RU2783790C2 - Device for aspiration of physiological fluid, mainly from nasal cavity - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to a device for aspiration of physiological fluid being in the nasal cavity, using a vacuum aspirator. The device contains a case with a suction inlet and an outlet and a connecting pipe for connection of the outlet of the case to a vacuum source. The case consists of coaxial suction and drain bells, between which a central element is placed. The suction bell has a conical configuration and a hole at an end opposite to the central element, into which a torch-shaped element is introduced. The drain bell is an element with conicity decreasing in a direction opposite to the central element. In the outlet, there is a connecting pipe located coaxially with the hole of the suction bell. An upper part of the connecting pipe passes to the drain bell in a direction of the central element, and its lower part passes beyond a protrusion formed around the hole of the drain bell. The central element consists of a receiving space and a disc with holes, which passes to case walls.

EFFECT: reliable suction and storage of diluted aqueous physiological fluids.

5 cl, 3 dwg

Description

The field to which the invention relates

The invention relates to a device for aspiration (removal by suction) of a physiological fluid, in particular a fluid located in the nasal cavity, using a vacuum source, preferably a vacuum aspirator, containing a housing configured to receive a collection vessel having a suction inlet and an outlet, as well as a connecting tube provided with a connecting element for connecting the outlet to a vacuum source.

State of the art

A wide variety of devices for removing unwanted exudates from the human body are known from the prior art. An example of known devices for aspirating liquids from the nasal cavity is a pipette with a rubber cap, in which the liquid is aspirated using a vacuum created by manually pressing this cap. A common disadvantage of such devices is that they do not completely remove exudate and, moreover, are unsuitable in situations where their reuse is required, or such reuse is associated with a risk of infection.

To solve this problem, the Hungarian patent HU 215563 proposed a device that can be connected to a vacuum aspirator and equipped with a collection vessel for collecting the removed physiological fluid.

The prior art also includes a number of technical solutions regarding the problems of operation of such devices.

Such solutions are disclosed in the descriptions of utility models Nos. HU 3471 and HU 3472, in which the suction head of the device is connected to a collection vessel, and the device itself consists of connected with the possibility of separating the lower and upper parts of the conical and arcuate shape.

A common disadvantage of the known devices is that the collection vessel of the device in many cases does not provide for the retention of physiological fluid, as a result of which exudate enters the connecting tube of the vacuum aspirator (or into the aspirator itself) under the action of the suction effect caused by the supply of vacuum, and this leads to unwanted pollution.

The severity of these phenomena depends on the consistency of the sucked liquid.

In recent years, pharmaceutical companies have introduced a range of purportedly antibacterial/medical nasal sprays that can dilute exudate or reduce its consistency.

However, the diluted exudate has a somewhat watery consistency, and therefore, using the known devices, it is not possible to ensure its reliable suction, since the air flow created by the vacuum can wash it out of the collection vessel.

Disclosure of the essence of the invention

The aim of the invention is to develop a device in which, while maintaining the advantageous features of the known technical solutions, reliable suction and storage of dilute aqueous physiological fluids would also be ensured.

This goal has been achieved by developing a device for aspirating physiological fluid in the nasal cavity using a vacuum aspirator, which includes a body having a suction inlet and outlet and a surrounding space for collecting physiological fluid from the nasal cavity, and a connecting tube, which is made with the possibility of attaching the outlet of the housing to a vacuum source and is equipped with a connecting element.

The device is characterized in that the housing consists of two coaxial parts - a suction socket and a drain socket, while a central element is placed between the suction socket and the drain socket, and the suction socket has a conical configuration and is provided with a hole at its end opposite to the specified central element, and in the opening, an element is introduced, which is a torch-shaped element, which has a suction cone configured to remove physiological fluid when connected to the hole, and a conical part extending from the opening of the suction socket along the axis of the suction socket into the central element, and the drain socket forming the specified space for collection of physiological fluid from the nasal cavity, is an element with a taper decreasing in the direction opposite to the central element, while in the specified outlet there is a connecting tube located coaxial with the opening of the suction socket, and the upper part of the connecting tube passes into the drain socket in the direction of the central element, and its lower part passes beyond the protrusion formed around the opening of the drain socket, while the central element consists of a receiving space and a disk that extends to the walls of the housing , covers the receiving space and has holes.

In accordance with one of the preferred embodiments of the device according to the invention, the central element consists of a receiving space and a disk made with the possibility of covering the receiving space, while holes are drilled on the surface of the disk, and the components of the central element are made in one piece.

In accordance with another preferred embodiment of the device according to the invention, the suction bell has protrusions in its lower part connected to the drain bell, and the drain bell has sockets located in its upper part and configured to receive the projection of the suction bell.

According to a further preferred embodiment of the device according to the invention, the upper part of the connecting tube, located in the lower part of the spout, extends towards the central element, while its lower part extends over the spout, while at its lower free end the spout has protrusions running parallel to the bottom of the connecting tube.

In accordance with all preferred embodiments of the device according to the invention, the suction bell and the outlet bell have a slightly conical configuration, while the suction bell, the outlet bell, their components and the central element, as well as the connecting elements, and in particular the torch-shaped element provided with a suction cone, made of plastic.

Brief description of the drawings

Below is a detailed description of one of the preferred embodiments of the proposed device with reference to the attached drawings, where:

fig. 1 is a sectional view of a device according to the invention,

fig. 2 is a sectional view of the central element of the device shown in FIG. one,

fig. 3 is a plan view of the central element illustrated in FIG. 2.

Implementation of the invention

The device 1 according to the invention is designed to aspirate (remove by suction) a physiological fluid, especially the fluid in the nasal cavity, and can preferably be connected to the suction tube of a vacuum aspirator.

This device 1 consists of a suction socket 2 and a drain socket 3 connected with the possibility of separation. A central element 4 is placed between said suction socket 2 and the drain socket 3.

The suction socket 2 is configured to receive a torch-like element 5 with a removable suction cone 6, while the lower part of the torch-like element 5 passes into the receiving space 14 of the central element 4.

In the lower part of the drain socket 3 there is a connecting tube 7, coaxial with a torch-shaped element 5 located in the suction tube 2, while its upper part 8 extends towards the central element 4 inside the drain socket 3, and its lower part 9 extends beyond the end of the drain socket 3 to form a connecting pin capable of receiving a connecting element.

The lower part of the drain socket 3 is provided with a protrusion 10 which is parallel to the lower part 9 of the connecting tube 7 so that together with the lower part 9 of the connecting tube 7 it forms a socket adapted to receive a connecting element not shown in the drawings.

In FIG. 2 is a sectional view illustrating the central element 4 of the apparatus 1 according to the invention, which is formed essentially by a receiving space 14 and a disk 13 which is adjacent to and integral with the receiving space 14, the disk 13 having holes 15 with a diameter D (see Fig. 3).

The proposed device works as follows.

When the device 1 is in a state of readiness for operation, the drain socket 3 and the suction socket 2 are connected (latched) to each other. To ensure a reliable connection, the protrusion 11 of the suction socket 2 is inserted into the socket 12, made on the upper part of the drain socket 3, after which the suction socket 2 and the drain socket 3 are connected to each other by slightly turning the suction socket 2 along the drain socket 3.

It should be noted that the protrusion 11 of the suction socket 2 and the socket 12 of the drain socket 3 can be configured in such a way that the connection is carried out exclusively by snapping (fixing) the protrusion 11 into the socket 12 in the process of connecting the suction socket 2 to the drain socket 3, without performing any or additional operations.

After that, some sections of the torch element 5 are inserted into the hole 16 located in the upper part of the suction socket 2, while the lower part of the "torch" ends in the receiving space 14 of the central element 4 of the suction socket 2. Then the suction socket 6 is placed in the upper hole of the torch element 5 .

It should be borne in mind that the torch-shaped element 5 and the suction cone 6 can also be made as a single unit.

Further, a connecting element is attached to the lower part 9 of the drain socket 3, i.e. a flexible plastic tube, while the connecting element is an element of a known type, made with the possibility of facilitating the connection of the device 1 to the suction tube of a vacuum aspirator located at the other end of the connecting element, opposite to to drain socket 3.

The device is now ready to aspirate physiological fluid and can be activated by inserting the suction cone 6 into the child's nostril and then aspirating this fluid using the vacuum created by the aspirator.

A mixture of air with physiological fluid, circulating at a high speed, of the order of 1.5-2 m/s, passes through the suction cone 6 and 5 of the torch-shaped element 5 into the receiving space 14 of the central element 4, where the flow direction is reversed, while the liquid due to its inertia, it is sprayed on the walls of the suction socket 2, and then accumulates in the lower part of the drain socket 3, while the air continues to move freely, since there is more than a thousand times the difference in specific gravity between liquid and air.

Due to a sharp increase in the passage diameter, the air flow velocity decreases significantly, up to 1-2 cm / s, so that it can no longer remove the settled liquid, even if it turns out to be diluted to an almost watery consistency.

Under the action of vacuum, the air moves even further along the connecting tube 7 of the drain socket 3 of the device 1, which is designed to prevent the exit of liquid from the device 1 in any orientation in space.

Due to this configuration of the device 1, it can hold approximately 5-6 cm ^{3 of} liquid (depending on its density) at any given time, which is quite enough for a single session of aspiration of physiological fluid.

At the end of use, you can disassemble the device into separate components, and then proceed to clean it and, if necessary, sterilize it, which are not difficult.

The advantage of the device according to the invention is that it provides reliable suction of liquids that accumulate in hard-to-reach cavities, regardless of their density. Aspirated physiological fluids can be securely retained in the device with complete prevention of their entry into the suction system.

List of reference symbols

1 device

2 Suction socket

3 Drain socket

4 Central element (sun gear)

5 Torch element

6 Suction cone

7 Connecting tube

8 Top

9 Bottom

10 ledge

11 Ledge

12 nest

13 Disk

14 Receiving space

15 Hole

16 Hole

Claims (5)

1. A device for aspiration of physiological fluid in the nasal cavity using a vacuum aspirator, comprising a housing having a suction inlet and an outlet and a surrounding space for collecting physiological fluid from the nasal cavity, and a connecting tube, which is configured to connect the outlet of the body to the vacuum source and is equipped with a connecting element, characterized in that the body consists of two coaxial parts - a suction socket and a drain socket, while a central element is placed between the suction socket and the drain socket, and the suction socket has a conical configuration and is provided with a hole at its end , opposite to the specified central element, and an element is introduced into the hole, which is a torch-shaped element, which has a suction cone configured to remove physiological fluid when connected to the hole, and a conical part, about extending from the opening of the suction bell along the axis of the suction bell into the central element, and the drain bell, forming the specified space for collecting physiological fluid from the nasal cavity, is an element with a taper decreasing in the direction opposite to the central element, while in the specified outlet the hole is a connecting tube located coaxially with the opening of the suction socket, and the upper part of the connecting tube passes into the drain socket in the direction of the central element, and its lower part passes beyond the protrusion formed around the opening of the drain socket, while the central element consists of a receiving space and a disk , which passes to the walls of the housing, covers the receiving space and has holes. 2. The device according to claim 1, characterized in that the receiving space of the central element is a cylindrical element that is open in the direction of the opening of the suction socket, is configured to receive the lower end of the torch-shaped element located in the hole, is closed in the direction of the connecting tube of the drain socket and located coaxially with the axis of the suction socket and the drain socket, while the inner part of the connecting tube of the drain socket ends under the receiving space of the central element. 3. The device according to claim. 1 or 2, characterized in that the specified parts of the central element - the receiving space and the disk, made with the possibility of its coverage - are made in one piece. 4. The device according to any one of paragraphs. 1-3, characterized in that the suction socket contains a protrusion in its lower part, where the suction socket is connected to the drain socket, while the drain socket contains a socket located in its upper part and configured to receive the suction socket protrusion. 5. The device according to any one of paragraphs. 1-4, characterized in that the suction socket, the drain socket, their components and the central element, as well as the elements connected to the suction socket, and in particular, the torch-shaped element equipped with a suction cone, are made of plastic.

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