CN211561396U

CN211561396U - Multiphase mixing injector

Info

Publication number: CN211561396U
Application number: CN201922427895.8U
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 heterogeneous mixed 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 piston rod is equipped with the handle, the end of the other end is equipped with spine portion, the hollow piston head that the cross section is T shape includes integrated into one piece's hollow round platform and hollow cylinder, set up internal thread hole one on the top surface of hollow round platform, internal thread hole two has been seted up to the junction of hollow cylinder and hollow round platform, the cover is equipped with the sealing washer two of contradicting the connection with the inner wall of going out the liquid syringe needle on the outer wall of hollow cylinder, be equipped with the external screw thread with internal; the utility model provides a can carry out heterogeneous mixed syringe of site mixing in the syringe.

Description

Multiphase mixing injector

Technical Field

The utility model relates to a biological medicine field especially relates to a heterogeneous mixed 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 multi-phase mixing syringes do not incorporate certain single-use designs, including certain multi-phase mixing syringes disclosed in the disclosure that break a membrane to allow mixing to occur are designed to mix together two materials separately stored in two compartments. Additionally, existing multiphase mixing injectors are not used to fill the premix solution prior to use.

In view of the above-mentioned drawbacks, the present designer has made active research and innovation to create a multi-phase mixing injector for on-site mixing, so that the 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 heterogeneous mixing syringe that can realize the scene mixture.

The utility model discloses a heterogeneous mixed syringe, 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, lies in outside the cylinder one end of piston rod is equipped with the handle, lies in the cylinder the end of the other end of piston rod is equipped with the spine portion, still includes the hollow piston head that the cross section is the T shape, the hollow piston head includes hollow round platform and hollow cylinder of integrated into one piece, set up internal thread hole one on the top surface of hollow round platform, set up internal thread hole two at the junction of hollow cylinder and hollow round platform, the cover is equipped with on the outer wall of hollow cylinder with the sealing washer two of contradicting the connection of, the outer wall of the other end of the piston rod is provided with an external thread matched with the first internal thread hole and the second internal thread hole, the top surface of the hollow circular truncated cone is covered with a layer of film for sealing the first internal thread hole, and the joint of the hollow cylinder and the hollow circular truncated cone is covered with a layer of film for sealing the second internal thread 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.

Furthermore, a first internal thread hole extending towards the hollow round table inner cavity is formed in the top surface of the hollow round table, and a second internal thread hole extending towards the hollow cylinder inner cavity is formed in the joint of the hollow cylinder and the hollow round table.

Borrow by above-mentioned scheme, the utility model discloses at least, have following advantage: the multiphase mixing injector can mix the liquid or powder in the hollow piston head and the needle cylinder on site after pushing the piston rod to puncture 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 the multiphase mixing injector 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 internal thread hole one

11 sealing ring two 12 film

13 second internal thread hole

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 to 3 show a multiphase hybrid injector, which 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 first sealing ring 5, 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 spine part 7, the multiphase hybrid injector further comprises a hollow piston head with a T-shaped cross section, the hollow piston head comprises a hollow circular truncated cone 8 and a hollow cylinder 9 which are integrally formed, the top surface of the hollow circular truncated cone 8 is provided with a first internal threaded hole 10, the joint of the hollow cylinder 9 and, the outer wall of the other end of the piston rod 2 is provided with an external thread matched with the first internal thread hole 10 and the second internal thread hole 13, the top surface of the hollow circular truncated cone 8 is covered with a film 12 for sealing the first internal thread hole 10, and the joint of the hollow cylinder 9 and the hollow circular truncated cone 8 is covered with a film 12 for sealing the second internal thread hole 13.

The utility model provides a heterogeneous mixed syringe's principle as follows:

the handle 6 at one end of the piston rod 2 in the needle cylinder 1 is pushed, because the external thread at the outer wall of the other end of the piston rod 2 is matched with the internal thread in the internal thread hole I10 formed in the hollow circular truncated cone 8 of the hollow piston head, after the sharp part 7 at the other end of the piston rod 2 pierces the film 12 covered on the surface of the internal thread hole I10, the piston rod 2 is in threaded connection with the hollow circular truncated cone 8 of the hollow piston head, along with the fact that the sharp part 7 at the other end of the piston rod 2 goes deep into the hollow piston head, after penetrating through the internal thread hole I10 on the hollow circular truncated cone 8 of the hollow piston head, the sharp part penetrates through the film 12 covered on the internal thread hole II 13, because the outer wall of the hollow cylinder 9 of the hollow piston head is in abutting connection with the inner wall of the liquid outlet needle head 3 through the sealing ring II, after the piston rod 2 screwed into the hollow piston head is screwed out, according to the integrity degree of the film covered outside the first internal thread hole 10 and the second internal thread hole 13, liquid or powder in the hollow circular truncated cone 8 or the hollow cylinder 9 in the hollow piston head can pass through the first internal thread hole 10 or the second internal thread hole 13 to enter the inner cavity of the needle cylinder 1, after pre-mixing is achieved, the piston rod 2 is screwed into the hollow piston head, the hollow piston head is pulled out from the liquid outlet needle head 3, and then the mixed mixture is injected into liquid through the liquid outlet.

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

In this embodiment, in order to make the piston rod 2 smoothly enter the hollow cylinder 9 in the liquid outlet needle 3 after passing through the film 12 and entering the hollow circular truncated cone, the inner diameter of the piston rod 2 is smaller than the inner diameter of the liquid outlet needle 3.

In the embodiment, in order to enable the hollow piston head to fully stir and mix in the process of driving the piston rod 2 to extend and retract, 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 first internal 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 heterogeneous mixed syringe, includes the cylinder and can along cylinder inner wall makes a round trip gliding piston rod, 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: a handle is arranged at one end of the piston rod positioned outside the needle cylinder, a sharp part is arranged at the end head of the other end of the piston rod positioned in the needle cylinder, the needle cylinder also comprises a hollow piston head with a T-shaped cross section, the hollow piston head comprises a hollow round table and a hollow cylinder which are integrally formed, the top surface of the hollow round table is provided with a first internal thread hole, a second internal thread hole is formed at the joint of the hollow cylinder and the hollow round table, a second sealing ring which is in abutting connection with the inner wall of the liquid outlet needle head is sleeved on the outer wall of the hollow cylinder, the outer wall of the other end of the piston rod is provided with an external thread matched with the first internal thread hole and the second internal thread hole, the top surface of the hollow round table is covered with a layer of film for sealing the first internal thread hole, and the joint of the hollow cylinder and the hollow round table is covered with a layer of film for sealing the second internal thread hole.

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

3. The multiphase 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 multiphase 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 multiphase 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 multiphase 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.

7. The multiphase mixing syringe of claim 1, wherein: the top surface of the hollow circular truncated cone is provided with a first internal thread hole extending towards the hollow circular truncated cone inner cavity, and the joint of the hollow cylinder and the hollow circular truncated cone is provided with a second internal thread hole extending towards the hollow cylinder inner cavity.