CN106725793A - A kind of intercondylar ridge internal fixation hollow screw of detachable taking-up - Google Patents
A kind of intercondylar ridge internal fixation hollow screw of detachable taking-up Download PDFInfo
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- CN106725793A CN106725793A CN201710016080.3A CN201710016080A CN106725793A CN 106725793 A CN106725793 A CN 106725793A CN 201710016080 A CN201710016080 A CN 201710016080A CN 106725793 A CN106725793 A CN 106725793A
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- hollow screw
- hole
- screw bar
- bar
- wall
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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
- A61B17/74—Devices for the head or neck or trochanter of the femur
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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)
- Biomedical Technology (AREA)
- Neurology (AREA)
- 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 intercondylar ridge internal fixation hollow screw of detachable taking-up, belongs to orthopedic medical device technical field, for being fixed to neck of femur Intercondylar fracture.Its technical scheme is：Its tapping screw head has along six prismatic connecting holes of axis direction, the endoporus front end of hollow screw bar is six prismatic holes, the six prismatic holes matching of the two ends of connecting rod connecting hole, the endoporus front end of hollow screw bar respectively with tapping screw head is connected, hole is grown into the middle part of hollow screw bar, grow into the elongated hole that hole is the length direction along hollow screw bar, multiple grows into circumference equidistant arrangement of the orifice ring around hollow screw bar, each both sides long side edge for growing into hole is sharp chamfering, and the baseplane of chamfering is intersected with the inner hole wall of hollow screw bar.The present invention can grow in the hollow screw that fracture site synthetism growth period allows bone trabecula to enter interior fixation simultaneously, play bionical effect, can allow that patient carries out functional training earlier, shorten recovery time.
Description
Technical field
The present invention relates to a kind of internal fixation screw being fixed to femoral intercondylar ridge fracture, belong to orthopedic medical device skill
Art field.
Background technology
Internal fixation treatment is a kind of irreplaceable important method in treatment femoral intercondylar ridge fracture, and hollow screw is fixed
Intercondylar eminence fracture operation technique is easy, and topography separates less, and operating time is short, simultaneously because its chorista is few, otch
It is small, therefore intraoperative hemorrhage is less, perioperative blood transfusion number of cases and transfusion volume are less.Due to long bone of limbs two ends, vertebra, the calcaneum of human body
Deng having important trabecular bone structure in bone cancellous bone, to maintaining bone normal morphology and mechanotransduction to play a crucial role.But
Inside-fixture is implanted into after fracture can further destroy trabecular bone structure, and the presence of inside-fixture can hinder bone trabecula in union
During rebuild, it is impossible to effectively recover bone part normal configuration and mechanotransduction performance, stress raisers may be caused, make
Loosened into inside-fixture, exited, be broken, nonunion, the complication such as inside-fixture surrounding fracture.Therefore interior fixation is being used
When art is treated to Intercondylar fracture, must also second operation taking-up inside-fixture after union.Because inside-fixture influences bone
The recovery of fracture site during folding healing, therefore how to reduce this influence and promote the recovery as early as possible of fracture site, shorten and suffer from
The time of person's recovery from illness is current problem demanding prompt solution.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of intercondylar ridge internal fixation hollow screw of detachable taking-up, this
Planting hollow screw can allow bone trabecula to enter growth in hollow screw, increase the intensity of fracture site, and promotion fracture is recovered as early as possible,
Shorten treatment time.
Solving the technical scheme of above-mentioned technical problem is：
A kind of intercondylar ridge internal fixation hollow screw of detachable taking-up, it includes tapping screw head, connecting rod, hollow screw bar,
Tapping screw head has along the connecting hole of axis direction, and connecting hole is six prismatic holes, and the endoporus front end of hollow screw bar is six ribs
Shape hole, the outer wall of connecting rod is six prisms, in the two ends of connecting rod connecting hole respectively with tapping screw head, hollow screw bar
The outer wall at the six prismatic holes matching connection of hole front end, hollow screw bar front end and middle part is cylinder, the rear end of hollow screw bar
Outer wall is hexagon, and hole is grown into the middle part of hollow screw bar, grows into the length that hole is the length direction along hollow screw bar
Hole, multiple grows into circumference equidistant arrangement of the orifice ring around hollow screw bar, and each both sides long side edge for growing into hole is sharp falling
Intersect with the inner hole wall of hollow screw bar angle, the baseplane of chamfering.
The intercondylar ridge internal fixation hollow screw of above-mentioned detachable taking-up, the circumference of the circular hollow screw bar grows into hole and is
4-20, each width for growing into hole is 1-3mm.
The intercondylar ridge internal fixation hollow screw of above-mentioned detachable taking-up, the diameter of bore of the hollow screw bar is hollow spiral shell
1/3-the 1/4 of nail rod external diameter, the inner hole wall of endoporus rear end is hexagon.
The intercondylar ridge internal fixation hollow screw of above-mentioned detachable taking-up, it also has matching used screwdriver, the front end of screwdriver
There is a groove perpendicular to screwdriver front end face, groove is hexagon, six prism phases of hexagon and hollow screw bar rear portion outer wall
Match somebody with somebody, the hexagonal side wall of groove is vertical with screwdriver end face, the depth of groove and six prism length of hollow screw bar rear portion outer wall
Match, groove center has the rotating bar of hexagon section, hexagon section and the hollow screw rod rear end inner hole wall of rotating bar
Hexagon match.
The beneficial effects of the invention are as follows：
The Split type structure that the present invention is tapping screw head, connecting rod and hollow screw bar are constituted, facilitates the taking-up of hollow screw bar；
There is multiple to grow into hole on hollow screw bar, bone trabecula can rise along being grown in the endoporus for growing into hole and entering into hollow screw bar
To bionical effect.
The present invention is that hollow screw fixes the pioneering of Intercondylar fracture operation, can after hollow screw squeezes into intercondylar ridge,
Along the compression trabeculae of vertical direction or diagonal can directly grow into 4-20 on hollow screw circumference it is hollow grow among hole,
Bionical effect is played, can allow that patient carries out functional training earlier, shorten recovery time.Taking out hollow screw
When, because fracture site is recovered, hollow screw is taken out will not be impacted to fracture and sclerotin.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the A-A sectional views of Fig. 1；
Fig. 3 is the B-B sectional views of Fig. 1；
Fig. 4 is the structural representation of screwdriver.
Marked in figure as follows：Tapping screw first 1, connecting rod 2, hollow screw bar 3, connecting hole 4, endoporus 5, grow into hole 6, fall
Angle 7, screwdriver 8, groove 9, rotating bar 10.
Specific embodiment
Fig. 1 shows that the present invention is made up of tapping screw first 1, connecting rod 2, hollow screw bar 3, screwdriver 8.
Fig. 2 shows, tapping screw first 1 has along the connecting hole 4 of axis direction, and connecting hole 4 is six prismatic holes, for even
Extension bar 2 is connected.
Fig. 1,2 displays, the front end of endoporus 5 of hollow screw bar 3 is six prismatic holes, and the outer wall of connecting rod 2 is six prisms, connection
First with tapping screw 1 connecting hole 4, the six prismatic holes matching of the front end of endoporus 5 of hollow screw bar 3 are connected respectively at the two ends of bar 2.
Hollow screw bar 3 is rotated, hollow screw bar 3 will drive tapping screw first 1 to rotate by connecting rod 2, in screw-in sclerotin.
The outer wall at Fig. 1,2 displays, the front end of hollow screw bar 3 and middle part is cylinder, and the rear end outer wall of hollow screw bar 3 is
Hexagon, for being connected with screwdriver 8, hollow screw bar 3 is rotated by screwdriver 8.
Fig. 1,2,3 show that the middle part of hollow screw bar 3 grows into hole 6, and it is the length along hollow screw bar 3 to grow into hole 6
The elongated hole in direction, multiple grows into circumference equidistant arrangement of the hole 6 around hollow screw bar 3.The purpose that setting grows into hole 6 is to make bone small
Beam grows along in the endoporus 5 for growing into hole 6 and entering into hollow screw bar 3.
Fig. 3 shows that each both sides long side edge for growing into hole 6 is sharp chamfering 7, the baseplane of chamfering 7 and hollow spiral shell
The inner hole wall of nail rod 3 intersects.During hollow screw bar 3 is taken out, the tip portion of chamfering 7 can will grow into the bone in hole 6
Matter is cut, to take out hollow screw bar 3.When hollow screw is taken out, because fracture site is recovered, hollow screw is taken
Fracture and sclerotin will not be impacted when going out.
Fig. 1,2,3 show that it is 4-20 to grow into hole around the circumference of hollow screw bar, and each width for growing into hole is 1-
3mm。
The display of Fig. 1,2,3,1/3-the 1/4 of a diameter of external diameter of hollow screw bar 3 of endoporus 5 of hollow screw bar 3, after endoporus
The inner hole wall at end is hexagon.
Fig. 4 shows, there is a groove 9 perpendicular to the front end face of screwdriver 88 front ends of screwdriver, and groove 9 is hexagon, hexagon with
Six prisms of the rear portion outer wall of hollow screw bar 3 match, and the hexagonal side wall of groove 9 is vertical with the end face of screwdriver 8, the depth of groove 9
Degree matches with six prism length of the rear portion outer wall of hollow screw bar 3.There is the rotating bar 10 of hexagon section at the center of groove 9, turns
The hexagon section of lever 10 matches with the hexagon of the rear end inner hole wall of hollow screw bar 3.During using screwdriver 8, before screwdriver 8
The groove 9 at end is enclosed within six prisms of the rear portion outer wall of hollow screw bar 3, and rotating bar 10 is inserted into the rear end endoporus of hollow screw bar 3
In the hexagon of wall, the handle for rotating screwdriver 8 is rotatable hollow screw bar 3.
Application method of the invention is as follows：
By six prismatics of the two ends of connecting rod 2 first with tapping screw 1 connecting hole 4, the front end of endoporus 5 of hollow screw bar 3 respectively
Hole matching connection.Then the groove 9 of the front end of screwdriver 8 is enclosed within six prisms of the rear portion outer wall of hollow screw bar 3, screwdriver 8 it is recessed
The rotating bar at the center of groove 9 is inserted into the hexagon of the rear end inner hole wall of hollow screw bar 3,.
The two-layer cortex of intercondylar ridge is squeezed into using guide pin, is all beaten, then hollow screw is set on guide pin, squeeze into condyle
Between ridge, after squeezing into take out guide pin.Tapping screw first 1 is directed at sclerotin position, the handle for rotating screwdriver 8 is rotatable hollow
Shank of screw 3, hollow screw bar 3 will drive tapping screw first 1 rotate by connecting rod 2, in screwing in sclerotin, most hollow spiral shell at last
The tapping screw first 1 of nail passes contralateral cortex.Treat that screw thread is all passed after producing cortex, tapping screw head is directly removed from offside
1.There is the threaded region that do not have of 2-5mm behind the threaded part of tapping screw head, be so connected with hollow screw below
Later, above all threaded parts are being passed from offside, you can remove screw head, and can be arranged as required to
The depth that hollow screw enters.
When taking out hollow screw, rotated after screwdriver 8 is connected with hollow screw bar 3, hollow screw bar 3 grows into hole
The sclerotin that the tip portion of 6 chamfering 7 will can be grown into hole 6 cuts away, and pulls out hollow screw bar 3.Taking out hollow spiral shell
During nail, because fracture site is recovered, fracture and sclerotin will not be impacted when hollow screw is taken out.
Claims (4)
1. the intercondylar ridge internal fixation hollow screw of a kind of detachable taking-up, it is characterised in that：It includes tapping screw head（1）, even
Extension bar（2）, hollow screw bar（3）, tapping screw head（1）Have along the connecting hole of axis direction（4）, connecting hole（4）It is six ribs
Shape hole, hollow screw bar（3）Endoporus（5）Front end is six prismatic holes, connecting rod（2）Outer wall be six prisms, connecting rod（2）'s
Two ends respectively with tapping screw head（1）Connecting hole（4）, hollow screw bar（3）Endoporus（5）The six prismatic holes matching of front end connects
Connect, hollow screw bar（3）The outer wall at front end and middle part is cylinder, hollow screw bar（3）Rear end outer wall be hexagon, it is empty
Heart shank of screw（3）Middle part grow into hole（6）, grow into hole（6）It is along hollow screw bar（3）Length direction elongated hole, it is many
It is individual to grow into hole（6）Around hollow screw bar（3）Circumference equidistant arrangement, each grows into hole（6）Both sides long side edge be sharp
Chamfering（7）, chamfering（7）Baseplane and hollow screw bar（3）Inner hole wall intersect.
2. the intercondylar ridge internal fixation hollow screw of detachable taking-up according to claim 1, it is characterised in that：It is described to surround
Hollow screw bar（3）Circumference grow into hole（6）It it is 4-20, each grows into hole（6）Width be 1-3mm.
3. the intercondylar ridge internal fixation hollow screw of detachable taking-up according to claim 2, it is characterised in that：It is described hollow
Shank of screw（3）Endoporus（5）A diameter of hollow screw bar（3）1/3-the 1/4 of external diameter, endoporus（5）The inner hole wall of rear end is six sides
Shape.
4. the intercondylar ridge internal fixation hollow screw of detachable taking-up according to claim 3, it is characterised in that：It also has matches somebody with somebody
The screwdriver that set is used（8）, screwdriver（8）Front end have perpendicular to screwdriver（8）The groove of front end face（9）, groove（9）It is hexagon,
Hexagon and hollow screw bar（3）Six prisms of rear portion outer wall match, groove（9）Hexagonal side wall and screwdriver（8）End face
Vertically, groove（9）Depth and hollow screw bar（3）Six prism length of rear portion outer wall match, groove（9）There are six sides at center
The rotating bar of tee section（10）, rotating bar（10）Hexagon section and hollow screw bar（3）The hexagon phase of rear end inner hole wall
Matching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016080.3A CN106725793A (en) | 2017-01-10 | 2017-01-10 | A kind of intercondylar ridge internal fixation hollow screw of detachable taking-up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016080.3A CN106725793A (en) | 2017-01-10 | 2017-01-10 | A kind of intercondylar ridge internal fixation hollow screw of detachable taking-up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106725793A true CN106725793A (en) | 2017-05-31 |
Family
ID=58948564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710016080.3A Pending CN106725793A (en) | 2017-01-10 | 2017-01-10 | A kind of intercondylar ridge internal fixation hollow screw of detachable taking-up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106725793A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107049456A (en) * | 2017-05-12 | 2017-08-18 | 王文军 | Pedicle screw internal fixation operation lock screw and supporting wrench set |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6019760A (en) * | 1996-01-19 | 2000-02-01 | Howmedica Gmbh | Spine implant |
| US20100036440A1 (en) * | 2008-08-11 | 2010-02-11 | Arch Day Design, Llc | Collapsible bone screw apparatus |
| US20100286732A1 (en) * | 2002-10-04 | 2010-11-11 | Biedermann Motech Gmbh | Bone screw and bone screw with holding element |
| EP2343020A1 (en) * | 2010-01-08 | 2011-07-13 | Biedermann Motech GmbH & Co. KG | Bone screw |
| CN103083080A (en) * | 2011-11-04 | 2013-05-08 | 无锡世一电力机械设备有限公司 | Internal fixation screw |
| US20130317503A1 (en) * | 2012-05-22 | 2013-11-28 | Matthew Songer | Bone fixation screw and method |
| CN104125809A (en) * | 2012-02-15 | 2014-10-29 | 华沙整形外科股份有限公司 | Bone fastener and methods of use |
| CN104224289A (en) * | 2014-10-13 | 2014-12-24 | 张英泽 | Bidirectional forcing sleeve nail for restoration fixation |
| WO2014209976A2 (en) * | 2013-06-24 | 2014-12-31 | The University Of Toledo | Bioactive fusion device |
| CN104736083A (en) * | 2012-08-07 | 2015-06-24 | 斯皮纳产生有限责任公司 | Devices for delivery of medicine to bone |
| US20150297276A1 (en) * | 2008-03-25 | 2015-10-22 | The Center For Orthopedic Research And Education, Inc. | Placement Tool For Bone Screw Assembly, And Systems and Methods Of Using Same |
| CN105263440A (en) * | 2013-04-09 | 2016-01-20 | 史密夫和内修有限公司 | Open-architecture interference screw |
| CN105877832A (en) * | 2014-12-27 | 2016-08-24 | 王建平 | Femoral neck fixing mechanism and femoral neck fracture fixing structure thereof |
-
2017
- 2017-01-10 CN CN201710016080.3A patent/CN106725793A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6019760A (en) * | 1996-01-19 | 2000-02-01 | Howmedica Gmbh | Spine implant |
| US20100286732A1 (en) * | 2002-10-04 | 2010-11-11 | Biedermann Motech Gmbh | Bone screw and bone screw with holding element |
| US20150297276A1 (en) * | 2008-03-25 | 2015-10-22 | The Center For Orthopedic Research And Education, Inc. | Placement Tool For Bone Screw Assembly, And Systems and Methods Of Using Same |
| US20100036440A1 (en) * | 2008-08-11 | 2010-02-11 | Arch Day Design, Llc | Collapsible bone screw apparatus |
| EP2343020A1 (en) * | 2010-01-08 | 2011-07-13 | Biedermann Motech GmbH & Co. KG | Bone screw |
| CN103083080A (en) * | 2011-11-04 | 2013-05-08 | 无锡世一电力机械设备有限公司 | Internal fixation screw |
| CN104125809A (en) * | 2012-02-15 | 2014-10-29 | 华沙整形外科股份有限公司 | Bone fastener and methods of use |
| US20130317503A1 (en) * | 2012-05-22 | 2013-11-28 | Matthew Songer | Bone fixation screw and method |
| CN104736083A (en) * | 2012-08-07 | 2015-06-24 | 斯皮纳产生有限责任公司 | Devices for delivery of medicine to bone |
| CN105263440A (en) * | 2013-04-09 | 2016-01-20 | 史密夫和内修有限公司 | Open-architecture interference screw |
| WO2014209976A2 (en) * | 2013-06-24 | 2014-12-31 | The University Of Toledo | Bioactive fusion device |
| CN104224289A (en) * | 2014-10-13 | 2014-12-24 | 张英泽 | Bidirectional forcing sleeve nail for restoration fixation |
| CN105877832A (en) * | 2014-12-27 | 2016-08-24 | 王建平 | Femoral neck fixing mechanism and femoral neck fracture fixing structure thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107049456A (en) * | 2017-05-12 | 2017-08-18 | 王文军 | Pedicle screw internal fixation operation lock screw and supporting wrench set |
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| PB01 | Publication | ||
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Application publication date: 20170531 |