CN214907580U - Coil delivery system and coil delivery device - Google Patents
Coil delivery system and coil delivery device Download PDFInfo
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- CN214907580U CN214907580U CN202120652091.2U CN202120652091U CN214907580U CN 214907580 U CN214907580 U CN 214907580U CN 202120652091 U CN202120652091 U CN 202120652091U CN 214907580 U CN214907580 U CN 214907580U
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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
Abstract
The utility model provides a spring coil delivery system and a spring coil delivery device, wherein the system comprises a spring coil, a microcatheter and a delivery device; the coil includes a body portion having a first diameter, a proximal portion having a second diameter, and a connecting portion connecting the body portion and the proximal portion, the connecting portion having a third diameter, the first diameter being greater than the second diameter, the second diameter being greater than the third diameter; the delivery device includes: pushing the rod core wire; the tubular push rod is suitable for being inserted into a microcatheter and sleeved on a push rod core wire, the distal end of the tubular push rod comprises a semi-ring part, and the inner surface of the semi-ring part is in clearance fit with the proximal end part; the clamping ring is in a semi-annular shape and is suitable for being matched with the semi-ring part, and a first accommodating cavity and a second accommodating cavity are formed in the clamping ring; the first accommodating cavity is in clearance fit with the proximal end part; the second accommodating cavity is in clearance fit with the connecting part; the core wire of the pushing rod is fixedly connected with the snap ring. The utility model discloses simple structure and the spring coil of being convenient for are liberated.
Description
Technical Field
The utility model relates to a spring coil delivery system and spring coil delivery device.
Background
Embolization, also known as embolization, is a controlled injection of an embolization material into the supply vessel of a diseased organ via an arterial or intravenous catheter to occlude the vessel and interrupt the blood supply, in order to achieve the purpose of controlling bleeding, treating tumors and vascular lesions, and eliminating the function of the diseased organ. Embolization is an important technique in interventional therapy and also one of the three major techniques in interventional radiology. The spring ring is a common embolus, is a mechanical embolus, can be used for permanently occluding large and medium-sized arteries, and has no active effect on organisms. The general surgical strategy is to establish a pathway, then deliver the spring coil and other instruments to the affected part, push out the spring coil, and complete the operation.
When the spring coil aneurysm is used, the spring coil and the delivery system need to be released to complete the release of the spring coil, and the existing spring coil release modes comprise four main modes of hydrolysis release, electrolysis release, hot melt release and mechanical release. The purpose of releasing the spring ring is realized by the dissolution characteristic after the solvent is filled into the conveying rod, the problem of unstable releasing mode exists, the pressure of blood vessels is easily increased by injecting the solvent, and the spring ring cannot be released if the injection amount of the solvent is insufficient, so that the releasing is difficult to realize. The electric release is that the spring ring and the guide wire are welded together by electric welding. After electric welding is cooled, the welding part is uneven, relatively high voltage is easy to generate, and the time for the spring ring to be electrolyzed from the leading-in sheath is difficult to control. The thermal fuse is fused to realize the release of the spring ring when the heat reaches a certain degree. When the hot melting is carried out, local damage in a human body can be caused, and the pain of a patient is increased. The current mainstream method of mechanical release is a ferrule type, namely, a movable connecting rod is added, the tail end of the movable connecting rod is spherical, the head end of the movable connecting rod is connected with a spring ring, the release wire is assembled with the movable connecting rod and put into a conveying and guiding sheath, and the spring ring is released by withdrawing the release wire.
The art also lacks a coil delivery system or device that is simple in construction, easy and simple to operate, and safe and reliable.
Accordingly, there is a need for a coil delivery system and apparatus that can stably deliver coils into a human body at a location where a thrombus occlusion is desired, and then easily release the coil.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a delivery system and device of spring coil, its simple structure, cost are lower, and operation is simple, convenient, have avoided causing the damage to the blood vessel.
To achieve the above objects, in one aspect, the present invention provides a coil delivery system. The coil delivery system includes:
a spring coil comprising a body portion having a first diameter, a proximal portion having a second diameter, and a connecting portion connecting the body portion and the proximal portion, the connecting portion having a third diameter, wherein the first diameter is greater than the second diameter, and the second diameter is greater than the third diameter; a microcatheter for insertion into a blood vessel to receive and guide the coil to a lesion in the blood vessel; and a delivery device adapted to deliver the coil in a microcatheter. The delivery device includes: a push rod core wire for delivering a coil in a microcatheter; a tubular push rod adapted to be inserted into a microcatheter over a push rod core wire, the distal end of the tubular push rod comprising a half-ring portion having an inner surface adapted to be a clearance fit with the proximal portion; the clamping ring is in a semi-annular shape and is suitable for being matched with the semi-ring part, and a first accommodating cavity and a second accommodating cavity are formed in the clamping ring; the first receiving cavity is suitable for clearance fit with the proximal end part; the second accommodating cavity is suitable for being in clearance fit with the connecting part; the core wire of the pushing rod is fixedly connected with the snap ring.
Preferably, the length of the first receiving chamber is greater than or equal to the length of the proximal portion of the coil.
Preferably, the inner diameters of the half ring part and the snap ring are both equal to or greater than the second diameter, and when greater than the second diameter, the inner diameter of the half ring part or the snap ring is not greater than 110% of the second diameter.
Preferably, the diameter of the second containing cavity is equal to or larger than the third diameter, and when larger than the third diameter, the diameter of the second containing cavity is not larger than 105% of the third diameter
Preferably, the length of the second receiving chamber is equal to or less than the length of the connection portion of the spring ring, and when less than the length of the connection portion of the spring ring, the length of the second receiving chamber is not less than 85% of the length of the connection portion.
Preferably, the diameters of the snap ring and the half ring portion are equal to or greater than the first diameter, and when greater than the first diameter, the diameters of the snap ring and the half ring portion are not greater than 110% of the first diameter.
Preferably, the one end that the propelling movement pole core silk is close to the spring coil is equipped with the elbow, the first inner wall that holds the intracavity and is close to tubulose propelling movement pole one end of snap ring is equipped with the recess for hold and the chucking the elbow.
Preferably, a part of the tubular push rod, which is close to the half ring part, is provided with a spiral cutting groove.
In another aspect, the present invention provides a spring coil delivery device, the spring coil including a main body portion having a first diameter, a proximal portion having a second diameter, and a connecting portion connecting the main body portion and the proximal portion, the connecting portion having a third diameter, wherein the first diameter is greater than the second diameter, and the second diameter is greater than the third diameter. The coil delivery device includes: a push rod core wire for delivering a coil; a tubular push rod adapted to be inserted into a microcatheter over a push rod core wire, the distal end of the tubular push rod comprising a half-ring portion having an inner surface adapted to be a clearance fit with the proximal portion; the clamping ring is in a semi-annular shape and is suitable for being matched with the semi-ring part, and a first accommodating cavity and a second accommodating cavity are formed in the clamping ring; the first receiving cavity is suitable for clearance fit with the proximal end part; the second accommodating cavity is suitable for being in clearance fit with the connecting part; the core wire of the pushing rod is fixedly connected with the snap ring.
Preferably, the length of the first receiving chamber is greater than or equal to the length of the proximal portion of the coil.
Preferably, the inner diameters of the half ring part and the snap ring are both equal to or greater than the second diameter, and when greater than the second diameter, the inner diameter of the half ring part or the snap ring is not greater than 110% of the second diameter.
Preferably, the diameter of the second accommodating chamber is equal to or larger than the third diameter, and when larger than the third diameter, the diameter of the second accommodating chamber is not larger than 110% of the third diameter.
Preferably, the length of the second receiving chamber is equal to or less than the length of the connection portion of the spring ring, and when less than the length of the connection portion of the spring ring, the length of the second receiving chamber is not less than 85% of the length of the connection portion.
Preferably, the diameters of the snap ring and the half ring portion are equal to or greater than the first diameter, and when greater than the first diameter, the diameters of the snap ring and the half ring portion are not greater than 110% of the first diameter.
Preferably, the one end that the propelling movement pole core silk is close to the spring coil is equipped with the elbow, the first inner wall that holds the intracavity and keep away from spring coil one end of snap ring is equipped with the recess for hold and the chucking the elbow.
Preferably, a part of the tubular push rod, which is close to the half ring part, is provided with a spiral cutting groove.
Compared with the prior art, the utility model discloses simple structure, cost are lower, can carry into the interior dead position of needs thrombus of human body with the spring coil steadily, can realize instantaneous release when releasing, and operation mode is simple, convenient, has avoided causing the damage to the blood vessel.
Drawings
The accompanying drawings illustrate by way of example, but not by way of limitation, embodiments of the present invention and in which:
FIG. 1 illustrates a coil delivery system according to one embodiment of the present invention;
FIG. 2 illustrates an assembled cross-sectional view of a coil delivery system according to one embodiment of the present invention;
figures 3a-3c illustrate a coil delivery system disengagement process according to one embodiment of the present invention: wherein FIG. 3a shows the coil completely withdrawn from the microcatheter; FIG. 3b shows the distal half collar of the tubular push rod disengaged from the spring coil; FIG. 3c shows the coil disengaged from the delivery system.
Reference numerals:
1. a microcatheter; 2. pushing the rod core wire; 3. a tubular push rod; 32. a half-ring portion; 4. a snap ring; 5. a spring ring; 51. a proximal portion; 52. a body portion; 53. a connecting portion.
Detailed Description
The technical solution of the present invention will be described in further detail below with reference to the following embodiments, but the present invention is not limited to the following embodiments.
Example one
As shown in FIG. 1, an embodiment of the present invention relates to a coil delivery system. The delivery system comprises a microcatheter 1, a coil 5 and a delivery device. Microcatheter 1 is used to insert a blood vessel to receive coil 5 and guide coil 5 to a lesion in the blood vessel. The coil 5 includes a body portion 52 having a first diameter, a proximal portion 51 having a second diameter, and a connecting portion 53 connecting the body portion and the proximal portion, the connecting portion 53 having a third diameter, wherein the first diameter is greater than the second diameter, which is greater than the third diameter.
The delivery device is adapted to deliver a coil 5 in the microcatheter 1. Wherein, the delivery device comprises a push rod core wire 2, a tubular push rod 3 and a snap ring 4. The push rod core wire 2 is used for delivering the spring ring 5 in the microcatheter 1 and is fixedly connected with the snap ring 4. The tubular push rod 3 is suitable for being inserted into a micro catheter and is sleeved on the push rod core wire 2. The distal end of the tubular push rod 3 comprises a half collar portion 32, the inner surface of which half collar portion 32 is adapted to have a clearance fit with the proximal portion 51 of the spring turn 5. The snap ring 4 is semi-annular in shape and is adapted to fit to the half-ring portion 32 of the tubular push rod 3. A first accommodating cavity and a second accommodating cavity are arranged in the clamping ring 4. Wherein, the first chamber and the second chamber of holding all are the semicircle columnar order, and just the first chamber of holding is suitable for with the proximal portion 51 clearance fit of spring coil 5, the second holds the chamber and is suitable for with the connecting portion 53 clearance fit of spring coil 5.
Wherein, in the clearance fit of the inner surface of the half-ring portion 32 of the tubular push rod 3 and the proximal end portion 51 of the spring coil 5, it is preferable that the inner diameter of the half-ring portion 32 is equal to or slightly larger than the diameter (i.e., the second diameter) of the proximal end portion 51, and when larger than the diameter of the proximal end portion 51, the inner diameter of the half-ring portion 32 is not larger than 110% of the diameter of the proximal end portion 51.
Wherein, in the clearance fit of the first receiving cavity with the proximal end portion 51 of the spring coil 5, it is preferable that the diameter of the first receiving cavity is equal to or slightly larger than the diameter of the proximal end portion 51 (i.e., the second diameter), and when larger than the diameter of the proximal end portion 51, the diameter of the first receiving cavity is not larger than 110% of the diameter of the proximal end portion 51.
Wherein, in the clearance fit of the second receiving chamber with the connecting portion 53 of the spring ring 5, it is preferable that the diameter of the second receiving chamber is equal to or slightly larger than the diameter of the connecting portion 53 (i.e., the third diameter), and when larger than the diameter of the connecting portion 53, the diameter of the second receiving chamber is not larger than 110% of the diameter of the connecting portion 53.
For realizing the fixed connection of push rod core silk 2 and snap ring 4, the one end that push rod core silk 2 is close to spring coil 5 is equipped with the elbow, and the first intracavity that holds of snap ring 4 is equipped with the recess on being close to the inner wall of 3 one ends of tubulose push rod for hold and the chucking elbow. Meanwhile, the length of the first receiving chamber in the retainer ring 4 is greater than the length of the proximal end portion 51 of the spring ring 5, so that the first receiving chamber has enough space to receive the proximal end portion 51 of the spring ring 5 and the bend of the push rod core wire 2.
Other ways of fixedly connecting the push rod core wire 2 and the snap ring 4 can be used. For example, the push rod core wire 2 may be attached to the end of the snap ring 4. In this case, the length of the first receiving chamber in the retainer ring 4 may be equal to the length of the proximal end portion 51 of the spring coil 5, and a connecting space may be left by providing a groove or the like in the tubular push rod 3.
In the context of the present invention, a half-ring may refer to a half-shape substantially in the shape of a cylinder cut open in the direction of the longitudinal axis. The semi-annular shape is not necessarily the exact half shape without affecting the engagement function. For example, where the arc of the half-ring of the snap ring 4 is slightly less than 180 degrees, the arc of the half-ring portion 32 of the tubular push rod 3 may be slightly greater than 180 degrees so that the two may be joined to form a substantially cylindrical tubular body portion.
Preferably, the length of the second receiving chamber is equal to the length of the connecting portion of the spring ring. In this case, the second housing chamber is snapped onto the connecting portion and fixes it in the longitudinal direction, and the position of the spring ring 5 at the time of delivery and release can be accurately controlled. In other embodiments, the length of the second receiving chamber may also be slightly less than the length of the connecting portion 53 of the spring coil 5. Preferably, when less than the length of the connecting portion 53 of the spring coil 5, the length of the second accommodating chamber is not less than 85% of the length of the connecting portion 53.
Preferably, the diameter of the snap ring 4 and the half ring portion 32 is equal to the first diameter. At this point, the diameters of the tubular push rod 3, the snap ring 4, and the main body portion 52 of the spring coil 5 are substantially the same, facilitating delivery in a microcatheter. In other embodiments, the diameters of the snap ring 4 and the half-ring portion 32 of the tubular push rod 3 may also be slightly larger than the diameter (i.e., the first diameter) of the main body portion 52 of the spring ring 5. Preferably, the diameters of the snap ring 4 and the half-ring portion 32 of the tubular push rod 3, when larger than the diameter of the main body portion 52 of the spring ring 5, are no greater than 110% of the diameter of the main body portion 52 of the spring ring 5.
Preferably, the tubular push rod 3 may be a metal tube made of a metal material such as stainless steel tube, nickel titanium tube, or the like, or a hypotube. The tubular push rod may have a helical cut in a portion of its end adjacent the half collar portion 32 to make the rod more flexible and more capable of over-bending in a blood vessel, reducing resistance to delivery.
As shown in FIGS. 3a-3c, the delivery and release process of the coil delivery system described above is as follows: the microcatheter 1 is inserted into the predetermined intravascular position and the engaged coil 5, snap ring 4 and tubular push rod 3 are inserted into the microcatheter 1 (at this time, the first receiving lumen of the snap ring 4 receives the proximal portion 51 of the coil 5, the second receiving lumen of the snap ring 4 receives the connecting portion 53 of the coil 5, the snap ring 4 is mated to the half-ring portion 32 of the tubular push rod 3 and engaged with each other by the constraint of the microcatheter 1) and delivered together with the tubular push rod 3 through the push rod core wire 2 to the location in the human body where thrombus occlusion is desired until the coil 5 and snap ring 4 are completely pushed out of the microcatheter 1 (as shown in fig. 3 a). After the coil 5 is completely ejected out of the microcatheter 1, the tubular push rod 3 is pulled proximally relative to the push rod core wire 2 until the half-collar portion 32 of the distal end of the tubular push rod 3 disengages from the coil 5 (as shown in FIG. 3 b). After the distal half-ring portion 32 of the tubular push rod 3 is disengaged from the spring coil 5, the first end 51 and the connecting portion 53 of the spring coil 5 are disengaged from the notch of the snap ring 4 without radial constraint, and the release is completed (as shown in fig. 3 c). After the spring ring 5 is separated from the delivery system, the tubular push rod 3 and the snap ring 4 are withdrawn from the microcatheter 1 together with the push rod core wire 2, and the delivery and release of the spring ring 5 are completed. Where "proximal" refers to the end of the device or component away from the site, and "distal" refers to the end of the device or component toward the site.
It can be seen that the delivery system for the spring ring in the first embodiment has a simple structure and a low cost, can stably deliver the spring ring into a position in a human body where thrombus occlusion is needed, can be instantaneously released when released, is simple and convenient to operate, and avoids damage to blood vessels.
Example two
Example two is the delivery device in the delivery system for a coil described in example one.
The embodiments of the present invention are not limited to the above-described embodiments, and those skilled in the art can make various changes and modifications in form and detail without departing from the spirit and scope of the present invention, and these are all considered to fall within the scope of the present invention.
Claims (16)
1. A coil delivery system, comprising:
a spring coil comprising a body portion having a first diameter, a proximal portion having a second diameter, and a connecting portion connecting the body portion and the proximal portion, the connecting portion having a third diameter, wherein the first diameter is greater than the second diameter, and the second diameter is greater than the third diameter;
a microcatheter for insertion into a blood vessel to receive and guide the coil to a lesion in the blood vessel; and
a delivery device adapted to deliver the coil in a microcatheter, the delivery device comprising:
a push rod core wire for delivering a coil in a microcatheter;
a tubular push rod adapted to be inserted into a microcatheter over a push rod core wire, the distal end of the tubular push rod comprising a half-ring portion having an inner surface adapted to be a clearance fit with the proximal portion; and
the clamping ring is in a semi-annular shape and is suitable for being matched with the semi-ring part, and a first accommodating cavity and a second accommodating cavity are formed in the clamping ring; the first receiving cavity is suitable for clearance fit with the proximal end part; the second accommodating cavity is suitable for being in clearance fit with the connecting part;
wherein the core wire of the push rod is fixedly connected with the snap ring.
2. The coil delivery system of claim 1, wherein the length of the first receiving chamber is greater than or equal to the length of the proximal portion of the coil.
3. The spring ring delivery system of claim 1, wherein the inner diameter of each of the half-ring portion and the snap ring is equal to or greater than the second diameter, and when greater than the second diameter, the inner diameter of the half-ring portion or the snap ring is no greater than 110% of the second diameter.
4. The spring coil delivery system of claim 1, wherein the diameter of the second receiving cavity is equal to or greater than the third diameter, and when greater than the third diameter, the diameter of the second receiving cavity is no greater than 110% of the third diameter.
5. The spring coil delivery system of claim 1, wherein the length of the second receiving chamber is equal to or less than the length of the connecting portion of the spring coil, and when less than the length of the connecting portion of the spring coil, the length of the second receiving chamber is no less than 85% of the length of the connecting portion.
6. The spring ring delivery system of any of claims 1-5, wherein the diameter of the snap ring and the half-ring portions is equal to or greater than the first diameter, and when greater than the first diameter, the diameter of the snap ring and the half-ring portions is no greater than 110% of the first diameter.
7. A coil delivery system as in claim 1, wherein the push rod core wire has an elbow at an end adjacent the coil, and wherein the first receiving chamber of the retainer ring has a groove in an inner wall thereof adjacent the end of the tubular push rod for receiving and retaining the elbow.
8. The spring coil delivery system of claim 1, wherein a portion of the tubular push rod proximate the half-ring portion is provided with a helical cutting groove.
9. A spring coil delivery device, the spring coil comprising a main body portion having a first diameter, a proximal portion having a second diameter, and a connecting portion connecting the main body portion and the proximal portion, the connecting portion having a third diameter, wherein the first diameter is greater than the second diameter, and the second diameter is greater than the third diameter; the delivery device includes:
a push rod core wire for delivering a coil;
a tubular push rod adapted to be inserted into a microcatheter over a push rod core wire, the distal end of the tubular push rod comprising a half-ring portion having an inner surface adapted to be a clearance fit with the proximal portion; and
the clamping ring is in a semi-annular shape and is suitable for being matched with the semi-ring part, and a first accommodating cavity and a second accommodating cavity are formed in the clamping ring; the first receiving cavity is suitable for clearance fit with the proximal end part; the second accommodating cavity is suitable for being in clearance fit with the connecting part;
wherein the core wire of the push rod is fixedly connected with the snap ring.
10. The spring coil delivery device of claim 9, wherein the length of the first receiving lumen is greater than or equal to the length of the proximal portion of the spring coil.
11. The spring ring delivery device of claim 9, wherein the inner diameter of each of the half-ring portions and the snap ring is equal to or greater than the second diameter, and when greater than the second diameter, the inner diameter of the half-ring portions or the snap ring is no greater than 110% of the second diameter.
12. The spring coil delivery device of claim 9, wherein the diameter of the second receiving lumen is equal to or greater than the third diameter, and when greater than the third diameter, the diameter of the second receiving lumen is no greater than 110% of the third diameter.
13. The spring coil delivery device of claim 9, wherein the length of the second receiving chamber is equal to or less than the length of the connecting portion of the spring coil, and when less than the length of the connecting portion of the spring coil, the length of the second receiving chamber is no less than 85% of the length of the connecting portion.
14. The spring ring delivery device of any one of claims 9-13, wherein the diameter of the snap ring and the half-ring portions is equal to or greater than the first diameter, and when greater than the first diameter, the diameter of the snap ring and the half-ring portions is no greater than 110% of the first diameter.
15. A coil delivery apparatus as in claim 9, wherein the end of the push rod core wire adjacent the coil is provided with a bend, and the first receiving chamber of the retainer ring is provided with a groove in the inner wall thereof adjacent the end of the tubular push rod for receiving and retaining the bend.
16. The spring coil delivery device of claim 9, wherein a portion of the tubular push rod proximate the half-ring portion is provided with a helical cutting groove.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120652091.2U CN214907580U (en) | 2021-03-30 | 2021-03-30 | Coil delivery system and coil delivery device |
| PCT/CN2022/084065 WO2022206837A1 (en) | 2021-03-30 | 2022-03-30 | Spring coil delivery system and spring coil delivery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120652091.2U CN214907580U (en) | 2021-03-30 | 2021-03-30 | Coil delivery system and coil delivery device |
Publications (1)
| Publication Number | Publication Date |
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| CN214907580U true CN214907580U (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120652091.2U Active CN214907580U (en) | 2021-03-30 | 2021-03-30 | Coil delivery system and coil delivery device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN214907580U (en) |
| WO (1) | WO2022206837A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022206837A1 (en) * | 2021-03-30 | 2022-10-06 | 上海励楷科技有限公司 | Spring coil delivery system and spring coil delivery device |
| WO2022206836A1 (en) * | 2021-03-30 | 2022-10-06 | 上海励楷科技有限公司 | Spring coil delivery system and device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5895391A (en) * | 1996-09-27 | 1999-04-20 | Target Therapeutics, Inc. | Ball lock joint and introducer for vaso-occlusive member |
| US6811561B2 (en) * | 2001-11-15 | 2004-11-02 | Cordis Neurovascular, Inc. | Small diameter deployment system with improved headpiece |
| US8333796B2 (en) * | 2008-07-15 | 2012-12-18 | Penumbra, Inc. | Embolic coil implant system and implantation method |
| US20140058435A1 (en) * | 2012-08-21 | 2014-02-27 | Donald K. Jones | Implant delivery and release system |
| JP6418613B2 (en) * | 2016-05-31 | 2018-11-07 | 国立大学法人信州大学 | Embolic coil |
| CN206463030U (en) * | 2016-11-10 | 2017-09-05 | 珠海通桥医疗科技有限公司 | Embolism turn kickoff mechanism |
| CN109044469A (en) * | 2018-09-17 | 2018-12-21 | 南京思脉德医疗科技有限公司 | A kind of embolism spring ring conveying device |
| CN214907580U (en) * | 2021-03-30 | 2021-11-30 | 上海励楷科技有限公司 | Coil delivery system and coil delivery device |
| CN214907579U (en) * | 2021-03-30 | 2021-11-30 | 上海励楷科技有限公司 | Coil delivery system and coil delivery device |
-
2021
- 2021-03-30 CN CN202120652091.2U patent/CN214907580U/en active Active
-
2022
- 2022-03-30 WO PCT/CN2022/084065 patent/WO2022206837A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022206837A1 (en) * | 2021-03-30 | 2022-10-06 | 上海励楷科技有限公司 | Spring coil delivery system and spring coil delivery device |
| WO2022206836A1 (en) * | 2021-03-30 | 2022-10-06 | 上海励楷科技有限公司 | Spring coil delivery system and device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022206837A1 (en) | 2022-10-06 |
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