CN204072300U - A kind of bone screw - Google Patents
A kind of bone screw Download PDFInfo
- Publication number
- CN204072300U CN204072300U CN201420441076.3U CN201420441076U CN204072300U CN 204072300 U CN204072300 U CN 204072300U CN 201420441076 U CN201420441076 U CN 201420441076U CN 204072300 U CN204072300 U CN 204072300U
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- thread
- cephalic par
- bone screw
- screw
- deep
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Abstract
This utility model relates to a kind of bone screw, belongs to surgical medical equipment technical field.This bone screw comprises screw rod and screw thread, described screw rod one end is the cephalic par that can carry out screwing in for sheathed instrument operation, the other one end of described screw rod is point, described cephalic par is circular configuration, interior hexagonal groove is had at cephalic par, the side of described cephalic par is provided with through hole, and described through hole communicates with interior hexagonal groove; Described point is pyramidal structure, and described point is also provided with self tapping groove.This utility model structure is simple, and cephalic par side through hole provides firm fulcrum for suture fixation muscles tendinous tissue, and its beneficial effect is: the tendon tissue repairing damage, pins down and supports unstable fracture block, is conducive to the healing of fracturing.
Description
Technical field
This utility model relates to a kind of bone screw, belongs to surgical medical equipment technical field.
Background technology
The fixed form that treatment extremity fracture is conventional has extenal fixation formula and internally-fixed two kinds.It is fixing etc. that extenal fixation mode comprises plintlet, plaster bandage, exterior fixation bracket, traction braking, and methods of internal fixation then comprises by surgical incision muscular tissue, assigns steel plate, draw point, bone screw etc.
Proximal humeral fracture be clinical in one of common fracture, because its type is complicated, heal poor, become the difficult point in orthopaedic trauma treatment.At present, treatment proximal humeral fracture multirow internal fixation with steel plate, Interal fixation is placed on bone surface, and it is in tension band position, and especially when the medial support of skeleton is destroyed, steel plate occurs that the risk of fracture is larger.To have wound little due to it for intramedullary pin, the advantages such as stress dispersion are more and more subject to the favor of orthopedist, but due to the complexity of clinical middle proximal humeral fracture, the distribution of fracture line is unpredictable, intramedullary nail system does not have Universal screw nail function under current engineering level simultaneously, makes intramedullary pin be limited in the application of proximal humerus to a certain extent.
The bone screw used in current bone surgery comprises rivet nut and nail emits, and the outer surface of rivet nut is provided with elongated screw thread, and this bone screw is when implanting bone, and cortical layer and the cancellous bone layer of its screw thread and bone lock mutually, and bone screw not easily loosens in inside bone.But when the bone screw distance fracture line implanted is closely or just in fracture line region, sclerite easily loosens, and the effect of fixing sclerite reduces, and is unfavorable for the growth of bone, affects final healing effect.
Utility model content
The purpose of this utility model is: overcome the defect that prior art exists, propose a kind of bone screw, and this bone screw structure is simple, and cephalic par side through hole provides firm fulcrum for suture fixation muscles tendinous tissue.
The purpose of this utility model is realized by following technical proposals:
A kind of bone screw, comprise screw rod and screw thread, described screw rod one end is the cephalic par that can carry out screwing in for sheathed instrument operation, the other one end of described screw rod is point, described cephalic par is circular configuration, have interior hexagonal groove at cephalic par, the side of described cephalic par is provided with through hole, and described through hole communicates with interior hexagonal groove; Described point is pyramidal structure, and described point is also provided with self tapping groove.
As preferably, described screw thread comprises interconnective shallow thread and deep thread, and described shallow thread is near cephalic par, and described deep thread is near point, and shallow thread is identical with the external diameter of deep thread, and the internal diameter of shallow thread is greater than the internal diameter of deep thread.
As preferably, be also provided with transition screw thread between shallow thread and deep thread, the internal diameter of described transition screw thread, between the internal diameter and the internal diameter of described deep thread of described shallow thread, successively decreases along described shallow thread to the direction of deep thread.
Preferred further, described through hole has more than 2.
Preferred further, the groove face of described self tapping groove is cambered surface.
Preferred further, described bone screw is made up of titanium alloy.
The beneficial effects of the utility model: a kind of bone screw of this utility model, the side of the cephalic par of this bone screw is provided with through hole, for suture fixation muscles tendinous tissue provides firm fulcrum, and the reliable tendon tissue repairing damage, pin down and support unstable fracture block, be conducive to the healing of fracturing; The point of this bone screw is also provided with self tapping groove, and self tapping groove has self tapping function can accelerate to implant into nail speed; Deep thread is used for spongy bone section, has better hold, and facing caudal is shallow thread structure, and it is for being fixed on cortical bone section; Transition screw thread is provided with between shallow thread and deep thread, make this utility model utilize like this reducing that the screw body section of this resolute screw thread position is shallow thread and deep thread provides and cushions and transition, thus make the process operation of this bone screw convenient on the one hand, there is the risk of fracture in the junction that can reduce on the one hand in operation process between shallow thread and deep thread in addition, this is because direct reducing easily ruptures in junction between shallow thread and deep thread.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining this utility model, is not formed improper restriction of the present utility model.
Fig. 1 is the structural representation of this utility model bone screw;
Fig. 2 is the top view of cephalic par;
Fig. 3 is point K direction view;
Fig. 4 is I partial sectional view in Fig. 1;
Labelling in figure: 1-cephalic par, 2-through hole, 3-shallow thread, 4-deep thread, 5-point, 6-self tapping groove, 7-transition screw thread, hexagonal groove in 8-.
Detailed description of the invention
it should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe this utility model in detail in conjunction with the embodiments.
As shown in Figures 1 to 4, a kind of bone screw, comprise screw rod and screw thread, screw rod one end is the cephalic par 1 that can carry out screwing in for sheathed instrument operation, the other one end of screw rod is point 5, and described cephalic par 5 is circular configuration, has interior hexagonal groove 8 at cephalic par 5, the side of cephalic par 1 is provided with 1 through hole 2, and described through hole 2 communicates with interior hexagonal groove 8; Described point 5 is pyramidal structure, and described point 5 is also provided with self tapping groove 7, and the groove face of self tapping groove 7 is cambered surface.Screw thread comprises interconnective shallow thread 3 and deep thread 4, and described shallow thread 3 is near cephalic par 1, and described deep thread 4 is near point 5, and shallow thread 3 is identical with the external diameter of deep thread 4, and the internal diameter of shallow thread 3 is greater than the internal diameter of deep thread 4; Also be provided with transition screw thread 7 between shallow thread 3 and deep thread 4, the internal diameter of described transition screw thread 7 is between the internal diameter and the internal diameter of described deep thread 4 of described shallow thread 3, successively decreases in the direction along described shallow thread 3 to deep thread 4.
Bone screw is made up of titanium alloy.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a bone screw, comprises screw rod and screw thread, and described screw rod one end is the cephalic par (1) that can carry out screwing in for sheathed instrument operation, and the other one end of described screw rod is point (5), it is characterized in that:
Described cephalic par (1) is circular configuration, has interior hexagonal groove (8) at cephalic par (1), and the side of described cephalic par (1) is provided with through hole (2), and described through hole (2) communicates with interior hexagonal groove (8);
Described point (5) is pyramidal structure, and described point (5) is also provided with self tapping groove (6).
2. bone screw according to claim 1, it is characterized in that: described screw thread comprises interconnective shallow thread (3) and deep thread (4), described shallow thread (3) is near cephalic par (1), described deep thread (4) is near point (5), shallow thread (3) is identical with the external diameter of deep thread (4), and the internal diameter of shallow thread (3) is greater than the internal diameter of deep thread (4).
3. bone screw according to claim 2, it is characterized in that: between described shallow thread (3) and deep thread (4), be also provided with transition screw thread (7), the internal diameter of described transition screw thread (7) is between the internal diameter and the internal diameter of described deep thread (4) of described shallow thread (3), successively decreases in the direction along described shallow thread (3) to deep thread (4).
4. bone screw according to claim 1, is characterized in that: described through hole (2) has more than 2.
5. bone screw according to claim 1, is characterized in that: the groove face of described self tapping groove (6) is cambered surface.
6. the bone screw according to any one of claim 1 to 5, is characterized in that: described bone screw is made up of titanium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420441076.3U CN204072300U (en) | 2014-08-07 | 2014-08-07 | A kind of bone screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420441076.3U CN204072300U (en) | 2014-08-07 | 2014-08-07 | A kind of bone screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204072300U true CN204072300U (en) | 2015-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420441076.3U Active CN204072300U (en) | 2014-08-07 | 2014-08-07 | A kind of bone screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204072300U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104958102A (en) * | 2015-06-11 | 2015-10-07 | 苏州瑞华医院有限公司 | Hollow forcing screw with tail hole |
| CN105852951A (en) * | 2016-05-04 | 2016-08-17 | 高嘉锴 | Hollow screw for restoring damaged ligaments or muscle tendons |
| CN108433797A (en) * | 2018-03-30 | 2018-08-24 | 江苏艾迪尔医疗科技股份有限公司 | Humerus anatomical form intramedullary nail |
-
2014
- 2014-08-07 CN CN201420441076.3U patent/CN204072300U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104958102A (en) * | 2015-06-11 | 2015-10-07 | 苏州瑞华医院有限公司 | Hollow forcing screw with tail hole |
| CN105852951A (en) * | 2016-05-04 | 2016-08-17 | 高嘉锴 | Hollow screw for restoring damaged ligaments or muscle tendons |
| CN108433797A (en) * | 2018-03-30 | 2018-08-24 | 江苏艾迪尔医疗科技股份有限公司 | Humerus anatomical form intramedullary nail |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |