CN113397676A - Anti-rotation orthopedic internal fixture - Google Patents
Anti-rotation orthopedic internal fixture Download PDFInfo
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- CN113397676A CN113397676A CN202110771888.9A CN202110771888A CN113397676A CN 113397676 A CN113397676 A CN 113397676A CN 202110771888 A CN202110771888 A CN 202110771888A CN 113397676 A CN113397676 A CN 113397676A
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- outer sleeve
- sliding
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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
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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
- A61B17/74—Devices for the head or neck or trochanter of the femur
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone
Abstract
The invention discloses an anti-rotation orthopedic internal fixture, which comprises an outer sleeve, a positioning assembly, an operation assembly for controlling the movement of the positioning assembly and a return spring, wherein the outer sleeve is fixedly connected with the positioning assembly; the operating assembly comprises a near-end push rod and a far-end sliding rod; the near-end push rod is arranged inside the outer sleeve and is in sliding connection with the outer sleeve; the far-end slide bar is arranged in the outer sleeve and positioned at the inner side of the near-end push rod, and the far-end slide bar is connected with the outer sleeve in a sliding manner; the positioning components are respectively arranged at two ends of the far-end sliding rod and are detachably connected with the far-end sliding rod; one end of the reset spring is integrally connected with the pipe orifice end of the far-end slide rod far away from the threaded pipe, and the other end of the reset spring is integrally connected with the bottom of the inner side of the threaded pipe. The design scheme has the advantages of rotation resistance, avoidance of wound caused by a plurality of internal fixing objects, good protection of blood circulation of the fracture end, avoidance of damage to the fracture end and blood circulation of the fracture part, and avoidance of ischemic necrosis of some parts. Has very important significance for avulsion fracture, diaphysis fracture, femoral neck fracture and the like.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to an anti-rotation orthopedic internal fixation article.
Background
At present, avulsion fracture, diaphysis fracture, femoral neck fracture and the like frequently occur clinically, and for avulsion fracture, the avulsion fracture is fixed clinically by screws or kirschner wires, but the existing products have no anti-rotation capability in fixing avulsion fracture blocks or large fracture blocks, such as a single kirschner wire, and fracture end rotation displacement is easy to occur after operation. If a plurality of Kirschner wires can generate more wound than a single Kirschner wire, the anti-rotation capability of two Kirschner wires is poor, according to the mathematical theory, three Kirschner wires can be fixed stably because a plane is fixed by three points, but the wound is obviously larger than the wound of a single Kirschner wire, and the risk of damaging blood circulation can exist; when the existing product is fixed in the backbone medullary, a plurality of cuts are formed, and the locking nails at the two ends bring new soft tissue and bone trauma; when the existing product is used for fixing femoral neck fracture, the traditional three hollow-core nails have larger wound than a single internal fixture, and damage to femoral head blood supply and easily cause femoral head necrosis. In recent years, a single internal fixture has poor anti-rotation capability, and is easy to cause the rotation and displacement of fracture ends, so that nonunion or serious deformity healing is caused.
The invention aims at the problems and provides an anti-rotation orthopedic internal fixture.
Disclosure of Invention
To overcome the problems noted in the background, the present invention provides an anti-rotation orthopedic internal fixation.
An anti-rotation orthopedic internal fixture comprises an outer sleeve, a positioning assembly, an operation assembly for controlling the movement of the positioning assembly and a return spring; the operating assembly comprises a near-end push rod and a far-end sliding rod; the near-end push rod is arranged inside the outer sleeve and is in sliding connection with the outer sleeve; the far-end sliding rod is arranged in the outer sleeve and positioned on the inner side of the near-end push rod, and the far-end sliding rod is connected with the outer sleeve in a sliding manner; the positioning assemblies are respectively arranged at two ends of the far-end sliding rod and are detachably connected with the far-end sliding rod; one end of the reset spring is integrally connected with the pipe orifice end of the far-end sliding rod, which is far away from the threaded pipe, and the other end of the reset spring is integrally connected with the bottom of the inner side of the threaded pipe.
Further, the outer sleeve comprises a threaded tube, a distal end guide structure and a tightening device.
Furthermore, the screwed pipe is a tubular structure with round holes on the side walls of the two ends, the two ends of the outer side are respectively provided with a far-end thread and a near-end thread which are used for integrally fixing the screwed pipe in the body of a patient, and the opening of the inner side is provided with an internal thread matched with the near-end push rod.
Further, the far-end guide structure is an arc-shaped plate-shaped structure; the far-end guide structure is arranged in a round hole of the outer sleeve far away from the pipe orifice end and is integrally connected with the outer sleeve.
Furthermore, the tightening structure is a hexagonal prism-shaped structure with a cylindrical through hole in the center, is arranged at the pipe orifice of the outer sleeve and is integrally connected with the outer sleeve.
Further, the near-end push rod comprises a stud, a rotating assembly and a push rod.
Further, the rotating assembly includes a bearing.
Furthermore, the stud is of a cylindrical structure with threads on the outer side, and one end of the stud is integrally connected with the inner wall of the bearing; the push rod is of a circular barrel-shaped structure, and the inner side of the push rod is integrally connected with the outer wall of the bearing.
Furthermore, the far-end sliding rod comprises a rod body, a far-end sliding assembly and a near-end sliding assembly.
Further, the body of rod is cylindric structure, distal end slip subassembly and near-end slip subassembly set up respectively at the body of rod both ends, body of rod and distal end slip subassembly, near-end slip subassembly an organic whole are connected.
Further, the distal slide assembly includes a distal ramp and a distal ramp.
Further, 4 sets of the distal end sliding assemblies are provided, arranged in a 90 ° circumferential arrangement.
Furthermore, the far-end inclined plane is of an inclined plane structure, is arranged at the pipe orifice end of the rod body far away from the outer sleeve and is integrally connected with the rod body; the far-end slideway is arranged on the inclined plane of the far-end slideway and is integrally connected with the far-end slideway.
Further, the far-end slideway comprises a far-end I-shaped slideway and a far-end plate type slideway.
Further, the far-end I-shaped slideway is of a T-shaped structure, is arranged on a central axis of the far-end inclined plane and is integrally connected with the far-end inclined plane; the far-end plate type slide way is of a convex structure, is respectively arranged on two sides of the far-end inclined plane and is integrally connected with the far-end inclined plane.
Further, the proximal slide assembly includes a proximal ramp and a proximal ramp.
Further, 4 sets of the proximal end sliding assemblies are provided, arranged in a 90 ° circumferential arrangement.
Furthermore, the near-end inclined plane is of an inclined plane structure, is arranged at the pipe orifice end of the rod body close to the outer sleeve and is integrally connected with the rod body; the near-end slide way is arranged on the inclined plane of the near-end slide way and is integrally connected with the near-end slide way.
Further, the near-end slideway comprises a near-end I-shaped slideway and a near-end plate type slideway.
Further, the near-end I-shaped slideway is of a T-shaped structure, is arranged on the central axis of the near-end inclined plane and is integrally connected with the near-end inclined plane; the near-end plate type slide ways are of a convex structure, are respectively arranged on two sides of the near-end inclined plane and are integrally connected with the near-end inclined plane.
Further, the positioning assembly comprises a distal positioning structure and a proximal positioning structure.
Further, the distal positioning structure is slidably connected with the distal sliding assembly; the near-end positioning structure is connected with the near-end sliding assembly in a sliding mode.
Further, the far-end positioning structure comprises a far-end positioning nail, a far-end I-shaped sliding groove and a far-end plate type sliding groove.
Further, 4 sets of the distal positioning structures are arranged in a 90-degree circumferential arrangement.
Furthermore, the far-end positioning nail is of a cylindrical structure with two inclined surfaces at two ends, and the bottom of the far-end positioning nail is integrally connected with the far-end I-shaped sliding groove and the far-end plate-type sliding groove; the far-end I-shaped sliding groove is a T-shaped groove, is arranged on the central axis of the bottom inclined plane of the far-end positioning nail and is spliced with the far-end I-shaped sliding way; the far-end plate type sliding grooves are concave grooves and are respectively arranged on two sides of the bottom inclined plane of the far-end positioning nail and are connected with the far-end plate type sliding ways in an inserting mode.
Further, the near-end positioning structure comprises a near-end positioning nail, a near-end I-shaped sliding groove and a near-end plate type sliding groove.
Further, 4 sets of proximal positioning structures are provided, arranged circumferentially at 90 °.
Further, the near-end positioning nail is of a cylindrical structure with inclined planes at two ends, and the bottom of the near-end positioning nail is integrally connected with the near-end I-shaped sliding groove and the near-end plate type sliding groove; the near-end I-shaped sliding groove is a T-shaped groove, is arranged on the central axis of the bottom inclined plane of the near-end positioning nail and is inserted into the near-end I-shaped sliding way; the near-end plate type sliding grooves are concave grooves and are respectively arranged on two sides of the bottom inclined plane of the near-end positioning nail and are connected with the near-end plate type sliding ways in an inserting mode.
The invention has the beneficial effects that: the anti-rotation fracture sleeve has the advantages of rotation resistance, avoidance of trauma caused by a plurality of internal fixing objects, good protection of blood circulation of the fracture end, avoidance of damage to the fracture end and blood circulation of the fracture part which does not occur, and avoidance of ischemic necrosis of some parts. Has very important significance for avulsion fracture, diaphysis fracture, femoral neck fracture and the like.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the overall structure of the present invention
FIG. 3 is a schematic view and a partial cross-sectional view of the outer sleeve structure of the present invention;
FIG. 4 is a cross-sectional view of the proximal pusher rod of the present invention;
FIG. 5 is a schematic view of a distal slide bar of the present invention;
FIG. 6 is a schematic view of a distal positioning structure of the present invention;
FIG. 7 is a cross-sectional view of a distal positioning structure of the present invention;
FIG. 8 is a schematic view of a proximal positioning structure of the present invention;
FIG. 9 is a cross-sectional view of a proximal positioning structure of the present invention;
FIG. 10 is a sectional view of the whole structure in embodiment 3 of the present invention;
FIG. 11 is a schematic view of a distal slide bar in example 3 of the present invention;
FIG. 12 is a schematic view of a distal positioning structure in embodiment 3 of the present invention;
FIG. 13 is a schematic view of a proximal positioning structure in embodiment 3 of the present invention;
in the figure, 1, an outer sleeve; 11. a threaded pipe; 111. a distal thread; 112. a proximal thread; 113. an internal thread; 12. a distal guide structure; 13. tightening the device; 2. a proximal push rod; 21. a stud; 22. a rotating assembly; 23. a push rod; 3. a distal slide bar; 31. a rod body; 32. a distal slide assembly; 321. a distal bevel; 322. a distal slide; 3221. a distal i-shaped chute; 3222. a distal plate slide; 33. a proximal slide assembly; 331. a proximal bevel; 332. a proximal end slide; 3321. a proximal end I-shaped slideway; 3322. a proximal end plate slide; 4. a positioning assembly; 41. a distal positioning structure; 411. a distal positioning pin; 412. a distal I-shaped chute; 412. a distal plate chute; 42. a proximal positioning structure; 421. a proximal end positioning pin; 412. a proximal end I-shaped chute; 422. a proximal end plate type chute; 5. a return spring.
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
Referring to fig. 1-2, an anti-rotation orthopedic internal fixture according to the present invention comprises an outer sleeve 1, a positioning assembly 4, an operating assembly for controlling the movement of the positioning assembly 4, and a return spring 5; the operating assembly comprises a proximal push rod 223 and a distal slide rod 3; the near-end push rod 223 is arranged inside the outer sleeve 1 and is connected with the outer sleeve 1 in a sliding manner; the far-end slide bar 3 is arranged inside the outer sleeve 1 and positioned inside the near-end push rod 223, and the far-end slide bar 3 is connected with the outer sleeve 1 in a sliding manner; the positioning components 4 are respectively arranged at two ends of the far-end sliding rod 3 and detachably connected with the far-end sliding rod 3; one end of the return spring 5 is integrally connected with the pipe orifice end of the far-end sliding rod 3 far away from the threaded pipe 11, and the other end of the return spring is integrally connected with the bottom of the inner side of the threaded pipe 11. The outer cannula 1 comprises a threaded tube 11, a distal guide structure 12 and a tightening device 13. The proximal push rod 223 includes a stud 21, a rotating component 22 and a push rod 23. The inner side of the rotating component 22 is integrally connected with the stud 21, and the outer side is integrally connected with the push rod 23.
The rotating assembly 22 includes bearings.
The distal slide bar 3 comprises a rod 31, a distal slide assembly 32 and a proximal slide assembly 33. The distal sliding element 32 and the proximal sliding element 33 are respectively disposed at two ends of the rod 31, and the rod 31 is integrally connected to the distal sliding element 32 and the proximal sliding element 33. Distal slide assembly 32 includes a distal ramp 321 and a distal ramp 322. Distal slide assemblies 32 are in 4 sets arranged in a 90 circumferential array.
The distal slide 322 includes a distal i-shaped slide 3221 and a distal plate slide 3222. The proximal slide assembly 33 includes a proximal ramp 331 and a proximal ramp 332. The proximal slide assemblies 33 are 4 sets arranged in a 90 circumferential array. The proximal slide 332 includes a proximal i-shaped slide 3321 and a proximal plate slide 3322.
The positioning assembly 4 includes a distal positioning structure 41 and a proximal positioning structure 42. The distal positioning structure 41 includes a distal positioning pin 411, a distal i-shaped sliding slot 412 and a distal plate-type sliding slot 412. The distal positioning structures 41 are in 4 sets arranged circumferentially at 90 °. The proximal positioning structure 42 includes a proximal positioning nail 421, a proximal i-shaped sliding groove 412 and a proximal plate-type sliding groove 422. The proximal positioning structures 42 are 4 sets arranged circumferentially at 90. The distal positioning structure 41 is slidably connected to the distal slide assembly 32; the proximal positioning structure 42 is slidably coupled to the proximal slide assembly 33.
Example 2
As shown in fig. 3 to 9, the following specific settings are performed for the present embodiment based on embodiment 1:
the threaded tube 11 is a tubular structure with round holes on the side walls of both ends, the outer ends are respectively provided with a far-end thread 111 and a near-end thread 112 for integrally fixing in the patient, and the inner opening is provided with an internal thread 113 matched with the near-end push rod 223.
The distal guide structure 12 is an arc-shaped plate-shaped structure; the far-end guide structure 12 is arranged in a round hole of the outer sleeve 1 far away from the pipe orifice end and is integrally connected with the outer sleeve 1.
The tightening structure is a hexagonal prism-shaped structure with a cylindrical through hole in the center, is arranged at the pipe orifice of the outer sleeve 1 and is integrally connected with the outer sleeve 1.
The stud 21 is a cylindrical structure with threads on the outer side, and one end of the stud is integrally connected with the inner wall of the bearing; the push rod 23 is a circular barrel-shaped structure, and the inner side of the push rod is integrally connected with the outer wall of the bearing.
The rod body 31 is a cylindrical structure, the distal sliding component 32 and the proximal sliding component 33 are respectively arranged at two ends of the rod body 31, and the rod body 31 is integrally connected with the distal sliding component 32 and the proximal sliding component 33.
The distal end bevel 321 is a bevel structure, is arranged at the pipe orifice end of the rod body 31 far away from the outer sleeve 1, and is integrally connected with the rod body 31; distal ramp 322 is disposed on the slope of distal ramp 322 and is integrally connected to distal ramp 322.
The far-end I-shaped slideway 3221 is of a T-shaped structure, is arranged on the central axis of the far-end inclined surface 321, and is integrally connected with the far-end inclined surface 321; the distal plate-type slideway 3222 is a convex structure, and is disposed on two sides of the distal inclined surface 321, and integrally connected to the distal inclined surface 321.
The near-end inclined plane 331 is an inclined plane structure, is arranged at the tube opening end of the rod body 31 close to the outer sleeve 1, and is integrally connected with the rod body 31; the proximal ramp 332 is disposed on the slope of the proximal ramp 332 and is integrally connected to the proximal ramp 332.
The near-end I-shaped slideway 3321 is of a T-shaped structure, is arranged on the central axis of the near-end inclined surface 331 and is integrally connected with the near-end inclined surface 331; the near-end plate type slide ways 3322 are in a convex structure, are respectively arranged on two sides of the near-end inclined plane 331, and are integrally connected with the near-end inclined plane 331.
The distal positioning structure 41 is slidably connected to the distal slide assembly 32; the proximal positioning structure 42 is slidably coupled to the proximal slide assembly 33.
The distal positioning nail 411 is a cylindrical structure with two inclined surfaces at two ends, and the bottom of the distal positioning nail is integrally connected with the distal I-shaped sliding groove 412 and the distal plate-type sliding groove 412; the far-end I-shaped sliding groove 412 is a T-shaped groove, is arranged on the central axis of the bottom inclined plane of the far-end positioning nail 411 and is spliced with the far-end I-shaped sliding way 3221; the distal plate-type sliding groove 412 is a concave groove, and is respectively disposed on two sides of the bottom inclined plane of the distal positioning pin 411, and is inserted into the distal plate-type sliding groove 3222.
The proximal positioning nail 421 is a cylindrical structure with two inclined surfaces at two ends, and the bottom of the proximal positioning nail is integrally connected with the proximal I-shaped chute 412 and the proximal plate-type chute 422; the near-end i-shaped sliding groove 412 is a T-shaped groove, is arranged on the central axis of the bottom inclined plane of the near-end positioning nail 421, and is inserted into the near-end i-shaped sliding way 3321; the near-end plate type sliding groove 422 is a concave groove, is respectively arranged on two sides of the bottom inclined plane of the near-end positioning nail 421, and is inserted into the near-end plate type sliding rail 3322.
Example 3
As shown in fig. 10 to 13, the present embodiment is different from embodiment 2 in that:
the two sides of the threaded tube 11 are respectively provided with a circular hole, and the inner sides of the circular holes are respectively provided with an inclined surface for assisting the distal positioning structure 41 and the proximal positioning structure 42 to enter and exit.
The rod body 31 is a rectangular columnar structure; the distal slide 322 includes a distal i-slide 3221; the proximal slide 332 includes a proximal i-shaped slide 3321.
The far-end I-shaped slideway 3221 is of a T-shaped structure, is arranged on a central axis of the far-end inclined surface 321, and is integrally connected with the far-end inclined surface 321; the near-end I-shaped slideway 3321 is of a T-shaped structure, is arranged on the central axis of the near-end inclined plane 331 and is integrally connected with the near-end inclined plane 331
The distal positioning nail 411 is a cylindrical structure with two inclined surfaces at two ends, and the bottom of the distal positioning nail is integrally connected with the distal I-shaped chute 412; the distal end i-shaped sliding groove 412 is a T-shaped groove, is arranged on the central axis of the bottom inclined plane of the distal end positioning nail 411, and is inserted into the distal end i-shaped sliding rail 3221.
The proximal positioning structures 42 are 4 sets arranged circumferentially at 90. The proximal positioning nail 421 is a cylindrical structure with two inclined surfaces at two ends, and the bottom of the proximal positioning nail is integrally connected with the proximal I-shaped chute 412; the proximal i-shaped sliding groove 412 is a T-shaped groove, is disposed on the central axis of the bottom inclined surface of the proximal positioning nail 421, and is inserted into the proximal i-shaped sliding channel 3321.
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 (10)
1. An anti-rotation orthopedic internal fixture comprises an outer sleeve, a positioning assembly, an operation assembly for controlling the movement of the positioning assembly and a return spring; the operating assembly comprises a near-end push rod and a far-end sliding rod; the near-end push rod is arranged inside the outer sleeve and is in sliding connection with the outer sleeve; the far-end sliding rod is arranged in the outer sleeve and positioned on the inner side of the near-end push rod, and the far-end sliding rod is connected with the outer sleeve in a sliding manner; the positioning assemblies are respectively arranged at two ends of the far-end sliding rod and are detachably connected with the far-end sliding rod; one end of the reset spring is integrally connected with the pipe orifice end of the far-end sliding rod, which is far away from the threaded pipe, and the other end of the reset spring is integrally connected with the bottom of the inner side of the threaded pipe.
2. The anti-rotation orthopaedic internal fixture of claim 2, wherein the outer sleeve comprises a threaded tube, a distal guide structure and a tightening structure; the far-end guide structure is arranged in the far part of the outer sleeve and is integrally connected with the outer sleeve; the tightening structure is arranged at the pipe orifice of the outer sleeve and is integrally connected with the outer sleeve.
3. The anti-rotation orthopedic internal fixture of claim 3, wherein the proximal pusher comprises a stud, a rotation assembly and a pusher; the stud is integrally connected with the inner side of the rotating component; the push rod is integrally connected with the outer side of the bearing.
4. An anti-rotation orthopaedic internal fixture according to any one of claims 1 to 3, wherein the distal slide bar comprises a bar body, a distal slide assembly and a proximal slide assembly.
5. The anti-rotation orthopedic internal fixation object according to claim 4, wherein the distal sliding assembly and the proximal sliding assembly are respectively disposed at two ends of the rod body, and the rod body is integrally connected with the distal sliding assembly and the proximal sliding assembly.
6. An anti-rotation orthopaedic internal fixture according to claim 5, wherein said distal sliding assembly comprises a distal ramp and a distal ramp; the far-end slideway is integrally connected with the far-end inclined plane.
7. An anti-rotation orthopaedic internal fixture according to claim 5, wherein said proximal sliding assembly comprises a proximal ramp and a proximal ramp; the near-end slideway is integrally connected with the near-end inclined plane.
8. An anti-rotation orthopaedic internal fixture according to any one of claims 5 to 7, wherein the positioning assembly comprises a distal positioning formation and a proximal positioning formation; the far-end positioning structure is connected with the far-end sliding assembly in a sliding manner; the near-end positioning structure is connected with the near-end sliding assembly in a sliding mode.
9. The anti-rotation orthopedic internal fixture according to claim 8, wherein the distal positioning structure comprises a distal positioning nail, a distal i-shaped chute; the far-end I-shaped sliding groove is arranged at the bottom of the far-end positioning nail.
10. The anti-rotation orthopedic internal fixation object of claim 9, wherein the proximal positioning structure comprises a proximal positioning nail, a proximal i-shaped chute; the near-end I-shaped sliding groove is arranged at the bottom of the near-end positioning nail.
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|---|---|---|---|
| CN202110771888.9A CN113397676B (en) | 2021-07-08 | 2021-07-08 | Anti-rotation orthopedic internal fixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110771888.9A CN113397676B (en) | 2021-07-08 | 2021-07-08 | Anti-rotation orthopedic internal fixture |
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| CN113397676A true CN113397676A (en) | 2021-09-17 |
| CN113397676B CN113397676B (en) | 2022-05-13 |
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| CN106821480A (en) * | 2017-03-04 | 2017-06-13 | 丁大发 | Femur pressure self-locked intramedullary needle |
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| CN2065890U (en) * | 1989-12-31 | 1990-11-21 | 中国人民解放军北京军区总医院 | Combined rotary-proof needle in marrow |
| CN1125556A (en) * | 1994-12-28 | 1996-07-03 | 李建民 | Combined self-locking anti-rotary intramedullary pin |
| EP1582160A1 (en) * | 2004-03-31 | 2005-10-05 | Orthofix International B.V. | Intramedullary nail comprising elements of shape-memory material |
| US7727240B1 (en) * | 2006-02-15 | 2010-06-01 | Blake Benton | Method and system for securing an intramedullary nail |
| CN1817316A (en) * | 2006-03-21 | 2006-08-16 | 莫里斯 | Minimal access sliding screw |
| CN201015599Y (en) * | 2007-02-01 | 2008-02-06 | 龙兴丽 | Simple self-locking intramedullary nail |
| EP3102130A1 (en) * | 2014-02-06 | 2016-12-14 | Ignite-concepts GmbH | Bone screw assembly |
| CN105877832A (en) * | 2014-12-27 | 2016-08-24 | 王建平 | Femoral neck fixing mechanism and femoral neck fracture fixing structure thereof |
| CN106821480A (en) * | 2017-03-04 | 2017-06-13 | 丁大发 | Femur pressure self-locked intramedullary needle |
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