Preassembled injector for intraocular lens
The pre-installed bolt injector driven by rotary gear rack and worm rack is solved, and the stability and pollution problems during the implantation of artificial lenses are achieved, achieving efficient crystal pre-pressure and safe implantation process.
Patent Information
- Application Number
- CN202420666085.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-02
AI Technical Summary
In the prior art, the intraocular lens implantation process is complicated, which can easily cause crystal damage and contamination. The push-pull bolt injector is unstable, which increases the risk of infection in patients and the complexity of surgery.
The pre-installed bolt injector using rotary gear rack and worm rack transmission method drives the bolt injector lever back and forth in the main cavity through the rotating handle, and combines the lead head and crystal pressing snaps to ensure transmission stability and Prevent the crystal from falling off or deforming.
It effectively prevents crystal damage, reduces the risk of infection, simplifies doctors' operations, and improves the safety and efficiency of the surgery.
Smart Images
Figure CN222195206U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of artificial lenses, in particular to an artificial lens pre-installed pusher. 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 also 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 the patient, and cause the patient to recover slowly. In addition, the artificial lens in the prior art is pre-pressed in a push-pull manner, which is unstable and easy to damage the lens. And the injection speed of the push-pull injector is uneven, which is easy to cause damage to the patient. Therefore, it is urgent to develop an artificial lens pre-installed injector 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 pre-installed pusher, which adopts a rotating gear rack push method to pre-press the artificial lens. The gear rack transmission has high stability and can effectively prevent lens damage. The worm rack method is used for transmission push, which further improves the transmission stability. 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 pusher, including a rotating handle, a main body, an introduction head, a lens compression clip, a push rod, a push needle, a lens compression, an artificial lens, a lens compression rotating handle and a rotating handle cover. The rear end of the main body is connected to the rotating handle through a clip slot, and the inner cavity at the rear end of the main body is provided with a push rod. The push rod and the rotating handle are connected through a worm gear rack transmission. By rotating the rotating handle, the push rod is driven to move forward and backward in the inner cavity of the main body. The front end of the push rod is connected to the push needle through a clip slot, and a rotating handle cover is provided on the lower side of the push rod. The rotating handle cover is fixedly connected to the main body through a buckle slot, and the rotating handle is inserted into the rotating handle cover to prevent swinging during rotation and ensure the stability of transmission. The front end of the main body is connected with an introduction head through a buckle slot, and an artificial lens is pre-installed in the crystal pre-installation part at the front end of the main body. The rear end of the introduction head is provided with a crystal pressing sheet for pre-pressing the artificial lens to prevent the artificial lens from falling off or deforming. The upper side of the crystal pressing sheet is connected with a crystal pressing rotating handle through a gear rack transmission, and a crystal pressing buckle is provided on the upper side of the crystal pressing rotating handle, and the crystal pressing rotating handle is fixedly connected to the main body through a buckle slot.
[0006] Preferably, two symmetrical guide head buckles and an anti-foolproof groove are provided on the rear side of the crystal pre-installation part at the front end of the main body, and a crystal pressing piece stop surface is provided at the rear end of the guide head buckle and the anti-foolproof groove, and two left-right symmetrical connecting slots 1 are provided at the rear end of the crystal pressing piece stop surface, and two left-right symmetrical rotation fixing grooves are provided at the rear end of the two left-right symmetrical connecting slots 1, and an anti-slip groove is provided on the inner side of the left rotation fixing groove, and a moving slot 1 is provided between the two symmetrical rotation fixing grooves, and a rotating handle connecting buckle is provided at the rear end of the main body, and an anti-rotation groove is provided in the inner cavity of the rear end of the main body, and two symmetrical connecting slots 2 are provided at the front end of the rotating handle connecting buckle.
[0007] Preferably, a rotating connecting column is provided on the inner side of the rotating handle, a worm gear is provided on the rotating connecting column, a rotating connecting shaft is provided at the front end of the rotating connecting column, a rotating part is provided on the outer side of the rotating handle, and an anti-slip groove is provided on the outer side of the rotating part to prevent the doctor from slipping and affecting the surgical effect during operation. The inner side of the rotating part is provided with two symmetrical connecting slot front ends and a connecting slot rear end, and a main body connecting slot is provided between the connecting slot front end and the connecting slot rear end. The front end of the connecting slot is sloped, and is provided with a connecting slot front end head and a connecting slot front end tail. The diameter of the connecting slot front end tail is larger than the connecting slot front end head, and the diameters of the connecting slot front end tail and the connecting slot rear end are the same, both of which are smaller than the diameter of the main body's rotating handle connecting buckle. The main body's rotating handle connecting buckle and the connecting slot front end are inserted into the main body connecting buckle through interference fitting to prevent the main body's rotating handle connecting buckle from moving back and forth. The sloped design facilitates the insertion of the rotating handle connecting buckle into the rotating handle.
[0008] Preferably, a rack tooth is provided in the middle part of the push rod, which is meshed with the worm teeth of the rotating handle, and the push rod is driven to move forward and backward by rotating the rotating handle. An anti-rotation guide groove is provided on the opposite side of the push rod, which is cooperated with the anti-rotation groove of the main body to prevent the push rod from rotating and guide the push rod to move forward and backward. A push needle clamping groove and a push rod connection anti-rotation structure are provided at the front end of the push rod. A forward end surface 1 and a backward end surface 1 are respectively provided at the starting end and the tail end of the rack tooth of the push rod. A rotating handle anti-sway transmission groove is provided at the rear end of the push rod, which can not only avoid the rotating connecting column of the rotating handle, but also limit the push rod between the rotating handle and the main body to prevent the push rod from shaking and affecting the transmission effect, thereby affecting the surgical effect.
[0009] Preferably, the push needle is provided with a push rod buckle and a push rod anti-rotation platform, the push rod buckle is cooperatively connected with the push needle slot of the push rod, and the push rod anti-rotation platform is cooperatively connected with the push rod connection anti-rotation structure of the push rod to prevent the push needle from rotating and affecting the injection effect.
[0010] Preferably, an automatically folding asymmetric inner cavity is provided in the introduction head, which can fold the sheet-like artificial lens into a smaller ball and push it into the eye. An anti-fool platform and two symmetrical main body slots are provided at the rear end of the introduction head. The anti-fool platform cooperates with the anti-fool slot of the main body, which is convenient for installation and can prevent reverse installation, so as to improve production efficiency and reduce labor costs. The main body slot cooperates with the introduction head buckle to fix the introduction head on the main body.
[0011] Preferably, a stop surface is provided at the tail end of the crystal press. When the crystal press is pushed to an appropriate position, the stop surface contacts the stop surface of the crystal press of the main body to prevent the artificial lens from continuing to move forward. A guide surface is provided at the front end of the upper side of the crystal press. A rack is provided on the upper side of the guide surface. A motion buckle is provided at the middle part of the lower side of the crystal press, which is engaged with the motion slot of the main body to guide the forward and backward movement and prevent the crystal press from falling out. A crystal pressing tongue is provided at the front end of the crystal press. Before use, the crystal pressing tongue is always in the crystal pre-installed part of the main body to pre-fix the artificial lens.
[0012] Preferably, a handle is provided at the front end of the lens compression rotating handle to facilitate the doctor's operation, and a connecting buckle is provided at the rear end of the lens compression rotating handle, which cooperates with the anti-slip groove of the main body to prevent it from slipping out during rotation and affecting the motion transmission. Gear teeth are provided between the lens compression rotating handle and the connecting buckle, and the gear teeth are engaged with the crystal compression rack. The crystal compression rotating handle is rotated to drive the crystal compression to move back and forth, so that the crystal compression tongue always pre-fixes the artificial lens, and the artificial lens moves into the introduction head according to the set direction. The lens compression rotating handle is provided with a connecting shaft.
[0013] Preferably, the rear end of the rotating handle cover is provided with two forward stop surfaces, which cooperate with the forward stop surface of the push rod to prevent the push rod from being over-pushed; the front end of the rotating handle cover is provided with two backward stop surfaces, which cooperate with the backward stop surface of the push rod to prevent the push rod from being separated from the main body; the rotating handle cover is provided with a rotating shaft hole at the axial position, which cooperates with the rotating connecting shaft of the rotating handle so that the rotating handle can rotate freely around the rotating connecting shaft; the rear end of the rotating shaft hole is provided with a rotating handle guide groove for guiding the rotating handle to penetrate into the rotating handle cover for easy installation; two symmetrical connecting claws are provided on each side of the rotating handle guide groove, which cooperate with the two symmetrical connecting grooves of the main body to fix the rotating handle cover, ensure stable transmission of the rotating handle and the push rod, and ensure the pushing effect.
[0014] Preferably, the crystal press buckle is provided with a crystal press rotating handle insertion hole, and the handle of the crystal press rotating handle is inserted into the crystal press rotating handle insertion hole so that a part of the handle is exposed on the surface to facilitate the operator to rotate. A motion slot 2 is provided in the middle of the crystal press buckle, and the axial hole formed by the rotation fixing groove of the main body and the motion slot 2 of the crystal press buckle is matched and connected with the connecting shaft of the crystal press rotating handle so that the crystal press rotating handle can rotate freely in this axial hole. Two symmetrical connecting claws 1 are provided on both sides of the motion slot 2, which are matched and connected with the two left-right symmetrical connecting slots 1 of the main body to fix the crystal press buckle, prevent the crystal press from falling off, and ensure that the crystal press moves within the designed trajectory.
[0015] The utility model provides an artificial lens pre-installed pusher, which has the following beneficial effects.
[0016] 1. The utility model adopts a rotating gear rack push injection method to pre-press the artificial lens. The gear rack transmission has high stability and can effectively prevent the lens from being damaged. The worm rack method is used for transmission push injection, which further improves the transmission stability.
[0017] 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
[0018] Figure 1 A schematic diagram of the structure of a pre-installed intraocular lens pusher provided by the utility model;
[0019] Figure 2 A cross-sectional view of a pre-installed intraocular lens injector provided by the utility model;
[0020] Figure 3An exploded view of an intraocular lens pre-installed pusher provided by the utility model;
[0021] Figure 4 A schematic diagram of the structure of a rotating handle of an intraocular lens pre-installed pusher provided by the utility model;
[0022] Figure 5 A schematic diagram of the main structure of an intraocular lens pre-installed push injector provided by the utility model;
[0023] Figure 6 A schematic diagram of the structure of an introduction head of an artificial lens pre-installed pusher provided by the utility model;
[0024] Figure 7 A schematic diagram of a lens pressing piece buckle structure of an intraocular lens pre-installed pusher provided by the utility model;
[0025] Figure 8 A schematic diagram of the structure of an injection rod of an intraocular lens pre-installed injection device provided by the utility model;
[0026] Fig. 9 A schematic diagram of the structure of an injection needle of a pre-installed intraocular lens injection device provided by the utility model;
[0027] Fig.10 A schematic diagram of a lens tablet pressing structure of an artificial lens pre-installed pusher provided by the utility model;
[0028] Fig.11 A schematic diagram of the structure of a lens tablet pressing rotating handle of an intraocular lens pre-installed pusher provided by the utility model;
[0029] Fig.12 The utility model provides a schematic diagram of the structure of a rotating handle cover of an intraocular lens pre-installed injector.
[0030] In the figure:
[0031] 1. Rotating handle 101. Rotating connecting column 102. Worm gear 103. Main body connecting slot 104. Rotating connecting shaft 105. Anti-skid slot 106. Connecting slot front end 107. Connecting slot rear end 108. Rotating part 109. Connecting slot front end head 110. Connecting slot front end tail 2. Main body 201. Crystal pre-installed part 202. Lead-in head buckle 203. Anti-rotation slot 204. Anti-fool slot 205. Connecting slot 1 206. Crystal pressing stop surface 207. Connecting slot 2 208. Rotating fixed slot 209. Anti-slip slot 210. Moving slot 1 211. Rotating handle connecting buckle 3. Lead-in head 301. Main body slot 302. Anti-fool platform 303. Automatic folding asymmetric inner cavity 4. Crystal pressing buckle 401. Crystal pressing rotating handle insertion hole 402. Moving Moving slot two 403. Connecting claw one 5. Push rod 501. Rack teeth 502. Anti-rotation guide groove 503. Push needle slot 504. Push rod connecting anti-rotation structure 505. Forward end surface one 506. Reverse end surface one 507. Rotating handle anti-sway transmission groove 6. Push needle 601. Push rod buckle 602. Push rod anti-rotation platform 7. Crystal pressing tablet 701. Stop surface 702. Guide surface 703. Rack 704. Moving buckle 705. Crystal pressing tablet tongue 8. Artificial lens 9. Crystal pressing tablet rotating handle 901. Handle 902. Connecting buckle 903. Gear teeth 904. Connecting shaft 10. Rotating handle cover 1001. Forward end surface two 1002. Rotating shaft hole 1003. Rotating handle guide groove 1004. Reverse end surface two 1005. Connecting claw two. DETAILED DESCRIPTION
[0032] The present invention will be further described below in conjunction with specific embodiments and drawings to help understand the content of the present invention.
[0033] like Figure 1-3The figures shown are respectively a schematic diagram of the structure, a cross-sectional diagram and an exploded diagram of an intraocular lens pre-installed injector provided by the utility model. The intraocular lens pre-installed injector comprises a rotating handle 1, a main body 2, an introduction head 3, a lens compression clip 4, an injection rod 5, an injection needle 6, a lens compression clip 7, an intraocular lens 8, a lens compression rotating handle 9 and a rotating handle cover 10. The rear end of the main body 2 is connected to the rotating handle 1 via a clip slot. The rear end inner cavity of the main body 2 is provided with an injection rod 5. The injection rod 5 is connected to the rotating handle 1 via a worm gear rack transmission. By rotating the rotating handle 1, the injection rod 5 is driven to move forward and backward in the inner cavity of the main body 2. The front end of the injection rod 5 is connected to the injection needle 6 via a clip slot. The lower side of the injection rod 5 is provided with a rotating handle cover 10. 10 is fixedly connected to the main body 2 through a snap-on slot, the rotating handle 1 is inserted into the rotating handle cover 10 to prevent swinging during rotation and ensure the stability of the transmission, the front end of the main body 2 is connected with an introduction head 3 through a snap-on slot, the crystal pre-installed part 201 at the front end of the main body 2 is pre-installed with an artificial lens 8, the rear end of the introduction head 3 is provided with a crystal pressing piece 7 for pre-pressing the artificial lens 8 to prevent the artificial lens 8 from falling off or deforming, the upper side of the crystal pressing piece 7 is connected to a crystal pressing rotating handle 9 through a gear rack transmission, the upper side of the crystal pressing rotating handle 9 is provided with a crystal pressing buckle 4, and the crystal pressing rotating handle 9 is fixedly connected to the main body 2 through a snap-on slot.
[0034] like Figure 5 The figure shows a schematic diagram of the main structure of an intraocular lens pre-installed pusher provided by the utility model. Two symmetrical introduction head buckles 202 and an anti-mistake groove 204 are provided at the rear side of the front end lens pre-installed part 201 of the main body 2, and the rear ends of the introduction head buckle 202 and the anti-mistake groove 204 are provided with a crystal tablet stop surface 206, and the rear end of the crystal tablet stop surface 206 is provided with two left-right symmetrical connection card slots 1 205, and the rear ends of the two left-right symmetrical connection card slots 1 205 are provided with two left-right symmetrical rotation fixing grooves 208, and the inner side of the left rotation fixing groove 208 is provided with an anti-slip groove 209, and a movement card slot 1 210 is provided between the two symmetrical rotation fixing grooves 208, and the rear end of the main body 2 is provided with a rotation handle connection buckle 211, and the rear end inner cavity of the main body 2 is provided with an anti-rotation groove 203, and the front end of the rotation handle connection buckle 211 is provided with two symmetrical connection card slots 207.
[0035] like Figure 4The figure is a schematic diagram of the structure of a rotary handle of an intraocular lens pre-installed pusher provided by the utility model. A rotary connection column 101 is provided on the inner side of the rotary handle 1, and a worm gear 102 is provided on the rotary connection column 101. A rotary connection shaft 104 is provided at the front end of the rotary connection column 101. A rotary portion 108 is provided on the outer side of the rotary handle 1. An anti-skid groove 105 is provided on the outer side of the rotary portion 108 to prevent the doctor from slipping during operation and affecting the surgical effect. Two symmetrical connection card slot front ends 106 and connection card slot rear ends 107 are provided on the inner side of the rotary portion 108. A main body connection card slot 103 is provided between the connection card slot front ends 106 and the connection card slot rear ends 107. The connection card slot front ends 106 are sloped. The main body 2 has a rotating handle 103 and a rotating handle 104. The rotating handle 103 of the main body 2 is inserted into the main body connecting slot 103 through interference fit with the connecting slot front end 106 to prevent the rotating handle 101 of the main body 2 from moving forward and backward. The slope design facilitates the insertion of the rotating handle 101 into the rotating handle 1.
[0036] like Figure 8 The figure shows a schematic diagram of the structure of the push rod of an intraocular lens pre-installed pusher provided by the utility model. The push rod 5 is provided with a rack tooth 501 in the middle part, which is meshed and connected with the worm tooth 102 of the rotating handle 1, and the push rod 5 is driven to move forward and backward by rotating the rotating handle 1. The push rod 5 is provided with an anti-rotation guide groove 502 on the opposite side, which is matched and connected with the anti-rotation groove 203 of the main body 2 to prevent the push rod 5 from rotating and guide the push rod 5 to move forward and backward. The front end of the push rod 5 is provided with a push needle clamping groove 503 and a push rod connection anti-rotation structure 504. The starting end and the tail end of the rack tooth 501 of the push rod 5 are respectively provided with a forward end surface 505 and a backward end surface 506. The rear end of the push rod 5 is provided with a rotating handle anti-sway transmission groove 507, which can not only avoid the rotating connection column 101 of the rotating handle 1, but also limit the push rod 5 between the rotating handle 1 and the main body 2, to prevent the push rod 5 from shaking and affecting the transmission effect, thereby affecting the surgical effect.
[0037] like Fig. 9 The figure is a schematic diagram of the structure of an injection needle of an intraocular lens pre-installed injection device provided by the utility model. The injection needle 6 is provided with an injection rod buckle 601 and an injection rod anti-rotation platform 602. The injection rod buckle 601 is connected with the injection needle slot 503 of the injection rod 5, and the injection rod anti-rotation platform 602 is connected with the injection rod connection anti-rotation structure 504 of the injection rod 5 to prevent the injection needle 6 from rotating and affecting the injection effect.
[0038] like Figure 6 The figure shows a schematic diagram of the structure of the introduction head of an intraocular lens pre-installed pusher provided by the utility model. The introduction head 3 is provided with an automatically folding asymmetric inner cavity 303, which can fold the sheet-like intraocular lens 8 into a smaller ball and push it into the eye. The rear end of the introduction head 3 is provided with an anti-fool platform 302 and two symmetrical main body slots 301. The anti-fool platform 302 cooperates with the anti-fool slot 204 of the main body 2, which is convenient for installation and can prevent reverse installation, so as to improve production efficiency and reduce labor costs. The main body slot 301 cooperates with the introduction head buckle 202 to fix the introduction head 3 on the main body 2.
[0039] like Fig.10 The figure shows a schematic diagram of the crystal compression structure of an intraocular lens pre-installed pusher provided by the utility model. The tail end of the crystal compression sheet 7 is provided with a stop surface 701. When the crystal compression sheet 7 is pushed to an appropriate position, the stop surface 701 contacts the crystal compression sheet stop surface 206 of the main body 2 to prevent the intraocular lens 8 from continuing to move forward. The front end of the upper side of the crystal compression sheet 7 is provided with a guide surface 702. The upper side of the guide surface 702 is provided with a rack 703. The middle part of the lower side of the crystal compression sheet 7 is provided with a motion buckle 704, which is engaged with the motion card slot 210 of the main body 2 to guide the forward and backward movement and prevent the crystal compression sheet 7 from falling out. The front end of the crystal compression sheet 7 is provided with a crystal compression tongue 705. Before use, the crystal compression tongue 705 is always in the crystal pre-installed part 201 of the main body 2 to pre-fix the intraocular lens 8.
[0040] like Fig.11 The figure shows a schematic diagram of the structure of a crystal tablet pressing rotating handle of an intraocular lens pre-installed pusher provided by the utility model. A handle 901 is provided at the front end of the crystal tablet pressing rotating handle 9 to facilitate the doctor's operation. A connecting buckle 902 is provided at the rear end of the crystal tablet pressing rotating handle 9 to cooperate with the anti-slip groove 209 of the main body 2 to prevent the tablet from slipping out during rotation and affecting the motion transmission. A gear tooth 903 is provided between the crystal tablet pressing rotating handle 9 and the connecting buckle 902. The gear tooth 903 is meshed with the crystal tablet pressing rack 703. By rotating the crystal tablet pressing rotating handle 9, the crystal tablet pressing 7 is driven to move forward and backward, so that the crystal tablet pressing tongue 705 always pre-fixes the intraocular lens 8, so that the intraocular lens 8 moves into the introduction head 3 according to the set direction. The crystal tablet pressing rotating handle 9 is provided with a connecting shaft 904.
[0041] like Fig.12The figure shows a schematic diagram of the structure of a rotating handle cover of an intraocular lens pre-installed injector provided by the utility model. The rear end of the rotating handle cover 10 is provided with a forward stop surface 1001, which cooperates with the forward stop surface 505 of the push rod 5 to prevent the push rod 5 from being over-pushed. The front end of the rotating handle cover 10 is provided with a backward stop surface 1004, which cooperates with the backward stop surface 506 of the push rod 5 to prevent the push rod 5 from detaching from the main body 2. The rotating handle cover 10 is provided with a rotating shaft hole 1002 at the axial position, which cooperates with the rotating handle rotating connecting shaft 104 to allow the rotating handle 1 to rotate freely around the rotating connecting shaft 104. The rear end of the rotating shaft hole 1002 is provided with a rotating handle guide groove 1003, which is used to guide the rotating handle 1 to penetrate into the rotating handle cover 10 for easy installation. Two symmetrical connecting claws 1005 are provided on both sides of the rotating handle guide groove 1003, which are connected with the two symmetrical connecting grooves 207 of the main body 2 to fix the rotating handle cover 10, ensure the stable transmission of the rotating handle 1 and the push rod 5, and ensure the push effect.
[0042] like Figure 7 The figure shows a schematic diagram of the crystal tablet pressing buckle structure of an intraocular lens pre-installed pusher provided by the utility model. The crystal tablet pressing buckle 4 is provided with a crystal tablet pressing rotating handle insertion hole 401, and the handle 901 of the crystal tablet pressing rotating handle 9 is inserted into the crystal tablet pressing rotating handle insertion hole 401, so that a part of the handle 901 is exposed on the surface, which is convenient for the operator to rotate. The middle part of the crystal tablet pressing buckle 4 is provided with a moving card slot 2 402, and the axis hole formed by the rotation fixing groove 208 of the main body 2 and the moving card slot 2 402 of the crystal tablet pressing buckle 4 is matched and connected with the connecting shaft 904 of the crystal tablet pressing rotating handle 9, so that the crystal tablet pressing rotating handle 9 can rotate freely in this axis hole, and two symmetrical connecting claws 1 403 are respectively provided on both sides of the moving card slot 2 402, which are matched and connected with the two left-right symmetrical connecting card slots 1 205 of the main body 2 to fix the crystal tablet pressing buckle 4, prevent the crystal tablet pressing 7 from falling off, and ensure that the crystal tablet pressing 7 moves in the designed trajectory.
[0043] Assembly process of the utility model:
[0044] The push rod 5 and the push needle 6 are connected by a snap-fit connection so that they cannot rotate; the above components are inserted into the main body 2; the rotating handle cover 10 is snapped into the main body 2; the rotating handle 1 and the push rod 5 are combined in the form of a worm and a gear, and the rotating connecting shaft 104 of the rotating handle 1 is matched with the rotating shaft hole 1002 of the rotating handle cover 10 so that the rotating handle 1 can rotate freely; the lens pressing tablet 7 is matched with the main body 2 so that it can move back and forth; the lens pressing tablet rotating handle 9 and the lens pressing tablet buckle 4 are pre-installed on the above components; the artificial lens 8 is placed upside down in the lens pre-installation part 201 of the main body 2; the introduction head 3 is inserted into the main body 2 to complete the assembly.
[0045] The working principle of the utility model is:
[0046] Inject the viscoelastic agent into the introduction head 3 through the injection hole of the introduction head; manually rotate the lens pressing sheet rotating handle 9 to drive the lens pressing sheet 7 to pre-press and pre-push the artificial lens 8; manually rotate the pushing needle 6 to move forward; the pushing needle 6 moves forward to push the artificial lens 8 through the introduction head 3, completing the pushing of the artificial lens 8.
[0047] The utility model adopts a rotating gear rack push injection method to pre-press the artificial lens 8. The gear rack transmission has high stability and can effectively prevent lens damage. The worm rack method is used for transmission push injection, which further improves the transmission stability. The utility model is pre-installed. The lens is pre-installed in the sterile workshop of the factory, 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 lens, reduces the doctor's workload, and also reduces the probability of the lens being crushed and flowing into the patient's body when the lens is loaded into the instrument.
[0048] 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 pusher, characterized in that: The invention comprises a rotating handle, a main body, an introduction head, a crystal compression tablet buckle, an injection rod, an injection needle, a crystal compression tablet, an artificial lens, a crystal compression tablet rotating handle and a rotating handle cover, wherein the rear end of the main body is connected with the rotating handle through a buckle slot, the inner cavity at the rear end of the main body is provided with an injection rod, the injection rod and the rotating handle are connected through a worm gear rack transmission, the injection rod is driven by rotating the rotating handle to move the injection rod back and forth in the inner cavity of the main body, the front end of the injection rod is connected with the injection needle through a buckle slot, a rotating handle cover is provided at the lower side of the injection rod, the rotating handle cover is fixedly connected to the main body through the buckle slot, the rotating handle is inserted into the rotating handle cover, the front end of the main body is connected with the introduction head through the 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 compression tablet for pre-pressing the artificial lens, the upper side of the crystal compression tablet is connected with the crystal compression tablet rotating handle through a gear rack transmission, the upper side of the crystal compression tablet rotating handle is provided with a crystal compression tablet buckle, and the crystal compression tablet rotating handle is fixedly connected to the main body through the buckle slot.
2. The pre-assembled intraocular lens injector according to claim 1, characterized in that: The rear side of the crystal pre-installed part at the front end of the main body is provided with two symmetrical guide head buckles and an anti-foolproof groove, the rear ends of the guide head buckle and the anti-foolproof groove are provided with a crystal pressing piece stop surface, the rear end of the crystal pressing piece stop surface is provided with two left-right symmetrical connecting card slots 1, the rear ends of the two left-right symmetrical connecting card slots 1 are provided with left-right symmetrical rotation fixing grooves, the inner side of the left rotation fixing groove is provided with an anti-slip groove, a moving card slot 1 is provided between the two symmetrical rotation fixing grooves, the rear end of the main body is provided with a rotating handle connecting buckle, the inner cavity of the rear end of the main body is provided with an anti-rotation groove, and the front end of the rotating handle connecting buckle is provided with two symmetrical connecting card slots 2.
3. The pre-assembled intraocular lens injector according to claim 2, characterized in that: A rotating connecting column is provided on the inner side of the rotating handle, a worm gear is provided on the rotating connecting column, a rotating connecting shaft is provided at the front end of the rotating connecting column, a rotating part is provided on the outer side of the rotating handle, an anti-slip groove is provided on the outer side of the rotating part, two symmetrical connecting slot front ends and a connecting slot rear end are provided on the inner side of the rotating part, a main body connecting slot is provided between the front end of the connecting slot and the rear end of the connecting slot, the front end of the connecting slot is sloped, and is provided with a connecting slot front end head and a connecting slot front end tail, the diameter of the connecting slot front end tail is larger than the connecting slot front end head, the diameter of the connecting slot front end tail and the connecting slot rear end are the same, both of which are smaller than the diameter of the rotating handle connecting buckle of the main body, and the rotating handle connecting buckle of the main body and the connecting slot front end are inserted into the main body connecting slot through interference fitting.
4. The pre-assembled intraocular lens injector according to claim 3, characterized in that: The middle part of the push rod is provided with a rack tooth, which is meshed with the worm teeth of the rotating handle, and the push rod is driven to move forward and backward by rotating the rotating handle. An anti-rotation guide groove is provided on the opposite side of the push rod, which is coordinated and connected with the anti-rotation groove of the main body to prevent the push rod from rotating and guide the push rod to move forward and backward. The front end of the push rod is provided with a push needle clamping groove and a push rod connection anti-rotation structure. The starting end and the tail end of the rack tooth of the push rod are respectively provided with a forward end surface 1 and a backward end surface 1, and the rear end of the push rod is provided with a rotating handle anti-sway transmission groove.
5. The pre-assembled intraocular lens injector according to claim 4, characterized in that: The push needle is provided with a push rod buckle and a push rod anti-rotation platform. The push rod buckle is connected with the push needle clamping groove of the push rod, and the push rod anti-rotation platform is connected with the push rod connection anti-rotation structure of the push rod.
6. The pre-assembled intraocular lens injector according to claim 5, characterized in that: The introduction head is provided with an automatically folding asymmetric inner cavity, which can fold the sheet-like artificial lens into a smaller ball and push it into the eye. The rear end of the introduction head is provided with an anti-fool platform and two symmetrical main body slots. The anti-fool platform cooperates with the anti-fool slot of the main body, and the main body slot cooperates with the introduction head buckle to fix the introduction head on the main body.
7. The pre-assembled intraocular lens injector according to claim 6, characterized in that: A stop surface is provided at the tail end of the crystal press. When the crystal press is pushed to an appropriate position, the stop surface contacts the stop surface of the crystal press of the main body to prevent the artificial lens from continuing to move forward. A guide surface is provided at the front end of the upper side of the crystal press. A rack is provided on the upper side of the guide surface. A motion buckle is provided in the middle part of the lower side of the crystal press, which is engaged with a motion slot of the main body to guide the forward and backward movement. A crystal press tongue is provided at the front end of the crystal press.
8. The pre-assembled intraocular lens injector according to claim 7, characterized in that: A handle is provided at the front end of the crystal pressing rotating handle, and a connecting buckle is provided at the rear end of the crystal pressing rotating handle, which cooperates with the anti-slip groove of the main body. Gear teeth are provided between the crystal pressing rotating handle and the connecting buckle, and the gear teeth are engaged with the crystal pressing rack. The crystal pressing rotating handle is rotated to drive the crystal pressing piece to move back and forth, so that the crystal pressing tongue always pre-fixes the artificial lens, and the artificial lens moves into the introduction head according to the set direction. The crystal pressing rotating handle is provided with a connecting shaft.
9. The pre-assembled intraocular lens injector according to claim 8, characterized in that: The rear end of the rotating handle cover is provided with two forward end surfaces, which cooperate with the forward end surface of the push rod to stop. The front end of the rotating handle cover is provided with two backward end surfaces, which cooperate with the backward end surface of the push rod to stop. The axial position of the rotating handle cover is provided with a rotating shaft hole, which cooperates with the rotating connecting shaft of the rotating handle so that the rotating handle can rotate freely around the rotating connecting shaft. The rear end of the rotating shaft hole is provided with a rotating handle guide groove for guiding the rotating handle to pass into the rotating handle cover. Two symmetrical connecting claws are provided on each side of the rotating handle guide groove, which cooperate with the two symmetrical connecting grooves of the main body to fix the rotating handle cover.
10. The pre-assembled intraocular lens injector according to claim 9, characterized in that: The crystal press buckle is provided with a crystal press rotating handle insertion hole, and the handle of the crystal press rotating handle is inserted into the crystal press rotating handle insertion hole so that a part of the handle is exposed on the surface. A motion slot 2 is provided in the middle of the crystal press buckle. The axial hole formed by the rotation fixing slot of the main body and the motion slot 2 of the crystal press buckle is matched and connected with the connecting shaft of the crystal press rotating handle so that the crystal press rotating handle can rotate freely in this axial hole. Two symmetrical connecting claws 1 are provided on both sides of the motion slot 2, which are matched and connected with the two left-right symmetrical connecting slots 1 of the main body to fix the crystal press buckle.