RU177770U1 - UNIVERSAL NEEDLE FOR REMOVAL OF MEDICAL NEEDLES - Google Patents

Abstract

The utility model relates to the disposal of used needles of medical syringes. The needle stripper contains a membrane made in a partition designed to close the loading opening of the container for collecting medical waste. A curved cutout with a central hole is located in the membrane, while cuts are made in the membrane dividing it into eight equal sectors (petals). The tops of the petals bounding the central hole have a slice, and the arc of each sector is cut by a radial slot that intersects the chord of the sector. Using the claimed utility model allows to increase the safety of the needle puller, especially when using containers for the disposal of medical waste with a large volume (300-1000 needles), and makes it possible to use plastics in the manufacture of needle pullers after their secondary processing, that is, characterized by lower elasticity. 3 of FIG.

Description

The invention relates to the disposal of used medical syringe needles.

The collection of used needles of medical syringes for disposal is carried out in containers, the loading opening of which is equipped with a partition with stepped cut-outs or in the form of petals or other figures that ensure engagement with the head of the medical needle to remove it from the syringe.

Known universal needle puller for removing medical needles, made in the form of a partition of a container for medical waste, equipped with two curly star-shaped holes formed by teeth made along the perimeter of each hole. The holes on the outer protrusions of the teeth have diameters and are connected by a slot. The diameter of the first hole along the outer protrusions of the teeth is smaller than the diameter of the second hole, and is selected from the condition of engaging the longitudinal relief protrusions made on the head of the medical needle with the teeth of the first hole when the needle is rotated in the first hole, the diameter of the second hole is selected from the provision in it free placement of the cannula of the syringe and the possibility of tilting the syringe in the hole (RF Patent for the invention No. 2569430, IPC B65F 1/00, publ. 10.27.2015).

ее площади) предопределяет наличие конвекционных потоков из заполняемого контейнера, которые могут приводить к контаминации (бактериальное заражение) внутренней поверхности крышки, что не желательно в связи с ее многократным открыванием-закрыванием в процессе заполнения контейнеров, особенно контейнеров большого объема (на 300-1000 игл).The disadvantage of this invention is that the versatility of the needle puller is achieved due to the large number of different cutouts designed for needles of various types and diameters, which complicates the design of the needle puller. In addition, a large area of holes in the partition (more

its area) determines the presence of convection flows from the filled container, which can lead to contamination (bacterial infection) of the inner surface of the lid, which is not desirable due to its multiple opening and closing during filling of containers, especially large containers (300-1000 needles )

Known universal needle puller for removing medical needles, containing a membrane (septum) that overlaps the loading hole of the container (container) for collecting medical waste, in which a shaped cut is made to ensure the interaction of the edges of the cut with embossed protrusions on the needle head. In the membrane in the direction from the periphery of the membrane to its center, cuts were made dividing the membrane into four equal sectors, forming petals equipped with bevels made on each side section of each petal, with an angle formed between two adjacent bevels of adjacent petals, the apex of which is directed to the periphery membranes. A wedge-shaped cutout, the apex of which is directed toward the periphery of the membrane, that is, the teeth of the curly cut-out is formed by bevels and wedge-shaped cutouts (the RF Patent for invention No. 2566054, IPC B65F 1/00, publ. 10/20/2015 - prototype).

However, the bending of the petals in the 4-blade needle puller during operation is carried out along the chord (a straight segment connecting two points of the curve) connecting the peripheral ends of the cuts, while the angle between the side of the petal and the chord is sharp, which increases the plastic stress in this region membranes, leading to the appearance of cracks and, as a consequence, to the loss of operability of the product.

The disadvantage of this invention is the low safety of the product, especially when using containers for the disposal of medical waste with a large volume (300-1000 needles) and high requirements for the elasticity of plastics during operation of the product.

The objective of the claimed utility model is aimed at eliminating these drawbacks, that is, improving performance by maintaining the efficiency of the needle stripper, especially when using containers for the disposal of medical waste with a large volume (300-1000 needles) and to ensure the possibility of use in the manufacture of needle strippers plastics after their recycling, characterized by lower elasticity.

The specified technical result is achieved by the fact that in a universal needle puller for removing medical needles containing a membrane made of elastic material, designed to overlap the loading opening of the container for collecting medical waste, a curved cutout with a central hole to ensure the interaction of the edges of the cutout with embossed protrusions on the needle head . In the membrane in the direction from its periphery to the center, cuts were made dividing the membrane into equal sectors, forming petals equipped with bevels made on each side of each petal and directed from the top of the petal bounding the central hole to the periphery of the membrane, while between two adjacent an angle is formed by the bevels of adjacent lobes, the apex of which is directed towards the periphery of the membrane, according to the claimed utility model, cuts made in the direction from the periphery to the center divide the membrane by there are equal sectors, and the top of the petal bounding the central hole has a slice, while the arc of each sector is cut by a radial cut that intersects the chord of the sector, and the length of the bevel made on each side section of each petal is no more than 1/3 of the length of the side section of each petal .

The essence of the utility model is as follows. In the manufacture of needle strippers, it is more advisable to use recycled materials, as cheaper, coming from plastic processing facilities. However, during processing, the plastic loses its elasticity, becomes more fragile, which limits the use of cheap plastics due to the low elasticity characteristics in the production of 4 blade needle pullers due to the presence of a long line of bending of the petals (along the chord of the sector) during operation, which determines the presence of acute angle between the bend line and the side of the petal, at which a high voltage is created, leading to cracks in this area and, as a result, to the loss of operability of the needle puller especially when working with containers of large volume (300-1000 needles). The use of 8 petals in the needle puller according to the claimed utility model halves the length of the bending line, increasing the value of the bending angle and reducing stress at its apex, and radial cuts along the circle line with a radius equal to the length from the central axis of the serrated hole to the peripheral end section, shorten the bending line by half, that is, the needle puller operates as a 16-blade, but with the elasticity of the petals. If the needle puller were made of 16 petals, then the product would be characterized by functional unsuitability due to the low elasticity of the petals. The presence of radial slots on the assumed circumference in the inventive needle puller allows minimizing the length of the bend of the petal and increasing the bending angle to almost 90, which virtually eliminates stress during the bending of the petal and allows using plastic materials from recycled materials with low elasticity in the manufacture of the needle puller.

длины бокового участка лепестка, вершина лепестка со срезом будет отодвинута в сторону периферии мембраны, увеличивая диаметр центрального отверстия.The limitation of the length of the bevels of the side sections of the petals (not more than 1/3 of the length of the side section) is dictated by the minimum diameter of the cannula used in the medical practice of syringes. So, for example, with the length of the bevel

the length of the lateral section of the petal, the top of the petal with a slice will be moved towards the periphery of the membrane, increasing the diameter of the central hole.

The proposed needle puller is illustrated by drawings:

- FIG. 1 - a membrane in the partition overlapping the boot opening;

- FIG. 2 - layout of the inventive needle puller with a hole for collecting cotton swabs;

- FIG. 3 - dynamics of changing the size of the angle between the chords and the side of the petal.

A universal needle puller for removing medical needles contains a membrane 1 for closing the loading opening of the container for collecting medical waste, an opening 2 located in the center of the membrane, the diameter of which is selected taking into account the possibility of deviation of the petals 3 when the needle heads interact with them. The plane of the membrane 1 through 4 diametrical sections 4 with the point of intersection on the axis of symmetry of the hole 2 is divided into 8 equal sectors, which are petals 3, equipped with bevels 5, made on each side section of each petal 3 and directed from the top 6 of the petal bounding the Central hole 2, to the periphery of the membrane 1, while the top 6 of the petal has a slice 7 (that is, ends with a line, not a point), providing a greater degree of contact of the relief protrusions on the head of the screwed needles in the process their removal. The arcs 8 of each sector (lobe 3) are dissected by a radial slot 9 intersecting the chord 10 of each sector (lobe 3), while the membrane 1 is inscribed in a partition overlapping the loading opening of the container.

In FIG. Figure 3 shows the dynamics of the change in the size of the angle between the chord 11 and the side of the petal with a 4-petal design of the needle puller, between the chord 10 and the side of the petal with the 8-petal version and between the chord 12 and the side of the petal when cutting the circle line and the chord 12.

Needle Puller Operation:

The removal of needles from syringes of the Luer type takes place in a standard way - the needle of the used syringe is inserted into the central part of the membrane and is fixed due to the figured central cut-out and the elastic petals of the membrane. To remove the needle, lightly press the syringe flask all the way. Membrane petals diverge by passing a needle inside a medical waste container. Then the syringe is pulled out by reverse movement. In this case, the concave petals, falling into the gap between the beginning of the syringe cannula and the base of the needle head, cling to this base, pulling the needle from the cannula and dropping it into the container. Removing the needle from the syringe and then dropping it into the container is done with one movement and one hand.

In order to remove the needle that is screwed onto the tip of the syringe (for example, in syringe syringes), the needle is inserted into the central hole until the edges of the petals bounding the central hole interact with the lateral longitudinal relief projections on the outer surface of the needle head. Further, making circular movements of the syringe, unscrew the needle from the tip of the syringe. Proper engagement of the membrane petals with the needle head when loosening the connection between the needle head and the tip of the syringe is ensured by the serrated shape of the perimeter of the central hole and the presence of a cut of the tip of the petal, which increases the degree of engagement. The serrated shape of the perimeter of the Central hole is formed by bevels made on the side sections of the petals, provides reliable engagement of the needle puller with the needle head.

According to the claimed utility model, the universal needle stripper can be used as an independent element in the membrane designed to overlap the loading opening of the container for collecting medical needles (Fig. 1), providing removal of needles from Luer syringes and from karpulny syringes, with a maximum degree of overlap of the internal container cavities (only one hole), which is necessary when working with especially dangerous microbiological material, and when arranging with other holes, for example, with holes for recycling cotton there ponows when they are jointly placed on a membrane overlapping the feed opening (Fig. 2).

Thus, the use of the claimed utility model allows maintaining the efficiency of the needle stripper, especially when using containers for the disposal of medical waste with a large volume (300-1000 needles), and makes it possible to use plastics after their recycling, which are characterized by lower elasticity.

Claims (1)

A universal needle puller for removing medical needles, containing a membrane made of elastic material designed to overlap the loading opening of the container for collecting medical waste, a curved cutout with a central hole to ensure the interaction of the edges of the cutout with embossed protrusions on the needle head, while in the membrane in the direction from cuts are made in its periphery to the center, dividing the membrane into equal sectors, forming petals equipped with bevels made on each side section of each wood and directed from the top of the petal bounding the central hole to the periphery of the membrane, while an angle is formed between two adjacent bevels of the adjacent petals, the apex of which is directed to the periphery of the membrane, characterized in that the cuts made in the direction from the periphery to the center divide the membrane into eight equal sectors, and the top of the petal bounding the central hole has a slice, while the arc of each sector is dissected by a radial slot that intersects the chord of the sector, and the length of the bevel made on each side section of each petal is not more than 1/3 of the length of the side section of each petal.

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