CN112823757A - Stable intramedullary fixing device for femoral neck fracture angle - Google Patents
Stable intramedullary fixing device for femoral neck fracture angle Download PDFInfo
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- CN112823757A CN112823757A CN201911139077.6A CN201911139077A CN112823757A CN 112823757 A CN112823757 A CN 112823757A CN 201911139077 A CN201911139077 A CN 201911139077A CN 112823757 A CN112823757 A CN 112823757A
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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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
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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
- A61B17/84—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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Neurology (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a stable intramedullary fixing device for a femoral neck fracture angle, which is structurally characterized in that one end of a sighting device A is connected with a sighting device B through a first fixing knob, and the other end of the sighting device A is connected with a main nail through threads; the two side surfaces of the sighting device B are respectively provided with a dovetail groove, the two side surfaces of the sighting device B are connected with sighting device accessories through the dovetail grooves, the top surface of the sighting device B is provided with a tension lock nail and a far-end lock nail sleeve guide hole, a sleeve is inserted into the pull lock nail and the far-end lock nail, the sighting device accessories are composed of two symmetrical parts, the top surface of the sighting device B is provided with a tension nail sleeve guide hole which is communicated up and down for driving a main nail external tension nail, the best position of the main nail external tension nail is selected through up and down sliding of the dovetail grooves, after femoral neck fracture is reset and the main nail is inserted, the main nail external tension nail is firstly driven to be pressurized, then two pieces of tension lock nails and one piece of far-end lock nail are driven, three hollow nails of the femoral neck are dispersedly.
Description
Technical Field
The invention belongs to the technical field of medical equipment, and particularly relates to a femoral neck angle stable type fixing tension lock nail.
Background
With the aging of society, the incidence of osteoporosis and femoral neck fractures caused by osteoporosis gradually increases, and once the femoral neck fractures, because most of a femoral head blood supply system is damaged, the mechanical length for fixation is short, the relative shearing force is large, the fixation is difficult to be effective, and nonunion and femoral head necrosis are easy to occur. At present, the most used internal fixation devices for clinically treating femoral neck fracture are three hollow threaded nails, proximal femoral locking steel plates, main nails and the like. The three hollow threaded nails have the advantages that the nail body is thinner, the damaged blood supply is less, the occupied squat growing space is less, the damage to the thighbone is less, the broken end pressurization can be well implemented, and the healing is facilitated; however, the nail body is fixed with the femoral neck through the greater tuberosity, the greater tuberosity is mostly spongy bone, the femoral neck is mainly provided with loose bone, the holding force of the loose bone is poor, the nail body is easy to shift in the area of the loose bone, once the nail body is loosened and shifted, the broken end grows slowly, and even bone nonunion or femoral head necrosis is caused.
The main nail is generally applied more when the femoral shaft and the femoral neck are fractured simultaneously, and the main nail is rarely used for pure femoral neck fracture because the femoral neck tension locking nail has no pressurizing function, and the locking steel plate at the proximal end of the femoral neck belongs to an extramedullary fixing system, has longer force arm, can not be withdrawn, has no subsequent pressurizing function and is easy to fatigue.
Disclosure of Invention
The invention aims to solve the problems and provides a stable intramedullary fixation device for a femoral neck fracture angle, which comprises a sighting device A, a first fixing knob, a sighting device B, a sighting device accessory, a sleeve, a far-end locking nail, a femoral shaft, a main nail, a tension locking nail, a tension nail, a femoral head and a femoral neck, wherein one end of the sighting device A is fixedly connected with the sighting device B through the first fixing knob, and the other end of the sighting device A is connected with the main nail through a thread; dovetail grooves are respectively arranged on two side surfaces of the sighting device B, a first connecting hole, a pull lock nail sleeve guide hole and a far-end lock nail sleeve guide hole which are vertically communicated are respectively arranged in front of and behind the top surface of the sighting device B, wherein the pull lock nail sleeve guide hole is obliquely arranged and is on the same axis with the main nail guide hole arranged on the main nail; the sighting device accessory consists of two symmetrical parts, and the top surfaces of the two symmetrical sighting device accessories are respectively provided with a pull nail sleeve guide hole which is through up and down; the tension nail sleeve is arranged in the tension nail sleeve guide hole, the tension nail is tightly attached to the outer wall of the main nail through the tension nail sleeve, and the tension nail is driven into the femoral head through the femoral neck to pressurize the fracture end; the tension lock nail sleeve is arranged in the guide hole of the tension lock nail sleeve, the tension lock nail is driven into the femoral head through the femoral neck by the tension lock nail sleeve, and the femoral neck and the main nail are locked and pressurized; the far-end locking nail sleeve is arranged in a far-end locking nail sleeve guide hole, a far-end locking nail is driven into a femoral stem through the far-end locking nail sleeve and is locked with a main nail, longitudinal guide rails are respectively arranged on the inner side surfaces of the two symmetrical sighting device accessories and are matched with the guide rails through dovetail grooves, so that the sighting device accessories are connected to a sighting device B and can move up and down, and after the optimal position is determined, the sighting device accessories are fixedly connected with the sighting device B through second connecting holes formed in the end surfaces of the two sides of the sighting device accessories by using a second fixing knob; the middle section of the outer diameter of the tension lock nail is smaller than the upper end and the lower end, so that the top thread is relatively deep, the pressurization of the fracture end is facilitated, the outer diameter of the tail part is large, the tension lock nail is locked with the main nail, the pressurization can be realized, the angle can be kept to be stably fixed, and the nail can be withdrawn.
Furthermore, the tension nail is fixed by a thick tension nail with the diameter of 7.3mm vertical to the fracture line direction and is arranged on the outer wall of the main nail without being limited by the diameter of a lock hole of the main nail, so that the fixed angle of the tension nail is 135-110 degrees.
Furthermore, two tension nail sleeve guide holes are formed in the sight accessory, the positions of the two tension nail sleeve guide holes are arranged in the front and back directions, only one of the two tension nail sleeve guide holes is selected when the sight accessory is used, the front side guide hole is selected when the main nail position deviates from the back, and the rear side guide hole is selected when the main nail position deviates from the front.
The invention has the beneficial effects that: it is rational in infrastructure, mechanical properties is good, both can implement disconnected end pressurization, can realize the stability after the femoral neck is fixed again, the nail is advanced on the macrostoma summit, keep away from the fracture line, do not disturb fracture end blood supply, can resist the shear force that causes when early function is taken exercise completely, for extramedullary locking system fulcrum internal shift, the length of the shear force arm of force that has significantly reduced prevents fatigue, still remain the nail effect of moving back when necessary simultaneously, horizontal pulling force nail tension band pulling force is fixed, the anti rotational stability of reinforcing.
Drawings
Fig. 1 is a plan view schematically illustrating the overall structure of the present invention.
Fig. 2 is a perspective view of the overall structure of the present invention.
Fig. 3 is a schematic front view of the present invention.
Fig. 4 is a schematic perspective view of a sight B according to the present invention.
Fig. 5 is a partially enlarged schematic view of a sight B of the present invention.
Fig. 6 is a schematic front view of the fastening position of the tension nail and the tension lock nail according to the present invention.
Fig. 7 is a perspective view of a sight attachment of the present invention.
In the figure: 1. aiming device A2, fixing knob I3, aiming device B301, dovetail groove 302, first connecting hole 303, pull locking nail sleeve guiding hole 304, far-end locking nail sleeve guiding hole 4, aiming device accessory 401, pull nail sleeve guiding hole 402, fixing knob II 403, second connecting hole 402, connecting hole 404, guide rail 5, sleeve 6, far-end locking nail 7, femoral shaft 8, main nail 801, main nail guiding hole 9, pull locking nail 10, pull nail 11, femoral head 12 and femoral neck.
Detailed Description
For the understanding of those skilled in the art, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
1-7, the intramedullary fixation device comprises an aimer A1, a first fixing knob 2, an aimer B3, an aimer accessory 4, a sleeve 5, a distal locking nail 6, a femoral shaft 7, a main nail 8, a tension locking nail 9, a tension nail 10 and a femoral head 11, wherein the femoral neck 12 is provided with a first fixing knob; one end of the sighting device A1 is fixedly connected with the sighting device B3 through a first fixing knob 2, and the other end of the sighting device A1 is connected with the main nail 8 through threads; dovetail grooves 301 are respectively arranged on two side surfaces of the sighting device B3, a first connecting hole 302, a pull lock nail sleeve guide hole 303 and a far-end lock nail sleeve guide hole 304 which are vertically communicated are respectively arranged in front and at the back of the top surface, wherein the pull lock nail sleeve guide hole 303 is obliquely arranged and is on the same axis with a main nail guide hole 801 arranged on the main nail 8; the sighting device accessory 4 consists of two symmetrical parts, and the top surfaces of the two symmetrical sighting device accessories 4 are respectively provided with a pull nail sleeve guide hole 401 which is through up and down; the pull nail sleeve 5 is arranged in the pull nail sleeve guide hole 401, the pull nail 10 is tightly attached to the outer wall of the main nail 8 through the pull nail sleeve 5, and is driven into the femoral head 11 through the femoral neck 12 to pressurize the fracture end; the pull lock nail sleeve 5 is arranged in the pull lock nail sleeve guide hole 303, the pull lock nail 9 is driven into the femoral head 11 through the femoral neck 12 by the pull lock nail sleeve 5, and the femoral neck 12 and the main nail 8 are locked and pressurized; the distal locking nail sleeve 5 is arranged in the distal locking nail sleeve guide hole 304, and the distal locking nail 6 is driven into the femoral shaft 7 through the distal locking nail sleeve 5 and is locked with the main nail 8; longitudinal guide rails 404 are respectively arranged on the inner side surfaces of the two symmetrical sighting device accessories 4, the sighting device accessories 4 are connected to the sighting device B3 through dovetail grooves 301 and matched with the guide rails 404 and can move up and down, and after the optimal position is determined, the sighting device accessories are fixedly connected with the sighting device B3 through second connecting holes 403 formed in the end surfaces of the two sides of the sighting device accessories by using second fixing knobs 402; the middle section of the outer diameter of the tension lock nail 9 is smaller than the upper end and the lower end, so that the top thread is relatively deep, the pressurization of the fracture end is facilitated, the outer diameter of the tail part is large, the tail part is locked with the main nail 8, the pressurization and the angle stable fixation can be realized, and the nail withdrawing can also be realized.
In a preferred embodiment, the tension nail 10 is fixed by a thick tension nail with the diameter of 7.3mm vertical to the fracture line direction and is arranged on the outer wall of the main nail without being limited by the diameter of a lock hole of the main nail 8, so that the fixed angle of the tension nail is 135-110 degrees.
In a preferred embodiment, the aimer attachment 4 is provided with two tension nail sleeve guide holes 401, the positions of the two tension nail sleeve guide holes are arranged in the front-back direction, only one of the two tension nail sleeve guide holes is selected when the aimer attachment is used, the front side guide hole is selected when the main nail position deviates from the back, and the rear side guide hole is selected when the main nail position deviates from the front, so that the aimer attachment is flexibly applied according to actual conditions in the operation.
When the device is used in an operation, firstly, a fracture is reset under perspective, then a sighting device A1, a sighting device B3 and a sighting device accessory 4 are connected through a first fixing knob 2 and a second fixing knob 402, a main nail 8 is driven into a femoral shaft 7 through the vertex of a greater tuberosity, then a tension nail 10 is driven into a sleeve 5, if the main nail 8 deviates, the tension nail 10 enters through a sleeve guide hole 401 of the tension nail sleeve on the front side, if the main nail 8 deviates, the tension nail 10 enters through a sleeve guide hole 401 of the tension nail sleeve on the rear side, the tension nail 10 is screwed to fully pressurize a fracture gap, then two tension lock nails 9 are driven into the fracture gap through a sleeve 5 of the tension lock nail, then a far-end lock nail 6 is driven into the far-end sleeve 5, then the tension nail, the tension lock nail and the sleeve on the far-end lock nail are respectively taken out from the tail, and the sighting device A and the sighting device B are simultaneously taken out, so that the.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby; all simple equivalent changes and modifications made according to the claims and the content of the creation specification of the present invention should still fall within the scope covered by the present patent.
Claims (3)
1. A stable intramedullary fixing device for a femoral neck fracture angle comprises a sighting device A (1), a fixing knob I (2), a sighting device B (3), a sighting device accessory (4), a sleeve (5), a far-end locking nail (6), a femoral shaft (7), a main nail (8), a tension locking nail (9), a tension nail (10), a femoral head (11) and a femoral neck (12), wherein one end of the sighting device A (1) is fixedly connected with the sighting device B (3) through the fixing knob I (2), and the other end of the sighting device A (1) is connected with the main nail (8) through threads; two side surfaces of the sighting device B (3) are respectively provided with a dovetail groove (301), the front and the back of the top surface are respectively provided with a first connecting hole (302), a pull lock nail sleeve guide hole (303) and a far-end lock nail sleeve guide hole (304) which are communicated up and down, wherein the pull lock nail sleeve guide hole (303) is obliquely arranged and is on the same axis with a main nail guide hole (801) arranged on the main nail (8); the sighting device accessory (4) consists of two symmetrical parts, and the top surfaces of the two symmetrical sighting device accessories (4) are respectively provided with a pull nail sleeve guide hole (401) which is through up and down; the tension nail sleeve (5) is arranged in the tension nail sleeve guide hole (401), the tension nail (10) is tightly attached to the outer wall of the main nail (8) through the tension nail sleeve (5), and the tension nail sleeve is driven into the femoral head (11) through the femoral neck (12) to pressurize the fracture end; the pull lock nail sleeve (5) is arranged in the pull lock nail sleeve guide hole (303), the pull lock nail (9) is driven into the femoral head (11) through the femoral neck (12) by the pull lock nail sleeve (5), and the femoral neck (12) and the main nail (8) are locked and pressurized; the distal end lock pin sleeve (5) is arranged in the distal end lock pin sleeve guide hole (304), and a distal end lock pin (6) is driven into the femoral shaft (7) through the distal end lock pin sleeve (5) and is locked with the main pin (8), and the locking device is characterized in that: longitudinal guide rails (404) are respectively arranged on the inner side surfaces of the two symmetrical sighting device accessories (4), the sighting device accessories (4) are connected to the sighting device B (3) through the dovetail grooves (301) and matched with the guide rails (404) and can move up and down, and after the optimal position is determined, the sighting device B (3) is fixedly connected with the second connecting holes (403) formed in the end surfaces of the two sides of the sighting device accessories through second fixing knobs (402); the middle section of the outer diameter of the tension lock nail (9) is smaller than the upper end and the lower end, so that the top thread is relatively deep, the pressurization of the fracture end is facilitated, the outer diameter of the tail part is large, the tension lock nail is locked with the main nail (8), the pressurization can be realized, the angle can be stably fixed, and the nail can be withdrawn.
2. The femoral neck fracture angle-stabilized intramedullary fixation device of claim 1, wherein: the tension nail (10) is fixed by a thick tension nail with the diameter of 7.3mm vertical to the fracture line direction and is arranged on the outer wall of the main nail without being limited by the diameter of a lock hole of the main nail (8), so that the fixed angle of the tension nail is 135-110 degrees.
3. The femoral neck fracture angle-stabilized intramedullary fixation device of claim 1, wherein: the sighting device accessory (4) is provided with two tension nail sleeve guide holes (401) which are arranged front and back, only one of the two guide holes is selected when the sighting device accessory is used, the front side guide hole is selected when the main nail position deviates back, and the rear side guide hole is selected when the main nail position deviates front.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911139077.6A CN112823757A (en) | 2019-11-20 | 2019-11-20 | Stable intramedullary fixing device for femoral neck fracture angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911139077.6A CN112823757A (en) | 2019-11-20 | 2019-11-20 | Stable intramedullary fixing device for femoral neck fracture angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112823757A true CN112823757A (en) | 2021-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911139077.6A Withdrawn CN112823757A (en) | 2019-11-20 | 2019-11-20 | Stable intramedullary fixing device for femoral neck fracture angle |
Country Status (1)
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| CN (1) | CN112823757A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113331931A (en) * | 2021-05-25 | 2021-09-03 | 长沙年轮骨科医院有限公司 | Fracture intramedullary fixation device and method |
-
2019
- 2019-11-20 CN CN201911139077.6A patent/CN112823757A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113331931A (en) * | 2021-05-25 | 2021-09-03 | 长沙年轮骨科医院有限公司 | Fracture intramedullary fixation device and method |
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Application publication date: 20210521 |
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| WW01 | Invention patent application withdrawn after publication |