CN103142302A - Bone screw - Google Patents
Bone screw Download PDFInfo
- Publication number
- CN103142302A CN103142302A CN2013100870486A CN201310087048A CN103142302A CN 103142302 A CN103142302 A CN 103142302A CN 2013100870486 A CN2013100870486 A CN 2013100870486A CN 201310087048 A CN201310087048 A CN 201310087048A CN 103142302 A CN103142302 A CN 103142302A
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- screw
- bone
- bone screw
- bar section
- head
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Abstract
The invention relates to a bone screw, which comprises a head, a rod, a screw tip, a peripheral surface and a male thread which is arranged on the peripheral surface. The rod is provided with an internal through hole which runs through the head to the screw tip and is closed at the position of the screw tip. The internal through hole is communicated with the peripheral surface through lateral holes of the rod. The holes which are arranged in a direction from the screw tip to the head are distributed on the circumference of the rod from dense to sparse. The bone screw has the advantages that since the density of the holes can be adjusted according to the needs, the actual situation of the internal part of a bone can be better met and the bone can be better fixed; and since connectors are arranged and the bone screw is connected a container for supplying bone cement through the connectors, the bone screw can be manufactured fully according to the standard, the standard bone screw can be connected through different connectors, the bone screw can adapt to different bone cement supply method and supply containers and the adaptability of the product is improved.
Description
Technical field
The present invention relates to a kind of medical instruments, particularly a kind of screw for orthopaedics.
Background technology
Existing bone screw has a head, a bar section, a screw-tipped, an outer peripheral face, an external screw thread, wherein be provided with axially extending with longitudinal axis, as to open wide to a head through hole, this boring is connected with outer peripheral face and passes outer peripheral face with the form of at least one eyelet through at least one passage perpendicular to vertical axis extension leads to the outside, through hole seals toward the screw-tipped direction, bone around bone cement can import by the through hole in this bone screw and eyelet, after solidifying, bone cement becomes the screw thread carriage of bone screw, thus bone fixation.Even although this bone screw is after the cement sclerosis, bone screw also can further screw in forward vertically, but be generally even distribution due to eyelet in the bar section section of bone screw, therefore it can not adapt to bone screw practical situation and the actual needs of sclerotin on every side, be unfavorable for that the biomechanics screw is easily broken if the eyelet of bone screw is too close, eyelet is too thin is unfavorable for that again bone cement oozes out in a large number, can not well inner bolt be fixed on bone.
Summary of the invention
Technical problem to be solved by this invention is to overcome the defects of prior art and a kind of bone screw is provided, and can be fit to sclerotin situation around bone screw and fixing better.
The present invention solves the problems of the technologies described above the technical scheme that adopts: bone screw, comprise that a head, a bar section, a screw-tipped, an outer peripheral face and are arranged in the external screw thread on outer peripheral face, bar section has a screw-tipped place to be the interior bone of sealing to screw-tipped from the head, interior bone communicates with outer peripheral face by bar section side direction eyelet, it is characterized in that: the eyelet of being arranged to cephalad direction by screw-tipped its along bar section circumference by close to dredging distribution.
Above-mentioned bone screw also arranges union joint, the through hole that always leads to joint is arranged in the middle of union joint, connect first end connecting thread is set, bone screw head arranges connecting thread, match with the connecting thread on union joint, union joint can be fixed on bone screw head by screw thread when using like this, bone cement can be injected in bone screw better by union joint, thereby can be injected in bone better.
The bar of above-mentioned screw partly becomes equal four sections, and the eyelet in the first paragraph bar section of screw tip distributes three along bar section even circumferential, and the eyelet in the second segment bar section of screw tip distributes four along bar section even circumferential.Because the first paragraph screw is thin than the second segment screw, so one week of first paragraph is 3 holes, one week of second segment is 4 holes, bone cement is oozed out from front to back increase successively, thereby make bone cement ooze out more to reinforce screw, can adapt to better the sclerotin situation like this.
Therefore the present invention can adapt to the practical situation of inside bone, better fixing bone better because the eyelet that bone screw adopts is adjusted density degree as required.
Also due to union joint being set, be connected with the container of carrying bone cement by union joint, therefore bone screw just can be fully according to standard manufacture, and the bone screw of removing connection standard with multi-form union joint, therefore bone screw can adapt to mode of movement and the transport box of different bone cements, has increased the adaptability of product.
Description of drawings
Fig. 1 is the structural representation of embodiment of the present invention bone screw.
Fig. 2 is the front elevation of embodiment of the present invention bone screw.
Fig. 3 is the A-A profile of Fig. 2.
Fig. 4 is the B-B profile of Fig. 2.
Fig. 5 is the axonometric chart of embodiment of the present invention union joint.
Fig. 6 is the structural representation of embodiment of the present invention union joint.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing embodiment.
As shown in Figure 1 and Figure 2, bone screw has a head 1, a bar section 2, a screw-tipped 4, an outer peripheral face 8, an external screw thread 6, is provided with 1 through hole 7 to screw-tipped 4 from the head in the middle of bar section 2, through hole 7 is in screw-tipped 4 places sealing, and through hole 7 passes outer peripheral face 5 by eyelet 9 and leads to the outside.
As shown in Figure 3, the eyelet 9 of bone screw is interval 120 degree along the circumferential direction, namely arrange three eyelets 9 along even circumferential.
As shown in Figure 4, the eyelet 9 of bone screw is interval 90 degree along the circumferential direction, namely arrange four eyelets 9 along even circumferential.
Above-mentioned bone screw tip 4 also is provided with tapping screw thread 12, can screw in bone better like this.
As Fig. 5, shown in Figure 6, also be provided with union joint 5, union joint 5 one ends arrange connecting thread 53, the connecting portion 51 that other end setting is connected with bone screw bar section 2 through hole 7 heads, connecting portion 51 ends also arrange the screw thread 52 that connects bone screw.
Correspondingly, above-mentioned bone screw head 1 is provided with connecting thread 11, and the head 13 of through hole 7 matches with the connecting portion 51 of union joint, sealing when both connecting.
Above-mentioned connecting portion 51 is conical, and corresponding through hole 7 heads 13 are also conical.
When needing to carry bone cement, 52 ones, the screw thread of union joint 5 is connected with the connecting thread 11 of bone screw head 1, the connecting portion 51 of union joint 5 inserts in the head 13 of through hole 7 of bone screw and seals, the connecting thread 53 of union joint 5 is connected with bone cement carrier (not shown in FIG.), the bone cement in the bone cement carrier is injected by union joint and bone screw want bone thus.
Claims (6)
1. bone screw, comprise that a head, a bar section, a screw-tipped, an outer peripheral face and are arranged in the external screw thread on outer peripheral face, bar section has a screw-tipped place to be the interior bone of sealing to screw-tipped from the head, interior bone communicates with outer peripheral face by bar section side direction eyelet, it is characterized in that: the eyelet of being arranged to cephalad direction by screw-tipped its along bar section circumference by close to dredging distribution.
2. bone screw according to claim 1, it is characterized in that: the bar of described screw partly becomes equal four sections, eyelet in the first paragraph bar section of screw tip distributes three along bar section even circumferential, and the eyelet in the second segment bar section of screw tip distributes four along bar section even circumferential.
3. bone screw according to claim 1 and 2 is characterized in that: union joint also is set, in the middle of union joint, the through hole that always leads to joint arranged, and the union joint connecting thread, bone screw head arranges connecting thread, matches with connecting thread on union joint.
4. bone screw according to claim 3, it is characterized in that: the first end of described connection arranges connecting thread, the connecting portion that other end setting is connected with bone screw bar section through hole head, the connecting portion end also arranges the screw thread that connects bone screw.
5. bone screw according to claim 4 is characterized in that: the connecting portion of described union joint is for conical, and corresponding through hole head be taper shape.
6. bone screw according to claim 1 and 2, it is characterized in that: described bone screw screw-tipped arranges tapping screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100870486A CN103142302A (en) | 2013-03-19 | 2013-03-19 | Bone screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100870486A CN103142302A (en) | 2013-03-19 | 2013-03-19 | Bone screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103142302A true CN103142302A (en) | 2013-06-12 |
Family
ID=48540841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100870486A Pending CN103142302A (en) | 2013-03-19 | 2013-03-19 | Bone screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103142302A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109745151A (en) * | 2017-11-02 | 2019-05-14 | 台湾微创医疗器材股份有限公司 | Inject the connection unit of bone filler |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10211213A (en) * | 1997-01-31 | 1998-08-11 | Mitsubishi Materials Corp | Screw for bone joint |
| CN2676849Y (en) * | 2003-08-25 | 2005-02-09 | 黄会岳 | Bone screw structure |
| US20070270858A1 (en) * | 2006-04-21 | 2007-11-22 | Sdgi Holdings, Inc. | Surgical fasteners with mechanical and osteogenic fixation means |
| CN201346237Y (en) * | 2009-01-14 | 2009-11-18 | 杨惠林 | Pourable screw for pedicle of vertebral arch |
| US20110060373A1 (en) * | 2009-09-09 | 2011-03-10 | Russell Thomas A | Bone screws and methods of use thereof |
| CN102695466A (en) * | 2009-11-09 | 2012-09-26 | 斯伯威丁股份公司 | Medical device, apparatus, and surgical method |
| CN203122578U (en) * | 2013-03-19 | 2013-08-14 | 胡晓晖 | Bone screw |
-
2013
- 2013-03-19 CN CN2013100870486A patent/CN103142302A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10211213A (en) * | 1997-01-31 | 1998-08-11 | Mitsubishi Materials Corp | Screw for bone joint |
| CN2676849Y (en) * | 2003-08-25 | 2005-02-09 | 黄会岳 | Bone screw structure |
| US20070270858A1 (en) * | 2006-04-21 | 2007-11-22 | Sdgi Holdings, Inc. | Surgical fasteners with mechanical and osteogenic fixation means |
| CN201346237Y (en) * | 2009-01-14 | 2009-11-18 | 杨惠林 | Pourable screw for pedicle of vertebral arch |
| US20110060373A1 (en) * | 2009-09-09 | 2011-03-10 | Russell Thomas A | Bone screws and methods of use thereof |
| CN102695466A (en) * | 2009-11-09 | 2012-09-26 | 斯伯威丁股份公司 | Medical device, apparatus, and surgical method |
| CN203122578U (en) * | 2013-03-19 | 2013-08-14 | 胡晓晖 | Bone screw |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109745151A (en) * | 2017-11-02 | 2019-05-14 | 台湾微创医疗器材股份有限公司 | Inject the connection unit of bone filler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130612 |
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| RJ01 | Rejection of invention patent application after publication |