CN221672280U - Artificial crystal cutting knife - Google Patents

Abstract

The utility model discloses an artificial crystal cutting knife, which relates to the technical field of medical appliances, and comprises a handle, a clamping arm, a cutting knife, a power key and a knife head rod, wherein a silica gel handle sleeve is arranged on the outer side of the handle, two cavities are symmetrically arranged in the handle, connecting rods are arranged in the two cavities, the arc clamping arm is more attached to the surface of an artificial crystal, the artificial crystal is not only easy to enter an eye through a notch, but also easy to be fixed in the cutting process, the operation of being convenient for, in sending into the eye with the arm clamp through little incision, control key, locating part and the tiny sawtooth antiskid structure of front end can effectively increase two upper and lower arm clamps the snap force to intraocular lens, be convenient for take out intraocular lens through little incision in order to reduce the incidence of complication, improve the operation success rate, the cutter can realize quick accurate cutting intraocular lens simultaneously, avoids damaging tissues such as corneal endothelium, iris, improves the security.

Description

Artificial crystal cutting knife

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an artificial lens cutting knife.

Background Art

Currently, the main treatment for cataracts is phacoemulsification combined with intraocular lens implantation. The cloudy lens is removed through phacoemulsification, and a transparent intraocular lens is implanted to improve visual function. The earliest concept of intraocular lenses can be traced back to the early 20th century. With the development of medicine and materials science, the concept has gradually been realized. In 1949, the world's first intraocular lens made of polymethyl methacrylate (PMMA) was implanted in the patient's eye for the treatment of cataracts. With the advancement of materials science, the design and manufacture of intraocular lenses have become more complex and diversified. More materials are available to meet the needs of different patients, such as silicone and acrylic. Their biocompatibility, optical properties and safety are also increasing.

Currently, the incision for conventional cataract surgery is 2.2 to 3.0 mm. The most widely used foldable intraocular lens, which is implanted through a tiny incision, is usually 5.5 to 7.0 mm in diameter. After being pushed into the eye by an injector, the intraocular lens automatically unfolds and enters the capsular bag. When certain abnormal situations occur, such as damage to the intraocular lens or errors in the degree, the intraocular lens implanted in the eye needs to be removed and a new one implanted. The lens is often cut into 2-3 pieces through a large incision and then removed. There are many surgical risks in the process.

In the prior art, there is a pair of scissors specifically for intraocular lenses, such as the Chinese patent publication number CN207101421U, which mainly includes a left piece and a right piece hinged to each other, each of which includes a blade, a handle and a spring sheet, the blade head is a curved blade head bent in the opening and closing direction of the scissors, and the blade tip of the blade head is a 1/4 circle, and the blade tips of the left and right blade heads are combined to form a semicircle, which is used to cut the intraocular intraocular lens into pieces, so as to facilitate the removal of the intraocular lens with a smaller incision.

At present, the instruments that can be used to cut artificial lenses in clinical practice mainly include artificial lens scissors and ophthalmic capsular scissors. However, when operating the artificial lens scissors, the corneal incision often needs to be enlarged due to the bulk of the instrument, and the tip is sharp, which is easy to damage the corneal endothelium, iris and other tissues, and the scissors have no anti-slip design, so the practicality is low; when operating the ophthalmic capsular scissors, the instrument is thin and weak, and it is difficult to cut the artificial lens. Excessive force can easily cause the artificial lens to twist suddenly and damage the tissue, resulting in the lack of practical value of the instrument in the case of removing high-hardness artificial lenses. In view of the above problems, an artificial lens cutting knife is proposed.

Utility Model Content

The utility model aims to solve the problems in the prior art that in current clinical practice, when artificial lens scissors are used, the instruments are bulky and often require the corneal incision to be enlarged, and the tip is sharp, which is easy to damage the corneal endothelium, iris and other tissues; and when ophthalmic capsular scissors are used, the instruments are slender and insufficient in strength, making it difficult to cut the artificial lens, and excessive force can easily cause the artificial lens to twist suddenly and damage the tissue. An artificial lens cutting knife is proposed.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an artificial lens cutting knife, comprising a handle, a clamping arm, a cutting knife, a power button and a blade rod, a silicone handle cover is provided on the outside of the handle, and two cavities are symmetrically provided inside the handle, connecting rods are provided inside the two cavities, one end of the clamping arm is fixedly connected to one end of the connecting rod, and the other end of the clamping arm is provided with an anti-slip structure, a trapezoidal bin is provided at one end of the handle, and the other end of the handle is fixedly connected to one end of the power button, one end of the blade rod is fixedly connected to one end of the cutting knife, and a motor is provided inside the handle.

Preferably, the outer wall of the handle is symmetrically and movably connected to two control keys, and a plurality of limit members are evenly arranged at one end of the two control keys.

Preferably, the cutting knife is in the shape of a circular sheet, and the anti-slip structure is in the shape of a sawtooth.

Preferably, the clamping arm, the cutting blade and the connecting rod are all made of martensitic stainless steel.

Preferably, the clamping arm has a length of 8 mm and a width of 2 mm, the cutting knife has a diameter of 1.5 mm, and the handle has a length of 80 mm.

Compared with the prior art, the advantages and positive effects of the utility model are:

1. In the utility model, by arranging the clamping arm, the handle and the connecting rod, when the surgeon needs to remove the artificial lens, the anti-skid layer of the silicone handle sleeve increases the friction force to prevent the hand from slipping. The surgeon can operate the control key and the clamping arm with one hand. The arc-shaped clamping arm fits the surface of the artificial lens more closely, which is not only conducive to entering the eye through the incision, but also conducive to fixing the artificial lens during the cutting process, and is easy to operate. The clamping arm is sent into the eye through a small incision of 2.4 mm. The control key, the limiter and the front fine serrated anti-skid structure can effectively increase the bite force of the upper and lower clamping arms on the artificial lens, thereby avoiding the slippage of the artificial lens during cutting and avoiding the situation that the original artificial lens is cut too thick and needs to enlarge the corneal incision. It is convenient to remove the artificial lens through a small incision to reduce the incidence of complications and improve the success rate of the operation.

2. In the utility model, a cutting knife, a knife head rod and a motor are provided, and the vertical advancement of the cutting knife is controlled by the power button, so that the artificial lens can be cut quickly and accurately, avoiding the situation that the original artificial lens is not thin and strong enough, resulting in a long operation time and twisting of the artificial lens. During the complete cutting process, the cutting knife is protected by clamping arms on the upper and lower sides to avoid damage to the corneal endothelium, iris and other tissues. After the cutting is completed, the cutting head can be retracted into the handle to improve safety. After the operation, the cutting head, clamping arm and silicone handle cover can be disassembled separately for disinfection and sterilization, thereby improving the practicality of the artificial lens cutting knife.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the three-dimensional structure of an artificial lens cutting knife proposed by the utility model;

FIG2 is a schematic structural diagram of a connecting rod of an artificial lens cutting knife proposed by the present invention;

FIG3 is a top view of an artificial lens cutting knife provided by the present invention;

FIG4 is a schematic diagram of the interior front view of an artificial lens cutting knife proposed by the present invention;

FIG5 is a plan view of a silicone handle sleeve of an intraocular lens cutting knife provided by the present invention;

FIG6 is a side view of an artificial lens cutting knife in a resting position according to the present invention;

FIG7 is a side view of a working position of an artificial lens cutting knife proposed by the present invention;

FIG8 is a side view of an artificial lens cutting knife proposed by the present invention.

Legend: 1. Handle; 2. Control key; 3. Clamping arm; 4. Cutting knife; 5. Anti-slip structure; 6. Trapezoidal compartment; 7. Power button; 8. Cutter head rod; 9. Motor; 10. Cavity; 11. Silicone handle cover; 12. Limiting piece; 13. Connecting rod.

DETAILED DESCRIPTION

In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

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 than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

Embodiment 1

As shown in Figures 1-8, the utility model provides an artificial lens cutting knife, including a handle 1, a clamping arm 3, a cutting knife 4, a power button 7 and a blade rod 8. A silicone handle cover 11 is provided on the outer side of the handle 1, and two cavities 10 are symmetrically provided inside the handle 1, and connecting rods 13 are provided inside the two cavities 10. One end of the clamping arm 3 is fixedly connected to one end of the connecting rod 13, and the other end of the clamping arm 3 is provided with an anti-slip structure 5. A trapezoidal bin 6 is provided at one end of the handle 1, and the other end of the handle 1 is fixedly connected to one end of the power button 7, one end of the blade rod 8 is fixedly connected to one end of the cutting knife 4, a motor 9 is provided inside the handle 1, and the outer wall of the handle 1 is symmetrically and movably connected to two control keys 2, and one end of the two control keys 2 is evenly provided with a plurality of limit members 12.

The following is a detailed description of the specific settings and functions of this embodiment: a silicone handle cover 11 is provided on the surface of the handle 1, and anti-slip patterns are provided on the outside of the silicone handle cover 11, and a surrounding treatment is performed at the control key 2 to ensure the principle of sterility; the upper and lower clamping arms 3 both include a serrated anti-slip structure 5 at the front end, and the anti-slip structure 5 can limit the movement of the artificial lens, and the upper and lower control keys 2 are respectively provided with limit members 12, and have three adjustable gears; the clamping arm 3 and the cutting knife 4 are used in combination for operation, and the clamping range of the clamping arm 3 can be controlled by moving the control key 2 up and down. The limit member 12 can ensure that the two clamping arms 3 are not loose during the clamping process, and the power button 7 controls the switch of the motor 9 and the extension and retraction of the knife head rod 8, thereby determining the cutting direction of the cutting knife 4.

Embodiment 2

As shown in Figure 4, the cutting knife 4 is a circular sheet, the anti-slip structure 5 is serrated, the clamping arm 3, the cutting knife 4 and the connecting rod 13 are all made of martensitic stainless steel, the length of the clamping arm 3 is 8mm, and the width is 2mm, the diameter of the cutting knife 4 is 1.5mm, and the length of the handle 1 is 80mm.

The effect achieved by the entire embodiment is that, by setting an arc-shaped clamping arm 3 that fits the surface of the artificial lens, it is not only convenient for entering the eye through the incision, but also convenient for fixing the artificial lens during the cutting process, which is easy to operate. The cutting knife 4 moves between the two clamping arms 3, which can reduce the risk of damage to the corneal endothelium, iris and other tissues by the cutting knife head 4 during the operation.

The use method and working principle of the device: Based on the perspectives of ophthalmic precision surgery and mechanical dynamics, a non-slip, electric, and reusable technical solution principle is formulated to provide an ophthalmic intraocular lens cutting knife, which mainly includes: two upper and lower clamping arms 3, a cutting knife 4, a handle 1, two connecting rods 13, and an internal circuit system. The clamping arm 3, the cutting knife 4, and the connecting rod 13 are all made of martensitic stainless steel. The clamping arm 3 is 8 mm long and 2 mm wide. The cutting knife 4 has a diameter of 1.5 mm and the handle 1 is 80 mm long.

The upper and lower clamping arms 3 are connected to one end of the handle 1 through two connecting rods 13. The upper and lower clamping arms 3 both include a serrated anti-skid structure 5 at the front end, which can limit the movement of the artificial lens. The upper and lower control keys 2 are respectively provided with limiters 12, and are adjustable in three gears. The surface of the handle 1 is provided with a silicone handle cover 11, and the outer side of the silicone handle cover 11 is provided with anti-skid patterns, and the control keys 2 are surrounded to ensure the principle of sterility; the handle 1 can accommodate a connecting rod 13 (installed in the cavity 10), a cutter head rod 8 (electrically retractable structure), a trapezoidal bin 6, and a cutter head motor 9 and power circuit, the cutting knife 4 is connected to one end of the handle 1 through a retractable knife head rod 8, the clamping arms 3 are all arc-shaped, the cutting knife 4 is a circular sheet, and can be retracted into the trapezoidal bin 6 at one end of the handle 1; when cutting the artificial lens, the clamping arm 3 and the cutting knife 4 are used together for operation, the clamping range of the clamping arm 3 can be controlled by moving the control key 2 up and down, and the two clamping arms 3 can be ensured not to loosen during the clamping process by the limiter 12, the motor 9 is powered by a 3v battery, and the power button 7 controls the switch of the motor 9 and the extension and retraction of the knife head rod 8, thereby determining the cutting direction of the cutting knife 4;

The method of using the intraocular lens cutting knife is as follows: first, install the silicone handle sleeve 11 on the handle 1, hold the installed handle 1, and extend the clamping arm 3 into the eye from the corneal limbus incision; put the intraocular lens to be removed after cutting into the opened intraocular lens clamping arm 3; press the control key 2 of the clamping arm 3 on the surface of the handle 1, and use the limiter 12 to fix the clamping arm 3; long press the power button 7 for three seconds to start the rotation of the cutting knife 4 (short press once can make the cutting knife 4 move forward to complete the intraocular lens cutting, short press twice in a row to pause, short press three times in a row to retreat, and return the cutting knife 4 to the trapezoidal bin 6); release the limiter 12, release the up and down control keys 2 of the clamping arm 3, open the clamping arm 3, adjust the intraocular lens clamping position and then perform the next cutting; after the cutting is completed, hold the handle 1 tightly and withdraw the intraocular lens cutting knife from the incision, and then take out the intraocular lens fragments;

The intraocular lens cutting knife is provided with an arc-shaped clamping arm 3 that fits the surface of the intraocular lens, which is not only convenient for entering the eye through the incision, but also convenient for fixing the intraocular lens during the cutting process, and is easy to operate. The cutting knife 4 moves between the two clamping arms 3, and can reduce the risk of damage to the corneal endothelium, iris and other tissues by the blade head of the cutting knife 4 during the operation; it is convenient to remove the intraocular lens through a small incision to reduce the incidence of complications and improve the success rate of the operation, making it suitable for high-hardness intraocular lens removal or replacement surgery, and improving safety, stability and ease of operation.

The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims (5)

1. An artificial lens cutting knife, characterized in that it comprises a handle (1), a clamping arm (3), a cutting knife (4), a power button (7) and a blade rod (8), the outer side of the handle (1) is provided with a silicone handle sleeve (11), and the interior of the handle (1) is symmetrically provided with two cavities (10), the interiors of the two cavities (10) are provided with connecting rods (13), one end of the clamping arm (3) is fixedly connected to one end of the connecting rod (13), and the other end of the clamping arm (3) is provided with an anti-slip structure (5), one end of the handle (1) is provided with a trapezoidal bin (6), and the other end of the handle (1) is fixedly connected to one end of the power button (7), one end of the blade rod (8) is fixedly connected to one end of the cutting knife (4), and the interior of the handle (1) is provided with a motor (9). 2. An artificial lens cutting knife according to claim 1, characterized in that: the outer wall of the handle (1) is symmetrically and movably connected with two control keys (2), and one end of the two control keys (2) is evenly provided with a plurality of limit members (12). 3. An artificial lens cutting knife according to claim 1, characterized in that: the cutting knife (4) is in the shape of a circular sheet, and the anti-slip structure (5) is in the shape of a sawtooth. 4. An artificial crystal cutting knife according to claim 1, characterized in that the clamping arm (3), the cutting knife (4) and the connecting rod (13) are all made of martensitic stainless steel. 5. An intraocular lens cutting knife according to claim 1, characterized in that: the length of the clamping arm (3) is 8 mm and the width is 2 mm, the diameter of the cutting knife (4) is 1.5 mm, and the length of the handle (1) is 80 mm.