Arthroscope device

Abstract

The invention discloses an arthroscope device, which relates to the technical field of arthroscopes and comprises an arthroscope sheath body, an arthroscope body and a guide sealing structure, wherein the guide sealing structure comprises a sealing part, a guide part, a boosting part and a self-locking part which are arranged in the axial direction of the special-shaped cavity, the sealing part comprises a sealing structure, a supporting structure and a stretching structure, and the sealing part of the guide sealing structure cooperates with the stretching structure, so that folding avoiding of the sealing structure is achieved when the endoscope tube is inserted; continuous frictional wear of a traditional sealing ring is avoided, the sealing performance is remarkably improved, the service life is remarkably prolonged, and the liquid leakage risk is reduced; the adjusting structure of the guiding part drives the guiding structure to form the self-adaptive inverted-cone-shaped channel in the conical cavity, radial locking of the arthroscope tube is achieved in combination with the self-locking part, rapid and accurate insertion is achieved, and the difficulty and risk of operating the arthroscope body to be inserted by an operator are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of arthroscopy, in particular to an arthroscopic device. BACKGROUND

[0002] In the field of modern minimally invasive surgery, arthroscopic surgery is widely used due to its advantages of small trauma and rapid recovery. The rationality of the structural design and the convenience of the operation of the arthroscopic device, as the core instrument of such surgery, directly affect the surgical effect.

[0003] A kind of arthroscopic device is disclosed in Chinese patent with authorization announcement No.CN119257536B, comprising handle, installation rod is installed on the handle, mirror rod is installed on the installation rod, detection lens is installed on the end of mirror rod away from handle, transparent plate is installed on the end of mirror rod on which detection lens is installed, the transparent plate seals the end of mirror rod on which detection lens is located, the electrical signal of detection lens is transmitted to the circuit board in handle by cable, the electrical signal on the circuit board is transmitted to the outside through the cable at the end of handle for display.

[0004] The sealing structure of traditional arthroscopic device adopts static annular sealing ring. When arthroscopic is inserted, the mirror tube continuously rubs against the sealing ring, which causes the sealing surface to wear out, leading to liquid leakage, affecting the clarity of surgical field and increasing the risk of infection. Secondly, the mirror tube needs to be repeatedly adjusted in angle to align with the inner cavity of the sheath to avoid damage caused by collision with the sealing ring structure, which requires high technical requirements for the operator and increases the complexity of the surgery.

[0005] Therefore, the present application provides an arthroscopic device to solve the above problems. SUMMARY

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

[0007] To solve the above technical problems, the present application provides the following technical solutions: an arthroscopic device, comprising:

[0008] A sheath body comprising a double-valve rotatable sleeve and a sheath tube connected to the lower part of the double-valve rotatable sleeve, a special-shaped cavity is formed in the double-valve rotatable sleeve and communicates with the inner cavity of the sheath tube, the special-shaped cavity comprises a connecting upper cavity, a tapered cavity and a connecting lower cavity which are sequentially communicated;

[0009] An arthroscopic body comprising a handle and a mirror tube connected to the handle, the mirror tube passes through the sheath tube via the special-shaped cavity and extends outward, and the handle is snap-fitted and connected to the connecting upper cavity and seals the special-shaped cavity;

[0010] A guide sealing structure includes a sealing portion, a guide portion, a boosting portion, and a self-locking portion arranged axially along the special-shaped cavity. The sealing portion includes a sealing structure, a support structure, and a tensile structure. The guide portion is connected to the sealing structure via the tensile structure. The tensile structure synchronously drives the sealing structure and the guide portion to move up and down along the support structure by itself. The guide portion includes a guide structure and an adjustment structure. The adjustment structure adjusts the width of the guide structure by itself to drive the guide structure upward into the tapered cavity and synchronously drive the sealing structure to fold to expand the size of the channel allowing the mirror tube to be inserted. The self-locking portion is connected to the end of the guide structure away from the tensile structure to synchronize the movement of the guide structure to move into the connected upper cavity to guide the mirror tube for insertion.

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

[0012] As a preferred embodiment of the arthroscopic device of the present invention, the sealing portion, the guide portion, the boosting portion, and the self-locking portion are each provided in a plurality of groups, corresponding to each other, and distributed circumferentially along the axial direction of the tapered cavity; the guide structure includes an inner arc action component and an outer arc action component that are engaged with each other, the inner arc action component including an inner arc guide plate, inner guide plates connected to both side surfaces of the inner arc guide plate, and inner rolling balls distributed 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 a guide groove being formed through the surface of the inner guide plate;

[0013] The outer arc action component includes an outer arc guide plate, outer guide plates connected to the two side surfaces of the outer arc guide plate, and outer rolling balls distributed in an array along the outer arc of the outer arc guide plate. The end of the outer guide plate close to the inner arc guide plate is equipped with a positioning pin, and the positioning pin passes through the guide groove and is engaged in the guide groove.

[0014] As a preferred embodiment of the arthroscopic device described in the present invention, the outer arc guide plate is arranged in a telescopic structure, and the adjustment structure adjusts the gap between the outer arc guide plate and the inner arc guide plate by itself expansion and contraction, 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 pins, and the outer arc guide plates driven by the outer guide plates on both sides expand and contract.

[0015] As a preferred embodiment of the arthroscopic device of the present invention, the adjustment structure includes two groups of bases respectively connected to the outer arc guide plate and the inner arc guide plate, a connecting plate rotatably connected to the two groups 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 telescopic spring and the telescopic guide rod are telescoped to push the gap between the inner arc guide plate and the outer arc guide plate to change.

[0016] As a preferred scheme of the arthroscope device, the sealing structure comprises asymmetrically arranged lower and upper sealing plates, the lower and upper sealing plates form a fan-shaped plate structure, the lower sealing plate is assembled on the inner wall of the double-valve rotatable sleeve, the upper sealing plate comprises a silica gel sealing strip laid along the edge of the upper sealing plate, and the upper sealing plate is pressed to be sealingly connected with the lower sealing plate.

[0017] As a preferred scheme of the arthroscope device, the upper sealing plate comprises a hingedly connected upper outer sealing plate and an upper inner sealing plate, the upper outer sealing plate is connected with the lower sealing plate through a support structure and is driven by tension to be linearly moved upward relative to the lower sealing plate under the guidance of the support structure, and the array of the stretching structure is assembled on the side of the upper inner sealing plate away from the lower sealing plate.

[0018] As a preferred scheme of the arthroscope device, the self-locking part comprises two elongated rods inserted on the side of the inner arc guide plate away from the lower sealing plate, a force bearing plate is movably connected to the side of the two elongated rods away from the inner arc guide plate, a connecting rod arranged in a horizontal manner is assembled between the two elongated rods, an auxiliary alignment plate is rotatably connected to the connecting rod, and the boosting part drives the auxiliary alignment plate to rotate to be attached to the surface of the sleeve to lock the sleeve.

[0019] As a preferred scheme of the arthroscope device, the connecting rod comprises a central straight rod and side straight rods connected to the two ends of the central straight rod, the two side straight rods are assembled on the elongated rods, and the auxiliary alignment plate is rotatably connected to the central straight rod.

[0020] The auxiliary alignment plate comprises an arc-shaped attachment plate, a penetrating plate and a triangular connection plate which are connected in one body, and the side of the arc-shaped attachment plate away from the triangular connection plate is arrayed with a plurality of silica gel convex plates.

[0021] As a preferred scheme of the arthroscope device, the boosting part comprises an arc-shaped boosting plate and a plurality of inclined pushing plates with different lengths assembled on the arc-shaped boosting plate, the inclined surface of the inclined pushing plate abuts on the triangular connection plate, and the arc-shaped boosting plate is assembled on the outer guide plate.

[0022] The arc-shaped boosting plate is arranged in a telescopic plate body structure and is guided to be telescoped through the outer guide plate.

[0023] As a preferred scheme of the arthroscope device, the handle comprises movably connected handle rear and front end parts, and the handle front end part is snap-fit connected to the upper cavity.

[0024] The beneficial effects of the present application are as follows: the sealing part of the guide sealing structure cooperates with the stretching structure to realize the folding avoidance of the sealing structure during the insertion of the mirror tube, avoid the continuous friction and wear of the traditional sealing ring, significantly improve the sealing performance and service life, and reduce the risk of liquid leakage; the adjusting structure of the guide part drives the guide structure to form a self-adaptive inverted conical channel in the conical cavity, and combines with the self-locking part to realize the radial locking of the mirror tube, realize the rapid and accurate insertion, reduce the difficulty and risk of the operator operating the arthroscope body insertion; in addition, the boost part dynamically adjusts the position with the change of the guide structure width, and links the self-locking part angle to ensure that the mirror tube is always inserted along the axial direction, and ensure the accuracy of the mirror tube insertion. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 It is the overall structure diagram of the arthroscope device in the present application.

[0027] Figure 2 It is the structure detail diagram of the handle in the present application.

[0028] Figure 3 It is the overall structure diagram of the guide sealing structure in the present application.

[0029] Figure 4 It is the overall structure isometric drawing of the guide sealing structure in the present application.

[0030] Figure 5 It is the structure detail diagram of the sealing structure in the present application.

[0031] Figure 6 It is the structure detail diagram of the guide structure in the present application.

[0032] Figure 7 It is the structure detail diagram of the self-locking part in the present application.

[0033] Figure 8 It is the A part structure of the present application. Figure 7

[0034] Figure 9 It is the structure detail diagram of the inner arc guide plate in the present application.

[0035] Figure 10 It is the structure detail diagram of the outer arc guide plate in the present application.

[0036] ​Explanation of reference signs: 11, handle; 12, mirror tube; 21, double-valve rotatable sleeve; 22, sheath tube; 23, hose; 31, self-locking part; 311, force bearing plate; 312, elongated rod; 313, auxiliary right plate; 3131, arc-shaped fitting plate; 3132, penetrating plate; 3133, triangular connecting plate; 3134, silica gel convex plate; 314, connecting rod; 3141, side straight rod; 3142, center straight rod; 32, guiding part; 321, guiding structure; 3211, inner arc guide plate; 3212, inner side guiding plate; 3213, guiding groove; 3214, outer arc guide plate; 3215, outer side guiding plate; 3216, outer ball; 3217, inner ball; 3218, positioning pin; 322, adjusting structure; 3221, base; 3222, connecting plate; 3223, telescopic spring; 33, sealing part; 331, stretching structure; 332, supporting structure; 3321, supporting bent rod; 3322, limiting sheet; 333, sealing structure; 3331, lower sealing plate; 3332, silica gel sealing strip; 3333, upper outer sealing plate; 3334, upper inner sealing plate; 334, bridge plate; 34, boosting part; 341, arc-shaped boosting plate; 342, oblique pushing plate. DETAILED DESCRIPTION

[0037] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0038] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details given herein, that the present application can be practiced with other than the described embodiments and that variations from the particular embodiments described herein can be made and still be within the scope of the present application.

[0039] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. The "in one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent of or selectively exclusive of other embodiments.

[0040] As a core technology of minimally invasive orthopedic diagnosis and treatment, the core equipment of arthroscopic surgery needs to consider sealing, operation flexibility and intraoperative stability. However, the traditional arthroscopic device has the following defects: the sealing structure 333 is often set as a circular sealing ring structure, which is statically assembled in the inner cavity of the sheath body. When the arthroscope body is inserted, the straight pipe part of the arthroscope body continuously rubs with the sealing ring. After long-term use, the sealing surface is worn and the liquid 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 sheath body, and the operator needs to carefully observe the position of the inner cavity of the sheath body to repeatedly adjust the insertion angle of the mirror tube 12 to ensure the accurate insertion of the arthroscope body. The insertion is difficult, and the straight pipe part of the arthroscope body is also easy to damage the sealing ring structure during the insertion process.

[0041] Referring to Figures 1-10 The first embodiment of the present application provides an arthroscopic device, which comprises:

[0042] The sheath body comprises 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 forms a special-shaped cavity therein and is in communication with the inner cavity of the sheath tube 22. The special-shaped cavity comprises a connecting upper cavity, a tapered cavity and a connecting lower cavity which are sequentially communicated. The connecting lower cavity is in communication with the inner cavity of the sheath tube 22. The arthroscope body comprises a handle 11 and a mirror tube 12 connected to the handle 11. The mirror tube 12 is inserted from the connecting upper cavity, sequentially passes through the tapered cavity, the connecting lower cavity and the inner cavity of the sheath tube 22, and extends outward from the inner cavity of the sheath tube 22. The handle 11 is connected to the connecting upper cavity and seals the special-shaped cavity. The handle 11 comprises a movable handle rear end part and a handle front end part. The handle front end part is connected to the connecting upper cavity, and the handle rear end part is sleeved on the surface of the handle front end part and rotates along the axis of the handle front end part. By rotating the handle front end part, the handle 11 is connected to the double-valve rotatable sleeve 21.

[0043] Referring to Figure 1 and Figure 2 The double-valve rotatable sleeve 21 is also connected to a hose 23 to introduce or discharge liquid through the hose 23.

[0044] The guide sealing structure includes a sealing portion 33, a guide portion 32, a boosting portion 34 and a self-locking portion 31 arranged along the axial direction of the special-shaped cavity. The sealing portion 33 includes a sealing structure 333, a support structure 332 and a tensile structure 331. The guide portion 32 is connected to the sealing structure 333 through the tensile structure 331. The tensile structure 331 synchronously drives the sealing structure 333 and the guide portion 32 to move up and down along the support structure 332 by itself. The guide portion 32 includes a guide structure 321 and an adjustment structure 322. The adjustment structure 322 adjusts the free width of the guide structure 321 by itself, so as to drive the guide structure 321 to move upward into the tapered 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 portion 31 is connected to the end of the guide structure 321 away from the tensile structure 331 to synchronize the movement of the guide structure 321 to move into the connected upper cavity to guide the mirror tube 12 for insertion.

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

[0046] Reference Figure 2 、 Figure 6 、 Figure 7 as well as Figure 9 As shown, the sealing portion 33 , the guiding portion 32 , the boosting portion 34 and the self-locking portion 31 are provided in multiple groups, which correspond to each other and are distributed axially and circumferentially along the tapered cavity.

[0047] In one embodiment, the sealing structure 333 includes an asymmetrically arranged lower sealing plate 3331 and an upper sealing plate. The lower sealing plate 3331 and the upper sealing plate form a fan-shaped plate structure. The lower sealing plate 3331 is assembled on the inner wall of the double-valve rotatable sleeve 21, and adjacent lower sealing plates 3331 are fixedly connected. When the mirror tube 12 is inserted into the special-shaped cavity, and the lower sealing plate 3331 does not contact the outer wall of the mirror 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 be sealed and connected to the lower sealing plate 3331. When the upper sealing plate and the lower sealing plate 3331 are integrated into one, the adjacent upper sealing plates are also in a state of close contact with each other, and the arc surface of the upper sealing plate away from the lower sealing plate 3331 is connected to the mirror 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 to each other. 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 under the guidance of the support structure 332, the upper outer sealing plate 3333 moves upward in a straight line relative to the lower sealing plate 3331. The tensile structure 331 array is assembled on the side of the upper inner sealing plate 3334 facing away from the lower sealing plate 3331.

[0049] Referring to Figure 9 The support structure 332 includes a support bent rod 3321 connected to the lower sealing plate 3331, two limiting pieces 3322 assembled on the support bent rod 3321, when the upper sealing plate is pressed downward to be connected with the lower sealing plate 3331 to form an arc-shaped plate structure, the limiting piece 3322 located at the bottom of the lower sealing plate 3331 is in contact with the lower sealing plate 3331 to limit the position of the lower sealing plate 3331, when the stretching structure 331 drives the upper outer sealing plate 3333 to slide on the surface of the support bent rod 3321 through the upper inner sealing plate 3334, the limiting piece 3322 located on the upper surface of the upper outer sealing plate 3333 is in contact with the upper inner sealing plate to limit the position of the upper outer sealing plate 3333.

[0050] When the upper inner sealing plate 3334 is pulled, the upper inner sealing plate 3334 is turned upward to be separated from the upper outer sealing plate 3333, at the same time, the upper outer sealing plate 3333 is linearly moved upward along the surface of the support bent rod 3321 under the constraint of the limiting piece 3322 of the support bent rod 3321, so that the upper outer sealing plate 3333 is separated from the lower sealing plate 3331, and a fan-shaped expansion gap is formed between the two; at this time, the hinge joint between the upper inner sealing plate 3334 and the upper outer sealing plate 3333 is unfolded by a certain angle, the diameter of the sealing ring hole which can be used for inserting the mirror tube 12 is expanded, and a zero-contact avoiding channel is formed to facilitate the insertion of the mirror tube 12.

[0051] When the upper inner sealing plate 3334 is pressed, the upper inner sealing plate 3334 is turned downward under the force to be attached to the upper outer sealing plate 3333 to form an integrated body with the upper outer sealing plate 3333, and the upper outer sealing plate 3333 is pressed downward to be integrated with the lower sealing plate 3331; the integrated upper outer sealing plate 3333, the upper inner sealing plate 3334 and the lower sealing plate 3331 form a sealing ring structure, and the size of the hole in the middle of the sealing ring structure for allowing the mirror tube 12 to pass through is consistent with the size of the outer wall of the mirror tube 12.

[0052] When the upper inner sealing plate 3334 is pressed, the stretching structure 331 is contracted and downward pushing force is applied, so that the upper inner sealing plate 3334 is turned downward around the hinge joint to be closely attached to the upper outer sealing plate 3333 to form a rigid integrated body; at the same time, the support bent rod 3321 guides the upper outer sealing plate 3333 to linearly move downward along the surface of the bent rod until the upper outer sealing plate 3333 is in contact with the limiting piece at the bottom; the contact between the upper sealing plate and the lower sealing plate 3331 gives the mirror tube 12 a progressive extrusion force, the mirror tube 12 and the silica gel sealing strip 3332 are extruded to be elastically deformed in the radial direction, and the micro gap between the mirror tube 12 and the sealing ring hole is filled to block the liquid leakage, which avoids the continuous extrusion of the mirror tube 12 and the sealing structure 333 to cause the failure of the sealing structure 333, and secondly, the movement between the upper outer sealing plate 3333 and the upper inner sealing plate 3334 locks the mirror tube 12.

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

[0054] Referring to Figure 2 , Figure 3 , Figure 6 and Figure 7 , the guide structure 321 includes an inner arc acting assembly and an outer arc acting assembly connected to each other. The inner arc acting assembly includes an inner arc guide plate 3211, inner side guide plates 3212 connected to the two side surfaces 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 side guide plate 3212 penetrates a guide groove 3213.

[0055] The outer arc acting assembly includes an outer arc guide plate 3214, outer side guide plates 3215 connected to the two side surfaces of the outer arc guide plate 3214, and outer rolling balls arranged in an array along the outer arc surface of the outer arc guide plate 3214. The outer rolling balls are rotatably installed on the surface 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 provided with a positioning pin 3218, which penetrates the guide groove 3213 and is clamped in the guide groove 3213.

[0056] The outer arc guide plate 3214 is arranged in an extendable structure. The adjusting structure 322 adjusts the gap between the outer arc guide plate 3214 and the inner arc guide plate 3211 by extending or retracting 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 of the inner side guide plate 3212 under the guidance of the positioning pin 3218, and the outer arc guide plate 3214 extends or retracts under the drive of the two outer side guide plates 3215.

[0057] In an embodiment, when the inner arc guide plate 3211 and the outer arc guide plate 3214 are both in a state and the guide structure 321 is stationary relative to the mirror tube 12, the inner rolling balls on the surface of the inner arc guide plate 3211 are in contact with the mirror tube 12, and the outer rolling balls 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 connection lower cavity.

[0058] In an embodiment, the outer arc guide plate 3214 is composed of multiple arc-shaped plates hinged together. The adjacent plate bodies are connected through clamping sliding grooves to realize radial extension linkage. When unfolded, each segment of the arc-shaped plate expands radially outward to increase the overall arc length, so that under the drive of the adjusting structure 322, the overall arc length of the outer arc guide plate 3214 is extended or shortened to adapt to the guidance of the inner arc guide plate 3211.

[0059] Referring to Figure 6 and Figure 9The adjusting structure 322 is disposed between the inner arc guide plate 3211 and the outer arc guide plate 3214, and is not perpendicular to 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 be inclined at a certain angle by the adjusting structure 322.

[0060] Specifically, the adjusting structure 322 is not disposed perpendicularly between the inner arc guide plate 3211 and the outer arc guide plate 3214, but is disposed obliquely, 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 be inclined at a certain angle by the adjusting structure 322.

[0061] In an embodiment, the stretching structure 331 and the adjusting structure 322 are of the same structure, but are distributed differently.

[0062] When the stretching structure 331 is extruded to move upward synchronously with the guide part 32, the self-locking part 31 and the boosting part 34, the guide structure 321 and the adjusting structure 322 are pushed into the inner part of the conical cavity from the connecting lower cavity. With the upward movement of the guide part 32, the guide cavity moves to the expanding end of the conical cavity. The reaction force generated by the compression of the adjusting structure 322 pushes the outer arc guide plate 3214 and the inner arc guide plate 3211 to move relatively and oppositely. The adjacent two inner arc guide plates 3211 abut each other to form an inverted conical passage for guiding and passing the scope 12. The outer arc guide plate 3214 moves upward along the inclined surface in the conical cavity through the outer ball 3216. The entire guide part 32 moves upward, which drives the stretching structure 331 to elongate.

[0063] Among them, the outer arc guide plate 3214 is pulled by the adjusting structure 322 to drive the inner arc guide plate 3211 to be inclined at a certain angle, so that the plurality of circumferentially distributed inner arc guide plates 3211 form an inverted conical passage; the stretching structure 331 acts, and the adjusting structure 322 is not fully stretched, that is, the outer arc guide plate 3214 gives the inner arc guide plate 3211 a certain pressure through the adjusting structure 322.

[0064] Among them, 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] Referring to Figures 6-10As shown, the self-locking part 31 comprises two elongated rods 312 inserted on the inner arc guide plate 3211 away from the lower sealing plate 3331, the two elongated rods 312 are movably connected with the force bearing plate 311 away from the inner arc guide plate 3211, a connecting rod 314 horizontally assembled between the two elongated rods 312, the auxiliary normal plate 313 is rotatably connected on the connecting rod 314, the auxiliary normal plate 313 is pushed to rotate by the boosting part 34 to adhere to the surface of the mirror tube 12 to lock the mirror tube 12.

[0066] Specifically, the inner arc guide plate 3211 is deflected at a certain angle, so that the plurality of circumferentially distributed extension rods form a diameter expanding channel extended by the inverted conical cavity.

[0067] Specifically, the force bearing plate 311 is inclined to the taper surface of the taper groove under its own gravity, and when the handle 11 abuts on the force bearing plate 311, it is adaptively adjusted to adhere to the bottom of the handle 11. In addition, the upper surface of the force bearing plate 311 is arc-shaped and polished, so that when the force bearing plate 311 moves relative to the lower surface of the handle 11, the friction is small.

[0068] The connecting rod 314 comprises a central straight rod 3142 and side straight rods 3141 connected to both ends of the central straight rod 3142, the two side straight rods 3141 are assembled on the elongated rods 312, and the auxiliary normal plate 313 is rotatably connected to the central straight rod 3142; the auxiliary normal plate 313 comprises an arc-shaped adhering plate 3131, a penetrating plate 3132 and a triangular connecting plate 3133 connected as one body, and the arc-shaped adhering plate 3131 is arrayed with a plurality of silica gel convex plates 3134 away from the triangular connecting plate 3133.

[0069] Specifically, the boosting part 34 moves synchronously with the outer side guide plate 3215, but always abuts on the auxiliary normal plate 313 to prevent the auxiliary normal plate 313 from being excessively turned over and unable to adaptively adjust the angle to adhere to the mirror tube 12.

[0070] Referring to Figure 8 As shown, the boosting part 34 comprises an arc-shaped boosting plate 341 and a plurality of inclined push plates 342 of different lengths assembled on the arc-shaped boosting plate 341, the inclined surface of the inclined push plate 342 abuts on the triangular connecting plate 3133, and the arc-shaped boosting plate 341 is assembled on the outer side guide plate 3215; the arc-shaped boosting plate 341 is provided in an extension plate structure and is guided to extend or contract by the outer side guide plate 3215; wherein the outer arc boosting plate and the outer arc guide plate 3214 are similar structures.

[0071] Working principle: when the arthroscope body begins to insert into the mirror sheath body, no seal is formed between the upper and lower sealing plates 3331, the guide part 32 is moved upward to the tapered cavity of the special-shaped cavity, the self-locking part 31 is moved to the top of the upper cavity, the operator observes the position of the plurality of self-locking parts 31, and the mirror tube 12 is inserted into the range surrounded by the plurality of inner arc guide plates 3211 from the center surrounded by the plurality of self-locking parts 31.

[0072] During the gradual insertion of the mirror tube 12, the tapered passage surrounded by the plurality of inner arc guide plates 3211 gradually shrinks in diameter, the mirror tube 12 contacts the inner arc guide plate 3211 and contacts the inner ball on the inner arc guide plate 3211, so that the inner arc guide plate 3211 and the inner ball of the mirror tube 12 are guided to pass through the passage formed by the plurality of inner arc guide plates 3211, at this time, since the outer arc guide plate 3214 gives the inner arc guide plate 3211 a certain thrust through the adjusting structure 322, the position of the mirror tube 12 is adjusted so that the mirror tube 12 is located in the axial direction of the double-valve rotatable sleeve 21.

[0073] With the continuous insertion of the mirror tube 12, the surface of the handle front end part contacts the bearing plate 311, the bearing plate 311 is gradually adjusted in angle by being extruded by the handle front end part, the arthroscope surgery is the core technology of minimally invasive orthopedic diagnosis and treatment, and the core equipment needs to consider sealing, operation flexibility and intraoperative stability, but the traditional arthroscope device has the following defects: the sealing structure 333 is often set as a circular sealing ring structure, which is statically assembled in the inner cavity of the mirror sheath body, when the arthroscope body is inserted, the straight pipe part of the arthroscope body continuously rubs with the sealing ring, and after long-term use, the sealing surface is worn and liquid 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 mirror sheath body, and the original needs to carefully observe the position of the inner cavity of the mirror sheath body to repeatedly adjust the insertion angle of the mirror tube 12 to ensure the accurate insertion of the arthroscope body, which is difficult to insert, and the straight pipe part of the arthroscope body is also easy to damage the sealing ring structure during the insertion process.

[0074] Referring to Figures 1-10 The first embodiment of the present application provides an arthroscope device, which comprises:

[0075] The mirror sheath body comprises a double-valve rotatable sleeve 21 and a sheath tube 22 connected to the lower part of the double-valve rotatable sleeve 21, a special-shaped cavity is formed in the double-valve rotatable sleeve 21 and communicates with the inner cavity of the sheath tube 22, the special-shaped cavity comprises a connecting upper cavity, a tapered cavity and a connecting lower cavity which are communicated in sequence, and the connecting lower cavity communicates with the inner cavity of the sheath tube 22; the arthroscope body comprises a handle 11 and a mirror tube 12 connected to the handle 11, the mirror tube 12 is inserted into the connecting upper cavity, sequentially passes through the tapered cavity, the connecting lower cavity and the inner cavity of the sheath tube 22, and extends outwards from the inner cavity of the sheath tube 22; wherein the handle 11 is buckled and connected to the connecting upper cavity and seals the special-shaped cavity, the handle 11 comprises a handle rear end part and a handle front end part which are movably connected, the handle front end part is buckled and connected to the connecting upper cavity, and the handle rear end part is sleeved on the surface of the handle front end part and rotates along the axis of the handle front end part, and the handle 11 is buckled and connected to the double-valve rotatable sleeve 21 by rotating the handle front end part.

[0076] Referring to Figure 1 and Figure 2 , a hose 23 is further connected to the double-valve rotatable sleeve 21 to guide the liquid in or out through the hose 23.

[0077] The guide sealing structure comprises a sealing part 33, a guide part 32, a boosting part 34 and a self-locking part 31 which are arranged axially along the special-shaped cavity, the sealing part 33 comprises a sealing structure 333, a supporting structure 332 and a stretching structure 331, the guide part 32 is connected to the sealing structure 333 through the stretching structure 331, the stretching structure 331 synchronously drives the sealing structure 333 and the guide part 32 to move up and down along the supporting structure 332 by stretching itself, the guide part 32 comprises a guide structure 321 and an adjusting structure 322, the adjusting structure 322 adjusts the free width of the guide structure 321 by stretching itself to drive the guide structure 321 to move upwards into the tapered cavity and synchronously drive the sealing structure 333 to fold to expand the size of the passage allowing the mirror tube 12 to be inserted, and the self-locking part 31 is connected to one end of the guide structure 321 away from the stretching structure 331 to synchronously drive the guide structure 321 to move into the connecting upper cavity to guide the mirror tube 12 to be inserted;

[0078] The boosting part 34 is connected to the guide structure 321 and adjusts its own position by following the change of the width of the guide structure 321 to abut against the self-locking part 31 and adjust the angle of the self-locking part 31.

[0079] Referring to Figure 2 , Figure 6 , Figure 7 and Figure 9 , the number of the sealing part 33, the guide part 32, the boosting part 34 and the self-locking part 31 is multiple groups, which correspond to each other and are distributed axially and circumferentially along the tapered cavity.

[0080] In an embodiment, the sealing structure 333 comprises asymmetrically arranged lower sealing plates 3331 and upper sealing plates, the lower sealing plates 3331 and the upper sealing plates form a sector plate structure, the lower sealing plates 3331 are assembled on the inner wall of the double valve rotatable sleeve 21, and are fixedly connected between adjacent lower sealing plates 3331, when the mirror tube 12 is inserted into the special-shaped cavity, and the lower sealing plates 3331 are not in contact with the outer wall of the mirror tube 12, the upper sealing plates comprise a silica gel sealing strip 3332 laid along the edge of the upper sealing plate, the upper sealing plate is pressed down to be sealingly connected with the lower sealing plate 3331, when the upper sealing plate and the lower sealing plate 3331 are integrated, the adjacent upper sealing plates are also in close contact with each other, and the arc surface of the upper sealing plate away from the lower sealing plate 3331 is connected with the mirror tube 12 through the sealing silica gel strip.

[0081] In an embodiment, the upper sealing plate comprises a hingedly connected upper outer sealing plate 3333 and an upper inner sealing plate 3334, 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 array of the stretching structure 331 is assembled on the side of the upper inner sealing plate 3334 away from the lower sealing plate 3331.

[0082] With reference to Figure 9 , the support structure 332 comprises a support bent rod 3321 connected to the lower sealing plate 3331, and two limiting pieces 3322 assembled on the support bent rod 3321, when the upper sealing plate is pressed down to be sealingly connected with the lower sealing plate 3331 to form an arc plate structure, the limiting piece 3322 located at the bottom of the lower sealing plate 3331 is in contact with the lower sealing plate 3331 to limit the position of the lower sealing plate 3331, and when the stretching structure 331 drives the upper outer sealing plate 3333 to slide on the surface of the support bent rod 3321 through the upper inner sealing plate 3334, the limiting piece 3322 located on the upper surface of the upper outer sealing plate 3333 is in abutment with the upper sealing plate to limit the position of the upper outer sealing plate 3333.

[0083] Illustratively, the support bent rod 3321 comprises a bend connected to the lower sealing plate 3331 and a straight rod connected to the bend, and the straight rod is inclined to the inner wall of the double valve rotatable sleeve 21 at a certain angle.

[0084] When the upper inner sealing plate 3334 is pulled, the upper inner sealing plate 3334 is flipped upwards, and is separated from the upper outer sealing plate 3333, while the upper outer sealing plate 3333 is linearly moved upwards along the surface of the supporting bent rod 3321 under the constraint of the limiting piece 3322 of the supporting bent rod 3321, so that the upper outer sealing plate 3333 is separated from the lower sealing plate 3331, and a fan-shaped expansion gap is formed between the two. At this time, the hinge joint between the upper inner sealing plate 3334 and the upper outer sealing plate 3333 is unfolded by a certain angle, and the diameter of the sealing ring hole, which can be used for inserting the mirror tube 12, is expanded, so as to form a zero-contact avoiding channel, thereby facilitating the insertion of the mirror tube 12.

[0085] When the upper inner sealing plate 3334 is pressed, the upper inner sealing plate 3334 is flipped downwards to adhere to the upper outer sealing plate 3333, so as to form an integrated body with the upper outer sealing plate 3333, and the upper outer sealing plate 3333 is pressed downwards to adhere to the lower sealing plate 3331. The integrated 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 in the middle of the sealing ring structure is consistent with the size of the outer wall of the mirror tube 12.

[0086] When the upper inner sealing plate 3334 is pressed, the stretching structure 331 is contracted and downward pushing force is applied, so as to force the upper inner sealing plate 3334 to flip downwards around the hinge joint to tightly adhere to the upper outer sealing plate 3333 to form a rigid integrated body. At the same time, the supporting bent rod 3321 guides the upper outer sealing plate 3333 to linearly move downwards along the surface of the bent rod until the upper outer sealing plate 3333 is limited by the limiting contact at the bottom. The contact between the upper sealing plate and the lower sealing plate 3331 gives the mirror tube 12 a progressive extrusion force, the mirror tube 12 and the silica gel sealing strip 3332 are extruded to occur radial elastic deformation, and the micro gap between the mirror tube 12 and the sealing ring hole is filled to block the liquid leakage, thereby avoiding the continuous extrusion of the mirror tube 12 and the sealing structure 333 to cause the failure of the sealing structure 333. In addition, the movement between the upper outer sealing plate 3333 and the upper inner sealing plate 3334 corrects and locks the mirror tube 12.

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

[0088] Referring to Figure 2 , Figure 3 , Figure 6 and Figure 7As shown, the guide structure 321 includes an inner arc function component and an outer arc function component that are engaged with each other. The inner arc function component of the circumferentially distributed guide portion 32 includes an inner arc guide plate 3211, inner guide plates 3212 connected to both sides of the inner arc guide plate 3211, and inner rolling balls 3217 distributed 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. The surface of the inner guide plate 3212 is penetrated by a guide groove 3213.

[0089] The outer arc action component includes an outer arc guide plate 3214, an outer guide plate 3215 connected to the two side surfaces of the outer arc guide plate 3214, and outer rolling balls distributed in an array along the outer arc of the outer arc guide plate 3214. The outer rolling balls are rolled and installed on the surface of the outer arc guide plate 3214. The end of the outer guide plate 3215 close to the inner arc guide plate 3211 is equipped with a positioning pin 3218. 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 arranged in a telescopic structure, and the adjustment structure 322 adjusts the gap between the outer arc guide plate 3214 and the inner arc guide plate 3211 by itself expansion and contraction, 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, and the outer arc guide plate 3214 is driven by the outer guide plates 3215 on both sides to expand and contract.

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

[0092] In one embodiment, the outer arc guide plate 3214 is composed of multiple sections of hinged arc plates, and radial telescopic linkage is achieved between adjacent plates through snap-fit ​​sliding grooves. When unfolded, each section of the arc plate expands radially outward to increase the overall arc length, so that under the drive of the adjustment structure 322, the overall arc edge length of the outer arc guide plate 3214 is extended or shortened to adapt to the guidance of the inner arc guide plate 3211.

[0093] Reference Figure 6 and Figure 9The adjusting structure 322 includes 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 being sleeved in the telescopic spring 3223 and being telescopic through the telescopic spring 3223 and the telescopic guide rod to change the gap between the inner arc guide plate 3211 and the outer arc guide plate 3214.

[0094] Secondly, the telescopic guide rod is used to make the telescopic spring 3223 linearly telescopic, and secondly, when the telescopic spring 3223 is compressed to the maximum telescopic amount, the outer arc guide plate 3214 and the inner arc guide plate 3211 become rigidly telescopic to prevent the telescopic spring 3223 from being plastically deformed or wound.

[0095] Specifically, the adjusting structure 322 is not vertically arranged between the inner arc guide plate 3211 and the outer arc guide plate 3214, but is arranged obliquely, 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 be obliquely inclined at a certain angle through the adjusting structure 322.

[0096] In an embodiment, the stretching structure 331 and the adjusting structure 322 are consistent in structure and different in distribution position.

[0097] When the stretching structure 331 is synchronously moved upward by extruding the guide part 32, the self-locking part 31 and the boosting part 34, the guide structure 321 and the adjusting structure 322 are pushed into the inner part of the child cone-shaped cavity from the connecting lower cavity. With the upward movement of the guide part 32, the guide cavity moves to the expanding end of the cone-shaped cavity, and the reaction force generated when the adjusting structure 322 is compressed pushes the outer arc guide plate 3214 and the inner arc guide plate 3211 to move relatively and oppositely, the adjacent two inner arc guide plates 3211 abut each other to form an inverted cone-shaped passage for guiding and passing the scope 12, and the outer arc guide plate 3214 moves upward along the inclined surface in the cone-shaped cavity through the outer ball 3216. The entire guide part 32 moves upward, which can drive the stretching structure 331 to be elongated.

[0098] The outer arc guide plate 3214 is pulled by the adjusting structure 322 to drive the inner arc guide plate 3211 to be obliquely inclined at a certain angle, so that the plurality of circumferentially distributed inner arc guide plates 3211 form an inverted cone-shaped passage.

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

[0100] Referring to Figures 6-10As shown, the self-locking part 31 comprises two elongated rods 312 inserted on the inner arc guide plate 3211 away from the lower sealing plate 3331, the two elongated rods 312 are movably connected with the force bearing plate 311 away from the inner arc guide plate 3211, a connecting rod 314 horizontally assembled between the two elongated rods 312, the auxiliary normal plate 313 is rotatably connected on the connecting rod 314, the auxiliary normal plate 313 is pushed to rotate by the boosting part 34 to adhere to the surface of the mirror tube 12 to lock the mirror tube 12.

[0101] Specifically, the inner arc guide plate 3211 is deflected at a certain angle, so that the plurality of circumferentially distributed extension rods form a diameter expanding channel extended by the inverted conical cavity.

[0102] Specifically, the force bearing plate 311 inclines to the taper surface of the taper groove under its own gravity, and when the handle 11 abuts on the force bearing plate 311, the force bearing plate 311 is adapted to adjust the angle to adhere to the bottom of the handle 11. In addition, the upper surface of the force bearing plate 311 is arc-shaped and polished, so that when the force bearing plate 311 moves relative to the bottom of the handle 11, the friction is small.

[0103] The connecting rod 314 comprises a central straight rod 3142 and side straight rods 3141 connected to both ends of the central straight rod 3142, the two side straight rods 3141 are assembled on the elongated rods 312, and the auxiliary normal plate 313 is rotatably connected to the central straight rod 3142; the auxiliary normal plate 313 comprises an arc-shaped adhering plate 3131, a penetrating plate 3132 and a triangular connecting plate 3133 connected as one body, and the arc-shaped adhering plate 3131 is arrayed with a plurality of silica gel convex plates 3134 away from the triangular connecting plate 3133.

[0104] Specifically, the boosting part 34 moves synchronously with the outer side guide plate 3215, but always abuts on the auxiliary normal plate 313 to prevent the auxiliary normal plate 313 from being excessively turned over and unable to adaptively adjust the angle to adhere to the mirror tube 12.

[0105] Referring to Figure 8 As shown, the boosting part 34 comprises an arc-shaped boosting plate 341 and a plurality of inclined pushing plates 342 of different lengths assembled on the arc-shaped boosting plate 341, the inclined surface of the inclined pushing plate 342 abuts on the triangular connecting plate 3133, and the arc-shaped boosting plate 341 is assembled on the outer side guide plate 3215; the arc-shaped boosting plate 341 is provided in an extension plate structure and is guided to extend or contract by the outer side guide plate 3215; wherein the outer arc boosting plate and the outer arc guide plate 3214 are similar structures.

[0106] Working principle: when the arthroscope body begins to insert into the mirror sheath body, the upper sealing plate and the lower sealing plate 3331 do not form a seal between them, the guide part 32 is moved upward to the tapered cavity of the special-shaped cavity, the self-locking part 31 is moved to the top of the connection upper cavity, the operator observes the position of the plurality of self-locking parts 31, and the mirror tube 12 is inserted into the range surrounded by the plurality of inner arc guide plates 3211 from the center surrounded by the plurality of self-locking parts 31.

[0107] In the process of gradually inserting the mirror tube 12, the tapered channel surrounded by the plurality of inner arc guide plates 3211 gradually shrinks in diameter, the mirror tube 12 contacts the inner arc guide plate 3211 and contacts the inner ball on the inner arc guide plate 3211, so that the inner arc guide plate 3211 and the inner ball of the mirror tube 12 are guided to pass through the channel formed by the plurality of inner arc guide plates 3211, at this time, because the outer arc guide plate 3214 gives the inner arc guide plate 3211 a certain thrust through the adjusting structure 322, the position of the mirror tube 12 is adjusted so that the mirror tube 12 is located in the axis direction of the double-valve rotatable sleeve 21.

[0108] With the continuous insertion of the mirror tube 12, the surface of the handle front end part contacts the bearing plate 311, the bearing plate 311 adaptively adjusts its own angle to tightly adhere to the handle front end part, so as to transmit the downward pressure to the inner arc guide plate 3211 through the elongated rod 312, the inner arc guide plate 3211 is further inclined, the adjusting structure 322 is compressed, the inner arc guide plate 3211 transmits force to the outer arc guide plate 3214 through the adjusting structure 322, the inner arc guide plate 3211, the outer arc guide plate 3214 and the adjusting structure 322 continue to move, the adjusting structure 322 is further compressed, and at the same time, the adjusting structure 322 applies a reverse force to the mirror tube 12, so that the angle of the mirror tube 12 is further adjusted.

[0109] The mirror tube 12 continues to insert downward, the outer arc guide plate 3214 moves to the connection between the tapered cavity and the connection lower cavity, and because the inner wall of the connection lower cavity is a vertical straight cylinder structure, the outer arc guide plate 3214 stops radial contraction, the multi-section hinged arc-shaped plate is inwardly retracted under the reset force of the adjusting structure 322, the outer ball is attached to the inner wall of the connection lower cavity, and the mirror tube 12 is guided to pass straight through, at this time, the telescopic spring 3223 and the telescopic guide rod are compressed to the maximum.

[0110] The plurality of circumferentially distributed inner arc guide plates form a straight cylinder channel, the size of the channel is greater than the outer diameter of the mirror tube 12, the inner arc guide plate 3211 is adjusted while driving the mirror tube 12 to the axis position of the double-valve rotatable sleeve 21, at this time, the mirror tube 12 passes through the connection lower cavity and enters the inner cavity of the sheath tube 22, the inner ball 3217 of the inner arc guide plate 3211 is separated from the mirror tube 12, and the mirror tube 12 extends straight along the axial direction of the sheath tube 22.

[0111] At the same time, since the outer arc guide plate 3214 drives the inner arc guide plate 3211 to move, the outer guide plate 3215 moves along the guide groove 3213 of the inner guide plate 3212 through the positioning pin 3218, the arc-shaped booster plate 341 is retracted, the inclined guide plate pushes the auxiliary guide plate 313 to adjust the position of the auxiliary guide plate 313, the auxiliary guide plate 313 adjusts the angle to tightly press against the outer wall of the mirror tube 12, and the elastic deformation of the silica gel convex plate 3134 realizes the radial clamping of the mirror 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 be pressed downward, the booster part 34, the guide part 32 and the self-locking part 31 continue to move downward, the stretching structure 331 is retracted, the upper outer sealing plate 3333 and the upper inner sealing plate 3334 move downward along the support bent rod 3321, and the lower sealing plate 3331 is horizontally attached, the silica gel sealing strip 3332 at the edge of the upper sealing plate is extruded against the outer wall of the mirror tube 12, the gap is filled through radial elastic deformation to realize sealing, and at the same time, the sealing silica gel strip of the upper sealing plate is pressed on the surface of the mirror tube 12 to realize the locking of the mirror tube 12.

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

[0114] Of course, the above content is only the preferred embodiment of the present application, and cannot be considered as limiting the scope of the embodiment of the present application. The present application is also not limited to the above examples, and the equivalent changes and improvements made by those skilled in the art within the essential scope of the present application should be attributed to the patent coverage range of the present application.

[0115] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0116] Secondly: the present application discloses the structure involved in the embodiment of the present application, other structures can refer to the usual design, and the same embodiment and different embodiments of the present application can be combined with each other under the condition of no conflict;

[0117] Finally: the above is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An arthroscopic device, characterized in that: include: The sheath body comprises a double-valve rotatable sleeve (21) and a sheath tube (22) connected to the lower part of the double-valve rotatable sleeve (21), wherein a special-shaped cavity is formed in the double-valve rotatable sleeve (21) and is connected to the inner cavity of the sheath tube (22), and the special-shaped cavity comprises an upper connecting cavity, a tapered cavity and a lower connecting cavity which are connected in sequence; The arthroscope body comprises a handle (11) and a mirror tube (12) connected to the handle (11), wherein the mirror tube (12) passes through the sheath tube (22) from the special-shaped cavity and extends outward, and the handle (11) is buckled and connected to the upper cavity and seals the special-shaped cavity; A guide sealing structure comprises a sealing portion (33), a guide portion (32), a boosting portion (34) and a self-locking portion (31) arranged axially along a special-shaped cavity, wherein the sealing portion (33) comprises a sealing structure (333), a supporting structure (332) and a stretching structure (331), wherein the guide portion (32) is connected to the sealing structure (333) via the stretching structure (331), and wherein the stretching structure (331) synchronously drives the sealing structure (333) and the guide portion (32) to move up and down along the support structure (332) by its own expansion and contraction. The portion (32) includes a guide structure (321) and an adjustment structure (322), wherein the adjustment structure (322) adjusts the free width of the guide structure (321) by self-extension, so as to drive the guide structure (321) to move upward into the tapered cavity, and simultaneously drives the sealing structure (333) to fold to expand the size of the channel allowing the mirror tube (12) to be inserted, and the self-locking portion (31) is connected to an end of the guide structure (321) away from the stretching structure (331), so as to synchronize the movement of the guide structure (321) to move into the upper cavity, so as to guide the mirror tube (12) to be inserted; The boosting portion (34) is connected to the guide structure (321), and follows the change of the width of the guide structure (321) to adjust its own position, so as to abut against the self-locking portion (31) and adjust the angle of the self-locking portion (31).

2. The arthroscopic device according to claim 1, wherein: The sealing portion (33), the guide portion (32), the boosting portion (34) and the self-locking portion (31) are all in multiple groups, which correspond to each other and are distributed axially and circumferentially along the conical cavity; the guide structure (321) includes an inner arc action component and an outer arc action component that are mutually engaged and connected, the inner arc action component includes an inner arc guide plate (3211), an inner guide plate (3212) connected to both sides of the inner arc guide plate (3211), and inner rolling balls (3217) distributed in an array along the inner arc surface of the inner arc guide plate (3211), the inner rolling balls (3217) are rotatably arranged on the inner arc guide plate (3211), and a guide groove (3213) is passed through the surface of the inner guide plate (3212); The outer arc action component includes an outer arc guide plate (3214), outer guide plates (3215) connected to the two side surfaces of the outer arc guide plate (3214), and outer rolling balls distributed in an array along the outer arc of the outer arc guide plate (3214). The end of the outer guide plate (3215) close to the inner arc guide plate (3211) is equipped with a positioning pin (3218), and the positioning pin (3218) passes through the guide groove (3213) and is engaged in the guide groove (3213).

3. The arthroscopic device according to claim 2, wherein: The outer arc guide plate (3214) is arranged in a telescopic structure, and the adjustment structure (322) adjusts the gap between the outer arc guide plate (3214) and the inner arc guide plate (3211) by itself extending and retracting, 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 direction of the inner guide plate (3212) under the guidance of the positioning pins (3218), and the outer arc guide plates (3214) are driven by the outer guide plates (3215) on both sides to extend and retract.

4. The arthroscopic device according to claim 3, wherein: The adjustment structure (322) includes two groups 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 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). The telescopic spring (3223) and the telescopic guide rod are extended and retracted to push the gap between the inner arc guide plate (3211) and the outer arc guide plate (3214) to change.

5. The arthroscopic device according to claim 4, wherein: The sealing structure (333) includes an asymmetrically arranged lower sealing plate (3331) and an upper sealing plate, wherein the lower sealing plate (3331) and the upper sealing plate form a fan-shaped plate structure, wherein the lower sealing plate (3331) is assembled on the inner wall of the double-valve rotatable sleeve (21), and the upper sealing plate includes a silicone sealing strip (3332) laid along the edge of the upper sealing plate, and the upper sealing plate is pressed downward to be sealed and connected with the lower sealing plate (3331).

6. The arthroscopic device according to claim 5, wherein: The upper sealing plate includes an upper outer sealing plate (3333) and an upper inner sealing plate (3334) that are hinged to each other. The upper outer sealing plate (3333) is connected to the lower sealing plate (3331) through a supporting structure (332) and is driven by tension so that under the guidance of the supporting structure (332), the upper outer sealing plate (3333) moves upward in a straight line relative to the lower sealing plate (3331). The tensile structure (331) array is assembled on the side of the upper inner sealing plate (3334) facing away from the lower sealing plate (3331).

7. The arthroscopic device according to claim 6, wherein: The self-locking portion (31) comprises two extension rods (312) plugged into the side of the inner arc guide plate (3211) facing away from the lower sealing plate (3331); the sides of the two extension rods (312) facing away from the inner arc guide plate (3211) are movably connected to the load-bearing plate (311); a horizontally arranged connecting rod (314) is assembled between the two extension rods (312); an auxiliary correction plate (313) is rotatably connected to the connecting rod (314); and the boosting portion (34) pushes the auxiliary correction plate (313) to rotate so as to fit the surface of the mirror tube (12) to lock the mirror tube (12).

8. The arthroscopic device according to claim 7, wherein: The connecting rod (314) includes a central straight rod (3142) and side straight rods (3141) connected to both ends of the central straight rod (3142), the side straight rods (3141) are assembled on the extension rod (312), and the auxiliary plate (313) is rotatably connected to the central straight rod (3142); The auxiliary plate (313) comprises an arc-shaped laminating plate (3131), an interlaced plate (3132) and a triangular connecting plate (3133) connected as one body, and a plurality of silicone convex plates (3134) are arranged on a side of the arc-shaped laminating plate (3131) facing away from the triangular connecting plate (3133).

9. The arthroscopic device according to claim 8, wherein: The boosting portion (34) includes an arc-shaped boosting plate (341) and a plurality of oblique push plates (342) of different lengths mounted on the arc-shaped boosting plate (341), wherein the oblique surface of the oblique push plate (342) abuts against the triangular connecting plate (3133), and the arc-shaped boosting plate (341) is mounted on the outer guide plate (3215); The arc-shaped boosting plate (341) is provided in a telescopic plate structure, and is guided and retracted by the outer guide plate (3215).

10. The arthroscopic device according to claim 9, wherein: The grip (11) comprises a movably connected handle rear end and a handle front end, and the handle front end is buckled into the connection upper cavity.

Images