CN202604981U - Frame type external fixation device - Google Patents
Frame type external fixation device Download PDFInfo
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- CN202604981U CN202604981U CN 201220251127 CN201220251127U CN202604981U CN 202604981 U CN202604981 U CN 202604981U CN 201220251127 CN201220251127 CN 201220251127 CN 201220251127 U CN201220251127 U CN 201220251127U CN 202604981 U CN202604981 U CN 202604981U
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- seat
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Abstract
The utility model belongs to the technical field of external skeletal fixation devices, and relates to a frame type external fixation device, which comprises a holding seat for holding a fixed needle and a connecting rod for relatively fixing the holding seat, and is characterized by further comprising a switching device consisting of a fixed chuck, a movable chuck with a fastening part, and a splined shaft fixedly arranged on the fixed chuck, wherein the movable chuck and the fixed chuck are meshed with each other through teeth which are uniformly distributed radially on the end faces of the movable chuck and the fixed chuck, and are compressed and fixed through a locking mechanism; a connecting rod can be fixedly arranged on the fastening part in a sliding way; moreover, the holding seat is provided with at least one splined hole which is matched with the shape of the splined shaft; and the splined shaft is spliced into at least one splined hole. The frame type external fixation device has the advantages that an angle adjusting function is realized, the stability is far higher than that of the conventional external fixing frame with a universal joint, and the requirement of multi-direction needle threading is met; and members of the frame type external fixation device have very high generality, and a plurality of forms can be assembled according to treatment positions and requirements.
Description
Technical field
This utility model belongs to bone external fixator technical field, relates to a kind of frame-type external fixator, relates in particular to a kind of frame-type external fixator that is used for fracture of calcaneus.
Background technology
In the prior art, the bone external fixator can be used for common clinically treatment of fractures, also can be used for correcting some bone malformation, is a kind of important utensil of orthopaedics.Any bone external fixator all comprises locking pin (pins); Locking pin grips seat (clamps) and three kinds of basic elements of character of external connecting rod (connectors), and when being used for fractures, its operational approach is normally after the reduction of the fracture; Thread a needle position and angle of selection inserted locking pin; Install and grip seat, connecting rod etc., when selecting to thread a needle position and angle, require below should preferentially satisfying: locking pin is vertical with the backbone as far as possible; Locking pin is the least possible or do not pass through muscle, perhaps is selected in spatium intermusculare and threads a needle; Distance on one fracture segment between the locking pin is big as far as possible; Polytropism is threaded a needle as far as possible, strengthens antitorque commentaries on classics performance.But in fact; Conventional external fixator is higher to angle, the status requirement of locking pin; The structures shape of external fixer itself bounds of needling position and following pin angle, when deviation occurring, just can cause the connecting rod difficult installation; Occur installing situation such as back fracture end displacement easily, need insert locking pin again problems such as connecting rod also are installed once more.
For overcoming above-mentioned drawback; Usually adopt universal joint to increase the suitability of external fixer in the prior art; It is that the technical scheme that disclosed of 200920085010.4 Chinese patent " calcaneus reset external fixer " is consistent with application number all roughly; Realize the adjusting of angle through being slidingly matched between the bulb ball-and-socket, and provide frictional force to limit the rotation between the bulb ball-and-socket through the retaining mechanism of screw and so on.But it should be noted that external fixator most critical and basic index are exactly fixation stability property, must be able to guarantee that the condition of early functional exercise is issued to stable fixed requirement.And in clinical practice, find; Because patient's recovery period is longer, above-mentioned universal joint becomes the inflexible weak link of external fixer and by test repeatedly, when plus load is excessive or when receiving heavier colliding with between holding screw and the bulb conflict face little distortion can appear; And then occur sliding relatively; And after when receiving external force once more or repeatedly, this slippage can be increasing, causes fixedly unstable phenomenon.
(annotate: grip on the seat though locking pin also adopts holding screw to be secured in; But the force structure that is different from the bulb ball-and-socket; Because locking pin is with fixed angle vertical or that near normal is key; Longitudinal component when it receives external force is generally less, should be noted that on the contrary to avoid locking pin and grip a junction surface and metal fatigue occurs and cause locking pin fracture).
When especially external fixator is applied in the fracture of calcaneus treatment; As above-mentioned " calcaneus reset external fixer "; Owing to need on calcaneus, tibia and nut bone, penetrate locking pin simultaneously, require more highly for thread a needle position and angle, the setting of universal joint is necessity particularly.But just because of external fixer is positioned at foot, patient's external fixer in the process of receiving treatment also inevitably often receives the external force effect, and the external fixer that universal joint is loosening to cause the fixing ratio of unstability to be used for other positions more is prone to generation.And after this type of external fixator uses repeatedly, because wearing and tearing appear in the contact surface of holding screw and bulb, its fixedly unstability probability significantly lifting especially.
The utility model content
The purpose of this utility model embodiment is to be prone to the fixedly problem of unstability to the existing external fixer of universal joint that adopts; A kind of frame-type external fixator is proposed; Again design for universal joint; When its stability is higher than the stability of existing universal joints structure far away, has realized the regulatory function of angle, and taken into account the needs that can supply polytropism to thread a needle.
In order to reach above-mentioned utility model purpose, a kind of frame-type external fixator that this utility model embodiment proposes is realized through following technical scheme:
A kind of frame-type external fixer; Comprise and grip gripping seat and being used for of locking pin gripping the relatively-stationary connecting rod of seat; It is characterized in that: also comprise by deciding chuck, having the moving chuck of fastening part and be fixedly installed on and decide the switching device that the splined shaft on the chuck constitutes; Wherein, said moving chuck and decide to be meshed through be radial equally distributed teeth at the two end face between the chuck, and through a retaining mechanism the two is fixed; The slideable fixed installation one said connecting rod in said fastening part; The basal plane that splined shaft on the said switching device and its connecting rod of going up installation are parallel to said teeth respectively and are located in; In addition, saidly grip the splined hole that seat is provided with at least one and said splined shaft form fit, and the said splined shaft of plug-in mounting at least one said splined hole.
In the further specific embodiment of this utility model; Said external fixer also comprises connector between bar; Connector is made up of two said moving chucks and a said retaining mechanism between said bar; Said two moving chucks are meshed and are fixed through said retaining mechanism, and are installed in that two connecting rods on the connector are parallel to the basal plane that teeth were located on the said moving chuck respectively between said bar.
In the further specific embodiment of this utility model; Said fastening part is the interior bar groove that runs through setting along the field of conjugate action of said moving chuck; Said bar groove and said connecting rod form fit, the moving chuck of relative another or decide teeth on the chuck and oppress said connecting rod and be fixed in the bar groove.
In the further specific embodiment of this utility model; The said seat that grips is gone up the splined hole that at least two axis relative tilts are set; Said gripping run through the pin hole that is provided with the said locking pin of at least one suit on the seat, and corresponding each said pin hole screw thread is equipped with holding screw.
In the further specific embodiment of this utility model; The said seat that grips is divided into the two pointer type with two parallel pin holes and grips seat and grip seat with the single needle formula with a pin hole; Said two pointer type grips two splined holes that axis is perpendicular is set on the seat; One of them splined hole is vertical with two pin hole coplanes that said two pointer type grips on the seat, and another splined hole two pin hole antarafacials therewith is vertical, and equates with two pin hole distances; Said single needle formula grips seat and is provided with two perpendicular splined holes, and these two splined holes are vertical with two pin hole coplanes that said single needle formula grips on the seat.
In the further specific embodiment of this utility model, the said seat that grips roughly is rectangular-shaped, and said pin hole vertically passes through its end face and bottom surface, and two splined holes on it vertically are opened in said gripping on two sides that join respectively.
In the further specific embodiment of this utility model, said two pointer type grip the seat pin hole in be set with two locking pins that are fixed on tibia or the calcaneus; Said single needle formula grip the seat pin hole in be set with a locking pin that is fixed on the nut bone.
In the further specific embodiment of this utility model; Screw rod and nut that said retaining mechanism bag is a threaded engagement; Said moving chuck offers center hole with the center of deciding chuck; Said teeth are risen by its center hole place and are radial and are uniformly distributed with, and said screw rod passes through moving chuck successively and also is connected with nut thread with the center hole of deciding chuck.
Compared with prior art, the technical scheme that this utility model proposed has the following advantages:
1, designed a kind of universal joint again; When its stability is higher than the stability of existing universal joints structure far away; Realized the regulatory function of angle, and taken into account the needs that can supply polytropism to thread a needle, and can adjust its stability in good time according to the knitting process.
2, frame for movement is easy to dismounting and assembling, and adjustability is big, can do suitable adjustment to the position of bone stump after surgery.
3, to leave enough spaces after fixing, be convenient to that postoperative is changed dressings or postoperative second debridement, the second stage of repair process.
4, strong that connecting rod adopts, in light weight, can see through the X line.
5, the treatment needs that adapt to different parts, its member have very high versatility, can and require the multiple configuration of assembling according to therapentic part.
Description of drawings
Through the description of its exemplary embodiment being carried out below in conjunction with accompanying drawing, the above-mentioned feature and advantage of this utility model will become apparent and understand easily.
Structural representation when Fig. 1 is installed on the sufficient bone for external fixer among the embodiment 1;
Fig. 2 is embodiment 1 China and foreign countries' fixed rack structure sketch map;
Fig. 3 is a kind of external fixer structural representation of embodiment 2;
Fig. 4 is the another kind of external fixer structural representation of embodiment 2;
Fig. 5 is switching device and connecting rod assembly structural representation;
Fig. 6 is the switching device structural representation;
Fig. 7 is moving chuck engagement end face structural representation;
Fig. 8 is for deciding chuck engagement end face structural representation;
Fig. 9 is a connector structural representation between bar.
The specific embodiment
Below in conjunction with accompanying drawing this utility model is done further explain, so that technical staff's of the same trade understanding:
Shown in Fig. 1-9, label is represented respectively: locking pin 100, two pointer type grip seat 201, the single needle formula grips seat 202, pin hole 203, holding screw 204, splined hole 205, moving chuck 300, center hole 301, teeth 302, bar groove 303, opening 304, decides chuck 400, center hole 401, teeth 402, L shaped arm 500, transverse arm 501, splined shaft 502, sleeve 503, connecting rod 600, locking device 700, bolt 701, nut 702, tibia 801, nut bone 802, calcaneus 803.
Embodiment 1:
Shown in Fig. 1-2, Fig. 5-8; A kind of frame-type external fixer that is used for fracture of calcaneus that is proposed among this utility model embodiment 1 is the trigonometric expression external fixer; Mainly comprise gripping seat, switching device and connecting rod 600, connecting rod 600 through switching device with grip seat and link to each other, wherein:
Connecting rod 600
The round bar of connecting rod 600 for adopting carbon fibre composite to process, its strong, in light weight, and can see through the X-ray line, the problem of under X-ray, having developed when having avoided film making.
Grip seat
Gripping seat is the anchor clamps that are used for gripping locking pin 100.Because external fixer in the present embodiment is used to treat fracture of calcaneus; Can not be directly when the fixing calcaneus place of fractureing the fixing two ends that fracture of calcaneus; Need squeeze into locking pin 100 respectively at the rear end and the nut bone 802 of tibia 801, calcaneus 803, and external fixer is installed for correspondence.Because tibia 801, calcaneus 803 are different with the intensity of nut bone 802; The quantity of the locking pin 100 that can squeeze into also has difference, can be divided into so grip seat: the single needle formula that the two pointer type that grips locking pin 100 on tibia 801 or the calcaneus 803 grips seat 201, grip locking pin 100 on the nut bone 802 grips seat 202.Two pointer type grips seat 201 and single needle formula, and to grip seat 202 structures cardinal principle identical, all is rectangular-shaped.
Two pointer type grips seat and 201 is provided with: two splined holes 205, two pin holes 203 and two holding screws 204.Wherein: two pin holes 203 vertically pass through the end face that two pointer type grips seat 201 respectively and are provided with the bottom surface, and be set with 100, two holding screw 204 screw threads of locking pin in it and be installed in two pointer type and grip on seat 201 sides, and a corresponding respectively pin hole 203 settings.In use; Screwing in two pointer type to holding screw 204 grips in the screw of seat 201; End with holding screw 204 is pressed on the surface of locking pin 100; Even locking pin 100 is fixed on two pointer type and grips on the seat 201, for strengthening the intensity of the two connection, the local surfaces that the terminal surface of holding screw 204 and locking pin 100 are sleeved in the pin hole 203 all is a matsurface.Two splined holes 205 vertically are opened in two pointer type respectively and grip on two sides that seat 201 joins, and the inwall of splined shaft 502 is formed with the keyway that vertically is uniformly distributed with, be used for switching device on splined shaft 502 be connected.Because it is to be rigidly connected that switching device, two pointer type grip between seat 201 and locking pin 100 threes; The suffered external force of switching device is applied on two locking pins 100; Roughly the same in order to make two locking pins 100 receive external force, between these two splined holes 205 and two pin holes 203, need to satisfy like the requirement of upper/lower positions relation: 1, two pin holes 203 are parallel; 2, the axis of two splined holes 205 is vertical each other; 3, two pin hole 203 coplanes are vertical therewith for one axis in two splined holes 205; 4, two pin hole 203 antarafacials are vertical therewith for the axis of another splined hole 205, and equate with two pin holes, 203 distances.
The single needle formula grips seat 202 and is with the difference that two pointer type grips seat 201; The quantity of the holding screw 204 of pin hole 203 that is provided with on it and correspondence all is reduced to one; Pin hole 203 equally vertically passes through the single needle formula and grips seat 202 end face and be provided with the bottom surface, and two splined holes 205 vertically are opened in the single needle formula equally respectively and grip on 202 two sides joining.Grip in the seat 202 in the single needle formula, need between two splined holes 205 and the pin hole 203 to satisfy and concern like upper/lower positions: 1, the axis of two splined holes 205 is vertical each other; Pin hole 203 coplanes are vertical therewith respectively for the axis of two splined holes 205.
Obviously those skilled in the art are to be understood that; Two pointer type grips seat 201 and not only is confined to the rectangular-shaped structure in the present embodiment 1 with the profile that the single needle formula grips seat 202; Satisfying requirement of strength and meeting under the prerequisite of above-mentioned position relation requirement; The profile of other any three-dimensional shapes all can substitute, and as spherical, oval spherical, cylindric or the like, repeats no more at this.
Switching device
Switching device by moving chuck 300, decide chuck 400, locking device 700 and L shaped arm 500 and constitute.Wherein, said moving chuck 300 is with decide chuck 400 all in the form of annular discs, and the center offers center hole 301 and center hole 401 respectively.Locking device 700 is made up of bolt 701 and nut 702, and bolt 701 passes through center hole 301 and center hole 401, and is connected with nut, will move chuck 300 and decide chuck 400 to compress coaxial being fixed together.Be radial equally distributed teeth 302 with deciding to be formed with by its center on the end face that chuck 400 joins on the moving chuck 300; Be formed with by its center on the end face of deciding to join with moving chuck 300 on the chuck 400 and be radial equally distributed teeth 402; And teeth 402 are profiles of tooth of mutual concavo-convex cooperation with teeth 302, make chuck 300 and decide chuck 400 to be meshed.Decide the teeth 402 of chuck 400 and the teeth 302 of moving chuck 300 and be 72 teeth, per 5 ° of calibration are decided chuck 400 and can be realized the engagement on the arbitrary indexing in 360 ° with moving chuck 300.
Moving chuck 300 is provided with the fastening part of a connecting rod 600 of slideable fixed installation; In the present embodiment; The bar groove 303 of setting is run through for moving chuck 300 upper edges engagement end face in the fastening part, and bar groove 303 is located at the outer rim of moving chuck 300, and with said connecting rod 600 form fit.Bar groove 303 is formed with opening 304 on the engagement end face of moving chuck 300, when connecting rod 600 was sleeved in the bar groove 303, the outer surface of connecting rod 600 protruded in the teeth groove on moving chuck 300 end faces through this opening 304.When moving chuck 300 with decide chuck 400 engagements and when affixed, decide teeth 401 on the chuck 400 and oppress connecting rods 600 and be fixed in the bar groove 303.
L shaped arm 500 is L-shaped, is made up of with sleeve 503 orthogonal transverse arm 501.Wherein, The end of transverse arm 501 is formed with the splined shaft 502 with splined hole 205 form fit; The root of sleeve 503 then is vertically fixed on the center of the other end of deciding chuck 400 relative its engagement end faces; And be provided with around center hole 401, bolt 701 passes through center hole 301, center hole 401 and sleeve 503 successively, and extends that sleeve 503 is outer to be connected with nut 702.Splined hole 205 is similarly 72 teeth with keyway on the splined shaft 502, and per 5 ° of calibration be the radix realization relative rotation in 360 ° of scopes between the two with 5 °.
The purpose that switching device is set is to substitute universal joint of the prior art and length of connecting rod governor motion, through relatively rotating, move chuck 300 and deciding the adjusting that relatively rotating between the chuck 400 realized angle between splined shaft 502 and the splined hole 205; Regulate two length that grip the connecting rod 600 between the seat through bar groove 303 location.For realizing above-mentioned purpose; Splined shaft 502 also need satisfy following status requirement with bar groove 303 in the switching device: the axis of the splined shaft 502 on the switching device and the axis of bar groove 303 are parallel to the basal plane that teeth 301 are located on the moving chuck 300 respectively; In other words, the axis of the axis of splined shaft 502 and bar groove 303 is respectively perpendicular to the axis of screw rod 701.The purpose that is provided with like this is: when unclamping locking device 700; Moving chuck 300 can rotate relative to deciding chuck 400 around screw rod 701; Thereby drive on it connecting rod 600 rotations, because connecting rod 600 and the axis of splined shaft 502, so the track of connecting rod 600 rotations drops on the plane that is parallel to splined shaft 502 perpendicular to screw rod 701; When connecting rod 600 relative splined shafts 502 rotate to proper angle; Compress moving chuck 300 and decide chuck 400 with locking device 700, move chuck 300 and decide engagement between the chuck 400, this moment, 600 on connecting rod was positioned on this angle; When angle is confirmed between connecting rod 600 and the splined shaft 502, select the angle of splined shaft 502 insertion splined holes 205, i.e. relative position relation between scalable locking pin 100 and the connecting rod 600.Switching device has been realized the function of angular adjustment thus.Select the installation site of two switching devices on the connecting rod 600, i.e. spacing between these two switching devices of scalable has substituted the function of existing length of connecting rod governor motion.
For universal joint of the prior art; Relatively rotate owing to limit through keyway between splined shaft 502 and the splined hole 205; 401 restrictions relatively rotate moving chuck 300 with teeth with deciding the teeth 301 of chuck 400 through engagement, so the phenomenon that universal joint slides easily relatively in the prior art can not occur.
And when deciding the teeth 401 compressing connecting rods 600 on the chuck 400, because bar groove 303 is located at the outer rim of moving chuck 300, teeth 401 are approximately perpendicular to the axis setting of connecting rod 600, can guarantee fixation stability property between connecting rod 600 and the switching device thus.
External fixer when mounted in the present embodiment 1; At first at tibia 801, nut bone 802 and 803 times pins of calcaneus; Afterwards with two pointer type grip the seat 201 with the single needle formula grip the seat 202 correspondences be installed on the locking pin 100; Afterwards the switching device correspondence is inserted in the splined hole 205, connecting rod 600 is set between three switching devices at last, promptly can be assembled into and be the trigonometric expression external fixer.
This utility model one of ordinary skill in the art be appreciated that; Under the basis of the foregoing description; Can carry out combination in any for related assembly; Overall structure with for external fixer is carried out various distortion, as: the quantity for gripping member 200 increases and decreases, through adaptor and 600 corresponding connections of connecting rod; Can be with external fixator distortion becoming unilateral, bilateral formula, four limit type frame-types or polygonal frame formula external fixator etc., distortion drops in the protection domain of this utility model and these improve perhaps.
Embodiment 2:
Referring to Fig. 3-4, shown in Figure 9, set up connector between bar among the embodiment 2, be used for the relative fixed between connecting rod 600 and the connecting rod 600.When embodiment 1 intermediate cam formula external fixer undercapacity (structure shown in Fig. 3); When perhaps being not easy to connecting rod is set between two gripping members 200 (joint shown in Fig. 4), can two connecting rods 600 be coupled together structure by way of compensation through the rod member connector that provided in the present embodiment 2.
In fact, connector only is that existing member reconfigures in the switching device among the embodiment 1 between this bar.Specifically; Connector is made up of bolt 701, nut 702 and two moving chucks 300 between bar; Two moving chucks 300 are meshed; Connecting rod 600 is arranged in the bar groove 303 of moving chuck 300, and bolt 701 passes through two center holes 302 successively and is threaded with nut 702, and two moving chucks 300 are fixed together.This moment, the teeth 301 of two moving chucks 300 were oppressed the connecting rod 600 on another relative moving chuck 300 respectively, and two connecting rods 600 are pressed abd fixed in each self-corresponding draw-in groove 303.Can know by principle among the embodiment 1; Be assembled in that two connecting rods 600 on the connector are parallel to the basal plane that teeth were located on the said moving chuck 300 respectively between bar; And with the relatively rotating of two moving chucks 300, the two can realize the fixed angle that arbitrary indexing is supported in 360 degree.
In the foregoing description 1 or 2, moving chuck 300 and decide between the chuck 400, all pass through the center hole of offering at its center between two moving chucks 300 and realize being locked between the two through bolt 701.Obviously this bolt also can be vertically fixed on moving chuck 300 (or decide chuck 400) and meshes on the center of end face, and this bolt passes through relative another and decides center hole on the chuck 400 (or moving chuck 300) and realize the locking of the two then.Locking device structure is more succinct among the relative embodiment 1 of this kind structure or 2; But its shortcoming is do not have versatility between bar on the connector and switching device between the assembly of identical function: when bolt is arranged on 300 last times of moving chuck, two moving chucks 300 can't fit together each other; Decide 400 last times of chuck when bolt is arranged on, two moving chucks 300 can mesh, but still the bolt 701 that need set up among the embodiment 2 is assembled with nut 702.As the alternative of this utility model.
This utility model one of ordinary skill in the art be appreciated that; The above embodiment of this utility model is merely one of preferred embodiment of this utility model; Be the length restriction; Here can not all embodiments of particularize, any enforcement that can embody this utility model claim technical scheme is all in the protection domain of this utility model.
Claims (8)
1. frame-type external fixer; Comprise and grip gripping seat and being used for of locking pin gripping the relatively-stationary connecting rod of seat; It is characterized in that: also comprise by deciding chuck, having the moving chuck of fastening part and be fixedly installed on and decide the switching device that the splined shaft on the chuck constitutes; Wherein, said moving chuck and decide to be meshed through be radial equally distributed teeth at the two end face between the chuck, and through a retaining mechanism the two is fixed; The slideable fixed installation one said connecting rod in said fastening part; The basal plane that splined shaft on the said switching device and its connecting rod of going up installation are parallel to said teeth respectively and are located in; In addition, saidly grip the splined hole that seat is provided with at least one and said splined shaft form fit, and the said splined shaft of plug-in mounting at least one said splined hole.
2. a kind of frame-type external fixer as claimed in claim 1; It is characterized in that: said external fixer also comprises connector between bar; Connector is made up of two said moving chucks and a said retaining mechanism between said bar; Said two moving chucks are meshed and are fixed through said retaining mechanism, and are installed in that two connecting rods on the connector are parallel to the basal plane that teeth were located on the said moving chuck respectively between said bar.
3. according to claim 1 or claim 2 a kind of frame-type external fixer; It is characterized in that: said fastening part is the interior bar groove that runs through setting along the field of conjugate action of said moving chuck; Said bar groove and said connecting rod form fit, the moving chuck of relative another or decide teeth on the chuck and oppress said connecting rod and be fixed in the bar groove.
4. a kind of frame-type external fixer as claimed in claim 3; It is characterized in that: the said seat that grips is gone up the splined hole that at least two axis relative tilts are set; Said gripping run through the pin hole that is provided with the said locking pin of at least one suit on the seat, and corresponding each said pin hole screw thread is equipped with holding screw.
5. a kind of frame-type external fixer as claimed in claim 4; It is characterized in that: the said seat that grips is divided into the two pointer type with two parallel pin holes and grips seat and grip seat with the single needle formula with a pin hole; Said two pointer type grips two splined holes that axis is perpendicular is set on the seat; One of them splined hole is vertical with two pin hole coplanes that said two pointer type grips on the seat, and another splined hole two pin hole antarafacials therewith is vertical, and equates with two pin hole distances; Said single needle formula grips seat and is provided with two perpendicular splined holes, and these two splined holes are vertical with two pin hole coplanes that said single needle formula grips on the seat.
6. a kind of frame-type external fixer as claimed in claim 5; It is characterized in that: the said seat that grips roughly is rectangular-shaped; Said pin hole vertically passes through its end face and bottom surface, and two splined holes on it vertically are opened in said gripping on two sides that join respectively.
7. a kind of frame-type external fixer as claimed in claim 5 is characterized in that: said two pointer type grip the seat pin hole in be set with two locking pins that are fixed on tibia or the calcaneus; Said single needle formula grip the seat pin hole in be set with a locking pin that is fixed on the nut bone.
8. a kind of frame-type external fixer as claimed in claim 3; It is characterized in that: screw rod and nut that said retaining mechanism bag is a threaded engagement; Said moving chuck offers center hole with the center of deciding chuck; Said teeth are risen by its center hole place and are radial and are uniformly distributed with, and said screw rod passes through moving chuck successively and also is connected with nut thread with the center hole of deciding chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220251127 CN202604981U (en) | 2012-05-30 | 2012-05-30 | Frame type external fixation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220251127 CN202604981U (en) | 2012-05-30 | 2012-05-30 | Frame type external fixation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202604981U true CN202604981U (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220251127 Expired - Fee Related CN202604981U (en) | 2012-05-30 | 2012-05-30 | Frame type external fixation device |
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| CN (1) | CN202604981U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102670289A (en) * | 2012-05-30 | 2012-09-19 | 上海市奉贤区中心医院 | Frame-type external fixator |
| CN104323834A (en) * | 2014-10-24 | 2015-02-04 | 苏州仁捷瑞自动化科技有限公司 | Postoperative bone corrector |
| CN106377307A (en) * | 2016-09-22 | 2017-02-08 | 沈影超 | Limited contact type skid-proof patella claw |
| CN106955146A (en) * | 2017-05-09 | 2017-07-18 | 上海市奉贤区中心医院 | The miniature fixator of fracture of calcaneus |
-
2012
- 2012-05-30 CN CN 201220251127 patent/CN202604981U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102670289A (en) * | 2012-05-30 | 2012-09-19 | 上海市奉贤区中心医院 | Frame-type external fixator |
| CN104323834A (en) * | 2014-10-24 | 2015-02-04 | 苏州仁捷瑞自动化科技有限公司 | Postoperative bone corrector |
| CN108065995A (en) * | 2014-10-24 | 2018-05-25 | 安溪县海宏生物科技有限公司 | A kind of skeletal re-alignment device and skeletal re-alignment method |
| CN108065995B (en) * | 2014-10-24 | 2021-02-19 | 深圳鹤立国高医疗科技有限公司 | Skeleton corrector and skeleton correcting method |
| CN106377307A (en) * | 2016-09-22 | 2017-02-08 | 沈影超 | Limited contact type skid-proof patella claw |
| CN106955146A (en) * | 2017-05-09 | 2017-07-18 | 上海市奉贤区中心医院 | The miniature fixator of fracture of calcaneus |
| CN106955146B (en) * | 2017-05-09 | 2023-05-26 | 上海市奉贤区中心医院 | Miniature fixer for calcaneus fracture |
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