CN102871721A - Sacrum female and male hollow pressurizing screw - Google Patents
Sacrum female and male hollow pressurizing screw Download PDFInfo
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- CN102871721A CN102871721A CN2012104158551A CN201210415855A CN102871721A CN 102871721 A CN102871721 A CN 102871721A CN 2012104158551 A CN2012104158551 A CN 2012104158551A CN 201210415855 A CN201210415855 A CN 201210415855A CN 102871721 A CN102871721 A CN 102871721A
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Abstract
The invention provides a sacrum female and male hollow pressurizing screw which is fixedly implanted into an injured posterior ring after the vertical unstable pelvis of a human body is fractured, so as to solve the problems of the prior art that a conventional tension screw has not enough holding force to fix the fracture and the fixation is easily loosened. The sacrum female and male hollow pressurizing screw comprises a male screw, a female screw and a pair of gaskets which is arranged on both ends of the screws; the front section of the male screw is provided with an external thread; the front section of the female screw is provided with an internal thread; the male screw and the female screw are in threaded matching; the centers of the male screw and the female screw are provided with hollow holes; and the hollow holes are through holes. Due to the minimally invasive concept design of the screw and a hollow guiding device, the operation time is shortened and the injury to the surrounding tissue is reduced. The sacrum female and male hollow pressurizing screw is made of a titanium alloy, has good histocompatibility, light weight and good strength, has different models, and can be used for pelvis with different sizes. The operation is simple, the positioning is accurate, the internal fixation is stable, the pressurization is reliable, the internal fixed object does not easily fall off aid is not easily loosened after operation, and the removal in the future is convenient.
Description
Technical field
The invention belongs to medical apparatus and instruments, particularly a kind of internal fixation implantation instrument for the treatment of ring damage behind the human body vertical instability fracture of pelvis.
Background technology
Adopted steel plate, sacrum rod and lag screw to fix for ring damage behind the vertical instability fracture of pelvis in the past, Clinical Practice, the fixing damage of steel plate is large, in the implantation process of screw, easily accidentally injure the damage of nerve of sacral plexus and venous plexus, cause corresponding function obstacle and paraesthesia, operative hemorrhage appears in injured blood vessel to be increased, hemorrhage herein, anthemorrhagic difficulty prolongs operating time; In adopting the sacrum rod fixation procedure because not adopting the theory of Wicresoft, damage to ilium and surrounding soft tissue is larger, the screw designs that adopts general industry to use at the two ends of rod, so that instrument supports the use difficulty in fixation procedure, and in the taking-up process in later stage, cause the taking-up instrument not mate and prolong operating time and damage strengthens, even can not take out; The conventional lag screw that uses, there is not hollow design, so that in implantation process accurate poor location, secondary is implanted and is strengthened damage on every side, the screw thread of common lag screw mainly concentrates on the leading portion of screw rod, and strength mainly concentrates on the interlock position of screw thread and offside ilium, because ilium is spongy bone, often cause hold to be not enough to fixing fracture, or fixing easily loosening.
Summary of the invention
The purpose of this invention is to provide a kind of hollow forcing screw of rumpbone primary and secondary for the interior fixing implantation of ring damage behind the human body vertical instability fracture of pelvis, the hold that exists with the lag screw that solves conventional use in the prior art is not enough to fixing the fracture and fixing easy loosening problem.
For achieving the above object, the present invention is by the following technical solutions:
The hollow forcing screw of a kind of rumpbone primary and secondary is comprised of son nail, female nail and a pair of pad that is arranged on the screw two ends, the leading portion band external screw thread of described son nail, the leading portion band female thread of female nail, son nail and female oncomelania stricture of vagina cooperate, and the center of described son nail and female nail is provided with hollow hole, and described hollow hole is through hole.
The rearward end of described son nail is provided with hemispheric son nail nail tail, and the rearward end of described female nail is provided with hemispheric female nail nail tail, and the centre of son nail nail tail and female nail nail tail is provided with the interior six side's grooves that cave inward; The top of described two pads is the sphere band of concave shaped sphere with the junction of son nail nail tail and female nail nail tail, and the outside internal ring of pad forms banded depression ring, is that the hemispherical profile is to corresponding with son nail nail tail and female nail nail tail.
Inwardly be provided with the Mus detent projection on the described pad.
The tooth of described Mus detent projection is long to be 1mm～1.5mm, and distance is 2mm between adjacent two Mus detent projection.
The diameter of described hollow hole is 2.0～2.5mm.
Described son nail, female nail and pad are made by titanium alloy material.
The invention has the beneficial effects as follows:
Fix by this screw when the ring damage needs fixedly behind the vertical instability fracture of pelvis, at flat sacrum horizontal plane rumpbone rear side, the ilium rear wing is fixed in both sides, adopt in advance percutaneous guiding of guide pin, strengthened the accuracy in the implantation process after the fluoroscopic machine perspective, the sclerotin that the boring of minimizing test of many times causes and the damage of surrounding tissue, guide pin is implanted definite errorless tailing edge guide pin direction and is holed with core drill, and enlarge the bone road with screw tap, then along guide pin direction pedicle screw, reduced operating time and to the damage of surrounding soft tissue; The fixing stress point of this screw designs mainly concentrates on the ilium of both sides, and the hold of screw is done itself at the combination spiral shell, avoids the damage of ilium and the drawback not in place of pressurizeing; Should fixingly avoid damaging the damage of nerve of sacral plexus and PeV clump without rumpbone, reduce the amount of bleeding of operation, prevent that delayed ischemic neurological deficits and paraesthesia from appearring in the later stage; The nail tail adopts hollow interior six sides design, and the special-purpose grape of hollow orthopaedics all has at situation of all-level hospitals, the convenient use, and avoid screw tail stripped thread, for preparation work is carried out in the later stage taking-up; Employing has been strengthened the stress surface of ilium with the pad of Mus tooth, prevents from damaging ilium periosteum and screw nail tail and is absorbed in the ilium, and callus covers when avoiding the later stage to take out screw, and takes out difficulty.This screw Wicresoft theory design, the hollow guiding device shortens operating time, reduces the damage to surrounding tissue.By the titanium alloy manufacturing, titanium alloy is common used material in the present internal fixation system, and histocompatibility is good, and quality is light, and intensity is good.Different large ting models are arranged, can be for the pelvis of different sizes.Operation technique is simple, accurate positioning, and interior fixing-stable, pressurization is reliable, and the postoperative inside-fixture is not easy to come off, becomes flexible, and is convenient to the taking-up in later stage.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the side view of Fig. 1.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the hollow forcing screw of rumpbone primary and secondary of the present invention is comprised of son nail 1, female nail 4 and a pair of pad 2 that is arranged on the screw two ends, the leading portion band external screw thread of son nail 1, the leading portion band female thread of female nail 4, son nail 1 and female nail 4 threaded engagement, in use the screw plus-pressure mainly concentrates on the screw thread, avoids screw hold in the past mainly to concentrate on ilium and causes fixing unreliable and easy loosening drawback, and strengthened its hold and stability; The center of son nail 1 and female nail 4 is provided with hollow hole 3, and hollow hole 3 is through hole, can implant guide pin by percutaneous, along guide pin direction pedicle screw, implements Micro-operation, and accurately the damage to surrounding tissue is reduced in the location.
As depicted in figs. 1 and 2, the rearward end of son nail 1 is provided with hemispheric son nail nail tail 11, and the rearward end of female nail 4 is provided with hemispheric female nail nail tail 41, and the centre of son nail nail tail 11 and female nail nail tail 41 is provided with the interior six side's grooves 5 that cave inward; The top of two pads 2 is the sphere band of concave shaped sphere with the junction of son nail nail tail 11 and female nail nail tail 41, and pad 2 outside internal ring form banded depression ring, is that the hemispherical profile is to corresponding with son nail nail tail 11 and female nail nail tail 41.
Inwardly be provided with Mus detent projection 6 on the pad 2, the tooth of Mus detent projection 6 is long to be 1mm～1.5mm, and distance is 2mm between adjacent two Mus detent projection (6).Strengthened stress surface, the periosteal tissue under the less damage pad is avoided nut to be absorbed in ilium because of excessive damage and the nail tail to ilium of pressure, and is prevented that callus covers when later stage taking-up screw, and takes out difficulty.
The diameter of hollow hole 3 is 2.0～2.5mm.
Son nail 1, female nail 4 and pad 2 are made by titanium alloy material.The histocompatibility of titanium alloy is good, and quality is light, and intensity is good.Different large ting models are arranged, can be for the pelvis of different sizes.
Claims (6)
1. hollow forcing screw of rumpbone primary and secondary, it is characterized in that: formed by son nail (1), female nail (4) and a pair of pad (2) that is arranged on the screw two ends, the leading portion band external screw thread of described son nail (1), the leading portion band female thread of female nail (4), son nail (1) and female nail (4) threaded engagement, the center of described son nail (1) and female nail (4) is provided with hollow hole (3), and described hollow hole (3) is through hole.
2. the hollow forcing screw of rumpbone primary and secondary as claimed in claim 1, it is characterized in that: the rearward end of described son nail (1) is provided with hemispheric son nail nail tail (11), the rearward end of described female nail (4) is provided with hemispheric female nail nail tail (41), and the centre of son nail nail tail (11) and female nail nail tail (41) is provided with the interior six side's grooves (5) that cave inward; The top of described two pads (2) is the sphere band of concave shaped sphere with the junction of son nail nail tail (11) and female nail nail tail (41), the outside internal ring of pad (2) forms banded depression ring, is that the hemispherical profile is to corresponding with son nail nail tail (11) and female nail nail tail (41).
3. the hollow forcing screw of rumpbone primary and secondary as claimed in claim 2 is characterized in that: inwardly be provided with Mus detent projection (6) on the described pad (2).
4. the hollow forcing screw of rumpbone primary and secondary as claimed in claim 3 is characterized in that: the tooth of described Mus detent projection (6) is long to be 1mm～1.5mm, and distance is 2mm between adjacent two Mus detent projection (6).
5. the hollow forcing screw of rumpbone primary and secondary as claimed in claim 1, it is characterized in that: the diameter of described hollow hole (3) is 2.0～2.5mm.
6. such as the hollow forcing screw of the arbitrary described rumpbone primary and secondary of claim 1 to 5, it is characterized in that: described son nail (1), female nail (4) and pad (2) are made by titanium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104158551A CN102871721A (en) | 2012-10-26 | 2012-10-26 | Sacrum female and male hollow pressurizing screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104158551A CN102871721A (en) | 2012-10-26 | 2012-10-26 | Sacrum female and male hollow pressurizing screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102871721A true CN102871721A (en) | 2013-01-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104158551A Pending CN102871721A (en) | 2012-10-26 | 2012-10-26 | Sacrum female and male hollow pressurizing screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102871721A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104644256A (en) * | 2015-03-13 | 2015-05-27 | 邱正奭 | Internal fixation hollow needle for patellar fracture |
| CN113349908A (en) * | 2021-07-09 | 2021-09-07 | 中国人民解放军总医院第六医学中心 | Bidirectional pressurizing nail plate system for femoral metaphysis fracture |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201365973Y (en) * | 2009-02-18 | 2009-12-23 | 梁邦山 | Anti-rotation self-locking mother-child-type intramedullary spike |
| CN101703419A (en) * | 2009-03-16 | 2010-05-12 | 张玉岩 | Hollow guiding inward contraction pressurizing bone bolt |
| US20110082508A1 (en) * | 2009-10-02 | 2011-04-07 | Jason M. Hiatt | Apparatus and Method for Use in the Treatment of Hammertoe |
| CN202086565U (en) * | 2011-05-12 | 2011-12-28 | 上海市第十人民医院 | Slideable hollow self-tapping forcing screw |
| CN202235657U (en) * | 2011-08-11 | 2012-05-30 | 张英泽 | Screw device capable of performing effective pressurization |
| CN202437326U (en) * | 2011-12-29 | 2012-09-19 | 张兆坤 | Self-adaptive bone nail |
| CN202458653U (en) * | 2012-02-09 | 2012-10-03 | 常州迪恩医疗器械有限公司 | Medical bone screw assembly |
| CN202477833U (en) * | 2011-12-28 | 2012-10-10 | 广州莱德尔生物科技有限公司 | Degradable magnesium alloy orthopedic intramedullary tension screw spike |
| CN202843773U (en) * | 2012-10-26 | 2013-04-03 | 王永红 | Sacrum primary and secondary hollow forcing screw |
-
2012
- 2012-10-26 CN CN2012104158551A patent/CN102871721A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201365973Y (en) * | 2009-02-18 | 2009-12-23 | 梁邦山 | Anti-rotation self-locking mother-child-type intramedullary spike |
| CN101703419A (en) * | 2009-03-16 | 2010-05-12 | 张玉岩 | Hollow guiding inward contraction pressurizing bone bolt |
| US20110082508A1 (en) * | 2009-10-02 | 2011-04-07 | Jason M. Hiatt | Apparatus and Method for Use in the Treatment of Hammertoe |
| CN202086565U (en) * | 2011-05-12 | 2011-12-28 | 上海市第十人民医院 | Slideable hollow self-tapping forcing screw |
| CN202235657U (en) * | 2011-08-11 | 2012-05-30 | 张英泽 | Screw device capable of performing effective pressurization |
| CN202477833U (en) * | 2011-12-28 | 2012-10-10 | 广州莱德尔生物科技有限公司 | Degradable magnesium alloy orthopedic intramedullary tension screw spike |
| CN202437326U (en) * | 2011-12-29 | 2012-09-19 | 张兆坤 | Self-adaptive bone nail |
| CN202458653U (en) * | 2012-02-09 | 2012-10-03 | 常州迪恩医疗器械有限公司 | Medical bone screw assembly |
| CN202843773U (en) * | 2012-10-26 | 2013-04-03 | 王永红 | Sacrum primary and secondary hollow forcing screw |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104644256A (en) * | 2015-03-13 | 2015-05-27 | 邱正奭 | Internal fixation hollow needle for patellar fracture |
| CN113349908A (en) * | 2021-07-09 | 2021-09-07 | 中国人民解放军总医院第六医学中心 | Bidirectional pressurizing nail plate system for femoral metaphysis fracture |
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Application publication date: 20130116 |