are provided in the piston (104); the slide groove (109) is connected to a sensing chamber (110) on the side away from the groove (103), the sensing chamber (110) is connected to the main drainage pipe (1), an elastic membrane (111) is provided between the sensing chamber (110) and the main drainage pipe (1), a connecting rod (112) is provided on the elastic membrane (111), and the connecting rod (112) is fixedly connected to the piston (104); When the elastic membrane (111) is recessed into the sensing cavity (110) and the deformation amount is higher than a preset threshold, the piston (104) moves until the first connecting channel (105) is connected to the second jet channel (108); When the elastic membrane (111) protrudes from the sensing cavity (110) and the deformation amount is higher than a preset threshold, the piston (104) moves until the second connecting channel (106) is connected to the first jet channel (107); When the deformation amount of the elastic membrane (111) is lower than a preset threshold value, the first jet channel (107) and the second jet channel (108) are both blocked by the piston (104).

5. The cancerous intestinal obstruction intervention device according to claim 4, characterized in that: The main drainage tube (1) is also connected to a drainage joint (4) and a liquid injection joint (5), the drainage joint (4) is connected to an external negative pressure source, the liquid injection joint (5) is connected to a liquid injection mechanism, and the liquid injection mechanism is connected to the water bag (2); the external negative pressure source is used for intermittently pumping negative pressure, and the liquid injection mechanism is used for replenishing liquid into the water bag (2); a first collection unit (401) is provided in the drainage joint (4), and a second collection unit (501) is provided in the liquid injection joint (5), the first collection unit (401) is used to collect a first pressure change in the water bag (2), and the second collection unit (501) is used to collect a second pressure change in the main drainage tube (1); and a control unit is also included, the control unit being used to judge whether the impact force generated by the current hydraulic pressure in the water bag (2) can clear the blockage based on the difference between the first pressure change and the second pressure change, and if not, controlling the liquid injection mechanism to operate and increase the liquid filling amount in the water bag (2) until the impact force generated by the hydraulic pressure in the water bag (2) can clear the blockage.

6. The cancerous intestinal obstruction intervention device according to claim 5, characterized in that: The control unit is used to judge whether the liquid filling amount in the water bag (2) is too low based on the first pressure change situation collected by the first collection unit (401); if the liquid filling amount is lower than the preset liquid filling amount, the liquid injection mechanism is controlled to add liquid to the water bag (2).

7. The cancerous intestinal obstruction intervention device according to claim 6, characterized in that: The system further comprises an early warning unit for sending an alarm signal to the outside; and a control unit for judging whether the amount of liquid in the water bag (2) is too high based on the first pressure change collected by the first collection unit (401), and sending an alarm instruction to the early warning unit when the amount of liquid exceeds a preset safety threshold, and stopping the filling of liquid.

8. The cancerous intestinal obstruction intervention device according to claim 7, characterized in that: The water bag (2) is made of elastic silicone material, and its contraction potential energy is nonlinearly positively correlated with the amount of liquid filled.

9. The cancerous intestinal obstruction intervention device according to claim 8, characterized in that: A plurality of water bags (2) and a plurality of liquid injection joints (5) are provided on the main drainage tube (1), the water bags (2) and the liquid injection joints (5) corresponding to each other one by one, the water bags (2) are respectively connected to the liquid outlet channel (102), and a one-way flow limiting mechanism for limiting the backflow of liquid into the water bag (2) is provided at the connection point between the water bag (2) and the liquid outlet channel (102).

10. The cancerous intestinal obstruction intervention device according to claim 9, characterized in that: A backflow prevention mechanism is provided at one end of the main drainage tube (1) inserted into the patient's body; the backflow prevention mechanism comprises a plurality of side grooves (113) provided in the main drainage tube (1), and a one-way plate (114) is rotatably connected in each of the side grooves (113). When the one-way plate (114) is perpendicular to the side groove (113), the one-way plate (114) blocks the main drainage tube (1).

11. The cancerous intestinal obstruction intervention device according to claim 10, characterized in that: Spring pieces (115) are provided in the side grooves (113), and the spring pieces (115) are used to prevent the one-way plate (114) from overlapping with the side grooves (113).

12. The cancerous intestinal obstruction intervention device according to claim 11, characterized in that: The main drainage tube (1) is made of super-hydrophobic material.

13. The cancerous intestinal obstruction intervention device according to claim 12, characterized in that: The early warning unit includes one or more of a sound alarm, a light alarm and a wireless transmission alarm.

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