WO2021047170A1

WO2021047170A1 - Auxiliary apparatus which can be used in examination of fundus by slit lamp microscope in combination with front-mounted lens

Info

Publication number: WO2021047170A1
Application number: PCT/CN2020/083616
Authority: WO
Inventors: 邱奥望; 刘庆淮; 谢平; 张薇玮
Original assignee: 江苏省人民医院（南京医科大学第一附属医院）
Priority date: 2020-04-03
Filing date: 2020-04-08
Publication date: 2021-03-18
Also published as: WO2021047168A1; CN111387934A; ZA202102919B; LU102792B1

Abstract

An auxiliary apparatus which can be used in the examination of a fundus by a slit lamp microscope in combination with a front-mounted lens, wherein an internal right angle fixing clip is provided with two left and right internal right angle fixing clip bodies (12), one of the two left and right internal right angle fixing clip bodies (12) is provided with an internally threaded hole (17) matched with a connecting piece threaded connector (11), a front-mounted lens holder comprises two left and right gripping half rings (2), the two left and right gripping half rings (2) are connected by a connecting hinge (1), the insides of the two left and right gripping half rings (2) are lined with silicone pads (16) which increase static friction between the gripping half rings (2) and the front-mounted lens so that the gripping is more stable, the two left and right gripping half rings (2) are provided with gripping half ring fastening bolt fastening holes (6), the centres of the fastening holes (6) are provided with internal threads matching a fastening bolt (5), and gripping of the front-mounted lens by the two gripping half rings (2) is achieved by turning the fastening bolt (5) in the fastening holes (6). The auxiliary apparatus has a reasonable structure, is easy to use, and achieves a good effect.

Description

Auxiliary device that can be used in the examination of fundus with slit lamp microscopy combined with pre-scopy

[0001] The present invention relates to an auxiliary device for examination of fundus with a slit lamp microscope combined with a slit lamp front mirror. Background technique

[0002] The fundus is a general term that is located at the back of the eyeball, and the lesions in this part are called fundus diseases, and there are few symptoms in the early stage of fundus diseases. Once the problem is discovered, the disease has reached the middle and late stages. At this time, even after receiving treatment, there is still a higher probability of blindness. Therefore, early screening, early prevention and early treatment of ocular fundus diseases. In addition, the fundus of the eye is also a part of the whole body where blood vessels and nerves can be observed. Many systemic diseases such as hypertension, nephropathy, diabetes, gestational toxemia, sarcoidosis, certain blood diseases, and central nervous system diseases will all have changes in the fundus. . It can be seen that fundus examination is of great significance in the diagnosis and treatment of fundus diseases and many systemic diseases.

[0003] When examining the fundus with a slit lamp microscope combined with a slit lamp front mirror, the examiner holds the slit lamp front lens, and adjusts the three-dimensional space of the slit lamp front lens appropriately in front of the examinee’s eyes. The fundus image intersects between the lens and the microscope. Use the magnification function of the slit lamp microscope to magnify the image. In addition, the inspection method of the slit lamp microscope combined with the slit lamp front lens has the following advantages: ① The examiner avoids close contact with the patient’s face to face, reducing the risk of occupational exposure at work; ② During the inspection, the slit lamp front lens No contact with the cornea, will not cause corneal abrasion; ③Skilled doctors can easily complete the posterior pole examination of the fundus under the condition of small pupils in the bright room, and obtain a good three-dimensional fundus image; ④ The slit lamp microscope is an ophthalmology department An essential inspection tool, you can see it everywhere in the ophthalmology ward, and the front mirror is small and light and can be carried with you. The combination of the two makes it easier to observe the fundus. Therefore, in the fundus examination, the slit lamp microscope combined with the slit lamp front mirror examination method is more and more adopted, and it shows obvious advantages.

[0004] However, in the process of using a slit lamp microscope in combination with a slit lamp front lens to examine the fundus, the examiner always needs to hold the slit lamp front lens with one hand in the air, so that the slit lamp front lens is in a proper space for examination. Holding the slit lamp front lens with one hand suspended for a long time, the examiner was physically exhausted, and the arm was trembling due to the long-term suspension, which caused the fundus image to be blurred. Moreover, when using a slit lamp When examining the fundus with a microscope combined with a slit lamp front lens, the examiner holds the slit lamp front lens with one hand in the air, and the other hand controls the slit lamp microscope, so he cannot free his hands to complete other operations (such as taking pictures of the fundus image, etc.). Summary of Invention Technical Problem

[0005] The purpose of the present invention is to provide a convenient and effective auxiliary device that can be used in the examination of the fundus by a slit lamp microscope combined with a front lens. Solution to the problem Technical solution

[0006] An auxiliary device that can be used in the examination of the fundus by a slit lamp microscope combined with a front endoscope, which is characterized in that it includes an inner right-angle fixing clip, and the inner right-angle fixing clip has two left and right inner right-angle fixing clips. The right-angle fixing clip is fastened with bolts to complete the fixing of the inner right-angle fixing clip at the chin rest bracket under the chin rest adjustment handwheel of the slit lamp microscope; one of the left and right inner right-angle fixing clips has a connection with One end of the connecting piece is matedly connected with the above-mentioned internal threaded hole through a threaded joint, and the other end is threadedly connected with a slit lamp front lens holder; the slit lamp front lens holder includes a left , The right two encapsulation half rings that hold the front lens of the slit lamp together and fix it, so that the slit lamp front lens is in the circle formed by the two encapsulation half rings on the left and right; the left and right encapsulation half rings are connected by a connecting hinge , So that the left and right two half-rings can be opened and closed as required; the left and right two half-rings are lined with silicone pads that increase the static friction between the half-rings and the front lens of the slit lamp, and make the fit more stable: in The left and right two half-rings are provided with fastening holes for the fastening bolts of the fastening half-rings, and the holes have internal threads matching the fastening bolts. By screwing the fastening bolts into the internal threaded holes, two The engagement of the half-ring to the front lens of the slit lamp;

[0007] The connecting piece includes a metal snake tube, the metal snake tube is sleeved with a silicone rubber tube, and both ends of the metal snake tube are respectively connected with a threaded joint.

[0008] The base of one of the left and right enveloping half-rings has a base, and the bottom surface of the base is provided with an internal threaded hole that matches the threaded joint of the connector.

[0009] The silica gel pad is made of the following parts by weight of raw materials: 54 parts of polycaprolactam, 50 parts of polyethylene, 1 part of triphenyl phosphite, 3 parts of burning kaolin, 3 parts of antimony trioxide, 1 part of nano-active calcium carbonate , 3 parts of triphenyl phosphite, 3 parts of reinforcing fiber, 2 parts of decabromodiphenyl ether. [0010] Working method:

[0011] (1) Auxiliary device for installing the slit lamp front mirror on the slit lamp microscope

[0012] Positioning and fixing of the inner right-angle fixing clip at the chin rest bracket under the chin rest adjustment handwheel of the slit lamp microscope: Take the left and right two inner right-angle fixing clips, one of which has an inner matching with the threaded joint of the connector With the clamp body of the threaded hole facing the examiner, set the clamp body into the chin rest bracket under the chin rest adjustment handwheel of the slit lamp microscope; take the fixing bolts of the inner right-angle fixing clamp and pass them through the inner right-angle fixing clamp body. The fixing clip fastening bolt penetration hole is screwed into the fixing clip fastening bolt fastening hole on the opposite inner right-angle fixing clip body; the two inner right-angle fixing clip fastening bolts are evenly tightened to make the silicone pad and the chin of the slit lamp microscope The chin support bracket under the support adjustment hand wheel is tightly hug to complete the positioning and fixing of the inner right-angle fixing clip at this place;

[0013] Connection of the inner right-angle fixing clip and the slit lamp front lens holder: Take the slit lamp front lens holder and the connecting piece, and screw the threaded joint at one end of the connecting piece into the inner right-angle fixing clip body and the thread of the connecting piece Screw the threaded joint at the other end of the connector into the internal threaded hole of the base of the slit lamp front lens holder and the threaded joint of the connector, and screw it tightly. Complete the connection of the holder and the fixing clip;

[0014] Installation of the slit lamp front mirror on the slit lamp front mirror holder: Adjust the spatial position of the metal coil covered with a silicone rubber tube sleeve to facilitate the slit lamp front mirror in the slit lamp front mirror holder Then, unscrew the fastening bolts of the enclosing half ring, open the enclosing half ring, so that the smaller part of the middle diameter of the slit lamp front mirror is close to the enclosing half ring inner silicone pad (3), slit lamp front mirror The edges of the two sides with larger diameters are located on the two sides outside the silicone pad. Close the half ring and tighten the fastening bolts of the half ring to complete the installation of the slit lamp front lens on the slit lamp front lens holder. ；

[0015] (2) Observation of the fundus of the subject using the slit lamp front lens mounted on the slit lamp front lens holder

[0016] The examinee sits in the examination position of the slit lamp microscope, and tells the examinee to put his chin on the chin rest of the slit lamp microscope, stick the forehead against the head of the slit lamp microscope, adjust the chin rest adjustment hand wheel, Keep the examinee’s eyes in the best position for examination; The examiner uses the thumb and index finger of his left hand to hold the holding ring equipped with the slit lamp front lens, and drive the metal serpentine tube covering the silicone rubber tube to move to make the crack installed in the holding ring The front lens of the lamp is moved to the front of the examinee’s eyes; the space position of the front lens of the slit lamp is fine-tuned to make the fundus image intersect between the lens and the microscope; after a clear fundus image is seen, the slit is used The magnification function of the lamp microscope magnifies the image; loosen the thumb and index finger of the left hand that originally held the slit lamp front lens holding ring, free up the left hand, and keep the slit lamp front lens in the above three-dimensional space; observe the slit lamp microscope lens Bottom fundus images, take pictures and store the images if necessary;

[0017] (3) The auxiliary device for removing the slit lamp front lens from the slit lamp microscope [0018] The auxiliary device for removing the slit lamp front lens from the slit lamp microscope can be regarded as installing the slit lamp front lens on the slit lamp microscope The reverse process of the mirror assist device; that is, in sequence, the examiner holds the holding ring with the slit lamp front mirror and moves it to a place that is convenient for disassembly; loosen the fastening bolts of the holding half ring, open the holding half ring, and take out the slit lamp front mirror , Close the embracing half ring, and tighten the fastening bolts of the embracing half ring. The beneficial effects of the invention

[0019] Fundus examination is of great significance in the diagnosis and treatment of fundus diseases and many systemic diseases. In the fundus examination, the slit lamp microscope combined with the slit lamp front mirror examination method has shown many advantages, and it is more and more clinically adopted. However, in the process of fundus examination with a slit lamp microscope combined with a slit lamp front lens, it is an important link to maintain the proper spatial position of the slit lamp front lens in front of the cornea of the examinee. People often use the following methods to maintain the proper spatial position of the slit lamp front lens in front of the examinee’s cornea, but they all have some shortcomings

[0020] (1) Directly holding the slit lamp front lens: With the method of directly holding the slit lamp front lens, the examiner always needs to hold the slit lamp front lens with one hand in the air so that it is in a suitable examination space. Holding the slit lamp front lens with one hand for a long time, the examiner was physically exhausted, and the arm was trembling due to the long-term suspension, which caused the fundus image to be blurred. Moreover, when using the slit lamp microscope combined with the slit lamp front lens to examine the fundus, the examiner holds the slit lamp front lens with one hand in the air, and the other hand must control the slit lamp microscope, so he can’t free his hands to complete other operations ( Such as taking pictures of fundus images, etc.)

[0021] (2) The idea of using the bracket of the slit lamp microscope front lens proposed by people: The main content of the idea is to use a bracket instead of the examiner’s hand to keep the slit lamp front lens in front of the examinee’s cornea. Appropriate spatial location. However, the limitations of the bracket design are: ① The assumed bracket is fixed above the chin bar rest adjustment handwheel of the slit lamp microscope. Moreover, the bracket consists of many components. Sometimes other devices need to be installed in this place, so other devices may be occupied. Installation space. ②The tentative bracket is through an The variable-diameter components are encapsulated with the chin holder of the slit lamp microscope, considering that the diameter of the chin holder of different types of slit lamp microscopes will be different. Therefore, the proposed bracket cannot be applied to various types of slit lamp microscopes. ③There are many movable joints of the tentative bracket, and there are many operation steps when adjusting the slit lamp front lens. ④ The imaginary bracket has magnetic joints, so it can only be made of magnetic metal, and it has a relatively heavy weight. Due to the influence of gravity, the position of the inspection space of the slit lamp front mirror may gradually hang down, which affects the quality of the fundus examination image. ⑤The hypothetical bracket has exposed joints that rely on magnetic connections. Dust in the air can affect the connection. The fastness of the joint may be caused by touching the magnetic joints (including the slit lamp front lens), which may damage the slit lamp front lens. ⑥ This conceived bracket is through the gooseneck semi-enclosed slit lamp front lens, and its holding stability needs to be improved. It may be damaged due to the detachment of the slit lamp front lens due to instability of holding. ⑦The hypothetical stent is connected to the slit lamp microscope through a half-enclosed gooseneck tube. Although there are only a few models of slit lamp front mirrors commonly used in clinical use, the diameters of them vary greatly, so they are not of different diameters. Slit lamp front mirrors can be used on this stand.

[0022] Using the auxiliary device of this application, after adjusting the position of the slit lamp front lens and obtaining a clear fundus image, you can take off the left hand holding the slit lamp front lens and let the auxiliary device move the slit lamp front lens The lens is kept in the required spatial position. In this way, the fatigue caused by holding the slit lamp front lens with one hand in the air for a long time is avoided, and the blur of the fundus image caused by the tremor of the hand muscles is also prevented. Moreover, the freed hand can also be used for other related operations, such as taking pictures of fundus images.

[0023] In addition, the auxiliary device of this application also has the following features: ① This device is hugged with the chin rest bracket under the chin rest adjustment hand wheel of the slit lamp microscope, and this part of the slit lamp microscope does not involve the installation of other devices, and The silicone tube is protected by a jacket, and it can be bent and positioned arbitrarily and is a non-rebounding metal coil. It is connected to the inner right-angle fixing clip and the slit lamp front mirror holder. The device has a simple and effective structure, so it will not hinder the installation of other devices. ②This device is encapsulated with the chin rest bracket under the chin rest adjustment handwheel of the slit lamp microscope through a pair of inner right-angle fixing clips. The inner right-angle fixing clip can be fixed on bracket tubes of different diameters, so the auxiliary device can be used in different models. Used on the slit lamp microscope. In addition, the silicone pad lining the fixing part can increase the static friction of the fixing part and make the fixing more stable. ③This device adjusts the three-dimensional position of the slit lamp front mirror by a metal coil that can be bent and positioned arbitrarily and does not rebound. The examiner holds the holding ring of the slit lamp front mirror, which drives the kinetic energy to bend and locate at will and does not rebound. The position of the metal coiled tube changes. After finding the best inspection space position of the slit lamp front mirror, you can remove the slit by letting go The slit lamp front mirror is kept in the inspection space, and the operation is simple. ④ In addition to the metal material of the snake tube, the inner liner of the holding half ring and the inner right-angle fixing clip is made of silicone material. The other parts of the device are made of light weight, high specific strength, low creep, and anti-aging engineering plastics. In addition, the structure is simple, the device itself is light in weight, and the space position of the slit lamp front lens will not hang down due to the influence of gravity, thereby affecting the quality of the fundus examination image. ⑤ The connectors of this device are mechanically connected to the slit lamp front mirror holder and the inner right-angle fixing clip, with few connection points and high connection reliability. ⑥ The width and diameter of the holding ring of the slit lamp front lens of this device are the same as the width and diameter of the smaller part of the middle diameter of the slit lamp front lens. After the encapsulation is completed, the edges of the two sides of the slit lamp front mirror with a larger diameter are respectively located on the two sides outside the encapsulation ring. Moreover, the inner lining of the hug ring can increase the static friction of the hug. It can be seen that, on this device, the front lens of the slit lamp is reliably locked and will not fall off. ⑦Considering the difference in the diameter of several slit lamp front mirrors commonly used in clinical practice, this device is equipped with different diameters of holding rings for these slit lamp front mirrors of different diameters. When necessary, entanglement rings of different diameters can be used. Therefore, the slit lamp front mirrors of these specifications can be used in this device.

[0024] It can be seen that the auxiliary device of the slit lamp microscope combined with the slit lamp front mirror examination of the fundus of this application can overcome the deficiencies of the above two methods. It can be used on different types of slit lamp microscopes and can be used with different specifications of the slit lamp microscope. The light front mirror cooperates, and the structure is reasonable, the use is convenient, and the effect of the fundus examination auxiliary device is brief. Brief description of the drawings

[0025] FIG. 1 is a schematic diagram of the structure of the slit lamp front mirror holder of the present invention.

[0026] FIG. 2 is a side view of a slit lamp front mirror holder.

[0027] FIG. 3 is a schematic view of the structure of the connector.

[0028] FIG. 4 is a schematic structural diagram of an inner right-angle fixing clip. The best embodiment for implementing the invention The best embodiment of the invention

[0029] An auxiliary device that can be used in the examination of the fundus with a slit lamp microscope combined with a front endoscope, which is characterized in that it includes an inner right-angle fixing clip, and the inner right-angle fixing clip has two left and right inner right-angle fixing clips. The right-angle fixing clip is fastened with bolts to complete the fixing of the inner right-angle fixing clip at the chin rest bracket under the chin rest adjustment handwheel of the slit lamp microscope; one of the left and right inner right-angle fixing clips has a connection with Pieces An internal threaded hole matched with a threaded joint; one end of the connecting piece is matedly connected with the above-mentioned internal threaded hole through a threaded joint, and the other end is threadedly connected with a slit lamp front lens holder; the slit lamp front lens holder includes left, The right two encapsulation half rings that hold the front lens of the slit lamp together and fix it so that the slit lamp front lens is in the ring formed by the two encapsulation half rings on the left and right; the two encapsulation half rings on the left and right are connected by a connecting hinge, The left and right two half-rings can be opened and closed as required; the left and right two half-rings are lined with silicone pads that increase the static friction between the half-rings and the front lens of the slit lamp, and make the fit more stable: on the left , The right two half-rings are provided with fastening holes for the fastening bolts of the fastening half-rings, and the holes are equipped with internal threads matching the fastening bolts. The fastening bolts are screwed in the internal threaded holes to complete the two fastenings. The engagement of the semi-ring on the front lens of the slit lamp;

[0030] The connecting piece includes a metal snake tube, the metal snake tube is sleeved with a silicone rubber tube, and both ends of the metal snake tube are respectively connected with a threaded joint.

[0031] The base of one of the left and right enveloping half rings has a base, and the bottom surface of the base is provided with an internal threaded hole for fitting with the threaded joint of the connector.

[0032] The silica gel pad is made of the following raw materials in parts by weight: 54 parts of polycaprolactam, 50 parts of polyethylene, 1 part of triphenyl phosphite, 3 parts of burning kaolin, 3 parts of antimony trioxide, 1 part of nano-active calcium carbonate , 3 parts of triphenyl phosphite, 3 parts of reinforcing fiber, 2 parts of decabromodiphenyl ether. Or use commercially available products.

[0033] Working method:

[0034] (1) Auxiliary device for installing the slit lamp front mirror on the slit lamp microscope

[0035] Positioning and fixing of the inner right-angle fixing clip at the chin rest bracket under the chin rest adjustment handwheel of the slit lamp microscope: Take the left and right two inner right-angle fixing clips (12), one of which has a threaded joint with the connector The clamp body of the matching internal threaded hole (17) faces the examiner, and the clamp body is inserted into the chin rest bracket under the chin rest adjustment handwheel of the slit lamp microscope; take the internal right-angle fixing clamp fastening bolts (15), respectively Pass through the fixing clip fastening bolt penetration hole (14) on the inner right angle fixing clip body, and screw into the fixing clip fastening bolt fastening hole (13) on the opposite inner right angle fixing clip body; two inner right angle fixing clamps Tighten the fixing bolts evenly and forcefully to make the silicone pad (16) tightly hug the chin rest bracket under the chin rest adjustment handwheel of the slit lamp microscope to complete the positioning and fixation of the inner right-angle fixing clip there;

[0036] Connection of the inner right-angle fixing clip and the slit lamp front mirror holder: Take the slit lamp front mirror holder and the connecting piece, and screw the threaded joint (11) at one end of the connecting piece into the inner right-angle fixing clip body. Screw the threaded joint of the connecting piece into the matching internal threaded hole, and screw it tightly; then screw the threaded joint at the other end of the connecting piece into the slit lamp front mirror clip The bottom surface of the holder base (7) is in the internal threaded hole (8) matched with the threaded joint of the connector, and tightened to complete the connection of the holder and the fixing clip;

[0037] Installation of the slit lamp front mirror on the slit lamp front mirror holder: Adjust the spatial position of the metal coil (10) covered with a silicone rubber tube sleeve (9) to facilitate the slit lamp front mirror in the slit lamp Installation on the front lens holder; then, unscrew the fastening bolts of the embracing half ring, open the embracing half ring, and make the smaller part of the slit lamp front mirror close to the inner lining of the embracing half ring silicone pad (3) , The two sides of the slit lamp front mirror with a larger diameter are located on the two sides outside the silicone pad. Close the half ring, tighten the fastening bolts of the half ring, complete the slit lamp front mirror in the slit lamp front mirror Installation on the holder;

[0038] (2) Observe the fundus of the examinee using the slit lamp front lens mounted on the slit lamp front lens holder

[0039] The examinee sits in the examination position of the slit lamp microscope, and tells the examinee to put his chin on the chin rest of the slit lamp microscope, and place the forehead against the head of the slit lamp microscope, adjust the chin rest adjustment hand wheel, Keep the examinee’s eyes in the best position for examination; The examiner uses the thumb and index finger of his left hand to hold the holding ring equipped with the slit lamp front lens, and drive the metal serpentine tube covering the silicone rubber tube to move to make the crack installed in the holding ring The front lens of the lamp is moved to the front of the examinee’s eyes; the space position of the front lens of the slit lamp is fine-tuned to make the fundus image intersect between the lens and the microscope; after a clear fundus image is seen, the use of the slit lamp microscope The magnification function magnifies the image; loosen the thumb and index finger of the left hand that originally held the slit lamp front lens holding ring, and free up the left hand to keep the slit lamp front lens in the above three-dimensional space; observe the fundus image of the slit lamp microscope , Take pictures and save images when necessary;

[0040] (3) The auxiliary device for removing the slit lamp front lens from the slit lamp microscope [0041] The auxiliary device for removing the slit lamp front lens from the slit lamp microscope can be regarded as installing the slit lamp front lens on the slit lamp microscope The reverse process of the mirror assist device; that is, in sequence, the examiner holds the holding ring with the slit lamp front mirror and moves it to a place that is convenient for disassembly; loosen the fastening bolts of the holding half ring, open the holding half ring, and take out the slit lamp front mirror , Close the embracing half ring, and tighten the fastening bolts of the embracing half ring.

[0042] In general, after the slit lamp front lens is taken out, the auxiliary device of the slit lamp front lens can be left on the slit lamp microscope for future use. If you need to completely remove the auxiliary device of the slit lamp front lens from the slit lamp microscope, turn the holder base in order, leave the threaded joint connected to it, and remove the holder; reverse the connection piece, remove Connecting piece; loosen the fastening bolt of the fixing clip, adjust the chin support under the handwheel from the chin support Take out the fixing clip from the rack. Specific implementation of invention embodiments

[0043] 1. Connecting hinge: connect the two encapsulated half-rings of the slit lamp front mirror, so that the two encapsulated half-rings can be opened and closed as required

[0044] 2. Enclosed half-rings: Through the action of two enclosing half-rings, fix the slit lamp front lens in the circle formed by the two enclosing half-rings.

[0045] 3. The embracing half ring is lined with silicone pad: Increase the static friction between the embracing half ring and the slit lamp front lens, so that the embracing is more stable.

4. The fastening bolt penetration hole of the enclosing half ring: This hole has no internal thread, and the fastening bolt of the enclosing half ring is passed through and screwed into the internal threaded hole of the opposite enclosing half ring and its matching:

[0047] 5. The fastening bolts of the enclosing half ring: cooperate with the enclosing half ring to form a stable enclosing ring.

[0048] 6. The fastening hole of the fastening bolt of the enclosing half ring: The hole has an internal threaded hole matching the fastening bolt: through the screwing of the fastening bolt in the internal threaded hole, the two enclosing half ring is completed for the slit lamp Hugging of the front mirror.

[0049] 7. Base: Directly connect one embracing half ring, and connect another embracing half ring through a connecting hinge, and an internal threaded hole matching the threaded joint of the connector is provided on its bottom surface.

[0050] 8. The inner threaded hole matching the bottom surface of the base and the threaded joint of the connecting piece: cooperate with the threaded joint of the connecting piece, and connect the base to the connecting piece of the slit lamp front mirror holder and the inner right-angle fixing clip.

[0051] 9. Silicone rubber tube sleeve: set on the metal snake tube and protect it.

[0052] 10. Metal snake tube: The metal snake tube has the characteristics of arbitrarily bending and positioning without rebound, which is used to adjust the three-dimensional space position of the slit lamp front mirror.

[0053] 11. Threaded joints: located at the two ends of the slit lamp front mirror holder and the inner right-angle fixing clip connector, respectively connecting the slit lamp front mirror holder base and the inner right-angle fixing clip and the connecting piece. Internal threaded hole.

[0054] 12. Internal right-angle fixing clamp body: This device has 2 internal right-angle fixing clamp bodies (one of the clamp bodies has an internal threaded hole matching the threaded joint of the connector), which is matched with the fastening bolt of the internal right-angle fixing clamp , Finish the fixation of the inner right-angle fixing clip on the chin rest bracket under the chin rest adjustment hand wheel of the slit lamp microscope. [0055] 13. Fastening hole for the fastening bolt of the fixing clip: The hole has an internal threaded hole: Adjust the distance between the two internal right-angle fixing clip bodies by screwing the fastening bolt in the internal threaded hole to complete Fixed clip on the slit lamp microscope The chin rest adjusts the fixation of the chin rest bracket under the hand wheel.

14. Fixing clip fastening bolt penetration hole: This hole has no internal thread, allowing the inner right-angle fixing clip fastening bolt to pass through, and screw into the opposite inner right-angle fixing clip body and its matching internal threaded hole.

[0057] 15. Fastening bolts of the inner right-angle fixing clip: cooperate with the inner right-angle fixing clip body to complete the fixing of the inner right-angle fixing clip at the chin rest bracket under the chin rest adjustment hand wheel of the slit lamp microscope.

[0058] 16. Silicone pad: protects the chin rest bracket under the chin rest adjustment handwheel of the slit lamp microscope, and increases the static friction between the inner right-angle fixing clip and the part.

[0059] 17. Internal threaded hole: in conjunction with the threaded joint, the internal right-angle fixing clip is connected to the slit lamp front mirror holder and the internal right-angle fixing clip connecting piece.

Claims

[Claim 1] An auxiliary device that can be used in the examination of the fundus by a slit lamp microscope combined with a front endoscope, characterized in that it includes an inner right-angle fixing clip, and the inner right-angle fixing clip has two left and right inner right-angle fixing clips. Cooperate with the fastening bolts of the inner right-angle fixing clip to complete the fixing of the inner right-angle fixing clip at the chin rest bracket under the chin rest adjustment handwheel of the slit lamp microscope; An internal threaded hole matched with the threaded joint of the connecting piece; one end of the connecting piece is matedly connected with the above-mentioned internal threaded hole through a threaded joint, and the other end is threadedly connected with the slit lamp front lens holder; the slit lamp front lens holder Including the left and right two enclosing half rings for holding the slit lamp front lens together and fixing the slit lamp front lens in the circle formed by the left and right enclosing half rings; the left and right two enclosing half rings are connected by Hinge connection enables the left and right two half-loops to be opened and closed as required; the left and right two half-loops are lined with silicone pads that increase the static friction between the half-loops and the slit lamp front lens, and make the fit more stable : There are fastening holes for fastening bolts of the fastening half-rings on the left and right fastening half-rings. The holes have internal threads matching the fastening bolts. The fastening bolts are screwed into the internal threaded holes to complete The two embracing half-rings hold the slit lamp front mirror; the connecting piece includes a metal coiled tube, the metal coiled tube is sleeved with a silicone rubber tube, and both ends of the metal coiled tube are respectively connected with a threaded joint.

[Claim 2] The auxiliary device that can be used in the examination of the fundus by the slit lamp microscope combined with the front endoscope according to claim 1, characterized in that: the base of one of the left and right enclosing half rings has a base, and the base The bottom surface of the seat is provided with an internal threaded hole matched with the threaded joint of the connector.

[Claim 3] The auxiliary device that can be used in the examination of the fundus of the slit lamp microscope combined with the front endoscope according to claim 1 or 2, characterized in that: the silica gel pad is made of the following parts by weight of raw materials: 54 parts of polycaprolactam , Polyethylene 50 parts, Triphenyl phosphite 1 part, Burning kaolin 3 parts, Antimony trioxide 3 parts, Nano active calcium carbonate 1 part, Triphenyl phosphite 3 parts, Reinforcing fiber 3 parts, Decabromodiphenyl 2 parts of ether.

4. The auxiliary device that can be used in the examination of fundus by slit lamp microscope combined with front endoscope according to claim 1 or 2, characterized in that: working method:

(1) Auxiliary device for installing the slit lamp front mirror on the slit lamp microscope Positioning and fixing of the inner right-angle fixing clip at the chin rest bracket under the chin rest adjustment handwheel of the slit lamp microscope: Take the left and right two inner right-angle fixing clips (12), one of which has an inner fitting with the threaded joint of the connector With the clamp body of the threaded hole (17) facing the examiner, set the clamp body into the chin rest bracket under the chin rest adjustment handwheel of the slit lamp microscope; take the inner right-angle fixing clamp fastening bolts (15) and pass them through the inner The fixing clip fastening bolt penetration hole (14) on the right angle fixing clip body is screwed into the fixing clip fastening bolt fastening hole on the right angle fixing clip body on the opposite side

(13); Tighten the two inner right-angle fixing clip fastening bolts evenly and forcefully to make the silicone pad (16) tightly hug the chin rest bracket under the chin rest adjustment handwheel of the slit lamp microscope to complete the inner right-angle fixing clip at this place Positioning and fixing; the connection between the internal right-angle fixing clip and the slit lamp front lens holder: Take the slit lamp front lens holder and the connecting piece, and screw the threaded joint (11) at one end of the connecting piece into the inner right-angle fixing clamp body Screw the threaded joint on the other end of the connecting piece into the internal threaded hole matching the threaded joint of the connecting piece and screw it into the base of the slit lamp front lens holder (7). The bottom surface of the threaded joint of the connecting piece is matched with the internal thread of the threaded joint of the connecting piece. In the hole (8), and tighten it to complete the connection of the holder and the fixing clip; The installation of the slit lamp front mirror on the slit lamp front mirror holder: The adjustment sleeve is covered with a silicone rubber tube sleeve

(9) The space position of the metal coil (10) to facilitate the installation of the slit lamp front lens on the slit lamp front lens holder; then, unscrew the fastening bolts of the holding half ring, and open the holding half ring to make The small diameter part of the slit lamp front lens is close to the inner lining of the silicone cushion (3), and the two sides of the slit lamp front lens with larger diameter are located on the two sides outside the silicone cushion. Close the encapsulation half. Ring, tighten the half-ring fastening bolts to complete the installation of the slit lamp front mirror on the slit lamp front mirror holder;

(2) Use the slit lamp front lens mounted on the slit lamp front lens holder to observe the fundus of the examinee. The examinee sits in the examination position of the slit lamp microscope and tells the examinee to hold his chin Place it on the chin rest of the slit lamp microscope, stick the head rest of the slit lamp microscope on the forehead, adjust the chin rest adjustment hand wheel, so that the examinee’s eyes are in the best examination position; the examiner uses the thumb and index finger of the left hand to hold the installation The holding ring of the slit lamp front mirror drives the metal coil of the silicone rubber tube to move, so that the slit lamp front mirror installed in the holding ring moves to the examinee’s In front of the eye; by fine-tuning the spatial position of the slit lamp front lens, the fundus image is intersected between the lens and the microscope; after seeing a clear fundus image, use the magnification function of the slit lamp microscope to magnify the image; loosen the original hold The slit lamp front lens embraces the thumb and index finger of the left hand of the ring, and frees the left hand to keep the slit lamp front lens in the above-mentioned three-dimensional space; observe the fundus image of the slit lamp microscope, take pictures and save the images if necessary;

(3) Removing the auxiliary device for the slit lamp front mirror from the slit lamp microscope The auxiliary device for removing the slit lamp front mirror from the slit lamp microscope can be regarded as the reverse process of installing the slit lamp front mirror auxiliary device on the slit lamp microscope ; That is, according to the sequence, the examiner holds the holding ring with the slit lamp front lens installed and moved it to a place that is convenient for disassembly; loosen the fastening bolts of the holding half ring, open the holding half ring, take out the slit lamp front lens, and close the holding half ring , Tighten the half-ring fastening bolts.