CN213884590U

CN213884590U - Adjustable disposable syringe

Info

Publication number: CN213884590U
Application number: CN202021707832.4U
Authority: CN
Inventors: 郑晓波
Original assignee: Changzhou Huichun Medical Equipment Co ltd
Current assignee: Changzhou Huichun Medical Equipment Co ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2021-08-06
Anticipated expiration: 2030-08-14

Abstract

The utility model relates to the technical field of medical equipment, in particular to an adjustable disposable syringe, which comprises an injection cylinder body and a piston arranged in the injection cylinder body in a sliding way, wherein the piston is provided with a piston rod, the adjustable disposable syringe also comprises a guide rod and a plurality of positioning sleeves, the guide rod is arranged on the piston rod along the displacement direction of the guide rod, the positioning sleeves are sequentially sleeved on the guide rod, the injection cylinder body is provided with a through hole matched with the positioning sleeves, the guide rod and the positioning sleeves both pass through the through hole, one end of the guide rod, which is far away from the piston rod, is provided with a fixing mechanism used for fixing the positioning sleeves on the guide rod, the outer peripheral surface of the positioning sleeves is provided with a guide groove along the axial direction of the positioning sleeves, the injection cylinder body is arranged in the through hole and is provided with a guide block matched with the guide groove, the guide block is arranged in the guide groove, when the adjustable disposable syringe is used, the positioning sleeves are rotated, and the guide groove on the positioning sleeves and the through hole are deflected, when the deflected positioning sleeve is displaced to the through hole, the needle can be blocked, and the required injection amount is obtained, so that the operation is simple and convenient.

Description

Adjustable disposable syringe

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to an adjustable disposable syringe is related to.

Background

The endoscopic puncture technology is a minimally invasive diagnosis and treatment technology finished by an endoscopic working channel, belongs to the advanced endoscopic technology, and is developed in the whole world in the last 30 years. The technology aims to obtain diagnosis samples of cells, tissues and liquid through puncture, can also perform puncture liquid-drawing treatment, and can also achieve the purpose of injection treatment. Endoscopes used for puncture at present generally include puncture by an ultrasonic endoscope and a non-ultrasonic endoscope (i.e., a general endoscope), wherein, depending on the application and the difference in design in different organs, specifically, puncture by a bronchoscope, puncture by a tracheoultrasonic endoscope, puncture by a digestive tract ultrasonic endoscope, and the like.

The existing injector can adjust the injection dosage completely by the experience of a user when in use, so that the required dosage can not be accurately reached, the treatment period is seriously prolonged in time, the working efficiency is reduced, and unnecessary troubles are increased.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problems that the prior injector can not accurately reach the required dosage by adjusting the injection dosage completely through the experience of a user when in use, prolongs the treatment period seriously and the like, reduces the working efficiency and further increases unnecessary troubles, the prior injector with adjustable and disposable use is provided.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides an adjustable disposable syringe, includes injection barrel and slides and sets up the internal piston at the injection tube, be provided with the piston rod on the piston, still include guide bar and a plurality of position sleeve, the guide bar sets up on the piston rod along its displacement direction, and a plurality of the position sleeve overlaps in proper order and establishes on the guide bar, be provided with the through-hole that matches with the position sleeve on the injection barrel, the guide bar all passes the through-hole with the position sleeve, the one end that the piston rod was kept away from to the guide bar is provided with and is used for fixing the fixed establishment on the guide bar with the position sleeve, the guide way has been seted up along its axial on the outer peripheral face of position sleeve, the injection barrel is located to be provided with the guide block that matches with the guide way in the through-hole, the guide block sets up in the guide way.

The utility model discloses a rotate the position sleeve to make the uide bushing in guide way and the through-hole on the position sleeve deflect, will block when the position sleeve displacement of deflecting to the through-hole, also be exactly required injection volume this moment, its easy operation is convenient.

In order to fix the positioning sleeve on the guide rod, the fixing mechanism further comprises a fixing nut, and the fixing nut is in threaded connection with the guide rod. The positioning sleeve is fixed on the guide rod by arranging the fixing nut on the guide rod.

In order to facilitate the operator to know the injection amount, furthermore, scales are sequentially arranged on the positioning sleeves. Through set up the scale on the position sleeve, make things convenient for the staff to observe, the operating personnel of also being convenient for knows the injection volume.

The utility model has the advantages that: the utility model discloses adjustable disposable syringe is when using, through rotating the position sleeve, and make the uide bushing in guide way and the through-hole on the position sleeve deflect, will block when the position sleeve displacement of deflecting to the through-hole, also be required injection volume this moment, its easy operation is convenient, avoided current syringe to rely on user's experience to carry out the injection quantity adjustment completely when using, can't be accurate like this reach required quantity, seriously prolong treatment cycle etc. often, just also reduced work efficiency, thereby increase the trouble problem of unnecessary.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a front view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is a schematic view of the installation structure between the injection cylinder and the guide rod of the present invention.

In the figure: 1. the injection device comprises an injection cylinder body, 2, a piston, 3, a piston rod, 4, a guide rod, 5, a positioning sleeve, 6, a through hole, 7, a guide groove, 8, a guide block, 9, a fixing nut, 10 and scales.

Detailed Description

The utility model discloses the following embodiment of combining does further detailing:

the utility model discloses not confine the following embodiment to, general technical personnel in this field can adopt other multiple embodiment to implement according to the utility model discloses a, perhaps all adopt the utility model discloses a design structure and thinking do simple change or change, all fall into the utility model discloses a protection scope. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

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 by those of ordinary skill in the art through specific situations.

As shown in fig. 1 to 3, an adjustable disposable syringe includes a syringe barrel 1 and a piston 2 slidably disposed in the syringe barrel 1, the piston 2 is provided with a piston rod 3, and also comprises a guide rod 4 and a plurality of positioning sleeves 5, the guide rod 4 is arranged on the piston rod 3 along the displacement direction thereof, the plurality of positioning sleeves 5 are sequentially sleeved on the guide rod 4, the injection cylinder body 1 is provided with a through hole 6 matched with the positioning sleeve 5, the guide rod 4 and the positioning sleeve 5 both penetrate through the through hole 6, one end of the guide rod 4 far away from the piston rod 3 is provided with a fixing mechanism for fixing the positioning sleeve 5 on the guide rod 4, the outer peripheral surface of the positioning sleeve 5 is provided with a guide groove 7 along the axial direction, a guide block 8 matched with the guide groove 7 is arranged in the through hole 6 of the injection cylinder body 1, and the guide block 8 is arranged in the guide groove 7.

The fixing mechanism comprises a fixing nut 9, and the fixing nut 9 is in threaded connection with the guide rod 4.

And scales 10 are sequentially arranged on the positioning sleeves 5.

When the adjustable disposable syringe is used, the guide grooves 7 of all the positioning sleeves 5 correspond to the guide blocks 8 in the through holes 6, the piston rod 3 is pulled, the piston 2 is made to move in the main view cylinder, so that a medium is sucked into the medium cylinder, when the fixing nut 9 is contacted with the injection cylinder 1, the capacity limit of the injection cylinder 1 is reached, one of the positioning sleeves 5 is rotated according to needs, the guide grooves 7 on the positioning sleeves 5 are deviated from the guide holes, when injection is carried out, the piston rod 3 is pushed to drive the piston 2 to move in the injection cylinder 1, the positioning sleeves 5 pass through the through holes 6 one by one along with the movement of the piston rod 3, the guide blocks 8 move in the guide grooves 7, when the positioning sleeves 5 which are deflected are moved, the guide blocks 8 are blocked by the positioning sleeves 5, the piston rod 3 cannot be pushed to move, and the required injection dosage is reached, the injection can not be carried out, when the injection is needed again, only the positioning sleeve 5 needs to be rotated and the guide groove 7 of the positioning sleeve corresponds to the guide block 8, and the piston rod 3 is pushed to drive the piston 2 to move in the injection cylinder 1 and carry out the injection.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides an adjustable disposable syringe, includes syringe barrel (1) and slides piston (2) of setting in syringe barrel (1), be provided with piston rod (3) on piston (2), its characterized in that: still include guide bar (4) and a plurality of position sleeve (5), guide bar (4) set up on piston rod (3) along its displacement direction, and are a plurality of position sleeve (5) overlap in proper order and establish on guide bar (4), be provided with on injection barrel (1) with position sleeve (5) assorted through-hole (6), through-hole (6) are all passed with position sleeve (5) in guide bar (4), the one end that piston rod (3) were kept away from in guide bar (4) is provided with and is used for fixing fixed establishment on guide bar (4) with position sleeve (5), guide way (7) have been seted up along its axial on the outer peripheral face of position sleeve (5), injection barrel (1) are located through-hole (6) and are provided with guide block (8) with guide way (7) assorted, guide block (8) set up in guide way (7).

2. The adjustable single use syringe of claim 1, wherein: the fixing mechanism comprises a fixing nut (9), and the fixing nut (9) is in threaded connection with the guide rod (4).

3. The adjustable single use syringe of claim 1, wherein: and scales (10) are sequentially arranged on the positioning sleeves (5).