Protective sleeve syringe needle

Abstract

The utility model relates to the technical field of syringe needles, and discloses a protective sleeve syringe needle which comprises a needle tube head, a protective tube is slidably connected to the outside of the needle tube head, two guide plates are fixedly connected to the outer side wall of the needle tube head, a rotating ring is rotatably connected to the outer side wall of the protective tube, and the guide plates are fixedly connected to the outer side wall of the rotating ring. Two transmission rings are fixedly connected to the interior of the rotating ring, limiting plates are slidably connected to the left end and the right end of the top of the protection pipe, side plates are fixedly connected to the front sides and the rear sides of the limiting plates, springs are fixedly connected to the far sides of the multiple side plates, and a telescopic pipe is slidably connected to the inner wall of the protection pipe; arc-shaped columns are slidably connected to the left end and the right end of the top of the telescopic pipe. According to the disposable syringe, force in the opposite direction is given to the limiting plate through the side plate, penetrates through the interior of the protection tube and is clamped in the needle tube head, so that the protection tube is fixed, infection caused by the falling condition is avoided, and then the use risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to syringe needle technical field especially relates to a protective sleeve syringe needle. BACKGROUND

[0002] Syringe needle is an important component of syringe, usually made of stainless steel and other metal materials, its shape is slender tubular, one end is sharp bevel, used for puncturing skin, blood vessels or other tissues, the other end is connected with the needle cylinder of syringe, so as to inject medicine, liquid etc. through needle into body or extract liquid etc. from body, in the medical operation process, medical staff uses ordinary syringe, if not careful, can be pricked by needle. According to statistics, every year, a large number of medical staffs in the world suffer needle prick, and protective sleeve syringe needle can immediately put needle on protective sleeve after use, greatly reduces the risk of needle prick, protects the safety of medical staff, reduces the infection caused by needle prick, such as blood-borne diseases such as hepatitis b, hepatitis c, AIDS

[0003] Take out the syringe with protective sleeve from sterile packaging, check whether the protective sleeve of syringe needle is intact, ensure that the whole syringe is not damaged, and the dose scale is clear and readable. After confirming that there is no error, according to the actual demand, extract the appropriate amount of medicine or liquid, in the extraction process, the protective sleeve can effectively prevent external pollutants from contacting the needle, and ensure the sterility of the medicine.

[0004] And in the prior art, part of the protective sleeve syringe needle is fixed by friction force during use, however, due to improper operation or the loose fixation of the protective sleeve itself, the protective sleeve is loose or even falls off before use, so that the needle is exposed, increasing the risk of contamination, therefore, aiming at the above problems, a protective sleeve syringe needle is provided to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a protective sleeve syringe needle, which aims at improving the problem that part of the protective sleeve syringe needle in the prior art is loose or even falls off due to the installation by friction force during use, increasing the risk of infection.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides an injection needle of protective sleeve, including needle tube head, the outside of needle tube head is slidably connected with the protective tube, the outside wall of needle tube head is fixedly connected with two guide plates, the outside wall of protective tube is rotatably connected with the rotating ring, the inside of rotating ring is fixedly connected with two transmission rings, the top left and right two ends of protective tube are slidably connected with the limiting plate, the front and back sides of limiting plate are fixedly connected with the side plate, the far side of multiple side plates is fixedly connected with the spring, the inner wall of protective tube is slidably connected with the telescopic tube, the top left and right two ends of telescopic tube are slidably connected with the arc column, the top left and right two ends of two arc columns are fixedly connected with the opening plate with the top left and right two ends of telescopic tube, the front and back ends of opening plate are rotatably connected with the rotating plate, the far end of multiple rotating plates is rotatably connected with two work-shaped plates, the near side of two work-shaped plates is fixedly connected with reset assembly for providing reset effect for work-shaped plate,

[0008] As a further description of the above technical solution:

[0009] Two reset assemblies all include two positioning rings, the far side of two positioning rings is fixedly connected on the near side of two work-shaped plates respectively, the outside of two positioning rings is sleeved with the torsion spring;

[0010] As a further description of the above technical solution:

[0011] The top left and right sides of needle tube head are all provided with limiting opening, and the near end of two limiting plates is slidably connected in the inside of two limiting openings respectively;

[0012] As a further description of the above technical solution:

[0013] The inside of limiting plate is provided with inclined opening, and the outside of transmission ring is slidably connected in the inside of inclined opening;

[0014] As a further description of the above technical solution:

[0015] The inside of rotating ring is slidably connected in the outside of two guide plates, and the near side of two transmission rings is slidably connected in the outside wall of needle tube head;

[0016] As a further description of the above technical solution:

[0017] The outside of multiple side plates is slidably connected in the top left and right two ends of protective tube respectively, and the far end of multiple springs is fixedly connected in the top left and right two ends of protective tube respectively;

[0018] As a further description of the above technical solution:

[0019] The interior left and right sides of the protective tube are provided with a plurality of arc-shaped openings, and the outer sides of the arc-shaped columns are slidably connected in the arc-shaped openings.

[0020] Further description of the above technical solution:

[0021] The outer sides of the two arc-shaped columns are slidably connected to the inner walls of the protective tube on the left and right sides, and the distal sides of the two limiting plates are in contact with the inner walls of the rotating ring on the left and right sides.

[0022] The utility model has the advantages of the following:

[0023] 1. In the utility model, the limiting plate slides and drives the two side plates to slide and press the springs at the same time, so that the springs can store elastic potential energy. Then, the side plates give the limiting plate a force in the opposite direction, which passes through the interior of the protective tube and is clamped in the interior of the needle tube head, thereby fixing the protective tube, avoiding the situation of falling and being infected, and reducing the use risk.

[0024] 2. In the utility model, the two opposite I-shaped plates slide to the distal side and drive the positioning rings to slide at the same time. The two positioning rings also stretch the torsional springs, so that the torsional springs store elastic potential energy. Then, the resetting force is transmitted to the arc-shaped column, so that the arc-shaped column is reset and clamped in the interior of the arc-shaped opening 11, thereby adjusting the length of the protective tube to adapt to needle tube heads of different lengths, and saving the placement space. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a perspective view of a protective sleeve syringe needle head proposed in the utility model;

[0026] Figure 2 It is a structure schematic view of a guide plate of a protective sleeve syringe needle head proposed in the utility model;

[0027] Figure 3 It is Figure 2 a view of A in the middle;

[0028] Figure 4 It is a structure schematic view of a limiting plate of a protective sleeve syringe needle head proposed in the utility model;

[0029] Figure 5 It is Figure 4 a view of B in the middle;

[0030] Figure 6 It is Figure 2 a view of C in the middle.

[0031] LEGEND:

[0032] 1, needle tube head; 2, protective tube; 3, guide plate; 4, rotating ring; 5, transmission ring; 6, limiting plate; 7, inclined opening; 8, side plate; 9, spring; 10, limiting opening; 11, arc-shaped opening; 12, telescopic tube; 13, arc-shaped column; 14, opening plate; 15, rotating plate; 16, I-shaped plate; 17, positioning ring; 18, torsional spring. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0034] Referring to Figures 1 to 3 An embodiment provided by the utility model: a protective sleeve syringe needle head, including needle tube head 1, needle tube head 1 adopts top plastic, and needle tube iron is used for connecting with needle tube. The outside of needle tube head 1 is slidably connected with protective tube 2, and protective tube 2 is selected from transparent medical plastic, which can clearly observe the state of internal needle tube head 1. The outer side wall of needle tube head 1 is fixed with two guide plates 3, and the guide plate 3 is arc-shaped. The outer side wall of protective tube 2 is rotatably connected with rotating ring 4, and the size of the inside of rotating ring 4 is matched with protective tube 2. The inside of rotating ring 4 is slidably connected with the outside of two guide plates 3, and when rotating ring 4 rotates, guide plate 3 can limit and support it. The inside of rotating ring 4 is fixedly connected with two transmission rings 5, and two transmission rings 5 are driven to rotate synchronously by rotating ring 4. The side close to the two transmission rings 5 is slidably connected with the outer side wall of needle tube head 1, and by the limitation of needle tube head 1, transmission ring 5 can stably slide;

[0035] The top left and right ends of protective tube 2 are slidably connected with limiting plate 6. Limiting plate 6 is used to limit the rotation of rotating ring 4. The side far away from the two limiting plates 6 is in close contact with the left and right sides of the inner wall of rotating ring 4, so that rotating ring 4 can rotate in close contact with limiting plate 6, preventing falling. The inside of limiting plate 6 is provided with inclined opening 7, which provides movement space for transmission ring 5. The outside of transmission ring 5 can smoothly slide in the inside of inclined opening 7, and when transmission ring 5 rotates with rotating ring 4, it will push limiting plate 6 to slide under the action of inclined opening 7. The front and rear sides of limiting plate 6 are fixedly connected with side plate 8, so that limiting plate 6 will drive side plate 8 to slide synchronously in the process of sliding. The outside of multiple side plates 8 is slidably connected with the top left and right ends of protective tube 2, and by the limitation of protective tube 2, side plate 8 can stably slide. The side far away from multiple side plates 8 is fixedly connected with spring 9, and by the squeezing of side plate 8 in the process of sliding, spring 9 can store elastic potential energy.

[0036] Referring to Figure 2 , Figure 4 and Figure 5 The far ends of the plurality of springs 9 are fixedly connected to the top left and right ends of the protective tube 2, and the springs 9 can be uniformly stressed by being fixed. The left and right top ends of the needle tube head 1 are each provided with a limiting opening 10, which is matched with the limiting plate 6. The proximal ends of the two limiting plates 6 are respectively slidably connected inside the two limiting openings 10, and when the limiting plate 6 is slid into place, the proximal end is clamped into the limiting opening 10 to fix the position of the protective tube 2.

[0037] Referring to Figure 1 , Figure 2 and Figure 6 The left and right sides of the interior of the protective tube 2 are each provided with a plurality of arc-shaped openings 11, which are semicircular. The inner wall of the protective tube 2 slidably connects a telescopic tube 12, which can be freely extended and retracted inside the protective tube 2, and is suitable for different lengths of needle heads. The left and right ends of the top of the telescopic tube 12 are each slidably connected with an arc-shaped column 13, and the arc-shaped column 13 can be stably slid by being limited by the telescopic tube 12. The outer parts of the two arc-shaped columns 13 are respectively slidably connected to the left and right sides of the inner wall of the protective tube 2, and the protective tube 2 is pressed against the arc-shaped column 13, so that the arc-shaped column 13 is retracted into the telescopic tube 12. The outer part of the arc-shaped column 13 is slidably connected inside the arc-shaped opening 11, and the arc-shaped column 13 is clamped by sliding in the arc-shaped opening 11. The proximal sides of the two arc-shaped columns 13 are each fixedly connected to the left and right ends of the top of the telescopic tube 12 with an opening plate 14, and there are a total of four opening plates 14, which are each fixed by glue;

[0038] The front and rear ends of the opening plate 14 are each rotatably connected with a rotating plate 15, and by pushing the rotating plate 15, the sliding force is transmitted to the opening plate 14 to make the opening plate 14 rotate, and there are a total of eight rotating plates 15, with two rotating plates 15 corresponding to each opening plate 14. The far ends of the plurality of rotating plates 15 are rotatably connected with two I-shaped plates 16, and there are a total of four I-shaped plates 16, with two rotating plates 15 corresponding to each I-shaped plate 16. The proximal sides of the two I-shaped plates 16 are fixedly connected with a reset assembly that provides a reset effect for the I-shaped plate 16. The two reset assemblies each include two positioning rings 17, and the distal sides of the two positioning rings 17 are respectively fixedly connected to the proximal sides of the two I-shaped plates 16 by glue, so that the I-shaped plate 16 will drive the positioning ring 17 to slide synchronously in the process of sliding. The outer part of the two positioning rings 17 is sleeved with a torsion spring 18, and when the I-shaped plate 16 is rotated under stress, it will drive the positioning ring 17 to stretch the torsion spring 18, so that the torsion spring 18 stores elastic potential energy, and after the external force disappears, the potential energy is released to reset the I-shaped plate 16.

[0039] Working principle: when the needle tube head 1 needs to be used, the rotating ring 4 is pinched and a counterclockwise rotating force is applied, then the two transmission rings 5 are driven to slide, at this time the transmission ring 5 will be in the inclined opening 7 opened in the limiting plate 6, the inclined surface is used to make the two limiting plates 6 slide to the far side and slide away from the inside of the needle tube head 1, at this time the protective tube 2 can be taken off, the needle tube head 1 is used, and in the process of sliding the limiting plate 6, the two side plates 8 are also driven to slide and the spring 9 is also squeezed, so that the spring 9 can store elastic potential energy, then through the side plate 8 a force in the opposite direction is given to the limiting plate 6 through the inside of the protective tube 2 and is clamped in the inside of the needle tube head 1, so as to complete the fixation of the protective tube 2, avoid the falling situation and be infected, and then reduce the use risk;

[0040] Then according to the length of the needle tube head 1, the telescopic tube 12 is pushed to slide in the inside of the protective tube 2, and at the same time abuts against the two arc-shaped columns 13, so that the two arc-shaped columns 13 slide to the near side and push the connected opening plate 14 to slide, so as to push the two rotating plates 15 connected to rotate, then the rotating force is transmitted to the I-shaped plate 16, so that the two opposite I-shaped plates 16 slide to the far side and drive the positioning ring 17 to slide respectively, and at the same time the two positioning rings 17 also stretch the torsion spring 18, so that the torsion spring 18 stores elastic potential energy, then the restoring force is transmitted to the arc-shaped column 13, so that the arc-shaped column 13 is reset and clamped in the inside of the arc-shaped opening 11, so as to adjust the length of the protective tube 2 to adapt to the needle tube head 1 of different lengths, and then save the placement space.

[0041] Finally, it should be pointed out that: the above only describes the preferred embodiments of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A shielded syringe needle comprising a needle cannula head (1), characterized in that: The outside of the needle tube head (1) is slidably connected with a protective tube (2), the outer side wall of the needle tube head (1) is fixedly connected with two guide plates (3), the outer side wall of the protective tube (2) is rotatably connected with a rotating ring (4), the inside of the rotating ring (4) is fixedly connected with two transmission rings (5), the top left and right ends of the protective tube (2) are slidably connected with limit plates (6), the front and rear sides of the limit plates (6) are fixedly connected with side plates (8), the far sides of the plurality of side plates (8) are fixedly connected with springs (9), the inner wall of the protective tube (2) is slidably connected with a telescopic tube (12), the top left and right ends of the telescopic tube (12) are slidably connected with arc-shaped columns (13), the near sides of the two arc-shaped columns (13) and the top left and right ends of the telescopic tube (12) are fixedly connected with opening plates (14), the front and rear ends of the opening plates (14) are rotatably connected with rotating plates (15), the far ends of the plurality of rotating plates (15) are rotatably connected with two I-shaped plates (16), the near sides of the two I-shaped plates (16) are fixedly connected with reset assemblies which provide reset effects for the I-shaped plates (16).

2. A shielded syringe needle according to claim 1, wherein: Both of the reset assemblies comprise two positioning rings (17), the far sides of the two positioning rings (17) are fixedly connected to the near sides of the two I-shaped plates (16) respectively, and the outside of the two positioning rings (17) is sleeved with a torsion spring (18).

3. A shielded syringe needle according to Claim 1, wherein: The top left and right sides of the needle tube head (1) are both provided with limit openings (10), and the near ends of the two limit plates (6) are slidably connected in the inside of the two limit openings (10) respectively.

4. A shielded syringe needle according to Claim 1, wherein: The inside of the limit plate (6) is provided with an inclined opening (7), and the outside of the transmission ring (5) is slidably connected in the inside of the inclined opening (7).

5. A shielded syringe needle according to Claim 1, wherein: The inside of the rotating ring (4) is slidably connected to the outside of the two guide plates (3), and the near sides of the two transmission rings (5) are slidably connected to the outer side wall of the needle tube head (1).

6. A shielded syringe needle according to Claim 1, wherein: The outside of the plurality of side plates (8) is slidably connected to the top left and right ends of the protective tube (2) respectively, and the far ends of the plurality of springs (9) are fixedly connected to the top left and right ends of the protective tube (2) respectively.

7. A shielded syringe needle according to claim 1 wherein: The left and right sides of the inside of the protective tube (2) are both provided with a plurality of arc-shaped openings (11), and the outside of the arc-shaped column (13) is slidably connected in the inside of the arc-shaped opening (11).

8. A shielded syringe needle according to claim 1 wherein: The outside of the two arc-shaped columns (13) is slidably connected to the left and right sides of the inner wall of the protective tube (2) respectively, and the far sides of the two limit plates (6) are in contact with the left and right sides of the inner wall of the rotating ring (4).

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