JPH09122244A - Guide wire dispenser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guide wire dispenser storing a guide wire applied with hydrophilic coating, capable of being simply filled with water, preventing a water leak, and having good operability by providing a liquid feed port and a deaeration port, and sealing the deaeration port with a hydrophobic porous body. SOLUTION: This guide wire dispenser is provided with a guide wire dispenser main body 7 formed with a tube into a circular shape, a tube-like guide wire feed section 8 communicated with the guide wire dispenser main body 7, a liquid feed port 5, and a deaeration port 9, and the deaeration port 9 is sealed by a hydrophobic porous body. Only air selectively passes due to the air-permeable and water-nonpermeable sealing property of the hydrophobic porous body, the water injecting property and holding property are preeminent, and the characteristic of a guide wire 1 applied with hydrophilic coating can be sufficiently utilized. The guide wire 1 applied with hydrophilic coating can be used simply, safely, and cleanly.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a dispenser for a guide wire. More specifically, the present invention provides
The present invention relates to a guide wire dispenser that stores a guide wire coated with a hydrophilic coating in a state of being immersed in water and can be used simply, safely, and cleanly without exposing the guide wire to a dirty area.

[0002]

2. Description of the Related Art In recent years, with the progress of medical technology, interventional radiology for performing treatment and diagnosis via a catheter under a real-time display image has been widely used. In interventional radiology, first insert the guide wire into the body cavity through the puncture needle, and then push the catheter over the guide wire to push it to the target affected area, but to improve the slipperiness of the guide wire in the body cavity. It is common practice to apply a hydrophilic coating to the guide wire. As the hydrophilic coating material, for example, polyvinyl alcohol, polyvinylpyrrolidone, maleic acid-based polymer, polyacrylamide and the like, which are generally considered to be hydrophilic polymers, are often used. In order for the guide wire coated with these hydrophilic coatings to exhibit the original slipperiness, it is naturally necessary to sufficiently immerse the surface in water to form a sufficient water film on the surface of the guide wire. FIG. 1 is a perspective view of an aspect of a conventional guide wire dispenser. A conventional guide wire dispenser has a body tube 2 having a sufficient length for accommodating a long guide wire 1,
A straightener 4 having a guide wire supply port 3 is provided, and a liquid supply port 5 is provided at the end. Although the dispenser for a guide wire of this embodiment is usually made of a slippery material such as polyethylene, the main body tube is long and difficult to handle, and the material is poorly wet with water,
Even if water is injected, it is not a structure that water easily accumulates,
Even if water is injected with a syringe from the liquid supply port, it is easy to drain water when the syringe is removed, and the syringe is difficult to handle. Therefore, the doctor often needed to transfer the guide wire to a wide container and immerse it in water before using the guide wire. FIG. 2 is an explanatory view showing a state of the guide wire immersed in water. In this figure, the guide wire 1 is immersed in water filled in the pus tray 6. However, according to this method, of course, it is easy to become unclean and may cause infection, and
It was troublesome. To this end, a more hygienic and hassle-free guide wire dispenser has been developed. FIG. 3 is a perspective view of another aspect of the conventional guide wire dispenser. In the dispenser for a guide wire of this aspect, a tube is formed in an annular shape to form a dispenser body 7, and the dispenser body is provided with a straightener 4 having a guide wire supply port 3 and a liquid supply port 5. Guide wire 1
Is stored in a state of being wound around an annular dispenser body, so that it does not require a long body tube unlike the dispenser for a guide wire shown in FIG. 1 and is easy to handle. However, with the guide wire dispenser of this embodiment, even if water is injected from the liquid supply port 5, air is less likely to escape from the dispenser body, and it is not easy to completely fill the dispenser body with water. There was a problem that if the water was strongly injected, the water would flow out from the guide wire supply port 3.

[0003]

SUMMARY OF THE INVENTION According to the present invention, a guide wire coated with a hydrophilic coating can be housed, water can be simply enclosed, and water does not leak.
The purpose of the invention is to provide a guide wire dispenser that is easy to use.

[0004]

As a result of intensive studies to solve the above problems, the present inventors have established a degassing port in the dispenser body and sealing the degassing port with a hydrophobic porous body. By doing so, it was found that the dispenser body can be easily filled with water and there is no risk of water leakage, and the present invention has been completed based on this finding. That is, the present invention is (1) a dispenser for a guide wire including a dispenser body formed by forming a tube in an annular shape and a guide wire supply section that communicates with the dispenser body, wherein a liquid supply port and a degassing port are provided, Also provided is a dispenser for a guide wire, characterized in that the degassing port is sealed with a hydrophobic porous body. Further, as a preferred embodiment of the present invention,
(2) First, the pore size of the hydrophobic porous body is 100 μm or less
Dispenser for guide wire according to item (1), (3)
The guide wire dispenser according to item (1) or (2), in which the liquid supply port is a luer lock or a luer taper, (4) the inner diameter of the guide wire supply port is almost the same as the outer diameter of the guide wire. A dispenser for a guide wire according to item (1), item (2) or item (3), which is
(5) The dispenser main body is capable of seeing through the inside of the tube, and the guide wire dispenser according to item (1), (2), (3) or (4), and (6) hydrophilic The guide wire dispenser according to item (1), item (2), item (3), item (4) or item (5), which is used for a guide wire coated with a hydrophilic coating. be able to.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 4 is a perspective view of one embodiment of the guide wire dispenser of the present invention. The guide wire dispenser of the present invention includes a guide wire dispenser main body 7 formed by forming a tube in an annular shape, and a tubular guide wire supply unit 8 communicating with the dispenser main body. The size of the dispenser body of the guide wire dispenser of the present invention is not particularly limited and can be appropriately selected according to the diameter and length of the guide wire to be used, for example, the inner diameter is 0.8 to 7 mm, the outer The diameter can be 1-8 mm. The material of the dispenser body is not particularly limited, and for example, polyethylene, polypropylene, polystyrene, polyester, nylon, fluororesin, polycarbonate, etc. can be used, but a transparent material is preferable. When the dispenser body is transparent, it is possible to observe the remaining state of air when water is injected from the outside. The inner surface of the dispenser body is preferably in a rough state having fine irregularities rather than being smooth. If the inner surface of the dispenser body is too smooth, the guide wire with a hydrophilic coating may stick to it and make it difficult to move. The guide wire dispenser of the present invention includes a tubular guide wire supply unit 8 that communicates with the dispenser body. The guide wire supply section
The tip has a guide wire supply port 3 and the other end communicates with the dispenser body. The inner diameter of the guide wire supply port is preferably substantially the same as the outer diameter of the guide wire used. By making the inner diameter of the guide wire supply port and the outer diameter of the guide wire to be used almost the same, both can be adapted to move the guide wire smoothly and prevent water leakage from the guide wire supply port. be able to.

The guide wire dispenser of the present invention has a liquid supply port 5 in the dispenser body. Water can be injected into the dispenser body via the liquid supply port, and the liquid supply port can be sealed when the water is not injected. After accommodating the guide wire with the hydrophilic coating in the dispenser body, water is injected from the liquid supply port to immerse the guide wire in the water. The water used is preferably physiological saline, distilled water, sterile water, or the like. By configuring the dispenser body with a transparent material, it is possible to observe the injection state of water from the outside and prevent air from remaining. The liquid supply port is preferably a luer lock or a luer taper. By making the liquid supply port a luer lock or a luer taper, water can be easily injected using a syringe. After injecting water into the dispenser body, the liquid supply port is closed and sealed. There is no particular limitation on the method of sealing the liquid supply port. For example, the liquid supply port can be closed with a stopper, a stopcock can be attached to the liquid supply port, or a check valve can be provided at the liquid supply port. You can The guide wire dispenser of the present invention,
The dispenser body has a degassing port 9, and the degassing port is sealed with a hydrophobic porous body. The size of the deaeration port is not particularly limited and can be appropriately selected according to the size of the dispenser body, and usually the diameter is preferably 0.1 to 5 mm. When water is injected into the dispenser body, the air in the dispenser body is removed through the degassing port, but the hydrophobic porous body that seals the degassing port allows air to pass but does not allow water to pass. There is no risk of water leaking from the degassing port after it is removed. In the dispenser for a guide wire of the present invention, the hydrophobic porous body that seals the deaeration port is, for example, a porous membrane in which pores are formed in a membrane of a hydrophobic material or a fine texture obtained by weaving hydrophobic fibers. A woven fabric or the like can be used, or a degassing port can be provided by making the dispenser body itself from a hydrophobic material and opening pores in the dispenser body with a laser, a neutron beam, or the like. Examples of such a hydrophobic material include fluororesins such as polytetrafluoroethylene, tetrafluoroethylene-hexafluoropropylene copolymer, and polyvinylidene fluoride. The pore size of the hydrophobic porous body is not particularly limited as long as water is supported by surface tension and does not pass through, but is preferably 100 μm or less, and more preferably 0.02 to 2 μm. In the guide wire dispenser of the present invention, the number of deaeration ports is not particularly limited, and one deaeration port can be provided, or a plurality of deaeration ports can be provided.

The guide wire dispenser of the present invention can be particularly preferably used for a guide wire having a hydrophilic coating. The guide wire is often used for percutaneous transluminal coronary artery dilatation (PTCA) or microcatheter and has an outer diameter of 0.018 to 0.06 inch, and for general use, the outer diameter is 0.018. ~ 0.
Often 5 inches are used. The length of the guide wire is usually 10 to 400 cm in many cases. The guide wire is usually composed of a core wire made of a metal material such as stainless steel, iron, nickel-titanium alloy, or tungsten alloy, polytetrafluoroethylene,
Fluorine-based polymers such as tetrafluoroethylene-hexafluoropropylene copolymer, polyester, polyamide, polypropylene, those coated with a polymer such as rubber, the surface thereof further polyvinyl alcohol,
Those coated with a hydrophilic polymer such as a maleic acid-based polymer, polyhydroxyethyl methacrylate, or polyvinylpyrrolidone are preferably used. The guide wire dispenser of the present invention is provided with a liquid supply port and a degassing port, and by sealing the degassing port with a hydrophobic porous body, good air escape due to the hydrophobic porous body is achieved. And because of the water-tight sealing property, only the air can be selectively released, and the water injection property and water retention property are excellent, and the characteristics of the guide wire with hydrophilic coating are more than 12%. You can make the most of it. By using the guide wire dispenser of the present invention, the doctor does not use any additional equipment other than the syringe, and does not risk exposing the sterilized guide wire stored in the dispenser to the dirty area, which is a hassle. It is possible to use a guide wire coated with a hydrophilic coating simply, safely, and cleanly without applying stress.

[0008]

According to the dispenser for a guide wire of the present invention, a guide wire coated with a hydrophilic coating can be stored, water can be easily injected, and the guide wire is not leaked. It can be used easily, safely and cleanly without exposing it to the dirty area.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of a conventional guide wire dispenser.

FIG. 2 is an explanatory view showing a state of a guide wire immersed in water.

FIG. 3 is a perspective view of another aspect of the conventional guide wire dispenser.

FIG. 4 is a perspective view of one embodiment of the dispenser for a guide wire of the present invention.

[Explanation of symbols]

 1 Guide wire 2 Main body tube 3 Guide wire supply port 4 Straightener 5 Liquid supply port 6 Pu's tray 7 Dispenser body 8 Guide wire supply part 9 Degassing port

Claims (1)

[Claims] 1. A dispenser for a guide wire, comprising a dispenser main body formed by forming a tube in an annular shape and a guide wire supply portion communicating with the dispenser main body, wherein a liquid supply port and a deaeration port are provided and a deaeration port is provided. Is sealed with a hydrophobic porous body, a dispenser for a guide wire.