CN219941239U

CN219941239U - Double-tube injector

Info

Publication number: CN219941239U
Application number: CN202321127809.1U
Authority: CN
Inventors: 吏婷芳
Original assignee: Renmin Hospital of Wuhan University
Current assignee: Renmin Hospital of Wuhan University
Priority date: 2023-05-11
Filing date: 2023-05-11
Publication date: 2023-11-03
Anticipated expiration: 2033-05-11

Abstract

The utility model discloses a double-tube injector, which relates to the technical field of injectors and solves the problems that two medicine storage tubes cannot be separated for taking medicine, and the distance between the two medicine storage tubes is smaller, if the diameter of a medicine bottle is larger, the two medicine storage tubes cannot take medicine at the same time; according to the utility model, the limiting component and the connecting component are installed, the needle cylinder is connected with the mixing cavity in a plug manner through the rubber ring, the needle cylinder is clamped into the connecting seat in the limiting component, and the connecting component is used for connecting the locating plate and the piston rod in the limiting component, so that medicaments in the two needle cylinders are extruded into the mixing cavity for mixing, the needle cylinder is convenient to disassemble and assemble with the limiting component through the connecting component, the two needle cylinders are separated for respectively taking the medicaments, and the operation of medical staff is facilitated.

Description

Double-tube injector

Technical Field

The utility model relates to the technical field of syringes, in particular to a double-tube syringe.

Background

When the anesthesia department prepares the gunpowder for the patient, various medicaments are respectively extracted from the medicament bottle by using a syringe, and a double-tube syringe appears in order to save the mixing time of the medicaments;

the prior Chinese patent publication 201921883306.0 discloses a double-tube injector for clinical use in anesthesia department, and through the arrangement of a first cartridge and a second cartridge, two different medicaments can be injected at one time by the arrangement of a double-tube injector without changing the injector, thereby simplifying the operation steps of medical staff;

however, in the use process of the double-tube injector, because the two push rods are fixedly connected with the fixed cross rod, when different liquid medicines are respectively sucked into the first medicine storage tube and the second medicine storage tube, two medicine storage tubes are required to take medicines simultaneously, the two medicine storage tubes cannot be separated for taking medicines, the distance between the two medicine storage tubes is smaller, and if the diameter of the medicine bottle is larger, the two medicine storage tubes cannot take medicines simultaneously.

Disclosure of Invention

The present utility model aims to provide a double syringe capable of separately taking medicine, which can solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the double-tube injector comprises a mixing cavity, wherein a needle head is arranged at the center of the lower end of the mixing cavity, two symmetrically distributed needle cylinders are movably embedded at the upper end of the mixing cavity, a rubber ring is movably sleeved on the outer side of the part of the needle cylinder embedded in the mixing cavity, the outer wall of the rubber ring is fixedly connected with the mixing cavity, and a piston rod capable of moving up and down is embedded in the needle cylinder; the limiting component is used for positioning the two needle cylinders, is fixedly arranged at the upper end of the mixing cavity and is positioned between the two needle cylinders.

Preferably, the limiting component comprises a connecting seat fixedly connected with the mixing cavity, a positioning plate is fixedly arranged at the upper end of the connecting seat, a semicircular limiting ring is fixedly arranged on the positioning plate at the upper end of the needle cylinder, two connecting rods which are symmetrically distributed are arranged in the connecting seat, and the semicircular limiting ring can prevent the needle cylinder from moving upwards.

Preferably, the connecting rod can be in the inside up-and-down motion of connecting seat, two the equal fixed mounting in outside of connecting rod has the stopper, just the stopper pass through spacing straight flute with connecting seat swing joint, two the upper end fixedly connected with roof of connecting rod, spacing straight flute can prevent that the stopper from breaking away from the connecting seat.

Preferably, the connecting assembly is installed to the piston rod with the upper end of roof, connecting assembly includes two fixed mounting in two spacing cassettes on piston rod top, and two spacing cassette openings are opposite, the knob is installed to the upper end of roof, and the piece section shape of spacing cassette is the L font that the level was placed.

Preferably, the locating pin is fixedly installed at the center of the lower end of the knob, the knob is rotationally connected with the top plate through the locating pin, two extending plates which are symmetrically distributed are fixedly connected to the outer side of the knob, and the extending plates are movably clamped with the limiting clamping seats in a connecting mode, and the lower end faces of the extending plates are movably attached to the upper end faces of the locating plates.

Preferably, the left and right sides of the connecting seat and the positioning plate are provided with C-shaped caulking grooves.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the limiting component and the connecting component are installed, the needle cylinder is connected with the mixing cavity in a plug manner through the rubber ring, the needle cylinder is clamped into the connecting seat in the limiting component, and the connecting component is used for connecting the locating plate and the piston rod in the limiting component, so that medicaments in the two needle cylinders are extruded into the mixing cavity for mixing, the needle cylinder is convenient to disassemble and assemble with the limiting component through the connecting component, the two needle cylinders are separated for respectively taking the medicaments, and the operation of medical staff is facilitated.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic side cross-sectional view of the present utility model;

FIG. 3 is a schematic view illustrating the separation of the syringe and the stopper assembly according to the present utility model;

FIG. 4 is a schematic view of a connection assembly according to the present utility model.

In the figure: 1. a mixing chamber; 2. a needle; 3. a needle cylinder; 4. a rubber ring; 5. a limit component; 501. a connecting seat; 502. a positioning plate; 503. a semicircular limiting ring; 504. a connecting rod; 505. a limiting block; 506. a top plate; 6. a piston rod; 7. a connection assembly; 701. a limit clamping seat; 702. a knob; 703. a positioning pin; 704. an extension plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1 and 2, a double-tube injector in the drawings comprises a mixing cavity 1, a needle head 2 is arranged at the center of the lower end of the mixing cavity 1, two symmetrically distributed needle cylinders 3 are movably embedded at the upper end of the mixing cavity 1, a rubber ring 4 is movably sleeved at the outer side of a part of the needle cylinder 3 embedded in the mixing cavity 1, the outer wall of the rubber ring 4 is fixedly connected with the mixing cavity 1, and a piston rod 6 capable of moving up and down is embedded in the needle cylinder 3; the limiting component 5 is used for positioning the two needle cylinders 3, and the limiting component 5 is fixedly arranged at the upper end of the mixing cavity 1 and is positioned between the two needle cylinders 3.

Referring to fig. 3, the limiting assembly 5 includes a connecting seat 501 fixedly connected with the mixing chamber 1, a positioning plate 502 is fixedly mounted at the upper end of the connecting seat 501, a semicircular limiting ring 503 is fixedly mounted on the positioning plate 502 at the upper end of the syringe 3, and two symmetrically distributed connecting rods 504 are mounted inside the connecting seat 501.

Referring to fig. 3, the connecting rods 504 can move up and down in the connecting seat 501, the outer sides of the two connecting rods 504 are fixedly provided with limiting blocks 505, the limiting blocks 505 are movably connected with the connecting seat 501 through limiting straight grooves, and the upper ends of the two connecting rods 504 are fixedly connected with a top plate 506.

Referring to fig. 3 and 4, a connecting assembly 7 is mounted on the upper ends of the piston rod 6 and the top plate 506, the connecting assembly 7 includes two limiting holders 701 fixedly mounted on the top ends of the two piston rods 6, and the two limiting holders 701 are opened oppositely, and a knob 702 is mounted on the upper end of the top plate 506.

Referring to fig. 4, a positioning pin 703 is fixedly mounted at the center of the lower end of the knob 702, the knob 702 is rotationally connected with the top plate 506 through the positioning pin 703, two symmetrically distributed extension plates 704 are fixedly connected to the outer side of the knob 702, and the connection mode between the extension plates 704 and the limiting clamping seat 701 is movable clamping.

The working principle that the needle cylinder can take medicine separately is as follows: after two needle cylinders 3 are used for taking medicines respectively, needle heads of the two needle cylinders 3 are inserted into the mixing cavity 1, rubber rings 4 are sleeved outside the part, inserted into the mixing cavity 1, of the needle cylinders 3, then the needle cylinders 3 are pressed, the needle cylinders 3 are clamped into the connecting seat 501 and the positioning plate 502, after the needle cylinders 3 are completely embedded, semicircular limiting rings 503 are positioned at the upper ends of the needle cylinders, the needle cylinders 3 are prevented from moving upwards in the connecting seat 501, after the opening directions of the two limiting clamping seats 701 are regulated by the two piston rods 6, the top plate 506 is moved downwards through the connecting rod 504, the upper end face of the top plate 506 is flush with the upper end face of the piston rod 6, the knob 702 is rotated clockwise by 90 degrees under the condition that the knob 702 is rotationally connected with the top plate 506 through the positioning pin 703, the extending plate 704 is clamped into the limiting clamping seats 701, at the moment, the top plate 506 is connected with the two piston rods 6 through the connecting assembly 7, therefore medicines in the two needle cylinders 3 can be extruded into the mixing cavity 1 simultaneously, the two needle cylinders 3 are convenient to disassemble and assemble with the limiting assemblies 5 through the connecting assembly 7, the two needle cylinders 3 are separated respectively, the medicine taking medicines can be taken by the split respectively, and the medicines can be mixed into the two medicine cylinders 1 according to the required mixed medicines in the two needle cylinders 3.

Example 2

Referring to fig. 4, this embodiment further illustrates that for example 1, the left and right sides of the connecting seat 501 and the positioning plate 502 are provided with C-shaped caulking grooves.

In this embodiment: after the needle cylinder 3 is clamped into the connecting seat 501 and the positioning plate 502, the outer wall of the needle cylinder 3 is attached to the connecting seat 501 and the positioning plate 502 through the caulking groove, so that the contact area between the needle cylinder 3 and the connecting seat 501 and between the needle cylinder 3 and the positioning plate 502 can be increased, and the connecting seat 501 is convenient for better supporting the needle cylinder 3.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process-method-article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process-method-article or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes-modifications-substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a double-barrelled syringe, includes mixing chamber (1), needle (2) are installed to the lower extreme center department in mixing chamber (1), the upper end activity in mixing chamber (1) has inlayed two cylinder (3) that are symmetric distribution, its characterized in that: the part of the needle cylinder (3) embedded into the mixing cavity (1) is movably sleeved with a rubber ring (4), the outer wall of the rubber ring (4) is fixedly connected with the mixing cavity (1), and a piston rod (6) capable of moving up and down is embedded into the needle cylinder (3);

the limiting component (5) is used for positioning the two needle cylinders (3), the limiting component (5) is fixedly arranged at the upper end of the mixing cavity (1) and is positioned between the two needle cylinders (3).

2. A double syringe according to claim 1, characterized in that: spacing subassembly (5) include with mixing chamber (1) fixed connection's connecting seat (501), the upper end of connecting seat (501) has locating plate (502), the upper end of cylinder (3) is located fixed mounting has semicircle spacing ring (503) on locating plate (502), the internally mounted of connecting seat (501) has two connecting rods (504) that are symmetrical distribution.

3. A double syringe according to claim 2, characterized in that: the connecting rods (504) can move up and down in the connecting seats (501), limiting blocks (505) are fixedly arranged on the outer sides of the two connecting rods (504), the limiting blocks (505) are movably connected with the connecting seats (501) through limiting straight grooves, and top plates (506) are fixedly connected to the upper ends of the two connecting rods (504).

4. A double syringe according to claim 3, characterized in that: the connecting assembly (7) is installed at the upper end of piston rod (6) with roof (506), connecting assembly (7) are including fixed mounting in two spacing cassette (701) on piston rod (6) top, and two spacing cassette (701) opening orientation are opposite, knob (702) are installed to the upper end of roof (506).

5. A double syringe according to claim 4, wherein: the rotary knob comprises a rotary knob body, and is characterized in that a locating pin (703) is fixedly arranged at the center of the lower end of the rotary knob body (702), the rotary knob body (702) is rotationally connected with a top plate (506) through the locating pin (703), two extending plates (704) which are symmetrically distributed are fixedly connected to the outer side of the rotary knob body (702), and the extending plates (704) are movably clamped with the limiting clamping seat (701) in a connecting mode.

6. A double syringe according to claim 2, characterized in that: c-shaped caulking grooves are formed in the left side and the right side of the connecting seat (501) and the left side and the right side of the positioning plate (502).