Visual ileus catheter assembly

Abstract

The application provides a visual intestinal obstruction catheter assembly, which comprises a catheter, a visual optical cable and a limiting mechanism, wherein the catheter comprises a main tube, a guide part arranged at the front end of the main tube and a branch part arranged at the rear end of the main tube; one end of the visual optical cable is electrically connected with a camera, and the other end of the visual optical cable is connected with the limiting mechanism. The camera and the visual optical cable are matched to realize real-time observation of the inside of the intestinal tract, the limiting mechanism and a power mechanism are combined to realize accurate positioning and fast advancing and retreating operation, the visual guiding function is realized in real time, the catheter can be prevented from being coiled or deviated in positioning due to blind insertion operation, and the catheter placement accuracy and operation safety are improved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to a visual intestinal obstruction catheter assembly and its operating handle and other accessories. Background Technology

[0002] Intestinal obstruction is a common surgical emergency, characterized by high incidence, complex etiology, and diverse complications. Because intestinal obstruction prevents the normal passage of intestinal contents, timely decompression and drainage of the obstructed site are crucial to reduce pressure and prevent serious complications such as intestinal wall ischemia, necrosis, and perforation. Currently, most clinically used catheters for treating intestinal obstruction are blind-insertion procedures. In emergency settings, the lack of real-time image guidance equipment significantly complicates the placement of these catheters.

[0003] Traditional intestinal obstruction catheters typically require the use of guidewires. However, due to the considerable length of both the guidewire and the catheter (approximately 3 meters), several technical challenges arise during transnasal insertion and passage through the pylorus. First, accurate positioning of the catheter tip is difficult during blind operation, easily leading to the catheter becoming coiled within the stomach. Second, specific pushing techniques are required when passing the catheter through the pylorus, demanding a high level of skill from the operator. Furthermore, existing catheters lack visualization capabilities, making it impossible to observe the intestinal tract in real time, increasing operational risks and treatment uncertainty.

[0004] Furthermore, in existing technologies, the components of catheter assemblies often require on-site assembly, which can easily delay treatment in emergency situations. Therefore, there is an urgent need to develop an intestinal obstruction catheter assembly that integrates visualization, rapid operation, and precise positioning functions to solve the aforementioned key problems in clinical operations. Utility Model Content

[0005] The purpose of this application is to provide a visual intestinal obstruction catheter assembly and its operating handle, visual optical cable power mechanism and other components, which have a real-time visual guidance function, can avoid catheter coiling or positioning deviation caused by blind insertion, and improve the accuracy of catheter placement and operational safety.

[0006] A visual intestinal obstruction catheter assembly includes a catheter, which includes a main tube, a guide portion disposed at the front end of the main tube, and a branch portion disposed at the rear end of the main tube. It also includes a visual optical cable, one end of which is electrically connected to a camera, and the rear end of which is connected to a limiting mechanism.

[0007] Furthermore, it also includes an operating handle, on which the limiting mechanism is disposed, and a visual optical cable turning mechanism is installed inside the operating handle for controlling the turning operation of the visual optical cable.

[0008] Furthermore, it also includes a visible optical cable power mechanism, which enables the visible optical cable to quickly enter or exit the conduit.

[0009] Furthermore, the visible optical cable power mechanism can also cause the visible optical cable to vibrate.

[0010] Furthermore, the visible optical cable power mechanism is located inside the operating handle, and the operating handle is equipped with a switch button for the visible optical cable power mechanism.

[0011] Furthermore, it also includes a guide wire for tube placement, the guide wire being an integral structure with the visible optical cable.

[0012] Furthermore, the visible optical cable steering mechanism adopts a linkage structure between a micro gear set and a traction steel wire. The gear shaft of the micro gear set extends to the outside of the handle and connects to the knob. One end of the traction steel wire is fixed to the output end of the gear set, and the other end is connected to the optical cable to control the bending angle change of the front end of the optical cable.

[0013] Furthermore, the visible optical cable power mechanism is a mechanical spring threader, which allows the visible optical cable to be quickly withdrawn from the conduit.

[0014] Furthermore, the power mechanism of the visible optical cable includes a threading mechanism and a vibration mechanism. The threading mechanism is an electric threader or a pneumatic threader, which can enable the visible optical cable to quickly enter or exit the conduit. The vibration mechanism is a microwave generator, which can transmit the vibration through the visible optical cable to the conduit.

[0015] Furthermore, the outer diameter of the visible optical cable is smaller than the inner diameter of the main tube, and the visible optical cable structure is a composite cable body integrating optical fiber and electrical wire, and the visible optical cable is connected to the portable visualization device for signal connection.

[0016] As can be seen from the above, the visual intestinal obstruction catheter assembly provided in this application has the following advantages:

[0017] (1) A visual optical cable was added to the catheter assembly. The built-in visual optical cable is linked with the portable device, which enables the catheter position to be continuously tracked, greatly reducing the operation requirements and operation costs of clinical surgery for intestinal obstruction and improving the efficiency of clearing intestinal obstruction.

[0018] (2) This application also provides a limiting mechanism for the visual optical cable, which can effectively control the position of the camera connected to the visual optical cable and ensure its shooting accuracy;

[0019] (3) In addition, in order to facilitate operation, this application also adds a handle and combines the limiting mechanism with the handle, which improves the operator's operating comfort;

[0020] (4) The operating handle is also equipped with a threading mechanism that can quickly thread the tube and a vibration mechanism that can drive the catheter to vibrate, which greatly reduces the preoperative tube threading preparation time and improves the unblocking effect of the entire intestinal tube assembly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a catheter assembly according to one embodiment of this application.

[0022] Figure 2 A simplified structural diagram of the internal structure of the operating handle in one embodiment of this application.

[0023] Figure 3 A schematic diagram of the cross-sectional structure of a visible optical cable in one embodiment of this application.

[0024] Figure 4 A schematic diagram of the structure of a visible optical cable in another embodiment provided in this application.

[0025] In the diagram: 1. Conduit; 2. Optical fiber cable; 3. Camera; 4. Limiting mechanism; 5. Operating handle; 6. Optical fiber cable turning mechanism; 7. Optical fiber cable power mechanism; 8. Guide wire; 11. Main tube; 12. Guiding section; 13. Rear branch section; 71. Threading mechanism; 72. Vibration mechanism. Detailed Implementation

[0026] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In current technologies, catheter placement for intestinal obstruction treatment often requires blind insertion in the emergency room. Due to the lack of visual guidance equipment, operators must rely on guidewires to push the catheter over long distances. Traditional catheter assemblies can be up to 3 meters long, and after entering through the nose, they must pass through the pylorus of the stomach to reach the lower digestive tract. During the procedure, the catheter's path cannot be observed in real time, posing a risk of placement deviation and demanding extremely high operator skill. Emergency environments often lack X-ray or CT equipment, leading to low catheter placement efficiency and potentially delaying treatment.

[0028] To address the aforementioned issues, those skilled in the art have long faced the challenge of achieving visualized guidance of catheters in the absence of imaging equipment. Analysis revealed that the inability of traditional catheters to integrate real-time image acquisition is the primary cause of the risks associated with blind operation. After numerous experimental verifications, integrating a miniature camera device with the catheter structure became a feasible approach. However, ensuring stable signal transmission from the camera component within a long catheter without affecting its original functionality became the key to technological breakthroughs. Through structural innovation, a solution was ultimately developed that integrates the optical cable with the catheter body for collaborative operation.

[0029] Therefore, as an example, such as Figure 1 As shown, this application proposes a visual intestinal obstruction catheter assembly, including a catheter. The catheter includes a main tube 11, a guide portion 12 disposed at the front end of the main tube, and a rear branch portion 13 disposed at the rear end of the main tube. It also includes a visual optical cable 2, one end of which is electrically connected to a camera 3, and the rear end is connected to a limiting mechanism 4.

[0030] The main tube is a flexible tubular structure with a hollow channel, made of medical-grade silicone, used to construct the main structure of the catheter and house other functional components. The guide section is a tapered guiding component located at the tip of the catheter, which can be injection molded from medical-grade polymer material to reduce tissue resistance during catheter movement in the digestive tract. The rear branch section is the bifurcated structure at the end of the catheter, which can be implemented using a Y-type tee connector for connecting external drainage devices. Figure 3 As shown, the visible optical cable 2 is a composite cable integrating optical fiber 21 and electrical conductor 22. Specifically, it can be a composite structure formed by twisting multi-core optical fiber and miniature coaxial cable together and then sequentially wrapping it with an insulating layer 23, a transition layer 24, and a supporting hydrophilic layer 25, used for simultaneously transmitting optical image signals and power. The camera is a miniature endoscopic imaging device, specifically using a CMOS image sensor and an LED fill light module integrated and packaged, used for real-time acquisition of images inside the digestive tract. The limiting mechanism is a mechanical device with a position locking function, specifically implemented using a slider structure with elastic buckles, used to fix the extension length of the visible optical cable inside the duct.

[0031] Specifically, the main tube 11 serves as a supporting structure to carry the visible optical cable 2. Its inner diameter and the outer diameter of the optical cable form a clearance fit (the inner diameter of the main tube is typically about 2.8 mm, while the outer diameter of the visible optical cable is generally designed to be around 2 mm). The guide section 12 guides the catheter along the correct path within the digestive tract, avoiding damage to the mucosal tissue. The visible optical cable passes through the internal channel of the main tube, and the front-end camera extends to the inside of the guide section but does not protrude from the top of the guide section, capturing real-time images of the lumen ahead. The image signal is transmitted to an external display device via the optical cable, allowing the operator to adjust the direction of catheter advancement. The limiting mechanism controls the axial displacement of the optical cable within the catheter through mechanical constraints, preventing the camera from deviating from the target area due to cable movement. When the catheter needs to be turned, the optical cable can bend with the catheter to maintain signal transmission continuity. The branch section connects to a negative pressure suction device after catheter placement to decompress the obstruction site.

[0032] Compared to existing technologies, traditional catheters rely on guidewires for blind operation, making it impossible to observe the catheter tip position in real time, resulting in a high error rate. This solution integrates a visual optical cable and a camera, enabling the catheter to acquire images autonomously without relying on external imaging equipment. In existing technologies, the guidewire and catheter are separate structures; a preferred embodiment of this solution integrates the guidewire function into the optical cable, simplifying the component structure. Traditional catheter advancement requires repeated position confirmation; this solution significantly reduces operation time through real-time image feedback.

[0033] Through the above technical solutions, this application enables operators to directly observe the catheter's path in emergency settings and accurately determine the timing of pyloric passage. Image guidance reduces the risk of the catheter accidentally entering a branch lumen and minimizes the number of adjustments required. The integrated design of the fiber optic cable and catheter avoids the time-consuming docking of separate components, enabling rapid catheter placement. The limiting mechanism ensures that the camera is always in the optimal observation position, maintaining image clarity. This structure significantly improves the success rate of single-pass catheter placement while maintaining the original drainage function of the catheter.

[0034] As a preferred embodiment, such as Figure 2 As shown, this application also includes an operating handle, a limiting mechanism is disposed on the operating handle, and a visual optical cable turning mechanism is installed inside the operating handle for controlling the turning operation of the visual optical cable.

[0035] The operating handle is a gripping component for centralized control of the optical cable's movement. It can be manufactured using injection molding with a shell structure featuring anti-slip textures and integrated with mechanical transmission components. Its function is to provide the operator with a stable grip and to house the steering control components. The limiting mechanism is a fixing device that constrains the axial displacement of the optical cable. It can be a snap-fit ​​structure with elastic clamping pieces, preventing accidental slippage of the optical cable during steering operations and ensuring the positional stability of the camera at the cable's end. The visual optical cable steering mechanism is a drive component for adjusting the optical cable's direction of travel. It can be a structure linking a micro-gear set with a traction steel wire. Operating commands are input via a knob or push rod, converting manual operation into changes in the bending angle of the optical cable's end, enabling precise multi-directional adjustment.

[0036] Specifically, the operating handle has a transverse channel inside its housing, through which the visible optical cable enters from the rear and extends to the front branch. The elastic clamping plates of the limiting mechanism are symmetrically distributed on the inner wall of the channel, and the clamping force is controlled by adjusting bolts. A micro-gear set of the steering mechanism is installed in the middle of the handle, with the gear shaft extending to the outside of the handle and connecting to a knob. One end of the traction wire is fixed to the output end of the gear set, and the other end extends along the outer wall of the optical cable into the guide section. When the knob on the outside of the handle is rotated, the gear set causes the traction wire to shift, resulting in a controllable bend at the front end of the optical cable, with the bending angle controllable within, for example, 0-180 degrees. Thus, when the operator holds the handle with one hand, the thumb can operate the knob to steer the optical cable, and the index finger can trigger the clamping tightness adjustment of the limiting mechanism.

[0037] Compared to existing technologies, traditional catheter assemblies require two separate operations on the guidewire and catheter, and steering adjustment depends on the bending deformation of the guidewire, resulting in operational delays and angle deviations. This solution integrates limit and steering functions into a single operating handle, improving the optical cable steering response speed, and the bending angle can be precisely controlled through gear transmission ratios. For example, every 10-degree rotation of the knob corresponds to a 5-degree bend at the optical cable tip.

[0038] Through the above technical solution, this application enables operators in emergency environments to complete optical cable turning and positioning with one hand, reducing the risk of catheter placement failure due to lack of coordination between the two hands. At the same time, the mechanical transmission structure ensures the repeatability of each turning operation and shortens the average operation time required for the catheter to pass through the pylorus.

[0039] As another preferred embodiment, this application also includes a visible optical cable power mechanism that enables the visible optical cable to quickly enter or exit the conduit.

[0040] The visible optical cable power mechanism is a device that directly drives the optical cable to move through mechanical transmission or power output. Specifically, it can be implemented using an electric cable puller or a pneumatic cable puller, controlling the advancement or retraction of the optical cable within the conduit at a preset speed. The vibration mechanism is a component that generates periodic mechanical motion, specifically implemented using a microwave generator, reducing the frictional resistance between the optical cable and the inner wall of the conduit through vibration transmission.

[0041] Specifically, when the operator starts the power mechanism, the electric threader converts the rotational motion into linear motion through a gear set or pneumatic piston, pushing the visible optical cable to move directionally along the duct cavity. The optical cable can be inserted or retrieved at a constant speed under power drive, without relying on manual force.

[0042] Through the above technical solution, this application realizes the rapid assembly and positioning of optical cables and catheters in an emergency environment, avoiding the problem of excessive time consumption in manual operation. At the same time, the mechanical drive maintains uniform force application and improves assembly accuracy.

[0043] Furthermore, as a more preferred embodiment, this application further proposes that the visible optical cable power mechanism can also cause the visible optical cable to vibrate.

[0044] The visible optical cable power mechanism is a device that drives the visible optical cable to move and apply vibration. Specifically, it can be implemented using a combination of a threading mechanism and a vibration mechanism. The threading mechanism controls the forward and backward movement of the visible optical cable, while the vibration mechanism generates vibration waves mechanically or electromagnetically. The vibration mechanism is the component that transmits vibration to the visible optical cable. Specifically, it can be implemented using a microwave generator or a micro-motor in conjunction with an eccentric wheel structure. The vibration waves are transmitted through the visible optical cable to the front end of the catheter to loosen adhesions in intestinal tissue.

[0045] Specifically, during catheter insertion, a power mechanism drives the visible optical cable to move along the inside of the catheter, while a vibration mechanism activates and generates high-frequency vibrations. These vibration waves are transmitted through the optical cable to the catheter tip, causing a minute displacement of the tip under visual guidance. This displacement allows the catheter tip to overcome resistance formed by intestinal folds or obstructions, while the vibration waves reduce frictional resistance between the intestinal tissue and the catheter. Vibration feedback is transmitted to the operating end via the optical cable, providing the operator with tactile feedback to adjust the catheter's direction of movement or vibration intensity.

[0046] Compared to existing technologies, traditional intestinal obstruction catheters rely on passive guidewire movement and lack active unblocking methods, making the placement process susceptible to the complexity of the intestinal structure. This application, however, utilizes vibration wave superposition and visual guidance to create a dual approach of active unblocking and real-time positioning, directly targeting the obstructed area and reducing contact resistance between the catheter tip and intestinal tissue.

[0047] Through the above technical solution, this application solves the problems of high resistance and difficulty in rapid positioning during catheter placement due to the complex intestinal structure. Vibration waves can loosen adhesions between intestinal tissue and the catheter, reducing the risk of damage to the intestinal wall during the procedure, while also shortening the time required for the catheter to pass through the obstruction area. The combination of vibration feedback and visual guidance further improves the accuracy and safety of the catheter placement procedure.

[0048] This application further proposes that the power mechanism of the visible optical cable is located inside the operating handle, and the operating handle is provided with a switch button for the power mechanism.

[0049] The visible fiber optic cable power mechanism is a drive device that propels the visible fiber optic cable along the axial direction of the duct. It can be implemented using an electric motor or a pneumatic piston, transmitting power to the visible fiber optic cable via gear transmission or a linear actuator to control its movement in and out of the duct. The switch button is the physical control unit that triggers the start and stop of the power mechanism. It can be implemented using a push-button or slide switch, connected to the power mechanism via an electrical or pneumatic circuit. Its position is determined by the grip area of ​​the operating handle.

[0050] Specifically, the internal space of the operating handle is designed as a mounting cavity to accommodate the power mechanism, which is connected to the end of the visible optical cable via a transmission component. When the switch button is triggered, the power mechanism drives the visible optical cable to move along the inner cavity of the conduit, achieving rapid advance or retraction. During operation, the operator can control the entire optical cable by holding the handle with one hand and pressing the switch button, without the need for external equipment or additional operating steps.

[0051] Through the above technical solution, this application realizes the integrated design of optical cable power control and operating handle, which enables the optical cable to be moved forward and backward during clinical catheterization by one hand, significantly shortening the assembly and operation time of the catheter assembly, and is especially suitable for emergency scenarios with high requirements for ease of operation and efficiency.

[0052] Furthermore, as a more preferred embodiment, this application further proposes to include a guide wire for tube placement, wherein the guide wire and the visible optical cable are integrated into a single structure.

[0053] like Figure 4As shown, the guidewire is a flexible and supportive metal wire component, which can be made of nickel-titanium alloy or medical-grade stainless steel. Its function is to guide the catheter along the body's cavities. The visible optical cable is a composite structure integrating optical fiber and electrical signal transmission line. It can be implemented by coaxially encapsulating multi-core optical fiber and micro-cable. Its function is to transmit image signals captured by the camera. The integrated structure of the guidewire and visible optical cable is formed by coaxial nesting or encapsulation to form a single physical entity. For example, the guidewire is the core layer and the optical cable is the outer encapsulation layer, or the optical cable is embedded in the internal cavity of the guidewire. This design enables the guidewire to have both mechanical guidance and optical monitoring functions.

[0054] Specifically, during transnasal catheter placement, the integrated structure of the guidewire and fiber optic cable eliminates the need for physical connection before placement. As the catheter is advanced along the body cavity, the guidewire provides rigid guidance, while the fiber optic cable transmits real-time images of the cavity captured by a camera. Because the physical positions of the guidewire and fiber optic cable are fixed, they do not experience relative displacement during advancement, thus avoiding image deviations caused by misalignment of the guidewire and fiber optic cable in traditional separate structures. In emergency room settings, the operator can directly complete the placement using the integrated component, without the need for additional guidewire and fiber optic cable assembly steps.

[0055] Through the above technical solution, this application solves the problem of low assembly efficiency caused by the separation of guidewire and optical cable. In emergency catheterization, path guidance and image monitoring can be completed simultaneously with a single insertion, reducing the operational risks caused by component misalignment and improving the positioning accuracy of catheters in complex cavity environments.

[0056] Furthermore, as a more preferred embodiment, this application further proposes a specific structure for the visual optical cable steering mechanism as a combination structure of a gear set and a steering cable. The gear set includes a driving gear and a driven gear, and the steering cable includes a first cable and a second cable. The driving gear is coaxially connected to the operating knob, and the driven gear is fixedly connected to the end of the steering cable. The first cable and the second cable extend axially along the main tube to the inside of the guide section and form a reverse traction structure with the end of the guide section.

[0057] The gear set is a transmission component consisting of a driving gear and a driven gear, specifically helical gears or bevel gears. The rotational motion of the driving gear is converted into the rotational motion of the driven gear through gear meshing. The steering cable is a flexible transmission component with tensile strength, specifically made of nickel-titanium alloy wire or steel wire coated with polymer material. The end of the cable is fixedly connected to the inside of the guide section to form a bending control point. The reverse traction structure consists of two cables symmetrically distributed at the end of the guide section. Specifically, the ends of the cables can be fixed to the side walls of the guide section respectively. When one cable is pulled, the other cable relaxes simultaneously, creating a bending moment.

[0058] Specifically, rotating the operating knob drives the drive gear to rotate, which in turn drives the driven gear to rotate. The rotational motion of the driven gear is converted into axial displacement of the steering cable. When the operating knob rotates clockwise, the first cable is pulled and causes the guide to bend in the first direction, while the second cable simultaneously releases its slack length. When the operating knob rotates counterclockwise, the second cable is pulled and causes the guide to bend in the opposite direction, while the first cable simultaneously releases its slack length. The bending angle of the guide is linearly related to the rotation angle of the operating knob through the gear ratio, and the bending direction is controlled by the rotation direction of the operating knob.

[0059] Through the above technical solution, this application enables the bending angle of the catheter tip to form a precise correspondence with the operating knob in the absence of imaging equipment in the emergency room. After the operator observes the position of the pylorus through real-time images from the camera, he can directly and quantitatively rotate the operating knob to bend the guide part to the target angle, quickly guiding the catheter through the pylorus and avoiding prolonged catheterization time caused by repeated trial and error.

[0060] Furthermore, as a more preferred embodiment, this application further proposes that the power mechanism for the visible optical cable employs a mechanical spring threader to enable the visible optical cable to quickly exit the conduit.

[0061] The mechanical spring cable threader is a device that stores elastic potential energy through a pre-compressed spring, specifically a helical spring or leaf spring structure. When the spring is released, the elastic potential energy is converted into kinetic energy, driving the optical cable to move axially along the conduit. This device provides driving force through mechanical energy storage, without relying on an external power source or pneumatic system. The rapid withdrawal function allows the optical cable to completely detach from the conduit in a linear motion within a short time after triggering. This is achieved through the elastic deformation of the spring, resulting in instantaneous acceleration. The spring release stroke matches the optical cable withdrawal length, ensuring the optical cable completes the withdrawal action in one go.

[0062] Specifically, the mechanical spring cable threader contains a pre-compressed spring. One end of the spring is fixed to the operating handle housing, and the other end is connected to the end of the visible optical cable. When the operator presses the release button, the spring constraint device is unlocked, and the spring instantly returns to its original deformation, pushing the optical cable backward along the inner wall of the conduit. Because the spring driving force acts directly on the optical cable, the jamming problem caused by friction during traditional manual cable removal is avoided. This process, in the absence of visual equipment in the emergency room, achieves the optical cable removal action through a purely mechanical structure, reducing the operation time to the second level.

[0063] Through the above technical solution, this application solves the problem of low efficiency in optical cable removal caused by the lack of visualization equipment in emergency environments. It achieves rapid and reliable removal of optical cables through mechanical energy storage drive, reduces the risk of patient infection caused by operation delays, and avoids the power supply limitation problem of electric drive devices in emergency scenarios.

[0064] This application further proposes a power mechanism for the visible optical cable, including a threading mechanism and a vibration mechanism. The threading mechanism is an electric threader or a pneumatic threader, which enables the visible optical cable to quickly enter or exit the conduit. The vibration mechanism is a microwave generator, which can transmit vibration to the conduit through the visible optical cable.

[0065] The threading mechanism is a device that drives the optical cable to move along the axial direction of the catheter via mechanical power. Specifically, it can be implemented using an electric motor-driven roller assembly or a pneumatic piston structure. Its function is to replace manual operation with automated propulsion, solving the problem of low efficiency caused by unstable operation speed in traditional catheter placement. The vibration mechanism is a device capable of generating high-frequency mechanical vibrations. Specifically, it can be implemented using piezoelectric ceramic elements or an electromagnetic oscillator combined with a microwave signal generator. Its function is to transmit vibrational energy to the front end of the catheter via the optical cable, causing the catheter to form intermittent contact with surrounding tissues when passing through narrow areas of the digestive tract, thereby reducing frictional resistance.

[0066] Specifically, the threading mechanism uses an electric or pneumatic power source to drive the optical cable in a controlled linear motion inside the catheter, enabling the catheter to quickly reach the target position. Microwaves generated by the vibration mechanism are conducted through the optical cable to the catheter tip, creating micro-amplitude vibrations in the frequency range of 10-100Hz. This vibration disrupts the static friction between the catheter and the intestinal wall, converting it into dynamic friction, thereby reducing propulsion resistance. When the threading and vibration mechanisms work synchronously, the catheter vibrates at its tip while being propelled by the power, which is particularly suitable for passing through the pylorus or intestinal bends, preventing catheterization stagnation or tissue damage caused by sudden increases in local resistance.

[0067] In some specific implementations, the electric cable threader can employ a miniature DC motor combined with a worm gear transmission structure to achieve precise adjustment of the optical cable feeding speed; the pneumatic cable threader can use compressed air to drive a double-acting cylinder to achieve bidirectional rapid movement of the optical cable. A microwave generator can be integrated inside the operating handle, transmitting vibrational energy through the internal metal layer of the optical cable or a dedicated vibration-conducting fiber.

[0068] Through the above technical solution, this application can effectively address the difficulty of passing through narrow or tortuous parts of the digestive tract when quickly inserting a catheter. At the same time, vibration intervention reduces the frictional resistance between the catheter and the tissue, thereby reducing the risk of catheter placement failure due to sudden changes in resistance during the operation.

[0069] This application further proposes that the outer diameter of the visible optical cable is smaller than the inner diameter of the main tube, and that the visible optical cable structure is a composite structure of flexible fiber bundle and sheath layer, and that the visible optical cable is connected to a portable visualization device for signal connection.

[0070] The flexible fiber bundle and sheath layer composite structure consists of multiple flexible optical fibers arranged in parallel to form an imaging bundle, with an outer insulating sheath layer made of polymer material, specifically polyurethane or silicone. A transition layer 24 and a supporting hydrophilic layer 25 are sequentially arranged on the surface of the sheath layer, and the outer surface of the optical cable can be designed with a spiral pattern. The portable visualization device signal connection establishes a data transmission channel with external devices through a micro-interface module integrated at the end of the optical cable, specifically using USB-C or wireless transmission protocols. This design enables real-time transmission of image data to terminal devices such as mobile phones and tablets.

[0071] Specifically, the flexible fiber bundle is configured with 10 to 15 fibers per square millimeter, and the sheath thickness is controlled within the range of 0.1 to 0.3 millimeters. This ensures the fiber optic cable can move freely within the catheter while preventing fiber breakage due to excessively small outer diameter. As the cable enters the intestine with the catheter, its helical pressure-resistant texture disperses the radial pressure exerted by the intestinal wall, while the flexibility of the fiber bundle allows it to adapt to the winding path of the intestine. Through a micro-interface module, the image data collected by the cable can be directly transmitted to a handheld mobile terminal used by medical staff, enabling real-time visual monitoring of the catheter's path.

[0072] Compared to existing technologies, traditional intestinal obstruction catheters rely on X-ray equipment for intermittent positioning, requiring multiple interruptions during insertion to obtain images. This solution, however, uses a built-in visualization fiber optic cable linked to a portable device, enabling continuous tracking of the catheter's position. The existing separate guidewire and fiber optic cable design increases operational complexity; this solution integrates the guidewire function into the fiber optic cable, achieving both guidance and imaging functions through a single component.

[0073] Through the above technical solution, this application enables the catheter to display the internal condition of the intestine in real time via a mobile terminal in emergency scenarios where fixed imaging equipment is lacking. The operator can dynamically adjust the direction of catheter advancement based on the images, avoiding the risk of accidental puncture due to blind operation. The size matching design of the optical cable and the catheter ensures that it will not obstruct the function of the drainage channel when moving within the lumen, while the compressive strength of the sheath layer ensures that the imaging quality is not affected by intestinal peristalsis.

[0074] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A visual intestinal obstruction catheter assembly, comprising a catheter (1), the catheter (1) including a main tube (11), a guide portion (12) disposed at the front end of the main tube, and a rear branch portion (13) disposed at the rear end of the main tube (11), characterized in that, It also includes a visual optical cable (2), one end of which is electrically connected to a camera (3), and the rear end is connected to a limiting mechanism (4).

2. The visual intestinal obstruction catheter assembly according to claim 1, characterized in that, It also includes an operating handle (5), the limiting mechanism (4) is disposed on the operating handle (5), and a visual optical cable turning mechanism (6) is installed in the operating handle (5) for controlling the turning operation of the visual optical cable (2).

3. The visual intestinal obstruction catheter assembly according to claim 2, characterized in that, It also includes a visible optical cable power mechanism (7), which enables the visible optical cable (2) to quickly enter or exit the conduit (1).

4. The visual intestinal obstruction catheter assembly according to claim 3, characterized in that, The visible optical cable power mechanism (7) can also cause the visible optical cable (2) to vibrate.

5. The visual intestinal obstruction catheter assembly according to claim 3, characterized in that, The visible optical cable power mechanism (7) is located inside the operating handle (5), and the operating handle (5) is provided with a switch button for the visible optical cable power mechanism.

6. The visual intestinal obstruction catheter assembly according to claim 1, characterized in that, It also includes a guide wire (8) for tube placement, which is an integral structure with the visible optical cable (2).

7. The visual intestinal obstruction catheter assembly according to claim 2, characterized in that, The visible optical cable steering mechanism adopts a linkage structure of micro gear set and traction steel wire. The gear shaft of the micro gear set extends to the outside of the handle and connects to the knob. One end of the traction steel wire is fixed to the output end of the gear set, and the other end is connected to the optical cable to control the bending angle change of the front end of the optical cable.

8. The visual intestinal obstruction catheter assembly according to claim 3, characterized in that, The visible optical cable power mechanism (7) is a mechanical spring threader, which can quickly pull the visible optical cable out of the conduit.

9. The visual intestinal obstruction catheter assembly according to claim 4, characterized in that, The visible optical cable power mechanism (7) includes a threading mechanism (71) and a vibration mechanism (72). The threading mechanism (71) is an electric threader or a pneumatic threader, which can enable the visible optical cable to quickly enter or exit the conduit. The vibration mechanism (72) is a microwave generator, which can transmit the vibration through the visible optical cable to the conduit.

10. The visual intestinal obstruction catheter assembly according to claim 1, characterized in that, The outer diameter of the visible optical cable is smaller than the inner diameter of the main tube, and the visible optical cable structure is a composite cable body integrating optical fiber and electrical wire. The visible optical cable is connected to the portable visualization device for signal transmission.

Images