CN108904024A - A kind of self-stopping type pressurization bolt component - Google Patents
A kind of self-stopping type pressurization bolt component Download PDFInfo
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- CN108904024A CN108904024A CN201810879668.6A CN201810879668A CN108904024A CN 108904024 A CN108904024 A CN 108904024A CN 201810879668 A CN201810879668 A CN 201810879668A CN 108904024 A CN108904024 A CN 108904024A
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- screw
- pressurization
- screw rod
- nut
- hole
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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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/683—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
-
- 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
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- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
A kind of self-stopping type pressurization bolt component, belongs to orthopedic medical device technical field, carries out loaded reset from outside when being used for fracture of tibial plateau.Its technical solution is：The diameter at the screw rod rear portion of pressurization bolt is less than the diameter of screw rod front, the enlarged diameter section of screw rod and the engaging portion of reduced diameter section are inclined loop connecting section, the screw rod rear portion body of rod has inner hole, the inner hole of pressurization nut is not isometrical screw hole, the screw thread of the screw rod enlarged diameter section of the screw thread and pressurization bolt of pressurization nut front major diameter screw hole matches, the screw thread of the screw rod reduced diameter section of the screw thread and pressurization bolt of pressurization nut rear portion small-diameter screw-hole matches, and pressurization nut front major diameter screw hole is vertical planar annular with the junction of rear portion small-diameter screw-hole.The configuration of the present invention is simple, easy to operate, effect is reliable, eliminate because pressurization bolt end leave it is too long caused by local soft tissue stimulation there is situations such as pain, limitation of activity, avoid the generation of various complication, reached satisfied reset effect.
Description
Technical field
The present invention relates to it is a kind of treat fracture of tibial plateau when from the external device for carrying out loaded reset, belong to orthopaedic medical treatment
Equipment technology field.
Background technique
The advantage of fracture of tibial plateau Minimally Invasive Surgery is can to reduce operation wound, is effectively reduced in art, postoperative complications
Incidence, successful key are to realize fracture closed reduction.The Radiologic imaging of fracture of tibial plateau is often tibial plateau
Even there is metaphysis crushing in fissure fracture, companion's articular step-off, serious person.Operating difficulty is big, and operation skill requires height, because
This, treatment for tibial plateau fracture is always the difficult point of orthopaedic trauma.Currently, the minimally invasive resetting technique of fracture of tibial plateau is mainly
For collapsing the jack-up of the sclerite of displacement, including the minimally invasive jack-up resetting technique of arthroscope auxiliary and the minimally invasive reset skill of expanding plasty
Art etc., but usually there is tibial plateau and broadens in tibial plateau, and will appear the line of force if being unable to parking position accuracy not just, and image is treated
Effect.Current relatively effective method is to be pressurizeed using bolt, but deposit that tip of screw after the pressurizing is too long, and stimulation skin occurs
The problems such as local soft tissue pain.This problem is not satisfactorily resolved so far, it is therefore necessary to take create it is new
Instrument and bolt are fixed.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of self-stopping type pressurization bolt component, this pressurization bolt component
Can fracture after pressurization bolt is tightened in place from pressurized portion, avoid pressurization bolt end from leaving too long, eliminate due to
Bolt end leave it is too long caused by local soft tissue stimulation there is the problems such as pain, limitation of activity.
Solve above-mentioned technical problem technical solution be：
A kind of self-stopping type pressurization bolt component, it includes pressurization bolt, pressurization nut, and the screw rod of pressurization bolt is not isometrical spiral shell
Bar, the diameter at screw rod rear portion are less than the diameter of screw rod front, and the enlarged diameter section of screw rod and the engaging portion of reduced diameter section are inclined
Loop connecting section, the reduced diameter section of screw rod, loop connecting section have screw thread, screw rod close to the enlarged diameter section of loop connecting section respectively
The rear portion body of rod has inner hole, and inner hole extends to more than the enlarged diameter section of screw rod and the ring-type of reduced diameter section engaging portion from screw end face
Linkage section reaches the inside of enlarged diameter section, and the wall thickness between loop connecting section and inner hole is less than between screw rod rear portion and inner hole
Wall thickness, the inner hole for the nut that pressurizes are not isometrical screw hole, and pressurize the screw thread of nut front major diameter screw hole and the screw rod of pressurization bolt
The screw thread of enlarged diameter section matches, the spiral shell of the pressurize screw thread of nut rear portion small-diameter screw-hole and the screw rod reduced diameter section of pressurization bolt
Line matches, and the junction of pressurization nut front major diameter screw hole and rear portion small-diameter screw-hole is perpendicular to pressurization nut central axis
The planar annular of line.
Above-mentioned self-stopping type pressurization bolt component, the pressurization nut front end face are located at outside the tibial plateau at pressurization bolt rear portion
At portion's pressurization, the loop connecting of the major diameter screw hole for the nut that pressurizes and the planar annular of small-diameter screw-hole junction and pressurization bolt
The rear end of section is opposite.
Above-mentioned self-stopping type pressurization bolt component, it also twists off screwdriver, twists off screwdriver and is made of handle, cone bar, conehead, hand
Handle is sequentially connected with cone bar, conehead, and there is inner hole in the front end of conehead, and inner hole is hexagon, the hexagon of inner hole and the nut that pressurizes
Peripheral shape matches.
The beneficial effects of the invention are as follows：
The present invention has minor diameter screw rod outside inner hole, the nut that pressurizes is to tibial plateau in the rear design inner hole of pressurization bolt
The screw rod of pressurization bolt can be automatically cut off from the not isometrical junction of pressurization bolt while pressurization, reaching prevents from pressurizeing
Bolt end leaves too long purpose.
The present invention is the pioneering of fracture of tibial plateau pressurization, solves pressurization bolt common after pressurizeing using pressurization bolt
Too long problem is left in end, eliminate due to bolt end leave it is too long caused by local soft tissue stimulation occur pain,
Situations such as limitation of activity, is conducive to the rehabilitation of patient.The configuration of the present invention is simple, easy to operate, effect is reliable, can keep pressurizeing
The pressurized state of bolt avoids the generation of various complication, and fracture of tibia is made to reach satisfied reset effect, exists for minimal invasive techniques
Development in treatment for tibial plateau fracture provides technical support, in industry there is good popularization and use and invention conversion valence
Value.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the assembled state schematic diagram of Fig. 1；
Fig. 3 is use state diagram of the invention.
It is marked in figure as follows：Pressurization bolt 1, pressurization nut 2, enlarged diameter section 3, reduced diameter section 4, loop connecting section 5, inner hole
6, major diameter screw hole 7, small-diameter screw-hole 8, planar annular 9, twist off screwdriver 10, handle 11, cone bar 12, conehead 13, shin bone 14.
Specific embodiment
Self-stopping type pressurization bolt component of the invention by pressurization bolt 1, pressurization nut 2, twist off screwdriver 10 and form.
Fig. 1,2 displays, the screw rod of pressurization bolt 1 are not isometrical screw rod, and the diameter at screw rod rear portion is less than the straight of screw rod front
Diameter, the enlarged diameter section 3 of screw rod and the engaging portion of reduced diameter section 4 are inclined loop connecting section 5, the reduced diameter section 4 of screw rod, ring-type
Linkage section 5 and the enlarged diameter section 3 of close loop connecting section 5 have screw thread respectively, and for pressurizeing, nut 2 is screwed in.
Fig. 1,2 displays, the screw rod rear portion body of rod of pressurization bolt 1 have inner hole 6, and inner hole 6 is extended to more than from screw end face
The enlarged diameter section 3 of screw rod and the loop connecting section 5 of 4 engaging portion of reduced diameter section, reach the inside of enlarged diameter section 3, loop connecting section 5
Wall thickness between inner hole 6 is less than the wall thickness between screw rod rear portion and inner hole 6, will disconnect when by larger pressure.Pressurization bolt 1
Rear portion using the purpose of 6 structure of inner hole be that pressurization bolt 1 fractures from rear portion, 6 one side of inner hole greatly reduces screw rod
Intensity reduces the difficulty to fracture, and another aspect inner hole 6 is inclined annular wall in the hole wall of loop connecting section 5, and wall thickness is very
It is thin, pressurization cutting can be carried out by pressurization nut 2.
Fig. 1,2 displays, the inner hole of pressurization nut 2 are that isometrical screw hole pressurization 2 front of nut is not major diameter screw hole 7, rear portion
For small-diameter screw-hole 8, the screw thread of the pressurize screw thread of 2 front major diameter screw hole 7 of nut and the screw rod enlarged diameter section 3 of pressurization bolt 1
Match, the screw thread of the screw thread and the screw rod reduced diameter section 4 of pressurization bolt 1 of the 2 rear portion small-diameter screw-hole 8 of nut that pressurizes matches.
When pressurization nut 2 is connect with pressurization bolt 1, the enlarged diameter section 3 of pressurization bolt 1 is screwed into the major diameter screw hole 7 of pressurization nut 2
In, the reduced diameter section 4 of pressurization bolt 1 is screwed into the small-diameter screw-hole 8 of pressurization nut 2.
The junction of Fig. 1,2 displays, pressurization 2 front major diameter screw hole 7 of nut and rear portion small-diameter screw-hole 8 is perpendicular to adding
Press the planar annular 9 of 2 central axis of nut.The effect of planar annular 9 is, when the nut 2 that pressurizes is screwed into pressurization bolt 1, when adding
When the planar annular 9 of nut 2 being pressed to reach the loop connecting section 5 of pressurization bolt 1, planar annular 9 is moved forward, to loop connecting section
5 pressurizations, will cut off the annular wall of loop connecting section 5 when pressure is sufficiently large, achieve the purpose that cut off pressurization bolt 1.
Fig. 1 shows that it also twists off screwdriver 10, twists off screwdriver 10 and is made of handle 11, cone bar 12, conehead 13, handle 11
It is sequentially connected with cone bar 12, conehead 13, there is inner hole in the front end of conehead 13, and inner hole is hexagon, the hexagon and pressurization spiral shell of inner hole
The peripheral shape of cap 2 matches.
Fig. 2,3 displays, in order to which when the nut 2 that pressurizes reaches the bone wall of shin bone 14, pressurization nut 2 can be in time by the spiral shell that pressurizes
Bolt 1 is cut off, and needs to measure before surgery, sets the length of pressurization bolt 1 and the thickness of pressurization nut 2, so that pressurization spiral shell
When 2 front end face of cap is located at the tibial plateau external pressurized at 1 rear portion of pressurization bolt, the major diameter screw hole 7 for the nut 2 that pressurizes and small straight
The rear end of the loop connecting section 5 of the planar annular 9 and pressurization bolt 1 of 8 junction of diameter screw hole is just opposite.Therefore of the invention plus
Pressure bolt 1 and pressurization nut 2 should be multiple groups, and the length of multiple groups pressurization bolt 1 and the thickness of nut 2 that pressurizes are different, can be for
It is selected in operation according to patient profiles.
Fig. 3 shows, it is of the invention use process is as follows：
Firstly, suitable one group of pressurization bolt 1 and pressurization nut 2 are selected according to the damage of patient's shin bone 14 and reset case, to damage
The shin bone 14 of wound is resetted, and pressurization bolt 1 is screwed into from the side of shin bone 14, and bone block after reset is connected as one；
Then, it is screwed into pressurization nut 2 in the end that pressurization bolt 1 is pierced by shin bone 14,7 sets of the major diameter screw hole for the nut 2 that pressurizes exists
On the enlarged diameter section 3 of pressurization bolt 1,8 sets of the small-diameter screw-hole reduced diameter sections 4 in pressurization bolt 1 of the nut 2 that pressurizes.It twists off and changes
The 13 front end inner hole of conehead of cone 10 and the periphery of pressurization nut 2 cooperate, forward rotation pressurization nut 2.
When the front end face and 14 bone wall of shin bone of nut 2 to be pressurised are adjacent to, the planar annular 9 for the nut 2 that at this moment pressurizes, which reaches, to be added
The loop connecting section 5 for pressing bolt 1, continues to rotate and twists off screwdriver 10, and the planar annular 9 of pressurization nut 2 continues to move along, to ring
Shape linkage section 5 pressurizes.The annular wall of loop connecting section 5 is cut off.
After the loop connecting section 5 for cutting off pressurization bolt 1, the reduced diameter section 4 of the pressurization bolt 1 to fracture is taken out, is continued to rotate
Pressurize nut 2, so that pressurization nut 2 is reached suitable pressurized state to 14 side wall of shin bone, realizes satisfied reset effect.
One embodiment of the present of invention is as follows：
The length of the enlarged diameter section 3 of pressurization bolt 1 is 55-120mm, diameter 7mm；The length of reduced diameter section 4 is 50mm, diameter
For 4 mm；The length of loop connecting section 5 is 2.5mm, wall thickness 0.5mm.
The outer diameter of pressurization nut 2 is 10mm, and the diameter of major diameter screw hole 7 is 7mm, length 3mm；Small-diameter screw-hole 8
Diameter is 4mm, length 2.5mm.
Claims (3)
1. a kind of self-stopping type pressurization bolt component, it is characterised in that：It includes pressurization bolt（1）, pressurization nut（2）, pressurize spiral shell
Bolt（1）Screw rod be not isometrical screw rod, the diameter at screw rod rear portion is less than the diameter of screw rod front, the enlarged diameter section of screw rod（3）With
Reduced diameter section（4）Engaging portion be inclined loop connecting section（5）, the reduced diameter section of screw rod（4）, loop connecting section（5）, it is close
Loop connecting section（5）Enlarged diameter section（3）There is screw thread respectively, the screw rod rear portion body of rod has inner hole（6）, inner hole（6）From screw end
Face extends to more than the enlarged diameter section of screw rod（3）With reduced diameter section（4）The loop connecting section of engaging portion（5）, reach enlarged diameter section
（3）Inside, loop connecting section（5）With inner hole（6）Between wall thickness be less than screw rod rear portion and inner hole（6）Between wall thickness, add
Press nut（2）Inner hole be not isometrical screw hole, pressurize nut（2）Front major diameter screw hole（7）Screw thread and pressurization bolt（1）'s
Screw rod enlarged diameter section（3）Screw thread match, pressurize nut（2）Rear portion small-diameter screw-hole（8）Screw thread and pressurization bolt（1）'s
Screw rod reduced diameter section（4）Screw thread match, pressurize nut（2）Front major diameter screw hole（7）With rear portion small-diameter screw-hole（8）'s
Junction is perpendicular to pressurization nut（2）The planar annular of central axis（9）.
2. self-stopping type pressurization bolt component according to claim 1, it is characterised in that：The pressurization nut（2）Front end face
Positioned at pressurization bolt（1）At the tibial plateau external pressurized at rear portion, pressurize nut（2）Major diameter screw hole（7）With minor diameter spiral shell
Hole（8）The planar annular of junction（9）With pressurization bolt（1）Loop connecting section（5）Rear end it is opposite.
3. self-stopping type pressurization bolt component according to claim 1, it is characterised in that：It also twists off screwdriver（10）, turn round
Disconnected screwdriver（10）By handle（11）, cone bar（12）, conehead（13）Composition, handle（11）With cone bar（12）, conehead（13）Successively connect
It connects, conehead（13）Front end have an inner hole, inner hole is hexagon, the hexagon and pressurization nut of inner hole（2）Peripheral shape phase
Match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810879668.6A CN108904024B (en) | 2018-08-03 | 2018-08-03 | Self-breaking type pressurizing bolt assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810879668.6A CN108904024B (en) | 2018-08-03 | 2018-08-03 | Self-breaking type pressurizing bolt assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108904024A true CN108904024A (en) | 2018-11-30 |
| CN108904024B CN108904024B (en) | 2019-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810879668.6A Active CN108904024B (en) | 2018-08-03 | 2018-08-03 | Self-breaking type pressurizing bolt assembly |
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| Country | Link |
|---|---|
| CN (1) | CN108904024B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2324964A (en) * | 1997-05-08 | 1998-11-11 | Isis Innovation | Bone fixation device |
| US6547793B1 (en) * | 1996-12-06 | 2003-04-15 | David A. McGuire | Systems and methods for producing osteotomies |
| US20090228049A1 (en) * | 2008-03-09 | 2009-09-10 | Park Sangdo | Connecting Cannulated Bone Screws |
| CN202235657U (en) * | 2011-08-11 | 2012-05-30 | 张英泽 | Screw device capable of performing effective pressurization |
| CN105232128A (en) * | 2015-10-29 | 2016-01-13 | 陈志力 | Fixing device in patella |
| CN209203471U (en) * | 2018-08-03 | 2019-08-06 | 河北医科大学第三医院 | A kind of self-stopping type pressurization bolt component |
-
2018
- 2018-08-03 CN CN201810879668.6A patent/CN108904024B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6547793B1 (en) * | 1996-12-06 | 2003-04-15 | David A. McGuire | Systems and methods for producing osteotomies |
| GB2324964A (en) * | 1997-05-08 | 1998-11-11 | Isis Innovation | Bone fixation device |
| US20090228049A1 (en) * | 2008-03-09 | 2009-09-10 | Park Sangdo | Connecting Cannulated Bone Screws |
| CN202235657U (en) * | 2011-08-11 | 2012-05-30 | 张英泽 | Screw device capable of performing effective pressurization |
| CN105232128A (en) * | 2015-10-29 | 2016-01-13 | 陈志力 | Fixing device in patella |
| CN209203471U (en) * | 2018-08-03 | 2019-08-06 | 河北医科大学第三医院 | A kind of self-stopping type pressurization bolt component |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108904024B (en) | 2019-12-31 |
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