JPWO2013136967A1 - Puncture needle - Google Patents

Abstract

A winged needle (1) using the puncture needle of the present invention comprises a needle body (2) having a needle tip (21) at the tip, a hub (3) provided on the proximal end side of the needle body (2), A pair of wings (4a, 4b) provided on the hub (3) and projecting in opposite directions through the hub (3), and having flexibility connected to the proximal end side of the hub (3) A tube (5) and an absorbent material (6) capable of absorbing blood existing on the surface of the living body in a puncture state where the needle body (2) is punctured into the living body. This absorbent material (6) is provided on at least a part of the surface of the needle body (2) located on the living body side in the puncture state of the hub (3) and the tip of the hub (3). Is provided.

Description

  The present invention relates to a puncture needle.

  A puncture needle is generally composed of a needle body and a hub provided at the proximal end of the needle body, and further includes an absorbent body for absorbing blood adhering to the needle body after use ( For example, see Patent Document 1). Here, when the needle body is punctured into the living body or during the subsequent operation, bleeding may occur from the living body, and blood may flow out to the surface (on the skin).

  However, the absorbent body described in Patent Document 1 can absorb blood adhering to the needle body after the needle body is removed from the living body, but in the puncture state in which the needle body is punctured into the living body, It cannot absorb the blood that is present.

  If the blood existing on the surface of the living body in such a puncture state is left unattended, the blood scatters to the surrounding area, thereby increasing the risk of contact with a medical worker such as a nurse and blood infection.

JP 2002-315829 A

  An object of the present invention is to provide a puncture needle that absorbs blood existing on the surface of a living body in a puncture state in which a needle body is punctured and reduces the risk of blood contamination due to inadvertent contact with the skin. There is to do.

Such an object is achieved by the present inventions (1) to (4) below.
(1) a needle body having a needle tip at the tip;
A hub provided on the proximal end side of the needle body,
A puncture needle comprising an absorbent material capable of absorbing and / or coagulating blood existing on the surface of the living body in a puncture state where the needle body is punctured into the living body.

  (2) The absorbent material is provided on at least a part of the surface of the hub on the living body side in the puncture state of the hub and the tip of the hub in the longitudinal direction of the needle body. The puncture needle according to (1) above.

(3) Furthermore, it has a pair of wings provided in the hub and projecting in opposite directions through the hub,
The absorbent material is, in the longitudinal direction of the needle body, a surface located on the living body side in the puncture state of the hub, a tip portion of the hub, a surface located on the living body side in the puncture state of the wing, And the puncture needle as described in said (1) or (2) provided in at least one part of the front-end | tip part of the said wing | blade.

  (4) The puncture needle according to (2) or (3), wherein the absorbent material provided in the middle of the needle body in the longitudinal direction covers the entire circumferential direction of the needle body.

  Moreover, in the puncture needle of this invention, when the full length of the said needle body is set to A [cm], the length along the longitudinal direction of the said needle body of the said absorber provided in the middle of the longitudinal direction of the said needle body Is preferably 0.1A to 0.7A.

  In the puncture needle of the present invention, it is preferable that the absorbent material is provided in contact with the hub.

  Moreover, in the puncture needle of this invention, it is preferable that the said absorber is comprised at least one among the foam which has hydrophilic property, and the nonwoven fabric which has hydrophilic property.

  Moreover, in the puncture needle of this invention, it is preferable that the porosity of the said foam is 50 to 95%.

In the puncture needle of the present invention, the absorbent material may be polyurethane, polyvinyl alcohol, polyamide, polysulfone, policyal sulfone, polyvinylpyrrolidone, polyacrylamide, polyacrylate, polymethacrylate and cellulose, or an alloy (mixed material) of these materials. It is preferable that it is comprised with the material containing at least 1 sort (s) selected from the group which consists of a body.
In the puncture needle of the present invention, the absorbent material preferably contains a blood coagulant.

  According to the present invention, since the absorbent material is provided, even if blood leaks to the surface of the living body by puncturing the living body with the needle body, the blood can be absorbed by the absorbent material. For this reason, the risk of blood contamination due to inadvertent contact with the skin can be reduced.

FIG. 1 is a perspective view showing a first embodiment of a winged needle. FIG. 2 is a side view of the winged needle shown in FIG. FIG. 3 is a perspective view showing a second embodiment of the winged needle. FIG. 4 is an enlarged side view of the winged needle shown in FIG. FIG. 5 is a perspective view showing a third embodiment of the winged needle. FIG. 6 is an enlarged side view of the winged needle shown in FIG.

  Hereinafter, the puncture needle of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings. In the following, a case where the puncture needle of the present invention is applied to a winged needle (indwelling needle) will be described as a representative.

<First Embodiment>
FIG. 1 is a perspective view showing a first embodiment of the winged needle, and FIG. 2 is a side view of the winged needle shown in FIG. In the following, for convenience of explanation, the upper side in FIG. 1 and the lower left side in FIG. 2 are referred to as “tip”, and the lower side in FIG. 1 and the upper right side in FIG.

  The winged needle 1 includes a needle body 2, a hub 3 provided on the proximal end side of the needle body 2, a pair of wings 4a and 4b, and a flexible tube 5 connected to the proximal end side of the hub 3. And an absorbent material 6 capable of absorbing blood.

  The needle body 2 is made of, for example, a metal material such as stainless steel, aluminum or aluminum alloy, titanium or titanium alloy, and a sharp needle tip 21 is formed at the tip thereof. The needle body 2 is constituted by a needle tube having a hollow portion that becomes a flow path for body fluid such as blood or infusion, and an inlet / outlet port 22 through which liquid enters and exits is formed at the distal end portion of the needle body 2.

  Although the full length of the needle body 2 is not specifically limited, It is preferable that it is about 20-70 mm, and it is more preferable that it is about 30-50 mm.

  Moreover, it is preferable that the outer diameter of the needle body 2 is about 0.3-1.5 mm, and it is more preferable that it is about 0.5-1 mm.

  A cylindrical hub 3 is fixed to the outer peripheral portion of the proximal end of the needle body 2 in a liquid-tight manner. A hollow portion serving as a liquid flow path is formed inside the hub 3.

  The wings 4 a and 4 b have a flat plate shape and protrude in opposite directions through the hub 3. In the present embodiment, the wings 4a and 4b are formed integrally with the hub 3, but their base portions are connected to each other to form a single flat plate, and the hub 3 is joined thereto. There may be.

  The wings 4a and 4b have flexibility, and are configured to be openable and closable by bending or bending near the roots of the wings 4a and 4b. Thin portions are formed near the roots of the wings 4a and 4b in order to facilitate opening and closing.

  When the needle body 2 is punctured into a living body, the wings 4a and 4b are closed with fingers and the puncture operation is performed. When the needle body 2 is placed, the wings 4a and 4b are opened, and the wings 4a and 4b are fixed to the skin with an adhesive tape or the like.

  As shown in FIGS. 1 and 2, a flexible tube 5 serving as a flow path for bodily fluids, infusions, or the like is fluid-tightly connected to the proximal end side of the hub 3. Is in communication with the lumen of the needle body 2.

  The constituent materials of the hub 3, the blades 4a and 4b, and the tube 5 are not particularly limited. For example, polyolefin such as polyethylene, polypropylene, and ethylene-vinyl acetate copolymer, polyvinyl chloride, polybutadiene, polyamide, polyester, and the like. Is mentioned.

  In order to secure the internal visibility, these are preferably made of a transparent or translucent material.

  An absorbent material 6 is provided in the middle of the needle body 2 in the longitudinal direction. This absorbent material 6 can absorb blood existing on the surface of the living body in a puncture state where the needle body 2 is punctured into the living body. Thereby, even if blood leaks to the surface of the living body during the puncture operation or in the subsequent treatment, the blood can be absorbed by the absorbent material 6 (see FIG. 2). As a result, it is possible to reduce the risk of blood-infection of medical staff such as nurses.

  In the present embodiment, the absorbent 6 has a cylindrical shape covering the entire circumferential direction of the needle body 2 and is provided in contact with the hub 3. Thereby, the size of the absorbent 6 can be increased as much as possible, and the amount of blood that can be absorbed by the absorbent 6 can be increased. Moreover, it is suppressed that the length of the needle body 2 becomes excessively long, and the length of the distal end portion of the needle body 2 exposed from the absorbent material 6 can be sufficiently secured. For this reason, it is possible to prevent the operability of the winged needle 1 from being lowered.

  Here, when the total length of the needle body 2 is A [cm], the length B of the absorbent material 6 along the longitudinal direction of the needle body 2 is preferably about 0.1 A to 0.7 A, and 0 More preferably, it is about 2A to 0.65A. Thereby, while the quantity of the blood which can be absorbed with the absorber 6 can fully be increased, the fall of the operativity of the winged needle 1 can be prevented more reliably.

  The outer diameter of the absorbent 6 is preferably the same as the outer diameter of the hub 3. Thereby, it can prevent that the absorber 6 becomes obstructive at the time of puncture operation.

  Examples of such absorbent material 6 include a foam having hydrophilicity, a nonwoven fabric having hydrophilicity, and a woven fabric having hydrophilicity, and one or more of these can be used in combination. In particular, it is preferable that at least one of a foam having hydrophilicity and a nonwoven fabric having hydrophilicity is constituted. Since the absorbent material 6 has hydrophilicity, the ability of the absorbent material 6 to absorb blood can be further increased.

  When the absorbent material 6 is made of a foam, the porosity is preferably about 50 to 95%, more preferably about 65 to 90%. By setting the porosity of the foam within the above range, the absorbent 6 can obtain sufficient strength while sufficiently maintaining the ability to absorb blood.

  The absorbent 6 can be composed of various materials having hydrophilicity, and in particular, polyurethane, polyvinyl alcohol, polyamide, polysulfone, policyal sulfone, polyvinylpyrrolidone, polyacrylamide, polyacrylate, polymethacrylate and cellulose, It is preferable to be made of a material containing at least one selected from the group consisting of alloys (mixtures) of these materials. Thereby, the hydrophilicity of the absorber 6 can be improved more.

  Moreover, it is preferable that the absorbent material 6 contains a blood coagulant. Thereby, the blood absorbed by the absorbent 6 can be coagulated in the absorbent 6. For this reason, it can prevent more reliably that blood leaks from the absorbent material 6 again.

  Examples of the blood coagulant include calcium chloride, thrombin, vitamin K, ADP, collagen, fibrin, gelatin, and sodium arbonate.

Next, an example of how to use the winged needle 1 will be described.
[1] When performing an operation of piercing the living body with the needle body 2, the wings 4a and 4b are picked with fingers. Thus, the blades 4a and 4b are closed so that the upper surfaces of the blades 4a and 4b face each other. In this state, the needle body 2 is punctured into the living body (blood vessel).

  [2] When the fingers are released from the wings 4a and 4b, the wings 4a and 4b are opened by the elastic force. Thereafter, the winged needle 1 is placed in the living body by fixing the wings 4a, 4b to the skin with an adhesive tape or the like.

  [3] After using the winged needle 1, the adhesive tape is peeled off to release the fixation to the skin. Then, similarly to [1], the needle body 2 is removed from the living body with the wings 4a and 4b closed. At this time, even when the needle 2 is punctured into the living body or during the subsequent operation, even if bleeding (blood bleeds on the skin), the winged needle 1 absorbs the blood by the absorbent material 6. Therefore, it is possible to prevent blood from adhering to the finger and to avoid (reduce) the risk of blood infection.

  The absorbent material 6 may be separated from the hub 3. Moreover, you may make it selectively provide the absorber 6 so that a part of circumferential direction of the needle body 2 may be covered, ie, the surface located in the living body side of the needle body 2 in the puncture state.

Second Embodiment
FIG. 3 is a perspective view showing a second embodiment of the winged needle, and FIG. 4 is an enlarged side view of the winged needle shown in FIG. 3. In the following description, for convenience of explanation, the upper side in FIG. 3 and the lower left side in FIG. 4 are referred to as “tip”, and the lower side in FIG. 3 and the upper right side in FIG.

  Hereinafter, the second embodiment will be described with a focus on differences from the first embodiment, and description of similar matters will be omitted.

  The winged needle 1 of the second embodiment is the same as the first embodiment except that the arrangement position of the absorbent 6 is different.

  As shown in FIGS. 3 and 4, the hub 3 is formed with a reduced diameter portion (stepped portion) 31 whose outer diameter is reduced at the tip portion. The reduced diameter part 31 is provided with a ring-shaped first absorption part 61.

  Further, a sheet-like second absorbing portion 62 is provided on the lower surface 32 of the hub 3 (the surface located on the living body side in the puncture state) (see FIG. 4).

  In other words, in the present embodiment, the absorbent 6 is composed of the first absorbent portion 61 and the second absorbent portion 62.

  The winged needle 1 according to the second embodiment also produces the same actions and effects as the winged needle 1 of the first embodiment.

  In the absorbent material 6, either one of the first absorption part 61 and the second absorption part 62 can be omitted.

<Third Embodiment>
FIG. 5 is a perspective view showing a third embodiment of the winged needle, and FIG. 6 is an enlarged side view of the winged needle shown in FIG. In the following, for convenience of explanation, the upper side in FIG. 5 and the lower left side in FIG. 6 are referred to as “tip”, and the lower side in FIG. 5 and the upper right side in FIG.

  Hereinafter, the third embodiment will be described with a focus on differences from the first and second embodiments, and description of similar matters will be omitted.

  The winged needle 1 of the third embodiment is the same as the first embodiment except that the arrangement position of the absorbent 6 is different.

  As shown in FIGS. 5 and 6, a band-shaped (long-shaped) third absorbing portion 63 is provided on the tip surface 41 of the blades 4 a and 4 b. In addition, a sheet-like fourth absorbing portion 64 is provided on the lower surface 42 of the wings 4a and 4b (surface located on the living body side in the puncture state).

  That is, in the present embodiment, the absorbent material 6 includes the third absorbent portion 63 and the fourth absorbent portion 64. The fourth absorption portion 64 may be provided on the entire lower surface 42 of the wings 4a and 4b (see FIG. 6), but preferably, when performing the puncture operation and the extraction operation of the needle body 2. The wings 4a and 4b are provided except for a portion where the wings are touched with a finger.

  The winged needle 1 according to the third embodiment also produces the same functions and effects as the winged needle 1 of the first embodiment.

  In the absorbent material 6, one of the third absorbent portion 63 and the fourth absorbent portion 64 can be omitted.

  As mentioned above, although the puncture needle of this invention was demonstrated about embodiment of illustration, this invention is not limited to these, Each part which comprises a puncture needle of the arbitrary structures which can exhibit the same function Can be substituted. Moreover, arbitrary components may be added.

Moreover, in this invention, you may make it combine the arbitrary structures of the said 1st-3rd embodiment.
For example, the puncture needle may not have a wing or a tube.

The puncture needle of the present invention exists on the surface of the living body in a puncture state in which the needle body having a needle tip at the tip, a hub provided on the proximal end side of the needle body, and the needle body is punctured into the living body. And an absorbent capable of absorbing and / or coagulating blood. Therefore, in the puncture state in which the needle body is punctured into the living body, the blood existing on the surface of the living body is absorbed to reduce the risk of blood contamination due to careless contact with the skin.
Therefore, the puncture needle of the present invention has industrial applicability.

DESCRIPTION OF SYMBOLS 1 Wing needle 2 Needle body 21 Needle tip 22 Entrance / exit 3 Hub 31 Reduced diameter part 32 Lower surface 4a, 4b Wing | blade 41 Tip surface 42 Lower surface 5 Tube 6 Absorbing material 61 1st absorption part 62 2nd absorption part 63 3rd absorption Part 64 Fourth absorption part A, B Length

Claims (4)

A needle body having a needle tip at the tip;
A hub provided on the proximal end side of the needle body,
A puncture needle comprising an absorbent material capable of absorbing and / or coagulating blood existing on the surface of the living body in a puncture state where the needle body is punctured into the living body.   The absorbent material is provided on at least a part of a surface of the hub that is positioned on the living body side in the puncture state of the needle body and a tip portion of the hub. The puncture needle as described in 2. And a pair of wings provided on the hub and projecting in opposite directions through the hub,
The absorbent material is, in the longitudinal direction of the needle body, a surface located on the living body side in the puncture state of the hub, a tip portion of the hub, a surface located on the living body side in the puncture state of the wing, And the puncture needle of Claim 1 or 2 provided in at least one part of the front-end | tip parts of the said wing | blade.   The puncture needle according to claim 2 or 3, wherein the absorbent material provided midway in the longitudinal direction of the needle body covers the entire circumferential direction of the needle body.

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