CN112137708A - Femoral neck fracture reduction pressurizer - Google Patents
Femoral neck fracture reduction pressurizer Download PDFInfo
- Publication number
- CN112137708A CN112137708A CN202011209806.3A CN202011209806A CN112137708A CN 112137708 A CN112137708 A CN 112137708A CN 202011209806 A CN202011209806 A CN 202011209806A CN 112137708 A CN112137708 A CN 112137708A
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- China
- Prior art keywords
- femoral neck
- screw tap
- thread
- neck fracture
- resets
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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
- A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
- A61B17/746—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck the longitudinal elements coupled to a plate opposite the femoral head
-
- 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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8004—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
- A61B17/8014—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones the extension or compression force being caused by interaction of the plate hole and the screws
-
- 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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8004—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
- A61B17/8019—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones where the means are a separate tool rather than being part of the plate
-
- 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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
- A61B17/8057—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread
-
- 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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
-
- 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
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
-
- 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
- A61B17/864—Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated
-
- 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
- A61B17/8685—Pins or screws or threaded wires; nuts therefor comprising multiple separate parts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8897—Guide wires or guide pins
Abstract
The utility model relates to a femoral neck fracture pressurizer that resets relates to medical instrument's technical field, and it is established including screw tap and the cover that resets pressurization sleeve and compression nut on the screw tap that resets, the head of screw tap that resets is provided with self-tapping, the processing of being close to tail end department of screw tap that resets has the direction external screw thread, pressurization sleeve cover is established between the self-tapping of screw tap that resets and the direction external screw thread, the compression nut spiral shell with direction external screw thread screw-thread fit, the telescopic terminal surface that pressurizes with compression nut's terminal surface butt. This application can accelerate femoral neck fracture reduction surgery postoperative patient's healing time, reduces the probability of complication.
Description
Technical Field
The application relates to the field of medical instruments, in particular to a femoral neck fracture reduction pressurizer.
Background
In the field of surgical medicine, the current methods for reducing femoral neck fractures are as follows: traction reduction, closure technique reduction (MC Evenny method and Lead bet method), percutaneous needle puncture and pry reduction. The methods are indirect reduction, and after reduction, the fracture part is firmly fixed by using the locking plate, and the fracture end can not be accurately reduced and pressurized, so that the healing time of a postoperative patient is long, the fracture is not healed, and the incidence of complications such as femoral head necrosis is high.
Disclosure of Invention
In order to accelerate the healing time of a patient after the reduction surgery of the femoral neck fracture and reduce the probability of complications, the application provides a reduction pressurizer of the femoral neck fracture.
The application provides a femoral neck fracture pressurizer that resets adopts following technical scheme:
the utility model provides a femoral neck fracture pressurizer that resets, overlaps including the screw tap that resets and establish pressurization sleeve and compression nut on the screw tap that resets, the head of screw tap that resets is provided with self-tapping screw thread, the processing that is close to tail end department of screw tap that resets has the direction external screw thread, the pressurization sleeve cover is established between the self-tapping screw thread and the direction external screw thread of screw tap that resets, the pressurization nut screw with direction external screw thread screw-thread fit, the telescopic terminal surface that pressurizes with compression nut's terminal surface butt.
By adopting the technical scheme, during operation, a hole is drilled from the tuberosity to the fractured femoral neck, then the locking plate is placed at the tuberosity of the femur, the head of the reset screw tap penetrates through the locking plate and the drilled hole and is screwed into the femoral head through the self-tapping thread, the rotary pressing nut moves towards the head close to the reset screw tap, the end face of the pressing sleeve is enabled to abut against the locking plate, the reset screw tap moves reversely relative to the pressing nut under the limitation of the locking plate to press the fractured femoral neck, the healing time is shortened, and the probability of complications is reduced.
Optionally, the inside of the reset screw tap is provided with a guide through hole extending axially.
Through adopting above-mentioned technical scheme, the direction through-hole can cooperate with ke shi needle, and in the operation, insert ke shi needle between femoral head and thighbone tuberosity earlier, when penetrating the screw tap that resets, ke shi needle can insert the direction through-hole, leads to the screw tap that resets.
Optionally, a mounting hole is formed in the side face of the pressurizing sleeve, the mounting hole axially extends to two ends of the pressurizing sleeve, a flat position is machined between the self-tapping thread and the guiding external thread of the reset screw tap, and the flat position is installed into the pressurizing sleeve through the mounting hole.
By adopting the technical scheme, the installation of the pressurizing sleeve can be facilitated.
Optionally, the joint has the locating part in the installing port, the locating part sets up to the U-shaped, and its both ends are provided with the joint portion with the inboard edge joint of installing port respectively.
Through adopting above-mentioned technical scheme, the locating part can prevent that the pressurization sleeve from breaking away from flat position, and convenient in the installation and from dismantling, the joint portion of locating part and the inboard edge joint of installing port to be difficult to drop.
Optionally, one end of the pressurizing sleeve, which is close to the self-tapping thread, is provided with a conical surface.
Through adopting above-mentioned technical scheme, the conical surface can partially wear to establish in the through-hole of lockplate, with the through-hole butt, improve and the lockplate between the stability of being connected.
Optionally, the length of the reset screw tap between the self-tapping thread and the guide external thread is greater than that of the guide sleeve, and the pressurizing nut is an elongated nut.
Through adopting above-mentioned technical scheme, can provide activity space for the pressurization sleeve, and the extension nut has longer guide distance, can adapt to the different fracture positions of femoral neck, realizes the pressurization of different distances between screw tap head and the lockplate that resets.
Optionally, the circumferential surface of the head of the reset screw tap is provided with a plurality of cutting grooves, the plurality of cutting grooves axially extend and cut off the self-tapping threads, and cutting side edges are formed at the edges of the cutting grooves; the head of the reset screw tap is provided with a plurality of cutting tips on the edge of the guide through hole.
By adopting the technical scheme, the cutting side edge and the cutting tip are beneficial to cutting the femoral head, and the mounting efficiency of the reset screw tap is improved.
Optionally, the tail end of the reset screw tap is provided with a rotation stopping groove on the circumferential surface.
By adopting the technical scheme, the rotation stopping groove at the tail end of the reset screw tap is used for being matched with tools such as a socket wrench and the like, so that the reset screw tap is convenient to screw.
Optionally, the outer surface of the compression nut is provided with knurled lines.
By adopting the technical scheme, the knurled lines can increase the friction force, and the compression nut is convenient to screw.
Optionally, the compression nut is provided in a prismatic configuration.
By adopting the technical scheme, the prismatic structure compression nut can be convenient to screw.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the reduction screw tap is matched with the locking plate for use, the compression nut is screwed after the reduction screw tap is installed, the reduction screw tap moves reversely relative to the compression nut under the limitation of the locking plate, and the fracture of the femoral neck is compressed, so that the healing time is shortened, and the probability of complications is reduced;
2. the guide through hole can be matched with the Kirschner wire to guide the reset screw tap;
3. the locating part can prevent that the pressurization sleeve from breaking away from flat position, and convenient in installation and follow the dismantlement, the joint portion of locating part and the inboard edge joint of installing port to be difficult to drop.
Drawings
FIG. 1 is a cross-sectional view of a femoral neck fracture reduction pressurizer in accordance with one embodiment;
FIG. 2 is a schematic view of a femoral neck fracture reduction pressurizer used with a K-wire and a locking plate according to one embodiment;
FIG. 3 is a schematic structural view of the head of a reduction tap of the femoral neck fracture reduction pressurizer in accordance with the embodiment;
FIG. 4 is a schematic view showing the installation of the compression sleeve and the flat position of the reduction screw tap of the femoral neck fracture reduction pressurizer in the first embodiment;
FIG. 5 is a schematic view showing a structure in which a compression nut of the femoral neck fracture reduction pressurizer according to the first embodiment is prismatic;
FIG. 6 is a schematic view of the tail end structure of the reduction tap and a matching wrench of the femoral neck fracture reduction pressurizer in accordance with the embodiment;
fig. 7 is a sectional view of the compression sleeve and the stopper of the femoral neck fracture reduction pressurizer in the second embodiment.
Description of reference numerals: 1. resetting the screw tap; 11. a guide through hole; 12. self-tapping threads; 13. a guide external thread; 14. cutting a groove; 141. cutting the side edge; 15. a cutting tip; 16. flattening; 17. a rotation stopping groove; 2. a pressurizing sleeve; 21. a conical surface; 22. an installation port; 3. a compression nut; 31. knurling lines; 4. a Kirschner wire; 5. a locking plate; 6. the femur; 61. a femoral neck; 62. a tuberosity; 63. the femoral head; 7. a limiting member; 71. a clamping part.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The embodiment of the application discloses a femoral neck fracture reduction pressurizer.
Example one
Referring to fig. 1, the femoral neck fracture reduction pressurizer comprises a reduction screw tap 1, wherein a compression sleeve 2 and a compression nut 3 are sleeved on the reduction screw tap 1. The screw tap 1 that resets is long shaft-like, its inside direction through-hole 11 of offering the axial extension, the head of screw tap 1 that resets is provided with self-tapping screw thread 12, it has direction external screw thread 13 to be close to tail end department processing, 2 covers of pressure sleeve are established between self-tapping screw thread 12 and direction external screw thread 13, pressure nut 3 and 13 screw-thread fits of direction external screw thread, 1 axial displacement of screw tap that resets can be followed to pressure nut 3 and pressure sleeve 2 homoenergetic, the terminal surface that both are close to each other can the butt each other.
Referring to fig. 2, the femoral neck fracture reduction pressurizer needs to be matched with a kirschner wire 4 and a locking plate 5, during operation, a drilling device is used for drilling a hole from a tuberosity 62 of a femur 6 to a fractured femoral neck 61, then the locking plate 5 is placed at the tuberosity 62, a through hole is formed in the locking plate 5, the head of a reduction screw tap 1 penetrates through the through hole of the locking plate 5 and the drilled hole in the femur 6 and is screwed into a femoral head 63 through a self-tapping thread 12, a rotary pressing nut 3 moves towards the head of the reduction screw tap 1, the end face of a pressing sleeve 2 is enabled to abut against the locking plate 5, and under the limitation of the locking plate 5, the reduction screw tap 1 moves reversely relative to the pressing nut 3 to press the fractured.
Referring to fig. 3, a plurality of cutting grooves 14 are uniformly distributed on the circumferential surface of the head of the reduction tap 1, the plurality of cutting grooves 14 axially extend to the end surface of the reduction tap 1 to cut the tapping thread 12, and cutting side edges 141 are formed at the edges of the cutting grooves 14. The cutting grooves 14 divide the edge of the guide through hole 11 at one end of the head of the reset tap 1 into a plurality of sections, and the edges of the guide through holes 11 of the plurality of sections are processed into a plurality of cutting tips 15. Both the cutting flank 141 and the cutting tip 15 facilitate cutting of the femur 6, facilitating use of the reduction tap 1. In the present embodiment, the number of the cutting flutes 14 may be 3, and the number of the cutting tips 15 may also be 3.
Referring to fig. 4, the length of the reset tap 1 between the self-tapping thread 12 and the external guide thread 13 is longer than the length of the pressurizing sleeve 2, along which the pressurizing sleeve 2 can slide axially. The pressurizing nut 3 is a lengthened nut with a certain length, and an internal thread matched with the guide external thread 13 is arranged at one end facing the tail of the reduction screw tap 1, so that the pressurizing nut can adapt to different fracture positions of the femoral neck 61, and the pressurizing of different distances between the head of the reduction screw tap 1 and the locking plate 5 is realized. In order to facilitate screwing, referring to fig. 2 and 5, a knurled pattern 31 may be formed on the outer surface of the pressure nut 3, or the pressure nut 3 may be formed in a prism structure.
Referring to fig. 2 and 4, the end of the pressure sleeve 2 close to the self-tapping thread 12 is provided with a tapered surface 21, and the tapered surface 21 can be partially inserted into the through hole of the locking plate 5 and abut against the through hole, thereby improving the stability of the pressure sleeve 2 after being inserted into the locking plate 5.
Referring to fig. 2, the side surface of the pressurizing sleeve 2 is opened with an installation opening 22, and the installation opening 22 axially extends to both ends of the pressurizing sleeve 2. The reset tap 1 is provided with a flat position 16 between the self-tapping thread 12 and the external guiding thread 13, the flat position 16 is close to the self-tapping thread 12 and is slightly longer than the pressurizing sleeve 2, and the flat position 16 can be installed in the pressurizing sleeve 2 through an installation opening 22. During assembly, the pressurizing sleeve 2 is arranged on the flat position 16 and then slides towards the tail end of the reset screw tap 1, so that the pressurizing sleeve 2 is partially or completely separated from the flat position 16, and the pressurizing sleeve 2 is prevented from falling off.
Referring to fig. 6, the circumferential surface of the tail of the reduction tap 1 is provided with a rotation stopping groove 17, which can be matched with a matched wrench or other tools, so that the head of the reduction tap 1 can be conveniently screwed into the femoral head 63.
The femoral neck fracture reduction pressurizer is matched with the Kirschner wire 4 and the locking plate 5 for use, and applies pressure to the fracture part of the femoral neck 61, so that the healing time is accelerated, and the probability of complications is reduced. After compression, the locking plate 5 may be secured with screws and the femoral head 63 attached, and then the femoral neck fracture reduction compressor removed.
Example two
Referring to fig. 7, the present embodiment is different from the embodiment in that a stopper 7 is provided in the mounting hole 22 of the pressing sleeve 2 to prevent the pressing sleeve 2 from being separated from the reset tap 1.
The limiting member 7 is configured as a U-shaped structure, and the distance between two opposite outer side walls of the limiting member 7 is slightly larger than the width of the mounting opening 22. During installation, the pressurizing sleeve 2 is rotated to enable the flat position 16 to face the installation hole 22, then the limiting piece 7 is opened to face the installation hole 22 and is installed, and two opposite sides of the limiting piece 7 are pressed against two inner walls of the installation hole 22 respectively. Both ends of locating part 7 are connected with joint portion 71 respectively an organic whole, and two joint portions 71 respectively with two inboard edge joint of installing port 22, can prevent that locating part 7 from droing. In addition, when the tapered surface 21 of the pressurizing sleeve 2 abuts against the through hole of the locking plate 5, both sides of the mounting opening 22 can press the stopper 7, thereby further preventing the stopper 7 from falling off.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a femoral neck fracture pressurizer that resets which characterized in that: establish including screw tap (1) and cover reset pressure sleeve (2) and pressure nut (3) on screw tap (1), the head of screw tap (1) that resets is provided with self tapping screw thread (12), the tail end department of being close to of screw tap (1) of resetting is processed there is direction external screw thread (13), pressure sleeve (2) cover is established between self tapping screw thread (12) and the direction external screw thread (13) of screw tap (1) that resets, pressure nut (3) spiral shell with direction external screw thread (13) screw-thread fit, the terminal surface of pressure sleeve (2) with the terminal surface butt of pressure nut (3).
2. A femoral neck fracture reduction pressurizer according to claim 1, wherein: the reset screw tap (1) is internally provided with a guide through hole (11) extending axially.
3. A femoral neck fracture reduction pressurizer according to claim 1, wherein: the side surface of the pressurizing sleeve (2) is provided with an installation opening (22), the installation opening (22) axially extends to two ends of the pressurizing sleeve (2), a flat position (16) is machined between the self-tapping thread (12) and the guiding external thread (13) of the reset screw tap (1), and the flat position (16) is installed into the pressurizing sleeve (2) through the installation opening (22).
4. A femoral neck fracture reduction pressurizer according to claim 3, wherein: the joint has locating part (7) in installing port (22), locating part (7) set up to the U-shaped, its both ends be provided with respectively with the joint portion (71) of the inboard marginal joint of installing port (22).
5. A femoral neck fracture reduction pressurizer according to claim 1, wherein: one end of the pressurizing sleeve (2) close to the self-tapping thread (12) is provided with a conical surface (21).
6. A femoral neck fracture reduction pressurizer according to claim 1, wherein: the length of the reset screw tap (1) between the self-tapping screw thread (12) and the guide external screw thread (13) is larger than that of the guide sleeve, and the pressurizing nut (3) adopts an elongated nut.
7. A femoral neck fracture reduction pressurizer according to claim 1, wherein: the peripheral surface of the head of the reset screw tap (1) is provided with a plurality of cutting grooves (14), the plurality of cutting grooves (14) axially extend and cut off the self-tapping thread (12), and cutting side edges (141) are formed at the edges of the cutting grooves (14); the head of the reset screw tap (1) is provided with a plurality of cutting tips (15) on the edge of the guide through hole (11).
8. A femoral neck fracture reduction pressurizer according to claim 1, wherein: the tail end of the reset screw tap (1) is provided with a rotation stopping groove (17) on the circumferential surface.
9. A femoral neck fracture reduction pressurizer according to claim 1, wherein: the outer surface of the compression nut (3) is provided with knurled lines (31).
10. A femoral neck fracture reduction pressurizer according to claim 1, wherein: the pressurizing nut (3) is arranged to be in a prism-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011209806.3A CN112137708A (en) | 2020-11-03 | 2020-11-03 | Femoral neck fracture reduction pressurizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011209806.3A CN112137708A (en) | 2020-11-03 | 2020-11-03 | Femoral neck fracture reduction pressurizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112137708A true CN112137708A (en) | 2020-12-29 |
Family
ID=73953842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011209806.3A Withdrawn CN112137708A (en) | 2020-11-03 | 2020-11-03 | Femoral neck fracture reduction pressurizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112137708A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113208745A (en) * | 2021-04-30 | 2021-08-06 | 北京长木谷医疗科技有限公司 | Thighbone locating rack |
-
2020
- 2020-11-03 CN CN202011209806.3A patent/CN112137708A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113208745A (en) * | 2021-04-30 | 2021-08-06 | 北京长木谷医疗科技有限公司 | Thighbone locating rack |
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Application publication date: 20201229 |