JP2008212439A - Medical blood collecting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dispenser capable of safely and quickly dispensing blood from a syringe which collects the blood from a person with narrow vein by a narrow injection needle using a regular syringe, into a vacuum blood collection tube (spitz) in a holder. <P>SOLUTION: A syringe 1 formed by separating the narrow injection needle 11 drawing 16 the blood from the vein 15 with a relatively small internal diameter, is formed by communicating and connecting an elastic suction port 3 detachably fitted to a nozzle 2 of the syringe 1 to a nozzle 8 of a luer adapter 7 with a narrow flexible catheter 10. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a medical instrument that dispenses a vein having a relatively small diameter into a reduced-pressure blood collection tube (Spitsu).

  In general, a blood collection needle is attached to a blood collection tube holder, a blood collection needle is inserted into a vein, a vacuum blood collection tube (Spies) is inserted into the holder, and the insertion needle in the holder is inserted into a vacuum blood collection tube from a rubber stopper. The tube was inserted, and dispensed directly from the vein by decompression (negative pressure) in the blood collection tube (for example, Patent Documents 1 and 2).

  In some cases, patients with very thin blood vessels, infants, or when the venous pressure is low or the blood volume is low, it is difficult to collect the vacuum tube (for example, Patent Documents 1 and 2).

  However, when the risk of complications due to vacuum tube blood collection is high, blood collection using a syringe and a conventional injection needle is performed.

  In blood collection using a syringe and a conventional injection needle, the injection needle is inserted into a vacuum blood collection tube or negative pressure test tube (spits) from a rubber stopper, and blood collection (specimen) in the syringe is dispensed directly into the spine by decompression. did.

  In such a blood collection procedure, there is a risk that the needle or needle of the syringe held in the right hand is once exposed to the outside of the body, and the procedure or operation for inserting the needle into the spine is performed, and a needle stick accident is likely to occur. Depending on the negative pressure (negative pressure) and the inner diameter of the needle (22 gauge or less), there was a problem that red blood cells in blood were broken and hemolyzed, making it difficult to use for specimens (test blood).

  In addition, there is a bidirectional catheter device in which tapered nozzles are formed at both ends of a catheter, a suction port is provided at one end, and a discharge port is provided at the other end in a detachable manner (Patent Document 3).

  However, the suction port and the discharge port coupler have a taper that expands the inner surface toward the opening end, and are easily separated from the taper nozzle of the catheter or syringe.

JP-A-9-56700 JP 2003-325486 A JP-A-9-164207

  It is an object of the present invention to obtain a dispensing device for safely and quickly dispensing into a reduced-pressure blood collection tube (spies) in a holder from a syringe collected from a person with thin veins using a normal syringe with a thin needle. Is.

In order to achieve the above object, the present invention
First, in a syringe obtained by separating a thin injection needle collected from a vein having a relatively small inner diameter, an elastic suction port detachably fitted to the nozzle of the syringe and a nozzle of the luer adapter are communicated with each other by a thin flexible catheter. Medical blood collection device,
Secondly, the medical blood collecting instrument according to the first invention, wherein the nozzle of the luer adapter is connected to the discharge port provided in one body with the catheter.
Thirdly, the medical blood collecting instrument according to the first invention, wherein the nozzle of the luer adapter is detachably fitted with the catheter and the elastic outlet provided in one body,
Fourth, the medical blood collection instrument according to any one of the first to third inventions, wherein the luer adapter is attached to a blood collection tube holder,
Consists of.

Therefore, after inserting a thin needle into the vein and collecting the necessary amount of blood in the syringe of the syringe by sliding the piston slowly outwards with the touch of the hand, the needle is withdrawn from the vein.
After pulling out, after disinfecting and bleeding the extracted part of the skin, immediately dispose of the thin injection needle fitted to the nozzle of the syringe in the infectious disease medical waste container,
In this state, the suction port of the catheter is quickly fitted and attached to the nozzle.

  When a negative pressure blood collection tube (spies) is inserted into the holder from the other end of the holder, a puncture needle is inserted into the blood collection tube through the rubber stopper of the blood collection tube, and negative pressure or negative pressure of the blood collection tube Thus, blood (specimen) in the syringe automatically flows into the blood collection tube, and this can be repeated to dispense the blood into a plurality of blood collection tubes.

Since the present invention is configured as described above, blood can be collected manually and safely from a patient with thin veins with an ordinary syringe, and then the injection needle can be separated and discarded from the nozzle of the syringe.
Immediately after that, there is an effect that blood in the syringe can be quickly and securely dispensed into a spine.

  In addition, the suction port has an elastic arm, there is no risk of turning around the center line, and the fitting operation to the nozzle can be performed quickly and simply, and the suction port is closed with an opening / closing stopper. The inside of the empty catheter can be kept clean.

  As shown in FIG. 5 (a), the ordinary (conventional) syringe 1 has a truncated cone-shaped nozzle 2 (tapered nozzle having a thin outer surface toward the tip) at the tip of the syringe 1 ′. The base 11 'of the injection needle 11 is fitted,

  As shown in FIG. 5 (b), the nozzle 2 is used by fitting the base portion 11 ′ of the winged needle 11 to the nozzle 2.

  In the present invention, as shown in FIG. 1, a base 6 is screwed into a synthetic resin cylindrical elastic suction port 3 detachably fitted to the nozzle 2 and a tip tube port 5 of a normal (conventional) blood collection tube holder 4. A synthetic resin cylindrical female discharge port 9 detachably fitted to the truncated cone-shaped nozzle 8 of the luer adapter 7 is made of a synthetic resin thin (outside diameter: about 2 mm, inside diameter: about 1 mm) flexible catheter. 10 is connected to one body.

  The luer adapter 7 has a frustoconical nozzle 8 (a thin outer surface toward the tip) at one end of the synthetic resin hollow cylindrical base 6 shown in FIGS. 6 (a) and 7 (b). And a female helix 6 formed on the inner periphery of the tube port 5 of the holder 4 as shown in FIGS. 1 and 3. ”And a male helix 6 ′ formed on the outer periphery of the base portion 6 are screwed together, and the base portion 6 is screwed into the tube port 5.

  As shown in FIGS. 7 (a) and 7 (b), an engaging groove 6a is formed instead of the spiral 6 ', and the groove 6a is provided at the inlet 5' of the holder 4 via the ridges 6b and 6b. 6c can be engaged between 6c.

  At least the suction port 3 is provided with an elastic arm 13 orthogonal to the center line c to prevent the catheter 10 from rotating around the center line c due to torsion or the like, and to prevent detachment in the fitting operation with the nozzles 2 and 8. And the stopper 16 of the suction port 3 or the discharge port 9 is provided.

  The nozzle 8 of the luer adapter 7 and the elastic outlet 9 provided in the catheter 10 shown in FIGS. 6 (a) and 6 (b) and 7 (b) and 7 (b) are connected to one body or both. 8, 9 can be a single synthetic resin-made elastic nozzle (FIGS. 1A and 1B).

  The puncture needle 12 of the luer adapter 7 is covered with a thin rubber or a synthetic resin 12 ′, and the wrapping 12 ′ is broken when inserted into the rubber stopper 14 ′ of the vacuum blood collection tube (spies) 14 inserted into the holder 4. Compressed.

Accordingly, the thin injection needle 11 shown in FIGS. 5 (a) and 5 (b) is inserted into the vein 15, and the piston 1 "of the syringe 1 is slowly slid outwardly based on the hand feeling. After collecting a necessary amount of the specimen 16 (blood), the thin injection needle 11 is withdrawn from the vein 15 and after disinfection and hemostasis of the extracted portion skin, the thin injection needle 11 is promptly discarded in the container.
The suction port 3 is quickly fitted and attached to the nozzle 2 with the other hand without causing blood leakage from the exposed nozzle 2 in that state.

  The discharge port 9 connected to the other end of the catheter 10 is the wharf of the luer adapter 7 in which the base 6 is engaged with the distal end tube port 5 of the holder 4 by screwing 6 ′, 6 ″ or the groove 6a. The syringe 9 is fitted in advance to the conical nozzle 8 or the discharge port 9 and the nozzle 8 are one body (FIGS. 2 (A) and 2 (B)). The specimen 17 (blood) in 1 can be dispensed into the spits 14.

  In the present invention, blood in a vein 15 that is thinner than normal, such as a child or the like, is collected with a syringe as described above, and can be dispensed safely and quickly into a spine.

(A) The figure is a partially cutaway side view showing the blood collection device of the present invention, and (b) is a partially cutaway side view of the luer adapter part of the blood collection device. It is a partial vertical side view of the blood collection instrument of the present invention. It is a side view of the instrument for blood collection of this invention. (A) and (B) are side views of the other side of the conventional blood sampling device. (A) (b) is a partially cutaway side view of a conventional syringe. (A) is a partially cutaway side view of a conventional luer adapter, and (B) is a perspective view thereof. (A) is a partially cutaway side view of a conventional luer adapter, and (B) is a perspective view thereof.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Syringe 1 'Syringe 1 "Piston 2 Nozzle 3 Suction port 4 Blood-collecting-tube holder 5 Tip tube port 6 Base 7 Luer adapter 8 Luer adapter nozzle 9 Outlet

Claims (4)

In a syringe formed by separating a thin needle collected from a vein with a relatively small inner diameter,
An elastic suction port detachably fitted to the nozzle of the syringe;
With the nozzle of the lure adapter
A blood sampling device for medical use that is connected by a thin flexible catheter.   The medical blood collection device according to claim 1, wherein the catheter and the discharge port provided in one body are connected to the nozzle of the luer adapter in one body.   The medical blood collection device according to claim 1, wherein the catheter and the elastic outlet provided in one body are detachably fitted to the nozzle of the luer adapter.   The medical blood collection instrument according to any one of claims 1 to 3, wherein the lure adapter is attached to a blood collection tube holder.

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