CN110693590B - Multifunctional intramedullary nail - Google Patents
Multifunctional intramedullary nail Download PDFInfo
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- CN110693590B CN110693590B CN201911007497.9A CN201911007497A CN110693590B CN 110693590 B CN110693590 B CN 110693590B CN 201911007497 A CN201911007497 A CN 201911007497A CN 110693590 B CN110693590 B CN 110693590B
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- 239000000463 material Substances 0.000 abstract description 22
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- 239000007943 implant Substances 0.000 description 10
- 238000001179 sorption measurement Methods 0.000 description 10
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- 208000010392 Bone Fractures Diseases 0.000 description 8
- 206010017076 Fracture Diseases 0.000 description 7
- 229940079593 drug Drugs 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 210000001185 bone marrow Anatomy 0.000 description 6
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- 230000002262 irrigation Effects 0.000 description 4
- 238000003973 irrigation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 2
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- 208000006670 Multiple fractures Diseases 0.000 description 1
- 208000006735 Periostitis Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 210000002758 humerus Anatomy 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 239000011505 plaster Substances 0.000 description 1
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- 210000002303 tibia Anatomy 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary devices, e.g. pins or nails
- A61B17/7233—Intramedullary devices, e.g. pins or nails 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
- A61B2217/00—General characteristics of surgical instruments
- A61B2217/002—Auxiliary appliance
- A61B2217/007—Auxiliary appliance with irrigation system
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Abstract
A multifunctional intramedullary nail comprises an intramedullary nail main body, a slideway arranged in the intramedullary nail main body and an internal fixing structure moving along the slideway and used for preventing the intramedullary nail from shaking; the intramedullary nail is characterized in that the intramedullary nail main body is a cavity intramedullary nail, and a plurality of windows are arranged on the wall of the cavity; the internal fixing structure comprises an extensible structure; the window comprises a window through which the extendable structure extends; the slideway is integrally connected with the intramedullary nail main body and has the same direction with the intramedullary nail, and the internal fixing structure is combined and connected with the slideway; through the arrangement of the intramedullary nail with the window, after the internal fixing structure reaches the window from which the extending structure extends, the extending structure extends out of the window and is fixed on the inner wall of the marrow cavity, so that the intramedullary nail is prevented from shaking in the marrow cavity, unnecessary complications are avoided, and operations such as flushing, medicine injection or material implantation can be performed in the cavity of the intramedullary nail through the arrangement of the plurality of windows.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a multifunctional intramedullary nail.
Background
Fracture refers to the continuous complete or partial breakdown of bone structure. It is common to children and the elderly, and occurs in the middle-aged and young. Patients often have one site fractured and a few multiple fractures. After timely and proper treatment, most patients can recover the original functions, and a few patients can leave sequelae with different degrees.
The method of fracture fixation is divided into external fixation and internal fixation, the external fixation is mainly used for patients whose fracture is reduced by manipulation, and some patients whose fracture is reduced by incision and internal fixation need external fixation. The currently common external fixation methods include small splints, plaster bandages, abduction frames, continuous traction and external fixators, etc. The internal fixation for fracture refers to an operation in which a broken bone is directly connected and fixed in the broken bone by using a metal screw, a steel plate, an intramedullary pin, a steel wire, a bone plate or the like when the fracture occurs.
Intramedullary pin fixation is often used for long bone (such as femur, humerus, ulna, tibia, radius, etc.) shaft fractures. The advantages are that: the intramedullary pin 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 intramedullary needle is long and has edges and corners with different shapes, and is embedded into the medullary cavity, so that firm internal fixation can be achieved, and the occurrence of rotation, lateral movement and angular displacement can be avoided.
At present, the operation difficulty of the internal fixation of the intramedullary nail in clinical practice is large, the operation depends on the operation experience of an operator, in the operation process, surgical instruments need to be frequently replaced, the operation process is complicated, the operation time is long, and the operation risk of a patient is increased. In addition, because of individual difference of patients and different thickness of bone cavities, intramedullary nails fixed in the bone cavities are easy to slightly move to form bone nonunion; the broken end in the bone cavity is easy to form an angle due to different thicknesses in the cavity, for the angle, a blocking nail or a kirschner wire is used at present, but invasive operation is conducted, the skin needs to be broken, meanwhile, when the broken end is radiated, a patient needs to bear the injury of rays, the operation requirement on a doctor is also very high, the broken end does not always survive once, the desired resetting effect cannot be achieved, and misoperation is easy to form.
Aiming at the problems that in the prior art, the intramedullary nail internal fixation needs to frequently replace surgical instruments in the surgical process, and the operation process is complicated; because of individual difference of patients and different thickness of bone cavities, intramedullary nails fixed in the bone cavities are easy to slightly move, and the problem of bone nonunion or angulation of broken ends is formed, thereby providing a multifunctional intramedullary nail.
Disclosure of Invention
In order to overcome the defects that the intramedullary nail internal fixation operation in the prior art needs to frequently replace surgical instruments in the operation process, the operation process is more complicated; the invention provides a multifunctional intramedullary nail, which solves the problems that the intramedullary nails fixed in bone cavities are easy to slightly move due to individual difference and different bone cavity thicknesses of patients, and the bone is not connected or the broken ends are angled.
A multifunctional intramedullary nail comprises an intramedullary nail main body, a slideway arranged in the intramedullary nail main body and an internal fixing structure moving along the slideway and used for preventing the intramedullary nail from shaking; the intramedullary nail is characterized in that the intramedullary nail main body is a cavity intramedullary nail, and a plurality of windows are arranged on the wall of the cavity; the internal fixing structure comprises an extensible structure; the window comprises a window through which the extendable structure extends; the slideway is integrally connected with the intramedullary nail main body and has the same direction with the intramedullary nail, and the internal fixing structure is combined and connected with the slideway; through the arrangement of the intramedullary nail with the window, after the internal fixation structure reaches the window for the extension structure to extend out, the extension structure extends out from the window and is fixed on the inner wall of a marrow cavity, so that the intramedullary nail is prevented from shaking in the marrow cavity, unnecessary complications are avoided, in addition, the intramedullary nail main body is arranged into a cavity intramedullary nail, and the operations such as flushing, medicine injection or material implantation can be carried out in the cavity of the intramedullary nail through the arrangement of a plurality of windows, so that the structural space of the cavity of the intramedullary nail is fully utilized, the operation process is simplified, and the pain of a patient is relieved.
Further, the intramedullary nail body can be an intramedullary nail with any shape and capable of realizing the function.
Further, the intramedullary nail is a hexagonal polygonal cavity intramedullary nail; the intramedullary nail with the shape has stronger stability.
Furthermore, the slideway is arranged at the edge position of the middle height in the intramedullary nail, and the side edge of the slideway is integrally connected with the inner side wall of the intramedullary nail; the stability of slide can be guaranteed to this kind of setting.
Further, a preset track is arranged on the slide way; and a locking structure is arranged on the preset track close to the corresponding window, after the internal fixing structure moves to the locking structure along the preset track, the lower end of the internal fixing structure is fixed at the locking structure, the upper end of the internal fixing structure is provided with the extending structure, and the extending structure extends out of the window and is fixed on the inner wall of the marrow cavity.
Furthermore, the locking structure comprises a sliding chute and a fixing hole, and the fixing hole is arranged at the tail end of the sliding chute; the fixing hole is used for fixing the internal fixing structure.
Furthermore, the sliding groove is a semicircular groove, and the length of the sliding groove is smaller than that of the sliding way; the arrangement can play a role in blocking and fixing the internal fixing structure when the internal fixing structure is fixed in the fixing hole.
Furthermore, the fixing hole is a hole penetrating through the slide way up and down, and the inner diameter of the fixing hole is slightly larger than the outer diameter of the bottom of the internal fixing structure; this arrangement ensures that the fixing holes can receive the lower end of the internal structure, thereby fixing the internal fixing structure to the slideway.
Furthermore, the fixing holes are magnetic, and the internal fixing structure can be fixed better under the action of magnetic adsorption.
Furthermore, two slide ways are arranged and are respectively arranged at the edge positions of the left side and the right side of the middle height in the intramedullary nail.
Further, the lengths of the two slideways and the length of the sliding chute are set to be different in size; the positions of the fixing holes are different due to different lengths of the sliding grooves; the arrangement ensures that the positions of the left fixing hole and the right fixing hole are not on the same straight line, so that the fixing positions of the internal fixing structures are different, the acting forces of the left internal fixing structure and the right internal fixing structure are concentrated at different positions, and the stability of the intramedullary nail in the marrow cavity is ensured by multi-point fixation.
Or the lengths of the two slideways and the length of the sliding chute are set to be the same size; the positions of the fixing holes are arranged on the same horizontal line; the arrangement makes the left and right internal fixing structures symmetrical with each other, so that the structure has stability on one hand and aesthetic property on the other hand.
Furthermore, a support rod is arranged at the bottom of the slideway, one end of the support rod is integrally connected with the bottom of the slideway, and the other end of the support rod is integrally connected with the inner side wall of the intramedullary nail; this arrangement may enhance the stability of the slideway.
Furthermore, the internal fixing structure comprises a base at the bottom and an extensible structure at the upper part, and the base and the extensible structure are integrally connected; the base can follow the slide removes, but the structure that stretches out can stretch out the window is fixed on the intramedullary wall.
Further, the extensible structure is arranged to be an arc-shaped strip structure; the arc-shaped arrangement can avoid scratching the inner wall of the marrow cavity, and when the internal fixing structure is fixed in the fixing hole, the arc-shaped strip-shaped structure extends out of the window and is fixed on the inner wall of the marrow cavity.
Further, an operating rod is arranged on the base and is connected with the base of the internal fixing structure in a combined mode; the combined connection mode can be used for taking out the operating rod after the inner fixing structure is fixed.
Further, a transverse blocking protrusion is arranged at the far end of the operating rod; the lateral blocking projection serves to fix the position of the operating lever.
Furthermore, a soft split snap ring is arranged on the base, the split snap ring has an upward opening, and the split snap ring is integrally connected with the base; when the operating rod is used, the operating rod is placed into the opening snap ring, and the blocking protrusion can fix the operating rod in the opening snap ring.
Furthermore, the lower part of the base is made of a magnetic material, and a magnetic adsorption effect is generated between the lower part of the base and the fixing hole, so that the internal fixing structure is firmly fixed in the fixing hole.
Furthermore, the size of the window is larger than that of the arc-shaped strip-shaped structure, and the size of the window is smaller than that of the side wall of the intramedullary nail; the position of the window corresponds to the position of the arc-shaped strip-shaped structure; the arrangement ensures that the arc-shaped strip-shaped structure can smoothly extend out of the window when the internal fixing structure is fixed.
Furthermore, a pipeline structure for operations such as flushing, injecting medicines, implanting materials and the like is arranged in the intramedullary nail.
Further, the pipeline structure is set to be a cylindrical pipe, one end of the cylindrical pipe is set to be an opening, and the other end of the cylindrical pipe is provided with a circular bottom cover.
Furthermore, 2-4 branch pipelines are arranged on the circular bottom cover, and each branch pipeline faces to a different direction; the arrangement can fully wash, inject medicine or implant materials in the bone marrow cavity.
Further, the number of the branch lines is preferably 2; 2 branch lines are sufficient for the treatment needs.
Further, the branch line is provided as a soft cylindrical tube; the soft branch pipeline is convenient to take out or put in the intramedullary nail.
Further, the window is arranged on the side wall of the intramedullary nail at the position corresponding to the branch pipeline; the branch lines flow irrigation fluid, drugs or implant materials, etc. to the bone marrow cavity through the windows.
Further, a pipeline fixing structure is arranged, the pipeline fixing structure is arranged at the upper half part of the inside of the intramedullary nail, and the pipeline fixing structure is integrally connected with the inner side wall of the top of the intramedullary nail; the arrangement can leave the space of the lower half part inside the intramedullary nail for placing other surgical instruments or performing other operations.
Furthermore, 2-6 pipeline fixing structures are arranged, the two pipeline fixing structures are respectively distributed at the near end and the far end of the pipeline structure, and the height of the pipeline fixing structure at the near end is larger than that of the pipeline fixing structure at the far end; the near end of the pipeline structure is one end close to an operator, the far end of the pipeline structure is one end far away from the operator, and the pipeline structure has a certain inclination angle when placed on the pipeline fixing structure due to the arrangement, so that flushing liquid, liquid medicine or implant materials and the like can flow out of the pipeline structure to reach the marrow cavity.
Further, the number of the pipeline fixing structures is preferably 2; the 2 pipeline fixing structures can sufficiently meet the requirements of fixing the pipeline structures and occupy smaller space.
Furthermore, the pipeline fixing structure is arranged as a bearing ring, and the upper end of the bearing ring is integrally connected with the side wall of the top of the intramedullary nail; the arrangement can occupy smaller space and leave more space for other operations.
Further, a semicircular plugging sheet is arranged on the supporting ring at the far end; the plugging sheet can fix the pipeline structure and prevent the pipeline structure from slipping.
When the intramedullary nail is used, the operating rod is firstly combined and connected with the split snap ring, then the operating rod is controlled to control the movement of the internal fixing structure, the base of the internal fixing structure enters the fixing hole after the internal fixing structure is pushed to reach the position of the locking structure, the extendable structure extends out of the window and is fixed on the inner wall of the marrow cavity, then the operating rod is lifted upwards, the operating rod is lifted out of the split snap ring, and then the operating rod is taken out of the intramedullary nail; when the operations of flushing, injecting medicine, implanting material and the like need to be carried out, firstly, the pipeline structure is installed on the pipeline fixing structure, the position of the intramedullary nail is adjusted to enable the branch pipeline to be directly opposite to the affected part, then, the injector is placed into the pipeline structure to be injected, or flushing liquid, medicine or implanting material is injected into the pipeline structure and flows through the branch pipeline to reach the affected part; or, the device such as an injector or a syringe is directly placed in the cavity of the intramedullary nail without installing a pipeline structure, and the flushing liquid, the medicine or the implant material is directly injected into the marrow cavity through the window.
Compared with the intramedullary nail instrument in the prior art, the technical scheme of the invention fully utilizes the space of the inner cavity of the intramedullary nail, solves the problem of the intramedullary nail shaking in the marrow cavity by arranging the internal fixing structure in the intramedullary nail, can carry out operations such as flushing, medicine application, material implantation and the like on the marrow cavity by arranging the pipeline structure, does not need to frequently replace surgical instruments, simplifies the surgical steps, shortens the surgical time, relieves the pain of a patient, not only integrates multiple functions into one instrument, but also has low cost and is convenient for wide popularization.
Drawings
FIG. 1 is a schematic view of the overall structure of the multifunctional intramedullary nail internal fixation structure fixed on a slideway of the present invention;
FIG. 2 is a schematic diagram of the overall front view of the multifunctional intramedullary nail internal fixation structure fixed on the slideway of the present invention;
FIG. 3 is a schematic view of the overall rear view structure of the multifunctional intramedullary nail internal fixation structure fixed on the slideway of the present invention;
FIG. 4 is a schematic view of the internal bottom view of the multifunctional intramedullary nail internal fixation structure fixed on the slideway of the present invention;
FIG. 5 is a schematic diagram of the overall front view of the multifunctional intramedullary nail internal fixation structure at the front end of the slideway according to the present invention;
FIG. 6 is a schematic view of the overall cross-sectional structure of the multifunctional intramedullary nail internal fixation structure fixed on the slideway of the present invention;
FIG. 7 is an enlarged structural view of the multifunctional intramedullary nail internal fixation structure according to the present invention;
FIG. 8 is a partially enlarged view of the combination of the multifunctional intramedullary nail internal fixation structure and the operation rod according to the present invention;
FIG. 9 is a schematic view of the overall structure of a multi-functional intramedullary nail slide of the present invention;
FIG. 10 is a partially enlarged structural view of the internal fixation structure of a multifunctional intramedullary nail fixed in a fixation hole of a slideway according to the present invention;
FIG. 11 is an enlarged schematic view of a partial cross-sectional structure of a fixation hole of the multifunctional intramedullary nail internal fixation structure fixed on the slideway of the present invention;
FIG. 12 is an enlarged view of a branch line of a multifunctional intramedullary nail canal structure of the present invention;
in the drawings, 1, an intramedullary nail main body; 11. a slideway; 111. a chute; 112. a fixing hole; 113. a support bar; 114. a window; 115. a bearing ring; 2. an internal fixation structure; 21. a base; 22. an extendable structure; 23. a split snap ring; 24. an operating lever; 241. a lateral blocking projection; 3. a pipe structure; 31. and a branch pipeline.
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 1A multifunctional intramedullary nail
A multifunctional intramedullary nail comprises an intramedullary nail body 1, a slideway 11 arranged inside the intramedullary nail body 1, and an internal fixing structure 2 moving along the slideway 11 and used for preventing the intramedullary nail from shaking; the intramedullary nail is characterized in that the intramedullary nail main body 1 is a cavity intramedullary nail, and a plurality of windows 114 are arranged on the wall of the cavity; the internal fixation structure 2 comprises an extendable structure 22; the window 114 includes a window 114 through which the extendable structure 22 extends; the slideway 11 is integrally connected with the intramedullary nail main body 1 and has the same direction with the intramedullary nail, and the internal fixing structure 2 is combined and connected with the slideway 11; through the arrangement of the intramedullary nail with the window 114, after the internal fixation structure 2 reaches the window 114 for the extension structure to extend out, the extension structure extends out from the window 114 and is fixed on the inner wall of a marrow cavity, so that the intramedullary nail is prevented from shaking in the marrow cavity, and unnecessary complications are avoided.
The intramedullary nail main body 1 can be an intramedullary nail which can realize the function of the intramedullary nail main body in any shape, wherein a hexagonal polygonal cavity intramedullary nail is preferably arranged; the intramedullary nail with the shape has stronger stability.
The slideway 11 is arranged at the edge position of the middle height in the intramedullary nail, and the side edge of the slideway 11 is integrally connected with the inner side wall of the intramedullary nail; this arrangement ensures stability of the slideway 11.
The internal fixing structure 2 comprises a base 21 at the bottom and an extensible structure 22 at the upper part, and the base 21 and the extensible structure 22 are integrally connected; the base 21 can move along the slide 11, and the extendable structure 22 can extend out of the window 114 and be fixed on the inner wall of the marrow cavity.
The extendable structures 22 are arranged into arc-shaped strip structures; the arc-shaped structure can avoid scratching the inner wall of the marrow cavity, and when the inner fixing structure 2 is fixed in the fixing hole 112, the arc-shaped strip-shaped structure extends out of the window 114 and is fixed on the inner wall of the marrow cavity.
An operating rod 24 is arranged on the base 21, and the operating rod 24 is connected with the base 21 of the internal fixing structure 2 in a combined manner; this combination connection allows the operating rod 24 to be removed after the internal fixation structure 2 has been fixed.
The size of the window 114 is larger than that of the arc-shaped strip structure, and the size of the window 114 is smaller than that of the side wall of the intramedullary nail; the position of the window 114 corresponds to the position of the arc-shaped strip-shaped structure; this arrangement ensures that the curved strip-like structure can smoothly extend out of the window 114 when the internal fixation structure 2 is fixed.
When the intramedullary nail fixing device is used, the operating rod 24 is connected with the base 21 of the internal fixing structure 2 in a combined mode, the movement of the internal fixing structure 2 is controlled by controlling the operating rod 24, and the extendable structure 22 extends out of the window 114 and is fixed on the inner wall of a marrow cavity, so that the intramedullary nail is stably fixed in the marrow cavity, and the intramedullary nail is prevented from shaking.
EXAMPLE 2A multifunctional intramedullary nail
A multifunctional intramedullary nail comprises an intramedullary nail body 1, a slideway 11 arranged inside the intramedullary nail body 1, and an internal fixing structure 2 moving along the slideway 11 and used for preventing the intramedullary nail from shaking; the intramedullary nail is characterized in that the intramedullary nail main body 1 is a cavity intramedullary nail, and a plurality of windows 114 are arranged on the wall of the cavity; the internal fixation structure 2 comprises an extendable structure 22; the window 114 includes a window 114 through which the extendable structure 22 extends; the slideway 11 is integrally connected with the intramedullary nail main body 1 and has the same direction with the intramedullary nail, and the internal fixing structure 2 is combined and connected with the slideway 11; through the arrangement of the intramedullary nail with the window 114, after the internal fixation structure 2 reaches the window 114 for the extension structure to extend out, the extension structure extends out from the window 114 and is fixed on the inner wall of a marrow cavity, so that the intramedullary nail is prevented from shaking in the marrow cavity, and unnecessary complications are avoided.
The intramedullary nail main body 1 can be an intramedullary nail which can realize the function of the intramedullary nail main body in any shape, wherein a hexagonal polygonal cavity intramedullary nail is preferably arranged; the intramedullary nail with the shape has stronger stability.
The slideway 11 is arranged at the edge position of the middle height in the intramedullary nail, and the side edge of the slideway 11 is integrally connected with the inner side wall of the intramedullary nail; this arrangement ensures stability of the slideway 11.
A preset track is arranged on the slide way 11; a locking structure is arranged on the predetermined track near the corresponding window 114, after the internal fixing structure 2 moves to the locking structure along the predetermined track, the lower end of the internal fixing structure is fixed at the locking structure, the upper end of the internal fixing structure is the extending structure, and the extending structure extends out of the window 114 and is fixed on the inner wall of the marrow cavity.
The locking structure comprises a sliding groove 111 and a fixing hole 112, and the fixing hole 112 is arranged at the tail end of the sliding groove 111; the fixing holes 112 are used to fix the internal fixation structure 2.
The sliding groove 111 is a semicircular groove, and the length of the sliding groove 111 is smaller than that of the sliding way 11; this arrangement can serve as a blocking fixing for the inner fixing structure 2 when the inner fixing structure 2 is fixed in the fixing hole 112.
The fixing hole 112 is a hole penetrating through the upper part and the lower part of the slideway 11, and the inner diameter of the fixing hole 112 is slightly larger than the outer diameter of the bottom of the internal fixing structure 2; this arrangement ensures that the fixing holes 112 can receive the lower end of the internal structure, thereby fixing the internal fixing structure 2 to the chute 11.
The fixing holes 112 are configured to be magnetic fixing holes 112, so as to fix the internal fixing structure 2 better by magnetic adsorption.
The internal fixing structure 2 comprises a base 21 at the bottom and an extensible structure 22 at the upper part, and the base 21 and the extensible structure 22 are integrally connected; the base 21 can move along the slide 11, and the extendable structure 22 can extend out of the window 114 and be fixed on the inner wall of the marrow cavity.
The extendable structures 22 are arranged into arc-shaped strip structures; the arc-shaped structure can avoid scratching the inner wall of the marrow cavity, and when the inner fixing structure 2 is fixed in the fixing hole 112, the arc-shaped strip-shaped structure extends out of the window 114 and is fixed on the inner wall of the marrow cavity.
An operating rod 24 is arranged on the base 21, and the operating rod 24 is connected with the base 21 of the internal fixing structure 2 in a combined manner; this combination connection allows the operating rod 24 to be removed after the internal fixation structure 2 has been fixed.
A lateral blocking projection 241 is provided at the distal end of the operating lever 24; the lateral blocking projection 241 serves to fix the position of the operating lever 24.
A soft split snap ring 23 is arranged on the base 21, the split snap ring 23 has an upward opening, and the split snap ring 23 is integrally connected with the base 21; in use, the operating rod 24 is placed into the snap ring 23, and the blocking protrusion can fix the operating rod 24 in the snap ring 23.
The lower part of the base 21 is made of a magnetic material, and a magnetic adsorption effect is generated between the lower part of the base 21 and the fixing hole 112, so that the internal fixing structure 2 is firmly fixed in the fixing hole 112.
The size of the window 114 is larger than that of the arc-shaped strip structure, and the size of the window 114 is smaller than that of the side wall of the intramedullary nail; the position of the window 114 corresponds to the position of the arc-shaped strip-shaped structure; this arrangement ensures that the curved strip-like structure can smoothly extend out of the window 114 when the internal fixation structure 2 is fixed.
When the intramedullary nail locking device is used, the operating rod 24 is firstly connected with the split snap ring 23 in a combined mode, then the operating rod 24 is controlled to control the internal fixing structure 2 to move, after the internal fixing structure 2 is pushed to reach the locking structure position, the base 21 of the internal fixing structure 2 enters the fixing hole 112, the extendable structure 22 extends out of the window 114 and is fixed on the inner wall of the marrow cavity, then the operating rod 24 is lifted upwards, the operating rod 24 is lifted out of the split snap ring 23, and then the operating rod 24 is taken out of the intramedullary nail.
EXAMPLE 3A multifunctional intramedullary nail
A multifunctional intramedullary nail comprises an intramedullary nail body 1, a slideway 11 arranged inside the intramedullary nail body 1, and an internal fixing structure 2 moving along the slideway 11 and used for preventing the intramedullary nail from shaking; the intramedullary nail is characterized in that the intramedullary nail main body 1 is a cavity intramedullary nail, and a plurality of windows 114 are arranged on the wall of the cavity; the internal fixation structure 2 comprises an extendable structure 22; the window 114 includes a window 114 through which the extendable structure 22 extends; the slideway 11 is integrally connected with the intramedullary nail main body 1 and has the same direction with the intramedullary nail, and the internal fixing structure 2 is combined and connected with the slideway 11; through the arrangement of the intramedullary nail with the window 114, after the internal fixation structure 2 reaches the window 114 for the extension structure to extend out, the extension structure extends out from the window 114 and is fixed on the inner wall of a marrow cavity, so that the intramedullary nail is prevented from shaking in the marrow cavity, and unnecessary complications are avoided.
The intramedullary nail main body 1 can be an intramedullary nail which can realize the function of the intramedullary nail main body in any shape, wherein a hexagonal polygonal cavity intramedullary nail is preferably arranged; the intramedullary nail with the shape has stronger stability.
The slideway 11 is arranged at the edge position of the middle height in the intramedullary nail, and the side edge of the slideway 11 is integrally connected with the inner side wall of the intramedullary nail; this arrangement ensures stability of the slideway 11.
A preset track is arranged on the slide way 11; a locking structure is arranged on the predetermined track near the corresponding window 114, after the internal fixing structure 2 moves to the locking structure along the predetermined track, the lower end of the internal fixing structure is fixed at the locking structure, the upper end of the internal fixing structure is the extending structure, and the extending structure extends out of the window 114 and is fixed on the inner wall of the marrow cavity.
The locking structure comprises a sliding groove 111 and a fixing hole 112, and the fixing hole 112 is arranged at the tail end of the sliding groove 111; the fixing holes 112 are used to fix the internal fixation structure 2.
The sliding groove 111 is a semicircular groove, and the length of the sliding groove 111 is smaller than that of the sliding way 11; this arrangement can serve as a blocking fixing for the inner fixing structure 2 when the inner fixing structure 2 is fixed in the fixing hole 112.
The fixing hole 112 is a hole penetrating through the upper part and the lower part of the slideway 11, and the inner diameter of the fixing hole 112 is slightly larger than the outer diameter of the bottom of the internal fixing structure 2; this arrangement ensures that the fixing holes 112 can receive the lower end of the internal structure, thereby fixing the internal fixing structure 2 to the chute 11.
The fixing holes 112 are configured to be magnetic fixing holes 112, so as to fix the internal fixing structure 2 better by magnetic adsorption.
Two slideways 11 are arranged, and the two slideways 11 are respectively arranged at the left and right side edge positions of the middle height in the intramedullary nail.
The lengths of the two slideways 11 and the length of the sliding groove 111 are set to be the same size; the positions of the fixing holes 112 are arranged on the same horizontal line; this arrangement makes the left and right internal fixation structures 2 symmetrical to each other, providing stability on the one hand and aesthetics on the other hand.
A support rod 113 is arranged at the bottom of the slideway 11, one end of the support rod 113 is integrally connected with the bottom of the slideway 11, and the other end of the support rod 113 is integrally connected with the inner side wall of the intramedullary nail; this arrangement may enhance the stability of the slideway 11.
The internal fixing structure 2 comprises a base 21 at the bottom and an extensible structure 22 at the upper part, and the base 21 and the extensible structure 22 are integrally connected; the base 21 can move along the slide 11, and the extendable structure 22 can extend out of the window 114 and be fixed on the inner wall of the marrow cavity.
The extendable structures 22 are arranged into arc-shaped strip structures; the arc-shaped structure can avoid scratching the inner wall of the marrow cavity, and when the inner fixing structure 2 is fixed in the fixing hole 112, the arc-shaped strip-shaped structure extends out of the window 114 and is fixed on the inner wall of the marrow cavity.
An operating rod 24 is arranged on the base 21, and the operating rod 24 is connected with the base 21 of the internal fixing structure 2 in a combined manner; this combination connection allows the operating rod 24 to be removed after the internal fixation structure 2 has been fixed.
A lateral blocking projection 241 is provided at the distal end of the operating lever 24; the lateral blocking projection 241 serves to fix the position of the operating lever 24.
A soft split snap ring 23 is arranged on the base 21, the split snap ring 23 has an upward opening, and the split snap ring 23 is integrally connected with the base 21; in use, the operating rod 24 is placed into the snap ring 23, and the blocking protrusion can fix the operating rod 24 in the snap ring 23.
The lower part of the base 21 is made of a magnetic material, and a magnetic adsorption effect is generated between the lower part of the base 21 and the fixing hole 112, so that the internal fixing structure 2 is firmly fixed in the fixing hole 112.
The size of the window 114 is larger than that of the arc-shaped strip structure, and the size of the window 114 is smaller than that of the side wall of the intramedullary nail; the position of the window 114 corresponds to the position of the arc-shaped strip-shaped structure; this arrangement ensures that the curved strip-like structure can smoothly extend out of the window 114 when the internal fixation structure 2 is fixed.
When in use, the operating rod 24 is firstly combined and connected with the split snap ring 23, then the operating rod 24 is controlled to control the movement of the internal fixing structure 2, the internal fixing structure 2 is pushed to reach the locking structure position, the base 21 of the internal fixing structure 2 enters the fixing hole 112, the extendable structure 22 extends out of the window 114 and is fixed on the inner wall of the marrow cavity, then the operating rod 24 is lifted upwards, the operating rod 24 is lifted out of the split snap ring 23, and then the operating rod 24 is taken out of the intramedullary nail; the two slideways 11 can realize multi-point and multi-directional fixation, and enhance the stability of the intramedullary nail in the marrow cavity.
EXAMPLE 4A multifunctional intramedullary nail
A multifunctional intramedullary nail comprises an intramedullary nail body 1, a slideway 11 arranged inside the intramedullary nail body 1, and an internal fixing structure 2 moving along the slideway 11 and used for preventing the intramedullary nail from shaking; the intramedullary nail is characterized in that the intramedullary nail main body 1 is a cavity intramedullary nail, and a plurality of windows 114 are arranged on the wall of the cavity; the internal fixation structure 2 comprises an extendable structure 22; the window 114 includes a window 114 through which the extendable structure 22 extends; the slideway 11 is integrally connected with the intramedullary nail main body 1 and has the same direction with the intramedullary nail, and the internal fixing structure 2 is combined and connected with the slideway 11; through the arrangement of the intramedullary nail with the window 114, after the internal fixation structure 2 reaches the window 114 for the extension structure to extend out, the extension structure extends out from the window 114 and is fixed on the inner wall of a marrow cavity, so that the intramedullary nail is prevented from shaking in the marrow cavity, and unnecessary complications are avoided.
The intramedullary nail main body 1 can be an intramedullary nail which can realize the function of the intramedullary nail main body in any shape, wherein a hexagonal polygonal cavity intramedullary nail is preferably arranged; the intramedullary nail with the shape has stronger stability.
The slideway 11 is arranged at the edge position of the middle height in the intramedullary nail, and the side edge of the slideway 11 is integrally connected with the inner side wall of the intramedullary nail; this arrangement ensures stability of the slideway 11.
A preset track is arranged on the slide way 11; a locking structure is arranged on the predetermined track near the corresponding window 114, after the internal fixing structure 2 moves to the locking structure along the predetermined track, the lower end of the internal fixing structure is fixed at the locking structure, the upper end of the internal fixing structure is the extending structure, and the extending structure extends out of the window 114 and is fixed on the inner wall of the marrow cavity.
The locking structure comprises a sliding groove 111 and a fixing hole 112, and the fixing hole 112 is arranged at the tail end of the sliding groove 111; the fixing holes 112 are used to fix the internal fixation structure 2.
The sliding groove 111 is a semicircular groove, and the length of the sliding groove 111 is smaller than that of the sliding way 11; this arrangement can serve as a blocking fixing for the inner fixing structure 2 when the inner fixing structure 2 is fixed in the fixing hole 112.
The fixing hole 112 is a hole penetrating through the upper part and the lower part of the slideway 11, and the inner diameter of the fixing hole 112 is slightly larger than the outer diameter of the bottom of the internal fixing structure 2; this arrangement ensures that the fixing holes 112 can receive the lower end of the internal structure, thereby fixing the internal fixing structure 2 to the chute 11.
The fixing holes 112 are configured to be magnetic fixing holes 112, so as to fix the internal fixing structure 2 better by magnetic adsorption.
Two slideways 11 are arranged, and the two slideways 11 are respectively arranged at the left and right side edge positions of the middle height in the intramedullary nail.
The lengths of the two slideways 11 and the length of the sliding groove 111 are set to be different sizes; the position of the fixing hole 112 is different because the length of the sliding groove 111 is different; the arrangement makes the positions of the left and right fixing holes 112 not on the same straight line, so the fixing positions of the internal fixing structure 2 are different, the acting forces of the left internal fixing structure 2 and the right internal fixing structure 2 are concentrated on different positions, and the multi-point fixation ensures the stability of the intramedullary nail in the marrow cavity.
A support rod 113 is arranged at the bottom of the slideway 11, one end of the support rod 113 is integrally connected with the bottom of the slideway 11, and the other end of the support rod 113 is integrally connected with the inner side wall of the intramedullary nail; this arrangement may enhance the stability of the slideway 11.
The internal fixing structure 2 comprises a base 21 at the bottom and an extensible structure 22 at the upper part, and the base 21 and the extensible structure 22 are integrally connected; the base 21 can move along the slide 11, and the extendable structure 22 can extend out of the window 114 and be fixed on the inner wall of the marrow cavity.
The extendable structures 22 are arranged into arc-shaped strip structures; the arc-shaped structure can avoid scratching the inner wall of the marrow cavity, and when the inner fixing structure 2 is fixed in the fixing hole 112, the arc-shaped strip-shaped structure extends out of the window 114 and is fixed on the inner wall of the marrow cavity.
An operating rod 24 is arranged on the base 21, and the operating rod 24 is connected with the base 21 of the internal fixing structure 2 in a combined manner; this combination connection allows the operating rod 24 to be removed after the internal fixation structure 2 has been fixed.
A lateral blocking projection 241 is provided at the distal end of the operating lever 24; the lateral blocking projection 241 serves to fix the position of the operating lever 24.
A soft split snap ring 23 is arranged on the base 21, the split snap ring 23 has an upward opening, and the split snap ring 23 is integrally connected with the base 21; in use, the operating rod 24 is placed into the snap ring 23, and the blocking protrusion can fix the operating rod 24 in the snap ring 23.
The lower part of the base 21 is made of a magnetic material, and a magnetic adsorption effect is generated between the lower part of the base 21 and the fixing hole 112, so that the internal fixing structure 2 is firmly fixed in the fixing hole 112.
The size of the window 114 is larger than that of the arc-shaped strip structure, and the size of the window 114 is smaller than that of the side wall of the intramedullary nail; the position of the window 114 corresponds to the position of the arc-shaped strip-shaped structure; this arrangement ensures that the curved strip-like structure can smoothly extend out of the window 114 when the internal fixation structure 2 is fixed.
A pipeline structure 3 is arranged in the intramedullary nail; operations such as flushing, injecting drugs and implanting materials can be performed through the pipe structure 3.
A plurality of branch pipes 31 are arranged on the circular bottom cover, 2 branch pipes 31 are arranged, and each branch pipe 31 faces to a different direction; the arrangement can fully wash, inject medicine or implant materials in the bone marrow cavity.
The branch line 31 is provided as a soft cylindrical tube; the soft branch lines 31 facilitate removal from or insertion into the intramedullary nail.
The window 114 is arranged on the side wall of the intramedullary nail corresponding to the position of the branch pipeline 31; the branch line 31 passes irrigation fluid, drug or implant material, etc. to the bone marrow cavity through the window 114.
When in use, the operating rod 24 is firstly combined and connected with the split snap ring 23, then the operating rod 24 is controlled to control the movement of the internal fixing structure 2, the internal fixing structure 2 is pushed to reach the locking structure position, the base 21 of the internal fixing structure 2 enters the fixing hole 112, the extendable structure 22 extends out of the window 114 and is fixed on the inner wall of the marrow cavity, then the operating rod 24 is lifted upwards, the operating rod 24 is lifted out of the split snap ring 23, and then the operating rod 24 is taken out of the intramedullary nail; when the operations of flushing, injecting medicine, implanting materials and the like are required, the pipeline structure 3 is placed in a cavity of the intramedullary nail, the branch pipeline 31 is just opposite to an affected part by adjusting the position of the intramedullary nail, then the injector is placed in the pipeline structure 3 to be injected, or flushing liquid, medicine or implanting materials are injected into the pipeline structure 3 to flow through the branch pipeline 31 to reach the affected part.
EXAMPLE 5A multifunctional intramedullary nail
A multifunctional intramedullary nail comprises an intramedullary nail body 1, a slideway 11 arranged inside the intramedullary nail body 1, and an internal fixing structure 2 moving along the slideway 11 and used for preventing the intramedullary nail from shaking; the intramedullary nail is characterized in that the intramedullary nail main body 1 is a cavity intramedullary nail, and a plurality of windows 114 are arranged on the wall of the cavity; the internal fixation structure 2 comprises an extendable structure 22; the window 114 includes a window 114 through which the extendable structure 22 extends; the slideway 11 is integrally connected with the intramedullary nail main body 1 and has the same direction with the intramedullary nail, and the internal fixing structure 2 is combined and connected with the slideway 11; through the arrangement of the intramedullary nail with the window 114, after the internal fixation structure 2 reaches the window 114 for the extension structure to extend out, the extension structure extends out from the window 114 and is fixed on the inner wall of a marrow cavity, so that the intramedullary nail is prevented from shaking in the marrow cavity, and unnecessary complications are avoided.
The intramedullary nail main body 1 can be an intramedullary nail which can realize the function of the intramedullary nail main body in any shape, wherein a hexagonal polygonal cavity intramedullary nail is preferably arranged; the intramedullary nail with the shape has stronger stability.
The slideway 11 is arranged at the edge position of the middle height in the intramedullary nail, and the side edge of the slideway 11 is integrally connected with the inner side wall of the intramedullary nail; this arrangement ensures stability of the slideway 11.
A preset track is arranged on the slide way 11; a locking structure is arranged on the predetermined track near the corresponding window 114, after the internal fixing structure 2 moves to the locking structure along the predetermined track, the lower end of the internal fixing structure is fixed at the locking structure, the upper end of the internal fixing structure is the extending structure, and the extending structure extends out of the window 114 and is fixed on the inner wall of the marrow cavity.
The locking structure comprises a sliding groove 111 and a fixing hole 112, and the fixing hole 112 is arranged at the tail end of the sliding groove 111; the fixing holes 112 are used to fix the internal fixation structure 2.
The sliding groove 111 is a semicircular groove, and the length of the sliding groove 111 is smaller than that of the sliding way 11; this arrangement can serve as a blocking fixing for the inner fixing structure 2 when the inner fixing structure 2 is fixed in the fixing hole 112.
The fixing hole 112 is a hole penetrating through the upper part and the lower part of the slideway 11, and the inner diameter of the fixing hole 112 is slightly larger than the outer diameter of the bottom of the internal fixing structure 2; this arrangement ensures that the fixing holes 112 can receive the lower end of the internal structure, thereby fixing the internal fixing structure 2 to the chute 11.
The fixing holes 112 are configured to be magnetic fixing holes 112, so as to fix the internal fixing structure 2 better by magnetic adsorption.
Two slideways 11 are arranged, and the two slideways 11 are respectively arranged at the left and right side edge positions of the middle height in the intramedullary nail.
The lengths of the two slideways 11 and the length of the sliding groove 111 are set to be different sizes; the position of the fixing hole 112 is different because the length of the sliding groove 111 is different; the arrangement makes the positions of the left and right fixing holes 112 not on the same straight line, so the fixing positions of the internal fixing structure 2 are different, the acting forces of the left internal fixing structure 2 and the right internal fixing structure 2 are concentrated on different positions, and the multi-point fixation ensures the stability of the intramedullary nail in the marrow cavity.
A support rod 113 is arranged at the bottom of the slideway 11, one end of the support rod 113 is integrally connected with the bottom of the slideway 11, and the other end of the support rod 113 is integrally connected with the inner side wall of the intramedullary nail; this arrangement may enhance the stability of the slideway 11.
The internal fixing structure 2 comprises a base 21 at the bottom and an extensible structure 22 at the upper part, and the base 21 and the extensible structure 22 are integrally connected; the base 21 can move along the slide 11, and the extendable structure 22 can extend out of the window 114 and be fixed on the inner wall of the marrow cavity.
The extendable structures 22 are arranged into arc-shaped strip structures; the arc-shaped structure can avoid scratching the inner wall of the marrow cavity, and when the inner fixing structure 2 is fixed in the fixing hole 112, the arc-shaped strip-shaped structure extends out of the window 114 and is fixed on the inner wall of the marrow cavity.
An operating rod 24 is arranged on the base 21, and the operating rod 24 is connected with the base 21 of the internal fixing structure 2 in a combined manner; this combination connection allows the operating rod 24 to be removed after the internal fixation structure 2 has been fixed.
A lateral blocking projection 241 is provided at the distal end of the operating lever 24; the lateral blocking projection 241 serves to fix the position of the operating lever 24.
A soft split snap ring 23 is arranged on the base 21, the split snap ring 23 has an upward opening, and the split snap ring 23 is integrally connected with the base 21; in use, the operating rod 24 is placed into the snap ring 23, and the blocking protrusion can fix the operating rod 24 in the snap ring 23.
The lower part of the base 21 is made of a magnetic material, and a magnetic adsorption effect is generated between the lower part of the base 21 and the fixing hole 112, so that the internal fixing structure 2 is firmly fixed in the fixing hole 112.
The size of the window 114 is larger than that of the arc-shaped strip structure, and the size of the window 114 is smaller than that of the side wall of the intramedullary nail; the position of the window 114 corresponds to the position of the arc-shaped strip-shaped structure; this arrangement ensures that the curved strip-like structure can smoothly extend out of the window 114 when the internal fixation structure 2 is fixed.
A pipeline structure 3 is arranged in the intramedullary nail; operations such as flushing, injecting drugs and implanting materials can be performed through the pipe structure 3.
Arranging branch pipes 31 on the circular bottom cover, wherein the branch pipes 31 are arranged 2, and each branch pipe 31 faces to different directions; the arrangement can fully wash, inject medicine or implant materials in the bone marrow cavity.
The branch line 31 is provided as a soft cylindrical tube; the soft branch lines 31 facilitate removal from or insertion into the intramedullary nail.
The window 114 is arranged on the side wall of the intramedullary nail corresponding to the position of the branch pipeline 31; the branch line 31 passes irrigation fluid, drug or implant material, etc. to the bone marrow cavity through the window 114.
Arranging a pipeline fixing structure, wherein the pipeline fixing structure is arranged at the upper half part inside the intramedullary nail and is integrally connected with the inner side wall of the top of the intramedullary nail; the arrangement can leave the space of the lower half part inside the intramedullary nail for placing other surgical instruments or performing other operations.
The number of the pipeline fixing structures is 2, the two pipeline fixing structures are respectively distributed at the near end and the far end of the pipeline structure 3, and the height of the pipeline fixing structure at the near end is larger than that of the pipeline fixing structure at the far end; the near-end of pipeline structure 3 is the one end that is close to the operator promptly, and the distal end of pipeline structure 3 is the one end of keeping away from the operator promptly, and this kind of setting has certain inclination when making pipeline structure 3 place on pipeline fixed knot constructs, does benefit to outflow pipeline structure 3 arrival marrow cavity such as flush fluid, liquid medicine or implant material.
The pipeline fixing structure is arranged as a bearing ring 115, and the upper end of the bearing ring 115 is integrally connected with the side wall of the top of the intramedullary nail; the arrangement can occupy smaller space and leave more space for other operations.
A semicircular plugging sheet is arranged on the supporting ring 115 at the far end; the plugging sheet can fix the pipeline structure 3 and prevent the pipeline structure 3 from slipping.
When in use, the operating rod 24 is firstly combined and connected with the split snap ring 23, then the operating rod 24 is controlled to control the movement of the internal fixing structure 2, the internal fixing structure 2 is pushed to reach the locking structure position, the base 21 of the internal fixing structure 2 enters the fixing hole 112, the extendable structure 22 extends out of the window 114 and is fixed on the inner wall of the marrow cavity, then the operating rod 24 is lifted upwards, the operating rod 24 is lifted out of the split snap ring 23, and then the operating rod 24 is taken out of the intramedullary nail; when the operations of flushing, injecting medicine, implanting materials and the like need to be carried out, firstly, the pipeline structure 3 is installed on the pipeline fixing structure, the position of the intramedullary nail is adjusted to enable the branch pipeline 31 to be right opposite to the affected part, then, the injector is placed into the pipeline structure 3 to be injected, or flushing liquid, medicine or implanting materials are injected into the pipeline structure 3 and flow through the branch pipeline 31 to reach the affected part; alternatively, instead of mounting the conduit structure 3, a syringe or syringe-like device may be placed directly into the cavity of the intramedullary nail and irrigation fluid, medication or implant material may be injected directly into the intramedullary cavity through the window 114.
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 (5)
1. A multifunctional intramedullary nail comprises an intramedullary nail main body, a slideway arranged in the intramedullary nail main body and an internal fixing structure moving along the slideway and used for preventing the intramedullary nail from shaking; the intramedullary nail is characterized in that the intramedullary nail main body is a cavity intramedullary nail, and a plurality of windows are arranged on the wall of the cavity; the slideway is integrally connected with the intramedullary nail main body and has the same direction with the intramedullary nail, and the internal fixing structure is combined and connected with the slideway; the slideway is arranged at the edge position of the middle height in the intramedullary nail, the side edge of the slideway is integrally connected with the inner side wall of the intramedullary nail, a preset track is arranged on the slideway, and a locking structure is arranged on the preset track close to the corresponding window; the internal fixing structure comprises a base at the bottom and an extensible structure at the upper part, the base is integrally connected with the extensible structure, and the window comprises a window for the extensible structure to extend out; an operating rod is arranged on the base and is connected with the base of the internal fixing structure in a combined mode, a soft split clamping ring is arranged on the base, the opening of the split clamping ring faces upwards, and the split clamping ring is integrally connected with the base; the intramedullary nail is characterized in that a pipeline fixing structure is arranged on the upper half part inside the intramedullary nail, and the pipeline fixing structure is integrally connected with the inner side wall of the top of the intramedullary nail.
2. The multifunctional intramedullary nail of claim 1, wherein the locking structure comprises a sliding slot and a fixing hole, the fixing hole is disposed at a distal end of the sliding slot.
3. The multifunctional intramedullary nail of claim 2, wherein two runners are provided, one at each of the left and right edges of the intramedullary nail at the mid-height.
4. The multifunctional intramedullary nail of claim 1, wherein the extendable structure is configured as an arc-shaped strip structure.
5. The multi-functional intramedullary nail of claim 1, wherein a canal structure is provided inside the intramedullary nail.
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| CN101507652A (en) * | 2009-03-20 | 2009-08-19 | 周志海 | Knee joint approach intramedullary 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 |
| CN205073001U (en) * | 2015-09-26 | 2016-03-09 | 无锡市人民医院 | Intramedullary nail with locking mechanism |
| CN107280748B (en) * | 2017-07-27 | 2023-07-04 | 焦作市新港医疗设备有限公司 | Femur intramedullary nail |
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