CN112370132B - Universal finger and palm bone annular external fixator - Google Patents
Universal finger and palm bone annular external fixator Download PDFInfo
- Publication number
- CN112370132B CN112370132B CN202011124208.6A CN202011124208A CN112370132B CN 112370132 B CN112370132 B CN 112370132B CN 202011124208 A CN202011124208 A CN 202011124208A CN 112370132 B CN112370132 B CN 112370132B
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- universal
- head
- hole
- rod
- hemispherical
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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
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/6441—Bilateral fixators, i.e. with both ends of pins or wires clamped
-
- 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
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/6466—Devices extending alongside the bones to be positioned with pin-clamps movable along a solid connecting rod
Abstract
The invention discloses a universal finger metacarpal annular external fixator which comprises two fixators and a rotating assembly, wherein each fixator comprises an arc body, two spicules and a universal head, the two spicules are respectively and movably connected to two ends of the arc body, the universal head is arranged in the middle of the arc body, the two fixators are respectively connected with two ends of the rotating assembly through the universal head, and the two fixators can relatively rotate. When the universal finger and palm bone annular external fixator is clinically installed, the universal head can be adjusted according to actual fracture conditions, so that the fixator can move in multiple degrees of freedom, different fracture conditions can be matched easily, and the requirement of clinical installation is met; when the recovered exercise of postoperative, can be according to the doctor's advice, through rotating assembly's regulation, can relative rotation between two fixers, make the phalanges of two different sections can be along with the rotatory bending of fixer, reach the purpose that the function was taken exercise in earlier stage of the postoperative, do benefit to the recovery of postoperative joint motion function.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a universal phalanx annular external fixator.
Background
Dislocation or fracture of the proximal interphalangeal joint due to trauma is a common type of fracture of the hand, and the mechanism of injury is usually a direct violence or the result of the combined action of hyperextension of the proximal interphalangeal joint and longitudinal load. The traditional treatment mode aiming at the fracture is to use external fixation such as a phalanx splint or a plaster support on the basis of manual reduction, but the method has the determination that the fracture part is not fixed exactly, the free fracture block is not effectively pressurized, the interphalangeal joints are easily influenced greatly after the fixing time is too long, and the like. Therefore, on the basis of the prior art, the operation technology is improved, the phalangeal external fixing support effectively fixes and pressurizes the adjacent bones of the interphalangeal joint, the stability of the interphalangeal joint in the fracture healing process is ensured, and the operation mode achieves good treatment effect at present. However, the surgical method still does not solve the problem that the joint movement is greatly influenced after the interphalangeal joint fixing time of the patient is too long, usually, the patient starts the functional exercise and rehabilitation at an early stage, but the method cannot guarantee the consistency of the functional exercise and rehabilitation effect of each patient, and still has great limitation.
Disclosure of Invention
The present invention is directed to a universal metacarpal ring external fixator, which solves one or more of the problems of the prior art and provides at least one of the advantages of the universal metacarpal ring external fixator.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a universal finger metacarpal bone annular external fixator, includes two fixers and rotating assembly, the fixer includes the circular arc body, two spicules and universal head, two spicules swing joint respectively is at the both ends of the circular arc body, universal head sets up the middle part at the circular arc body, two the fixer passes through universal head and is connected with rotating assembly's both ends respectively, can relative rotation between two fixers.
As a further improvement of the technical scheme, the arc body is provided with a plurality of through holes at uniform intervals, the universal head comprises a spherical head and a screw rod part connected with the spherical head, and the screw rod part penetrates through the through holes and is meshed with the nut.
As a further improvement of the above technical scheme, the rotating assembly includes a universal extension rod, a universal threaded rod, a movable seat and a fixed seat, the movable seat is rotatably arranged in the fixed seat, one end of the universal extension rod is movably connected with the movable seat, the other end of the universal extension rod is movably connected with one of the universal heads, one end of the universal threaded rod is connected with the fixed seat, and the other end of the universal threaded rod is movably connected with the other universal head.
As a further improvement of the technical scheme, the universal extension rod comprises a first hemispherical head and a long rod connected with the first hemispherical head, the first hemispherical head is provided with a first hemispherical cavity, the movable seat is provided with a through guide hole, one end of the long rod is slidably arranged in the guide hole, and the other end of the long rod is in press fit connection with one spherical head of the universal head through the first hemispherical head.
As a further improvement of the technical scheme, the universal threaded rod comprises a second hemispherical head and a threaded rod connected with the second hemispherical head, the second hemispherical head is provided with a second hemispherical concave cavity, one end of the threaded rod is connected with one end of the fixing seat, and the other end of the threaded rod is in press-fit connection with the spherical head of the universal head through the second hemispherical head.
As a further improvement of the above technical scheme, the rotating assembly further comprises a knob, the knob comprises a connecting rod and a rotary handle connected with the connecting rod, the middle of the fixing seat is provided with a slotted hole, one end of the bottom surface of the fixing seat is provided with a connecting block, the two ends of the connecting block are provided with first through holes, the middle of the connecting block is provided with a notch, the movable seat comprises a base and an embossment arranged on the base, the movable seat is provided with the bottom surface of the fixing seat, the embossment is arranged in the notch, the embossment is provided with second through holes corresponding to the first through holes, the connecting rod penetrates through the first through holes and the second through holes and is fixedly connected with the embossment, and the movable seat is in rotary motion relative to the fixing seat.
As a further improvement of the technical scheme, the connecting rod and the bulges are respectively provided with a pin hole, the connecting rod and the bulges are fixedly connected through pins, one end side face of the fixing seat is provided with a threaded hole, the rotating handle is provided with an arc-shaped hole, the arc-shaped hole is provided with a limit screw, and the limit screw penetrates through the arc-shaped hole and is meshed with the threaded hole to be connected.
As a further improvement of the above technical solution, the fixator further includes a bolt, a slot is provided between a bolt head of the bolt and the stud, the spicule is clamped in the slot, and the stud of the bolt penetrates through the through hole and is engaged with the nut.
Compared with the prior art, the invention has the following beneficial effects:
the universal finger metacarpal annular external fixator is provided with two fixators and a rotating assembly, each fixator comprises an arc body, two spicules and a universal head, the two spicules are respectively and movably connected to two ends of the arc body, the universal head is arranged in the middle of the arc body, the two fixators are respectively connected with two ends of the rotating assembly through the universal head, and the two fixators can relatively rotate, so that the fixators can move in multiple degrees of freedom according to actual fracture conditions during clinical installation by adjusting the universal head, the fixators can be more easily matched with different fracture conditions, and the requirements of clinical installation are met; when the recovered exercise of postoperative, can be according to the doctor's advice, through rotating assembly's regulation, can relative rotation between two fixers, make the phalanges of two different sections can be along with the rotatory bending of fixer, reach the purpose that the function was taken exercise in earlier stage of the postoperative, do benefit to union. The invention can realize effective fixation of the broken end of the fracture while quantitatively controlling the mobility of the fixed joint according to medical advice in the process of fixing the fracture of the patient, carry out early rehabilitation of the joint movement and avoid the limitation of the joint movement caused by the fixation of the interphalangeal joint.
Drawings
The invention is further described below with reference to the accompanying drawings and examples.
FIG. 1 is a first state diagram of the present invention;
FIG. 2 is a second state diagram of the present invention in use;
FIG. 3 is a schematic structural view of a universal head of the present invention;
FIG. 4 is a schematic view of the construction of the bolt of the present invention;
FIG. 5 is a schematic view of the construction of the universal threaded rod of the present invention;
FIG. 6 is a schematic view of the construction of the universal extension pole of the present invention;
FIG. 7 is a schematic structural diagram of the movable seat of the present invention;
FIG. 8 is a schematic structural view of the fixing base of the present invention;
FIG. 9 is a schematic view of the knob of the present invention;
FIG. 10 is a first usage effect diagram of the present invention;
fig. 11 is a second effect of the present invention.
In the figure, 100-fixer, 110-arc body, 111-through hole, 120-spicule, 130-universal head, 131-spherical head, 132-screw rod part, 140-bolt, 141-clamping groove, 200-rotating component, 210-universal extension rod, 211-first hemispherical head, 212-long rod, 220-universal screw rod, 221-second hemispherical head, 222-screw rod, 230-movable seat, 231-guide hole, 232-base, 233-bulge, 234-second through hole, 240-fixed seat, 241-slotted hole, 242-connecting block, 243-first through hole, 244-notch, 245-threaded hole, 250-knob, 251-connecting rod, 252-rotary handle, 253-arc hole, 300-pin hole, 400-limit screw.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if words such as "a plurality" are described, the meaning is one or more, the meaning of a plurality is two or more, more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 11, in an embodiment of the present invention, the universal metacarpal annular external fixator includes two fixators 100 and a rotating assembly 200, where the fixator 100 includes an arc body 110, two spicules 120 and a universal head 130, the arc body 110 is uniformly provided with a plurality of through holes 111 at intervals, the two spicules 120 are respectively movably connected to two ends of the arc body 110, a distance between the two spicules 120 can be adjusted according to a width of a phalanx, the universal head 130 includes a spherical head 131 and a screw portion 132 connected to the spherical head 131, the screw portion 132 penetrates through the through holes 111 and is engaged with a nut, the universal head 130 is disposed in a middle of the arc body 110, and can also be disposed at different positions of the arc body 110 through different through holes 111. The two fixators 100 are respectively connected with two ends of the rotating assembly 200 through universal heads 130, the rotating assembly 200 comprises a universal extension rod 210, a universal threaded rod 220, a movable seat 230 and a fixed seat 240, the movable seat 230 is rotatably arranged in the fixed seat 240, one end of the universal extension rod 210 is movably connected with the movable seat 230, the other end of the universal extension rod 210 is movably connected with one universal head 130, one end of the universal threaded rod 220 is connected with the fixed seat 240, the other end of the universal threaded rod 220 is movably connected with the other universal head 130, the two fixators 100 respectively fix phalanges of different sections through bone needles 120, the two fixators 100 can relatively rotate through the rotating assembly 200, and therefore, when postoperative rehabilitation exercises are performed, the phalanges of two different sections can rotate and bend along with the fixators 100 through adjustment of the rotating assembly 200 according to medical orders, and the purpose of postoperative early-stage function exercises can be achieved, is beneficial to fracture healing.
In some embodiments, the universal extension rod 210 includes a first hemispherical head 211 and an elongated rod 212 connected to the first hemispherical head 211, the first hemispherical head 211 has a first hemispherical cavity, the movable seat 230 has a guide hole 231 therethrough, one end of the elongated rod 212 is slidably disposed in the guide hole 231, and the other end of the elongated rod 212 is press-fitted to the spherical head 131 of one of the universal heads 130 through the first hemispherical head 211. When the two fixing devices 100 do not rotate relatively, the long rod 212 penetrates through the guide hole 231 of the movable seat 230 and extends to the outside, when the two fixing devices 100 rotate relatively, the long rod 212 rotates along with the rotation of the movable seat 230, and meanwhile, the long rod 212 can slide in the guide hole 231, so that the distance between the fixing device 100 and the rotating component 200 is increased, thereby solving the problem that the distance between fingers is increased when the fingers are changed from a horizontal state to a bending state, the universal extension rod 210 is in press-fit connection with the spherical head 131 of the universal head 130 through the first hemispherical head 211, so that the universal extension rod 210 and the fixing device 100 can rotate at multiple angles, different fracture conditions can be more easily matched, and the clinical installation requirements can be met, as shown in detail in fig. 1, fig. 2, fig. 10 and fig. 11.
In some embodiments, the universal threaded rod 220 includes a second hemispherical head 221 and a threaded rod 222 connected to the second hemispherical head 221, the second hemispherical head 221 is provided with a second hemispherical cavity, one end of the threaded rod 222 is connected to one end of the fixing seat 240, and the other end of the threaded rod 222 is press-fit connected to the spherical head 131 of the other universal head 130 through the second hemispherical head 221. Universal threaded rod 220 is connected through the spherical head 131 press-fit of second hemisphere head 221 with universal head 130 for can rotate the activity with the multi-angle between universal threaded rod and the fixer 100, match different fracture condition more easily, realize the satisfaction to clinical installation demand.
In some embodiments, the rotating assembly 200 further includes a knob 250, the knob 250 includes a connecting rod 251 and a rotating handle 252 connected to the connecting rod 251, a slotted hole 241 is formed in the middle of the fixed base 240, a connecting block 242 is formed at one end of the bottom surface of the fixed base 240, first through holes 243 are formed at two ends of the connecting block 242, a notch 244 is formed in the middle of the connecting block 242, the movable base 230 includes a base 232 and a protrusion 233 arranged on the base 232, the movable base 230 is arranged on the bottom surface of the fixed base 240, the protrusion 233 is arranged in the notch 244, the protrusion 233 is provided with a second through hole 234 corresponding to the first through hole 243, the connecting rod 251 penetrates through the first through hole 243 and the second through hole 234 and is fixedly connected to the protrusion 233, and the movable base 230 performs a rotating motion relative to the fixed base 240. The connecting rod 251 rotates by rotating the handle 252 to drive the protrusion 233 to rotate the movable base 230, and the slot 241 provides a rotating space for the movable base 230 to ensure the movable base 230 to rotate.
In some embodiments, the connecting rod 251 and the protrusion 233 are respectively provided with a pin hole 300, the connecting rod 251 and the protrusion 233 are fixedly connected by a pin, one end side of the fixing base 240 is provided with a threaded hole 245, the rotating handle 252 is provided with an arc-shaped hole 253, the arc-shaped hole 253 is provided with a limit screw 400, and the limit screw 400 penetrates through the arc-shaped hole 253 and is engaged with the threaded hole 245. The connecting rod 251 and the protrusion 233 are connected together by the cooperation of the pin hole 300 and the pin, thereby facilitating the installation and the disassembly.
In some embodiments, the fixture 100 further includes a bolt 140, a slot 141 is disposed between a head of the bolt 140 and the stud of the bolt 140, the spicule 120 is clamped in the slot 141, and the stud of the bolt 140 passes through the through hole 111 and is engaged with the nut. The bolt 140, the clamping groove 141 and the nut are arranged to be matched with each other to fix the spicule 120 on the arc body 110, so that the disassembly and the assembly are convenient.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.
Claims (5)
1. The universal finger and palm bone annular external fixator is characterized by comprising two fixators and a rotating assembly, wherein each fixator comprises an arc body, two spicules and a universal head, the two spicules are respectively and movably connected to two ends of the arc body, the universal head is arranged in the middle of the arc body, the two fixators are respectively connected with two ends of the rotating assembly through the universal head, and the two fixators can relatively rotate;
the rotating assembly comprises a universal extension rod, a universal threaded rod, a movable seat and a fixed seat, the movable seat is rotatably arranged in the fixed seat, one end of the universal extension rod is movably connected with the movable seat, the other end of the universal extension rod is movably connected with one universal head, one end of the universal threaded rod is connected with the fixed seat, and the other end of the universal threaded rod is movably connected with the other universal head;
the movable seat is provided with a through guide hole, and one end of the universal extension rod is slidably arranged in the guide hole;
the rotary component also comprises a knob, the knob comprises a connecting rod and a rotary handle connected with the connecting rod, a slotted hole is formed in the middle of the fixed seat, a connecting block is arranged at one end of the bottom surface of the fixed seat, first through holes are formed in two ends of the connecting block, a notch is formed in the middle of the connecting block, the movable seat comprises a base and a protrusion arranged on the base, the movable seat is arranged on the bottom surface of the fixed seat, the protrusion is arranged in the notch, a second through hole corresponding to the first through hole is formed in the protrusion, the connecting rod penetrates through the first through hole and the second through hole and is fixedly connected with the protrusion, and the movable seat rotates relative to the fixed seat;
the connecting rod with the arch is equipped with the cotter hole respectively, and connecting rod and arch are through pin fixed connection, the one end side of fixing base is equipped with the screw hole, the swing handle is equipped with the arc hole, the arc hole is equipped with stop screw, stop screw runs through the arc hole to be connected with the screw hole meshing.
2. The universal metacarpal annular external fixator of claim 1, wherein the circular arc body is provided with a plurality of through holes at regular intervals, the universal head comprises a spherical head and a screw part connected with the spherical head, and the screw part penetrates through the through holes and is connected with a nut in a meshing manner.
3. The universal metacarpal annular external fixator of claim 2, wherein the universal extension rod comprises a first hemispherical head provided with a first hemispherical concave cavity and an elongate rod connected with the first hemispherical head, and the first hemispherical head is press-fitted with the spherical head of one of the universal heads.
4. The universal metacarpal annular external fixator as claimed in claim 2, wherein the universal threaded rod comprises a second hemispherical head and a threaded rod connected with the second hemispherical head, the second hemispherical head is provided with a second hemispherical cavity, one end of the threaded rod is connected with one end of the fixed seat, and the other end of the threaded rod is press-fitted with the spherical head of the other universal head through the second hemispherical head.
5. The universal metacarpal annular external fixator according to claim 1, wherein the fixator further comprises a bolt, a clamping groove is arranged between a bolt head and a stud of the bolt, the spicule is clamped in the clamping groove, and the stud of the bolt penetrates through the through hole and is meshed with the nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011124208.6A CN112370132B (en) | 2020-10-20 | 2020-10-20 | Universal finger and palm bone annular external fixator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011124208.6A CN112370132B (en) | 2020-10-20 | 2020-10-20 | Universal finger and palm bone annular external fixator |
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| Publication Number | Publication Date |
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| CN112370132A CN112370132A (en) | 2021-02-19 |
| CN112370132B true CN112370132B (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011124208.6A Active CN112370132B (en) | 2020-10-20 | 2020-10-20 | Universal finger and palm bone annular external fixator |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113974805A (en) * | 2021-12-09 | 2022-01-28 | 河北医科大学第三医院 | External fixator for tibiofibula |
| CN116115319B (en) * | 2023-01-05 | 2023-09-12 | 无锡市第九人民医院 | Tibia platform fracture positioning and guiding equipment under arthroscope |
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| CN202151375U (en) * | 2011-04-26 | 2012-02-29 | 杭州马斯汀医疗器材有限公司 | External fixation support for pelvis fracture |
| CN202207195U (en) * | 2011-05-26 | 2012-05-02 | 杭州马斯汀医疗器材有限公司 | Outer fixed support for elbow joint facture |
| CN207429146U (en) * | 2017-03-30 | 2018-06-01 | 苏州宇翔医疗器械有限公司 | A kind of orthopedic fingers and palms bone stent of correction |
| CN208002876U (en) * | 2017-08-24 | 2018-10-26 | 河北博川医疗器械有限公司 | Sliding chain elbow joint stent |
| CN109925036A (en) * | 2019-04-01 | 2019-06-25 | 黄启顺 | A kind of Combined elastic exterior fixing rack for limbs fracture |
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| CN201108488Y (en) * | 2007-12-20 | 2008-09-03 | 周建明 | Articulatio carpi exterior fixing rack |
| CN202128532U (en) * | 2011-05-27 | 2012-02-01 | 浙江神腾康慈生物医药科技有限公司 | Wrist joint external fixator |
| US10682160B2 (en) * | 2015-12-03 | 2020-06-16 | Globus Medical, Inc. | External fixator assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202151375U (en) * | 2011-04-26 | 2012-02-29 | 杭州马斯汀医疗器材有限公司 | External fixation support for pelvis fracture |
| CN202207195U (en) * | 2011-05-26 | 2012-05-02 | 杭州马斯汀医疗器材有限公司 | Outer fixed support for elbow joint facture |
| CN207429146U (en) * | 2017-03-30 | 2018-06-01 | 苏州宇翔医疗器械有限公司 | A kind of orthopedic fingers and palms bone stent of correction |
| CN208002876U (en) * | 2017-08-24 | 2018-10-26 | 河北博川医疗器械有限公司 | Sliding chain elbow joint stent |
| CN109925036A (en) * | 2019-04-01 | 2019-06-25 | 黄启顺 | A kind of Combined elastic exterior fixing rack for limbs fracture |
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| CN112370132A (en) | 2021-02-19 |
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