JP2021020033A - Puncture aid - Google Patents

Abstract

To provide a puncture aid that has a simple structure, makes work for puncturing a blood vessel with a needle easy, and is capable of inhibiting movement of a blood vessel going away to the left, to the right, or obliquely in puncturing the blood vessel with a needle when the blood vessel exists at a deep location in thick subcutaneous tissue under skin.SOLUTION: A puncture aid 1 having elastic deformability for fitting it to an arm has a simple structure composed of: a body part, in a tapered shape, a cylinder with an outer periphery of inner wall having a part at which an open part 3 is formed; a spiral salient 4 in a longer direction of the body part's inner periphery; and a C-shaped salient. The puncture aid adheres tightly to an arm 7, suppresses stress D in subcutaneous tissue around a blood vessel 12 and a muscle 11 while applying tension to the arm 7 via pressing force B, E, and suppresses, via pressing force C applied during puncture, stress D making the blood vessel go away to the left, to the right, or obliquely to inhibit the blood vessel at a deep location in thick subcutaneous tissue from going away.SELECTED DRAWING: Figure 6

Description

The present invention relates to a puncture aid that assists in puncturing a blood vessel.

In the medical field, puncture of blood vessels is frequently performed for blood collection, injection, continuous infusion, and placement of an intravascular catheter, and it is necessary that the direction of the punctured blood vessel matches the running of the needle. is there. However, for example, in patients with weak skin, muscles around blood vessels, and subcutaneous tissue, when puncturing a needle while looking at the blood vessel with ultrasonic waves, the blood vessel escapes diagonally to the left and right, and the needle may be punctured. Situations that do not go well often occur. In such a case, the patient's mental distress increases, and there arises a problem of causing extra damage to the punctured skin, muscles, and arteries, veins, and nerves around the blood vessels. Therefore, various puncture aids that facilitate puncture have been proposed (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-156053

The puncture aid according to Patent Document 1 has a simple structure, but is used for the forearm having a shallow puncture site and a small amount of subcutaneous tissue to suppress the escape of blood vessels, but for blood vessels having a large amount of subcutaneous tissue and a deep position. Has a problem that the depth of penetration of the protrusions that hold the blood vessels is insufficient and the escape of the blood vessels cannot be suppressed.

The present invention has been made to solve the problems associated with the above techniques, and has a simple structure, and when a blood vessel at a deep position is punctured by applying pressure to a subcutaneous tissue or a muscle, the blood vessel escapes. It is an object of the present invention to provide a puncture assisting tool capable of suppressing movement (stress).

The puncture aid of the present invention for achieving the above invention has an elastic deformability to be fitted into an arm, a main body portion in which a part of the outer peripheral inner wall of a cylinder is formed with an open portion, and an inner portion of the main body portion. It is characterized in that a spiral convex portion and a C-shaped convex portion are formed in the circumferential longitudinal direction, and an interference portion is formed of a soft material from the outer peripheral surface to the tip of the open portion.

According to the present invention, the puncture aid has an elastic deformability to be fitted into the arm, a main body portion having a tapered shape and a part of the outer peripheral inner wall of the cylinder having an open portion, and an inner peripheral length of the main body portion. It has a simple structure consisting of a spiral convex part and a C-shaped convex part in the direction, and it is in close contact with the arm, tension can be applied to the skin by pressing, and subcutaneous tissue, muscle, by pressing applied at the time of puncture. It has become possible to suppress the stress that blood vessels escape diagonally to the left and right.

It is a slope view for demonstrating the puncture aid of an embodiment. It is a front view of the puncture aid shown in FIG. It is sectional drawing of the puncture aid shown in FIG. It is a perspective view for demonstrating an example of the usage form of the puncture aid shown in FIG. It is a side view of the usage form of the puncture aid shown in FIG. It is sectional drawing of the usage form of the puncture aid shown in FIG. It is sectional drawing of the usage form of the puncture aid shown in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a main body portion having an elastic deformability to be fitted into an arm, and a part of the outer peripheral inner wall of the cylinder is formed with an open portion 3, and a spiral shape 4 in the inner peripheral longitudinal direction of the main body portion of FIG. The convex portion of the above and the cut surface of FIG. 3 are formed with a convex portion of approximately C-shaped 5, and the outer peripheral surface to the tip of the open portion are formed from the interference portion with a soft material. The interference portion includes the arm and the skin. A puncture aid 1 characterized in that it is formed of vinyl tape 2 as an example of a portion in contact with the puncture aid 1.

The cylindrical portion of FIGS. 1 to 5 is a tapered puncture assisting tool 1 having a long shape of about 2/3 of the arm, and the opening 3 is a site to be disinfected or disinfected when palpating a blood vessel 12. The structure is such that the part to which the sound wave 9 is applied and the part to be punctured can be surely secured, and the workability can be improved.

The inner diameter of the main body of FIGS. 4 and 5 is smaller than that of the arm to which the arm is adapted, and the puncture aid 1 is characterized by being inserted into the arm from the opening 3 and applying tension to the exposed skin surface of the opening 3. is there.

It is a puncture assisting tool 1 that punctures a needle 8 into a blood vessel 12 from the opening portion 3 of FIGS. 4, 5 and 6.

The spiral convex portion 4 provided on the inner peripheral portion of FIGS. 1 to 6 has a spiral convex portion 4 in a range of 2/3 from the arm side 7 to the main body portion, and has a height of 0.2 to 0.5 mm. Puncture aid 1 consisting of the convex part of. Further, it has a feature that the concave portion composed of the subcutaneous tissue and the muscle 11 is pushed to be more closely attached to the arm and the movement of the puncture aid 1 is suppressed.

The C-shaped convex portion 5 provided on the inner peripheral portion of FIGS. 2, 4 and 5 covers a range of 1/3 of the head side 6 and a range of 1/3 of the arm side 7 from the main body portion at a height of 0. Puncture aid 1 consisting of a convex portion of 2 to 0.5 mm. In addition, the size is smaller than that of the arm, and the left and right end 1/3 of the main body is stiffer than the trunk of the main body, and has a feature that the puncture assist tool 1 is suppressed from moving.

The puncture assisting tool 1 characterized in that the elastically deformed material of FIGS. 1 to 6 is a material harder than the skin and is formed of a synthetic resin.

The puncture aid 1 shown in FIGS. 1 to 6 is made of a material that allows the needle 8 in the blood vessel 12 to be confirmed even under the condition that the ultrasonic wave 9 and the roentgen are constantly used, and the puncture operation is performed. It is a puncture assisting tool 1 having a feature that does not interfere with the above.

In FIG. 6, by attaching the puncture assisting tool 1 and placing the arm on the desk, the puncture assisting tool 1 comes into close contact with the skin, and the pressing B from the desk toward the arm 7 and the subcutaneous tissue / muscle 11 from the puncture assisting tool 1 -The pressure of E toward the blood vessel 12 and the blood vessel 9 increases, and the pressure C generated when the blood vessel 12 is punctured with the needle 8 by applying the ultrasonic wave 9 exerts a stress that moves diagonally to the left and right of the subcutaneous tissue, muscle, and blood vessel 12. It is a puncture assisting tool 1 that can be suppressed and reduce the work load of medical personnel.

Therefore, the problem of failing to puncture the blood vessel 12, for example, reducing the mental burden on the medical staff and the difference in technical ability, increasing the physical pain of the patient, and avoiding extra damage to the puncture site, etc. Can be done.

FIG. 7 is a diagram showing the direction in which the blood vessel moves and the stress when the needle is punctured by applying ultrasonic waves without the puncture aid 1 attached.

The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the claims. For example, the puncture aid 1 is currently one size, but it can be changed to S, M, and L sizes.

It is also possible to narrow the positions of the spiral convex portion 4, the C-shaped convex portion 5, and the opening 3 so that the structure can easily apply pressure to the skin tension, subcutaneous tissue, and muscle 11.

1 Puncture aid 2 Vinyl tape (skin protection part)
3 Opening (palpation / disinfection part echo contact part)
4 Spiral convex part 5 C-shaped convex part 6 Head side 7 Arm side 8 Needle 9 Ultrasound 10 Bone 11 Subcutaneous tissue / muscle 12 Blood vessel A Blood vessel running direction.
B The direction of pressure that moves from the desk in the direction of subcutaneous tissue, muscles, bones, blood vessels, and ultrasonic waves.
C The direction of pressing that moves from the ultrasonic wave / needle to the subcutaneous tissue / muscle / bone / blood vessel / puncture aid / desk.
D Direction of stress moving from blood vessels toward subcutaneous tissue, muscles, bones, ultrasound, puncture aids, and desks.
E The direction of pressure that moves from the puncture aid in the direction of subcutaneous tissue, muscles, blood vessels, and ultrasonic waves.

Claims (6)

A main body part that has an elastic deformability that fits into the arm and has an open part formed on the outer peripheral inner wall of the cylinder, a spiral convex part in the inner circumferential longitudinal direction of the main body part, and a C-shaped A puncture assisting tool characterized in that a convex portion is formed and an interference portion is formed of a soft material from the outer peripheral surface to the tip of the open portion. The puncture aid according to claim 1, wherein the cylindrical portion is cut into a C shape and has a long shape having about 2/3 of an arm. The puncture aid according to claim 1 or 2, wherein the inner diameter of the main body is smaller than the applicable arm, and the puncture aid is inserted from the open portion and punctured from the exposed surface of the skin of the open portion. The puncture aid according to claim 1, wherein the spiral convex portion provided on the inner peripheral portion comprises a convex portion having a height of 0.2 to 10 mm. The puncture aid according to claim 1, wherein the C-shaped convex portion provided on the inner peripheral portion is composed of a convex portion having a height of 0.2 to 10 mm. The elastically deformed material is a material harder than the skin, and is the puncture aid according to claims 1 to 6.