CN103126756A - Posterior pelvic ring fracture minimally-invasive fixator - Google Patents
Posterior pelvic ring fracture minimally-invasive fixator Download PDFInfo
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- CN103126756A CN103126756A CN2013100449891A CN201310044989A CN103126756A CN 103126756 A CN103126756 A CN 103126756A CN 2013100449891 A CN2013100449891 A CN 2013100449891A CN 201310044989 A CN201310044989 A CN 201310044989A CN 103126756 A CN103126756 A CN 103126756A
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- screw
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- connection rod
- pelvic ring
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Abstract
The invention relates to the technical field of medical devices, particularly to a posterior pelvic ring fracture minimally-invasive fixator which is used for the fixation of unstable posterior pelvic ring fractures such as sacroiliac dislocation or sacrum fractures. The posterior pelvic ring fracture minimally-invasive fixator is composed of a connection rod and fixing screws. The connection rod comprises a left connection rod (1) and a right connection rod (2), the left connection rod and the right connection rod are respectively composed of a threaded portion and an unthreaded portion and are connected into a whole through the connection of a threaded portion (3) and a threaded portion (4). The unthreaded portions at both ends of the connection rod are respectively provided with screw holes A and screw holes B, a needle guide channel is arranged in the center of the connection rod, and the tail end of the fixing screw (6) is a nut (7). The posterior pelvic ring fracture minimally-invasive fixator is simple in structure, easy to operate, minimal in invasion, beneficial to the healing of a wound and good in counter-rotation effect, can provide a reliable reduction fixation, and can effectively fix unstable posterior pelvic ring fractures such as the sacroiliac dislocation and the sacrum fractures, thereby facilitating restoring to a normal anatomical structure.
Description
Technical field
The present invention relates to technical field of medical instruments, is for the fixing a kind of posterior ring pelvic fracture Wicresoft holder of the unstable posterior ring pelvic fracture such as sacroiliac joint displacement or fracture of the sacrum.
Background technology
Pelvis is a loop configuration, cause that easily pelvis is unstable after the ring damage before and after it, especially afterwards the sacroiliac joint complex injury of ring causes rotation and vertical instability, as can not get effective treatment, normal anatomical structures can not be recovered, pelvis deformation, the pelvis late complications such as transmitting influenced, hip pain, ilium sacrum arthralgia, two leg length discrepancy, limping that bear a heavy burden will be caused.The fixing means that is used for the treatment of clinically at present unstable posterior ring pelvic fracture adopts in sacroiliac screw and steel plate fixing more.sacroiliac screw is one piece of thicker screw, the central authorities of this screw are provided with the guide pin passage, because the pelvis sacroiliac joint is divided into left sacroiliac joint and right sacroiliac joint, the rumpbone vertebral body is between the ilium of left and right, when the rumpbone vertebral fracture, its fixing means is: with two pieces of sacroiliac screws respectively by the guide pin passage under the guiding of guide pin by a left side, ILR screws in the rumpbone vertebral body through sacroiliac joint, left ilium is fixed together through the left side of left sacroiliac joint and rumpbone vertebral body, ILR is fixed together through the right side of right sacroiliac joint and rumpbone vertebral body, to reach the purpose that resets and fix, but due to a left side, unguyed fixed between ILR, rumpbone vertebral fracture position easily produces dislocation because of activity, and easily damage sacral nerves when screwing in screw, also higher to the requirement of fluoroscopy during operation, therefore the incidence rate of postoperative complication is higher.Internal fixation with steel plate adopts steel plate and screw that left and right ilium is fixed, the two ends that also are about to steel plate are screwed respectively in left and right ilium, screw is fixed together through sacroiliac joint and rumpbone vertebral body respectively at left and right ilium, thereby reach resetting and fixing purpose of fracture, its advantage be made up the sacroiliac screw fixation can not be with the defective of being fixed between left and right ilium, but weak point is: 1) inserting steel plate needs larger otch, appear difficulty from the front, complicated operation, hemorrhage many, operation wound is large; 2) the steel plate two ends are respectively fixed with a screw, and anti-turning effort is poor; 3) length of steel plate can only be selected different model, and the elasticity that can not regulate between left and right ilium fits tightly the fracture face, is unfavorable for the healing of fracturing sequela also easily occurring.
Summary of the invention
The invention provides a kind ofly insert conveniently, damage is little, can effectively treat the posterior ring pelvic fracture Wicresoft holder of the unstable posterior ring pelvic fracture such as sacroiliac joint displacement or fracture of the sacrum.
The present invention is comprised of connecting rod and hold-down screw.Connecting rod is comprised of left connecting rod and right connecting rod, left and right connecting rod respectively is divided into thread segment and non-threaded section two parts, the thread segment of one side (as the left side) connecting rod is external screw thread, the thread segment of opposite side (as the right side) connecting rod is female thread, external screw thread and the female thread of left and right connecting rod thread segment mate mutually, fit linking by thread segment is connected as a single entity left and right connecting rod, the left and right two terminal circle of connecting rod is blunt, in case injure soft tissue, central authorities are provided with the guide pin passage, are used for inserting guide pin.Non-threaded section of the connecting rod two ends respectively is provided with screw A and two screws of screw B, screw A and screw B are different from the angle between connecting rod is vertical, for example the direction of screw A and connecting rod vertically be 65 the degree angle, the direction of screw B and connecting rod vertically are miter angle, after implantation, screw A is parallel with up and down sour jujube line after ilium, and screw B is parallel with auricular surface, and screw A and screw B all do not establish female thread.Hold-down screw is provided with external screw thread, and on its external diameter and screw thread and connecting rod, internal diameter and the screw thread of screw A and screw B are complementary, and the tail end of screw is nut, and its end face is the interior hexagon of depression, in order to the hexagon screwdriver, screw is screwed.
during use, a vertical straight cut is respectively done at 1cm place, the outside under the bilateral posterior superior iliac spine of left and right, otch is about 2cm, appear the bilateral posterior superior iliac spine, with corresponding drill bit, the bilateral posterior superior iliac spine is holed, set up the passage of placing connecting rod, then, first guide pin is inserted this connecting rod passage, again at the two ends of guide pin respectively the guide pin passage by connecting rod central authorities insert a left side, right connecting rod, and make a left side, the thread segment fit docking of right connecting rod, extract guide pin out, regulate screw thread, make connecting rod circle blunt two ends respectively with a left side, the ILR auricular surface roughly maintains an equal level, and make a left side, reach suitable tightness between ILR, adjust the screw A on connecting rod, B, the direction that makes them parallels with up and down sour jujube line and auricular surface after ilium respectively, aligning screw A and B pass screw by ilium and insert respectively two pieces of hold-down screws, nut by the screw tail end screws it with hold-down screw, make connecting rod two ends be individually fixed in a left side, on ILR, last layer-by-layer suture otch gets final product.
The present invention is simple in structure, and is easy to operate, and because a less otch of need can be inserted, so wound is little, is conducive to wound healing; Because connecting rod is comprised of left connecting rod and right connecting rod, dock by thread segment again, so the tightness between the left and right ilium of scalable, be conducive to fitting tightly of the face of fracturing; Moreover also have the screw of two different angles to fix between connecting rod and left and right ilium, anti-turning effort is good, therefore making reset fixing more reliable.The present invention is the unstable posterior ring pelvic fracture such as sacroiliac joint displacement or fracture of the sacrum effectively fixedly, is conducive to return to normal anatomical structures.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is left connecting rod structural representation of the present invention.
Fig. 3 is right connecting rod structural representation of the present invention.
Fig. 4 is hold-down screw structural representation of the present invention.
The specific embodiment
Now the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
The present invention is comprised of connecting rod and hold-down screw, connecting rod is comprised of left connecting rod 1 and right connecting rod 2, left and right connecting rod respectively is divided into thread segment and non-threaded section two parts, the thread segment 3 of left connecting rod is external screw thread, the thread segment 4 of right connecting rod is female thread, the female thread of the external screw thread of thread segment 3 and thread segment 4 mates mutually, and the fit linking by thread segment 3 and thread segment 4 is connected as a single entity left and right connecting rod; Non-threaded section of the connecting rod two ends respectively is provided with screw A and screw B, screw A and screw B are different from the angle between connecting rod is vertical, for example the direction of screw A and connecting rod vertically are 65 degree angles, after implantation, its with ilium after up and down the sour jujube line is parallel, the direction of screw B and connecting rod vertically are miter angle, after implantation, it is parallel with auricular surface, and screw A and screw B all do not establish female thread, the left and right two terminal circle of connecting rod is blunt, and central authorities are provided with guide pin passage 5.The tail end of hold-down screw 6 is nut 7, and screw 6 is provided with external screw thread, and on its external diameter and screw thread and connecting rod, internal diameter and the screw thread of screw A and screw B are complementary, and the end face of nut 7 is the interior hexagon of depression.
1 one kinds of embodiment posterior ring pelvic fracture Wicresoft holder
Connecting rod external diameter 12mm of the present invention, the guide pin passage 5 internal diameter 4mm of central authorities, left connecting rod 1 overall length 75mm, wherein the long 30mm of thread segment 3, be provided with external screw thread, its external diameter 9mm; Right connecting rod 2 overall length 75mm, the long 30mm of thread segment 4 is provided with female thread, the external diameter of the internal diameter of thread segment 4 and screw thread and thread segment 3 and external screw thread coupling.On left and right connecting rod, the internal diameter of screw A and screw B is 5mm, the spacing of screw A and screw B is 16mm, screw A and B divide and take leave of connecting rod end face 27mm and 11mm, and the direction of screw A and connecting rod are 65 degree angles between vertically, and the direction of screw B and connecting rod are 45 between vertically and spend angles.The long 50mm of hold-down screw 6, external diameter 5mm, nut 7 is interior hexagon nut.
The present invention can make different specifications and models as required.
Claims (2)
1. posterior ring pelvic fracture Wicresoft holder, it is characterized in that being formed by connecting rod and hold-down screw, connecting rod is comprised of left connecting rod (1) and right connecting rod (2), left and right connecting rod respectively is divided into thread segment and non-threaded section two parts, the thread segment of left connecting rod (3) is external screw thread, the thread segment of right connecting rod (4) is female thread, the female thread of the external screw thread of thread segment (3) and thread segment (4) mates mutually, fit by thread segment (3) and thread segment (4) is connected, and left and right connecting rod is connected as a single entity; Non-threaded section of the connecting rod two ends respectively is provided with screw A and screw B, the direction of screw A and screw B is different from the angle between connecting rod is vertical, screw A and screw B all do not establish female thread, and the left and right two terminal circle of connecting rod is blunt, and connecting rod central authorities are provided with guide pin passage (5); The tail end of hold-down screw (6) is nut (7), and hold-down screw (6) is provided with external screw thread, and on its external diameter and screw thread and connecting rod, internal diameter and the screw thread of screw A and screw B are complementary.
2. by posterior ring pelvic fracture claimed in claim 1 Wicresoft holder, the direction that it is characterized in that screw A and connecting rod are 65 degree angles between vertically, are 45 between the direction of screw B and connecting rod are vertical and spend angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310044989.1A CN103126756B (en) | 2013-02-04 | 2013-02-04 | Posterior pelvic ring fracture minimally-invasive fixator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310044989.1A CN103126756B (en) | 2013-02-04 | 2013-02-04 | Posterior pelvic ring fracture minimally-invasive fixator |
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| Publication Number | Publication Date |
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| CN103126756A true CN103126756A (en) | 2013-06-05 |
| CN103126756B CN103126756B (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310044989.1A Expired - Fee Related CN103126756B (en) | 2013-02-04 | 2013-02-04 | Posterior pelvic ring fracture minimally-invasive fixator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107280755A (en) * | 2017-06-09 | 2017-10-24 | 青岛迈恩特医学科技有限公司 | A kind of minimally invasive fixed bracing means of orthopaedics fracture |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2037217U (en) * | 1988-08-30 | 1989-05-10 | 中国人民解放军空军上海第一医院 | Single-side outside fixator for fracture |
| US20030191470A1 (en) * | 2002-04-05 | 2003-10-09 | Stephen Ritland | Dynamic fixation device and method of use |
| US20050033439A1 (en) * | 2003-08-05 | 2005-02-10 | Charles Gordon | Artificial functional spinal unit assemblies |
| US20070293862A1 (en) * | 2005-09-30 | 2007-12-20 | Jackson Roger P | Dynamic stabilization connecting member with elastic core and outer sleeve |
| CN201012125Y (en) * | 2007-03-26 | 2008-01-30 | 孙鲁伟 | Adjustable pelvis rack |
| US20080195208A1 (en) * | 2007-02-09 | 2008-08-14 | Altiva Corporation | Dynamic stabilization device |
| US20080234733A1 (en) * | 2007-03-19 | 2008-09-25 | Kelly Scrantz | Vertebral stabilization devices and associated surgical methods |
| CN101612054A (en) * | 2009-07-24 | 2009-12-30 | 王铁铸 | External-distraction pedicle screw-rod bracket of vertebral body |
| CN203074841U (en) * | 2013-02-04 | 2013-07-24 | 中国人民解放军第二军医大学 | Minimally-invasive posterior pelvic ring locking and fixing system |
-
2013
- 2013-02-04 CN CN201310044989.1A patent/CN103126756B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2037217U (en) * | 1988-08-30 | 1989-05-10 | 中国人民解放军空军上海第一医院 | Single-side outside fixator for fracture |
| US20030191470A1 (en) * | 2002-04-05 | 2003-10-09 | Stephen Ritland | Dynamic fixation device and method of use |
| US20050033439A1 (en) * | 2003-08-05 | 2005-02-10 | Charles Gordon | Artificial functional spinal unit assemblies |
| US20070293862A1 (en) * | 2005-09-30 | 2007-12-20 | Jackson Roger P | Dynamic stabilization connecting member with elastic core and outer sleeve |
| US20080195208A1 (en) * | 2007-02-09 | 2008-08-14 | Altiva Corporation | Dynamic stabilization device |
| US20080234733A1 (en) * | 2007-03-19 | 2008-09-25 | Kelly Scrantz | Vertebral stabilization devices and associated surgical methods |
| CN201012125Y (en) * | 2007-03-26 | 2008-01-30 | 孙鲁伟 | Adjustable pelvis rack |
| CN101612054A (en) * | 2009-07-24 | 2009-12-30 | 王铁铸 | External-distraction pedicle screw-rod bracket of vertebral body |
| CN203074841U (en) * | 2013-02-04 | 2013-07-24 | 中国人民解放军第二军医大学 | Minimally-invasive posterior pelvic ring locking and fixing system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107280755A (en) * | 2017-06-09 | 2017-10-24 | 青岛迈恩特医学科技有限公司 | A kind of minimally invasive fixed bracing means of orthopaedics fracture |
| CN107280755B (en) * | 2017-06-09 | 2023-11-17 | 山东美珂医疗科技有限公司 | Minimally invasive fixation and reinforcement device for bone fracture |
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| Publication number | Publication date |
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| CN103126756B (en) | 2015-04-15 |
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