Eyelid opening device

Abstract

The utility model belongs to the technical field of eyelid opening, and particularly relates to an eyelid opening device. Comprising a main supporting beam, supporting arms are hinged to the upper end and the lower end of the main supporting beam, supporting pliers are fixed to the swing ends of the supporting arms, a through groove is formed in the main supporting beam, a push rod independently penetrates through the through groove, connecting rods are arranged between the supporting arms and the left end of the push rod, and the two ends of the connecting rods are hinged to the supporting arms and the push rod respectively; mounting grooves are formed in the top and the bottom of the push rod, racks swinging inwards and outwards are hinged to the interiors of the mounting grooves, clamping blocks clamped with clamping teeth of the racks are fixed to the left side wall of the main supporting beam, the clamping blocks limit the racks to move rightwards, and elastic components pushing the swinging ends of the racks to swing outwards are arranged in the mounting grooves. The racks are hinged to the two sides of the push rod, the two racks are pressed by one hand, the clamping blocks are separated from clamping teeth of the racks, the push rod is driven to move rightwards accordingly, the supporting pincers are folded, and overall operation is smoother and more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of eyelid opening technology, and in particular relates to an eyelid opening device. Background Technology

[0002] In ophthalmic surgery and examinations, retracting the eyelids is a crucial step to ensure a clear surgical field and ease of operation for the surgeon. Traditional eyelid retractors mostly employ a spiral-driven mechanism, using threads on a push rod to propel a supporting clamp and retract the eyelid. While this method can achieve eyelid retraction to some extent, its inherent limitations result in a slow procedure, impacting surgical efficiency.

[0003] With the continuous development of medical technology, devices have emerged that use push rods to directly move support forceps to open the eyelids. This device achieves rapid eyelid opening through the rapid movement of the push rod, greatly improving surgical efficiency. Simultaneously, to maintain the stability of the support forceps in the opened state, locking teeth are designed on both sides of the push rod, with locking blocks on both sides to lock the push rod in place. However, when it's time to close the support forceps, both hands must simultaneously pull open the locking blocks on both sides to release the lock on the push rod, which is difficult to do with one hand, making the operation rather cumbersome.

[0004] The inconvenience of this operation may not have a significant impact on the overall surgical process, but a smoother operation can effectively reduce surgical risks and improve surgical quality. Therefore, it is necessary to provide a simpler and easier-to-use eyelid retractor. Utility Model Content

[0005] The purpose of this invention is to provide an eyelid opening device that allows for easier release of the locking mechanism of the push rod.

[0006] The eyelid opening device includes a main support beam, with support arms hinged to both the upper and lower ends of the main support beam. Support clamps for opening the eyelids are fixed to the swing ends of the support arms. A through groove is provided on the main support beam, through which a push rod is independently installed. The left end of the push rod passes independently through the through groove and is located between the two support arms. A connecting rod is provided between the support arms and the left ends of the push rod, with both ends of the connecting rod hinged to the support arms and the push rod respectively. Mounting grooves are provided at the top and bottom of the push rod, with racks that swing inwards and outwards hinged within each groove. A locking block is fixed on the left side wall of the main support beam, engaging with the locking teeth of the rack. The locking block restricts the rack's movement to the right. A spring-loaded component is provided in the mounting groove to push the swing end of the rack outwards.

[0007] Furthermore, a push plate is fixed to the left end of the push rod.

[0008] Furthermore, a support plate is fixed on the front side wall of the main support beam.

[0009] Furthermore, the elastic component is a spring sheet, with the fixed end of the spring sheet fixed to the bottom of the mounting groove, and its elastic end abutting against the movable end of the rack.

[0010] Furthermore, both the upper and lower ends of the main support beam are provided with hinge slots, and the hinged end of the support arm is hinged in the hinge slot through a hinge column.

[0011] Furthermore, one end of the connecting rod is hinged to the push rod via a first hinge support, and the other end is hinged to the support arm via a second hinge support.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention features hinged racks on both sides of the push rod. By pressing the two racks with one hand, the locking block disengages from the racks, which in turn moves the push rod to the right, causing the support clamps to close. This makes the overall operation smoother and more convenient. Attached Figure Description

[0014] Figure 1 Here is a schematic diagram of the structure of this utility model:

[0015] Figure 2 for Figure 1 A schematic diagram of the structure viewed from below:

[0016] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 4 for Figure 1 A magnified schematic diagram of the local structure at point A;

[0018] The components in the diagram are named as follows: 1. Main support beam; 2. Hinge column; 3. Support arm; 4. Connecting rod; 5. Support clamp; 6. Rack; 7. Spring plate; 8. Push rod; 9. Push plate; 10. Support plate; 11. Locking block. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0020] Example

[0021] The eyelid opening device described in this embodiment, such as Figures 1 to 4 As shown, it includes a main support beam 1, with support arms 3 hinged to both the upper and lower ends of the main support beam 1. The support arms 3 have a curved structure, as shown in the figure. Figure 1As shown. Both the upper and lower ends of the main support beam 1 are provided with hinge slots. The hinged end of the support arm 3 is hinged in the hinge slot through the hinge column 2. The swing end of the support arm 3 is fixed with a support clamp 5 for opening the eyelid. The support clamp 5 is existing technology and is one of the essential components in eyelid surgery. It is mainly made of bent steel wire. A through slot is provided on the main support beam 1, which has a rectangular cross-section. A push rod 8, also rectangular in cross-section, is independently installed within the through slot. The left end of the push rod 8 passes independently through the through slot between two support arms 3. A connecting rod 4 is provided between the support arms 3 and the left end of the push rod 8. The two ends of the connecting rod 4 are hinged to the support arms 3 and the push rod 8, respectively. There are two connecting rods 4: one end of the lower connecting rod 4 is hinged to the inner wall of the lower support arm 3, and the other end is hinged to the bottom of the left end of the push rod 8; one end of the upper connecting rod 4 is hinged to the inner wall of the support arm 3, and the other end is hinged to the top of the left end of the push rod 8. During operation, the push rod 8 slides to the left, and the support arms 3 swing outwards under the action of the two connecting rods 4. Here, "outside" refers to the side other than the two support arms 3, and "inside" refers to the side between the two support arms 3. One end of the connecting rod 4 is hinged to the push rod 8 via a first hinge support, and the other end is hinged to the support arm 3 via a second hinge support.

[0022] like Figure 1 As shown, the push rod 8 has mounting grooves at both the top and bottom. The left side wall of the mounting groove is located between the left side of the through groove and the first hinge support. The right side of the mounting groove is connected to the right end of the push rod 8. Corresponding to the mounting groove, the cross-section of the push rod 8 is an "I" shaped structure. A rack 6 that swings inward and outward is hinged in the mounting groove. The inner and outer sides of this are respectively: when the rack 6 swings inward into the mounting groove, it is inward; when it swings outward from the mounting groove, it is outward.

[0023] like Figure 1 and Figure 4 As shown, a locking block 11 is fixed on the left side wall of the main support beam 1, which engages with the locking teeth of the rack 6. The locking block 11 restricts the rack 6 from moving to the right. The outer side wall of the rack 6 is provided with locking teeth, which are sawtooth-shaped. A locking block 11 is fixed on the left side wall of the main support beam 1 corresponding to the outer side of each rack 6. When the locking block 11 engages with the locking teeth of the rack 6, the locking block 11 restricts the rack 6 from moving to the right, thereby restricting the push rod 8 from moving to the right and maintaining the support clamp 5 in the open state of the patient's eyelid.

[0024] A spring plate 7 is installed inside the mounting groove to push the swing end of the rack 6 outward. The fixed end of the spring plate 7 is fixed to the bottom of the mounting groove, and its elastic end abuts against the movable end of the rack 6. In its natural state, the retaining teeth on the rack 6 engage with the retaining block 11. In addition to the spring plate 7, a spring can also be installed between the mounting groove and the swing end of the rack 6, which will push the rack 6 to swing outward. Both the spring plate 7 and the spring are elastic components.

[0025] like Figure 3 As shown, a push plate 9 is fixed to the left end of the push rod 8; when the push rod 8 is pushed to the left, the push plate 9 provides a larger contact area, which is more conducive to the doctor's operation during surgery. The swing end of the rack 6 is close to the left side wall of the push plate 9, and the distance between the two is less than the width of a finger;

[0026] A support plate 10 is fixed to the front wall of the main support beam 1. During the pushing of the push plate 9, the main support beam 1 must remain relatively fixed. Therefore, while pressing the push plate 9, the doctor must also use one finger to support the support plate 10, bringing the push plate 9 and the support plate 10 closer together. The support plate 10 has anti-slip textures to increase friction between the doctor's fingers and the support plate 10, preventing slippage.

[0027] In actual use: Pushing the push rod 8 to the left slides the two support clamps 5 open the patient's upper and lower eyelids respectively. The spring plate 7 is in its natural state. The rack 6 cooperates with the locking block 11, so that the rack 6 can only move to the left and cannot move to the right. After the support clamps 5 open the patient's upper and lower eyelids, they always maintain the open state. When releasing the lock between the locking block 11 and the rack 6, the surgeon presses the swing end of one rack 6 with his thumb and the swing end of the other rack 6 with his middle and index fingers. Pressing on both sides at the same time, the two racks 6 swing inward and retract into the mounting slot. The locking block 11 disengages from the locking teeth of the rack 6. At the same time, the hand pulls to the right. The push plate 9 supports the fingers to prevent slippage. The surgeon's other hand can be used to hold the main support beam 1 to prevent wobbling. Therefore, the two support clamps 5 close. The overall operation process is simple and convenient, the working steps are smoother, and the use is more convenient. Small changes can make the operation process smoother.

Claims

1. An eyelid opening device, comprising a main support beam (1), with support arms (3) hinged to both the upper and lower ends of the main support beam (1), and support clamps (5) for opening the eyelids fixed to the swing ends of the support arms (3), a through groove is provided on the main support beam (1) with the left and right sides communicating, and a push rod (8) is independently installed in the through groove, with the left end of the push rod (8) independently passing through the through groove and located between the two support arms (3), and a connecting rod (4) is provided between the left ends of the support arms (3) and the push rod (8), with the two ends of the connecting rod (4) respectively hinged to the support arms (3) and the push rod (8), characterized in that: The push rod (8) has mounting grooves at its top and bottom. A rack (6) that swings inward and outward is hinged in the mounting groove. A locking block (11) that engages with the locking teeth of the rack (6) is fixed on the left side wall of the main support beam (1). The locking block (11) restricts the rack (6) from moving to the right. An elastic component that pushes the swing end of the rack (6) to swing outward is provided in the mounting groove.

2. The eyelid opening device according to claim 1, characterized in that: A push plate (9) is fixed to the left end of the push rod (8).

3. The eyelid opening device according to claim 1, characterized in that: A support plate (10) is fixed on the front side wall of the main support beam (1).

4. The eyelid opening device according to claim 1, characterized in that: The elastic component is a spring sheet (7), the fixed end of which is fixed to the bottom of the mounting groove, and its elastic end abuts against the movable end of the rack (6).

5. The eyelid opening device according to claim 1, characterized in that: The main support beam (1) has hinge slots at both the upper and lower ends, and the hinge end of the support arm (3) is hinged in the hinge slot through the hinge column (2).

6. The eyelid opening device according to claim 1, characterized in that: One end of the connecting rod (4) is hinged to the push rod (8) through a first hinge support, and the other end is hinged to the support arm (3) through a second hinge support.

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