CN112451078B - Annular rod bending device and using method thereof - Google Patents
Annular rod bending device and using method thereof Download PDFInfo
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- CN112451078B CN112451078B CN202011354755.3A CN202011354755A CN112451078B CN 112451078 B CN112451078 B CN 112451078B CN 202011354755 A CN202011354755 A CN 202011354755A CN 112451078 B CN112451078 B CN 112451078B
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- 238000005452 bending Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 230000008569 process Effects 0.000 abstract description 17
- 241001079814 Symphyotrichum pilosum Species 0.000 abstract description 3
- 235000004224 Typha angustifolia Nutrition 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 208000020307 Spinal disease Diseases 0.000 description 1
- 208000020339 Spinal injury Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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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
- A61B17/8863—Apparatus for shaping or cutting osteosynthesis equipment by medical personnel
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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
- A61B2017/564—Methods for bone or joint treatment
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
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Abstract
The invention relates to the technical field of medical instruments, in particular to an annular rod bender. The annular rod bending device comprises a fixing mechanism and a rod bending mechanism hinged with the fixing mechanism, wherein the fixing mechanism comprises a first connecting block, and a rod body through hole, a guide block and a first handle are arranged on the first connecting block; the curved stick mechanism includes the second connecting block, the lower extreme of second connecting block articulates there is the gyro wheel, the lower terminal surface of second connecting block is provided with first otic placode and second otic placode, second connecting block right-hand member is connected with the connector, install the second handle that can promote in the connector, the slot has been seted up to the left end of second handle, the up end of second connecting block is provided with the inserted bar, the diameter of inserted bar cooperatees with the diameter of slot, fixed establishment's guide block is located between first otic placode and the second otic placode and articulated with first otic placode and second otic placode. The invention can rapidly bend the connecting rod used in the spinal nail rod internal fixing system into a U shape, and the two arms can not be staggered in the bending process, thus the operation comfort is strong.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an annular rod bender and a using method thereof.
Background
The spinal nail rod internal fixation system is widely applied to the reduction and fixation of spinal bones in the aspect of treating spinal injuries and diseases. Typically, a fastener such as a pedicle screw is implanted and fixed to the vertebral body, and is connected to the vertebral body via a connecting rod to serve as a support. Because everybody's skeleton all is inequality, its injury back camber all is different, before adopting the connective bar to fix, all need carry out the regulation of certain angle to the connective bar to be fit for the demand at different human different positions, the curved excellent ware will be used this moment. The main function of the rod bender is to bend the connecting rod into a certain shape to meet the fixation requirements in the operation.
In the rod bending process, sometimes the connecting rod needs to be bent into a U-shaped shape, the existing rod bending device can only bend out a shape with a radian, the function is single, the existing rod bending device is very inconvenient to use in the process of bending the connecting rod into the U-shaped shape, the phenomenon of staggering both hands easily occurs, and the operation is uncomfortable.
Disclosure of Invention
The invention aims to provide an annular rod bending device and a using method thereof, which overcome the defects of the prior art, can conveniently and rapidly bend a connecting rod used in a spinal nail rod internal fixing system into a U shape, can not generate staggered double arms in the bending process, and has strong operation comfort.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides an annular stick bending device, includes fixed establishment and with fixed establishment articulated stick bending machine, wherein:
the fixing mechanism comprises a first connecting block, a rod body through hole is formed in the upper end of the first connecting block in the left-right direction, a guide block corresponding to the position of the rod body through hole is arranged on the right end face of the first connecting block, the upper end face and the lower end face of the guide block are horizontal, the right end face is an arc face, a first handle is arranged at the lower end of the guide block, the rod body through hole in the fixing mechanism is mainly used for penetrating into a rod body and forming a circumferential limiting support for the rod body, and the guide block is mainly used for forming a guiding effect on the rod body in the bending process of the rod body;
the bending rod mechanism comprises a second connecting block, a first groove is arranged on the lower end face of the second connecting block along the left-right direction, the left end of the first groove is communicated with the left end face of the second connecting block, the rear end of the first groove is communicated with the right end face of the second connecting block, a roller is hinged in the first groove, a first lug plate and a second lug plate are arranged on the lower end face of the second connecting block, second grooves are arranged on the upper right corner of the front end face and the upper right corner of the rear end face of the second connecting block, connectors are hinged on the front and rear second grooves, each connector comprises a connecting main body and a third lug plate arranged at the left end of the connecting main body, each third lug plate is hinged in a second groove corresponding to the position of the third lug plate, each connector can rotate 90 degrees in the second groove after being hinged, a left-right through hole is arranged on the connecting main body, a limiting rod is arranged in each through hole, a second handle is arranged in each through hole, a limiting rod sliding groove is formed in the rod wall of the second handle, the limiting rod is located in the limiting rod sliding groove, a slot is formed in the left end of the second handle, an inserting rod is arranged on the upper end face of the second connecting block, the diameter of the inserting rod is matched with that of the slot, the lower end face of a third lug plate of the connecting head is abutted against the lower end face of the second groove in the initial state, force is applied in the process of pressing the second handle downwards, and therefore the second connecting block is driven to move;
the guide block of the fixing mechanism is located between the first lug plate and the second lug plate and is hinged to the first lug plate and the second lug plate, a rod body clamping cavity is formed between the upper end face of the guide block and the lower end face of the roller, the rod body penetrates through the rod body through hole and the rod body clamping cavity, the second handle is pressed down clockwise at the moment, the second connecting block can be driven to move clockwise along the hinged end of the second connecting block and the guide block, the rod body is further bent 90 degrees clockwise, the second handle is lifted anticlockwise, the connecting head rotates along with the rod body, the inserting groove is aligned with the inserting rod after the rod body rotates 90 degrees, the second handle is pushed to enable the inserting rod to be inserted into the inserting groove, then the second handle rotates 90 degrees clockwise, the rod body can be bent into a U shape, the whole process is rapid in operation, the arms cannot intersect, and the operation comfort level is high.
Furthermore, the upper end face and the lower end face of the first connecting block and the upper end face, the right side face and the lower end face of the guide block are provided with guide grooves matched with the diameter of the rod body, and the rod body is bent along the guide grooves in the bending process to prevent dislocation.
Further, the gag lever post symmetry at least is provided with two, and the quantity and the position of gag lever post spout are corresponding with the quantity and the position of gag lever post, and when the gag lever post was located gag lever post spout left end, the second was lifted to the in-process that the slot corresponds with the inserted bar unimpededly, and when the gag lever post was located the gag lever post spout right-hand member, the slot was pegged graft with the inserted bar, sets up two at least gag lever posts and is favorable to ensureing that the second handle steadily released and withdraws.
Further, still be provided with the bracing piece on the lateral wall of connector, the terminal embedded ball that has of bracing piece for the second handle is released and is withdrawed the process of connector through-hole more smoothly, and the body of rod that is located in the through-hole of ball and second handle contacts.
Furthermore, the first handle is arranged at the front end of the lower end face of the first connecting block, and the guide block is arranged at the rear end of the right end face of the first connecting block, so that no movement obstruction is generated between the first handle and the guide block.
Furthermore, the number of the rollers is two, a limiting fulcrum for bending the bar body is formed between the roller on the left side and the guide block, and the roller on the right side is a main force application point in the bar body bending process.
The use method of the annular rod bender comprises the following steps:
(1) the bar body passes through the bar body through hole and the bar body clamping cavity, the lower end of the part of the bar body to be bent is contacted with the guide groove on the guide block, and the upper end of the part to be bent is contacted with the roller on the left side;
(2) the first handle is held by the left hand, the second handle is held by the right hand, and the second handle is pressed downwards clockwise, so that the second connecting block rotates 90 degrees clockwise along the hinged end of the guide block, and the rod body is bent 90 degrees;
(3) the second handle is lifted anticlockwise, the second handle drives the connector to rotate 90 degrees anticlockwise, the inserting rod is aligned to the inserting groove on the second handle at the moment, the second handle is pushed, the inserting groove of the second handle is connected with the inserting rod in an inserting mode, the second handle is pressed downwards clockwise, the rod body continues to be bent for 90 degrees and finally forms a U-shaped structure, and the bent rod body is pulled out from the right side.
The invention has the beneficial effects that: compared with the prior art, the annular rod bender and the using method thereof have the following advantages: the barred body passes from the barred body perforation and barred body centre gripping chamber, push down the second handle clockwise this moment, can drive the second connecting block along its articulated end clockwise movement with the guide block, and then make the barred body buckle 90 clockwise, then lift the second handle anticlockwise, the connector is rotatory along with it, rotatory 90 back slots and inserted bar aim at, promote the second handle and make the inserted bar insert in the slot, then clockwise rotation second handle 90, can make the barred body buckle for "U" type, whole process not only operates rapidly, and the arm can not produce alternately, operation comfort.
Drawings
FIG. 1 is a schematic view of the general structure of the present invention in a state of penetrating into a rod body;
FIG. 2 is a schematic structural view of the fixing mechanism of the present invention;
FIG. 3 is a schematic structural view of the rod bending mechanism of the present invention;
FIG. 4 is a schematic view of another angle structure of the rod bending mechanism of the present invention;
FIG. 5 is a schematic structural diagram of a connector according to the present invention;
FIG. 6 is a schematic view of a second handle according to the present invention;
FIG. 7 is a schematic view of the present invention showing the bar bent 90 degrees;
FIG. 8 is a schematic structural view of the present invention when bending the bar into a "U" shape;
the connecting structure comprises a fixing mechanism 1, a first connecting block 101, a rod body penetrating hole 102, a guide block 103, a first handle 104, a guide groove 105, a rod bending mechanism 2, a second connecting block 201, a first groove 202, a roller 203, a first lug plate 204, a second lug plate 205, a second groove 206, a connecting head 207, a connecting body 2071, a third lug plate 2017, a 2073 through hole, a 2074 limiting rod, a second handle 208, a limiting rod sliding groove 209, a slot 210, an inserting rod 211, a supporting rod 212 and a ball 213.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
In the embodiment shown in fig. 1 to 8, an annular rod bender comprises a fixing mechanism 1 and a rod bending mechanism 2 hinged with the fixing mechanism 1, wherein:
the fixing mechanism 1 comprises a first connecting block 101, a rod body through hole 102 is formed in the upper end of the first connecting block 101 in the left-right direction, a guide block 103 corresponding to the rod body through hole 102 is arranged on the right end face of the first connecting block 101, the upper end face and the lower end face of the guide block 103 are horizontal, the right end face is an arc-shaped face, a first handle 104 is arranged at the lower end of the guide block 103, the rod body through hole 102 in the fixing mechanism 1 is mainly used for penetrating a rod body and forming circumferential limiting support for the rod body, and the guide block 103 is mainly used for forming a guiding effect on the rod body in the bending process of the rod body;
the rod bending mechanism 2 comprises a second connecting block 201, a first groove 202 is arranged on the lower end face of the second connecting block 201 in the left-right direction, the left end of the first groove 202 is communicated with the left end face of the second connecting block 201, the rear end of the first groove 202 is communicated with the right end face of the second connecting block 201, a roller 203 is hinged in the first groove 202, a first lug plate 204 and a second lug plate 205 are arranged on the lower end face of the second connecting block 201, second grooves 206 are arranged on the right upper corner of the front end face and the right upper corner of the rear end face of the second connecting block 201, connectors 207 are hinged on the front and rear second grooves 206, each connector 207 comprises a connecting main body 2071 and a third lug plate 2017 arranged at the left end of the connecting main body 2071, the third lug plate 2017 is hinged in a second groove 206 corresponding to the position of the third lug plate, the hinged connector 207 can rotate by 90 degrees in the second groove 206, and a through hole 2073 which runs through from left to right is arranged on the connecting main body 2071, a limiting rod 2074 is arranged in the through hole 2073, a second handle 208 is arranged in the through hole 2073, a limiting rod sliding groove 209 is arranged on the rod wall of the second handle 208, the limiting rod 2074 is located in the limiting rod sliding groove 209, a slot 210 is arranged at the left end of the second handle 208, an insert rod 211 is arranged on the upper end surface of the second connecting block 201, the diameter of the insert rod 211 is matched with that of the slot 210, the lower end surface of a third lug 2017 of the connecting head 207 is abutted against the lower end surface of the second groove 206 in an initial state, so that a force is applied in the process of pressing down the second handle 208, the second connecting block 201 is driven to move, when the second handle 208 is rotated anticlockwise, the connecting head 207 rotates along with the second handle, the slot 210 is aligned with the insert rod 211 after rotating for 90 degrees, the insert rod 211 can be inserted into the slot 210 and pressed down by pushing the second handle 208, and the second connecting block 201 can be driven to move when the second handle 208 moves;
the guide block 103 of the fixing mechanism 1 is located between the first ear plate 204 and the second ear plate 205 and is hinged to the first ear plate 204 and the second ear plate 205, a rod clamping cavity is formed between the upper end face of the guide block 103 and the lower end face of the roller 203, a rod passes through the rod through hole 102 and the rod clamping cavity, at this time, the second handle 208 is pressed clockwise, the second connecting block 201 can be driven to move clockwise along the hinged end of the guide block 103, the rod is further bent clockwise by 90 degrees, then the second handle 208 is lifted anticlockwise, the connecting head 207 rotates along with the second handle, the inserting groove 210 is aligned with the inserting rod 211 after the rod rotates by 90 degrees, the second handle 208 is pushed to enable the inserting rod 211 to be inserted into the inserting groove 210, then the second handle is rotated clockwise by 90 degrees, the rod can be bent into a U shape, the whole process is rapid in operation, no cross of arms occurs, and the operation comfort level is high.
In this embodiment, the upper end surface and the lower end surface of the first connecting block 101 and the upper end surface, the right side surface and the lower end surface of the guide block 103 are provided with guide grooves 105 matched with the diameter of the rod, and the rod is bent along the guide grooves 105 in the bending process to prevent dislocation.
In this embodiment, the gag lever post 2074 is provided with two at least symmetries, the quantity and the position of gag lever post spout 209 are corresponding with gag lever post 2074's quantity and position, when gag lever post 2074 is located gag lever post spout 209 left end, second handle 208 lifts to the in-process that slot 210 and inserted bar 211 correspond unimpededly, when gag lever post 2074 is located gag lever post spout 209 right end, slot 210 is pegged graft with inserted bar 211, set up two at least gag lever posts 2074 and be favorable to guaranteeing that second handle 208 steadily pushes out and withdraws.
In this embodiment, a support rod 212 is further disposed on the sidewall of the connector 207, a ball 213 is embedded in the end of the support rod 212, and the ball 213 contacts with the rod body of the second handle 208 located in the through hole 2073, so that the process of pushing out the connector through hole 2073 by the second handle 208 is smoother.
In this embodiment, the first handle 104 is disposed at the front end of the lower end surface of the first connecting block 101, and the guide block 103 is disposed at the rear end of the right end surface of the first connecting block 101, so as to ensure that no movement obstruction is generated between the first handle 104 and the guide block 103.
In this embodiment, two rollers 203 are provided, a limiting fulcrum for bending the bar body is formed between the left roller 203 and the guide block 103, and the right roller 203 is a main force application point in the bar body bending process.
The use method of the annular rod bender comprises the following steps:
(1) the bar body passes through the bar body through hole 102 and the bar body clamping cavity, the lower end of the part of the bar body to be bent is contacted with the guide groove 105 on the guide block 103, and the upper end of the part to be bent is contacted with the roller 203 on the left side;
(2) the first handle 104 is held by the left hand, the second handle 208 is held by the right hand, and the second handle 208 is pressed downwards clockwise, so that the second connecting block 201 rotates clockwise by 90 degrees along the hinged end with the guide block 103, and the rod body is bent by 90 degrees;
(3) the second handle 208 is lifted up counterclockwise, the second handle 208 drives the connecting head 207 to rotate 90 degrees counterclockwise, at this time, the slot 210 on the second handle 208 aligns with the insertion rod 211, the second handle 208 is pushed, the slot 210 of the second handle 208 is inserted into the insertion rod 211, the second handle 208 is pressed down clockwise, the rod body is bent by 90 degrees continuously, a U-shaped structure is finally formed, and the bent rod body is pulled out from the right side.
The above embodiments are only specific examples of the present invention, and the protection scope of the present invention includes but is not limited to the product forms and styles of the above embodiments, and any suitable changes or modifications made by those skilled in the art according to the claims of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. An annular rod bending device is characterized in that: including fixed establishment and with fixed establishment articulated curved stick mechanism, wherein:
the fixing mechanism comprises a first connecting block, a rod body through hole is formed in the upper end of the first connecting block in the left-right direction, a guide block corresponding to the rod body through hole is arranged on the right end face of the first connecting block, the right end face of the guide block is an arc-shaped face, and a first handle is arranged at the lower end of the guide block;
the bending rod mechanism comprises a second connecting block, a first groove is arranged on the lower end face of the second connecting block along the left-right direction, the left end of the first groove is communicated with the left end face of the second connecting block, the rear end of the first groove is communicated with the right end face of the second connecting block, a roller is hinged in the first groove, a first lug plate and a second lug plate are arranged on the lower end face of the second connecting block, second grooves are arranged on the upper right corner of the front end face and the upper right corner of the rear end face of the second connecting block, connectors are hinged on the front and rear second grooves, each connector comprises a connecting main body and a third lug plate arranged at the left end of the connecting main body, each third lug plate is hinged in a second groove corresponding to the position of the third lug plate, each connector can rotate 90 degrees in the second groove after being hinged, a left-right through hole is arranged on the connecting main body, a limiting rod is arranged in each through hole, a second handle is arranged in each through hole, a limiting rod sliding groove is formed in the rod wall of the second handle, the limiting rod is located in the limiting rod sliding groove, a slot is formed in the left end of the second handle, an inserting rod is arranged on the upper end face of the second connecting block, and the diameter of the inserting rod is matched with that of the slot;
the guide block of the fixing mechanism is positioned between the first lug plate and the second lug plate and is hinged with the first lug plate and the second lug plate, a rod body clamping cavity is formed between the upper end face of the guide block and the lower end face of the roller, and the rod body penetrates through the rod body through hole and the rod body clamping cavity.
2. The annular rod bender according to claim 1, wherein: and guide grooves matched with the diameter of the rod body are formed in the upper end surface and the lower end surface of the first connecting block and the upper end surface, the right side surface and the lower end surface of the guide block.
3. The annular rod bender according to claim 1, wherein: the limiting rod is at least symmetrically provided with two limiting rods, and the number and the positions of the limiting rod sliding grooves correspond to those of the limiting rods.
4. The annular rod bender according to claim 1, wherein: still be provided with the bracing piece on the lateral wall of connector, the terminal embedded ball that has of bracing piece, the body of rod that is located the through-hole of ball and second handle contacts.
5. The annular rod bender according to claim 1, wherein: the first handle is arranged at the front end of the lower end face of the first connecting block.
6. The annular rod bender according to claim 5, wherein: the guide block is arranged at the rear end of the right end face of the first connecting block.
7. The annular rod bender according to claim 1, wherein: the gyro wheel is provided with two.
8. Use of a ring bender according to any of claims 1-7, characterized in that: the method comprises the following steps:
(1) the rod body penetrates through the rod body through hole and the rod body clamping cavity, the lower end of the part to be bent is contacted with the guide groove on the guide block, and the upper end of the part to be bent is contacted with the roller;
(2) the first handle is held by the left hand, the second handle is held by the right hand, and the second handle is pressed downwards, so that the second connecting block rotates downwards by 90 degrees along the hinged end of the second connecting block and the guide block, and the rod body is bent by 90 degrees;
(3) the second handle is lifted anticlockwise, the second handle drives the connector to rotate 90 degrees anticlockwise, the inserting rod is aligned to the inserting groove on the second handle at the moment, the second handle is pushed, the inserting groove of the second handle is connected with the inserting rod in an inserting mode, the second handle is pressed downwards clockwise, the rod body continues to be bent for 90 degrees and finally forms a U-shaped structure, and the bent rod body is pulled out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011354755.3A CN112451078B (en) | 2020-11-27 | 2020-11-27 | Annular rod bending device and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011354755.3A CN112451078B (en) | 2020-11-27 | 2020-11-27 | Annular rod bending device and using method thereof |
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| CN112451078A CN112451078A (en) | 2021-03-09 |
| CN112451078B true CN112451078B (en) | 2021-09-07 |
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| US9421596B2 (en) * | 2014-04-16 | 2016-08-23 | University of Alaska Anchorage | Bending instrument and methods of using same |
| US10327828B2 (en) * | 2015-08-12 | 2019-06-25 | Pacific Instruments, Inc. | Multiple fulcrum bender |
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| Publication number | Publication date |
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| CN112451078A (en) | 2021-03-09 |
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