Eyelid dilator

Abstract

The eyelid spreader comprises a first holding rod, a second holding rod, a spreading assembly and an angle adjusting assembly, and the rear end of the second holding rod is hinged to the rear end of the first holding rod; the two distraction assemblies are arranged at the rear end of the first holding rod and the rear end of the second holding rod correspondingly, each distraction assembly comprises two distraction frames and two distance adjusting pieces, the two distraction frames are connected to the rear end of the first holding rod and the rear end of the second holding rod through the two distance adjusting pieces correspondingly, and the overall length of the corresponding distraction frames can be adjusted through the distance adjusting pieces; the angle adjusting assembly is arranged between the rear end of the first holding rod and the rear end of the second holding rod. According to the eyelid dilator, the distance adjusting piece drives the whole length of the distraction frame to be increased and decreased, so that the whole length of the distraction frame can adapt to the sizes of eyes of different patients; the unfolding angle between the first holding rod and the second holding rod is adjusted through the angle adjusting assembly, and therefore the upper eyelid and the lower eyelid of the patient can be conveniently unfolded through the two unfolding rods.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary equipment, and in particular to an eyelid retractor. Background Art

[0002] Eyelids, commonly known as eyelids, are located in front of the eyeball and form a barrier to protect the eyeball. Eyelids are divided into upper eyelids and lower eyelids. When performing eye surgery, the eyelids usually need to be opened to facilitate surgery. Eyelid spreader is a medical device commonly used in ophthalmic examinations or ophthalmic surgery. The function of the eyelid spreader is to support the patient's upper and lower eyelids with two hooks, and then open the eyelids through a bracket to expose the eyeball under the eyelids for examination or surgery. The eyelid spreader helps to expand the doctor's surgical field and is an indispensable medical device in ophthalmic surgery.

[0003] Currently, when doctors use eyelid speculum to examine and treat patients' eyes, the size of the opening structure of the existing eyelid speculum is fixed, while the sizes of patients' eyes are different, especially the sizes of adults and two-way eyes, so the opening structure of the eyelid speculum does not match the size of the eyelid, resulting in inconvenience in use. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention proposes an eyelid speculum to solve the problem that the size of the opening structure of the existing eyelid speculum is fixed, while the sizes of patients' eyes are different, especially the sizes of adults and two-way eyes, which makes the opening structure of the eyelid speculum not match the size of the eyelid.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] An eyelid retractor, comprising:

[0007] First grip pole;

[0008] A second gripping rod, a rear end of which is hingedly connected to a rear end of the first gripping rod;

[0009] There are two spreading assemblies, which are respectively arranged at the rear ends of the first gripping rod and the second gripping rod, and the spreading assemblies include two spreading frames and two distance adjusting members, and the two spreading frames are respectively connected to the rear ends of the first gripping rod and the second gripping rod through the two distance adjusting members, and the overall length of the corresponding spreading frames can be adjusted through the distance adjusting members; and

[0010] An angle adjustment component is arranged between the rear ends of the first gripping rod and the second gripping rod, and is used to adjust the opening angle between the first gripping rod and the second gripping rod.

[0011] The above-mentioned eyelid stretcher drives the overall length of the stretching frame to lengthen and shorten through the distance adjusting member, so that the overall length of the stretching frame can adapt to the size of the eyes of different patients; the expansion angle between the first holding rod and the second holding rod is adjusted through the angle adjustment component, so that the two stretching rods can stretch the patient's upper eyelid and lower eyelid.

[0012] Furthermore, the opening frame includes a fixed tube, a movable tube and two spreading rods, one end of the fixed tube is connected to the distance adjusting piece, one end of the movable tube is inserted into the other end of the fixed tube for sliding connection, and the distance adjusting piece can drive one end of the movable tube to slide inside the fixed tube, the ends of the two spreading rods that are close to each other are fixedly connected by elastic sleeves, and the ends of the two spreading rods that are away from each other are fixedly connected to the fixed tube and the movable tube respectively by two connecting rods.

[0013] Furthermore, the pitch adjusting member includes a pitch adjusting knob, a turbine and a worm gear. The rear end faces of the first holding rod and the second holding rod are provided with connecting tubes, and the outer sides of the two connecting tubes are rotatably provided with pitch adjusting knobs. The end of the pitch adjusting knob rotates through the connecting tube and extends to the inside where a turbine is fixedly provided. One end of the fixed tube is fixedly connected to the connecting tube, and a worm gear is rotatably provided between the fixed tube and the connecting tube. One end of the worm gear is meshedly connected to the turbine, and the other end is inserted into the movable tube for threaded connection.

[0014] Furthermore, both side walls inside the fixed tube are provided with limiting grooves, and both side walls outside the movable tube are fixedly provided with limiting blocks, which are inserted into the limiting grooves for sliding connection.

[0015] Furthermore, the outer wall of the movable tube is provided with scale lines, and a retaining ring is fixedly provided on the outer wall of the movable tube. The side of the retaining ring can fit on the end face of the fixed tube, and the position where the retaining ring contacts the fixed tube corresponds to the position of the zero scale line.

[0016] Furthermore, the angle adjustment assembly includes an adjusting screw ring, an adjusting tube and an adjusting rod, one end of the adjusting rod is inserted into one end of the adjusting tube for sliding connection, the other end of the adjusting rod and the other end of the adjusting tube are respectively hingedly connected to the opposite side surfaces of the first holding rod and the second holding rod, the adjusting screw ring is threadedly sleeved on the outside of the adjusting rod, and one end of the adjusting screw ring is rotatably connected to the end surface of the adjusting tube away from the second holding rod.

[0017] Furthermore, the angle adjustment assembly also includes a spring, which is arranged inside the adjustment tube, and one end of the spring is connected to the inner wall of the adjustment tube, and the other end is connected to the end surface of the adjustment rod located inside the adjustment tube.

[0018] Furthermore, the end of the adjusting rod close to the first holding rod is fixedly connected to a first hinged joint, the first hinged joint is hingedly connected to the first holding rod, and the end of the adjusting tube close to the second holding rod is fixedly connected to a second hinged joint, the second hinged joint is hingedly connected to the second holding rod.

[0019] Beneficial effects of the present invention: The eyelid retractor drives the overall length of the retracting frame to lengthen or shorten by turning the distance adjustment knob, so that the overall length of the retracting frame can adapt to the size of different patients' eyes; by adjusting the screw ring, the overall length of the adjusting tube and the adjusting rod is changed, and the expansion angle between the first gripping rod and the second gripping rod is adjusted, so that the two retracting rods can retract the upper eyelid and the lower eyelid of the patient. In addition, the setting of the scale line facilitates the precise adjustment of the overall length of the retracting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation of the present invention, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0021] Figure 1 It is a front view of the present invention;

[0022] Figure 2 A top view of the present invention;

[0023] Figure 3 It is a schematic diagram of the top view of the structure of the support frame;

[0024] Figure 4 This is the right side picture of the open frame;

[0025] Figure 5 It is a schematic diagram of the structure of the connection between the opening rod and the elastic sleeve;

[0026] Figure 6 It is a structural schematic diagram of the distance adjusting member;

[0027] Figure 7 for Figure 1 A schematic diagram of the structure of the angle adjustment component at A in the middle;

[0028] Reference numerals:

[0029] 10- First grip bar;

[0030] 20- Second grip bar;

[0031] 30-spreading assembly, 31-spreading frame, 311-fixed tube, 312-movable tube, 313-spreading rod, 314-elastic sleeve, 315-connecting rod; 32-adjusting piece, 321-adjusting knob, 322-turbine, 323-worm, 324-connecting tube, 325-support ring; 33-limiting block, 34-limiting groove, 35-scale line, 36-blocking ring;

[0032] 40 - angle adjustment assembly, 41 - adjustment screw ring, 42 - adjustment tube, 43 - adjustment rod, 44 - spring, 45 - first hinge joint, 46 - second hinge joint. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions and positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred position or element must have a specific direction, be constructed and operated in a specific way, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, 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 technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] See also Figure 1 to Figure 2 The present invention provides an eyelid retractor, comprising a first gripping rod 10, a second gripping rod 20, a retracting assembly 30 and an angle adjustment assembly 40. The rear end of the second gripping rod 20 is hingedly connected to the rear end of the first gripping rod 10. There are two retracting assemblies 30, which are respectively arranged at the rear ends of the first gripping rod 10 and the second gripping rod 20. The retracting assembly 30 comprises two retracting frames 31 and two distance adjusting members 32. The two retracting frames 31 are respectively connected to the rear ends of the first gripping rod 10 and the second gripping rod 20 through the two distance adjusting members 32. The overall length of the corresponding retracting frame 31 can be adjusted through the distance adjusting members 32. The angle adjustment assembly 40 is arranged between the rear ends of the first gripping rod 10 and the second gripping rod 20, and is used to adjust the opening angle between the first gripping rod 10 and the second gripping rod 20.

[0037] When in use, when the doctor needs to open the patient's upper and lower eyelids, first adjust the overall length of the opening frame 31 according to the size of the patient's eyes, especially for adults and children's eyes, through the control of the distance adjustment member 32; then place one end of the two opening frames 31 at the upper and lower eyelids respectively, and drive the angle between the first gripping rod 10 and the second gripping rod 20 to slowly increase through the angle adjustment component 40, thereby expanding the distance between the upper and lower eyelids, exposing the eyeball under the eyelids, and facilitating the doctor's inspection and treatment. By adjusting the overall length of the opening frame 31, the overall length of the opening frame 31 is adapted to the size of the patient's eyes, avoiding the overall length of the opening frame 31 being too large, resulting in the inability to place the side of the opening frame 31 inside the eyelid.

[0038] Please also read Figures 3 to 5 The opening frame 31 includes a fixed tube 311, a movable tube 312 and two opening rods 313. One end of the fixed tube 311 is connected to the distance adjusting member 32. One end of the movable tube 312 is inserted into the other end of the fixed tube 311 for sliding connection. The distance adjusting member 32 can drive one end of the movable tube 312 to slide inside the fixed tube 311. The ends of the two opening rods 313 that are close to each other are fixedly connected by an elastic sleeve 314. The ends of the two opening rods 313 that are away from each other are fixedly connected to the fixed tube 311 and the movable tube 312 respectively by two connecting rods 315. The elastic sleeve 314 is fixedly mounted on the outer wall of the two opening rods 313, so as to completely wrap up the two opening rods 313, so that the contact position between the elastic sleeve 314 and the eyelid is smooth and flat, so as not to damage the patient's eyes.

[0039] In the initial state, the end faces of the two spreading rods 313 are in contact with each other, and the elastic sleeve 314 is in a naturally extended state. When adjusting the overall length of the spreading frame 31, the end of the movable tube 312 is driven to slide in the fixed tube 311 by the distance adjusting member 32, so that the length of the movable tube 312 gradually slides out of the fixed tube 311. At the same time, the ends of the two spreading rods 313 are separated, and the distance between them increases. At this time, the elastic sleeve 314 is extended due to the separation of the ends of the two spreading rods 313, so that the overall length of the spreading frame 31 is extended until it is adjusted to a length that adapts to the patient's eyelids. Moreover, both spreading rods 313 are arc-shaped structures, so as to adapt to the curvature of the eyelids.

[0040] Please also read Figure 6The distance adjusting member 32 includes a distance adjusting knob 321, a turbine 322 and a worm 323. The rear end surfaces of the first gripping rod 10 and the second gripping rod 20 are both provided with a connecting tube 324, and the outer sides of the two connecting tubes 324 are both rotatably provided with a distance adjusting knob 321. The end of the distance adjusting knob 321 is rotatably passed through the connecting tube 324 and extends to the inside and is fixed with a turbine 322. One end of the fixed tube 311 is fixedly connected with the connecting tube 324. A worm 323 is rotatably passed through the inside of the fixed tube 311 and the connecting tube 324. The end of the worm 323 located in the connecting tube 324 is rotatably arranged through a support ring 325, so that the worm 323 can rotate stably. One end of the worm 323 is meshed and connected with the turbine 322, and the other end is inserted into the inner thread of the movable tube 312 for connection. Among them, both side walls inside the fixed tube 311 are provided with a limit groove 34, and both side walls outside the movable tube 312 are fixedly provided with a limit block 33, and the limit block 33 is inserted into the limit groove 34 for sliding connection. The arrangement of the limiting block 33 and the limiting groove 34 enables the movable rod to move only within the fixed tube 311 .

[0041] When the overall length of the expansion frame 31 needs to be adjusted, the pitch adjustment knob 321 is rotated forward to drive the turbine 322 to rotate, and the turbine 322 drives the worm 323 to rotate, so that the worm 323 drives the movable tube 312 to move in the fixed tube 311, thereby driving the length of the movable tube 312 to slide outside the fixed tube 311, and finally making the overall length of the expansion frame 31 longer; when the pitch adjustment knob 321 is rotated in the reverse direction, the length of the movable tube 312 can be driven to slide into the fixed tube 311, and finally making the overall length of the expansion frame 31 shorter. In addition, since the meshing of the turbine 322 and the worm 323 has a self-locking property, the worm 323 cannot drive the turbine 322 to rotate, thereby overcoming the restoring elastic force of the elastic sleeve 314.

[0042] Preferably, a scale line 35 is provided on the outer wall of the movable tube 312, and a retaining ring 36 is fixedly provided on the outer wall of the movable tube 312. The side of the retaining ring 36 can be fitted on the end face of the fixed tube 311, and the position where the retaining ring 36 contacts the fixed tube 311 corresponds to the position of the zero scale line. When the movable tube 312 is extended to drive the retaining ring 36 to move, the distance between the retaining ring 36 and the fixed tube 311 is the sliding distance of the movable tube 312, and the scale value corresponding to the end face of the fixed tube 311 is the sliding distance of the movable tube 312, so that the overall extended lengths of the two adjustment opening frames 31 are the same, and the effect of precise adjustment is achieved.

[0043] Please also read Figure 7In this embodiment, the angle adjustment assembly 40 includes an adjusting screw ring 41, an adjusting tube 42 and an adjusting rod 43. One end of the adjusting rod 43 is inserted into one end of the adjusting tube 42 for sliding connection. The other end of the adjusting rod 43 and the other end of the adjusting tube 42 are respectively hingedly connected to the opposite side surfaces of the first holding rod 10 and the second holding rod 20. The adjusting screw ring 41 is threadedly sleeved on the outside of the adjusting rod 43, and one end of the adjusting screw ring 41 is rotatably connected to the end surface of the adjusting tube 42 away from the second holding rod 20.

[0044] When it is necessary to adjust the expansion angle between the first gripping rod 10 and the second gripping rod 20, the adjusting screw ring 41 is rotated. Due to the threaded connection between the adjusting screw ring 41 and the adjusting rod 43, the length of the adjusting rod 43 slides to the outside of the adjusting tube 42, so that the adjusting rod 43 is pressed against the first gripping rod 10, driving the angle between the first gripping rod 10 and the second gripping rod 20 to gradually increase until the two opening rods 313 can be placed in the upper eyelid and the lower eyelid respectively; then the screw ring 41 is continued to be adjusted to drive the angle between the first gripping rod 10 and the second gripping rod 20 to continue to increase until the two opening rods 313 open the upper eyelid and the lower eyelid. When the adjusting screw ring 41 stops rotating, the overall length of the adjusting tube 42 and the adjusting rod 43 is fixed, so that the expansion angle between the first gripping rod 10 and the second gripping rod 20 is fixed, so that the position of the opened upper eyelid and the lower eyelid will not change, which is convenient for doctors to examine and treat the eyes.

[0045] Preferably, the angle adjustment assembly 40 further includes a spring 44, which is disposed inside the adjustment tube 42, and one end of the spring 44 is connected to the inner wall of the adjustment tube 42, and the other end is connected to the end surface of the adjustment rod 43 located inside the adjustment tube 42. When the first gripping rod 10 and the second gripping rod 20 are closed together, the spring 44 is in a compressed and elongated state. When the first gripping rod 10 and the second gripping rod 20 are unfolded, the spring 44 is elongated and is still in a compressed and elongated state. Due to the existence of the restoring elastic force of the spring 44, there is always a force exerted on the first gripping rod 10 and the second gripping rod 20 to unfold, thereby enhancing the stability of the connection between the adjustment screw ring 41 and the adjustment rod 43 and preventing the adjustment screw ring 41 from being easily rotated.

[0046] Preferably, the end of the adjusting rod 43 close to the first gripping rod 10 is fixedly connected with a first hinge joint 45, and the first hinge joint 45 is hingedly connected to the first gripping rod 10. The end of the adjusting tube 42 close to the second gripping rod 20 is fixedly connected with a second hinge joint 46, and the second hinge joint 46 is hingedly connected to the second gripping rod 20. The provision of the first hinge joint 45 and the second hinge joint 46 facilitates the extension of the overall length of the adjusting tube 42 and the adjusting rod 43.

[0047] The working principle of the present invention is as follows: during use, when the doctor needs to open the patient's upper and lower eyelids, first, according to the size of the patient's eyes, especially for the eyes of adults and children, the distance adjustment knob 321 is turned forward, and the length of the movable tube 312 is driven to slide outside the fixed tube 311 through the transmission of the turbine 322 and the worm 323. At the same time, the ends of the two opening rods 313 are separated, and the distance between the two increases. At this time, the elastic sleeve 314 is extended due to the separation of the ends of the two opening rods 313, thereby lengthening the overall length of the opening frame 31 until it is adjusted to adapt to the length of the patient's eyelids.

[0048] Next, rotate the adjusting screw ring 41 to drive the length of the adjusting rod 43 to slide to the outside of the adjusting tube 42, so that the adjusting rod 43 is pressed against the first holding rod 10, driving the angle between the first holding rod 10 and the second holding rod 20 to gradually increase until the two opening rods 313 can be placed in the upper eyelid and the lower eyelid respectively; then continue to adjust the screw ring 41 to drive the angle between the first holding rod 10 and the second holding rod 20 to continue to increase until the two opening rods 313 open the upper eyelid and the lower eyelid.

[0049] After the doctor has examined and accepted the treatment, the adjusting screw ring 41 is rotated in the opposite direction, so that the angle between the first gripping rod 10 and the second gripping rod 20 is gradually reduced, until the two opening rods 313 are taken out of the upper eyelid and the lower eyelid respectively;

[0050] Beneficial effects of the present invention: The eyelid retractor drives the overall length of the retracting frame 31 to lengthen or shorten by turning the distance adjustment knob 321, so that the overall length of the retracting frame 31 can adapt to the size of different patients' eyes; by adjusting the screw ring 41, the overall length of the adjustment tube 42 and the adjustment rod 43 is changed, and the expansion angle between the first gripping rod 10 and the second gripping rod 20 is adjusted, so that the two retracting rods 313 can retract the upper eyelid and the lower eyelid of the patient. In addition, the setting of the scale line 35 facilitates the precise adjustment of the overall length of the retracting frame 31.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. An eyelid retractor, characterized in that: include: First grip pole; A second gripping rod, a rear end of which is hingedly connected to a rear end of the first gripping rod; There are two spreading assemblies, which are respectively arranged at the rear ends of the first gripping rod and the second gripping rod, and the spreading assemblies include two spreading frames and two distance adjusting members, the two spreading frames are respectively connected to the rear ends of the first gripping rod and the second gripping rod through the two distance adjusting members, and the overall length of the corresponding spreading frames can be adjusted through the distance adjusting members; and An angle adjustment component is arranged between the rear ends of the first gripping rod and the second gripping rod, and is used to adjust the opening angle between the first gripping rod and the second gripping rod.

2. An eyelid retractor according to claim 1, characterized in that: The expansion frame includes a fixed tube, a movable tube and two expansion rods, one end of the fixed tube is connected to the distance adjusting member, one end of the movable tube is inserted into the other end of the fixed tube for sliding connection, and the distance adjusting member can drive one end of the movable tube to slide inside the fixed tube, the ends of the two expansion rods that are close to each other are fixedly connected by an elastic sleeve, and the ends of the two expansion rods that are away from each other are fixedly connected to the fixed tube and the movable tube respectively by two connecting rods.

3. An eyelid retractor according to claim 2, characterized in that: The pitch adjusting member includes a pitch adjusting knob, a turbine and a worm gear. The rear end faces of the first holding rod and the second holding rod are each provided with a connecting tube, and the outer sides of the two connecting tubes are rotatably provided with a pitch adjusting knob. The end of the pitch adjusting knob rotates through the connecting tube and extends to the inside where a turbine gear is fixedly provided. One end of the fixed tube is fixedly connected to the connecting tube, and a worm gear is rotatably provided between the fixed tube and the inside of the connecting tube. One end of the worm gear is meshedly connected to the turbine, and the other end is inserted into the movable tube for threaded connection.

4. An eyelid retractor according to claim 3, characterized in that: Both side walls inside the fixed tube are provided with limiting grooves, and both side walls outside the movable tube are fixedly provided with limiting blocks, and the limiting blocks are inserted into the limiting grooves for sliding connection.

5. The eyelid retractor according to claim 3, characterized in that: The outer wall of the movable tube is provided with scale lines, and a retaining ring is fixedly provided on the outer wall of the movable tube. The side surface of the retaining ring can be attached to the end surface of the fixed tube, and the position where the retaining ring contacts the fixed tube corresponds to the position of the zero scale line.

6. The eyelid retractor according to claim 1, characterized in that: The angle adjustment assembly includes an adjusting screw ring, an adjusting tube and an adjusting rod, one end of the adjusting rod is inserted into one end of the adjusting tube for sliding connection, the other end of the adjusting rod and the other end of the adjusting tube are respectively hingedly connected to the opposite side surfaces of the first holding rod and the second holding rod, the adjusting screw ring is threadedly sleeved on the outside of the adjusting rod, and one end of the adjusting screw ring is rotatably connected to the end surface of the adjusting tube away from the second holding rod.

7. An eyelid retractor according to claim 6, characterized in that: The angle adjustment assembly also includes a spring, which is arranged inside the adjustment tube, with one end of the spring connected to the inner wall of the adjustment tube and the other end connected to the end surface of the adjustment rod located inside the adjustment tube.

8. An eyelid retractor according to claim 7, characterized in that: The end of the adjusting rod close to the first holding rod is hingedly connected with a first hinged joint, and the first hinged joint is fixedly connected to the first holding rod. The end of the adjusting tube close to the second holding rod is hingedly connected with a second hinged joint, and the second hinged joint is fixedly connected to the second holding rod.

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