CN204133589U - A kind of resisting revolves anti-back anatomical form femoral interlocking nail system - Google Patents
A kind of resisting revolves anti-back anatomical form femoral interlocking nail system Download PDFInfo
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- CN204133589U CN204133589U CN201420522559.6U CN201420522559U CN204133589U CN 204133589 U CN204133589 U CN 204133589U CN 201420522559 U CN201420522559 U CN 201420522559U CN 204133589 U CN204133589 U CN 204133589U
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Abstract
This utility model relates to and a kind of anti-revolves anti-back anatomical form femoral interlocking nail system, femoral bone cavitas medullaris squeezed into by main nail, the overlapping hole upper hole of main nail near-end squeezed into by wing nail, then join nail to be screwed into main nailing on and to establish threaded bottom overlapping hole, then squeeze into distal locking nail by sighting device to main nail far-end, finally tighten tail cap.Main nail in this utility model, wing are followed closely and are joined nail and combinationally uses, and add fixing femoral head neck, and anti-back is anti-revolves; Pressurization can be realized simultaneously; Distal screw interlocking angulation designs, and adds anti-the revolving property of system.
Description
[technical field]
This utility model relates to technical field of medical instruments, specifically, is a kind of resisting revolve anti-back anatomical form femoral interlocking nail system.
[background technology]
Application intramedullary nail treatment extremity fracture has quite long history.The operative treatment adopting intramedullary pin to carry out fracturing has following advantage: can control the axial line of force of fracture site, intramedullary nail with lock can prevent fracture rotation deformity, reduce the risk of inner matter fracture; Adopt closed and less invasive techniques, decrease postoperative infection rate; Decrease the destruction to periosteum blood fortune, retain having the somatomedin of ossification, expand that marrow chip has autologous bone graft effect, muscle contraction produces fine motion provides the factors such as mechanical stimulation to promote union of fracture in hematoma; Intramedullary pin center is fixed, flexible fastening, stress dispersion avoid stress force shelter reaction, and refracture incidence rate is low; Fixation can early functional exercise and heavy burden; Internal fixtion takes out by minimal incision *, Wicresoft.
Femoral interlocking nail is the first-selected internal fixtion of fracture of shaft of femur, and femoral interlocking nail is followed closely from Gamma, to PFN, to PFNA, product is updated.Gamma follows closely because its fixing arm of force is short, and dynamic changes process is reasonable; But its anti-rotation is poor, distal locking nail and main nail tip end close together simultaneously, easily produces stress and concentrates, cause fracture of shaft of femur.PFN overcomes the shortcoming of Gamma nail, and near-end adds 1 piece to be prevented revolving screw, and the lengthening distance of distal locking nail and nail tip, achieves flexible fastening, reduce the complication such as fracture of shaft of femur simultaneously; But squeeze into the design of 2 pieces of screws in neck of femur, limit the slip between main nail and forcing screw, fractional load revolves screw transmission through anti-, often occur preventing complication such as revolving screw cutting, forcing screw exits.PFNA is the improvement product of PFN, its maximum feature is its screw blade, is squeezing in process, and screw blade rotates, tamps sclerotin, form firmly anchor between its most advanced and sophisticated roomy contact area and sclerotin of compacting to make a concerted effort, make femoral head neck obtain strong internal fixtion.The particular design of the main nail of screw blade limits the rotary moveable of blade, makes it can only slide axially along main nail, while completing fracture end pressurization, can obtain better anti-rotation and support effect.Also be a key factor of impact operation in addition from the form of the main nail of design aspect intramedullary pin, whether the form of main nail adapts to the structure of pulp cavity, and whether entry point is convenient to Operation is also design the important consideration being.Therefore anti-to revolve anti-back be the emphasis needing in intramedullary pin design to consider, the form of the main nail of intramedullary pin is also the another aspect needing to consider emphatically in addition.
[utility model content]
This utility model one is anti-revolves anti-back anatomical form femoral interlocking nail system, will overcome the deficiency of intramedullary pin in the past, provides a kind of anatomical form femoral interlocking nail system with splendid anti-revolving property.
The purpose of this utility model is achieved through the following technical solutions:
A kind of resisting revolves anti-back anatomical form femoral interlocking nail system, and it is characterized in that, it comprises main nail, and wing is followed closely, and joins nail, distal locking nail and tail cap; It is characterized in that, described main nail, is provided with central through hole; Be provided with anterior arch, coupling femoral bone cavitas medullaris; Near-end is trapezoidal, is press-fitted with near end of thighbone; Near-end is provided with overlapping hole; Far-end is provided with multiple interlocking hole;
Described wing nail, is provided with through hole; Front end is wing; Tail end is column type, which is provided with a notch cuttype breach;
Described joins nail, is provided with rivet nut and ailhead; Rivet nut leading portion is provided with external screw thread I, which is provided with self tapping groove; Be provided with external screw thread II outside ailhead to mate with the female thread in main nail overlapping hole, and external diameter is not more than the notch diameter that wing nails on; Join nail ailhead and be provided with inner hexagonal hole or interior plum blossom hole.
A kind of resisting revolves anti-back anatomical form femoral interlocking nail system, and it comprises main nail, and wing is followed closely, and joins nail, distal locking nail and tail cap; It is characterized in that, femoral bone cavitas medullaris squeezed into by main nail, and the overlapping hole upper hole of main nail near-end squeezed into by wing nail, then joins nail and is screwed into main nailing on and establishes threaded bottom overlapping hole, squeeze into distal locking nail, be finally screwed into tail cap at main nail far-end.
Described main nail, is provided with central through hole; Be provided with anterior arch, coupling femoral bone cavitas medullaris; Its near-end is trapezoidal, is press-fitted with near end of thighbone; Its near-end and the larger angulation of cadre, be beneficial to into nail, convenient implantation; Its near-end is provided with overlapping hole, follows closely and join nail to use to coordinate wing; Its far-end is provided with multiple interlocking hole, mutual angulation, increases anti-revolving property.
Described overlapping hole, be made up of two mutual overlapping holes, wherein a hole is provided with part female thread; Described overlapping hole and mainly follow closely cadre's angulation is 110 ° ~ 150 °.
Described wing nail, is provided with through hole, coordinates the convenient implantation of guide pin; Front end is wing, little to the destruction of sclerotin; Tail end is column type, which is provided with a notch cuttype breach, and to coordinate shape in aggregates with joining to follow closely, anti-back is anti-revolves.
Described joins nail, is provided with rivet nut and ailhead; Rivet nut leading portion is provided with external screw thread I, which is provided with self tapping groove; Be provided with external screw thread II outside ailhead to mate with the female thread in main nail overlapping hole, and external diameter is not more than the notch diameter that wing nails on; Join nail ailhead and be provided with inner hexagonal hole or interior plum blossom hole, operate to coordinate operation tool.
Described external screw thread I pitch is greater than external screw thread II, to realize pressurization in art.
Described main nail, wing nail follow closely overlapping combination and is used with joining, and add fixing femoral head neck, anti-back resists revolves.
Assemble flow of the present utility model is:
A kind of resisting revolves anti-back anatomical form femoral interlocking nail system, femoral bone cavitas medullaris squeezed into by main nail, and the overlapping hole upper hole of main nail near-end squeezed into by wing nail, then joins nail and is screwed into main nailing on and establishes threaded bottom overlapping hole, then squeeze into distal locking nail by sighting device to main nail far-end, finally tighten tail cap.
Compared with prior art, good effect of the present utility model is:
(1) this utility model one anti-revolve main nail in anti-back anatomical form femoral interlocking nail system, wing nail and join nail combinationally use, what add femoral head neck is fixing, and anti-back is anti-revolves; Pressurization can be realized simultaneously;
(2) this utility model one is anti-revolves anti-back anatomical form femoral interlocking nail system, and wing nail leading portion is wing, little to bone destruction;
(3) this utility model one is anti-revolves in anti-back anatomical form femoral interlocking nail system, main nail anterior arch, and proximal cross-section is trapezoidal, femoral bone cavitas medullaris form of more fitting;
(4) this utility model one is anti-revolves in anti-back anatomical form femoral interlocking nail system, and main nail near-end and the larger angulation of cadre are beneficial to into nail, aspect Operation;
(5) this utility model one is anti-revolves anti-back anatomical form femoral interlocking nail system, and distal screw interlocking angulation designs, and adds anti-the revolving property of system.
[accompanying drawing explanation]
The anti-anti-back anatomical form femoral interlocking nail system of revolving of Fig. 1 one of the present utility model uses schematic diagram.
Fig. 2 one of the present utility model is anti-revolves anti-back anatomical form femoral interlocking nail system exploded perspective view.
Fig. 3 main nail schematic diagram of the present utility model; Fig. 3 a is sagittal plane schematic diagram; Fig. 3 b is coronalplane schematic diagram; Fig. 3 c is proximal cross section schematic diagram.
Fig. 4 wing nail of the present utility model schematic diagram.
Fig. 5 is of the present utility model joins nail schematic diagram.
Being labeled as in accompanying drawing: 1 main nail, 2 wing nails, 3 join nail, 4 distal locking nails, 5 tail caps, 11, overlapping hole, 111 female threads, 12 anterior arch, 13 is trapezoidal, 14 cadres, 15 through hole I, 21 wings (four wing), 22 column types, 23 breach I, 24 through hole II, 25 breach II, 31 rivet nuts, 311 external screw thread I, 312 self tapping grooves, 32 ailheads, 321 external screw thread II, 322, interior plum blossom hole.
[detailed description of the invention]
Below provide this utility model a kind of anti-detailed description of the invention of revolving anti-back anatomical form femoral interlocking nail system.
Embodiment 1
Accompanying drawing 1 and accompanying drawing 2 are respectively the anti-anatomical form femoral interlocking nail system of revolving of this utility model one and use and system schematic.A kind of anti-revolves anatomical form femoral interlocking nail system, follow closely 2 by main nail 1, wing, joins nail 3, distal locking nail 4 and tail cap 5 and form.Femoral bone cavitas medullaris squeezed into by main nail 1, overlapping hole 11 upper hole of main nail near-end squeezed into by rear wing nail 2, then joins nail 3 and is screwed into main nailing on and establishes threaded bottom overlapping hole, with resected femur head and neck of femur, then squeeze into distal locking nail 4 by sighting device to main nail far-end, finally tighten tail cap 5.
As shown in Figure 3, described main nail 1, is provided with central through hole I15; Be provided with anterior arch 12, coupling femoral bone cavitas medullaris; Its near-end is trapezoidal 13, is press-fitted with near end of thighbone; Its near-end 13 and the larger angulation of cadre 14, be beneficial to into nail, convenient implantation; Its near-end is provided with overlapping hole 11, uses to coordinate wing nail 2 and to join nail 3; Its far-end is provided with multiple interlocking hole, mutual angulation, increases anti-revolving property.Described overlapping hole 11, be made up of two mutual overlapping holes, wherein a hole is provided with part female thread 111; Described overlapping hole 11 follows closely cadre 14 angulation, about 110 ° ~ 150 ° with main.
As shown in Figure 4, described wing nail 2, front end is four wings 21, little to the destruction of sclerotin; Tail end is column type 22, which is provided with a notch cuttype breach I23 and breach II25, and to follow closely rivet nut section 31 and coordinate with joining, anti-back is anti-revolves; Be provided with through hole II24, coordinate the convenient implantation of guide pin.
As shown in Figure 5, described joins nail 3, is provided with rivet nut 31 and ailhead 32; Rivet nut leading portion is provided with external screw thread I311, which is provided with self tapping groove 312; Be provided with external screw thread II321 outside ailhead to mate with the female thread 111 in main nail overlapping hole, and external diameter is not more than the notch diameter that wing nails on; Join nail ailhead and be provided with interior plum blossom hole 322, operate to coordinate operation tool.Described external screw thread I311 pitch is greater than external screw thread II321, to realize pressurization in art.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, without departing from the concept of the premise utility; can also make some improvements and modifications, these improvements and modifications also should be considered as in protection domain of the present utility model.
Claims (3)
1. resist and revolve an anti-back anatomical form femoral interlocking nail system, it is characterized in that, it comprises main nail, and wing is followed closely, and joins nail, distal locking nail and tail cap; It is characterized in that, described main nail, is provided with central through hole; Be provided with anterior arch, coupling femoral bone cavitas medullaris; Near-end is trapezoidal, is press-fitted with near end of thighbone; Near-end is provided with overlapping hole; Far-end is provided with multiple interlocking hole;
Described wing nail, is provided with through hole; Front end is wing; Tail end is column type, which is provided with a notch cuttype breach;
Described joins nail, is provided with rivet nut and ailhead; Rivet nut leading portion is provided with external screw thread I, which is provided with self tapping groove; Be provided with external screw thread II outside ailhead to mate with the female thread in main nail overlapping hole, and external diameter is not more than the notch diameter that wing nails on; Join nail ailhead and be provided with inner hexagonal hole or interior plum blossom hole.
2. a kind of resisting as claimed in claim 1 revolves anti-back anatomical form femoral interlocking nail system, it is characterized in that, described overlapping hole, is made up of two mutual overlapping holes; Overlapping hole and mainly follow closely cadre's angulation is 110 ° ~ 150 °.
3. a kind of resisting as claimed in claim 1 revolves anti-back anatomical form femoral interlocking nail system, and it is characterized in that, described external screw thread I pitch is greater than external screw thread II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420522559.6U CN204133589U (en) | 2014-09-11 | 2014-09-11 | A kind of resisting revolves anti-back anatomical form femoral interlocking nail system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420522559.6U CN204133589U (en) | 2014-09-11 | 2014-09-11 | A kind of resisting revolves anti-back anatomical form femoral interlocking nail system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204133589U true CN204133589U (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420522559.6U Expired - Fee Related CN204133589U (en) | 2014-09-11 | 2014-09-11 | A kind of resisting revolves anti-back anatomical form femoral interlocking nail system |
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|---|---|
| CN (1) | CN204133589U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104688312A (en) * | 2015-03-17 | 2015-06-10 | 苏州瑞华医院有限公司 | Locking plate type intramedullary nail for femoral intertrochanteric fracture treatment |
| CN108577956A (en) * | 2018-07-03 | 2018-09-28 | 张殿英 | The bionical arm of force of near end of thighbone, which is rebuild, supports anti-rotation intramedullary nail system |
| CN108742810A (en) * | 2018-07-03 | 2018-11-06 | 张殿英 | A kind of anti-rotation intramedullary nail system of near end of thighbone |
| CN109259842A (en) * | 2018-10-10 | 2019-01-25 | 苏州吉美瑞医疗器械股份有限公司 | A kind of femur marrow internal fixation nail |
| CN113768599A (en) * | 2021-02-02 | 2021-12-10 | 浙江德康医疗器械有限公司 | Bone cement intramedullary nail fixing system |
-
2014
- 2014-09-11 CN CN201420522559.6U patent/CN204133589U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104688312A (en) * | 2015-03-17 | 2015-06-10 | 苏州瑞华医院有限公司 | Locking plate type intramedullary nail for femoral intertrochanteric fracture treatment |
| CN108577956A (en) * | 2018-07-03 | 2018-09-28 | 张殿英 | The bionical arm of force of near end of thighbone, which is rebuild, supports anti-rotation intramedullary nail system |
| CN108742810A (en) * | 2018-07-03 | 2018-11-06 | 张殿英 | A kind of anti-rotation intramedullary nail system of near end of thighbone |
| CN109259842A (en) * | 2018-10-10 | 2019-01-25 | 苏州吉美瑞医疗器械股份有限公司 | A kind of femur marrow internal fixation nail |
| CN113768599A (en) * | 2021-02-02 | 2021-12-10 | 浙江德康医疗器械有限公司 | Bone cement intramedullary nail fixing system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20200911 |