CN111297461B - Acetabulum anterior column quadrangular fracture dissection steel plate system - Google Patents
Acetabulum anterior column quadrangular fracture dissection steel plate system Download PDFInfo
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- CN111297461B CN111297461B CN202010121252.5A CN202010121252A CN111297461B CN 111297461 B CN111297461 B CN 111297461B CN 202010121252 A CN202010121252 A CN 202010121252A CN 111297461 B CN111297461 B CN 111297461B
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- Prior art keywords
- steel plate
- lead screw
- support arm
- screw nut
- quadrangular
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 90
- 239000010959 steel Substances 0.000 title claims abstract description 90
- 210000000588 acetabulum Anatomy 0.000 title claims abstract description 7
- 238000002224 dissection Methods 0.000 title description 2
- 210000000078 claw Anatomy 0.000 claims abstract description 20
- 238000007493 shaping process Methods 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 5
- 208000010392 Bone Fractures Diseases 0.000 claims 7
- 206010017076 Fracture Diseases 0.000 abstract description 14
- 210000000988 bone and bone Anatomy 0.000 abstract description 6
- 206010000397 Acetabulum fracture Diseases 0.000 abstract description 2
- 230000000399 orthopedic effect Effects 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 3
- 210000001931 lesser pelvis Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000004197 pelvis Anatomy 0.000 description 1
Images
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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
- A61B17/8066—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones for pelvic reconstruction
-
- 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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Medical Informatics (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Neurology (AREA)
- Prostheses (AREA)
Abstract
The invention provides an anatomic steel plate system for acetabulum anterior column quadrangular fracture, and relates to the technical field of orthopedic surgical instruments. The steel sheet is including being the steel sheet body of fan ring type and distributing in a plurality of fixed orificess on the steel sheet body, and the middle part outside of steel sheet body is provided with wide-width portion, and wide-width portion is last to distribute and has the fixed orifices. The shaper comprises a lead screw and a lead screw nut matched with the lead screw, two support arms are symmetrically arranged on two sides of the lead screw nut, the middle part of each support arm is hinged on the lead screw nut, the bottom end of each support arm is pivotally connected with a claw buckle, the top end of each support arm is connected in the measuring scale frame in a sliding manner, and a limiting spring is connected between each support arm and the lead screw nut; the top of lead screw is connected on the motor, and the motor is fixed in handheld frame. Solves the problem that the acetabulum fracture anatomical plate in the prior art can not be well attached to the bone surface according to the individual difference of the wounded.
Description
Technical Field
The invention relates to the technical field of orthopedic surgical instruments, in particular to an anatomical steel plate system for acetabular anterior column quadrangular body fracture.
Background
The acetabulum fracture involves the quadrilateral body, the quadrilateral body fracture is usually along with the fracture of the proximal part of the anterior column to move in the same direction of the pelvic cavity, the fracture forms are changeable, and the classification is complex. The front column fracture often merges the front wall and the quadrilateral body, the quadrilateral bone surface is a bone plane forming the outer side edge of the true pelvis, is thin and is close to the femoral head, the form difference of the acetabulum between different wounded persons is large, the existing anatomical steel plate can not be well attached to the bone surface, and complications such as poor internal fixation, nail placement error or failure are easily caused.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an acetabular anterior column quadrangular fracture anatomic steel plate system, which solves the problem that the acetabular fracture anatomic steel plate in the prior art cannot be well attached to the bone surface according to individual difference of a wounded person.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
provides an anatomic steel plate system for acetabulum anterior column quadrangular body fracture, which comprises a steel plate and a shaper for shaping the steel plate. The steel sheet is including being the steel sheet body of fan ring type and distributing in a plurality of fixed orificess on the steel sheet body, and the middle part outside of steel sheet body is provided with wide-width portion, and wide-width portion is last to distribute and has the fixed orifices.
The shaper comprises a lead screw and a lead screw nut matched with the lead screw, two support arms are symmetrically arranged on two sides of the lead screw nut, the middle part of each support arm is hinged on the lead screw nut, the bottom end of each support arm is pivotally connected with a claw buckle, the top end of each support arm is connected in the measuring scale frame in a sliding manner, and a limiting spring is connected between each support arm and the lead screw nut; the top of lead screw is connected on the motor, and the motor is fixed in handheld frame.
Furthermore, the fixing hole is formed by splicing two round holes which are parallel along the radial direction, and the maximum hole width of the section of the fixing hole is smaller than the sum of the diameters of the two round holes. The fixing hole is made to be in a communicated 8-shaped shape, so that the lag screw can be driven in at multiple angles, and the locking screw can also be driven in a directional mode.
Further, the middle part outside of steel sheet body is provided with three widening portion that distributes along the steel sheet body circumference, all is provided with a fixed orifices on every widening portion.
Further, two barrier strips are arranged on the inner side of the middle of the steel plate body at intervals. The supporting blocks are prevented by the barrier strips from sliding towards the two ends of the steel plate body after being stressed, and the reliability of operation is improved.
Furthermore, the bottom end of the screw nut is rotatably connected with a supporting block, and an arc-shaped through groove for embedding the steel plate body between the two stop bars is formed in the supporting block. The support block is abutted to the middle of the steel plate to provide support, so that the steel plate is bent more easily, and the symmetry of bending amounts of two ends of the steel plate is controlled.
Furthermore, the measuring scale frame is sleeved on the lead screw in a sliding mode, a sliding chute for enabling the top end of the support arm to slide is formed in the measuring scale frame, an observation window for observing the sliding distance of the support arm is formed in the measuring scale frame, and scale marks are arranged at the position of the observation window. The moving distance of the top end of the support arm is read through the observation window on the measuring tape frame, so that the bending amount of the steel plate is judged, and the controllability of the shaping device for the steel plate is improved.
Furthermore, the claw buckle is provided with a clamping groove corresponding to the two ends of the steel plate body in shape. The clamping grooves are used for inserting the two ends of the steel plate body, the claws are buckled and tightly abut against the two ends of the steel plate body under the action of the tension of the limiting spring, and the two ends of the steel plate are stably fixed on the shaping device.
The invention has the beneficial effects that: the steel plate body in the scheme is in a fan-shaped ring shape, one end of the steel plate can safely and effectively fix the pubic ramus, the other end of the steel plate can fix the true pelvis, and the middle part of the steel plate can safely and effectively fix the quadrangular body; the widened part that the outside increases in the middle part of the steel plate body can support the acetabulum antetheca that shifts after reseing, and two rows of fixed orificess on widened part and the steel plate body provide multiple mode for the fixed selection that resets of four sides body fracture, have enlarged the fixed safety window of four sides body fracture.
The shaping device can rapidly and laborsavingly shape and bend the steel plate, the shaping device is clamped at two ends of the steel plate through the claw buckles at the bottom ends of the support arms, the screw rod is driven by the motor to rotate so as to enable the screw rod nut to ascend along the axial direction, and the claw buckles at the bottom ends of the two support arms are driven to approach to the middle under the tensile force of the limiting spring so as to bend the steel plate, so that the pelvis sizes of different patients can be adapted; the deformation of the steel plate can be judged slightly by the sliding quantity of the top end of the upper supporting arm of the measuring tape support, so that the efficiency of shaping the steel plate is improved.
Drawings
Fig. 1 is a schematic structural diagram of an acetabular anterior column quadrangular body fracture anatomical steel plate system.
Fig. 2 is a schematic structural view of a steel plate.
Fig. 3 is a schematic structural view of the shaper.
FIG. 4 is an end view of the tape measure stand adjacent the motor side.
Wherein, 1, steel plate; 11. a steel plate body; 12. a fixing hole; 13. a widening section; 14. blocking strips; 2. a shaping device; 21. a lead screw; 22. a lead screw nut; 23. a support arm; 24. a claw buckle; 241. a card slot; 25. a limiting spring; 26. a motor; 27. a measuring tape holder; 271. a chute; 272. an observation window; 273. scale lines; 28. a hand-held frame; 29. a support block; 291. an arc-shaped through groove.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in fig. 1, the anatomic steel plate system for acetabular anterior column quadrangular body fracture comprises a steel plate 1 and a shaper 2 for shaping the steel plate 1.
As shown in fig. 2, the steel plate 1 includes a steel plate body 11 in a sector ring shape and a plurality of fixing holes 12 distributed on the steel plate body 11, a widened portion 13 is arranged on the outer side of the middle portion of the steel plate body 11, and the fixing holes 12 are distributed on the widened portion 13. The middle part outside of steel sheet body 11 is provided with three widening portion 13 along steel sheet body 11 circumference distribution, all is provided with a fixed orifices 12 on every widening portion 13. The fixing hole 12 is formed by splicing two round holes which are parallel along the radial direction, and the maximum hole width of the section of the fixing hole 12 is smaller than the sum of the diameters of the two round holes.
As shown in fig. 3, the shaper 2 includes a lead screw 21 and a lead screw nut 22 engaged with the lead screw, the lead screw 21 and the lead screw nut 22 are common parts in machinery, and the lead screw nut 22 can move along the axial direction of the lead screw 21 by rotating the lead screw 21 or the lead screw nut 22.
Two support arms 23 are symmetrically arranged on two sides of the screw nut 22, the middle part of each support arm 23 is hinged on the screw nut 22, the bottom end of each support arm 23 is pivotally connected with a claw buckle 24, and the top end of each support arm is slidably connected in the measuring tape frame 27. The arms 23 are able to rotate about their hinges with the lead screw nut 22, during which the top ends of the two arms 23 are far from the bottom end or the top ends of the two arms 23 are far from the bottom end. A limiting spring 25 is connected between the support arm 23 and the screw nut 22, and the limiting spring 25 is a tension spring.
As shown in fig. 3 and 4, a through hole is provided in the middle of the measuring tape holder 27 for the lead screw 21 to pass through so that the measuring tape holder 27 is slidably sleeved on the lead screw 21. The end face of the measuring tape frame 27 facing one end of the screw nut 22 is provided with a sliding groove 271, the top end of the support arm 23 is integrally formed with a boss inserted into the sliding groove 271, the boss can be observed to move through an observation window 272 arranged on the side of the measuring tape frame 27 facing the motor in the sliding process along the sliding groove 271, the moving amount of the boss is obtained by combining a scale line 273 marked on the edge of the observation window 272, the moving amount of the claw buckle at the other end of the support arm 23 can be determined through calculation or experience, and further the deformation amount of the steel plate is obtained.
The claws 24 are provided with engaging grooves 241 corresponding to the shapes of the two ends of the steel plate body 11, and the engaging grooves 241 are engaged with the corners of the outer side of the steel plate 1. The pivotal connection between the claws 24 and the support arms 23 is a tighter pivotal connection, so that the claws 24 can rotate under a larger external force to adapt to the change of the outer angles of the two ends of the steel plate 1. A baffle is integrally formed on the support arm 23 at the pivot connection part of the support arm 23 and the claw buckle 24, and can prevent the claw buckle 24 from rotating outwards so as to prevent the claw buckle 24 from being turned upwards by the reaction force of the steel plate 1.
The top of lead screw 21 is connected on motor 26, drives lead screw 21 through motor 26 and rotates to reduce intensity of labour, improve the moulding efficiency of steel sheet. The motor 26 is fixed on a handheld frame 28, the handheld frame 28 is convenient for an operator to hold, the structure of the handheld frame 28 is the same as that of a steering wheel of an automobile, and the motor 26 is installed in the middle of the handheld frame 28.
Two barrier strips 14 are arranged at intervals on the inner side of the middle part of the steel plate body 11. The bottom end of the screw nut 22 is rotatably connected with a supporting block 29 through a bearing, an arc-shaped through groove 291 for embedding the side face of the steel plate 1 between the two stop strips 14 is processed on the supporting block 29, and the radian of the arc-shaped through groove 291 is close to that of the inner side of the middle part of the steel plate body 1. The support block 29 does not interfere with the rotation of the screw 21 when abutting against the steel plate body 11.
In the operation process, when the steel plate 1 is found to be not in good fit with the bone surface of a wounded person, the two ends of the steel plate 1 are clamped by the shaper 2 to be bent, so that the radian of the steel plate 1 is changed. The working principle of the shaper 2 is as follows: when the screw 21 is rotated, the screw nut 22 tends to move upwards along the axial direction of the screw 21, but the screw nut 22 is connected with the support arm 23, the claws 24 connected to the bottom end of the support arm 23 are caught at the outer sides of the two ends of the steel plate 1, and the force of the screw nut 22 moving upwards drives the limiting spring 25 to pull the claws 24 inwards, so that the claws 24 at the two sides extrude the steel plate 1, and the bending degree of the steel plate 1 is larger.
Claims (7)
1. An anatomic steel plate system for acetabulum anterior column quadrangular fracture is characterized by comprising a steel plate (1) and a shaper (2) for shaping the steel plate (1);
the steel plate (1) comprises a sector-ring-shaped steel plate body (11) and a plurality of fixing holes (12) distributed on the steel plate body (11), wherein a widened part (13) is arranged on the outer side of the middle part of the steel plate body (11), and the fixing holes (12) are distributed on the widened part (13);
the shaper (2) comprises a lead screw (21) and a lead screw nut (22) matched with the lead screw, two support arms (23) are symmetrically arranged on two sides of the lead screw nut (22), the middle part of each support arm (23) is hinged to the lead screw nut (22), the bottom end of each support arm (23) is pivotally connected with a claw buckle (24), the top end of each support arm is connected to a measuring tape frame (27) in a sliding mode, and a limiting spring (25) is connected between each support arm (23) and the lead screw nut (22); the top end of the lead screw (21) is connected to a motor (26), and the motor (26) is fixed on a handheld frame (28).
2. The acetabular anterior column quadrilateral bone fracture anatomical steel plate system according to claim 1, wherein the fixing hole (12) is formed by splicing two circular holes which are arranged in parallel in the radial direction, and the maximum hole width of the cross section of the fixing hole (12) is smaller than the sum of the diameters of the two circular holes.
3. The acetabular anterior column quadrilateral bone fracture anatomical steel plate system according to claim 2, characterized in that the middle outer side of the steel plate body (11) is provided with three widened portions (13) distributed along the circumference of the steel plate body (11), each widened portion (13) being provided with one of the fixation holes (12).
4. The acetabular anterior column quadrangular bone fracture anatomical steel plate system according to claim 1, wherein two barrier strips (14) are arranged at intervals on the inner side of the middle of the steel plate body (11).
5. The acetabular anterior column quadrangular bone fracture anatomical steel plate system according to claim 4, wherein a support block (29) is rotatably connected to the bottom end of the screw rod (21), and an arc-shaped through groove (291) for the steel plate body (11) between the two barrier strips (14) to be embedded is formed in the support block (29).
6. The acetabular anterior column quadrangular bone fracture anatomical steel plate system according to claim 1, wherein the scale frame (27) is slidably sleeved on the lead screw (21), a sliding groove (271) for allowing the top end of the support arm (23) to slide is arranged on the scale frame (27), an observation window (272) for observing the sliding distance of the support arm (23) is arranged on the scale frame (27), and scale lines (273) are arranged at the observation window (272).
7. The anatomic steel plate system for acetabular anterior column quadrangular bone fracture according to claim 1, characterized in that a clamping groove (241) corresponding to the shape of the two ends of the steel plate body (11) is arranged on a claw buckle (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010121252.5A CN111297461B (en) | 2020-02-26 | 2020-02-26 | Acetabulum anterior column quadrangular fracture dissection steel plate system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010121252.5A CN111297461B (en) | 2020-02-26 | 2020-02-26 | Acetabulum anterior column quadrangular fracture dissection steel plate system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111297461A CN111297461A (en) | 2020-06-19 |
| CN111297461B true CN111297461B (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010121252.5A Expired - Fee Related CN111297461B (en) | 2020-02-26 | 2020-02-26 | Acetabulum anterior column quadrangular fracture dissection steel plate system |
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| Country | Link |
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| CN (1) | CN111297461B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2868488Y (en) * | 2005-11-10 | 2007-02-14 | 张启锋 | Medical steel plate single-clamp multi-direction bending plastic clamp |
| CN201015600Y (en) * | 2007-03-06 | 2008-02-06 | 王二丰 | Tiling type fixing and locating racks for treating fracture of patella |
| CN202982181U (en) * | 2012-12-03 | 2013-06-12 | 中国人民解放军第二军医大学 | Bend rod device |
| CN107597902A (en) * | 2017-10-31 | 2018-01-19 | 天津贵和鸿兴钢结构工程有限公司 | A kind of bending mechanism |
| CN207236836U (en) * | 2016-12-31 | 2018-04-17 | 中国人民解放军广州军区武汉总医院 | A kind of acetabular bone squared region dynamic pressurization titanium plate |
| CN207577183U (en) * | 2018-04-25 | 2018-07-06 | 云南建投第二安装工程公司 | Helical orbit simmers Special tamp processed |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9011507B2 (en) * | 2009-10-28 | 2015-04-21 | Orthopro Llc | Compression plate kit and methods for repairing bone discontinuities |
| US10076376B2 (en) * | 2015-05-27 | 2018-09-18 | Medos International Sàrl | Devices and methods for bending or cutting implants |
-
2020
- 2020-02-26 CN CN202010121252.5A patent/CN111297461B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2868488Y (en) * | 2005-11-10 | 2007-02-14 | 张启锋 | Medical steel plate single-clamp multi-direction bending plastic clamp |
| CN201015600Y (en) * | 2007-03-06 | 2008-02-06 | 王二丰 | Tiling type fixing and locating racks for treating fracture of patella |
| CN202982181U (en) * | 2012-12-03 | 2013-06-12 | 中国人民解放军第二军医大学 | Bend rod device |
| CN207236836U (en) * | 2016-12-31 | 2018-04-17 | 中国人民解放军广州军区武汉总医院 | A kind of acetabular bone squared region dynamic pressurization titanium plate |
| CN107597902A (en) * | 2017-10-31 | 2018-01-19 | 天津贵和鸿兴钢结构工程有限公司 | A kind of bending mechanism |
| CN207577183U (en) * | 2018-04-25 | 2018-07-06 | 云南建投第二安装工程公司 | Helical orbit simmers Special tamp processed |
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| Publication number | Publication date |
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| CN111297461A (en) | 2020-06-19 |
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