CN104323812A - Structure for mechanically releasing implant in blood vessel - Google Patents
Structure for mechanically releasing implant in blood vessel Download PDFInfo
- Publication number
- CN104323812A CN104323812A CN201410504336.1A CN201410504336A CN104323812A CN 104323812 A CN104323812 A CN 104323812A CN 201410504336 A CN201410504336 A CN 201410504336A CN 104323812 A CN104323812 A CN 104323812A
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- CN
- China
- Prior art keywords
- implant
- rear end
- blood vessel
- pipe
- freed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
-
- 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
-
- 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
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 of the mechanical kickoff mechanism for the implant in implantable intravascular.
Background technology
Vascular implant is widely used in treatment cerebral aneurysm, arteriovenous malformotion, or the inaccessible blood vessel etc. connecting tumor.Under the guiding of medical imaging device, implant is delivered to the specific region of human vas by conduit after, extract the escape wire of conduit out, then extract conduit out, 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 in prior art, the disadvantage that method freed by machinery is, is freeing in process, owing to freeing the effect being a little inevitably subject to mechanical force, causes the displacement of implant, can affect therapeutic effect.
ZL201210553003.9 patent of invention, it is the system and method for machinery location vascular implant, as shown in Figure 9, the bar (94) of the implant (90) of this patent, because the cavity of its ball (96) at the localizer (42) of circle is not all fixed, therefore ball (96) implant (90) push process in, not only can freely rotate, and can move forward and backward relative to localizer (42), affect the ability that operator controls localizer (42), directly affect the accurate location of implant at target site.
Summary of the invention
The object of the invention is to provide one and implant can be located fast, accurately, stably at Ink vessel transfusing; And can reliably free.
The present invention, for solving the problems of the technologies described above, provides following technical proposal: the structure of blood vessel implant freed by a kind of machinery, and comprise implant, escape wire, free pipe and push pipe, its characteristic is: the afterbody of described implant has flat expansion rear end; The front end of described propelling movement pipe is connected with the circular cavity of freeing pipe rear end; Described expansion rear end is arranged in cavity; Described pipe front end of freeing is provided with flat cavity, and the top of this flat cavity has reducing, and width is greater than expansion rear end (11); Described sidewall of freeing pipe, being positioned at and expanding bottom rear end, being provided with the through hole for installing backing pin; State escape wire through pushing pipe, head end stretches out cavity, and its tail end is connected with the tail end pushing pipe.
The width of the reducing of described cavity is less than the diameter of an escape wire and the expansion rear end Breadth Maximum sum of implant; And the diameter being greater than an escape wire is connected the Breadth Maximum sum of the mid portion expanding rear end with implant.
The width of described cavity is greater than the maximum gauge sum of the diameter of an escape wire and the expansion rear end of implant.
The width of the reducing of described cavity is less than the diameter of two escape wires and the expansion rear end Breadth Maximum sum of implant, and the diameter being greater than two escape wires is connected the Breadth Maximum sum of the mid portion expanding rear end with implant.
The width of described cavity is greater than the maximum gauge sum of the diameter of two escape wires and the expansion rear end of implant.
The tail end of described escape wire and the tail end connected mode that pushes pipe are for weld or bonding or be mechanically connected.
Described propelling movement pipe is the conduit of reducing, and its leading portion diameter is less than back segment diameter, has the notch that annular at back segment and near escape wire and propelling movement pipe junction.
Described free pipe with push pipe connected mode be weld, bonding, be mechanically connected or be socketed.
Described material of freeing pipe is metal material or macromolecular material, and described metal material can be rustless steel or alloy material.
The material of described escape wire is Nitinol or rustless steel.
Compared with prior art, the invention has the advantages that; This ways of relief is simple and reliable, and the phenomenon that vacation is freed can not occur.The flat expansion rear end of implant is fixed with the relative position of freeing pipe, and implant, at blood vessel, relative displacement in a big way or rotation can not occur, and pushes process stabilization; In dispose procedure, front push operation be there is no to implant, the relative position of implant and blood vessel can not be changed, therefore, it is possible to accurately control the transfer position of implant.
Accompanying drawing explanation
The present invention is described in detail below in conjunction with the drawings and specific embodiments;
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(B of implant 1 is the Breadth Maximum expanding rear end)
Fig. 4 is that to free pipe 4 Fig. 5 be the cut-away diagram (D is the width of cavity 41) freeing pipe
Fig. 6 is the propelling movement 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
detailed description of the invention
According to embodiment and accompanying drawing, the present invention is described in further detail below.
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, comprises implant 1, escape wire 3, pushes pipe 5 and free pipe 4.The afterbody of described implant 1 has flat expansion rear end 11; The front end of described propelling movement pipe 5 is connected with the circular cavity 42 of freeing pipe 4 rear end; connected mode can for welding, bonding, mechanical connection or socket; described pipe 4 front end of freeing is provided with flat cavity 41; the material of freeing pipe is metal material or macromolecular material; the top of this cavity 41 has reducing 42, and flat expansion rear end 11 is connected with flat cavity 41; The reducing width D (as shown in Figure 5) of described cavity 41 is less than the width B (as shown in Figure 3) and two escape wire 3 diameter sums that expand rear end 11, and the diameter being greater than two escape wires 3 is connected the Breadth Maximum sum of the mid portion expanding rear end 11 with implant.Because two escape wires 3 and expansion rear end 11 occupy the space of cavity 41 reducing, implant of blocking the backing pin of freeing on pipe 41 stretches into frees pipe 4, described implant rear end 11 cannot separate with freeing pipe 4, after only having escape wire 3 to extract out completely from the reducing of cavity 41, the expansion rear end 11 of implant 1 could be extracted out from the reducing freeing pipe 4, and implant 1 and free pipe 4 or and the position pushed between pipe 5 fix, therefore implant 1 can not occur significantly to rotate.
The material of described escape wire can be Nitinol or rustless steel, described escape wire 3 is placed in the cavity of propelling movement pipe 5, the head end of described escape wire 3 stretches out from the reducing of cavity 41, and its tail end is connected with the tail end pushing pipe 5, and connected mode can be welding, bonding or mechanical connection; Described propelling movement pipe 5 is conduits of reducing, and leading portion diameter is less than back segment diameter.The material of described propelling movement pipe 5 can be metal material or macromolecular material.The leading portion pushing pipe 5 is thinner, be convenient to pass through bending blood vessel, its back segment is thicker, there is good propelling movement performance, the back segment of described propelling movement pipe 5 and near escape wire 3 with push pipe 5 junction and have the notch 51 of annular, by the notch that fractures, and by first extracting two escape wires out, allow and expand rear end 11 there is in the reducing of cavity 41 space of extraction, then extract the method pushing pipe out, free operation with what 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, comprises implant 1, escape wire 3, pushes pipe 5 and free pipe 4.The afterbody of described implant 1 has flat expansion rear end 11; the front end of described propelling movement pipe 5 is connected with the circular cavity 42 of freeing pipe 4 rear end; connected mode can for welding, bonding, mechanical connection or socket; described pipe 4 front end of freeing is provided with flat cavity 41; the material of freeing pipe is metal material or macromolecular material; the top of this cavity 41 has reducing 42, and flat expansion rear end 11 is connected with flat cavity 41; The reducing width D (as shown in Figure 5) of described cavity 41 is less than the width B (as shown in Figure 3) and an escape wire 3 diameter sum that expand rear end 11, and the diameter being greater than an escape wire 3 is connected the Breadth Maximum sum of the mid portion expanding rear end 11 with implant.Because an escape wire 3 and expansion rear end 11 occupy the space of cavity 41 reducing, implant of blocking the backing pin of freeing on pipe 41 stretches into frees pipe 4, described implant rear end 11 cannot separate with freeing pipe 4, after only having escape wire 3 to extract out completely from the reducing of cavity 41, the expansion rear end 11 of implant 1 could be extracted out from the reducing freeing pipe 4, and implant 1 and free pipe 4 or and the position pushed between pipe 5 fix, therefore implant 1 can not occur significantly to rotate.
The material of described escape wire can be Nitinol or rustless steel, described escape wire 3 is placed in the cavity of propelling movement pipe 5, the head end of described escape wire 3 stretches out from the reducing of cavity 41, and its tail end is connected with the tail end pushing pipe 5, and connected mode can be welding, bonding or mechanical connection; Described propelling movement pipe 5 is conduits of reducing, and leading portion diameter is less than back segment diameter.The material of described propelling movement pipe 5 can be metal material or macromolecular material.The leading portion pushing pipe 5 is thinner, be convenient to pass through bending blood vessel, its back segment is comparatively thick, has good propelling movement performance, the back segment of described propelling movement pipe 5 and near escape wire 3 with push pipe 5 junction and have the notch 51 of annular, by the notch that fractures, and by first extracting two escape wires out, allowing and expanding rear end 11 has extraction space in the reducing of cavity 41, then extracting the method pushing pipe out, free operation with what complete implant, that carries out implant frees operation.
Claims (10)
1. a structure for blood vessel implant freed by machinery, and comprise implant (1), escape wire (3), free pipe (4) and push pipe (5), its characteristic is: the afterbody of described implant (1) has flat expansion rear end (11); The described front end pushing pipe (5) with free the circular cavity (42) of managing (4) rear end and be connected; Described expansion rear end (11) is arranged in cavity (41); Described pipe (4) front end of freeing is provided with flat cavity (41), and the top of this flat cavity (41) has reducing, and width is greater than expansion rear end (11); Described sidewall of freeing pipe (4), being positioned at and expanding bottom, rear end (11), being provided with the through hole (43) for installing backing pin (2); State escape wire (3) through pushing pipe (5), head end stretches out cavity (41), and the tail end that its tail end manages (5) with propelling movement is connected.
2. the structure of blood vessel implant freed by a kind of machinery according to claim 1, it is characterized in that: the width of the reducing of described cavity (41) is less than the diameter of an escape wire (3) and expansion rear end (11) the Breadth Maximum sum of implant (1); And the diameter being greater than an escape wire (3) is connected the Breadth Maximum sum of the mid portion expanding rear end (11) with implant (1).
3. the structure of blood vessel implant freed by a kind of machinery according to claim 1, it is characterized in that: the width of described cavity (41) is greater than the maximum gauge sum of the diameter of an escape wire (3) and the expansion rear end (11) of implant (1).
4. the structure of blood vessel implant freed by a kind of machinery according to claim 1, it is characterized in that: the width of the reducing of described cavity (41) is less than the diameter of two escape wires (3) and expansion rear end (11) the Breadth Maximum sum of implant (1), and the diameter being greater than two escape wires (3) is connected the Breadth Maximum sum of the mid portion expanding rear end (11) with implant (1).
5. the structure of blood vessel implant freed by a kind of machinery according to claim 1, it is characterized in that: the width of described cavity (41) is greater than the maximum gauge sum of the diameter of two escape wires (3) and the expansion rear end (11) of implant (1).
6. the structure of blood vessel implant freed by a kind of machinery according to claim 1, it is characterized in that: the tail end of described escape wire (3) and to push the tail end connected mode of manage (5) be to weld or bonding or be mechanically connected.
7. the structure of blood vessel implant freed by a kind of machinery according to claim 1, it is characterized in that: described propelling movement manages the conduit that (5) are reducings, its leading portion diameter is less than back segment diameter, manages (5) junction and has an annular notch (51) with pushing at back segment near escape wire (3).
8. the structure of blood vessel implant freed by a kind of machinery according to claim 1, it is characterized in that: described in free pipe (4) with push manage (5) connected mode be weld, bonding, be mechanically connected or be socketed.
9. the mechanism of blood vessel implant freed by a kind of machinery according to claim 1, it is characterized in that: described in free pipe (4) material be metal material or macromolecular material.
10. the structure of blood vessel implant freed by a kind of machinery according to claim 1, it is characterized in that: the material of described escape wire (3) is Nitinol or rustless 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 |
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| Publication Number | Publication Date |
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| CN104323812A true CN104323812A (en) | 2015-02-04 |
| CN104323812B CN104323812B (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410504336.1A Active CN104323812B (en) | 2014-09-28 | 2014-09-28 | Structure for mechanically releasing implant in blood vessel |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0832607A1 (en) * | 1996-09-27 | 1998-04-01 | Target Therapeutics, Inc. | Ball lock joint and introducer for vasoocclusive member |
| US5746769A (en) * | 1995-09-08 | 1998-05-05 | Conceptus, Inc. | Endoluminal coil delivery system having a mechanical release mechanism |
| CN101340858A (en) * | 2005-10-31 | 2009-01-07 | 比奥米瑞斯公司 | Coupling and release devices and methods for their assembly and use |
| CN101448464A (en) * | 2006-04-17 | 2009-06-03 | 微治疗公司 | System and method for mechanically positioning intravascular implants |
| CN102871700A (en) * | 2012-10-09 | 2013-01-16 | 加奇生物科技(上海)有限公司 | Braided part system for embolizing aneurysm |
| 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 |
| EP2862523A1 (en) * | 2013-10-17 | 2015-04-22 | Cook Medical Technologies LLC | Release mechanism |
-
2014
- 2014-09-28 CN CN201410504336.1A patent/CN104323812B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5746769A (en) * | 1995-09-08 | 1998-05-05 | Conceptus, Inc. | Endoluminal coil delivery system having a mechanical release mechanism |
| EP0832607A1 (en) * | 1996-09-27 | 1998-04-01 | Target Therapeutics, Inc. | Ball lock joint and introducer for vasoocclusive member |
| CN101340858A (en) * | 2005-10-31 | 2009-01-07 | 比奥米瑞斯公司 | Coupling and release devices and methods for their assembly and use |
| CN101448464A (en) * | 2006-04-17 | 2009-06-03 | 微治疗公司 | System and method for mechanically positioning intravascular implants |
| CN102871700A (en) * | 2012-10-09 | 2013-01-16 | 加奇生物科技(上海)有限公司 | Braided part system for embolizing aneurysm |
| EP2862523A1 (en) * | 2013-10-17 | 2015-04-22 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104323812B (en) | 2017-02-08 |
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