CN110693589B - Anti-sway intramedullary nail - Google Patents
Anti-sway intramedullary nail Download PDFInfo
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- CN110693589B CN110693589B CN201911007489.4A CN201911007489A CN110693589B CN 110693589 B CN110693589 B CN 110693589B CN 201911007489 A CN201911007489 A CN 201911007489A CN 110693589 B CN110693589 B CN 110693589B
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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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
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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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/90—Guides therefor
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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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
- A61B17/921—Impactors or extractors, e.g. for removing intramedullary devices for intramedullary devices
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Abstract
An intramedullary nail for preventing shaking comprises an intramedullary nail, a fixing structure which is arranged in the intramedullary nail and used for preventing the intramedullary nail from shaking, an operating rod used for putting in and taking out the fixing structure, and a sighting device which is matched with the intramedullary nail and the operating rod for use, and is characterized in that the fixing structure comprises a spring plate with a convex part; the intramedullary nail is a cavity intramedullary nail, a through hole allowing the elastic sheet with the convex part to extend out is arranged on the side wall of the intramedullary nail, and the elastic sheet with the convex part extends out of the through hole and is fixed on the wall of the cavity of the marrow; the operating rod is combined and connected with the fixing structure, and the sighting device is combined and connected with the intramedullary nail and the operating rod; through set up fixed knot structure in the cavity intramedullary nail, the shell fragment of taking the bulge part on the fixed knot structure stretches out from the through-going mouth and fixes on the lateral wall of marrow cavity to the position of fixed intramedullary nail guarantees the stability of intramedullary nail in the marrow cavity, prevents effectively that the intramedullary nail from taking place to rock.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to an intramedullary nail capable of preventing shaking.
Background
Intramedullary nail internal fixation is often used for long-tube bone (such as femur, humerus, ulna, tibia, radius, etc.) diaphysis fracture. The advantages are that: the intramedullary nail is firm and firm, can be fixed with little or no external fixation after operation, and is beneficial to the early movement and exercise of injured limbs; the skin incision is small, the periosteum stripping range is limited, and the damage is small; the axial force line of the fracture part can be controlled, the locked intramedullary nail can prevent the fracture rotation deformity, and the risk of the fracture of the built-in object is reduced; the closed and minimally invasive technology is adopted, so that the surgical infection rate is reduced; reducing damage to periosteum blood circulation, retaining growth factors with osteogenesis effect in hematoma, expanding marrow debris with autologous bone grafting effect, and promoting fracture healing by using factors such as micro-motion generated by muscle contraction to provide mechanical stimulation; the center fixation, the elastic fixation and the stress dispersion avoid the stress shielding effect, and the incidence rate of the re-fracture is low.
Although intramedullary nails have many advantages, in the clinical practice, the intramedullary nails may have slight position deviation or shaking in the medullary cavity, resulting in the formation of bone nonunions or angulations of the fractured ends.
The invention provides an intramedullary nail capable of preventing shaking, aiming at the problem that in the clinical practical application process, the intramedullary nail generates slight position deviation or shaking in a medullary cavity to cause the formation of bone nonunion or angulation of a broken end although the intramedullary nail has a plurality of advantages in the prior art.
Disclosure of Invention
In order to overcome the problems that in the prior art, although the intramedullary nail has a plurality of advantages, in the clinical practical application process, the intramedullary nail is slightly shifted or shaken in the medullary cavity, so that the bone is not connected or the broken end is angled, the invention provides the intramedullary nail for preventing shaking.
An intramedullary nail for preventing shaking comprises an intramedullary nail, a fixing structure which is arranged in the intramedullary nail and used for preventing the intramedullary nail from shaking, an operating rod used for putting in and taking out the fixing structure, and a sighting device which is matched with the intramedullary nail and the operating rod for use, and is characterized in that the fixing structure comprises a spring plate with a convex part; the intramedullary nail is a cavity intramedullary nail, a through hole allowing the elastic sheet with the convex part to extend out is arranged on the side wall of the intramedullary nail, and the elastic sheet with the convex part extends out of the through hole and is fixed on the wall of the cavity of the marrow; the operating rod is combined and connected with the fixing structure, and the sighting device is combined and connected with the intramedullary nail and the operating rod; through set up fixed knot structure in the cavity intramedullary nail, the shell fragment of taking the bulge part on the fixed knot structure stretches out from running through the mouth and fixes on the lateral wall of marrow cavity to the position of fixed intramedullary nail guarantees the stability of intramedullary nail in the marrow cavity, prevents effectively that the intramedullary nail from taking place to rock, avoids taking place unnecessary complication, guarantees treatment.
Furthermore, the intramedullary nail is a cavity intramedullary nail with a cylindrical main body, the rear end of the intramedullary nail, namely one end close to an operator, is provided with an external thread, and the rear end of the intramedullary nail is connected with the sighting device in a combined way; the intramedullary nail is conveniently placed in the marrow cavity of a patient and can be quickly and combinatively connected with the sighting device.
Furthermore, the diameter of the front end of the intramedullary nail is smaller than that of the main body of the intramedullary nail, 2 or 4 circular nail holes are respectively arranged at the front end and the rear end of the intramedullary nail, and locking screws which are commonly used in clinic are arranged in the circular nail holes; the arrangement can stably fix the intramedullary nail in the marrow cavity and prevent micromotion.
Furthermore, the through hole is a rectangular through hole, the length of the through hole is smaller than that of the intramedullary nail, the width of the through hole is smaller than the diameter of the intramedullary nail, and the size of the through hole is larger than that of the elastic sheet with the protruding part; the arrangement can ensure that the elastic sheet with the convex part smoothly extends out of the through hole.
Furthermore, the fixing structure comprises a connecting section and a spring plate with a protruding part, the connecting section is connected with the spring plate with the protruding part, and the connecting section is positioned at the rear end of the spring plate with the protruding part; the connecting section is connected with the operating rod in a combined manner; the fixing structure is convenient to be placed in the intramedullary nail.
Furthermore, the main body of the connecting section is cylindrical, and the elastic sheet with the protruding part is arranged at the front end of the connecting section; the elastic sheet with the convex parts comprises elastic sheets arranged on two sides of the front end of the connecting section and convex parts respectively arranged on the outer side walls of the elastic sheets on the two sides, and the convex parts are respectively connected with the outer side walls of the elastic sheets on the two sides; the convex part can extend out of the through hole under the action of elastic force of the elastic sheet so as to be fixed on the wall of the marrow cavity.
Furthermore, the elastic sheet is made of a medical metal material with elasticity, and the connecting section is made of a medical metal material; the elastic sheet has elasticity and firmness.
Further, the length of the fixation structure is smaller than the length of the intramedullary nail, and the diameter of the fixation structure is smaller than the inner diameter of the intramedullary nail; the fixing structure can be smoothly placed into the intramedullary nail.
Furthermore, the protruding part is arranged to be a trapezoidal block, the larger surface of the trapezoidal block is connected with the outer side wall of the elastic sheet, the smaller surface of the trapezoidal block extends out of the through hole, and the edge of the trapezoidal block is arranged to be an edge with a smooth surface; the convex part is easy to extend out or retract into the intramedullary nail, the operation is simple, and the efficiency and the time are saved.
Furthermore, an anti-moving gasket for enhancing the stability of the connecting section is arranged on the outer side wall of the rear end of the connecting section, namely the end close to the operator, and is an annular ring made of medical silica gel material and connected with the outer side wall of the rear end of the connecting section; the anti-moving washer has certain elasticity, can deform to a certain degree due to extrusion, cannot prevent the fixing structure from entering the intramedullary nail, and can further enhance the stability of the fixing structure after the fixing structure reaches a designated position.
Furthermore, the operating rod comprises an operating rod main body, an operating handle and a connecting structure, wherein the main body of the operating rod main body is cylindrical, the operating handle is arranged at the rear end of the operating rod main body, the connecting structure is arranged at the front end of the operating rod main body and is used for being connected with the connecting section in a combined mode, the operating handle is connected with the operating rod main body, and the connecting structure is connected with the operating rod main body; the operating rod is connected with the connecting section in a combined mode, and the fixed structure is controlled to move forwards, backwards or rotate by moving the operating rod.
Further, the connecting structure is provided with a hook, and a hook accommodating groove which can accommodate the hook and can allow the hook to rotate 180 degrees in the hook is arranged at the rear end of the connecting section; the couple of this kind of setting gets into the couple holding tank, and rotatory 90 left or right, fixes the couple in the couple holding tank steadily to with the stable built-up connection of action bars and fixed knot structure, can control fixed knot through the action bars and construct.
Further, the direction of the operating handle is perpendicular to the direction of the operating rod main body, and the operating handle is a handle with a rectangular main body; the operating handle is convenient for an operator to hold the operating rod.
Further, the sighting device comprises a connecting pipe connected with the intramedullary nail, a horizontal pipe used for providing a channel for a fixing structure or an operating rod, and a C-shaped handle arranged at the lower end of the horizontal pipe; the connecting pipe is connected with the horizontal pipe, and the C-shaped handle is connected with the horizontal pipe; the sighting device with the arrangement can allow the fixing structure and the operating rod to enter or withdraw, provide accurate position navigation for the embedding fixing structure, and ensure that the fixing structure does not have position deviation in the embedding process.
Furthermore, the front end of the connecting pipe is provided with an internal thread matched with the external thread at the rear end of the intramedullary nail, and the connecting pipe is connected with the intramedullary nail through a thread combination; the diameter of the connecting pipe is larger than that of the intramedullary nail, and the diameter of the horizontal pipe is the same as that of the connecting pipe; this arrangement ensures that the fixed structure or the operating rod smoothly enters the horizontal pipe.
During the use, at first put the intramedullary nail into patient's marrow intracavity, then with action bars and fixed knot construct the built-up connection, fixed knot constructs the straight tube from the sight and gets into, fixed knot constructs the bulge and the intramedullary nail runs through the direction of mouth perpendicular this moment, the bulge is because the inside convergence of extrusion of pipe wall, fixed subassembly passes straight tube and connecting pipe and gets into the intramedullary nail, when fixed knot constructs the suitable position of running through the mouth, through the action bars with fixed knot construct rotatory 90 make bulge unanimous with the direction of running through the mouth, the bulge stretches out the running through mouth in the department of running through owing to the disappearance of extrusion force and the effect of self elasticity, the bulge is fixed on the marrow chamber wall, thereby guarantee the stability of intramedullary nail in the marrow intracavity.
Compared with the intramedullary nail in the prior art, the technical scheme of the invention ensures the stability of the intramedullary nail by arranging the fixing structure in the intramedullary nail, avoids the problem that the intramedullary nail generates micro motion in the marrow cavity to cause the patient to have bone nonunion or angulation of the broken end, and in addition, when in use, the fixing structure can be pushed to a proper position according to different fracture conditions of different patients and then the convex part is released, so that the intramedullary nail has flexible selectivity and wide applicability, is simple to operate, is efficient and time-saving, and is beneficial to improving the operation effect.
Drawings
FIG. 1 is a schematic view of the overall structure of an anti-wobbling intramedullary nail according to the present invention;
FIG. 2 is a schematic view of the overall cross-sectional structure of an anti-wobbling intramedullary nail according to the present invention;
FIG. 3 is a partially enlarged structural view of a protrusion extending out of a through hole of an anti-wobbling intramedullary nail according to the present invention;
FIG. 4 is a schematic structural view of a connection state of an anti-wobbling intramedullary nail fixation structure and an operation rod according to the present invention;
FIG. 5 is an enlarged structural view of the intramedullary nail fixation structure for preventing wobbling according to the present invention;
FIG. 6 is an enlarged schematic view of the spring plate and the protruding member of the anti-wobbling intramedullary nail fixation structure according to the present invention;
FIG. 7 is an enlarged structural view of the entire intramedullary nail operating rod for preventing wobbling according to the present invention;
FIG. 8 is an enlarged schematic view of the connection between the anti-sway intramedullary nail fixation structure and the operation rod according to the present invention;
FIG. 9 is an enlarged cross-sectional view of the connection between the stabilization structure and the operation rod of the intramedullary nail for preventing wobbling;
FIG. 10 is an enlarged structural view of an intramedullary nail for preventing wobbling according to the present invention;
FIG. 11 is a schematic view of the overall structure of an intramedullary nail aiming device for preventing shaking according to the present invention;
fig. 12 is a schematic left-view structural diagram of an intramedullary nail aiming device for preventing shaking according to the present invention.
In the drawings, 1, an intramedullary nail; 11. a through opening; 12. a circular nail hole; 13. an external thread; 2. a fixed structure; 21. a connecting section; 22. a spring plate; 23. a protruding member; 24. a hook accommodating groove; 25. a motion-preventing washer; 3. an operating lever; 31. hooking; 32. an operating handle; 4. a sight; 41. a connecting pipe; 411. an internal thread; 42. a horizontal tube; 43. a C-shaped handle.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below by specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and other advantages and effects of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification. The present invention can be implemented or applied by other different specific embodiments, and the features in the following embodiments and embodiments can be combined with each other without conflict, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
EXAMPLE 1 intramedullary nail to prevent wobbling
An intramedullary nail for preventing shaking, which comprises an intramedullary nail 1, a fixing structure 2 arranged inside the intramedullary nail 1 and used for preventing the intramedullary nail 1 from shaking, an operating rod 3 used for putting in and taking out the fixing structure 2, and a sighting device 4 used together with the intramedullary nail 1 and a control rod, and is characterized in that the fixing structure 2 comprises a spring plate 22 with a convex part 23; the intramedullary nail 1 is arranged as a cavity intramedullary nail 1, a through hole 11 allowing the elastic sheet 22 with the convex part 23 to extend out is arranged on the side wall of the intramedullary nail 1, and the elastic sheet 22 with the convex part 23 extends out from the through hole 11 and is fixed on the wall of the medullary cavity; the operating rod 3 is combined and connected with the fixing structure 2, and the sighting device 4 is combined and connected with the intramedullary nail 1 and the operating rod 3; through set up fixed knot structure 2 in cavity intramedullary nail 1, the shell fragment 22 of taking projecting part 23 on fixed knot structure 2 stretches out from penetrating mouth 11 and fixes on the marrow cavity lateral wall to the position of fixed intramedullary nail 1 guarantees the stability of intramedullary nail 1 in the marrow cavity, prevents effectively that intramedullary nail 1 from taking place to rock, avoids taking place unnecessary complication, guarantees treatment.
The intramedullary nail 1 is a cavity intramedullary nail 1 with a cylindrical main body, the rear end of the intramedullary nail 1, namely one end close to an operator, is provided with an external thread 13, and the rear end of the intramedullary nail 1 is combined and connected with the sighting device 4; the intramedullary nail 1 arranged in this way is conveniently placed in the marrow cavity of a patient and can be quickly combined and connected with the sighting device 4.
The through hole 11 is a rectangular through hole 11, the length of the through hole 11 is smaller than that of the intramedullary nail 1, the width of the through hole 11 is smaller than the diameter of the intramedullary nail 1, and the size of the through hole 11 is larger than that of the elastic sheet 22 with the protruding part 23; this arrangement ensures that the resilient piece 22 with the protruding part 23 smoothly protrudes from the through opening 11.
The fixing structure 2 comprises a connecting section 21 and a spring plate 22 with a protruding part 23, the connecting section 21 is connected with the spring plate 22 with the protruding part 23, and the connecting section 21 is positioned at the rear end of the spring plate 22 with the protruding part 23; the connecting section 21 is connected with the operating rod 3 in a combined manner; the fixing structure 2 is arranged to be conveniently placed in the intramedullary nail 1.
The length of the fixing structure 2 is smaller than that of the intramedullary nail 1, and the diameter of the fixing structure 2 is smaller than the inner diameter of the intramedullary nail 1; the fixing structure 2 can be smoothly placed into the intramedullary nail 1.
The convex part 23 is a trapezoidal block, the larger surface of the trapezoidal block is connected with the outer side wall of the elastic sheet 22, the smaller surface of the trapezoidal block extends out of the through hole 11, and the edge of the trapezoidal block is provided with a smooth surface edge; the convex part 23 arranged in this way is easy to extend out or retract into the intramedullary nail 1, and has simple operation, high efficiency and time saving.
The operating rod 3 comprises an operating rod 3 main body, an operating handle 32 and a connecting structure, wherein the main body of the operating rod 3 is cylindrical, the operating handle 32 is arranged at the rear end of the operating rod 3 main body, the connecting structure is arranged at the front end of the operating rod 3 main body and is used for being connected with the connecting section 21 in a combined mode, the operating handle 32 is connected with the operating rod 3 main body, and the connecting structure is connected with the operating rod 3 main body; the operating rod 3 is connected with the connecting section 21 in a combined manner, and the fixed structure 2 is controlled to move forwards, backwards or rotate by moving the operating rod 3.
The connecting structure is provided with a hook 31, and a hook accommodating groove 24 which can accommodate the hook 31 and can allow the hook 31 to rotate 180 degrees in the hook accommodating groove is arranged at the rear end of the connecting section 21; the hook 31 of this kind of setting gets into couple holding tank 24, rotates 90 left or right, fixes couple 31 in couple holding tank 24 steadily to with the stable built-up connection of action bars 3 and fixed knot structure 2, can control fixed knot structure 2 through action bars 3.
The aiming device 4 comprises a connecting tube 41 connected with the intramedullary nail 1, a horizontal tube 42 for providing a channel for the fixing structure 2 or the operating rod 3, and a C-shaped handle 43 arranged at the lower end of the horizontal tube 42; the connecting pipe 41 is connected with the horizontal pipe 42, and the C-shaped handle 43 is connected with the horizontal pipe 42; the sighting device 4 arranged in this way can allow the fixing structure 2 and the operating rod 3 to enter or withdraw, provide accurate position navigation for embedding the fixing structure 2 and ensure that the fixing structure 2 does not have position deviation in the embedding process.
The front end of the connecting pipe 41 is provided with an internal thread 411 matched with the external thread 13 at the rear end of the intramedullary nail 1, and the connecting pipe 41 is connected with the intramedullary nail 1 through thread combination; the diameter of the connecting tube 41 is larger than that of the intramedullary nail 1, and the diameter of the horizontal tube 42 is the same as that of the connecting tube 41; this arrangement ensures that the fixed structure 2 or the operating rod 3 smoothly enters the horizontal tube 42.
EXAMPLE 2 an anti-wobbling intramedullary nail
An intramedullary nail for preventing shaking, which comprises an intramedullary nail 1, a fixing structure 2 arranged inside the intramedullary nail 1 and used for preventing the intramedullary nail 1 from shaking, an operating rod 3 used for putting in and taking out the fixing structure 2, and a sighting device 4 used together with the intramedullary nail 1 and a control rod, and is characterized in that the fixing structure 2 comprises a spring plate 22 with a convex part 23; the intramedullary nail 1 is arranged as a cavity intramedullary nail 1, a through hole 11 allowing the elastic sheet 22 with the convex part 23 to extend out is arranged on the side wall of the intramedullary nail 1, and the elastic sheet 22 with the convex part 23 extends out from the through hole 11 and is fixed on the wall of the medullary cavity; the operating rod 3 is combined and connected with the fixing structure 2, and the sighting device 4 is combined and connected with the intramedullary nail 1 and the operating rod 3; through set up fixed knot structure 2 in cavity intramedullary nail 1, the shell fragment 22 of taking projecting part 23 on fixed knot structure 2 stretches out from penetrating mouth 11 and fixes on the marrow cavity lateral wall to the position of fixed intramedullary nail 1 guarantees the stability of intramedullary nail 1 in the marrow cavity, prevents effectively that intramedullary nail 1 from taking place to rock, avoids taking place unnecessary complication, guarantees treatment.
The intramedullary nail 1 is a cavity intramedullary nail 1 with a cylindrical main body, the rear end of the intramedullary nail 1, namely one end close to an operator, is provided with an external thread 13, and the rear end of the intramedullary nail 1 is combined and connected with the sighting device 4; the intramedullary nail 1 arranged in this way is conveniently placed in the marrow cavity of a patient and can be quickly combined and connected with the sighting device 4.
The diameter of the front end of the intramedullary nail 1 is smaller than that of the main body of the intramedullary nail 1, 4 circular nail holes 12 are respectively arranged at the front end and the rear end of the intramedullary nail 1, and locking screws which are commonly used in clinic are arranged in the circular nail holes 12; this arrangement stably fixes the intramedullary nail 1 within the medullary cavity, preventing micromotion.
The through hole 11 is a rectangular through hole 11, the length of the through hole 11 is smaller than that of the intramedullary nail 1, the width of the through hole 11 is smaller than the diameter of the intramedullary nail 1, and the size of the through hole 11 is larger than that of the elastic sheet 22 with the protruding part 23; this arrangement ensures that the resilient piece 22 with the protruding part 23 smoothly protrudes from the through opening 11.
The fixing structure 2 comprises a connecting section 21 and a spring plate 22 with a protruding part 23, the connecting section 21 is connected with the spring plate 22 with the protruding part 23, and the connecting section 21 is positioned at the rear end of the spring plate 22 with the protruding part 23; the connecting section 21 is connected with the operating rod 3 in a combined manner; the fixing structure 2 is arranged to be conveniently placed in the intramedullary nail 1.
The length of the fixing structure 2 is smaller than that of the intramedullary nail 1, and the diameter of the fixing structure 2 is smaller than the inner diameter of the intramedullary nail 1; the fixing structure 2 can be smoothly placed into the intramedullary nail 1.
The convex part 23 is a trapezoidal block, the larger surface of the trapezoidal block is connected with the outer side wall of the elastic sheet 22, the smaller surface of the trapezoidal block extends out of the through hole 11, and the edge of the trapezoidal block is provided with a smooth surface edge; the convex part 23 arranged in this way is easy to extend out or retract into the intramedullary nail 1, and has simple operation, high efficiency and time saving.
The operating rod 3 comprises an operating rod 3 main body, an operating handle 32 and a connecting structure, wherein the main body of the operating rod 3 is cylindrical, the operating handle 32 is arranged at the rear end of the operating rod 3 main body, the connecting structure is arranged at the front end of the operating rod 3 main body and is used for being connected with the connecting section 21 in a combined mode, the operating handle 32 is connected with the operating rod 3 main body, and the connecting structure is connected with the operating rod 3 main body; the operating rod 3 is connected with the connecting section 21 in a combined manner, and the fixed structure 2 is controlled to move forwards, backwards or rotate by moving the operating rod 3.
The connecting structure is provided with a hook 31, and a hook accommodating groove 24 which can accommodate the hook 31 and can allow the hook 31 to rotate 180 degrees in the hook accommodating groove is arranged at the rear end of the connecting section 21; the hook 31 of this kind of setting gets into couple holding tank 24, rotates 90 left or right, fixes couple 31 in couple holding tank 24 steadily to with the stable built-up connection of action bars 3 and fixed knot structure 2, can control fixed knot structure 2 through action bars 3.
The aiming device 4 comprises a connecting tube 41 connected with the intramedullary nail 1, a horizontal tube 42 for providing a channel for the fixing structure 2 or the operating rod 3, and a C-shaped handle 43 arranged at the lower end of the horizontal tube 42; the connecting pipe 41 is connected with the horizontal pipe 42, and the C-shaped handle 43 is connected with the horizontal pipe 42; the sighting device 4 arranged in this way can allow the fixing structure 2 and the operating rod 3 to enter or withdraw, provide accurate position navigation for embedding the fixing structure 2 and ensure that the fixing structure 2 does not have position deviation in the embedding process.
The front end of the connecting pipe 41 is provided with an internal thread 411 matched with the external thread 13 at the rear end of the intramedullary nail 1, and the connecting pipe 41 is connected with the intramedullary nail 1 through thread combination; the diameter of the connecting tube 41 is larger than that of the intramedullary nail 1, and the diameter of the horizontal tube 42 is the same as that of the connecting tube 41; this arrangement ensures that the fixed structure 2 or the operating rod 3 smoothly enters the horizontal tube 42.
EXAMPLE 3 an anti-wobbling intramedullary nail
An intramedullary nail for preventing shaking, which comprises an intramedullary nail 1, a fixing structure 2 arranged inside the intramedullary nail 1 and used for preventing the intramedullary nail 1 from shaking, an operating rod 3 used for putting in and taking out the fixing structure 2, and a sighting device 4 used together with the intramedullary nail 1 and a control rod, and is characterized in that the fixing structure 2 comprises a spring plate 22 with a convex part 23; the intramedullary nail 1 is arranged as a cavity intramedullary nail 1, a through hole 11 allowing the elastic sheet 22 with the convex part 23 to extend out is arranged on the side wall of the intramedullary nail 1, and the elastic sheet 22 with the convex part 23 extends out from the through hole 11 and is fixed on the wall of the medullary cavity; the operating rod 3 is combined and connected with the fixing structure 2, and the sighting device 4 is combined and connected with the intramedullary nail 1 and the operating rod 3; through set up fixed knot structure 2 in cavity intramedullary nail 1, the shell fragment 22 of taking projecting part 23 on fixed knot structure 2 stretches out from penetrating mouth 11 and fixes on the marrow cavity lateral wall to the position of fixed intramedullary nail 1 guarantees the stability of intramedullary nail 1 in the marrow cavity, prevents effectively that intramedullary nail 1 from taking place to rock, avoids taking place unnecessary complication, guarantees treatment.
The intramedullary nail 1 is a cavity intramedullary nail 1 with a cylindrical main body, the rear end of the intramedullary nail 1, namely one end close to an operator, is provided with an external thread 13, and the rear end of the intramedullary nail 1 is combined and connected with the sighting device 4; the intramedullary nail 1 arranged in this way is conveniently placed in the marrow cavity of a patient and can be quickly combined and connected with the sighting device 4.
The diameter of the front end of the intramedullary nail 1 is smaller than that of the main body of the intramedullary nail 1, 2 circular nail holes 12 are respectively arranged at the front end and the rear end of the intramedullary nail 1, and locking screws which are commonly used in clinic are arranged in the circular nail holes 12; this arrangement stably fixes the intramedullary nail 1 within the medullary cavity, preventing micromotion.
The through hole 11 is a rectangular through hole 11, the length of the through hole 11 is smaller than that of the intramedullary nail 1, the width of the through hole 11 is smaller than the diameter of the intramedullary nail 1, and the size of the through hole 11 is larger than that of the elastic sheet 22 with the protruding part 23; this arrangement ensures that the resilient piece 22 with the protruding part 23 smoothly protrudes from the through opening 11.
The fixing structure 2 comprises a connecting section 21 and a spring plate 22 with a protruding part 23, the connecting section 21 is connected with the spring plate 22 with the protruding part 23, and the connecting section 21 is positioned at the rear end of the spring plate 22 with the protruding part 23; the connecting section 21 is connected with the operating rod 3 in a combined manner; the fixing structure 2 is arranged to be conveniently placed in the intramedullary nail 1.
The main body of the connecting section 21 is cylindrical, and the elastic sheet 22 with the protruding part 23 is arranged at the front end of the connecting section 21; the elastic sheet 22 with the protruding parts 23 comprises elastic sheets 22 arranged on two sides of the front end of the connecting section 21 and protruding parts 23 respectively arranged on the outer side walls of the elastic sheets 22 on the two sides, and the protruding parts 23 are respectively connected with the outer side walls of the elastic sheets 22 on the two sides; the protruding part 23 is fixed on the medullary cavity wall by extending out of the through-hole 11 under the elastic force of the elastic sheet 22.
The elastic sheet 22 is made of a medical metal material with elasticity, and the connecting section 21 is made of a medical metal material; the elastic sheet 22 has elasticity and firmness.
The length of the fixing structure 2 is smaller than that of the intramedullary nail 1, and the diameter of the fixing structure 2 is smaller than the inner diameter of the intramedullary nail 1; the fixing structure 2 can be smoothly placed into the intramedullary nail 1.
The convex part 23 is a trapezoidal block, the larger surface of the trapezoidal block is connected with the outer side wall of the elastic sheet 22, the smaller surface of the trapezoidal block extends out of the through hole 11, and the edge of the trapezoidal block is provided with a smooth surface edge; the convex part 23 arranged in this way is easy to extend out or retract into the intramedullary nail 1, and has simple operation, high efficiency and time saving.
The operating rod 3 comprises an operating rod 3 main body, an operating handle 32 and a connecting structure, wherein the main body of the operating rod 3 is cylindrical, the operating handle 32 is arranged at the rear end of the operating rod 3 main body, the connecting structure is arranged at the front end of the operating rod 3 main body and is used for being connected with the connecting section 21 in a combined mode, the operating handle 32 is connected with the operating rod 3 main body, and the connecting structure is connected with the operating rod 3 main body; the operating rod 3 is connected with the connecting section 21 in a combined manner, and the fixed structure 2 is controlled to move forwards, backwards or rotate by moving the operating rod 3.
The connecting structure is provided with a hook 31, and a hook accommodating groove 24 which can accommodate the hook 31 and can allow the hook 31 to rotate 180 degrees in the hook accommodating groove is arranged at the rear end of the connecting section 21; the hook 31 of this kind of setting gets into couple holding tank 24, rotates 90 left or right, fixes couple 31 in couple holding tank 24 steadily to with the stable built-up connection of action bars 3 and fixed knot structure 2, can control fixed knot structure 2 through action bars 3.
The aiming device 4 comprises a connecting tube 41 connected with the intramedullary nail 1, a horizontal tube 42 for providing a channel for the fixing structure 2 or the operating rod 3, and a C-shaped handle 43 arranged at the lower end of the horizontal tube 42; the connecting pipe 41 is connected with the horizontal pipe 42, and the C-shaped handle 43 is connected with the horizontal pipe 42; the sighting device 4 arranged in this way can allow the fixing structure 2 and the operating rod 3 to enter or withdraw, provide accurate position navigation for embedding the fixing structure 2 and ensure that the fixing structure 2 does not have position deviation in the embedding process.
The front end of the connecting pipe 41 is provided with an internal thread 411 matched with the external thread 13 at the rear end of the intramedullary nail 1, and the connecting pipe 41 is connected with the intramedullary nail 1 through thread combination; the diameter of the connecting tube 41 is larger than that of the intramedullary nail 1, and the diameter of the horizontal tube 42 is the same as that of the connecting tube 41; this arrangement ensures that the fixed structure 2 or the operating rod 3 smoothly enters the horizontal tube 42.
EXAMPLE 4 an anti-wobbling intramedullary nail
An intramedullary nail for preventing shaking, which comprises an intramedullary nail 1, a fixing structure 2 arranged inside the intramedullary nail 1 and used for preventing the intramedullary nail 1 from shaking, an operating rod 3 used for putting in and taking out the fixing structure 2, and a sighting device 4 used together with the intramedullary nail 1 and a control rod, and is characterized in that the fixing structure 2 comprises a spring plate 22 with a convex part 23; the intramedullary nail 1 is arranged as a cavity intramedullary nail 1, a through hole 11 allowing the elastic sheet 22 with the convex part 23 to extend out is arranged on the side wall of the intramedullary nail 1, and the elastic sheet 22 with the convex part 23 extends out from the through hole 11 and is fixed on the wall of the medullary cavity; the operating rod 3 is combined and connected with the fixing structure 2, and the sighting device 4 is combined and connected with the intramedullary nail 1 and the operating rod 3; through set up fixed knot structure 2 in cavity intramedullary nail 1, the shell fragment 22 of taking projecting part 23 on fixed knot structure 2 stretches out from penetrating mouth 11 and fixes on the marrow cavity lateral wall to the position of fixed intramedullary nail 1 guarantees the stability of intramedullary nail 1 in the marrow cavity, prevents effectively that intramedullary nail 1 from taking place to rock, avoids taking place unnecessary complication, guarantees treatment.
The intramedullary nail 1 is a cavity intramedullary nail 1 with a cylindrical main body, the rear end of the intramedullary nail 1, namely one end close to an operator, is provided with an external thread 13, and the rear end of the intramedullary nail 1 is combined and connected with the sighting device 4; the intramedullary nail 1 arranged in this way is conveniently placed in the marrow cavity of a patient and can be quickly combined and connected with the sighting device 4.
The diameter of the front end of the intramedullary nail 1 is smaller than that of the main body of the intramedullary nail 1, 4 circular nail holes 12 are respectively arranged at the front end and the rear end of the intramedullary nail 1, and locking screws which are commonly used in clinic are arranged in the circular nail holes 12; this arrangement stably fixes the intramedullary nail 1 within the medullary cavity, preventing micromotion.
The through hole 11 is a rectangular through hole 11, the length of the through hole 11 is smaller than that of the intramedullary nail 1, the width of the through hole 11 is smaller than the diameter of the intramedullary nail 1, and the size of the through hole 11 is larger than that of the elastic sheet 22 with the protruding part 23; this arrangement ensures that the resilient piece 22 with the protruding part 23 smoothly protrudes from the through opening 11.
The fixing structure 2 comprises a connecting section 21 and a spring plate 22 with a protruding part 23, the connecting section 21 is connected with the spring plate 22 with the protruding part 23, and the connecting section 21 is positioned at the rear end of the spring plate 22 with the protruding part 23; the connecting section 21 is connected with the operating rod 3 in a combined manner; the fixing structure 2 is arranged to be conveniently placed in the intramedullary nail 1.
The main body of the connecting section 21 is cylindrical, and the elastic sheet 22 with the protruding part 23 is arranged at the front end of the connecting section 21; the elastic sheet 22 with the protruding parts 23 comprises elastic sheets 22 arranged on two sides of the front end of the connecting section 21 and protruding parts 23 respectively arranged on the outer side walls of the elastic sheets 22 on the two sides, and the protruding parts 23 are respectively connected with the outer side walls of the elastic sheets 22 on the two sides; the protruding part 23 is fixed on the medullary cavity wall by extending out of the through-hole 11 under the elastic force of the elastic sheet 22.
The elastic sheet 22 is made of a medical metal material with elasticity, and the connecting section 21 is made of a medical metal material; the elastic sheet 22 has elasticity and firmness.
The length of the fixing structure 2 is smaller than that of the intramedullary nail 1, and the diameter of the fixing structure 2 is smaller than the inner diameter of the intramedullary nail 1; the fixing structure 2 can be smoothly placed into the intramedullary nail 1.
The convex part 23 is a trapezoidal block, the larger surface of the trapezoidal block is connected with the outer side wall of the elastic sheet 22, the smaller surface of the trapezoidal block extends out of the through hole 11, and the edge of the trapezoidal block is provided with a smooth surface edge; the convex part 23 arranged in this way is easy to extend out or retract into the intramedullary nail 1, and has simple operation, high efficiency and time saving.
An anti-moving gasket 25 for enhancing the stability of the connecting section 21 is arranged on the outer side wall of the rear end of the connecting section 21, namely the end close to an operator, the anti-moving gasket 25 is an annular ring made of medical silica gel materials, and the anti-moving gasket 25 is connected with the outer side wall of the rear end of the connecting section 21; the anti-moving washer 25 has certain elasticity, can deform to a certain degree due to extrusion, cannot prevent the fixing structure 2 from entering the intramedullary nail 1, and can further enhance the stability of the fixing structure 2 after the fixing structure 2 reaches a designated position.
The operating rod 3 comprises an operating rod 3 main body, an operating handle 32 and a connecting structure, wherein the main body of the operating rod 3 is cylindrical, the operating handle 32 is arranged at the rear end of the operating rod 3 main body, the connecting structure is arranged at the front end of the operating rod 3 main body and is used for being connected with the connecting section 21 in a combined mode, the operating handle 32 is connected with the operating rod 3 main body, and the connecting structure is connected with the operating rod 3 main body; the operating rod 3 is connected with the connecting section 21 in a combined manner, and the fixed structure 2 is controlled to move forwards, backwards or rotate by moving the operating rod 3.
The connecting structure is provided with a hook 31, and a hook accommodating groove 24 which can accommodate the hook 31 and can allow the hook 31 to rotate 180 degrees in the hook accommodating groove is arranged at the rear end of the connecting section 21; the hook 31 of this kind of setting gets into couple holding tank 24, rotates 90 left or right, fixes couple 31 in couple holding tank 24 steadily to with the stable built-up connection of action bars 3 and fixed knot structure 2, can control fixed knot structure 2 through action bars 3.
The aiming device 4 comprises a connecting tube 41 connected with the intramedullary nail 1, a horizontal tube 42 for providing a channel for the fixing structure 2 or the operating rod 3, and a C-shaped handle 43 arranged at the lower end of the horizontal tube 42; the connecting pipe 41 is connected with the horizontal pipe 42, and the C-shaped handle 43 is connected with the horizontal pipe 42; the sighting device 4 arranged in this way can allow the fixing structure 2 and the operating rod 3 to enter or withdraw, provide accurate position navigation for embedding the fixing structure 2 and ensure that the fixing structure 2 does not have position deviation in the embedding process.
The front end of the connecting pipe 41 is provided with an internal thread 411 matched with the external thread 13 at the rear end of the intramedullary nail 1, and the connecting pipe 41 is connected with the intramedullary nail 1 through thread combination; the diameter of the connecting tube 41 is larger than that of the intramedullary nail 1, and the diameter of the horizontal tube 42 is the same as that of the connecting tube 41; this arrangement ensures that the fixed structure 2 or the operating rod 3 smoothly enters the horizontal tube 42.
EXAMPLE 5 an anti-wobbling intramedullary nail
An intramedullary nail for preventing shaking, which comprises an intramedullary nail 1, a fixing structure 2 arranged inside the intramedullary nail 1 and used for preventing the intramedullary nail 1 from shaking, an operating rod 3 used for putting in and taking out the fixing structure 2, and a sighting device 4 used together with the intramedullary nail 1 and a control rod, and is characterized in that the fixing structure 2 comprises a spring plate 22 with a convex part 23; the intramedullary nail 1 is arranged as a cavity intramedullary nail 1, a through hole 11 allowing the elastic sheet 22 with the convex part 23 to extend out is arranged on the side wall of the intramedullary nail 1, and the elastic sheet 22 with the convex part 23 extends out from the through hole 11 and is fixed on the wall of the medullary cavity; the operating rod 3 is combined and connected with the fixing structure 2, and the sighting device 4 is combined and connected with the intramedullary nail 1 and the operating rod 3; through set up fixed knot structure 2 in cavity intramedullary nail 1, the shell fragment 22 of taking projecting part 23 on fixed knot structure 2 stretches out from penetrating mouth 11 and fixes on the marrow cavity lateral wall to the position of fixed intramedullary nail 1 guarantees the stability of intramedullary nail 1 in the marrow cavity, prevents effectively that intramedullary nail 1 from taking place to rock, avoids taking place unnecessary complication, guarantees treatment.
The intramedullary nail 1 is a cavity intramedullary nail 1 with a cylindrical main body, the rear end of the intramedullary nail 1, namely one end close to an operator, is provided with an external thread 13, and the rear end of the intramedullary nail 1 is combined and connected with the sighting device 4; the intramedullary nail 1 arranged in this way is conveniently placed in the marrow cavity of a patient and can be quickly combined and connected with the sighting device 4.
The diameter of the front end of the intramedullary nail 1 is smaller than that of the main body of the intramedullary nail 1, 4 circular nail holes 12 are respectively arranged at the front end and the rear end of the intramedullary nail 1, and locking screws which are commonly used in clinic are arranged in the circular nail holes 12; this arrangement stably fixes the intramedullary nail 1 within the medullary cavity, preventing micromotion.
The through hole 11 is a rectangular through hole 11, the length of the through hole 11 is smaller than that of the intramedullary nail 1, the width of the through hole 11 is smaller than the diameter of the intramedullary nail 1, and the size of the through hole 11 is larger than that of the elastic sheet 22 with the protruding part 23; this arrangement ensures that the resilient piece 22 with the protruding part 23 smoothly protrudes from the through opening 11.
The fixing structure 2 comprises a connecting section 21 and a spring plate 22 with a protruding part 23, the connecting section 21 is connected with the spring plate 22 with the protruding part 23, and the connecting section 21 is positioned at the rear end of the spring plate 22 with the protruding part 23; the connecting section 21 is connected with the operating rod 3 in a combined manner; the fixing structure 2 is arranged to be conveniently placed in the intramedullary nail 1.
The main body of the connecting section 21 is cylindrical, and the elastic sheet 22 with the protruding part 23 is arranged at the front end of the connecting section 21; the elastic sheet 22 with the protruding parts 23 comprises elastic sheets 22 arranged on two sides of the front end of the connecting section 21 and protruding parts 23 respectively arranged on the outer side walls of the elastic sheets 22 on the two sides, and the protruding parts 23 are respectively connected with the outer side walls of the elastic sheets 22 on the two sides; the protruding part 23 is fixed on the medullary cavity wall by extending out of the through-hole 11 under the elastic force of the elastic sheet 22.
The elastic sheet 22 is made of a medical metal material with elasticity, and the connecting section 21 is made of a medical metal material; the elastic sheet 22 has elasticity and firmness.
The length of the fixing structure 2 is smaller than that of the intramedullary nail 1, and the diameter of the fixing structure 2 is smaller than the inner diameter of the intramedullary nail 1; the fixing structure 2 can be smoothly placed into the intramedullary nail 1.
The convex part 23 is a trapezoidal block, the larger surface of the trapezoidal block is connected with the outer side wall of the elastic sheet 22, the smaller surface of the trapezoidal block extends out of the through hole 11, and the edge of the trapezoidal block is provided with a smooth surface edge; the convex part 23 arranged in this way is easy to extend out or retract into the intramedullary nail 1, and has simple operation, high efficiency and time saving.
An anti-moving gasket 25 for enhancing the stability of the connecting section 21 is arranged on the outer side wall of the rear end of the connecting section 21, namely the end close to an operator, the anti-moving gasket 25 is an annular ring made of medical silica gel materials, and the anti-moving gasket 25 is connected with the outer side wall of the rear end of the connecting section 21; the anti-moving washer 25 has certain elasticity, can deform to a certain degree due to extrusion, cannot prevent the fixing structure 2 from entering the intramedullary nail 1, and can further enhance the stability of the fixing structure 2 after the fixing structure 2 reaches a designated position.
The operating rod 3 comprises an operating rod 3 main body, an operating handle 32 and a connecting structure, wherein the main body of the operating rod 3 is cylindrical, the operating handle 32 is arranged at the rear end of the operating rod 3 main body, the connecting structure is arranged at the front end of the operating rod 3 main body and is used for being connected with the connecting section 21 in a combined mode, the operating handle 32 is connected with the operating rod 3 main body, and the connecting structure is connected with the operating rod 3 main body; the operating rod 3 is connected with the connecting section 21 in a combined manner, and the fixed structure 2 is controlled to move forwards, backwards or rotate by moving the operating rod 3.
The connecting structure is provided with a hook 31, and a hook accommodating groove 24 which can accommodate the hook 31 and can allow the hook 31 to rotate 180 degrees in the hook accommodating groove is arranged at the rear end of the connecting section 21; the hook 31 of this kind of setting gets into couple holding tank 24, rotates 90 left or right, fixes couple 31 in couple holding tank 24 steadily to with the stable built-up connection of action bars 3 and fixed knot structure 2, can control fixed knot structure 2 through action bars 3.
The direction of the operating handle 32 is vertical to the direction of the main body of the operating rod 3, and the operating handle 32 is a handle with a rectangular main body; the operating handle 32 thus provided facilitates the operator's gripping of the operating lever 3.
The aiming device 4 comprises a connecting tube 41 connected with the intramedullary nail 1, a horizontal tube 42 for providing a channel for the fixing structure 2 or the operating rod 3, and a C-shaped handle 43 arranged at the lower end of the horizontal tube 42; the connecting pipe 41 is connected with the horizontal pipe 42, and the C-shaped handle 43 is connected with the horizontal pipe 42; the sighting device 4 arranged in this way can allow the fixing structure 2 and the operating rod 3 to enter or withdraw, provide accurate position navigation for embedding the fixing structure 2 and ensure that the fixing structure 2 does not have position deviation in the embedding process.
The front end of the connecting pipe 41 is provided with an internal thread 411 matched with the external thread 13 at the rear end of the intramedullary nail 1, and the connecting pipe 41 is connected with the intramedullary nail 1 through thread combination; the diameter of the connecting tube 41 is larger than that of the intramedullary nail 1, and the diameter of the horizontal tube 42 is the same as that of the connecting tube 41; this arrangement ensures that the fixed structure 2 or the operating rod 3 smoothly enters the horizontal tube 42.
The above description of the embodiments is only for the understanding of the present invention. It should be noted that modifications could be made to the invention without departing from the principle of the invention, which would also fall within the scope of the claims of the invention.
Claims (7)
1. The intramedullary nail capable of preventing shaking comprises an intramedullary nail (1), a fixing structure (2) which is arranged inside the intramedullary nail (1) and used for preventing the intramedullary nail (1) from shaking, an operating rod (3) which is used for putting the fixing structure (2) in and taking the fixing structure out, and a sighting device (4) which is matched with the intramedullary nail (1) and the operating rod (3) for use, and is characterized in that the fixing structure (2) comprises a spring plate (22) with a convex part (23) and a connecting section (21), the connecting section (21) is connected with the spring plate (22) with the convex part (23), and the connecting section (21) is positioned at the rear end of the spring plate (22) with the convex part (23); the connecting section (21) is connected with the operating rod (3) in a combined mode, the main body of the connecting section (21) is cylindrical, the elastic sheet (22) with the protruding part (23) is arranged at the front end of the connecting section (21), and the outer side wall of the rear end of the connecting section (21), namely the end close to an operator, is provided with a movement preventing gasket (25) used for strengthening the stability of the connecting section (21); the elastic sheet (22) with the protruding part (23) comprises elastic sheets (22) arranged on two sides of the front end of the connecting section (21) and protruding parts (23) respectively arranged on the outer side walls of the elastic sheets (22) on the two sides, the protruding parts (23) are respectively connected with the outer side walls of the elastic sheets (22) on the two sides, the protruding parts (23) are arranged into trapezoidal blocks, the larger surface of each trapezoidal block is connected with the outer side wall of each elastic sheet (22), and the edges of the trapezoidal blocks are arranged into edges with smooth surfaces; the intramedullary nail (1) is a cavity intramedullary nail (1), a through hole (11) allowing the elastic sheet (22) with the convex part (23) to extend out is arranged on the side wall of the intramedullary nail (1), the smaller surface of the trapezoidal block extends out of the through hole (11), and the elastic sheet (22) with the convex part (23) extends out of the through hole (11) and is fixed on the wall of the marrow cavity; the operating rod (3) is connected with the fixing structure (2) in a combined mode, and the sighting device (4) is connected with the intramedullary nail (1) and the operating rod (3) in a combined mode.
2. The intramedullary nail for preventing shaking according to claim 1, characterized in that the intramedullary nail (1) is provided as a mainly cylindrical cavity intramedullary nail (1), the back end of the intramedullary nail (1), i.e. the end close to the operator, is provided with an external thread (13), and the back end of the intramedullary nail (1) is connected with the aiming device (4) in a combination way.
3. The intramedullary nail preventing wobbling according to claim 1, characterized in that the through-going opening (11) is provided as a rectangular through-going opening (11), the length of the through-going opening (11) being smaller than the length of the intramedullary nail (1), the width of the through-going opening (11) being smaller than the diameter of the intramedullary nail (1), the size of the through-going opening (11) being larger than the size of the spring (22) with protruding parts (23).
4. The intramedullary nail preventing shaking according to claim 1, wherein the operating rod (3) comprises a main body of the operating rod (3) with a cylindrical main body, an operating handle (32) arranged at the rear end of the main body of the operating rod (3) and a connecting structure arranged at the front end of the main body of the operating rod (3) and used for being combined and connected with the connecting section (21), the operating handle (32) is connected with the main body of the operating rod (3), and the connecting structure is connected with the main body of the operating rod (3).
5. The intramedullary nail preventing shaking according to claim 4, characterized in that the connecting structure is provided as a hook (31), and a hook receiving groove (24) capable of receiving the hook (31) and allowing the hook (31) to rotate 180 ° therein is provided at the rear end of the connecting section (21).
6. The anti-wobble intramedullary nail according to claim 1, characterized in that the aiming device (4) comprises a connection tube (41) connected to the intramedullary nail (1), a horizontal tube (42) for providing a passage for the fixation structure (2) or the operating rod (3), and a C-shaped handle (43) arranged at the lower end of the horizontal tube (42); the connecting pipe (41) is connected with the horizontal pipe (42), and the C-shaped handle (43) is connected with the horizontal pipe (42).
7. The intramedullary nail preventing shaking according to claim 6, characterized in that an internal thread (411) matching with the external thread (13) of the back end of the intramedullary nail (1) is arranged at the front end of the connecting tube (41), and the connecting tube (41) is connected with the intramedullary nail (1) through a thread combination; the diameter of the connecting tube (41) is larger than that of the intramedullary nail (1), and the diameter of the horizontal tube (42) is the same as that of the connecting tube (41).
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| CN201911007489.4A CN110693589B (en) | 2019-10-22 | 2019-10-22 | Anti-sway intramedullary nail |
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| CN201911007489.4A CN110693589B (en) | 2019-10-22 | 2019-10-22 | Anti-sway intramedullary nail |
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| CN112617714B (en) * | 2020-12-31 | 2023-08-25 | 固安博健生物技术有限公司 | Fracture broken end anti-infection type multifunctional intramedullary nail |
| CN112617715B (en) * | 2020-12-31 | 2023-08-25 | 固安博健生物技术有限公司 | Intramedullary nail and anti-micro-motion positioning assembly thereof |
| CN112754395B (en) * | 2020-12-31 | 2023-08-25 | 固安博健生物技术有限公司 | Intramedullary nail and intramedullary nail internal bone grafting device |
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| US10251684B2 (en) * | 2011-06-23 | 2019-04-09 | DePuy Synthes Products, Inc. | Monofix nail |
| CN204092152U (en) * | 2014-07-25 | 2015-01-14 | 杨涛 | A kind of self-locking compress intramedullary nail making fracture two ends fluid-tight engagement |
| CN209236361U (en) * | 2018-08-24 | 2019-08-13 | 大博医疗科技股份有限公司 | A kind of intramedullary nail diopter |
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