JP2019017965A - Catheter for urinary bladder - Google Patents

Abstract

To provide a catheter for urinary bladders configured not to damage an inner wall of the urinary bladder when being inserted into the urinary bladder.SOLUTION: A wire 7 coated with a polymer material is inserted through the inside of a shaft 3, which allows a catheter to be bent in a discretionary direction and hold the bent structure. The bent part 6 is inserted via an abdominal hole 11 into an urinary bladder 12, with it bent substantially orthogonally, so as to reduce a possibility of its coming into contact with an urinary bladder inner wall 13 at a part of a side hole 1, thereby reducing a possibility of damaging the urinary bladder inner wall 13. Furthermore, the configuration can also reduce a possibility of the catheter falling off.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a medical catheter, and more particularly to a catheter used for a bladder.

  A catheter is a flexible tube used for medical purposes, and is inserted into a required site in the body, and is used for collecting and discharging body fluids and injecting medicinal solutions and contrast agents.

  For patients who have bladder dysfunction due to aging, decreased bladder function due to cystitis, obstruction of the urinary tract such as urethritis or urethral stone, abnormal urination due to prostatic hypertrophy, etc. In some cases, the catheter is inserted into the bladder via an abdominal hole provided in the abdomen.

  FIG. 3 shows an example of a conventional catheter. In FIG. 3, 27 is a shaft, and 28 is a catheter bag. 2 is a view showing an example in which a conventional catheter is inserted into the bladder via the abdominal hole, FIG. 2 (a) is a front view, and FIG. 2 (b) is a sectional view of the shaft. . In FIG. 2, 14 is a side hole, 15 is a balloon, 16 is a shaft, 17 is a valve, 18 is a funnel, 19 is a bend, 20 is a wire, 21 is a wire protection tube, 22 is a balloon air tube, 23 is an abdomen, 24 is an abdominal hole, 25 is a bladder, and 26 is a bladder inner wall.

  Conventional catheters are soft, but are difficult to bend at any angle. Therefore, as shown in FIG. 2, when the abdomen hole 24 is inserted into the bladder 25, the possibility that the tip of the balloon 15 of the catheter contacts the bladder inner wall 26 of the bladder 25 increases. As a result, damage to the bladder inner wall 26, bleeding and blood clots, inflammation, infection, etc. may occur from the bladder inner wall 26.

  The catheter inserted from the funnel 18 or the valve 17 reaches the abdomen 23 linearly and is inserted into the bladder 25 through the abdominal hole 24. At that time, since the conventional catheter is linear, when inserted from the abdominal hole 24, the catheter rises in the abdominal hole 24 and does not adhere to the abdominal part 23. As a result, the distal end of the balloon 15 of the catheter inserted obliquely into the bladder 25 contacts the bladder inner wall 26, and the bladder inner wall 26 is damaged. There is a possibility that the catheter packaging bag is stained red with blood and blood clots, inflammation, infections, etc. are likely to occur. Furthermore, there is a possibility that the catheter is easily displaced or removed.

  As an example for use with the bladder, the device in US Pat. No. 6,057,059 comprises a catheter having an elongated body with a distal tip, a proximal end, and one or more channels extending through the elongated body, and guides the catheter during insertion. The guide wire is inserted into one of the one or more channels, and the guide wire cleaning liquid is inserted into the proximal end portion of the elongated body or in the vicinity of the proximal end portion. A urethral stricture dilation with a lubrication port is disclosed for introduction into the body. However, this prior art does not correspond to the above problem.

Japanese Patent Laying-Open No. 2015-013197

  Therefore, in view of the above problems, an object of the present invention is to provide a bladder catheter that does not damage the bladder inner wall when inserted into the bladder.

  The present invention has been made as a result of reconsideration of the structure of a wire inserted through a shaft and a method of inserting a catheter into an abdominal hole in order to solve the above problems.

  That is, the present invention is a urethral bladder catheter having a shaft having a funnel at one end and a balloon at the other end, and is coated with a polymer material between the funnel of the shaft and the balloon. A urinary bladder catheter is characterized in that an inserted wire is inserted and the shaft can be bent at an arbitrary angle.

  In addition, the present invention bends the required position of the shaft at a right angle, and inserts the end of the shaft on the side provided with the balloon into the bladder via the abdominal hole provided in the abdomen, The method for using the bladder catheter is characterized in that a portion between the bent portion and the end of the shaft provided with the funnel is closely attached to the abdomen.

  In the bladder catheter according to the present invention, the wire is coated with a polymer material, and the shaft is bent at a substantially right angle and inserted into the bladder through the abdominal hole, so that the possibility of damaging the bladder inner wall becomes extremely small. The polymer material used for the coating is not particularly limited, but polyurethane, fluororesin, or the like can be used, and a Ti—Ni superelastic alloy or the like is used for the wire.

  The figure which shows the example which inserted the catheter which concerns on this invention into the bladder via the abdominal hole, FIG. 1 (a) is a front view, FIG.2 (b) is sectional drawing of a shaft.   The figure which shows the example which inserted the conventional catheter through the abdominal hole in the bladder, FIG. 2 (a) is a front view, FIG.2 (b) is sectional drawing of a shaft.   The figure which shows an example of the conventional catheter

  Next, embodiments of the present invention will be described with reference to specific drawings. FIG. 1 is a view showing an example in which a catheter according to the present invention is inserted into a bladder via an abdominal hole, FIG. 1 (a) is a front view, and FIG. 2 (b) is a sectional view of a shaft. is there. In FIG. 1, 1 is a side hole, 2 is a balloon, 3 is a shaft, 4 is a valve, 5 is a funnel, 6 is a bent portion, 7 is a wire, 8 is a wire protection tube, 9 is a balloon air tube, 10 is an abdomen, 11 is an abdominal hole, 12 is a bladder, and 13 is a bladder inner wall.

  As shown in FIG. 1, in the use of the bladder catheter of the present invention, a wire 7 that can be bent at an arbitrary angle is inserted from the funnel 5 or the valve 4 of the catheter, inserted through the shaft 3, and It is mounted between the balloon 2 at the tip. The wire 7 is coated with a chemically stable polymer material, and the shaft 3 into which the wire 6 is inserted can be bent at an arbitrary angle, and the bent shape can be maintained by the plasticity of the wire.

  As a result, the shaft 3 is bent at a right angle from the abdominal hole 11 and inserted into the bladder 12. The portion of the balloon 2 tip side hole 1 is inserted into the bladder inner wall surface 12 in a state perpendicular to the abdomen. As a result, the possibility that the distal end of the side hole 1 of the catheter contacts the bladder inner wall 14 is reduced. Therefore, the possibility of causing urinary tract disease or infection is reduced.

  In addition, since the catheter is inserted with the shaft 3 bent at a right angle at the abdominal hole 11, the unstable difference at the time of wearing that is displaced or removed is eliminated. Furthermore, when the catheter is fixed to the abdomen, the catheter is wrapped with a soft material and used as a skin damage protection material, so that the skin is not damaged.

DESCRIPTION OF SYMBOLS 1,14 ... Side hole 2,15 ... Balloon 3,16 ... Shaft 4,17 ... Valve 5,18 ... Funnel 6,19 ... Bending part 7,20 ... Wire 8, 21 ... Wire protection tube 9, 22 ... Balloon air tube 10, 23 ... Abdominal part 11, 24 ... Abdominal hole 12, 25 ... Bladder 13, 26 ... Inner wall of bladder

Claims (2)

  In a urethral bladder catheter having a shaft having a funnel at one end and a balloon at the other end, a wire coated with a polymer material is inserted between the funnel of the shaft and the balloon, A bladder catheter, wherein the shaft can be bent at an arbitrary angle.   The required position of the shaft is bent at a right angle, the end of the shaft on the side provided with the balloon is inserted into the bladder through the abdominal hole provided in the abdomen, and the shaft is bent from the bent portion. The method for using a bladder catheter according to claim 1, wherein a portion of the shaft provided with the funnel is in close contact with the abdomen.

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