CN222828729U - Pre-nucleus splitting device for hard nucleus cataract - Google Patents

Abstract

The present application discloses a pre-chopping device for hard-nuclear cataracts, which relates to the technical field of ophthalmic surgical instruments, including a chopping head and a handle portion, wherein the chopping head is fixedly connected to the handle portion, the chopping head is a triangular structure, the end of the chopping head away from the handle portion is a chopping tip, the end of the chopping head connected to the handle portion is a connecting surface end, the chopping tip is provided with blunt circular saw teeth, and the thickness of the chopping head gradually thickens from the chopping tip side to the connecting surface end side. The present application is conducive to reducing the superemulsification energy release of patients with hard-nuclear cataracts, reducing the surgical risks of corneal damage, iris damage, etc., and improving the surgical efficiency and safety of patients with hard-nuclear cataracts.

Description

Pre-nucleus splitting device for hard nucleus cataract

Technical Field

The application relates to the technical field of ophthalmic surgical instruments, in particular to a pre-nucleus splitter for hard nucleus cataract.

Background

Cataracts, i.e. clouding of the lens, are the most common types of age-related cataracts, also known as senile cataracts, and are one of the most common causes of vision disorders worldwide. Cataracts develop to a degree that causes light to pass through the refractive medium and be blocked from being projected onto the retina, causing vision impairment, and some patients may also develop complications such as glaucoma that further cause vision impairment. Cataract surgery involves removal of the clouded lens while implanting an intraocular lens as a replacement for the clouded lens to allow precise focusing of light onto the retina. Phacoemulsification in combination with intraocular lens implantation is the mainstay of cataract treatment.

In clinic, patients with advanced sclerotic cataract with hardened and toughened lens often suffer from a series of complications such as corneal edema, iris injury, great loss or even decompensation of corneal endothelium and the like caused by difficult treatment of the lens nucleus sclerotic nucleus, long ultrasonic emulsification energy release time, high operation requirement and difficult grasp. The Pre-nucleus splitting technology (Pre-Chop) adopts a mechanical nucleus splitting mode with zero energy release to treat the nucleus blocks, so that the release of ultrasonic emulsification energy is reduced, and the damage of ultrasonic energy to eye tissues can be reduced. Therefore, the application designs a pre-nucleus splitting device for the hard nucleus cataract according to the actual clinical work requirement, which is convenient for operators to treat and remove the hard nucleus cataract by adopting a mechanical nucleus splitting and dividing mode with zero energy release, reduces the operation risk of the hard nucleus cataract patient and improves the operation efficiency and safety of the hard nucleus cataract patient.

Disclosure of utility model

The application mainly aims to provide a pre-nucleus splitting device for hard nucleus cataract, which aims to facilitate an operator to treat and remove the hard nucleus cataract by adopting a mechanical nucleus splitting and dividing mode with zero energy release, reduce the risk of the operation of a patient with the hard nucleus cataract and improve the operation efficiency and safety of the patient with the hard nucleus cataract.

The technical scheme adopted by the application is as follows:

The utility model provides a pre-split nuclear ware for hard core cataract, includes split nuclear head and handle portion, split nuclear head with handle portion fixed connection, split nuclear head is triangle structure, split nuclear head keep away from the one end of handle portion is split nuclear pointed end, split nuclear head with handle portion connects one end for the junction surface end, it is provided with blunt round sawtooth to split nuclear pointed end, split nuclear head's thickness by split nuclear pointed end one side toward with junction surface end one side thickens gradually.

Optionally, the length of the connection surface end is 2mm, the distance between the splitting core tip and the connection surface end is 1.6mm, and the maximum thickness of the splitting core head is 2mm.

Optionally, the handle portion includes L type connecting rod and handle, L type connecting rod one end with the junction surface end is fixed, the other end of L type connecting rod with the handle is fixed.

Optionally, an anti-slip sheath is sleeved on the handle.

Compared with the prior art, the application has the beneficial effects that:

The pre-splitting device for the hard nucleus cataract provided by the embodiment of the application is beneficial to the firm clamping of the split nucleus head to the lens nucleus by designing the rounded saw teeth at the split nucleus tip of the split nucleus head, and simultaneously designs the split nucleus head into a triangle body shape with the thickness gradually thickened from one side of the split nucleus tip to one side of the connecting surface end, so that the contact area between the split nucleus tip and the lens nucleus is small, the pre-splitting device is more beneficial to the completion of the pre-splitting, the damage to the zonules, the iris tissues and the cornea endothelium is avoided by using the pre-splitting device, the release of unnecessary ultrasonic emulsification energy can be effectively reduced after the pre-splitting treatment, the surgical risk of a hard nucleus cataract patient is reduced, and the surgical efficiency and the safety of the hard nucleus cataract patient are improved.

Drawings

Fig. 1 is a schematic structural diagram of a pre-splitter for hard nucleus cataract according to an embodiment of the present application under a single view angle.

The reference numerals in the drawings indicate:

1-split core head, 2-handle part, 201-L-shaped connecting rod, 202-handle rod and 3-rounded saw tooth.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear are used in the embodiments of the present application) are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.

In the present application, unless explicitly specified and limited otherwise, the terms "connected," "fixed," and the like are to be construed broadly, and for example, "fixed" may be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is 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 addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.

Referring to fig. 1, an embodiment of the present application provides a pre-splitting device for hard nucleus cataract, which includes a splitting head 1 and a handle portion 2, wherein the splitting head 1 is fixedly connected with the handle portion 2, one end of the splitting head 1, which is far away from the handle portion 2, is a splitting tip, the splitting tip is provided with a blunt circular saw tooth 3, one end of the splitting head 1, which is connected with the handle portion 2, is a connection surface end, the splitting head 1 is in a triangle structure, and the thickness of the splitting head 1 gradually increases from one side of the splitting tip to one side of the connection surface end. Conceivably, because the split core tip is provided with the blunt circular saw tooth 3, utilize the nail that blunt circular saw tooth 3 can be fine to be in good positioning contact with the lens core, the thickness of split core tip 1 is by splitting core tip one side to gradually thickening with junction surface end one side simultaneously for split core tip and lens core's area of contact is little, split core pressure is big at the unit area when splitting the core, split the breach at the lens core more easily, and split whole lens core along split breach gradually by split core tip 1 that thickness gradually increases, thereby realize splitting the core in advance.

In this embodiment, the length L of the connection surface end is 2mm, so that the entry and exit of the main cornea incision of 2.2mm are facilitated, and since the width of the main cornea incision of the current cataract surgery is 2.2mm-3.0mm, and 2.2mm is the size of the incision which is common in the current international advanced level, the length L of the connection surface end is 2mm, so that the entry and exit of the split nucleus head 1 into and out of the main cornea incision are facilitated. The distance d between the nucleus splitting tip and the connecting surface end is 1.6mm, the maximum thickness h of the nucleus splitting head 1 is 1.8mm, and the nucleus splitting tip and the connecting surface end are convenient for entering and exiting the main cornea incision and the nucleus splitting safety.

The handle 2 includes the L-shaped connecting rod 201 and the handle 202, one end of the L-shaped connecting rod 201 is fixed to the connecting surface, the other end of the L-shaped connecting rod 201 is fixed to the handle 202, the handle 202 is fixed to the splitting head 1 through the L-shaped connecting rod 201, the splitting head 1 forms a 90-degree included angle with the handle 202, the splitting operation is facilitated, an anti-slip sheath is arranged on the handle 202, and an anti-slip effect can be achieved when the handle 202 is held by a hand.

Based on the above, the use method of the pre-splitting device for hard nucleus cataract provided by the embodiment of the application is as follows:

After the continuous annular capsulorhexis and water separation are completed, pre-splitting is carried out, a Nagahara nucleus splitting device (a classical cataract surgical instrument) enters an anterior chamber through a cornea side incision, the anterior chamber is clung to a lens equatorial portion in a capsular bag, the pre-splitting device enters the anterior chamber through a cornea main incision by the right hand, the positions of the left hand Nagahara nucleus splitting devices are radially aligned from the capsulorhexis edge near the main incision, and the left hand Nagahara nucleus splitting device and the right hand pre-splitting device are in horizontal direction opposite extrusion movement, so that the split lens nucleus is extruded by utilizing the fiber arrangement mode of the lens. Nagahara the nucleus splitter and the pre-nucleus splitter meet or nearly meet at the center of the lens, the two instruments are slightly moved laterally to two sides to divide the lens nucleus into a complete left half and a complete right half. Then the Nagahara nucleus splitter slides into the equatorial part of the lens in the 8-point capsular bag, the equatorial part is pulled towards the central position of the capsular bag, the pre-nucleus splitter is tightly attached to the central position of the right half nucleus block, and the pre-nucleus splitter and the Nagahara nucleus splitter are oppositely extruded to move, so that the right half lens nucleus is divided into two parts, and the nucleus splitting mode of the left half nucleus block is the same as that of the right half nucleus block. After nucleus splitting is completed, the right hand pre-nucleus splitter is removed, a ultrasonic emulsification needle is inserted into the anterior chamber, nucleus blocks are removed through emulsification, and the next cataract operation is performed.

In conclusion, the pre-nucleus splitting device for the hard nucleus cataract has the advantages that the size of the pre-nucleus splitting device is proper, the pre-nucleus splitting device is easy to operate through a main cornea incision of 2.2mm, the pre-nucleus splitting device is suitable for micro-incision cataract surgery, the sawtooth-shaped nucleus splitting tip is firmly clamped on a lens nucleus forceps in the nucleus splitting process through two hands, the horizontal in-situ pre-nucleus splitting can be realized, damage to zonules, iris tissues and cornea endothelium is avoided, unnecessary ultrasonic emulsification energy release is reduced, surgery risks of hard nucleus cataract patients are reduced, and surgery efficiency and safety of the hard nucleus cataract patients are improved.

The foregoing description of the preferred embodiments of the application is not intended to limit the application to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the application are intended to be included within the scope of the application.

Claims (4)

1. The utility model provides a pre-split nuclear ware for hard core cataract, its characterized in that, including splitting nuclear head and handle portion, split nuclear head with handle portion fixed connection, it is triangle body structure to split nuclear head, it keeps away from to split nuclear head the one end of handle portion is split nuclear pointed end, split nuclear head with handle portion connects one end and is the junction surface end, it is provided with blunt round sawtooth to split nuclear pointed end, split nuclear head's thickness by split nuclear pointed end one side toward with junction surface end one side thickens gradually.

2. The pre-splitter for hard nucleus cataracts of claim 1, wherein the length of the junction face end is 2mm, the distance between the splitting tip and the junction face end is 1.6mm, and the maximum thickness of the splitting head is 2mm.

3. The pre-splitter for hard nucleus cataract according to claim 1, wherein the handle portion comprises an L-shaped connecting rod and a handle rod, one end of the L-shaped connecting rod is fixed to the connecting face end, and the other end of the L-shaped connecting rod is fixed to the handle rod.

4. A pre-splitter for hard nucleus cataracts as claimed in claim 3 wherein the stem is provided with an anti-slip sheath.