WO2014050570A1 - Instrument médical - Google Patents

Instrument médical Download PDF

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Publication number
WO2014050570A1
WO2014050570A1 PCT/JP2013/074569 JP2013074569W WO2014050570A1 WO 2014050570 A1 WO2014050570 A1 WO 2014050570A1 JP 2013074569 W JP2013074569 W JP 2013074569W WO 2014050570 A1 WO2014050570 A1 WO 2014050570A1
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WO
WIPO (PCT)
Prior art keywords
fluid
lumen
long
discharge
medical device
Prior art date
Application number
PCT/JP2013/074569
Other languages
English (en)
Japanese (ja)
Other versions
WO2014050570A8 (fr
Inventor
亮輔 山崎
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 WO2014050570A1 publication Critical patent/WO2014050570A1/fr
Publication of WO2014050570A8 publication Critical patent/WO2014050570A8/fr

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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
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • A61M25/0026—Multi-lumen catheters with stationary elements
    • A61M25/003—Multi-lumen catheters with stationary elements characterized by features relating to least one lumen located at the distal part of the catheter, e.g. filters, plugs or valves
    • 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
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • A61M25/0026—Multi-lumen catheters with stationary elements
    • A61M2025/0034—Multi-lumen catheters with stationary elements characterized by elements which are assembled, connected or fused, e.g. splittable tubes, outer sheaths creating lumina or separate cores
    • 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
    • A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
    • A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
    • A61M25/0026—Multi-lumen catheters with stationary elements
    • A61M2025/0037—Multi-lumen catheters with stationary elements characterized by lumina being arranged side-by-side
    • 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
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A61M2025/0059—Catheters; Hollow probes characterised by structural features having means for preventing the catheter, sheath or lumens from collapsing due to outer forces, e.g. compressing forces, or caused by twisting or kinking
    • 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
    • A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
    • A61M2025/0073—Tip designed for influencing the flow or the flow velocity of the fluid, e.g. inserts for twisted or vortex flow
    • 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
    • A61M2025/0183—Rapid exchange or monorail 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
    • A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
    • A61M25/0068—Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure
    • A61M25/007—Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked
    • 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
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0662—Guide tubes

Definitions

  • the present invention relates to a medical instrument used for supplying a fluid into a living body.
  • An catheter device for irrigation (perfusion) used for supplying various fluids in a living body is widely known.
  • the lumen through which the fluid flows is configured to be sealed so that the fluid does not leak from a portion other than the discharge hole.
  • the discharge holes provided in the irrigation lumen are respectively arranged at different positions in the circumferential direction. . Therefore, the problem is how to arrange the discharge holes in relation to the guide wire lumen.
  • a catheter device as described in Patent Document 1 below.
  • a guide wire or the like can be inserted and a main lumen through which fluid can flow, an irrigation lumen extending coaxially with the main lumen, and two fluids through which the fluid for expanding the balloon flows And a lumen for the pressurized medium.
  • the main lumen is provided with side holes every 120 degrees in the circumferential direction, the contrast medium and the like can be released in a balanced manner in the circumferential direction, and one hole is clogged during liquid feeding.
  • the present invention has been invented to solve the above-described problems, and provides a medical instrument that can uniformly discharge a fluid in a circumferential direction in a living body and has improved kink resistance. For the purpose.
  • the long member includes a first long piece including a lumen forming the insertion lumen, and a second long piece including a lumen forming the fluid lumen (1) ) Medical device.
  • the first long piece has a linear shape extending in the axial direction, and the second long piece is spirally wound around an axis of the first long piece.
  • the discharge part is constituted by a discharge hole, and the diameter of the discharge part provided on the distal end side of the long member is formed larger than the diameter of the discharge part located on the proximal end side of the long member.
  • the medical device according to (1) further including a balloon that is provided on the long member and can be expanded and contracted by injection and discharge of a pressurized medium.
  • the spiral portion is formed in the fluid lumen, and at least two or more discharge portions are provided at different positions in the axial direction of the spiral portion. It is possible to provide a medical device that can be uniformly discharged in the direction and has improved kink resistance.
  • the insertion lumen and the fluid lumen are partitioned by the partition wall member arranged in the internal space of the long member, the insertion lumen and the fluid lumen are formed by one long member. And can reduce the diameter of the medical device.
  • the rigidity of the partition member is larger than that of the long member, the rigidity of the entire medical instrument can be increased and the kink resistance of the medical instrument can be further improved. it can.
  • the insertion lumen is formed by the first long piece and the fluid lumen is formed by the second long piece, the insertion lumen and the fluid lumen are easily formed. be able to.
  • the second long piece is disposed by being spirally wound around the axis of the first long piece having a linear shape extending in the axial direction.
  • the spiral portion can be easily formed.
  • the rigidity of the entire medical instrument can be increased, The kink resistance of the instrument can be further improved.
  • the rigidity of the first elongate piece is relatively high, the kink resistance of the medical device can be improved.
  • the spiral portion is formed by winding the relatively rigid spiral portion around the outer periphery of the relatively long first long piece, the spiral portion can be easily formed.
  • the spiral portion is formed only in a predetermined range on the distal end side of the long member, the spiral portion can be easily formed. Further, the spiral portion only needs to be formed in the minimum necessary range, and the manufacturing cost of the medical instrument can be reduced.
  • the discharge amount from each discharge part is the same.
  • the fluid can be uniformly discharged in the circumferential direction in the living body.
  • a fluid can be supplied to a living body having a stenosis part by expanding the stenosis part with the balloon.
  • a medical device integrated with a balloon catheter can be provided.
  • FIG. 3 is a cross-sectional view taken along line 3-3 in FIG.
  • 1st Embodiment of this invention it is a figure which shows a mode that a fluid is supplied in the biological body.
  • 2nd Embodiment of this invention it is a figure which shows a mode that a fluid is supplied in the biological body.
  • 2nd Embodiment of this invention it is a figure which shows a mode that a fluid is supplied in the biological body.
  • FIG. 3rd Embodiment of this invention shows the medical device which concerns on 3rd Embodiment of this invention.
  • proximal end side the proximal operation side of the medical instrument 1 according to the first embodiment of the present invention
  • distal end side the side inserted into the living body lumen
  • FIG. 1 is a perspective view showing a medical instrument 1 according to the first embodiment of the present invention.
  • FIG. 2 is a side view showing the medical device 1 according to the first embodiment of the present invention.
  • FIG. 3 is a sectional view taken along line 3-3 in FIG.
  • the medical device 1 includes an insertion lumen 20 through which a medical device (not shown) having an elongated body portion can be inserted, and a spiral.
  • the second spiral portion (spiral portion) 31 extending in a shape is formed, and six fluid lumens 30 through which the fluid F can flow and six axially different positions in the second spiral portion 31 of the fluid lumen 30 are provided, and the fluid lumen And a discharge part 32 that discharges the fluid F flowing through 30.
  • the discharge unit 32 is omitted for easy understanding. Details will be described below.
  • the medical device 1 is formed with an insertion lumen 20 through which a medical device (not shown) having an elongated main body portion can be inserted, and a second spiral portion 31 extending in a spiral shape, A length provided with a fluid lumen 30 through which fluid can flow and six discharge portions 32 that are provided at six different positions in the axial direction in the second spiral portion 31 of the fluid lumen 30 and discharge the fluid F flowing through the fluid lumen 30.
  • the partition member 40 is disposed in the internal space of the long member 10 and the long member 10, and partitions the insertion lumen 20 and the fluid lumen 30.
  • the long member 10 forms an insertion lumen 20 and a fluid lumen 30 inside.
  • the material constituting the long member 10 is, for example, fluororesin such as ETFE (tetrafluoro 4 ethylene ethylene copolymer), PTFE (polytetrafluoroethylene), PE (polyethylene), PP (excellent in biocompatibility).
  • a thermoplastic resin such as polyolefin such as polypropylene), polyamide, polyester, and polyurethane.
  • the insertion lumen 20 is formed by a first space S ⁇ b> 1 configured by the inner peripheral surface 10 ⁇ / b> S of the long member 10 and the partition member 40.
  • the insertion lumen 20 includes a first spiral portion 21 that is formed only in a predetermined range on the distal end side of the long member 10.
  • the first spiral portion 21 is constituted by a partition member 40 in which a predetermined range on the tip side is formed in a spiral shape. Therefore, the first spiral portion 21 is formed only in a predetermined range on the distal end side of the long member 10.
  • the fluid lumen 30 is formed by the second space S ⁇ b> 2 constituted by the inner surface 10 ⁇ / b> S of the long member 10 and the partition member 40.
  • the second space S ⁇ b> 2 is provided on the opposite side of the first space S ⁇ b> 1 through the partition member 40 in the internal space of the long member 10.
  • six fluid lumens 30 are provided at six different positions in the axial direction in the second spiral portion 31 and the second spiral portion 31 formed only in a predetermined range on the distal end side of the long member 10, And a discharge section 32 that discharges the fluid F flowing through the lumen 30.
  • the second spiral portion 31 is provided to improve the kink resistance of the medical device 1 by dispersing the concentration of stress.
  • the second spiral portion 31 is configured by a partition member 40 in which a predetermined range on the tip side is formed in a spiral shape. Therefore, the second spiral portion 31 is formed only in a predetermined range on the distal end side of the long member 10.
  • the discharge unit 32 is configured by a discharge hole, and discharges the fluid F flowing through the fluid lumen 30.
  • Six discharge parts 32 are arranged at equal intervals around and around the axis of the long member 10. That is, the discharge unit 32 includes a first discharge unit 32A, a second discharge unit 32B, a third discharge unit 32C, a fourth discharge unit 32D, a fifth discharge unit 32E, and a sixth discharge unit 32F from the base end side.
  • the first discharge part 32A to the sixth discharge part 32F are provided at intervals of 60 degrees around the axis of the long member 10 and at intervals of 1 mm in the axial direction of the long member 10, respectively.
  • the axial interval is not limited to 1 mm.
  • the diameter of the discharge part 32 provided on the distal end side of the long member 10 is formed larger than the diameter of the discharge part 32 provided on the proximal end side of the long member 10. That is, the diameter is sequentially enlarged from the first discharge part 32A to the sixth discharge part 32F.
  • the first discharge part 32A to the sixth discharge part 32F may all have the same diameter.
  • the partition member 40 is disposed in the internal space of the long member 10 and divides the insertion lumen 20 and the fluid lumen 30.
  • the partition member 40 is formed in a spiral shape only in a predetermined range on the distal end side of the long member 10, and a range on the proximal end side from the predetermined range on the distal end side is formed in a planar shape. Further, the partition member 40 has a rigidity larger than that of the long member 10. According to this configuration, the rigidity of the medical instrument 1 as a whole can be increased, and the kink resistance of the medical instrument 1 can be improved.
  • the material which comprises the partition member 40 is metal materials, such as nickel titanium alloy and stainless steel, for example, it is not restricted to this, A plastic etc. may be sufficient.
  • the fluid F is supplied into the living body to perform cleaning in the living body.
  • the fluid F is, for example, physiological saline, but is not limited thereto.
  • the surgeon transfers the fluid F from the fluid storage part A in which the fluid F is stored into the fluid lumen 30 through a known tube T in which the fluid storage part A and the fluid lumen 30 are connected in a liquid-tight and air-tight manner.
  • Supply The fluid F supplied into the fluid lumen 30 moves from the proximal end side to the distal end side, and from the ejection section 32 provided on the distal end side, the first ejection section 32A, the second ejection section 32B, and the third ejection section 32C.
  • the fourth discharge part 32D, the fifth discharge part 32E, and the sixth discharge part 32F are discharged in this order.
  • the discharge amount discharged from the discharge part 32 located on the proximal end side and the discharge part 32 located on the distal end side are arranged.
  • the discharge amount discharged from the same can be made the same, and the fluid F can be discharged uniformly in the circumferential direction in the living body.
  • the second spiral portion 31 is formed in the fluid lumen 30, and the six discharge portions 32A to 32F are located at different positions in the axial direction of the second spiral portion 31. Since the medical device 1 is provided, the fluid F can be uniformly discharged in the circumferential direction in the living body, and the medical instrument 1 with improved kink resistance can be provided.
  • the insertion lumen 20 and the fluid lumen 30 are formed by the single long member 10. And the diameter of the medical device 1 can be reduced.
  • the rigidity of the partition member 40 is larger than the rigidity of the long member 10, the rigidity of the medical instrument 1 as a whole can be increased, and the kink resistance of the medical instrument 1 can be further improved.
  • the second spiral portion 31 is formed only in a predetermined range on the distal end side of the long member 10, the second spiral portion 31 can be easily formed. Moreover, what is necessary is just to form the 2nd spiral part 31 only in the minimum required range, and the manufacturing cost of the medical device 1 can be reduced.
  • the discharge part 32 since the discharge part 32 is arrange
  • the discharge part 32 is comprised by the discharge hole, and the diameter of the discharge part 32 provided in the front end side of the elongate member 10 is larger than the diameter of the discharge part 32 provided in the base end side of the elongate member 10. Is formed. For this reason, the discharge amount from each discharge part 32 can be made the same, and the fluid F can be uniformly discharged in the circumferential direction in the living body.
  • the second spiral portion 31 is formed in a spiral shape, a circumferential force is applied to the fluid F, and the discharge force is improved.
  • FIG. 5 is a perspective view showing a medical instrument 2 according to the second embodiment of the present invention.
  • the medical device 2 includes an insertion lumen 220 ⁇ / b> L through which a medical device (not shown) having a long body portion can be inserted, and a spiral portion that extends in a spiral shape.
  • the elongate member 210 is provided.
  • the elongate member 210 has a first elongate piece 220 having a lumen forming the insertion lumen 220L, and a second elongate piece 230 having a lumen forming the fluid lumen 230L.
  • the first long piece 220 forms an insertion lumen 220L therein. Further, the first long piece 220 has a linear shape extending in the axial direction. Further, the rigidity of the first long piece 220 is larger than the rigidity of the portion where the spiral portion 231 is formed in the second long piece 230. According to this structure, since the rigidity of the 1st elongate piece 220 is provided comparatively high, the kink resistance of the medical device 2 can be improved. Further, since the spiral portion 231 is formed by winding the spiral portion 231 having relatively low rigidity around the outer periphery of the first elongated piece 220 having relatively high rigidity, the spiral portion 231 can be easily formed.
  • the rigidity of the first long piece 220 may be greater than the rigidity of the second long piece 230 as a whole.
  • the material which comprises the 1st elongate piece 220 is a plastics, for example, it is not restricted to this, Metal materials, such as a nickel titanium alloy and stainless steel, may be sufficient.
  • the second long piece 230 forms a fluid lumen 230L inside.
  • the second long piece 230 has a spiral portion 231 formed only in a predetermined range on the distal end side of the long member 210.
  • the material constituting the second long piece 230 is, for example, a fluororesin such as ETFE (tetrafluoro-4 ethylene ethylene copolymer) or PTFE (polytetrafluoroethylene), PE (polyethylene), which has excellent biocompatibility.
  • a fluororesin such as ETFE (tetrafluoro-4 ethylene ethylene copolymer) or PTFE (polytetrafluoroethylene), PE (polyethylene), which has excellent biocompatibility.
  • Polyolefins such as PP (polypropylene), and thermoplastic resins such as polyamide, polyester, and polyurethane.
  • the spiral portion 231 is provided to improve the kink resistance of the medical instrument 2.
  • the spiral portion 231 is formed by arranging the second long piece 230 so as to be spirally wound around the axis of the first long piece 220.
  • the outside of the medical instrument 2 including the spiral portion 231 may be separately covered with a sheath or the like.
  • the discharge part 232 is constituted by a discharge hole, and discharges the fluid F flowing through the fluid lumen 230L.
  • Six discharge portions 232 are provided on the outer periphery of the spiral portion 231, and six discharge portions 232 are arranged at equal intervals around the axis of the long member 210 and in the axial direction.
  • the surgeon transfers the fluid F from the fluid reservoir A in which the fluid F is stored into the fluid lumen 230L via a known tube T in which the fluid reservoir A and the fluid lumen 230L are connected in a liquid-tight and air-tight manner.
  • Supply The fluid F supplied into the fluid lumen 230L moves from the proximal end side to the distal end side, and from the ejection section 232 provided on the distal end side, the first ejection section 232A, the second ejection section 232B, and the third ejection section 232C.
  • the fourth discharge unit 232D, the fifth discharge unit 232E, and the sixth discharge unit 232F are discharged in this order.
  • the long member 210 includes the first long piece 220 including the lumen forming the insertion lumen 220L and the lumen forming the fluid lumen 230L.
  • the insertion lumen 220L is formed by the first elongated piece 220
  • the fluid lumen 230L is formed by the second elongated piece 230
  • the insertion lumen 220L and the fluid lumen are provided.
  • 230L can be formed easily.
  • first long piece 220 has a linear shape extending in the axial direction, and the second long piece 230 is wound around the axis of the first long piece 220 in a spiral manner. Therefore, the spiral portion 231 can be easily formed.
  • the rigidity of the first long piece 220 is relatively high because the rigidity of the first long piece 220 is larger than the rigidity of the portion where the spiral portion 231 is formed in the second long piece 230.
  • the kink resistance of the medical device 2 can be improved.
  • the spiral portion 231 is formed by winding the spiral portion 231 having relatively low rigidity around the outer periphery of the first long piece having relatively high rigidity, the spiral portion 231 can be easily formed.
  • the first long piece 220 has a linear shape, it is easy to insert a medical device or the like into the insertion lumen 220L, and the operability of the medical device is improved.
  • FIG. 7 is a perspective view showing a medical instrument 3 according to the third embodiment of the present invention.
  • the medical device 3 includes an insertion lumen 320 ⁇ / b> L through which a medical device (not shown) having a long main body portion can be inserted, and a second that extends in a spiral shape.
  • An elongate member 310 having a discharge portion 332 for discharging F;
  • the elongate member 310 includes a first elongate piece 320 having a lumen that forms an insertion lumen 320L, and a second elongate piece 330 having a lumen that forms a fluid lumen 330L.
  • the first long piece 320 forms an insertion lumen 320L therein.
  • the first long piece 320 includes a first spiral portion 321 that is formed only in a predetermined range on the distal end side of the long member 310.
  • the first spiral portion 321 is formed by arranging the first long piece 320 and the second long piece 330 to be spirally wound in the axial direction.
  • the second elongated piece 330 forms a fluid lumen 330L inside.
  • the second long piece 330 has a second spiral portion 331 that is formed only in a predetermined range on the distal end side of the long member 310.
  • the second spiral portion 331 is provided to improve the kink resistance of the medical device 3.
  • the second spiral portion 331 is formed by arranging the first elongate piece 320 and the second elongate piece 330 to be spirally wound in the axial direction.
  • the outer side of the medical device 3 including the first spiral portion 321 and the second spiral portion 331 may be separately covered with a sheath or the like.
  • the surgeon transfers the fluid F from the fluid storage part A in which the fluid F is stored into the fluid lumen 330L via a known tube T in which the fluid storage part A and the fluid lumen 330L are connected in a liquid-tight and air-tight manner.
  • Supply The fluid F supplied into the fluid lumen 330L moves from the proximal end side to the distal end side, and from the discharge portion 332 provided on the distal end side, the first discharge portion 332A, the second discharge portion 332B, and the third discharge portion 332C.
  • the fourth discharge unit 332D, the fifth discharge unit 332E, and the sixth discharge unit 332F are discharged in this order.
  • the first elongate piece 320 and the second elongate piece 330 are arranged so as to be spirally wound in the axial direction.
  • the rigidity of the entire 3 can be increased, and the kink resistance of the medical device 3 can be further improved.
  • FIG. 9 is a side sectional view showing the medical device 4 according to (Modification 1).
  • the discharge part is omitted for easy understanding.
  • the medical device 4 according to (Modification 1) is fixed to the outer periphery of the long member 410 and pressurized from the proximal end side with respect to the medical device 1 of the first embodiment of the present invention. It further has a balloon 450 that can be expanded and contracted by injection and discharge of the medium P, and a balloon lumen 460 that supplies the pressurized medium P to the inside 450S of the balloon B.
  • FIG. 10 is a side view showing the medical device 5 according to (Modification 2).
  • the discharge part is omitted for easy understanding.
  • the medical device 5 according to (Modification 2) is injected and discharged with a pressurized medium on the distal end side in the insertion lumen 520 with respect to the medical device 1 of the first embodiment of the present invention.
  • the balloon catheter K provided with the balloon B that can be expanded and contracted is inserted, and a through-hole 510A for inserting the balloon catheter K is provided on the proximal end side of the long member 510.
  • the six discharge portions 32, 232, and 332 are provided at equal intervals around and in the axial direction of the long member 10.
  • at least two discharge units 32, 232, and 332 may be provided at equal intervals around and in the axial direction of the long member 10. Further, the intervals provided may not be equal.
  • the spiral portions (second spiral portions) 31, 231, and 331 of the fluid lumens 30, 230 L, and 330 L are provided for only one turn in the circumferential direction.
  • a plurality of rounds may be provided.
  • kink resistance can be further improved.
  • the periods of the spiral portions (second spiral portions) 31, 231, 331 are respectively The spiral portions (second spiral portions) 31, 231 and 331 may be different.
  • the rigidity can be adjusted at positions where the spiral portions (second spiral portions) 31, 231, and 331 are formed. Furthermore, a plurality of discharge portions 32, 232, 332 may be provided along the spiral portions (second spiral portions) 31, 231, 331 of the fluid lumens 30, 230 L, 330 L. According to this configuration, more fluid F can be supplied.
  • a medical instrument having an elongated main body is inserted through the insertion lumens 20, 220L, and 320L.
  • a fluid that is a fluid F or a medicine may be circulated through the insertion lumens 20, 220L, and 320L.
  • a small camera, forceps, a laser treatment device, or the like may be introduced into the insertion lumens 20, 220L, and 320L.
  • the fluid lumens 30, 230L, 330L are reactive fluids that are used to remove the tissue including the lesion mucosa in response to the laser. It is preferable to circulate cooling water or the like used for suppressing heat generated by treatment.

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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

La présente invention a pour but de proposer un instrument médical qui a une résistance au pliage accrue et peut décharger uniformément un fluide dans la direction périphérique dans un corps vivant. A cet effet, l'invention concerne un instrument médical (1), qui a un élément allongé comportant : une lumière de filetage (20), dans laquelle peut être fileté un instrument médical comprenant un corps principal allongé ; une lumière de fluide (30), sur laquelle est formée une section hélicoïdale (31) s'étendant de manière hélicoïdale et à travers laquelle peut s'écouler un fluide (F) ; et une section de décharge (32) qui décharge le fluide (F) s'écoulant à travers la lumière de fluide (30), et dont au moins deux sont situées dans des positions différentes le long de la direction axiale de la section hélicoïdale (31) de la lumière de fluide (30).
PCT/JP2013/074569 2012-09-28 2013-09-11 Instrument médical WO2014050570A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012215396A JP2015231396A (ja) 2012-09-28 2012-09-28 医療器具
JP2012-215396 2012-09-28

Publications (2)

Publication Number Publication Date
WO2014050570A1 true WO2014050570A1 (fr) 2014-04-03
WO2014050570A8 WO2014050570A8 (fr) 2015-03-26

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PCT/JP2013/074569 WO2014050570A1 (fr) 2012-09-28 2013-09-11 Instrument médical

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JPH01502484A (ja) * 1986-11-11 1989-08-31 ファーマシア　アクチェボラーグ 腸の吸引、潅流及び誘発のための方法とカテーテル、並びに腸の疾病／アレルギーの診断におけるその利用法
JPH0558154U (ja) * 1992-01-22 1993-08-03 クリエートメディック株式会社 小腸減圧用バルーンカテーテル
JPH10295820A (ja) * 1997-04-15 1998-11-10 Schneider Europ Ag カテーテル

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01502484A (ja) * 1986-11-11 1989-08-31 ファーマシア　アクチェボラーグ 腸の吸引、潅流及び誘発のための方法とカテーテル、並びに腸の疾病／アレルギーの診断におけるその利用法
JPH0558154U (ja) * 1992-01-22 1993-08-03 クリエートメディック株式会社 小腸減圧用バルーンカテーテル
JPH10295820A (ja) * 1997-04-15 1998-11-10 Schneider Europ Ag カテーテル

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