CN215129852U - Tibiofibular metaphysis external fixator with stable angle - Google Patents
Tibiofibular metaphysis external fixator with stable angle Download PDFInfo
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- CN215129852U CN215129852U CN202121252528.XU CN202121252528U CN215129852U CN 215129852 U CN215129852 U CN 215129852U CN 202121252528 U CN202121252528 U CN 202121252528U CN 215129852 U CN215129852 U CN 215129852U
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Abstract
The utility model discloses a tibiofibula metaphysis external fixator with stable angle, which comprises a metaphysis end ring, wherein the middle part of the metaphysis end ring is fixedly connected with a first supporting rod, the first supporting rod is arranged in a first universal joint, the first universal joint is connected on a main connecting rod in a sliding way, the first supporting rod is parallel to the axis of the main connecting rod, two ends of the metaphysis end ring are respectively fixedly connected with a second supporting rod, one end of the main connecting rod, which is far away from the metaphysis end ring, is connected with two second universal joints in a sliding way, the two second supporting rods are respectively connected with a third universal joint in a sliding way, two bending auxiliary rods are respectively arranged on two sides of the main connecting rod and on the two third universal joints, two ends of the bending auxiliary rods are respectively arranged between the third universal joints and the second universal joints, a plurality of fourth universal joints are connected on the main connecting rod in a sliding way, each fourth universal joint is provided with a fixing needle, and the bending auxiliary rods are arranged, and the metaphyseal ring and the stable triangular supporting structure are formed, and the method is suitable for the technical field of medical instruments.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, specifically speaking relates to a tibiofibula metaphysis external fixator of angle stability.
Background
The external fixing frame for orthopaedics is an external fixing device, which connects each end of fracture with one or more longitudinal rods (tubes) and/or rings through metal bone nails to achieve the effects of stabilization and reduction. The existing orthopedic external fixation bracket has various forms, but can be divided into three types of ring, semi-ring and single side on the whole. Compared with annular and semi-annular structures, the orthopedic external fixation bracket with the unilateral structure has the characteristics of compact structure, low manufacturing cost, convenience in wearing and the like. The external fixing bracket of the orthopaedics calf shank with a unilateral structure mainly comprises a main connecting rod and a metaphysis end ring; however, the joint of the existing metaphysis ring and the main connecting rod is in clamping groove type connection, the metaphysis ring and the main connecting rod are unstable due to the overlong main connecting rod, the angulation is unstable and the lever action force is large, and the patient metaphysis can not be healed or has angulation deformity easily.
SUMMERY OF THE UTILITY MODEL
The utility model provides a tibiofibula metaphysis external fixation ware that angle is stable to solve the unstable problem that easily causes unable healing of patient's metaphysis department or angulation deformity of metaphysis department of metaphysis end ring and main connecting rod junction angulation.
In order to achieve the above object, the utility model adopts the following technical scheme:
the angular stabilized external tibial-fibular metaphysis fixer is characterized by comprising a semi-arc metaphysis ring, the middle part of the metaphysis end ring is fixedly connected with a first support rod which is arranged in a first universal joint, the first universal joint is connected on the main connecting rod in a sliding way, the first supporting rod is parallel to the axis of the main connecting rod, two ends of the metaphysis end ring are fixedly connected with second supporting rods respectively, one end of the main connecting rod, which is far away from the metaphysis end ring, is connected with two second universal joints in a sliding way, the two second supporting rods are connected with third universal joints in a sliding way respectively, two bending auxiliary rods are arranged on two sides of the main connecting rod and on the two third universal joints respectively, the two ends of the bending auxiliary rod are respectively arranged between the third universal joint and the second universal joint, the main connecting rod is connected with a plurality of fourth universal joints in a sliding mode, and each fourth universal joint is provided with a fixing needle used for fixing a fracture part.
Furthermore, the axes of the first support rod and the second support rod are parallel and have the same structure, and the end parts of the first support rod and the second support rod are respectively fixed with a metaphysis end ring in a threaded connection mode.
Furthermore, a plurality of through holes are formed in the side surface of the metaphyseal end ring at intervals along the circumferential direction of the metaphyseal end ring, the through holes in the middle of the metaphyseal end ring and the through holes at the two ends of the metaphyseal end ring are respectively matched and inserted with fixing parts, and the first supporting rod and the second supporting rod are respectively fixed with the corresponding fixing parts in a threaded connection mode.
Furthermore, the fixing part comprises a threaded rod inserted into the through hole, a threaded sleeve with internal threads is coaxially and integrally formed on the threaded rod, a locking nut is screwed into the threaded rod to fix the fixing part and the metaphysis end ring, external threads are formed at the end parts of the first support rod and the second support rod, and the first support rod and the second support rod are in threaded connection in the threaded sleeve to fix the fixing part and the first support rod and the second support rod respectively.
Further, first universal joint includes sliding connection in the circular slide on the main connecting rod, the top of circular slide forms the boss, be provided with the joint unit that is used for the first bracing piece of joint on the boss, install on the circular slide and be used for restricting its gliding spacing unit.
Further, first universal joint, second universal joint, third universal joint and fourth universal joint are the same structure, first universal joint and the circular slide of second universal joint and fourth universal joint be sliding connection respectively on the main connecting rod, two the circular slide of third universal joint is sliding connection respectively on the second bracing piece, the both ends difference joint of crooked auxiliary rod is on the joint unit of third universal joint and the joint unit of second universal joint, the joint unit joint of fourth universal joint has fixed needle.
Furthermore, the limiting unit comprises a sliding hole penetrating through the circular sliding seat, the main connecting rod is connected in the sliding hole in a sliding mode, a first threaded hole communicated with the sliding hole is formed in the side face of the circular sliding seat, a limiting bolt is connected in the first threaded hole in an internal thread mode, and the limiting bolt moves and abuts against the main connecting rod by rotating the limiting bolt so as to limit the sliding of the circular sliding seat.
Further, the joint unit is including seting up in the second screw hole the same rather than the axis on the circular slide, second screw hole female connection has locking screw, locking screw keeps away from the one end of circular slide and has linked firmly the rotating head, the coaxial plectane that compresses tightly that is provided with between rotating head and the circular slide, the middle part that compresses tightly the plectane runs through there is the round hole, locking screw cup joint in the round hole, compress tightly and offer the draw-in groove that is used for the fixed first bracing piece of joint on the plectane is close to a terminal surface of circular slide, rotate the rotating head, rotate through locking screw and drive the rotating head extrusion compress tightly the plectane, compress tightly the draw-in groove chucking on the plectane first bracing piece to constitute first bracing piece and compress tightly the fixed between the plectane.
The utility model discloses owing to adopted foretell structure, it compares with prior art, and the technical progress who gains lies in: the utility model comprises a semi-arc metaphysis end ring, a first supporting rod is fixedly connected with the middle part of the metaphysis end ring, the first supporting rod is arranged in a first universal joint, the first universal joint is glidingly connected with a main connecting rod, the axes of the first supporting rod and the main connecting rod are parallel, second supporting rods are respectively and fixedly connected with the two ends of the metaphysis end ring, one end of the main connecting rod far away from the metaphysis end ring is glidingly connected with two second universal joints, the two second supporting rods are respectively and glidingly connected with third universal joints, bending auxiliary rods are respectively arranged on the two sides of the main connecting rod and on the two third universal joints, the two ends of the bending auxiliary rods are respectively and fixedly arranged between the third universal joints and the second universal joints, a plurality of fourth universal joints are glidingly connected with the main connecting rod, and a fixing needle for fixing the fracture part is arranged on each fourth universal joint, the utility model discloses a first supporting rod and a first universal joint are arranged between the metaphysis end ring and the main connecting rod, compare current draw-in groove joint metaphysis end ring, can make to be connected more stably between metaphysis end ring and the main connecting rod to through set up crooked auxiliary rod in main connecting rod both sides, form stable triangle bearing structure with metaphysis end ring, can increase the support intensity of main connecting rod both sides, stability is better, and patient's shank radian is pressed close to the crooked radian of crooked auxiliary rod, can better adapt to patient's shank, and fixed effectual, stability is strong.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an exploded view of a fixation component and metaphyseal ring of an embodiment of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 1;
FIG. 4 is an enlarged view at B of FIG. 1;
fig. 5 is a schematic structural diagram of the connection between the second universal joint and the main connecting rod, and the connection between the fourth universal joint and the main connecting rod;
fig. 6 is a cross-sectional view of a first gimbal according to an embodiment of the present invention.
Labeling components: 1-metaphysis end ring, 2-first support rod, 3-first universal joint, 4-main connecting rod, 5-second support rod, 6-second universal joint, 7-third universal joint, 8-bending auxiliary rod, 9-fourth universal joint, 10-fixing needle, 11-through hole, 12-threaded rod, 13-threaded sleeve, 14-locking nut, 15-circular sliding seat, 16-boss, 17-first threaded hole, 18-limiting bolt, 19-second threaded hole, 20-locking screw, 21-rotating head, 22-pressing circular plate, 23-clamping groove and 24-sliding hole.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the invention.
Example a Angle-stabilized external tibial-fibular metaphysis fixator
The embodiment discloses an angular stabilized external fixator for tibiofibular metaphysis, as shown in fig. 1-6, comprising a semi-arc metaphysis ring 1, a first support rod 2 fixedly connected to the middle part of the metaphysis ring 1, the first support rod 2 installed in a first universal joint 3, the first universal joint 3 slidably connected to a main connecting rod 4, the axes of the first support rod 2 and the main connecting rod 4 are parallel, second support rods 5 respectively fixedly connected to two ends of the metaphysis ring 1, two second universal joints 6 slidably connected to one end of the main connecting rod 4 far from the metaphysis ring 1, two third universal joints 7 respectively slidably connected to the two second support rods 5, auxiliary bending rods 8 respectively installed on two third universal joints 7 and two sides of the main connecting rod 4, two ends of the auxiliary bending rods 8 respectively fixedly installed between the third universal joints 7 and the second universal joints 6, the main connecting rod 4 is connected with a plurality of fourth universal joints 9 in a sliding way, each fourth universal joint 9 is provided with a fixing pin 10 for fixing a fracture part, the embodiment can ensure that the connection between the metaphysis end ring 1 and the main connecting rod 4 is more stable compared with the prior clamping groove clamping metaphysis end ring 1 by arranging the first supporting rod 2 and the first universal joint 3 between the metaphysis end ring 1 and the main connecting rod 4, and can increase the supporting strength at both sides of the main connecting rod 4 and have better stability by arranging the bending auxiliary rods 8 at both sides of the main connecting rod 4 to form a stable triangular supporting structure with the metaphysis end ring 1, the bending radian of the bending auxiliary rods 8 is close to the calf radian of a patient, the main connecting rod 4 can better adapt to the calf of the patient, the fixing effect is good, the stability is strong, and the angle between the main connecting rod 4 and the first supporting rod 2 can be adjusted according to the specific part of the patient by arranging the first universal joint 3, through second universal joint 6 and third universal joint 7, can adjust the position of crooked auxiliary rod 8 in main connecting rod 4 both sides, through setting up fourth universal joint 9, can adjust fixing needle 10 according to the fracture position.
The axes of the first support rod 2 and the second support rod 5 of the embodiment are parallel and have the same structure, the end parts of the first support rod 2 and the second support rod 5 are respectively fixed with the metaphysis ring 1 in a threaded connection way, specifically, a plurality of through holes 11 are arranged on the side surface of the metaphysis ring 1 at intervals along the circumferential direction, the through hole 11 in the middle part of the metaphysis ring 1 and the through holes 11 at the two ends of the metaphysis ring 1 are respectively matched and inserted with a fixing part, the first support rod 2 and the second support rod 5 are respectively fixed with the corresponding fixing parts in a threaded connection way, the fixing parts have the specific structure that the fixing parts comprise threaded rods 12 inserted in the through holes 11, threaded sleeves 13 with internal threads are coaxially and integrally formed on the threaded rods 12, a locking nut 14 is screwed into the threaded rods 12 so as to fix the fixing parts and the metaphysis ring 1, external threads are formed on the end parts of the first support rod 2 and the second support rod 5, and the screw thread is connected in the thread bush 13, thus realizing the fixation of the first supporting rod 2 and the second supporting rod 5 with the fixed part respectively.
The first universal joint 3 of the embodiment comprises a circular sliding seat 15 connected to a main connecting rod 4 in a sliding manner, a boss 16 is formed at the top of the circular sliding seat 15, a clamping unit used for clamping the first supporting rod 2 is arranged on the boss 16, a limiting unit used for limiting the sliding of the circular sliding seat 15 is installed on the circular sliding seat 15, and the limiting unit has the specific structure that the limiting unit comprises a sliding hole 24 penetrating through the circular sliding seat 15, the main connecting rod 4 is connected in the sliding hole 24 in a sliding manner, a first threaded hole 17 is formed in the side surface of the circular sliding seat 15, the first threaded hole 17 is communicated with the sliding hole 16, a limiting bolt 18 is connected in the first threaded hole 17 in a threaded manner, and the limiting bolt 18 moves and abuts against the main connecting rod 4 by rotating the limiting bolt 18, so that the sliding of the circular sliding seat 15 is limited; the clamping unit has the specific structure that the clamping unit comprises a second threaded hole 19 formed in the circular slide seat 15, the axis of the second threaded hole 19 is the same as that of the circular slide seat 15, a locking screw 20 is connected in the second threaded hole 19 in an internal thread manner, a rotating head 21 is fixedly connected to one end, far away from the circular slide seat 15, of the locking screw 20, a pressing circular plate 22 is coaxially arranged between the rotating head 21 and the circular slide seat 15, a circular hole penetrates through the middle part of the pressing circular plate 22, the locking screw 20 is sleeved in the circular hole, a clamping groove 23 used for clamping and fixing the first supporting rod 2 is formed in one end face, close to the circular slide seat 15, of the pressing circular plate 22, the rotating head 21 is rotated, the locking screw 20 rotates to drive the rotating head 21 to move, the rotating head 21 abuts against the pressing circular plate 22, and the clamping groove 23 on the pressing circular plate 22 clamps the first supporting rod 2, so that the first supporting rod 2 and the pressing circular plate 22 are fixed.
Specifically, first universal joint 3, second universal joint 6, third universal joint 7 and fourth universal joint 9 are the same structure, first universal joint 3, circular slide 15 of second universal joint 6 and fourth universal joint 9 is sliding connection respectively on main connecting rod 4, circular slide 15 of two third universal joints 7 is sliding connection respectively on second bracing piece 5, the joint is respectively on the joint unit of third universal joint 7 and the joint unit of second universal joint 6 in the both ends of crooked auxiliary rod 8, the joint unit joint of fourth universal joint 9 has fixed needle 10.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the protection of the claims of the present invention.
Claims (8)
1. An external tibial-fibular metaphysis fixator with angular stabilization, comprising: comprises a metaphysis ring with a half-arc shape, the middle part of the metaphysis ring is fixedly connected with a first supporting rod, the first supporting rod is arranged in a first universal joint, the first universal joint is connected on the main connecting rod in a sliding way, the first supporting rod is parallel to the axis of the main connecting rod, two ends of the metaphysis end ring are fixedly connected with second supporting rods respectively, one end of the main connecting rod, which is far away from the metaphysis end ring, is connected with two second universal joints in a sliding way, the two second supporting rods are connected with third universal joints in a sliding way respectively, two bending auxiliary rods are arranged on two sides of the main connecting rod and on the two third universal joints respectively, the two ends of the bending auxiliary rod are respectively arranged between the third universal joint and the second universal joint, the main connecting rod is connected with a plurality of fourth universal joints in a sliding mode, and each fourth universal joint is provided with a fixing needle used for fixing a fracture part.
2. The angularly stable tibiofibular metaphyseal external fixator of claim 1, wherein: the axes of the first support rod and the second support rod are parallel and have the same structure, and the end parts of the first support rod and the second support rod are respectively fixed with a metaphysis end ring in a threaded connection mode.
3. A angularly stable external tibial metaphysis anchor according to claim 2, wherein: a plurality of through holes are formed in the side face of the metaphyseal end ring at intervals along the circumferential direction of the metaphyseal end ring, the through holes in the middle of the metaphyseal end ring and the through holes at the two ends of the metaphyseal end ring are respectively matched and spliced with fixing parts, and the first supporting rod and the second supporting rod are respectively fixed with the corresponding fixing parts in a threaded connection mode.
4. A angularly stable external tibial metaphysis anchor according to claim 3, wherein: the fixing part comprises a threaded rod inserted in the through hole, a threaded sleeve with internal threads is coaxially and integrally formed on the threaded rod, a locking nut is screwed into the threaded rod to fix the fixing part and the metaphysis end ring, external threads are formed at the end parts of the first supporting rod and the second supporting rod, and the first supporting rod and the second supporting rod are in threaded connection in the threaded sleeve to fix the fixing part and the first supporting rod and the second supporting rod respectively.
5. The angularly stable tibiofibular metaphyseal external fixator of claim 1, wherein: first universal joint includes sliding connection in the circular slide on the main connecting rod, the top of circular slide forms the boss, be provided with the joint unit that is used for the first bracing piece of joint on the boss, install on the circular slide and be used for restricting its gliding spacing unit.
6. The angularly stable tibiofibular metaphyseal external fixator of claim 5, wherein: first universal joint, second universal joint, third universal joint and fourth universal joint are the same structure, first universal joint and, the circular slide of second universal joint and fourth universal joint be sliding connection respectively on the main connecting rod, two the circular slide of third universal joint is sliding connection respectively on the second bracing piece, the both ends difference joint of crooked auxiliary rod is on the joint unit of third universal joint and the joint unit of second universal joint, the joint unit joint of fourth universal joint has fixed needle.
7. The angularly stable tibiofibular metaphyseal external fixator of claim 5, wherein: the limiting unit comprises a sliding hole penetrating through the circular sliding seat, the main connecting rod is connected to the inside of the sliding hole in a sliding mode, a first threaded hole communicated with the sliding hole is formed in the side face of the circular sliding seat, a limiting bolt is connected to the inner thread of the first threaded hole, and the limiting bolt moves and abuts against the main connecting rod through rotation of the limiting bolt so as to limit the sliding of the circular sliding seat.
8. The angularly stable tibiofibular metaphyseal external fixator of claim 7, wherein: the joint unit is including seting up in the second screw hole the same rather than the axis on the circular slide, second screw hole female connection has locking screw, locking screw keeps away from the one end of circular slide and has linked firmly the rotating head, the coaxial plectane that compresses tightly that is provided with between rotating head and the circular slide, the middle part that compresses tightly the plectane runs through there is the round hole, locking screw cup joint in the round hole, compress tightly the draw-in groove that offers the fixed first bracing piece of joint on the plectane is close to the terminal surface of circular slide, rotate the rotating head, rotate through locking screw and drive the rotating head extrusion compress tightly the plectane, compress tightly the draw-in groove chucking on the plectane first bracing piece to constitute first bracing piece and compress tightly the fixing between the plectane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121252528.XU CN215129852U (en) | 2021-06-06 | 2021-06-06 | Tibiofibular metaphysis external fixator with stable angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121252528.XU CN215129852U (en) | 2021-06-06 | 2021-06-06 | Tibiofibular metaphysis external fixator with stable angle |
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| Publication Number | Publication Date |
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| CN215129852U true CN215129852U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121252528.XU Active CN215129852U (en) | 2021-06-06 | 2021-06-06 | Tibiofibular metaphysis external fixator with stable angle |
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2021
- 2021-06-06 CN CN202121252528.XU patent/CN215129852U/en active Active
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