Head fixing and supporting device for slit lamp

Abstract

The utility model relates to the technical field of slit lamps, in particular to a head fixing and supporting device for a slit lamp, which comprises a bottom plate, symmetrical supporting blocks are further arranged at the top of the bottom plate, an adjusting frame is arranged at the tops of the two supporting blocks, screw rods are rotatably arranged in the two supporting blocks, and the adjusting frame is connected with the screw rods. The screw rods are vertically arranged in the supporting block, the two screw rods are in threaded connection with the same lower jaw supporting block, a first mounting block is arranged at one end of the lower jaw supporting block, a storage rod is rotatably arranged on the first mounting block, the storage rod is vertically arranged, and a binding belt is wound on the outer portion of the storage rod. A second mounting block is arranged at the other end of the lower jaw supporting block, a limiting cylinder and an adjusting rod are arranged on the upper surface of the second mounting block, the lower end of the adjusting rod is rotationally arranged in the limiting cylinder, the adjusting rod is vertically arranged, and the other end of the binding belt is wound around the upper end of the adjusting rod.

Description

Technical Field

[0001] The utility model relates to a slit lamp in the technical field, in particular to a head fixing support device for a slit lamp. Background Art

[0002] The slit lamp, also known as the slit lamp biomicroscope, is a commonly used optical instrument in ophthalmology. Its principle is to illuminate the eye through a slit. Because it is a narrow slit of light, it is called a "light knife." This "light knife" shines light into the eye, creating an optical section that clearly reveals even subtle lesions in the different layers of the refractive media and deep tissues, allowing for observation of the health of various parts of the eye.

[0003] The patent document with publication number CN214387428U discloses a support assembly for a slit lamp and a slit lamp, which belong to the field of medical device technology, wherein the support assembly for the slit lamp includes: a base; a mobile platform, which is arranged on the base, and the mobile platform has a moving surface that can move relative to the base along the XY direction; a support rod, which is vertically connected to the moving surface of the mobile platform, and the top of the support rod is connected to a bracket through a universal hinge structure, and the bracket is suitable for arranging a photographing device and a slit lamp; the support assembly for the slit lamp of the utility model is used to support the slit lamp and the photographing device through the bracket, and the bracket is connected to the support rod through a universal hinge structure, so that the bracket can be rotated at any angle on the support rod, thereby adjusting the angle of the slit lamp and the photographing device in a wide range to meet the shooting needs of the crowd.

[0004] In the above patent document, the patient's head is supported on the top of the chin rest for examination or treatment. However, most patients will unconsciously tilt their heads backward when placing their heads on the top of the chin rest, and it cannot be fixed well, resulting in the medical staff being unable to accurately focus on the patient's eyes. Multiple adjustments and adaptations are required to cooperate with the medical staff in eye examinations, which affects the efficiency of examination and treatment. Utility Model Content

[0005] In response to the above problems, a head fixing support device for a slit lamp is provided. The adjusting rod is rotated to drive the restraint belt to be retracted. While retracting, the restraint belt fixes the patient's head to prevent the patient's head from unconsciously tilting backward during eye examination or treatment. The adjusting rod also drives the turntable to rotate when it rotates, and the turntable also drives the internal clamping block to rotate when it rotates. The clamping block and spring work in conjunction with the positioning disk to prevent the adjusting rod from self-reversing after rotation, thereby preventing the restraint belt outside the adjusting rod from loosening.

[0006] In order to solve the problems of the prior art, the utility model provides a head fixing support device for a slit lamp, comprising: a base plate, a symmetrical support block is further provided on the top of the base plate, an adjustment frame is provided on the top of the two support blocks, a screw is rotatably provided inside the two support blocks, the screw is vertically arranged inside the support block, the two screws are threadedly connected to the same mandibular support block, a first mounting block is provided at one end of the mandibular support block, a storage rod is rotatably provided on the first mounting block, and the storage rod is vertically arranged, a restraint belt is wrapped around the outside of the storage rod, a second mounting block is provided at the other end of the mandibular support block, a limiting cylinder and an adjustment rod are provided on the upper surface of the second mounting block, the lower end of the adjustment rod is rotatably provided in the limiting cylinder, and the adjustment rod is vertically arranged, and the upper end of the adjustment rod is wrapped around the other end of the restraint belt.

[0007] Preferably, a turntable is rotatably provided inside the limiting cylinder, the upper surface of the turntable is connected to the bottom of the adjusting rod and is coaxially arranged, and a plurality of blocks are rotatably provided on the upper surface of the turntable. When viewed from above, the rotation axes of the plurality of blocks are evenly located on the same circumference with the axis of the turntable as the center, and a spring is provided on the side wall of the block, one end of the spring is connected to the end of the block away from its rotation axis, and the other end of the spring is connected to the turntable.

[0008] Preferably, a positioning plate is provided above the limiting cylinder, and the lower surface of the positioning plate is provided with the same number of positioning rods as the blocking blocks, each blocking block corresponds to a positioning rod, the positioning rod extends downward, and the positioning plate can move up and down. When the positioning plate is at the lowest point, the outer end of the blocking block can rest on the positioning rod; when the blocking block rests on the positioning rod, the spring always has the force to make the blocking block rest on the positioning rod.

[0009] Preferably, the tops of the two screws extend into the adjustment frame and are provided with a first bevel gear. A rotating rod is provided inside the adjustment frame for rotation, and the rotating rod is laterally arranged inside the adjustment frame. Second bevel gears meshing with the first bevel gear are respectively provided at both ends of the rotating rod.

[0010] Preferably, a worm gear is provided on the rotating rod, and a worm engaged with the worm gear is rotatably provided inside the regulating frame.

[0011] Preferably, a sponge pad is provided at the position of the mandibular support block for supporting the mandible.

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

[0013] 1. By rotating the adjustment rod, the restraint belt retracts, which simultaneously secures the patient's head, preventing the head from unconsciously tipping backward during an eye examination and allowing for better focus on the patient's eyes during examination or treatment. Rotating the adjustment rod also rotates the turntable, which in turn rotates the internal block. The block and spring work in conjunction with the positioning rod at the bottom of the positioning disk to prevent the adjustment rod from reversing after rotation, preventing the restraint belt from loosening.

[0014] 2. The worm drives the worm wheel and the rotating rod to rotate, and the rotating rod also drives the second bevel gear to rotate. The second bevel gear cooperates with the first bevel gear to drive the screw to rotate, thereby driving the mandibular support block outside the thread to move up and down, which is convenient for adapting to more patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic diagram of the overall structure of a head fixing support device for a slit lamp.

[0016] Figure 2 The present invention is a side view schematic diagram of the structure of a head fixing support device for a slit lamp.

[0017] Figure 3 The present invention is a schematic diagram of the structure of a screw in a head fixing support device for a slit lamp.

[0018] Figure 4 The present invention is a schematic diagram of the structure of a worm gear and a worm in a head fixing support device for a slit lamp.

[0019] Figure 5 The present invention is a structural schematic diagram of an adjustment rod in a head fixing support device for a slit lamp.

[0020] Figure 6 The present invention is a schematic diagram of the enlarged structure of position A in a head fixing support device for a slit lamp.

[0021] The numbers in the figure are: 1. Base plate; 2. Slit lamp body; 3. Support block; 4. Adjustment frame; 5. Worm; 6. Strap; 7. Mandibular support block; 8. First mounting block; 9. Second mounting block; 10. Storage rod; 11. Adjustment rod; 12. Screw; 13. First bevel gear; 14. Second bevel gear; 15. Turntable; 16. Worm gear; 17. Block; 18. Spring; 19. Positioning plate; 20. Turntable; 21. Limit cylinder; 22. Positioning rod. DETAILED DESCRIPTION

[0022] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] like Figures 1 to 6 As shown, the utility model provides:

[0024] A head fixing support device for a slit lamp comprises a base plate 1, a slit lamp body 2 being disposed on the top of the base plate 1, symmetrical support blocks 3 being further disposed on the top of the base plate 1, an adjustment frame 4 being disposed on the tops of the two support blocks 3, a screw 12 being rotatably disposed inside each of the two support blocks 3, the screw 12 being disposed vertically and having its upper end extending into the adjustment frame 4, a chin support block 7 being threadedly connected to the two screws 12, a first mounting block 8 being disposed at one end of the chin support block 7, a storage rod 10 being rotatably disposed on the first mounting block 8, the storage rod 10 being disposed vertically, and a restraining strap 6 being wrapped around the outside of the storage rod 10, a second mounting block 9 being disposed at the other end of the chin support block 7, a limit cylinder 21 and an adjustment rod 11 being disposed on the top of the second mounting block 9, the adjustment rod 11 being disposed vertically and having its lower end rotatably disposed within the limit cylinder 21, the upper end of the adjustment rod 11 being wrapped around the other end of the restraining strap 6. The slit lamp body is conventional.

[0025] By rotating the adjustment rod 11, the restraint belt 6 is driven to retract, and the restraint belt 6 will fix the patient's head while retracting, preventing the patient's head from unconsciously tilting backwards during eye examination or treatment, and better focusing on the patient's eyes during examination or treatment.

[0026] At the same time, one end of the restraint belt 6 connected to the adjustment rod 11 can be provided with a quick release to facilitate the removal of the restraint belt 6.

[0027] like Figure 6 As shown, a turntable 20 is rotatably provided inside the limiting cylinder 21. The upper surface of the turntable 20 is connected to the lower end of the adjusting rod 11 and is coaxially arranged. A plurality of blocks 17 are rotatably provided on the upper surface of the turntable 20. When viewed from above, the rotation axes of the plurality of blocks 17 are evenly located on the same circumference with the axis of the turntable 20 as the center. A spring 18 is provided on the side wall of the block 17. One end of the spring 18 is connected to the end of the block 17 away from its rotation axis, and the other end of the spring 18 is connected to the turntable 20.

[0028] The adjusting rod 11 drives the rotating disk 20 to rotate, and the rotating disk 20 also drives the internal block 17 to rotate, causing the restraining strap 6 outside the adjusting rod 11 to loosen. A torsion spring (not shown) can be provided between the storage rod 10 and the first mounting block 8, and the torsion spring has a tendency to rotate the storage rod 10 in the direction of storing the restraining strap 6.

[0029] like Figure 6As shown, a positioning disc 19 is provided above the limiting cylinder 21. The lower surface of the positioning disc 19 is provided with the same number of positioning rods 21 as the blocks 17. Each block 17 corresponds to a positioning rod 21. The positioning rods 21 extend downward, and the positioning disc 19 can move up and down. When the positioning disc 19 is at the lowest point, the outer end of the block 17 can abut against the positioning rod 21. The positioning rod 21 prevents the adjustment rod 11 from rotating in the direction of loosening the restraint 6. When the restraint needs to be released, the positioning disc 19 is moved upward a distance to disengage the block 17 from the positioning rod 21. When the block 14 abuts against the positioning rod 21, the spring 18 always has the force to keep the block 17 against the positioning rod 21.

[0030] like Figure 4 As shown, the tops of the two screw rods 12 extend to the adjusting frame 4 and are provided with a first bevel gear 13. A rotating rod 15 is provided inside the adjusting frame 4 for rotation, and the rotating rod (15) is transversely arranged inside the adjusting frame (4). A second bevel gear 14 meshing with the first bevel gear 13 is provided outside the rotating rod 15.

[0031] The second bevel gear 14 cooperates with the first bevel gear 13 to drive the screw 12 to rotate, thereby driving the chin support block 7 outside the thread to move up and down, so as to accommodate more patients.

[0032] like Figure 4 As shown, a worm gear 16 is provided on the outside of the rotating rod 15, and a worm 5 is provided inside the adjusting frame 4 for engagement with the worm gear 16. The worm gear 16 and the rotating rod 15 are rotated by rotating the worm 5.

[0033] like Figure 3 As shown, a sponge pad is provided at the position of the jaw support block 7 for supporting the jaw.

[0034] The sponge pad can make the patient more comfortable during the examination.

[0035] Working principle: When the patient's eyes need to be examined, the patient is asked to place his lower jaw on the top of the lower jaw support block 7, and then the adjusting rod 11 is rotated to drive the restraint belt 6 to be retracted. While retracting, the restraint belt 6 will fix the patient's head to prevent the patient's head from unconsciously falling backwards during the eye examination, so as to better focus the patient's eyes during the examination or treatment. When the adjusting rod 11 is rotated, it will also drive the turntable 20 to rotate, and when the turntable 20 is rotated, it will also drive the card block 17 inside it to rotate. The card block 17 and the spring 18 work in conjunction with the positioning rod 22 at the bottom of the positioning disk 19 so that the adjusting rod 11 cannot self-reflect after rotation. Rotate to prevent the restraining belt 6 outside the adjusting rod 11 from loosening. After fixing the patient's head, the worm 5 can be rotated, and the worm 5 can be used to drive the worm wheel 16 and the rotating rod 15 to rotate. While rotating, the rotating rod 15 will also drive the second bevel gear 14 to rotate. The second bevel gear 14 can be used to cooperate with the first bevel gear 13 to drive the screw 12 to rotate, thereby driving the mandibular support block 7 outside the thread to move up and down, which is convenient for accommodating more patients. When the examination is completed, you only need to move the positioning plate 19 upward so that the positioning rod 22 at the bottom of the positioning plate 19 is out of contact with the block 17. At this time, the patient can easily break away from the contact with the mandibular support block 7.

[0036] The above embodiments merely illustrate one or several implementations of the head-fixing support device for a slit lamp according to the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that variations and improvements are possible within the scope of the present invention, as would be apparent to those skilled in the art. These variations and improvements fall within the scope of the present invention. Therefore, the scope of the present invention shall be determined by the appended claims.

Claims

1. A head fixing support device for a slit lamp, characterized in that: include: The bottom plate is also provided with a symmetrical support block on the top of the bottom plate, and an adjustment frame is provided on the top of the two support blocks, and screws are rotatably provided inside the two support blocks, and the screws are vertically arranged inside the support blocks. The two screws are threadedly connected to the same mandible support block, and a first mounting block is provided at one end of the mandible support block, and a storage rod is rotatably provided on the first mounting block, and the storage rod is vertically arranged, and a restraining belt is wrapped around the outside of the storage rod, and a second mounting block is provided at the other end of the mandible support block, and a limiting cylinder and an adjusting rod are provided on the upper surface of the second mounting block, and the lower end of the adjusting rod is rotatably provided in the limiting cylinder, and the adjusting rod is vertically arranged, and the upper end of the adjusting rod is wrapped with the other end of the restraining belt.

2. A head fixing support device for a slit lamp according to claim 1, characterized in that: A turntable is rotatably provided inside the limiting cylinder, the upper surface of the turntable is connected to the bottom of the adjusting rod and is coaxially arranged, and a plurality of blocks are rotatably provided on the upper surface of the turntable. When viewed from above, the rotation axes of the plurality of blocks are evenly located on the same circumference with the axis of the turntable as the center, and a spring is provided on the side wall of the block, one end of the spring is connected to the end of the block away from its rotation axis, and the other end of the spring is connected to the turntable.

3. A head fixing support device for a slit lamp according to claim 2, characterized in that: A positioning plate is provided above the limiting cylinder, and the lower surface of the positioning plate is provided with positioning rods with the same number as the card blocks, each card block corresponds to a positioning rod, the positioning rod extends downward, and the positioning plate can move up and down. When the positioning plate is at the lowest point, the outer end of the card block can abut against the positioning rod; when the card block abuts against the positioning rod, the spring always has the force to make the card block abut against the positioning rod.

4. A head fixing support device for a slit lamp according to claim 3, characterized in that: The tops of the two screws extend into the adjustment frame and are provided with a first bevel gear. A rotating rod is provided inside the adjustment frame for rotation, and the rotating rod is laterally arranged inside the adjustment frame. The two ends of the rotating rod are respectively provided with a second bevel gear meshing with the first bevel gear.

5. The head fixing support device for a slit lamp according to claim 4, characterized in that: A worm wheel is provided on the rotating rod, and a worm engaged with the worm wheel is rotatably provided inside the regulating frame.

6. The head fixing support device for a slit lamp according to claim 1, characterized in that: A sponge pad is provided at the position of the mandibular support block for supporting the mandible.

Images