CN215129897U - Novel porous locking intramedullary nail - Google Patents
Novel porous locking intramedullary nail Download PDFInfo
- Publication number
- CN215129897U CN215129897U CN202120643970.9U CN202120643970U CN215129897U CN 215129897 U CN215129897 U CN 215129897U CN 202120643970 U CN202120643970 U CN 202120643970U CN 215129897 U CN215129897 U CN 215129897U
- Authority
- CN
- China
- Prior art keywords
- nail
- locking
- main
- intramedullary nail
- intramedullary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010079 rubber tapping Methods 0.000 claims abstract description 9
- 238000005452 bending Methods 0.000 claims description 4
- 210000000988 bone and bone Anatomy 0.000 abstract description 13
- 230000035876 healing Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract description 4
- 206010017076 Fracture Diseases 0.000 description 31
- 208000010392 Bone Fractures Diseases 0.000 description 29
- 230000008901 benefit Effects 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000002349 favourable effect Effects 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 208000004367 Tibial Fractures Diseases 0.000 description 4
- 206010017088 Fracture nonunion Diseases 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 210000003414 extremity Anatomy 0.000 description 3
- 210000002303 tibia Anatomy 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 206010043827 tibia fracture Diseases 0.000 description 1
Images
Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model discloses a novel porous locking intramedullary nail, which comprises a main intramedullary nail, wherein a transverse locking hole is arranged on the main intramedullary nail, a transverse locking nail passes through the transverse locking hole, a plurality of main nail holes are arranged on the main intramedullary nail, a locking internal thread is arranged on the inner wall of the main nail hole, the transverse locking nail comprises a transverse locking nail main body, a self-tapping thread is arranged on the transverse locking nail main body, a nail cap is arranged at the right end of the transverse locking nail main body, so that the initial stability of a fracture end is increased, the early-rising functional exercise is facilitated, the early-rising healing of the fracture is facilitated, a central fixed angle device is formed, the bearing stress of the intramedullary nail can be effectively dispersed between each screw and the bone surface, the wound area is small, the operation method is simple and convenient, the axial center is fixed, the resetting can be better, and the rotation of the fracture end can be effectively controlled, maintaining the length of the bone, carrying out early load bearing, and having fast recovery speed of limb functions.
Description
Technical Field
The utility model relates to the technical field of medical treatment, in particular to a novel porous locking intramedullary nail.
Background
Tibial fractures are one of the most common long tubular fractures, and the incidence rate is highest in the whole-body long tubular fractures, accounting for about 13.7% of the whole-body fractures. The tibia serves as the main weight-bearing part of the human lower limb skeleton, and approximately bears 5/6 of the total weight. Fracture nonunion still easily occurs after the tibia fracture is treated. While the incidence of tibial bone nonunion accounts for 2% -15% of all tibial fractures. Therefore, tibial fractures have been considered as a problem and it is important to select an appropriate treatment. Due to the special anatomical and physiological characteristics of the tibia itself,
the operation method mainly comprises the methods of internal fixation of a common compression steel plate, internal fixation of an intramedullary nail with a lock, internal fixation of an LCP steel plate combined with the MIPPO technology, external fixation frame fixation and the like. Currently, the most applied treatment for the fracture of the tibia is locking intramedullary nail fixation. Because the treatment by using the intramedullary nail with lock has the advantages of small wound area, simple and convenient operation method, axial fixation, better reduction, effective control of the rotation of the broken end of the fracture, maintenance of the length of the bone, early loading, high recovery speed of limb functions and the like, the intramedullary nail with lock is widely popularized and applied clinically.
Fracture of the locking nail is one of the major complications of intramedullary nail fixation before fracture healing. According to the report of related documents, the failure rate of the lock pin is as high as 6.3%. A large amount of research data show that the main reason for the fracture of the lock pin is insufficient strength; on the other hand, stress is concentrated at the connecting part of the intramedullary nail and the interlocking nail when the intramedullary nail bears load, which easily causes fatigue fracture of the intramedullary nail or the interlocking nail and leads to failure of internal fixation. Delayed or nonunion of bones is also a common complication in the process of treating bone fracture, and recently, 5% -28.6% of delayed union rate and 0% -8% of nonunion rate are reported according to documents, and mainly when intramedullary nail fixation is applied, the locking nail and the main nail cannot be completely fixed in a tight fit manner due to the design of the locking hole of the locking nail and the main nail, a little space exists, only relative fixation can be realized, and the micro motion and instability of the broken end can still exist. If the fracture surface is applied to unstable fracture or unstable fracture of the lower tibial segment, the healing of the fracture is seriously influenced. The development of an intramedullary nail and a locking nail structure which can fix the fracture firmly and stably and relatively disperse the stress is one of the problems to be treated in clinical orthopedics at present.
However, the locking steel plate is eccentrically fixed and is not mechanically fixed as the center. Although the intramedullary nail belongs to central fixation, the intramedullary nail is easy to cause high stress shielding, fracture of the locking nail and delayed or nonunion of fracture healing, so a novel porous locking intramedullary nail is designed.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a novel porous locking intramedullary nail which can effectively solve the problem provided by the background technology.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a novel porous locking intramedullary nail, includes intramedullary nail main nail, be provided with horizontal locking hole on the intramedullary nail main nail, horizontal locking hole inside passes horizontal locking nail, be provided with a plurality of main nail hole on the intramedullary nail main nail, be provided with the locking internal thread on the main nail hole inner wall, horizontal locking nail is including horizontal locking nail main part, be provided with self tapping screw thread in the horizontal locking nail main part, horizontal locking nail main part right-hand member is provided with the head of a nail.
Furthermore, a guider is connected to the upper end of the main nail of the intramedullary nail.
Further, the transverse locking holes and the main nail holes are arranged in a staggered mode.
Further, the cross locking nail is designed in a self-tapping type locking screw structure.
Furthermore, a bending section is arranged on the intramedullary nail main nail.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model discloses borrow the advantage of reference locking steel sheet, combine to have the effect of internal fixation support again, overcome in the intramedullary nail locking nail and main nail lockhole reason on designing again and make locking nail and main nail itself can not hug closely completely, cause the broken end still to have fine motion and unstable and lead to the shortcoming that the fracture does not heal up, utilize horizontal locking and main nail hole locking, do benefit to fracture end rectangle stability, it is firm to fix, increase the initial stability of fracture end, not only be favorable to early function exercise, but also be favorable to the early healing of fracture;
(2) the utility model discloses form a central fixed angle device, can disperse the intramedullary nail bearing stress more effectively between each screw and bone surface, effectively solved the high stress and sheltered from the effect, avoided the stress concentration at single bone screw interface to lead to the locking fracture, it is little to have the wound area, operation method is simple and convenient, and fixed for the axle center, can restore to the throne betterly and can the rotation of effective control fracture broken ends, maintain the length of bone, can also carry out early heavy burden, limbs function recovery advantage such as fast.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the utility model at a;
fig. 3 is a schematic structural view of the horizontal locking nail of the present invention.
Reference numbers in the figures:
1-intramedullary nail main nail, 2-transverse locking hole, 3-transverse locking nail, 4-main nail hole, 5-locking internal thread, 6-transverse locking nail main body, 7-self-tapping thread, 8-nail cap, 9-guider and 10-bending section.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to 3, the utility model provides a novel porous locking intramedullary nail, including intramedullary nail main nail 1, be provided with horizontal locking hole 2 on the intramedullary nail main nail 1, horizontal locking hole 2 is inside to be passed horizontal locking nail 3, be provided with a plurality of main nail hole 4 on the intramedullary nail main nail 1, be provided with locking internal thread 5 on the main nail hole 4 inner wall, horizontal locking nail 3 includes horizontal locking nail main part 6, be provided with self tapping screw thread 7 on the horizontal locking nail main part 6, 6 right-hand members of horizontal locking nail main part are provided with nail cap 8.
The utility model discloses a theory of operation does: the novel porous intramedullary nail has reasonable structural design and good biomechanical characteristics, can meet various types of tibial fractures, and is a safe and reliable internal fixation instrument; novel porous locking intramedullary nail references the advantage of locking the steel sheet, combine the effect that has internal fixation support again, the reason of overcoming in the intramedullary nail in the locking nail again and the design of main nail lockhole makes the locking nail can not hug closely completely with main nail itself, it still has the fine motion and the unstable shortcoming that leads to the fracture nonunion to send the broken end, utilize horizontal locking hole 2 and main nail hole 4 locking, do benefit to fracture end rectangle stability, it is fixed firm, increase the initial stability of fracture end, not only be favorable to early function exercise, and be favorable to the early healing of fracture.
A locking nail can be arranged in the main nail hole 4 to be locked with the intramedullary nail main nail 1, so that the sliding of the screw is avoided, and a central fixed angle device is formed. The stress borne by the main intramedullary nail 1 can be effectively dispersed between each screw and the bone surface, the high stress shielding effect is effectively solved, and the locking fracture caused by the stress concentration of a single bone screw interface is avoided.
Wherein, a plurality of main nail holes 4 are arranged in the intramedullary nail main nail 1 for locking, and the main nail holes 4 at different positions are selected for locking according to the fracture type; the transverse locking is a self-tapping locking screw, and the transverse locking nail 3 is beneficial to the locking of the intramedullary nail main nail 1. The novel porous intramedullary nail has unique advantages in the aspects of rotation resistance and gravity resistance, and can replace the interlocking intramedullary nail to a certain extent.
In a preferred embodiment, a guide 9 is connected to the upper end of the intramedullary nail main nail 1.
In a preferred embodiment, the cross locking holes 2 and the main nail holes 4 are staggered.
In a preferred embodiment, the cross locking nail 3 is designed as a self-tapping locking screw structure.
In a preferred embodiment, the intramedullary nail main nail 1 is provided with a bending section 10.
To sum up, the utility model discloses a key feature lies in:
(1) the utility model discloses borrow the advantage of reference locking steel sheet, combine to have the effect of internal fixation support again, overcome in the intramedullary nail locking nail and main nail lockhole reason on designing again and make locking nail and main nail itself can not hug closely completely, cause the broken end still to have fine motion and unstable and lead to the shortcoming that the fracture does not heal up, utilize horizontal locking and main nail hole locking, do benefit to fracture end rectangle stability, it is firm to fix, increase the initial stability of fracture end, not only be favorable to early function exercise, but also be favorable to the early healing of fracture;
(2) the utility model discloses form a central fixed angle device, can disperse the intramedullary nail bearing stress more effectively between each screw and bone surface, effectively solved the high stress and sheltered from the effect, avoided the stress concentration at single bone screw interface to lead to the locking fracture, it is little to have the wound area, operation method is simple and convenient, and fixed for the axle center, can restore to the throne betterly and can the rotation of effective control fracture broken ends, maintain the length of bone, can also carry out early heavy burden, limbs function recovery advantage such as fast.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. A novel porous locking intramedullary nail comprises a main intramedullary nail (1) and is characterized in that: be provided with horizontal locking hole (2) on intramedullary nail main nail (1), horizontal locking hole (2) inside is passed horizontal locking nail (3), be provided with a plurality of main nail hole (4) on intramedullary nail main nail (1), be provided with locking internal thread (5) on main nail hole (4) inner wall, horizontal locking nail (3) are including horizontal locking nail main part (6), be provided with self-tapping screw thread (7) on horizontal locking nail main part (6), horizontal locking nail main part (6) right-hand member is provided with head of a nail (8).
2. The novel porous locking intramedullary nail of claim 1, wherein: the upper end of the intramedullary nail main nail (1) is connected with a guider (9).
3. The novel porous locking intramedullary nail of claim 1, wherein: the transverse locking holes (2) and the main nail holes (4) are arranged in a staggered mode.
4. The novel porous locking intramedullary nail of claim 1, wherein: the transverse locking nail (3) is designed into a self-tapping locking screw structure.
5. The novel porous locking intramedullary nail of claim 1, wherein: the intramedullary nail main nail (1) is provided with a bending section (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120643970.9U CN215129897U (en) | 2021-03-30 | 2021-03-30 | Novel porous locking intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120643970.9U CN215129897U (en) | 2021-03-30 | 2021-03-30 | Novel porous locking intramedullary nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215129897U true CN215129897U (en) | 2021-12-14 |
Family
ID=79354061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120643970.9U Expired - Fee Related CN215129897U (en) | 2021-03-30 | 2021-03-30 | Novel porous locking intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215129897U (en) |
-
2021
- 2021-03-30 CN CN202120643970.9U patent/CN215129897U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204931821U (en) | Bridge joint internal fixation system outside proximal tibia | |
| CN104546100B (en) | Dynamic compression locking plate for treatment of femoral neck fracture | |
| CN108378913A (en) | Improve proximal femoral nail | |
| CN101574280B (en) | Fixing system in locking plate at proximal end of thighbone | |
| CN102551921B (en) | Artificial femoral stem for fracture surgery around hip joint prosthesis | |
| CN202526285U (en) | Double-layer unilateral skeletal external fixator | |
| CN215129897U (en) | Novel porous locking intramedullary nail | |
| CN201755246U (en) | Changeable biological-type proximal femur steel plate | |
| CN201441446U (en) | Internal fixation system for proximal femoral locking plate | |
| CN108309427A (en) | It is a kind of controllably to continue locking compress Medical orthopedic steel plate | |
| CN208838131U (en) | Femur internal fixation system | |
| CN101011290A (en) | Femoral bone tuberosity locking hook plate internal fixation system | |
| CN207492805U (en) | A kind of clinical orthopaedics operation fixing device | |
| CN207012228U (en) | A kind of inner fixing device for fracture of neck of femur | |
| CN206151558U (en) | Intensive pedicle of vertebral arch screw of nail way | |
| CN201356644Y (en) | Static-dynamic alternated intramedullary pin | |
| CN213156368U (en) | Combined screw capable of improving fixing effect of femoral neck fracture of child | |
| CN201040016Y (en) | Point contact locking steel plate | |
| CN210697794U (en) | Rebuild lockplate | |
| CN201005773Y (en) | Femoral bone tuberosity locking hook board internal fixation system | |
| CN204306883U (en) | Humeral intramedullary nail | |
| CN208974080U (en) | The inside and outside double fixing screws of fracture | |
| CN208974076U (en) | The inside and outside double fixed systems of fracture | |
| CN208640865U (en) | Fractured near end of thighbone Medullary fixation device | |
| CN208525018U (en) | Implanted device is fixed in a kind of fracture of neck of femur |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |