WO2013146196A1 - Dispositif médical - Google Patents

Dispositif médical Download PDF

Info

Publication number
WO2013146196A1
WO2013146196A1 PCT/JP2013/056492 JP2013056492W WO2013146196A1 WO 2013146196 A1 WO2013146196 A1 WO 2013146196A1 JP 2013056492 W JP2013056492 W JP 2013056492W WO 2013146196 A1 WO2013146196 A1 WO 2013146196A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheath
medical device
radial direction
magnetic
body lumen
Prior art date
Application number
PCT/JP2013/056492
Other languages
English (en)
Japanese (ja)
Inventor
総一郎 杉原
健治 渡邊
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 WO2013146196A1 publication Critical patent/WO2013146196A1/fr

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0062—Arrangements for scanning
    • A61B5/0066—Optical coherence imaging
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
    • A61B5/0084—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for introduction into the body, e.g. by catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22001—Angioplasty, e.g. PCTA
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/36—Image-producing devices or illumination devices not otherwise provided for
    • A61B90/37—Surgical systems with images on a monitor during operation
    • A61B2090/373—Surgical systems with images on a monitor during operation using light, e.g. by using optical scanners
    • A61B2090/3735—Optical coherence tomography [OCT]
    • 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
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/02—Holding devices, e.g. on the body
    • A61M25/04—Holding devices, e.g. on the body in the body, e.g. expansible

Definitions

  • the present invention relates to a medical device.
  • a catheter In recent years, various treatments and examinations have been performed in the medical field using a long and soft hollow tubular medical device called a catheter.
  • treatment methods include the method of administering a drug directly to the affected area using the length of the catheter, and the use of a catheter with a balloon that is expanded by pressurization attached to the tip to push the stenosis in the body cavity.
  • a method of expanding and opening There are a method of expanding and opening, a method of scraping the affected part using a catheter with a cutter attached to the tip, and a method of closing the aneurysm, bleeding site or feeding blood vessel using a catheter.
  • the diagnostic catheter is mainly used in the percutaneous treatment of a stenosis in a body cavity, as an aid to a decision for observing the property of the stenosis and selecting a treatment method. It is also used to observe the condition after treatment.
  • diagnostic catheter examples include an optical coherence tomography (OCT: Optical Coherence Tomography) catheter using low-interference light (for example, see Patent Document 1), an ultrasonic catheter that performs sensing with an ultrasonic detector, and the like. .
  • OCT optical coherence tomography
  • Patent Document 1 an ultrasonic catheter that performs sensing with an ultrasonic detector, and the like.
  • a concentric region centering on the sheath can be observed in an axial orthogonal section of the sheath provided on the catheter by an imaging member provided on the inside.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a medical device that can appropriately move a sheath in a radial direction in a living body lumen.
  • a medical device that achieves the above object includes a sheath that is inserted into a living body lumen, an imaging member that is provided in the sheath and acquires an image in the living body lumen, the sheath, and the sheath And a moving member that is arranged between the living body lumen and moves the sheath in the radial direction by applying a force along the radial direction of the sheath to the sheath.
  • a force along the radial direction of the sheath is applied to the sheath by the moving member, and the sheath can be moved in the radial direction. For this reason, the sheath can be appropriately moved in the radial direction in the living body lumen.
  • FIG. 1 is a schematic configuration diagram of a catheter according to a first embodiment of the present invention. It is a longitudinal direction sectional view showing a joined part of a sheath body part and a sheath tip member. It is longitudinal direction sectional drawing of a hub. It is the schematic which shows a catheter when an imaging core is pushed most into a sheath main-body part. It is the schematic which shows a catheter when an imaging core is most pulled out from the sheath main-body part. It is longitudinal direction sectional drawing of a unit connector and a relay connector. It is the schematic which shows a catheter when one side of the hand operation part of the catheter which concerns on 1st Embodiment is extracted.
  • FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. FIG.
  • FIG. 9 is a sectional view taken along line 9-9 in FIG. It is the schematic which shows a catheter when both the hand operation parts of the catheter which concern on 1st Embodiment are extracted. It is sectional drawing which follows the 11-11 line of FIG. It is a schematic block diagram of the catheter which concerns on 2nd Embodiment of this invention. It is front sectional drawing of the front end side vicinity of the sheath main-body part of the catheter which concerns on 2nd Embodiment.
  • FIG. 14 is a cross-sectional view taken along line 14-14 of FIG.
  • FIG. 15 is a sectional view taken along line 15-15 in FIG.
  • FIG. 17 is a cross-sectional view taken along line 17-17 in FIG. It is front sectional drawing of the front end side vicinity of a sheath main-body part when both the hand operation parts of the catheter which concerns on 2nd Embodiment are extracted.
  • FIG. 19 is a cross-sectional view taken along line 19-19 of FIG. It is a schematic block diagram of the catheter which concerns on the modification of this invention. It is a schematic block diagram of the catheter which concerns on the further another modification of this invention. It is a schematic block diagram of the catheter which concerns on the further another modification of this invention.
  • proximal end side the hand operating part side of the device
  • distal end side the side inserted into the living body lumen
  • FIG. 1 is a schematic configuration diagram of a catheter 1 according to a first embodiment of the present invention.
  • FIG. 2 is a longitudinal sectional view showing a joint portion between the sheath body and the sheath tip member.
  • an optical coherence tomography (OCT) catheter (hereinafter sometimes referred to as a catheter) 1 according to an embodiment of the present invention includes a sheath 10 inserted into a living body lumen L, and a sheath 10 Provided between the sheath 10 and an imaging core 21 (corresponding to an imaging member) for acquiring an image in the living body lumen L and the sheath 10 and a force along the radial direction of the sheath 10. And a moving member 100 that moves the sheath 10 in the radial direction. Details will be described below.
  • the catheter 1 is a long and bendable sheath 10 that is inserted into the living body lumen L, an image acquisition means 20 for acquiring an optical coherence tomographic image in the living body lumen L, and the living body lumen L.
  • the operation unit 30 is connected to the proximal end side of the sheath 10 and is not inserted into the sheath 10 and is operated by the user, and the moving member 100 that moves the sheath 10 in the radial direction.
  • the sheath 10 includes a sheath body 11 and a sheath tip member 12 and is configured by joining the sheath body 11 and the sheath tip member 12.
  • the sheath body 11 has a working lumen 11L in which the image acquisition means 20 is incorporated so as to be movable in the axial direction of the sheath 10.
  • the sheath tip member 12 has a guide wire lumen 12L through which the guide wire W is inserted.
  • the guide wire W is inserted into the living body lumen L in advance, and the catheter 1 is guided to the affected area while passing the guide wire W through the sheath distal end member 12.
  • an X-ray contrast marker 14 is provided in the vicinity of the distal end of the sheath distal end member 12 so that the distal end position of the catheter 1 can be confirmed under fluoroscopy when inserted into the living body lumen L.
  • the tube wall of the sheath 10 is formed such that the proximal end side of the sheath distal end member 12 transmits an optical signal.
  • the catheter 1 according to this embodiment is a catheter 1 that acquires an image using an optical signal using OCT, and an optical coherence tomographic image can be obtained by transmitting and receiving light through the tube wall of the sheath 10.
  • the image acquisition means 20 includes an imaging core 21 that houses a side-illuminated lens 212 for transmitting and receiving light toward the tissue in the living body lumen L in the housing 211, the imaging core 21 attached to the tip, and rotational power.
  • a drive shaft 22 that transmits light
  • an elastic member 23 that is connected to the distal end side of the imaging core 21 to prevent the sheath 10 from being caught when moving the imaging core 21 back and forth, and is inserted into the drive shaft 22 to transmit light.
  • an optical fiber 24 for guiding light.
  • the housing 211 is fixed to the distal end side of the drive shaft 22, and the side irradiation type lens 212 is fixed to the distal end side of the optical fiber 24.
  • the fixing method is not particularly limited, and for example, it can be bonded with an adhesive.
  • the drive shaft 22 is flexible and has a characteristic capable of transmitting the mechanical driving force from the driving unit D transmitted through the optical connector 51 described later to the imaging core 21.
  • the imaging core 21 translates while rotating, and the affected part in the living body lumen L can be observed 360 degrees.
  • the elastic member 23 is preferably made of a metal material.
  • the elastic member 23 is made of a spring steel, stainless steel, a superelastic alloy, a cobalt-based alloy, a metal such as gold, platinum, tungsten, or an alloy containing these.
  • the elastic member 23 can also be manufactured with other than a metal material.
  • the operation unit 30 is connected to the hub 31 on the proximal end side, the unit connector 33 connected to the hub 31 via the inner pipe 32, and the unit connector 33 via the outer pipe 34. And a relay connector 35 for connecting the sheath 10 and the operation unit 30.
  • FIG. 3 is a longitudinal sectional view of the hub 31. As shown in FIG. 3, the hub 31 includes a first outer housing 40 and a second outer housing 50.
  • the first outer housing 40 has a collar member 41 that defines the rotation axis of the drive shaft 22, and the drive shaft 22 and the optical fiber 24 are provided inside the second outer housing 50 through the collar member 41. Connected to the optical connector 51.
  • the second outer housing 50 holds a part of the first outer housing 40 and rotatably holds the optical connector 51 that transmits the mechanical driving force from the driving unit D to the drive shaft 22.
  • FIG. 4 (moving member 100 is omitted for clarity) is a schematic diagram showing the catheter 1 when the imaging core 21 is pushed most into the sheath body 11.
  • FIG. 5 (moving member 100 is omitted for clarity) is a schematic view showing the catheter 1 when the imaging core 21 is most pulled out from the sheath body 11.
  • the inner tube 32 is pushed into the unit connector 33 and the outer tube 34 and pulled out as shown in FIG. 5, whereby the drive shaft 22 is interlocked to move the inside of the sheath body 11 in the axial direction.
  • the imaging core 21 is most pulled out from the sheath body 11, that is, when the inner tube 32 is most pulled out, as shown in FIG.
  • the inner tube 32 has a stopper 32A formed at the tip thereof as a unit connector. It is caught by the inner wall of 33 and parts other than the vicinity of the caught tip are exposed. In this state, the imaging core 21 is pulled back inside the sheath main body 11, and thus is positioned at a position facing the drive unit D by the amount the inner tube 32 is pulled out. By moving the imaging core 21 while rotating, an optical coherence tomographic image in the living body lumen L can be continuously acquired, and a three-dimensional image can be acquired.
  • FIG. 6 is a longitudinal sectional view of the unit connector 33 and the relay connector 35.
  • the unit connector 33 includes a unit connector main body 331, a sealing member 332, and a packing 333.
  • An outer tube 34 attached to the relay connector 35 is inserted into the unit connector body 331, and an inner tube 32 extending from the hub 31 is inserted into the outer tube 34.
  • the sealing member 332 holds the packing 333 in combination with the unit connector main body 331.
  • the inner pipe 32 extending from the hub 31 is formed with a stopper 32A at the tip, even when the hub 31 is most pulled, that is, when the inner pipe 32 is most pulled out from the outer pipe 34, the stopper 32A is The inner pipe 32 is not pulled out from the unit connector 33 by being caught on the inner wall of the connector main body 331.
  • the relay connector 35 holds the outer tube 34.
  • the proximal end of the sheath body 11 is connected to the inner surface of the relay connector 35, and a path for introducing the drive shaft 22 passing through the outer tube 34 into the sheath body 11 is formed.
  • the protective tube 7 is fixed to the inner wall of the outlet member 36 through which the drive shaft 22 of the relay connector 35 passes.
  • the protective tube 7 extends toward the inner tube 32 extending from the hub 31. Therefore, when the inner tube 32 is pushed into the outer tube 34, the protective tube 7 is pushed into the inner tube 32 in the direction opposite to the pushing direction. When the inner tube 32 is pushed into or pulled out from the outer tube 34, the protective tube 7 is also pushed into or pulled out from the inner tube 32 in the opposite direction. Therefore, even if the drive shaft 22 comes into contact with the inner tube 32 and friction occurs, and the force that bends to the drive shaft 22 is generated, the force that is deflected by the protective tube 7 can be suppressed, and bending or the like can be prevented.
  • the moving member 100 is disposed on the outer periphery of the sheath main body 11 and is movable in the axial direction of the sheath main body 11, and between the sheath main body 11 and the sheath member 101.
  • a resilient member 102 that is housed in the space S and is capable of biasing a resilient force that moves the sheath 10 in the radial direction, and a hand operating unit 103 that moves the sheath member 101 in the axial direction.
  • the sheath member 101 is a sheath piece that is divided into two so that one hollow member is equally divided in the axial direction of the sheath body 11, and can be moved in the axial direction by the hand operation unit 103.
  • the elastic member 102 is a self-expandable mesh structure that expands in the radial direction.
  • a material such as a resin such as metal or polyethylene is used.
  • Two elastic members 102 are provided in the axial direction.
  • FIG. 7 is a schematic view showing the catheter 1 when one side of the hand operation unit 103 is pulled out.
  • the right end of the elastic member 102 is fixed to the outer periphery of the sheath body 11, and the sheath member 101 is pulled out so as to expose the sheath body 11.
  • the resilient member 102 accommodated in the space S expands in the radial direction, and the repulsive force along the radial direction of the sheath main body 11 generated by the resilient member 102 pushing the living body lumen L is applied to the sheath 10. It gives to.
  • the expanded elastic member 102 has a space S between the sheath main body portion 11 and the sheath member 101. It is stored in.
  • FIGS. 8 is a cross-sectional view taken along line 8-8 in FIG. 1
  • FIG. 9 is a cross-sectional view taken along line 9-9 in FIG.
  • FIG. 10 is a schematic view showing the catheter 1 when both of the hand operating portions 103 of the catheter according to the first embodiment are pulled out.
  • FIG. 11 is a sectional view taken along line 11-11 in FIG.
  • the elastic member stored in the space S between the sheath main body portion 11 and the sheath member 101 is moved by moving one of the proximal operation portions 103 to the proximal end side.
  • the emitting member 102 expands in the radial direction.
  • the resilient member 102 is expanded upward in FIGS. Since the elastic member 102 applies an upward force to the living body lumen L, a downward force is applied to the sheath body 11 as the repulsive force, and the sheath 10 is displaced downward.
  • the sheath 10 is displaced to the lesion site side by appropriately rotating the sheath 10 around the axis.
  • the other hand operating unit 103 that has not been moved is moved to the proximal end side.
  • the elastic member 102 that has been expanded only to the upper side expands to the lower side, and a downward force is applied to the living body lumen L.
  • a repulsive force an upward force is applied to the sheath body 11. Power is granted. Therefore, since the elastic member 102 is expanded over the entire circumference, the sheath 10 can be arranged at the center in the living body lumen L.
  • the optical coherence tomographic image of the entire body lumen L can be continuously acquired and a three-dimensional image can be acquired.
  • the expanded elastic member 102 is accommodated in the space S by pushing the sheath member 101 so that the sheath body 11 is covered.
  • a force along the radial direction of the sheath body 11 is applied to the sheath 10 by the moving member 100, and the sheath 10 can be moved in the radial direction. For this reason, the sheath 10 can be appropriately moved in the radial direction in the living body lumen L.
  • the moving member 100 is disposed at a position where the radial position of the sheath 10 is deviated from the center in the living body lumen L or in the center in the living body lumen L. For this reason, for example, when it is desired to gaze at the lesion before surgery, the sheath 10 can be displaced toward the lesion, and the lesion can be gazeed. Further, when it is desired to observe the entire inside of the living body lumen L after the operation, the sheath 10 can be arranged at the center in the living body lumen L, and the entire inside of the living body lumen L can be observed.
  • the moving member 100 is disposed on the outer periphery of the sheath body 11 and is housed in a sheath member 101 that is movable in the axial direction, and a space S between the sheath body 11 and the sheath member 101, and the sheath 10 has a diameter.
  • a resilient member 102 that is capable of biasing a resilient force that moves in a direction, and the sheath member 101 is pulled out so as to expose the sheath body 11, so that the accommodated resilient member 102 has a diameter.
  • the sheath 10 can be moved in the radial direction in the living body lumen L by pulling out or pushing in the sheath member 101. Therefore, it becomes possible to arrange the sheath 10 at a position displaced from the center in the body lumen L or at the center depending on the situation.
  • the sheath member 101 is a sheath piece that is divided into two so that one hollow member is equally divided in the axial direction of the sheath body 11. For this reason, by pulling out one of the sheath members 101, the sheath 10 can be arranged at a position displaced from the center in the living body lumen L, and by pulling out both of the sheath members 101, the sheath 10 can be placed in the living body lumen L. Can be placed in the center of the inside. Therefore, according to the situation, the sheath 10 can be disposed at a position displaced from the center in the living body lumen L or at the center.
  • the elastic members 102 are two self-expandable mesh structures that are arranged in the axial direction and expand in the radial direction, and one end of the mesh structure is fixed to the outer periphery of the sheath body 11. .
  • the sheath 10 can be arranged at a position displaced from the center in the body lumen L or at the center by pulling out or pushing in the sheath member 101 according to the situation.
  • FIG. 12 is a schematic configuration diagram of the catheter 2 according to the second embodiment.
  • FIG. 13 is a front sectional view of the vicinity of the distal end side of the sheath main body 11 according to the second embodiment.
  • FIG. 14 is a cross-sectional view taken along line 14-14 of FIG.
  • FIG. 15 is a sectional view taken along line 15-15 in FIG.
  • the catheter 2 according to the second embodiment of the present invention is inserted into the sheath body 11, and includes a drive shaft 60 including the imaging core 21 and the first magnetic member 61 therein, A moving member 200 that is disposed between the sheath main body 11 and the living body lumen L and moves the sheath 10 in the radial direction by applying a force along the radial direction of the sheath main body 11 to the sheath 10; Have.
  • Other configurations are the same as those in the first embodiment.
  • the drive shaft 60 includes an imaging core 21 and three first magnetic members 61 in the axial direction.
  • the three first magnetic members 61 all have N-pole magnetism and have a uniform magnetic force in the radial direction.
  • the magnetic member generally has both S-pole and N-pole magnetism, and the expression of having the N-pole magnetism described here has the S-pole inside and the N-pole on the outer periphery. The same shall apply hereinafter.
  • the moving member 200 is disposed on the outer periphery of the sheath body 11 and is disposed in an elongated shape between the sheath member 210 that is movable in the axial direction, and between the sheath body 11 and the sheath member 210, and the third magnetic member 221. And a resilient member 230 that is housed in a space S1 between the tube 220 and the sheath member 210 and that can freely bias the resilient force that moves the sheath 10 in the radial direction.
  • the sheath member 210 is a sheath piece that is divided into two so that one hollow member is equally divided in the axial direction of the sheath main body 11, and can be moved in the axial direction by the hand operating portion 201.
  • the tube 220 is made of a material such as metal or polyethylene.
  • the third magnetic member 221 has S pole magnetism and is arranged in the circumferential direction of the tube 220 as shown in FIGS. Since the third magnetic member 221 has S-pole magnetism, the first magnetic member 61 disposed in the vicinity of the third magnetic member 221 acts as an attractive force, and the tube moves along with the axial movement of the drive shaft 60. 220 can be moved axially.
  • the elastic member 230 includes a second magnetic member 231 having N-pole magnetism, and a wire 232 connecting the outer periphery of the tube 220 and the second magnetic member 231. Further, as shown in FIGS. 13 and 14, two elastic members 230 are provided at opposite positions in the circumferential direction of the sheath 10 so as to correspond to the divided positions of the sheath member 210, and are provided at two locations in the axial direction. A total of four are provided. Since the second magnetic member 231 has N-pole magnetism, repulsive force works with the first magnetic member 61 disposed in the vicinity of the second magnetic member 231. Further, all the second magnetic members 231 have the same magnetic force.
  • FIG. 16 is a front cross-sectional view of the vicinity of the distal end side of the sheath body 11 when one side of the hand operation unit 201 is pulled out.
  • the elastic member 230 accommodated in the space S ⁇ b> 1 is pulled between the first magnetic member 61 and the second magnetic member 231 by pulling the sheath member 210 so as to expose the tube 220.
  • the repulsive force is expanded in the radial direction by the repulsive force, and the repulsive force along the radial direction of the sheath main body 11 generated by the elastic member 230 pushing the living body lumen L is applied to the sheath 10.
  • FIG. 13 when the sheath member 210 is pushed so as to cover the tube 220, the expanded elastic member 230 is accommodated in the space S ⁇ b> 1.
  • the material of the wire 232 is preferably a resin, such as polyethylene, but is not limited thereto. Moreover, all the lengths of the wire 232 are the same.
  • FIG. 17 is a sectional view taken along the line 17-17 in FIG.
  • FIG. 18 is a front cross-sectional view of the vicinity of the distal end side of the sheath main body 11 when both the hand operating portions 201 according to the second embodiment are pulled out.
  • FIG. 19 is a sectional view taken along line 19-19 in FIG.
  • the sheath 10 is not applied with a force in the radial direction. I can't move. In this case, for example, when it is desired to gaze at the lesion in the living body lumen L before the operation, it is necessary to move the sheath 10 to the lesion along the radial direction.
  • the elastic member 230 housed in the space S ⁇ b> 1 is moved from the first magnetic member 61 to the first magnetic member 61 by moving one hand operating unit 201 to the proximal end side. It expands in the radial direction by the repulsive force with the two magnetic members 231.
  • the resilient member 230 is expanded upward in FIGS. Since the resilient member 230 applies an upward force to the living body lumen L, a downward force is applied to the sheath body 11 as the repulsive force, and the sheath 10 is displaced downward.
  • the sheath 10 is displaced to the lesion site side by appropriately rotating the sheath 10 around the axis.
  • the other hand operating unit 201 that has not been moved is moved to the proximal end side.
  • the elastic member 230 expands downward, and a downward force is applied to the living body lumen L. Therefore, an upward force is applied to the sheath body 11 as the repulsive force. Therefore, the downward force generated by moving the upper side of the hand operation unit 201 and the upward force generated by moving the lower side of the hand operation unit 201 are balanced, and the sheath 10 is centered in the living body lumen L. Can be arranged.
  • the tube 220 is also pulled out at the same time, and optical coherence tomographic images of the entire body lumen L are continuously acquired, and a three-dimensional image is obtained. Can be acquired.
  • the expanded elastic member 230 is accommodated in the space S1 by pushing the sheath member 210 so as to cover the sheath main body 11.
  • a force along the radial direction of the sheath body 11 is applied to the sheath 10 by the moving member 200, and the sheath 10 can be moved in the radial direction. For this reason, the sheath 10 can be moved in the radial direction in the living body lumen L.
  • first magnetic members 61 are provided in the axial direction of the sheath body 11, and the moving member 200 is disposed in a long shape between the sheath body 11 and the sheath member 210, and the third magnetic member 61
  • the elastic member 230 is further accommodated in a space between the tube 220 and the sheath member 210, and the other end of the wire 232 is connected to the outer periphery of the tube 220.
  • the tube 220 is moved in the axial direction with the movement of the drive shaft 60 in the axial direction by the attractive force with 221. For this reason, the second magnetic member 231 is not disposed on the outer periphery of the imaging core 21, and the imaging of the imaging core 21 is not hindered by the second magnetic member 231.
  • the sheath members 101 and 210 are sheath pieces that are divided into two so that one hollow member is equally divided in the axial direction of the sheath body 11. As shown in FIG. 20, it may be a single hollow member. At this time, it becomes easy to arrange the radial position of the sheath 10 in the center of the living body lumen L.
  • the sheath member 101 is divided into two parts so as to be equally divided in the axial direction, and the elastic member 102 is expanded, whereby the sheath 10 is expanded.
  • the sheath 10 may be divided into three or more so that the sheath member 101 is equally divided in the axial direction.
  • the sheath 10 can be disposed in the center of the living body lumen L with higher accuracy.
  • the sheath member 210 is divided into two parts so as to be equally divided in the axial direction, and the elastic member 230 is expanded, whereby the sheath 10.
  • the sheath member 210 is divided into three or more (four in FIG. 21) so as to be equally divided in the axial direction, and the elastic member 230 is Three or more (four in FIG. 21) may be provided in the direction.
  • the sheath 10 can be disposed in the center of the living body lumen L with higher accuracy.
  • the other end of the wire 232 is connected to the tube 220 as shown in FIG.
  • the other end of the wire 232 may be provided on the outer periphery of the sheath body 11. At this time, the tube 220 becomes unnecessary, and the number of components can be reduced.
  • the four second magnetic members 231 have the same magnetic force, but may have different magnetic forces. At this time, a difference is generated in the repulsive force generated between the first magnetic member 61 and the sheath 10 can be displaced.
  • the lengths of the wires 232 are all the same, but the lengths may be different from each other. At this time, the sheath 10 can be displaced by the difference in the length of the wire.
  • two elastic members 102 and 230 are provided in the axial direction, but may be one or three or more.
  • the optical coherence tomography catheter is used.
  • the optical coherence tomography catheter may be used.
  • Imaging core imaging member
  • 60 drive shaft 61 1st magnetic member, 100, 200 moving member, 101, 210 sheath member, 102,230 bullet member, 220 tubes, 221 third magnetic member; 231 second magnetic member, 232 wire rod, L biological lumen, S, S1, S2 space.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Endoscopes (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

L'invention concerne un dispositif médical qui peut déplacer de façon appropriée une gaine dans la direction radiale à l'intérieur d'une lumière d'organisme. Un dispositif médical comprend une gaine (10) qui est introduite dans une lumière d'organisme (L), un élément de capture d'image (21) qui est disposé à l'intérieur de la gaine (10) et qui obtient une image de l'intérieur de la lumière d'organisme (L), et un élément de déplacement (100, 200) qui est disposé entre la gaine (10) et la lumière d'organisme (L) et qui déplace la gaine (10) dans la direction radiale par application d'une force sur la gaine (10), la force agissant dans la direction radiale de la section de corps de gaine (11).
PCT/JP2013/056492 2012-03-26 2013-03-08 Dispositif médical WO2013146196A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012070412A JP2015109885A (ja) 2012-03-26 2012-03-26 医療用デバイス
JP2012-070412 2012-03-26

Publications (1)

Publication Number Publication Date
WO2013146196A1 true WO2013146196A1 (fr) 2013-10-03

Family

ID=49259464

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/056492 WO2013146196A1 (fr) 2012-03-26 2013-03-08 Dispositif médical

Country Status (2)

Country Link
JP (1) JP2015109885A (fr)
WO (1) WO2013146196A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016059550A (ja) * 2014-09-17 2016-04-25 テルモ株式会社 カテーテル

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58133227A (ja) * 1982-02-03 1983-08-08 株式会社日立製作所 内視超音波診断装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58133227A (ja) * 1982-02-03 1983-08-08 株式会社日立製作所 内視超音波診断装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016059550A (ja) * 2014-09-17 2016-04-25 テルモ株式会社 カテーテル

Also Published As

Publication number Publication date
JP2015109885A (ja) 2015-06-18

Similar Documents

Publication Publication Date Title
EP2931131B1 (fr) Cathéter rotatif avec support de tige d'entraînement de corps de cathéter étendu
JP4065167B2 (ja) カテーテル
JP5662846B2 (ja) カテーテル
WO2016143204A1 (fr) Aiguille de ponction pour endoscopes et système de biopsie
EP3178405B1 (fr) Aiguille de ponction pour endoscope
JP2006521119A (ja) 近位領域および遠位領域を有するカテーテル
US20140171804A1 (en) Rotational Sensing Catheter with Self-Supporting Drive Shaft Section
JP2012223346A (ja) カテーテル
WO2013161764A1 (fr) Élément de manœuvre
CN111298271B (zh) 导管
US10792475B2 (en) Medical tube and medical device
JP5399817B2 (ja) 挿通補助具およびカテーテル
JP2012217588A (ja) 医療用デバイス
JP6211874B2 (ja) 診断用カテーテル
WO2013146196A1 (fr) Dispositif médical
JP6103775B2 (ja) 光学医療用デバイス及び光学医療用デバイスの制御方法
JP2017093506A (ja) 画像診断用カテーテル
JP5985131B1 (ja) 内視鏡用穿刺針及び生検システム
JP2018047063A (ja) 接続ポートおよび医療用デバイス
JP6779799B2 (ja) 医療デバイス
JP6247160B2 (ja) 医療用デバイス
JP7463246B2 (ja) 内視鏡及び医療機器
JP2018033697A (ja) 医療用デバイス
JP2018042819A (ja) 医療用デバイス
JP6400586B2 (ja) ガイドワイヤ

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13768687

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13768687

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP