CN113598920B - Intramedullary nail - Google Patents
Intramedullary nail Download PDFInfo
- Publication number
- CN113598920B CN113598920B CN202110900915.8A CN202110900915A CN113598920B CN 113598920 B CN113598920 B CN 113598920B CN 202110900915 A CN202110900915 A CN 202110900915A CN 113598920 B CN113598920 B CN 113598920B
- Authority
- CN
- China
- Prior art keywords
- nail
- intramedullary nail
- rod
- shaft
- 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.)
- Active
Links
- 241001079814 Symphyotrichum pilosum Species 0.000 claims abstract description 46
- 235000004224 Typha angustifolia Nutrition 0.000 claims abstract description 46
- 229910001000 nickel titanium Inorganic materials 0.000 claims abstract description 8
- 230000006386 memory function Effects 0.000 claims abstract description 7
- 239000000956 alloy Substances 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 23
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims 1
- 210000001694 thigh bone Anatomy 0.000 description 5
- 210000000988 bone and bone Anatomy 0.000 description 4
- 210000003371 toe Anatomy 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 210000000617 arm Anatomy 0.000 description 1
- 210000003109 clavicle Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary devices, e.g. pins or nails
- A61B17/7233—Intramedullary devices, e.g. pins or nails with special means of locking the nail to the bone
- A61B17/7258—Intramedullary devices, e.g. pins or nails with special means of locking the nail to the bone with laterally expanding parts, e.g. for gripping the bone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary devices, e.g. pins or nails
- A61B17/7233—Intramedullary devices, e.g. pins or nails with special means of locking the nail to the bone
- A61B17/7258—Intramedullary devices, e.g. pins or nails with special means of locking the nail to the bone with laterally expanding parts, e.g. for gripping the bone
- A61B17/7266—Intramedullary devices, e.g. pins or nails with special means of locking the nail to the bone with laterally expanding parts, e.g. for gripping the bone with fingers moving radially outwardly
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention provides an intramedullary nail, which is made of nickel-titanium alloy materials with memory function and superelasticity, and is made into the intramedullary nail with the corresponding shape at present according to the using position, and comprises the intramedullary nail for femoral shaft fracture, wherein the intramedullary nail comprises a nail rod fixing part and a nail rod expandable part, the nail rod expandable part is connected to one end of the nail rod fixing part, strip-shaped cavities are arranged in the nail rod expandable part and the nail rod fixing part, and the strip-shaped cavities are connected between the nail rod fixing part and the nail rod expandable part. The intramedullary nail provided by the invention has memory function, hyperelasticity and strong adaptability, can be correspondingly arranged as the intramedullary nail used for corresponding body parts, can be fixed by utilizing the elasticity of the intramedullary nail, and can be used for aligning two fracture parts together due to the contracted hyperelasticity, so that gaps can be eliminated, and the fracture parts can be healed more easily.
Description
Technical Field
The invention relates to the field of intramedullary nails, in particular to an intramedullary nail.
Background
Intramedullary nails belong to orthopedic internal fixation instruments in medical instruments. The structure is provided with an intramedullary nail rod, a near-end locking screw hole is arranged at the near end of the intramedullary nail rod, a pressure reduction plane is arranged on the surface of the intramedullary nail rod, more than one pressure reduction plane in a long strip shape is arranged on the surface of the intramedullary nail rod, the pressure reduction plane can extend from the near end of the intramedullary nail rod to the far end of the intramedullary nail rod, and a locking screw positioning screw hole and a connecting sleeve positioning groove are arranged at the near end of the intramedullary nail rod.
At present, an intramedullary nail is usually fixed in a bone through a screw rod, and is troublesome to disassemble;
for solving the dismantlement problem, current publication No. CN 110301969A's intramedullary nail sets up the expansion piece through the tip at the nail pole, after installing in the bone, props up the expansion piece through interior pole and hugs closely the inner wall and realize fixing, and it is simple to dismantle, and when only setting up the expansion piece at the tip of intramedullary nail, little with the contact surface of bone, and the expansion piece expands to the outside, has certain angle, and the expansion piece is laminated completely with the very difficult of bone to fixed stability is relatively poor.
Therefore, there is a need for an intramedullary nail that solves the above mentioned problems.
Disclosure of Invention
The invention provides an intramedullary nail, which solves the problem of unstable fixation through a fixing mode of an expansion piece.
In order to solve the technical problems, the intramedullary nail provided by the invention is made of a nickel-titanium alloy material with memory function and superelasticity.
Preferably, the intramedullary nail is made into the intramedullary nail with the corresponding shape at present according to the use position.
Preferably, including the intramedullary nail that is used for femoral shaft fracture, the intramedullary nail includes nail pole fixed part and the expandable portion of nail pole, the expandable portion of nail pole connect in the one end of nail pole fixed part, the bar chamber has all been seted up to the inside of the expandable portion of nail pole and nail pole fixed part, and lies in to connect between the bar chamber of nail pole fixed part and the inside of the expandable portion of nail pole.
Preferably, a plurality of locking mechanisms are arranged in the strip-shaped cavity on the nail rod expandable part and fixedly connected through a first transmission rod, each locking mechanism comprises a connecting block, the circumferential side surface of each connecting block is rotatably connected with a push-pull rod, and one end of each push-pull rod is rotatably connected with a locking block.
Preferably, the surface of the nail rod expandable part is provided with an accommodating groove, the accommodating groove is communicated with the inside of the strip-shaped cavity, and the locking block is positioned inside the accommodating groove.
Preferably, one end threaded connection of nail pole fixed part has the fixed head, the fixed head includes the fixed part, the one end fixedly connected with screw shaft of fixed part, first annular groove has been seted up on the surface of fixed part, the surface of fixed part and the inside cover that is located first annular groove are equipped with the internal thread sleeve pipe.
Preferably, the thread of the internal thread sleeve and the thread of the surface of the threaded shaft are arranged in opposite directions.
Preferably, the end of the nail rod fixing part is provided with an internal thread connecting hole, and the end of the nail rod fixing part is provided with an external thread connecting part.
Preferably, one side of the connecting block is fixedly connected with a second transmission rod, and one end of the second transmission rod is rotatably connected with the threaded shaft.
Preferably, the holding tank is provided with the multiunit, and every group quantity is four.
Preferably, the locking mechanism comprises a connecting shaft, a second annular groove is formed in the upper side of the connecting shaft, an annular sleeve box is sleeved on the surface of the connecting shaft and located inside the second annular groove and can rotate relative to the connecting shaft, a clockwork spring is arranged inside the annular sleeve box, the inner side end of the clockwork spring is fixedly connected with the connecting shaft, and the outer side end of the clockwork spring is fixed to the inner wall of the annular sleeve box;
preferably, the surface of the annular sleeve box is fixedly connected with a limiting block, one side of the annular sleeve box is fixedly connected with a driving handle through a connecting block, one side of the driving handle is provided with a circular groove, the driving block is connected inside the circular groove, the driving block is arranged, the whole driving handle is convenient to rotate, and the annular sleeve box is convenient to rotate;
preferably, the lower end of the connecting shaft is connected with a rectangular shaft, and one end of the second transmission rod is connected with the rectangular shaft.
Preferably, the lockhole assembly comprises a cylindrical hole, the cylindrical hole is formed in the end part of the nail rod fixing part, one side of the inner wall of the cylindrical hole is provided with an insertion hole, and one side of the inner wall of the insertion hole is provided with a limiting groove;
the bottom of the inner wall of the cylindrical hole is provided with a rectangular hole
Four locking mechanism are no less than through the setting, every locking mechanism includes four latch segments, it is fixed to press close to with the thighbone inner wall through the latch segment, increase area of contact, make fixed more stable, and easy operation simultaneously, and the screw shaft that adopts the reverse setting of screw thread to correspond with female screw thread connecting hole and male screw thread connecting portion thread tightening through the fixed head, it is not hard up to avoid the fixed head to appear with the fixed of nail pole fixed part, can be more stable keep the state of latch segment from the beginning, even the device can be more stable fix on the thighbone
Compared with the related art, the intramedullary nail provided by the invention has the following beneficial effects:
the invention provides an intramedullary nail, which is made of nickel-titanium alloy, has memory function, hyperelasticity and strong adaptability, can be correspondingly arranged as the intramedullary nail used for corresponding body parts, can be fixed by utilizing the elasticity of the intramedullary nail, and can be used for aligning two fracture parts together due to the contracted hyperelasticity, so that gaps can be eliminated, and the fracture parts can be healed more easily.
Drawings
FIG. 1 is a schematic structural view of a second embodiment of an intramedullary nail provided in accordance with the present invention;
FIG. 2 is an overall cross-sectional view of a second embodiment of the intramedullary nail provided by the present invention;
FIG. 3 is a schematic view of the shank holding portion shown in FIG. 1;
FIG. 4 is a schematic view of a portion of the retaining head of FIG. 1;
FIG. 5 is a schematic view of the exterior of the retaining head of FIG. 1;
FIG. 6 is a cross-sectional view of the retaining head shown in FIG. 1;
FIG. 7 is a schematic structural view of a third embodiment of an intramedullary nail provided in accordance with the present invention;
FIG. 8 is a schematic view of the locking hole assembly shown in FIG. 7;
FIG. 9 is a schematic structural view of the locking mechanism shown in FIG. 7;
fig. 10 is a schematic structural view of the toe intramedullary nail provided by the present invention.
Reference numbers in the figures:
1. a nail rod fixing part 2, a nail rod expansible part,
3. a locking mechanism 31, a connecting block 32, a push-pull rod 33 and a locking block,
4. a strip-shaped cavity 5, a containing groove 6, a first transmission rod 7, a second transmission rod,
8. a fixing head 81, a fixing part 82, a first annular groove 83, a threaded shaft 84, an internal threaded sleeve,
9. an internal thread connecting hole 10, an external thread connecting part,
11. a locking mechanism 111, a connecting shaft 112, a ring sleeve box 113, a limiting block 114, a driving handle 115, a spring 116, a second ring-shaped groove,
12. the lock hole assembly comprises a lock hole assembly 121, a cylindrical hole 122, jacks 123 and a limiting groove;
a. toe intramedullary nail.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
First embodiment
The intramedullary nail is made of nickel-titanium alloy materials with memory function and superelasticity, the nickel-titanium alloy can be softened when the temperature is low and can be hardened when the temperature is high, for example, the intramedullary nail at the toe part in the attached drawing 10 can be shaped into two angles, three angles, four angles, intervals and widths can be changed, and meanwhile, the intramedullary nail can be fixed by the elasticity of the intramedullary nail;
meanwhile, the intramedullary nail is high in applicability, and is used in different parts of a body by setting different shapes, wherein the shapes are the existing intramedullary nails corresponding to the parts, such as toes, thighbones, clavicles, arms and the like;
after the nickel-titanium alloy is used, due to the shrinking super elasticity, two fracture parts are aligned together, no gap is formed, and the fracture parts are easy to heal.
Compared with the related art, the intramedullary nail provided by the invention has the following beneficial effects:
the intramedullary nail made of nickel-titanium alloy has memory function, hyperelasticity and strong adaptability, can be correspondingly arranged to correspond to the intramedullary nail used by a body part, can be fixed by using the elasticity of the intramedullary nail, and can be used for aligning two fracture parts together due to the contracted hyperelasticity, so that the gap can be eliminated, and the fracture parts can be healed more easily.
Second embodiment
Referring to fig. 1, 2, 3, 4, 5 and 6 in combination, a second embodiment of the present application is directed to another intramedullary nail based on the intramedullary nail provided in the first embodiment of the present application. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.
Specifically, the intramedullary nail provided by the second embodiment of the present application is different in that the intramedullary nail comprises an intramedullary nail for femoral shaft fracture, the intramedullary nail comprises a nail rod fixing portion 1 with a larger diameter and a nail rod expandable portion 2 with a slightly smaller diameter, wherein a strip-shaped cavity 4 is formed inside the whole intramedullary nail, the strip-shaped cavity 4 penetrates through the nail rod fixing portion 1 and the nail rod expandable portion 2, a plurality of locking mechanisms 3 are arranged inside the nail rod expandable portion 2, the number of the locking mechanisms is not less than four, a square block is adopted as a connecting block 31 in each locking mechanism 3, four side faces of each locking mechanism are rotatably connected with a push-pull rod 32, the end of each push-pull rod 32 is rotatably connected with a locking block 33, a plurality of interlocking teeth are preferably formed on the outer side of each locking block 33, and the stability during locking is improved.
At least four groups of accommodating grooves 5 are correspondingly arranged on the surface of the nail rod expandable part 2, four accommodating grooves 5 are correspondingly arranged in each group and correspond to the locking blocks 33, the locking blocks 33 are positioned in the accommodating grooves 5, the locking blocks 33 can be limited through the accommodating grooves, and when the nail rod expandable part is pushed by the push-pull rod 32, the nail rod expandable part can horizontally move;
wherein the end of the nail rod fixing part 1 is connected with an external thread connecting part 10, the diameter of the external thread connecting part 10 is smaller than that of the nail rod fixing part, an internal thread connecting hole is arranged inside the external thread connecting part 10, when the intramedullary nail is fixed, the fixing part 81 is screwed along the pointer, meanwhile, the internal thread sleeve 84 is screwed counterclockwise, the fixing part 81 drives the threaded shaft 83 to be in threaded connection with the internal thread connecting hole 9, meanwhile, the internal thread sleeve 84 is in threaded connection with the external thread connecting part 10, and during screwing, the whole fixing head 8 moves towards the inside of the internal thread connecting hole 9, and by arranging the thread directions on the threaded shaft 83 and the internal thread sleeve 84, the screwing directions of the inner threaded connecting hole 9 and the outer threaded connecting part 10 are opposite, so that the locking mechanism 3 can be more stably limited by the fixing head 8, the loosening condition caused by vibration can be avoided, and the inner threaded connecting hole 9 is communicated with the inside of the strip-shaped cavity 4;
the connecting block 31 in the locking mechanism 3 closest to the nail rod fixing part 1 is rotatably connected with the threaded shaft 83 through the second transmission rod 7, namely the second transmission rod 7 and the threaded shaft 83 can rotate mutually, so that when the threaded shaft 83 rotates, the second transmission rod 7 does not need to rotate at the moment, and meanwhile, when the threaded shaft 83 moves towards the inside of the internal threaded connecting hole 9, the second transmission rod 7 can be pushed, the second transmission rod 7 pushes the connecting block 31 towards the inner side of the strip-shaped cavity 4, the connecting block 31 pushes the locking block 33 through the push-pull rod 32, and the locking block 33 extends outwards through the accommodating groove 5 and is tightly attached to the inner wall of the femur, so that the whole intramedullary nail is fixed;
the internal thread bushing 84 can be driven relative to the fixing part 81, the diameter of the lower side wall of the first annular groove 82 is smaller than that of the upper side arm, an annular convex part is arranged on the upper side of the internal thread bushing, and the annular convex part is positioned inside the first annular groove 82 to form rotating fit;
no less than four locking mechanism 3 through the setting, every locking mechanism 3 includes four latch segments 33, it is fixed to press close to with the thighbone inner wall through latch segments 33, increase area of contact, make fixed more stable, and easy operation simultaneously, and the screw shaft 83 that adopts the reverse setting of screw thread through fixed head 8 corresponds with female screw thread sleeve pipe and female screw thread connecting portion 9 and 10 threaded fixation of external screw thread connecting portion, it is not hard up to avoid fixed head 8 and nail pole fixed part 1's fixed appearance to appear, can be more stable from this moment keep the state of latch segments 33, even the device can be more stable fix on the thighbone.
Third embodiment
Referring to fig. 7, 8 and 9 in combination, a third embodiment of the present application provides another intramedullary nail based on the intramedullary nail provided by the first embodiment of the present application. The third embodiment is only the preferred mode of the second embodiment, and the implementation of the third embodiment does not affect the implementation of the first embodiment alone.
Specifically, the intramedullary nail provided by the third embodiment of the present application is different in that the end of the nail rod fixing portion 1 of the intramedullary nail is connected with a locking mechanism 11 through a lock hole assembly 12;
the locking mechanism 11 comprises a connecting shaft 111, a second annular groove 116 is formed in the upper side of the connecting shaft 111, an annular sleeve 112 is sleeved on the surface of the connecting shaft 111 and inside the second annular groove 116, the annular sleeve 112 can rotate relative to the connecting shaft 111, a clockwork spring 115 is arranged inside the annular sleeve 112, the inner end of the clockwork spring 115 is fixedly connected with the connecting shaft 111, and the outer end of the clockwork spring 115 is fixed to the inner wall of the annular sleeve 112;
the surface of the annular sleeve box 112 is fixedly connected with a limiting block 113, one side of the annular sleeve box 112 is fixedly connected with a driving handle 114 through a connecting block, one side of the driving handle 114 is provided with a circular groove, a driving block is connected inside the circular groove, the driving block is arranged, the whole driving handle 114 is convenient to rotate, and the annular sleeve box 112 is convenient to rotate;
wherein the lower end of the connecting shaft 111 is connected with a rectangular shaft, and one end of the second transmission rod 7 is connected with the rectangular shaft.
The lock hole assembly 12 comprises a cylindrical hole 121, the cylindrical hole 121 is formed in the end of the nail rod fixing part 1, one side of the inner wall of the cylindrical hole 121 is provided with an insertion hole 122, and one side of the inner wall of the insertion hole 122 is provided with a limiting groove 123;
the bottom of the inner wall of the cylindrical hole 121 is provided with a rectangular hole.
When the locking block 33 needs to be pushed out for fixing, the driving handle can be screwed to enable the limiting block 113 to correspond to the jack 122, the annular sleeve box 112 pulls the clockwork spring 115 to shrink at the moment, after the connecting shaft 111 is completely inserted into the cylindrical hole 121, the limiting block 113 corresponds to the limiting groove 123 at the moment, the annular sleeve box 112 is driven to rotate to the original position under the action of the clockwork spring at the moment, the limiting block 113 correspondingly enters the limiting groove 123 to limit the position of the limiting groove 123 at the moment, the operation is simple, and the rectangular shaft is correspondingly inserted into the rectangular hole to limit the axial direction of the connecting shaft;
when the locking block is detached, the driving handle 114 is reversely twisted to enable the limiting block 113 to correspond to the limiting groove 123, and at the moment, the connecting shaft 111 can be pulled outwards, so that the locking block is retracted, and the operation is simple and convenient.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. An intramedullary nail is characterized in that the intramedullary nail is made of nickel-titanium alloy materials with memory function and super elasticity; the intramedullary nail comprises an intramedullary nail for femoral shaft fracture, the intramedullary nail comprises a nail rod fixing part (1) and a nail rod expandable part (2), the nail rod expandable part (2) is connected to one end of the nail rod fixing part (1), strip-shaped cavities (4) are formed in the nail rod expandable part (2) and the nail rod fixing part (1), and the strip-shaped cavities (4) located in the nail rod fixing part (1) and the nail rod expandable part (2) are connected;
a plurality of locking mechanisms (3) are arranged in a strip-shaped cavity (4) on the nail rod expandable part (2), the locking mechanisms (3) are fixedly connected through a first transmission rod (6), each locking mechanism (3) comprises a connecting block (31), the peripheral side surface of each connecting block (31) is rotatably connected with a push-pull rod (32), and one end of each push-pull rod (32) is rotatably connected with a locking block (33);
one side of the connecting block (31) is fixedly connected with a second transmission rod (7);
the end part of the nail rod fixing part (1) is connected with a fixing and locking mechanism (11) through a lock hole component (12);
the fixing and locking mechanism (11) comprises a connecting shaft (111), a second annular groove (116) is formed in the upper side of the connecting shaft (111), an annular sleeve box (112) is sleeved on the surface of the connecting shaft (111) and located inside the second annular groove (116), the annular sleeve box (112) rotates relative to the connecting shaft (111), a clockwork spring (115) is arranged inside the annular sleeve box (112), the inner side end of the clockwork spring (115) is fixedly connected with the connecting shaft (111), and the outer side end of the clockwork spring (115) is fixedly connected with the inner wall of the annular sleeve box (112);
the surface of the annular sleeve box (112) is fixedly connected with a limiting block (113), one side of the annular sleeve box (112) is fixedly connected with a driving handle (114) through a connecting block (31), one side of the driving handle (114) is provided with a circular groove, and a driving block is connected inside the circular groove;
the lower end of the connecting shaft (111) is connected with a rectangular shaft, and one end of the second transmission rod (7) is connected with the rectangular shaft;
the lock hole assembly (12) comprises a cylindrical hole (121), the cylindrical hole (121) is formed in the end portion of the nail rod fixing portion (1), an insertion hole (122) is formed in one side of the inner wall of the cylindrical hole (121), and a limiting groove (123) is formed in one side of the inner wall of the insertion hole (122);
the bottom of the inner wall of the cylindrical hole (121) is provided with a rectangular hole.
2. The intramedullary nail of claim 1, wherein the intramedullary nail is shaped to a current corresponding shape of the intramedullary nail based on a location of use.
3. Intramedullary nail according to claim 1, characterized in that the surface of the shank expandable portion (2) is provided with a receiving groove (5), said receiving groove (5) communicating with the inside of the strip-shaped cavity (4), said locking block (33) being located inside the receiving groove (5).
4. The intramedullary nail according to claim 1, characterized in that a fixing head (8) is screwed to one end of the shank fixing portion (1), the fixing head (8) comprises a fixing portion (81), a threaded shaft (83) is fixedly connected to one end of the fixing portion (81), a first annular groove (82) is opened on the surface of the fixing portion (81), and an internally threaded sleeve (84) is sleeved on the surface of the fixing portion (81) and inside the first annular groove (82).
5. Intramedullary nail according to claim 4, characterized in that the internally threaded sleeve (84) is oppositely threaded to the surface of the threaded shaft (83).
6. Intramedullary nail according to claim 1, characterized in that the end of the shank fixation part (1) is provided with an internally threaded connection hole (9) and the end of the shank fixation part (1) is provided with an externally threaded connection part (10).
7. Intramedullary nail according to claim 5, characterized in that one end of the second transmission rod (7) is rotationally connected with a threaded shaft (83).
8. Intramedullary nail according to claim 3, characterized in that said housing grooves (5) are provided in a plurality of groups, each group being four in number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110900915.8A CN113598920B (en) | 2021-08-06 | 2021-08-06 | Intramedullary nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110900915.8A CN113598920B (en) | 2021-08-06 | 2021-08-06 | Intramedullary nail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113598920A CN113598920A (en) | 2021-11-05 |
| CN113598920B true CN113598920B (en) | 2022-08-05 |
Family
ID=78307404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110900915.8A Active CN113598920B (en) | 2021-08-06 | 2021-08-06 | Intramedullary nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113598920B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2055714U (en) * | 1989-07-21 | 1990-04-11 | 柳吉龙 | Nickel-titanium marmem intramedullary nail for neck of femur |
| EP1582160A1 (en) * | 2004-03-31 | 2005-10-05 | Orthofix International B.V. | Intramedullary nail comprising elements of shape-memory material |
| ATE424153T1 (en) * | 2004-03-31 | 2009-03-15 | Orthofix Srl | INTEGRAL NAIL WITH ELEMENTS MADE OF SHAPE MEMORY MATERIAL |
| US9974581B2 (en) * | 2015-11-20 | 2018-05-22 | Globus Medical, Inc. | Expandable intramedullary systems and methods of using the same |
-
2021
- 2021-08-06 CN CN202110900915.8A patent/CN113598920B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113598920A (en) | 2021-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5931924B2 (en) | Augmentable trochanteric femoral nail | |
| US5100405A (en) | Locking cap for medical implants | |
| US8211156B2 (en) | Osteoporatic screw and expansion sleeve | |
| US3779239A (en) | Connector for fractured bones | |
| AU725703B2 (en) | Intramedullary nail for the osteosynthesis of bone fractures | |
| KR101215012B1 (en) | Bone Anchoring Element | |
| US9814501B2 (en) | Cannulated telescopic femoral neck screw device and related fixation method | |
| EP2083723B1 (en) | Intramedullary nail including stable locking bolts | |
| TWI451856B (en) | Bone anchoring element and method of manufacturing the same | |
| EP0611018A2 (en) | Device for inserting an implant | |
| TW201309258A (en) | Polyaxial bone anchoring device | |
| CN109259898A (en) | Osteotomy section backbone prosthese | |
| CN113598920B (en) | Intramedullary nail | |
| CA2558495C (en) | Bone fixation means | |
| CN105982749B (en) | Dental component and dental installation tool | |
| ITMI20011175A1 (en) | PROXIMAL LOCKING DEVICE FOR A FEMORAL NAIL | |
| KR101934391B1 (en) | Sleeve pin assembly for fixing bone pieces | |
| BR112020006775A2 (en) | self-sealing pin for insertion handle interface | |
| CN113768604A (en) | Universal hollow locking screw | |
| CN209474772U (en) | Spinal Fixation System | |
| CN216090736U (en) | Universal hollow locking screw | |
| CN115607253A (en) | Internal fixing screw for femoral neck | |
| CN208582488U (en) | Bone fracture internal fixing device | |
| CN111248992A (en) | Multifunctional screw | |
| CN216495594U (en) | Tension screw |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |