JP2007111223A - Medical catheter kit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a medical catheter kit which is inserted into a treatment instrument insertion channel easily by preventing winding of the catheter within the treatment instrument insertion channel. <P>SOLUTION: The medical catheter kit 1 comprises a nasal drainage tube (a catheter) 6 and an insertion adaptor (a sheath tube) 7. At least a part of the nasal drainage tube is inserted into and dwelled within the bile duct (the body cavity) via the treatment instrument insertion channel 3 arranged in an endoscope 2, and the full length of the nasal drainage tube is longer than the sum of the dwelled length within the bile duct and the length of the treatment instrument insertion channel 3. The insertion adaptor has an outer diameter smaller than the inner diameter of the treatment instrument insertion channel 3 and an inner diameter larger than the outer diameter of the nasal drainage tube 6, and can be inserted into the treatment instrument insertion channel 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a medical catheter kit that is inserted into a body cavity of a patient.

  As one of medical catheters used in the procedure of discharging bile collected in the bile duct, there are an inner tube type and an outer tube type drainage tube. The inner rod type drainage tube is used with one end being placed in the bile duct and the other end projecting out of the bile duct. In such an internal drainage type drainage tube, a notch portion on the tube surface and a loop portion called a pigtail for reducing movement prevention after indwelling in the bile duct generally called a flap are arranged.

  On the other hand, there is a nasal drainage tube as one of the external drainage drainage tubes (for example, refer to Patent Document 1). This nasal drainage tube is used with one end side indwelled in the bile duct and the other end side drawn out from the body through the nasal cavity. Since this nasal drainage tube is indwelled for several days in the above-mentioned state, it is formed very flexibly.

Any type of drainage tube is inserted to the bile duct, the left and right hepatic ducts, the gallbladder duct, the pancreatic duct and the like through the treatment instrument insertion duct arranged in the endoscope.
In order to deal with a wide variety of other treatment instruments, the treatment instrument insertion conduit is designed to innovate in the direction of securing a large inner diameter as much as possible.

Here, as shown in FIG. 4, when a flexible catheter such as the nasal drainage tube 100 is inserted into an endoscope having a large treatment instrument insertion line, the treatment instrument insertion line 101 is inserted without meandering. Thus, it is desirable that the endoscope 102 can protrude from the distal end of the insertion portion 103. However, normally, as shown in FIG. 5, the nasal drainage tube 100 meanders in the treatment instrument insertion conduit 101, and it is difficult to insert the distal end of the insertion portion 103.
Moreover, in order to improve the insertability of the nasal drainage tube 100, it may be inserted using a guide wire 105 as shown in FIG. However, the friction between the nasal drainage tube 100 and the guide wire 105 is large, and the nasal drainage tube 100 meanders with the guide wire 105 in the treatment instrument insertion conduit 101. The amount of insertion force increases, making insertion difficult.
JP 2003-135590 A

  The present invention has been made in view of the above circumstances, and provides a medical catheter kit that can be easily inserted into a treatment instrument insertion conduit while suppressing meandering of the catheter in the treatment instrument insertion conduit. With the goal.

The present invention employs the following means in order to solve the above problems.
The medical catheter kit according to the present invention is inserted at least partially into a body cavity via a treatment instrument insertion conduit arranged in an endoscope, and the entire length is indwelled in the body cavity and the treatment tool. Insertable into the treatment instrument insertion conduit with a catheter longer than the sum of the length of the insertion conduit, an outer diameter smaller than the inner diameter of the treatment instrument insertion conduit, and an inner diameter larger than the outer diameter of the catheter And an outer tube.

  In this medical catheter kit, a catheter is inserted into a mantle tube, and the catheter can be advanced and retracted with respect to the mantle tube. Therefore, when the catheter is inserted into the treatment instrument insertion line of the endoscope, the outer tube is inserted into the outer tube while the outer tube is inserted into the treatment instrument insertion line, or the outer tube is inserted into the outer tube in advance. Can be added to the rigidity of the catheter, so that the rigidity of the catheter in the treatment instrument insertion line can be improved.

  Further, the medical catheter kit according to the present invention is the medical catheter kit, wherein the outer tube is inserted when the outer tube is inserted into the treatment instrument insertion conduit from the operation portion of the endoscope. In the treatment instrument insertion conduit, the length of the outer tube reaches at least the insertion portion of the endoscope.

  In this medical catheter kit, when the mantle tube is inserted in advance to the distal end of the treatment instrument insertion conduit, the distal end of the mantle tube is inserted to the endoscope insertion region of the treatment instrument insertion conduit. The other end of the tube can protrude from the proximal end of the treatment instrument insertion conduit. Therefore, the catheter can be inserted into the outer tube before being inserted into the treatment instrument insertion conduit, and the catheter can be inserted while maintaining high rigidity with respect to the treatment instrument insertion conduit.

The medical catheter kit according to the present invention is the medical catheter kit, comprising a fixture that supports both the outer tube and the catheter, and the outer diameter of the fixture is the treatment instrument insertion tube. It is characterized by being larger than the inner diameter of the path.
In this medical catheter kit, the outer tube or catheter can be inserted into the unintended excessive treatment instrument insertion conduit by bringing the fixing tool into contact with the end of the treatment instrument insertion conduit. And insertion of the catheter into the treatment instrument insertion line can be suppressed.

  ADVANTAGE OF THE INVENTION According to this invention, it can suppress that a catheter curves and meanders by friction etc. with a treatment tool insertion duct wall surface, and can insert a catheter into a treatment instrument insertion duct easily.

An embodiment according to the present invention will be described with reference to FIGS.
The medical catheter kit 1 according to this embodiment is inserted at least partially into a bile duct (body cavity) 5 via a treatment instrument insertion conduit 3 disposed in an endoscope 2, and the entire length of the bile duct 5 is indwelled. A nasal drainage tube (catheter) 6 longer than the sum of the indwelling length and the length of the treatment instrument insertion conduit 3, and an outer diameter smaller than the inner diameter of the treatment instrument insertion conduit 3 and the outside of the nasal drainage tube 6. An insertion adapter (outer tube) 7 having an inner diameter larger than the diameter and insertable into the treatment instrument insertion conduit 3 is provided.

The endoscope 2 is a so-called side view type, and includes an insertion portion 8 that is flexible and is inserted into the body, and an operation portion 10 that performs a bending operation on the distal end side of the insertion portion 8. The treatment instrument insertion conduit 3 is arranged so as to penetrate a part of the operation unit 10 and the inside of the insertion unit 8.
The treatment instrument insertion conduit 3 is branched at the branching section 11 in the operation section 10, and is arranged with one end opened at the distal end of the insertion section 8 and the other end disposed at the operation section 10. It is communicated to.

The nasal drainage tube 6 is made of an elongated and flexible material, and one end side is placed in the bile duct 5 and the other end side is drawn out of the body from the nasal cavity. Then, bile is released through the nasal drainage tube 6.
The nasal drainage tube 6 is used for grasping the state and amount of bile and also for cholangiography.

The insertion adapter 7 is formed in a tube shape, and the length of the insertion adapter 7 is longer than the length of the treatment instrument insertion conduit 3. Specifically, when the insertion adapter 7 is inserted into the treatment instrument insertion conduit 3, when one end is disposed at the distal end position of the insertion portion 8, the other end projects from the forceps port 12 by a predetermined length. It is said that the length.
The insertion adapter 7 is provided with a fixture 13 for fixing the nasal drainage tube 6 after the nasal drainage tube 6 is inserted into the insertion adapter 7.

  The fixing tool 13 is crushed when the female member 13A and the male member 13B are screwed together with the female adapter 13A screwed with the male member 13B in a state in which the insertion adapter 7 is penetrated. And an O-ring 13C that secures the fixing to the fixture. The outer diameter (D) of the fixture 13 is formed larger than the inner diameter (d) of the treatment instrument insertion conduit 3.

Next, a method of using the medical catheter kit 1 according to this embodiment, and actions and effects will be described.
First, the insertion portion 8 of the endoscope 2 is inserted into the body through the mouth and moved to the vicinity of the duodenal papilla 13.
After the cholangiography, a guide wire (not shown) is inserted into the treatment instrument insertion conduit 3 from the forceps port 12 and is left in the bile duct 5.

  An incision knife (not shown) is inserted into the treatment instrument insertion conduit 3 through the guide wire, and the duodenal papilla 13 is incised. Thereafter, if necessary, a quarrying procedure using a balloon catheter (not shown) is performed to remove the calculus in the bile duct 5.

  On the other hand, a nasal drainage tube 6 that is inserted into the insertion adapter 7 in advance and fixed to the insertion adapter 7 with a fixture is prepared. In this state, it is inserted into the treatment instrument insertion conduit 3 from the forceps port 12 while being inserted through the guide wire together with the insertion adapter 7.

  At this time, since the outer diameter of the insertion adapter 7 is larger than the outer diameter of the nasal drainage tube 6, the treatment instrument is inserted when compared with the case where the nasal drainage tube 6 is inserted into the treatment instrument insertion conduit 3 alone. A gap between the inner wall of the pipe line 3 is reduced. In addition, since the nasal drainage tube 6 is housed in the insertion adapter 7, the thickness of the nasal drainage tube 6 is the same as that of the insertion adapter 7. Accordingly, the rigidity of the nasal drainage tube 6 with respect to the treatment instrument insertion conduit 3 is improved.

  As a result, even if the insertion adapter 7 is caught in the middle of the treatment instrument insertion conduit 3, the insertion adapter 7 and the nasal drainage tube 6 are not bent or curved on the spot in the treatment instrument insertion conduit 3. The nasal drainage tube 6 is inserted along the tube wall to the tip of the treatment instrument insertion conduit 3 without meandering.

Then, the fixation by the fixing tool 13 is released so that the distal end of the insertion adapter 7 does not protrude from the distal end of the insertion portion 8 of the endoscope 2, and only the nasal drainage tube 6 is attached to the treatment instrument insertion conduit 3. It is inserted into the bile duct 5 and left in place.
In this way, the insertion adapter 7 is removed from the treatment instrument insertion conduit 3 together with the guide wire, and the insertion portion 8 of the endoscope 2 is further removed, or by removing them together, only the nasal drainage tube 6 is removed. Place in the bile duct 5.

On the other hand, the nasal drainage tube 6 may be inserted into the insertion adapter 7 with only the insertion adapter 7 inserted into the treatment instrument insertion conduit 3 first.
In this case, the insertion adapter 7 is first inserted into the treatment instrument insertion conduit 3 from the forceps port 12 through the guide wire inserted through the treatment instrument insertion conduit 3. Similarly, the nasal drainage tube 6 is inserted into the insertion adapter 7 through the guide wire.

At this time, since the inner diameter of the insertion adapter 7 is smaller than the inner diameter of the treatment instrument insertion conduit 3, the nasal drainage tube 6 is inserted into the insertion adapter 7 without meandering.
In this way, after the distal end of the nasal drainage tube 6 protrudes from the distal ends of the insertion adapter 7 and the insertion portion 8 of the endoscope 2, the subsequent treatment is performed as described above.

  According to this medical catheter kit 1, when the nasal drainage tube 6 is inserted into the treatment instrument insertion conduit 3, the nasal drainage tube 6 is moved within the conduit by friction with the wall surface of the treatment instrument insertion conduit 3. It can suppress bending and meandering. Therefore, the nasal drainage tube 6 can be easily inserted into the treatment instrument insertion conduit 3.

  In particular, when the insertion adapter 7 is inserted in advance to the distal end of the treatment instrument insertion conduit 3, the other end of the insertion adapter 7 is inserted into the forceps port while one end of the insertion adapter 7 is inserted to the distal end of the treatment instrument insertion conduit 3. 12 can be projected. Therefore, the nasal drainage tube 6 can be inserted into the insertion adapter 7 before being inserted into the treatment instrument insertion conduit 3. As a result, the nasal drainage tube 6 can be inserted into the treatment instrument insertion conduit 3 while maintaining high rigidity with respect to the treatment instrument insertion conduit 3.

  In addition, since the outer diameter of the fixture 13 is larger than the inner diameter of the treatment instrument insertion conduit 3, even if the insertion adapter 7 is inserted into the treatment instrument insertion conduit 3 unintentionally, than the fixture 13. Also, it is possible to suppress the proximal insertion adapter 7 from being inserted into the treatment instrument insertion conduit 3.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above embodiment, a nasal drainage tube is used as a catheter, but the present invention is not limited to this, and other catheters may be used as long as they are elongated and flexible.

  Although the length of the insertion adapter 7 is longer than that of the treatment instrument insertion conduit 3, when the insertion adapter 7 is inserted into the treatment instrument insertion conduit 3 from the forceps port 12 of the operation unit 10, the distal end of the insertion adapter is inward. The length may be such that it can reach the insertion portion 8 of the endoscope 2. Further, the fixing tool 13 may be fixed to the insertion adapter 7 so that the distance between the fixing tool 13 and the distal end of the insertion adapter 7 is shorter than the entire length of the treatment instrument insertion conduit 3. In these cases, the distal end of the insertion adapter 7 can be prevented from protruding from the tip of the treatment instrument insertion conduit 3.

It is sectional drawing which shows the state which inserted the medical catheter kit which concerns on one Embodiment of this invention in the endoscope. It is sectional drawing which shows the state which inserted the medical catheter kit which concerns on one Embodiment of this invention in the endoscope. It is explanatory drawing which shows the use condition of the medical catheter kit which concerns on one Embodiment of this invention. It is explanatory drawing which shows an ideal state when only a catheter is inserted in an endoscope. It is explanatory drawing which shows an actual state when only a catheter is inserted in an endoscope. It is explanatory drawing which shows an actual state when inserting a guide wire in a catheter and inserting in an endoscope.

Explanation of symbols

1 Medical catheter kit 6 Nasal drainage tube (catheter)
7 Insertion adapter (mantle tube)
13 Fixing tool

Claims (3)

At least a portion is inserted into the body cavity via the treatment instrument insertion line disposed in the endoscope and placed, and the total length is greater than the sum of the placement length in the body cavity and the length of the treatment tool insertion line A long catheter,
A medical device comprising: an outer tube having an outer diameter smaller than an inner diameter of the treatment instrument insertion conduit and an inner diameter larger than an outer diameter of the catheter and capable of being inserted into the treatment instrument insertion conduit. Catheter kit.   When the outer tube is inserted into the treatment instrument insertion conduit from the operation portion of the endoscope, the outer tube is at least inserted into the insertion portion of the endoscope in the treatment instrument insertion conduit. The medical catheter kit according to claim 1, wherein the length of the medical catheter kit is equal to or longer than a length reached by the distal end. A fixture for supporting both the outer tube and the catheter;
The medical catheter kit according to claim 2, wherein an outer diameter of the fixture is larger than an inner diameter of the treatment instrument insertion conduit.

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