WO2015037766A1 - 자기 확장 스텐트의 이송장치 - Google Patents
자기 확장 스텐트의 이송장치 Download PDFInfo
- Publication number
- WO2015037766A1 WO2015037766A1 PCT/KR2013/008367 KR2013008367W WO2015037766A1 WO 2015037766 A1 WO2015037766 A1 WO 2015037766A1 KR 2013008367 W KR2013008367 W KR 2013008367W WO 2015037766 A1 WO2015037766 A1 WO 2015037766A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stent
- elastic coating
- end marker
- microcatheter
- transfer device
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/844—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents folded prior to deployment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/9522—Means for mounting a stent or stent-graft onto or into a placement instrument
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
- A61F2002/9665—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod with additional retaining means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
- A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers
Definitions
- the present invention relates to a stent transfer device, and more particularly, to a transfer device of a self-expanding stent that is easy to deploy and recapture the stent.
- vascular disease is a term used to refer to a disorder of blood vessels.
- Sudden cerebrovascular disorder is a disease causing local neurological disorders such as loss of consciousness, paraplegia, and speech impairment and, in severe cases, death. .
- Cerebrovascular diseases include hemorrhagic diseases such as ischemic diseases such as cerebral infarction caused by blood circulation disorder due to narrowing of blood vessels in narrowed cerebral arteries, and subarachnoid hemorrhage caused by cerebral aneurysm in which some of the blood vessels swell. have.
- balloon plastic surgery such as a balloon catheter
- the balloon is fixed to the diseased portion to expand the balloon to expand the vascular disease portion.
- This method had problems such as causing pain or recurrence of patients due to major surgery.
- cerebrovascular disease has a greater risk of treatment when treated by surgical surgery than other organs due to physiological characteristics, a minimally invasive treatment method is required instead of direct surgery.
- a stent formed of a metal mesh is inserted into the stenosis to widen the original vessel size or prevent the embolism and blood flow from flowing into the cerebral aneurysm, thereby preventing the treatment of blood vessels and the flow of normal blood flow.
- a method using a stent to hold is used.
- stents are used to prevent flow of blood or body fluids and to be inserted into the blocked area according to interventional procedures to normalize the flow or to block additional embolism and blood flow into the cerebral aneurysm if there is a disturbance in the flow of blood or body fluids.
- Stent intervention a minimally invasive procedure using stents, involves accessing the affected area by inserting a small catheter (catheter) or a thin wire (guide wire) through the blood vessel under X-ray vision, and securing a passage through a metal coil, etc. It is a treatment that normalizes the flow of blood or prevents the inflow of embolism and blood flow by blocking the neck that becomes the inlet of cerebral aneurysm.
- the use of a stent to prevent the bleeding disease is discharged to the position where the blood vessels can swell, there is also a treatment to prevent the blood vessels to expand further.
- US 6,019,778 relates to a delivery apparatus for a self expanding stent, comprising a shaft as an inner tube and a sheath as an outer tube. At the distal end of the shaft, a distal tip is mounted and a stent is provided adjacent to the distal tip. The stent is interposed between the distal tip and the proximal stop and is transferred to the desired position with the epidermis and then discharged to the desired position as the epidermis moves.
- the near end stop of the shaft supports the stent back end to the desired position, but in some cases the back end of the stent may be damaged by the stop, and the stent back end may not be unfolded after the membrane stent is discharged.
- the stent should be accurately positioned at the intended position. Even if it is confirmed that the stent is not in the correct position in the process of moving the epidermis, recapturing to move the stent into the epidermis may be impossible.
- the present invention provides a stent transfer device capable of transferring a self-expanding stent to a desired position without being damaged.
- the present invention can recover the stent into the epidermal loader again during the process of discharging the self-expanding stent, and provides a stent transfer device having a wide range of recoverable.
- the transfer device for transferring the self expanding stent to the desired position along the inside of the microcatheter, the microcatheter and A shaft section including a distal marker and a proximal marker for communicating with the outer tube and the outer tube via the microcatheter while moving back and forth in the outer tube and specifying the position of the stent at the desired position.
- an elastic coating formed on the outer surface of the shaft portion between the far end marker and the near end marker.
- the elastic coating is in surface contact with the inner surface of the stent in the outer tube and the microcatheter, and under the condition that the surface contact between the elastic coating and the stent is maintained, even if the stent is partially discharged to the outside of the microcatheter, the stent can be adjusted again. .
- the stent is not supported by the near-end stop or the like, but may be mainly supported in surface contact with the elastic coating. Therefore, the end of the stent can be prevented from being damaged by the near-end marker or the near-end stop, and the stent is not pushed between the far-end marker and the near-end marker from the original fixed position to the desired position, that is, the lesion site.
- the stent position is different from the original intended position in the process of deploying the stent, it was difficult to recover the stent back into the microcatheter in the conventional transport device.
- the elastic coating maintains the state in close contact with the inner surface of the stent, the partially discharged stent can be recovered into the microcatheter at the same time as the microcatheter is returned to its original position. Once the stent is recovered, the position of the microcatheter can be precisely moved to precisely adjust to the desired position, and the stent can be accurately discharged from the adjusted position.
- the elastic coating may be provided with an elastic material such as silicone, urethane, rubber, and the like, and a notch having a directivity may be formed in the elastic coating to facilitate recovery of the stent.
- the notch may be formed in a straight or curved shape according to the required conditions and design specifications, and may be formed in all or some sections of the elastic coating. In some cases, the notch may be formed to have a specific orientation.
- the notch part may include a state in which the notch part is disposed to be inclined at a predetermined angle.
- the shaft portion may be provided in the form of a guide wire or a separate hollow flexible tube, and the elastic coating may be formed entirely or partially between the far end marker and the near end marker, and continuously between the far end marker and the near end marker. Can be formed or discontinuously.
- the transfer device may be provided integrally with the wi connector.
- the transfer device may further include a holder connected to the luer lock of the microcatheter formed on the distal end of the outer tube and the wire connector sealed with the outer tube, and the proximal end of the outer tube Located in the cross area of the connector, when the saline or the like is injected through a syringe or the like may allow the saline solution to flow directly into the microcatheter through the outer tube.
- the stent transfer device of the present invention can transfer the self-expanding stent to the desired position without being damaged. That is, since the stent is supported while in contact with the elastic coating in the microcatheter, it is possible to prevent the end of the stent from being damaged by the near end marker or the near end stop, and the stent is not pushed between the far end marker and the near end marker. It can move from a fixed position to the desired position, ie the lesion site.
- the stent transfer device of the present invention can recover the stent into the epidermal loader again during the process of discharging the self-expanding stent, the range of the recovery can be wide. Specifically, when the stent position is different from the originally intended position in the process of deploying the stent, the stent may be recovered back into the microcatheter. Once the stent is recovered, the position of the microcatheter can be precisely moved to precisely adjust to the desired position, and the stent can be accurately discharged from the adjusted position.
- FIG. 1 is a perspective view of a transfer device of the magnetic expansion stent according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective view of the transfer apparatus of FIG.
- FIG. 3 is a cross-sectional view of the transfer device of FIG.
- FIG. 4 is a view for explaining the microcatheter distal end portion in the intended position according to the transfer device of FIG.
- FIG. 5 is a view for explaining a process of discharging the stent in the transfer device of FIG.
- FIG. 6 is a view for explaining a process of recovering the partially exposed stent in the transfer device of FIG.
- FIG. 7 is a perspective view for explaining a transfer device of the magnetic expansion stent according to another embodiment of the present invention.
- FIG. 8 is a view for explaining the elastic coating of the transfer apparatus according to another embodiment of the present invention.
- FIG. 9 is a view for explaining a modification of the elastic coating of the transfer apparatus according to another embodiment of the present invention.
- FIG. 10 is a view for explaining the elastic coating of the transfer apparatus according to another embodiment of the present invention.
- FIG. 11 is a view for explaining a transfer device according to another embodiment of the present invention.
- FIG. 1 is a perspective view of a transfer device of the self-expanding stent according to an embodiment of the present invention
- Figure 2 is an exploded perspective view of the transfer device of Figure 1
- Figure 3 is a cross-sectional view of the transfer device of FIG.
- the transfer device 100 for the self-expanding stent 10 includes an outer tube 110, a shaft part 120, and an elastic coating 130, and is inserted into the body through the skin. May be connected to the microcatheter 50.
- the microcatheter 50 may already be inserted into a desired position, that is, the lesion site, and in some cases, may move together with the shaft unit 120.
- the outer tube 110 may be formed to have an inner diameter of about 0.60 to 0.75 mm, and may be provided to communicate with the microcatheter 50. Inside the outer tube 110, the shaft portion 120 and the stent 10 may be mounted in advance.
- the stent 10 forms a substantially cylindrical stretchable structure by interconnecting or twisting fine wires.
- the stent 10 may be provided with a zigzag net shape like other stents. It may be (see US Pat. No. 6,019,778) and may be provided in other shapes.
- the outer tube 110 may be provided to match the dimensions of the microcatheter 50.
- the shaft portion 120 may be moved to the desired position via the microcatheter 50 while being in the outer tube 110 together with the stent 10.
- the shaft portion 120 may be provided with a material harmless to the human body, or may be provided as a metal such as stainless steel or an artificial material harmless to the human body such as polyamide or polyurethane.
- Shaft portion 120 may be provided in a diameter or thickness of about 0.10 ⁇ 0.20mm.
- the shaft portion 120 includes a distal marker 122 and a near-end marker 124 to specify the position of the stent 10 at the desired position. Then, between the far end marker 122 and the near end marker 124 is provided to the elastic coating 130 surrounding the outer surface of the shaft portion 120.
- the elastic coating 130 may be formed using an elastic material such as silicone, urethane, rubber, etc., the elastic coating 130 forms a surface contact with the inner surface of the stent 10, the microcatheter 50 and the outer tube In the interior of the 110, the stent 10 may be transferred to the friction force to move smoothly.
- the elastic coating 130 having a thickness of about 0.20 to 0.25 mm is stent.
- the friction surface may be formed while making surface contact with the inner surface of the 10, and the stent 10 may be brought into full contact with the stent 10 to move the portion without any partial damage.
- the shaft part 120 and the elastic coating 130 may be provided to a thickness of about 0.58 mm.
- the stent 10 may be made of a fine wire of about 0.03 mm, and may have a thickness of about 0.06 mm at most. Therefore, the total thickness of the shaft portion 120, the elastic coating 130 and the stent 10 may be about 0.70 mm, which may be inserted into the outer tube 110 having an inner diameter of about 0.69 mm.
- the overall thickness is formed to have the same error as the inner diameter of the outer tube 110 or about 0.01mm. Can be.
- the far end marker 122 itself or adjacent coil guide portion may be provided.
- the distal marker 122 and the near-end marker 124 may be provided in a material or shape capable of measuring the position of the stent 10 in the body blood vessel by X-ray image or other measurement.
- FIG. 4 is a view for explaining the microcatheter distal end portion in the intended position according to the transfer device of Figure 1
- Figure 5 is a view for explaining the process of discharging the stent in the transfer device of FIG.
- the shaft part 120 and the stent 10 may move along the microcatheter 50.
- the location of the stent 10 may be specified by the far-end marker 122 and the near-end marker 124, and the stent 10 may be discharged at a location where there is a risk of swelling or swelling in the blood vessel.
- the microcatheter 50 may be relatively retracted (a). Since the stent 10 is relatively fixed to the elastic coating 130 with a large frictional force, only the microcatheter 50 can be retracted, and the stationary shaft portion 120 and the stent 10 have a micro position in a fixed position. May be exposed out of catheter 50.
- the expanded stent 10 may form a space by the stent 10 while being in close contact with the inner wall of the blood vessel. It extends from the front end of the stent 10 to be exposed, and the range of the stent 10 to be exposed and expanded as the microcatheter 50 retreats gradually becomes longer (b).
- the stent 10 When the stent 10 is completely discharged from the microcatheter 50, the stent 10 forms a cylindrical space on the inner wall of the blood vessel, and can prevent the blood vessel from swelling continuously by the pressure of the blood.
- the stent 10 even when the blood vessel is narrowed by a thrombus or the like may be used as a means for expanding the blood vessel using the same or different stents.
- FIG. 6 is a view for explaining a process of recovering the partially exposed stent in the transfer device of FIG.
- the diameter of the stent 10 is extended and the length thereof is shortened, so that it may be difficult to discharge at a desired position.
- the stent 10 may be frequently discharged at a position I 1 other than the intended position I 0 (d).
- the microcatheter 50 may be advanced again to insert the stent 10 into the microcatheter 50 again.
- a part of the stent 10 which is not discharged from the microcatheter 50 is kept in close contact with the elastic coating 130 and can maintain effective frictional force. Therefore, when the microcatheter 50 advances again for recovery, friction between the elastic coating 130 and the rear end of the stent 10 is maintained, and the stent 10 is not pushed or detached from the microcatheter 50. (E) can be recovered again without
- the partially expanded stent will not be recovered, and even if the microcatheter is advanced, the stent is not recovered and the stent is pushed out and is likely to be discharged from the wrong position.
- the distal marker and the near-end marker can be used to move the stent 10 to the desired position (I 0 ), Figure 5 and Likewise, the stent 10 can be discharged at the correct position.
- FIG. 7 is a perspective view for explaining a transfer device of the magnetic expansion stent according to another embodiment of the present invention.
- the transfer device for the stent is a luer of the microcatheter 50 mounted on the fabric of the outer connector 210, the outer tube 210, and the outer tube 210 mounted at the front of the wire connector 240.
- the holder 260 is fixed to the lock 55, the shaft portion 220 to move to the lesion site through the microcatheter 50, and the elastic coating 230 to maintain and keep in close contact with the stent.
- the proximal end of the outer tube 210 is located in the cross space 242 of the wi connector 240.
- the wire connector 240 is integrally provided with the outer tube 210 and the shaft portion 220, and the wire connector 240 is separately fixed to the luer lock 55, and the outer tube 210 is separately provided. It is possible to complete the transfer preparation of the stent with the connection of the wire connector 240 without the need to fix.
- FIG 8 is a view for explaining an elastic coating of the transfer apparatus according to another embodiment of the present invention
- Figure 9 is a view for explaining a modification of the elastic coating of the transfer apparatus according to another embodiment of the present invention.
- the far end marker 322 and the near end marker 324 may be provided at the end of the shaft 320, and a long bullet guide may be provided adjacent to the far end marker 322.
- An elastic coating 330 may be provided between the far end marker 322 and the near end marker 324, and a plurality of notch portions 332 may be formed on the surface of the elastic coating 330.
- the notch 332 may assist in stably recovering the stent, and even if the stent has been discharged by a significant length, the minimum engaged length that can be recovered is kept short as long as the contact between the stent and the elastic coating 330 is maintained. To be able.
- the notch 332 may be provided in various forms according to required conditions and design specifications.
- the notch 332 may be formed in a straight line shape having a fine width to form an approximately sheath shape, and may have a direction toward the near end marker 324, that is, toward the rear. Can be.
- the notch portion may be formed in other shapes, and the width of the notch portion may be appropriately changed according to required conditions and design specifications.
- the notch part 1332 may be formed in a straight line shape and disposed along the radial direction of the shaft part 320.
- the notch part 2332 may be formed to be bent to form an approximately “S” pattern.
- the notch part 2332 may be formed in the entire section or a part of the elastic coating, and the present invention is not limited or limited by the section in which the notch part 2332 is formed.
- the notch 3333 may have a predetermined width or more.
- the surface of the elastic coating may be provided in an uneven form such as a wave pattern.
- the width of the notches and the spacing between the notches may be appropriately changed according to the required conditions and design specifications.
- FIG. 10 is a view for explaining the elastic coating of the transfer apparatus according to another embodiment of the present invention.
- an elastic coating 430 and 435 may be partially formed between the far-end marker 122 and the near-end marker 124 in the shaft part 120, and the elastic coating 430 and 435. ) Can be formed discretely, ie discontinuously.
- the elastic coatings 430 and 435 may be provided in various patterns that may be formed discontinuously.
- the elastic coating may be provided in two or three or more separated states in the longitudinal direction, and the elastic coating may be separated along the circumferential direction rather than in the longitudinal direction.
- FIG. 11 is a view for explaining a transfer device according to another embodiment of the present invention.
- the same or equivalent reference numerals are given to the same or equivalent components as those described above, and detailed description thereof will be omitted.
- the transfer apparatus may include at least one intermediate marker 126 formed between the far-end marker 122 and the near-end marker 124.
- the intermediate marker 126 is a material or shape capable of measuring the position of the stent 10 in the body blood vessel by X-ray image or other measurement in the same or similar manner as the above-described marker 122 and the near-end marker 124. It may be provided as.
- the intermediate marker 126 may be provided at various sites according to required conditions and design specifications, and the number and spacing intervals of the intermediate markers 126 may be appropriately changed according to required conditions.
- the plurality of elastic coatings 430 and 435 may be discontinuously formed along the length direction between the far-end marker 122 and the near-end marker 124, and the intermediate marker 126 may be the elastic coating 435.
- the first intermediate marker 126a may be formed on the formed region, and the second intermediate marker 126b may be formed between the elastic coatings 430 and 435 spaced apart from each other.
- the first intermediate marker 126a is formed on the region where the elastic coating 435 is formed.
- the first intermediate marker 126a is the elastic coating 435 on the region where the elastic coating 435 is formed. It may be understood to include all of the structures formed on the surface of or formed inside the elastic coating 435.
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- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
Description
Claims (13)
- 마이크로카테터의 내부를 따라 자기 확장 스텐트를 목적된 위치로 이송하는 이송장치에 있어서,상기 마이크로카테터와 연통되는 외부튜브;상기 외부튜브에서 전후 이동하면서 상기 마이크로카테터를 경유하며, 상기 목적된 위치에서 상기 스텐트의 위치를 특정하기 위한 원단마커 및 근단마커를 포함하는 샤프트부; 및상기 원단마커 및 상기 근단마커 사이에서 상기 샤프트부의 외면에 형성되는 탄성 코팅;을 포함하고,상기 탄성 코팅은 상기 외부튜브 및 상기 마이크로카테터 내부에서 상기 스텐트의 내면과 면접촉을 하며, 상기 탄성 코팅과 상기 스텐트 간의 면접촉이 유지되는 조건 하에서 상기 스텐트가 상기 마이크로카테터 외부로 노출되어도 다시 회수가 가능한 것을 특징으로 하는 자기 확장 스텐트의 이송장치.
- 제1항에 있어서,상기 탄성 코팅은 실리콘, 우레탄, 고무 중 적어도 어느 하나를 포함하는 탄성 재질로 제공되는 것을 특징으로 하는 자기 확장 스텐트의 이송장치.
- 제1항에 있어서,상기 탄성 코팅의 표면에는 노치부(notch portion)가 형성된 것을 특징으로 하는 자기 확장 스텐트의 이송장치.
- 제3항에 있어서,상기 노치부는 직선 또는 굴곡된 형태로 형성된 것을 특징으로 하는 자기 확장 스텐트의 이송장치.
- 제3항에 있어서,상기 노치부는 상기 탄성 코팅의 전구간 또는 일부 구간에 형성된 것을 특징으로 하는 스텐트 이송장치.
- 제3항에 있어서,상기 노치부는 상기 샤프트부의 상기 근단마커를 향하도록 방향성을 갖는 것을 특징으로 하는 자기 확장 스텐트의 이송장치.
- 제1항에 있어서,상기 샤프트부는 가이드 와이어인 것을 특징으로 하는 자기 확장 스텐트의 이송장치.
- 제1항에 있어서,상기 탄성 코팅은 상기 원단마커 및 상기 근단마커 사이에서 전면적으로 또는 부분적으로 형성된 특징으로 하는 자기 확장 스텐트의 이송장치.
- 제1항에 있어서,상기 탄성 코팅은 상기 원단마커 및 상기 근단마커 사이에서 연속적으로 또는 불연속적으로 형성된 것을 특징으로 하는 자기 확장 스텐트의 이송장치.
- 제1항에 있어서,상기 외부튜브와 밀봉되는 와이커넥터 및 상기 외부튜브의 원단에 형성되어 상기 마이크로카테터의 루어락과 고정되는 홀더를 더 포함하며,상기 외부튜브의 근단은 상기 와이커넥터의 교차공간에 위치하는 것을 특징으로 하는 자기 확장 스텐트의 이송장치.
- 제1항에 있어서,상기 원단마커 및 상기 근단마커 사이에서 형성되는 중간마커를 더 포함하는 것을 특징으로 하는 자기 확장 스텐트의 이송장치.
- 제11항에 있어서,상기 중간마커는 상기 탄성 코팅이 형성된 영역 상에 형성된 것을 특징으로 하는 자기 확장 스텐트의 이송장치.
- 제11항에 있어서,상기 탄성 코팅은 상기 원단마커 및 상기 근단마커 사이에서 길이 방향을 따라 불연속적으로 복수개가 형성되며,상기 중간마커는 서로 이격된 상기 탄성 코팅의 사이에 형성된 것을 특징으로 하는 자기 확장 스텐트의 이송장치.
Priority Applications (4)
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CN201380079618.5A CN105578999A (zh) | 2013-09-16 | 2013-09-16 | 自扩张支架的移送装置 |
PCT/KR2013/008367 WO2015037766A1 (ko) | 2013-09-16 | 2013-09-16 | 자기 확장 스텐트의 이송장치 |
EP13893562.2A EP3047819A4 (en) | 2013-09-16 | 2013-09-16 | Self-expanding stent transfer device |
US15/022,305 US20160220402A1 (en) | 2013-09-16 | 2013-09-16 | Self-expanding stent transfer device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/KR2013/008367 WO2015037766A1 (ko) | 2013-09-16 | 2013-09-16 | 자기 확장 스텐트의 이송장치 |
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WO2015037766A1 true WO2015037766A1 (ko) | 2015-03-19 |
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PCT/KR2013/008367 WO2015037766A1 (ko) | 2013-09-16 | 2013-09-16 | 자기 확장 스텐트의 이송장치 |
Country Status (4)
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US (1) | US20160220402A1 (ko) |
EP (1) | EP3047819A4 (ko) |
CN (1) | CN105578999A (ko) |
WO (1) | WO2015037766A1 (ko) |
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US11826270B2 (en) * | 2020-10-29 | 2023-11-28 | Clearstream Technologies Limited | Connector for transfer of an implant to a catheter |
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US6019778A (en) | 1998-03-13 | 2000-02-01 | Cordis Corporation | Delivery apparatus for a self-expanding stent |
US6942681B2 (en) * | 2001-02-16 | 2005-09-13 | Cordis Corporation | Method of balloon catheter stent delivery system with ridges |
JP4284002B2 (ja) * | 1999-05-20 | 2009-06-24 | ボストン サイエンティフィック リミテッド | 捻れを防止するステント送達システム、およびそれを装填する方法 |
US20090177264A1 (en) * | 1995-09-12 | 2009-07-09 | Ravenscroft Adrian C | Stent Delivery System |
KR20120089056A (ko) * | 2011-02-01 | 2012-08-09 | 주식회사 라파스 | 마이크로 구조체가 형성된 스텐트 와이어를 구비한 스텐트 전달장치 |
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US8728143B2 (en) * | 1996-06-06 | 2014-05-20 | Biosensors International Group, Ltd. | Endoprosthesis deployment system for treating vascular bifurcations |
JP4299973B2 (ja) * | 1999-05-20 | 2009-07-22 | ボストン サイエンティフィック リミテッド | 収縮安定器を備えるステント送達システム |
AU2005280151A1 (en) * | 2004-08-26 | 2006-03-09 | Cook Incorporated | Delivery system with controlled frictional properties |
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2013
- 2013-09-16 CN CN201380079618.5A patent/CN105578999A/zh active Pending
- 2013-09-16 EP EP13893562.2A patent/EP3047819A4/en not_active Withdrawn
- 2013-09-16 WO PCT/KR2013/008367 patent/WO2015037766A1/ko active Application Filing
- 2013-09-16 US US15/022,305 patent/US20160220402A1/en not_active Abandoned
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US20090177264A1 (en) * | 1995-09-12 | 2009-07-09 | Ravenscroft Adrian C | Stent Delivery System |
US6019778A (en) | 1998-03-13 | 2000-02-01 | Cordis Corporation | Delivery apparatus for a self-expanding stent |
JP4284002B2 (ja) * | 1999-05-20 | 2009-06-24 | ボストン サイエンティフィック リミテッド | 捻れを防止するステント送達システム、およびそれを装填する方法 |
US6942681B2 (en) * | 2001-02-16 | 2005-09-13 | Cordis Corporation | Method of balloon catheter stent delivery system with ridges |
KR20120089056A (ko) * | 2011-02-01 | 2012-08-09 | 주식회사 라파스 | 마이크로 구조체가 형성된 스텐트 와이어를 구비한 스텐트 전달장치 |
Non-Patent Citations (1)
Title |
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See also references of EP3047819A4 * |
Also Published As
Publication number | Publication date |
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EP3047819A1 (en) | 2016-07-27 |
CN105578999A (zh) | 2016-05-11 |
EP3047819A4 (en) | 2017-04-12 |
US20160220402A1 (en) | 2016-08-04 |
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