SU1435246A1 - Arrangement for puncture and catheterization - Google Patents

Abstract

The invention relates to medical technology. To reduce the morbidity with the introduction of a catheter of a given length, the device contains a hollow needle 1, an outer cylinder 2 with a measuring scale and an inner cylinder 4 with through axial channels. The outer cylinder 2 has grooves 5 in which the advancement mechanism of the catheter 6 is placed in the form of clamps 7 fixed on the inner cylinder 4. Spring 8 is located between the clamps 7. 3 Il.

Description

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ABOUT)

The invention relates to medical technology, in particular to devices for puncture and catheterization.

The purpose of the invention is to reduce the trauma when introducing a catheter of a predetermined length,

FIG. 1 shows the device d. Puncture and catheterization, incision; in fig. 2 - the same general view; in fig. 3 shows the node I in FIG. one.

The device for puncture and catheterization contains a hollow needle 1, an outer cylinder 2 with a measuring scale 3 and an inner cylinder 4 with through axial channels. The outer cylinder 2 is called 5, in which the movement mechanism of the catheter 6 is located in the form of clamps 7 fixed to the inner cylinder 4. Spring 8 is located between the clamps 7. When the spring 8 of clamp 9 is pulled, the inner cylinder 4 leaves the outer cylinder 2, releasing the lock clamp 9, the spring 8, reducing, re-inserts the inner cylinder 4 into the outer cylinder 2. Krenlenie clamps 7 at an acute angle to the longitudinal axis of the device creates conditions for one-way movement of the catheter, 6. The opposite movement of the catheter 6 is impossible, since the ends of the clamps 9 prevent it from resting against the catheter 6.

The device works as follows.

The floor nupcioppa needle 1 with the catheters held through its lumen and cylinders 2 and 4 of the catheters. 6 is inserted into the tissues of the body at the site of the puncture, after which the spring 8 stretches out, i.e. telescopic cylinders are derived from one another. Body tissues prevent the exit of the catheter 6 from I1 ly 1, keeping the spring 8 in the stretched state. The needle 1 is held deeper and when its end enters the vessel, space or cavity, where the catheter is prevented from exiting the 6-nit line, the spring 8 contracts and pushes the catheter 6 out of the needle 1 with the retainer 7 of the inner cylinder 4 by re-stretching the spring 8 but marking on the device

the catheter 6 is held in the object of the puncture for the required distance, after which the needle is removed from the tissues and removed from the catheter 6. The spring, calibrated at 0.1 kgf, is stretched to a different one, depending on

0 of the object of puncture, the distance, for example, by 4-5 mm at the puncture of the vessels and 20 mm at the puncture of the enidural space.

The proposed device has a multi-purpose appointment for special catheters, such as vascular, cardiac, epidural, pleural, etc., is completed with a set of puncture needles and trocars of the appropriate purpose and provides simultaneously with puncture and catheterization, reducing the time of manipulation. , making it safer, eliminating the change of mandrel or stylet to the catheter during the operation, and more accurate, allows you to dose the depth of insertion of the catheter.

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Claims (1)

Invention Formula A device for puncture and catheterization, containing a new needle, an outer cylinder with an measuring scale, an inner cylinder, and a spring-loaded catheter advancement mechanism, characterized in that, in order to reduce the morbidity with the insertion of a catheter of a given length, the outer cylinder has grooves that are - a propulsion mechanism for advancing the catheter in the form of retainers attached to the inner cylinder, while the spring is located between the latches, and the cylinders are made with a through axial channel.