CN212261479U - A external bone fixator rotation regulation mechanism for limbs deformity is corrected - Google Patents
A external bone fixator rotation regulation mechanism for limbs deformity is corrected Download PDFInfo
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- CN212261479U CN212261479U CN202020590091.XU CN202020590091U CN212261479U CN 212261479 U CN212261479 U CN 212261479U CN 202020590091 U CN202020590091 U CN 202020590091U CN 212261479 U CN212261479 U CN 212261479U
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Abstract
The utility model discloses an external bone fixator rotation regulation mechanism for limbs deformity is corrected, include: a first retaining ring; the second fixing ring is arranged opposite to the first fixing ring, and a plurality of second circular holes are formed in the second fixing ring; the threaded column is provided with an external thread, and one end of the threaded column penetrates through the first circular hole and then is fixedly arranged on the first fixing ring; the adjusting guide rod is provided with a first through hole at one end and external threads at the other end, and the threaded column is arranged in the first through hole; the clamping mechanism is detachably arranged on the second fixing ring; the upper part of the connecting sheet is provided with a second through hole, and the lower part of the connecting sheet passes through the second circular hole and then is fixedly arranged on the second fixing ring; and the nut mechanism is arranged at the external thread of the adjusting guide rod in a matching manner. The connecting piece drives the second fixing ring to rotate by adjusting the position of the nut mechanism on the adjusting guide rod, so that the position of the second fixing ring is adjusted.
Description
Technical Field
The utility model relates to a rotary mechanism, in particular to a rotary adjusting mechanism of an external bone fixator for correcting deformity of limbs.
Background
At present, a plurality of deformity correction problems exist in clinical orthopedics, and the introduction and development of Ilizarov orthopedic technology enable the orthopedic deformity correction to develop in a spanning way. The Ilizarov external fixation bracket has unique advantages incomparable with other orthopedic instruments, but the design of the components of the Ilizarov external fixation bracket has the defects of single configuration and defects, and the design defects greatly limit the application and further popularization of the Ilizarov external fixation bracket. In the existing external bone fixator, how to combine the components such as intramedullary pin and the like with an external fixing frame compactly and simply; how to rotate the hole ring angle; how to adjust the relative position of the hole ring; how to effectively apply the traction regeneration method and the like, much more depending on the subjective experience of medical staff, the adjustment of the external bone fixing frame is time-consuming and labor-consuming, and the adjustment has great adverse effects on the function exertion of the external bone fixing frame and the comfort of a patient wearing the external fixing frame.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a developed a rotatory adjustment mechanism of external bone fixator for limbs deformity is corrected, through the position of adjusting nut mechanism on adjusting the guide arm, loosen the solid fixed ring cooperation of clamping mechanism and second, make the connection piece drive the solid fixed ring of second and rotate, and then realize the solid fixed ring's of second position control.
The utility model discloses a another utility model aims at, through linear clamping piece and fixed clamping piece cooperation, make linear clamping mechanism and the solid fixed ring linear contact of second and can dismantle.
The utility model provides a technical scheme does:
an extraosseous fixator rotational adjustment mechanism for correction of limb deformities comprising:
the first fixing ring is provided with a plurality of first circular holes along the circumferential direction;
the second fixing ring is arranged opposite to the first fixing ring, and a plurality of second circular holes are formed in the second fixing ring along the circumferential direction;
one end of the threaded column penetrates through the first circular hole and then is fixedly arranged on the first fixing ring;
one end of the adjusting guide rod is provided with a first through hole;
the clamping mechanism is detachably arranged on the second fixing ring and can move along the circumferential direction of the second fixing ring, and the other end of the threaded column is fixed to the top of the clamping mechanism;
one end of the connecting sheet is provided with a second through hole, and the other end of the connecting sheet passes through the second circular hole and then is fixedly arranged on the second fixing ring;
the other end of the threaded column penetrates through the first through hole and then is positioned through two first positioning nuts, and the other end of the adjusting guide rod penetrates through the second through hole and then is positioned through two second positioning nuts.
Preferably, the clamping mechanism includes:
the linear clamping pieces are arranged on the second fixing rings, supporting columns are symmetrically arranged at two ends of each linear clamping piece, and the second fixing rings are arranged among the supporting columns;
the fixed clamping piece is arranged at the bottom of the second fixed ring, and third through holes are symmetrically formed in two ends of the fixed clamping piece;
the supporting column is provided with an external thread and is positioned through a third positioning nut after penetrating through the third through hole.
Preferably, the bottom of the linear clamping member is symmetrically provided at both ends with tapered portions for clamping and linearly contacting the second fixing ring.
Preferably, one end of the supporting column is fixedly arranged on the conical part.
Preferably, the adjusting guide rod is further provided with a limiting nut which is arranged at the external thread of the adjusting guide rod in a matching manner, is positioned between the second positioning nut and the first through hole and is close to the threaded column.
Preferably, the connecting piece further includes:
the pressing part is arranged in the middle of the connecting piece, the pressing part is of a cylindrical structure, and the diameter of the pressing part is larger than that of the second circular hole;
and the external thread part is arranged at the lower part of the connecting piece.
Preferably, the external thread portion is fixed by a fourth nut after passing through the second circular hole, so that the pressing portion is pressed against the second fixing ring.
Preferably, the plurality of first circular holes are provided on the first fixing ring at equal intervals in the circumferential direction.
Preferably, the plurality of second circular holes are provided in the second fixing ring at equal intervals in the circumferential direction.
Beneficial effect: the utility model discloses on the basis of the sufficient analysis Ilizarov external fixation frame regulation principle, provided an external fixation ware rotation regulation mechanism for limbs deformity is corrected, it can realize the relative upper end fixed ring's of lower extreme ring rotation and the regulation of each angle, and when adopting two sets of mechanisms combined use more than and, can guarantee that the relative position of two rings is unchangeable. The mechanism is ingenious and reliable in design and small in occupied space, can be applied to correction of various complex limb deformities, and has high clinical application value and good clinical application prospect.
The linear clamping piece is in linear contact with the lower end fixing ring, the linear clamping mechanism can be fixed on the lower end fixing ring through the extrusion of the fixing clamping piece and the third positioning nut, and the installation is convenient and flexible. The contact and fixing mode is skillfully designed.
The adjusting guide rod can freely rotate along with the change of the lower end fixing ring, and the two second positioning nuts on the adjusting guide rod can realize the fine adjustment of the relative rotation of the upper fixing ring and the lower fixing ring. The fixed clamping piece and the nut of the clamping mechanism are loosened, the conical part of the linear clamping piece is in linear contact with the second fixing ring all the time during adjustment, the adjusting guide rod rotates along with the linear clamping piece, fine adjustment of relative rotation of the upper fixing ring and the lower fixing ring is achieved according to the length change of the adjusting guide rod, and continuous, slow and stable traction force is provided for bones fixed on the bone penetrating needle.
When two or more groups of adjusting mechanisms are combined for use, the lower end fixing ring can realize the function of rotating relative to the upper end fixing ring on the premise that the relative position of the lower end fixing ring and the upper end fixing ring is not changed.
The whole mechanism can realize the relative adjustment of two fixed rings in multiple angles and multiple ranges, and has simple structure, convenient adjustment mode and high reliability.
In the complicated limb correction, the outer fixing frame is not required to be detached, the mechanism can be installed and fixed through the clamping action of the linear clamping piece, and the mechanism is convenient to install and use, flexible to apply and high in clinical application value.
Drawings
Fig. 1 is a schematic mechanism diagram of the rotation adjusting mechanism of the external bone fixator for limb correction according to the present invention.
Fig. 2 is a schematic structural diagram of the adjusting assembly of the present invention.
Fig. 3 is a partial enlarged view of the clamping mechanism of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
As shown in fig. 1-3, the present invention provides a rotation adjusting mechanism for an external fixator for correcting deformity of limbs, comprising: a first fixing ring 100, a threaded post 200, a second fixing ring 300, an adjustment guide 400, a clamping mechanism, and a connecting piece 600.
First solid fixed ring 100 and the solid fixed ring 300 of second set up relatively to be located the upper and lower both ends of the solid fixed ring 100 of first solid fixed ring 100 and second respectively, the one end of screw thread post 200 is passed and is fixed on first solid fixed ring 100, and first through-hole has been seted up to the one end of adjusting guide arm 400, and the other end has the external screw thread, and screw thread post 200 sets up in first through-hole, and the other end of screw thread post 200 passes and fixes a position through two first set nuts 410 behind the first through-hole. The clamping mechanism is detachably disposed on the second fixing ring 300 and can move circumferentially along the second fixing ring, and the other end of the screw post 200 is fixedly disposed on the top of the clamping mechanism. The lower portion of the connecting piece 600 passes through the second fixing ring 300 and then is fixed on the second fixing ring, a second through hole is formed in the upper portion of the connecting piece 600, the other end of the adjusting guide rod 400 is provided with an external thread, and the other end of the adjusting guide rod 400 passes through the second through hole and then is positioned by two second positioning nuts 430a and 430 b.
First solid fixed ring 100 is the ring structure, on first solid fixed ring 100, has seted up a plurality of first circular ports along circumference to a plurality of first circular ports equidistant arrange on first solid fixed ring 100 along circumference, first solid fixed ring 100 sets up in rotary adjustment mechanism's upper end, is the solid fixed ring in upper end. The second fixing ring 300 is arranged opposite to the first fixing ring 100, is positioned at the lower end of the rotating mechanism and is a lower end fixing ring, a plurality of second circular holes are formed in the second fixing ring 300 along the circumferential direction, and the plurality of second circular holes are arranged on the second fixing ring 300 along the circumferential direction at equal intervals.
The threaded post 200 has an external thread, and one end of the threaded post 200 passes through the first circular hole and then is fixedly connected to the first fixing ring 100 by a nut. One end of the adjusting guide rod 400 is provided with a first through hole, the other end of the adjusting guide rod has an external thread, and the other end of the threaded column 200 passes through the first through hole and then is positioned between the two first positioning bolts 410 and the adjusting guide rod 400.
The clamping mechanism is provided on the second fixing ring 300, and the other end of the screw post 200 is fixed to the clamping mechanism. The clamping mechanism includes: the linear clamping piece 510, the fixed clamping piece 520 and two third positioning nuts 530, the linear clamping piece 510 is disposed on the second fixing ring 300, two ends of the bottom of the linear clamping piece 510 are symmetrically provided with tapered portions 511, which are in linear contact with two sides of the second fixing ring 300 respectively, the two tapered portions 511 are further provided with supporting columns 540 respectively, so that the second fixing ring is disposed between the supporting columns 540, third through holes are respectively formed at two ends of the fixed clamping piece 520, the supporting columns 540 are provided with external threads, the two supporting columns 540 are positioned by the two third positioning nuts 530 after passing through the third through holes respectively, and the clamping mechanism is stably fixed on the second fixing ring 200 by the extrusion fit of the fixed clamping piece 520 and the third positioning nuts 530.
One end of the connecting sheet 600 is fixedly arranged on the second fixing ring 300, the other end of the connecting sheet 600 is provided with a second through hole, the other end of the adjusting guide rod 400 is provided with an external thread, and the other end of the adjusting guide rod 400 passes through the second through hole and then is positioned between the two second positioning nuts 430a and 430b and the connecting sheet 600. Wherein the second positioning nut 430a is disposed at one side of the connection plate 600 near the threaded rod 200, and the second positioning nut 430b is disposed at the other side of the connection plate 600.
The adjusting guide rod 400 is further provided with a limiting nut 420 which is arranged at the external thread of the adjusting guide rod 400 in a matching manner and is positioned between the second positioning nut 430 and the first through hole and close to one side of the threaded rod 200.
The connecting piece 600 further comprises a pressing part and an external thread part, the pressing part is arranged in the middle of the connecting piece 600, the pressing part is of a cylindrical structure, and the diameter of the pressing part is larger than that of the second circular hole; the external thread portion is disposed at the lower portion of the connecting plate 600, and the external thread portion is positioned by the fifth positioning bolt 610 after passing through the second circular hole 300, so that the pressing portion is pressed on the second fixing ring 300.
During the rotation adjustment, the two third positioning nuts 530 are loosened, the fixing relationship between the fixing clamping piece 530, the linear clamping piece 510 and the second fixing ring 300 is unlocked, the second positioning nut 430a on one side of the adjusting guide rod 400 in the advancing direction is loosened, the second positioning nut 440b on the other side is continuously screwed, the connecting piece 600 drives the second fixing ring 300 to rotate relative to the first fixing ring 100, the adjusting guide rod 400 rotates along with the rotation in the adjusting process, the relative rotation of the upper fixing ring and the lower fixing ring is finely adjusted according to the length change of the adjusting guide rod 400, and the bone fixed on the bone penetrating needle is continuously, slowly and stably pulled.
When two or more groups of mechanisms are combined for use, the rotation of the lower end circular ring relative to the upper end fixing ring can be realized on the premise that the relative positions of the two rings are not changed.
The whole mechanism can realize the relative adjustment of two fixed rings in multiple angles and multiple ranges, and has simple structure, convenient adjustment mode and high reliability.
In the complicated limb correction, the outer fixing frame is not required to be detached, the mechanism can be installed and fixed through the clamping action of the linear clamping piece, and the mechanism is convenient to install and use, flexible to apply and high in clinical application value.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (9)
1. An extraosseous fixator rotation adjustment mechanism for correction of limb deformities, comprising:
the first fixing ring is provided with a plurality of first circular holes along the circumferential direction;
the second fixing ring is arranged opposite to the first fixing ring, and a plurality of second circular holes are formed in the second fixing ring along the circumferential direction;
one end of the threaded column penetrates through the first circular hole and then is fixedly arranged on the first fixing ring;
one end of the adjusting guide rod is provided with a first through hole;
the clamping mechanism is detachably arranged on the second fixing ring and can move along the circumferential direction of the second fixing ring, and the other end of the threaded column is fixed to the top of the clamping mechanism;
one end of the connecting sheet is provided with a second through hole, and the other end of the connecting sheet passes through the second circular hole and then is fixedly arranged on the second fixing ring;
the other end of the threaded column penetrates through the first through hole and then is positioned through two first positioning nuts, and the other end of the adjusting guide rod penetrates through the second through hole and then is positioned through two second positioning nuts.
2. The mechanism of claim 1, wherein the clamping mechanism comprises:
the linear clamping pieces are arranged on the second fixing rings, supporting columns are symmetrically arranged at two ends of each linear clamping piece, and the second fixing rings are arranged among the supporting columns;
the fixed clamping piece is arranged at the bottom of the second fixed ring, and third through holes are symmetrically formed in two ends of the fixed clamping piece;
the supporting column is provided with an external thread and is positioned through a third positioning nut after penetrating through the third through hole.
3. The external fixator rotational adjustment mechanism for correction of limb deformities of claim 2 wherein the bottom of the linear clamp is symmetrically tapered at both ends for clamping and linearly contacting the second fixation ring.
4. The mechanism of claim 3, wherein one end of the support post is fixedly disposed on the tapered portion.
5. The rotating adjustment mechanism of an external fixator for correction of limb deformity according to claim 4, wherein said adjustment guide rod is further provided with a stop nut, which is disposed at the external thread of said adjustment guide rod, between said second positioning nut and said first through hole, and close to said threaded column.
6. The external fixator rotational adjustment mechanism for correction of limb deformities of claim 5, wherein the connecting strap further comprises:
the pressing part is arranged in the middle of the connecting piece, the pressing part is of a cylindrical structure, and the diameter of the pressing part is larger than that of the second circular hole;
and the external thread part is arranged at the lower part of the connecting piece.
7. The rotation adjustment mechanism for an external fixator for correction of limb deformity according to claim 6, wherein said external threaded portion is fixed by a fourth nut after passing through said second circular hole, so that said pressing portion is pressed against said second fixing ring.
8. The mechanism of claim 7, wherein the first plurality of circular holes are circumferentially equally spaced on the first retaining ring.
9. The mechanism of claim 8, wherein the second plurality of circular holes are circumferentially equally spaced on the second securing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020590091.XU CN212261479U (en) | 2020-04-20 | 2020-04-20 | A external bone fixator rotation regulation mechanism for limbs deformity is corrected |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020590091.XU CN212261479U (en) | 2020-04-20 | 2020-04-20 | A external bone fixator rotation regulation mechanism for limbs deformity is corrected |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212261479U true CN212261479U (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020590091.XU Active CN212261479U (en) | 2020-04-20 | 2020-04-20 | A external bone fixator rotation regulation mechanism for limbs deformity is corrected |
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| Country | Link |
|---|---|
| CN (1) | CN212261479U (en) |
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2020
- 2020-04-20 CN CN202020590091.XU patent/CN212261479U/en active Active
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