CN105228562A - There is the conduit of hydraulic actuator and locking system - Google Patents

There is the conduit of hydraulic actuator and locking system Download PDF

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Publication number
CN105228562A
CN105228562A CN201380074601.0A CN201380074601A CN105228562A CN 105228562 A CN105228562 A CN 105228562A CN 201380074601 A CN201380074601 A CN 201380074601A CN 105228562 A CN105228562 A CN 105228562A
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CN
China
Prior art keywords
tubular member
conduit
outer tubular
actuator means
inner tubular
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.)
Granted
Application number
CN201380074601.0A
Other languages
Chinese (zh)
Other versions
CN105228562B (en
Inventor
D.H.舒默
M.L.格林
P.C.萨克斯顿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Abbott Cardiovascular Systems Inc
Original Assignee
Abbott Cardiovascular Systems Inc
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 Abbott Cardiovascular Systems Inc filed Critical Abbott Cardiovascular Systems Inc
Priority to CN201711155958.8A priority Critical patent/CN107744418B/en
Publication of CN105228562A publication Critical patent/CN105228562A/en
Application granted granted Critical
Publication of CN105228562B publication Critical patent/CN105228562B/en
Expired - Fee Related legal-status Critical Current
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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
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • 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
    • 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
    • A61F2002/9505—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument

Abstract

A kind of conduit, described conduit comprises the pressure chamber limited by proximal seal and distal seal and inner tubular member and outer tubular member.Can the actuator means of movement between the first location and the second location be arranged in described pressure chamber.Introduce the fluid applying power in described actuator means in described pressure chamber, so that described actuator means is shifted to the described second position.The locking mechanism be arranged between inner tubular member and outer tubular member comprises lock bolt, and described lock bolt comprises and prevents described outer tubular member relative to the engagement state of described inner member movement and allow the disengaged position of described outsourcing piece movement.When described actuator means is moved on to the described second position, described latch displacement is to described disengaged position.When described actuator means is in the described second position and described lock bolt is under disengaged position, introduced by described fluid flow port and the fluid applying power in described proximal seal be incorporated in described pressure chamber, actuate described outer tubular member with proximad.

Description

There is the conduit of hydraulic actuator and locking system
Technical field
Disclosed theme relates to the conduit being used for the treatment of the tube chamber system of patient for sending the medical treatment devices such as such as self-expandable stent.Specifically, disclosed theme relates to the delivery catheter had by the regracting formula pipe sheath of hydraulic actuator movement.
Background technology
There will be a known the system of multiple use regracting formula pipe sheath for endoluminal delivery medical treatment device, such as, support or filter screen.But, still need to update this known delivery system.
At the United States Patent (USP) the 6th, 425 of the people such as Wilson, describe an example of this system in No. 898, this patent is incorporated to herein by reference, and wherein, provide a kind of delivery system with inner member, this inner member has the retainer being attached to inner member.During launching, retainer prevents support from moving on nearside during make pipe sheath retract in order to stent.
Conventional self-expandable stent delivery system generally comprises handle portion and slender axles, and wherein, Bracket setting is being positioned at the delivery portion of far-end of axle.In order to stent, provide outer tube sheath, this outer tube sheath can be retracted relative to support, to send configuration releases clamp from support.The total length of the general mutual conductance pipe of pipe sheath in such systems, thus cause the profile in the whole length of conduit and rigidity to increase.Some application can be restricted in this rigidity of the far-end of conduit and the profile of increase, such as, the nerve of specific size restriction and other indications.In addition, because the total length of pipe sheath mutual conductance pipe, so during the roundabout tube chamber system by patient, the risk that the miscellaneous part of pipe sheath and conduit bonds increases, and thereby inhibiting the expansion of support.
Another problem of this delivery system is that pipe sheath generally retracts according to inputting (power) ratio in 1:1 with user.Because may embed due to larger static friction in outer tube sheath in storage and In transit support, so usually require that a large amount of initial inputs carrys out releases clamp, this may cause the placement of mistake.When initial releases clamp, slowly retract pipe sheath realize correct placement then make more easily pipe sheath retract may be desirable, to prevent the accidental movement of support.
In addition, the size making the power needed for pipe sheath (support that especially length is longer than periphery indication Len req) retraction can be very large.In order to overcome this problem, smooth liner can be used reduce the size of the power made needed for the retraction of pipe sheath.But still need the improved delivery system for self-expandable stent, this system has the power requirement of reduction to sending self-expandable stent etc.
Thus, still constantly need for sending the efficient of medical treatment device and the system of economy, this system is easy to use and provide place accurately.Current disclosed theme meets these and requires and other requirements.
Summary of the invention
The object of disclosed theme and advantage will be set forth and by explanation below obviously in the following description, and by the acquistion by the theme disclosed in practice.Other advantages of disclosed theme are by the device by specifically noting in printed instructions and claims thereof and recognized by accompanying drawing and obtain.
In order to realize these and other advantages, according to the object of disclosed theme, as embody and summarize description, disclosed theme comprises a kind of conduit, described conduit comprises: among other things, have the inner tubular member of close end, distal portion and outer surface, described inner tubular member also has restriction fluid cavity within it, and described fluid cavity has the fluid flow port limited along the described distal portion of described inner tubular member by described outer surface.Described conduit also comprises can relative to the outer tubular member of described inner tubular member movement, and described outer tubular member has the inner surface of near-end, far-end and the described outer surface towards described inner tubular member.Proximal seal extends from the described outer surface of inner tubular member described in the described interior face of described outer tubular member.Described proximal seal is positioned at the nearside of described fluid flow port.The described inner surface of distal seal from the described outer surface of described inner tubular member towards described outer tubular member extends.Described distal seal is positioned at the distally of described fluid flow port.Pressure chamber is limited by the described outer surface of described proximal seal, described distal seal, described inner tubular member and the described inner surface of described outer tubular member.
Actuator means is arranged in described pressure chamber, and described actuator means has seal section and cam segment.Described actuator means can move between the first location and the second location.Introduced by described fluid flow port and the fluid applying power on described seal section be incorporated in described pressure chamber, so that described actuator means is shifted to the described second position from described primary importance.In addition, locking mechanism is arranged between the described outer surface of described inner tubular member and the described inner surface of described outer tubular member.Described locking mechanism comprises lock bolt, and described lock bolt has and prevents described outer tubular member relative to the engagement state of described inner tubular member movement and allow described outer tubular member relative to the disengaged position of described inner tubular member movement.When described actuator means is moved on to the described second position, make described latch displacement to described disengaged position by described cam segment.When described actuator means is in the described second position and described lock bolt is under described disengaged position, introduced by described fluid flow port and the fluid applying power in described proximal seal be incorporated in described pressure chamber, to actuate described outer tubular member in a proximal direction.
According to the another aspect of disclosed theme, provide a kind of method launching conduit, it comprises: among other things, provides above-mentioned conduit.Particularly, described conduit comprises the inner tubular member with close end, distal portion and outer surface.Described inner tubular member also has restriction fluid cavity within it, and described fluid cavity has the fluid flow port limited along the described distal portion of described inner tubular member by described outer surface.Outer tubular member can move relative to described inner tubular member, and described outer tubular member has the inner surface of near-end, far-end and the described outer surface towards described inner tubular member.Described conduit also comprises the proximal seal extended from the described outer surface of inner tubular member described in the described interior face of described outer tubular member, and described proximal seal is positioned at the nearside of described fluid flow port.Provide the distal seal that the described inner surface from the described outer surface of described inner tubular member towards described outer tubular member extends, described distal seal is positioned at the distally of described fluid flow port.Thus provide the pressure chamber limited by the described outer surface of described proximal seal, described distal seal, described inner tubular member and the described inner surface of described outer tubular member.
In addition, according to the described method in herein, described conduit comprises the actuator means be arranged in described pressure chamber, and described actuator means has seal section and cam segment.Described actuator means can move between the first location and the second location.Introduced by described fluid flow port and the fluid applying power on described seal section be incorporated in described pressure chamber, so that described actuator means is shifted to the described second position from described primary importance.Locking mechanism is arranged between the described outer surface of described inner tubular member and the described inner surface of described outer tubular member.Described locking mechanism comprises lock bolt, and described lock bolt has and prevents described outer tubular member relative to the engagement state of described inner tubular member movement and allow described outer tubular member relative to the disengaged position of described inner tubular member movement.When described actuator means is moved on to the described second position, make described latch displacement to described disengaged position by described cam segment.
By using above-mentioned conduit, described method is also included in the position setting device in described distal seal distally between the described outer surface of described inner tubular member and the described inner surface of described outer tubular member.Described method also comprises to be introduced fluid in described pressure chamber described actuator means is shifted to the described second position and makes the described latch displacement of described locking mechanism to described disengaged position by described fluid flow port, wherein, when described actuator means is in the described second position and described lock bolt is under described disengaged position, introduced by described fluid flow port and the fluid applying power in described proximal seal be incorporated in described pressure chamber, to actuate described outer tubular member in a proximal direction.
It being understood that aforementioned comprehensive explanation and detailed description below and accompanying drawing are all examples, and for illustrating, be not intended to the scope limiting disclosed theme by any way.
Comprise in this manual and the accompanying drawing forming a part for this explanation for illustrating and providing the further understanding of the device to disclosed theme.In conjunction with this explanation, accompanying drawing is for explaining the principle of disclosed theme.
Accompanying drawing explanation
The theme of the application will be easier to understand by following detailed description when reading by reference to the accompanying drawings, in the accompanying drawings:
Fig. 1 is the schematic side view of the representative conduit according to disclosed theme.
Fig. 2 is the perspective view of the distal ports of the conduit of Fig. 1.
Fig. 3 A is the perspective cross-sectional view of the conduit of Fig. 2 that 3-3 along the line intercepts.
Fig. 3 B is the perspective cross-sectional view of another embodiment of the conduit of Fig. 2 that 3-3 along the line intercepts.
Fig. 4 is the perspective cross-sectional view of the distal ports of conduit according to disclosed theme, and wherein pipe sheath is in the closed position.
Fig. 5 is the cross-sectional side view of the far-end of the conduit of Fig. 4, and wherein conduit is in full retracted position.
Fig. 6 is the perspective cross-sectional view of the distal ports of the alternate embodiment of conduit according to disclosed theme, and wherein pipe sheath is in full retracted position.
Fig. 6 A is the viewgraph of cross-section of the conduit of Fig. 6 that 6a-6a along the line intercepts.
Fig. 7 is the detailed perspective view of the conduit of Fig. 4 that 7-7 along the line intercepts.
Fig. 8 is the perspective cross-sectional view of the conduit of Fig. 7.
Fig. 9 is the cross-sectional side view of the distal portion of another embodiment of the conduit when actuator and locking mechanism are under engagement state according to disclosed theme.
Figure 10 A is the perspective view of the actuator means according to disclosed theme, and Figure 10 B is the side view of the actuator means of Figure 10 A, and Figure 10 C is the cross section of the actuator means of Figure 10 B.
Figure 11 A is the perspective view of the locking mechanism according to disclosed theme, Figure 11 B is the side view of the locking mechanism of Figure 11 A, Figure 11 C is the front view of the locking mechanism of Figure 11 A, Figure 11 D is the cross section of locking mechanism of Figure 11 B that cross-line 11D-11D intercepts, and Figure 11 E is the detailed view of the locking mechanism of Figure 11 D around online 11E.
The cross-sectional side view of conduit when Figure 12 is under locking mechanism is in disengaged position.
Detailed description of the invention
Now with detailed reference to the embodiment of disclosed theme, illustrate an example of these embodiments in the accompanying drawings.Combination is described disclosed theme to the detailed description of system.
As disclosed here, mentioned herein go out device may be used for treating the tube chamber system of patient.Particularly, disclosed theme is particularly useful for treating the cardiovascular system of patient and unifies peripheral-system.
According to disclosed theme, provide a kind of conduit, this conduit comprises: among other things, there is the inner tubular member of close end, distal portion and outer surface, inner tubular member also has restriction fluid cavity within it, and fluid cavity has the fluid flow port limited along the distal portion of described inner tubular member by outer surface.Conduit also comprises can relative to the outer tubular member of inner tubular member movement, and outer tubular member has the inner surface of near-end, far-end and the outer surface towards inner tubular member.Proximal seal extends from the outer surface of the interior face inner tubular member of outer tubular member.Proximal seal is positioned at the nearside of fluid flow port.Distal seal extends from the outer surface of inner tubular member towards the inner surface of outer tubular member.Distal seal is positioned at the distally of fluid flow port.Pressure chamber is limited by the outer surface of proximal seal, distal seal, inner tubular member and the inner surface of outer tubular member.
Actuator means is arranged in pressure chamber, and actuator means has seal section and cam segment.Actuator means can move between the first location and the second location.Introduced by fluid flow port and the fluid be incorporated in pressure chamber applying power on seal section, so that actuator means is shifted to the second position from primary importance.In addition, locking mechanism is arranged between the outer surface of inner tubular member and the inner surface of outer tubular member.Locking mechanism comprises lock bolt, and lock bolt has and prevents outer tubular member relative to the engagement state of inner tubular member movement and allow outer tubular member relative to the disengaged position of inner tubular member movement.When actuator means is moved on to the second position, make latch displacement to disengaged position by cam segment.When actuator means is in the second position and lock bolt is under disengaged position, introduced by fluid flow port and the fluid be incorporated in pressure chamber applying power in proximal seal, to actuate outer tubular member in a proximal direction.
Also disclose a kind of method for launching above-mentioned conduit.The feature of uniting conduit is described in detail the method details upon deployment.
Only for the object of diagram, schematically show the illustrative examples of the hydraulic pressure delivery system for self-expandable stent etc. in fig. 1 and 2, this self-expandable stent etc. be delivered at least partially in vascular system.Example herein is not intended to the scope limiting disclosed theme by any way.Particularly, as shown in the figure, the hydraulic pressure delivery system herein comprised is the conduit 100 for cardiovascular intervention etc.It is contemplated that for other purposes and indication herein, such as, periphery and the conduit got involved at one's knees.Conduit 100 comprises the inner tubular member 110 with close end, distal portion and outer surface.Conduit 100 also comprises outer tubular member or pipe sheath 120, and this outer tubular member or pipe sheath 120 can move relative to inner tubular member 110 and have the inner surface of near-end, far-end and the outer surface towards inner tubular member 110.As shown in Figure 2, in the present embodiment, outer tubular member 120 is only arranged on the remote end part of conduit.For other embodiments, outer tubular member 120 can be arranged on close end and/or the remote end part of conduit.As further described herein, the conduit of disclosed theme can be configured to the medical treatment device sending any appropriate length, such as, and support.That is, conduit can be configured to generate the power being enough to outer tubular member is retracted, and wherein, the power generated is greater than the resistance that the medical treatment device by acting in outer tubular member causes.
Only for the object of diagram, with reference to Fig. 3 A, this diagram depicts the representative viewgraph of cross-section of the exemplary inner tubular member 110 intercepted according to the line 3-3 along Fig. 2 of disclosed theme.Inner tubular member 110 also comprises restriction fluid cavity 310 within it.In one embodiment, inner tubular member also can have at least along the guidewire lumen 320 that the length in it limits.Such as, if guidewire lumen 320(provides) can extend in the whole length of inner tubular member 110 (such as, for " on silk " configuration), or only extend (such as, for " exchanging fast " embodiment) along distal length.Alternately, conduit 100 can have the design of single chamber, and seal wire and pressure fluid can share identical chamber (not shown), wherein, can provide sealing member or valve at far-end and proximal end.
Fig. 3 B depicts another embodiment of the representative viewgraph of cross-section of the exemplary inner tubular member 110 that the line 3-3 along Fig. 2 intercepts.In the present embodiment, as shown in Figure 3 B, female only for diagram, guidewire lumen 320 can be limited by the independent wire leading pipe 321 be arranged in fluid cavity 310 at least in part, and is sealed in side, such as, such as, by labelling (not shown).This arranged coaxial achieves the diameter reducing inner tubular member 110, and thus reduces profile.In fact, the wire leading pipe 321 defining guidewire lumen 320 can be formed by the thin film of proper strength, penetrates from it to prevent seal wire.Hydraulic fluid can flow thus in fluid cavity 310, but does not flow out guidewire lumen 320.
Only for the object of diagram, referring now to the quick exchange configuration of conduit disclosed herein, as shown in Figure 4.Generally speaking, conduit comprises the inner tubular member 110 with close end, distal portion and outer surface.Inner tubular member 110 also comprises fluid cavity 310, and this fluid cavity 310 has the fluid flow port 420 limited along the distal portion of inner tubular member 110 by outer surface 111.Conduit also comprises outer tubular member 120, and this outer tubular member 120 can move relative to inner tubular member 110 and have the inner surface 121 of near-end, far-end and the outer surface 111 towards inner tubular member 110.As described in more detail below, fluid flow port 420 allows fluid to flow into the space limited by inner tubular member 110 and outer tubular member 120, for carrying out operation and the retraction of outer tubular member 120 in fluid cavity 310.Labelling 422 can limit the far-end of fluid flow port 420.As embodied herein, rapid-exchange catheter also comprises guidewire lumen 320, and this guidewire lumen 320 extends along the distal portion of conduit and comprises proximal guidewire mouth 410 and distal guide mouth 430.
As shown in the figure, outer tubular member 120 can move to punctured position as shown in Figure 5 from extended position as shown in Figure 4.When making outer tubular member 120 extend, outer tubular member 120 is by medical treatment device, and the support 440 such as herein described, remains on compression or sending state.Also distal end 460 can be provided to surround medical treatment device further in delivery device.When making outer tubular member 120 retract (as shown in Figure 5 and Figure 6), extracting medical treatment device and making it expand into deployed condition.
Outer tubular member 120 also can comprise at least one the removable tubular structure 130 being coupled to the near-end of outer tubular member and/or the far-end of outer tubular member.Be current pending application middle other details setting forth relevant removable tubular structure of " CatheterHavingMovableTubularStructure " by what give AbbottCardiovascularSystemsInc. company with the title that the application submits on the same day, the content of this application is all incorporated to herein by reference.
Fluid cavity 310 has fluid flow port 420.Fluid flow port 420 is limited with the outer surface of inner tubular member 110 along inner tubular member 110.As described in more detail below, fluid flow port 420 allow fluid to flow in fluid cavity 310 to be limited by inner tubular member 110 and outer tubular member 120 and space between proximal seal 720 and distal seal 730.Labelling 422 can limit the far-end of fluid flow port 420.
Only for the object of diagram, Fig. 7 and Fig. 8 depicts pressure chamber 450, proximal seal 720 and distal seal 730.Be in the object of discussion and diagram, not shown miscellaneous part in pressure chamber herein, but can be from the title all by AbbottCardiovascularSystemsInc. company carried out at MichaelGreen and MichaelBialas the U. S. application the 13/467th of " CatheterhavingDualBalloonHydraulicActuator ", No. 679 and be the U. S. application the 3/467th of " CatheterhavingHydraulicActuatorwithTandemChambers " at the title that MichaelGreen and MichaelBialas carries out, being described in more detail in No. 715 understands, the volume content of these two applications is all incorporated to herein by reference.Proximal seal 720 extends from the outer surface of the interior face inner tubular member 110 of outer tubular member 120, and is positioned at the nearside of fluid flow port 420.Proximal seal 720 is fixed to the inner surface of outer tubular member 120, and freely moves relative to inner tubular member 110.
Continue with reference to Fig. 7 and Fig. 8, the distal seal 730 that conduit 100 also comprises and proximal seal 720 interval separates.Distal seal 730 extends from the outer surface of inner tubular member 110 towards the inner surface of outer tubular member 120, and is positioned at fluid flow port 420 distally.Distal seal 730 is fixed to the outer surface of inner tubular member 110, and freely moves relative to the inner surface of outer tubular member 120.In this way, outer tubular member 120 freely moves relative to distal seal 730.As here embodied, and as shown in Figure 7, one or two in proximal seal and distal seal can form the dust seal 740 across corresponding surface.
As shown in Figure 7 and Figure 8, only for the object of diagram, conduit 100 comprises the pressure chamber 450 limited by the outer surface 111 of proximal seal 720, distal seal 730, inner tubular member 110 and the inner surface 121 of outer tubular member 120.Pressure chamber 450 is communicated with fluid flow port 420 fluid.
As recognized in the art, outer tubular member 120 comprises medical treatment device to be delivered.Medical treatment device, such as, self-expandable stent, by making outer tubular member 120(catheter sheath) retract and launch.Retraction realizes by using the such as conventional equipment such as pressure generator or syringe under stress fluid to be directed across fluid cavity 310.Pressure generator can comprise thread engaging mechanism or other locking mechanisms with the pressurization of controlled pressure chamber (not shown) and decompression.In addition, Pressure gauge can be provided together with pressure generator with the pressure system of monitoring tube.Pressure generator can be configured to allow to discharge hydraulic pressure fast to stop or suppressing the expansion of support.Pressure generator also can be configured to create in the catheter and/or maintain negative pressure.Pressure generator can create the vacuum of the profile reducing conduit further.Such as, by creating vacuum, outer tubular member 120 disclosed herein can be configured to reduce profile and/or latched position.The example of suitable pressure generator is Atrion pressure generator AtrionMedical-55ATM.
Adapter can be provided for entering fluid cavity in the proximal end of conduit, and can be configured to be connected to fluid source (not shown).With reference to Fig. 7, fluid to be introduced in fluid cavity and to leave fluid cavity from flow ports 420, and stuffing pressure chamber 450.Once be incorporated in pressure chamber 450 by enough fluids, distal seal and proximal seal apply power.Because distal seal 730 is fixed relative to inner member, so only proximal seal 720 and the outer tubular member 120 that is attached to this proximal seal 720 can move relative to inner member on proximal direction P.Proximal seal 720 movement of working as in pressure chamber 450 when applying power makes outer tubular member 120 move along inner tubular member on proximal direction P, thus medical treatment device can be launched.As here embodied, distal seal 730 is configured to the dust seal of the inner surface with outer tubular member 120.Outer tubular member 120 moves relative to distal seal 730 thus.The proximal seal 720 being mounted to the inner surface of outer tubular member 120 is configured to the dust seal of the outer surface 111 with inner tubular member 110.Proximal seal 720 moves freely relative to inner tubular member 110.
Although be depicted as one chip seal construction in figures 7 and 8, if desired, each sealing member of disclosed theme can be multiple-piece black box.Such as, black box can comprise containment member and provide the sleeve pipe of backing to containment member, as known in the art.Sealing member 720 and 730 can be supported by proximal collar and distally sleeve pipe (not shown) further respectively.According to an aspect of disclosed theme, sleeve pipe can be made up of any suitable material, include but not limited to PEEK, Pebax, HDPE, LDPE, the blend of nylon etc. such as mixture of HDPE and LDPE, such as L75/L25.And sleeve pipe can comprise other blends of metal material, combination Low Density Polyethylene, silicon, nitrile, soft Pebax30 or suitable material, and can scribble suitable material as known in the art, and can comprise coating.
Owing to needing higher fluid pressure to make outer tubular member 120 retract, so mineralization pressure chamber is to tolerate this pressure, realize minimum leakage to No leakage.Multiple suitable seal construction and material can be used, such as, but be not limited to, sliding seal, ring, cup seal, lippacking and compression sleeve.Such as, each sealing member can be formed as independent component and be attached to corresponding tubular element, or, a part for tubular element can be formed as.Only for the object of diagram, for sealing member, can water wetted material be used, such as, but be not limited to, HydroMed tM, Hydrothane tM, Hydak (R).The sealing member be made up of this material can be configured to the profit when being exposed to aqueous environment, closely seals thus while maintenance is smooth.Sealing member can comprise the complex of expandable material or material thus correspondingly to increase, to mate the size of outer tubular member.That is, sealing member can comprise the sealing expanding to maintain abundance together with outer tubular member.
Along with pressure chamber expands, the exposed surface area of sealing member also can increase, thus causes the proportional increase of withdrawal force under given fluid pressure.Thus, expansion type pressure chamber provides larger withdrawal force at a given pressure.The sealing member be made up of this material can be configured to the profit when being exposed to aqueous environment, closely seals thus while maintenance is smooth.Alternately, proximal seal and distal seal can scribble hydrophobic layer, such as oil or wax, or are made up of hydrophobic material, such as fluorocarbon or alkene, the polypropylene such as used together with suitable pressure fluid, moisten open to prevent sealing member.Only for example, the silicone encapsulant with Hydromer2314-172 coating can be provided.In another embodiment, for the seal construction be made up of silicones, buna or other suitable elastomers, O type ring can be used.And only for the mother of example, sealing member can comprise soft syringe, such as, low-hardness tester Pebax.Additionally or alternately, high viscosity hydraulic fluid can be used suppress leakage.
The embodiment authorized pressure chamber of disclosed theme utilizes multiple different convenient pressure to run.Only for the object of example, in one embodiment, pressure chamber can process the malleation up to 750psi and the negative pressure close to 14psi.The Example operating parameters of cardiovascular catheters is included in close to 40ATM to 50ATM(or about 588-735PSI) operating pressure in scope.
According to another aspect, conduit also can comprise bend pipe or the airbag components (not shown) at intracavity, in case stopping leak dew.Bend pipe or airbag components are attached to the outer surface of inner tubular member, and are communicated with fluid flow port fluid, and wherein, the fluid introduced by fluid flow port makes airbag components expand, and retracts to make outer tubular member further.
Disclosed theme another in, spacer element (not shown) can be provided in pressure chamber.Pressure chamber can prevent outer tubular member, proximal seal and distal seal from caving in sending and preserve catheter device.Spacer element also can reduce the amount of the fluid made needed for outer tubular member retraction.Spacer element can be made up of any one shape in multiple suitable shape and material and material, such as, has the ring element of diameter corresponding with the internal diameter of inner tubular member and outer tubular member and external diameter respectively.
If desired, distal seal can form block for medical treatment device or stopper element.Alternately, according to the another aspect of disclosed theme, conduit can comprise the retainer 710 being fixed to inner tubular member 110, as Fig. 7 and Fig. 8 describe.Retainer be arranged on pressure chamber distally and at the nearside of medical treatment device (such as, support) to be delivered.In this way, retainer 710 sealed hydraulic fluid cavity 310, but allow wire leading pipe 321 and/or seal wire (not shown) to pass through.Retainer 710 can by or comprise radiopaque material, to provide the observability of placing for conduit to performing the doctor of this program, thus make it possible to exactly medical treatment device is positioned at treatment site.Retainer 710 is radiopaque labelling thus.Such as, labelling can be radiopaque becket, or is made up to increase pliability and pliability of the polymer being added with tungsten.The suitable labelling that other are known can be used.In other embodiments, the medical treatment device interval that pressure chamber 450 and band are sent separates, as discussed further herein.
According to the another aspect of disclosed theme, can provide other features, such as, spring, to make outer tubular member 120 at proximal direction P upper offset.The title all by AbbottCardiovascularSystemsInc. company that the spring can implemented together with the embodiment of this theme and the example of other features can be carried out at MichaelBialas and MichaelGreen is the U. S. application the 13/467th of " CatheterhavingHydraulicActuator ", No. 660, the title all by AbbottCardiovascularSystemsInc. company undertaken by MichaelGreen and MichaelBialas is the U. S. application the 13/467th of " CatheterhavingDualBalloonHydraulicActuator ", No. 679, with the U. S. application the 3/467th that the title undertaken by MichaelGreen and MichaelBialas is " CatheterhavingHydraulicActuatorwithTandemChambers ", find in No. 715, the content of these patents is all incorporated to herein by reference.
Referring now to Fig. 6, only for the object of diagram, this diagram depicts " on silk " modified example of disclosed theme.In the present embodiment, conduit 100 comprises inner tubular member 110, outer tubular member 120(is shown in retracted position place), guidewire lumen 320 and there is the fluid cavity 310 of fluid flow port 420.Conduit 100 also comprises and being depicted as the medical treatment device (such as, support 400) of swelling state, carrier base 510 and distal guide mouth 430.
As shown in Figure 6A, only for the object of diagram, the inner tubular member 110 of conduit or slender conduit axle can comprise the first and second tubular elements 110 and 610, this first and second tubular element 110 and 610 respectively with each other in coaxial relation, to be limited to center guidewire lumen 320 in the first tubular element 110 and the annular fluid chamber 310 between the first and second tubular elements 610 of inner tubular member or axle.Fluid cavity 310 can sap pressure supply medium under positive pressure, and, if desired, hydraulic medium can be made to return (that is, providing negative pressure) from pressure chamber 450.The size of conduit is designed to and is configured to send in the body cavity of correspondence for set indication, such as, for the vascular system that blood vessel is got involved.Conduit comprises guidewire lumen, for sending on seal wire 620, as shown in Figure 6A.Such as, in one embodiment, such as nerve accommodation disease, conduit can compatible 0.012 or 0.010 seal wire.The part at chamber distal extension of inner tubular member can be limited by the extension of the first tubular element 110, or is limited by the extension of the second tubular element 610, or, if desired, limited by independent tubular element.Although depict (OTW) conduits configurations on co-axial shafts and silk in figure 6, but it will be recognized by one skilled in the art that in the scope not departing from disclosed theme, other configurations and known building material can be used, such as, exchange and/or two-chamber configuration fast as previously described.
In addition, according to disclosed theme, also can provide actuator means and locking component, move in a proximal direction in advance to prevent the outer tubular member of conduit.The object unrestricted for diagram, with reference to the conduit as described above with one or more pressure chamber.Actuator means is arranged in pressure chamber for moving between the first location and the second location.In addition, locking mechanism is arranged in pressure chamber.Locking mechanism has for placing outer tubular member relative to the engagement state of inner tubular member movement and the disengaged position allowing outer tubular member movement.When actuator is moved to the second position, locking mechanism is moved to disengaging configuration.
Referring now to the representative conduit embodiments of Fig. 9, this diagram depicts the locking system of an embodiment according to disclosed theme.Locking system comprises the actuator means 801 be arranged in pressure chamber 450, as depicted.Actuator means 801 can move between the first location and the second location.Actuator means 801 comprises seal section 801A and cam segment 801B.
Referring now to Figure 10 A to Figure 10 C, depict the exemplary embodiment of the actuator means 801 of disclosed theme.Generally speaking, as in the perspective view of Figure 10 A describe, actuator means 801 is cylindrical form, and can move along the outer surface of inner tubular member.As shown in Figure 10 B, the seal section 801A herein described is formed as the flange extended radially outwardly, although can other be used to configure.Cam segment 801B is formed as the angled faces of the proximal end being arranged on actuator means.Cam face can relative to longitudinal axis shape at an angle, such as, between about 10 ° to about 45 °.Alternately, cam can be continuous surface etc.In addition, actuator means can be provided with dust seal or internal diameter and reduces to form to the outer surface of inner tubular member the similar configuration sealed along one end or two ends.Actuator means can be made up of any suitable material that can undesirably play a role.Such as, for cardiovascular indications, the scleroscopic 6 grades of medical materials had close to 50 to about 90 scopes can be used.
Look back Fig. 9, stopper element 810 can be arranged between outer tubular member 120 and inner tubular member 110.Such as, as here embodied, stopper element 810 can comprise own floating member, such as, and can relative to the sleeve of outer tubular member 120 movement.Stopper element 810 can be arranged on the distally of actuator means 801, to limit the primary importance of actuator means 801 fluid relative flow ports 420.As Fig. 9 describe, stopper element 810 makes actuator means 801 separate with distal seal 730, and the initial actuator means 801 arranged is in the nearside of fluid flow port 420 when primary importance.Stopper element 810 defines one or more flange or the step of increase internal diameter in a proximal direction, as shown in Figure 9.For stopper element 810, any suitable component can be used, such as, sleeve pipe.When actuator means 801 is in primary importance, the seal section 801A of actuator means docks with flange or stopper element 810, seals to be formed with outer tubular member 120 and inner tubular member 110.Distal chamber portion 450A and proximal chamber portion 450B is defined by being sealed in pressure chamber 450 of creating of the seal section 801A of actuator means 801.When actuator is in primary importance, stopper element 810 is arranged in distal chamber 450A.
Along with the distal chamber portion 450A by fluid flow port 420, fluid being introduced pressure chamber 450, seal section 801A applies power, actuator means 801 to be moved from primary importance towards the second position on proximal direction P.When actuator means 801 moves towards the second position, actuator means 801 becomes and stopper element 810 interval separates, and the sealing created by seal section 801A is interrupted.Therefore, the nearside of actuator means 801 moves and makes distal chamber portion 450A and proximal chamber portion 450B fluid communication with each other, and the fluid introducing distal chamber portion 450B moves in proximal chamber portion 450B.When actuator means 801 is in the second position, by fluid flow port 420 introduce fluid in pressure chamber 450 now can in proximal seal 720 applying power.
As previously noted, and as described further in Fig. 9, the locking system of this place embodiment also comprises the locking mechanism 850 between outer surface and the inner surface of outer tubular member 120 being arranged on inner tubular member 110.Locking mechanism 850 is positioned at the nearside of actuator means 801 in the present embodiment.Generally speaking, locking mechanism 850 can comprise the main component 851 coupling or be fixed to outer tubular member 120 with outer tubular member 120, as described in detail later.Locking mechanism also comprises lock bolt 862, this lock bolt 862 have engagement state as depicted in fig. 9 and substantially as Figure 12 the disengaged position described, and to will be further described below.
The object unrestricted for diagram, referring now to Figure 11 A to Figure 11 E, these figure depict the exemplary embodiment of the locking mechanism of disclosed theme.Generally speaking, as what describe in the perspective view of Figure 11 A, locking mechanism 850 comprises the cylindrical body member 801 with recess 852 and at least one lock bolt 863 extended from main component 801.Figure 11 B depicts the side view of the locking mechanism 850 of Figure 11 A, and Figure 11 C is the front view of the locking mechanism of Figure 11 A.Such as, and as shown in the best in Figure 11 A and Figure 11 C, locking mechanism 850 is included in three lock bolts 863 that are that main component 851 ambient separation separates and that distad extend from main component 851 herein.Figure 11 D is the cross section of the locking mechanism of Figure 11 B of cross-line 11D-11D, and Figure 11 E is the detail view of the locking mechanism of Figure 11 D around online 11E.As in Figure 11 B and Figure 11 D describe, each lock bolt 863 can be formed by having the cantilever etc. linking up with protruding 863A at least in part.As Figure 11 E describe, the far-end of the protruding 863A of each hook has the angled faces treating to be engaged by the cam segment of actuator means.Angled faces can be any suitable angle [alpha], such as, such as, between 0 ° and 60 °.
Referring again to Fig. 9, main component 851 comprises the recess 852 in the outer surface being limited to main component 851, with auxiliary, locking mechanism 850 is fixed to outer tubular member 120.At assembly process, locking mechanism can couple or be fixed to outer tubular member 120 with outer tubular member 120.Such as, outer tubular member 120 can be contained in recess 852, forms groove 854 with the part of the outer surface along outer tubular member 120.Filler 855 can be arranged in the groove 854 in recess 852 of outer tubular member 120, outer tubular member 120 to be coupled to the main component 851 of locking mechanism 850.And, filler can be provided with other hoop intensity, so that this part outer tubular member is fixed in the recess of locking mechanism, as assigned in AbbottCardiovascularSystemsInc. company and the title submitted on the same day with the application is disclosed during to be " CatheterHavingMovableTubularStructure " current pending application, its content is all being incorporated to herein by reference.Locking mechanism can dock with the outer tubular member be folded in therebetween by filler, grasps to create and locks.
Filler can be to provide enough hoop intensity with any suitable material outer tubular member and locking mechanism coupled.Such as, filler can comprise at least one in nylon, fluoropolymer (such as, Kynar), PEEK, resin, platinoiridita, pottery and metal (such as, metal tape etc.).According to the particular aspects of disclosed theme, filler can comprise the material be used for the material binding of outer tubular member.Such as, the material of filler can comprise the material identical with outer tubular member.The compatibility of filler and outer tubular member achieves thus and more firmly locks between outer tubular member and locking mechanism, even if outer tubular member is not compatible with locking mechanism heat.In addition, the increase of the outer tubular member bondd with recess and the thickness of filler provides monolayer material intensity not to be covered itself.In addition, by heat bonding, the basic continous surface of adjacent outer tubular member and filler is provided, to eliminate the area or edge that may block when system is advanced or exited from vascular system.In addition, the locking created by filler provides the intensity of the integrity for maintaining parts of vessels.Filler can be bondd by heat thus, heat bonding, viscose glue bonding etc., and by the crimping of suitable material binding agent or die forging, and be bonded to outer tubular member.
Referring again to Fig. 9, locking system also can comprise the sleeve 865 being coupled to inner tubular member 110.Sleeve 865 is arranged between inner tubular member 110 and locking mechanism 850, and limits flange or trip edge at its far-end.As depicted in fig. 9, the protruding 863A of the hook of lock bolt 863 is configured to when being under engagement state and the edge join of sleeve 865.Alternative arrangement can be provided on inner tubular member to form trip edge, to be engaged by lock bolt.Such as, inner tubular member can be provided in ring or projection, or, slit can be limited in the outer surface of inner tubular member.For sleeve, any suitable material can be used.
Figure 12 shows the embodiment of theme, and lock bolt 863 is in disengaged position.When as previously described actuator means 801 being moved to the second position, the cam segment 801B of actuator means 801 engages with lock bolt 863.Utilize the power of the cam 801B of movement on proximal direction P, owing to acting on the impact of the hydraulic pressure on the seal section of actuator means 801, so lock bolt 863 is moved to disengaged position by cam segment 801B, and unclamping sleeve or other trip edges thus, moving in a proximal direction subsequently for making outer tubular member.
In the fig. 12 embodiment, for the object of diagram, substitute sleeve with the slit 117 be limited in the outer surface of inner tubular member 110.In the present embodiment, lock bolt 863 engages with slit 117 when in the engaged state.As Figure 12 embodiment to be described, when actuator means 801 is shifted to the second position, cam segment 801B and the lock bolt 863 of actuator means 801 depart from, and to unclamp outer tubular member, realize by acting on fluid pressure in proximal seal moving subsequently in a proximal direction.
Locking mechanism can be made up of any suitable biocompatible material or comprise any suitable biocompatible material, such as, and PEEK.Because outer tubular member directly locking mechanism will be bonded to, so locking mechanism (and, more specifically, the main component of locking mechanism) material be not used for the material heat bonding of outer tubular member can be comprised.So, for locking mechanism, be advantageously made up of the suitable material with the fusion temperature higher than the fusion temperature of outer tubular member and/or filler.Thus, even if when applying heat energy or heat to locking mechanism place area, locking mechanism also can maintain its structural intergrity.If desired, locking mechanism also can comprise PTFE liner or other low friction or smooth layer.
According to the another aspect of disclosed theme, provide a kind of method launching conduit, the method comprises: among other things, provides as before at conduit described above.The method is also included the position setting device (such as, support) in distal seal distally between the outer surface of tubular element and the inner surface of outer tubular member.Device (such as, support) depends on required indication (such as, cardiovascular is got involved or periphery intervention) along the position of conduit.By fluid flow port, fluid is introduced in pressure chamber, to move towards the second position to make actuator means and make the latch displacement of locking mechanism to disengaged position.When actuator means is in the second position and lock bolt is under disengaged position, is introduced by fluid flow port and be incorporated into the applying power in the proximal seal of pressure chamber of the fluid in pressure chamber, to actuate outer tubular member in a proximal direction.Owing to being actuate outer tubular member in a proximal direction, so support is exposed and is deployed in the tube chamber system of patient.When stent, conduit is exited from tube chamber system.About the other details of the method and feature will be described by explanation above and/or understand, or be incorporated to by reference herein.
According to the embodiment of the theme described before, the parts of conduit can be made up of multiple suitable material.Such as, inflatable chamber configuration proximal seal and distal seal can be formed by any suitable material.Only for example, sealing member can be rubber or silicon.In the embodiment with inflatable pressure chamber, sealing member can be formed by the low-hardness tester rubber with compressive state and swelling state.Sealing member can compress significantly in initial sending in configuration and be out of shape, and when pressurizeing to pressure chamber, is transitioned into swelling state.Alternately, sealing member can be made by the hydrophilic polymer by the fluid be absorbed in pressure chamber and along outer tubular member expansion.Alternately, proximal seal and distal seal can be made up of hydrophobic material.
Inner tubular member and outer tubular member can be the assembly of one chip structure or parts respectively, and can be made up of any suitable material.Such as, suitable material includes but not limited to polymeric material, such as, the polyethylene of nylon, urethane, polyurethane, PEEK, PTFE, PVDF, fluoropolymer (such as, Kynar), PE, HDPE, trilaminate material (comprising L25), Plexar, PEBAX or multiple proper density.In one example, outer tubular member comprises the knit nylon pipe had inside PTFE.Smooth liner (such as, PTFE) on the internal diameter of outer tubular member or pipe sheath allows to carry out stent with less power, and outer tubular member can be prevented to be bonded to support or other parts of vessels.In another example, outer tubular member comprises the fluoropolymer braided tube with smooth liner.And, can being made up of alloy or metal material at least partially of inner tubular member and/or outer tubular member, such as, rustless steel hypodermic tube etc.
As another replacement scheme, inner tubular member and/or external member can be made up of multiple outer tubular member respectively.Retainer can form the joint for two adjacent tubular member further.Outer tubular member can be made up of the complex or fiber-reinforced composites (such as, fiber reinforced resin material or braided material) that comprise the multiple different materials of preparation (such as, the co-extrusion of different polymer) further.Only for example, exemplary embodiment can comprise the braided tube with PTFE liner, and polyamide intermediate layer and the Pebax72D with fabric are outer.In addition, in order to improve pliability, spiral type or the configuration of spirally component can be used when forming inner tubular member and outer tubular member.
Representative configuration for outer tubular member comprises: monolayer polyimides or PEEK; The trilaminate material of L25, Plexar, HDPE; Or there is PTFE liner, there is the polyimides intermediate layer of fabric and the outer field braided tube of Pebax72D.Inner tubular member and/or outer tubular member also can be strengthened by adding reinforcement, and such as, such as, silk is rolled up.In one embodiment, inner tubular member is strengthened by adding reinforcement along the length corresponding with pressure chamber.
Further contemplate that, inner tubular member and outer tubular member can be made up of other biological compatible material.So, the inner tubular member of conduit and outer tubular member can be made up of the combination of above-mentioned polymer, these polymer or blend, no matter are combine individually or with other materials or other biological absorbable material.
Inner tubular member and outer tubular member can manufacture by using multiple known technology, such as, but be not limited to, extruding, injection moulding, air-blowing, stretch, deep-draw, polymerization, crosslinked, by solution impregnation, powder deposition, sintering, Electrospun, melt spinning, temperature deformation, stretch blow, by above-mentioned any combination with strengthen element (such as, metal fabric, coil, glass fibre, organic or the inorfil of carbon fiber and other types, liquid catalyst) carry out chemical graft, and the Machining Technology of classics (such as, milling, boring, grinding etc.).When hardware (such as, hypotube) will be comprised, various metals manufacturing technology can be used, such as, but be not limited to, machining, tube-pulling craft, boring, milling, EDM, other deformation methods, plating, sputtering, electric grafting, sintering and deposition, etc.In an embodiment of disclosed theme, inner tubular member at least comprises rustless steel hypotube in its proximal end.
In addition, inner tubular member and outer tubular member can be made up of PE, polypropylene, Kynar or urethane extruding work by using extruder (extruder such as, can buied from numerous known suppliers).Can carry out these materials of post processing according to numerous mode, these modes comprise: be only for example and not limitation, extruding, molding (such as, injection mo(u)lding or dip forming), textile processing (such as, weaving or braiding) and shaping.Can suitable forming technology be sheet material is rolled and welds or vacuum forming be tubulose formed, slightly lift a few example.
If desired, inner tubular member and outer tubular member can utilize paint-on technique to scribble any one in multiple material to strengthen its performance further, be included in by all patented subject matter (such as, United States Patent (USP) the 6th, 541 of AbbottLaboratories, No. 116, United States Patent (USP) the 6th, 287, No. 285, United States Patent (USP) the 6th, 541, No. 116) under numerous suitable coating and paint-on technique, the full content of these patents is incorporated to herein by reference.Such as, possible coating material comprises lubricious material (such as, Teflon) and hydrophobic material (such as, silicones dispersed lubricant PN4097) or water wetted material (such as, hydrogel) or lubricious.
Inner tubular member and outer tubular member can have any suitable shape of cross section, comprise ellipse, polygon or prismatic, although general circular cross section.Inner tubular member and outer tubular member also can have any suitable size and diameter, and this depends on required application.The size to fit ground of conduit designs and is configured at the corresponding body intraluminal delivery for set indication, such as, for the vascular system that blood vessel is got involved.
As here embodied, outer tubular member can comprise skin and internal layer.Outer tubular member can be provided with and be attached to or be formed with outer field internal layer.Internal layer or liner can comprise lubricious material, to promote the outer tubular member slip in a proximal direction when making outer tubular member retract.Such as, dissimilar polymer (such as, PTFE) or any fluoropolymer and high density polyethylene (HDPE) (HDPE) may be used for internal layer or apply up and down.In addition, other smooth polymeric can be used.As here embodied, skin provides enough intensity, to be captured in skin by medical treatment device, and realizes movement between the first location and the second location.Multiple layer can be individually formed, and bonding or to be bonded together or co-extrusion is single component.
In addition, according to disclosed theme, outer tubular member can comprise the enhancement Layer be arranged between skin and internal layer, such as, and braided material.Such as, the form such as enhancement Layer stainless steel tube that can weave provides.Fabric can comprise the filament flattened, instead of has the filament of circle cross-section.Alternately, enhancement Layer can be the form of pipe, and this pipe comprises plant or suitably directed filament, such as, wraps in the carbon fiber in polymeric matrices.Equally, during manufacture process, this reinforcing fibre additionally or is alternately included in internal layer and/or skin.
When outer tubular member is provided with internal layer, skin and enhancement Layer, outer tubular member can be formed in the following way.First, form internal layer by tubular extrusion technique, and internal layer is arranged on around shaping mandrel (not shown).As here embodied, shaping mandrel has the shape corresponding with the required form of the inside of outer tubular member.Next, can be positioned on the predetermined length of internal layer by the enhancement Layer that provides of rustless steel braided material form.Next, extruding is outer, and skin is positioned at outer on enhancement Layer can the form of two independent tubular elements providing, and these two independent tubular elements overlap on enhancement Layer slightly in their end.Outer field each part can be select the different materials in order to provide different hardness meter as described above.Outer field two parts can be overlapping a certain amount of, such as, close to 0.1 inch.Next, the sleeve of material contracting with heat is positioned on whole outer tubular member assembly.Finally, heat is executed to this assembly.When executing heat, pyrocondensation syringe shrinks, and internal layer is fused with outer, thus is trapped in therebetween by enhancement Layer.Heating process also makes internal layer consistent with the shape of shaping mandrel.After assembly cooling, cut away pyrocondensation syringe, retain outer tubular member.
Although be described disclosed theme by certain preferred embodiment, it will be recognized by one skilled in the art that when not departing from the scope of this theme herein, multiple amendment and improvement can be carried out to disclosed theme.Other feature as known in the art can be included in equally, disclosed in such as in No. the 7th, 799,065, the United States Patent (USP) of Pappas, the full content of this patent is incorporated to herein by reference.Moreover, although can to discuss or in this embodiment but not the independent feature of an embodiment shown in the drawings of disclosed theme of other embodiments herein, but it should be obvious that, the independent feature of an embodiment can with one or more feature of another embodiment or the characteristics combination from multiple embodiment.
Except except multiple embodiments of describing and requiring, disclosed theme also relates to other embodiments of any other possible combination with feature that is disclosed herein and that require.So, in the scope of disclosed theme, the special characteristic herein proposed can according to other mode combinations with one another, thus make disclosed theme comprise any suitable combination of feature disclosed herein.And, although run through the disclosure to have references to support, also other suitable device and implants can be sent by using conduit disclosed herein and system.Thus, for diagram and the object of explanation, the aforementioned explanation of the specific embodiment of disclosed theme has been proposed.Be arranged in exhaustive or disclosed theme is limited to these disclosed embodiments.
It will be apparent to those skilled in the art that in the spirit not departing from disclosed theme or scope, multiple amendment and modification can be carried out to the method and system of disclosed theme.Thus, disclosed theme is intended to make to be included in amendment in the scope of appended claims and equivalent thereof and modification.

Claims (23)

1. a conduit, comprising:
Have the inner tubular member of close end, distal portion and outer surface, described inner tubular member also has the fluid cavity be limited to wherein, and described fluid cavity has the fluid flow port that the distal portion along described inner tubular member is limited by described outer surface;
Relative to the moveable outer tubular member of described inner tubular member, described outer tubular member has the inner surface of near-end, far-end and the outer surface towards described inner tubular member;
From the inner surface of described outer tubular member towards the proximal seal that the outer surface of described inner tubular member extends, described proximal seal is positioned at the nearside of described fluid flow port;
From the outer surface of described inner tubular member towards the distal seal that the inner surface of described outer tubular member extends, described distal seal is positioned at the distally of described fluid flow port;
By the pressure chamber that the outer surface of described proximal seal, described distal seal, described inner tubular member and the inner surface of described outer tubular member limit;
Be arranged on the actuator means in described pressure chamber, described actuator means has seal section and cam segment, described actuator means is removable between the first location and the second location, wherein, introduced by described fluid flow port and the fluid applying power on described seal section be incorporated in described pressure chamber, shift to the described second position to make described actuator means from described primary importance; And
Be arranged on the locking mechanism between the outer surface of described inner tubular member and the inner surface of described outer tubular member, described locking mechanism comprises lock bolt, described lock bolt has and prevents described outer tubular member relative to the engagement state of described inner tubular member movement and allow described outer tubular member relative to the disengaged position of described inner tubular member movement, when described actuator means moves on to the described second position, described lock bolt is moved to described disengaged position by described cam segment
Wherein, when described actuator means is in the described second position and described lock bolt is in described disengaged position, introduced by described fluid flow port and the fluid applying power in described proximal seal be incorporated in described pressure chamber, to actuate described outer tubular member in a proximal direction.
2. the conduit according to aforementioned claim, is characterized in that, described locking mechanism comprises main component, and described lock bolt is limited by the arm extended from described main component at least in part.
3. according to conduit in any one of the preceding claims wherein, it is characterized in that, described locking mechanism comprises the sleeve being coupled to described inner tubular member, and wherein, described lock bolt is when being in described engagement state and described engages.
4. according to conduit in any one of the preceding claims wherein, it is characterized in that, when described actuator means shifts to the described second position, the cam segment of described actuator means makes described lock bolt and described sleeve depart from.
5. according to conduit in any one of the preceding claims wherein, it is characterized in that, slit is limited in the outer surface of described inner tubular member, and described lock bolt engages with described slit when being in described engagement state.
6. according to conduit in any one of the preceding claims wherein, also comprise stopper element, described stopper element is arranged between described outer tubular member and described inner tubular member, to limit the described primary importance of described actuator means relative to described fluid flow port.
7. according to conduit in any one of the preceding claims wherein, it is characterized in that, described stopper element comprises relative to the moveable sleeve of described outer tubular member.
8. according to conduit in any one of the preceding claims wherein, it is characterized in that, described actuator means shifts to the described second position from described primary importance in described proximal direction.
9. according to conduit in any one of the preceding claims wherein, it is characterized in that, when described actuator means is in described primary importance, the seal section of described actuator means and described stopper element are formed and seal, to limit distal chamber portion and proximal chamber portion in described pressure chamber.
10. according to conduit in any one of the preceding claims wherein, it is characterized in that, when described actuator means moves with the described sealing destroyed therebetween from described stopper element in described proximal direction, described distal chamber portion and described proximal chamber portion fluid communication with each other.
11., according to conduit in any one of the preceding claims wherein, is characterized in that, described locking mechanism comprises the main component being fixed to described outer tubular member.
12. according to conduit in any one of the preceding claims wherein, it is characterized in that, described main component has the recess be limited in its outer surface, described outer tubular member is received in described recess and forms groove with a part for the outer surface along described outer tubular member, described groove has the filler be arranged on wherein, described outer tubular member to be coupled to the main component of described locking mechanism.
13., according to conduit in any one of the preceding claims wherein, is characterized in that, described filler comprises at least one in nylon, fluoropolymer, peek, epoxy resin, platinoiridita, pottery and metal.
14., according to conduit in any one of the preceding claims wherein, is characterized in that, described filler comprises the material compatible for the heat bonding of the material with described outer tubular member.
15., according to conduit in any one of the preceding claims wherein, is characterized in that, described filler comprises suitable hoop intensity, described outer tubular member to be coupled in the recess of described main component.
16., according to conduit in any one of the preceding claims wherein, is characterized in that, described main component comprises the inconsistent material of heat bonding for the described material with described outer tubular member.
17., according to conduit in any one of the preceding claims wherein, is characterized in that, described locking mechanism comprises the biocompatible material with the fusion temperature higher than described filler.
18., according to conduit in any one of the preceding claims wherein, is characterized in that, described outer tubular member comprises the fluoropolymer braided tube of the knit nylon pipe with PTFE liner or the smooth liner with such as PTFE and so on.
19., according to conduit in any one of the preceding claims wherein, is characterized in that, described inner tubular member also comprises the guidewire lumen be limited to wherein.
20. according to conduit in any one of the preceding claims wherein, also comprises and is arranged on the carrier base in described pressure chamber distally and be positioned at the support at described carrier base place along described inner tubular member.
21., according to conduit in any one of the preceding claims wherein, is characterized in that, the far-end of described inner tubular member also comprises the distal end in the distally being arranged on described carrier base.
22. according to conduit in any one of the preceding claims wherein, also comprise at least one moveable tubular structure, at least one moveable tubular structure described is coupled to described outer tubular member and is arranged at least one place in the near-end of described outer tubular member or the far-end of described outer tubular member.
23. 1 kinds of methods launching conduit, comprising:
There is provided conduit, it comprises:
Have the inner tubular member of close end, distal portion and outer surface, described inner tubular member also has the fluid cavity be limited to wherein, and described fluid cavity has the fluid flow port that the distal portion along described inner tubular member is limited by described outer surface,
Relative to the moveable outer tubular member of described inner tubular member, described outer tubular member has the inner surface of near-end, far-end and the outer surface towards described inner tubular member,
From the inner surface of described outer tubular member towards the proximal seal that the outer surface of described inner tubular member extends, described proximal seal is positioned at the nearside of described fluid flow port,
From the outer surface of described inner tubular member towards the distal seal that the inner surface of described outer tubular member extends, described distal seal is positioned at the distally of described fluid flow port,
By the pressure chamber that the outer surface of described proximal seal, described distal seal, described inner tubular member and the inner surface of described outer tubular member limit,
Be arranged on the actuator means in described pressure chamber, described actuator means has seal section and cam segment, described actuator means is removable between the first location and the second location, wherein, introduced by described fluid flow port and the fluid applying power on described seal section be incorporated in described pressure chamber, to make described actuator means shift to the described second position from described primary importance, and
Be arranged on the locking mechanism between the outer surface of described inner tubular member and the inner surface of described outer tubular member, described locking mechanism comprises lock bolt, described lock bolt has and prevents described outer tubular member relative to the engagement state of described inner tubular member movement and allow described outer tubular member relative to the disengaged position of described inner tubular member movement, when described actuator means moves on to the described second position, described lock bolt is moved to described disengaged position by described cam segment;
Setting device between the outer surface of described inner tubular member and the inner surface of described outer tubular member is in the position in described distal seal distally; And
By described fluid flow port by fluid introduce and be incorporated in described pressure chamber, the described second position is shifted to make described actuator means, and make the latch displacement of described locking mechanism to described disengaged position, wherein, when described actuator means is in the described second position and described lock bolt is in described disengaged position, introduced by described fluid flow port and the fluid applying power in described proximal seal be incorporated in described pressure chamber, to actuate described outer tubular member in a proximal direction.
CN201380074601.0A 2013-03-12 2013-03-12 Conduit with hydraulic actuator and locking system Expired - Fee Related CN105228562B (en)

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JP2016514003A (en) 2016-05-19
WO2014142808A1 (en) 2014-09-18
CN107744418B (en) 2020-07-10
CN105228562B (en) 2017-12-22
CR20150528A (en) 2016-04-07
CN107744418A (en) 2018-03-02
JP6172779B2 (en) 2017-08-02

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