CN112603506A - Electric six-connecting-rod type external fixator for bones - Google Patents
Electric six-connecting-rod type external fixator for bones Download PDFInfo
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- CN112603506A CN112603506A CN202011524913.5A CN202011524913A CN112603506A CN 112603506 A CN112603506 A CN 112603506A CN 202011524913 A CN202011524913 A CN 202011524913A CN 112603506 A CN112603506 A CN 112603506A
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 28
- 238000006073 displacement reaction Methods 0.000 claims abstract description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 206010053652 Limb deformity Diseases 0.000 description 1
- 206010061225 Limb injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/62—Ring frames, i.e. devices extending around the bones to be positioned
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- Orthopedic Medicine & Surgery (AREA)
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Abstract
The invention discloses an electric six-connecting-rod type external bone fixator, which comprises a near-end ring, a far-end ring, six identical electric supporting rods, a universal joint, a common clamping piece, a motion controller and a user terminal, wherein each electric supporting rod comprises: nut sleeve, displacement sensor, small-size display screen, screw rod, miniature gear motor, motor housing, self-locking switch. Three common clamping pieces are uniformly distributed and fixed on the near-end ring and the far-end ring respectively, the outer end of each common clamping piece is connected with a universal joint, and each universal joint is connected with an electric supporting rod, so that the electric supporting rods are arranged outside the near-end ring and the far-end ring; the nut sleeve of one electric support rod is hinged to the outer side of the motor shell of the adjacent electric support rod; the motion controller is connected with the miniature speed reducing motor of any one electric supporting rod through a driving wire, and the user terminal is used for inputting an electronic prescription. The invention realizes the digital adjustment of the external bone fixator by controlling the miniature speed reducing motor through the controller, and avoids frequent rod replacement.
Description
Technical Field
The invention belongs to the technical field of external bone fixator, and particularly relates to an electric six-connecting-rod type external bone fixator.
Background
The external bone fixator who uses at present in clinical treatment generally is the mechanical tool of manual adjustment, does not possess functions such as digital control, measurement, also has the digital control of a lot of external bone fixators to this and improves, for example the utility model patent of bulletin No. CN206641900U, its basis is the taylor support, so also including taylor support bracing piece length stroke limited, often need come the shortcoming of adjusting through changing the bracing piece, the power is located inside the bracing piece simultaneously, increases the cost of manufacture. In the invention patent with publication number CN106264690A, the taylor bracket is also used as a basis, which inherits the disadvantages of the taylor bracket, and the driving motors are required to be installed one by one when the supporting rod is adjusted, thereby greatly increasing the complexity of operation.
The Ortho-SUV external bone fixing frame invented by Russia at present can effectively increase the flexible stroke of bracing piece, has solved the problem that the taylor support needs often to change the bracing piece, but this mount only can manually be adjusted, and even bracing piece length also need rely on the doctor to pass through external instrument measurement, so has certain error.
In summary, the problem faced by the prior art is that the length change interval of the support rod of the external bone fixator is small, so that the support rod needs to be replaced frequently, manual adjustment and measurement of the support rod can cause human errors, the external bone fixation operation treatment effect is affected, and meanwhile, the operation difficulty is increased, so that the operation threshold is high, and the human resource is consumed.
Disclosure of Invention
The invention aims to provide an electric six-connecting-rod type external bone fixator which has a linked six-connecting-rod structure, is wide in spatial motion range and can realize digital adjustment.
In order to achieve the above purpose, the solution of the invention is: an electric six-connecting-rod type external bone fixator comprises a near-end ring, a far-end ring, an electric supporting rod, universal joints and common clamping pieces, wherein three common clamping pieces are uniformly distributed and fixed on the near-end ring and the far-end ring respectively, the positions of the three common clamping pieces on the near-end ring are staggered with the positions of the three common clamping pieces on the far-end ring, the common clamping pieces are straight connecting pieces which are clamped and fixed, the outer end of each common clamping piece extends out of the near-end ring and the far-end ring, the outer end of each common clamping piece is connected with one universal joint, and each universal joint is connected with one electric supporting rod, so that the electric supporting rod is arranged outside the near-end ring and the far-end ring;
each electric support rod comprises
A screw;
the motor shell is arranged at the end part of the screw rod and is fixedly connected with the universal joint;
the miniature speed reducing motor is arranged in the motor shell, and a motor shaft of the miniature speed reducing motor is fixedly connected with the end part of the screw rod;
a small display screen;
the nut sleeve is fixed with the small display screen and sleeved on the rod body of the screw rod, the rod body of the screw rod is provided with an external thread, and an internal thread matched with the external thread is arranged in the nut sleeve, so that the nut sleeve and the small display screen are connected to the screw rod in a sliding manner, the nut sleeve of one electric support rod is hinged to the outer side of the motor shell of the adjacent electric support rod, and the six electric support rods are connected and closed end to form the electric six-connecting-rod structure telescopic support frame;
the displacement sensor is arranged in the nut sleeve and displays the current length of the electric support rod through a small digital display screen on the outer side of the nut sleeve;
the self-locking switch is arranged outside the nut sleeve in a penetrating mode and can be used for manual rotation, so that the self-locking switch penetrates through the nut sleeve and abuts against the external thread of the screw rod, and the nut sleeve is positioned;
the external bone fixator further comprises a motion controller and a user terminal, wherein the user terminal is connected with the motion controller, the motion controller is connected to the miniature speed reducing motor of any one electric supporting rod through a driving wire, and the user terminal is used for inputting an electronic prescription.
Furthermore, one of the common clamping pieces on the near-end ring can be replaced by a Z-shaped clamping piece, the Z-shaped clamping piece is a connecting piece with a Z-shaped cross section and is clamped and fixed, and the Z-shaped clamping piece has a height difference relative to the common clamping piece.
Furthermore, the self-locking switch is a block body, a convex rod is arranged on the end face of the self-locking switch, the convex rod is provided with external threads, and an internal thread hole communicated with the screw rod is formed in the outer side of the nut sleeve and used for the convex rod to penetrate through and be matched with the screw rod.
Furthermore, the tail end of the convex rod is provided with a rubber pad.
Further, motor drive socket is seted up to the motor housing, the drive wire peg graft in motor drive socket realize with miniature gear motor's connection.
After the scheme is adopted, compared with the prior art, the invention has the beneficial effects that:
the invention is an external bone fixator used in external bone fixation technology for treating fracture, serious limb injury and deformity and reconstructing the function of the affected limb, a six-axis adjusting platform consisting of an electric six-connecting-rod structure telescopic support frame is adopted, a nut sleeve forms lifting motion on a screw rod, a sensor is arranged at the nut sleeve, and a motion controller can read the length information of the rod in real time and adjust the length of the support rod in real time so as to control the angle of the platform;
the electric six-connecting-rod structure telescopic support frame is characterized in that one side of a motor shell of every two adjacent electric support rods is connected with one side of a nut sleeve in an end-to-end mode through six electric support rods with the same structure by a 360-degree movable joint to form an end-to-end closed ring, the electric six-connecting-rod structure telescopic support frame is arranged outside a near-end ring and a far-end ring, so that the limit of the near-end ring and the far-end ring is eliminated, a screw rod of the electric six-connecting-rod structure telescopic support frame can extend out of the near-end ring and the far-end ring, the length of the screw rod is designed randomly, the stroke of the nut sleeve is further prolonged, the integral motion range of the external bone fixator is greatly improved, the problem that the rod needs to be frequently replaced in clinic due to the fact that the length stroke of the support rod of the traditional Taylo, the displacement sensor located at the position of the nut sleeve can feed back the length information of the supporting rod in real time, so that the manual measurement of the length of the supporting rod by means of an external tool is replaced, the error is reduced, the treatment effect is guaranteed, and the self-locking switch located at the position of the nut sleeve can effectively prevent a patient from shaking for a long time to generate offset after being worn.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a single electric supporting rod according to an embodiment of the present invention;
FIG. 3 is a schematic view of the connection between two adjacent electric support rods according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of an electric nut socket according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an electric self-locking switch according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a motion control system according to an embodiment of the present invention.
Description of reference numerals:
the device comprises a near-end ring 1, a far-end ring 2, an electric support rod 3, a screw rod 31, a motor shell 32, a motor drive socket 321, a small display screen 33, a nut sleeve 34, a self-locking switch 35, a convex rod 351, a universal joint 4, a common clamping piece 5 and a Z-shaped clamping piece 6.
Detailed Description
The invention provides an electric six-connecting-rod type external bone fixator, which is described in detail below by combining the figures and specific embodiments for convenience of description.
An embodiment:
an electric six-link type external fixator for bones, please refer to fig. 1, comprising a near end ring 1, a far end ring 2, an electric support rod 3, a universal joint 4, common clamping pieces 5 and Z-shaped clamping pieces 6, wherein three common clamping pieces 5 are uniformly distributed and fixed on the near end ring 1 and the far end ring 2, the positions of the three common clamping pieces 5 on the near end ring 1 are staggered with the positions of the three common clamping pieces 5 on the far end ring 2, in one embodiment, one common clamping piece 5 on the near end ring 1 can be replaced by one Z-shaped clamping piece 6, namely, two common clamping pieces 5 and one Z-shaped clamping piece 6 are uniformly distributed and fixed on the near end ring 1, three common clamping pieces 5 are uniformly distributed and fixed on the far end ring 2, the positions of the two common clamping pieces 5 and one Z-shaped clamping piece 6 on the near end ring 1 are staggered with the positions of the three common clamping pieces 5 on the far end ring 2, ordinary clamping piece 5 is straight, by the fixed connection piece of centre gripping, Z type clamping piece 6 is transversal personally submits the Z type, by the fixed connection piece of centre gripping, Z type clamping piece 6 is relative ordinary clamping piece 5 has the difference in height, and this difference in height can provide extra adjustment space when the external bone fixer uses, and simultaneously, Z type clamping piece 6 can play the sign effect, because six connecting rod structure telescopic support's whole is comparatively symmetrical, unanimous, so inconvenient recognition needs the position of the electric support pole 3 of operation during the use, consequently sets up Z type clamping piece 6 and is convenient for the user to go to distinguish the position of electric support pole 3 through Z type clamping piece 6. The outer ends of the common clamping pieces 5 and the Z-shaped clamping pieces 6 extend out of the near-end ring 1 and the far-end ring 2, the outer ends of the common clamping pieces 5 and the Z-shaped clamping pieces 6 are connected with one universal joint 4, and each universal joint 4 is connected with one electric support rod 3, so that the electric support rods 3 are arranged outside the near-end ring 1 and the far-end ring 2;
the quantity of the number of the electric support rods 3 is six, the structure of each electric support rod 3 is completely the same, and in combination with the figure 2, each electric support rod 3 comprises
A screw 31 as a main bracket;
the motor shell 32 is arranged at the end part of the screw rod 31, and the motor shell 32 is fixedly connected with the universal joint 4;
a micro speed reducing motor (not shown in the figure) arranged inside the motor shell 32, wherein a motor shaft of the micro speed reducing motor is fixedly connected with the end part of the screw rod 31; specifically, the output shaft of the miniature speed reducing motor is a polygonal wrench, and the end part of the screw rod 31 is provided with a polygonal slotted hole which is matched and connected with the polygonal wrench;
a small display screen 33;
the nut sleeve 34 is fixed with the small display screen 33 and sleeved on the rod body of the screw rod 31, the rod body of the screw rod 31 is provided with an external thread, an internal thread matched with the external thread is arranged in the nut sleeve 34, so that the nut sleeve 34 and the small display screen 33 are connected on the screw rod 31 in a sliding way, the nut sleeve 34 of one electric support rod 3 is hinged on the outer side of the motor shell 32 of the adjacent electric support rod 3, and the hinging is specifically a 360-degree plane rotary joint connection, as shown in fig. 3;
the six electric support rods 3 are connected end to form an electric six-connecting-rod structure telescopic support frame, the electric six-connecting-rod structure telescopic support frame is arranged outside the near-end ring 1 and the far-end ring 2, and the screw 31 of the electric six-connecting-rod structure telescopic support frame can extend out of the near-end ring 1 and the far-end ring 2, so that the length of the screw 31 is designed at will, the stroke of the nut sleeve 34 is further prolonged, and the whole movement range of the external bone fixator is greatly improved;
a displacement sensor (not shown in the figure) which is arranged inside the nut sleeve 34 and displays the current length of the electric supporting rod 3 through a small digital display screen outside the nut sleeve 34;
as shown in fig. 4 and fig. 5, the self-locking switch 35 is disposed outside the nut socket 34 and can be manually rotated, so that the self-locking switch 35 penetrates the nut socket 34 and abuts against the external thread of the screw 31, thereby positioning the nut socket 34;
the external fixator for the bones further comprises a motion controller (not shown in the figure) and a user terminal (not shown in the figure), wherein the user terminal is a touch display screen matched with the motion controller or a computer, a mobile phone and the like, the user terminal is connected with the motion controller, the motor shell 32 is provided with a motor driving socket 321, the motion controller is inserted into the motor driving socket 321 through a driving wire to be connected with a micro speed reducing motor of any one electric supporting rod 3 and used for receiving a feedback signal and driving the micro speed reducing motor, the user terminal is used for inputting an electronic prescription, and a user can control the micro speed reducing motor to realize digital adjustment of the external fixator for the bones by controlling the motion controller. Each electric support rod 3 has an independent number corresponding to the prescription software, and the power supply and the signal are provided by an external motion controller.
In an embodiment, the self-locking switch 35 is a block, a protruding rod 351 is disposed on an end surface of the self-locking switch 35, the protruding rod 351 has an external thread, an internal thread hole communicated with the screw rod 31 is formed on an outer side of the nut sleeve 34 for the protruding rod 351 to penetrate and fit, and a rubber pad is mounted at a tail end of the protruding rod 351 to increase friction force with the screw rod 31.
The using method of the invention comprises the following steps:
step 1: the doctor refers to the X-ray film of shooing the patient, and the length of each electronic bracing piece 3 of this external bone fixator carries out preliminary adjustment through manual earlier to with electronic six connecting rod formula external bone fixator cover on the patient, supplementary instruments such as rethread steel needle and steel needle fixing base are fixed near end ring 1, distal end ring 2 and patient's limbs.
Step 2: the self-locking switches 35 of all the electric support bars 3 are rotated to the relaxed position.
And step 3: referring to fig. 6, length information of the electric support rods 3 of each number is obtained through calculation of prescription software, a doctor inserts a drive line into a motor drive socket 321 of a corresponding electric support rod 3 according to prescription information, a user terminal inputs the prescription information and starts a program through a motion controller, after the program is started, a micro speed reduction motor is started to rotate to drive a screw 31 to rotate, a nut sleeve 34 on a rod body of the screw 31 moves along the screw 31, a displacement sensor inside the nut sleeve 34 can display the length information on a small screen outside the nut sleeve 34 in time, the length information refers to a length value of a universal joint 4 which is preset as a starting end and is from the universal joint 4 to the nut sleeve 34, and when the nut sleeve 34 moves to a length position required by an electronic prescription, the micro speed reduction motor stops rotating.
And 4, step 4: after adjusting one electric support rod 3, the motor drive wire is pulled out, and the motor drive socket 321 of the next electric support rod 3 is inserted until the six electric support rods 3 are adjusted.
And 5, screwing the self-locking switches 35 of all the electric support rods 3, and enabling the rubber pads at the tail ends of the convex rods 351 to abut against the external threads of the screw rods 31 so as to fix the nut sleeves 34 at the current length position, thereby finishing the fixation of the external bone fixator.
The control program can realize more operation methods by expanding functions.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the design of the present invention, and all equivalent changes made in the design key point of the present invention fall within the protection scope of the present invention.
Claims (5)
1. An electric six-connecting-rod type external bone fixator is characterized by comprising a near-end ring, a far-end ring, an electric supporting rod, universal joints and common clamping pieces, wherein three common clamping pieces are uniformly distributed and fixed on the near-end ring and the far-end ring respectively, the positions of the three common clamping pieces on the near-end ring are staggered with the positions of the three common clamping pieces on the far-end ring, the common clamping pieces are straight connecting pieces which are clamped and fixed, the outer end of each common clamping piece extends out of the near-end ring and the far-end ring, the outer end of each common clamping piece is connected with one universal joint, and each universal joint is connected with one electric supporting rod, so that the electric supporting rod is arranged outside the near-end ring and the far-end ring;
each electric support rod comprises
A screw;
the motor shell is arranged at the end part of the screw rod and is fixedly connected with the universal joint;
the miniature speed reducing motor is arranged in the motor shell, and a motor shaft of the miniature speed reducing motor is fixedly connected with the end part of the screw rod;
a small display screen;
the nut sleeve is fixed with the small display screen and sleeved on the rod body of the screw rod, the rod body of the screw rod is provided with an external thread, and an internal thread matched with the external thread is arranged in the nut sleeve, so that the nut sleeve and the small display screen are connected to the screw rod in a sliding manner, the nut sleeve of one electric support rod is hinged to the outer side of the motor shell of the adjacent electric support rod, and the six electric support rods are connected and closed end to form the electric six-connecting-rod structure telescopic support frame;
the displacement sensor is arranged in the nut sleeve and displays the current length of the electric support rod through a small digital display screen on the outer side of the nut sleeve;
the self-locking switch is arranged outside the nut sleeve in a penetrating mode and can be used for manual rotation, so that the self-locking switch penetrates through the nut sleeve and abuts against the external thread of the screw rod, and the nut sleeve is positioned;
the external bone fixator further comprises a motion controller and a user terminal, wherein the user terminal is connected with the motion controller, the motion controller is connected to the miniature speed reducing motor of any one electric supporting rod through a driving wire, and the user terminal is used for inputting an electronic prescription.
2. The electric six-link type external fixator of claim 1, wherein: one of the common clamping pieces on the near-end ring can be replaced by a Z-shaped clamping piece, the Z-shaped clamping piece is a connecting piece with a Z-shaped cross section and is clamped and fixed, and the Z-shaped clamping piece has a height difference relative to the common clamping pieces.
3. The electric six-link type external fixator of claim 1, wherein: the self-locking switch is a block body, a convex rod is arranged on the end face of the self-locking switch and provided with external threads, and an internal thread hole communicated with the screw rod is formed in the outer side of the nut sleeve and used for the convex rod to penetrate and be matched with the screw rod.
4. The electric six-link type external fixator of claim 3, wherein: the tail end of the convex rod is provided with a rubber pad.
5. The electric six-link type external fixator of claim 1, wherein: the motor shell is provided with a motor driving socket, and the driving wire is inserted in the motor driving socket to realize connection with the miniature speed reduction motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011524913.5A CN112603506B (en) | 2020-12-22 | 2020-12-22 | Electric six-connecting-rod type external fixator for bones |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011524913.5A CN112603506B (en) | 2020-12-22 | 2020-12-22 | Electric six-connecting-rod type external fixator for bones |
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| Publication Number | Publication Date |
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| CN112603506A true CN112603506A (en) | 2021-04-06 |
| CN112603506B CN112603506B (en) | 2021-09-24 |
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| CN202011524913.5A Expired - Fee Related CN112603506B (en) | 2020-12-22 | 2020-12-22 | Electric six-connecting-rod type external fixator for bones |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113440233A (en) * | 2021-08-05 | 2021-09-28 | 中北大学 | Method for restoring and correcting deformity of fracture by using external bone fixing frame |
| CN113925584A (en) * | 2021-10-22 | 2022-01-14 | 山西昱一文化发展有限公司 | Digital control system of electronic external bone fixator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1186421A (en) * | 1995-03-01 | 1998-07-01 | 史密夫和内修有限公司 | Spatial frame |
| WO2014159824A2 (en) * | 2013-03-13 | 2014-10-02 | DePuy Synthes Products, LLC | External bone fixation device |
| CN106361420A (en) * | 2016-09-12 | 2017-02-01 | 义乌敦仁智能科技有限公司 | External skeletal fixation orthopedic frame |
| CN108742804A (en) * | 2018-06-05 | 2018-11-06 | 天津大学 | A kind of method of the reduction of the fracture and the exterior fixing rack in parallel for the reduction of the fracture |
| CN111588453A (en) * | 2020-04-15 | 2020-08-28 | 山东中医药大学附属医院 | Leg orthopedics is fixed and is resumeed support |
-
2020
- 2020-12-22 CN CN202011524913.5A patent/CN112603506B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1186421A (en) * | 1995-03-01 | 1998-07-01 | 史密夫和内修有限公司 | Spatial frame |
| WO2014159824A2 (en) * | 2013-03-13 | 2014-10-02 | DePuy Synthes Products, LLC | External bone fixation device |
| CN106361420A (en) * | 2016-09-12 | 2017-02-01 | 义乌敦仁智能科技有限公司 | External skeletal fixation orthopedic frame |
| CN108742804A (en) * | 2018-06-05 | 2018-11-06 | 天津大学 | A kind of method of the reduction of the fracture and the exterior fixing rack in parallel for the reduction of the fracture |
| CN111588453A (en) * | 2020-04-15 | 2020-08-28 | 山东中医药大学附属医院 | Leg orthopedics is fixed and is resumeed support |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113440233A (en) * | 2021-08-05 | 2021-09-28 | 中北大学 | Method for restoring and correcting deformity of fracture by using external bone fixing frame |
| CN113925584A (en) * | 2021-10-22 | 2022-01-14 | 山西昱一文化发展有限公司 | Digital control system of electronic external bone fixator |
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| CN112603506B (en) | 2021-09-24 |
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