CN2075501U

CN2075501U - Retina electric graph recording electrode

Info

Publication number: CN2075501U
Application number: CN 90221194
Authority: CN
Inventors: 王超英
Original assignee: NORMAN INTERNATIONAL PEACE HOSPITAL PLA
Current assignee: NORMAN INTERNATIONAL PEACE HOSPITAL PLA
Priority date: 1990-09-28
Filing date: 1990-09-28
Publication date: 1991-04-24

Abstract

The utility model relates to a novel retina electric graph recording electrode. The periphery of the primary electrode in the type of a corneal contact lens is added with a scleral contact lens part for increasing contact area and preventing the electrode from loosely desquamating; the convex surface of the corneal contact lens is additionally provided with a set of eye speculum device which is composed of four cylinders for avoiding the influence of the winking actions on the record; the concave surface of the corneal contact lens replaces the wire with the metal plated film for forming the ferrule for reducing the damage to the cornea. Proved by the use of the clinic, the utility model has favorable electricity contact performance, the recorded retina electric graph is sharp and has a b wave-amplitude within 400-500 mu V, and the wave-amplitude of the retina electric graph has a stable and reliable effect.

Description

Retina electric graph recording electrode

This utility model relates to a kind of eye bioelectrical signals recording equipment, a kind of specifically novel electroretinogram recording electrode.

The cornea contact electroretinogram recording electrode of present domestic use has several forms at home, its common characteristic is that the concave surface at corneal contact lens is inlaid with an endless metal silk (spun gold commonly used, platinum filament etc.), and there is lead that it is drawn, in use have the following disadvantages: (1) is owing to only there is a corneal contact lens, contact area is less, in use get loose easily, (2) no eye speculum device, action can influence the test effect so twinkle, (3) damage of becket corneal is bigger, and the waste precious metal.

The purpose of this utility model is to provide that a kind of to have a good electricity contact, record effect stable, reduces in the test process a kind of novel electroretinogram recording electrode to the part tissue of eye damage.

The purpose of this utility model is to realize like this, increased a scleral contact lens in the neighboring of corneal contact lens, plating one all metal films replace tinsel as becket on the concave surface of corneal contact lens, and the eye speculum that is made of four columns fixedly is housed on the convex surface of corneal contact lens.

This utility model has in use increased corneal contact lens at epibulbar adhesive force, reduces in test process the damage to part tissue of eye, and the influence to record effect of effectively preventing to twinkle.

Accompanying drawing 1 is a front view of the present utility model

Accompanying drawing 2 is a left view of the present utility model

Accompanying drawing 3 is a right view of the present utility model

Below in conjunction with accompanying drawing this utility model is done to discuss in detail: as shown in Figure 1, this utility model mainly is made of plug 1, lead 2, corneal contact lens 5, plastic bushing 3, becket 7 etc., increased a scleral contact lens 6 in corneal contact lens 5 neighborings, scleral contact lens 6 can be made of one with corneal contact lens 5, also can be fixedly mounted on the periphery of corneal contact lens 5, contact area with increase and eyeball, and can make between eyeball and the corneal contact lens 5 and form negative pressure, the phenomenon that can effectively avoid corneal contact lens 5 in use to come off.Be coated with all metal films on the concave surface of corneal contact lens 5 as becket 7, can be gold-plated, also can platinum plating, becket 7 is connected with lead 2 on corneal contact lens 5 convex surfaces by sleeve pipe 3, and the other end of lead 2 is connected with plug 1.Employing replaces tinsel as becket 7 at corneal contact lens 5 concave surfaces with metal coating, has reduced the damage of corneal, and has saved precious metal.Fixedly be equipped with on the convex surface of corneal contact lens 5 column more than four can be four or more cylinder as eye speculum, influence to record effect effectively can prevent to twinkle.

This utility model proves to have good electricity contact through practical application, and record effect is stable, reliable, and the electroretinogram b wave-amplitude that is write down can reach 400-500 μ V, and effect stability, reliable.

Claims

1, a kind of novel electroretinogram recording electrode comprises corneal contact lens 5 and the becket 7, lead 2, the plug 1 that are embedded on the corneal contact lens 5, it is characterized in that:

A has increased a scleral contact lens 6 at the periphery along corneal contact lens 5, scleral contact lens 6 can with corneal contact lens 5 as one, also can be fixedly mounted on the periphery of corneal contact lens 5,

Be coated with all metal coatings on the concave surface of B corneal contact lens 5 as becket 7.

C fixedly is equipped with the eye speculum of four or more column 4 formations on the convex surface of corneal contact lens 5.

2, a kind of novel electroretinogram recording electrode according to claim 1 is characterized in that the metal coating of said formation becket 7 can adopt gold-plated film or platinum plating film.

3, a kind of novel electroretinogram recording electrode according to claim 1 is characterized in that four or more column 4 of said formation eye speculum can adopt cylinder.