CN104323812B - Structure for mechanically releasing implant in blood vessel - Google Patents
Structure for mechanically releasing implant in blood vessel Download PDFInfo
- Publication number
- CN104323812B CN104323812B CN201410504336.1A CN201410504336A CN104323812B CN 104323812 B CN104323812 B CN 104323812B CN 201410504336 A CN201410504336 A CN 201410504336A CN 104323812 B CN104323812 B CN 104323812B
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- Prior art keywords
- implant
- rear end
- blood vessel
- pipe
- free
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or 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
- A61B17/12109—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
- A61B17/12113—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel within an aneurysm
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B2017/1205—Introduction devices
- A61B2017/12054—Details concerning the detachment of the occluding device from the introduction device
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Reproductive Health (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Neurosurgery (AREA)
- Prostheses (AREA)
Abstract
The invention relates to a structure of a mechanical releaser for implants planted in blood vessels, in particular to a structure for mechanically releasing an implant in a blood vessel, which comprises an implant, release wires, a release tube and a push tube. The structure has the following characteristics: the tail of the implant is provided with an expanded rear end; the front end of the push tube is connected with a cylindrical chamber of the rear end of the release tube; the front end of the release tube is provided with a flat chamber, and the top end of the flat chamber is provided with a throat, the width of which is greater than the width of the expanded rear end; the sidewall of the release tube is located on the bottom of the expanded rear end, and is provided with a through hole for mounting a stop pin. The release method is simple and reliable, and the phenomenon of false release cannot take place. The process of pushing the implant is stable under the premise that the blood vessel does not relatively shift or rotate within a wide range; in the process of release, the implant is not pushed forward, the relative position between the implant and the blood vessel is not changed, and consequently, the delivery position of the implant can be controlled accurately.
Description
Technical field
The present invention relates to the structure for the mechanical kickoff mechanism of implant in implantable intravascular.
Background technology
Vascular implant is widely used in treatment cerebral aneurysm, arteriovenous malformation, or the inaccessible blood vessel connecting tumour etc..
Under the guiding of medical imaging device, implant is delivered to behind the specific region of human vas by conduit, extracts conduit out
Escape wire, then pulls out conduit, and implant is just freed in this specific region, to realize the obturation of this regional vessel.
At present, method freed by described machinery, and its major way has hydraulic pressure to free formula, section cascaded, coupling type etc..But prior art
In, the disadvantage that method freed by machinery is, during freeing, a little inevitably to be made by mechanical force due to freeing
With causing the displacement of implant, therapeutic effect can be affected.
ZL201210553003.9 patent of invention, is the system and method for machinery positioning vascular implant, such as
Shown in Fig. 9, the implant of this patent（90）Bar（94）, due to its ball（96）In circular locator（42）Cavity all not by
Fixing, therefore ball（96）In implant（90）During pushing, not only can be freely rotatable, and can be with respect to positioning
Device（42）Movable, impact operator controls locator（42）Ability, directly affect implant accurately fixed in target site
Position.
Content of the invention
It is an object of the present invention to provide implant can quickly, accurately, stably be positioned by one kind in intravascular；And can be reliable
Ground is freed.
The present invention is to solve above-mentioned technical problem, provides following technical proposal：Blood vessel implant freed by a kind of machinery
Structure, including implant, escape wire, frees pipe and pushes pipe, its characteristic is：The afterbody of described implant has flat expansion
Rear end；The described front end pushing pipe is connected with the circular cavity freeing pipe rear end；Described expansion rear end is arranged in cavity；Described
Free pipe front end and be provided with flat cavity, the top of this flat cavity has necking, width is more than expansion rear end；The described pipe of freeing
Side wall, positioned at expanding rear end bottom, is provided with the through hole for installing backing pin；State escape wire and pass through push pipe, head end stretches out cavity,
Its tail end is connected with the tail end pushing pipe.
The diameter that the width of the necking of described flat cavity is less than an escape wire is maximum with the expansion rear end of implant wide
Degree sum；And it is connected the Breadth Maximum sum of the mid portion expanding rear end with implant more than the diameter of an escape wire.
The width of described flat cavity be more than the expansion rear end of diameter and the implant of an escape wire maximum gauge it
With.
The width of the necking of described cavity be less than diameter and the implant of two escape wires expansion rear end Breadth Maximum it
With, and it is connected the Breadth Maximum sum of the mid portion expanding rear end with implant more than the diameter of two escape wires.
The width of described flat cavity be more than the expansion rear end of diameter and the implant of two escape wires maximum gauge it
With.
The tail end of described escape wire is welding or bonding or mechanical connection with the tail end connected mode pushing pipe.
Described push pipe be reducing conduit, its leading portion diameter be less than back segment diameter, in back segment and near escape wire with push away
Pipe junction is sent to have an annular notch.
Described free pipe with push pipe connected mode be weld, bonding or mechanical connection.
The described material freeing pipe is metal material or macromolecular material, and described metal material can be stainless steel or alloy
Material.
The material of described escape wire is Nitinol or stainless steel.
Compared with prior art, it is an advantage of the current invention that；This ways of relief is simple and reliable, will not occur vacation free show
As.The flat rear end that expands of implant is fixed with the relative position freeing pipe, and implant will not occur in a big way in blood vessel
Relative displacement or rotation, push process stabilization；There is no front push operation to implant during release, will not change implant with
The relative position of blood vessel, therefore, it is possible to accurately control the transfer position of implant.
Brief description
To describe the present invention with reference to the accompanying drawings and detailed description in detail；
Fig. 1 is the structural representation of the specific embodiment of the invention one
Fig. 2 is implant 1
Fig. 3 is the rear end 11 of implant 1（B is the Breadth Maximum expanding rear end）
Fig. 4 is to free pipe 4
Fig. 5 is the cut-away diagram freeing pipe（D is the width of cavity 41）
Fig. 6 is the push pipe of part
Fig. 7 is the notch 51 pushing pipe back segment
Fig. 8 is the structure chart of the specific embodiment of the invention two
Fig. 9 is background technology comparison diagram
Specific embodiment
Below according to embodiment and accompanying drawing, the present invention is described in further detail.
Embodiment one
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the structure of blood vessel implant freed by a kind of machinery, bag
Include implant 1, escape wire 3, push pipe 5 and free pipe 4.The afterbody of described implant 1 has flat expansion rear end 11；Described push away
The front end sending pipe 5 is connected with the circular cavity 42 freeing pipe 4 rear end, and connected mode can be welding, bonding or mechanical connection, institute
State and free pipe 4 front end and be provided with flat cavity 41, the material freeing pipe is metal material or macromolecular material, this flat cavity 41
Top has necking 42, and flat expansion rear end 11 is connected with flat cavity 41;The necking width D of described flat cavity 41
（As shown in Figure 5）Less than the width B expanding rear end 11（As shown in Figure 3）With two escape wires 3 diameter sum, and more than two solution
The diameter of running 3 is connected the Breadth Maximum sum of the mid portion expanding rear end 11 with implant.Due to two escape wires 3 and expansion
Big rear end 11 occupies the space of flat cavity 41 necking, frees the backing pin on pipe 4 and blocks implant and stretch into and frees pipe 4, described
Implant rear end 11 cannot separate with freeing pipe 4, only escape wire 3 after the necking of flat cavity 41 is fully drawn out, implant 1
Expand rear end 11 could extract at the necking freeing pipe 4, and implant 1 and free pipe 4 or and push pipe 5 between position
Fixing, therefore implant 1 will not occur significantly to rotate.
The material of described escape wire can be Nitinol or stainless steel, and described escape wire 3 is placed in the cavity pushing pipe 5
Interior, the head end of described escape wire 3 stretches out from the necking of flat cavity 41, and its tail end is connected with the tail end pushing pipe 5, connected mode
Can be welding, bonding or mechanical connection；Described push pipe 5 is the conduit of reducing, and leading portion diameter is less than back segment diameter.Described push away
The material sending pipe 5 can be metal material or macromolecular material.The leading portion pushing pipe 5 is thinner, is easy to pass through the blood vessel of bending, its
Back segment is thicker, has a good push performance, the back segment of described push pipe 5 and having with push pipe 5 junction near escape wire 3
The notch 51 of annular, by the notch that fractures, and by first extracting two escape wires out, can allow expansion rear end 11 in the contracting of flat cavity 41
Mouth has the space of extraction, then pulls out the method pushing pipe, frees operation with complete implant.
Embodiment two
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, the structure of blood vessel implant freed by a kind of machinery, bag
Include implant 1, escape wire 3, push pipe 5 and free pipe 4.The afterbody of described implant 1 has a flat expansion rear end 11, described pushes away
The front end sending pipe 5 is connected with the circular cavity 42 freeing pipe 4 rear end, and connected mode can be welding, bonding or mechanical connection, institute
State and free pipe 4 front end and be provided with flat cavity 41, the material freeing pipe is metal material or macromolecular material, this flat cavity 41
Top has necking 42, and the flat rear end 11 that expands is connected with flat cavity 41;The necking width of described flat cavity 41
Degree D（As shown in Figure 5）Less than the width B expanding rear end 11（As shown in Figure 3）With an escape wire 3 diameter sum, and be more than one
The diameter of bar escape wire 3 is connected the Breadth Maximum sum of the mid portion expanding rear end 11 with implant.Due to an escape wire 3
Occupy the space of flat cavity 41 necking with expansion rear end 11, free the backing pin on pipe 4 and block implant and stretch into and free pipe 4,
Described implant rear end 11 cannot separate with freeing pipe 4, and only escape wire 3, after the necking of flat cavity 41 is fully drawn out, is planted
Enter thing 1 expand rear end 11 could extract at the necking freeing pipe 4, and implant 1 and free pipe 4 or and push pipe 5 between
Position fix, therefore implant 1 will not occur significantly to rotate.
The material of described escape wire can be Nitinol or stainless steel, and described escape wire 3 is placed in the cavity pushing pipe 5
Interior, the head end of described escape wire 3 stretches out from the necking of flat cavity 41, and its tail end is connected with the tail end pushing pipe 5, connected mode
Can be welding, bonding or mechanical connection；Described push pipe 5 is the conduit of reducing, and leading portion diameter is less than back segment diameter.Described push away
The material sending pipe 5 can be metal material or macromolecular material.The leading portion pushing pipe 5 is thinner, is easy to pass through the blood vessel of bending, its
Back segment is thicker, has good push performance, and the back segment of described push pipe 5 and close escape wire 3 and push pipe 5 junction have ring
The notch 51 of shape, by the notch that fractures, and by first extracting two escape wires out, can allow expansion rear end 11 in the necking of flat cavity 41
There is the space of extraction, then pull out the method pushing pipe, free operation with complete implant, carry out implant frees behaviour
Make.
Claims (10)
1. the structure of blood vessel implant freed by a kind of machinery, including implant（1）, escape wire（3）, free pipe（4）And push
Pipe（5）, its characteristic is：Described implant（1）Afterbody have flat expansion rear end（11）；Described push is managed（5）Front end
With free pipe（4）The circular cavity of rear end（42）Connect；Described expansion rear end（11）It is arranged on flat cavity（41）Interior；Described solution
De- pipe（4）Front end is provided with flat cavity（41）, this flat cavity（41）Top there is necking, width be more than expand rear end
（11）；Described free pipe（4）Side wall, positioned at expand rear end（11）Bottom, is provided with for installing backing pin（2）Through hole（43）；
Described escape wire（3）Pass through and push pipe（5）, head end stretches out flat cavity（41）, its tail end with push pipe（5）Tail end connect.
2. a kind of machinery according to claim 1 free blood vessel implant structure it is characterised in that：Described flat lumen
Body（41）Necking width be less than an escape wire（3）Diameter and implant（1）Expansion rear end（11）Breadth Maximum it
With；And it is more than an escape wire（3）Diameter and implant（1）Connect and expand rear end（11）Mid portion Breadth Maximum it
With.
3. a kind of machinery according to claim 1 free blood vessel implant structure it is characterised in that：Described flat lumen
Body（41）Width be more than an escape wire（3）Diameter and implant（1）Expansion rear end（11）Maximum gauge sum.
4. a kind of machinery according to claim 1 free blood vessel implant structure it is characterised in that：Described flat lumen
Body（41）Necking width be less than two escape wires（3）Diameter and implant（1）Expansion rear end（11）Breadth Maximum it
With, and it is more than two escape wires（3）Diameter and implant（1）Connect and expand rear end（11）Mid portion Breadth Maximum it
With.
5. a kind of machinery according to claim 1 free blood vessel implant structure it is characterised in that：Described flat lumen
Body（41）Width be more than two escape wires（3）Diameter and implant（1）Expansion rear end（11）Maximum gauge sum.
6. a kind of machinery according to claim 1 free blood vessel implant structure it is characterised in that：Described escape wire
（3）Tail end with push pipe（5）Tail end connected mode be welding or bonding or mechanical connection.
7. a kind of machinery according to claim 1 free blood vessel implant structure it is characterised in that：Described push is managed
（5）It is the conduit of reducing, its leading portion diameter is less than back segment diameter, in back segment and near escape wire（3）Manage with pushing（5）Junction
There is an annular notch（51）.
8. a kind of machinery according to claim 1 free blood vessel implant structure it is characterised in that：Described free pipe
（4）Manage with pushing（5）Connected mode be welding, bonding or mechanical connection.
9. a kind of machinery according to claim 1 free blood vessel implant structure it is characterised in that：Described free pipe
（4）Material be metal material or macromolecular material.
10. a kind of machinery according to claim 1 free blood vessel implant structure it is characterised in that:Described free
Silk（3）Material be Nitinol or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410504336.1A CN104323812B (en) | 2014-09-28 | 2014-09-28 | Structure for mechanically releasing implant in blood vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410504336.1A CN104323812B (en) | 2014-09-28 | 2014-09-28 | Structure for mechanically releasing implant in blood vessel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104323812A CN104323812A (en) | 2015-02-04 |
| CN104323812B true CN104323812B (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410504336.1A Active CN104323812B (en) | 2014-09-28 | 2014-09-28 | Structure for mechanically releasing implant in blood vessel |
Country Status (1)
| Country | Link |
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| CN (1) | CN104323812B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109907792A (en) * | 2019-04-22 | 2019-06-21 | 苏州优医港科技有限公司 | A mechanical release structure, implant and mechanical release device |
| CN116983041A (en) * | 2022-04-25 | 2023-11-03 | 深圳佰特微医疗科技有限公司 | Medical instrument pushing device and medical instrument pushing system |
| CN117297834A (en) * | 2023-11-01 | 2023-12-29 | 苏州铨通医疗科技有限公司 | Implant flexible delivery device and implant release method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5601600A (en) * | 1995-09-08 | 1997-02-11 | Conceptus, Inc. | Endoluminal coil delivery system having a mechanical release mechanism |
| US5895391A (en) * | 1996-09-27 | 1999-04-20 | Target Therapeutics, Inc. | Ball lock joint and introducer for vaso-occlusive member |
| US20060116714A1 (en) * | 2004-11-26 | 2006-06-01 | Ivan Sepetka | Coupling and release devices and methods for their assembly and use |
| KR20090008347A (en) * | 2006-04-17 | 2009-01-21 | 마이크로 테라퓨틱스 인코포레이티드 | Systems and Methods for Mechanically Positioning Endovascular Inserts |
| CN102871700B (en) * | 2012-10-09 | 2015-04-29 | 加奇生物科技(上海)有限公司 | Braided part system for embolizing aneurysm |
| GB201318403D0 (en) * | 2013-10-17 | 2013-12-04 | Cook Medical Technologies Llc | Release mechanism |
| CN204192688U (en) * | 2014-09-28 | 2015-03-11 | 上海君联医疗设备有限公司 | The structure of blood vessel implant freed by a kind of machinery |
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2014
- 2014-09-28 CN CN201410504336.1A patent/CN104323812B/en active Active
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| CN104323812A (en) | 2015-02-04 |
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