Head retention device for medical ophthalmic examination

Abstract

The invention relates to the technical field of medical equipment, and discloses a head retention device for medical ophthalmologic examination, comprising: a medical bed for providing a patient lying space for subsequent fixing operation; the adjusting mechanism is arranged on the upper side of the medical bed and used for supporting the head of the patient and can be adjusted according to the size of the head of the patient; the turnover mechanism is arranged on the upper side of the medical bed, connected with the adjusting mechanism and capable of being driven simultaneously or independently along with the adjusting mechanism, and the turnover mechanism can turn over when being independently driven, so that the head of the patient is fixed; and the locking mechanism is arranged on the outer side of the adjusting mechanism and used for locking the adjusting mechanism and the turnover mechanism so as to keep the clamping effect. Through the combined design of the adjusting mechanism, the turnover mechanism and the locking mechanism, the head fixing stability and flexibility and the use comfort of a patient are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a head retaining device for medical ophthalmological examination. Background Art

[0002] In medical ophthalmological examinations, the stability of the patient's head directly affects the accuracy of the examination and the smoothness of the operation. Especially during precision examinations or treatments, slight movements of the head may lead to deviations in diagnostic results or failures in operations. Therefore, it is particularly important to design a device that can firmly fix the patient's head and adapt to the needs of different patients. At the same time, the operating efficiency of the examination equipment and the patient's comfort experience are also key factors that need to be taken into account during the medical care process.

[0003] Most of the existing head retention devices are based on mechanical clamping structures, which support and restrain the head through simple fixed splints. These devices usually have a certain strength and reliability, and can provide basic stability for examinations. In addition, some devices also allow medical staff to adjust the angle or position of the head support within a certain range through the design of adjustment components to meet different examination requirements. Such technology brings convenience to medical operations and reduces the manual assisted adjustment time of medical staff.

[0004] However, existing head fixation devices still have some shortcomings. First, the adjustment range is usually limited and cannot effectively adapt to the size and shape of different patients' heads. In certain cases, clamping too loosely or too tightly may lead to poor support effects or even head displacement problems. Second, many devices can only provide basic fixation functions and lack flipping or dynamic adjustment mechanisms. In examinations that require adjustment of the head angle, medical staff often need to operate manually, which is time-consuming and easy to cause discomfort to patients. In addition, existing devices usually adopt a fixed connection method, and tools are required during the disassembly and assembly process, which is time-consuming. Finally, the locking design of the adjustment component in the existing technology is not reliable enough, and it is easy to loosen or shift during the fixation process, and the safety and effectiveness of the examination cannot be guaranteed. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a head retaining device for medical ophthalmic examination, which solves the problems of the prior art devices such as limited adjustment range, inconvenient operation, unstable fixation and lack of comfort.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A head retention device for medical ophthalmological examination, comprising:

[0007] Medical bed, used to provide patients with a space to lie flat for subsequent fixation operations;

[0008] An adjustment mechanism, which is arranged on the upper side of the medical bed, is used to support the patient's head and can be adjusted according to the size of the patient's head;

[0009] A turning mechanism, which is arranged on the upper side of the medical bed, is connected to the adjusting mechanism and can be driven simultaneously with the adjusting mechanism or driven separately. When the turning mechanism is driven separately, it can turn over, thereby completing the fixation of the patient's head;

[0010] A locking mechanism, which is arranged on the outside of the adjusting mechanism and is used to lock the adjusting mechanism and the flipping mechanism to maintain the clamping effect;

[0011] The installation mechanism is arranged on the upper side of the medical bed and is used to complete the installation and disassembly of the adjustment mechanism, so as to facilitate the removal of the device for maintenance or replacement, and at the same time, the device can be quickly installed on different medical beds for use.

[0012] Preferably, the adjustment mechanism includes a headrest, which is installed on the upper side of the medical bed, and the headrest consists of two pads to provide a head placement area, and the middle part of the headrest is rotatably connected to a worm, and the middle part of the headrest is rotatably connected to a worm wheel, the worm and the worm wheel are meshingly connected, and the middle part of the worm wheel is fixedly connected to a two-way screw, and the outer peripheries of both ends of the two-way screw are respectively threadedly connected to nut seats, and the upper side of the nut seat is fixedly connected to a connecting plate, the middle part of the connecting plate is slidably connected to a support rod, and the outer periphery of the support rod is fixedly connected to a splint, and rubber pads are fixedly connected to the adjacent sides of the two splints, and the outer periphery of the support rod is rotatably connected to a slider, and the slider is slidably connected to the upper side of the headrest, and the top of the headrest is fixedly connected to a gasket.

[0013] Preferably, the flipping mechanism includes a connecting sleeve, the connecting sleeve is fixedly connected to one end of the worm gear, the connecting sleeve is slidably connected to a driving rod, the driving rod is slidably connected to the middle part of the worm gear, the outer periphery of the driving rod is fixedly connected to a connecting block, the connecting block and the connecting sleeve are plug-matched, the connecting block is fixedly connected to a protrusion on a side away from the connecting sleeve, and the other side of the protrusion is fixedly connected to a baffle, the headrest is internally rotatably connected to two pay-off wheels, the driving rod and the protrusion are both slidably connected to the middle part of the pay-off wheels, the outer sides of the two pay-off wheels are fixedly connected to elastic pull ropes, the other ends of the elastic pull ropes are fixedly connected to a connecting rod, the two connecting rods are respectively rotatably connected to the middle parts of the two sliding blocks, the end of the support rod close to the connecting plate is fixedly connected to a half gear, the interior of the connecting plate is fixedly connected to a rack plate, and the half gear and the rack plate are meshingly connected.

[0014] Preferably, the locking mechanism includes a rotating cylinder, which is fixedly connected to the end of the worm away from the connecting sleeve, a fixed block is fixedly connected to the outer side of the headrest, a return spring is fixedly connected to the inside of the fixed block, the other end of the return spring is fixedly connected to a disk, a pull rod is fixedly connected to the middle of the disk, and the pull rod and the rotating cylinder are plug-in fit.

[0015] Preferably, the mounting mechanism includes two positioning blocks, which are respectively fixedly connected to the two outer sides of the headrest, and a plurality of positioning grooves are provided on the upper sides of the positioning blocks. Two mounting plates are fixedly installed on the upper side of the medical bed, and the positioning block is slidably connected to the middle part of the mounting plate. Two supporting seats are fixedly connected to the upper side of the mounting plate, and a pressure plate is rotatably connected between the two supporting seats. A clockwork spring is fixedly connected to the inside of the support seat, and the other end of the clockwork spring is fixedly connected to the outside of the pressure plate. A rotating rod is slidably connected to the middle part of the pressure plate, and a clamping block is rotatably connected to the outer periphery of the rotating rod, and the clamping block is slidably connected to the middle part of the mounting plate, and the clamping block is plug-fitted with one of the positioning grooves.

[0016] Preferably, a plurality of grooves are provided on the outer circumference of the rotating drum, and the pull rod is plug-fitted into one of the grooves.

[0017] Preferably, a locking groove is provided on a side of the connecting sleeve close to the connecting block, and the connecting block is slidably connected to the middle part of the locking groove.

[0018] Preferably, one end of the driving rod away from the connecting block is fixedly connected to a handle, and an anti-slip groove is provided on the outer side of the handle.

[0019] Preferably, a roller is rotatably connected inside the headrest, and the elastic pull cord and the roller are in rolling contact.

[0020] The present invention also provides a method for using a head retaining device for medical ophthalmological examination, comprising the following steps:

[0021] Step 1: Pull the pull rod to move the disc upward to compress the reset spring and release the lock on the rotating drum. At this time, the pay-off wheel is rotated by rotating the driving rod, and the connecting block drives the worm to rotate. When the worm rotates, the worm wheel can drive the bidirectional screw to rotate, so that the nut seat belt connecting plate, the support rod and the splint move, so that the two splints are close to each other and moved to the vicinity of the affected head. When the pay-off wheel rotates, the elastic drawstring is rolled up. At this time, the loose elastic drawstring can be tightened to prevent the elastic drawstring from being entangled. Finally, the pull rod is released to reset the reset spring and squeeze the disc, so that the pull rod is bounced into the rotating drum to complete the restriction of the worm.

[0022] Step 2: When the position adjustment of the splint is completed, the connecting block and the connecting sleeve are separated by pressing the driving rod, and the driving rod is rotated after separation, so that the pay-off wheel rotates alone. At this time, the elastic pull rope is continuously wound up to move with the connecting rod, so that the splint is moved closer to the patient's head again. At this time, since the connecting plate cannot move, the support rod can be moved when the splint moves, and the support rod can drive the splint to flip over through the cooperation of the half gear and the rack plate, thereby completing the fixing operation, and finally the driving rod is pulled to connect the connecting block and the connecting sleeve, so that the clamping position of the device can be fixed;

[0023] When the device needs to be removed for maintenance or replaced and installed on a different medical bed, the pressure plate is first pressed and the clockwork spring is twisted and compressed when it rotates. At the same time, since the block only moves vertically, the rotating rod is pulled in the pressure plate during the tilting of the pressure plate, thereby separating the block and the positioning groove. At the same time, when one side of the pressure plate is pressed until it contacts the mounting plate, the block is in the middle of the mounting plate and has not detached. At this time, the sliding headrest will remove or install the device.

[0024] The present invention provides a head retaining device for medical ophthalmological examination, which has the following beneficial effects:

[0025] 1. The present invention uses an adjustment mechanism to make the splint suitable for different head sizes. During the adjustment, the flip mechanism can be driven to move simultaneously. After the adjustment is completed, the flip mechanism can be driven alone. The head can be accurately fixed by the cooperation of the elastic pull rope and the wire release wheel. This design not only meets the needs of multiple scenarios, but also reduces the pressure on patients.

[0026] 2. The locking mechanism can be used to lock the adjusting mechanism and the flipping mechanism individually or simultaneously, thereby ensuring the fixing effect of the device.

[0027] 3. The installation mechanism can be used to quickly disassemble and assemble the device, and it is also compatible with medical beds of different specifications. No tools are required, and installation or removal can be completed by pressing. This design completely changes the cumbersome and time-consuming situation of existing devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A perspective view of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the splint of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the bidirectional screw rod of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the regulating mechanism of the present invention;

[0032] Figure 5It is a structural schematic diagram of the turning mechanism of the present invention;

[0033] Figure 6 It is a schematic diagram of the connection block structure of the present invention;

[0034] Figure 7 It is a structural schematic diagram of the locking mechanism of the present invention;

[0035] Figure 8 It is a structural schematic diagram of the installation mechanism of the present invention.

[0036] Among them, 10, medical bed; 20, adjustment mechanism; 201, worm; 202, worm wheel; 203, two-way screw; 204, nut seat; 205, connecting plate; 206, support rod; 207, splint; 208, rubber pad; 209, headrest; 210, gasket; 211, slider; 30, flip mechanism; 301, connecting sleeve; 302, driving rod; 303, connecting block; 304, bump; 305, baffle; 306, release The wire wheel; 307, elastic pull rope; 308, connecting rod; 310, half gear; 311, rack plate; 40, locking mechanism; 401, rotating drum; 402, fixing block; 403, reset spring; 404, disc; 405, pull rod; 50, installation mechanism; 501, positioning block; 502, positioning groove; 503, installation plate; 504, support seat; 505, spring; 506, pressure plate; 507, rotating rod; 508, clamping block. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Please see attached Figure 1 -Attached Figure 8 The embodiment of the present invention provides a head retaining device for medical ophthalmic examination, comprising:

[0039] The medical bed 10 is used to provide a space for the patient to lie flat for subsequent fixation operations;

[0040] The design of the medical bed 10 not only provides stable support, but also improves the patient's comfort and the adaptability of the device through the optimization of materials and functions;

[0041] An adjustment mechanism 20, which is disposed on the upper side of the medical bed 10, is used to support the patient's head and can be adjusted according to the size of the patient's head;

[0042] The adjustment mechanism 20 can not only adjust the clamping size to meet the needs of different patients, but also ensure stability during the adjustment process to avoid displacement or sliding of the head;

[0043] The turning mechanism 30 is arranged on the upper side of the medical bed 10, and is connected to the adjusting mechanism 20. The turning mechanism 30 can be driven simultaneously with the adjusting mechanism 20 or driven alone. When driven alone, the turning mechanism 30 can turn over, thereby fixing the patient's head.

[0044] The design of the flip mechanism 30 improves the operational flexibility of the device, enabling it to meet the diverse needs of head fixation in different scenarios, while also improving the comfort and safety of the patient during fixation;

[0045] A locking mechanism 40, which is disposed outside the adjusting mechanism 20 and is used to lock the adjusting mechanism 20 and the flipping mechanism 30 to maintain a clamping effect;

[0046] The addition of the locking mechanism 40 effectively prevents the deviation of the adjustment mechanism 20 and the flipping mechanism 30, thereby improving the safety performance of the device, while reducing the discomfort of the patient during the adjustment process, and ensuring the stability of the device fixation;

[0047] The mounting mechanism 50 is disposed on the upper side of the medical bed 10 and is used to complete the installation and removal of the adjustment mechanism 20, so as to facilitate the removal of the device for maintenance or replacement, and to enable the device to be quickly installed on different medical beds 10 for use;

[0048] The design of the mounting mechanism 50 not only simplifies the assembly and disassembly process of the device, but also enables the device to adapt to medical beds 10 of different specifications, thereby enhancing the compatibility and practicality of the product.

[0049] Please see attached Figure 1 -Attached Figure 5In a preferred embodiment of the present invention, the adjustment mechanism 20 includes a headrest 209, which is installed on the upper side of the medical bed 10. The headrest 209 is composed of two pads to provide a head placement area. The middle part of the headrest 209 is rotatably connected to a worm 201, and the middle part of the headrest 209 is rotatably connected to a worm wheel 202. The worm 201 and the worm wheel 202 are meshingly connected. The middle part of the worm wheel 202 is fixedly connected to a bidirectional screw rod 203, and the outer peripheries of both ends of the bidirectional screw rod 203 are respectively threadedly connected to nut seats 204. The upper side of the nut seat 204 is fixedly connected to a connecting plate 205, and the middle part of the connecting plate 205 is slidably connected to a support rod 206, and the outer periphery of the support rod 206 is fixedly connected to a splint 207. The worm wheel 202 is rotated with the bidirectional screw rod 203 by rotating the worm 201, and when the bidirectional screw rod 203 rotates, the nut seat 204 can be connected with the connecting plate 205. The support rod 206 moves, and the position between the two splints 207 can be adjusted at this time, so that the device is suitable for patients with different head sizes. The two splints 207 are fixedly connected to a rubber pad 208 on one side thereof. The rubber pad 208 is used to provide a buffer zone, so that the splints 207 maintain a certain softness after contacting the patient, thereby avoiding hard contact and causing physical discomfort to the patient and reducing the tension when fixed. The outer periphery of the support rod 206 is rotatably connected to a slider 211, and the slider 211 is slidably connected to the upper side of the headrest 209. The slider 211 is used to provide a limit for the support rod 206, so that when the support rod 206 moves, the splints 207 can move at the same time and maintain parallelism during movement. The top of the headrest 209 is fixedly connected to a gasket 210, which further provides a comfortable area for the patient, thereby greatly reducing the tension of the patient.

[0050] Please see attached Figure 1 -Attached Figure 6In a preferred embodiment of the present invention, the flip mechanism 30 includes a connecting sleeve 301, the connecting sleeve 301 is fixedly connected to one end of the worm 201, the connecting sleeve 301 is slidably connected to a driving rod 302, the driving rod 302 is slidably connected to the middle of the worm 201, the outer periphery of the driving rod 302 is fixedly connected to a connecting block 303, the connecting block 303 and the connecting sleeve 301 are plug-fitted, the connecting block 303 is fixedly connected to a protrusion 304 on one side away from the connecting sleeve 301, and the other side of the protrusion 304 is fixed The headrest 209 is connected with a baffle 305, and the inside of the headrest 209 is rotatably connected to two pay-off wheels 306. The driving rod 302 and the protrusion 304 are slidably connected to the middle of the pay-off wheels 306. The outer sides of the two pay-off wheels 306 are fixedly connected with elastic pull ropes 307. The other ends of the elastic pull ropes 307 are fixedly connected with connecting rods 308. The two connecting rods 308 are rotatably connected to the middle of the two sliders 211 respectively. When the connecting block 303 and the connecting sleeve 301 are plugged in, the driving rod 302 can be rotated to make the driving rod 302 bring The dynamic adjustment mechanism 20 works, and at the same time, the pay-off wheel 306 can rotate and complete the retracting and releasing work. The end of the support rod 206 close to the connecting plate 205 is fixedly connected to the half gear 310, and the interior of the connecting plate 205 is fixedly connected to the rack plate 311. The half gear 310 and the rack plate 311 are meshed and connected. When the connecting block 303 and the driving rod 302 are separated, the driving rod 302 rotates with the pay-off wheel 306, and at the same time, the elastic pull rope 307 is rolled up and the connecting rod 308 moves. When the connecting plate 205 moves, the connecting plate 205 The connecting sleeve 301 and the connecting block 303 are connected to each other, and the connecting plate 205 and the unwinding wheel 306 are wound at the same time, so that the position of the splint 207 can be adjusted and the loose elastic pull rope 307 can be wound up to prepare for the subsequent fixing operation.

[0051] Please see attached Figure 1 and attached Figure 7In a preferred embodiment of the present invention, the locking mechanism 40 includes a rotating cylinder 401, which is fixedly connected to the end of the worm 201 away from the connecting sleeve 301, a fixing block 402 is fixedly connected to the outside of the headrest 209, a return spring 403 is fixedly connected to the inside of the fixing block 402, a disc 404 is fixedly connected to the other end of the return spring 403, a pull rod 405 is fixedly connected to the middle of the disc 404, and the pull rod 405 and the rotating cylinder 401 are plugged together, and the elastic force of the return spring 403 can maintain the headrest 209. Continue to squeeze the disc 404 and maintain the connection between the pull rod 405 and the rotating drum 401. At this time, the worm 201 can be limited. At the same time, when the connecting block 303 and the connecting sleeve 301 are connected, the driving rod 302 can also be limited to prevent the rotation of the worm 201 and the driving rod 302, thereby ensuring the current fixed position. Before use, the pull rod 405 can be pulled to make the disc 404 compress the reset spring 403 and separate it from the rotating drum 401, so that the driving rod 302 can be rotated for adjustment and flipping operations.

[0052] Please see attached Figure 1 and attached Figure 8 In a preferred embodiment of the present invention, the mounting mechanism 50 includes two positioning blocks 501, which are fixedly connected to the outer sides of the headrest 209, respectively. A plurality of positioning grooves 502 are provided on the upper side of the positioning blocks 501. Two mounting plates 503 are fixedly installed on the upper side of the medical bed 10. The positioning blocks 501 are slidably connected to the middle of the mounting plates 503. The positioning blocks 501 are limited by the mounting plates 503, so that the device is aligned and connected with the mounting mechanism 50, so as to facilitate the installation of the device. Two supporting seats 504 are fixedly connected to the upper side of the mounting plate 503. A pressing plate 506 is rotatably connected between the two supporting seats 504. A spring 505 is fixedly connected to the inside of the supporting seat 504. The other end of the spring 505 is fixedly connected to the pressing plate 506. The outer side of the pressure plate 506 is slidably connected to the middle part of the pressure plate 506 with a rotating rod 507, and the outer periphery of the rotating rod 507 is rotatably connected to a clamping block 508, and the clamping block 508 is slidably connected to the middle part of the mounting plate 503, and the clamping block 508 is plugged into and matched with one of the positioning grooves 502. Under the action of the clockwork spring 505, the pressure plate 506 can be kept tilted, thereby maintaining the installation position of the clamping block 508. By pressing the pressure plate 506, the clockwork spring 505 can be twisted and deformed. At the same time, when the pressure plate 506 is tilted, the rotating rod 507 can be limited in the pressure plate 506 to slide. At the same time, the clamping block 508 is limited to rotate on the outer periphery of the rotating rod 507 and remain perpendicular to the mounting plate 503. At this time, the clamping block 508 and the positioning groove 502 can be separated to facilitate the installation and removal of the device.

[0053] Please see attached Figure 6In a preferred embodiment of the present invention, a plurality of grooves are provided on the outer circumference of the rotating drum 401, and the pull rod 405 is plugged into one of the grooves. By setting the plurality of grooves, it is possible to ensure that the pull rod 405 of the locking mechanism 40 can be plugged into one of the grooves after the rotating drum 401 rotates following the driving rod 302, thereby completing the locking operation.

[0054] Please see attached Figure 6 In a preferred embodiment of the present invention, a locking groove is provided on one side of the connecting sleeve 301 close to the connecting block 303, and the connecting block 303 is slidably connected to the middle of the locking groove. The locking groove can provide a movable space for the connecting block 303, and at the same time, multiple connection angles can be provided between the connecting block 303 and the connecting sleeve 301, so as to complete the connection operation of the adjustment mechanism 20 and the flip mechanism 30.

[0055] Please see attached Figure 6 In a preferred embodiment of the present invention, a handle is fixedly connected to one end of the driving rod 302 away from the connecting block 303, and an anti-slip groove is provided on the outer side of the handle. The handle and the anti-slip groove enable the operator to rotate the driving rod 302 more conveniently and effectively.

[0056] Please see attached Figure 4 In a preferred embodiment of the present invention, the headrest 209 is internally rotatably connected with a roller, and the elastic pull cord 307 and the roller are in rolling contact with each other. The roller is arranged to reduce the friction between the elastic pull cord 307 and the headrest 209 when the elastic pull cord 307 is released or retracted, while increasing the speed at which the elastic pull cord 307 is retracted and released.

[0057] Please see attached Figure 1 -Attached Figure 8 The present invention also provides a method for using a head retaining device for medical ophthalmological examination, comprising the following steps:

[0058] Step 1: Pull the pull rod 405 to move the disc 404 upward, thereby compressing the reset spring 403 and releasing the lock on the rotating drum 401. At this time, the pay-off wheel 306 is rotated by rotating the driving rod 302, and the connecting block 303 drives the worm 201 to rotate. When the worm 201 rotates, the worm wheel 202 can drive the two-way screw rod 203 to rotate, so that the nut seat 204 with the connecting plate 205 and the support rod 206 and the splint 207 move, so that the two splints 207 are close to each other and moved to the vicinity of the affected head. When the pay-off wheel 306 rotates, the elastic pull rope 307 is reeled in. At this time, the loose elastic pull rope 307 can be tightened to prevent the elastic pull rope 307 from being entangled. Finally, the pull rod 405 is released to reset the reset spring 403 and squeeze the disk 404, so that the pull rod 405 is ejected into the rotating drum 401, completing the restriction of the worm 201.

[0059] Step 2: When the position adjustment of the splint 207 is completed, the driving rod 302 is pressed to separate the connecting block 303 and the connecting sleeve 301, and the driving rod 302 is rotated after separation, so that the pay-off wheel 306 rotates alone, and at this time, the elastic pull rope 307 is continuously rolled up to move with the connecting rod 308, so that the splint 207 is again close to the patient's head. At this time, since the connecting plate 205 cannot move, the support rod 206 can be moved when the splint 207 moves, and the support rod 206 can drive the splint 207 to turn over through the cooperation of the half gear 310 and the rack plate 311, thereby completing the fixing operation, and finally the driving rod 302 is pulled to connect the connecting block 303 and the connecting sleeve 301, so that the clamping position of the device can be fixed;

[0060] When the device needs to be removed for maintenance or replaced and installed on a different medical bed 10, the pressing plate 506 is first pressed and the clockwork spring 505 is twisted and compressed when it rotates. At the same time, since the block 508 only moves vertically, the rotating rod 507 is pulled in the pressing plate 506 during the tilting process of the pressing plate 506, thereby separating the block 508 and the positioning groove 502. At the same time, when one side of the pressing plate 506 is pressed to contact with the mounting plate 503, the block 508 is in the middle of the mounting plate 503 and has not detached. At this time, the sliding headrest 209 is about to remove or install the device.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A head retaining device for medical ophthalmic examination, characterized in that: include: A medical bed (10) is used to provide a space for the patient to lie flat for subsequent fixation operations; An adjustment mechanism (20), which is arranged on the upper side of the medical bed (10), is used to support the patient's head and can be adjusted according to the size of the patient's head; a turning mechanism (30), which is arranged on the upper side of the medical bed (10), is connected to the adjusting mechanism (20), and can be driven simultaneously with the adjusting mechanism (20) or driven alone; the turning mechanism (30) can turn over when driven alone, thereby completing the fixation of the patient's head; A locking mechanism (40) is arranged outside the adjusting mechanism (20) and is used to lock the adjusting mechanism (20) and the flipping mechanism (30) to maintain a clamping effect; The mounting mechanism (50) is arranged on the upper side of the medical bed (10) and is used to complete the installation and disassembly of the adjustment mechanism (20), so as to facilitate the removal of the device for maintenance or replacement, and can also quickly install the device on different medical beds (10) for use.

2. A head retaining device for medical ophthalmic examination according to claim 1, characterized in that: The adjustment mechanism (20) comprises a headrest (209), the headrest (209) being mounted on the upper side of the medical bed (10), the headrest (209) being composed of two cushion blocks, providing a head placement area, the middle part of the headrest (209) being rotatably connected to a worm (201), the middle part of the headrest (209) being rotatably connected to a worm wheel (202), the worm (201) and the worm wheel (202) being meshingly connected, the middle part of the worm wheel (202) being fixedly connected to a bidirectional lead screw (203), the outer circumferences of both ends of the bidirectional lead screw (203) being respectively threadedly connected to screws. The female seat (204) is fixedly connected to a connecting plate (205) on the upper side of the nut seat (204), the middle part of the connecting plate (205) is slidably connected to a support rod (206), the outer periphery of the support rod (206) is fixedly connected to a clamping plate (207), the adjacent sides of the two clamping plates (207) are fixedly connected to a rubber pad (208), the outer periphery of the support rod (206) is rotatably connected to a slider (211), the slider (211) is slidably connected to the upper side of the headrest (209), and the top of the headrest (209) is fixedly connected to a gasket (210).

3. A head retaining device for medical ophthalmic examination according to claim 1, characterized in that: The flip mechanism (30) comprises a connecting sleeve (301), wherein the connecting sleeve (301) is fixedly connected to one end of the worm (201), the connecting sleeve (301) is slidably connected to a driving rod (302), the driving rod (302) is slidably connected to the middle part of the worm (201), the outer periphery of the driving rod (302) is fixedly connected to a connecting block (303), the connecting block (303) and the connecting sleeve (301) are plug-fitted, the side of the connecting block (303) away from the connecting sleeve (301) is fixedly connected to a protrusion (304), the other side of the protrusion (304) is fixedly connected to a baffle (305), and the headrest (209) is rotatably connected to the inner side of the headrest (209). Two pay-off wheels (306), the driving rod (302) and the protrusion (304) are both slidably connected to the middle part of the pay-off wheels (306), the outer sides of the two pay-off wheels (306) are fixedly connected with elastic pull ropes (307), the other ends of the elastic pull ropes (307) are fixedly connected with connecting rods (308), the two connecting rods (308) are rotatably connected to the middle parts of the two sliding blocks (211), one end of the support rod (206) close to the connecting plate (205) is fixedly connected with a half gear (310), the interior of the connecting plate (205) is fixedly connected with a rack plate (311), and the half gear (310) and the rack plate (311) are meshingly connected.

4. A head retaining device for medical ophthalmic examination according to claim 1, characterized in that: The locking mechanism (40) includes a rotating cylinder (401), wherein the rotating cylinder (401) is fixedly connected to one end of the worm (201) away from the connecting sleeve (301), a fixing block (402) is fixedly connected to the outer side of the headrest (209), a return spring (403) is fixedly connected to the inside of the fixing block (402), the other end of the return spring (403) is fixedly connected to a disk (404), the middle part of the disk (404) is fixedly connected to a pull rod (405), and the pull rod (405) and the rotating cylinder (401) are plug-fitted.

5. A head retaining device for medical ophthalmic examination according to claim 1, characterized in that: The mounting mechanism (50) comprises two positioning blocks (501), the two positioning blocks (501) are respectively fixedly connected to the two sides of the outside of the headrest (209), a plurality of positioning grooves (502) are provided on the upper side of the positioning blocks (501), two mounting plates (503) are fixedly installed on the upper side of the medical bed (10), the positioning blocks (501) are slidably connected to the middle part of the mounting plates (503), two support seats (504) are fixedly connected to the upper side of the mounting plates (503), and the two support seats (504) are fixedly connected to each other. A pressing plate (506) is rotatably connected therebetween, a clockwork spring (505) is fixedly connected inside the supporting seat (504), the other end of the clockwork spring (505) is fixedly connected to the outside of the pressing plate (506), a rotating rod (507) is slidably connected to the middle of the pressing plate (506), a clamping block (508) is rotatably connected to the outer periphery of the rotating rod (507), the clamping block (508) is slidably connected to the middle of the mounting plate (503), and the clamping block (508) is plugged into and matched with one of the positioning grooves (502).

6. A head retaining device for medical ophthalmic examination according to claim 1, characterized in that: The outer circumference of the rotating drum (401) is provided with a plurality of grooves, and the pull rod (405) is plug-fitted into one of the grooves.

7. A head retaining device for medical ophthalmic examination according to claim 1, characterized in that: A locking groove is provided on one side of the connecting sleeve (301) close to the connecting block (303), and the connecting block (303) is slidably connected to the middle part of the locking groove.

8. The head retaining device for medical ophthalmic examination according to claim 1, characterized in that: One end of the driving rod (302) away from the connecting block (303) is fixedly connected to a handle, and an anti-slip groove is provided on the outer side of the handle.

9. A head retaining device for medical ophthalmic examination according to claim 1, characterized in that: The headrest (209) is rotatably connected to a roller inside, and the elastic pull rope (307) rolls against the roller.

10. A method for using a head retaining device for medical ophthalmic examination, characterized in that: Using the head retaining device for medical ophthalmic examination according to any one of claims 1 to 9 comprises the following steps: Step 1: Pull the pull rod (405) to move the disc (404) upwards, thereby compressing the return spring (403) and releasing the lock on the rotating drum (401). At this time, the pay-off wheel (306) is rotated by rotating the driving rod (302), and the connecting block (303) drives the worm (201) to rotate. When the worm (201) rotates, the worm wheel (202) can drive the bidirectional screw (203) to rotate, so that the nut seat (204) with the connecting plate (205) and the support rod (206) and the splints (207) are moved so that the two splints (207) are moved close to each other and near the affected head. When the pay-off wheel (306) rotates, the elastic pull rope (307) is rolled up, and the loose elastic pull rope (307) can be tightened at this time, thereby preventing the elastic pull rope (307) from being entangled. Finally, the pull rod (405) is loosened to reset the reset spring (403) and squeeze the disc (404), so that the pull rod (405) is ejected into the rotating drum (401), thereby completing the restriction of the worm (201); Step 2: When the position adjustment of the splint (207) is completed, the driving rod (302) is pressed to separate the connecting block (303) and the connecting sleeve (301), and the driving rod (302) is rotated after separation, so that the pay-off wheel (306) rotates alone, and at this time, the elastic pull rope (307) is continuously wound up to move with the connecting rod (308), so that the splint (207) is again close to the patient's head. At this time, since the connecting plate (205) cannot move, the support rod (206) can be moved when the splint (207) moves, and the support rod (206) can drive the splint (207) to flip through the cooperation of the half gear (310) and the rack plate (311), thereby completing the fixing operation, and finally pulling the driving rod (302) to connect the connecting block (303) and the connecting sleeve (301), so that the clamping position of the device can be fixed; When the device needs to be removed for maintenance or replaced and installed on a different medical bed (10), the pressing plate (506) is first pressed and the clockwork spring (505) is twisted and compressed when it rotates. At the same time, since the block (508) only moves vertically, the rotating rod (507) slides in the pressing plate (506) through pulling force during the tilting of the pressing plate (506), thereby separating the block (508) and the positioning groove (502). At the same time, when one side of the pressing plate (506) is pressed to contact with the mounting plate (503), the block (508) is in the middle of the mounting plate (503) and does not detach. At this time, the sliding headrest (209) is about to remove or install the device.

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