Intraocular lens injector and its injection method

Abstract

The present invention relates to an intraocular lens injector and its injection method, belonging to the technical field of medical devices. The injector includes a guiding seat and a pushing rod. The guiding seat includes a piercing section, a guiding section, a feeding section, and a specially-shaped guiding channel which is connected. The specially-shaped guiding channel includes a large straight cavity arranged in a thin shell, a small straight cavity arranged in a cylindrical tube, and a conical cavity arranged in a conical shell. The pushing rod includes a rod body and a clamping forceps arranged at the front end of the rod body. The clamping forceps includes a bottom plate and a left clamping finger and a right clamping finger which are hinged to the bottom plate. Clamping driving fingers are hinged to the ends of the left flat finger and the right clamping finger. A slider is slidably arranged on the bottom plate, a driving wire is arranged on the slider, and a driving mechanism is also arranged on the rod body. The present invention provides an injector that can simultaneously complete the implantation or extraction operation of an intraocular lens, and truly meets the minimally invasive requirements, creating conditions for efficient and high-quality implantation of the lens.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an intraocular lens injector and its injection method. Background Art

[0002] With the in-depth development of ophthalmic technology, an intraocular lens can be used for a lifetime after normal implantation and generally does not need to be replaced. However, in special cases, such as unsatisfactory visual effects, infectious eye diseases, or dislocation of the intraocular lens, the intraocular lens needs to be removed.

[0003] In the prior art, when removing an intraocular lens, the commonly used method is to make a corneal incision, strip the intraocular lens from the capsular bag and place it in the anterior chamber, cut the intraocular lens with scissors through the corneal incision, and then drag the lens out through the corneal incision. Since the diameter of the intraocular lens is larger than the corneal incision, minimally invasive operation cannot be performed, and the lens cannot be removed as a whole at one time during the operation, which may generate free fragments. Secondly, during the process of cutting the intraocular lens with scissors, other structures may be damaged, resulting in bleeding, or the capsular bag may be damaged during the removal of the lens due to adhesion, thereby increasing the difficulty and risk of the operation. There is also a method of using a forceps for implanting the lens to remove the lens, which has defects such as a small opening range, inability to quickly and smoothly clamp, and poor gripping force. Due to the inability to quickly clamp or unstable clamping, the lens needs to be cut into multiple small pieces and removed in multiple times. Therefore, the operation time is long and the efficiency is low.

[0004] In particular, there is no composite operating instrument in the prior art that can both insert and remove, so that the operating instrument has a single function, a complicated operating procedure, a high use cost, and increases the psychological and economic burden on patients.

[0005] Therefore, it is necessary to improve the intraocular lens operating instrument in the prior art to make it have the composite function of inserting or removing, and the clamping is stable and reliable, and the lens implantation or removal operation can be completed under minimally invasive conditions, creating conditions for improving the operation efficiency, safety and reducing the operation cost. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to propose an intraocular lens injector and its injection method. Through optimization and improvement, the implantation or removal operation of the intraocular lens can be independently completed under minimally invasive conditions, increasing the function, reducing the use cost, and improving the operation efficiency, so as to solve the problem of high use cost caused by the single function of the prior art and the need for multiple instruments for implantation or removal operations. Further, through a special clamping structure, the problem of low operation efficiency caused by unstable clamping during removal in the prior art and the need for multiple removals is solved.

[0007] One of the present inventions is achieved through the following technical solutions:

[0008] Intraocular lens transporter, comprising a guiding seat and a pushing rod, wherein the guiding seat includes a piercing section, a guiding section, a feeding section, and a special-shaped guiding channel communicatively arranged in the piercing section, the guiding section, and the feeding section. The piercing section is a cylindrical tube body with an outer diameter less than 2.8 mm, the feeding section is a thin shell, and the guiding section is a conical shell. The special-shaped guiding channel includes a large straight cavity arranged in the thin shell, a small straight cavity arranged in the cylindrical tube body, and a conical cavity arranged in the conical shell. The large straight cavity is a cavity body capable of directly placing an intraocular lens. The conical cavity includes at least two tapers, and the two tapers are smoothly transitioned. The pushing rod includes a rod body and a clamping pliers arranged at the front end of the rod body. The clamping pliers includes a bottom plate and a left clamping finger and a right clamping finger hinged to the bottom plate. Clamping driving fingers are hinged to the ends of the left flat finger and the right clamping finger. A slider is slidably arranged on the bottom plate, and the two clamping driving fingers are hinged to the slider. The slider is made of ferromagnetic material, and an electromagnet for magnetically attracting the slider to perform the operation of opening the clamping fingers is further arranged on the bottom plate. A driving wire for pulling the clamping fingers to perform the clamping operation is arranged on the slider, and a driving mechanism for tensioning the driving wire is further arranged on the rod body.

[0009] Further, the right clamping finger is provided with a clamping groove for embedding the left clamping finger, and the end face of the right clamping finger is a straight plane.

[0010] Further, clamping teeth are arranged on the inner clamping surfaces of the left clamping finger and the right clamping finger.

[0011] Further, the left clamping finger and the right clamping finger are both provided with lighting lamps.

[0012] Further, the lighting lamp includes an axial LED lamp arranged on the end face of the left clamping finger or / and the right clamping finger and a radial LED lamp arranged on the side surface of the left clamping finger or / and the right clamping finger. The radial LED lamp of the left clamping finger and the radial LED lamp of the right clamping finger are arranged oppositely.

[0013] Further, the driving mechanism includes a wire reel rotatably arranged in the rod body and a rotating handle fixed on the wire reel. A limit pin is arranged on the rotating handle, and a limit hole for inserting the limit pin is arranged on the rod body.

[0014] Further, a holding part with a small middle and large ends is arranged outside the guiding seat.

[0015] Further, a power source is arranged in the rod body. The power source is electrically connected to the LED lamp and the electromagnet, and a control switch for operating the power-on operation of the LED lamp and the electromagnet is arranged on the rod body.

[0016] The second aspect of the present invention is achieved by the following technical solutions:

[0017] An intraocular lens transportation method, using the intraocular lens transporter as described above.

[0018] Further, when feeding, the left clamping finger is inserted into the right clamping finger to fix the intraocular lens in the clamping groove and feed it through the special-shaped guiding channel; when taking out, the position of the intraocular lens is determined through the illuminating lamp, the intraocular lens is fixed in the clamping groove, and the intraocular lens is pulled out through the special-shaped guiding channel.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The present invention combines the use of a guiding seat and a pushing rod, sets a special-shaped guiding channel in the guiding seat, and sets a clamping forceps on the pushing rod, so as to realize the taking out and feeding of the intraocular lens, achieving a composite function. And a clamping groove is arranged on the right clamping finger, which can close the left clamping finger. On the one hand, the clamped object is locked and will not easily fall off. On the other hand, a side of the right clamping finger forms a surface independently, which can increase the pushing area of the lens, thus avoiding the situation that the pushing end is too sharp and may damage the lens in the prior art during pushing, and ensuring the safety and reliability of the operation.

[0021] 2. The special-shaped guiding channel of the present invention has multiple taper transitions. On the one hand, the channel naturally transitions from 13 mm to about 2 mm, more smoothly guiding the intraocular lens into the piercing section. On the other hand, the channel will not be too long to affect the accuracy of the operation, so as to ensure the reliability of the operation as much as possible on the premise of realizing the function.

[0022] 3. Through the combined application of the left clamping finger, the right clamping finger, the clamping driving finger, the electromagnet, the slider, the electromagnet, the driving wire, and the driving mechanism, the present invention makes the clamping of the conveyor forceful and the release rapid, thus improving the rapidity and accuracy of the operation and providing convenience for the high-efficiency and simplicity of the operation.

[0023] 4. By setting the axial LED lamp and the radial LED lamp, the present invention can provide illumination from both the axial and radial directions of the conveyor, so that the operating personnel can observe the lens from multiple angles and directions, quickly and efficiently determine the orientation of the lens, and thus adopt a reliable clamping posture, further improving the operation efficiency and the quality of the operation.

[0024] In summary, the present invention provides a conveyor that can simultaneously complete the implantation or extraction operation of the intraocular lens, and indeed follows the minimally invasive requirements, creating conditions for the efficient and high-quality implantation of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall schematic diagram of the present invention;

[0026] Figure 2 is the front view of the guiding seat;

[0027] Figure 3 is the bottom view of the guiding seat;

[0028] Figure 4Cross-sectional view of the guiding seat;

[0029] Figure 5 Cross-sectional view of the pushing rod;

[0030] Figure 6 Front view of the intraocular lens;

[0031] Figure 7 Diagram of the clamping pliers in the closed state;

[0032] Figure 8 Diagram of the clamping pliers in the open state;

[0033] Figure 9 Diagram of the working state of the present invention inside the eye;

[0034] Figure 10 Diagram of the operating state of the present invention when clamping the intraocular lens;

[0035] Figure 11 Diagram of the operating state of the present invention when clamping the intraocular lens into the piercing section;

[0036] Figure 12 Diagram of the operating state of the present invention after clamping the intraocular lens into the piercing section

[0037] Figure 13 Diagram of the operating state of the present invention when clamping the intraocular lens into the guiding section;

[0038] Figure 14 Diagram of the operating state of the present invention when clamping the intraocular lens into the feeding section;

[0039] Figure 15 Diagram of the operating state of the present invention when clamping the intraocular lens and withdrawing it from the guiding seat.

[0040] Explanation of reference numerals:

[0041] 1 - Guiding seat; 2 - Pushing rod; 3 - Piercing section; 4 - Guiding section; 5 - Feeding section; 6 - Special-shaped guiding channel; 7 - Intraocular lens; 8 - Circular disc; 9 - Contact leg; 10 - Rod body; 11 - Clamping pliers; 12 - Left clamping finger; 13 - Right clamping finger; 14 - Clamping driving finger; 15 - Slide block; 16 - Electromagnet; 17 - Driving wire; 18 - Chute; 19 - Wire disc; 20 - Rotating handle; 21 - Limit pin; 22 - Limit hole; 23 - Guiding rod; 24 - Axial LED lamp; 25 - Radial LED lamp; 26 - Clamping groove; 27 - Clamping teeth; 28 - Holding part; 29 - Power supply; 30 - Control switch; 31 - Base plate; 61 - Large flat cavity; 62 - Small flat cavity; 63 - Conical cavity. Detailed implementation manners

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0044] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0045] In the above description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "one side" and "the other side" is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, terms such as "first" and "second" are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0046] In addition, terms such as "identical" do not mean that the components are absolutely identical, but there may be slight differences. The term "perpendicular" merely means that the positional relationship between components is relatively more perpendicular than "parallel", and does not mean that the structure must be completely perpendicular, but may be slightly inclined.

[0047] Such as Figures 1-15As shown in the figure, an embodiment provided by the present invention: an intraocular lens transporter, which includes a guiding seat 1 and a pushing rod 2. The guiding seat includes a piercing section 3, a guiding section 4, a feeding section 5, and a special-shaped guiding channel 6 communicated and arranged in the piercing section, the guiding section and the feeding section. The piercing section enters the posterior chamber of the patient's eye, between the iris and the lens through a minimally invasive incision, and sends the intraocular lens in. According to the minimally invasive requirements, the diameter of the incision is usually 2.8 mm or smaller. The piercing section of this embodiment is a cylindrical tube body with an outer diameter less than 2.8 mm, that is, it can enter the minimally invasive incision. The feeding section is a thin shell, and the guiding section is a conical shell. The special-shaped guiding channel includes a large straight cavity 61 arranged in the thin shell, a small straight cavity 62 arranged in the cylindrical tube body, and a conical cavity 63 arranged in the conical shell. The large straight cavity is a cavity body that can directly place the intraocular lens 7. Usually, the center of the intraocular lens is a circular disc 8, and there are two contact feet 9 on both sides, with a length not greater than 13 mm and a width not greater than 6 mm in the length direction. Therefore, the size of the cavity body of the large straight cavity only needs to be greater than 13X6. In this way, when in use, the intraocular lens can be directly placed. The conical cavity includes at least two tapers. In this embodiment, two tapers are adopted for transition, and the two tapers are smoothly transitioned through an arc-shaped surface, so that the transition is more natural and the length dimension can be effectively shortened. The pushing rod includes a rod body 10 and a clamping pliers 11 arranged at the front end of the rod body. Specifically, the clamping pliers include a bottom plate 31 and a left clamping finger 12 and a right clamping finger 13 that are hinged to the bottom plate. Clamping driving fingers 14 are hinged to the ends of the left flat finger and the right clamping finger. A slider 15 is slidably arranged on the bottom plate, and the two clamping driving fingers are hinged to the slider. The slider is made of ferromagnetic material. An electromagnet 16 for magnetically attracting the slider to open the clamping fingers is also arranged on the bottom plate. A driving wire 17 for pulling the clamping fingers to perform the clamping operation is arranged on the slider. A driving mechanism for tensioning the driving wire is also arranged on the rod body.

[0048] Specifically, a chute 18 is arranged on the bottom plate. After the electromagnet is energized, it generates a magnetic attraction force on the slider. Since the slider is installed on the chute, the slider can only slide on the chute, so that the clamping driving fingers open outwards, thereby driving the two clamping fingers to open outwards, making the clamping pliers in a loose state.

[0049] The driving mechanism of this embodiment includes a wire reel 19 rotatably arranged in the rod body and a rotating handle 20 fixed on the wire reel. A limit pin 21 is arranged on the rotating handle, and a limit hole 22 for inserting the limit pin is arranged on the rod body. The driving wire is wound and fixed inside the wire reel. The rotating handle can drive the wire reel to rotate and drive the wire to be tensioned, so that the clamping fingers are close to each other to form a clamping.

[0050] In this embodiment, the pushing rod further includes a guiding rod 23 which is arranged between the rod body and the clamping pliers. The bottom plate is fixed on the guiding rod. The guiding rod and the clamping pliers have the same size and can pass through the special-shaped guiding channel, so that the clamping pliers can be sent to the affected eye through the special-shaped guiding channel.

[0051] In this embodiment, the left clamping finger is provided with a lighting lamp, and the lighting lamp includes an axial LED lamp 24 arranged on the end face of the left clamping finger and a radial LED lamp 25 arranged on the side face of the left clamping finger.

[0052] In this embodiment, the right clamping finger is also provided with a lighting lamp, and the lighting lamp includes an axial LED lamp arranged on the end face of the right clamping finger and a radial LED lamp arranged on the side face of the right clamping finger.

[0053] Moreover, the radial LED lamp of the left clamping finger and the radial LED lamp of the right clamping finger are arranged oppositely. In this way, when the two radial LED lamps rotate with the clamping fingers, they can form illumination for the front view, thus replacing the axial LED lamp to confirm the crystal.

[0054] By arranging the axial LED lamp and the radial LED lamp, illumination can be provided from two directions, namely the axial direction and the radial direction of the conveyor, so that the surgical staff can observe the crystal from multiple angles and directions, quickly and efficiently determine the orientation of the crystal, and thus adopt a reliable and accurate clamping posture, further improving the operation efficiency and surgical quality. More importantly, since the two clamping fingers of the clamping pliers rotate with the clamping operation, the field of view of the lighting lamp changes. Especially after opening, its axial lamp can no longer form illumination for the view within the clamping range. Therefore, at this time, the oppositely arranged radial lamps can timely make up for this defect. It can be seen that by adopting the lighting lamps arranged in the radial and axial directions, the problem that the clamping operation cannot be correctly carried out due to the change of the field of view of the clamping pliers can be solved.

[0055] In this embodiment, the axial LED lamp and the radial LED lamp can also be replaced with a camera, and an external display screen is added, so that the position of the crystal can be displayed in real time through the display screen, and the angle of the clamping pliers can be adjusted to make the clamping operation accurate and reliable.

[0056] In this embodiment, the right clamping finger is provided with a clamping groove 26 for embedding the left clamping finger, and the end face of the right clamping finger is a straight plane. The clamping groove can enclose the left clamping finger, thus on the one hand locking the clamped object and preventing it from falling easily, increasing the reliability of clamping, and on the other hand making one side of the right clamping finger form a surface independently, which can increase the pushing area of the crystal, thus avoiding the situation that the pushing end may be too sharp and damage the crystal in the prior art, and ensuring the safety and reliability of the operation.

[0057] In this embodiment, clamping teeth 27 are arranged on the inner clamping surfaces of the left clamping finger and the right clamping finger. By means of the clamping teeth, the friction force between the clamping fingers and the clamped object can be increased, further preventing the crystal from falling off.

[0058] In this embodiment, the outer part of the guiding seat is provided with a holding portion 28 that is small in the middle and large at both ends. Thread patterns are provided on the holding portion to facilitate fixing the guiding seat by hand, making the piercing portion entering the patient's eye stable and reliable without damaging the eye.

[0059] In this embodiment, a power source 29 is arranged inside the rod body. The power source is electrically connected to the LED lamp and the electromagnet. A control switch 30 for operating the energization of the LED lamp and the electromagnet is arranged on the rod body.

[0060] This conveyor can perform feeding and taking-out operations:

[0061] When feeding the intraocular lens, first place the intraocular lens into the large straight cavity, then embed the left clamping finger into the right clamping finger to fix the intraocular lens in the clamping groove. Then push the rod body, and the intraocular lens sequentially passes through the large straight cavity and the tapered cavity and then enters the small straight cavity. Then move the entire conveyor, insert the piercing end into the affected eye through the minimally invasive opening, and then push the rod body to push the intraocular lens out of the small straight cavity and into the affected eye to complete the feeding. For details, see Figures 9-15 ;

[0062] When taking out the intraocular lens, move the entire conveyor, insert the piercing end into the affected eye through the minimally invasive opening, then push the rod body to push the clamping forceps into the affected eye, open the clamping fingers, then determine the position of the intraocular lens through the lighting lamp, adjust the position of the clamping forceps, tighten the clamping forceps to fix the intraocular lens in the clamping groove, and then pull out the intraocular lens through the special-shaped guiding channel to complete the taking-out operation.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. Intraocular lens injector, characterized in that: It includes a guiding base and a pushing rod. The guiding base includes a piercing section, a guiding section, a feeding section, and a special-shaped guiding channel communicatively arranged in the piercing section, the guiding section, and the feeding section. The piercing section is a cylindrical tube body with an outer diameter less than 2.8 mm. The feeding section is a thin shell. The guiding section is a conical shell. The special-shaped guiding channel includes a large straight cavity arranged in the thin shell, a small straight cavity arranged in the cylindrical tube body, and a conical cavity arranged in the conical shell. The large straight cavity is a cavity body that can directly accommodate an intraocular lens. The conical cavity includes at least two tapers, and the two tapers are smoothly transitioned. The pushing rod includes a rod body and a clamping pliers arranged at the front end of the rod body. The clamping pliers include a bottom plate and a left clamping finger and a right clamping finger hinged to the bottom plate. Clamping driving fingers are hinged to the ends of the left clamping finger and the right clamping finger. A slider is slidably arranged on the bottom plate, and the two clamping driving fingers are hinged to the slider. The slider is made of ferromagnetic material, and an electromagnet for magnetically attracting the slider to open the clamping fingers is arranged on the bottom plate. A driving wire for pulling the clamping fingers to perform the clamping operation is arranged on the slider. A driving mechanism for tensioning the driving wire is also arranged on the rod body. The right clamping finger is provided with a clamping groove for embedding the left clamping finger. The end face of the right clamping finger is a straight plane. The left clamping finger and the right clamping finger are both provided with lighting lamps. The lighting lamps include an axial LED lamp arranged on the end face of the left clamping finger or / and the right clamping finger and a radial LED lamp arranged on the side face of the left clamping finger or / and the right clamping finger. The radial LED lamp of the left clamping finger and the radial LED lamp of the right clamping finger are arranged oppositely.

2. The intraocular lens inserter according to claim 1, wherein: Clamping teeth are arranged on the inner clamping surfaces of the left clamping finger and the right clamping finger.

3. The intraocular lens inserter according to any one of claims 1-2, characterized in that: The driving mechanism includes a wire reel rotatably arranged in the rod body and a rotating handle fixed on the wire reel. A limit pin is arranged on the rotating handle, and a limit hole for inserting the limit pin is arranged on the rod body.

4. The intraocular lens injector according to any one of claims 1-2, characterized in that: A holding part with a small middle and large ends is arranged on the outside of the guiding base.

5. The intraocular lens injector according to any one of claims 1-2, characterized in that: A power source is arranged in the rod body. The power source is electrically connected to the LED lamp and the electromagnet. A control switch for operating the power-on of the LED lamp and the electromagnet is arranged on the rod body.

6. An intraocular lens delivery method, characterized in that: An intraocular lens transporter according to any one of claims 1-5 is adopted.

7. The method for delivering an intraocular lens according to claim 6, characterized in that: When feeding, the left clamping finger is embedded in the right clamping finger, the intraocular lens is fixed in the clamping groove, and is fed through the special-shaped guiding channel; when taking out, the position of the intraocular lens is determined through the lighting lamp, the intraocular lens is fixed in the clamping groove, and the intraocular lens is pulled out through the special-shaped guiding channel.

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