WO2006033309A1 - 処置手段導入部材及びステントデリバリーカテーテル並びに管路系 - Google Patents
処置手段導入部材及びステントデリバリーカテーテル並びに管路系 Download PDFInfo
- Publication number
- WO2006033309A1 WO2006033309A1 PCT/JP2005/017196 JP2005017196W WO2006033309A1 WO 2006033309 A1 WO2006033309 A1 WO 2006033309A1 JP 2005017196 W JP2005017196 W JP 2005017196W WO 2006033309 A1 WO2006033309 A1 WO 2006033309A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stent
- treatment means
- conduit
- introduction member
- flap
- 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.)
- Ceased
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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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/94—Stents retaining their form, i.e. not being deformable, after placement in the predetermined place
-
- 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
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
- A61B1/018—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor for receiving instruments
-
- 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
- A61F2/0095—Packages or dispensers for prostheses or other implants
-
- 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
- A61F2/9517—Instruments specially adapted for placement or removal of stents or stent-grafts handle assemblies therefor
-
- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2002/041—Bile ducts
-
- 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
- A61M25/002—Packages specially adapted therefor ; catheter kit packages
Definitions
- Treatment means introduction member, stent delivery catheter and conduit system
- the present invention relates to a treatment means introduction member, a stent delivery catheter including the treatment means introduction member, and a conduit system.
- the long guide member When inserting the stent, the long guide member is covered with the stent, the guide member is passed through the endoscope duct, and the guide member is inserted inside the endoscope bile duct or the like. After that, the stent is pushed out.
- the stent is provided with a flap, and the opening of the flap prevents the stenotic part from falling off.
- a stent introduction member for guiding the stent to an endoscope channel.
- the stent introduction member has an inner diameter that is substantially equal to the opening diameter of the fistula entrance of the duct, and when the stent introduction member abuts on the peripheral edge of the fistula entrance, the stent fed into the stent introduction member is guided to the duct. Become! /
- the flap on the rear end side of the stent is formed so as to open toward the front end. Therefore, when the stent is inserted, the flap entrance on the duct and the flap on the rear end side interfere with each other. Therefore, the flap on the rear end side may be bent. For this reason, there is one in which the distal end of the stent introduction member can be inserted into the insertion port (for example, see Patent Document 1).
- the stent introduction member has a length that can completely cover the flap on the rear end side, and the flap on the rear end side is inserted into the insertion port while being covered with the stent introduction member.
- Patent Document 1 Japanese Patent Laid-Open No. 11-76412
- the endoscope conduit is branched to perform air supply and the like, and the diameter of the conduit increases at this branched portion. Therefore, when the stent passes through this branched portion, In some cases, the flaps opened at the expanded diameter. When the flap is opened at the bifurcation, the inner diameter is relatively small! / And the flap may be bent when entering the pipe. In other words, even if the flap is protected when it is inserted into the insertion port, the flap may be bent or the like if there is a portion that expands in diameter in the subsequent pipe.
- the folded flap in this way has a problem that it is easy to pull on the elevator at the end of the endoscope, and it is difficult to push the stent against the endoscope force.
- the present invention has been made in view of such circumstances, and an object of the present invention is to ensure that it can be placed in the body with a stent.
- a second pipeline having a different inner diameter, a main pipeline having an inner diameter capable of penetrating the first treatment means and the second treatment means, the first pipeline, and the second pipeline A treatment means introduction member used when introducing the first treatment means from the first pipeline to a pipeline system including a connection portion connecting the main pipeline, A main body portion having an outer diameter that can be inserted into the first conduit, and at least a part of an opening that is on a distal end side of the main body portion and that communicates with the second conduit at the connection portion And a distal end portion having a closure member.
- a treatment means introduction member is provided.
- the distal end portion closes a part of the opening of the connection portion, so that the diameter of the conduit through which the first treatment means is inserted decreases.
- the main body portion has an outer diameter smaller than an inner diameter of the first conduit and the connection portion, and the first treatment means Than the outer diameter of A tubular member having a large inner diameter, wherein the distal end portion closes at least a part of the opening leading to the second conduit in the connecting portion, and is located on the operation portion side of the conduit system.
- One treatment means insertion locus is exposed to the outside of the pipeline system.
- the main body portion forms a pipe having a smaller diameter than that of the connecting portion, and the first treatment means is introduced through the pipe.
- the main body portion is provided with a restriction portion for restricting an insertion amount into the first pipe line on a proximal end side.
- the insertion amount is restricted by the restriction portion, so that the treatment means introduction member is inserted into a correct position.
- a first pipe having an inner diameter capable of penetrating the first treatment means
- a second pipe having an inner diameter capable of penetrating the second treatment means.
- a main passage having an inner diameter capable of passing through the passage, the first treatment means and the second treatment means, the first pipeline, the second pipeline, and the main pipeline.
- a stent delivery catheter used together with an endoscope including a connecting portion to be connected, wherein the first conduit and the main conduit from the first treatment means insertion port of the operation portion of the endoscope
- a guide member pierced through the guide member, a stent movably mounted on the guide member, a pressing member provided on the guide member so as to be movable forward and backward, and for extruding and placing the stent, and the pressing member
- the treatment means introduction member provided on the stent so as to freely advance and retract.
- the stent delivery catheter comprising a tent introduction member, is provided.
- the stent in this stent delivery catheter, the stent can be introduced in a state in which a part of the opening of the connection portion is closed with the stent introduction member, and the stent flap is not opened and bent when passing through the connection portion. .
- the stent in the above stent delivery catheter, includes a flap that restricts movement of the stent, and the stent delivery catheter holds the stent while being sheathed on the guide member. It further includes a protective case that covers the cover in the open state.
- an endoscope treatment system including the endoscope and a stent delivery catheter.
- a first conduit having an inner diameter capable of penetrating the first treatment means and a second pipe having an inner diameter capable of penetrating the second treatment means.
- a conduit system is provided.
- each of the front end portion and the rear end portion has a flap.
- the stent When introducing an insertion locus formed in a branch line branched by a main branching force branching part of an endoscope having an opening at the tip of a stent to be placed in the body, the stent can be inserted and its length Is longer than the distance from the opening to the branch portion of the main pipeline.
- the stent introduction member After positioning at least the flap on the rear end side of the stent in the stent introduction member, the stent introduction member from the insertion port of the branch pipeline A stent introducing member inserting step of leading the distal end portion of the stent introducing member from the branch conduit to the main conduit over the branched portion; and after the stent introducing member inserting step, the stent guide And a stent insertion step of passing at least the flap at the rear end portion through the branch portion through the insertion member.
- the stent introduction member insertion step is provided to narrow the apparent path when the stent passes through the branch portion of the duct and prevent the flap from being opened at the branch portion. As a result, unnecessary force does not act on the flap when the stent enters the branch force main conduit.
- FIG. 1 is a diagram showing an endoscopic treatment system including a stent delivery catheter according to an embodiment of the present invention.
- FIG. 2 is an enlarged cross-sectional view of a part of FIG. 1, showing a state in which a stent introduction member is inserted.
- FIG. 3 is a diagram showing a configuration of a stent delivery catheter.
- FIG. 4 is a diagram illustrating a method for using a stent delivery catheter.
- FIG. 5 is an enlarged cross-sectional view of a part of FIG. 1, showing a state in which the stent has entered the main duct.
- FIG. 6 is a view showing a state where a stent is inserted into a living body.
- FIG. 7 shows a stent
- FIG. 8 shows a stent delivery catheter and its protective case.
- FIG. 9 is a side view of the protective case.
- FIG. 10 is a view showing a stent introduction member.
- FIG. 11 is a diagram for explaining introduction of a stent.
- FIG. 12 is a view showing a state where the stent introduction member is inserted into the endoscope.
- FIG. 13 is a view showing a stent introduction member.
- FIG. 14 is a view showing a state where a stent introduction member is inserted into an endoscope.
- FIG. 15 is a view showing a stent introduction member.
- FIG. 16 is a view showing a state where a stent is inserted into an endoscope.
- FIG. 17 is a view taken along the line BB in FIG.
- Endoscope 3 Endoscope insertion part 5 Treatment instrument penetration channel (pipe line system) 7 Main pipe line 8 Branch part (connection part) 9 First pipe line 10 Second pipe line 12 Insert port 20 , 65 Stent delivery catheter (first treatment) 25 Guide catheter (guide member) 3 0, 60, 71 Stent 32, 33, 63, 64, 73, 74 Flap 35, 100, 110, 120 Stent introduction member 35a, 101 Body (shielding part) 70 Protective case 112 Shielding part 11 3 Marker 122 Marker (marking part) 121 Body (shielding part)
- FIG. 1 is a view in which the stent delivery catheter according to the first embodiment is inserted through an endoscope
- FIG. 2 is an enlarged cross-sectional view of a portion A in FIG.
- the endoscope 1 has an endoscope operation unit 2 that is operated by an operator, and an endoscope inserted into the body is provided at the distal end of the endoscope operation unit 2.
- a mirror insertion part 3 is provided.
- the endoscope insertion portion 3 is flexible and can be bent by the knob 4 of the endoscope operation portion 2.
- a treatment instrument penetration channel 5 that is a conduit system is formed. The distal end of the treatment instrument communicating channel 5 opens to the side surface of the distal end portion 6 of the endoscope insertion portion 3, passes through the endoscope insertion portion 3, and reaches the endoscope operation portion 2.
- the treatment instrument communication channel 5 is composed of a main pipe line 7 reaching the distal end of the endoscope insertion part 3 and a first pipe line 9, and branches from the second pipe line 10 at a branch part 8 which is a connecting part. is doing.
- the second conduit 10 extends along the axis of the main conduit 7 and is connected to a liquid supply conduit (not shown) or an air supply conduit so that physiological saline or the like can be supplied as a second treatment means.
- a liquid supply conduit not shown
- an air supply conduit so that physiological saline or the like can be supplied as a second treatment means.
- These liquid supply line and air supply line are connected to an external air supply apparatus and liquid supply apparatus through a universal cord 11 extending in the lateral force of the endoscope operation section 2 shown in FIG.
- the first pipeline 9 extends to the side entrance 12 of the side of the endoscope operation unit 2.
- a stent delivery catheter 20 is inserted into the heel entrance 12 as a first treatment means.
- the stent delivery catheter 20 has an operation portion 21 that is operated by an operator.
- the operation unit 21 includes a guide catheter base 22 and a pusher tube base 23 that is detachably attached to the guide catheter base 22.
- a pusher tube 24 is attached to the tip of the pusher tube cap 23.
- the pusher tube 24 is made of an elongated tubular member having flexibility.
- a guide catheter 25, which is a guide member, is inserted into the pusher tube 24 so as to freely advance and retract.
- the guide catheter 25 is made of a flexible member formed with a lumen, and a marker 26 for X-ray imaging is embedded at the tip thereof.
- the lumen passes through the pusher tube base 23 and communicates with a connection portion 27 provided at the proximal end of the guide catheter base 22.
- the connecting portion 27 is made of a luer lock or the like so that a syringe (not shown) can be connected thereto.
- the guide catheter 25 is longer than the pusher tube 24. When the guide catheter base 22 and the pusher tube base 23 are connected to each other, the tip of the guide force table 25 is connected to the pusher tube 24. The tip force of 24 is also exposed. The exposed distal end portion 25a is covered with a stent 30 so as to be able to advance and retreat.
- the stent 30 has a tubular stent body 31.
- the inner diameter of the stent body 31 is substantially equal to the outer diameter of the guide catheter 25.
- the outer diameter of the stent body 31 is smaller than any of the inner diameters of the main conduit 7, the branch portion 8, and the first conduit 9.
- a flap 32 is provided on the distal end side of the stent 30.
- Four flaps 32 are provided at positions shifted by about 90 degrees in the outer peripheral direction of the stent body 31, and are formed so as to open toward the rear end in a natural state. Further, it can be deformed so as to close when a predetermined external force is applied.
- Each flap 32 gradually decreases in width as the proximal force connected to the stent body 31 also moves toward the distal end.
- Four flaps 33 are provided on the rear end side of the stent 30. The flap 33 has the same configuration as the flap 32 except that the flap 33 is shaped to open at the tip in the natural state.
- the pusher tube 24 is covered with a stent introduction member 35 so as to be able to advance and retract.
- the stent introduction member 35 is composed of a tubular main body portion 35a, and the inner diameter thereof is larger than the outer diameter of the push tube 24. Further, the inner diameter of the stent introduction member 35 is larger than the outer diameter of the stent 30 with the flaps 32 and 33 closed.
- the outer diameter of the stent introduction member 35 is smaller than the diameter of the first duct 9 on the endoscope 1 side and the diameter of the branch portion 8.
- the length of the stent introduction member 35 is shorter than the push tube 24 longer than the entire length of the first conduit 9, and more preferably about 90 mm.
- Such a stent introduction member 35 is also made of, for example, a force such as fluorine resin (including PTFE, PFT, FEP, etc .; the same applies hereinafter) and polyethylene. This is because in order for the stent introduction member 35 to be inserted into the first conduit 9, it is thin and requires rigidity and slidability to enable insertion.
- the stent introduction member 35 may be configured such that at least its distal end portion 35b can be deformed.
- the structure that makes the distal end portion 35b deformable includes manufacturing the entire stent introducing member 35 or the distal end portion 35b with a flexible material force, manufacturing the distal end portion 35b thinner than other portions, or Length at tip 35b For example, a slit may be provided along the direction.
- the distal end portion 35b of such a stent introduction member 35 serves as a shielding portion that reduces the diameter of the region through which the stent 30 passes at the branching portion 8.
- FIG. 4 the case where the stent 30 is inserted from the duodenal papilla W2 of the patient's duodenum W1 into the bile duct W3 will be described as an example.
- a guide wire 50 is inserted into the bile duct W3.
- the guide wire 50 is inserted in advance from the duodenal papilla W2 using a contrast tube (not shown). Then, when the contrast tube is pulled out, the distal end portion of the guide wire 50 remains in the bile duct W3, while the proximal end portion of the guide wire 50 is pulled out of the body through the treatment instrument communication channel 5 of the endoscope 1. .
- the stent introduction member 35 is advanced to the distal end side of the guide catheter 25, and the flap 33 on the rear end side of the stent 30 is accommodated in the stent introduction member 35.
- the proximal end of the guide wire 50 is also inserted into the lumen of the distal end force of the guide catheter 25 and pulled out from the connection portion 27 of the guide catheter base 22 of the operation portion 21, and then the guide catheter 25 is endoscope 1 It is fed into the first pipe line 9 from the insertion port 12 of.
- the guide force tail 25 is sufficiently narrower than the inner diameters of the first pipe line 9 and the branch part 8, so that the guide force tail 25 is guided to the main pipe line 7 while being bent at the branch part 8, and fed toward the tip of the main pipe line 7. .
- the stent 30 and the stent introduction member 35 externally attached to the rear end portion of the stent 30 are also inserted into the first duct 9 (stent introduction member insertion step).
- the stent 30 is inserted into the first duct 9 in a state where the distal end side flap 32 is closed. Then, in the process from the first conduit 9 to the main conduit 7, it is bent at the branch portion 8 following the guide catheter 25. At this time, since the apparent pipe diameter increases at the branching portion 8, the flap 32 is temporarily opened and then closed again when entering the main pipe 7. Here, since the flaps 32 are provided so as to open toward the rear end, the flaps 32 are not shown in FIG. As shown in Fig. 3, the main line 7 is entered without being bent.
- the stent introduction member 35 guided to the branching portion 8 following the distal end portion of the stent 30 is bent at the branching portion 8 and enters the main duct 7.
- the stent introduction member 35 has an outer diameter close to the inner diameter of the first conduit 9 and has rigidity as a whole, the stent introduction member 35 is fitted in the first conduit 9 and the main conduit 7. Stop.
- this state force is also sent further into the treatment instrument penetration channel 5
- the stent introduction member 35 remains stopped, but the stent 30 is pushed forward by the pusher tube 24.
- the rear end force of the stent 30 and the front end force of the stent introduction member 35 are also sent out. Since the flap 33 is fed from the stent introduction member 35 after passing through the branch portion 8 in which the pipe diameter increases, even if the flap 33 is opened in the main pipe 7, the flap 33 is not bent.
- the raising base 51 of the distal end portion 6 is raised and the distal end of the guide catheter 25 is aligned with the duodenal papilla W2.
- the guide catheter 25 is further pushed in, and the distal end thereof is inserted into the bile duct W3 (stent insertion process).
- the guide catheter 25 When the marker 26 is inserted to a position beyond the stenosis W4, the guide catheter 25 is fixed, the guide catheter base 22 of the operation unit 21 and the pusher tube base 23 are separated, and the pusher tube 24 is connected to the guide catheter 24. Advance along 25. The pusher tube 24 is advanced, and the tip of the pusher tube 24 pushes the stent 30 toward the tip of the guide catheter 25. Thereby, as shown in FIG. 6, the distal end portion of the stent 30 is inserted into the bile duct W3 through the duodenal papilla W2 and placed at a position beyond the stenosis W4.
- the flap 32 is opened toward the rear end, the flap 32 is closed when passing through the duodenal papilla W2, but is opened beyond the narrowed portion W4 of the bile duct W3.
- the flap 33 is opened toward the tip in the duodenum W1.
- the stent 30 is disposed.
- the bile duct W3 and the duodenum W1 are communicated with each other through the through hole formed in the stent body 31. Movement in the direction of the force in the bile duct W3 is regulated by the flap 33, and movement in the direction of the force in the duodenum W1 is regulated by the flap 32. It is.
- the stent introduction member 35 is inserted into the conduit of the treatment instrument penetration channel 5 so that the distal end of the stent introduction member 35 extends over the branch portion 8 and reaches the main conduit 7. Therefore, the diameter of the space through which the stent 30 passes near the branch portion 8 can be reduced, and the flap 33 of the stent 30 can be prevented from being opened at the branch portion 8.
- the diameter of the duct decreases when the stent 30 enters the main duct 7 from the branch section 8.At this time, the flap that opens by force toward the tip is bent or broken. Such a problem does not occur in this embodiment. Therefore, the folded flap 33 is not pulled against the elevator 51 when the stent 30 is introduced.
- the flaps 32, 33 function normally, and the stent 30 does not easily fall off.
- the stent introduction member 35 is configured so that its distal end portion is deformed following the branch portion 8 and the main pipeline 7 while having rigidity sufficient to allow insertion into the first pipeline 9. Therefore, the flap 33 can be prevented from being deformed only by being inserted into the endoscope 1 until the stent introduction member 35 stops.
- the stent delivery catheter 20 has the stent 30 and the stent introduction member 35 pre-packaged on the guide catheter 25 and the pusher tube 24, the time and effort for attaching the stent 30 and the like during surgery can be omitted, and the procedure time can be shortened. it can.
- the stent used in the present embodiment may be the following.
- the stent 60 has a stent body 61 that is a tubular shielding part in which a through hole is formed.
- the outer periphery of the distal end portion 61a of the stent body 61 is tapered so that the diameter decreases toward the distal end.
- a side hole 62 communicating with the through hole of the stent body 61 is formed on the base end side of the chamfered portion.
- a flap 63 is provided on the base end side with respect to the side hole 62.
- the flap 63 is a part of the stent body 61 cut and raised from the proximal side to the distal side, and the width of the proximal force connected to the stent body 61 decreases toward the distal end. Can be deformed.
- a flap 64 is provided on the proximal end side of the stent body 61. The flap 64 is cut and raised so as to open toward the tip, and has the same configuration as the flap 63 except for the above.
- the stent 60 has a distal end surface force that is a distance to the flap 63 as compared with the conventional stent. Is shortened, and the proximal surface force and the distance to the flap 64 are also shortened. This is a force that makes it difficult for the wall surface of the lumen such as the bile duct W3 and the distal end of the stent 60 to interfere by shortening the distal end side.
- the rear end side is shortened because, for example, when the rear end of the stent 60 is placed in the duodenum W1, the amount of protrusion to the duodenum W1 can be reduced, so that the passage of food or the like is prevented. This is because it can be prevented.
- the distal end surface force of the stent 60 should be 20 mm to the flap 63, and the rear end surface force should be 12 mm to the flap 64! ,.
- the stent 60 can be smoothly inserted into the duodenal milk W2 and the like, and the discomfort given to the patient can be reduced.
- the distal end side inserted into the bile duct W3 or the like is made longer than before, the distal end of the stent 60 becomes difficult to be pulled against the wall surface, and damage to the mucosa of the duct wall can be prevented.
- the rear end side of the stent 60 is shortened, food and the like can easily pass through, and discomfort can be reduced if the patient feels uncomfortable.
- the stent 60 is previously sheathed on the guide catheter 25 as in the case described above. In this way, in the stent 60 that has a taper at the front end 6 la or a different length at the front end and the rear end, the orientation of the stent 60 is not mistaken.
- this embodiment may be housed in a case shown below.
- the stent delivery catheter 65 is characterized by including a protective case 70.
- a stent 71 is sheathed on the guide catheter 25.
- the stent 71 has a bent stent body 72, and four flaps 73 are provided at equal intervals in the circumferential direction on the distal end side of the stent body 72. Each flap 73 is curved so as to open toward the rear end.
- four flaps 74 on the rear end side are provided at equal intervals in the circumferential direction, and each flap 74 is bent so as to open toward the front end.
- Such a stent 71 is used, for example, to promote the discharge of bile in the constricted portion when the constriction is formed in the bile duct.
- the bottom body 80 and the lid body 81 are connected by a connecting portion 82, and the bottom body 80 and the lid are bent so that the connecting portion 82 is bent.
- body 81 a part of the stent 71 and the guide catheter 25 and a part of the pusher tube 24 can be accommodated in a space formed inside these parts.
- the bottom body 80 is provided with a recess 84 with a flange 83 at the outer peripheral edge, and a rib 85 for maintaining strength at the approximate center in the longitudinal direction.
- a plurality of grooves 86 are formed in the rib 85 along the length direction (the short side direction of the bottom body 80). These grooves 86 are for detachably holding the straight portion of the stent 71, and are formed in accordance with the diameter and shape of the stent 71.
- the flange portion 83 is provided with a convex portion 87 fitted to the lid 81 at each of its four corners.
- a slit 90 for passing the guide catheter 25 is formed on one side portion along the long side of the bottom body 80.
- the width of the slit 90 is sufficiently larger than the diameter of the guide catheter 25.
- a connecting portion 82 is connected to one edge portion 83a along the short side, and the bottom body 80 and the lid body 81 are connected to each other via the connecting portion 82. It is integrally formed.
- a tongue piece 92 that is locked to the flange portion 91 of the lid 81 extends from the other edge portion 83b.
- the lid body 81 is provided with a housing portion 93 with the flange portion 91 on the outer peripheral edge being recessed, and a rib 94 is provided at a substantially central portion in the longitudinal direction.
- the rib 94 is provided with a plurality of grooves 95 along which the stent 71 can be freely attached and detached.
- the groove 95 has a bent shape so as to be able to hold the bent portion of the stent 71.
- the flange portion 91 is overlapped with the flange portion 83 of the bottom body 80, and a recess 96 into which the protrusion 87 on the flange portion 83 side can be fitted is provided at each of the four corners.
- a slit 97 for passing the guide catheter 25 is formed on one side along the long side of the lid 81.
- the slit 97 is formed at a position coincident with the slit 90 and in the same shape as the slit 90, and the guide force tape 25 is passed through the space formed by the slit 97 and the slit 90.
- a plurality of slits 98 are provided on a side portion of the lid 81 at a position substantially corresponding to the slit 90 with the rib 94 interposed therebetween.
- Each slit 98 is used to position and pass through the pusher tube 24, has a width substantially equal to the outer diameter of the pusher tube 24, and a plurality of slits 98 are provided along the longitudinal direction of the lid 81. Each slit 98 is provided obliquely with respect to the longitudinal direction of the lid 81. Also, In order to prevent displacement of the pusher tube 24, the bottom body 80 is provided with one protrusion 99 at a position corresponding to the slit 98. As shown in FIG. 8, the flange portion 91 of the lid 81 is formed with an engaging portion 91a for locking the tongue piece 92.
- the stent delivery catheter 65 is stored together with the protective case 70 in a sterile pack.
- the heights of the accommodating portions 84 and 93 of the protective case 70 have sufficient rigidity against an external force that is sufficiently larger than the protruding amount of the flaps 73 and 74. Therefore, in this state, the flaps 73 and 74 of the stent 71 are not subject to interference by the wall portion of the protective case 70, and are maintained in an open state while being prevented from being deformed. Further, since it is held in the groove 86, movement is also prevented.
- the protective case 70 is opened, the pusher tube 24 is removed from the slit 98, and the stent 71 is removed from the groove 86. Subsequent usage is the same as in the first embodiment.
- the stent delivery catheter 65 can be stored and handled as a single unit, which makes it easy to handle.
- the flaps 73 and 74 can be prevented from being deformed more than necessary.
- the pusher tube 24 can be positioned and held, and an excessive force is prevented from acting on the stent 71. Since the guide catheter 25 side is made to pass through the wide slits 90 and 97, even when the stent 71 is held in the misaligned groove 86, an excessive force is applied to the guide catheter 25. It won't take.
- the guide catheter 25 is inserted into the slits 90 and 97 and the slit 98 provided on the side opposite to that in FIG. And the pusher tube 24 is passed.
- the stent introduction member 35 may be held by any one of the groove 86 and the groove 95.
- the stent introduction member 100 has a tubular main body 10 serving as a shielding part. 1 is provided, and a tapered transition portion 102 serving as a restricting portion is provided on the base end side of the main body portion 101, and the base end portion 103 has a diameter larger than that of the main body portion 101 by the transition portion 102. .
- the main body portion 101, the transition portion 102, and the base end portion 103 are integrally formed and have a hollow tube shape.
- the main body portion 101 is a shielding portion having an outer diameter that allows insertion from the insertion port 12 to the first pipeline 9 and the branching portion 8.
- the inner diameter of the main body 101 is large enough to insert the stent 30 with the flaps 32 and 33 closed.
- the length of the main body 101 is preferably 60 mm, which is shorter than the length of the pusher tube 24 which is longer than the length from the inlet 12 to the branching portion 8.
- the base end portion 103 has an outer diameter larger than that of the insertion port 12, and has an inner diameter into which the stent 30 can be inserted.
- the tube is formed by thermoforming, a step is formed by covering a heat-shrinkable tube or the like, and tubes having different outer diameters are connected. By doing so, the transition part 102 can be formed.
- the distal end portions of the guide catheter 25 and the stent 30 are inserted into the treatment instrument penetration channel 5 from the fistula entrance 12 of the endoscope 1.
- the stent introduction member 100 is inserted from the inlet 12.
- the stent introduction member 100 is inserted until the transition part 102 hits the insertion port 12.
- the front end of the main body 101 passes from the first conduit 9 through the branch portion 8 to the main conduit 7.
- the flap 33 on the rear end side of the stent 30 is guided into the main conduit 7 through the branch portion 8 while being accommodated in the stent introduction member 100.
- the transition portion 102 is pulled to the heel inlet 12, so that the insertion amount force of the stent introduction member 100 is regulated so that the insertion amount is suitable for introduction of the stent 30. Therefore, the stent introduction member 100 is prevented from being pushed into the endoscope 1 more than necessary.
- Other operations and effects are the same as those in the first embodiment.
- the following stent introduction member can also be used.
- the stent introduction member 110 has a tubular main body 111, and At the base end of the body part 111, a base end part 103 having a diameter expanded by the transition part 102 is provided. Further, a shield 112 is extended at the tip of the main body 111. The shielding portion 112 has a part of the peripheral surface of the main body portion 111 extending along the axis. The inner diameter of the main body 111 is large enough to accommodate the stent 30 with the flaps 32 and 33 closed, and the outer diameter of the main body 111 is smaller than the diameter of the first conduit 9.
- the length of the main body 111 is shorter than the total length of the first conduit 9, but the stent introduction member 110 as a whole is sufficient to reach the main conduit 7 from the insertion port 12 to the branch portion 8. It has become a length.
- the length of the main body 111 is preferably about 30 mm.
- the length of the shielding portion 112 is preferably about 30 mm.
- the marker 113 is provided in the transition part 102 of the stent introduction member 100 so that the position where the shielding part 112 is extended can be specified in the circumferential direction.
- the marker 113 is provided at a position where the extending position force of the shielding portion 112 is also shifted by 180 degrees in the circumferential direction.
- the marker 113 is provided at a position corresponding to the cut-out part.
- the stent introduction member 110 is inserted into the insertion port 12 when the stent 30 is introduced.
- the marker 113 of the transition part 102 is inserted until the transition part 102 hits the insertion port 12 so that the marker 113 is directed toward the endoscope insertion part 3, that is, downward in FIG.
- the shield 112 is inserted upward, that is, inserted into the second duct 10 at the branch 8 so as to shield the directional opening. .
- the flap 33 does not open at the branching portion 8, so that the flap 33 can be prevented from being bent.
- the stent introduction member 110 has a configuration in which the shielding portion 112 is extended from the main body portion 111, the stent introduction member 110 can be easily deformed along the pipeline, and workability is improved.
- the transition portion 102 the insertion amount of the stent introduction member 110 can be controlled, and the stent 30 can be reliably introduced.
- the marker 113 is attached to the transition portion 102, it is shielded. It becomes easier to visually confirm the position of the portion 112, and the shielding portion 112 can be surely arranged at a portion of the branching portion 8 toward the second conduit 10.
- the stent introduction member 120 has a main body portion 121 that is a tube-shaped shielding portion, and an annular marker 122 that is a marker portion is provided until the distal end force reaches the proximal end. It has been.
- the marker 122 is provided at a position corresponding to the length from the ridge entrance 12 to the main pipeline 7 beyond the branching portion 8, and is provided, for example, at a tip force of about 60 mm.
- the inner diameter, outer diameter, and length of the stent introduction member 120 are the same as those in the first embodiment.
- the stent introduction member 120 is inserted into the forceps port 12 until the marker 122 matches the forceps port 12. At this time, the front end of the main body 121 reaches the main pipeline 7 beyond the branching portion 8. Then, when the stent 30 is guided to the main duct 7 through the stent introduction member 120, the stent 30 force S flap 33 is introduced while being closed.
- the insertion amount of the stent introduction member 120 is easily divided by visually confirming the marker 122, so that the stent introduction member 120 is pushed too much into the endoscope 1. Can be prevented.
- Other operations and effects are the same as those in the first embodiment.
- the main body 121 may be color-coded. Specifically, different colors are applied to the distal end side and the proximal end side than the position corresponding to the marker 122.
- the treatment instrument penetration channel 5 which is a pipe line is provided with a regulating member 130 at the branch portion 8.
- the restricting member 130 is a substantially disc-shaped main body 1 connected to the first conduit 9.
- the main body 131 is fixed so as to cross the branching portion 8 diagonally and to block the radial path to the second pipe 10.
- the main body 131 is provided with a plurality of slits 132 in parallel. These slits 132 communicate with the branching portion 8 and the second conduit 10, and the main body 131 is formed in a lattice shape by the slit 132, leaving the outer edge portion.
- the guide catheter 25 having the stent 30 inserted therethrough is inserted from the insertion port 12.
- the stent 30 passes from the first conduit 9 through the branch portion 8 and enters the main conduit 7, but movement in the direction from the branch portion 8 toward the second conduit 10 is restricted by the restriction member 130. Therefore, it is guided to the main pipeline 7 so as to be guided by the main body 131 of the regulating member 130.
- the force of the first pipe 9 is also directed to the main pipe 7 and the diameter of the counter pipe is substantially equal to the diameter of the first pipe 9, so that the flap 33 of the stent 30 is not opened and remains as it is. Led to 7.
- physiological saline or the like is supplied from the second conduit 10, it passes through the slit 132, passes through the main conduit 7 from the branch portion 8, and is supplied into the body.
- the restricting member 130 is provided in the treatment instrument piercing channel 5, the diameter of the conduit when the stent 30 is introduced can be reduced, and the flap 32 of the stent 30 can be reduced. Since it is prevented from opening in the treatment instrument communication channel 5, it is possible to prevent the flap 32 from being bent. In addition, it is not necessary to add a special configuration to the stent delivery catheter side.
- the plate-like member that extends the shielding portion 112 may be configured to have a force as the stent introduction member. Even with such a stent introduction member, the same operations and effects as those of the main body portion 111 and the shielding portion 112 of the stent introduction member 110 can be obtained.
- a marker 122 may be provided at the proximal end portion of the shielding portion 112 so that the insertion amount of the shielding portion 112 can be visually confirmed.
- the first treatment means is not limited to the stent delivery catheter, but may be a guide wire, a papillotome knife, an imaging force tail or the like in which a bending heel is previously attached to the sheath distal end portion. Even in the case of these treatment means, the branch 8 to the second pipe 10 Entry into the device is prevented, and the pulling force in the treatment instrument penetration channel 5 is eliminated, so that penetration and removal can be performed quickly.
- the stent delivery catheter includes a protective case that holds the stent while being covered with the guide member and covers the stent with the flap of the stent opened.
- this stent delivery catheter is provided with a protective case, it is possible to prevent the flap of the stent from being bent during storage.
- a branch that has a flap at each of a front end portion and a rear end portion and is branched from a main duct of an endoscope having an opening at the front end by a branch portion.
- the stent can be inserted, and the length of the stent is longer than the distance from the opening to the branch of the main duct.
- the stent introduction member is inserted from the insertion port of the branch conduit, and the distal end portion of the stent introduction member extends from the branch conduit beyond the branch portion.
- a stent insertion step of passing at least the flap at the rear end portion through the branch portion through the stent introduction member.
- the stent introduction member insertion step is provided to narrow the apparent path when the stent passes through the branch portion of the duct and prevent the flap from being opened at the branch portion. As a result, unnecessary force does not act on the flap when the stent enters the branch force main conduit.
- the present invention it is possible to close a part of the branch portion of the duct in the endoscope and reduce the diameter of the portion through which the first treatment means is inserted. It is possible to prevent the first treatment means from being caught or partially bent. Therefore, the first treatment means can be surely introduced.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Endoscopes (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20050783371 EP1808077B1 (en) | 2004-09-24 | 2005-09-16 | An endoscopic system comprising a treatment instrument installation device |
| DE200560022907 DE602005022907D1 (de) | 2004-09-24 | 2005-09-16 | Endoskopisches system mit einer vorrichtung zur einleitung eines behandlungsgerätes |
| US11/515,591 US20070005122A1 (en) | 2004-09-24 | 2006-09-05 | Treatment instrument installation member, stent delivery catheter and conduit system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-277650 | 2004-09-24 | ||
| JP2004277650A JP4901087B2 (ja) | 2004-09-24 | 2004-09-24 | ステント導入部材、ステントデリバリーカテーテル、及び内視鏡処置システム |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/515,591 Continuation US20070005122A1 (en) | 2004-09-24 | 2006-09-05 | Treatment instrument installation member, stent delivery catheter and conduit system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006033309A1 true WO2006033309A1 (ja) | 2006-03-30 |
Family
ID=36090068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/017196 Ceased WO2006033309A1 (ja) | 2004-09-24 | 2005-09-16 | 処置手段導入部材及びステントデリバリーカテーテル並びに管路系 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20070005122A1 (ja) |
| EP (1) | EP1808077B1 (ja) |
| JP (1) | JP4901087B2 (ja) |
| DE (1) | DE602005022907D1 (ja) |
| WO (1) | WO2006033309A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105358101A (zh) * | 2013-07-11 | 2016-02-24 | 奥林巴斯株式会社 | 支架 |
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| US8298276B2 (en) * | 2007-12-03 | 2012-10-30 | Olympus Medical Systems Corp. | Stent delivery system, stent placement method, and stent attachment method |
| US8394139B2 (en) * | 2008-08-29 | 2013-03-12 | Cook Medical Technologies Llc | Barbed anchors for wire stent |
| WO2010144362A1 (en) * | 2009-06-12 | 2010-12-16 | Wilson-Cook Medical Inc. | Endoscopic ultrasound-guided stent placement device and method |
| US8771335B2 (en) * | 2009-09-21 | 2014-07-08 | Boston Scientific Scimed, Inc. | Rapid exchange stent delivery system |
| EP2489334B1 (en) | 2010-03-26 | 2014-07-16 | Olympus Medical Systems Corp. | Medical stent |
| US8979824B2 (en) | 2010-06-21 | 2015-03-17 | Boston Scientific Scimed, Inc. | Stent delivery system having retention structure |
| US8808348B2 (en) * | 2010-06-23 | 2014-08-19 | Boston Scientific Scimed, Inc. | Delivery system having stent retention structure |
| WO2012057313A1 (ja) | 2010-10-29 | 2012-05-03 | オリンパスメディカルシステムズ株式会社 | 医療用ステント |
| JP6037946B2 (ja) * | 2013-06-10 | 2016-12-07 | オリンパス株式会社 | ステント留置装置 |
| CA3244673A1 (en) | 2015-03-05 | 2025-02-21 | Merit Medical Systems, Inc. | VASCULAR PROSTHESIS DEPLOYMENT DEVICE AND ITS METHOD OF USE |
| US10470906B2 (en) | 2015-09-15 | 2019-11-12 | Merit Medical Systems, Inc. | Implantable device delivery system |
| JP7094898B2 (ja) * | 2016-06-09 | 2022-07-04 | ヌバイラ, インコーポレイテッド | 拡張可能カテーテルアセンブリの体腔への改善された送達のためのシステムおよび方法 |
| CN115054413B (zh) | 2016-09-29 | 2026-04-14 | 美国医疗设备有限公司 | 调整支架有效长度的方法和假体递送导管组件 |
| US10744009B2 (en) | 2017-03-15 | 2020-08-18 | Merit Medical Systems, Inc. | Transluminal stents and related methods |
| WO2018170066A1 (en) * | 2017-03-15 | 2018-09-20 | Merit Medical Systems, Inc. | Transluminal delivery devices and related kits and methods |
| CN110769786B (zh) | 2017-06-13 | 2022-12-09 | 株式会社钟化 | 生物体内留置管 |
| GB201718299D0 (en) * | 2017-11-03 | 2017-12-20 | Ab Wasstand Dev | Stents |
| JP7039957B2 (ja) * | 2017-11-24 | 2022-03-23 | 株式会社ジェイ・エム・エス | ステント |
| US11344400B2 (en) * | 2019-08-08 | 2022-05-31 | Stryker Corporation | Implant delivery assembly with distal protection feature |
| JP6988028B2 (ja) * | 2019-09-03 | 2022-01-05 | シルックス株式会社 | チューブステントデリバリーシステム |
| WO2021053728A1 (ja) * | 2019-09-17 | 2021-03-25 | オリンパス株式会社 | 挿入機器 |
| EP4185239A4 (en) | 2020-07-24 | 2024-08-07 | Merit Medical Systems, Inc. | Esophageal stents and related methods |
| WO2022093710A1 (en) | 2020-10-26 | 2022-05-05 | Merit Medical Systems, Inc. | Esophageal stents with helical thread |
| US11903812B2 (en) * | 2021-05-25 | 2024-02-20 | Mozarc Medical Us Llc | Ureteral stent |
| JP7587557B2 (ja) * | 2022-09-29 | 2024-11-20 | 日本ライフライン株式会社 | カテーテル挿入器具、カテーテル装置 |
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| CN105358101A (zh) * | 2013-07-11 | 2016-02-24 | 奥林巴斯株式会社 | 支架 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1808077A4 (en) | 2008-02-13 |
| EP1808077A1 (en) | 2007-07-18 |
| JP4901087B2 (ja) | 2012-03-21 |
| JP2006087712A (ja) | 2006-04-06 |
| EP1808077B1 (en) | 2010-08-11 |
| US20070005122A1 (en) | 2007-01-04 |
| DE602005022907D1 (de) | 2010-09-23 |
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