CN216221612U - Middle nail system of calcaneus fracture reduction nail - Google Patents
Middle nail system of calcaneus fracture reduction nail Download PDFInfo
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- CN216221612U CN216221612U CN202121851825.6U CN202121851825U CN216221612U CN 216221612 U CN216221612 U CN 216221612U CN 202121851825 U CN202121851825 U CN 202121851825U CN 216221612 U CN216221612 U CN 216221612U
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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
- A61B17/7291—Intramedullary pins, nails or other devices for small bones, e.g. in the foot, ankle, hand or wrist
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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
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1725—Guides or aligning means for drills, mills, pins or wires for applying transverse screws or pins through intramedullary nails or pins
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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
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1775—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the foot or ankle
-
- 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
- A61B17/8645—Headless screws, e.g. ligament interference screws
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Neurology (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The utility model discloses a nail-in-nail system for calcaneal fracture reduction nails, which belongs to the technical field of medical instruments and comprises a main nail, a first auxiliary nail, a second auxiliary nail, a third auxiliary nail, a fourth auxiliary nail and a guider, wherein the main nail is provided with a first screw hole, a second screw hole, a third screw hole and a fourth screw hole in a penetrating manner, the first auxiliary nail is embedded in the first screw hole, the second auxiliary nail is embedded in the second screw hole and can play a role in fixing and supporting fracture of a posterior articular surface, the third auxiliary nail is embedded in the third screw hole and can play a role in fixing tongue type fracture, the fourth auxiliary nail is embedded in the fourth screw hole and can play a role in fixing forward protruding fracture, the guider is provided with a main guide cylinder, a first guide cylinder, a second guide cylinder, a third guide cylinder and a fourth guide cylinder, so that the operation of medical personnel can be facilitated and the screws can be more accurately placed, thereby shortening the operation time and reducing the damage to the affected part.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a middle nail system of a calcaneus fracture reduction nail.
Background
The treatment of the calcaneus fracture is generally an operation of directly connecting and fixing the broken bones in or outside the broken bones by using metal screws, steel plates, intramedullary pins, steel wires or bone plates and the like, and the external L-shaped access incision, reduction and internal fixation are the gold standards for the treatment of the calcaneus fracture operation at present.
The patent with publication number CN210494207U in the prior art provides a calcaneal fracture repositor, which comprises a fixed support, a fracture block operating support for operating fracture block to reposition, and a connecting device for connecting the fixed support and the fracture block operating support, wherein the fracture block operating support is universally and movably arranged on the fixed support through the connecting device, the moving direction of the fracture block operating support is adapted to the axial direction of a fracture block, the connecting device comprises a universal joint mechanism and a traction mechanism, the fracture block operating support is connected to the fixed support in a universal and locking and positioning way through the universal joint mechanism, the fracture block operating support is driven by the traction mechanism to move and position, when the repositor is placed, complications such as incision infection, skin edge necrosis, exposure of an internal object and the like are easily caused, in the operation, in order to obtain accurate nail placing direction, the direction and the length of a guide needle are confirmed through repeated perspective of a plurality of directions, frequent intraoperative fluoroscopy not only prolongs the operation time but also increases the X-ray exposure of a patient, and if nail placement errors occur, the holding force of a screw is easy to reduce, the supporting force is insufficient, and iatrogenic complications caused by the situation that the screw penetrates through the side wall or the subtalar joint and the like may occur.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a middle nail system of a calcaneus fracture reduction nail, which aims to solve the technical problems that the calcaneus treatment operation time is long, and the holding force of a screw is easy to reduce and the supporting force is insufficient when the nail is placed wrongly in the prior art.
The embodiment of the utility model adopts the following technical scheme: comprises a main nail, a first auxiliary nail, a second auxiliary nail, a third auxiliary nail, a fourth auxiliary nail and a guider, wherein a first screw hole, a second screw hole, a third screw hole and a fourth screw hole are arranged on the main nail in a penetrating way, the first auxiliary nail is embedded in the first screw hole, the second auxiliary nail is embedded in the second screw hole, the third auxiliary nail is embedded in the third screw hole, the fourth auxiliary nail is embedded in the fourth screw hole, the guider is provided with a main guide cylinder, a first guide cylinder, a second guide cylinder, a third guide cylinder and a fourth guide cylinder, the main guide cylinder is arranged at the extending position of the main nail, the first guide cylinder is arranged at the extending position of the first screw hole, the second guide cylinder is arranged at the extending position of the second screw hole, the third guide cylinder is arranged at the extending position of the third screw hole, and the fourth guide cylinder is arranged at the extending position of the fourth screw hole.
Furthermore, the angle γ between the first auxiliary nail and the main nail is 40-55 degrees, preferably γ =50 degrees, the angle is towards the toe, the angle β between the second auxiliary nail and the main nail is 30-60 degrees, preferably β =40 degrees, the angle is towards the toe, the angle α between the third auxiliary nail and the main nail is 40-70 degrees, preferably α =55 degrees, the angle is towards the heel, a first plane where the axes of the first auxiliary nail, the second auxiliary nail, the first screw hole and the second screw hole are located is parallel to a second plane where the axes of the third auxiliary nail and the third screw hole are located, and the axis of the fourth screw hole is perpendicular to the axis of the main nail and perpendicular to the first plane and the second plane.
Further, the main nail is arranged in a hollow mode.
Furthermore, the outer peripheral surface of the main nail is provided with equidistant threads with equal diameters.
Furthermore, the tip of the main nail is arranged in a round and blunt mode.
The embodiment of the utility model adopts at least one technical scheme which can achieve the following beneficial effects:
first, when the present invention is used, the first and second auxiliary nails inserted into the main nail can play a role of fixing and supporting the posterior facet joint fracture, the third auxiliary nail inserted into the main nail can play a role of fixing the tongue-shaped fracture, and the fourth auxiliary nail inserted into the main nail can play a role of fixing the anterior process fracture.
Secondly, the main guide cylinder, the first guide cylinder, the second guide cylinder, the third guide cylinder and the fourth guide cylinder are arranged, so that the operation of medical workers can be facilitated, the screws can be more accurately placed, the operation time can be shortened, and the damage to the affected part is reduced.
Thirdly, the angle gamma of the first auxiliary nail and the main nail is 40-55 degrees, preferably gamma =50 degrees, the angle is towards the toe, the angle beta of the second auxiliary nail and the main nail is 30-60 degrees, preferentially beta =40 degrees, the angle is towards the toe, the angle alpha of the third auxiliary nail and the main nail is 40-70 degrees, preferably alpha =55 degrees, the angle is towards the heel direction, a first plane where the axes of the first auxiliary nail, the second auxiliary nail and the first screw hole and the second screw hole are located is parallel to a second plane where the axes of the third auxiliary nail and the third screw hole are located, the axis of the fourth screw hole is vertical to the axis of the main nail and is vertical to the first plane and the second plane, the nail-in-nail structure can be integrally formed into a nail in a triangular fixing form through the arrangement, so that the structural support is more stable, the holding force of a screw can be improved, and the early rehabilitation training of a patient can be facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a perspective view of the guide of the present invention;
FIG. 3 is a first partial schematic view of the present invention;
FIG. 4 is a second partial schematic view of the present invention;
FIG. 5 is a schematic view of the main nail structure of the present invention;
fig. 6 is a schematic view of the structure of the present invention in use.
Reference numerals
The screw nail comprises a main nail 1, a first screw hole 11, a second screw hole 12, a third screw hole 13, a fourth screw hole 14, a first auxiliary nail 2, a second auxiliary nail 3, a third auxiliary nail 4, a fourth auxiliary nail 5, a guider 6, a main guide cylinder 61, a first guide cylinder 62, a second guide cylinder 63, a third guide cylinder 64 and a fourth guide cylinder 65.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
The embodiment of the utility model provides a nail-in-nail system for calcaneal fracture reduction nails, which comprises a main nail 1, a first auxiliary nail 2, a second auxiliary nail 3, a third auxiliary nail 4, a fourth auxiliary nail 5 and a guide device 6, wherein a first screw hole 11, a second screw hole 12, a third screw hole 13 and a fourth screw hole 14 are arranged on the main nail 1 in a penetrating way, the first auxiliary nail 2 is embedded in the first screw hole 11, the second auxiliary nail 3 is embedded in the second screw hole 12, the first auxiliary nail 2 and the second auxiliary nail 3 which are embedded in the main nail 1 can play a role in fixing and supporting posterior articular surface fracture, the third auxiliary nail 4 is embedded in the third screw hole 13, the third auxiliary nail 4 which is embedded in the main nail 1 can play a role in fixing tongue type fracture, the fourth auxiliary nail 5 is embedded in the fourth screw hole 14, the third auxiliary nail 4 which is embedded in the main nail 1 can play a role in fixing anterior protuberant fracture, the guide device 6 is provided with a main guide cylinder 61, a first guide cylinder 62, a second guide cylinder 63, a third guide cylinder 64 and a fourth guide cylinder 65, the main guide cylinder 61 is arranged at the extending position of the main nail 1, the first guide cylinder 62 is arranged at the extending position of the first screw hole 11, the second guide cylinder 63 is arranged at the extending position of the second screw hole 12, the third guide cylinder 64 is arranged at the extending position of the third screw hole 13, the fourth guide cylinder 65 is arranged at the extending position of the fourth screw hole 14, and the main guide cylinder 61, the first guide cylinder 62, the second guide cylinder 63, the third guide cylinder 64 and the fourth guide cylinder 65 are arranged, so that the operation of medical staff can be facilitated, the screw can be accurately placed, the operation time can be shortened, and the damage to the affected part can be reduced.
Preferably, the angle γ between the first secondary nail 2 and the main nail 1 ranges from 40 degrees to 55 degrees, preferably γ =50 degrees, the angle is towards the toe, the angle β between the second secondary nail 3 and the main nail 1 ranges from 30 degrees to 60 degrees, preferably β =40 degrees, the angle is towards the toe, the angle α between the third secondary nail 4 and the main nail 1 ranges from 40 degrees to 70 degrees, preferably α =55 degrees, the angle is towards the heel, a first plane where the axes of the first secondary nail 2, the second secondary nail 3, the first screw hole 11 and the second screw hole 12 are located is parallel to a second plane where the axes of the third secondary nail 4 and the third screw hole 13 are located, the axis of the fourth screw hole 14 is perpendicular to the axis of the main nail 1 and perpendicular to the first plane and the second plane, and by the above arrangement, a nail-in-nail structure which is integrally in a triangle fixing form can be formed, not only the structural support is more stable, the holding force of the screw can be improved, so that the early rehabilitation training of the patient is facilitated.
Preferably, the main nail 1 is arranged in a hollow manner, when the fracture part is at a deeper position, the main nail 1 is usually positioned through a kirschner wire, then the main nail 1 arranged in the hollow manner penetrates through the kirschner wire to fix the fracture end, and when the nail needs to be pulled out, the main nail 1 can be directly taken out from the hollow manner, so that the blood circulation of the fracture end can be properly promoted under the condition that the fixation of the fracture end is not influenced.
Preferably, be equipped with the screw thread of equidistance constant diameter on the outer peripheral face of main nail 1, through setting up the screw thread of equidistance constant diameter, make main nail 1 more accurate when putting into to can shorten operation time, reduce the infection risk.
Preferably, the center of the main nail 1 is arranged in a blunt shape, and when the main nail 1 is placed into the calcaneus, the main nail 1 can be prevented from damaging the joint surface when placed into the calcaneus through the blunt shape of the center of the main nail 1.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (6)
1. The middle nail system of the calcaneal fracture reduction nail is characterized by comprising a main nail (1), a first auxiliary nail (2), a second auxiliary nail (3), a third auxiliary nail (4), a fourth auxiliary nail (5) and a guider (6), wherein a first screw hole (11), a second screw hole (12), a third screw hole (13) and a fourth screw hole (14) are arranged on the main nail (1) in a penetrating mode, the first auxiliary nail (2) is embedded in the first screw hole (11), the second auxiliary nail (3) is embedded in the second screw hole (12), the third auxiliary nail (4) is embedded in the third screw hole (13), the fourth auxiliary nail (5) is embedded in the fourth screw hole (14), a main guide cylinder (61), a first guide cylinder (62), a second guide cylinder (63), a third guide cylinder (64) and a fourth guide cylinder (65) are arranged on the guider (6), the main guide cylinder (61) is arranged at the extending position of the main nail (1), the first guide cylinder (62) is arranged at the extending position of the first screw hole (11), the second guide cylinder (63) is arranged at the extending position of the second screw hole (12), the third guide cylinder (64) is arranged at the extending position of the third screw hole (13), and the fourth guide cylinder (65) is arranged at the extending position of the fourth screw hole (14).
2. The nail-in-nail system for calcaneus fracture reduction nails of claim 1, the angle gamma interval between the first auxiliary nail (2) and the main nail (1) is 40-55 degrees, the angle is towards the toe direction, the angle beta interval between the second auxiliary nail (3) and the main nail (1) is 30-60 degrees, the angle is towards the toe direction, the angle alpha interval between the third auxiliary nail (4) and the main nail (1) is 40-70 degrees, the angle is towards the direction of heel, a first plane where the axes of the first auxiliary nail (2), the second auxiliary nail (3), the first screw hole (11) and the second screw hole (12) are located is parallel to a second plane where the axes of the third auxiliary nail (4) and the third screw hole (13) are located, the axis of the fourth screw hole (14) is perpendicular to the axis of the main nail (1) and perpendicular to the first plane and the second plane.
3. A nail-in-nail system for calcaneal fracture reduction nails according to claim 2, characterized in that the angle γ of the first secondary nail (2) to the primary nail (1) is preferably 50 degrees, the angle is towards the toe, the angle β of the second secondary nail (3) to the primary nail (1) is preferably 40 degrees, the angle is towards the toe, the angle α of the third secondary nail (4) to the primary nail (1) is preferably 55 degrees, the angle is towards the heel.
4. A nail-in-nail system for calcaneal fracture reduction nails according to claim 1, characterized in that the main nail (1) is hollow.
5. The nail-in-nail system for the calcaneus fracture reduction nail according to claim 1, wherein threads with equal distance and equal diameter are arranged on the outer peripheral surface of the main nail (1).
6. The nail-in-nail system for the calcaneus fracture reduction nail according to claim 1, wherein the tip of the main nail (1) is arranged in a round and blunt mode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121851825.6U CN216221612U (en) | 2021-08-09 | 2021-08-09 | Middle nail system of calcaneus fracture reduction nail |
| DE202022100295.9U DE202022100295U1 (en) | 2021-08-09 | 2022-01-20 | Medical device for reducing heel bone fractures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121851825.6U CN216221612U (en) | 2021-08-09 | 2021-08-09 | Middle nail system of calcaneus fracture reduction nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216221612U true CN216221612U (en) | 2022-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121851825.6U Active CN216221612U (en) | 2021-08-09 | 2021-08-09 | Middle nail system of calcaneus fracture reduction nail |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN216221612U (en) |
| DE (1) | DE202022100295U1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024047400A1 (en) * | 2022-09-01 | 2024-03-07 | Rlfa Consultants Ltd | Screw capture system for calcaneal fracture |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210494207U (en) | 2019-04-16 | 2020-05-12 | 叶智江 | Calcaneus fracture restorer |
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2021
- 2021-08-09 CN CN202121851825.6U patent/CN216221612U/en active Active
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2022
- 2022-01-20 DE DE202022100295.9U patent/DE202022100295U1/en active Active
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| Publication number | Publication date |
|---|---|
| DE202022100295U1 (en) | 2022-03-09 |
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