CN109350161A - A kind of spring ring Electromagnetically releasable device - Google Patents
A kind of spring ring Electromagnetically releasable device Download PDFInfo
- Publication number
- CN109350161A CN109350161A CN201811183982.7A CN201811183982A CN109350161A CN 109350161 A CN109350161 A CN 109350161A CN 201811183982 A CN201811183982 A CN 201811183982A CN 109350161 A CN109350161 A CN 109350161A
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- China
- Prior art keywords
- spring ring
- push rod
- annular magnet
- pilot pin
- coil
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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, 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
- A61B17/12109—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, 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
- A61B17/1214—Coils or wires
-
- 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
- A61B2017/1205—Introduction devices
- A61B2017/12054—Details concerning the detachment of the occluding device from the introduction device
- A61B2017/12086—Details concerning the detachment of the occluding device from the introduction device magnetically detachable
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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)
- Magnetic Resonance Imaging Apparatus (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a kind of spring ring Electromagnetically releasable devices comprising the push rod in spring ring, conduit, the pilot pin of magnetism and setting conduit, the end of spring ring have joint portion, offer card slot on joint portion；The end of push rod offers the receiving hole for accommodating joint portion；The end of push rod is also arranged with annular magnet and coil, and annular magnet is flexibly connected with push rod, and the location hole through receiving hole and push rod outer surface is offered on push rod；Pilot pin can be accommodated in location hole and card slot；When annular magnet is located at latched position, pilot pin is limited in location hole and card slot by annular magnet；When annular magnet is moved to unlocked position from latched position under the promotion of coil, pilot pin can be exited from card slot.Before spring ring is freed, spring ring can be engaged reliablely and stablely with push rod the present invention；When needing to free, annular magnet is pushed into unlocked position using magnetic force and realizes instantaneously freeing for spring ring, improves the riding position accuracy of spring ring.
Description
Technical field
The present invention relates to medical instruments fields, and in particular to a kind of spring ring Electromagnetically releasable device.
Background technique
Since the 1980s, carry out aneurysm embolization clinically by interventional technique, is using Detachable balloons in early days
As embolic infarction aneurysm, but sacculus is more difficult to adapt to shape in irregular tumor, easily bursts aneurysm or cannot comprehensive bolt
Fill in aneurysm.And aneurysm cavity shape can then be filled comprehensively and be adapted to spring ring, therefore with spring ring come aneurysm embolization
Have become aneurysmal essential therapeutic arsenals.
It in the aneurysmal intervention operation of Coil embolization, needs different sizes, different three-dimensional or two-dimensional shapes bullets
Spring coil is transported in knurl descendingly, until the intracorporal spring of tumor can densely clog entire aneurysm.It is clinically every
The aneurysmal intervention operation of example usually requires several to more than ten spring rings, could complete the fine and close filling of knurl.It is led in use
Pipe is established on the basis of channel, and the filling of each spring ring requires the step by conveying, putting, free and withdrawing push rod
Suddenly, the operation duration for conveying, putting and freeing three steps is to establish situation and the clinical manipulation water of doctor according to channel
It is determined in terms of equality, the time of freeing of spring ring will affect entire operating time.
Freeing need to disconnect at silk (push rod) and spring ring contact (main contact) as embolism spring ring pushing away.After disconnection
Silk is pushed away to extract out by conduit.According to the needs of embolism volume and density, doctor can continue to lead other embolism spring rings by micro-
Pipe is pushed into and frees in hemangioma.Mainly have following three kinds of embolisms spring ring ways of relief at present: hydrolysis is de-, electrolysis is de- and machine
Tool is freed.De- spring ring is hydrolyzed since its controlling is poor, clinical application is less；Most commonly used Matrix detachable coil in clinic
It there is a problem that freeing overlong time mostly or to free the time unstable, affect operating time.Moreover, the de- master of electrolysis connects
Point is mainly formed by welding, needs chemistry fusing main contact, therefore there are the risks of injury of blood vessel；Machinery is freed in spring ring
Simple buckle-type design reduces during clogging although being able to achieve instantaneously freeing for spring ring to the controllable of spring ring
Property, especially it is difficult to pull back after spring ring slide aperture or promotes.Patent document 1(Publication No. CN107951525A) it discloses
A kind of machinery kickoff mechanism uses the second protrusion of core filaments the first lug boss of Lock spring circle and push rod in the axial direction
Portion locks or unlocks the connection of push rod and spring ring using core filaments mobilizable inside push rod, to free spring ring, still
The manufacturing cost of core filaments is high, and matching requirements are high, and after spring ring is freed, the second lug boss is very likely right when push rod exits
First lug boss generates interference, so as to cause the riding position for changing the spring ring freed, influences the accurate of riding position
Property, limit the application of such mechanical kickoff mechanism.
Summary of the invention
The purpose of the present invention is to solve the above problem, a kind of spring ring Electromagnetically releasable device is provided, which can be with
Steadily spring ring is conveyed into the position for needing vascular occlusion in human body, then frees spring ring easily, mode of operation is simple,
It is convenient, blood vessel will not be caused to damage.Specific technical solution is as follows.
A kind of spring ring Electromagnetically releasable device comprising the push rod in spring ring, conduit and setting conduit, feature exist
In: the end of the spring ring has joint portion, offers card slot on the joint portion；The end of the push rod, which offers, to be used for
The receiving hole at the joint portion is accommodated, the receiving hole is axially extending along the push rod；The end of the push rod is also arranged
There are annular magnet and coil, compared to the coil closer to the spring ring, the coil pushes away the annular magnet with described
Bar is fixedly connected, and the annular magnet is flexibly connected with the push rod and can be along the axial movement of the push rod, the push rod
Position corresponding to the card slot offers the location hole through the receiving hole and the push rod outer surface, the location hole phase
Than in the coil closer to the spring ring；The spring ring Electromagnetically releasable device further includes having the magnetic pilot pin of tool,
The pilot pin can be accommodated in the location hole and the card slot；When the annular magnet is located at latched position, institute
It states annular magnet and at least partly covers the location hole, the pilot pin is limited to the location hole and institute by the annular magnet
It states in card slot, the spring ring and the push rod are connected together by the pilot pin；When the annular magnet is in the coil
Promotion under when being moved to unlocked position from latched position, the pilot pin can exit from the slot, so that the spring
The joint portion of circle can freely be exited from the receiving hole of the push rod.
Further, limit claw is additionally provided on the push rod, the limit claw is for protecting the annular magnet
It holds in latched position, and the limit to the annular magnet can be released when the limit claw is located at except the conduit
System.
Further, the limit claw is elastic card claw, when the limit claw is located in the conduit, the limit
Position claw by the conduit constraint and the annular magnet is maintained at latched position, when the limit claw be located at described in
When except conduit, the limit claw is opened in the elastic force effect of itself to release the limitation to the annular magnet.
Further, the position corresponding to the pilot pin is arranged in the limit claw, when the pilot pin is from described
The limit claw is connected to after exiting in card slot.It can prevent pilot pin from completely disengaging push rod in this way and be retained in the body of human body
It is interior.
Further, hierarchic structure is arranged away from the side of the coil in the pilot pin, when the pilot pin is from described
The end that the rear annular magnet is exited in card slot is clamped the hierarchic structure.It is completely de- that it can be better protected from pilot pin in this way
The internal of human body is retained in from push rod.
Further, the card slot has the first inclined surface close to the side of the coil, and the pilot pin corresponds to institute
It states the first inclined surface and is provided with the second inclined surface.The first inclined surface and the second inclined surface is arranged to be conducive to push away in spring ring from described
It is exited in the receiving hole of bar, even if pilot pin also can be in the first inclined surface when pilot pin does not exit from the slot completely
Under the action of exited from card slot.
Further, the annular flange of the restricted annular magnet position is arranged in the end of the push rod.It is annular in this way
Magnet will not fall off in the thrust by coil from the end of push rod.
Further, the joint portion is in the shape of a rod.
The beneficial effect of the embodiment of the present invention is: before spring ring is freed, spring ring can reliablely and stablely be connect with push rod
It closes, ensure that controllability of the spring ring before freeing；When needing to free, it is only necessary to it is powered to coil, it will using magnetic force
Annular magnet is pushed into unlocked position, and positioning, which fastens to exit from card slot, can be realized instantaneously freeing for spring ring, and push rod is from behaviour at this time
Interference will not be generated to spring ring by exiting as position, improve the riding position accuracy of spring ring.
Detailed description of the invention
Fig. 1 is the schematic diagram of spring ring Electromagnetically releasable device of the present invention (before spring ring is freed)；
Fig. 2 is the schematic diagram of spring ring Electromagnetically releasable device of the present invention (after spring ring is freed)；
Fig. 3 is the schematic diagram at spring ring and joint portion；
Fig. 4 is the schematic diagram that positioning is fastened.
In figure: spring ring 1, joint portion 11, card slot 12, the first inclined surface 121, conduit 2, push rod 3, receiving hole 31, positioning
Hole 32, annular flange 33, annular magnet 4, coil 5, pilot pin 6, hierarchic structure 61, the second inclined surface 62, limit claw 7.
Specific embodiment
Present invention is further described in detail with reference to the accompanying drawing.
Referring to Fig. 1-4, a kind of spring ring Electromagnetically releasable device comprising pushing away in spring ring 1, conduit 2 and setting conduit 2
Bar 3, the end of spring ring 1 have joint portion 11 in the shape of a rod, offer card slot 12 on joint portion 11；The end of push rod 3 opens up
There is the receiving hole 31 for accommodating joint portion 11, receiving hole 31 is axially extending along the push rod 3；The end of the push rod 3
Also be arranged with annular magnet 4 and coil 5, annular magnet 4 compared to coil 5 closer to spring ring 1, annular magnet 4 and coil 5 it
Between settable flange to prevent annular magnet 4 and coil 5 from contacting, coil 5 is fixedly connected with push rod 3, annular magnet 4 and push rod 3
It is flexibly connected and can offer through receiving hole 31 and push away along the axial movement of push rod 3, the position that push rod 3 corresponds to card slot 12
The location hole 32 of 3 outer surface of bar, the location hole 32 is compared to coil 5 closer to spring ring 1；Spring ring Electromagnetically releasable device is also
It include the magnetic pilot pin 6 of tool, pilot pin 6 can be accommodated in location hole 32 and card slot 12；When annular magnet 4 is located at
When latched position, position shown in Fig. 1, annular magnet 4 at least partly covers location hole 32, and annular magnet 4 limits pilot pin 6
It is scheduled in location hole 32 and card slot 12, spring ring 1 and push rod 3 are connected together by pilot pin 6 at this time；When annular magnet 4 is online
When being moved to unlocked position from latched position under the promotion of circle 5, pilot pin 6 can be exited from card slot 12, so that spring ring 1 connects
Conjunction portion 11 can freely be exited from the receiving hole 31 of push rod 3.
The working principle of spring ring Electromagnetically releasable device of the invention is as follows: when annular magnet 4 is located at latched position, ring
Pilot pin 6 is limited in location hole 32 and card slot 12 by the inner wall of shape magnet, and spring ring 1 and push rod 3 are clamped by pilot pin 6 at this time
Together, spring ring 1 follows the movement of push rod 3 and moves, and operator, which utilizes, passes through mobile conduit 2 and/or push rod 3 for spring
Circle 1 is sent at designated position, such as aneurysmal position.After spring ring 1 moves in place, it is powered to coil 5, coil 5
Thrust is generated to annular magnet 4 and pilot pin 6, annular magnet 4 is mobile to release the limitation for fastening 6 to positioning to unlocked position, when
After annular magnet 4 is removed, the positioning of magnetic is fastened 6 and is exited from card slot 12 under the attraction that the thrust of coil 5 and positioning are fastened, this
When spring ring joint portion 11 can freely be exited from the receiving hole 31 of push rod 3, operator is by push rod 3 to far from spring ring
1 direction pulls, that is, realizes the operation of freeing of spring ring, and when joint portion 11 of spring ring is exited from receiving hole 31 will not
Any interference of 6 generations is fastened with push rod or positioning, therefore can be improved the accuracy of spring ring riding position.Positioning fastens 6 from card
Attracted after being exited in slot 12 by annular magnet 4 and is fixed on annular magnet 4.Meanwhile when not needing to free spring ring, by ring
Shape magnet is stably maintained at latched position, can be powered to coil 5, generate the magnetic induction line opposite with when freeing, so that coil 5
Annular magnet 4 is attracted and is maintained at latched position.
Wherein, joint portion 11 and spring ring 1 can be integrally formed, are also possible to separate structure and combine.
It is unlimited to position structure, the shape fastened, as long as positioning, which fastens 6, can be stuck in card slot 12 and location hole 32 to limit joint portion 11 and push away
Relative motion between bar 3.
In preferred embodiments of the present invention, limit claw 7 is additionally provided on push rod 3, limit claw 7 is used for annular magnetic
Iron 4 is maintained at latched position, and the limitation to annular magnet 4 can be released when limiting claw 7 and being located at except conduit 2.Example
Such as, limit claw 7 is arranged the position between annular magnet 4 and coil 5, limit claw 7 can by swing out or along
The mode of push rod 3 circumferentially rotated carries out clamping to annular magnet 4 or releases clamping.It should be noted that limit claw 7
Structure and installation site can according to need to be arranged, as long as annular magnet 4 can be maintained at latched position by it, and need
When release limitation to annular magnet 4.Limit claw 7 can be by being operated through the structures such as bracing wire of push rod 3.
In preferred embodiments of the present invention, the limit claw 7 is elastic card claw, and limit claw 7 is used for annular magnetic
Iron 4 is maintained at latched position, and the limitation to annular magnet 4 can be released when limiting claw 7 and being located at except conduit 2, when
When limit claw 7 is located in conduit 2, claw 7 is limited by the constraint of conduit 2, annular magnet 4 is maintained at latched position, when
When limit claw 7 is located at except conduit 2 under the promotion of push rod 3, limit claw 7 is outwardly opened in the elastic force effect of itself to solve
Except the limitation to annular magnet 4.The structure that claw can be simplified using elastic card claw is provided the portability of operation, works as needs
When freeing spring ring, the end of push rod 3 is released from conduit 2, limit claw 7 is completely exposed to be beaten automatically when except conduit 2
It opens, thrust is formed to the energization of coil 5 at this time, annular magnet 4 can be moved into unlocked position.
In preferred embodiments of the present invention, the position corresponding to pilot pin 6 is arranged in limit claw 7, when pilot pin 6 from
Limit claw 7 is connected to after exiting in the card slot 12.It can prevent pilot pin 6 from completely disengaging push rod 3 and being retained in people in this way
Body it is internal.Wherein limit claw 7 may include having the multiple tines being distributed along 3 even circumferential of push rod, it is only necessary to wherein
The position that part tine corresponds to pilot pin 6 is arranged.
In preferred embodiments of the present invention, hierarchic structure 61 is arranged away from the side of coil 5 in pilot pin 6, when pilot pin 6
The end that rear annular magnet 4 is exited from card slot 12 is connected to the hierarchic structure 61.It is complete pilot pin can be better protected from this way
Total detachment push rod and be retained in the internal of human body.
In preferred embodiments of the present invention, card slot 12 has the first inclined surface 121, pilot pin 6 close to the side of coil 5
First inclined surface 121 is provided with the second inclined surface 62.The first inclined surface 121 and the second inclined surface 62 is arranged to be conducive to
Spring ring 1 is exited from the receiving hole 31 of the push rod 3, even if when pilot pin does not exit from the slot completely, positioning
Bolt 6 can also be exited from card slot 12 under the action of the first inclined surface 121.
In preferred embodiments of the present invention, the end of push rod 3 is provided with the annular flange of limitation 4 position of annular magnet
33.Annular magnet 4 in this way will not fall off in the thrust by coil 5 from the end of push rod 3.
The embodiment of the present invention is described with above attached drawing, in the absence of conflict, the reality in the present invention
The feature applied in example and embodiment can be combined with each other.The invention is not limited to above-mentioned specific embodiment, above-mentioned tool
Body embodiment is only schematical, rather than limitation, those skilled in the art under the inspiration of the present invention,
Without breaking away from the scope protected by the purposes and claims of the present invention, many forms can be also made, these belong to this
Within the protection scope of invention.
Claims (8)
1. a kind of spring ring Electromagnetically releasable device comprising the push rod in spring ring, conduit and setting conduit, it is characterised in that:
The end of the spring ring has joint portion, offers card slot on the joint portion；The end of the push rod is offered for holding
Receive the receiving hole at the joint portion, the receiving hole is axially extending along the push rod；The end of the push rod is also arranged with
Annular magnet and coil, the annular magnet compared to the coil closer to the spring ring, the coil and the push rod
It is fixedly connected, the annular magnet is flexibly connected with the push rod and can be along the axial movement of the push rod, the push rod pair
The position of card slot described in Ying Yu offers the location hole through the receiving hole and the push rod outer surface, and the location hole is compared
In the coil closer to the spring ring；The spring ring Electromagnetically releasable device further includes having the magnetic pilot pin of tool, institute
Stating pilot pin can be accommodated in the location hole and the card slot；It is described when the annular magnet is located at latched position
Annular magnet at least partly covers the location hole, and the pilot pin is limited to the location hole and described by the annular magnet
In card slot, the spring ring and the push rod are connected together by the pilot pin；When the annular magnet is in the coil
When being moved to unlocked position from latched position under promotion, the pilot pin can exit from the slot, so that the spring ring
Joint portion can freely be exited from the receiving hole of the push rod.
2. a kind of spring ring Electromagnetically releasable device according to claim 1, which is characterized in that be additionally provided on the push rod
Claw is limited, the limit claw is used to for the annular magnet being maintained at latched position, and when the limit claw is located at
The limitation to the annular magnet can be released when except the conduit.
3. a kind of spring ring Electromagnetically releasable device according to claim 2, which is characterized in that the limit claw is elasticity
Claw, when the limit claw is located in the conduit, the limit claw by the conduit constraint and by the ring
Shape magnet is maintained at latched position, when except the limit claw being located at the conduit, bullet of the limit claw at itself
Power effect is opened to release the limitation to the annular magnet.
4. a kind of spring ring Electromagnetically releasable device according to claim 2 or 3, which is characterized in that the limit claw is set
It sets in the position for corresponding to the pilot pin, the limit claw is connected to after the pilot pin exits from the slot.
5. a kind of spring ring Electromagnetically releasable device according to claim 1, which is characterized in that the pilot pin is away from described
Hierarchic structure is arranged in the side of coil, and the end of the annular magnet is clamped institute after the pilot pin exits from the slot
State hierarchic structure.
6. a kind of spring ring Electromagnetically releasable device according to claim 1, which is characterized in that the card slot is close to the line
The side of circle has the first inclined surface, and the pilot pin corresponds to first inclined surface and is provided with the second inclined surface.
7. a kind of spring ring Electromagnetically releasable device according to claim 1, which is characterized in that the end of the push rod is arranged
The annular flange of the restricted annular magnet position.
8. a kind of spring ring Electromagnetically releasable device according to claim 1, which is characterized in that the joint portion is in the shape of a rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811183982.7A CN109350161B (en) | 2018-10-11 | 2018-10-11 | Electromagnetic releasing device for spring ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811183982.7A CN109350161B (en) | 2018-10-11 | 2018-10-11 | Electromagnetic releasing device for spring ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109350161A true CN109350161A (en) | 2019-02-19 |
| CN109350161B CN109350161B (en) | 2020-10-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811183982.7A Active CN109350161B (en) | 2018-10-11 | 2018-10-11 | Electromagnetic releasing device for spring ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109350161B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6315709B1 (en) * | 1998-08-07 | 2001-11-13 | Stereotaxis, Inc. | Magnetic vascular defect treatment system |
| US20060105014A1 (en) * | 2004-11-16 | 2006-05-18 | Microvention, Inc. | Compositions, systems and methods for treatment of defects in blood vessels |
| CN2833308Y (en) * | 2005-08-24 | 2006-11-01 | 江苏科技大学 | Electromagnetic locking device |
| CN106890012A (en) * | 2015-10-09 | 2017-06-27 | 埃瓦尔维公司 | The handle and its application method of delivery conduit |
| CN107041769A (en) * | 2016-06-10 | 2017-08-15 | 珠海神平医疗器械有限公司 | The apparatus and method of mechanical plug conveying |
-
2018
- 2018-10-11 CN CN201811183982.7A patent/CN109350161B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6315709B1 (en) * | 1998-08-07 | 2001-11-13 | Stereotaxis, Inc. | Magnetic vascular defect treatment system |
| US20060105014A1 (en) * | 2004-11-16 | 2006-05-18 | Microvention, Inc. | Compositions, systems and methods for treatment of defects in blood vessels |
| CN2833308Y (en) * | 2005-08-24 | 2006-11-01 | 江苏科技大学 | Electromagnetic locking device |
| CN106890012A (en) * | 2015-10-09 | 2017-06-27 | 埃瓦尔维公司 | The handle and its application method of delivery conduit |
| CN107041769A (en) * | 2016-06-10 | 2017-08-15 | 珠海神平医疗器械有限公司 | The apparatus and method of mechanical plug conveying |
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| Publication number | Publication date |
|---|---|
| CN109350161B (en) | 2020-10-16 |
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