CN113288398B - Lumbar vertebra turning device - Google Patents
Lumbar vertebra turning device Download PDFInfo
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- CN113288398B CN113288398B CN202110568033.6A CN202110568033A CN113288398B CN 113288398 B CN113288398 B CN 113288398B CN 202110568033 A CN202110568033 A CN 202110568033A CN 113288398 B CN113288398 B CN 113288398B
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- rod
- limiting
- movable rod
- main rod
- movable
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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
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
Abstract
The application relates to the field of medical equipment, in particular to a lumbar vertebra turning device. The lumbar vertebra turning device comprises a sleeve, a main rod, a movable mechanism and a limiting mechanism; the sleeve is sleeved at the tail end of the lumbar screw, part of the movable rod is contained in the inner cavity in a sliding manner, and when the movable rod slides to one end of the main rod, which is far away from the sleeve, the movable rod is rotatably connected with the main rod; and the limiting mechanism is used for limiting the sliding of the movable rod relative to the main rod and limiting the rotation of the movable rod relative to the main rod. From this, through stop gear to the restriction of movable rod's adjustment, can adjust the length that the movable rod stretched into the mobile rod to and make the movable rod rotate for the mobile rod, thereby can be through adjusting the length of this lumbar vertebrae turning device and the angle of use, the doctor of being convenient for screws up lumbar vertebrae screw at the operation in-process.
Description
Technical Field
The application relates to the field of medical equipment, in particular to a lumbar vertebra turning device.
Background
Currently, when lumbar vertebra is diseased or injured, in order to treat or further recover, surgery needs to perform fixed operation treatment on the lumbar vertebra, and lumbar vertebra screws are usually installed. In the prior art, when the lumbar vertebra screws are installed, the lumbar vertebra screws need to be screwed through the turner to fix the lumbar vertebra screws, but in the screwing process, because more instruments are used in the operation process, in the process of rotating the turner, the motion interference is easily generated between the instruments, and therefore a doctor cannot conveniently operate the turner.
Disclosure of Invention
The present application provides a lumbar upender to improve the above-mentioned problems.
The invention is particularly such that:
a lumbar vertebra turning device comprises a sleeve, a main rod, a movable mechanism and a limiting mechanism;
the sleeve is connected with one end of the main rod and is used for being sleeved at the tail end of the lumbar vertebra screw; the main rod is provided with an inner cavity, and the other end of the main rod is provided with an opening communicated with the inner cavity; part of the movable rod can be slidably accommodated in the inner cavity, and when the movable rod slides to one end of the main rod, which is far away from the sleeve, the movable rod is rotatably connected with the main rod;
the limiting mechanism is used for limiting the sliding of the movable rod relative to the main rod and limiting the rotation of the movable rod relative to the main rod.
In one embodiment of the invention, the wall of the main rod is provided with two strip-shaped holes communicated with the inner cavity, the two strip-shaped holes are symmetrical relative to the central axis of the main rod and are arranged along the extension direction of the main rod; one end of the movable rod accommodated in the inner cavity is provided with a connecting hole;
the movable mechanism comprises a connecting column, two connecting gears and two racks; the connecting column is matched with the connecting hole, and two ends of the connecting column are respectively matched with the two strip-shaped holes; the two connecting gears are connected with the connecting column and positioned on two sides of the movable rod; two racks all set up along the central axis direction of mobile jib to with the wall connection of inner chamber, two racks are located the both sides of movable rod, and respectively with two connecting gear meshes.
In an embodiment of the invention, the movable mechanism further comprises two sliding blocks, the two sliding blocks are respectively slidably arranged in the two strip-shaped holes, and the two sliding blocks are respectively rotatably connected with two ends of the connecting column;
the two connecting gears are fixedly connected with the connecting column; the limiting mechanism is used for limiting the rotation of the connecting column.
In one embodiment of the invention, both connecting gears are rotatably connected with the connecting column; the limiting mechanism is used for limiting the rotation of the connecting gear.
In one embodiment of the invention, the limiting mechanism comprises a limiting rod and a restoring piece;
the limiting rod is movably connected with the movable rod and extends along the axial direction of the movable rod; the restoring piece is connected with the limiting rod and the movable rod and is used for enabling the limiting rod to have the tendency of moving towards the direction close to the main rod;
one end of the limiting rod close to the main rod is provided with a limiting part for limiting the rotation of the connecting column or the connecting gear;
the gag lever post is used for making spacing portion and spliced pole or connecting gear butt under the effect of replying the piece to the rotation of restriction spliced pole or connecting gear.
In an embodiment of the present invention, the limiting portion is a limiting tooth disposed at one end of the limiting rod close to the main rod.
In an embodiment of the invention, the limiting mechanism further comprises a limiting gear, the limiting gear is fixedly connected with the connecting column and is accommodated in the movable rod; the connecting gear is fixedly connected with the connecting column;
the limiting gear is used for being meshed with the limiting teeth to limit the rotation of the connecting column.
In one embodiment of the present invention, the connecting gear is rotatably connected to the connecting column, and the limit gear is adapted to be engaged with the connecting gear to limit the rotation of the connecting gear.
In one embodiment of the invention, the wall of the inner cavity and the outer wall of the movable rod are respectively provided with a first guide part and a second guide part;
one of the first guide part and the second guide part is a protrusion or a groove, and the other of the first guide part and the second guide part is a groove or a protrusion.
In an embodiment of the present invention, a notch is disposed at an end of the main rod away from the sleeve, and the notch is used for accommodating the movable rod after the movable rod rotates relative to the main rod.
The invention has the beneficial effects that:
the lumbar vertebra turning device comprises a sleeve, a main rod, a movable mechanism and a limiting mechanism; the sleeve is sleeved at the tail end of the lumbar screw, part of the movable rod is contained in the inner cavity in a sliding manner, and when the movable rod slides to one end of the main rod, which is far away from the sleeve, the movable rod is rotatably connected with the main rod; and the limiting mechanism is used for limiting the sliding of the movable rod relative to the main rod and limiting the rotation of the movable rod relative to the main rod. From this, through the adjustment of stop gear to the limiting displacement's of movable rod, can adjust the length that the movable rod stretches into the mobile jib to and make the movable rod rotate for the mobile jib, thereby can be through the length and the angle of use of adjusting this lumbar vertebrae turning round ware, the doctor of being convenient for screws up the lumbar vertebrae screw at the operation in-process.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural view of a lumbar vertebra upender provided in the present application;
fig. 2 is a schematic structural view of the lumbar vertebra upender provided by the present application when rotating;
figure 3 is a cross-sectional view of a first perspective of the lumbar recliner provided herein;
figure 4 is a cross-sectional view of a lumbar recliner provided herein from a second perspective;
figure 5 is a partial cross-sectional view of a first perspective of the lumbar recliner provided herein;
figure 6 is a partial cross-sectional view of a second perspective of the lumbar recliner provided herein;
FIG. 7 is a partial cross-sectional view of a first perspective of the sliding motion of the movable bar as provided herein;
fig. 8 is a partial cross-sectional view of a second perspective when the movable bar provided by the present application is slid.
Icon: 100-lumbar vertebra turning device; 110-a sleeve; 120-main pole; 130-a movable bar; 140-a movable mechanism; 150-a limiting mechanism; 121-lumen; 122-an opening; 123-strip-shaped holes; 131-a connection hole; 141-connecting column; 142-connecting gear; 143-rack; 144-a slider; 151-a stop lever; 152-a recovery member; 153-a limiting part; 154-limit teeth; 155-limit gear.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; may be directly connected or may be indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1 to 8, the present invention provides a lumbar vertebra turning device 100, which comprises a sleeve 110, a main rod 120, a movable rod 130, a movable mechanism 140 and a limiting mechanism 150;
the sleeve 110 is connected with one end of the main rod 120, and the sleeve 110 is used for sleeving the tail end of the lumbar vertebra screw; the main rod 120 is provided with an inner cavity 121, and the other end of the main rod 120 is provided with an opening 122 communicated with the inner cavity 121; part of the movable rod 130 is slidably accommodated in the inner cavity 121, and when the movable rod 130 slides to one end of the main rod 120 departing from the sleeve 110, the movable rod 130 is rotatably connected with the main rod 120;
the limiting mechanism 150 is used to limit the sliding of the movable rod 130 relative to the main rod 120 and the rotation of the movable rod 130 relative to the main rod 120.
It should be noted that the tail end of the lumbar screw is a polyhedron structure or the tail end of the lumbar screw is provided with a tail groove, and the sleeve 110 can be adaptively arranged according to the shape of the tail end of the lumbar screw; if the tail end is polyhedral, the inner circumferential surface of the sleeve 110 is polyhedral; if the tail end of the sleeve is provided with a tail groove, a column body matched with the tail groove is arranged in the sleeve 110. In the process of screwing the lumbar vertebra screw, after the sleeve 110 is matched with the tail end of the lumbar vertebra screw, the sleeve 110 can be driven to rotate by adopting a mode of rotating the main rod 120 or the movable rod 130, so that the lumbar vertebra screw is screwed.
Referring to fig. 1 to 8, the working principle of the lumbar vertebra turning device 100 is as follows:
the lumbar vertebra turning device 100 comprises a sleeve 110, a main rod 120, a movable rod 130, a movable mechanism 140 and a limiting mechanism 150; the sleeve 110 is configured to be sleeved on the tail end of the lumbar screw, and a part of the movable rod 130 is slidably received in the inner cavity 121, and when the movable rod 130 slides to an end of the main rod 120 departing from the sleeve 110, the movable rod 130 is rotatably connected with the main rod 120; and the limiting mechanism 150 serves to limit the sliding of the movable bar 130 with respect to the main bar 120 and to limit the rotation of the movable bar 130 with respect to the main bar 120. Therefore, the length of the movable rod 130 extending into the main rod 120 can be adjusted by adjusting the limiting effect of the limiting mechanism 150 on the movable rod 130, and the movable rod 130 can rotate relative to the main rod 120, so that the lumbar vertebra screw can be conveniently screwed down by a doctor in the operation process by adjusting the length and the use angle of the lumbar vertebra turning device 100.
It should be noted that, when the lumbar screw engaged with the sleeve 110 is driven by rotating the movable rod 130, based on the above structure, the movable rod 130 can be driven to extend into or out of the main rod 120 by controlling the limit structure, so as to adjust the length of the movable rod 130 outside the main rod 120, thereby facilitating the use; moreover, when the movable rod 130 slides to the end of the main rod 120 departing from the sleeve 110, and the movable rod 130 is rotatably connected to the main rod 120, an included angle can be formed between the central axis of the movable rod 130 and the central axis of the main rod 120, and when the movable rod 130 does not slide to the end of the main rod 120 departing from the sleeve 110, the central axis of the movable rod 130 coincides with the central axis of the main rod 120; from this, can be through the mode that makes the central axis of movable rod 130 and the central axis of mobile jib 120 be the contained angle for movable rod 130 sets up for mobile jib 120 slope, and then can avoid other apparatus in the operation process to produce with this lumbar vertebrae turning round 100's rotation operation through such mode and interfere, and can increase pivoted moment, thereby convenient to use.
Further, referring to fig. 1 to 8, in the present embodiment, when the movable mechanism 140 is disposed, the movable mechanism 140 is used to slidably connect the movable rod 130 with the inner cavity 121, and when the movable rod 130 slides to an end of the main rod 120 away from the sleeve 110, the movable rod 130 is rotatably connected with the main rod 120, based on which two strip-shaped holes 123 communicating with the inner cavity 121 are formed in the wall of the main rod 120, and the two strip-shaped holes 123 are symmetrical with respect to a central axis of the main rod 120 and are formed along an extending direction of the main rod 120; one end of the movable rod 130 accommodated in the inner cavity 121 is provided with a connecting hole 131; the movable mechanism 140 includes a connecting column 141, two connecting gears 142 and two racks 143; the connecting column 141 is matched with the connecting hole 131, and two ends of the connecting column 141 are respectively matched with the two strip-shaped holes 123; the two connecting gears 142 are connected with the connecting column 141 and are positioned at two sides of the movable rod 130; the two racks 143 are disposed along the central axis of the main rod 120 and connected to the wall of the inner cavity 121, and the two racks 143 are disposed on both sides of the movable rod 130 and respectively engaged with the two connecting gears 142.
Therefore, when the movable rod 130 does not slide to the end of the main rod 120 away from the sleeve 110, since the connecting gear 142 is meshed with the rack 143 and the connecting gear 142 is connected with the connecting column 141, when the motion limiting effect of the limiting mechanism 150 on the movable rod 130 disappears, the connecting gear 142 can rotate relative to the connecting column 141 or the connecting gear 142 can rotate synchronously with the connecting column 141, so that the connecting gear 142 can move along the rack 143; and the connecting column 141 can slide in the strip-shaped hole 123, and further, by applying external force to the limiting mechanism 150 and the movable rod 130 in such a way, the movable rod 130 is driven to extend into or extend out relative to the inner cavity 121, and the movement of the movable rod 130 relative to the inner cavity 121 is limited by the stroke of the connecting column 141 in the strip-shaped hole 123 and the meshing stroke of the connecting gear 142 and the rack 143.
Based on the arrangement of the movable mechanism 140, when the limiting mechanism 150 is provided, the limiting mechanism 150 can limit the rotation of the connecting gear 142 relative to the connecting column 141 or the synchronous rotation of the connecting column 141 and the connecting gear 142, so as to limit the movement of the movable column relative to the main rod 120.
Therefore, the movable mechanism 140 further comprises two sliding blocks 144, the two sliding blocks 144 are respectively slidably disposed in the two strip-shaped holes 123, and the two sliding blocks 144 are respectively rotatably connected with two ends of the connecting column 141; the two connecting gears 142 are both fixedly connected with the connecting column 141; the limiting mechanism 150 is used for limiting the rotation of the connecting column 141. Or, both the connecting gears 142 are rotatably connected with the connecting column 141; the limiting mechanism 150 is used to limit the rotation of the connecting gear 142.
Further, referring to fig. 1-8, in the present embodiment, the limiting mechanism 150 includes a limiting rod 151 and a restoring member 152; the limiting rod 151 is movably connected with the movable rod 130 and extends along the axial direction of the movable rod 130; the restoring member 152 is connected to the limiting rod 151 and the movable rod 130, and the restoring member 152 is used for making the limiting rod 151 have a tendency of moving towards a direction close to the main rod 120; one end of the limiting rod 151 close to the main rod 120 is provided with a limiting part 153 for limiting the rotation of the connecting column 141 or the connecting gear 142; the limiting rod 151 is used for enabling the limiting part 153 to abut against the connecting column 141 or the connecting gear 142 under the action of the restoring piece 152 so as to limit the rotation of the connecting column 141 or the connecting gear 142. The limiting portion 153 is a limiting tooth 154 disposed at one end of the limiting rod 151 close to the main rod 120. It should be noted that the movable rod 130 is provided with a structure for guiding the movement of the stopper rod 151 along the axial direction of the movable rod 130, and may be a guide hole or a guide table.
The limiting mechanism 150 further comprises a limiting gear 155, the limiting gear 155 is fixedly connected with the connecting column 141 and is accommodated in the movable rod 130; the connecting gear 142 is fixedly connected with the connecting column 141, and the limiting gear 155 is used for being meshed with the limiting teeth 154 to limit the rotation of the connecting column 141. Alternatively, the connection gear 142 is rotatably connected to the connection post 141, and the limit gear 155 is configured to engage with the connection gear 142 to limit the rotation of the connection gear 142.
In order to guide the movement of the movable rod 130 relative to the main rod 120, the wall of the inner cavity 121 and the outer wall of the movable rod 130 are respectively provided with a first guide portion and a second guide portion; one of the first guide part and the second guide part is a protrusion or a groove, and the other of the first guide part and the second guide part is a groove or a protrusion.
To increase the restriction on the rotation of the movable rod 130 relative to the main rod 120, a notch is disposed at an end of the main rod 120 away from the sleeve 110, and the notch is used for accommodating the movable rod 130 after the movable rod 130 rotates relative to the main rod 120.
In summary, referring to fig. 1 to 8, in the present embodiment, in order to adjust the length of the movable rod 130 relative to the main rod 120, the limiting rod 151 is operated to move the limiting rod 151 against the acting force of the restoring member 152, so that the limiting teeth 154 on the limiting rod 151 are disengaged from the connecting gear 142 or the limiting gear 155, and the connecting gear 142 can rotate relative to the rack 143 and move along the extending direction of the rack 143, so as to adjust the length of the movable rod 130;
when the movable rod 130 slides to the end of the main rod 120 departing from the sleeve 110, the connecting column 141 and the sliding block 144 in the strip-shaped hole 123 are rotatably connected, and the rotation of the connecting gear 142 is not limited, so that the axis of the movable rod 130 and the axis of the main rod 120 form an included angle by rotating the movable rod 130, thereby facilitating use.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (6)
1. A lumbar vertebra turning device is characterized in that:
the lumbar vertebra turning device comprises a sleeve, a main rod, a movable mechanism and a limiting mechanism;
the sleeve is connected with one end of the main rod and is used for being sleeved at the tail end of the lumbar vertebra screw; the main rod is provided with an inner cavity, and the other end of the main rod is provided with an opening communicated with the inner cavity; part of the movable rod is slidably accommodated in the inner cavity, and when the movable rod slides to one end of the main rod departing from the sleeve, the movable rod is rotatably connected with the main rod, namely, when the movable rod slides to one end of the main rod departing from the sleeve, the central axis of the movable rod forms an included angle with the central axis of the main rod, and when the movable rod does not slide to one end of the main rod departing from the sleeve, the central axis of the movable rod is superposed with the central axis of the main rod;
the limiting mechanism is used for limiting the sliding of the movable rod relative to the main rod and limiting the rotation of the movable rod relative to the main rod;
the wall of the main rod is provided with two strip-shaped holes communicated with the inner cavity, the two strip-shaped holes are symmetrical relative to the central axis of the main rod and are formed along the extension direction of the main rod; one end of the movable rod accommodated in the inner cavity is provided with a connecting hole;
the movable mechanism comprises a connecting column, two connecting gears and two racks; the connecting column is matched with the connecting hole, and two ends of the connecting column are respectively matched with the two strip-shaped holes; the two connecting gears are connected with the connecting column and are positioned on two sides of the movable rod; the two racks are arranged along the central axis direction of the main rod and connected with the wall of the inner cavity, and are positioned on two sides of the movable rod and respectively meshed with the two connecting gears;
the limiting mechanism comprises a limiting rod and a restoring piece;
the limiting rod is movably connected with the movable rod and extends along the axial direction of the movable rod; the restoring piece is connected with the limiting rod and the movable rod and is used for enabling the limiting rod to have a tendency of moving towards the direction close to the main rod;
one end of the limiting rod, which is close to the main rod, is provided with a limiting part for limiting the connecting column;
the limiting rod is used for enabling the limiting part to be abutted against the connecting column under the action of the restoring piece so as to limit the rotation of the connecting column.
2. The lumbar vertebra upender as set forth in claim 1, wherein:
the movable mechanism further comprises two sliding blocks, the two sliding blocks are respectively slidably arranged in the two strip-shaped holes, and the two sliding blocks are respectively rotatably connected with the two ends of the connecting column;
the two connecting gears are fixedly connected with the connecting column; the limiting mechanism is used for limiting the rotation of the connecting column.
3. The lumbar upender as set forth in claim 1, wherein:
the limiting part is a limiting tooth arranged at one end of the limiting rod close to the main rod.
4. The lumbar vertebra upender as set forth in claim 3, wherein:
the limiting mechanism further comprises a limiting gear, and the limiting gear is fixedly connected with the connecting column and is accommodated in the movable rod; the connecting gear is fixedly connected with the connecting column;
the limiting gear is used for being meshed with the limiting teeth so as to limit the rotation of the connecting column.
5. A lumbar recliner as set forth in any of claims 1-4 wherein:
a first guide part and a second guide part are respectively arranged on the wall of the inner cavity and the outer wall of the movable rod;
one of the first guide part and the second guide part is a protrusion or a groove, and the other of the first guide part and the second guide part is a groove or a protrusion.
6. The lumbar upender as set forth in any one of claims 1-4, characterized in that:
the mobile jib deviates from telescopic one end is provided with the breach, the breach is used for the movable rod for the mobile jib rotates the back, the holding the movable rod.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110568033.6A CN113288398B (en) | 2021-05-25 | 2021-05-25 | Lumbar vertebra turning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110568033.6A CN113288398B (en) | 2021-05-25 | 2021-05-25 | Lumbar vertebra turning device |
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| CN113288398A CN113288398A (en) | 2021-08-24 |
| CN113288398B true CN113288398B (en) | 2022-10-11 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210232820U (en) * | 2019-07-16 | 2020-04-03 | 广东省中山食品进出口有限公司 | Adjustable external hexagonal wrench |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201863149U (en) * | 2011-02-25 | 2011-06-15 | 沈阳东管电力管道工程有限公司 | Retractable ring wrench |
| US20170072543A1 (en) * | 2015-09-11 | 2017-03-16 | Randy Taylor | Ratchet Wrench Extension |
| KR101688053B1 (en) * | 2015-11-13 | 2016-12-22 | 박건국 | Hinged handle for socket wrench |
| CN106112884B (en) * | 2016-08-18 | 2017-08-01 | 海盐星辰工具有限公司 | A kind of folding spanner of angle adjustable |
| CN106272211B (en) * | 2016-09-22 | 2018-10-09 | 浙江嘉科电子有限公司 | A kind of intelligent spanner |
| CN206200845U (en) * | 2016-12-02 | 2017-05-31 | 重庆市江津区前进焊接材料厂 | A kind of adjustable electric screw driver of cutter head angle |
| CN109965970A (en) * | 2017-12-27 | 2019-07-05 | 慈溪市人民医院 | Device for fetching nail and its application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN210232820U (en) * | 2019-07-16 | 2020-04-03 | 广东省中山食品进出口有限公司 | Adjustable external hexagonal wrench |
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