Retinal depressor

Abstract

The present application belongs to the field of medical device technology, and aims to solve the problem of intraoperative retinal fixation. Specifically, it relates to a retinal depressor for fixing the retina during vitreous surgery, which is generally used in subretinal surgery, and comprises a first component, a second component, and a third component connected in sequence; the second component is arranged at a first preset angle with the first component to form a fixing surface for the retina; the third component is used to fix a traction line; the longitudinal axis of the third component is arranged at a second preset angle with the fixing surface; when placed in the vitreous cavity, due to the effect of gravity, the depressor as a whole will sink to the posterior pole of the entire eyeball, the second component and the first component form a suppressing surface for the retina, and the tilted third component does not interfere with the retina, and the fixed traction line facilitates the adjustment of the delivery position and the suppressing position of the first component and the second component, so as to complete the suppression of the preset position of the retina, with high precision and strong flexibility.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a retinal suppressor. Background Art

[0002] The retina is a transparent, film-like neural tissue that receives external light and generates electrical signals, which are transmitted to the brain through the optic nerve, and the information is integrated to form vision. When the retina is detached, it is easy to float in the vitreous cavity and needs to be repositioned surgically to achieve the purpose of treatment. During surgeries such as age-related macular degeneration (AMD) or polypoidal choroidal vasculopathy (PCV) that require treatment of subretinal hemorrhage, new blood vessels, abnormal tissue, and RPE transplantation, how to fix the lightweight retina has become a clinical problem that plagues ophthalmologists. Summary of the invention

[0003] In order to solve the problem of retinal fixation during surgery, the present application provides a retinal suppressor.

[0004] The retinal suppressor provided in this application adopts the following technical solution:

[0005] A retinal depressor, used for fixing the retina during vitreous surgery, comprises a first component, a second component, and a third component connected in sequence; the second component is arranged at a first preset angle with the first component to form a fixing surface for the retina; the third component is used for fixing a traction line;

[0006] The longitudinal axis of the third component is arranged at a second preset angle with the fixing surface.

[0007] By adopting the above technical solution, when placed in the vitreous cavity, due to the effect of gravity, the whole suppressor will sink to the posterior pole of the entire eyeball, and the second component and the first component will form a suppressing surface for the retina to ensure the fixing effect. The third component that is tilted does not interfere with the retina. Through the fixed traction line, it is convenient to adjust the delivery position of the first component and the second component and the suppressing position to suppress the preset position of the retina with high accuracy and strong flexibility.

[0008] Preferably, the first component comprises a cylindrical section and a guide section, wherein the guide section is arranged at one end of the cylindrical section away from the second component; the outer diameter of the guide section is not greater than the outer diameter of the cylindrical section;

[0009] The guide section is arranged to expand in the reverse direction, and the free end of the guide section is a blunt round surface.

[0010] By adopting the above technical solution, the portion of the first component away from the second component is gradually reduced in radial symmetry, and the outer diameter of the end portion is small, which is convenient for rapid passage through the puncture hole and has a good guiding effect.

[0011] Preferably, the length of the first component is L1, the length of the second component is L2,

[0012] By adopting the above technical solution, the first component can be prevented from being too long, which would affect the overall feeding.

[0013] Preferably, the third component is a columnar structure; the outer diameter of the third component is not greater than the outer diameter of the second component;

[0014] The third component is provided with a traction line connection portion;

[0015] The length of the third component is L3, and the distance from the connection portion between the third component and the second component to the connection portion of the traction line is L4.

[0016]

[0017] By adopting the above technical solution, the traction line connection part is arranged in the area of ​​the third component close to the free end to prevent the connected traction line from being entangled in the vitreous body. The arrangement close to the free end allows the other end of the traction line connected in the traction line connection part to remain outside the puncture hole in the eyeball wall when the first component and the second component perform retinal suppression, so that the position of the first component and the second component can be adjusted from the outside through the traction line, which has high flexibility.

[0018] Preferably, the traction line connecting portion is a groove;

[0019] and / or,

[0020] The traction line connecting portion is a through hole;

[0021] and / or,

[0022] The traction line connecting portion is a threaded section.

[0023] By adopting the above technical solution, the connection strength between the traction line and the third component is ensured, and the traction line is prevented from loosening and detaching when the overall position is adjusted during surgery.

[0024] Preferably, the first preset angle is θ1, θ1∈[80°, 100°].

[0025] By adopting the above technical solution, it is ensured that the suppression surface formed by the first component and the second component has a good suppression effect.

[0026] Preferably, the connection between the first component and the second component, and the connection between the second component and the third component are both arc transition structures.

[0027] By adopting the above technical solution, the connection of the arc transition forms a blunt surface contact, which prevents the eye membrane from being scratched during the insertion process and the retina from being scratched when inserted into the vitreous body, thereby avoiding secondary damage.

[0028] Preferably, the second preset angle is θ2, θ2∈[15°, 30°].

[0029] By adopting the above technical solution, the third component is slightly tilted, which can not only realize the setting of the traction line, but also prevent interference with the retina and vitreous body.

[0030] Preferably, the first component, the second component and the third component are integrally formed.

[0031] By adopting the above technical solution, the appearance is good, and at the same time, gaps at the joints of different parts are prevented from affecting the overall quality; the one-piece molding setting has a good disinfection effect, and there will be no cross infection when used in different surgeries.

[0032] Preferably, the first component, the second component and the third component are all made of pure gold.

[0033] By adopting the above technical solution, the surgical needs can be met without causing additional damage to the human body.

[0034] In summary, the present application includes at least one of the following beneficial technical effects:

[0035] 1. Through the first component and the second component provided in the present application, a fixing surface for the detached retina is formed in the vitreous cavity, thereby ensuring the stability of retinal fixation, effectively preventing the detached retina from floating in the vitreous cavity, and preventing damage to the retina; through the provision of the raised third component, convenient control of the position of the fixing surface can be achieved; the third component can fix the traction line, which is convenient for adjusting the delivery position and the suppression position of the first component and the second component, so as to suppress the preset position of the retina, and can be quickly removed during surgery, with high precision and strong flexibility.

[0036] 2. This application can be used repeatedly after disinfection, effectively reducing the economic burden on patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram when the application is in working state.

[0038] Figure 2 It is a structural schematic diagram of the first embodiment of the present application.

[0039] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A.

[0040] Figure 4 It is a structural schematic diagram of the second embodiment of the present application.

[0041] Figure 5 It is a structural schematic diagram of the third embodiment of the present application.

[0042] Figure 6 yes Figure 5 A partial enlarged schematic diagram of part B.

[0043] Explanation of the accompanying drawings: 1. Retina; 2. Vitreous body; 3. Lens; 4. Pupil; 5. Cornea; 6. Surgical incision; 10. First component; 11. Cylindrical segment; 12. Guide segment; 20. Second component; 30. Third component; 31. Pull wire connecting portion; 40. Pull wire. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1 To Attachment Figure 6 This application is described in further detail.

[0045] The embodiment of the present application discloses a retinal suppressor.

[0046] Reference Figure 1 The retinal depressor disclosed in the present application is mainly used for surgery under retina 1, such as macular degeneration, PCV or surgical treatment requiring subretinal operation. In the operation, intervention is first required to cause detachment of retina 1, and after turning up retina 1, the subretinal tissue 1 is removed, blood is removed, etc. After retina 1 is turned up, due to the presence of liquid and liquid flow in the cavity where vitreous body 2 is located, the detached retina 1 floats in the cavity of vitreous body 2 due to the effect of liquid, which is easy to cause damage to retina 1; in the operation, the retinal depressor is inserted into the cavity of vitreous body 2 through surgical incision 6, and due to the effect of gravity, it can be directly pressed on the outer surface of the turned-up retina 1 to fix the retina 1 to the posterior pole of the cavity of vitreous body 2. In the operation, the forceps are controlled to extend from the surgical incision 6 to adjust the position of the retinal depressor; after the subretinal operation 1 is completed, the retinal depressor is removed from the surgical incision 6 through the traction line fixed on the retinal depressor, which does not affect the next step of retinal 1 resetting operation.

[0047] In the present application, the posterior pole refers to the side wall area of ​​the chamber of the vitreous body 2 close to the bottom, which ensures the effective fixation of the detached retinal point 1.

[0048] In the eyeball, the pupil 4 can always keep a proper amount of light entering the eye, so that the image of the object falling on the retina 1 is clear, but there will be no excessive light to burn the retina 1; the lens 3 is located inside the eyeball, mainly in the front half of the eyeball, with the vitreous body 2 behind it, the cornea 5 and the aqueous humor and iris behind the cornea 5 in front of it, and the ciliary body and iris can be touched around it, similar to a convex lens, just like a convex lens like a magnifying glass in the eyeball, with both ends fixed by suspensory ligaments and suspended behind the iris and in front of the vitreous body 2, and it is one of the important refractive substances of the eyeball. The vitreous body 2 is an eyeball inclusion, a colorless and transparent gel-like substance, and the surface is covered with a glass membrane; the vitreous body 2 is filled between the lens 3 and the retina 1, accounting for about 4 / 5 of the eye cavity, and the vitreous body 2 supports the retina 1, so that the retina 1 is closely attached to the pigment epithelium. Retina 1 is a very important tissue in our eyes. After all the light enters the eye, it will be imaged on retina 1 so that we can see this clear image clearly. Therefore, when performing surgery under retina 1, the integrity of retina 1 is very critical. If retina 1 is damaged during the process, it will cause secondary damage to the patient.

[0049] Reference Figure 2 and Figure 3 In the first embodiment of the present application, a retinal depressor for fixing the retina 1 in a vitreous body 2 surgery comprises a first component 10, a second component 20, and a third component 30 connected in sequence, wherein the first component 10 is the head and the third component 30 is the tail. During the operation, the third component 30 is clamped with tweezers specially used for minimally invasive surgery to manipulate the first component 10 and the second component 20 to pass through the surgical incision 6, and the whole is sent into the chamber of the vitreous body 2, and the retinal depressor sinks by gravity to fix the detached retina 1 to the posterior pole of the chamber of the vitreous body 2. The connection between the first component 10 and the second component 20 and the connection between the second component 20 and the third component 30 are both arc transition structures. The arc transition connection avoids the generation of sharp corners, and the arc surface formed prevents scratching of the eye membrane during the insertion process and scratching of the retina 1 when inserted into the vitreous body 2, thereby avoiding secondary damage.

[0050] The second component 20 and the first component 10 are arranged at a first preset angle to form a fixing surface for the retina 1, wherein the first preset angle is θ1, θ1∈[80°, 100°], to ensure that the suppression surface formed by the first component 10 and the second component 20 has a good suppression effect. The suppression surface formed by an angle that is too small or too large cannot achieve the preset suppression effect on the area between the first component 10 and the second component 20.

[0051] It should be noted that the present application is applicable to minimally invasive surgery, and the diameter of the micro-incision surgery is approximately 0.4-0.5 mm. The size of the retinal suppressor disclosed in the present application only needs to meet the requirements of the passage of the surgical incision 6 and the suppression of the retina 1, so the specific size of the retinal suppressor will not be repeated.

[0052] The first component 10 serving as the head includes a cylindrical section 11 and a guide section 12. The guide section 12 is arranged at one end of the cylindrical section 11 away from the second component 20, that is, the cylindrical section 11 is a column section connected to the second component 20. The diameter of the cylindrical section 11 is set to be consistent with the diameter of the second component 20 to ensure the stability and effectiveness of the fixing surface; the outer diameter of the guide section 12 is not larger than the outer diameter of the cylindrical section 11, thereby ensuring smooth introduction along the surgical incision 6 while ensuring the suppression effect.

[0053] In the application, the guide section 12 is preferably set to expand in the opposite direction, and the free end of the guide section 12 is a blunt round surface, that is, the part of the first component 10 away from the second component 20 is gradually radially symmetrically reduced, and the outer diameter of the end is small, which is convenient for rapid passage through the puncture hole and rapid introduction.

[0054] The length of the first component 10 is L1, the length of the second component 20 is L2, Prevent the first component 10 from being too long, which would affect the overall feeding.

[0055] The third component 30 is a columnar structure, which is used to fix the traction line. Its longitudinal axis is set at a second preset angle with the fixing surface. The second preset angle is θ2, θ2∈[15°, 30°], that is, the third component 30 and the fixing surface are located in different planes. The third component 30 is slightly tilted, which is convenient for clamping and adjusting the tweezers and setting the traction line during surgery, and at the same time prevents interference with the retina 1 and vitreous body 2 while satisfying the suppression effect.

[0056] The outer diameter of the third component 30 is not greater than the outer diameter of the second component 20. When the detached retina 1 is fixed to the posterior pole of the vitreous body 2 chamber as a whole, since the interior of the vitreous body 2 chamber is spherical, if the diameter of the third component 30 is too large, it itself has a certain weight, and when it is on the lower side wall of the spherical surface, it may cause instability of the first component 10 and the second component 20. Therefore, the outer diameter of the third component 30 is less than or equal to the outer diameter of the second component 20, which can effectively ensure the suppression stability of the first component 10 and the second component 20, and effectively prevent the instability from causing damage to the retina 1.

[0057] The third component 30 is provided with a traction line connection portion 31; the length of the third component 30 is L3, and the distance from the connection portion between the third component 30 and the second component 20 to the traction line connection portion 31 is L4. That is, the traction line connection part 31 is arranged near the rear end of the third component 30 to prevent the connected traction line from being entangled in the vitreous body 2, and is arranged near the free end. When the first component 10 and the second component 20 suppress the retina 1, the other end of the traction line connected to the traction line connection part 31 remains outside the puncture hole in the eyeball wall, which is convenient for quickly determining the current position of the first component 10 and the second component 20 along the traction line on the outside and facilitating rapid adjustment, and has high flexibility.

[0058] In this embodiment, the traction line connection portion 31 is a groove. Before the operation, the traction line is fixedly bound in the groove. The groove area where the traction line is bound is not higher than the top of the groove to prevent the formation of lumps in the groove area and affect the insertion or removal of the surgical incision 6.

[0059] In a preferred embodiment of the present application, the first component 10, the second component 20 and the third component 30 are integrally formed, which has a good appearance and prevents the existence of gaps at the connections between different components, which affects the overall quality; the integrally formed setting has a good disinfection effect and prevents inadequate disinfection in the connection gaps of the separate connections, and there will be no cross-infection when used in different surgeries.

[0060] The first component 10 , the second component 20 , and the third component 30 are all made of pure gold, which can meet the surgical requirements without causing additional damage to the human body.

[0061] The preferred traction wire is No. 7 wire to meet the needs of minimally invasive surgery.

[0062] Reference Figure 4 In another embodiment of the present application, the traction line connection portion 31 is a threaded segment, and the thread groove of the threaded segment is arranged lower than the outer side of the third component 30. The threaded segment increases the friction with the traction line and improves the fixing strength.

[0063] Reference Figure 5 and Figure 6 In the third embodiment of the present application, the traction line connection portion 31 is a through hole, through which the traction line is passed to prevent the traction line from loosening and detaching when the overall position is adjusted during the operation.

[0064] The implementation principle of a retinal suppressor in the embodiment of the present application is as follows: by clamping the third component 30, the overall smooth delivery is achieved. When placed in the cavity where the vitreous body 2 is located, due to the effect of gravity, the suppressor as a whole sinks to the posterior pole in the eyeball, that is, the posterior pole of the vitreous body 2 chamber. The second component 20 and the first component 10 form a suppressing surface for the retina 1 to ensure the fixing effect. The tilted third component 30 does not interfere with the retina 1. Through the fixed traction line, it is convenient to confirm and adjust the position of the first component 10 and the second component 20 to suppress the preset position of the retina 1 with high accuracy and strong flexibility. After completing the operation under the retina 1, the overall unit is taken out from the surgical incision 6 through the traction line. The operation is simple and convenient, and it can be reused after disinfection.

[0065] During the operation, the patient lies on the operating table with his eyes looking upward, and three surgical incisions are made on the wall of the eyeball, one for perfusion and the other two as operation holes. The surgical incisions used in this application are operation holes, because the diameters of the trocar and the surgical instruments are very small, and only three very small needle holes (with a diameter of 0.5 mm) are needed to pass through the wall of the eyeball. Therefore, after the trocar is removed, the incision can close by itself, without the need for suturing, and the trauma is very small.

[0066] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A retinal depressor for fixing a retina (1) during vitreous surgery (2), characterized in that: It comprises a first component (10), a second component (20), and a third component (30) which are connected in sequence; the second component (20) and the first component (10) are arranged at a first preset angle to form a fixing surface for the retina (1); the third component (30) is used to fix the traction line; The longitudinal axis of the third component (30) is arranged at a second preset angle with the fixing surface; The length of the first component (10) is L1, the length of the second component (20) is L2, ; The third component (30) is a columnar structure; the outer diameter of the third component (30) is not greater than the outer diameter of the second component (20); The third component (30) is provided with a traction line connection portion (31); The length of the third component (30) is L3, the distance from the connection portion of the third component (30) and the second component (20) to the traction line connection portion (31) is L4, ; L 3 ∈ 0 ， 1 2 L 2 。 2. The retinal suppressor according to claim 1, characterized in that: The first component (10) comprises a cylindrical section (11) and a guide section (12); the guide section (12) is arranged at an end of the cylindrical section (11) away from the second component (20); the outer diameter of the guide section (12) is not greater than the outer diameter of the cylindrical section (11); The guide section (12) is arranged to expand in the reverse direction, and the free end of the guide section (12) is a blunt round surface.

3. The retinal suppressor according to claim 1, characterized in that: The traction line connection portion (31) is a groove; and / or, The traction line connection portion (31) is a through hole; and / or, The traction line connection portion (31) is a threaded section.

4. The retinal suppressor according to claim 1, characterized in that: The first preset angle is θ1, θ1∈[80°, 100°].

5. The retinal suppressor according to claim 1, characterized in that: The connection between the first component (10) and the second component (20), and the connection between the second component (20) and the third component (30) are both arc transition structures.

6. The retinal suppressor according to claim 1, characterized in that: The second preset angle is θ2, θ2∈[15°, 30°].

7. The retinal suppressor according to claim 1, characterized in that: The first component (10), the second component (20) and the third component (30) are integrally formed.

8. The retinal suppressor according to claim 1, characterized in that: The first component (10), the second component (20), and the third component (30) are all made of pure gold.

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