CN106073877A - A kind of near end of thighbone Medullary fixation device - Google Patents

A kind of near end of thighbone Medullary fixation device Download PDF

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Publication number
CN106073877A
CN106073877A CN201610552349.5A CN201610552349A CN106073877A CN 106073877 A CN106073877 A CN 106073877A CN 201610552349 A CN201610552349 A CN 201610552349A CN 106073877 A CN106073877 A CN 106073877A
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CN
China
Prior art keywords
described
end
near
pinning
hole
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CN201610552349.5A
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Chinese (zh)
Inventor
董明明
任晓光
杨志程
严武
郑洋
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闻泰医疗科技(上海)有限公司
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Priority to CN201610552349.5A priority Critical patent/CN106073877A/en
Publication of CN106073877A publication Critical patent/CN106073877A/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72Intramedullary pins, nails or other devices
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72Intramedullary pins, nails or other devices
    • A61B17/7233Intramedullary pins, nails or other devices with special means of locking the nail to the bone
    • A61B17/725Intramedullary pins, nails or other devices with special means of locking the nail to the bone with locking pins or screws of special form
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/74Devices for the head or neck or trochanter of the femur
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Threaded wires, pins or screws; Nuts therefor
    • A61B17/8625Shanks, i.e. parts contacting bone tissue
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Threaded wires, pins or screws; Nuts therefor
    • A61B17/8685Threaded wires, pins or screws; Nuts therefor comprising multiple separate parts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/88Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8802Equipment for handling bone cement or other fluid fillers
    • A61B17/8805Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/88Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8802Equipment for handling bone cement or other fluid fillers
    • A61B17/8805Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
    • A61B17/8811Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it characterised by the introducer tip, i.e. the part inserted into or onto the bone
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B2017/564Methods for bone or joint treatment
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Threaded wires, pins or screws; Nuts therefor
    • A61B2017/8655Threaded wires, pins or screws; Nuts therefor with special features for locking in the bone

Abstract

Present invention is disclosed a kind of near end of thighbone Medullary fixation device, including nail main in marrow, near-end pinning, os integumentale screw, compression pinning and tail cap, in marrow, main nail has near-end and carries cuspidated far-end, and proximal extension is to far-end, and angled setting;Near-end has the first through hole coordinated with near-end pinning, the first through-bore axis and the angled setting of near-end, and far-end has the second through hole coordinated with os integumentale screw;Main in marrow nailing on end and have screwed hole, screwed hole is provided with tail cap from top to bottom and compresses pinning, compresses pinning lower end and compresses near-end pinning, and tail cap is threadeded with screwed hole, and compression pinning;Near-end pinning front end is cutter head, and proximal lock nails on to be had and compresses the step surface that pinning lower end coordinates, and the first through hole has stress relief grooves, effectively prevents near-end pinning and the fracture of the first through hole junction.

Description

A kind of near end of thighbone Medullary fixation device

Technical field

The present invention relates to medical instruments field, particularly to a kind of near end of thighbone Medullary fixation device.

Background technology

Chinese patent (CN2011200614876) discloses a kind of near end of thighbone nail rod pinning system, discloses this system Being made up of main nail, near-end hollow self-taped type pinning, far-end self-taped type pinning and main nail tail cap, the most main nail is elongated tubular, main nail Top relatively thick, for coordinating with near-end hollow self-taped type pinning, the bottom of main nail is relatively thin, is used for joining with far-end self-taped type pinning Close.During use, after main nail bottom is vertically inserted in the pulp cavity on femur, respectively near-end hollow self-taped type pinning is screwed in main nail Top, far-end self-taped type pinning screws in main nail bottom, and screws in main nail tail cap in the upper end of main nail, thus reaches fracturing Femur implement fixing therapeutic effect.

Owing to the grasping force of near-end hollow self-taped type pinning is limited, the most anti-rotation poor performance, use possibility for a long time The phenomenon that near-end hollow self-taped type pinning can be occurred to exit, affects surgical effect.

In order to solve the problems referred to above, prior art occurs use the cutter head with screw blade to substitute near-end hollow self tapping Type pinning, makes the cutter head of this screw blade coordinate screw-in femoral trochanteric with main nail, prevents it from exiting or penetrate femur bulb.Example As:

A kind of proximal femoral internal fixer that Chinese patent (CN2010203019929) discloses, it discloses in main body Arranging a hole tilted on the main fixed part of PFN, the hole of this inclination is elliptical aperture.And on the hole that this is oblique Being equipped with the cutter head with screw blade, the knife bar of the screw blade afterbody on this cutter head is plugged in the main fixed part of main body slidably In the hole of this inclination.Cutter head is squeezed into sclerotin than more loose femoral trochanteric, circular knife roomy on the screw blade of cutter head Face rotates obliquely and extrudes loose sclerotin, is allowed to closely knit, and many spirals knife face structure of screw blade can significantly improve anti-rotation Performance and grasping force.

The hole of aforementioned inclination is bigger so that thinning between this hole and body outer wall, and breakage phenomenon easily occurs.Chinese patent (CN2011200614876) there is also this problem.

Summary of the invention

Present invention is primarily targeted at and provide a kind of simple in construction, in preventing the near end of thighbone marrow that near-end pinning exits Fixing device.

Another object of the present invention is to provide a kind of near end of thighbone Medullary fixation device, the should coordinated with near-end pinning One through hole has stress relief grooves, effectively prevents fracture.

For reaching object above, the invention provides a kind of near end of thighbone Medullary fixation device, comprising: main nail in marrow, Near-end pinning, os integumentale screw, compression pinning and tail cap, in described marrow, main nail has near-end and carries cuspidated far-end, described Proximal extension is to described far-end, and angled setting;

Described near-end has the first through hole coordinated with described near-end pinning, described first through-bore axis and described near-end in 50 °~65 ° settings, described far-end has the second through hole coordinated with described os integumentale screw;

In described marrow, the main end that nails on has screwed hole, described tail cap and described compression pinning and is arranged on described spiral shell from top to bottom In pit, described compression pinning lower end compresses described near-end pinning, and described tail cap is threadeded with described screwed hole, and compressed institute State compression pinning;

Described near-end pinning includes that cutter head and knife bar, described cutter head extend to described knife bar, and described knife bar is positioned at described In one through hole, and there is the step surface coordinated with described compression pinning lower end;

On described first through hole, there is stress relief grooves.

In one embodiment, described cutter head is the cutter head with screw blade, and described first through hole assumes diamond in shape, and in Pedicellus et Pericarpium Trapae Four angles of the first through hole described in shape are arc transition;

The quantity of described stress relief grooves is two, and is symmetrically arranged at the described first upper and lower both sides of through hole;

Each described stress relief grooves is all in wavy.

In one embodiment, described cutter head is tapping screw, and described first through hole is rounded;

The quantity of described stress relief grooves is two, and is symmetrically arranged at the described first upper and lower both sides of through hole;

Described stress relief grooves is curved.

In one embodiment, when described near-end pinning is by described first through hole, and after screwing in femoral trochanteric, described Near-end pinning end flushes with surface of bone.

In one embodiment, described step surface is arc-shaped, and described compression pinning lower end has at least one arc surface.

In one embodiment, described compression pinning lower end has two arc surfaces, and is symmetrical arranged.

In one embodiment, described compression pinning lower end is plugged on described step surface, and described compression pinning lower end sets It is equipped with a jack coordinated with described step surface.

In one embodiment, described cutter head front end is closed, and the outer wall of described cutter head is evenly arranged with multiple cement hole.

In one embodiment, also include that bone cement conveying pipe, described bone cement conveying pipe front end are closed, described bone cement It is provided with at least one orifice on conveying pipe outer wall;

Described bone cement conveying pipe front end can be inserted in described cutter head from described near-end pinning rear end.

In one embodiment, the quantity of orifice is one, and adjacent with bone cement conveying pipe front end.

In one embodiment, described second through hole is long pass.

According to preferred embodiment, the invention provides following advantage:

(1) step surface that the present invention is nailed on by proximal lock and compress pinning coordinate, effectively prevent near-end pinning from exiting or Person prevents near-end pinning from penetrating femur bulb.

(2) it is provided with multiple cement hole on the outer wall of the cutter head of the near-end pinning of the present invention, by managing with bone cement conveying With the use of, it is possible to inside uniform filling femur.

(3) it is provided with stress relief grooves on first through hole being used for coordinating with near-end pinning of the present invention, has resisted axially Load, bending force and torsion, prevent the fracture of its junction, extends the use time.

The present invention is further illustrated below in conjunction with drawings and Examples.

Accompanying drawing explanation

Fig. 1 is the structural representation of near end of thighbone Medullary fixation device first embodiment of the present invention;

Fig. 2 is the structural representation of near end of thighbone Medullary fixation device the second embodiment of the present invention;

Fig. 3 is the sectional view of Fig. 2;

Fig. 4 is the structural representation of main nail in marrow described in Fig. 1;

Fig. 5 is the structural representation of main nail in marrow described in Fig. 2;

Fig. 6 is near-end pinning of the present invention and compresses the structural representation that pinning coordinates;

Fig. 7 is the topology view of compression pinning first embodiment of the present invention;

Fig. 8 is the topology view of compression pinning the second embodiment of the present invention;

Fig. 9 is the topology view of compression pinning the 3rd embodiment of the present invention;

Figure 10 is the sectional view that compression pinning the 3rd embodiment of the present invention coordinates with near-end pinning;

Figure 11 is bone cement of the present invention conveying pipe.

Detailed description of the invention

Hereinafter describe and be used for disclosing the present invention so that those skilled in the art are capable of the present invention.Below describe in excellent Select embodiment to be only used as citing, it may occur to persons skilled in the art that other obvious modification.Define in the following description The ultimate principle of the present invention can apply to other embodiments, deformation program, improvement project, equivalent and the not back of the body Other technologies scheme from the spirit and scope of the present invention.

First embodiment

As shown in Fig. 1, Fig. 4, Fig. 3 and Fig. 6, described near end of thighbone Medullary fixation device, comprising: main nail 100 in marrow, near End pinning 200, os integumentale screw 300, compression pinning 500 and tail cap 400, in marrow, main nail 100 has near-end and band is cuspidated Far-end, proximal extension is to far-end, and angled setting;

Near-end has the first through hole 101 coordinated with near-end pinning 200, the first through hole 101 axis and near-end be 50 °~ 65 ° of settings, far-end has the second through hole 102 coordinated with os integumentale screw 300;

In marrow, main nail 100 upper end has screwed hole 103, and tail cap 400 is arranged on screwed hole from top to bottom with compressing pinning 500 In 103, compressing pinning 500 lower end and compress near-end pinning 101, tail cap 400 is threadeded with screwed hole 103, and compresses lock Nail 500;

Near-end pinning 200 includes cutter head 201 and knife bar 202, and cutter head 201 extends to knife bar 202, and knife bar 202 is positioned at first In through hole 101, and have and compress the step surface 204 that pinning 500 lower end coordinates;

On first through hole 101, there is stress relief grooves 104.

Specifically, cutter head 201 is the cutter head with screw blade, and the first through hole 101 assumes diamond in shape, and first through hole that assumes diamond in shape Four angles of 101 are arc transition;The quantity of stress relief grooves 104 is two, and is symmetrically arranged on the first through hole 101 Lower both sides;Each stress relief grooves 104 is all in wavy.The cross section of knife bar 202 is identical with the cross section of the first through hole 101.

It is provided by stress relief grooves, has resisted axial load, bending force and torsion, prevent near-end pinning and first from leading to There is fracture in junction, hole.

The structure of near-end pinning 200 can be the structure as combined pinning in Chinese patent (CN2009100318070), adopts Assemble with multiple parts.It can also be the integral structure in Fig. 1.The near-end pinning 200 using integral structure has Higher intensity, it is simple to operate and process.

When near-end pinning 200 is by the first through hole 101, and after screwing in femoral trochanteric, near-end pinning 200 end and surface of bone Flush.

As shown in Figure 6 and Figure 7, step surface 204 in arc-shaped, compress pinning 500 lower end have an arc surface 501 and its Coordinate.Realize compressing pinning 500 lower end and complete snap-fit, and more firm compression with step surface 204.

Coordinate with near-end pinning 200 by compressing pinning 500, effectively prevent near-end pinning 200 from moving back in the first through hole 101 Go out, and affect surgical effect.Specifically, the two ends of step surface 204 limit compression pinning 500 and skid off in step surface 204, prevent Near-end pinning 200 exits or penetrates femur bulb.

As shown in Figure 8, compress pinning 500 lower end and there are two arc surfaces 501, and be symmetrical arranged.Prevent when compressing pinning 500 when screwing in screwed hole 103, makes this arc surface 501 cannot be with step surface 204 snap-fit because of directionality problem.By arranging two Arc surface 501 avoids the appearance of the problems referred to above.

As shown in Figure 9 and Figure 10, compress pinning 500 and be plugged on step surface 204, compress pinning 500 lower end and be provided with one The individual jack 502 coordinated with step surface 204.

As it is shown in figure 1, be provided with multiple cement hole 202 on cutter head.In femoral head, bone cement is injected by cement hole, from Strengthen the strength and stability of near end of thighbone, it is simple to the recovery of near end of thighbone.

Specifically, cutter head front end is closed, and cement hole 202 is uniformly arranged on the outer wall of cutter head.Bone cement passes through multiple water Mud hole 202 is uniformly extruded, and diseased region pressurized can be made uniform, thus improve surgical effect.In prior art, cement hole 202 Being provided in the front end of cutter head, bone cement is injected forward, causes the uneven of both sides, can affect near end of thighbone to a certain extent Recovery.Also result near end of thighbone local pressure higher, and cause the adverse consequences such as pain in operation in patients.

As shown in figure 11, bone cement conveying pipe 600 front end is closed, and bone cement conveying pipe 600 outer wall is provided with a note Hole 601.Orifice 601 is adjacent with bone cement conveying pipe 600 front end.

During use, bone cement conveying pipe 600 front end proximally penetrates pinning 200 rear end, is positioned at inside cutter head.Work as femoral head When certain position of head needs to fill bone cement, only need to be relative with this position respectively with a cement hole 202 by orifice 601.

Correspondingly, bone cement conveying pipe 600 front end is closed, and bone cement conveying pipe 600 outer wall is evenly arranged with multiple note Hole 601.

Second embodiment

As shown in Fig. 2, Fig. 3 and Fig. 5, described near end of thighbone Medullary fixation device, comprising: main nail 100, proximal lock in marrow Nail 200, os integumentale screw 300, compression pinning 500 and tail cap 400, in marrow, main nail 100 has near-end and carries cuspidated far-end, Proximal extension is to far-end, and angled setting;

Near-end has the first through hole 101 coordinated with near-end pinning 200, the first through hole 101 axis and near-end be 50 °~ 65 ° of settings, far-end has the second through hole 102 coordinated with os integumentale screw 300;

In marrow, main nail 100 upper end has screwed hole 103, and tail cap 400 is arranged on screwed hole from top to bottom with compressing pinning 500 In 103, compressing pinning 500 lower end and compress near-end pinning 101, tail cap 400 is threadeded with screwed hole 103, and compresses lock Nail 500;

Near-end pinning 200 includes cutter head 201 and knife bar 202, and cutter head 201 extends to knife bar 202, and knife bar 202 is positioned at first In through hole 101, and have and compress the step surface 204 that pinning 500 lower end coordinates;

On first through hole 101, there is stress relief grooves 104.

Specifically, cutter head 201 is tapping screw, and the first through hole 101 is rounded;The quantity of stress relief grooves 104 is two, And it is symmetrically arranged at the first through hole about 101 both sides;Stress relief grooves 104 is curved.

Further, step surface 204 is in arc-shaped, and compression pinning 500 lower end has an arc surface 501 and coordinates with it.

As preferably, compress pinning 500 lower end and there are two arc surfaces 501, and be symmetrical arranged.

Further, compress pinning 500 and be plugged on step surface 204, compress pinning 500 lower end and be provided with one and step The jack 502 that face 204 coordinates.

Further, cutter head is provided with multiple cement hole 202.

Specifically, cutter head front end is closed, and cement hole 202 is uniformly arranged on the outer wall of cutter head.Bone cement passes through multiple water Mud hole 202 is uniformly extruded.

Bone cement conveying pipe 600 front end is closed, and bone cement conveying pipe 600 outer wall is provided with an orifice 601.Orifice 601 is adjacent with bone cement conveying pipe 600 front end.

As it is shown in figure 5, the second through hole 102 is in long pass.

Embodiment described above is merely to illustrate technological thought and the feature of the present invention, in its object is to make this area Technical staff will appreciate that present disclosure and implement according to this, it is impossible to only limit the patent model of the present invention with the present embodiment Enclose employing, the most all equal changes made according to disclosed spirit or modification, still fall in the scope of the claims of the present invention.

Claims (10)

1. a near end of thighbone Medullary fixation device, it is characterised in that: main nail (100), near-end pinning (200), skin in including marrow Matter bone screw (300), compression pinning (500) and tail cap (400), in described marrow, main nail (100) has near-end and band is cuspidated Far-end, described proximal extension to described far-end, and angled setting;
Described near-end has the first through hole (101) coordinated with described near-end pinning (200), described first through hole (101) axis Being 50 °~65 ° settings with described near-end, described far-end has the second through hole coordinated with described os integumentale screw (300) (102);
In described marrow, main nail (100) upper end has screwed hole (103), described tail cap (400) and described compression pinning (500) from upper Being arranged under in described screwed hole (103), described compression pinning (500) lower end compresses described near-end pinning (101), described tail Cap (400) is threadeded with described screwed hole (103), and compresses described compression pinning (500);
Described near-end pinning (200) includes cutter head (201) and knife bar (202), and described cutter head (201) extends to described knife bar (202), described knife bar (202) is positioned at described first through hole (101), and has and coordinate with described compression pinning (500) lower end Step surface (204)
On described first through hole (101), there is stress relief grooves (104).
2. near end of thighbone Medullary fixation device as claimed in claim 1, it is characterised in that: described cutter head (201) is for having spiral shell The cutter head of rotation blade, described first through hole (101) assumes diamond in shape, and four angles of described first through hole (101) that assumes diamond in shape are circular arc Transition;
The quantity of described stress relief grooves (104) is two, and is symmetrically arranged at described first through hole (101) upper and lower two Side;
Each described stress relief grooves (104) is all in wavy.
3. near end of thighbone Medullary fixation device as claimed in claim 2, it is characterised in that: described cutter head (201) is self tapping spiral shell Nail, described first through hole (101) is rounded;
The quantity of described stress relief grooves (104) is two, and is symmetrically arranged at described first through hole (101) upper and lower two Side;
Described stress relief grooves (104) is curved.
4. near end of thighbone Medullary fixation device as claimed in claim 1, it is characterised in that: described step surface (204) is in circular arc Shape, described compression pinning (500) lower end has at least one arc surface (501).
5. near end of thighbone Medullary fixation device as claimed in claim 4, it is characterised in that: described compression pinning (500) lower end There are two arc surfaces (501), and be symmetrical arranged.
6. near end of thighbone Medullary fixation device as claimed in claim 1, it is characterised in that: described compression pinning (500) lower end Being plugged on described step surface (204), described compression pinning (500) lower end is provided with one and coordinates with described step surface (204) Jack (502).
7. near end of thighbone Medullary fixation device as claimed in claim 1, it is characterised in that: described cutter head (201) front end is closed, Multiple cement hole (202) it is evenly arranged with on the outer wall of described cutter head (201).
8. near end of thighbone Medullary fixation device as claimed in claim 7, it is characterised in that: also include bone cement conveying pipe (600), described bone cement conveying pipe (600) front end is closed, and described bone cement conveying pipe (600) outer wall is provided with at least one Orifice (601);
Described bone cement conveying pipe (600) front end can be inserted into described cutter head (201) from described near-end pinning (200) rear end In.
9. near end of thighbone Medullary fixation device as claimed in claim 8, it is characterised in that: the quantity of orifice (601) is one, And it is adjacent with bone cement conveying pipe (600) front end.
10. near end of thighbone Medullary fixation device as claimed in claim 1, it is characterised in that: described second through hole (102) is in length Pass.
CN201610552349.5A 2016-07-14 2016-07-14 A kind of near end of thighbone Medullary fixation device CN106073877A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019024741A1 (en) * 2017-08-03 2019-02-07 大博医疗科技股份有限公司 Femur fixing apparatus
KR20190060216A (en) * 2017-11-24 2019-06-03 재단법인 오송첨단의료산업진흥재단 Apparatus for fixing a fracture part of femur

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