Preloaded injection system for intraocular lens

Abstract

A push rod is arranged in an inner cavity at the rear end of a main body, the front end of the main body is connected with a leading-in head through a buckle and a clamping groove, an intraocular lens is preassembled in a lens preassembling part at the front end of the main body, a lens pressing piece for prepressing the intraocular lens is arranged at the rear end of the leading-in head, and a lens pressing piece cover is arranged on the upper side of the lens pressing piece. The crystal pressing sheet is fixed between the main body and the crystal pressing sheet cover, the crystal pressing sheet moves back and forth between the main body and the crystal pressing sheet cover, a crystal pressing sheet rotating handle is arranged on the outer sides of the crystal pressing sheet and the crystal pressing sheet cover, the crystal pressing sheet is in transmission connection with the crystal pressing sheet rotating handle through threads, and the crystal pressing sheet rotating handle is connected with the main body through a buckle and a clamping groove. The pre-pressing device is simple in structure, ingenious in design, capable of reducing the risk of pollution and reducing the workload of doctors due to the adoption of a pre-pressing mode, more stable in thread transmission due to the adoption of a rotary thread injection mode, capable of effectively preventing the crystal from being damaged, wide in application prospect and beneficial to popularization and application.

Description

Technical Field

[0001] The utility model relates to the technical field of artificial lenses, in particular to an artificial lens pre-installed push injection system. Background Art

[0002] Artificial lenses are currently the most effective method for correcting aphakic refraction. In the prior art, tweezers are used to place the artificial lens into the artificial lens implantation device, a folding device is used to fold the artificial lens, and then the artificial lens is implanted into the eye through the implantation device body. The implantation process is complicated and needs to be operated by trained nurses. It is highly professional, so it is prone to problems. In addition, when tweezers are used to clamp the artificial lens, it will cause damage to the artificial lens. When the artificial lens is operated in the operating room, it is also easy to increase the risk of contamination of the artificial lens, increase the probability of infection in patients, and cause patients to recover more slowly. In addition, the artificial lens in the prior art is pre-pressed by a push-pull method, which is unstable and easy to damage the lens. Therefore, it is urgent to develop an artificial lens pre-installed push injection system to solve the above technical problems.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide an artificial lens preloaded injection system with a simple structure and ingenious design. The preloaded type can not only reduce the risk of contamination, but also reduce the workload of doctors. The rotary threaded injection method is used for pre-compression, and the threaded transmission is more stable, which can effectively prevent lens damage. It has broad application prospects and is conducive to popularization and application.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an artificial lens pre-installed push injection system, including a main body, a push rod, an introduction head, a lens pressing cover, a lens pressing tablet, a lens pressing tablet rotating handle and an artificial lens, the inner cavity at the rear end of the main body is provided with a push rod, the front end of the main body is connected with the introduction head through a buckle slot, the crystal pre-installed part at the front end of the main body is pre-installed with an artificial lens, the rear end of the introduction head is provided with a crystal pressing tablet for pre-pressing the artificial lens to prevent the lens from falling off or deforming, a crystal pressing tablet cover is provided on the upper side of the crystal pressing tablet, the crystal pressing tablet is fixed between the main body and the crystal pressing cover, and the crystal The body pressing piece can move back and forth between the main body and the crystal pressing piece cover, and a crystal pressing piece rotating handle is provided on the outside of the crystal pressing piece and the crystal pressing piece cover, and the crystal pressing piece and the crystal pressing piece rotating handle are connected by a threaded transmission, and the crystal pressing piece rotating handle is connected to the main body by a snap-on slot, and external threads are provided on both sides of the crystal pressing piece, which are engaged with the internal spiral of the crystal pressing piece rotating handle. The crystal pressing piece is driven to move forward by rotating the crystal pressing piece rotating handle. When the crystal pressing piece reaches the appropriate position, the stop surface of the crystal pressing piece blocks the artificial lens from continuing to move forward, and at this time, the push rod is pushed to complete the injection.

[0006] Preferably, a crystal pre-loading part is provided at the front end of the main body, two symmetrical guide head buckles and an anti-fool groove are provided on the rear side of the crystal pre-loading part, two left-right symmetrical crystal pressing cover slots are provided on the rear side of the two symmetrical guide head buckles and the anti-fool groove, a limiting surface is provided on the upper side of the crystal pressing cover slot, a crystal pressing cover rotating handle buckle is provided at the rear end of the crystal pressing cover slot, two symmetrical anti-rotation grooves are provided in the inner cavity at the rear end of the main body, an anti-over stop surface is provided at the front end of the two symmetrical anti-rotation grooves, and an anti-slip stop surface is provided at the tail end of the main body.

[0007] Preferably, an inner spiral is provided at the front end of the inner side of the crystal compression rotating handle, and a rotation slot is provided at the rear end of the inner side of the crystal compression rotating handle. The rotation slot is connected to the crystal compression rotating handle buckle of the main body. The compression rotating handle buckle is restricted in the rotation slot and can only rotate but cannot move forward and backward. The crystal compression rotating handle is provided with an anti-slip groove to prevent the doctor from slipping during operation and affecting the surgical effect.

[0008] Preferably, an anti-rotation structure, an anti-slip stop buckle and two anti-over-stop surfaces are provided in the middle part of the push rod. The anti-rotation structure is cooperated and connected with the anti-rotation groove of the main body to prevent rotation from affecting the surgical effect (it may damage or scratch the artificial lens, and may also damage the introduction head, resulting in poor injection, etc.), the anti-slip stop buckle cooperates with the anti-slip stop surface of the main body to prevent the push rod from slipping out of the main body and affecting the operation, the second anti-over-stop surface is cooperated and connected with the first anti-over-stop surface of the main body to prevent the push rod from being pushed out excessively and affecting the surgical effect (excessive pushout may easily scratch the eyes and cause irreversible damage to the patient), and a push handle is provided at the tail of the push rod to facilitate the doctor's operation.

[0009] Preferably, the tail of the introduction head is provided with an anti-fool platform and a main body slot. The anti-fool platform cooperates with the anti-fool slot of the main body, which can facilitate installation and prevent reverse installation, so as to improve production efficiency and reduce labor costs. The main body slot is connected with the introduction head of the main body by snap-fitting to fix the introduction head.

[0010] Preferably, a movement groove symmetrical on both sides is provided in the middle of the crystal pressing cover, and the movement groove and the limiting surface of the main body form a movement cavity. A movement limiting structure is provided at the rear end of the stop surface of the crystal pressing plate, and the movement limiting structure moves back and forth in the movement cavity. Four symmetrical buckles are respectively provided on both sides of the movement groove. After assembling the crystal pressing plate, the crystal pressing cover is fixedly connected with the crystal pressing rotating handle buckle of the main body, and then the crystal pressing rotating handle is inserted into the crystal pressing cover buckle of the main body to complete the assembly.

[0011] The utility model provides an artificial lens pre-installed push injection system, which has the following beneficial effects.

[0012] 1. The utility model has a simple structure and ingenious design. It adopts a rotary thread push injection method for pre-compression. The thread transmission is more stable and can effectively prevent crystal damage. It has broad application prospects and is conducive to popularization and application.

[0013] 2. The utility model is pre-installed, and the crystal is pre-installed in the factory's sterile workshop, which not only reduces the risk of contamination, reduces the chance of infection, and speeds up the patient's recovery, but also saves the doctor from the tedious work of inserting the crystal, reduces the doctor's workload, and also reduces the probability of the crystal being crushed when the crystal is inserted into the instrument and flowing into the patient's body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of an intraocular lens pre-installed push injection system provided by the utility model;

[0015] Figure 2 A cross-sectional view of an intraocular lens pre-installed push injection system provided by the utility model;

[0016] Figure 3 An exploded diagram of an intraocular lens pre-installed push injection system provided by the utility model;

[0017] Figure 4 A schematic diagram of the main structure of an intraocular lens pre-installed push injection system provided by the utility model;

[0018] Figure 5 A schematic diagram of the structure of an introduction head of an artificial lens pre-installed push injection system provided by the utility model;

[0019] Figure 6 A schematic diagram of the structure of a lens pressing cover of an intraocular lens pre-installed push injection system provided by the utility model;

[0020] Figure 7 A schematic diagram of a push rod structure of an intraocular lens pre-installed push injection system provided by the utility model;

[0021] Figure 8 A schematic diagram of a lens pressing structure of an artificial lens pre-installed push injection system provided by the utility model;

[0022] Fig. 9 The utility model provides a schematic diagram of the structure of a lens tablet pressing rotating handle of an artificial lens pre-installed push injection system.

[0023] In the figure:

[0024] 1. Main body 101. Crystal pre-installed part 102. Crystal pressing rotating handle buckle 103. Introduction head buckle 104. Anti-rotation groove 105. Anti-fool groove 106. Anti-slip stop surface 107. Anti-over-stop surface 1 108. Crystal pressing cover slot 109. Limiting surface 2. Push rod 201. Anti-rotation structure 202. Anti-slip stop buckle 203. Anti-over-stop surface 2 204. Push handle 3. Introduction head 301. Main body slot 302. Anti-fool table 4. Crystal pressing cover 401. Buckle 402. Movement slot 5. Crystal pressing 501. Stop surface 502. External thread 503. Movement limiting structure 6. Crystal pressing rotating handle 601. Internal spiral 602. Rotation slot 603. Anti-slip groove 7. Artificial lens. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with specific embodiments and drawings to help understand the content of the present invention.

[0026] like Figure 1-3 The figures shown are respectively a schematic diagram, a cross-sectional diagram and an exploded diagram of a pre-installed intraocular lens push-injection system provided by the utility model. The pre-installed intraocular lens push-injection system comprises a main body 1, a push rod 2, an introduction head 3, a lens pressing cover 4, a lens pressing plate 5, a lens pressing plate rotating handle 6 and an intraocular lens 7. The rear end inner cavity of the main body 1 is provided with a push rod 2, the front end of the main body 1 is connected with the introduction head 3 via a snap-fit ​​slot, the lens pre-installation part 101 at the front end of the main body 1 is pre-installed with an intraocular lens 7, the rear end of the introduction head 3 is provided with a lens pressing plate 5 for pre-pressing the intraocular lens 7 to prevent the lens from falling off or deforming, the upper side of the lens pressing plate 5 is provided with a lens pressing cover 4, the crystal pressing plate 5 is fixed between the main body 1 and the crystal pressing cover 4, and the crystal pressing plate 5 can be fixed between the main body 1 and the crystal pressing plate The crystal pressing sheet 5 moves back and forth between the crystal pressing cover 4, and a crystal pressing rotating handle 6 is provided on the outside of the crystal pressing sheet 5 and the crystal pressing cover 4. The crystal pressing sheet 5 and the crystal pressing rotating handle 6 are connected by threaded transmission. The crystal pressing rotating handle 6 is connected to the main body 1 through a buckle slot. External threads 502 are provided on both sides of the crystal pressing sheet 5, which are meshed with the internal screw 601 of the crystal pressing rotating handle 6. The crystal pressing sheet 5 is driven to move forward by rotating the crystal pressing rotating handle 6. When the crystal pressing sheet 5 reaches the appropriate position, the stop surface 501 of the crystal pressing sheet 5 blocks the artificial lens 7 from continuing to move forward. At this time, the push rod 2 is pushed to complete the injection. Figure 8 The figure shows a schematic diagram of the lens pressing structure of an artificial lens pre-installed push injection system provided by the utility model.

[0027] like Figure 4The figure shows a schematic diagram of the main structure of an artificial lens pre-installed push injection system provided by the utility model. A lens pre-installed part 101 is provided at the front end of the main body 1, and two symmetrical introduction head buckles 103 and an anti-idiot groove 105 are provided at the rear side of the lens pre-installed part 101. Two left-right symmetrical lens pressing cover slots 108 are provided at the rear side of the two symmetrical introduction head buckles 103 and the anti-idiot groove 105. A limiting surface 109 is provided on the upper side of the lens pressing cover slot 108, and a lens pressing rotating handle buckle 102 is provided at the rear end of the lens pressing cover slot 108. Two symmetrical anti-rotation grooves 104 are provided in the inner cavity at the rear end of the main body 1, and an anti-over-stop surface 107 is provided at the front end of the two symmetrical anti-rotation grooves 104, and an anti-slip stop surface 106 is provided at the tail end of the main body 1.

[0028] like Fig. 9 The figure shows a schematic diagram of the structure of a lens compression rotating handle of an intraocular lens pre-installed push injection system provided by the utility model. The front end of the inner side of the lens compression rotating handle 6 is provided with an inner spiral 601, and the rear end of the inner side of the lens compression rotating handle 6 is provided with a rotation slot 602, and the rotation slot 602 is connected to the lens compression rotating handle buckle 102 of the main body 1. The compression rotating handle buckle is restricted in the rotation slot 602 and can only rotate but cannot move forward and backward. The lens compression rotating handle 6 is provided with an anti-skid groove 603 to prevent the doctor from slipping during operation and affecting the surgical effect.

[0029] like Figure 7 The figure shows a schematic diagram of the push rod structure of an intraocular lens pre-installed push injection system provided by the utility model. The push rod 2 is provided with an anti-rotation structure 201, an anti-slip stop buckle 202 and an anti-over-stop surface 203 in the middle part. The anti-rotation structure 201 is connected with the anti-rotation groove 104 of the main body 1 to prevent rotation from affecting the surgical effect (it may damage or scratch the intraocular lens 7, and it may also damage the introduction head 3, resulting in unsmooth push injection, etc.), the anti-slip stop buckle 202 is connected with the anti-slip stop surface 106 of the main body 1 to prevent the push rod 2 from slipping out of the main body 1 and affecting the operation, the anti-over-stop surface 203 is connected with the anti-over-stop surface 107 of the main body 1 to prevent the push rod 2 from being pushed out excessively and affecting the surgical effect (excessive push out may easily scratch the eyes and cause irreversible damage to the patient), and the tail of the push rod 2 is provided with a push injection handle 204 for the convenience of doctor operation.

[0030] like Figure 5 The figure is a schematic diagram of the structure of an introduction head of an intraocular lens pre-installed push injection system provided by the utility model. The tail of the introduction head 3 is provided with an anti-fool platform 302 and a main body slot 301. The anti-fool platform 302 cooperates with the anti-fool slot 105 of the main body 1 to facilitate installation and prevent reverse installation, thereby improving production efficiency and reducing labor costs. The main body slot 301 cooperates with the introduction head buckle 103 of the main body 1 to fix the introduction head 3.

[0031] like Figure 6 The figure shows a schematic diagram of the structure of a crystal compression cover of an artificial lens pre-installed push injection system provided by the utility model. The middle part of the crystal compression cover 4 is provided with a bilaterally symmetrical motion groove 402, and the motion groove 402 and the limiting surface 109 of the main body 1 form a motion cavity, and the rear end of the stop surface 501 of the crystal compression 5 is provided with a motion limiting structure 503, and the motion limiting structure 503 moves forward and backward in the motion cavity. Four symmetrical buckles 401 are respectively provided on both sides of the motion groove 402. After assembling the crystal compression 5, the crystal compression cover 4 is fixedly connected with the crystal compression rotating handle buckle 102 of the main body 1, and then the crystal compression rotating handle 6 is inserted into the crystal compression cover card slot 108 of the main body 1 to complete the assembly.

[0032] The assembly process of the utility model is:

[0033] Connect the push rod 2 to the main body 1 with a snap-fit ​​connection, and insert the push rod 2 from the rear end of the main body 1 to ensure that the anti-rotation structure 201 of the push rod 2 cooperates with the anti-rotation groove 104 of the main body 1 and cannot rotate; install the crystal pressing plate 5 in the main body 1; connect the crystal pressing plate cover 4 with the snap-fit ​​connection 401 and install it on the main body 1; install the crystal pressing plate rotating handle 6 on the above components, and connect the rotating slot 602 of the crystal pressing plate rotating handle 6 with the crystal pressing plate rotating handle snap 102 of the main body 1; place the artificial lens 7 upside down in the crystal pre-installed part 101 of the main body 1; insert the introduction head 3 into the front end of the main body 1 to complete the assembly.

[0034] The working principle of the utility model is:

[0035] The viscoelastic agent is injected into the introduction head 3 through the injection hole of the introduction head, the lens pressing sheet rotating handle 6 is manually rotated to drive the lens pressing sheet 5 to pre-press and pre-push the artificial lens 7, and the push rod 2 is manually pushed forward. The push rod 2 moves forward to push the artificial lens 7 through the introduction head 3, thereby completing the injection of the artificial lens 7.

[0036] The utility model is pre-installed, and the crystal is pre-installed in the factory's sterile workshop, which not only reduces the risk of contamination, reduces the chance of infection, and speeds up the patient's recovery, but also saves the doctor's tedious work of loading the crystal, reduces the doctor's workload, and also reduces the probability of the crystal being crushed and flowing into the patient's body when the crystal is loaded into the instrument. The utility model has a simple structure and a clever design. It adopts a rotary thread push injection method for pre-compression, and the thread transmission is more stable, which can effectively prevent crystal damage, has a broad application prospect, and is conducive to popularization and application.

[0037] This article uses specific examples to explain the concept of the utility model in detail, and the description of the above embodiments is only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, any obvious modifications, equivalent substitutions or other improvements made without departing from the concept of the utility model should be included in the scope of protection of the utility model.

Claims

1. An intraocular lens pre-installed push injection system, characterized in that: The lens clamp comprises a main body, a push rod, an introduction head, a crystal pressing cover, a crystal pressing sheet, a crystal pressing sheet rotating handle and an artificial lens, wherein a push rod is provided in an inner cavity at the rear end of the main body, the front end of the main body is connected with the introduction head through a snap-fit ​​slot, an artificial lens is pre-installed in a crystal pre-installing part at the front end of the main body, a crystal pressing sheet for pre-pressing the artificial lens is provided at the rear end of the introduction head, a crystal pressing sheet cover is provided on the upper side of the crystal pressing sheet, the crystal pressing sheet is fixed between the main body and the crystal pressing cover, the crystal pressing sheet moves back and forth between the main body and the crystal pressing cover, a crystal pressing sheet rotating handle is provided on the outer side of the crystal pressing sheet and the crystal pressing sheet cover, the crystal pressing sheet and the crystal pressing sheet rotating handle are connected by threaded transmission, the crystal pressing sheet rotating handle is connected to the main body through a snap-fit ​​slot, external threads are provided on both sides of the crystal pressing sheet, which are meshed with the inner spiral of the crystal pressing sheet rotating handle, the crystal pressing sheet is driven to move forward by rotating the crystal pressing sheet rotating handle, and when the crystal pressing sheet reaches an appropriate position, the stop surface of the crystal pressing sheet blocks the artificial lens from continuing to move forward, and at this time, the push rod is pushed to complete the injection.

2. The pre-installed intraocular lens injection system according to claim 1, characterized in that: A crystal pre-loading part is provided at the front end of the main body, and two symmetrical guide head buckles and an anti-fool groove are provided at the rear side of the crystal pre-loading part, and two left-right symmetrical crystal pressing cover slots are provided at the rear side of the two symmetrical guide head buckles and the anti-fool groove, and a limiting surface is provided on the upper side of the crystal pressing cover slot, and a crystal pressing rotating handle buckle is provided at the rear end of the crystal pressing cover slot, and two symmetrical anti-rotation grooves are provided in the inner cavity at the rear end of the main body, and an anti-over stop surface is respectively provided at the front end of the two symmetrical anti-rotation grooves, and an anti-slip stop surface is provided at the tail end of the main body.

3. The pre-installed intraocular lens injection system according to claim 2, characterized in that: An inner spiral is provided at the front end of the inner side of the crystal pressing rotating handle, and a rotation slot is provided at the rear end of the inner side of the crystal pressing rotating handle. The rotation slot is connected to the crystal pressing rotating handle buckle of the main body. The pressing rotating handle buckle is restricted in the rotation slot and can only rotate but cannot move forward or backward. The crystal pressing rotating handle is provided with an anti-slip groove.

4. The pre-installed intraocular lens injection system according to claim 3, characterized in that: An anti-rotation structure, an anti-slip stop buckle and an anti-over-stop surface No. 2 are provided in the middle of the push rod. The anti-rotation structure is cooperated and connected with the anti-rotation groove of the main body to prevent rotation. The anti-slip stop buckle is cooperated with the anti-slip stop surface of the main body to prevent the push rod from escaping from the main body. The anti-over-stop surface No. 2 is cooperated and connected with the anti-over-stop surface No. 1 of the main body to prevent the push rod from being pushed out excessively. A push handle is provided at the tail of the push rod to facilitate the doctor's operation.

5. The pre-installed intraocular lens injection system according to claim 4, characterized in that: The tail of the introduction head is provided with an anti-fool platform and a main body slot. The anti-fool platform cooperates with the anti-fool slot of the main body, which can facilitate installation and prevent reverse installation. The main body slot is connected with the introduction head of the main body by snap-fitting to fix the introduction head.

6. The pre-installed intraocular lens injection system according to claim 5, characterized in that: The middle part of the crystal pressing cover is provided with movement grooves symmetrical on both sides, and the movement groove and the limiting surface of the main body form a movement cavity. The rear end of the stop surface of the crystal pressing cover is provided with a movement limiting structure, and the movement limiting structure moves back and forth in the movement cavity. Four symmetrical buckles are respectively provided on both sides of the movement groove. After assembling the crystal pressing cover, the crystal pressing cover is fixedly connected with the crystal pressing rotating handle buckle of the main body, and then the crystal pressing rotating handle is inserted into the crystal pressing cover slot of the main body to complete the assembly.

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