WO2019049954A1 - Cathéter urinaire - Google Patents

Cathéter urinaire Download PDF

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Publication number
WO2019049954A1
WO2019049954A1 PCT/JP2018/033106 JP2018033106W WO2019049954A1 WO 2019049954 A1 WO2019049954 A1 WO 2019049954A1 JP 2018033106 W JP2018033106 W JP 2018033106W WO 2019049954 A1 WO2019049954 A1 WO 2019049954A1
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WO
WIPO (PCT)
Prior art keywords
lumen
deformation
catheter body
catheter
urine
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PCT/JP2018/033106
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English (en)
Japanese (ja)
Inventor
慎一郎 井上
増田　哲也
信夫 津久井
Original Assignee
大塚テクノ株式会社
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Application filed by 大塚テクノ株式会社 filed Critical 大塚テクノ株式会社
Priority to JP2019541007A priority Critical patent/JPWO2019049954A1/ja
Publication of WO2019049954A1 publication Critical patent/WO2019049954A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters

Definitions

  • the present invention relates to a urethral catheter.
  • a urinary catheter is known as a medical device for assisting the urine extraction of a patient who has difficulty in urination.
  • Patent Document 1 discloses a urethral catheter including a rod-shaped catheter body, a balloon portion formed at one end of the catheter body, and an operating portion formed at the other end of the catheter body.
  • the urinary catheter of Patent Document 1 is used, for example, by performing the following processes (1) to (4) in this order.
  • (1) Disinfect the area around the external urethral opening of the penis with a cotton ball soaked with a disinfectant such as povidone iodine.
  • (2) Open the package of the urinary catheter and apply a water-soluble lubricant to the urinary catheter.
  • (3) Carefully insert the urethral catheter from the external urethral opening. After the balloon reaches the bladder, a defined volume of sterile water is slowly infused into the balloon. (4) The urinary catheter is pulled slightly and indwelled until the balloon portion contacts the bladder neck.
  • Patent No. 5318925 gazette
  • the catheter may travel through a very narrow urethra, which may cause the patient to feel a great deal of pain.
  • An object of the present invention is to provide a urethral catheter that can reduce the pain felt by the patient during insertion and removal.
  • the urethral catheter of the present invention is formed in a catheter body consisting of a flexible tube having a tip placed in the patient's bladder and a base opposite to the tip, and the catheter body is formed of urine in the patient's bladder.
  • the deformation lumen may be formed into a flat shape that is curved along the circumferential surface of the catheter body in a radial sectional view of the catheter body.
  • the deformation lumen has an outer surface close to the circumferential surface of the catheter body and an inner surface opposite to the outer surface, and the length L 2 of the inner surface of the deformation lumen However, it may be longer than the length L 1 of the outer side surface.
  • the urine drainage lumen may be formed in an elliptical shape whose major axis is a direction along the longitudinal direction of the deformation lumen in a radial cross-sectional view of the catheter body.
  • the deformation lumen is an end of a radius line segment of a fan-shaped area having a central angle of 90 ° or less extending from the center of the urine drainage lumen in the radial cross section of the catheter body. And the other end.
  • the catheter body may have a constant outer diameter from the base to the tip.
  • the outer diameter of the catheter body may be 2 mm to 10 mm.
  • the urethral catheter according to the present invention is provided on the distal end side of the catheter body, and extends along the urine drainage lumen in the catheter body so as to communicate with the balloon portion expanding in the patient's bladder and the balloon portion.
  • the balloon may further include a liquid introducing lumen for introducing an inflating liquid into the balloon portion.
  • the deformation lumen may be disposed to face the fluid introduction lumen with the urine drainage lumen interposed therebetween.
  • the urethral catheter according to the present invention further includes a balloon portion provided on the distal end side of the catheter body and inflated in a patient's bladder, and the deformation lumen communicates with the balloon portion in the catheter body.
  • the balloon may be formed to extend along the urine drainage lumen and also serve as a fluid introduction lumen for introducing an inflation fluid into the balloon portion.
  • the first and second deformation lumens which also serve as the liquid introduction lumens, and the first deformation lumen, close the distal end portion of the catheter body. And a second deformation lumen.
  • the first deformation lumen and the second deformation lumen may be disposed to face each other across the urine discharge lumen.
  • the inner surfaces of the deformation lumens can be brought into close contact with each other by drawing air in the deformation lumen to obtain a negative pressure. .
  • the outer diameter of a catheter body can be made small. As a result, the pain felt by the patient at the time of insertion of the urethral catheter can be reduced.
  • FIG. 1 is a view showing a usage state of a urinary catheter according to an embodiment of the present invention, showing a balloon in an uninflated state in a bladder.
  • FIG. 2 is a view showing a usage state of the urinary catheter according to an embodiment of the present invention, showing a balloon inflated in a bladder.
  • FIG. 3 is a plan view of a urinary catheter according to an embodiment of the present invention.
  • FIG. 4 is a side view of a urinary catheter according to an embodiment of the present invention.
  • FIG. 5 is a cross-sectional view taken along the line VV of FIG.
  • FIG. 6 is an enlarged view of a portion surrounded by a two-dot chain line VI in FIG. 5 and showing a balloon unused state.
  • FIG. 5 is a cross-sectional view taken along the line VV of FIG.
  • FIG. 6 is an enlarged view of a portion surrounded by a two-dot chain line VI in FIG. 5 and showing a balloon unused state.
  • FIG. 7 is an enlarged view of a portion surrounded by a two-dot chain line VI in FIG. 5 and showing a balloon used state.
  • FIG. 8 is an enlarged view of a portion surrounded by a two-dot chain line VIII in FIG.
  • FIG. 9 is an enlarged view of a portion surrounded by a two-dot chain line IX in FIG.
  • FIG. 10 is a diagram showing the positional relationship between the first urine outlet and the second urine outlet.
  • FIG. 11 is a cross-sectional view taken along the line XI-XI in FIG. 3 and showing the catheter body in an uncompressed state.
  • FIG. 12 is a cross-sectional view taken along the line XI-XI in FIG.
  • FIG. 13 is a view showing a modified example of the catheter body, and shows a state in which the shape of the catheter body is not compressed.
  • FIG. 14 is a view showing a modified example of the catheter main body, in which the shape of the catheter main body is compressed.
  • FIG. 15 is a view showing a modified example of the catheter main body, and shows a state in which the shape of the catheter main body is not compressed.
  • FIG. 16 is a view showing a modified example of the catheter main body, in which the shape of the catheter main body is compressed.
  • FIG. 17 is a view showing a modified example of the catheter body, and shows a state in which the shape of the catheter body is not compressed.
  • FIG. 18 is a perspective view for explaining the shape feature of the balloon of the urinary catheter according to the embodiment of the present invention.
  • FIG. 19 is a perspective view for explaining the feature of the shape of the balloon of the urinary catheter according to one embodiment of the present invention.
  • FIG. 20 is a cross-sectional view for describing features of the shape of the balloon of the urinary catheter according to one embodiment of the present invention.
  • FIG. 21 is a view for explaining the effect of the urinary catheter according to the embodiment of the present invention.
  • FIG. 1 is a view showing a usage state of a urethral catheter 1 according to an embodiment of the present invention, showing a balloon 4 in a non-inflated state in a bladder.
  • FIG. 2 is a view showing a usage state of the urethral catheter 1 according to an embodiment of the present invention, and shows a state in which the balloon 4 is expanded in the bladder.
  • the urinary catheter 1 is an instrument for assisting in the urine conversion of a patient who has difficulty in urination, and includes a catheter body 2, an operation unit 3 and a balloon 4. As shown in FIG. 1, the catheter body 2 is used by inserting it into the urethra 8 of the human body 6 until the tip 5 reaches the bladder 7 of the human body 6 with the balloon 4 uninflated. After insertion, the balloon 4 is expanded and fixed to prevent the catheter body 2 from falling off, and the catheter body 2 is indwelled in the bladder 7.
  • the urine 10 accumulated in the bladder 7 is discharged from the operation unit 3 through the inside of the catheter main body 2 from the first urine outlet 9 formed in the distal end portion 5 of the catheter main body 2.
  • FIG. 3 is a plan view of a urinary catheter 1 according to an embodiment of the present invention.
  • FIG. 4 is a side view of a urinary catheter 1 according to an embodiment of the present invention.
  • FIG. 5 is a cross-sectional view taken along the line VV of FIG.
  • FIG. 6 is an enlarged view of a portion surrounded by a two-dot chain line VI in FIG. 5 and showing the balloon 4 in an unused state.
  • FIG. 7 is an enlarged view of a portion surrounded by a two-dot chain line VI in FIG. 5 and showing a state in which the balloon 4 is used.
  • FIG. 8 is an enlarged view of a portion surrounded by a two-dot chain line VIII in FIG. 5, but the catheter main body 2 is hidden.
  • FIG. 9 is an enlarged view of a portion surrounded by a two-dot chain line IX in FIG.
  • the urinary catheter 1 includes a catheter body 2, an operation unit 3 and a balloon 4.
  • the catheter body 2 is made of a flexible tube, and a hard tip 5 is attached to the tip thereof.
  • the catheter body 2 is inserted into the cap-like distal end portion 5 to form an inlay structure, and the mating surfaces of the inlay structures are fixed to each other by welding, bonding or the like.
  • the catheter main body 2 and the distal end portion 5 may be made of, for example, a rubber latex base such as natural rubber latex or synthetic rubber latex, a silicone base, or a base member such as a thermoplastic elastomer and subjected to surface treatment.
  • a rubber latex base such as natural rubber latex or synthetic rubber latex
  • a silicone base such as a silicone base
  • a base member such as a thermoplastic elastomer and subjected to surface treatment.
  • the surface treatment include a hydrophilic coating that imparts lubricity to the base member, a urethane coating / fluorine coating that imparts smoothness to the base member, and a silver coating that imparts antimicrobial properties to the base member. Two or more of these surface treatments may be used in combination.
  • the catheter body 2 is formed so as to extend along the longitudinal direction of the catheter body 2 such as a urine discharge lumen 11, a fluid introduction lumen 12 and a deformation lumen 13. It is done.
  • the urine drainage lumen 11 is a passage for guiding the urine 10 in the patient's bladder 7 to the outside of the patient, and is a tip from the base 14 (see FIG. 5) which is one longitudinal end of the catheter body 2 It penetrates to the portion 15 and is formed substantially at the center of the catheter body 2.
  • the urine discharge lumen 11 is in communication with a first urine discharge port 9 formed in the cylindrical distal end portion 5, and through the first urine discharge port 9, urine passes through the urine discharge lumen 11. It will enter.
  • the first urine outlet 9 is formed in an elliptical shape slightly elongated in the longitudinal direction of the catheter body 2 (see FIG. 9), and for example, a pair is provided to face in the radial direction of the catheter body 2 (See FIGS. 6 and 7).
  • the catheter body 2 communicates with the urine discharge lumen 11 on the opposite side of the first urine discharge port 9 with the balloon 4 in the longitudinal direction of the catheter body 2.
  • the urine outlet 37 is formed. More specifically, a second urine outlet 37 is formed to penetrate a first end 25 of the balloon 4 described later.
  • the second urine outlet 37 is formed in an oval shape slightly longer in the longitudinal direction of the catheter body 2, and, for example, opposed in the radial direction of the catheter body 2 A pair may be provided. Further, as shown in FIG. 10, the second urine outlet 37 is located at a position avoiding the fluid introducing lumen 12 and the deforming lumen 13 in the radial sectional view of the catheter body 2, and in this embodiment, the first urine outlet 37.
  • the urine outlet 9 is disposed at a position rotated by 90 °. Thereby, the second urine outlet 37 is prevented from interfering with the fluid introducing lumen 12 and the deforming lumen 13.
  • the fluid introducing lumen 12 is a passage for introducing an inflation fluid to the balloon 4 and is formed extending along the urine drainage lumen 11.
  • the fluid introducing lumen 12 is formed from the base 14 to a midway in the longitudinal direction of the catheter body 2 with the base 14 of the catheter body 2 as an open end, and the end is a dead end 16.
  • the dead end portion 16 is disposed between the first urine outlet 9 and the balloon circulation port 17 (described later). Further, in the circumferential surface 31 of the catheter main body 2, a balloon circulation port 17 communicating with the liquid introduction lumen 12 is formed.
  • the deformation lumen 13 is a passage for deforming the catheter body 2 to facilitate insertion and removal of the urinary catheter 1, and is formed extending along the urine drainage lumen 11.
  • the deformation lumen 13 is formed from the base 14 to a midway in the longitudinal direction of the catheter body 2 with the base 14 of the catheter body 2 as an open end, and the end is a dead end 18.
  • the dead end portion 18 is disposed between the first urine outlet 9 and the balloon communication port 17 and at the same longitudinal position as the dead end portion 16 of the fluid introducing lumen 12 in the longitudinal direction of the catheter body 2. ing.
  • the deformation lumen 13 does not circulate with the outside through an opening or the like such as the balloon circulation port 17, and circulates with the outside only at the open end thereof.
  • the operation unit 3 is a portion handled by an assistant such as a doctor or a nurse, and integrally includes a urine discharge port 19, a liquid introduction port 20, and a deformation port 21. As shown in FIGS. 3 to 5, in the operation unit 3, the liquid introduction port 20 and the deformation port 21 are symmetrical to each other from the peripheral surface of the funnel-shaped urine discharge port 19 extending along the extension of the catheter body 2. It may be formed in the shape of a fork that branches into.
  • the operation unit 3 may be made of, for example, the same material as the catheter body 2 and may be fixed to the catheter body 2 by insert molding on the catheter body 2.
  • the operation unit 3 may be made of a material different from that of the catheter body 2, and in this case, it may be fixed to the catheter body 2 by insert molding, welding, adhesion or the like.
  • the liquid introduction port 20 and the deformation port 21 are mutually independent. It is formed.
  • the urine discharge passage 22 communicates with the urine discharge lumen 11
  • the fluid introduction passage 23 communicates with the fluid introduction lumen 12
  • the deformation passage 24 communicates with the deformation lumen 13.
  • the urine discharge port 19 is connected to a container such as a urine collection bag for storing the discharged urine.
  • a container such as a urine collection bag for storing the discharged urine.
  • valves 39 and 40 for connecting a syringe are provided at the tips of the liquid introduction port 20 and the deformation port 21.
  • An assistant such as a doctor or a nurse connects the syringe filled with the liquid for balloon inflation to the valve 39 and pushes the plunger of the syringe to pass the liquid introduction passage 23 and the liquid introduction lumen 12 Liquid can be injected into the balloon 4.
  • an assistant such as a doctor or a nurse connects an empty syringe to the valve 40 and pulls the plunger of the syringe to store the air in the deformation passage 24 and the deformation lumen 13 in the syringe,
  • the pressure in the deformation lumen 13 can be negative.
  • the balloon 4 has a first end 25 fixed so as to surround the catheter body 2 and a second end 26 closer to the distal end 15 than the first end 25, and the first end 25 and the second end
  • An inflatable portion 27 is provided between the portion 26 and is a membrane that spherically inflates in the bladder 7 of the patient.
  • the balloon 4 is connected to the balloon communication port 17 inside the inflation portion 27.
  • the first end 25 and the second end 26 of the balloon 4 may be fixed to the catheter body 2 by welding, adhesion or the like, for example.
  • rubber latex, silicone, a thermoplastic elastomer etc. are mentioned, for example.
  • a plurality of ribs 28 may be provided on the inner surface of the inflating portion 27 along the circumferential direction of the catheter body 2.
  • the plurality of ribs 28 are each formed in an annular shape so as to surround the catheter body 2 and are spaced along the longitudinal direction of the catheter body 2.
  • an assistant such as a doctor or a nurse injects a dilation fluid such as sterile distilled water into the fluid introduction passage 23 with a syringe, whereby the dilation fluid is introduced into the liquid introduction lumen 12 and the balloon flow port 17.
  • a dilation fluid such as sterile distilled water
  • the balloon 4 expands spherically as shown in FIG.
  • FIG. 11 is a cross-sectional view taken along the line XI-XI in FIG. 3, and shows the catheter body 2 in an uncompressed state.
  • FIG. 12 is a cross-sectional view taken along the line XI-XI in FIG. 3, and shows a state in which the shape of the catheter body 2 is compressed.
  • FIG. 13 is a view showing a modified example of the catheter body 2 and shows a state in which the shape of the catheter body 2 is not compressed.
  • FIG. 14 is a view showing a modified example of the catheter main body 2 and shows a state in which the shape of the catheter main body 2 is compressed.
  • the catheter body 2 may be entirely constituted by a flexible soft member such as a rubber latex base or a silicone base,
  • the outer layer 29 may be in contact with the inner wall (mucosal portion) of the urethra 8 and the inner layer 30 formed on the inner side of the outer layer 29 and forming the inner wall of the urine drainage lumen 11.
  • the inner layer 30 is preferably made of a member harder than the outer layer 29.
  • the catheter main body 2 has a configuration in which a tube-shaped core material composed of the inner layer 30 having relatively rigidity (stiffness) is coated with the outer layer 29 which is softer and more deformable than the core material.
  • the rigidity of the inner layer 30 makes it easy for an assistant such as a doctor or nurse who is inserting the urinary catheter 1 to insert the urinary catheter 1 due to the rigidity of the inner layer 30.
  • the softness of the portion in contact with the inner wall of the urethra 8 has the advantage of reducing pain.
  • the outer layer 29 may be made of, for example, a rubber latex base such as the above-mentioned natural rubber latex or synthetic rubber latex, or a base member such as silicone base.
  • the inner layer 30 may be made of, for example, hard silicone, thermoplastic elastomer or the like.
  • the inner layer 30 may be subjected to the above-described surface treatment, similarly to the outer layer 29.
  • the catheter body 2 has a constant outer diameter from the base 14 to the distal end portion 15 (see FIG. 5), for example, an outer diameter of 2 mm to 10 mm.
  • the urine drainage lumen 11 is formed in a circular shape at the center of the catheter main body 2 in a radial cross-sectional view.
  • the inner diameter of the urine drainage lumen 11 may be, for example, about 2 mm to 5 mm.
  • the fluid introducing lumen 12 is formed in a circular shape having a diameter smaller than that of the urine discharging lumen 11 around the urine discharging lumen 11.
  • the inner diameter of the liquid introducing lumen 12 may be, for example, about 0.1 mm to 0.8 mm.
  • the deformation lumen 13 is disposed around the urine discharge lumen 11 so as to face the liquid introduction lumen 12 across the urine discharge lumen 11.
  • the deformation lumen 13 is formed in a flat shape that is curved along the circumferential surface 31 of the catheter body 2 in this embodiment. More specifically, in the radial direction cross-sectional view of the catheter main body 2, the deformation lumen 13 is a radial line segment R 1 of the fan-shaped region 32 whose central angle ⁇ spreads from the center C of the urine drainage lumen 11 is 90 ° or less on R 2, it is formed in a flat shape having one end portion 33 and the other end portion 34.
  • an assistant such as a doctor or a nurse pulls the air in the deformation lumen 13 with a syringe to make it negative pressure, whereby the outer surface of the deformation lumen 13 is obtained. 35 and the inner surface 36 can be in close contact. Thereby, since a part of catheter body 2 can be compressed, the outside diameter of catheter body 2 can be made small. As a result, the pain felt by the patient when the urinary catheter 1 is inserted can be reduced.
  • the deformation lumen 13 is preferably formed in the relatively soft outer layer 29. Thereby, the catheter body 2 can be easily compressed.
  • deformation lumen 13 may be formed in the catheter body 2 as shown in FIGS. 11 and 12, but a plurality of deformation lumens 13 may be formed as shown in FIGS. 13 and 14. .
  • one end of the deformation lumen 13 (second deformation lumen) may be blocked by the dead end 18 as described above, and the other deformation lumen 13 (first deformation lumen) may be closed.
  • the lumen) may be formed to communicate with the balloon 4 through the balloon communication port 17 and may also serve as the fluid introduction lumen 12. Even when the fluid introduction lumen 12 is also used, the balloon 4 is occluded so that the fluid is communicated with the outside only at the open end of the fluid introduction lumen 12, so that the inside of the lumen can be made negative pressure.
  • the plurality of deformation lumens 13 may be disposed to face each other with the urine discharge lumen 11 interposed therebetween. If a plurality of deformation lumens 13 are formed, the catheter body 2 can be compressed to a smaller diameter.
  • the deformation lumen 13 may be configured as shown in FIG. 15 and FIG. Specifically, in the radial cross section of the catheter body 2, the length L 2 of the inner side surface 36 of the deformation lumen 13 may be longer than the length L 1 of the outer side surface 35 (L 2 > L 1 ).
  • the length L- 1 of the outer surface 35 of the deformation lumen 13 having such a shape (an upper line segment connecting one end 33 and the other end 34 of the deformation lumen 13 in the deformation lumen 13 on the upper side of FIG. ) May be, for example, 2 mm to 4 mm.
  • the inner surface 36 of the deformation lumen 13 defines a flat deformation lumen 13 along the circumferential surface 31 of the catheter body 2 in cooperation with the outer surface 35, but the shape is similar to the outer surface 35.
  • the arc is different from the arc 31 along which the peripheral surface 31 is kept at a constant distance.
  • the inner side surface 36 of the deformation lumen 13 is recessed such that a portion thereof is separated from the circumferential surface 31 toward the inward region of the catheter 2.
  • the inner side surface 36 of the deformation lumen 13 is arranged along the outer side surface 35 from each of the one end 33 and the other end 34 of the deformation lumen 13 (with a constant distance from the circumferential surface 31).
  • a pair of arcuate projection 46 toward the one direction D 1, (in this modification, the direction of the center C) inner region of the catheter 2 in the vicinity of the first direction D 1 recess away from the peripheral surface 31 toward the It is formed in the shape of a wave which has a concave portion 45 integrally.
  • the length L- 2 of the wavy inner surface 36 is longer than the length L- 1 of the arc-shaped outer surface 35.
  • the length L- 2 of the wavy inner surface 36 (the length of the lower segment connecting the one end 33 and the other end 34 of the deformation lumen 13 in the upper deformation lumen 13 in FIG. 15) is, for example, , 2.5 mm to 4.5 mm.
  • the distance (thickness T 1 ) between the recess 45 of the inner side surface 36 of the deformation lumen 13 and the inner peripheral surface 47 of the urine discharge lumen may be, for example, 0.4 mm to 0.6 mm.
  • the distance (thickness T 2 ) between the convex portion 46 of the inner side surface 36 of the deformation lumen 13 and the inner circumferential surface 47 of the urine discharge lumen may be, for example, 0.7 mm to 0.9 mm.
  • the urine discharge lumen 11 is formed in an elliptical shape whose major axis is a direction along the longitudinal direction of the deformation lumen 13 in the radial cross section of the catheter body 2. More specifically, the direction along the second direction D 2 may be an oval shape with the major axis direction. In this modification, the urine discharge lumen 11 is formed into an elliptical shape having the ends 48 and 49 of the major axis on the side away from the outside (center C) from the one end 33 and the other end 34 of the deformation lumen 13. It is formed.
  • the length L 2 of the inner side surface 36 of the deformation lumen 13 is longer than the length L 1 of the outer side surface 35. Therefore, when a negative pressure by pulling air deforming lumen 13 as shown in FIG. 16, flexures peripheral surface 31 of the catheter body 2 is a 1 direction, a 2 direction, b in the first direction and b 2 directions It is compressed too much. As a result, it is possible to suppress the occurrence of a so-called excess of meat in which a part of the circumferential surface 31 of the catheter body 2 is angular.
  • the outer surface 35 approaching the inner surface 36 due to compression is selected as the pair of convex portions 46 of the inner surface 36 Contact (not in contact with the recess 45).
  • selectively applying a load to the end portion 50 and 51 of the minor axis of the inner circumferential surface 47 of the urinary drainage lumen 11 Can.
  • the urine discharge lumen 11 is deformed in the c 1 direction, c 2 direction, d 1 direction and d 2 direction, and the end portions 50 and 51 are protruded into the urine discharge lumen 11.
  • This enables further cross-sectional compression of the catheter body 2.
  • the diameter of the catheter body 2 before compression is D c1
  • the diameter D c2 of the catheter body 2 after compression can be about 70 to 80%.
  • the deformation lumen 13 has a flat shape along the circumferential surface 31 of the catheter main body 2 as shown in FIG. 17, it may not be curved along the circumferential surface 31.
  • FIG. 18 and FIG. 19 are perspective views for explaining the characteristics of the shape of the balloon 4 of the urinary catheter 1, and show a state in which the balloon 4 is expanded.
  • FIG. 18 is a view of the balloon 4 viewed from the side of the tip 15 of the catheter body 2
  • FIG. 19 is a view of the balloon 4 viewed from the opposite side of the tip 15 of the catheter body 2.
  • FIG. 20 is a cross-sectional view for describing the feature of the shape of the balloon of the urinary catheter 1.
  • FIG. 21 is a view for explaining the effect of the urinary catheter 1.
  • the balloon 4 has linear recesses 38 (concave lines) extending along the circumferential surface from the first end 25 to the second end 26.
  • the recess 38 is formed to start at the first end 25 and end at the second end 26.
  • a constant space 41 is formed in a state where the expanded portion 27 of the expanded balloon 4 is in contact with the inner wall (for example, the bladder neck) of the bladder 7, between the expanded portion 27 and the inner wall of the bladder 7
  • a constant space 41 is formed.
  • the second urine outlet 37 is formed at a predetermined position of the first end 25 of the balloon 4 so as to be exposed to the space 41.
  • the recesses 38 are formed at equal intervals in the annular direction along the circumferential surface 31 of the catheter body 2 as shown in FIG. For example, in this embodiment, a total of three are formed at intervals of 120 ° around the center C (the center of the urine drainage lumen 11) in the radial cross section of the catheter body 2.
  • the number of recesses 38 is not limited to three, and may be four or more.
  • the inner wall of the balloon 4 in the expanded state projects inward with respect to the flat region 42 other than the portion where the recess 38 is formed. It is formed as a convex portion 43.
  • "balloon 4 '" of FIG. 20 shows a state in which the balloon 4 is not inflated. In this state, the convex portion 44 is formed at a position corresponding to the concave portion 38 on the outer peripheral surface of the balloon 4'. There is.
  • the film thickness T 1 (height of the convex portions 43 and 44) of the portion where the concave portion 38 is formed is formed thicker than the film thickness T 2 of the other portion (planar region 42).
  • the thickness T 1 is a 0.3 mm ⁇ 1.5 mm
  • thickness T 2 is 0.05 mm ⁇ 0.7 mm. That is, when the balloon 4 is inflated, the convexity 44 is formed when the balloon 4 is not inflated, so that there is a difference in the degree of expansion between the convexity 44 and the other parts. A recess 38 is formed at the formation site.
  • Liquid level of the urine 10 in the bladder 7 is, as the liquid surface S 1 in FIG. 21, if a position higher than the first urine output port 9, the urine 10 via the first urine output port 9 It can be discharged.
  • the liquid surface S 2 in FIG. 21 if a position lower than the liquid level first urine outlet 9 of urine 10, it is discharged through the first urine output port 9 is difficult is there.
  • the urethral catheter 1 provided with the balloon 4 is taken as an example, but the balloon 4 is provided from the viewpoint of "reducing pain felt by the patient at the time of insertion and removal" of the present invention. You do not have to.

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Abstract

L'invention concerne un cathéter urinaire permettant d'atténuer la douleur ressentie par un patient pendant l'insertion et le retrait du cathéter urinaire. Selon la présente invention, le cathéter urinaire comprend : un corps de cathéter (2) comprenant un tube souple qui a une partie d'extrémité distale devant être placée à l'intérieur de la vessie urinaire d'un patient et une partie de base qui se situe sur le côté opposé à la partie d'extrémité distale ; une lumière de sortie d'urine (11) pour guider l'urine se trouvant dans la vessie urinaire du patient vers l'extérieur du corps du patient, la lumière de sortie d'urine (11) étant formée dans le corps de cathéter (2) ; et une lumière de déformation (13) plate formée dans le corps de cathéter (2) de façon à s'étendre le long de la lumière de sortie d'urine (11) de sorte que le côté de partie d'extrémité distale est bloqué, la lumière de déformation (13) suivant une surface périphérique (31) du corps de cathéter (2) dans une vue en coupe transversale dans le sens radial du corps de cathéter (2).
PCT/JP2018/033106 2017-09-07 2018-09-06 Cathéter urinaire WO2019049954A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021203766A1 (fr) * 2020-04-08 2021-10-14 微创优通医疗科技(嘉兴)有限公司 Cathéter médical et système médical
KR20230026172A (ko) * 2021-08-17 2023-02-24 주식회사 케이아이플렉스 벌룬형 요도 카테터

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11507862A (ja) * 1996-04-10 1999-07-13 バイオリンク コーポレーション デュアルルーメン型カテーテル及びその使用方法
US8088078B2 (en) * 2003-02-17 2012-01-03 Pp-Technologies Ag Methods and apparatus for measuring pressure profiles
US20120059337A1 (en) * 2010-09-01 2012-03-08 Eran Eilat Catheter with asymmetric or collapsible-expandable cross-section
JP2013233362A (ja) * 2012-05-11 2013-11-21 Terumo Corp スタイレット及び尿道カテーテルセット

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11507862A (ja) * 1996-04-10 1999-07-13 バイオリンク コーポレーション デュアルルーメン型カテーテル及びその使用方法
US8088078B2 (en) * 2003-02-17 2012-01-03 Pp-Technologies Ag Methods and apparatus for measuring pressure profiles
US20120059337A1 (en) * 2010-09-01 2012-03-08 Eran Eilat Catheter with asymmetric or collapsible-expandable cross-section
JP2013233362A (ja) * 2012-05-11 2013-11-21 Terumo Corp スタイレット及び尿道カテーテルセット

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021203766A1 (fr) * 2020-04-08 2021-10-14 微创优通医疗科技(嘉兴)有限公司 Cathéter médical et système médical
KR20230026172A (ko) * 2021-08-17 2023-02-24 주식회사 케이아이플렉스 벌룬형 요도 카테터
KR102588174B1 (ko) * 2021-08-17 2023-10-19 주식회사 케이아이플렉스 벌룬형 요도 카테터

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