CN204337030U - A kind of Combined bone screw - Google Patents
A kind of Combined bone screw Download PDFInfo
- Publication number
- CN204337030U CN204337030U CN201420828308.0U CN201420828308U CN204337030U CN 204337030 U CN204337030 U CN 204337030U CN 201420828308 U CN201420828308 U CN 201420828308U CN 204337030 U CN204337030 U CN 204337030U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- outer sleeve
- inside connecting
- sleeve body
- fracture
- 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.)
- Active
Links
- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 24
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 230000035876 healing Effects 0.000 abstract description 14
- 230000000638 stimulation Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000009940 knitting Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008468 bone growth Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Abstract
A kind of Combined bone screw, relate to fracture operation medical apparatus and instruments, comprise inside connecting rod and outer sleeve body, inside connecting rod upper end is provided with the head of a nail, be provided with external screw thread outside outer sleeve body, inside connecting rod lower diameter is greater than upper diameter, and inside connecting rod bottom circumference is uniformly distributed six connecting holes, outer sleeve body is provided with fixing hole with connecting hole opposite position, in connecting hole and fixing hole, is provided with connecting pin.After using this utility model to be fixed by the bone block of fracture fracture board, because inside connecting rod lower diameter is greater than upper diameter, between inside connecting rod top and outer sleeve body, there is free gap, sclerite has small free gap in the longitudinal direction of contact surface, meet the stimulation that relative motion among a small circle required when healing between sclerite produces, speed of fracture union is fast, healing effect good.
Description
Technical field
The present invention relates to fracture operation medical apparatus and instruments, is specifically a kind ofly have certain mobility, the Combined bone screw that knitting speed is fast, effective.
Background technology
We know, in fracture operation, conventional means use blade plate and bone screw to implement fixing to fracture site, and blade plate is fixed with two sections of skeletons of fracture, is connected by bone screw, after recovery healing after a while, the bone growth of breaking part, healing.Medical research shows, there is direct relation the bone interblock healing situation of fracture and the free gap of two bone interblocks, bone interblock relative motion among a small circle can play positive stimulation to the healing between fracture face, when the bone interblock of fracture longitudinally has the free gap of 0.2-1 millimeter, speed of fracture union is the fastest, and healing effect is best.Fixing comparatively firm to fracture skeleton of existing fracture board and bone screw, the relative motion of the fracture end face of sclerite part relies on the deformation of fracture steel plate to realize, and can not meet above-mentioned requirements, causes that the healing rate of fracture is slow, weak effect.
Summary of the invention
The object of the invention is to solve above-mentioned the deficiencies in the prior art, provide a kind of fracture end face of fracture can fine motion relatively, the Combined bone screw that knitting speed is fast, effective.
Another object of the present invention is to provide a kind of stable connection, dependable performance, inside connecting rod and the unseparated Combined bone screw of outer sleeve body in use procedure.
The present invention solves the problems of the technologies described above adopted technical scheme:
A kind of Combined bone screw, it is characterized in that comprising inside connecting rod and outer sleeve body, inside connecting rod upper end is provided with the head of a nail, external screw thread is provided with outside outer sleeve body, inside connecting rod lower diameter is greater than upper diameter, inside connecting rod bottom circumference is uniformly distributed six connecting holes, outer sleeve body is provided with fixing hole with connecting hole opposite position, is provided with connecting pin in connecting hole and fixing hole.
Inside connecting rod bottom described in the present invention in the shape of a spiral, be evenly equipped with the connecting hole of six in circumference 720 degree.
Outer sleeve lower end described in the present invention is provided with tapping screw head.
The head of a nail described in the present invention is provided with quincunx slotted eye.
Connecting pin described in the present invention is hexagon socket head cap screw, and connecting hole and fixing hole are screwed hole.
After using the present invention to be fixed by the bone block of fracture fracture board, because inside connecting rod lower diameter is greater than upper diameter, between inside connecting rod top and outer sleeve body, there is free gap, sclerite has small free gap in (vertically) longitudinal direction of contact surface, meet the stimulation that relative motion among a small circle required when healing between sclerite produces, speed of fracture union is fast, healing effect good.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of inside connecting rod in the present invention.
Fig. 3 is the structural representation of outer sleeve body in the present invention.
Fig. 4 is the perspective view of outer sleeve body in the present invention.
Detailed description of the invention
Combined bone screw as shown in the figure, comprises inside connecting rod 3 and outer sleeve body 2, and inside connecting rod 3 upper end is provided with the head of a nail 1, and the head of a nail is provided with quincunx slotted eye.External screw thread is provided with outside outer sleeve body 2, inside connecting rod 3 lower diameter is identical with the internal diameter of outer sleeve body 2, inside connecting rod upper diameter is less than lower diameter, inside connecting rod bottom is inserted after in outer sleeve body, the axis of inside connecting rod overlaps with the axis of outer sleeve body, the periphery on inside connecting rod top is equal apart from the distance of outer sleeve body medial wall, and after inside connecting rod is stressed, operating range and the deformation quantity in any direction of its top in outer sleeve body are identical.Avoid occurring that inside connecting rod one lateral extent outer sleeve body medial wall is crossed closely, even to recline, make the limitation of activity of bone block, affect healing rate and healing effect.Inside connecting rod bottom circumference is uniformly distributed six connecting holes 5, and outer sleeve body is provided with fixing hole 6 with connecting hole 5 opposite position, and be provided with connecting pin 4 in connecting hole 5 and fixing hole 6, connecting pin 4 is hexagon socket head cap screw, and connecting hole is screwed hole.Preferred scheme is: inside connecting rod bottom is helically evenly equipped with the connecting hole of six in post, circumference 720 degree, and namely six connecting holes are uniformly distributed on the helix of 720 degree of connecting rod bottom.Inside connecting rod and outer sleeve body are fixed more firm, separation of can not rupturing because torsion is excessive in operation process.Outer sleeve lower end is provided with tapping screw head, implants in skeleton when being more conducive to operation.
After using the present invention to be fixed by the bone block of fracture fracture board, because inside connecting rod lower diameter is greater than upper diameter, between inside connecting rod top and outer sleeve body, there is free gap, the sclerite direction of vertical two sclerite contact surfaces (i.e. on) in the longitudinal direction of contact surface has small free gap, meet the stimulation that relative motion among a small circle required when healing between sclerite produces, speed of fracture union is fast, healing effect good.
Claims (5)
1. a Combined bone screw, it is characterized in that comprising inside connecting rod and outer sleeve body, inside connecting rod upper end is provided with the head of a nail, external screw thread is provided with outside outer sleeve body, inside connecting rod lower diameter is greater than upper diameter, inside connecting rod bottom circumference is evenly equipped with the connecting hole of at least two, outer sleeve body is provided with fixing hole with connecting hole opposite position, is provided with connecting pin in connecting hole and fixing hole.
2. Combined bone screw according to claim 1, is characterized in that described inside connecting rod bottom in the shape of a spiral, be evenly equipped with the connecting hole of six in circumference 720 degree.
3. Combined bone screw according to claim 1, is characterized in that described outer sleeve lower end is provided with tapping screw head.
4. Combined bone screw according to claim 1, is characterized in that the described head of a nail is provided with quincunx slotted eye.
5. Combined bone screw according to claim 1, it is characterized in that described connecting pin is hexagon socket head cap screw, connecting hole and fixing hole are screwed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420828308.0U CN204337030U (en) | 2014-12-24 | 2014-12-24 | A kind of Combined bone screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420828308.0U CN204337030U (en) | 2014-12-24 | 2014-12-24 | A kind of Combined bone screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204337030U true CN204337030U (en) | 2015-05-20 |
Family
ID=53220339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420828308.0U Active CN204337030U (en) | 2014-12-24 | 2014-12-24 | A kind of Combined bone screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204337030U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104490463A (en) * | 2014-12-24 | 2015-04-08 | 山东威高骨科材料股份有限公司 | Combined type bone screw |
| CN105342685A (en) * | 2015-11-19 | 2016-02-24 | 江苏百易得医疗科技有限公司 | Dynamic locking screw and dynamic locking bone plate system |
-
2014
- 2014-12-24 CN CN201420828308.0U patent/CN204337030U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104490463A (en) * | 2014-12-24 | 2015-04-08 | 山东威高骨科材料股份有限公司 | Combined type bone screw |
| CN105342685A (en) * | 2015-11-19 | 2016-02-24 | 江苏百易得医疗科技有限公司 | Dynamic locking screw and dynamic locking bone plate system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204337030U (en) | A kind of Combined bone screw | |
| CN104490463A (en) | Combined type bone screw | |
| CN207236837U (en) | Bone screw | |
| CN203291010U (en) | Bone nail with liftable nail cap | |
| CN205795787U (en) | A kind of internal fixation device for department of orthopaedics | |
| CN204765888U (en) | Metal meets bone screw | |
| CN205163229U (en) | Developments locking screw and dynamic locking bone plate system | |
| CN203328792U (en) | Novel medical bone screw | |
| CN204863443U (en) | Two cores meet bone screw | |
| CN203291013U (en) | Anti-breakage bone nail | |
| CN203067504U (en) | Height-adjustable fixed adjusting mechanism used for fixed connecting pieces | |
| CN201710410U (en) | Guider for orthopedic internal fixation | |
| CN203458463U (en) | Crushed bone fixator | |
| CN203417253U (en) | Locking structure of locking bone plate and locking screw | |
| CN203122577U (en) | Bone plate temporary fixing screw | |
| CN204500933U (en) | A kind of oppositely two screw thread Orthopedic screw nail | |
| CN202723971U (en) | Pedicle screw for spondylolisthesis restitution | |
| CN203493717U (en) | Scaphoid bone fixing trifin nail | |
| CN202908824U (en) | Portable external fixing frame for fracture locking | |
| CN103393461B (en) | The latch-up structure of locking bone fracture plate and lock screw | |
| CN202589640U (en) | Lock-including intramedullary nail extractor | |
| CN105342685A (en) | Dynamic locking screw and dynamic locking bone plate system | |
| CN208822942U (en) | A kind of fixed holder device of minimally invasive drift | |
| CN203873856U (en) | Inner ankle fixing steel plate system | |
| CN203369952U (en) | Metal straight bone fracture plate with supporting structures |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |