CN217853254U - Elastic intramedullary nail with pressurizing anti-rotation function - Google Patents
Elastic intramedullary nail with pressurizing anti-rotation function Download PDFInfo
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- CN217853254U CN217853254U CN202221494667.8U CN202221494667U CN217853254U CN 217853254 U CN217853254 U CN 217853254U CN 202221494667 U CN202221494667 U CN 202221494667U CN 217853254 U CN217853254 U CN 217853254U
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- intramedullary nail
- rotation
- hole
- bone
- elastic
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- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 210000000988 bone and bone Anatomy 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 5
- 230000035876 healing Effects 0.000 abstract description 5
- 230000000399 orthopedic effect Effects 0.000 abstract description 4
- 208000010392 Bone Fractures Diseases 0.000 description 10
- 206010017076 Fracture Diseases 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 208000024779 Comminuted Fractures Diseases 0.000 description 1
- 206010061599 Lower limb fracture Diseases 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000002758 humerus Anatomy 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 230000036244 malformation Effects 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
- 210000004872 soft tissue Anatomy 0.000 description 1
- 210000002303 tibia Anatomy 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
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Abstract
The utility model discloses an elastic intramedullary nail with pressurization anti-rotation function, relating to the technical field of orthopedic medical instruments. The utility model comprises an intramedullary nail, wherein the outer side surface of the intramedullary nail is provided with two grooves which are oppositely opened, the inner part of the intramedullary nail is penetrated with a fixed hole, and the inner thread of the fixed hole is connected with an anti-rotation component. The utility model discloses an anti-rotation part's partial structure is fixed connection and sliding connection in the fixed orifices, makes the intramedullary nail resist the rotation force effect stronger when having better axial stability, and has guaranteed the zonulae occludens on fracture end surface, has avoided the intramedullary nail to rotate in patient's bone and the wearing and tearing bone to bring for patient extra painful the while has increased the healing speed of bone.
Description
Technical Field
The utility model relates to the technical field of orthopedic medical instruments, in particular to an elastic intramedullary nail with a pressurizing and anti-rotating function.
Background
In orthopedic treatment, for comminuted fractures of metaphysis of long bones such as distal femur, proximal tibia and proximal humerus, clinicians often choose unilateral or bilateral steel plates for external fixation, but the method needs to strip most of soft tissues, has large wound and large bleeding amount, and is often accompanied by complications such as infection, non-healing and malformation healing. Because the steel plate is fixed with concentrated stress, the steel plate is easy to loosen and even break, and then the steel plate is aligned, and angular deformity and rotational deformity caused by poor alignment are generated. Besides the fixation of the steel plate, the intramedullary nail fixation is also a treatment means widely used in clinic, the intramedullary nail has unique superiority when being used for treating the lower limb backbone fracture, and the fracture end can be pressurized under the action of the gravity of the human body at the vertical position, so that the defect of untight contact of the fracture end possibly existing in the intramedullary nail fixation is overcome. Intramedullary nails are therefore also one of the main choices of clinicians in the current treatment of lower limb fractures.
The currently used elastic intramedullary nail has better axial stability, but the anti-rotating force effect is weaker, so that the intramedullary nail is not firmly fixed, the phenomenon of rotating and wearing the bone of a patient can occur, extra pain is brought to the patient, and the applicability is not strong.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: in order to solve the above problems in the background art, the present invention provides an elastic intramedullary nail with a compression anti-rotation function.
The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:
the utility model provides an elasticity intramedullary nail with pressurization anti-rotation function, includes the intramedullary nail, the lateral surface of intramedullary nail is provided with two recesses relatively, the inside of intramedullary nail is run through there is the fixed orifices, the internal thread of fixed orifices is connected with anti-rotation part.
Furthermore, the bottom of the intramedullary nail is fixedly connected with a tail part of the intramedullary nail, the outer side of the tail part of the intramedullary nail is in threaded connection with a second intramedullary nail, the tail part of the intramedullary nail and the second intramedullary nail are combined into a Y shape, and the groove extends from the outer surface of the intramedullary nail to the outer side of the tail part of the intramedullary nail.
Furthermore, the fixing hole comprises an elliptical hole and a round hole, the elliptical hole and the round hole vertically penetrate through the intramedullary nail between the grooves on the two sides, and the elliptical hole and the round hole are respectively located at the two ends of the fracture point.
Further, anti-rotation part is including threaded rod, connecting plate, slide bar, spout, spacing groove, stopper, threaded rod threaded connection round hole, one side of threaded rod is rotated and is connected with the one end of connecting plate, the spout has been seted up to the other end of connecting plate, the inside of connecting plate is located spout both sides edge and has all seted up the spacing groove perpendicularly, the inside sliding connection of spout has the slide bar, the slide bar is located the equal fixedly connected with stopper in surface of spacing inslot portion.
Further, the sliding rod is horizontally and vertically connected with the inside of the elliptical hole in a sliding mode.
The utility model has the advantages as follows:
the utility model discloses an anti-rotation part's partial structure is fixed connection and sliding connection in the fixed orifices, makes the intramedullary nail resist the rotation force effect stronger when having better axial stability, and has guaranteed the zonulae occludens on fracture end surface, has avoided the intramedullary nail to rotate in patient's bone and the wearing and tearing bone to bring for patient extra painful the while has increased the healing speed of bone.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is a top view of the intramedullary nail of the present invention;
FIG. 3 is a partial structure diagram of the intramedullary nail of the present invention;
FIG. 4 is a view showing the fixing holes of the present invention;
fig. 5 is a view showing a part of the anti-rotation member of the present invention.
Reference numerals: 1. intramedullary nails; 2. the tail part of the intramedullary nail; 3. a second intramedullary nail; 4. a groove; 5. a fixing hole; 501. an elliptical hole; 502. a circular hole; 6. an anti-rotation member; 601. a threaded rod; 602. a connecting plate; 603. a slide bar; 604. a chute; 605. a limiting groove; 606. and a limiting block.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention will be combined below to clearly and completely describe the technical solution in the embodiments of the present invention.
As shown in fig. 1-5, an elastic intramedullary nail with a pressurizing anti-rotation function comprises an intramedullary nail 1, wherein two grooves 4 are oppositely arranged on the outer side surface of the intramedullary nail 1, the grooves 4 can play a certain position limiting role when the intramedullary nail 1 is installed in the intramedullary nail through the arranged grooves 4, the intramedullary nail 1 is fixed by matching with other structures, a fixing hole 5 penetrates through the inner part of the intramedullary nail 1, an anti-rotation component 6 is connected to the inner thread of the fixing hole 5, the inner structure of the anti-rotation component 6 slides in the fixing hole 5, and the gravity action of a human body at an upright position can pressurize a fractured end, so that the anti-rotation component 6 can slightly move down the fractured bone at the upper end of a fractured point of the bone under the influence of gravity while preventing the rotation of the intramedullary nail 1 and tightly connect the fractured bone surface at the lower end, the intramedullary nail 1 has good axial stability and strong anti-rotation force action, and the phenomenon that the intramedullary nail 1 rotates in the bone of a patient to wear the bone to bring extra pain to the patient is avoided.
As shown in the figures, in some embodiments, the bottom of the intramedullary nail 1 is fixedly connected with an intramedullary nail tail 2, the outer side of the intramedullary nail tail 2 is in threaded connection with a second intramedullary nail 3, the intramedullary nail 1, the intramedullary nail tail 2 and the second intramedullary nail 3 are combined into a Y shape, and the groove 4 extends from the outer surface of the intramedullary nail 1 to the outer side of the intramedullary nail tail 2, specifically: the intramedullary nail 1 is fixed inside the bone through the second intramedullary nail 3 which is connected with the tail part 2 of the intramedullary nail in a threaded manner, and the inserted position of the second intramedullary nail 3 is usually positioned at the joint of the bone, so that the threaded connection position of the second intramedullary nail 3 can be changed according to the specific injured position of a patient in actual use.
As shown, in some embodiments, the fixing holes 5 include an elliptical hole 501 and a circular hole 502, the elliptical hole 501 and the circular hole 502 vertically penetrate the intramedullary nail 1 between the grooves 4 on both sides, and the elliptical hole 501 and the circular hole 502 are respectively located at both ends of the fracture point, specifically: by arranging the elliptical holes 501 and the circular holes 502 at both ends of the fracture point, the anti-rotation component 6 can jointly connect and fix the upper broken bone and the lower broken bone when connecting, thereby improving the anti-rotation effect of the intramedullary nail 1.
As shown in the figure, in some embodiments, anti-rotation component 6 includes threaded rod 601, connecting plate 602, slide bar 603, spout 604, spacing groove 605, stopper 606, threaded rod 601 threaded connection round hole 502, one side of threaded rod 601 is rotated and is connected with the one end of connecting plate 602, spout 604 has been seted up to the other end of connecting plate 602, the inside of connecting plate 602 is located spout 604 both sides edge and has all seted up spacing groove 605 perpendicularly, the inside sliding connection of spout 604 has slide bar 603, slide bar 603 is located the equal fixedly connected with stopper 606 in surface of spacing groove 605 inside, and is specific: after insertion of the intramedullary nail 1 inside the bone, a hole is drilled from the outside of the bone and the threaded rod 601 is screwed into the circular hole 502. Meanwhile, the connecting plate 602 and the sliding rod 603 move together with the rotation of the threaded rod 601, at the moment, the sliding rod 603 can also enter the inside of the elliptical hole 501, when a person stands upright, the gravity can exert a pressurizing effect on the fractured end, the fractured bone at the upper end can make the fractured end contact more tightly because of the downward slight drop under the influence of gravity, meanwhile, the threaded rod 601 and the sliding rod 603 are respectively fixed on the fractured bones at the two sides of the fractured end, the bone position is fixed through the connection of the connecting plate 602, the phenomenon that the bone rotates to bring extra pain to the patient is avoided, the connecting plate 602 is only similar to the threaded rod 601 and the sliding rod 602 in size (the size of a common orthopedic fixing screw), the wound area of the connecting plate 602 is smaller, and the phenomenon that the wound is easy to infect in a large area is avoided.
As shown, in some embodiments, the sliding rod 603 horizontally and vertically slides inside the elliptical hole 501, specifically: the sliding rod 603 horizontally slides the elliptical hole 501, so that the sliding rod 603 can move simultaneously through the connection of the connecting plate 602 when the threaded rod 601 rotates, the sliding rod 603 vertically slides the elliptical hole 501, the broken bone at the upper end can slightly fall while the person is fixed in the bone direction when standing upright, the contact of the fractured end is tighter, and the healing speed of the bone is increased.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The elastic intramedullary nail with the pressurizing and anti-rotating functions comprises an intramedullary nail (1) and is characterized in that two grooves (4) are oppositely formed in the outer side surface of the intramedullary nail (1), a fixing hole (5) penetrates through the inner portion of the intramedullary nail (1), and an anti-rotating component (6) is connected to the inner thread of the fixing hole (5).
2. The elastic intramedullary nail with the pressurizing anti-rotation function is characterized in that an intramedullary nail tail (2) is fixedly connected to the bottom of the intramedullary nail (1), a second intramedullary nail (3) is screwed on the outer side of the intramedullary nail tail (2), the intramedullary nail (1), the intramedullary nail tail (2) and the second intramedullary nail (3) are combined into a Y shape, and the groove (4) extends from the outer surface of the intramedullary nail (1) to the outer side of the intramedullary nail tail (2).
3. The elastic intramedullary nail with the function of compression and anti-rotation according to claim 2, characterized in that the fixation holes (5) comprise an elliptical hole (501) and a circular hole (502), the elliptical hole (501) and the circular hole (502) vertically penetrate the intramedullary nail (1) between the grooves (4) at the two sides, and the elliptical hole (501) and the circular hole (502) are respectively located at the two ends of the fracture point.
4. The elastic intramedullary nail with the pressurizing and anti-rotation function according to claim 3, wherein the anti-rotation component (6) comprises a threaded rod (601), a connecting plate (602), a sliding rod (603), a sliding groove (604), a limiting groove (605) and a limiting block (606), the threaded rod (601) is in threaded connection with the round hole (502), one side of the threaded rod (601) is rotatably connected with one end of the connecting plate (602), the sliding groove (604) is formed in the other end of the connecting plate (602), the limiting grooves (605) are vertically formed in the connecting plate (602) and are positioned at two side edges of the sliding groove (604), the sliding rod (603) is slidably connected with the sliding rod (603), and the limiting block (606) is fixedly connected to the surface of the sliding rod (603) positioned in the limiting groove (605).
5. Elastic intramedullary nail with compression anti-rotation function according to claim 4 characterized in that said sliding rod (603) is horizontally and vertically slidingly connected to the inside of the oblong hole (501).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221494667.8U CN217853254U (en) | 2022-06-15 | 2022-06-15 | Elastic intramedullary nail with pressurizing anti-rotation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221494667.8U CN217853254U (en) | 2022-06-15 | 2022-06-15 | Elastic intramedullary nail with pressurizing anti-rotation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217853254U true CN217853254U (en) | 2022-11-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221494667.8U Expired - Fee Related CN217853254U (en) | 2022-06-15 | 2022-06-15 | Elastic intramedullary nail with pressurizing anti-rotation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217853254U (en) |
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2022
- 2022-06-15 CN CN202221494667.8U patent/CN217853254U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221122 |