CN103584907A - Internal fixation device for orthopedic surgery - Google Patents
Internal fixation device for orthopedic surgery Download PDFInfo
- Publication number
- CN103584907A CN103584907A CN201310635197.1A CN201310635197A CN103584907A CN 103584907 A CN103584907 A CN 103584907A CN 201310635197 A CN201310635197 A CN 201310635197A CN 103584907 A CN103584907 A CN 103584907A
- Authority
- CN
- China
- Prior art keywords
- screw
- hole
- fixing device
- blade plate
- inner fixing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
Abstract
The invention provides an internal fixation device for an orthopedic surgery. The internal fixation device comprises a bone connecting plate and locking screws. The bone connecting plate is provided with at least two threaded locking holes. The threaded holes are arranged in the length direction of the body of the bone connecting plate, and the locking screws are arranged in the threaded locking holes. The internal fixation device has the advantages of reducing or even eliminating pressure applied to the periosteum of a fraction end by the bone connecting plate, accelerating broken bone knitting, improving shearing resisting performance of the bone connecting plate and preventing the failure of replacement.
Description
Technical field
The invention belongs to bone surgery equipment field, especially relate to a kind of bone surgery inner fixing device.
Background technology
In bone surgery, need to utilize blade plate and bone screw to implement fracture site fixing, conventional steel plates is used conventional pressurized screw to be fixed on knochenbruch, for preventing that the knochenbruch displacement of postoperative reset need be pressed on knochenbruch surface by blade plate by forcing screw, now, knochenbruch will bear the very high compressive stress that comes from blade plate, oppress periosteum, affect fracture end blood supply, extend recovery time, simultaneously, conventional pressurized screw has lighter resistance for shearing force, easily because the loosening loss that causes knochenbruch to reset occurs shearing force.Exist blade plate opposing shearing force poor, causing resets loses, and compressing periosteum affects the technical problems such as knochenbruch recovery.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of bone surgery inner fixing device, when not oppressing periosteum, can resist stronger shearing force.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of bone surgery inner fixing device, comprise blade plate and lock screw, described blade plate is provided with at least two locking screw thread holes, described screwed hole is arranged along the plate body length direction of blade plate, and described thread lock is provided with described lock screw in hole.
Further, described blade plate is dissection type bone fracture plate, and described dissection type bone fracture plate is provided with relief groove near knochenbruch side.
Further, described blade plate is titanium alloy blade plate or pure titanium bone plate.
Further, described blade plate be strip and at least one end for most advanced and sophisticated.
Further, described locking screw thread hole is conical screw hole, and the angle of thread of described conical screw hole is 15 °～25 °.
Further, the screw thread of described conical screw hole is double thread.
Further, described lock screw comprises head of screw and shank of screw; Described head of screw is and the cone screw head of described conical screw hole cooperating that head of screw is provided with the screw thread with conical screw hole cooperating; Described shank of screw is cylindrical and is provided with screw thread.
Further, described shank of screw end is that drill bit shape can directly pierce in skeleton lock screw under twisting force.
Further, described blade plate also comprises locking compress combination bore or pressurization hole.
Further, described locking compress combination bore comprises partly overlapping locking screw thread hole and pressurization hole, and described pressurization hole is arc counterbore, and described arc counterbore is provided with and adds pressure slope, and the angle that adds pressure slope is 30 °～50 °.
Advantage and good effect that the present invention has are: owing to adopting technique scheme, reduce and even eliminate the pressure of blade plate to fracture end periosteum, accelerate knochenbruch healing, improve blade plate anti-shear ability, prevent from resetting and lose.
Accompanying drawing explanation
Fig. 1 is using state schematic diagram of the present invention;
Fig. 2 is the structural representation of conical screw hole of the present invention;
Fig. 3 is the structural representation of locking compress combination bore of the present invention.
In figure:
1, blade plate 2, head of screw 3, shank of screw
4, knochenbruch 5, conical screw hole 6, locking compress combination bore
7, add pressure slope 8, fracture line
The specific embodiment
As Figure 1-3, a kind of embodiment of a kind of bone surgery inner fixing device of the present invention, comprises blade plate 1 and lock screw, and blade plate 1 is provided with at least two locking screw thread holes, screwed hole is arranged along the plate body length direction of blade plate 1, and thread lock is provided with lock screw in hole; Blade plate 1 is dissection type bone fracture plate 1, and dissection type bone fracture plate 1 is provided with relief groove near knochenbruch 4 sides; Blade plate 1 is titanium alloy or pure titanium bone plate 1; Blade plate 1 is as tip for strip and two ends; Locking screw thread hole is conical screw hole 5, and the angle of thread of conical screw hole 5 is 20 °; The screw thread of conical screw hole 5 is double thread; Lock screw comprises head of screw 2 and shank of screw 3; Head of screw 2 is and the cone screw head 2 of conical screw hole 5 cooperatings that head of screw 2 is provided with the screw thread with conical screw hole 5 cooperatings; Shank of screw 3 is cylindrical and is provided with screw thread; Shank of screw 3 ends are that drill bit shape can directly pierce in skeleton lock screw under twisting force; Blade plate 1 also comprises 3 locking compress combination bore 6 or 3 pressurization holes; Locking adds combination and presses hole 6 or pressurization hole and conical screw hole 5 to be arranged on the centrage of blade plate 1, locking compress combination bore 6 comprises partly overlapping conical screw hole 5 and pressurization hole, pressurization hole is arc counterbore, arc counterbore is provided with and adds pressure slope 7, the angle that adds pressure slope 7 is 40 °, locking compress combination bore 6 as required choice for use lock screw or forcing screw for to the pressurization of knochenbruch 4 or for locking bone fracture plate 1.
The work process of this example: first the blade plate of above-described embodiment 1 is put into knochenbruch 4 precalculated positions in the operation of Fracture of femur, the position that generally blade plate 1 is placed should make fracture line 8 be positioned at the position of blade plate 1 centrage, then be screwed into lock screw, the drill bit shape structure of shank of screw 3 ends can directly pierce in skeleton it under the effect of torsion, the threaded engagement work of the head of screw 2 of conical screw hole 5 and lock screw is twisted as being locked on blade plate 1 after certain depth in skeleton lock screw, cannot continue deeply, in locking bone fracture plate 1, can not give blade plate 1 compressive stress, therefore blade plate 1 can not exerted pressure to periosteum, guarantee the supply of periosteum end blood, accelerate knochenbruch 4 healings, due to lock screw and conical screw hole 5 cooperatings, can there is not relative displacement in lock screw and blade plate 1 when knochenbruch 4 bears shearing force, can not cause the loss of reset, meanwhile, for 4 of knochenbruch are pressurizeed so that the separated situation of the unlikely appearance of knochenbruch 4, before being screwed into lock screw, can in locking compress combination bore 6 or pressurization hole, first be screwed into forcing screw knochenbruch 4 is carried out to the pressurization of some strength, being screwed into lock screw is fixed again, forcing screw extruding adds pressure slope 7 makes forcing screw drive knochenbruch 4 to motion in the other direction, because the direction that adds pressure slope 7 of the centrage left and right sides on blade plate 1 is relative, therefore make knochenbruch 4 relative motioies of fracture line 8 both sides, two knochenbruch 4 are exerted pressure, this pressure is along knochenbruch 4 pressure longitudinally, prevent that knochenbruch 4 from affecting knochenbruch 4 healings in discrete state.
Above one embodiment of the present of invention are had been described in detail, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variations of doing according to the present patent application scope and improvement etc., within all should still belonging to patent covering scope of the present invention.
Claims (10)
1. a bone surgery inner fixing device, it is characterized in that: comprise blade plate and lock screw, described blade plate is provided with at least two locking screw thread holes, and described screwed hole is arranged along the plate body length direction of blade plate, and described thread lock is provided with described lock screw in hole.
2. bone surgery inner fixing device according to claim 1, is characterized in that: described blade plate is dissection type bone fracture plate, and described dissection type bone fracture plate is provided with relief groove near knochenbruch side.
3. bone surgery inner fixing device according to claim 1, is characterized in that: described blade plate is titanium alloy blade plate or pure titanium bone plate.
4. bone surgery inner fixing device according to claim 1, is characterized in that: described blade plate be strip and at least one end for most advanced and sophisticated.
5. bone surgery inner fixing device according to claim 1, is characterized in that: described locking screw thread hole is conical screw hole, and the angle of thread of described conical screw hole is 15 °～25 °.
6. bone surgery inner fixing device according to claim 5, is characterized in that: the screw thread of described conical screw hole is double thread.
7. bone surgery inner fixing device according to claim 1, is characterized in that: described lock screw comprises head of screw and shank of screw; Described head of screw is and the cone screw head of described conical screw hole cooperating that head of screw is provided with the screw thread with conical screw hole cooperating; Described shank of screw is cylindrical and is provided with screw thread.
8. bone surgery inner fixing device according to claim 7, is characterized in that: described shank of screw end is that drill bit shape can directly pierce in skeleton lock screw under twisting force.
9. bone surgery inner fixing device according to claim 1, is characterized in that: described blade plate also comprises locking compress combination bore or pressurization hole.
10. bone surgery inner fixing device according to claim 9, it is characterized in that: described locking compress combination bore comprises partly overlapping locking screw thread hole and pressurization hole, described pressurization hole is arc counterbore, and described arc counterbore is provided with and adds pressure slope, and the angle that adds pressure slope is 30 °～50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310635197.1A CN103584907A (en) | 2013-11-28 | 2013-11-28 | Internal fixation device for orthopedic surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310635197.1A CN103584907A (en) | 2013-11-28 | 2013-11-28 | Internal fixation device for orthopedic surgery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103584907A true CN103584907A (en) | 2014-02-19 |
Family
ID=50075378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310635197.1A Pending CN103584907A (en) | 2013-11-28 | 2013-11-28 | Internal fixation device for orthopedic surgery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103584907A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691558A (en) * | 2015-08-06 | 2017-05-24 | 天津市威曼生物材料有限公司 | Tibia proximal combined type fixing device |
| CN109966013A (en) * | 2019-05-08 | 2019-07-05 | 天津市康尔医疗器械有限公司 | A kind of Cephalic shadow mask device |
| CN111544104A (en) * | 2019-05-15 | 2020-08-18 | 华中科技大学同济医学院附属协和医院 | Mortise and tenon structure splicing type fracture reduction pressurization internal fixation device |
| CN111544104B (en) * | 2019-05-15 | 2024-04-30 | 华中科技大学同济医学院附属协和医院 | Mortise and tenon structure spliced fracture reduction pressurizing internal fixing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110218574A1 (en) * | 2010-03-03 | 2011-09-08 | Warsaw Orthopedic, Inc. | Dynamic vertebral construct |
| CN102188282A (en) * | 2010-03-08 | 2011-09-21 | 史赛克创伤公司 | Bone fixation system with curved profile threads |
| CN102551863A (en) * | 2010-12-28 | 2012-07-11 | 北京国人骨科医疗器械有限公司 | Anatomical humerus bridge-type bone fracture plate |
| CN102551861A (en) * | 2010-12-28 | 2012-07-11 | 北京国人骨科医疗器械有限公司 | Bridge type bone fracture plate for anatomic clavicle |
-
2013
- 2013-11-28 CN CN201310635197.1A patent/CN103584907A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110218574A1 (en) * | 2010-03-03 | 2011-09-08 | Warsaw Orthopedic, Inc. | Dynamic vertebral construct |
| CN102188282A (en) * | 2010-03-08 | 2011-09-21 | 史赛克创伤公司 | Bone fixation system with curved profile threads |
| CN102551863A (en) * | 2010-12-28 | 2012-07-11 | 北京国人骨科医疗器械有限公司 | Anatomical humerus bridge-type bone fracture plate |
| CN102551861A (en) * | 2010-12-28 | 2012-07-11 | 北京国人骨科医疗器械有限公司 | Bridge type bone fracture plate for anatomic clavicle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691558A (en) * | 2015-08-06 | 2017-05-24 | 天津市威曼生物材料有限公司 | Tibia proximal combined type fixing device |
| CN109966013A (en) * | 2019-05-08 | 2019-07-05 | 天津市康尔医疗器械有限公司 | A kind of Cephalic shadow mask device |
| CN111544104A (en) * | 2019-05-15 | 2020-08-18 | 华中科技大学同济医学院附属协和医院 | Mortise and tenon structure splicing type fracture reduction pressurization internal fixation device |
| CN111544104B (en) * | 2019-05-15 | 2024-04-30 | 华中科技大学同济医学院附属协和医院 | Mortise and tenon structure spliced fracture reduction pressurizing internal fixing device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140219 |