JP2003154011A - Guide wire introduction auxiliary implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guide wire introduction auxiliary implement which can easily and simply perform the introducing operation of a fine guide wire inserted into an organism into a catheter. SOLUTION: The guide wire introduction auxiliary implement comprises a groove 3 having a continuous opening 4 extended from a distal end to a base end, a guide wire base end introducing part 7 provided near the distal end (a) of the groove 3 and a catheter distal end fixing part 6 provided near the base end (b) of the groove 3. The introducing part 7 is fixed to the fixing part 6, the wire is introduced into the catheter, and then the catheter and the wire can be removed from the opening 4 of the groove.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention makes it easy to introduce the distal end of the guide wire into the proximal end portion of the catheter when inserting the catheter into the living body using the guide wire, thereby facilitating the operator's catheter insertion operation. The present invention relates to an assisting tool for performing quickly.

[0002]

2. Description of the Related Art In recent years, treatment and diagnosis using a catheter have been widely used. The catheter has one or a plurality of lumens (lumen), and is used for injecting a medicinal solution into the patient's body or for draining the solution out of the body.
In addition, there are various types depending on the application site (organ) and application. When inserting such a catheter into the body, a guide wire may be used in order to properly introduce the catheter tip into a target site. The guide wire is
It is easier to operate than a catheter and can be easily and safely introduced to the target site at complicated bends and bifurcations in body cavities such as blood vessels, and the purpose is to guide the catheter along the guide wire after placement of the guide wire. It is generally used by introducing it into the site.

Here, the operator must perform an operation of passing a catheter from the distal end portion to the proximal end of the guide wire introduced into the target site. At this time, when the catheter and the guide wire are both very thin (for example, when a 0.018 inch guide wire is used), the work may be very difficult and troublesome and may take time. Especially in the field of emergency medical care, spending time on such work may delay the next treatment for the patient, and the work of passing the guide wire through the catheter should be performed as quickly as possible. Is desirable. In view of such a problem, the invention described in Japanese Patent Laid-Open No. 2000-84089 proposes a guide wire introduction assisting tool that covers the distal end of a catheter. By using this introduction assisting tool, a thin guide wire can be smoothly introduced into the catheter tip.

[0004]

However, the invention described in the above-mentioned Japanese Patent Laid-Open No. 2000-84089 has the following problems.
Since it has an inner cavity for inserting the guide wire, it is necessary to perform another work such as removing this auxiliary tool by the detaching means after inserting the guide wire proximal end into the catheter tip. Further, in the work of removing the auxiliary tool, the operator needs to be careful or hold the catheter into which the guide wire has been introduced so as not to fall out, and the work of the operator is also complicated.

In order to solve the above problems, the present invention introduces a guide wire into a catheter in which the guide wire inserted into the living body can be easily introduced into the catheter and can be removed very easily. It is intended to provide auxiliary equipment.

[0006]

The above object can be achieved by the present invention described below.

(1) The present invention relates to a guide wire introduction assisting tool for introducing a base end of a guide wire into a distal end opening of a catheter, wherein a plate-shaped main body having a distal end and a proximal end is provided on the main body, and A groove extending from the distal end to the proximal end, wherein the groove is a guide wire proximal end introducing portion for introducing the proximal end of the guide wire near the distal end, and the distal end of the catheter is detachably fixed near the proximal end. A catheter tip fixing portion is provided, and in the catheter tip fixing portion, the width of the groove portion gradually expands in the proximal direction,
In addition, the guide wire introduction assisting tool for a catheter is characterized in that the depth of the groove is gradually increased in the proximal direction.

It is preferable that the groove has a continuous opening extending from the tip end to the base end.
Further, examples of the shape of the groove portion include a concave groove, a U groove and a V groove.

(2) In the present invention, the tip of the catheter is fixed to the catheter tip fixing portion, the guide wire is introduced from the guide wire base end introducing portion into the catheter, and then the opening of the groove portion is used. The catheter and the guide wire can be removed (1)
The guidewire introduction assisting tool according to 1.

(3) The present invention is the guide wire introduction assisting tool according to any one of (1) and (2), wherein the catheter tip fixing portion fits the tip of the catheter into the groove.

(4) The present invention according to the above (1) to (3), characterized in that the width of the guide wire introducing portion of the groove portion is 0.4 to 1.0 mm. It is the described guide wire introduction aid.

(5) The present invention is characterized in that the guide wire introduction portion of the groove portion is configured to have a length of 3 to 30 mm. It is a wire introduction aid.

In the present invention, the term "catheter" includes not only a catheter having a lumen but also a catheter having a hollow stylet inserted in the lumen.
When the catheter has a hollow stylet inserted in its inner cavity, the above-mentioned catheter tip includes the stylet tip.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1) FIG. 1 is an overall perspective view of a guide wire introduction aid 1 according to the present invention, FIG. 2 is a top view of the guide wire introduction aid 1, and FIG. 3 is a guide wire introduction aid. 1 shows a sectional view of FIG. The guide wire introduction assisting tool 1 is composed of a plate-shaped main body portion 2 and a concave groove portion 3 having a continuous opening 4 extending from the front end a to the base end b of the main body portion 2.

The main body 2 has a substantially flat plate-like structure. Any shape can be used,
A shape such as a rectangle is desirable in order to make it easy to understand the directionality in operation. Further, by providing the constriction 9, the directionality in the operation becomes clearer, and it becomes easier to grip during the operation, thus improving the operability.

As for the size of the main body 2, the length from the distal end a to the proximal end b is 20 to 70 m in consideration of the operability of the operator.
m, preferably 25 to 60 mm, more preferably 30
Is about 50 mm. The width is 8 to 35 mm, more preferably 12 to 30 mm, further preferably 15 to 25 mm. If the thickness of the main body 2 is too thin, the main body is likely to be deformed, and if it is too thick, a problem such as sinking of resin may occur when the main body 2 is manufactured by injection molding. Therefore, it is preferable that the thickness is 0.5 to 2 mm, more preferably 0.8 to 1.5 mm. With the body portion 2 having the size described above, the operability of the operator is not hindered.

The material forming the main body 2 is an olefin polymer material such as polyethylene or polypropylene,
Examples thereof include those that can be injection-molded and heat-processed, such as polymer materials such as polycarbonate, polyester, and polyamide, and metals such as stainless steel. Further, in the case of a polymer material, a pigment may be added appropriately for coloring. Note that the material is not limited to those listed here, but it is desirable that the material is a hard material to some extent so as not to be easily deformed.

The recessed groove portion 3 is provided with a guide wire proximal end introducing portion 7 for introducing the proximal end 15 of the guide wire 14 and a catheter inserting portion 5 for inserting the catheter 12 from the distal end 13. Further, the concave groove portion 3 is provided with a catheter tip fixing portion 6 capable of fixing the catheter tip 13 from the catheter insertion portion 5 in the tip a direction.

Here, the method of fixing the catheter tip 13 to the catheter tip fixing portion 6 is performed by fitting. At this time, the tip end portion 10 of the catheter tip end fixing portion 6 is set to be slightly smaller than the outermost diameter of the catheter, and the catheter tip end 13 is made to abut to fix and fix the catheter tip end position. In such a case, the shape near the tip 10 of the catheter tip fixing portion is an inverted Ω type (a shape in which the letter Ω is inverted toward the upper surface,
That is, the upper surface side is open. ) And the catheter tip 1
It is good to make 3 fit firmly.

The guide wire proximal end introducing portion 7 is formed to have a shape that gradually widens toward the distal end a as shown in the drawing to facilitate insertion of the guide wire, and a guide wire proximal end introducing opening 8 is provided. Is desirable. In addition, the catheter insertion part 5 can fit the main body of the inserted catheter 12.

If the groove 3 has a continuous opening 4 and has a length that does not hinder the introduction of the guide wire 14 or the insertion of the catheter 12, it is not necessary to specify the length. Further, the end of the groove 3 (catheter insertion portion 5
Also, the opening forming the guide wire proximal end introducing portion 7 does not have to reach the edge of the main body 2. However, considering the operability of the operator, it is better not to make the main body portion 2 too large. Therefore, the concave groove portion 3 has the minimum necessary length and is formed over the entire length of the main body portion 2. Is desirable.

The width of the guide wire base end introducing portion 7 of the concave groove portion 3 is preferably narrow so that the guide wire 14 can be inserted thereinto and is not bent. Specifically, 0.3 to 1 0.5 mm, more preferably 0.4 to
It is desirable that the length is 1 mm and the length is 3 to 30 mm, preferably 5 to 25, and more preferably 7 to 20 mm. With this configuration, the proximal end 15 of the guide wire 14 can be straightly introduced into the catheter, and the introduction operation can be easily performed.

As shown in FIG. 2, the catheter tip fixing portion 6 is gradually widened from its tip portion 10 to its base portion 11. The bottom surface may be flat, but as shown in FIG. 3, it is desirable that the bottom surface is gradually deepened from the tip end portion 10 toward the base end portion 11. By inserting the catheter tip 13 here, the catheter 12 can be detachably fixed to the main body 2.

The shape and size of the catheter tip fixing portion 6 can be appropriately set according to the shape of the catheter tip. In particular, in order to prevent the center axis of the guide wire 14 and the center axis of the catheter 12 from being displaced as the inclination in the depth direction, for example, the thickness of the catheter is 200 μm.
When the taper portion of the catheter tip 13 has a length of 5 mm, the length is 5 mm and the depth is about 200 μm. By providing such an inclination, the guide wire 14 can be easily introduced into the catheter.

In manufacturing the guide wire introduction assisting tool according to the present invention, when the above-mentioned polymer material is used, injection molding, press working of a sheet-like material, etc.
It can be easily produced by a known method.
When a material such as metal is used, it can be easily manufactured by pressing.

Next, how to use the guide wire introduction assisting tool 1 will be described. The guide wire introduction assisting tool 1 can be used by the following procedures (1) to (3). Figure 4A
3B and 3B show partial cross-sectional views of the guide wire introduction assisting tool 1 before and after introducing the guide wire 14 into the catheter 12.

The operator inserts the catheter 12 from the catheter insertion portion 5 of the guide wire introduction assisting tool 1 to fix the catheter tip 13 to the catheter tip fixing portion 6.

The proximal end 15 of the guide wire 14 having the distal end inserted in the living body is introduced into the guide wire introduction assisting tool 1 from the guide wire proximal end introducing portion 7 (FIG. 4 (A)).
Further, the guide wire 14 is advanced in the direction of the proximal end b and introduced into the catheter 12 (FIG. 4 (B)).

The catheter 12 and the guide wire 14 are removed from the guide wire introduction assisting tool 1 through the continuous opening 4 of the concave groove portion 3 while releasing the fitting between the catheter tip 13 and the catheter tip fixing portion 6. Then, the catheter 12 can be introduced into the living body through the guide wire 14.

(Second Embodiment) FIG. 5 is a perspective view of the entire guide wire introduction assisting tool 16 according to the present invention. The guide wire introduction aid 16 is a mark 17 for making the introduction direction of the catheter into the guide wire easier to understand.
The guide wire introduction assisting tool 1 has the same configuration as that of the guide wire introduction assisting tool 1 of the first embodiment described above except that is provided. Mark 17
By providing, the insertion direction of the catheter can be easily identified. In addition, the form of the marking may be any form as long as it fulfills the functions described above.

(Third Embodiment) FIG. 6 is a perspective view of the entire guide wire introduction assisting tool 18 according to the present invention. The guide wire introduction assisting tool 18 has the same configuration as the guide wire introduction assisting tool 1 of the first embodiment described above except that the covering portion 19 is provided via the hinge 20. By placing the covering portion 19 side by side, the tip of the catheter can be appropriately gripped.

Although not shown, when the concave groove portion 3 has such a depth that the catheter 12 can enter deeper than the opening surface of the opening 4, the projection is provided on the cover portion so that the catheter 12 can be suppressed. The catheter 12 can be gripped appropriately.

Further, at the time of product shipment, the catheter 12 may be held with the covering portion 19 closed via the hinge 20 so that the operator can immediately introduce the guide wire 14. At this time, an engaging portion may be provided at a pair of hinges 20 to ensure that the cover 19 is closed.

[0035]

As described above, according to the guide wire introduction assisting tool of the present invention, the operation of introducing a thin guide wire into the catheter can be performed easily and easily, and further, the catheter having the guide wire inserted therein can be used as a guide wire. The operation to remove it from the installation aid is not bothersome and not very troublesome.

That is, the guide wire introduction assisting tool of the present invention can easily and quickly insert the guide wire into the catheter, reduce the chance of contact with bacteria, etc., and keep the patient away from the risk of infection. You can Further, since the detaching operation is very simple, the operator's operation is not bothered.

The guide wire introduction assisting tool of the present invention can be used not only when inserting a single lumen catheter, but also when inserting a multiple lumen catheter such as a double lumen catheter.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a guide wire introduction assisting tool 1 according to the present invention.

FIG. 2 is a top view of a guide wire introduction assisting tool 1 according to the present invention.

FIG. 3 is a cross-sectional view of a guide wire introduction assisting tool 1 according to the present invention seen from a side surface.

FIG. 4 is a partial cross-sectional view showing a usage pattern of the guide wire introduction assisting tool 1 according to the present invention.

FIG. 5 is an overall perspective view of a guide wire introduction assisting tool 16 according to the present invention.

FIG. 6 is an overall perspective view of a guide wire introduction assisting tool 18 according to the present invention.

[Explanation of symbols]

1 Guide wire introduction aid 2 body 3 concave groove 4 consecutive openings 5 Catheter insertion part 6 Catheter tip fixing part 7 Guide wire base end introduction part 8 Guide wire base end introduction opening 9 constriction 10 Tip of catheter tip fixing part 11 Base end of catheter tip fixing part 12 catheters 13 catheter tip 14 guide wire 15 Guide wire base 16 Guide wire introduction aid 17 landmarks 18 Guide wire introduction aid 19 Cover 20 hinges

Claims (5)

[Claims] 1. A guide wire introduction assisting tool for introducing a proximal end of a guide wire into a catheter distal end opening, a plate-shaped main body having a distal end and a proximal end, and the main body provided on the main body. A groove extending to the guide wire proximal end introducing portion for introducing the proximal end of the guide wire near the distal end, and a catheter distal end fixing portion where the distal end of the catheter is detachably fixed near the proximal end. The catheter distal end fixing portion is configured such that the width of the groove portion gradually widens in the proximal direction and the depth of the groove portion gradually becomes deeper in the proximal direction. A guide wire introduction aid for the catheter. 2. The catheter is fixed to the catheter tip fixing portion, the guide wire is introduced into the catheter from the guide wire proximal end introducing portion, and then the catheter and the guide wire are opened from the opening of the groove portion. The guide wire introduction aid according to claim 1, wherein the guide wire can be removed. 3. The guide wire introduction assisting tool according to claim 1, wherein the catheter tip fixing portion fits the tip of the catheter into the groove. 4. The guide wire introduction assist according to claim 1, wherein a width of the guide wire introduction portion of the groove portion is 0.4 to 1.0 mm. Ingredient 5. The guide wire introduction assisting tool according to claim 1, wherein the guide wire introducing portion of the groove portion has a length of 3 to 30 mm.