CN102068300B - Traction bow for treating fracture - Google Patents
Traction bow for treating fracture Download PDFInfo
- Publication number
- CN102068300B CN102068300B CN201010615429A CN201010615429A CN102068300B CN 102068300 B CN102068300 B CN 102068300B CN 201010615429 A CN201010615429 A CN 201010615429A CN 201010615429 A CN201010615429 A CN 201010615429A CN 102068300 B CN102068300 B CN 102068300B
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- Prior art keywords
- arm
- bow
- catching groove
- traction
- distortion
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Abstract
The invention provides a traction bow for treating fracture, which comprises a pair of bow arms, wherein the pair of bow arms is symmetrically arranged along a traction hinge; the tail end of each bow arm is provided with a connection part which is connected with a bone nail; the connection part comprises a buckle body which is formed by reversely bending from the tail end of the bow arm; a wide-mouth catching groove is formed between the buckle body and the bow arm; a locking device capable of closing the opening of the catching groove is arranged on the catching groove near the opening; a connecting trough axially arranged along the bone nail is formed on the bottom of the catching groove, and matched with the surface of the bone nail when the opening of the catching groove is closed. In the invention, the catching groove clamps the bone nail into the connecting trough, and locks the locking device so as to realize the fixed connection of the traction bow with the bone nail. Because the folded bow arm does not need to be unfolded, the connection is convenient. As the connecting trough is always axially arranged along the bone nail, after the connection trough is locked, the inner wall of the connecting trough is matched with the surface of the bone nail so as to form surface contact, the contact area is large, the provided static frictional force is great, the probability of relative sliding between the traction bow and the bone nail is low, the connection is firm, and the use is reliable.
Description
Technical field
The present invention relates to the orthopedic medical device technical field, particularly a kind of fractures traction bow.
Background technology
When fracture took place, the fracture site dislocation usually took place, need be during treatment with traction apparatus with the skeleton traction progressively of dislocation to its normal physiological location.
Traction apparatus commonly used generally comprises a traction bow and and wears nail; In the distraction procedure; With wear nail be horizontally through the fracture far-end advance to follow closely osseous tissue after, with traction bow with wear nail and be connected, through bending the arm reinforcing; Make that the broken bone broken ends of fractured bone is involutory to be resetted, wait to heal or internal fixation operation after take off traction apparatus again.
Existing traction apparatus, the terminal operated by rotary motion of its traction bow has lasso, executes in the art process; All be that traction bow is extended outward, and the nail two ends of wearing that will pass limbs are inserted in said lasso, treat traction bow bow arm close up reset after; Lasso is anchored on wears the nail periphery, thereby make traction apparatus affixed; After accomplish connecting, can apply pulling force, wear limbs that nail drives the fracture far-end and move and make that the skeleton broken ends of fractured bone is involutory to be resetted thereby make to traction bow.The traction bow of this socket mode; In executing the art process, need firmly to launch the bow arm, execute art to the doctor and make troubles, and launching and closing up in the process of bending arm by the doctor; The distortion disturbance of bow arm is passed to the patient through wearing nail; Increase the patient suffering, even worn the muscle tear of nail puncture position, enlarged puncture wound.
Simultaneously; Because the pull strength of traction bow is passed to through two lassos and wears nail in the distraction procedure; Wear nail deflection deformation take place unavoidably, thus make pull strength form after the deflection deformation wear screw axes to component, this component will order about lasso and slide along wearing nail; Deviate to wear nail for avoiding lasso to slide, need lasso be anchored on and wear the nail surface.Yet; Launching and closing up in the process of traction bow; The running orbit of lasso is not a straight path, but is the arching trajectory in the center of circle with the traction hinge, slides into link position for making the lasso that closes up along the operation of said arching trajectory wear the nail surface at linear; The internal diameter of lasso needs greater than wearing the nail diameter, this give lasso with wear nail fixedly bring difficulty; Existing way generally is radially to be provided with trip bolt at lasso, is tight against through said trip bolt end and wears nail surface and fix.Yet the trip bolt end is the some contact with wearing contacting of nail surface, and its contact area is little; Contact stiction is little; Thereby make traction bow undesirable, applying pull strength repeatedly, wear nail and take place repeatedly in the fracture traction process of deflection deformation with the fastening effect of wearing nail; Easy generation lasso becomes flexible and along the accident of wearing the slip of nail surface, influences the traction therapeutic effect.
Summary of the invention
The objective of the invention is to the deficiency of prior art and provide a kind of, connect firm fractures traction bow with to wear nail easy to connect.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
The fractures traction bow; It comprises along the symmetrically arranged a pair of bow arm of traction hinge; Each bow arm end is provided with and wears the connecting portion that nail is connected; Said connecting portion comprises the buckling body that oppositely is bent to form from said bow arm end, is formed with the catching groove of wide-mouth between said buckling body and the bow arm, and said catching groove is provided with the locking device that makes said catching groove opening closed near opening part; Said catching groove bottom land is formed with along the said screw axes of wearing to the link slot that is provided with, said link slot when said catching groove opening is closed and the said nail surface of wearing be complementary.
The present invention includes following further technical scheme:
Said catching groove is concaved with guiding groove at said link slot bottom land.
Wherein, said locking device comprises the through hole that runs through said buckling body and bow arm, and the clamping screw assembly that is arranged in said through hole.
Further, said bow arm convexes with boss in said through hole, and said boss is provided with from bending the back side of arm with respect to said catching groove.
According to above-described, said bow arm comprises that oneself draws the distortion arm that hinge extends, and the linking arm that connects said distortion arm and connecting portion, and said distortion arm becomes the angle setting with pulling force application of force direction, and said linking arm is provided with along said pulling force direction; Said linking arm is at the width of the said catching groove of the correspondence position width greater than distortion arm remainder.
Preferably, said distortion arm thickness is not less than the twice of said linking arm thickness.
Wherein, the folding corner of said distortion arm and linking arm is provided with the arc transition chamfering.
Wherein, the junction of said distortion arm and linking arm is provided with circular arc chamfering.
Wherein, hollow out has the distortion cavity in the middle of the said distortion arm.
Further, be provided with ribs in the said distortion cavity.
Beneficial effect of the present invention is: fractures traction bow of the present invention comprises along the symmetrically arranged a pair of bow arm of traction hinge; Each bow arm end is provided with and wears the connecting portion that nail is connected; Said connecting portion comprises the buckling body that oppositely is bent to form from said bow arm end; Be formed with the catching groove of wide-mouth between said buckling body and the bow arm; Said catching groove is provided with the locking device that makes said catching groove opening closed near opening part, and said catching groove bottom land is formed with along the said screw axes of wearing to the link slot that is provided with, said link slot when said catching groove opening is closed and the said nail surface of wearing be complementary; The present invention will wear nail through said catching groove and snap in said link slot, and lock said locking device and realize traction bow and wear being fixedly connected of nail, owing to need not launch to close up said bow arm, and easy to connect; And since connection procedure in, link slot all the time along the said screw axes of wearing to setting, after the locking; Formation face contacts the link slot inwall with wearing the nail surface engagement, and contact area is big, and the stiction that provides is big; That relative slip probability takes place is little with wearing nail for traction bow, connects firmly, uses reliable.
Description of drawings
Utilize accompanying drawing that the present invention is described further, but the embodiment in the accompanying drawing does not constitute any restriction of the present invention.
Accompanying drawing 1 is the structural representation of fractures traction bow of the present invention.
Accompanying drawing 2 is Facad structure sketch maps of fractures traction bow of the present invention.
Accompanying drawing 3 is side structure sketch maps of fractures traction bow of the present invention.
Comprise among Fig. 1, Fig. 2 and Fig. 3:
1---the bow arm; 11---the traction hinge; 12---the distortion arm; 121---the distortion cavity; 13---linking arm; 2---buckling body; 3---catching groove;
31---link slot; 32---guiding groove; 33---through hole; 34---boss;
4---the arc transition chamfering; 5---circular arc chamfering.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described.
The fractures traction bow; It comprises along traction hinge 11 symmetrically arranged a pair of bow arms 1; Each bow arm 1 end is provided with and wears the connecting portion that nail is connected; Said connecting portion comprises the buckling body 2 that oppositely is bent to form from said bow arm 1 end, is formed with the catching groove 3 of wide-mouth between said buckling body 2 and the bow arm 1, and said catching groove 3 is provided with the locking device that makes said catching groove 3 openings closed near opening part; Said catching groove 3 bottom lands are formed with along the said screw axes of wearing to the link slot 31 that is provided with, said link slot 31 when said catching groove 3 openings are closed and the said nail surface of wearing be complementary.
The present invention is when carrying out fracture traction; That will wear earlier that nail is horizontally through the fracture far-end advances to follow closely osseous tissue; To wear the two ends periphery that the nail card exposes to limbs through said catching groove 3 again and go into said link slot 31, and lock said locking device and realize traction bow and wear being fixedly connected of nail.Since need not launch to close up said bow arm 1, easy to connect; And since connection procedure in, link slot 31 all the time along the said screw axes of wearing to setting, after the locking; Formation face contacts link slot 31 inwalls with wearing the nail surface engagement, and contact area is big, and the stiction that provides is big; That relative slip probability takes place is little with wearing nail for traction bow, connects firmly, uses reliable.
See Fig. 1, shown in Figure 3, catching groove 3 according to the invention is concaved with guiding groove 32 at said link slot 31 bottom lands.This guiding groove 32 is strip, and it makes the distortion closure of said catching groove 3 more smooth.
See Fig. 1, shown in Figure 2, said locking device comprises the through hole 33 that runs through said buckling body 2 and bow arm 1, and the clamping screw assembly that is arranged in said through hole 33.Its locking process is tightened locking nut for clamping screw is passed said through hole 33 at the other end, lock onto in the said link slot 31 thereby make said buckling body 2 free ends will wear nail with 1 applying of bow arm.The described locking device of present embodiment is because the self-locking action after the tightening of clamping screw assembly, and locking effect is good, and is easy to release.
See Fig. 1, shown in Figure 3, said bow arm 1 convexes with boss 34 at said through hole 33 places, and said boss 34 is provided with from bending the back side of arm 1 with respect to said catching groove 3.Said boss 34 axially is provided with along said clamping screw, has strengthened the structural strength of said bow arm 1 in said through hole 33 positions.
See shown in Figure 1; Said bow arm 1 comprises from drawing the distortion arm 12 that hinge 11 extends; And the linking arm 13 that connects said distortion arm 12 and connecting portion, said distortion arm 12 becomes the angle setting with pulling force application of force direction, and said linking arm 13 is provided with along said pulling force direction; Said linking arm 13 is at the width of the said catching groove of the correspondence 3 positions width greater than distortion arm 12 remainders.The width of said catching groove 3 positions is wide, and the cell body length of then said link slot 31 is long, and contact area is big when wearing nail and be connected, and stiction is big, has strengthened the connection steadiness.
See Fig. 1, shown in Figure 3, said distortion arm 12 thickness are not less than the twice of said linking arm 13 thickness.When applying pull strength, apply through said traction hinge 11 positions, said distortion arm 12 is passed to linking arm 13 away from an end of said traction hinge 11 with pull strength, moves thereby wear nail through said connecting portion drive.In the distraction procedure, distortion arm 12 bears moment, will produce flexural deformation, for strengthening its bending strength, avoids fractureing, so it is thicker that its thickness is set, wherein, thickness described here is meant the physical dimension perpendicular to the planar direction of said linking arm 13 distributions.And said linking arm 13 receive force direction consistent with its length direction, mainly bear pulling force in the distraction procedure, as long as Tensile strength enough, so its thickness can be thinner, be beneficial to save material.
See shown in Figure 2ly, said distortion arm 12 is provided with arc transition chamfering 4 with the folding corner of linking arm 13.
See shown in Figure 3ly, said distortion arm 12 is provided with circular arc chamfering 5 with the junction of linking arm 13.
Described arc transition chamfering 4 has all been eliminated sharp-pointed bent angle with circular arc chamfering 5, avoids stress concentration, prevents that bow arm 1 ruptures at the joint of said linking arm 13 with distortion arm 12 in the distraction procedure.This has improved dependability of the present invention.
See shown in Figure 1ly, hollow outs have distortion cavity 121 in the middle of the said distortion arm 12.The bending strength of distortion arm 12 depends on its gauge; And the influence of its height dimension is less, and said distortion cavity 121 is set, and can reduce the actual height of said distortion arm 12; Economical with materials can make said distortion arm 12 obtain better deformation behavior on the other hand on the one hand.
For improving the structural strength of distortion arm 12, the present invention also can be provided with ribs in said distortion cavity 121.
The above only is a preferred embodiments of the present invention, so all equivalences of doing according to the described structure of patent claim of the present invention, characteristic and principle change or modify, includes in patent claim of the present invention.
Claims (9)
1. fractures traction bow; It comprises along the symmetrically arranged a pair of bow arm of traction hinge; Each bow arm end is provided with and wears the connecting portion that nail is connected, and it is characterized in that: said connecting portion comprises the buckling body that oppositely is bent to form from said bow arm end, is formed with the catching groove of wide-mouth between said buckling body and the bow arm; Said catching groove is provided with the locking device that makes said catching groove opening closed near opening part; Said catching groove bottom land is formed with along the said screw axes of wearing to the link slot that is provided with, said link slot when said catching groove opening is closed and the said nail surface of wearing be complementary, said catching groove is concaved with guiding groove at said link slot bottom land.
2. fractures traction bow according to claim 1 is characterized in that: said locking device comprises the through hole that runs through said buckling body and bow arm, and the clamping screw assembly that is arranged in said through hole.
3. fractures traction bow according to claim 2 is characterized in that: said bow arm convexes with boss in said through hole, and said boss is provided with from bending the back side of arm with respect to said catching groove.
4. according to any described fractures traction bow of claim 1～3; It is characterized in that: said bow arm comprises from drawing the distortion arm that hinge extends; And the linking arm that connects said distortion arm and connecting portion; Said distortion arm becomes the angle setting with the pulling force direction, and said linking arm is provided with along said pulling force direction; Said linking arm is at the width of the said catching groove of the correspondence position width greater than the linking arm remainder.
5. fractures traction bow according to claim 4 is characterized in that: said distortion arm thickness is not less than the twice of said linking arm thickness.
6. fractures traction bow according to claim 5 is characterized in that: the folding corner of said distortion arm and linking arm is provided with the arc transition chamfering.
7. fractures traction bow according to claim 6 is characterized in that: the junction of said distortion arm and linking arm is provided with circular arc chamfering.
8. fractures traction bow according to claim 7 is characterized in that: hollow out has the distortion cavity in the middle of the said distortion arm.
9. fractures traction bow according to claim 8 is characterized in that: be provided with ribs in the said distortion cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010615429A CN102068300B (en) | 2010-12-31 | 2010-12-31 | Traction bow for treating fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010615429A CN102068300B (en) | 2010-12-31 | 2010-12-31 | Traction bow for treating fracture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102068300A CN102068300A (en) | 2011-05-25 |
| CN102068300B true CN102068300B (en) | 2012-10-10 |
Family
ID=44027185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010615429A Expired - Fee Related CN102068300B (en) | 2010-12-31 | 2010-12-31 | Traction bow for treating fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102068300B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9855036B2 (en) * | 2013-11-13 | 2018-01-02 | Arthrex, Inc. | Staples for generating and applying compression within a body |
| CN103040506B (en) * | 2012-12-12 | 2014-11-26 | 天津天好医疗器械有限公司 | Disposable bone tractor |
| CN105213003B (en) * | 2015-09-21 | 2017-03-29 | 山东航维骨科医疗器械股份有限公司 | A kind of traction bow |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2095651U (en) * | 1990-06-30 | 1992-02-12 | 张继明 | Stair shape tracting needle fixing device |
| CN2439263Y (en) * | 2000-07-27 | 2001-07-18 | 曾炳芳 | Skeletal traction apparatus with adjustable rotation angle |
| CN2533815Y (en) * | 2002-03-11 | 2003-02-05 | 杨晓琴 | Traction bow for orthopedics use |
| CN201409973Y (en) * | 2009-03-09 | 2010-02-24 | 赵文苗 | Bone tractor with locking devices on lateral openings |
| CN201968809U (en) * | 2010-12-31 | 2011-09-14 | 任绍东 | Fracture treatment traction bow |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HU3082U (en) * | 2005-05-24 | 2006-04-28 | Istvan Dr Kadas | Device for covered screwing of shortening fractures |
-
2010
- 2010-12-31 CN CN201010615429A patent/CN102068300B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2095651U (en) * | 1990-06-30 | 1992-02-12 | 张继明 | Stair shape tracting needle fixing device |
| CN2439263Y (en) * | 2000-07-27 | 2001-07-18 | 曾炳芳 | Skeletal traction apparatus with adjustable rotation angle |
| CN2533815Y (en) * | 2002-03-11 | 2003-02-05 | 杨晓琴 | Traction bow for orthopedics use |
| CN201409973Y (en) * | 2009-03-09 | 2010-02-24 | 赵文苗 | Bone tractor with locking devices on lateral openings |
| CN201968809U (en) * | 2010-12-31 | 2011-09-14 | 任绍东 | Fracture treatment traction bow |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102068300A (en) | 2011-05-25 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20121010 Termination date: 20141231 |
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| EXPY | Termination of patent right or utility model |