CN1303943C - Pelvis and spinal column position restoring and internal fixing device for treating lumbar vertebrae olisthy olisthe - Google Patents
Pelvis and spinal column position restoring and internal fixing device for treating lumbar vertebrae olisthy olisthe Download PDFInfo
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- CN1303943C CN1303943C CNB2005100567677A CN200510056767A CN1303943C CN 1303943 C CN1303943 C CN 1303943C CN B2005100567677 A CNB2005100567677 A CN B2005100567677A CN 200510056767 A CN200510056767 A CN 200510056767A CN 1303943 C CN1303943 C CN 1303943C
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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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7055—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant connected to sacrum, pelvis or skull
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Abstract
The present invention relates to a pelvis and vertebral column restoring and inner fixing device for treating lumbar spondylolisthesis, which belong to the technical field of a surgical instrument. The provided pelvis and vertebral column restoring and inner fixing device for treating lumbar spondylolisthesis has the advantages of stable fixation implement and good restoring function, and a fixing nail is not easy to pull out and damage. The present invention is composed of pediculus arcus vertebrae pulling screws, double-head hooks and a sacrum rod, wherein each of the pediculus arcus vertebrae pulling screw comprises a rod-shaped pediculus arcus vertebrae section and a pulling section, one end of the pediculus arcus vertebrae section is provided with the threads of the screws, the other end of the pediculus arcus vertebrae section is connected with the pulling section, the connection point of the pediculus arcus vertebrae section and the pulling section is locked by a universal joint, and an included angle of the two sections is from 80 degrees to 180 degrees after being locked. The other end of the pulling section is provided with connecting threads which are fixedly connected with one end of each of the double-head hook by a locking nut, threads are arranged on the sacrum rod, the number of the pediculus arcus vertebrae pulling screws and the double-head hooks are respectively two, the pediculus arcus vertebrae pulling screws and the double-head hooks are arranged in a eudipleural mode, and the sacrum rod is transversely arranged from top to bottom. The present invention has the advantages of pulling and restoring strength increase, strength and stability increase of a fixing point, continuous pulling and hanging function generation, convenient operation and little damage.
Description
Technical field
The present invention relates to the inner fixing device that a kind of pelvis and spinal column for the treatment of lumbar spondylolisthesis resets, belong to the surgical medical equipment technical field.
Background technology
Lumbar spondylolisthesis is a kind of commonly encountered diseases and frequently-occurring disease of middle-aged and elderly people, and the patient is then pain, limitation of activity gently, heavy then can not take action, LOM, cause very big misery to the patient.Since beginning of the nineties late 1980s, the pedicle nail internal fixation device has obtained using widely clinically, makes the lower lumbar spine resetting orthopedic gradually become reality.Pedicle nail internal fixation device kind is more, the common fixed apparatus that Roy-Canille steel plate, Dick are arranged, CD pedicle nail apparatus, Steffee steel plate, AO internal fixation device, consonance steel plate etc.These apparatuses merge in conjunction with pedicle nail fixation for treatment lumbar spondylolisthesis between way of escape lumbar vertebra and have the fusion rate height, the advantage that can fully reduce pressure to pressurized nervous tissue in the art.But find also that in clinical practice these apparatuses also have some shortcomings, mainly show: what 1. staple and lift nail all at spinal column was a kind of spinal column to spinal column is fixing, and the arm of force is lacked, and it is less to lift reset response; 2. stress raisers easily produce the disconnected rod of broken nail; 3. pedicle nail is straight nail, in operation process or postoperative patient be drawn out easily when movable; 4. staple is pedicle nail with lifting to follow closely, and has increased the danger of pedicle of vertebral arch explosion and nerve injury.Above-mentioned shortcoming make have that little, the straight nail of reset response is drawn out easily after the operation, hidden danger such as constant intensity and the disconnected rod of low, the easy broken nail of stability, not only reduced the effect and the success rate of operation, also may bring and have to implement once more the misery of performing the operation to the patient.Therefore extensive patients and medical worker wish that urgently the technical staff develops advanced more pedicle nail internal fixation device, to improve the reset effect of fixing operation of treatment lumbar spondylolisthesis, make medical worker's operation technique convenient, quick, also make the patient obtain rehabilitation quickly.
Summary of the invention
Technical problem to be solved by this invention provides a kind of shortcoming that overcomes above-mentioned pedicle nail internal fixation device, can implement firm fixing, reset response is good, staple is not drawn out easily and the pelvis and spinal column of the treatment lumbar spondylolisthesis that damages resets inner fixing device.
The technical scheme that solves the problems of the technologies described above is:
A kind of pelvis and spinal column for the treatment of lumbar spondylolisthesis inner fixing device that resets, it is by lifting pedicle screw, double head hook, sacrum rod is formed, lift pedicle screw and comprise the vertebral arch root segment and the section of lifting, they are shaft-like, one end of vertebral arch root segment is a screw thread, the other end is connected with the section of lifting, the junction of the vertebral arch root segment and the section of lifting is connected locking by gimbal suspension, locking back vertebral arch root segment is 80 ° of-180 ° of angle α with the section of lifting, the other end of the section of lifting has connecting thread 11, the two ends of double head hook 2 are respectively equipped with hook 4-1,4-2, the section of lifting connecting thread 11 is fixedlyed connected by locking nut 5 with an end 4-1 of double head hook 2, and sacrum rod is provided with screw thread; Describedly lift pedicle screw 1, double head hook 2 is two, is to be symmetrical set, two sacrum rod 3-1,3-2 are horizontally set up and down.
The pelvis and spinal column of the above-mentioned treatment lumbar spondylolisthesis inner fixing device that resets, the structure of the gimbal suspension of described vertebral arch root segment and the section of lifting junction is: the link of vertebral arch root segment has connecting thread, root at connecting thread, promptly there is ball bumps the position near vertebral arch root segment middle part, link in the section of lifting is a socket arrangement, the ball bumps of it and vertebral arch root segment matches, there is fixing hole in center of arc at ball-and-socket, the connecting thread of the link of vertebral arch root segment passes the ball-and-socket fixing hole by hold-down nut and ball-and-socket locking, and the threaded portion of the section of lifting links to each other with the outside of ball-and-socket 8.
The pelvis and spinal column of the above-mentioned treatment lumbar spondylolisthesis inner fixing device that resets, the screw thread that lifts the vertebral arch root segment of pedicle screw is a saw-tooth thread, and its crest is the umbrella acute angles beta, one side acute angle is straight flange, perpendicular to the axis of screw, its hypotenuse is positioned at the direction that screw screws in.
The pelvis and spinal column of the above-mentioned treatment lumbar spondylolisthesis inner fixing device that resets is provided with the pad of heightening 10 at near-end sacrum rod and double head hook junction.
The above-mentioned pelvis and spinal column inner fixer that resets, described vertebral arch root segment is 90 °-150 ° with lifting intersegmental angle α.
The pelvis and spinal column that adopts the present invention the to treat lumbar spondylolisthesis inner fixing device that resets has following advantage:
1. lift nail and select the pedicle nail screw for use, very strong grip is arranged, tensile load is big, the both sides pedicle screw is fixedly constituting a triangle angle of stability in the vertebra, can form one 80 °-180 ° of angles after gimbal suspension is locked between the vertebral arch root segment and the section of lifting again, therefore constitute two triangle angle of stabilities in vertebral body and outside the vertebral body, produce " skew nailing effect ", increased and lifted the intensity that resets, the disadvantage of having avoided straight nail to be drawn out easily;
2. with the sacrum rod that is fixed in pelvis as fixing point, increased fastened point intensity and stability;
3. be fulcrum with the near-end sacrum rod, two double head hooks produced lift reset response that the lifting the reset response of moment in art is because the elastical retraction of double head hook produces the suspention effect that lifts that continues;
4. easy to operate, damage little.
Description of drawings
Fig. 1 is the reset structural representation of inner fixing device of the pelvis and spinal column of treatment lumbar spondylolisthesis:
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the reset user mode figure of inner fixing device of the pelvis and spinal column of treatment lumbar spondylolisthesis;
Fig. 4 is the thread tooth sketch map that lifts pedicle screw vertebral arch root segment.
Labelling is as follows among the figure:
Lift pedicle screw 1, double head hook 2, sacrum rod 3-1,3-2, hook 4-1,4-2, locking nut 5, connecting thread 6, ball bumps 7, ball-and-socket 8, hold-down nut 9, pad 10 section of lifting connecting threads 11
The specific embodiment
Referring to accompanying drawing, the pelvis and spinal column of this treatment lumbar spondylolisthesis inner fixing device that resets is formed by lifting pedicle screw 1, double head hook 2, sacrum rod 3 three parts, they are 2, lift pedicle screw 1 and double head hook 2 and lay respectively at lumbar vertebra both sides in slippage, and sacrum rod 3 is connected with the both sides ilium.
Lift pedicle screw 1 and comprise the vertebral arch root segment and the section of lifting, they are shaft-like, one end of vertebral arch root segment is a screw thread, its effect is to screw in the lumbar vertebra of slippage vertebral arch root segment and lumbar vertebra are fixed, and the other end of vertebral arch root segment has connecting thread 6 to be connected with the section of lifting, and the junction is a gimbal suspension, the other end of the section of lifting is fixedlyed connected with double head hook 2, the vertebral arch root segment is with after the section of lifting is connected, and the angle α of the two is 80 °-180 °, is generally 90 °-150 °.The screw thread that lifts the vertebral arch root segment of pedicle screw 1 is a saw-tooth thread, and its crest is the umbrella acute angle, one side acute angle is straight flange, perpendicular to the axis of screw, its hypotenuse is positioned at the direction that screw screws in, and such is threaded into easily, it is big that straight flange bears pulling force, is not drawn out easily.
The two ends of double head hook 2 are semicircle hook, and the semicircle hook 4-1 of double head hook 2 one ends is fastenedly connected by the section of lifting connecting thread 11 and with the section of lifting locking nut 5 with the section of lifting that lifts pedicle screw 1, and the semicircle hook 4-2 of the other end is connected with sacrum rod 3-2.
In the present embodiment, the structure that the gimbal suspension of above-mentioned vertebral arch root segment that lifts pedicle screw 1 and the section of lifting junction adopts is: the link at the vertebral arch root segment has connecting thread 6, root at vertebral arch root segment connecting thread 6, promptly there is ball bumps 7 position near vertebral arch root segment middle part, at the section of lifting and the link vertebral arch root segment is ball-and-socket 8, the ball bumps 7 of it and vertebral arch root segment matches, there is fixing hole in center of arc at ball-and-socket 8, vertebral arch root segment connecting thread 6 passes the fixing hole of the section of lifting ball-and-socket 8, make its ball bumps 7 match with ball-and-socket 8, by rear and vertebral arch root segment connecting thread 6 lockings of hold-down nut 9, the vertebral arch root segment and the section of lifting are connected and fixed again at ball-and-socket 8.
When implementing operation, continuous epidural anesthesia, the ventricumbent position, the center longitudinal incision, squeeze in the pedicle of vertebral arch of slippage lumbar vertebra both sides and lift pedicle screw 1, place two sacrum rods 3 between the crista iliaca of both sides, 2 hook end 4-2 hook distally sacrum rod 3-2 with double head hook, with nearside sacrum rod 3-1 is fulcrum, places the shape of a saddle pad of heightening 10 in case of necessity between nearside sacrum rod 3-1 and double head hook 2.The semicircle hook 4-1 of double head hook 2 links to each other with the section of lifting that lifts pedicle screw 1, after the direction of the ball-and-socket 8 of the adjustment section of lifting, be locked with vertebral arch root segment hold-down nut 9, screw the section of lifting locking nut 5 again, make double head hook 2 and lift pedicle screw 1 locking, produce simultaneously to lift and reset and vertically strut effect.
Claims (5)
1. a pelvis and spinal column for the treatment of lumbar spondylolisthesis inner fixing device that resets, it is characterized in that: it is by lifting pedicle screw, double head hook, sacrum rod is formed, lift pedicle screw and comprise the vertebral arch root segment and the section of lifting, they are shaft-like, one end of vertebral arch root segment is a screw thread, the other end is connected with the section of lifting, the junction of the vertebral arch root segment and the section of lifting is connected locking by gimbal suspension, locking back vertebral arch root segment is 80 ° of-180 ° of angle α with the section of lifting, the other end of the section of lifting has connecting thread [11], the two ends of double head hook [2] are respectively equipped with hook [4-1,4-2], the section of lifting connecting thread [11] is fixedlyed connected by locking nut [5] with an end [4-1] of double head hook [2], and sacrum rod is provided with screw thread; Describedly lift pedicle screw [1], double head hook [2] is two, is to be symmetrical set, two sacrum rods [3-1,3-2] are horizontally set up and down.
2. the pelvis and spinal column of the treatment lumbar spondylolisthesis according to claim 1 inner fixing device that resets, it is characterized in that: the structure of the gimbal suspension of described vertebral arch root segment and the section of lifting junction is, the link of vertebral arch root segment has connecting thread [6], root at connecting thread [6] has ball bumps [7], link in the section of lifting is ball-and-socket [a 8] structure, the ball bumps [7] of it and vertebral arch root segment matches, there is fixing hole in center of arc at ball-and-socket [8], the connecting thread of the link of vertebral arch root segment [6] passes the ball-and-socket fixing hole by hold-down nut [9] and ball-and-socket [8] locking, and the threaded portion of the section of lifting is in the below of ball-and-socket [8].
3. the inner fixing device that the pelvis and spinal column of treatment lumbar spondylolisthesis according to claim 1 and 2 resets, it is characterized in that: the screw thread that lifts the vertebral arch root segment of pedicle screw [1] is a saw-tooth thread, its crest is the umbrella acute angle, one side of acute angle is straight flange, perpendicular to the axis of screw, its hypotenuse is positioned at the direction that screw screws in.
4. the inner fixing device that the pelvis and spinal column of treatment lumbar spondylolisthesis according to claim 3 resets is characterized in that: at near-end sacrum rod [3-1] and double head hook junction the pad of heightening [10] is arranged.
5. the inner fixing device that the pelvis and spinal column of treatment lumbar spondylolisthesis according to claim 1 and 2 resets is characterized in that described vertebral arch root segment is 90 °-150 ° with lifting intersegmental angle α.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100567677A CN1303943C (en) | 2005-03-25 | 2005-03-25 | Pelvis and spinal column position restoring and internal fixing device for treating lumbar vertebrae olisthy olisthe |
| DE200610008295 DE102006008295A1 (en) | 2005-03-25 | 2006-02-22 | Pelvis and spinal column position restoring and internal fixing device for treating lumbar vertebrae olisthy olisthe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100567677A CN1303943C (en) | 2005-03-25 | 2005-03-25 | Pelvis and spinal column position restoring and internal fixing device for treating lumbar vertebrae olisthy olisthe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1666718A CN1666718A (en) | 2005-09-14 |
| CN1303943C true CN1303943C (en) | 2007-03-14 |
Family
ID=35038108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100567677A Expired - Fee Related CN1303943C (en) | 2005-03-25 | 2005-03-25 | Pelvis and spinal column position restoring and internal fixing device for treating lumbar vertebrae olisthy olisthe |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1303943C (en) |
| DE (1) | DE102006008295A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102499744B (en) * | 2011-09-30 | 2014-07-16 | 许光昶 | Universal vertebral body reduction device for orthopedic vertebral column surgery |
| CN102488548B (en) * | 2011-11-30 | 2013-09-18 | 上海拓腾医疗器械有限公司 | Internal fixing device and internal fixing method of vertebral columns |
| US10179014B1 (en) | 2012-06-01 | 2019-01-15 | Nuvasive, Inc. | Systems and methods for promoting sacroiliac joint fusion |
| CN105326548B (en) * | 2015-10-28 | 2017-08-25 | 郑明辉 | Anterior approach lifts fixing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6096039A (en) * | 1998-05-13 | 2000-08-01 | Howmedica Gmbh | Means for interconnecting two spaced elongated rods of a human spine implant |
| CN2598518Y (en) * | 2003-01-29 | 2004-01-14 | 邱贵兴 | Vertebral column vertebral arch pedicle internal fixing device and special instrument |
| CN2626446Y (en) * | 2003-06-27 | 2004-07-21 | 丁亮华 | Inner fixer for lumbar diaplasis |
-
2005
- 2005-03-25 CN CNB2005100567677A patent/CN1303943C/en not_active Expired - Fee Related
-
2006
- 2006-02-22 DE DE200610008295 patent/DE102006008295A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6096039A (en) * | 1998-05-13 | 2000-08-01 | Howmedica Gmbh | Means for interconnecting two spaced elongated rods of a human spine implant |
| CN2598518Y (en) * | 2003-01-29 | 2004-01-14 | 邱贵兴 | Vertebral column vertebral arch pedicle internal fixing device and special instrument |
| CN2626446Y (en) * | 2003-06-27 | 2004-07-21 | 丁亮华 | Inner fixer for lumbar diaplasis |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006008295A1 (en) | 2006-10-05 |
| CN1666718A (en) | 2005-09-14 |
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20070314 |