CN114469468B - Limiting device of adjustable bracket - Google Patents

Limiting device of adjustable bracket Download PDF

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Publication number
CN114469468B
CN114469468B CN202210066109.XA CN202210066109A CN114469468B CN 114469468 B CN114469468 B CN 114469468B CN 202210066109 A CN202210066109 A CN 202210066109A CN 114469468 B CN114469468 B CN 114469468B
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China
Prior art keywords
adjusting wire
developing
support body
adjusting
spring
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CN202210066109.XA
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Chinese (zh)
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CN114469468A (en
Inventor
顾怡
方晓东
吴健平
赵杰
段志邦
李志刚
王国辉
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Shanghai Xinwei Medical Technology Co ltd
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Shanghai Xinwei Medical Technology Co ltd
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Priority to CN202210066109.XA priority Critical patent/CN114469468B/en
Publication of CN114469468A publication Critical patent/CN114469468A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/9517—Instruments specially adapted for placement or removal of stents or stent-grafts handle assemblies therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/9522—Means for mounting a stent or stent-graft onto or into a placement instrument
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • A61B2017/2212—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having a closed distal end, e.g. a loop
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
    • A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Transplantation (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Cardiology (AREA)
  • Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Surgical Instruments (AREA)

Abstract

The invention discloses a limiting device of an adjustable support, which comprises a support structure and a conveying mechanism, wherein the support structure comprises a developing spring, a developing marking section is connected to the outer part of the developing spring, a support body is arranged at the outer part of the developing marking section, the conveying mechanism comprises an adjusting wire, the outer part of the adjusting wire is provided with a limiting mechanism, the adjusting wire penetrates through a push rod, the inner part of a handle is provided with a push mechanism, one end of the adjusting wire is fixed with one end of the support body, which is close to the developing spring, and the other end of the support body is fixedly connected with the other end of the support body, and the contraction and expansion of the support body are controlled by adjusting the length of the adjusting wire. The device clearly can adjust the size degree of the stent body after adjustment, avoid influencing the thrombus taking performance of the stent body and influencing the accuracy and the efficiency during operation, increase the maximum utilization rate of the adjustable stent body in applicable blood vessels, and ensure the adherence in applicable blood vessels.

Description

Limiting device of adjustable bracket
Technical Field
The invention relates to the field of medical instruments, in particular to a limiting device of an adjustable bracket.
Background
Cerebral apoplexy is a local brain dysfunction caused by acute cerebrovascular diseases, and in recent years, the incidence rate of cerebral apoplexy gradually rises, and the cerebral apoplexy becomes a disease of the prostate at the mortality rate of China.
At present, the treatment mode of cerebral apoplexy mainly depends on drug thrombolysis and interventional instruments to remove thrombus, but the time window of the mode of drug thrombolysis is too short, the better treatment effect can be obtained only by adopting drug thrombolysis treatment within 4.5 hours, and most patients do not accord with the condition of drug thrombolysis treatment, so that the applicability of the treatment mode of interventional instrument thrombolysis is wider.
The patent numbers published in China are: in the invention of CN108904008A, a controllable cerebrovascular thrombus taking support and a conveying control system are introduced, and the diameter of a thrombus taking device can be accurately controlled according to the thrombus size through scales on a handle, so that the control is accurate, and the error is reduced. However, in the invention, the conveying handle only comprises a graduated scale, a locking button and a regulating button, and the regulating range of the bracket is not limited, so that the degree of the regulation of the bracket cannot be controlled, and the operability and the efficiency of the bracket are affected.
The patent numbers published in China are: in the invention of CN109223107A, an adjustable thrombus taking support is introduced, which comprises a thrombus taking support, a conveying system and a pushing handle. The distance between the pushing handle part and the shell, which is the difference of the length of the bracket when the thrombus taking bracket expands and contracts, is the numerical value of the diameter change of the bracket corresponding to the mark formed on the pushing handle shell pushing handle, and although the relation between the handle adjusting degree and the bracket adjusting is clear, the adjusting range of the bracket is not limited, and the limit of the clear adjusting is not used, so that the adjusting degree of the bracket cannot be controlled.
It can be seen from the above two inventions that the related patent of the adjustable stent does not specifically explain the size range of the stent after the stent is released, especially how to control the size range of the stent, which may cause the adjustable stent to be too large in adjustment, damage the vessel wall, or too small, affect the thrombus removal performance of the stent, and affect the accuracy and efficiency during the operation.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a limiting device of an adjustable bracket.
In order to achieve the above purpose, the present invention adopts the following technical scheme: comprises a bracket structure and a conveying mechanism;
the support structure comprises a developing spring, the exterior of the developing spring is connected with a developing marking section, and a support body is arranged outside the developing marking section;
the conveying mechanism comprises an adjusting wire, a limiting mechanism is arranged outside the adjusting wire, the adjusting wire penetrates through a pushing rod, a handle is connected to the outside of the pushing rod, a pushing mechanism is arranged inside the handle, the pushing mechanism comprises a rack, a gear is connected to the outside of the rack in a meshed mode, a sliding rail is connected to the lower end of the rack in a sliding mode, and a limiting plate positioned at the front end of the rack is arranged at the upper end of the sliding rail;
one end of the adjusting wire is fixed with one end of the support body, which is close to the developing spring, and the contraction and expansion of the support body are controlled by adjusting the length of the adjusting wire.
As a further description of the above technical solution, the two ends of the bracket body are connected with the developing marking section.
As further description of the technical scheme, the bracket body is formed by mixed braiding of nickel-titanium and platinum alloy filaments, and the bracket body is a spring-shaped body with the contour diameters of two ends smaller than the middle contour diameter.
As a further description of the above technical solution, the developing spring is made of platinum iridium alloy or a radiopaque metal material by winding.
As a further description of the above technical solution, the developing mark section is made of platinum iridium alloy or a radiopaque metal material.
As further description of the technical scheme, the adjusting wire and the pushing rod are made of stainless steel materials.
As a further description of the above technical solution, the limit mechanism is a limit spring or a limit ring.
As a further description of the above solution, the limiting mechanism is arranged inside the adjusting wire inside the handle or outside the adjusting wire in the inner region of the bracket body.
The invention has the following beneficial effects:
1. according to the invention, the rack is driven to move by the gear in the handle, so that the adjusting wire moves to a position close to the pushing rod until the limiting spring on the adjusting wire in the bracket body resists the end part of the pushing rod, and the adjusting wire is limited to move to the pushing rod continuously, so that the expansion degree of the adjustable bracket is limited, the adjusting range of the adjustable bracket body is controlled, the size degree of the adjustable bracket body after adjustment is definitely determined, the adjusting degree of the bracket body is ensured not to be too large or too small, the thrombus taking performance of the bracket body is influenced, the accuracy and efficiency of operation are influenced, the maximum utilization rate of the adjustable bracket body in a suitable blood vessel is increased, and the adherence in the suitable blood vessel is ensured.
2. According to the invention, the limiting mechanism is arranged outside the adjusting wire, and can be arranged outside the adjusting wire at the center of the bracket body or inside the handle according to different requirements.
Drawings
FIG. 1 is a schematic view of a spacing device for an adjustable bracket according to the present invention;
fig. 2 is a schematic diagram of a pushing mechanism in embodiment 2 of a limiting device of an adjustable bracket according to the present invention;
fig. 3 is a schematic view of a pushing mechanism in embodiment 3 in a limiting device of an adjustable bracket according to the present invention.
Legend description:
1. a support structure; 2. a conveying mechanism; 3. a developing spring; 4. developing the marking section; 5. a bracket body; 6. an adjusting wire; 7. a limiting mechanism; 8. a push rod; 9. a handle; 10. a pushing mechanism; 101. a rack; 102. a gear; 103. a slide rail; 104. a limiting plate; 105. a baffle; 106. and a limit column.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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 the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present invention; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, one embodiment provided by the present invention: a limiting device of an adjustable bracket comprises a bracket structure 1 and a conveying mechanism 2;
the support structure 1 comprises a developing spring 3, a developing marking section 4 is connected to the outer part of the developing spring 3, and a support body 5 is arranged outside the developing marking section 4;
the conveying mechanism 2 comprises an adjusting wire 6, a limiting mechanism 7 is arranged outside the adjusting wire 6, the adjusting wire 6 penetrates through a pushing rod 8, a handle 9 is connected to the outside of the pushing rod 8, and a pushing mechanism 10 is arranged inside the handle 9;
one end of the adjusting wire 6 is fixed with one end of the bracket body 5 close to the developing spring 3, and the contraction and expansion of the bracket body 5 are controlled by adjusting the length of the adjusting wire 6.
The gear 102 in the handle 9 drives the rack 101 to move, so that the adjusting wire 6 moves to a position close to the pushing rod 8 until the limiting spring on the adjusting wire 6 in the bracket body 5 resists the end part of the pushing rod 8, the limiting adjusting wire 6 continues to move to the pushing rod 8, the expansion degree of the adjustable bracket is limited, the adjusting range of the adjustable bracket body 5 is controlled, the degree of the adjustable bracket body 5 after being adjusted is definitely controlled, the adjusting degree of the bracket body 5 is ensured not to be too large or too small, the thrombus taking performance of the bracket body 5 is influenced, the accuracy and efficiency of operation are influenced, the maximum utilization rate of the adjustable bracket body 5 in a applicable blood vessel is increased, and the adherence in the applicable blood vessel is ensured.
Further, both ends of the support body 5 are connected with the developing mark sections 4, so that the support body 5 can be positioned, and meanwhile, the position of the support body 5 can be observed.
Referring to fig. 2, the present invention provides example 2: the pushing mechanism 10 comprises a rack 101, a gear 102 is connected to the outside of the rack 101 in a meshed manner, a sliding rail 103 is slidably connected to the lower end of the rack 101, a limiting plate 104 positioned at the front end of the rack 101 is arranged at the upper end of the sliding rail 103, the rack 101 is driven to move through the adjusting gear 102, so that the adjusting wire 6 is pulled to move proximally until a limiting mechanism 7 which is a limiting spring or a limiting ring abuts against the limiting plate 104, the adjusting wire 6 is limited to move, and at the moment, the adjusting wire 6 can not move towards the end close to the handle 9 any more, so that the moving range of the adjusting wire 6 is controlled, and the adjusting range of the support body 5 is further controlled.
Referring to fig. 3, the present invention provides example 3: the pushing mechanism 10 further comprises a baffle 105 arranged at the front end of the rack 101, a limit column 106 is arranged in the handle 9, the limit column 106 is arranged on a moving path of the rack 101, the rolling gear 102 drives the rack 101 to move proximally until the baffle 105 abuts against the limit column 106, the movement of the rack 101 is limited, the moving range of the adjusting wire 6 is limited, and the adjusting range of the size of the bracket body 5 is controlled.
Further, the support body 5 is formed by mixed braiding of nickel titanium and platinum alloy filaments, and the support body 5 is a spring-shaped body with two sections of contour diameters smaller than the middle contour diameter.
Furthermore, the developing spring 3 is made of platinum iridium alloy or a radiopaque metal material by winding, and the developing spring 3 has certain elasticity, so that the overstretching property of the developing spring 3 in a blood vessel can be improved, and meanwhile, puncture and abrasion to the wall of the blood vessel are avoided.
Further, the development mark section 4 is a platinum iridium alloy or a radiopaque metal material.
Further, the adjusting wire 6 and the pushing rod 8 are made of stainless steel materials, and the adjusting wire 6 penetrates through the pushing rod 8 and is connected with the pushing mechanism 10.
Further, the limiting mechanism 7 is a limiting spring or a limiting ring.
Further, the limiting mechanism 7 is arranged inside the handle 9 of the adjusting wire 6 or outside the adjusting wire 6 in the inner area of the bracket body 5, and can be adjusted according to actual scenes.
Working principle: when the device is used, the gear 102 in the handle 9 is rotated to drive the rack 101 to move, so that the adjusting wire 6 moves to a position close to the pushing rod 8 until the limiting spring on the adjusting wire 6 in the bracket body 5 resists the end part of the pushing rod 8, the adjusting wire 6 is limited to continue to move to the pushing rod 8, the expansion degree of the adjustable bracket is limited, the adjusting range of the adjustable bracket body 5 is controlled, the degree of the adjustable bracket body 5 after being adjusted is definitely controlled, the adjusting degree of the bracket body 5 is ensured not to be too large or too small, the thrombus taking performance of the bracket body 5 is influenced, the accuracy and efficiency in operation are influenced, the maximum utilization rate of the adjustable bracket body 5 in a suitable blood vessel is increased, and the wall attachment in the suitable blood vessel is ensured.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.

Claims (8)

1. Limiting device of adjustable support, its characterized in that: comprises a bracket structure (1) and a conveying mechanism (2);
the support structure (1) comprises a developing spring (3), a developing marking section (4) is connected to the outer part of the developing spring (3), and a support body (5) is arranged on the outer part of the developing marking section (4);
the conveying mechanism (2) comprises an adjusting wire (6), a limiting mechanism (7) is arranged outside the adjusting wire (6), the adjusting wire (6) penetrates through a pushing rod (8), a handle (9) is connected to the outside of the pushing rod (8), a pushing mechanism (10) is arranged inside the handle (9), the pushing mechanism (10) comprises a rack (101), a gear (102) is connected to the outside of the rack (101) in a meshed mode, a sliding rail (103) is connected to the lower end of the rack (101) in a sliding mode, and a limiting plate (104) located at the front end of the rack (101) is arranged at the upper end of the sliding rail (103);
one end of the adjusting wire (6) is fixed with one end of the support body (5) close to the developing spring (3), and the contraction and expansion of the support body (5) are controlled by adjusting the length of the adjusting wire (6).
2. The adjustable bracket spacing device of claim 1, wherein: both ends of the support body (5) are connected with the developing marking section (4).
3. The adjustable bracket spacing device of claim 1, wherein: the support body (5) is formed by mixed weaving of nickel titanium and platinum alloy filaments, and the support body (5) is a spring-shaped body with the two end outline diameters smaller than the middle outline diameter.
4. The adjustable bracket spacing device of claim 1, wherein: the developing spring (3) is formed by winding platinum iridium alloy or a radiopaque metal material.
5. The adjustable bracket spacing device of claim 1, wherein: the developing mark section (4) is made of platinum iridium alloy or a radiopaque metal material.
6. The adjustable bracket spacing device of claim 1, wherein: the adjusting wire (6) and the pushing rod (8) are made of stainless steel materials.
7. The adjustable bracket spacing device of claim 1, wherein: the limiting mechanism (7) is a limiting spring or a limiting ring.
8. The adjustable bracket spacing device of claim 1, wherein: the limiting mechanism (7) is arranged inside the adjusting wire (6) positioned in the handle (9) or outside the adjusting wire (6) positioned in the inner area of the bracket body (5).
CN202210066109.XA 2022-01-20 2022-01-20 Limiting device of adjustable bracket Active CN114469468B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210066109.XA CN114469468B (en) 2022-01-20 2022-01-20 Limiting device of adjustable bracket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210066109.XA CN114469468B (en) 2022-01-20 2022-01-20 Limiting device of adjustable bracket

Publications (2)

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CN114469468A CN114469468A (en) 2022-05-13
CN114469468B true CN114469468B (en) 2023-05-26

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101502693A (en) * 2009-03-27 2009-08-12 北京天地和协科技有限公司 Guiding wire
US20100318180A1 (en) * 2009-06-15 2010-12-16 Boston Scientific Scimed, Inc. Multi-layer stent assembly
US11583302B2 (en) * 2017-03-10 2023-02-21 Shanghai Heartcare Medical Technology Co., Ltd. Thrombectomy device system
CN209678625U (en) * 2018-12-26 2019-11-26 苏州博欣医疗科技有限公司 One kind is novel to take bolt bracket and thrombus withdrawing device
CN113520519A (en) * 2021-04-30 2021-10-22 常州凯尼特医疗科技有限公司 Adjustable bracket type bolt taking device
CN113693676A (en) * 2021-08-24 2021-11-26 北京泰杰伟业科技有限公司 Adjustable bolt taking device

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