CN205031361U - Bone screw spanner with effect of controlling - Google Patents
Bone screw spanner with effect of controlling Download PDFInfo
- Publication number
- CN205031361U CN205031361U CN201520780108.7U CN201520780108U CN205031361U CN 205031361 U CN205031361 U CN 205031361U CN 201520780108 U CN201520780108 U CN 201520780108U CN 205031361 U CN205031361 U CN 205031361U
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- bone screw
- hexagonal
- wrench end
- driving end
- controlling
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Abstract
The utility model provides a bone screw spanner with effect of controlling, belongs to orthopedic medical equipment operation instrument technical field. Including wrench end (3), wrenching bar (4) and fast connect (5), its characterized in that, wrench end (3) be the tapering structure in the axial, its cone angle alpha is 5~20 degrees. The utility model discloses it can be in the operation wrench end cooperate with plum blossom hexagonal or hexagonal counter bore on the bone screw, be the tapering structure in the axial because of the wrench end, so can block plum blossom hexagonal or hexagonal counter bore on the bone screw, as long as bone screw pulls and applys certain pressure with bone screw in the axial, plum blossom hexagonal or hexagonal counter bore on wrench end and the bone screw will produce interference fit, thereby can reach the effect of controlling to bone screw, last bone screw's when consequently it can reduce to perform the operation the degree of difficulty, the risk that operation technique brought has been reduced.
Description
Technical field
This utility model belongs to orthopedic medical device operation tool technical field, is specifically related to a kind of bone screw spanner with holding effect.
Background technology
Need to use a large amount of bone screws in bone surgery, bone screw after coordinating with the hexagonal on head of screw or Flos Mume hexagonal, screw is screwed into skeleton by leader's art spanner.Under normal circumstances, doctor needs, with hand steered screw, then to be screwed in by screw.But during operation, normal conditions downward view is little, fracture otch is little, and doctor has very large difficulty by the upper nail mode of hand steered screw, and screw is screwed into direction cannot accurately locate, find angular deflection after being easy to cause upper nail, implantation position is incorrect, thus needs again upper nail.In addition, all include the important soft tissue such as nerve, blood vessel during operation near fracture site, the inaccurate meeting of upper nail causes a lot of risk.Though people it is also proposed notification number: CN203169293U " a kind of lock screw spanner " technical scheme, it is only applicable to knockout screw.
Summary of the invention
The purpose of this utility model is to overcome follows closely mode Problems existing traditionally, for providing a kind of bone screw spanner with holding effect in clinical operation, it can grip tightly bone screw in operation, during upper nail, can complete upper nail process without the need to any auxiliary movement; And structure is simple, cost is low.
Foregoing invention object is achieved through the following technical solutions: a kind of bone screw spanner with holding effect, and comprise driving end, wrenching bar and fast joint, its main points are, driving end is being axially tapered configuration.
As preferably, described driving end is axially in tapered configuration, and its cone angle is 5 ~ 20 degree.
As preferably, described tapering driving end shape is Flos Mume hexagonal or hexagonal.
As preferably, described fast joint is provided with rotary actuation plane and slip-off preventing arc groove.
The beneficial effects of the utility model: it can match with the Flos Mume hexagonal on bone screw or hexagonal counterbore by driving end in operation, because driving end is being axially tapered configuration, so the Flos Mume hexagonal can blocked on bone screw or hexagonal counterbore, as long as bone screw spanner and bone screw are axially applying certain pressure, Flos Mume hexagonal on driving end and bone screw or hexagonal counterbore will produce interference fit, thus can reach bone screw holding effect, therefore it can reduce the difficulty of upper bone screw when performing the operation, and decreases the risk that operation technique brings.And described fast joint is provided with rotary actuation plane and slip-off preventing arc groove, rotary actuation plane is when after spanner loads fast connecting handle, people pull fast connecting handle can make wrenching bar rotate, and slip-off preventing arc groove coordinates with the steel ball in fast connecting handle, prevents spanner from coming off during use; Meanwhile, by fast joint, bone screw spanner also can be contained on electric drill and use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
Fig. 2 is the sectional view of Figure 1B-B
Fig. 3 is the sectional view of Fig. 2 A-A
Fig. 4 is the structural representation axonometric chart of fast joint
Fig. 5 is the structural representation sectional view of bone screw
Left view when Fig. 6 is not cuing open of Fig. 5
Sectional view when Fig. 7 is this utility model use
In Fig. 1-7,1-bone screw, 2 Flos Mume hexagonal counterbores, 3-driving end, 4-wrenching bar, 5-fast joint, 6-rotary actuation plane, 7-slip-off preventing arc groove.
Detailed description of the invention
Embodiment below just represented by Fig. 1-7 is further described this utility model: comprise driving end 3, wrenching bar 4 and fast joint 5, and described driving end 3 is being axially tapered configuration, and its cone angle is 10 degree; Described driving end 3 shape is Flos Mume hexagonal; Described fast joint 5 is provided with rotary actuation plane 6 and slip-off preventing arc groove 7.
The use operation of the present embodiment is as follows: during operation, first bone screw spanner is connected with fast connecting handle by fast joint 5, then driving end 3 is inserted the Flos Mume hexagonal counterbore 2 on bone screw 1, as long as now axially apply certain pressure at fast connecting handle, Flos Mume hexagonal counterbore 2 will produce certain interference fit with the tapering place of driving end 3, thus bone screw 1 is gripped tightly by bone screw spanner, make can not drop to bone screw 1 in its natural state.Simple, convenient, the speed that greatly improves the upper bone screw of operation above.
Claims (4)
1. with a bone screw spanner for holding effect, comprise driving end (3), wrenching bar (4) and fast joint (5), it is characterized in that, described driving end (3) is being axially tapered configuration.
2. bone screw spanner according to claim 1, is characterized in that, described driving end (3) is being axially tapered configuration, and its cone angle is 5 ~ 20 degree.
3. bone screw spanner according to claim 1 and 2, is characterized in that, described driving end (3) shape is Flos Mume hexagonal or hexagon.
4. bone screw spanner according to claim 1 and 2, is characterized in that, described fast joint (5) is provided with rotary actuation plane (6) and slip-off preventing arc groove (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520780108.7U CN205031361U (en) | 2015-10-10 | 2015-10-10 | Bone screw spanner with effect of controlling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520780108.7U CN205031361U (en) | 2015-10-10 | 2015-10-10 | Bone screw spanner with effect of controlling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205031361U true CN205031361U (en) | 2016-02-17 |
Family
ID=55290300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520780108.7U Active CN205031361U (en) | 2015-10-10 | 2015-10-10 | Bone screw spanner with effect of controlling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205031361U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112842639A (en) * | 2021-01-29 | 2021-05-28 | 北京市春立正达医疗器械股份有限公司 | Universal double offset ring spanner |
-
2015
- 2015-10-10 CN CN201520780108.7U patent/CN205031361U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112842639A (en) * | 2021-01-29 | 2021-05-28 | 北京市春立正达医疗器械股份有限公司 | Universal double offset ring spanner |
| CN112842639B (en) * | 2021-01-29 | 2023-09-01 | 北京市春立正达医疗器械股份有限公司 | Universal double offset ring spanner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |