EA026364B1 - Cap for closure of a medical container - Google Patents

Abstract

The invention relates to a cap for closure of a medical container, in particular, to design of caps providing hermetic access to the inner space of the container. The cap for closure of a medical container comprises a flange (1) in the lower part for securing the cap to the neck of a container, a vertical side wall (2) with a cone portion (3) at the top, and a flat end wall (4) provided with a flap (5) with a spiral-like tear-off line and a ring (6) for gripping with a finger to provide sealing of the places of piercing (7). The lower plane of the end wall has a vertical wall (8) with a boss (9) forming a cavity for a sealing element (10) made of rubber or thermoplastic elastomer and having vertical bosses over the preiphery (11) of the piercing places and periphery (12) of the sealing element. On the lower plane of the end wall, over the periphery of the flap, a ring-shaped ridge (13) with an acute apex is made. The lower plane of the sealing element protrudes above the lower plane of the vertical wall, and the ring is disposed at an angle to the upper surface of the end wall.

Description

(57) The invention relates to a cap for capping a medical container, and relates to the design of caps providing hermetic access to the interior of the container. The cap for sealing the medical container contains a flange in the lower part (1) for attaching the cap to the neck of the container, a vertical side wall (2) with a conical part (3) at the top and a flat end wall (4) equipped with a valve (5) with a spiral separation line and a ring (6) for gripping with a finger, providing sealing of the puncture sites (7). On the lower plane of the end wall, a vertical wall (8) with a tide (9) is formed, forming a cavity for a sealing element (10) made of rubber or a thermoplastic elastomer having vertical tides around the perimeter of the puncture sites (11) and the perimeter of the sealing element (12) . An annular tide (13) with a sharp peak is made on the lower plane of the end wall along the perimeter of the valve. The lower plane of the sealing element protrudes above the lower plane of the vertical wall, and the ring is located at an angle to the upper surface of the end wall.

The invention relates to a cap for capping a medical container and relates to the design of caps providing tight access to the interior of the container.

Known caps with a sampling point for extracting medical fluid and an injection site, each of which is closed by a breakable part.

The disadvantage of the above design of the cap is a complex design and, as a result, a complex production technology.

The closest design to the proposed cap for capping a medical container is a cap for a container filled with medical fluid containing a flange at the bottom for attaching the cap to the neck of the container, an end wall, a side wall with tear-off parts.

The disadvantage of the above design of the cap is the complex structure and, as a result, the complex production technology and inconvenience in use when opening.

The objective of the proposed cap design is to obtain reliable sealing of access points for containers filled with medical fluids, simplicity of design, manufacturability, sterility and tightness of puncture sites, ease of use when opening.

The problem is solved as follows. The cap for sealing the medical container contains a flange in the lower part for attaching the cap to the neck of the container, a vertical side wall with a conical part at the top and a flat end wall equipped with a valve with a spiral separation line and a finger grip ring to seal the puncture sites. According to the invention, a vertical wall with a tide is formed on the lower plane of the end wall, forming a cavity for a sealing element made of rubber or a thermoplastic elastomer having vertical tides around the perimeter of the puncture sites and the perimeter of the sealing element. An annular tide with a sharp top is made on the lower plane of the end wall along the perimeter of the valve; the lower plane of the sealing element is protruding above the lower plane of the vertical wall. The ring is located at an angle to the upper surface of the end wall.

Significant differences of the invention from the prototype is the following. The manufacture on the lower plane of the end wall of the vertical wall with a tide forming a cavity for a sealing element made of rubber or a thermoplastic elastomer ensures simplicity of design and high manufacturability.

Performing on the inner surface of the vertical wall and the lower plane of the end wall of the vertical tides around the perimeter of the puncture sites and the perimeter of the sealing element ensures the reliability of the sealing of the sealed container.

A design feature of the lower plane of the sealing element made protruding above the lower plane of the vertical wall provides a snug fit of the vertical tides and, as a result, reliable sealing of the neck of the vessel in the puncture area.

The design feature of the ring, located at an angle to the upper surface of the end wall, provides easy and reliable grip of the ring with your fingers, which contributes to ease of use when opening.

The invention is illustrated by drawings.

In FIG. 1 is a cross-sectional front view of a cap; in FIG. 2 - the same, top view.

The cap for sealing the medical container, in particular, is made by injection molding and is preferably made of polyolefins, in particular PP, PE.

The cap for sealing the medical container contains a flange in the lower part (1) for attaching the cap to the neck of the container, a vertical side wall (2) with a conical part (3) at the top and a flat end wall (4) equipped with a valve (5) with a spiral separation line and a ring (6) for gripping with a finger, providing sealing of the puncture sites (7). On the lower plane of the end wall, a vertical wall (8) with a tide (9) is formed, forming a cavity for a sealing element (10) made of rubber or a thermoplastic elastomer having vertical tides around the perimeter of the puncture sites (11) and the perimeter of the sealing element (12) . An annular tide (13) with a sharp peak is made on the lower plane of the end wall along the perimeter of the valve. The lower plane of the sealing element protrudes above the lower plane of the vertical wall. The ring is not parallel to the upper surface of the end wall.

The present invention works as follows.

To open the puncture sites, the ring (6) is grasped with fingers and stretched upward so that the valve (5) is detached along the spiral lines from the end wall (4) until it is completely removed.

Compared with the prototype, the proposed cap for capping a medical container is distinguished by a simple structure, manufacturability, ease of use when opening, and also with a high degree of sterility and sealing of access points for containers filled with medical liquids.

Information sources

1. Patent EP 0766956 A1, 10/15/2003.

2. Patent No. 14162 C1, 05.15.2008.

Claims (1)

CLAIM A medical container capping cap containing a flange at the bottom for attaching the cap to the container neck, a vertical side wall with a tapered part above and a flat end wall equipped with a valve with a spiral break line and a finger grip ring that seals the puncture sites, that on the lower plane of the end wall there is a vertical wall with a tide, forming a cavity for a sealing element made of rubber or a thermoplastic elastomer, having vertical tides around the perimeter of the puncture sites and the perimeter of the sealing element, with an annular tide with a sharp apex on the lower plane of the end wall, the lower plane of the sealing element protruding above the lower plane of the vertical wall, and the ring at an angle to the upper surface of the end wall.