WO2014162613A1

WO2014162613A1 - Medical member

Info

Publication number: WO2014162613A1
Application number: PCT/JP2013/060557
Authority: WO
Inventors: 西田香織; 石井直樹; 柴田秀彬
Original assignee: テルモ株式会社
Priority date: 2013-04-05
Filing date: 2013-04-05
Publication date: 2014-10-09

Abstract

The present invention relates to a medical member formed from a long, narrow body. A geometric pattern is formed upon at least a portion of the lateral wall of the long, narrow body. At least a portion of the geometric pattern is colored with a structural color.

Description

Medical materials

The present invention relates to a medical member composed of a long colored body.

Endoscopes are widely used in pancreaticobiliary procedures (examination and surgery) such as pancreatic duct and bile duct imaging, gallstone removal, and opening of the duodenal papilla. At this time, first, an endoscope is inserted from the subject's mouth to the duodenal papilla which is the entrance of the pancreaticobiliary duct. Next, the catheter is inserted endoscopically into the pancreaticobiliary duct via the treatment instrument insertion channel in the endoscope. Thereafter, an endoscope guide wire (hereinafter sometimes simply referred to as “guide wire”) is inserted into the pancreaticobiliary duct through the catheter, and a part of the guide wire pulled out from the distal end of the endoscope is It is placed in the pancreaticobiliary duct.

After the guide wire is placed, the catheter is withdrawn from the endoscope. Further, a pancreatobiliary treatment instrument (stent, nipple incision knife, quarry basket, etc.) is guided by the guide wire and inserted into the pancreaticobiliary duct through the endoscope. Then, the insertion and withdrawal of the transendoscopic catheter through the guide wire are repeated until the treatment is completed.

In order to perform the above work smoothly, the guide wire is required to be able to easily recognize its movement and position with an endoscope. From this point of view, Japanese Patent Application Laid-Open No. 2011-110392 proposes that the front end portion of the guide wire is provided with a striped pattern having a different color tone so that the front end portion can be easily distinguished from other parts. Yes.

As another medical member for which it is desirable that the position can be easily recognized, a suture is mentioned. For example, when performing surgery using a magnifying glass in endoscopic or laparoscopic surgery, it is necessary to tie a suture in a narrow space, but this work can be performed when the end of the suture can be accurately recognized. This is because it can be easily performed. Therefore, Japanese Patent Application Laid-Open No. 2010-255175 proposes coloring the end portion of the suture thread.

In each technique described in JP2011-110392A and JP2010-255175A, coloring is performed using a dye or a pigment, that is, a colorant. For this reason, the cost increases as much as the colorant is required. Moreover, since a coloring operation is required, it is complicated.

Moreover, although the guide wire that travels in the body may rotate, it is difficult to determine whether or not it is rotating only by adding a stripe pattern or coloring to the front end of the guide wire. .

A general object of the present invention is to provide a medical member that can easily recognize the movement and position of the front end.

The main object of the present invention is to provide a medical member that does not require the use of a colorant for coloring.

Another object of the present invention is to provide a medical member that can determine whether or not it is rotating and that can easily grasp the displacement length (insertion length) in the traveling direction.

According to one embodiment of the present invention, in a medical member comprising a long body,
A geometric pattern is formed on at least a part of the side wall of the elongated body,
A medical member in which at least a part of the geometric pattern is colored with a structural color is provided.

Since the geometric pattern of the front end portion of the long body is colored by the structural color visually recognized based on the structure, coloring agents such as pigments are unnecessary. Therefore, it is not necessary to perform complicated coloring work. For this reason, while being able to reduce the cost required for coloring, a medical member can be obtained efficiently.

Moreover, because of the coloration due to the structural color, there is no concern about peeling or remaining of coloring agents in the body, which is effective in terms of safety.

In addition, according to the geometric pattern, it is easy to know whether or not it is moving in the rotational direction, how much it is displaced in the traveling direction, and its displacement length (insertion length). Based on this, the movement of the long body can be determined in a short time.

Moreover, since the geometric pattern of the front end of the elongated body is colored by the structural color, it is easy to check what kind of movement the front end moves and what position it has reached. It is.

As a preferable example of the geometric pattern, a lattice pattern or a spiral pattern provided along the circumferential direction and the longitudinal direction of the elongated body can be given.

In addition, a geometric pattern can be formed with the color of the side wall of the said elongate body, and the said structural color, for example. In this case, the side wall of the elongated body may be colored with a structural color different from the structural color. Thereby, the visibility at the time of confirming how the long body moves, where the tip is located, and the like is improved.

In addition, it is preferable to provide at least two portions having different structural colors of the geometric pattern along the longitudinal direction on the long body. This is because the insertion length of the medical member into the body of the subject can be easily grasped based on the difference in the structural color.

As a specific example, the first part to the fifth part are provided in this order from the front end side in the long body, and the first part and the fifth part are red, the second part And the fourth part is yellow, and the third part is blue. In this case, red can be recognized as a caution color, yellow as a semi-caution color, and blue as a safety color. Therefore, it is possible to easily determine in a short time whether the insertion length is excessive or insufficient, in other words, whether the insertion length is appropriate.

The color of the side wall of the long body may be, for example, black, white, or silver. In this case, the structural color of the geometric pattern may be any of red, yellow, blue, or green.

Furthermore, two portions where the structural colors of the geometric pattern are different from each other may be provided along the circumferential direction of the elongated body. In this case, when the long body is rotating, a different color is visually recognized depending on the state of rotation. Therefore, it becomes easier to determine whether or not the long body is rotating.

In this case, at least one of the at least two portions may be constituted by a long side wall colored with a structural color.

In the above, a lattice pattern exhibiting a structural color may be engraved on the side wall of the elongated body, or a film on which a lattice pattern exhibiting a structural color is formed may be attached.

A suitable example of such a medical member is an endoscope guide wire. Alternatively, it may be a suture needle or a suture thread.

FIG. 1 is a schematic side view of an essential part of an endoscope guide wire which is a medical member according to a first embodiment of the present invention. FIG. 2 is a schematic side view of an essential part of an endoscope guide wire that is a medical member according to a modification of the first embodiment. FIG. 3 is an enlarged view of a main part of FIG. FIG. 4 is an explanatory diagram showing another example of a geometric pattern. FIG. 5 is an explanatory diagram showing another example of a geometric pattern having a structural color. FIG. 6 is an explanatory diagram showing a color arrangement pattern having a structural color. FIG. 7 is a schematic perspective view of a main part of a suture needle which is a medical member according to the second embodiment of the present invention. FIG. 8: is a principal part schematic side view of the suture thread which is a medical member which concerns on 3rd Embodiment of this invention. FIG. 9 is a schematic side view of the main part of the guide wire when the structural color of the pattern is different in the circulation direction.

Hereinafter, preferred embodiments of the medical member according to the present invention will be described and described in detail with reference to the accompanying drawings.

First, an endoscope guide wire is illustrated as a medical member according to the first embodiment.

FIG. 1 is a schematic side view of the main part of the guide wire 1. A plurality of rhombus marks 3 forming a lattice pattern 2 (geometric pattern) is applied to the side peripheral wall of the tip including the distal end (front end) of the guide wire 1 by, for example, laser processing. Is engraved. The adjacent rhombus marks 3 are connected to each other along the circumferential direction and the longitudinal direction of the side peripheral wall of the guide wire 1 through the top. The lattice pattern 2 is formed by the rhombus marks 3 connected in this way and the side peripheral wall of the guide wire 1 remaining in the rhombus shape between the adjacent rhombus marks 3.

That is, the part other than the rhombus mark 3 is the side peripheral wall of the guide wire 1, and therefore the color of the part is the color of the guide wire 1. The said part (side peripheral wall of the guide wire 1) is colored black, white, or silver, for example.

On the other hand, the diamond mark 3 is colored by the structural color.

The structural color is a color that is visually recognized when interference, diffraction, scattering, or the like is generated in light due to a structure such as a fine unevenness of about several hundred nm. The principle of coloring such a structural color is well known, and therefore detailed description thereof is omitted.

The structural color may be provided by engraving the side wall of the guide wire 1, or a film exhibiting a structural color by applying a fine uneven structure by laser processing, nanoimprint lithography, or the like, You may make it provide by sticking the film which has a multilayer structure which consists of a different polymer layer to the side wall of the guide wire 1. FIG.

In the first embodiment, at the tip including the distal end (front end) of the guide wire 1, the structural colors of all the rhombus marks 3 are the same color. Since the guide wire 1 is inserted into the body of the subject, the structural color of the rhombus mark 3 is preferably a color that allows the lattice pattern 2 to be easily visually recognized in the body. That is, for example, blue-green which is complementary to the blood color red is preferable. Alternatively, it may be blue or green.

As described above, the color of the rhombus mark 3 is a structural color. That is, colorants such as dyes and pigments are not used. Therefore, an increase in cost is avoided. In addition, the coloring work is not necessary and simple.

The guide wire 1 according to the first embodiment is basically configured as described above. Next, the operation and effect will be described.

The guide wire 1 is used when performing treatment with a known endoscope (not shown). In this case, first, an endoscope is inserted from the mouth of the subject. The surgeon advances the endoscope while confirming the position of the front end portion of the endoscope based on the image. Then, when the front end of the endoscope reaches a position where it has passed through the duodenal papilla, the progress of the endoscope is stopped.

After inserting the endoscope into the subject's body in this way, the operator next causes the catheter to reach the duodenal papilla through the lumen of the endoscope. The surgeon further advances the guide wire 1 from the duodenal papilla to the bile duct or pancreatic duct through the lumen of the catheter.

As described above, the lattice pattern 2 is engraved at the tip of the guide wire 1 by connecting a plurality of rhombus marks 3 together. Moreover, the lattice pattern 2 is also formed along the circumferential direction. For this reason, when the guide wire 1 is rotating, it can be easily recognized that the lattice pattern 2 is moving along the circumferential direction of the guide wire 1. Thus, the surgeon can grasp that the guide wire 1 is rotating.

In addition, since the lattice pattern 2 is formed at the distal end portion of the guide wire 1, the insertion length of the guide wire 1 can be grasped by confirming whether or not the lattice pattern 2 is formed at a visually recognized site. Can do.

Next, a modification of the first embodiment will be described.

FIG. 2 is a schematic side view of the main part of the guide wire 10, and FIG. 3 is an enlarged view of the main part. A plurality of rhombus marks 13 forming a lattice pattern 12 are engraved on the side peripheral wall of the tip including the distal end (front end) of the guide wire 10 by, for example, laser processing. . Adjacent rhombus marks 13 are connected to each other along the circumferential direction and the longitudinal direction of the side peripheral wall of the guide wire 10 via the top. The lattice pattern 12 is formed by the rhombus marks 13 connected in this way and the side peripheral wall of the guide wire 10 remaining in the rhombus shape between the adjacent rhombus marks 13.

Also in this case, the portion other than the rhombus mark 13 is the side peripheral wall of the guide wire 10, and therefore the color of the portion is the color of the guide wire 10. The said part (side peripheral wall of the guide wire 10) is colored in black, white, or silver, for example similarly to the guide wire 1.

On the other hand, the diamond mark 13 is colored by the structural color. In this modification, at the distal end including the distal end (front end) of the guide wire 10, the first portion 14, the second portion 16, It is divided into a third part 18, a fourth part 20 and a fifth part 22. The first part 14 to the fifth part 22 are different only in the structural color of the rhombus mark 13, and the materials and the like are the same.

In this case, the first portion 14 closest to the distal end side and the fifth portion 22 farthest from the distal end (closest to the proximal end) are fine so that the structural color is red. A structure is formed. Further, the second part 16 adjacent to the first part 14 and the fourth part 20 adjacent to the fifth part 22 have a yellow structural color, and the third part 18 located in the center has a blue structural color. Has a fine structure.

That is, in the guide wire 10, the portions colored red, yellow, blue, yellow, and red from the distal end side are arranged in this order. In short, in this case, so-called signal colors are employed.

As described above, each color is a structural color. That is, colorants such as dyes and pigments are not used. Therefore, an increase in cost is avoided. In addition, the coloring work is not necessary and simple.

Of course, the structural color may be provided by engraving the side wall of the guide wire 10, or a film exhibiting a structural color by applying the fine uneven structure as described above, or nano-order You may make it provide by sticking the film which has a multilayered structure which consists of a different polymer layer on the side wall of the guide wire 10. FIG.

The guide wire 10 according to the modification of the first embodiment is basically configured as described above, and the operation and effect thereof will be described next.

The guide wire 10 is used when a treatment is performed by a known endoscope (not shown), similarly to the guide wire 1 described above. That is, the surgeon first inserts the endoscope from the subject's mouth and advances the endoscope while confirming the position of the front end portion of the endoscope based on the image. Then, when the front end of the endoscope reaches a position where it has passed through the duodenal papilla, the progress of the endoscope is stopped.

After inserting the endoscope into the subject's body in this way, the operator next causes the catheter to reach the duodenal papilla through the lumen of the endoscope. The surgeon further advances the guide wire 10 from the duodenal papilla to the bile duct or pancreatic duct through the lumen of the catheter.

As described above, the lattice pattern 12 is engraved at the tip of the guide wire 10 by the plurality of rhombus marks 13 intersecting each other. Moreover, the lattice pattern 12 is also formed along the circumferential direction. For this reason, when the guide wire 10 is rotating, it can be easily recognized that the lattice pattern 12 is moving along the circumferential direction of the guide wire 10. Thus, the surgeon can grasp that the guide wire 10 is rotating.

Here, in the first embodiment, each rhombus mark 13 in the first part 14 to the fifth part 22 exhibits a signal color. Therefore, when the red color (attention color) of the first part 14 is displayed as an image, the operator can recognize that “the guide wire 10 has not been sufficiently inserted yet”.

Further, when the yellow (quasi-attention color) rhombus mark 13 of the second part 16 is displayed as an image, the surgeon says, “Although the guide wire 10 is inserted, it should be further inserted.” Can be recognized.

Then, when the blue (safe color) rhombus mark 13 of the third portion 18 is projected as an image, it can be recognized that “the guide wire 10 is properly inserted”.

Further, when the yellow (quasi-attention color) rhombus mark 13 of the fourth portion 20 is projected as an image, “the guide wire 10 is sufficiently inserted, but it is slightly excessive, and it is better to return it. Can be recognized.

Finally, when the red (attention color) rhombus mark 13 of the fifth portion 22 is displayed as an image, it can be recognized that “the guide wire 10 has been inserted excessively and should be returned”. .

As described above, in the first embodiment using the signal color, when the insertion length of the guide wire 10 is inappropriate, the diamond-shaped mark 13 of the alert color is displayed, so that the insertion length of the guide wire 10 is appropriate. It can be easily determined in a short time.

After inserting the guide wire 10 with an appropriate insertion length as described above, the operator next performs pancreaticobiliary treatment including a stent, a nipple incision knife, a quarrying basket, or the like necessary for procedures such as diagnosis and surgery. A tool is inserted along the guide wire 10 to reach a predetermined position in the bile duct or pancreatic duct. Since the insertion length of the guide wire 10 is appropriate, it is easy to reach the pancreatobiliary treatment instrument to a predetermined position.

After that, the surgeon performs treatment such as gallstone removal. Since the pancreatobiliary treatment instrument has reached a predetermined position, the treatment can be performed quickly.

Thus, according to the first embodiment, the lattice pattern 12 is engraved along the circumferential direction and the longitudinal direction of the guide wire 10, and the lattice pattern 12 is colored with a structural color. For this reason, the movement (rotation) of the guide wire 10 in the circumferential direction, the displacement length (insertion length) in the traveling direction, and the like can be easily grasped. As a result, the guide wire 10 and the pancreaticobiliary treatment instrument can be inserted with an appropriate length, so that the treatment with the pancreaticobiliary treatment instrument is quick and easy.

The geometric pattern is not particularly limited to the lattice pattern 12 shown in FIG. 2 (FIG. 3). For example, a spiral pattern 30 as shown in FIG. 4 may be used.
In order to provide such a spiral pattern 30 on the side peripheral wall of the guide wire, for example, a plurality of slits 32 may be formed by laser processing.

In this case, the slit 32 exhibits a structural color. Of course, in this case as well, the slits 32 colored in different structural colors may be formed so as to provide portions where the colors of the spiral pattern 30 (geometric pattern) are different from each other.

Here, it is preferable that the spiral pattern 30 is most dense in the first portion 14 on the distal end (front end) side. In this case, the first part 14 can be easily distinguished from the remaining second part 16 to fifth part 22. Therefore, it is easy to determine what position the distal end of the guide wire has reached by confirming the image.

Moreover, the pattern which exhibits a structural color is not specifically limited to the rhombus mark 13 shown in FIG. 2 (FIG. 3), and even if it is what is called a horizontal stripe pattern as shown to (a) in FIG. Good.

The pattern that exhibits the structural color may be a square pattern as shown in FIG. In FIGS. 5A and 5B, the same hatching indicates the same color. That is, in any of (a) and (b) in FIG. 5, for example, red, yellow, blue, yellow, and red are colored from the distal end side.

The structural color is not particularly limited to the signal color. For example, in a CCD camera for acquiring an image, the three primary colors of light are easily visible. Therefore, as shown in FIG. 6A, for example, the structural color of the first part 14 and the fifth part 22 is red, the structural color of the second part 16 and the fourth part 20 is blue, The structural color of the third portion 18 may be green.

Also, instead of red which is not easily visible in the body, for example, as shown in FIG. 6B, the structural color may be silver or the like.

Furthermore, when at least two colors selected from the group of red, blue, yellow, green, light blue, purple, and orange are used, preferably three or more colors are used, it becomes easier to identify the portion of the guide wire.

In the embodiment described above, the structural color is made different along the longitudinal direction of the guide wire 10, but the structural color may be made different along the circumferential direction. For example, in the example shown in (c) of FIG. 6, the first portion 14 and the fifth portion 22 are arranged in a horizontal stripe pattern of blue, red, and yellow along the circumferential direction, the second portion 16 and the fourth portion. The part 20 is a two-color horizontal stripe pattern of blue and red along the circumferential direction, and the third part 18 is only blue. In this case, whether the color of the first part 14 or the second part 16 is changed, whether or not the guide wire 10 is rotating until the guide wire 10 moves to an appropriate arrival position. It becomes possible to determine by confirming whether or not.

The color scheme of the structural colors may be alternate as shown in (d) of FIG. In this case, a blue and red two-color horizontal stripe pattern along the circumferential direction and a yellow and green two-color horizontal stripe pattern along the circumferential direction are alternately arranged.

In this case, it is possible to determine whether or not the guide wire 10 is rotating by checking whether or not the color of the portion colored with the structural color has changed.

In any case, since the structural color is different for each part in the same manner as described above, it is easy to grasp the insertion length of the guide wire 10.

Furthermore, the side peripheral wall of the guide wire 10, that is, the portion other than the portion where the geometric pattern is formed may be colored with a structural color. The structural color in this case is preferably silver.

Next, a suture needle is exemplified as a medical member according to the second embodiment.

FIG. 7 is a schematic perspective view of a main part of the suture needle 40. A rhombus-shaped lattice pattern 42 shown in FIG. 7 is engraved on the side wall of the suture tip 40 (front end) of the suture needle 40 by, for example, laser processing. The lattice pattern 42 continues along the circumferential direction and the longitudinal direction of the side wall of the suture needle 40.

The lattice pattern 42 includes a plurality of rhombus marks 44. In this case, the rhombus mark 44 is colored by the structural color throughout the tip or the long axis direction.

The suturing needle 40 is used, for example, when performing suturing in blood vessel bypass surgery or the like, and it is sufficient if the position of the suturing tip can be recognized. That is, it is not particularly necessary to know whether or not it is rotating and the exact insertion length. Therefore, in this case, one structural color is sufficient. Of course, the entire suture needle 40 may be colored with a plurality of structural colors. As the structural color, for example, a blue-green color that is complementary to the blood color (red) or a blue color close thereto may be selected.

That is, according to the second embodiment, it is possible to easily grasp what position the suture tip of the suture needle 40 has reached.

Next, a suture is illustrated as a medical member according to the third embodiment.

FIG. 8 is a schematic side view of the main part of the suture thread 50. A film (not shown) is stuck to the side peripheral wall of the suture tip (front end) of the suture 50. For example, the film is engraved with a diamond-shaped lattice pattern 52 shown in FIG. 8 by laser processing. The film thus exhibits a structural color. The lattice pattern 52 continues along the circumferential direction and the longitudinal direction of the side peripheral wall of the suture thread 50.

The lattice pattern 52 includes a plurality of rhombus marks 54. And the rhombus mark 54 is colored with the structural color similarly to the rhombus mark 44 of 2nd Embodiment.

The suture thread 50 is used when, for example, suture is performed in a blood vessel bypass operation or the like, and it is sufficient if the position of the suture tip can be recognized. That is, in this case as well, it is not particularly necessary to know the exact insertion length as to whether or not it is rotating. Accordingly, it is sufficient that the structural color is one color as described above. Of course, the entire suture 50 may be colored with a plurality of structural colors. As the structural color, for example, a blue-green color that is complementary to the blood color (red) or a blue color close thereto may be selected.

That is, also in the third embodiment, it is possible to easily grasp what position the suture tip of the suture 50 has reached.

The present invention is not particularly limited to the first to third embodiments described above, and various modifications can be made without departing from the gist of the present invention.

For example, the geometric patterns shown in FIGS. 2 to 4 and the structural color schemes shown in FIGS. 5 and 6 are examples, and other geometric patterns and color schemes may be used. FIG. 9 shows an example in which the lattice pattern 12 and a color arrangement pattern similar to (c) in FIG. 6 are adopted, but such a pattern may be used.

In this case, the first portion 14 and the fifth portion 22 adopt red, green, blue and yellow four-color horizontal stripes from below. Moreover, the 2nd site | part 16 and the 4th site | part 20 are red and yellow two-color horizontal stripe pattern from the downward direction. And the 3rd site | part 18 is 1 color of red.

In this case, for example, at least one of the four parts having different colors in the first part 14 may be configured by coloring the side wall of the guide wire or the like with a structural color.

Further, the medical member may be a long member, and is not particularly limited to the guide wire 10, the suture needle 40, or the suture thread 50.

Claims

In a medical member consisting of a long body,
A geometric pattern is formed on at least a part of the side wall of the elongated body,
A medical member, wherein at least a part of the geometric pattern is colored in a structural color.
The medical member according to claim 1,
The medical member, wherein the geometric pattern is a lattice pattern (12) or a spiral pattern (30) provided along a circumferential direction and a longitudinal direction of the elongated body.
The medical member according to claim 1,
The medical member, wherein the geometric pattern is formed of a color of a side wall of the elongated body and the structural color.
The medical member according to claim 1 or 2,
The medical member according to claim 1, wherein the elongated body has at least two portions having different structural colors of the geometric pattern along the longitudinal direction.
The medical member according to claim 4, wherein
The elongated body has a first part (14) to a fifth part (22) in this order from the front end side,
The first part (14) and the fifth part (22) are red, the second part (16) and the fourth part (20) are yellow, and the third part (18) is blue. The medical member characterized by exhibiting.
The medical member according to claim 4, wherein
A medical member, wherein at least two or more colors selected from the group consisting of red, blue, yellow, green, light blue, purple, and orange are used as the structural colors of the geometric pattern.
The medical member according to claim 4, wherein
The medical member according to claim 1, wherein the elongated body further includes at least two portions having different structural colors of the geometric pattern along a circumferential direction.
The medical member according to claim 7,
A medical member, wherein at least one of the at least two portions is a side wall of the elongated body colored with a structural color.
The medical member according to claim 3,
The medical member characterized in that the side wall of the elongated body is colored in black, white or silver, and the structural color is colored in red, yellow, blue or green. .
The medical member according to claim 1,
A medical member, wherein a film in which the geometric pattern having a structural color is formed is attached to a side wall of the elongated body.
The medical member according to claim 1,
The medical member, wherein the elongated body is an endoscope guide wire (1, 10).
The medical member according to claim 1,
The medical member, wherein the elongated body is a suture needle (40).
The medical member according to claim 1,
The medical member, wherein the elongated body is a suture thread (50).