CN2440459Y - Automatic gradual callus extension device - Google Patents
Automatic gradual callus extension device Download PDFInfo
- Publication number
- CN2440459Y CN2440459Y CN 00255132 CN00255132U CN2440459Y CN 2440459 Y CN2440459 Y CN 2440459Y CN 00255132 CN00255132 CN 00255132 CN 00255132 U CN00255132 U CN 00255132U CN 2440459 Y CN2440459 Y CN 2440459Y
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- China
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- osteotylus
- automatically
- worm
- traction
- extender
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Abstract
The utility model discloses an automatic, continuous, and gradual poroma extending device which is used for extending bones in a poroma extending mode and comprises an n-shaped structure frame and a traction annular frame which can be moved upwards and downwards. The utility model is characterized in that a transmission mechanism of a worm wheel, and a step motor which can cause the traction annular frame to be moved on the n-shaped structure frame is arranged on the traction annular frame. The automatic control of the poroma extending device can be realized by controlling the rotation speed and the work time of the step motor. The extending device has the advantages of scientific design and reasonable and simple structure. The continuous traction of an operative part adapts for the regeneration requirement of the interior tissues of a body. The possibility of causing various complications is reduced. The operation is convenient and the fixation is reliable.
Description
The utility model relates to medical apparatus and instruments, especially a kind of automatically and gradually advancing osteotylus extender that is used for being undertaken bone lengthening by the callus lengthening mode.
The callus lengthening art is meant at the inside and outside periosteum of the complete reservation of metaphysis osteotomy overtime, and the mesenchymal cell of outer periosteum and interior periosteum has very strong osteogenic ability, by reaching these osteogenic tissues of lasting tractive slowly, gradually, when making osteotomy place and region of elongation callus formation, bone is prolonged, with the balance of maintenance limbs, thereby avoid carrying out the bone transplanting second time and internal fixation operation, simultaneously also rectifiable as various deformities such as angulation deformity, rotation deformity, soft tissue deformitys.Be to cooperate the enforcement of callus lengthening art, as far back as nineteen twenties the bone external fixer be applied to the bone lengthening field.At present, the external fixation extension fixture that is widely used in the callus lengthening art mostly is annular external fixer, this annular external fixer comprises one by support and two ∏ shape structure-steel framings that screw rod constitutes, two screw rods of ∏ shape structure-steel framing are provided with one can cooperate the cross bar that moves up and down with screw rod, regulates the nut of cross bar and can realize that cross bar moves up and down along ∏ shape structure-steel framing.Adopt this annular external fixer as traction appliance, carry out the callus lengthening art, hauling speed commonly used is 1mm every day, divides and finishes for 2～4 times, promptly divides every day to regulate the annular external fixer cross bar that is set on the limbs for 2～4 times and move 1mm along screw rod.Being related of hauling speed and callus formation and complication is bigger, although the mode of taking section gap to regulate is at present finished the hauling speed of 1mm every day, to satisfy the requirement that callus slowly forms.But according to the human body growth course, the hauling speed of this saltatory is not very good, and therefore, existing all kinds of traction fixation frames are applied to the callus lengthening art and exist the incidence rate of various complication higher.According to one's analysis, this unbalanced or operational error with hauling speed, pull strength is relevant.Therefore, how making crust prolong the hauling speed of art and the characteristics that strength meets the limbs tissue growth more, is the problem that the medical matters scientific and technical personnel are concerned about always.
The purpose of this utility model is the deficiency that exists at above-mentioned orthopaedics traction fixation frame, the automatically and gradually advancing osteotylus extender that provides a kind of pull strength equilibrium, hauling speed and limbs tissue growth to adapt.
Automatically and gradually advancing osteotylus extender of the present utility model, comprise: by toroidal frame and two ∏ shape structure-steel framings that screw rod constitutes, is furnished with the traction toroidal frame of offering corresponding perforation on two screw rods of ∏ shape structure-steel framing, it is characterized in that: be separately installed with on traction toroidal frame set symmetric two movable blocks two axis holes have can with the worm gear of screw engages screw thread, be respectively equipped with on two movable blocks and cooperate the transmission worm screw with worm gear, constitute Worm wheel transmission mechanism, be installed as two motors that worm screw provides power respectively on traction toroidal frame two movable blocks, described two motors are by its rotating speed of may command and the control of the control device of working time.
In addition key character of the present utility model is: automatically and gradually advancing osteotylus extender is provided with a pick off that can measure pull strength size under its duty.
The design principle of automatically and gradually advancing osteotylus extender of the present utility model is: the rotating speed of transmission motor is controlled traction toroidal frame the moving automatically on screw rod of realizing the callus lengthening device by control device; By control device the working time of motor is determined the shift length of traction toroidal frame on screw rod.Can monitor the pull strength that acts on operative site at any time by pick off.
Automatically and gradually advancing osteotylus extender design science of the present utility model, rational in infrastructure, simple, it has the following advantages: 1, the application of this automatically and gradually advancing osteotylus extender on the callus lengthening art, because the mobile of toroidal frame carries out with continuous fashion in the extender traction, therefore, its continuous traction to operative site more adapts to the regeneration requirement of patient's internal body tissue, avoid prior art once a day or second traction because of drawing the unbalanced incompatibility that causes operative site body tissue growth, cause various complication.2,, thereby reduce the generation of complication because whole distraction procedure continues to carry out, and its pull strength is evenly distributed, and can guarantee the nature static at bone-pin interface.3, utilize pick off to monitor and the setting of optimum traction to pull strength.4, adopt this extender to carry out the patient of callus lengthening art, patient bears a heavy burden down and can produce axial stress in the callus lengthening district, promotes growth of spur and moulding.5, because this extender is in light weight, patient can bear a heavy burden down fully, has made things convenient for taking care of oneself of patient.6, applied widely, be applicable to the rectification of various cacomelias such as, bone tumor operation back damaged such as congenital of short and small stature, dwarfism, achondroplasia, traumatic bone, osteomyelitis are damaged, poliomyelitis, congenital pseudarthrosis of tibia, growth retardation etc.7,, fixing reliable because the operation of this extender is controlled by control device, and it is easy to operate.
The concrete structure of this utility model automatically and gradually advancing osteotylus extender by the following drawings and
Embodiment provides in detail.
Fig. 1 is the structural representation of automatically and gradually advancing osteotylus extender.
Can be clear that from Fig. 1, the ∏ shape structure-steel framing 1 of automatically and gradually advancing osteotylus extender is connected its two ends fixed block 6 by toroidal frame 2 and vertical fixing, two screw rods 3 on 7,4 constitute, toroidal frame 2 symmetric two fixed blocks 6, intert on 7 and be equipped with draw point 5, by draw point 8 and two movable blocks 9 that are provided with perforation, the 10 traction toroidal frames of forming 11 are set in two screw rods 3, on 4, two movable blocks 9, all the worm gear 12 that one axis hole is provided with screw thread is installed respectively on 10 with model of action, 13, worm gear 12,13 axis hole screw thread and screw rod 3,4 the position of engages adjustable traction toroidal frame 11 on ∏ shape structure-steel framing 1, two movable blocks 9, be respectively equipped with on 10 one can with worm gear 12,13 worm screws 14 that cooperate, 15.Described two pairs of worm gears 12,13 and worm screw 14,15 constitute two groups of Worm wheel transmission mechanisms respectively, and its gear ratio is consistent.Also be respectively equipped with on two movable blocks 9,10 to worm screw 14,15 provides motor 16,17, two motors 16,17 of power and control by control device 18.As: the gear ratio of two groups of Worm wheel transmission mechanisms is set at 1: 30, screw rod 3 and 4 helical pitch are 2mm, the step angle of motor 16,17 is 3 °, set control device 18 and whenever send a pulse and can make motor 16,17 rotate 3 ° respectively, control device 18 whenever sends a pulse and just can make traction toroidal frame 11 move 0.00056mm so.As every day drawing length be set at 1mm, then control device 18 can be finished the drawing length of setting after sending 1785.7 pulses of 1/0.00056 ≈.Be the convenient size of scientifically controlling pull strength, automatically and gradually advancing osteotylus extender is furnished with the pick off 19 that can measure pull strength size under its duty, this pick off 19 is installed on the toroidal frame 2 of ∏ shape structure-steel framing 1, and described pick off 19 is the piezoquartz tube sensor.
Claims (4)
1, a kind of automatically and gradually advancing osteotylus extender, comprise: by toroidal frame (2) and two screw rods (3), (4) the ∏ shape structure-steel framing (1) of Gou Chenging, two screw rods (3) of ∏ shape structure-steel framing (1), (4) be provided with and prolong the traction toroidal frame (11) that it moves up and down, it is characterized in that: traction toroidal frame (11) set symmetric two movable blocks (9), (10) be separately installed with on two axis holes have can with the worm gear (12) of screw engages screw thread, (13), two movable blocks (9), (10) be respectively equipped with on and worm gear (12), (13) cooperate transmission worm screw (14), (15), constitute Worm wheel transmission mechanism, two movable blocks (9), (10) be installed as worm screw (14) on respectively, (15) provide the motor (16) of power, (17), described motor (16), (17) by its rotating speed of may command and the control device of working time (18) control.
2, automatically and gradually advancing osteotylus extender according to claim 1 is characterized in that: described two pairs of worm gears (12), (13) constitute two groups of Worm wheel transmission mechanisms respectively with worm screw (14), (15), and its gear ratio is consistent.
3, automatically and gradually advancing osteotylus extender according to claim 1 and 2 is characterized in that: automatically and gradually advancing osteotylus extender is provided with a pick off (19) that can measure pull strength size under its duty.
4, automatically and gradually advancing osteotylus extender according to claim 3 is characterized in that: described pick off (19) is the piezoquartz tube sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00255132 CN2440459Y (en) | 2000-09-21 | 2000-09-21 | Automatic gradual callus extension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00255132 CN2440459Y (en) | 2000-09-21 | 2000-09-21 | Automatic gradual callus extension device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2440459Y true CN2440459Y (en) | 2001-08-01 |
Family
ID=33612204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00255132 Expired - Lifetime CN2440459Y (en) | 2000-09-21 | 2000-09-21 | Automatic gradual callus extension device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2440459Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725780A (en) * | 2017-03-26 | 2017-05-31 | 天津市新中医疗器械有限公司 | A kind of orthopaedics ring rod combines exterior fixing rack |
-
2000
- 2000-09-21 CN CN 00255132 patent/CN2440459Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725780A (en) * | 2017-03-26 | 2017-05-31 | 天津市新中医疗器械有限公司 | A kind of orthopaedics ring rod combines exterior fixing rack |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |