JP2000042105A - Winged needle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winged needle that can avoid erroneous piercing. SOLUTION: This winged needle is provided with a needle tube 1 with its rear end insert-fitted to a tube 2, and a storage cylinder 3 having a pair of flexible wings 4, 4 and storing the needle tube 1. A knurled part 5 is provided at the tip part of the tube 2, and this tip part is fitted into the storage cylinder 3 to fix the needle tube 1 to the storage cylinder 3 in the state of being protruded from the tip of the storage cylinder 3. The tube 2 is pulled hard backward to be moved backward while being slided along the inner peripheral wall of the storage cylinder 3, thus releasing the needle tube 1 from the fixed state to be enclosable in the storage cylinder 3. The side wall rear end of the storage cylinder 3 is axially slit to provide a slit 8, and when the needle tube 1 is enclosed in the storage cylinder 3, the tube 2 is inserted in the slit 8 to be fixable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winged needle used for medical procedures such as blood collection.

[0002]

2. Description of the Related Art Conventionally, a winged needle including a needle tube, a base into which the rear end of the needle tube is inserted, and a pair of flexible wings formed integrally with the base is used for medical treatment such as blood collection. Used in acts.
The medical practitioner clamps both wings in a palm-sliding state and punctures the needle tube into the patient's blood vessel, and then spreads both wings and affixes the needle tube to the patient's skin with adhesive tape to fix the needle tube. The rear end of the needle tube is connected to a medical device by a tube, and medical treatment such as blood collection from a blood vessel of a patient is performed using the medical device.
The used winged needle is removed from the patient and discarded. However, if the needle tube is left exposed, there is a risk that the needle tube may be accidentally stabbed in a human hand or the like (a so-called “mis-stick”).

[0003]

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a winged needle capable of avoiding a puncture.

[0004]

A winged needle according to the present invention for solving the above-mentioned problems comprises a needle tube having a rear end inserted into a tube, a storage tube for storing the needle tube, and a storage tube for storing the needle tube. A pair of flexible wings provided substantially integrally with the outer peripheral side wall, wherein the needle tube can be fixed to the storage tube in a state protruding from the distal end of the storage tube and released from the fixed state. It is provided so as to be able to be stored in a storage tube, a slit is formed by cutting a rear end portion of the side wall of the storage tube in the axial direction, and when the needle tube is stored in the storage tube, the tube can be inserted between the slits and fixed. It is characterized by having done.

According to the winged needle having such a configuration, first, the needle tube is fixed to the storage tube in a state of protruding from the tip of the storage tube,
Subsequently, both wings of the storage tube are grasped in a palm-sliding state, and the needle tube is punctured into the blood vessel of the patient. Then, both wings are spread and attached to the patient's skin with an adhesive tape, and medical actions such as blood collection are performed with the needle tube fixed. After the medical procedure is completed, the spread wings are removed from the skin of the patient except for the adhesive tape, and the wings are grasped in a palm joint state, and the needle tube is withdrawn from the blood vessel.

[0006] When the winged needle becomes used in this way,
The needle tube is released from the fixed state and gradually moved rearward to be stored in the storage tube, and then the tube is inserted into the slit of the storage tube and fixed. As a result, the needle tube is stored and fixed in the storage tube, and erroneous sticking by the needle tube can be avoided.

[0007] In order to solve the above-mentioned problem, a hole is formed in the side wall of the storage cylinder and connected to the end of the slit. When the needle tube is stored in the storage cylinder, the tube is inserted through the slit. It is good to be able to fit in a hole.

In this case, when the needle tube of the winged needle is stored in the storage tube, the tube is fitted into the hole via the slit, so that the needle tube is securely fixed by the storage tube, thereby preventing erroneous insertion by the needle tube. it can.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a winged needle according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the winged needle of the first embodiment, FIG. 2 is an explanatory diagram of a method of using the winged needle of the first embodiment, and FIG. 3 is a diagram of the winged needle of the second embodiment. It is a perspective view of a principal part. The winged needle shown in FIG.
A tube 2 into which the rear end of the needle tube 1 is inserted, a substantially cylindrical storage tube 3 longer than the needle tube 1, and a flexible tube 1 attached to the outer peripheral side wall of the distal end of the storage tube 3. It has a pair of wings 4,4. A knurl 5 is provided at the tip of the tube 2 (the portion where the needle tube 1 is inserted). The pair of wings 4, 4 has knurled eyes 6 on the surface opposite to the storage cylinder 3.
Is provided.

A hole 7 having a diameter substantially the same as that of the tube 2 is formed in the side wall of the storage tube 3 at a position away from the tip of the storage tube 3 by more than the length of the needle tube 1. Further, a slit 8 extending from the rear end of the storage cylinder 3 to the hole 7 is provided by cutting a side wall of the storage cylinder 3. At the start end of the slit 8, an expansion part 9 is formed which gradually expands toward the rear end of the protection cylinder 3.

FIG. 2 shows a method of using the winged needle having the above-described configuration.
This will be described with reference to FIG. First, the distal end of the tube 2 is fitted to the distal end of the storage tube 3 with the needle tube 1 protruding from the distal end of the storage tube 3 (FIG. 2A). Since the knurl 5 is provided at the tip of the tube 2, the tip is inserted into the storage tube 3.
The tube 2 does not easily move with respect to the storage tube 3 when fitted to the tip of the tube. Therefore, the needle tube 1 can be fixed to the storage tube 3 in a state where the needle tube 1 protrudes from the distal end of the storage tube 3.

Although not shown, the two wings 4 of the storage cylinder 3
4 is grasped in a hand-armed state and the needle tube 1 is punctured into a patient's blood vessel,
Subsequently, the both wings 4 and 4 are spread and attached to the patient's skin with an adhesive tape, and the needle tube 1 is fixed to perform a medical operation such as blood collection. Since the knurls 6 are provided on the two wings 4, the wings 4, 4 are hard to slip when the two wings 4, 4 are gripped in a palm joint state with the knurls 6 outside, and the needle tube 1 is easily punctured. be able to. After the medical procedure is completed, the two wings 4 and 4 spread apart from the adhesive tape are removed from the patient's skin, and the two wings 4 and 4 are grasped in a palm joint state and the needle tube 1 is held.
Withdraw from the blood vessel.

When the winged needle is removed from the patient and the winged needle is used, if the tube 2 is strongly pulled rearward while holding down the storage tube 3, the tube 2 slides against the inner peripheral wall of the storage tube 3 and moves backward. Move slowly. Then, after the needle tube 1 is stored in the storage tube 3, the tube 2 is fitted into the hole 7 immediately behind the needle tube 1 (FIG. 2B). As described above, since the hole 7 is located at a position axially away from the distal end of the storage tube 3 by the length of the needle tube 1, when the tube 2 is fitted into the hole 7 at least immediately behind the needle tube 1, the needle tube 1 becomes 3, the distal end of the needle tube 1 is located behind the distal end of the storage tube 3. By fixing the needle tube 1 in the state of being stored in the storage tube 3 in this manner, erroneous insertion by the needle tube 1 can be avoided.

The winged needle of the second embodiment is the first needle shown in FIG.
Unlike the winged needle of the embodiment, the tip of the tube 2 (the portion where the needle tube 1 is inserted) is not provided with the knurls 5 but as shown in FIG. ing. Other configurations are the same as those of the above-described embodiment, so that illustration and description are omitted. According to the winged needle of the present embodiment, when the distal end portion of the tube 2 is fitted into the storage tube 3, the annular convex portion 10 is pressed against the inner peripheral wall of the storage tube 3, and the needle tube 1 projects from the distal end of the storage tube 3. Can be fixed to the storage tube 3. In addition, by strongly pulling the tube 2 rearward, the needle tube 1 can be moved rearward while sliding the annular convex portion 10 against the inner peripheral wall of the storage tube 3 and stored in the storage tube 3. In the second embodiment, as in the first embodiment, the needle tube 1 is fixed to the storage tube 3 in a state of being stored in the storage tube 3 by fitting the tube 2 into the hole 7. Sting can be avoided.

As another embodiment of the above two embodiments, the hole 7 may be omitted. In such a case, the needle tube 1 is stored and fixed in the storage tube 3 by inserting and fixing the tube 2 between the slits 8, so that erroneous insertion by the needle tube 1 can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a winged needle according to a first embodiment.

FIG. 2 is a diagram illustrating a method of using the winged needle according to the first embodiment.

FIG. 3 is a perspective view of a main part of a winged needle according to a second embodiment.

[Explanation of symbols]

1 ‥ needle tube, 2 ‥ tube, 3 ‥ storage cylinder, 4 ‥ wing, 7 ‥
Hole, 8mm slit

Claims (2)

[Claims] 1. A needle tube having a rear end inserted into a tube, a storage tube for storing the needle tube, and a pair of flexible wings provided substantially integrally with an outer peripheral side wall of the storage tube. The needle tube can be fixed to the storage tube in a state where the needle tube protrudes from the distal end of the storage tube, and can be released from the fixed state so as to be stored in the storage tube. A winged needle, characterized in that a slit is formed by cutting in the direction, and the tube can be inserted between the slits and fixed when the needle tube is stored in the storage tube. 2. A side wall of the storage cylinder is provided with a hole connected to a terminal end of the slit, and the tube can be fitted into the hole through the slit when the needle tube is stored in the storage cylinder. The winged needle according to claim 1, wherein: