WO2010055882A1

WO2010055882A1 - Needle access port for medical use

Info

Publication number: WO2010055882A1
Application number: PCT/JP2009/069272
Authority: WO
Inventors: 博信杉山; 勝美五十右
Original assignee: 日機装株式会社
Priority date: 2008-11-14
Filing date: 2009-11-12
Publication date: 2010-05-20
Also published as: JP2010115384A

Abstract

A needle access port (10) for medical use is provided with a body section (12) to which a tube for medical use is connected, a communicating tube raised from the outer peripheral surface of the body section (12) and having formed therein a communicating hole (21) communicating with the inside of the body section (12), a plug unit (16) for plugging an opening end of the communicating hole and punctured by a needle member, and a substantially flat plate-shaped flange section (26) projecting outward from the outer periphery of the communicating tube. Projections and recesses (30) consisting of grooves or ridges arranged in a substantially grid-like pattern are formed on the upper surface of the flange section (26), and the projections and recesses (30) prevent the needle member in contact therewith from slipping.

Description

Medical needle access port

The present invention relates to a medical needle access port that is connected to a medical tube and enables a needle member such as a syringe to be punctured so that the needle member can contact the medical tube.

Conventionally, a medical needle access port that allows access to a medical tube of a needle member such as a syringe is known. When injecting a fluid such as a chemical solution or air into a medical tube or sucking a fluid (for example, blood) flowing in the medical tube, a needle member such as a syringe is usually connected to the medical needle access port. The fluid is aspirated or injected through the needle member.

Such a medical needle access port is often provided with a trunk, a communication tube, a stopper, and the like. The body portion is a hollow cylindrical member having a medical tube connected to an end portion, and a flow path through which a fluid flows is formed at the center thereof. The communication cylinder is a hollow cylindrical member that is erected from the outer peripheral surface of the body portion, and a communication hole that communicates with the flow path is formed at the center thereof. The plug is a member that plugs the open end of the communication hole. This plug body is at least partially made of an elastic material such as rubber, and can puncture and penetrate the needle member.

Utility Model Registration No. 3011728

When injecting fluid into the medical tube or sucking fluid from the medical tube, puncture and penetrate the needle member through the plug. By penetrating the plug, the needle member is connected to the medical tube through the communication hole and the flow path, and the liquid can be sucked and injected through the needle member. During this puncture, the user normally holds the body of the medical needle access port with one hand and the needle member with the other hand. At this time, if the hand holding the needle member is shaken, the needle member may not collide with the plug body and may collide with other members around the plug body. The collision of the needle member with the other member may cause various problems such as contamination and breakage of the needle member and the other member.

Such a problem is somewhat mitigated by the technique described in Patent Document 1. Patent Document 1 discloses a technique for arranging a flat wing piece around a plug of a medical port. According to such a technique, the needle member that has not reached the plug body collides with the wing piece, thereby preventing the needle member from colliding with the other member to some extent. However, the blade piece used in Patent Document 1 has a flat surface with a flat surface and cannot prevent the colliding needle member from slipping. Therefore, after the needle member slips on the wing piece, the needle member slides off from the end of the wing piece, and finally, the slid down needle member may collide with another member. That is, even with the technique of Patent Document 1, it is difficult to effectively prevent the needle member from colliding with another member.

Therefore, an object of the present invention is to provide a medical needle access port that can more effectively prevent a needle member from colliding with another member.

The medical needle access port of the present invention has a hollow cylindrical body part to which a medical tube is connected to an end part, and stands from the outer peripheral surface of the body part, and communicates with the inside of the body part at a substantially center thereof. A communication cylinder in which a communication hole is formed; a plug body that plugs the open end of the communication hole; a plug body that is punctured by a needle member; and provided on an outer periphery of the communication cylinder and projecting outward And a hook portion that has a slip-inhibiting mechanism that inhibits the needle member coming into contact with the upper surface of the hook portion from slipping from the periphery of the hook portion.

In a preferred aspect, the sliding-inhibiting mechanism includes a plurality of irregularities formed on the upper surface. In addition, it is preferable that the sliding-inhibiting mechanism includes a rib or a groove provided along the periphery of the flange on the upper surface. In addition, it is preferable that the sliding-inhibiting mechanism is made of a material having a softness that can be punctured by the needle member, and includes a soft coating material that covers the upper surface. In addition, it is desirable that the sliding-inhibiting mechanism includes a configuration in which the collar portion is inclined so as to become higher as it approaches the periphery.

According to the present invention, the sliding-inhibiting mechanism inhibits the sliding of the needle member coming into contact with the upper surface of the buttocks from the periphery of the buttocks so that the needle member can be more effectively prevented from colliding with other members.

It is a top view of the medical needle access port which is an embodiment of the present invention. It is a front view of a medical needle access port. It is a side view of a medical needle access port. FIG. 2 is an exploded sectional view taken along line AA in FIG. It is a figure which shows the other example of a medical needle access port. It is a figure which shows the other example of a medical needle access port. It is a figure which shows the other example of a medical needle access port. It is a figure which shows the other example of a medical needle access port. It is a figure which shows the other example of a medical needle access port. It is a figure which shows the mode of the puncture operation | work using the conventional medical needle access port. It is a figure which shows the mode of the puncture operation | work using the conventional medical needle access port.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 are a top view, a front view, a side view, and an AA exploded sectional view of FIG. 1, respectively, of a medical needle access port 10 according to an embodiment of the present invention.

This medical needle access port 10 is a member connected to a medical tube (not shown) through which a fluid such as a drug solution or blood flows, and a needle member such as a syringe is punctured, whereby the medical tube of the needle member It is a member that allows access to The medical needle access port 10 includes a body portion 12, a communication tube 14 that stands from the outer peripheral surface of the body portion 12, a plug unit 16 that plugs the open end of the communication tube 14, and a protection member 18. .

The barrel 12 is a hollow cylindrical member having a flow path 20 through which a fluid flows in the center. A medical tube is connected to both ends of the body portion 12, and a fluid flowing through the medical tube flows into the flow path 20.

A communication tube 14 is erected from the outer peripheral surface of the trunk portion 12. A communication hole 21 communicating with the flow path 20 is formed at the center of the communication cylinder 14 (see FIG. 4). The inner diameter of the communication hole 21 is changed in two stages, and is roughly classified into a large diameter portion 21a located on the upper side and a small diameter portion 21b slightly smaller in diameter than the large diameter portion 21a. In the present embodiment, as shown in FIG. 4, the communication tube 14 and the body 12 are integrally formed. However, the body 12 and the communication tube 14 may be formed of a plurality of members.

The open end of the communication hole 21 is plugged by the plug unit 16. The plug unit 16 includes a rubber button 22 made of an elastic material and a cap 24 that fixes the rubber button 22 to the communication hole 21. The rubber button 22 is a cylindrical member that is inserted into the open end of the communication hole 21 and is made of an elastic material that is soft enough to allow the needle member to be punctured. The diameter of the rubber button 22 is larger than the diameter of the large diameter portion 21 a of the communication hole 21 and smaller than the diameter of the small diameter portion 21 b of the communication hole 21. Accordingly, the rubber button 22 inserted from the upper end (opening end) of the communication hole 21 stays at the upper end position of the small diameter portion 21b (lower end position of the large diameter portion 21a) and completely covers the small diameter portion 21b. . Further, the height of the rubber button 22 is slightly higher than the height of the large diameter portion 21 a of the communication hole 21. Therefore, the upper end of the rubber button 22 staying at the upper end position of the small diameter portion 21 b of the communication hole 21 slightly projects from the upper end of the large diameter portion 21 a of the communication hole 21.

The cap 24 presses and fixes the rubber button 22 from above, and has a substantially cylindrical shape with a completely open bottom. The cap 24 is placed on the upper side of the rubber button 22 housed in the communication tube 14 and is fixed to the communication tube 14 by known fixing means such as screwing, fitting, and adhesion. At the time of fixing, the rubber button 22 is pressed by the cap 24 to such an extent that fluid leakage from the communication hole 21 can be prevented. A through hole 24 a having a smaller diameter than the diameter of the rubber button 22 is formed in the approximate center of the top surface of the cap 24. Therefore, even when the rubber button 22 is pressed with the cap 24, a part of the rubber button 22 is exposed to the outside. A needle member such as a syringe is punctured from the exposed portion. The configuration of the plug unit 16 described here is also an example. If the opening end of the communication hole 21 can be hermetically plugged and can be punctured by a needle member, another configuration is adopted. Also good.

The protective member 18 is a substantially L-shaped member that is fixed to the outer peripheral surface of the body portion 12. A total of two protective members 18 are provided on each side of the communication tube 14. Each protection member 18 is roughly divided into a flange portion 26 that protrudes outward from the vicinity of the base of the communication tube 14, and a side portion 28 that extends downward in the orthogonal direction to the flange portion 26 (opposite to the communication tube 14 side). Is done. The flange 26 is provided to prevent the needle member from being unintentionally dropped, and has a special shape for preventing the drop, and this will be described in detail later.

The side portion 28 is a flat plate-like member extending downward from the bottom surface of the flange portion 26 (that is, in the direction opposite to the communication tube 14). The side portions 28 provided on each of the two protection members 18 are in a state of facing each other with the body portion 12 interposed therebetween. Each side portion 28 has a substantially rectangular shape with a size that substantially covers the entire side surface of the body portion 12. The side portion 28 is provided to facilitate the grasping of the medical needle access port 10 by the user. That is, when the needle member is punctured on the rubber button 22, that is, on the upper side of the medical needle access port 10, the user usually holds the lower side of the medical needle access port 10. However, the body 12 located below the medical needle access port 10 has a substantially cylindrical shape with a poor stability and is small in size, so that it is difficult to grip stably. There is. Therefore, in the present embodiment, the side portion 28 having a larger size than the body portion 12 and having a substantially flat plate shape is provided. By providing the side portion 28, the medical needle access port can be more easily and stably gripped. In addition, in order to further improve the stability during gripping, the outer surface of the side portion 28 is provided with irregularities such as ribs 32 or is coated with a high friction member (for example, rubber) to improve grip performance. You may let them.

The medical needle access port 10 configured as described above is used in the following procedure. First, the medical needle access port 10 is connected in advance to a medical tube such as a blood transfusion tube or an infusion tube. This connection is performed by connecting the end portions of the medical tube to both ends of the trunk portion 12. Further, this connection is performed in a state where the open end of the communication hole 21 is plugged with the plug unit 16, that is, in a state where the rubber button 22 is accommodated in the communication hole 21 and the cap 24 is fixed to the upper end of the communication cylinder 14.

Next, when it is desired to access the medical tube to which the medical needle access port 10 is connected, that is, when a fluid (chemical solution or air) is to be injected into the medical tube, or a fluid (chemical solution or blood flowing through the medical tube). ) Is punctured into the medical needle access port 10 with a needle member such as a syringe. When performing this puncturing operation, the user holds the lower side (the side portion 28 and the like) of the medical needle access port 10 with one hand and the needle member with the other hand. Then, the needle member is inserted into the rubber button 22 and penetrated. If the tip of the needle member penetrating the rubber button 22 reaches the communication hole 21 or the flow path 20 communicating with the communication hole 21, the fluid may be sucked or discharged through the needle member.

By the way, at the time of such a puncture operation, in the conventional medical needle access port, the needle member 100 may fall into an unexpected place and collide with other members. This will be described with reference to FIGS. FIGS. 10 and 11 are diagrams showing a state of puncturing work using a conventional medical needle access port 10 ^* .

As described above, when puncturing, as shown in FIG. 10, the needle member 100 is inserted into the rubber button 22 ^* and penetrated. However, since the rubber button 22 ^*, which is the puncture target position, is not a very large member, the tip of the needle member 100 may come off from the rubber button 22 ^* due to a hand shake or the like. In such a case, as shown in FIG. 11, the tip of the needle member 100 collides with the upper surface of the collar portion 26 ^* . Due to the collision with the collar 26 ^* , the needle member 100 is somewhat prevented from falling. However, the upper surface of the collar portion 26 ^* of the conventional medical needle access port 10 ^* is a flat surface without unevenness. Therefore, the needle member 100 that has collided, sliding the upper surface of the flange portion 26 ^*, there have been cases where slides down from the peripheral edge of the flange portion 26 ^*. The slid needle member 100 may collide with other members located around the medical needle access port 10 ^* , for example, a medical tube or other medical devices. As a result, the needle member 100 and other members may be damaged or contaminated.

In this embodiment, in order to reduce such a problem, the shape of the collar portion 26 is made special. This will be described again with reference to FIGS. As described above, the collar portion 26 of the present embodiment is a flat plate projecting outward from the vicinity of the base of the communication tube 14, and in a direction substantially orthogonal to the central axis of the communication tube 14, in other words, the puncture direction of the needle member It extends in a direction substantially orthogonal to. Each of the flanges 26 has a substantially semicircular shape when viewed from above. By arranging the flanges 26 on both sides of the two communication cylinders 14, a substantially circular plate material is arranged around the communication cylinders 14. It becomes the state that was done. At this time, the flange portion 26 functions as a wall that blocks between the communication tube 14 and the body portion 12. The presence of the collar portion 26 that functions like a blocking wall prevents the needle member from dropping into an unexpected position even if the needle member is detached from the rubber button 22 due to hand shake or the like. Is done. In the present embodiment, the substantially semi-circular collar portion 26 is provided around the base of the communication tube 14, but any other position and size can be used as long as the needle member detached from the rubber button 22 can collide. The shape and other positions may be provided. Therefore, the collar part 26 may be rectangular or elliptical. Further, the installation position of the collar portion 26 only needs to be higher than the grasping position of the medical needle access port 10 (in this embodiment, the side portion 28). For example, not the root of the communication tube 14 but the top of the cap 24. You may provide the collar part 26 in an end surface periphery. Furthermore, if the circumference | surroundings of the communication cylinder 14 can be enclosed, the number of the collar parts 26 is not limited to two, One or three or more may be sufficient.

Further, in the present embodiment, the collar portion 26 is provided with a sliding-inhibiting mechanism that inhibits the sliding of the needle member in contact with the surface of the collar portion 26. Although various forms can be considered as this sliding-inhibiting mechanism, in this embodiment, a plurality of irregularities 30 are formed on the upper surface of the collar portion 26 as the sliding-inhibiting mechanism. As shown in FIG. 1, the irregularities 30 are constituted by protrusions or grooves arranged in a lattice pattern, and can prevent slipping toward the periphery of the collar portion 26 of the needle member. As a result, even if the needle member accidentally collides with the upper surface of the collar part 26, the needle member is prevented from falling from the peripheral edge of the collar part 26. Thus, it is possible to effectively prevent problems such as a collision of the needle member with the other member and, consequently, breakage or contamination of the needle member or the other member.

Note that the sliding-inhibiting mechanism described here is merely an example, and other configurations may be used as long as the sliding-down of the needle member in contact with the surface of the collar portion 26 can be inhibited. For example, the arrangement form of the irregularities 30 may be other than a lattice shape. Specifically, as shown in FIG. 5, random irregularities 30 may be formed on the surface of the collar portion 26. Such random irregularities 30 can be obtained by mechanically and chemically roughening the surface of the collar portion 26 using a known surface roughening technique such as a satin processing technique or a graining technique. And by forming such random unevenness | corrugation 30, the slip toward the periphery of the collar part 26 of the needle member which is contacting is prevented, and the slide of the said needle member is prevented effectively.

Further, as illustrated in FIG. 6, arc-shaped protrusions or grooves (that is, irregularities 30) extending in the circumferential direction of the flange portion 26 may be provided as a sliding-inhibiting mechanism. By providing the protrusion or groove extending in the circumferential direction, the needle member is prevented from slipping in the radial direction, and as a result, the needle member is prevented from sliding off from the periphery of the collar portion 26. Furthermore, as illustrated in FIG. 7, a plurality of protrusions or grooves extending in the radial direction may be provided in addition to the arc-shaped protrusions or grooves. By providing the protrusion or groove extending in the radial direction, the movement range of the needle member is restricted, and the needle member is more reliably prevented from sliding off.

Further, as shown in FIGS. 8 and 9, the ribs 34 are provided on the periphery of the collar portion 26 to prevent the needle member from sliding down, as shown in FIGS. Also good. By providing the rib 34, the needle member that has collided with the collar portion 26 is prevented from moving outside the peripheral edge of the collar portion 26. As a result, the needle member and other members are prevented from being damaged or contaminated. In addition, you may provide the rib 34 not in the whole periphery of the collar part 26 but in a part of periphery. Instead of the rib 34, a groove into which the slid needle member falls may be provided on the periphery of the collar portion 26.

Furthermore, the sliding-inhibiting mechanism may include a soft coating material that covers the upper surface of the collar portion 26. The soft coating material is a coating material made of a material having such a softness that the needle member can be easily pierced, for example, a fiber material such as soft rubber, soft resin, and non-woven fabric. Covering the upper surface of the collar portion 26 with such a soft coating material effectively prevents the needle member from slipping. That is, the needle member that has collided with the upper surface of the collar part 26 due to camera shake or the like is stuck in the soft coating material that covers the upper surface of the collar part 26. Then, by piercing the soft coating material, the movement (sliding) of the needle member is effectively prevented, and as a result, the sliding of the needle member from the periphery of the collar portion 26 is also effectively prevented.

Furthermore, as another form, you may make the collar part 26 incline so that it may become high as it approaches the periphery. That is, for example, the collar portion 26 may be configured to have a bowl shape surrounding the communication tube 14. With this configuration, the movement of the needle member that has collided with the collar portion 26 to the periphery is restricted by gravity. As a result, the sliding from the peripheral edge of the needle member is effectively inhibited.

Also, a plurality of sliding-inhibiting mechanisms exemplified so far may be combined. Therefore, for example, ribs 34 as shown in FIGS. 8 and 9 may be formed on the periphery of the flange 26 shown in FIG. In addition, the flange portion 26 may be inclined and irregularities may be formed on the surface of the flange portion 26 or a soft coating material may be provided.

As described above, in this embodiment, a sliding-inhibiting mechanism that inhibits sliding from the periphery of the collar portion 26 of the needle member is provided. As a result, problems such as breakage and contamination of the needle member and other members due to sliding of the needle member are effectively prevented.

10 medical needle access port, 12 barrel, 14 communication tube, 16 plug unit, 18 protective member, 20 flow path, 21 communication hole, 22 rubber button, 24 cap, 26 collar, 28 side, 30 irregularities, 32 34 ribs, 100 needle members.

Claims

A hollow cylindrical body with a medical tube connected to the end; and
A communication tube that is erected from the outer peripheral surface of the body part and in which a communication hole that communicates with the inside of the body part is formed at the approximate center thereof;
A plug that plugs the open end of the communication hole, the plug being pierced by a needle member;
A substantially flat collar portion provided on the outer periphery of the communication tube and projecting outward;
With
The collar has a sliding-inhibiting mechanism that inhibits sliding of the needle member in contact with the upper surface of the collar from the periphery of the collar.
A medical needle access port.
The medical needle access port according to claim 1,
The medical needle access port, wherein the sliding-inhibiting mechanism includes a plurality of irregularities formed on the upper surface.
The medical needle access port according to claim 1,
The medical needle access port, wherein the sliding-inhibiting mechanism includes a rib or a groove provided along a peripheral edge of the flange on the upper surface.
The medical needle access port according to claim 1,
The medical needle access port, wherein the sliding-inhibiting mechanism is made of a material having a softness that can be punctured by the needle member, and includes a soft coating material that covers the upper surface.
The medical needle access port according to claim 1,
The medical needle access port characterized in that the sliding-inhibiting mechanism includes a configuration in which the collar portion is inclined so as to become higher toward the periphery.