Arthroscopic device

Abstract

The application discloses a kind of arthroscope devices, it is related to arthroscope technical field, including mirror sheath body, arthroscope body and guide sealing structure;Wherein guide sealing structure includes the sealing portion that is axially arranged along the heteromorphic cavity, guide portion, boost portion and self-locking portion, sealing portion includes sealing structure, support structure and tensile structure, the folding avoidance of sealing structure is realized when mirror tube insertion by the sealing portion of guide sealing structure and tensile structure cooperation, avoid the continuous friction and abrasion of traditional sealing ring, significantly improve sealing and service life, reduce the risk of liquid leakage;The adjusting structure of its guide portion drives guide structure to form self-adapting inverted taper channel in conical cavity, combined with self-locking portion to realize the radial locking of mirror tube, realize fast and accurate insertion, reduce the difficulty and risk of operator operation arthroscope body insertion.

Description

Technical Field

[0001] This invention relates to the field of arthroscopy, and in particular to an arthroscopy device. Background Technology

[0002] In the field of modern minimally invasive surgery, arthroscopic surgery is widely used due to its advantages such as minimal trauma and rapid recovery. As the core instrument in this type of surgery, the rationality of the arthroscopic device's structural design and the ease of operation directly affect the surgical outcome.

[0003] Chinese Patent No. CN119257536B discloses an arthroscopic device, including a handle, a mounting rod mounted on the handle, an arthroscopic rod mounted on the mounting rod, a detection lens mounted on the end of the arthroscopic rod away from the handle, a transparent plate mounted on the end of the arthroscopic rod where the detection lens is mounted, the transparent plate sealing the end of the arthroscopic rod where the detection lens is located, and the electrical signal of the detection lens being transmitted to a circuit board inside the handle via a cable, and the electrical signal on the circuit board being transmitted to the outside for display via a cable at the end of the handle.

[0004] Traditional arthroscopic devices use a static annular sealing ring for their sealing structure. When the arthroscope is inserted, the tube continuously rubs against the sealing ring, causing wear on the sealing surface, leading to fluid leakage, affecting the clarity of the surgical field and increasing the risk of infection. Secondly, the insertion of the tube requires repeated angle adjustments to align it with the inner cavity of the sheath in order to avoid collision with the sealing ring structure and causing damage. This places high demands on the operator's skills and increases the complexity of the surgery.

[0005] Therefore, the present invention proposes an arthroscopic device to solve the above problems. Summary of the Invention

[0006] In view of the problems existing in the prior art, the present invention is proposed.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an arthroscopic device, comprising:

[0008] The mirror sheath body includes a double-valve rotatable sleeve and a sheath tube connected to the lower part of the double-valve rotatable sleeve. The double-valve rotatable sleeve has a shaped cavity formed inside and communicates with the inner cavity of the sheath tube. The shaped cavity includes a connecting upper cavity, a conical cavity and a connecting lower cavity connected in sequence.

[0009] The arthroscopy body includes a handle and an endoscope tube connected to the handle. The endoscope tube passes through a cavity and extends outward from the sheath. The handle is fastened to the connecting cavity and seals the cavity.

[0010] A guide sealing structure includes a sealing part, a guide part, a booster part, and a self-locking part arranged along the axial direction of an irregular cavity. The sealing part includes a sealing structure, a support structure, and a tensioning structure. The guide part is connected to the sealing structure through the tensioning structure. The tensioning structure, through its own expansion and contraction, synchronously drives the sealing structure and the guide part to move up and down along the support structure. The guide part includes a guide structure and an adjustment structure. The adjustment structure, through its own expansion and contraction, adjusts the width of the guide structure to drive the guide structure upward into the conical cavity and simultaneously drives the sealing structure to fold to expand the channel size allowing the endoscope tube to be inserted. The self-locking part is connected to the end of the guide structure opposite to the tensioning structure to synchronously move the guide structure to the upper cavity to guide the insertion of the endoscope tube.

[0011] The booster is connected to the guide structure and adjusts its position according to the change in the width of the guide structure, so as to abut against the self-locking part and adjust the angle of the self-locking part.

[0012] In a preferred embodiment of the arthroscopic device of the present invention, the number of sealing parts, guiding parts, pushing parts and self-locking parts are multiple sets, which correspond to each other and are distributed circumferentially along the axial direction of the conical cavity; the guiding structure includes an inner arc action component and an outer arc action component that are interlocked with each other, the inner arc action component includes an inner arc guide plate, an inner guide plate connected to both sides of the inner arc guide plate, and inner rolling balls arranged in an array along the inner arc surface of the inner arc guide plate, the inner rolling balls being rotatably disposed on the inner arc guide plate, and the surface of the inner guide plate having a guide groove penetrating through it;

[0013] The outer arc action component includes an outer arc guide plate, outer guide plates connected to both sides of the outer arc guide plate, and outer rolling balls arranged in an array along the outer arc of the outer arc guide plate. The end of the outer guide plate near the inner arc guide plate is equipped with a positioning pin, which passes through the guide groove and engages in the guide groove.

[0014] In a preferred embodiment of the arthroscopic device of the present invention, the outer arc guide plate is provided with a telescopic structure, and the adjustment structure adjusts the gap between the outer arc guide plate and the inner arc guide plate by its own telescopic movement, so as to drive the outer guide plates located on both sides of the outer arc guide plate to move along the length direction of the inner guide plate under the guidance of the positioning pin, and the outer arc guide plate is telescopically driven by the outer guide plates on both sides.

[0015] In a preferred embodiment of the arthroscopic device of the present invention, the adjustment structure includes two sets of bases respectively connected to the outer arc guide plate and the inner arc guide plate, a connecting plate rotatably connected to the two sets of bases, and a telescopic spring and a telescopic guide rod assembled between the two connecting plates. The telescopic guide rod is sleeved in the telescopic spring, and the gap between the inner arc guide plate and the outer arc guide plate is changed by the extension and retraction of the telescopic spring and the telescopic guide rod.

[0016] In a preferred embodiment of the arthroscopic device of the present invention, the sealing structure includes an asymmetrically arranged lower sealing plate and an upper sealing plate, the lower sealing plate and the upper sealing plate forming a fan-shaped plate structure, the lower sealing plate being fitted onto the inner wall of a dual-valve rotatable sleeve, the upper sealing plate including a silicone sealing strip laid along the edge of the upper sealing plate, and the upper sealing plate being pressed down to form a sealing connection with the lower sealing plate.

[0017] In a preferred embodiment of the arthroscopic device of the present invention, the upper sealing plate includes an upper outer sealing plate and an upper inner sealing plate hinged together. The upper outer sealing plate is connected to the lower sealing plate through a support structure and is driven by tension so that, under the guidance of the support structure, the upper outer sealing plate moves linearly upward relative to the lower sealing plate. The tension structure array is assembled on the side of the upper inner sealing plate opposite to the lower sealing plate.

[0018] In a preferred embodiment of the arthroscopic device of the present invention, the self-locking part includes two extension rods inserted into the side of the inner arc guide plate opposite to the lower sealing plate. A load-bearing plate is movably connected to the side of the two extension rods opposite to the inner arc guide plate. A horizontally arranged connecting rod is assembled between the two extension rods. An auxiliary aligning plate is rotatably connected to the connecting rod. The pusher pushes the auxiliary aligning plate to rotate so as to fit against the surface of the endoscope tube to lock the endoscope tube.

[0019] As a preferred embodiment of the arthroscopic device of the present invention, the connecting rod includes a central straight rod and lateral straight rods connected to both ends of the central straight rod, the lateral straight rods are assembled on the extension rod, and the auxiliary plate is rotatably connected to the central straight rod;

[0020] The auxiliary plate includes an arc-shaped bonding plate, an interlocking plate, and a triangular connecting plate connected as one piece. The side of the arc-shaped bonding plate facing away from the triangular connecting plate has multiple silicone protrusions arranged in an array.

[0021] In a preferred embodiment of the arthroscopic device of the present invention, the pusher includes an arc-shaped pusher plate and a plurality of inclined pushers of different lengths mounted on the arc-shaped pusher plate, the inclined surface of the inclined pusher plate abuts against the triangular connecting plate, and the arc-shaped pusher plate is mounted on the outer guide plate.

[0022] The arc-shaped booster plate is configured as a telescopic plate structure, and its extension and retraction are guided by the outer guide plate.

[0023] In a preferred embodiment of the arthroscopic device of the present invention, the handle includes a rear end and a front end of the handle that are movably connected, and the front end of the handle is fastened to the upper cavity of the connection.

[0024] The beneficial effects of this invention are as follows: This application achieves folding and avoidance of the sealing structure during endoscope insertion by cooperating with the sealing part of the guide sealing structure and the tensioning structure, thus avoiding continuous friction and wear of traditional sealing rings, significantly improving sealing performance and service life, and reducing the risk of liquid leakage; the adjustment structure of its guide part drives the guide structure to form an adaptive inverted conical channel in the conical cavity, combined with the self-locking part to achieve radial locking of the endoscope tube, achieving rapid and accurate insertion, reducing the difficulty and risk for the operator in inserting the arthroscopy body; in addition, the pusher part dynamically adjusts its position according to the change of the width of the guide structure, and links the angle of the self-locking part to ensure that the endoscope tube is always inserted along the axial direction, ensuring the accuracy of endoscope tube insertion. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the arthroscopic device in this invention;

[0027] Figure 2 This is a structural detail diagram of the handle in this invention;

[0028] Figure 3 This is a schematic diagram of the overall structure of the guide sealing structure in this invention;

[0029] Figure 4 This is an isometric view of the overall structure of the guide sealing structure in this invention;

[0030] Figure 5 This is a structural detail diagram of the sealing structure in this invention;

[0031] Figure 6 This is a structural detail diagram of the guide structure in this invention;

[0032] Figure 7 This is a structural detail diagram of the self-locking part in this invention;

[0033] Figure 8 In this invention Figure 7 Enlarged view of the A-section structure;

[0034] Figure 9 This is a structural detail diagram of the inner arc guide plate in this invention;

[0035] Figure 10 This is a structural detail diagram of the outer arc guide plate in this invention.

[0036] Explanation of reference numerals in the attached drawings: 11. Handle; 12. Lens tube; 21. Double-valve rotatable sleeve; 22. Sheath; 23. Flexible tube; 31. Self-locking part; 311. Support plate; 312. Extension rod; 313. Auxiliary straight plate; 3131. Arc-shaped fitting plate; 3132. Insertion plate; 3133. Triangular connecting plate; 3134. Silicone protrusion plate; 314. Connecting rod; 3141. Lateral straight rod; 3142. Central straight rod; 32. Guide part; 321. Guide structure; 3211. Inner arc guide plate; 3212. Inner guide plate; 3213. Guide groove; 3214. Outer arc guide plate; 32 15. Outer guide plate; 3216. Outer ball bearing; 3217. Inner ball bearing; 3218. Positioning pin; 322. Adjustment structure; 3221. Base; 3222. Connecting plate; 3223. Telescopic spring; 33. Sealing part; 331. Tensioning structure; 332. Support structure; 3321. Supporting bent rod; 3322. Limiting piece; 333. Sealing structure; 3331. Lower sealing plate; 3332. Silicone sealing strip; 3333. Upper outer sealing plate; 3334. Upper inner sealing plate; 334. Bridge plate; 34. Pushing part; 341. Arc-shaped pusher plate; 342. Angled pusher plate. Detailed Implementation

[0037] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0039] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0040] Arthroscopic surgery, as a core technology in minimally invasive orthopedic diagnosis and treatment, requires its core equipment to balance sealing, operational flexibility, and intraoperative stability. However, traditional arthroscopic devices have significant drawbacks: the sealing structure 333 is often designed as a circular sealing ring structure, which is statically assembled within the cavity of the arthroscopic sheath. When the arthroscopic body is inserted, the straight tube of the arthroscopic body continuously rubs against the sealing ring. After long-term use, the sealing surface wears down and fluid leaks, which not only affects the clarity of the surgical field but also increases the risk of infection. Secondly, the arthroscopic body needs to be inserted into the arthroscopic sheath. The operator needs to carefully observe the position of the cavity of the arthroscopic sheath to repeatedly adjust the insertion angle of the endoscope tube 12 to ensure accurate insertion of the arthroscopic body. This makes insertion difficult, and the straight tube of the arthroscopic body is also prone to damage to the sealing ring structure during insertion.

[0041] Reference Figures 1-10 As shown, this is the first embodiment of the present invention, which provides an arthroscopic device, comprising:

[0042] The arthroscopy sheath body includes a double-valve rotatable sleeve 21 and a sheath tube 22 connected to the lower part of the double-valve rotatable sleeve 21. The double-valve rotatable sleeve 21 has a shaped cavity that communicates with the inner cavity of the sheath tube 22. The shaped cavity includes a connecting upper cavity, a conical cavity, and a connecting lower cavity that are connected in sequence. The connecting lower cavity is connected to the inner cavity of the sheath tube 22. The arthroscopy body includes a handle 11 and an endoscope tube 12 connected to the handle 11. The endoscope tube 12 is inserted through the connecting upper cavity, passes through the conical cavity, the connecting lower cavity, and the inner cavity of the sheath tube 22 in sequence, and extends outward from the inner cavity of the sheath tube 22. The handle 11 is fastened to the connecting upper cavity and seals the shaped cavity. The handle 11 includes a movable handle rear end and a handle front end. The handle front end is fastened to the connecting upper cavity. The handle rear end is sleeved on the surface of the handle front end and rotates along the axis of the handle front end. By rotating the handle front end, the handle 11 is fastened to the double-valve rotatable sleeve 21.

[0043] Reference Figure 1 and Figure 2 As shown, a hose 23 is also connected to the dual-valve rotatable sleeve 21 to allow liquid to be introduced or discharged through the hose 23.

[0044] The guide sealing structure includes a sealing part 33, a guide part 32, a booster part 34, and a self-locking part 31 arranged along the axial direction of the irregular cavity. The sealing part 33 includes a sealing structure 333, a support structure 332, and a tension structure 331. The guide part 32 is connected to the sealing structure 333 through the tension structure 331. The tension structure 331 extends and retracts to synchronously drive the sealing structure 333 and the guide part 32 to move up and down along the support structure 332. The guide part 32 includes a guide structure 321 and an adjustment structure 322. The adjustment structure 322 extends and retracts to adjust the free width of the guide structure 321 to drive the guide structure 321 to move upward into the conical cavity and synchronously drive the sealing structure 333 to fold to expand the channel size that allows the endoscope tube 12 to be inserted. The self-locking part 31 is connected to the end of the guide structure 321 that is away from the tension structure 331 to synchronously move the guide structure 321 to move into the upper cavity to guide the insertion of the endoscope tube 12.

[0045] The booster 34 is connected to the guide structure 321 and adjusts its position according to the change in the width of the guide structure 321 so as to abut against the self-locking part 31 and adjust the angle of the self-locking part 31.

[0046] Reference Figure 2 , Figure 6 , Figure 7 as well as Figure 9 As shown, the number of sealing parts 33, guide parts 32, booster parts 34 and self-locking parts 31 are all multiple sets, which correspond to each other and are distributed circumferentially along the axis of the conical cavity.

[0047] In one embodiment, the sealing structure 333 includes an asymmetrically arranged lower sealing plate 3331 and an upper sealing plate, which form a fan-shaped plate structure. The lower sealing plate 3331 is fitted onto the inner wall of the double-valve rotatable sleeve 21, and adjacent lower sealing plates 3331 are fixedly connected. When the endoscope tube 12 is inserted into the irregular cavity, the lower sealing plate 3331 does not contact the outer wall of the endoscope tube 12. The upper sealing plate includes a silicone sealing strip 3332 laid along the edge of the upper sealing plate. The upper sealing plate is pressed down to seal and connect with the lower sealing plate 3331. When the upper sealing plate and the lower sealing plate 3331 are integrated, adjacent upper sealing plates are also in a close-fitting state. The arc surface of the upper sealing plate away from the lower sealing plate 3331 is connected to the endoscope tube 12 through the sealing silicone strip.

[0048] In one embodiment, the upper sealing plate includes an upper outer sealing plate 3333 and an upper inner sealing plate 3334 that are hinged together. The upper outer sealing plate 3333 is connected to the lower sealing plate 3331 through a support structure 332 and is driven by tension so that the upper outer sealing plate 3333 moves linearly upward relative to the lower sealing plate 3331 under the guidance of the support structure 332. The tension structure 331 array is assembled on the side of the upper inner sealing plate 3334 that is away from the lower sealing plate 3331.

[0049] Reference Figure 9 The support structure 332 includes a support bend 3321 connected to the lower sealing plate 3331 and two limiting pieces 3322 mounted on the support bend 3321. When the upper sealing plate is pressed down to seal and connect with the lower sealing plate 3331 to form an arc-shaped plate structure, the limiting piece 3322 at the bottom of the lower sealing plate 3331 contacts the lower sealing plate 3331 to limit the position of the lower sealing plate 3331. When the tension structure 331 drives the upper outer sealing plate 3333 to slide on the surface of the support bend 3321 through the upper inner sealing plate 3334, the limiting piece 3322 on the upper surface of the upper outer sealing plate 3333 abuts against the upper sealing plate to limit the position of the upper outer sealing plate 3333.

[0050] When the upper inner sealing plate 3334 is stretched, it flips upward and breaks away from the contact state with the upper outer sealing plate 3333. At the same time, the upper outer sealing plate 3333 moves straight up along the surface of the bending rod under the constraint of the limiting piece 3322 of the supporting bending rod 3321, so that the upper outer sealing plate 3333 separates from the lower sealing plate 3331, forming a fan-shaped expansion gap between them. At this time, the hinge of the upper inner sealing plate 3334 and the upper outer sealing plate 3333 unfolds at a certain angle, and the diameter of the sealing ring channel that was originally available for the insertion of the lens tube 12 is enlarged to form a zero-contact avoidance channel to facilitate the insertion of the lens tube 12.

[0051] When the upper inner sealing plate 3334 is compressed, the upper inner sealing plate 3334 is forced to flip downward to fit the upper outer sealing plate 3333, so as to form an integral part with the upper outer sealing plate 3333, and drive the upper outer sealing plate 3333 to press down to combine with the lower sealing plate 3331; the combined upper outer sealing plate 3333, upper inner sealing plate 3334 and lower sealing plate 3331 form a sealing ring structure, and the size of the hole through which the lens tube 12 passes in the middle of the sealing ring structure is consistent with the size of the outer wall of the lens tube 12.

[0052] When the upper inner sealing plate 3334 is compressed, the tension structure 331 contracts and applies a downward thrust, forcing the upper inner sealing plate 3334 to flip downward around the hinge point and fit tightly with the upper outer sealing plate 3333 to form a rigid whole. At the same time, the support rod 3321 guides the upper outer sealing plate 3333 to move straight down along the surface of the rod until the upper outer sealing plate 3333 contacts and is limited by the bottom limit. The contact between the upper sealing plate and the lower sealing plate 3331 gives the endoscope tube 12 a progressive compressive force. The endoscope tube 12 and the silicone sealing strip 3332 are compressed and undergo radial elastic deformation, adaptively filling the micro gap between the endoscope tube 12 and the sealing ring channel, blocking liquid leakage, and avoiding the failure of the sealing structure 333 due to continuous compression between the endoscope tube 12 and the sealing structure 333. Secondly, the movement between the upper outer sealing plate 3333 and the upper inner sealing plate 3334 corrects and locks the endoscope tube 12.

[0053] A bridge plate 334 is installed at the end of the tension structure 331 away from the upper inner sealing plate 3334, and the tension structure 331 is connected to the guide structure 321 through the bridge plate 334.

[0054] Reference Figure 2 , Figure 3 , Figure 6 as well as Figure 7 As shown, the guide structure 321 includes an inner arc action component and an outer arc action component that are interlocked with each other. The inner arc action component of the circumferentially distributed guide part 32 includes an inner arc guide plate 3211, an inner guide plate 3212 connected to the two sides of the inner arc guide plate 3211, and inner rolling balls 3217 arranged in an array along the inner arc surface of the inner arc guide plate 3211. The inner rolling balls 3217 rotate on the inner arc guide plate 3211, and the surface of the inner guide plate 3212 is provided with a guide groove 3213.

[0055] The outer arc action component includes an outer arc guide plate 3214, an outer guide plate 3215 connected to both sides of the outer arc guide plate 3214, and outer rolling balls arranged in an array along the outer arc of the outer arc guide plate 3214. The outer rolling balls are rolled and mounted on the surface of the outer arc guide plate 3214. A positioning pin 3218 is fitted at the end of the outer guide plate 3215 near the inner arc guide plate 3211. The positioning pin 3218 passes through the guide groove 3213 and is engaged in the guide groove 3213.

[0056] The outer arc guide plate 3214 is designed to be telescopic. The adjustment structure 322 adjusts the gap between the outer arc guide plate 3214 and the inner arc guide plate 3211 by its own telescopic movement, so as to drive the outer guide plates 3215 located on both sides of the outer arc guide plate 3214 to move along the length of the inner guide plate 3212 under the guidance of the positioning pin 3218. The outer arc guide plate 3214 is telescopically driven by the outer guide plates 3215 on both sides.

[0057] In one embodiment, when both the inner arc guide plate 3211 and the outer arc guide plate 3214 are in a state and the guide structure 321 is stationary relative to the lens tube 12, the inner ball bearings on the surface of the inner arc guide plate 3211 are in contact with the lens tube 12, and the outer ball bearings 3216 on the surface of the outer arc guide plate 3214 are in contact with the inner wall of the double valve rotatable sleeve 21. At this time, the sealing structure 333 is located in the lower connection cavity.

[0058] In one embodiment, the outer arc guide plate 3214 is composed of multiple hinged arc plates. Adjacent plates are linked by a sliding groove to achieve radial extension and retraction. When unfolded, each arc plate expands radially outward to increase the overall arc length. Under the drive of the adjustment structure 322, the overall arc length of the outer arc guide plate 3214 is lengthened or shortened to adapt to the guidance of the inner arc guide plate 3211.

[0059] Reference Figure 6 and Figure 9As shown. The adjustment structure 322 includes two sets of bases 3221 connected to the outer arc guide plate 3214 and the inner arc guide plate 3211 respectively, a connecting plate 3222 rotatably connected to the two sets of bases 3221, a telescopic spring 3223 and a telescopic guide rod assembled between the two connecting plates 3222. The telescopic guide rod is sleeved in the telescopic spring 3223. The telescopic spring 3223 and the telescopic guide rod extend and retract to change the gap between the inner arc guide plate 3211 and the outer arc guide plate 3214.

[0060] Specifically, the adjustment structure 322 is not vertically arranged between the inner arc guide plate 3211 and the outer arc guide plate 3214, but is inclined, so that when the bottom end of the inner arc guide plate 3211 is abutted, the outer arc guide plate 3214 pulls the inner arc guide plate 3211 to tilt at a certain angle through the adjustment structure 322.

[0061] In one embodiment, the stretching structure 331 and the adjusting structure 322 have the same construction but are located in different positions.

[0062] When the stretching structure 331 compresses the guide part 32, the self-locking part 31 and the pusher part 34 and moves upward synchronously, its guide structure 321 and adjustment structure 322 are pushed into the child conical cavity from the connecting lower cavity. As the guide part 32 moves upward, the guide cavity moves towards the expanding end of the conical cavity. The reaction force generated when the adjustment structure 322 is compressed pushes the outer arc guide plate 3214 and the inner arc guide plate 3211 to move in opposite directions. The two adjacent inner arc guide plates 3211 abut against each other to form an inverted conical channel for the lens tube 12 to be guided and passed through. The outer arc guide plate 3214 moves upward along the inclined surface inside the conical cavity through the outer ball 3216. The entire guide part 32 moves upward, which can drive the stretching structure 331 to extend.

[0063] Under the pull of the adjusting structure 322, the outer arc guide plate 3214 drives the inner arc guide plate 3211 to tilt at a certain angle, so that multiple circumferentially distributed inner arc guide plates 3211 form an inverted cone-shaped channel; the tensioning structure 331 acts so that the adjusting structure 322 is not fully extended, that is, the outer arc guide plate 3214 applies a certain pressure to the inner arc guide plate 3211 through the adjusting structure 322.

[0064] Under the guidance of the guide part 32, the upper outer sealing plate 3333 and the lower outer sealing plate form a certain angle.

[0065] Reference Figures 6-10As shown, the self-locking part 31 includes two extension rods 312 inserted into the inner arc guide plate 3211 on the side opposite to the lower sealing plate 3331. The two extension rods 312 are movably connected to the support plate 311 on the side opposite to the inner arc guide plate 3211. A horizontally arranged connecting rod 314 is assembled between the two extension rods 312. An auxiliary straightening plate 313 is rotatably connected to the connecting rod 314. The pusher part 34 pushes the auxiliary straightening plate 313 to rotate so as to fit against the surface of the lens tube 12 to lock the lens tube 12.

[0066] Specifically, because the inner arc guide plate 3211 is deflected at a certain angle, multiple circumferentially distributed extension rods form an expanded diameter channel extending from the inverted conical cavity.

[0067] Specifically, the load-bearing plate 311 tilts towards the conical surface of the conical groove under its own weight. When the handle 11 abuts against the load-bearing plate 311, it adaptively adjusts the angle to fit the bottom of the handle 11. In addition, the upper surface of the load-bearing plate 311 is arc-shaped and polished, so that there is less friction when the load-bearing plate 311 moves relative to the bottom of the handle 11.

[0068] The connecting rod 314 includes a central straight rod 3142 and two side straight rods 3141 connected to both ends of the central straight rod 3142. The two side straight rods 3141 are mounted on the extension rod 312. The auxiliary straight plate 313 is rotatably connected to the central straight rod 3142. The auxiliary straight plate 313 includes an arc-shaped bonding plate 3131, an insert plate 3132 and a triangular connecting plate 3133 connected as one piece. The side of the arc-shaped bonding plate 3131 facing away from the triangular connecting plate 3133 has an array of multiple silicone protrusions 3134.

[0069] Specifically, the booster 34 moves synchronously with the outer guide plate 3215, but always abuts against the auxiliary straightening plate 313 to prevent the auxiliary straightening plate 313 from overturning and failing to adaptively adjust its angle so as to fit the lens tube 12.

[0070] Reference Figure 8 As shown, the booster 34 includes an arc-shaped booster plate 341 and multiple inclined push plates 342 of different lengths mounted on the arc-shaped booster plate 341. The inclined surfaces of the inclined push plates 342 abut against the triangular connecting plate 3133. The arc-shaped booster plate 341 is mounted on the outer guide plate 3215. The arc-shaped booster plate 341 is configured as a telescopic plate structure, which is guided and extended by the outer guide plate 3215. The outer arc booster plate and the outer arc guide plate 3214 have similar structures to extend or retract under the action of external force.

[0071] Working principle: When the arthroscope body is inserted into the sheath body, no seal is formed between the upper sealing plate and the lower sealing plate 3331. The guide part 32 moves upward into the conical cavity of the irregular cavity, and the self-locking part 31 moves to the top of the upper cavity. The operator observes the position of the multiple self-locking parts 31 and inserts the endoscope tube 12 from the center surrounded by the multiple self-locking parts 31 into the area surrounded by the multiple inner arc guide plates 3211.

[0072] As the endoscope tube 12 is gradually inserted, the conical channel surrounded by multiple inner arc guide plates 3211 gradually narrows. The endoscope tube 12 contacts the inner arc guide plates 3211 and the inner balls on the inner arc guide plates 3211, so that the endoscope tube 12 passes through the channel formed by the multiple inner arc guide plates 3211 under the guidance of the inner arc guide plates 3211 and the inner balls. At this time, the outer arc guide plate 3214 provides a certain thrust to the inner arc guide plate 3211 through the adjustment structure 322. This thrust adjusts the position of the endoscope tube 12 so that the endoscope tube 12 is located in the axial direction of the double valve rotatable sleeve 21.

[0073] As the endoscope tube 12 continues to be inserted, the surface of its handle at the front end contacts the support plate 311. The support plate 311 is gradually straightened by the pressure of the handle at the front end. Arthroscopic surgery, as a core technology of minimally invasive orthopedic diagnosis and treatment, requires its core equipment to take into account sealing, operational flexibility, and intraoperative stability. However, traditional arthroscopic devices have significant defects: the sealing structure 333 is often set as a circular sealing ring structure, which is statically assembled in the cavity of the endoscope sheath. When the arthroscope body is inserted, the straight tube of the arthroscope body continuously rubs against the sealing ring. After long-term use, the sealing surface wears down and fluid leaks, which not only affects the clarity of the surgical field but also increases the risk of infection. Secondly, the arthroscope body needs to be inserted into the endoscope sheath. The operator needs to carefully observe the position of the cavity of the endoscope sheath to repeatedly adjust the insertion angle of the endoscope tube 12 to ensure accurate insertion of the arthroscope body. The insertion is difficult, and the straight tube of the arthroscope body is also prone to damage to the sealing ring structure during the insertion process.

[0074] Reference Figures 1-10 As shown, this is the first embodiment of the present invention, which provides an arthroscopic device, comprising:

[0075] The arthroscopy sheath body includes a double-valve rotatable sleeve 21 and a sheath tube 22 connected to the lower part of the double-valve rotatable sleeve 21. The double-valve rotatable sleeve 21 has a shaped cavity that communicates with the inner cavity of the sheath tube 22. The shaped cavity includes a connecting upper cavity, a conical cavity, and a connecting lower cavity that are connected in sequence. The connecting lower cavity is connected to the inner cavity of the sheath tube 22. The arthroscopy body includes a handle 11 and an endoscope tube 12 connected to the handle 11. The endoscope tube 12 is inserted through the connecting upper cavity, passes through the conical cavity, the connecting lower cavity, and the inner cavity of the sheath tube 22 in sequence, and extends outward from the inner cavity of the sheath tube 22. The handle 11 is fastened to the connecting upper cavity and seals the shaped cavity. The handle 11 includes a movable handle rear end and a handle front end. The handle front end is fastened to the connecting upper cavity. The handle rear end is sleeved on the surface of the handle front end and rotates along the axis of the handle front end. By rotating the handle front end, the handle 11 is fastened to the double-valve rotatable sleeve 21.

[0076] Reference Figure 1 and Figure 2 As shown, a hose 23 is also connected to the dual-valve rotatable sleeve 21 to allow liquid to be introduced or discharged through the hose 23.

[0077] The guide sealing structure includes a sealing part 33, a guide part 32, a booster part 34, and a self-locking part 31 arranged along the axial direction of the irregular cavity. The sealing part 33 includes a sealing structure 333, a support structure 332, and a tension structure 331. The guide part 32 is connected to the sealing structure 333 through the tension structure 331. The tension structure 331 extends and retracts to synchronously drive the sealing structure 333 and the guide part 32 to move up and down along the support structure 332. The guide part 32 includes a guide structure 321 and an adjustment structure 322. The adjustment structure 322 extends and retracts to adjust the free width of the guide structure 321 to drive the guide structure 321 to move upward into the conical cavity and synchronously drive the sealing structure 333 to fold to expand the channel size that allows the endoscope tube 12 to be inserted. The self-locking part 31 is connected to the end of the guide structure 321 that is away from the tension structure 331 to synchronously move the guide structure 321 to move into the upper cavity to guide the insertion of the endoscope tube 12.

[0078] The booster 34 is connected to the guide structure 321 and adjusts its position according to the change in the width of the guide structure 321 so as to abut against the self-locking part 31 and adjust the angle of the self-locking part 31.

[0079] Reference Figure 2 , Figure 6 , Figure 7 as well as Figure 9 As shown, the number of sealing parts 33, guide parts 32, booster parts 34 and self-locking parts 31 are all multiple sets, which correspond to each other and are distributed circumferentially along the axis of the conical cavity.

[0080] In one embodiment, the sealing structure 333 includes an asymmetrically arranged lower sealing plate 3331 and an upper sealing plate, which form a fan-shaped plate structure. The lower sealing plate 3331 is fitted onto the inner wall of the double-valve rotatable sleeve 21, and adjacent lower sealing plates 3331 are fixedly connected. When the endoscope tube 12 is inserted into the irregular cavity, the lower sealing plate 3331 does not contact the outer wall of the endoscope tube 12. The upper sealing plate includes a silicone sealing strip 3332 laid along the edge of the upper sealing plate. The upper sealing plate is pressed down to seal and connect with the lower sealing plate 3331. When the upper sealing plate and the lower sealing plate 3331 are integrated, adjacent upper sealing plates are also in a close-fitting state. The arc surface of the upper sealing plate away from the lower sealing plate 3331 is connected to the endoscope tube 12 through the sealing silicone strip.

[0081] In one embodiment, the upper sealing plate includes an upper outer sealing plate 3333 and an upper inner sealing plate 3334 that are hinged together. The upper outer sealing plate 3333 is connected to the lower sealing plate 3331 through a support structure 332 and is driven by tension so that the upper outer sealing plate 3333 moves linearly upward relative to the lower sealing plate 3331 under the guidance of the support structure 332. The tension structure 331 array is assembled on the side of the upper inner sealing plate 3334 that is away from the lower sealing plate 3331.

[0082] Reference Figure 9 The support structure 332 includes a support bend 3321 connected to the lower sealing plate 3331 and two limiting pieces 3322 mounted on the support bend 3321. When the upper sealing plate is pressed down to seal and connect with the lower sealing plate 3331 to form an arc-shaped plate structure, the limiting piece 3322 at the bottom of the lower sealing plate 3331 contacts the lower sealing plate 3331 to limit the position of the lower sealing plate 3331. When the tension structure 331 drives the upper outer sealing plate 3333 to slide on the surface of the support bend 3321 through the upper inner sealing plate 3334, the limiting piece 3322 on the upper surface of the upper outer sealing plate 3333 abuts against the upper sealing plate to limit the position of the upper outer sealing plate 3333.

[0083] For example, the support rod 3321 includes an elbow connected to the lower sealing plate 3331 and a straight rod connected to the elbow, the straight rod being inclined at a certain angle toward the inner wall of the double valve rotatable sleeve 21.

[0084] When the upper inner sealing plate 3334 is stretched, it flips upward and breaks away from the contact state with the upper outer sealing plate 3333. At the same time, the upper outer sealing plate 3333 moves straight up along the surface of the bending rod under the constraint of the limiting piece 3322 of the supporting bending rod 3321, so that the upper outer sealing plate 3333 separates from the lower sealing plate 3331, forming a fan-shaped expansion gap between them. At this time, the hinge of the upper inner sealing plate 3334 and the upper outer sealing plate 3333 unfolds at a certain angle, and the diameter of the sealing ring channel that was originally available for the insertion of the lens tube 12 is enlarged to form a zero-contact avoidance channel to facilitate the insertion of the lens tube 12.

[0085] When the upper inner sealing plate 3334 is compressed, the upper inner sealing plate 3334 is forced to flip downward to fit the upper outer sealing plate 3333, so as to form an integral part with the upper outer sealing plate 3333, and drive the upper outer sealing plate 3333 to press down to combine with the lower sealing plate 3331; the combined upper outer sealing plate 3333, upper inner sealing plate 3334 and lower sealing plate 3331 form a sealing ring structure, and the size of the hole through which the lens tube 12 passes in the middle of the sealing ring structure is consistent with the size of the outer wall of the lens tube 12.

[0086] When the upper inner sealing plate 3334 is compressed, the tension structure 331 contracts and applies a downward thrust, forcing the upper inner sealing plate 3334 to flip downward around the hinge point and fit tightly with the upper outer sealing plate 3333 to form a rigid whole. At the same time, the support rod 3321 guides the upper outer sealing plate 3333 to move straight down along the surface of the rod until the upper outer sealing plate 3333 contacts and is limited by the bottom limit. The contact between the upper sealing plate and the lower sealing plate 3331 gives the endoscope tube 12 a progressive compressive force. The endoscope tube 12 and the silicone sealing strip 3332 are compressed and undergo radial elastic deformation, adaptively filling the micro gap between the endoscope tube 12 and the sealing ring channel, blocking liquid leakage, and avoiding the failure of the sealing structure 333 due to continuous compression between the endoscope tube 12 and the sealing structure 333. Secondly, the movement between the upper outer sealing plate 3333 and the upper inner sealing plate 3334 corrects and locks the endoscope tube 12.

[0087] A bridge plate 334 is installed at the end of the tension structure 331 away from the upper inner sealing plate 3334, and the tension structure 331 is connected to the guide structure 321 through the bridge plate 334.

[0088] Reference Figure 2 , Figure 3 , Figure 6 as well as Figure 7As shown, the guide structure 321 includes an inner arc action component and an outer arc action component that are interlocked with each other. The inner arc action component of the circumferentially distributed guide part 32 includes an inner arc guide plate 3211, an inner guide plate 3212 connected to the two sides of the inner arc guide plate 3211, and inner rolling balls 3217 arranged in an array along the inner arc surface of the inner arc guide plate 3211. The inner rolling balls 3217 rotate on the inner arc guide plate 3211, and the surface of the inner guide plate 3212 is provided with a guide groove 3213.

[0089] The outer arc action component includes an outer arc guide plate 3214, an outer guide plate 3215 connected to both sides of the outer arc guide plate 3214, and outer rolling balls arranged in an array along the outer arc of the outer arc guide plate 3214. The outer rolling balls are rolled and mounted on the surface of the outer arc guide plate 3214. A positioning pin 3218 is fitted at the end of the outer guide plate 3215 near the inner arc guide plate 3211. The positioning pin 3218 passes through the guide groove 3213 and is engaged in the guide groove 3213.

[0090] The outer arc guide plate 3214 is designed to be telescopic. The adjustment structure 322 adjusts the gap between the outer arc guide plate 3214 and the inner arc guide plate 3211 by its own telescopic movement, so as to drive the outer guide plates 3215 located on both sides of the outer arc guide plate 3214 to move along the length of the inner guide plate 3212 under the guidance of the positioning pin 3218. The outer arc guide plate 3214 is telescopically driven by the outer guide plates 3215 on both sides.

[0091] In one embodiment, when both the inner arc guide plate 3211 and the outer arc guide plate 3214 are in a state and the guide structure 321 is stationary relative to the lens tube 12, the inner ball bearings on the surface of the inner arc guide plate 3211 are in contact with the lens tube 12, and the outer ball bearings 3216 on the surface of the outer arc guide plate 3214 are in contact with the inner wall of the double valve rotatable sleeve 21. At this time, the sealing structure 333 is located in the lower connection cavity.

[0092] In one embodiment, the outer arc guide plate 3214 is composed of multiple hinged arc plates. Adjacent plates are linked by a sliding groove to achieve radial extension and retraction. When unfolded, each arc plate expands radially outward to increase the overall arc length. Under the drive of the adjustment structure 322, the overall arc length of the outer arc guide plate 3214 is lengthened or shortened to adapt to the guidance of the inner arc guide plate 3211.

[0093] Reference Figure 6 and Figure 9As shown. The adjustment structure 322 includes two sets of bases 3221 respectively connected to the outer arc guide plate 3214 and the inner arc guide plate 3211, a connecting plate 3222 rotatably connected to the two sets of bases 3221, and a telescopic spring 3223 and a telescopic guide rod assembled between the two connecting plates 3222. The telescopic guide rod is sleeved in the telescopic spring 3223. The telescopic spring 3223 and the telescopic guide rod extend and retract to change the gap between the inner arc guide plate 3211 and the outer arc guide plate 3214.

[0094] Secondly, the telescopic guide is used for two purposes: firstly, to enable the telescopic spring 3223 to extend and retract linearly; and secondly, when the telescopic spring 3223 is compressed to its maximum extension and retraction, its outer arc guide plate 3214 and inner arc guide plate 3211 become rigidly extended and retracted to prevent the telescopic spring 3223 from undergoing plastic deformation or entanglement.

[0095] Specifically, the adjustment structure 322 is not vertically arranged between the inner arc guide plate 3211 and the outer arc guide plate 3214, but is inclined, so that when the bottom end of the inner arc guide plate 3211 is abutted, the outer arc guide plate 3214 pulls the inner arc guide plate 3211 to tilt at a certain angle through the adjustment structure 322.

[0096] In one embodiment, the stretching structure 331 and the adjusting structure 322 have the same construction but are located in different positions.

[0097] When the stretching structure 331 compresses the guide part 32, the self-locking part 31 and the pusher part 34 and moves upward synchronously, its guide structure 321 and adjustment structure 322 are pushed into the child conical cavity from the connecting lower cavity. As the guide part 32 moves upward, the guide cavity moves towards the expanding end of the conical cavity. The reaction force generated when the adjustment structure 322 is compressed pushes the outer arc guide plate 3214 and the inner arc guide plate 3211 to move in opposite directions. The two adjacent inner arc guide plates 3211 abut against each other to form an inverted conical channel for the lens tube 12 to be guided and passed through. The outer arc guide plate 3214 moves upward along the inclined surface inside the conical cavity through the outer ball 3216. The entire guide part 32 moves upward, which can drive the stretching structure 331 to extend.

[0098] Under the pull of the adjusting structure 322, the outer arc guide plate 3214 drives the inner arc guide plate 3211 to tilt at a certain angle, so that multiple circumferentially distributed inner arc guide plates 3211 form an inverted cone-shaped channel; the tensioning structure 331 acts so that the adjusting structure 322 is not fully extended, that is, the outer arc guide plate 3214 applies a certain pressure to the inner arc guide plate 3211 through the adjusting structure 322.

[0099] Under the guidance of the guide part 32, the upper outer sealing plate 3333 and the lower outer sealing plate form a certain angle.

[0100] Reference Figures 6-10As shown, the self-locking part 31 includes two extension rods 312 inserted into the inner arc guide plate 3211 on the side opposite to the lower sealing plate 3331. The two extension rods 312 are movably connected to the support plate 311 on the side opposite to the inner arc guide plate 3211. A horizontally arranged connecting rod 314 is assembled between the two extension rods 312. An auxiliary straightening plate 313 is rotatably connected to the connecting rod 314. The pusher part 34 pushes the auxiliary straightening plate 313 to rotate so as to fit against the surface of the lens tube 12 to lock the lens tube 12.

[0101] Specifically, because the inner arc guide plate 3211 is deflected at a certain angle, multiple circumferentially distributed extension rods form an expanded diameter channel extending from the inverted conical cavity.

[0102] Specifically, the load-bearing plate 311 tilts towards the conical surface of the conical groove under its own weight. When the handle 11 abuts against the load-bearing plate 311, it adaptively adjusts the angle to fit the bottom of the handle 11. In addition, the upper surface of the load-bearing plate 311 is arc-shaped and polished, so that there is less friction when the load-bearing plate 311 moves relative to the bottom of the handle 11.

[0103] The connecting rod 314 includes a central straight rod 3142 and two side straight rods 3141 connected to both ends of the central straight rod 3142. The two side straight rods 3141 are mounted on the extension rod 312. The auxiliary straight plate 313 is rotatably connected to the central straight rod 3142. The auxiliary straight plate 313 includes an arc-shaped bonding plate 3131, an insert plate 3132 and a triangular connecting plate 3133 connected as one piece. The side of the arc-shaped bonding plate 3131 facing away from the triangular connecting plate 3133 has an array of multiple silicone protrusions 3134.

[0104] Specifically, the booster 34 moves synchronously with the outer guide plate 3215, but always abuts against the auxiliary straightening plate 313 to prevent the auxiliary straightening plate 313 from overturning and failing to adaptively adjust its angle so as to fit the lens tube 12.

[0105] Reference Figure 8 As shown, the booster 34 includes an arc-shaped booster plate 341 and multiple inclined push plates 342 of different lengths mounted on the arc-shaped booster plate 341. The inclined surfaces of the inclined push plates 342 abut against the triangular connecting plate 3133. The arc-shaped booster plate 341 is mounted on the outer guide plate 3215. The arc-shaped booster plate 341 is configured as a telescopic plate structure, which is guided and extended by the outer guide plate 3215. The outer arc booster plate and the outer arc guide plate 3214 have similar structures to extend or retract under the action of external force.

[0106] Working principle: When the arthroscope body is inserted into the sheath body, no seal is formed between the upper sealing plate and the lower sealing plate 3331. The guide part 32 moves upward into the conical cavity of the irregular cavity, and the self-locking part 31 moves to the top of the upper cavity. The operator observes the position of the multiple self-locking parts 31 and inserts the endoscope tube 12 from the center surrounded by the multiple self-locking parts 31 into the area surrounded by the multiple inner arc guide plates 3211.

[0107] As the endoscope tube 12 is gradually inserted, the conical channel surrounded by multiple inner arc guide plates 3211 gradually narrows. The endoscope tube 12 contacts the inner arc guide plates 3211 and the inner balls on the inner arc guide plates 3211, so that the endoscope tube 12 passes through the channel formed by the multiple inner arc guide plates 3211 under the guidance of the inner arc guide plates 3211 and the inner balls. At this time, the outer arc guide plate 3214 provides a certain thrust to the inner arc guide plate 3211 through the adjustment structure 322. This thrust adjusts the position of the endoscope tube 12 so that the endoscope tube 12 is located in the axial direction of the double valve rotatable sleeve 21.

[0108] As the scope tube 12 continues to be inserted, the surface of the front end of the handle contacts the support plate 311. The support plate 311 adaptively adjusts its angle to fit tightly against the front end of the handle, so that the downward pressure is transmitted to the inner arc guide plate 3211 through the extension rod 312. The inner arc guide plate 3211 tilts further, and the adjustment structure 322 is compressed. The inner arc guide plate 3211 transmits force to the outer arc guide plate 3214 through the adjustment structure 322. The inner arc guide plate 3211, the outer arc guide plate 3214, and the adjustment structure 322 continue to move, and the adjustment structure 322 is further compressed. At the same time, the adjustment structure 322 exerts a reverse force on the scope tube 12, so that the angle of the scope tube 12 is further adjusted.

[0109] As the endoscope tube 12 continues to be inserted, the outer arc guide plate 3214 moves to the connection between the conical cavity and the lower cavity. Because the inner wall of the lower cavity is a vertical cylindrical structure, the outer arc guide plate 3214 stops radially contracting. Its multi-segment hinged arc plate retracts inward under the restoring force of the adjusting structure 322, and the outer rolling ball fits against the inner wall of the lower cavity, guiding the endoscope tube 12 to pass through in a straight line. At this time, the telescopic spring 3223 and the telescopic guide rod are compressed to their maximum extent.

[0110] Multiple circumferentially distributed inner arc guides form a straight cylindrical channel, the size of which is larger than the outer diameter of the endoscope tube 12. When the inner arc guide plate 3211 is straightened, it drives the endoscope tube 12 to be adjusted to the axial position of the double valve rotatable sleeve 21. At this time, the endoscope tube 12 passes through the connecting lower cavity and enters the inner cavity of the sheath tube 22. The inner rolling ball 3217 of the inner arc guide plate 3211 disengages from the endoscope tube 12, and the endoscope tube 12 extends straight along the axial direction of the sheath tube 22.

[0111] Meanwhile, as the outer arc guide plate 3214 drives the inner arc guide plate 3211 to move, its outer guide plate 3215 moves along the guide groove 3213 of the inner guide plate 3212 via the positioning pin 3218. The arc-shaped pusher plate 341 retracts, and the inclined guide plate pushes the auxiliary straightening plate 313 to adjust the position of the auxiliary straightening plate 313. The auxiliary straightening plate 313 adjusts its angle to press tightly against the outer wall of the lens tube 12. The elastic deformation of the silicone protrusion plate 3134 achieves radial clamping of the lens tube 12.

[0112] Since the inner arc guide plate 3211 is on the vertical turntable, the upper inner sealing plate 3334 and the upper outer sealing plate 3333 are integrated. As the front end of the handle continues to press down, the push part 34, the guide part 32 and the self-locking part 31 continue to move down, the tension structure 331 contracts, and the upper inner sealing plate 3334 transmits force to the upper outer sealing plate 3333 so that the upper outer sealing plate 3333 and the upper inner sealing plate 3334 move down along the support bending rod 3321 and are horizontally attached to the lower sealing plate 3331. The silicone sealing strip 3332 on the edge of the upper sealing plate is squeezed against the outer wall of the lens tube 12 and the gap is filled by radial elastic deformation to achieve sealing. At the same time, the sealing silicone strip of the upper sealing plate is pressed against the surface of the lens tube 12 to lock the lens tube 12.

[0113] The length of the stretching structure 331 is changed according to the actual insertion length of the mirror tube 12.

[0114] Of course, the above description is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the embodiments of the present invention. The present invention is also not limited to the above examples, and all equivalent changes and improvements made by those skilled in the art within the scope of the present invention should fall within the patent coverage of the present invention.

[0115] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0116] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0117] In conclusion, the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An arthroscopic device, characterized in that, The utility model relates to a kind of arthroscopy and sheath, including: The sheath body includes double valve rotatable sleeve (21) and sheath tube (22) connected to the lower part of double valve rotatable sleeve (21), the double valve rotatable sleeve (21) is formed with special-shaped cavity and is communicated with the inner cavity of sheath tube (22), and the special-shaped cavity includes connection upper cavity, taper cavity and connection lower cavity communicated in sequence; The arthroscopy body includes handle (11) and mirror tube (12) connected to handle (11), the mirror tube (12) is passed through the special-shaped cavity and extends outward through sheath tube (22), and the handle (11) is buckled and connected to the connection upper cavity and seals the special-shaped cavity; The guide sealing structure includes sealing part (33), guide part (32), boost part (34) and self-locking part (31) arranged axially along the special-shaped cavity, the sealing part (33) includes sealing structure (333), support structure (332) and stretching structure (331), the guide part (32) is connected with the sealing structure (333) by the stretching structure (331), the stretching structure (331) is stretched to drive the sealing structure (333) and the guide part (32) to move up and down along the support structure (332) synchronously, the guide part (32) includes guide structure (321) and adjusting structure (322), the adjusting structure (322) is stretched to adjust the free width of guide structure (321) to drive the guide structure (321) to move up into the taper cavity, and synchronously drive the sealing structure (333) to fold to expand the size of the channel allowing the mirror tube (12) to be inserted, the self-locking part (31) is connected to the end of guide structure (321) away from the stretching structure (331), to move into the connection upper cavity to guide the insertion of the mirror tube (12) synchronously; Wherein, the boost part (34) is connected to the guide structure (321), and adjusts its position to abut against the self-locking part (31) and adjust the angle of the self-locking part (31) following the change of the width of the guide structure (321) itself; The number of the sealing part (33), the guide part (32), the boost part (34) and the self-locking part (31) is multiple groups, which correspond to each other and are distributed axially and circumferentially along the taper cavity;The guide structure (321) includes inner arc acting assembly and outer arc acting assembly connected with each other, the inner arc acting assembly includes inner arc guide plate (3211), inner side guide plate (3212) connected to the two side faces of the inner arc guide plate (3211), and inner rolling ball (3217) arrayed along the inner arc surface of the inner arc guide plate (3211), the inner rolling ball (3217) is rotatably arranged on the inner arc guide plate (3211), and the surface of the inner side guide plate (3212) penetrates guide groove (3213). The outer-arc assembly comprises an outer-arc guide plate (3214), outer side guide plates (3215) connected to both sides of the outer-arc guide plate (3214), and outer rolling balls arranged in an array along the outer arc of the outer-arc guide plate (3214), the end of the outer side guide plate (3215) close to the inner-arc guide plate (3211) is equipped with a positioning pin (3218) which penetrates and engages in the guide groove (3213); The outer-arc guide plate (3214) is arranged in a telescopic structure, the adjusting structure (322) adjusts the gap between the outer-arc guide plate (3214) and the inner-arc guide plate (3211) by telescoping itself, so as to drive the outer side guide plates (3215) on both sides of the outer-arc guide plate (3214) to move along the length direction of the inner side guide plate (3212) under the guidance of the positioning pin (3218), and the outer-arc guide plate (3214) is telescoped by the driving of the outer side guide plates (3215) on both sides; The adjusting structure (322) comprises two groups of bases (3221) connected to the outer-arc guide plate (3214) and the inner-arc guide plate (3211) respectively, a connecting plate (3222) rotatably connected to the two groups of bases (3221), and a telescopic spring (3223) and a telescopic guide rod assembled between the two connecting plates (3222), the telescopic guide rod is sleeved in the telescopic spring (3223), and the gap between the inner-arc guide plate (3211) and the outer-arc guide plate (3214) is changed by the telescoping of the telescopic spring (3223) and the telescopic guide rod; The sealing structure (333) comprises asymmetrically arranged lower and upper sealing plates, the lower and upper sealing plates form a fan-shaped plate structure, the lower sealing plate (3331) is assembled in the inner wall of the double-valve rotatable sleeve (21), the upper sealing plate comprises a silica gel sealing strip (3332) laid along the edge of the upper sealing plate, and the upper sealing plate is pressed downward to be sealingly connected with the lower sealing plate (3331) The upper sealing plate comprises an upper outer sealing plate (3333) and an upper inner sealing plate (3334) hingedly connected, the upper outer sealing plate (3333) is connected with the lower sealing plate (3331) through the support structure (332) and is driven by tension to move linearly upward relative to the lower sealing plate (3331) under the guidance of the support structure (332), and the stretching structure (331) is arranged on the side of the upper inner sealing plate (3334) away from the lower sealing plate (3331); The self-locking part (31) comprises two elongated rods (312) inserted into the inner-arc guide plate (3211) away from the lower sealing plate (3331), the surface of the two elongated rods (312) away from the inner-arc guide plate (3211) is movably connected with a force bearing plate (311), a connecting rod (314) horizontally arranged is assembled between the two elongated rods (312), the connecting rod (314) is rotatably connected with an auxiliary right plate (313), the boosting part (34) pushes the auxiliary right plate (313) to rotate to adhere to the surface of the mirror tube (12) to lock the mirror tube (12); The connecting rod (314) comprises a center straight rod (3142) and side straight rods (3141) connected to both ends of the center straight rod (3142), the two side straight rods (3141) are assembled on the elongated rods (312), and the auxiliary right plate (313) is rotatably connected to the center straight rod (3142); The auxiliary right plate (313) comprises an arc-shaped adhering plate (3131), a penetrating plate (3132) and a triangular connecting plate (3133) connected as a whole, and a plurality of silica gel convex plates (3134) are arranged on the surface of the arc-shaped adhering plate (3131) away from the triangular connecting plate (3133); The boosting part (34) comprises an arc-shaped boosting plate (341) and a plurality of inclined pushing plates (342) with different lengths assembled on the arc-shaped boosting plate (341), the inclined surface of the inclined pushing plate (342) abuts against the triangular connecting plate (3133), and the arc-shaped boosting plate (341) is assembled on the outer guide plate (3215); The arc-shaped boosting plate (341) is arranged in an accordion plate structure and is guided to stretch and retract through the outer guide plate (3215).

2. The arthroscopic device of claim 1, wherein: The handle (11) comprises a handle rear end part and a handle front end part movably connected, and the handle front end part is buckled on the connection upper cavity.

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