CN114246626A - Medical spring coil and conveying system comprising same - Google Patents
Medical spring coil and conveying system comprising same Download PDFInfo
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- CN114246626A CN114246626A CN202010998715.6A CN202010998715A CN114246626A CN 114246626 A CN114246626 A CN 114246626A CN 202010998715 A CN202010998715 A CN 202010998715A CN 114246626 A CN114246626 A CN 114246626A
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
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- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 3
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- 206010002329 Aneurysm Diseases 0.000 abstract description 14
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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
-
- 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
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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
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/1214—Coils or wires
- A61B17/12145—Coils or wires having a pre-set deployed three-dimensional shape
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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
- A61B2017/1205—Introduction devices
Abstract
The invention relates to a medical spring ring which comprises at least two sections of first spring units, wherein the adjacent first spring units are flexibly connected. The spring ring in the medical spring ring provided by the invention is changed from an integrated structure into a flexible connection by adopting a plurality of sections of first spring units, and the sections of first spring units are not directly connected, so that the units are not directly connected, namely, force transmission does not exist, the interference between two connected first spring units in the spring ring filling process can be avoided, and the intratumoral overturn phenomenon of the integrated spring ring in the operation is solved. Furthermore, the situation that superposition and tail end tightness generated by traditional integrated structure filling are caused by independent first spring unit filling can not be caused, so that the phenomenon of tube kicking is reduced, the operation safety of a product is improved, the risks of aneurysm breakage and operation time extension are avoided, the life safety of a patient is ensured, good use feedback of a doctor is obtained, and the product complaint rate is low.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a medical spring coil with multi-section flexible connection and a conveying system comprising the spring coil.
Background
Intracranial aneurysm forms a tumor-like protrusion formed by expansion or dilation of the wall of an arterial blood vessel due to lesion or injury of the wall of a cerebral blood vessel, and once the aneurysm is broken, intracranial subarachnoid hemorrhage is easily caused, so that the intracranial aneurysm has high mortality and disability rate. The spring ring is conveyed to the position of a lesion aneurysm in sequence by using a conveying device through a microcatheter, is filled into the aneurysm, changes the blood flow in the aneurysm, forms embolism to close the aneurysm to achieve the treatment effect, and prevents the aneurysm from further developing to cause rupture bleeding.
The spring coil product sold in the market at present has a primary structure of a section of spring and a secondary structure of a different shape formed by winding the primary spring, and the shape is continuously and repeatedly arranged to form the whole product. The repeating unit shape is called a unit, such as a multi-Box unit shape, and the multi-unit is formed and connected by a spring and is designed in a one-piece mode.
The integrated spring coil product is used for continuously filling subsequent units in the aneurysm after the first unit is filled in the process of filling the aneurysm. The main defect lies in, the flexibility is relatively poor is connected between the integral type spring coil product, the unit of follow-up packing constantly gives the effect of the not equidirectional power of unit of having filled, leads to the spring coil to take place the position change upset condition in the aneurysm. The product and the aneurysm slide relatively due to overturning, and the risk of aneurysm rupture is easily increased due to friction.
Defect two lies in, integral type design formation spring coil length is longer, and the front end unit constantly superposes, leads to filling the unit at last to be taut, causes rear end spring coil hardness to increase, very easily produces and plays a tub risk. Kick the pipe for the spring coil is at the filling in-process, and the product is carried the reaction force to the pipe a little, and the product hardness increase will lead to pipe a little reaction force to increase, forces pipe a little to take place the swing and move backward, and the aneurysm drops, and the pipe a little need be adjusted in the reoperation, increases the operation time and will increase disease operation risk. Therefore, the design of the integrated spring ring has the defects of longer length, poor flexibility of the unit connecting position, easy turnover in the tumor, pipe kicking and the like.
Disclosure of Invention
In view of the above-discussed shortcomings of the prior art, it is an object of the present invention to provide a medical coil and delivery system incorporating the same. Compared with the prior art, the spring ring cuts off the units to form the multi-section spring, the flexibility is increased at the connecting position of the units, and the design defect of the integrated spring ring is overcome.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a medical spring coil comprises at least two sections of first spring units, and the adjacent first spring units are flexibly connected.
Furthermore, the flexible connection selects a polymer wire as a connection wire, the near end and/or the far end of the connection wire is extended and penetrates into the first spring unit, and the extended part penetrating into the first spring unit forms an anti-unwinding wire.
Furthermore, the flexible connection selects a polymer wire as a connection line, and the near end and the far end of the connection line are respectively connected with the anti-unwinding wire arranged inside the first spring unit.
Further, the connecting wire is single-stranded or multi-stranded, and the anti-unwinding wire is single-stranded or multi-stranded.
Furthermore, the length range of the connecting line is 0.1 mm-1 mm.
Further, the connecting line and the connecting position of the near end and/or the far end of the first spring unit form a fixing part.
Further, the connection line is connected to the proximal end and/or the distal end of the first spring unit via a second spring unit.
Furthermore, the second spring unit is an extension section of the near end and/or the far end of the first spring unit, and the connecting wire is fixed by the second spring unit through reducing.
Further, the second spring unit and the first spring unit are coaxially nested, and the inner diameter of the first spring unit is equal to or different from the outer diameter of the second spring unit.
Furthermore, one end of the connecting wire extending into the first spring unit is knotted to form a buckle, and the buckle is connected with the near end and/or the far end of the first spring unit through the second spring unit.
Further, the spring ring further comprises a second spring unit which is coaxially connected with the first spring unit in a nested mode, and the outer diameter of the second spring unit is equal to or different from the inner diameter of the first spring unit.
Furthermore, at least two hanging buckles are selected as connecting pieces in the flexible connection, the adjacent ends of the at least two hanging buckles are connected with each other, and the near ends and/or far ends of the at least two hanging buckles which are connected penetrate through the second spring to extend into the near ends and/or far ends of the first spring unit and are connected with the first spring unit.
Furthermore, the hanging buckle is a metal hanging buckle, and the material of the metal hanging buckle is selected from one or more of platinum materials and stainless steel materials.
Further, the fixing portion is formed by knotting or curing the connecting wire at the proximal end and/or the distal end of the spring unit.
Further, the fixation portion has a lateral side with uniform transition, wherein the fixation portion includes a lateral side with radian, taper or gradient.
Further, the first spring unit is of a 2D primary structure or a 3D secondary structure with a spiral.
Further, the length of the first spring unit ranges from 5mm to 350mm, and/or the medical spring ring comprises 2-10 sections of the first spring unit.
Correspondingly, the invention also comprises the medical spring ring and a delivery system connected with the proximal end of the spring ring.
Compared with the prior art, the invention has the following beneficial technical effects:
the spring ring is changed into the first spring unit flexonics of adoption multistage by the integral type structure, (one), does not have direct connection just also to make between each unit no longer directly link to each other between each section first spring unit and do not have the transmission of power, and it can avoid the spring ring to fill the interference between the two first spring units of in-process phase connection, has solved the tumour upset phenomenon that the integral type spring ring produced in the operation.
Furthermore, the situation that superposition and tail end tightness generated by traditional integrated structure filling are caused by independent first spring unit filling can not be caused, so that the phenomenon of tube kicking is reduced, the operation safety of a product is improved, the risks of aneurysm rupture and prolonged operation time are avoided, and the life safety of a patient is ensured.
And furthermore, after the first spring units with different lengths are obtained by winding, the first spring units are flexibly connected without processing and manufacturing the spring units with a plurality of moulds outputting a plurality of length specifications, the production process is simple and convenient, the development cost of the moulds is effectively saved, the production efficiency is improved, and meanwhile, the production process is simplified.
Drawings
Fig. 1 is a schematic diagram illustrating a medical spring coil according to one embodiment of the present invention.
Fig. 2 is a schematic structural view illustrating the structure of the medical spring coil according to the second embodiment of the present invention, in which the connecting lines inside the thin spring are knotted to form a buckle.
Fig. 3 is a schematic structural view illustrating a metal ring hanging buckle connected to the interior of a thin spring in a medical spring ring according to a second embodiment of the present invention.
Fig. 4 is a schematic structural view illustrating the connecting lines inside the medical spring coil formed by knotting to form a fastener according to the third embodiment of the present invention.
Fig. 5 is a schematic structural view illustrating the second spring unit of the medical spring coil extending relative to the first spring unit and having a variable diameter according to the third embodiment of the present invention.
In the drawings, the reference numbers: 1. a first spring unit; 2. a delivery system; 301. a connecting wire; 302. fastening a buckle; 303. hanging and buckling; 4. a fixed part; 5. anti-unwinding yarn; 6. a second spring unit.
Detailed Description
In order to make the objects, aspects and advantages of the present invention more apparent, a medical spring coil according to the present invention will be described in further detail with reference to the accompanying drawings and the following detailed description. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise scale for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention. To make the objects, features and advantages of the present invention comprehensible, reference is made to the accompanying drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the present invention, so that the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.
In order to describe the structure of the medical device more clearly, the present invention defines the terms "distal end" and "proximal end", which are terms used exclusively in the field of medical instruments, and specifically, the term "distal end" refers to the end away from the operator during surgery, and the term "proximal end" refers to the end close to the operator during surgery, taking fig. 1 as an example, the right side of the first spring unit in fig. 1 is the proximal end, and the left side of the first spring unit in fig. 1 is the distal end.
First embodiment of medical spring coil:
referring to fig. 1, the medical spring coil comprises at least two sections of first spring units 1, and adjacent first spring units 1 are flexibly connected.
Further, referring to fig. 1, the first spring unit 1 preferably has 2 to 10 sections, and in the spring ring provided by this embodiment, the first spring unit 1 preferably has 2 to 5 sections, and the adjacent first spring units 1 are flexibly connected end to end. The first spring unit 1 includes, but is not limited to, a spring structure having a primary structure of a coil 2D or a secondary structure of 3D or the remaining morphology.
Further, the flexible connection selects a polymer wire as the connection wire 301, the proximal end and/or the distal end of the connection wire 301 is extended and penetrates into the first spring unit 1, and the extended portion penetrating into the first spring unit 1 forms the anti-unwinding wire 5 (i.e. the anti-unwinding wire 5 and the connection wire 301 are the same part). The above-mentioned extending portions penetrating into the first spring unit 1 are connected to the proximal end and the distal end of the first spring unit 1, respectively, the connection wire 301 is single-stranded or multi-stranded, and the anti-unwinding wire 5 is single-stranded or multi-stranded. Further, this embodiment provides a medical spring coil in which the above-mentioned anti-unwinding wires 5 are connected to the proximal and distal ends of the first spring unit 1 preferably by bonding. In another embodiment of the present invention, the above-mentioned connection method may be a mechanical connection method such as knotting.
Further, in another embodiment of the present invention, a polymer wire is selected as the connection wire 301 for flexible connection, the proximal end and the distal end of the connection wire 301 are respectively connected to the anti-unwinding wire 5 disposed inside the first spring unit 1 (i.e. the anti-unwinding wire 5 is a separate part and is different from the connection wire 301), in this embodiment, the proximal end of the anti-unwinding wire 5 is connected to the proximal end of the first spring unit 1, and the distal end of the anti-unwinding wire 5 is connected to the distal end of the first spring unit 1. The connecting wire 301 is single-stranded or multi-stranded, and the anti-unwinding wire 5 is single-stranded or multi-stranded. Further, this embodiment provides a medical spring coil in which the above-mentioned anti-unwinding wires 5 are connected to the proximal and distal ends of the first spring unit 1 preferably by bonding. In another embodiment of the present invention, the above-mentioned connection method can also be selected from mechanical connection methods such as knotting or using hooks as intermediate connecting members.
Specifically, the polymer filaments used as the connecting wire 301 include, but are not limited to, filaments such as nylon and PP, the length of the connecting wire 301 ranges from 0.1mm to 1mm, and the most preferable range of the connecting wire 301 in the medical spring coil provided in this embodiment is 0.3 mm to 0.6 mm.
Further, referring to fig. 1, the connection portion of the connection line 301 and the proximal end and/or the distal end of the first spring unit 1 forms a fixing portion 4, the fixing portion 4 has an outer side surface with uniform transition, wherein the fixing portion 4 includes an outer side surface with radian, taper or gradient. The fixing portion 4 is formed by knotting or curing a bonding wire 301 at the proximal end and/or the distal end of the first spring unit 1.
Example two medical spring coil:
the first spring unit 1 and the connecting wire 301 in the second embodiment are the same as those in the first embodiment, but the second embodiment is different from the first embodiment in that the medical spring coil is provided with the second spring unit 6 and the fixing portion 4 is eliminated, and the specific structure of the medical spring coil provided with the second spring unit 6 is described as follows:
further, referring to fig. 2, the connection wire 301 is connected to the proximal end and/or the distal end of the first spring unit 1 through the second spring unit 6. Specifically, the second spring unit 6 has a portion extending into the first spring unit 1, the second spring unit 6 is a thin spring ring, and the material of the second spring unit 6 includes, but is not limited to, one or more of platinum material and stainless material. The second spring unit 6 is connected with the first spring unit 1, specifically, the second spring unit 6 is coaxially nested with the first spring unit 1, that is, the second spring unit 6 is an independent structure and is different from the first spring unit 1. The outer diameter of the portion of the second spring unit 6 embedded in the first spring unit 1 matches the inner diameter of the first spring unit 1, that is, the outer diameter of the portion of the second spring unit 6 embedded in the first spring unit 1 is substantially equal to the inner diameter of the first spring unit 1, and the outer diameter of the other portion of the second spring unit 6 not embedded in the first spring unit 1 (that is, the portion of the second spring unit 6 exposed outside the first spring unit 1) may be substantially equal to the inner diameter of the first spring unit 1, or may be larger than the inner diameter of the first spring unit 1.
Further, referring to fig. 2, in another embodiment of the present invention, when the connection wire 301 is connected to the proximal end and/or the distal end of the first spring unit 1 through the second spring unit 6, one end of the connection wire 301 extending into the first spring unit 1 is tied to form a buckle 302, the buckle 302 forms a barrier inside the second spring unit 6, and the buckle 302 prevents from being separated from the second spring unit 6. The above-mentioned tie button 302 is connected to the anti-unwinding wire 5 provided inside the first spring unit 1.
Further, in another embodiment of the present invention, the connection wire 301 is connected to the proximal end and/or the distal end of the first spring unit 1 via the second spring unit 6. Specifically, the second spring unit 6 is an extension section of the proximal end and/or the distal end of the first spring unit 1, that is, the second spring unit 6 and the first spring unit 1 belong to the same part, and the structure and the material of the second spring unit 6 are the same as those of the first spring unit 1. Wherein the inner diameter of the second spring unit 6 is smaller than the inner diameter of the first spring unit 1 for positioning the tie button 302 to prevent the tie button 302 from being disengaged from the second spring unit 6.
Further, referring to fig. 3, in another embodiment of the present invention, at least two hanging buckles 303 are selected as a connecting member for the flexible connection between the adjacent first spring units 1, in the embodiment of fig. 3, there are two hanging buckles 303, adjacent ends of the two hanging buckles 303 are connected to each other, and proximal ends and/or distal ends of the two connected hanging buckles 303 extend into the proximal ends and/or distal ends of the first spring units 1 through the second springs 6 and are connected to the first spring units 1. In this embodiment, the hanging buckle 303 is a metal hanging buckle, and the material of the metal hanging buckle includes, but is not limited to, one or more of platinum material and stainless steel material. The adjacent hanging buckles 303 are connected with each other, one end of each hanging buckle 303 penetrating through the second spring unit 6 and extending into the first spring unit 1 is a hanging buckle ring, the volume of each hanging buckle ring is larger than the inner diameter of the second spring unit 6, so that the hanging buckles 303 are not easy to separate from the second spring unit 6, and the anti-unscrewing wires 5 arranged inside the first spring unit 1 are knotted on the hanging buckle rings to play a role in fixing the anti-unscrewing wires 5.
Example three of a medical spring coil:
the medical spring ring of the third embodiment adopts the first spring unit 1 and the connecting line 301 which have the same structure as those of the second embodiment, but the medical spring ring of the third embodiment is different from that of the second embodiment in the structure of the second spring unit 6, specifically as follows:
further, referring to fig. 4, the connection wire 301 is connected to the proximal end and/or the distal end of the first spring unit 1 through the second spring unit 6. Specifically, the second spring unit 6 is coaxially nested with the first spring unit 1, that is, the second spring unit 6 is an independent structure and is different from the first spring unit 1, but in the third embodiment, the connecting wire 301 is fixed to the second spring unit 6 through reducing.
Specifically, after the first spring unit 1 and the second spring unit 6 are connected in a nested manner, the reducing refers to that the outer diameters of at least a part of the second spring unit 6 exposed outside the first spring unit 1 and/or at least a part of the second spring unit 6 arranged in the first spring unit 1 are reduced in a step shape until the connecting line 301 can be fixed, and at this time, the inner diameter of the first spring unit 1 is not completely equal to the outer diameter of the second spring unit 6.
In another embodiment of the present invention, the second spring unit 6 may also be an extension line of a proximal end and/or a distal end of the first spring unit 1, that is, the second spring unit 6 is an extension of the first spring unit 1, and the second spring unit 6 and the first spring unit 1 belong to the same integral part, the structure and the material of the second spring unit 6 are the same as those of the first spring unit 1, and the second spring unit 6 extending from the first spring unit 1 also fixes the connection line 301 through reducing, without adding the fixing portion 4 as described in the first embodiment. Referring to fig. 4, in this embodiment, one end of the connecting wire 301 knotted to form a buckle 302 is located at the proximal/distal end of the second spring unit 6. Referring to fig. 4, one of the fasteners 302 is located at the proximal end of the second spring unit 6 with the variable diameter, and the other fastener 302 is located at the distal end of the second spring unit 6 with the variable diameter, which form a block inside the second spring unit 6 to prevent the second spring unit 6 from being separated.
In another embodiment of the present invention, referring to fig. 5, the second spring unit 6 may also be an extension line of the proximal end and/or the distal end of the first spring unit 1, but the second spring unit 6 fixes the connection line through the extreme end circle with variable diameter (i.e. the circle with the smallest outer diameter in at least part of the second spring unit 6 exposed outside the first spring unit 1).
Further, in another embodiment of the present invention, the spring ring is formed by two segments of the first spring unit 1, each segment of the first spring unit 1 has a length of 5mm, and the total length of the spring ring is 10mm (excluding the length of the connecting line 301).
Further, in another embodiment of the present invention, the spring ring adopts two sections of the first spring units 1, the length of each section of the first spring unit 1 is 350mm, and the total length of the spring ring is 700mm (excluding the length of the connecting line 301).
Further, in another embodiment of the present invention, the spring ring adopts three sections of the first spring units 1, the length of each section of the first spring unit 1 is 90mm, and the total length of the spring ring is 270mm (excluding the length of the connecting line 301).
Further, in another embodiment of the present invention, the spring ring adopts five sections of the first spring units 1, each section of the first spring units 1 has a length of 60mm, and the total length of the spring ring is 300mm (excluding the length of the connecting line 301).
Correspondingly, the invention also provides a spring coil conveying system, which comprises the medical spring coil and a conveying system 2 connected with the proximal end of the spring coil, wherein the first spring unit 1 of the spring coil at the tail end is mechanically or otherwise connected with the conveying system 2.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (18)
1. A medical spring coil, which is characterized in that: the spring ring comprises at least two sections of first spring units, and the adjacent first spring units are flexibly connected.
2. The medical spring coil of claim 1, wherein: the flexible connection selects a polymer wire as a connection line, the near end and/or the far end of the connection line are/is extended and penetrate into the first spring unit, and the extension part penetrating into the first spring unit forms an anti-unwinding wire.
3. The medical spring coil of claim 1, wherein: the flexible connection selects a polymer wire as a connecting wire, and the near end and the far end of the connecting wire are respectively connected with an anti-unwinding wire arranged in the first spring unit.
4. The medical spring coil as set forth in any one of claims 2-3, wherein: the connecting wire is single-stranded or multi-stranded, and the anti-unwinding wire is single-stranded or multi-stranded.
5. The medical spring coil as set forth in any one of claims 2-3, wherein: the length range of the connecting line is 0.1 mm-1 mm.
6. The medical spring coil as set forth in any one of claims 2-3, wherein: the connecting line and the connecting part of the near end and/or the far end of the first spring unit form a fixing part.
7. The medical spring coil as set forth in any one of claims 2-3, wherein: the connecting wire is connected with the proximal end and/or the distal end of the first spring unit through a second spring unit.
8. The medical spring coil of claim 7, wherein: the second spring unit is an extension section of the near end and/or the far end of the first spring unit, and the connecting wire is fixed by the second spring unit through reducing.
9. The medical spring coil of claim 7, wherein: the second spring unit and the first spring unit are coaxially nested, and the inner diameter of the first spring unit is equal to or different from the outer diameter of the second spring unit.
10. The medical spring coil of claim 7, wherein: one end of the connecting wire extending into the first spring unit is knotted to form a fastener, and the fastener is connected with the near end and/or the far end of the first spring unit through the second spring unit.
11. The medical spring coil as set forth in claim 1, wherein: the spring ring further comprises a second spring unit which is coaxially connected with the first spring unit in a nested mode, and the outer diameter of the second spring unit is equal to or different from the inner diameter of the first spring unit.
12. The medical spring coil of claim 11, wherein: the flexible connection selects at least two hanging buckles as a connecting piece, the adjacent ends of the at least two hanging buckles are connected with each other, and the near ends and/or far ends of the at least two hanging buckles which are connected penetrate through the second spring to extend into the near ends and/or far ends of the first spring unit and are connected with the first spring unit.
13. The medical spring coil of claim 12, wherein: the hanging buckle is a metal hanging buckle, and the material of the metal hanging buckle is selected from one or more of platinum materials and stainless steel materials.
14. The medical spring coil of claim 6, wherein: the fixing part is formed by knotting the connecting wire at the near end and/or the far end of the spring unit or by curing the connecting wire by adopting a viscous material.
15. The medical spring coil of claim 14, wherein: the fixing part is provided with an outer side face with uniform transition, wherein the fixing part comprises an outer side face with radian, taper or gradient.
16. The medical spring coil as set forth in any one of claims 1-3, wherein: the first spring unit is of a primary structure with a spiral 2D or a secondary structure with a spiral 3D.
17. The medical spring coil as set forth in any one of claims 1-3, wherein: the length range of the first spring unit is 5 mm-350 mm, and/or the medical spring ring comprises 2-10 sections of the first spring unit.
18. A spring coil conveying system, characterized by: a medical spring coil according to any of claims 1-17 and a delivery system coupled to a proximal end of the spring coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010998715.6A CN114246626A (en) | 2020-09-22 | 2020-09-22 | Medical spring coil and conveying system comprising same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010998715.6A CN114246626A (en) | 2020-09-22 | 2020-09-22 | Medical spring coil and conveying system comprising same |
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| Publication Number | Publication Date |
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| CN114246626A true CN114246626A (en) | 2022-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010998715.6A Pending CN114246626A (en) | 2020-09-22 | 2020-09-22 | Medical spring coil and conveying system comprising same |
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| CN (1) | CN114246626A (en) |
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| CN106029011A (en) * | 2013-12-20 | 2016-10-12 | 微温森公司 | Device delivery system |
| CN108814670A (en) * | 2018-10-12 | 2018-11-16 | 微创神通医疗科技（上海）有限公司 | Implantation material and embolization device |
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| WO2001028434A1 (en) * | 1999-10-04 | 2001-04-26 | Microvention, Inc. | Filamentous embolic device with expansible elements |
| US20030212419A1 (en) * | 2001-06-14 | 2003-11-13 | West Clinton B. | Aneurysm embolization device and deployment system |
| US20060116713A1 (en) * | 2004-11-26 | 2006-06-01 | Ivan Sepetka | Aneurysm treatment devices and methods |
| CN106029011A (en) * | 2013-12-20 | 2016-10-12 | 微温森公司 | Device delivery system |
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