Eyelid spreader for ophthalmic examination

Abstract

The invention relates to the field of ophthalmologic examination instruments, and particularly discloses an ophthalmologic examination eyelid spreader which comprises a sleeve assembly, a sliding block assembly is slidably connected to the interior of the sleeve assembly in a limiting mode, a spreading assembly is rotatably connected to the sliding block assembly in a limiting mode, and a spring is further arranged between the sliding block assemblies. The sleeve assembly is further rotationally connected with a collaborative overturning assembly, and the sleeve assembly is further connected with a positioning assembly in a limiting and sliding mode. Opening and closing of the dilator can be easily controlled by pinching a group of distraction assemblies with two fingers, operation is simple, convenient and rapid, and the working efficiency of doctors is improved; when the expanding assemblies expand eyelids to a degree suitable for examination, the sleeve assembly can be rotated to clamp and embed the positioning assembly on one group of expanding assemblies, so that the positions of the expanding assemblies are fixed, the expanding assemblies are prevented from being expanded too much in the examination process, and the stability and safety of examination are ensured.

Description

Technical Field

[0001] The invention belongs to the field of ophthalmic examination instruments, in particular to an eyelid stretcher for ophthalmic examination. Background Art

[0002] During an eye examination, doctors often need to pry open the patient's eyelids to more clearly observe the eyeball and surrounding tissues.

[0003] When traditional eyelid retractors are used to open the eyelids, the range of opening is often uncontrollable, and excessive opening may easily cause discomfort to the patient. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an eyelid stretcher for ophthalmic examination to solve the problem that the opening range of traditional eyelid stretchers in the prior art is often unable to be adjusted when stretching the eyelids, which can easily cause discomfort to the patient due to excessive stretching.

[0005] An eyelid retractor for ophthalmic examination comprises a sleeve assembly, wherein a group of slider assemblies are slidably connected to the inside of the sleeve assembly, a group of slider assemblies are rotatably connected to a retracting assembly, a spring is further arranged between the slider assemblies, a coordinated flip assembly is rotatably connected to the sleeve assembly, and a positioning assembly is slidably connected to the sleeve assembly; The spring drives a group of slider assemblies to drive the spreading assemblies away from each other. The spreading assemblies are limitedly slidably embedded in the cooperative flipping assembly. A group of the spreading assemblies rotate around the sleeve assembly through the cooperative flipping assembly, and the positioning assembly positions the spreading assemblies.

[0006] Preferably, the sleeve assembly comprises a sleeve body, the interior of which is fixedly connected with a guide rod 1, the sleeve body has a U-shaped cross section and serves to guide the slider body; The slider assembly comprises a slider body, and a compression groove is formed on the slider body; The slider body is limitedly slidably embedded on the guide rod 1, the spring is slidably embedded on the outer side of the guide rod 1, and the compression groove accommodates the spring in a compressed state.

[0007] Preferably, the expansion assembly comprises a connecting frame, the outer side of one end of the connecting frame is fixedly connected to the expansion frame, and the other end of the connecting frame is fixedly connected to the shaft ring; The slider body is also provided with an axle frame; The shaft ring is limitedly rotated and embedded on the shaft frame.

[0008] Preferably, the cooperative flipping assembly comprises a second guide rod, and both ends of the second guide rod are fixedly connected to limit rings; A sliding groove is provided through the middle of the shaft ring; The sleeve body is also provided with a mounting hole; The limiting ring is limited in rotation and is embedded in the mounting hole; The shaft ring is inserted into the second guide rod through a sliding groove and limitedly slidably engaged.

[0009] Preferably, the positioning assembly comprises a connecting bracket, a plurality of trapezoidal blocks are fixedly connected to the connecting bracket, and a lever is also fixedly connected to the outer side of the connecting bracket; The outer side of the collar is also fixedly connected with a protrusion, and the protrusion is also provided with a positioning slot; A limiting groove is also provided inside the sleeve body; The connecting bracket is limited and slidably engaged in the limiting groove, and the trapezoidal block is engaged in the positioning groove.

[0010] Preferably, a second spring is fixedly connected to the outer side of the connecting bracket; The second spring drives the connecting bracket to move the trapezoidal clamping block and clamp it in the positioning clamping slot.

[0011] Preferably, a soft sleeve is also provided on the outer side of the connecting frame near the shaft ring.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The opening and closing of the retractor can be easily controlled by pinching a group of retractor components with two fingers. The operation is simple and quick, which improves the doctor's work efficiency. Driven by the spring, a group of retractor components can move away from each other after being released, automatically adapting to the patient's eyelid width, which not only ensures the field of view of the examination, but also avoids the discomfort caused by excessive retraction to the patient. When the stretching assembly stretches the eyelids to a degree suitable for inspection, the sleeve assembly can be rotated to embed the positioning assembly into a set of stretching assemblies, thereby fixing the position of the stretching assemblies, preventing the stretching assemblies from opening too much during inspection, and ensuring the stability and safety of the inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the decomposition structure of the present invention; Figure 3 It is a structural schematic diagram of the sleeve assembly of the present invention; Figure 4 It is a structural schematic diagram of the slider assembly of the present invention; Figure 5 It is a structural schematic diagram of the propping assembly of the present invention; Figure 6 For the present invention Figure 5 A magnified view of middle; Figure 7 It is a structural schematic diagram of the cooperative flipping assembly of the present invention; Figure 8 It is a structural schematic diagram of the positioning assembly of the present invention; Fig. 9 is a cross-sectional view of a guide rod 1 of the present invention; Fig.10 is a cross-sectional view of the sleeve body of the present invention; Fig.11 It is a cross-sectional view of the trapezoidal block of the present invention.

[0014] In the figure: 1. sleeve assembly; 11. sleeve body; 12. guide rod one; 13. mounting hole; 14. limit groove; 2. slider assembly; 21. slider body; 22. compression groove; 23. shaft frame; 3. expansion assembly; 31. connecting frame; 32. expansion frame; 33. shaft ring; 34. sliding groove; 35. protrusion; 36. positioning slot; 37. soft sleeve; 4. spring; 5. cooperative flip assembly; 51. guide rod two; 52. limit ring; 6. positioning assembly; 61. connecting bracket; 62. trapezoidal block; 63. lever; 64. spring two. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] like Figure 1 and Figure 2 As shown: Embodiment 1: The present invention provides an eyelid retractor for ophthalmic examination, comprising a sleeve assembly 1, wherein a group of slider assemblies 2 are slidably connected to the inside of the sleeve assembly 1, a group of slider assemblies 2 are rotatably connected to a retracting assembly 3, a spring 4 is further arranged between the group of slider assemblies 2, a coordinated flip assembly 5 is rotatably connected to the sleeve assembly 1, and a positioning assembly 6 is slidably connected to the sleeve assembly 1; The spring 4 drives a group of slider assemblies 2 to drive the spreading assemblies 3 to move away from each other. The spreading assemblies 3 are limitedly slidably embedded in the coordinated flipping assembly 5. A group of spreading assemblies 3 rotates around the sleeve assembly 1 through the coordinated flipping assembly 5, and the positioning assembly 6 positions the spreading assemblies 3. When in use, two fingers pinch a group of spreading components 3, so that the group of spreading components 3 drives a group of slider components 2 to move relatively and approach, and at the same time the spring 4 is compressed; After one set of spreading components 3 is moved to the eyelid position, one set of spreading components 3 is gradually released, and at this time, the one set of spreading components 3 is driven by the spring 4 to move away from each other; When the expansion assembly is expanded to a suitable degree for examination according to the patient's condition, the sleeve assembly 1 is rotated so that the positioning assembly 6 is embedded in a group of expansion assemblies 3, thereby fixing the position of a group of expansion assemblies 3 and preventing a group of expansion assemblies 3 from being opened too much.

[0017] like Figures 3 to 6 As shown: Specifically, the sleeve assembly 1 includes a sleeve body 11, and a guide rod 12 is fixedly connected to the interior of the sleeve body 11. The cross section of the sleeve body 11 is U-shaped and plays a guiding role for the slider body 21; The slider assembly 2 includes a slider body 21, and a compression groove 22 is formed on the slider body 21; The slider body 21 is limitedly slidably embedded on the guide rod 12, the spring 4 is slidably embedded on the outer side of the guide rod 12, and the compression groove 22 accommodates the spring 4 in a compressed state.

[0018] Specifically, the expansion assembly 3 includes a connecting frame 31, a expansion frame 32 is fixedly connected to the outer side of one end of the connecting frame 31, and a shaft ring 33 is fixedly connected to the other end of the connecting frame 31; The slider body 21 is also provided with a shaft frame 23; The shaft ring 33 is locked on the shaft frame 23 for limited rotation.

[0019] Specifically, a soft sleeve 37 is sleeved on the outer side of the connecting frame 31 near the shaft ring 33 .

[0020] As can be seen from the above, when the soft sleeve 37 on the support frame 32 is pinched with two fingers, the shaft ring 33 is driven through the connecting frame 31, and the slider body 21 is driven to move relatively and approach along the guide rod 12 at the same time, and the compression groove 22 accommodates the spring 4 in a compressed state; After moving the opening frame 32 to be embedded in the eyelid closing position, gradually release both hands, the spring 4 slides outside the guide rod 12 and drives a group of slider bodies 21 to move away from each other, and then drives the opening frame 32 to open the eyelid through the movement of the shaft ring 33; When the opening is extended to a suitable degree for examination according to the patient's condition, the sleeve body 11 is rotated so that the positioning component 6 is snapped onto the opening component 3 , thereby fixing the position of the opening component 3 .

[0021] like Figure 3 , Figure 6 , Figure 7 and Fig. 9 As shown: Embodiment 2: This embodiment is basically the same as the previous embodiment, except that the cooperative flip assembly 5 includes a second guide rod 51, and both ends of the second guide rod 51 are fixedly connected to a limiting ring 52; A sliding groove 34 is formed through the middle of the shaft ring 33; The sleeve body 11 is also provided with a mounting hole 13; The limiting ring 52 is limited in rotation and is embedded in the mounting hole 13; The shaft ring 33 is limitedly slidably engaged on the second guide rod 51 through the sliding groove 34 .

[0022] As can be seen from the above, when a group of opening frames 32 move away from each other and open the eyelids, the cooperation between the sliding slot 34 and the second guide rod 51 can ensure that the group of opening frames 32 are always located in a straight line to avoid deflection. At the same time, the sleeve body 11 is rotated so that the positioning assembly 6 can be locked onto the expansion assembly 3, so that the position of the expansion assembly 3 can be fixed.

[0023] like Figure 8 , Fig.10 and Fig.11 As shown: Embodiment 3: This embodiment is basically the same as the previous embodiment, except that the positioning assembly 6 includes a connecting bracket 61, a plurality of trapezoidal blocks 62 are fixedly connected to the connecting bracket 61, and a lever 63 is also fixedly connected to the outer side of the connecting bracket 61; A protrusion 35 is fixedly connected to the outer side of the shaft ring 33, and a positioning slot 36 is formed on the protrusion 35; A limiting groove 14 is also provided inside the sleeve body 11; The connecting bracket 61 is limitedly slidably engaged in the limiting groove 14 , and the trapezoidal block 62 is engaged in the positioning groove 36 .

[0024] Specifically, the outer side of the connecting bracket 61 is also fixedly connected with a second spring 64; The second spring 64 drives the connecting bracket 61 to move the trapezoidal block 62 and lock it into the positioning slot 36 .

[0025] As can be seen from the above, when the sleeve body 11 is rotated around the expansion component 3, the sleeve body 11 will move with the positioning component 6. When the trapezoidal block 62 moves to the position of the protrusion 35, it will first push the connecting bracket 61 to compress the second spring 64. After continuing to move, the second spring 64 drives the trapezoidal block 62 to be embedded in the positioning slot 36, thereby firmly fixing the position of the expansion component 3. If the degree of expansion needs to be adjusted or the expander needs to be removed, one only needs to pinch a set of connecting frames 31 in advance and gently push the lever 63 to make the connecting bracket 61 and the trapezoidal block 62 disengage from the positioning slot 36, thereby releasing the fixation of the expansion component 3, so that the doctor can make flexible adjustments according to the patient's specific conditions.

[0026] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0027] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0031] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An eyelid stretcher for ophthalmic examination, characterized in that: The invention comprises a sleeve assembly (1), wherein a group of slider assemblies (2) are connected to the sleeve assembly (1) in a limited sliding manner, a group of slider assemblies (2) are connected to a spreading assembly (3) in a limited rotation manner, a spring (4) is arranged between the slider assemblies (2), a coordinated flip assembly (5) is connected to the sleeve assembly (1) in a rotation manner, and a positioning assembly (6) is connected to the sleeve assembly (1) in a limited sliding manner; The spring (4) drives a group of slider assemblies (2) to drive the spreading assemblies (3) to move away from each other. The spreading assemblies (3) are limitedly slidably engaged on the coordinated flipping assembly (5). The group of spreading assemblies (3) rotates around the sleeve assembly (1) through the coordinated flipping assembly (5). The positioning assembly (6) positions the spreading assemblies (3).

2. An eyelid stretcher for ophthalmic examination as claimed in claim 1, characterized in that: The sleeve assembly (1) comprises a sleeve body (11), the interior of the sleeve body (11) being fixedly connected to a guide rod 1 (12), the sleeve body (11) having a U-shaped cross section and serving as a guide for the slider body (21); The slider assembly (2) comprises a slider body (21), and a compression groove (22) is provided on the slider body (21); The slider body (21) is limitedly slidably embedded on the guide rod (12), the spring (4) is slidably embedded on the outer side of the guide rod (12), and the compression groove (22) accommodates the spring (4) in a compressed state.

3. An eyelid retractor for ophthalmic examination as claimed in claim 2, characterized in that: The expansion assembly (3) comprises a connecting frame (31), the outer side of one end of the connecting frame (31) is fixedly connected to a expansion frame (32), and the other end of the connecting frame (31) is fixedly connected to a shaft ring (33); The slider body (21) is also provided with a shaft frame (23); The shaft ring (33) is locked on the shaft frame (23) for limited rotation.

4. An eyelid retractor for ophthalmic examination as claimed in claim 3, characterized in that: The cooperative turning assembly (5) comprises a second guide rod (51), and both ends of the second guide rod (51) are fixedly connected to a limiting ring (52); A sliding groove (34) is formed through the middle of the shaft ring (33); The sleeve body (11) is also provided with a mounting hole (13); The limiting ring (52) is rotationally locked in the mounting hole (13); The shaft ring (33) is limitedly slidably engaged on the second guide rod (51) through the sliding groove (34).

5. An eyelid retractor for ophthalmic examination as claimed in claim 4, characterized in that: The positioning assembly (6) comprises a connecting bracket (61), a plurality of trapezoidal clamping blocks (62) are fixedly connected to the connecting bracket (61), and a lever (63) is also fixedly connected to the outer side of the connecting bracket (61); A protrusion (35) is fixedly connected to the outer side of the shaft ring (33), and a positioning slot (36) is provided on the protrusion (35); A limiting groove (14) is also provided inside the sleeve body (11); The connecting bracket (61) is limitedly slidably engaged in the limiting groove (14), and the trapezoidal block (62) is engaged in the positioning groove (36).

6. An eyelid retractor for ophthalmic examination as claimed in claim 5, characterized in that: A second spring (64) is also fixedly connected to the outer side of the connecting bracket (61); The second spring (64) drives the connecting bracket (61) to move the trapezoidal clamping block (62) and to clamp it into the positioning clamping slot (36).

7. An eyelid retractor for ophthalmic examination as claimed in claim 3, characterized in that: A soft sleeve (37) is also sleeved on the outer side of the connecting frame (31) near the shaft ring (33).

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