Gonioscopy device

Abstract

The application discloses a goniolens device, a lens assembly comprising a connecting seat and a lens, the connecting seat being used for supporting the lens, a handle assembly extending along a first direction, comprising a connecting mechanism and a control mechanism connected with each other, the connecting mechanism being rotatably connected with the connecting seat, the control mechanism having a locking state and an unlocking state, wherein the control mechanism comprises a driving rod and a driven rod, in the locking state, the driving rod drives the driven rod to abut against the connecting seat in a clamping mode, so that the position of the driven rod and the connecting seat is relatively fixed; in the unlocking state, the driving rod is separated from the driven rod, and / or the driven rod is separated from the connecting seat, so that the driven rod can rotate relative to the connecting seat in a circumferential direction. The goniolens device disclosed by the application makes the handle assembly comprise the connecting mechanism, the connecting mechanism being rotatably connected with the lens assembly, so that the handle assembly can rotate relative to the lens assembly through the connecting mechanism, and the function of adjusting the angle between the handle assembly and the lens assembly is realized, and the operation convenience of the goniolens device is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical devices, and particularly relates to a gonioscopy device. BACKGROUND

[0002] Primary open angle glaucoma is a disease state characterized by elevated intraocular pressure, which is usually attributed to restricted outflow through the trabecular meshwork and Schlemm's canal, anatomical structures located at the angle of the anterior chamber. Therefore, the angle of the anterior chamber is the main passage for aqueous outflow, and the obstruction of aqueous outflow caused by lesions at the angle will lead to the increase of intraocular pressure and the occurrence of glaucoma. Current surgical treatment for glaucoma patients mainly aims to accurately observe these fine structures in the angle area, and increase the amount of aqueous outflow through surgical operation. However, due to the special structure of the eyeball, the light will produce total reflection from the corneal surface, so the angle area of the anterior chamber cannot be directly observed.

[0003] Currently, medical professionals generally use gonioscopes to assist in observing the anterior chamber angle area of patients. The gonioscope provides the ophthalmologist with an angled view through the cornea, achieving visualization of the peripheral part of the anterior chamber. However, the gonioscope of the prior art uses a simple handle, and the direction of the handle is fixed, so the angle between the handle and the direction of the lens cannot be adjusted conveniently. SUMMARY

[0004] The gonioscopy device provided by the embodiments of the present application aims to adjust the angle between the handle assembly and the lens assembly.

[0005] The embodiments of the first aspect of the present application provide a gonioscopy device, comprising a lens assembly and a handle assembly, the lens assembly comprising a connecting seat and a lens, the connecting seat being used for supporting the lens, the lens having an axial direction, the handle assembly extending along a first direction and comprising a connecting mechanism and a control mechanism connected to each other, the connecting mechanism being rotatably connected to the connecting seat, and the control mechanism having a locked state and an unlocked state, wherein the control mechanism comprises a driving rod and a driven rod, in the locked state, the driving rod drives the driven rod to abut against the connecting seat to fix the positions of the driven rod and the connecting seat relative to each other, and in the unlocked state, the driving rod is separated from the driven rod, and / or the driven rod is separated from the connecting seat to enable the driven rod to rotate relative to the connecting seat in the circumferential direction.

[0006] According to the embodiments of the first aspect of the present application, a plurality of clamping grooves are arranged on the connecting seat, and in the locked state, the distal end of at least part of the driven rod is located in any one of the clamping grooves and abuts against the profile surface of the clamping groove.

[0007] According to an embodiment of the first aspect of the present application, the connecting seat is provided with a track groove, the track groove extends along the circumference of the lens and surrounds at least part of the lens; the connecting mechanism comprises a first sleeve, the first sleeve is sleeved outside the driven rod and the optional driving rod, the first sleeve is provided with a first connecting part, at least part of the first connecting part is located in the track groove and can slide along the track groove; the connecting mechanism further comprises a fixing member for fixing the first connecting part of the first sleeve in the track groove.

[0008] According to an embodiment of the first aspect of the present application, the lens has an axis perpendicular to the connecting seat, and a first cylindrical side surface and a second cylindrical side surface are sequentially arranged from bottom to top along the extension direction of the axis, the radius of the second cylindrical side surface relative to the axis is greater than the radius of the first cylindrical side surface relative to the axis; the connecting seat comprises a fitting part and a reinforcing part, the fitting part is fitted with the first cylindrical side surface and matches the shape of the first cylindrical side surface; the two ends of the reinforcing part are fixedly connected with the fitting part, and part of the reinforcing part is spaced apart from the fitting part to form a track groove between the fitting part and the reinforcing part.

[0009] According to an embodiment of the first aspect of the present application, the lens comprises a lower surface and an upper surface arranged oppositely in the extension direction of the axis, the lower surface is recessed towards the upper surface, the upper surface is convex away from the lower surface and is a part of a sphere, both the upper surface and the lower surface are inclined towards the plane where the reinforcing part is located, the lower surface intersects with the first cylindrical side surface, and the included angle between the tangent of the lower surface and the tangent of the first cylindrical side surface is 45°-75°, the center of the sphere of the upper surface is located on the side of the control mechanism facing the lower surface and is away from the first cylindrical side surface; and optionally, an inclined cutting structure is arranged on the side of the lens away from the handle assembly, the inclined cutting structure is inclined towards the axis from the upper surface to the lower surface.

[0010] According to an embodiment of the first aspect of the present application, the connecting mechanism comprises a support sleeve, the support sleeve is sleeved outside the driving rod and / or the driven rod; the outer periphery of the distal end of the driving rod is provided with an external thread, the inner periphery of the proximal end of the support sleeve is provided with an internal thread matched with the external thread, when the driving rod rotates relative to the support sleeve, the driving rod approaches or moves away from the driven rod, thereby switching the control mechanism between the locked state and the unlocked state.

[0011] According to an embodiment of the first aspect of the present application, the support sleeve is provided with a receiving hole penetrating through the support sleeve, the receiving hole comprises a first segment and a second segment arranged in sequence from the distal end to the proximal end, the first segment is arranged close to the driving rod, the internal thread is located on the profile surface of the first segment, the second segment is arranged close to the first segment and has a diameter greater than that of the first segment; the control mechanism further comprises a first limiting member, the first limiting member is connected with the driving rod and located in the second segment, when the driving rod moves in the direction away from the driven rod until the first limiting member abuts against the profile surface of the second segment towards the first segment, the support sleeve prevents the driving rod from continuing to move away from the driven rod.

[0012] According to an embodiment of the first aspect of the present application, the first limiting member is a sleeve which is sleeved on the driving rod and connected with the driving rod, the outer peripheral surface diameter of the first limiting member is smaller than the diameter of the second section, and the outer peripheral surface diameter of the first limiting member is greater than the diameter of the first section.

[0013] According to an embodiment of the first aspect of the present application, the control mechanism further comprises a first elastic member which is arranged in the axial interior of the first limiting member and used to apply an action force to the driven rod to make the driven rod approach the connecting base; or the end of the driving rod towards the driven rod is provided with a recessed accommodating cavity, at least part of the first elastic member extends into the accommodating cavity and abuts against the profile surface of the accommodating cavity, and the other end of the first elastic member abuts against the driven rod; or the end of the driven rod towards the driving rod is provided with a recessed accommodating cavity, at least part of the first elastic member extends into the accommodating cavity and abuts against the profile surface of the accommodating cavity, and the other end of the first elastic member abuts against the driving rod.

[0014] According to an embodiment of the first aspect of the present application, the connecting mechanism comprises a limiting sleeve which is sleeved on the driving rod, and the sleeve wall of the limiting sleeve is provided with a first limiting slot in the shape of a long strip and a second limiting slot in the shape of a sawtooth at the end of the sleeve wall towards the driven rod, the axial length of the first limiting slot is greater than the length of the second limiting slot, and the second limiting slot is arranged on the end surface of the sleeve wall between adjacent first limiting slots; the end surface of the driven rod towards the driving rod is provided with limiting teeth, in the direction perpendicular to the first direction, the width of the limiting teeth is less than or equal to the width of the first limiting slot, in the unlocking state, at least part of the limiting teeth is located in the first limiting slot and abuts against the profile surface of the first limiting slot; in the locking state, at least part of the limiting teeth is located in the second limiting slot and abuts against the profile surface of the second limiting slot.

[0015] According to an embodiment of the first aspect of the present application, the end surface of the limiting teeth towards the driving rod is provided with an inclined surface which forms an acute angle with the first direction, and the end surface of the second limiting slot towards the driven rod is provided with a toothed structure which matches the inclined surface of the limiting teeth; and / or, in the direction perpendicular to the first direction, the inner diameter of the limiting teeth is the same as the inner diameter of the driving rod, the outer diameter of the limiting teeth is greater than the minimum outer diameter of the driving rod, and the outer diameter of the limiting teeth is the same as the outer diameter of the limiting sleeve.

[0016] According to an embodiment of the first aspect of the present application, the end surface of the driving rod towards the driven rod is provided with driving teeth; the control mechanism further comprises a first intermediate state, a second intermediate state and a third intermediate state, in the first intermediate state, the driving rod moves towards the driven rod, and drives the driven rod to approach the connecting base through the abutting driving teeth and limiting teeth until the limiting teeth leave the first limiting slot; in the second intermediate state, the driving rod continues to move towards the driven rod, the limiting teeth are extruded by the driving teeth and drive the driven rod to rotate along the axial direction thereof; in the third intermediate state, the driving rod moves away from the driven rod, and the driven rod approaches the limiting sleeve until the control mechanism is switched to the locking state.

[0017] According to an embodiment of the first aspect of the present application, the driving tooth comprises an inclined surface at an acute angle with the first direction, and the inclined surface of the driving tooth matches the inclined surface of the limiting tooth.

[0018] According to an embodiment of the first aspect of the present application, the maximum outer diameter of the limiting tooth of the driven rod is greater than the outer diameter of the portion of the driven rod adjacent to the limiting tooth; the control mechanism further comprises a second elastic member, which is sleeved on the driven rod below the limiting tooth and abuts against the distal end of the limiting tooth, and the second elastic member is used to apply a force to the driven rod to move it towards the limiting sleeve.

[0019] According to an embodiment of the first aspect of the present application, a second limiting member is arranged on the outer circumferential surface of the driving rod, and in a direction perpendicular to the first direction, the maximum outer diameter of the second limiting member is equal to the maximum outer diameter of the limiting tooth and is less than or equal to the maximum outer diameter of the first limiting groove; at least part of the second limiting member is located in the first limiting groove and can slide in the first limiting groove when the driving rod moves.

[0020] According to an embodiment of the first aspect of the present application, in the first direction, the connecting mechanism comprises a supporting sleeve and a second sleeve in sequence, the outer diameter of the limiting tooth is the same as the outer diameter of the limiting sleeve, the supporting sleeve is sleeved on the outer side of the limiting sleeve and the limiting tooth and is fixedly connected with the limiting sleeve, and the second sleeve is sleeved on the outside of the driven rod; the two ends of the second elastic member abut against the distal end of the limiting tooth and the proximal end surface of the second sleeve, respectively.

[0021] The gonioscope device of the present application comprises a handle assembly and a lens assembly, the handle assembly comprises a connecting mechanism, the lens assembly comprises a connecting seat and a lens, the connecting seat is used to support the lens, the connecting mechanism of the handle assembly is rotatably connected with the connecting seat, so that the handle assembly can be rotated relative to the lens through the connecting mechanism, thereby realizing the function of adjusting the angle between the handle assembly and the lens and improving the operation convenience of the gonioscope device. The handle assembly further comprises a control mechanism, the control mechanism comprises a driving rod and a driven rod, the driven rod is driven by the driving rod, the connection state of the driven rod and the connecting seat can be changed, so that the gonioscope device has a locked state and an unlocked state, in the unlocked state, the driving rod is separated from the driven rod, and / or the driven rod is separated from the connecting seat, so that the handle assembly can be rotated relative to the lens assembly, in the locked state, the driven rod is in abutment with the connecting seat, so that the handle assembly is fixedly connected with the lens assembly, at this time, the handle assembly and the lens assembly will not rotate beyond the expectation, thereby improving the safety of using the gonioscope device in the surgical process. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments of the present application will be briefly introduced as follows, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0023] Figure 1 This is a front view structural diagram of the gonioscope device according to some embodiments of this application;

[0024] Figure 2 An example is shown. Figure 1 A cross-sectional schematic diagram of the gonioscope device in the middle;

[0025] Figure 3 A top view schematic diagram of an example lens assembly is shown;

[0026] Figure 4 A top view schematic diagram of an example gonioscope device is shown;

[0027] Figure 5 An exploded view of an example gonioscope device is shown.

[0028] Figure 6 A cross-sectional schematic diagram of an example gonioscope device in another configuration is shown;

[0029] Figure 7 An exploded view of another example of a gonioscope device is shown.

[0030] Figure 8 A schematic diagram of the dissecting visual structure of another example of a gonioscope device;

[0031] Figure 9 An example is shown. Figure 8 One of the front view schematic diagrams of the gonioscope device in the image, after concealing the support sleeve, the first sleeve, and the lens assembly;

[0032] Figure 10 An example is shown. Figure 8 The second frontal view of the gonioscope device after concealing the support sleeve, the first sleeve, and the lens assembly;

[0033] Figure 11 An example is shown. Figure 8 The third schematic diagram of the frontal structure of the gonioscope device after concealing the support sleeve, the first sleeve and the lens assembly.

[0034] Figure label:

[0035] 10. Gonioscope device;

[0036] 100. Lens assembly; 110. Connecting seat; 111. Track groove; 112. Slot; 114. Fitting part; 115. Axis; 116. Reinforcing part; 120. Lens; 121. Lower surface; 122. Upper surface; 125. First columnar side surface; 126. Beveled structure; 128. Second columnar side surface;

[0037] 200, handle assembly; 210, connecting mechanism; 211, first sleeve; 2111, first connecting part; 212, fixing part; 213, supporting sleeve; 214, limiting sleeve; 2141, first limiting groove; 2142, second limiting groove; 215, second sleeve; 2131, internal thread; 2132, accommodating hole; 220, control mechanism; 221, driving rod; 2211, external thread; 2212, accommodating cavity; 2213, driving tooth; 2214, second limiting part; 222, driven rod; 2221, limiting tooth; 223, first limiting part; 224, first elastic part; 225, second elastic part;

[0038] x, first direction. DETAILED DESCRIPTION

[0039] In order to make the purposes, technical solutions and advantages of the present application clearer, the following further describes the present application with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, but not to limit the present application. The present application can be implemented without some of the specific details by those skilled in the art. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application.

[0040] It should be noted that, in this document, the terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the elements defined by the statement "include" do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0041] In order to solve the technical problems involved in the background art, the applicant provides a periscope device, comprising a lens assembly and a handle assembly, the handle assembly comprising a connecting mechanism and a control mechanism connected to each other, the connecting mechanism being rotationally connected with the lens assembly, the control mechanism having a locked state and an unlocked state, in the locked state, the handle assembly is fixedly connected with the lens assembly, in the unlocked state, the handle assembly can rotate relative to the lens assembly.

[0042] The gonioscope device of this application includes a connecting mechanism in the handle assembly, which is rotatably connected to the lens assembly. This allows the handle assembly to rotate relative to the lens assembly via the connecting mechanism, thereby adjusting the angle between the handle assembly and the lens assembly and improving the ease of operation of the gonioscope device. Furthermore, by including a control mechanism in the handle assembly, which has a locked state and an unlocked state, the handle assembly can rotate relative to the lens assembly in the unlocked state, while in the locked state, the handle assembly and lens assembly are fixedly connected. In this state, unexpected rotation between the handle assembly and the lens assembly will not occur, thus improving the safety of using the gonioscope device during surgery.

[0043] The gonioscope device provided in the embodiments of this application will now be described in conjunction with the accompanying drawings. In the drawings, for ease of drawing, the dimensions shown are not necessarily proportional to the actual dimensions.

[0044] Please refer to Figures 1 to 3 , Figure 1 This is a front view structural diagram of the gonioscope device according to some embodiments of this application; Figure 2 An example is shown. Figure 1 A cross-sectional schematic diagram of the gonioscope device in the middle; Figure 3 A top view schematic diagram of an example lens assembly is shown; Figure 4 A top view schematic diagram of an example gonioscope device is shown; Figure 5 An exploded view of an example gonioscope device is shown. The diagram is provided to better illustrate the structure. Figure 4 The connector position in the image has been partially rendered with perspective.

[0045] like Figures 1 to 5 As shown, this application provides a gonioscope device 10, including a lens assembly 100 and a handle assembly 200. The lens assembly 100 includes a connecting seat 110 and a lens 120. The connecting seat 110 supports the lens 120 and connects to the handle assembly 200. The handle assembly 200 includes a connecting mechanism 210 and a control mechanism 220 connected to each other. The connecting mechanism 210 is rotatably connected to the connecting seat 110. The control mechanism includes a drive rod 221 and a driven rod 222. In the locked state, the drive rod 221 drives the driven rod 222 to engage with the connecting seat 110, so that the driven rod 222 and the connecting seat 110 are relatively fixed in position. In the unlocked state, the drive rod 221 separates from the driven rod 222, and / or the driven rod 222 separates from the connecting seat 110, so that the driven rod 222 can rotate circumferentially relative to the connecting seat 110.

[0046] The gonioscope device 10 of the present application, by making the handle assembly 200 include a connecting mechanism 210, the lens assembly 100 includes a connecting seat 110 and a lens 120, the connecting seat 110 is used to support the lens 120, the connecting mechanism 210 of the handle assembly 200 is rotatably connected with the connecting seat 110, so that the handle assembly 200 can be rotated relative to the lens 120 through the connecting mechanism 210, thereby realizing the function of adjusting the angle between the handle assembly 200 and the lens 120, and improving the operation convenience of the gonioscope device 10. By making the handle assembly 200 further include a control mechanism 220, the control mechanism 220 includes a driving rod 221 and a driven rod 222, the driven rod 222 is driven by the driving rod 221, the connection state of the driven rod 222 and the connecting seat 110 can be changed, so that the gonioscope device 10 has a locked state and an unlocked state, in the unlocked state, the driving rod 221 is separated from the driven rod 222, and / or, the driven rod 222 is separated from the connecting seat 110, so that the handle assembly 200 can be rotated relative to the lens assembly 100, in the locked state, the driven rod 222 is engaged with the connecting seat 110, so that the handle assembly 200 is fixedly connected with the lens assembly 100, at this time, the handle assembly 200 and the lens assembly 100 will not rotate beyond the expected, thereby improving the safety of using the gonioscope device during the operation process.

[0047] Optionally, the extension direction of the handle assembly 200 is defined as the first direction x, the lens 120 has an axis 115 perpendicular to the connecting seat 110, and the first direction x forms an acute angle with the axis 115. Optionally, the lens 120 has a lower surface 121 and an upper surface 122 arranged opposite to each other in the extension direction of the axis 115, the lower surface 121 is a concave spherical surface for attaching to the eyeball of the patient, and the upper surface 122 is a convex spherical surface, so that the refracted light is more easily observed by the observer, thereby improving the observation effect of the gonioscope device 10. Optionally, as shown in Figure 1 and Figure 5 The lens 120 further includes a first cylindrical side surface 125 and a second cylindrical side surface 128 surrounding the axis 115, and the radius of the second cylindrical side surface 128 is greater than that of the first cylindrical side surface 125 with respect to the axis 115, thereby forming a step at the joint of the two.

[0048] Optionally, the connecting seat 110 is arranged around at least part of the lens 120, and the connecting seat 110 is further provided with a track groove 111 extending in a circular arc direction and surrounding at least part of the lens. At least part of the connecting mechanism 210 is located in the track groove 111 and can slide along the track groove 111, when the control mechanism 220 is in the unlocked state, the angle between the handle assembly 200 and the lens assembly 100 changes when the connecting mechanism 210 slides along the extension direction of the track groove 111. Specifically, as shown in Figure 1 , Figure 3 and Figure 4As shown, the connecting seat 110 comprises a fitting part 114 and a reinforcing part 116. The fitting part 114 matches the shape of the first cylindrical side surface 125 in the axial extension direction, and is used to fit the first cylindrical side surface 125 of the lens 120; the two ends of the reinforcing part 116 are fixedly connected to the fitting part 114, and part of the reinforcing part 116 is arranged in a spaced manner with the fitting part 114, so as to form a track groove 111 between the fitting part 114 and the reinforcing part 116. For example, the extension path of the part of the reinforcing part 116 arranged in a spaced manner with the fitting part 114 is arranged in parallel with the extension path of the fitting part 114, that is, the part of the reinforcing part 116 arranged in a spaced manner with the fitting part 114 and the fitting part 114 are arranged at equal intervals, so that the size of the track groove 111 is uniform.

[0049] Optionally, the sum of the radius of the first cylindrical side surface 125 and the thickness of the fitting part 114 is equal to the radius of the second cylindrical side surface 128, that is, the fitting part 114 is flush with the second cylindrical side surface 128 after installation. The fitting part 114 matches the shape of the first cylindrical side surface 125 in the axial extension direction 115, so as to increase the contact area of the fitting part 114 and the lens 120 in the axial extension direction 115.

[0050] The upper surface 122 and the lower surface 121 of the lens 120 are both inclined towards the plane where the reinforcing part 116 is located. The lower surface 121 intersects the first cylindrical side surface 125, and preferably, at the intersection position of the lower surface 121 and the first cylindrical side surface 125, the included angle between the tangent of the lower surface 121 and the tangent of the first cylindrical side surface 125 is 45°-75°; the spherical center of the upper surface 122 is located on the side of the control mechanism 220 facing the lower surface 121, and is away from the first cylindrical side surface 125.

[0051] Optionally, as shown in Figure 1 , Figure 5 and Figure 6 , the lens 120 is generally cylindrical along the axial direction 115, and in the assembled state, the lens 120 is provided with a bevel structure 126 on the side away from the handle assembly 200, the bevel structure 126 is inclined from the upper surface 122 to the lower surface 121 towards the axial direction 115, when the lower surface 121 is fitted to the anterior chamber angle of a person, the observation area of the upper surface 122 is increased, the introduction of external light is increased, and the operation is facilitated.

[0052] In the use of the chamber angle mirror device 10 of the present application, the operator first switches the control mechanism 220 to the unlocked state, adjusts the angle between the handle assembly 200 and the lens assembly 100, and switches the control mechanism 220 to the locked state after the adjustment is completed, so as to fixedly connect the handle assembly 200 and the lens assembly 100. Then the operator holds the handle assembly 200 and makes the lower surface 121 of the lens 120 adhere to the eyeball of the patient, and observes the chamber angle area of the patient through the light refracted by the upper surface 122 of the lens 120.

[0053] Optionally, the driving rod 221 and the driven rod 222 both extend along the first direction x.

[0054] Optionally, a plurality of clamping grooves 112 are arranged on the connecting seat 110, away from the side of the abutting part 114, and surround the lens 120. In the locked state, the distal end of the driven rod 222 is located in any one of the clamping grooves 112 and abuts against the profile surface of the clamping groove 112.

[0055] Specifically, the shape of the distal end of the driven rod 222 towards the connecting seat 110 is spherical, when the distal end of the driven rod 222 extends into the clamping groove 112, the spherical end of the driven rod 222 can expand the contact area with the clamping groove 112, thereby improving the friction between the driven rod 222 and the clamping groove 112, so as to prevent the driven rod 222 from sliding transversely, and improve the connection stability of the connecting seat 110 and the driven rod 222.

[0056] The housing corner mirror device 10 of the present application, by making the distal end of the driven rod 222 abut against the profile surface of any one of the clamping grooves 112 in the locked state, uses the friction between the driven rod 222 and the profile surface of the clamping groove 112 to fix the position between the driven rod 222 and the connecting seat 110, thereby realizing the fixed connection of the handle assembly 200 and the lens assembly 100. By arranging a plurality of clamping grooves 112 on the connecting seat 110, any one of the clamping grooves 112 can cooperate with the driven rod 222, so that there are a plurality of fixed positions between the driven rod 222 and the connecting seat 110.

[0057] Please continue to refer to Figures 3 to 5 In some embodiments, referring to the above, the connecting seat 110 is also provided with a track groove 111, which extends along the circumference of the lens 120 and surrounds at least part of the lens 120, and the connecting mechanism 210 includes a first sleeve 211, which is sleeved outside the driven rod 222 and optionally the driving rod 221, and the distal end of the first sleeve 211 is provided with a first connecting part 2111, which can be assembled in the track groove 111 and slide along the track groove 111. Among them, the first sleeve 211 is sleeved outside the driven rod 222 and optionally the driving rod 221, and when the first sleeve 211 is sleeved outside the driven rod 222, it can also be sleeved outside the driving rod 221 or not sleeved outside the driving rod 221.

[0058] Optionally, the connecting mechanism 210 further includes a fixing part 212, and the end of the first connecting part 2111 extends into the track groove 111 and is clamped with the fixing part 212. The fixing part 212 is used to prevent the first connecting part 2111 from being separated from the track groove 111.

[0059] The housing corner mirror device 10 of the present application is connected with the first connecting part 2111 through the fixing part 212, so that the first connecting part 2111 can slide along the extension direction of the track slot 111 without being separated from the track slot 111. In other words, after being assembled, the fixing part 212 is used to fix the first connecting part 2111 with the clamping slot 112, and no matter in the unlocked state or the locked state, it can prevent the first connecting part 2111 from being separated from the track slot 111, and ensure the first connecting part 2111 to slide along the track slot 111. In the locked state, the driven rod 222 abuts against the profile surface of the clamping slot 112.

[0060] Please refer to the following figures Figure 2 , Figure 5 and Figure 6 , Figure 6 show a cross-sectional view of an example of the housing corner mirror device in another state. Among them, Figure 2 the housing corner mirror device in the locked state, Figure 6 the housing corner mirror device in the unlocked state. Figure 6 the housing corner mirror device in the locked state is only partially cross-sectioned, and Figure 6 the first sleeve and the lens in the figure are hidden.

[0061] As shown in Figure 2 , Figure 5 and Figure 6 , in some embodiments, the connecting mechanism 210 further comprises a supporting sleeve 213, which is sleeved outside the driving rod 221 and / or the driven rod 222. The outer circumferential surface of the distal end of the driving rod 221 is provided with an external thread 2211, and the inner circumferential surface of the proximal end of the supporting sleeve 213 is provided with an internal thread 2131 matched with the external thread. When the driving rod 221 rotates relative to the supporting sleeve 213, the driving rod 221 approaches or moves away from the driven rod 222, thereby switching the control mechanism 220 between the locked state and the unlocked state.

[0062] Optionally, the supporting sleeve 213 is provided with an accommodation hole 2132 penetrating through the supporting sleeve 213, and the accommodation hole 2132 comprises a first segment (not marked) and a second segment (not marked) arranged in sequence from the distal end to the proximal end. The first segment is arranged close to the driving rod 221, and the internal thread 2131 is located on the profile surface of the first segment. The second segment is arranged close to the first segment, and the diameter of the second segment is greater than that of the first segment.

[0063] Optionally, the accommodating hole 2132 further comprises a third section (not labeled) located on the side of the second section away from the first section. The profile surface of the third section is also provided with threads, and the support sleeve 213 is partially sleeved on the first sleeve 211 and connected with the first sleeve 211 through the threads on the third section. When the first sleeve 211 does not rotate relative to the support sleeve 213, the first sleeve 211 and the support sleeve 213 are fixedly connected and move synchronously. Those skilled in the art can understand that, Figure 5 the black part inside the support sleeve 213 at both ends is the internal thread.

[0064] During assembly, the first sleeve 211 is sleeved on the driven rod 222 to limit the driven rod 222, so that the driven rod 222 can only move in the first direction x. The two ends of the driven rod 222 in the first direction x are limited by the drive rod 221 and the connecting seat 110, and the driven rod 222 is further limited in the circumferential direction by the first sleeve 211, so that the driven rod 222 cannot be pulled out of the first sleeve 211.

[0065] Optionally, the control mechanism 220 further comprises a first limiting piece 223, the first limiting piece 223 is connected with the drive rod 221 and located in the second section of the support sleeve 213. When the drive rod 221 moves away from the driven rod 222 until the first limiting piece 223 abuts against the profile surface of the second section of the support sleeve 213 towards the first section, the support sleeve 213 prevents the drive rod 221 from continuing to move away from the driven rod 222. Those skilled in the art can understand that, Figure 5 the white part inside the support sleeve 213 in the middle is the second section for accommodating the first limiting piece 223.

[0066] Specifically, the first limiting piece 223 is a sleeve sleeved on the drive rod 221 and connected with the drive rod 221. The outer circumferential surface of the first limiting piece 223 has a diameter smaller than that of the second section, and the outer circumferential surface of the first limiting piece 223 has a diameter larger than that of the first section. So that the first limiting piece 223 can move up and down in the second section along the first direction x with the drive rod 221, and cannot be pulled out of the second section, thereby making the drive rod 221 also move up and down relative to the support sleeve 213 along the first direction x and cannot be separated from the support sleeve 213.

[0067] In other embodiments, the first limiting piece 223 can also be a limiting block, a limiting ring or other structure fixedly installed on the outer circumferential surface of the drive rod 221, as long as it can realize the function of abutting against the support sleeve 213 to prevent the drive rod 221 from being separated from the support sleeve 213 when the drive rod 221 moves to the limit position.

[0068] The housing corner mirror device 10 of the present application is provided with the support sleeve 213, which is fixedly connected with the first sleeve 211 and threadedly connected with the driving rod 221, so that the driving rod 221 can move along the first direction x and approach or move away from the driven rod 222 when the driving rod 221 rotates relative to the support sleeve 213. When the driving rod 221 approaches the driven rod 222 and abuts against the driven rod 222, the driving rod 221 can drive the driven rod 222 to approach the connecting seat 110, and when the driven rod 222 abuts against the profile surface of the clamping groove 112, the control mechanism 220 is in the locked state, and the handle assembly 200 and the lens assembly 100 are fixed in position. When the driving rod 221 reversely rotates relative to the support sleeve 213, the driving rod 221 moves away from the driven rod 222 and switches the control mechanism 220 to the unlocked state. The accommodation hole 2132 includes first and second segments with different diameters, and the control mechanism 220 further includes the first limiting member 223 located in the second segment, so that the driving rod 221 can only move up and down along the first direction x relative to the support sleeve 213 and cannot be separated from the support sleeve 213.

[0069] In some optional embodiments, the control mechanism 220 further includes the first elastic member 224, which is arranged inside the axis of the first limiting member 223 and abuts against the driven rod 222. The first elastic member 224 is used to apply a force to the driven rod 222 to approach the connecting seat 110. Optionally, the first elastic member 224 is a spring, one end of which abuts against the driving rod 221 and the other end of which abuts against the driven rod 222.

[0070] Optionally, the driving rod 221 is provided with a recessed accommodation cavity 2212 at the distal end thereof, and at least part of the first elastic member 224 extends into the accommodation cavity 2212 and abuts against the profile surface of the accommodation cavity 2212. The accommodation cavity 2212 ensures that the first elastic member 224 will not be circumferentially displaced when compressed or stretched along the first direction x when the driving rod 221 moves up and down along the first direction x relative to the support sleeve 213. Alternatively, in other optional embodiments, the driven rod 222 is provided with a recessed accommodation cavity 2212 at the end thereof facing the driving rod 221, which is used to accommodate part of the first elastic member 224.

[0071] In the embodiment, the driving rod 221 and the driven rod 222 are connected with the support sleeve 213 through screwing, the first limiting member 223 and the first elastic member 224 are arranged between the driving rod 221 and the driven rod 222, in the locking state, the first elastic member 224 is in the compressed state, the driving rod 221 drives the driven rod 222, the distal end of the driven rod 222 abuts against the clamping groove 112 of the reinforcing part 116 of the connecting seat 110, so that the driven rod 222 is locked and cannot rotate in the track groove 111. In the unlocking state, the first elastic member 224 is in the stretched state, the driving rod 221 drives the driven rod 222 to move away from the connecting seat 110, and the distal end of the driven rod 222 no longer abuts against the clamping groove 112 of the connecting seat 110. However, due to the existence of the first connecting part 2111 of the first sleeve 211, the driven rod 222 and the connecting seat 110 are only separated from abutting against each other but not necessarily separated, so that the driven rod 222 and the first connecting part 2111 can rotate in the track groove 111, thereby adjusting the operation angle.

[0072] The goniolens device 10 of the present application, by making the control mechanism 220 further include the first elastic member 224, and the first elastic member 224 is used to apply a force to the driven rod 222 to move close to the connecting seat 110, so that even if the control mechanism 220 is in the unlocking state, the driven rod 222 is still attached to the surface of the connecting seat 110 under the action of the first elastic member 224, and a certain force needs to be applied to the connecting seat 110 to cause relative rotation between the connecting seat 110 and the driven rod 222, thereby avoiding the lens assembly 100 and the handle assembly 200 from rotating beyond the expected angle due to the influence of gravity and other factors when the control mechanism 220 is in the unlocking state.

[0073] The connecting mechanism 210 further includes the fixing member 212, which is used to fix the first connecting part 2111 in the track groove 111 when the first connecting part 2111 of the first sleeve 211 is located behind the track groove 111.

[0074] The relative positions of the driving rod 221 and the driven rod 222 are limited by the support sleeve 213, so that the distance between them is limited in a limited range by the length and elastic modulus of the first elastic member 224. In the locking state, the end of the driven rod 222 is driven to extend into the clamping groove 112 of the connecting seat 110, and the first connecting part 2111 cannot move in the track groove 111, achieving the limiting effect. In the unlocking state, the end of the driven rod 222 is driven to extend out of the clamping groove 112, and the first connecting part 2111 can move in the track groove 111, facilitating the adjustment of the operation angle.

[0075] Please refer to Figures 7 to 11 , Figure 7 An exploded structural schematic view of another example of a goniolens device is shown; Figure 8 An exploded sectional structural schematic view of another example of a goniolens device is shown;Figure 9 Fig. 1 shows a perspective view of a goniolens device according to an example of the present disclosure; Figure 8 Fig. 2 shows a front view of the goniolens device of Fig. 1 with the support sleeve, the first sleeve and the lens assembly hidden; Figure 10 Fig. 3 shows a perspective view of a goniolens device according to another example of the present disclosure; Figure 8 Fig. 4 shows a front view of the goniolens device of Fig. 3 with the support sleeve, the first sleeve and the lens assembly hidden; Figure 11 Fig. 5 shows a perspective view of a goniolens device according to yet another example of the present disclosure; Figure 8 Fig. 6 shows a front view of the goniolens device of Fig. 5 with the support sleeve, the first sleeve and the lens assembly hidden; Figure 9 Fig. 7 shows the goniolens device of Fig. 5 in an unlocked state; Figure 10 Fig. 8 shows the goniolens device of Fig. 5 in a locked state; Figure 11 Fig. 9 shows the goniolens device of Fig. 5 in an end node of a first intermediate state;

[0076] Fig. 10 shows a perspective view of a goniolens device according to another example of the present disclosure; Figures 7 to 11 In another example, the connecting mechanism 210 further comprises a limiting sleeve 214 which is sleeved on the driving rod 221a. The sleeve wall of the limiting sleeve 214 is provided with a first limiting slot 2141 and a second limiting slot 2142 which are in the form of a long strip and a sawtooth, respectively, and which extend along the axial direction of the limiting sleeve 214. The axial length of the first limiting slot 2141 is greater than that of the second limiting slot 2142, and the second limiting slot 2142 is arranged on the end face of the sleeve wall between adjacent first limiting slots 2141.

[0077] The end face of the driven rod 222a towards the driving rod 221a is provided with a limiting tooth 2221. In a direction perpendicular to the first direction x, the width of the limiting tooth 2221 is less than or equal to the width of the first limiting slot 2141. Thus, the limiting tooth 2221 can enter the first limiting slot 2141. In the unlocked state, at least part of the limiting tooth 2221 is located in the first limiting slot 2141 and abuts against the profile surface of the first limiting slot 2141. In the locked state, at least part of the limiting tooth 2221 is located in the second limiting slot 2142 and engages and abuts against the profile surface of the second limiting slot 2142.

[0078] Optionally, the end face of the limiting tooth 2221 of the driven rod 222a towards the driving rod 221a is provided with an inclined surface which forms an acute angle with the first direction x, and the end face of the second limiting slot 2142 towards the driven rod 222a is provided with a toothed structure which matches the inclined surface of the limiting tooth 2221. In the unlocked state, at least part of the limiting tooth 2221 can smoothly slide along the inclined surface of the second limiting slot 2142 until it is engaged in the toothed structure of the second limiting slot 2142.

[0079] In the direction perpendicular to the first direction x, the inner diameter of the limiting tooth 2221 of the driven rod 222a is the same as the inner diameter of the driving rod 221a, and the outer diameter of the limiting tooth 2221 is larger than the minimum outer diameter of the driving rod 221a (i.e., the part excluding the second limiting member 2214). Optionally, the outer diameter of the limiting tooth 2221 is the same as the outer diameter of the limiting sleeve 214. With this dimensional design, the limiting tooth 2221 can mesh with the driving tooth 2213 of the driving rod 221a and the second limiting groove 2142 of the limiting sleeve 214, respectively.

[0080] Optionally, the support sleeve 213a is sleeved outside the limiting sleeve 214 and fixedly connected to the limiting sleeve 214. The connecting mechanism 210 also includes a second sleeve 215 connecting the support sleeve 213a and the first sleeve 211a. The first sleeve 211a, the second sleeve 215 and the support sleeve 213a are arranged sequentially along the first direction x, and both the first sleeve 211a and the second sleeve 215 are sleeved outside the driven rod 222a.

[0081] Optionally, the end face of the drive rod 221a facing the driven rod 222a is provided with a drive tooth 2213. The control mechanism 220 also includes a first intermediate state, a second intermediate state, and a third intermediate state. In the first intermediate state, the drive rod 221a moves toward the driven rod 222a, and through the abutting drive tooth 2213 and the limiting tooth 2221, it drives the driven rod 222a closer to the connecting seat 110 until the limiting tooth 2221 leaves the first limiting groove 2141. In the second intermediate state, the drive rod 221a continues to move toward the driven rod 222a, and the limiting tooth 2221 is squeezed by the drive tooth 2213 and drives the driven rod 222a to rotate axially. In the third intermediate state, the drive rod 221a moves away from the driven rod 222a, and the driven rod 222a moves closer to the limiting sleeve 214 until the control mechanism 220 switches to the locked state.

[0082] The driving tooth 2213 includes an inclined surface at an acute angle to the first direction x. The inclined surface of the driving tooth 2213 matches the inclined surface of the limiting tooth 2221, so that when the driving tooth 2213 and the limiting tooth 2221 press against each other, the driving tooth 2213 applies a component force to the limiting tooth 2221, causing it to rotate axially around the driven rod 222a. In the first intermediate state, because the limiting tooth 2221 is located within the first limiting groove 2141 and is limited by the first limiting groove 2141, the limiting tooth 2221 cannot rotate and can only be driven by the driving tooth 2213 to move along the first direction x. In the second intermediate state, because the limiting tooth 2221 has left the first limiting groove 2141, without the limiting effect of the first limiting groove 2141, the limiting tooth 2221, pressed by the driving tooth 2213, will cause the driven rod 222a to rotate axially.

[0083] The anterior chamber corner mirror device 10 of this application, by setting a first limiting groove 2141 and a second limiting groove 2142 with different lengths on the support sleeve 213, when the driven rod 222a abuts against the contour surfaces of the first limiting groove 2141 and the second limiting groove 2142 respectively, the length of the driven rod 222a extending out of the first sleeve 211a is also different, thereby realizing that the driven rod 222a abuts against and separates from the connecting seat 110 in the locked state and the unlocked state respectively.

[0084] In some alternative embodiments, such as Figure 7 and Figure 8 As shown, a second limiting member 2214 is provided on the outer circumferential surface of the drive rod 221a. In the direction perpendicular to the first direction x, the maximum outer diameter of the second limiting member 2214 is equal to the maximum outer diameter of the limiting tooth 2221 of the driven rod 222a, and less than or equal to the maximum outer diameter of the first limiting groove 2141 of the limiting sleeve 214. At least a portion of the second limiting member 2214 remains within the first limiting groove 2141 during operation, and can slide within the first limiting groove 2141 following the drive rod 221a when it moves along the first direction x. Through the second limiting member 2214, the drive rod 221a slides only along the first direction x during operation without generating circumferential displacement, thereby ensuring that the drive tooth 2213 at the end of the drive rod 221a does not generate circumferential displacement.

[0085] Optionally, the second limiting member 2214 is a limiting block extending along the first direction x. The second limiting member 2214 is used to ensure that the drive rod 221a can only move up and down relative to the limiting sleeve 214 along the first direction x, but cannot rotate relative to the limiting sleeve 214.

[0086] Therefore, the second limiting member 2214 of the drive rod 221a slides axially only within the first limiting groove 2141 of the limiting sleeve 214, so that the drive tooth 2213 of the drive rod 221a only moves axially and does not produce circumferential displacement. The limiting tooth 2221 of the driven rod 222a can produce both axial and circumferential displacement, resulting in engagement and disengagement between the limiting tooth 2221 and the second limiting groove 2142, and between the limiting tooth 2221 and the drive tooth 2213.

[0087] In some optional embodiments, the maximum outer diameter of the limiting tooth 2221 of the driven rod 222a is larger than the portion of the driven rod 222a adjacent to the limiting tooth 2221, but smaller than the inner diameter of the support sleeve 213a. The support sleeve 213a is used to be installed on the outside of the limiting sleeve 214 and the limiting tooth 2221 of the driven rod 222a. The control mechanism 220 also includes a second elastic element 225, the outer diameter of which is smaller than the outer diameter of the limiting tooth 2221 and smaller than the inner diameter of the support sleeve 213a, but larger than the inner diameter of the second sleeve 215. The second elastic element 225 is sleeved on the driven rod 222a below the limiting tooth 2221 and abuts against the distal end of the limiting tooth 2221. The second sleeve 215 is sleeved on the distal end of the driven rod 222a. The two ends of the second elastic element 225 abut against the distal end of the limiting tooth 2221 and the second sleeve 215, respectively, and are sleeved inside the support sleeve 213a, so as not to generate circumferential displacement while extending or compressing axially. The second elastic element 225 is used to apply a force to the driven rod 222a to move closer to the limiting sleeve 214.

[0088] Optionally, the second elastic element 225 is a spring, with one end of the second elastic element 225 abutting against the driven rod 222a and the other end abutting against the proximal end face of the second sleeve 215.

[0089] The gonioscope device 10 of this application, by setting a second elastic element 225, allows the control mechanism 220 to move closer to the limiting sleeve 214 under the action of the second elastic element 225 after the driven rod 222a loses the force of the driving rod 221a when it is in the third intermediate state, until the control mechanism 220 switches to the locked state.

[0090] In some optional embodiments, a plurality of drive teeth 2213 are arranged around the axis of the drive rod 221a at the distal end of the drive rod 221a, a plurality of limiting teeth 2221 are arranged around the axis of the driven rod 222a at the proximal end of the driven rod 222a, and a plurality of first limiting grooves 2141 and second limiting grooves 2142 are alternately arranged around the axis of the limiting sleeve 214.

[0091] Optionally, the contour surface of the second limiting groove 2142 includes an inclined surface that forms an acute angle with the first direction x. When the driven rod 222a approaches the limiting sleeve 214 under the action of the second elastic member 225, the inclined surface on the second limiting groove 2142 abuts against the limiting tooth 2221 and guides the driven rod 222a to continue rotating along its axial direction until the limiting tooth 2221 engages with the contour surface of the second limiting groove 2142. At this time, the control mechanism 220 is in a locked state.

[0092] Afterwards, the operator can press the drive lever 221a multiple times to bring it close to the driven lever 222a along the first direction x. The driven lever 222a rotates around its axis in the circumferential direction, thereby switching back and forth between the locked and unlocked states.

[0093] The gonioscope device 10 of this application, by having multiple drive teeth 2213 arranged around the axis of the drive rod 221a, multiple limiting teeth 2221 arranged around the axis of the driven rod 222a, and multiple first limiting grooves 2141 and second limiting grooves 2142 alternately arranged around the axis of the limiting sleeve 214, allows the operator to press the drive rod 221a multiple times and switch the control mechanism 220 back and forth between the locked and unlocked states.

[0094] In this embodiment, the drive rod 221a, driven rod 222a, and limiting sleeve 214 engage with each other via toothed meshing to achieve the contact and separation of the spherical end of the driven rod 222a from the slot 112 of the connecting seat 110. The second elastic element 225 and the second sleeve 215 are respectively sleeved on the driven rod 222a. The second elastic element 225 is disposed within the supporting sleeve 213a and abuts against the second sleeve 215. In the locked state, the control mechanism 220 has the second elastic element 225 in a compressed state. The drive rod 221a drives the driven rod 222a, causing the distal end of the driven rod 222a to abut against the slot 112 of the connecting seat 110, thereby locking the driven rod 222a and preventing it from rotating within the track groove 111. In the unlocked state, the second elastic element 225 is in an extended state, and the distal end of the driven rod 222a no longer abuts against the slot 112 of the connecting seat 110. Due to the presence of the first connecting part of the first sleeve 211a, the driven rod 222a and the connecting seat 110 are only disengaged from each other but not necessarily separated, allowing the driven rod 222a and the first connecting part 2111 to rotate within the track, thereby adjusting the application angle.

[0095] The relative positions of the driving rod 221 and the driven rod 222 are limited by the limiting sleeve 214, the limiting tooth 2221, the driving tooth 2213, the second sleeve 215, the first sleeve 211a, and the supporting sleeve 213, so that the distance between them is limited within a finite area by the length and elastic modulus of the second elastic element 225. In the locked state, the end of the driven rod 222a is driven to extend into the slot 112 of the connecting seat 110, and the first connecting part 2111 cannot move within the track groove 111, thus achieving the limiting effect. In the unlocked state, the end of the driven rod 222 is driven to extend out of the slot 112, and the first connecting part 2111 can move within the track groove 111, facilitating the adjustment of the application angle.

[0096] The above description is merely a specific embodiment of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A gonioscope device, characterized in that, include: A lens assembly includes a connector and a lens, the connector supporting the lens, the lens having an axial direction; A handle assembly extending along a first direction includes a connecting mechanism and a control mechanism interconnected thereto. The connecting mechanism is rotatably connected to the connecting seat, and the control mechanism has a locked state and an unlocked state. The control mechanism includes a drive rod and a driven rod. In the locked state, the drive rod drives the driven rod to engage with the connecting seat, so that the driven rod and the connecting seat are relatively fixed in position. In the unlocked state, the drive rod separates from the driven rod, and / or the driven rod separates from the connecting seat, so that the driven rod can rotate circumferentially relative to the connecting seat.

2. The gonioscope device according to claim 1, characterized in that, The connecting seat is provided with multiple slots. In the locked state, at least part of the distal end of the driven rod is located in any one of the slots and engages with the contour surface of the slot.

3. The gonioscope device according to claim 1, characterized in that, The connecting seat is provided with a track groove, which extends circumferentially along the lens and surrounds at least a portion of the lens; The connecting mechanism includes a first sleeve, which is sleeved on the driven rod and the driving rod. The first sleeve is provided with a first connecting part, at least a portion of which is located in the track groove and can slide along the track groove. The connecting mechanism also includes a fixing member for fixing the first connecting part of the first sleeve in the track groove.

4. The gonioscope device according to claim 3, characterized in that, The lens has an axis perpendicular to the connecting seat, and a first columnar side surface and a second columnar side surface are arranged sequentially from bottom to top along the extension direction of the axis. The radius of the second columnar side surface relative to the axis is greater than the radius of the first columnar side surface relative to the axis. The connecting seat includes a fitting part and a reinforcing part. The fitting part fits against the first columnar side surface and matches the shape of the first columnar side surface. The two ends of the reinforcing part are fixedly connected to the fitting part, and a portion of the reinforcing part is spaced apart from the fitting part to form the track groove between the fitting part and the reinforcing part.

5. The gonioscope device according to claim 4, characterized in that, The lens includes a lower surface and an upper surface disposed opposite each other along the extension direction of the axis. The lower surface is concave towards the upper surface, and the upper surface protrudes away from the lower surface as a spherical portion. Both the upper and lower surfaces are inclined towards the plane of the reinforcing portion. The lower surface intersects the first columnar side surface, and the angle between the tangent of the lower surface and the tangent of the first columnar side surface is 45° to 75°. The center of the sphere of the upper surface is located on the side of the control mechanism facing the lower surface and away from the first columnar side surface; and... The lens has a beveled structure on the side away from the handle assembly, and the beveled structure is inclined from the upper surface to the lower surface toward the axis.

6. The gonioscope device according to any one of claims 1 to 5, characterized in that, The connecting mechanism includes a support sleeve, which is sleeved on the drive rod and / or the driven rod. The outer peripheral surface of the distal end of the drive rod is provided with an external thread, and the inner peripheral surface of the proximal end of the support sleeve is provided with an internal thread that matches the external thread. When the drive rod rotates relative to the support sleeve, the drive rod moves closer to or further away from the driven rod, thereby causing the control mechanism to switch between the locked state and the unlocked state.

7. The gonioscope device according to claim 6, characterized in that, The support sleeve is provided with a receiving hole that penetrates the support sleeve. The receiving hole includes a first segment and a second segment arranged sequentially from the distal end to the proximal end. The first segment is located close to the drive rod, and the internal thread is located on the contour surface of the first segment. The second segment is located close to the first segment, and its diameter is larger than that of the first segment. The control mechanism further includes a first limiting member, which is connected to the drive rod and is located within the second segment. When the drive rod moves away from the driven rod until the first limiting member abuts against the contour surface of the second segment facing the first segment, the support sleeve prevents the drive rod from moving further away from the driven rod.

8. The gonioscope device according to claim 7, characterized in that, The first limiting member is a sleeve sleeved outside the driving rod and connected to the driving rod. The outer circumferential diameter of the first limiting member is smaller than the diameter of the second segment, and the outer circumferential diameter of the first limiting member is larger than the diameter of the first segment.

9. The gonioscope device according to claim 7, characterized in that, The control mechanism further includes a first elastic element disposed axially inside the first limiting element, for applying a force to the driven rod to move closer to the connecting seat; The drive rod has a recessed receiving cavity at one end facing the driven rod, at least a portion of the first elastic element extends into the receiving cavity and abuts against the contour surface of the receiving cavity, and the other end of the first elastic element abuts against the driven rod; or, the driven rod has a recessed receiving cavity at one end facing the drive rod, at least a portion of the first elastic element extends into the receiving cavity and abuts against the contour surface of the receiving cavity, and the other end of the first elastic element abuts against the drive rod.

10. The gonioscope device according to any one of claims 1-5, characterized in that, The connecting mechanism includes a limiting sleeve, which is sleeved outside the driving rod. The sleeve wall of the limiting sleeve has a long strip-shaped first limiting groove and a serrated second limiting groove extending along the axial direction of the limiting sleeve at one end facing the driven rod. The axial length of the first limiting groove is greater than the length of the second limiting groove, and the second limiting groove is disposed on the end face of the sleeve wall between adjacent first limiting grooves. The driven rod has a limiting tooth on its end face facing the driving rod. In a direction perpendicular to the first direction, the width of the limiting tooth is less than or equal to the width of the first limiting groove. In the unlocked state, at least a portion of the limiting tooth is located in the first limiting groove and abuts against the contour surface of the first limiting groove. In the locked state, at least a portion of the limiting tooth is located in the second limiting groove and engages with the contour surface of the second limiting groove.

11. The gonioscope device according to claim 10, characterized in that, The end face of the limiting tooth facing the drive rod has an inclined surface at an acute angle to the first direction, and the end face of the second limiting groove facing the driven rod has a tooth-like structure that matches the inclined surface of the limiting tooth; and / or, In a direction perpendicular to the first direction, the inner diameter of the limiting tooth is the same as the inner diameter of the driving rod, the outer diameter of the limiting tooth is greater than the minimum outer diameter of the driving rod, and the outer diameter of the limiting tooth is the same as the outer diameter of the limiting sleeve.

12. The gonioscope device according to claim 11, characterized in that, The end face of the drive rod facing the driven rod is provided with drive teeth; The control mechanism further includes a first intermediate state, a second intermediate state, and a third intermediate state. In the first intermediate state, the drive rod moves toward the driven rod and drives the driven rod toward the connecting seat through the abutting drive teeth and limiting teeth until the limiting teeth leave the first limiting groove. In the second intermediate state, the drive rod continues to move toward the driven rod, and the limiting teeth are squeezed by the drive teeth and drive the driven rod to rotate along its axial direction. In the third intermediate state, the drive rod moves away from the driven rod, and the driven rod moves toward the limiting sleeve until the control mechanism switches to the locking state.

13. The gonioscope device according to claim 12, characterized in that, The drive tooth includes an inclined surface at an acute angle to the first direction, and the inclined surface of the drive tooth matches the inclined surface of the limiting tooth.

14. The gonioscope device according to claim 11, characterized in that, The maximum outer diameter of the limiting tooth of the driven rod is greater than the outer diameter of the driven rod portion adjacent to the limiting tooth; The control mechanism further includes a second elastic element, which is sleeved on the driven rod below the limiting tooth and abuts against the distal end of the limiting tooth. The second elastic element is used to apply a force to the driven rod to move closer to the limiting sleeve.

15. The gonioscope device according to claim 14, characterized in that, The outer circumferential surface of the drive rod is provided with a second limiting member. In a direction perpendicular to the first direction, the maximum outer diameter of the second limiting member is equal to the maximum outer diameter of the limiting tooth and is less than or equal to the maximum outer diameter of the first limiting groove. At least a portion of the second limiting member is located in the first limiting groove during operation and can slide in the first limiting groove when moving with the drive rod.

16. The gonioscope device according to claim 15, characterized in that, Along the first direction, the connecting mechanism sequentially includes a support sleeve and a second sleeve. The outer diameter of the limiting tooth is the same as the outer diameter of the limiting sleeve. The supporting sleeve is sleeved on the outside of the limiting sleeve and the limiting tooth, and is fixedly connected to the limiting sleeve. The second sleeve is sleeved on the outside of the driven rod. The two ends of the second elastic member abut against the far end of the limiting tooth and the near end face of the second sleeve, respectively.

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