CN220676098U - Intramedullary fixing device for radius fracture - Google Patents
Intramedullary fixing device for radius fracture Download PDFInfo
- Publication number
- CN220676098U CN220676098U CN202321905149.5U CN202321905149U CN220676098U CN 220676098 U CN220676098 U CN 220676098U CN 202321905149 U CN202321905149 U CN 202321905149U CN 220676098 U CN220676098 U CN 220676098U
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- Prior art keywords
- nail
- lock
- intramedullary
- fixation device
- transverse
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- 206010037802 Radius fracture Diseases 0.000 title claims abstract description 24
- 210000000988 bone and bone Anatomy 0.000 claims description 11
- 230000001054 cortical effect Effects 0.000 claims description 6
- 125000003003 spiro group Chemical group 0.000 claims description 2
- 208000010392 Bone Fractures Diseases 0.000 abstract description 13
- 206010017076 Fracture Diseases 0.000 abstract description 13
- 238000002513 implantation Methods 0.000 abstract description 4
- 230000002980 postoperative effect Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 210000004872 soft tissue Anatomy 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000007794 irritation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000003414 extremity Anatomy 0.000 description 2
- 210000000245 forearm Anatomy 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 230000000474 nursing effect Effects 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 206010065687 Bone loss Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Abstract
The utility model discloses an intramedullary fixing device for radius fracture, which comprises an intramedullary nail, wherein the intramedullary nail comprises a straight rod part and an arc-shaped rod part which are connected with each other, the tail end of the straight rod part is provided with a tapered round blunt part, the tail end of the arc-shaped rod part is provided with a beveled tail part, the arc-shaped rod part is provided with a plurality of first lock holes, each first lock hole is respectively locked with a first transverse lock nail, the axes of the first lock holes are in non-parallel arrangement, the straight rod part is provided with a plurality of second lock holes, each second lock hole is respectively locked with a second transverse lock nail, and the axes of the second lock holes are in non-parallel arrangement. The radial fracture intramedullary fixing device can facilitate implantation in operation and reduce postoperative stress concentration by arranging the tapered round blunt part, and each first transverse locking nail and each second transverse locking nail are fixed at an angle, so that powerful support and fixation are provided for fracture ends, the locking stability is improved, and the fracture parts are prevented from rotating and shifting.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a radius fracture intramedullary fixation device.
Background
At present, a plurality of treatment methods aiming at radius fracture are provided, and the traditional classical treatment methods are as follows: manual reduction and external fixation of gypsum/support; external fixation of external fixation frames, or limited internal fixation of external fixation frames combined application; cutting open the inner fixing of the return palm side/back side access steel plate, etc. However, the methods in the above modes have respective defects, wherein the manual reposition and the external fixation treatment of the plaster/support are easy to cause fixation failure, reposition loss and a plurality of inconveniences of life and nursing caused by intolerable external fixation constraint of the plaster/support; the external fixing frame is used for nursing the external fixing needle eyes, and the needle eyes are infected and loosened, so that the resetting effect is poor, and the living is inconvenient due to the external fixing frame of the affected limb; as for the internal fixation of the incision reduction steel plate, the injury of surrounding tissues caused by the inherent operation incision and the exposure thereof, such as the supinator anterior muscle of the carpal part of the palmar approach, the extensor hallucis longus of the dorsi approach, and the wound scar of the incision in the operation area left after operation and the influence of the rotation function are included. Especially when the steel plate is used for internal fixation treatment, the common and troublesome crushed fracture and bone defect of the cancellous bone and compact bone transitional position are caused, and the length and stability of the distal radius after fracture are maintained, and the stress capability generated during forearm rotation and early forearm flexion and extension rehabilitation training activities is especially limited.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a radius fracture intramedullary fixing device, the tail part of an intramedullary nail is of a cutting structure, so that the intramedullary nail can be prevented from propping against the outer cortex when being implanted, the irritation to the cortex soft tissues is reduced, the tapered round blunt head part is arranged, the implantation in the operation and the post-operation stress concentration are reduced, each first transverse locking nail and each second transverse locking nail are fixed at an angle, the multi-angle collection fixation is formed, the strong support fixation is provided for the fracture end, the locking stability is improved, and the rotation displacement of the fracture part is avoided.
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
the utility model provides a radius fracture intramedullary fixation device, including the intramedullary nail, the intramedullary nail includes interconnect's straight-bar portion and arc pole portion, the end of straight-bar portion is formed with the round blunt end of tapering form, the end of arc pole portion is formed with the chamfer afterbody, a plurality of first lockholes have been seted up on the arc pole portion, lock into a first horizontal locking nail respectively in each first lockhole, and the axis of each first lockhole is non-parallel arrangement, so that each first horizontal locking nail is fixed at an angle, a plurality of second lockholes have been seted up on the straight-bar portion, lock into a second horizontal locking nail respectively in each second lockhole, and the axis of each second lockhole is non-parallel arrangement, so that each second horizontal locking nail is fixed at an angle, the screw has been seted up to the terminal surface department of chamfer afterbody, the spiro union has the tail cap in the screw.
Further, the cutting angle of the end face of the beveled tail is 20-30 degrees.
Further, the cutting angle of the beveled tail end face was 25 °.
Further, a quincuncial hexagonal concave hole 41 is formed at the end of the tail cap.
Further, the first cross lock pin and the second cross lock pin are cortical bone screws.
Further, two first lock holes are formed in the arc-shaped rod part, a first transverse lock pin is locked in the two first lock holes respectively, and an included angle between the two first transverse lock pins is 25-35 degrees.
Further, the included angle between the two first transverse locking nails is 30 degrees.
Further, two second lock holes are formed in the straight rod part, a second transverse lock pin is locked in the two second lock holes respectively, and an included angle between the two second transverse lock pins is 40-50 degrees.
Further, the included angle between the two second transverse locking nails is 45 degrees.
The technical scheme has the following advantages or beneficial effects:
in the radius fracture intramedullary fixing device, the intramedullary nail can be better matched with the radius intramedullary cavity by arranging the arc-shaped rod part with the anatomical radian. And the afterbody cutting structure of intramedullary nail can avoid the intramedullary nail to prop outside cortex when implanting, reduces the irritation to cortex soft tissue, and it is through setting up the round blunt end of tapering form, can make things convenient for the intraoperative implantation and reduce postoperative stress concentration, and each first transverse locking nail and each second transverse locking nail are fixed at an angle, form the multi-angle and collect fixedly, provide powerful support for the fracture end fixedly, be favorable to improving locking stability, avoid fracture department to take place rotary displacement.
Drawings
Fig. 1 is a schematic perspective view of an intramedullary fixation device for radius fractures in accordance with an embodiment of the present utility model.
Fig. 2 is a schematic view of the structure of an intramedullary nail according to an embodiment of the present utility model.
Fig. 3 is an elevation view of an intramedullary fixation device for radius fractures in accordance with an embodiment of the present utility model.
Fig. 4 is a top view of an intramedullary fixation device for radius fractures in accordance with an embodiment of the present utility model.
Fig. 5 is a bottom view of an intramedullary fixation device for radius fractures in accordance with an embodiment of the present utility model.
Description of the reference numerals:
1. intramedullary nail, 2, first horizontal locking nail, 3, second horizontal locking nail, 4, tail cap, 11, straight rod, 12, arc rod, 13, round blunt end, 14, chamfer tail, 15, first lockhole, 16, second lockhole, 41, plum blossom inner hexagonal shrinkage pool.
Detailed Description
The utility model is further described below with reference to the drawings and examples.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Referring to fig. 1 to 5, an embodiment of the present utility model provides an intramedullary fixing device for radius fracture, comprising an intramedullary nail 1, wherein the intramedullary nail 1 comprises a straight rod 11 and an arc rod 12 which are connected with each other, a tapered round blunt end 13 is formed at the end of the straight rod 11, a beveled tail 14 is formed at the end of the arc rod 12, a plurality of first lock holes 15 are formed on the arc rod 12, each first lock hole 15 is respectively locked into a first transverse lock nail 2, the axes of each first lock hole 15 are in non-parallel arrangement, so that each first transverse lock nail 2 is fixed at an angle, a plurality of second lock holes 16 are formed on the straight rod 11, each second lock hole 16 is respectively locked into a second transverse lock nail 3, the axes of each second lock hole 16 are in non-parallel arrangement, so that each second transverse lock nail 3 is fixed at an angle, a screw hole is formed at the end face of the beveled tail 14, and a tail cap 4 is screwed into the screw hole. It will be appreciated that the intramedullary fixation device for radius fractures of the present embodiment may be minimally invasive via the radius stem approach, wherein the intramedullary nail 1 may better fit the radius intramedullary cavity by providing an arcuate stem 12 of anatomical curvature. The tail of the intramedullary nail 1 is arranged to be of a cutting structure in a beveling mode, so that the outer cortex can be prevented from being propped up when the intramedullary nail is implanted, the irritation to the cortex soft tissue is reduced, the tapered round blunt head 13 is arranged, the implantation in the operation and the reduction of postoperative stress concentration can be facilitated, and furthermore, each first transverse locking nail 2 and each second transverse locking nail 3 are fixed at an angle to form multi-angle collection fixation, so that strong supporting fixation is provided for fracture ends, the locking stability is improved, and the rotation displacement of fracture parts is avoided. The intramedullary fixing device for the radius fracture can maintain the anatomic reduction of the fracture block and the original anatomic length of the radius, form reliable and effective fixation, avoid the volume requirement of steel plate screw internal fixation on the tissues of an operation area, provide a good bone grafting space for local fracture, bone defect and bone loss, reduce the operation time and be more beneficial to early functional rehabilitation exercise of the affected limbs after operation.
Referring to fig. 3, in one preferred embodiment, the chamfer end surface of the tail 14 is cut at an angle of 20 ° to 30 °. In this embodiment, the cutting angle of the end face of the beveled tail 14 is preferably 25 °.
Referring to fig. 1, in a preferred embodiment, a quincuncial hexagonal recess 41 is formed at the end of the tail cap 4. The tail cap 4 is of an M4 thread structure. It will be appreciated that in this embodiment, by forming the quincuncial hexagonal recess 41 at the end of the tail cap 4, the connection device can be conveniently screwed in, while the design of the tail cap 4 can avoid soft tissue from growing into the screw hole of the beveled tail 14, which is convenient for the removal of the intra-operative plant.
Referring to fig. 1, in a preferred embodiment, the first and second cross-lock nails 2 and 3 are cortical bone screws. The diameters of the first transverse locking nail 2 and the second transverse locking nail 3 can be 2.7mm, the lengths of the first transverse locking nail and the second transverse locking nail are 10-30 mm, the transverse locking nails are designed by adopting cortical bone threads, the cortical bone screws are dense in threads, the threads are shallower, and the screw threads can be stably fixed to cortical bone.
Referring to fig. 1, fig. 4 and fig. 5, in a preferred embodiment, two first lock holes 15 are formed in the arc-shaped rod portion 12, a first transverse locking nail 2 is locked in each of the two first lock holes 15, and an included angle between the two first transverse locking nails 2 is 25 ° to 35 °. In this embodiment, the angle between the two first cross lock nails 2 is preferably 30 °. The straight rod part 11 is provided with two second lock holes 16, a second transverse locking nail 3 is locked in the two second lock holes 16 respectively, and the included angle between the two second transverse locking nails 3 is 40-50 degrees. In this embodiment, the angle between the two second cross lock nails 3 is preferably 45 °.
The embodiments are merely illustrative of the technical solution of the present utility model, and not limiting thereof; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and therefore all other embodiments obtained by those skilled in the art without making creative efforts are intended to fall within the protection scope of the present utility model.
Claims (9)
1. An intramedullary fixation device for radius fracture, which is characterized in that: including intramedullary nail (1), intramedullary nail (1) includes interconnect's straight-bar portion (11) and arc pole portion (12), the end of straight-bar portion (11) is formed with tapered round blunt end (13), the end of arc pole portion (12) is formed with chamfer afterbody (14), a plurality of first lockholes (15) have been seted up on arc pole portion (12), lock into a first horizontal locking nail (2) respectively in each first lockhole (15), and the axis of each first lockhole (15) is non-parallel arrangement, so that each first horizontal locking nail (2) is fixed at an angle, a plurality of second lockholes (16) have been seted up on straight-bar portion (11), lock into a second horizontal locking nail (3) respectively in each second lockhole (16), and the axis of each second lockhole (16) is non-parallel arrangement, so that each second horizontal locking nail (3) are fixed at an angle, the screw has been seted up in the terminal surface department of chamfer afterbody (14), the spiro union has tail cap (4).
2. The radius fracture intramedullary fixation device of claim 1, wherein: the cutting angle of the end face of the chamfer tail part (14) is 20-30 degrees.
3. The radius fracture intramedullary fixation device of claim 2, wherein: the cutting angle of the end face of the chamfer tail (14) is 25 degrees.
4. The radius fracture intramedullary fixation device of claim 1, wherein: the end part of the tail cap (4) is provided with a plum blossom inner hexagonal concave hole (41).
5. The radius fracture intramedullary fixation device of claim 2, wherein: the first transverse locking nail (2) and the second transverse locking nail (3) are cortical bone screws.
6. An intramedullary fixation device for radius fractures according to any one of claims 1 to 5, wherein: two first lock holes (15) are formed in the arc-shaped rod portion (12), a first transverse locking nail (2) is locked in the two first lock holes (15) respectively, and an included angle between the two first transverse locking nails (2) is 25-35 degrees.
7. The radius fracture intramedullary fixation device of claim 1, wherein: the included angle between the two first transverse locking nails (2) is 30 degrees.
8. An intramedullary fixation device for radius fractures according to any one of claims 1 to 5, wherein: two second lock holes (16) are formed in the straight rod part (11), a second transverse locking nail (3) is respectively locked in the two second lock holes (16), and an included angle between the two second transverse locking nails (3) is 40-50 degrees.
9. The radius fracture intramedullary fixation device of claim 7, wherein: the included angle between the two second transverse locking nails (3) is 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321905149.5U CN220676098U (en) | 2023-07-19 | 2023-07-19 | Intramedullary fixing device for radius fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321905149.5U CN220676098U (en) | 2023-07-19 | 2023-07-19 | Intramedullary fixing device for radius fracture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220676098U true CN220676098U (en) | 2024-03-29 |
Family
ID=90372778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321905149.5U Active CN220676098U (en) | 2023-07-19 | 2023-07-19 | Intramedullary fixing device for radius fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220676098U (en) |
-
2023
- 2023-07-19 CN CN202321905149.5U patent/CN220676098U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |