CN206792472U - A kind of flexible intramedullary nail with pressurization anti-rotation function - Google Patents
A kind of flexible intramedullary nail with pressurization anti-rotation function Download PDFInfo
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- CN206792472U CN206792472U CN201720024649.6U CN201720024649U CN206792472U CN 206792472 U CN206792472 U CN 206792472U CN 201720024649 U CN201720024649 U CN 201720024649U CN 206792472 U CN206792472 U CN 206792472U
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Abstract
A kind of flexible intramedullary nail with pressurization anti-rotation function, belongs to orthopedic medical device technical field, the interior fixation for long bone metaphysis comminuted fracture.Its technical scheme is：Intramedullary nail head and intramedullary nail afterbody are respectively to the identical curving in the middle part of intramedullary nail, intramedullary nail head and the bent portion of intramedullary nail afterbody with the middle part of intramedullary nail at grade, in the middle part of intramedullary nail head, intramedullary nail, fluted respectively in the intramedullary nail rivet nut of the winding arc both sides of intramedullary nail afterbody.The utility model is the pioneering of intramedullary nail, traditional stretched intramedullary nail is changed to the arc intramedullary nail of bending, while the intramedullary nail is fixed in being carried out by lock screw, with elastic pressurized and the effect for preventing transverse rotation, function new during intramedullary nail is fixed inside is imparted, improves the interior fixed effect of intramedullary nail, accelerate the time of union, reduce the pain of patient, provide new strong utensil for the treatment of orthopaedics long bone fracture, be worth of widely use.
Description
Technical field
A kind of flexible intramedullary nail for long bone metaphysis comminuted fracture is the utility model is related to, belongs to orthopaedic medical treatment device
Tool technical field.
Background technology
In orthopaedics therapy, for distal femur, proximal tibia and the isometric bone metaphysis comminuted fracture of proximal humerus,
It is outer fixed that clinician can usually select unilateral or bilateral steel plate to carry out, but the method need to peel off most of soft tissue, and wound is big,
Amount of bleeding is more, thus usually can concomitant infections, the generation of the complication such as disunion and malunion.Due to Interal fixation stress
Concentrate, easily loosen, or even be easily broken off, then align, angulation deformity and rotation deformity caused by malalignment.Except
Outside Interal fixation, Intramedullary nailing is also clinical widely used treatment means, and intramedullary nail is used for the treatment of Long bone shaft fracture at lower limbs
There is its unique superiority, because Action of Gravity Field of the human body in orthostatic position there can be pressurization to fracture end, compensate for intramedullary nail
The fixed untight shortcoming of fracture ends in contact that may be present.Therefore at present in the treatment of fracture of lower limb, intramedullary nail is also to face
One of main selection of bed doctor.Intramedullary nail for treating shaft fracture have a variety of, such as conventional Ender nails, Lottes nails,
Rectangle is followed closely ... etc..But traditional intramedullary nail has the disadvantage that：First, traditional intramedullary nail will typically be squeezed into by intra-articular,
The integrality in joint can be destroyed；Secondly, traditional intramedullary nail itself can not realize the pressure effect to fracture end, it is necessary to by putting
Elastic pressurized can just be realized by entering more dynamic state screws, and inserting for dynamic state screw also adds wound model to a certain extent
Enclose, be unfavorable for the getting up early rehabilitation of patient；3rd, for long bone shaft fracture, especially merge the patient of metaphysis comminuted fracture,
Traditional intramedullary nail does not support reliably because metaphysis crushes, and only can not realize strong fixation by traditional screw, therefore greatly
Its extensive use is limited greatly.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of flexible intramedullary nail with pressurization anti-rotation function,
This intramedullary nail can carry out elastic pressurized in the longitudinal direction of long bone, while can prevent transverse rotation so that fixed effect
It is more definite, be advantageous to the healing as early as possible of fracture.
Solve above-mentioned technical problem technical scheme be：
A kind of flexible intramedullary nail with pressurization anti-rotation function, it is by intramedullary nail head, intramedullary nail middle part, intramedullary nail tail
The both ends that portion's composition, intramedullary nail head and intramedullary nail afterbody are connected in the middle part of intramedullary nail form integrative-structure, intramedullary nail head
Portion and intramedullary nail afterbody are respectively to the identical curving in the middle part of intramedullary nail, the bent portion of intramedullary nail head and intramedullary nail afterbody
With intramedullary nail middle part at grade, in the middle part of intramedullary nail head, intramedullary nail, in the marrow of the winding arc both sides of intramedullary nail afterbody
It is fluted respectively in nail rivet nut, it is curved to be more than intramedullary nail rivet nut positioned at the width of the bowstring side groove of intramedullary nail rivet nut winding arc
The width of the hunchbacked side groove of bent arc.
The above-mentioned flexible intramedullary nail with pressurization anti-rotation function, it has distal femur intramedullary nail, proximal tibia marrow respectively
Interior three kinds of nail and proximal humerus intramedullary nail, distal femur intramedullary nail include intramedullary nail and distal femur inner side marrow on the outside of distal femur
Interior nail, proximal tibia intramedullary nail include intramedullary nail and proximal tibia inner side intramedullary nail, proximal humerus intramedullary nail on the outside of proximal tibia
For intramedullary nail on the outside of proximal humerus.
The above-mentioned flexible intramedullary nail with pressurization anti-rotation function, the intramedullary nail head of intramedullary nail on the outside of the distal femur
It is 51-61 degree with the angle of bend in the middle part of intramedullary nail, intramedullary nail afterbody and the angle of bend in the middle part of intramedullary nail are 13-23 degree, stock
The intramedullary nail head of bone distal medial intramedullary nail and the angle of bend in the middle part of intramedullary nail be 40-50 degree, in intramedullary nail afterbody and marrow
The angle of bend at nail middle part is 10-20 degree.
The above-mentioned flexible intramedullary nail with pressurization anti-rotation function, the intramedullary nail head of intramedullary nail on the outside of the proximal tibia
It is 40-50 degree with the angle of bend in the middle part of intramedullary nail, intramedullary nail afterbody and the angle of bend in the middle part of intramedullary nail are 13-23 degree, shin
The intramedullary nail head of intramedullary nail and the angle of bend in the middle part of intramedullary nail be 25-35 degree on the inside of proximal bone, in intramedullary nail afterbody and marrow
The angle of bend at nail middle part is 11-21 degree.
The above-mentioned flexible intramedullary nail with pressurization anti-rotation function, the intramedullary nail head of intramedullary nail on the outside of the proximal humerus
It is 13-23 degree with the angle of bend in the middle part of intramedullary nail, intramedullary nail afterbody is 3-13 degree with the angle of bend in the middle part of intramedullary nail.
The above-mentioned flexible intramedullary nail with pressurization anti-rotation function, there is 6-12 in rivet nut in the middle part of the intramedullary nail of every kind of intramedullary nail
Individual screw hole, length sequence arrangement of the screw hole along intramedullary nail rivet nut, screw hole are located at intramedullary nail rivet nut
Groove in.
The beneficial effects of the utility model are：
Intramedullary nail rivet nut of the present utility model is arc, and is respectively provided with the winding arc both sides of intramedullary nail rivet nut recessed
Groove.After this structure, the arc rivet nut of intramedullary nail can play a part of elastic pressurized, intramedullary nail nail in the longitudinal direction of long bone
The groove of the winding arc both sides of body can prevent intramedullary nail from transverse rotation occurs so that fixed effect is more definite, is advantageous to
The healing as early as possible of fracture.
The utility model is the pioneering of intramedullary nail, and traditional stretched intramedullary nail is changed to the arc intramedullary nail of bending, makes marrow
While interior nail is fixed in being carried out by lock screw, with elastic pressurized and the effect for preventing transverse rotation, assign
Intramedullary nail function new in fixing inside has been given, the interior fixed effect of intramedullary nail has been improved, accelerates the time of union, subtract
The pain of patient is lacked, has provided new strong utensil for the treatment of orthopaedics long bone fracture, be worth of widely use.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the use state diagram of intramedullary nail on the outside of distal femur；
Fig. 3 is the use state diagram of intramedullary nail on the inside of distal femur；
Fig. 4 is the use state diagram of intramedullary nail on the outside of distal tibial；
Fig. 5 is the use state diagram of medial distal tibia intramedullary nail；
Fig. 6 is the use state diagram of intramedullary nail on the outside of proximal humerus.
Marked in figure as follows：2, intramedullary nail afterbody 3, groove 4, screw hole 5, branch in the middle part of intramedullary nail head 1, intramedullary nail
Support screw 6, femur 7, shin bone 8, humerus 9, intramedullary nail 10 on the outside of distal femur, intramedullary nail 11, proximal tibia on the inside of distal femur
Outside intramedullary nail 12, intramedullary nail 13 on the inside of proximal tibia, intramedullary nail 14 on the outside of proximal humerus.
Embodiment
The utility model is a kind of intramedullary nail, and it is made up of 2, intramedullary nail afterbody 3 in the middle part of intramedullary nail head 1, intramedullary nail, marrow
The both ends that interior nail head 1 and intramedullary nail afterbody 3 are connected in the middle part of intramedullary nail 2 form integrative-structure.
Fig. 1 shows, intramedullary nail head 1 and intramedullary nail the afterbody 3 identical curving in the middle part of intramedullary nail 2 respectively, in marrow
The bent portion of nail head 1 and intramedullary nail afterbody 3 at grade, forms a both ends to the same side with the middle part of intramedullary nail 2
The arc intramedullary nail of bending.After intramedullary nail squeezes into long bone, arc rivet nut can play a part of elastic pressurized in the longitudinal direction of long bone.
Fig. 1 shows, the intramedullary nail rivet nut of the winding arc both sides of 2, intramedullary nail afterbody 3 in the middle part of intramedullary nail head 1, intramedullary nail
Upper difference fluted 4, the width positioned at the bowstring side groove 4 of intramedullary nail rivet nut winding arc are more than intramedullary nail rivet nut arc of curvature
The width of the hunchbacked side groove 4 of shape.The effect of groove 4 can be prevented from intramedullary nail and transverse rotation occur so that fixed effect
It is more definite, be advantageous to the healing as early as possible of fracture.
Fig. 1 shows there be 6-12 screw hole 5 in 2 rivet nuts in the middle part of intramedullary nail, screw hole 5 is followed closely along intramedullary nail
Length sequence's arrangement of body, screw hole 5 are located in the groove 4 of intramedullary nail rivet nut.Screw hole 5 facilitates lock screw certainly
Outside is squeezed into, and overcomes the problem that conventional lock screw inserts inconvenience.
Intramedullary nail of the present utility model includes distal femur intramedullary nail, proximal tibia intramedullary nail and proximal humerus intramedullary nail three
Kind.The length of distal femur intramedullary nail is 120-400mm, a diameter of 7-12mm；The length of proximal tibia intramedullary nail is 100-
350mm, diameter 4-12mm；The length of proximal humerus intramedullary nail is 110-170mm, diameter 3-8mm.
Distal femur intramedullary nail includes intramedullary nail 10 and distal femur inner side intramedullary nail 11, proximal tibia on the outside of distal femur
Intramedullary nail includes intramedullary nail 12 and proximal tibia inner side intramedullary nail 13 on the outside of proximal tibia, and proximal humerus intramedullary nail is proximal humerus
Outside intramedullary nail 14.They are respectively used on the outside of distal femur, on the inside of distal femur, on the outside of proximal tibia, in proximal tibia
It is fixed in being carried out on the outside of side, proximal humerus.
Fig. 2 is shown, when being fixed in being carried out on the outside of distal femur, the intramedullary nail head of intramedullary nail 10 on the outside of distal femur
1 and in the middle part of intramedullary nail 2 angle of bend be 51-61 degree, and intramedullary nail afterbody 3 and the angle of bend at intramedullary nail middle part 2 are 13-23
Degree.
Fig. 3 is shown, when being fixed in being carried out on the inside of distal femur, the intramedullary nail head of intramedullary nail 11 on the inside of distal femur
1 and in the middle part of intramedullary nail 2 angle of bend be 40-50 degree, and intramedullary nail afterbody 3 and the angle of bend at intramedullary nail middle part 2 are 10-20
Degree.
Fig. 4 is shown, when being fixed in being carried out on the outside of proximal tibia, the intramedullary nail head of intramedullary nail 12 on the outside of proximal tibia
1 and in the middle part of intramedullary nail 2 angle of bend be 40-50 degree, and intramedullary nail afterbody 3 and the angle of bend at intramedullary nail middle part 2 are 13-23
Degree.
Fig. 5 is shown, when being fixed in being carried out on the inside of proximal tibia, the intramedullary nail head of intramedullary nail 13 on the inside of proximal tibia
1 and in the middle part of intramedullary nail 2 angle of bend be 25-35 degree, and intramedullary nail afterbody 3 and the angle of bend at intramedullary nail middle part 2 are 11-21
Degree.
Fig. 6 is shown, when being fixed in being carried out on the outside of proximal humerus, the intramedullary nail head of intramedullary nail 14 on the outside of proximal humerus
1 and in the middle part of intramedullary nail 2 angle of bend be 13-23 degree, and intramedullary nail afterbody 3 and the angle of bend at intramedullary nail middle part 2 are 3-13 degree.
Fig. 2,3,5 show, intramedullary nail 10, intramedullary nail 11, medial distal tibia on the inside of distal femur on the outside of the distal femur
Intramedullary nail 13 also increases by one piece of supporting screw 6 when using, form triangular structure, makes fixed more stable.
Claims (6)
- A kind of 1. flexible intramedullary nail with pressurization anti-rotation function, it is characterised in that：It is by intramedullary nail head（1）, intramedullary nail Middle part（2）, intramedullary nail afterbody（3）Composition, intramedullary nail head（1）With intramedullary nail afterbody（3）It is connected in the middle part of intramedullary nail（2） Both ends formed integrative-structure, intramedullary nail head（1）With intramedullary nail afterbody（3）Respectively to intramedullary nail middle part（2）Phase the same side Bending, intramedullary nail head（1）With intramedullary nail afterbody（3）Bent portion and intramedullary nail in the middle part of（2）At grade, intramedullary nail Head（1）, in the middle part of intramedullary nail（2）, intramedullary nail afterbody（3）Winding arc both sides intramedullary nail rivet nut on it is fluted respectively（4）, Positioned at the bowstring side groove of intramedullary nail rivet nut winding arc（4）Width be more than intramedullary nail rivet nut winding arc hunchbacked side Groove（4）Width.
- 2. the flexible intramedullary nail with pressurization anti-rotation function according to claim 1, it is characterised in that：It has strand respectively Three kinds of bone distal end intramedullary nail, proximal tibia intramedullary nail and proximal humerus intramedullary nail, distal femur intramedullary nail are included outside distal femur Side intramedullary nail（10）With intramedullary nail on the inside of distal femur（11）, proximal tibia intramedullary nail include proximal tibia on the outside of intramedullary nail（12） With intramedullary nail on the inside of proximal tibia（13）, proximal humerus intramedullary nail is intramedullary nail on the outside of proximal humerus（14）.
- 3. the flexible intramedullary nail with pressurization anti-rotation function according to claim 2, it is characterised in that：The femoral far End outside intramedullary nail（10）Intramedullary nail head（1）With intramedullary nail middle part（2）Angle of bend be 51-61 degree, intramedullary nail afterbody （3）With intramedullary nail middle part（2）Angle of bend be 13-23 degree, intramedullary nail on the inside of distal femur（11）Intramedullary nail head（1）With In the middle part of intramedullary nail（2）Angle of bend be 40-50 degree, intramedullary nail afterbody（3）With intramedullary nail middle part（2）Angle of bend be 10- 20 degree.
- 4. the flexible intramedullary nail with pressurization anti-rotation function according to claim 2, it is characterised in that：The shin bone is near End outside intramedullary nail（12）Intramedullary nail head（1）With intramedullary nail middle part（2）Angle of bend be 40-50 degree, intramedullary nail afterbody （3）With intramedullary nail middle part（2）Angle of bend be 13-23 degree, intramedullary nail on the inside of proximal tibia（13）Intramedullary nail head（1）With In the middle part of intramedullary nail（2）Angle of bend be 25-35 degree, intramedullary nail afterbody（3）With intramedullary nail middle part（2）Angle of bend be 11- 21 degree.
- 5. the flexible intramedullary nail with pressurization anti-rotation function according to claim 2, it is characterised in that：The humerus is near End outside intramedullary nail（14）Intramedullary nail head（1）With intramedullary nail middle part（2）Angle of bend be 13-23 degree, intramedullary nail afterbody （3）With intramedullary nail middle part（2）Angle of bend be 3-13 degree.
- 6. the flexible intramedullary nail with pressurization anti-rotation function according to claim 3,4 or 5, it is characterised in that：It is every kind of There is 6-12 screw hole in rivet nut in the middle part of the intramedullary nail of intramedullary nail（5）, screw hole（5）In the middle part of along intramedullary nail（2） Length sequence's arrangement of rivet nut, screw hole（5）Positioned at the groove of intramedullary nail rivet nut（4）It is interior.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109984873A (en) * | 2019-05-14 | 2019-07-09 | 赵滨 | It is a kind of for filling up and supporting the ossis implants block of the dry epiphysis defect of long bone of limbs |
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- 2017-01-10 CN CN201720024649.6U patent/CN206792472U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109984873A (en) * | 2019-05-14 | 2019-07-09 | 赵滨 | It is a kind of for filling up and supporting the ossis implants block of the dry epiphysis defect of long bone of limbs |
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