CN219662505U - Disposable in-vivo injection needle - Google Patents

Abstract

The utility model relates to a disposable internal injection needle, which comprises a barrel, wherein a probe head is arranged on the front end surface of the barrel, an injection needle is arranged at the front end of the probe head in a penetrating way, a rubber piston is arranged in the barrel in a sliding way, push rods are connected with the rear ends of the rubber piston, a plurality of push rods are arranged, push plates are connected with the rear ends of the push rods, a separation piece is detachably arranged on the rear end surface of the barrel, a mounting ring is arranged on the front side of the outer end surface of the separation piece, the mounting ring is in threaded connection with the barrel, a water-blocking skin ring is arranged on the rear side of the outer end surface of the separation piece, operation rods are respectively connected on the left side and the right side of the periphery of the rear end surface of the separation piece, and sliding grooves are respectively formed in the separation piece corresponding to the push rods; the design of the blocking piece improves the overall sealing effect of the device; the design of the protective cap protects the liquid adding position, so that secondary use is avoided; the design of the end cap realizes protection to the injection needle tube and avoids reinstallation of the end cap.

Description

Disposable in-vivo injection needle

Technical Field

The utility model relates to the technical field of injection needles, in particular to a disposable in-vivo injection needle.

Background

The injection needle plays a great role in the medical treatment process, when the existing injection needle is used, due to the sanitary problem, in order to avoid the problem of repeated use in the medical treatment process, the disposable injection needle is needed to be used for medical treatment injection, when the existing injection needle is used, the protection mechanism at the needle head position is generally detachable, the detachable protection mechanism is easy to cover after being used, the sanitary condition is worry, when the device is used as a whole, the sealing effect of the tail end at the rear side is to be enhanced, the inner space of the cylinder cannot be isolated from the outside air, and when the device is used, if various medicines are required to be absorbed, the medicines are easy to be mixed, and the quality of the residual medicines is influenced.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a disposable internal injection needle to solve the problems that the sealing effect of the rear tail end proposed in the background art needs to be enhanced and the internal space of a cylinder cannot be isolated from the outside air.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a disposable internal syringe needle, includes the barrel, the barrel front end face is equipped with the probe head, the probe head front end runs through and is equipped with the syringe needle, the inside slip of barrel is equipped with the rubber piston, rubber piston rear end connection is equipped with the push rod, the push rod is provided with a plurality ofly, a plurality of push rod rear end connection is equipped with pushing plate piece, barrel rear end face can be dismantled and is equipped with the separation piece, separation piece outer end face front side is equipped with the collar, collar and barrel threaded connection, separation piece outer end face rear side is equipped with the water-blocking skin ring, separation piece rear end face week left and right sides all is connected and is equipped with the action bars, correspond a plurality of on the separation piece the sliding tray has all been seted up to the push rod.

In a further preferred mode, the upper end face of the cylinder body is provided with a liquid adding pipe in a penetrating mode, and the liquid adding pipe is provided with a sealing plug, so that liquid can be conveniently added into the cylinder body.

In a further preferred embodiment, the upper end face of the liquid adding pipe is provided with a protective cap, the top of the outer end face of the liquid adding pipe is provided with a fixing ring corresponding to the protective cap, and the protective cap is in threaded connection with the fixing ring to protect the liquid adding pipe and the sealing plug.

In a further preferred embodiment, the bottom end of the inner wall of the protective cap is provided with a limiting plate corresponding to the fixing ring, and a plurality of limiting plates are arranged in the circumferential direction of the limiting plate to protect the protective cap and avoid repeated installation and use.

In a further preferred embodiment, the front end of the probe head is detachably provided with an end cap, the left side and the right side of the rear end face of the end cap are respectively provided with a connecting plate, and the front end face of the probe head corresponds to the two connecting plates and is provided with connecting grooves, so that the connection is convenient.

In a further preferred mode, the two connecting plates are provided with triangular limiting blocks, the two connecting groove inner walls are provided with triangular limiting grooves corresponding to the triangular limiting blocks, the installation is convenient to limit, and the repeated use of the connecting plates is avoided.

(III) beneficial effects

Compared with the prior art, the utility model provides a disposable in-vivo injection needle, which has the following beneficial effects:

according to the utility model, the blocking piece with the operating rod is grasped, the blocking piece is installed, the installation ring on the blocking piece is rotationally installed with the cylinder body, the threads are matched, after the blocking piece is installed to a proper position, the water-blocking skin ring seals and prevents water at the installation position, the integral sealing effect of the device is improved, and bacteria and the like in the outside air are prevented from entering the inner wall of the cylinder body;

the design of the protective cap, the limiting plate at the bottom end of the protective cap is preferably made of elastic materials, the protective cap is rotated after the limiting plate is broken off, the protective cap is in threaded fit with the fixing ring, the protective cap is rotated and taken down, the liquid adding pipe with the sealing plug is exposed to the external environment after the protective cap is taken down, the external needle tube is used for sucking another needed medicine, and then the external needle tube penetrates through the sealing plug to drive the medicine into the barrel, so that liquid can be conveniently added, the liquid adding position is protected, and secondary use is avoided;

the design of end cap presses the connecting plate that has the triangle stopper, and connecting plate and triangle stopper preferentially select the elasticity material, takes out the triangle stopper on the connecting plate from the triangle spacing inslot of spread groove, takes out the back and adds the liquid medicine of needs to the barrel inside, realizes the protection to injection needle tubing department, avoids the end cap to reinstallate.

Drawings

FIG. 1 is a schematic view showing the overall structure of a single-use in-vivo injection needle according to the present utility model;

FIG. 2 is a schematic view of the overall structure of the disposable in-vivo injection needle device of the present utility model, preferably without a protective cap and end cap;

FIG. 3 is an exploded view of the rubber piston, push rod, push plate, blocking piece, mounting ring, water-blocking sheath ring and operating lever mating structure preferred for the single-use in-vivo injection needle of the present utility model;

FIG. 4 is a schematic view showing the cooperation structure of the protective cap and the limiting plate of the disposable in-vivo injection needle;

FIG. 5 is a schematic view of the mating structure of the end cap, the connecting plate and the triangular limiting block of the disposable in-vivo injection needle according to the present utility model;

fig. 6 is a schematic view of the fitting structure of the probe head of the single-use in-vivo injection needle according to the present utility model.

In the figure: 1. a cylinder; 2. a probe head; 3. an injection needle; 4. a rubber piston; 5. a push rod; 6. pushing plate pieces; 7. a blocking sheet; 8. a mounting ring; 9. closing the water skin ring; 10. an operation lever; 11. a sliding groove; 12. a liquid adding tube; 13. a sealing plug; 14. a protective cap; 15. a fixing ring; 16. a limiting plate; 17. an end cap; 18. a connecting plate; 19. a connecting groove; 20. a triangular limiting block; 21. triangular limit grooves.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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.

Embodiment one:

referring to fig. 1-3 and 6, the disposable internal injection needle comprises a barrel 1, a probe head 2 is arranged on the front end face of the barrel 1, an injection needle head 3 is arranged at the front end of the probe head 2 in a penetrating manner, a rubber piston 4 is arranged in the barrel 1 in a sliding manner, push rods 5 are arranged at the rear ends of the rubber piston 4 in a connecting manner, a plurality of push rods 5 are arranged at the rear ends of the push rods 5 in a connecting manner, a baffle plate 7 is detachably arranged on the rear end face of the barrel 1, a mounting ring 8 is arranged on the front side of the outer end face of the baffle plate 7, the mounting ring 8 is in threaded connection with the barrel 1, a water-blocking skin ring 9 is arranged on the rear side of the outer end face of the baffle plate 7, operating rods 10 are arranged on the left side and the right side of the rear end face of the baffle plate 7 in a connecting manner, and sliding grooves 11 are formed in the baffle plate 7 corresponding to the plurality of push rods 5.

Referring to fig. 1, 2 and 4, in this embodiment, an upper end face of a barrel 1 is provided with a filling tube 12 in a penetrating manner, a sealing plug 13 is provided on the filling tube 12, an upper end face of the filling tube 12 is provided with a protective cap 14, a top of an outer end face of the filling tube 12 is provided with a fixing ring 15 corresponding to the protective cap 14, the protective cap 14 is in threaded connection with the fixing ring 15, a plurality of limiting plates 16 are provided at the bottom end of an inner wall of the protective cap 14 corresponding to the fixing ring 15 in a circumferential direction, the limiting plates 16 are preferably made of elastic materials, after the limiting plates 16 are broken off, the protective cap 14 is rotated, the protective cap 14 and the fixing ring 15 are in threaded fit, the protective cap 14 is removed in a rotating manner, the filling tube 12 with the sealing plug 13 is exposed to an external environment, and after another required medicine is sucked by an external needle tube, the external needle tube penetrates through the sealing plug 13, and is driven into the barrel 1.

Referring to fig. 1, 2, 5 and 6, in this embodiment, the front end of the probe head 2 is detachably provided with an end cap 17, both sides of the rear end face of the end cap 17 are provided with connection plates 18, the front end face of the probe head 2 is provided with connection grooves 19 corresponding to the two connection plates 18, the two connection plates 18 are provided with triangular limit blocks 20, the inner walls of the two connection grooves 19 are provided with triangular limit grooves 21 corresponding to the triangular limit blocks 20, the connection plates 18 with the triangular limit blocks 20 are pressed, the connection plates 18 and the triangular limit blocks 20 are preferably made of elastic materials, and the triangular limit blocks 20 on the connection plates 18 are taken out from the triangular limit grooves 21 of the connection grooves 19.

Embodiment two:

in sum, when in use, firstly, the whole device is installed in production, the barrier sheet 7 with the operation rod 10 is gripped, the barrier sheet 7 is installed, the installation ring 8 on the barrier sheet 7 and the cylinder 1 are rotationally installed, the thread fit is realized, after the barrier sheet 7 is installed to a proper position, the water-blocking skin ring 9 is sealed and waterproof to the installation position, the whole device is assembled and completed, when the device is required to be used, firstly, the end cap 17 at the front end is detached, the connection plate 18 with the triangular limiting block 20 is pressed, the connection plate 18 and the triangular limiting block 20 are preferably made of elastic materials, the triangular limiting block 20 on the connection plate 18 is taken out from the triangular limiting groove 21 of the connection groove 19, required liquid medicine is added into the cylinder 1 after the taking out, firstly, the push rod 5, the push rod 6 and the rubber piston 4 are integrally pushed into the innermost side of the cylinder 1, the push rod 5 slides relative to the sliding groove, the probe head 2 with the injection needle 3 stretches into the medicine to be sucked, the push rod 6 is gripped, the push rod 6, the push rod 5 and the rubber piston 4 are pulled outwards, the medicine is sucked into the inside the cylinder 1, and the water-blocking skin ring 9 is preferably made of elastic materials.

Embodiment III:

in sum, when in use, after absorbing a certain amount of certain medicine, when needing to absorb another medicine, directly absorb with injection needle 3, easily lead to the medicine to mix, influence the normal use of surplus medicine, consequently, need take off helmet 14, dismantle helmet 14, the limiting plate 16 of helmet 14 bottom is preferentially selected to use elastic material, break off limiting plate 16 back off, rotate helmet 14, helmet 14 and solid fixed ring 15 screw-thread fit, take off helmet 14 rotation, take off helmet 14 after, the filling pipe 12 with sealing plug 13 exposes in external environment, absorb another medicine of needs with external needle tubing after, external needle tubing passes sealing plug 13, throw medicine into barrel 1 inside, realize mixing.

In all the above mentioned embodiments, the welding, the matching connection of the bolt and the nut, the bolt or the screw connection or other known connection modes can be selected according to the actual situation, and are not described in detail herein, the above description refers to the write-in fixed connection, and the welding is preferentially considered, but the protection scope of the present utility model is not limited thereto, and any person skilled in the art should be covered by the protection scope of the present utility model if the technical scheme and the inventive concept thereof are equivalent or changed within the scope of the present utility model.

Claims (6)

1. Disposable internal syringe needle, including barrel (1), barrel (1) front end face is equipped with surveys tube head (2), it runs through and is equipped with syringe needle (3) to visit tube head (2) front end, its characterized in that, barrel (1) inside slip is equipped with rubber piston (4), rubber piston (4) rear end connection is equipped with push rod (5), push rod (5) are provided with a plurality of push rod (5) rear end connection is equipped with push plate piece (6), barrel (1) rear end face can be dismantled and be equipped with separation piece (7), separation piece (7) outer end face front side is equipped with collar (8), collar (8) and barrel (1) threaded connection, separation piece (7) outer end face rear side is equipped with closes water skin ring (9), separation piece (7) rear end face week both sides all are connected and are equipped with action bars (10), correspond a plurality of on separation piece (7) push rod (5) all have seted up sliding tray (11).

2. The single use internal injection needle of claim 1, wherein: the upper end face of the cylinder body (1) is provided with a liquid adding pipe (12) in a penetrating mode, and the liquid adding pipe (12) is provided with a sealing plug (13).

3. The single use internal injection needle of claim 2, wherein: the upper end face of the liquid adding pipe (12) is provided with a protective cap (14), the top of the outer end face of the liquid adding pipe (12) is provided with a fixing ring (15) corresponding to the protective cap (14), and the protective cap (14) is in threaded connection with the fixing ring (15).

4. A single use internal injection needle according to claim 3, wherein: limiting plates (16) are arranged at the bottom ends of the inner walls of the protective caps (14) corresponding to the fixing rings (15), and a plurality of limiting plates (16) are arranged in the circumferential direction.

5. The single use internal injection needle of claim 1, wherein: the end cap (17) is detachably arranged at the front end of the probe head (2), connecting plates (18) are arranged on the left side and the right side of the rear end face of the end cap (17), and connecting grooves (19) are formed in the front end face of the probe head (2) corresponding to the two connecting plates (18).

6. The single use internal injection needle of claim 5, wherein: triangular limiting blocks (20) are arranged on the two connecting plates (18), and triangular limiting grooves (21) are formed in the inner walls of the two connecting grooves (19) corresponding to the triangular limiting blocks (20).