CN113558739B - Novel minimally invasive intramedullary fixation instrument and fixation method for distal humerus fracture - Google Patents
Novel minimally invasive intramedullary fixation instrument and fixation method for distal humerus fracture Download PDFInfo
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- CN113558739B CN113558739B CN202110948824.1A CN202110948824A CN113558739B CN 113558739 B CN113558739 B CN 113558739B CN 202110948824 A CN202110948824 A CN 202110948824A CN 113558739 B CN113558739 B CN 113558739B
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- 206010020462 Humerus fracture Diseases 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title abstract description 13
- 210000002758 humerus Anatomy 0.000 claims abstract description 52
- 210000000988 bone and bone Anatomy 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 208000007981 Humeral Fractures Diseases 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000002324 minimally invasive surgery Methods 0.000 abstract description 4
- 238000001356 surgical procedure Methods 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 208000032544 Cicatrix Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 208000035965 Postoperative Complications Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000001185 bone marrow Anatomy 0.000 description 1
- 230000001054 cortical effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
- A61B17/725—Intramedullary pins, nails or other devices with special means of locking the nail to the bone with locking pins or screws of special form
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7283—Intramedullary pins, nails or other devices with special cross-section of the nail
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The application discloses a novel minimally invasive intramedullary fixation instrument for distal humerus fracture and a fixation method, wherein the fixation instrument comprises a first arc-shaped intramedullary nail which can be implanted into humerus marrow, and a second arc-shaped intramedullary nail which can be implanted into the humerus marrow and is arranged in a crossing way with the first arc-shaped intramedullary nail, the first end of the first arc-shaped intramedullary nail is provided with a first locking mechanism for locking the first arc-shaped intramedullary nail, the first end of the second arc-shaped intramedullary nail is provided with a second locking mechanism for locking the second arc-shaped intramedullary nail, and the crossing position of the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail is provided with a third locking mechanism for locking the second ends of the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail. The fixing device can achieve the purpose of treatment by only carrying out small incision minimally invasive surgery, thereby reducing the complication of the surgery and obtaining satisfactory treatment effect.
Description
Technical Field
The invention relates to the field of surgical instruments, in particular to a novel minimally invasive intramedullary fixation instrument for distal humerus fracture and a fixation method.
Background
The existing humerus distal fracture built-in object is an inner and outer steel plate, a large incision is needed for operation, soft tissues are widely stripped, operation wounds are huge, long operation scars can be left for patients, and the occurrence probability of postoperative complications is high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a novel minimally invasive intramedullary fixation instrument for distal humerus fracture and a fixation method.
The technical scheme adopted for solving the technical problems is as follows: a novel minimally invasive intramedullary fixation instrument for distal humerus fracture is constructed, which comprises a first arc-shaped intramedullary nail capable of being implanted into humerus marrow, a second arc-shaped intramedullary nail capable of being implanted into humerus marrow and being arranged in a crossing way with the first arc-shaped intramedullary nail, wherein a first locking mechanism for locking the first arc-shaped intramedullary nail is arranged at the first end of the first arc-shaped intramedullary nail, a second locking mechanism for locking the second arc-shaped intramedullary nail is arranged at the first end of the second arc-shaped intramedullary nail, and a third locking mechanism for locking the second ends of the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail is arranged at the crossing position of the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail.
In the novel minimally invasive intramedullary fixation instrument for distal humerus fracture, the first locking mechanism comprises a base fixedly arranged at the first end of the first arc-shaped intramedullary nail, at least one first nail hole fixedly arranged on the base, and at least one first locking nail which can penetrate through the first nail hole and is fixedly connected with lateral humerus condyle bone.
In the novel minimally invasive intramedullary fixation instrument for distal humerus fracture, the base is an oval disc-shaped base, and the base is fixedly connected with the first end of the first arc-shaped intramedullary nail through the connecting part.
In the novel minimally invasive intramedullary fixation instrument for distal humerus fracture, two first nail holes are formed in the base, and the first locking mechanism comprises two first locking nails.
In the novel minimally invasive intramedullary fixation instrument for distal humerus fracture, the second locking mechanism comprises a second nail hole which is arranged at the first end of the second arc-shaped intramedullary nail and penetrates through the second arc-shaped intramedullary nail, and a second locking nail which can penetrate through the nail hole and is fixedly connected with the medial humerus condyle.
In the novel minimally invasive intramedullary fixation instrument for distal humerus fracture, the third locking mechanism comprises a third locking pin and a fourth locking pin which are arranged at the crossing position of the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail, the third locking pin is arranged at the first side of the crossing position and is respectively abutted against the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail, and the fourth locking pin is arranged at the second side of the crossing position and is respectively abutted against the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail.
In the novel minimally invasive intramedullary fixation instrument for distal humerus fracture, the first locking pin and the second locking pin lock the first arc-shaped intramedullary pin and the second arc-shaped intramedullary pin from different directions respectively.
In the novel minimally invasive intramedullary fixation instrument for distal humerus fracture, the second ends of the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail are respectively provided with a tip end which is convenient for the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail to be inserted into the marrow.
The technical scheme adopted for solving the technical problems is as follows: disclosed is a novel minimally invasive intramedullary fixation method for distal humerus fracture based on the fixation instrument as described above, the fixation method comprising:
implanting a first arc intramedullary nail in the lateral humeral condyle fenestration;
Implanting a second arcuate intramedullary nail in the medial humeral condyle fenestration such that the second end of the first arcuate intramedullary nail and the second end of the second arcuate intramedullary nail intersect within the humerus marrow;
Fixing the first end of the first arc-shaped intramedullary nail to the lateral humerus condyle bone through a first locking mechanism;
fixing the first end of the second arc-shaped intramedullary nail to the medial humerus condyle bone through a second locking mechanism;
The intersection position of the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail is locked by a third locking mechanism.
In the novel minimally invasive intramedullary fixation method for the distal humerus fracture, the first locking mechanism comprises a base fixedly arranged at the first end of the first arc-shaped intramedullary nail, at least one first nail hole fixedly arranged on the base, and at least one first locking nail which can penetrate through the first nail hole and is fixedly connected with the lateral humerus condyle;
The second locking mechanism comprises a second nail hole which is arranged at the first end of the second arc-shaped intramedullary nail and penetrates through the second arc-shaped intramedullary nail, and a second locking nail which can penetrate through the nail hole and is fixedly connected with the medial humerus condyle bone;
the third locking mechanism comprises a third locking pin and a fourth locking pin which are arranged at the crossing position of the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail;
the first end of the first arc-shaped intramedullary nail is fixed on the lateral humerus condyle through the first locking mechanism, which comprises the following steps:
a first locking nail penetrates through the first nail hole and is fixedly connected with the lateral humerus condyle bone;
The step of fixing the first end of the second arc-shaped intramedullary nail to the medial humerus condyle bone through the second locking mechanism comprises the following steps:
a second locking nail penetrates through the second nail hole and is fixedly connected with the medial humerus condyle bone;
The step of locking the crossing position of the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail through the third locking mechanism comprises the following steps:
Placing the third locking nail on the first side of the crossing position and respectively abutting against the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail; the fourth locking pin is disposed on a second side of the intersection and is respectively abutted against the first curved intramedullary nail and the second curved intramedullary nail.
The minimally invasive intramedullary fixation instrument and the fixation method for the distal humerus fracture have the following beneficial effects: when the minimally invasive intramedullary fixation instrument for the distal humerus fracture is used, a first arc-shaped intramedullary nail is implanted in the lateral humerus condyle fenestration, a second arc-shaped intramedullary nail is implanted in the medial humerus condyle fenestration, so that the second end of the first arc-shaped intramedullary nail and the second end of the second arc-shaped intramedullary nail are intersected in the humerus intramedullary, the first end of the first arc-shaped intramedullary nail is fixed on the lateral humerus condyle through a first locking mechanism, the first end of the second arc-shaped intramedullary nail is fixed on the medial humerus condyle through a second locking mechanism, and finally the intersection position of the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail is locked through a third locking mechanism. The fixation of the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail and the fixation of the humerus can be realized. The fixing device can achieve the purpose of treatment by only carrying out small incision minimally invasive surgery, thereby reducing the complication of the surgery and obtaining satisfactory treatment effect.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic view of the structure of the fixation instrument of the present invention;
Fig. 2 is a schematic view of the structure of the fixation device of the present invention implanted in the humerus.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, in a first embodiment of the minimally invasive intramedullary fixation device for distal humerus fracture of the present invention, the fixation device 1 comprises a first curved intramedullary nail 2 implantable in the humerus marrow, a second curved intramedullary nail 3 implantable in the humerus marrow and disposed crosswise to the first curved intramedullary nail 2, a first end of the first curved intramedullary nail 2 being provided with a first locking mechanism 11 for locking the first curved intramedullary nail 2, a second locking mechanism 12 for locking the second curved intramedullary nail 3 being provided at a first end of the second curved intramedullary nail 3, and a third locking mechanism 13 for locking a second end of the first curved intramedullary nail 2 and the second curved intramedullary nail 3 being provided at a crossing position of the first curved intramedullary nail 2 and the second curved intramedullary nail 3.
When the minimally invasive intramedullary fixation instrument 1 for distal humerus fracture is used, only the first arc-shaped intramedullary nail 2 is implanted in the lateral humerus condyle fenestration, the second arc-shaped intramedullary nail 3 is implanted in the medial humerus condyle fenestration, so that the second end of the first arc-shaped intramedullary nail 2 and the second end of the second arc-shaped intramedullary nail 3 are intersected in the humerus intramedullary, then the first end of the first arc-shaped intramedullary nail 2 is fixed on the lateral humerus condyle through the first locking mechanism 11, the first end of the second arc-shaped intramedullary nail 3 is fixed on the medial humerus condyle through the second locking mechanism 12, and finally the intersection position of the first arc-shaped intramedullary nail 2 and the second arc-shaped intramedullary nail 3 is locked through the third locking mechanism 13. The fixation of the first arc-shaped intramedullary nail 2 and the second arc-shaped intramedullary nail 3 and the fixation of the humerus can be realized. The fixing device 1 can achieve the purpose of treatment by only carrying out small incision minimally invasive surgery, thereby reducing the complication of the surgery and obtaining satisfactory treatment effect.
As shown in fig. 1 and 2, in the present embodiment, the first locking mechanism 11 includes a base 4 fixedly disposed at a first end of the first curved intramedullary nail 2, at least one first nail hole 5 fixedly disposed on the base 4, and at least one first locking nail 6 capable of penetrating the first nail hole 5 and fixedly connecting with a lateral humerus condyle.
Specifically, the base 4 is an oval disc-shaped base 4, and the base 4 is fixedly connected with the first end of the first arc-shaped intramedullary nail 2 through a connecting part.
Preferably, the base 4 is provided with two first pin holes 5, and the first locking mechanism 11 comprises two first locking pins 6.
In securing the first intramedullary nail first end, a first locking nail 6 may be inserted into the humerus through the first nail hole 5 and the base 4 secured to the lateral humeral condyle by the first locking nail 6.
In other embodiments, the first locking mechanism 11 may also be a locking hole and a locking pin provided on the first end of the first curved intramedullary nail 2.
In this embodiment, the second locking mechanism 12 includes a second nail hole 7 disposed at the first end of the second curved intramedullary nail 3 and penetrating the second curved intramedullary nail 3, and a second locking nail 8 that can penetrate the nail hole and be fixedly connected to the medial humeral condyle.
When the second end of the second arc-shaped intramedullary nail 3 is fixed, the second locking nail 8 can be inserted into the humerus through the second nail hole 7, so that the second end of the second arc-shaped intramedullary nail 3 is fixed.
In other embodiments, the second locking mechanism 12 may also be a base 4 and staple structure.
Further, the third locking mechanism 13 includes a third locking pin 9 and a fourth locking pin 10 disposed at the intersection of the first curved intramedullary nail 2 and the second curved intramedullary nail 3, the third locking pin 9 being disposed at a first side of the intersection and abutting the first curved intramedullary nail 2 and the second curved intramedullary nail 3, respectively, and the fourth locking pin 10 being disposed at a second side of the intersection and abutting the first curved intramedullary nail 2 and the second curved intramedullary nail 3, respectively.
Preferably, the first and second locking nails 6, 8 lock the first and second curved intramedullary nails 2,3, respectively, from different directions.
By providing the third locking nail 9 and the fourth locking nail 10, the function of blocking the first arc-shaped intramedullary nail 2 and the second arc-shaped intramedullary nail 3 from moving up and down in the marrow can be achieved, and simultaneously the first arc-shaped intramedullary nail 2 and the second arc-shaped intramedullary nail 3 can be prevented from rotating in the marrow. Further, the third locking nail 9 and the fourth locking nail 10 can also squeeze and expand the first arc-shaped intramedullary nail 2 and the second arc-shaped intramedullary nail 3 to the inner wall side of the bone marrow cavity, thereby increasing the friction force between the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail.
In order to facilitate the insertion of the first and second curved intramedullary nails 2,3 into the medullary cavity from the humeral fenestration, the second ends of the first and second curved intramedullary nails 2,3 are provided with tips that facilitate the insertion of the first and second curved intramedullary nails 2,3 into the intramedullary.
Preferably, in the present embodiment, the first locking pin 6 and the second locking pin 8 are fixing screws with diameters of 2.7mm, the third locking pin 9 and the fourth locking pin 10 are cortical bone screws with diameters of 3.5mm, and the lengths of the first locking pin 6, the second locking pin 8, the third locking pin 9 and the fourth locking pin 10 can be set according to the bone morphology of a human body.
Furthermore, the first arc intramedullary nail 2 and the second arc intramedullary nail 3 are arc solid metal cylinders, and the diameter, the curvature radius and the length of the arc solid metal cylinders can be designed according to human parameters.
As shown in fig. 2, the invention also discloses a novel minimally invasive intramedullary fixation method for distal humerus fracture, based on the fixation apparatus 1, the fixation method comprises the following steps:
step S101, implanting a first arc-shaped intramedullary nail 2 into the lateral humerus condyle fenestration;
step S102, implanting a second arc-shaped intramedullary nail 3 in the medial humerus condyle fenestration, so that the second end of the first arc-shaped intramedullary nail 2 and the second end of the second arc-shaped intramedullary nail 3 are intersected in the humerus marrow;
Step S103, fixing the first end of the first arc-shaped intramedullary nail 2 to the lateral humerus condyle bone through the first locking mechanism 11;
step S104, fixing the first end of the second arc-shaped intramedullary nail 3 to the medial humerus condyle bone through the second locking mechanism 12;
Step S105, locking the intersection of the first curved intramedullary nail 2 and the second curved intramedullary nail 3 by the third locking mechanism 13.
Specifically, step S103 and step S104 may be performed sequentially, or may be performed simultaneously, or may be performed first.
When the minimally invasive intramedullary fixation method for the distal humerus fracture is implemented, only the first arc-shaped intramedullary nail 2 is implanted in the lateral humerus condyle fenestration, the second arc-shaped intramedullary nail 3 is implanted in the medial humerus condyle fenestration, so that the second end of the first arc-shaped intramedullary nail 2 and the second end of the second arc-shaped intramedullary nail 3 are intersected in the humerus intramedullary, then the first end of the first arc-shaped intramedullary nail 2 is fixed on the lateral humerus condyle through the first locking mechanism 11, the first end of the second arc-shaped intramedullary nail 3 is fixed on the medial humerus condyle through the second locking mechanism 12, and finally the intersection position of the first arc-shaped intramedullary nail 2 and the second arc-shaped intramedullary nail 3 is locked through the third locking mechanism 13. The fixation of the first arc-shaped intramedullary nail 2 and the second arc-shaped intramedullary nail 3 and the fixation of the humerus can be realized. The fixing device 1 can achieve the purpose of treatment by only carrying out small incision minimally invasive surgery, thereby reducing the complication of the surgery and obtaining satisfactory treatment effect.
Further, the first locking mechanism 11 includes a base 4 fixedly disposed at a first end of the first curved intramedullary nail 2, at least one first nail hole 5 fixedly disposed on the base 4, and at least one first locking nail 6 capable of penetrating the first nail hole 5 and fixedly connecting with the lateral humerus condyle.
The second locking mechanism 12 includes a second nail hole 7 disposed at the first end of the second curved intramedullary nail 3 and extending through the second curved intramedullary nail 3, and a second locking nail 8 extending through the nail hole and fixedly connected to the medial humeral condyle.
The third locking mechanism 13 comprises a third locking pin 9 and a fourth locking pin 10 arranged at the crossing position of the first curved intramedullary nail 2 and the second curved intramedullary nail 3.
The step S103 specifically includes:
a first locking nail 6 penetrates through the first nail hole 5 and is fixedly connected with the lateral humerus condyle bone;
the step S104 specifically includes:
a second locking nail 8 penetrates through the second nail hole 7 and is fixedly connected with the medial humerus condyle bone;
the step S105 specifically includes:
Placing the third locking pin 9 on the first side of the intersection and in abutment with the first curved intramedullary nail 2 and the second curved intramedullary nail 3, respectively; the fourth locking pin 10 is placed on the second side of the intersection and abuts the first curved intramedullary nail 2 and the second curved intramedullary nail 3, respectively.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (4)
1. The minimally invasive intramedullary fixation instrument for the distal humerus fracture is characterized by comprising a first arc-shaped intramedullary nail which can be implanted into humerus marrow and a second arc-shaped intramedullary nail which can be implanted into humerus marrow and is arranged in a crossing way with the first arc-shaped intramedullary nail, wherein a first locking mechanism for locking the first arc-shaped intramedullary nail is arranged at the first end of the first arc-shaped intramedullary nail, a second locking mechanism for locking the second arc-shaped intramedullary nail is arranged at the first end of the second arc-shaped intramedullary nail, and a third locking mechanism for locking the second ends of the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail is arranged at the crossing position of the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail;
The first locking mechanism comprises a base fixedly arranged at the first end of the first arc-shaped intramedullary nail, at least one first nail hole fixedly arranged on the base, and at least one first locking nail which can penetrate through the first nail hole and is fixedly connected with the lateral humerus condyle;
The second locking mechanism comprises a second nail hole which is arranged at the first end of the second arc-shaped intramedullary nail and penetrates through the second arc-shaped intramedullary nail, and a second locking nail which can penetrate through the nail hole and is fixedly connected with the medial humerus condyle bone;
The third locking mechanism comprises a third locking pin and a fourth locking pin which are arranged at the crossing position of the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail, the third locking pin is arranged at the first side of the crossing position and is respectively abutted against the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail, and the fourth locking pin is arranged at the second side of the crossing position and is respectively abutted against the first arc-shaped intramedullary nail and the second arc-shaped intramedullary nail;
the first and second locking nails lock the first and second arcuate intramedullary nails from different directions, respectively.
2. The minimally invasive intramedullary fixation instrument of a distal humeral fracture of claim 1, wherein the base is an oval disk shaped base fixedly connected to the first end of the first arcuate intramedullary nail by a connection.
3. The minimally invasive intramedullary fixation instrument for distal humerus fractures according to claim 1 or 2, wherein two first nail holes are provided on the base, the first locking mechanism comprising two first locking nails.
4. The minimally invasive intramedullary fixation instrument of a distal humeral fracture of claim 1, wherein the first and second curved intramedullary nails are each provided at their second ends with a tip that facilitates insertion of the first and second curved intramedullary nails into the intramedullary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110948824.1A CN113558739B (en) | 2021-08-18 | 2021-08-18 | Novel minimally invasive intramedullary fixation instrument and fixation method for distal humerus fracture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110948824.1A CN113558739B (en) | 2021-08-18 | 2021-08-18 | Novel minimally invasive intramedullary fixation instrument and fixation method for distal humerus fracture |
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| CN113558739B true CN113558739B (en) | 2024-06-25 |
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| CN215839410U (en) * | 2021-08-18 | 2022-02-18 | 南方科技大学 | Novel minimally invasive intramedullary fixation instrument for distal humerus fracture |
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| CN87101011A (en) * | 1987-03-31 | 1988-02-24 | 上海市长海医院 | Memory nail and extractor thereof in the forked humerus marrow |
| CA2191427C (en) * | 1994-06-10 | 2007-05-01 | Michael Gordon Matthews | Intramedullary nail |
| US8357162B2 (en) * | 2010-01-13 | 2013-01-22 | Paul Christopher Frake | Intramedullary mandibular condyle implants and method for application of the same |
| EP2822487B1 (en) * | 2012-03-08 | 2017-10-18 | TriMed, Inc. | System treating a fractured bone |
| CN109820585B (en) * | 2018-07-10 | 2024-02-13 | 河北瑞鹤医疗器械有限公司 | Minimally Invasive Intramedullary Plate System |
| CN112006768A (en) * | 2020-09-23 | 2020-12-01 | 杨润松 | Combined fixing device for femoral intramedullary nail steel plate |
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| CN215839410U (en) * | 2021-08-18 | 2022-02-18 | 南方科技大学 | Novel minimally invasive intramedullary fixation instrument for distal humerus fracture |
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