CN2493185Y

CN2493185Y - Single hand operated forceps for implanting artificial crystal

Info

Publication number: CN2493185Y
Application number: CN 01240923
Authority: CN
Inventors: 何伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-03-29
Filing date: 2001-03-29
Publication date: 2002-05-29
Anticipated expiration: 2011-03-29

Abstract

The utility model discloses a crystalloid manually-embedding by single hand forceps used in the eyeball operation. The forceps is formed by a two-single-piece forceps, and the two pieces of the forceps are crossly linked and can be opened or closed by considering a joint point as a shaft. The forceps includes a hand part, a connected part and a nipping part at the front end of the forceps. An extending part of the hand part is an elastic handle. An arc of the nipping part is similar as the physiological structure of human body. A chord length of a lower piece is 19mm to 21mm; a chord height is 3mm, and the radius of a circular arc at the tip of the lower piece is 0.6mm to 1.0mm. A protuberance, which acts as a fulcrum, is arranged between two meshing faces. The physician can finish the embedment and positioning procedure of the crystalloid just by a forceps once only through the protuberance of a force bearing point, which shortens the time of the operation and alleviates the pain of the patient.

Description

The singlehanded tweezer of implanting of artificial intraocular lenses

This is novel to relate to a kind of operation on eyeball that is used for, and the artificial intraocular lenses is implanted the implantation tweezer of using in it.

Present domestic eyes cataract operation is after corneosclera is finished tunnel incision outside, the artificial intraocular lenses to be clamped with tweezers, become with eyes from the top an angle of 90 degrees (with vertical cube to), insert in the crystal capsule bag from incision.During operation, a hands is clamped conjunctiva with tweezers, and the another hands stretches into crystal with crystal positioning hook marginal position corneal incision from the eyeball both sides, stirs crystal gently, make it by the rotation of original deviation position or move to specified placement, be exposed at the outer crystal loop of capsule and all enter in the capsule.In case of necessity, with iris repositor from the top light piezocrystal body centre, make it to enter in the capsule bag.But this implantation tweezer has the following disadvantages:

(1) tip shape is all adopted in the end.Although the end has been carried out Passivation Treatment, yet in operation, still there is very big danger.Very easily cause the back capsule to break;

(2) two tweezers connecting portion width are bigger up and down.During operation on eyeball, easily cause artificial expansion to otch, it is closed that otch is difficult for, and the viscoelastic agent waste is also bigger in the art.

(3) retaining part curtailment.In often can not disposable implantation capsule bag when implanting crystal, lean on crystal positioning hook to regulate crystalline position.Prolonged operating time like this.

(4) handle position poor flexibility adopts special steel alloy to be made because existing artificial intraocular lenses implants tweezer, and elasticity is bigger.Yet as the tweezers that ophthalmologic operation is used, its elasticity requires taller, makes the tweezers feel from hard to soft, to reduce the pressure damage of tweezers to the artificial intraocular lenses.

As previously mentioned, artificial intraocular lenses's implant surgery in two steps, the doctor needs both hands to cooperate cooperation, other medical apparatus and instruments except that tweezers has been used in operation, has increased patient's misery.

This novel goal of the invention provides a kind ofly will improve the deficiency that the artificial intraocular lenses implants tweezer, making that operation becomes convenient, quick, save time, can reduce the eyeball damage, reduce the singlehanded tweezer of implanting of the artificial intraocular lenses who leads to complications.

Be to realize goal of the invention, this is novel structurally improve as follows:

The artificial intraocular lenses implants tweezer, and it is made of two monolithic tweezers, and this two monolithics tweezers twisting connects and is axle center expansible or merging with its merge point; Described tweezers comprise the retaining part of handle position, two connecting portions that are connected and its front end; The extension at described handle position is an elastomeric grip, the arc of described retaining part is near human eye's physiological structure, monolithic tweezers chord length is 19～21mm on it, action is 3mm, and its most advanced and sophisticated arc radius is 0.6mm-1.0mm, and makes the stressed fulcrum of crystal being provided with between two fields of conjugate action under closure state.Said fulcrum is to be located at second, third projection on first projection on the monolithic tweezers and the following sheet.

This novel compared with prior art beneficial effect is as follows:

1, simplify the operation course: the implantation tweezer after the improvement is very easy to the operation of doctor to operation on eyeball, only can disposablely finish crystalline implantation and location two procedures to tweezers with one, the doctor is freed from the bimanualness of system, only rely on doctor's one-handed performance can finish artificial intraocular lenses's implantation.Shorten operating time, alleviated patient's misery.

2, improve operation safety: only implant tweezer, save and use other auxiliary medical apparatus and instruments, reduced apparatus eye inner tissue is damaged with this.Increase owing to implant the most advanced and sophisticated arc radius of tweezer, strengthened the passivation ability of end, reduced the possibility that forceps tips pierces through posterior lens capsule, greatly protected the safety of back capsule; Can operate efficiently and easily by one hand, shortened operating time, reduced corneal endothelium, iris and cyst membrane damage, reduced the viscoelastic agent use amount, improved the security performance of operation, reduced the possibility that causes postoperative complication.

3, shorten the wound healing time: this tweezer connecting portion width is narrowed down by wide, has reduced the artificial expansion to otch, makes the easier closure of wound, has shortened the time of wound healing.

4, improved work efficiency: shortened and implanted the time of crystal operation process, thereby shortened the time of whole cataract operation, improved the work whole efficiency.

Description of drawings:

Fig. 1 implants tweezer contour structures sketch map for the artificial intraocular lenses;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3～Fig. 4 be on Fig. 1 retaining part A to B to protruding enlarged drawing;

Fig. 5, Fig. 7, Fig. 9 are this novel various user mode figure;

Fig. 6, Fig. 8, Figure 10 are the 1-1 of Fig. 5, the 2-2 of Fig. 7, the 3-3 enlarged drawing of Fig. 9.

In conjunction with above-mentioned accompanying drawing novel embodiment is described in detail:. referring to Fig. 1-Fig. 4, the artificial intraocular lenses implants tweezer, and it is made up of two monolithic tweezers, and two monolithic tweezers twistings connect and can merge or open; Described tweezers comprise the connecting portion b and the retaining part c of handle position a, two connections, and extension 4 thickness of described handle position a are 0.2mm, make to have certain elasticity; The arc of retaining part c is near human eye's physiological structure, monolithic chord length is 19～21mm on it, be preferably 20mm, action is 3mm, the most advanced and sophisticated arc radius of clamping end is 0.6mm-1.0mm, and between two fields of conjugate action, be provided with first, second,

third projection

1,2,3 of point action, highly be 0.3mm, its first projection 1, be located at tweezers last slice on, second,

third projection

2,3 is located on following of tweezers, its second, third two projectioies are at a distance of 12mm-2.5mm, and preferred distance is 2mm; Last slice first projection 1 and second projection 2 of following sheet are through stressed F central lines under closure state.Fulcrum projection and field of conjugate action circular arc smooth excessiveness, to reduce to crystalline pressure damage and frictionally damage, tweezers fulcrum projection is the crystal stress point, and when first, second projection of last lower fulcrum 1,2 stressed F, crystal is that the center is rotatable with the axis that its projection 1,2 forms; When 1,2,3 three stressed F of while of fulcrum projection, crystal is clamped by tweezers, this moment crystal 3 stressed F, can only be with the tweezers translation, and can not be rotated.Unclamp some hands strength lightly, make the 3rd projection 3 leave crystal, this moment can only 1,2 two stressed F of first, second projection, the crystal strength of can whipping, and the axis that forms with first, second projection 1,2 is the center, rotates back and forth, and reaches requirement for this reason until the position.

The width of two connecting portion reduces about the tweezers, and stock size is 1.8mm.For further reduction otch degree of injury changes width is 1.5mm.Make the safety of artificial intraocular lenses's implant surgery be increased to a new high degree again.

Can replace apparatuses such as former implantation tweezer, crystal positioning hook, iris repositor with this implantation tweezer, its arc that mainly is retaining part under closed fully state is near human eye's physiological structure, be convenient to doctor's operation technique more, concrete profile is seen shown in Figure 9.Extending part 4 feels of handle have been reduced crystalline accidental injury by cirrhosis elasticity, but also have guaranteed the safety of back capsule, have reduced the corneal endothelium damage, have reduced postoperative complication.

Claims

1, the singlehanded tweezer of implanting of a kind of artificial intraocular lenses, it is made of two monolithic tweezers, and its two monolithics tweezers are an expansible or merging by the connection of connecting portion twisting and with its junction point; Described tweezers comprise the retaining part (c) of handle position (a), two connecting portions that are connected (b) and its front end, the secondary part (4) of prolonging at its handle position (a) is elastomeric grip, it is characterized in that: the arc of retaining part (c) is near human eye's physiological structure, monolithic tweezers chord length is 19～21mm on it, action is 3mm, and its most advanced and sophisticated arc radius is 0.6mm～1.0mm, and also is provided with between retaining part two fields of conjugate action makes the stressed fulcrum of crystal under closure state.

2, the singlehanded tweezer of implanting of artificial intraocular lenses according to claim 1, it is characterized in that: said fulcrum is first projection (1) of the field of conjugate action, being located at retaining part (c) goes up on the monolithic tweezers, with second, third projection (2,3), be located on corresponding following, its two projection (2,3) is at a distance of 12mm～2.5mm, last slice first projection (1) and following sheet second projection (2) central lines under closure state.

3, the singlehanded tweezer of implanting of artificial intraocular lenses according to claim 2, it is characterized in that: the spacing of following second, third projection of monolithic tweezers (2,3) can be 2mm.

4, according to claim 1, the singlehanded tweezer of implanting of 2 or 3 described artificial intraocular lensess, it is characterized in that: the width of the connecting portion of monolithic tweezers (b) is 1.5mm.

5, the singlehanded tweezer of implanting of artificial intraocular lenses according to claim 4, it is characterized in that: extension (4) thickness at its handle position (a) is 0.2mm..