CN106308986A - A catheter handle used for an implant conveying system - Google Patents
A catheter handle used for an implant conveying system Download PDFInfo
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- CN106308986A CN106308986A CN201510378688.1A CN201510378688A CN106308986A CN 106308986 A CN106308986 A CN 106308986A CN 201510378688 A CN201510378688 A CN 201510378688A CN 106308986 A CN106308986 A CN 106308986A
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- slider
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- slide
- induction system
- modular catheter
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Abstract
The invention provides a catheter handle used for an implant conveying system. The catheter handle comprises a slide shaft, a front slide and a rear slider, and rear handle. The slide shaft is a hollow tubular component provided with at least one axial slot; the slide shaft has a proximal end and a distal end; the front slider and the rear slider are arranged in the slide shaft and are in slide connection with the slide shaft; the front slider is close to the distal end of the slide shaft; each of the front slider and the rear slider is provided with a middle hole allowing penetration of a push tube; an elastic part is arranged between the front slider and the rear slider; the portion, passing the axial slots, of the rear slider is provided with a first transmission mechanism; the rear handle is rotatably arranged on the outer portion of the slide shaft; the inside of the rear handle is provided with a second transmission mechanism which matches and engages with the first transmission mechanism on the rear slider. Under the control of the catheter handle used for an implant conveying system, such implants as stents can be released at focus parts accurately; the risk of dirt hiding is avoided; the handholding comfort level is increased; the formation of air thrombi can be effectively avoided.
Description
Technical field
The present invention relates to the field of Micro trauma interventional medical device, particularly relate to a kind of leading for implant induction system
Pipe handle.
Background technology
Micro trauma is got involved operation and is referred to, under various image documentation equipments guide, utilize the interposers such as conduit, support, seal wire
Tool, completes the treatment of pathological changes in blood vessel or cavity.Implement Micro trauma interventional therapy and depend on the implantation of various Micro trauma
Thing, including support, stopper, artificial valve etc..Support in Micro trauma implant generally includes balloon expandable
Type and self-expanding two kinds, self-expanding support is strong due to its non-deformability, is applied to blood vessel more and more
The interventional therapy of the Ink vessel transfusing diseases such as narrow, hemangioma, the particularly treatment to frequent moving part vascular lesion,
Such as cervical region, leg etc.；Self-expanded stent has shape memory, and at normal body temperature, it can be expanded automatically
Returning to be sized, and have certain radial direction support strength, Self-expanded stent is by compressing loading in advance
The sheath pipe of induction system leading portion, after arriving focus, recession sheath pipe carries out support release and completes to get involved operation.
The induction system being fed from expandable stent on market in intracavity or blood vessel has coaxial-type and fast-swap two kinds
Structure.Owing to having the strongest radial direction support force when Self-expanded stent is compressed to small diameter, either coaxial-type is defeated
Sending system or fast-swap induction system, it all has bigger unlocking resistance when dropping back sheath pipe release support.
And traditional coaxial-type and fast-swap induction system are all under the guide of guiding wire, induction system will be from expanding
Open support and be transported to blood vessel lesions position, by fixing push rod position, pull recession sheath pipe and discharge support.This
Plant rate of release under delivery mode to be difficult to control to, the most easily occur that support front jumping causes support location inaccurate,
I.e. due to the effect of Self-expanded stent its own resilient, during release, support leading portion ejects the most rapidly a part.
Be born in recent years a kind of by the way of mechanical movement, control rate of release thus realize accurately release from
The modular catheter of expandable stent induction system.As Chinese patent application CN201180023910.6 relates to a kind of for
The modular catheter of prosthesis delivery system, this modular catheter allows to operate this delivery system with a hands, meanwhile,
Degree of accuracy is kept when body intraluminal delivery and expansion support.But the modular catheter in this patent has the cunning of thread outer surface
Axle, outer surface easily conceals dirt and the problem of feel discomfort with the presence of screw thread；Meanwhile, this modular catheter patent does not has
Have show its have can for liquid by with discharge induction system inner air device, and if inside induction system
Air enter before human body in induction system and be not discharged, there is the risk forming air thrombosis.
Summary of the invention
The technical problem to be solved is to provide a kind of modular catheter for implant induction system, especially
Being the induction system for Self-expanded stent, modular catheter can control the accurate release of support, and avoids air thrombosis
Formation, additionally it is possible to avoid concealing the risk of dirt and comfort level held in lifting.
The present invention solves that above-mentioned technical problem employed technical scheme comprise that offer is a kind of for implant delivery system
The modular catheter of system, wherein, including slide-bar, described slide-bar is the hollow tubular being provided with at least one axial slots
Component, described slide-bar has proximally and distally；Front-slider and rear slider, described front-slider and rear slider are arranged on institute
State in slide-bar and slide with described slide-bar and be connected, described front-slider near the far-end of described slide-bar, described front-slider with
Be provided with in rear slider for push pipe through mesopore, be provided with elastomeric element between described front-slider and rear slider,
At described axial slots, it is provided with the first drive mechanism on described rear slider；Back handle, described back handle can turn
It is arranged on the outside of described slide-bar, being internally provided with and the first transmission on described rear slider of described back handle dynamicly
Mechanism match engagement the second drive mechanism.
Further, the inner surface of described slide-bar is provided with at least one row's chisel teeth, on described front-slider and rear slider
Being fixedly installed shell fragment, described front-slider is connected with the chisel teeth in described slide-bar by described shell fragment with rear slider.
Further, the outside of described slide-bar is provided with snap ring, and described snap ring is rotationally connected with described back handle, institute
State snap ring with the rotation of described back handle and/or to move axially and be axially moveable, and described snap ring and described front-slider
It is connected.
Further, described front-slider is additionally provided with side opening, and described side opening connects with the mesopore of described front-slider；Institute
State side opening to be communicated by the outside of described axial slots with described slide-bar.
Further, described snap ring is provided with card annular distance, and described card annular distance is connected with the side opening of described front-slider.
Further, also including tube for transfusion, one end of described tube for transfusion is through described card annular distance and described front-slider
Side opening is connected, and the other end of described tube for transfusion connects infusion set.
Further, it is provided with check valve between described tube for transfusion and described infusion set.
Further, described first drive mechanism is the external screw thread being arranged on rear slider；Described external screw thread passes through institute
State axial slots and extend out to the outside of described slide-bar；Described second drive mechanism be meshed with described external screw thread in
Screw thread.
Further, being fixedly installed threaded fasteners inside described back handle, described threaded fasteners is with interior
The hollow member of screw thread, described slide-bar engages through described threaded fasteners and described female thread with described external screw thread.
Further, axially disposed between the female thread of described threaded fasteners have a non-threaded band, described outside
Screw thread is disengaged from described female thread at described non-threaded band.
Further, described elastomeric element is spring.
Further, also include that front hand grip, described front hand grip are arranged on the far-end of described slide-bar.
Further, the near-end of described slide-bar is provided with boss, is additionally provided with tail end set outside the near-end of described slide-bar
Cylinder, described tail end sleeve is provided with press device, and the position of described press device is corresponding with described boss.
Further, described modular catheter being additionally provided with safety lock, described safety lock is by the snap close on back handle
It is arranged at the lockhole of described slide-bar, described safety lock is provided with the buckle matched with described lockhole, described card
Buckle cooperation to be arranged on described lockhole.
Further, described safety lock being provided with being unlocked by pressing device, described being unlocked by pressing device is for by described
Safety lock takes out from described modular catheter.
Further, the smooth outer surface of described slide-bar is smooth.
The present invention contrasts prior art a following beneficial effect: the present invention provide for implant induction system
Modular catheter, by slide-bar being arranged to outer surface smoother structure, and in back handle ingenious arrange front-slider and after
Slide block, the external screw thread on rear slider and the coupling engagement of the female thread on back handle female thread fixture, in release process
In, front-slider progressively moved to slide-bar near-end under the pulling of back handle, and meanwhile, front-slider pulls outer sheath
Move to slide-bar near-end, and the implants such as support keep static under the effect pushing pipe；When being coated on stent outer
Outer sheath gradually disengage after, stent expansion come and blood vessel wall laminating.At the support release initial stage, rotating back handle can
To accurately control support rate of release, it is ensured that support off-position is accurate；When support is released certain length
After, back handle being quickly pulled to slide-bar near-end, support is completely released rapidly, shortens operating time.Therefore,
The present invention provide under the control of the modular catheter of implant induction system, the implant such as support can be accurate
It is released in lesions position；Modular catheter is outside smooth simultaneously, it is to avoid conceals the risk of dirt improving and holds easypro
Appropriateness；The modular catheter that particularly present invention provides is provided with can be for liquid by discharging induction system inner air
Device, induction system use before can discharge inner air, be prevented effectively from the formation of air thrombosis.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention medium-height trestle induction system；
Fig. 2 is the structural representation that in the embodiment of the present invention, front hand grip is connected with slide-bar；
Fig. 3 is the structural representation in the embodiment of the present invention；Wherein Fig. 3 (a) is the schematic cross section of front-slider；
Fig. 3 (b) is the overall structure schematic diagram of front-slider；
Fig. 4 is the structural representation of air displacement unit in the embodiment of the present invention；
Fig. 5 is the structural representation of shell fragment in the embodiment of the present invention；
Fig. 6 is the structural representation of threaded fasteners in the embodiment of the present invention；
Fig. 7 is handle inner attachment structure schematic diagram in the embodiment of the present invention；
Fig. 8 is threaded fasteners and the structural representation of back handle in the embodiment of the present invention；
Fig. 9 is snap ring and the attachment structure schematic diagram of back handle in the embodiment of the present invention；
Figure 10 is modular catheter internal structure schematic diagram in the embodiment of the present invention；
Figure 11 is tail end sleeve fastening structure schematic diagram in the embodiment of the present invention；Wherein Figure 11 (a) is slide-bar tail end
Structural representation；Figure 11 (b) is tail end tube-in-tube structure schematic diagram；
Figure 12 is that in another embodiment of the present invention, the secure latch on modular catheter installs decomposing schematic representation；
Figure 13 is the structural representation of another embodiment of the present invention medium-height trestle induction system.
In figure:
1000 modular catheter 1010 front hand grip 1020 snap rings
1021 card annular distance 1030 tube for transfusion 1040 check valves
1050 back handle 1051 back handle bearing 1052 snap closes
1060 threaded fasteners 1061 threaded fasteners bearing 1062 female threads
1063 non-threaded band 1070 front-slider 1071 mesopores
1072 side opening 1073 shell fragment bearing 1080 rear sliders
1081 rear slider external screw thread 1090 shell fragment 1100 springs
1110 slide-bar 1111 slit 1112 chisel teeths
1113 slide-bar far-end 1114 slide-bar near-end 1115 boss
1116 lockhole 1120 tail end sleeve 1121 press devices
1130 safety lock 1131 buckle 1132 being unlocked by pressing devices
1140 tail end fixture 1160 stress spread pipe 2000 supports
3000 outer sheath 6000 push pipe 6010 boost tube
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Refer to Fig. 1 and Figure 10, the modular catheter 1000 for implant induction system that the embodiment of the present invention provides
By front hand grip 1010, snap ring 1020, tube for transfusion 1030, check valve 1040, back handle 1050, threaded fasteners
1060, front-slider 1070, rear slider 1080, shell fragment 1090, spring 1100, slide-bar 1110 and tail end sleeve 1120
Composition.Slide-bar 1110 is that smooth outer surface is smooth and hollow tubular member with an axial slots 1111, sliding
The inner surface of axle 1110 has at least one row's chisel teeth 1112.
Referring to Fig. 2, slide-bar has near-end 1114 and far-end 1113, and front hand grip 1010 is arranged on slide-bar far-end 1113,
Modular catheter 1000 is gripped during for operating.
Referring to Fig. 3, Fig. 5 and Fig. 7, shell fragment 1090 is fixed on the both sides of front-slider 1070.Front-slider 1070
It is arranged on slide-bar 1110 inside and is connected with the chisel teeth 1112 in slide-bar 1110 by shell fragment 1090, front-slider
1070 near slide-bar far-end 1113.It is preferred that front-slider 1070 is with mesopore 1071 and side opening 1072, mesopore
1071 connect with side opening 1072；Side opening 1072 extend out to slide-bar 1110 by the axial slots 1111 of slide-bar 1110
Outside, one end of mesopore 1071 penetrates for pushing pipe 6000, fixing connection outer sheath in the other end of mesopore 1071
3000。
Referring to Fig. 3, Fig. 4, Fig. 9 and Figure 10, snap ring 1020 is arranged on outside slide-bar 1110 and and front-slider
1070 are connected.Snap ring 1020 is provided with card annular distance 1021, card annular distance 1021 and the side opening 1072 of front-slider 1070
It is connected.Tube for transfusion 1030 has two ends, and one end connects through the side opening 1072 of card annular distance 1021 with front-slider 1070
Connecing, the other end is connected with check valve 1040.
Referring to Fig. 7 and Fig. 9, the rear slider 1080 in the present embodiment, as front-slider 1070, is provided with for pushing away
The mesopore that pipe 6000 passes, rear slider 1080 is sent to be arranged on slide-bar 1110 inside and by shell fragment 1090 and slide-bar
Chisel teeth 1112 in 1110 is connected, and rear slider 1080 is near slide-bar near-end 1114, front-slider 1070 and rear cunning
Being provided with elastomeric element such as spring 1100 between block 1080, rear slider 1080 is with external screw thread 1081；External screw thread 1081
It extend out to slide-bar 1110 outside by the axial slots 1111 of slide-bar 1110.
Referring to Fig. 6, threaded fasteners 1060 is the hollow member with female thread 1062, female thread 1062 it
Between axially disposed have a non-threaded band 1063.
Referring to Fig. 7 and Fig. 9, threaded fasteners 1060 is arranged on outside slide-bar 1110 and by female thread 1062
Engage with the external screw thread 1081 of rear slider 1080.
Referring to Fig. 8 and Fig. 9, back handle 1050 is arranged on outside threaded fasteners 1061, and threaded fasteners is fixed
Place 1061 and back handle bearing 1051 correspondence are fixedly linked, the back handle 1050 rotational movement by self
The rotation of threaded fasteners 1061.It is preferred that snap ring 1020 is rotationally connected with back handle 1050, and at back handle
The when of 1050 rotation, snap ring 1020 is not rotated.Snap ring 1020 can in the rotation of back handle 1050 and
/ or the effect that pulls vertically under be axially moveable.
Referring to Fig. 1 and Figure 11, slide-bar near-end 1114 is provided with tail end sleeve 1120, and tail end sleeve 1120 is arranged
There is press device 1121；Slide-bar near-end 1114 is provided with boss 1115, boss 1115 and press device 1121
Position is corresponding.By pressing press device 1121, tail end sleeve 1120 disengages with slide-bar near-end 1114.
Refer to Figure 12 and Figure 13, for the use safety of modular catheter, modular catheter can arrange peace further
Full lock 1130, safety lock 1130 is arranged on the lockhole 1116 of slide-bar 1110 by the snap close 1052 on back handle 1050
Place, safety lock 1130 is provided with the buckle 1131 matched with lockhole 1052, and buckle 1131 tight fit is arranged on
On lockhole 1052.Being provided with being unlocked by pressing device 1132 on safety lock 1130, being unlocked by pressing device 1132 is used for will
Safety lock 1130 takes out from modular catheter, before using modular catheter, presses being unlocked by pressing device 1132 by safety
Lock 1130 can carry out follow-up operation after taking out from modular catheter.
Embodiment 1
By injection mo(u)lding produce stress spread pipe 1160, front hand grip 1010, snap ring 1020, back handle 1050,
Threaded fasteners 1060, front-slider 1070, rear slider 1080, slide-bar 1110, tail end sleeve 1130 and check valve
1040；
Shell fragment 1090 and spring 1100 is produced by machining；
Produce tube for transfusion 1030, outer sheath 3000 by extrusion molding and push pipe 6000；
Nitinol Self-expanded stent 2000 is produced by cut, heat treatment and electrochemical polish；
Using glue bonding with check valve 1040 tube for transfusion 1030 one end, the other end passes through the snap ring of snap ring 1020
Hole 1021 (Fig. 9) uses glue bonding with front-slider 1070 afterwards；One end of outer sheath 3000 is used glue with
Front-slider 1070 is bonding, and Self-expanded stent 2000 compresses the other end in advance that load outer sheath；By propelling movement pipe 6000
It is arranged in the mesopore 1071 of front-slider (Fig. 4)；
Shell fragment 1090 (Fig. 5) use screw is fixed on front-slider 1070, the both sides of rear slider 1080, and
Spring 1100 and the rear slider 1080 installing shell fragment are penetrated propelling movement pipe 6000 (Fig. 7) successively；
Threaded fasteners 1060 and back handle 1050 are threadably secured part bearing 1061, back handle bearing
1051 are fixed together (Fig. 8)；
Successively slide-bar 1110, threaded fasteners 1060, snap ring 1020, back handle 1050 are arranged on front-slider 1070
Outside, and shell fragment 1090 is connected with the chisel teeth 1112 of slide-bar, by front-slider side opening 1072 and after slide
The external screw thread 1081 of block by slit 1111 to the slide-bar of slide-bar outside, wherein at side opening 1072 with snap ring 1020
Connecting, the external screw thread 1081 of rear slider engages (Figure 10) with the female thread 1062 of threaded fasteners；
Front hand grip 1010 is arranged on slide-bar 1110 far-end (Fig. 2), stress spread pipe 1160 is passed through outer sheath
3000 are arranged in front hand grip 1010, use glue to be bonded on tail end fixture 1140 by propelling movement pipe, and tail end is solid
Locking member 1140 is fixed in tail end sleeve 1120, tail end sleeve 1120 is arranged on slide-bar far-end 1114 and guarantees
Press device 1121 and slide-bar boss 1115, at same position (Figure 11), form the support including Self-expanded stent
Induction system (Fig. 1)；
Before operation starts, the syringe that will be filled with normal saline is connected with check valve 1040, by the physiology in syringe
Saline passes through check valve 1040, tube for transfusion 1030, front-slider 1070, pushes between pipe 6000 and outer sheath 3000
Gap, support 2000, finally from rack far end flow out, the air within induction system is completely exhausted out, it is to avoid
The formation of air thrombosis；
In operation process, after support is delivered to lesions position by induction system, a hands grip front hand grip 1010 is solid
Fixed, another hands can rotate back handle 1050 and carry out release operation.Back handle 1050 rotate just start time,
Rear slider 1080 owing to being held static by trying hard to keep between threaded fasteners 1060 and 1,090 two parts of shell fragment, defensive position
Handle 1050 drives front-slider 1070 to move to slide-bar near-end 1114 by snap ring 1020, during movement,
Spring 1100 is compressed；When back handle 1050 rotates to certain position, the external screw thread 1081 of rear slider 1080
Move to the non-threaded band 1063 of threaded fasteners 1060 thus disengage with threaded fasteners 1060, now front-slider
1070 under the dual function of shell fragment 1090 and spring 1100 instantaneous holding static, rear slider 1080 is at spring 1100
Effect under instantaneous move to initial position to slide-bar near-end 1114, complete a motion cycle.At back handle 1050
In the case of the anglec of rotation is certain, the distance that front-slider 1070 moves to slide-bar near-end 1114 is according to female thread 1082
Pitch difference is set and different, concrete, the pitch of female thread 1082 is the biggest, and front-slider 1070 is near to slide-bar
The distance that end 1114 moves is the biggest.According to the setting of external screw thread 1081 with female thread 1082, along with back handle 1050
Rotation, above-mentioned motion cycle can make back handle 1050 the most proximally 1114 move with repeated several times.Releasing
During putting, front-slider 1070 constantly moves to slide-bar near-end 1114 under the pulling of back handle 1050, same with this
Time, front-slider 1070 pulls outer sheath 3000 to move to slide-bar near-end 1114, and support 2000 is pushing pipe 6000
Effect under keep static；After the outer sheath 3000 being coated on stent outer gradually disengages, support 2000 is automatic
Expand and fit with blood vessel wall.At the initial stage of support release process, rotation back handle 1050 can accurately control and prop up
Frame rate of release, it is ensured that support off-position is accurate；After support is released certain length, back handle 1050
Quickly being pulled to slide-bar near-end 1114, support is completely released rapidly, shortens operating time.
After support release, the press device 1121 on pressing tail end sleeve 1120, make tail end sleeve 1120 with
Slide-bar near-end 1114 disengages and drops back tail end sleeve 1120, and propelling movement pipe 6000 is entirely enclosed in outer sheath 3000；?
After, all devices are together withdrawn from human body.
Embodiment 2
By injection mo(u)lding produce stress spread pipe 1160, front hand grip 1010, snap ring 1020, back handle 1050,
Threaded fasteners 1060, front-slider 1070, rear slider 1080, slide-bar 1110, tail end sleeve 1120, check valve
1040；
Shell fragment 1090, spring 1100 is produced by machining；
Produce tube for transfusion 1030, outer sheath 3000 by extrusion molding, push pipe 6000；
Nitinol Self-expanded stent 2000 is produced by cut, heat treatment and electrochemical polish；
Using glue bonding with check valve 1040 tube for transfusion 1030 one end, the other end passes through the snap ring of snap ring 1020
Hole 1021 (Fig. 9) uses glue bonding with front-slider 1070 afterwards；One end of outer sheath 3000 is used glue with
Front-slider 1070 is bonding, and Self-expanded stent 2000 compresses the other end in advance that load outer sheath 3000；To push
Pipe 6000 is arranged in the mesopore 1071 of front-slider (Fig. 4)；
Shell fragment 1090 (Fig. 5) use screw is fixed in front-slider 1070, the both sides of rear slider 1080,
And spring 1100 and the rear slider 1080 installing shell fragment are penetrated propelling movement pipe 6000 (Fig. 7) successively；
Threaded fasteners 1060 and back handle 1050 are threadably secured part bearing 1061, back handle bearing
1051 are fixed together (Fig. 8)；
Successively slide-bar 1110, threaded fasteners 1060, snap ring 1120, back handle 1060 are arranged on front-slider 1070
Outside, and shell fragment 1090 is connected with the chisel teeth 1112 of slide-bar, by front-slider side opening 1072 and after slide
The external screw thread 1081 of block passes through, outside slit 1111 to the slide-bar of slide-bar, to be wherein connected with snap ring 1120 at side opening,
External screw thread engages (Figure 10) with the female thread 1062 of threaded fasteners；
Front hand grip 1010 is arranged on slide-bar 1110 far-end (Fig. 2), and being bonded in by glue by stable pipe 4000 should
It is arranged in front hand grip by outer sheath 3000 on power anemostat 1160 and by stress spread pipe, uses glue to push away
Sending pipe to be bonded on tail end fixture 1140, tail end fixture is fixed in tail end sleeve, by tail end sleeve 1120
It is arranged on slide-bar far-end 1114 and guarantees that press device 1121 and slide-bar boss 1115 are at same position (Figure 11)；
Being arranged at the lockhole 1153 of slide-bar by safety lock 1150 by snap close 1052, buckle 1151 tight fit is pacified
It is contained in (Figure 12) on slide-bar lockhole, forms the stent delivery system (Figure 13) including Self-expanded stent.
Before operation starts, the syringe that will be filled with normal saline is connected with check valve 1040, by the physiology in syringe
Saline passes through check valve 1040, tube for transfusion 1030, front-slider 1070, pushes between pipe 6000 and outer sheath 3000
Gap, support 2000, finally from rack far end flow out, the air within induction system is completely exhausted out, it is to avoid
The formation of air thrombosis.
Safety lock 1150 is taken out from modular catheter 1000 by being unlocked by pressing device 1132.
In operation process, after support is delivered to lesions position by induction system, a hands grip front hand grip 1010 is solid
Fixed, another hands can rotate back handle 1050 and carry out release operation.Back handle 1050 rotate just start time,
Rear slider 1080 is held static owing to trying hard to keep by threaded fasteners 1060 and 1,090 two parts of shell fragment, back handle
1050 drive front-slider 1070 to move to slide-bar near-end 1114 by snap ring 1020, during movement, and spring
1100 are compressed；When back handle 1050 rotates to certain position, the external screw thread 1081 of rear slider 1080 moves to
The non-threaded band 1063 of threaded fasteners 1060 thus disengage with threaded fasteners 1060, now front-slider 1070
Under the dual function of shell fragment 1090 and spring 1100, instantaneous holding is static, and rear slider 1080 is at spring 1100
Instantaneous under effect move to initial position to slide-bar near-end 1114, complete a motion cycle.During release,
Front-slider 1070 constantly moves to slide-bar near-end 1114 under the pulling of back handle 1050, meanwhile, and front-slider
1070 pull outer sheath 3000 to move to slide-bar near-end 1114, and support 2000 is under the effect pushing pipe 6000
Keep static；After the outer sheath 3000 being coated on stent outer gradually disengages, support 2000 automatic expansion comes
Fit with blood vessel wall.At the support release initial stage, rotate back handle 1050 and can accurately control support rate of release, really
Protect support off-position accurate；After support is released certain length, back handle 1050 is quickly pulled to sliding
Axle near-end 1114, support is completely released rapidly, shortens operating time.
After support release, the press device 1121 on pressing tail end sleeve 1120, make tail end sleeve 1120 with
Slide-bar near-end 1114 disengages and drops back tail end sleeve 1120, and propelling movement pipe 6000 is entirely enclosed in outer sheath 3000；?
After, all devices are together withdrawn from human body.
To sum up, the modular catheter for stent delivery system that the present invention provides has the advantages that (1) exists
Under the control of modular catheter, support can accurately be released in lesions position；(2) induction system can be discharged before using
Inner air, is prevented effectively from the formation of air thrombosis；(3) modular catheter integral outer is smooth, it is to avoid conceal dirt
The risk of dirt also improves and holds comfort level.
Although the present invention discloses as above with preferred embodiment, so it is not limited to the present invention, any this area
Technical staff, without departing from the spirit and scope of the present invention, when a little amendment and perfect can be made, therefore this
Bright protection domain is when with being as the criterion that claims are defined.
Claims (16)
1. the modular catheter for implant induction system, it is characterised in that include
Slide-bar, described slide-bar is the hollow tubular member being provided with at least one axial slots, and described slide-bar has proximally and distally；
Front-slider and rear slider, slide in described front-slider is arranged on described slide-bar with rear slider and with described slide-bar and be connected, described front-slider is near the far-end of described slide-bar, be provided with in described front-slider and rear slider for push pipe through mesopore, it is provided with elastomeric element between described front-slider and rear slider, described rear slider is provided with the first drive mechanism at described axial slots；
Back handle, described back handle is rotatably arranged in the outside of described slide-bar, described back handle be internally provided with the second drive mechanism engaged that matches with the first drive mechanism on described rear slider.
2. the modular catheter for implant induction system as claimed in claim 1, it is characterized in that, the inner surface of described slide-bar is provided with at least one row's chisel teeth, being fixedly installed shell fragment on described front-slider and rear slider, described front-slider is connected with the chisel teeth in described slide-bar by described shell fragment with rear slider.
3. the modular catheter for implant induction system as claimed in claim 1, it is characterized in that, the outside of described slide-bar is provided with snap ring, described snap ring is rotationally connected with described back handle, described snap ring is with the rotation of described back handle and/or moves axially and is axially moveable, and described snap ring is connected with described front-slider.
4. the modular catheter for implant induction system as claimed in claim 3, it is characterised in that described front-slider is additionally provided with side opening, and described side opening connects with the mesopore of described front-slider；Described side opening is communicated by the outside of described axial slots with described slide-bar.
5. the modular catheter for implant induction system as claimed in claim 4, it is characterised in that described snap ring is provided with card annular distance, and described card annular distance is connected with the side opening of described front-slider.
6. the modular catheter for implant induction system as claimed in claim 5, it is characterised in that also including tube for transfusion, one end of described tube for transfusion is connected through described card annular distance with the side opening of described front-slider, and the other end of described tube for transfusion connects infusion set.
7. the modular catheter for implant induction system as claimed in claim 6, it is characterised in that be provided with check valve between described tube for transfusion and described infusion set.
8. the modular catheter for implant induction system as claimed in claim 1, it is characterised in that described first drive mechanism is the external screw thread being arranged on rear slider；Described external screw thread extend out to the outside of described slide-bar by described axial slots；Described second drive mechanism is the female thread being meshed with described external screw thread.
9. the modular catheter for implant induction system as claimed in claim 8, it is characterized in that, it is fixedly installed threaded fasteners inside described back handle, described threaded fasteners is for carrying female hollow member, and described slide-bar engages through described threaded fasteners and described female thread with described external screw thread.
10. the modular catheter for implant induction system as claimed in claim 9, it is characterised in that axially disposed between the female thread of described threaded fasteners have a non-threaded band, and described external screw thread is disengaged from described female thread at described non-threaded band.
11. as claimed in claim 1 for the modular catheter of implant induction system, it is characterised in that described elastomeric element is spring.
12. as claimed in claim 1 for the modular catheter of implant induction system, it is characterised in that also include that front hand grip, described front hand grip are arranged on the far-end of described slide-bar.
13. as claimed in claim 1 for the modular catheter of implant induction system, it is characterized in that, the near-end of described slide-bar is provided with boss, tail end sleeve it is additionally provided with outside the near-end of described slide-bar, described tail end sleeve is provided with press device, and the position of described press device is corresponding with described boss.
14. as claimed in claim 1 for the modular catheter of implant induction system, it is characterized in that, it is additionally provided with safety lock on described modular catheter, described safety lock is arranged at the lockhole of described slide-bar by the snap close on back handle, being provided with the buckle matched with described lockhole on described safety lock, described buckle tight fit is arranged on described lockhole.
15. as claimed in claim 14 for the modular catheter of implant induction system, it is characterised in that being provided with being unlocked by pressing device on described safety lock, described being unlocked by pressing device is for taking out described safety lock from described modular catheter.
16. as claimed in claim 1 for the modular catheter of implant induction system, it is characterised in that the smooth outer surface of described slide-bar is smooth.
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| CN201510378688.1A CN106308986B (en) | 2015-07-01 | 2015-07-01 | A kind of modular catheter for implantation material transport system |
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| CN201510378688.1A CN106308986B (en) | 2015-07-01 | 2015-07-01 | A kind of modular catheter for implantation material transport system |
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| CN106308986B CN106308986B (en) | 2018-06-01 |
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| CN110786973A (en) * | 2018-08-03 | 2020-02-14 | 先健科技(深圳)有限公司 | Assembly, conveyor and system for controlling release of an implantation instrument |
| CN111067682A (en) * | 2018-10-22 | 2020-04-28 | 东莞市先健医疗有限公司 | Assembly and system for controlling release of implantable device |
| CN112315638A (en) * | 2020-11-03 | 2021-02-05 | 湖南埃普特医疗器械有限公司 | Support conveying system |
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Address after: No. 3399 Lane 1, Kangxin Highway, Pudong New District, Shanghai, 201318 Patentee after: Shanghai minimally invasive heart pulse medical technology (Group) Co.,Ltd. Address before: No. 3399 Lane 1, Kangxin Highway, Pudong New District, Shanghai, 201318 Patentee before: SHANGHAI MICROPORT ENDOVASCULAR MEDTECH Co.,Ltd. |
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