CN210991110U - Rear bag protective ring - Google Patents

Abstract

A posterior capsule protective ring relates to surgical instruments, in particular to a posterior capsule protective ring which can prevent a crystalline lens nucleus block from falling into a vitreous cavity and is convenient for smoothly completing an operation. The utility model comprises an injection pipe and a gasket strip, wherein the injection pipe is a hollow cylindrical pipe, the front end of the injection pipe is provided with a pipe orifice, the side wall of the rear half section is symmetrically provided with chutes, winding shafts are arranged in the chutes and slide along the chutes, and one end of each winding shaft is provided with a curling handle; the tail end of the gasket strip is fixed on the winding shaft, the front end of the gasket strip penetrates out of the pipe orifice of the injection pipe and then is spirally coiled, and the gasket strip is made of nickel-titanium alloy. The utility model discloses a nickel titanium alloy preparation gasket strip can be under high temperature fast recovery's characteristics, can be when using, through high temperature hot water fast heating gasket strip can use, and the back is accomplished in the operation, through rolling coupling curling handle, can draw in the gasket strip in the rolling epaxially, is convenient for deposit, is provided with the ring simultaneously on gasket strip end, fills spiral helicine intermediate structure through the ring structure.

Description

Rear bag protective ring

Technical Field

The utility model relates to a surgical instrument, in particular to a posterior capsule protective ring which can prevent a crystalline lens nucleus block from falling into a vitreous cavity and is convenient for smoothly completing an operation.

Background

Cataract is the first eye disease causing blindness in the world and China, and accounts for about 45 percent of all patients causing blindness. Although cataracts cannot be prevented, they can be successfully treated by surgery to restore vision.

It has long been recognized that lenticular opacity can be a cataract which blocks light from entering the eye and removal of the clouded lens can be effective in improving and restoring vision. The recent cataract extraction in the capsule (ICCE) is to completely extract the turbid crystalline lens from the eye, and because the operation does not retain the capsular sac of the crystalline lens, the implantation of the posterior chamber type artificial crystalline lens is difficult, and simultaneously, the incidence rate of vitreous body extraction is high, and complications such as glaucoma, corneal endothelial cell damage, macular cystoid edema, retinal detachment and the like are caused. Modern cataract surgery has been developed further with advances in ophthalmic microsurgical techniques and advances in equipment. Extracapsular cataract extraction (ECCE) is an operation for extracting turbid lens nucleus and cortex parts and retaining the posterior lens capsule, and the operation completely retains the posterior lens capsule, reduces interference and damage to the intraocular structure, prevents the vitreous body from being extracted and complications caused by the vitreous body, and creates conditions for successfully implanting the posterior chamber type artificial lens. Phacoemulsification surgery (Phacoemulsification) has grown mature and well-established since the last 60 s. The operation uses ultrasonic energy to emulsify and suck turbid crystalline lens nucleus and cortex, simultaneously reserves the capsular sac behind the crystalline lens, and is matched with the implantation of a folding artificial crystalline lens to successfully cure a plurality of cataract patients. The phacoemulsification cataract extraction operation has the advantages of short operation time, no need of suture for incision, small corneal astigmatism, fast vision recovery and the like, and is the current mainstream cataract operation mode at home and abroad. However, phacoemulsification has higher requirements for the surgeon, especially for beginners or patients with too hard lens nucleus, the phacoemulsification energy is improperly controlled in the operation, the posterior capsule of the lens is easy to rupture, and the lens nucleus falls into the vitreous cavity to cause a series of serious complications. Can prevent the lens nucleus block from falling into the vitreous cavity and can smoothly complete the operation process.

Disclosure of Invention

The utility model aims to solve the problem that the capsular sac is broken after the crystalline lens is easy to happen in the existing cataract extraction operation, and provides a posterior capsule guard ring which can prevent the crystalline lens nucleus block from falling into the vitreous cavity and is convenient for smoothly completing the operation.

The utility model discloses a back bag guard circle, its characterized in that this guard circle includes injection pipe and packing ring strip, and the injection pipe is hollow cylinder pipe, and the front end is provided with the mouth of pipe, and the symmetry is provided with the spout on the latter half lateral wall, is provided with the rolling axle in the spout, and the rolling axle slides along the spout, and rolling axle one end is provided with curly handle; the tail end of the gasket strip is fixed on the winding shaft, the front end of the gasket strip penetrates out of the pipe orifice of the injection pipe and then is spirally coiled, and the gasket strip is made of nickel-titanium alloy.

The spiral winding structure gradually increases the distance from inside to outside, and the front end of the gasket strip is wound into a circular ring shape.

During use, the winding shaft slides towards the direction of the pipe orifice, during the sliding process, the winding handle on the winding shaft is rotated, the gasket strip is discharged, the gasket strip continuously passes through the pipe orifice, the gasket strip which penetrates out of the pipe orifice is placed in high-temperature hot water for heating, usually 60-80 ℃ hot water is placed, under the action of high temperature, the nickel-titanium alloy is restored to be spiral, a spiral structure with the inner part tight and the outer part loose is formed by taking a circular ring at the front end of the gasket strip as the center, and the spiral structure is placed below the lens nucleus to support the nucleus to be dropped, so that the ultrasonic emulsification cataract extraction is ensured to be carried out smoothly; after the operation is finished, the winding shaft is pulled back, the winding shaft is made to return to the end of the sliding groove at the rear end of the injection tube, in the pulling back process, the part, located inside the injection tube, of the gasket strip is straightened, then the curling handle on the winding shaft is rotated in the reverse direction, the winding shaft is driven to rotate by the curling handle, and the gasket strip is made to wind on the winding shaft by taking the winding shaft as a middle point.

The utility model discloses a back bag guard circle, moreover, the steam generator is simple in structure, the design science, high durability and convenient use, adopt nickel titanium alloy preparation gasket strip, utilize nickel titanium alloy's physical characteristics, can be under the high temperature characteristics of quick reconversion, can be when using, through high temperature hot water quick heating gasket strip can use, after the operation is accomplished, through rolling coupling curling handle, can draw in the gasket strip in epaxial at the rolling, be convenient for deposit, be provided with the ring simultaneously on gasket strip tip, fill spiral helicine intermediate structure through the ring structure, can also avoid all gasket strips to draw in completely in pushing intraductally, convenient to reuse.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Wherein, push injection pipe 1, packing ring strip 2, spout 3, rolling axle 4, curling handle 5.

Detailed Description

Example 1: a rear capsule protection ring comprises an injection pipe 1 and a gasket strip 2, wherein the injection pipe 1 is a hollow cylindrical pipe, the front end of the injection pipe is provided with a pipe orifice, the side wall of the rear half section of the injection pipe is symmetrically provided with a sliding groove 3, a winding shaft 4 is arranged in the sliding groove 3, the winding shaft 4 slides along the sliding groove 3, and one end of the winding shaft 4 is provided with a curling handle 5; the tail end of the gasket strip 2 is fixed on the winding shaft 4, the front end of the gasket strip 2 penetrates out of the orifice of the injection pipe 1 and then is spirally coiled, and the gasket strip 2 is made of nickel-titanium alloy. The spiral winding structure gradually increases the distance from inside to outside, and the front end of the gasket strip 2 is wound into a circular ring shape.

In the using process, the winding shaft 4 slides towards the direction of the pipe orifice, the curling handle 5 on the winding shaft 4 is rotated in the sliding process, the gasket strip 2 is discharged, the gasket strip 2 continuously penetrates through the pipe orifice, the gasket strip 2 penetrating out of the pipe orifice is placed in high-temperature hot water for heating, the hot water is usually placed in 60-80 ℃, under the action of high temperature, the nickel-titanium alloy is restored to be spiral, a spiral structure with the inner part tight and the outer part loose is formed by taking a circular ring at the front end of the gasket strip 2 as the center, the spiral structure is placed below the lens nucleus to support the nucleus to be dropped, and the ultrasonic emulsification cataract aspiration is ensured to be smoothly carried out; after the operation is accomplished, pull back rolling axle 4, make rolling axle 4 return 3 ends in the spout of the 1 rear end of injection pipe, at the in-process of pulling back, the part that packing ring strip 2 is located injection pipe 1 inside is flare-outed, later the curling handle 5 on the reverse rotation rolling axle 4, utilize curling handle 5 to drive rolling axle 4 and rotate, make packing ring strip 2 use rolling axle 4 to twine on rolling axle 4 as the mid point, after the fixed completion, utilize magic area or rubber band hoop on injection pipe 1, restriction rolling axle 4 position can.

Claims (2)

1. A rear capsule protection ring is characterized by comprising an injection pipe (1) and a gasket strip (2), wherein the injection pipe (1) is a hollow cylindrical pipe, the front end of the injection pipe is provided with a pipe orifice, the side wall of the rear half section of the injection pipe is symmetrically provided with sliding grooves (3), a winding shaft (4) is arranged in the sliding grooves (3), the winding shaft (4) slides along the sliding grooves (3), and one end of the winding shaft (4) is provided with a curling handle (5); the tail end of the gasket strip (2) is fixed on the winding shaft (4), the front end of the gasket strip (2) penetrates through the orifice of the injection pipe (1) and then is spirally wound, and the gasket strip (2) is made of nickel-titanium alloy.

2. The rear bag protective ring according to claim 1, wherein the spiral-wound structure has a gradually increasing pitch from inside to outside, and the front end of the gasket strip (2) is wound in a circular shape.

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