CN106923872B - Plugging device, conveyer and plugging system - Google Patents
Plugging device, conveyer and plugging system Download PDFInfo
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- CN106923872B CN106923872B CN201511033594.7A CN201511033594A CN106923872B CN 106923872 B CN106923872 B CN 106923872B CN 201511033594 A CN201511033594 A CN 201511033594A CN 106923872 B CN106923872 B CN 106923872B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
- A61B17/12122—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder within the heart
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12168—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device having a mesh structure
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00606—Implements H-shaped in cross-section, i.e. with occluders on both sides of the opening
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00743—Type of operation; Specification of treatment sites
- A61B2017/00796—Breast surgery
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- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract
The present invention relates to a kind of plugging devices, plugging ontology, proximal sealing head including reticular zone cavity and the locking mechanism for being arranged in cavity, proximal sealing head has the restriction hole penetrated through with cavity, locking mechanism includes at least one locking piece, and locking piece includes the linkage section that one end is connected with plugging device distal end and at least one stretch section being connected with the linkage section other end；Stretch section includes the bending section being connected with linkage section and the pressure section that is connected with bending section, when no external force applies, the proximal direction of bending section towards plugging device is bent, and the direction at center of the pressure section substantially along the longitudinal centre line of vertical blocking device and far from locking mechanism extends；When locking mechanism locks plugging ontology, pressure section passes through the restriction hole of proximal sealing head, and pressure section compresses the surface of plugging ontology.The present invention also provides a kind of for conveying the conveyer and plugging system of above-mentioned plugging device.Locking mechanism of the invention enables plugging ontology to be adjacent to defect, improves block reliability.
Description
Technical field
The present invention relates to interventional medical device technical field more particularly to a kind of closure of interventional therapy congenital heart disease
Device, conveyer and plugging system.
Background technique
Transcatheter occlusion device is common instrument in Cardiac catheterization method, can be used for minimally-invasive treatment atrial septum
The congenital heart diseases such as defect, ventricular septal defect, patent ductus arteriosus and acleistocardia.Plugging device in the prior art is general
Including having there are two the plugging ontology for the waist for blocking this two closure units of unit and connection, two of them block unit and are used to
The tissue of defect two sidewalls is covered, waist is used to fill defect.
Currently memory metal or high molecular material is mostly used to prepare plugging device.However, memory metal can be in use because tired
Labor and fail, high molecular material has low elasticity or inelastic feature, this will lead to two block unit between convergent forces
It is insufficient.The two sides of defect cannot be adjacent to and influence plugging effect by shrinking hypodynamic two closure unit.Therefore these envelopes
Stifled device is required to effective restraining structure to keep the distance between two closure units (i.e. the waist of plugging device is high) to stablize, with true
Protect the reliability blocked.
The proximal sealing head and/or distal end end socket at plugging ontology both ends are set to frequently with locking mechanism locking in the prior art
To constrain the distance between two closure units.However, when locking mechanism locks end socket, because latching force is applied only to seal
Stifled unit is on the position of end socket, it is difficult to reach and block position of the unit far from end socket, directly result in and block unit far from envelope
The position of head cannot be adjacent to defect, to influence the reliability blocked.
Summary of the invention
Based on this, it is necessary to provide it is a kind of make to block unit be adjacent to the plugging device of defect, and match with the plugging device
Cover the conveyer and plugging system used.
The present invention provides a kind of plugging device, plugging ontology, proximal sealing head including reticular zone cavity and is arranged in the sky
The locking mechanism of chamber, the proximal sealing head have the restriction hole penetrated through with the cavity, and the locking mechanism includes at least one
Locking piece, the locking piece include the linkage section that one end is connected with the plugging device distal end and are connected with the linkage section other end
At least one stretch section；The stretch section includes the bending section being connected with the linkage section and supports with what the bending section was connected
Splenium, when no external force applies, the proximal direction of the bending section towards the plugging device is bent, and the pressure section is substantially along vertical
The direction extension at the longitudinal centre line of the straight plugging device and the center far from the locking mechanism；When the locking mechanism is to institute
When stating plugging ontology locking, the pressure section passes through the restriction of the proximal sealing head far from the end of the corresponding bending section
Hole, the pressure section compress the surface of the plugging ontology.
In one of the embodiments, when the locking mechanism locks the plugging ontology, the bending section is compressed
The proximal face of the proximal sealing head.
In one of the embodiments, the quantity of the locking piece be at least two, each locking piece be it is rod-shaped,
Each locking piece includes the linkage section and a stretch section.
The quantity of the locking piece is one in one of the embodiments, and the locking piece includes a connection
Section and at least two stretch sections, the linkage section are tubular structure, and each stretch section is laminated structure.
The stretch section uses the material with shape memory function to prepare in one of the embodiments,.
The material of the stretch section is selected from elastic stainless steel, nickel-titanium-copper alloy, NiTi cobalt and closes in one of the embodiments,
One of gold, Nitinol, polylactic acid and nylon are several.
End of the pressure section far from the corresponding bending section is free end in one of the embodiments, described
The circumferential surface of the end face of free end and the free end seamlessly transits.
The locking mechanism further includes attachment base in one of the embodiments, at least one described locking piece is set to
One end of the attachment base, the other end of the attachment base are connected with the distal end of the plugging device, on the side of the attachment base
It is provided with external screw thread.
The plugging device further includes distal end end socket in one of the embodiments, and the locking mechanism and the distal end are sealed
Head is connected.
The present invention also provides a kind of conveyers, and for conveying plugging device described in any of the above embodiments, the conveyer includes
Hollow locking pipe, it is described locking pipe distal end be used for accommodate the locking mechanism and enter the plugging ontology cavity in
The distal end of the plugging device is detachably connected.
The distal end of the locking pipe is equipped with for detachable with the distal end of the locking mechanism in one of the embodiments,
Connected internal screw thread.
The conveyer further includes hollow sheath, the ejector sleeve being arranged in the sheath, consolidates in one of the embodiments,
Tapered end and connecting filament set on the ejector sleeve distal end, the locking pipe are arranged in the ejector sleeve and the tapered end, the connection
One end of silk is fixed on the tapered end.
The present invention also provides a kind of plugging systems, including plugging device described in any of the above embodiments and above-mentioned conveyer, institute
Stating conveyer further includes hollow sheath, the ejector sleeve being arranged in the sheath, the tapered end for being fixedly arranged on the ejector sleeve distal end and connection
Silk, the locking pipe are arranged in the ejector sleeve and the tapered end, and the distal end of the locking pipe enters the sky of the plugging ontology
Intracavitary and be detachably connected with the distal end of the plugging device, the locking mechanism of the plugging device is contained in the lumen of the locking pipe
In, one end of the connecting filament is fixed on the tapered end, and the other end passes through the plugging device rear enclosure on the locking pipe.
The distal end of the locking pipe is equipped with internal screw thread in one of the embodiments, and the distal end of the locking mechanism is equipped with
With the external screw thread of the screw-internal thread fit.
When being locked using locking mechanism of the invention to plugging ontology, the pressure section of locking piece compresses plugging ontology
Surface, since the resist force is applied in plugging ontology without being limited to proximal sealing head end face, the application range of resist force is larger,
To enable the closure unit of plugging ontology to be adjacent to defect, the reliability of closure is improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the lock state of the plugging device of one embodiment of the invention.
Fig. 2 is the schematic diagram of another direction of plugging device in Fig. 1.
Fig. 3 is the structural schematic diagram of the locking mechanism of plugging device in Fig. 1.
Fig. 4 is the structural schematic diagram of the locking mechanism of another embodiment of the present invention.
Fig. 5 is the schematic diagram that locking mechanism locks plugging device in Fig. 4.
Fig. 6 is the partial structural diagram of the conveyer of one embodiment of the invention.
Fig. 7 is that plugging device is located at the plugging system schematic diagram in sheath in Fig. 1.
Fig. 8 is the schematic diagram that plugging device releases sheath in Fig. 7.
Fig. 9 is that plugging device reaches defect release but unlocked schematic diagram in Fig. 8.
Figure 10 is that plugging device continues release but unlocked schematic diagram in Fig. 9.
Figure 11 is the locked schematic diagram of plugging device in Figure 10.
Figure 12 is the schematic diagram that plugging device is separated with conveyer in Figure 11.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In order to clearly describe structure of the invention, limits term " distal end " herein and " proximal end ", these terms are
Interventional medical device field common terminology, wherein " distal end " indicates that one end in surgical procedure far from operator, " proximal end " indicate
One end of proximal operator is leaned in surgical procedure.
Fig. 1 and Fig. 2 are please referred to, the plugging device 100 of one embodiment of the invention is in the lock state, and plugging device 100 includes net
Plugging ontology 20 of the shape with cavity 201, proximal sealing head 40 and locking mechanism 50.Proximal sealing head 40 is set to the proximal end of plugging ontology 20
It is (i.e. plugging ontology 20 is by one end of proximal operator) and coupled.Proximal sealing head 40 has the restriction hole penetrated through with cavity 201
401.Locking mechanism 50 is arranged in the cavity 201 of plugging ontology 20, and (i.e. locking mechanism 50 is separate for the distal end of locking mechanism 50
One end of operator) it is connect with the distal end (i.e. the one end of plugging ontology 20 far from operator) of plugging ontology 20.Locking mechanism 50
Proximal end (i.e. locking mechanism 50 lean on proximal operator one end) pass through proximal sealing head 40 restriction hole 401 and compress plugging ontology 20
With the distance between the two closure units for locking plugging ontology 20.
In the present embodiment, plugging ontology 20 includes the second envelope of the first closure unit 202 and disk-like structure of disk-like structure
Stifled unit 203.First closure unit 202 is connected to form I-shaped structure with the second closure unit 203.Blocking heart defect
When, the first closure unit 202 and the second closure unit 203 are respectively used to offset with the two sidewalls of defect point atrial septum, to rise
To the effect for blocking heart defect.It is appreciated that plugging ontology 20 can also be other arbitrary shapes, if plugging ontology is single-deck
Structure.The structure of plugging ontology 20 is used only as illustrating in the present embodiment, is not limitation of the present invention, the common skill of this field
Art personnel can select the structure of any suitable plugging ontology 20 under the inspiration of the present invention.
Plugging ontology 20 is easily deformable reticular structure, therefore plugging device 100 can be pressed easily during transportation
Contracting is contained in sheath, and when plugging device 100 releases sheath and reaches defect, plugging device 100 can be easily deformed
At including instrument for blocking the disk-like structure of defect.The reticular structure of plugging ontology 20 can be used with shape memory function
Material or high molecular material be made up of modes such as braiding, tubing cutting, injection moldings.It is described with shape memory function
Material can be selected from one of elastic stainless steel, nickel-titanium-copper alloy, NiTi cobalt alloy and Nitinol or several.The high score
Sub- material can be selected from polyethylene terephthalate (PET:Polyethylene Terephthalate), polylactic acid (PLA:
Poly-L-lactide Acid), polyglycolic acid (PGA:Poly-glycolide), poly-hydroxy fatty acid rouge (PHA:Poly-
Hydroxyalkanoate), polydioxanone (PDO:Poly-dioxanone) and polycaprolactone (PCL:Poly-
Caprolactone one of) or several.
Plugging device 100 can also include the distal end for being set to plugging ontology 20 and coupled distal end end socket 30.Locking
The distal end of mechanism 50 is connect in cavity 201 with distal end end socket 30.It is appreciated that locking mechanism 50 can be solid with distal end end socket 30
Fixed connection, or be detachably connected.It is further appreciated that plugging device 100 can not also include distal end end socket 30, lock at this time
Mechanism 50 can the distal end directly with plugging ontology 20 be connected directly.When plugging ontology 20 using biodegradable Polymer wire weave and
Cheng Shi, distal end end socket 30 are set to the distal end of plugging ontology 20 and accommodate one end of the macromolecule silk, and proximal sealing head 40 is arranged
In plugging ontology 20 proximal end and accommodate the other end of the macromolecule silk.To distal end end socket 30 and proximal sealing head 40 in the present invention
Shape and structure be not particularly limited, in the present embodiment, distal end end socket 30 be hemispherical dome structure, proximal sealing head 40 be hollow posts
Shape structure.
Referring to Fig. 3, locking mechanism 50 includes attachment base 501 and the multiple locking pieces 503 being set on attachment base 501.
In the present embodiment, attachment base 501 is cylindric；Locking piece 503 is rod-shaped hook；It is arranged on one end face of attachment base 501 more
A locking piece 503；The other end far from multiple locking pieces 503 of attachment base 501 is fixedly connected with distal end end socket 30.Attachment base
External screw thread (figure is not marked) is provided on 501 side, for being cooperatively connected with conveyer.
Natural shape of the locking piece 503 when no external force applies is as shown in figure 3, in the present embodiment, and each locking piece 503 is
To be rod-shaped, each locking piece 503 includes linkage section 5031 and stretch section 5033.One end of linkage section 5031 and attachment base 501 connect
It connects, the other end of linkage section 5031 is connect with stretch section 5033.Stretch section 5033 is the hanging warp architecture in one end.Stretch section
5033 include the bending section 5034 being connected with linkage section 5031 and the pressure section 5035 connecting with bending section 5034.Bending section 5034
It is bent towards the proximal direction of plugging device 100.One end of pressure section 5035 is connect with bending section 5034, pressure section 5035 it is another
Free end is in end and the free end is substantially along the longitudinal centre line of vertical blocking device 100 and far from the direction at 503 center of locking piece
Extend.
In the present embodiment, when locking mechanism 50 locks plugging ontology 20, the stretch section 5033 of locking piece 503
Free end passes through the restriction hole 401 of proximal sealing head 40, and the bending section 5034 of stretch section 5033 compresses the proximal end end of proximal sealing head 40
Face, and pressure section 5035 compresses the second of plugging ontology 20 surface for blocking unit 203, locks to realize to plugging ontology 20
Fixed, the distance of curved apex to the pressure section 5035 of 5034 proximal end of bending section is substantially equal to proximal sealing head 40 along plugging device at this time
The length of 100 longitudinal centre line.It is appreciated that the distance of curved apex to the pressure section 5035 of 5034 proximal end of bending section can also
To be greater than proximal sealing head 40 along the length of the longitudinal centre line of plugging device 100, at this point, bending section 5034 is close with proximal sealing head 40
End face separation is held, compresses the surface of the second closure unit 203 by the pressure section 5035 of stretch section 5033 only to realize locking.
In the present embodiment, the end face of the free end of pressure section 5035 and the circumferential surface of the free end are seamlessly transitted, to prevent
The free end of pressure section 5035 blocks unit 203 to second or other positions of heart generate damage.
In the present embodiment, the linkage section 5031 and stretch section 5033 of locking piece 503 be integrally formed and using have elasticity or
It is prepared by the material of shape memory function.The material of linkage section 5031 and stretch section 5033 can be selected from elastic stainless steel, NiTi copper
One of alloy, NiTi cobalt alloy, Nitinol, polylactic acid and nylon are several.In this way, stretch section 5033 can be outside
It is deformed under power effect, and passes through the restriction hole 401 of proximal sealing head 40 by external force traction stretch section 5033；When revocation is outer
When power, since stretch section 5033 is made of the material with elasticity or shape memory function, therefore stretch section 5033 restores to Fig. 3
Shown in nature, realize locking to plugging ontology 20.It is understood that the linkage section 5031 of locking piece 503 can also
Not use the material preparation with elasticity or shape memory function, it is only necessary to which stretch section 5033 is using with elasticity or shape note
Recall the material preparation of function.
In the present embodiment, the quantity of locking piece 503 is three, and the quantity of stretch section 5033 is also three.It is appreciated that lock
The quantity for determining part can also be the other quantities such as one, two, four, five, only the locking piece be needed to may be implemented to lock
Plugging ontology.It will also be appreciated that locking mechanism can also only include a locking piece, one locking piece includes
One linkage section and multiple stretch sections.Simultaneously it is understood that locking mechanism also may include multiple locking pieces, wherein at least
One locking piece includes multiple stretch sections.
It is understood that the shape of the linkage section of locking piece be not limited to it is rod-shaped, can also be other shapes, such as silk
Shape, sheet, tubulose or other irregular shapes.The shape of the stretch section of locking piece is also not limited to rod-shaped, or other
Shape, such as Filamentous, sheet or other irregular shapes.
Please refer to Fig. 4 and Fig. 5, the structure of the locking mechanism 50a of another embodiment of the present invention and the locking of above-described embodiment
Mechanism 50 is roughly the same, and including attachment base 501a and a locking piece 503a being set on attachment base 501a, difference is in
It is different in the shape of locking piece 503a and the locking piece 503 of above-described embodiment.
Locking piece 503a includes a linkage section 5031a and multiple stretch section 5033a connecting with linkage section 5031a.This
In embodiment, when no external force applies, linkage section 5031a is tubular structure, and each stretch section 5033a is piece sigmoid knot
Structure.Each stretch section 5033a includes supporting with the linkage section 5031a bending section 5034a being connected and with what bending section 5034a was connect
Splenium 5035a.
When locking mechanism 50a locks plugging ontology 20a, the free end of the stretch section 5033a of locking piece 503a
Across the restriction hole 401a of proximal sealing head 40a, the bending section 5034a of stretch section 5033a compresses the proximal end end of proximal sealing head 40a
Face, and pressure section 5035a compresses the surface for blocking unit 203a the second of plugging ontology 20a.In the present embodiment, due to stretch section
5033a is laminated structure, and bending section 5034a and the contact area of the proximal face of proximal sealing head 40a are larger, and pressure section
The contact surface of 5035a and the second closure unit 203a are more larger, thus, locking mechanism 50a can preferably make plugging ontology 20a
Closure unit be adjacent to defect.
It is also understood that the bending section 5034a of stretch section 5033a can not also be with the proximal face of proximal sealing head 40a
Contact, i.e. bending section 5034a can not apply pressure to proximal sealing head 40a, only compress plugging ontology 20a by pressure section 5035a
.
Referring to Fig. 6, the conveyer 200 of one embodiment of the invention includes ejector sleeve 60, tapered end 70 and locking pipe 80.Ejector sleeve 60
For the hollow structure with a lumen, tapered end 70 is also the hollow structure with a vestibule, and tapered end 70 is fixedly installed on ejector sleeve 60
Distal end, and the vestibule of tapered end 70 is connected to the lumen of ejector sleeve 60.Locking pipe 80 is arranged in the lumen and tapered end 70 of ejector sleeve 60
Hole is intracavitary, and locking pipe 80 can be moved relative to ejector sleeve 60 and tapered end 70 along the longitudinal centre line direction of ejector sleeve 60.
In the present embodiment, locking pipe 80 is hollow tubular, and the inner surface for locking the distal end of pipe 80 is provided with internal screw thread
(not shown).The internal screw thread is used to cooperate with the external screw thread of the attachment base 501 of the locking mechanism 50 of plugging device 100, makes to lock
Pipe 80 is detachably connected with locking mechanism 50, and the locking piece 503 of locking mechanism 50 can produce flexible deformation and be contained in locking
In the inner cavity of pipe 80.
In the present embodiment, the substantially I-shaped hollow tubular structure of tapered end 70, including push part 701, cannula portion 702 with
And the interconnecting piece 703 of connection push part 701 and cannula portion 702.Cannula portion 702 is sheathed in the distal side of ejector sleeve 60, and with
The distal end of ejector sleeve 60 is fixedly connected；Ejector sleeve 60 can drive tapered end 70 to move along the longitudinal centre line direction of ejector sleeve 60, and tapered end
70 push part 701 can apply pressure to plugging device 100, deform the plugging ontology 20 of plugging device 100 and form closure unit.
Conveyer 200 further includes connecting filament 90, offers connecting hole 7031 on the interconnecting piece 703 of tapered end 70.Connecting filament 90
To have the filamentous there are two free end, after connecting filament 90 folds, two free ends of connecting filament 90 are fixedly installed on tapered end
In 70 cannula portion 702, the remainder of connecting filament 90 can be bypassed from the distal end of the push part 701 of tapered end 70, and be worn simultaneously
The plugging ontology 20 of plugging device 100 is crossed, the connecting hole 7031 of interconnecting piece 703 can be finally passed through and is sheathed on locking pipe 80.
Conveyer 200 further includes sheath 91, and sheath 91 is sheathed on outside ejector sleeve 60 and tapered end 70 and for accommodating plugging device
100。
In the present embodiment, the outer diameter of locking pipe 80 is less than the internal diameter in the restriction hole 401 of the proximal sealing head 40 of plugging device 100,
It can be connect across hole 401 is limited with locking mechanism 50 to lock pipe 80.It should also be understood that the push part 701 of tapered end 70
Internal diameter be less than proximal sealing head 40 outer diameter, thus prevent proximal sealing head 40 enter push part 701 lumen in.
Plugging system 300 of the invention includes plugging device 100 and the conveyer 200 for conveying plugging device 100.It ties below
Attached drawing is closed to be further elaborated the course of work of plugging system 300 of the invention.
Referring to Fig. 7, firstly, by the inner cavity for the sheath 91 for being placed in conveyer 200 after 100 radial compression of plugging device.Tool
Body, firstly, connecting filament 90 passes through the proximal end of plugging ontology 20, and continues across the connecting hole 7031 of tapered end 70 and be sheathed on lock
Determine on pipe 80；Secondly, the distal end for locking pipe 80 and the attachment base 501 of the locking mechanism 50 of plugging device 100 are carried out by screw thread
Connection, locking piece 503 generate flexible deformation and are contained in the inner cavity of locking pipe 80；Then, locking pipe 80 is pushed, locking is managed
80 drive plugging ontologies 20 are distally-oriented to distal end movement, simultaneously as connecting filament 90 passes through the proximal end of plugging ontology 20, so
Plugging ontology 20 generates stretcher strain under the collective effect of locking pipe 80 and connecting filament 90；Then, ejector sleeve 60 is proximally pulled,
Make ejector sleeve 60 that tapered end 70 be driven to move to the near end, and then drives plugging device 100 and locking pipe 80 to accommodate together by connecting filament 90
Into in the inner cavity of sheath 91.Using femoral venous puncture, the distal end of seal wire is simultaneously transported to lesion locations by guiding guide wires therein (not shown),
Establish delivery track.The plugging device 100 of the distal end of conveyer 200 and position in the inner is pushed to lesion position together along seal wire
It sets.
Referring to Fig. 8, proximally pulling sheath 91 when plugging system 300 reaches lesion locations, reveal plugging device 100
Out outside sheath 91.Due to locking the collective effect of pipe 80 and connecting filament 90, plugging ontology 20 is still within stretcher strain state.
Fig. 9 and Figure 10 are please referred to, pulls locking pipe 80 mobile towards proximal end, locking pipe 80 drives plugging device 100 to move towards proximal end
The distal end end face of the dynamic push part 701 that tapered end 70 is supported up to the proximal face of the proximal sealing head 40 of plugging device 100.Continue to close
End pulls locking pipe 80, while the distal end end face of push part 701 resists proximal sealing head 40, and plugging ontology 20 is made to start the formation that relaxes
First blocks unit 202 and the second closure unit 203, and the first closure unit 202 and the second closure unit 203 support respectively
In the two sidewalls of defect point atrial septum.
Figure 11 is please referred to, spin locking pipe 80 separates locking pipe 80 with the attachment base 501 of locking mechanism 50.Pull lock
Determine pipe 80 to move to the near end, because locking pipe 80 has been separated with attachment base 501 at this time, plugging device 100 is remained stationary, directly
It is discharged completely to the locking piece 503 being contained in locking 80 lumen of pipe.Because locking piece 503, which uses, has shape memory function
Material preparation, when locking piece 503 is discharged from locking pipe 80, when locking piece 503 restores to no external force as shown in Figure 3 to apply
Natural shape, pressure section 5035 compress the surface of the second closure unit 230, realize the locking to plugging ontology 20.
Figure 12 is please referred to, locking pipe 80 is pulled on and is moved to the near end with respect to ejector sleeve 60, until locking pipe 80 no longer covers
The connecting hole 7031 of tapered end 70, connecting filament 90 are detached from locking pipe 80 automatically.Conveyer 200 divides with plugging device 100 completely at this time
From so as to from individually recalling conveyer 200 in vivo.So far, the course of work of plugging system 300 terminates.
It is detachably connected between the attachment base 501 of locking mechanism 50 and locking pipe 80 by screw thread realization in the present invention, it can
With understanding, attachment base and locking pipe can also be using other detachable connection methods such as engaging.
It will also be appreciated that locking mechanism 50 can not also include attachment base 501, the locking piece 503 of locking mechanism 50
Distal end be fixedly connected with the distal end of distal end end socket 30 or plugging ontology 20, locking pipe 80 can directly with distal end end socket 30 or
The distal end of person's plugging ontology 20 is detachably connected, and locking piece 503 is contained in the lumen of locking pipe 80.
When being locked using locking mechanism 50 of the invention to plugging ontology 20, the pressure section 5035 of locking piece 503 is supported
The second of plugging ontology 20 surface for blocking unit 203 is pressed, since the resist force is applied in plugging ontology without being limited to closely
The application range of end seal end surface, resist force is larger, so that enabling the second of plugging ontology 20 to block unit 203 is adjacent to defect
Position improves block reliability.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies 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, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (14)
1. a kind of plugging device, plugging ontology, proximal sealing head including reticular zone cavity and the locking mechanism for being arranged in the cavity,
The proximal sealing head has the restriction hole penetrated through with the cavity, which is characterized in that the locking mechanism includes at least one lock
Determine part, the locking piece includes the linkage section that one end is connected with the plugging device distal end and is connected with the linkage section other end
At least one stretch section；The stretch section includes the bending section being connected with the linkage section and compresses with what the bending section was connected
Portion, when no external force applies, the proximal direction of the bending section towards the plugging device is bent, and the pressure section is substantially along vertical
The direction at the longitudinal centre line of the plugging device and the center far from the locking mechanism extends；When the locking mechanism is to described
When plugging ontology locks, the pressure section passes through the restriction hole of the proximal sealing head far from the end of the corresponding bending section,
The pressure section compresses the surface of the plugging ontology；
The plugging ontology is easily deformable reticular structure, and the distal end of the locking piece and the distal end of the plugging ontology are fixed
Connection.
2. plugging device according to claim 1, which is characterized in that when the locking mechanism locks the plugging ontology
When, the bending section compresses the proximal face of the proximal sealing head.
3. plugging device according to claim 1, which is characterized in that the quantity of the locking piece is at least two, Mei Gesuo
State locking piece be it is rod-shaped, each locking piece includes the linkage section and a stretch section.
4. plugging device according to claim 1, which is characterized in that the quantity of the locking piece is one, the locking piece
Including a linkage section and at least two stretch sections, the linkage section is tubular structure, and each stretch section is equal
For laminated structure.
5. plugging device according to claim 1, which is characterized in that the stretch section uses the material with shape memory function
Material preparation.
6. plugging device according to claim 1, which is characterized in that the material of the stretch section is selected from elastic stainless steel, nickel
One of CTB alloy, NiTi cobalt alloy, Nitinol, polylactic acid and nylon are several.
7. plugging device according to claim 1, which is characterized in that end of the pressure section far from the corresponding bending section
Portion is free end, and the circumferential surface of the end face of the free end and the free end seamlessly transits.
8. plugging device according to claim 1, which is characterized in that the locking mechanism further includes attachment base, it is described at least
One locking piece is set to one end of the attachment base, and the other end of the attachment base is connected with the distal end of the plugging device, institute
It states and is provided with external screw thread on the side of attachment base.
9. plugging device according to claim 1, which is characterized in that the plugging device further includes distal end end socket, the locking
Mechanism is connected with the distal end end socket.
10. a kind of conveyer, for conveying plugging device as claimed in any one of claims 1-9 wherein, which is characterized in that described defeated
Sending device includes hollow locking pipe, and the distal end of the locking pipe is used to accommodate the locking mechanism and enters the plugging ontology
Distal end in cavity with the plugging device is detachably connected.
11. conveyer according to claim 10, which is characterized in that it is described locking pipe distal end be equipped with for the lock
Determine the internal screw thread that the distal end of mechanism is detachably connected.
12. conveyer according to claim 10, which is characterized in that the conveyer further includes hollow sheath, is arranged in
Ejector sleeve in the sheath, the tapered end and connecting filament for being fixedly arranged on the ejector sleeve distal end, the locking pipe be arranged in the ejector sleeve and
In the tapered end, one end of the connecting filament is fixed on the tapered end.
13. a kind of plugging system, including plugging device as claimed in any one of claims 1-9 wherein and as claimed in claim 10
Conveyer, the conveyer further include hollow sheath, the ejector sleeve being arranged in the sheath, the lock for being fixedly arranged on the ejector sleeve distal end
Head and connecting filament, the locking pipe are arranged in the ejector sleeve and the tapered end, and the distal end of the locking pipe enters the closure
It is detachably connected in the cavity of ontology and with the distal end of the plugging device, the locking mechanism of the plugging device is contained in the locking
In the lumen of pipe, one end of the connecting filament is fixed on the tapered end, and the other end passes through the plugging device rear enclosure in the lock
Determine on pipe.
14. plugging system according to claim 13, which is characterized in that the distal end of the locking pipe is equipped with internal screw thread, institute
The distal end of locking mechanism is stated equipped with the external screw thread with the screw-internal thread fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511033594.7A CN106923872B (en) | 2015-12-31 | 2015-12-31 | Plugging device, conveyer and plugging system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511033594.7A CN106923872B (en) | 2015-12-31 | 2015-12-31 | Plugging device, conveyer and plugging system |
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| CN106923872B true CN106923872B (en) | 2019-10-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109498074A (en) * | 2019-01-04 | 2019-03-22 | 上海形状记忆合金材料有限公司 | Method Wholly-degradable plugging device dedicated driving means and its connect with plugging device |
| CN110507373A (en) * | 2019-07-08 | 2019-11-29 | 江苏省肿瘤医院 | A kind of medical plugging system |
| CN114642467A (en) * | 2020-12-17 | 2022-06-21 | 先健科技(深圳)有限公司 | Plugging device and plugging system |
| CN113180768A (en) * | 2021-04-25 | 2021-07-30 | 上海锦葵医疗器械股份有限公司 | Stopper conveying device |
| CN117257365B (en) * | 2023-11-21 | 2024-02-02 | 山东瑞安泰医疗技术有限公司 | Nickel-titanium-copper plugging device with low nickel content, and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1584913A1 (en) * | 1988-07-11 | 1990-08-15 | Сибирский Физико-Технический Институт При Томском Государственном Университете Им.В.В.Куйбышева | Arrangement for closing fistulae of hollow organs |
| CA2563298A1 (en) * | 2004-05-07 | 2005-11-24 | Nmt Medical, Inc. | Catching mechanisms for tubular septal occluder |
| US10039536B2 (en) * | 2012-11-16 | 2018-08-07 | W. L. Gore & Associates, Inc. | Implantable medical device deployment system |
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