CN104117111A - Puncture-proof scalp needle - Google Patents

Abstract

The anti-stab scalp needle includes a needle holder, a needle head is fixed on the head of the needle holder, a needle wing is arranged on the needle holder, an injection hose is fixed on the rear end of the needle holder, and a hollow protective sleeve is covered on the needle holder. The middle section of the protective cover is provided with a slot for allowing the needle wings to pass through. Injection and puncture protection are achieved with a simple push and pull. It is easy to use, and because the protective cover is slotted in the middle, and the two ends of the slot are closed, the protective cover will not be pushed out or pulled away from the needle seat, making the anti-stab effect very good. The structure is simple, easy to manufacture and install, and can be manufactured and installed in large quantities, which is beneficial to popularization and popularization in major hospitals and various clinics.

Description

Anti-stab scalp needle

technical field

The invention relates to a scalp needle, in particular to an anti-stab scalp needle.

Background technique

Needlestick injuries can cause blood and body fluid-borne diseases such as hepatitis B, hepatitis C, and AIDS. According to statistics, 70-83% of needlestick injuries are caused by scalp needles. At present, a large number of scalp needles used in China are simply covered with a protective cover on the metal needle body. When puncturing, the protective cover is removed. After the injection, the protective cover is no longer put back on the needle body. They are all exposed, and the function of this protective cover is to protect the metal needle body against bacteria when it is not in use, not to prevent stabbing. So exposed needle shafts cause a lot of needlestick injuries. It poses a huge threat to the personal safety of medical staff.

The patent No. is 201120033848.6, and the Chinese patent titled the anti-stab scalp needle discloses a slotted needle cap for the purpose of anti-stab to prevent stab wounds. However, during the use of this kind of slotted needle cap, when the needle cap is pushed back after puncturing, it is often easy to cause the needle cap to be pushed out of the scalp and cause the metal needle to be exposed when the force is too large. stabbed. Moreover, the structure of the slotted needle cap described in it is too complicated, and a hook needs to be provided at the rear end of the slot, which increases the manufacturing cost of the slotted needle cap and makes it difficult to install, so that it is not widely used in actual use.

Contents of the invention

In order to solve the problem that the prior art cannot effectively prevent needle stick injuries, the present invention provides an anti-stab scalp needle, which has a simple structure and good anti-stab performance.

To achieve the above object, the present invention adopts the following technical solutions:

The anti-stab scalp needle includes a needle holder, a needle head is fixed on the head of the needle holder, a needle wing is arranged on the needle holder, an injection hose is fixed on the rear end of the needle holder, and a hollow protective sleeve is covered on the needle holder. The middle section of the protective cover is provided with a slot for allowing the needle wings to pass through.

For the aforementioned scalp needle, the place where the injection hose is fixed at the rear end of the needle holder is smaller than the front and rear sections of the needle holder. Flush or slightly smaller; when the protective cover slides through the slot and slides over the needle wing to the bottom to expose the working state of the needle, the front end of the inner hole of the protective cover interferes with the front section of the needle hub; when the protective cover slides through the slot When the needle wing is retracted to the front end to store the needle in the protective sleeve, the rear end of the hole of the protective sleeve is in interference fit with the rear section of the needle holder.

In the aforementioned scalp needle, the protective sheath is made of elastic material, and the slot is in a tightly closed state when it is not in contact with the needle wings.

A simple slotted protective cover, when not in use, the rear end of the protective cover is in interference fit with the rear end of the needle hub, and the protective cover has the function of preventing bacteria.

Hold the needle wing on the needle seat with one hand, and pull the protective cover towards the end of the injection hose with the other hand. Due to the cooperation between the slot and the needle wing, the protective cover can only move in the front and rear directions without rotation. It is in the middle of the protective sleeve, so when you pull it backward, it will stop because the slot is blocked by the needle wing; at the same time, the front end of the inner hole of the protective sleeve is in interference fit with the front section of the needle seat, and the protective cover is fixed on the needle seat. At this time, the needle Fully exposed for injection work.

After the injection is completed, pinch the needle wing and push the protective cover towards the needle. The protective cover can only move forward and backward due to the cooperation between the card slot and the needle wing. Since the slot is in the middle of the protective cover, pushing it forward will cause The slotting is stopped by the needle wings; when pushed to the end, the rear end of the inner hole of the protective cover is in interference fit with the rear section of the needle seat, and the protective cover is fixed on the needle seat, so that the needle is stored in the protective cover, as if it is not in use state.

Injection and puncture protection are achieved with a simple push and pull. It is easy to use, and because the protective cover is slotted in the middle, and the two ends of the slot are closed, the protective cover will not be pushed out or pulled away from the needle seat, making the anti-stab effect very good.

This simple safety protective cover with a slot in the middle is easy to manufacture and install, can be manufactured and installed in large quantities, and is conducive to popularization and popularization in major hospitals and various clinics.

Description of drawings

Figure 1 is a schematic diagram of the three-dimensional structure of the anti-stab scalp needle of the present invention.

Figure 2 is a schematic diagram of the structure of the anti-stab scalp needle holder of the present invention.

Fig. 3 is a schematic diagram of the protected state structure of the anti-stab scalp needle of the present invention with the needle head stored.

Fig. 4 is a schematic diagram of the structure of the anti-stab scalp needle protective cover of the present invention when it is retracted to the bottom to expose the needle.

Fig. 5 is a structural schematic diagram of the eccentric needle wing of the anti-stab scalp needle of the present invention.

Figure 6 is a schematic structural view of Embodiment 2 of the anti-stab scalp needle of the present invention.

Marked in the figure: 1 protective cover, 2 slot of the protective cover, 22 elastic closed slot of the protective cover, 3 needle wing, 4 injection hose, 5 needle seat, 51 needle seat to fix the injection hose, The rear section of the 52-pin seat, the front section of the 53-pin seat, and 6 needles.

Detailed ways

Embodiment one

Referring to the accompanying drawings, the anti-stab scalp needle includes a needle holder, a needle head is fixed on the head of the needle holder, a needle wing is arranged on the needle holder, an injection hose is fixed on the rear end of the needle holder, and a hollow needle is covered on the needle holder. The protective cover has a slot in the middle section that allows the needle wing to pass through.

The place where the injection hose is fixed at the rear end of the needle holder is smaller than the front and rear sections of the needle holder. When the bottom end is exposed to the working state of the needle, the front end of the inner hole of the protective sleeve is in interference fit with the front section of the needle holder; Interference fit with the rear section of the hub.

Among them, the front section and the back section of the needle seat are distinguished according to the position of the needle wing. On the side of the needle, the section of the needle seat before the needle wing is called the front section of the needle seat; on the side of the injection tube, the section of the needle seat behind the needle wing is called the rear section of the needle seat. Usually the outer diameter of the front section of the needle hub is the same as that of the rear section.

The actual function of the needle wing is to keep the needle head from moving after it enters the human body. The protruding member of the needle wing is used to fix the tape. on the human body. When the scalp needle is used on the infusion bag, the tape is wrapped around the needle wing and the infusion bag to fix the scalp needle and prevent the scalp needle from falling off. Because the scalp needle is a general medical device, it is used for injection and infusion bags of the human body.

Usually, the needle wing is designed to be vertically parallel to the outer circle of the needle seat on one side, and the needle wing is placed on this side to lean against the human skin, so that the scalp needle is flat against the human skin, so that when the tape is pasted, press the needle wing That is to protect the close contact between the needle wing and the human skin, so that the scalp needle will not slide, causing changes in the needle position inserted into the human body, which is conducive to the fixation of the scalp needle and human skin.

The protective sheath of the present invention has an eccentric groove in its middle section, which corresponds to the eccentric structure of the scalp needle wings.

Embodiment two

The difference between this embodiment and the first embodiment is that in this embodiment, the protective cover is made of elastic material, and the slot 22 of the protective cover is in a tightly closed state when it is not in contact with the needle wings. When the protective cover is pushed to slide over the needle wings, the slots are stretched by the needle wings and are close to both sides of the needle wings. At this time, the slots that are not in contact with the needle wings and leave the needle wings are tightly closed.

The elastic material is used to make the slot tightly closed, and when the scalp needle is not in use, it can ensure that the foreign liquid will not directly pollute the metal needle.

Of course, generally speaking, scalp needles are sealed in sterile bags when not in use. Only when in use, the sterile sealed bag will be torn to take out the scalp needles for use. The elastic slotted structure is just an extra layer of security. . Because the scalp needle is cheap, if the scalp needle is contaminated by blood or liquid medicine, medical staff usually choose to use a new scalp needle.

Claims (3)

1. puncture-proof scalp acupuncture, comprises needle stand, at needle stand head, is fixed with syringe needle, is provided with the pin wing on needle stand, in needle stand rear end, is fixed with injection flexible pipe, it is characterized in that:

On needle stand, cover has the protective sleeve of hollow, and the stage casing of protective sleeve offers the fluting that allows the pin wing to pass.

2. scalp acupuncture as claimed in claim 1, is characterized in that fixedly injection hose is little compared with the leading portion of needle stand, back segment in needle stand rear end, and injection flexible pipe is fixed on needle stand, and injection flexible pipe periphery flushes with leading portion, the back segment external diameter of needle stand or be smaller; When protective sleeve is slipped over the pin wing and is fallen back on bottom and expose the duty of syringe needle by fluting, the leading portion interference fit of the front end of described protective sleeve endoporus and needle stand; When protective sleeve is slipped over the pin wing and is fallen back on front end syringe needle is closed in protective sleeve by fluting, the back segment interference fit of the rear end in the hole of described protective sleeve and needle stand.

3. scalp acupuncture as claimed in claim 1 or 2, is characterized in that described protective sleeve is elastomeric material, is recessed at while not contacting with the pin wing as closing state.