High-precision adjustable piston rod of intraocular lens injector

Abstract

The utility model relates to a high-precision adjustable piston rod of an intraocular lens injector, which belongs to the technical field of injectors and comprises an injector body, the inner wall of the injector body is slidably connected with a piston rod, and the injector body and the piston rod are provided with adjusting mechanisms. The adjusting mechanism comprises a connecting block fixed to the outer surface of the piston rod. According to the high-precision adjustable intraocular lens injector piston rod, a handle is rotated to drive an adjusting worm to rotate, so that an adjusting worm gear rotates to drive a driving rod to rotate, a bevel gear rotates to drive a two-way screw to rotate, adjusting blocks get close to or get away from each other under the action of threads, and a hinge rod and an adjusting plate are driven to transfer movement; the adjusting plate slides to a proper distance along the piston rod, the pushing distance can be conveniently controlled and adjusted, then the piston rod is pushed, the limiting block enters the limiting groove in the inner wall of the pushing injector body, pushing injection stability and safety are ensured, and finally the intraocular lens is accurately pushed to a preset position.

Description

Technical Field

[0001] The utility model relates to the technical field of injectors, in particular to a high-precision adjustable piston rod of an intraocular lens injector. Background Technique

[0002] The piston rod of an intraocular lens injector is a precision instrument used in the medical field. Especially in cataract surgery, this instrument is usually used to accurately inject an intraocular lens (an artificial substitute implanted in the eye to replace the natural lens that has become cloudy due to cataract) into a predetermined position in the eye.

[0003] However, in the actual use process of the existing piston rod of an intraocular lens injector, certain requirements are put forward for the operator's operation proficiency. During the surgical operation, the doctor needs to precisely control the piston rod to adjust the position of the intraocular lens to ensure that it can be accurately injected into the predetermined position. However, some unexpected situations may occur in actual operation. For example, the operator may push the piston rod too far or not far enough due to momentary negligence, or other unforeseen situations may occur. These situations may cause the operator to be unable to accurately master the pushing speed and force of the piston rod, thus having an adverse impact on the implantation effect of the intraocular lens. In addition, operators lacking sufficient experience may misjudge the position and state of the lens, thereby affecting the accuracy of the surgery. More seriously, unskilled operation may also increase the risks during the surgery, such as causing damage to eye tissues or triggering other complications. Based on this, a high-precision adjustable piston rod of an intraocular lens injector is proposed to solve the above problems. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a high-precision adjustable piston rod of an intraocular lens injector, which has the advantages of being easy to adjust, etc., and solves the problems that negligence may occur in actual operation, such as pushing too far or not far enough, and other unforeseen problems, resulting in the operator being difficult to master the pushing speed and force and affecting the implantation effect.

[0005] To achieve the above object, the utility model provides the following technical solution: A high-precision adjustable piston rod of an intraocular lens injector, including an injector body, a piston rod is slidably connected to the inner wall of the injector body, and an adjusting mechanism is provided on the injector body and the piston rod;

[0006] The adjusting mechanism includes a connecting block fixed on the outer surface of the piston rod, a starting component is provided on the connecting block, an adjusting component is provided on the starting component, and the adjusting mechanism further includes a limiting component;

[0007] The starting component includes an adjusting worm gear rotatably connected to the upper surface of the connecting block through a bearing. A handle is fixed to the top of the adjusting worm gear. An adjusting worm wheel is meshed with the outer surface of the adjusting worm gear. A driving rod is fixed to the inner wall of the axis of the adjusting worm wheel. First bevel gears are fixed to both the left and right ends of the driving rod. Second bevel gears are meshed with the outer surfaces of the first bevel gears.

[0008] Furthermore, support seats rotatably connected to the driving rod are fixed to both the front and rear sides of the inner top wall of the connecting block.

[0009] Furthermore, a rotating hole is formed in the upper surface of the connecting block, and the rotating hole is rotatably connected to the adjusting worm gear.

[0010] Furthermore, the adjusting component includes a bidirectional screw rod fixed to the inner wall of the axis of the second bevel gear and rotatably connected between the upper and lower sides of the inner cavity of the connecting block through a bearing. Adjusting blocks are threadedly connected to both the upper and lower sides of the outer surface of the bidirectional screw rod. Articulating rods are hinged to the right sides of the front and rear adjusting blocks. Adjusting plates are hinged to the right sides of the upper and lower groups of articulating rods.

[0011] Furthermore, the thread directions of the upper and lower sides of the outer surfaces of the front and rear bidirectional screw rods are opposite.

[0012] Furthermore, the adjusting plate is slidably connected to the piston rod. The front and rear two bidirectional screw rods are symmetrically arranged front and rear with the center line of the piston rod as the axis.

[0013] Furthermore, the limiting component includes two limiting grooves formed in the left side of the injector body. Limiting blocks are slidably connected to the inner walls of the limiting grooves.

[0014] Furthermore, the left sides of the limiting blocks are fixed to the right sides of the adjusting plates. The upper and lower two limiting blocks are symmetrically arranged up and down with the center line of the piston rod as the axis.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] For this high-precision adjustable intraocular lens injector piston rod, by rotating the handle to drive the rotation of the adjusting worm gear, the meshed adjusting worm wheel rotates to drive the rotation of the driving rod. The rotational motion is converted into a linear motion through bevel gears to drive the rotation of the bidirectional screw rod, so that the adjusting blocks approach or move away from each other under the action of the threads, driving the articulating rods and the adjusting plates to transmit movement, enabling the adjusting plate to slide along the piston rod to an appropriate distance, facilitating the control of the adjustment and propulsion distance. Then, the piston rod is pushed, causing the limiting blocks to enter the limiting grooves on the inner wall of the injector body, ensuring the stability and safety of the injection process. Finally, the intraocular lens is accurately injected to the predetermined position. Description of the Drawings

[0017] Figure 1This is a schematic structural view of the present utility model;

[0018] Figure 2 This is a schematic side view of the adjustment mechanism of the present utility model;

[0019] Figure 3 This is the present utility model Figure 1 The enlarged schematic view of the A position in the present utility model;

[0020] Figure 4 This is a schematic view of the connection structure between the adjusting plate and the limiting block of the present utility model.

[0021] In the figure: 1 syringe body, 2 piston rod, 3 adjustment mechanism, 301 connecting block, 302 adjustment worm, 303 handle, 304 adjustment worm gear, 305 driving rod, 306 first bevel gear, 307 second bevel gear, 308 bidirectional screw, 309 adjustment block, 310 articulated rod, 311 adjustment plate, 312 limiting groove, 313 limiting block. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figure 1 , in a high-precision adjustable intraocular lens syringe piston rod in this embodiment, including a syringe body 1, a piston rod 2 is slidably connected to the inner wall of the syringe body 1, and an adjustment mechanism 3 is provided on the syringe body 1 and the piston rod 2.

[0024] It should be noted that through the adjustment mechanism 3, the accurate control of the advancing distance of the piston rod 2 can be realized, thereby ensuring the accuracy and safety of the intraocular lens injection.

[0025] Please refer to Figures 1 to 4, in order to ensure the accuracy and safety of the intraocular lens injection, the adjustment mechanism 3 in this embodiment includes a connection block 301 fixed to the outer surface of the piston rod 2. A starting component is provided on the connection block 301, and an adjustment component is provided on the starting component. The adjustment mechanism 3 further includes a limiting component. The starting component includes an adjustment worm 302 rotatably connected to the upper surface of the connection block 301 through a bearing. A rotation hole is opened on the upper surface of the connection block 301, and the rotation hole is rotatably connected to the adjustment worm 302. A handle 303 is fixed to the top of the adjustment worm 302. An adjustment worm gear 304 is engaged with the outer surface of the adjustment worm 302. A driving rod 305 is fixed to the inner wall of the axis of the adjustment worm gear 304. First bevel gears 306 are fixed to both the left and right ends of the driving rod 305. A second bevel gear 307 is engaged with the outer surface of the first bevel gear 306. By rotating the handle 303, the adjustment worm 302 and the adjustment worm gear 304 are driven to rotate, and then the rotational motion is converted into a linear motion through the driving rod 305 and the bevel gear set, which is convenient for providing power for the operation of the adjustment component.

[0026] Among them, support seats rotatably connected to the driving rod 305 are fixed to the front and rear sides of the inner top wall of the connection block 301, so that the driving rod 305 can be more stable when rotating under force.

[0027] At the same time, the adjustment component includes a bidirectional screw rod 308 fixed to the inner wall of the axis of the second bevel gear 307 and rotatably connected between the upper and lower sides of the inner cavity of the connection block 301 through a bearing. The thread directions on the upper and lower sides of the outer surfaces of the front and rear two bidirectional screw rods 308 are opposite. Adjustment blocks 309 are threadedly connected to the upper and lower sides of the outer surface of the bidirectional screw rod 308. Hinge rods 310 are hinged to the right sides of the front and rear two adjustment blocks 309. The right sides of the upper and lower two groups of hinge rods 310 are hinged to an adjustment plate 311. The adjustment plate 311 is slidably connected to the piston rod 2. The front and rear two bidirectional screw rods 308 are symmetrically arranged front and rear with the center line of the piston rod 2 as the axis. The movement of the adjustment block 309 is transmitted through the hinge rod 310 and the adjustment plate 311, and finally the adjustment plate 311 slides along the piston rod 2 to a suitable position, so as to facilitate the precise control of the advancing distance of the piston rod 2.

[0028] In addition, the limiting component includes two limiting grooves 312 opened on the left side of the injector body 1. A limiting block 313 is slidably connected to the inner wall of the limiting groove 312. The left side of the limiting block 313 is fixed to the right side of the adjustment plate 311. The upper and lower two limiting blocks 313 are symmetrically arranged up and down with the center line of the piston rod 2 as the axis. The limiting grooves 312 on the inner wall of the injector body 1 cooperate with the limiting blocks 313. By the sliding of the adjustment plate 311, the limiting block 313 is driven to move into and completely fit with the inner wall of the limiting groove 312 on the inner wall of the injector body 1, further ensuring the stability and safety of the adjustment injection process.

[0029] The working principle of the above embodiment is:

[0030] According to actual requirements, first, rotate the handle 303 to drive the adjustment worm 302 to rotate. The adjustment worm 302 meshes with the adjustment worm gear 304, thereby driving the adjustment worm gear 304 to rotate. The drive rod 305 connected to the axis of the adjustment worm gear 304 rotates accordingly, and the rotational motion is converted into linear motion through the first bevel gear 306 and the second bevel gear 307. Then, the rotation of the drive rod 305 drives the bidirectional screw 308 to rotate through the second bevel gear 307. Since the upper and lower sides of the outer surface of the two bidirectional screws 308 have threads in opposite directions, the rotation of the threads can make the upper and lower groups of adjustment blocks 309 approach or move away from each other. The movement of the adjustment block 309 is transmitted through the articulated rod 310 and the adjustment plate 311, and finally the adjustment plate 311 slides along the piston rod 2 until the adjustment plate 311 is adjusted to an appropriate distance, thereby accurately controlling the advancing distance of the piston rod 2, and then accurately adjusting the position of the intraocular lens. Then, by pushing the piston rod 2, when the piston rod 2 moves along the injector body 1, it drives the adjustment plate 311 to move. The sliding of the adjustment plate 311 drives the limit block 313 to move into and completely fit with the inner wall of the limit groove 312 on the inner wall of the injector body 1, further ensuring the stability and safety of the adjustment and injection process. At this time, the intraocular lens can be accurately injected into the predetermined position. In summary, the piston rod 2 of the high-precision adjustable intraocular lens injector realizes precise control of the advancing distance of the piston rod 2 through its unique adjustment mechanism 3, ensuring the accuracy and safety of the intraocular lens injection.

[0031] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision adjustable intraocular lens injector piston rod, comprising an injector body (1), characterized in that: The inner wall of the pusher body (1) is slidably connected to a piston rod (2), and the pusher body (1) and the piston rod (2) are provided with an adjustment mechanism (3); The regulating mechanism (3) comprises a connecting block (301) fixed to the outer surface of the piston rod (2), a starting component is provided on the connecting block (301), an regulating component is provided on the starting component, and the regulating mechanism (3) further comprises a limiting component; The starting assembly comprises an adjusting worm (302) rotatably connected to the upper surface of the connecting block (301) via a bearing, a handle (303) being fixed to the top of the adjusting worm (302), an adjusting worm wheel (304) being meshed on the outer surface of the adjusting worm (302), a driving rod (305) being fixed to the inner wall of the axis of the adjusting worm wheel (304), first bevel gears (306) being fixed to the left and right ends of the driving rod (305), and a second bevel gear (307) being meshed on the outer surface of the first bevel gear (306).

2. The high-precision adjustable intraocular lens injector piston rod according to claim 1, characterized in that: Support seats rotatably connected to the driving rod (305) are fixed on both the front and rear sides of the inner top wall of the connection block (301).

3. The high-precision adjustable intraocular lens injector piston rod according to claim 1, characterized in that: The upper surface of the connecting block (301) is provided with a rotating hole, and the rotating hole is rotationally connected to the adjusting worm (302).

4. The high-precision adjustable intraocular lens injector piston rod according to claim 1, characterized in that: The adjustment component comprises a bidirectional screw (308) fixed to the inner wall of the axis of the second bevel gear (307) and rotatably connected to the upper and lower sides of the inner cavity of the connecting block (301) through a bearing, the upper and lower sides of the outer surface of the bidirectional screw (308) are both threadedly connected to the adjustment blocks (309), the right sides of the front and rear adjustment blocks (309) are both hinged with hinge rods (310), and the right sides of the upper and lower groups of the hinge rods (310) are hinged with adjustment plates (311).

5. The high-precision adjustable intraocular lens injector piston rod according to claim 4, characterized in that: The thread directions on the upper and lower sides of the outer surfaces of the front and rear bidirectional screws (308) are opposite.

6. The high-precision adjustable intraocular lens injector piston rod according to claim 4, characterized in that: The adjustment plate (311) is slidably connected to the piston rod (2), and the two front and rear bidirectional screw rods (308) are symmetrical with respect to the center line of the piston rod (2) as the axis.

7. The high-precision adjustable intraocular lens injector piston rod according to claim 4, characterized in that: The limiting assembly comprises two limiting grooves (312) opened on the left side of the injection device body (1), and the inner walls of the limiting grooves (312) are slidably connected to the limiting blocks (313).

8. The high-precision adjustable intraocular lens injector piston rod according to claim 7, characterized in that: The left side of the limit block (313) is fixed to the right side of the adjustment plate (311), and the upper and lower limit blocks (313) are symmetrical about the center line of the piston rod (2) as the axis.

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