CN210020662U

CN210020662U - Simple pressurizing injector

Info

Publication number: CN210020662U
Application number: CN201920149640.7U
Authority: CN
Inventors: 杨昌宏; 龚光辉; 刘金辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-01-29
Filing date: 2019-01-29
Publication date: 2020-02-07
Anticipated expiration: 2029-01-29

Abstract

The utility model belongs to the technical field of the daily necessities technique and specifically relates to a simple and easy pressurization syringe, which comprises an outer shell, the shell includes the cylinder, the one end of cylinder closely bonds and has the syringe needle nipple, another tip of cylinder closely bonds and has the press hand, be equipped with syringe needle portion on the syringe needle nipple, it has push rod assembly to peg graft in the cylinder, syringe needle portion includes the pintle, the pintle closely cup joints on the syringe needle nipple on the cylinder, it is equipped with the needle stalk to run through on the pintle, the needle cap has been cup jointed on the pintle, push rod assembly includes the piston rod, a tip of piston rod closely bonds and has the sealing plug, the sealing plug is pegged graft in the cylinder, the diameter of diameter and the diameter of cylinder equal, the utility model discloses a push rod assembly who sets up on this syringe to medical personnel one-hand effect of using the syringe has been realized.

Description

Simple pressurizing injector

Technical Field

The utility model relates to the technical field of daily necessities, in particular to a simple pressurizing injector.

Background

In the process of neurosurgery or daily infusion operation, an injector is equipment which is frequently needed, but in a hospital at present, medical staff can only inject and infuse a patient with one hand due to busy things, and the use is not convenient enough.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple and easy pressurization syringe to solve the inconvenient technical problem of one-hand operation who provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a simple pressurizing injector comprises a shell, wherein the shell comprises a needle cylinder, one end of the needle cylinder is tightly bonded with a needle nipple, the other end of the needle cylinder is tightly bonded with a press hand, a needle head part is arranged on the needle nipple, and a push rod assembly is inserted in the needle cylinder;

the needle head part comprises a pintle, the pintle is tightly sleeved on a needle nipple on the needle cylinder, a needle stem penetrates through the pintle, and a needle cap is sleeved on the pintle;

the push rod assembly comprises a piston rod, a sealing plug is tightly bonded at one end of the piston rod, the sealing plug is inserted into the needle cylinder, the diameter of the sealing plug is equal to that of the needle cylinder and is in sliding sealing fit with the inner cylinder wall of the needle cylinder, a through hole is formed in the piston rod, a plurality of air holes are formed in the piston rod, the air holes are communicated with the through hole, a plug handle is tightly bonded at the other end of the piston rod, the piston rod penetrates through the plug handle, a lantern ring is tightly bonded on the end surface of the plug handle, which is opposite to the piston rod, sliding grooves are formed in the inner walls at two sides of the lantern ring, moving parts are formed in the groove walls at the upper end and the lower end of the sliding groove, a moving part is arranged in the middle of the lantern ring, the moving part comprises an arc-, the upper end and the lower end of the sliding block are both tightly bonded with bulges, the bulges are in sliding fit with the clamping grooves, and the side wall of the sliding block, which is back to the piston rod, is fixedly connected with a return spring.

Preferably, the length of the needle cap is greater than the length of the needle stem.

Preferably, the depth of the through hole is smaller than the length of the piston rod.

Preferably, a filter screen is tightly adhered to the orifice of the through hole.

Preferably, two ends of the return spring are respectively and tightly bonded with the sliding block and the groove wall of the sliding groove.

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

the utility model discloses a push rod assembly who sets up on this syringe to made things convenient for medical personnel to outwards pull out the effect of piston post, avoided medical personnel's the unable convenient condition of using the syringe to take place when one-hand operation.

Drawings

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

FIG. 2 is a view of the structure of the casing and the needle head of the present invention;

FIG. 3 is a structural diagram of the push rod assembly of the present invention;

fig. 4 is an enlarged view of a portion a in fig. 3 according to the present invention;

fig. 5 is a structural diagram of the movable member of the present invention.

In the figure: the needle comprises a shell 1, a needle cylinder 11, a press hand 12, a needle head part 2, a pintle 21, a needle stem 22, a needle cap 23, a push rod assembly 3, a piston rod 31, a through hole 311, a vent hole 312, a sealing plug 32, a plug handle 33, a lantern ring 34, a sliding groove 341, a clamping groove 342, a movable piece 35, an arc-shaped plate 351, a sliding block 352, a bulge 353 and a return spring 354.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 description and to simplify the description, but do not indicate or imply that the device or element 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.

Referring to fig. 1-5, the present invention provides a technical solution:

a simple pressurizing injector is shown in figure 1 and comprises a shell 1, a needle head part 2 is arranged at the end part of the shell 1, and a push rod component 3 is inserted in the shell 1.

Specifically, as shown in fig. 2, the housing 1 includes a needle cylinder 11, one end of the needle cylinder 11 is tightly adhered with a needle nipple, the other end of the needle cylinder 11 is tightly adhered with a button 12, the needle head 2 includes a needle plug 21, the needle plug 21 is tightly sleeved on the needle nipple of the needle cylinder 11, a needle stem 22 penetrates through the needle plug 21, and a needle cap 23 is sleeved on the needle plug 21.

In this embodiment, the needle cylinder 11 is marked with scale marks, so that the effect of measuring the volume of the liquid medicine in the needle cylinder 11 can be realized.

In this embodiment, the length of the needle cap 23 is greater than the length of the needle stem 22, and the needle stem 22 is located inside the needle cap 23, so that the needle stem 22 is protected.

As shown in fig. 3-5, push rod assembly 3 includes a piston rod 31, a sealing plug 32 is tightly adhered to one end of piston rod 31, sealing plug 32 is inserted into syringe 11, the diameter of sealing plug 32 is equal to the diameter of syringe 11, and is in sliding sealing fit with the inner wall of syringe 11, so as to realize the effect of pressurizing the liquid medicine in syringe 11 after pushing sealing plug 32, and finally pushing liquid medicine to extrude the syringe. A through hole 311 is formed in the piston rod 31, a plurality of air holes 312 are formed in the piston rod 31, and the air holes 312 are communicated with the through hole 311; because the air holes 312 are communicated with the through holes 311, the effect of ventilating the residual liquid medicine on the inner wall of the needle cylinder 11 can be realized, the volatilization of the residual liquid medicine is facilitated, and the condition that the residual liquid medicine affects the reading of the scale marks by medical staff is avoided. In addition, in this embodiment, the filter screen is tightly adhered to the opening of the through hole 311, so that the effect of filtering the inside of the through hole 311 when the injector is used can be realized, and the condition that external germs or dust enter the syringe 11 through the through hole 311 is avoided.

In this embodiment, the depth of the through hole 311 is smaller than the length of the piston rod 31, so that the medical fluid in the movable syringe 11 can be prevented from flowing to the outside through the piston rod 31.

The tip of piston rod 31 closely bonds and has the sealing plug 32, the other end of piston rod 31 closely bonds and has stopper handle 33, piston rod 31 runs through stopper handle 33, closely bond on the terminal surface of the piston rod 31 of the back of stopper handle 33 and have the lantern ring 34, spout 341 has all been seted up on the both sides inner wall of lantern ring 34, draw-in groove 342 has all been seted up on the upper and lower both ends cell wall of spout 341, be equipped with moving part 35 in the middle of the lantern ring 34, moving part 35 includes arc 351, the both ends of arc 351 all closely bond and have slider 352, what slider 352 can move about clamps in spout 341, and the upper and lower both ends of slider 352 all closely bond and have arch 353, arch 353 and draw-in groove 342 sliding fit, thereby realized carrying out spacing effect to slider 352 and arc 351, avoided arc 351 to take place the condition of skew in gliding. A return spring 354 is fixedly connected to the side wall of the slide block 352 facing away from the piston rod 31.

In this embodiment, two ends of the return spring 354 are respectively and tightly bonded to the sliding block 352 and the groove wall of the sliding groove 341, so that after the arc-shaped plate 351 is pushed, the sliding block 352 presses the return spring 354, the return spring 354 deforms to generate elastic force, and the effect of pushing the lantern ring 34 to move outwards is finally achieved.

When the simple pressurizing injector of the embodiment is used, firstly, the needle cap 23 is pulled off from the needle stem 22 and the tip of the needle stem 22 is inserted into the liquid medicine, the medical staff inserts the thumb into the lantern ring 34, then the arc-shaped plate 351 in the lantern ring 34 is pushed by fingers, then the sliding blocks 352 on two sides of the arc-shaped plate 351 can slide in the sliding grooves 341, the protrusions 353 are tightly adhered to the upper end and the lower end of the sliding block 352, and the protrusions 353 are movably clamped in the clamping grooves 342, so that the limiting effect of the arc-shaped plate 351 can be realized, when the arc-shaped plate 351 slides, the sliding block 352 extrudes the reset spring 354, at the moment, the reset spring 354 is compressed and deformed, under the elastic action of the reset spring 354, the lantern ring 34 is extruded, and finally the piston rod 31 in the needle cylinder 11 is driven to move outwards, so that the liquid medicine can be extracted into the needle cylinder.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a simple and easy pressurization syringe, includes shell (1), shell (1) includes cylinder (11), the one end of cylinder (11) closely bonds and has the needle nipple, another tip of cylinder (11) closely bonds and has according to hand (12), be equipped with needle head portion (2) on the needle nipple, it has push rod assembly (3), its characterized in that to peg graft in cylinder (11):

the needle head part (2) comprises a pintle (21), the pintle (21) is tightly sleeved on a needle nipple on the needle cylinder (11), a needle stem (22) penetrates through the pintle (21), and a needle cap (23) is sleeved on the pintle (21);

the push rod assembly (3) comprises a piston rod (31), a sealing plug (32) is tightly bonded to one end of the piston rod (31), the sealing plug (32) is inserted into the needle cylinder (11), the diameter of the sealing plug (32) is equal to that of the needle cylinder (11), and is in sliding sealing fit with the inner cylinder wall of the needle cylinder (11), a through hole (311) is formed in the piston rod (31), a plurality of air holes (312) are formed in the piston rod (31), the air holes (312) are communicated with the through hole (311), a plug handle (33) is tightly bonded to the other end of the piston rod (31), the piston rod (31) penetrates through the plug handle (33), a sleeve ring (34) is tightly bonded to the end face of the plug handle (33) back to the piston rod (31), and sliding grooves (341) are formed in the inner walls of two sides of the sleeve ring (34), clamping grooves (342) are formed in the groove walls of the upper end and the lower end of the sliding groove (341), a moving part (35) is arranged in the middle of the lantern ring (34), the moving part (35) comprises an arc-shaped plate (351), sliding blocks (352) are tightly bonded to the two ends of the arc-shaped plate (351), the sliding blocks (352) are movably clamped in the sliding groove (341), protrusions (353) are tightly bonded to the upper end and the lower end of the sliding block (352), the protrusions (353) are in sliding fit with the clamping grooves (342), and a reset spring (354) is fixedly connected to the side wall, back to the piston rod (31), of the sliding block (352); the length of the needle cap (23) is greater than that of the needle stem (22); the depth of the through hole (311) is smaller than the length of the piston rod (31).

2. The simple pressurizing syringe according to claim 1, wherein: and a filter screen is tightly adhered to the orifice of the through hole (311).

3. The simple pressurizing syringe according to claim 1, wherein: two ends of the return spring (354) are respectively and tightly bonded with the groove walls of the sliding block (352) and the sliding groove (341).