TWI675645B - Rotating retractable safety needle - Google Patents

Abstract

A rotary retractable safety needle includes a syringe, a rotary sleeve, and a jacket. The syringe includes a syringe, a needle, and a needle core. The surface of the syringe has at least one protrusion, and the needle is combined with the needle. On the side of the barrel, the needle core is sleeved into the barrel, the rotary sleeve is sleeved on the surface of the barrel, and the surface of the sleeve has at least one arc-shaped hole, so that the protruding portion of the barrel passes through the arc-shaped hole, and the outer sleeve The rotating sleeve is provided, and the rotating sleeve can only rotate and cannot move, and the outer surface of the outer sleeve has at least a constant perforation, so that the protrusion of the syringe is guided to the straight perforation. After using the syringe to complete the injection, hold the jacket in one hand, and at the same time, rotate the rotary sleeve with the other hand. The arc-shaped hole pushes the protrusion to move. The protrusion is restricted to move straight up through the straight perforation, driving the The syringe is moved upwards, the needle is pulled out of the injection site and retracted into the jacket without rotating, so as to completely cover the needle, avoiding the situation that the person is infected with various blood infectious diseases due to needlestick, and improving safety.

Description

Rotary retractable safety needle

The invention relates to a safety needle, in particular to a safety retractable safety needle.

Press; Nursing staff's responsibility is to give patient care, and drug delivery is the most frequent and important work that cannot be mistaken in nursing care. Administration is divided into oral medication, injectable medication, and drip infusion, among which the use of a syringe is a more common medical practice.

Under the huge manpower of nurses and the high use rate of injection medical behavior, accidental occurrence of "needlestick" is endless. Syringes are commonly referred to as empty needles in clinical practice. The structure of empty needles mainly includes needles, syringes, and needle cores. Among them, the needles are made of metal and used to extract drugs and inject drugs, as well as the parts that come into contact with patients during blood extraction; needles The cylinder is made of plastic, which has a scale to check the dose of the drug and the part held by the hand; the needle core is made of plastic and rubber, which is used to pull back the medicine, push medicine and draw blood.

"Acupuncture" refers to the accident that the nursing staff accidentally punctured the needle of an empty needle while performing an injection medical treatment for a patient. The needle that has undergone the needle has usually contacted the patient's blood and infected the liver B, C The probability of blood-borne diseases such as liver and AIDS cannot be ignored, and acupuncture not only causes physical harm, but also increases the cost of medical resources and the worry and panic of the wounded, relatives and friends. From technical and vocational education to medical institutions, education on needle prevention and promotion of needle prevention has been continuously promoted. Among them, one-handed return of the needle cover and the needle cover are not returned directly to the needle collection box to prevent the needle from being removed by buckling. Acupuncture cannot completely avoid the occurrence of acupuncture.

In recent years, the use of safety needles has replaced traditional needles, but the existing safety needles still have many disadvantages: if the needle cannot be replaced for different purposes, the starting device covering the needle is difficult to operate or the steps are complicated, and the middle part of the needle is covered It is still exposed, the safety needle cover has not covered the needle when the needle is pulled, and it cannot be used for low-dose injections, injections that are not applied to non-muscular layers, and the needle cover is covered with open-type soft plastic.

The main disadvantage of the existing safety needles is that the needles are not covered when the needles are pulled out of the tissue layer after the injection of the drug. This phenomenon cannot avoid the danger of being stuck. The above shortcomings lead to the thorough implementation of safety needles in hospitals. Difficulties.

Then please refer to the attachment, the photos in the attachment show the existing safety needles, and the following is to explain the disadvantages of the existing safety needles:

Pull back break type:

1. Low fault tolerance, do not use vial powder to dilute drugs. Most vial drugs are in powder form. You need to dilute with distilled water before extracting an appropriate amount of drugs. At this time, all the water needs to be injected. restore.

2. The operation steps are complicated. After the injection, the needle needs to be pulled back to retract the needle into the syringe.

3. Needle needle body adopts spiral connection, can not be changed to increase the contact surface of the needle with the bevel to accelerate the drug withdrawal.

4. Needle treatment can only be performed after the needle is pulled on the injection contact surface, which is easy to puncture.

Sleeve rotation:

1. The operation steps are complicated. After the injection, the protective sleeve needs to be pushed forward and then locked to the side, but the locking point of the protective sleeve is not strong enough, and it is easy to slip off, resulting in needle sticking.

2. Needle treatment can only be performed after the needle is pulled out from the injection contact surface, which is easy to puncture.

Spring retracted:

1. The needle uses the spring force to make the needle bounce into the syringe, but the spring recoil force is large, which often scares the patient.

2. The needle and the syringe are integrally formed, and the needle cannot be replaced, which does not meet the need for replacing thicker needles for high-viscosity drugs or emergency cases.

3. Vial powder is not suitable for diluting drugs. Because most vial drugs are in powder form, they need to be diluted with distilled water before taking appropriate amount of drugs. In this design, when the distilled water is completely injected, the needle is retracted and cannot be used. Therefore, another empty needle is needed to pump medicine and injection, which increases the cost.

4. Plastic plus spring, higher production cost.

Needle gland type:

1. The most widely used safety needle in clinical practice, but there is a danger of needle sticking if the holding part of the gland is incorrect.

2. Needle treatment can be performed only after the needle is pulled out from the contact surface, which is easy to pierce.

3. After capping, the middle part of the needle is visible.

Needle half exposed:

1. The middle end of the needle is exposed, and there is also the possibility of needle sticking when the sleeve is loose.

2. Both hands are required: one hand for injection and one hand for side body sheath.

3. If the needle is skewed due to the angle during injection, it is not easy to ensure that the side body cover covers the needle and it is easy to puncture.

The invented rotary retractable safety needle developed by the present inventor aims to overcome the above-mentioned shortcomings, and has the characteristics of five extensions, as follows:

1. Safe coverage: When the needle is pulled from the tissue layer, the needle is completely covered to avoid needle sticking.

2. Needle exchangeability: According to different needs, the needle can be replaced.

3. Capacity adaptability: suitable for various doses.

4. Path variability: applicable to various injection methods.

5. Blood drawing availability: suitable for blood drawing.

Therefore, to design a safety needle that will not cover the needle of the syringe in order to allow the needle to be injected. After the injection of the needle of the syringe is completed, the needle can be fully retracted and hidden to prevent needle puncture. .

That is to say, based on the concept of continuous research and innovation of the product, the inventor based on many years of practical experience in product design and development, as well as active and concentrated research and development thinking, resulting in the invention through countless actual tests and experiments.

The purpose of the present invention is to provide a rotary retractable safety needle which can prevent the needle from being pulled out of the injection site without being rotated and retracted and hidden to completely cover the needle, avoid needle sticking, and improve safety.

To achieve the above object, the present invention includes a syringe, a rotary sleeve, and a jacket, wherein the syringe includes a syringe, a needle, and a needle core, and the surface of the syringe has at least one protrusion, and the needle is coupled to the syringe. On the side of the syringe, the needle core is sleeved into the syringe; the rotary sleeve is sleeved on the surface of the syringe, and the surface of the rotary sleeve has at least one arc-shaped hole, so that the protrusion of the syringe penetrates the arc-shaped hole; the jacket The rotating sleeve is sleeved, and a rotating structure is used for the rotating sleeve to rotate and not move. The outer surface of the outer sleeve has at least a perforation at all times, so that the protrusion of the syringe is guided to the straight perforation.

After using the syringe to complete the injection, hold the jacket in one hand, and at the same time, rotate the rotary sleeve with the other hand. The arc-shaped hole pushes the protrusion to move. The protrusion is restricted to move straight up through the straight perforation, driving the The syringe is moved upwards, the needle is pulled out of the injection site and retracted into the jacket without rotating, so as to completely cover the needle, avoiding the situation that the person is infected with various blood infectious diseases due to needlestick, and improving safety.

The following only uses specific embodiments and detailed descriptions with drawings to enable your review committee to further understand and understand the functions and features of the present invention.

Please refer to FIG. 1 to FIG. 3, the present invention includes a syringe 10, a rotary sleeve 20, and a casing 30. This is explained in detail below:

The syringe 10 includes a syringe 11, a needle 12, and a needle core 13. The surface of the syringe 11 has two protrusions 111. The needle 12 is coupled to one side of the syringe 11, and the needle core 13 is inserted into the syringe. 11.

The rotary sleeve 20 covers the surface of the syringe 11, and the surface of the rotary sleeve 20 has two arc-shaped holes 21, so that the protrusion 111 of the syringe 11 passes through the arc-shaped holes 21.

The outer sleeve 30 is sleeved with the rotary sleeve 20, and by a rotating structure, the rotary sleeve 20 can only be rotated and cannot be moved. The outer surface of the outer sleeve 30 has at least a perforation 31 at all times, so that the protrusion 111 of the syringe 11 is guided to slide. The straight perforation 31.

In a structural embodiment, the syringe 11 has a set of posts 112 at the injection end, the surface of the set of posts 112 has a taper, the needle 12 has a set of holes 121, the set of holes 121 has a taper, and the set of posts 112, It is used to produce an urgent fixing effect and also facilitates the replacement of the needle 12, which is not limited to a single function.

Please refer to FIG. 3. In a structural embodiment, one end of the rotary sleeve 20 has two flanges 22, which are used for abutting fingers to facilitate pressing the needle core 13 during injection.

In a structural embodiment, the rotating structure is such that the rotating sleeve 20 has a locking protrusion 23 on the outside, and the inner surface of the outer sleeve 30 has a locking groove 32, and the locking protrusion 23 and the locking groove 32 are clamped to each other for the rotating sleeve. 20 can only be rotated but not moved.

In a structural embodiment, the straight perforation 31 has two locking portions 33 near the closed end. When the protrusion 111 slides at the closed end of the straight perforation 31, it is locked by the locking portion 33 and cannot be positioned. Move around. After the needle 12 is retracted, it will not be extended.

The above is an introduction to the components of the present invention and their composition, and then the use embodiments, features, and benefits of the present invention are described as follows:

Please refer to FIG. 4, FIG. 5, FIG. 6, and FIG. 7. After the syringe 10 is used to complete the injection operation, the outer sleeve 30 is held and fixed by one hand, and the rotary sleeve 20 is rotated by the other hand. The hole 21 pushes the protrusion 111 to move, and the protrusion 111 is restricted to move straight up through the straight perforation 31, which drives the syringe 11 to move upward, and the needle 12 is pulled out of the injection site without shrinking, and retracted into the jacket 30 In order to completely cover the needle, avoid the situation that the person is infected with various blood infectious diseases due to needle stick, and improve safety.

The above-mentioned embodiments in this case are provided for convenience of explanation only. When the meaning of this case cannot be limited in this way, that is, all kinds of transformation designs based on the listed patent application scopes should be included in the patent scope of this case.

Syringe 10 Syringe 11 Projection 111 Sleeve 112 Needle 12 Sleeve 121 Needle core 13 Sleeve 20 Arc hole 21 Flange 22 Carding 23 Outer jacket 30 Straight perforation 31 Card slot 32 Locking portion 33

Figure 1 is a perspective view of the present invention. Figure 2 is an exploded perspective view of the present invention. Figure 3 is a cross-sectional view of an embodiment of the present invention for injection. Fig. 4 is a diagram showing an embodiment of the preparation operation before the rotation retraction operation of the present invention. FIG. 5 is a diagram of an embodiment of the present invention when performing a rotation retraction operation. Fig. 6 is a diagram of an embodiment of the present invention in which the needle is pulled out of the injection site without being rotated and retracted into the sheath to completely cover the needle. Figure 7 is a perspective view of the needle of the present invention retracted into the outer cover to completely cover the needle.

Claims (3)

A rotary retractable safety needle includes: a syringe including a syringe, a needle, and a needle core; the surface of the syringe has at least one protrusion; the needle is coupled to one side of the syringe; and the needle core sleeve Into the syringe; a rotary sleeve is sleeved on the surface of the syringe, the surface of the rotary sleeve has at least one arc-shaped hole, so that the protrusion of the syringe penetrates the arc-shaped hole; a jacket, sleeve the sleeve By using a rotating structure, the rotating sleeve can only be rotated and cannot be moved. The outer surface of the outer sleeve has at least a perforation at all times, so that the protrusion of the syringe is guided to the straight perforation. A card protrusion, the outer surface of the outer sleeve has a card slot, and the card protrusion and the card slot are sleeved with each other so that the rotary sleeve can only rotate and cannot move; wherein the straight perforation has two locking portions near the closed end. When the protrusion is guided at the closed end of the straight perforation, it is locked and positioned by the locking portion. The rotary retractable safety needle according to item 1 of the scope of patent application, wherein the syringe has a set of posts at the injection end, the set of posts has a taper on the surface, the needle has a set of holes, and the set of holes has a taper And set the column. The rotary retractable safety needle according to item 1 of the scope of the patent application, wherein one end of the rotary sleeve has two flanges, which are used for abutting fingers to facilitate the pressing of the needle core during injection.