CN114145829B - Intramedullary fixation system for absorbable material for tubular bone fracture - Google Patents
Intramedullary fixation system for absorbable material for tubular bone fracture Download PDFInfo
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- CN114145829B CN114145829B CN202111492486.1A CN202111492486A CN114145829B CN 114145829 B CN114145829 B CN 114145829B CN 202111492486 A CN202111492486 A CN 202111492486A CN 114145829 B CN114145829 B CN 114145829B
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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
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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
- A61B17/7241—Intramedullary pins, nails or other devices with special means of locking the nail to the bone the nail having separate elements through which screws pass
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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
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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
- A61B17/7258—Intramedullary pins, nails or other devices with special means of locking the nail to the bone with laterally expanding parts, e.g. for gripping the bone
- A61B17/7266—Intramedullary pins, nails or other devices with special means of locking the nail to the bone with laterally expanding parts, e.g. for gripping the bone with fingers moving radially outwardly
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
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Abstract
An intramedullary fixation system for absorbable materials for tubular bone fracture comprises an intramedullary nail made of absorbable materials and a plurality of fixing bolts. The intramedullary nail comprises a main nail body and an adjusting assembly, wherein the main nail body is cylindrical, a plurality of connecting holes are uniformly formed in the circumferential directions of two ends of the cylinder wall of the main nail body, and an adjusting threaded hole is formed in the middle of the cylinder wall. The adjusting assembly comprises an adjusting bolt and two adjusting units which are oppositely arranged, and the diameter of the intramedullary nail is adjusted through the cooperation of elements in the adjusting units. The invention changes the traditional fixing mode at present, reasonably utilizes the mechanical principle, minimizes the internal fixing bearing force, enhances the internal fixing strength of the absorbable material through the design of the appearance structure, has smaller wound, adopts the absorbable material, does not need to take out the internal fixing after operation, and reduces the injury and the cost of patients.
Description
Technical Field
The invention relates to the technical field of internal fracture fixation equipment, in particular to an intramedullary fixation system for tubular bone fracture absorbable materials.
Background
Among the many disciplines of medicine, trauma orthopedics belongs to the relatively fast-growing discipline. Among them, in terms of fracture fixation, there is a rapid development from 371 steel to current titanium alloy, from a general steel plate to a limited contact pressurized steel plate, and to a locking plate applied at present.
For tubular bone fracture, steel plate internal fixation or intramedullary interlocking nail fixation is generally selected in the current medical operation. The steel plate internal fixation needs a larger incision, so that the wound is larger, the steel plate is fixed on one side, the mechanical principle of the mode is poor, and the force below the steel plate and around the nail hole is larger, so that the local blood circulation can be influenced, and the fracture healing is influenced to a certain extent. Intramedullary interlocking nails may reduce trauma, but require reaming of the entire intramedullary canal, and thus are not suitable for children's fractures, and these internal fixation materials all need to be removed after the fracture heals, so the patient may need to undergo secondary surgery, which may increase the trauma and expense of the patient.
Currently, there are absorbable internal screws in medicine, but the fixation strength is poor, so that the absorbable internal screw can only be used at a fracture site without load, and the application range is severely limited. According to the current fixing mode, the high strength is needed, and the absorbable material is low in strength, so that the internal fixing failure is easy to occur due to fracture. Tubular bones are often required to bear loads and are therefore not satisfactory in current manners of immobilization of absorbable materials.
Disclosure of Invention
The invention aims to solve the technical problems, and provides an intramedullary fixation system for tubular bone fracture absorbable materials, which does not adopt a unilateral fixation mode any more, does not need the whole intramedullary canal to expand marrow, changes the traditional fixation mode at present, reasonably utilizes the mechanical principle, minimizes the internal fixation bearing force, and enhances the internal fixation strength of the absorbable materials through the design of an external structure.
The invention provides a technical scheme for solving the technical problems, which is as follows: the intramedullary nail comprises a main nail body and an adjusting assembly, wherein the main nail body is in a cylinder shape, a plurality of connecting holes are uniformly formed in the circumferential direction of two ends of the cylinder wall of the main nail body, and an adjusting threaded hole is formed in the middle of the cylinder wall; the adjusting component comprises an adjusting bolt and two adjusting units which are oppositely arranged, the adjusting bolt is screwed into the main nail through an adjusting threaded hole in the main nail body, one end of the adjusting bolt, which is screwed into the main nail body, is provided with a first conical tip, the adjusting unit comprises an axial pushing rod, a radial pushing rod and an arc-shaped adjusting plate, the axial pushing rod is positioned in the middle of the inside of the main nail body and extends along the axial direction of the main nail, one end of the axial pushing rod, which is far away from the adjusting bolt, is provided with a second conical tip, a plurality of radial pushing rods are uniformly distributed along the circumferential direction of the second conical tip on the axial pushing rod, and one end of the radial pushing rod, which is far away from the axial pushing rod, extends out through a connecting hole and is fixedly connected with the arc-shaped adjusting plate.
Further optimization of an intramedullary fixation system of a tubular bone fracture absorbable material as one of the present inventions: the main nail comprises a main nail body, an inner core of absorbable material is embedded in the main nail body, an axial blind hole extending in the axial direction is formed in the inner core, an adjusting blind hole extending in the radial direction is formed in the middle of the inner core, the adjusting blind hole corresponds to an adjusting threaded hole in the main nail body, threads are arranged on the wall of an opening end of the adjusting blind hole, the adjusting bolts are screwed into the adjusting blind hole, a plurality of connecting blind holes extending in the radial direction are uniformly formed in the two ends of the inner core in the circumferential direction, the connecting blind holes correspond to the connecting holes, and the radial pushing rod extends out of the main nail body through the connecting blind holes and is fixedly connected with an arc-shaped adjusting plate.
Further optimization of an intramedullary fixation system of a tubular bone fracture absorbable material as one of the present inventions: the sleeve is sleeved outside the axial pushing rod, two symmetrical support columns are fixedly connected in the radial direction of the sleeve, and one end, away from the sleeve, of each support column is fixedly connected with the inner wall of the main nail.
Further optimization of an intramedullary fixation system of a tubular bone fracture absorbable material as one of the present inventions: a sliding groove matched with the axial pushing rod for sliding is formed in the first conical pointed end of the adjusting bolt.
Further optimization of an intramedullary fixation system of a tubular bone fracture absorbable material as one of the present inventions: and a sliding groove matched with the radial pushing rod for sliding is formed in the second conical tip on the axial pushing rod.
Further optimization of an intramedullary fixation system of a tubular bone fracture absorbable material as one of the present inventions: an indication line extending in the circumferential direction is arranged in the middle of the main nail body.
Further optimization of an intramedullary fixation system of a tubular bone fracture absorbable material as one of the present inventions: and the arc-shaped adjusting plate is provided with a locking hole matched with the fixing bolt.
Further optimization of an intramedullary fixation system of a tubular bone fracture absorbable material as one of the present inventions: and an anti-skid groove is arranged on the outer side of the arc-shaped adjusting plate.
Further optimization of an intramedullary fixation system of a tubular bone fracture absorbable material as one of the present inventions: the outer surface of the arc-shaped adjusting plate is provided with inverted teeth.
Advantageous effects
The intramedullary fixation system of the tubular bone fracture absorbable material of the invention comprises:
firstly, the mechanics principle is optimized, the intramedullary nail is cylindrical, a unilateral fixing mode is not adopted any more, the traditional fixing mode at present is changed, the intramedullary nail is fixed tightly against the inner wall of a bone, and the mechanics is optimized during fixing;
secondly, the trauma is small, only the fracture ends are exposed in the operation process, the two fracture ends are respectively expanded and implanted into the main nails, the positions of the main nails are adjusted, the bolts are fixed, the operation can be finished, and in addition, for children, the intramedullary fixation can be carried out under the condition of not influencing epiphysis;
the invention can properly adjust the diameter according to the size of the bone cavity, enhance the fit degree of the bone cavity and the bone cavity, and can meet the requirements of different fracture parts of different people with a small number of models, thereby greatly improving the application range of the bone cavity.
Fourth, compared with the traditional mode, the absorbable material is adopted, the internal fixation is not needed to be taken out after the operation, and the secondary operation is reduced.
Drawings
FIG. 1 is a schematic radial cross-sectional view of a primary staple in an initial state;
FIG. 2 is an axial cross-sectional schematic view of the primary staple in an initial state;
FIG. 3 is a schematic radial cross-sectional view of the primary staple at its maximum diameter;
FIG. 4 is a schematic axial cross-section of the main staple at its maximum diameter;
FIG. 5 is a schematic axial cross-section of the initial state of the primary staple containing the sleeve
The marks in the figure: 1. the main nail, 2, axial push rod, 3, adjusting bolt, 4, radial push rod, 5, arc regulating plate, 6, sleeve, 7, support column.
Detailed Description
The following detailed description of the invention refers to the accompanying drawings and preferred embodiments.
As shown in the figure: an intramedullary fixation system for absorbable materials for tubular bone fracture comprises an intramedullary nail made of absorbable materials and a plurality of fixing bolts, wherein the intramedullary nail is fixed with tubular bone through the fixing bolts. The intramedullary nail comprises a main nail body 1 and an adjusting component, wherein the main nail body 1 is in a cylinder shape, a plurality of connecting holes are uniformly formed in the circumferential direction of two ends of the cylinder wall of the main nail body 1, an adjusting threaded hole is formed in the middle of the cylinder wall, and the adjusting threaded hole can be in threaded connection with an adjusting bolt 3. The adjusting assembly specifically comprises an adjusting bolt 3 and two adjusting units which are oppositely arranged, wherein the adjusting bolt 3 is screwed into the main nail body 1 through an adjusting threaded hole in the main nail body 1, and one end of the adjusting bolt 3, which is screwed into the main nail body 1, is provided with a first conical pointed head. The adjusting bolt 3 is gradually screwed into the main nail body 1, and the change of the adjusting unit is controlled by the diameter change of the first conical tip. The adjusting unit comprises an axial pushing rod 2, radial pushing rods 4 and an arc-shaped adjusting plate 5, wherein the axial pushing rod 2 is positioned in the middle of the inside of the main nail body 1 and extends along the axial direction of the main nail body 1, one end, far away from the adjusting bolt 3, of the axial pushing rod 2 is provided with a second conical pointed head, a plurality of radial pushing rods 4 are uniformly distributed along the circumferential direction of the second conical pointed head on the axial pushing rod 2, one end, far away from the axial pushing rod 2, of each radial pushing rod 4 extends out through a connecting hole and is fixedly connected with the arc-shaped adjusting plate 5. The axial pushing rod 2 can push the radial pushing rod 4 to move along the radial direction of the main nail body 1 through the diameter change of the second conical tip, and the arc-shaped adjusting plate 5 is gradually far away from the main nail body 1, so that the diameter of the intramedullary nail is increased.
The absorbable intramedullary nail is fixed tightly to the inner wall of the bone cavity, so that the mechanics can be optimized during fixation, and the strength required by the fixation of the tubular bone fracture can be achieved. The intramedullary nail is located the inside centre of main nail body 1 under initial condition axial push rod 2, and adjusting bolt 3 inserts the adjustment screw hole on the main nail body 1 section of thick bamboo wall, and arc regulating plate 5 hugs closely in main nail body 1 section of thick bamboo wall outside, and radial push rod 4 is located main nail body 1 entirely and the toper tip end circumference on axial push rod 2 equally divide and distribute. When both ends of the intramedullary nail are inserted into the bone cavity, if the bone cavity is slightly larger than the diameter of the intramedullary nail, the adjusting bolt 3 is screwed into the main nail body 1, the first conical tip on the adjusting bolt 3 moves radially, the radial section diameter of the first conical tip is larger and larger along with the axial movement of the axial pushing rod 2, and meanwhile, the second conical tip on the axial pushing rod 2 pushes the radial pushing rod 4 to move radially, the arc-shaped adjusting plate 5 is driven to move towards the outer side of the main nail body 1, and when the arc-shaped adjusting plate 5 contacts the inner wall of the bone cavity, the screw-in adjusting bolt 3 is stopped, so that the diameter of the intramedullary nail is adjusted, and the adaptation degree of the intramedullary nail and the diameter of the bone cavity is improved. The range of the adjustable diameter of the intramedullary nail is realized according to the cooperation of the diameter size of the adjusting bolt 3 and the diameter size of the axial pushing rod 2. Therefore, in practical application, according to the fracture part, the method can be divided into: the intramedullary nails of each part can be subdivided into models according to age stages and the like, and the intramedullary nail of each model can be formulated into a proper diameter range according to the size range of a tubular bone cavity of a human body so as to realize the optimal adaptation effect of the intramedullary nail.
Wherein, the radial pushing rod 4 and the arc-shaped adjusting plate 5 fixedly connected with the radial pushing rod are not as much as possible, and three or four are suitable. Only two radial pushing rods 4 and an arc-shaped adjusting plate 5 are arranged, so that the fit degree of the intramedullary nail and the inner wall of the bone cavity is insufficient, the fixing strength is reduced, and fracture and internal fixing failure can be caused. If the number of the two push rods is more than four, firstly, material waste is caused, secondly, the radial movement of the radial push rods 4 is influenced, and the fit degree of the intramedullary nail and the inner wall of the bone cavity is insufficient, so that the fixation strength of the intramedullary nail is reduced, and the intramedullary nail is possibly broken, so that the internal fixation is invalid.
In addition, the diameter of the radial pushing rod 4 cannot be too small, because the radial pushing rod 4 plays a role in supporting the bone cavity in addition to pushing the arc-shaped adjusting plate 5 to be attached to the inner wall of the bone cavity, and the fixation strength of the intramedullary nail is increased.
In order to keep the axial push rod 2 always in the middle inside the main spike body 1, the following way can be adopted:
mode one: the main nail comprises a main nail body 1, an inner core of absorbable material is embedded in the main nail body 1, an axial blind hole extending in the axial direction is formed in the inner core, an adjusting blind hole extending in the radial direction is formed in the middle of the inner core in an embedded mode, the adjusting blind hole corresponds to the adjusting threaded hole, threads are arranged on the wall of the opening end of the adjusting blind hole, an adjusting bolt 3 is screwed into the adjusting blind hole, a plurality of connecting blind holes extending in the radial direction are uniformly formed in the circumferential direction at two ends of the inner core, the connecting blind holes correspond to the connecting holes, and a radial pushing rod 4 extends out of the main nail body 1 through the connecting blind holes and is fixedly connected with an arc-shaped adjusting plate 5. Wherein, the inner core is nested in the main nail body 1, which also plays a role in supporting the bone cavity, and greatly increases the fixation strength of the intramedullary nail.
Mode two: the sleeve 6 is sleeved outside the axial pushing rod 2, two symmetrical support columns 7 are fixedly connected in the radial direction of the sleeve 6, and one end, far away from the sleeve 6, of each support column 7 is fixedly connected with the inner wall of the main nail 7. The sleeve does not influence the axial push rod to move in the axial direction, and the symmetrical support columns can keep the axial push rod 2 positioned in the middle of the inside of the main nail body 1 all the time, also play a certain supporting role on a bone cavity, and strengthen the fixation strength of the intramedullary nail.
In order to facilitate the movement of the axial pushing rod 2 pushed by the adjusting bolt 3, a chute matched with the axial pushing rod 2 for sliding is formed in the conical tip of the adjusting bolt 3. The conical tip of the adjusting bolt 3 is provided with a sliding groove to limit the sliding path of the axial pushing rod 2, so that the axial pushing rod can move axially to the maximum extent.
In order to facilitate the axial pushing rod 2 to push the radial pushing rod 4 to move, a sliding groove matched with the radial pushing rod 4 to slide is formed in the conical tip of the axial pushing rod 2. The tapered tip of the axial push rod 2 is provided with a chute which limits the sliding path of the radial push rod 2, so that the radial push rod can move radially to the maximum extent, and the intramedullary nail can be enlarged to the maximum diameter of the model.
In order to facilitate the adjustment of the intramedullary nail position during the actual operation, a circumferentially extending indication line is provided in the middle of the main nail body 1, and a surgeon performing the operation can adjust the intramedullary nail to the central position according to the indication line.
In order to facilitate the fixation of the fixing bolt, the arc-shaped adjusting plate 5 is provided with a locking hole matched with the fixing bolt, and the flat head tap can realize the fixation of the fixing bolt without tapping the intramedullary nail.
When the fixing bolts fix the intramedullary nail and the bone, the fixing bolts can be uniformly distributed along the circumferential direction of the intramedullary nail, one end of the intramedullary nail is at least respectively fixed with two fixing bolts, and the more the fixing bolts, the larger the fixing strength of the intramedullary nail, but the more the fixing bolts are, the larger the surrounding pressure of the fixing bolts is, and the blood circulation can be influenced. The number of the fixing bolts at one end of the intramedullary nail can be more proper than that of the arc-shaped adjusting plates 5, thereby ensuring the fixing strength of the intramedullary nail and avoiding affecting the blood circulation.
In order to enhance the friction force between the intramedullary nail and the bone cavity and reduce the probability of the intramedullary nail moving in the bone cavity, the outer side of the arc-shaped adjusting plate 5 is provided with an anti-skid groove. In addition, the outer surface of the arc-shaped adjusting plate 5 is provided with inverted teeth, so that the purpose can be achieved. When the intramedullary nail is inserted into the bone cavity, the intramedullary nail is easy to move due to the following teeth, and after the fracture is fixed, the intramedullary nail surface is difficult to move due to the inverted teeth, so that the fixing effect is enhanced.
The application method of the intramedullary fixation system of the tubular bone fracture absorbable material comprises the following steps: when a tubular bone is fractured, firstly taking a longitudinal incision with a fracture end as the center, after exposing the fracture end, cleaning the fracture end, expanding marrow by using a corresponding marrow expanding drill, selecting an intramedullary nail with a proper model, fully implanting the intramedullary nail into a marrow cavity, cleaning another fracture end, expanding marrow by using the marrow expanding drill with the same size in the same mode, adjusting the diameter by using an adjusting bolt, resetting the fracture, adjusting the intramedullary nail to the central position by using an indicating line, finely adjusting the adjusting bolt again, pressurizing the fracture end by using a pressurizing clamp, drilling through a single-side cortex on two sides of the fracture line by using a limiting drill bit respectively, screwing a fixing bolt after tapping by using a flat head tap, and fixing the intramedullary nail with bone.
The present invention is not limited to the above-mentioned embodiments, but is intended to be limited to the following embodiments, and any modifications, equivalent changes and variations in the above-mentioned embodiments can be made by those skilled in the art without departing from the scope of the present invention.
Claims (9)
1. An absorbable material intramedullary fixation system for tubular bone fracture, comprising an absorbable material intramedullary nail and a plurality of fixing bolts, and is characterized in that: the intramedullary nail comprises a main nail body (1) and an adjusting assembly, wherein the main nail body (1) is cylindrical, a plurality of connecting holes are uniformly formed in the circumferential direction at two ends of the cylinder wall of the main nail body (1), and an adjusting threaded hole is formed in the middle of the cylinder wall; the adjusting assembly comprises an adjusting bolt (3) and two adjusting units which are oppositely arranged, the adjusting bolt (3) is screwed into the main nail body (1) through an adjusting threaded hole in the main nail body (1), one end of the adjusting bolt (3) in the main nail body (1) is provided with a first conical tip, the adjusting unit comprises an axial pushing rod (2), a radial pushing rod (4) and an arc-shaped adjusting plate (5), the axial pushing rod (2) is positioned in the middle of the main nail body (1) and axially extends along the main nail body (1), one end of the axial pushing rod (2) away from the adjusting bolt (3) is provided with a second conical tip, a plurality of radial pushing rods (4) are uniformly distributed along the circumference of the second conical tip on the axial pushing rod (2), and one end of the radial pushing rod (4) away from the axial pushing rod (2) extends out through a connecting hole and is fixedly connected with the arc-shaped adjusting plate (5).
2. An intramedullary fixation system of a tubular bone fracture resorbable material of claim 1, wherein: the main nail comprises a main nail body (1), an absorbable material inner core is embedded in the main nail body (1), an axial blind hole extending in the axial direction is formed in the inner core, an axial pushing rod (2) is embedded in the axial blind hole, a radially extending adjusting blind hole is formed in the middle of the inner core, the adjusting blind hole corresponds to the adjusting threaded hole, threads are arranged on the wall of an opening end of the adjusting blind hole, an adjusting bolt (3) is screwed into the adjusting blind hole, a plurality of radially extending connecting blind holes are uniformly formed in the two ends of the inner core in the circumferential direction, the connecting blind holes correspond to the connecting holes, and the radial pushing rod (4) extends out of the main nail body (1) through the connecting blind holes and is fixedly connected with an arc-shaped adjusting plate (5), and the adjusting blind holes and the connecting blind holes are respectively intersected with the axial blind holes.
3. An intramedullary fixation system of a tubular bone fracture resorbable material of claim 1, wherein: the sleeve (6) is sleeved outside the axial pushing rod (2), two symmetrical support columns (7) are fixedly connected to the sleeve (6) in the radial direction, and one end, away from the sleeve (6), of each support column (7) is fixedly connected with the inner wall of the main nail body (1).
4. An intramedullary fixation system of a tubular bone fracture resorbable material of claim 1, wherein: a sliding groove matched with the axial pushing rod (2) for sliding is formed in the first conical tip on the adjusting bolt (3).
5. An intramedullary fixation system of a tubular bone fracture resorbable material of claim 1, wherein: a sliding groove matched with the radial pushing rod (4) for sliding is formed in the second conical tip on the axial pushing rod (2).
6. An intramedullary fixation system of a tubular bone fracture resorbable material of claim 1, wherein: an indication line extending along the circumferential direction is arranged in the middle of the main nail body (1).
7. An intramedullary fixation system of a tubular bone fracture resorbable material of claim 1, wherein: and the arc-shaped adjusting plate (5) is provided with a locking hole matched with the fixing bolt.
8. An intramedullary fixation system of a tubular bone fracture resorbable material of claim 1, wherein: an anti-skid groove is arranged on the outer side of the arc-shaped adjusting plate (5).
9. An intramedullary fixation system of a tubular bone fracture resorbable material of claim 1, wherein: the outer surface of the arc-shaped adjusting plate (5) is provided with inverted teeth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111492486.1A CN114145829B (en) | 2021-12-08 | 2021-12-08 | Intramedullary fixation system for absorbable material for tubular bone fracture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111492486.1A CN114145829B (en) | 2021-12-08 | 2021-12-08 | Intramedullary fixation system for absorbable material for tubular bone fracture |
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| CN114145829B true CN114145829B (en) | 2023-05-23 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203468725U (en) * | 2013-09-09 | 2014-03-12 | 中国人民解放军第四军医大学 | Dilated hip screw of proximal femoral intramedullary nail |
| CN106413606A (en) * | 2013-11-13 | 2017-02-15 | Mx矫形外科公司 | Intramedullary devices for generating and applying compression within a body |
| CN108778152A (en) * | 2016-03-18 | 2018-11-09 | 科廷大学 | Expansible fastener for plastic surgery application |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2391062C (en) * | 1999-11-11 | 2008-01-08 | Synthes (U.S.A.) | Radially expandable intramedullary nail |
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- 2021-12-08 CN CN202111492486.1A patent/CN114145829B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203468725U (en) * | 2013-09-09 | 2014-03-12 | 中国人民解放军第四军医大学 | Dilated hip screw of proximal femoral intramedullary nail |
| CN106413606A (en) * | 2013-11-13 | 2017-02-15 | Mx矫形外科公司 | Intramedullary devices for generating and applying compression within a body |
| CN108778152A (en) * | 2016-03-18 | 2018-11-09 | 科廷大学 | Expansible fastener for plastic surgery application |
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| CN114145829A (en) | 2022-03-08 |
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