CN219110445U - Injector for octreotide microspheres - Google Patents

Abstract

The present application proposes a syringe for octreotide microspheres, comprising: the needle comprises a first needle cylinder, a first piston rod, a second needle cylinder, a second piston rod and a needle head; the needle is a deep intramuscular injection needle and is arranged on the nipple at the first end of the first needle cylinder; the first syringe is used for containing octreotide microsphere solution formed by dissolving octreotide microsphere in octreotide microsphere solvent; the piston head of the first piston rod can be slidably inserted into the first syringe from the second end of the first syringe, and is used for pushing out the liquid in the first syringe from the needle; the second needle cylinder is fixedly arranged outside the first needle cylinder; the second syringe is used for containing octreotide microsphere solvent used in the process of exhausting; the piston head of the second piston rod is slidably inserted into the second syringe from the second end of the second syringe; the first end of the first needle cylinder is communicated with the first end of the second needle cylinder through a pore canal; the second end of the second needle cylinder forms a latch; the second end of the second piston rod forms a chuck.

Description

Injector for octreotide microspheres

Technical Field

The application relates to a syringe, in particular to a syringe special for octreotide microspheres.

Background

Octreotide microsphere is a drug for treating acromegaly patients, is microsphere, needs to be dissolved by a solvent when in use, is a suspension after dissolution, and is used for deep intramuscular injection of patients. There is currently no syringe dedicated to octreotide microspheres or operated with conventional syringes. Conventional syringes include a barrel, a plunger rod, and a needle. The needles used for deep intramuscular injection are longer and thinner than conventional needles. In the process of preparing injection, the suspension of the tripeptide microsphere is very easy to block the needle, and the injection is often needed immediately after the exhaust operation is finished. If there is a slight delay for any reason, such as the need to re-sterilize the puncture site, or the need for the patient to adjust the position or communicate, the needle is blocked. The octreotide microsphere solution is easy to precipitate when standing still, and the phenomenon of precipitation and delamination of liquid medicine can occur when the octreotide microsphere solution is slightly stood when being dissolved in an octreotide microsphere medicine bottle. After the exhaust is finished, the octreotide microsphere solution pushes all the air in the needle head and the cylinder of the injector out of the outside, and the octreotide microsphere solution stays in the needle head and is easy to precipitate once standing, which is the root cause of easy blocking of the needle head when the conventional injector is used for injecting octreotide microspheres.

Disclosure of Invention

In view of the above problems, the present application aims to propose a syringe for octreotide microspheres, which can effectively avoid the phenomenon of needle blockage after air discharge.

A syringe for octreotide microspheres of the present application, comprising: the needle comprises a first needle cylinder, a first piston rod, a second needle cylinder, a second piston rod and a needle head;

the needle is a deep intramuscular injection needle and is arranged on the nipple at the first end of the first needle cylinder;

the first syringe is used for containing octreotide microsphere solution formed by dissolving octreotide microsphere in octreotide microsphere solvent;

the piston head of the first piston rod can be slidably inserted into the first syringe from the second end of the first syringe, and is used for pushing out the liquid in the first syringe from the needle;

the second needle cylinder is fixedly arranged on the outer side of the first needle cylinder and is integrally formed with the first needle cylinder; the second syringe is used for containing octreotide microsphere solvent used in the process of exhausting; the first end of the second needle cylinder is closed; the piston head of the second piston rod is slidably inserted into the second syringe from the second end of the second syringe;

the first end of the first needle cylinder is communicated with the first end of the second needle cylinder through a pore canal;

the second end of the second needle cylinder forms a latch;

the second end of the second piston rod forms a clamping head;

when the piston head of the second piston rod is inserted to the first end of the second needle cylinder, the clamping head is buckled on the clamping teeth to prevent the second piston rod from retreating.

Preferably, the volume of the second syringe is smaller than the volume of the first syringe.

Preferably, the first end of the first syringe is flush with the first end of the second syringe.

According to the injector for the octreotide microsphere, the octreotide microsphere solvent in the second syringe is used for exhausting, so that after exhausting is finished, the octreotide microsphere solvent is contained in the needle head instead of the octreotide microsphere solution, and the phenomenon that the octreotide microsphere solution blocks the needle head is avoided.

Drawings

FIG. 1 is a schematic diagram of the front view of a syringe for octreotide microspheres according to the present application;

FIG. 2 is a schematic side view of a syringe for octreotide microspheres of the present application;

FIG. 3 is a schematic view of the end of the second piston rod of the injector for octreotide microspheres of the present application coupled to a second syringe;

fig. 4 is a schematic cross-sectional structure of a syringe for octreotide microspheres of the present application.

Detailed Description

The syringe for octreotide microspheres of the present application will be described in detail with reference to the accompanying drawings.

A syringe for octreotide microspheres of the present application, comprising: a first syringe 10, a first piston rod 11, a second syringe 20, a second piston rod 21, a needle 12.

The needle 12 is a deep intramuscular injection needle and is mounted on the nipple at the first end of the first barrel 10.

The first syringe 10 is used to hold an octreotide microsphere solution formed by dissolving octreotide microspheres in an octreotide microsphere solvent.

The piston head of the first piston rod 11 is slidably inserted into the first barrel 10 from the second end of the first barrel 10 for pushing the liquid in the first barrel 10 out of the needle 12.

The second cylinder 20 is fixedly disposed at the outer side of the first cylinder 10 and integrally formed with the first cylinder 10; the second syringe 20 is used for containing octreotide microsphere solvent used in degassing; the first end of the second cylinder 20 is closed; the piston head of the second piston rod 21 is slidably inserted into the second cylinder 20 from the second end thereof.

The first end of the first syringe 10 communicates with the first end of the second syringe 20 through the orifice 31.

A second end of the second syringe 20 forms a latch 22; the second end of the second piston rod 21 forms a chuck 23; when the piston head of the second piston rod 21 is inserted into the first end of the second syringe 20, the clamping head 23 is buckled on the clamping teeth 22, and when the first piston rod is pushed forward to inject the octreotide microsphere solution, the second piston rod 21 is prevented from being retracted to cause the octreotide microsphere solution to be pushed into the second syringe 20 instead of the deep muscle of the patient.

The volume of the second syringe 20 is smaller than the volume of the first syringe 10.

The first end of the first syringe 10 is flush with the first end of the second syringe 20.

When the injection needle is used, after the needle is inserted into the octreotide microsphere solvent, the first piston rod is pulled first, so that the first end of the first piston rod moves towards the second end of the first needle cylinder, and the first piston rod is stopped when the pore canal is exposed in the first needle cylinder. Pulling the second piston rod to enable the octreotide microsphere solvent to fill the second needle cylinder; then, continuously pulling the first piston rod to enable the first needle cylinder to contain enough octreotide microsphere solvent; pushing the first piston rod, pushing the octreotide microsphere solvent in the first syringe into an octreotide microsphere medicine bottle to dissolve octreotide microspheres; then the first piston rod is back pumped, and all octreotide microsphere solution is pumped into the first syringe; continuously pumping back the first piston rod with the needle upward, so that the liquid level of the octreotide microsphere solution in the first syringe is lower than the position of the pore canal, and all the solution in the needle is ensured to be pumped into the first syringe; and then pushing the second piston rod, wherein the clamping head of the second piston rod is clamped on the clamping head on the second end of the second syringe, at this time, the octreotide microsphere solvent in the second syringe is completely injected into the first syringe through the pore canal, and the air in the first syringe and the needle head is completely discharged, and at this time, the octreotide microsphere solvent is both at the first end of the first syringe and in the needle head. As the octreotide microsphere solution is not arranged in the needle, the phenomenon of blocking the needle can not occur. The healthcare worker may perform sterilization, communication with the patient, or other operations from the container after the evacuation is completed. When the injection is performed, the needle head is penetrated into the deep part of the muscle of a patient, the first piston rod is pushed, and the octreotide microsphere solution in the first needle cylinder can be injected into the deep part of the muscle of the patient.

Claims (3)

1. A syringe for octreotide microspheres, comprising: the needle comprises a first needle cylinder, a first piston rod, a second needle cylinder, a second piston rod and a needle head;

the needle is a deep intramuscular injection needle and is arranged on the nipple at the first end of the first needle cylinder;

the first syringe is used for containing octreotide microsphere solution formed by dissolving octreotide microsphere in octreotide microsphere solvent;

the piston head of the first piston rod can be slidably inserted into the first syringe from the second end of the first syringe, and is used for pushing out the liquid in the first syringe from the needle;

the second needle cylinder is fixedly arranged on the outer side of the first needle cylinder and is integrally formed with the first needle cylinder; the second syringe is used for containing octreotide microsphere solvent used in the process of exhausting; the first end of the second needle cylinder is closed; the piston head of the second piston rod is slidably inserted into the second syringe from the second end of the second syringe;

the first end of the first needle cylinder is communicated with the first end of the second needle cylinder through a pore canal;

the second end of the second needle cylinder forms a latch;

the second end of the second piston rod forms a clamping head;

when the piston head of the second piston rod is inserted to the first end of the second needle cylinder, the clamping head is buckled on the clamping teeth to prevent the second piston rod from retreating.

2. The syringe for octreotide microspheres according to claim 1, wherein:

the volume of the second syringe is smaller than the volume of the first syringe.

3. The syringe for octreotide microspheres according to claim 1, wherein:

the first end of the first syringe is flush with the first end of the second syringe.

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