CN204890094U - Boring sleeve of thighbone - Google Patents
Boring sleeve of thighbone Download PDFInfo
- Publication number
- CN204890094U CN204890094U CN201520611330.4U CN201520611330U CN204890094U CN 204890094 U CN204890094 U CN 204890094U CN 201520611330 U CN201520611330 U CN 201520611330U CN 204890094 U CN204890094 U CN 204890094U
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- sleeve
- bayonet socket
- profile
- utility
- model
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Abstract
The utility model discloses a boring sleeve of thighbone is by barrel (1) to and set up at secondary handle (2) of barrel (1) inserting needle end constitution, its characterized in that, barrel (1) withdraw the needle the end port department be equipped with profile of tooth bayonet socket (3). The utility model discloses be equipped with profile of tooth bayonet socket (3) in telescopic bottom, it can fully combine with the appearance of head of femur to can be effectual ensure the drill bit when the operation, preset's the drilling position can not deviated in this sleeve bottom, and then the maximum accuracy of ensureing to implant the steel nail.
Description
Technical field
This utility model relates to a kind of medical device, specifically refers to the boring sleeve of a kind of femur.
Background technology
At present, Procedure on Intertrochanteric Fracture in Aged is as common fracture, and PFNA (near end of thighbone is anti-revolves intramedullary needle) is as the standard of conventional minimal invasive operation.This operating procedure is probably divided into: 1, fracture traction closed reduction; 2, draw point penetrates the entry point (x-ray fluoroscopy determination entry point is correct) of femur; 3, surrounding soft tissue is under the protection of hollow metal sleeve, and core drill is along the large femoral bone cavitas medullaris of wire drill; 4, PFNA is inserted.
Because traditional hollow metal sleeve bottom is plane, easy slip, and entry point place usually has fracture line to pass through, therefore when drill bit is in high-speed rotation, the boring of sleeve bottom just can be made to depart from the bore position preset, or the fracture resetted is done to be separated, and then after making to implant PFNA, fracture can not reach reset in advance completely, not only makes the healing time of the wounded extend, and increases operative failure probability.
Utility model content
The purpose of this utility model is to overcome the defect that can depart from the bore position preset when using sleeve to hole to femoral greater trochanter at present, provides a kind of boring sleeve of femur being not easy slip, can maintaining reset.
This utility model is achieved through the following technical solutions: the boring sleeve of a kind of femur, by cylindrical shell, and is arranged on the assist handle composition of cylindrical shell inserting needle end, meanwhile, is provided with profile of tooth bayonet socket in the port going out pin end of cylindrical shell.
For guaranteeing result of use, the tooth depth of described profile of tooth bayonet socket is 4mm, and its between cog width is 4mm, and the height of described cylindrical shell is 88mm.
Meanwhile, the thickness of described profile of tooth bayonet socket is 1.5mm.
This utility model compared with prior art has the following advantages and beneficial effect:
(1) this utility model is provided with profile of tooth bayonet socket in the bottom of sleeve, it fully can be combined with the profile of femoral greater trochanter, thus effectively can guarantee that drill bit is operationally, this sleeve bottom can not depart from the bore position preset, and then farthest guarantees the accuracy implanting steel nail.
(2) this utility model can shorten the time of femur PFNA implant surgery significantly, can effectively avoid the displacement of drill bit and come off, and farthest can reduce the misery of the wounded.
Accompanying drawing explanation
Fig. 1 is Facad structure schematic diagram of the present utility model.
Fig. 2 is side structure schematic diagram of the present utility model.
Wherein, the Reference numeral in above accompanying drawing is respectively:
1-cylindrical shell, 2 assist handles, 3-profile of tooth bayonet socket.
Detailed description of the invention
Below in conjunction with embodiment, this utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment
As shown in Fig. 1 ~ 2, sleeve of the present utility model, by cylindrical shell 1, is arranged on the assist handle 2 of cylindrical shell 1 inserting needle end, and is arranged on the profile of tooth bayonet socket 3 that cylindrical shell 1 goes out pin end and forms.Wherein, this cylindrical shell 1 can be made by rigid plastics or metal, and its best making material is alloy.Because the density of alloy is high, therefore just can not produce burr at profile of tooth bayonet socket 3 place made, and then make its smooth surface, not easily attracts bacteria, be convenient to clean.
Wherein, the shape of profile of tooth bayonet socket 3 can be combined fully with human femur under loading greater trochanter, thus the sleeve farthest avoiding sleeve to cause due to the vibration of drill bit when bit drills is moved displacement and fracture shift separation.Meanwhile, for improving the handling and stability of sleeve, the present embodiment is also provided with assist handle 2 at the inserting needle end of sleeve 1.
For further illustrating this utility model and the conventional sleeve weak effect distance when clinical treatment, what the applicant was detailed adopts conventional sleeve to carry out femur boring and adopt the sleeve of the application to carry out femur borehole data to 50 examples adding up to 50 examples, and its statistical result is in table 1.
Table 1:
| Sleeve type | Case number of packages | Position deviation ratio | Smallest offset distance | Peak excursion distance |
| Conventional sleeve | 50 examples | 20％ | 2mm | 10mm |
| The application's sleeve | 50 examples | 5％ | 1mm | 3mm |
Therefore, as can be seen from data above, successful of the present utility model be better than traditional sleeve, thus the generation of sleeve shifting phenomena when can effectively stop to hole.
Because the shape of the femoral greater trochanter of different people is not identical, therefore from the case of table statistics, this profile of tooth bayonet socket 3 is made into: when height 4mm, between cog width 4mm, its ratio covering crowd is 95%.
Meanwhile, for guaranteeing best result of use of the present utility model, the height of described cylindrical shell is 88mm; The thickness of cylindrical shell and profile of tooth bayonet socket is 1.5mm.
As mentioned above, just this utility model can well be realized.
Claims (4)
1. the boring sleeve of femur, by cylindrical shell (1), and be arranged on assist handle (2) composition of cylindrical shell (1) inserting needle end, it is characterized in that, be provided with profile of tooth bayonet socket (3) in the port going out pin end of cylindrical shell (1).
2. the boring sleeve of a kind of femur according to claim 1, is characterized in that, the tooth depth of described profile of tooth bayonet socket (3) is 4mm, and its between cog width is 4mm.
3. the boring sleeve of a kind of femur according to claim 2, is characterized in that, the height of described cylindrical shell (1) is 88mm.
4. the boring sleeve of a kind of femur according to claim 3, is characterized in that, the thickness of described profile of tooth bayonet socket (3) is 1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520611330.4U CN204890094U (en) | 2015-08-13 | 2015-08-13 | Boring sleeve of thighbone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520611330.4U CN204890094U (en) | 2015-08-13 | 2015-08-13 | Boring sleeve of thighbone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204890094U true CN204890094U (en) | 2015-12-23 |
Family
ID=54912317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520611330.4U Expired - Fee Related CN204890094U (en) | 2015-08-13 | 2015-08-13 | Boring sleeve of thighbone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204890094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109157250A (en) * | 2018-07-23 | 2019-01-08 | 兰州大学 | Hysteroscope puncture path stitching unstrument |
-
2015
- 2015-08-13 CN CN201520611330.4U patent/CN204890094U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109157250A (en) * | 2018-07-23 | 2019-01-08 | 兰州大学 | Hysteroscope puncture path stitching unstrument |
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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: 20151223 Termination date: 20210813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |