CN220236992U - Gamma type intramedullary nail with lock for femur - Google Patents
Gamma type intramedullary nail with lock for femur Download PDFInfo
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- CN220236992U CN220236992U CN202321433095.7U CN202321433095U CN220236992U CN 220236992 U CN220236992 U CN 220236992U CN 202321433095 U CN202321433095 U CN 202321433095U CN 220236992 U CN220236992 U CN 220236992U
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- rod
- wall
- fixedly connected
- intramedullary nail
- ejector pin
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- 210000000689 upper leg Anatomy 0.000 title claims description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 12
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 12
- 241001330002 Bambuseae Species 0.000 claims description 12
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 12
- 239000011425 bamboo Substances 0.000 claims description 12
- 230000003028 elevating effect Effects 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 description 5
- 241001079814 Symphyotrichum pilosum Species 0.000 description 4
- 235000004224 Typha angustifolia Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- 241000587161 Gomphocarpus Species 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The utility model discloses a femoral gamma type intramedullary nail with lock, which comprises a main rod, a top rod and a bottom rod, wherein the top rod and the bottom rod are arranged on the top and the bottom outer walls of the main rod; the bottom outer wall of the main rod is provided with a lifting mechanism for adjusting the height of the bottom rod, the bottom outer wall of the ejector rod is provided with a limiting mechanism for fixing the position of the ejector rod, and fixing mechanisms for limiting the ejector rod and the bottom rod are arranged between the ejector rod and the circumferential outer wall of the bottom rod; according to the utility model, under the condition that the position of the main rod is fixed, the inclination angle of the ejector rod can be adjusted, the included angle between the main rod and the ejector rod can be conveniently changed according to the conditions of different patients, and the position of the ejector rod can be limited and fixed through the limiting mechanism, so that the shapes of the main rod and the ejector rod are fixed.
Description
Technical Field
The utility model relates to the technical field of intramedullary nails, in particular to a femur gamma type intramedullary nail with lock.
Background
An intramedullary nail belongs to an orthopedic instrument. The structure is provided with an intramedullary nail rod, a proximal end lock is arranged at the proximal end of the intramedullary nail rod, and a decompression plane is arranged on the surface of the intramedullary nail rod. The surface of the intramedullary nail rod is provided with more than one strip-shaped decompression plane, so that the axial force line of the part can be controlled, the fracture rotation deformity can be prevented, and the fracture risk of the built-in object is reduced.
Through retrieving, the intramedullary nail of patent publication number "CN213940923U" includes nail head, nail body portion and nail afterbody, its characterized in that: the nail head is provided with a primary hole and a secondary hole, two first screws meshed with each other are arranged in the primary hole and the secondary hole, square limiting blocks are arranged on the heads of the first screws in a protruding mode, limiting plates are arranged between the two first screws, square through holes for inserting the two square limiting blocks are formed in the limiting plates, and the limiting plates are fixedly connected with the heads of the first screws through bolts. The intramedullary nail generates stress through the forms of the primary screw and the secondary screw, avoids loosening the screws, and the limit plate and the limit block are matched, so that the self-rotation loosening of the screws is avoided, the stabilizing effect is better, the screws are prevented from loosening and falling off, and the potential safety hazard is avoided.
The technical characteristics have the following defects: because the intramedullary nail is pre-bent before leaving the factory and has a certain radian, a doctor cannot reshape or bend in the using process, but because of the height or the difference of the shapes of patients, the shape of the intramedullary cavity is also different, so that the doctor also needs to expand the marrow cavity to conform to the shape of the intramedullary nail in the actual operation process, the thickness of the cortex is further reduced by expanding the marrow, and the strength of bones is weakened, therefore, the femur gamma type intramedullary nail with lock is needed to be designed to solve the problems.
Disclosure of Invention
The utility model aims to provide a femur gamma type intramedullary nail with lock, which solves the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the femur gamma type intramedullary nail with lock comprises a main rod, and a top rod and a bottom rod which are arranged on the top and the bottom outer walls of the main rod, wherein the outer walls of the two sides of the top of the main rod are fixedly connected with a first clamping plate, the outer walls of the two sides of the bottom of the top rod are fixedly connected with a second clamping plate, and the first clamping plate is hinged with the second clamping plate;
the bottom outer wall of mobile jib is provided with the elevating system who is used for carrying out the height to the sill bar, and the bottom outer wall of ejector pin is provided with the stop gear who is used for fixing the position of ejector pin, all is provided with the fixed establishment who is used for carrying out spacing to ejector pin and sill bar between ejector pin and the circumference outer wall of sill bar.
Preferably, the fixing mechanism comprises a first fixing nail and a second fixing nail, the first fixing nail and the second fixing nail are respectively inserted into the outer circumferential walls of the ejector rod and the bottom rod, and the number of the second fixing nails is two.
Preferably, the stop gear includes a fixed section of thick bamboo, and fixed section of thick bamboo fixed connection is between the relative one side inner wall of first grip block, and a plurality of slots that the equidistance was distributed are opened to the circumference outer wall of a fixed section of thick bamboo, and the bottom outer wall slip grafting of ejector pin has the lifter, the bottom outer wall fixedly connected with bottom plate of lifter, the bottom outer wall fixedly connected with of bottom plate and the picture peg of slot looks adaptation.
Preferably, the both sides outer wall of ejector pin is opened there is logical groove, and leads to the top inner wall fixedly connected with inner rod in groove, and the lifter slides and cup joints in the circumference outer wall of inner rod, and the top outer wall fixedly connected with of lifter cup joints in the reset spring of inner rod circumference outer wall, the equal fixedly connected with pull rod of both sides outer wall of lifter.
Preferably, the limiting grooves are formed in the inner walls of the two ends of the through groove, and limiting blocks matched with the limiting grooves are fixedly connected to the outer walls of the two ends of the lifting rod.
Preferably, the lifting mechanism comprises a threaded rod, the middle position of the top outer wall of the bottom rod is rotationally connected with the rotating disc, the threaded rod is fixedly connected with the top outer wall of the rotating disc, and the threaded rod is rotationally inserted into the bottom outer wall of the main rod through threads.
Preferably, the outer wall of one end of the top of the bottom rod is fixedly connected with a limiting rod, and the limiting rod is slidably inserted into the outer wall of the bottom of the main rod.
Compared with the prior art, the utility model has the beneficial effects that:
in the utility model, when in use, as the ejector rod and the main rod are mutually hinged through the first clamping plate and the second clamping plate, under the condition of fixed position of the main rod, the inclination angle of the ejector rod can be adjusted, the included angle between the main rod and the ejector rod can be conveniently changed according to different conditions of patients, the structure is simple, the operation is convenient, the position of the ejector rod can be limited and fixed through the limiting mechanism, the shapes of the main rod and the ejector rod are fixed, and the lifting mechanism can adjust the whole length of the main rod, so that the lifting mechanism is convenient for patients with different heights to use;
according to the utility model, the positions of the ejector rod and the bottom rod can be fixed through the first fixing nail and the second fixing nail, so that the whole device can be completely fixed in the femur of a patient, and the situation of movement of the device is prevented;
in the utility model, when the rotating disc is twisted by medical staff, the rotating disc can drive the threaded rod to rotate, and the threaded rod stretches out and draws back at the bottom of the main rod, thereby realizing the effect of adjusting the height of the bottom rod and being more convenient to use.
Drawings
Fig. 1 is a schematic view of the overall structure of a femoral gamma-type interlocking intramedullary nail.
Fig. 2 is a schematic view of the return spring structure of the femoral gamma-type locking intramedullary nail.
Fig. 3 is a schematic view of the structure of a rotating rod of a gamma-type locked intramedullary nail for femur.
Fig. 4 is a schematic view of the structure of a fixed barrel of a femoral gamma type locked intramedullary nail.
Fig. 5 is a schematic view of the structure of the insert plate of the femoral gamma-type locking intramedullary nail.
In the figure: 1. a main rod; 2. a push rod; 3. a bottom bar; 4. a lifting rod; 5. a pull rod; 6. a limiting block; 7. a limit groove; 8. a first staple; 9. a return spring; 10. an inner rod; 11. a through groove; 12. a second staple; 13. a rotating disc; 14. a limit rod; 15. a threaded rod; 16. a first clamping plate; 17. a fixed cylinder; 18. a slot; 19. a bottom plate; 20. inserting plate; 21. and a second clamping plate.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1-5, in the embodiment of the utility model, a femoral gamma type intramedullary nail with lock comprises a main rod 1, a push rod 2 and a bottom rod 3 arranged on the top and bottom outer walls of the main rod 1, wherein the outer walls of the two sides of the top of the main rod 1 are fixedly connected with a first clamping plate 16, the outer walls of the two sides of the bottom of the push rod 2 are fixedly connected with a second clamping plate 21, and the first clamping plate 16 is hinged with the second clamping plate 21;
the bottom outer wall of mobile jib 1 is provided with the elevating system who is used for carrying out the height of adjusting bottom bar 3, and the bottom outer wall of ejector pin 2 is provided with the stop gear who is used for carrying out fixing to the position of ejector pin 2, all be provided with between the circumference outer wall of ejector pin 2 and bottom bar 3 and be used for carrying out spacing fixed establishment to ejector pin 2 and bottom bar 3, when using, because be mutually articulated through first grip block 16 and second grip block 21 between ejector pin 2 and the mobile jib 1, consequently under the fixed condition of mobile jib 1, can adjust the inclination of ejector pin 2, the contained angle of mobile jib 1 and ejector pin 2 is conveniently changed according to the condition of different patients, moreover, the steam generator is simple in structure, convenient for operation, and can carry out spacing fixed to the position of ejector pin 2 through the stop gear who sets up, make mobile jib 1 and ejector pin 2's shape fixed, and the elevating system who sets up then can adjust mobile jib 1's overall length, the convenience is used to the patient of different heights.
Wherein, fixed establishment includes first staple 8 and second staple 12, and first staple 8 and second staple 12 peg graft respectively in ejector pin 2 and the circumference outer wall of sill bar 3, and the quantity of second staple 12 is two, through first staple 8 and the second staple 12 that set up, can fix the position of ejector pin 2 and sill bar 3 for whole device can be fixed in patient's femur completely, prevents the condition that the device appears moving.
Wherein, stop gear includes fixed section of thick bamboo 17, and fixed section of thick bamboo 17 fixed connection is between the relative one side inner wall of first grip block 16, a plurality of slots 18 that the circumference outer wall of fixed section of thick bamboo 17 opened equidistance and distributes, and the bottom outer wall slip grafting of ejector pin 2 has lifter 4, the bottom outer wall fixedly connected with bottom plate 19 of lifter 4, the bottom outer wall fixedly connected with of bottom plate 19 and the picture peg 20 of slot 18 looks adaptation, when ejector pin 2 is adjusting to suitable angle, picture peg 20 can peg graft into the fixed section of thick bamboo 17 that has slot 18, thereby realized the quick fixed effect to ejector pin 2, can carry out the lifting to lifter 4 through pull rod 5, make picture peg 20 and fixed section of thick bamboo 17 break away from, thereby conveniently adjust the angle of ejector pin 2, and under reset spring 9's elasticity, picture peg 20 can keep the close contact with fixed section of thick bamboo 17, the stability of ejector pin 2 has been improved.
Wherein, open the both sides outer wall of ejector pin 2 has logical groove 11, and logical groove 11's top inner wall fixedly connected with interior pole 10, lifter 4 sliding sleeve in interior pole 10's circumference outer wall, and lifter 4's top outer wall fixedly connected with cup joints in interior pole 10 circumference outer wall reset spring 9, lifter 4's both sides outer wall equal fixedly connected with pull rod 5.
Wherein, the both ends inner wall of logical groove 11 all opens has spacing groove 7, and the both ends outer wall of lifter 4 all fixedly connected with stopper 6 with spacing groove 7 looks adaptation.
Wherein, elevating system includes threaded rod 15, and the top outer wall intermediate position rotation of sill bar 3 is connected with rolling disc 13, and threaded rod 15 fixed connection is in rolling disc 13's top outer wall, and threaded rod 15 is pegged graft in mobile jib 1's bottom outer wall through the screw thread rotation, and when medical personnel was twisting rolling disc 13, rolling disc 13 can drive threaded rod 15 rotation to make threaded rod 15 flexible in mobile jib 1 bottom, thereby realized the high regulation effect to sill bar 3, more facilitate the use.
The working principle of the utility model is as follows: because the ejector rod 2 and the main rod 1 are mutually hinged through the first clamping plate 16 and the second clamping plate 21, under the condition that the position of the main rod 1 is fixed, the inclination angle of the ejector rod 2 can be adjusted, the included angle between the main rod 1 and the ejector rod 2 is conveniently changed according to the conditions of different patients, when the ejector rod 2 is adjusted to a proper angle, the inserting plate 20 can be inserted into the fixed cylinder 17 with the inserting groove 18, so that the quick fixing effect on the ejector rod 2 is realized, the lifting rod 4 can be lifted through the pull rod 5, the inserting plate 20 is separated from the fixed cylinder 17, the angle of the ejector rod 2 is conveniently adjusted, the inserting plate 20 can be kept in close contact with the fixed cylinder 17 under the elastic force of the reset spring 9, and the stability of the ejector rod 2 is improved, so that the shape of the main rod 1 and the ejector rod 2 is fixed.
Example 2
Referring to fig. 3, unlike embodiment 1, the outer wall of one end of the top of the bottom rod 3 is fixedly connected with a limiting rod 14, and the limiting rod 14 is slidably inserted into the outer wall of the bottom of the main rod 1.
The working principle of the utility model is as follows: when adjusting the height of sill bar 3, gag lever post 14 can carry out spacingly to sill bar 3 for sill bar 3 can not twist along with the rotation of rolling disc 13, thereby conveniently carrying out fixed mounting to second staple 12.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.
Claims (7)
1. The utility model provides a femur gamma type intramedullary nail with lock, includes mobile jib (1) and sets up ejector pin (2) and sill bar (3) in mobile jib (1) top and bottom outer wall, its characterized in that: the outer walls of the two sides of the top of the main rod (1) are fixedly connected with first clamping plates (16), the outer walls of the two sides of the bottom of the ejector rod (2) are fixedly connected with second clamping plates (21), and the first clamping plates (16) are hinged with the second clamping plates (21);
the bottom outer wall of mobile jib (1) is provided with the elevating system who is used for carrying out the height of adjusting bottom rod (3), and the bottom outer wall of ejector pin (2) is provided with the stop gear who is used for carrying out fixing to the position of ejector pin (2), all is provided with the fixed establishment who is used for carrying out spacing to ejector pin (2) and bottom rod (3) between the circumference outer wall of ejector pin (2) and bottom rod (3).
2. The femoral gamma-locked intramedullary nail of claim 1, wherein: the fixing mechanism comprises a first fixing nail (8) and a second fixing nail (12), the first fixing nail (8) and the second fixing nail (12) are respectively inserted into the outer circumferential walls of the ejector rod (2) and the bottom rod (3), and the number of the second fixing nails (12) is two.
3. The femoral gamma-locked intramedullary nail of claim 2, wherein: stop gear includes fixed section of thick bamboo (17), and fixed section of thick bamboo (17) fixed connection is between the relative one side inner wall of first grip block (16), and a plurality of slots (18) that equidistance was distributed are opened to the circumference outer wall of fixed section of thick bamboo (17), and the bottom outer wall slip grafting of ejector pin (2) has lifter (4), the bottom outer wall fixedly connected with bottom plate (19) of lifter (4), the bottom outer wall fixedly connected with of bottom plate (19) and picture peg (20) of slot (18) looks adaptation.
4. A femoral gamma-type locking intramedullary nail according to claim 3, wherein: the both sides outer wall of ejector pin (2) is opened there is logical groove (11), and logical top inner wall fixedly connected with interior pole (10) of groove (11), and lifter (4) sliding sleeve in the circumference outer wall of interior pole (10), and the top outer wall fixedly connected with of lifter (4) cup joints reset spring (9) in interior pole (10) circumference outer wall, the equal fixedly connected with pull rod (5) of both sides outer wall of lifter (4).
5. The femoral gamma-locked intramedullary nail of claim 4, wherein: limiting grooves (7) are formed in the inner walls of the two ends of the through groove (11), and limiting blocks (6) matched with the limiting grooves (7) are fixedly connected to the outer walls of the two ends of the lifting rod (4).
6. The femoral gamma locked intramedullary nail of any one of claims 1-5, wherein: the lifting mechanism comprises a threaded rod (15), a rotating disc (13) is rotatably connected to the middle position of the top outer wall of the bottom rod (3), the threaded rod (15) is fixedly connected to the top outer wall of the rotating disc (13), and the threaded rod (15) is rotatably inserted into the bottom outer wall of the main rod (1) through threads.
7. The femoral gamma-locked intramedullary nail of claim 5, wherein: the outer wall of one end of the top of the bottom rod (3) is fixedly connected with a limiting rod (14), and the limiting rod (14) is slidably inserted into the outer wall of the bottom of the main rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321433095.7U CN220236992U (en) | 2023-06-07 | 2023-06-07 | Gamma type intramedullary nail with lock for femur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321433095.7U CN220236992U (en) | 2023-06-07 | 2023-06-07 | Gamma type intramedullary nail with lock for femur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220236992U true CN220236992U (en) | 2023-12-26 |
Family
ID=89228782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321433095.7U Active CN220236992U (en) | 2023-06-07 | 2023-06-07 | Gamma type intramedullary nail with lock for femur |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220236992U (en) |
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2023
- 2023-06-07 CN CN202321433095.7U patent/CN220236992U/en active Active
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