Syringe

 

(57) Abstract:

Use for injection. The essence of the invention: in the body of the syringe is placed a piston and rod. The rod has a container associated with placed in the channel of the piston supporting member by means of pins from legkorazmyvaemykh material. The container is placed a spring mounted on the support element and through the grip on the container, the channel of the piston is closed by a cover from legkoperevarivaemye material. Saralaya dog the support element has the possibility of perforating the cover and the connection with the covering bracket needle, which has the ability to move into the housing. 3 C. p. F.-ly, 9 Il.

The invention relates to medical technology and relates to a device which automatically bezdeystvuete hypodermic needle of the syringe after its use, and it automatically does so equipped syringes again unused.

Known syringe containing a cylindrical housing, in which, with the possibility of longitudinal displacement has a piston with a hollow shaft and which is made with a lug for attaching the needle, with the possibility of movement in the body.

In the known W Rodamco and not automated. The needle remains in the body until someone will not cause a shift of the piston in the housing, urging her appearance, which can lead to infection by accidental injection already used needle.

Known syringe is hard to use and does not provide warranty disposable syringe and needle.

The main task of the invention consists in the fact that at the unchanged form and use of traditional syringe to provide light industry able to produce the syringe with one minor additional expense and give the user the ability to inject with confidence that the syringe accidentally will not be able again to be used.

This task is achieved by the fact that the syringe, comprising a housing in which is placed a piston with a hollow stem and the tip of which is fixed for movement in the housing hollow needle, is further provided with a spring and mounted respectively in stock and made in the piston channel in a cylindrical container and a support element with siteplease dog, which are interconnected with the possibility of separation, and the spring on the one hand is connected with the container, and the e covering the bracket.

In a preferred implementation of the syringe container is made open at both ends and with a shoulder on one of them, which are available in made in the cap grooves, and a spring fastened by hooks at the other end of the container to which the supporting element is connected via at least one pin of torn material, and the channel of the piston from the side of the tip of the closed lid of legkoperevarivaemye material, and the needle clamp which is connected to the housing by means of an explosive element, mounted in the tip with a smooth passage through the sealing gasket at the base.

The condition of the automatic re-allocation of the needle through the dogs is the latest pressure caused by movement of the piston to the full displacement of fluid from the syringe through the same needle. This operation allows to hollow needle was given in the syringe automatically, which is less dangerous and easier.

Other advantages of this invention are excessive simplicity of construction and Assembly, and very little additional cost compared with a conventional syringe; preservation of identical type and use of traditional syringe; Bespalko once.

In Fig.1 shows a syringe, ready for use; Fig.2 syringe with a laid back needle; Fig.3 syringe with the piston in the almost end position when performing injection; Fig.4 the time of engagement of the needle with siteplease dog; Fig.5 the needle; Fig.6 a fragment of the syringe from the side of the handpiece of Fig. 7 the piston; Fig.8 the container of Fig.9 spring support element.

The syringe comprises a cylindrical housing 1, which has a piston 2 with channel 3 and the hollow shaft 4 and tip 5 which is placed a hollow needle 6 with the cover bracket 7. The needle 6 is fixed in the tip 5 using the base 8, which is connected with a tip 5 through is made in the base 8 and the tip 5, respectively, of the projections 9 and grooves 10. Base 8 is made with a sealing gasket 11, through which the needle 6 has a smooth passage and which is installed in the tip 5. The bracket 7 of the needle 6 is connected to the housing 1 by means of the bursting element 12, made in the form of a membrane from an appropriate plastic material.

In the channel 3 of the piston 2 is posted supporting element 13 with siteplease dog 14. The stem 4 has a hollow cylindrical container 15.

The container 15 is made odre 2 has an elastic cap 18 with the cover 19, closing the channel 3 of the piston 2 and is made of legkoperevarivaemye material. In channel 3 close the cover 19 is placed saralaya dog 14 of the support element 13.

In the side walls of the container 15 with holes to install the two pins 20 of legkorazmyvaemykh material which are placed in the grooves 21 of the support element 13, i.e. by means of pins 20 of the container 15 is connected with the supporting member 13.

On the supporting element 13 is fixed one end is placed in the container 15 helical tension spring 22, the other end of which is connected with the grip 23, fixed to the container 15 from the side opposite to the flange 16.

The syringe is used as follows.

The fence in the medicinal liquid is done in the traditional way. When injected at the last stage activated to release all the liquid through the needle 6 pressure allows the dog 14 to perforate the cover 19. This also contributes to the fact that is made of elastic material, the cap 18 under the action of activated pressure becomes thinner.

The pawl 14 engages behind a hollow bulge bracket 7 needles 6 and at the same time under the action of the above-mentioned pressure rupture pins 20, results to return to a compressed state, there is a rupture element 12 and the needle 6, smoothly moving in the base 8 and the sealing strip 11, is drawn into the container 15, which provides a single use syringe because of the impossibility of deducing the needle to its original state.

1. A SYRINGE containing a cylindrical housing, in which, with the possibility of longitudinal displacement has a piston with a hollow shaft and which is made with a lug for attaching a hollow needle, having the ability to move in the housing, characterized in that it is supplied by a spring and mounted respectively in stock and made in the piston channel in a cylindrical container and a support element with siteplease dog, which are interconnected with the possibility of separation, and the spring on the one hand is connected with the container, and on the other with a support element, saralaya dog which has the ability to connect with custom needle cover bracket.

2. The syringe under item 1, characterized in that the container is made open at both ends and with a shoulder on one of them, which are available in made in the piston grooves, and a spring fastened by hooks at the other end of the container to which the supporting element is connected to p is applied at a specified cap of legkoperevarivaemye material, and the needle clamp which is connected to the housing by means of an explosive element, mounted in the tip through the bottom with a smooth passage through the seal gasket.

3. The syringe under item 2, characterized in that the piston-side handpiece equipped with a flexible cap.

4. The syringe under item 2, characterized in that the two pins.

 

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