CN215230334U - Novel prefilled syringe - Google Patents

Abstract

The utility model relates to the technical field of medical equipment, a novel prefilled syringe is provided. The method comprises the following steps: a needle cylinder, a push rod and a rubber plug; wherein the rubber plug is detachably arranged on the push rod; the push rod is provided with a hollow rod and a connector which are detachably connected, a ball head is arranged on one side of the junction of the connector, a cylinder extends from the other side of the junction of the connector, and a bulge is outwards arranged at the top end of the cylinder; the middle part of hollow pole sets up for cavity, the head of hollow pole has inside pole arch, pole arch with protruding phase-match. The beneficial effects of the utility model reside in that: simple structure, reasonable in design decomposes the push rod into detachable two parts and is convenient for transport, does not influence its basic function simultaneously again, and the connection between each part and use all rely on mechanical structure to realize safe and reliable.

Description

Novel prefilled syringe

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to novel prefilled syringe.

Background

A prefilled syringe is a commonly used medical device when dispensing medicine for medical use or when using medication. Many liquid pharmaceutical or other products are used and stored in pre-filled syringes. However, since a part of the push rod of the prefilled syringe is located outside the syringe during storage, the drug in the prefilled syringe may leak out of the syringe when the push rod is touched during storage, which is inconvenient for storage and also inconvenient for safety. In addition, if the injected medicine is very viscous, a syringe gun is often used, which requires a push rod for easy handling. Therefore, a new type of injector push rod is needed to achieve the functions of pushing, pulling and easy disassembly, so as to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel prefilled syringe to solve the technical problem that exists among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: a novel prefilled syringe, comprising: a needle cylinder, a push rod and a rubber plug; wherein the rubber plug is detachably arranged on the push rod; a ball head is arranged on one side of the push rod, which is provided with a hollow rod which is detachably connected with the connector, at the junction of the connector, a cylinder extends from the other side of the junction of the connector, and a bulge is outwards arranged at the top end of the cylinder; the middle part of hollow pole sets up for cavity, the head of hollow pole has inside pole arch, pole arch with protruding phase-match.

In an alternative embodiment, the number of the rod protrusions and the number of the protrusions are one or more, and the protrusions are distributed in a central symmetry manner.

In an optional embodiment, the cylinder is provided with positioning points with the same number as the protrusions.

In an alternative embodiment, the hollow rod has a hollow middle part with a diameter larger than that of the cylinder extended from the connector.

In an alternative embodiment, the stem protrusion of the hollow stem may snap into the gap of the protrusion of the connector, and the mechanical locking is achieved by rotating the stem protrusion and the protrusion.

In an optional embodiment, the rubber plug is in interference fit, bolt fit or bonding fit with a ball head of the connector.

In an optional embodiment, the outer surface of the rubber plug is provided with a plurality of sealing rings, and the rubber plug is made of elastic materials.

The beneficial effects of the utility model reside in that:

(1) the novel pre-filled syringe in the utility model is convenient to disassemble while meeting the basic functions of the syringe, and is beneficial to storing medicines by using the syringe; compared with the traditional prefilled syringe, the syringe divides the push rod into two parts of a connector and a connecting rod, the push rod after improvement can realize the actions of pushing, pulling and the like, and the syringe is convenient to detach during storage.

(2) The utility model provides a protruding clearance that suitable position passes through the connector can be found through the rotation to the inside pole protruding structure of hollow rod of novel prefilled syringe, and the rethread is rotatory to make its structure machinery locking to accomplish the realization of function, convenient to use, simple structure.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic view of an assembly structure of a novel syringe according to an embodiment of the present invention;

fig. 2 is a schematic view of an assembly structure of the push rod according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a rubber plug according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an adapter according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a hollow rod according to an embodiment of the present invention.

Wherein, the reference numbers in the figures are: the syringe 1, the push rod 2, the rubber plug 3, the hollow rod 21, the connecting head 22, the ball head 221, the junction 222, the positioning point 223, the protrusion 224, the rod protrusion 211, the rod handle 212, the small diameter 31 and the cavity 32.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

Referring to fig. 1-2, the present embodiment provides a novel injector device comprising: a needle cylinder 1, a push rod 2 and a rubber plug 3, wherein the push rod 2 consists of a hollow rod 21 and a connector 22.

Referring to fig. 3, the rubber plug 3 is made of an elastic material, and the small diameter 31 of the rubber plug 3 is smaller than the diameter of the cavity 32, so that the rubber plug 3 is conveniently matched with the connecting head 22.

Referring to fig. 4, the left side of the adapter 22 is provided with a convex ball 221, which facilitates interference fit with the small diameter 31 of the rubber plug 3 in fig. 2; the right-hand projection 224 is connected to the hollow rod 21, and the positioning point 223 is intended to be fixed, wherein the positioning point 223 can be understood as a point on the edge of the projection 224.

Referring to fig. 5, the hollow rod 21 is provided with a rod protrusion 211, when injecting, the hollow rod 21 is sleeved into the adapter 22, the rod protrusion 211 passes through a gap formed at a protrusion 224 of the adapter 22 and contacts with a junction 222 of the adapter 22, so as to push the rubber plug 3 to move; when sucking liquid, the hollow rod 21 is rotated, and when the rod protrusion 211 contacts the positioning point 223, the hollow rod 21 is pulled outwards, so that the rod protrusion 211 and the protrusion 224 contact with each other, thereby driving the rubber plug 3 to move to suck liquid; when the push rod 2 needs to be disassembled, the hollow rod 21 is reversely rotated, and the hollow rod 21 can be taken out when the two bulges are not contacted any more.

Example one

The embodiment provides a using method of a novel injector device when injecting medicine, liquid medicine needs to be injected in the syringe 1, and the rubber plug 3 is connected with the connector 22 and is positioned in the syringe 1.

The specific operation steps are as follows:

step 1: in the initial state, the hollow rod 21 is not connected with the connector 22 and is positioned outside the syringe 1, and the rubber plug 3 is connected with the connector 22 and is positioned inside the syringe 1;

step 2: moving the hollow shaft 21 to the inside of the cylinder 1 so that the shaft projection 211 and the projection 224 are in contact with each other;

and step 3: then rotate hollow rod 21, rotate certain angle again, when two department archs no longer intersect, hollow rod 21 can continue inwards to move, when removing with juncture 222, can continue the catch bar and move, promotes the plug 3 simultaneously and removes, accomplishes the injection.

Example two

The embodiment provides a use method for sucking liquid medicine by a novel injector device, which comprises the following specific operation steps:

step 1: in the initial position, the hollow bar 21 is in contact with the coupling head 22, and then the hollow bar 21 is rotated clockwise, and when the bar protrusion 211 is in contact with the positioning point 223, the rotation is stopped;

step 2: the hollow rod 21 is pulled outwards until the rod protrusion 211 contacts with the protrusion 224, and then the pulling is continued with a larger force, so as to drive the rubber plug 3 to move, and complete the inhalation of the liquid medicine.

EXAMPLE III

The embodiment provides a use method of a novel dismounting push rod of an injector device, which comprises the following specific operation steps:

step 1: after the liquid medicine is inhaled, the hollow rod 21 needs to be detached for storage and placement, the hollow rod 21 needs to be rotated counterclockwise for a certain angle, and when the two bulges are not in contact, the hollow rod 21 can be moved outwards, so that the detachment purpose is achieved. At this time, the rubber plug 3 and the connector 33 are located inside the syringe 1, so that no external object touches the syringe to cause liquid leakage.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. A novel prefilled syringe, comprising: a needle cylinder (1), a push rod (2) and a rubber plug (3); wherein the rubber plug (3) is detachably arranged on the push rod (2);

the push rod (2) is provided with a hollow rod (21) and a connector (22) which are detachably connected, a ball head (221) is arranged on one side of a junction (222) of the connector (22), a cylinder extends from the other side of the junction (222) of the connector (22), and a protrusion (224) is outwards arranged at the top end of the cylinder;

the middle of the hollow rod (21) is arranged in a hollow mode, the head of the hollow rod (21) is provided with an inward rod protrusion (211), and the rod protrusion (211) is matched with the protrusion (224).

2. A new pre-filled syringe as claimed in claim 1, characterised in that the number of said stem protrusions (211) and said protrusions (224) is one or more, each being arranged with central symmetry.

3. A new pre-filled syringe as claimed in claim 2, characterised in that the cylindrical body is provided with a number of anchoring points (223) equal to the number of said protuberances (224).

4. A novel prefilled syringe as claimed in claim 3 wherein the hollow shaft (21) has a central hollow diameter greater than the diameter of the cylindrical body from which the connector (22) extends.

5. A novel prefilled syringe according to claim 4, wherein said stem protrusion (211) of said hollow stem (21) is snapped into said gap of said protrusion (224) of said connector (22) and mechanical locking is achieved by rotating said stem protrusion (211) and protrusion (224).

6. A novel prefilled syringe according to claim 5, wherein said rubber stopper (3) is interference fit, bolted fit or adhesively fitted with said ball head (221) of said connector (22).

7. The novel prefilled syringe according to claim 6, wherein the outer surface of said rubber plug (3) is provided with a plurality of sealing rings, and said rubber plug (3) is made of elastic material.

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