DE661404C - Canals to expand the tear channel - Google Patents

Description

Narrowing of the tear duct, a common one in older people and also in younger ones Illness occurring in the person, necessitates surgery or at least continuous irrigation and probing.

The invention provides a cannula for widening the tracheal canal. This exists according to the invention from a produced by helically winding a metal wire flexible tube that is inserted into the tear duct and keeps the duct open. This tube is very flexible and can be stretched, creating gaps between the turns. One or both wire ends run out in a stretched part. It can be circular or elliptical in cross section and tapered at one end. It can be introduced into the tear duct through the point or through the nose.

It is used to advantage. Introduce an auxiliary device in the form of a probe with an am one end of a button-carrying guide wire and a pull-out hook the button through the nasal cavity and a support tube to support the wrap during Introduce. This makes handling much easier.

The drawing represents the subject matter of the invention, for example, namely show:

Fig. Ι the winding cannula,

Fig. 2 the tube probe with guide wire,

Fig. 3 the hook with the help of which the eye is pushed into the nose The probe guide wire is pulled out through the nose,

Fig. 4 - the support tube and

Fig. 5 shows how the hook at the end of the guide wire engages around the latter to pull out of the nose;

Fig. 6 shows how the cannula is drawn through the nose into the tear duct will.

The winding cannula (Fig. 1) consists of a 40 mm long noble metal wire disc winding 1, which ends at both ends or only at one end to a straight wire 2 of about 80 mm length. If the upper wire 2 is missing, the end i ^{a of} the cannula is tapered. The outside diameter of the wrap depends on whether it is inserted into the tear duct through the point of the eye or through the nose.

When inserting a thin cannula through the eye without an auxiliary device, one sticks first through the wire 2 of the cannula 1

the tear duct into the nose. The cannula is then inserted through Pulling on the wire, pushing it with a probe and turning the cannula in the direction of the turns. The probe is from the ?. Eye pulled out again, the end of the. ', The lower wire 2 of the cannula is bent into an 'eyelet and against the front wall of the Nostril squeezed.

It is much easier to introduce the cannula through the nose by means of an auxiliary

- device. After previous probing, one first pushes the tube extension 3 as shown in Fig. 2 through the point into the tear duct. At the end of the tube 3 there is a leaf 4 to be touched. A long, fine metal wire 5 runs through the tube, the end of which is thickened to a button ζ ^α , so that it cannot escape through the tube and also cannot pivot sideways in the tube, even if the diameter of the wire is smaller than the inner diameter of the tube. The tube 3 is pushed so deep that the button 5 ^{3 of} the metal wire touches the bottom 'of the nasal cavity. The tube is then raised a little, as indicated in Fig. 5, and the wire is grasped with a hook 6 and pulled out through the nose at the button $ " . When the hook is inserted into the nose, the eye of the hook is followed directed downwards and only grips around the ^{tube 3, as indicated at 6 6} in Fig. 5. When the tube 3 is now withdrawn again, the hook slides into position 6 ^a and grips the wire, as the button «through the eye of the hook According to Fig. 6, the winding cannula i, which is slightly tapered at the upper end and whose upper guide wire has been removed, and a support tube 7 are placed on the guide wire 5. The probe tube 3, the winding cannula 1 and the support tube 7 in their correct positions on the guide wire 5. Since the tube 3 is already in the tear duct, it is easily pulled out by pulling on the wire 5, and the winding cannula 1 enters the tear duct Then pulled out through the nose, whereupon the probe tube 3 and the support tube 7 are removed. The wire 2 of the nickel cannula 1 is pressed against the front wall ^. - * the nostril curved.

The winding cannula can be inserted into the tear duct in another way, z. B. with the help of a pulled into the channel silk thread, but has described lifting device proved to be the most useful. The subject of the invention, namely the arrangement of a wound cannula in the tear duct is one of these various ways of introducing unaffected.

The cannula can be longer as required or remain in the tear duct for a shorter period of time, experience has shown that it can last for several months. It does not cause any discomfort to the patient, so that he even makes its very presence entirely can forget until, for example, when Sneeze is blown out.

Claims (2)

Patent claims: 1. Cannula for widening the tear duct, consisting of a through screw-shaped Winding of a metal wire produced to be inserted into the tear duct flexible tube (1), at one or both ends of which the wire continues as a guide wire (2). 2. Auxiliary device for inserting the cannula according to claim 1 into the tear duct, characterized by a probe (3) through which a through the tear duct Guide wire with an end button (5 ”) insertable into the nasal cavity (5) is passed through a hook (6) for pulling the end (5 ^s ) of the guide wire (5) out of the nasal cavity and a second tube (7), which is pushed onto the guide wire (5) behind the wire coil (1) in order to support the coil ( 1) when it is introduced into the tear duct. 1 1 sheet of drawings