CN117653252A - Protective sleeve and interventional guide device with same - Google Patents
Protective sleeve and interventional guide device with same Download PDFInfo
- Publication number
- CN117653252A CN117653252A CN202311846374.0A CN202311846374A CN117653252A CN 117653252 A CN117653252 A CN 117653252A CN 202311846374 A CN202311846374 A CN 202311846374A CN 117653252 A CN117653252 A CN 117653252A
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- Prior art keywords
- opening
- assembly
- conveying
- guide device
- cavity
- Prior art date
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- 230000001681 protective effect Effects 0.000 title claims abstract description 32
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 239000003292 glue Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 abstract description 3
- 230000002028 premature Effects 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- -1 hydrogen ions Chemical class 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000022211 Arteriovenous Malformations Diseases 0.000 description 1
- 206010003226 Arteriovenous fistula Diseases 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005744 arteriovenous malformation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008338 local blood flow Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- A61B2017/12063—Details concerning the detachment of the occluding device from the introduction device electrolytically detachable
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Reproductive Health (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Neurosurgery (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to the technical field of medical instruments, in particular to a protective sleeve and an interventional guide device with the same. A protective sheath adapted to connect a delivery assembly and a coil assembly of an interventional guide device, comprising: the body, have along the relative first opening and the second opening that sets up of conveying direction of conveying subassembly, first opening and second opening pass through the cavity through-connection, the cavity is suitable for the cover to establish in the periphery of connecting the core silk of conveying subassembly and spring coil subassembly, first opening is suitable for and is fixed with conveying the distal end of subassembly, the second opening is suitable for and the proximal end cooperation of spring coil subassembly, and still be equipped with at least one third opening that link up the setting with the cavity on the lateral wall of body, in order to allow outside fluid to reach the naked position of core silk through third opening and cavity. The invention provides a protective sleeve for reducing bending damage of a core wire and reducing the risk of premature release of a spring ring and an interventional guide device with the protective sleeve.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a protective sleeve and an interventional guide device with the same.
Background
The spring ring is a plugging implant for arteriovenous malformations and aneurysms, and is also commonly used for emergency vascular closure when the blood vessel is accidentally damaged and bleeds in surgical operation. The action mechanism of the spring ring is to reduce the local blood flow velocity and promote thrombosis, thereby playing a role in blocking. In order to realize accurate delivery and release of the coil, a delivery device is required to be used in combination when the coil is implanted into a patient, and the coil is delivered to a focus position by the delivery device. The delivery device and the coil are two separate components, and the coil needs to be released from the delivery device after implantation is completed. The release mode between the conveying device and the spring ring comprises mechanical release, electrolytic release, thermal release, hydrolytic release and the like.
For interventional guides, such as electrolytic trip coils, the trip principle is by the process of electrolysis of water, etching or fusing the anodic metal portion. The current path of the electrolysis process is as follows: the anode current direction is from the positive electrode of the power supply to the stainless steel core wire through the connecting pipe; the cathode current direction is from the negative electrode of the power supply to the stainless steel spring coil through the hypotube, the medium is electrolyte, electrons on the surface of the stainless steel spring coil exposed by the cathode are gathered, electrons are generated by hydrogen ions in blood, electrons are lost by iron atoms of the stainless steel core wire exposed by the anode, free iron ions are generated, and the core wire is corroded and broken. Because the conveying device is connected with the spring ring through a core wire (coated stainless steel wire) for connecting the conveying device and part of the spring ring, the core wire with the length of about 0.2mm is exposed between the conveying device and the spring ring in order to ensure that the release is normally carried out. The connecting area comprising the exposed core wire is a weak area in the pushing process, when entering into a tortuous blood vessel, the core wire can be bent, so that force cannot be conducted to the spring coil, pushing resistance is increased, the core wire can be broken when serious, and the spring coil is released in advance.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the core wire is likely to bend or break in the conveying process of the electrolytic release spring ring in the prior art, so that the spring ring is released in advance, and the protective sleeve for reducing the bending damage of the core wire and reducing the risk of the spring ring releasing in advance and the intervention guiding device with the protective sleeve are provided.
In order to solve the above technical problems, the present invention provides a protective sleeve, which is suitable for connecting a conveying assembly and a spring ring assembly of an interventional guiding device, and comprises:
the body, have along the relative first opening and the second opening that sets up of conveying direction of conveying subassembly, first opening and second opening pass through the cavity through-connection, the cavity is suitable for the cover to be established at the periphery of connecting the core silk of conveying subassembly and spring coil subassembly, first opening be suitable for with conveying subassembly's distal end is fixed, the second opening be suitable for with the proximal end cooperation of spring coil subassembly, just still be equipped with at least one with the third opening that the cavity link up the setting on the lateral wall of body, in order to allow external fluid to pass through third opening and cavity reach the naked position of core silk.
Optionally, the area of at least one of the third openings is at least 20% of the area of the side wall of the body.
Optionally, the third opening comprises at least two of the third openings circumferentially spaced along the sidewall of the body or at least two of the third openings spaced along the conveying direction of the conveying assembly.
Optionally, the body is any one of a cylinder, a cuboid, a cube or a cone.
Optionally, the body is made of metal or hard plastic.
Optionally, the length of the body is 0.1-10mm, the outer diameter is 0.1-10mm, and the inner diameter is 0.05-9.5mm.
Optionally, the distal end of the body is provided with a tapered closing-in, the tapered closing-in has an angle of 25 ° -35 ° and a length of 0.1-0.5mm, and the second opening is formed on the tapered closing-in.
An interventional guide device is also provided, including the protective sheath, and further including a delivery assembly, a coil assembly, and a core wire connecting the delivery assembly and the coil assembly.
Optionally, the first opening of the body is bonded or welded to the distal end of the delivery assembly and the second opening of the body abuts the proximal end of the spring coil assembly.
Optionally, the distal end of the conveying component is provided with a head structure, the head structure is arranged at intervals away from part of the coil wires of the spring coil component, and the proximal end of the spring coil component is formed with a conical glue sleeve; the outer diameter of a part of the head structure of the conveying assembly, which is far away from the spring ring assembly, is consistent with the outer diameter of the body, the other part of the head structure of the conveying assembly, which is close to the spring ring assembly, is in variable diameter arrangement, the minimum outer diameter is consistent with the inner diameter of the body, and the length of the head structure of the conveying assembly is 0.05-9.5mm.
The technical scheme of the invention has the following advantages:
1. according to the protective sleeve provided by the invention, in the conveying process, the body is sleeved on the periphery of the core wire connecting the conveying assembly and the spring ring assembly, so that the strength of the connecting part of the conveying assembly and the spring ring assembly is increased due to the supporting and protecting effects of the body, and the force transmission between the conveying assembly and the spring ring assembly can be realized, so that the bending damage of the core wire is reduced, the risk of releasing the spring ring in advance is reduced, the spring ring can smoothly reach a preset position, and the operation is smoothly performed.
2. The area of the at least one third opening of the protective sleeve provided by the invention is at least 20% of the area of the side wall of the body. The larger the area of the third opening is, the more favorable the external fluid reaches the exposed position of the core wire, the smooth release of the spring ring assembly is ensured, and the operation efficiency is improved.
3. According to the protective sleeve provided by the invention, the conical closing-in at the far end of the body is arranged, so that the reliability of connection is ensured on the premise that the far end of the body is not in direct contact with the coil wire of the spring coil assembly, and the conical closing-in is abutted with the near end of the spring coil assembly, so that the conveying assembly and the spring coil assembly can be quickly separated after the core wire is dissolved.
4. Compared with the traditional conveying assembly, the distal end of which is required to be covered with the heat shrinkage tube, the interventional guiding device provided by the invention has the advantages that only a few circles of wires are exposed to serve as a cathode, the surface area of the cathode is increased, and the release of the spring coil assembly is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a first embodiment of an interventional guide device provided by the present invention;
FIG. 2 is a schematic view of a second embodiment of an interventional guide device provided by the present invention;
FIG. 3 is a schematic view of a third embodiment of an interventional guide device provided by the present invention;
FIG. 4 is a schematic view of a fourth embodiment of an interventional guide device provided by the present invention;
fig. 5 is a schematic view of a fifth embodiment of an interventional guide device provided by the present invention.
Reference numerals illustrate:
1. a transport assembly; 2. a spring ring assembly; 3. a core wire; 4. an anode; 5. a cathode; 6. a body; 7. a third opening; 8. a cone-shaped closing-in; 9. conical glue water jacket.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
In one embodiment of the protective sheath shown in fig. 1, the end of the protective sheath, which is far away from the operator in use, is used as the distal end, and the end, which is close to the operator, is used as the proximal end, so that the protective sheath is suitable for connecting the delivery assembly 1 and the spring ring assembly 2 of the interventional guide device, which is an electrolytic spring ring in this embodiment. In order to ensure smooth electrolytic stripping, the conveying component 1 and the spring ring component 2 are connected through the core wire 3, two ends of the core wire 3 are respectively fixed with the conveying component 1 and the spring ring component 2 through dispensing, the middle of the core wire 3 is exposed with the length of about 0.1-10mm, namely, the external coating is stripped, the stainless steel wire is exposed to the outside to serve as an anode 4, electrolytic reaction is facilitated, and the exposed ring wire at the far end of the conveying component 1 and the whole protective sleeve serve as a cathode 5.
Specifically, the protective sleeve includes a body 6, the body 6 has a first opening and a second opening that are relatively disposed along the conveying direction of the conveying assembly 1, and the first opening and the second opening are connected through a cavity, that is, the first opening, the cavity and the second opening are integrally formed into a cylinder, and this embodiment is preferably a cylinder, and of course, may be any one of a cuboid, a cube or a cone, or any other regular or irregular shape, so long as the protective effect can be achieved, and no specific limitation is made herein. The cavity is adapted to fit around the outer circumference of the core wire 3 connecting the delivery assembly 1 and the coil assembly 2, the inner diameter of the cavity is larger than the diameter of the core wire 3 so that the core wire 3 can be sufficiently immersed in an external liquid, the first opening is adapted to be fixed with the distal end of the delivery assembly 1, and the second opening is adapted to be mated with the proximal end of the coil assembly 2.
Further, the side wall of the body 6 is further provided with at least one third opening 7 penetrating the cavity, so as to allow the external fluid to reach the exposed position of the core wire 3 through the third opening 7 and the cavity, where the exposed position may be a release portion, and in this embodiment, the external fluid is blood. The third openings 7 are formed by machining in the case of the protective cover machining, and the shape, number and position are not particularly limited as long as the area of at least one of the third openings 7 is at least 20% of the area of the side wall of the body 6. For example, the third openings 7 may be two slots symmetrically distributed along the circumference of the side wall of the body 6 as shown in fig. 1, with a diameter of 0.3mm and a length of 0.7mm, or three slots uniformly distributed along the circumference of the side wall of the body 6 as shown in fig. 2, or four slots uniformly distributed along the circumference of the side wall of the body 6 as shown in fig. 3, or one asymmetric slot as shown in fig. 4, or three slots uniformly distributed at intervals along the conveying direction of the conveying assembly 1, i.e. the axial direction of the body 6 as shown in fig. 5, or the third openings 7 are irregularly distributed on the side wall of the body 6.
Specifically, the material of the body 6 is metal or hard plastic. The length of the body 6 is 0.1-10mm, the outer diameter is 0.1-10mm, and the inner diameter is 0.05-9.5mm. Further, the length of the body 6 is 0.5-1.5mm, the outer diameter is 0.2-1.0mm, and the inner diameter is 0.1-0.9mm. Preferably, the length of the body 6 is 1.0mm, the outer diameter is 0.5mm, and the inner diameter is 0.4mm.
Further, a conical closing-in 8 is arranged at the far end of the body 6, the conical closing-in 8 and the body 6 are integrally processed and formed, or are fixed through bonding, the angle of the conical closing-in 8 is 25-35 degrees, the length is 0.1-0.5mm, and the second opening is formed on the conical closing-in 8. Preferably, the angle of the conical closing-in 8 is 30 degrees and the length is 0.15mm. Of course, the tapered closing-in 8 can be determined according to the design size of the spring coil assembly 2, if the outer diameter of the spring coil assembly 2 is greater than or equal to 0.5mm, the tapered closing-in 8 is not required, and the principle is that the protective sleeve cannot contact the coil wire of the spring coil assembly 2. In addition, a third opening 7 can be further arranged on the conical closing-in 8, so long as the communication between the conical closing-in 8 and the cavity of the body 6 is ensured.
One embodiment of the interventional guide device shown in fig. 1 comprises the protective sheath, a delivery assembly 1, a spring coil assembly 2, and a core wire 3 connecting the delivery assembly 1 and the spring coil assembly 2.
Specifically, the distal end of the delivery assembly 1 has a head structure, the head structure of the delivery assembly 1 is far away from a part of the spring coil assembly 2, the outer diameter of the part is consistent with the outer diameter of the body 6, preferably 0.5mm, the other part of the head structure of the delivery assembly 1 near the spring coil assembly 2 is in variable diameter, the minimum outer diameter is consistent with the inner diameter of the body 6, preferably 0.4mm, and the length is 0.05-9.5mm, preferably 0.5mm, and a certain gap is kept between part of the head structure far away from the spring coil assembly 2, for example, 6-8 coils for dispensing and fixing the core wire 3, and the first opening of the body 6 is bonded or welded and fixed with the distal end of the delivery assembly 1. The second opening of the body 6 is abutted with the proximal end of the spring coil assembly 2, the conical glue sleeve 9 is formed at the proximal end of the spring coil assembly 2, the big end of the conical glue sleeve 9 is sleeved at the proximal end of the spring coil assembly 2, the small end of the conical closing-in 8 of the body 6 is abutted on the small end of the conical glue sleeve 9, and after the core wire 3 is dissolved, the conveying assembly 1 and the spring coil assembly 2 are separated smoothly.
Fig. 2 to 5 show further embodiments of the interventional guide device, in which three, four, one third opening and three third openings 7 are provided in the circumferential direction and in the axial direction, respectively, on the protective sleeve. This embodiment is not particularly limited as long as it is ensured that the total area of the third openings 7 is at least 50% of the area of the side wall of the body 6.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (10)
1. A protective sheath, characterized by a delivery assembly (1) and a spring coil assembly (2) adapted for connecting an interventional guide device, comprising:
the body (6) is provided with a first opening and a second opening which are oppositely arranged along the conveying direction of the conveying assembly (1), the first opening and the second opening are connected through a cavity, the cavity is suitable for being sleeved on the periphery of a core wire (3) which is connected with the conveying assembly (1) and the spring ring assembly (2), the first opening is suitable for being fixed with the distal end of the conveying assembly (1), the second opening is suitable for being matched with the proximal end of the spring ring assembly (2), and at least one third opening (7) which is communicated with the cavity is further arranged on the side wall of the body (6) so as to allow external fluid to pass through the third opening (7) and the cavity to reach the exposed position of the core wire (3).
2. Protective sheath according to claim 1, characterized in that the area of at least one of the third openings (7) is at least 20% of the area of the side wall of the body (6).
3. Protective sheath according to claim 1, characterized in that the third opening (7) comprises at least two circumferentially spaced apart along a side wall of the body (6) or at least two circumferentially spaced apart along a conveying direction of the conveying assembly (1).
4. A protective sheath according to any one of claims 1-3, characterized in that the body (6) is any one of a cylinder, a cuboid, a cube or a cone.
5. A protective sheath according to any one of claims 1-3, characterized in that the material of the body (6) is metal or rigid plastic.
6. A protective sheath according to any one of claims 1-3, characterized in that the body (6) has a length of 0.1-10mm, an outer diameter of 0.1-10mm and an inner diameter of 0.05-9.5mm.
7. A protective sheath according to any one of claims 1-3, characterized in that the distal end of the body (6) is provided with a conical neck (8), the conical neck (8) having an angle of 25 ° -35 ° and a length of 0.1-0.5mm, the second opening being formed in the conical neck (8).
8. An interventional guide device, comprising a protective sheath according to any one of claims 1-7, further comprising a delivery assembly (1), a coil assembly (2) and a core wire (3) connecting the delivery assembly (1) and the coil assembly (2).
9. The interventional guide device according to claim 8, wherein a first opening of the body (6) is glued or welded to the distal end of the delivery assembly (1) and a second opening of the body (6) abuts the proximal end of the spring coil assembly (2).
10. The interventional guide device according to claim 9, wherein the distal end of the delivery assembly (1) has a head structure, the proximal end of the spring coil assembly (2) being formed with a conical glue jacket (9); the head structure of the conveying assembly (1) is far away from the outer diameter of one part of the spring ring assembly (2) and is consistent with the outer diameter of the body (6), the other part of the head structure of the conveying assembly (1) close to the spring ring assembly (2) is arranged in a variable diameter mode, the minimum outer diameter is consistent with the inner diameter of the body (6), and the length of the head structure is 0.05-9.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311846374.0A CN117653252B (en) | 2023-12-28 | 2023-12-28 | Protective sleeve and interventional guide device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311846374.0A CN117653252B (en) | 2023-12-28 | 2023-12-28 | Protective sleeve and interventional guide device with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117653252A true CN117653252A (en) | 2024-03-08 |
| CN117653252B CN117653252B (en) | 2024-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311846374.0A Active CN117653252B (en) | 2023-12-28 | 2023-12-28 | Protective sleeve and interventional guide device with same |
Country Status (1)
| Country | Link |
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| CN (1) | CN117653252B (en) |
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| CN117653252B (en) | 2024-08-23 |
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