CN110477996A - It is a kind of improve distal femur osteotomy accuracy marrow in locating rod - Google Patents
It is a kind of improve distal femur osteotomy accuracy marrow in locating rod Download PDFInfo
- Publication number
- CN110477996A CN110477996A CN201910811669.1A CN201910811669A CN110477996A CN 110477996 A CN110477996 A CN 110477996A CN 201910811669 A CN201910811669 A CN 201910811669A CN 110477996 A CN110477996 A CN 110477996A
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- CN
- China
- Prior art keywords
- bar
- straight
- locating
- rod
- distal femur
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- 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.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1732—Guides or aligning means for drills, mills, pins or wires for bone breaking devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
-
- 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
Abstract
The present invention relates to the clinical operation technical field of knee prosthesis distal femur osteotomy, locating rod in specifically a kind of marrow for improving distal femur osteotomy accuracy, including handle, straight-bar and positioning head；One end of the straight-bar is fixedly connected with the lower part of handle, and the other end of straight-bar is provided with positioning head；The inside of the straight-bar offers sliding slot, the inner rotation of sliding slot is equipped with screw rod, and screw rod lower thread is connected with swivel nut, and the opening of straight-bar is symmetrically arranged with several locating plates, straight-bar is fixedly installed with hinged seat between two locating plates, and locating plate is hingedly mounted on hinged seat；The inside of the locating plate is hingedly equipped with connecting rod, and the other end of connecting rod and the bottom of swivel nut are hinged.The present invention controls locating rod end by increasing turntable in handle end, end is set freely to be divided into 4 parts of inside and outside front and back, to adjust position of the locating rod in femoral bone cavitas medullaris, ensure that locating rod can accurately and effectively be fixed on femoral bone cavitas medullaris center, to increase the accuracy of distal femur osteotomy, the postoperative satisfaction of patient is improved.
Description
Technical field
The present invention relates to the clinical operation technical field of knee prosthesis distal femur osteotomy, specifically a kind of raising femur
Locating rod in the marrow of osteotomy of distal accuracy.
Background technique
The coronal-plane line of force is always the hot spot in total knee replacement, and coronal-plane is neutral after Yao Shixian total knee arthroplasty
The position line of force, the mechanical axis osteotomy of femur and shin bone should be respectively perpendicular in art when row distal femur, proximal tibia osteotomy.Shin bone machine
Tool axis and anatomical axis overlapping can by position realization outside marrow, and femur mechanical axis be it is virtual, Yao Shixian is perpendicular to femur machine
The osteotomy of tool axis can pass through positioning system, computer assisted navigation in positioning system outside marrow, marrow in total knee arthroplasty
The technologies such as technology, individual patient osteotomy guide plate based on CT/MRI.But since inconvenient for operation, learning curve is long, expense
Height, time are long, increase the problems such as patient radiates, and majority doctors select the interior positioning of distal femur marrows to realize in clinic at present
Distal femur osteotomy.
Positioning osteotomy system will realize accurate distal femur osteotomy in distal femur marrow, need by locating rod in marrow with
Femur anatomical axis is precisely coincident, and the diameter of locating rod is mostly 8mm in the marrow of clinical application at present, length 20cm, 30cm,
Tri- kinds of specifications of 40cm, but researches show that the femoral bone cavitas medullaris length average out to 33cm of Chinese, the most narrow hats of femoral bone cavitas medullaris by Yan Hongwei etc.
Shape face diameter is 1.1cm, and sagittal plane diameter is 1.2cm, this result in femur marrow locating rod exist in art it is in partially or partially outer,
Partial is placed, bad so as to cause distal femur osteotomy, is caused the femoral prosthesis line of force bad, is needed and outer soft tissue
It loosens, the postoperative dissatisfaction of patient is caused to increase.And as the depth that locating rod enters increases the postoperative negative blood loss meeting of patient
Increase, the probability of fat embolism disease will increase.
Locating rod is first before posterior cruciate ligament of knee starting point in the condyle of femur inter-drain of 7-10mm in current distal femur marrow
Enter pulp cavity 5-7cm with 5/16 inch drill bit on line, locating rod in marrow is then inserted into femur isthmus, it is default then to remove marrow
The handle of position bar, reapposes in im rod and pulp cavity, mounting and positioning device on bar is set in marrow.
Positioning osteotomy is by preoperative measurement mechanical axis and to dissect axle clamp angle in distal femur marrow, passes through positioning in marrow in art
Bar is come what is determined, and since the anatomic form of femoral bone cavitas medullaris has differences, there are position inaccurates for existing locating rod, therefore,
For the above status, there is an urgent need to develop locating rods in a kind of marrow for improving distal femur osteotomy accuracy, to overcome current reality
Deficiency in the application of border.
Summary of the invention
It is above-mentioned to solve the purpose of the present invention is to provide locating rod in a kind of marrow for improving distal femur osteotomy accuracy
The problem of being proposed in background technique.
To achieve the above object, the invention provides the following technical scheme:
Locating rod in a kind of marrow improving distal femur osteotomy accuracy, including handle, straight-bar and positioning head；The one of the straight-bar
End is fixedly connected with the lower part of handle, and the other end of straight-bar is provided with positioning head；The inside of the straight-bar lower ending opening, straight-bar is perpendicular
Sliding slot is directly offered, the inner rotation of sliding slot is equipped with screw rod, and screw rod lower thread is connected with swivel nut, and swivel nut and sliding slot sliding connect
It connects；The opening of the straight-bar is symmetrically arranged with several locating plates, and straight-bar, which is located between two locating plates, to be fixedly installed with hingedly
Seat, locating plate are hingedly mounted on hinged seat；The inside of the locating plate is hingedly equipped with connecting rod, the other end of connecting rod with
The bottom of swivel nut is hinged, and pushes locating plate to swing out by connecting rod when swivel nut slide downward, and each locating plate is unfolded
At petal-shaped.
As a further solution of the present invention: the locating plate is symmetrically arranged with four.
As a further solution of the present invention: the inner rotation of the handle is equipped with turntable, and the upper end of the screw rod is passed through
It wears straight-bar and handle and is fixedly connected with turntable.
As a further solution of the present invention: the length of the straight-bar is 15cm, and the diameter of straight-bar is not more than 8mm.
As a further solution of the present invention: the length of the locating plate and connecting rod is respectively less than 1cm.
Compared with prior art, the beneficial effects of the present invention are: the present invention is by increasing turntable control positioning in handle end
Bar end allows end to be freely divided into 4 parts of inside and outside front and back, to adjust position of the locating rod in femoral bone cavitas medullaris, it is ensured that
Locating rod can be accurately and effectively fixed on inside femur, increase the postoperative satisfaction of patient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of locating rod in the marrow for improve distal femur osteotomy accuracy.
Fig. 2 is the cross-sectional view of locating rod in the marrow for improve distal femur osteotomy accuracy.
Fig. 3 is the bottom view of positioning head in locating rod in the marrow for improve distal femur osteotomy accuracy.
In figure: 1- handle, 2- turntable, 3- straight-bar, 4- positioning head, 5- sliding slot, 6- screw rod, 7- swivel nut, 8- locating plate, 9- hinge
Joint chair, 10- connecting rod.
Specific embodiment
The technical solution of the patent is explained in further detail With reference to embodiment.
The embodiment of this patent is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining this patent, and cannot be understood as a limitation of this patent.
In the description of this patent, it is to be understood that term " center ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on the figure
Orientation or positional relationship, be merely for convenience of description this patent and simplify description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to this patent.
In the description of this patent, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection ", " setting " shall be understood in a broad sense, for example, it may be being fixedly linked, being arranged, may be a detachable connection, set
It sets, or is integrally connected, is arranged.For the ordinary skill in the art, above-mentioned art can be understood as the case may be
The concrete meaning of language in this patent.
Please refer to Fig. 1~3, in the embodiment of the present invention, locating rod in a kind of marrow improving distal femur osteotomy accuracy, packet
Include handle 1, straight-bar 3 and positioning head 4；One end of the straight-bar 3 is fixedly connected with the lower part of handle 1, the other end setting of straight-bar 3
There is positioning head 4, by locating rod insertion pulp cavity to femur isthmus, straight-bar 3 is positioned by positioning head 4；
3 lower ending opening of straight-bar, the inner vertical of straight-bar 3 offer sliding slot 5, and the inner rotation of sliding slot 5 is equipped with screw rod 6,
6 lower thread of screw rod is connected with swivel nut 7, and swivel nut 7 is slidably connected with sliding slot 5, by the rotation band movable snail sleeve 7 of screw rod 6 in sliding slot 5
Inside slide up and down, sliding slot 5 is stretched out when swivel nut 7 slides down to distalmost end；If the opening of the straight-bar 3 is symmetrically arranged with
Dry locating plate 8, straight-bar 3 are fixedly installed with hinged seat 9 between two locating plates 8, and locating plate 8 is hingedly mounted on hinged seat 9
On, and can swing back and forth on hinged seat 9；The inside of the locating plate 8 is hingedly equipped with connecting rod 10, connecting rod 10 it is another
End is hinged with the bottom of swivel nut 7, pushes locating plate 8 to swing out by connecting rod 10 when 7 slide downward of swivel nut, to make respectively
A locating plate 8 is launched into petal-shaped, is accurately located straight-bar 3 and is mounted on inside pulp cavity；
Specifically, the locating plate 8 is symmetrically arranged with four in the present embodiment；
The inner rotation of the handle 1 is equipped with turntable 2, and the upper end of the screw rod 6 is through straight-bar 3 and handle 1 and solid with turntable 2
Fixed connection drives straight-bar 3 to rotate, to moving up and down for swivel nut 7 be adjusted, thus to locating plate 8 by rotary turnplate 2
Position be adjusted；
In order to ensure straight-bar 3 is inserted into femur, the length of the straight-bar 3 is 15cm, and the diameter of straight-bar 3 is not more than 8mm, simultaneously
Guarantee that the length of locating plate 8 and connecting rod 10 is respectively less than 1cm.
The present invention controls locating rod end by increasing turntable in handle end, and end is allow freely to be divided into inside and outside front and back 4
Part, to adjust position of the locating rod in femoral bone cavitas medullaris, it is ensured that locating rod can be accurately and effectively fixed on inside femur,
Increase the postoperative satisfaction of patient.
The above are merely the preferred embodiment of the present invention, it is noted that for those skilled in the art, not
Under the premise of being detached from present inventive concept, several modifications and improvements can also be made, these also should be considered as protection model of the invention
It encloses, these all will not influence the effect and patent practicability that the present invention is implemented.
Claims (5)
1. locating rod in the marrow of distal femur osteotomy accuracy in a kind of raising total knee replacement, including handle (1), straight-bar
(3) and positioning head (4), which is characterized in that one end of the straight-bar (3) is fixedly connected with the lower part of handle (1), straight-bar (3)
The other end is provided with positioning head (4)；Straight-bar (3) lower ending opening, the inner vertical of straight-bar (3) offer sliding slot (5), sliding slot
(5) inner rotation is equipped with screw rod (6), and screw rod (6) lower thread is connected with swivel nut (7), and swivel nut (7) and sliding slot (5) are slided
Connection；The opening of the straight-bar (3) is symmetrically arranged with several locating plates (8), and straight-bar (3) is located between two locating plates (8)
It is fixedly installed with hinged seat (9), locating plate (8) is hingedly mounted on hinged seat (9)；Hingedly pacify the inside of the locating plate (8)
Equipped with connecting rod (10), the bottom of the other end and swivel nut (7) of connecting rod (10) is hinged, and when swivel nut (7) slide downward passes through
Connecting rod (10) pushes locating plate (8) to swing out, and each locating plate (8) is made to be launched into petal-shaped.
2. locating rod in the marrow according to claim 1 for improving distal femur osteotomy accuracy, which is characterized in that described fixed
Bit slice (8) is symmetrically arranged with four.
3. locating rod in the marrow according to claim 1 for improving distal femur osteotomy accuracy, which is characterized in that described
The inner rotation of hand (1) is equipped with turntable (2), the upper end of the screw rod (6) through straight-bar (3) and handle (1) and with turntable (2)
It is fixedly connected.
4. locating rod in the marrow according to claim 1 to 3 for improving distal femur osteotomy accuracy, which is characterized in that
The length of the straight-bar (3) is 15cm, and the diameter of straight-bar (3) is not more than 8mm.
5. locating rod in the marrow according to claim 4 for improving distal femur osteotomy accuracy, which is characterized in that described fixed
The length of bit slice (8) and connecting rod (10) is respectively less than 1cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910811669.1A CN110477996A (en) | 2019-08-30 | 2019-08-30 | It is a kind of improve distal femur osteotomy accuracy marrow in locating rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910811669.1A CN110477996A (en) | 2019-08-30 | 2019-08-30 | It is a kind of improve distal femur osteotomy accuracy marrow in locating rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110477996A true CN110477996A (en) | 2019-11-22 |
Family
ID=68555205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910811669.1A Pending CN110477996A (en) | 2019-08-30 | 2019-08-30 | It is a kind of improve distal femur osteotomy accuracy marrow in locating rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110477996A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4236512A (en) * | 1978-02-12 | 1980-12-02 | Jacob Aginsky | Connector for fractured bones |
| CN101801286A (en) * | 2007-09-21 | 2010-08-11 | 德普伊国际有限公司 | Intramedullary rod instrument |
| CN203506854U (en) * | 2013-08-28 | 2014-04-02 | 李子剑 | Line of force alignment assist device for external positioning of tibia marrow |
| CN107981835A (en) * | 2018-01-16 | 2018-05-04 | 李霞 | A kind of gynemetrics's vaginal dilation device |
-
2019
- 2019-08-30 CN CN201910811669.1A patent/CN110477996A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4236512A (en) * | 1978-02-12 | 1980-12-02 | Jacob Aginsky | Connector for fractured bones |
| CN101801286A (en) * | 2007-09-21 | 2010-08-11 | 德普伊国际有限公司 | Intramedullary rod instrument |
| CN203506854U (en) * | 2013-08-28 | 2014-04-02 | 李子剑 | Line of force alignment assist device for external positioning of tibia marrow |
| CN107981835A (en) * | 2018-01-16 | 2018-05-04 | 李霞 | A kind of gynemetrics's vaginal dilation device |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191122 |
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| WD01 | Invention patent application deemed withdrawn after publication |