CN208660061U - A kind of high-pressure injection syringe needle being easily installed - Google Patents

Abstract

The utility model provides a kind of high-pressure injection syringe needle being easily installed, including syringe, the syringe is fixed with pressing ring close to the position of bottom end, sliding is arranged with piston in the syringe, the one end for being fixedly connected with piston rod on one side of the piston far from injection needle, the other end of the piston rod is fixedly connected with the one side of pole cap, the another side of the pole cap and the front end of push rod connect, utility model device only needs the spring lever by the drawing hook of pole cap and push rod to be hooked in the connection that push rod and pole cap can be realized together, when push rod pushes pole cap, spring lever compressed spring simultaneously drives drawing hook to enter the inside of spring groove, the end of push rod and pole cap is in close contact, it realizes and pushes, the setting of spring can equally play small buffer function, after connecting pole cap and push rod, by the inner thread of the lower end outer wall of syringe and threaded connector Connection, puts on nut set and pushes down pressing ring, and connects the inner wall of nut set nut body and the outer wall thread of threaded connector.

Description

A kind of high-pressure injection syringe needle being easily installed

Technical field

The utility model relates to the field of medical instrument technology, specially a kind of high-pressure injection syringe needle being easily installed.

Background technique

Syringe is made of the foraminate syringe of front end band and matched piston core pin.Syringe is used to will be a small amount of Liquid be injected into the region that can not be approached or from those place extractions, liquid or gas are from syringe when core bar is extracted The aperture of front end sucks, and in core bar push-in, by liquid, perhaps gas releases syringe and syringe needle extracts or injection gas This of body or liquid process are called injection, and high-pressure injection is a kind of in the way of high pressure drive push rod promotion piston, so And there is the following in high pressure injector in the prior art:

1, the installation of syringe is more complicated, can be more troublesome when needing replacing injection needle；

2, piston and push rod are connected by simple hook, are not very stable.

Utility model content

The purpose of this utility model is to provide a kind of high-pressure injection syringe needles being easily installed, to solve above-mentioned background technique The problem of middle proposition.

To achieve the above object, the utility model provides the following technical solutions: a kind of high-pressure injection syringe needle being easily installed, Including syringe, the syringe is fixed with pressing ring close to the position of bottom end, and sliding is arranged with piston in the syringe, and the piston is remote The other end of one end for being fixedly connected with piston rod on one side from injection needle, the piston rod is fixedly connected with the one side of pole cap, should The another side of pole cap and the front end of push rod connect, and the push rod sliding is fastened in the high pressure chest of high pressure fuselage, the high pressure chest The rear port of threaded connector is fixedly connected at accent.

Preferably, what the pole cap was connect with push rod is fixedly connected with the end of drawing hook on one side, and the front end of the push rod is embedding Entering and is equipped with spring cavity, the depth of the spring cavity is greater than the length of drawing hook, and one end of two springs is fixed in the bottom of spring cavity, The other end of two springs is fixedly connected on the side at spring lever both ends, and the both ends of the spring lever are slided be fastened on spring respectively The two sides of cavity wall, and pull hook and be hooked on spring lever.

Preferably, the threaded connector is the attached threaded tubular structure of inside and outside wall, the bottom end outer wall of the syringe With screw thread, and the inner thread of the outer wall of syringe bottom end and threaded connector connects.

Preferably, the pressing ring is the flanged structure around syringe outer wall, is arranged with nut set on the syringe, the spiral shell Mother set part is made of nut body and round-meshed lid, and the nut body is the screwed cylindrical structure of inner wall, and spiral shell The inner wall of parent and the outer wall thread of threaded connector connect, and the internal diameter of the lid circular hole and the diameter of syringe are consistent, The pressing ring is fastened between lid and the front port of threaded connector.

Compared with prior art, the utility model has the beneficial effects that

1, utility model device only needs the spring lever by the drawing hook of pole cap and push rod to be hooked in can be realized together and push away The connection of bar and pole cap, convenient and efficient, when push rod pushes pole cap, spring lever compressed spring simultaneously drives drawing hook to enter spring The end of the inside of slot, push rod and pole cap is in close contact, and is realized and is pushed, and the setting of spring can equally play small buffering and make With.

2, it is connected through a screw thread the setting of part, the dual fixation to syringe may be implemented, installation is rapid, and stability increases By force.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is structure enlargement diagram at A in the utility model Fig. 1.

In figure: 1 syringe, 2 pressing rings, 3 pistons, 4 piston rods, 5 pole caps, 6 push rods, 7 high pressure chests, 8 threaded connectors, 9 drawings Hook, 10 spring cavitys, 11 springs, 12 spring levers, 13 nut sets.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The utility model provides a kind of technical solution referring to FIG. 1-2: a kind of high-pressure injection syringe needle being easily installed, packet Syringe 1 is included, syringe 1 is fixed with pressing ring 2 close to the position of bottom end, and sliding is arranged with piston 3 in syringe 1, and the piston 3 is far from note One end for being fixedly connected with piston rod 4 on one side of syringe needle is penetrated, the other end of piston rod 4 is fixedly connected with the one side of pole cap 5, the pole cap 5 Another side connect with the front end of push rod 6, push rod 6 sliding be fastened in the high pressure chest 7 of high pressure fuselage, high pressure chest 7 be cylinder, can To drive the flexible of push rod 6, realizes the injection and absorption of syringe, be fixedly connected with threaded connector 8 at the accent of the high pressure chest 7 Rear port.

What pole cap 5 was connect with push rod 6 is fixedly connected with the end of drawing hook 9 on one side, and drawing hook 9 is common in the art Enclosed type spring hook can be such that drawing hook 9 is hooked on spring lever 12 always, keep close connection, and the front end insertion of push rod 6 is equipped with Spring cavity 10, the depth of the spring cavity 10 is greater than the length of drawing hook 9, and the one of two springs 11 is fixed in the bottom of spring cavity 10 End, the other end of two springs 11 are fixedly connected on the side at 12 both ends of spring lever, and the both ends of spring lever 12 are slided card respectively and set It in the two sides of 10 inner wall of spring cavity, and pulls hook 9 and is hooked on spring lever 12, spring cavity 10 is equipped with the limiting block of spring lever 12 Block, when push rod 6 pushes pole cap 5,12 compressed spring 11 of spring lever simultaneously drives drawing hook 9 to enter the inside of spring groove 11, pushes away The end of bar 6 and pole cap 5 is in close contact, and is realized and is pushed, the setting of spring 11 can equally play small buffer function.

Threaded connector 8 is the attached threaded tubular structure of inside and outside wall, and the bottom end outer wall of syringe 1 has screw thread, and needle The outer wall of 1 bottom end of cylinder is connect with the inner thread of threaded connector 8.

Pressing ring 2 is the flanged structure around 1 outer wall of syringe, is arranged with nut set 13 on syringe 1, the nut set 13 by Nut body and round-meshed lid composition, nut body be the screwed cylindrical structure of inner wall, and the inner wall of nut body with The outer wall thread of threaded connector 8 connects, and the diameter of the internal diameter and syringe 1 of lid circular hole is consistent, and pressing ring 2 is fastened on lid Between the front port of threaded connector 8, after connecting pole cap 5 and push rod 6, the lower end outer wall of syringe 1 and screw thread are connected The inner thread of fitting 8 connects, and puts on nut set 13 and pushes down pressing ring, and connects the inner wall of 13 nut body of nut set and screw thread The outer wall thread of fitting 8 connects.

Working principle: utility model device only needs the spring lever 12 by the drawing hook 9 of pole cap 5 and push rod 6 to be hooked in one The connection that push rod 6 Yu pole cap 5 can be realized is acted, when push rod 6 pushes pole cap 5,12 compressed spring 11 of spring lever simultaneously drives drawing Hook enters the inside of spring groove 11, and the end close contact of push rod 6 and pole cap 5 is realized and pushed, the setting of spring 11 equally may be used To play small buffer function, after connecting pole cap 5 and push rod 6, by the lower end outer wall of syringe 1 and threaded connector 8 Inner thread connection, puts on nut set 13 and pushes down pressing ring, and makes the inner wall of 13 nut body of nut set and threaded connector 8 Outer wall thread connection.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (4)

1. a kind of high-pressure injection syringe needle being easily installed, including syringe (1), position fixation of the syringe (1) close to bottom end is set Have pressing ring (2), sliding is arranged with piston (3) in the syringe (1), which is fixedly connected on one side far from injection needle One end of piston rod (4), it is characterised in that: the other end of the piston rod (4) is fixedly connected with the one side of pole cap (5), the pole cap (5) another side is connect with the front end of push rod (6), and push rod (6) sliding is fastened in the high pressure chest (7) of high pressure fuselage, should The rear port of threaded connector (8) is fixedly connected at the accent of high pressure chest (7).

2. a kind of high-pressure injection syringe needle being easily installed according to claim 1, it is characterised in that: the pole cap (5) with The front end insertion of the end for being fixedly connected with drawing hook (9) on one side of push rod (6) connection, the push rod (6) is equipped with spring cavity (10), The depth of the spring cavity (10) is greater than the length of drawing hook (9), and the one of two springs (11) is fixed in the bottom of spring cavity (10) End, the other end of two springs (11) are fixedly connected on the side at spring lever (12) both ends, the both ends point of the spring lever (12) The two sides of spring cavity (10) inner wall Hua Dong be fastened on, and pulls hook (9) and is hooked on spring lever (12).

3. a kind of high-pressure injection syringe needle being easily installed according to claim 1, it is characterised in that: the threaded connector It (8) is the attached threaded tubular structure of inside and outside wall, the bottom end outer wall of the syringe (1) has a screw thread, and syringe (1) bottom end Outer wall is connect with the inner thread of threaded connector (8).

4. a kind of high-pressure injection syringe needle being easily installed according to claim 1, it is characterised in that: the pressing ring (2) is Around the flanged structure of syringe (1) outer wall, nut set (13) are arranged on the syringe (1), the nut set (13) is by spiral shell Parent and round-meshed lid composition, the nut body are the screwed cylindrical structure of inner wall, and the inner wall of nut body It is connect with the outer wall thread of threaded connector (8), the diameter of the internal diameter and syringe (1) of the lid circular hole is consistent, described Pressing ring (2) is fastened between lid and the front port of threaded connector (8).