CN221770227U - An intramedullary nail for fixing rib fractures - Google Patents
An intramedullary nail for fixing rib fractures Download PDFInfo
- Publication number
- CN221770227U CN221770227U CN202322788751.1U CN202322788751U CN221770227U CN 221770227 U CN221770227 U CN 221770227U CN 202322788751 U CN202322788751 U CN 202322788751U CN 221770227 U CN221770227 U CN 221770227U
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- intramedullary nail
- side surfaces
- fixing
- fixing portion
- utility
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- 208000027790 Rib fracture Diseases 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims 1
- 210000000988 bone and bone Anatomy 0.000 description 9
- 238000002513 implantation Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000008733 trauma Effects 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 229920000747 poly(lactic acid) Polymers 0.000 description 2
- 239000004626 polylactic acid Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 206010016747 Flail chest Diseases 0.000 description 1
- 208000006735 Periostitis Diseases 0.000 description 1
- 208000004550 Postoperative Pain Diseases 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 210000001937 intercostal nerve Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 210000003460 periosteum Anatomy 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
Abstract
本实用新型公开了一种用于肋骨骨折固定的髓内钉，包括：固定部和两个导向部，两个所述导向部分别设置在所述固定部的两端；所述导向部的一端为尖锐锥形，另一端与所述固定部连接；所述导向部是棱柱状，具有多个侧面，且其中至少一个所述侧面为凹陷弧面，至少一个所述侧面设置有倒刺。本实用新型的髓内钉可以更方便地植入肋骨的髓腔，且固定牢固，不易发生移位或者翻转。
The utility model discloses an intramedullary nail for fixing rib fractures, comprising: a fixing part and two guide parts, the two guide parts are respectively arranged at two ends of the fixing part; one end of the guide part is a sharp cone, and the other end is connected to the fixing part; the guide part is prism-shaped, has multiple side surfaces, and at least one of the side surfaces is a concave arc surface, and at least one of the side surfaces is provided with barbs. The intramedullary nail of the utility model can be more conveniently implanted into the medullary cavity of the rib, and is firmly fixed and not easily displaced or turned over.
Description
Technical Field
The utility model belongs to the technical field of medical appliances, and particularly relates to an intramedullary nail for rib fracture fixation.
Background
Rib fractures are the most common type of trauma in chest trauma, accounting for over 60% of chest trauma. There are many methods for rib fracture treatment, and there are two main types of conservative treatment and surgical treatment. For rib fracture with unsatisfactory rib alignment, especially for flail chest patients who do not undergo anatomic reduction, intra-operative fixation is often required.
At present, various methods for fixing rib fracture in operation are available, such as Kirschner wire internal fixation, steel wires, ceramic nails, rib steel plates, steel wire binding fixation, memory alloy embracing device rib fixation, absorbable rib nail internal fixation and the like. Wherein, the absorbable intramedullary nail internal fixation treatment rib fracture is a method with small damage and no need of secondary operation extraction, which is widely accepted by clinicians.
The current intramedullary nails commonly used in clinic have the problems of inadequate fixation and easy displacement, and the broken ends of bones are often reinforced by sutures, so that the blood supply of periosteum is influenced, the healing of fracture is influenced, intercostal nerves positioned at the lower edges of ribs are pressed, and postoperative pain is caused. Meanwhile, since the intramedullary cavity of the rib is not a completely hollow structure unlike other tubular bones, and the intramedullary cavity is approximately honeycomb-shaped and is filled with a large amount of cancellous bone, currently used intramedullary nails generally need to drill a bone tunnel with the same diameter as the implant at the intended implantation site according to the diameter of the implant, which increases the complexity of the operation.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide an intramedullary nail which is convenient for implantation, firm and stable after implantation, and difficult for rib fracture fixation of displacement or turnover.
Disclosure of utility model
The utility model provides an intramedullary nail for rib fracture fixation, which can be implanted into a marrow cavity of a rib more conveniently, is firm in fixation and is not easy to shift or turn over.
In order to solve the technical problems, the technical scheme provided by the utility model is as follows: an intramedullary nail for rib fracture fixation, comprising: the fixing part and the two guide parts are respectively arranged at two ends of the fixing part; one end of the guide part is in a sharp cone shape, and the other end of the guide part is connected with the fixing part; the guide part is prismatic and provided with a plurality of side surfaces, at least one side surface is a concave cambered surface, and at least one side surface is provided with barbs.
Further, the barbs are arranged at two ends of the fixing part, and the barbs at two ends of the fixing part are inclined towards opposite directions respectively.
Further, the fixing portion is in a quadrangular shape and is provided with four side faces, wherein two side faces parallel to each other are provided with the barbs, and the other two side faces are concave cambered surfaces.
Further, the thickness of the fixing part is 1-3mm.
Further, the fixing portion is a triangular prism and is provided with three side faces, wherein one side face is provided with the barbs, and the other two side faces are concave cambered surfaces.
Further, a plurality of through holes are formed in the fixing portion.
Further, the intramedullary nail is made of a high molecular absorbable material.
Further, in the fixed state, the intramedullary nail is curved in an arc shape in cross section.
The utility model has the beneficial effects that: the intramedullary nail for rib fracture fixation has the advantages that the two ends of the intramedullary nail are provided with the sharp conical structures, so that the intramedullary nail can be easily implanted into a rib marrow cavity filled with cancellous bone, and the damage caused by drilling a bone tunnel is avoided; meanwhile, the prismatic structure, the lateral depressions and the barbs of the intramedullary nail can prevent the intramedullary nail from shifting or turning over in the intramedullary cavity; the intramedullary nail is made of polylactic acid material, and can be molded under the heating condition, so that the intramedullary nail can be attached to the shape of the ribs, and is suitable for the ribs of different human bodies.
Drawings
FIG. 1 is an overall block diagram of an intramedullary nail according to a first embodiment of the present utility model;
FIG. 2 is a side view of an intramedullary nail according to a first embodiment of the present utility model;
FIG. 3 is a side view of an intramedullary nail according to a first embodiment of the present utility model;
FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 3 of a first embodiment of the present utility model;
FIG. 5 is a block diagram of the intramedullary nail of the first embodiment of the present utility model after implantation into a rib;
FIG. 6 is a top view of a second embodiment of the intramedullary nail of the present utility model;
FIG. 7 is a block diagram of an intramedullary nail according to a third embodiment of the present utility model;
FIG. 8 is a top view of a third embodiment of an intramedullary nail of the present utility model;
fig. 9 is a cross-sectional view taken along A-A in fig. 8 of a first embodiment of the present utility model.
The reference numerals include:
110-fixing portion 120-guiding portion 111-barb
112-Through hole 113-concave cambered surface
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The present utility model provides an intramedullary nail for rib fracture fixation, as shown in fig. 1, which includes two guide portions 120 and one fixation portion 110, the two guide portions 120 being respectively disposed at both ends of the fixation portion 110. One end of the guide portion 120 is sharply tapered, and the other end is connected to the fixing portion 110. The sharp taper may penetrate cancellous bone within the intramedullary canal and implant at a desired location. The guide portion 120 and the fixing portion 110 are integrally formed, the fixing portion 110 is prismatic, has a thickness of 1-3 mm, and has a plurality of side surfaces, at least two side surfaces are concave cambered surfaces 113, at least one side surface is provided with a barb 111, and the structures of the concave cambered surfaces 113 and the barb 111 can prevent the intramedullary nail from shifting and overturning left and right in the intramedullary cavity.
In the first embodiment of the present utility model, as shown in fig. 1 to 4, in this embodiment, two ends of the fixing portion 110 are respectively connected to the guiding portion 120, and the cross section of the guiding portion 120 at the connection is the largest. The fixing portion 110 has a relatively flat quadrangular prism shape having 4 sides, wherein the side area having a larger area is 3 times or more the side area having a smaller area. Two parallel sides with larger areas are close to two ends of the guide part 120 and provided with barbs 111, the barbs 111 at the left end and the right end are respectively inclined towards opposite directions, and the other two sides with smaller areas are in the shape of concave cambered surfaces 113, so that the intramedullary nail can be prevented from moving left and right in the intramedullary cavity by the structure in the embodiment.
In the present embodiment, the thickness of the fixing portion 110 is 1.5mm. The intramedullary nail is made of polylactic acid material, and the state before use is shown in figure 2. In clinical use, the intramedullary nail may be hot-water bathed and then shaped into a curve to match the fractured rib (as shown in fig. 5). In the fixed state, the intramedullary nail is curved in an arc shape in the transverse section.
A second embodiment of the present utility model is shown in fig. 6, and the intramedullary nail structure of this embodiment is substantially the same as that of the first embodiment, except that a plurality of through holes 112 are provided in the middle of the fixing portion 110. After the rib is implanted, as the fracture heals, newly grown cancellous bone grows into the through hole 112 to anchor the intramedullary nail.
The third embodiment of the present utility model is shown in fig. 7-9, and the intramedullary nail structure of this embodiment is substantially the same as that of the first embodiment, except that the fixing portion 110 in this embodiment is a triangular prism shape, and has three sides, wherein one side is provided with barbs 111 near two ends of the guiding portion 120, and the other two sides are concave cambered surfaces 113. The embodiment can also have the effect of penetrating cancellous bone and preventing the intramedullary nail from overturning or moving in the rib.
The foregoing is merely exemplary of the present utility model, and many variations may be made in the specific embodiments and application scope of the utility model by those skilled in the art based on the spirit of the utility model, as long as the variations do not depart from the gist of the utility model.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322788751.1U CN221770227U (en) | 2023-10-17 | 2023-10-17 | An intramedullary nail for fixing rib fractures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322788751.1U CN221770227U (en) | 2023-10-17 | 2023-10-17 | An intramedullary nail for fixing rib fractures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221770227U true CN221770227U (en) | 2024-09-27 |
Family
ID=92827479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322788751.1U Active CN221770227U (en) | 2023-10-17 | 2023-10-17 | An intramedullary nail for fixing rib fractures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221770227U (en) |
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2023
- 2023-10-17 CN CN202322788751.1U patent/CN221770227U/en active Active
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| GR01 | Patent grant |