Crystal nucleus delivery device for ophthalmic cataract surgery

Abstract

The crystal nucleus delivery device structurally comprises a connecting ring, a grip, a supporting tube, a recycling tube and an adjusting rod, the connecting ring is connected between the supporting tube and the recycling tube, the adjusting rod is arranged in the recycling tube in a sliding fit mode, and the end of the adjusting rod is connected with the grip; the transition ball is arranged on the delivery pipe, and the transition ball is matched with the rubber plate, so that when a crystal nucleus rolls on the rubber plate, the crystal nucleus gradually rotates to be close to the delivery pipe and can collide and abut against the transition ball, the transition ball rotates at the pipe opening of the delivery pipe in the same direction, and the crystal nucleus is meshed for multiple times and divided into broken nucleuses; and then the crystal nucleus enters the instrument to be ground and crushed into smaller volume, and is scattered into the delivery pipe, so that the delivery of the crystal nucleus is better assisted, and the delivery capability of the instrument on the crystal nucleus for the ophthalmic cataract surgery is ensured.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and in particular, to a lens nucleus delivery device for ophthalmic cataract surgery. Background Technology

[0002] Surgery is currently the most effective treatment for cataracts. During small-incision cataract extraction, doctors need to use instruments to deliver the lens nucleus. Generally, an adjusting rod moves the rubber stopper, creating a negative pressure environment in the retrieval tube. This negative pressure environment acts on the delivery tube, drawing the lens nucleus into the retrieval tube. Because the catheter, along with the grippers, expands the receiving space for the lens nucleus, it will first tilt to guide the lens nucleus to roll into the catheter. This causes the lens nucleus to spiral along the inner wall of the rubber plate in the direction of negative pressure, and then rotate due to inertia on the outside of the delivery tube. This makes it difficult for the lens nucleus to enter the delivery tube smoothly, reducing the instrument's ability to deliver the lens nucleus used in ophthalmic cataract surgery. Summary of the Invention

[0003] To address the above problems, the present invention provides a lens nucleus delivery device for ophthalmic cataract surgery, the structure of which includes a connecting ring, a handle, a support tube, a retrieval tube, and an adjusting rod. The connecting ring is connected between the support tube and the retrieval tube, and the adjusting rod is slidably fitted inside the retrieval tube. The end of the adjusting rod is connected to the handle. The support tube includes a rubber plate, a transition ball, grippers, a conduit, and a delivery tube. The rubber plate is connected inside the conduit and is connected above the delivery tube. The transition ball is installed on the delivery tube. The conduit is connected above the recovery tube and has grippers connected to its opening.

[0004] As a further improvement of the present invention, the transition ball includes a sphere, a partition, a floating ring, an interlocking component, a single-opening buckle, and a rolling structure. The floating ring and the partition are connected above the sphere, the interlocking component and the single-opening buckle are installed between the floating rings, and the rolling structure is provided inside the partition.

[0005] As a further improvement of the present invention, the sphere is movably engaged with the outlet of the delivery tube by a floating ring, and can roll along the rolling direction of the crystal nucleus, gradually changing the movement direction of the crystal nucleus, and thus using the surface biting components to bite and break it into fragments, which helps the crystal nucleus to be delivered.

[0006] As a further improvement of the present invention, the engagement assembly includes an arc plate, a cutting element, a side closing plate, a feed port, and a mounting base. The arc plate is connected between the mounting base and the feed port through the side closing plate. The mounting base is connected to the outside of the ball and the cutting element is installed on top of it.

[0007] As a further improvement of the present invention, the cutting component includes a rotating shaft, a hook, an inner limiting groove, and a cutting blade. The rotating shaft and the inner limiting groove are connected above the feed inlet and are connected to the hook. The cutting blade is connected above the hook and is fitted with a clearance inside the inner limiting groove. A side receiving plate is obliquely connected between the inner limiting groove and the arc plate.

[0008] As a further improvement of the present invention, the rolling structure includes a sleeve, a solid ball, a fork, an opening and closing component, and a spherical cover. One end of the sleeve is connected to the inside of the spherical cover, and the other end is connected to the fork. An opening and closing component is provided above the fork via the solid ball.

[0009] As a further improvement of the present invention, the spherical cover is movably fitted inside the partition and single-opening buckle by a fork and a sleeve, which can support its mesh structure to further break the nuclei into smaller volumes and discharge them from the single-opening buckle.

[0010] As a further improvement of the present invention, the opening and closing component includes a fixing block, a connecting rod, a clamp, and a buckle. The fixing block is connected inside the clamp and is slidably engaged above the fork rod through the connecting rod and the buckle. The clamp is connected to the outside of the solid ball and is movably engaged below the fork rod. Beneficial effects

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention features a transition ball on the delivery tube. The transition ball, in conjunction with a rubber plate, allows the lens nucleus to gradually rotate and approach the delivery tube as it rolls on the rubber plate. This causes the transition ball to collide and abut against the lens nucleus, rotating in the same direction at the opening of the delivery tube. This process repeatedly engages the lens nucleus, breaking it into smaller fragments. These fragments are then crushed and dispersed into the delivery tube, further facilitating the delivery of the lens nucleus and ensuring the instrument's ability to deliver lens nuclei for ophthalmic cataract surgery.

[0012] This invention features an engagement component and a crushing structure mounted on a transition sphere. The engagement component and crushing structure work together on the sphere. When the crystal nucleus rolls close to the delivery tube, it will first push against the sphere, causing the sphere to roll back and forth in the same direction as the floating ring at the opening of the delivery tube. Simultaneously, the engagement component sucks in and engages the crystal nucleus, breaking it into fragments and guiding them into the sphere. Then, the crushing structure and the partition layer crush the fragments into smaller volumes, which then fall into the delivery tube from the single opening at the bottom of the sphere.

[0013] The present invention uses an arc plate with an arched structure, the arch of which faces outward of the sphere and has a certain degree of elasticity. It can work with the side plate to bite the crystal nucleus in a claw-like manner and pry the cutting part to break the crystal nucleus into fragments, which are then guided into the sphere through the feed port.

[0014] The present invention forms a bidirectional telescopic structure within the spherical cover by the fork and sleeve, which, in conjunction with the opening and closing parts and the solid ball, directionally pulls the spherical cover to shrink as a whole, thereby changing the hardness of the spherical cover and facilitating the further crushing of crystal nuclei by the feed inlet and the partition. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a lens nucleus delivery device for ophthalmic cataract surgery according to the present invention.

[0016] Figure 2 This is a schematic diagram of the planar structure of the support tube of the present invention.

[0017] Figure 3 This is a bottom view of the transition sphere structure of the present invention.

[0018] Figure 4 This is a schematic diagram of the planar structure of the occlusal component of the present invention.

[0019] Figure 5 This is a schematic diagram of the planar structure of the cutting component of the present invention.

[0020] Figure 6 This is a schematic diagram of the flat surface of the rolling structure of the present invention.

[0021] Figure 7 This is a schematic diagram of the planar structure of the opening and closing component of the present invention.

[0022] In the diagram: Connecting ring-3, handle-1, support tube-2, recovery tube-4, adjusting rod-5, rubber plate-2q, transition ball-2w, gripper-2e, guide tube-2r, delivery tube-2r, sphere-2w1, partition-2w2, floating ring-2w4, interlocking assembly-2w3, single opening buckle-2w6, rolling structure-2w5, arc plate-w31, cutting piece-w35, side closing plate-w32, feed port-w33, insert-w34, rotating shaft-35m, hook-35n, inner limiting groove-35b, cutting blade-35v, sleeve-w51, solid ball-w52, fork rod-w53, opening and closing piece-w54, spherical cover-w55, fixing block-54a, connecting rod-54s, clamp-54d, buckle-54f. Implementation

[0023] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0024] like Figures 1-3As shown, this invention provides a lens nucleus delivery device for ophthalmic cataract surgery, comprising a connecting ring 3, a handle 1, a support tube 2, a retrieval tube 4, and an adjusting rod 5. The connecting ring 3 is sleeved between the support tube 2 and the retrieval tube 4. The adjusting rod 5 is slidably fitted inside the retrieval tube 4, and the handle 1 is fixedly connected to the end of the adjusting rod 5. The support tube 2 includes a rubber plate 2q, a transition ball 2w, a gripper 2e, a conduit 2r, and a delivery tube 2r. The rubber plate 2q is fixedly connected inside the conduit 2r and sleeved above the delivery tube 2r. The transition ball 2w is installed on the delivery tube 2r. The conduit 2r is welded... Connected above the recovery tube 4, and with a gripper 2e hinged at the opening, the transition ball 2w includes a ball 2w1, a partition 2w2, a floating ring 2w4, an engagement component 2w3, a single-opening buckle 2w6, and a crushing structure 2w5. The floating ring 2w4 and the partition 2w2 are fixedly connected above the ball 2w1. Two or more engagement components 2w3 and single-opening buckles 2w6 are installed between the floating rings 2w4. The crushing structure 2w5 is provided inside the partition 2w2. The ball 2w1 is movably engaged with the opening of the delivery tube 2r via the floating ring 2w4, allowing it to roll in the direction of crystal nucleus movement, gradually changing the direction of crystal nucleus movement. The lens nucleus is broken into smaller pieces by the surface-mount occlusive component 2w3, facilitating its delivery. A transition ball 2w is provided on the delivery tube 2r. Utilizing the interaction between the transition ball 2w and the rubber plate 2q, as the lens nucleus rolls on the rubber plate 2q, it gradually rotates and approaches the delivery tube 2r, colliding and contacting the transition ball 2w. This causes the transition ball 2w to rotate in the same direction at the opening of the delivery tube 2r, repeatedly occluding and breaking the lens nucleus into smaller pieces. These smaller pieces are then crushed and dispersed into the delivery tube 2r, further aiding in the delivery of the lens nucleus and ensuring the instrument is suitable for the delivery of lens nuclei used in ophthalmic cataract surgery. The transition ball 2w is equipped with an engagement component 2w3 and a crushing structure 2w5. The engagement component 2w3 and the crushing structure 2w5 work together on the ball 2w1. When the crystal nucleus rolls close to the delivery tube 2r, it will first push against the ball 2w1, causing the ball 2w1 to roll back and forth in the same direction as the floating ring 2w4 at the opening of the delivery tube 2r. The engagement component 2w3 simultaneously sucks and engages the crystal nucleus, breaking it into fragments and introducing them into the ball 2w1. Then, it is crushed by the crushing structure 2w5 and the partition 2w2, breaking it into small volumes, and then falling into the delivery tube 2r from the single-opening buckle 2w6 at the bottom of the ball 2w1. Example

[0025] like Figures 4-7As shown, based on Embodiment 1, the present invention incorporates the following structural components in cooperation: the interlocking assembly 2w3 includes an arc plate w31, a cutting element w35, a side closing plate w32, a feed inlet w33, and a mounting base w34. The arc plate w31 has an arch-shaped structure and is fixedly connected between the mounting base w34 and the feed inlet w33 via the side closing plate w32. The mounting base w34 is inserted into the outside of the sphere 2w1, and the cutting element w35 is mounted on top of it. The cutting element w35 includes a rotating shaft 35m, a hook 35n, an inner limiting groove 35b, and a cutting blade 35v. The rotating shaft 35m and the inner limiting groove 35b... A hook 35n is fixedly connected above the feed inlet w33 and hinged to it. A cutting blade 35v is welded to the hook 35n and fits with the inner limiting groove 35b. A side closing plate w32 is obliquely welded between the inner limiting groove 35b and the arc plate w31. The rolling structure 2w5 includes a sleeve w51, a solid ball w52, a fork w53, an opening and closing part w54, and a spherical cover w55. One end of the sleeve w51 is fixedly connected to the inside of the spherical cover w55, and the other end is sleeved to the fork w53. An opening and closing part w54 is provided above the fork w53 through the solid ball w52. 54. The spherical cover w55 is movably fitted inside the partition 2w2 and the single-opening buckle 2w6 via the fork rod w53 and the sleeve w51, which can support its mesh structure to further break the fragments into smaller volumes and discharge them from the single-opening buckle 2w6. The opening and closing component w54 includes a fixing block 54a, a connecting rod 54s, a clamp 54d, and a buckle 54f. The fixing block 54a is fixedly connected inside the clamp 54d and slidably fitted above the fork rod w53 via the connecting rod 54s and the buckle 54f. The clamp 54d is welded to the outside of the solid sphere w52 and is movably engaged below the fork rod w53. The arc plate w31 has an arched structure with its arch facing outwards from the sphere 2w1. It has a certain degree of elasticity and can work with the side plate w32 to bite the crystal nucleus in a claw-like manner. It can also pry the cutting piece w35 to break the crystal nucleus into fragments. The fragments are then guided into the sphere 2w1 through the feed inlet w33. Since the fork w53 and the sleeve w51 form a two-way telescopic structure inside the spherical cover w55, they can work with the opening and closing piece w54 and the solid ball w52 to directionally pull the spherical cover w55 to shrink as a whole, thereby changing the hardness of the spherical cover w55. This makes it easier for the feed inlet w33 and the partition layer 2w2 to break the crystal nucleus again.

[0026] The working principle of one of the lens nucleus delivery devices used in ophthalmic cataract surgery according to the above technical solution is explained below: In the process of using this invention, when the conduit 2r, in conjunction with the gripper 2e, expands the receiving space for the crystal nucleus, to prevent it from tilting and rolling into the conduit 2r, causing the crystal nucleus to spiral along the annular inner wall of the rubber plate 2q in the direction of negative pressure, and thus inertially spinning outside the delivery tube 2r, making it difficult for the crystal nucleus to smoothly enter the delivery tube 2r, a transition ball 2w is provided on the delivery tube 2r. When the crystal nucleus tilts and rolls into the conduit 2r, it will move along the annular inner wall of the rubber plate 2q towards the delivery tube 2r. On the outside, the ball 2w1 at the outlet of the delivery tube 2r is pushed, causing the ball 2w1 and the floating ring 2w4 to be pulled and rotated in the same direction, thus contracting and pressing the arc plate w31 inside the surface seat w34. The single-opening buckle 2w6 at the bottom of the ball 2w1 is opened, allowing the arc plate w31 to arch and bite the surface of the crystal nucleus on the arc-shaped edge of the side receiving plate w32 on the outside of the feed inlet w33. With the help of the force, the side receiving plate w32 is tilted and bent on both sides of the inner limiting groove 35b. Then, with the help of the inner limiting groove 35b, the hook 35n is lifted and pried to cut. The blade 35V cuts the crystal nucleus in this part into fragments, and guides these fragments from the feed inlet w33 into the interior of the ball 2w1. The rotation of the ball 2w1 also causes the solid ball w52 and the spherical cover w55 inside to swing in the same direction, causing the sleeve w51 and the fork w53 between them to insert into the clamp 54d, allowing the clamp 54d to open in the opposite direction. The fixing block 54a inside it slides and crosses under the fork w53 through the connecting rod 54s and the buckle 54f, which can lock the fork w53 and the sleeve w51 into the solid ball. Between w52 and the spherical cover w55, the spherical cover w55 is pulled and compressed to the outside of the solid sphere w52 by a fixed length, changing the density of its grid structure. The fragments from the feed port w33 are pushed and crushed within the partition layer 2w2 with a certain hardness, causing the fragments to break into smaller volumes. With the direction of negative pressure, they are better discharged from the single-opening buckle 2w6 under the sphere 2w1 into the delivery tube 2r, which better assists in the delivery of the lens nucleus and ensures the instrument's ability to deliver lens nuclei for ophthalmic cataract surgery.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lens nucleus delivery device for ophthalmic cataract surgery, characterized in that: Its structure includes a connecting ring (3), a handle (1), a support tube (2), a retrieval tube (4), and an adjusting rod (5). The connecting ring (3) is connected between the support tube (2) and the retrieval tube (4). The adjusting rod (5) is slidably fitted inside the retrieval tube (4). The end of the adjusting rod (5) is connected to the handle (1). The support tube (2) includes a rubber plate (2q), a transition ball (2w), a clamp (2e), a conduit (2r), and a delivery tube (2r). The rubber plate (2q) is connected inside the conduit (2r) and is connected above the delivery tube (2r). The transition ball (2w) is installed on the delivery tube (2r). The conduit (2r) is connected above the recovery tube (4) and has a clamp (2e) connected at its opening.

2. The lens nucleus delivery device for ophthalmic cataract surgery according to claim 1, characterized in that: The transition ball (2w) includes a ball (2w1), a partition (2w2), a floating ring (2w4), an interlocking component (2w3), a single-opening buckle (2w6), and a rolling structure (2w5). The floating ring (2w4) and the partition (2w2) are connected above the ball (2w1). The interlocking component (2w3) and the single-opening buckle (2w6) are installed between the floating rings (2w4). The rolling structure (2w5) is provided inside the partition (2w2).

3. The lens nucleus delivery device for ophthalmic cataract surgery according to claim 1, characterized in that: The sphere (2w1) is movably engaged with the opening of the delivery tube (2r) via a floating ring (2w4).

4. The lens nucleus delivery device for ophthalmic cataract surgery according to claim 2, characterized in that: The engagement assembly (2w3) includes an arc plate (w31), a cutting element (w35), a side closing plate (w32), a feed port (w33), and a mounting base (w34). The arc plate (w31) is connected between the mounting base (w34) and the feed port (w33) through the side closing plate (w32). The mounting base (w34) is connected to the outside of the sphere (2w1), and the cutting element (w35) is installed on top of it.

5. The lens nucleus delivery device for ophthalmic cataract surgery according to claim 4, characterized in that: The cutting component (w35) includes a rotating shaft (35m), a hook (35n), an inner limiting groove (35b), and a cutting blade (35v). The rotating shaft (35m) and the inner limiting groove (35b) are connected above the feed inlet (w33) and are connected to the hook (35n). The cutting blade (35v) is connected above the hook (35n) and is fitted with a clearance inside the inner limiting groove (35b). A side receiving plate (w32) is obliquely connected between the inner limiting groove (35b) and the arc plate (w31).

6. The lens nucleus delivery device for ophthalmic cataract surgery according to claim 2, characterized in that: The rolling structure (2w5) includes a sleeve (w51), a solid ball (w52), a fork (w53), an opening and closing component (w54), and a spherical cover (w55). One end of the sleeve (w51) is connected to the inside of the spherical cover (w55), ​​and the other end is connected to the fork (w53). The opening and closing component (w54) is provided above the fork (w53) through the solid ball (w52).

7. The lens nucleus delivery device for ophthalmic cataract surgery according to claim 6, characterized in that: The spherical cover (w55) is movably fitted inside the partition (2w2) and the single-opening buckle (2w6) via a fork (w53) and a sleeve (w51).

8. The lens nucleus delivery device for ophthalmic cataract surgery according to claim 6, characterized in that: The opening and closing component (w54) includes a fixing block (54a), a connecting rod (54s), a clamp (54d), and a buckle (54f). The fixing block (54a) is connected inside the clamp (54d) and is slidably engaged above the fork (w53) through the connecting rod (54s) and the buckle (54f). The clamp (54d) is connected to the outside of the solid ball (w52) and is movably engaged below the fork (w53).

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