CN209075051U - From swollen stent delivery system and its conveying handle - Google Patents
From swollen stent delivery system and its conveying handle Download PDFInfo
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- CN209075051U CN209075051U CN201820165365.3U CN201820165365U CN209075051U CN 209075051 U CN209075051 U CN 209075051U CN 201820165365 U CN201820165365 U CN 201820165365U CN 209075051 U CN209075051 U CN 209075051U
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- Prior art keywords
- impeller
- push rod
- thread segment
- rotating bar
- outer tube
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- 238000010586 diagram Methods 0.000 description 4
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- 238000000034 method Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 210000004204 blood vessel Anatomy 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 210000004243 sweat Anatomy 0.000 description 2
- 230000002792 vascular Effects 0.000 description 2
- 240000007817 Olea europaea Species 0.000 description 1
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
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- 230000004323 axial length Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The utility model provide it is a kind of from swollen stent delivery system and its conveying handle, comprising: push rod and rotating bar, and the actuator of driving rotating bar rotation, with two sections of thread segments that hand of spiral is opposite in rotating bar, first thread segment is equipped with the first pipe fitting, an impeller is connected on push rod, impeller has the main part being threaded through on the second thread segment, main part can lock with the second thread segment and rotate and move linearly with the second thread segment in the locked state, can also unlock with the second thread segment；Rotating bar rotation drives the first pipe fitting and impeller reverse linear mobile, impeller and the second thread segment mutually locking during linear movement, if impeller and the second thread segment are unlocked, impeller can be driven to recall, then make the two mutually locking, can continue to drive push rod linear movement.The utility model realization effectively conveys the bracket for specification of growing up, and entire conveying decreased food is moderate, is easy to the operation of doctor.
Description
Technical field
The utility model relates to minimally invasive interventional medical device technical fields, more particularly to a kind of from swollen stent delivery system
And its conveying handle.
Background technique
By taking peripheral vascular stents intervene as an example, the implantation of intravascular stent is needed by transportation system, in the prior art, generally
If Chinese patent 201110190183.4 discloses a kind of stent delivery system, the hollow bowl and outer tube being mutually socketed are used,
Intravascular stent is arranged between the inner and outer pipe sections, and inner tube is a hollow structure, and internal passage penetrates convenient for seal wire when operation；Hand
When art, duct unit is transported to operative region by the guidance of seal wire by transportation system, and control unit makes outer tube and inner tube make phase
To movement, intravascular stent is unfolded and pastes blood vessel in the process, plays the role of support.
The axial direction of the axial length that bracket is unfolded in body lumen, generally less than bracket under outer tube internal pressure contracting state is long
Degree, therefore, the difference of the two length and latter length ratio are known as bracket cripetura rate.For above-mentioned self-expandable stent conveying with
Delivery mode is positioned and is discharged in bracket when cripetura rate of the bracket in body lumen is zero or is smaller (such as less than 3%)
Generally there is no too big problems in the process.However, the high cripetura of bracket biggish for cripetura rate, especially titanium-nickel wire braiding
Property bracket (30% or more), this delivery mode is there are many defects, 1) this simple delivery mode just not can guarantee bracket
Bracket anchor point physical location after anchor point and release before release matches, and rack far end is caused to shift.Assuming that bracket exists
Length in outer tube under compressive state is L0, and is discharged into and makes a reservation for intraluminal practical natural length as L1, then bracket is axially short
Contracting amount is △ L=L0-L1.Since axial cripetura will occur in release for bracket, and mount proximal end is not when bracket discharges completely
It is still compressed in the sheath of transportation system, it is immovable.So the anchor point of rack far end can proximally be moved with the cripetura of bracket
Dynamic, after the completion of bracket release, anchor point mobile distance in distal end can achieve △ L, to cause bracket positioning inaccurate, give hand
Art operation brings the deuce to pay, or even causes operative failure.2) because axial cripetura will occur during release for bracket,
Adherent distal portions bracket can gradually move to the near end (or having the tendency that this movement) with bracket cripetura in body lumen,
It is this to move the damage that very likely will cause lumen wall.In addition, during bracket release, due to rack far end and proximal end
It is limited respectively by body lumen inner wall and transportation system, the bracket of incomplete cripetura can have axial tension effect, so that branch
There are axial force between frame and body lumen inner wall, this involve power also easily causes the damage of lumen wall.
And U.S. Patent application document US78/0097572A1 provides a kind of mode that can discharge braided support paragraph by paragraph,
A kind of mechanism of engageable rack inner wall is set in rack bore, and this mechanism engages bracket in distal movement, drives
Bracket travels forward, and discharges holder part, and when withdrawing and bracket is without engagement, it is made to come back to the chamber of compressed stent
Interior, the position of bracket is constant, this design can be such that mechanism moves back and forth in stent cavity, realizes the piecewise release of bracket, but this sets
Meter is still the release tech based on current " Pin&Pull back ", only release paragraph by paragraph, strengthens control, but when bracket release
It is still that there are the mobile problems of the bracket after position inaccurate and release, and are still in after the completion of bracket release " completely not short
The state of contracting ", actually a kind of state of " being stretched ", thus may cause the reduction of bracket radial support power.
Problem above be all due to during release, bracket cripetura and transportation system can not adjust automatically it is this to adapt to
Cripetura and caused by.And Chinese patent 201110183029.4 discloses a kind of adaptive transportation system of bracket cripetura, the document
Designed transportation system can accurately discharge bracket, non-displacement between bracket and lumen, can avoid bracket to body lumen
Damage.But the transportation system, design is not only complicated, and to the operation handle that specification bracket of growing up then needs to grow very much, very stupid
Weight, and knob driving force is very big, brings big inconvenience to doctor's operation in this way.Therefore, above-mentioned transportation system is difficult at present
Normal conveying is grown up specification bracket, lack it is a kind of can transport specification bracket of growing up from swollen stent delivery system.
Utility model content
In view of the foregoing deficiencies of prior art, the purpose of this utility model is to provide a kind of from swollen bracket delivery system
System and its conveying handle, for solution, structure is complicated for transportation system in the prior art, and is difficult to adapt to convey specification bracket of growing up
The problem of.
In order to achieve the above objects and other related objects, the utility model provides a kind of from the defeated of swollen stent delivery system
Send handle comprising: the push rod and rotating bar being parallel to each other, and the actuator of rotating bar rotation is driven, in the rotating bar
With two sections of opposite thread segments of hand of spiral, the first thread segment, which is equipped with, forms secondary first of bolt and nut with the first thread segment
Pipe fitting has the second pipe fitting on the push rod, is connected with an impeller on the push rod, and the impeller, which has, is threaded through the
Main part on two thread segments, the main part can lock and in the locked state with the second thread segment with second thread segment
It rotates and moves linearly, can also unlock with second thread segment；Actuator drives rotating bar rotation, and the first pipe is driven to connect
Head is moved axially along first thread segment, and impeller is moved axially along second thread segment, and the second thread segment passes through institute
Stating impeller drives push rod to make promotion during push rod linear movement with the reversed linear movement of first pipe fitting
Part and the second thread segment mutually locking, if impeller is moved to the stroke bottom end of impeller, by impeller and the second spiral shell
Line section unlocks, and impeller is driven to be withdrawn into the stroke front end of impeller, then keeps impeller and second thread segment mutual
Locking can continue to drive push rod linear movement.
Preferably, the conveying handle further includes a shell, and the push rod and rotating bar are placed in shell, and shell
Front end has pore, and has the window for accommodating the impeller on shell.
Preferably, the actuator is the rotating wheel being connected with the end of the rotating bar, and rotating wheel is placed in the shell
Rear end.
Preferably, the actuator is connected with the rotating bar between two sections of thread segments.
Preferably, the actuator is worm gear mechanism, and the worm screw in worm gear mechanism is mutually hung down with the rotating bar
Directly, and the end of worm screw has rotation button, and the turbine in worm gear mechanism is engaged with the rotating bar.
Preferably, the main part includes shell, is placed in intracorporal first buckle of shell and the second buckle, and block with first
The first connected button of button, the second button being connected with the second buckle, the first buckle and the second buckle form and accommodate the push rod
The lumen of screw rod, and there is the internal screw thread cooperated with the push rod screw flight on the inner wall of the first buckle and the second buckle, the
One button is placed in the outside of the second buckle and is folded with reset spring between the two, and the second button is placed in the outside of the first buckle and two
It is folded with reset spring between person, the first buckle and second is driven to buckle and mutually separate when the first button and the second button are pressed,
When the first button and the second button do not stress, the first buckle and the second snap thread are located in push rod screw rod.
Preferably, there is the via hole for being embedded the push rod on the shell.
The utility model provides a kind of from swollen stent delivery system comprising:
Duct unit has between outer tube and inner tube including outer tube and the inner tube being threaded through in outer tube and holds blood vessel branch
The bracket loading area of frame, and be located at the inner tube at the intravascular stent loading area and be connected with a branch for pushing intravascular stent to advance
Frame push unit；
And handle is conveyed as described above, first pipe fitting is connected with the proximal end of the outer tube, on the push rod
The second pipe fitting be connected with the proximal end of said inner tube, under the driving of the actuator, first pipe fitting drives outer tube
Linear motion, while push rod drives inner tube to make and the reversed linear motion of outer tube.
Preferably, first pipe fitting is connected by interconnecting piece with the proximal end of the outer tube.
The utility model also provides a kind of from swollen stent delivery system comprising:
Duct unit, including outer tube, the middle pipe being set in outer tube, and the inner tube being threaded through in middle pipe, in outer tube and
There is the bracket loading area for holding intravascular stent, and the middle pipe being located at the intravascular stent loading area is connected with a use between middle pipe
In the stent pushing unit for pushing intravascular stent to advance；Said inner tube has the soft head for being pierced by the outer tube；
And handle is conveyed as described above, first pipe fitting is connected with the outer tube, second on the push rod
Pipe fitting and the middle Guan Xianglian, under the driving of the actuator, first pipe fitting drives outer tube linear motion, simultaneously
Pipe linear motion in push rod drive.
As described above, the utility model from swollen stent delivery system and its conveying handle, have the advantages that this
The rotating bar of utility model has two sections of thread segments, and the hand of spiral on two sections of thread segments is on the contrary, the first thread segment is equipped with
First pipe fitting, and the second thread segment is connected by impeller with push rod, impeller can be with the rotation of the second thread segment and along second
Thread segment linear movement, and can be separated as needed with rotating bar, i.e., when impeller and the second thread segment mutually locking, driving
Rotating bar rotation, and the reverse linear movement simultaneously of the first pipe fitting and impeller have also just driven and have been connected with the first pipe fitting
Outer tube moves together with inner tube or middle pipe that push rod is connected, the bracket of release certain length is realized, when impeller is run to its row
When journey terminal, impeller can be made to unlock, that is, be adjusted to opposite second thread segment moving condition, withdraw impeller to its stroke
End, impeller drives push rod, inner tube or middle pipe to withdraw together when withdrawing, and rotating bar and outer tube are motionless, then by impeller and the
Two thread segment mutually lockings, rotary motion bar discharge the bracket of certain length again, and can and so on, until bracket is complete
It discharges；Therefore, the utility model drives push rod to move back and forth by impeller, and realization has the bracket for specification of growing up
Effect conveying, and entire conveying decreased food is moderate, is easy to the operation of doctor.
Detailed description of the invention
Fig. 1 be shown as the utility model from swollen stent delivery system overall schematic.
Fig. 2 is shown as the top view that conveys handle one embodiment of the utility model from swollen stent delivery system.
Fig. 3 is shown as the side view that conveys handle one embodiment of the utility model from swollen stent delivery system.
Fig. 4 is shown as in Fig. 3 along AA line cross-sectional view.
Fig. 5 is shown as VI concrete structure diagram of actuator in Fig. 3.
Fig. 6 is shown as the attached view that conveys handle another embodiment of the utility model from swollen stent delivery system.
Fig. 7 is shown as the side view that conveys handle another embodiment of the utility model from swollen stent delivery system.
Fig. 8 is shown as VI concrete structure diagram of actuator in Fig. 6.
Fig. 9 is shown as a specific implementation example diagram of the duct unit of the utility model.
Figure 10 is shown as a specific implementation example diagram of the stent pushing unit of the utility model.
Figure 11 is shown as the another specific embodiment figure of the duct unit of the utility model.
Component label instructions
1 outer tube
2 inner tubes
3 connecting tubes
4 pointed soft heads
5 connecting rods
51 helicla flutes
52 holes
6 pushing pieces
7 shells
71 windows
8 first pipe fittings
9 rotating bars
10 push rods
11 left shells
12 right shell bodies
13 first buckles
14 second buckles
15,16 reset spring
17 second buttons
18 first buttons
19 turbines
20 worm screws
21 rotation buttons
22 rotating wheels
It is managed in 30
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
Fig. 1 is please referred to Figure 11.It should be clear that structure, ratio, size etc. depicted in this specification institute attached drawing, are only used
To cooperate the revealed content of specification, so that those skilled in the art understands and reads, it is practical new to be not limited to this
The enforceable qualifications of type, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or size
Adjustment it is practical new should all still to fall in this in the case where not influencing the effect of the utility model can be generated and the purpose that can reach
In the range of the revealed technology contents of type can be covered.Meanwhile in this specification it is cited as "upper", "lower", " left side ",
The term on " right side ", " centre " and " one " etc. is merely convenient to being illustrated for narration, rather than enforceable to limit the utility model
Range, relativeness are altered or modified, under the content of no substantial changes in technology, enforceable when being also considered as the utility model
Scope.
For ease of description, in this specification along its length from swollen stent delivery system, when in use, far from operator
One end be defined as distal end, conveying handle where end be proximal end, and convey handle by proximal operator one end be convey handle
Proximal end, one end of conveying handle connecting conduit unit are distal end.
As shown in Fig. 2, Fig. 3 and Fig. 6, Fig. 7, the utility model provides a kind of conveying hand from swollen stent delivery system
Handle comprising: the push rod 10 and rotating bar 9 being parallel to each other, and the actuator VI that driving rotating bar 9 rotates, the rotating bar 9
The upper two section thread segments opposite with hand of spiral, the first thread segment, which is equipped with, forms secondary the of bolt and nut with the first thread segment
One pipe fitting 8 has the second pipe fitting on the push rod 10, is connected with an impeller V, the impeller V on the push rod 10
With the main part being threaded through on the second thread segment, the main part can with second thread segment lock and in the locked state
It rotates and moves linearly with the second thread segment, can also unlock with second thread segment；Actuator VI drives 9 turns of rotating bar
It is dynamic, drive the first pipe fitting 8 to move axially along first thread segment, impeller V is moved axially along second thread segment,
And second thread segment by the impeller V drive push rod 10 make with the reversed linear movement of first pipe fitting 8, pushing away
Bar 10 impeller V and the second thread segment mutually locking during moving linearly, if impeller V is moved to impeller
When V stroke bottom end, impeller V and the second thread segment are unlocked, impeller V is driven to be withdrawn into the row of impeller V
Cheng Qian end, then make impeller V and the second thread segment mutually locking, can continue that push rod 10 is driven to move linearly.This is practical new
Type drives the first pipe fitting and the movement of impeller reverse linear by a rotating bar 9, and impeller V can be locked with rotating bar 9
It is fixed, can also can withdraw its stroke front end when impeller and 9 lock-off of rotating bar with 9 lock-off of rotating bar, when impeller with
Rotating bar 9 can and so on realize the reciprocating movement of push rod along 9 straight ahead of rotating bar when lockking again, and the first pipe fitting 8
The movement in only one direction, therefore, when by push rod 10 with from swollen stent delivery system middle pipe or inner tube be connected, above-mentioned
One pipe fitting 8 is connected with from the outer tube in swollen stent delivery system, by driving above-mentioned rotating bar 9 to rotate, can be realized outer tube,
The piecewise release for being placed in the bracket between outer tube and inner tube or between outer tube and inner tube is completed in the relative motion of middle pipe or inner tube, because
The conveying handle of this utility model can be used for pushing the bracket for specification of growing up, and its moderate length, operate convenient for doctor.
As shown in Figures 2 to 5, it is a specific embodiment of above-mentioned conveying handle:
It is used to be easily installed, conveying handle as shown in Fig. 2 and Fig. 3, in the present embodiment further includes a shell 7, described to push away
Bar 10 and rotating bar 9 are placed in shell 7, and the front end of shell 7 has pore, and pore is used for from swollen stent delivery system
Duct unit protrudes into, and the rear end of shell 7 has the rotating wheel 22 being connected with the rotating bar 9, and as shown in Figure 5, the present embodiment is adopted
A rotating wheel 22 is connected used in the rear end of rotating bar and is used as above-mentioned actuator VI, and is had on shell 7 and accommodated the impeller V
Window 71, the present embodiment window 71 is the total kilometres of impeller, i.e. reciprocation area in figure along the length of shell axial direction.
Above-mentioned rotating bar 9 is driven to rotate in the present embodiment by rotation wheel 22, and rotating wheel 22 is manually operable
It is rotated, and can also be connected with electric-motor drive, is rotated under the driving of motor and rotating bar 9 is driven to rotate.
For the locking and lock-off for realizing above-mentioned impeller and above-mentioned rotating bar, one as above-mentioned impeller as shown in Figure 4
Specific embodiment, main part includes shell in the present embodiment, and shell is mutually spelled by left shell 11 with right shell body 12, and shell is placed in
The first interior buckle 13 and the second buckle 14, and the first button 18 being connected with the first buckle 13, are connected with the second buckle 14
The second button 17, the first buckle 13 and the second buckle 14 form the lumens for accommodating above-mentioned rotating bars 9, and the first buckle 13 and the
There is the internal screw thread being threadedly engaged with above-mentioned second thread segment on the inner wall of two buckles 14, the first button 18 is placed in the second buckle 14
Outside and be folded with reset spring 16 between the two, the second button 17 is placed in the outside of the first buckle 13 and is folded between the two multiple
Position spring 15 drives the first buckle 13 mutually to separate with the second buckle 14, i.e., when the first button 18 is pressed with the second button 17
Impeller can be detached from above-mentioned rotating bar 9, accordingly even when move impeller along 9 axis direction of rotating bar, rotating bar 9 itself is not yet
It can therefore rotate；The first buckle 13 and the second buckle 14 screw threads positioning when the first button 18 and the second button 17 do not stress
In the second thread segment of rotating bar 9, i.e. impeller is locked in rotating bar 9, when rotating bar 9 rotate when impeller then with the second spiral shell
Line section forms nut-screw pair, moves along a straight line along rotating bar 9.
For the locking and lock-off for realizing above-mentioned impeller V and above-mentioned rotating bar 9, above-mentioned impeller V can also be other knots
Structure such as which is provided with strip and the actuator for driving strip to stretch out and withdraw, card be equipped on the second thread segment of rotating bar 9
Slot, strip is stuck in the locking that rotating bar and impeller are realized in card slot under normal circumstances, and pressing actuator strip is removed out of card slot
The unlock of impeller and rotating bar is realized out.The specific structure of impeller is not described in detail here, and only it is needed to be able to achieve in stress
It, can be with the locking and lock-off of the second thread segment of above-mentioned rotating bar 9 when with not stressing.
To be preferably connected with above-mentioned push rod 10, splice shape with above-mentioned right shell body 12 in above-mentioned left shell 11 in the present embodiment
At the via hole for being embedded the push rod 10.
As shown in Figure 6 to 7, be above-mentioned conveying handle another specific embodiment, the conveying handle of the present embodiment with it is upper
One embodiment is essentially identical, the difference is that: VI installation site of actuator and structure for driving above-mentioned rotating bar 9 to rotate are not
Together.As shown in Fig. 6 and Fig. 8, actuator VI is worm gear mechanism in the present embodiment, worm screw 20 and institute in worm gear mechanism
State that rotating bar 9 is perpendicular, and the end of worm screw 20 has rotation button 21, turbine 19 and the rotating bar in worm gear mechanism
9 engagements, drive worm screw 20 to rotate by turn rotation button 21, then are rotated to drive turbine 19 to rotate, finally by worm screw 20
Rotating bar 9 is driven to rotate.The present embodiment is converted the rotation direction of rotating bar 9 by worm gear mechanism, with this, makes actuator
It can arbitrarily install, not influenced by rotating bar as needed.It such as can be by actuator VI and the rotating bar 9 between two sections of thread segments
It is connected.The rotation of rotation button 21 can be manual toggle, be also possible to be driven by electricity.
It may be other structures to above-mentioned actuator VI, and need to only be able to achieve operation actuator can drive 9 turns of rotating bar
It is dynamic.
As shown in Figure 1, the utility model also provide it is a kind of from swollen stent delivery system comprising duct unit I and above-mentioned
Handle II is conveyed, duct unit I is connected with conveying handle II and is driven by conveying handle II, realized the bracket in duct unit
Release is in human body.Conveying handle II is no longer described in detail herein, and structure is as described above.
As an embodiment of duct unit, as shown in Fig. 1 and Fig. 9, duct unit includes outer tube 1 and wears in the present embodiment
The inner tube 2 being located in outer tube 1 has the bracket loading area for holding intravascular stent between outer tube 1 and inner tube 2, and is located at described
Inner tube 2 at intravascular stent loading area is connected with a stent pushing unit III for pushing intravascular stent to advance；Above-mentioned rotating bar 9
On the first pipe fitting 8 be connected with the proximal end of the outer tube 1, there is on the first pipe fitting 8 external screw thread in the present embodiment, and it is outer
1 screw thread of pipe be connected, the second pipe fitting on the push rod 10 is connected with the proximal end of said inner tube 2, in the present embodiment push rod with it is interior
Pipe screw thread is connected, and the screw pitch of the first thread segment and the second thread segment is than the length and the length of bracket cripetura for bracket free state
Than, above-mentioned rotating bar 9 rotates under the driving of above-mentioned actuator, and the rotation of the first thread segment drives the linear movement of the first pipe fitting,
And then outer tube 1 is driven to move along a straight line, while the rotation of the second thread segment drives impeller linear movement, and then drives by push rod 10
Inner tube 2 is made and the reversed linear motion of the outer tube 1, the release of realization bracket certain length, and the reciprocal shifting of above-mentioned impeller
The dynamic reciprocating movement for realizing inner tube 2, with the piecewise release of this movement realization bracket for cooperating outer tube.
Inner tube 2 is that the end of hollow structure and inner tube 2 has a thread eye spread out of for seal wire in the present embodiment, and when operation leads
Wire hole is passed through for seal wire, and seal wire guiding catheter unit I enters operative region.For convenient for being oriented to and mitigate the damage to vascular wall
Bad, as shown in Figure 9, the end of inner tube 2 is connected with a pointed soft head 4 by connecting tube 3 in the present embodiment.Pointed soft head 4 passes through viscous
Knot agent is connected to the distal end of connecting tube 3, and above-mentioned stent pushing unit III is arranged between the proximal end of connecting tube and the distal end of inner tube 2.
Stent pushing unit III can be made integral type in the present embodiment, or split type.In the present embodiment
Integrated bracket push unit (being unillustrated) may include multiple holes, elastic piece and continuous helical slot, and integrated bracket push is single
First material Nitinol is cut by laser, deforms and thermal finalization processing is formed.Stent pushing unit III is point as shown in Figure 10
Body formula, split type stent pushing unit includes connecting rod 5 and pushing piece 6, and stent pushing unit III be set as when to
Bracket is not moved when proximal end is withdrawn；The illustrative embodiment of connecting rod 5, connecting rod 5 include the continuous helical close to distal end
Slot 51, helicla flute 51 are cut by laser to be formed, and helicla flute 51 connects the proximal end with connecting tube by sweat soldering mode, connection
The part of promising raising and the combination of polymer is arranged in bar 5, which has multiple holes 52 for kidney-shaped, multiple holes 52 and inner tube
2 are connected by the sweat soldering mode of putting.Above-mentioned pushing piece 6 includes round tubular body and elastic piece；All elastic in pushing piece 6
Circumferential direction on be uniformly distributed and its quantity is 2-6, elastic plate shape be rectangular lower part and olive shape top or rectangular lower part and
Trapezoidal upper or unitary tapered structure, or whole rectangle structure.
Duct unit protrudes into the shell of above-mentioned conveying handle in the present embodiment, outer tube 1 and the first pipe in duct unit
Connector 8 is connected, and the inner tube in duct unit is connected with above-mentioned push rod 10, can make 8 edge of the first pipe fitting when rotating bar 9 rotates
Rotating bar 9 is moved to the proximal end of conveying handle, and push rod drives inner tube to the distal movement of conveying handle.The present embodiment middle external tube
1 can be connected directly with above-mentioned first pipe fitting 8, and outer tube 1 can also be connected by interconnecting piece with the first pipe fitting 8.
Using the above-mentioned process for carrying out bracket conveying from swollen stent delivery system are as follows: rotate above-mentioned rotating bar 9, the first spiral shell
The rotation of line section drives the linear movement of the first pipe fitting 8, and the rotation of the second thread segment drives impeller V to move linearly；First pipe fitting
8 drive outer tubes 1 move backward (i.e. mobile to the proximal end of conveying handle), and bracket is unfolded a distance, and the drive of impeller V pushes away
Bar 10 moves forward, and then inner tube 2 is driven to move forward, and the stent pushing unit III in inner tube 2 pushes forward bracket centainly
Bracket is so discharged certain length by distance；When the operation of impeller V to its stroke terminal or operation a distance, press
Above-mentioned first button 18 and the second button 17 are pressed, unlocks impeller and rotating bar 9, then move impeller V to its stroke front end
(the stroke front end of impeller is close to one end of conveying handle proximate end in the present embodiment, and the stroke terminal of impeller is close to defeated
Send one end of distal handle), impeller and the second thread segment are locked, drives rotating bar 9 to rotate again, discharges a fixed length again
The bracket of degree, and so on, until frame is completely released away.
As the second embodiment of above-mentioned duct unit, as shown in Fig. 1 and Figure 11, the present embodiment duct unit includes outer tube
1, the middle pipe 30 being set in outer tube 1, and the inner tube 2 being threaded through in middle pipe 30 have between outer tube 1 and middle pipe 30 and hold
The bracket loading area of intravascular stent, and be located at the middle pipe 30 at the bracket loading area and be connected with one for pushing intravascular stent to advance
Stent pushing unit；Said inner tube 2 has the pointed soft head 4 for being pierced by the outer tube；Above-mentioned first pipe fitting 8 in the present embodiment
It is connected with the outer tube 1, the second pipe fitting on the push rod 10 is connected with the middle pipe 30, in the driving of the rotating bar 9
Under, first pipe fitting 8 drives outer tube 1 to move along a straight line, while pipe 30 is made to transport with the reversed straight line of outer tube 1 in the drive of push rod 10
It is dynamic.The present embodiment and above-mentioned duct unit are essentially identical, the difference is that the present embodiment is three pipe sleeve of the outer pipe, the pipe and the inner pipe
If bracket loading area is between outer tube and middle pipe, and the duct unit in a upper embodiment only has outer tube and inner tube.
Inner tube in the present embodiment is that the end of hollow structure and inner tube has a thread eye spread out of for seal wire, inner tube it is remote
End connects the soft head in the village Yi Jian by connecting tube.The stent pushing list in stent pushing unit and a upper embodiment in the present embodiment
Member is identical, can be an integral structure, or split type structure.It is not described in detail here.
The bracket transmission process of the present embodiment and a upper embodiment are essentially identical, specifically: above-mentioned rotating bar 9 is rotated,
It is rotated by the first thread segment and drives the linear movement of the first pipe fitting 8, the rotation of the second thread segment drives impeller V to move linearly；
First pipe fitting 8 drives outer tube 1 to move backward, and bracket is unfolded a distance, and impeller V drives push rod 10 to move forward, into
And coupled middle pipe is driven to move forward, bracket is pushed forward certain distance by the stent pushing unit on middle pipe, so
Bracket is discharged to certain length；When impeller runs to its stroke terminal or runs a distance, pressing above-mentioned first
Button 18 and the second button 17 unlock impeller and rotating bar 9, then move impeller to its stroke front end (in the present embodiment
The stroke front end of impeller is close to one end of conveying handle proximate end, and the stroke terminal of impeller is close to conveying distal handle
One end), impeller and the second thread segment of rotating bar 9 are locked, drives rotating bar 9 to rotate again, discharges certain length again
Bracket, and so on, until frame is completely released away.
In conclusion the utility model can be driven by impeller and be pushed away from swollen stent delivery system and its conveying handle
Bar moves back and forth, and realization effectively conveys the bracket for specification of growing up, and entire conveying decreased food is moderate, is easy to doctor's
Operation.So the utility model effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.
Claims (10)
1. a kind of conveying handle from swollen stent delivery system characterized by comprising the push rod being parallel to each other and rotation
Bar, and the actuator of rotating bar rotation is driven, with two sections of thread segments that hand of spiral is opposite, the first spiral shell in the rotating bar
Line section is equipped with the first pipe fitting that bolt and nut pair is formed with the first thread segment, has the second pipe fitting, institute on the push rod
It states and is connected with an impeller on push rod, the impeller has the main part that is threaded through on the second thread segment, and the main part can be with
Second thread segment locks and rotates and move linearly with the second thread segment in the locked state, can also be with second screw thread
Section unlocks；Actuator drives rotating bar rotation, drives the first pipe fitting to move axially along first thread segment, impeller
It is moved axially along second thread segment, and the second thread segment drives push rod to make and first pipe fitting by the impeller
Reversed linear movement, the impeller and the second thread segment mutually locking during push rod linear movement, if pushing
When part is moved to the stroke bottom end of impeller, impeller and the second thread segment are unlocked, impeller is driven to be withdrawn into promotion
The stroke front end of part, then make impeller and the second thread segment mutually locking, it can continue to drive push rod linear movement.
2. the conveying handle according to claim 1 from swollen stent delivery system, it is characterised in that: the conveying handle
It further include a shell, the push rod and rotating bar are placed in shell, and the front end of shell has pore, and are had on shell and held
Set the window of the impeller.
3. the conveying handle according to claim 2 from swollen stent delivery system, it is characterised in that: the actuator is
The rotating wheel being connected with the end of the rotating bar, rotating wheel are placed in the rear end of the shell.
4. the conveying handle according to claim 1 from swollen stent delivery system, it is characterised in that: the actuator with
Rotating bar between two sections of thread segments is connected.
5. the conveying handle according to claim 4 from swollen stent delivery system, it is characterised in that: the actuator is
Worm gear mechanism, the worm screw and the rotating bar in worm gear mechanism are perpendicular, and the end of worm screw has rotation button, snail
Turbine in worm and gear mechanism is engaged with the rotating bar.
6. the conveying handle according to claim 1 from swollen stent delivery system, it is characterised in that: the main part packet
Shell is included, intracorporal first buckle of shell and the second buckle, and the first button being connected with the first buckle are placed in, with the second buckle
The second connected button, the first buckle and the second buckle form the lumen for accommodating the push rod screw rod, and the first buckle and second
There is the internal screw thread cooperated with the push rod screw flight, the first button is placed in the outside of the second buckle and two on the inner wall of buckle
Reset spring is folded between person, the second button is placed in the outside of the first buckle and is folded with reset spring between the two, presses when first
The first buckle and second is driven to buckle and mutually separates when button and the second button are pressed, when the first button and the second button do not stress
First buckle and the second snap thread are located in push rod screw rod.
7. the conveying handle according to claim 6 from swollen stent delivery system, it is characterised in that: have on the shell
There is the via hole for being embedded the push rod.
8. a kind of from swollen stent delivery system, it is characterised in that: include:
Duct unit has between outer tube and inner tube including outer tube and the inner tube being threaded through in outer tube and holds intravascular stent
Bracket loading area, and be located at the inner tube at the intravascular stent loading area and be connected with one for pushing the bracket of intravascular stent advance to push away
Send unit；
And such as claim 1 to the described in any item conveying handles of claim 7, first pipe fitting and the outer tube
Proximal end is connected, and the second pipe fitting on the push rod is connected with the proximal end of said inner tube, described under the driving of the actuator
First pipe fitting drives outer tube linear motion, while push rod drives inner tube to make and the reversed linear motion of outer tube.
9. according to claim 8 from swollen stent delivery system, it is characterised in that: first pipe fitting passes through interconnecting piece
It is connected with the proximal end of the outer tube.
10. a kind of from swollen stent delivery system, it is characterised in that: include:
Duct unit, including outer tube, the middle pipe being set in outer tube, and the inner tube being threaded through in middle pipe, in outer tube and middle pipe
Between have and hold the bracket loading area of intravascular stent, and be located at the middle pipe at the intravascular stent loading area and be connected with one for pushing away
The stent pushing unit that dynamic intravascular stent advances；Said inner tube has the soft head for being pierced by the outer tube；
And such as claim 1 to the described in any item conveying handles of claim 7, first pipe fitting and the outer tube phase
Even, the second pipe fitting and the middle Guan Xianglian on the push rod, under the driving of the actuator, the first pipe fitting band
Dynamic outer tube linear motion, while pipe linear motion in push rod drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820165365.3U CN209075051U (en) | 2018-01-31 | 2018-01-31 | From swollen stent delivery system and its conveying handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820165365.3U CN209075051U (en) | 2018-01-31 | 2018-01-31 | From swollen stent delivery system and its conveying handle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209075051U true CN209075051U (en) | 2019-07-09 |
Family
ID=67112138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820165365.3U Withdrawn - After Issue CN209075051U (en) | 2018-01-31 | 2018-01-31 | From swollen stent delivery system and its conveying handle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209075051U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108371574A (en) * | 2018-01-31 | 2018-08-07 | 常州乐奥医疗科技股份有限公司 | From swollen stent delivery system and its conveying handle |
| WO2021128940A1 (en) * | 2019-12-24 | 2021-07-01 | 上海蓝脉医疗科技有限公司 | Implant delivery system |
-
2018
- 2018-01-31 CN CN201820165365.3U patent/CN209075051U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108371574A (en) * | 2018-01-31 | 2018-08-07 | 常州乐奥医疗科技股份有限公司 | From swollen stent delivery system and its conveying handle |
| CN108371574B (en) * | 2018-01-31 | 2024-06-25 | 常州乐奥医疗科技股份有限公司 | Self-expanding stent conveying system and conveying handle thereof |
| WO2021128940A1 (en) * | 2019-12-24 | 2021-07-01 | 上海蓝脉医疗科技有限公司 | Implant delivery system |
| KR20220119679A (en) * | 2019-12-24 | 2022-08-30 | 상하이 블루배스큘라 메드테크 컴퍼니 리미티드 | Implant transport system |
| KR102665074B1 (en) | 2019-12-24 | 2024-05-20 | 상하이 블루배스큘라 메드테크 컴퍼니 리미티드 | Implant transfer system |
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| CP03 | Change of name, title or address |
Address after: Building 10, No. 23 Huashan Middle Road, Xinbei District, Changzhou City, Jiangsu Province, 213022 Patentee after: LEO MEDICAL CO.,LTD. Country or region after: China Address before: 213022 2nd floor, building 10, 18 Huashan Road, Xinbei District, Changzhou City, Jiangsu Province Patentee before: LEO MEDICAL CO.,LTD. Country or region before: China |
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Granted publication date: 20190709 Effective date of abandoning: 20240625 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190709 Effective date of abandoning: 20240625 |