CN203122578U - Bone screw - Google Patents
Bone screw Download PDFInfo
- Publication number
- CN203122578U CN203122578U CN 201320124247 CN201320124247U CN203122578U CN 203122578 U CN203122578 U CN 203122578U CN 201320124247 CN201320124247 CN 201320124247 CN 201320124247 U CN201320124247 U CN 201320124247U CN 203122578 U CN203122578 U CN 203122578U
- Authority
- CN
- China
- Prior art keywords
- screw
- bone
- bone screw
- bar portion
- union joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
A bone screw comprises a head portion, a rod portion, a screw tip, an outer peripheral face and outer thread on the outer peripheral face, wherein an inner through hole with an enclosed end at the screw tip portion is arranged in the rod portion from the head portion to the screw tip, the inner through hole communicates with the outer peripheral face through side holes of the rod portion, and the holes distributed on the periphery of the rod portion becomes gradually dense from the screw tip to the head portion. The density of the holes of the bone screw can be adjusted according to needs, thereby allowing better fitting the actual inner situation of a bone and better fixing the bone. With a joint, the bone screw is connected with a container for conveying bone cement. In this way, bone screws can be manufacture according to standard, and the standard bone screws can be connected with different joints to meet the requirement of different conveying means and conveying containers of bone cement. The adaptability of the product is thus improved.
Description
Technical field
This utility model relates to a kind of medical instruments, particularly a kind of screw for orthopaedics.
Background technology
Existing bone screw has a head, a bar portion, a screw-tipped, an outer peripheral face, an external screw thread, wherein be provided with a through hole axially extending with longitudinal axis, that open wide to head, 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 though this bone screw is after the cement sclerosis, bone screw also can further screw in forward vertically, but because eyelet is generally even distribution in the bar portion 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 to be unfavorable for that again bone cement oozes out in a large number, can not well inner bolt be fixed on the bone.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the above-mentioned defective of prior art and a kind of bone screw is provided, and can be fit to sclerotin situation around the bone screw and fixing better.
This utility model solves the problems of the technologies described above the technical scheme that adopts: bone screw, comprise that a head, a bar portion, a screw-tipped, an outer peripheral face and are arranged in the external screw thread on the outer peripheral face, it is the interior bone of sealing that there is a screw-tipped place in bar portion to screw-tipped from the head, interior bone communicates with outer peripheral face by bar portion side direction eyelet, it is characterized in that: the eyelet of being arranged to cephalad direction by screw-tipped its along bar portion 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 the union joint, connect first end connecting thread is set, bone screw head arranges connecting thread, match with the connecting thread on the union joint, union joint can be fixed on the bone screw head by screw thread when using like this, bone cement can be injected in the bone screw better by union joint, thereby can be injected in the bone better.
The bar of above-mentioned screw partly becomes equal four sections, and the eyelet in first section bar portion of screw tip evenly distributes three along bar portion circumference, and the eyelet in second section bar portion of screw tip evenly distributes four along bar portion circumference.Because first section screw is thin than second section screw, so first period one week is 3 holes, second period one week is 4 holes, bone cement oozed out from front to back increase successively, thereby make bone cement ooze out to reinforce screw more, can adapt to the sclerotin situation better like this.
Therefore this utility model can adapt to the practical situation of inside bone, better fixing bone better owing to the eyelet that bone screw adopts is adjusted density degree as required.
Also because union joint is set, link to each other with the container of carrying bone cement by union joint, therefore bone screw just can be fully according to standard manufacture, and go to connect the bone screw of 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 this utility model embodiment bone screw.
Fig. 2 is the front elevation of this utility model embodiment bone screw.
Fig. 3 is A-A profile of Fig. 2.
Fig. 4 is B-B profile of Fig. 2.
Fig. 5 is the axonometric chart of this utility model embodiment union joint.
Fig. 6 is the structural representation of this utility model embodiment union joint.
The specific embodiment
Be further described below in conjunction with this utility model of accompanying drawing embodiment.
As shown in Figure 1 and Figure 2, bone screw has a head 1, a bar portion 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 the bar portion 2, through hole 7 is in the sealing of screw-tipped 4 places, 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, just evenly arrange three eyelets 9 along circumference.
As shown in Figure 4, the eyelet 9 of bone screw is interval 90 degree along the circumferential direction, just evenly arrange four eyelets 9 along circumference.
Above-mentioned bone screw tip 4 also is provided with tapping screw thread 12, can screw in the 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, and the connecting portion 51 that other end setting is connected with bone screw bar portion 2 through holes, 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 the two connects.
Above-mentioned connecting portion 51 is conical, and corresponding through hole 7 heads 13 also are conical.
When needing to carry bone cement, 52 ones on 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 drawing among the figure), 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 portion, a screw-tipped, an outer peripheral face and are arranged in the external screw thread on the outer peripheral face, it is the interior bone of sealing that there is a screw-tipped place in bar portion to screw-tipped from the head, interior bone communicates with outer peripheral face by bar portion side direction eyelet, it is characterized in that: the eyelet of being arranged to cephalad direction by screw-tipped its along bar portion 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 first section bar portion of screw tip evenly distributes three along bar portion circumference, and the eyelet in second section bar portion of screw tip evenly distributes four along bar portion circumference.
3. bone screw according to claim 1 and 2 is characterized in that: union joint also is set, in the middle of the union joint 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 the 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 portion 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 |
|---|---|---|---|
| CN 201320124247 CN203122578U (en) | 2013-03-19 | 2013-03-19 | Bone screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320124247 CN203122578U (en) | 2013-03-19 | 2013-03-19 | Bone screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203122578U true CN203122578U (en) | 2013-08-14 |
Family
ID=48930615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320124247 Expired - Fee Related CN203122578U (en) | 2013-03-19 | 2013-03-19 | Bone screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203122578U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103142302A (en) * | 2013-03-19 | 2013-06-12 | 胡晓晖 | Bone screw |
| CN106999217A (en) * | 2014-11-04 | 2017-08-01 | 海普瑞万迅公司 | Implant for consolidating knochenbruch or non-knochenbruch |
| CN111282025A (en) * | 2020-05-08 | 2020-06-16 | 东南大学苏州医疗器械研究院 | Magnesium alloy bone nail and preparation method and application thereof |
-
2013
- 2013-03-19 CN CN 201320124247 patent/CN203122578U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103142302A (en) * | 2013-03-19 | 2013-06-12 | 胡晓晖 | Bone screw |
| CN106999217A (en) * | 2014-11-04 | 2017-08-01 | 海普瑞万迅公司 | Implant for consolidating knochenbruch or non-knochenbruch |
| CN111282025A (en) * | 2020-05-08 | 2020-06-16 | 东南大学苏州医疗器械研究院 | Magnesium alloy bone nail and preparation method and application thereof |
| CN111282025B (en) * | 2020-05-08 | 2020-08-04 | 东南大学苏州医疗器械研究院 | Magnesium alloy bone nail and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203122578U (en) | Bone screw | |
| CN103142302A (en) | Bone screw | |
| CN201998407U (en) | Two-layer extruder head | |
| CN204076769U (en) | Rubber tube processing die sleeve | |
| CN204310603U (en) | A kind of wire reel | |
| CN204818903U (en) | Novel connection structure of motor and lead screw in digit control machine tool | |
| CN204140572U (en) | For the three-dimensional joint that agricultural greenhouse booth is built | |
| CN208084899U (en) | A kind of screw in injection molding machine | |
| PL416662A1 (en) | 3D printer head | |
| CN204946618U (en) | A kind of cable insulation melt back of the body unloads two crowded machine | |
| CN205173622U (en) | Take valve of valve gap auto -lock structure | |
| CN203817651U (en) | Rosin injection pen used for solder wire extruding machine | |
| CN207353579U (en) | The external head protection head of feeder line | |
| CN103909641A (en) | Solid wall tube, and tube preparation mould | |
| CN205242854U (en) | Steel strand connector | |
| CN202965151U (en) | Combined-type assembling extrusion die head | |
| CN202194582U (en) | Sleeve for being connected with drill | |
| CN204765987U (en) | Novel plant implant planting body | |
| CN203483498U (en) | Nut changing sleeve for changing specifications of locking screws in use | |
| CN203564350U (en) | Dental implant with porous bracket type structure | |
| CN206055006U (en) | A kind of gas circuit connecting device | |
| CN204765884U (en) | Take side opening can absorb screw | |
| CN203818535U (en) | Solid-wall pipe and pipe manufacturing die | |
| CN205380824U (en) | Inlay annular metallic piece of beating usefulness of moulding plastics | |
| CN212838802U (en) | Connecting piece for wardrobe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20190319 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |