CN106901817A - Ankle-joint in-seam comminuted fracture fixator - Google Patents
Ankle-joint in-seam comminuted fracture fixator Download PDFInfo
- Publication number
- CN106901817A CN106901817A CN201710265258.8A CN201710265258A CN106901817A CN 106901817 A CN106901817 A CN 106901817A CN 201710265258 A CN201710265258 A CN 201710265258A CN 106901817 A CN106901817 A CN 106901817A
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- Prior art keywords
- bone fragment
- inner bone
- claws
- central boss
- claw
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- Pending
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- 208000024779 Comminuted Fractures Diseases 0.000 title claims abstract description 21
- 210000000544 articulatio talocruralis Anatomy 0.000 title claims abstract description 21
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 124
- 241000237983 Trochidae Species 0.000 claims abstract description 19
- 239000012634 fragment Substances 0.000 claims description 108
- 210000000078 claw Anatomy 0.000 claims description 54
- 210000003423 ankle Anatomy 0.000 claims description 8
- 239000000758 substrate Substances 0.000 abstract description 5
- 201000000585 muscular atrophy Diseases 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000004064 dysfunction Effects 0.000 abstract 1
- 210000003414 extremity Anatomy 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 208000010392 Bone Fractures Diseases 0.000 description 13
- 206010017076 Fracture Diseases 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000000399 orthopedic effect Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 210000002683 foot Anatomy 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 210000004233 talus Anatomy 0.000 description 2
- 210000001137 tarsal bone Anatomy 0.000 description 2
- 206010063659 Aversion Diseases 0.000 description 1
- 206010028289 Muscle atrophy Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000035475 disorder Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000020763 muscle atrophy Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The present invention relates to a kind of ankle-joint in-seam comminuted fracture fixator, it includes top shell, folding and unfolding swing arm and some interior bone chip pawls；Top shell be one it is overall be in polygonal pyramid bench-type hard profile material, it includes grand rib, bottom surface substrates and central boss, and central boss top is provided with through hole, it is internal with grand prismatic into groove be connected；Folding and unfolding swing arm bottom is fixed with a connecting plate；Interior bone chip pawl middle part is hinged in the groove of the grand rib of top shell by jointed shaft, and interior bone chip pawl medial extremity is ridden upon on the connecting plate of folding and unfolding swing arm bottom.The present invention can realize the quick overall folding and unfolding of interior bone chip pawl and independent fine adjustment, it is good with bone chip reset rear stability, receive functional rehabilitation exercise advantage ahead of time, avoid because joint is stiff for a long time, cause muscular atrophy and dysfunction, bone chip pin is additionally arranged on part design, bone chip folded block angled forward in ankle-joint, displacement can be effectively prevented, the scope of application in joint comminuted fracture field is wider.
Description
Technical Field
The invention relates to an orthopedic medical instrument, in particular to an ankle joint inner bone comminuted fracture fixator.
Background
Comminuted fracture is a common trauma type in orthopedic patients, and is mainly comminuted fracture of bones in joint parts, but the ankle parts of feet are used as pivots for connecting shanks and instep in daily activities, and frequent pulling of shank muscles and foot muscles causes extremely unsatisfactory resetting and fixing effects of bone fragments in ankle joints. Chinese patent (CN20101228) discloses an internal bone fracture fixator, which comprises a plurality of opposite bone fragment hooks, wherein the rear ends of the bone fragment hooks are hinged to a support rod, the support rod penetrates through a furling cover, then is connected with a nut, and is used for increasing and reducing pressure through the nut, adjusting the extension of the support rod, and tightening the bone fragment hooks by using the furling cover. The invention aims to improve the inner fixing scheme of steel needle penetration and steel plate suspension wire in the traditional orthopedic operation by using a bone fragment hook fastening mode. However, the invention assumes that the fracture fragments of the internal bones of the ankle bones are uniform in size and distribution, and in real cases, the fracture fragments of the internal bones of the ankle bones are very few in size and distribution position, so that the fracture fragments are uniform and regular, and the bone fragment hooks cannot be used for exactly matching each bone fragment at the same time. For example, in the case of irregular distribution of the inner bone fragments, several bone fragment hooks are often hooked into the bone fragments, while other bone fragment hooks do not completely contact the bone fragments, and in the case of furling, the respective fragments are unevenly stressed, which may eventually lead to the failed fixation of the fragments, such as loose fixation of the fragments, dislocation of the fragments after operation, and the like. And the balance of the fixing force of one plane is solved when the two sides are grabbed to the middle. The key to achieving effective fixation depends on whether multi-vector balancing can be achieved in stereo. Clinical performance ankle joint endosteum is reset and is fixed often to use shank, ankle joint as the fulcrum during function exercise, and ankle joint piece bone piece dislocation forward under the effect of resultant force, and comminuted fracture then the piece is changeed and takes place the separation aversion. Therefore, the technical scheme is more suitable for the split joint of the long bone fracture and is difficult to show the structural superiority in treating the comminuted fracture of the joint inner bone. Most of the existing ankle joint inner bone comminuted fracture fixators in other fields are invented and created, for example, instruments in the fields of Chinese patent CN204600815) an ankle fixator, Chinese patent CN204274609 an orthopedic ankle joint complex fracture treatment fixator and the like are all improved products taking a hard ankle guard type protective device as a prototype, and the fixation effects are all enhanced by matching plaster closure after surgical reduction.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an ankle joint inner bone comminuted fracture fixator.
In order to solve the technical problem, the ankle joint inner bone comminuted fracture fixator comprises a top shell, a retractable rotary rod and a plurality of inner bone fragment claws; wherein,
the top shell is a hard plate section which is integrally in a multi-pyramid frustum shape and comprises ridges, a bottom surface base plate and a central boss, wherein the ridges are used for covering the inner bone fragment claws, the number and the positions of the ridges are matched with those of the inner bone fragment claws, the top end of the central boss is provided with a through hole for the retraction rotary rod to pass through, and the inside of the central boss is communicated with a groove formed by the ridges;
the retractable rotary rod is provided with a double-lug nut, and a connecting plate is fixed at the bottom end of the retractable rotary rod;
the middle part of the inner bone fragment claw is hinged in the groove of the top shell bulge edge through a hinge shaft, and the inner side end of the inner bone fragment claw is erected on a connecting plate at the bottom end of the retraction rotating rod;
the retraction rotary rod is positioned in a through hole on the central boss, the connecting plate is positioned in the central boss, the inner bone fragment claw is positioned in a groove formed by the ridge, and the inner side end of the inner bone fragment claw extends to the central boss area;
each ridge is provided with a screw hole, and a fine-tuning rotary column used for carrying out micro fine adjustment on the retraction and release of the single inner bone fragment claw is screwed into the screw hole.
When the ankle joint ankle bone fragment fixing device is used, the retracting rotary rod is firstly utilized to operate the inner bone fragment claws to move together to fix the inner bone fragments of the ankle joint, and when the inner bone fragments are unevenly stressed and even the inner bone fragments in a certain piece are not stressed, the fine adjustment rotary column is independently adjusted to balance the stress of the inner bone fragments; the grooves below the ridges can limit the inner bone fragment claws, so that when the device is used, the inner bone fragment claws swing, the torsion return springs automatically open the inner bone fragment claws, the top shell is integrally formed by stamping, casting or drilling and milling on a lathe, and the inner structure is kept simple and smooth.
As optimization, a groove is formed in the bottom substrate of the top shell, and a plurality of height-adjustable bone fragment pins are slidably matched in the groove; the bottom surface base plate is provided with two slope grooves, a sleeve is arranged in each slope groove, one end of the sleeve is provided with a flanging, the other end of the sleeve is provided with a plurality of longitudinal grooves, an external thread is arranged in the middle of the sleeve and is provided with a tightening nut, and the bone fragment pin is tightened through the external thread and the tightening nut and is fixed in the slope groove. So design adds bone fragment pin for the broken bone of fixed flower joint central point position, to the broken bone of other positions, can do certain bending with broken bone staple and fix.
Preferably, the number of the inner bone fragment claws is four, the claw tips at the outer ends of the inner bone fragment claws point to the axial line of the through hole of the central boss, the inner ends of the inner bone fragment claws are uniformly distributed around the connecting plate in a radial shape, each inner bone fragment claw is provided with a torsion reset spring, and the torsion reset spring is arranged on a hinged shaft of the inner bone fragment claw and the keel; the bone fragment pins are two in number, and the tips of the bone fragment pins point to be vertical to the bottom surface of the top shell and downwards. By the design, the tips of the claws of the inner bone fragments are centripetal, and the crushed bones can be gathered when the bone-gathering forceps are used; the pointed end of the bone fragment pin points downwards, can carry out angle modulation through slope groove and sleeve pipe, fixes the bone fragment of different angle faces, and the bone fragment pin can be fixed and slide on the different positions in slope groove and fixed, and every slope inslot is equipped with a bone fragment pin and has both satisfied the demand.
The ankle joint inner bone comminuted fracture fixator is simple in structure and convenient to use, can achieve rapid overall retraction and independent fine adjustment of inner bone fragment claws, has the advantages of good stability after bone fragment restoration and early accepting functional recovery exercise, avoids muscle atrophy and functional disorder caused by long-term immobility of joints, is additionally provided with bone fragment pins in part design, can effectively prevent bone fragment broken blocks in ankle joints from angulating forwards and shifting, and is wider in application range in the field of comminuted fracture of joints.
Drawings
The invention is further described by the following figures in combination with the ankle comminuted fracture fixator:
FIG. 1 is a perspective view of the present ankle comminuted fracture fixator for an internal bone;
FIG. 2 is a partially sectional structure view of the present ankle comminuted fracture fixator for fracture of inner bone;
fig. 3 is a schematic structural view of a bone fragment pin kit;
fig. 4 is a schematic view of the construction of a bone fragment pin fixture.
In the figure: 1-top shell, 101-ridge, 102-bottom base plate, 103-central boss, 104-through hole, 105-groove, 106-slope groove, 2-retraction rotary rod, 3-inner bone fragment claw, 301-articulated shaft, 302-fine adjustment rotary column, 303-torsion reset spring, 4-connecting plate, 5-bone fragment pin, 6-sleeve, 601-flanging, 602-longitudinal groove, 603-external thread and 7-lock nut.
Detailed Description
As shown in fig. 1 to 4, the ankle joint comminuted fracture fixator for the inner bone comprises a top shell 1, a retracting and releasing rotating rod 2 and a plurality of inner bone fragment claws 3; the top shell 1 is an integral polygonal frustum pyramid type hard plate profile and comprises ridges 101, a bottom surface substrate 102 and a central boss 103, wherein the ridges 101 are used for covering the inner bone fragment claws 3 and are matched with the inner bone fragment claws 3 in number and position, the top end of the central boss 103 is provided with a through hole 104 for the retraction rotary rod 2 to pass through, and the inside of the central boss 103 is communicated with a groove 105 formed by the ridges 101; the retractable rotary rod 2 is provided with a double-lug nut 201, and a connecting plate 4 is fixed at the bottom end of the retractable rotary rod 2; the middle part of the inner bone fragment claw 3 is hinged in the groove 105 of the ridge 101 of the top shell 1 through a hinge shaft 301, and the inner side end of the inner bone fragment claw 3 is lapped on the connecting plate 4 at the bottom end of the retraction swing rod 2; the retraction rotary rod 2 is positioned in a through hole 104 on a central boss 103, the connecting plate 4 is positioned in the central boss 103, the inner bone fragment claw 3 is positioned in a groove 105 formed by a ridge 101, and the inner side end of the inner bone fragment claw 3 extends to the area of the central boss 103; each ridge 101 is provided with a screw hole, and a fine-tuning rotary column 302 for carrying out micro fine adjustment on the retraction and release of the single inner bone fragment claw 3 is screwed into the screw hole. When the ankle joint ankle bone fragment fixing device is used, the retracting rotary rod is firstly utilized to control the plurality of inner bone fragment claws to act together to fix the inner bone fragments of the ankle joint, and when the inner bone fragments are unevenly stressed and even the inner bone fragments in a certain piece are not stressed, the fine adjustment rotary column is independently adjusted to balance the stress of the inner bone fragments; the grooves below the ridges can limit the inner bone fragment claws, so that when the device is used, the inner bone fragment claws swing, the torsion return springs automatically open the inner bone fragment claws, the top shell is integrally formed by stamping, casting or drilling and milling on a lathe, and the inner structure is kept simple and smooth.
A groove is formed in the bottom substrate 102 of the top shell 1, and a plurality of height-adjustable bone fragment pins 5 are slidably matched in the groove; the bottom substrate 102 is provided with two slope grooves 106, each slope groove 106 is provided with a sleeve 6, one end of each sleeve 6 is provided with a flange 601, the other end of each sleeve is provided with a plurality of longitudinal grooves 602, the middle of each sleeve is provided with an external thread 603, each sleeve is provided with a tightening nut 7, and the bone fragment pins 5 are tightened through the external threads 603 and the tightening nuts 7 and fixed in the slope grooves 106. Add bone fragment pin for the broken bone of fixed flower joint central point position, to the broken bone of other positions, can make certain bending with broken bone staple and fix.
The number of the inner bone fragment claws 3 is four, the claw tips at the outer ends of the inner bone fragment claws point to the axial line of the through hole 104 of the central boss 103, the inner ends of the inner bone fragment claws are uniformly distributed around the connecting plate 4 in a radial shape, each inner bone fragment claw 3 is provided with a torsion reset spring 303, and the torsion reset spring 303 is arranged on a hinge shaft 301 of the inner bone fragment claw 3 and the keel 101; the bone fragment pins 5 are two in total, and the tips thereof are directed downward perpendicular to the bottom base plate 102 of the top case 1 therebetween. The tips of the claws of the inner bone fragments are centripetal, so that the crushed bones can be gathered when the bone-cutting forceps are used; the pointed end of the bone fragment pin points downwards, can carry out angle modulation through slope groove and sleeve pipe, fixes the bone fragment of different angle faces, and the bone fragment pin can be fixed and slide on the different positions in slope groove and fixed, and every slope inslot is equipped with a bone fragment pin and has both satisfied the demand.
The foregoing embodiments are intended to illustrate that the invention may be implemented or used by those skilled in the art, and modifications to the above embodiments will be apparent to those skilled in the art, and therefore the invention includes, but is not limited to, the above embodiments, any methods, processes, products, etc., consistent with the principles and novel and inventive features disclosed herein, and fall within the scope of the invention.
Claims (3)
1. The utility model provides an ankle joint inner bone comminuted fracture fixer which characterized by: the fixator comprises a top shell (1), a retractable rotating rod (2) and a plurality of inner bone fragment claws (3); wherein,
the top shell (1) is an integral polygonal frustum pyramid type hard plate profile and comprises ridges (101), a bottom surface base plate (102) and a central boss (103), wherein the ridges (101) are used for covering the inner bone fragment claws (3) and are matched with the inner bone fragment claws (3) in number and position, the top end of the central boss (103) is provided with through holes (104) for the retraction rotating rod (2) to pass through, and the inside of the central boss (103) is communicated with grooves (105) formed by the ridges (101);
the retractable rotary rod (2) is provided with a double-lug nut (201), and a connecting plate (4) is fixed at the bottom end of the retractable rotary rod (2);
the middle part of the inner bone fragment claw (3) is hinged in a groove (105) of the ridge (101) of the top shell (1) through a hinge shaft (301), and the inner side end of the inner bone fragment claw (3) is lapped on a connecting plate (4) at the bottom end of the retraction swing rod (2);
the retractable rotating rod (2) is positioned in a through hole (104) on the central boss (103), the connecting plate (4) is positioned in the central boss (103), the inner bone fragment claw (3) is positioned in a groove (105) formed by the ridge (101), and the inner side end of the inner bone fragment claw (3) extends to the area of the central boss (103);
each keel (101) is provided with a screw hole, and a fine-adjustment rotary column (302) used for carrying out micro-fine adjustment on the retraction and the release of a single inner bone fragment claw (3) is screwed into the screw hole.
2. The ankle comminuted fracture fixator of an endosseous bone in the joint according to claim 1, wherein: a groove is formed in the bottom surface base plate (102) of the top shell (1), and a plurality of height-adjustable bone fragment pins (5) are slidably matched in the groove; be equipped with two slope grooves (106) on bottom surface base plate (102) to be furnished with a sleeve pipe (6) in every slope groove (106), this sleeve pipe (6) one end is equipped with turn-ups (601), and the other end is opened has a plurality of vertical grooves (602), and the centre is equipped with external screw thread (603), and is furnished with lock ring nut (7), cramp bone fragment pin (5) through external screw thread (603) and lock ring nut (7), and fix it in slope groove (106).
3. The ankle comminuted fracture fixator of an endosseous bone in the joint according to claim 2, wherein: the number of the inner bone fragment claws (3) is four, the claw tips at the outer ends of the inner bone fragment claws point to the axial line of the through hole (104) of the central boss (103), the inner ends of the inner bone fragment claws are uniformly distributed around the connecting plate (4) in a radial shape, each inner bone fragment claw (3) is provided with a torsion reset spring (303), and the torsion reset springs (303) are arranged on the hinged shafts (301) of the inner bone fragment claws (3) and the keel (101); the two bone fragment pins (5) are arranged, and the tips of the two bone fragment pins are directed downwards to be vertical to the bottom base plate (102) of the top shell (1) between the two bone fragment pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710265258.8A CN106901817A (en) | 2017-04-21 | 2017-04-21 | Ankle-joint in-seam comminuted fracture fixator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710265258.8A CN106901817A (en) | 2017-04-21 | 2017-04-21 | Ankle-joint in-seam comminuted fracture fixator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106901817A true CN106901817A (en) | 2017-06-30 |
Family
ID=59209457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710265258.8A Pending CN106901817A (en) | 2017-04-21 | 2017-04-21 | Ankle-joint in-seam comminuted fracture fixator |
Country Status (1)
| Country | Link |
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| CN (1) | CN106901817A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110464439A (en) * | 2019-08-23 | 2019-11-19 | 迪恩医疗科技有限公司 | Limbs fracture inner fixing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2075070U (en) * | 1990-10-19 | 1991-04-17 | 黄克勤 | External staple for irregular fracture |
| CN2493170Y (en) * | 2001-08-29 | 2002-05-29 | 韩庆海 | Paw shape external fixator for ulnar fracture and olecranal fracture |
| US20050059968A1 (en) * | 2003-09-16 | 2005-03-17 | Grant William Peter | Combination bone fixation/immobilization apparatus |
| CN101380246A (en) * | 2007-09-07 | 2009-03-11 | 唐上德 | Patella fixing device |
| US20130116692A1 (en) * | 2007-03-07 | 2013-05-09 | Wright Medical Technology, Inc. | External fixation |
-
2017
- 2017-04-21 CN CN201710265258.8A patent/CN106901817A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2075070U (en) * | 1990-10-19 | 1991-04-17 | 黄克勤 | External staple for irregular fracture |
| CN2493170Y (en) * | 2001-08-29 | 2002-05-29 | 韩庆海 | Paw shape external fixator for ulnar fracture and olecranal fracture |
| US20050059968A1 (en) * | 2003-09-16 | 2005-03-17 | Grant William Peter | Combination bone fixation/immobilization apparatus |
| US20130116692A1 (en) * | 2007-03-07 | 2013-05-09 | Wright Medical Technology, Inc. | External fixation |
| CN101380246A (en) * | 2007-09-07 | 2009-03-11 | 唐上德 | Patella fixing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110464439A (en) * | 2019-08-23 | 2019-11-19 | 迪恩医疗科技有限公司 | Limbs fracture inner fixing device |
| CN110464439B (en) * | 2019-08-23 | 2023-12-22 | 迪恩医疗科技有限公司 | Internal fixing device for limb fracture |
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Application publication date: 20170630 |