Capsular scissors for cataract surgery

Abstract

The present invention relates to the field of medical device technology, specifically a capsular scissors for cataract surgery, comprising a first rod, a second rod, a first blade, a second blade, a connecting assembly, a first elastic sheet, a second elastic sheet, a rotating assembly and a telescopic assembly. The present invention changes the force angle during operation by cooperating with the connecting assembly and the rotating assembly, reducing the corneal incision required to be opened, so as to facilitate subsequent patient recovery, prevent conventional capsular scissors from opening and closing and causing the corneal incision to increase, and prevent the problem that the size and position of the capsular incision are difficult to control with capsulotomy forceps. The capsular membrane can be cut more accurately, and the size can be controlled, and the cutting edge is smooth, so as to facilitate subsequent patient recovery and surgical operations. The telescopic assembly and the elastic sheet ensure operability when reducing the shearing angle, thereby improving the accuracy of the surgery, preventing damage to the intraocular tissue during the surgery, and improving the safety and effectiveness of the surgery.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a capsular scissors used for cataract surgery. Background Art

[0002] Capsular scissors are surgical instruments used to cut and peel the lens capsule. During cataract surgery, they are used to cut and peel the lens capsule, allowing the surgeon to remove the lens and implant an intraocular lens, a procedure that requires extreme precision and stability.

[0003] There are three main methods for cataract surgery at present, namely extracapsular cataract extraction, phacoemulsification and femtosecond laser-assisted cataract surgery. Extracapsular cataract extraction usually uses the switch-type capsulotomy method to deliver the lens, which uses capsulotomy scissors to deliver the lens, and then implants a hard artificial lens. The incision is moderate, and the incision size is usually 6-8mm. Compared with phacoemulsification, it has the advantage of lower cost. It is currently used in some economically backward areas, or in patients who cannot implant a foldable artificial lens due to capsule displacement; in phacoemulsification, a small incision is made in the cornea of ​​the operated eye, and a circular cut is cut on the surface of the capsule after the capsulotomy forceps or capsulotomy scissors are inserted into the incision. The phacoemulsification probe is then inserted into the incision to break up the cloudy lens and cortex into a chyle. At the same time, the chyle is sucked out with a suction and irrigation system while keeping the anterior chamber filled. Finally, a foldable intraocular lens is implanted. Its incision is smaller than that of extracapsular cataract extraction and recovery is faster. It is currently the most commonly used surgical procedure. Femtosecond laser-assisted cataract surgery uses femtosecond laser to assist in surgical operations based on phacoemulsification lens extraction. It can make more precise surgical incisions and pre-cleave the lens, thereby further improving the precision of the surgery. It has less trauma, faster recovery, and fewer complications, but the cost is higher, and there are certain conditions for the patient's eye conditions, and there is a higher risk of complex conditions such as complex symptoms.

[0004] In cataract surgery, due to the presence of important tissues such as the cornea, lens and retina in the eye, the less energy generated during the operation, the less damage to other tissues, which is more convenient for postoperative recovery and reduces the occurrence of complications; capsular scissors are mainly used in extracapsular cataract extraction, and sometimes in phacoemulsification lens extraction. For extracapsular cataract extraction, the smaller the corneal incision, the less energy is generated; for phacoemulsification lens extraction, due to the smaller incision on the cornea, capsulotomy forceps are generally used as the main means of tearing the capsule. Capsular scissors can only be used for auxiliary use due to their large use angle. However, since the capsulotomy operation is difficult to control, it is difficult to accurately tear it into a regular circular opening, which is more common for inexperienced doctors. The opening of the capsule may be too large, too small, not centered or not round, which has a certain impact on subsequent surgical operations and postoperative patient recovery.

[0005] Therefore, a capsular scissors for cataract surgery is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide a capsular scissors for cataract surgery, which can reduce the impact on the cornea during operation, change the force angle during operation by connecting the components, reduce the impact on the corneal incision, reduce the impact on the eye during surgery, and cooperate with the rotating components to better operate in inconvenient cutting positions, further reduce the opening of the cornea, and can be used in conjunction with capsulotomy forceps during phacoemulsification lens extraction to perform a more accurate and controllable capsular opening.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A capsular scissors for cataract surgery comprises a first rod, a second rod, a first blade, a second blade, a connecting assembly, a first elastic sheet, a second elastic sheet, a rotating assembly and a telescopic assembly; the first blade is connected to the first rod via the connecting assembly, the second blade is connected to the second rod via the connecting assembly, the first blade and the second blade are rotatably connected via the connecting assembly, the first elastic sheet is sleeved with the second elastic sheet, the first rod is connected to the first elastic sheet, the second rod is connected to the second elastic sheet, both ends of the telescopic assembly are respectively connected to the first rod and the second rod, and pressing the outer sides of the first rod and the second rod in the horizontal direction causes the connecting assembly to drive the second blade to close up and down with the first blade; the rotating assembly can adjust the angles between the first blade and the second blade and the first rod and the second rod.

[0009] It can be seen that during cataract surgery, the surgeries that generally use capsular scissors are extracapsular cataract extraction or phacoemulsification lens removal. The capsular scissors use a conventional cross-cutting method to cut the anterior capsule. In extracapsular cataract extraction, in order to use capsular scissors to open the anterior capsule, the length of the incision on the cornea is larger than that in phacoemulsification lens removal. In phacoemulsification lens removal, due to the use of minimally invasive opening, the opening on the cornea is smaller. Therefore, when making an incision on the anterior capsule, capsulotomy forceps are generally used to perform the capsulotomy operation. However, the capsulotomy process is not easy to control accurately, and the capsular scissors are only used to assist in the initial opening or sometimes when the corneal opening needs to be increased.

[0010] Preferably, the connecting assembly includes a first connecting rod fixedly connected to the side of the first blade close to the first rod body, a second connecting rod fixedly connected to the side of the second blade close to the second rod body, a rotating shaft rotatably connected to the first connecting rod and the second connecting rod respectively, an axis plate fixedly connected to the side of the first connecting rod close to the first rod body, a driving rod fixedly connected to the side of the second connecting rod close to the second rod body, a first extrusion plate fixedly connected to one end of the first rod body close to the first blade, and a second extrusion plate fixedly connected to one end of the second rod body close to the second blade.

[0011] In the above scheme, when the outer sides of the first rod body and the second rod body are pressed, the first rod body and the second rod body will approach each other under the constraints of the first elastic sheet and the second elastic sheet, and the driving rod will be pressed down away from one end of the second blade through the first extrusion plate and the second extrusion plate, so that the second blade and the first blade are closed to achieve shearing.

[0012] It can be seen that during cataract surgery, if the conventional cross-opening and closing shearing method is used, the required corneal incision is large, which is extremely inconvenient to operate during phacoemulsification lens extraction. By changing the angle, the corneal opening can be reduced during extracapsular cataract extraction, and it is easier to use capsular scissors during phacoemulsification lens extraction. The capsular scissors can improve the difficulty of operating the capsulotomy forceps, as well as the problems of uneven incision and inconvenience in controlling the size.

[0013] Preferably, the rotating assembly includes a rotating adjustment plate fixedly connected to the axis plate, a rotating adjustment rod arranged inside the first rod body and connected to the rotating adjustment plate near one end of the first rod body, a blocking plate fixedly connected to the rotating adjustment rod, two sets of transmission rods rotatably connected to both sides of the rotating adjustment rod, a position indicating plate rotatably connected to the transmission rod, a spring respectively connected to the position indicating plate and the first rod body at both ends, a sliding groove arranged on the rotating adjustment plate, and a rotating connecting rod rotatably connected to the rotating adjustment rod; the displacement of the rotating adjustment rod along the axis of the first rod body will drive the displacement of one side of the rotating adjustment plate.

[0014] In the above scheme, when the rotating adjustment rod is displaced toward the first blade or the second blade, the rotating connecting rod will be driven to displace at the same time, and the rotating adjustment plate will be driven to displace by rotating the rotating connecting rod. When only one side of the rotating adjustment rod is displaced, the rotating adjustment plate will rotate with the other set of rotating connecting rods as the axis, and drive the first blade and the second blade to rotate as a whole through the connecting assembly, thereby changing the angle between the first blade and the second blade as a whole relative to the first rod body and the second rod body.

[0015] It can be seen that when conventional capsular scissors are used, since the anterior capsule needs to be cut in a circular shape, a certain angle needs to be adjusted before cutting. At this time, the larger the adjustment angle, the larger the operating space required. At the same time, the length of the corneal incision also needs to be longer. The damage to the patient's eyes will further increase the subsequent recovery time and the probability of complications.

[0016] Preferably, the telescopic assembly includes a telescopic sleeve and telescopic rods symmetrically arranged on both sides of the telescopic sleeve; the two groups of telescopic rods are respectively passed through the first rod body and the second rod body; pressing the first rod body and the second rod body will drive the telescopic rod to slide in the direction of the telescopic sleeve, and enable the first rod body and the second rod body to be displaced along the axial direction of the telescopic rod.

[0017] In the above scheme, pressing the outer sides of the first rod and the second rod will cause the first rod and the second rod to move closer to each other along the axis of the telescopic rod. The first rod and the second rod will respectively drive the two groups of telescopic rods to slide along the inner wall of the telescopic sleeve, so that the first rod and the second rod remain relatively stable and will not be misaligned when pressed.

[0018] Preferably, the telescopic sleeve includes two groups of symmetrically arranged telescopic cylinders and arc-shaped rods connecting the two groups of telescopic cylinders at both ends; the two groups of telescopic cylinders are hinged, and pressing the first rod and the second rod will increase the angle between the telescopic cylinders.

[0019] In the above scheme, the telescopic sleeve is divided into two groups of symmetrical and hinged telescopic cylinders. When the first rod body and the second rod body are pressed, they will rotate along the bottom of the first elastic sheet and the second elastic sheet, and the first rod body and the second rod body will drive the telescopic rod to deflect to a certain extent, so that a certain rotation is generated between the two groups of telescopic cylinders, and the telescopic rod is kept sliding along the direction of the telescopic sleeve.

[0020] Preferably, the telescopic rod includes a telescopic inner rod, a threaded outer rod slidably connected to the telescopic inner rod, several groups of limiting teeth evenly distributed in a ring shape on the telescopic inner rod near one end of the telescopic sleeve, an adjusting button fixedly connected to the other end of the telescopic inner rod, several groups of limiting grooves evenly distributed in a ring shape on the threaded outer rod near one end of the telescopic sleeve, and several groups of first teeth evenly distributed in a ring shape on the outer wall of the telescopic inner rod; the limiting teeth are passed through the limiting grooves; the threaded outer rod is threadedly connected to the inner wall of the telescopic cylinder; pressing the first rod body and the second rod body will drive the telescopic inner rod to slide relative to the threaded outer rod, and rotating the adjusting button can drive the threaded outer rod to rotate through the limiting teeth.

[0021] In the above scheme, when the first rod body and the second rod body are pressed, the two sets of telescopic inner rods and the threaded outer rod will slide, ensuring the normal use of the first rod body and the second rod body, and when the adjusting knob is turned, the threaded outer rod will be driven to rotate through the telescopic inner rod and the limit teeth, causing axial displacement between the threaded outer rod and the telescopic sleeve, and the telescopic inner rod is blocked by the threaded outer rod, changing the opening and closing angle between the first rod body and the second rod body when there is no external force.

[0022] It can be seen that during cataract surgery, there will be some more precise cutting links, such as cutting farther away from one end of the incision. At this time, the smaller the distance between the first blade and the second blade, the less dangerous it is, and the smaller the impact on the patient's eyes. When changing the angle between the first rod and the second rod, the rebound force of the first elastic sheet and the second elastic sheet will be increased to better ensure that the doctor can accurately grasp the active angle of the capsular scissors.

[0023] Preferably, the first elastic sheet is provided with a through groove, several groups of evenly distributed second teeth arranged on one side of the through groove, and two groups of limit plates arranged on the side of the blocking plate close to the first blade; the first teeth are meshed with the second teeth, and rotating the adjusting button can cause the second teeth to move axially along the first rod body; the first elastic sheet is slidably connected to the first rod body; the second elastic sheet is slidably connected to the second rod body.

[0024] Preferably, the limiting plates are C-shaped, and the blocking plates are clamped with the two sets of limiting plates.

[0025] In the above scheme, the second teeth are engaged with the first teeth, and when the adjusting knob is twisted, the first teeth will drive the second teeth to slide, and the second teeth will cause the first elastic sheet to slide along the first rod toward the first blade. At the same time, the limiting plate will drive the blocking plate and the rotating adjusting rod to move toward the first blade, and at the same time, one end of the rotating adjusting plate will rotate to cause the first blade and the second blade to move as a whole.

[0026] It can be seen that during cataract surgery, when cutting is performed at the end farthest from the incision, a larger angle of cutting is usually required due to the longer distance, and the longer the length of the device inserted into the eye, the higher the risk. At this time, it is necessary to minimize the angle of movement.

[0027] Preferably, the rotating assembly can be symmetrically arranged on the second rod.

[0028] Preferably, the second elastic piece can be symmetrically arranged with the same structure as the through groove, the second teeth and the limiting plate.

[0029] It can be seen that during cataract surgery, if a circular incision needs to be cut on the anterior capsule, it is necessary to cut both sides of it separately. The angle can be adjusted along the second rod body by using a rotating component symmetrically arranged on the first rod body and a second elastic sheet with the same structure as the through groove, second teeth and limit plate.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. For the two common surgeries using capsular scissors, there is the problem of corneal incision. The present invention achieves the purpose of reducing the surgical operation space by cooperating the first rod and the second rod through the connecting component; in extracapsular cataract extraction, the force angle during operation is changed by the connecting component, thereby reducing the corneal incision required to be opened, so as to facilitate subsequent patient recovery; in phacoemulsification lens extraction, the capsular scissors are allowed to operate at a smaller corneal incision through the connecting component, preventing the conventional capsular scissors from opening and closing up and causing the corneal incision to increase, and preventing the problem that the size and position of the capsular incision are difficult to control with the capsular tear forceps, and can cut the capsule more accurately, and make the size controllable, and the cutting edge smooth, so as to facilitate subsequent patient recovery and surgical operation.

[0032] 2. The rotating assembly of the present invention can increase the flexibility of the shearing angle during surgery. In cataract surgery, especially in phacoemulsification lens removal, since the corneal incision is small, it is inconvenient to perform circular shearing at a distant position. By adjusting the telescopic assembly and the rotating assembly, it is convenient to perform shearing operations on the capsule away from the corneal incision, so that there is no need to increase the corneal opening during surgery, reducing damage to the cornea and intraocular tissues, and improving the safety and effectiveness of the surgery.

[0033] 3. The present invention can adjust the rebound force of the capsular scissors by setting a telescopic component and an elastic sheet, ensuring operability when reducing the shearing angle. In cataract surgery, especially in ultrasonic emulsification lens removal, it is necessary to accurately shear the anterior capsule. By using the telescopic component to simultaneously adjust the shearing angle and the rebound force of the elastic sheet, the doctor can more accurately control the opening and closing angle of the capsular scissors, thereby reducing the corneal incision while ensuring the flexibility and stability of the surgical operation, improving the accuracy of the operation, preventing damage to the intraocular tissue during the operation, and improving the safety and effectiveness of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of the overall structure of the capsular scissors used in cataract surgery;

[0035] Figure 2 The figure is a side view of the overall structure of the capsular scissors used for cataract surgery;

[0036] Figure 3 A schematic diagram of the angle adjustment structure of capsular scissors used in cataract surgery;

[0037] Figure 4 This is a schematic diagram of the shearing state structure of the capsular scissors used in cataract surgery;

[0038] Figure 5 This is an enlarged schematic diagram of the connection relationship of the rotating components of the capsular scissors used in cataract surgery;

[0039] Figure 6 This is an exploded schematic diagram of the telescopic component structure of the capsular scissors used in cataract surgery;

[0040] Figure 7 A schematic cross-sectional view of the telescopic assembly structure of capsular scissors used in cataract surgery;

[0041] Figure 8 Schematic diagram of the shearing process of the capsular scissors used in cataract surgery;

[0042] Figure 9 This is an enlarged schematic diagram of the connection relationship of the rotating components of the capsular scissors used in cataract surgery.

[0043] In the figure: 100, first rod; 200, second rod; 300, first blade; 400, second blade; 500, connecting assembly; 501, first connecting rod; 502, second connecting rod; 503, rotating shaft; 504, axis plate; 505, driving rod; 506, first extrusion plate; 507, second extrusion plate; 600, first elastic sheet; 601, through groove; 602, second tooth; 603, limiting plate; 700, second elastic sheet; 800, rotating assembly; 801 , rotating adjustment plate; 802, rotating adjustment rod; 803, blocking plate; 804, transmission rod; 805, position indicator plate; 806, spring; 807, sliding groove; 808, rotating connecting rod; 900, telescopic assembly; 901, telescopic sleeve; 901a, telescopic cylinder; 901b, arc rod; 902, telescopic rod; 902a, telescopic inner rod; 902b, threaded outer rod; 902c, limit tooth; 902d, adjustment button; 902e, limit groove; 902f, first tooth. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may obtain other implementation methods without violating the connotation of the present invention and without expending creative work. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0046] See also Figures 1 to 9 The present invention provides a capsular scissors for cataract surgery, and the technical solution is as follows:

[0047] The capsule scissors for cataract surgery include a first rod body 100, a second rod body 200, a first blade 300, a second blade 400, a connecting assembly 500, a first elastic sheet 600, a second elastic sheet 700, a rotating assembly 800 and a telescopic assembly 900. The connecting assembly 500 includes a first connecting rod 501, a second connecting rod 502, a rotating shaft 503, an axis plate 504, a driving rod 505, a first squeezing plate 506 and a second squeezing plate 507. The first elastic sheet 600 includes a through groove 601, a second tooth 602 and a limit plate 603. The rotating assembly 800 includes a rotating adjustment plate 801, a rotating adjustment rod 802, a blocking plate 803, a transmission rod 804, a position indicating plate 805, a spring 806, a sliding groove 807 and a rotating connecting rod 808. The telescopic assembly 900 includes a telescopic sleeve 901 and a telescopic rod 902. The telescopic sleeve 901 includes a telescopic cylinder 901a and an arc rod 901b. The telescopic rod 902 includes a telescopic inner rod 902a, a threaded outer rod 902b, a limiting tooth 902c, an adjusting button 902d, a limiting groove 902e and a first tooth 902f.

[0048] As an embodiment of the present invention, refer to Figure 1 or Figure 2 , including a first rod body 100, a second rod body 200, a first blade 300, a second blade 400, a connecting assembly 500, a first elastic piece 600, a second elastic piece 700, a rotating assembly 800 and a telescopic assembly 900; the first blade 300 is connected to the first rod body 100 through the connecting assembly 500, the second blade 400 is connected to the second rod body 200 through the connecting assembly 500, the first blade 300 and the second blade 400 are rotatably connected through the connecting assembly 500, the first elastic piece 600 is sleeved with the second elastic piece 700, the first rod body 100 and the first elastic piece The first and second rods 100 and 200 are connected, and the second rod 200 is connected to the second elastic plate 700. The two ends of the telescopic assembly 900 are respectively connected to the first and second rods 100 and 200. Pressing the outer sides of the first and second rods 100 and 200 in the horizontal direction will cause the connecting assembly 500 to drive the second blade 400 and the first blade 300 to close up and down; the rotating assembly 800 can adjust the angle between the first and second blades 300 and 400 as a whole and the first and second rods 100 and 200 by cooperating with the telescopic assembly 900, thereby facilitating the shearing operation on the anterior capsule away from the side of the corneal opening.

[0049] As an embodiment of the present invention, refer to Figure 3 and Figure 4The connecting assembly 500 includes a first connecting rod 501 fixedly connected to the side of the first blade 300 close to the first rod body 100, a second connecting rod 502 fixedly connected to the side of the second blade 400 close to the second rod body 200, a rotating shaft 503 rotatably connected to the first connecting rod 501 and the second connecting rod 502 respectively, an axis plate 504 fixedly connected to the side of the first connecting rod 501 close to the first rod body 100, a driving rod 505 fixedly connected to the side of the second connecting rod 502 close to the second rod body 200, and a first extrusion plate 506 fixedly connected to the end of the first rod body 100 close to the first blade 300. And the second squeezing plate 507 fixedly connected to the end of the second rod 200 close to the second blade 400, when pressing the outer sides of the first rod 100 and the second rod 200, the first rod 100 and the second rod 200 are constrained by the first elastic sheet 600 and the second elastic sheet 700, and the driving rod 505 is pressed downward away from the end of the second blade 400 through the first squeezing plate 506 and the second squeezing plate 507, so that the second blade 400 and the first blade 300 are closed to achieve shearing, so that the corneal opening can be reduced during extracapsular cataract extraction, and the problems of uneven incision and inconvenience in controlling the size are solved.

[0050] As an embodiment of the present invention, refer to Figure 3 、 Figure 4 、 Figure 5 and Figure 9 The rotating assembly 800 includes a rotating adjustment plate 801 fixedly connected to the axis plate 504, a rotating adjustment rod 802 arranged inside the first rod body 100 and connected to the rotating adjustment plate 801 at one end close to the first rod body 100, a blocking plate 803 fixedly connected to the rotating adjustment rod 802, two sets of transmission rods 804 rotatably connected to both sides of the rotating adjustment rod 802, a position indicating plate 805 rotatably connected to the transmission rod 804, a spring 806 connected at both ends to the position indicating plate 805 and the first rod body 100, and a spring 806 arranged on the rotating adjustment plate 801. The sliding groove 807 on the rotating plate 801 and the rotating connecting rod 808 rotatably connected to the rotating adjustment rod 802; when only one side of the rotating adjustment rod 802 is displaced, the rotating adjustment plate 801 will rotate with the other set of rotating connecting rods 808 as the axis, and drive the first blade 300 and the second blade 400 to rotate as a whole through the connecting assembly 500, thereby changing the angle between the first blade 300 and the second blade 400 as a whole relative to the first rod body 100 and the second rod body 200, thereby increasing the surgical shearing angle to avoid opening a larger corneal incision.

[0051] As an embodiment of the present invention, refer to Figure 6 and Figure 7The telescopic assembly 900 includes a telescopic sleeve 901 and telescopic rods 902 symmetrically arranged on both sides of the telescopic sleeve 901; the two sets of telescopic rods 902 are respectively inserted into the first rod body 100 and the second rod body 200; the telescopic sleeve 901 includes two sets of symmetrically arranged telescopic cylinders 901a and arc-shaped rods 901b respectively connected to the two sets of telescopic cylinders 901a at both ends; the two sets of telescopic cylinders 901a are hinged, and pressing the first rod body 100 and the second rod body 200 will increase the angle formed between the telescopic cylinders 901a; the telescopic rod 902 includes a telescopic inner rod 902a and a threaded outer rod 902 slidingly connected to the telescopic inner rod 902a. 2b, several groups of limiting teeth 902c evenly distributed in an annular shape with the telescopic inner rod 902a near one end of the telescopic sleeve 901, an adjusting button 902d fixedly connected to the other end of the telescopic inner rod 902a, several groups of limiting grooves 902e evenly distributed in an annular shape on the threaded outer rod 902b near one end of the telescopic sleeve 901, and several groups of first teeth 902f evenly distributed in an annular shape with the outer wall of the telescopic inner rod 902a; the limiting teeth 902c are passed through the limiting grooves 902e; the threaded outer rod 902b is threadedly connected to the inner wall of the telescopic cylinder 901a; the telescopic sleeve 901 is divided into two groups of symmetrical and hinged telescopic cylinders 901a, When the first rod body 100 and the second rod body 200 are pressed, they will rotate along the bottom of the first elastic piece 600 and the second elastic piece 700, and the first rod body 100 and the second rod body 200 will drive the telescopic rod 902 to deflect to a certain extent, so that a certain rotation occurs between the two sets of telescopic cylinders 901a, and the telescopic rod 902 is kept sliding along the direction of the telescopic sleeve 901. When the first rod body 100 and the second rod body 200 are pressed, the two sets of telescopic inner rods 902a and the threaded outer rod 902b are driven to slide, ensuring the normal use of the first rod body 100 and the second rod body 200, and when the adjusting knob 902d is turned, the telescopic inner rod 902a and the limiting tooth 902c drive the threaded outer rod 902b to rotate, causing axial displacement between the threaded outer rod 902b and the telescopic sleeve 901, and blocking the telescopic inner rod 902a through the threaded outer rod 902b, changing the opening and closing angle between the first rod body 100 and the second rod body 200 when there is no external force, so that the first rod body 100 and the second rod body 200 remain relatively stable and will not be dislocated when pressed, and when changing the angle between the first rod body 100 and the second rod body 200, the resilience of the first elastic sheet 600 and the second elastic sheet 700 is increased, so as to better ensure that the doctor can accurately grasp the active angle of the capsular scissors.

[0052] As an embodiment of the present invention, refer to Figure 3 and Figure 9The first elastic sheet 600 is provided with a through slot 601, a plurality of groups of evenly distributed second teeth 602 arranged on one side of the through slot 601, and two groups of limit plates 603 arranged on the side of the blocking plate 803 close to the first blade 300; the first teeth 902f are meshed with the second teeth 602, and the second teeth 602 can be displaced axially along the first rod 100 by rotating the adjusting knob 902d; the first elastic sheet 600 is slidably connected to the first rod 100; the second elastic sheet 700 is slidably connected to the second rod 200, the limit plate 603 is C-shaped, and the blocking plate 803 is engaged with the two groups of limit plates 603. 2f meshing connection, when twisting the adjusting knob 902d, the first tooth 902f will drive the second tooth 602 to slide, and the second tooth 602 will cause the first elastic piece 600 to slide along the first rod body 100 toward the first blade 300. At the same time, the blocking plate 803 and the rotating adjusting rod 802 will be driven to move toward the first blade 300 through the limiting plate 603. At the same time, one end of the rotating adjusting plate 801 is rotated to cause the first blade 300 and the second blade 400 to move as a whole. Usually, due to the longer distance, a larger angle of rotation is required for shearing, and since the length of the device inserted into the eye is longer, the degree of danger is higher, and it is necessary to minimize the active angle at this time.

[0053] As an embodiment of the present invention, refer to Figure 3 、 Figure 4 、 Figure 5 and Figure 9 The rotating assembly 800 can be symmetrically arranged on the second rod body 200, and the second elastic sheet 700 can be symmetrically arranged with the same structure as the through groove 601, the second teeth 602 and the limiting plate 603. If a circular incision is required on the anterior capsule membrane, it is necessary to cut both sides thereof separately. The angle can be adjusted along the second rod body 200 by symmetrically arranging the rotating assembly 800 on the first rod body 100 and adopting the second elastic sheet 700 with the same structure as the through groove 601, the second teeth 602 and the limiting plate 603.

[0054] It should be noted that the first connecting rod 501 and the second connecting rod 502 are connected by a rotating shaft 503, and a torsion spring is provided at the rotating shaft 503 by conventional means to enable the second connecting rod 502 to rotate, so that the first blade 300 and the second blade 400 remain open and closed in the absence of external force. The first elastic sheet 600 and the second elastic sheet 700 have the same structure except for the position of mutual connection. The first blade 300 and the second blade 400 have two specifications: straight tip and curved tip, which can be selected according to actual operation. The use of two hands in coordination during surgery can improve surgical stability.

[0055] Working principle: The capsular scissors are inserted from the corneal incision along the direction of the first blade 300 and the second blade 400. The capsular forceps can be inserted through another corneal incision to clamp the center of the anterior capsule. Then the capsular scissors are operated to cut along the anterior capsule near the edge. First, the semicircle close to the incision is cut. Then, by adjusting the overall angle of the first blade 300 and the second blade 400, the semicircle away from the incision is cut. However, no cutting is performed during the cutting, and a small amount of residue is left. After the cutting is completed, the residual part can be torn off with the capsular forceps and the capsule can be clamped out as a whole.

[0056] Specifically, during phacoemulsification lens removal, two sets of incisions are first made on the cornea, with the angle spacing between the two sets of incisions being between 90° and 120°. Viscoelastic is then added through the incisions to ensure the operating space for the surgery and prevent unnecessary damage to the eye. Capsulotomy forceps are inserted through the corneal incision to clamp the center of the anterior capsule, and the capsule scissors are inserted from the corneal incision along the direction of the first blade 300 and the second blade 400. When inserted, the first blade 300 is kept above the second blade 400. Since the first blade 300 will not remain stationary during shearing, damage to the cornea can be prevented during shearing. Capsulotomy forceps are inserted through another corneal incision to clamp the center of the anterior capsule, and the first blade 300 is pressed. When the rod body 100 and the second rod body 200 are on both sides, the two sets of telescopic inner rods 902a and the threaded outer rod 902b will be driven to slide, and the first rod body 100 and the second rod body 200 will not be misaligned. The first rod body 100 and the second rod body 200 are constrained by the first elastic sheet 600 and the second elastic sheet 700 to approach each other, and the first extrusion plate 506 and the second extrusion plate 507 press the driving rod 505 away from one end of the second blade 400, so that the second blade 400 and the first blade 300 are closed to achieve shearing, thereby completing the shearing of the semicircle near the incision position, and then turning the adjusting button 902d on one side, through the telescopic inner rod 902a and the limit tooth 902c The threaded outer rod 902b is driven to rotate, causing axial displacement between the threaded outer rod 902b and the telescopic sleeve 901, and the threaded outer rod 902b blocks the telescopic inner rod 902a, changing the opening and closing angle between the first rod body 100 and the second rod body 200 when there is no external force, so as to reduce the angle between the first blade 300 and the second blade 400, and prevent damage to the eye when inserting a longer capsular scissors. At the same time, when the adjusting knob 902d is turned, the second tooth 602 is engaged with the first tooth 902f. When the adjusting knob 902d is twisted, the second tooth 602 is driven to slide through the first tooth 902f, and the first elastic piece 600 is caused to slide through the second tooth 602. It slides along the first rod body 100 toward the first blade 300, and at the same time, it drives the blocking plate 803 and the rotation adjustment rod 802 to move toward the first blade 300 through the limit plate 603. At the same time, one end of the rotation adjustment plate 801 rotates to cause the first blade 300 and the second blade 400 to move as a whole. The indicating plate 805 squeezes the spring 806 under the pull of the transmission rod 804 and slides to the inside of the first rod body 100 to indicate the degree of angle adjustment and the adjustable angle range. Then, the semicircle away from the incision position can be sheared. No shearing is performed during shearing, and a small amount of residue is left. After the shearing is completed, the residual part can be torn off by the capsulotomy forceps and the capsule membrane can be clamped out as a whole.

[0057] The above embodiments are only used to illustrate some examples of the implementation of the technical solution of the present invention and are not intended to limit the implementation methods. The present invention can be understood in more detail with reference to the embodiments. Those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A capsular scissors for cataract surgery, characterized by: The invention comprises a first rod body (100), a second rod body (200), a first blade (300), a second blade (400), a connecting assembly (500), a first elastic sheet (600), a second elastic sheet (700), a rotating assembly (800) and a telescopic assembly (900); The first blade (300) is connected to the first rod (100) through the connecting assembly (500), the second blade (400) is connected to the second rod (200) through the connecting assembly (500), the first blade (300) and the second blade (400) are rotatably connected through the connecting assembly (500), the first elastic sheet (600) is sleeved with the second elastic sheet (700), the first rod (100) is connected to the first elastic sheet (600), the second rod (200) is connected to the The second elastic piece (700) is connected, and the two ends of the telescopic component (900) are respectively connected to the first rod body (100) and the second rod body (200). Pressing the outer sides of the first rod body (100) and the second rod body (200) in the horizontal direction will cause the connecting component (500) to drive the second blade (400) and the first blade (300) to close up and down; the rotating component (800) can adjust the angle between the first blade (300) and the second blade (400) and the first rod body (100) and the second rod body (200).

2. The capsular scissors for cataract surgery according to claim 1, characterized in that: The connecting assembly (500) comprises a first connecting rod (501) fixedly connected to the side of the first blade (300) close to the first rod body (100), a second connecting rod (502) fixedly connected to the side of the second blade (400) close to the second rod body (200), a rotating shaft (503) rotatably connected to the first connecting rod (501) and the second connecting rod (502), an axis plate (504) fixedly connected to the side of the first connecting rod (501) close to the first rod body (100), a driving rod (505) fixedly connected to the side of the second connecting rod (502) close to the second rod body (200), a first extrusion plate (506) fixedly connected to one end of the first rod body (100) close to the first blade (300), and a second extrusion plate (507) fixedly connected to one end of the second rod body (200) close to the second blade (400).

3. The capsular scissors for cataract surgery according to claim 2, characterized in that: The rotating assembly (800) comprises a rotating adjustment plate (801) fixedly connected to the axis plate (504), a rotating adjustment rod (802) arranged inside the first rod body (100) and connected to one end of the rotating adjustment plate (801) close to the first rod body (100), a blocking plate (803) fixedly connected to the rotating adjustment rod (802), two groups of transmission rods (804) rotatably connected to both sides of the rotating adjustment rod (802), a position indicating plate (805) rotatably connected to the transmission rod (804), a spring (806) whose two ends are respectively connected to the position indicating plate (805) and the first rod body (100), a sliding groove (807) arranged on the rotating adjustment plate (801), and a rotating connecting rod (808) rotatably connected to the rotating adjustment rod (802); the displacement of the rotating adjustment rod (802) along the axis of the first rod body (100) will drive the displacement of one side of the rotating adjustment plate (801).

4. The capsular scissors for cataract surgery according to claim 3, characterized in that: The telescopic assembly (900) comprises a telescopic sleeve (901) and telescopic rods (902) symmetrically arranged on both sides of the telescopic sleeve (901); two groups of telescopic rods (902) are respectively inserted into the first rod body (100) and the second rod body (200); pressing the first rod body (100) and the second rod body (200) will drive the telescopic rods (902) to slide toward the telescopic sleeve (901), and enable the first rod body (100) and the second rod body (200) to be displaced axially along the telescopic rods (902).

5. The capsular scissors for cataract surgery according to claim 4, characterized in that: The telescopic sleeve (901) comprises two groups of symmetrically arranged telescopic cylinders (901a) and arc-shaped rods (901b) with two ends respectively connected to the two groups of telescopic cylinders (901a); the two groups of telescopic cylinders (901a) are hinged, and pressing the first rod (100) and the second rod (200) will increase the angle formed between the telescopic cylinders (901a).

6. The capsular scissors for cataract surgery according to claim 5, characterized in that: The telescopic rod (902) comprises a telescopic inner rod (902a), a threaded outer rod (902b) slidably connected to the telescopic inner rod (902a), a plurality of groups of limiting teeth (902c) evenly distributed in a ring shape on one end of the telescopic inner rod (902a) close to the telescopic sleeve (901), an adjusting button (902d) fixedly connected to the other end of the telescopic inner rod (902a), a plurality of groups of limiting grooves (902e) evenly distributed in a ring shape on one end of the threaded outer rod (902b) close to the telescopic sleeve (901), and a plurality of adjusting buttons (902d) fixedly connected to the other end of the telescopic inner rod (902a). The outer wall of the inner rod (902a) is provided with a plurality of groups of first teeth (902f) uniformly distributed in a circular shape; the limiting teeth (902c) are arranged in the limiting groove (902e); the threaded outer rod (902b) is threadedly connected to the inner wall of the telescopic cylinder (901a); pressing the first rod (100) and the second rod (200) will drive the telescopic inner rod (902a) to slide relative to the threaded outer rod (902b), and rotating the adjusting button (902d) can drive the threaded outer rod (902b) to rotate through the limiting teeth (902c).

7. The capsular scissors for cataract surgery according to any one of claim 6, characterized in that: The first elastic sheet (600) is provided with a through slot (601), a plurality of groups of evenly distributed second teeth (602) arranged on one side of the through slot (601), and two groups of limit plates (603) arranged on the side of the blocking plate (803) close to the first blade (300); the first teeth (902f) are meshed and connected with the second teeth (602), and the second teeth (602) can be displaced axially along the first rod (100) by rotating the adjusting button (902d); the first elastic sheet (600) is slidably connected to the first rod (100); and the second elastic sheet (700) is slidably connected to the second rod (200).

8. The capsular scissors for cataract surgery according to claim 7, characterized in that: The limiting plates (603) are C-shaped, and the blocking plates (803) are engaged with two groups of the limiting plates (603).

9. The capsular scissors for cataract surgery according to claim 7 or 8, characterized in that: The rotating assembly (800) can be symmetrically arranged on the second rod (200).

10. The capsular scissors for cataract surgery according to claim 9, characterized in that: The second elastic piece (700) can be symmetrically arranged with the same structure as the through slot (601), the second teeth (602) and the limiting plate (603).

Images