JP2005160952A - Guide wire introduction auxiliary implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a guide wire introduction auxiliary implement which can easily introduce a base end of a guide wire of which the distal end is inserted/placed into an organism into the distal opening of a medical tube, and is extremely easy to be removed from the medical tube. <P>SOLUTION: The guide wire introduction auxiliary implement 1 is used for inserting a base end 101 of the guide wire 100 into the distal opening of a medical tube 200, and has a plate-like main body 2. The main body 2 is equipped with a tube-holding groove 3 and a guide groove 4 which is positioned on the distal end of the tube-holding groove 3 and introduces the base end 101 of the guide wire 100 into the distal opening of the medical tube 200 held by the tube-holding groove 3. A distal end 202 of the medical tube 200, which is held by the tube-holding groove 3, is removed from the groove 3 by transforming the main body 2 for width of the groove 3 to be extended. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a guide wire introduction aid used when a proximal end portion of a guide wire having a distal end side inserted into a living body is inserted into a distal end opening portion of a medical tube.

  In recent years, catheter treatment and diagnosis have been widely used. The catheter has one or a plurality of lumens (lumens), and is used for injecting a drug solution into the patient's body or draining the fluid outside the body. There are various types depending on the application location (organ) and application. When such a catheter is inserted into the body, a guide wire may be used to introduce the catheter tip appropriately to the target site. Guidewires are easier to operate than complex catheters at complex bends and branches in body cavities such as blood vessels, and can be easily and safely introduced to the target site. After placing the guidewire, the catheter can be used as a guidewire. In general, the usage is to introduce it to the target site. This series of operations is the same for the dilator used to expand the insertion portion.

  Here, the surgeon must perform an operation of passing a catheter (hereinafter, the same applies to a dilator) from the distal end of the guide wire introduced into the target site. At this time, when the catheter and the guide wire are very thin (for example, when a 0.018-inch guide wire is used), the operation may be very difficult and troublesome, and may take time. Especially in the field of lifesaving emergency medicine, spending time on such work may delay the next treatment for the patient, and the work of passing the guide wire through the catheter is performed as quickly as possible. It is desirable. In view of such problems, the invention described in Japanese Patent Application Laid-Open No. 2000-84089 (Patent Document 1) proposes a guide wire introduction assisting tool that covers the distal end of the catheter. By using this introduction aid, a thin guide wire can be smoothly introduced into the catheter tip.

  However, since the invention described in Patent Document 1 has a lumen through which the guide wire is inserted, after the guide wire proximal end is inserted into the distal end of the catheter, another assisting tool is removed by the detaching means. Work is necessary. Further, in the operation of removing the auxiliary tool, the operator needs to be careful or hold it so that the catheter into which the guide wire is introduced does not fall out, and the operator's operation is also complicated. .

  Moreover, in the guide wire introduction | transduction auxiliary tool described in Unexamined-Japanese-Patent No. 2003-154011, (patent document 2), although said problem is solved, until an operator passes a guide wire, The catheter and the guide wire introduction tool had to be grasped with care at all times, and it was somewhat difficult to use.

JP 2000-84089 A JP 2003-154011 A

  The object of the present invention is to easily introduce the proximal end portion of the guide wire whose distal end side is inserted and placed in the living body into the distal end opening portion of the medical tube and to remove it from the medical tube. It is to provide a guide wire introduction aid.

Such an object is achieved by the present inventions (1) to (7) below.
(1) A guide wire introduction aid used when the proximal end portion of the guide wire is inserted into the distal end opening of the medical tube,
It has a plate-shaped main body,
In the main body portion, a tube holding groove for storing and holding the distal end portion of the medical tube, and a distal end opening of the medical tube located in the distal end side of the tube holding groove and held in the tube holding groove A guide groove for guiding the proximal end portion of the guide wire to the portion is formed,
From the state where the tip of the medical tube is held in the tube holding groove, the width of the tube holding groove is widened so that the tip of the medical tube is detached from the tube holding groove. A guide wire introduction aid characterized by being configured to be deformable.

  (2) The guide wire introduction assisting device according to (1), wherein the tube holding groove has a protruding portion on a side wall of a portion shallower than a depth where a center of the held medical tube is located.

  (3) The guide wire introduction aid according to (1) or (2), wherein at least the vicinity of the tube holding groove is made of an elastic material.

  (4) The guide wire introduction aid according to the above (1) or (2), the entirety of which is made of an elastic material.

  (5) The guide wire introduction aid according to (3) or (4), wherein the elastic material has a Shore hardness of 70A to 65D.

  (6) The guide according to any one of (1) to (5), wherein the guide has a plate-like finger contact portion that is formed to protrude from the back side of the tube holding groove and is perpendicular to the main body portion and parallel to the tube holding groove. Wire introduction aid.

  (7) The guide wire introduction aid according to any one of (1) to (6), wherein the main body portion has a protrusion formed on the back side of the tube holding groove and the guide groove.

  According to the guide wire introducing device of the present invention, when inserting the proximal end portion of the guide wire whose distal end side is inserted and placed in the living body into the distal end opening portion of the medical tube, it can be performed smoothly and easily. This effect can be achieved even if the guide wire and the medical tube have a small diameter.

  In addition, after inserting the proximal end portion of the guide wire into the distal end opening of the medical tube, the guide wire introducing device is very quickly and smoothly removed from the medical tube by deforming the main body portion of the guide wire introducing device. It can be easily removed.

  Therefore, according to the guide wire introduction aid of the present invention, the guide wire insertion operation into the medical tube can be performed easily and quickly, and further, the chance of touching bacteria etc. is reduced, and the patient Can be kept away from the risk of infection. Further, since the removal operation is very simple, the operator's operation is not bothered.

Hereinafter, the guide wire introduction auxiliary tool of the present invention will be described in detail based on a preferred embodiment shown in the accompanying drawings.
1 and FIG. 2 are perspective views showing embodiments of the guide wire introduction aid of the present invention, FIG. 3 is a plan view of the guide wire introduction tool shown in FIGS. 1 and 2, and FIG. 4 is FIG. FIG. 5 is a side view of the guide wire introducing tool shown in FIGS. 1 and 2, and FIG. 6 is a plan view showing a use state of the guide wire introducing tool shown in FIGS. 7 is a cross-sectional view taken along line XX in FIG. 3 in a state where the guide wire is inserted through the medical tube, and FIG. 8 is a deformed main body portion of the guide wire introducing tool from the state shown in FIG. It is sectional drawing which shows a state.

  The guide wire introducing tool 1 shown in these drawings is the base end portion of the guide wire 100 when the medical tube 200 is inserted along the guide wire 100 after the guide wire 100 is inserted and placed in the living body. It is an auxiliary tool that assists the user to easily insert 101 into the distal end opening of the medical tube 200.

  This guide wire introduction tool 1 can be used when inserting a catheter, and also when inserting a dilator used to expand a skin puncture site (puncture site) before catheter insertion. Can do. That is, the medical tube 200 in the present invention includes not only a catheter but also a dilator and the like.

  The guide wire introduction assisting device of the present invention can be used not only when inserting a single lumen catheter but also when inserting a medical tube 200 having a plurality of lumens such as a double lumen catheter.

  Moreover, since the guide wire introduction tool 1 of the present invention can be easily detached from the medical tube 200 by elastic deformation that can return to the original shape as described later, it can be used repeatedly. The guide wire introduction tool 1 can be used when inserting the catheter, and then the same guide wire introduction tool 1 can be reused when the dilator is removed and the catheter is inserted. Therefore, the number of use can be reduced and it is economical.

  As shown in FIG. 1, the guide wire introduction assisting tool 1 has a substantially flat plate-like main body 2. The shape may be any shape, but in order to make the directionality in operation easy to understand, a shape that is long in the direction connecting the distal end and the proximal end and short in the direction orthogonal thereto is desirable, for example, a rectangle. . Thereby, the directionality in operation becomes clear, and it becomes easy to hold | grip at the time of operation, and operativity improves.

  Wide portions 21 are provided on both sides of the base end portion of the main body 2. Thereby, the width | variety of the part of the base end side of the main-body part 2 is wider than the part of the front end side. By providing the widened portion 21, it is possible to make the deformation operation of the main body 2 described later easier.

  Although it does not specifically limit as a magnitude | size of the main-body part 2, Considering an operator's operativity, the length from a front-end | tip to a base end becomes like this. Preferably it is 20-70 mm, More preferably, it is 25-60 mm, More preferably, it is 30 The width (average width) of the main body 2 is preferably 8 to 35 mm, more preferably 12 to 30 mm, and still more preferably 15 to 25 mm. If the thickness (average thickness) of the main body 2 is too thin, it is likely to be deformed more than necessary, and if it is too thick, there is a problem of resin sink when the main body 2 is manufactured by injection molding. Therefore, the thickness is preferably 0.5 to 2 mm, more preferably about 0.8 to 1.5 mm. If it is the main-body part 2 of the magnitude | size mentioned above, an operator's operativity will not be prevented.

  As shown in FIGS. 1 and 3, a tube holding groove 3 that houses and holds the distal end portion 202 of the medical tube 200 is formed on the front side of the main body portion 2.

  In the illustrated configuration, the tube holding groove 3 is formed up to the base end surface of the main body 2. That is, the tube holding groove 3 forms a proximal end opening 32 on the proximal end surface of the main body 2. In the present invention, the tube holding groove 3 may not reach the base end surface of the main body 2, but it is preferable that the tube holding groove 3 reaches as in the present embodiment. Thereby, when accommodating the front-end | tip part 202 of the medical tube 200 in the tube holding groove 3, while being able to insert the medical tube 200 easily from the base end opening 32, the magnitude | size of the main-body part 2 can be made small, The operability can be improved.

  As shown in FIG. 4, the tube holding groove 3 in the present embodiment has a substantially circular cross-sectional shape, and projecting portions 31 projecting inward are formed on both side walls (inner walls). Has been. As shown in FIG. 7, when the medical tube 200 is held in the tube holding groove 3, the protruding portion 31 is located in a portion shallower than the depth at which the center of the medical tube 200 is located. Since the gap between the two protruding portions 31 is smaller than the outer diameter of the medical tube 200, the two protruding portions 31 can prevent the medical tube 200 from being detached and can be reliably held.

  The inner diameter of the tube holding groove 3 may be slightly smaller than the outer diameter of the medical tube 200. Thereby, the medical tube 200 fits into the tube holding groove 3 and can be fixed more reliably. Further, by setting the distal end portion 33 of the tube holding groove 3 to be slightly smaller than the outer diameter of the distal end 201 of the medical tube 200, the distal end 201 of the medical tube 200 is brought into contact with the medical tube 200. The tip 201 can be reliably positioned and fixed.

  In addition, the cross-sectional shape of the tube holding groove 3 is not limited to the illustrated configuration, and may be, for example, a U-shape.

  Further, the tube holding groove 3 may have a constant width along the longitudinal direction, but may be configured such that the width gradually increases from the distal end portion 33 toward the proximal end opening 32. The depth of the tube holding groove 3 may be constant along the longitudinal direction, but may be configured so as to gradually become deeper from the distal end portion 33 toward the proximal end opening 32.

  As shown in FIGS. 1 and 3, a guide groove that guides the proximal end portion 101 of the guide wire 100 to the distal end opening of the medical tube 200 held in the tube holding groove 3 is provided on the distal end side of the tube holding groove 3. 4 are continuously formed.

  The guide groove 4 is formed in a narrow width portion 41 having a narrow width continuously extending from the distal end portion 33 of the tube holding groove 3 in the distal direction, and on the distal end side of the narrow portion 41, and the width gradually increases in the distal direction. A width gradually increasing portion 42 is formed.

  In the illustrated configuration, the guide groove 41 (width gradually increasing portion 42) is formed up to the distal end surface of the main body portion 2, and the distal end opening 43 is formed in the distal end surface of the main body portion 2. In the present invention, the guide groove 41 may not reach the distal end surface of the main body 2, but it is preferable that the guide groove 41 reaches as in the present embodiment. Thereby, the base end portion 101 of the guide wire 100 can be easily inserted into the guide groove 41 from the distal end opening 43, the size of the main body portion 2 can be reduced, and the operability can be improved.

  Since the width | variety of the front-end | tip (front-end opening 43) of the width increase part 42 is wide, even if the guide wire 100 is a thing with a small diameter, the base end part 101 can be inserted easily (FIG. 6). reference). The proximal end portion 101 of the inserted guide wire 100 is guided by the width gradually increasing portion 42 and inserted into the narrow portion 41.

  The narrow portion 41 has a relatively narrow width through which the guide wire 100 can be inserted and does not bend. Although the width | variety of the narrow part 41 is not specifically limited, It is preferable that it is 0.3-1.5 mm, and it is more preferable that it is 0.4-1 mm.

  Further, the length of the guide groove 4 is preferably 3 to 30 mm, more preferably 5 to 25 mm, and still more preferably about 7 to 20 mm. By comprising in this way, the base end part 101 of the guide wire 100 can be introduce | transduced straight to the medical tube 200, and introduction operation can be performed easily.

  In such a guide wire introducing tool 1, the main body 2 is made of an elastic material and is deformable (elastically deformable). Then, the distal end portion 202 of the medical tube 200 is deformed (curved) from the state where the distal end portion 202 of the medical tube 200 is held in the tube holding groove 3 (the state shown in FIG. 7). It can be easily removed from the tube holding groove 3.

  That is, when the main body 2 is deformed from the state shown in FIG. 7 so that the formation surface side of the tube holding groove 3 is convex, the width of the tube holding groove 3 is widened as shown in FIG. The holding state is released, and the medical tube 200 can be easily removed.

  Further, by lifting the distal end portion 202 of the medical tube 200 in the opening direction of the tube holding groove 3 from the state where the distal end portion 202 of the medical tube 200 is held in the tube holding groove 3 (the state shown in FIG. 7), The distal end portion 202 of the medical tube 200 may be removed from the tube holding groove 3 while deforming (curving) the main body portion 2.

  The elastic material constituting the main body 2 is not particularly limited, but, for example, a polyolefin-based elastomer such as polybutadiene, polyethylene elastomer, and polypropylene elastomer, a silicone rubber, a polyester elastomer, a polyamide elastomer, and the like that can be injection-molded and heat-processed are usable. Among these, polybutadiene is more preferable. Further, these materials may be colored by appropriately adding pigments.

  In addition, from the viewpoint of expressing appropriate flexibility (easiness of deformation) of the main body 2, the hardness of the elastic material constituting the main body 2 is preferably 70A to 65D, and 75A to 98A. It is more preferable that When the Shore hardness is 70 A or less, depending on conditions such as the thickness of the main body 2, the main body 2 is too flexible and it becomes difficult to hold the medical tube 200, which may affect the convenience of the surgeon. is there. When the Shore hardness is 65D or more, depending on conditions such as the thickness of the main body 2, the main body 2 may be too hard and it may be difficult to remove the medical tube 200.

  In the present invention, at least the portion near the tube holding groove 3 of the main body portion 2 may be made of the elastic material as described above, but the entire guide wire introduction aid 1 is made of the elastic material. More preferred. As a result, the operation of removing the medical tube 200 can be performed more easily, and the manufacturing can be easily performed.

  Moreover, when manufacturing the guide wire introduction auxiliary tool 1 of the present invention, in the case of using the elastic material as described above, it can be easily manufactured by a known method such as injection molding or sheet pressing. Is possible.

  As shown in FIGS. 2 and 5, in the vicinity of the base end on the back side of the main body portion 2, a plate-like finger is formed protruding from the back side of the tube holding groove 3 and perpendicular to the main body portion 2 and parallel to the tube holding groove 3. A contact portion 5 is provided. The operator can easily and reliably grasp the guide wire introduction assisting tool 1 by placing an index finger on the end surface 51 of the finger rest part 5 and placing a thumb on the front side of the main body part 2. Moreover, as shown in FIG. 8, since the finger rest part 5 is formed in the position and shape as described above, the deformation of the main body part 2 is not hindered.

  Further, on the distal end side of the finger rest portion 5 in the main body portion 2, that is, on the back side of the tube holding groove 3 and the guide groove 4, a ridge 6 that functions as a reinforcing rib is formed. Thereby, even if it is a case where the thickness of the main-body part 2 is comparatively thin, the intensity | strength of the part of the tube holding groove 3 and the guide groove 4 is securable.

Next, an example of how to use the guide wire introduction assisting tool 1 will be described.
[1] The surgeon inserts the medical tube 200 from the proximal end opening 32 of the tube holding groove 3, butts the distal end 201 of the medical tube 200 against the distal end portion 33 of the tube holding groove 3, The tube is held in the tube holding groove 3 (see FIG. 6). At this time, the medical tube 200 may be inserted while the main body 2 is curved in a direction in which the width of the tube holding groove 3 is increased.

  [2] The proximal end portion 101 of the guide wire 100 whose distal end side is inserted and detained in the living body is inserted into the gradually increasing width portion 42 of the guide groove 4 from the distal end opening 43 and advanced in the proximal direction. Then, the proximal end portion 101 of the guide wire 100 passes through the narrow portion 41 and is smoothly and easily introduced into the distal end opening of the medical tube 200, and the guide wire 100 is inserted into the lumen of the medical tube 200. (See FIG. 7).

[3] When the main body 2 is deformed as shown in FIG. 8, the tube holding groove 3 is widened to release the holding state, and the medical tube 200 inserted through the guide wire 100 is a guide wire introduction aid. 1 can be easily removed. At this time, the medical tube 200 inserted through the guide wire 100 may be lifted in the opening direction of the tube holding groove 3 to remove the medical tube 200 from the guide wire introduction aid 1 while curving the main body 2. .
After removing the guide wire introduction assisting tool 1, the medical tube 200 can be inserted into the living body along the guide wire 100.

  As mentioned above, although guide wire introduction auxiliary tool of the present invention was described about an illustrated embodiment, the present invention is not limited to this, and each part which constitutes a guide wire introduction auxiliary tool exhibits the same function. It can be replaced with any configuration obtained. Moreover, arbitrary components may be added.

It is a perspective view showing an embodiment of a guide wire introduction auxiliary tool of the present invention. It is a perspective view showing an embodiment of a guide wire introduction auxiliary tool of the present invention. It is a top view of the guide wire introduction tool shown in FIG. 1 and FIG. It is the XX sectional view taken on the line in FIG. It is a side view of the guide wire introduction tool shown in FIG. 1 and FIG. It is a top view which shows the use condition of the guide wire introduction tool shown in FIG. 1 and FIG. It is sectional drawing in the XX line in FIG. 3 in the state which penetrated the guide wire to the medical tube. It is sectional drawing which shows the state which deform | transformed the main-body part of the guide wire introduction tool from the state shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Guide wire introduction | transduction assistance tool 2 Main-body part 21 Wide part 3 Tube holding groove 31 Protrusion part 32 Base end opening 33 Tip part 4 Guide groove 41 Narrow part 42 Width increase part 43 Tip opening 5 Finger pad part 51 End surface 100 Guide wire 101 Proximal end 200 Medical tube 201 Tip 202 Tip

Claims (7)

A guide wire introduction aid used when inserting the proximal end portion of the guide wire into the distal end opening of the medical tube,
It has a plate-shaped main body,
In the main body portion, a tube holding groove for storing and holding the distal end portion of the medical tube, and a distal end opening of the medical tube located in the distal end side of the tube holding groove and held in the tube holding groove A guide groove for guiding the proximal end portion of the guide wire to the portion is formed,
From the state where the tip of the medical tube is held in the tube holding groove, the width of the tube holding groove is widened so that the tip of the medical tube is detached from the tube holding groove. A guide wire introduction aid characterized by being configured to be deformable.   The guide wire introduction auxiliary tool according to claim 1, wherein the tube holding groove has a protrusion on a side wall of a portion shallower than a depth where a center of the held medical tube is located.   The guide wire introduction auxiliary tool according to claim 1 or 2, wherein at least the vicinity of the tube holding groove is made of an elastic material.   The guide wire introduction aid according to claim 1 or 2, wherein the whole is made of an elastic material.   The guide wire introduction aid according to claim 3 or 4, wherein the elastic material has a Shore hardness of 70A to 65D.   The guide wire introduction auxiliary tool according to any one of claims 1 to 5, further comprising a plate-like finger contact portion that is formed to protrude from a back side of the tube holding groove and is perpendicular to the main body portion and parallel to the tube holding groove.   The said main-body part is a guide wire introduction assistance tool in any one of Claim 1 thru | or 6 which has the protruding item | line formed in the back side of the said tube holding groove and the said guide groove.

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