Head fixing device for ophthalmic examination

Abstract

The utility model discloses a head fixing device for ophthalmic examination, which comprises a support and two supporting rods. The restraining assembly comprises a first transverse restraining piece, a second transverse restraining piece, a first vertical restraining piece and a second vertical restraining piece, and the two ends of the first transverse restraining piece and the two ends of the second transverse restraining piece are connected to the two supporting rods correspondingly; the first transverse restraining piece and the second transverse restraining piece are connected through the first vertical restraining piece and the second vertical restraining piece. The first transverse restraining piece, the second transverse restraining piece, the first vertical restraining piece and the second vertical restraining piece define a fixing hole allowing the head to be placed therein. The first transverse restraining piece, the second transverse restraining piece, the first vertical restraining piece and the second vertical restraining piece are all made of elastic materials. The restraint assembly composed of the elastic bands in the staggered directions is used for restraining the movement of the head of a patient in the two directions, meanwhile, the size of the elastic structure can be automatically adjusted, use steps are simplified, the structure is simple, and fixation is firm.

Description

Technical Field

[0001] This utility model relates to the field of ophthalmic examination auxiliary equipment, and in particular to an ophthalmic examination head fixation device. Background Technology

[0002] In various ophthalmological examinations, patients need to have their heads fixed in the head position fixation device of each examination device. Specifically, the chin is placed in the mandibular support and the forehead is pressed against the fixation device. Once the patient's head is fixed in front of the examination instrument, various examinations can begin.

[0003] During the above process, patients may be unable to cooperate by keeping their heads in a fixed position due to pain, or the strong light or blowing air from the instrument may cause them to unconsciously deviate from the sampling area of ​​the instrument, resulting in a large error in the test results.

[0004] Authorization announcement number CN219323418U discloses a head fixation frame for ophthalmic examination, including a head fixation component positioned above a forehead limiting component. The head fixation component includes a first strap, a second strap, and a buckle structure. One end of the first and second straps is movably sleeved on two support rods, and the other end is movably connected to the buckle structure. This technical solution, by placing the head fixation component above the forehead limiting component, secures the patient's head within the head fixation frame during examination, preventing the patient from instinctively withdrawing from the head fixation frame or moving within it.

[0005] In practice, the above-mentioned solution was found to be structurally complex and ineffective in restricting the vertical movement of the head. Utility Model Content

[0006] The present invention aims to at least partially solve one of the technical problems in the aforementioned technologies. Therefore, the objective of this invention is to provide a device with a simple structure that effectively restricts the vertical movement of a patient's head.

[0007] To achieve the above objectives, an embodiment of this utility model provides an ophthalmic examination head fixation device, comprising: a bracket including two support rods; a constraint assembly including a first lateral constraint member, a second lateral constraint member, a first vertical constraint member, and a second vertical constraint member, the two ends of the first lateral constraint member and the second lateral constraint member being respectively connected to the two support rods; the first lateral constraint member and the second lateral constraint member being connected through the first vertical constraint member and the second vertical constraint member; the first lateral constraint member, the second lateral constraint member, the first vertical constraint member, and the second vertical constraint member forming a fixing hole for inserting the head; the first lateral constraint member, the second lateral constraint member, the first vertical constraint member, and the second vertical constraint member are all made of elastic material.

[0008] An ophthalmic examination head fixation device according to an embodiment of the present invention uses a constraint assembly composed of elastic bands in staggered directions. While constraining the movement of the patient's head in two directions, the size of the elastic structure can be adjusted by itself, simplifying the use steps and providing a simple and secure structure.

[0009] In addition, the ophthalmic examination head fixation device proposed in the above embodiments of this utility model may also have the following additional technical features:

[0010] Optionally, the constraint assembly is divided into two parts by a first lateral constraint member and a second lateral constraint member with a breakpoint, and the breakpoint is detachably connected by a connecting element.

[0011] Furthermore, the connecting element is Velcro, snap fastener, or button.

[0012] Optionally, the first lateral constraint member and the second lateral constraint member are fitted onto the support rod via collars located at both ends.

[0013] Furthermore, the support rod is provided with a plurality of annular grooves for the collar to be engaged. Attached Figure Description

[0014] Figure 1 This is a front view of a structure according to an embodiment of the present invention;

[0015] Figure 2 This is a side view of the structure according to an embodiment of the present invention;

[0016] Figure 3 This is a top view of a structure according to an embodiment of the present invention;

[0017] Figure 4 This is a perspective view of the usage state according to an embodiment of the present invention.

[0018] Label Explanation:

[0019] Support rod 1

[0020] First lateral constraint 21 Second lateral constraint 22

[0021] First vertical constraint 23 Second vertical constraint 24

[0022] Fixing hole 25

[0023] Breakpoint 3

[0024] 4. Loop 4, winding tape 41, winding hole 42. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0026] This invention uses a constraint component composed of elastic bands arranged in staggered directions, which not only restricts the movement of the patient's head in two directions, but also allows for self-adjustment of the size of the elastic structure, simplifying the usage steps and providing a simple yet secure structure.

[0027] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0028] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0029] Figures 1 to 4 An ophthalmic examination head fixation device according to an embodiment of the present invention includes:

[0030] The support includes two support rods 1; the support rods 1 can be made of composite materials or metal materials, or can utilize a similar structure already present in the instrument.

[0031] The constraint assembly includes a first lateral constraint member 21, a second lateral constraint member 22, a first vertical constraint member 23, and a second vertical constraint member 24. The two ends of the first lateral constraint member 21 and the second lateral constraint member 22 are respectively connected to two support rods 1. The first lateral constraint member 21 and the second lateral constraint member 22 are connected through the first vertical constraint member 23 and the second vertical constraint member 24.

[0032] The first lateral constraint 21, the second lateral constraint 22, the first vertical constraint 23, and the second vertical constraint 24 form a fixing hole 25 for inserting the head.

[0033] The horizontal and vertical constraints form a grid-like structure. The area in the grid is used to fix the back of the head, so that it can constrain the head in the up, down and left and right directions.

[0034] The first lateral constraint 21, the second lateral constraint 22, the first vertical constraint 23, and the second vertical constraint 24 are all made of elastic material.

[0035] In one specific embodiment, the first lateral constraint 21, the second lateral constraint 22, the first vertical constraint 23, and the second vertical constraint 24 are designed as a single unit. All three parts are elastic strips with a width of 2cm. The first vertical constraint 23 and the second vertical constraint 24 fix the distance between the first lateral constraint 21 and the second lateral constraint 22, allowing the lateral constraint members to deform in coordination. Combined with their own elastic properties, they can effectively adhere to the back of the head, apply force evenly to the head, reduce patient discomfort, and prevent the constraint components from sliding during the head fixation process, which would lead to a decrease in the constraint effect.

[0036] To facilitate adjustment of the restraint assembly's length and the patient's head movement, the restraint assembly can optionally be divided into two parts by a first lateral restraint member 21 and a second lateral restraint member 22 with a break point 3. These parts are detachably connected at the break point 3 via a connecting element; the connecting element can be a Velcro fastener, a snap fastener, or a snap button. Specifically, when not in use, the restraint assembly is disconnected into two parts. Once the patient's head is in position, the first lateral restraint member 21 and the second lateral restraint member 22 are reassembled. The Velcro fastener, with one side being the hook-and-loop side and the other the loop side, is used for adjustment and fixation. For patients with long hair, snap buttons can also be used as a connection method. Alternatively, both snap buttons and Velcro fasteners can be placed at the break point 3, allowing for different connection methods to be selected based on the patient's individual circumstances.

[0037] In daily practice, the restraint assembly, as the part with the largest contact area with the patient, needs to be kept clean through replacement and cleaning. Therefore, optionally, the first lateral restraint member 21 and the second lateral restraint member 22 are fitted onto the support rod 1 via collars 4 at both ends. Furthermore, the support rod 1 is provided with several annular grooves for the collars 4 to engage. The aforementioned solution allows the restraint assembly to be easily removed from the support rod 1, and allows the height and position of the restraint assembly to be adjusted according to different patients' conditions for better fixation.

[0038] In some specific embodiments, the collar 4 can be configured as follows: it consists of a wrapping tape 41 and a wrapping hole 42 through which the wrapping tape 41 passes. The wrapping tape 41 is 0.8 cm wide, with one side being a textured surface and the other side being a hooked surface, which can adhere to the textured surface. The wrapping hole 42 is 1 cm long and 0.5 cm wide. When it is necessary to fix the head to the support, simply wrap the wrapping tape 41 around the support, pass it through the wrapping hole 42, continue to twist and tighten it, and finally secure the hooked surface of the wrapping tape 41 to the textured surface previously wrapped at the bottom, thus completing the fixation of the head. This embodiment can be applied to all ophthalmic examination instruments with supports.

[0039] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0042] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A head fixation device for ophthalmic examination, characterized in that: include The bracket includes two support rods; The constraint assembly includes a first lateral constraint member, a second lateral constraint member, a first vertical constraint member, and a second vertical constraint member. The two ends of the first lateral constraint member and the second lateral constraint member are respectively connected to two support rods. The first lateral constraint and the second lateral constraint are connected by the first vertical constraint and the second vertical constraint; the first lateral constraint, the second lateral constraint, the first vertical constraint and the second vertical constraint form a fixing hole for the head to be inserted therein; The first lateral constraint, the second lateral constraint, the first vertical constraint, and the second vertical constraint are all made of elastic material.

2. The ophthalmic examination head fixation device as described in claim 1, characterized in that: The constraint assembly is divided into two parts by a first lateral constraint member and a second lateral constraint member with a breakpoint, and the breakpoint is detachably connected by a connecting element.

3. The ophthalmic examination head fixation device as described in claim 2, characterized in that: The connecting element is Velcro, snap fastener, or snap button.

4. The ophthalmic examination head fixation device as described in claim 1, characterized in that: The first and second lateral constraint members are fitted onto the support rod via collars located at both ends.

5. The ophthalmic examination head fixation device as described in claim 4, characterized in that: The support rod is provided with several ring grooves for the collar to be inserted into.

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