JP2006246982A - Filling for endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filling for an endoscope in which only the filling can be easily removed from a treating instrument insertion channel of the endoscope leaving the distal end part of the treating instrument inside pancreaticobiliary ducts without the need of narrowing the thickness of the treating instrument or the path of a contrast medium. <P>SOLUTION: In the filling 10 for the endoscope using a flexible tube 11 which can be freely inserted and detached to/from the treating instrument insertion channel 51 of the endoscope 50, the flexible tube 11 is formed by piling up the long sides of a flexible thin and long sheet-like member with each other and cylindrically rounding it. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an endoscope contrast tube.

  When performing treatment using an endoscope for the pancreaticobiliary duct that opens to the papilla of the duodenum, Mr. Furter first inserts the tip of the contrast tube into the pancreaticobiliary duct via the treatment instrument insertion channel of the endoscope. Perform pancreaticobiliary imaging.

  And if the state of the pancreaticobiliary duct can be grasped from the contrast image, the treatment instrument is inserted into the pancreaticobiliary duct instead of the contrast tube. However, insertion into the pancreaticobiliary duct is very difficult as a technique, and simple flexibility Compared to the distal end of a contrast tube made of a tube, it is difficult to insert a treatment instrument having a distal end made of a rigid body such as a metal member into the pancreaticobiliary duct (particularly the bile duct side) as desired. Moreover, since the X-ray exposure is often accompanied when inserting into the pancreaticobiliary duct, it is not preferable to perform the insertion operation over time.

  Therefore, when a treatment instrument or the like is inserted into the pancreaticobiliary duct instead of the contrast tube, the thin tube is inserted into the pancreaticobiliary duct using the thin treatment tool that can be inserted into the contrast tube, and then only the contrast tube is visualized. A technique of removing from the treatment instrument insertion channel of the mirror is taken.

  However, if the distal end of the treatment instrument is simply left in the pancreaticobiliary duct and only the outer contrast tube is to be removed, the operation is performed to pull out the contrast tube from the long treatment instrument insertion channel provided in the endoscope. In some cases, the distal end portion of the treatment tool comes out of the pancreaticobiliary duct, and everything has to be redone from the beginning.

Therefore, it is conceivable to adopt a configuration in which the proximal side of the treatment instrument (guide wire) can be selectively fixed to the entrance portion of the treatment instrument insertion channel of the endoscope (for example, Patent Document 1).
Special table 2002-515305

  However, as described in Patent Document 1, in order to be able to remove only the contrast tube in a state where the proximal side of the treatment instrument (guide wire) is fixed to the entrance portion of the treatment instrument insertion channel of the endoscope, The treatment tool (guide wire) needs to be along the outer surface of the contrast tube.

  For this reason, it is necessary to form a U-shaped groove or the like on the outer surface of the contrast tube over the entire length, and to separately form a contrast agent passage, so that both the treatment instrument (guide wire) and the contrast agent passage become extremely narrow. It cannot be put to practical use.

  Therefore, according to the present invention, only the contrast tube can be easily removed from the treatment instrument insertion channel of the endoscope while leaving the distal end portion of the treatment instrument in the pancreaticobiliary duct, and the thickness of the treatment instrument and the passage of the contrast agent are narrow. An object of the present invention is to provide an endoscopic contrast tube that does not need to be performed.

  In order to achieve the above object, an endoscope contrast tube according to the present invention is an endoscope contrast tube in which a flexible tube that can be removably inserted into a treatment instrument insertion channel of an endoscope is used. The flexible tube is formed by rolling a long and thin sheet-like member having flexibility by rolling the long sides of each other into a cylindrical shape. The base end of the flexible tube serves as a contrast medium injection mouthpiece. It may be detachably inserted and connected.

  According to the present invention, since the flexible tube constituting the contrast tube is formed by overlapping the long sides of the elongated sheet-like member and rounding them into a cylindrical shape, from the proximal end side of the flexible tube Since the flexible tube can be pulled out to the hand side while the overlapping part of the flexible tube is opened sequentially and the treatment tool is taken out of the flexible tube, the tip of the treatment tool inserted through the contrast tube Only the contrast tube can be easily removed while leaving the portion in the pancreaticobiliary duct. Moreover, since the contrast agent passage and the treatment tool passage are shared, the diameter of the treatment tool and the contrast agent passage need to be narrowed. And sufficient practicality can be obtained.

  In an endoscope contrast tube in which a flexible tube that can be freely inserted into and removed from a treatment instrument insertion channel of an endoscope is used, the flexible tube has a long sheet-like member having flexibility between its long sides. It is formed by overlapping each other and rounding it into a cylindrical shape, and the base end of the flexible tube is detachably inserted into and connected to the contrast medium injection cap.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 2 shows an endoscope contrast tube 10. The contrast tube 10 of this embodiment includes a flexible tube 11 that can be inserted into and removed from a treatment instrument insertion channel (not shown) of the endoscope, and its base. It is composed of two parts, a contrast medium injection cap 12 connected to the end.

  The flexible tube 11 is shown in FIG. 3 as a single body, and a cross section perpendicular to the axis is shown in FIG. The members are formed by overlapping the long sides of each member over the entire length and rounding them into a cylindrical shape.

  Note that the overlapping range (θ shown in FIG. 4) is in the range of about 30 ° to 120 °. If the overlapping range θ is too small, leakage of the contrast agent increases, and θ is If it is too large, it will be difficult to perform the operation of removing it alone from the treatment instrument insertion channel described later.

  The contrast medium inlet 12 formed of a plastic material or a metal material is provided so as to be connectable and separable to the flexible tube 11 as shown in FIG. 5, and is formed straight on the contrast medium inlet 12. The base end portion of the flexible tube 11 is inserted and connected to the tube connection hole 12a. Accordingly, the flexible tube 11 is held by the contrast medium injection cap 12 so that the proximal end side of the flexible tube 11 does not open.

  The contrast agent injection cap 12 includes a first luer lock cap portion 12b formed at a position where the tube connection hole 12a is straightly extended, and a second luer lock cap branched at a right angle in a T-shape thereto. The part 12c is formed, and these are used properly according to the situation.

  When the treatment instrument 20 is passed through the contrast tube 10, as shown in FIG. 6, the treatment is performed over the entire length in the flexible tube 11 from the first luer lock base 12b through the contrast medium injection base 12. The distal end portion 20a of the treatment instrument 20 can be protruded from the distal end of the flexible tube 11 by inserting the instrument 20. Reference numeral 21 denotes an operation unit of the treatment instrument 20.

  Then, as shown in FIG. 1, the contrast medium inlet 12 is removed from the base end of the flexible tube 11, and the flexible tube 11 is overlaid from the base end side to the tip end side of the flexible tube 11. By sequentially opening the portions, the treatment tool 20 can be removed from the flexible tube 11.

  7 to 11 sequentially show the use state of the contrast tube 10 configured as described above. In FIG. 7, the flexible tube 11 passed through the treatment instrument insertion channel 51 of the endoscope 50 is shown. The distal end is inserted into the pancreaticobiliary duct 100, and a contrast agent is injected into the pancreaticobiliary duct 100. Although not shown, a contrast medium injection cap 12 is attached to the proximal end of the flexible tube 11. 52 is a treatment tool raising piece.

  When the state of the pancreaticobiliary duct 100 can be grasped from the contrast image, the treatment instrument from the proximal end into the flexible tube 11 so that the distal end portion 20a of the treatment instrument 20 reaches the pancreaticobiliary duct 100 as shown in FIG. 20 is inserted.

  At this time, the contrast medium injection cap 12 may be removed from the base end of the flexible tube 11 in advance. However, the contrast agent injection cap 12 may be removed after the treatment instrument 20 is inserted and moved toward the proximal end side of the treatment instrument 20.

  When the distal end portion 20a of the treatment instrument 20 reaches the pancreaticobiliary duct 100, the overlapping portion of the flexible tube 11 is sequentially opened from the proximal end side of the flexible tube 11, as shown in FIG. As shown in FIG. 9, the distal end portion 20 a of the treatment instrument 20 is pancreaticobiliary as shown in FIG. 9 by holding the treatment instrument 20 and pulling only the flexible tube 11 toward the hand side while pushing the treatment instrument 20 out of the flexible tube 11. Only the flexible tube 11 is drawn into the treatment instrument insertion channel 51 while remaining in the 100.

  Then, as shown schematically in FIG. 10, by continuing the operation of pulling out the flexible tube 11 while holding the treatment tool 20 so as not to move on the inlet side of the treatment tool insertion channel 51, as shown in FIG. The contrast tube 10 can be completely removed with the distal end portion 20a of the treatment instrument 20 left in the pancreaticobiliary duct 100.

It is side surface sectional drawing for demonstrating operation | movement of the contrast tube for endoscopes of the Example of this invention. It is side surface sectional drawing of the contrast tube for endoscopes of the Example of this invention. It is a perspective view of the flexible tube of the Example of this invention. It is sectional drawing perpendicular | vertical to the axis line of the flexible tube of the Example of this invention. It is side surface sectional drawing of the state by which the flexible tube and contrast agent injection nozzle of the contrast tube for endoscopes of the Example of this invention were isolate | separated. It is side surface sectional drawing of the state by which the treatment tool was let through the contrast tube for endoscopes of the Example of this invention. It is a schematic diagram which illustrates the use condition of the contrast tube for endoscopes of the example of the present invention. It is a schematic diagram which illustrates the use condition of the contrast tube for endoscopes of the example of the present invention. It is a schematic diagram which illustrates the use condition of the contrast tube for endoscopes of the example of the present invention. It is a schematic diagram which illustrates the use condition of the contrast tube for endoscopes of the example of the present invention. It is a schematic diagram which illustrates the use condition of the contrast tube for endoscopes of the example of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Contrast tube 11 Flexible tube 12 Contrast agent injection cap 20 Treatment tool 20a Tip part 50 Endoscope 51 Treatment tool insertion channel 100 Pancreaticobiliary duct

Claims (2)

In an endoscope contrast tube in which a flexible tube that can be freely inserted into and removed from a treatment instrument insertion channel of an endoscope is used,
A contrast tube for an endoscope, wherein the flexible tube is formed by rolling a long and thin sheet member having flexibility into a cylindrical shape by superposing long sides of each other.   The contrast tube for an endoscope according to claim 1, wherein the base end of the flexible tube is detachably inserted and connected to a contrast medium injection cap.

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