Visualized multi-angle deflection catheter

Abstract

The invention relates to a visualized multi-angle deflection catheter, which includes a catheter body, a rotating ring, and a receiving part. A plurality of flexible guide wires are disposed in the pipe wall of the catheter body, the rotating ring is integrally formed between the rear end of the catheter body and the instrument holding part, and the rotating ring is connected to the plurality of flexible guide wires. A working channel, a lens, an image channel, a plurality of water injection channels and a plurality of optical fibers are disposed inside the catheter body, the lens is disposed in the image channel and located at the front end of the catheter body. By rotating the rotating ring, the plurality of flexible guide wires are allowed to deflect along the catheter body, thereby controlling the front end of the catheter body to bend at multiple angles to facilitate surgery.

Description

Multi-angle flexible catheter with visualization The present invention relates to a flexible catheter with visualization, and more particularly to a multi-angle flexible catheter with visualization, the rotation direction of which can be controlled by a rotating ring. Flexible catheters are a vital tool widely used in the medical field. They are slender, flexible, and bendable tubular devices that can be inserted into blood vessels, the digestive tract, or other luminal structures in the human body for diagnostic or therapeutic purposes. Their design allows them to conform to the curves and turns of the human body, enabling them to reach locations inaccessible to traditional rigid instruments. Flexible catheters are mainly used in the following types of surgeries or medical procedures: cardiovascular interventional surgery, neurointerventional surgery, gastrointestinal examination and treatment, urological system surgery, respiratory system surgery or gynecological surgery, etc. In addition, flexible catheters are minimally invasive and allow doctors to enter the human body through very small incisions or natural openings, greatly reducing surgical trauma, lowering the risk of complications and shortening recovery time. Existing flexible catheters can also integrate multiple functions, such as imaging, sampling, drug administration, and resection, so that diagnosis and treatment can be completed in the same procedure. In particular, the imaging function allows doctors to further monitor the position and movement of the flexible catheter in the body in real time, increasing the safety and success rate of the operation. However, despite their various advantages, controlling the direction of flexible catheters once they enter the human body is a critical issue. Doctors need to precisely guide flexible catheters through complex vascular networks or other body cavities to reach the target location for diagnosis and / or treatment. Currently, the most common control method is wire control, which involves embedding one or more thin steel wires (control wires) within the flexible catheter wall. These wires extend from the distal end of the flexible catheter to a control handle at the proximal end. When the doctor operates the handle, they pull or release these control wires, thereby bending or straightening the distal end of the flexible catheter. Typically, flexible catheters can bend in one or two planes to achieve up-down, left-right, and right-left movement. Although the wire-pull control method has the advantages of intuitive operation and quick response, its disadvantages are limited bending angles and difficulty in achieving complex three-dimensional movements. Therefore, it is necessary to provide a flexible catheter that can achieve large-scale rotation at multiple angles to improve the usability of the flexible catheter. In view of the above problems, the inventors of the present invention have considered and designed a novel multi-angle flexible catheter with visualization to improve the problems caused by the above conventional technology. The object of the present invention is to provide a multi-angle flexible catheter with visualization, which includes a catheter body, a rotating ring and a receiving portion. A plurality of flexible guide wires are arranged in the tube wall of the catheter body, and the rotating ring is integrally formed between the end of the catheter body and the receiving portion, and the rotating ring is connected to the plurality of flexible guide wires; that is, the rotating ring is integrally connected to the end of the catheter body through the plurality of flexible guide wires, and the receiving portion is also connected to the end of the catheter body, so that the rotating ring is located between the two. The catheter body is internally provided with a working channel, a lens, an imaging channel, a plurality of water injection channels, and a plurality of optical fibers. The lens is located in the imaging channel and at the front end of the catheter body; the working channel is located above the imaging channel, and the plurality of water injection channels are located on both sides of the working channel and the imaging channel. The plurality of optical fibers are dispersed within the catheter body, avoiding the working channel, the imaging channel, and the plurality of water injection channels. The plurality of optical fibers can emit light, serving as an illumination source. Preferably, the diameter of the working channel is larger than the diameter of the imaging channel and the diameter of the plurality of water injection channels; more preferably, the diameter of the imaging channel is larger than the diameter of the plurality of water injection channels. Preferably, the number of the plurality of water injection channels is 2. The accommodating portion is provided with a working channel connecting port, an imaging channel connecting port and a plurality of water injection channel connecting ports relative to the other end connected to the rotating ring. The working channel connecting port is connected to the working channel for inserting a medical device therein so that the medical device can be moved along the working channel to the front end of the catheter body; the imaging channel connecting port is connected to the imaging channel for inserting the lens therein so that the lens can be moved along the imaging channel to the front end of the catheter body; the plurality of water injection channel connecting ports are respectively connected to the plurality of water injection channels for injecting physiological saline or liquid therapeutic agents therein. Preferably, there are two water injection channel connection ports. In order to arrange the working channel connection port, the imaging channel connection port and the plurality of water injection channel connection ports on the accommodating portion, the diameter of the accommodating portion gradually increases along the side where the working channel connection port, the imaging channel connection port and the plurality of water injection channel connection ports are arranged, thereby making the relative positions of the working channel connection port, the imaging channel connection port and the plurality of water injection channel connection ports wider, so as to facilitate the insertion of medical devices, the lens and the injection of physiological saline or liquid therapeutic agents into these connection ports. When the multi-angle flexible catheter with visualization is to be used, the lens to be used (such as an infrared lens, an optical lens, etc., but not limited to these) is inserted into the image channel connection port and moved along the image channel to the front end of the catheter body. The plurality of optical fibers provide illumination, and real-time images of the interior of the blood vessels, digestive tract or other tubular structures of the human body into which the multi-angle flexible catheter with visualization is inserted can be viewed. Secondly, in order to deeply observe, sample, administer medicine or treat the affected part in the human body, the multi-angle flexible catheter with visualization needs to be passed through the complex vascular network or other body cavity to reach the affected part; at this time, by rotating the rotating ring, the multiple flexible guide wires connected to it are twisted, so that the front end of the catheter body can be bent to easily pass through the vascular network or other body cavity to reach the affected part. Because the plurality of flexible guidewires have a limited degree of twisting, the rotating ring must be rotated clockwise or counterclockwise to bend the distal end of the catheter body to the desired angle. Preferably, the rotating ring can be rotated 270 degrees clockwise or counterclockwise. Therefore, if the desired bending angle cannot be achieved after the rotating ring is rotated to the 270-degree limit, the desired bending angle can be achieved by rotating the rotating ring in the reverse direction. Then, when the multi-angle flexible catheter with visualization reaches the affected part, the condition of the affected part is first checked through the lens, and corresponding measures are provided according to the condition of the affected part. If sampling or treatment of the affected part is required, the corresponding medical device can be inserted through the working channel connection port, and the medical device can be moved along the working channel to the front end of the catheter body to sample or treat the affected part (for example, remove the lesion). Finally, if the condition of the affected part cannot be clearly seen through the lens when inspecting, sampling or treating the affected part, physiological saline can be injected through the multiple water injection channel connection ports, so that the physiological saline flows along the multiple water injection channels to the front end of the catheter body to clean the affected part and clearly see the condition of the affected part; or if the affected part needs to be treated with drugs, liquid therapeutic agents can be injected through the multiple water injection channel connection ports, so that the liquid therapeutic agents flow along the multiple water injection channels to the front end of the catheter body to administer the drug to the affected part. The following is a detailed description of specific embodiments with reference to the accompanying drawings, which will make it easier to understand the purpose, technical content, characteristics and effects achieved by the present invention. To help the Review Committee better understand the technical features, content, and advantages of the present invention, as well as the effects it can achieve, the present invention is described in detail below using the accompanying drawings and embodiments. The figures used herein are for illustration purposes only and to assist in the description, and may not reflect the actual proportions and precise configurations of the present invention after implementation. Therefore, the proportions and configurations in the accompanying drawings should not be interpreted to limit the scope of the present invention in actual implementation. This is to be noted in advance. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the meanings commonly understood by one of ordinary skill in the art to which the invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and the present invention, and will not be interpreted as idealized or overly formal meanings unless explicitly defined as such herein. Please refer to Figures 1 to 3, which are respectively a schematic diagram of the visualized multi-angle flexible catheter claimed in the present invention, a cross-sectional schematic diagram of the catheter body, and a cross-sectional schematic diagram of a plurality of flexible guidewires arranged in the tube wall of the catheter body. The multi-angle flexible catheter 1 with visualization includes a catheter body 2, a rotating ring 3 and a receiving portion 4. A plurality of flexible guide wires 13 are arranged in the tube wall of the catheter body 2. The rotating ring 3 is integrally formed and arranged between the end of the catheter body 2 and the receiving portion 4, and the rotating ring 3 is connected to the plurality of flexible guide wires 13; that is, the rotating ring 3 is integrally connected to the end of the catheter body 2 through the plurality of flexible guide wires 13, and the receiving portion 4 is also connected to the end of the catheter body 2, so that the rotating ring 3 is located between the two. The catheter body 2 is internally provided with a working channel 8, a lens 11, an imaging channel 9, a plurality of water injection channels 10, and a plurality of optical fibers 12. The lens 11 is located in the imaging channel 9 and at the front end of the catheter body 2. The working channel 8 is located above the imaging channel 9, and the plurality of water injection channels 10 are located on both sides of the working channel 8 and the imaging channel 9. The plurality of optical fibers 12 are dispersed within the catheter body 2, avoiding the working channel 8, the imaging channel 9, and the plurality of water injection channels 10. The plurality of optical fibers 12 are all luminous, serving as illumination sources. Preferably, the diameter of the working channel 8 is larger than the diameter of the imaging channel 9 and the diameter of the plurality of water injection channels 10 ; and more preferably, the diameter of the imaging channel 9 is larger than the diameter of the plurality of water injection channels 10 . Preferably, the number of the plurality of water injection channels 10 is two. The accommodating portion 4 is provided with a working channel connection port 5, an imaging channel connection port 6 and a plurality of water injection channel connection ports 7 at the other end connected to the rotating ring 3. The working channel connection port 5 is connected to the working channel 8 for inserting a medical device therein so that the medical device can be moved along the working channel 8 to the front end of the catheter body 2; the imaging channel connection port 6 is connected to the imaging channel 9 for inserting the lens 11 therein so that the lens 11 can be moved along the imaging channel 9 to the front end of the catheter body 2; the plurality of water injection channel connection ports 7 are respectively connected to the plurality of water injection channels 10 for injecting physiological saline or liquid therapeutic agents therein. Preferably, there are two water injection channel connection ports 7 . In order to arrange the working channel connection port 5, the imaging channel connection port 6 and the plurality of water injection channel connection ports 7 on the accommodating portion 4, the diameter of the accommodating portion 4 gradually becomes larger along the side where the working channel connection port 5, the imaging channel connection port 6 and the plurality of water injection channel connection ports 7 are arranged, thereby making the relative positions of the working channel connection port 5, the imaging channel connection port 6 and the plurality of water injection channel connection ports 7 wider, so as to facilitate the insertion of medical devices, the lens 11 and the injection of physiological saline or liquid therapeutic agents into these connection ports. When the multi-angle flexible catheter 1 with visualization is to be used, the lens 11 to be used (such as an infrared lens, an optical lens, etc., but not limited to these) is inserted into the image channel connection port 6 and moved along the image channel 9 to the front end of the catheter body 2. The plurality of optical fibers 12 provide illumination, and real-time images of the interior of the blood vessels, digestive tract or other tubular structures of the human body into which the multi-angle flexible catheter 1 with visualization is inserted can be viewed. Secondly, please refer to Figures 4 to 6, which are schematic diagrams of the multi-angle flexible catheter with visualization claimed in the present invention, in which the front end of the catheter body is bent when the rotating ring rotates clockwise or counterclockwise, and front views of the front end of the catheter body being bent at different angles when the rotating ring rotates. In order to deeply inspect, sample, administer medicine or treat an affected part in the human body, the multi-angle flexible catheter 1 with visualization needs to be passed through a complex vascular network or other body cavity to reach the affected part; at this time, by rotating the rotating ring 3, the plurality of flexible guide wires 13 connected thereto are twisted, so that the front end of the catheter body 2 can be bent, so as to easily pass through the vascular network or other body cavity to reach the affected part. Because the plurality of flexible guidewires 13 have a limited degree of twisting, the rotating ring 3 must be rotated clockwise or counterclockwise to bend the distal end of the catheter body 2 to the desired angle. Preferably, the rotating ring 3 can be rotated 270 degrees clockwise or counterclockwise. Therefore, if the desired bending angle cannot be achieved after the rotating ring 3 has been rotated to the 270-degree limit, the desired bending angle can be achieved by rotating in the reverse direction. Next, when the multi-angle flexible catheter 1 with visualization reaches the affected part, the condition of the affected part is first checked through the lens 11, and corresponding measures are provided according to the condition of the affected part. If sampling or treatment of the affected part is required, the corresponding medical device can be inserted through the working channel connection port 5, and the medical device can be moved to the front end of the catheter body 2 along the working channel 8 to sample or treat the affected part (for example, remove the lesion). Finally, if the condition of the affected part cannot be clearly seen through the lens 11 when inspecting, sampling or treating the affected part, physiological saline can be injected through the multiple water injection channel connection ports 7, so that the physiological saline flows along the multiple water injection channels 10 to the front end of the catheter body 2 to clean the affected part and clearly see the condition of the affected part; or if the affected part needs to be treated with drugs, liquid therapeutic agents can be injected through the multiple water injection channel connection ports 7, so that the liquid therapeutic agents flow along the multiple water injection channels 10 to the front end of the catheter body 2 to administer the drug to the affected part. In summary, the visualized multi-angle flexible catheter provided by the present invention can not only illuminate the affected area and observe the condition of the affected area in real time, but also, by rotating the rotating ring provided thereon, multiple flexible guide wires can be bent along the catheter body, thereby controlling the front end of the catheter body to bend at multiple angles to facilitate surgery; in addition, physiological saline can be injected through multiple water injection channels to clean the affected area, or liquid therapeutic agents can be injected to treat the affected area, thereby making the visualized multi-angle flexible catheter provided by the present invention multifunctional and improving its practicality. Those skilled in the art will appreciate from the foregoing that the present invention may be embodied in other specific forms without altering the technical concepts or essential features of the present disclosure. In this regard, the exemplary embodiments disclosed herein are for illustrative purposes only and should not be construed as limiting the scope of the present disclosure. Rather, the present disclosure is intended to encompass not only these exemplary embodiments, but also various variations, modifications, equivalents, and other embodiments that may be within the spirit and scope of the present invention as defined in the appended claims. 1: Multi-angle flexible catheter with visualization 2: Catheter body 3: Rotating ring 4: Accommodation 5: Working channel connection 6: Image channel connection 7: Water injection channel connection 8: Working channel 9: Image channel 10: Water injection channel 11: Lens 12: Optical fiber 13: Flexible guide wire The present invention is further described below with reference to the accompanying drawings: Figure 1 is a schematic diagram of the visualized multi-angle flexible catheter claimed in the present invention; Figure 2 is a schematic cross-sectional diagram of the catheter body in the visualized multi-angle flexible catheter claimed in the present invention; Figure 3 is a schematic cross-sectional diagram of a plurality of flexible guide wires arranged in the tube wall of the catheter body in the visualized multi-angle flexible catheter claimed in the present invention; Figure 4 is a schematic diagram of the multi-angle flexible catheter claimed in the present invention, in which the front end of the catheter body is bent when the rotating ring rotates clockwise; Figure 5 is a schematic diagram of the multi-angle flexible catheter claimed in the present invention, in which the front end of the catheter body is bent when the rotating ring rotates counterclockwise; Figure 6 is a front view of the multi-angle flexible catheter claimed in the present invention, in which the front end of the catheter body is bent at different angles when the rotating ring rotates. 1: Multi-angle flexible catheter with visualization 2: Catheter body 3: Rotating ring 4: Accommodation 5: Working channel connection port 6: Image channel connection port 7: Water injection channel connection port

Claims

1. A multi-angle flexible catheter with visualization comprises: a catheter body, a plurality of flexible guide wires arranged in the wall of which; a rotating ring; and a receiving portion, wherein the rotating ring is integrally formed between the end of the catheter body and the receiving portion, and the rotating ring is connected to the plurality of flexible guide wires.

2. A multi-angle flexible catheter with visualization as described in claim 1, wherein the catheter body is provided with: a working channel; a lens; an imaging channel; a plurality of water injection channels; and a plurality of optical fibers, wherein the lens is arranged in the imaging channel and is located at the front end of the catheter body; the working channel is arranged above the imaging channel; the plurality of water injection channels are arranged on the left and right sides along the working channel and the imaging channel; and the plurality of optical fibers are dispersed inside the catheter body, avoiding the working channel, the imaging channel, and the plurality of water injection channels.

3. A multi-angle flexible catheter with visualization as described in claim 2, wherein the accommodating portion is provided with: a working channel connection port; an image channel connection port; and a plurality of water injection channel connection ports relative to the other end connected to the rotating ring, wherein the working channel connection port is connected to the working channel; the image channel connection port is connected to the image channel; and the plurality of water injection channel connection ports are respectively connected to the plurality of water injection channels.

4. The multi-angle flexible catheter with visualization as described in claim 2, wherein the diameter of the working channel is larger than the diameter of the imaging channel and the diameter of the plurality of water injection channels.

5. The multi-angle flexible catheter with visualization as described in claim 2, wherein the diameter of the imaging channel is larger than the diameter of the plurality of water injection channels.

6. A multi-angle flexible catheter with visualization as described in claim 3, wherein the diameter of the accommodating portion gradually increases along the side where the working channel connection port, the imaging channel connection port and the plurality of water injection channel connection ports are arranged, thereby making the relative positions of the working channel connection port, the imaging channel connection port and the plurality of water injection channel connection ports wider.

7. The multi-angle flexible catheter with visualization as described in claim 1, wherein the rotating ring can rotate 270 degrees in a clockwise or counterclockwise direction.

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