Ophthalmic sclera positioner

Abstract

The utility model belongs to the technical field of ophthalmologic surgical instruments, and particularly relates to an ophthalmic sclera positioner which comprises a first ruler arm and a second ruler arm. The middle part of the second ruler arm is hinged with the middle part of the first ruler arm; the positioning part is arranged at the bottom end of the first ruler arm; the marking part is detachably connected to the bottom end of the second ruler arm; the ruler is fixedly connected to one side of the first ruler arm, and the scale surface of the ruler corresponds to the second ruler arm; and the driving part is arranged on the first ruler arm and is in transmission connection with the second ruler arm. According to the utility model, the positioning part coincides with the corneal limbus exposed under the visual field, so that the accuracy of the measuring direction can be ensured; the required position is measured by changing the reading on the scale, after the required position is obtained, dyeing marking is carried out on the sclera surface through the marking part, convenience and rapidness are achieved, and the problem that repeated operation is needed when the mark disappears can be solved. And the marking part is disposable, so that the accuracy and the convenience of sclera positioning are improved, and the operation safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ophthalmic surgical instruments, and particularly relates to an eye sclera locator. Background Art

[0002] Rhegmatogenous retinal detachment is a serious blinding disease. Scleral external pressure surgery for retinal detachment is an important procedure for retinal detachment repositioning. This procedure has many advantages. Among them, the positioning of the subretinal fluid inlet, the circumferential band and the silicone block are important steps in the scleral external pressure surgery, which can determine the success or failure of the operation to a certain extent.

[0003] In clinical practice, the eyeball is often pulled by the rectus muscle to expose the sclera to the surgical field, and then the distance from the limbus to the sclera is measured using a compass ruler. The measurement direction must pass through the center of the cornea to ensure accurate measurement. At this time, since the sclera is exposed to the visual field, the eyeball rotation caused by pulling the rectus muscle causes most of the cornea to be blocked by the eyelid, and the center of the cornea is also blocked, exposing only part of the limbus. Therefore, it is difficult to accurately confirm whether the direction measured by the compass ruler is along the tangent direction of the limbus perpendicular to the center of the cornea. Once the measurement direction is offset, it will seriously affect the position of the discharge port, the cerclage band and the silicone block, thereby affecting the success rate of the operation. In addition, after measuring the required distance, the compass ruler foot is often used in clinical practice to pressurize the sclera surface to form an indentation on the sclera surface for positioning marking. This pressurization operation is difficult due to space limitations, and the indentation is easy to disappear. Sometimes repeated operations are required, which brings unnecessary damage and prolongs the operation time, bringing safety hazards to patients. Utility Model Content

[0004] The utility model aims to provide an eye sclera locator to solve the above problems.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] An eye scleral locator, comprising:

[0007] First foot arm;

[0008] A second scalar arm, the middle portion of which is hinged to the middle portion of the first scalar arm;

[0009] A positioning portion, arranged at the bottom end of the first ruler arm;

[0010] A marking portion, detachably connected to the bottom end of the second ruler arm;

[0011] A ruler, fixedly connected to one side of the first ruler arm, the ruler is located at the top of the first ruler arm, and the scale surface of the ruler is arranged corresponding to the second ruler arm;

[0012] The driving part is arranged on the first ruler arm and is transmission-connected with the second ruler arm.

[0013] Preferably, the positioning portion includes:

[0014] A turntable, rotatably connected to the top end of the first ruler arm;

[0015] A semicircular corneal locator is fixedly connected to the bottom end of the rotating disk, and the semicircular corneal locator is far away from the second ruler arm.

[0016] Preferably, the marking portion comprises:

[0017] A marking pen cover is detachably connected to the bottom end of the second ruler arm, and an opening is formed at the bottom end of the marking pen cover;

[0018] A marking pen core is slidably connected in the marking pen sleeve, a step is provided on the marking pen core, and a small end of the marking pen core is arranged corresponding to the opening;

[0019] A first slide groove is provided on the side wall of the marking pen cover, and the first slide groove is arranged along the length direction of the marking pen cover;

[0020] A push rod, slidably connected in the first slide groove, one end of the push rod is fixedly connected to the marking pen core, and the other end passes through the first slide groove;

[0021] A return spring is sleeved on the small end of the marking pen core, the top end of the return spring abuts against the step, and the bottom end of the return spring abuts against the inner bottom wall of the marking pen cover.

[0022] Preferably, an insert block is fixedly connected to the top end of the marking pen cover, and the insert block is detachably connected in the slot, and a limiting component is arranged between the insert block and the slot.

[0023] Preferably, the limiting component comprises:

[0024] A mounting hole is provided on the plug block;

[0025] A ball bearing, slidably connected in the mounting hole;

[0026] A thrust spring is arranged in the mounting hole, one end of the thrust spring is fixedly connected to the bottom of the mounting hole, and the other end of the thrust spring is fixedly connected to the ball;

[0027] The groove is matched with the ball, and the groove is opened on the inner side wall of the slot.

[0028] Preferably, the driving unit comprises:

[0029] A threaded rod, threadedly connected to the second ruler arm, the threaded rod being located at an upper portion of the second ruler arm;

[0030] A second sliding groove is provided on a side of the first ruler arm close to the second ruler arm;

[0031] A sliding plate is slidably connected in the second sliding groove, a through hole is provided in the sliding plate, the axis of the through hole is located on the diameter of the sliding plate, one end of the threaded rod is rotatably connected in the through hole, a limiting groove is provided on the outer side wall of the sliding plate, the limiting groove is coaxially arranged with the through hole, the inner diameter of the limiting groove is larger than the inner diameter of the through hole, a baffle is rotatably connected in the limiting groove, and the baffle is coaxially fixed to the end of the threaded rod;

[0032] A cover plate is fixedly connected to the opening of the second slide groove, the cover plate is provided with a through groove, the through groove is arranged corresponding to the through hole, and the threaded rod is slidably connected in the through groove;

[0033] One end of the threaded rod away from the baffle is fixedly connected with a knob.

[0034] Preferably, the top end of the second ruler arm is arranged as a tip, and the tip is arranged corresponding to the scale surface of the ruler.

[0035] Compared with the prior art, the utility model has the following advantages and technical effects:

[0036] The utility model can ensure the accuracy of the measurement direction by aligning the positioning part with the corneal limbus exposed under the visual field; the required position is measured by changing the reading on the ruler, and after obtaining the required position, the sclera surface is dyed and marked by the marking part, which is convenient and quick, and can avoid the problem of the mark disappearing and requiring repeated operation. The marking part is disposable, which improves the accuracy and convenience of sclera positioning while improving the safety of surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor:

[0038] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0039] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0040] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0041] Figure 4 It is a structural schematic diagram of the positioning part in the utility model;

[0042] Among them, 1. the first ruler arm; 2. the second ruler arm; 3. the ruler; 4. the threaded rod; 5. the knob; 6. the marking pen cover; 7. the rebound spring; 8. the marking pen core; 9. the push rod; 10. the first slide groove; 11. the turntable; 12. the semicircular corneal locator; 13. the second slide groove; 14. the cover plate; 16. the sliding plate; 17. the baffle plate; 18. the through hole; 19. the limit groove; 20. the plug block; 21. the mounting hole; 22. the ball; 23. the thrust spring; 24. the groove; 25. the slot. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0045] Reference Figures 1 to 4 The utility model discloses an eye sclera locator, comprising:

[0046] First ulnar arm 1;

[0047] The middle part of the second ruler arm 2 is hinged to the middle part of the first ruler arm 1;

[0048] A positioning portion, arranged at the bottom end of the first ruler arm 1;

[0049] A marking portion, detachably connected to the bottom end of the second ruler arm 2;

[0050] The scale 3 is fixedly connected to one side of the first scale arm 1, the scale 3 is located at the top of the first scale arm 1, and the scale surface of the scale 3 is arranged corresponding to the second scale arm 2;

[0051] The scale of ruler 3 is 0-20mm, with a measurement accuracy of 0.5mm

[0052] The driving part is arranged on the first ruler arm 1 and is transmission-connected with the second ruler arm 2 .

[0053] To further optimize the solution, the positioning unit includes:

[0054] A turntable 11 is rotatably connected to the top end of the first ruler arm 1;

[0055] The semicircular corneal locator 12 is fixedly connected to the bottom end of the rotating disk 11 , and the semicircular corneal locator 12 is far away from the second ruler arm 2 .

[0056] The semicircular corneal locator 12 is a semicircular ring with a diameter of 13 mm.

[0057] To further optimize the scheme, the marking section includes:

[0058] The marking pen cover 6 is detachably connected to the bottom end of the second ruler arm 2, and an opening is formed at the bottom end of the marking pen cover 6;

[0059] The marking pen core 8 is slidably connected in the marking pen cover 6, and a step is provided on the marking pen core 8, and the small end of the marking pen core 8 is arranged corresponding to the opening;

[0060] The marking pen core 8 is composed of a biological sponge absorbing a non-toxic biological dye such as brilliant blue.

[0061] A first chute 10 is provided on the side wall of the marking pen sleeve 6, and the first chute 10 is provided along the length direction of the marking pen sleeve 6;

[0062] A push rod 9 is slidably connected in the first slide groove 10, one end of the push rod 9 is fixedly connected to the marking pen core 8, and the other end passes through the first slide groove 10;

[0063] The return spring 7 is sleeved on the small end of the marking pen core 8, the top end of the return spring 7 abuts against the step, and the bottom end of the return spring 7 abuts against the inner bottom wall of the marking pen cover 6.

[0064] Push the push rod 9 downward, and the push rod 9 drives the marking pen core 8 to extend from the opening at the bottom end of the marking pen cover 6, and the marking can be completed.

[0065] According to a further optimized solution, an insert block 20 is fixedly connected to the top of the marking pen cover 6 , and the insert block 20 is detachably connected to the slot 25 , and a limiting component is provided between the insert block 20 and the slot 25 .

[0066] To further optimize the solution, the limit components include:

[0067] The mounting hole 21 is provided on the insert block 20;

[0068] The ball 22 is slidably connected in the mounting hole 21;

[0069] A thrust spring 23 is disposed in the mounting hole 21, one end of the thrust spring 23 is fixedly connected to the bottom of the mounting hole 21, and the other end of the thrust spring 23 is fixedly connected to the ball 22;

[0070] The groove 24 is matched with the ball 22 and is formed on the inner wall of the slot 25 .

[0071] When the insert block 20 is inserted into the slot 25, the ball 22 extends into the groove 24 under the action of the thrust spring 23, preventing the insert block 20 from freely escaping from the slot 25; when disassembling, the staff only needs to use a little force to remove the marking pen cover 6.

[0072] To further optimize the solution, the drive unit includes:

[0073] A threaded rod 4 is threadedly connected to the second ruler arm 2, and the threaded rod 4 is located at the upper part of the second ruler arm 2;

[0074] The second slide groove 13 is provided on a side of the first ruler arm 1 close to the second ruler arm 2;

[0075] A sliding plate 16 is slidably connected in the second slide groove 13. A through hole 18 is provided in the sliding plate 16. The axis of the through hole 18 is located on the diameter of the sliding plate 16. One end of the threaded rod 4 is rotatably connected in the through hole 18. A limiting groove 19 is provided on the outer wall of the sliding plate 16. The limiting groove 19 is coaxially arranged with the through hole 18. The inner diameter of the limiting groove 19 is larger than the inner diameter of the through hole 18. A baffle 17 is rotatably connected in the limiting groove 19. The baffle 17 is coaxially fixed to the end of the threaded rod 4.

[0076] The cover plate 14 is fixedly connected to the opening of the second slide groove 13. A through groove is formed on the cover plate 14. The through groove is arranged corresponding to the through hole 18. The threaded rod 4 is slidably connected in the through groove.

[0077] A knob 5 is fixedly connected to one end of the threaded rod 4 away from the baffle 17 .

[0078] The threaded rod 4 is threadedly connected to the second ruler arm 2 by rotating the knob 5, and the threaded rod 4 drives the upper part of the second ruler arm 2 to move; at the same time, the sliding plate 16 is slidably connected in the second slide groove 13, and the threaded rod 4 is rotatably connected in the through hole 18 and the end is fixedly connected with a baffle 17. Such an arrangement allows the first ruler arm 1 and the second ruler arm 2 to be smoothly opened and the position is fixed after opening.

[0079] According to a further optimized solution, the top end of the second ruler arm 2 is set as a tip, and the tip is set corresponding to the scale surface of the ruler 3.

[0080] Specific steps:

[0081] The patient lies supine on the operating table for disinfection and anesthesia. After the anesthesia is completed, the bulbar conjunctiva is cut according to the actual situation of the patient, the eyeball is pulled by the rectus muscle hanging line to expose the sclera, the reading of the ruler 3 is adjusted to the preset measuring distance, the semicircular corneal locator 12 is overlapped with the exposed corneal margin, the first ruler arm 1 is rotated around the rotation axis of the turntable 11, so that the second ruler arm 2 is close to the scleral surface, and after the required scleral position is obtained, the push rod 9 on the second ruler arm 2 is pressed to drive the marking pen core 8 to move downward, forming a pigment mark on the scleral surface, and the positioning mark is completed. The next surgical operation is performed according to the actual situation.

[0082] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0083] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. An eye scleral locator, characterized in that: include: First ulnar arm (1); A second ruler arm (2), the middle portion of which is hinged to the middle portion of the first ruler arm (1); A positioning portion, arranged at the bottom end of the first ruler arm (1); A marking portion, detachably connected to the bottom end of the second ruler arm (2); A ruler (3) is fixedly connected to one side of the first ruler arm (1), the ruler (3) is located at the top of the first ruler arm (1), and the scale surface of the ruler (3) is arranged corresponding to the second ruler arm (2); A driving unit is arranged on the first ruler arm (1) and is transmission-connected to the second ruler arm (2).

2. The eye sclera locator according to claim 1, characterized in that: The positioning portion comprises: A rotating disk (11) rotatably connected to the top end of the first ruler arm (1); A semicircular corneal locator (12) is fixedly connected to the bottom end of the rotating disk (11), and the semicircular corneal locator (12) is far away from the second ruler arm (2).

3. The eye sclera locator according to claim 1, characterized in that: The marking portion comprises: A marking pen cover (6) is detachably connected to the bottom end of the second ruler arm (2), and an opening is formed at the bottom end of the marking pen cover (6); A marking pen core (8) is slidably connected in the marking pen cover (6), a step is provided on the marking pen core (8), and a small end of the marking pen core (8) is arranged corresponding to the opening; A first slide groove (10) is provided on the side wall of the marking pen cover (6), and the first slide groove (10) is arranged along the length direction of the marking pen cover (6); A push rod (9) is slidably connected in the first slide groove (10), one end of the push rod (9) is fixedly connected to the marking pen core (8), and the other end passes through the first slide groove (10); A return spring (7) is sleeved on the small end of the marking pen core (8), the top end of the return spring (7) abuts against the step, and the bottom end of the return spring (7) abuts against the inner bottom wall of the marking pen cover (6).

4. The eye sclera locator according to claim 3, characterized in that: An insert block (20) is fixedly connected to the top end of the marking pen cover (6); the insert block (20) is detachably connected in the slot (25); and a limit position component is arranged between the insert block (20) and the slot (25).

5. The eye sclera locator according to claim 4, characterized in that: The limiting component comprises: A mounting hole (21) is provided on the insert block (20); A ball (22) slidably connected in the mounting hole (21); A thrust spring (23) is arranged in the mounting hole (21), one end of the thrust spring (23) is fixedly connected to the bottom of the mounting hole (21), and the other end of the thrust spring (23) is fixedly connected to the ball (22); The groove (24) is matched with the ball (22), and the groove (24) is opened on the inner side wall of the slot (25).

6. The eye sclera locator according to claim 1, characterized in that: The driving unit comprises: A threaded rod (4) threadedly connected to the second ruler arm (2), the threaded rod (4) being located at the upper part of the second ruler arm (2); A second sliding groove (13) is provided on a side of the first ruler arm (1) close to the second ruler arm (2); A sliding plate (16) is slidably connected in the second sliding groove (13); a through hole (18) is provided in the sliding plate (16); the axis of the through hole (18) is located on the diameter of the sliding plate (16); one end of the threaded rod (4) is rotatably connected in the through hole (18); a limiting groove (19) is provided on the outer wall of the sliding plate (16); the limiting groove (19) is coaxially arranged with the through hole (18); the inner diameter of the limiting groove (19) is larger than the inner diameter of the through hole (18); a baffle (17) is rotatably connected in the limiting groove (19); the baffle (17) is coaxially fixedly connected with the end of the threaded rod (4); A cover plate (14) is fixedly connected to the opening of the second slide groove (13), and a through groove is formed on the cover plate (14), the through groove is arranged corresponding to the through hole (18), and the threaded rod (4) is slidably connected in the through groove; One end of the threaded rod (4) away from the baffle (17) is fixedly connected with a knob (5).

7. The eye sclera locator according to claim 1, characterized in that: The top end of the second ruler arm (2) is arranged as a tip, and the tip is arranged corresponding to the scale surface of the ruler (3).

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