CN106725792A - 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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- CN106725792A CN106725792A CN201710016388.8A CN201710016388A CN106725792A CN 106725792 A CN106725792 A CN 106725792A CN 201710016388 A CN201710016388 A CN 201710016388A CN 106725792 A CN106725792 A CN 106725792A
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- intramedullary nail
- afterbody
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- bend
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7216—Intramedullary pins, nails or other devices for bone lengthening or compression
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7208—Flexible pins, e.g. ENDER pins
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
- A61B17/725—Intramedullary pins, nails or other devices with special means of locking the nail to the bone with locking pins or screws of special form
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
A kind of flexible intramedullary nail with pressurization anti-rotation function, belongs to orthopedic medical device technical field, for the interior fixation of 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, the bending section of intramedullary nail head and intramedullary nail afterbody is with intramedullary nail middle part at grade, intramedullary nail head, intramedullary nail middle part, fluted respectively in the intramedullary nail rivet nut of the winding arc both sides of intramedullary nail afterbody.The present invention is the pioneering of intramedullary nail, traditional stretched intramedullary nail is changed to the arc intramedullary nail of bending, make intramedullary nail while carrying out interior fixed by lock screw, with elastic pressurized and the effect for preventing transverse rotation, the new function in interior fixation of intramedullary nail is imparted, improve the interior fixed effect of intramedullary nail, accelerate the time of union, the pain of patient is reduced, for the treatment of orthopaedics long bone fracture provides new strong utensil, is worth of widely use.
Description
Technical field
The present invention relates to a kind of flexible intramedullary nail for long bone metaphysis comminuted fracture, belong to orthopedic medical device skill
Art field.
Background technology
In orthopaedics therapy, for DF, proximal tibia and the isometric bone metaphysis comminuted fracture of PH,
Clinician can usually select the unilateral or bilateral steel plate to carry out outer fixation, but the method need to peel off most of soft tissue, and wound is big,
Amount of bleeding is more, therefore 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, contraposition, angulation deformity and rotation deformity caused by malalignment then occur.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, the Action of Gravity Field due to human body in orthostatic position there can be pressurization to fracture end, compensate for intramedullary nail
The fixation 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 has various, such as conventional Ender is followed closely, Lottes is followed closely,
Rectangle is followed closely ... etc..But traditional intramedullary nail has the disadvantage that：First, traditional intramedullary nail typically will by being squeezed into joint,
The integrality in joint can be destroyed；Secondly, traditional intramedullary nail itself cannot realize the pressure effect to fracture end, it is necessary to by putting
Entering more dynamic state screws can just realize elastic pressurized, and inserting for dynamic state screw also increased 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 is crushed because of metaphysis and not supported reliably, only cannot realize strong fixation by traditional screw, therefore greatly
Its extensive use is limited greatly.
The content of the invention
The technical problems to be solved by the invention are 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 transverse rotation can be prevented so that fixed effect is more
Definitely, the healing as early as possible of fracture is conducive to.
Solving the technical scheme of above-mentioned technical problem is：
A kind of flexible intramedullary nail with pressurization anti-rotation function, it is by intramedullary nail head, intramedullary nail middle part, intramedullary nail afterbody group
The two ends in the middle part of intramedullary nail are connected into, intramedullary nail head and intramedullary nail afterbody and form integrative-structure, intramedullary nail head and
Intramedullary nail afterbody is respectively to the identical curving in the middle part of intramedullary nail, the bending section and marrow of intramedullary nail head and intramedullary nail afterbody
At grade, intramedullary nail head, intramedullary nail middle part, the intramedullary nail of the winding arc both sides of intramedullary nail afterbody are followed closely at interior nail middle part
Fluted respectively on body, the width positioned at the bowstring side groove of intramedullary nail rivet nut winding arc is more than intramedullary nail rivet nut arc of curvature
The width of the hunchbacked side groove of shape.
The above-mentioned flexible intramedullary nail with pressurization anti-rotation function, it has DF intramedullary nail, proximal tibia marrow respectively
Three kinds of interior nail and PH intramedullary nail, DF intramedullary nail include intramedullary nail and DF inner side marrow on the outside of DF
Interior nail, proximal tibia intramedullary nail includes intramedullary nail and proximal tibia inner side intramedullary nail, PH intramedullary nail on the outside of proximal tibia
It is intramedullary nail on the outside of PH.
The above-mentioned flexible intramedullary nail with pressurization anti-rotation function, the intramedullary nail head of intramedullary nail on the outside of the DF
It is 51-61 degree with the angle of bend in the middle part of intramedullary nail, intramedullary nail afterbody is 13-23 degree, stock with the angle of bend in the middle part of intramedullary nail
The intramedullary nail head of bone distal medial intramedullary nail is 40-50 degree with the angle of bend in the middle part of intramedullary nail, in intramedullary nail afterbody and marrow
Angle of bend in the middle part of nail 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 is 13-23 degree, shin with the angle of bend in the middle part of intramedullary nail
The intramedullary nail head of proximal bone inner side intramedullary nail is 25-35 degree with the angle of bend in the middle part of intramedullary nail, in intramedullary nail afterbody and marrow
Angle of bend in the middle part of nail 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 PH
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, has 6-12 in the intramedullary nail middle part rivet nut of every kind of intramedullary nail
Individual screw hole, screw hole is arranged along the length sequence of intramedullary nail rivet nut, and screw hole is located at intramedullary nail rivet nut
Groove in.
The beneficial effects of the invention are as follows：
Intramedullary nail rivet nut of the invention is arc, and is respectively provided with groove in the winding arc both sides of intramedullary nail rivet nut.Using
After this structure, the arc rivet nut of intramedullary nail can play a part of elastic pressurized in the longitudinal direction of long bone, intramedullary nail rivet nut it is curved
The groove of bent arc both sides can prevent intramedullary nail from transverse rotation occurring so that fixed effect is more definite, be conducive to fracture
Heal as early as possible.
The present invention is the pioneering of intramedullary nail, and traditional stretched intramedullary nail is changed to the arc intramedullary nail of bending, makes intramedullary nail
While carrying out interior fixed by lock screw, with elastic pressurized and the effect for preventing transverse rotation, impart
The new function in interior fixation of intramedullary nail, improves the interior fixed effect of intramedullary nail, accelerates the time of union, reduces
The pain of patient, for the treatment of orthopaedics long bone fracture provides new strong utensil, is worth of widely use.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the use state schematic diagram of intramedullary nail on the outside of DF；
Fig. 3 is the use state schematic diagram of DF inner side intramedullary nail；
Fig. 4 is the use state schematic diagram of intramedullary nail on the outside of distal tibial；
Fig. 5 is the use state schematic diagram of medial distal tibia intramedullary nail；
Fig. 6 is the use state schematic diagram of intramedullary nail on the outside of PH.
Marked in figure as follows：Intramedullary nail head 1, intramedullary nail middle part 2, intramedullary nail afterbody 3, groove 4, screw hole 5, branch
Intramedullary nail 10, DF inner side intramedullary nail 11, proximal tibia on the outside of support screw 6, femur 7, shin bone 8, humerus 9, DF
Intramedullary nail 14 on the outside of the intramedullary nail 13, PH of outside intramedullary nail 12, proximal tibia inner side.
Specific embodiment
The present invention is a kind of intramedullary nail, and it is made up of intramedullary nail head 1, intramedullary nail middle part 2, intramedullary nail afterbody 3, intramedullary nail
The two ends that head 1 and intramedullary nail afterbody 3 are connected to intramedullary nail middle part 2 form integrative-structure.
Fig. 1 shows, intramedullary nail head 1 and intramedullary nail afterbody 3 respectively to the identical curving at intramedullary nail middle part 2, in marrow
The bending section of nail head 1 and intramedullary nail afterbody 3 at grade, forms a two ends to the same side with intramedullary nail middle part 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, intramedullary nail head 1, intramedullary nail middle part 2, the intramedullary nail rivet nut of the winding arc both sides of intramedullary nail afterbody 3
Upper difference fluted 4, the width positioned at the bowstring side groove 4 of intramedullary nail rivet nut winding arc is 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 conducive to the healing as early as possible of fracture.
Fig. 1 shows there be 6-12 screw hole 5 in 2 rivet nuts of intramedullary nail middle part, and screw hole 5 is followed closely along intramedullary nail
Length sequence's arrangement of body, screw hole 5 is 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 invention includes three kinds of DF intramedullary nail, proximal tibia intramedullary nail and PH intramedullary nail.
The length of DF 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 PH intramedullary nail is 110-170mm, diameter 3-8mm.
DF intramedullary nail includes intramedullary nail 10 and DF inner side intramedullary nail 11, proximal tibia on the outside of DF
Intramedullary nail includes intramedullary nail 12 and proximal tibia inner side intramedullary nail 13 on the outside of proximal tibia, and PH intramedullary nail is PH
Outside intramedullary nail 14.They are respectively used to from DF outside, DF inner side, proximal tibia outside, proximal tibia
Side, PH outside carry out interior fixation.
Fig. 2 shows, when carrying out interior fixed from the outside of DF, the intramedullary nail head of intramedullary nail 10 on the outside of DF
1 is 51-61 degree with the angle of bend at intramedullary nail middle part 2, and intramedullary nail afterbody 3 is 13-23 with the angle of bend at intramedullary nail middle part 2
Degree.
Fig. 3 shows, when carrying out interior fixed from the inside of DF, the intramedullary nail head of DF inner side intramedullary nail 11
1 is 40-50 degree with the angle of bend at intramedullary nail middle part 2, and intramedullary nail afterbody 3 is 10-20 with the angle of bend at intramedullary nail middle part 2
Degree.
Fig. 4 shows, when carrying out interior fixed from the outside of proximal tibia, the intramedullary nail head of intramedullary nail 12 on the outside of proximal tibia
1 is 40-50 degree with the angle of bend at intramedullary nail middle part 2, and intramedullary nail afterbody 3 is 13-23 with the angle of bend at intramedullary nail middle part 2
Degree.
Fig. 5 shows, when carrying out interior fixed from the inside of proximal tibia, the intramedullary nail head of proximal tibia inner side intramedullary nail 13
1 is 25-35 degree with the angle of bend at intramedullary nail middle part 2, and intramedullary nail afterbody 3 is 11-21 with the angle of bend at intramedullary nail middle part 2
Degree.
Fig. 6 shows, when carrying out interior fixed from the outside of PH, the intramedullary nail head of intramedullary nail 14 on the outside of PH
1 is 13-23 degree with the angle of bend at intramedullary nail middle part 2, and intramedullary nail afterbody 3 is 3-13 degree with the angle of bend at intramedullary nail middle part 2.
The display of Fig. 2,3,5, the intramedullary nail 11, medial distal tibia on the inside of intramedullary nail 10, DF on the outside of DF
Intramedullary nail 13 also increases by one piece of supporting screw 6 when using, form triangular structure, makes fixed more stable.
Claims (6)
1. it is a kind of with pressurization anti-rotation function flexible intramedullary nail, 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 to intramedullary nail middle part（2）
Two 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）Bending section and intramedullary nail middle part（2）At grade, intramedullary nail
Head（1）, intramedullary nail middle part（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 more than intramedullary nail rivet nut winding arc hunchbacked side
Groove（4）Width.
2. it is according to claim 1 with pressurization anti-rotation function flexible intramedullary nail, it is characterised in that：It has strand respectively
Three kinds of bone distal end intramedullary nail, proximal tibia intramedullary nail and PH intramedullary nail, DF intramedullary nail are included outside DF
Side intramedullary nail（10）With DF inner side intramedullary nail（11）, proximal tibia intramedullary nail include proximal tibia on the outside of intramedullary nail（12）
With proximal tibia inner side intramedullary nail（13）, PH intramedullary nail is intramedullary nail on the outside of PH（14）.
3. it is according to claim 2 with pressurization anti-rotation function flexible intramedullary nail, 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, DF inner side intramedullary nail（11）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 10-
20 degree.
4. it is according to claim 2 with pressurization anti-rotation function flexible intramedullary nail, 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, proximal tibia inner side intramedullary nail（13）Intramedullary nail head（1）With
Intramedullary nail middle part（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. it is according to claim 2 with pressurization anti-rotation function flexible intramedullary nail, 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. according to claim 3,4 or 5 with pressurization anti-rotation function flexible intramedullary nail, it is characterised in that：It is every kind of
There is 6-12 screw hole in the intramedullary nail middle part rivet nut of intramedullary nail（5）, screw hole（5）Along intramedullary nail middle part（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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016388.8A CN106725792A (en) | 2017-01-10 | 2017-01-10 | A kind of flexible intramedullary nail with pressurization anti-rotation function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016388.8A CN106725792A (en) | 2017-01-10 | 2017-01-10 | A kind of flexible intramedullary nail with pressurization anti-rotation function |
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| CN106725792A true CN106725792A (en) | 2017-05-31 |
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ID=58948550
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| CN201710016388.8A Pending CN106725792A (en) | 2017-01-10 | 2017-01-10 | A kind of flexible intramedullary nail with pressurization anti-rotation function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107280748A (en) * | 2017-07-27 | 2017-10-24 | 焦作市新港医疗设备有限公司 | A kind of femoral interlocking nail and the femur using the femoral interlocking nail |
| CN107961067A (en) * | 2018-01-12 | 2018-04-27 | 四川大学华西医院 | Lateral inlet tibiobone marrow internal needle |
| CN108720913A (en) * | 2018-06-29 | 2018-11-02 | 宁波市第六医院 | A kind of pelvis front pillar marrow interior locating device |
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| US4169470A (en) * | 1977-10-19 | 1979-10-02 | Ender Hans G | Surgical nail for use in setting bone fractures, and tool for emplacing same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107280748A (en) * | 2017-07-27 | 2017-10-24 | 焦作市新港医疗设备有限公司 | A kind of femoral interlocking nail and the femur using the femoral interlocking nail |
| CN107280748B (en) * | 2017-07-27 | 2023-07-04 | 焦作市新港医疗设备有限公司 | Femur intramedullary nail |
| CN107961067A (en) * | 2018-01-12 | 2018-04-27 | 四川大学华西医院 | Lateral inlet tibiobone marrow internal needle |
| CN108720913A (en) * | 2018-06-29 | 2018-11-02 | 宁波市第六医院 | A kind of pelvis front pillar marrow interior locating device |
| CN108720913B (en) * | 2018-06-29 | 2024-06-21 | 宁波市第六医院 | Intramedullary positioning device for anterior pelvic column |
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Application publication date: 20170531 |