CN208942344U - A kind of novel thighbone neck locked pressurized bone plate - Google Patents
A kind of novel thighbone neck locked pressurized bone plate Download PDFInfo
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- CN208942344U CN208942344U CN201821107493.9U CN201821107493U CN208942344U CN 208942344 U CN208942344 U CN 208942344U CN 201821107493 U CN201821107493 U CN 201821107493U CN 208942344 U CN208942344 U CN 208942344U
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- bone plate
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- neck
- femur
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Abstract
The utility model discloses a kind of novel thighbone neck locked pressurized bone plates, for the operative treatment of the between twenty and fifty patient with III type fracture of neck of femur of Pauwels, fixing piece including being connected to femur with bone plate main body, by the bone plate main body, the bone plate main body includes the upper main body being bonded with the surface of rotor, the lower main body that is bonded with the surface of femoral shaft；The first lock screw and the second lock screw for penetrating the neck of femur that the fixing piece includes the forcing screw for penetrating neck of femur being connected in the upper main body, is connected in the lower main body.The utility model combines the fixed double action with screw thread locking of pressurization, and making bone plate both can be carried out more vertical fracture line, more short stroke the pressurization positional stability fixing, and there is screw thread locking to guarantee, plate fixation stablizes, and synthetism effect is good.
Description
Technical field
The utility model relates to bone surgery instrument fields, and for the blueness with III type fracture of neck of femur of Pauwels
The operative treatment of prime of life patient, in particular to a kind of novel thighbone neck locked pressurized bone plate.
Background technique
Femur is the thigh of the mankind, and which is connected legs and pelvis, mainly includes femoral head 10, rotor as shown in Fig. 5
12, connect the neck of femur 11 of femoral head and rotor, the femoral shaft 13 being connected to below rotor.The radial cross-sectional area of neck of femur is wanted
Less than the radial cross-sectional area of femoral head and rotor, the human body position bears to be easiest to be broken when enormous impact.
Femoral neck fractures in young and middle aged adults is mostly caused by vertical direction high energy shear power, and bone block is tended to be formed in vertical direction
Displacement, with basal part fracture it is common.Femoral neck fractures in young and middle aged adults is relatively suitble to use Pauwels parting, i.e., according to fracture line side
To parting, by attached drawing 5 it is found that Pauwels parting is divided into I type: 30 ° of fracture line and horizontal line angle <；II type: fracture line and water
Horizontal line angle is at 30 °~50 °；III type: fracture line and horizontal line angle are greater than 50 °, there is numerous fracture lines and water in actual clinical
Case of the angle of horizontal line at 70 ° or more.Wherein III type is most unstable, and injury energy is maximum, and implants are held after operation is fixed
The vertical shear received is maximum, and the complication such as fixation failure, malunion, bone nonunion, femoral head ischemic necrosis most easily occur.
And in the treatment method for carrying out operation resected femur neck using locking nail, locking nail should be kept with fracture line as far as possible
Or close to vertically.Because when locking nail and fracture line are non-parallel, the pressure generated between the broken ends of fractured bone is that screw generates pulling force actually
Be allocated as exerting oneself, and it is another be allocated as firmly then parallel with fracture line, a kind of landslide effect can be generated between fracture site, femur is easy
Vertical shift.
In the prior art, application No. is a kind of 201110282480.1 positioning board for treating fracture of femur neck, three pieces are used
The threaded locking nail in head carries out the fixation of positioning plate, and the pressurization of the locking nail of thread head is very subtle, can only pass through spiral shell
Line props up positioning plate, small to the gathering effect of the femur of fracture site, and it is long that patient restores the period.And application No. is
A kind of 201410458654.9 treatment of femoral neck fracture dynamic pressurization lockplate, uses the locking of three pieces of non-threaded heads
Nail, and after locking nail is screwed into place, locking jackscrew is screwed at locking nail hole to prevent retaining nail.But in practical operation, locking
The screw-in depth of jackscrew is difficult to control, and when screwing in very few, is contacted between locking nail and locking jackscrew not closely, locking nail still can
It generates and moves back nail phenomenon a little, reduce locking and pressurizing effect；When screwing in excessive, locking jackscrew, which squeezes, pushes away locking nail continuation inwards, causes
Unnecessary new stress, increases additional ill-effect in femur.
Also, by taking above-mentioned two patent application as an example, in the prior art all only in the intermediate location of rotor and femoral shaft, i.e.,
The lower section of neck of femur screws in locking nail obliquely, there is a problem of that screw-in depth is too long, and big for fracture line angle, even
When the case where reaching 70 °~90 °, locking nail and the angle of fracture line be unavoidable to be unable to reach or close to vertical, although
More pieces of locking nails use substantially to be fixed in parallel, can fight landslide effect to a certain extent, but is tightened nearly bigelow's septum screw and generated by force
The component of big pulling force still can make to generate cutting between locking nail and sclerotin, reduce fixing intensity.
Utility model content
The purpose of the utility model is to provide a kind of novel thighbone neck locked pressurized bone plates, can overcome the prior art
Shortcoming combines the fixed double action with screw thread locking of pressurization, and making bone plate both can be carried out more vertical fracture line, shorter
The pressurization of stroke is fixed, and the positional stability for having screw thread locking to guarantee, plate fixation are stablized, and synthetism effect is good.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of novel thighbone neck locked pressurized bone plate, for the between twenty and fifty trouble with III type fracture of neck of femur of Pauwels
The operative treatment of person, the fixing piece including being connected to femur with bone plate main body, by the bone plate main body, the bone plate master
The lower main body that body includes the upper main body being bonded with the surface of rotor, is bonded with the surface of femoral shaft；The fixing piece includes connection
In the forcing screw for penetrating neck of femur in the upper main body, penetrate the neck of femur first being connected in the lower main body
Lock screw and the second lock screw.
Preferably, the upper main body is equipped with the pressurization hole for wearing the forcing screw, set in the lower main body
The second bolt apertures for having the first bolt apertures being adapted with first lock screw, being adapted with second lock screw.
Preferably, first bolt apertures are located at below the pressurization hole, second bolt apertures are located at the pressurization
Between hole and first bolt apertures, and second bolt apertures be located at it is described pressurization hole and first bolt apertures line it
Outside.
Preferably, having gap between the pressurization hole and the forcing screw.
Preferably, first bolt apertures are arranged in parallel with second bolt apertures.
Preferably, the bone plate further includes the locating part being rotationally connected with below the pressurization hole, the locating part
In short cylindrical shape, including opened up along the locating part periphery the limiting slot adaptable with the shape on the head, make institute
Forcing screw is stated to get rid of the tear-away portion of the locating part limitation, help turn trough on the locating part outer bottom.
Preferably, being equipped with the link slot for connecting the locating part below the pressurization hole.
Preferably, the bone plate further includes for making locating part guarantor when limiting to the forcing screw
Hold the stable locking mechanism in position；The locking mechanism includes the locking level set on the link slot lower part, is opened in described de-
Open the latch well of the receiving locking club head of the end face in portion, the installation cavity being opened at the top of the latch well, described in connection
Installation cavity and the flexible sliding pin for helping turn trough, lower end are fixed in the installation cavity lower part, and upper end is fixed in the flexible sliding pin
On return spring.
Preferably, the lower slide of the locking level is installed on the intracorporal sliding eye of the bone plate master, the locking
It is equipped between bar bottom end and the sliding eye bottom end and stretches out spring.
Preferably, the bone plate further includes the fixation spiral shell for penetrating the femoral shaft for being connected to the lower lower body
Nail；The lower main body is equipped with the third bolt apertures being adapted with the fixing screws.
In conclusion the utility model has the following beneficial effects:
A kind of novel thighbone neck locked pressurized bone plate combines the fixed double action with screw thread locking of pressurization, makes to connect
Bone plate both can be carried out more vertical fracture line, more short stroke the pressurization positional stability fixing, and there is screw thread locking to guarantee, synthetism
Plate fixing-stable, synthetism effect are good.
And the position limiting structure of forcing screw is increased, and effectively forcing screw can be implemented to limit, anti-on-slip nail moves back nail, and
And it is quickly and easily defined forcing screw and disengages the function switch of forcing screw.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of an embodiment of the present invention；
Fig. 2 is the connection schematic diagram of bone plate and femur on a direction；
Fig. 3 is to analyse structural schematic diagram on Fig. 2 cutting direction；
Fig. 4 is the structural schematic diagram of locating part；
Fig. 5 is the type schematic diagram of femur structure and each Pauwels fracture of neck of femur；
Fig. 6 is structural schematic diagram when locking level is plugged together with latch well；
Structural schematic diagram when Fig. 7 is locking level and latch well disengaging；
Structural schematic diagram when Fig. 8 is locating part and forcing screw disengaging.
Specific embodiment
The utility model is described in more detail for scheme with reference to the accompanying drawing and preferably.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Embodiment: as shown in Figure 1-3, a kind of novel thighbone neck locked pressurized bone plate, for III type of Pauwels
The operative treatment of the between twenty and fifty patient of fracture of neck of femur, including being connected to femur with bone plate main body 200, by bone plate main body
Fixing piece, bone plate main body includes the upper main body 20 being bonded with the surface of rotor 12, the lower master that is bonded with the surface of femoral shaft 13
Body 21；Fixing piece includes the forcing screw 31 for penetrating neck of femur 11 being connected in main body, is connected to penetrating in lower main body
The first lock screw 32 and the second lock screw 33 of neck of femur；Upper main body is equipped with the pressurization hole for wearing forcing screw
201, lower main body be equipped with the first bolt apertures 211 being adapted with the first lock screw, be adapted with the second lock screw the
Two bolt apertures 212.
Bone plate main body is adjacent to the lower part of rotor and the top of femoral shaft, is more easier manual fixation when performing a surgical operation,
Forcing screw head is non-threaded, and setting, can be with deep closer to the angle of vertical fracture line and shorter screw-in at rotor position
Degree is implemented pressurization and is fixed, and reduces landslide effect and femur destroys, fixation is stronger, then passes through the two threaded heads at femoral shaft position
Lock screw be completely fixed bone plate.The fixed double action with screw thread locking of pressurization is combined, can be carried out bone plate both
The pressurization of more vertical fracture line, more short stroke is fixed, and the positional stability for having screw thread locking to guarantee, anti-on-slip nail move back nail.
First bolt apertures are located at below pressurization hole, and the second bolt apertures are located between pressurization hole and the first bolt apertures, and second
Bolt apertures are located at except the line of pressurization hole and the first bolt apertures.So that forcing screw is laid out with two lock screws at triangle, phase
Do not interfere between mutually, stable connection.
The hole in the pressurization hole is to the central part towards the neck of femur, and the holes of first bolt apertures is to towards the stock
The lower part of bone neck.
When operation is implemented, forcing screw is first screwed in into neck of femur, then successively screws in the first lock screw and the second locking spiral shell
Nail.The hole in pressurization hole enables forcing screw to add in neck of femur central part to it to the central part towards the neck of femur
Pressing is fixed, and plus-pressure can more evenly be applied to neck of femur entirety section, be conducive to the uniform tightening in section gap, pressure effect
It is more evenly more preferable；The hole of first bolt apertures makes the first lock screw after screw-in close to stock to the lower part towards the neck of femur
Bone neck lower end, neck of femur lower end most easily take the lead in generating vertical shift, can so effectively reduce the vertical shift of section end.
Pressurizeing has gap between hole and forcing screw.The presence in gap makes forcing screw in the process for screwing in neck of femur
In can carry out screwing in the subtle adjustment of angle according to specific fracture line, keep forcing screw and fracture line closer vertical.
First bolt apertures are arranged in parallel with the second bolt apertures.So that the first lock screw is parallel to each other with the second lock screw
Neck of femur is fixed in ground, thus landslide effect of the confrontation because of the not parallel generation of lock screw and fracture line.
Bone plate further includes the fixing screws 34 for penetrating femoral shaft for being connected to lower lower body；Lower main body is equipped with and consolidates
Determine the adaptable third bolt apertures 213 of screw.The bonding strength for further increasing bone plate and femur is conducive to keep bone plate position
Stabilization is set, synthetism effect is more preferable.
As shown in figure 4, bone plate further includes the locating part 400 being rotationally connected with below pressurization hole, locating part is in short cylindrical
Shape, including opened up along locating part periphery with head the adaptable limiting slot 41 of shape, so that the forcing screw is got rid of limit
The tear-away portion 42 of part limitation helps turn trough 43 on locating part outer bottom.
The head of forcing screw be non-threaded taper or arc or hemispherical, and the shape of limiting slot and pressurization spiral shell
The head of nail is adapted, and guarantees the well stable position-limiting action of locating part；Tear-away portion is to cut locating part along its thickness direction
It cuts to be formed, so that limiting slot is not contacted with forcing screw when locating part is rotated to tear-away portion with forcing screw close position,
It realizes locating part limit function and disengages the conversion of function；Help turn trough can the arbitrary shapes such as rounded, racetrack, rectangle,
Facilitate the rotation of locating part to exert a force, helps turn trough but also must can just be limited with specific purpose tool using unconventional shape
The actuation of part prevents the operation of layman.
As shown in figs 6-8, the link slot 202 for connecting locating part is equipped with below pressurization hole.Locating part is installed on connection
In slot, and with the bone plate main body after link slot by shaft, the modes such as shaft coupling or bearing are rotatablely connected, and make locating part can
The stable rotation in link slot.
Bone plate further includes the locking mechanism for keeping locating part holding position when limiting to forcing screw stable；
Locking mechanism includes the locking level 204 set on link slot lower part, is opened in the lock of the receiving locking club head of the end face of tear-away portion
Determine chamber 47, the installation cavity 46 being opened at the top of latch well is connected to installation cavity and helps the flexible sliding pin 44 of turn trough, and lower end is fixed in peace
It behave affectedly lower part, upper end is fixed in the return spring 45 on flexible sliding pin.The lower slide of locking level is installed in bone plate main body
Sliding eye 203, be equipped between locking level bottom end and sliding eye bottom end and stretch out spring 205.
Flexible sliding pin and return spring are formed from return sliding pin structure, need to keep forcing screw limit power in locating part
When, under the action of the return spring, flexible sliding pin is contracted in installation cavity at the position of tear-away portion side, is helping turn trough side
Position, which is then stretched out, to be helped except turn trough bottom surface, and locking level has the active force jacked upwards always under the action of stretching out spring,
Locking level is inserted into latch well, so that locating part is connected to each other plate body and cannots rotate relative to each other, is limited groove location at this time and is stablized,
Persistently forcing screw is limited；When installing or removing bone plate, need locating part contact to forcing screw
Limitation, need to only appropriate tool be used to stretch to and help in turn trough at this time, squeeze and help the flexible sliding pin at turn trough end on earth, tear-away portion side
Flexible sliding pin overcome the active force of return spring to stretch out, locking level is pushed out to outside latch well, locating part unlocks, limit
Part affranchises rotation, to make tear-away portion opposite direction forcing screw side, releases limitation of the limiting slot to forcing screw, locks at this time
Fixed pole is connected on limiting slot under the action of stretching out spring.
Claims (10)
1. a kind of novel thighbone neck locked pressurized bone plate, including connect with bone plate main body (200), by the bone plate main body
To the fixing piece of femur, it is characterised in that: the bone plate main body include the upper main body (20) being bonded with the surface of rotor (12),
The lower main body (21) being bonded with the surface of femoral shaft (13)；The fixing piece includes being connected in the upper main body to penetrate femur
The forcing screw (31) of neck (11), the first lock screw (32) for penetrating the neck of femur being connected in the lower main body and
Two lock screws (33);The upper main body is equipped with the pressurization hole (201) for wearing the forcing screw, the lower main body
The for being equipped with the first bolt apertures (211) being adapted with first lock screw, being adapted with second lock screw
Two bolt apertures (212).
2. a kind of novel thighbone neck locked pressurized bone plate according to claim 1, it is characterised in that: described first is spirally connected
Hole is located at pressurization hole lower section, and second bolt apertures are and described between the pressurization hole and first bolt apertures
Second bolt apertures are located at except the line of the pressurization hole and first bolt apertures.
3. a kind of novel thighbone neck locked pressurized bone plate according to claim 1, it is characterised in that: the pressurization hole
Hole is to the central part towards the neck of femur, and the holes of first bolt apertures is to the lower part towards the neck of femur.
4. a kind of novel thighbone neck locked pressurized bone plate according to claim 1, it is characterised in that: the pressurization hole with
There is gap between the forcing screw.
5. a kind of novel thighbone neck locked pressurized bone plate according to claim 1, it is characterised in that: described first is spirally connected
Hole is arranged in parallel with second bolt apertures.
6. a kind of novel thighbone neck locked pressurized bone plate according to claim 1, it is characterised in that: the bone plate is also
Including the locating part (400) being rotationally connected with below the pressurization hole, the locating part is in short cylindrical shape, including along the limit
The limiting slot (41) adaptable with the shape on the head that part periphery opens up makes the forcing screw get rid of the limit
The tear-away portion (42) of part limitation helps turn trough (43) on the locating part outer bottom.
7. a kind of novel thighbone neck locked pressurized bone plate according to claim 6, it is characterised in that: under the pressurization hole
Side is equipped with the link slot (202) for connecting the locating part.
8. a kind of novel thighbone neck locked pressurized bone plate according to claim 7, it is characterised in that: the bone plate is also
Including for making the locating part stable locking mechanism in holding position when limiting to the forcing screw；The locking
Mechanism includes the locking level (204) set on the link slot lower part, is opened in the receiving locking of the end face of the tear-away portion
The latch well (47) of club head, the installation cavity (46) being opened at the top of the latch well, is connected to the installation cavity and described help turns
The flexible sliding pin (44) of slot, lower end are fixed in the installation cavity lower part, and upper end is fixed in the return spring on the flexible sliding pin
(45).
9. a kind of novel thighbone neck locked pressurized bone plate according to claim 8, it is characterised in that: the locking level
Lower slide be installed on the intracorporal sliding eye of bone plate master (203), the locking level bottom end and the sliding eye bottom end it
Between be equipped with stretch out spring (205).
10. a kind of novel thighbone neck locked pressurized bone plate according to claim 1, it is characterised in that: the bone plate
It further include the fixing screws (34) for penetrating the femoral shaft for being connected to the lower lower body；The lower main body is equipped with and institute
State the adaptable third bolt apertures (213) of fixing screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821107493.9U CN208942344U (en) | 2018-07-13 | 2018-07-13 | A kind of novel thighbone neck locked pressurized bone plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821107493.9U CN208942344U (en) | 2018-07-13 | 2018-07-13 | A kind of novel thighbone neck locked pressurized bone plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208942344U true CN208942344U (en) | 2019-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821107493.9U Expired - Fee Related CN208942344U (en) | 2018-07-13 | 2018-07-13 | A kind of novel thighbone neck locked pressurized bone plate |
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| CN (1) | CN208942344U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108852493A (en) * | 2018-07-13 | 2018-11-23 | 王刚 | A kind of novel thighbone neck locked pressurized bone plate |
-
2018
- 2018-07-13 CN CN201821107493.9U patent/CN208942344U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108852493A (en) * | 2018-07-13 | 2018-11-23 | 王刚 | A kind of novel thighbone neck locked pressurized bone plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190607 Termination date: 20210713 |
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| CF01 | Termination of patent right due to non-payment of annual fee |