Electric retracting and extending mechanism and electric adjusting mechanism of dry eye examination device

Abstract

An electric retractable mechanism and an electric adjustment mechanism for a dry eye examination device, comprising a slit lamp optical body and a slit lamp curved arm, and also comprising an electric retractable mechanism, an electric adjustment mechanism and a dry eye examination device; the fixed portion of the electric retractable mechanism is mounted on the slit lamp body; the output portion of a first drive device drives the rotating portion of the electric retractable mechanism to rotate; the fixed portion of the electric adjustment mechanism is mounted on the rotating portion of the electric retractable mechanism, and the dry eye examination device is connected to the sliding portion of the electric adjustment mechanism; the output portion of a second drive device drives the sliding portion of the electric adjustment mechanism to move along the axial direction. The second drive device and the adjustment mechanism are provided, and under computer control, according to different dry eye examination items (tear film rupture examination, meibomian gland examination, lipid layer examination, tear meniscus height examination, etc.), the dry eye examination device automatically moves to respective working positions to ensure the accuracy of the examination results.

Description

Technical Field

[0001] The present invention relates to the field of medical equipment, and in particular to an electric retractable mechanism and an electric regulating mechanism of a dry eye examination device. Background Art

[0002] Eyes are the most important organ of human senses. About 80% of the knowledge in the brain is acquired through the eyes. Reading, reading, looking at pictures, looking at people, appreciating beautiful scenery, etc. all require the use of eyes.

[0003] Dry eye is the most common ocular surface disease with a high incidence rate. Its incidence rate in China is 20-36%. In recent years, its development trend has shown a significant growth trend due to the increase in the frequency and time of eye use. Studying this disease has practical significance for human health.

[0004] Various examinations for dry eyes, including: tear meniscus height measurement, tear film breakup time measurement, meibomian gland analysis, lipid layer assessment, eye rim analysis, eye redness analysis, etc.

[0005] There are three types of instruments that can complete the above dry eye examination items: the first type is the instrument developed based on the original corneal topographer; the second type is the instrument developed based on the original slit lamp, with an additional corneal projection device for dry eye examination; the third type is a special instrument for dry eye examination, which can only perform dry eye examination items and has no other functions.

[0006] The following is a description of the second category, instruments developed based on the slit lamp.

[0007] The slit lamp microscope (slit lamp for short) is an important instrument indispensable for ophthalmic examinations and the most widely used basic instrument for routine ophthalmic examinations. The state requires the mandatory use of slit lamps in ophthalmic diagnosis and treatment, ophthalmic health care, optometry and glasses fitting industries.

[0008] The corneal projection device for dry eye examination (hereinafter referred to as the dry eye device) is attached to the slit lamp and is placed between the eye and the slit lamp optical body when working. The optical axis of the dry eye device coincides with the imaging optical axis of the slit lamp. The operator uses the device to illuminate the ocular surface (visible light and infrared light illumination) or project illumination patterns (Placido ring, etc.) onto the ocular surface.

[0009] In order to meet the basic examination conditions and achieve better results when conducting various items of dry eye examination, the existing dry eye device has different distances from the human eye surface. There is position A close to the human eye surface; position C far from the human eye surface; and position B between A and C. Positions A, B, and C are all "working positions" of the dry eye device. In addition, there is a "non-working position" position D: the position where the dry eye device is placed when not conducting dry eye examination. At this position, the dry eye device does not affect the normal use of other functions of the slit lamp.

[0010] During specific use, the adjustment, movement, retraction and rotation of the dry eye device are as follows:

[0011] 1. Use the device to check various items of dry eye. For example, the distance between the aforementioned device and the human eye surface is different, and the device needs to be moved to the corresponding position. For example, the tear film breakup test needs to be moved to position A, the lipid layer test and tear meniscus height test need to be moved to position B, and the meibomian gland test needs to be moved to position C. Each dry eye test requires frequent movement between positions A, B, and C.

[0012] 2. When using the slit lamp's own function, the device needs to be rotated from the working position A (or B, C) to the non-working position D; when using the dry eye device for examination, the device needs to be rotated from the non-working position D to the working position A (or B, C).

[0013] The above dry eye devices are manually adjusted, moved, retracted and rotated, which has the following disadvantages:

[0014] a. Directly rotating from working position B or C to non-working position D, the dry eye device collides with the slit lamp, causing damage to the equipment;

[0015] b. Direct rotation from the non-working position D to the working position A may easily cause the device to collide with the patient's face, causing injury;

[0016] c. Position errors caused by incorrect operation affect the accuracy of the inspection results;

[0017] d. To ensure that the above problems do not occur, doctors need to operate professionally, the process is more complicated, and the work intensity and difficulty are increased;

[0018] e. The device must be touched by hand each time it is used, which can easily cause secondary infection between different operators and is not easy to protect the operators. Summary of the invention

[0019] In view of the shortcomings of the prior art, the present invention proposes an electric retractable mechanism and an electric adjustment mechanism for a dry eye examination device. The specific technical solution is as follows:

[0020] An electric retractable and adjustable mechanism of a dry eye examination device comprises a slit lamp optical body and a slit lamp curved arm, wherein the slit lamp optical body is connected to the top of the slit lamp curved arm, and is characterized in that:

[0021] It includes an electric retracting and extending mechanism, an electric adjusting mechanism and a dry eye inspection device;

[0022] The electric retractable mechanism comprises a retractable fixed portion and a rotating portion, and the rotating portion rotates relative to the retractable fixed portion;

[0023] The first driving device drives the rotating part of the electric retractable mechanism to rotate;

[0024] The electric adjustment mechanism comprises an adjustment fixing portion and a sliding portion, wherein the sliding portion slides axially relative to the adjustment fixing portion;

[0025] The fixed part of the electric adjustment mechanism is installed on the rotating part of the electric retractable mechanism, and the dry eye inspection device is connected to the sliding part of the electric adjustment mechanism;

[0026] The second driving device drives the dry eye testing device to move via the sliding part.

[0027] Further: the electric retractable mechanism fixing part is installed in the middle of the lower part of the slit lamp optical body, and moves with the slit lamp optical body;

[0028] The first driving device is fixed through the slit lamp bending arm, and the first driving device drives the rotating part of the electric retracting and extending mechanism to rotate.

[0029] Furthermore, the fixed part of the electric retractable mechanism may be located on the upper part of the slit lamp optical body and move along with the slit lamp optical body.

[0030] Further:

[0031] The position of the fixed part of the electric retractable mechanism can also be on the left side of the lower part of the slit lamp optical body, that is, on the left side of the slit lamp curved arm, and move with the slit lamp optical body.

[0032] Further:

[0033] The position of the fixed part of the electric retractable mechanism can also be located to the right of the lower part of the slit lamp optical body, that is, the right side of the slit lamp curved arm, and move together with the slit lamp optical body.

[0034] Furthermore: the second driving device is installed on the fixing part of the electric adjustment mechanism.

[0035] Furthermore: the cables of the dry eye inspection device, the first driving device and the second driving device are hidden inside the instrument.

[0036] The beneficial effects of the present invention are:

[0037] First, when rotating from working position B or C to non-working position D, the device must first be moved directly to working position A before being rotated to non-working position D. This will prevent the device from colliding with the slit lamp, thus protecting the safety of the equipment.

[0038] Second, when the device moves from position B, C, or D to position A, the computer system will use sound and light to remind people to pay attention to safety when adjusting the position of the dry eye device, so as to avoid collision and contact between the device and the patient's face or eyes, which may cause injury.

[0039] Third, under computer control, the device automatically moves to its respective working position according to different dry eye examination items (tear film breakup examination, meibomian gland examination, lipid layer examination, tear meniscus height examination, etc.) to ensure the accuracy of the examination results;

[0040] Fourth, it reduces the workload and difficulty of doctors and reduces the complexity of their operations;

[0041] Fifth, the operator does not touch the instrument during the switching process, which can prevent secondary infection between operators and protect doctors.

[0042] Sixth, it creates conditions for the automation of dry eye examination. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of the dry eye examination device (Example 1);

[0044] Figure 2 Schematic diagram of the position of the dry eye examination device on the slit lamp optical body (Example 1);

[0045] Figure 3 is a cross-sectional schematic diagram of a dry eye examination device (Example 1);

[0046] Figure 4 It is an exploded schematic diagram of a dry eye inspection device (Example 1);

[0047] Figure 5 A schematic diagram of the dry eye examination device (Example 2);

[0048] Figure 6 Schematic diagram of the position of the dry eye examination device on the slit lamp optical body (Example 2);

[0049] Figure 7 It is a cross-sectional schematic diagram of a dry eye examination device (Example 2);

[0050] Figure 8 The figure is an exploded schematic diagram of a dry eye inspection device (Example 2);

[0051] Fig. 9 Schematic diagram of the position of the dry eye examination device on the slit lamp optical body (Example 3);

[0052] Fig.10 Schematic diagram of the position of the dry eye examination device on the slit lamp optical body (Example 4);

[0053] Fig.11 This is the workflow diagram of this patent;

[0054] The reference numerals in the figure are as follows: dry eye examination device 1, working position A, working position B, working position C, non-working position D on the right, non-working position E on the left, slit lamp optical body 2, slit lamp curved arm 3, first driving device 4, driving gear 5, retractable fixing part 6, driven gear 7, rotating part 8, electric retractable mechanism 9, screw rod 10, sliding part 11, slider seat 12, electric adjustment mechanism 13, device fixed end 14, device free end 15, second driving device 16, guide shaft 17, adjustment fixing part 18, connecting seat 19. DETAILED DESCRIPTION

[0055] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0056] Embodiment 1, as Figures 1 to 4 As shown: a slit lamp with an electric retractable mechanism and an electric adjustment mechanism 13 for dry eye examination, wherein the electric retractable mechanism fixing portion is installed in the middle of the lower part of the slit lamp optical body, comprising a dry eye examination device 1, a slit lamp optical body 2, a slit lamp curved arm 3, an electric retractable mechanism 9, and an electric adjustment mechanism 13;

[0057] The slit lamp optical body 2 is installed on the top of the slit lamp curved arm 3. The electric retractable mechanism 9 includes a rotating part 8, a retractable fixed part 6, a driven gear 7 and a driving gear 5. The retractable fixed part 6 is vertically connected to the upper part of the slit lamp curved arm 3. The driven gear 7 is loosely sleeved on the retractable fixed part 6. The rotating part 8 is fixedly sleeved on the driven gear 7. The driven gear 7 can drive the rotating part 8 to rotate relative to the retractable fixed part 6. The first driving device 4 is vertically installed in the slit lamp curved arm 3. The driving gear 5 is sleeved on the output part of the first driving device 4, and the driving gear 5 is meshed with the driven gear 7.

[0058] The first driving device 4 rotates to drive the driving gear 5 to rotate, the driving gear 5 drives the driven gear 7 to rotate, the driven gear 7 drives the rotating part 8 to rotate, and the rotating part 8 drives the electric adjustment mechanism 13 to rotate counterclockwise (or clockwise).

[0059] The electric adjustment mechanism 13 includes an adjustment fixing portion 18, a screw rod 10, a sliding portion 11, a slider seat 12, and a guide shaft 17. The screw rod 10 is connected to the second driving device 16 and rotates with the rotating portion of the second driving device 16.

[0060] The screw rod 10 and the guide shaft 17 are adjacently arranged on the adjustment fixing part 18, and the sliding part 11 is installed on the screw rod 10 and the guide shaft 17. The specific structure is that a nut and a guide shaft hole are arranged inside the sliding part 11, the nut cooperates with the screw rod 10, and the guide shaft hole cooperates with the guide shaft 17;

[0061] The second driving device 16 drives the screw rod 10 to rotate, and the sliding part 11 slides back and forth along the two guide shafts as the screw rod 10 rotates;

[0062] The slider seat 12 is fixed on the sliding portion 11 , and the fixed end 14 of the dry eye testing device 1 is fixed on the slider seat 12 .

[0063] The slider seat 12 is driven by the second driving device 16, and the slider seat 12 drives the dry eye inspection device 1 disposed thereon to move along the axial direction (the moving direction is as shown in FIG. Figure 2 As shown by the middle arrow, forward is position A, backward is position C, and the middle position is position B); the electric retracting mechanism 9 is arranged at the lower part of the slit lamp optical body 2, and moves together with the slit lamp optical body 2;

[0064] like Figure 2 As shown: the electric retractable mechanism 9 drives the electric adjustment mechanism 13, and the dry eye examination device 1 is rotated to the non-working position D when not in use (the projection device is removed from the slit lamp imaging optical path, which does not affect the position of the slit lamp), and all functions of the slit lamp microscope are not affected in this position; when it is needed, it is rotated back to the working position A, or B, or C (the position where the optical axis of the projection device coincides with the optical axis of the slit lamp imaging);

[0065] like Figure 2 As shown: the dry eye examination device 1 stays in the working position (the projection device is removed from the slit lamp imaging optical path, and does not affect the position of the slit lamp), and the axial movement generated by the electric adjustment mechanism 13 changes the distance between the dry eye examination device 1 and the observed person's eyes; the dry eye examination device 1 stays in the non-working position (the position where the optical axis of the projection device coincides with the imaging optical axis of the slit lamp), and the maximum axial displacement generated by the electric adjustment mechanism 13 increases the distance between the dry eye examination device 1 and the slit lamp optical body 2;

[0066] The cables of the dry eye inspection device 1 , the first driving device 4 , and the second driving device 16 are hidden inside the instrument;

[0067] The movement of the electric retractable mechanism 9 and the electric adjustment mechanism 13 is controlled by the system control signal to rotate and move.

[0068] As the instruction manual Fig.11 Position switching rules: 1. From the working position to the non-working position D, you cannot directly move from the C or B position to the D position, and follow the C→B→A→D position movement;

[0069] 2. When all moves are made to position A, i.e. D→A, B→A, and C→A, the computer system will provide synchronous sound and light reminders to personnel safety when adjusting the position of the dry eye device.

[0070] The working principle of the present invention is as follows: the dry eye examination device 1 stays in the non-working position D or the non-working position E. When the dry eye examination device 1 needs to be used, the computer sends a system control signal, and the first driving device 4 drives the active gear 5 connected thereto to drive the driven gear 7 sleeved on the retractable fixing part 6 to rotate, so that the dry eye examination device 1 rotates to the working position A and is aligned with the human eye surface. Before the rotation, the computer system prompts personnel to pay attention to safety through the set sound and light to avoid collision with the protruding parts of the patient's face.

[0071] When the dry eye examination device 1 is not needed, it can automatically return to the non-working position D or the non-working position E without affecting all functions of the slit lamp. Before the rotation, if the device is in position C or D, it must first be moved to position A and then rotated. At the same time, the computer system uses the set sound and light prompts to pay attention to personnel safety and avoid collision with the protruding parts of the patient's face.

[0072] When performing a dry eye examination, according to the different items of the dry eye examination, the computer will send a system control signal based on the dry eye examination item position library information, and the second drive device 16 will also drive the screw rod 10 connected thereto to rotate, pushing the sliding part 11 to move back and forth, and the sliding part 11 drives the slider seat 12 connected thereto and the dry eye examination device 1 to move back and forth, move to the inspection position of the item, and obtain a clear projection image for pathological analysis.

[0073] Embodiment 2, as Figures 5 to 8 As shown: a slit lamp with an electric retractable mechanism and an electric adjustment mechanism for dry eye examination, the fixing part of the electric retractable mechanism is installed on the upper part of the slit lamp optical body, and the other structures and working principles of the electric retractable mechanism and the electric adjustment mechanism are the same as those in Example 1, and the only difference is the installation position and installation method.

[0074] The retractable fixing portion 6 of the electric retractable mechanism 9 is fixedly connected to the connecting seat 19 , and the connecting seat 19 is connected to the upper part of the slit lamp optical body 2 .

[0075] Embodiment three, as Fig. 9As shown: a slit lamp with an electric retractable mechanism and an electric adjustment mechanism for dry eye examination. The fixed part of the electric retractable mechanism is installed on the lower right side of the slit lamp optical body, that is, the right side of the slit lamp curved arm. Other structures such as the electric retractable mechanism and the electric adjustment mechanism and the working principle are the same as those in the first embodiment, and the only difference is the installation position and the rotation direction.

[0076] The retractable fixing part 6 of the electric retractable mechanism 9 is fixedly connected to the right side surface of the slit lamp curved arm 3. When the dry eye examination device 1 is not in use, it can automatically return to the non-working position E without affecting all functions of the slit lamp.

[0077] Embodiment 4, as Fig.10 As shown: a slit lamp with an electric retractable mechanism and an electric adjustment mechanism for dry eye examination. The fixed part of the electric retractable mechanism is installed on the lower left side of the slit lamp optical body, that is, the left side of the slit lamp curved arm. Other structures and working principles such as the electric retractable mechanism and the electric adjustment mechanism are the same as those in Example 1, and the only difference is the installation position and rotation direction.

[0078] The retractable fixing part 6 of the electric retractable mechanism 9 is fixedly connected to the left side of the slit lamp curved arm 3. When the dry eye examination device 1 is not in use, it can automatically return to the non-working position D without affecting all functions of the slit lamp.

[0079] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments (for example, the electric retractable mechanism is not limited to the use of gear transmission, but other transmissions; the adjustment mechanism is not limited to the use of screw nut transmission, but other transmissions), and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0080] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A slit lamp attached dry eye examination device, comprising a slit lamp optical body and a slit lamp curved arm, wherein the slit lamp optical body is connected to the top of the slit lamp curved arm, characterized in that: It includes an electric retracting and extending mechanism, an electric adjusting mechanism and a dry eye inspection device; The electric retractable mechanism comprises a retractable fixed portion and a rotating portion, and the rotating portion rotates relative to the retractable fixed portion; The first driving device drives the rotating part of the electric retractable mechanism to rotate; The electric adjustment mechanism comprises an adjustment fixing portion and a sliding portion, wherein the sliding portion slides axially relative to the adjustment fixing portion; The adjusting and fixing part of the electric adjusting mechanism is installed on the rotating part of the electric retracting and releasing mechanism, and the dry eye testing device is connected to the sliding part of the electric adjusting mechanism; The second driving device drives the dry eye inspection device to move via the sliding part; The motor retractable mechanism also includes a driven gear and a driving gear, and the driven gear is loosely sleeved in the retractable fixed part. The rotating part is fixedly sleeved on the driven gear, and the driven gear can drive the rotating part to rotate relative to the retractable fixed part. The first driving device is vertically installed in the slit lamp arm, and the driving gear is sleeved on the output part of the first driving device, and the driving gear is meshed with the driven gear. The first driving device rotates to drive the driving gear to rotate, the driving gear drives the driven gear to rotate, the driven gear drives the rotating part to rotate, and the rotating part drives the electric adjustment mechanism to rotate counterclockwise or clockwise; The electric adjustment mechanism also includes a screw rod, a slider seat, and a guide shaft. The screw rod is connected to the second driving device and rotates with the rotating part of the second driving device. The screw rod and the guide shaft are adjacently arranged on the adjustment fixing part, the sliding part is installed on the screw rod and the guide shaft, a nut and a guide shaft hole are arranged inside the sliding part, the nut cooperates with the screw rod, and the guide shaft hole cooperates with the guide shaft; the second driving device drives the screw rod to rotate, and the sliding part slides back and forth along the two guide shafts as the screw rod rotates; The slider seat is fixed on the sliding part; the slider seat is driven by the second driving device, and the slider seat drives the dry eye inspection device arranged on it to move along the axial direction; the electric retracting and releasing mechanism is arranged at the lower part of the slit lamp optical body and moves with the slit lamp optical body.

2. A slit lamp attached dry eye examination device according to claim 1, characterized in that: The retractable fixing part of the electric retractable mechanism is installed in the middle of the lower part of the slit lamp optical body and moves together with the slit lamp optical body; The first driving device is fixed through the slit lamp bending arm, and the first driving device drives the rotating part of the electric retracting and extending mechanism to rotate.

3. A slit lamp attached dry eye examination device according to claim 1, characterized in that: The retractable fixing part of the electric retractable mechanism is located on the upper part of the slit lamp optical body and moves together with the slit lamp optical body.

4. A slit lamp attached dry eye examination device according to claim 1, characterized in that: The retractable and retractable fixing part of the electric retractable and retractable mechanism is located to the left of the lower part of the slit lamp optical body, that is, on the left side of the slit lamp curved arm, and moves together with the slit lamp optical body.

5. The slit lamp-attached dry eye examination device according to claim 1, characterized in that: The retractable and retractable fixing part of the electric retractable and retractable mechanism is located to the right of the lower part of the slit lamp optical body, that is, on the right side of the slit lamp curved arm, and moves together with the slit lamp optical body.

6. A slit lamp attached dry eye examination device according to claim 2, characterized in that: The second driving device is mounted on the adjustment fixing portion of the electric adjustment mechanism.

7. A slit lamp attached dry eye examination device according to claim 3, characterized in that: The cables of the dry eye inspection device, the first driving device and the second driving device are hidden inside the instrument.

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