CN211561393U - Micro-syringe - Google Patents
Micro-syringe Download PDFInfo
- Publication number
- CN211561393U CN211561393U CN201922373855.XU CN201922373855U CN211561393U CN 211561393 U CN211561393 U CN 211561393U CN 201922373855 U CN201922373855 U CN 201922373855U CN 211561393 U CN211561393 U CN 211561393U
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- wall
- head
- piston rod
- cylinder
- hollow piston
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Abstract
The utility model relates to a micro-injector, including the cylinder, the piston rod and the hollow piston head that slides back and forth along the cylinder inner wall under the drive of piston rod, be equipped with the external screw thread on the outer wall of the end that the piston rod is connected with the hollow piston head, be equipped with the internal thread with external screw thread looks adaptation on the inner wall of hollow piston head, the cover is equipped with the sealing washer of being connected with the inner wall conflict of cylinder on the outer wall of hollow piston head, the internal diameter of the drain pipe that cylinder one end is connected is greater than or equal to the external diameter of piston rod, the inlet of drain pipe sets up with the piston rod of the internal activity of hollow piston head is fixed correspondingly, the; the utility model provides a guarantee when conveniently transporting that there is not microinjector of filling liquid of remaining in the syringe.
Description
Technical Field
The utility model relates to a biological medicine field especially relates to a micro-injector.
Background
The micro-syringe is used as a disposable syringe, is extremely convenient to use, does not need to draw medicines or install a needle head, can be directly used for injection, and is disposable; in order to make full use of some high-grade medicines among the prior art, there is not residue, and the syringe need pack and transport after the filling, and the syringe among the prior art is integrative packing, because the core bar is located the overcoat outside, comparatively inconvenient during the packing, and easily bump on the way transports, the weeping scheduling problem appears, brings economic loss, and the great syringe of volume also can increase the packing degree of difficulty, causes the wasting of resources simultaneously.
In view of the above-mentioned defects, the present designer is actively making research and innovation to create a micro-injector which is convenient to disassemble and transport and ensures no residue during injection, so that the micro-injector has industrial utilization value.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a guarantee when conveniently transporting that there is not the microinjector of filling liquid remaining in the inspirator.
The utility model discloses a micro-injector, include cylinder, piston rod and follow under the drive of piston rod the gliding hollow piston head is made a round trip to the cylinder inner wall, be equipped with the external screw thread on the outer wall of the end that piston rod and hollow piston head are connected, be equipped with on the inner wall of hollow piston head with the internal thread of external screw thread looks adaptation, the cover is equipped with on the outer wall of hollow piston head with the sealing washer that the inner wall of cylinder is contradicted and is connected, the internal diameter of the drain pipe that cylinder one end is connected is greater than or equal to the external diameter of piston rod, the inlet of drain pipe with hollow piston head internalization is fixed the corresponding setting of piston rod, the liquid outlet department of drain pipe still is equipped with and is.
Further, the end cap comprises a threaded head and a sealing head which are detachably connected, and a sealing film is arranged at the joint between the sealing head and the threaded head.
Furthermore, the outer wall of the liquid outlet pipe is provided with an external thread, and the inner wall of the thread head is provided with an internal thread matched with the external thread.
Furthermore, the sealing ring comprises a plurality of annular sealing strips which are arranged in parallel and protrude out of the outer wall of the sealing ring.
Furthermore, drain pipe and cylinder integrated into one piece set up.
Further, the inner diameter of the liquid outlet pipe is smaller than that of the needle cylinder.
Borrow by above-mentioned scheme, the utility model discloses at least, have following advantage: the microinjector has the characteristics of saving transportation space and stable transportation in the transportation process after glue injection, can ensure no residue in the injection using process, and reduces the injection residue rate of the injector.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
Fig. 1 is a cross-sectional view of a micro-syringe of the present invention.
1 syringe and 2 piston rod
3 hollow piston head 4 sealing ring
5 liquid outlet pipe 6 screw head
7 sealing head 8 sealing film
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Fig. 1 shows a micro-injector, including cylinder 1, piston rod 2 and make a round trip gliding hollow piston head 3 along 1 inner wall of cylinder under the drive of piston rod 2, be equipped with the external screw thread on the outer wall of the end that piston rod 2 and hollow piston head 3 are connected, be equipped with the internal thread with external screw thread looks adaptation on the inner wall of hollow piston head 3, the cover is equipped with the sealing washer 4 of contradicting the connection with the inner wall of cylinder 1 on the outer wall of hollow piston head 3, the internal diameter of drain pipe 5 that 1 one end of cylinder is connected is greater than or equal to the external diameter of piston rod 2, the inlet of drain pipe 5 and the corresponding setting of piston rod 2 of hollow piston head 3 internal activity fixed, the liquid outlet department of drain pipe 5 still is.
The principle of the micro-injector provided by the utility model is as follows:
promote piston rod 2 in the cylinder 1, because the end of piston rod 2 and the through-hole threaded connection in the hollow piston head 3, and the cover is equipped with the sealing washer 4 of contradicting the connection with the inner wall of cylinder 1 on the outer wall of hollow piston head 3, piston rod 2 can drive hollow piston head 3 telescopic motion in cylinder 1, liquid in the cavity between hollow piston head 3 and drain pipe 5 gets into drain pipe 5 through the inlet, go out liquid through drain pipe 5, drive hollow piston head 3 and reach liquid outlet department when the end of piston rod 2, at this moment, rotatory piston rod 2, piston rod 2 gos forward in the through-hole at hollow piston head 3 center, continue to get into in the inlet pipe, promote the residual liquid in the inlet pipe and push out liquid through the liquid outlet, realize the injection of no residual formula.
In this embodiment, in order to prevent that the microinjector from leaking the filling liquid in the injector through the liquid outlet pipe 5 at one end of the needle cylinder 1 during transportation, the microinjector further comprises a plug for sealing the liquid outlet pipe 5, wherein the plug comprises a threaded head 6 and a sealing head 7 which are detachably connected, and a sealing film 8 is arranged at the joint between the sealing head 7 and the threaded head 6.
In this embodiment, in order to facilitate the disassembly between the drain pipe 5 and the plug, the outer wall of the drain pipe 5 is provided with an external thread, and the inner wall of the screw head 6 is provided with an internal thread matched with the external thread.
In this embodiment, in order to better push the filling liquid in the syringe 1 and discharge the liquid through the liquid outlet of the liquid outlet pipe 5 at one end of the syringe 1, the sealing ring 4 comprises a plurality of annular sealing strips which are arranged in parallel and protrude out of the outer wall of the sealing ring 4.
In this embodiment, the liquid outlet pipe 5 and the syringe 1 are integrally formed to prevent the liquid outlet pipe 5 and the stopper connected thereto from dropping.
In this embodiment, in order to enable the piston rod 2 to be inserted into the liquid outlet pipe 5, a trace amount of residual liquid in the liquid outlet pipe 5 is extruded out of the liquid outlet pipe 5 through the liquid outlet, and the inner diameter of the liquid outlet pipe 5 is smaller than that of the needle cylinder 1.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A micro-syringe characterized by: including cylinder, piston rod and follow under the drive of piston rod the gliding hollow piston head makes a round trip of cylinder inner wall, be equipped with the external screw thread on the outer wall of the end that piston rod and hollow piston head are connected, be equipped with on the inner wall of hollow piston head with the internal thread of external screw thread looks adaptation, the cover is equipped with on the outer wall of hollow piston head with the sealing washer of connection is contradicted to the inner wall of cylinder, the internal diameter of the drain pipe that cylinder one end is connected is greater than or equal to the external diameter of piston rod, the inlet of drain pipe with hollow piston head internalization is fixed the corresponding setting of piston rod, the liquid outlet department of drain pipe still is equipped with and is used for sealing the end.
2. The microsyringe of claim 1, wherein: the end cap comprises a threaded head and a sealing head which are detachably connected, and a sealing film is arranged at the joint between the sealing head and the threaded head.
3. The microsyringe of claim 2, wherein: the outer wall of the liquid outlet pipe is provided with an external thread, and the inner wall of the thread head is provided with an internal thread matched with the external thread.
4. The microsyringe of claim 1, wherein: the sealing ring comprises a plurality of annular sealing strips which are arranged to protrude out of the outer wall of the sealing ring and are parallel to each other.
5. The microsyringe of claim 1, wherein: the liquid outlet pipe and the needle cylinder are integrally formed.
6. The microsyringe of claim 1, wherein: the inner diameter of the liquid outlet pipe is smaller than that of the needle cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922373855.XU CN211561393U (en) | 2019-12-25 | 2019-12-25 | Micro-syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922373855.XU CN211561393U (en) | 2019-12-25 | 2019-12-25 | Micro-syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211561393U true CN211561393U (en) | 2020-09-25 |
Family
ID=72550374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922373855.XU Active CN211561393U (en) | 2019-12-25 | 2019-12-25 | Micro-syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211561393U (en) |
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2019
- 2019-12-25 CN CN201922373855.XU patent/CN211561393U/en active Active
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