RU2186536C2 - Disposable skin puncturing device - Google Patents

Abstract

FIELD: medicine. SUBSTANCE: skin puncturing device has casing and needle. Casing has disposable plastic tip with cylinder, and needle with puncturing member is inserted into cylinder. Needle adjoins to tip cylinder internal wall through projections made in the form of side ribs, rings or whiskers arranged on needle side wall. Width of projections L=D+0.1-2 mm, where L is width of projection, D is internal diameter of tip cylinder. Tip is adapted to be put on puncturing device. Tip cylinder internal wall has partitions facilitating retaining and centering of needle inside cylinder. Skin puncturing device is used for analytical blood sampling. EFFECT: simplified construction, convenient use and enhanced reliability in use. 3 cl, 5 dwg

Description

 The invention relates to the medical industry, in particular to devices with needles for piercing the skin in devices for taking blood for analysis.

 Known devices for piercing the skin, which are made of thin sheet stainless steel, for example, a spear scarifier "GEM" according to TU 9432-001-175478.66.94.

 Known disposable devices made of plastic, which are reinforced with a thin steel needle, for example, a sterile scarifier LANCETS SEO 120, company Autoclix, Japan.

 Known devices for piercing the skin as. 2005413 C1, containing body and needle.

 The disadvantage of the above devices is that they are difficult to manufacture, not convenient to operate, do not exclude the possibility of infection during repeated use.

In order to eliminate the above drawbacks, a disposable device for piercing the skin has been created, consisting of a body and a needle, characterized in that the body is a disposable plastic tip with a cylinder, into which a needle with a piercing element is inserted, adjacent to the walls of the inner cylinder of the tip due to tides on the side walls needles, while the width of the tides is L = D + 0.1-2 mm, where:
L is the width of the tide;
D is the inner diameter of the tip cylinder. The tip is made to be put on the punching device, and the inner walls of the tip cylinder are provided with partitions that hold and center the needle inside the cylinder.

 A disposable device is also characterized in that the needle with a piercing element and protrusions is made entirely of rigid plastic, for example polycarbonate.

The disposable device is also characterized in that the metal needle from the plate has a convex shape or the needle plate in the middle part is twisted through an angle of up to 90 ^° .

The design of the new device is illustrated by drawings, where
- figure 1 shows a plastic needle with antennae;
- in FIG. 2 - a plastic needle with a piercing element and antennae, in isometry;
- figure 3 is a complete device: a housing with a needle in the package;
- in FIG. 4 - steel needle with a piercing element and lateral antennae, in isometry;
- figure 5 - steel needle with a turn of the plate up to 90 ^o , in isometry.

The new disposable device consists of a body with a cylinder 2 and a bottom into which the needle 3 is inserted. The needle has a cutting element 4 and protrusions, ring ribs, antennae 5 on the side walls of the needle. The cutting element of the needle can be made of several sizes: up to 2 mm high, for children; up to 5 mm high, for adults. The protrusions, ribs, rings, antennae can have a thickness and width of 0.5 to 3 mm. The antennae have a tilt angle of up to 90 ^o . The width of the tides "L" is: L = D + 0.1-2 mm, where D is the inner diameter of the cylinder body.

A steel needle 6 having a cutting element 7 and side antenna 8, may have a bulge 9, for example, in the form of a half cylinder. The needle plate in the middle part 10 can be twisted at an angle of up to 90 ^o . The device is sterilely packed 11.

 The new device operates as follows.

 Unpacked device: the case with a needle is put on the cylinder of the cocked punch device. After hitting and piercing the skin, the device is discarded. Reuse of the device is not possible. This ensures absolute sterility of blood sampling. Infection is completely excluded.

 The new device provides maximum usability. The whole process of skin puncture takes a few seconds.

 The new device is simple in design and easy to operate. The case is made of medical plastics: polyethylene, polystyrene, etc. injection molding method. The assembly and packaging of new devices can be fully automated.

 The new device provides absolute sterility. When using the device - minimal skin irritation, infection is excluded, unwanted stressful situations are eliminated.

Claims (3)

1. A disposable device for piercing the skin, consisting of a body and a needle, characterized in that the body is a disposable plastic tip with a cylinder, into which a needle with a piercing element is inserted, adjacent to the walls of the inner cylinder of the tip due to tides in the form of side ribs, protrusions, rings, antennae located on the side walls of the needle, while the width of the tides is
L = D + 0.1-2mm,
where L is the width of the tide;
D is the inner diameter of the cylinder of the tip,
the tip is made to be put on the punching device, and the inner walls of the tip cylinder are provided with partitions that hold and center the needle inside the cylinder.  2. The disposable device according to claim 1, characterized in that the needle with a piercing element and protrusions is completely made of rigid plastic. 3. The disposable device according to claim 1, characterized in that the metal needle from the plate has a convex shape or the needle plate in the middle part is twisted to an angle of up to 90 ^o .

Images