CN220442983U - Needleless cap injector with needle protection box - Google Patents

Abstract

The utility model provides a take needleless cap syringe of syringe needle protection casket, relates to the medical supplies field, includes cylinder and syringe needle, still includes protection casket, coupling mechanism and locking mechanical system, and the protection casket seals the cladding in the syringe needle outside, divide into a plurality of casings, and the casing rotatable setting is opened or is sealed the syringe needle in the syringe needle outside; the connecting mechanism is arranged on the needle cylinder, and the shell can be rotatably arranged on the connecting mechanism around the connecting mechanism; the locking mechanism is arranged at the end part of the protection box and comprises an extension section, threads and a nut, and the extension section is connected with the end part of one of the shells; threads are formed on the extension and extend to the ends of all the shells; the nut is in threaded fit with the thread, the nut can be arranged on the extension section in a movable mode and can be moved to the outer side of the joint of other shells and the extension section to lock the protection box so as to seal the needle, the protection box can be arranged on the needle cylinder in a rotatable mode, the needle cylinder can be opened or sealed through rotation of the shells, and medical staff can conveniently and rapidly finish taking and containing of the needle.

Description

Needleless cap injector with needle protection box

Technical Field

The utility model belongs to the field of medical supplies, and particularly relates to a needleless cap injector with a needle protection box.

Background

Syringes are a commonly used medical device. Existing syringes are covered with a needle cap (sheath) for protecting the needle in order to prevent the needle from penetrating the sterile packaging bag during storage and transportation. Before the medical staff uses the injector, the needle cap needs to be pulled out to expose the needle. After the use is finished, the needle cap needs to be sleeved again to protect the needle. The existing needle cap is generally made into a barrel shape with one end being opened, the needle is inserted from the opening, and the opening is tightly matched with the outer wall of the needle seat, so that the inner diameter of the opening is smaller, medical staff is not easy to align the opening when inserting the needle, the needle is inserted to deviate, the finger is injured, and particularly if the needle is injured by the used needle, the risk of infection of HIV, treponema pallidum, hepatitis B virus and the like exists. And the second disadvantage is that: the traditional needle cap is barrel-shaped, is easy to roll off, and is easy to drop off and pollute the ground. And the third disadvantage is: most of the needles and the needle caps are inserted and pulled into bayonets, which is laborious, and time and effort are wasted in inserting and pulling out. The above disadvantages are to be improved.

Disclosure of Invention

The object of the present utility model is to overcome the drawbacks of the prior art and to provide a needleless cap syringe with a needle protection cartridge.

The utility model adopts the following technical scheme:

the needle-cap-free injector with the needle protection box comprises a needle cylinder, a needle, a protection box, a connecting mechanism and a locking mechanism, wherein the protection box is hermetically coated on the outer side of the needle and is divided into a plurality of shells, and the shells are rotatably arranged on the outer side of the needle to open or seal the needle; the connecting mechanism is arranged on the needle cylinder, and the shell can be rotatably arranged on the connecting mechanism around the connecting mechanism; the locking mechanism is arranged at the end part of the protection box and comprises an extension section, threads and a nut, and the extension section is connected with the end part of one of the shells; threads are formed on the extension and extend to the ends of all the shells; the nut is matched with the screw thread, can be movably arranged on the outer side of the connecting part of the extension section and the other shell and the extension section to lock the protective box so as to seal the needle.

Preferably, the end part of the extension section is also provided with a limiting section for preventing the nut from moving outwards to be separated.

Preferably, the protective box comprises a sleeve ring and a limiting ring, wherein the sleeve ring is detachably sleeved on the needle cylinder; the limiting rings are arranged on the lantern rings and correspond to the shells one by one, and accommodating cavities capable of clamping the shells are formed in the limiting rings.

Preferably, the lantern ring and the limiting ring are both made of elastic materials, a notch which is convenient to open and sleeved on the needle cylinder is formed in the lantern ring, the limiting ring is arc-shaped and matched with the shell, and the width of the opening of the accommodating cavity is smaller than that of the shell.

Preferably, the connecting mechanism is a plurality of hinges, the hinges are respectively in one-to-one correspondence with the shells, one end of each hinge is fixed on the needle cylinder, the other end of each hinge is arranged on the shell, and the shell is rotatably arranged on the needle cylinder through the hinges so as to open or seal the needle.

Preferably, the length of the extension is greater than the width of the nut, and the nut is fully movable by the threads in a direction away from the syringe onto the extension to separate the housings to open the protective case

As can be seen from the above description of the present utility model, compared with the prior art, the present utility model has the following beneficial effects: the protection box is rotatably arranged on the needle cylinder, the needle cylinder can be opened or sealed through the rotation of the shell, the needle can be conveniently and rapidly taken and stored when a medical worker uses the protection box, the working efficiency is improved, the risk of needle puncture can be avoided, when the nut is completely moved onto the limit section through threads, the shells can mutually rotate without mutual influence, the protection box can be smoothly opened to expose the needle, when the nut is moved onto the junction of the limit section and the protection box through threads, the shells cannot be moved due to the influence of the nut, the needle exposure caused by mistaken contact of the protection box when the nut is unnecessary is avoided, and the safety of the injector is further improved;

the limiting section can prevent the nut from excessively moving to be separated from the extending section, so that the stability of the locking mechanism is improved;

the clamping mechanism is detachably arranged on the needle cylinder through the lantern ring made of elastic materials, so that the needle cylinder is convenient to recycle, the shell after being opened can be fixed through the limiting ring made of elastic materials, the situation that the operation of medical staff is influenced due to unlimited rotation of the shell during use is avoided, and the safety is improved;

the opening is convenient for the lantern ring to open from one side and overlap on the cylinder from the side, and spacing ring holds the width of the opening width in chamber and is less than the width of casing, guarantees that the casing can restrict in the spacing ring and can not the slippage when the installation.

Drawings

FIG. 1 is a schematic diagram of a first embodiment of the present utility model;

FIG. 2 is a schematic diagram of a second embodiment of the present utility model;

FIG. 3 is an unlocking schematic of the locking mechanism of the present utility model;

FIG. 4 is a schematic locking view of the locking mechanism of the present utility model;

in the figure: 1-syringe, 2-syringe needle, 3-protection casket, 31-casing, 4-coupling mechanism, 5-locking mechanism, 51-extension, 52-screw thread, 53-nut, 54-spacing section, 6-fixture, 61-lantern ring, 62-spacing ring, 63-holding chamber, 64-opening.

Detailed Description

The utility model is further described below by means of specific embodiments.

Referring to fig. 1 to 4, a cap-free syringe with a needle 2 protecting case 3 includes a barrel 1, a needle 2, a protecting case 3, a connecting mechanism 4, a locking mechanism 5, and a holding mechanism 6.

The sealed cladding of protection casket 3 is in the syringe needle 2 outside, divide into a plurality of casing 31, and casing 31 rotatable setting is opened or is sealed syringe needle 2 in the syringe needle 2 outside, and protection casket 3 rotatable setting is on cylinder 1, can open or seal cylinder 1 through the rotation of casing 31, can accomplish taking and accomodating of syringe needle 2 fast when being convenient for medical personnel to use, improves work efficiency and can also avoid the risk of syringe needle 2 stabbing.

The connecting mechanism 4 is arranged on the needle cylinder 1, the shell 31 can be rotatably arranged on the needle cylinder 1 around the connecting mechanism, the connecting mechanism 4 is a plurality of hinges, the hinges are respectively in one-to-one correspondence with the shell 31, one end of each hinge is fixed on the needle cylinder 1, the other end of each hinge is arranged on the shell 31, and the shell 31 is rotatably arranged on the needle cylinder 1 through the hinges so as to open or seal the needle head 2.

The locking mechanism 5 is arranged at the end part of the protection box 3 and comprises an extension section 51, a thread 52, a nut 53 and a limit section 54, wherein the extension section 51 is connected with the end part of one of the shells 31; threads 52 are formed on extension 51 and extend to the ends of all of the housings 31; the nut 53 cooperates with the thread 52, is movably arranged on the extension 51 and is movable to the outside of the junction of the other housing 31 and the extension 51 to lock the protective case 3 to seal the needle 2; the limiting section 54 is provided at the end of the extension section 51 to prevent the nut 53 from being moved outward to come out. When the nut 53 moves to the limit section 54 completely through the thread 52, the shells 31 can rotate mutually without mutual influence, the protective box 3 can be opened smoothly to expose the needle 2, when the nut 53 moves to the junction of the limit section 54 and the protective box 3 through the thread 52, the shells 31 cannot move under the influence of the nut 53, the needle 2 is prevented from being exposed due to the mistaken contact of the protective box 3 when not necessary, and the safety of the syringe is further improved. Specifically, the length of the extension 51 is greater than the width of the nut 53, and the nut 53 can be moved completely by the threads 52 in a direction away from the syringe 1 onto the extension 51 to separate the housings 31 to open the protective case 3.

The clamping mechanism 6 is detachably arranged on the needle cylinder 1 to clamp the opened protective box 3, can be detached for recycling, and comprises a lantern ring 61 and a limiting ring 62, wherein the lantern ring 61 is detachably sleeved on the needle cylinder 1; the limiting rings 62 are arranged on the lantern rings 61 and correspond to the shells 31 one by one, and accommodating cavities 63 capable of clamping the shells 31 are formed in the limiting rings 62. Specifically, the collar 61 and the stop collar 62 are made of elastic materials, the collar 61 is formed with a notch 64 which is convenient to open and is sleeved on the syringe 1, the stop collar 62 is arc-shaped and is matched with the housing 31, and the width of the opening of the accommodating cavity 63 is smaller than that of the housing 31. The fixture 6 can be dismantled through the lantern ring 61 of elastic material and set up on needle cylinder 1, and cyclic utilization of being convenient for can also realize opening back casing 31's fixed through the spacing ring 62 of elastic material, avoids casing 31 unlimited rotation and influences medical personnel's operation when using, improves the security. The notch 64 facilitates the collar 61 to open from one side and sleeve the barrel 1 from the side, and the opening width of the retainer ring 62 accommodating chamber 63 is smaller than the width of the housing 31, ensuring that the housing 31 can be restrained in the retainer ring 62 without slipping when mounted.

The needle head 2 is detachably arranged on the needle cylinder 1, the needle head 2 can be detached, the needle head 2 can be sterilized and disinfected and replaced by a new needle head 2, and the waste caused by the fact that the manufacturing cost of the injector is too high and the injector is used once due to the protection box 3 and the locking mechanism 5 is avoided.

When in use, a worker rotates the nut 53 to completely move to the extension section 51 along the thread 52, at this time, each shell 31 of the protection box 3 is locked in a contact manner, then each shell 31 is rotated outwards around the hinge to expose the needle 2, and the shell 31 is continuously rotated backwards until the shell 31 and the limiting ring 62 are matched and fixed, and at this time, injection can be performed. After the injection is completed, the shell 31 is separated from the limiting ring 62 and is rotated to the position for sealing the needle head 2, the nut 53 is rotated to move to the connection position between the extension section 51 and the protection box 3, and the protection box 3 is locked, so that the needle head 2 is not exposed to the air due to the fact that the protection box 3 is opened by mistake. The needle 2 can be quickly and conveniently exposed through the protection box 3, the needle sleeve does not need to be pulled out forcefully, meanwhile, the protection box 3 can be limited to be opened through the locking mechanism 5 when not in use, the false touch is avoided, the safety is further improved, and the safety protection device is high in practicability.

The foregoing description is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, i.e., the utility model is not to be limited to the details of the claims and the description, but rather is to cover all modifications which are within the scope of the utility model.

Claims (6)

1. A needleless cap injector with a needle protection box, comprising a syringe and a needle, characterized in that: the protective box is hermetically coated on the outer side of the needle and is divided into a plurality of shells, and the shells can be rotatably arranged on the outer side of the needle to open or seal the needle; the connecting mechanism is arranged on the needle cylinder, and the shell can be rotatably arranged on the connecting mechanism around the connecting mechanism; the locking mechanism is arranged at the end part of the protection box and comprises an extension section, threads and a nut, and the extension section is connected with the end part of one of the shells; threads are formed on the extension and extend to the ends of all the shells; the nut is matched with the screw thread, can be movably arranged on the outer side of the connecting part of the extension section and the other shell and the extension section to lock the protective box so as to seal the needle.

2. A needleless cap injector with needle protection cartridge as claimed in claim 1 in which: the end part of the extension section is also provided with a limiting section for preventing the nut from moving outwards to be separated.

3. A needleless cap injector with needle protection cartridge as claimed in claim 1 in which: the protective box comprises a sleeve ring and a limiting ring, wherein the sleeve ring is detachably sleeved on the needle cylinder; the limiting rings are arranged on the lantern rings and correspond to the shells one by one, and accommodating cavities capable of clamping the shells are formed in the limiting rings.

4. A needleless cap injector with needle protection cartridge as claimed in claim 3 in which: the lantern ring and the limiting ring are both made of elastic materials, the lantern ring is provided with a notch which is convenient to open and sleeved on the needle cylinder, the limiting ring is arc-shaped and is matched with the shell, and the width of the opening of the accommodating cavity is smaller than that of the shell.

5. A needleless cap injector with needle protection cartridge as claimed in claim 1 in which: the connecting mechanism is a hinge, the hinges are provided with a plurality of hinges which are respectively in one-to-one correspondence with the shells, one end of each hinge is fixed on the needle cylinder, the other end of each hinge is arranged on the shell, and the shell is rotatably arranged on the needle cylinder through the hinges so as to open or seal the needle head.

6. A needleless cap injector with needle protection cartridge as claimed in claim 1 in which: the length of the extension is greater than the width of the nut, and the nut can be completely moved by the threads in a direction away from the syringe onto the extension to separate the housings to open the protective case.