DE9208015U1 - Intraocular lens capsule spreader - Google Patents

Description

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In ophthalmology, a device used during cataract surgery after opening the anterior capsule and removing the lens nucleus and cortex to spread or stretch the lens capsule

State of the art

Up to now, the spreading arms (“haptics”) of the intraocular lens have been firmly connected to the optical part.

Pr obi em

The lens that has been used up to now is inserted into the capsular bag after opening the anterior capsule and removing the lens nucleus and cortex . The posterior capsule usually remains in place. This posterior capsule becomes cloudy postoperatively in around 15% of cases and thus causes a renewed clouding of the refractive media, the so-called posterior cataract.

Invention

This problem is solved by using the capsule spreading device described.

Object of the invention

A spreading device is described that allows work on the central part of the posterior leaf of the lens capsule.

Advantageous effects of the invention

The capsular spreader is inserted into the empty capsular bag and allows the surgeon to remove the central part of the posterior capsule through the central gap. This prevents secondary cataract formation.

Further development of the invention Advantageous embodiments of the invention are set out in the claims

2 to 6 are indicated.

The further developments according to claims 2-4 enable the introduction

the haptics, the subsequent opening of the posterior capsule and the subsequent insertion of the optical lens.

The further development according to claims 5 and 6 enables the clamping

of the empty capsular bag, then the opening of the posterior capsule and then the introduction of a conventional

Posterior chamber 1 inse . ,· - . -'- ^: '

4. Embodiment of the invention

Embodiments of the invention are explained with reference to the drawings 4.1 to 4.9.

4.1 shows a conventional intraocular lens: Haptics (H) and optics (O) are rigidly connected.

4.2 shows the position of the conventional lens in the capsular bag (CS): Manipulation of the still intact posterior capsule is made more difficult by the lens in front of it.

4.3 shows the capsule spreader: spreading device and optics are separate.

4.4 shows the capsular spreader in the capsular bag with the posterior capsule still intact.

4.5 shows the capsular spreader of the posterior capsule.

4.6 shows the capsular spreader in the capsular bag with a central gap in the posterior capsule and with an attached optic.

4.7 shows an embodiment of the capsule spreader according to Claim 5: The spreading device (SV) serves to stretch the capsular bag, to enable manipulation of the posterior capsule through its central gap and to serve as a guide rail during the implantation of a conventional intraocular lens.

4.8 and 4.9 show an embodiment of the spreading device according to claim 6: The spreading arms pushed together (4.8) can be introduced into the capsular bag, in the capsular bag (4.9) the arms are pushed apart.

in the capsular bag with central gap in

Claims (1)

2 - S c Itlvji t &zgr;£&khgr; r» s jpxrii c Ii c^ Claim 1: Spreading device for inserting an artificial intraocular lens into the capsular bag of the eye lens with at least one spreading arm which is designed to be insertable into the capsular bag, characterized in that the spreading device has a recess in front of the center of the posterior capsule, which allows manipulation of the center of the posterior capsule. Claim 2 : Spreading device according to claim 1, characterized in that the middle part is designed to accommodate a refracting lens. Claim 3 : Spreading device according to claim 2, characterized in that the lens is held by means of a clip. Claim 4 : Spreading device according to claim 2, characterized in that the lens is fixed with suture. Claim 5 : Spreading device according to claim 1, characterized by a spatula-shaped surface for insertion into the capsular bag, the contour of the surface being adapted to the course of the capsular bag edge. Claim 6 : Spreading device according to claim 1, characterized by a substantially F-shaped structure with a support arm to which two spreading arms are connected, wherein one spreading arm is designed to be movable relative to the other spreading arm and wherein the shape of the two spreading arms is adapted to the course of the capsular bag edge.