A reusable rotary intraocular lens injection system

Abstract

The present invention discloses a reusable rotary intraocular lens injection system, including a metal injector and a straight introduction head. The metal injector consists of a main body, an injection rod, a rotating handle, a decorative cap, a top screw and a retaining spring. The front end of the main body is snap-connected to the straight introduction head, an intraocular lens is placed in an inverted S shape in the straight introduction head, the tail end of the main body is threadedly connected to the rotating handle, the tail end of the rotating handle is installed with a decorative cap, a guide hole is provided inside the main body, and the injection rod passes through the guide hole. The present invention is easy to operate, saves time and effort, has a uniform injection speed, high operational stability, and causes little damage to the patient. The metal injector is reusable, which is beneficial to reducing costs. The intraocular lens is implanted into the eye through the straight introduction head, avoiding damage to the lens caused by artificial lens installation. The lens does not need to be pre-folded when loaded into the straight introduction head, and the operation is simple. It has broad application prospects and is conducive to popularization and application.

Description

Technical Field

[0001] The present invention relates to the technical field of artificial lenses, and in particular to a reusable rotary artificial lens injection system. Background Art

[0002] Currently, intraocular lenses are the most effective method for correcting aphakic refraction. An intraocular lens injection system is a specialized surgical instrument used to implant a foldable soft intraocular lens into the human eye. It can be implanted through a small incision of less than 3 mm. The intraocular lens injection system consists of an insert head component and an intraocular lens injector. The intraocular lens injector is composed of an injector body and an injection drive mechanism component, and its function is to provide the driving force for injecting the intraocular lens during the intraocular lens implantation process. However, existing intraocular lens injectors require the operator to push the relevant components of the injection drive mechanism forward to complete the intraocular lens implantation. This thrust is large, inconvenient to use, and the operator's hand is prone to shaking, making the operation relatively unstable. Furthermore, the material is usually injection-molded plastic, which is only for disposable use and is relatively expensive. In addition, the foldable insert head requires higher operating skills, the intraocular lens is easily damaged when folded, and the implantation process is complicated. Therefore, there is an urgent need to develop a reusable rotary intraocular lens injection system to solve the above technical problems.

[0003] In view of this, the present invention is proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide a reusable rotary intraocular lens injection system, which is easy to operate, saves time and effort, has a uniform injection speed, high operational stability, and causes little damage to the patient. The metal injector is reusable, which is conducive to reducing costs. The intraocular lens is implanted into the eye through a straight introduction head, avoiding damage to the lens caused by artificial lens installation. The lens does not need to be pre-folded when installed into the straight introduction head, and the operation is simple. It has broad application prospects and is conducive to promotion and application.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a reusable rotary intraocular lens injection system, including a metal injector and a straight introduction head, the metal injector is composed of a main body, an injection rod, a rotating handle, a decorative cap, a top screw and a retaining spring, the front end of the main body is snap-connected with the straight introduction head, an intraocular lens is placed in an S-shaped manner in the straight introduction head, the tail end of the main body is threadedly connected to the rotating handle, the tail end of the rotating handle is installed with a decorative cap, a guide hole is provided inside the main body, the injection rod passes through the guide hole, the front and rear ends of the guide hole are respectively provided with a backward guide and a forward guide, the front A push rod limit is provided in front of the shift guide, a push rod head is provided at the front end of the push rod, a rotating shaft is provided at the tail end, a retaining ring groove is provided at the end of the rotating shaft, the retaining ring is installed in the retaining ring groove, an anti-rotation stop is provided at the middle part of the push rod, the anti-rotation stop is cooperated with the push rod limit to prevent rotation and guide the push rod to move back and forth, a rearward limit is provided at the front part of the anti-rotation stop, the rearward limit and the rearward guide limit prevent the push rod from being pulled out of the main body, a top screw groove is provided at the tail end of the anti-rotation stop, the top screw is installed in the top screw groove, the top screw and the forward guide limit prevent the push rod from pushing too long and damaging the human eye. The interior of the rotating handle is provided with an injection rod rotating groove that matches the rotating shaft, and the front of the injection rod rotating groove is provided with an injection rod moving hole. During installation, the rotating handle is inserted from the tail end of the injection rod, and the injection rod is moved into the injection rod moving hole, allowing the retaining spring groove to leak out, and the retaining spring is installed. After that, the rotating handle is retracted, revealing the ejector screw groove, and the ejector screw is installed. The rotating handle is moved forward to a stop position to prevent it from falling off, making injection convenient.

[0006] Preferably, a straight introduction head slot is provided at the front end of the main body, and a card block is provided at the tail end of the straight introduction head. The card block is snap-fitted and connected to the straight introduction head slot, which not only allows it to be firmly snapped in place during injection to prevent it from falling off, but also facilitates disassembly and assembly, and is simple to operate.

[0007] Preferably, the injection head is an easily foldable lens injection head, which cooperates with a straight introduction head to fold and inject the intraocular lens.

[0008] Preferably, a light-transmitting window is provided at the front end of the main body.

[0009] Preferably, the tail end of the rotating handle is provided with a decorative internal thread, and the outer side of the decorative cap is provided with a decorative external thread, and the decorative internal thread is engaged with the decorative external thread by rotating the screwdriver slot with a screwdriver.

[0010] Preferably, a rotating cavity is provided on the inner side of the decorative cap, and the injection rod can rotate freely in the rotating cavity.

[0011] Preferably, the outside of the rotating handle is provided with an external thread, and the tail end of the main body is provided with an internal thread, and the internal thread is engaged with the external thread, and the injection rod is driven to move forward and backward by rotating the rotating handle.

[0012] The present invention provides a reusable rotary intraocular lens injection system, which has the following beneficial effects.

[0013] 1. During use, the operator only needs to hold the metal pusher with one hand and rotate the rotary handle with the other hand to complete the intraocular lens implantation. The operation is convenient, time-saving and labor-saving, the push injection speed is uniform, the operation stability is high, and the damage to the patient is small. In addition, the lens does not need to be pre-folded when it is loaded into the straight introduction head, and the operation is simple.

[0014] 2. The present invention adopts a pre-installed type, which can be used for both hydrophilic and hydrophobic intraocular lenses. The intraocular lens is implanted into the eye through a straight introduction head, avoiding damage to the lens caused by artificial lens installation.

[0015] 3. The injector of the present invention is made of metal and is reusable. Compared with disposable plastic injectors, it is cheaper and significantly reduces the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a reusable rotary intraocular lens injection system provided by the present invention;

[0017] Figure 2 A cross-sectional view of a reusable rotary intraocular lens injection system provided by the present invention;

[0018] Figure 3 An exploded view of a reusable rotary intraocular lens injection system provided by the present invention;

[0019] Figure 4 A schematic diagram of the main structure of a reusable rotary intraocular lens injection system provided by the present invention;

[0020] Figure 5 A schematic diagram of the structure of an injection rod of a reusable rotary intraocular lens injection system provided by the present invention;

[0021] Figure 6 A schematic diagram of the structure of a rotary handle of a reusable rotary intraocular lens injection system provided by the present invention;

[0022] Figure 7 A schematic diagram of the decorative cap structure of a reusable rotary intraocular lens injection system provided by the present invention;

[0023] Figure 8This is a schematic structural diagram of a straight introduction head of a reusable rotary intraocular lens injection system provided by the present invention.

[0024] In the picture:

[0025] 1. Main body 101. Straight introduction head slot 102. Light-transmitting window 103. Internal thread 104. Forward guide 105. Injection rod limit 106. Guide hole 107. Backward guide 2. Injection rod 201. Anti-rotation stop 202. Backward limit 203. Top screw slot 204. Rotation axis 205. Circlip slot 206. Injection head 3. Rotating handle 301. Injection rod rotation slot 302. External thread 303. Injection rod movement hole 304. Decorative internal thread 4. Decorative cap 401. Decorative external thread 402. Rotation chamber 403. Screwdriver slot 5. Top screw 6. Circlip 7. Straight introduction head 701. Block 8. Intraocular lens DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to specific embodiments and accompanying drawings to facilitate understanding of the present invention.

[0027] like Figure 1-3 The figures show the structure schematic diagram, cross-sectional diagram, and exploded diagram of a reusable rotary intraocular lens injection system provided by the present invention. The reusable rotary intraocular lens injection system includes a metal injector and a straight introduction head 7. The metal injector is composed of a main body 1, an injection rod 2, a rotating handle 3, a decorative cap 4, a top screw 5, and a retaining spring 6. The front end of the main body 1 is snap-connected to the straight introduction head 7, and an intraocular lens 8 is placed in an inverted S-shaped manner inside the straight introduction head 7. The rear end of the main body 1 is threadedly connected to the rotating handle 3, and the rear end of the rotating handle 3 is installed with a decorative cap 4. The injection rod 2 runs through the interior of the main body 1.

[0028] like Figure 4 Figure 1 is a schematic diagram of the main structure of a reusable rotary intraocular lens injection system provided by the present invention. The front end of the main body 1 is provided with a straight guide head slot 101 and a light-transmitting window 102. The rear end of the main body 1 is provided with an internal thread 103. A guide hole 106 is provided inside the main body 1, through which the injection rod 2 extends. A rearward guide 107 and a forward guide 104 are provided at the front and rear ends of the guide hole 106, respectively. A push rod stop 105 is provided in front of the forward guide 104.

[0029] like Figure 5Figure 2 shows a schematic diagram of the structure of an injection rod for a reusable, rotary intraocular lens injection system according to the present invention. The front end of the injection rod 2 is provided with an injection head 206, which is a foldable lens injection head. This foldable lens injection head cooperates with the straight introduction head 7 to fold the intraocular lens 8 for injection. The tail end of the push rod 2 is provided with a rotating shaft 204, and the end of the rotating shaft 204 is provided with a retaining spring groove 205. The retaining spring 6 is installed in the retaining spring groove 205. The middle part of the push rod 2 is provided with an anti-rotation stop 201, and the anti-rotation stop 201 is cooperated and connected with the push rod limit 105 of the main body 1 to prevent rotation and guide the push rod 2 to move forward and backward. The front part of the anti-rotation stop 201 is provided with a backward limit 202, and the backward limit 202 is limited by the backward guide 107 of the main body 1 to prevent the push rod 2 from being pulled out of the main body 1. The tail part of the anti-rotation stop 201 is provided with a top screw groove 203, and the top screw 5 is installed in the top screw groove 203. The top screw 5 is limited by the forward guide 104 of the main body 1 to prevent the push rod 2 from being pushed too long and damaging the human eye.

[0030] like Figure 6 The figure shows a schematic diagram of the rotating handle structure of a reusable rotary intraocular lens injection system provided by the present invention. The external part of the rotating handle 3 is provided with an external thread 302, and the external thread 302 is engaged with the internal thread 103 of the main body 1, and the injection rod 2 is driven to move forward and backward by rotating the rotating handle 3. The tail end of the rotating handle 3 is provided with a decorative internal thread 304. The interior of the rotating handle 3 is provided with an injection rod rotation groove 301 that matches the rotation axis 204 of the injection rod 2, and the front of the injection rod rotation groove 301 is provided with an injection rod moving hole 303. During installation, the rotating handle 3 is inserted from the tail end of the injection rod 2, and the injection rod 2 is moved into the injection rod moving hole 303, so that the retaining spring groove 205 leaks out, and the retaining spring 6 is installed. After that, the rotating handle 3 is retracted, and the top screw groove 203 leaks out, and the top screw 5 is installed. The rotating handle 3 moves forward to stop to prevent it from falling off, which is convenient for injection.

[0031] like Figure 7 Figure 4 shows a schematic diagram of the decorative cap structure of a reusable rotary intraocular lens injection system provided by the present invention. The outer surface of the decorative cap 4 is provided with a decorative external thread 401. A screwdriver is used to rotate the screwdriver slot 403 to engage the decorative internal thread 304 with the decorative external thread 401, preventing the decorative cap 4 from falling out. A rotating cavity 402 is provided on the inner surface of the decorative cap 4, within which the injection rod 2 can freely rotate.

[0032] like Figure 8Figure 1 is a schematic diagram of the structure of a straight inserter head for a reusable rotary intraocular lens injection system provided by the present invention. A clamping block 701 is provided at the rear end of the straight inserter head 7. This clamping block 701 engages with the straight inserter head slot 101 of the main body 1, ensuring a secure fit during injection and preventing it from falling out. It also facilitates assembly and disassembly, making operation simple.

[0033] The assembly process of the present invention comprises the following steps:

[0034] ① The injection rod 2 is inserted into the main body 1 from the front end;

[0035] ②The rotating handle 3 is installed into the rear end of the injection rod 2;

[0036] ③ The retaining spring 6 is connected to the injection rod 2 to prevent the handle 3 from falling off after rotation;

[0037] ④ Screw the top screw 5 into the injection rod 2 position;

[0038] ⑤Install the decorative cap 4. The metal injector assembly is now complete.

[0039] ⑥ The intraocular lens 8 is placed into the straight introduction head 7 in an inverted S-shaped position;

[0040] ⑦The straight introduction head 7 is installed on the metal injector to complete the assembly.

[0041] The working principle of the present invention is:

[0042] Inject the viscoelastic agent into the straight introduction head 7, use tweezers to place the artificial lens 8 into the straight introduction head 7, install the straight introduction head 7 on the injection device, and start to slowly push the injection rod 2. When the rotating handle 3 is threadedly engaged with the main body 1, start to rotate the handle 3, and the injection rod 2 continues to move forward to inject the lens into the human eye to complete the injection.

[0043] During use of the present invention, the operator only needs to hold the metal injector with one hand and rotate the rotary handle 3 with the other hand to complete the implantation of the artificial lens 8. The operation is convenient, time-saving and labor-saving, the injection speed is uniform, the operation stability is high, the damage to the patient is small, and the lens does not need to be pre-folded when it is loaded into the straight introduction head 7, which is simple to operate. The present invention adopts a pre-installed type, which can be used for both hydrophilic artificial lenses and hydrophobic artificial lenses. The artificial lens 8 is implanted into the eye through the straight introduction head 7, avoiding damage to the lens caused by artificial lens installation. The injector of the present invention is made of metal and is reusable. Compared with disposable plastic injectors, it is cheaper and significantly reduces the cost of use.

[0044] This document uses specific examples to illustrate the inventive concept in detail. The above embodiments are only intended to help understand the core concept of the present invention. It should be noted that any obvious modifications, equivalent substitutions, or other improvements made by a person skilled in the art without departing from the inventive concept should be included within the scope of protection of the present invention.

Claims

1. A reusable rotary intraocular lens injection system, characterized in that: The invention comprises a metal injector and a straight introduction head, wherein the metal injector is composed of a main body, an injector rod, a rotating handle, a decorative cap, a top screw and a retaining spring. The front end of the main body is snap-connected with the straight introduction head, an artificial lens is placed in an inverted S shape in the straight introduction head, the tail end of the main body is threadedly connected with the rotating handle, the tail end of the rotating handle is installed with a decorative cap, a guide hole is provided inside the main body, the injector rod passes through the guide hole, the front end and the rear end of the guide hole are respectively provided with a backward guide and a forward guide, a injector rod limiter is provided in front of the forward guide, the front end of the injector rod is provided with an injector head, and the tail end is provided with a There is a rotating shaft, the end of the rotating shaft is provided with a retaining ring groove, the retaining ring is installed in the retaining ring groove, the middle part of the push rod is provided with an anti-rotation stop, the anti-rotation stop is connected with the push rod limit to prevent rotation and guide the push rod to move forward and backward, the front part of the anti-rotation stop is provided with a backward limit, the backward limit and the backward guide limit prevent the push rod from being pulled out of the main body, the tail of the anti-rotation stop is provided with a top screw groove, the top screw is installed in the top screw groove, and together with the forward guide limit, the interior of the rotating handle is provided with a push rod rotating groove that matches the rotating shaft, and the front of the push rod rotating groove is provided with a push rod moving hole.

2. The reusable rotary intraocular lens injection system according to claim 1, characterized in that: A straight-type introduction head slot is provided at the front end of the main body, and a clamping block is provided at the rear end of the straight-type introduction head. The clamping block is buckled and connected with the straight-type introduction head slot.

3. The reusable rotary intraocular lens injection system according to claim 2, characterized in that: The injection head is an easy-folding lens injection head, which cooperates with a straight introduction head to fold and inject the intraocular lens.

4. The reusable rotary intraocular lens injection system according to claim 3, characterized in that: A light-transmitting window is provided at the front end of the main body.

5. The reusable rotary intraocular lens injection system according to claim 4, characterized in that: The tail end of the rotating handle is provided with a decorative internal thread, and the outer side of the decorative cap is provided with a decorative external thread. The decorative internal thread is engaged with the decorative external thread by rotating the screwdriver slot with a screwdriver.

6. The reusable rotary intraocular lens injection system according to claim 5, characterized in that: A rotating cavity is provided on the inner side of the decorative cap, and the injection rod can rotate freely in the rotating cavity.

7. The reusable rotary intraocular lens injection system according to claim 6, characterized in that: The outside of the rotating handle is provided with an external thread, and the tail end of the main body is provided with an internal thread. The internal thread is engaged with the external thread, and the injection rod is driven to move forward and backward by rotating the rotating handle.

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