Modular miniature visual mirror

Abstract

This utility model relates to a modular miniature visual endoscope, comprising a miniature visual endoscope body, a surgical blade, and an interventional channel. The distal end of the miniature visual endoscope body is connected to an endoscope assembly, which includes a hollow tubular endoscope guide tube capable of extending into the target surgical site. The interventional channel and the surgical blade are detachably connected to the miniature visual endoscope body, respectively, by being sleeved on the outside of the endoscope guide tube. The size of the surgical blade matches the size of the interventional channel, allowing the miniature visual endoscope body with the surgical blade installed to deliver the endoscope assembly into the internal cavity of the interventional channel at the target surgical site, and ensuring that the distal end of the surgical blade reaches the distal end of the interventional channel. The surgical blade includes a blade body with a fixing sleeve at its proximal end. The surgical blade can be detachably connected to the miniature visual endoscope body by the engagement of the internal thread of the fixing sleeve with the external thread surrounding the proximal outer wall of the endoscope guide tube.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a modular miniature visual mirror. Background Technology

[0002] Traditional medical endoscope systems consist of three core components: a light source system, an endoscope system, and an image display system. In the field of orthopedic joint surgery, arthroscopy, as a special form of endoscope, plays a crucial role. The core design of an arthroscopy revolves around a sophisticated optical system, with its core being a rod-like endoscope system for image acquisition, surrounded by optical fibers for guiding the light source, and encased in a metal protective sheath to ensure structural stability and durability. This system is further refined into components such as the arthroscopic lens, camera, main unit, display, and cold light source. The arthroscopic lens is designed as a slender rod, exceeding 20 centimeters in length and approximately 4 to 5 millimeters in diameter, facilitating insertion into the joint cavity. Internally, it integrates optical fibers and a fluoroscopic device: the optical fibers transmit light from the cold light source to the joint cavity for illumination; while the fluoroscopic device captures images within the joint and transmits them via the camera to the main unit, ultimately displaying them on the screen for the physician's observation.

[0003] During the procedure, an arthroscope is inserted into the joint through a tiny incision in the skin (approximately 0.8 mm to 1.0 cm). It is then connected to a camera and display device to allow for direct observation of the internal joint structures and diagnosis of lesions. To perform the treatment, a separate incision is made as a working channel through which specialized surgical instruments are introduced, thus avoiding the extensive trauma of traditional open surgery. However, while this dual-incision technique (one observation channel incision and one working channel incision) achieves the goal of minimally invasive surgery, it also increases the risk of tissue damage because a working channel spanning both incisions needs to be established and maintained.

[0004] For orthopedic surgeries such as the release of fibrous sheath stenosis in the limbs, the release of myofascial tension, and lesions of the small joints of the limbs, some hospitals with the necessary facilities use arthroscopic surgery. However, due to current technological limitations, the application of the double-incision technique still faces the challenge of causing significant tissue damage.

[0005] CN209847314U discloses a wrist arthroscopy hook knife assembly, which includes a hook knife, a core rod, and a sleeve. The hook knife consists of a blade and a handle. The blade is a straight rod, and the handle is fixed to the right end of the blade. A pointed hook is formed at the left end of the blade. The core rod is a straight rod with a tapered left end. The sleeve is a straight tube with an axially penetrating straight core rod guide groove on its wall. The lengths of the core rod and the blade are both greater than the length of the sleeve, and the outer diameters of the core rod and the blade are both smaller than the inner diameter of the sleeve, so that the core rod and the blade can be inserted into the sleeve with a clearance fit.

[0006] The wrist arthroscopy hook knife assembly of this patent can locate the surgical target site through the cannula in conjunction with the arthroscope, and use the cooperation of the core rod and the cannula to mark the insertion direction of the hook knife, thereby guiding the release operation of the hook knife. Only a small incision is needed to perform median nerve release surgery of the wrist joint, which has the characteristics of small wound scars, rapid postoperative recovery and high surgical safety.

[0007] However, the cannula of this patented wrist arthroscopy hook knife assembly can only accommodate one of the components—the mandrel, the hook knife, or the arthroscopy head—at a time. This necessitates multiple insertions and removals of the corresponding components by medical staff at different stages of the surgery, such as positioning, cutting, and observation. For example, at the beginning of the surgery, the mandrel may need to be inserted for positioning, then removed, the hook knife inserted for cutting, the hook knife removed again, and finally the arthroscopy head inserted for observation and confirmation. This frequent component-changing process not only increases the number of surgical steps and prolongs the operation time but also increases the complexity of the surgery. Medical staff need to constantly switch between different components during the operation, which not only demands higher operational skills from them but also increases the risk of surgical errors.

[0008] Furthermore, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making this utility model, but due to space limitations, not all details and contents were listed in detail. However, this does not mean that this utility model does not have the features of these prior art. On the contrary, this utility model has all the features of the prior art, and the applicant reserves the right to add relevant prior art to the background art. Utility Model Content

[0009] In view of the shortcomings of the prior art, this application proposes a modular miniature viewing mirror, which aims to solve one or more technical problems in the prior art.

[0010] This utility model relates to a modular miniature visual endoscope, comprising a miniature visual endoscope body, at least one surgical blade, and an interventional channel. The interventional channel is detachably mounted on the miniature visual endoscope body and coaxially and detachably sleeved on the outer wall of the miniature visual endoscope body. When the miniature visual endoscope body, carrying the interventional channel, enters through a superficial incision, passing through subcutaneous tissue, fascia, and intermuscular spaces to reach the surgical area, the interventional channel can be separated from the miniature visual endoscope body in a non-rotational manner and remain inside the body. When the miniature visual endoscope body is separated from the interventional channel, the proximal end of the corresponding surgical blade can be rotatably mounted on the outer wall of the miniature visual endoscope body, allowing the distal end of the corresponding surgical blade to enter the cavity of the interventional channel through the proximal end remaining outside the body. The interventional channel is positioned by engaging with the tissue surface of the surgical area via an axially extending notch at its distal end, the axial length of which covers the maximum travel of the distal end of the surgical blade. The notch has an axial length sufficient for the corresponding surgical blade to perform at least a cutting operation. This utility model's modular miniature endoscope aims to solve the challenges of minimally invasive endoscopic treatment in orthopedic surgeries, such as those involving narrow fiber optic intervention channels in the limbs, myofascial tension, loosening of thickened ligaments, and lesions of small joints in the limbs. By designing the surgical instruments and intervention channels to be detachably connected to the miniature endoscope body, the goal of minimally invasive surgery is achieved. This design allows for surgery through a single incision, significantly reducing surgical trauma and postoperative recovery time. The connection and disconnection between the intervention channel and the outer wall of the miniature endoscope body are achieved in a non-rotational manner, avoiding torsion of the intervention channel.

[0011] This design allows for the replacement of different functional instrument bodies during surgery as needed, avoiding the cumbersome process of frequently changing the entire set of instruments in traditional surgery and significantly shortening the operation time. In addition, the design of the instrument body located at the distal end of the surgical instrument and coaxially nested in the hollow cavity of the intervention channel restricts tissue processing functions (such as cutting and dissection) within the channel, reducing the risk of instrument displacement through physical guidance.

[0012] According to a preferred embodiment, the miniature visual endoscope body extends axially with an endoscope assembly. The radial dimensions of the endoscope assembly satisfy the following: the intervention channel is coaxially fitted on the radially outer side of the corresponding surgical instrument; the corresponding surgical instrument is coaxially fitted on the radially outer side of the endoscope assembly; the intervention channel, the corresponding surgical instrument, and the endoscope assembly can form a three-level nested structure from the outside to the inside. The precise matching of the size of the surgical instrument to the inner diameter of the intervention channel ensures that the surgical instrument can be smoothly and stably inserted into the intervention channel, thereby improving the accuracy and reliability of the surgery. At the same time, the integrated design allows the surgical instrument and the intervention channel to be quickly connected and disconnected from the miniature visual endoscope body, simplifying the surgical procedure and improving surgical efficiency.

[0013] According to a preferred embodiment, the endoscope assembly includes a tubular endoscope guide extending axially, with a camera and a light source located at the distal end of the endoscope guide. The camera is used to capture images of the surgical area, while the light source provides uniform and adjustable illumination to ensure clear images are always available under different surgical conditions.

[0014] According to a preferred embodiment, the blade body of the corresponding surgical instrument is configured at its distal end as a cutting blade, a suture retractor, or a dissector. When the tubular blade body of the corresponding surgical instrument extends distally along the axial direction of the endoscope catheter, passes through the proximal opening of the interventional channel, and enters the predetermined surgical site through its inner cavity, the field of view of the camera at the distal end of the miniature endoscope body covers the operating area defined by the distal end of the corresponding blade body and the axially extending notch of the interventional channel. The camera's field of view simultaneously covers the distal end of the surgical instrument and the notch-limited area of ​​the interventional channel, allowing medical personnel to observe the real-time movements of the cutting blade, suture retractor, or dissector, and to determine the operating range through the notch boundary. This enables precise tissue processing within narrow fibrous sheaths or joint cavities, avoiding accidental damage to blood vessels and nerves.

[0015] According to a preferred embodiment, the blade body of the corresponding surgical instrument has a blade tube with a distal port designed with an angled opening. The plane of the angled opening of the distal port is inclined relative to the axis of the blade tube, such that the plane of the angled opening forms an obtuse angle with the distal extension arm of the blade tube with the blade tip. This distal port allows at least partial axial exposure of the distal end of the endoscope guide tube, thereby obtaining a wider field of view or a wider illumination width. The angled port ensures the effective operating length of the blade tip while providing forward field of view extension space for an off-center-positioned camera. During surgery, the angled opening prevents the blade tube from completely obstructing the lens, enabling simultaneous observation of instrument movements and surgical field images.

[0016] According to a preferred embodiment, the notch in the intervention channel extends axially in such a way that it is formed on at least a portion of the circumferential wall of the intervention channel, providing operating space for cutting, suturing, or peeling to the cutting blade, suture hook, or peeler formed at the distal end of the corresponding tool body. The notch extends axially along the circumferential wall of the intervention channel, forming an open lateral operating space. The design of the notch's axial length covering the maximum stroke of the tool further ensures controlled operation throughout the entire process.

[0017] According to a preferred embodiment, the non-rotational method includes magnetic connection, elastic snap-fit, and friction clamping. Magnetic connection achieves rapid adsorption and axial separation through a ring-shaped magnetic attractant, avoiding interference from rotational movements on the already positioned intervention channel; elastic snap-fit ​​provides tactile feedback through the engagement of a locking boss and groove, ensuring controllable separation force; friction clamping uses a high-friction material with an interference fit, simplifying the separation operation while maintaining connection stability. All three methods avoid the channel torsion risk caused by traditional rotational separation.

[0018] According to a preferred embodiment, the diameter of the endoscope assembly is between 1 and 3 mm, and the length of the endoscope assembly is between 10 and 20 cm. This size range ensures the structural strength of the endoscope catheter while adapting to the operational needs of the anatomical sites of the finger flexor tendon sheath.

[0019] According to a preferred embodiment, the camera and light source establish image signal and power supply connections with the main control board of the miniature visual mirror body via connecting wires inside the endoscope's conduit. The connecting wires are embedded in the endoscope's conduit wall, avoiding the risk of external entanglement and preventing electromagnetic interference through multi-layer shielding. The direct connection design between the main control board and the camera and light source shortens the signal transmission path, and combined with the sealed structure of the housing, ensures that the level of protection against body fluid penetration meets the requirements of the complex environment of orthopedic surgery.

[0020] According to a preferred embodiment, the miniature visual endoscope body has a wireless module or a wired interface for establishing an external signal connection to transmit images. The wired interface supports real-time transmission of high-definition images to the surgical navigation system, while the wireless module allows the surgeon to remotely observe the surgical field via a mobile terminal. This design is compatible with different hospital equipment configurations and can simultaneously connect to multimodal imaging equipment during minimally invasive surgery, improving the operational safety of complex cases. Attached Figure Description

[0021] Figure 1 This is an anatomical diagram of the modular miniature viewing mirror of this utility model; Figure 2 This is a schematic diagram of the overall structure of the miniature visual mirror body and the intervention channel when they are assembled. Figure 3 yes Figure 2 Internal sectional view; Figure 4 yes Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a schematic diagram of the structure of the miniature visual mirror body and surgical instruments of this utility model before they are assembled; Figure 6 This is a schematic diagram of the internal structure of the fixing sleeve of the surgical instrument of this utility model; Figure 7 This is a schematic diagram of the miniature visual endoscope body and surgical instruments of this utility model moving through the interventional channel after being assembled. Figure 8 This is an anatomical diagram of the main body of the miniature viewing mirror of this utility model; Figure 9 This is a schematic diagram of the internal components of the housing of this utility model.

[0022] List of reference numerals 100: Miniature visual endoscope body; 110: Endoscope assembly; 111: Endoscope guide tube; 112: Camera; 113: Light source; 114: Connecting cable; 120: Housing; 121: End cap; 122: Main control board; 123: Bracket; 124: Battery; 125: Button; 200: Surgical instrument; 210: Instrument body; 211: Instrument tube; 212: Instrument head; 213: Distal port; 220: Fixing sleeve; 230: Retaining ring; 240: Sealing ring; 300: Intervention channel; 310: Limiting groove; 320: Inlet. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings.

[0024] Orientation definition: The end of the device furthest from the operator is the far end, and the end closest to the operator is the near end.

[0025] This utility model relates to a modular miniature viewing mirror, such as Figure 1 As shown, the operating tool mainly comprises three parts: a miniature visual endoscope body 100, at least one surgical blade 200, and an interventional channel 300. These three parts are modularly assembled and functionally switchable through an axial nesting relationship. The miniature visual endoscope body 100 consists of two parts: a proximal part serves as the operating grip, and a distal part extends a hollow endoscope tube 111 that connects to the corresponding surgical blade 200 via rotation. The interventional channel 300, as the outermost guiding structure of the device, has a notch on its distal sidewall, and its proximal open cavity size can be matched with the outer diameter of the corresponding surgical blade 200, forming the insertion path for the miniature visual endoscope body 100 and the corresponding surgical blade 200. With the miniature visual endoscope body 100 and the interventional channel 300 axially connected, the miniature visual endoscope body 100, carrying the interventional channel 300, enters through the patient's surface incision, passing through subcutaneous tissue, fascia, and intermuscular spaces to reach the surgical area. At this point, the miniature visual endoscope 100 is disconnected from the intervention channel 300 in a non-rotational manner. The intervention channel 300 can then be independently placed in the patient's surgical area by means of a notch that engages with the surface of the surgical tissue to form an operating channel from the body surface to the body. The notch of the intervention channel 300 includes openings extending axially along at least part of the circumferential wall, preferably on both radial sides of the wall. These openings allow the area to be operated on, such as abnormally proliferating fascia, to enter the inner wall of the intervention channel 300. Thus, the notch provides operating space for cutting, suturing, or dissection during surgery.

[0026] Preferably, the connection and disconnection between the interventional channel 300 and the micro-visual endoscope body 100 is non-rotational, while the connection and disconnection between the corresponding surgical instrument 200 and the micro-visual endoscope body 100 is rotational. This differentiated design aims to meet the dual requirements of instrument positioning stability and operational flexibility in minimally invasive surgery. The interventional channel 300 needs to remain in its original position after reaching the surgical area, forming a stable and independent operating channel, which is particularly suitable for areas sensitive to anatomical positioning, such as joint cavities and neurovascular bundle gaps. If a rotational separation mechanism is used, the interventional channel 300 may fail to adhere to the surrounding tissues due to torsion, affecting the accuracy of subsequent operations. For example, the non-rotational connection between the interventional channel 300 and the micro-visual endoscope body 100 includes magnetic connection, elastic snap-fit, and friction clamping. When the two are connected magnetically, an annular magnetic connector is embedded in the proximal inner wall of the interventional channel 300, and a corresponding magnetic connector is provided on the micro-visual endoscope body 100. The two are temporarily fixed by magnetic attraction. During separation, only axial tension is required to disconnect the magnetic interface, avoiding any rotational movement. When the two are connected by an elastic snap-fit ​​mechanism, the proximal end of the intervention channel 300 is provided with an elastic snap-fit ​​arm, the end of which has a radially protruding locking boss that engages with the annular groove of the miniature visual mirror body 100. Upon release, axial displacement causes the snap-fit ​​arm to elastically deform, disengaging the boss from the groove for rapid separation. When the two are held together by friction, the proximal inner wall of the intervention channel 300 is made of a high-friction coefficient material (such as a silicone bushing), which is interference-fitted with the corresponding outer wall of the miniature visual mirror body 100. Separation is achieved by overcoming friction with axial tension, without the need for rotation.

[0027] Multiple surgical instruments 200 need to support rapid intraoperative replacement, and their connection must balance locking force and disassembly efficiency. A rotary design improves operational efficiency through the controllability of the mechanical structure. For example, in knee arthroscopy, surgical instruments 200 with a distal end configured as a cutting blade are preferentially selected. They are locked via threaded engagement, and after cartilage trimming, can be disassembled by rotating counterclockwise. Then, surgical instruments 200 with a distal end configured as a suture hook are used for suturing, without requiring adjustment of the interventional channel 300's positioning throughout the procedure. Exemplarily, the rotary connection between multiple surgical instruments 200 and the miniature visual endoscope body 100 can be achieved through threaded engagement, helical snap-fit, and ratchet structures. When threaded engagement is used, the corresponding mating outer wall of the miniature visual endoscope body 100 is machined with external threads, and the inner wall of the proximal fixing sleeve 220 of the corresponding surgical instrument 200 is provided with internal threads. Rotating the fixing sleeve 220 clockwise locks the threaded engagement, and rotating counterclockwise unlocks it. When both components use a spiral snap fastener, the inner wall of the fixing sleeve 220 is provided with a spiral guide groove, and the corresponding outer wall of the miniature viewing mirror body 100 is provided with a locking boss. Rotating the fixing sleeve 220 moves the boss along the spiral groove to the locking position, and rotating it in the opposite direction releases the engagement. When both components use a ratchet mechanism, the fixing sleeve 220 integrates a one-way ratchet, which engages with the ratchet rack on the corresponding outer wall of the miniature viewing mirror body 100. Rotating it in the forward direction locks the mechanism, and pressing the release button and rotating it in the reverse direction unlocks it, preventing accidental operation.

[0028] Preferably, such as Figure 2 , Figure 3 As shown, during initial assembly, the interventional channel 300 is fitted onto the outside of the endoscope catheter 111. It is temporarily fixed by the magnetic attraction between the annular magnetic element on the proximal outer wall of the endoscope catheter 111 and the magnetic connector on the proximal inner wall of the interventional channel 300. Once the endoscope catheter 111 carrying the interventional channel 300 reaches the target surgical area, medical personnel release the magnetic connection by applying axial tension, allowing the interventional channel 300 to remain in place and be positioned within the body. Figure 4As shown, the notch on the distal sidewall of the intervention channel 300 consists of a limiting groove 310 and an inlet 320, forming an oblique incision structure extending from the distal to the proximal end. This incision smoothly transitions along the channel axis, with two symmetrically arranged U-shaped limiting grooves 310 on both sides, their cross-sections forming continuous U-shaped depressions. The limiting groove 310 extends from the incision origin towards the proximal end, its opening sidewall designed as a smooth flare, capable of mechanically engaging with the fascia, ligaments, and other tissues surrounding the surgical area, effectively constraining lateral tissue displacement. The axial length of the limiting groove is greater than the maximum travel of the distal end of the surgical blade 200, ensuring that the blade is fully restricted by the groove boundary during longitudinal cutting or release operations, preventing over-range operation. The end of the limiting groove 310 seamlessly connects to the inlet 320, with the bottom of the inlet forming a smooth transition interface through an arc-shaped contour. The arc-shaped design of its edges isolates the lesioned tissue into the internal cavity of the channel, while avoiding sharp edges from scratching surrounding normal tissue. The opening width of the inlet 320 is slightly larger than the diameter of the distal working part of the surgical blade 200, allowing the blade to move freely while suppressing lateral displacement through sidewall contact. After the surgical blade 200 is threadedly engaged with the endoscope catheter 111 via the retaining sleeve 220, its tubular blade body 210 is coaxially nested within the interventional channel 300. The distal blade tip 212 reaches the operating area constrained by the inlet 320 under the field of view of the distal camera 112 of the endoscope catheter 111. An annular retaining ring 230 disposed inside the retaining sleeve 220 abuts against the root end face of the external thread of the endoscope catheter 111, preventing axial pressure on the blade body 210 when the thread is screwed in. Several annular sealing rings 240 are integrated on the side of the retaining ring 230 near the blade body 210. These sealing rings 240 are embedded in the annular groove on the proximal outer wall of the blade body 210 by interference fit, forming a radial seal with the inner wall of the retaining sleeve 220 through physical contact.

[0029] Preferably, when medical personnel disassemble the surgical instrument 200, the miniature visual endoscope body 100 and the surgical instrument 200 are first withdrawn axially along the interventional channel 300, and then the threaded lock between the surgical instrument 200 and the miniature visual endoscope body 100 is released by rotating the retaining sleeve 220 in the opposite direction. At this time, the interventional channel 300 remains in place, forming a stable instrument channel. During the replacement of the surgical instrument 200, the proximal opening of the exposed interventional channel 300 is exposed outside the body, and medical personnel can insert a new surgical instrument 200 to complete the secondary assembly to complete the subsequent surgical operation. Throughout the operation, medical personnel can observe the relative position of the instrument tip (the distal tip 212 of the surgical instrument 200) and the tissue in real time through the camera 112. When the miniature visual endoscope body 100 is axially advanced or rotated, the limiting structure of the interventional channel 300 prevents lateral displacement, ensuring that the tip 212 moves only within the preset path to achieve the surgical operation.

[0030] Preferably, the intervention channel 300 can be designed as a sheath structure commonly used in minimally invasive and arthroscopic surgeries. The sheath can protect surrounding tissues, prevent surgical instruments from damaging tissues during insertion and operation, and through the inlet 320, isolate the tendon sheath or ligament tissue that needs to be loosened, narrowed, or thickened within the sheath, achieving precise incisions without damaging normal tissues.

[0031] Preferably, such as Figure 1 As shown, the miniature viewing mirror body 100 includes a housing 120 connected to the mirror assembly 110. The housing 120 is equipped with a main control board 122, which is electrically connected to the mirror assembly 110 via a connecting cable 114 to ensure the stability and reliability of information transmission.

[0032] The diameter of the endoscope assembly 110 can be set between 1 and 3 mm, smaller than the 4 to 5 mm diameter of traditional arthroscopy. This compact size allows the miniature endoscope to enter the human body through smaller incisions, reducing surgical trauma. The length of the endoscope assembly 110 can be configured between 10 and 20 cm, which is more compact than the 20 cm or more length of traditional arthroscopy, making it easier to operate in confined spaces.

[0033] The core component of the endoscope assembly 110, the endoscope catheter 111, has a slender, hollow structure with a degree of flexibility for operation in complex anatomical structures. The inner wall of the endoscope catheter 111 is designed to be smooth to reduce friction and damage to surrounding tissues during insertion. A camera 112 and a light source 113 are integrated at the distal end of the endoscope catheter 111. The camera 112 captures images of minute surgical areas, while the light source 113 is configured as a high-brightness LED to provide uniform and adjustable illumination, ensuring clear images are always available under different surgical conditions. These two components are electrically connected to the main control board 122 inside the housing 120 via a connecting wire 114 within the endoscope catheter 111, ensuring real-time image transmission and efficient power supply. Furthermore, the connection between the endoscope catheter 111 and the housing 120 is designed with a sealed structure to prevent leakage of bodily fluids and the entry of external contaminants, ensuring a sterile environment during the surgical procedure. Preferably, as Figure 1 , Figure 9 As shown, a bracket 123 specifically designed to support the battery 124 is provided within the internal structure of the housing 120. This bracket 123 can be made of high-strength plastic sheeting and has a robust frame structure. Its proximal end is sealed by a tightly sealed end cap 121. A standardized charging interface is integrated into the surface of the end cap 121. This interface can be connected to the battery 124 wires using a standardized method, ensuring safe and reliable charging operations.

[0034] Preferably, such as Figure 9As shown, a main control board 122 is mounted on the bracket 123. Its rectangular shape ensures it matches the geometry of the internal cavity of the miniature viewing mirror body 100 housing 120, maximizing the use of internal space. The main control board 122 utilizes custom-printed main control board technology, integrating a microcontroller, memory, sensor interface circuitry, communication interface, and a series of necessary electronic components. These components are mounted on the non-conductive substrate of the main control board 122 and interconnected via conductive traces to form the required circuitry. The main control board 122, through its integrated wired interface (such as HDMI or USB) or wireless module (such as Wi-Fi or Bluetooth), can transmit image data captured by the camera 112 to an external display or computing device. This design allows medical personnel to view high-definition images of the surgical area during surgery, enabling more precise surgical procedures. Existing communication protocols and transmission technologies ensure the real-time performance and stability of the image data, meeting the stringent image quality requirements during surgery.

[0035] Preferably, such as Figure 9 As shown, the surface of the main control board 122 is arranged with several function buttons 125. These buttons 125 are mechanically connected to the main control board 122 and are designed to conform to industry standard sizes and shapes. Simultaneously, through holes matching the size of the buttons 125 are opened at corresponding positions on the exterior of the housing 120. The edges of the through holes are smoothed to reduce friction and resistance during operation. The buttons 125 and the through holes are precisely aligned during assembly, ensuring that the buttons 125 can smoothly pass through the housing 120 for operation by medical personnel. Medical personnel can control various functions of the arthroscope by operating these buttons 125. For example, specific combinations of buttons 125 can turn the power on or off; the adjustment buttons 125 can precisely control the brightness output of the built-in light source 113 to adapt to different surgical lighting needs; in addition, there are image processing related buttons 125, allowing medical personnel to perform magnification, reduction, and other processing operations on the captured images to obtain a clearer and more detailed surgical field of view. The realization of these functions all relies on the complex and precise control logic and algorithms inside the main control board 122. These control logics and algorithms can be easily implemented in a microcontroller through software programming. Modern microcontrollers are typically equipped with rich instruction sets and sufficient memory resources to run the aforementioned control programs.

[0036] Preferably, such as Figures 2-7As shown, the distal end of the intervention channel 300 forms an oblique incision running from one side to the opposite side, which unfolds smoothly along the sidewall of the intervention channel 300. Two symmetrically arranged limiting grooves 310 are positioned on both sides of the incision, extending continuously proximally along the intervention channel 300 from the incision origin. The limiting grooves 310 are designed to guide and position surgical instruments, with a U-shaped cross-section to provide better stability and reduce lateral movement of instruments during operation. At the proximal end of the limiting grooves 310, an arc-shaped inlet 320 is designed, its geometry optimized to reduce potential damage to surrounding tissues and enhance contact stability with tissues. The radius of the arc of the inlet 320 can adapt to different anatomical structures, ensuring that the intervention channel 300 naturally conforms to the tissue surface of the surgical area during the procedure, achieving stable anchoring. This design ensures the fixed position of the intervention channel 300 during the operation, providing a stable and safe channel for the subsequent introduction of the miniature visual endoscope body 100 and its endoscope catheter 111, as well as the external surgical instruments 200.

[0037] Before the surgical instrument 200 is assembled onto the endoscope catheter 111, this embodiment employs a connection mechanism based on the principle of magnetic connection to achieve a quick and detachable connection between the endoscope catheter 111 and the interventional channel 300. Specifically, an annular magnetic element with specific magnetic poles is embedded in the external threaded end face of the endoscope catheter 111, while an annular magnetic element with opposite magnetic poles is disposed on the proximal end face of the interventional channel 300. When the endoscope catheter 111 approaches the proximal end of the interventional channel 300, due to the magnetic attraction between the magnetic elements of both, they can automatically align and firmly connect magnetically together, forming a stable connection.

[0038] Preferably, Figure 6 This is a schematic diagram of the internal structure of the fixing sleeve 220 of the surgical tool 200 of this utility model. To show the internal structure, the external thread connecting to the end of the housing 120 is not cut out. Figure 6As shown, the retaining sleeve 220 of the surgical blade 200 is equipped with a retaining ring 230. Its main function is to directly contact the external thread near the proximal end of the endoscope guide tube 111 when the surgical blade 200 is connected to the miniature visual endoscope body 100, preventing unnecessary mechanical pressure on the blade body 210 and protecting the structural integrity of the blade body 210. Furthermore, several sealing rings 240 are integrated on the side of the retaining ring 230 near the blade body 210. These sealing rings 240 have a ring structure and are tightly arranged around the proximal sidewall of the blade body 210, effectively sealing the tiny gap between the blade body 210 and the inner sidewall of the retaining sleeve 220 through physical contact. The presence of the sealing rings 240 improves the overall sealing performance of the blade assembly, ensuring that liquids or gases do not leak or intrude through gaps during surgery, thus guaranteeing the safety and cleanliness of the surgical environment.

[0039] like Figure 5 As shown, the blade body 210 includes a hollow blade tube 211 with suitable cross-sectional dimensions and length to allow the endoscope guide tube 111 to smoothly pass through the blade tube 211 from the fixing sleeve 220 side. A surgical-specific blade head 212 is connected to the distal end of the blade tube 211. This blade head 212 is designed according to surgical requirements, possessing a specific geometry and functional structure to meet the needs of the surgical procedure. Figure 7 In the configuration shown, the length of the endoscope catheter 111, the length of the intervention channel 300, and the length of the blade body 210 are coordinated to ensure that when the surgical blade 200 is introduced into the intervention channel 300 through the endoscope catheter 111, the blade tip 212 at the distal end of the blade body 210 is completely within the protection range of the intervention channel 300.

[0040] like Figure 5 As shown, the port 213 of the blade tube 211 facing the blade head 212 is designed as an inclined opening. The plane of this inclined opening is inclined relative to the axis of the blade tube, and in particular, the plane of this inclined opening forms an obtuse angle with the distal extension arm with the blade head 212, which is between 100° and 160°, and particularly between 120° and 150°. Axially, the port 213 of the blade tube 211 allows the distal end of the scope guide 111 to be at least partially exposed, particularly on the side radially away from the blade head 212, so that one of the camera 112 and the light source 113 located at the distal end of the scope guide 111 can be minimized or completely unobstructed by the blade tube 211. Since the tubular scope guide 111 of the scope assembly 110 has the camera 112 and the light source 113 arranged eccentrically at the distal end (see... Figure 8Therefore, the bevel allows at least one of the camera 112 and the light source 113 to extend from the blade tube 211 earlier, thereby obtaining a significantly larger field of view or being able to illuminate the tissue to be operated on exposed inside the intervention channel 300 at a wider angle, so that the blade 212 can perform the corresponding visually guided surgical operation.

[0041] The following describes the operation steps of the integrated operating tool of this utility model: 1. For example Figure 2 , Figure 3 As shown, the intervention channel 300 is first assembled with the miniature visual endoscope body 100. Driven by the miniature visual endoscope body 100, the intervention channel 300 enters the tissue. Using the surgical field image, the location requiring surgery is found. The intervention channel 300 can then be secured to the tissue using its limiting groove 310 or inlet 320. Furthermore, through the inlet 320, the tendon sheath or ligament tissue that needs to be loosened, narrowed, or thickened is isolated within the intervention channel 300, achieving precise incision without damaging normal tissue.

[0042] 2. The intervention channel 300 is released from the arthroscope, and medical staff, based on their assessment, assemble a surgical instrument 200 with a suitable blade 212 onto the miniature visual endoscope body 100. For example... Figure 7 As shown, the medical staff once again inserted the miniature visual endoscope body 100, which is equipped with surgical blades 200, into the joint tissue through the channel formed by the intervention channel 300. Then, by pushing, pulling, and rotating the miniature visual endoscope body 100, they performed surgical operations such as cutting and releasing the ligaments, fibrous tissues, and fibrous intervention channel 300 to ensure that the actions were in place and the operation was reasonable.

[0043] 3. After the operation is completed, the main body 100 of the miniature visual mirror is pulled out as a whole, replaced with another type of blade 212, and the subsequent surgical operation is performed again.

[0044] It should be noted that the above specific embodiments are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this utility model, and these solutions all fall within the scope of this utility model and its protection scope. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and do not constitute a limitation on the claims. The protection scope of this utility model is defined by the claims and their equivalents. Throughout the text, features introduced by "preferred" are merely optional and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time.

Claims

1. A modular miniature visual endoscope, comprising a miniature visual endoscope body (100), at least one surgical instrument (200), and an interventional channel (300), wherein, The intervention channel (300) can be detachably installed on the miniature visual mirror body (100), characterized in that: When the micro-visual mirror body (100) carries the intervention channel (300) through an incision on the body surface and passes through the subcutaneous tissue to reach the surgical area, the intervention channel (300) can be separated from the micro-visual mirror body (100) in a non-rotational manner and remain in the body; When the miniature visual endoscope body (100) is separated from the intervention channel (300), the corresponding surgical instrument (200) can be installed on the miniature visual endoscope body (100), so that the corresponding surgical instrument (200) enters the inner cavity of the intervention channel (300) through the proximal end of the intervention channel (300) left outside the body; The intervention channel (300) is positioned by engaging with the tissue surface of the surgical area via an axially extending notch configured at its distal end, wherein the notch has an axial length for at least a cutting operation by a corresponding surgical instrument (200).

2. The modular miniature viewing mirror according to claim 1, characterized in that, The miniature viewing mirror body (100) extends axially with a mirror assembly (110), the radial dimension of which satisfies: The intervention channel (300) is coaxially sleeved on the radial outer side of the corresponding surgical instrument (200); The corresponding surgical instruments (200) are coaxially sleeved on the radial outer side of the endoscope assembly (110); The intervention channel (300), the corresponding surgical instrument (200), and the endoscope assembly (110) can form a three-level nested structure from the outside to the inside.

3. The modular miniature viewing mirror according to claim 2, characterized in that, The endoscope assembly (110) includes a tubular endoscope guide tube (111) extending along the axial direction, with a camera (112) and a light source (113) provided at the distal end of the endoscope guide tube (111).

4. The modular miniature viewing mirror according to claim 3, characterized in that, The blade body (210) of the corresponding surgical instrument (200) is respectively configured as a cutting blade, a suture reel, or a dissector at its distal end. When the tubular blade body (210) of the corresponding surgical instrument (200) extends distally along the axial direction of the endoscope catheter (111), passes through the proximal opening of the interventional channel (300), and enters the predetermined surgical site through its lumen, The field of view of the camera (112) at the far end of the miniature visual mirror body (100) covers the operating area defined by the far end of the corresponding tool body (210) and the axially extending notch of the intervention channel (300).

5. The modular miniature viewing mirror according to claim 4, characterized in that, The corresponding surgical instrument (200) has a blade body (210) with a blade tube (211) having a distal port (213) designed to be angled open. The plane of the angled opening of the distal port (213) is inclined relative to the axis of the blade tube, such that the plane of the angled opening forms an obtuse angle with the distal extension arm of the blade tube (211) with a blade tip (212). Thus, the distal port (213) allows the distal end of the endoscope guide tube (111) to be at least partially exposed in the axial direction in order to obtain a larger field of view or a wider illumination width.

6. The modular miniature viewing mirror according to claim 4, characterized in that, The notch of the intervention channel (300) extends axially in such a way that it is formed on at least a portion of the circumferential wall of the intervention channel (300) to provide operating space for cutting, suturing or peeling to the cutting blade, hook or peeler formed at the distal end of the corresponding tool body (210).

7. The modular miniature viewing mirror according to any one of claims 1 to 3, characterized in that, The non-rotational methods include magnetic connection, elastic buckle, and friction clamping.

8. The modular miniature viewing mirror according to claim 2, characterized in that, The diameter of the lens assembly (110) is between 1 and 3 mm, and the length of the lens assembly (110) is between 10 and 20 cm.

9. The modular miniature viewing mirror according to claim 5, characterized in that, The camera (112) and the light source (113) establish an image signal connection and power supply connection with the main control board (122) of the miniature visual mirror body (100) through the connecting line (114) in the mirror body guide tube (111).

10. The modular miniature viewing mirror according to any one of claims 1 to 3, characterized in that, The miniature viewing mirror body (100) has a wireless module or wired interface for establishing an external signal connection to transmit images.

Images