Device for rapid cleaning of digestive tract blood clots

Abstract

This application relates to the field of digestive endoscopy and discloses a rapid blood clot removal device for the digestive tract. The device includes a drainage tube, a metal spring, a cylinder, and a traction wire. The drainage tube has a blunt tip and a side hole in its side wall, with the tail end connected to a negative pressure suction device. The metal spring is located inside the drainage tube at its tip, with its distal end fixed to the tip. The cylinder is fixed to the tip of the drainage tube and located in the center of the metal spring. One end of the traction wire is connected to the proximal end of the metal spring, and the other end extends out of the drainage tube to the outside. By reciprocating the pulling and releasing of the traction wire, the metal spring is driven to extend and contract, using the metal wire to cut the blood clot sucked in through the side hole. Simultaneously, when the spring contracts, the cylinder pushes out the adhered blood clot. This device solves the technical problems of low efficiency, easy blockage, and potential rebleeding in traditional methods for blood clot removal, achieving efficient and safe blood clot removal.

Description

Technical Field

[0001] This application relates to the field of digestive endoscopy, and in particular to techniques for clearing blood clots in the emergency treatment of gastrointestinal bleeding. Background Technology

[0002] In the clinical diagnosis and treatment of digestive system diseases, gastrointestinal bleeding is one of the most common and dangerous emergencies. Gastrointestinal bleeding can be caused by a variety of factors, including peptic ulcers, ruptured esophageal and gastric varices, gastric cancer, and acute gastric mucosal lesions. These emergencies often have a sudden onset and can involve large amounts of bleeding. If the bleeding is not controlled promptly and effectively, and the accumulated blood and blood clots are not cleared, it can lead to hemorrhagic shock and even death. With the development of endoscopic technology, endoscopic hemostasis has become the preferred method for treating gastrointestinal bleeding. However, in actual emergency endoscopic procedures, physicians often face the following clinical dilemma: when there is a large amount of fresh blood or coagulated blood clots in the patient's gastric cavity, these blood and blood clots severely obstruct the endoscopic view, making it impossible for physicians to accurately determine the bleeding site and even more difficult to precisely perform hemostasis.

[0003] Specifically, in the endoscopic management of acute upper gastrointestinal bleeding, the patient's stomach often contains hundreds of milliliters or even more blood, including both fresh, liquid blood and coagulated clots. These clots can be several centimeters in size, viscous, and somewhat resilient. Before performing an endoscopy, the physician must first remove this blood and clots to obtain a clear field of view. Similarly, in the emergency management of ruptured esophageal and gastric varices, once the varices rupture, the bleeding is rapid and profuse. The blood quickly coagulates in the gastric fundus and cavity, forming large clots that not only affect endoscopic observation but may also obscure active bleeding points, delaying treatment. Furthermore, in the endoscopic treatment of gastric ulcer bleeding, the blood crusts on the ulcer surface and the surrounding blood clots need to be thoroughly removed to fully expose the ulcer base, allowing for effective hemostasis measures such as titanium clip closure, injection hemostasis, or thermal coagulation.

[0004] However, existing technologies face numerous limitations and technical challenges in handling these blood clots. Traditional endoscopic aspiration devices are prone to clogging when aspirating large blood clots, leading to aspiration failure and necessitating a halt to the procedure for cleaning, severely impacting the continuity and efficiency of treatment. Some physicians attempt to remove the blood clot through the endoscope tip by repeatedly advancing and retreating the endoscope, but this method is extremely inefficient, time-consuming with each advance and retreat, and increases patient discomfort. Furthermore, in cases with significant blood in the oropharynx, repeated advances and retreats pose a serious risk of aspiration and suffocation. Another approach involves spraying sodium bicarbonate solution or other liquids into the stomach cavity to chemically dissolve or flush the blood clot. However, this method may dissolve existing scabs, triggering rebleeding and worsening the condition. Additionally, while some existing blood clot removal devices improve drainage by enlarging the drainage orifice, they are prone to clogging due to clot adhesion during continuous use, making it difficult to maintain stable operation over extended periods and failing to meet the clinical demands for rapid and continuous clearance in emergency bleeding management.

[0005] In summary, the above analysis demonstrates that in endoscopic treatment of gastrointestinal bleeding, rapidly, efficiently, and continuously removing large amounts of blood clots from the gastric cavity while avoiding blockage, airway aspiration, and rebleeding is a critical technical challenge that urgently needs to be addressed clinically. Therefore, a new technical solution is urgently needed to address these issues and provide a safe and efficient method for clearing blood clots during endoscopic treatment of emergency gastrointestinal bleeding. Summary of the Invention

[0006] The purpose of this application is to provide a device for rapid clearance of blood clots in the digestive tract to solve the problems mentioned in the background art.

[0007] This application discloses a rapid blood clot removal device for the digestive tract, including a drainage tube, a metal spring, a cylinder, and a traction wire;

[0008] The head end of the drainage tube is blunt, and a side hole for aspirating blood clots is provided on the side wall of the head end of the drainage tube. The tail end of the drainage tube is used to connect to a negative pressure suction device.

[0009] The metal spring is disposed at the head end inside the drainage tube, and the distal end of the metal spring is fixed to the head end of the drainage tube.

[0010] The cylinder is located inside the metal spring and is fixed to the head end of the drainage tube, so that the metal spring can extend and retract relative to the cylinder.

[0011] One end of the traction line is connected to the proximal tail of the metal spring, and the other end passes through the wall of the drainage tube and extends to the outside of the drainage tube.

[0012] The traction line is used to be reciprocated to pull and release to drive the metal spring to extend and contract within the drainage tube; the metal spring is configured to cut the blood clot drawn in through the side hole using its metal wire; and the cylinder is configured to push the blood clot adhering within the metal spring outward when the metal spring contracts.

[0013] In a preferred embodiment, the side hole is located in the side wall region 4-10 cm away from the head end of the drainage tube.

[0014] In a preferred embodiment, the number of side holes is 8, and they are distributed as 4 on each side of the drainage tube; the diameter of the side holes is 3 mm.

[0015] In a preferred embodiment, the drainage tube is made of polyurethane.

[0016] In a preferred embodiment, the surface of the drainage tube is marked with graduations.

[0017] In a preferred embodiment, the unit of the scale is cm.

[0018] In a preferred embodiment, the length of the drainage tube is 100-120 cm.

[0019] In a preferred embodiment, the outer diameter of the drainage tube is 8-16 Fr and the inner diameter is 5-12 Fr.

[0020] In a preferred embodiment, the inner wall of the drainage tube is a smooth inner wall.

[0021] In a preferred embodiment, the traction wire is made of polyamide.

[0022] In a preferred embodiment, a traction ring is suspended at one end of the traction line extending outside the drainage tube.

[0023] In a preferred embodiment, the end of the drainage tube is provided with a negative pressure suction port, and a negative pressure suction plug is connected to the negative pressure suction port.

[0024] In a preferred embodiment, the cylinder is located at the axial center of the metal spring, and the outer diameter of the cylinder is smaller than the inner diameter of the metal spring.

[0025] This application achieves the following significant technical effects through the above technical solution:

[0026] Firstly, addressing the technical problem in existing technologies where the suction port is easily blocked by large blood clots during gastrointestinal bleeding treatment, this application addresses this issue by incorporating a metal spring inside the drainage tube tip, which, in conjunction with a traction line, drives its reciprocating extension and retraction. This mechanically cuts the blood clot as it is drawn into the side hole, breaking large clots into smaller fragments before suction, fundamentally reducing the risk of blockage due to excessively large blood clots. This pre-crushing mechanism allows the device to operate continuously without frequent interruptions for pipe clearing, significantly improving the continuity and efficiency of blood clot removal.

[0027] Secondly, the design of the cylinder fixed to the end of the drainage tube and located in the center of the metal spring, in conjunction with the contraction of the metal spring, enables the active ejection of blood clots adhering to the metal spring. In practical applications, viscous blood clot fragments easily become trapped in the helical gaps of the metal spring. If not removed in time, they will gradually accumulate and eventually cause the spring to lose its cutting ability or even cause complete blockage at the head of the device. This application uses the radial pushing action generated by the cylinder when the spring contracts to force these adhering substances out of the spring, effectively avoiding the problem of accumulation and blockage, and ensuring that the device maintains stable working performance throughout the cleaning process. This anti-clogging mechanism is a purely mechanical passive self-cleaning design, which does not require additional power input or a complex control system, and has the advantages of simple structure and high reliability.

[0028] Furthermore, the drainage tube is constructed of polyurethane with a smooth inner wall, a technique that works synergistically with the aforementioned metal spring cutting and cylindrical ejection mechanism. The flexibility of the polyurethane material ensures the drainage tube can pass smoothly through anatomical passages such as the esophagus during insertion without easily breaking, while also possessing sufficient resistance to negative pressure collapse. The smooth inner wall surface significantly reduces the frictional resistance and adhesion probability of broken blood clot fragments within the tube, allowing these fragments to move smoothly towards the end of the drainage tube under negative pressure and ultimately be expelled from the body, avoiding secondary blockage in the middle of the tube. This combination of material selection and surface treatment improves the overall drainage efficiency of the system, ensuring the efficient completion of the entire process from fragmentation to expulsion.

[0029] Furthermore, the side holes are located within a specific area on the side of the drainage tube tip, and the design of multiple side holes symmetrically distributed on both sides offers significant technical advantages compared to single-end hole suction. The multi-side hole design increases the effective suction area and improves the capture efficiency of blood clots; the symmetrical distribution ensures that regardless of how the drainage tube rotates within the body, some side holes always maintain good suction; and placing the side holes at a certain distance from the tip avoids the potential weakening of the tip's structural strength or impact on safety that might occur with direct openings at the blunt tip, while also placing the side holes within the effective working range of the metal spring, facilitating immediate cutting of the sucked-in blood clots. This comprehensive optimization of the position, number, and distribution of the side holes reflects the meticulous design of this application at the levels of fluid dynamics and structural mechanics.

[0030] Furthermore, the traction line is made of polyamide and features a traction ring suspended at one end extending to the outside of the drainage tube. This design not only ensures sufficient tensile strength to withstand repeated traction operations without easily breaking the line, but the traction ring also greatly facilitates manual operation, allowing for easy and accurate reciprocating traction. The operator can flexibly adjust the frequency and amplitude of traction based on the size and hardness of the blood clot, achieving real-time control of the cutting intensity. This flexibility and controllability are difficult to achieve with automated devices, making it particularly suitable for clinical scenarios requiring rapid response and personalized treatment, such as emergency bleeding.

[0031] The drainage tube features graduated markings in centimeters, providing precise depth indication for the operator. Whether under direct endoscopic visualization or blind insertion, the physician can determine the exact location of the tube tip within the digestive tract by observing the graduations, allowing for accurate placement of the device in areas with concentrated blood clots. This visualized depth control not only improves placement accuracy but also reduces time wasted on repeated adjustments, offering significant clinical value for time-sensitive emergency care.

[0032] The design concept of offering multiple specifications for the length and diameter of the drainage tube allows this device to adapt to the anatomical differences of patients of different ages and the varying drainage efficiency requirements in different clinical situations. For pediatric patients or patients with gastrointestinal strictures, a smaller outer diameter drainage tube can be selected to reduce the difficulty of placement and patient discomfort; for cases with large amounts of blood clots requiring rapid removal, a larger inner diameter drainage tube can be selected to increase the suction flow rate. This parameter adjustability gives this device a wide range of clinical applications, enhancing its practical value in various medical scenarios.

[0033] In summary, this application employs a purely physical method of blood clot removal combined with negative pressure drainage, completely avoiding the risk of rebleeding caused by the dissolution of blood clots due to chemical methods such as spraying sodium bicarbonate solution, thus significantly improving safety. Simultaneously, this device can be immediately placed and continuously operated when gastrointestinal bleeding occurs, eliminating the need for repeated insertion and withdrawal of the endoscope to remove blood clots as in traditional methods. This not only greatly improves cleaning efficiency but also avoids safety hazards such as airway obstruction caused by repeated insertion and withdrawal of the endoscope. While cleaning the blood clot, the endoscopist can simultaneously perform hemostasis, achieving integrated diagnosis, cleaning, and treatment, gaining valuable time and a clear field of vision for subsequent treatment. The synergistic effect of these technologies makes this application demonstrate significant clinical advantages in the endoscopic treatment of gastrointestinal bleeding, effectively improving patient prognosis.

[0034] The specification of this application contains numerous technical features distributed across various technical solutions. Listing all possible combinations of these technical features (i.e., technical solutions) would make the specification excessively lengthy. To avoid this problem, the various technical features disclosed in the above-described invention, the various technical features disclosed in the following embodiments and examples, and the various technical features disclosed in the accompanying drawings can be freely combined to form various new technical solutions (all of which are considered to have been described in this specification), unless such a combination of technical features is technically infeasible. For example, one example discloses feature A+B+C, and another example discloses feature A+B+D+E. Features C and D are equivalent technical means that serve the same function, and technically only one needs to be used; they cannot be used simultaneously. Feature E can technically be combined with feature C. Therefore, the solution A+B+C+D should not be considered as described because it is technically infeasible, while the solution A+B+C+E should be considered as described. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the rapid blood clot removal device for the digestive tract provided in the embodiments of this application;

[0036] Figure 2 This is a partial longitudinal sectional view of the drainage tube head end in an embodiment of this application, showing the positional relationship between the metal spring, the cylinder, and the side hole when the device is in a stationary state;

[0037] Figure 3 This is a schematic diagram of the working state according to the embodiments of this application. Figure 1 This shows the state of the traction line being pulled, the metal spring extending and cutting the blood clot;

[0038] Figure 4 This is a schematic diagram of the working state according to the embodiments of this application. Figure 2This shows the state of the traction line being released, the metal spring contracting, and the blood clot being pushed out by the cylinder.

[0039] Figure 5 This is a schematic diagram of the device being used in the human digestive tract according to the embodiments of this application.

[0040] In the figure, reference numeral 44 indicates a blood clot that is drawn into the drainage tube 25 through the side hole 26 and is being cut by the metal wire of the metal spring 27, and reference numeral 46 indicates blood clot fragments that are cut and broken and pushed outward by the cylinder 28 when the metal spring 27 contracts.

[0041] Explanation of reference numerals in the attached figures:

[0042] 24-Traction Line

[0043] 25-Drainage tube

[0044] 26-Side hole

[0045] 27-Metal Spring

[0046] 28-Cylinder

[0047] 29-Blood clots

[0048] 32-Pull ring

[0049] 33-Negative pressure suction port

[0050] 34-Negative pressure suction plug

[0051] 44 - Cut blood clot

[0052] 46 - Blood clot fragments that were ejected Detailed Implementation

[0053] In the following description, many technical details are presented to help the reader better understand this application. However, those skilled in the art will understand that the technical solutions claimed in this application can be implemented even without these technical details and various variations and modifications based on the following embodiments.

[0054] Explanation of some concepts:

[0055] Drainage tube: refers to the main pipe structure of the device in this application, which is used to establish a negative pressure drainage channel from the body to the outside. It contains components such as metal springs and cylinders, through which blood clots are drawn out of the body.

[0056] Metal spring: refers to a spiral elastic metal structure set inside the head of the drainage tube. Its distal end is fixed to the head of the drainage tube. Under the drive of the traction line, it can produce axial extension and contraction deformation, and use the spiral metal wire to cut the blood clot.

[0057] Cylindrical body: also known as support column, refers to a solid or hollow columnar structure fixed to the end of the drainage tube and located in the center of the internal space of the metal spring (material is the same as the drainage tube). Its main function is to exert a radial pushing effect on the blood clot fragments adhering to the spring when the metal spring contracts, so as to achieve a self-cleaning effect to prevent blockage.

[0058] Traction line: also known as nylon line, refers to the flexible traction component that connects to the proximal end of the metal spring and extends to the outside of the drainage tube. The operator drives the extension and retraction of the metal spring by reciprocating pulling and releasing the traction line.

[0059] Side holes: These are several holes opened on the side wall of the end of the drainage tube. They serve as the entrance for blood clots to enter the drainage tube. Under negative pressure, the blood clots are drawn into the tube through these side holes.

[0060] Negative pressure suction port: The interface structure at the end of the guide tube for connecting to an external negative pressure suction device.

[0061] Negative pressure suction plug: refers to an openable and closable plug or connector connected to the negative pressure suction port, used to control the sealing status of the negative pressure channel.

[0062] Pulling ring: refers to a ring-shaped operating structure suspended at one end of the traction line extending to the outside of the drainage tube, which is convenient for the operator to hook with their fingers to perform traction operations.

[0063] Tip: The end of the guide tube that extends into the patient's body, i.e., the end furthest from the operator, and is usually a blunt tip.

[0064] Tail end: The end of the guide tube located outside the body, close to the operator, is usually connected to a negative pressure suction device.

[0065] Distal end: When describing a metal spring, it refers to the end closest to the tip of the drainage tube (the end that extends into the body).

[0066] Proximal end: When describing a metal spring or traction line, it refers to the end closest to the tail end of the drainage tube (in the direction of external operation).

[0067] Extension: refers to the deformation state of a metal spring where the helical spacing and axial length increase under the pull of the traction line.

[0068] Contraction: refers to the deformation state of a metal spring after the traction line is released, in which the helical spacing decreases and the axial length shortens due to elastic restoring force or under the action of thrust.

[0069] Smooth inner wall: refers to the surface of the guide tube being treated to have a low surface roughness and a low coefficient of friction, in order to reduce the adhesion of blood clots and flow resistance in the tube.

[0070] The following is a brief summary of some of the innovative aspects of this application:

[0071] In summary, the technical solution adopted in this application achieves a three-dimensional mechanical synergy of "break-clear-prevention" in the treatment of blood clots in the digestive tract through a composite structural configuration at the head of the drainage tube. Specifically, the structural constraint of fixing the distal end of the metal spring to the head of the drainage tube, together with the controllable traction of the proximal tail of the metal spring by the traction wire, forms an asymmetrical mechanical driving relationship. This results in the deformation of the metal spring within the drainage tube not being a simple overall displacement, but rather a periodic morphological evolution of axial tension and rebound supported by a fixed point. During this morphological evolution, the spiral metal wire applies not a simple static compressive force to the blood clots drawn in through the side holes, but rather applies shear stress in the extension phase and, in the contraction phase, cooperates with the cylinder fixed at the head of the drainage tube and located in the center of the metal spring to generate a radial pushing effect, forming a temporally decoupled two-phase break-clearing mechanism.

[0072] Furthermore, the relative motion relationship between the static characteristic of the cylinder relative to the drainage tube and the telescopic motion characteristic of the metal spring relative to the cylinder allows the outer surface of the cylinder to shear and scrape away the blood clots adhering to the inner side of the metal spring during the contraction process, which involves the decrease in the inner diameter of the metal spring and its inclination towards the cylinder. Essentially, this utilizes the spatial repulsion principle derived from the relative displacement between the fixed and moving components, rather than relying on any additional power source or fluid flushing. This passive self-cleaning mechanism, nested with negative pressure suction and spiral cutting in the spatiotemporal dimension, constitutes a non-obvious combination of technical features that distinguishes this application from existing single suction or single cutting technologies.

[0073] More importantly, the synergistic effect between the smooth inner wall design of the drainage tube and the aforementioned mechanical crushing-ejection mechanism is not merely a simple superposition of material surface properties, but rather an optimized coupling with negative pressure drainage at the fluid dynamics level: after the crushed blood clot ejected by the cylinder is freed from the constraint of the metal spring, the low friction coefficient of the smooth inner wall significantly reduces the probability of secondary adhesion of fragments during subsequent transport, thereby ensuring that the negative pressure airflow can efficiently discharge these fragments along the axial direction of the drainage tube, avoiding the formation of new blockage points in the middle or tail section of the drainage tube. This optimized design of the entire process of "head-end crushing - middle-section anti-adhesion - tail-end drainage" reflects the multi-level and multi-dimensional technical approach adopted by this application in solving the technical problem of blockage risk during the clearing of blood clots in the digestive tract. The realization of this approach inevitably depends on the precise structural coordination and functional synergy between the aforementioned technical features, which cannot be easily obtained by those skilled in the art through simple combination or conventional improvement based on existing technologies.

[0074] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0075] Through long-term and in-depth research, the inventors of this application have discovered that the root cause of many problems in the existing technology for clearing blood clots in the digestive tract lies in the lack of systematic technical considerations and effective mechanical coordination mechanisms for the three key links of "breaking-transporting-preventing blockage" in the blood clot processing process.

[0076] Through clinical observation and in-depth analysis of numerous cases of emergency gastrointestinal bleeding, the inventors realized that the fundamental reason why traditional endoscopic suction devices are prone to clogging is that these devices rely solely on the suction force generated by negative pressure to remove blood clots, without pre-treating the clots before they enter the suction channel. Further analysis revealed that blood clots formed from acute bleeding are often large, reaching several centimeters in diameter, and possess a certain degree of toughness and viscosity due to the action of clotting factors. These large and viscous clots are highly likely to directly block the suction port or narrow sections of the suction tube when suctioned by negative pressure. Even with a larger diameter suction tube, the irregular shape and deformable nature of the blood clots can still cause them to become stuck or accumulate at certain points in the tube, creating an "embolism" effect that prevents the negative pressure from functioning effectively. This means that each suction can only work for a very short time before the operation must be stopped, the suction tube removed for cleaning, and then reinserted. This process is repeated, which not only consumes a lot of time, but also means that blood continues to accumulate with each interruption when the bleeding is not fully controlled, causing the cleaning work to fall into a vicious cycle of "cleaning-accumulation-cleaning".

[0077] Further analysis of the principles of existing technologies revealed that while some literature and products proposed incorporating cutting or crushing mechanisms into suction devices to mechanically break large blood clots into smaller pieces before suction, these solutions often face another serious technical bottleneck in practical applications: clogging of the cutting mechanism itself. Through long-term practical observation, the inventors realized that blood clots differ from ordinary solid substances; their viscous nature makes it easy for small fragments to adhere to the surface or gaps of the cutting mechanism (such as blades and spiral wires) after being cut and broken. As operation continues, these adhered substances accumulate, eventually causing the moving parts of the cutting mechanism to become clogged, losing normal movement and cutting function, leading to blockage or even complete failure of the device head. Existing technologies fail to effectively solve this problem because they only focus on generating cutting force, neglecting the inevitable adhesion phenomenon during cutting and its impact on the mechanism's continuous working ability. The lack of an effective self-cleaning mechanism makes such cutting devices theoretically feasible, but difficult to maintain stable operation for extended periods in actual clinical applications.

[0078] The inventors deeply understood that simply increasing negative pressure or cutting force could not fundamentally solve the problem; a true technological breakthrough required an organic combination of "active fragmentation" and "passive anti-clogging" at the mechanical structure level. Through repeated experiments and theoretical deduction, the inventors realized that if a relatively fixed support could be placed within the internal space of the cutting mechanism, the relative displacement between the cutting mechanism's periodic movement (extension-contraction) and this fixed support could exert a "squeezing-pushing" effect on the blood clot fragments adhering to the cutting mechanism in each movement cycle, thus achieving passive self-cleaning without relying on an external power source. The key to this technological insight lies in integrating the anti-clogging function into the movement process of the cutting mechanism itself, so that each cutting action is automatically accompanied by a cleaning action, forming an inherent, self-consistent anti-clogging mechanism.

[0079] More importantly, after in-depth consideration, the inventors creatively proposed that the location of this "fixed support" has a decisive impact on the anti-clogging effect. If the support is only located at the edge or one side of the cutting mechanism, its pushing effect will be localized and uneven, failing to effectively remove all adhering substances. Only when the support is located in the center of the cutting mechanism, forming a coaxial or near-coaxial arrangement with it, can a uniform, all-around radial pushing force be generated when the cutting mechanism contracts, fully pushing outwards the internally adhering blood clot fragments. Through in-depth analysis of mechanical principles, the inventors realized that this coaxial arrangement essentially utilizes the radial contraction effect that inevitably accompanies the axial contraction of the cutting mechanism (such as a helical spring). When the helical diameter decreases while the central fixed support remains unchanged, the spatial compression effect generated by the relative movement between the two forces the adhering substances that originally occupied the helical gap to have nowhere to hide and are thus discharged. This design embodies a clever "movement-based anti-clogging" technical concept.

[0080] The inventors also noted that even if blood clots are successfully broken up and ejected from the cutting mechanism at the head of the device, if the inner wall surface of the drainage tube is rough or has structural features with high resistance, these fragments may still re-adhere and accumulate in the middle or other parts of the tube during subsequent transport, forming new blockage points. The inventors' in-depth research into fluid mechanics and surface science led them to realize that the movement of blood clot fragments along the tube is essentially a solid-liquid two-phase flow process driven by negative pressure airflow. During this process, the coefficient of friction between the fragments and the tube wall, the roughness of the tube wall surface, and the presence of irregular structures such as protrusions and depressions inside the tube all significantly affect flow resistance and adhesion probability. Therefore, the inventors creatively proposed that the inner wall of the drainage tube must be designed to be smooth, and materials with appropriate surface properties (such as polyurethane) should be selected to minimize the transport resistance of fragments within the tube, thereby ensuring a smooth completion of the entire process from "breaking-ejection" to "complete expulsion from the body," avoiding new blockages at any intermediate stage.

[0081] Based on the above in-depth research, the inventors of this application propose an innovative technical solution: by setting a composite mechanical structure consisting of a metal spring, a central cylinder, and a traction wire inside the drainage tube tip, a fully coordinated mechanism of "negative pressure suction - spiral cutting - central ejection - smooth conveying" is achieved. The reciprocating extension and retraction motion of the metal spring driven by the traction wire generates a cutting action and, in conjunction with the fixed central cylinder, achieves a self-cleaning function. The smooth inner wall of the drainage tube ensures that the broken blood clots can be smoothly discharged, thus fundamentally solving a series of technical problems existing in the prior art, such as suction blockage, cutting mechanism failure, and low cleaning efficiency. The implementation process of this application is described in detail below through specific embodiments.

[0082] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be noted that the following description is merely exemplary and intended to provide further explanation of this application, and should not be construed as limiting the scope of protection of this application.

[0083] See Figures 1 to 5 This embodiment provides a rapid blood clot removal device for the digestive tract. This device is mainly used in the field of digestive endoscopy, and is particularly suitable for assisting in the removal of blood clots during emergency bleeding in digestive endoscopy. Through innovative structural design, this device achieves efficient cutting and drainage of blood clots, solving the technical problems of low blood clot removal efficiency, easy blockage, and potential rebleeding in existing technologies.

[0084] Specifically, the rapid blood clot removal device for the digestive tract in this embodiment comprises four main components: a drainage tube, a metal spring, a cylinder, and a traction wire. For example... Figure 1As shown, these components work together to form a complete blood clot removal system.

[0085] Structural features of drainage tube

[0086] The drainage tube, as the main structure of this device, is designed with full consideration of the actual needs of clinical use. Furthermore, the drainage tube is preferably made of polyurethane, a material with good biocompatibility and flexibility that allows it to pass smoothly through the esophagus and cardia while being resistant to breakage. This ensures smooth insertion of the tube into the human digestive tract while maintaining necessary structural strength. Polyurethane also possesses corrosion and wear resistance, enabling it to withstand prolonged immersion in digestive fluids and friction from blood clots.

[0087] The size design of the drainage tube reflects consideration of the needs of different patients. For example, the length of the drainage tube can be set in the range of 100-120cm. This length ensures that after the drainage tube is inserted through the nasal cavity, it passes through the esophageal inlet and the cardia into the stomach, with sufficient leeway for position adjustment and external fixation. For adult patients, this length range usually meets clinical needs; while for pediatric patients or patients with special body types, an appropriate length of drainage tube can be selected according to the actual situation.

[0088] The diameter of the drainage tube is also carefully designed. More specifically, the outer diameter of the drainage tube can be selected in the range of 8-16 Fr, and the inner diameter in the range of 5-12 Fr. Here, Fr is a French unit, and 1 Fr is approximately equal to 0.33 mm. The selection of the outer diameter requires balancing two considerations: on the one hand, the outer diameter cannot be too large to avoid excessive irritation or damage to the patient's nasal cavity and esophagus; on the other hand, the outer diameter cannot be too small, otherwise it will not be able to accommodate the internal metal spring and cylindrical structure. The design of the inner diameter is directly related to the blood clot suction efficiency. The larger the inner diameter, the higher the suction efficiency in theory, but the space requirements of the internal structure such as the metal spring also need to be considered. Through reasonable tube diameter design, this device can achieve efficient blood clot removal while ensuring patient comfort.

[0089] The drainage tube is designed with a blunt tip, which is an important safety feature. See also Figure 2 The blunt tip of the 25mm central drainage tube is designed to prevent damage to the digestive tract mucosa during insertion, especially when passing through relatively narrow areas such as the esophageal inlet and cardia. The rounded blunt tip allows for smooth passage without scratching or puncturing the mucosa. This design fully reflects the principle of prioritizing patient safety in medical devices.

[0090] Optionally, the drainage tube is marked with graduations in centimeters. These graduations are of significant clinical importance. During insertion, the physician can observe the graduations to determine the depth of insertion, thus precisely controlling the position of the tube tip within the digestive tract. For example, based on anatomical knowledge, the distance from the nasal cavity to the stomach can be roughly estimated, allowing the physician to determine whether the tube has entered the stomach or whether further advancement or retraction is necessary. This visual depth indication greatly improves the accuracy and safety of tube placement.

[0091] Furthermore, the drainage tube features a smooth inner wall. This feature is crucial for the successful removal of blood clots. The smooth inner wall significantly reduces the adhesion and retention of blood clots within the tube, allowing the cut blood clot fragments to be smoothly discharged under negative pressure. If the inner wall were rough, blood clot fragments would easily adhere to the tube wall, potentially accumulating and causing blockages, thus affecting the normal operation of the device. The smooth inner wall design works synergistically with the negative pressure drainage, ensuring the continuity and efficiency of the entire cleaning process.

[0092] The side hole design at the tip of the drainage tube is a key structural element for achieving blood clot aspiration. For example... Figure 2 As shown, multiple side holes 26 are located in the sidewall region near the blunt tip. Specifically, the side holes are located within a certain range on the side of the drainage tube tip; for example, this range can be a region 4-10 cm from the tip. This location was chosen carefully: placing them near the tip ensures that the side holes are located in the area where blood clots accumulate, thereby achieving effective suction; at the same time, the side holes are not directly opened at the very top, avoiding damage to the blunt tip structure and maintaining the safety of the catheter placement.

[0093] The number and distribution of the side holes are also optimized. In a preferred embodiment, there are eight side holes, four on each side of the drainage tube. This symmetrical distribution design has several advantages: First, multiple side holes increase the effective suction area and improve the aspiration efficiency of blood clots; second, the symmetrical distribution on both sides ensures that no matter how the drainage tube rotates in the digestive tract, there will always be a side hole that can contact the blood clot; third, the design of multiple side holes also provides a certain degree of redundancy, so that even if some side holes are temporarily blocked, the other side holes can still maintain their suction function. The diameter of the side holes can be set to an appropriate size, such as 3 mm (depending on the drainage tube model), which allows the blood clot to enter smoothly without excessively weakening the structural strength of the drainage tube.

[0094] The drainage tube is equipped with a negative pressure suction port at its tail end, to which a negative pressure suction plug is attached. This structure allows the drainage tube to be connected to an external negative pressure suction device. Through the negative pressure suction port, the drainage tube can be easily connected to a negative pressure suction system commonly used in medical institutions, or to a portable negative pressure drainage device. The design of the negative pressure suction plug ensures a tight seal, preventing air leakage and insufficient negative pressure. The negative pressure can be adjusted according to actual needs. During use, the operator can control the aspiration rate of blood clots by adjusting the intensity of the negative pressure, avoiding damage to the digestive tract mucosa caused by excessive negative pressure.

[0095] Structure and function of metal springs

[0096] The metal spring is the core functional component of this device, undertaking the crucial task of cutting blood clots. The metal spring is located at the head end inside the drainage tube, corresponding to the area where the side hole is located. The distal end of the metal spring is fixed to the head end of the drainage tube; this fixing method ensures that the spring has a stable support point during its extension and contraction.

[0097] Metal springs are made of elastic metal materials, typically medical-grade stainless steel or other metals with good elasticity and biocompatibility. The spring wire has a certain degree of hardness and toughness, allowing it to deform under external force and apply a cutting force to blood clots. It should be noted that the metal spring design employs a helical structure, which allows it to stretch and deform when pulled by the traction wire, and then elastically retract upon release. It is this periodic stretching-contraction motion, combined with the cutting action of the metal wire, that effectively breaks up the blood clot.

[0098] The metal spring is configured to cut blood clots drawn in through a side hole using its metal wire. For example... Figure 3 As shown, the blood clot 44 drawn in through the side hole 26 is located inside the extended metal spring 27 and is cut by its metal wire. The specific cutting mechanism is as follows: When the blood clot is drawn into the drainage tube through the side hole under negative pressure, the blood clot enters the space where the metal spring is located. At this time, by reciprocatingly pulling the traction wire, the metal spring undergoes repeated extension and contraction deformation. During this process, the metal wire of the spring applies a shearing force to the blood clot, just like the blade of scissors, cutting larger blood clots into smaller fragments. Due to the helical structure of the spring, the metal wire can act on the blood clot in different directions, thus achieving a comprehensive and efficient cutting effect.

[0099] The structure and synergistic effect of cylinders

[0100] The cylinder is another important innovative structure of this device. The cylinder is located within the internal space of the metal spring and is fixed to the head end of the drainage tube. More specifically, the cylinder is located at the center of the metal spring, and this central positioning is crucial for its function.

[0101] The way the cylinder is fixed allows the metal spring to extend and retract relative to it. In other words, the cylinder acts as a relatively static support structure, while the metal spring, under the influence of the traction wire, can extend and contract around the cylinder. This design creates a clever mechanical relationship.

[0102] The primary function of the cylinder is to prevent clogging. During the process of the metal spring cutting blood clots, some blood clot fragments may adhere to the metal wire of the spring. If these adhering substances are not removed in time, they will gradually accumulate and eventually cause the spring to malfunction, even clogging the entire device. This application cleverly solves this problem by incorporating a cylinder. Specifically, the cylinder is configured to push the blood clots adhering to the metal spring outward when the metal spring contracts. Figure 4 As shown, the blood clot fragments 46 that have been cut and broken are pushed outward by the cylinder 28 when the metal spring 27 contracts.

[0103] The working principle of this ejection mechanism is as follows: See [link / reference] Figure 4 When the metal spring is extended, there is a gap between the spring and the central cylinder. When the traction line is released and the metal spring retracts, the spring gradually moves closer to the cylinder. During this contraction process, the head of the cylinder exerts a pushing force on the blood clots adhering to the inside of the spring, pushing these adhering substances outward. This effectively removes adhering substances from inside the spring. The pushed-out blood clot fragments are then drawn out under negative pressure, preventing the problem of accumulation and blockage.

[0104] This synergistic design of the cylinder and metal spring demonstrates the unique attention to detail in this application. It not only solves the cutting function but also addresses the anti-clogging issue, enabling the entire device to operate continuously and stably, which is particularly important in emergency bleeding management.

[0105] Structure and operation of traction lines

[0106] The traction cable is the driving component that enables the extension and retraction of the metal spring. One end of the traction cable is connected to the proximal tail of the metal spring, and the other end passes through the wall of the drainage tube and extends to the outside of the drainage tube. This connection method ensures effective control of the metal spring.

[0107] The traction cable is preferably made of polyamide, a material known for its high strength, corrosion resistance, and flexibility. Polyamide traction cables can withstand repeated stretching without easily breaking, and their smooth surface minimizes friction when passing through the drainage tube wall, making them easy to handle. The diameter of the traction cable needs careful design to ensure sufficient strength to withstand the pulling force while being as thin as possible to reduce its impact on the drainage tube's inner diameter.

[0108] A traction ring is suspended at the end of the traction line extending outside the drainage tube. The traction ring greatly facilitates the procedure. In practice, an assistant or physician can hook their finger around the traction ring to easily perform repeated pulling and releasing movements. The traction ring avoids directly gripping the thin traction line, making the operation more convenient and preventing the traction line from slipping or becoming tangled during the procedure.

[0109] The traction line works as follows: it is reciprocated by being pulled and released to drive a metal spring to stretch and contract within the drainage tube. When the traction line is pulled outward, the metal spring is stretched, exhibiting an extended deformation; when the traction line is released, the metal spring retracts to its original state due to its elasticity. By repeatedly performing this pull-release action, the metal spring continuously cuts the blood clot, while the cylinder repeatedly pushes out the adhering material. The frequency and amplitude of this reciprocating motion can be flexibly controlled by the operator according to the actual situation. For example, for larger or harder blood clots, the amplitude and frequency of the pull can be increased to achieve a stronger cutting effect.

[0110] Overall collaborative working mechanism of the device

[0111] The components of the device in this application do not operate in isolation, but rather form a highly collaborative system. The entire workflow can be described as follows:

[0112] First, under direct endoscopic visualization, a drainage tube is inserted into the patient's body through the nasal cavity, such as... Figure 5 As shown, the drainage tube enters the stomach through the esophageal inlet and cardia. By observing the graduations on the surface of the drainage tube, the operator can accurately determine the insertion depth, ensuring that the tip (side hole) of the tube is placed in the area where blood clots are concentrated. The drainage tube is secured at the nasal rim to prevent displacement during subsequent procedures.

[0113] Subsequently, the negative pressure suction port at the end of the drainage tube is connected to an external negative pressure suction device via a negative pressure suction plug. Once the negative pressure system is activated, a negative pressure environment is created inside the drainage tube. Under this negative pressure, blood clots located near the tip of the drainage tube are drawn towards the side holes. Because the side holes are distributed on both sides of the drainage tube and are plentiful, they can efficiently capture surrounding blood clots. The blood clots then enter the interior of the drainage tube through the side holes, entering the space where the metal spring is located.

[0114] At this point, the assistant begins repeatedly pulling and releasing the traction ring. Each pull is transmitted through the traction wire to the metal spring, causing it to stretch; each release causes the spring to retract. During this periodic motion, the metal wire of the spring applies shearing force to the incoming blood clot, cutting it into smaller fragments. Simultaneously, with each spring contraction, the central cylinder pushes against the blood clot adhering to the inside of the spring, pushing these adhered substances outwards.

[0115] The blood clot, cut into fragments, moves along the smooth inner wall of the drainage tube towards its end under continuous negative pressure, eventually being drained into an external drainage bag. This process continues until the blood clot is completely removed. After the blood clot is cleared, the drainage tube can be removed, and further treatment procedures such as hemostasis can be performed.

[0116] At this point, the assistant begins to repeatedly pull and release the traction ring. Each pull is transmitted through the traction wire 24 to the metal spring 27, causing the spring to stretch; each release causes the spring to retract. During this periodic movement, the metal wire of the metal spring 27 applies a shearing force to the incoming blood clot, cutting it into smaller fragments. Figure 3 As shown, the blood clot (marked 44) ​​drawn in through side hole 26 is being cut by the wire of the extended metal spring 27. Simultaneously, with each spring contraction, the central cylinder 28 exerts a pushing force on the blood clot adhering to the inside of the spring, pushing these adhering substances outwards. Figure 4 As shown, the cut and broken blood clot fragments (labeled 46) are pushed out of the spring by the cylinder 28 during the spring's contraction.

[0117] The blood clot, cut into fragments, moves along the smooth inner wall of the drainage tube 25 towards the tail end under continuous negative pressure, and is eventually drained into the drainage bag outside the body.

[0118] This integrated collaborative mechanism fully demonstrates the mutual cooperation between the components: the side holes are responsible for suction, the metal springs for cutting, the cylinder for preventing blockage, and the smooth inner wall and negative pressure together for discharge. This interlocking design ensures the high efficiency and continuity of blood clot removal.

[0119] Flexibility and adaptability of usage methods

[0120] The device described in this application offers excellent flexibility during use. Operators can adjust parameters according to the patient's specific condition. For example, different sizes of drainage tubes can be selected based on factors such as the patient's age, gastrointestinal diameter, and blood clot size. For adult patients, a larger outer diameter and longer drainage tube can be chosen; for pediatric patients, a smaller outer diameter and shorter drainage tube should be selected.

[0121] Adjusting the negative pressure is equally important. During use, the aspiration rate of blood clots can be controlled by adjusting the intensity of the negative pressure. Appropriate negative pressure ensures effective suction without causing excessive stretching or damage to the digestive tract mucosa. If the blood clot is large and difficult to aspirate, the negative pressure can be increased appropriately; if the blood clot has been largely cleared, the negative pressure can be decreased to avoid aspirating normal digestive juices or mucosa.

[0122] The frequency and amplitude of the traction line operation can also be flexibly adjusted. For softer blood clots, a gentler traction action can be used; for harder or larger blood clots, the traction force and frequency can be increased to achieve a stronger cutting effect. This adjustability allows the device to adapt to different clinical situations.

[0123] The device proposed in this application has significant technical effects and innovative advantages compared with the prior art.

[0124] First, the problem of suction port blockage is solved. Traditional endoscopic suction is prone to blockage when handling blood clots, leading to suction failure. This application utilizes the cutting action of a metal spring to break large blood clots into smaller fragments before suction, significantly reducing the risk of blockage. Simultaneously, the cylindrical ejection mechanism further prevents adhesion and blockage within the spring, ensuring the device's continuous operational capability.

[0125] Furthermore, it improves clearance efficiency. Traditional methods involve repeatedly advancing and retreating the endoscope to remove blood clots, which is inefficient and easily obstructs the airway. The device of this application can remain in the body and work continuously. Through the synergistic effect of negative pressure drainage and cutting, it can quickly and effectively clear blood clots, greatly shortening the operation time and buying valuable time for subsequent hemostasis treatment.

[0126] Furthermore, the risk of rebleeding is avoided. Spraying sodium bicarbonate solution to treat blood clots can cause the scab to dissolve, leading to rebleeding. This application uses a purely physical method—cutting combined with suction—which does not involve chemical reagents, therefore avoiding the problem of scab dissolution and offering greater safety.

[0127] Furthermore, it is highly convenient to use. This device can be placed immediately in the event of gastrointestinal bleeding, allowing the endoscopist to perform hemostasis while clearing blood clots. If hemostasis is ineffective during the procedure, the device can continue to assist in clearing contents, maintaining a clear surgical field, and providing favorable conditions for further treatment.

[0128] Furthermore, the structural design is reasonable. Details such as the blunt tip of the drainage tube, the distribution of side holes, and the smooth inner wall all fully consider patient safety and comfort. The design of graduation markings and traction rings reflects a focus on ease of operation. The entire device embodies a human-centered design philosophy.

[0129] For example, in a typical clinical scenario, a patient presents to the emergency department with gastrointestinal bleeding. Endoscopic examination reveals a large number of blood clots in the stomach, obstructing observation and hemostasis. In this situation, the physician inserts the cleaning device described in this application through the nasal cavity and, under direct endoscopic visualization, advances the device's tip to the area of ​​concentrated blood clots in the stomach. After connecting to negative pressure, suction is initiated, and an assistant rhythmically pulls and releases the traction ring. Within minutes, a large number of blood clots are cut and suctioned into an external drainage bag, gradually clearing the surgical field. The physician can then clearly observe the bleeding site and promptly implement hemostasis. Throughout the process, the device operates smoothly without blockage, and the patient tolerates it well. This fully demonstrates the clinical application value of the device described in this application.

[0130] In summary, this application creatively achieves rapid and efficient clearance of blood clots in the digestive tract through the ingenious combination and synergistic action of a drainage tube, metal spring, cylinder, and traction wire. The device is structurally sound, easy to operate, safe, and effective, significantly improving the efficiency and success rate of emergency treatment for gastrointestinal bleeding, and has promising clinical application prospects.

[0131] Furthermore, it should be noted that in the preferred embodiment of this application, the metal spring is made of medical-grade stainless steel (such as SUS304 or SUS316L) and has the following parameter ranges: wire diameter of 0.3-0.8 mm, spring outer diameter of 4-10 mm, spring inner diameter of 2-8 mm, pitch of 1-3 mm, effective number of turns of 5-15, and spring natural length of 15-40 mm. Under the pulling action of the traction line, the metal spring can stretch to 1.5-2.5 times its natural length. The above parameters can be adjusted according to the inner diameter of the drainage tube and clinical needs. For example, for a drainage tube with an outer diameter of 12 Fr, a metal spring with an outer diameter of 6 mm, a wire diameter of 0.5 mm, and a pitch of 2 mm can be selected.

[0132] Further, optionally, the cylinder is preferably made of the same polyurethane material as the drainage tube, but medical-grade polyethylene or polypropylene can also be used. The cylinder has a diameter of 1-5 mm and a height of 5-20 mm. In one specific embodiment, the cylinder has a diameter of 3 mm and a height of 15 mm, maintaining a gap of 1-3 mm between the cylinder and the inner diameter of the metal spring, ensuring an effective ejection effect when the metal spring contracts. The head end of the cylinder can be designed as hemispherical or planar to optimize the pushing effect on blood clot fragments.

[0133] Further, optionally, the negative pressure range generated by the negative pressure suction device is -20 kPa to -60 kPa (i.e., -150 mmHg to -450 mmHg). In clinical use, it is recommended to set the initial negative pressure to -30 kPa to -40 kPa, which can be adjusted appropriately according to the amount and viscosity of the blood clot. When the blood clot is large and viscous, the negative pressure can be increased to -50 kPa to -60 kPa; when the blood clot is basically cleared, the negative pressure can be reduced to -20 kPa to -30 kPa to avoid excessive suction damage to the digestive tract mucosa.

[0134] Further, optionally, the traction line is made of polyamide (nylon) monofilament or braided thread, with a diameter of 0.3-1.0 mm and a tensile strength of not less than 50 N. The total length of the traction line should be 20-40 cm longer than the length of the drainage tube to facilitate external operation. In a preferred embodiment, the traction line has a diameter of 0.5 mm and adopts a braided structure to improve flexibility and fatigue resistance. The inner diameter of the traction ring is 15-25 mm to facilitate the operator's fingers to insert for traction operation.

[0135] Furthermore, it is worth noting that the self-cleaning mechanism of this device does not solely rely on the radial clearance variation between the metal spring 27 and the cylinder 28. In a preferred embodiment, the inner diameter of the metal spring 27 is slightly larger than the outer diameter of the cylinder 28. When the metal spring 27 is driven to extend and retract via the traction line 24, the spiral coil of the metal spring 27 performs axial reciprocating scraping relative to the stationary surface of the cylinder 28. This relative motion effectively removes blood clot fragments stuck in the spiral gap or adhering to the surface of the cylinder, and the support of the cylinder 28 prevents the spring from collapsing or twisting excessively. Thus, with the cooperation of the negative pressure airflow, it ensures that the broken blood clot fragments smoothly enter the rear section of the drainage tube 25. This synergistic effect of axial mechanical scraping and negative pressure airflow constitutes another layer of technical guarantee for the device's efficient anti-clogging function.

[0136] It should be noted that the above description is merely an exemplary embodiment of this application and is not intended to limit the scope of protection of this application. Those skilled in the art, inspired by the concept of this application, can make various modifications and improvements, all of which should fall within the scope of protection defined by the claims of this application.

[0137] It should be noted that in this patent application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. In this patent application, if it refers to performing an action according to an element, it means performing the action at least according to that element, including two cases: performing the action only according to that element, and performing the action according to that element and other elements. Expressions such as "multiple," "repeatedly," and "various" include two, two times, two kinds, and more than two, more than two times, and more than two kinds.

[0138] All documents mentioned in this application are considered to be incorporated in their entirety into the disclosure of this application so that they can serve as a basis for modifications if necessary. Furthermore, it should be understood that after reading the foregoing disclosure of this application, those skilled in the art can make various alterations or modifications to this application, and these equivalent forms also fall within the scope of protection claimed in this application.

Claims

1. A device for rapidly clearing blood clots in the digestive tract, characterized in that, Includes drainage tube, metal spring, cylinder, and traction wire; The head end of the drainage tube is blunt, and a side hole for aspirating blood clots is provided on the side wall of the head end of the drainage tube. The tail end of the drainage tube is used to connect to a negative pressure suction device. The metal spring is disposed at the head end inside the drainage tube, and the distal end of the metal spring is fixed to the head end of the drainage tube. The cylinder is located inside the metal spring and is fixed to the head end of the drainage tube, so that the metal spring can extend and retract relative to the cylinder. One end of the traction line is connected to the proximal tail of the metal spring, and the other end passes through the wall of the drainage tube and extends to the outside of the drainage tube. The traction line is used to be reciprocated to pull and release to drive the metal spring to extend and contract within the drainage tube; the metal spring is configured to cut the blood clot drawn in through the side hole using its metal wire; and the cylinder is configured to push the blood clot adhering within the metal spring outward when the metal spring contracts.

2. The rapid blood clot removal device for the digestive tract according to claim 1, characterized in that, The side hole is located in the side wall area 4-10cm away from the head end of the drainage tube.

3. The rapid blood clot removal device for the digestive tract according to claim 2, characterized in that, The number of side holes is 8, and 4 are arranged on each side of the drainage tube; the diameter of the side holes is 3mm.

4. The rapid blood clot removal device for the digestive tract according to claim 1, characterized in that, The drainage tube is made of polyurethane.

5. The rapid blood clot removal device for the digestive tract according to claim 1 or 4, characterized in that, The surface of the drainage tube is marked with graduations.

6. The rapid blood clot removal device for the digestive tract according to claim 5, characterized in that, The unit of the scale is cm.

7. The rapid blood clot removal device for the digestive tract according to claim 1, characterized in that, The length of the drainage tube is 100-120cm.

8. The rapid blood clot removal device for the digestive tract according to claim 1 or 7, characterized in that, The outer diameter of the drainage tube is 8-16 Fr, and the inner diameter is 5-12 Fr.

9. The rapid blood clot removal device for the digestive tract according to claim 1, characterized in that, The inner wall of the drainage tube is smooth.

10. The rapid blood clot removal device for the digestive tract according to claim 1, characterized in that, The traction line is made of polyamide.

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