CN209695544U - Retina fixator in art - Google Patents

Abstract

Retina fixator in a kind of art, operational tool, as in the complicated vitrectomy of row, gold material, it is characterised in that fine needle shape: needle body is cylindrical body, and needle end part is convex globoidal, the other end is homalocephalus the eye of a needle, account for length 1/5: along needle body axis gradual change opposite undergauge to sheet, and elliptical aperture is reserved to end center in the middle part of sheet, edge forms ring and progressive thicken of end elliptical arc swells.Function is to provide in art and having anchor point on the retina, and definitely part presses retina, enables to strip proliferation film and reversely exerts oneself, assistance is completely stripped the forward and backward proliferation film of retina；And it plays a protective role to by the retina at the place of involving.According to patient's needs in art, needle body is folded into arbitrary shape, extremely convenient to use.Postoperative complete taking-up, will not there is the surface of a wound, be inherently eliminated the previous perfluorocarbon liquids drawback with perfluorocarbon liquids, and this product can sterilize use repeatedly, significantly reduce the financial burden of patient.

Description

Retina fixator in art

Technical field

The utility model belongs to medical instruments field, and in particular to for treatment proliferative vitreoretinopathy, row is again The utensil of fixed retina is assisted in miscellaneous vitrectomy.

Background technique

Proliferative vitreoretinopathy (PVR) is view when rhegmatogenous detachment of retina or eye traumas The migration, attached in the forward and backward interface of retina or vitreous chamber such as membranochromic pigments epithelial cell, Deiter's cells and fibroblast , hyperplasia, be proliferated film in forming cellularity in the forward and backward face of retina and vitreum, synthesize collagen and contraction, cause retina de- From, eventually lead to visual performance be badly damaged even blind.Proliferative vitreoretinopathy (PVR) is reattachment of retina The main reason for one of complication of operation and reattachment of retina operative failure.Proliferative glass once occurs for clinical patients Stereoscopic retinopathy (PVR), drug therapy are difficult to control the development of the state of an illness substantially, and modern operation on vitreous is still that treatment is serious The prefered method of PVR.The key of operation is to strip proliferation film, release traction of the basal part vitreum to retina, restores normal Anatomical structure and as far as possible restore function.The technological difficulties of PVR operation are the increasings sufficiently stripped before and after retina as far as possible Film is grown, loosens and retina and does not damage retina, because retina proliferation film is often closely attached to retina front and rear surfaces, It is extremely difficult to lead to sufficiently to strip proliferation film, and is very easy to damage retina during stripping, causes retinal hole and big Blood is measured, the visual acuity for seriously affecting surgical effect and patient restores, and can cause operative failure.Proliferation film art is stripped at present In, the main method of use is that fixed retina is assisted using perfluorocarbon liquids (heavy water), must be taken out in time after operation Perfluorocarbon liquids, but perfluorocarbon liquids are colorless and transparent liquid, tend not to take completely it is net, such as perfluorocarbon liquids into Enter under retina, taking-up is particularly difficult, and perfluocarbon residual liquid longer-term persistence can generate toxic effect to tissue within the eye, make It is bigger to retina murder by poisoning at corneal edema muddiness, retina cell can be made to damage dead.In addition, perfluorocarbon liquids are one Secondary property uses consumptive material, expensive, and patient bears very big financial burden.Although oneself significantly improves the success rate of operation of current PVR, But the Postoperative visual acuity of many patients is still undesirable, and the severity of PVR is higher, and the failure rate of operation is higher.

Summary of the invention

The purpose of the utility model is to provide retina fixator in a kind of art, as being assisted in the complicated vitrectomy of row Help the separation fulcrum for stripping the forward and backward proliferation film of retina.

Retina fixator in this art strips the forward and backward proliferation of retina as assistance in the complicated vitrectomy of row The separation fulcrum of film, gold material, it is characterised in that generally fine needle shape: needle body is cylindrical body, and backshank end is convex globoidal, It is homalocephalus the eye of a needle that needle end, which has hole, Zhan Changdu 1/5: Hagedorn nose position along needle body axis gradual change opposite undergauge to sheet, and And elliptical aperture is reserved to end center in the middle part of sheet, the symmetrical long side of elliptical ring that edge is formed is identical as needle body outer diameter, and needle Progressive thicken to end symmetric is played from the symmetrical long side of elliptical ring and is swelled in the end of nose-ring.

The function of this retina fixator be to provide on the retina to have anchor point (or circle) in art, definitely part Retina is pressed, enables to strip proliferation film and reversely exerts oneself, assistance is completely stripped the forward and backward proliferation film of retina, basis in art Need it is any fold, be bent and can take out to required shape and completely, there is no the damage to retina and to being involved place Retina plays a protective role.This retina fixator is made of gold, and the chemical property of inert metal material is stablized, needle body two End is designed as convex arc blunt circle, will not cause to damage to eye inner tissue when applying in art, moreover it is possible to press is served to retina, it will Subretinal liquid and blood are squeezed through periphery hole to nethike embrane, so as to avoid can in Posterior pole row retina incision and drainage Bleeding caused by energy, proliferation film such as form at the generation of complication.This retina fixator is solid, and postoperative complete taking-up will not The drawbacks of having the surface of a wound, being inherently eliminated the previous perfluorocarbon liquids mode with perfluorocarbon liquids, and needle body one end is set It hooks and takes out, therefore be particularly suitable for needing to overturn view in art convenient for holding or being proliferated film hook using intraocular forceps sub-folder in respect of the eye of a needle The case where nethike embrane, to substantially increase the safety of operation and the efficiency of stripping.This product is root in gold material therefore art It is needed according to patient, is folded into arbitrary shape, it is extremely convenient to use, and this product can sterilize use repeatedly, significantly reduce patient Financial burden.

Detailed description of the invention

Fig. 1 is retina fixator main view in the design art；

Fig. 2 is retina fixator top view；

Fig. 3 is retina fixator left view；

Fig. 4 is retina fixator right view.

Specific embodiment

Retina fixator in a kind of art, as assisting to strip the forward and backward proliferation of retina in the complicated vitrectomy of row The separation fulcrum of film, gold material are shown in Fig. 1~4, it is characterised in that generally fine needle shape: needle body 1 is cylindrical body, backshank 1a End is convex globoidal, and it is homalocephalus the eye of a needle that syringe needle, which has hole, and Zhan Changdu 1/5: the intranasal side 1d of Hagedorn is along needle body axis gradual change opposite Undergauge reserves elliptical aperture 1b to end center to sheet, and in the middle part of sheet, and oval nose end 1c is semicircular arc, and arc plays end It is the continuity of long side parallel with the consistent elliptical aperture 1b of 1 outer diameter of needle body, and the oval nose end 1c and Hagedorn of homalocephalus the eye of a needle are intranasal Side 1d thickens reversely to swell, gradually to oval nose end 1c radial symmetric.

In vitrectomy, using the micro- tweezers of ophthalmology as needed by the retina fixator, i.e. needle body folds patient At the shape of needs, such as annular or arc, it is placed in by notch before needing fixed retina or under retina, thus There is the point of fixed bit and Ke Shi pressing force on retina, assisted backward power strips proliferation film from retina.When being needed in art Retina is overturn first to remove retina fixator, then be placed in the view overturn when being proliferated film under retina to be stripped It above nethike embrane or overturns retina and does not overturn retina intersection, then strip the proliferation on side at retina fixator pressing Film is directed at the eye of a needle of the retina fixator after stripping using intraocular tweezers or film hook, takes out from notch, easy to operate, convenient.

Claims (1)

1. retina fixator in a kind of art strips the forward and backward proliferation film of retina as assistance in the complicated vitrectomy of row Separation fulcrum, it is characterised in that generally fine needle shape: needle body (1) is cylindrical body, and the backshank end (1a) is convex globoidal, syringe needle Having hole is homalocephalus the eye of a needle, Zhan Changdu 1/5: the intranasal side of Hagedorn (1d) along needle body axis gradual change opposite undergauge to sheet, and It is reserved elliptical aperture (1b) in the middle part of sheet to end center, oval nose end (1c) is semicircular arc, and the end of rising of arc is and needle body (1) The continuity of the parallel long side of the consistent elliptical aperture of outer diameter (1b), and the oval nose end (1c) of homalocephalus the eye of a needle and the intranasal side of Hagedorn (1d) It is thickened reversely to swell, gradually to oval nose end (1c) radial symmetric.