Needle for insulin injection
Technical Field
The invention relates to a needle for insulin injection, and belongs to the field of medical instruments.
Background
Many people suffer from diabetes. Because of their diabetes, many of them have to inject several times a day, usually after eating, and therefore need to carry insulin syringes with them wherever they go. There are currently many different designs of insulin syringes of more or less complex with which the dose (i.e. the number of units to be injected) can be set and which contain several doses of insulin. In the prior art, an insulin syringe and an injection needle are separately arranged, when insulin injection is needed, the injection needle is arranged on the syringe for injection, the injection needle is removed and discarded after the injection is finished, and the syringe is arranged for next use. The existing injection needle is only wrapped by an outer package, and after the outer package is torn off, the injection needle is exposed to air for a period of time. When insulin injection is carried out under the condition of better indoor air quality, the injection needle can not be seriously polluted when being exposed in the air for a short time. However, when going out outdoors, if insulin injection is required, the injection needle is exposed to the complicated outdoor conditions after being torn off the package, and the needle is seriously polluted.
Disclosure of Invention
Aiming at the defects that the prior art is insufficient that when going out outdoors, if insulin injection is carried out, an injection needle can be exposed to outdoor complex conditions after being torn off and packaged, and the needle can be seriously polluted, the needle for insulin injection is provided.
In order to solve the technical problems, the invention adopts the technical scheme that the needle for insulin injection comprises a front-end outer sheath and a rear-end outer sheath, wherein a rear sealing plug is arranged in the rear-end outer sheath, and a puncture needle head is arranged in the front-end outer sheath; the rear end of the front end outer sheath is connected with the rear outer sheath, a front end sealing piece is arranged inside the front end of the front end outer sheath, the side edge of the front end sealing piece is fixedly connected with the inner surface of the front end outer sheath, and the front end outer sheath is communicated with the rear outer sheath; the rear sealing plug is a hollow tube, the front end of the rear sealing plug is sealed and arranged in the rear outer sheath, the rear end of the rear sealing plug is opened and arranged outside the rear outer sheath, an internal puncturing part is arranged on the front end face of the rear sealing plug and is communicated with the inside of the rear sealing plug, a rear sealing piece which can be torn off is arranged on the rear end face of the rear sealing plug, and the rear sealing piece is attached to the rear end face of the rear sealing plug and seals the opening of the rear end face of the rear sealing plug; the rear end of the puncture needle head is connected with an internal communicating component which is communicated with the puncture needle head; after the rear plugging plug moves in the rear outer sheath, the inner puncturing part penetrates through the rear end of the inner communicating component and is communicated with the inner communicating component; the inner puncture component comprises an inner puncture sleeve which is arranged on the front end surface of the rear plugging plug and communicated with the inside of the rear plugging plug, and the top end of the inner puncture sleeve is a tip end; the internal communicating component comprises an internal sliding cavity which is arranged in the front-end outer sheath and is in sliding connection with the inner wall of the front-end outer sheath; the front end of the inner sliding cavity is communicated with the puncture needle head, a cavity opening is formed in the rear end face of the inner sliding cavity, and an inner sealing sheet is arranged on the cavity opening.
Among the technical scheme of this application, front end oversheath, rear portion are sealed and are blockked up and front end gasket, rear end gasket enclose into an inclosed space, wrap up the puncture syringe needle in airtight space, tearing off insulin injection syringe needle packing back, the puncture syringe needle can not expose in the air, has prevented that the puncture syringe needle from receiving comparatively serious pollution. In use, the rear occlusion plug is first attached to the end of the syringe. Before cup jointing, if need tear the rear end gasket, then inside puncture part has a period of time to expose in the air, in order to avoid this condition, the rear end gasket of this application can adopt the aluminium foil paper material, when cup jointing rear portion shutoff stopper in the tip of syringe, need not tear the rear end gasket, only need when cup jointing the tip through the syringe with the rear end gasket burst can, can reduce the time that the rear end gasket exposes in the air. After the rear plugging plug is sleeved at the end part of the injector, the rear outer sheath moves towards the direction of the injector, so that the inner puncturing part penetrates through the rear end of the inner communicating component and is communicated with the inner communicating component, the inner puncturing part drives the inner communicating component and the puncturing needle head to move towards the front end of the front outer sheath, and the puncturing needle head punctures the front end sealing sheet, so that the puncturing needle head is exposed to facilitate puncturing. To reduce the exposure time of the puncture needle, the rear outer sheath may be moved in the direction of the injector after the front outer sheath is aligned with and in contact with the patient's epidermis.
The insulin is conveniently drained by using the tubular internal puncture cannula, and the top end of the internal puncture cannula can conveniently penetrate through the rear end face of the internal communication component.
After the rear sealing plug and the rear outer sheath move relatively, the inner puncture sleeve firstly punctures the inner sealing sheet and the end part of the inner puncture sleeve extends into the inner sliding cavity, and the inner sealing sheet and the outer surface of the inner puncture sleeve are tightly pressed, so that the inner puncture sleeve and the inner sliding cavity are sealed.
Preferably, according to the needle for insulin injection, the outer surface side wall of the rear seal plug is provided with an external thread, the inner surface of the rear outer sheath is provided with an internal thread, and the rear seal plug is in threaded fit with the rear outer sheath.
The rear sealing plug is in threaded fit with the rear outer sheath, so that the rear sealing plug and the rear outer sheath can move relatively only when the rear outer sheath is rotated, and misoperation is prevented.
Preferably, in the needle head for insulin injection, the rear plugging plug is fixedly provided with an annular fixed sleeve ring, and the fixed sleeve ring is sleeved on the rear plugging plug; the rear plugging plug is further sleeved with a removable limiting snap ring, one end of the limiting snap ring is in contact with the fixing sleeve, and the other end of the limiting snap ring is in contact with the rear end of the rear outer sheath.
When not using, spacing snap ring can play and prevent that rear portion from sealing up and taking place relative movement's effect with the rear portion oversheath. Just remove spacing snap ring when need the relative movement take place with the rear portion oversheath to the rear portion shutoff, prevent to expose inside puncturing part in the air because of the maloperation.
Preferably, the limiting snap ring is a silica gel elastic ring, and a notch is formed in the limiting snap ring.
The silica gel elastic ring with the notch is easy to remove and convenient to operate due to high elasticity.
Preferably, the needle head for insulin injection is characterized in that the inner puncture sleeve is fixedly sleeved with a push lantern ring, the push lantern ring and the inner puncture sleeve are integrally formed, and the push lantern ring is in contact with the rear end face of the inner sliding cavity after the inner puncture sleeve penetrates through the inner sealing sheet.
After the inner sealing sheet is punctured by the inner puncture cannula, the lantern ring is pushed to push the inner sliding cavity to move, so that the puncture needle head punctures the front end sealing sheet.
Preferably, the front end outer sheath is provided with a slide way on the inner wall, and the side wall of the inner sliding cavity is provided with a sliding head which is in sliding fit with the slide way.
In order to facilitate the inner sealing sheet to be punctured by the inner puncturing cannula, the friction force between the sliding head and the slideway should ensure that the inner sliding cavity and the front end outer sheath do not slide relatively before the inner sealing sheet is punctured by the inner puncturing cannula.
Preferably, in the needle for insulin injection, the auxiliary sealing piece is arranged inside the rear end of the front outer sheath, and the side wall of the auxiliary sealing piece is fixed to the inner surface of the rear end of the end outer sheath in an adhesive manner.
Influence the leakproofness that the rear portion sealed the jam after breaking in order to prevent the rear end gasket, increased supplementary gasket among the technical scheme of this application.
Preferably, according to the insulin injection needle, the rear end face of the rear outer sheath is provided with an annular rear end fitting plate, and the rear end sealing plate is adhered to the rear end fitting plate.
In order to increase the laminating firmness of rear end sealing piece, increased rear end laminating dish among the technical scheme of this application to increase the laminating area between rear end sealing piece and the rear portion oversheath.
The invention has the advantages that: in the technical scheme of this application, through setting up the multilayer protection, set up the puncture needle head in confined space, prevent to take place air pollution before the injection. Among the technical scheme of this application, front end oversheath, rear portion are sealed and are blockked up and front end gasket, rear end gasket enclose into an inclosed space, wrap up the puncture syringe needle in airtight space, tearing off insulin injection syringe needle packing back, the puncture syringe needle can not expose in the air, has prevented that the puncture syringe needle from receiving comparatively serious pollution. In use, the rear occlusion plug is first attached to the end of the syringe. Before cup jointing, if need tear the rear end gasket, then inside puncture part has a period of time to expose in the air, in order to avoid this condition, the rear end gasket of this application can adopt the aluminium foil paper material, when cup jointing rear portion shutoff stopper in the tip of syringe, need not tear the rear end gasket, only need when cup jointing the tip through the syringe with the rear end gasket burst can, can reduce the time that the rear end gasket exposes in the air. After the rear plugging plug is sleeved at the end part of the injector, the rear outer sheath moves towards the direction of the injector, so that the inner puncturing part penetrates through the rear end of the inner communicating component and is communicated with the inner communicating component, the inner puncturing part drives the inner communicating component and the puncturing needle head to move towards the front end of the front outer sheath, and the puncturing needle head punctures the front end sealing sheet, so that the puncturing needle head is exposed to facilitate puncturing. To reduce the exposure time of the puncture needle, the rear outer sheath may be moved in the direction of the injector after the front outer sheath is aligned with and in contact with the patient's epidermis.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the internal structure of the present invention.
Detailed Description
The technical features of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.
Detailed Description
The invention relates to a needle for insulin injection, which comprises a front-end outer sheath 1 and a rear-end outer sheath 2, wherein a rear sealing plug 3 is arranged in the rear-end outer sheath 2, and a puncture needle head 4 is arranged in the front-end outer sheath 1; the rear end of the front-end outer sheath 1 is connected with the rear outer sheath 2, a front-end sealing piece 5 is arranged inside the front end of the front-end outer sheath 1, the side edge of the front-end sealing piece 5 is fixedly connected with the inner surface of the front end of the front-end outer sheath 1, and the front-end outer sheath 1 is communicated with the rear outer sheath 2; the rear sealing plug 3 is a hollow tube, the front end of the rear sealing plug 3 is sealed and arranged in the rear outer sheath 2, the rear end of the rear sealing plug 3 is opened and arranged outside the rear outer sheath 2, the front end surface of the rear sealing plug 3 is provided with an internal puncturing part, the internal puncturing part is communicated with the inside of the rear sealing plug 3, the rear end surface of the rear sealing plug 3 is provided with a rear sealing piece 6 which can be torn off, and the rear sealing piece 6 is attached to the rear end surface of the rear sealing plug 3 and seals the opening of the rear end surface of the rear sealing plug 3; the rear end of the puncture needle head 4 is connected with an internal communicating component which is communicated with the puncture needle head 4; after the rear sealing plug 3 moves in the rear outer sheath 2, the inner puncturing part penetrates through the rear end of the inner communicating component and is communicated with the inner communicating component.
Among the technical scheme of this application, front end oversheath 1, rear portion oversheath 2, rear portion seal up 3 and front end gasket 5, rear end gasket 6 enclose into an inclosed space, wrap up puncture needle 4 in airtight space, tear insulin syringe needle packing back, puncture needle 4 can not expose in the air, prevented that puncture needle 4 from receiving comparatively serious pollution. In use, the rear seal plug 3 is first fitted to the end of the syringe. Before cup jointing, if need tear back end gasket 6 off, then inside puncture part has a period of time to expose in the air, in order to avoid this condition, back end gasket 6 of this application can adopt the aluminium foil paper material, when the tip of cup jointing the syringe with back portion shutoff 3, need not tear back end gasket 6 off, only need when cup jointing the tip through the syringe with the 6 burst of back end gasket can, can reduce the time that back end gasket 6 exposes in the air. After the rear sealing plug 3 is sleeved on the end part of the injector, the rear outer sheath 2 is moved towards the direction of the injector, so that the inner puncturing part penetrates through the rear end of the inner communicating component and is communicated with the inner communicating component, the inner puncturing part drives the inner communicating component and the puncturing needle head 4 to move towards the front end of the front outer sheath 1, and the puncturing needle head 4 punctures the front end sealing sheet 5, so that the puncturing needle head 4 is exposed to puncture conveniently. In order to reduce the exposure time of the puncture needle 4, the rear outer sheath 2 may be moved in the direction of the injector after the front outer sheath 1 is aligned with and brought into contact with the skin of the patient.
The side wall of the outer surface of the rear sealing plug 3 is provided with an external thread, the inner surface of the rear outer sheath 2 is provided with an internal thread, and the rear sealing plug 3 is in threaded fit with the rear outer sheath 2.
The rear sealing plug 3 is in threaded fit with the rear outer sheath 2, so that the rear sealing plug 3 and the rear outer sheath 2 can move relatively only when the rear outer sheath 2 is rotated, and misoperation is prevented.
An annular fixed lantern ring 7 is fixedly arranged on the rear seal plug 3, and the fixed lantern ring 7 is sleeved on the rear seal plug 3; the rear portion seals and has still cup jointed removable spacing snap ring 8 on the jam 3, and the one end and the fixed lantern ring 7 contact of spacing snap ring 8, the other end and the rear portion oversheath 2 rear end contact of spacing snap ring 8.
When not in use, the limiting snap ring 8 can play a role in preventing the rear seal plug 3 and the rear outer sheath 2 from moving relatively. The limiting snap ring 8 is removed when the rear sealing plug 3 and the rear outer sheath 2 need to move relatively, so that the inner puncturing part is prevented from being exposed to the air due to misoperation.
The limiting snap ring 8 is a silica gel elastic ring, and a notch 9 is arranged on the limiting snap ring 8.
The silica gel elastic ring with the notch is easy to remove and convenient to operate due to high elasticity.
The inner puncture component comprises an inner puncture cannula 10, the inner puncture cannula 10 is arranged on the front end surface of the rear sealing plug 3 and is communicated with the inside of the rear sealing plug 3, and the top end of the inner puncture cannula 10 is a tip.
The insulin is conveniently drained using a tubular inner puncture cannula 10 and the top end of the inner puncture cannula 10 is a rear end face where the tip can conveniently pass through the inner communicating component.
The internal communicating component comprises an internal sliding cavity 11, and the internal sliding cavity 11 is arranged in the front-end outer sheath 1 and is in sliding connection with the inner wall of the front-end outer sheath 1; the front end of the inner sliding cavity 11 is communicated with the puncture needle head 4, a cavity opening 12 is arranged on the rear end face of the inner sliding cavity 11, and an inner sealing sheet 13 is arranged on the cavity opening 12.
After the relative movement of the rear block 3 and the rear sheath 2, the inner puncture cannula 10 first pierces the inner sealing disc 13 and the end of the inner puncture cannula 10 extends into the inner sliding cavity 11, so that the inner puncture cannula 10 is sealed from the inner sliding cavity 11 due to the compression of the inner sealing disc 13 against the outer surface of the inner puncture cannula 10.
The inner puncture sleeve 10 is fixedly sleeved with a push lantern ring 14, the push lantern ring 14 and the inner puncture sleeve 10 are integrally formed, and after the inner puncture sleeve 10 penetrates through the inner sealing sheet 13, the push lantern ring 14 is in contact with the rear end face of the inner sliding cavity 11.
After the inner sealing piece 13 is pierced by the inner puncture cannula 10, the inner sliding cavity 11 is pushed to move by the pushing collar 14, so that the puncture needle 4 pierces the front sealing piece 5.
The inner wall of the front-end outer sheath 1 is provided with a slideway 15, the side wall of the inner sliding cavity 11 is provided with a sliding head 16, and the sliding head 16 is in sliding fit with the slideway 15.
In order to facilitate the inner sealing strip 13 to be pierced by the inner puncture cannula 10, the friction between the sliding head 16 and the sliding track 15 should ensure that the inner sliding cavity 11 and the front outer sheath 1 do not slide relative to each other before the inner puncture cannula 10 pierces the inner sealing strip 13.
The inner part of the rear end of the front end outer sheath 1 is provided with an auxiliary sealing sheet 17, and the side wall of the auxiliary sealing sheet 17 is fixedly adhered to the inner surface of the rear end of the end outer sheath 1.
In order to prevent the rear end sealing piece 6 from influencing the sealing performance of the rear sealing plug 3 after being broken, the auxiliary sealing piece 17 is added in the technical scheme of the application.
An annular rear end attaching plate 18 is arranged on the rear end face of the rear outer sheath 2, and the rear end sealing plate 6 is adhered to the rear end attaching plate 18.
In order to increase the laminating firmness of rear end sealing piece 6, increased rear end laminating dish 18 among the technical scheme of this application to increase the laminating area between rear end sealing piece 6 and the rear portion oversheath 2.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.