CN112274209A - Spring ring conveying and releasing system - Google Patents
Spring ring conveying and releasing system Download PDFInfo
- Publication number
- CN112274209A CN112274209A CN202011586810.1A CN202011586810A CN112274209A CN 112274209 A CN112274209 A CN 112274209A CN 202011586810 A CN202011586810 A CN 202011586810A CN 112274209 A CN112274209 A CN 112274209A
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- spring ring
- delivery
- conveying
- elastic balloon
- spring
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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
- A61B17/12027—Type of occlusion
- A61B17/12031—Type of occlusion complete occlusion
-
- 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
- A61B2017/12081—Details concerning the detachment of the occluding device from the introduction device detachable by inflation
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Vascular Medicine (AREA)
- Reproductive Health (AREA)
- Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Neurosurgery (AREA)
- Materials For Medical Uses (AREA)
- Surgical Instruments (AREA)
Abstract
The embodiment of the invention relates to a spring ring conveying and releasing system, which comprises: a spring ring, a developing code engraving and conveying release device; the developing code is fixedly connected with the spring ring; the delivery release device comprises an elastic balloon and a delivery pipe; the far end of the elastic saccule is accommodated in the developing code scale, and the near end is bonded with the conveying pipe; the conveying pipe is communicated with the interior of the elastic balloon to form a cavity for containing gas; the near end of the conveying pipe is provided with an inflatable sealing part, and a breaking structure is arranged at a position on one side of the near end, which is away from the inflatable sealing part by a certain distance; the external inflating equipment inflates the chamber through the inflating and sealing component; the spring ring and the developing code are engraved under the action of the elastic balloon and the conveying pipe and conveyed to a target position through the interior of the microcatheter; the fracture structure receives external force fracture, and the gas in the cavity is revealed, and elasticity sacculus shrink is deviate from in carving from the development sign indicating number for the development sign indicating number is carved with elasticity sacculus separation, thereby makes spring ring and development sign indicating number carve and carry the release device to disengage.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a spring ring conveying and releasing system.
Background
Currently, in clinical applications, it is common to apply a tamponade therapy to an interventional coil for aneurysms, particularly cerebral aneurysms, however, the coil implantation is necessary to achieve controlled release of the implanted portion of the aneurysm. The spring ring releasing mode has many kinds, wherein, the mainstream method of mechanical releasing is the lantern ring formula, increases a movable connecting rod promptly, and the movable connecting rod end is spherical characteristic, and the movable connecting rod head end is connected with the spring ring, and the releasing silk is put into the conveying pipe together with movable connecting rod equipment, realizes the spring ring releasing through withdrawing the releasing silk. However, when the implant is released, the release point is easily affected by mechanical force, so that the position of the implant is deviated, the surgical risk of a doctor is increased, the treatment effect is influenced, and even the life of a patient is endangered.
Disclosure of Invention
The invention aims to provide a spring ring conveying and releasing system aiming at the defects in the prior art, which adopts an air releasing mode to release a spring ring and a developing code, has simple structure and convenient operation, and can not cause the deviation of the implantation position of the spring ring due to the release.
To achieve the above object, the present invention provides a spring coil conveying disengagement system, including: a spring ring, a developing code engraving and conveying release device;
the visualization code comprises a distal end, a proximal end, and an internal cavity therebetween; the far end is fixedly connected with the spring ring; the proximal end has an opening;
the delivery release device comprises an elastic balloon and a delivery pipe; the far end of the elastic saccule penetrates through the opening to be contained in the inner cavity, and the near end of the elastic saccule is bonded with the far end of the conveying pipe; the conveying pipe is communicated with the interior of the elastic balloon to form a chamber for containing gas; an inflatable sealing part is arranged at the near end of the conveying pipe, and a breaking structure is arranged at a position, which is away from the inflatable sealing part by a certain distance, on one side of the near end;
the external inflating equipment inflates the cavity through the inflating sealing component, and the elastic balloon is expanded to be attached to the cavity wall of the inner cavity; the spring ring and the developing code are engraved under the action of the elastic balloon and the conveying pipe and conveyed to a target position through the interior of the microcatheter; the rupture structure is ruptured by external force, gas in the cavity is leaked, the elastic balloon contracts and is released from the inner cavity, so that the development code is separated from the elastic balloon, and the spring ring and the development code are released from the conveying release device.
Preferably, the conveying pipe comprises a flexible pipe and a conveying steel pipe;
the far end of the flexible tube is bonded with the elastic balloon; the far end of the conveying steel pipe is sleeved at the near end of the flexible pipe.
Further preferably, the transportation release device further comprises a support spring;
the supporting spring is sleeved on the outer wall of the flexible pipe.
Further preferably, the conveying and releasing device further comprises a first protection pipe;
the first protective sleeve is sleeved at the bonding position of the elastic balloon and the flexible tube.
Further preferably, the conveying steel pipe and the flexible pipe are both conical.
Still more preferably, the outer diameter of the supporting spring is 0.2mm to 0.6 mm.
Preferably, the delivery release device further comprises a second protection pipe;
the second protection pipe is sleeved at the near end of the conveying pipe.
Preferably, the breaking structure is an annular groove.
Preferably, the spring ring is made of platinum-tungsten alloy.
Preferably, the developing code is carved into a platinum alloy tubular structure with the outer diameter of 0.25mm-0.35mm, the inner diameter of 0.15mm-0.28mm and the length of 0.3mm-0.5 mm.
According to the spring ring conveying and releasing system provided by the embodiment of the invention, the elastic balloon is accommodated in the inner cavity of the development code scale through the arrangement of the elastic balloon, the inflation sealing part and the fracture structure, when the inflation sealing part is inflated, the elastic balloon is expanded, so that the elastic balloon is attached to the inner wall of the development code scale, and the spring ring and the development code scale are conveyed to a target position through the micro catheter; the elastic balloon contracts and is separated from the inner cavity of the developing code carving device, so that the spring ring and the developing code carving and separation releasing effect of the conveying releasing device are achieved, namely the spring ring and the developing code carving are released in a gas releasing mode. During the disengagement process, the implanted position of the coil is not shifted. The spring ring conveying and releasing system is simple in structure and convenient to operate.
Drawings
FIG. 1 is a schematic diagram of a spring coil delivery release system according to an embodiment of the present invention;
fig. 2 is a schematic view of a state of an elastic balloon according to an embodiment of the present invention;
fig. 3 is a second schematic view of the state of the elastic balloon according to the embodiment of the present invention;
FIG. 4 is a schematic view of a coil delivery release system engaged with a microcatheter according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
The spring ring conveying and releasing system provided by the embodiment of the invention is matched with a micro catheter for use, adopts a gas releasing mode after conveying the spring ring and the developing code to a target position, realizes the releasing of the spring ring and the developing code, and has the advantages of simple structure and convenience in operation. It should be noted that, in order to explain the technical solution of the present invention more clearly, the user operation end is defined as a proximal end and the implantation end is defined as a distal end in the present invention.
FIG. 1 is a schematic structural diagram of a spring coil delivery and release system according to an embodiment of the present invention. As shown in FIG. 1, an embodiment of the present invention provides a spring coil delivery disengagement system, comprising: a spring ring 1, a developing code 2 and a conveying and releasing device 3.
The spring ring 1 is used as an implant for vascular interventional therapy, is left in a tumor cavity and plays a role of embolism. The spring ring 1 has the characteristics of stable performance, no toxicity, good biocompatibility and good elasticity, and therefore, the spring ring is preferably made of a platinum-tungsten alloy material. It should be noted that there are various winding manners of the coil 1, such as a spiral manner, a random winding manner, or a manner of winding the coil again, and the present invention is not limited thereto, as long as the effect of forming thrombus in the aneurysm is satisfied. This embodiment is explained by way of example of a helically wound coil, as shown in fig. 1.
The visualization code 2 includes a distal end, a proximal end, and an internal cavity (not shown) therebetween. Wherein, the far end of the developing code 2 is closed and fixedly connected with the spring ring 1. The proximal end has an opening 21. In practice, the visualization code 2 is left in the tumor cavity together with the spring coil 1 to mark the position of the spring coil 1 in the tumor cavity. In a specific example, in order to obtain a good developing effect of the development code 2 under the X-ray irradiation, the development code 2 is preferably made of platinum. In another example, in order to make the coupling and decoupling between the spring coil 1 and the conveyance decoupling device 3 faster and smoother, the development code 2 is preferably a tubular structure having an outer diameter of 0.25mm to 0.35mm, an inner diameter of 0.15mm to 0.28mm, and a length of 0.3mm to 0.5 mm.
The delivery release device 3 includes an elastic balloon 31 and a delivery tube 32.
The distal end of the resilient balloon 31 is received in the internal cavity through the opening 21 and the proximal end is bonded to the distal end of the delivery tube 32. In one specific example, the elastic balloon 31 is a thin-walled ball with an outer diameter of 0.15mm to 0.35mm, and is supported by Thermoplastic polyurethane elastomer (TPU). When the elastic balloon 31 is inflated, it is attached to the cavity wall of the internal cavity of the developing code 2. When the elastic balloon 31 contracts, it separates from the cavity wall of the internal cavity of the developing code 2. Fig. 2 and 3 show the state of the elastic balloon 31 when it is deflated and inflated, respectively.
The delivery tube 32 communicates with the interior of the resilient bladder 31, constituting the chamber 10 containing the gas, as shown in figure 2. As further shown in FIG. 1, the proximal end of the delivery tube 32 is provided with an inflatable sealing member 33. The inflatable sealing member 33 is bonded to the proximal end of the delivery tube 32. In one example, the inflatable sealing member 33 is made of a Polyester (PET) material, and may be fixed by clipping.
As shown in fig. 1 and 4, to release the coil spring 1 and the developing code 2 from the conveyance release device 3 by the gas release, a breaking structure 321 is provided on the proximal end side of the conveyance pipe 32 at a distance from the gas-filled sealing member 33. The breaking structures 321 may be embodied as annular grooves (not shown in the figures).
In order to improve the pushability of the conveying pipe 32 and to make the transmission of the pushing force of the conveying disengaging device 3 to the spring coil 1 and the developing code 2 smoother, in a preferred example, the conveying pipe 32 includes a flexible pipe 322 and a conveying steel pipe 323.
The distal end of the flexible tube 322 is bonded to the proximal end of the resilient balloon 31. Specifically, the flexible tube 322 is a thin-walled tube with an outer diameter of 0.15mm to 0.35mm, and is made of a polyester resin (PET) material. The flexible tube 322 is preferably tapered so that the delivery tube 32 has a soft gradient.
The distal end of the delivery steel tube 323 is sleeved on the proximal end of the flexible tube 322. The conveying steel pipe 323 adopts a stainless steel pipe or a nickel titanium pipe. The distal end of which is tapered by taper grinding. The arrangement of the flexible tube 322 and the delivery steel tube 323 makes the distal end of the delivery tube 32 compliant and the proximal end stable.
In a preferred version, the delivery and disengagement means 3 further comprise a support spring 34. The supporting spring 34 is sleeved on the outer wall of the flexible pipe 322, so as to protect the flexible pipe 322 and improve the fitting effect with the micro-catheter 100. In one example, the support spring 34 has an outer diameter of 0.2mm to 0.6mm and is wound from stainless steel wire having a diameter of 0.03mm to 0.08 mm.
In another preferred version, the transport release device 3 further comprises a first protection tube 35. The first protection tube 35 is sleeved at the bonding position of the elastic balloon 31 and the flexible tube 322, plays a role in protecting and supporting the bonding position, and prevents the bonding position from being broken in the conveying process to cause the implantation failure of the spring ring 1 and the developing code scale 2.
More preferably, the delivery uncoupling device 3 further comprises a second protection tube 36. The second protection tube 36 is sleeved on the proximal end of the delivery tube 32, on one hand, the inflatable sealing component 33 can be protected from being damaged by external force, and on the other hand, the second protection tube plays a role in sealing the gas in the chamber 10.
Having described the various components of the coil delivery release system and their connections provided by embodiments of the present invention, the manner in which the coil delivery release system is used is described in detail below with reference to FIGS. 1, 2, 3, and 4.
An external inflating device inflates the cavity 10 through an inflating and sealing component 33 at the near end of the conveying steel pipe 323, the elastic balloon 31 expands and is attached to the cavity wall of the internal cavity for developing the code, and the inflating and sealing component 33 is clamped; the second protective tube 36 is sleeved at the near end of the conveying steel tube 323 to prevent gas in the cavity 10 from leaking, and the spring ring 1 and the developing code 2 are conveyed to a target position through the interior of the microcatheter 100 under the combined action of the elastic balloon 31, the flexible tube 322 and the conveying steel tube 323; the fracture structure 321 is fractured by external force, gas in the chamber 10 leaks, the elastic balloon 31 contracts and is separated from the internal cavity of the development code etching 2, so that the development code etching 2 is separated from the elastic balloon 31, and the spring ring 1 and the development code etching 2 are separated from the conveying and releasing device 3.
According to the spring ring conveying and releasing system provided by the embodiment of the invention, the elastic balloon is accommodated in the inner cavity of the development code scale through the arrangement of the elastic balloon, the inflation sealing part and the fracture structure, when the inflation sealing part is inflated, the elastic balloon is expanded, so that the elastic balloon is attached to the inner wall of the development code scale, and the spring ring and the development code scale are conveyed to a target position through the micro catheter; the elastic balloon contracts and is separated from the inner cavity of the developing code carving device, so that the separation and release effects of the spring ring and the developing code carving device are realized, namely, the spring ring and the developing code carving device are released by adopting a gas releasing mode. During the disengagement process, the implanted position of the coil is not shifted. The spring ring conveying and releasing system is simple in structure and convenient to operate.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A spring coil delivery release system, comprising: a spring ring, a developing code engraving and conveying release device;
the visualization code comprises a distal end, a proximal end, and an internal cavity therebetween; the far end is fixedly connected with the spring ring; the proximal end has an opening;
the delivery release device comprises an elastic balloon and a delivery pipe; the far end of the elastic saccule penetrates through the opening to be contained in the inner cavity, and the near end of the elastic saccule is bonded with the far end of the conveying pipe; the conveying pipe is communicated with the interior of the elastic balloon to form a chamber for containing gas; an inflatable sealing part is arranged at the near end of the conveying pipe, and a breaking structure is arranged at a position, which is away from the inflatable sealing part by a certain distance, on one side of the near end;
the external inflating equipment inflates the cavity through the inflating sealing component, and the elastic balloon is expanded to be attached to the cavity wall of the inner cavity; the spring ring and the developing code are engraved under the action of the elastic balloon and the conveying pipe and conveyed to a target position through the interior of the microcatheter; the rupture structure is ruptured by external force, gas in the cavity is leaked, the elastic balloon contracts and is released from the inner cavity, so that the development code is separated from the elastic balloon, and the spring ring and the development code are released from the conveying release device.
2. The spring coil delivery release system of claim 1, wherein the delivery tube comprises a flexible tube and a delivery steel tube;
the far end of the flexible tube is bonded with the elastic balloon; the far end of the conveying steel pipe is sleeved at the near end of the flexible pipe.
3. The spring coil delivery release system of claim 2, wherein the delivery release device further comprises a support spring;
the supporting spring is sleeved on the outer wall of the flexible pipe.
4. The spring coil delivery release system of claim 2, wherein the delivery release device further comprises a first protective tube;
the first protective sleeve is sleeved at the bonding position of the elastic balloon and the flexible tube.
5. A spring coil delivery disengagement system according to claim 2, wherein the delivery steel tube and the flexible tube are both tapered.
6. A spring ring delivery release system as set forth in claim 3, wherein said support spring has an outer diameter of 0.2mm-0.6 mm.
7. The spring ring delivery release system of claim 1, wherein the delivery release device further comprises a second protective tube;
the second protection pipe is sleeved at the near end of the conveying pipe.
8. The spring ring delivery release system of claim 1, wherein the breaking structure is an annular groove.
9. The spring ring delivery release system of claim 1, wherein the spring ring is formed of a platinum-tungsten alloy.
10. The spring ring delivery release system of claim 1, wherein the visualization code is engraved as a platinum alloy tubular structure having an outer diameter of 0.25mm to 0.35mm, an inner diameter of 0.15mm to 0.28mm, and a length of 0.3mm to 0.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011586810.1A CN112274209B (en) | 2020-12-29 | 2020-12-29 | Spring ring conveying and releasing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011586810.1A CN112274209B (en) | 2020-12-29 | 2020-12-29 | Spring ring conveying and releasing system |
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| Publication Number | Publication Date |
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| CN112274209A true CN112274209A (en) | 2021-01-29 |
| CN112274209B CN112274209B (en) | 2021-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011586810.1A Active CN112274209B (en) | 2020-12-29 | 2020-12-29 | Spring ring conveying and releasing system |
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| CN (1) | CN112274209B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113057777A (en) * | 2021-05-06 | 2021-07-02 | 哈尔滨医科大学 | Weight-losing device with intragastric support |
| CN114469231A (en) * | 2022-01-27 | 2022-05-13 | 南京思脉德医疗科技有限公司 | Embolic coil conveying system |
| CN114886496A (en) * | 2022-04-19 | 2022-08-12 | 江苏畅医达医疗科技有限公司 | Rapid electrolytic stripping conveying device and using method thereof |
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| US6544225B1 (en) * | 2000-02-29 | 2003-04-08 | Cordis Neurovascular, Inc. | Embolic coil hydraulic deployment system with purge mechanism |
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| CN108420486A (en) * | 2018-03-30 | 2018-08-21 | 北京泰杰伟业科技有限公司 | A kind of conveying device for embolism spring ring |
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| CN110063765A (en) * | 2018-01-24 | 2019-07-30 | 德普伊新特斯产品公司 | Aneurysm devices and delivery system |
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2020
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| US6544225B1 (en) * | 2000-02-29 | 2003-04-08 | Cordis Neurovascular, Inc. | Embolic coil hydraulic deployment system with purge mechanism |
| US6514264B1 (en) * | 2000-06-01 | 2003-02-04 | Cordis Neurovascular, Inc. | Embolic coil hydraulic deployment system with purge mechanism |
| US20080221610A1 (en) * | 2001-11-15 | 2008-09-11 | Roberto Diaz | Small diameter deployment system with improved headpiece |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113057777A (en) * | 2021-05-06 | 2021-07-02 | 哈尔滨医科大学 | Weight-losing device with intragastric support |
| CN114469231A (en) * | 2022-01-27 | 2022-05-13 | 南京思脉德医疗科技有限公司 | Embolic coil conveying system |
| CN114469231B (en) * | 2022-01-27 | 2024-04-05 | 南京思脉德医疗科技有限公司 | Embolic coil conveying system |
| CN114886496A (en) * | 2022-04-19 | 2022-08-12 | 江苏畅医达医疗科技有限公司 | Rapid electrolytic stripping conveying device and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112274209B (en) | 2021-04-09 |
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