Intraocular lens implanting device

Abstract

The utility model provides an intraocular lens implanting device capable of realizing a push-in operation mode, which is simple in structure, convenient to install and operate, low in cost and favorable for improving the adaptability of products to the market. In order to solve the technical problem, the utility model is realized through the following technical scheme: the intraocular lens implanting device comprises an outer tube which is provided with an intraocular lens bearing part for bearing an intraocular lens; the implantation head is connected with the outer tube and is provided with an inner cavity channel through which the artificial lens deforms and passes; the injection part can move in the outer tube and is used for moving the intraocular lens out of the intraocular lens bearing part and pushing out the intraocular lens through the inner cavity channel of the implanting head; the cover plate and the implantation head are formed in a split mode, and the cover plate covers the artificial lens located on the artificial lens bearing part.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and in particular relates to an artificial lens implantation device. Background Art

[0002] Cataract is one of the eye diseases with the highest blindness rate in the world. So far, there is no effective drug that can inhibit the formation and development of cataracts. Surgery is the only effective treatment method that can restore the patient's vision. In cataract surgery, phacoemulsification is widely used to remove the cloudy natural lens, and then an artificial lens is implanted in the eye to replace the original lens, so that external objects are focused and imaged on the retina, which can achieve the effect of restoring vision.

[0003] An intraocular lens is a special lens made of artificial synthetic materials, usually consisting of a circular optical part in the center and a peripheral support loop. Soft intraocular lenses made of flexible materials such as silicone elastomers, hydrogels, and soft acrylics can be folded or curled to reduce their area and implanted into the eye through a smaller incision (usually 2-3 mm). They are also often called foldable intraocular lenses. This folded or curled intraocular lens can automatically unfold after entering the eye.

[0004] In order to successfully implant these foldable artificial lenses into the eye clinically, various special implant devices have been developed. Implant devices can be divided into two types according to their materials: metal and polymer. Metal products are gradually being replaced by disposable polymer products due to factors such as high processing costs, difficult maintenance, and high risk of secondary infection in patients when reused.

[0005] The implant device is operated in a push-in manner and has the following characteristics: the doctor holds the implant device with his index and middle fingers and applies a force to the push rod with his thumb. The front end of the push rod contacts the artificial lens in the inner cavity of the implant device and transmits the force to the artificial lens. The artificial lens overcomes the friction and other resistances between itself and the inner cavity and moves forward along the axis of the inner cavity until it is completely pushed out and implanted in the human eye.

[0006] The existing push-in implant device (such as Patent Document 1) has a relatively complex structure and high manufacturing cost, which is not conducive to market promotion.

[0007] Patent document 1: CN214967591U. Utility Model Content

[0008] Based on the above deficiencies of the prior art, the technical problem solved by the present invention is to provide an artificial lens implantation device capable of realizing a push-in operation mode, which has a simple structure and low cost, and is conducive to improving the adaptability of the product to the market.

[0009] In order to solve the above technical problems, the utility model is implemented through the following technical solutions: an artificial lens implantation device includes an outer tube, which has an artificial lens bearing part for bearing an artificial lens; an implantation head, which is connected to the outer tube and has an inner cavity for the artificial lens to deform and pass through; a pushing component, which can move in the outer tube and is used to move the artificial lens out of the artificial lens bearing part and push it out through the inner cavity of the implantation head; a cover plate, which is formed separately from the implantation head and covers the artificial lens located on the artificial lens bearing part.

[0010] With the above structure, the whole implanter is composed of an implant head, an outer tube and a push-in component, with few components and a relatively simple structure. The implant head is detachably connected to the outer tube, which is easy to install. The push-in component moves in the outer tube in a manner that it can be pushed forward in the outer tube by an operator, thereby pushing the artificial lens out of the implant head and implanting it into the eye. The pre-installed artificial lens implanter only needs a single push-in action to complete the implantation operation of the artificial lens, and the push-in operation is convenient. After reducing the number of assembled components, the utility model not only improves the push-in stability, but also reduces the number of molds, reduces the mold cost, and thus shortens the product development cycle.

[0011] In addition, by adopting the above structure, the implant head and the outer tube can be connected first, the artificial lens can be correctly placed, and then the cover plate can be covered, so as to ensure the correct installation of the artificial lens. In addition, the installation state of the artificial lens can be observed by opening the cover plate without disassembling the implant head and the outer tube, whether the artificial lens is placed in place, and the disassembly and installation of the implant head and the outer tube are convenient.

[0012] Furthermore, with the above structure, since the cover plate and the implant head are formed separately, for example, compared with a method in which the two are connected by an integral hinge, the structure can be simplified and the manufacturing cost can be reduced.

[0013] As a possible implementation manner, one of the implant head and the outer tube has a guide groove extending along the axial direction, and the other has a guide protrusion sliding into the guide groove along the axial direction.

[0014] With the above structure, the relative movement of the implant head and the outer tube can be limited in a direction intersecting the axial direction through the cooperation of the guide groove and the guide protrusion, thereby achieving the connection between the two in a direction intersecting the axial direction.

[0015] As a possible implementation, one of the cover plate and the implant head has a limiting groove opening, and the other has a limiting protrusion, and the limiting protrusion is inserted into the limiting groove opening from a first direction intersecting the axial direction.

[0016] By adopting the above structure, the cover plate and the implant head can be connected in the axial direction through the cooperation of the limiting protrusion and the limiting groove opening.

[0017] As a possible implementation, one of the outer tube and the cover plate has a limit platform, and the other has a locking groove, and the limit platform is inserted into the locking groove from a second direction intersecting the axial direction, wherein the second direction is different from the first direction.

[0018] With the above structure, the outer tube and the cover plate can be connected in the axial direction and in the first direction through the cooperation of the positioning groove and the limiting platform.

[0019] As a possible implementation manner, the positioning groove and the limiting protrusion overlap in axial position.

[0020] With the above structure, the positioning groove and the limiting protrusion overlap in the axial direction, thereby making the structure compact.

[0021] As a possible implementation manner, both sides of the limiting groove opening in the axial direction are provided with the guide grooves, and the limiting groove opening is located on the connecting line of the guide grooves on both sides.

[0022] With the above structure, since there are guide grooves on both sides of the limiting groove opening, that is, the guide grooves and the guide protrusions are connected on both sides of the limiting groove opening, reliable connection and fixation can be achieved.

[0023] As a possible implementation, the guide protrusion includes a first guide protrusion and a second guide protrusion, and there is a gap between the first guide protrusion and the second guide protrusion, which respectively cooperate with the guide grooves located on both sides of the limiting groove opening.

[0024] As a possible implementation, from the perspective of axial position, the limit platform is located between the first guide protrusion and the second guide protrusion.

[0025] Furthermore, the limiting platform is staggered with the first guide protrusion and the second guide protrusion in a direction intersecting the axial direction.

[0026] As a possible implementation manner, the limiting protrusion is inserted into a gap between the first guide protrusion and the second guide protrusion.

[0027] As a possible implementation manner, the first direction is an up-down direction.

[0028] As a possible implementation, the top surface of the inner cavity of the implant head has a first downward pressing rib extending inwardly thereof, and the first downward pressing rib is used to limit the upward movement of the intraocular lens.

[0029] As a possible implementation manner, a second downward pressing rib protruding downward is provided on the inner wall surface of the cover plate, and the second downward pressing rib is used to limit the upward movement of the artificial lens.

[0030] By adopting the above structure, a second downward pressure rib is formed on an independent cover plate. For example, compared with the method of forming the second downward pressure rib on an integrated implant head (it can also be said that the implant head and the cover plate of the utility model are formed as one body), it can be avoided that when the implant head is inserted axially and externally, the second downward pressure rib rubs against the artificial lens, causing the artificial lens to move in position and affecting the quality of the operation.

[0031] As a possible implementation manner, a plurality of the second pressing ribs are provided, and the plurality of the second pressing ribs are arranged along the left-right direction.

[0032] As a possible implementation manner, a first inclined surface is formed at a rear end of at least one of the plurality of second pressing ribs.

[0033] As a possible implementation manner, a first vertical surface is formed at the rear end of other second pressing ribs among the plurality of second pressing ribs.

[0034] Taking into account the position of the haptic of the artificial lens, a first inclined surface may be formed at the rear end of one second pressing rib, and a first vertical surface may be formed at the rear end of the other second pressing rib, so that the artificial lens can be well handled.

[0035] As a possible implementation manner, a third downward pressure rib protruding downward is provided on the inner wall surface of the cover plate, and the third downward pressure rib is used to limit the upward movement of the injection push component.

[0036] As a possible implementation, the push injection component is provided with an elastic stop block, and the outer tube is provided with a stop groove for engaging the elastic stop block, and the stop groove is used to limit the push injection component from moving backward relative to the outer tube.

[0037] As a possible implementation, the rear surface of the elastic stop block has a second vertical surface, and the front surface has a second inclined surface.

[0038] As a possible implementation manner, the second vertical surface is in surface contact with the stop groove, and the second inclined surface is in line contact with the stop groove.

[0039] With the above structure, the second inclined surface is in linear contact with the stop groove, thereby reducing the resistance of the push injection component; and the second vertical surface is in surface contact with the stop groove, thereby reliably limiting the backward movement of the push injection component relative to the outer tube.

[0040] As a possible implementation, the rear portion of the implant head has a connecting portion extending axially, the upper side of the connecting portion is open and connected to the intraocular lens bearing portion, and the cover plate covers the upper portion of the connecting portion. In other words, the cover plate and the connecting portion are combined to form a circumferentially closed structure.

[0041] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following is a detailed description in combination with the preferred embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0043] Figure 1 It is an exploded schematic diagram of the intraocular lens implantation device of the present invention;

[0044] Figure 2 is a schematic structural diagram of the connection portion of the implant head;

[0045] Figure 3 It is a schematic diagram of the structure of the intraocular lens bearing part of the outer tube;

[0046] Figure 4 It is a structural schematic diagram of the clamping slot of the cover plate;

[0047] Figure 5 A schematic diagram of the connection between the connecting portion of the implant head and the intraocular lens bearing portion of the outer tube;

[0048] Figure 6 It is a schematic diagram of the structure of the first downward pressure rib of the implant head;

[0049] Figure 7 It is a schematic diagram of the structure of the lower pressing rib of the cover plate;

[0050] Figure 8 Schematic diagram of the structure of an elastic stop block, wherein (a) is a side view of the elastic stop block, and (b) is a partial enlarged view of the elastic stop block;

[0051] Fig. 9 Schematic diagram of the matching relationship between the push rod and the outer tube;

[0052] Fig.10 Schematic diagram of injecting viscoelastic into the implant head;

[0053] Fig.11 A schematic diagram of the action of removing the implanter;

[0054] Fig.12 is a schematic diagram of a bolus injector;

[0055] Fig.13 Schematic diagram of the introduction of an intraocular lens.

[0056] Description of reference numerals:

[0057] 10. Implant head; 11. Connecting part; 111. Guide groove; 111a. Limit groove opening; 12. First downward pressure rib; 20. Outer tube; 21. Artificial lens bearing part; 211. Guide protrusion; 212. Limit platform; 22. Stop groove; 30. Push pin; 40. Push rod; 50. Artificial lens; 60. Cover plate; 61. Positioning groove; 62. Second downward pressure rib; 63. Push pin downward pressure rib (third downward pressure rib); 70. Elastic stop block; 71. Vertical surface; 72. Inclined surface; 80. Limit seat. DETAILED DESCRIPTION

[0058] The following is a detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings, which is a part of this specification and illustrates the principles of the present invention through examples. Other aspects, features and advantages of the present invention will become clear from the detailed description. In the referenced drawings, the same or similar components in different figures are represented by the same reference numerals.

[0059] The "front and back" in the present invention refers to the front and back direction in the push injection direction, that is, the front and back direction in the moving direction of the push injection component.

[0060] like Figures 1 to 3 , Figures 8 to 13 As shown, the intraocular lens implantation device described in this embodiment includes an implanter and a limit seat 80. The implanter is mainly composed of an implant head 10, an outer tube 20, a push pin 30, and a push rod 40. The outer tube 20 is roughly cylindrical and has an intraocular lens bearing portion 21 (whereby "bearing" defines the up and down direction) disposed outwardly along its axial direction at its end (the end close to the implant head 10 or the end that matches the implant head 10); the implant head 10 has an inner cavity for the intraocular lens 50 to pass through, and the implant head 10 is detachably connected to the end of the intraocular lens bearing portion 21 of the outer tube 20. The push pin 30 and the push rod 40 constitute a push injection component, which can move relatively in the hollow cavity of the outer tube 20 to remove the intraocular lens 50 from the intraocular lens bearing portion 21 and push it out through the inner cavity of the implant head 10 to be implanted into the human eye.

[0061] Operating handles 23 are provided on both sides of the outer tube 20 near the push rod 40. When performing the pushing operation, the operator usually uses the index finger and middle finger to hook the operating handles 23 located on the opposite sides of the outer tube 20 respectively, and pushes the push rod 40 forward with the thumb to move the push needle 30 in the pushing direction.

[0062] The tail end of the push pin 30 is connected to the push rod 40 through a snap-fit ​​structure. When implanting the artificial lens, the operator pushes the push rod 40. Driven by the push rod 40, the front end of the push pin 30 directly contacts the artificial lens 50 and pushes the artificial lens 50 forward, thereby pushing the artificial lens 50 out of the inner cavity of the implant head 10.

[0063] In addition, the stopper seat 80 has a stopper pin, which is inserted into the implanter through the pin hole on the outer tube 20 of the implanter and is located between the optical part of the intraocular lens and the front end of the front support haptic to limit the movement of the intraocular lens forward. Therefore, before performing the push injection operation, the operator needs to separate the stopper seat 80 from the implanter to release the stopper pin from limiting the intraocular lens.

[0064] The outer tube 20 connects the implant head 10 and the push injection component together and serves as a passage for the push injection component to run.

[0065] During surgery, the intraocular lens implantation device of this embodiment can be pushed in with one hand without affecting other operations performed by the other hand.

[0066] like Figure 2 As shown, the implant head 10 of this embodiment has a connecting portion 11 extending along its axial direction for connection with the artificial lens bearing portion 21, and the upper side of the connecting portion 11 is open. After the connecting portion 11 and the artificial lens bearing portion 21 are connected, the outer tube 20 and the implant head 10 are locked together by the cover plate 60, thereby achieving a reliable connection between the implant head 10, the cover plate 60 and the outer tube 20.

[0067] Specifically, guide grooves 111 parallel to the axial direction of the implant head 10 are provided on both sides of the connection part 11 of the implant head 10, and the guide grooves 111 on both sides are relatively open, and the rear ends are open. Correspondingly, guide protrusions 211 that can slide into the guide grooves 111 from the rear are provided on both sides of the artificial lens bearing part 21. When the implant head 10 and the outer tube 20 are installed, the guide protrusions 211 are axially aligned with the guide grooves 111 and then the guide protrusions 211 are slid into the guide grooves 111, so that the artificial lens bearing part 21 of the outer tube 20 is inserted into the implant head 10. The outer tube 20 and the implant head 10 are connected in the axial direction through the sliding connection between the guide protrusions 211 and the guide grooves 111, and the movement of the two in the direction perpendicular to the axial direction is restricted, that is, the implant head 10 can move in the axial direction relative to the outer tube 20, but cannot move relative to each other in the up-down direction and the front-back direction.

[0068] The two sides of the intraocular lens bearing part 21 are symmetrically provided with stoppers 212 with a size of 0.7 mm in height and 3.0 mm in width. The cover plate 60 is a component formed independently of the implant head 10 and the outer tube 20 (i.e., formed separately), and is connected to the implant head 10 and the outer tube 20 through a snap-fit ​​structure. The cover plate 60 is provided with a snap-fit ​​groove 61 that is engaged with the stopper 212, and the snap-fit ​​groove 61 is a rectangular through groove with a size of 0.7 mm in height and 3.0 mm in width. The cover plate 60 is connected to the artificial lens bearing part 21 of the outer tube 20 by engaging the limit platform 212 into the locking groove 61. At the same time, after the cover plate 60 is installed on the artificial lens bearing part 21 of the outer tube 20, the part of the cover plate 60 used to form the locking groove 61 (it can also refer to the wall part of the locking groove 61) is just placed in the limit groove opening 111a described below, which also serves to limit the sliding of the guide protrusion 211 in the guide groove 111, so that the implant head 10 cannot move axially relative to the outer tube 20, thereby locking and fixing the outer tube 20 and the implant head 10 together.

[0069] Specifically, a protrusion 64 is formed on the lower surface of the cover plate 60. When the positioning groove 61 and the limiting platform 212 are engaged, the protrusion 64 is embedded in the limiting groove opening 111a, preventing the connecting portion 11 of the implant head 10 from moving in the axial direction, thereby axially locking the outer tube 20 and the implant head 10. In addition, in this embodiment, the positioning groove 61 and the protrusion 64 overlap in the axial direction, which can make the structure compact.

[0070] When assembling the implant device, after the implant head 10 and the outer tube 20 are plugged in, the artificial lens 50 is placed on the artificial lens bearing part 21, and then the cover plate 60 is correctly placed and pressed down, thereby completing the occlusal installation of the positioning groove 61 and the limit platform 212, and then completing the assembly of the implant device. In the present invention, the connecting part 11 of the implant head 10 and the cover plate 60 constitute the rear end part of the implant head 10, and the artificial lens bearing part 21 of the outer tube 20 is located in the rear end part.

[0071] In addition, if Figure 2 As shown, the two sides of the connection part 11 of the implant head 10 are further provided with a limit groove opening 111a. More specifically, the limit groove opening 111a is formed in the shape of a notch on the upper surface of the connection part 11, and is located in the middle part of the guide groove 111, dividing the guide groove 111 into two parts, front and back. After the guide protrusion 211 of the artificial lens bearing part 21 slides into the guide groove 111 of the connection part 11, the limit platform 212 is located above the limit groove opening 111a, and a certain space can be left between the two, so as to reserve enough space for the subsequent downward pressing of the cover plate 60.

[0072] When the cover plate 60 is installed on the artificial lens bearing part 21 of the outer tube 20, the locking groove 61 and the limiting platform 212 form a bite connection (or a snap connection), and the part of the cover plate 60 used to form the locking groove 61 (it may also refer to the wall part of the locking groove 61) is just placed in the limiting groove opening 111a (or in the reserved space formed by the limiting platform 212 and the limiting groove opening 111a mentioned above).

[0073] More specifically, if Figure 3 As shown, the limit platform 212 and the guide protrusion 211 are staggered in the up and down directions. The guide protrusion 211 can also be composed of a first guide protrusion and a second guide protrusion that are disconnected and arranged on the same straight line. The limit platform 212 is located above the gap between the first guide protrusion and the second guide protrusion, which can further reserve sufficient space for pressing down the cover plate 60.

[0074] like Fig.10 and Fig.11 As shown, the top surface of the inner cavity of the implant head 10 has a first downward pressing rib 12 extending inwardly thereof, and the inner wall surface of the cover plate 60 is provided with a second downward pressing rib 62 protruding in the direction of the intraocular lens bearing portion 21, and the first downward pressing rib 12 and the second downward pressing rib 62 are used to limit the upward movement of the intraocular lens 50 in the inner cavity of the implant head 10. The inner wall surface of the cover plate 60 is also provided with a push pin downward pressing rib 63 protruding in the direction of the intraocular lens bearing portion 21, which is used to limit the push pin 30 of the push injection component from moving upward in the inner cavity of the implant head 10.

[0075] Specifically, one end (rear end) of the first downward pressing rib 12 is a vertical surface, and the other end (front end) thereof is an inclined surface with a certain angle, so as to be suitable for the gradual tapering of the inner cavity of the implant head 10. Two second downward pressing ribs 62 and one push pin downward pressing rib 63 are provided on the cover plate 60, wherein the front and rear ends of one second downward pressing rib 62 are both vertical surfaces, and one end (front end) of the other second downward pressing rib 62 is a vertical surface, and the other end (rear end) is an inclined surface with a certain angle. The push pin downward pressing rib 63 is located behind the two second downward pressing ribs 62 and between the extension lines of the two second downward pressing ribs 62, so as to facilitate the push pin 30 to push forward and contact the artificial lens 50. The front and rear ends of the push pin downward pressing rib 63 are vertical surfaces, and the left and right sides are inclined surfaces with a certain angle. The overall shape thereof is a trapezoidal structure. With this structure, the push pin downward pressing rib 63 can more reliably apply a downward force to the push pin 30, so that the push pin 30 can move while maintaining contact with the artificial lens bearing portion 21.

[0076] like Figure 8 and Fig. 9As shown, the end of the push rod 40 near the outer tube 20 is provided with two symmetrically arranged elastic stop blocks 70 protruding from the circumferential surface of the push rod 40, and the tail of the outer tube 20 is provided with two stop grooves 22 for engaging the two elastic stop blocks 70, and the stop grooves 22 are used to limit the push rod 40 from moving backward relative to the outer tube 20. One side (rear surface) of the elastic stop block 70 is a vertical surface 71, and the other side (front surface) thereof is an inclined surface 72 with a certain angle, and the inclined surface gradually extends backward in a direction away from the center of the push rod 40. The vertical surface of the elastic stop block 70 is in surface contact with the side wall of the tail of the stop groove 22, and its inclined surface is in line contact with the ridgeline of the stop groove 22. When the push rod 40 moves forward relative to the outer tube 20, the elastic stop block 70 is elastically deformed, and its inclined surface slides along the ridgeline of the stop groove 22, so that the elastic stop block 70 enters the hollow cavity of the outer tube 20 and moves forward in the hollow cavity. The elastic stop block 70 can be inserted into the stop groove 22 and is configured to be unable to be disengaged from the stop groove 22 by moving backward but can be disengaged from the stop groove 22 by moving forward.

[0077] like Fig.13 As shown, in the initial position, the two elastic stop blocks 70 are respectively located in the two stop grooves 22, and the vertical surface of the elastic stop block 70 is in surface contact with the side wall of the tail of the stop groove, which can limit the push rod 40 from moving axially backward, and its inclined surface is in line contact with the ridgeline of the stop groove 22. When the push rod 40 moves axially forward, the elastic stop block 70 is elastically deformed, and its inclined surface slides along the ridgeline of the stop groove 22, so that the elastic stop block 70 enters the outer tube 20 and moves forward. In this way, when the elastic stop block 70 is stuck in the stop groove 22, it can no longer move backward and disengage from the stop groove 22, but can move forward and disengage from the stop groove 22 by elastic deformation.

[0078] like Fig.13 As shown, the intraocular lens 50 in this embodiment has a substantially circular optical part and two front and rear haptics (support parts). When mounted on the intraocular lens support part, the front haptic can extend from the right side of the optical part and the rear haptic can extend from the left side of the optical part. Figures 1 to 13 Combined with the description of the above structural features, the method of using the artificial lens implant device of the present invention is briefly described:

[0079] 1. The intraocular lens 50 is pre-placed at the connection between the implant head 10 and the outer tube 20 (the intraocular lens bearing portion 21 of the outer tube 20 for bearing the intraocular lens), and an appropriate amount of viscoelastic agent is injected into the implant head 10 through the injection hole so that the viscoelastic agent fills the entire inner cavity of the implant head 10. Fig.10 shown.

[0080] 2. Remove the implanter from the limiting seat 80. Fig.11 shown.

[0081] 3. Push the push rod 40 to fold the front and rear haptics of the intraocular lens and curl the optical part, such as Fig.12 shown.

[0082] 4. Push the push rod 40 to the bottom, and then implant the artificial lens 50 into the eye through the surgical incision. Fig.13 shown.

[0083] The above is only a preferred implementation of the present utility model, which certainly cannot be used to limit the scope of rights of the present utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and changes can be made without departing from the principle of the present utility model, and these improvements and changes are also regarded as the protection scope of the present utility model.

[0084] In the above embodiment, the implant head 10 has the guide groove 111 and the outer tube 20 has the guide protrusion 211 . However, the guide protrusion may be formed on the implant head 10 and the guide groove may be formed on the outer tube 20 .

[0085] In the above embodiment, the cover plate 60 has the limiting protrusion 64 and the implant head 10 has the limiting groove opening 111 a . However, the limiting groove opening may be formed on the cover plate and the limiting protrusion may be formed on the implant head 10 .

[0086] In the above embodiment, the outer tube 20 has the limiting platform 212 and the cover plate 60 has the locking groove 61 . However, the locking groove may be formed on the outer tube 20 and the limiting platform (protrusion) may be formed on the cover plate 60 .

[0087] In the above embodiment, the limiting protrusion 64 is inserted into the limiting groove opening 111a from above (up and down direction), however, the present invention is not limited to this, and can also be formed so that the limiting protrusion is inserted into the limiting groove opening from other directions (directions intersecting the axial direction).

[0088] In the above embodiment, the limit platform 212 is inserted into the locking groove 61 from the left and right direction perpendicular to the axial and up and down directions (an example of "crossing"), however, the utility model is not limited to this, and can also be formed such that the limit platform 212 is inserted into the locking groove 61 in other directions (a direction crossing the axial direction), but this direction is different from the direction in which the limit protrusion 64 is inserted into the limit groove opening 111a, so as to facilitate fixation.

[0089] In the above embodiment, the locking groove 61 and the limiting protrusion 64 overlap in the axial direction. However, the locking groove 61 and the limiting protrusion 64 may be staggered in the axial direction.

[0090] In the above embodiment, both sides of the limit slot opening 111a in the axial direction have guide slots 111, and the limit slot opening 111a is located on the connecting line of the guide slots 111 on both sides. However, for example, it can also be formed that only one side of the limit slot opening in the axial direction has a guide slot, or the axial positions of the two overlap.

[0091] In addition, in the above embodiment, the push pin 30 and the push rod 40 of the push injection component are connected by a snap-fit ​​structure. However, the present invention is not limited thereto, and the push pin 30 and the push rod 40 may also be formed integrally.

Claims

1. An artificial lens implant device, characterized in that: include: An outer tube (20) having an intraocular lens bearing portion (21) for bearing an intraocular lens; An implant head (10) connected to the outer tube (20) and having an inner cavity for the artificial lens to deform and pass through; A push-in component, which is movable in the outer tube and is used to move the intraocular lens out of the intraocular lens bearing portion and push it out through the inner cavity of the implant head; The cover plate (60) is formed separately from the implant head (10) and covers the artificial lens located on the artificial lens bearing portion (21).

2. The intraocular lens implant device according to claim 1, characterized in that: One of the implant head (10) and the outer tube (20) has a guide groove (111) extending along the axial direction, and the other has a guide protrusion (211) sliding into the guide groove along the axial direction.

3. The intraocular lens implant device according to claim 2, characterized in that: One of the cover plate (60) and the implant head (10) has a limiting groove opening (111a), and the other has a limiting protrusion (64). The limiting protrusion (64) is inserted into the limiting groove opening (111a) from a first direction intersecting the axial direction.

4. The intraocular lens implant device according to claim 3, characterized in that: One of the outer tube (20) and the cover plate (60) has a limiting platform (212), and the other has a locking groove (61), and the limiting platform (212) is inserted into the locking groove (61) from a second direction intersecting the axial direction, wherein the second direction is different from the first direction.

5. The intraocular lens implantation device according to claim 4, characterized in that: The positioning groove (61) and the limiting protrusion (64) overlap in axial position.

6. The intraocular lens implant device according to any one of claims 3 to 5, characterized in that: Both sides of the limiting groove opening (111a) in the axial direction are provided with the guiding grooves (111), and the limiting groove opening (111a) is located on the connecting line of the guiding grooves (111) on both sides.

7. The intraocular lens implant device according to claim 6, characterized in that: The guide protrusion (211) comprises a first guide protrusion and a second guide protrusion, and a gap is provided between the first guide protrusion and the second guide protrusion, respectively cooperating with the guide grooves (111) located on both sides of the limiting groove opening (111a).

8. The intraocular lens implant device according to claim 7, characterized in that: From the perspective of axial position, the limiting platform (212) is located between the first guide protrusion and the second guide protrusion. Furthermore, the limiting platform (212) is staggered with the first guide protrusion and the second guide protrusion in a direction intersecting the axial direction.

9. The intraocular lens implant device according to claim 7, characterized in that: The limiting protrusion (64) is inserted into the gap between the first guide protrusion and the second guide protrusion.

10. The intraocular lens implant device according to any one of claims 3 to 5, characterized in that: The first direction is the up-down direction.

11. The intraocular lens implant device according to any one of claims 1 to 5, characterized in that: The top surface of the inner cavity of the implant head has a first downward pressing rib extending inwardly thereof, and the first downward pressing rib is used to limit the upward movement of the artificial lens.

12. The intraocular lens implant device according to any one of claims 1 to 5, characterized in that: A second downward pressing rib protruding downward is provided on the inner wall surface of the cover plate, and the second downward pressing rib is used to limit the upward movement of the artificial lens.

13. The intraocular lens implant device according to claim 12, characterized in that: A plurality of the second pressing ribs are provided, and the plurality of the second pressing ribs are arranged along the left-right direction.

14. The intraocular lens implant device according to claim 13, characterized in that: A first inclined surface is formed at a rear end of at least one of the plurality of second pressing ribs.

15. The intraocular lens implant device according to claim 14, characterized in that: Among the plurality of second pressing down ribs, except for the second pressing down rib whose rear end is formed with the first inclined surface, the rear ends of the other second pressing down ribs have a first vertical surface formed thereon.

16. The intraocular lens implant device according to any one of claims 1 to 5, characterized in that: A third downward pressing rib protruding downward is provided on the inner wall surface of the cover plate, and the third downward pressing rib is used to limit the upward movement of the injection push component.

17. The intraocular lens implant device according to any one of claims 1 to 5, characterized in that: The push injection component is provided with an elastic stop block (70), and the outer tube is provided with a stop groove (22) for engaging the elastic stop block, and the stop groove is used to limit the push injection component from moving backward relative to the outer tube.

18. The intraocular lens implant device according to claim 17, characterized in that: The rear surface of the elastic stop block has a second vertical surface, and the front surface has a second inclined surface.

19. The intraocular lens implant device according to claim 18, characterized in that: The second vertical surface is in surface contact with the stop groove, and the second inclined surface is in line contact with the stop groove.

20. The intraocular lens implant device according to any one of claims 1 to 5, characterized in that: The rear part of the implant head has a connecting portion (11) extending in the axial direction, the upper side of the connecting portion (11) is open and connected to the artificial lens bearing portion (21), and the cover plate (60) covers the upper part of the connecting portion.

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