CN208464842U - A kind of syringe - Google Patents

Abstract

The utility model discloses a kind of syringes, including syringe, piston, syringe needle and needle cover, the syringe is axially arranged with graduation mark along barrel, one end of the syringe is equipped with opening, the opening two sides are equipped with clamping part, and the other end of the syringe is equipped with conehead, is provided with the first helicitic texture on the conehead, it is equipped with restricting orifice close to conehead one end in the syringe, the outer diameter of the restricting orifice is consistent with the internal diameter of the syringe.The utility model solves the problems, such as that speed is uneven in injection process, while having achieved the effect that syringe needle is drawn out easily.

Description

A kind of syringe

Technical field

The utility model relates to a kind of common instruments of medical treatment, more particularly, to a kind of syringe.

Background technique

Syringe is a kind of common medical instruments, by the foraminate syringe of front end band and matching piston core pin Composition, syringe be used to by a small amount of liquid or its be injected into region that other methods can not approach or taken out from those places Out, perhaps gas is sucked when core bar is pushed into from syringe front end aperture by liquid or gas liquid when core bar is extracted It squeezes out, is called injection with this process that syringe and syringe needle extracted or injected gas or liquid, mainly to inject Medical fluid or drawing liquid.

Currently, syringe in the market, it includes syringe, piston, syringe needle and needle cover.This syringe production is simple, Easy to use, Chinese patent CN204050536U discloses a kind of syringe, including syringe, syringe piston, syringe needle and needle cover, The needle cover includes liquid collector, and the liquid collector is equipped with through-hole, and through-hole one end is stifled to be equipped with rubber stopper, the through-hole it is another End is equipped with aqueous vapor seperation film, aqueous vapor seperation film

Liquid collecting cavity is formed between rubber stopper.When using the syringe, in the medicine bottle of injection needed for inserting the needle into, pull Syringe piston, medical fluid can be pumped in needle tubing, then extract syringe needle from medicine bottle, at this time by syringe needle from the rubber of liquid collector Leather plug end is inserted into liquid collecting cavity, is pushed syringe piston, and the air and medical fluid in syringe needle enter liquid collecting cavity, continues to press on injection Device piston, the air in liquid collecting cavity can be discharged by aqueous vapor seperation film from outlet chamber, pull syringe after it can not push piston Piston, medical fluid is pumped into needle tubing again in liquid collecting cavity, and syringe is extracted after medical fluid is drained, in syringe and syringe needle just at this time Only medical fluid is not present gas, can directly be injected.On the basis of existing syringe, improve, introduce limit purchase plug and Steam isolation film solves the problems, such as that there are air in syringe.But still having in existing syringe has obvious shortcoming, First, speed is irregular in injection progradation, injection speed is inhomogenous, causes the uncomfortable aggravation of injection process；Second, when needing When pulling out syringe needle, due to syringe needle and needle tubing injection is wet, pressure under the action of, make syringe needle be not easy to pull up, or even can be to doctor Shield personnel cause unnecessary injury.

Utility model content

In view of this, the purpose of this utility model is that in view of the deficiencies of the prior art, injection speed can be adjusted by providing one kind The syringe of degree solves the problems, such as that speed is uneven in injection process while having achieved the effect that syringe needle is drawn out easily.

In order to achieve the above objectives, the utility model uses following technical scheme:

A kind of syringe, including syringe, piston, syringe needle and needle cover, the syringe is axially arranged with graduation mark along barrel, described One end of syringe is equipped with opening, and the opening two sides are equipped with clamping part, and the other end of the syringe is equipped with conehead, on the conehead It is provided with the first helicitic texture, close conehead one end is equipped with restricting orifice, the outer diameter of the restricting orifice and institute in the syringe The internal diameter for stating syringe is consistent；The piston includes support portion, elastic portion and protective coating, and the elastic portion is wrapped in the support Around portion, the protective coating is sprayed at elastic portion surface；The outer diameter of the piston is consistent with the internal diameter of the syringe, the work It is connected with piston rod beyond the Great Wall, the other end of the piston rod is equipped with handle, and pressing position is provided on the handle；The syringe needle One end is interconnecting piece, and the other end is liquid outlet, and being internally provided with for the interconnecting piece is corresponding with first helicitic texture Second helicitic texture, the outside of the interconnecting piece are equipped with a shifting block, are additionally provided with spring-backed quill on the syringe needle；The needle cover is cylinder Shape structure, the opening portion of the tubular structure are equipped with notch corresponding with the shifting block, the internal diameter of the opening portion with it is described The outer diameter of interconnecting piece is consistent, and the opening portion is fastened and connected with the interconnecting piece.

As a preferred embodiment of the present invention, arc groove is provided on the clamping part.

As a preferred embodiment of the present invention, the press section is provided with anti-skid bulge.

As a preferred embodiment of the present invention, the spring-backed quill is truncated cone-shaped, rectangular or cylindrical.

As a preferred embodiment of the present invention, the support portion is two parallel disks, and the disk passes through piston rod Concatenation, the disk are equipped with aperture.

As a preferred embodiment of the present invention, the shifting block is strip, rectangular or round.

The beneficial effects of the utility model are:

1. the utility model provides a kind of syringe, including syringe, piston, syringe needle and needle cover, the syringe is along barrel axis To scale is equipped with, one end of the syringe is equipped with opening, and the opening two sides are equipped with clamping part, and the other end of the syringe is equipped with Conehead, the first helicitic texture is provided on the conehead, and the first end of syringe inner cone is equipped with restricting orifice, the restricting orifice Outer diameter it is consistent with the internal diameter of the syringe；The piston includes support portion, elastic portion and protective coating, the elastic portion package Around the support portion, the protective coating is sprayed at elastic portion surface；The internal diameter of the outer diameter of the piston and the syringe Unanimously, the support portion is two parallel disks, and the disk is concatenated by piston rod, and the disk is equipped with aperture.It is described Piston rod is connected on piston, the other end of the piston rod is equipped with handle, and pressing position is provided on the handle；With throttling The flow velocity of orifice plate control injection.The piston uses two disks with opening as support portion, is on the one hand conducive to determine On the other hand the shape of piston alleviates the quality of piston, so that piston easy sliding；And protective coating can protect piston Elastic portion is not corroded, and avoids medicament contaminated.

2. syringe provided by the utility model, described syringe needle one end is interconnecting piece, and the other end is liquid outlet, the connection Portion is internally provided with the second helicitic texture corresponding with first helicitic texture, and the outside of the interconnecting piece is equipped with one group Block is additionally provided with spring-backed quill on the syringe needle；The needle cover is tubular structure, the opening portion of the tubular structure be equipped with it is described The corresponding notch of shifting block, the internal diameter of the opening portion is consistent with the outer diameter of the interconnecting piece, the opening portion and the connection Portion is fastened and connected.Setting helicitic texture keeps syringe needle easy to installation and removal, and opening is provided in needle cover, is provided with and dials on syringe needle Fastly, needle cover can be facilitated to open by setting ahead, avoiding brute-force from pulling out needle cover causes syringe needle to stab hand.

Detailed description of the invention

Fig. 1 is 1 structural schematic diagram of the utility model embodiment；

Fig. 2 is the utility model syringe needle and needle cover structural schematic diagram；

Fig. 3 is the structural schematic diagram in the utility model tapering；

Fig. 4 is the utility model wafer architecture schematic diagram；

Fig. 5 is the utility model piston structure schematic diagram；

Fig. 6 is 2 structural schematic diagram of the utility model embodiment.

In attached drawing: 1. graduation marks, 2. clamping parts, 3. arc grooves, 4. coneheads, 5. first helicitic textures, 6. second screw threads Structure, 7. restricting orifices, 8. shifting blocks, 9. notches, 10. press sections, 11. apertures, 12. spring-backed quills, 13. disk, 14. support portion, 15. elastic portion, 16. protective coatings, 17. piston rods.

Specific embodiment

The utility model is further described with reference to the accompanying drawings and examples.

Embodiment 1

As shown in Figures 1 to 5, the utility model includes syringe, piston, syringe needle and needle cover, and syringe is axially arranged with along barrel Graduation mark 1, one end of syringe are equipped with opening, and opening two sides are equipped with clamping part 2, are provided with arc groove 3 on clamping part 2；Syringe The other end be equipped with conehead 4, be provided with the first helicitic texture 5 on conehead 4,4 one end of conehead is equipped with restricting orifice 7, section in syringe The outer diameter of discharge orifice plate 7 and the internal diameter of syringe are consistent, and the effect of restricting orifice 7 is exactly that pipeline aperture becomes smaller, when liquid is by contracting Mouthful, a fluid stream can attenuate or shrink, and achieve the purpose that decompression and coutroi velocity.

Piston rod 17 is connected on piston, the other end of piston rod 17 is equipped with handle, is provided with press section 10 on handle, presses Splenium 10 is provided with anti-skid bulge；Piston includes support portion 14, elastic portion 15 and protective coating 16, and elastic portion 15 is wrapped in support Around portion 14, protective coating 16 is sprayed at 15 surface of elastic portion；Support portion 14 is two parallel disks 13, and disk 13 passes through piston Bar 17 concatenates, and disk 13 is equipped with aperture 11；The outer diameter of piston is consistent with the internal diameter of the syringe, and syringe needle one end is interconnecting piece, The other end is liquid outlet, and interconnecting piece is internally provided with second helicitic texture 6 corresponding with the first helicitic texture 5, interconnecting piece Outside be equipped with a shifting block 8, shifting block 8 be strip；Spring-backed quill 12 is additionally provided on syringe needle, spring-backed quill 12 is truncated cone-shaped；Needle Lid is tubular structure, and the opening portion of tubular structure is equipped with notch 9 corresponding with shifting block 8, the internal diameter of opening portion and interconnecting piece Outer diameter is consistent, and opening portion is fastened and connected with interconnecting piece.

When utility model works, first passes through the second helicitic texture 6 and syringe needle is connected with conehead 4 with the first helicitic texture 5, It stirs shifting block 8 to pull out needle cover, syringe needle liquid outlet is inserted into liquid, and piston resists syringe outlet end cylinder, pulls handle, piston It moves up, draws medical fluid；When releasing medical fluid, as in the arc groove 3 of clamping part 2, thumb is placed in press section for middle finger and index finger 10, it keeps thrust balanced, piston is pushed to move down, liquid adjusts injection flow velocity by restricting orifice 7.

Embodiment 2

As shown in fig. 6, the structure of the utility model is substantially the same manner as Example 1, the difference is that, spring-backed quill 12 For rectangle, shifting block 8 is circle.

Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, this field Other modifications or equivalent replacement that those of ordinary skill makes the technical solution of the utility model, it is practical without departing from this The spirit and scope of new technique scheme should all cover in the scope of the claims of the utility model.

Claims (6)

1. a kind of syringe, including syringe, piston, syringe needle and needle cover, it is characterised in that: the syringe is axially arranged with quarter along barrel Line is spent, one end of the syringe is equipped with opening, and the opening two sides are equipped with clamping part, and the other end of the syringe is equipped with conehead, The first helicitic texture is provided on the conehead, close conehead one end is equipped with restricting orifice, the restricting orifice in the syringe Outer diameter it is consistent with the internal diameter of the syringe；

The piston includes support portion, elastic portion and protective coating, and the elastic portion is wrapped in around the support portion, described anti- Coating spraying is protected in elastic portion surface；The outer diameter of the piston is consistent with the internal diameter of the syringe, is connected with work on the piston Stopper rod, the other end of the piston rod are equipped with handle, and pressing position is provided on the handle；

Described syringe needle one end is interconnecting piece, and the other end is liquid outlet, and the interconnecting piece is internally provided with and first screw thread Corresponding second helicitic texture of structure, the outside of the interconnecting piece are equipped with a shifting block, are additionally provided with spring-backed quill on the syringe needle；

The needle cover is tubular structure, and the opening portion of the tubular structure is equipped with notch corresponding with the shifting block, described to open The internal diameter of oral area is consistent with the outer diameter of the interconnecting piece, and the opening portion is fastened and connected with the interconnecting piece.

2. a kind of syringe according to claim 1, it is characterised in that: be provided with arc groove on the clamping part.

3. a kind of syringe according to claim 1, it is characterised in that: the press section is provided with anti-skid bulge.

4. a kind of syringe according to claim 1, it is characterised in that: the spring-backed quill be truncated cone-shaped, it is rectangular or circle Cylindricality.

5. a kind of syringe according to claim 1, it is characterised in that: the support portion is two parallel disks, described Disk is concatenated by piston rod, and the disk is equipped with aperture.

6. a kind of syringe according to claim 1, it is characterised in that: the shifting block is strip, rectangular or round.