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WO2006129419A1 - Cathéter à ballon - Google Patents

Cathéter à ballon Download PDF

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Publication number
WO2006129419A1
WO2006129419A1 PCT/JP2006/307255 JP2006307255W WO2006129419A1 WO 2006129419 A1 WO2006129419 A1 WO 2006129419A1 JP 2006307255 W JP2006307255 W JP 2006307255W WO 2006129419 A1 WO2006129419 A1 WO 2006129419A1
Authority
WO
WIPO (PCT)
Prior art keywords
balloon
catheter
check valve
catheter body
cylindrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2006/307255
Other languages
English (en)
Japanese (ja)
Inventor
Youichi Tamenori
Masatoshi Niunoya
Takashi Furukawa
Shouji Sakakiyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Publication of WO2006129419A1 publication Critical patent/WO2006129419A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • A61M2025/1043—Balloon catheters with special features or adapted for special applications
    • A61M2025/1054—Balloon catheters with special features or adapted for special applications having detachable or disposable balloons

Definitions

  • the present invention is used by being inserted into a living body for examinations and treatments, and after smoothly performing expansion of a stenosis, blocking of a hole formed in a living body cavity, tissue peeling, and the like.
  • the present invention relates to a balloon catheter that can be stably maintained for a long time.
  • the balloon catheter In order to treat the stenosis in the blood vessel, specifically, the balloon catheter is inserted into the blood vessel, and the balloon part of the balloon member is expanded to expand the stenosis of the blood vessel.
  • a balloon catheter In a surgical method for closing a hole formed in a blood vessel or used in a blood vessel, a balloon catheter is introduced at a position where the hole is formed in the blood vessel, and the balloon part of the noren member is expanded to expand the blood vessel. It is used to close the hole, or it is used for diagnosis and treatment such as expansion of stenosis and tissue detachment by introducing a Norne catheter into a living body cavity endoscopically.
  • the balloon member in a state where the balloon portion is inflated is separated from the catheter body force and placed in the living body cavity, and the separated balloon member is used to prevent the constricted portion of the living body cavity.
  • a balloon catheter that can maintain an expanded state or a closed state of a living body cavity for a long time has been proposed.
  • the forceps is in a state where the balloon portion is inflated. It is possible to introduce other devices into the channel, which is very useful in terms of expanding the range of diagnosis and treatment.
  • Patent Document 1 a balloon catheter having an in-vivo indwelling member at the tip is fused at or near the junction between the in-vivo indwelling member and the catheter body. Location and heating means for fusing the location to the location A balloon catheter is proposed.
  • the balloon catheter requires an electrode and a high-frequency current generator as its heating means, and the structure of the balloon catheter is of course complicated.
  • the problem is that the task of separating the lines is complicated.
  • Patent Document 1 Japanese Patent Publication No. 60-30225
  • the present invention is used by being inserted into a living body cavity for examination or treatment, and can smoothly expand a stenosis part, block a hole formed in the living body cavity, exfoliate a tissue, and the like.
  • a balloon catheter capable of stably maintaining the expanded state of the stenosis and the closed state of the living body cavity by placing the balloon member in the living body cavity while maintaining the inflated state of the balloon part. provide.
  • the balloon catheter of the present invention is a catheter body and a lane member that is detachably connected to the distal end portion of the catheter body, the distal end is closed and a proximal end portion is connected to the distal end portion of the catheter body.
  • a cylindrical portion connected in a separable manner, a balloon portion that is integrally provided on the outer peripheral surface of the cylindrical portion, and a balloon portion that can be expanded and contracted, and is formed in the cylindrical portion and supplied into the cylindrical portion.
  • a balloon member comprising a through hole for supplying a fluid to be supplied into the balloon part and a check valve for preventing leakage of the fluid from the balloon part is provided.
  • the balloon catheter includes a check valve disposed in the through hole of the cylindrical portion.
  • the balloon catheter is characterized by including a check valve disposed in the proximal end opening of the tubular portion.
  • the balloon catheter includes a check valve disposed in a through hole or a base end opening of the cylindrical portion and formed with a tongue-shaped elastic valve body force.
  • the balloon catheter is open toward the catheter body side, is formed of a bottomed cylindrical body having elasticity, and is opened by the fluid pressure supplied in the direction of the balloon portion.
  • a slit portion that is closed by a fluid pressure from the bottom is provided with a check valve formed on the bottomed cylindrical body.
  • a check valve made of a bottomed cylindrical body that opens toward the catheter body side and has elasticity, and a rod-like member that is integrally provided at the distal end of the catheter body.
  • a catheter main body having an outer diameter that can be inserted into the cylindrical portion of the balloon member, and a proximal end opening end surface of the cylindrical portion of the balloon member that is fitted on the catheter main body. And an outer cylinder that is in contact with the outer cylinder.
  • the balloon catheter includes a screw portion that is formed at the distal end portion of the catheter main body and the proximal end portion of the cylindrical portion of the balloon member and that can be screwed together.
  • the balloon catheter is provided with a protrusion and a locking groove that are provided at the outer peripheral portion of the distal end of the catheter body and the proximal end portion of the cylindrical portion of the balloon and that can be engaged and disengaged with each other. It is characterized by that.
  • the balloon catheter of the present invention is a catheter member and a lane member detachably connected to the distal end portion of the catheter body, the distal end is closed and the proximal end portion is at the distal end portion of the catheter body.
  • a cylindrical portion connected in a separable manner, a balloon portion that is integrally provided on the outer peripheral surface of the cylindrical portion, and a balloon portion that can be expanded and contracted, and is formed in the cylindrical portion and supplied into the cylindrical portion.
  • the balloon catheter includes a check valve disposed in the through hole of the tubular portion, the fluid that has flowed into the balloon portion of the balloon member leaks out of the balloon portion. It is possible to reliably maintain the inflated state of the balloon portion.
  • the balloon catheter when the balloon catheter is provided with a check valve disposed in the through hole or the base end opening of the tubular portion and formed with a tongue-shaped elastic valve body force, While it does not prevent the fluid from flowing into one part, it can reliably prevent the fluid that has flowed into the balloon part from leaking out of the balloon part, thus ensuring the inflated state of the balloon part. Can be maintained for a long time.
  • the balloon catheter is open toward the catheter body side, is formed of a bottomed cylindrical body having elasticity, and is opened by the fluid pressure supplied in the direction of the balloon portion.
  • the slit portion that is closed by the fluid pressure from the bottom is provided with a check valve formed in the bottomed cylindrical body.
  • the balloon member is separated from the catheter body and then flows into the balloon. It is possible to prevent the discharged fluid from flowing into the living body cavity, and to reduce the burden on the patient who has inserted the balloon catheter.
  • a check valve made of a bottomed cylindrical body that opens toward the catheter body and has elasticity, and a rod-like member that is integrally provided at the distal end of the catheter body.
  • the rod-shaped member penetrates the check valve Therefore, when the inside of the balloon portion and the inside of the catheter body communicate with each other and the check valve is closed by removing the stick-like member from the check valve, the stick-like member is used as the check valve.
  • the check valve is opened and closed by penetrating or removing it, and the check valve is reliably opened and closed.
  • a slit is formed in the hemispherical portion of the check valve.
  • the balloon and the catheter body communicate with each other.
  • the check valve is configured to close by removing the rod-shaped member from the slit, the check valve is opened and closed by removing the rod-shaped member. It is supposed to be.
  • a catheter main body having an outer diameter that can be inserted into the cylindrical portion of the balloon member, and a proximal end opening end surface of the cylindrical portion of the balloon member that is fitted to the catheter main body. If the rod-shaped member is withdrawn with the check valve force, the outer tube is brought into contact with the proximal end opening end surface of the balloon member so that the balloon member is in the pull-out direction of the rod-shaped member. Displacement can be reliably prevented. Therefore, the valve member can be reliably closed by withdrawing the rod-shaped member from the check valve, and the balloon member is prevented from moving when the rod-shaped member is withdrawn by the check valve force, so that the balloon member is removed from the living body cavity. It can be reliably placed in a predetermined position.
  • the balloon catheter includes a screw portion that is formed at the distal end portion of the catheter body and the proximal end portion of the cylindrical portion of the balloon member and that can be screwed together.
  • the balloon member is simply rotated by rotating the catheter body about its axis and releasing the screwing between the screw portions provided at the distal end portion of the catheter body and the proximal end portion of the cylindrical portion of the balloon member.
  • the catheter body force can be easily separated, and the diagnosis and treatment using the balloon force tail can be smoothly performed to reduce the burden on the patient.
  • the balloon catheter is provided with a protrusion and a locking groove which are provided at the outer peripheral portion of the distal end of the catheter main body and the proximal end portion of the cylindrical portion of the balloon and which can be engaged and disengaged with each other.
  • a protrusion and a locking groove which are provided at the outer peripheral portion of the distal end of the catheter main body and the proximal end portion of the cylindrical portion of the balloon and which can be engaged and disengaged with each other.
  • FIG. 1 is a longitudinal sectional view showing a balloon catheter of the present invention.
  • FIG. 2 is a partially cutaway perspective view showing a balloon catheter of the present invention.
  • FIG. 3 is a longitudinal sectional view showing an embodiment of the balloon catheter of FIG. 1 in use.
  • FIG. 4 is a longitudinal sectional view showing an embodiment of the balloon catheter in FIG. 1 in use.
  • FIG. 5 is a longitudinal sectional view showing an embodiment of the balloon catheter in FIG. 1 in use.
  • FIG. 6 is a longitudinal sectional view showing another example of a balloon member.
  • FIG. 7 is a schematic perspective view showing another example of the connection structure between the catheter body and the tubular portion.
  • FIG. 10 is a partially cutaway perspective view showing the balloon catheter of FIG. 9.
  • FIG. 11 is a longitudinal sectional view showing another example of the balloon catheter of the present invention.
  • FIG. 13 is a partially cutaway perspective view showing the balloon catheter of FIG. 11.
  • FIG. 15 is a perspective view showing a check valve.
  • FIG. 17 is a longitudinal sectional view showing another example of the balloon catheter of the present invention.
  • a balloon member 2 is detachably connected to the distal end portion of the catheter body 1.
  • This balloon member 2 has a bottomed cylindrical tubular portion 21 whose distal end portion is closed and a proximal end portion is detachably connected to the distal end portion of the catheter body 1, and an outer periphery of the tubular portion 21. It comprises an inflatable / deflated balloon portion 22 provided integrally on the surface.
  • the cylindrical portion 21 is formed in a bottomed cylindrical shape having a certain length in which the inner diameter matches the inner diameter of the catheter body 1 and the outer diameter matches the outer diameter of the catheter body 1.
  • a threaded portion 23 that can be screwed forward and backward to the threaded portion 12 of the catheter body 1 is formed on the inner peripheral surface of the proximal end portion of the tubular portion 21.
  • a noren portion 22 is provided in a body-like manner on the outer peripheral surface of the cylindrical portion 21.
  • the balloon portion 22 has a length slightly shorter than the length of the cylindrical portion 21 and has an elastic cylindrical body 24 having both ends opened. Both ends 24a, 24a of the cylindrical body 24 are hermetically fixed to the outer peripheral surface of the cylindrical portion 21 opposite to the entire end 24a. It is configured by Note that the method for fixing the both end portions 24a, 24a of the cylindrical body 24 to the outer peripheral surface of the cylindrical portion 21 is not particularly limited, and in addition to the method by thermal fusion, a method using an adhesive, a thread, etc. The method of tying up using can be mentioned.
  • the cylindrical portion 21 is provided with a circular through hole 26 penetrating between the inner and outer peripheral surfaces thereof, and is supplied into the cylindrical portion 21 through the through hole 26.
  • the fluid can be supplied into the balloon portion 22.
  • the balun portion 22 can be expanded and contracted by supplying a fluid through the through hole 26 or discharging the fluid from the space 25.
  • the material constituting the cylindrical body 24 is not particularly limited as long as it is elastically deformable.
  • natural rubber silicone rubber; urethane rubber; polyolefin elastomer, polystyrene elastomer.
  • Thermoplastic elastomers such as polyamide elastomers; Polyolefins such as polyethylene, polypropylene, ethylene a olefin copolymers such as ethylene propylene copolymers, propylene olefin resins, ethylene acetate butyl copolymers, etc. Examples thereof include rosin, soft polyvinyl chloride, polyurethane, polyisoprene and the like, and natural rubber, silicone rubber, and urethane rubber are preferable because the balloon part 22 can be easily expanded and contracted in the living body cavity.
  • examples of the fluid include gases such as air, and liquids such as water, physiological saline, and gel-like medicines, and means for supplying the fluid into the cylindrical portion 21 through the catheter body 1.
  • a fluid adjusting tool such as a syringe barrel, which has been conventionally used, is used.
  • a tongue-shaped elastic valve element 27 having a size capable of completely closing the through hole 26 is provided as a check valve.
  • the tongue-shaped elastic valve element 27 has a base end portion fixed to the outer opening end surface of the through hole 26, and a portion other than the base end portion can be displaced inward and outward by elastic deformation. It has been.
  • the elastic valve element 27 When the internal pressure in the space portion 25 of the balloon portion 22 is greater than the internal pressure of the cylindrical portion 21, the elastic valve element 27 is caused to pass through the through-hole 26 by the fluid pressure in the space portion 25 of the balloon portion 22. It is comprised so that it may be in the state closed completely.
  • Polyolefin resins such as coalescence, propylene ⁇ -olefin copolymer, ethylene acetate butyl copolymer, polyester resins such as polyethylene terephthalate, polychlorinated butyl, polyurethane, polyamide, polyimide, natural rubber, silicone rubber And elastomers such as urethane rubber, polyolefin-based elastomer, polystyrene-based elastomer, and polyamide-based elastomer.
  • the supply of fluid into the tubular portion 21 through the lumen 11 of the catheter body 1 is stopped.
  • the pressure in the space portion 25 of the balloon portion 22 is The elastic valve element 27 is pressed against the outer opening end face of the through hole 26 by the internal pressure of the space part 25 of the balloon part 22 due to the pressure higher than the internal pressure, and the through hole 26 is completely closed.
  • the fluid force that has flowed into the S is reliably prevented from leaking out of the balloon portion 22, and the inflated state of the balloon portion 22 is reliably maintained.
  • the balloon member 2 placed in the living body cavity B leaks out of the space portion 25 of the fluid force balloon portion 22 press-fitted into the space portion 25 of the balloon portion 22. Therefore, the balloon portion 22 can stably maintain the inflated state for a long time, and can reliably expand the constricted portion B1 of the living body cavity B.
  • the cylindrical portion 21 is formed in a bottomed cylindrical shape, and a cylindrical body 24 having both ends opened is fitted into and integrated with the cylindrical portion 21.
  • the cylindrical cylindrical portion 31 having both ends opened has a length slightly longer than the length of the cylindrical portion 31 as shown in FIG.
  • each of the distal end portion 32a and the proximal end opening portion 32b of the bottomed cylindrical body 32 is provided.
  • the balloon portion 22 may be integrally attached to the outer peripheral surface of 21.
  • the configurations other than those described above are the same as the balloon catheter A shown in FIGS. Therefore, the description is omitted.
  • the catheter body 1 and the balloon member 2 can be connected and separated from each other at the opposite end portions of the catheter body 1 and the balloon member 2 by screw portions 12, 23.
  • an annular lock having a constant width and a constant depth on the inner peripheral surface of the proximal end opening of the cylindrical portion 21 is illustrated.
  • the catheter body 1 is formed with a groove 21a and an insertion groove 2lb having a constant width and a constant depth that communicates in a state orthogonal to the locking groove 21a and opens at the proximal end surface of the tubular portion 21.
  • a protrusion 13 that can be inserted into the insertion groove 2 lb and can be detachably engaged with the engagement groove 21a may be provided on the outer peripheral surface of the front end. 7 and 8, the balloon portion 22 is omitted for convenience of explanation.
  • the distal end portion of the catheter body 1 is inserted into the proximal end opening of the tubular portion 21 with the protrusion 13 of the catheter body 1 aligned with the insertion groove 21b of the tubular portion 21, and the catheter is inserted.
  • the protrusion 13 of the main body 1 is positioned in the locking groove 21a of the cylindrical portion 21, and in this state, the catheter body 1 is rotated by a predetermined angle around its axis.
  • the protrusion 13 of the catheter body 1 is detachably locked in the locking groove 21a of the cylindrical portion 21 so that the catheter body 1 and the balloon member 2 are detachably connected. Since configurations other than those described above are the same as those of the balloon catheter A shown in FIGS. 1 to 5, the same reference numerals are given and description thereof is omitted.
  • the cylindrical portion 21 A check valve may be provided at the proximal end opening.
  • an annular valve seat 41 is provided on the inner peripheral surface of the base end opening of the cylindrical portion 21 over the entire circumference, and the upper end of the inner surface of the valve seat 41 is By attaching the upper end edge of the tongue-shaped elastic valve element 42 having a size capable of completely closing the opening of the valve seat 41, a check valve is provided at the proximal opening of the tubular part 21. It is arranged.
  • the elastic valve body 42 causes the upper end fixing portion to be moved by the fluid pressure acting in the tubular portion 21. As a fulcrum, it is elastically bent by inward force and opens the proximal end opening of the tubular portion 21.
  • the fluid supplied into the tubular part 21 through the lumen 11 of the catheter body 1 is tubular.
  • the balloon part 22 is inflated by flowing into the space part 25 of the balloon part 22 through the through hole 26 of the part 21.
  • the material of the elastic valve element 42 is not particularly limited as long as it is elastically deformable, and the same material as the elastic valve element 27 of the balloon catheter A shown in Figs. 1 to 5 is used. be able to. Further, the same structure as the balloon catheter A shown in FIG. 1 to FIG.
  • the structure shown in FIGS. 11 to 13 may be used as the structure in which the check valve is provided in the proximal end opening of the cylindrical portion 21.
  • the check valve 5 includes an elastic bottomed cylindrical body 50 having an outer diameter that matches the inner diameter of the cylindrical portion 21 and a bottom portion that is formed in a convex arc shape. With the body 50 facing the proximal end opening toward the catheter body 1 side, the base end outer peripheral surface of the bottomed cylindrical body 50 is completely and airtightly fixed to the base end inner peripheral surface of the cylindrical portion 21. It ’s all together.
  • the bottom outer peripheral surface of the bottomed tubular body 50 is cut in the radial direction of the bottomed tubular body 50 to open it by the fluid pressure supplied to the balloon portion 2 side, and the balloon
  • the check valve 5 is configured by providing the bottomed cylindrical body 50 with a single slit 51 that is closed by the fluid pressure on the part 22 side.
  • the material of the bottomed cylindrical body 50 is not particularly limited as long as it is elastically deformable, and is the same material as that of the elastic valve body 27 of the balloon catheter A shown in Figs. Can be used.
  • the same reference numerals are given to the same structure as that of the none catheter A shown in FIGS. 1 to 5, and the description thereof is omitted.
  • the check valve 6 has elasticity that the outer diameter matches the inner diameter of the cylindrical portion 21 and the bottom portion is formed in a convex arc shape.
  • the bottomed tubular body 60 has a force, and the bottomed tubular body 60 is in a state where the base end opening is directed toward the catheter body 1 side.
  • the 21 base end inner peripheral surfaces are firmly and hermetically bonded together.
  • a slit 61 that penetrates between the both surfaces of the bottomed cylindrical body 60 is formed.
  • the catheter body 1 ′ is formed in a long cylindrical shape whose outer diameter matches the inner diameter of the cylindrical portion 21 of the balloon member 2.
  • a rod-like member 14 having a predetermined length is projected from the distal end portion of the catheter body 1 ′.
  • the rod-like member 14 is formed in a state where a passage portion 14a opened at the distal end surface thereof communicates with the lumen 11 of the catheter body 1 ′.
  • the distal end portion of the catheter body is inserted into the proximal end opening of the tubular portion 21 of the balloon member 2, and the rod-like member 14 of the catheter body 1 is inserted into the slit portion 61 of the check valve 6.
  • the check valve 6 is open, and the space portion 25 of the balloon portion 22 of the balloon member 2 and the lumen 11 of the catheter body 1 are connected to the rod-like member 14. It is in a state of communication through.
  • the catheter body 1 when the catheter body is pulled out from the inside of the proximal end opening of the cylindrical portion 21 of the balloon member 2 and the rod-like member 14 of the catheter body is also pulled out of the slit portion 61 force of the check valve 6, the check valve 6
  • the slit portion 61 is configured to be automatically closed by the fluid pressure in the balloon portion 22 of the balloon member 2.
  • the catheter body 1 ' has an elongated shape having an inner diameter that matches the outer diameter of the catheter body 1' and an outer diameter that matches the outer diameter of the tubular portion 21 of the balloon member 2.
  • the outer cylinder 7 is fitted.
  • the outer cylinder 7 is configured to be displaceable relative to the catheter body 1 ′ in the length direction.
  • the outer cylinder 7 is in such a state that its distal end opening end surface 71 is in full contact with the proximal end opening end surface 21a of the cylindrical portion 21 of the balloon member 2 so as to be separable over the entire circumference. Further, the proximal end portion of the catheter body 1 ′ protrudes from the proximal end opening of the outer cylinder 7, and the catheter body 1 ′ can be operated by grasping the proximal end protruding portion of the catheter body 1. It is structured as follows.
  • the balloon member 22 of the balloon member 2 of the balloon force Tetel A is in a contracted state, and then the non-member member 2 of the balloon catheter A is inserted and positioned in the constricted portion of the living body cavity.
  • the catheter Pull out the body 1 'toward the base end. Then, the rod-like member 14 of the catheter body 1 ′ is also pulled out from the slit portion 61 of the check valve 6, and the slit portion 61 of the check valve 6 is automatically closed by the fluid pressure of the balloon portion 22, so that the check valve 6 is Closed state. Therefore, the balloon portion 22 of the balloon member 2 is reliably maintained in its expanded state.
  • the catheter body 1 ' is pulled out from the tubular portion 21 of the balloon member 2, the distal end opening end surface 71 of the outer tube 7 is in contact with the proximal end opening end surface 21a of the tubular portion 21 of the balloon member 2. . Accordingly, the balloon member 2 is displaced in the pulling direction of the catheter body 1 due to frictional friction between the catheter body and the cylindrical portion 21 facing each other and the pulling resistance of the rod-shaped member 14 from the slit portion 61 of the check valve 6. This can be prevented by the outer cylinder 7, and the balloon member 2 can be reliably positioned at a predetermined position. Then, the catheter body 1 ′ and the outer tube 7 can be pulled out and taken out from the living body cavity, and the next treatment or examination can be continued.
  • the base end portion of the cylindrical portion 21 of the balloon member 2 is arranged.
  • a cylindrical check valve storage portion 8 may be fitted and integrated, and the check valve 6 may be integrally provided in the check valve storage portion 8.
  • the check valve 6 has an elastic bottom with an outer diameter that matches the inner diameter of the check valve storage portion 8 and whose bottom is formed in a convex arc shape.
  • the bottomed cylindrical body 60 is formed with the base end opening directed toward the catheter body 1 and the base end outer peripheral surface of the bottomed cylindrical body 60 is set to the check valve storage portion 8. It is firmly and airtightly bonded to the inner peripheral surface of the whole.
  • a single slit 61 is formed in the bottom of the bottomed cylindrical body 60 so as to penetrate between both surfaces. Note that, in the connection portion between the tubular portion 21 of the balloon member 2 and the check valve storage portion 8, the opposing surfaces of the tubular portion 21 and the check valve storage portion 81 are integrated in an airtight manner.
  • the distal end opening end surface 71 of the outer cylinder 7 is in contact with the proximal end opening end surface 81 of the check valve storage portion 8 so as to be separable over the entire circumference.
  • Structural portions similar to those of the balloon catheter A shown in FIGS. 1 to 16 are denoted by the same reference numerals, and description thereof is omitted.
  • the force described when the slit portion 61 is formed in the check valve 6 does not form the slit portion 61 in the check valve 6, and the catheter body 1 ′
  • the rod-shaped member 14 has a sharp tip like an injection needle.
  • the check valve 6 is opened by passing the sharp end of the rod-shaped member 14 through the check valve 6, and the noren 22 and the inside of the catheter body are communicated via the rod-shaped member 14.
  • the check valve 6 may be automatically closed and closed.
  • the balloon catheter of the present invention is used by being inserted into a living body for examination or treatment, and after performing expansion of a stenosis, closing of a hole formed in a living body cavity, peeling of a thread and fabric, and the like. Therefore, it can be applied to the use of treatment and examination performed in a state where the state is stably maintained for a long time.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Child & Adolescent Psychology (AREA)
  • Anesthesiology (AREA)
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  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

L’invention concerne un cathéter à ballon capable de maintenir une section étroite à l’état allongé et une cavité du corps vivant à l’état gonflé en laissant un membre de ballon enfoui dans la cavité du corps vivant. Le cathéter à ballon A possède un corps de cathéter (1) et un membre de ballon (2) connecté au corps du cathéter de façon détachable (1). Le membre de ballon (2) possède une section tubulaire (21) dont l’extrémité avant est fermée et dont l’extrémité arrière est connectée de façon détachable à l'extrémité avant du corps du cathéter (1), une section de ballon gonflable/dégonflable (22) qui est installée intégralement sur la surface périphérique externe du corps tubulaire (21), un canal (26) qui est formé dans la section tubulaire (21) et alimente la section de ballon en fluide fourni à la section tubulaire (21), et un clapet antiretour (27) qui empêche le liquide de s’écouler depuis l’intérieur de la section de ballon (22).
PCT/JP2006/307255 2005-05-31 2006-04-05 Cathéter à ballon Ceased WO2006129419A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005158451A JP2006333888A (ja) 2005-05-31 2005-05-31 バルーンカテーテル
JP2005-158451 2005-05-31

Publications (1)

Publication Number Publication Date
WO2006129419A1 true WO2006129419A1 (fr) 2006-12-07

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WO (1) WO2006129419A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1977684A1 (fr) * 2007-03-16 2008-10-08 Fujinon Corporation Endoscope
WO2014040064A1 (fr) * 2012-09-10 2014-03-13 Boston Scientific Scimed, Inc. Cathéter ayant un ballonnet détachable et procédés s'y rapportant
CN113350648A (zh) * 2021-07-18 2021-09-07 温州医科大学附属第一医院 一种可准确局麻的气管导管

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US9272120B2 (en) 2006-01-25 2016-03-01 Mayser, Llc Stretch valve balloon catheter and methods for producing and using same
US20070100368A1 (en) 2005-10-31 2007-05-03 Quijano Rodolfo C Intragastric space filler
US9713698B2 (en) 2006-01-25 2017-07-25 Mayser, Llc Stretch valve balloon catheter and methods for producing and using same
US8142469B2 (en) * 2007-06-25 2012-03-27 Reshape Medical, Inc. Gastric space filler device, delivery system, and related methods
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US8840952B2 (en) 2009-04-03 2014-09-23 Reshape Medical, Inc. Intragastric space fillers and methods of manufacturing including in vitro testing
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