CN1403061A - Externally fixed lightly movable pressurized fracture recovering device - Google Patents
Externally fixed lightly movable pressurized fracture recovering device Download PDFInfo
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- CN1403061A CN1403061A CN 02137175 CN02137175A CN1403061A CN 1403061 A CN1403061 A CN 1403061A CN 02137175 CN02137175 CN 02137175 CN 02137175 A CN02137175 A CN 02137175A CN 1403061 A CN1403061 A CN 1403061A
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- external fixer
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Abstract
The present invention relates to medical equipment. The externally fixed lightly movable pressurized fracture recovering device includes external fixing frame and electric fine motion arrangement set on the external fixing frame directly to form one integral. The present invention can produce set fine motion in the fracture in settable and adjustable frequency, amplitude and period required for the different stage of fracture treatment. With electric fine motion arrangement, the present invention is small and easy to install, carry about and use.
Description
Technical field
What the present invention relates to is a kind of device that is used for fracture recovering, and particularly a kind of externally fixed lightly movable pressurized fracture recovering device belongs to medical instruments field.
Background technology
At present, the surgeon except adopting fracture clamping plate and plaster fixation, also adopts a kind of metal external fixer when treatment bones of limbs fracture patient.Adopt the plaster fixation mode, cause the fracture end displacement easily; Adopt the external fixer fixed form, fixing reliable, be difficult for causing the fracture end transposition; In recent years, many experimentatioies confirm that the controlled fine motion of fracture segment can promote the formation and the calcification of callus, accelerating union of bone fracture.The mode of bringing out commonly used is to bear a heavy burden by limbs to realize the axial fine motion of fracture segment, yet, the fine motion that heavy burden is brought out usually is subjected to different patients' mobility, to influences such as the tolerance degree of pain and heavy burden hopes, difficult controls such as the size of generation fine motion, opportunity, can't quantize, and too early heavy burden has danger such as the internal fixation of causing fracture, malunion of fracture and nonunion.Find by literature search, people such as Zhang Xianlong are at " Chinese surgical magazine ", and 1998 the 36th (5) write articles " fine motion is to the progress of union of fracture influence ", mention in this article: 1989 years, Goodship etc. do in the experimental union of fracture research of osteotomy (the osteotomy splaying is 3mm) at the sheep tibia, the aerodynamic slide plug is linked to each other with inching gear on the exterior fixation bracket, 1 week of postoperative, with 0.5Hz (near the physiology step frequently), each 17 minutes of every day, apply axial load, make fracture segment produce the 1mm fine motion, observed for 12 weeks.X line and mechanical test show that experimental group union of fracture rate and healing intensity are all apparently higher than simple external fixation group.After this, Kershaw etc., Sarmiento etc. do horizontal type fracture patient to clinical simple tibia and have carried out perspective study at random on same experimentation basis.1 week was used the inching gear group after the result showed the exterior fixation bracket fixation, when patient's union of fracture reaches every degree 15Nm bending strength, the fixing group of the simple exterior fixation bracket of needed healing time shifted to an earlier date for 5 weeks (P＜0.01), confirmed that further the early stage controlled slight movement of (about 1 week) fracture segment of union of fracture can promote growth of spur, accelerating union of bone fracture.At present, the external inching gear that adopts mainly is an air pump, links to each other with external fixer by the aerodynamic slide plug, and it is big to have a volume, the noise height, and air pump and external fixer can not be combined, and carry inconvenient shortcoming.
Summary of the invention
The objective of the invention is to provides a kind of externally fixed lightly movable pressurized fracture recovering device at deficiency of the prior art, makes its external fixation, has scalable frequency, time, amplitude, promotes the process of union of fracture.The present invention implements according to following technical scheme, the present invention mainly comprises: external fixer and electronic inching gear, its connected mode is: the external fixer bulk material adopts high-strength aluminum alloy, electronic inching gear is set directly on the external fixer, both form an integral body, and the frequency of fine motion, amplitude, time can be set by patient's needs.
External fixer comprises: the semicolumn lid, the zone face cylinder, spherical bearing (one) and (two), semiaxis, half-axile sleeve, the seam swivel nut, rotating screw bolt, the seam splicing sleeve, its connected mode is: semicolumn lid and zone face cylinder are connected and fixed by 2 soket head cap screws, have 5 apertures between them, during use, by these apertures, draw point is fixed on the both sides of patient's fracture site, be connected by spherical bearing () between left end zone face cylinder and the semiaxis, can make between zone face cylinder and the semiaxis and can adapt to small sway, be connected by another spherical bearing (two) between right-hand member zone face cylinder and the half-axile sleeve, act on identical, rotating screw bolt one end inserts in the sliding bearing of seam splicing sleeve, the other end is connected with seam swivel nut spiral, the optical axis of seam swivel nut and seam splicing sleeve inserts semiaxis and half-axile sleeve respectively, semiaxis is provided with keyway, can slide relatively between semiaxis and the half-axile sleeve.
Electronic inching gear comprises: the deceleration direct current generator, electric machine support, code-disc and micro photo electric pick off and control box, its connected mode is: code-disc is arranged on the side of rotating screw bolt near the seam splicing sleeve, the micro photo electric pick off is fixed on the outer rim of seam splicing sleeve, the grooving of micro photo electric pick off is over against the sensor block of code-disc, the deceleration direct current generator links to each other with external fixer with screw by electric machine support, control box is connected by screw and external fixer, or be separately one, draw 3 cables from control box, wherein one is the ac power plug of 220V, power line for driving and control motor, another root is the holding wire of photoelectric sensor.
Adjust frequency, time, amplitude knob on the control box, start power supply, motor is by decelerator, worm drive, make screw rod produce alternately rotating, the seam swivel nut produces back and forth (a little) and moves, thereby make by external fixer to produce fine motion between fracture site, crossed setting-up time after, fine motion stops automatically.
Length according to the fracture site both sides is adjusted, and makes semiaxis and half-axile sleeve be in needed size positions requirement, then, tightens slightly with soket head cap screw.The optical axis of seam swivel nut is inserted semiaxis, the optical axis of seam splicing sleeve is inserted half-axile sleeve, code-disc is installed, photoelectric sensor, parts such as electric machine support and deceleration direct current generator, 8051 Single Chip Microcomputer (SCM) system are installed in the control box, electronic components such as pulse-width modulation type power amplifier, 8051 single-chip microcomputer mini systems, by 8051 single-chip microcomputers, 8279 keyboards/display interface chip, the 74LS373 latch, 74hc86, grooved light Rhizoma Nelumbinis, devices such as 7404 and 7402 constitute, ancillary equipment comprises 1 * 4 keyboard array, motor output driving system (analog line driver adopts the L298 chip), (it is that 9014 audion drives that its meta selects analog line driver to adopt model to the charactron output driving system, section selects analog line driver to adopt 74ls244 to drive chip drives), output driving system by light every forming with analog line driver.On the basis of existing external fixer, increased this and had the electronic inching gear that helps promoting union of fracture speed of pressurization function periodically a little.
The DC speed-reducing that is fixed on the external fixer by electric machine support drives the rotating screw bolt rotation, the swivel nut that rotating screw bolt drives on it moves as straight line, screw rod whenever turns around, swivel nut moves a helical pitch, just change, reverse by the rule of setting and change rotary speed by control box control motor, thereby make swivel nut also and then do forward, oppositely and speed move, swivel nut move back and forth moving back and forth of bone that drive links to each other with the external fixer two ends.Amount of movement is that the amplitude of fine motion then depends on the size of screw rod helical pitch and the number of turns of rotating in the same way.Like this, select suitable screw rod helical pitch, the control motor just changes, reverses by setting rule, and by external fixer, the fine motion that acts on fracture end has just produced.
According to CNKI patent data library searching, have domestic not the appearing in the newspapers of external fixer of pressurization function periodically a little, existing external fixer patent does not have pressurization function periodically a little.According to union of fracture Study on Mechanism result, in fracture healing process, fracture site is applied a reciprocal fine motion pressure, and frequency is at 0.25 ~ 1 hertz, amplitude≤1-2 millimeter, pressure≤8 kilogram, each exercise 15 ~ 30 minutes, helps quickening the tissue repair between fracture site at every day 1 ~ 3 time, promote the growth of fractures blood capillary, the agglutination of callus formation and calcification.With the both sides of external fixation of the present invention, play external fixer at the union of fracture initial stage, simultaneously at patient's fracture site, by setting fine motion amplitude, frequency, time parameter, have and produce oligodynamics between the fracture site of making, carry out 1 ~ 3 time exercise every day, can the accelerating union of bone fracture process.
The present invention has substantive distinguishing features and marked improvement, it can make fracture site produce the fine motion that sets by the electronic inching gear that is connected on the external fixer, the frequency of fine motion, amplitude, time can be set and regulate, to satisfy the rehabilitation needs of different patients or fractures different phase in period, because employing is electronic inching gear, its volume is little, easy for installation, can form an organic whole with external fixer, be easy to carry, also easy to use.
Description of drawings
Fig. 1 structural representation of the present invention
The specific embodiment
As shown in Figure 1, the present invention mainly comprises: external fixer 1 and electronic inching gear 2, and its connected mode is: electronic inching gear 2 is set directly on the external fixer 1, and both form an integral body.
Have aperture between semicolumn lid 3 and the zone face cylinder 4.Semiaxis 7 is provided with keyway.
Electronic inching gear 2 comprises: deceleration direct current generator 12, electric machine support 13, code-disc 14 and micro photo electric pick off 15 and control box 16, its connected mode is: code-disc 14 is arranged on the side of rotating screw bolt 10 near seam splicing sleeve 11, micro photo electric pick off 15 is fixed on the outer rim of seam splicing sleeve 11, the grooving of micro photo electric pick off 15 is over against the sensor block of code-disc 14, deceleration direct current generator 12 links to each other with external fixer 1 by electric machine support 13 usefulness screws, control box 16 is connected by screw and external fixer 1, or is one separately.
Claims (6)
1, a kind of externally fixed lightly movable pressurized fracture recovering device, mainly comprise: external fixer (1), it is characterized in that also comprising: electronic inching gear (2), its connected mode is: electronic inching gear (2) is set directly on the external fixer (1), and both form an integral body.
2, this externally fixed lightly movable pressurized fracture recovering device according to claim 1, it is characterized in that external fixer (1) comprising: semicolumn lid (3), zone face cylinder (4), spherical bearing (5) and (6), semiaxis (7), half-axile sleeve (8), seam swivel nut (9), rotating screw bolt (10), seam splicing sleeve (11), its connected mode is: semicolumn lid (3) and zone face cylinder (4) are connected and fixed by soket head cap screw, be connected by spherical bearing (5) between left end zone face cylinder (4) and the semiaxis (7), be connected by another spherical bearing (6) between right-hand member zone face cylinder (4) and the half-axile sleeve (8), rotating screw bolt (10) one ends insert in the sliding bearing of seam splicing sleeve (11), the other end is connected with seam swivel nut (9) spiral, and the optical axis of seam swivel nut (9) and seam splicing sleeve (11) inserts semiaxis (7) and half-axile sleeve (8) respectively.
3, this externally fixed lightly movable pressurized fracture recovering device according to claim 2 is characterized in that having aperture between semicolumn lid (3) and the zone face cylinder (4).
4, this externally fixed lightly movable pressurized fracture recovering device according to claim 2 is characterized in that semiaxis (7) is provided with keyway.
5, this externally fixed lightly movable pressurized fracture recovering device according to claim 1, it is characterized in that electronic inching gear (2) comprising: deceleration direct current generator (12), electric machine support (13), code-disc (14) and micro photo electric pick off (15) and control box (16), its connected mode is: code-disc (14) is arranged on the side of rotating screw bolt (10) near seam splicing sleeve (11), micro photo electric pick off (15) is fixed on the outer rim of seam splicing sleeve (11), the grooving of micro photo electric pick off (15) is over against the sensor block of code-disc (14), deceleration direct current generator (12) links to each other with external fixer (1) with screw by electric machine support (13), control box (16) is connected by screw and external fixer (1), or is one separately.
6, this externally fixed lightly movable pressurized fracture recovering device according to claim 5, it is characterized in that control box (16) draws 3 cables, wherein one is the ac power plug of 220V, a power line for driving and control motor, and another root is the holding wire of photoelectric sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02137175XA CN1189134C (en) | 2002-09-26 | 2002-09-26 | Externally fixed lightly movable pressurized fracture recovering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB02137175XA CN1189134C (en) | 2002-09-26 | 2002-09-26 | Externally fixed lightly movable pressurized fracture recovering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1403061A true CN1403061A (en) | 2003-03-19 |
| CN1189134C CN1189134C (en) | 2005-02-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB02137175XA Expired - Fee Related CN1189134C (en) | 2002-09-26 | 2002-09-26 | Externally fixed lightly movable pressurized fracture recovering device |
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| Country | Link |
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| CN (1) | CN1189134C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106264693A (en) * | 2016-04-06 | 2017-01-04 | 苏州爱得科技发展股份有限公司 | The dynamic external fixator of multiaxis |
| WO2021115418A1 (en) * | 2019-12-13 | 2021-06-17 | The University Of Hong Kong | Motor-driven fixator to apply micromotion to fracture site to accelerate bone healing |
-
2002
- 2002-09-26 CN CNB02137175XA patent/CN1189134C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106264693A (en) * | 2016-04-06 | 2017-01-04 | 苏州爱得科技发展股份有限公司 | The dynamic external fixator of multiaxis |
| WO2021115418A1 (en) * | 2019-12-13 | 2021-06-17 | The University Of Hong Kong | Motor-driven fixator to apply micromotion to fracture site to accelerate bone healing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1189134C (en) | 2005-02-16 |
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