RU2261673C1 - Single-use scarificator-lance for piercing finger skin - Google Patents

Abstract

FIELD: medical engineering.

SUBSTANCE: device has single-use plastic casing having a needle with piercing part inserted into it. The piercing needle part is enclosed into collapsible plastic end piece manufactured as cylinder and allows access to the piercing needle part. Cylinder diameter is greater than that of the plastic casing. The single-use plastic casing has technological window for fixing finger. The needle with piercing part is manufactured from steel wire. The piercing needle part is grinded at an angle of 25°.

EFFECT: high accuracy in controlling pierce depth; accelerated wound healing; prolonged service life.

2 cl, 1 dwg

Description

FIELD OF THE INVENTION

The invention relates to the medical industry, in particular to disposable spear scarifiers for piercing the skin of a finger when taking capillary blood, and can be used in the manufacture of disposable scarifiers.

State of the art

Known one-piece disposable scarifier made of steel tape in accordance with the requirements of GOST 19126-79, and changes No. 5 GOST 19126-79. Medical metal tools. General specifications.

The disadvantage of this scarifier is the difficulty of manufacturing and inconvenience in operation.

A device for piercing skin tissue is known, comprising a body with a needle, wherein the first and second stops are fixed to the device from opposite sides, a holder in which a replaceable needle is attached, and a third stop, the holder and the third stop being located on case between the first and second stops with the possibility of movement along the case (see US Pat. RF No. 2005413, class A 61 B 5/14, publ. 15.01.94).

The disadvantage of this device is the design complexity.

A known scarifier obtained using the method of obtaining scarifiers by cutting along a broken line a longitudinally profiled steel tape, the steel tape has a width equal to the width of the scarifier, and the broken line has a shape due to which 2/3 of the tape width is perpendicular to the edge of the tape, and then undergo a kink at an angle of 110-120 °.

The steel tape is profiled in such a way that the central part, which is 1/3 of its entire width, is deepened by the thickness of the tape (see US Pat. RF No. 2221503, class A 61 B 17/20, publ. 20.01.2004).

The disadvantage of this scarifier is the difficulty of controlling the depth of the puncture (it depends on the pressure force), since it has a triangular shape of a piercing spear, and the wide base of the spear cuts the skin surface up to 2 mm, leaving uneven edges and pushing the surface layers of the skin, and it takes a long time to heal the wound time.

The closest in technical essence and the achieved positive effect and adopted by the authors for the prototype is a disposable device for piercing the skin, consisting of a body and a needle, while 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 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 + 0.1-2 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.

In a disposable device, the needle with a stitching element and protrusions is completely made of rigid plastic.

In a disposable device, 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 ° (see US Pat. RF No. 2186536, class A 61 B 17/20).

The disadvantage of this disposable device is the design complexity.

Disclosure of invention

The technical result that can be achieved using the present invention is to control the depth of puncture, quick healing, the absence of additional packaging and special conditions during transportation and storage, increasing the shelf life of the spear scarifier.

The technical result is achieved using a disposable scarifier-spear, for piercing the skin of a finger containing a disposable plastic case, into which a needle with a piercing part is inserted, while the piercing part of the needle is installed in a creaseable plastic tip, which is made in the form of a cylinder with a diameter smaller than the diameter of the plastic case with the ability to provide access to the piercing part, and the disposable plastic case is made with a technological window, while the needle with the piercing part is made of steel dies, and the piercing part is sharpened at an angle of 25 °, and the needle has a rectangular cut.

The spear scarifier has a wide plastic base with a technological window for fixing the laboratory assistant with your fingers, which allows you to control the strength and, consequently, the depth of puncture, and the sharp stitching part easily and almost painlessly cuts the skin of the finger by 2-3 mm, while the width of the puncture is not more than 1 mm, and the edges of the wound are even. The piercing part is installed in a crushable plastic tip, which ensures the tightness of the package.

The drawing shows a disposable spear scarifier for piercing the skin of a finger.

The implementation of the invention

The disposable spear scarifier for piercing the skin of the finger contains a disposable plastic case 1, in which a needle 2 with a piercing part 3 is inserted, while the piercing part 3 of the needle 2 is installed in a creaseable plastic tip 4, which is made in the form of a cylinder with a diameter smaller than the diameter of the plastic case 1 with the possibility of providing easy access to the piercing part 3 of the needle 2, the technological window 5, made on a plastic housing 1, and the plastic housing 1 has a sufficiently wide plastic base for fixing the fingers of the laboratory assistant, which allows you to control the force, and therefore the depth of the puncture, while the needle 2 with the piercing part 3 is made of steel wire, and the piercing part 3 is sharpened at an angle of 25 ° to obtain a tip, and the needle 2 has a rectangular cut.

A disposable spear scarifier for piercing the skin of a finger is operated as follows.

From the stitching part 3 of the needle 2 located in a disposable plastic housing 1, the creaseable plastic tip 4, made in the form of a cylinder, is removed by turning 180 ° around its own axis, then the technician fixes the needle 2 with a stitching part 3 with a finger through the technological window 5 and it pierces the skin of the finger by 2-3 mm, while the width of the puncture is not more than 1 mm, and the edges of the wound are even, which ensures the amount of capillary blood sufficient for analysis without pressure, and the wound from the puncture heals quickly.

The invention in comparison with the prototype and other known technical solutions has the following advantages:

- a needle is used as the stitching part, which injures the patient less;

- fast wound healing;

- control of the depth of puncture of the skin of the finger;

- convenient to use;

- since the piercing part of the scarifier is located in a molded polyethylene tip, accidental damage to the package and infection of the patient are excluded;

- there is no need to create special conditions during storage, transportation;

- shelf life is determined by the destruction of polyethylene.

Thus, the use of new scarifiers in practical medicine will both facilitate the work of laboratory assistants and ensure the quality of laboratory hematological examination of patients.

Claims (2)

1. A disposable scarifier-spear for piercing the skin of a finger, containing a disposable plastic case in which a needle with a piercing part is inserted, characterized in that the barbed part of the needle is installed in a creaseable plastic tip, which is made in the form of a cylinder with a diameter smaller than the diameter of the plastic case with the possibility providing access to the piercing part, and a disposable plastic case is made with a technological window for fixing the finger, while the needle with the piercing part is made of steel wire, comb stitching of the needle is ground at an angle of 25 °. 2. The spear scarifier according to claim 1, characterized in that the needle has a rectangular cut.