CN205144700U - Can effectively promote marrow internal fixation device of union - Google Patents
Can effectively promote marrow internal fixation device of union Download PDFInfo
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- CN205144700U CN205144700U CN201520902060.2U CN201520902060U CN205144700U CN 205144700 U CN205144700 U CN 205144700U CN 201520902060 U CN201520902060 U CN 201520902060U CN 205144700 U CN205144700 U CN 205144700U
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Abstract
The utility model provides a can effectively promote marrow internal fixation device of union, belongs to orthopedic medical equipment technical field for fix and promote the healing the fracture. Its technical scheme is: the utility model discloses a cylinder or oval barrel, the barrel is connected to form by a plurality of short barrels and stand, also has the pull rod between adjacent short barrel. This kind of structure can make the whole elastic modulus of barrel better, and internal fixation intensity obtains the reinforcing, can prevent the condition of fracture, the rupture of stress nature etc. Simultaneously, the permissible bone trabecula of this kind of structure is grown into along the space connection of stand between the short barrel and pull rod, reaches the inside and outside poroma of marrow and grows simultaneously, shortens the union time, reduces the various complication of fracture and operation. The utility model discloses a reduction of the fracture fixation technology's innovation, solved old person osteoporosis nature fracture treatment after, the cancellous bone healing is relatively poor, influence skeleton healing intensity, sometimes probably leads to the fracture to postpone the healing and reaches the hard nut to crack of fracturing again, has apparent economy and social.
Description
Technical field
This utility model relates to and to be a kind ofly fixed and the Medullary fixation device of Promotive union fracture, belongs to orthopedic medical device technical field.
Background technology
Long bone fracture is clinical common fracture, existing many employing open reduction Plate internal fixiation and intramedullary pin internal fixtion.Traditional Plate internal fixiation long incision, wound are large, need incised tissue to appear fracture area in treatment, then carry out reduction fixation, this method is large to fracture soft tissue injury around, intraoperative hemorrhage is many, Accessory injury is many, also need secondary to take out, patient's postoperative recovery time is long.Intramedullary pin internal fixtion needs to carry out expansion marrow, the corresponding corresponding complication bringing expansion marrow, such as fat embolism match, pulmonary infarction etc.More general impact is, fracture inside-fixture insert after due to the volume occupation time process of inner matter, destroy broken ends of fractured bone bone trabecula, affect the bone trabecular growth of two broken ends of fractured bone and successional recovery.In skeleton, bone trabecula has important function, and it connects surrounding bone cortex, enhances skeletal bulk strength; In addition, it forms important mechanotransduction and transformation function in pulp cavity, can make stressed more balanced, reasonable when cortical bone bears various load, and local excessive loads is conducted, is dispersed to other positions.For near end of thighbone, there is the collodiaphyseal angle of about 110 ° ~ 140 ° between neck of femur and femoral shaft, between neck of femur axis and femur two condyle, line forms anteversion of femoral neck, and therefore neck of femur bears pressure, tension force and shearing.Have the shelf structure that spreads out of compression trabeculae and tension force bone trabecula System's composition in neck of femur, transform its moment of flexure of bearing and moment of torsion and conduct to backbone, dispersion local stress, reduces risk of bone fracture; If near end of thighbone does not exist such shelf structure that spreads out, when femoral shaft neck of femur under violence effect can bear larger moment of flexure and moment of torsion, the risk that fracture occurs is higher.Bone trabecula can have blood fortune system in efficient recovery marrow after rebuilding, contribute to the healing of spongy bone and cortical bone.Have no progeny as do not recovered in trabecular bone structure, inside and outside fracture healing process the marrow being invaded by pathogen, growth of spur is unbalanced, especially senile osteoporosis fracture, after possible cortical bone healing, spongy bone healing is poor, affect bone healing intensity and the conduction to normal duty, sometimes can cause fracture delayed union, disunion or refracture.And the proximal-distal of long bone Medullary fixation system is thicker, trabecular bone structure is destroyed more serious, inserts occupation time process more obviously, affects bone trabecula and grow into, and is unfavorable for that later stage bony structures is recovered.
In fractures, also will consider how to carry out resetting and fixing according to skeletal structure, this will directly have influence on the recovery degree of fracture site, become the key of operation success or failure.Skeleton makes every effort to reach a kind of optimum structure in growth course, and namely the form of skeleton and material are by the regulation and control of personal activity level, make it enough to bear mechanical load, but do not increase the burden of metabolism transhipment.According to above-mentioned principle, fracture moulds the Changing Pattern display of process again, and if any displacement after fracture, will have obvious callus formation in recessed side, the direction of transfer along compressive stress arranges by its interior bone girder, and will have the absorption of bone in convex side.
At present, fracture of femoral neck, intertrochanteric fracture, Methods for Distal Femoral Fractures, Proximal tibia fracture are clinical common injury, need to carry out to comprise Gama nail (Gamma), hollow (pulling force) screw etc. in the treatment fixing, its major complications comprise nonunion, delayed union, inside-fixture loosen, fracture.
Along with the development of orthopaedics Internal fixation technology, be necessary very much to design new fixture, make fractures under the guidance of biology and biomechanical principle, make the cortex of fracture and main bone trabecula grow reconstruction simultaneously, realize fracture inside and outside marrow and heal simultaneously.Such can accelerating bone healing speed, improve healing of fracture and intensity, reduce nonunion, the incidence rate of the complication such as delayed union, inside-fixture loosen, fracture, to improve therapeutic effect, alleviate the misery of patient.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of Medullary fixation device that can promote union of fracture, it is theoretical that this Medullary fixation device make use of bionical internal fixtion, make fracture recover to follow conduction and the load character of fracture self, fractures can be made to reach satisfied reset and healing effect.
The technical scheme solved the problems of the technologies described above is:
A kind of Medullary fixation device that can promote union of fracture, it is a cylinder or elliptical cylinder, cylinder or elliptical cylinder are upright or conformal with skeleton local curvature oblique cylindrical shell, cylindrical shell is connected to form by multiple short cylinder and column, multiple short cylinder is along central axis order arrangement up and down, column is had to be connected between adjacent short cylinder, the top and bottom of column are connected with short cylinder circumferential wall upper surface, below with short cylinder circumferential wall lower surface, top respectively, the centerline axis parallel of column and cylinder or elliptical cylinder, multiple column is along the distribution of cylinder or elliptical cylinder.
The above-mentioned Medullary fixation device that can promote union of fracture, pull bar is also had to connect between described adjacent column, pull bar is monocline pull bar or the brace that intersects, and the two ends of pull bar are connected with short cylinder circumferential wall upper surface, below with short cylinder circumferential wall lower surface, top respectively.
The above-mentioned Medullary fixation device that can promote union of fracture, described short cylinder is 2-10, and the column between adjacent short cylinder is 2-50 root.
The above-mentioned Medullary fixation device that can promote union of fracture, the circumferential inner wall of described short cylinder bottom has screw thread, and the nose threads of the handle of screw thread and withdrawing device matches.
The beneficial effects of the utility model are:
This utility model is cylinder or elliptical cylinder, cylindrical shell is connected to form by multiple short cylinder and column, pull bar is also had between adjacent short cylinder, such a structure increases the strength and stability of cylindrical shell, cylindrical shell integral, flexible modulus can be made better, internal fixtion intensity is enhanced, and can prevent fracture, stress fractures etc. situation; Meanwhile, this structure can allow bone trabecula to be connected along the column between short cylinder with the space of pull bar to grow into, reach external callus in marrow and grow simultaneously, shorten healing time, recover physiological mechanics characteristic, reduce the various complication of fracture and operation; The screw thread design of end can facilitate operating theatre staff to complete to insert and take out after union of fracture.
It is theoretical that this utility model make use of bionical internal fixtion, adopt the Novel bionic Medullary fixation device more meeting instrument of skeleton anatomical structure and biomethanics structure characteristic, make fracture recover to follow conduction and the load character of fracture self, fractures can be made to reach satisfied reset and healing effect.
This utility model is the innovation of reduction of the fracture technique for fixing, and solve especially after senile osteoporosis fractures, spongy bone healing is poor, affects bone healing intensity, sometimes may cause the hard nut to crack of fracture delayed union and refracture.
Micropore of the present utility model bionical fracture Medullary fixation device is applicable to whole body long bone fracture internal fixation treatment, be particularly useful for the complicated trabecular bone structure fracture of juxtra-articular, in conjunction with the support of less invasive techniques and image navigation technology, there is good expection, significant economic and social benefit can be obtained.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1.
In figure, labelling is as follows: short cylinder 1, column 2, pull bar 3, screw thread 4.
Detailed description of the invention
This utility model is a cylinder or elliptical cylinder, cylinder or elliptical cylinder are isometrical cylindrical shell, the diameter of cylindrical shell is identical with the intramedullary pin used in general operation with length, and can also be waney cylindrical shell, cylindrical shell be upright or conformal with skeleton local curvature oblique cylindrical shell.
Show in figure, cylindrical shell of the present utility model is connected to form by multiple short cylinder 1 and column 2.The diameter of multiple short cylinder 1 is identical, and multiple short cylinder 1 is along central axis order arrangement up and down, and the quantity of short cylinder 1 is 2-10, and the Medullary fixation device of composition different length, can select the Medullary fixation device of appropriate length according to actual needs during use.
Show in figure, column 2 is had to be connected between adjacent short cylinder 1, the top and bottom of column 2 are connected with below short cylinder 1 circumferential wall upper surface with top short cylinder 1 circumferential wall lower surface respectively, the centerline axis parallel of column 2 and cylinder or elliptical cylinder, multiple column 2 is uniform along cylinder or elliptical cylinder.Column 2 between adjacent short cylinder 1 is 2-50 root.
Show in figure, also have pull bar 3 to connect between adjacent column 2, pull bar 3 is monocline pull bar or the brace that intersects, and the two ends of pull bar 3 are connected with below short cylinder 1 circumferential wall upper surface with top short cylinder 1 circumferential wall lower surface respectively.Monocline pull bar or the brace that intersects add the strength and stability of cylindrical shell, and cylindrical shell integral, flexible modulus can be made better, and internal fixtion intensity is enhanced, and can prevent fracture, stress fractures etc. situation.
This utility model adopts the syndeton of the column 2 between short cylinder 1 and pull bar 3 that bone trabecula can be allowed to be connected with the space of pull bar along the column between short cylinder and grows into, reach external callus in marrow to grow simultaneously, shorten healing time, reduce the various complication of fracture and operation.Adopt 2-10 root post 2 and the less Medullary fixation device of oblique drawbar 3 to be applicable to elderly population, be applicable to the large crowd of young and middle-aged labor intensity more than 10 root posts 2 and the more Medullary fixation device of oblique drawbar 3.
Show in figure, the circumferential inner wall of short cylinder 1 bottom has screw thread 4, and screw thread 4 matches with the nose threads of the handle of withdrawing device, is convenient to operating theatre staff and completes and insert and take out after union of fracture.
The column 2 of short cylinder 1 of the present utility model and connection, pull bar 3 can adopt 3D printing technique to make or adopt integrally casting to complete.
It is theoretical that this utility model make use of bionical internal fixtion, adopt the Novel bionic Medullary fixation device more meeting instrument of skeleton anatomical structure especially biomethanics structure characteristic, make fracture recover to follow conduction and the load character of fracture self, fractures can be made to reach satisfied reset and healing effect.
This utility model is the innovation of reduction of the fracture technique for fixing, and solve especially after senile osteoporosis fractures, spongy bone healing is poor, affects bone healing intensity, sometimes may cause the hard nut to crack of fracture delayed union and refracture.
Micropore of the present utility model bionical fracture Medullary fixation device is applicable to whole body long bone fracture internal fixation treatment, be particularly useful for the complicated trabecular bone structure fracture of juxtra-articular, in conjunction with the support of less invasive techniques and image navigation technology, there is good expection, significant economic and social benefit can be obtained.
Claims (4)
1. one kind effectively can promote the Medullary fixation device of union of fracture, it is characterized in that: it is a cylinder or elliptical cylinder, cylinder or elliptical cylinder are upright or conformal with skeleton local curvature oblique cylindrical shell, cylindrical shell is connected to form by multiple short cylinder (1) and column (2), multiple short cylinder (1) is along central axis order arrangement up and down, column (2) is had to be connected between adjacent short cylinder (1), the top and bottom of column (2) are connected with below short cylinder (1) circumferential wall upper surface with top short cylinder (1) circumferential wall lower surface respectively, the centerline axis parallel of column (2) and cylinder or elliptical cylinder, multiple column (2) is uniform along cylinder or elliptical cylinder.
2. the Medullary fixation device that can promote union of fracture according to claim 1, it is characterized in that: between described adjacent column (2), also have pull bar (3) to connect, pull bar (3) is monocline pull bar or the brace that intersects, and the two ends of pull bar (3) are connected with below short cylinder (1) circumferential wall upper surface with top short cylinder (1) circumferential wall lower surface respectively.
3. the Medullary fixation device that can promote union of fracture according to claim 2, is characterized in that: described short cylinder (1) is 2-10, and the column (2) between adjacent short cylinder (1) is 2-50 root.
4. the Medullary fixation device that can promote union of fracture according to claim 3, is characterized in that: the circumferential inner wall of described short cylinder (1) bottom has screw thread (4), and screw thread (4) matches with the nose threads of the handle of withdrawing device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520902060.2U CN205144700U (en) | 2015-11-13 | 2015-11-13 | Can effectively promote marrow internal fixation device of union |
| PCT/CN2016/077139 WO2017080131A1 (en) | 2015-11-13 | 2016-03-23 | Intramedullary fixing device that can effectively promote fracture healing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520902060.2U CN205144700U (en) | 2015-11-13 | 2015-11-13 | Can effectively promote marrow internal fixation device of union |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205144700U true CN205144700U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520902060.2U Expired - Fee Related CN205144700U (en) | 2015-11-13 | 2015-11-13 | Can effectively promote marrow internal fixation device of union |
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| Country | Link |
|---|---|
| CN (1) | CN205144700U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105232136A (en) * | 2015-11-13 | 2016-01-13 | 陈伟 | Intramedullary fixing device capable of effectively promoting fracture healing |
| CN112807066A (en) * | 2020-12-30 | 2021-05-18 | 杨润松 | Combined intramedullary and extramedullary fixing device for radius head reconstruction and reduction |
-
2015
- 2015-11-13 CN CN201520902060.2U patent/CN205144700U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105232136A (en) * | 2015-11-13 | 2016-01-13 | 陈伟 | Intramedullary fixing device capable of effectively promoting fracture healing |
| CN112807066A (en) * | 2020-12-30 | 2021-05-18 | 杨润松 | Combined intramedullary and extramedullary fixing device for radius head reconstruction and reduction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20191113 |