CN210301179U - Triangle telescopic external fixing frame for bone recovery - Google Patents
Triangle telescopic external fixing frame for bone recovery Download PDFInfo
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- CN210301179U CN210301179U CN201920498432.8U CN201920498432U CN210301179U CN 210301179 U CN210301179 U CN 210301179U CN 201920498432 U CN201920498432 U CN 201920498432U CN 210301179 U CN210301179 U CN 210301179U
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Abstract
The utility model discloses a triangle retractable skeleton rehabilitation external fixation frame, which comprises a pair of retractable fixation ring modules and a detachable link mechanism, wherein the retractable fixation ring modules are connected through six detachable link mechanisms, and a fixture for clamping steel needles is fixed on the retractable fixation ring modules; the telescopic fixing ring module comprises a corner external member, a linear insert, a fixing bolt and a tightening nut, the size of the fixing ring can be adjusted by adjusting the position of the nut and removing a connecting piece, and the applicability and compatibility of the device are improved; the design of the detachable electric push rod is provided, the replacing connecting device is connected to the two ends of the linear push rod through the bolts firstly, the positions of the two end points are kept unchanged, then the electric push rod is detached, and the replacing screw rod device is used for replacing.
Description
Technical Field
The utility model relates to an orthopedic correction, recovered field, more specifically the theory that says so especially relates to a recovered external fixation frame of triangle retractable skeleton.
Background
When the operation of surgery skeleton was treated, indispensable during fixing device, traditional fixed mode generally adopted the steel sheet internal fixation, had also appeared now the less external fixation's of wound treatment mode. The commonly used external fixation devices are mainly Ilizarov external fixation devices and Taylor skeletons. The Ilizarov technique uses a multi-planar thin k-wire that penetrates the limb and bone tissue and connects to an annular fixator. The taylor improves upon the ILizarov external fixation system by obliquely attaching six telescoping extension rods to the proximal and distal rings and allowing free rotation at the attachment points, so that once the length of one of the extension rods is adjusted, one ring changes position relative to the other. The length of the extension rod relative to the deformation parameters can be calculated by using computer program software, and Taylor space frames can be constructed in advance by simulating any deformation to treat and correct various simple or complex fractures and deformations. The structure of the Taylor framework is as follows:
1. the upper and lower rings, which may also be referred to as the proximal and distal rings.
2. Six extension rods with adjustable lengths, and the length of each extension rod can be directly read.
3. The extension rod is connected with the universal rotary joint of the ring.
4. A steel needle and a needle clip for connecting the fixing ring and the bone segment.
At present, a series of fixing rings with different types and fixed sizes are used in the field of bone orthopedic rehabilitation, and doctors select the fixing rings with specific types for patients according to the basic conditions of the patients in practical application. When the fixing ring is selected, the selection place is too large, the action limitation of a patient during rehabilitation can be increased, hidden dangers are increased, and if the selection place is too small, the installation difficulty of the steel needle and the extension rod can be increased, and even the fixing ring cannot be used. Due to the high production cost, it is not practical to require hospitals to backup taylor frames of each model, and the timeliness is difficult to guarantee through the mode of ordering from manufacturers by hospitals. Meanwhile, due to the actual condition of a patient, the best effect is difficult to achieve if the fixing frame with the non-adjustable size is used.
Currently used in the field of orthopedic rehabilitation of bones are helical taylor frames, in which the patient is first fitted with a fixation ring during clinical surgery and connected by taylor rods after the position of the distal and proximal rings has been determined. The length of the Taylor rods is changed by spirally adjusting the distance between the stud and the sleeve, and the telescopic length of the six Taylor rods is gradually adjusted, so that the relative pose between the near-end ring and the far-end ring can be gradually corrected, and the resetting, correction and fixation of the skeleton are realized. However, the use of screw-adjustable taylor rods is not clinically effective enough, especially when the fracture dislocation is large, the installation is too slow during the operation. Meanwhile, the precision of the screw adjustment method is not high enough, and in order to ensure the precision during the operation, the screw adjustment method can be used for adjustment in an electrically driven mode. However, electrically driven telescopic devices such as electric push rods and linear motors cannot well control the distance during installation, and may require multiple fine adjustments during installation, and the effect is not good.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve and use some solid fixed rings of row to select when using in the orthopedic recovered field of current skeleton, gu fixed ring's size is hardly adjusted and manual regulation is too slow, add the problem that electric putter is unfavorable for the postoperative use, a recovered external fixation frame of triangle retractable skeleton has been proposed, the size of mount can be adjusted through adjusting nut's position and the mode of getting rid of the connecting piece, and both can adjust the pole length through the electric putter drive, also can be through spiral regulation length, can also be convenient dismantle after the motor is adjusted and is accomplished.
The utility model discloses a following technical scheme realizes above-mentioned purpose: a triangular telescopic external fixing frame for skeletal rehabilitation comprises a pair of telescopic fixing ring modules and detachable connecting rod mechanisms, wherein the telescopic fixing ring modules are connected through six detachable connecting rod mechanisms, and a clamp for clamping a steel needle is fixed on the telescopic fixing ring modules;
the telescopic fixing ring module comprises three corner kits, three linear inserts, fixing bolts and tightening nuts, and fixing holes are formed in each of the corner kits and the linear inserts at equal intervals; each corner external member is provided with two sleeve sides which are arranged at 60 degrees, the end surface of each sleeve side is provided with a linear deep groove, the shape of the linear deep groove is the same as the shape of the tangent plane of the linear insert, one side of the linear insert is inserted into the linear deep groove of each sleeve side of each corner external member, and a fixing hole at the end part of the sleeve side of the corner external member is fixedly connected with a fixing hole at the end part of the linear insert through a fixing bolt and a tightening nut; the three corner kits and the three linear inserts are connected in a staggered manner to form the whole telescopic fixing ring module;
the detachable connecting rod mechanism comprises an electric push rod, a coupler, a two-way connecting piece, an upper fixing ring, a lower fixing ring, a fine adjustment type connecting piece, a spiral connecting rod, a universal joint, a pin shaft type connecting piece and a sleeve connecting piece, wherein the lower end of the spiral connecting rod is connected with a telescopic fixing ring module through the universal joint; a circle of mounting holes uniformly distributed along the circumferential direction are formed in the fine adjustment type connecting piece, the upper end of the spiral connecting rod is connected with the lower end of the coupler, the upper end of the coupler is connected with the lower end of the electric push rod, and the upper end of the electric push rod is connected with the lower end of the bidirectional connecting piece; the upper end of the two-way connecting piece is a universal joint connecting end, the universal joint connecting end of the two-way connecting piece is connected with another telescopic fixing ring module through a universal joint, the left side and the right side of the two-way connecting piece are columnar protrusions, threaded holes are formed in end faces of the columnar protrusions on the left side and the right side of the two-side connecting piece, a push rod fixing groove is formed in the bottom of the two-way connecting piece, fixing holes used for fixing the upper end of an electric push rod are formed in two side faces of the push rod fixing groove, and the upper end of the electric push; the two sides of each two-way connecting piece are connected with a sleeve connecting piece, the upper end of each sleeve connecting piece is fixed at the cylindrical protruding threaded hole parts at the two sides of each two-way connecting piece through bolts, the lower end of each sleeve connecting piece is provided with an inserting groove, the upper end of each pin shaft type connecting piece is inserted into the inserting groove of each sleeve connecting piece, the lower end of each sleeve connecting piece and the upper end of each pin shaft type connecting piece are provided with a row of fixing holes, and the lower end of each sleeve connecting piece and the upper end of each pin shaft type connecting piece are fixed through; the total length of the sleeve connecting piece and the pin shaft type connecting piece is determined by the position of the bolt penetrating through the fixing hole, and the lower end of the pin shaft type connecting piece is ensured to be connected with the fine adjustment type connecting piece through the bolt during positioning.
Furthermore, the whole telescopic fixing ring module is in a triangular shape, the vertex of any one telescopic fixing ring module is connected with one ends of two detachable connecting rod mechanisms, and the other ends of the two detachable connecting rod mechanisms are connected with two vertices of the other telescopic fixing ring module, which are closest to the vertex.
Furthermore, the corner suite and the linear insert are all provided with three.
Furthermore, the size of the telescopic fixing ring module is adjusted by adjusting the depth of the linear insert inserted into the sleeve side of the corner sleeve and the inserting position of the fixing bolt.
Further, the detachable connecting rod mechanism and the telescopic fixing ring module are connected through bolts.
Further, the upper end of the upper fixing ring, the lower fixing ring and the upper end of the spiral connecting rod are in clearance fit, threaded positioning holes are formed in the side faces of the upper fixing ring and the lower fixing ring, and the positioning bolts penetrate through the positioning holes to fix the upper fixing ring and the lower fixing ring on the spiral connecting rod.
Further, the spiral connecting rod is a telescopic rod, the lower end of the spiral connecting rod is a spiral sleeve, the upper end of the spiral connecting rod is a spiral rod with a nut, the lower end of the spiral rod is inserted into the spiral sleeve, and the spiral connecting rod can be extended and shortened by rotating the nut.
Furthermore, the top of hob is the threaded straight-bar, be equipped with on upper fixed ring and the lower fixed ring with the external screw thread matched with internal thread of straight-bar, upper fixed ring and lower fixed ring realize the adjustment of upper fixed ring and lower fixed ring position on the straight-bar through external screw thread and internal screw thread cooperation.
Furthermore, the lower end of the pin shaft type connecting piece is provided with a vertical boss, the vertical boss is provided with a fixing hole, and the pin shaft type connecting piece is fixedly connected with the mounting hole on the fine adjustment type connecting piece through a bolt penetrating through the fixing hole on the vertical boss.
The beneficial effects of the utility model reside in that: 1. the utility model discloses a solid fixed ring module of telescopic can adjust solid fixed ring's size through adjusting nut's position, the mode of flexible corner piece and sharp piece, improves adaptability.
2. The utility model relates to a size that solid fixed ring module can be adjusted through flexible mode to the solid fixed ring module can match different patients' use size, match the different requirements of limb from top to bottom, carries the high adaptability of product.
3. The utility model relates to a solid fixed ring module of telescopic realizes the solid fixed ring's of adjustment size through telescopic mode, can not the overlap between the connection piece.
4. Through using the utility model discloses a telescopic solid fixed ring module, the doctor need not to select the solid fixed ring of specific model for the patient, but only need adjust the size of telescopic solid fixed ring module according to patient's shank shape or thickness, reduces the action restriction when the patient is recovered, reduces the hidden danger.
5. The utility model discloses can reduce the model demand of hospital to the taylor frame, do not need the taylor frame of the various models of purchase, only need to change the regulation that the mount size just can be realized to suitable this device, greatly reduced the purchasing cost of hospital.
6. The detachable connecting rod mechanism of the utility model can adjust the rod length through the driving of the electric push rod, can adjust the length through the screw, and can be conveniently detached after the motor is adjusted; during clinical operation, in order to realize quick connection between the near-end ring and the far-end ring, manual fine adjustment can be realized through a thread pair; in order to realize rapid and accurate positioning, the electric push rod can be controlled by the motor to adjust; after the clinical adjustment is completed, the life of the patient is greatly affected due to the redundancy of the six electric push rod lines and the too large quality.
7. The utility model provides a can dismantle electric putter's design, pass through bolted connection at linear push rod's both ends replacing connecting device earlier, keep both ends point position unchangeable, demolish electric putter again, use the screw rod device that replaces to replace.
Drawings
Fig. 1 is a schematic view of the overall usage state of the triangular telescopic external skeletal rehabilitation fixing frame of the present invention.
Fig. 2 is a schematic view of the whole using state of the electric putter of the present invention.
Fig. 3 is a schematic view of the whole usage state of the present invention when the electric putter is not used.
Fig. 4 is a schematic diagram of the whole mechanism of the telescopic fixing ring module of the present invention.
Fig. 5 is a schematic structural view of a corner kit in the retractable fixing ring module according to the present invention.
Fig. 6 is a schematic structural view of a linear insert in the telescopic fixing ring module of the present invention.
Fig. 7 is a schematic structural diagram of the detachable link mechanism of the present invention.
Fig. 8 is a schematic structural view of the screw-type connecting rod of the present invention.
In the figure, 1-a telescopic fixing ring module, 2-a detachable link mechanism, 3-a stepless adjustment needle threading clamp, 4-a corner suite, 5-a linear insert, 6-a fixing nut, 7-a fixing bolt, 35-a bidirectional connecting piece, 36-an electric push rod, 37-a coupler, 38-an upper fixing ring, 39-a fine adjustment connecting piece, 40-a spiral connecting rod, 41-a universal joint, 42-a lower fixing ring, 43-a pin shaft type connecting piece, 44-a sleeve connecting piece, 45-a spiral rod, 46-a spiral sleeve and 47-a spiral cap.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1-3, a recovered external fixation frame of triangle retractable skeleton, includes solid fixed ring module 1 of telescopic and removable link mechanism 2, the solid fixed ring module 1 of telescopic is provided with a pair of that the longitudinal symmetry set up, and the solid fixed ring module 1 of telescopic is connected through six removable link mechanisms 2 for the anchor clamps of clamping steel needle are fixed on solid fixed ring module 1 of telescopic.
As shown in fig. 4 to 6, the telescopic fixing ring module 1 comprises a corner kit 4, a linear insert 5, a fixing bolt 7 and a tightening nut 6, wherein the corner kit 4 and the linear insert 5 are respectively provided with three fixing holes, and each of the corner kit 4 and the linear insert 5 is provided with fixing holes arranged at equal intervals; each corner sleeve piece 4 is provided with two sleeve sides arranged at 60 degrees, the end face of each sleeve side is provided with a linear deep groove, the shape of the linear deep groove is the same as the shape of the tangent plane of the linear insert 5, one side of the linear insert 5 is inserted into the linear deep groove of each two sleeve sides of each corner sleeve piece 4, and a fixing hole at the end part of each sleeve side of the corner sleeve piece 4 is fixedly connected with a fixing hole at the end part of the linear insert 5 through a fixing bolt 7 and a tightening nut 6; the three corner kits 4 and the three linear inserts 5 are connected in a staggered manner to form the whole telescopic fixing ring module;
the telescopic fixing ring module 1 is integrally triangular, the vertex of any one telescopic fixing ring module 1 is connected with one end of each detachable connecting rod mechanism 2, and the other end of each detachable connecting rod mechanism 2 is connected with two vertices of the other telescopic fixing ring module 1, which are closest to the vertex.
The corner suite 4 and the linear insert 5 are all provided with three. The size of the telescopic fixing ring module is adjusted by adjusting the depth of the linear insert 5 inserted into the sleeve side of the corner sleeve 4 and the inserting position of the fixing bolt 7. The detachable connecting rod mechanism is connected with the telescopic fixing ring module through a bolt.
As shown in fig. 7 to 8, the detachable link mechanism 2 includes an electric push rod 36, a coupler 37, a two-way connector 35, an upper fixing ring 38, a lower fixing ring 42, a fine adjustment connector 39, a screw-type connecting rod 40, a universal joint 41, a pin-shaft connector 43 and a sleeve connector 44, the lower end of the screw-type connecting rod 40 is connected with a telescopic fixing ring module through the universal joint 41, the upper fixing ring 38, the fine adjustment connector 39 and the lower fixing ring 42 are sequentially sleeved on the upper end of the screw-type connecting rod 40, and the fine adjustment connector 39 is positioned on the screw-type connecting rod 40 through the positioning of the upper fixing ring 38 and the lower fixing ring 42; a circle of mounting holes which are uniformly distributed along the circumferential direction are formed in the fine adjustment type connecting piece 39, the upper end of the spiral connecting rod 40 is connected with the lower end of the coupler 37, the upper end of the coupler 37 is connected with the lower end of the electric push rod 36, and the upper end of the electric push rod 36 is connected with the lower end of the two-way connecting piece 35; the upper end of the bidirectional connecting piece 35 is a universal joint 41 connecting end, the universal joint 41 connecting end of the bidirectional connecting piece 35 is connected with another telescopic fixing ring module through a universal joint 41, the left side and the right side of the bidirectional connecting piece 35 are columnar protrusions, threaded holes are formed in the end faces of the columnar protrusions on the left side and the right side of the bilateral connecting piece, a push rod fixing groove is formed in the bottom of the bidirectional connecting piece 35, fixing holes used for fixing the upper end of the electric push rod 36 are formed in two side faces of the push rod fixing groove, and the upper end of the electric push rod 36 extends into the push rod fixing groove and; the two sides of each bidirectional connecting piece 35 are connected with a sleeve connecting piece 44, the upper end of each sleeve connecting piece 44 is fixed at the cylindrical protruding threaded hole parts at the two sides of the bidirectional connecting piece 35 through bolts, the lower end of each sleeve connecting piece 44 is provided with an inserting groove, the upper end of each pin shaft type connecting piece 43 is inserted in the inserting groove of each sleeve connecting piece 44, the lower end of each sleeve connecting piece 44 and the upper end of each pin shaft type connecting piece 43 are provided with a row of fixing holes, and the lower end of each sleeve connecting piece 44 and the upper end of each pin shaft type connecting piece 43 are fixed through bolts penetrating through the fixing; the total length of the bush connection 44 and the pin connection 43 is determined by the position of the bolt through the fastening hole, which ensures that the lower end of the pin connection 43 and the fine adjustment connection 39 can be connected by means of the bolt when positioned.
The upper end of the upper fixing ring 38 and the upper end of the lower fixing ring 42 are in clearance fit with the upper end of the spiral connecting rod 40, the side faces of the upper fixing ring 38 and the lower fixing ring 42 are provided with positioning holes with threads, and the positioning bolts penetrate through the positioning holes to fix the upper fixing ring 38 and the lower fixing ring 42 on the spiral connecting rod 40.
Spiral connecting rod 40 is the telescopic link, and 40 lower extremes of spiral connecting rod are spiral shell 46, and 40 upper ends of spiral connecting rod are the hob 45 that has the nut, and in the lower extreme of hob 45 inserted the spiral shell 46, the extension and the shortening of spiral connecting rod 40 can be realized to rotatory nut.
The top of the screw rod 45 is a straight rod with threads, the upper fixing ring 38 and the lower fixing ring 42 are provided with internal threads matched with the external threads of the straight rod, and the upper fixing ring 38 and the lower fixing ring 42 are matched with the internal threads through the external threads to adjust the positions of the upper fixing ring 38 and the lower fixing ring 42 on the straight rod.
The lower end of the pin shaft type connecting piece 43 is provided with a vertical boss, the vertical boss is provided with a fixing hole, and the pin shaft type connecting piece 43 is fixedly connected with a bolt passing through the fixing hole on the vertical boss and the mounting hole on the fine adjustment type connecting piece 39.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.
Claims (8)
1. The utility model provides a recovered external fixation frame of triangle retractable skeleton which characterized in that: the device comprises a telescopic fixing ring module (1) and detachable connecting rod mechanisms (2), wherein the telescopic fixing ring module (1) is provided with a pair of fixing rings which are arranged up and down symmetrically, the telescopic fixing ring modules (1) are connected through six detachable connecting rod mechanisms (2), and a clamp (3) for clamping a steel needle is fixed on the telescopic fixing ring module (1);
the telescopic fixing ring module (1) comprises three corner kits (4), three linear inserts (5), three fixing bolts (7) and three tightening nuts (6), wherein fixing holes are formed in the corner kits (4) and the linear inserts (5) at equal intervals; each corner sleeve piece (4) is provided with two sleeve sides arranged at 60 degrees, the end face of each sleeve side is provided with a linear deep groove, the shape of the linear deep groove is the same as the shape of the tangent plane of the linear insert (5), one side of the linear insert (5) is inserted into the linear deep groove of each two sleeve sides of each corner sleeve piece (4), and a fixing hole at the end part of the sleeve side of the corner sleeve piece (4) is fixedly connected with a fixing hole at the end part of the linear insert (5) through a fixing bolt (7) and a screwing nut (6); the three corner kits (4) and the three linear inserts (5) are connected in a staggered manner to form the whole telescopic fixing ring module;
the detachable connecting rod mechanism (2) comprises an electric push rod (36), a coupler (37), a two-way connecting piece (35), an upper fixing ring (38), a lower fixing ring (42), a fine adjustment type connecting piece (39), a spiral connecting rod (40), a universal joint (41), a pin shaft type connecting piece (43) and a sleeve connecting piece (44), the lower end of the spiral connecting rod (40) is connected with a telescopic fixing ring module through the universal joint (41), the upper fixing ring (38), the fine adjustment type connecting piece (39) and the lower fixing ring (42) are sequentially sleeved at the upper end of the spiral connecting rod (40), and the fine adjustment type connecting piece (39) realizes the positioning of the spiral connecting rod (40) through the positioning of the upper fixing ring (38) and the lower fixing ring (42); a circle of mounting holes which are uniformly distributed along the circumferential direction are formed in the fine adjustment type connecting piece (39), the upper end of the spiral connecting rod (40) is connected with the lower end of the coupler (37), the upper end of the coupler (37) is connected with the lower end of the electric push rod (36), and the upper end of the electric push rod (36) is connected with the lower end of the bidirectional connecting piece (35); the upper end of the bidirectional connecting piece (35) is a universal joint (41) connecting end, the universal joint (41) connecting end of the bidirectional connecting piece (35) is connected with another telescopic fixing ring module through the universal joint (41), the left side and the right side of the bidirectional connecting piece (35) are columnar protrusions, threaded holes are formed in the end faces of the columnar protrusions on the left side and the right side of the bilateral connecting piece, a push rod fixing groove is formed in the bottom of the bidirectional connecting piece (35), fixing holes used for fixing the upper end of an electric push rod (36) are formed in two side faces of the push rod fixing groove, and the upper end of the electric push rod (36) extends into the push rod fixing groove and is fixedly; the two sides of each bidirectional connecting piece (35) are connected with a sleeve connecting piece (44), the upper end of each sleeve connecting piece (44) is fixed at the cylindrical protruding threaded hole positions at the two sides of each bidirectional connecting piece (35) through bolts, the lower end of each sleeve connecting piece (44) is provided with an inserting groove, the upper end of each pin shaft type connecting piece (43) is inserted into the inserting groove of each sleeve connecting piece (44), the lower end of each sleeve connecting piece (44) and the upper end of each pin shaft type connecting piece (43) are provided with a row of fixing holes, and the lower end of each sleeve connecting piece (44) and the upper end of each pin shaft type connecting piece (43) are fixed through bolts penetrating through the; the total length of the sleeve connection (44) and the pin connection (43) is determined by the position of the bolt passing through the fixing hole, and the lower end of the pin connection (43) and the fine adjustment connection (39) can be connected through the bolt when positioning.
2. The triangular telescopic external skeletal rehabilitation fixture according to claim 1, wherein: the telescopic fixing ring module (1) is integrally triangular, the vertex of any one telescopic fixing ring module (1) is connected with one ends of two detachable connecting rod mechanisms (2), and the other ends of the two detachable connecting rod mechanisms (2) are connected with two vertices of another telescopic fixing ring module (1) which are closest to the vertex.
3. The triangular telescopic external skeletal rehabilitation fixture according to claim 1, wherein: the size of the telescopic fixing ring module is adjusted by adjusting the depth of the linear insert (5) inserted into the sleeve side of the corner sleeve (4) and the inserting position of the fixing bolt (7).
4. The triangular telescopic external skeletal rehabilitation fixture as claimed in claim 2, wherein: the detachable connecting rod mechanism is connected with the telescopic fixing ring module through a bolt.
5. The triangular telescopic external skeletal rehabilitation fixture according to claim 1, wherein: the upper end of the upper fixing ring (38) and the upper end of the lower fixing ring (42) are in clearance fit with the upper end of the spiral connecting rod (40), the side faces of the upper fixing ring (38) and the lower fixing ring (42) are provided with positioning holes with threads, and the positioning bolts penetrate through the positioning holes to fix the upper fixing ring (38) and the lower fixing ring (42) on the spiral connecting rod (40).
6. The triangular telescopic external skeletal rehabilitation fixture according to claim 1, wherein: spiral connecting rod (40) are the telescopic link, and spiral connecting rod (40) lower extreme is spiral shell (46), and spiral rod (45) for having the nut on spiral connecting rod (40), in the lower extreme of spiral rod (45) inserted spiral shell (46), the extension and the shortening of spiral connecting rod (40) can be realized to the rotatory nut.
7. The triangular telescopic external skeletal rehabilitation fixture according to claim 1, wherein: the top of hob (45) is the straight-bar of band screw thread, is equipped with the internal thread with the external screw thread matched with of straight-bar on upper fixed ring (38) and lower fixed ring (42), and upper fixed ring (38) and lower fixed ring (42) realize the adjustment of upper fixed ring (38) and lower fixed ring (42) position on the straight-bar through external screw thread and internal screw thread cooperation.
8. The triangular telescopic external skeletal rehabilitation fixture according to claim 1, wherein: the lower end of the pin shaft type connecting piece (43) is provided with a vertical boss, the vertical boss is provided with a fixing hole, and the pin shaft type connecting piece (43) is fixedly connected with a bolt passing through the fixing hole on the vertical boss and the mounting hole on the fine adjustment type connecting piece (39).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920498432.8U CN210301179U (en) | 2019-04-14 | 2019-04-14 | Triangle telescopic external fixing frame for bone recovery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920498432.8U CN210301179U (en) | 2019-04-14 | 2019-04-14 | Triangle telescopic external fixing frame for bone recovery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110141335A (en) * | 2019-04-14 | 2019-08-20 | 浙江工业大学 | A kind of bone rehabilitation external fixing rack of triangle extension type |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110141335A (en) * | 2019-04-14 | 2019-08-20 | 浙江工业大学 | A kind of bone rehabilitation external fixing rack of triangle extension type |
| CN110141335B (en) * | 2019-04-14 | 2024-04-26 | 浙江工业大学 | Triangular telescopic skeleton rehabilitation external fixation frame |
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