CN110151288A - Shin bone, femur, the telescopic intramedullary nail of humerus Limb lengthening - Google Patents
Shin bone, femur, the telescopic intramedullary nail of humerus Limb lengthening Download PDFInfo
- Publication number
- CN110151288A CN110151288A CN201910554214.6A CN201910554214A CN110151288A CN 110151288 A CN110151288 A CN 110151288A CN 201910554214 A CN201910554214 A CN 201910554214A CN 110151288 A CN110151288 A CN 110151288A
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- Prior art keywords
- telescopic rod
- angular wheel
- telescopic
- locating piece
- intramedullary nail
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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
- A61B17/56—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
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7216—Intramedullary pins, nails or other devices for bone lengthening or compression
- A61B17/7225—Intramedullary pins, nails or other devices for bone lengthening or compression for bone compression
Abstract
The invention discloses a kind of shin bones, femur, the telescopic intramedullary nail device of humerus Limb lengthening, the first telescopic rod and the second telescopic rod including socket, and the driving assembly that the first telescopic rod of driving is axially moveable relative to the second telescopic rod, when the telescopic intramedullary nail is squeezed into sclerotin, and when the both ends of the scalable intramedullary nail being separately fixed on the both ends knochenbruch of femur respectively by fixed pinning, the scalable intramedullary nail is driven to be stretched in sclerotin by the driving assembly, to stimulate bone tissue growth, promote the healing of fracture, and the entire therapeutic process of patient is not necessarily to support frame at all, reduce the risk of infection and complication.
Description
Technical field
The present invention relates to orthopedic medical device fields, and in particular to a kind of shin bone, femur, the telescopic marrow of humerus Limb lengthening
Interior nail.
Background technique
Long bone large segmental bone defect is that fracture of finger is unable to self-heal or is only capable of the bone defect of regeneration 10%, generally involves length
2-3 times of bone diameter.Large segmental bone defect is usually caused by reasons such as High energy trauma, infection, tumours, be often accompanied by limb shortening,
Deformity, osteomyelitis, muscular atrophy and adjacent joints are stiff, and repairing and treating is always one of the biggest problem of field of orthopaedics.According to
Statistics display is that patient most often receives one of preceding 50 kinds of treatments in the operation of German bone collection；Bone collection need to be carried out every year in the U.S.
The patient of operation about 800,000；Annual in China has just been more than singly 3,000,000 because wound needs the operation of row bone collection；Large segmental bone defect
It gives patient and brings huge physical and mental injury and financial burden, therefore how to solve this problem and have become the important of field of orthopaedics
Project.
At present the main method of clinical treatment long bone large segmental bone defect have autologous bone transplanting, Masquelet technology and
Ilizarov technology.Autologous bone transplanting has optimal osteoacusis, self-bone grafting and ostosis effect, is the mark for treating bone defect
It is quasi-.However self, bone amount is limited, bone strength is not good enough, it is difficult to meet the needs of large segmental bone defect.Although the bone collection of anastomosis of blood vessel
(such as fibula, ilium, rib cage) is also the effective ways for the treatment of large segmental bone defect, but the operation wound is big, district complication
More, bone graft completes moulding and the time of thickening is long, and patient is unable to early loading, and stress fracture, flesh easily occurs in the later period
Meat atrophy etc..In addition, the technological learning curve is long, patient is required relatively high, clinic cannot be widely used in, therefore not
It is the main stream approach for treating large segmental bone defect.The appearance of Masquelet technology provides a kind of new way for the treatment of large segmental bone defect
Diameter.The technology is the autologous bone transplanting treatment section bone defect using film auxiliary.The technology is specifically divided into two stages.The
One stage: thoroughly clear rear implantation PMMA bone cement spacer is fixed using interior fixation or outer fixation, is closed the surface of a wound, formation
Induce film.Second stage: cutting induction film after 6-8w, remove bone cement spacer, get through pulp cavity, and self pine is filled in film
Matter bone, then closure induces film and notch.The induction film, which not only has, to be avoided transplanting bone resorption, maintains bone graft position and prevention
The effects of soft tissue invades, and can secrete growth factor and bone-inducing factor and promote bone tissue growth, as blood vessel endothelial factor,
TGF-β 1, BMP-2 etc. [12].Although multinomial clinical research proves Masquelet technology, treatment bone defect can obtain certain face
Bed effect, but there is also significant limitations.The maximum defect of the technology be to need during repairing bone defect it is a large amount of from
Body bone collection increases operation wound and district complication；And the technology cannot effectively correct limb shortening and the line of force, such as
Fruit merges large area skin soft tissue defects and also needs to combine micro- flap technology.In addition, patient is unable to early loading after surgery
It takes exercise, is easy to appear the complication such as stress fracture, bone resorption and bone nonunion, and this method needs to carry out twice even repeatedly
Operation, length of patient stay is long, it is high to spend.
Existing limb lengthening technology is usually applied tension-stress Ilizarov principle, wherein bearing stable at a slow speed
Activate to the being metabolized property of living tissue of stretching.Therefore, after forming spatium interosseum and the gap of drawing-off immediately, so that it may form new bone
To realize the increase of length.Existing machinery equipment for limb lengthening include pass through adjustable strut connect and using line,
The form that pin or screw are percutaneously connected to bone is the external fixator of ring.Intramedullary nail is in the widely used fracture marrow of one kind
Fixed device is a support rod with some strength, and can have certain dissection radian.For long bone bone
Folding, intramedullary nail is more in line with the mechanical characteristic of bone because of it, frequently as the first choice for the treatment of, initial intramedullary nail rely primarily on it is main nail with
The frictional force control fracture site of pulp cavity is stablized, this fixed form can only fight answering for bending load generation to a certain extent
Power, and the stress generated for axial load and spin load cannot then provide enough confrontation, often result in the short of fracture site
Contracting and rotation displacement.
Summary of the invention
For the above technical problems, the present invention provides a kind of shin bone, femur, humerus Limb lengthening in telescopic marrow
Nail.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of shin bone, femur, the telescopic intramedullary nail of humerus Limb lengthening, including the first telescopic rod being mutually socketed and
Two telescopic rods, and the driving assembly that driving first telescopic rod is axially moveable relative to second telescopic rod, it is described
Driving assembly setting is connected on second telescopic rod, and with first telescopic rod.
Wherein, the driving component includes: screw rod, the first angular wheel, the second angular wheel and operating stick, wherein
One end of the screw rod is fixed on first telescopic rod bottom, and the other end axially extends flexible into described second
In rod cavity body；First angular wheel is arranged in the second telescopic rod cavity, and is set on the screw rod；Described
The setting of two angular wheels is engaged in the second telescopic rod cavity, and with first angular wheel；The company of the operating stick
End and the second angular wheel shaft hole matching are connect, operating side is extended described second through the cavity wall of second telescopic rod and stretched
Contracting rod cavity is external.
The beneficial effects of the present invention are: the invention discloses a kind of shin bone, femur, humerus Limb lengthenings in telescopic marrow
Nail, driven by driving assembly the first telescopic rod of the telescopic intramedullary nail and the second telescopic rod carried out in sclerotin stretching, extension or
It shrinks, to stimulate bone tissue growth, promotes the healing of fracture, and patient can just be detached from support frame early stage, reduce infection
With the risk of complication.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar appended drawing reference.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is that the structure of an embodiment of a kind of shin bone of the invention, femur, the telescopic intramedullary nail of humerus Limb lengthening is shown
It is intended to；
Fig. 2 be Fig. 1 in telescopic intramedullary nail the first telescopic rod under the driving of driving assembly relative to the second telescopic rod
The schematic diagram moved down；
Fig. 3 is that the pedestal of the first angular wheel in telescopic intramedullary nail in Fig. 1 is matched with locating piece in the second telescopic rod
An embodiment schematic diagram；
Fig. 4 is the schematic diagram of an embodiment of the positioning fastener in Fig. 1 on the first angular wheel pedestal；
Fig. 5 is that the pedestal of the first angular wheel in telescopic intramedullary nail in Fig. 1 is matched with locating piece in the second telescopic rod
Another embodiment schematic diagram；
Fig. 6 is the structure of the another embodiment of a kind of shin bone of the invention, femur, the telescopic intramedullary nail of humerus Limb lengthening
Schematic diagram.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Shin bone of the invention, femur, the telescopic intramedullary nail of humerus Limb lengthening pass through setting mutually socket and can be along axial directions
The first telescopic rod 111 and the second telescopic rod 112 and driving assembly of relative movement, thus when the telescopic intramedullary nail is squeezed into
After in sclerotin, 111 top of the first telescopic rod and the second telescopic rod bottom end can be separately fixed at bone respectively by fixed pinning 13
On the both ends knochenbruch of matter (shin bone/femur/humerus), then when patient sits down/lies low, i.e. shin bone, femur/humerus almost horizontal
When state, drive first telescopic rod 111 relative to 112 edge of the second telescopic rod by driving assembly under outer active force auxiliary
Axis is mobile (can certainly be that the second telescopic rod of driving is axially moveable relative to the first telescopic rod, principle is identical), that is, drives
It moves the telescopic intramedullary nail to be stretched or shunk in sclerotin, to stimulate bone tissue growth, promotes the healing of fracture.It ties below
Specific embodiment is closed to be described in detail.
Embodiment one
It is an embodiment of a kind of shin bone of the invention, femur, the telescopic intramedullary nail of humerus Limb lengthening referring to Fig. 1
Structural schematic diagram, specifically, the telescopic intramedullary nail device of the present embodiment include that the first telescopic rod 111 and second being arranged stretches
Bar 112, and for driving first telescopic rod to be axially moveable relative to the second telescopic rod (along axial direction in referring to Fig. 1 and Fig. 2
Move up or down) driving assembly, wherein 111 inner sleeve of the first telescopic rod in the cavity of second telescopic rod 112, drive
Dynamic component is fixed on second telescopic rod 112, and is connected with first telescopic rod 111.
In one embodiment, which includes that one end is arranged in 111 bottom of the first telescopic rod, and the other end is along axis
To extending into the intracorporal screw rod 131 of 112 chamber of the second telescopic rod；Be arranged in 112 cavity of the second telescopic rod, and with the screw rod
131 the first angular wheels 132 being threadedly coupled；Be arranged in second telescopic rod 112, and with 132 phase of the first angular wheel
Second angular wheel 133 of engagement；And connecting pin and 133 shaft hole matching of the second angular wheel, operating side through this second
112 cavity wall of telescopic rod simultaneously extends the operating stick 134 outside 112 cavity of the second telescopic rod.
In the present embodiment, by being arranged the operating stick 134 on the second telescopic rod 112, and through the second telescopic rod out
On 112, so that outer active force can be applied to the operating stick 134 for being pierced by limbs when the telescopic intramedullary nail is installed in sclerotin,
To drive the operating stick 134 to rotate；Due to 133 shaft hole matching of the operating stick 1314 and the second angular wheel, the i.e. operating stick 134
For the shaft of second angular wheel 133, therefore, when driving the operating stick 134 rotation, which drives the second cone
Shape gear 133 rotates；Since the second angular wheel 133 is meshed with the first angular wheel 132, the first angular wheel 132
It is rotated in 112 cavity of the second telescopic rod under the drive of the second angular wheel 133；Since first angular wheel 132 is set
It sets in 112 cavity of the second telescopic rod, and be threadedly engaged with screw rod 131, therefore, when driving, first angular wheel 132 exists
In second telescopic rod, 112 cavity when rotation, which is axially moveable relative to second telescopic rod 112, certainly, with
Fixed the first telescopic rod 111 together of the screw rod 131 is also under the drive of the screw rod 131 relative to 112 edge of the second telescopic rod
Axial movement (such as Fig. 1 and Fig. 2, in the first telescopic rod relative to the second telescopic rod upwards/lower movement).
It, in one embodiment, can be by being disposed radially one in 112 cavity of the second telescopic rod referring to Fig. 3
While locating piece 112-1 is used to support first angular wheel 131, the position of first angular wheel 132 is also limited, is avoided
First angular wheel moves up and down, and the pedestal 132-1 of first angular wheel 132 runs through locating piece 112-1, and the bottom
Seat the end 132-1 close to the position of locating piece 112-1 it is circumferentially arranged have positioning fastener 132-2, thus the positioning fastener
The large end face of 132-2 and first angular wheel 132 forms a locating slot, and the locating slot and locating piece 112-1 match
It closes.
In the present embodiment, the first angular wheel is supported by the locating piece, and on the pedestal of first angular wheel
Positioning fastener is set and forms the locating slot matched with the locating piece with large end face (i.e. the large end face of angular wheel), i.e., by being somebody's turn to do
The cooperation of locating piece and locating slot limits the position of first angular wheel in the second telescopic rod, and passes through locating piece and positioning
It is combined into the first angular wheel matching between slot and provides space relative to second telescopic rod rotation, specifically, the locating piece
112-1 is one with through-hole, and has certain thickness first disk, and the pedestal of the through-hole and first angular wheel matches
It closes；And the positioning fastener is the second disk or at least two convex blocks that are circumferentially uniformly arranged along pedestal, referring to fig. 4；Referring to figure
5, it is not that the locating piece is fastened on to the positioning fastener and the first angular wheel large end face institute shape in another embodiment
At locating slot in, but open up groove and positioning fastener 132-2 along axial direction on the hole wall of the through-hole in locating piece 112-1
It matches, certainly, the positioning fastener can also be not arranged in the pedestal bottom end at this time, but be arranged in other positions, such as pedestal
Middle part.
Certainly, in the present embodiment, height of the locating piece apart from two telescopic rod bottom of ground is greater than the length of screw thread on screw rod
Degree；And the axis perpendicular of the axis of second angular wheel and the first angular wheel.
Further, in this embodiment the bottom end outer wall of first telescopic rod 111 is circumferentially arranged at least one elasticity
Slide post, the circumferentially arranged axial trajectory for thering is at least one to slide up and down for elastic slide post of the inner wall of the second telescopic rod 112,
And under outer active force auxiliary, when the first telescopic rod of driving of driving assembly is upward/lower mobile relative to second telescopic rod,
The telescopic intramedullary nail stretching, extension/contraction.
Further, referring to Fig. 6, it can also be arranged one in second telescopic rod and be used to support second angular wheel
Circular casing, which extends from the second telescopic rod cavity inner wall to the second angular wheel pedestal direction, and is set in
On the pedestal of second angular wheel, certainly, the diameter of the circular casing is greater than the size of the operating stick；
Further, also one protective case can be set corresponding to the position of operating stick on second telescopic rod, specifically
The outer wall on ground, the protective case from second telescopic rod is axially extending along operating stick；
Further, also corresponding scale mark can be set in the end of the operating stick, to prompt turnning circle pair
The distance for answering screw rod mobile, the corresponding relationship can be converted to obtain according to the parameter and screw flight length of angular wheel.
Above-mentioned first angular wheel and the second angular wheel in the present embodiment are miniature gears, or use 3D printing
Made of technology, it can be used alone, it can also be with the telescopic outer fixation of existing various shin bones, femur and humerus Limb lengthening
Frame or outer support frame are used cooperatively, and such as fixation hole can be respectively set close to the position of top and bottom in intramedullary nail respectively, thus
By the way that the both ends of fixing screws are separately positioned on the fixation hole and outer support frame or external fixing rack, certainly, the external fixing rack
Or outer support frame can also be removed after intramedullary nail is set.
The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；Although referring to aforementioned each reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified, or equivalent substitution of some or all of the technical features；And
These are modified or replaceed, the range for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution,
It should all cover within the scope of the claims and the description of the invention.
Claims (4)
1. the telescopic intramedullary nail of a kind of shin bone, femur, humerus Limb lengthening, which is characterized in that first including being mutually socketed stretches
Contracting bar (111) and the second telescopic rod (112), and driving first telescopic rod (111) is relative to second telescopic rod edge
The driving assembly of axial movement, the driving component be arranged on second telescopic rod (112), and with first telescopic rod
(111) it is connected.
2. telescopic intramedullary nail according to claim 1, which is characterized in that the driving component includes: screw rod (131),
First angular wheel (132), the second angular wheel (133) and operating stick (134), wherein
One end of the screw rod (131) is fixed on the first telescopic rod (111) bottom, and the other end is axially extended into described
In two telescopic rods (112) cavity；First angular wheel (132) is arranged in the second telescopic rod (112) cavity, and covers
It is located on the screw rod (131)；Second angular wheel (133) is arranged in the second telescopic rod (112) cavity, and with
First angular wheel (132) engagement；The connecting pin of the operating stick (134) and the second angular wheel (133) axis hole
Cooperation, operating side are extended outside the second telescopic rod (112) cavity through the cavity wall of second telescopic rod (112).
3. telescopic intramedullary nail according to claim 2, which is characterized in that edge in the second telescopic rod (112) cavity
It is arranged radially a locating piece (112-1) for being used to support first angular wheel (132), first angular wheel
(132) pedestal (132-1) runs through the locating piece (112-1), and the pedestal (132-1) of first angular wheel (132)
End has positioning fastener (132-2) close to the position of the locating piece (112-1) is circumferentially arranged, the positioning fastener (132-
2) locating slot matched with the locating piece (112-1) is formed with the large end face of first angular wheel (132), and described
First angular wheel (132) can be rotated relative to the locating piece (112-1)；
When through operating stick (134) described in outer effect power drive, the operating stick (134) drives second angular wheel
(133) when rotating, second angular wheel (133) drives first angular wheel (132) opposite in the locating slot
It is rotated in second locating piece (112-1) and the screw rod (131), so that the screw rod (131) drives described first
Telescopic rod (111) is mobile relative to second telescopic rod (112), and main nail in the flexible marrow formula is made to be stretched or be shunk.
4. telescopic intramedullary nail according to claim 1, it is characterised in that, edge in the second telescopic rod (112) cavity
It is arranged radially a locating piece (112-1) for being used to support first angular wheel (132), the locating piece (112-1) is right
The position of the pedestal (132-1) of first angular wheel (132) described in Ying Yu offers through-hole, and the hole wall of the through-hole is circumferentially
It is provided with card slot, and the pedestal (132-1) of first angular wheel (132) runs through the through-hole of the locating piece (112-1), institute
State it is circumferentially arranged on pedestal (132-1) have positioning fastener (132-2), the positioning fastener (132-2) and locating piece (112-1)
On card slot match, and the positioning fastener (132-2) can in the card slot relative to the locating piece (112-1) turn
It is dynamic；
When through operating stick (134) described in outer effect power drive, the operating stick (134) drives second angular wheel
(133) when rotating, second angular wheel (133) drives the positioning fastener (132-2) of first angular wheel (132) to exist
It is rotated in the card slot relative to the screw rod (131), so that the screw rod (131) drives first telescopic rod
(111) mobile relative to second telescopic rod (112), so that main nail in the flexible marrow formula is stretched or is shunk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910554214.6A CN110151288A (en) | 2019-06-25 | 2019-06-25 | Shin bone, femur, the telescopic intramedullary nail of humerus Limb lengthening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910554214.6A CN110151288A (en) | 2019-06-25 | 2019-06-25 | Shin bone, femur, the telescopic intramedullary nail of humerus Limb lengthening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110151288A true CN110151288A (en) | 2019-08-23 |
Family
ID=67625547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910554214.6A Pending CN110151288A (en) | 2019-06-25 | 2019-06-25 | Shin bone, femur, the telescopic intramedullary nail of humerus Limb lengthening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110151288A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112057131A (en) * | 2020-08-24 | 2020-12-11 | 谭新宇 | Tibia intramedullary rotating reamer system replacing transverse bone moving |
| CN113974809A (en) * | 2021-12-15 | 2022-01-28 | 河北医科大学第三医院 | Tibia intramedullary nail |
| CN116035774A (en) * | 2023-03-07 | 2023-05-02 | 北京爱康宜诚医疗器材有限公司 | Long bone prosthesis |
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| CN104173097A (en) * | 2014-07-21 | 2014-12-03 | 阮玉德 | Intramedullary nail |
| TW201511731A (en) * | 2013-09-18 | 2015-04-01 | Hung-Fa Chou | Device and method of using intramedullary nail to extend bone length |
| CN107960345A (en) * | 2018-01-08 | 2018-04-27 | 盐城市祥昇农业科技有限公司 | A kind of poultry hopper of lift |
| CN210990658U (en) * | 2019-06-25 | 2020-07-14 | 重庆医科大学附属永川医院 | Telescopic intramedullary nail for lengthening tibia, femur and humerus |
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| TW201511731A (en) * | 2013-09-18 | 2015-04-01 | Hung-Fa Chou | Device and method of using intramedullary nail to extend bone length |
| CN104173097A (en) * | 2014-07-21 | 2014-12-03 | 阮玉德 | Intramedullary nail |
| CN107960345A (en) * | 2018-01-08 | 2018-04-27 | 盐城市祥昇农业科技有限公司 | A kind of poultry hopper of lift |
| CN210990658U (en) * | 2019-06-25 | 2020-07-14 | 重庆医科大学附属永川医院 | Telescopic intramedullary nail for lengthening tibia, femur and humerus |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112057131A (en) * | 2020-08-24 | 2020-12-11 | 谭新宇 | Tibia intramedullary rotating reamer system replacing transverse bone moving |
| CN112057131B (en) * | 2020-08-24 | 2023-08-01 | 谭新宇 | Tibia intramedullary rotary reamer system for replacing transverse bone movement |
| CN113974809A (en) * | 2021-12-15 | 2022-01-28 | 河北医科大学第三医院 | Tibia intramedullary nail |
| CN113974809B (en) * | 2021-12-15 | 2023-07-18 | 河北医科大学第三医院 | Tibia intramedullary nail |
| CN116035774A (en) * | 2023-03-07 | 2023-05-02 | 北京爱康宜诚医疗器材有限公司 | Long bone prosthesis |
| CN116035774B (en) * | 2023-03-07 | 2023-07-28 | 北京爱康宜诚医疗器材有限公司 | Long bone prosthesis |
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