CN207286184U - Transport system - Google Patents

Abstract

The utility model discloses a kind of transport system of implant, including sheath, the guide rod being set in outside sheath and the sliding handle being connected with the near-end of sheath, guide rod has along its axially extending sliding slot and the tooth-shape structure on its outer circumferential surface.Sliding handle is connected by a connector being arranged in sliding slot with the near-end of sheath, and sheath can be driven to slide axially in guide rod.Locking system is connected with sliding handle, it includes leader casing, block teeth and lock piece.Leader casing is located in sliding handle and is coaxially set in outside guide rod, and block teeth are located in sliding handle and with the engaging piece engaged with the tooth-shape structure of guide rod.Lock piece drives engaging piece to engage or separate with tooth-shape structure, so as to fulfill the locking of the locking to driving device or releasing to driving device.The locking system can coordinate stent progress safe release, the defects of stent is realized during release progressively controllable, avoid stent from producing displacement and stent release failure because of fluctuation of service during discharging.

Description

Transport system

Technical field

The utility model is related to cardiac vascular medical instrument field, more particularly to it is a kind of for delivery of vascular stent in vivo Transport system.

Background technology

With the continuous development of interventional technique, using the advantage day of overlay film frame treatment aortic aneurysm and artery dissection disease It is aobvious to protrude.Overlay film frame is usually compressed into the space between the sheath of bracket conveyer and sheath core pipe before being implanted human body It is interior.Before conveying overlay film frame, femoral artery or common iliac artery position puncture vessel are typically chosen in, track is established using seal wire, utilized Overlay film frame is transported to lesion locations by conveyer, proximally pulls sheath, until completely revealing overlay film frame and discharging and cover Membrane support, finally recalls conveyer from vivo.Since overlay film frame has self-expanding characteristic, once because sheath recession loses about Beam, overlay film frame release is close to aneurysm wall after opening, so that blood flow and diseased region be completely cut off, eliminates blood flow to lesion The impact of position, establishes the passage of blood normal circulation.Conveyer need to ensure stent release at the uniform velocity, stablize.Existing conveyer is being released The not good enough generation stent migration in releasing position or stent release failure may be produced because of fluctuation of service by putting in stent procedures.

In addition, when that need to be connected with each other using at least two overlay film frames to isolate diseased region, it is necessary in patient's body First support is first implanted into, is then replanted into second support, and second support is partly overlapped with first support.This means implantation During second support, if second support be easy to cause two with respect to the inaccurate just release second support of the releasing position positioning of first support A stent cannot be connected with each other or lap is too short, influence therapeutic effect.

Therefore, it is necessary to provide a kind of transport system with locking system, to realize that stent progressively discharges, or realize Stent half can carry out locking to keep stent to be in half release conditions after discharging to half stent discharged, so as to avoid stent It is not good enough to discharge too fast or releasing position.

Utility model content

The technical problems to be solved in the utility model is, the defects of for the prior art, there is provided one kind has the release fixed The transport system of position latch functions.

Technical solution is used by the utility model solves its technical problem：A kind of transport system is constructed, including is slided Handle and handle, the transport system further include that one end is connected with the handle and the other end being led through the sliding handle Bar, in the guide rod and one end other end that is connected with the sliding handle is pierced by the sheath of the handle, arranged on the sheath Fixed link and sheath core pipe in pipe, the sheath core pipe are connected with the distal end of the fixed link, state guide rod with axially extending along its Sliding slot, the guide rod be located at sliding slot both sides outer surface be equipped with it is multiple along the axial tooth-shape structure spaced apart from each other of guide rod, it is described Transport system further includes the locking system being connected with the sliding handle, and the locking system is used to control the sliding handle edge The movement of the relatively described handle of the sliding slot, so as to control the movement of the relatively described sheath core pipe of the sheath.

In an embodiment of the utility model, the locking system includes being arranged in the sliding handle and being sheathed on institute State the leader casing outside guide rod, the block teeth being connected with the leader casing and the lock piece being connected with the block teeth；The block teeth tool The engaging piece engaged with the tooth-shape structure of the guide rod is useful for, the lock piece is used to control the engaging piece and the tooth form Structure engages or separation, so as to control movement of the sliding handle along the relatively described handle of the sliding slot.

In an embodiment of the utility model, the leader casing is equipped with supporting part, the block teeth and the supporting part It is connected, the block teeth include prizing section and the engaged section positioned at the supporting part opposite side positioned at the supporting part side, The site of engagement is in the engaged section, and the lock piece is connected with the section that prizes, and the block teeth are in the lock piece It can be swung under driving around the supporting part.

In an embodiment of the utility model, the window for exposing the tooth-shape structure is offered on the leader casing Mouthful, the engaging piece of the block teeth is engaged through the window with the tooth-shape structure.

In an embodiment of the utility model, the supporting part has an arc-shaped surface, the block teeth be equipped with it is described The arc groove that supporting part coordinates.

In an embodiment of the utility model, the supporting part is hinge, the block teeth by the hinge with it is described Leader casing is hinged.

In an embodiment of the utility model, both ends at least one end of the leader casing is equipped with a pair of of limited block, and one The limited block is oppositely arranged so as to form limiting slot, the end for prizing section and the engaged section at least one be located at In the limiting slot.

In an embodiment of the utility model, the lock piece includes prizing fixed column and the set that section is connected with described Button in the fixed column, the button expose from the sliding handle.

In an embodiment of the utility model, the locking system further includes elastic component.

In an embodiment of the utility model, the elastic component includes the guide post being arranged in the engaged section and is set in Spring on the guide post, the spring one end abut one end with the sliding handle inner wall and are abutted with the engaged section.

In an embodiment of the utility model, the elastic component includes the engaged section and the guide rod being strapped in one The bullet circle risen.

In an embodiment of the utility model, the engaged section is equipped with groove, and the bullet circle is arranged in the groove.

In an embodiment of the utility model, the elastic component include being set in the fixed column and positioned at it is described by Elastic component inside button, the elastic component are abutted with the button.

In an embodiment of the utility model, the leader casing is equipped with the opening for being used for housing the block teeth, described Support zone is connected in the opening and with the leader casing.

In an embodiment of the utility model, the lock piece includes being sheathed on the leader casing periphery and can be relative to The leader casing in axial sliding Trigger shoe, for driving the Trigger shoe relative to leader casing trigger in axial sliding, The trigger exposes from the sliding handle.

In an embodiment of the utility model, the locking system further includes elastic component, and the elastic component includes fixing Spring top cover and the resetting spring that is set on the leader casing in the leader casing near-end, described resetting spring one end with The Trigger shoe abuts, and the other end is abutted with the spring top cover.

In an embodiment of the utility model, the near-end of the leader casing is equipped with a circle limiting groove, the spring top Set includes main body and the support division radially extended from the proximal, and the main body, which is equipped with, to be hooked arranged on described spacing recessed Hook body in groove, the support division are abutted with the other end of the resetting spring.

In an embodiment of the utility model, the multiple tooth-shape structure is parallel to each other.

The transport system of the utility model is equipped with locking system, which can coordinate stent to carry out safe release, protect Demonstrate,prove stent during release at the uniform velocity, stablize, stent is realized during release progressively controllable, avoid stent discharge during The defects of displacement and stent release failure are produced because of fluctuation of service.

Brief description of the drawings

Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing：

Fig. 1 is a kind of sectional view of the transport system first embodiment of implant of the utility model；

Fig. 2 be the implant shown in Fig. 1 transport system in locking system broken away view；

Fig. 3 is the top view of leader casing in locking system shown in Fig. 2；

Fig. 4 is the sectional view in the leader casing A-A directions shown in Fig. 3；

Fig. 5 be the implant of the utility model transport system first embodiment in block teeth sectional view；

Fig. 6 is the schematic diagram when transport system of the implant shown in Fig. 1 is in release conditions；

Fig. 7 is the schematic diagram when transport system of the implant shown in Fig. 1 is in lockup state；

Fig. 8 is a kind of sectional view of the transport system second embodiment of implant of the utility model；

Fig. 9 be the implant shown in Fig. 8 transport system in locking system broken away view；

Figure 10 be the implant shown in Fig. 8 transport system in block teeth sectional view；

Figure 11 is the schematic diagram when transport system of the implant shown in Fig. 8 is in release conditions；

Figure 12 is the schematic diagram when transport system of the implant shown in Fig. 8 is in lockup state；

Figure 13 is a kind of structure diagram of the transport system 3rd embodiment of implant of the utility model；

Figure 14 is the sectional view of the transport system of the implant shown in Figure 13；

Figure 15 be the implant shown in Figure 13 conveying device in locking system broken away view；

Figure 16 is the enlarged drawing at A positions in Figure 15；

Figure 17 is the top view of leader casing in locking system shown in Figure 15；

Figure 18 is the sectional view in the leader casing B-B directions shown in Figure 17；

Figure 19 be the implant shown in Figure 13 conveying device in block teeth sectional view；

Figure 20 is the schematic diagram when transport system of the implant shown in Figure 13 is in release conditions；

Figure 21 is the schematic diagram when transport system of the implant shown in Figure 13 is in lockup state.

Embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only explaining The utility model, is not used to limit the utility model.

In intervention medical field, usually definition away from the relative proximity of one end of operator is near-end, away from operator it is relatively remote one Hold as distal end.

First embodiment：

As shown in Figure 1, a kind of transport system include sheath core pipe 11, fixed link 12, sheath 22, guide rod 21, sliding handle 23, Handle 13 and locking system 30.

Fixed link 12 passes through handle 13.The near-end of sheath core pipe 11 is connected with the distal end of fixed link 12, the distal end of sheath core pipe 11 It is further fixed on TIP first 4.The outside diameter of sheath core pipe 11 is less than the outside diameter of fixed link 12.Sheath 22 is coaxially set in 11 He of sheath core pipe Outside fixed link 12.Sheath core pipe 11, fixed link 12 and TIP first 4 are used for the passage as seal wire, and seal wire is through sheath core pipe 11 and admittedly After fixed pole 12, by the guiding of seal wire, sheath 22 can smooth intravasation.Sheath core pipe 11 is connected with the distal end of fixed link 12, Sheath core pipe 11 is than fixed link 12 carefully so as in one step part of the distal end of fixed link 12 formation.Handle 13 is the fixation of conveyer Component, and handle 13 is cavity body structure, is gripped in operation for doctor.

Guide rod 21 is a luminal structure, its distal end is fixed on the inside of handle 13, and near-end is pierced by from sliding handle 23.Such as Shown in Fig. 2, guide rod 21 is equipped with sliding slot 212 along its length, is distributed with multiple spaced on outer circumferential surface and is parallel to each other and sets The tooth-shape structure 211 put, it is preferable that the length extending direction of tooth-shape structure 211 is vertical with the length extending direction of sliding slot 212. Sliding handle 23 is connected by a connector 24 (as shown in Figure 1) being arranged in sliding slot 212 with the near-end of sheath 22, sheath 22 Distal end be pierced by from handle 13.While pressing locking system 30, sliding handle 23 is pulled, sheath can be driven by connector 24 Pipe 22 is moved along sliding slot opposite handle 13, and after unclamping locking system 30, sliding handle 23 remains stationary as on guide rod 21, sheath Pipe 22 is relatively fixed bar 12 and sheath core pipe 11 is held in position.When sheath 22, which moves to distal end end face, closes up with first 4 end faces of TIP, The distal end end face of the inner wall of sheath 22 and sheath core pipe 11 and fixed link 12 cooperatively forms the cavity for housing overlay film frame, for inciting somebody to action Overlay film frame is compressed in the cavity, wherein, the distal end end face of fixed link 12 and the step part and tip heads of the formation of sheath core pipe 11 4 proximal face is used to lean with the both ends of overlay film frame 50.At this time, handle 13 is contacted with sliding handle 23, sheath core pipe 11 Length between the proximal face of the distal end end face of fixed link 12 and tip first 4 is equal to the effective length of overlay film frame.Work as sheath Pipe 22 drop back under the manipulation of sliding handle 23 to it is concordant with the end face of 12 distal end of fixed link when, overlay film frame 5 can be because lose The constraint of sheath 22 and discharge opening, when 22 proximal movement of sheath to exposed portion overlay film frame, overlay film frame is in half Release conditions.As a preferred embodiment, sliding handle 23 can be equal to overlay film branch along the maximum length that 21 opposite handle 13 of guide rod moves Sliding handle 23 can directly be moved to and be unable to movement position and discharge overlay film branch by the effective length of frame, thus, doctor in operation Frame.

Also referring to Fig. 1 and 2, locking system 30 include being sheathed on leader casing 31 outside guide rod 21, with 31 phase of leader casing Block teeth 32 even and the lock piece 33 being connected with block teeth 32.Wherein, leader casing 31 and block teeth 32 are located inside sliding handle 23.

As shown in Figures 2 to 4, leader casing 31 is a hollow tubular component, it has one to be used to expose the tooth on guide rod 21 The window 312 of shape structure 211 and the supporting part 311 set close to the edge of window 312.Supporting part 311 has arc-shaped Surface.In addition, the both ends of leader casing 31 further respectively have a pair of of limited block 313, any pair of 313 relative spacing of limited block is set Put, so as to form limiting slot 314 between two limited blocks.

As shown in Figure 2 and Figure 5, block teeth 32 have the matched arc groove 322 in arc-shaped surface with supporting part 311, With the engaging piece 321 engaged with the tooth-shape structure 211 on guide rod 21.Thus, block teeth 32 are with arc groove 322 or supporting part 311 It is divided into for boundary and prizes section 323 and the engaged section positioned at 322 opposite side of arc groove positioned at 322 side of arc groove 324.Prize the end of section 323 and the end of engaged section 324 to be respectively positioned in limiting slot 314, so that it is guaranteed that block teeth 32 are relative to leading Rod set 31 is relatively fixed in x and y direction.In consideration of it, the limited block on leader casing 31 can also be only a pair of, it may be provided at and lead The either end of rod set 31.Engaged section 324 is exposed from the window 312 of leader casing 31, and engaging piece 321 is located in engaged section 324, and Engaging piece 321 is fastened on the two neighboring tooth-shape structure 211 on guide rod 21 through window 312.Fixation in lock piece 33 Column 331 is connected perpendicular to the surface for prizing section 323, and with prizing section 323.By pressing button 332, it can drive and prize section 323 with supporting part 311 for branch spot wobble, it is then real so as to drive engaging piece 321 to be separated with the tooth-shape structure 211 on guide rod 21 The locking to sliding handle 23 is now released, once release button 332, prizes section 323 centered on supporting part 311, is returned back to just Beginning position, engaging piece 321 will be stuck between two neighboring tooth-shape structure 211 again, so as to fulfill the locking to sliding handle 23. It is understood that the effect of supporting part 311 is to provide a fulcrum, therefore, the structure of supporting part 311 to the swing of block teeth 32 Have a variety of, however it is not limited to the structure that the present embodiment provides, as long as block teeth 32 can be made to be swung around supporting part 311.Such as prop up Support part 311 can also be a hinge, and block teeth 32 are connected with the hinge to be swung so as to around hinge.

In the present embodiment, lock piece 33 includes prizing the fixed column 331 in section 323 arranged on block teeth 32 and is sheathed on solid Button 332 on fixed column 331.Button 332 exposes from sliding handle 23 to be operated easy to doctor.In addition, the locking system 30 also wraps Include an elastic component.In the present embodiment, elastic component is the bullet circle 34 for being bound together engaged section 324 and guide rod 21.In order to more Good fixation bullet circle 34, the groove 325 for housing bullet circle 34 is additionally provided with the engaged section 324 of block teeth 32.Bullet circle 34 be with The component of function is sprung back, block teeth 32 are produced with the binding force of a radial direction, makes the engaging piece 321 of block teeth 32 through leader casing 31 Window 312 presses to guide rod 21 and keeps engagement with the tooth-shape structure 211 on 21 surface of guide rod.

As shown in fig. 6, lower button 332 is pressed, and the radial direction when the active force by lower button 332 more than bullet circle 34 to block teeth 32 During binding force, the engaging piece 321 of block teeth 32 is subject to revolt the power that bullet circle 34 radially fetters, and breaks away from bullet circle 34 to engaging piece 321 radial direction constraint, makes engaging piece 321 and the tooth-shape structure 211 of leader casing 21 become discrete state by engagement, at this time, The opposite power slided disappears constraint sliding handle 23 with guide rod 21, can proximally or distally be drawn while button 332 are pressed Dynamic sliding handle 23, so as to drive sheath 22 to be slided vertically, and then changes the length that sheath core pipe 11 exposes sheath 22 Degree, that is, change the length that the overlay film frame being loaded into sheath 22 is exposed, so as to slide hand by proximally pulling back Handle 23 completes release overlay film frame 5.

As shown in fig. 7, working as release button 332, button 332 is applied to the radial forces that block teeth 32 are prized in section 323 and disappears Lose, under the action of the elastic-restoring force of bullet circle 34, the engaging piece 321 of block teeth 32 is pressed into the tooth form knot on 21 surface of guide rod again Form in structure 211 and therewith engagement.After engagement, sliding handle 23 is subject to about along the tendency toward sliding on 21 axial direction of guide rod Beam, will be unable to drive sheath 22 to slide axially.At this time, the stent of half release is locked out, can not be by operating sliding handle 23 pairs of overlay film frames 5 discharge.

When being conveyed using transport system provided in this embodiment and discharging overlay film frame, once find partly releasing for overlay film frame It is bad to put position, can be during proximally pulling sliding handle 23 to be allowed to separate to discharge overlay film frame with handle 13 at any time Release button 332, stent keep overlay film frame to be in half release conditions, after backing positions are readjusted, then complete overlay film branch Frame discharges completely, so as to avoid stent releasing position not good enough；In addition, also can after stent half discharges to half stent discharged into Row locking is to keep stent to be in half release conditions, so that it is not good enough to avoid stent from discharging too fast or releasing position.

Second embodiment：

As shown in figure 8, a kind of transport system includes sheath core pipe, fixed link, sheath, guide rod, sliding handle, handle and lock Locking apparatus 60.Wherein, the function of sheath core pipe, fixed link, sheath, guide rod, sliding handle and handle and structure are implemented with upper one Example is identical, therefore the present embodiment repeats no more.

As shown in figure 9, locking system 60 is connected with sliding handle 53, locking system 60 include leader casing 61, block teeth 62, Lock piece 63 and elastic component.

The structure of leader casing 61 is identical with a upper embodiment, a hollow tubular component, it has one to be used to expose guide rod 51 On tooth-shape structure 511 window and close to window edge set supporting part.Supporting part has the surface of arc-shaped.This Outside, the both ends of leader casing 61 further respectively have a pair of of limited block, and any pair of limited block relative spacing sets spacing so as to be formed Groove.

The structure of block teeth 62 is also identical with a upper embodiment.As shown in Figure 10, block teeth 62 and the supporting part on leader casing 61 It is connected, it has with the matched arc groove 621 in arc-shaped surface of supporting part and is nibbled with the tooth-shape structure 511 on guide rod 51 The engaging piece 622 of conjunction.Thus, block teeth 62 are divided into positioned at 621 side of arc groove using arc groove 621 or supporting part as boundary Prize section 623 and the engaged section 624 positioned at 621 opposite side of arc groove.Prize the end of section 623 and the end of engaged section 624 Portion is respectively positioned in the limiting slot of leader casing 61, so that it is guaranteed that block teeth 62 are relatively fixed in x and y direction relative to leader casing 61. In consideration of it, the limited block on leader casing 61 can also be only a pair of, the either end of leader casing 61 may be provided at.Engaged section 624 Expose from the window of leader casing 61, engaging piece 622 is located in engaged section 624, and lock piece 63 is connected with prizing section 623, and can be Swung under the driving of lock piece 63 by fulcrum of supporting part, so as to drive engaging piece 622 and the tooth-shape structure on guide rod 61 511 engagements or separation, then realize the locking to driving device or release to driving device locking.It should be understood that supporting part Effect be to provide a fulcrum to the swing of block teeth 62, therefore, the structure of supporting part has a variety of, however it is not limited to which the present embodiment is given The structure gone out, as long as block teeth 62 can be made to be swung around supporting part.Such as supporting part can also be a hinge, block teeth 62 with The hinge is connected to be swung so as to around hinge.

In the present embodiment, lock piece 63 includes prizing the fixed column 631 in section 623 arranged on block teeth 62 and is sheathed on solid Button 632 on fixed column 631.Button 632 exposes from sliding handle 63 to be operated easy to doctor.In addition, the locking system 60 also wraps Include an elastic component 64.Unlike a upper embodiment, in the present embodiment, elastic component 64 includes being arranged in engaged section 624 Guide post 641 and the spring 642 being set on guide post 641,642 one end of spring are abutted with the inner wall of sliding handle 63, the other end Abutted with engaged section 624.Spring 642 has good resistance to compression and resilience.Spring 642 is in normal state to block teeth 62 Engaged section 624 have radial pressure, make tooth of the engaging piece 622 of engaged section 624 under the action of the radial pressure with guide rod 51 Shape structure 511, which is formed, to be engaged and keeps engagement.In other possible embodiments, elastic component can also only include being set in Spring in fixed column, spring are housed in the annular space formed by button internal face and fixed column outer circumferential surface, and one end is with pressing Button abuts, and the other end is abutted with prizing section.

As shown in figure 11, by lower button 632, and the footpath when the active force by lower button 632 more than spring 642 to block teeth 62 During to pressure, the engaging piece 622 of block teeth 62 is subject to revolt the power that spring 642 radially fetters, and breaks away from spring 642 to block teeth 62 Engaging piece 622 radial direction constraint, make engaging piece 622 be become to separate shape by engagement with the tooth-shape structure 511 of leader casing 51 State, after two tooth type structures are kept completely separate, the opposite power slided disappears constraint sliding handle 53 with guide rod 51, sliding handle 53 Sheath 52 can be driven to be slided vertically, at this time, whole transport system is in release or the state to unlock.At this time, may be used Release operation is carried out to overlay film frame to operate sliding handle.

As shown in figure 12, after the power being pressed against on button 632 disappears, button 632 is applied to block teeth 32 and prizes section 623 On radial forces disappear, under the action of the elastic-restoring force of spring 642, the engaging piece 622 of block teeth 62 is pressed into again Form in the tooth-shape structure 511 on 51 surface of guide rod and therewith engagement.After engagement, sliding handle 53 is along 51 axial direction of guide rod Tendency toward sliding suffer restraints, transport system is in lockup state, and sliding handle 53 will be unable to drive sheath 52 to carry out axial cunning It is dynamic.At this time, can not be by operating sliding handle discharging to overlay film frame.

3rd embodiment：

As shown in Figure 13 and Figure 14, a kind of transport system includes sheath core pipe 71, fixed link 72 and handle 73.Sheath core pipe 71, The mutual alignment relation and connection relation of 73 three of fixed link 72 and handle, and the structure of three are all same as first embodiment institute State.

As shown in figure 14, the transport system further include sequentially coaxially be set in from the inside to the outside outside fixed link 72 sheath 82, Guide rod 81 and sliding handle 83.Wherein, the structure and function of sheath 82, guide rod 81 and sliding handle 83, mutual alignment relation and Connection relation etc. is all same as described in first embodiment.Also referring to Figure 13 and 15, locking system 90 and 83 phase of sliding handle Connect, including leader casing 91, block teeth 92 and lock piece 93.

As shown in Figure 17 and Figure 18, leader casing 91 is coaxially set in outside guide rod 81 and inside sliding handle 83.Guide rod Set 91 is a hollow tubular component, it has one for housing the opening 912 of block teeth 92 and the interior and and guide rod positioned at opening 912 The connected supporting part 911 of set 91.Supporting part 911 has the surface of arc-shaped.In addition, one end of leader casing 91 further respectively has one To limited block 913, two limited blocks, 913 relative spacing is set so as to form limiting slot 914.

As shown in figure 19, block teeth 92 are connected with the supporting part 911 on leader casing 91, it has the circular arc with supporting part 911 The matched arc groove 922 in shape surface and engage engaging piece 921 with the tooth-shape structure 811 on guide rod 81.Thus, block teeth 92 with Arc groove 922 or supporting part 911 are divided into for boundary prizes section 924 and recessed positioned at arc positioned at 922 side of arc groove The engaged section 923 of 922 opposite side of groove.The end of engaged section 923 is located in limiting slot 914, so that it is guaranteed that block teeth 92 are relative to leading Rod set 91 is relatively fixed in x and y direction.

Referring to Figure 15, in the present embodiment, lock piece 93 simultaneously can be relative to leader casing including being sheathed on 91 periphery of leader casing 91 Trigger shoes 931 and for driving trigger 932 in axial sliding of Trigger shoe 931 in axial sliding.Trigger 932 is from sliding handle 83 expose easy to doctor's operation.In addition, the locking system 90 further includes an elastic component.In the present embodiment, elastic component includes solid Spring top cover 95 and the resetting spring 94 that is set on leader casing 91 due to 91 near-end of leader casing.Spring top cover 95 includes master The support division 952 that the outer peripheral edge of body 951 and autonomous agent 951 radially extends.It is spacing recessed that the near-end of leader casing 91 is equipped with a circle Groove 915, as shown in figure 16, the inner surface of main body 951 are equipped with a circle hook and body 953 are hooked in limiting groove 915, reset bullet 94 one end of spring is abutted with Trigger shoe 931, and the other end is abutted with support division 952.

As shown in figure 20, when sliding trigger 932, trigger 932 drives Trigger shoe 931 to slide axially, Trigger shoe 931 The engaging piece 921 for driving block teeth 92 is done to the wrap board movement that discrete state is turned to by engaging, tooth with the tooth-shape structure 811 of guide rod 81 Block 92 and guide rod 81 because tooth-shape structure engage caused by resistance disappear, and then constrain that sliding handle 83 is opposite with guide rod 81 to be slided Restraining force disappear.By sliding axially for sliding handle 83, sheath 82 is driven in axial direction to be slided, stent release Latch functions unlock is positioned, stent can continue to discharge.

As shown in figure 21, after stopping sliding trigger 932 and acting on the power on trigger 932 and disappear, trigger 932 and pull Mantle 931 carries out reverse returning movement under the elastic-restoring force effect of resetting spring 94, and Trigger shoe 931 drives block teeth 92 with leading Rod set 91 does the wrap board movement that tooth-shape structure is turned to engagement by separation.After two kinds of tooth-shape structures are opposite to be engaged, hand is slided Handle 83 suffers restraints along the tendency toward sliding on 81 axial direction of guide rod, and transport system is in lockup state, and sheath 82 will be unable to Slide axially, stent release process stops.

In conclusion by the locking system on sliding handle, can stop at any time during stent release, so as to fulfill Progressively release to stent, and the releasing position of stent can be locked during progressively discharging, realize to stent Release process it is stably and controllable, overcome the displacement produced due to fluctuation of service and stent release failure the defects of.

The embodiment of the utility model is not limited only to this, according to content described in above utility model, according to this area Technological know-how and conventional means, on the premise of the basic thought of the utility model is not departed from, the utility model is appointed Modification, the conversion of what form, within the scope of the utility model.

Claims (18)

1. a kind of transport system, including sliding handle and handle, the transport system further include one end be connected with the handle and The other end through the guide rod of the sliding handle, in the guide rod and one end other end that is connected with the sliding handle is pierced by The sheath of the handle, the fixed link in the sheath and sheath core pipe, the distal end phase of the sheath core pipe and the fixed link Even, it is characterised in that the guide rod has along its axially extending sliding slot, and the outer surface that the guide rod is located at sliding slot both sides is equipped with It is multiple that along guide rod, axially tooth-shape structure spaced apart from each other, the transport system further include the locking dress being connected with the sliding handle Put, the locking system is used to control movement of the sliding handle along the relatively described handle of the sliding slot, so as to control described The movement of the relatively described sheath core pipe of sheath.

2. transport system according to claim 1, it is characterised in that the locking system includes being arranged on the sliding handle Interior and the leader casing being sheathed on outside the guide rod, the block teeth being connected with the leader casing and the locking being connected with the block teeth Part；The block teeth have the engaging piece for being used for engaging with the tooth-shape structure of the guide rod, and the lock piece is used to control described nibble Conjunction portion engages or separates with the tooth-shape structure, so as to control fortune of the sliding handle along the relatively described handle of the sliding slot It is dynamic.

3. transport system according to claim 2, it is characterised in that the leader casing is equipped with supporting part, the block teeth It is connected with the supporting part, the block teeth include prizing section and another positioned at the supporting part positioned at the supporting part side The engaged section of side, the site of engagement is in the engaged section, and the lock piece is connected with the section that prizes, and the block teeth are in institute Stating can swing under the driving of lock piece around the supporting part.

4. transport system according to claim 3, it is characterised in that offered on the leader casing for exposing the tooth The window of shape structure, the engaging piece of the block teeth are engaged through the window with the tooth-shape structure.

5. transport system according to claim 3, it is characterised in that the supporting part has arc-shaped surface, the tooth Block is equipped with the arc groove coordinated with the supporting part.

6. transport system according to claim 3, it is characterised in that the supporting part is hinge, and the block teeth pass through institute Hinge is stated to be hinged with the leader casing.

7. transport system according to claim 3, it is characterised in that the both ends of the leader casing at least one end is equipped with one To limited block, a pair of limited block is oppositely arranged so as to form limiting slot, and the end for prizing section and the engaged section is extremely Rare one in the limiting slot.

8. according to claim 3-7 any one of them transport systems, it is characterised in that the lock piece includes prizing with described The fixed column of Duan Xianglian and the button being sheathed in the fixed column, the button expose from the sliding handle.

9. transport system according to claim 8, it is characterised in that the locking system further includes elastic component.

10. transport system according to claim 9, it is characterised in that the elastic component includes being arranged in the engaged section Guide post and the spring that is set on the guide post, the spring one end abut one end with the sliding handle inner wall and nibbled with described Section is closed to abut.

11. transport system according to claim 9, it is characterised in that the elastic component is included the engaged section and institute State the bullet circle that guide rod is bound together.

12. transport system according to claim 11, it is characterised in that the engaged section is equipped with groove, the bullet circle In the groove.

13. transport system according to claim 9, it is characterised in that the elastic component includes being set in the fixed column Elastic component upper and positioned at the button interior, the elastic component are abutted with the button.

14. according to claim 3,5-7 any one of them transport systems, it is characterised in that the leader casing, which is equipped with, to be used for The opening of the block teeth is housed, the support zone is connected in the opening and with the leader casing.

15. transport system according to claim 14, it is characterised in that the lock piece includes being sheathed on the leader casing Periphery and can relative to the leader casing in axial sliding Trigger shoe, for driving the Trigger shoe relative to the leader casing axis To the trigger of slip, the trigger exposes from the sliding handle.

16. transport system according to claim 15, it is characterised in that the locking system further includes elastic component, described Elastic component includes the resetting spring for being fixed on the spring top cover of the leader casing near-end and being set on the leader casing, described Resetting spring one end is abutted with the Trigger shoe, and the other end is abutted with the spring top cover.

17. transport system according to claim 16, it is characterised in that it is spacing recessed that the near-end of the leader casing is equipped with a circle Groove, the spring top cover include main body and the support division radially extended from the proximal, and the main body, which is equipped with, to be hooked Hook body in the limiting groove, the support division are abutted with the other end of the resetting spring.

18. transport system according to claim 1, it is characterised in that the multiple tooth-shape structure is parallel to each other.