Room angle mirror device

Abstract

A lens assembly comprises a connecting seat and a lens, the connecting seat is used for supporting the lens, a handle assembly extends in a first direction and comprises a connecting mechanism and a control mechanism which are connected with each other, the connecting mechanism is rotatably connected with the connecting seat, the control mechanism has a locking state and an unlocking state, the control mechanism comprises a driving rod and a driven rod, and in the locking state, the driving rod drives the driven rod to abut against the connecting base in a clamped mode, so that the positions of the driven rod and the connecting base are 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 base so that the driven rod can rotate relative to the circumferential direction of the connecting base. According to the room angle mirror device, the handle assembly comprises the connecting mechanism, the connecting mechanism is rotationally connected with the lens assembly, the handle assembly can rotate relative to the lens assembly through the connecting mechanism, then the function of adjusting the angle formed between the handle assembly and the lens assembly is achieved, and the operation convenience of the room angle mirror device is improved.

Description

Technical Field

[0001] The present application belongs to the field of medical device technology, and in particular to a gonioscopic device. Background Art

[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 anterior chamber angle is the main pathway for aqueous humor outflow. Lesions in the angle and resulting obstruction of the aqueous humor outflow will lead to increased intraocular pressure and the occurrence of glaucoma. Current surgical treatments for glaucoma patients focus on precise observation of these subtle structures in the angle area, and increase the outflow of aqueous humor through surgery. However, due to the special structure of the eyeball, light will be totally reflected from the corneal surface, making the anterior chamber angle area unable to be directly observed.

[0003] Currently, medical professionals generally use gonioscopes to assist in observing the anterior chamber angle area of ​​patients. Gonioscopes provide ophthalmologists with an angled field of view through the cornea, enabling visualization of the peripheral portion of the anterior chamber. However, the prior art gonioscopes use a simple handle with a fixed handle direction, and cannot conveniently adjust the angle between the handle direction and the angle lens orientation. Summary of the invention

[0004] The embodiment of the present application provides a gonioscopic device, which is intended to be able to adjust the angle between a handle assembly and a lens assembly.

[0005] An embodiment of the first aspect of the present application provides a gonioscopic device, comprising a lens assembly and a handle assembly, wherein the lens assembly comprises a connecting seat and a lens, wherein the connecting seat is used to support the lens, and the lens has an axial direction, and the handle assembly extends along a first direction, and comprises a connecting mechanism and a control mechanism that are connected to each other, wherein the connecting mechanism is rotatably connected to the connecting seat, and the control mechanism has a locked state and an unlocked state, wherein the control mechanism comprises a driving rod and a driven rod, wherein in the locked state, the driving rod drives the driven rod to engage and abut with the connecting seat so that the positions of the driven rod and the connecting seat are relatively fixed; 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 driven rod can rotate circumferentially relative to the connecting seat.

[0006] According to the implementation of the first aspect of the present application, a plurality of slots are provided 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 slots and is engaged and abutted with the contour surface of the slot.

[0007] According to the implementation scheme of the first aspect of the present application, a track groove is provided on the connecting seat, which extends along the circumference of the lens and surrounds at least part of the lens; the connecting mechanism includes a first sleeve, which is sleeved outside the driven rod and an optional driving rod, and a first connecting portion is provided on the first sleeve, at least part of the first connecting portion 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 portion of the first sleeve in the track groove.

[0008] According to the implementation scheme of the first aspect of the present application, the lens has an axis perpendicular to the connecting seat, and a first columnar side and a second columnar side are arranged in sequence from bottom to top along the extension direction of the axis, and the radius of the second columnar side relative to the axis is greater than the radius of the first columnar side relative to the axis; the connecting seat includes a fitting portion and a reinforcement portion, the fitting portion is fitted with the first columnar side and matches the shape of the first columnar side; both ends of the reinforcement portion are fixedly connected to the fitting portion, and part of the reinforcement portion is spaced apart from the fitting portion to form a track groove between the fitting portion and the reinforcement portion.

[0009] According to an implementation scheme of the first aspect of the present application, the lens includes a lower surface and an upper surface that are relatively arranged in the extension direction of the axis, the lower surface is recessed toward the upper surface, and the upper surface is convex away from the lower surface as a part of a sphere, both the upper surface and the lower surface are inclined toward the plane where the reinforcement portion is located, the lower surface intersects with 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°, and the center 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 optionally, a bevel structure is provided on the side of the lens away from the handle assembly, and the bevel structure is inclined from the upper surface to the lower surface toward the axis.

[0010] According to the implementation scheme of the first aspect of the present application, the connecting mechanism includes a supporting sleeve, which is sleeved outside the driving rod and / or the driven rod; the distal outer circumference of the driving rod is provided with an external thread, and the proximal inner circumference of the supporting sleeve is provided with an internal thread matching the external thread. When the driving rod rotates relative to the supporting sleeve, the driving rod approaches or moves away from the driven rod, thereby switching the control mechanism between a locked state and an unlocked state.

[0011] According to an implementation scheme of the first aspect of the present application, a receiving hole penetrating the supporting sleeve is provided on the supporting sleeve, and the receiving hole includes a first section and a second section arranged in sequence from the distal end to the proximal end, the first section is arranged close to the driving rod, and the internal thread is located on the contour surface of the first section, and the second section is arranged close to the first section, and its diameter is larger than the diameter of the first section; the control mechanism also includes a first limit member, the first limit member is connected to the driving rod and the first limit member is located in the second section, when the driving rod moves in a direction away from the driven rod until the first limit member abuts against the contour surface of the second section toward the first section, the supporting sleeve prevents the driving rod from continuing to move away from the driven rod.

[0012] According to the implementation scheme of the first aspect of the present application, the first limiting member is a sleeve that is 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 section, and the outer circumferential diameter of the first limiting member is larger than the diameter of the first section.

[0013] According to an implementation scheme of the first aspect of the present application, the control mechanism also includes a first elastic member, which is arranged axially inside the first limit member, and is used to apply a force to the driven rod to approach the connecting seat; a recessed accommodating cavity is provided at one end of the driving rod toward the driven rod, at least part of the first elastic member extends into the accommodating cavity and abuts against the contour surface of the accommodating cavity, and the other end of the first elastic member abuts against the driven rod; or, a recessed accommodating cavity is provided at one end of the driven rod toward the driving rod, at least part of the first elastic member extends into the accommodating cavity and abuts against the contour surface of the accommodating cavity, and the other end of the first elastic member abuts against the driving rod.

[0014] According to the implementation scheme of the first aspect of the present application, the connecting mechanism includes a limiting sleeve, which is sleeved on the outside of the driving rod, and the sleeve wall of the limiting sleeve is provided with a first long limiting groove and a second serrated 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 arranged on the end face of the sleeve wall between adjacent first limiting grooves; a limiting tooth is provided on the end face of the driven rod facing the driving rod, and 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, and in an unlocked state, at least part of the limiting teeth is located in the first limiting groove and abuts against the contour surface of the first limiting groove; in a locked state, at least part of the limiting teeth is located in the second limiting groove and meshes and abuts against the contour surface of the second limiting groove.

[0015] According to the implementation scheme of the first aspect of the present application, the end face of the limiting tooth facing the driving rod is provided with an inclined surface forming an acute angle with the first direction, and the end face of the second limiting groove facing the driven rod is provided with a toothed structure matching 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 larger 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.

[0016] According to the implementation scheme of the first aspect of the present application, a driving tooth is provided on the end face of the driving rod facing the driven rod; the control mechanism also includes a first intermediate state, a second intermediate state and a third intermediate state. In the first intermediate state, the driving rod moves toward the driven rod, and drives the driven rod to approach the connecting seat through the abutting driving teeth and the limiting teeth until the limiting teeth leave the first limiting groove; in the second intermediate state, the driving rod continues to move toward the driven rod, the limiting teeth are squeezed by the driving teeth and drive the driven rod to rotate along its axial direction; 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 switches to a locked state.

[0017] According to an implementation of the first aspect of the present application, the driving tooth includes an inclined surface that forms 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 the implementation scheme of the first aspect of the present application, the maximum outer diameter of the limiting tooth of the driven rod is larger than the outer diameter of the driven rod portion adjacent to the limiting tooth; the control mechanism also includes 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 approach the limiting sleeve.

[0019] According to the implementation scheme of the first aspect of the present application, a second limiting member is provided on the outer peripheral surface of the driving rod, and in the 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 following the movement of the driving rod.

[0020] According to the implementation scheme of the first aspect of the present application, along the first direction, the connecting mechanism includes 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 outside of the limiting sleeve and the limiting tooth, and is fixedly connected to the limiting sleeve, and the second sleeve is sleeved outside the driven rod; the two ends of the second elastic member respectively abut the distal end of the limiting tooth and the proximal end surface of the second sleeve.

[0021] The gonioscopic device of the present application is provided with a handle assembly including a connecting mechanism, a lens assembly including a connecting seat and a lens, the connecting seat being used to support the lens, and the connecting mechanism of the handle assembly being rotatably connected to 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, thereby improving the convenience of operation of the gonioscopic device. The handle assembly is provided with a control mechanism including a driving rod and a driven rod, and the driven rod is driven by the driving rod to change the connection state between the driven rod and the connecting seat, so that the gonioscopic device has a locked state and an unlocked state, in which 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, and in the locked state, the driven rod is engaged with the connecting seat, so that the handle assembly is fixedly connected to the lens assembly, and at this time, no unexpected rotation occurs between the handle assembly and the lens assembly, thereby improving the safety of the use of the gonioscopic device during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] Figure 1 It is a front view structural schematic diagram of the gonioscopic device of some embodiments of the present application;

[0024] Figure 2 An example is shown Figure 1 A schematic cross-sectional view of a gonioscopic device;

[0025] Figure 3 A schematic diagram showing a top view of an exemplary lens assembly;

[0026] Figure 4 A schematic diagram showing a top view of an exemplary gonioscopic device;

[0027] Figure 5 A schematic diagram showing the exploded structure of an exemplary gonioscopic device;

[0028] Figure 6 A cross-sectional schematic diagram showing an exemplary gonioscopic device in another state;

[0029] Figure 7 A schematic diagram showing the exploded structure of another example gonioscopic device;

[0030] Figure 8 A schematic diagram showing the exploded anatomical structure of another example of a gonioscopic device;

[0031] Fig. 9 An example is shown Figure 8 One of the front view structural schematic diagrams of the gonioscopic device after hiding the support sleeve, the first sleeve and the lens assembly;

[0032] Fig.10 An example is shown Figure 8 The second schematic diagram of the front view structure of the gonioscopic device after hiding the support sleeve, the first sleeve and the lens assembly;

[0033] Fig.11 An example is shown Figure 8 The third schematic diagram of the front view structure of the gonioscopic device after hiding the support sleeve, the first sleeve and the lens assembly.

[0034] Reference numerals:

[0035] 10. Gonioscope device;

[0036] 100, lens assembly; 110, connection seat; 111, track groove; 112, card slot; 114, fitting part; 115, axis; 116, reinforcement part; 120, lens; 121, lower surface; 122, upper surface; 125, first columnar side surface; 126, chamfered structure; 128, second columnar side surface;

[0037] 200, handle assembly; 210, connecting mechanism; 211, first sleeve; 2111, first connecting portion; 212, fixing member; 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 member; 222, driven rod; 2221, limiting tooth; 223, first limiting member; 224, first elastic member; 225, second elastic member;

[0038] x, first direction. DETAILED DESCRIPTION

[0039] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, 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 technology, the applicant provides a gonioscopic device, including a lens assembly and a handle assembly, the handle assembly including a connecting mechanism and a control mechanism that are interconnected, the connecting mechanism is rotatably connected to the lens assembly, the control mechanism has a locked state and an unlocked state, in the locked state, the handle assembly is fixedly connected to the lens assembly, in the unlocked state, the handle assembly can rotate relative to the lens assembly.

[0042] The gonioscopic device of the present application is provided with a handle assembly including a connecting mechanism, and the connecting mechanism is rotatably connected to the lens assembly, so that the handle assembly can rotate relative to the lens assembly through the connecting mechanism, thereby realizing the function of adjusting the angle between the handle assembly and the lens assembly, thereby improving the convenience of operation of the gonioscopic device. The handle assembly is provided with a control mechanism, and the control mechanism has a locked state and an unlocked state. In the unlocked state, the handle assembly can rotate relative to the lens assembly, and in the locked state, the handle assembly is fixedly connected to the lens assembly, and at this time, the handle assembly and the lens assembly will not rotate unexpectedly, thereby improving the safety of the use of the gonioscopic device during surgery.

[0043] The gonioscopic device provided by the embodiment of the present application is introduced below in conjunction with the accompanying drawings. In the accompanying drawings, for the convenience of drawing, the dimensions in the drawings are not necessarily proportional to the actual dimensions.

[0044] Please refer to Figures 1 to 3 , Figure 1 It is a front view structural schematic diagram of the gonioscopic device of some embodiments of the present application; Figure 2 An example is shown Figure 1 A schematic cross-sectional view of a gonioscopic device; Figure 3 A schematic diagram showing a top view of an exemplary lens assembly; Figure 4 A schematic diagram showing a top view of an exemplary gonioscopic device; Figure 5 FIG. 1 is a schematic diagram of the exploded structure of an exemplary gonioscopic device. In order to better illustrate the structure, Figure 4 The connection seat position in the figure is partially perspective.

[0045] like Figures 1 to 5 As shown, the present application provides a gonioscopic device 10, including a lens assembly 100 and a handle assembly 200, wherein the lens assembly 100 includes a connection seat 110 and a lens 120, wherein the connection seat 110 is used to support the lens 120 and connect the handle assembly 200; the handle assembly 200 includes a connecting mechanism 210 and a control mechanism 220 connected to each other, wherein the connecting mechanism 210 is rotatably connected to the connection seat 110. The control mechanism includes a driving rod 221 and a driven rod 222, wherein in the locked state, the driving rod 221 drives the driven rod 222 to engage with the connection seat 110 so that the driven rod 222 and the connection seat 110 are relatively fixed in position; 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 connection seat 110 so that the driven rod 222 can rotate relative to the circumferential direction of the connection seat 110.

[0046] The gonioscopic device 10 of the present application is configured such that the handle assembly 200 includes a connecting mechanism 210, and 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 to the connecting seat 110, so that the handle assembly 200 can rotate 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, thereby improving the operating convenience of the gonioscopic device 10. By making the handle assembly 200 also include a control mechanism 220, the control mechanism 220 includes a driving rod 221 and a driven rod 222. The driven rod 221 drives the driven rod 222, which can change the connection state between the driven rod 222 and the connecting seat 110, so that the gonioscopic 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 rotate relative to the lens assembly 100. In the locked state, the driven rod 222 is engaged and abutted against the connecting seat 110, so that the handle assembly 200 is fixedly connected to the lens assembly 100. At this time, no unexpected rotation will occur between the handle assembly 200 and the lens assembly 100, thereby improving the safety of the use of the gonioscopic device during surgery.

[0047] Optionally, the extension direction of the handle assembly 200 is defined as a first direction x, the lens 120 has an axis 115 perpendicular to the connection seat 110, and the first direction x forms an acute angle with the axis 115. Optionally, the lens 120 is provided with a lower surface 121 and an upper surface 122 in the extension direction of the axis 115, the lower surface 121 is a concave spherical surface for attaching to the patient's eyeball, and the upper surface 122 is a convex spherical surface, which can make the refracted light easier to be seen by the observer, thereby improving the observation effect of the gonioscopic device 10. Optionally, as Figure 1 and Figure 5 As shown, the lens 120 further includes a first cylindrical side surface 125 and a second cylindrical side surface 128 surrounding the axis 115. Relative to the axis 115, the radius of the second cylindrical side surface 128 is greater than the radius of the first cylindrical side surface 125, thereby forming a step at the junction of the two.

[0048] Optionally, the connection seat 110 is arranged around at least a portion of the lens 120, and a track groove 111 is also provided on the connection seat 110, and the track groove 111 extends along the arc direction and surrounds at least a portion of the lens. At least a portion of the connection 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 and the connection mechanism 210 slides along the extension direction of the track groove 111, the angle between the handle assembly 200 and the lens assembly 100 changes. Specifically, if Figure 1 , Figure 3 and Figure 4As shown, the connection seat 110 includes a fitting portion 114 and a reinforcement portion 116. The fitting portion 114 matches the shape of the first cylindrical side surface 125 along the axial extension direction, and is used to fit the first cylindrical side surface 125 of the lens 120; both ends of the reinforcement portion 116 are fixedly connected to the fitting portion 114, and part of the reinforcement portion 116 is spaced apart from the fitting portion 114, so as to form a track groove 111 between the fitting portion 114 and the reinforcement portion 116. For example, the extension path of the part of the reinforcement portion 116 spaced apart from the fitting portion 114 is arranged in parallel with the extension path of the fitting portion 114, that is, the part of the reinforcement portion 116 spaced apart from the fitting portion 114 is arranged at equal intervals from the fitting portion 114, 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 portion 114 is equal to the radius of the second cylindrical side surface 128, that is, after the fitting portion 114 is installed, it is flush with the second cylindrical side surface 128. The fitting portion 114 matches the shape of the first cylindrical side surface 125 along the extension direction of the axis 115 to increase the contact area between the fitting portion 114 and the lens 120 in the extension direction of the axis 115.

[0050] The upper surface 122 and the lower surface 121 of the lens 120 are both inclined toward the plane where the reinforcement portion 116 is located. The lower surface 121 intersects with the first cylindrical side surface 125. Preferably, at the intersection of the lower surface 121 and the first cylindrical side surface 125, the angle between the tangent of the lower surface 121 and the tangent of the first cylindrical side surface 125 is 45° to 75°; the center of the upper surface 122 is located on the side of the control mechanism 220 facing the lower surface 121 and away from the first cylindrical side surface 125.

[0051] Alternatively, if Figure 1 , Figure 5 and Figure 6 As shown, the lens 120 is generally cylindrical along the axis 115. In the assembled state, a bevel structure 126 is provided on the side of the lens 120 away from the handle assembly 200. The bevel structure 126 is inclined from the upper surface 122 to the lower surface 121 toward the axis 115. When the lower surface 121 fits 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 surgical operation is facilitated.

[0052] During the use of the gonioscopic device 10 of the present application, the operator first switches the control mechanism 220 to the unlocked state, and adjusts the angle between the handle assembly 200 and the lens assembly 100. After the adjustment is completed, the control mechanism 220 is switched to the locked state to fix the handle assembly 200 to the lens assembly 100. The operator then holds the handle assembly 200 and attaches the lower surface 121 of the lens 120 to the patient's eyeball, and observes the patient's angle region 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, on the connection seat 110, a plurality of slots 112 are provided on one side of the reinforcement portion 116 away from the fitting portion 114, and the plurality of slots 112 are arranged around the lens 120. In the locked state, the distal end of the driven rod 222 is located in any slot 112 and abuts against the contour surface of the slot 112.

[0055] Specifically, the shape of the distal end of the driven rod 222 toward the connecting seat 110 is spherical. When the distal end of the driven rod 222 extends into the slot 112, the spherical end of the driven rod 222 can expand the contact area with the slot 112, thereby increasing the friction between the driven rod 222 and the slot 112, thereby preventing the driven rod 222 from sliding laterally and improving the connection stability between the connecting seat 110 and the driven rod 222.

[0056] The gonioscope device 10 of the present application, by making the distal end of the driven rod 222 located in any one of the slots 112 and abutting against the contour surface of the slot 112 in the locked state, uses the friction between the driven rod 222 and the contour surface of the slot 112 to fix the position between the driven rod 222 and the connecting seat 110, thereby achieving a fixed connection between the handle assembly 200 and the lens assembly 100. By providing a plurality of slots 112 on the connecting seat 110, any one of the slots 112 can cooperate with the driven rod 222, so that there can be 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, please refer to the above, the connection seat 110 is further provided with a track groove 111, the track groove 111 extends along the circumference of the lens 120 and surrounds at least a portion of the lens 120, and the connection mechanism 210 includes a first sleeve 211, the first sleeve 211 is sleeved outside the driven rod 222 and the optional driving rod 221, and the distal end of the first sleeve 211 is provided with a first connecting portion 2111, and the first connecting portion 2111 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 the optional driving rod 221, and the first sleeve 211 can be sleeved outside the driving rod 221 while being sleeved outside the driven rod 222, or not sleeved outside the driving rod 221.

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

[0059] The gonioscope device 10 of the present application is provided with a fixing member 212 connected to the first connecting portion 2111, so that the first connecting portion 2111 can slide in the track groove 111 along the extension direction of the track groove 111, and will not be separated from the track groove 111. In other words, after assembly, the fixing member 212 is used to fix the first connecting portion 2111 to the card slot 112, and whether in the unlocked state or the locked state, it plays a role in preventing the first connecting portion 2111 from being separated from the track groove 111, and at the same time ensures that the first connecting portion 2111 slides along the track groove 111. In the locked state, the driven rod 222 abuts against the contour surface of the card slot 112.

[0060] Please refer to Figure 2 , Figure 5 and Figure 6 , Figure 6 FIG. 1 is a cross-sectional schematic diagram of an exemplary gonioscopic device in another state. Figure 2 The gonioscope device in the Figure 6 The gonioscope device in is unlocked. Figure 6 The gonioscopic device is only partially dissected, and Figure 6 The first sleeve and lens are both hidden.

[0061] like Figure 2 , Figure 5 and Figure 6 As shown, in some embodiments, the connection mechanism 210 further includes a support sleeve 213, which is sleeved outside the driving rod 221 and / or the driven rod 222. The distal outer circumference of the driving rod 221 is provided with an external thread 2211, and the proximal inner circumference of the support sleeve 213 is provided with an internal thread 2131 matching the external thread. When the driving rod 221 rotates relative to the support 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 support sleeve 213 is provided with a accommodating hole 2132 that passes through the support sleeve 213, and the accommodating hole 2132 includes a first section (not marked) and a second section (not marked) arranged in sequence from the distal end to the proximal end. The first section is arranged close to the driving rod 221, and the internal thread 2131 is located on the contour surface of the first section. The second section is arranged close to the first section, and its diameter is larger than the diameter of the first section.

[0063] Optionally, the receiving hole 2132 also includes a third section (not shown) located on the side of the second section away from the first section. The contour surface of the third section is also provided with threads, and the support sleeve 213 is partially sleeved outside the first sleeve 211 and connected to the first sleeve 211 through the threads on the third section. When the first sleeve 211 and the support sleeve 213 do not rotate relative to each other, the first sleeve 211 and the support sleeve 213 are fixedly connected and move synchronously. Those skilled in the art will understand that Figure 5 The black parts at both ends of the inner side of the support sleeve 213 are the internal threads.

[0064] During assembly, the first sleeve 211 is sleeved outside the driven rod 222 to limit the driven rod 222 so that the driven rod 222 can only move along the first direction x. The two ends of the driven rod 222 in the first direction x are limited by the driving rod 221 and the connecting seat 110 respectively, and are limited by the first sleeve 211 in the circumferential direction so that the driven rod 222 will not fall out of the first sleeve 211.

[0065] Optionally, the control mechanism 220 further includes a first stopper 223, which is connected to the driving rod 221 and is located in the second section of the support sleeve 213. When the driving rod 221 moves in a direction away from the driven rod 222 until the first stopper 223 abuts against the contour surface of the support sleeve 213 from the second section toward the first section, the support sleeve 213 prevents the driving rod 221 from continuing to move away from the driven rod 222. Those skilled in the art will understand that Figure 5 The white portion in the middle of the supporting sleeve 213 is used to accommodate the second section of the first limiting member 223 .

[0066] Specifically, the first stopper 223 is a sleeve sleeved outside the driving rod 221 and connected to the driving rod 221, and the outer diameter of the first stopper 223 is smaller than the diameter of the second section, and the outer diameter of the first stopper 223 is larger than the diameter of the first section. This allows the first stopper 223 to move up and down along the first direction x in the second section following the driving rod 221, but cannot be separated from the second section, and further allows the driving rod 221 to only move up and down along the first direction x relative to the support sleeve 213 but cannot be separated from the support sleeve 213.

[0067] In other embodiments, the first limit member 223 may also be a limit block, a limit ring or other structure fixedly mounted on the outer peripheral surface of the driving rod 221, as long as the first limit member 223 abuts against the support sleeve 213 to prevent the driving rod 221 from separating from the support sleeve 213 when the driving rod 221 moves to the extreme position.

[0068] The gonioscope device 10 of the present application is provided with a support sleeve 213, which is fixedly connected to the first sleeve 211 and is rotatably connected to the driving rod 221 through a thread, so that the driving rod 221 can move along the first direction x and approach or move away from the driven rod 222 when rotating relative to the support sleeve 213. When the driving rod 221 approaches the driven rod 222 and abuts against the driven rod 222, it can drive the driven rod 222 to approach the connecting seat 110 until the driven rod 222 abuts against the contour surface of the card slot 112, and the control mechanism 220 is in a locked state, and the handle assembly 200 and the lens assembly 100 are fixed in position. When the driving rod 221 rotates in the opposite direction relative to the support sleeve 213, the driving rod 221 moves away from the driven rod 222 and switches the control mechanism 220 to an unlocked state. By making the accommodating hole 2132 include a first section and a second section with different diameters, and making the control mechanism 220 also include a first limiter 223 located in the second section, the driving rod 221 can only move up and down along the first direction x relative to the supporting sleeve 213 and cannot be separated from the supporting sleeve 213.

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

[0070] Optionally, a recessed accommodating chamber 2212 is provided at the distal end of the driving rod 221 toward the driven rod 222, and at least a portion of the first elastic member 224 extends into the accommodating chamber 2212 and abuts against the contour surface of the accommodating chamber 2212. The provision of the accommodating chamber 2212 ensures that when the driving rod 221 moves up and down along the first direction x relative to the supporting sleeve 213, the first elastic member 224 is not displaced in the circumferential direction when it is compressed or stretched along the first direction x. Optionally, in other optional embodiments, a recessed accommodating chamber 2212 is provided at one end of the driven rod 222 toward the driving rod 221, for accommodating a portion of the first elastic member 224.

[0071] In this embodiment, the driving rod 221 and the driven rod 222 are connected by threads with the support sleeve 213, the first limiter 223 and the first elastic member 224 are arranged between the driving rod 221 and the driven rod 222, the control mechanism 220 is in the locked state, the first elastic member 224 is in the compressed state, the driving rod 221 drives the driven rod 222, so that the distal end of the driven rod 222 abuts against the slot 112 of the reinforcement portion 116 of the connecting seat 110, thereby locking the driven rod 222 so that it cannot rotate in the track groove 111. In the unlocked state, the first elastic member 224 is in the extended state, the driving rod 221 drives the driven rod 222 away from the connecting seat 110, and the distal end of the driven rod 222 no longer abuts against the slot 112 of the connecting seat 110. However, due to the existence of the first connecting portion 2111 of the first sleeve 211, the driven rod 222 and the connecting seat 110 are only disengaged from the abutment but not necessarily separated, so that the driven rod 222 and the first connecting portion 2111 can rotate in the track groove 111, thereby adjusting the operation angle.

[0072] The gonioscopic device 10 of the present application is configured such that the control mechanism 220 also includes a first elastic member 224, and the first elastic member 224 is used to apply a force to the driven rod 222 to move it closer to the connecting seat 110, so that even if the control mechanism 220 is in an unlocked state, the driven rod 222 is still attached to the surface of the connecting seat 110 due to the force of the first elastic member 224, and a certain force needs to be applied to the connecting seat 110 to enable relative rotation between the connecting seat 110 and the driven rod 222, thereby preventing the lens assembly 100 and the handle assembly 200 from unexpectedly rotating due to factors such as gravity when the control mechanism 220 is in an unlocked state.

[0073] The connecting mechanism 210 further includes a fixing member 212 for fixing the first connecting portion 2111 in the track groove 111 when the first connecting portion 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 supporting sleeve 213, so that the distance between the two is limited within a limited area by the length and elastic modulus of the first elastic member 224. In the locked state, the end of the driven rod 222 is driven to extend into the slot 112 of the connecting seat 110, and the first connecting portion 2111 cannot move in the track slot 111, thereby achieving a 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 portion 2111 can move in the track slot 111, thereby facilitating the adjustment of the surgical angle.

[0075] Please refer to Figures 7 to 11 , Figure 7 A schematic diagram showing the exploded structure of another example gonioscopic device; Figure 8 A schematic diagram showing the exploded anatomical structure of another example of a gonioscopic device; Fig. 9 An example is shown Figure 8 One of the front view structural schematic diagrams of the gonioscopic device after hiding the support sleeve, the first sleeve and the lens assembly; Fig.10 An example is shown Figure 8 The second schematic diagram of the front view structure of the gonioscopic device after hiding the support sleeve, the first sleeve and the lens assembly; Fig.11 An example is shown Figure 8 The third schematic diagram of the front view structure of the gonioscopic device after hiding the support sleeve, the first sleeve and the lens assembly. Among them, Fig. 9 The gonioscope device in the Fig.10 The gonioscope device in the Fig.11 The end node of the gonioscopic device in the first intermediate state. In this embodiment, the lens 120 and the connecting seat 110 are the same as those in the first embodiment, and are not described in detail here.

[0076] like Figures 7 to 11 As shown, in another embodiment, the connection mechanism 210 further includes a limiting sleeve 214, which is sleeved outside the driving rod 221a. The sleeve wall of the limiting sleeve 214 is provided with a first elongated limiting groove 2141 and a second serrated limiting groove 2142 extending along the axial direction of the limiting sleeve 214 on one side facing the driven rod 222a, the first limiting groove 2141 having an axial length greater than the second limiting groove 2142, and the second limiting groove 2142 is provided on the end face of the sleeve wall between adjacent first limiting grooves 2141.

[0077] The end surface of the driven rod 222a facing the driving rod 221a is provided with a limiting tooth 2221, and in the 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 groove 2141. Therefore, the limiting tooth 2221 can enter the first limiting groove 2141, and in the unlocked state, at least part of the limiting tooth 2221 is located in the first limiting groove 2141 and abuts against the contour surface of the first limiting groove 2141. In the locked state, at least part of the limiting tooth 2221 is located in the second limiting groove 2142 and meshes and abuts against the contour surface of the second limiting groove 2142.

[0078] Optionally, the end surface of the limiting tooth 2221 of the driven rod 222a facing the driving rod 221a is provided with an inclined surface forming an acute angle with the first direction x, and the end surface of the second limiting groove 2142 facing the driven rod 222a is provided with a tooth structure matching the inclined surface of the limiting tooth 2221. In the unlocked state, at least part of the limiting tooth 2221 can slide smoothly along the inclined surface of the second limiting groove 2142 until it is engaged in the tooth structure of the second limiting groove 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 portion 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 size design, the limiting tooth 2221 can be engaged 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 further 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 sequentially arranged along the first direction x, and the first sleeve 211a and the second sleeve 215 are both sleeved outside the driven rod 222a.

[0081] Optionally, the end surface of the driving rod 221a facing the driven rod 222a is provided with a driving 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 driving rod 221a moves toward the driven rod 222a, and drives the driven rod 222a to approach the connecting seat 110 through the abutting driving tooth 2213 and the limiting tooth 2221, until the limiting tooth 2221 leaves the first limiting groove 2141. In the second intermediate state, the driving rod 221a continues to move toward the driven rod 222a, and the limiting tooth 2221 is squeezed by the driving tooth 2213 and drives the driven rod 222a to rotate along its axial direction. In the third intermediate state, the driving rod 221a is away from the driven rod 222a, and the driven rod 222a is close to the limiting sleeve 214, until the control mechanism 220 switches to the locked state.

[0082] The driving tooth 2213 includes an inclined surface that forms an acute angle with the first direction x, and 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 are pressed against each other, the driving tooth 2213 will apply a component force to the limiting tooth 2221 to drive it to rotate around the axial direction of the driven rod 222a. In the first intermediate state, since the limiting tooth 2221 is located in 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 and move along the first direction x. In the second intermediate state, since the limiting tooth 2221 leaves the first limiting groove 2141 and there is no limiting effect of the first limiting groove 2141, the limiting tooth 2221 is pressed by the driving tooth 2213 to drive the driven rod 222a to rotate along its axial direction.

[0083] The goniometer device 10 of the present application provides a first limiting groove 2141 and a second limiting groove 2142 of inconsistent lengths on the supporting 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 lengths of the driven rod 222a extending from the first sleeve 211a are also different, thereby achieving the control mechanism 220 being in a locked state and an unlocked state, respectively, and the driven rod 222a abutting against and separating from the connecting seat 110.

[0084] In some optional embodiments, such as Figure 7 and Figure 8 As shown, a second stopper 2214 is provided on the outer circumferential surface of the driving rod 221a. In the direction perpendicular to the first direction x, the maximum outer diameter of the second stopper 2214 is equal to the maximum outer diameter of the stopper tooth 2221 of the driven rod 222a, and is less than or equal to the maximum outer diameter of the first stopper groove 2141 of the stopper sleeve 214. At least part of the second stopper 2214 is kept in the first stopper groove 2141 during operation, and can follow the driving rod 221a to slide in the first stopper groove 2141 when the driving rod 221a moves along the first direction x. Through the second stopper 2214, the driving rod 221a only slides along the first direction x during operation without circumferential displacement, thereby ensuring that the driving tooth 2213 at the end of the driving rod 221a does not move in the circumferential direction.

[0085] Optionally, the second limiting member 2214 is a limiting block extending along the first direction x, and is used to enable the driving rod 221a to move up and down relative to the limiting sleeve 214 along the first direction x but not to rotate relative to the limiting sleeve 214 .

[0086] Therefore, the second limiting member 2214 of the driving rod 221a only slides axially in the first limiting groove 2141 of the limiting sleeve 214, so that the driving tooth 2213 of the driving rod 221a only moves axially without circumferential displacement. The limiting tooth 2221 of the driven rod 222a can generate both axial movement 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 driving 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, and smaller than the inner diameter of the support sleeve 213a. The support sleeve 213a is used to be installed on the outer side of the limiting sleeve 214 and the limiting tooth 2221 of the driven rod 222a. The control mechanism 220 also includes a second elastic member 225, the outer diameter of the second elastic member 225 is smaller than the outer diameter of the limiting tooth 2221, and smaller than the inner diameter of the support sleeve 213a, and larger than the inner diameter of the second sleeve 215. The second elastic member 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 member 225 abut against the distal end of the limiting tooth 2221 and the second sleeve 215 respectively, and are sleeved in the supporting sleeve 213a, so as not to generate circumferential displacement while axially extending or compressing. The second elastic member 225 is used to apply a force to the driven rod 222a to approach the limiting sleeve 214.

[0088] Optionally, the second elastic member 225 is a spring, one end of the second elastic member 225 abuts against the driven rod 222 a , and the other end abuts against the proximal end surface of the second sleeve 215 .

[0089] The gonioscopic device 10 of the present application is provided with a second elastic member 225 so that when the control mechanism 220 is in the third intermediate state, the driven rod 222a loses the force of the driving rod 221a and approaches the limiting sleeve 214 under the force of the second elastic member 225 until the control mechanism 220 is switched to the locked state.

[0090] In some optional embodiments, a plurality of driving teeth 2213 are arranged around the axis of the driving rod 221a at the distal end of the driving 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 and abuts against 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 may press the driving rod 221a multiple times to make it approach the driven rod 222a along the first direction x, and the driven rod 222a rotates in the circumferential direction around its axis, thereby switching back and forth between the locked state and the unlocked state.

[0093] The goniometer device 10 of the present application, by arranging a plurality of driving teeth 2213 around the axis of the driving rod 221a, a plurality of limiting teeth 2221 around the axis of the driven rod 222a, and a plurality of first limiting grooves 2141 and second limiting grooves 2142 alternately around the axis of the limiting sleeve 214, allows the operator to press the driving rod 221a multiple times and cause the control mechanism 220 to switch back and forth between the locked state and the unlocked state.

[0094] In this embodiment, the driving rod 221a, the driven rod 222a and the limiting sleeve 214 are engaged with teeth to achieve the contact and separation of the spherical end of the driven rod 222a and the slot 112 of the connecting seat 110. The second elastic member 225 and the second sleeve 215 are respectively sleeved on the driven rod 222a, and the second elastic member 225 is arranged in the supporting sleeve 213a and abuts against the second sleeve 215. When the control mechanism 220 is in the locked state, the second elastic member 225 is in a compressed state, and the driving rod 221a drives the driven rod 222a, so that the far end of the driven rod 222a abuts against the slot 112 of the connecting seat 110, thereby locking the driven rod 222a so that it cannot rotate in the track groove 111. In the unlocked state, the second elastic member 225 is in an extended state, and the far end of the driven rod 222a no longer abuts against the slot 112 of the connecting seat 110. Due to the existence of the first connection portion of the first sleeve 211a, the driven rod 222a and the connection seat 110 are only disengaged from the abutment but not necessarily separated, so that the driven rod 222a and the first connection portion 2111 can rotate in the track, thereby adjusting the operation angle.

[0095] The relative positions of the driving rod 221 and the driven rod 222 are limited by the limiting sleeve 214, the limiting teeth 2221, the driving teeth 2213, the second sleeve 215, the first sleeve 211a and the supporting sleeve 213, so that the distance between the two is limited to a limited area by the length and elastic modulus of the second elastic member 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 in the track slot 111, so as to achieve 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 in the track slot 111, so as to facilitate the adjustment of the operation angle.

[0096] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application.

Claims

1. A gonioscopic device, characterized in that: include: The lens assembly comprises a connection seat and a lens, wherein the connection seat is used to support the lens, and the lens has an axial direction; A handle assembly extends along a first direction and includes a connecting mechanism and a control mechanism connected to each other, wherein the connecting mechanism is rotatably connected to the connecting seat, and the control mechanism has a locked state and an unlocked state. Wherein, the control mechanism includes a driving rod and a driven rod. In the locked state, the driving rod drives the driven rod to engage and abut with the connecting seat so that the positions of the driven rod and the connecting seat are relatively fixed; 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 driven rod can rotate circumferentially relative to the connecting seat.

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

3. The gonioscopic device according to claim 1, wherein: The connecting seat is provided with a track groove, which extends along the circumference of the lens and surrounds at least a portion 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 portion, at least part of the first connecting portion 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 portion of the first sleeve in the track groove.

4. The gonioscopic device according to claim 3, characterized in that The lens has an axis perpendicular to the connection seat, and a first columnar side surface and a second columnar side surface are sequentially arranged from bottom to top along the extension direction of the axis, and 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 portion and a reinforcement portion, the fitting portion is fitted with the first columnar side and matches the shape of the first columnar side; both ends of the reinforcement portion are fixedly connected to the fitting portion, and part of the reinforcement portion is spaced apart from the fitting portion to form the track groove between the fitting portion and the reinforcement portion.

5. The gonioscopic device according to claim 4, characterized in that The lens comprises a lower surface and an upper surface which are arranged opposite to each other in the extension direction of the axis, the lower surface is concave toward 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 toward the plane where the reinforcement portion is located, the lower surface intersects with 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 optionally, A chamfered structure is provided on a side of the lens away from the handle assembly, and the chamfered structure is inclined from the upper surface to the lower surface toward the axis.

6. The gonioscopic device according to any one of claims 1 to 5, characterized in that: The connecting mechanism includes a supporting sleeve, which is sleeved outside the driving rod and / or the driven rod; the distal outer circumference of the driving rod is provided with an external thread, and the proximal inner circumference of the supporting sleeve is provided with an internal thread matching the external thread. When the driving rod rotates relative to the supporting 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.

7. The gonioscopic device according to claim 6, wherein: The support sleeve is provided with a receiving hole penetrating the support sleeve, the receiving hole comprises a first section and a second section arranged in sequence from the distal end to the proximal end, the first section is arranged close to the driving rod, the internal thread is located on the contour surface of the first section, the second section is arranged close to the first section, and its diameter is larger than that of the first section; The control mechanism also includes a first limit member, which is connected to the drive rod and is located in the second section. When the drive rod moves in a direction away from the driven rod until the first limit member abuts against the contour surface of the second section toward the first section, the support sleeve prevents the drive rod from continuing to move away from the driven rod.

8. The gonioscopic device according to claim 7, characterized in that The first limiter is a sleeve sleeved outside the driving rod and connected to the driving rod. The outer diameter of the first limiter is smaller than the diameter of the second section, and the outer diameter of the first limiter is larger than the diameter of the first section.

9. The gonioscopic device according to claim 7, wherein: The control mechanism further comprises a first elastic member, which is arranged axially inside the first limiting member and is used to apply a force to the driven rod to approach the connecting seat; A recessed accommodating cavity is provided at one end of the driving rod toward the driven rod, at least a portion of the first elastic member extends into the accommodating cavity and abuts against the contour surface of the accommodating cavity, and the other end of the first elastic member abuts against the driven rod; or, a recessed accommodating cavity is provided at one end of the driven rod toward the driving rod, at least a portion of the first elastic member extends into the accommodating cavity and abuts against the contour surface of the accommodating cavity, and the other end of the first elastic member abuts against the driving rod.

10. The gonioscopic device according to any one of claims 1 to 5, characterized in that: The connecting mechanism comprises a limiting sleeve, the limiting sleeve is sleeved outside the driving rod, and a sleeve wall of the limiting sleeve is provided with a first limiting groove in a long strip extending along the axial direction of the limiting sleeve and a second limiting groove in a serrated shape 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 provided on the end surface of the sleeve wall between adjacent first limiting grooves; A limiting tooth is provided on the end face of the driven rod facing the driving rod. In the 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 part 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 part of the limiting tooth is located in the second limiting groove and meshes and abuts against the contour surface of the second limiting groove.

11. The gonioscopic device according to claim 10, wherein: The end surface of the limiting tooth facing the driving rod is provided with an inclined surface forming an acute angle with the first direction, and the end surface of the second limiting groove facing the driven rod is provided with a tooth structure matching 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 gonioscopic device according to claim 11, characterized in that The end surface of the driving rod facing the driven rod is provided with driving teeth; The control mechanism also includes a first intermediate state, a second intermediate state and a third intermediate state. In the first intermediate state, the driving rod moves toward the driven rod and drives the driven rod to approach the connecting seat through the abutting driving teeth and the limiting teeth until the limiting teeth leave the first limiting groove; in the second intermediate state, the driving rod continues to move toward the driven rod, the limiting teeth are squeezed by the driving teeth and drive the driven rod to rotate along its axial direction; 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 switches to the locking state.

13. The gonioscopic device according to claim 12, wherein: The driving tooth comprises an inclined surface which forms an acute angle with the first direction, and the inclined surface of the driving tooth matches the inclined surface of the limiting tooth.

14. The gonioscopic device according to claim 11, wherein: 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 also includes 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 is used to apply a force to the driven rod to approach the limiting sleeve.

15. The gonioscopic device according to claim 14, wherein: A second limiting member is provided on the outer peripheral surface of the driving rod. 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 following the movement of the driving rod.

16. The gonioscopic device according to claim 15, characterized in that Along the first direction, the connection mechanism includes 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 to the limiting sleeve, and the second sleeve is sleeved outside the driven rod; 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.

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