CN214050040U

CN214050040U - Anti-suck-back syringe

Info

Publication number: CN214050040U
Application number: CN202021906582.7U
Authority: CN
Inventors: 曾现伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-08-27
Anticipated expiration: 2030-09-03

Abstract

The utility model discloses a prevent syringe of suck-back, including syringe pipe, piston rod, rubber buffer, push pedal, piston rod one end fixed connection rubber buffer, other end fixed connection push pedal, characterized by: the syringe tube is provided with a stop block, the edge of the piston rod is provided with stop plates distributed at equal intervals, the stop plates are L-shaped, and the opening of each stop plate faces to one end connected with the rubber plug; a through hole is formed at the joint of the piston rod and the push plate; the stop block can be clamped by the stop plate through the arrangement, so that the negative pressure of the injector can be overcome, the stop plate is in an L shape, the stop plate can be arranged in a plurality of shapes, a plurality of scales are corresponding, the required capacity can be extracted randomly, the extracted solution is quantitative, the stop plate is clamped by the stop block, the stability of the piston rod can be kept, the piston rod cannot be rotated, the measurement is influenced, and both hands and time and labor are saved.

Description

Anti-suck-back syringe

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a prevent syringe of suck-back.

Background

The operating principle of syringe suction is that the piston rod of the syringe is pulled, negative pressure is generated in the cavity at the front end of the syringe tube, so that liquid or gas is sucked into the syringe tube.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, develop a syringe that prevents suck-back, this syringe can ensure to extract quantitative solution, can liberate operator's both hands again, has effectively improved the efficiency and the quality of work.

The utility model provides a technical problem's technical scheme does: on the one hand, the embodiment of the utility model provides a prevent syringe of suck-back, including syringe pipe, piston rod, rubber buffer, push pedal, piston rod one end fixed connection rubber buffer, other end fixed connection push pedal, characterized by: the syringe tube is provided with a stop block, the edge of the piston rod is provided with stop plates distributed at equal intervals, the stop plates are L-shaped, and the opening of each stop plate faces to one end connected with the rubber plug; and a through hole is formed at the joint of the piston rod and the push plate.

Preferably, the number of the piston rod edges is at least two.

Preferably, the syringe tube is a transparent tube, and scale marks are arranged on the outer wall of the tube cavity.

As optimization, the positions of the stop plates on different edge edges of the piston rod are staggered, and the positions of all the stop plates correspond to different scale marks; all capacity requirements can be met.

Preferably, the width of the through hole and the width of the stop block are both adapted to the width of the stop block, and the stop block can shuttle between two adjacent edges when the piston rod moves.

Preferably, the front end of the injector tube is provided with an injection port, and the rear end of the injector tube is provided with a handle.

Preferably, the surface of the rubber plug is provided with a rubber strip.

The effects provided in the contents of the present invention are only the effects of the embodiments, not all the effects of the present invention, and the above technical solution has the following advantages or advantageous effects:

the stop block can be clamped by the stop plate through the arrangement, so that the negative pressure of the injector can be overcome, the stop plate is in an L shape, the stop plate can be arranged in a plurality of shapes, a plurality of scales are corresponding, the required capacity can be extracted randomly, the extracted solution is quantitative, the stop plate is clamped by the stop block, the stability of the piston rod can be kept, the piston rod cannot be rotated, the measurement is influenced, and both hands and time and labor are saved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a block diagram of a syringe barrel.

Fig. 3 is a view showing the construction of the plunger rod of the syringe.

Fig. 4 is a left side view of the syringe piston.

Fig. 5 is a right side view of the syringe barrel.

In the figure, 1, a syringe tube, 2, a handle, 3, a stop block, 4, an injection port, 5, a push plate, 6, a piston rod, 7, a stop plate, 8, a through hole, 9, a rubber plug, 10, a rubber strip and 11 are marked with scales.

Detailed Description

In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted so as to not unnecessarily limit the invention. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 to 5 are an embodiment of the present invention, as shown in the figure, a syringe capable of preventing back suction, including syringe tube 1, piston rod 6, rubber plug 9, push pedal 5, piston rod 6 one end fixed connection rubber plug 9, other end fixed connection push pedal 5, characterized in that: the syringe tube 1 is provided with a stop block 3, the edge of the piston rod 6 is provided with stop plates 7 which are distributed equidistantly, the stop plates 7 are L-shaped, and the opening of each stop plate 7 faces to one end connected with a rubber plug 9; and a through hole 8 is formed at the joint of the piston rod 6 and the push plate 5.

The number of the edges of the piston rod 6 is at least two.

The syringe tube 1 is a transparent tube, and scale marks are arranged on the outer wall of the tube cavity.

The positions of the stop plates 7 on the different edge edges of the piston rod 6 are staggered, and the positions of all the stop plates 7 correspond to different scale marks 11.

The width of the through hole 8 and the opening of the stop plate 7 are both adapted to the width of the stop block 3, and the stop block 3 can shuttle between two adjacent edges when the piston rod 6 moves.

The front end of the injector tube 1 is provided with an injection port 4, and the rear end is provided with a handle 2.

The surface of the rubber plug 9 is provided with a rubber strip 10.

The utility model discloses when using, syringe pipe 1 is held to operating personnel one hand, piston rod 6 is held to the other hand, it makes dog 3 pass through-hole 8 to rotate piston rod 6, it stops to correspond the capacity department that wants the extraction to rotate, pulling piston rod 6, when making rubber buffer 9 front end surface reach the 11 positions of a certain scale mark that want to reach, dog 3 just in time aligns with a board 7 that stops, the rotatory piston rod makes board 7 card that stops hold dog 3, at this moment, piston rod 6 can overcome the negative pressure and can not reciprocate, also can not the side-to-side rotation, still there is the negative pressure in the syringe pipe 1, can aspirate the action, at this moment, operating personnel can liberate both hands temporarily, the work can still be accomplished to the syringe.

Although the above description has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and on the basis of the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative efforts are still within the scope of the present invention.

Claims

1. The utility model provides a prevent syringe of suck-back, includes syringe pipe (1), piston rod (6), rubber buffer (9), push pedal (5), piston rod (6) one end fixed connection rubber buffer (9), other end fixed connection push pedal (5), characterized by: the syringe tube (1) is provided with a stop block (3), the edge of the piston rod (6) is provided with stop plates (7) which are distributed equidistantly, the stop plates (7) are L-shaped, and the opening of each stop plate (7) faces to one end connected with a rubber plug (9); and a through hole (8) is formed at the joint of the piston rod (6) and the push plate (5).

2. An anti-suck back syringe as defined in claim 1, further comprising: the number of the piston rod (6) edges is at least two.

3. An anti-suck back syringe as defined in claim 1, further comprising: the syringe tube (1) is a transparent tube, and scale marks (11) are arranged on the outer wall of the tube cavity.

4. An anti-suck back syringe as defined in claim 1, further comprising: the positions of the stop plates (7) on different edge edges of the piston rod (6) are staggered, and the positions of all the stop plates (7) correspond to different scale marks (11).

5. An anti-suck back syringe as defined in claim 1, further comprising: the width of the through hole (8) and the width of the stop block (3) are adapted to the opening of the stop plate (7), and the stop block (3) can shuttle between two adjacent edges when the piston rod (6) moves.

6. An anti-suck back syringe as defined in claim 1, further comprising: the front end of the injector tube (1) is provided with an injection port (4), and the rear end is provided with a handle (2).

7. An anti-suck back syringe as defined in claim 1, further comprising: the rubber stopper (9) surface is provided with rubber strip (10).