TWI804410B - needle guard - Google Patents

Abstract

The present invention relates to a protective cover for needles, which comprises: an outer sleeve part, the two ends of which are connected with each other at the head end opening and the tail end opening respectively, the outer sleeve part is provided with a spring buckle part, and the spring buckle part has a buckle facing inward. Block, the inner wall of the outer sleeve part has an inner convex part, and the inner convex part is closer to the tail end opening than the buckle block; The barrel part is set on the outer barrel part, the main barrel part is set on one end of the outer barrel part with a limit block and a barrel head opening, the needle barrel combination part has a combination opening connected to the barrel head opening, and the main barrel part has a concave surface on the outside. The fixed groove, the fixed groove is located between the limit block and the combination part of the needle barrel, after being installed in the needle barrel, the maximum length of the present invention in the stretched state will be greater than that in the folded state, and the outer sleeve can completely cover the needle, so that This achieves the effect of preventing others from being scratched by the needle.

Description

needle guard

The invention relates to a needle protection cover, which aims to prevent the used needle from scratching others and causing infection.

A syringe (syringe) is an instrument commonly used in medical activities (blood drawing, vaccine injection, pharmaceutical injection), which is often used together with injection needles to inject liquid or gas into body tissues or extract objects from them , is an indispensable tool nowadays.

However, the use of syringes is not quite safe, mainly because the above-mentioned syringes are commonly used in medical practices, that is to say, the needles at the front end must be contaminated with the body fluids of the contacts after use. It is important to know that many infectious diseases are transmitted through blood, wounds, and exchange of body fluids, such as hepatitis B, hepatitis C, and acquired immunodeficiency syndrome. And if you are scratched by a needle contaminated with the body fluids of a contact person, there is a risk of being infected with the disease, so the used needle must be handled carefully.

However, some of the cases of needle scratches after use are not caused by self-negligence. For example, in crowded emergency areas, there is a great possibility that they are hit by others, resulting in scratches by needles.

In view of the above problems, it is necessary to develop related products to minimize the possibility of medical staff being scratched by needles due to accidents, so as to improve the safety of medical staff during work and reduce occupational injuries. risk.

The present invention has a main cylinder part and an outer sleeve part. The main cylinder part can be combined with the syringe through the syringe assembly part and allow the syringe to pass through the present invention, and the outer sleeve part can have a retracted state relative to the main cylinder part. 1. Stretched state, when the needle is combined with the present invention in the folded state, it can be exposed to the opening of the head end of the present invention, and the maximum length of the present invention in the extended state is greater than that in the folded state, and the outer sleeve can completely cover the needle , so as to avoid the effect of needles scratching others.

In order to achieve the above function and purpose, the present invention provides a needle protection cover, which includes: an outer sleeve, the two ends of which are respectively connected to each other with a head end opening and a tail end opening, and the outer sleeve is provided with an elastic Buckle part, the elastic buckle part has a buckle block inwardly, the inner wall of the outer sleeve part has an inner convex part, and the inner convex part is closer to the tail end opening than the buckle block; and a main body cylinder part The main cylinder part has a connected main cylinder part and a syringe combination part, the main cylinder part is slidably inserted into the outer sleeve part, and one end of the main cylinder part inserted into the outer sleeve part has a limiting Block, a cylinder head opening, the syringe combination part has a combination opening connected to the cylinder head opening, the main cylinder part has a fixed groove showing a depression on the surface, the fixed groove is located between the limit block and the needle cylinder Between the combined parts; wherein the outer sleeve member has a retracted state and an extended state relative to the main cylinder member. The retracted state is that the buckle block is buckled in the fixing groove. Between the buckle block and the inner convex part.

Further, the fixing groove is in the shape of a ring.

Further, the main cylinder part also includes a main section and a tapered section, the tapered section is connected between the limiting block and the main section, and the thickness of the tapered section is from the main section to the limiting section. The direction of the block tapers inward.

Further, wherein the oblique shrinkage sections and the limiting blocks are plural, and each limiting block is partially connected with multiple obliquely constricted sections, and partly connected with a single obliquely constricted section, and the plurality of limiting blocks and the plurality of obliquely constricted sections are arranged in a ring shape.

Further, the inner convex part is in the shape of an arc sheet.

For a more detailed understanding of the implementation of the present invention, please also watch it with the drawings. As shown in the first figure to the seventh figure, the present invention is a needle protective cover, which includes: an outer sleeve 1, and its two ends They are a head-end opening 11 and a tail-end opening 12 that communicate with each other respectively. The outer sleeve member 1 is provided with a snap button 13, and the snap button 13 has a buckle block 14 facing inward. The wall has an inner convex portion 15, which is closer to the tail end opening 12 than the buckle block 14; and a main cylinder part 2, which has a main cylinder part 21 connected to it, a Syringe assembly part 22, the main barrel part 21 is slidably inserted in the outer sleeve part 1, and the main barrel part 21 is inserted in the outer sleeve part 1 and has a limit block 211 and a barrel head opening 212 at one end The syringe assembly part 22 has a combination opening 221 communicating with the cylinder head opening 212. The main cylinder part 21 has a fixed groove 213 showing a depression on the outside. The fixed groove 213 is located between the stopper 211 and the syringe. Between the combined parts 22; wherein the outer sleeve member 1 has a folded state and an extended state relative to the main body barrel member 2. The folded state is that the buckle block 14 is buckled in the fixing groove 213, and the extended state is the The limiting block 211 is located between the buckling block 14 and the inner protrusion 15 .

For the folded state, please refer to the first and third figures. The fixing groove 213 is adjacent to the syringe assembly part 22. Therefore, when the buckle block 14 is in the fixing groove 213, the outer sleeve 1 as a whole will be relatively close as shown in the figure. The syringe assembly part 22, and the number of the snap parts 13 in this embodiment is two as an example, so the number of buckle blocks 14 is also two.

For the extended state, please refer to Figures 4 to 7. The limit block 211 is located between the buckle block 14 and the inner convex part 15. The inner convex part 15 can limit the displacement of the limit block 211, preventing the user from exerting too much force and causing the main cylinder to The part 21 is separated from the outer sleeve member 1, and the buckle block 14 can prevent the reset of the limit block 211, so as to prevent the outer sleeve member 1 from easily changing back to the stretched state so that the protective effect is lost.

Continuing the above content, the embodiment of the present invention is further described in detail. As shown in the eighth figure, the main cylinder 2 can be fastened to the buckle finger part 1001 of the syringe 100 with the syringe assembly part 22, and the syringe 100 can be passed through the In the present invention, if the installation of the present invention relative to the syringe 100 can be completed, and the present invention presents a retracted state at this time, the needle 1002 will be exposed to the head end opening 11 of the present invention. When the connected syringe 100 is used up, just As shown in Figure 9, pinch the outer sleeve 1 with one hand and pull out the main body 2 together with the syringe 100. At this time, the present invention is in a stretched state, and the outer sleeve 1 can completely cover the needle 1002, so that The effect of avoiding the used needle 1002 from scratching others is achieved. In summary, this creation does improve the defects of the previous syringes, and it is novel and progressive.

As shown in the second figure, the fixing groove 213 is in the shape of a ring. Since the outer sleeve member 1 and the main sleeve member 2 of the present invention are designed in a cylindrical shape, the outer sleeve member 1 is easy to rotate relative to the main sleeve member 2. Therefore, the fixing groove 213 is in the shape of a ring, so that no matter how the outer sleeve member 1 rotates relative to the main cylinder member 2 , the buckling block 14 can be easily buckled into the fixing groove 213 .

As shown in Figures 2 to 10, the main barrel 21 also includes a main section 214 and a tapered section 215, the tapered section 215 is connected between the limiting block 211 and the main section 214, and the tapered section 215 is connected to the main section 214. The thickness of the shrinking section 215 is tapered inwardly from the main section 214 to the direction of the limiting block 211, wherein the obliquely shrinking section 215 and the limiting block 211 are plural, and part of each limiting block 211 is connected with complex numbers of oblique shrinkage The segment 215 is partially connected with a single oblique segment 215, and the plurality of limiting blocks 211 and the plurality of oblique segments 215 are arranged in a ring shape. With such a structure, during the displacement of the limit block 211 between the buckle block 14 and the inner convex part 15, the buckle block 14 can guide the oblique shrinkage section 215 to shrink inward (as shown in the tenth figure), so that the limit block 211 is easier to enter between the buckle block 14 and the inner convex part 15 but is difficult to reset, which indeed makes the present invention easy to stretch but difficult to fold.

As shown in the second figure, the inner convex portion 15 is in the shape of an arc, and the number of the inner convex portion 15 in this embodiment is two, and the shape of the arc can more comprehensively prevent the limit block 211 from breaking away from the outer surface. Sleeve piece 1.

The above are only preferred embodiments for explaining the present invention, and are not intended to limit the present invention in any form. Therefore, any modification of the present invention under the spirit of the same invention Or changes, which are other forms that can be implemented and have the same effect, should still be included in the intended protection scope of the present invention.

To sum up, the "Needle Protector" of the present invention is indeed fully in line with the needs of industrial development in terms of practicability and cost-effectiveness, and the disclosed structural invention also has an unprecedented innovative structure, so it has " There should be no doubt about the novelty, and the present invention can improve the function more than the conventional structure, so it is also "progressive". And I sincerely hope that Junju will review it as soon as possible and give it affirmation.

1: Outer sleeve piece 11: Opening at the head end 12: end opening 13: Buckle part 14: deduction block 15: Inner convex part 2: Main cylinder 21: Main barrel 211: limit block 212: barrel head opening 213: fixed ditch 214: Main paragraph 215: Slanted section 22: Syringe assembly department 221: combined opening 100: syringe 1001: finger buckle 1002: Needle

The first figure is a three-dimensional schematic view of the present invention in a folded state. The second figure is an exploded schematic view of the present invention. The third figure is a schematic cross-sectional view of line segment III-III in the first figure. Figure 4 is a three-dimensional schematic view of the present invention in an extended state. The fifth figure is a schematic cross-sectional view of line segment V-V in the fourth figure. The sixth figure is a schematic cross-sectional view of line segment VI-VI in the fourth figure. The seventh figure is a schematic cross-sectional view of the three-dimensional part in the stretched state of the present invention The eighth figure is a schematic diagram of the present invention installed in a syringe. Figure 9 is a schematic diagram of operating the present invention to the stretched state after the syringe is used. The tenth figure is a schematic diagram of the inward shrinkage of the buckle block guide oblique shrinkage section.

1: Outer sleeve piece

13: Buckle part

2: Main cylinder

22: Syringe assembly department

221: combined opening

Claims (4)

A protective cover for needles, which includes: an outer sleeve member, the two ends of which are respectively a head end opening and a tail end opening connected to each other, the outer sleeve member is provided with a snap button, and the snap button has a A buckle block, the inner wall of the outer sleeve member has an inner protrusion, the inner protrusion is closer to the tail end opening than the buckle block; and a main body cylinder, the main body cylinder has a connected main body A barrel part and a needle barrel combination part, the main barrel part is slidably inserted into the outer sleeve part, and one end of the main barrel part inserted into the outer sleeve part has a limit block and a barrel head opening, and the needle The cylinder assembly part has a combination opening communicating with the cylinder head opening, and the main cylinder part has a fixed groove showing a depression on the outside, and the fixed groove is located between the limit block and the syringe assembly part; the outer sleeve part Relative to the main cylinder, it has a folded state and an extended state, the folded state is that the buckle block is buckled in the fixing groove, and the extended state is that the limiting block is located between the buckle block and the inner convex part ; Wherein the main cylinder part also includes a main section and a tapering section, the tapering section is connected between the limiting block and the main section, the thickness of the tapering section is from the main section to the limiting block The direction tapers inwards. The needle guard according to Claim 1, wherein the fixing groove is in the shape of a ring. The needle protective cover as described in Claim 1, wherein the obliquely contracted sections and the limiting blocks are plural, and part of each limiting block is connected to a plurality of obliquely contracted sections, and part is connected to a single obliquely contracted section, the plurality of limiting blocks, The plurality of obliquely contracted segments are arranged in a ring shape. The needle shield according to claim 1, wherein the inner convex portion is in the shape of an arc.

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