CN207071112U - Induction system - Google Patents
Induction system Download PDFInfo
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- CN207071112U CN207071112U CN201621470895.6U CN201621470895U CN207071112U CN 207071112 U CN207071112 U CN 207071112U CN 201621470895 U CN201621470895 U CN 201621470895U CN 207071112 U CN207071112 U CN 207071112U
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- sheath core
- core pipe
- interior sheath
- distal end
- induction system
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Abstract
It the utility model is related to a kind of induction system, for Delivery lumen support, including interior sheath core pipe, guide head located at interior sheath core pipe distal end and the anchor log in interior sheath core pipe and between guide head and interior sheath core pipe near-end, anchor log includes the annular body and at least two finger pieces being sheathed in interior sheath core pipe, finger piece is in annular body, and extend towards guide head, finger piece includes the finger section parallel with interior sheath core pipe and the mounting section of connection finger section and annular body, finger section is provided with the stop block of radially-inwardly sheath core pipe extension close to the surface of interior sheath core pipe.Compared to prior art, the utility model is in Delivery lumen support, due in small distance between stop block and sheath core, can limit the movement of intraluminal stent, avoid intraluminal stent from discharging in advance.
Description
Technical field
Technical field of medical instruments is the utility model is related to, more particularly, to a kind of induction system.
Background technology
The sustainer of human body is divided into aorta ascendens, the arch of aorta, descending thoracic aorta and abdominal aorta.Because various pathology change
Become, such as inflammation, ulcer can cause the damage of aorta vessel inner membrance or vascular wall, under the collective effect of blood flow impact force,
The diseases such as aneurysm easily occur.Aneurysm is once rupture, and a large amount of blood will flow out blood vessel, and the blood volume of patient blood circulation is not
Foot, cause human body shock or dead.
For the treatment method of aneurysmal disease, common is divided into operative treatment and drug therapy.At present therapeutic modality with
Based on operative treatment.Traditional operation treatment (i.e. open surgery) is after extracorporeal circulation of blood is established, by aneurysm lesion vesselses
Cut off, recycle artificial blood vessel connection blood vessel, realize the therapeutic modality of the normal circulation of arterial blood.Due to using tradition
The mode operation risk of operative treatment aneurysmal disease is high, larger to people's wound, therefore, to old, weak crowd, it will cause very
Big physical trauma, and postoperative need longer time to recover.
Since the nineties, a kind of new treatment method is turned into using interventional treatments treatment sustainer angiocardiopathy.
With the continuous development of interventional technique, aortic aneurysm is treated using intraluminal stent and showing advantage day for artery dissection disease protrudes.
Sustainer intraluminal stent refers to the artificial tube chamber being adapted with tube chamber size, as follows using process：First by intraluminal stent compress into
In the sheath of induction system；Secondly, in femoral artery or common iliac artery position puncture vessel, track is established using seal wire；Then, will fill
The induction system for being loaded with intraluminal stent is transported to through the common iliac artery-abdominal aorta-aorta pectoralis-arch of aorta-aorta ascendens
Lesion specified location；Then, discharge intraluminal stent, its expansion is close to aneurysm wall, the overlay film of intraluminal stent by blood flow and
Diseased region completely cuts off, and so as to eliminate impact of the blood flow to diseased region aneurysm wall, establishes the passage of blood normal circulation；Most
Afterwards, seal wire and induction system are withdrawn from, completes the PCI to aneurysm and artery dissection.
In the prior art, the release of intraluminal stent is typically to use rear release tech, in the art, passes through sheath core distal end
Anchoring device grappling intraluminal stent distal end bare bracket section and locked.In surgical procedure, first, need to drop back display pipe
To discharge intraluminal stent, now the bare bracket section of intraluminal stent distal end is still restrained；Secondly, by the position for finely tuning intraluminal stent
Put, it is determined that optimal off-position；Finally, recession sheath core, while bare bracket section is separated with anchoring device, the distal end of intraluminal stent
It is released, reaches the complete release of intraluminal stent.This delivery mode can be accurately positioned intraluminal stent, avoid intraluminal stent
It is shifted under blood flow percussion, while the position of intraluminal stent can be adjusted before freeing completely.But also have certain
Limitation, for example, when anchoring members march to tortuous vascular site, because sheath core has certain flexibility, is produced from distal end
Raw bending, cause in blood vessel curved side greatly (when blood vessel side curved greatly refers to vascular bending, the radius of curvature of blood vessel it is big one
Side) anchoring members and sheath core between along sheath core diameter to distance increase, cause indivedual bare bracket sections of intraluminal stent distal end
Freed in advance from anchoring device so that intraluminal stent discharges and can not normally discharged in advance, in turn results in jam or release position
Inaccurate situation is put, reduces the success rate of operation and the safety and effectiveness of operation.
Utility model content
Based on this, it is necessary to provide a kind of induction system that intraluminal stent can be avoided to discharge in advance.
The utility model provides a kind of induction system, including interior sheath core pipe, the guide head located at interior sheath core pipe distal end and
Anchor log in interior sheath core pipe and between the guide head and interior sheath core pipe near-end, the anchor log include being sheathed on
Annular body and at least two finger pieces in the interior sheath core pipe, the finger piece is in the annular body, and towards institute
Guide head extension is stated, the finger piece includes the finger section parallel with the interior sheath core pipe and the connection finger section and the ring
The mounting section of shape main body, the finger section are provided with radially stopping to the interior sheath core pipe extension close to the surface of the interior sheath core pipe
Block.
In one of the embodiments, stop block distal end apart from the finger section distal end along the interior sheath core pipe axle
To distance be more than or equal to 1/3rd of length of the finger section along the interior sheath core pipe axial direction, the stop block is near
Hold the distance apart from the finger section distal end to be less than or equal to for the finger section section along the interior sheath core pipe axial direction two points
One of.
In one of the embodiments, the stop block close to the surface of the interior sheath core pipe and the finger section inwall it
Between along between the distance of interior sheath core pipe radial direction and the interior sheath core tube wall and the finger section inwall along interior sheath core pipe footpath
To distance ratio range be 1:3 to 1:2.
In one of the embodiments, the induction system also includes hollow push rod and is connected in pushing away for the push rod near-end
Bar handle, the pusher grip include handle casing and the hollow shaft being contained in the handle casing, the interior sheath core pipe
The push rod and hollow shaft are arranged in, and the distal end of the distal end push rod of the interior sheath core pipe is close to the induction system
Distal end, the near-end of the near-end of the near-end pusher grip of the interior sheath core pipe close to the induction system.
In one of the embodiments, the hollow shaft includes the main part in the handle casing, the master
Body portion has distal ports, interlude and proximal segment successively from distal end to near-end, and the near-end of the push rod is contained in the distal ports
In, the internal diameter of the interlude is less than the internal diameter of the proximal segment, with the tube chamber of the interlude and the junction of proximal segment
One limited step of interior formation.
In one of the embodiments, sealing ring is additionally provided with the inner chamber of the hollow ram, the interior sheath core pipe is relative
When the pusher grip is static, the sealing ring and the outer wall of the interior sheath core pipe are brought into close contact.
In one of the embodiments, the hollow shaft also includes the hollow company for protruding the pusher grip proximal lateral
Socket part, the connecting portion offer an opening towards the groove of the induction system near-end, and the bottom of the groove offers
With the through hole of the intracavity inter-connection of the proximal segment；The push-rod assembly also includes bonnet, is contained in the proximal segment and can
Relative to the clamper of proximal segment movement, the bonnet is in hat shape, including is extended along the axial direction of the bonnet towards distal end
Hollow column, the clamper clamps the interior sheath core pipe in the presence of the column.
In one of the embodiments, the through hole of the hollow column of the bonnet includes bellmouth from distal end to near-end
And cylindrical hole, the bellmouth proximally gradually increase to the direction of distal end, its radial dimension, the bellmouth distal end
Radial dimension is more than holder proximal end end radial dimension, and the radial dimension of the bellmouth distal end is less than the bullet
The maximum radial dimension of property intermediate plate.
In one of the embodiments, the clamper include tubular main body and be connected with the body distal end to
Few two elastic clips.
In one of the embodiments, the elastic clip is provided with projection close to the surface of the interior sheath core pipe.
In one of the embodiments, the projection is arcwall face close to the surface of the interior sheath core pipe.
In one of the embodiments, in multiple elastic clips, the edge between every two neighboring elastic clip
The spacing distance of the circumferencial direction of the interior sheath core pipe is equal.
The utility model additionally provides a kind of induction system, and it includes handle and the interior sheath core being arranged in the handle
Pipe, the handle include handle casing, the hollow shaft being contained in the handle casing, can relatively described handle casing along institute
The clamper stated the hollow column of the axial movement of hollow shaft and be contained in the hollow shaft, the interior sheath core
Pipe is arranged in the hollow shaft, and the near-end of the hollow shaft is connected with the bonnet, is moved along the axial direction of the hollow shaft
Dynamic described hollow column contacts and extrudes the clamper so that interior sheath core pipe described in the gripper.
In one of the embodiments, the induction system includes interior sheath core pipe, the guide head located at interior sheath core pipe distal end
And the anchor log in interior sheath core pipe and between the guide head and interior sheath core pipe near-end, the anchor log include set
Annular body and at least two finger pieces in the interior sheath core pipe, the finger piece are located in the annular body, and
Extend towards the guide head, the finger piece includes the finger section parallel with the interior sheath core pipe and the connection finger section and institute
The mounting section of annular body is stated, the finger section is provided with close to the surface of the interior sheath core pipe radially to be extended to the interior sheath core pipe
Stop block.
In one of the embodiments, stop block distal end apart from the finger section distal end along the interior sheath core pipe axle
To distance be more than or equal to 1/3rd of length of the finger section along the interior sheath core pipe axial direction, the stop block is near
Distance of the end apart from the finger section distal end is less than or equal to two along the interior sheath core pipe axial direction for the finger section section
/ mono-.
In one of the embodiments, the stop block close to the surface of the interior sheath core pipe and the finger section inwall it
Between along between the distance of interior sheath core pipe radial direction and the interior sheath core tube wall and the finger section inwall along interior sheath core pipe footpath
To distance ratio range be 1:3 to 1:2.
In one of the embodiments, the hollow shaft includes the main part in the handle casing, the master
Body portion has distal ports, interlude and proximal segment successively from distal end to near-end, and the near-end of the push rod is contained in the distal ports
In, the internal diameter of the interlude is less than the internal diameter of the proximal segment, with the tube chamber of the interlude and the junction of proximal segment
One limited step of interior formation.
In one of the embodiments, sealing ring is additionally provided with the inner chamber of the hollow ram, the interior sheath core pipe is relative
When the pusher grip is static, the sealing ring and the outer wall of the interior sheath core pipe are brought into close contact.
In one of the embodiments, the through hole of the hollow column of the bonnet includes bellmouth from distal end to near-end
And cylindrical hole, the bellmouth proximally gradually increase to the direction of distal end, its radial dimension, the bellmouth distal end
Radial dimension is more than holder proximal end end radial dimension, and the radial dimension of the bellmouth distal end is less than the bullet
The maximum radial dimension of property intermediate plate.
In one of the embodiments, the elastic clip is provided with projection close to the surface of the interior sheath core pipe.
In one of the embodiments, the elastic clip is provided with projection close to the surface of the interior sheath core pipe.
In one of the embodiments, the projection is arcwall face close to the surface of the interior sheath core pipe.
In induction system of the present utility model, anchor log includes the annular body and at least two being sheathed in interior sheath core pipe
Finger piece, finger piece extend in the annular body, and towards guide head, finger piece include the finger section parallel with interior sheath core pipe and
The mounting part of finger section and annular body is connected, finger section is provided with radially-inwardly sheath core pipe extension close to the surface of interior sheath core pipe
Stop block.When anchor log marches to tortuous vascular site, make although sheath core distal end produces bending between anchor log and sheath core
Along sheath core diameter to distance increase, but due to the presence of stop block, it is in small distance between interior sheath core pipe, can limit pipe
The movement of chamber support, avoids intraluminal stent from discharging in advance.
Brief description of the drawings
Fig. 1 is the structural representation for the induction system that the utility model embodiment provides；
Fig. 2 is the structural representation of the pusher grip of the induction system in Fig. 1；
Fig. 3 is the structural representation of the push rod of the induction system in Fig. 1；
Fig. 4 is the structural representation of the hollow shaft of the induction system in Fig. 1；
Fig. 5 is the structural representation of the bonnet of the induction system in Fig. 1；
Fig. 6 is the enlarged drawing at the A in Fig. 2；
Fig. 7 is structural representation of the pusher grip under feed status in Fig. 2；
Fig. 8 is the enlarged drawing at the B in Fig. 7；
Fig. 9 is the structural representation of the clamper of the induction system in Fig. 1；
Figure 10 is the side view of the clamper in Fig. 9；
Figure 11 is the structural representation of the sheath core assembly of the induction system in Fig. 1；
Figure 12 is the structural representation of the anchor log of the induction system in Fig. 1；
Figure 13 is structural representation when intraluminal stent is fully enclosed the induction system into Fig. 1；
Figure 14 is view of Fig. 1 induction system in curved blood vessel.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, the element can be straight
Grounding connection can also be connected to another element indirectly on another element by one or more connecting element
On.When an element is known as " being connected to " another element, it can be connected directly on another element, or
It is connected to by one or more connecting element on another element.
In the utility model, it is near-end to define away from the relative proximity of one end of operator, and away from operator, relatively remote one end is remote
End.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model
The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include
The arbitrary and all combination of one or more related Listed Items.
Referring to Fig. 1, the induction system 100 that the utility model embodiment provides, for intraluminal stent to be delivered into human body
Tube chamber inside, it includes epitheca tube assembly 10, push-rod assembly 20, interior sheath core-pipe subassembly 30.
Epitheca tube assembly 10 includes sheath handle 12 and the outer sheath 11 being connected with the distal end of sheath handle 12.Outer sheath
11 and 12 equal inner hollow of sheath handle and be interconnected.
Material used in outer sheath 11 can be one or more of in the materials such as nylon, polyimides, polyurethane, polyester
Collocation, or outer sheath 11 can be made up of reinforced pipe.Preferably, in order to realize that intensity is high, compliance is good and low-friction coefficient is same
When reach optimal, can use compound reinforced pipe, such as the metal spring multiple tube that internal layer is PTFE (polytetrafluoroethylene (PTFE)).Operation
Person operates sheath handle 12, to control the advance of outer sheath 11 (mobile to distal end) or recession (moving proximally to), so as to real
The now release and recovery to intraluminal stent.
Epitheca tube assembly 10 also includes being fixedly installed on sheath handle 12 and is connected with the tube chamber of outer sheath 11
Haemostatic valve 13.Haemostatic valve 13 can be used for transmitting flushing liquor or contrast agent into outer sheath 11, while can also be used to discharge epitheca
Air in pipe 11.
Also referring to Fig. 2, push-rod assembly 20 includes push rod 21 and the pusher grip 22 being connected with push rod 21.Push rod 21
It is connected to the distal end of pusher grip 22, and push rod 21 and 22 equal inner hollow of pusher grip and is interconnected.Push rod 21 it is remote
End can be contained in outer sheath 11 through sheath handle 12.Pusher grip 22 is arranged at sheath handle 12 away from outer sheath 11
Side, that is to say, that pusher grip 22 be located at sheath handle 12 proximal lateral.
Also referring to Fig. 2 and Fig. 3, push rod 21 includes rigid section 212 and the compliant section 211 being connected with rigid section 212.
Compliant section 211 is identical with the external diameter of rigid section 212.Rigid section 212 can pass through the phase of the modes and pusher grip 22 such as gluing, pressing
Even.Because compliant section 211 needs to enter relatively tortuous blood vessel, to avoid damage to blood vessel or tissue, so general use
PEBAX, LDPE etc. softer material is made.The preparation method of rigid section 212 can be one section by compliant section 211 close to near-end
Outer layer cut, then the outer tube 2121 of the hardness metal material higher than the hardness of compliant section 211 is put, in this way, by overcoat
One section of compliant sections 211 of 2121 coverings and outer tube 2121 thereon collectively form rigid section 212.Rigid section 212 and flexibility
Section 211 external diameter it is identical, make the smooth outer surface of push rod 21, here metal material typically can use stainless steel, Nitinol,
The metal materials such as iron, copper, so as to ensure that the hardness of rigid section 212 is not pliable compared with the hardness height of compliant section 211, ensure power
Transmitable.The length of compliant section 211 is relevant with the length for passing through tortuous section of blood vessel, usually 10cm-50cm；Rigid section 212
The effective length being actually needed, generally in 50cm-150cm.It is understood that in other embodiment, the material of outer tube 2121
Material can also be made up of plastic material of the hardness higher than the hardness of compliant section 211, such as：Nylon, PEBAX etc..
Also referring to Fig. 2, Fig. 4 and Fig. 5, pusher grip 22 includes handle casing 221, in handle casing 221 and
Near-end protrude handle casing 221 hollow tubular hollow shaft 222, on the near-end of hollow shaft 222 and can relatively in
Bonnet 223 of the empty axis body along the axial movement of hollow shaft and the clamper 224 being contained in hollow shaft 222.
Also referring to Fig. 2 and Fig. 4, handle casing 221 is that two half shells are assembled, for housing hollow shaft
13.The hollow shaft 222 of hollow tubular includes the hollow main part 2221 and and main part in handle casing 221
2221 near-ends are connected and the hollow connecting portion 2222 of connection.
Main part 2221 includes connected hollow distal ports 2223, hollow interlude 2224 successively from distal end to near-end
And hollow proximal segment 2225.Wherein, hollow distal ports 2223 are used for the rigid section 212 for housing push rod.Hollow interlude
2224 internal diameter is less than the internal diameter of hollow proximal segment 2225, in this way, in the inner chamber of interlude 2224 and proximal segment 2225
The junction of chamber forms a limited step 2226, spacing for being carried out to clamper 224.
Connecting portion 2222 protrudes from the proximal lateral of handle casing 221, and its external diameter is more than the external diameter of main part 2221, has
The proximally facing accepting groove 2227 of one opening.The bottom land of accepting groove 2227 has through hole 2228, the through hole of accepting groove 2227
2228 are connected with the inside of main part 2221.The near-end outer surface of connecting portion 2222 is provided with external screw thread 2229.
Axial direction along bonnet 223 is provided with please refer to fig. 5, bonnet 223 is in hat shape, in bonnet 223 to distally prolonging
The hollow column 2231 stretched.The through hole 2232 of the hollow column 2231 includes connected bellmouth from distal end to near-end
2233 and cylindrical hole 2234.Internal diameter size of the bellmouth 2233 from distal end to near-end is gradually reduced, and its minimum diameter is equal to post
The distal inner diameter in shape hole 2234.It is understood that in other embodiment, the bellmouth 2233 of through hole 2232 can also be cylindricality
Hole.
There is the phase of external screw thread 2229 with the near-end outer surface of hollow shaft 222 in the brim of a hat inner surface setting of hat shape bonnet 223
The internal thread 2235 of cooperation, so as to realize the threaded connection of hollow shaft 222 and bonnet 223.By screwing bonnet 223, you can
Realize that bonnet 223 moves relative to hollow shaft 222 on the axial direction of hollow shaft 222.When bonnet 223 and quill shaft
When body 222 is connected, hollow column 2231 is contained in accepting groove 2227, and hollow shaft 222 and hollow column
2231 is coaxial.
It is understood that in other embodiment, can also between the connecting portion 2222 of bonnet 223 and hollow shaft 222
Axial movement is realized by the projection that can be moved in chute, specifically, such as the shade of bonnet is provided with along bonnet axial direction
The chute of extension, a projection can be provided with the outer surface of connecting portion 2222, promote bonnet, bonnet can be along hollow shaft
Moved to handle casing 222 axial direction.It will also be appreciated that projection can also be arranged on shade, chute is arranged on connection
In portion, now, the shade of bonnet can be contained in connecting portion.
Also referring to Fig. 1, Fig. 4 and Fig. 6, clamper 224 is movably housed in the proximal segment 2225 of hollow shaft 222
In, and its vertical central axis is coaxial with the vertical central axis of the inner chamber of the hollow shaft of column 2231 of bonnet.
Also referring to Fig. 7 and Fig. 8, clamper 224 include tubular main part 2241 and with the near-end phase of main body 2241
Clamping part 2249 even.Clamper 224 includes at least two elastic clips 2242.The particular number of elastic clip 2242 can root
Determined according to actual conditions, do not do specific restriction here.
Main body 2241 close to near-end partial segmentation into the quantity multiple linkage sections equal with the quantity of elastic clip 2242
2243.Preferably, it is equal along the spacing distance of the circumferencial direction of main body 2241 between every two neighboring linkage section 2243.It is this
When the equal structure of separation distance from each other can ensure that clamper 224 is squeezed, each of which elastic clip 2242 can be by
Uniform clamping force, so as to which the clamping of internal sheath core pipe is more firm.
One near-end of linkage section 2243 is connected with a distal end of elastic clip 2242.It is multiple spaced just because of having
Linkage section 2243 presence, each elastic clip 2242 is obtained certain elasticity in radial directions, treat elastic clip
2242 by radially inner active force when, each elastic clip 2242 can internally be gathered, so as to complete internal sheath core pipe
Clamping.It is understood that in other embodiments, if the elasticity of elastic clip 2242 is preferably, linkage section 2243 can also
Omit.
Preferably, the axial length of linkage section 2243 be more than the axial length of main body 2241 1/3rd, and be less than or
Equal to 2/3rds of the axial length of main body 2241.Because if the axial length of linkage section 2243 is less than the axle of main body 2241
To 1/3rd of length, then it can make it that the elasticity that each elastic clip 2242 obtains in radial directions is smaller, in identical
Under radially inner active force effect, multiple elastic clips 2242 are weaker to the interior chucking power of sheath core pipe 31, that is to say, that internal sheath
The clamping of core pipe 31 is not firm enough；If the axial length of linkage section 2243 is more than 2/3rds of the axial length of main body 2241, meeting
Cause the bulk strength of main body 2241 to reduce, linkage section 2243 and main body 2241 exist between the part in addition to linkage section 2243
The risk to fracture.
Multiple elastic clips 2242 are uniformly distributed in the near-end of clamper 224；(i.e. each elastic clip in its natural state
2242 by external force when not acted on), it is not in contact with each other between the adjacent spring intermediate plate 2242 of clamper 224, and multiple elastic clips
2242 arrange (in i.e. multiple elastic clips 2242, per two neighboring elastic clip at equal intervals along the circumferencial direction of main body 2241
It is equal along the circumferencial direction spacing distance of main body 2241 between 2242)；The inner surface of multiple elastic clips 2242 forms a post
The receiving space of shape, for housing interior sheath core pipe 31；In its natural state, the internal diameter of the receiving space is slightly larger than interior sheath core pipe
31 external diameter, so that when not only can guarantee that the opposite handle shell 221 of sheath core pipe 31 movement in needs, interior sheath core pipe 31 can be more
Moved axially in the receiving space that individual elastic clip 2242 is formed, and can also ensure that and do not influenceing what interior sheath core pipe 31 moved
In the case of, guide effect is played in the movement of internal sheath core pipe 31.In this way, the opposite handle shell 221 of sheath core pipe 31 moves in needs
When dynamic, the limitation moved radially by clamper 224 of interior sheath core pipe 31, so as to avoid interior sheath core pipe 31 and miscellaneous part
Between produce friction, and then allow interior sheath core pipe 31 more successfully opposite handle shell 221 move, be not in and other
The generation of situations such as part scraping or clip, improves procedure efficiency and security.In addition, in multiple elastic clips 2242, often
Edge is equal along the circumferencial direction spacing distance of main body 2241 between two neighboring elastic clip 2242, can so ensure clamping
During interior sheath core pipe 31, interior sheath core pipe 31 can be by the chucking power of uniform radial direction, so as to obtain more preferable clamping effect.
In the present embodiment, the quantity of elastic clip 2242 is 4, and four elastic clips 2242 are relative two-by-two.Nature
Under, the external diameter for the clamping part 2249 being made up of four elastic clips 2242 is more than the external diameter of main body 2241.Clamping part 2249 includes
One frustoconical lateral surface 2248 proximally increased to distal component, and under nature on the outside of the frustoconical of clamping part
The maximum outside diameter in face 2248 is more than the maximum inner diameter (i.e. distal inner diameter) of bellmouth 2233.
Preferably, a boss extended radially inwardly 2246 is additionally provided with the inner surface of each elastic clip 2242, it is convex
Platform 2246 is used to preferably clamp the interior sheath core pipe 31 through clamper 224.More preferably, boss 2246 is close to folder
The inner surface of the vertical central axis of holder 224 is arcwall face, when clamping sheath core 110, to increase boss 2246 and interior sheath core pipe
The contact area of 31 lateral wall, so that clamping is more firm, while it can also ensure when interior sheath core pipe 31 moves, elasticity
Intermediate plate 2242 can the axial movement of internal sheath core pipe 31 play a part of a guiding, interior sheath core pipe 31 is smoothly moved
It is dynamic.
It is understood that in other embodiment, if under nature, the internal diameter of clamping part 2249 is slightly larger than interior sheath core pipe
31 external diameter, then can omit should not for boss 2246.
Please join Fig. 5, Fig. 9 and Figure 10 in the lump, be much smaller than due to the maximum inner diameter (i.e. distal inner diameter) of bellmouth 2233 or
Person is equal to the maximum outside diameter in the tapered outer side face of clamping part 2249 under nature, therefore, when bonnet 223 moves towards handle casing 221
When dynamic, clamper 224 is extended proximally into bellmouth 2233, work of at least two elastic clips 2242 in the inwall of bellmouth 2233
Gather under, interior sheath core pipe 31 is clamped.It is understood that in other embodiment, if bellmouth 2233 replaces with cylindrical hole,
Then the maximum outside diameter of the frustoconical lateral surface 2248 of clamping part needs the internal diameter more than cylindrical hole under nature, now, extremely
Few two elastic clips 2242 still can be gathered in the presence of the inwall of cylindrical hole, and interior sheath core pipe 31 is clamped.
Also referring to Fig. 2 and Fig. 4, it is preferable that sealing ring 225 is additionally provided with the proximal segment 2225 of pusher grip 22,
Here sealing ring 225 can use O-ring, can also use other kinds of sealing ring, not do specific restriction here.It is close
Seal 225 is arranged between the limited step 2226 of hollow shaft 222 and the distal end of clamper 224.The distal end of interior sheath core pipe 31 can
Passed through out of sealing ring 225., can be to clamper 224 when the bonnet 223 of pusher grip 22 moves axially to handle casing 221
Thrust is produced, and clamper 224 moves closer in the presence of thrust and crush seal circle 225.In this way, the sealing ring being extruded
225 can be brought into close contact with interior sheath core pipe 31, and by the tube chamber of the tube chamber of the interlude 2224 of hollow shaft 222 and proximal segment 2225
(i.e. the tube chamber of interlude 2224 is isolated with the external world) is separated, interior sheath core pipe 31 is clamped in clamper 224 so as to realize
When, tube chamber and the external world of interlude 2224 are isolated, and then carry out intraluminal stent implantation when, avoid produce gas leakage or
Blood flows out external situation through proximal segment 2225 from interlude 2224 and occurred, and ensures the safety and effectiveness of operation.
It is understood that in other embodiment, have shell fragment clamper 224 can omit should not, now, if rotation
During bonnet 223, the column 2231 of bonnet 223 can contradict and crush seal circle 225, and now sealing ring 225 is not only
The tube chamber of interlude 2224 can be isolated with the external world, interior sheath core pipe 31 can also be held tightly to serve as the effect of clamper.
Refer to Figure 11, the interior sheath core-pipe subassembly 30 in the present embodiment includes：Interior sheath core pipe 31, anchor log 32, guide head
33 and female Luer 34.
Guide head 33 includes connected cephalic par 331 and joint portion 332.The external diameter of cephalic par 331 is from distal end to near-end group
Part increases, and maximum outside diameter is equal with the external diameter of be adapted to outer sheath 11 so that when cephalic par 331 contacts with outer sheath 11, outside
It can be seamlessly transitted between sheath 11 and cephalic par 331, in this way, blood vessel can be avoided damage to during 100 intravasation of induction system.
Joint portion 332 is located at the near-end of cephalic par 331, and its maximum outside diameter is slightly less than the internal diameter of outer sheath 11, can be contained in outer sheath 11
It is interior.
Also referring to Fig. 2 and Figure 11, interior sheath core pipe 31 is coaxially disposed inside push rod 21, and substantially through whole conveying
System 100, i.e., the interior distal end of sheath core pipe 31 pass from the distal end of outer sheath 11.The distal end of push rod 21 can pass the distal end of outer sheath 11,
The distal end of interior sheath core pipe 31 passes through push rod 21, and the near-end of interior sheath core pipe 31 passes from the near-end of pusher grip 22, and interior sheath
Core pipe 31, push rod 21 and outer sheath 11 can move to axial two-by-two.
Also referring to Figure 11 and Figure 12, in the utility model embodiment, anchor log 32 that interior sheath core pipe 31 is distally set
Including being fixedly connected on the interior outer wall annular body of one week 321 of sheath core pipe 31 and remote from the inside sheath core pipe 31 of annular body 321
Hold at least two finger pieces 322 of extension.At least two finger pieces 322 are uniformly distributed in 321 outer wall of annular body one week.Annular
Main body 321 can be integrally formed with least two finger pieces 322 thereon, can also be connected by way of welding.
Annular body 321 can be fixedly connected on the outer of interior sheath core pipe 31 by the mode such as welding, riveting or be spirally connected
Wall.
Each finger piece 322 includes the finger section 3221 for being basically parallel to interior sheath core pipe 31 and connection finger section 3221 is near
End and the mounting section 3222 of annular body 321.The outer surface of finger section 3221 is by mounting outer surface and the annular body of section 3222
The 321 curved smooth excessivenesses of outer surface finger section, prevent finger piece 322 and intraluminal stent scratching.Each finger piece 322 is substantially in
U-lag is formed between L-type, with interior sheath core pipe 31, so ensure that when anchor log 32 carries out grappling to intraluminal stent, tube chamber branch
The bare bracket part of frame can be hung in the mounting section 3222 in U-lag, and in conveying, the bare bracket part of intraluminal stent will not
Depart from anchor log 32, improve the stability of grappling.In the utility model, the finger-like for being basically parallel to interior sheath core pipe 31
Section 3221 refers to that finger section 3221 can be parallel to each other completely with interior sheath core pipe 31, and can also be substantially parallel to each other (allows
Relatively interior some low dips of sheath core pipe 31 of finger section 3221).
Preferably, in the utility model embodiment, each inner surface setting of finger piece 322 has what inside sheath core pipe 31 extended
Stop block 323.
It should be noted that when anchor log 32 is traveling in tortuous vascular site, because interior sheath core pipe 31 has necessarily
Flexibility, distal end easily produce bending, in this way, in blood vessel side curved greatly, increase between interior sheath core pipe 31 and finger section section 3221
The distance along the interior radial direction of sheath core pipe 31, indivedual bare bracket sections of intraluminal stent can be caused to be freed in advance from anchor log 32, made
Obtain support to discharge in advance, in turn result in jam or off-position inaccuracy situation.Also referring to Figure 11, and in the present embodiment,
Each inner surface setting of finger piece 322 has the stop block 323 that inside sheath core pipe 31 extends, when entering tortuous blood vessel 300, only
The bare bracket part for hanging over finger piece 322 can further be carried out being limited on finger piece 322 by block 323, even if interior sheath core
Pipe 31 produces bending, because the space along the interior radial direction of sheath core pipe 31 between stop block 323 and interior sheath core pipe 31 is smaller, and only
A U-shaped hook formation can be substantially formed between block 323, finger section 3221 and mounting section 3222, remains able to ensure to hang
Bare bracket part in the mounting section 3222 of finger piece 322 continues to mounting thereon, ensures that support is follow-up and normally releases
Put.
It is highly preferred that distance along interior sheath core pipe 31 axial direction of the distal end of stop block 323 apart from the distal end of finger piece 322 is minimum
For 1/3rd of length of the finger piece 322 along the axial direction of interior sheath core pipe 31, the near-end of stop block 323 is apart from the distal end of finger piece 322
The distance along the axial direction of interior sheath core pipe 31 be up to the half of length of the finger piece 322 along the interior axial direction of sheath core pipe 31, it is this
Set-up mode can maximize the effect of stop block 323.Because if stop block 323 set too close to or mistake
In away from the distal end of finger piece 322, when interior sheath core pipe 31 is bent, the bare bracket part of intraluminal stent 200 is easily separated from
Anchor log 32, so as to cause intraluminal stent 200 not discharge.
It is highly preferred that stop block 323 between the surface of interior sheath core pipe 31 and the inwall of finger piece 322 along interior sheath core pipe
The ratio of the distance along the interior radial direction of sheath core pipe 31 between the distance of 31 radial directions and the outer wall and the inwall of finger piece 322 of interior sheath core pipe 31
It is 1 to be worth scope:3 to 1:2.Because if stop block 323 is between the surface of interior sheath core pipe 31 and the inwall of finger piece 322
Along between the distance of the interior radial direction of sheath core pipe 31 and the interior outer wall of sheath core pipe 31 and the inwall of finger piece 322 along interior sheath core pipe 31 radially
Distance ratio be more than 1:2, the hypotelorism of the outer surface of stop block 323 and interior sheath core pipe 31 can be caused, intraluminal stent 200 is not
Easily release；If stop block 323 between the surface of interior sheath core pipe 31 and the inwall of finger piece 322 along interior sheath core pipe 31 radially
Distance and the interior outer wall of sheath core pipe 31 and the inwall of finger piece 322 between the distance along the interior radial direction of sheath core pipe 31 ratio be less than 1:
3, then distance along interior sheath core pipe 31 radial direction of the stop block 323 between the surface of interior sheath core pipe 31 and the inwall of finger piece 322
It is too small, then it can cause, in bending, the bare bracket part of intraluminal stent 200 easily shifts to an earlier date interior sheath core pipe 31 from finger piece 322
Depart from, cause can not normally discharging for intraluminal stent 200, in the present embodiment, stop block 323 close to the surface of interior sheath core pipe 31 with
Between the inwall of finger piece 322 along between the distance of the interior radial direction of sheath core pipe 31 and the interior outer wall of sheath core pipe 31 and the inwall of finger piece 322
The distance along the interior radial direction of sheath core pipe 31 ratio range be 1:3 to 1:2, it can ensure, when induction system 100 is bent, will to manage
The bare bracket part of chamber support 200 is defined.
It is understood that technical staff can be set according to the flexible in size of actual intraluminal stent 200 in the present embodiment
The length of finger piece 322, to ensure when 100 Delivery lumen support of induction system, each finger piece 322 of anchor log 32 can
The bare bracket part of intraluminal stent is hooked, so as to which intraluminal stent is fettered.
It is understood that in other embodiment, center axis body, bonnet and clamper can also be arranged at sheath handle
In.It will also be appreciated that in other embodiment, the near-end of center axis body can not also protrude the proximal lateral of shell, now, after
The shade of lid can omit should not, and can be with opposite shell in as long as hollow extrusion can be connected with hollow shaft
The axial movement of empty axis body, and contact and extrude clamper so that sheath core pipe in gripper.
The course of work of induction system 100 of the present utility model is further elaborated below.
First, sheath handle 12 is operated to drive outer sheath 11 mobile to distal end, will be mounted with the anchor of intraluminal stent 200
Determine part 32 to be contained in outer sheath 11,；Secondly, the bonnet 223 of pusher grip 22 is screwed on hollow shaft 222, outside handle
Clamper 224 in shell 221 clamps interior sheath core pipe 31, and sheath core pipe 31 will not move axially in guarantee, by tube chamber branch
Frame 200 is transported to during precalculated position, because interior sheath core pipe 31 can keep axial lock-out state, therefore intraluminal stent 200
It will not be separated with anchor log 32, the precalculated position that smoothly can be conveyed intraluminal stent 200；Then, then tube chamber branch is carried out
The release of frame 200, specifically, when discharging intraluminal stent 200, sheath handle 12 is operated first to drive outer sheath 11 proximally
It is mobile so that intraluminal stent 200 is exposed from outer sheath 11, that is, completes the release of the main body of intraluminal stent 200, then will
The bonnet 223 of pusher grip 22 disassembles from hollow shaft 222, so as to the elasticity of the clamper 224 in pusher grip 22
Intermediate plate 2242 recovers to nature from rounding state, and sheath core pipe 31 releases to the locking of axial direction, then to induction system 100
Sheath core pipe 31 in near-end pulling, makes the distal end of intraluminal stent 200 be separated with anchor log 32, releases anchor log 32 to intraluminal stent
200 grappling, so as to complete the release of intraluminal stent 200.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (12)
1. a kind of induction system, including interior sheath core pipe, the guide head located at the interior sheath core pipe distal end and located at the interior sheath core
Anchor log on pipe and between the guide head and interior sheath core pipe near-end, the anchor log include being sheathed on the interior sheath core
Annular body and at least two finger pieces on pipe, the finger piece prolong in the annular body towards the guide head
Stretch, the finger piece includes the finger section substantially parallel with the interior sheath core pipe and the connection finger section and the annular body
Mounting section, the finger section is provided with radially to the stop block of the interior sheath core pipe extension close to the surface of the interior sheath core pipe.
2. induction system according to claim 1, it is characterised in that the stop block distal end is apart from finger section distal end
The distance along the interior sheath core pipe axial direction be more than or equal to the three of length of the finger section along the interior sheath core pipe axial direction
/ mono-, it is the finger section section along described that distance of the stop block near-end apart from the finger section distal end, which is less than or equal to,
The half of interior sheath core pipe axial direction.
3. induction system according to claim 1, it is characterised in that the stop block is close to the surface of the interior sheath core pipe
The distance and the interior sheath core tube wall and the finger section inwall along interior sheath core pipe radial direction between the finger section inwall
Between the distance along interior sheath core pipe radial direction ratio range be 1:3 to 1:2.
4. induction system according to claim 1, it is characterised in that the induction system also includes hollow push rod and company
In the pusher grip of the push rod near-end, the pusher grip includes handle casing and is contained in hollow in the handle casing
Axis body, the interior sheath core pipe is arranged in the push rod and hollow shaft, and the distal end push rod of the interior sheath core pipe is remote
End is close to the distal end of the induction system, and the near-end of the near-end pusher grip of the interior sheath core pipe is close to the delivery system
The near-end of system.
5. induction system according to claim 4, it is characterised in that the hollow shaft includes being located at the handle casing
Interior main part, the main part have distal ports, interlude and proximal segment, the near-end of the push rod successively from distal end to near-end
It is contained in the distal ports, the internal diameter of the interlude is less than the internal diameter of the proximal segment, with the interlude and near-end
A limited step is formed in the tube chamber of the junction of section.
6. induction system according to claim 5, it is characterised in that sealing is additionally provided with the inner chamber of the hollow ram
When circle, the interior relatively described pusher grip of sheath core pipe are static, the sealing ring and the outer wall of the interior sheath core pipe are brought into close contact.
7. induction system according to claim 5, it is characterised in that the hollow shaft also includes protruding the push rod hand
The hollow connecting portion of handle proximal end side, the connecting portion offer an opening towards the groove of the induction system near-end, institute
The bottom for stating groove offers through hole with the intracavity inter-connection of the proximal segment；The push-rod assembly also includes bonnet, housed
In in the proximal segment and can relative to the proximal segment move clamper, the bonnet include along the bonnet axial direction
Towards the hollow column of distal end extension, the clamper clamps the interior sheath core pipe in the presence of the column.
8. induction system according to claim 7, it is characterised in that affiliated clamper also includes elastic clip, after described
The through hole of the hollow column of lid includes bellmouth and cylindrical hole from distal end to near-end, and the bellmouth is proximally to distal end
Direction, its radial dimension gradually increase, and the radial dimension of the bellmouth distal end is more than holder proximal end end footpath
To size, the radial dimension of the bellmouth distal end is less than the maximum radial dimension of the elastic clip.
9. induction system according to claim 7, it is characterised in that the clamper include tubular main body and with institute
State at least two connected elastic clips of body distal end.
10. induction system according to claim 9, it is characterised in that the elastic clip is close to the interior sheath core pipe
Surface is provided with projection.
11. induction system according to claim 10, it is characterised in that the projection is close to the surface of the interior sheath core pipe
For arcwall face.
12. induction system according to claim 9, it is characterised in that in multiple elastic clips, per two neighboring institute
The spacing distance for stating the circumferencial direction along the interior sheath core pipe between elastic clip is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621470895.6U CN207071112U (en) | 2016-12-29 | 2016-12-29 | Induction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621470895.6U CN207071112U (en) | 2016-12-29 | 2016-12-29 | Induction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207071112U true CN207071112U (en) | 2018-03-06 |
Family
ID=61512256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621470895.6U Active CN207071112U (en) | 2016-12-29 | 2016-12-29 | Induction system |
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| Country | Link |
|---|---|
| CN (1) | CN207071112U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108245290A (en) * | 2016-12-29 | 2018-07-06 | 先健科技(深圳)有限公司 | Transport system |
| CN109700572A (en) * | 2018-12-29 | 2019-05-03 | 先健科技(深圳)有限公司 | Only compression apparatus and its conveyer for conveyer |
| CN112888472A (en) * | 2018-10-05 | 2021-06-01 | 阿克拉伦特公司 | Coupling assembly for a variable diameter surgical instrument |
| WO2021129631A1 (en) * | 2019-12-23 | 2021-07-01 | 杭州唯强医疗科技有限公司 | Stent delivery and release device and stent delivery and release system |
| WO2024099325A1 (en) * | 2022-11-07 | 2024-05-16 | 先健科技(深圳)有限公司 | Delivery device and cerebral embolism protection system |
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2016
- 2016-12-29 CN CN201621470895.6U patent/CN207071112U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108245290A (en) * | 2016-12-29 | 2018-07-06 | 先健科技(深圳)有限公司 | Transport system |
| CN108245290B (en) * | 2016-12-29 | 2024-05-31 | 先健科技(深圳)有限公司 | Conveying system |
| CN112888472A (en) * | 2018-10-05 | 2021-06-01 | 阿克拉伦特公司 | Coupling assembly for a variable diameter surgical instrument |
| US11602619B2 (en) | 2018-10-05 | 2023-03-14 | Biosense Webster (Israel) Ltd. | Coupling assembly for variable diameter surgical instrument |
| CN109700572A (en) * | 2018-12-29 | 2019-05-03 | 先健科技(深圳)有限公司 | Only compression apparatus and its conveyer for conveyer |
| CN109700572B (en) * | 2018-12-29 | 2020-09-25 | 先健科技(深圳)有限公司 | A stop device that contracts for conveyer and conveyer thereof |
| US12029669B2 (en) | 2018-12-29 | 2024-07-09 | Lifetech Scientific (Shenzhen) Co., Ltd | Anti-shrinkage device used for conveyor and conveyor thereof |
| WO2021129631A1 (en) * | 2019-12-23 | 2021-07-01 | 杭州唯强医疗科技有限公司 | Stent delivery and release device and stent delivery and release system |
| WO2024099325A1 (en) * | 2022-11-07 | 2024-05-16 | 先健科技(深圳)有限公司 | Delivery device and cerebral embolism protection system |
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