Visual catheter for evaluating blood vessel suturing quality

Abstract

The utility model relates to the technical field of medical instruments, and provides a visual catheter for evaluating blood vessel suturing quality, which comprises a flexible catheter, a visual component, a control component, a display device and a control switch, and one end of the flexible catheter is provided with an output interface; the visual assembly comprises an illumination optical fiber arranged at the other end of the flexible catheter, a micro camera and a controller; two X-axis coils, two Y-axis coils and a Z-axis coil are arranged on a base of the micro camera; the control assembly comprises an X-axis magnet, a Y-axis magnet and a Z-axis magnet; the display device is connected with the output interface and the micro camera through the optical fiber bundle; and the control switch is electrically connected with the output interface and the controller. Therefore, the suture quality of the inner wall of the blood vessel can be observed from the inner side of the blood vessel cavity at any time in an operation, the inner wall of the anastomotic stoma after the blood vessel is sutured is ensured to be neat, smooth and undistorted, the blood flow in the blood vessel cavity is smooth, and the operation failure caused by thrombosis after the operation due to the quality problem of the anastomotic stoma is reduced and prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a visual catheter for evaluating the quality of vascular suture. Background Art

[0002] With the rapid development of medical technology, various operations for suturing blood vessels (also known as anastomosing blood vessels) are widely used in the field of clinical medicine. For example, in various transplantation surgeries, in coronary artery bypass grafting surgeries in cardiac surgery and vascular surgery, in finger (limb) replantation surgeries in orthopedics, and in free flap surgeries in plastic surgery. The surgeries applying vascular suture have the characteristics of definite therapeutic effect, relatively small trauma, relatively short bedridden time for patients, and quick recovery. Suturing blood vessels is an operation performed on arteriovenous blood vessels of different sizes in the human body, and it is necessary to suture the ends of blood vessels. Due to the high difficulty of suturing blood vessels, to ensure that blood flow can be restored smoothly after blood vessel suture, the quality requirement for the suture of the anastomotic orifice of blood vessel ends is relatively high. It is required that the inner walls of the blood vessel anastomotic orifice be neatly aligned, smooth and without distortion after suture, and ensure that the lumen is unobstructed, and the suture lines are evenly distributed. It is also necessary to ensure that the inner walls on the front and back sides of the blood vessel lumen cannot be sutured together, and the anastomotic orifice will not be inverted or involved in the adventitia after suture. At the anastomotic orifice, the inner wall of the blood vessel lumen cannot protrude, sink or be distorted to cause the lumen to be unobstructed, turning the normal blood flow (laminar flow) into turbulent flow, which will inevitably form thrombus at the blood vessel anastomotic orifice after surgery, leading to surgical failure, causing huge waste of resources and great pain to patients. Currently, each relevant clinical specialty only evaluates the quality of vascular suture from the appearance, and cannot directly observe the quality (flat and smooth) of vascular suture from the inner wall of the blood vessel lumen. Therefore, there is a lack of a device for intuitively understanding the quality of vascular suture, which is also an actual problem that needs to be solved urgently in the field of clinical vascular suture.

[0003] The utility model patent with the application number CN201820200202.4 and the patent name "A test operation table for detecting the quality of vascular suture" also notices such problems. This utility model patent can simulate the human environment and judge the quality of vascular suture through the changes in time and pressure, but it is only applicable to detecting artificial blood vessels and can only be used as a test device for teaching, and cannot be applied in actual clinical practice.

[0004] Based on the above, the present application proposes a visual catheter for evaluating the quality of vascular suture, which can observe the suture condition of the inner wall of the blood vessel in real time from the inside of the blood vessel lumen to ensure the quality of vascular suture. Utility Model Content

[0005] The purpose of the utility model is to provide a visual catheter for evaluating the quality of vascular suture, aiming to improve the problem that it is difficult to observe the quality of current vascular suture.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A visible catheter for evaluating the quality of vascular suture, comprising:

[0008] A flexible catheter, one end of which is provided with an output interface;

[0009] A visible component, which includes an illumination optical fiber, a micro camera and a controller arranged at the other end of the flexible catheter. The head of the micro camera is a fixed end and is arranged at the other end of the flexible catheter. The base of the micro camera is a movable end. Two X-axis coils arranged symmetrically, two Y-axis coils arranged symmetrically and a Z-axis coil located on the bottom surface of the base are arranged on the base. The X-axis coil, the Y-axis coil and the Z-axis coil are connected in parallel and electrically connected to the controller;

[0010] A control component, which is arranged in the flexible catheter. The control component includes an X-axis magnet that is attracted or repelled by the magnetic force of the X-axis coil under the drive of the magnetic field force, a Y-axis magnet that is attracted or repelled by the magnetic force of the Y-axis coil, and a Z-axis magnet that is repelled by the magnetic force of the Z-axis coil;

[0011] A display device, which is connected and arranged to the output interface and the micro camera in sequence through an optical fiber bundle; and

[0012] A control switch, which is connected in series and electrically connected to the output interface and the controller in sequence.

[0013] Preferably, an accommodation cavity is arranged inside the other end of the flexible catheter. A transparent sheet is arranged at the orifice of the accommodation cavity. The head of the micro camera is arranged on the transparent sheet;

[0014] The X-axis magnet and the Y-axis magnet are arranged on the inner side wall of the accommodation cavity, and the Z-axis magnet is arranged on the bottom of the accommodation cavity;

[0015] A plurality of wire passing holes are arranged on the bottom of the accommodation cavity.

[0016] Preferably, two X-axis magnets are symmetrically arranged, and two Y-axis magnets are symmetrically arranged.

[0017] Preferably, the illumination optical fiber is arranged on the outer contour of the orifice of the accommodation cavity.

[0018] Preferably, the display device is a mobile phone terminal, a laptop computer terminal or a tablet computer terminal.

[0019] Preferably, the control switch is a control handle or a control button.

[0020] Preferably, the flexible catheter is made of silicone rubber.

[0021] Preferably, the maximum diameter of the micro camera is less than 1 mm.

[0022] After adopting the above technical solution, compared with the background art, the utility model has the following advantages:

[0023] 1. The visual catheter of the utility model can be used to check the quality of blood vessel suture during the operation, monitor the situation of blood vessel suture during the operation, and also be used to observe the simulation of blood vessel suture in teaching practice. Its application scope is wide, including the suture of microvessels in plastic surgery, as well as the suture of larger blood vessels in vascular surgery and cardiac surgery. It is convenient for medical staff to observe the quality of the inner wall suture of blood vessels from the inner side of the lumen at any time during the operation, ensure that the inner walls of the anastomosis are neatly aligned, smooth and without distortion after blood vessel suture, avoid the situation of intussusception and entrapment of the outer membrane after anastomosis suture, and then ensure the smooth blood flow in the blood vessel lumen, reduce and prevent the surgical failure caused by secondary thrombosis formation due to the quality problem of the anastomosis after the operation.

[0024] 2. One end of the visual catheter of the utility model provided with a visual component can move with multiple degrees of freedom under the action of the magnetic field force generated by the coil and the magnet, so as to facilitate the visual catheter to extend into the blood vessel and accurately locate the position of blood vessel suture. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the visual catheter for evaluating the quality of blood vessel suture according to the utility model;

[0026] Figure 2 is Figure 1 a partial enlarged schematic view of part A in

[0027] Figure 3 is a cross-sectional view of the visual catheter for evaluating the quality of blood vessel suture according to the utility model.

[0028] DESCRIPTION OF THE REFERENCE NUMERALS

[0029] 10. Flexible catheter;

[0030] 101. Output interface; 102. Accommodation cavity; 1021. Transparent sheet; 1022. Wire passing hole;

[0031] 11. Visual component; 111. Illumination optical fiber; 112. Miniature camera; 1121. Base;

[0032] 11211. X-axis coil; 11212. Y-axis coil; 11213. Z-axis coil; 113. Controller;

[0033] 12. Control component;

[0034] 121. X-axis magnet; 122. Y-axis magnet; 123. Z-axis magnet;

[0035] 13. Display device; 14. Fiber optic bundle; 15. Power cord; 16. Control switch. Detailed implementation manner

[0036] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0037] In addition, it should be noted that: the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element of the present utility model must have a specific orientation, so it cannot be understood as a limitation to the present utility model.

[0038] When an element is referred to as "fixed to" or "disposed on" or "provided on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0039] Unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0040] Embodiment

[0041] Please refer to Figure 1 , Figure 2 and Figure 3 As shown, this embodiment provides a visual catheter for evaluating the quality of vascular suture, which can be used to check the quality of vascular suture during intraoperative vascular suture, can also be used to monitor the vascular suture situation during the operation, and can also be used to observe the simulation of vascular suture in teaching practice. Its scope of application is not limited to the manner disclosed in this embodiment.

[0042] Specifically, the visual catheter includes a flexible catheter 10, a visual component 11, a control component 12, a display device 13, and a control switch 16. One end of the flexible catheter 10 is provided with an output interface 101, and the visual component 11 is disposed at the other end of the flexible catheter 10. The visual component 11 includes an illumination optical fiber 111, a micro camera 112, and a controller 113. The display device 13 is connected to the output interface 101 and the micro camera 112 in sequence through an optical fiber bundle 14. The micro camera 112 is used to photograph and record the position of blood vessel suture, and transmits the image to the display device 13 through the optical fiber bundle 14 for medical staff to view. The illumination optical fiber 111 can be annularly arranged on the end face of the other end of the flexible catheter 10 for illumination, improving the visibility inside the blood vessel and facilitating the micro camera 112 to more clearly photograph and record the situation of blood vessel suture.

[0043] Furthermore, to facilitate the visual catheter to smoothly extend into the blood vessel and accurately locate the position of blood vessel suture, the visual catheter can be controlled to move in multiple degrees of freedom along the X-axis, Y-axis, and Z-axis. For the X-axis, Y-axis, and Z-axis, please refer to Figure 3As shown in the coordinate system, where the X-axis direction is perpendicular to the plane formed by the Z-axis and the Y-axis. Specifically, the head of the micro camera 112 is the fixed end, and the fixed end can be fixedly arranged on the other end of the flexible catheter 10 by gluing to support the micro camera 112. The base 1121 of the micro camera 112 is the movable end, and two symmetrically arranged X-axis coils 11211, two symmetrically arranged Y-axis coils 11212 and a Z-axis coil 11213 located on the bottom surface of the base 1121 are arranged on the base 1121 of the micro camera 112. A control component 12 is also arranged in the flexible catheter 10. The control component 12 includes an X-axis magnet 121 arranged opposite to the X-axis coil 11211, a Y-axis magnet 122 arranged opposite to the Y-axis coil 11212, and a Z-axis magnet 123 arranged opposite to the Z-axis coil 11213. The X-axis coil 11211, the Y-axis coil 11212 and the Z-axis coil 11213 are connected in parallel and electrically connected to the controller 113, and the control switch 16 is sequentially connected in series with the output interface 101 and the controller 113. Since the X-axis coil 11211, the Y-axis coil 11212 and the Z-axis coil 11213 are independent power supply circuits, signals can be transmitted to the controller 113 through the control switch 16 to provide currents for the X-axis coil 11211, the Y-axis coil 11212 and the Z-axis coil 11213 respectively. After the coils are energized, a magnetic field force is generated between the coils and the magnets, and the movable end of the micro camera 112 moves under the drive of the magnetic field force. For example, when the X-axis coil 11211 is energized, under the drive of the magnetic field force, the X-axis coil 11211 repels the opposite X-axis magnet 121, causing the movable end of the micro camera 112 to move along the X-axis direction. When two X-axis magnets 121 are symmetrically installed, opposite magnetic forces can be formed. When a positive or negative current is passed through the X-axis coil 11211, the movable end of the micro camera 112 can obtain drives in different directions (the positive or negative direction of the X-axis) on the X-axis. Similarly, the Y-axis coil 11212 and the Y-axis magnet 122 can also be driven by the same principle; the Z-axis coil 11213 and the Z-axis magnet 123 provide a driving force for forward propulsion.

[0044] Moreover, since the head of the micro camera 112 is the fixed end and is installed on the other end of the flexible catheter 10, when the movable end moves, the fixed end can drive the other end of the flexible catheter 10 to move synchronously, so that the other end of the flexible catheter 10 provided with the visual component 11 can adjust the direction, realizing flexible control to accurately locate the flexible catheter 10 inserted into the blood vessel to find the position of blood vessel suture.

[0045] It should be noted that the controller 113 can be a microcontroller with a small volume and a compact structure. An optional controller 113 is the STM32F103CBT6 microcontroller, so that the overall volume of the visual catheter is smaller, which is beneficial to the miniaturization of the visual catheter and facilitates its insertion into blood vessels.

[0046] The operation process of the visual catheter is specifically as follows: The control component 12 drives the other end of the flexible catheter 10 provided with the visual component 11 to move flexibly, so as to push the flexible catheter 10 into the blood vessel and accurately locate the position of blood vessel suture. Then, the micro camera 112 takes pictures and records the position of blood vessel suture, and transmits the image to the display device 13 for medical staff to view the situation of blood vessel suture.

[0047] In this way, it is convenient for medical staff to observe the quality of blood vessel inner wall suture from the inner side of the lumen at any time during the operation, ensuring that the inner walls at the anastomosis are neatly aligned, smooth and not distorted after blood vessel suture, avoiding the situation of intussusception and entrapment of the outer membrane after anastomosis suture, thereby ensuring smooth blood flow in the blood vessel lumen and reducing and preventing the surgical failure caused by secondary thrombosis formation due to anastomosis quality problems after surgery.

[0048] As Figure 3 shown, in this embodiment, an accommodation cavity 102 is arranged inside the other end of the flexible catheter 10. A transparent sheet 1021 is arranged at the orifice of the accommodation cavity 102. The transparent sheet 1021 can be transparent glass to prevent blood flow from entering the flexible catheter 10 through the orifice and damaging the components. Moreover, the head of the micro camera 112 is arranged on the transparent sheet 1021 to facilitate observing the situation of blood vessel suture. A plurality of wire passing holes 1022 are arranged at the bottom of the accommodation cavity 102 for the power line 15 connecting the control switch 16, the output interface 101 and the controller 113 in sequence to pass through, for the power line 15 of the illumination optical fiber 111 to pass through, and for the optical fiber bundle 14 connecting the micro camera 112 to pass through to connect the output interface 101 and the display device 13 in sequence.

[0049] In addition, the X-axis magnet 121 and the Y-axis magnet 122 are arranged on the inner side wall of the accommodating cavity 102, and the Z-axis magnet 123 is arranged on the bottom of the accommodating cavity 102. In a preferred embodiment, there are two symmetrically arranged X-axis magnets 121 and two symmetrically arranged Y-axis magnets 122 to strengthen the magnetic field force generated between the coil and the magnet, thereby strengthening the driving force for moving the movable end of the micro camera 112. It can also increase the degree of freedom of movement of the movable end of the micro camera 112. For example, when there are two symmetrically arranged X-axis magnets 121, the two X-axis magnets 121 are arranged opposite to the two X-axis coils 11211. By energizing the two X-axis coils 11211 respectively, the movable end of the micro camera 112 can be moved in the positive or negative direction of the X-axis under the action of the magnetic field force. The Y-axis coil 11212 and the Y-axis magnet 122 can also drive the movable end of the micro camera 112 to move in the positive or negative direction of the Y-axis based on the same principle.

[0050] As Figure 2 and Figure 3 shown, in this embodiment, the illumination optical fiber 111 is arranged on the outer contour of the opening of the accommodating cavity 102 to facilitate illumination, improve the visibility inside the blood vessel, facilitate finding the position of blood vessel suture, and enable the micro camera 112 to more clearly capture and record the situation of blood vessel suture.

[0051] As Figure 1 shown, in this embodiment, the display device 13 is a mobile phone terminal, a laptop computer terminal or a tablet computer terminal. The micro camera 112 captures and records the situation of blood vessel suture and transmits the image to the display device 13 through the optical fiber bundle 14 to facilitate medical staff to observe using the display device 13.

[0052] As Figure 1 shown, in this embodiment, the control switch 16 is a control handle or a control button.

[0053] As Figure 1 、 Figure 2 and Figure 3 shown, in this embodiment, the flexible catheter 10 is made of silicone rubber. Silicone rubber has high tear resistance, does not lose mechanical properties such as tensile strength and elasticity after long-term use, is not easily eroded by tissue fluid, adapts to the surrounding tissues without causing inflammation, is not carcinogenic, does not cause allergic reactions, can be implanted in the body, and can withstand necessary disinfection measures.

[0054] As Figure 1 、 Figure 2 and Figure 3 shown, in this embodiment, the maximum diameter of the micro camera 112 is less than 1 mm. For example, the micro camera 112 can be an OV6948 micro camera with a diameter of 0.575 mm, making the overall visual catheter miniaturized, facilitating the visual catheter to extend into smaller blood vessels for observation and improving practicability.

[0055] As described above, it is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A visual catheter for evaluating the quality of vascular suture, characterized in that: include: A flexible conduit, one end of which is provided with an output interface; A visual component, comprising an illumination optical fiber, a micro camera and a controller arranged on the other end of the flexible catheter, wherein the head of the micro camera is a fixed end and is arranged on the other end of the flexible catheter, and the base of the micro camera is a movable end, and the base is provided with two symmetrically arranged X-axis coils, two symmetrically arranged Y-axis coils and a Z-axis coil located on the bottom surface of the base, and the X-axis coil, the Y-axis coil and the Z-axis coil are electrically connected to the controller in parallel; A control component is arranged in the flexible catheter, and the control component includes an X-axis magnet that is attracted or repelled by the X-axis coil magnetic force under the drive of a magnetic field force, a Y-axis magnet that is attracted or repelled by the Y-axis coil magnetic force, and a Z-axis magnet that is repelled by the Z-axis coil magnetic force; A display device, which is sequentially connected to the output interface and the micro camera through an optical fiber bundle; and A control switch is electrically connected in series with the output interface and the controller in sequence.

2. The visual catheter for evaluating the quality of vascular suturing according to claim 1, characterized in that: The other end of the flexible conduit is provided with a receiving cavity, the cavity opening of the receiving cavity is provided with a transparent sheet, and the head of the micro camera is provided on the transparent sheet; The X-axis magnet and the Y-axis magnet are arranged on the inner side wall of the accommodating cavity, and the Z-axis magnet is arranged on the cavity bottom of the accommodating cavity; A plurality of wire passing holes are arranged on the bottom of the accommodating cavity.

3. The visual catheter for evaluating the quality of vascular suturing according to claim 2, characterized in that: Two X-axis magnets are symmetrically arranged, and two Y-axis magnets are symmetrically arranged.

4. The visual catheter for evaluating the quality of vascular suturing according to claim 2, characterized in that: The illumination optical fiber is arranged on the outer contour of the cavity opening of the accommodating cavity.

5. The visual catheter for evaluating the quality of vascular suturing according to claim 1, characterized in that: The display device is a mobile phone terminal, a notebook computer terminal or a tablet computer terminal.

6. The visual catheter for evaluating the quality of vascular suturing according to claim 1, characterized in that: The control switch is a control handle or a control button.

7. The visual catheter for evaluating the quality of vascular suturing according to claim 1, characterized in that: The flexible conduit is made of silicone rubber.

8. The visual catheter for evaluating the quality of vascular suturing according to claim 1, characterized in that: The maximum diameter of the micro camera is less than 1 mm.

Images