CN115645018B - Femoral neck intramedullary extension device - Google Patents
Femoral neck intramedullary extension device Download PDFInfo
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- CN115645018B CN115645018B CN202211227345.1A CN202211227345A CN115645018B CN 115645018 B CN115645018 B CN 115645018B CN 202211227345 A CN202211227345 A CN 202211227345A CN 115645018 B CN115645018 B CN 115645018B
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- guide rod
- steel plate
- rod
- umbrella
- thread section
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- 210000002436 femur neck Anatomy 0.000 title abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical group [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 30
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000002035 prolonged effect Effects 0.000 claims abstract description 6
- 239000002086 nanomaterial Substances 0.000 claims description 3
- 210000001694 thigh bone Anatomy 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 230000001976 improved effect Effects 0.000 abstract description 7
- 230000036244 malformation Effects 0.000 abstract description 4
- 230000017074 necrotic cell death Effects 0.000 description 8
- 230000017531 blood circulation Effects 0.000 description 5
- 201000010099 disease Diseases 0.000 description 5
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 5
- 230000003203 everyday effect Effects 0.000 description 5
- 229910052715 tantalum Inorganic materials 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000001737 promoting effect Effects 0.000 description 4
- 208000010392 Bone Fractures Diseases 0.000 description 3
- 206010017076 Fracture Diseases 0.000 description 3
- 208000001132 Osteoporosis Diseases 0.000 description 3
- 210000004394 hip joint Anatomy 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000008338 local blood flow Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 230000010478 bone regeneration Effects 0.000 description 2
- 230000004087 circulation Effects 0.000 description 2
- 210000001624 hip Anatomy 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000011164 ossification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010061307 Neck deformity Diseases 0.000 description 1
- 206010048886 Onychoclasis Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 210000002082 fibula Anatomy 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000003211 malignant effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a femur neck intramedullary extension device in the technical field of medical appliances, which comprises a steel plate, wherein a guide rod is connected to the steel plate in a threaded manner, a screw cap is connected to the guide rod in a rotating manner, second sealing rings are arranged at the front end and the rear end of the inner wall of the guide rod, an extension rod is connected to the guide rod in a sliding manner, a first thread section and a second thread section are respectively arranged at the two ends of the extension rod, the first thread section is movably connected with the screw cap, a base is movably connected to the second thread section, a porous umbrella tantalum structure is arranged on the base, a plurality of mounting holes are formed in the steel plate, and bone nails are arranged in the mounting holes, so that the problem that malformation is generated when the femur neck is prolonged during treatment is effectively avoided, and the treatment effect of equipment is further improved.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a femoral neck intramedullary extension device.
Background
After fracture of the femoral neck, internal fixation failure such as nail withdrawal, broken nails and the like can occur due to poor fracture reduction, insufficient internal fixation mechanical support, osteoporosis and the like, thereby further causing the loss of the length of the femoral neck, femoral head necrosis and the like, and the mechanical change of the hip often leads to the need of artificial hip joint replacement treatment of patients.
For the treatment of the diseases such as the nonunion and the malformation of the femoral neck bone or the occurrence of the femoral head necrosis, the current treatment modes have no definite and effective treatment modes, such as broken-end bone grafting, fibula valve transplanting and the like, only the blood circulation improvement of the broken end of the bone and the femoral head necrosis is aimed at, so that the treatment effects of fracture healing and hip protection are obtained, but the current treatment modes can not improve the diseases such as the short neck of the femur, the malformation and the like, so that the diseases such as the malformation of the hip joint, the mechanical abnormality and the like exist for a long time, and the diseases are obviously unacceptable for young patients.
Based on the above, the invention designs a femoral neck intramedullary extension device to solve the above problems.
Disclosure of Invention
The invention aims to provide a femoral neck intramedullary extension device, which aims to solve the long-term problems of hip joint deformity, mechanical abnormality and other diseases caused by femoral neck shortening, deformity and the like, which cannot be improved by the treatment modes proposed in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a thighbone neck intramedullary extension device, includes the steel sheet, threaded connection has the guide bar on the steel sheet, it is connected with the nut to rotate on the guide bar, both ends all are equipped with the second sealing ring around the guide bar inner wall, sliding connection has the extension bar in the guide bar, extension bar both ends are equipped with first screw thread section and second screw thread section respectively, swing joint has the base on the second screw thread section, be equipped with porous umbrella tantalum structure on the base, a plurality of mounting holes have been seted up on the steel sheet, be equipped with the bone nail in the mounting hole.
Preferably, the guide rod is obliquely arranged, and the included angle between the guide rod and the steel plate is 125 degrees.
Preferably, a first sealing ring is arranged at the threaded connection part of the guide rod and the steel plate.
Preferably, a rubber anti-slip layer is arranged on the nut, and the inner side of the steel plate is arc-shaped.
Preferably, the middle part of the extension rod is a smooth rod, and the extension rod is positioned on the inner sides of the two second sealing rings.
Preferably, the porous tantalum umbrella structure comprises expandable umbrella wings which are opened to enable the porous tantalum umbrella structure to be in a truncated cone shape.
Preferably, the base and the porous umbrella tantalum structure are integrated, and the through holes formed in the base are smaller than the through holes in the porous umbrella tantalum structure.
Preferably, the diameter of the bone nail is 3.5mm, the surface of the guide rod is coated with nano materials, and the length of the guide rod is prolonged to the outside of the skin.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, through the mutual matching of the steel plate, the guide rod, the extension rod, the base, the porous umbrella tantalum structure and other parts in the equipment, the equipment is more convenient to mount, use and dismount, and each part in the equipment is mutually matched, the screw bolt is twisted and rotated for 0.75-1 circle every day, so that the femoral neck extension effect of 0.75-1mm every day is generated, meanwhile, the effects of promoting bone regeneration, improving local blood circulation and the like are realized by virtue of a bone traction technology, the femoral neck is prolonged and remodelling is realized, and meanwhile, the femoral head blood circulation is improved, and the occurrence of femoral head necrosis and the like is avoided. In addition, in the femoral head part, the invention designs an umbrella-shaped structure (porous umbrella tantalum structure) made of porous tantalum material, which generates proper opening effect in the process of implantation, so as to wrap more cancellous bone structures, enlarge stressed area, avoid malignant results such as internal fixation loosening and cutting out caused by conditions such as osteoporosis in the head, and the like, and secondly, the porous tantalum structure also proves to have the advantages of inducing osteogenesis, being beneficial to bone conduction, promoting the improvement of circulation, and the like, and has been widely used for the treatment of early femoral head necrosis, thereby generating more remarkable treatment effect, leading the equipment to have practicability in use, being more convenient in treatment and further improving the treatment effect of the equipment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the front side view angle structure of the present invention;
FIG. 2 is a schematic view of the rear side view angle structure of the present invention;
FIG. 3 is a schematic view of a partial front view of the present invention;
FIG. 4 is a schematic view of the internal structure of a partial front view angle of the present invention;
fig. 5 is a schematic view of the installation of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. a steel plate; 2. a guide rod; 3. a first seal ring; 4. a screw cap; 5. a second seal ring; 6. an extension rod; 7. a first thread segment; 8. a second thread segment; 9. a porous umbrella tantalum structure; 10. a base; 11. bone nails; 12. femoral head.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, the present invention provides a technical solution:
the utility model provides a thighbone neck intramedullary extension device, includes the steel sheet, threaded connection has the guide bar on the steel sheet, it is connected with the nut to rotate on the guide bar, both ends all are equipped with the second sealing ring around the guide bar inner wall, sliding connection has the extension bar in the guide bar, extension bar both ends are equipped with first screw thread section and second screw thread section respectively, swing joint has the base on the second screw thread section, be equipped with porous umbrella tantalum structure on the base, a plurality of mounting holes have been seted up on the steel sheet, be equipped with the bone nail in the mounting hole.
The guide rod is obliquely arranged, and an included angle between the guide rod and the steel plate is 125 degrees; the supporting force of the porous umbrella tantalum structure is convenient to improve.
Wherein, a first sealing ring is arranged at the threaded connection part of the guide rod and the steel plate; the sealing performance between the guide rod and the steel plate is improved.
Wherein a rubber anti-slip layer is arranged on the nut, and the inner side of the steel plate is arc-shaped; the rotation of the nut is convenient for operators to adjust, and the arc shape is beneficial to the joint of the steel plate and the femoral head.
The middle part of the extension rod is a smooth rod, and the extension rod is positioned at the inner sides of the two second sealing rings; the tightness between the extension rod and the guide rod is effectively improved.
The porous umbrella tantalum structure comprises an expandable umbrella wing, and the expandable umbrella wing is opened to enable the porous umbrella tantalum structure to be in a truncated cone shape; so that the bone eating amount of the porous umbrella tantalum structure is increased when the porous umbrella tantalum structure is pushed, and bone cutting is avoided.
The base and the porous umbrella tantalum structure are integrated, and the through holes formed in the base are smaller than the through holes in the porous umbrella tantalum structure; the porosity of the base portion is slightly reduced, so that the strength of the base is higher, and the stability of the base is improved.
Wherein the diameter of the bone nail is 3.5mm, the surface of the guide rod is coated with nano materials, and the length of the guide rod is prolonged to the outside of the skin; due to the stability of the steel plate, the guide rod is convenient to disassemble and assemble.
Working principle:
the method comprises the steps of opening a femoral neck, cleaning a broken end to enable the broken end to be flat, recovering bone surface blood circulation, drilling holes in a femoral head 12, implanting a porous umbrella tantalum structure 9, after adjusting the position, placing a steel plate 1, connecting the steel plate with a guide rod 2 in a threaded mode, then placing an extension rod 6 in the guide rod 2, enabling a second threaded section 8 on the guide rod 2 to be connected with a base 10 in a threaded mode, at the moment, enabling the porous umbrella tantalum structure 9, the base 10 and the extension rod 6 to be integrated, then connecting a first threaded section 7 on the extension rod 6 with a nut 4, finally installing a bone nail 11 on the steel plate 1, enabling the bone nail 11 to be connected with the femoral head 12, completing equipment installation, enabling the bone nail 11 to be connected with the femoral head 12 through twisting bolts for 0.75-1 circle every day, generating a femoral neck extension effect of 0.75-1mm daily, simultaneously improving effects of local blood circulation and the like by means of bone traction technology, improving femoral head 12 blood circulation and avoiding necrosis and the like after extension is completed, enabling the extension rod 6 and the base 10 to be separated from the extension rod 6, and then reversely rotating the steel plate 1 to be separated from the guide rod 2;
the steel plate 1, the guide rod 2, the extension rod 6, the base 10, the porous umbrella tantalum structure 9 and other parts in the equipment are mutually matched, so that the equipment is more convenient to install, use and disassemble, the parts in the equipment are mutually matched, the screw bolt is twisted and rotated for 0.75-1 circle every day, the femoral neck extension effect of 0.75-1mm every day is generated, meanwhile, the effects of promoting bone regeneration, improving local blood circulation and the like by means of a bone traction technology are achieved, the femoral neck is prolonged, the blood circulation of the femoral head 12 is improved while the femoral neck is remodelled, and the occurrence of femoral head 12 necrosis and the like is avoided. In addition, in the femoral head 12 part, the invention designs an umbrella-shaped structure (a porous umbrella tantalum structure 9) made of a porous tantalum material, which generates a proper opening effect in the process of implantation, so as to wrap more cancellous bone structures, enlarge the stress area, avoid the deviant results of internal fixation loosening, excision and the like caused by the conditions of osteoporosis and the like in the head, and secondly, the porous tantalum structure also proves to have the advantages of inducing bone formation, being beneficial to bone conduction, promoting the improvement of circulation and the like, and has been widely used for the treatment of early femoral head 12 necrosis, thereby generating more remarkable treatment effect, leading the device to have practicability in use, being more convenient in treatment and further improving the treatment effect of the device.
Claims (5)
1. The utility model provides a thighbone neck intramedullary extension device, includes steel sheet (1), its characterized in that: the steel plate (1) is connected with a guide rod (2) through threads, a nut (4) is rotationally connected to the guide rod (2), second sealing rings (5) are respectively arranged at the front end and the rear end of the inner wall of the guide rod (2), an extension rod (6) is connected in a sliding mode to the guide rod (2), a first thread section (7) and a second thread section (8) are respectively arranged at the two ends of the extension rod (6), the first thread section (7) is movably connected with the nut (4), a base (10) is movably connected to the second thread section (8), a porous umbrella tantalum structure (9) is arranged on the base (10), a plurality of mounting holes are formed in the steel plate (1), and bone nails (11) are arranged in the mounting holes; the guide rod (2) is obliquely arranged, and an included angle between the guide rod (2) and the steel plate (1) is 125 degrees; the porous umbrella tantalum structure (9) comprises expandable umbrella wings which are opened to enable the porous umbrella tantalum structure (9) to be in a truncated cone shape; the diameter of the bone nail (11) is 3.5mm, the surface of the guide rod (2) is coated with nano materials, and the length of the guide rod (2) is prolonged to the outside of the skin.
2. An intramedullary extension device of claim 1, wherein: the first sealing ring (3) is arranged at the threaded connection part of the guide rod (2) and the steel plate (1).
3. An intramedullary extension device of claim 1, wherein: the nut (4) is provided with a rubber anti-slip layer, and the inner side of the steel plate (1) is arc-shaped.
4. An intramedullary extension device of claim 1, wherein: the middle part of the extension rod (6) is a smooth rod, and the extension rod (6) is positioned at the inner sides of the two second sealing rings (5).
5. An intramedullary extension device of claim 1, wherein: the base (10) and the porous umbrella tantalum structure (9) are integrated, and the through holes formed in the base (10) are smaller than those in the porous umbrella tantalum structure (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211227345.1A CN115645018B (en) | 2022-10-09 | 2022-10-09 | Femoral neck intramedullary extension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211227345.1A CN115645018B (en) | 2022-10-09 | 2022-10-09 | Femoral neck intramedullary extension device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115645018A CN115645018A (en) | 2023-01-31 |
| CN115645018B true CN115645018B (en) | 2024-04-16 |
Family
ID=84987348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211227345.1A Active CN115645018B (en) | 2022-10-09 | 2022-10-09 | Femoral neck intramedullary extension device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115645018B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201040014Y (en) * | 2007-04-26 | 2008-03-26 | 高俊 | Double-nail locking nail-plate device for treating femur neck fracture |
| CN102793579A (en) * | 2011-05-27 | 2012-11-28 | 练克俭 | Hollow bone grafting type dynamic hip screw |
| CN102824208A (en) * | 2011-06-16 | 2012-12-19 | 王坤正 | Nickel-titanium shape memory alloy umbrella-titanium mesh femoral head internal supporting device |
| CN104352270A (en) * | 2014-10-28 | 2015-02-18 | 苏州瑞华医院有限公司 | Bone connecting device for treating femoral neck fracture |
| CN204337023U (en) * | 2014-11-20 | 2015-05-20 | 张弛 | Head marrow nail |
| CN107582218A (en) * | 2017-10-09 | 2018-01-16 | 北京爱康宜诚医疗器材有限公司 | Pattern of fusion femoral stem system |
| CN109171927A (en) * | 2018-10-08 | 2019-01-11 | 大泗医疗生物科技有限公司 | A kind of neck of femur intramedullary nail |
| CN112971951A (en) * | 2021-04-13 | 2021-06-18 | 上海市第六人民医院 | Bone stretching instrument for treating early and medium femoral head necrosis |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6607561B2 (en) * | 2001-10-02 | 2003-08-19 | James Kevin Brannon | Biaxial core compression |
| US20070173838A1 (en) * | 2006-01-12 | 2007-07-26 | Kung-Chia Li | Femoral head and neck strengthening device |
| CN103445886B (en) * | 2013-03-07 | 2016-01-06 | 刘礼初 | A kind of Biotype artificial hip joint superficial substitution prosthese |
-
2022
- 2022-10-09 CN CN202211227345.1A patent/CN115645018B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201040014Y (en) * | 2007-04-26 | 2008-03-26 | 高俊 | Double-nail locking nail-plate device for treating femur neck fracture |
| CN102793579A (en) * | 2011-05-27 | 2012-11-28 | 练克俭 | Hollow bone grafting type dynamic hip screw |
| CN102824208A (en) * | 2011-06-16 | 2012-12-19 | 王坤正 | Nickel-titanium shape memory alloy umbrella-titanium mesh femoral head internal supporting device |
| CN104352270A (en) * | 2014-10-28 | 2015-02-18 | 苏州瑞华医院有限公司 | Bone connecting device for treating femoral neck fracture |
| CN204337023U (en) * | 2014-11-20 | 2015-05-20 | 张弛 | Head marrow nail |
| CN107582218A (en) * | 2017-10-09 | 2018-01-16 | 北京爱康宜诚医疗器材有限公司 | Pattern of fusion femoral stem system |
| CN109171927A (en) * | 2018-10-08 | 2019-01-11 | 大泗医疗生物科技有限公司 | A kind of neck of femur intramedullary nail |
| CN112971951A (en) * | 2021-04-13 | 2021-06-18 | 上海市第六人民医院 | Bone stretching instrument for treating early and medium femoral head necrosis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115645018A (en) | 2023-01-31 |
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