CN214063223U - Needle mounting piece and syringe using same - Google Patents

Abstract

The utility model relates to a syringe needle installed part and use syringe of this installed part relates to the field of syringe production manufacturing, and it includes the sleeve pipe, the intraductal installation department that is used for locating the lug locking in the sleeve pipe with the pintle that is provided with of cover, the installation department includes first spiral line strip and second spiral line strip, first spiral line strip reaches second spiral line strip all with the sleeve pipe is coaxial, first spiral line strip with second spiral line strip is rotatory to opposite and pitch equals, first spiral line strip with the adjacent two sections thickness that are not less than pintle department lug in the ascending interval of vertical side of second spiral line strip. This application is through installation department lug locking in the sleeve pipe with pintle department to the plug connection who adopts in making the relative traditional chinese art of being connected between syringe needle and the syringe is inseparabler, avoids the accident of syringe needle to drop as far as possible.

Description

Needle mounting piece and syringe using same

Technical Field

The application relates to the field of syringe production and manufacturing, in particular to a needle mounting piece and a syringe using the same.

Background

The process of drawing, injecting gas or liquid with a needle is called injection. The injector is composed of a syringe with a front section provided with a small hole and a matched piston core rod, and is used for injecting a small amount of liquid or gas into an area which cannot be accessed by other methods or extracting the liquid or gas from the area, the liquid or gas is sucked from the small hole at the front end of the syringe when the core rod is pulled out, and the liquid or gas is extruded when the core rod is pushed in.

With the development of modern technology, syringes have become a commonly used auxiliary tool in the medical field and have found some applications in some other fields. The needles currently used for syringes generally comprise a needle tip, a needle stem and a needle stopper, which usually has a protruding piece arranged on the peripheral wall of the needle stopper.

In view of the above-mentioned related art, the inventor believes that there is a drawback that the conventional needle is not tightly fitted to the cylinder and is easily loosened by being pulled by external force.

SUMMERY OF THE UTILITY MODEL

In order to improve the tightness of the connection of the needle and the needle cylinder, the application provides a needle mounting piece and an injector using the same.

In a first aspect, the present application provides a needle mount that employs the following technical solution:

a needle mount includes a cannula with a mounting portion disposed therein for locking a tab at a pintle within the cannula.

Through adopting above-mentioned technical scheme, when arranging the pintle in the sleeve pipe, installation department lug locking in the sleeve pipe with pintle department to the plug connection who adopts in making the connection between syringe needle and the syringe relatively the traditional technique is inseparabler, has avoided the accident of syringe needle to drop as far as possible.

Optionally, the mounting portion includes a first screw line and a second screw line;

the first spiral line strip and the second spiral line strip are coaxial with the sleeve, the screwing directions of the first spiral line strip and the second spiral line strip are opposite, the thread pitches of the first spiral line strip and the second spiral line strip are equal, and the distance between two adjacent sections of the first spiral line strip and the second spiral line strip in the vertical direction is not less than the thickness of a lug at the position of a pintle.

Through adopting above-mentioned technical scheme, first spiral line strip and second spiral line strip are revolved to opposite and are made first spiral line strip and second spiral line strip and form the helicla flute between, rotate the syringe needle and make between the lug screw in first spiral line strip and the second spiral line strip of pintle department, because the lug is the plastics material, thereby take place the bending at screw in-process edge and make the terminal surface of lug and the terminal surface top of first spiral line strip or second spiral line strip tight, realize the syringe needle locking in sheathed tube purpose.

Optionally, the thickness of the first spiral line increases from one end to the other end along the axial direction of the sleeve.

Through adopting above-mentioned technical scheme, because the lug is rigid plastic, stretch into the syringe needle from the less department of first spiral strip thickness, be convenient for rotate the syringe needle laborsavingly when syringe needle and sleeve pipe contact, reduce the operation degree of difficulty.

Optionally, the thickness of the second spiral strip along the axial direction of the sleeve increases from one end to the other end, and the increasing direction is the same as the increasing direction of the thickness of the first spiral strip.

Through adopting above-mentioned technical scheme, further reduced the operation degree of difficulty that the rotation syringe needle makes the lug locked in the sleeve.

In a second aspect, the present application also provides a syringe using the above needle mount, wherein the following technical solutions are adopted:

a syringe using the needle mounting member of any one of the above claims, comprising an empty barrel, an injection head, a piston handle and a rubber pad;

the injection head is tubular and is arranged at one end of the hollow cylinder, the injection head and the hollow cylinder are integrally formed and communicated, the piston is in sliding connection with the hollow cylinder, the piston handle is fixedly connected with the free end of the piston, and the rubber pad is wrapped at one end, extending into the hollow cylinder, of the piston and is tightly abutted against the inner wall of the hollow cylinder.

By adopting the technical scheme, the piston handle is pushed to drive the piston rod to stretch in the hollow cylinder, the rubber pad enables the piston rod and one end, close to the piston rod, of the cavity of the hollow cylinder to be sealed, negative pressure can be formed in the cavity when the piston rod is pulled so as to be convenient for extracting liquid or gas, and the liquid or gas in the cavity can be fully pushed out when the piston rod is pushed.

Optionally, the sleeve is fixedly connected to one end of the hollow cylinder, where the injection head is arranged, and the sleeve is coaxially arranged on the outer peripheral side of the injection head.

Through adopting above-mentioned technical scheme, when being connected syringe needle and injection head plug, the syringe needle is locked in the cover pipe by the installation department for the connection of syringe needle and syringe is inseparabler.

Optionally, the length of the cannula is less than the length of the injector head.

Through adopting above-mentioned technical scheme, when connecting the syringe needle on the syringe, the syringe needle earlier with the injection head contact, the injection head plays the effect to the syringe needle location, is convenient for follow-up with between first spiral line strip of lug screw in and the second spiral line strip.

Optionally, the inner diameter of the injection head gradually increases from the end far away from the empty barrel to the end close to the empty barrel.

Through adopting above-mentioned technical scheme, the tip that empty section of thick bamboo was kept away from to the injection head is less be convenient for locate the injection head with the syringe needle cover on, and the gradual crescent internal diameter of injection head makes when the syringe needle is located on the injection head completely to the cover, is the state of encirclement between injection head and the syringe needle, has realized the zonulae occludens between syringe needle and the injection head.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the pintle is placed in the sleeve, the mounting part locks the lug at the pintle position on the sleeve, so that the connection between the needle head and the injector is tighter than the plug connection adopted in the traditional technology, and the accidental falling of the needle head is avoided as much as possible;

2. because the lug is made of hard plastic, the needle head extends into the position with smaller thickness of the first spiral strip, so that the needle head can be conveniently rotated in a labor-saving manner when the needle head is contacted with the sleeve, and the operation difficulty is reduced;

3. the end part of the injection head far away from the hollow cylinder is smaller, so that the needle head is conveniently sleeved on the injection head, and the gradually increased inner diameter of the injection head ensures that when the needle head is completely sleeved on the injection head, the injection head and the needle head are in an overranging state, so that the tight connection between the needle head and the injection head is realized.

Drawings

FIG. 1 is a schematic view of the overall structure of an additional needle according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the overall structure of an embodiment of the present application;

fig. 3 is an overall schematic view taken along the line a-a in fig. 1.

Reference numerals: 1. a sleeve; 2. a first screw thread strip; 3. a second spiral strip; 4. an empty cartridge; 5. an injection head; 6. a piston; 7. a piston handle; 8. and (7) a rubber pad.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a needle mounting piece. Referring to fig. 1 and 2, the syringe needle installed part includes sleeve pipe 1, sleeve pipe 1 is held between the fingers and is provided with and is used for the installation department of pintle department lug locking in sleeve pipe 1, the installation department includes first spiral shell line 2 and second spiral shell line 3, first spiral shell line 2, second spiral shell line 3 and sleeve pipe 1 are integrated into one piece, first spiral shell line 2 all is coaxial with sleeve pipe 1 with second spiral shell line 3, first spiral shell line 2 is the levogyration, second spiral shell line 3 is the dextrorotation, first spiral shell line 2 equals with second spiral shell line 3 pitch, first spiral shell line 2 equals the thickness of pintle department lug with second spiral shell line 3 adjacent two sections in vertical direction interval. The thicknesses of the first screw thread strip 2 and the second screw thread strip 3 along the axial direction of the sleeve 1 are gradually increased from one end to the other end. Because the lug is rigid plastic, the needle head extends into the position with smaller thickness from the first spiral line strip 2 and the second spiral line strip 3, the needle head can be conveniently rotated in a labor-saving manner when the needle head is contacted with the sleeve 1, and the operation difficulty is reduced.

The implementation principle of this application embodiment a syringe needle installed part does: first spiral shell line 2 and second spiral shell line 3 are revolved to opposite and are made first spiral shell line 2 and second spiral shell line 3 within a definite time form the helicla flute, rotate the syringe needle and make between the first spiral shell line 2 of lug screw in and the second spiral shell line 3 of pintle department, because the lug is the plastics material, thereby take place the bending at screw in-process edge and make the terminal surface of lug and the terminal surface top of first spiral shell line 2 or second spiral shell line 3 tight, realize the purpose with the syringe needle locking in sleeve pipe 1.

The embodiment of the application also discloses a syringe using the needle mounting piece. Referring to fig. 1 and 3, the syringe using the needle mount described above includes an empty cylinder 4, an injection head 5, a piston 6, a piston handle 7, and a rubber pad 8; the injection head 5 is tubular and is integrally formed with the hollow cylinder 4, the injection head 5 is coaxially communicated with the hollow cylinder 4, the piston 6 is in sliding connection with the hollow cylinder 4, the piston handle 7 is integrally formed with the free end of the piston 6, and the rubber pad 8 wraps one end of the piston 6 extending into the hollow cylinder 4 and is abutted against the inner wall of the hollow cylinder 4. The sleeve 1 and the hollow cylinder 4 are integrally formed, the sleeve 1 and the injection head 5 are coaxial and are positioned on the outer peripheral side of the injection head 5, the length of the injection head 5 is greater than that of the sleeve 1, and the injection head 5 is in a circular truncated cone shape and the smaller end of the injection head is far away from the hollow cylinder 4.

The implementation principle of the syringe using the needle mounting piece is as follows: connect the syringe needle on the syringe, the syringe needle contacts with injection head 5 earlier, injection head 5 plays the effect to the syringe needle location, be convenient for follow-up lug screw in between first spiral line 2 and the second spiral line 3, round platform form injection head 5 makes the syringe needle be the state of overriding when being connected with injection head 5 complete plug-in connection, realize the zonulae occludens of syringe needle and syringe, promote piston handle 7 and drive 6 poles of piston stretch out and draw back in empty section of thick bamboo 4, rubber pad 8 makes the cavity of 6 poles of piston and empty section of thick bamboo 4 be close to the one end of 6 poles of piston sealed, can form the negative pressure in this cavity when twitching piston 6 poles and be convenient for extract liquid or gas, can fully release liquid or gas in this cavity when promoting piston 6 poles.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (7)

1. Syringe needle installed part, its characterized in that: including sleeve pipe (1), set up in sleeve pipe (1) and be used for having the installation department with pintle department lug locking in sleeve pipe (1), the installation department includes first spiral shell line (2) and second spiral shell line (3), first spiral shell line (2) reaches second spiral shell line (3) all with sleeve pipe (1) is coaxial, first spiral shell line (2) with second spiral shell line (3) are revolved to opposite and pitch and are equal, first spiral shell line (2) with second spiral shell line (3) are adjacent two sections not less than the thickness of pintle department lug in the ascending interval of vertical direction.

2. The needle mount of claim 1, wherein: the thickness of the first screw line strip (2) along the axial direction of the sleeve (1) increases from one end to the other end.

3. The needle mount of claim 2, wherein: the thickness of the second screw thread strip (3) along the axial direction of the sleeve (1) increases progressively from one end to the other end, and the increasing direction is the same as the increasing direction of the thickness of the first screw thread strip (2).

4. A syringe employing the needle mount of any one of claims 1-3, wherein: comprises a hollow cylinder (4), an injection head (5), a piston (6), a piston handle (7) and a rubber pad (8);

the injection head (5) is tubular and is arranged at one end of the hollow cylinder (4), the injection head (5) and the hollow cylinder (4) are integrally formed and communicated, the piston (6) is in sliding connection with the hollow cylinder (4), the piston handle (7) is fixedly connected with the free end of the piston (6), and the rubber pad (8) is wrapped at one end, extending into the hollow cylinder (4), of the piston (6) and is tightly abutted to the inner wall of the hollow cylinder (4).

5. The needle-mounted syringe of claim 4, wherein: the sleeve (1) is fixedly connected to one end, provided with the injection head (5), of the hollow cylinder (4), and the sleeve (1) is coaxially arranged on the peripheral side of the injection head (5).

6. The needle-mounted syringe of claim 5, wherein: the length of the sleeve (1) is less than that of the injection head (5).

7. The needle-mounted syringe of claim 6, wherein: the inner diameter of the injection head (5) is gradually increased from the end far away from the hollow cylinder (4) to the end close to the hollow cylinder (4).

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