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WO2025053235A1 - Système de cathéter, système de fixation de cathéter, objet à fixer et outil de fixation - Google Patents

Système de cathéter, système de fixation de cathéter, objet à fixer et outil de fixation Download PDF

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Publication number
WO2025053235A1
WO2025053235A1 PCT/JP2024/031925 JP2024031925W WO2025053235A1 WO 2025053235 A1 WO2025053235 A1 WO 2025053235A1 JP 2024031925 W JP2024031925 W JP 2024031925W WO 2025053235 A1 WO2025053235 A1 WO 2025053235A1
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WO
WIPO (PCT)
Prior art keywords
passage
wire
length
fixed
catheter system
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.)
Pending
Application number
PCT/JP2024/031925
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English (en)
Japanese (ja)
Inventor
邦泰 新妻
真也 園部
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.)
Tohoku University NUC
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Tohoku University NUC
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Filing date
Publication date
Application filed by Tohoku University NUC filed Critical Tohoku University NUC
Publication of WO2025053235A1 publication Critical patent/WO2025053235A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding 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
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/02—Holding devices, e.g. on the body
    • 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
    • A61M25/09—Guide wires

Definitions

  • the present invention relates to a catheter system, a catheter fixing system, a fixed body, and a fixing device.
  • a catheter system comprising a catheter device and a fixture is known.
  • the catheter device comprises a tube portion having a first passage, a connection portion having a second passage that communicates with the first passage at a proximal end that is the proximal end of the tube portion and extends along a straight line, and a wire that passes through the inside of the first passage and the second passage.
  • the fixture fixes the connection portion.
  • the distal wire extension length which is the length of the wire from the distal end of the tubular section, or the tubular section distal end, to the distal end of the wire, or the wire distal end
  • the distal wire extension length is measured by taking an X-ray of the area including the distal end of the tubular section and the distal end of the wire.
  • One of the objectives of the present invention is to match the distal wire protrusion length to the target length with high precision.
  • a catheter system in one aspect of the present invention, includes a catheter device and a fixture.
  • the catheter device comprises a tubular portion having a first passage, a connecting portion having a second passage that communicates with the first passage at a proximal end that is the proximal end of the tubular portion and extends along a straight line, and a wire that passes through the inside of the first passage and the second passage.
  • the fastener has a connection portion removably fixed at a fixed position such that the second passage extends in the extension direction, and has a mark at a position spaced a distance from the fixed position in the extension direction.
  • the separation distance is the total length of the wire minus the sum of the target length, which is the target value of the distal wire protrusion length, which is the length of the wire from the distal end of the tube, which is the distal end of the tube, to the distal end of the wire, which is the distal end of the wire, when the connection part is fixed to the fixture, and the length of the first and second passages from the distal end of the tube to the fixed position.
  • a catheter fixing system in another aspect of the present invention, includes a fixable body and a fixing device.
  • the fixed body constitutes at least a part of the connection portion of a catheter device which includes a tubular portion having a first passage, a connection portion having a second passage which communicates with the first passage at a proximal end which is the proximal end of the tubular portion and extends along a straight line, and a wire which passes through the inside of the first passage and the second passage.
  • the fixing device removably fixes the fixed body at a fixed position so that the second passage extends in the extension direction, and has a mark at a position spaced a distance from the fixed position in the extension direction.
  • the separation distance is the total length of the wire minus the sum of the target length, which is the target value of the distal wire protrusion length, which is the length of the wire from the distal end of the tubular section, which is the distal end of the tubular section, to the distal end of the wire, which is the distal end of the wire, when the object to be fixed is fixed to the fixture, and the lengths of the first and second passages from the distal end of the tubular section to the fixing position.
  • the fixed body constitutes at least a part of the connection part of a catheter device that includes a tube portion having a first passage, a connection part having a second passage that communicates with the first passage at a proximal end that is the proximal end of the tube portion and extends along a straight line, and a wire that passes through the inside of the first passage and the second passage.
  • the fixed body is removably fixed to the fixing tool at a fixed position so that the second passage extends in the extension direction.
  • the fixture has a mark at a position spaced a distance from the fixing position in the extension direction.
  • the separation distance is the total length of the wire minus the sum of the target length, which is the target value of the distal wire protrusion length, which is the length of the wire from the distal end of the tubular portion, which is the distal end of the tubular portion, to the distal end of the wire, which is the distal end of the wire, when the fixed body is fixed to the fixing device, and the length of the first and second passages from the distal end of the tubular portion to the fixed position.
  • the fixed body has a protrusion that protrudes in a direction perpendicular to the second passage.
  • the fixture has a recess into which at least a portion of the protrusion fits.
  • the fixing device fixes the connection portion of a catheter device that includes a tube portion having a first passage, a connection portion having a second passage that communicates with the first passage at a proximal end that is the proximal end of the tube portion and extends along a straight line, and a wire that passes through the inside of the first passage and the second passage.
  • the fastener has a connection portion removably fixed at a fixed position such that the second passage extends in the extension direction, and has a mark at a position spaced a distance from the fixed position in the extension direction.
  • the separation distance is the total length of the wire minus the sum of the target length, which is the target value of the distal wire protrusion length, which is the length of the wire from the distal end of the tube portion, which is the distal end of the tube portion, to the distal end of the wire, which is the distal end of the wire, when the connection portion is fixed to the fixing device, and the length of the first and second passages from the distal end of the tube portion to the fixed position.
  • the distal wire extension length can be matched to the target length with high precision.
  • FIG. 1 is a perspective view of a catheter system according to a first embodiment.
  • FIG. 2 is a plan view of the catheter system of the first embodiment.
  • FIG. 2 is a side view of the catheter system of the first embodiment.
  • FIG. 2 is a partially enlarged cross-sectional view of the catheter system of the first embodiment.
  • FIG. 1 is a perspective view of a catheter system according to a first embodiment.
  • FIG. 1 is a perspective view of a catheter system according to a first embodiment.
  • FIG. 2 is a plan view of a catheter system according to a first modified example of the first embodiment.
  • FIG. 2 is a partially enlarged cross-sectional view of a catheter system according to a first modified example of the first embodiment.
  • FIG. 1 is a perspective view of a catheter system according to a first embodiment.
  • FIG. 2 is a plan view of a catheter system according to a first modified example of the first embodiment.
  • FIG. 2 is a partially enlarged cross-sectional view of
  • FIG. 2 is a perspective view of a catheter system according to a first modified example of the first embodiment.
  • FIG. 2 is a perspective view of a catheter system according to a first modified example of the first embodiment.
  • FIG. 11 is a perspective view of a catheter system according to a second embodiment.
  • FIG. 11 is a plan view of a catheter system according to a second embodiment.
  • FIG. 11 is a side view of a catheter system according to a second embodiment.
  • FIG. 11 is a perspective view of a catheter system according to a second embodiment.
  • FIG. 11 is a perspective view of a catheter system according to a second embodiment.
  • FIG. 11 is a perspective view of a catheter system according to a second embodiment.
  • FIG. 13 is a plan view of a catheter system according to a first modified example of the second embodiment.
  • the catheter system of the first embodiment includes a catheter device and a fixture.
  • the catheter device comprises a tubular portion having a first passage, a connecting portion having a second passage that communicates with the first passage at a proximal end that is the proximal end of the tubular portion and extends along a straight line, and a wire that passes through the inside of the first passage and the second passage.
  • the fixing device has a connection portion removably fixed at a fixed position so that the second passage extends in the extension direction, and has a mark at a position spaced a distance from the fixed position in the extension direction.
  • the separation distance is the total length of the wire minus the sum of the target length, which is the target value of the distal wire protrusion length, which is the length of the wire from the distal end of the tube, which is the distal end of the tube, to the distal end of the wire, which is the distal end of the wire, when the connection part is fixed to the fixture, and the length of the first and second passages from the distal end of the tube to the fixed position.
  • the connection portion to the fixing device and matching the position of the proximal end of the wire, which is the proximal end of the wire, with the position of the mark in the extension direction, the distal wire protrusion length can be matched to the target length with high accuracy.
  • the x-axis direction, the y-axis direction, and the z-axis direction may be respectively expressed as the left-right direction of the catheter system 1, the front-rear direction of the catheter system 1, and the up-down direction of the catheter system 1.
  • the catheter system 1 includes a catheter device 10 and a fixture 20 .
  • the catheter device 10 is used for intravascular surgery by being introduced into the blood vessels of a living body.
  • the catheter device 10 is used for injecting a contrast agent or a drug, transporting a coil for embolizing a blood vessel or an aneurysm, or transporting a treatment device for removing a thrombus or dilating a stenosis.
  • the catheter device 10 is used for treatment of blood vessels in the brain.
  • the catheter device 10 may also be used for treatment of blood vessels in a living body other than blood vessels in the brain.
  • Figure 4 is a view of a portion of a cross section of the catheter system 1 cut along a plane represented by line IV-IV in Figure 2, viewed in the positive direction of the y-axis.
  • Figure 5 is a right rear upper oblique view of the catheter system 1 in a state in which the catheter device 10 has been separated from the fixture 20.
  • Figure 6 is a view of the catheter system 1 from a position to the right of, behind, and below the catheter system 1 in a state in which the catheter device 10 has been separated from the fixture 20 (in other words, a right rear lower oblique view).
  • the catheter device 10 comprises a tube portion 11 , a connection portion 12 , and a wire 13 .
  • the tube portion 11 is a tubular body. Therefore, the tube portion 11 has a first passage inside the tube portion 11 over the entire length of the tube portion 11. The first passage may be expressed as a lumen.
  • the tube portion 11 is flexible. In this example, a cross section of the tube portion 11 cut by a plane perpendicular to the longitudinal direction of the tube portion 11 is annular.
  • the length of the tube portion 11 is 1.50 m, 1.53 m, 1.56 m, 1.57 m, 1.60 m, or 1.65 m.
  • the length of the tube portion 11 may be 0.50 m to 2.0 m.
  • the length of the tube portion 11 used for blood vessels in the head is often 1.50 m to 1.65 m.
  • the length of the tube portion 11 used for blood vessels in the abdomen is often 1.10 m to 1.50 m.
  • the outer diameter of the cross section of the pipe portion 11 is 0.3 mm to 1 mm.
  • the outer diameter of the cross section of the pipe portion 11 may be 1 mm to 5 mm.
  • the inner diameter of the cross section of the pipe portion 11 (in other words, the diameter of the first passage) is 0.2 mm to 0.9 mm.
  • the inner diameter of the cross section of the pipe portion 11 may be 0.9 mm to 4.5 mm.
  • the distal side corresponds to the side closer to the tip of the catheter device 10 (in this example, the tip of the tube portion 11 or wire 13, which is the front of the catheter device 10 when introduced into the blood vessel).
  • the proximal side corresponds to the side farther from the tip of the catheter device 10.
  • connection part 12 has a second passage inside the connection part 12.
  • the second passage communicates with the first passage of the tube part 11 at the proximal end, which is the end on the proximal side of the tube part 11, and extends along a straight line.
  • the second passage is cylindrical and extends along a straight line.
  • the diameter of the second passage is equal to the diameter of the first passage. Note that the diameter of the second passage may be different from the diameter of the first passage.
  • connection portion 12 includes a distal portion 121 adjacent to the tube portion 11, an intermediate portion 122 adjacent to the distal portion 121, and a proximal portion 123 adjacent to the intermediate portion 122.
  • Each of the distal portion 121, the intermediate portion 122, and the proximal portion 123 has a passage therein that constitutes the second passage.
  • the distal portion 121 is connected to the tube portion 11 at the proximal end of the tube portion 11.
  • the distal portion 121 is formed integrally with the tube portion 11.
  • the distal portion 121 may also be referred to as a hub.
  • the intermediate portion 122 has a protruding portion 122a that protrudes in a direction perpendicular to the second passage.
  • the protruding portion 122a is an annular body having a central axis that extends along the second passage.
  • the annular body is a circular annular body.
  • the protruding portion 122a may have rounded corners or filleted corners.
  • the protrusion 122a has a ferromagnetic material (e.g., iron, cobalt, nickel, etc.).
  • the protrusion 122a may have a plate-shaped ferromagnetic material only on the outer circumferential surface or in the vicinity of the outer circumferential surface.
  • the entire protrusion 122a may be made of a ferromagnetic material.
  • the protrusion 122a may be made of a material containing a powdered ferromagnetic material.
  • the middle portion 122 corresponds to the fixed body.
  • the proximal portion 123 has a large diameter portion 123a.
  • the large diameter portion 123a constitutes the proximal end of the proximal portion 123 and is cylindrical with a central axis extending along the second passage.
  • the diameter of the large diameter portion 123a is longer than the diameter of the intermediate portion 122 other than the convex portion 122a.
  • the large diameter portion 123a is a hemostatic valve.
  • the wire 13 is a thin wire.
  • the wire 13 passes through the first passage of the tube portion 11 and the second passage of the connection portion 12.
  • the length of the wire 13 is longer than the sum of the length of the first passage of the pipe portion 11 and the length of the second passage of the connection portion 12.
  • the length of the wire 13 is 2.0 m.
  • the length of the wire 13 may be selected depending on the sum of the length of the first passage and the length of the second passage, and may be, for example, 0.50 m to 3 m.
  • the diameter of the wire 13 is slightly smaller than the diameter of the first passage. In this example, the diameter of the wire 13 is 0.2 mm to 0.5 mm. Alternatively, the diameter of the wire 13 may be 0.5 mm to 1 mm.
  • the fixture 20 includes a base portion 21 and a plurality of legs 22 (four legs in this example).
  • the base portion 21 has a flat plate shape extending along a plane perpendicular to the z-axis.
  • the base portion 21 has a rectangular shape having a short side extending in the x-axis direction and a long side extending in the y-axis direction.
  • the length of the long side of the base portion 21 is 520 mm.
  • the length of the long side of the base portion 21 may be 300 mm to 600 mm.
  • the length of the short side of the base portion 21 is 120 mm.
  • the length of the short side of the base portion 21 may be 60 mm to 240 mm.
  • the base portion 21 may have a shape other than a rectangle (for example, a trapezoid, a triangle, a semi-ellipse, or a rectangle with rounded corners).
  • the base portion 21 has a first recess 21a, a scale portion 21b, and a second recess 21c.
  • the first recess 21a forms a bottomed hole in the end face in the positive direction of the z-axis of the base portion 21.
  • the connection portion 12 is fixed to the fixture 20, the first recess 21a is located vertically below the connection portion proximal end portion (in this example, the large diameter portion 123a), which is the proximal end portion of the connection portion 12.
  • the first recess 21a extends over an area that includes the large diameter portion 123a.
  • the first recess 21a extends from a position on the negative side of the y-axis beyond the large diameter portion 123a to a position on the positive side of the y-axis beyond the large diameter portion 123a, and in the x-axis direction, extends from a position on the negative side of the x-axis beyond the large diameter portion 123a to a position on the positive side of the x-axis beyond the large diameter portion 123a.
  • the length of the first recess 21a in the y-axis direction is 40 mm.
  • the length of the first recess 21a in the y-axis direction may be 20 mm to 60 mm.
  • the first recess 21a has a shape such that when liquid is introduced into the first recess 21a, at least a portion of the liquid is discharged from the first recess 21a.
  • the first recess 21a may have a shape such that when liquid is introduced into the first recess 21a, the liquid is not stored in the first recess 21a.
  • the first recess 21a extends in the x-axis direction from the end face of the base portion 21 in the negative direction of the x-axis to the end face of the base portion 21 in the positive direction of the x-axis.
  • the bottom surface of the hole formed by the first recess 21a is a horizontal plane.
  • the bottom surface of the hole formed by the first recess 21a may be inclined with respect to the horizontal plane.
  • the bottom surface of the hole formed by the first recess 21a may be inclined with respect to the horizontal plane so that one of both ends in the x-axis direction is higher than the other.
  • the bottom surface of the hole formed by the first recess 21a may be inclined with respect to the horizontal plane so that the center in the x-axis direction is higher than both ends in the x-axis direction.
  • the first recess 21a may have a hole penetrating the base portion 21 in the z-axis direction at the bottom surface of the hole formed by the first recess 21a.
  • the scale portion 21b has multiple scale lines on the end face of the base portion 21 in the positive direction of the z-axis.
  • the scale portion 21b extends in the y-axis direction from the end of the base portion 21 in the negative direction of the y-axis to a position further in the negative direction of the y-axis than the first recess 21a.
  • the scale portion 21b is located in the center of the base portion 21 in the x-axis direction.
  • the scale portion 21b may also be located at the end of the base portion 21 in the x-axis direction.
  • Each scale line is a straight line extending along the x-axis direction and having a predetermined length.
  • the multiple scale lines have a predetermined first unit distance between adjacent scale lines in the y-axis direction. In other words, the multiple scale lines are equally spaced in the y-axis direction.
  • the first unit distance is 1 mm.
  • the first unit distance may also be 0.5 mm, 2 mm, etc.
  • the multiple scale lines may have a length that is longer than the other scale lines for each second unit distance that is longer than the first unit distance in the y-axis direction.
  • the second unit distance is 5 mm or 10 mm.
  • the scale line located at the end in the negative y-axis direction is located on the end side of the base portion 21 in the negative y-axis direction.
  • the scale line located at the end in the negative y-axis direction has a position that is separated from the fixed position in the y-axis direction by a separation distance.
  • the y-axis direction corresponds to the extension direction.
  • the scale portion 21b may have numbers indicating distances in the y-axis direction. Furthermore, in addition to the scale lines, or instead of the scale lines, the scale portion 21b may have figures such as arrows, triangles, or diamonds. In this case, the figures also correspond to marks.
  • the fixed position is a position where the connection portion 12 is fixed to the fixture 20.
  • the fixed position is the position of the second recess 21c.
  • the separation distance is the sum of the target length, which is a target value of the distal wire protrusion length, and the lengths of the first and second passages from the distal end of the tube portion to the fixed position, when the connection portion 12 is fixed to the fixture 20, subtracted from the entire length of the wire 13 (in other words, the entire length).
  • the distal end of the tube portion is the distal end of the tube portion 11.
  • the distal wire protrusion length is the length of the wire 13 from the distal end of the tube portion to the distal end of the wire 13, which is the distal end of the wire 13.
  • the target length is 5 mm, but the target length may be a length between 0 mm and 60 mm.
  • the scale line located at the end in the negative y-axis direction corresponds to the mark.
  • the end edge of the base portion 21 in the negative y-axis direction corresponds to the edge extending in the x-axis direction perpendicular to the y-axis direction.
  • the end edge of the base portion 21 in the negative y-axis direction (in other words, the edge) also constitutes the mark. Note that in this example, since the end edge of the base portion 21 in the negative y-axis direction constitutes the mark, the base portion 21 does not need to have the scale portion 21b.
  • the graduation line having a position separated by the separation distance from the fixed position in the y-axis direction may correspond to the mark.
  • the graduation section 21b may only have a graduation line having a position separated by the separation distance from the fixed position in the y-axis direction.
  • the second recess 21c forms a bottomed hole in the end face of the base portion 21 in the positive direction of the z-axis.
  • the hole formed by the second recess 21c has a shape into which a portion of the protrusion 122a can be removably fitted, so that the second passage of the connection portion 12 extends in the y-axis direction when the connection portion 12 is fixed to the fixing device 20.
  • the portion of the protrusion 122a that fits into the hole formed by the second recess 21c is the end of the protrusion 122a in the vertically downward direction.
  • the second recess 21c is located in the center of the base portion 21 in the x-axis direction, and is located in the y-axis direction more positive than the first recess 21a.
  • the second recess 21c has a magnet 21c1.
  • the magnet 21c1 is located at or near the bottom surface of the hole formed by the second recess 21c. In this example, the magnet 21c1 is located in the center of the bottom surface of the hole formed by the second recess 21c.
  • connection portion 12 is removably secured to the fixture 20 in a fixed position such that the second passage of the connection portion 12 extends in the y-axis direction.
  • the second recess 21c has a magnet 21c1
  • the protrusion 122a has a ferromagnetic material.
  • the second recess 21c may have a ferromagnetic material
  • the protrusion 122a may have a magnet.
  • each leg 22 protrude in the negative direction of the z axis from the end face of the base 21 in the negative direction of the z axis.
  • each leg 22 is frustum-shaped with a central axis extending in the z axis direction.
  • each leg 22 may have a shape other than a frustum cone (for example, a cylindrical, hemispherical, or polygonal prism shape).
  • the position of each leg 22 relative to the base 21 in the z axis direction is adjustable. Note that the position of each leg 22 relative to the base 21 in the z axis direction may not be adjustable.
  • the multiple legs 22 are located at the four corners of the base portion 21.
  • the number of legs 22 included in the fixing device 20 may be three.
  • the multiple legs 22 may be located near both ends of the end side of the base portion 21 in the negative direction of the y axis and near the midpoint of the end side in the positive direction of the y axis.
  • the anchor 20 and intermediate section 122 correspond to a catheter anchoring system.
  • connection portion 12 is removably fixed to the fixture 20 at the fixed position such that the second passage of the connection portion 12 extends in the y-axis direction.
  • the user then aligns the position of the proximal end of the wire 13 with the position of the marks (in this example, the scale line located at the end in the negative y-axis direction of the multiple scale lines, and the end edge of the base portion 21 in the negative y-axis direction). The user then checks that the distal wire protrusion length matches the target length.
  • the marks in this example, the scale line located at the end in the negative y-axis direction of the multiple scale lines, and the end edge of the base portion 21 in the negative y-axis direction.
  • connection part 12 and the wire 13 are alternately advance the tip of the wire 13 and the tip of the tube part 11 within the blood vessel of the living body. Note that the user may manipulate the connection part 12 and the wire 13 without removing the connection part 12 from the fixing device 20.
  • connection part 12 is removably fixed to the fixture 20 at the fixed position so that the second passage of the connection part 12 extends in the y-axis direction.
  • the user checks the distance in the y-axis direction between the position of the proximal end of the wire and the position of the mark. This allows the user to check the difference between the distal wire extension length and the target length. Then, if the user wishes to match the distal wire extension length to the target length, the user manipulates the connection portion 12 and the wire 13 to match the position of the proximal end of the wire to the position of the mark.
  • the catheter system 1 of the first embodiment includes the catheter device 10 and the fixture 20.
  • the catheter device 10 comprises a tubular portion 11 having a first passage, a connecting portion 12 having a second passage that communicates with the first passage at a proximal end, which is the proximal end of the tubular portion 11, and extends along a straight line, and a wire 13 that passes through the inside of the first passage and the second passage.
  • the fixing device 20 has the connection portion 12 removably fixed at a fixed position so that the second passage extends in the extension direction, and has a mark at a position spaced a distance from the fixed position in the extension direction.
  • the separation distance is the total length of the wire 13 minus the sum of the target length, which is the target value of the distal wire protrusion length, which is the length of the wire 13 from the distal end of the tube 11 to the distal end of the wire 13, when the connection part 12 is fixed to the fixture 20, and the length of the first and second passages from the distal end of the tube to the fixed position.
  • connection portion 12 By fixing the connection portion 12 to the fixture 20 and aligning the position of the proximal end of the wire, which is the proximal end of the wire 13, with the position of the mark in the extension direction, the distal wire protrusion length can be matched to the target length with high accuracy.
  • the fixing device 20 has a first recess 21a vertically below the proximal end of the connection part, which is the proximal end of the connection part 12, when the connection part 12 is fixed to the fixing device 20.
  • the proximal end of the connection part may be operated by the user's hand. Therefore, when the proximal end of the connection part is operated while the connection part is fixed to the fixing device, there is a risk that the fixing device may prevent the user from operating the proximal end of the connection part by hand.
  • the fixing device 20 has a first recess 21a vertically below the proximal end of the connection part when the connection part 12 is fixed to the fixing device 20. This prevents the fixing device 20 from interfering with the operation of the proximal end of the connection part by the user's hand when the proximal end of the connection part is operated while the connection part 12 is fixed to the fixing device 20.
  • the fixing device 20 does not have to have the first recess 21a.
  • the diameter of the intermediate portion 122 may be longer than the diameter of the large diameter portion 123a so that a sufficient gap is formed between the proximal end of the connection portion and the base portion 21 when the connection portion 12 is fixed to the fixing device 20.
  • the first recess 21a has a shape that allows at least a portion of the liquid to be discharged when the liquid is introduced into the first recess 21a.
  • the catheter system 1 can prevent liquid from accumulating in the first recess 21a.
  • the first recess 21a may have a shape that allows the liquid to be stored when the liquid is introduced into the first recess 21a.
  • connection portion 12 has a protrusion 122a that protrudes in a direction perpendicular to the second passage.
  • the fixing device 20 has a second recess 21c into which at least a portion of the protrusion 122a fits.
  • connection part 12 is fixed to the fixing device 20 to be set accurately to a predetermined position.
  • the convex portion 122a has one of a ferromagnetic material and a magnet (in this example, a ferromagnetic material).
  • the second concave portion 21c has the other of a ferromagnetic material and a magnet (in this example, a magnet 21c1).
  • connection part 12 This allows the connection part 12 to be easily fixed to the fixing device 20, and prevents the connection part 12 from accidentally coming off the fixing device 20. Also, the connection part 12 can be easily removed from the fixing device 20.
  • the convex portion 122a and the second concave portion 21c do not have to have a ferromagnetic material or a magnet.
  • connection portion 12 includes a distal portion 121 adjacent to the tube portion 11, an intermediate portion 122 adjacent to the distal portion 121, and a proximal portion 123 adjacent to the intermediate portion 122.
  • Each of the distal portion 121, the intermediate portion 122, and the proximal portion 123 has a passage that constitutes the second passage.
  • the intermediate portion 122 includes a convex portion 122a, and is removably fixed to the distal portion 121 by being screwed into the distal portion 121, and is removably fixed to the proximal portion 123 by being screwed into the proximal portion 123.
  • connection portion is often made up of multiple parts that are removably fixed by screwing together. Therefore, according to the catheter system 1, the configuration of the connection portion 12 can be easily changed between a configuration that does not have an intermediate portion 122 and a configuration that has an intermediate portion 122.
  • the connecting portion 12 may not include the intermediate portion 122.
  • the connecting portion 12 is removably fixed to the distal portion 121 by screwing the proximal portion 123 into the distal portion 121, and the distal portion 121 or the proximal portion 123 may have the convex portion 122a.
  • the distal portion 121 may be configured by a plurality of parts. In this case, the plurality of parts may be removably fixed to each other by screwing them together.
  • the proximal portion 123 may be configured by a plurality of parts. In this case, the plurality of parts may be removably fixed to each other by being screwed together.
  • the protrusion 122a is an annular body having a central axis extending along the second passage. A part of the protrusion 122a fits into the second recess 21c when the connection part 12 is fixed to the fixture 20.
  • connection part may be operated so as to rotate around a rotation axis extending along the second passage. In this case, if the connection part can be fixed to the fixture only when the rotational position of the connection part is a specific position, it may be difficult to fix the connection part to the fixture.
  • the catheter system according to the first modified example of the first embodiment differs from the catheter system according to the first embodiment mainly in that the connection section does not include an intermediate section.
  • the same reference numerals as those used in the first embodiment denote the same or substantially similar components.
  • a catheter system 1A As shown in Figs. 7 to 10, a catheter system 1A according to a first modified example of the first embodiment includes a catheter device 10A and a fixture 20A.
  • the protrusion 124aA has a ferromagnetic material (e.g., iron or nickel).
  • the protrusion 124aA may have a plate-shaped ferromagnetic material only on the outer wall surface or in the vicinity of the outer wall surface.
  • the entire protrusion 124aA may be made of a ferromagnetic material.
  • the protrusion 124aA may be made of a material containing a powdered ferromagnetic material.
  • the outer periphery 124A corresponds to the object to be fixed.
  • the outer circumferential portion 124A may have a member that engages with the proximal portion 123 so as to prohibit the outer circumferential portion 124A from moving relative to the small diameter portion 123b in the direction along the second passage.
  • the outer circumferential portion 124A and the small diameter portion 123b may have a protrusion extending along a plane perpendicular to the second passage and a groove into which the protrusion fits, on the surface where the outer circumferential portion 124A and the small diameter portion 123b contact each other.
  • the outer circumferential portion 124A may be configured so that the proximal portion 123 is non-rotatable.
  • Fixture 20A differs from fixture 20 of the first embodiment in that fixture 20A includes a base portion 21A instead of base portion 21.
  • the base portion 21A differs from the base portion 21 of the first embodiment in that it includes a second recess 21cA instead of the second recess 21c.
  • the second recess 21cA forms a bottomed hole on the end face of the base portion 21A in the positive direction of the z-axis.
  • the hole formed by the second recess 21cA has a shape into which the protrusion 124aA can be removably fitted so that the second passage of the connection portion 12A extends in the y-axis direction when the connection portion 12A is fixed to the fixing device 20A.
  • the second recess 21cA is located in the center of the base portion 21A in the x-axis direction, and is located in the y-axis direction more positive than the first recess 21a.
  • the second recess 21cA has a magnet 21c1A.
  • the magnet 21c1A is located at or near the bottom surface of the hole formed by the second recess 21cA. In this example, the magnet 21c1A extends across the entire bottom surface of the hole formed by the second recess 21cA.
  • connecting portion 12A is removably secured to fastener 20A at a fixed position such that the second passage of connecting portion 12A extends in the y-axis direction.
  • anchor 20A and outer periphery 124A correspond to a catheter anchoring system.
  • the connection portion 12A includes a main body portion (in this example, a distal portion 121 and a proximal portion 123) having a second passage, and an outer periphery portion 124A having a convex portion 124aA and surrounding the outer periphery of the main body portion so that the main body portion can rotate around a rotation axis extending along the second passage.
  • connection part may be operated so as to rotate around a rotation axis extending along the second passage. In this case, if the connection part can be fixed to the fixture only when the rotational position of the connection part is a specific position, it may be difficult to fix the connection part to the fixture.
  • connection part 12A is rotatable relative to the outer periphery 124A having the protrusion 124aA. Therefore, regardless of the rotational position of the main body part, the outer periphery 124A can be fixed to the fixing device 20A. As a result, the connection part 12A can be easily fixed to the fixing device 20A.
  • the catheter system according to the second embodiment differs from the catheter system according to the first embodiment mainly in that the fixing device is configured to be able to change the position of the mark.
  • the following mainly describes the differences.
  • the same reference numerals as those used in the first embodiment denote the same or substantially similar parts.
  • a catheter system 1B of the second embodiment differs from the catheter system 1 of the first embodiment in that a fixture 20B is provided instead of the fixture 20.
  • Figure 11 is a right rear upper perspective view of the catheter system 1B.
  • Figure 12 is a plan view of the catheter system 1B.
  • Figure 13 is a right side view of the catheter system 1B.
  • Figure 14 is a right rear upper perspective view of the catheter system 1B when the catheter device 10 is separated from the fixture 20B.
  • Figure 15 is a right rear lower perspective view of the catheter system 1B when the catheter device 10 is separated from the fixture 20B.
  • Figure 16 is a right rear upper perspective view of the catheter system 1B when the fixture 20B is in a contracted state.
  • the fixing device 20B includes a fixing portion 23B, a mark portion 24B, a pair of bolts 25B, a pair of nuts 26B, and a plurality of (four in this example) legs 27B.
  • the fixed portion 23B has a flat plate shape extending along a plane perpendicular to the z-axis.
  • the fixed portion 23B has a rectangular shape having a short side extending in the x-axis direction and a long side extending in the y-axis direction.
  • the length of the long side of the fixed portion 23B is 300 mm.
  • the length of the long side of the fixed portion 23B may be 100 mm to 500 mm.
  • the length of the short side of the fixing portion 23B is 120 mm.
  • the length of the short side of the fixing portion 23B may be 60 mm to 240 mm.
  • the fixing portion 23B may have a shape other than a rectangle (for example, a trapezoid, a triangle, a semi-ellipse, or a rectangle with rounded corners).
  • the fixing portion 23B has a first recess 23aB, a notch 23bB, a downward protrusion 23cB, and a second recess 23dB.
  • the first recess 23aB has a similar configuration to the first recess 21a of the first embodiment.
  • the length of the edge of the notch formed by the cutout portion 23bB is 40 mm.
  • the length of the edge of the notch formed by the cutout portion 23bB may be 20 mm to 60 mm.
  • the cutout formed by the cutout portion 23bB may be rectangular.
  • the downward protrusion 23cB protrudes in the negative direction of the z axis from the end face of the fixed part 23B in the negative direction of the z axis.
  • the downward protrusion 23cB is a part of the fixed part 23B that is longer in length in the z axis direction (in other words, thicker) than the parts of the fixed part 23B other than the downward protrusion 23cB.
  • the downward protrusion 23cB When the fixed portion 23B is viewed in the positive direction of the z-axis, the downward protrusion 23cB has a rectangular shape with a long side that coincides with the short side of the fixed portion 23B and a short side that extends in the y-axis direction.
  • the downward protrusion 23cB is located at the end of the fixed portion 23B in the positive direction of the y-axis, and extends across the entire fixed portion 23B in the x-axis direction.
  • the second recess 23dB has a configuration similar to that of the second recess 21c in the first embodiment. Therefore, in this example, the second recess 23dB has a magnet (not shown). Note that the second recess 23dB does not have to have a magnet.
  • the mark portion 24B is a flat plate extending along a plane perpendicular to the z-axis.
  • the mark portion 24B is rectangular with a short side extending in the x-axis direction and a long side extending in the y-axis direction.
  • the length of the long side of the mark portion 24B is 260 mm.
  • the length of the long side of the mark portion 24B may be 150 mm to 400 mm.
  • the length of the short side of the mark portion 24B is equal to the length of the short side of the fixed portion 23B. Note that the length of the short side of the mark portion 24B may be different from the length of the short side of the fixed portion 23B.
  • the mark portion 24B may have a shape other than a rectangle (for example, a trapezoid, a triangle, a semi-ellipse, or a rectangle with rounded corners).
  • the marking portion 24B has a pair of guide holes 24aB, an upward protrusion 24bB, and a scale portion 24cB.
  • Each guide hole 24aB is a linear elongated hole extending in the y-axis direction. Each guide hole 24aB penetrates the mark portion 24B in the z-axis direction.
  • the pair of guide holes 24aB are spaced apart from each other in the x-axis direction. In other words, the pair of guide holes 24aB are parallel to each other. In this example, the pair of guide holes 24aB are located at both ends of the mark portion 24B in the x-axis direction.
  • the bolt 25B and the nut 26B are fastened to each other through the guide hole 24aB so as to sandwich the fixing portion 23B and the mark portion 24B in the z-axis direction.
  • the mark portion 24B cannot move relative to the fixed portion 23B.
  • the mark portion 24B can move relative to the fixed portion 23B in the direction in which the guide hole 24aB extends (in this example, the y-axis direction). Therefore, the mark portion 24B is fixed to the fixed portion 23B so that its position in the extension direction (in this example, the y-axis direction) can be changed.
  • Figs. 11 to 15 show the state where mark portion 24B is located at the most negative position on the y axis relative to fixed portion 23B (in other words, where scale portion 24cB is farthest from the fixed position) (in other words, where it is in an extended state).
  • Fig. 16 shows the state where mark portion 24B is located at the most positive position on the y axis relative to fixed portion 23B (in other words, where scale portion 24cB is closest to the fixed position) (in other words, where it is in a contracted state).
  • the upper protrusion 24bB protrudes in the positive direction of the z axis from the end face of the mark portion 24B in the positive direction of the z axis.
  • the upper protrusion 24bB is a portion of the mark portion 24B that is longer in length (or thickness) in the z axis direction than the portions of the mark portion 24B other than the upper protrusion 24bB.
  • the scale portion 24cB has multiple scale lines on the end face of the upper protrusion 24bB in the positive direction of the z-axis.
  • the scale portion 24cB extends over the entire upper protrusion 24bB in the y-axis direction.
  • the scale portion 24cB is located in the center of the upper protrusion 24bB in the x-axis direction.
  • the scale portion 24cB may also be located at the end of the upper protrusion 24bB in the x-axis direction.
  • Each scale line is a straight line extending along the x-axis direction and having a predetermined length.
  • the multiple scale lines have a predetermined third unit distance between adjacent scale lines in the y-axis direction. In other words, the multiple scale lines are equally spaced in the y-axis direction.
  • the third unit distance is 1 mm.
  • the third unit distance may also be 0.5 mm, 2 mm, etc.
  • the multiple scale lines may have a length that is longer than the other scale lines for every fourth unit distance that is longer than the third unit distance in the y-axis direction.
  • the fourth unit distance is 5 mm or 10 mm.
  • the scale line located at the end in the negative direction of the y axis is located on the end side of the upper protrusion 24bB in the negative direction of the y axis.
  • the scale line located at the end in the negative direction of the y axis has a position that is separated from the fixed position in the y axis direction by a separation distance.
  • the y axis direction corresponds to the extension direction.
  • the scale portion 24cB may have numbers that indicate distance in the y-axis direction. Furthermore, in addition to the scale lines, or instead of the scale lines, the scale portion 24cB may have figures such as arrows, triangles, or diamonds. In this case, the figures also correspond to marks.
  • the fixed position is a position where the connection portion 12 is fixed to the fixing portion 23B.
  • the fixed position is the position of the second recess 23dB.
  • the separation distance is the sum of the target length, which is a target value of the distal wire protrusion length, and the lengths of the first and second passages from the distal end of the tube portion to the fixed position when the connection portion 12 is fixed to the fixed portion 23B, subtracted from the entire length (in other words, the entire length) of the wire 13.
  • the distal end of the tube portion is the distal end of the tube portion 11.
  • the distal wire protrusion length is the length of the wire 13 from the distal end of the tube portion to the distal end of the wire 13, which is the distal end of the wire 13.
  • the target length is 5 mm, but the target length may be a length between 0 mm and 60 mm.
  • the scale line located at the end in the negative y-axis direction corresponds to the mark.
  • the end edge of mark portion 24B in the negative y-axis direction corresponds to the edge extending in the x-axis direction perpendicular to the y-axis direction.
  • the end edge of mark portion 24B in the negative y-axis direction (in other words, the edge) also constitutes the mark. Note that in this example, since the end edge of mark portion 24B in the negative y-axis direction constitutes the mark, mark portion 24B does not need to have scale portion 24cB.
  • the graduation line that is located at the separation distance from the fixed position in the y-axis direction among the multiple graduation lines may correspond to the mark.
  • a pair of legs 27B of the multiple legs 27B protrude in the negative direction of the z axis from an end face of the fixing portion 23B that faces in the negative direction of the z axis.
  • Another pair of legs 27B of the multiple legs 27B protrude in the negative direction of the z axis from an end face of the mark portion 24B that faces in the negative direction of the z axis.
  • each leg 27B is in the shape of a truncated cone having a central axis extending in the z-axis direction.
  • each leg 27B may have a shape other than a truncated cone (for example, a hemisphere, a cylinder, a polygonal prism, etc.).
  • the position of each leg 27B can be adjusted in the z-axis direction relative to the fixed portion 23B or the mark portion 24B.
  • the position of each leg 27B can be adjusted in the z-axis direction relative to the fixed portion 23B or the mark portion 24B.
  • a pair of legs 27B located on the fixed portion 23B are located near both ends of the end side of the fixed portion 23B in the positive direction of the y axis.
  • a pair of legs 27B located on the mark portion 24B are located near both ends of the end side of the mark portion 24B in the negative direction of the y axis.
  • the number of legs 27B included in fixing device 20B may be three.
  • the multiple legs 27B may be located near both ends of the end side of mark portion 24B in the negative direction of the y axis and near the midpoint of the end side of fixing portion 23B in the positive direction of the y axis.
  • the anchor 20B and intermediate section 122 correspond to a catheter anchoring system.
  • connection portion 12 is removably fixed to the fixture 20B at the fixed position such that the second passage of the connection portion 12 extends in the y-axis direction.
  • the user then adjusts the position of the mark portion 24B relative to the fixed portion 23B by moving the mark portion 24B in the y-axis direction relative to the fixed portion 23B so that the position of the proximal end of the wire coincides with the position of the marks (in this example, the scale line located at the end in the negative y-axis direction of the multiple scale lines, and the end edge of the upper protrusion 24bB in the negative y-axis direction).
  • the user tightens the bolt 25B and the nut 26B. This makes the mark portion 24B immovable relative to the fixed portion 23B.
  • connection part 12 and the wire 13 are alternately advance the tip of the wire 13 and the tip of the tube part 11 within the blood vessel of the living body. Note that the user may manipulate the connection part 12 and the wire 13 without removing the connection part 12 from the fixing device 20B.
  • connection part 12 when the user wants to check the difference between the distal wire protrusion length and the target length, he or she fits a part of the protrusion 122a into the second recess 23dB. This causes the connection part 12 to be removably fixed to the fixture 20B at the fixed position so that the second passage of the connection part 12 extends in the y-axis direction.
  • the user checks the distance in the y-axis direction between the position of the proximal end of the wire and the position of the mark. This allows the user to check the difference between the distal wire extension length and the target length. Then, if the user wishes to match the distal wire extension length to the target length, the user manipulates the connection portion 12 and the wire 13 to match the position of the proximal end of the wire to the position of the mark.
  • the fixing tool 20B includes a fixing portion 23B and a mark portion 24B.
  • the fixing portion 23B is removably fixed to the connecting portion 12 at a fixed position such that the second passage extends in the extension direction.
  • the mark portion 24B has a mark and is fixed to the fixing portion 23B so that the position in the extension direction is changeable.
  • connection part is often formed by connecting multiple parts selected from multiple parts each having multiple functions. For this reason, there are many different total lengths of the connection part. In addition, there are also many different total lengths of the wire.
  • the connection portion 12 when the connection portion 12 is fixed to the fixed portion 23B, if the position of the proximal end of the wire coincides with the position of the mark in the extension direction, the position of the mark portion 24B can be changed relative to the fixed portion 23B so that the distal wire extension length coincides with the target length. This allows the user to quickly confirm that the distal wire extension length coincides with the target length with high accuracy by checking the position of the proximal end of the wire and the position of the mark in the extension direction.
  • the fixing device 20B may use other sliding mechanisms (e.g., a sliding mechanism using a rail or a sliding mechanism using a ball screw) as the sliding mechanism for moving the mark portion 24B relative to the fixing portion 23B.
  • other sliding mechanisms e.g., a sliding mechanism using a rail or a sliding mechanism using a ball screw
  • the catheter system according to the first modified example of the second embodiment differs from the catheter system according to the second embodiment mainly in that it has a scale line capable of measuring the position of the mark portion relative to the fixed portion.
  • the same reference numerals as those used in the second embodiment are used to denote the same or substantially similar objects.
  • a catheter system 1C of a first modified example of the second embodiment differs from the catheter system 1B of the second embodiment in that a fixture 20C is provided instead of the fixture 20B.
  • FIG. 17 is a plan view of the catheter system 1C.
  • Fixture 20C differs from fixture 20B of the second embodiment in that it includes mark portion 24C instead of mark portion 24B.
  • the mark portion 24C has a scale portion 24eC in addition to the configuration of the mark portion 24B of the second embodiment.
  • the scale portion 24eC has multiple scale lines on the end face of the mark portion 24C in the positive direction of the z axis, of the portion other than the upper protrusion 24bB.
  • the scale portion 24eC extends in the y axis direction over the entire portion of the mark portion 24C, other than the upper protrusion 24bB.
  • the scale portion 24eC is located in the center of the mark portion 24C in the x axis direction.
  • Each of the graduation lines of the scale section 24eC is a straight line extending along the x-axis direction and having a predetermined length.
  • the multiple graduation lines of the scale section 24eC have a predetermined fifth unit distance between adjacent graduation lines in the y-axis direction.
  • the multiple graduation lines of the scale section 24eC are equally spaced in the y-axis direction.
  • the fifth unit distance is 1 mm.
  • the fifth unit distance may be 0.5 mm, 2 mm, etc.
  • the multiple graduation lines of the scale section 24eC may be longer than the other graduation lines for every sixth unit distance that is longer than the fifth unit distance in the y-axis direction.
  • the sixth unit distance is 5 mm or 10 mm.
  • the scale portion 24eC may have numbers indicating distances in the y-axis direction in addition to the scale lines.
  • the scale portion 24eC may have figures such as arrows, triangles, or diamonds in addition to or instead of the scale lines.
  • the scale portion 24eC may have figures such as arrows, triangles, or diamonds in addition to the scale lines at every seventh unit distance in the y-axis direction, which is longer than the fifth unit distance.
  • the seventh unit distance is 50 mm.
  • the graduation line that coincides with the position of the end edge of the fixed section 23B in the negative direction of the y axis changes in accordance with the change in the position of the mark section 24C in the y axis direction relative to the fixed section 23B. Therefore, by using the graduation lines on the scale section 24eC, the user can measure the position of the mark section 24C in the y axis direction relative to the fixed section 23B.
  • the fixing device 20C has a scale line (in this example, the scale line of the scale portion 24eC) that can measure the position of the mark portion 24C in the extension direction (in this example, the y-axis direction) relative to the fixing portion 23B.
  • the length of the wire before replacement may differ from the length of the wire after replacement.
  • the position of the mark portion 24C relative to the fixed portion 23B can be measured in advance for each of the multiple wires 13 so that the distal wire protrusion length matches the target length.
  • the position of the mark portion 24C relative to the fixed portion 23B can be easily adjusted for the replaced wire 13 so that the distal wire protrusion length matches the target length.
  • the scale lines that allow the position of the mark portion 24C in the extension direction relative to the fixed portion 23B to be measured may be provided on the end face of the mark portion 24C in the x-axis direction (in other words, the side face), or on the end face of the fixed portion 23B in the x-axis direction (in other words, the side face).

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

Abstract

Un système de cathéter 1 comprend un dispositif de cathéter 10 et un outil de fixation 20. Le dispositif de cathéter comprend : une partie tube 11 ayant un premier passage ; une partie de liaison 12 ayant un second passage qui s'étend le long d'une ligne droite ; et un fil 13 passant à travers le premier passage et le second passage. Sur l'outil de fixation, la partie de liaison est fixée de manière amovible à une position de fixation de telle sorte que le second passage s'étend dans une direction d'extension. L'outil de fixation a une marque à une position située à distance de la position de fixation par une distance de séparation dans la direction d'extension. La distance de séparation est une longueur obtenue, dans un état dans lequel la partie de liaison est fixée à l'outil de fixation, en soustrayant, de la longueur totale du fil, la somme d'une longueur cible représentant une valeur cible d'une longueur de saillie de fil côté distal, qui est une longueur de fil de l'extrémité distale de la partie tube à l'extrémité distale du fil, et les longueurs du premier passage et du second passage de l'extrémité distale de la partie tube à la position de fixation.
PCT/JP2024/031925 2023-09-07 2024-09-05 Système de cathéter, système de fixation de cathéter, objet à fixer et outil de fixation Pending WO2025053235A1 (fr)

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JP2023145676A JP2025038830A (ja) 2023-09-07 2023-09-07 カテーテルシステム、カテーテル固定システム、被固定体、及び、固定具
JP2023-145676 2023-09-07

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004078227A2 (fr) * 2003-03-03 2004-09-16 Murphy Kieran P Procede et appareil pour reduire l'exposition a un faisceau de formation d'images
WO2008131017A2 (fr) * 2007-04-16 2008-10-30 C. R. Bard, Inc. Système de placement d'un cathéter assisté par un fil guide
WO2015153599A1 (fr) * 2014-03-31 2015-10-08 Clearstream Technologies Limited Structures de cathéter permettant de réduire l'utilisation de radioscopies au cours d'actes endovasculaires
WO2018121356A1 (fr) * 2016-12-30 2018-07-05 先健科技(深圳)有限公司 Fil de mesure
JP2020000418A (ja) * 2018-06-27 2020-01-09 メディカル・イノベイション株式会社 コネクター保持具

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004078227A2 (fr) * 2003-03-03 2004-09-16 Murphy Kieran P Procede et appareil pour reduire l'exposition a un faisceau de formation d'images
WO2008131017A2 (fr) * 2007-04-16 2008-10-30 C. R. Bard, Inc. Système de placement d'un cathéter assisté par un fil guide
WO2015153599A1 (fr) * 2014-03-31 2015-10-08 Clearstream Technologies Limited Structures de cathéter permettant de réduire l'utilisation de radioscopies au cours d'actes endovasculaires
WO2018121356A1 (fr) * 2016-12-30 2018-07-05 先健科技(深圳)有限公司 Fil de mesure
JP2020000418A (ja) * 2018-06-27 2020-01-09 メディカル・イノベイション株式会社 コネクター保持具

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