TWI742736B - Pre-loaded medicament mixing needle with diluted solution - Google Patents

Abstract

A medicament mixing needle preloaded with a diluted solution, comprising a needle cylinder and a needle core, the needle cylinder is filled with medicine in the chamber, the needle core can be movably sleeved in the needle cylinder, and the needle core contains the diluent The valve rod has a through hole, the needle chamber is provided with a valve stem, the valve stem is movable and the rear end penetrates the needle core, and the valve stem is used to control the front end of the valve stem to block or escape from the through hole. In the present invention, the medicine and the diluent are pre-packaged in a needle. The user can control the diluent to be automatically injected into the syringe chamber and mix with the medicine by operating the valve stem and the needle core. Steps such as medicine, mixing and injection, reduce the risk of people being infected with various blood-borne infectious diseases due to needlestick, and enable operators to obtain a faster and safer environment in use; it can also reduce medical waste And improve the efficiency of needle application.

Description

Pre-loaded medicament mixing needle with diluted solution

The present invention relates to a needle, in particular to a medicament mixed needle with a preloaded diluted solution that provides simple, economical, and anti-needle functions.

The reason and process of the inventive idea:

In clinical practice, nurses often use needles to extract drugs from Ampule and Vial, and during this process, they will expose themselves to the dangerous state of needle sticks.

Because most of the Vial medicines are powder-type medicines, the diluent needs to be drawn first, and the Vial mixture is injected before being used. The probability is more than the medicine preparation time and the probability of needle sticks after the Ampule liquid medicine is directly drawn. According to statistics from many hospitals in Taiwan, nursing staff are usually the subjects of acupuncture incidents in recent years. The time of acupuncture occurrence is the most common during preparation, during administration, and after administration.

After acupuncture, it will cause the chance of contracting infectious diseases, increase psychological shock and pressure, and cause a waste of medical resources. In view of this, the inventors of the present invention have led to the development of a "pre-loaded medicament mixed needle with a diluted solution", which can avoid needle sticks at all stages of providing injection medicine.

The following explains the steps when using general needles (IV injection):

1. After removing the protective cap on the needle, it will be the first chance of needle stick when drawing N/S or diluent;

2. Inject N/S or diluent into Vial to mix the medicine, it is the second chance of needle stick;

3. Withdrawing medicine from Vial is the third opportunity for acupuncture;

4. If the drug is provided through the muscle, subcutaneous, or intradermal method instead of through the intravenous dosing valve, when the needle is pulled out of the tissue layer and thrown into the infection recovery bucket, the needle cover must be covered first, which is the fourth Acupuncture opportunities;

5. Classify the used vial, and remove the iron piece from the bottle mouth, there is a risk of cuts to the human body.

Therefore, there will be as many as four times of needle sticks when using general needles, and the diseases that may be infected after needle sticks include hepatitis B, hepatitis C, HIV, herpes, malaria, tuberculosis, etc.

However, Canada, the United Kingdom, the European Union, Japan, Taiwan and other countries have put forward research results related to needle stick prevention, and emphasized the importance of safe needles. It can also be known that needle stick prevention is a global issue. Global market.

Therefore, if we can provide a simple, economical, needle-stick-proof needle with a compound function of carrying drugs and diluents, it will not only meet the needs of the global medical materials and clinical markets, but also contribute to the depletion of the earth and medical resources. Endless meaning.

The idea is that the inventor of the present invention is based on the concept of continuous product research and innovation, based on years of practical experience in product design and development, as well as active research and development thinking, through countless actual tests and experiments, leading to the invention of this invention.

The purpose of the present invention is to provide a simple, economical, anti-needle and other compound function of pre-loaded dilute solution medicament mixing needle.

To achieve the above-mentioned purpose, the present invention includes a needle cylinder and a needle core, wherein the needle cylinder is filled with medicine in the chamber; the needle core is movably sleeved in the needle cylinder, and the needle core has a needle core cavity The needle chamber contains the diluent and has a through hole that communicates with the needle chamber, and the needle chamber is provided with a valve stem, the valve stem is movable and the rear end shows Outside the needle core, the valve stem is used to control the front end of the valve stem to block or escape from the through hole.

In the present invention, the medicine and the diluent are pre-packaged in a needle. The user can control the diluent to be automatically injected into the syringe chamber and mix with the medicine by operating the valve stem and the needle core. The steps of medicine, mixing, and injection reduce the risk of people being infected with various blood-borne infectious diseases due to needlestick, and enable the operator to obtain a faster and safer environment in use.

The invention can also reduce the amount of medical waste and improve the efficiency of needle application.

The following only uses specific embodiments and drawings for detailed description.

Please refer to FIGS. 1 to 4, the present invention includes a needle cylinder 10 and a needle core 20. It will be explained in detail below:

The syringe 10 contains a medicine 11, such as powder medicine, in the cavity.

The needle core 20 can be movably sleeved in the syringe 10, and the needle core 20 has a needle heart chamber 21 containing a diluent 22 and a through hole 23, the through hole 23 Connected with the chamber of the needle cylinder 10, the needle chamber 21 is provided with a valve stem 30, the valve stem 30 is movable and the rear end penetrates the needle core 20, the valve stem 30 is used to control the valve stem The front end 31 is blocked or separated from the through hole 23.

In an embodiment, the syringe 10 is made of a transparent material and has a scale 12 for observing the drug volume of the syringe 10.

In a structural embodiment, the syringe 10 has a front end 13 of the syringe for socketing a needle 40, or directly plugging into the dosing valve 50 (see Figure 17) for intravenous dosing .

In a structural embodiment, there is a valve plate 14 in the syringe 10 near the front end 13 of the syringe. The valve plate 14 is selected from an elastic material such as silicone and is provided with a valve port 141. When the needle core 20 is injected When the liquid medicine in the syringe 10 is squeezed (as shown in Figures 11 and 17), the valve port 141 is deformed and opened by the pressure of the liquid medicine, and the liquid medicine can be injected from the front end 13 of the syringe .

In a structural embodiment, the needle core 20 has a flange 24 on its outer surface, which is used as an auxiliary hand when the valve stem 30 is pulled and pressed by the hand.力Support part.

In a structural embodiment, the needle core 20 has several bodies 25 on its outer surface to form a guide rail when the needle core 20 is pulled and injected, and to reduce the contact resistance between the needle cylinder 10 and the needle core 20 In order to facilitate the movement of the needle core 20.

In a structural embodiment, the through hole 23 is provided with a sealing member 26, which is selected from an elastic material such as silicon rubber, and is used for close contact with the front end 31 of the valve stem for sealing and preventing leakage.

In a structural embodiment, the rear end of the valve stem 30 has a control portion 32 whose outer diameter is larger than that of the body of the valve stem 30. The outer surface of the control portion 32 is sheathed with a sealing ring 33 for contacting the inner wall of the needle chamber 21 The valve stem 30 can be positioned in close contact with the function of sealing and preventing leakage.

The foregoing is an introduction to the various components of the present invention and their composition methods, and then the use embodiments, features, and benefits of the present invention are introduced as follows:

Please refer to Figure 4 to first explain the product manufacturing process of the medicine mixing needle preloaded with dilute solution of the present invention before leaving the factory:

The medicine 11 to be mixed is placed in the syringe 10 in the form of powder, and the diluent 22 is placed in the needle chamber 21, and after the whole is sterilized, it is shipped in aseptic packaging.

Please refer to Fig. 5, when using the medicament mixing needle preloaded with the diluted solution of the present invention, the aseptic package (not shown in the figure) is first opened, and the valve stem 30 is moved upward by pulling the control part 32, even if The front end 31 of the valve stem is separated from the through hole 23 of the needle core 20, so that the through hole 23 is open.

Please refer to Figures 6 and 7, when the user pulls the needle core 20 backwards, there is a gap between the outer surface of the control portion 32 and the inner wall of the needle chamber 21, resulting in a convective effect of internal and external air. The diluent 22 in the chamber 21 will be smoothly and automatically injected into the chamber of the syringe 10 due to the principle of negative pressure.

Please refer to Figure 8, when the diluent 22 in the needle chamber 21 is completely injected into the chamber of the syringe 10, the user can press the control part 32 to return it to the needle chamber 21 The walls are in close contact, and the valve stem 30 can be moved downward, even if the front end 31 of the valve stem can return to block the through hole 23 of the needle core 20.

Please refer to Figs. 9 and 10, the user can gently shake the medicament mixing needle preloaded with the diluted solution of the present invention to mix the medicine 11 and the diluent 22 in the chamber of the syringe 10.

Please refer to Figure 11, the user can press the control part 32 to move the needle core 20 downward to perform an injection action, and the valve port 141 is deformed and opened by the pressure of the liquid medicine in the syringe 10 to open it. Complete the needle application.

Please refer to Figures 12, 13, and 14, in a structural embodiment, the rear end surface of the needle core 20 is provided with a number of L-shaped grooves 27, and the control portion 32 is provided with a number of positioning blocks 34 on the outer surface to enable the positioning The block 34 can be guided and slid in the L-shaped groove 27.

When the positioning block 34 is located at the horizontal part of the L-shaped groove 27, the control part 32 is fixed to prevent the valve stem 30 from moving up and down arbitrarily, that is, the front end 31 of the valve stem keeps tightly blocking the through hole 23 of the needle core 20.

Please refer to Figure 15 and Figure 16, the user can first rotate the control part 32 to make the positioning block 34 located in the vertical part of the L-shaped groove 27, and then pull the control part 32 to move the valve stem 30 upwards Even if the front end 31 of the valve stem is separated from the through hole 23 of the needle core 20, the through hole 23 is opened to facilitate the subsequent automatic injection of the diluent 22 in the needle chamber 21 into the chamber of the needle cylinder 10.

Based on the above, there are as many as four needle sticking opportunities when using general needles in the prior art. In the present invention, the medicine 11 and the diluent 22 are pre-packaged in a needle, and the user can use By operating the valve stem 30 and the needle core 20 to control the automatic injection of the diluent 22 into the chamber of the syringe 10 to mix with the medicine 11, the steps of drawing, mixing and injecting the medicine can be completed with only one needle, which reduces the need for needle sticking ( Needlestick) leads to the possibility of people being infected with various blood-borne infectious diseases, and the use of it can enable operators to obtain a faster and safer environment, as well as reduce medical costs and waste of the earth; including reducing the cost of manufacturing and purchasing of vials, needles Resources to fix medical costs.

The invention can also reduce the amount of medical waste and improve the efficiency of needle application.

The above examples of this case are provided for the convenience of explanation only, and should not be used to limit the meaning of this case, that is, all the various design changes made in accordance with the scope of the listed patent applications should be included in the scope of patents of this case.

10: Syringe

11: Drugs

12: scale

13: The front end of the syringe

14: Valve piece

141: Valve port

20: Needle Heart

21: Needle Heart Chamber

22: diluent

23: Through hole

24: flange

25: strip body

26: Seal

27: L-shaped groove

30: Stem

31: The front end of the stem

32: Control Department

33: Sealing ring

34: positioning block

40: Needle

50: Dosing valve

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 three-dimensional exploded view of the needle core and valve stem of the present invention. Figure 4 is a cross-sectional view of the present invention. Figures 5 to 11 are diagrams of examples of use of the present invention. Figure 12 is an exploded perspective view of another structure of the needle core and valve stem of the present invention. Figure 13 is a perspective view of another structure of the needle core and valve stem of the present invention. Figure 14 is a cross-sectional view of another structure of the needle core and valve stem of the present invention. Figures 15 and 16 are diagrams of examples of using another structure of the needle core and valve stem of the present invention. Figure 17 is a diagram of an example of use of the present invention where the front end of the syringe is inserted into the dosing valve.

10: Syringe

11: Drugs

13: The front end of the syringe

14: Valve piece

20: Needle Heart

22: diluent

24: flange

25: strip body

26: Seal

30: Stem

32: Control Department

33: Sealing ring

40: Needle

Claims (5)

A medicament mixing needle preloaded with a dilute solution, comprising: a needle cylinder containing medicine in the cavity; a needle core that can be movably sleeved in the needle cylinder, the needle core has a needle heart chamber, and the needle The heart chamber contains the diluent and has a through hole, the through hole communicates with the needle chamber, and the needle chamber is provided with a valve stem, the valve stem is movable and the rear end penetrates the needle core In addition, the valve stem is used to control the front end of the valve stem to block or detach from the through hole; wherein the needle core has several bodies on the outside; wherein, the through hole is provided with a sealing element, which is selected from elastic materials for The front end of the valve stem is in close contact to have a sealing and anti-leakage effect; wherein the rear end of the valve stem has a control part whose outer diameter is larger than that of the valve stem body. The interior wall is in close contact, has a sealing and leak-proof effect and can position the valve stem; wherein, the valve stem is moved upward by pulling the control part, so that the front end of the valve stem is separated from the through hole of the needle core, so that the through hole is open, and Make the sealing ring fail to come into close contact with the inner wall of the needle heart chamber, and then pull the needle core backwards. There is a gap between the outer surface of the control part and the inner wall of the needle heart chamber to produce internal and external air convection. Due to the principle of negative pressure, the diluent is automatically injected into the syringe chamber and mixed with the drug; when the diluent in the needle heart chamber is injected into the syringe chamber, the sealing ring is restored to the needle by depressing the control part. The inner wall of the heart chamber is in close contact, and the valve stem can be moved downward, so that the front end of the valve stem returns to the through hole that blocks the needle core. The medicament mixing needle preloaded with a diluted solution according to claim 1, wherein the needle barrel is made of transparent material and has graduations. The medicament mixing needle preloaded with a dilute solution according to claim 1, wherein the needle barrel has a front end of the needle barrel for socketing a needle, or directly plugging into the dosing valve for intravenous dosing . The medicament mixing needle preloaded with a diluted solution according to claim 3, wherein a valve disc is arranged in the needle cylinder near the front end of the needle cylinder, and the valve disc is selected from elastic materials and is provided with a valve port, when When the needle core performs an injection action to squeeze the liquid medicine in the syringe, the valve port is deformed and opened by the pressure of the liquid medicine. The medicament mixing needle preloaded with a diluted solution according to claim 1, wherein the needle core has a flange on the outer surface.

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