CN203074841U - Minimally-invasive posterior pelvic ring locking and fixing system - Google Patents
Minimally-invasive posterior pelvic ring locking and fixing system Download PDFInfo
- Publication number
- CN203074841U CN203074841U CN 201320063990 CN201320063990U CN203074841U CN 203074841 U CN203074841 U CN 203074841U CN 201320063990 CN201320063990 CN 201320063990 CN 201320063990 U CN201320063990 U CN 201320063990U CN 203074841 U CN203074841 U CN 203074841U
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- screw
- connecting rod
- connection rod
- thread
- pelvic ring
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Abstract
The utility model relates to the technical field of medical instruments and discloses a minimally-invasive posterior pelvic ring locking and fixing system used for fixation of unstable posterior pelvic ring fracture of sacroiliac joint displacement or sacral bone fracture and the like. The minimally-invasive posterior pelvic ring locking and fixing system is composed of a connection rod and a fixing screw. The connection rod is composed of a left connection rod (1) and a right connection rod (2). The left connection rod and the right connection rod are respectively provided with a threaded segment and a non-threaded segment, and the left connection rod and the right connection rod are connected integrally by joining of a threaded segment (3) and a threaded segment (4). A threaded hole A and a threaded hole B are respectively formed in the non-threaded segments at two ends of the connection rod, and a guide needle channel (5) is arranged in the middle of the connection rod. A nut (7) is arranged at the tail end of a fixing screw (6). The minimally-invasive posterior pelvic ring locking and fixing system is simple in structure, convenient to operate, small in trauma, beneficial to wound healing, and good in anti-rotating effect, therefore, the minimally-invasive posterior pelvic ring locking and fixing system is stable in reset fixing, can effectively fix the unstable posterior pelvic ring fracture of the sacroiliac joint displacement or the sacral bone fracture and the like, and is beneficial to recovery of the unstable posterior pelvic ring fracture to a normal anatomical structure.
Description
Technical field
This utility model relates to technical field of medical instruments, is to be used for the fixed a kind of Wicresoft of unstable posterior ring pelvic fracture posterior ring pelvic locking fixed systems such as sacroiliac joint displacement or fracture of the sacrum.
Background technology
Pelvis is a loop configuration, cause the pelvis instability easily after the ring damage before and after it, especially the sacroiliac joint complex damage of back ring causes rotation and vertical instability, as can not get effective treatment, normal anatomical structures can not be recovered, late complications such as pelvis is out of shape, pelvis heavy burden transmission is influenced, hip pain, ilium sacrum arthralgia, two leg length discrepancy, limping will be caused.The fixing means that is used for the treatment of at present unstable posterior ring pelvic fracture clinically adopts sacroiliac screw and steel plate internal fixation 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 the left and right sides, 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, reset and fixed purpose to reach, a but because left side, unguyed fixed between the ILR, rumpbone vertebral fracture position produces dislocation because of activity easily, and damage sacral nerves easily when screwing in screw, also to the requirement of having an X-rayed in the art than higher, so 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 fixed purpose of fracture, its advantage be remedied the sacroiliac screw fixation can not be with the defective of being fixed between the left and right ilium, but weak point is: 1) inserting steel plate needs bigger otch, appear difficulty from the front, complicated operation, hemorrhage many, operation wound is big; 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 the left and right ilium fits tightly the fracture face, is unfavorable for the healing of fracturing also occurring sequela easily.
Summary of the invention
This utility model provides a kind of and inserts conveniently, damages little, as effectively to treat unstable posterior ring pelvic fracture such as sacroiliac joint displacement or fracture of the sacrum Wicresoft's posterior ring pelvic locking fixed system.
This utility model is made up of connecting rod and hold-down screw.Connecting rod is made up 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 an external screw thread, the thread segment of opposite side (as the right side) connecting rod is a female thread, the 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 to insert 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 with the angle between connecting rod is vertical, for example the direction of screw A and connecting rod vertically are 65 degree angles, the direction of screw B and connecting rod vertically are miter angle, after the implantation, the sour jujube line is parallel up and down behind screw A and the 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 internal diameter and the screw thread of screw A and screw B are complementary on its external diameter and screw thread and the connecting rod, and the tail end of screw is a nut, and its end face is the interior hexagon of depression, so that with 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 the left and right sides, 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, earlier guide pin is inserted this connecting rod passage, insert a left side by the guide pin passage of connecting rod central authorities respectively at the two ends of guide pin again, right connecting rod, and make a left side, guide pin is extracted in the thread segment fit butt joint of right connecting rod out, regulates screw thread, make the blunt two ends of connecting rod circle respectively with a left side, the ILR auricular surface roughly maintains an equal level, and make a left side, reach suitable tightness between the ILR, adjust the screw A on the connecting rod, B, the direction that makes them is respectively with sour jujube line and auricular surface parallel up and down behind the ilium, aligning screw A and B pass screw by ilium and insert two pieces of hold-down screws respectively, nut by the screw tail end screws it with hold-down screw, makes the connecting rod two ends be individually fixed in a left side, on the ILR, last layer-by-layer suture otch gets final product.
This utility model is simple in structure, and is easy to operate, owing to only need less otch to insert, so wound is little, helps wound healing; Because connecting rod is made up of left connecting rod and right connecting rod, dock again by thread segment, so the tightness between the left and right ilium of scalable, help fitting tightly of the face of fracturing; Moreover also have the screw of two different angles to fix between connecting rod and the left and right ilium, anti-turning effort is good, therefore making reset fixing more reliable.This utility model is unstable posterior ring pelvic fracture such as sacroiliac joint displacement or fracture of the sacrum effectively fixedly, helps returning to normal anatomical structures.
Description of drawings
Fig. 1 is an overall structure sketch map of the present utility model.
Fig. 2 is a left connecting rod structural representation of the present utility model.
Fig. 3 is a right connecting rod structural representation of the present utility model.
Fig. 4 is a hold-down screw structural representation of the present utility model.
The specific embodiment
Now in conjunction with the accompanying drawings and embodiments this utility model is described in detail.
This utility model is made up of connecting rod and hold-down screw, connecting rod is made up 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 side connecting rod is an external screw thread, the thread segment 4 of right connecting rod is a 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 with the angle between connecting rod is vertical, for example the direction of screw A and connecting rod vertically be 65 the degree angles, after the implantation, its with ilium after about the sour jujube line parallel, the direction of screw B and connecting rod vertically are miter angle, after the 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 a nut 7, and screw 6 is provided with external screw thread, and internal diameter and the screw thread of screw A and screw B are complementary on its external diameter and screw thread and the connecting rod, and the end face of nut 7 is the interior hexagon of depression.
1 one kinds of Wicresofts of embodiment posterior ring pelvic locking fixed system
Connecting rod external diameter 12mm of the present utility model, the guide pin passage 5 internal diameter 4mm of central authorities, left connecting rod 1 length overall 75mm, wherein thread segment 3 long 30mm are provided with external screw thread, its external diameter 9mm; Right connecting rod 2 length overall 75mm, thread segment 4 long 30mm are 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.The internal diameter of screw A and screw B is 5mm on the left and right connecting rod, the spacing of screw A and screw B is 16mm, screw A and B branch are taken leave of connecting rod end face 27mm and 11mm, are 65 degree angles between the direction of screw A and connecting rod are vertical, are 45 degree angles between the direction of screw B and connecting rod are vertical.Hold-down screw 6 long 50mm, external diameter 5mm, nut 7 is interior hexagon nut.
This utility model can be made different specifications and models as required.
Claims (2)
1. Wicresoft's posterior ring pelvic locks fixed system, it is characterized in that forming by connecting rod and hold-down screw, connecting rod is made up 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 side connecting rod is an external screw thread, the thread segment (4) of right connecting rod is a 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 with 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 internal diameter and the screw thread of screw A and screw B are complementary on its external diameter and screw thread and the connecting rod.
2. by the described Wicresoft of claim 1 posterior ring pelvic locking fixed system, 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 |
|---|---|---|---|
| CN 201320063990 CN203074841U (en) | 2013-02-04 | 2013-02-04 | Minimally-invasive posterior pelvic ring locking and fixing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320063990 CN203074841U (en) | 2013-02-04 | 2013-02-04 | Minimally-invasive posterior pelvic ring locking and fixing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203074841U true CN203074841U (en) | 2013-07-24 |
Family
ID=48820730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320063990 Withdrawn - After Issue CN203074841U (en) | 2013-02-04 | 2013-02-04 | Minimally-invasive posterior pelvic ring locking and fixing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203074841U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103126756A (en) * | 2013-02-04 | 2013-06-05 | 中国人民解放军第二军医大学 | Posterior pelvic ring fracture minimally-invasive fixator |
| CN110678133A (en) * | 2017-05-31 | 2020-01-10 | 纳萨尔·萨迪克 | Threaded joint for supporting and stabilizing the posterior pelvic ring fracture or for stabilizing and strengthening the sacroiliac joint |
| CN110680491A (en) * | 2019-09-29 | 2020-01-14 | 北京市春立正达医疗器械股份有限公司 | Adjustment device for adjusting the spacing between adjacent bones |
-
2013
- 2013-02-04 CN CN 201320063990 patent/CN203074841U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103126756A (en) * | 2013-02-04 | 2013-06-05 | 中国人民解放军第二军医大学 | Posterior pelvic ring fracture minimally-invasive fixator |
| CN103126756B (en) * | 2013-02-04 | 2015-04-15 | 中国人民解放军第二军医大学 | Posterior pelvic ring fracture minimally-invasive fixator |
| CN110678133A (en) * | 2017-05-31 | 2020-01-10 | 纳萨尔·萨迪克 | Threaded joint for supporting and stabilizing the posterior pelvic ring fracture or for stabilizing and strengthening the sacroiliac joint |
| CN110680491A (en) * | 2019-09-29 | 2020-01-14 | 北京市春立正达医疗器械股份有限公司 | Adjustment device for adjusting the spacing between adjacent bones |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130724 Effective date of abandoning: 20150415 |
|
| RGAV | Abandon patent right to avoid regrant |