WO2013161579A1 - Instrument de traitement médical - Google Patents

Instrument de traitement médical Download PDF

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Publication number
WO2013161579A1
WO2013161579A1 PCT/JP2013/060969 JP2013060969W WO2013161579A1 WO 2013161579 A1 WO2013161579 A1 WO 2013161579A1 JP 2013060969 W JP2013060969 W JP 2013060969W WO 2013161579 A1 WO2013161579 A1 WO 2013161579A1
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WO
WIPO (PCT)
Prior art keywords
medical treatment
insertion tube
expansion
distal end
rotating body
Prior art date
Application number
PCT/JP2013/060969
Other languages
English (en)
Japanese (ja)
Inventor
賢一 雲山
Original Assignee
テルモ株式会社
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 テルモ株式会社 filed Critical テルモ株式会社
Publication of WO2013161579A1 publication Critical patent/WO2013161579A1/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
    • A61M29/00—Dilators with or without means for introducing media, e.g. remedies

Definitions

  • the present invention relates to a medical treatment instrument provided with an expansion body.
  • a medical treatment instrument such as a balloon catheter provided with an expansion body
  • the medical treatment instrument described in Patent Document 1 includes a long shaft, a balloon as an expansion body provided at the tip of the shaft, and a connector provided at the base end of the shaft and communicating with the inside of the balloon.
  • the balloon is expanded by supplying fluid into the balloon from the connector.
  • the objective of this invention is providing the medical treatment tool which can expand an expansion body, without supplying a fluid.
  • the medical treatment tool of the present invention includes an insertion tube that is inserted into a patient's body, a rotating body that extends in the insertion tube and is provided to be rotatable about the axial direction of the insertion tube, and the insertion
  • An expansion body provided at the distal end of the tube and configured to be expandable in the radial direction of the insertion tube; and a rotational force transmission mechanism for transmitting the rotational force of the rotating body to the expansion body to expand the expansion body. It is characterized by having.
  • the rotational body can be expanded by transmitting the rotational force of the rotational body to the expansion body by a mechanical mechanism called a rotational force transmission mechanism. For this reason, it is not necessary to use a fluid for expanding the expansion body, and the expansion body can be expanded without supplying fluid to the expansion body.
  • the expansion body is provided at a distal end portion of the insertion tube, and a plurality of insertion guide portions that guide the insertion tube are disposed in a circumferential direction of the insertion guide portion. It is preferable that the insertion guide unit is rotatably supported, and a base end is provided with an expansion unit that extends in a radial direction of the insertion guide unit.
  • the expansion body since the expansion body includes the insertion guide portion that guides the insertion tube, the insertion tube can be guided in the insertion direction.
  • the expansion portion of the expansion body is configured such that the distal end is rotatably supported by the insertion guide portion and the base end is expanded, so that the diameter of the expansion portion is reduced toward the distal end during expansion. Become. For this reason, the expansion body can be easily inserted into the body, and the stenosis can be expanded by pushing the expansion body into the stenosis in the body.
  • the insertion guide portion is fixed to a distal end portion of the insertion tube, and the rotating body is configured by a screw-like member having an external thread formed on an outer peripheral surface, and the rotational force transmission mechanism. It is preferable to include a cylindrical member having an inner peripheral surface formed with an internal thread that is screwed with the screw-shaped member, and a link member that connects each of the extended portions and the cylindrical member.
  • the rotational force transmission mechanism has a configuration in which the cylindrical member linked to the expansion portion is screwed to the rotating body. Therefore, when the rotating body is rotated, the cylindrical member is rotated.
  • the extension portion can be expanded by sliding in the axial direction. As described above, since the expansion portion can be expanded by the sliding motion of the cylindrical member along the axis of the rotating body, the rotational force transmitting mechanism can be prevented from projecting in the radial direction of the rotating body. The diameter of the expanded body in a state where the body is not expanded can be reduced.
  • the insertion guide portion is fixed to a distal end portion of the insertion tube, and the insertion guide portion has a distal end that opens to the outside and a proximal end that communicates with the interior of the insertion tube. It is preferable that a conveyance path for conveying the object to be conveyed in the insertion tube is provided.
  • the insertion guide portion is provided with a conveyance path having a distal end opened to the outside and a proximal end communicating with the inside of the insertion tube, fluid can be conveyed from the body to the outside via the conveyance path.
  • fluid can be transported from the outside into the body, or a transported object other than fluid such as a guide wire can be transported.
  • the insertion guide portion is fixed to the distal end portion of the insertion tube and does not rotate with the rotation of the rotating body. Therefore, the conveyance path can be provided at an arbitrary position of the insertion guide portion, and the design flexibility of the conveyance path can be provided. Can be increased.
  • the rotating body is formed of a tubular body and includes an image information acquisition unit that is inserted into and removed from the tubular body.
  • the image information acquisition unit is inserted into the rotating body constituted by the tubular body, the diameter of the insertion tube is reduced as compared with the case where the rotating body and the image information acquisition unit are arranged in parallel in the insertion tube. Can be small. Therefore, the insertion tube can be easily inserted into the body, and the expansion body can be inserted into the stenosis portion in the body while confirming the image information acquired by the image information acquisition unit.
  • the insertion guide portion is fixed to a distal end portion of the rotating body, the rotational force transmitting mechanism is provided in the insertion guide portion, and rotation associated with the rotation of the rotating body is restricted.
  • the expansion body is configured such that the insertion guide portion is fixed to the distal end portion of the rotating body, and the rotational force transmission mechanism is configured such that the cylindrical member linked to the expansion portion of the expansion body is screwed into the screw-shaped member. Therefore, if the rotating body is rotated, the cylindrical member can slide in the axial direction of the rotating body and the expanding portion can be expanded while the expanding body rotates.
  • the expansion portion can be expanded by the sliding movement of the cylindrical member along the axis of the screw-shaped member, it is possible to suppress the rotational force transmission mechanism from protruding in the radial direction of the rotating body, The diameter dimension of the expansion body in a state where the expansion body is not expanded can be reduced. Further, since the expansion body is configured such that the expansion portion expands while the insertion guide portion rotates, it is possible to reliably transmit a force sufficient to push the stenosis portion in the body.
  • the screw-like member is extended into the insertion tube, and a conveyance path whose tip is opened to the outside is provided in the screw-like member.
  • the conveyance path whose tip is open to the outside is provided in the screw-like member, the fluid is conveyed from the body to the outside through the conveyance path, or the fluid is conveyed from the outside to the body. Or a transported object other than a fluid such as a guide wire can be transported.
  • the expansion body is rotated with the rotation of the rotating body because the insertion guide portion is fixed to the tip of the rotating body, whereas the screw-like member is restricted from rotating with the rotation of the rotating body. It is configured to be. For this reason, since it can prevent that a conveyance path rotates with rotation of a rotary body, a to-be-conveyed object can be conveyed reliably.
  • the screw-shaped member is formed of a tubular body and includes an image information acquisition unit that is inserted into and removed from the tubular body.
  • the insertion tube is compared with the case where the screw-shaped member and the image information acquisition unit are arranged in parallel in the insertion tube.
  • the diameter can be reduced. Therefore, the insertion tube can be easily inserted into the body, and the expansion body can be inserted into the stenosis portion in the body while confirming the image information acquired by the image information acquisition unit.
  • the medical treatment tool of the present invention is preferably a sinusitis treatment tool.
  • the medical treatment instrument is a sinusitis treatment instrument.
  • the rotational force of the rotating body is transmitted to the expansion body by the rotational force transmission mechanism, and the expansion body is removed.
  • the expansion body can be expanded without supplying fluid to the expansion body. Therefore, since fluid can be prevented from flowing into the nasal cavity suddenly, the patient's posture can be prevented from changing suddenly or fluid can be prevented from flowing into the airway.
  • the side view of the medical treatment tool which concerns on 1st Embodiment of this invention The side view which shows the medical treatment tool which concerns on 1st Embodiment in partial cross section.
  • the front view of the expansion body of the medical treatment tool which concerns on 1st Embodiment The side view which shows the expansion state of the expansion body which concerns on 1st Embodiment.
  • the side view which shows the medical treatment tool which concerns on 3rd Embodiment of this invention partially cut, and shows it.
  • a medical treatment instrument 1 As shown in FIGS. 1 and 2, a medical treatment instrument 1 according to this embodiment includes an insertion tube 2 to be inserted into a patient's body, a grip portion 3 provided at the proximal end of the insertion tube 2, and an insertion A tubular rotator 4 that extends in the tube 2 and is provided so as to be rotatable about the axial direction of the insertion tube 2 and a rotation that extends in the rotator 4 and is restricted by the rotation of the rotator.
  • the fixed tube 5 that is formed, the expansion body 6 provided at the distal end portion of the insertion tube 2 and configured to be expandable in the radial direction of the insertion tube 2, and the rotational force of the rotation body 4 are transmitted to the expansion body 6.
  • a rotational force transmission mechanism 7 that expands the expansion body 6 and an endoscope 8 as an image information acquisition unit that is inserted into and removed from the rotation body 4 are provided.
  • the insertion tube 2 includes a plurality of tubular bodies 21 to 24, and these tubular bodies 21 to 24 are configured to be rotatable with respect to each other and connected in the axial direction.
  • the insertion tube 2 is configured such that a bending means such as a wire (not shown) is connected to the tubular body 21 on the distal end side, the insertion tube 2 can be bent by the bending means, and the bending position of the insertion tube 2 can be fixed. ing.
  • the outer periphery of the insertion tube 2 is tightly covered with a flexible cylindrical member such as an elastic member, and fluids conveyed between the conveyance path 64 described later are tubular bodies 21 to 24. It is designed not to leak from the gap between them.
  • the tubular body 21 on the distal end side and the tubular body 22 on the proximal end side are each provided with rotating shaft portions 211 and 221 that protrude in the coupling direction from one end edge in the coupling direction (the axial direction of the tubular bodies 21 and 22). ing.
  • Tubular bodies 23 and 24 having different shapes are alternately arranged between the distal end side tubular body 21 and the proximal end side tubular body 22.
  • the tubular body 23 includes a rotating shaft portion 231 that protrudes in the coupling direction from both edges in the coupling direction (the axial direction of the tubular body 23).
  • the tubular body 24 includes a rotation support portion 241 whose end edges on both sides in the connecting direction (the axial direction of the tubular body 24) are retracted, and the rotation support portion 241 causes the rotation shafts of the tubular bodies 21 to 23 to rotate. Portions 211, 221, and 231 are supported. Note that a pair of rotation shaft portions 211, 221, 231 and a rotation support portion 241 are provided at positions symmetrical to each other with respect to the central axis of each tubular body 21-24.
  • the insertion tube 2 as described above can be obtained, for example, by laser processing a stainless steel tubular member.
  • laser processing is used, the insertion tube 2 in a state where the tubular bodies 21 to 24 of the insertion tube 2 are connected to each other can be easily obtained simply by cutting the circular tubular member with a laser.
  • the grip portion 3 is connected to an operation dial 31 that rotates the rotating body 4 and a tubular body 21 on the distal end side of the insertion tube 2, and performs a bending operation of the insertion tube 2 and a fixing operation of a bending position of the insertion tube 2. Operating means that do not.
  • the operation dial 31 is provided on the outer periphery of the rotating body 4 and is configured to be rotatable together with the rotating body 4.
  • the rotating body 4 is a tubular body having flexibility, and is composed of a screw-like member having an external thread formed on the outer peripheral surface.
  • the rotating body 4 extends over the grip portion 3, the insertion tube 2, and the expansion body 6.
  • a stopper 41 is provided on the outer periphery of the rotating body 4 so as to be disposed on both sides of a bearing 66 described later, and restricts movement of the rotating body 4 in the axial direction.
  • the fixed tube 5 is made of a flexible material and extends over the grip portion 3, the insertion tube 2, and the expansion body 6, and the distal end reaches the distal end of the expansion body 6. And the endoscope 8 is inserted in this fixed tube 5 so that insertion or extraction is possible.
  • the expansion body 6 is fixed to the distal end portion of the insertion tube 2 and is arranged at equal intervals in the circumferential direction of the insertion guide portion 61. And a plurality of extended portions 62.
  • the expansion body 6 is configured to be non-rotatable with respect to the insertion tube 2 by fixing the insertion guide portion 61 to the distal end portion of the insertion tube 2.
  • the insertion guide 61 is made of stainless steel (for example, all types of SUS such as SUS304, SUS303, SUS316, SUS316L, SUS316J1, SUS316J1L, SUS405, SUS430, SUS434, SUS444, SUS429, SUS430F, SUS302, etc.), a cobalt alloy, and a shape memory alloy. These are made of various metal materials such as pseudoelastic alloys, curable resins, ceramics, and the like, and the tip portion is formed in a streamlined manner.
  • the insertion guide portion 61 includes an opening 63 for accommodating the expansion portion 62, a distal end that opens to the outside, and a proximal end that communicates with the inside of the insertion tube 2, and transports a transported object in the insertion tube 2.
  • a path 64, a support portion 65 that supports the fixed tube 5 in a non-rotatable manner, and a bearing 66 that rotatably supports the rotating body 4 are provided.
  • the extended portion 62 is made of the same material as the insertion guide portion 61 or a material different from the insertion guide portion 61 selected from the above materials, and is curved in accordance with the outer edge of the insertion guide portion 61 from the distal end to the proximal end. It is formed into a shape.
  • the extending portion 62 is configured such that the distal end is rotatably supported by the insertion guide portion 61 and the proximal end is expanded in the radial direction of the insertion guide portion 61 by the rotation.
  • the rotational force transmission mechanism 7 includes a tubular member 71 having an inner peripheral surface formed with a female screw that is screwed with a male screw of the rotating body 4, and a plurality of link members 72 that connect each of the expansion portions 62 and the tubular member 71. And. Each link member 72 has one end connected to the base end of the extension 62 and the other end connected to the tubular member 71.
  • the endoscope 8 includes an imaging unit 81 having an imaging element such as a CCD (Charge Coupled Device) image sensor, and an optical fiber that transmits light toward the distal end of the endoscope 8. And an optical transmission unit 82.
  • the endoscope 8 is configured to be bendable by a bending means such as a wire (not shown) connected to the distal end portion of the endoscope 8.
  • the imaging unit 81 is not limited to this, and a digital video camera using another imaging element such as a CMOS (Complementary Metal Oxide Semiconductor) image sensor, an image fiber that acquires and transmits an image using an optical fiber, It may be an imaging system that performs image transmission using an objective lens and a plurality of relay lens optical systems.
  • CMOS Complementary Metal Oxide Semiconductor
  • the operator inserts the expansion body 6 and the insertion tube 2 of the medical treatment instrument 1 from the nostril in a state where the endoscope 8 is arranged at the distal end of the expansion body 6, and curves the insertion tube 2 while bending the imaging section. While confirming the image information in the nostril acquired by 81, the expansion body 6 is guided to the natural mouth of the sinus narrowed by sinusitis.
  • the distal end portion of the expansion body 6 is formed in a streamline shape, resistance at the time of insertion can be suppressed, and the expansion body 6 does not press the body locally, It is possible to prevent the tissue from being damaged. Further, if the endoscope 8 is inserted in advance to the distal end of the expansion body 6, the insertion tube 2 can be inserted while confirming the state in the insertion path based on the image acquired by the endoscope 8. it can.
  • the operator rotates the operation dial 31 to expand the expansion body 6. That is, when the rotating body 4 is rotated by the rotation operation of the operation dial 31, as shown in FIG. 4, the cylindrical member 71 slides along the rotating body 4 toward the distal end side, and the link member 72 is connected to the extension portion 62. Push up the proximal end. As a result, as shown in FIGS. 4 and 5, the expansion part 62 rotates around the tip, and the base end of the expansion part 62 expands radially in the radial direction of the insertion guide part 61. For this reason, the stenosis part of a natural mouth can be expanded and the stenosis part can be expanded and treated. If the insertion tube 2 is retracted somewhat after the expansion body 6 is contracted, it can be confirmed from the image acquired by the endoscope 8 that the narrowed portion of the natural mouth has expanded.
  • the state in the sinus can be confirmed based on the image acquired by the endoscope 8. If fluid or viscous material such as runny nose stays in the paranasal sinuses, the fluid or viscous material is sucked through the conveyance path 64 of the insertion guide portion 61 and the lumen of the insertion tube 2 and conveyed to the outside. can do. Further, a fluid such as physiological saline can be transported from the outside to the lumen of the insertion tube 2 and the transport path 64 of the insertion guide portion 61, and the sinuses can be washed with the fluid.
  • the expansion body 6 can be expanded by transmitting the rotational force of the rotation body 4 to the expansion body 6 by a mechanical mechanism called the rotation force transmission mechanism 7. For this reason, it is not necessary to use a fluid when expanding the expansion body 6, and the expansion body 6 can be expanded without supplying fluid to the expansion body 6.
  • the expansion body when the expansion body is expanded by supplying a fluid to the expansion body as in the prior art, the expansion body may be overexpanded.
  • the machine Since the expansion body 6 can be expanded by a typical mechanism, overexpansion of the expansion body 6 can be prevented.
  • the expansion body 6 since the expansion body 6 includes the insertion guide portion 61 that guides the insertion tube 2, the insertion tube 2 can be guided in the insertion direction. Furthermore, since the expansion part 62 of the expansion body 6 is configured such that the distal end is rotatably supported by the insertion guide part 61 and the base end is expanded, the diameter of the expansion part 62 decreases toward the distal end during expansion. It becomes the shape. For this reason, the expansion body 6 can be easily inserted into the body, and the stenosis can be expanded by pushing the expansion body into the stenosis in the body.
  • the rotational force transmission mechanism 7 has a configuration in which the cylindrical member 71 linked to the expansion portion 62 is screwed to the outer periphery of the rotating body 4. 71 can slide in the axial direction of the rotating body 4 to expand the expansion portion 62. As described above, since the extending portion 62 can be expanded by the sliding operation of the cylindrical member 71 along the axis of the rotating body 4, it is possible to suppress the rotational force transmission mechanism 7 from projecting in the radial direction of the rotating body 4. It is possible to reduce the diameter of the expansion body 6 when the expansion body 6 is not expanded.
  • the insertion guide 61 is provided with a conveyance path 64 having a distal end opened to the outside and a proximal end communicating with the inside of the insertion tube 2, fluid can be conveyed from the body to the outside via the conveyance path 64. Can carry fluid from the outside into the body.
  • the insertion guide portion 61 is fixed to the distal end portion of the insertion tube 2 and does not rotate with the rotation of the rotating body 4. Therefore, the conveyance path 64 can be provided at an arbitrary position of the insertion guide portion 61. The degree of freedom in designing the path 64 can be increased.
  • the insertion tube 2 is compared with the case where the rotating body 4 and the endoscope 8 are arranged in parallel in the insertion tube 2.
  • the diameter can be reduced. Therefore, the insertion tube 2 can be easily inserted into the body, and the expansion body can be inserted into the narrowed portion of the body while confirming the image information acquired by the endoscope 8.
  • the medical treatment instrument 1 When the medical treatment instrument 1 is a sinusitis treatment instrument, the medical treatment instrument 1 transmits the rotational force of the rotating body 4 to the expansion body by the rotational force transmission mechanism 7 so that the expansion body 6 is transferred. Can be expanded. For this reason, the expansion body 6 can be expanded without supplying fluid to the expansion body 6 in the expansion treatment of the narrowed portion of the natural mouth. Therefore, since fluid can be prevented from flowing into the nasal cavity suddenly, the patient's posture can be prevented from changing suddenly or fluid can be prevented from flowing into the airway.
  • the medical treatment tool 1 of the present embodiment is different from the first embodiment in that the expansion body 6 is fixed to the rotating body 4 and the shape of the fixed tube 5. .
  • the fixed tube 5 is a tubular body made of a flexible member, and is made of a screw-like member having an external thread formed on the outer peripheral surface.
  • the fixed pipe 5 is provided with a conveyance path 52 having a distal end opened to the outside and a proximal end extended into the insertion pipe 2.
  • the expansion body 6 is not fixed to the insertion tube 2 but is fixed to the rotating body 4 and is configured to be rotatable together with the rotating body 4. Specifically, the expansion body 6 is configured such that the insertion guide portion 61 is fixed to the distal end portion of the rotating body 4 and is rotatable together with the rotating body 4.
  • the rotational force transmission mechanism 7 includes a cylindrical member 71 having an inner peripheral surface formed with a female screw that is screwed with a male screw of the fixed tube 5, and a plurality of link members 72 that connect each of the expansion portions 62 and the cylindrical member 71. And.
  • the cylindrical member 71 slides to the distal end side along the fixed tube 5, and the link member 72 is the expansion portion.
  • the base end of 62 is pushed up.
  • the expansion portion 62 rotates around the distal end as a rotation center, and the proximal end expands radially in the radial direction of the insertion guide portion 61. Therefore, it is possible to expand a narrowed part in the body, for example, the natural mouth of the sinus that has been narrowed by sinusitis, and the narrowed part can be expanded.
  • the expansion body 6 has a cylindrical member in which the insertion guide portion 61 is fixed to the distal end portion of the rotating body 4, and the rotational force transmission mechanism 7 is linked to the expansion portion 62 of the expansion body 6.
  • 71 has a configuration in which the outer periphery of the fixed tube 5 is screwed. Therefore, when the rotating body 4 is rotated, the cylindrical member 71 slides in the axial direction of the rotating body 4 while the expansion body 6 rotates. Thus, the expansion part 62 can be expanded.
  • the expansion portion 62 can be expanded by the sliding operation of the cylindrical member 71 along the axis of the fixed tube 5, it is possible to prevent the rotational force transmission mechanism 7 from protruding in the radial direction of the rotating body 4. It is possible to reduce the diameter of the expansion body 6 when the expansion body 6 is not expanded.
  • the expansion body 6 is configured such that the expansion portion 62 expands while the insertion guide portion 61 rotates, it is possible to reliably transmit a force sufficient to push the stenosis portion in the body.
  • the conveyance path 52 whose tip is opened to the outside is provided in the fixed tube 5
  • the fluid is conveyed from the inside of the body to the outside through the conveyance path 52, and the fluid is conveyed from the outside to the body.
  • the expansion body 6 rotates with the rotation of the rotation body 4 because the insertion guide portion 61 is fixed to the tip of the rotation body 4, whereas the fixed tube 5 rotates with the rotation of the rotation body 4. Is configured to be restricted from being rotated. For this reason, since it can prevent that the conveyance path 52 rotates with rotation of the rotary body 4, a to-be-conveyed object can be conveyed reliably.
  • the insertion tube 2 is compared with the case where the fixed tube 5 and the endoscope 8 are arranged in parallel in the insertion tube 2.
  • the diameter can be reduced.
  • the insertion tube 2 can be easily inserted into the body, and the expansion body 6 can be inserted into the narrowed portion of the body while confirming image information acquired by the endoscope 8.
  • the medical treatment tool 1 of the present embodiment is different from the first embodiment in that the distal end guide portion 9 is provided.
  • the distal end guide portion 9 is provided at the distal end of the insertion guide portion 61 of the expansion body 6 and guides the expansion body 6.
  • the tip guide portion 9 is formed with an outer diameter smaller than the outer diameter of the insertion guide portion 61 and is reduced in diameter toward the tip.
  • the distal end guide portion 9 having a diameter smaller than that of the insertion guide portion 61 is provided at the distal end of the insertion guide portion 61 of the expansion body 6, so the distal end guide portion 9 is first inserted into the narrowed portion in the body, so Thus, the expansion body 6 can be reliably guided.
  • the present invention is not limited to the above-described embodiment, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
  • the distal end portion of the insertion guide portion 61 is formed in a streamline shape in the expansion body 6, but is not limited thereto, and may be formed in an obtuse angle shape.
  • the number and the arrangement interval of the extension parts 62 can be arbitrarily set.
  • the conveyance paths 52 and 64 have been used as fluid conveyance paths, they may be used as conveyance paths for conveying an object to be conveyed such as a guide wire.
  • the insertion tube 2 is made of metal such as stainless steel, but may be made of other members such as resin or other metal as long as it has flexibility.
  • the fixed tube 5 extends over the grip portion 3, the insertion tube 2, and the expansion body 6, but it may be provided at least in the insertion guide portion 61.
  • the medical treatment instrument 1 has been used for observation in the sinuses, dilation of a narrowed portion generated in the natural mouth of the sinuses, and treatment of sinusitis. It may be used for observation and treatment.
  • the present invention can be used for medical treatment tools used for diagnosis and treatment of the paranasal sinuses, as well as other medical treatment tools for diagnosis or treatment that do not involve surgical treatment.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • 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 instrument de traitement médical (1) comprenant : un tube d'insertion (2) à insérer dans le corps d'un patient ; un corps rotatif (4) qui est placé de façon à s'étendre dans le tube d'insertion (2) et de façon à pouvoir tourner avec la direction axiale du tube d'insertion (2) comme centre de rotation ; un corps expansible (6) qui est placé à l'extrémité du tube d'insertion (2), et qui est formé de façon à pouvoir être expansible dans la direction radiale du tube d'insertion (2) ; et un mécanisme de transmission de force de rotation (7) qui transmet la force de rotation du corps rotatif (4) au corps expansible (6) et dilate le corps expansible (6).
PCT/JP2013/060969 2012-04-24 2013-04-11 Instrument de traitement médical WO2013161579A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-098792 2012-04-24
JP2012098792A JP2015128455A (ja) 2012-04-24 2012-04-24 医療用処置具

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WO2013161579A1 true WO2013161579A1 (fr) 2013-10-31

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008513125A (ja) * 2004-09-17 2008-05-01 アクラレント インコーポレイテッド 副鼻腔および他の鼻腔内または鼻傍構造の腔口を拡張かつ変更する装置および方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008513125A (ja) * 2004-09-17 2008-05-01 アクラレント インコーポレイテッド 副鼻腔および他の鼻腔内または鼻傍構造の腔口を拡張かつ変更する装置および方法

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