CN211561394U

CN211561394U - Mixing syringe

Info

Publication number: CN211561394U
Application number: CN201922424967.3U
Authority: CN
Inventors: 邢程; 张恒; 谢慧慧
Original assignee: Endoclot Plus Co Ltd
Current assignee: Endoclot Plus Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-25
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a hybrid syringe, including the cylinder and can make a round trip gliding piston rod along the cylinder inner wall, the one end of cylinder is equipped with the play liquid syringe needle of connecting the liquid outlet, the cylinder seat of the cylinder other end wears to be equipped with the piston rod, the contact department between piston rod and the cylinder seat is equipped with sealing washer one, the one end of the piston rod that lies in outside the cylinder is equipped with the handle, the end of the other end of the piston rod that lies in the cylinder is equipped with spine portion, still include the hollow piston head that the cross section is T shape, the hollow piston head includes the hollow round platform that sets up threaded hole on the top surface and the hollow cylinder with hollow round platform integrated into one piece, the cover is equipped with the sealing washer two of contradicting the connection with the inner wall of play liquid syringe needle on the outer wall of hollow cylinder, be equipped with the external; the utility model provides a can carry out the mixed syringe of scene mixture in the syringe.

Description

Mixing syringe

Technical Field

The utility model relates to a biological medicine field especially relates to a mix syringe.

Background

In certain medical procedures, such as vascular embolization, it may be desirable to inject particles into the body. Such a procedure may be a minimally invasive procedure, instead of surgery, where the blocking particles may be mixed into a saline solution; additionally, in some cases, a contrast agent may be added (e.g., to make the mixture opaque to X-rays). The occluding particles may be of a size, such as between 0.1mm and 1mm, and may be configured to occlude a blood vessel of a particular diameter. When such particles are denser than the liquid carrying them, the particles tend to settle out of the mixture quickly, or when the particles are less dense than the liquid carrying them, they float. Sedimentation or flotation can lead to uneven particle concentration during injection.

Thus, certain mixing syringes do not incorporate certain single-use designs, including certain mixing syringes disclosed in breaking the membrane to allow mixing to occur, designed to mix together two materials separately held in two compartments. In addition, existing mixing syringes are not used to fill the premix solution prior to use.

In view of the above-mentioned drawbacks, the present designer is actively making research and innovation to create a mixing injector for mixing on site, so that the mixing injector has more industrial utility value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a can realize mixed syringe of scene mixture.

The utility model discloses a mixing injector, including the cylinder and can be along the gliding piston rod of cylinder inner wall back and forth, the one end of cylinder is equipped with the play liquid syringe needle of connecting the liquid outlet, the syringe seat of the cylinder other end wears to be equipped with the piston rod, the contact department between piston rod and the syringe seat is equipped with sealing washer one, the one end of piston rod that is located outside the cylinder is equipped with the handle, the end of the other end of piston rod that is located in the cylinder is equipped with the point thorn portion, still includes the hollow piston head that the cross section is T shape, the hollow piston head includes the hollow round platform that sets up the screw hole on the top surface and with hollow round platform integrated into one piece's hollow cylinder, the cover is equipped with on the outer wall of hollow cylinder with the sealing washer two of contradicting the connection of the inner wall of play liquid syringe needle, be equipped, the top surface of the hollow round table is covered with a layer of film for sealing the threaded hole.

Furthermore, the syringe seat and the syringe are integrally formed.

Further, the inner diameter of the piston rod is smaller than that of the liquid outlet needle.

Furthermore, the diameter of the hollow circular truncated cone is smaller than the inner diameter of the needle cylinder.

Further, the inner diameter of the hollow cylinder inner cavity is larger than the outer diameter of the piston rod.

Furthermore, the hollow cylinder of the hollow piston head can be driven by the piston rod to move in a telescopic manner along the inner wall of the liquid outlet needle head.

Borrow by above-mentioned scheme, the utility model discloses at least, have following advantage: the mixing injector can mix the liquid or powder in the hollow piston head and the syringe on site after pushing the piston rod to pierce the film on the hollow piston head, so that the solution can be filled and premixed before use.

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 mixing syringe of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1 with the piston rod inserted into the hollow piston head;

fig. 3 is a cross-sectional view of fig. 1 with mixing performed in situ.

1 syringe and 2 piston rod

3 liquid outlet needle head 4 syringe seat

5 sealing ring-6 handle

7 hollow round table of spine part 8

9 hollow cylinder 10 screw hole

11 sealing ring two 12 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.

The mixing injector shown in the figures 1 to 3 comprises a needle cylinder 1 and a piston rod 2 capable of sliding back and forth along the inner wall of the needle cylinder 1, wherein one end of the needle cylinder 1 is provided with a liquid outlet needle 3 connected with a liquid outlet, a needle cylinder seat 4 at the other end of the needle cylinder 1 is provided with the piston rod 2 in a penetrating way, a contact part between the piston rod 2 and the needle cylinder seat 4 is provided with a sealing ring I5, one end of the piston rod 2 positioned outside the needle cylinder 1 is provided with a handle 6, the end head of the other end of the piston rod 2 positioned in the needle cylinder 1 is provided with a sharp part 7, the mixing injector further comprises a hollow piston head with a T-shaped cross section, the hollow piston head comprises a hollow circular truncated cone 8 with a threaded hole 10 on the top surface and a hollow cylinder 9 integrally formed with the hollow circular truncated cone 8, the outer wall of the hollow cylinder 9 is sleeved with a, the top surface of the hollow round table 8 is covered with a film 12 for sealing the threaded hole 10.

The utility model provides a principle of mixing the syringe as follows:

the handle 6 at one end of the piston rod 2 in the needle cylinder 1 is pushed, because the external thread of the outer arm at the other end of the piston rod 2 is matched with the internal thread in the threaded hole 10 formed in the hollow disc of the hollow piston head, after the sharp part 7 at the other end of the piston rod 2 pierces the film 12 covering the surface of the threaded hole 10, the piston rod 2 is in threaded connection with the hollow piston head, because the outer wall of the hollow cylinder 9 of the hollow piston head is in contact connection with the inner wall of the liquid outlet needle 3 through the sealing ring two 11, the hollow cylinder 9 on the hollow piston head can be driven by the expansion and contraction of the piston rod 2 to stretch and contract in the liquid outlet needle 3, after the piston rod 2 screwed in the hollow piston head is screwed out, the liquid or powder in the hollow piston head can enter the inner cavity of the needle cylinder 1, after pre-mixing is, after the hollow piston head is pulled out from the liquid outlet needle head 3, the mixed mixture is injected through the liquid outlet to discharge liquid.

In the present embodiment, the syringe holder 4 and the syringe 1 are integrally formed to prevent leakage.

In this embodiment, the inner diameter of the piston rod 2 is smaller than the inner diameter of the outlet needle 3 in order to make the piston rod 2 smoothly enter the hollow cylinder 9 inside the outlet needle 3 after passing through the membrane 12 into the hollow disc.

In the embodiment, in order to enable the hollow piston head and the piston rod 2 to fully stir and mix in the process of driving to stretch, the diameter of the hollow circular truncated cone 8 is smaller than the inner diameter of the needle cylinder 1.

In this embodiment, for convenience, the piston rod 2 can extend into the inner cavity of the hollow cylinder 9, and the inner diameter of the inner cavity of the hollow cylinder 9 is larger than the outer diameter of the piston rod 2.

In this embodiment, after the piston rod 2 is screwed into the hollow piston head through the threaded hole 10, the hollow cylinder 9 of the hollow piston head can be driven by the piston rod 2 to move telescopically along the inner wall of the liquid outlet needle 3.

The sealing rings in the above embodiments are all sliding sealing rings, which facilitate the piston rod to slide back and forth in the needle cylinder.

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

1. The utility model provides a hybrid syringe, includes the cylinder and can along the gliding piston rod makes a round trip of cylinder inner wall, the one end of cylinder is equipped with the play liquid syringe needle of connecting the liquid outlet, the syringe seat of the cylinder other end is worn to be equipped with the piston rod, contact department between piston rod and the syringe seat is equipped with sealing washer one, its characterized in that: lie in outside the syringe the one end of piston rod is equipped with the handle, is located in the syringe the end of the other end of piston rod is equipped with spine portion, still includes the hollow piston head that the cross section is T shape, hollow piston head include set up threaded hole on the top surface hollow round platform and with hollow round platform integrated into one piece's hollow cylinder, the cover is equipped with on the hollow cylindrical outer wall with go out the sealing washer two that the inner wall conflict of liquid syringe needle is connected, be equipped with on the outer wall of the piston rod other end with the external screw thread of screw hole looks adaptation, the top surface of hollow round platform coats and is stamped the one deck and seals the film of screw hole.

2. The mixing syringe of claim 1, wherein: the syringe seat and the syringe are integrally formed.

3. The mixing syringe of claim 1, wherein: the inner diameter of the piston rod is smaller than that of the liquid outlet needle head.

4. The mixing syringe of claim 1, wherein: the diameter of the hollow circular truncated cone is smaller than the inner diameter of the needle cylinder.

5. The mixing syringe of claim 1, wherein: the inner diameter of the hollow cylinder inner cavity is larger than the outer diameter of the piston rod.

6. The mixing syringe of claim 1, wherein: the hollow cylinder of the hollow piston head can be driven by the piston rod to move in a telescopic mode along the inner wall of the liquid outlet needle head.