JP2008082935A - Syringe protection holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for preventing operational failure due to the fixation of a syringe plunger in a microsyringe and preventing contaminations by volatile components in the environment in a gas-tight syringe. <P>SOLUTION: In the device, a syringe tube part can be connected to a sealed container which houses a cleaning solution, and the syringe plunger can be slid vertically within an allowable range and fixed. The syringe plunger and an inner wall of the syringe tube part can be cleaned and protected by passing a needle tip through a sealed member of the sealed container which houses the cleaning solution and drawing the cleaning solution by suction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a syringe protection holder that prevents solidification of a syringe plunger due to physical properties of contents, maintains the operation of the syringe plunger well, and further protects the inside of a syringe barrel from contamination of volatile components in the environment.

  In the conventional microsyringe, there is a device that can clean the syringe barrel inner wall and the plunger with the solvent after the automatic sampling. It is known that problems such as solidification and malfunction due to bending of the needle tip or forcible operation, that is, instability of the sampling amount, are likely to occur. Although Patent Document 1 seems to be effective at the time of repeated automatic measurement, there is a problem that it does not deal with defects at the time of storage.

  In addition, in the conventional gas tight syringe, various volatile component gases in the environment adhere to the inner wall of the syringe cylinder over time, and during analysis, these volatile components cause contamination, which is troublesome to remove. There was a problem of hanging.

Prior art documents are shown below.
JP-A 63-30761

  The present invention has been made in consideration of the above-mentioned problems. The syringe plunger is solidified and the syringe barrel is prevented from malfunctioning when stored in the syringe or left after the analysis is completed. An object of the present invention is to provide a syringe protection holder in order to prevent contamination by various volatile component gases and improve analysis accuracy.

The invention according to claim 1 fixes the syringe in a state where a needle hole portion of a syringe consisting of a syringe barrel, a syringe plunger, and a needle is immersed in a cleaning liquid in a container,
The cleaning liquid is sucked into the syringe barrel by slide adjustment of the syringe plunger,
The syringe protective holder is characterized in that the cleaning liquid is held in the syringe barrel by fixing the syringe plunger.
In this way, by holding the cleaning liquid in the syringe, it is possible to prevent the syringe plunger from being solidified by the contents and the volatile component gas from adhering to the inner wall of the syringe barrel.

The invention according to claim 2 is the syringe protection holder according to claim 1, wherein the container is sealed by a sealing member.
Thus, by providing the sealing member, evaporation of the cleaning liquid in the container can be minimized.

The invention according to claim 3 is the syringe protection holder according to claim 1 or 2, wherein the cleaning liquid is a mixture of one kind of organic solvent or two or more kinds of organic solvents.
In this way, by using a cleaning liquid in which one kind of organic solvent or two or more kinds of organic solvents are mixed, the selectivity of the cleaning liquid is increased, and an organic solvent that can easily hold a sample can be selected according to the physical properties of the sample. it can. Thereby, an excellent cleaning effect can be expected. Further, conventional cleaning liquids are difficult to handle at the time of disposal such as pH control depending on the type, but disposal such as disposal can be performed relatively easily by using the cleaning liquid as an organic solvent.

  By preventing solidification of the syringe plunger and contamination in the syringe cylinder, improvement in analysis accuracy can be expected.

  FIG. 1 is a structural diagram of a syringe, and the syringe barrel 2 is usually made of transparent hard glass, and a scale indicating the amount to be collected or injected is written on the outside, and the sample is collected by moving the syringe plunger 1 up and down. Or an injection is performed.

The syringe used in the present invention is made of glass and has a total length of 5 to 25 cm including the needle tip, and is generally called a microsyringe or gas tight syringe used for various analysis sampling. It is.
Further, the needle used in the present invention may be a vertical hole type needle having a needle hole at the tip of the needle, or a horizontal hole type needle having a needle hole in the side surface part of the needle.
The present invention is particularly effective when the syringe barrel has a volume of about 100 μl and the needle is thin and easily solidified, but is not limited thereto.

FIG. 2 is a schematic view of a sealed container containing a cleaning solution.
As the sealed container used in the present invention, a container having an internal volume of 1 to 20 ml, which is made of glass or highly transparent plastic and whose contents can be visually confirmed, is desirable.
The sealing member used in the present invention is preferably a septum that is not easily affected by deterioration such as erosion or cracking caused by Teflon (registered trademark) or silicon cleaning liquid, and the cleaning liquid is less likely to volatilize, but is not limited thereto. Absent.

  FIG. 3 shows an example of a syringe protection holder according to the present invention. A syringe as shown in FIG. 1 and a sealed container containing a cleaning liquid as shown in FIG. 2 can be connected and fixed, and the syringe is sucked into the syringe cylinder. It is an apparatus which can hold and hold a syringe plunger when the inside of the part is filled. FIG. 4 is a front plan view of the syringe protection holder base portion of the present invention shown in FIG. 3 as an example of a base that can be stably placed. FIG. 5 is a side plan view of the syringe protection holder base portion.

  The syringe plunger fixing portion 8 used in the present invention is a plastic or metal member having a structure for sandwiching the syringe plunger head, or a gear-type member, and is fixed by sliding the syringe plunger up and down. It is a member. Here, the raising height of the syringe plunger can be adjusted. In addition, it is desirable that the syringe plunger can be easily attached and detached.

  The drive method for sliding the syringe plunger is preferably a gear type, pulley type, screw type, or the like, but is not limited thereto.

  The support 9 for the syringe barrel and the support 10 for the sealed container used in the present invention are plastic or metal members having a structure that sandwiches the syringe barrel and the sealed container, and those that are easy to attach and detach are desirable. .

  The holder support column 7 used in the present invention is a support column made of plastic or metal capable of fixing the syringe barrel 2 and the sealed container 5 containing the cleaning liquid 6 as long as it has a structure that does not easily fall over.

  The cleaning liquid used in the present invention prevents the solidification of the syringe plunger and contamination in the syringe cylinder by filling the syringe cylinder. Alternatively, it is desirable to select two or more kinds and put the amount that the needle hole is immersed in the cleaning liquid into the sealed container even if it volatilizes through the sealing member.

  Below, the procedure from the assembly of the syringe protection holder of the present invention to the syringe storage method will be described in detail. First, a cleaning solution is put in a sealed container and sealed with a sealing member. Next, while immersing the needle tip through this sealing member, the syringe plunger is pulled up, the cleaning liquid is sucked into the syringe barrel as much as possible, and then discharged five times to complete the cleaning, and again, As much of the cleaning liquid as possible is sucked into the syringe barrel. While maintaining this state, it is preferable to fix and install the sealed container, the syringe barrel, and the syringe plunger in this order on each holder portion of the syringe protection holder.

<Example 1>
After sampling a high-concentration sample diluted with methanol using a 10 μl vertical-hole microsyringe, the syringe protective holder in the present invention (using chloroform as the cleaning liquid and sucking the cleaning liquid into the syringe barrel and discharging it) After repeating 5 times, the syringe plunger was fixed in a state where the cleaning liquid was sucked to above the 10 μl scale of the syringe barrel. Thereafter, when the operation of the microsyringe was checked, the syringe plunger was not solidified and the operation was good.

<Comparative Example 1>
After sampling a high-concentration sample diluted with methanol using a 10 μl vertical hole microsyringe, the operation of sucking and discharging chloroform into the syringe barrel was repeated five times, and then the syringe plunger was pushed down. It was left indoors for 10 days. Thereafter, when the operation of the microsyringe was checked, the syringe plunger was solidified, resulting in an operation failure.

  The present invention can provide a protective device that can prevent contamination of various volatile components in the environment without solidifying the syringe plunger when there is an opportunity to store and reuse the syringe. is there.

It is a block diagram of a syringe. It is a block diagram of the sealed container containing the washing | cleaning liquid. It is the top view seen from the front of the holder of this invention. It is a front top view when a syringe, a sealed container, and a holder are connected. It is a side surface top view when a syringe, a sealed container, and a holder are connected.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Syringe plunger 2 Syringe cylinder part 3 Needle tip 4 Sealing member 5 Sealing container 6 Cleaning liquid 7 Holder support | pillar 8 Plunger fixing | fixed part 9 Support body of a syringe cylinder part 10 Support body of a sealing container

Claims (3)

The syringe is fixed in a state where the needle hole portion of the syringe consisting of the syringe barrel, syringe plunger, and needle is immersed in the cleaning liquid in the container,
The cleaning liquid is sucked into the syringe barrel by slide adjustment of the syringe plunger,
A syringe protection holder, wherein the cleaning liquid is held in the syringe barrel by fixing the syringe plunger.   The syringe protective holder according to claim 1, wherein the container is sealed by a sealing member.   The syringe protective holder according to claim 1 or 2, wherein the cleaning liquid is a mixture of one organic solvent or two or more organic solvents.

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