CN220046192U

CN220046192U - Intraocular lens injector

Info

Publication number: CN220046192U
Application number: CN202321253568.5U
Authority: CN
Inventors: 吴月红; 曹云飞; 乐寅维
Original assignee: Ningbo Beilun Peoples Hospital
Current assignee: Ningbo Beilun Peoples Hospital
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-11-21
Anticipated expiration: 2033-05-23

Abstract

The utility model discloses an intraocular lens injector, comprising: a housing having a through passage extending in a longitudinal direction of the syringe; a syringe; a plunger, a threaded part is arranged on the plunger rod body; a push-pull slider slidably disposed in the through passage in a longitudinal direction; the first movable pressing block and the second movable pressing block are movably arranged on the push-pull sliding block, and move towards the folding or unfolding direction along with the movement of the push-pull sliding block, and when the first movable pressing block and the second movable pressing block are folded, a threaded channel in threaded fit with the threaded part is formed. The utility model provides an intraocular lens injector, which is characterized in that a first movable pressing block and a second movable pressing block which can be mutually folded or opened are additionally arranged in a shell, and when the two movable pressing blocks are opened, a piston part can be directly and rapidly pushed or withdrawn in a manner of pulling a plunger; when the two are closed, the piston part needs to be pushed in or pushed out by rotating the plunger.

Description

Intraocular lens injector

Technical Field

The utility model relates to the technical field of injectors, in particular to an intraocular lens injector.

Background

Intraocular lens (IOL) surgery is a common ophthalmic procedure used to treat cataracts. Cataracts are those in which the lens in the eye becomes blurred or clouded, resulting in reduced vision. In operation, the surgeon removes the patient's lens through a small incision and implants an intraocular lens to restore vision. Surgery is typically performed under local anesthesia for a short period of time and the patient can usually go home on the same day. Intraocular lenses (IOLs) may also be used to treat refractive eye problems such as myopia, hyperopia, and the like. This procedure is known as refractive intraocular lens replacement. In such surgery, the surgeon removes the lens and implants an intraocular lens that fits the patient to improve vision.

Intraocular lens (IOL) injectors are a type of medical device that are specifically used to insert intraocular lenses into eyes. It is generally composed of a syringe and a syringe head. The syringe is a hollow tube that can be loaded with an intraocular lens. The injector head is a special design that allows the intraocular lens to be released from the cartridge and accurately implanted into the eye.

The traditional intraocular lens injector advances or withdraws the piston through the mode of rotatory plunger, and the plunger can't fall back fast, proposes this scheme to this special.

Disclosure of Invention

The present utility model aims to solve one of the technical problems in the related art to a certain extent. Therefore, the utility model provides an intraocular lens injector, which is characterized in that a first movable pressing block and a second movable pressing block which can be mutually folded or opened are additionally arranged in a shell, and when the two movable pressing blocks are opened, a piston part can be directly and rapidly pushed in or withdrawn by a way of pulling a plunger; when the two are closed, the piston part needs to be pushed in or pushed out by rotating the plunger.

The technical scheme adopted by the utility model is as follows: there is provided an intraocular lens injector comprising: a housing having a through passage extending in a longitudinal direction of the syringe; the head of the injection cylinder is provided with a first injection port, and the tail inlet of the injection cylinder is arranged in the through channel and is fixedly connected with the shell; a plunger, the piston part of the head part of which passes through the through channel and is arranged in the injection cylinder in a sliding way, and a thread part is arranged on the plunger rod body; a push-pull slider slidably disposed in the through passage in a longitudinal direction; the first movable pressing block and the second movable pressing block are movably mounted on the push-pull sliding block, and move towards the folding or unfolding direction along with the movement of the push-pull sliding block, and when the first movable pressing block and the second movable pressing block are folded, a threaded channel in threaded fit with the threaded part is formed.

After the structure is adopted, when the first movable pressing block and the second movable pressing block are opened, the plunger loses the limitation of the first movable pressing block and the second movable pressing block, and the plunger can be directly and rapidly pushed or withdrawn by pulling the plunger. When the first movable pressing block and the second movable pressing block are folded, the threaded part on the plunger is matched with the threaded channel, the piston part can be pushed in or pushed out in a mode of rotating the plunger, the injection speed is low, and the precision is high. The push-pull sliding block can slide along the longitudinal direction of the injector relative to the shell, and can be used as an adjusting switch to control the first movable pressing block and the second movable pressing block to be mutually folded or unfolded so as to enable the injector to be switched back and forth in two injection modes.

Preferably, the push-pull sliding block is provided with a push-pull part exposed out of the shell; the push-pull sliding block is pushed by the push-pull part to longitudinally move in the shell.

As a preferable scheme, the two sides of the first movable pressing block are provided with first guide posts, and the push-pull sliding block is provided with first guide grooves matched with the first guide post grooves; the first guide post is matched with the first guide groove post groove, and the longitudinal movement of the push-pull sliding block is changed into the transverse movement of the first movable pressing block.

As a preferable scheme, the two sides of the second movable pressing block are provided with second guide posts, and the push-pull sliding block is provided with second guide grooves matched with the second guide post grooves; the second guide post is matched with the second guide groove post groove, and the longitudinal movement of the push-pull sliding block is changed into the transverse movement of the second movable pressing block.

As a preferable scheme, the first movable pressing block is provided with a first half thread, the second movable pressing block is provided with a second half thread, and the first half thread and the second half thread are combined to form the thread channel.

Preferably, the injection tube head is also provided with a second injection port; a second injection port for injecting saline or other fluid to assist in releasing the intraocular lens from the cartridge and into the eye; other medications, such as antibiotics or anti-inflammatory medications, may also be injected through the second injection port to prevent infection and reduce ocular pain.

Preferably, the housing includes a first housing and a second housing, and the first housing and the second housing are mutually covered to form the through channel.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of a syringe according to an embodiment of the present utility model;

FIG. 2 is a perspective view of the syringe with the first housing removed in accordance with an embodiment of the present utility model;

FIG. 3 is a perspective view of the syringe with the housing removed in accordance with an embodiment of the present utility model;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a schematic view of the syringe according to the embodiment of the present utility model with the housing removed;

FIG. 6 is a partial enlarged view at B in FIG. 5;

FIG. 7 is a schematic diagram of connection of push-pull sliders in an embodiment of the present utility model;

fig. 8 is a perspective view of a first movable mass and a second movable mass in an embodiment of the utility model.

The reference numerals in the figures illustrate:

1. a housing; 2. a syringe; 3. a plunger; 4. a push-pull sliding block; 5. a first movable briquetting; 6. a second movable briquetting; 11. a first housing; 12. a second housing; 21. a first injection port; 22. a second injection port; 31. a threaded portion; 32. a piston section; 41. a push-pull part; 42. a first guide groove; 43. a second guide groove; 51. a first guide post; 52. a first half thread; 61. a second guide post; 62. and a second half thread.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

As shown in fig. 1-8, an intraocular lens injector is disclosed in this embodiment comprising: a housing 1 having a through passage extending in a longitudinal direction of the syringe; a syringe 2, the head of which is provided with a first injection port 21 and a second injection port 22, the second injection port 22 being sealable by a plug, the tail inlet being placed in the through-channel and fixedly connected to the housing 1; a plunger 3 having a piston portion 32 of a head portion passing through the through-passage and slidably disposed inside the syringe 2, the plunger 3 having a threaded portion 31 provided on a shaft thereof; a push-pull slider 4 slidably disposed in the longitudinal direction within the through passage; the first movable pressing block 5 and the second movable pressing block 6 are movably mounted on the push-pull sliding block 4, the first movable pressing block 5 and the second movable pressing block 6 move towards the mutually folding or unfolding direction along with the movement of the push-pull sliding block 4, and when the first movable pressing block 5 and the second movable pressing block 6 are folded, a threaded channel in threaded fit with the threaded portion 31 is formed.

As shown in connection with fig. 2 and 3, in the present embodiment, the syringe 2 has a first injection port 21 at the head and an inlet for the piston portion 32 at the tail. The construction is the same as that of the conventional syringe 2, and the tail portion of the syringe 2 is located inside the housing 1 in this embodiment and is fixedly connected to the housing 1. The head of the plunger 3 is provided with a piston part 32, the tail is provided with a handle which is convenient for pushing and pulling or rotating, the rod body of the plunger 3 in the middle part is provided with a thread part 31, and the thread part 31 is of an external thread structure. Wherein the piston portion 32 passes through the through-passage and is slidably arranged on the inner wall of the syringe barrel 2, the threaded portion 31 is located within the housing 1, and the handle is always exposed on the surface of the housing 1.

Specifically, as shown in connection with fig. 3 and 4. The push-pull slider 4 has a push-pull portion 41 exposed to the housing 1; the push-pull slider 4 is pushed to move relative to the housing 1 by the push-pull portion 41.

Further, in this embodiment, the housing 1 includes a first casing 11 and a second casing 12, where the first casing 11 and the second casing 12 are mutually covered to form the through channel. After the first shell 11 and the second shell 12 are covered and formed, two strip-shaped notches are formed on two sides of the first shell, the main body of the push-pull sliding block 4 is positioned in the shell 1, and the joint of the push-pull part 41 and the main body is in sliding fit with the notch on the shell 1, so that the push-pull part 41 can be exposed on the surface of the shell 1 relatively.

Specifically, as shown in fig. 5 and 6, in this embodiment, the main body of the push-pull slider 4 is in a yoke structure, two yoke arms are parallel and spaced, a first guide groove 42 and a second guide groove 43 are respectively provided on the two yoke arms, two sides of the first movable pressing block 5 extend outwards to form a first guide column 51, and the first guide column 51 is matched with the first guide groove 42. The two sides of the second movable pressing block 6 are provided with second guide posts 61, and the second guide posts 61 are matched with the second guide grooves 43 in a column groove mode.

Further, in order to change the longitudinal movement of the push-pull slider 4 into the lateral movement of the first movable pressing block 5 and the second movable pressing block 6, in this embodiment, the first guiding grooves 42 on the same yoke are distributed in a splayed shape in a lateral direction with respect to the second guiding grooves 43.

Specifically, as shown in fig. 7 and 8, the first movable pressing block 5 is provided with a first half thread 52, the second movable pressing block 6 is provided with a second half thread 62, and the first half thread 52 and the second half thread 62 are combined to form the thread channel.

In this embodiment, the first half threads 52 and the second half threads 62 combine to form a circumferentially discontinuous internal thread structure, i.e., a threaded passage. In another embodiment, the first half threads 52 in combination with the second half threads 62 form a circumferentially continuous internal thread structure, i.e., a threaded passage.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. An intraocular lens injector, comprising:

a housing (1) having a through passage extending in a longitudinal direction of the syringe;

the head of the injection cylinder (2) is provided with a first injection port (21), and the inlet of the tail of the injection cylinder is arranged in the through channel and is fixedly connected with the shell (1);

a plunger (3) having a piston portion (32) of a head portion passing through the through passage and slidably disposed inside the syringe (2), the plunger (3) having a threaded portion (31) provided on a shaft thereof;

a push-pull slider (4) slidably disposed in the longitudinal direction within the through passage;

the movable pressing block comprises a first movable pressing block (5) and a second movable pressing block (6) which are movably arranged on the push-pull sliding block (4), wherein the first movable pressing block (5) and the second movable pressing block (6) move along the movement of the push-pull sliding block (4) towards the folding or unfolding direction, and when the first movable pressing block (5) and the second movable pressing block (6) are folded, a threaded channel matched with the threaded part (31) in a threaded mode is formed.

2. An intraocular lens injector according to claim 1, wherein: the push-pull slider (4) has a push-pull portion (41) exposed to the housing (1).

3. An intraocular lens injector according to claim 1, wherein: the two sides of the first movable pressing block (5) are provided with first guide posts (51), and the push-pull sliding block (4) is provided with first guide grooves (42) matched with the first guide posts (51) in a column groove mode.

4. An intraocular lens injector according to claim 3, wherein: the two sides of the second movable pressing block (6) are provided with second guide posts (61), and the push-pull sliding block (4) is provided with second guide grooves (43) matched with the second guide posts (61) in a column groove mode.

5. An intraocular lens injector according to claim 1, wherein: the first movable pressing block (5) is provided with a first half thread (52), the second movable pressing block (6) is provided with a second half thread (62), and the first half thread (52) and the second half thread (62) are combined to form the thread channel.

6. An intraocular lens injector according to claim 1, wherein: the head of the injection cylinder (2) is also provided with a second injection port (22).

7. An intraocular lens injector according to claim 1, wherein: the shell (1) comprises a first shell (11) and a second shell (12), and the first shell (11) and the second shell (12) are mutually covered to form the through channel.