CN105342686B - Screw thread spicule - Google Patents
Screw thread spicule Download PDFInfo
- Publication number
- CN105342686B CN105342686B CN201510934843.3A CN201510934843A CN105342686B CN 105342686 B CN105342686 B CN 105342686B CN 201510934843 A CN201510934843 A CN 201510934843A CN 105342686 B CN105342686 B CN 105342686B
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- Prior art keywords
- supporting section
- screw thread
- section
- bone
- fracture
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Classifications
-
- 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
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
- A61B17/8635—Tips of 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
- A61B2017/564—Methods for bone or joint treatment
Abstract
The present invention relates to the field of medical instrument technology, and in particular to a kind of screw thread spicule, with the fixed section being connect with nearside cortex of bone and the first supporting section and the second supporting section that are used to support offside cortex of bone, the length of first supporting section and the second supporting section differs.In the said program of the application, screw thread spicule includes different the first supporting sections and the second supporting section of length, when actual operation uses, the first supporting section or the second supporting section that are of convenient length according to fracture selection carry out the support of offside cortex of bone, so that the screw thread spicule of the application can be suitable for the support of different fracture sites, the use scope of the application screw thread spicule is increased, simplifies operation preparation.
Description
Technical field
The present invention relates to the field of medical instrument technology, and in particular to a kind of screw thread spicule.
Background technology
Fracture is that the continuity of bone structure is broken completely or partially, for its reason, is mainly the following situation：
Direct violence：Violence directly acts on a certain position of bone and the position is caused to fracture, often with different degrees of soft tissue injury；Indirectly
Violence：Make to fracture at a distance by longitudinal conduction, leverage or twisting action when indirect violence acts on；The strain of accumulation property：
For a long time, direct or indirect damage repeatedly, slight can cause a certain privileged site fracture of limbs, also known as fatigue fracture.
The treatment of fracture generally using replacement and fixation, after the reduction of the fracture, because unstable, easily occurs to shift again, therefore need
It is fixed, fracture site is made gradually to heal.At present, common fixing means has outer fixation：It is stretched tight using clamping plate, gypsum
The devices such as band, exterior fixing rack, traction braking are fixed；Inner fixed law：By surgical incision fracture site, using steel plate,
Fracture site is fixed in draw point, intramedullary needle, bone screws etc..
Current bone screws, structure are typically to include rivet nut, and one end of rivet nut is sharp end, and the other end is tail end, nail
Screw thread is provided on body, by its tail end precession rivet nut, rivet nut is made to sequentially pass through the nearside cortex of bone of fracture both sides and to side seam
Cortex, and then realize connection and fixation to fracture site.
With going deep into for research, the inventors of the present application found that there is what cannot be avoided to ask for the bone screws of above structure
Topic, is embodied in：It fractures various informative, for Fracture Simple, bone screws using the above structure can play good solid
Fixed and connection effect.
But it for complicated fractures such as compression fracture, collapsed fracture and comminuted fracturees, is but no longer applicable in, reason is
Following several respects：
On the one hand：After this kind of complicated fracture of compression fracture, collapsed fracture occurs, sclerotin is fragmented into polylith, if still using
Traditional bone screws are attached fixation, need to carry out coordination fixation using multiple bone screws so that surgical procedure is complicated, occurs
Iatrogenic injury risk is also very big；And for the smaller fragmentation bone block of size, in bone screws are difficult to puncture into, into being unable to
To good connection fixed effect；
On the other hand：For compression fracture and collapsed fracture, compression fracture forms compression bone block, collapsed fracture hair after occurring
It is formed after life and collapses bone block, in compression bone block or after collapsing bone block reset, due to the part into offside cortex of bone of bone screws
For sharp end, the sharp end is on the direction along bone screws axis, it is difficult to play pressure and dimension to compressing bone block or collapsing bone block
The effect of holding, and then be difficult to play direct supporting role to compressing bone block or collapsing bone block on the direction along bone screws axis；
Another further aspect：Due to can not be played directly on the direction along bone screws axis to compressing bone block or collapsing bone block
Excellent support effect, so, after bone screws fixation, compression bone block at bone screws sharp end or collapse bone block and easily occur
The problems such as position of bone is lost, considerable distress is brought to patient.
So based on above-mentioned deficiency, there is an urgent need for one kind at present to be applicable not only to conventional Fracture Simple, but also suitable for compression
Fracture and collapsed fracture, can be on the direction along bone screws axis to compressing bone block or collapsing the bone screws of bone block excellent support
Structure.
Invention content
It is an object of the invention to be directed to current bone screws above shortcomings, provide it is a kind of be suitable for compression fracture and
Collapsed fracture, can be on the direction along bone screws axis to compressing bone block or collapsing the murices pin structure of bone block excellent support.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes：
A kind of screw thread spicule has the fixed section being connect with nearside cortex of bone and first that is used to support offside cortex of bone
The length of support section and the second supporting section, first supporting section and the second supporting section differs.
In the said program of the application, screw thread spicule includes different the first supporting sections and the second supporting section of length,
In actual operation in use, the first supporting section or the second supporting section that are of convenient length according to fracture selection are carried out to side seam
The support of cortex so that the screw thread spicule of the application can be suitable for the support of different fracture sites, increases the application
The use scope of screw thread spicule simplifies operation preparation；
Meanwhile the screw thread spicule of the application, when suitable first supporting section of designated length or the second supporting section, wherein
One section extend into the connection that fracture is fractured, and another section is then stayed in outside, stays in external the first supporting section or second
Connecting portion of the supporting section as external auxiliary tool by external auxiliary tool and is stayed in external the first supporting section or second
The cooperation of supporting section realizes the connection of fixed section and nearside cortex of bone and splits out, due to the first supporting section or the second supporting section all
With certain length, the reliability that guarantee is facilitated to be connect with external auxiliary tool, so that the screw thread spicule of the application exists
There can be preferable reliability when installing or splitting out；When screw thread spicule needs to reside in internal, needed according to actual medical
It asks, screw thread spicule is cut in suitable position；
In another aspect, when the screw thread spicule using the application carries out fracture connection, due to staying in the first external support
Section or the second supporting section are stayed outside nearside cortex of bone, are had longer length, are avoided screw thread spicule shorter and slip into bone
Great malpractice is caused in matter depths, so also improving safety used in this application.
Preferably, the fixed section and the cooperation position of nearside cortex of bone are adjustable, make first supporting section or second
The amount of stretching into that supporting section stretches into fracture is adjustable.
In the said program of the application, fixed section and the cooperation position of nearside cortex of bone are adjustable so that, in the first support
It, can be by adjusting the cooperation position of fixed section and nearside cortex of bone when section or the end face of the second supporting section are contacted with being supported bone block
It puts, and then adjusts the amount of stretching into of the first supporting section or the second supporting section, and then adjust the end of the first supporting section or the second supporting section
Force size in face of being supported bone block while making to be supported bone block and obtain secure support and maintain, and avoids being supported bone
Block causes malpractice by excessive pressure, and then ensure that the reliability that the application screw thread spicule uses.
Preferably, the fixed section is sets threaded thread segment.
In the said program of the application, fixed section to set threaded thread segment, be first so that fixed section with closely
The cooperation position of side seam cortex is adjustable, meanwhile, after screw thread spicule supports to place, additionally it is possible to prevent screw thread spicule from occurring in axial direction
Slip, the further safety and reliability for ensureing the support of the application screw thread spicule.
Preferably, the side wall of first supporting section and the second supporting section is smooth, and it is respectively arranged at the fixed section
Both sides.
When using traditional bone screws, due to having screw thread on bone screws side wall, so it is connected into fracture
Connect and support this more or less risk all to surrounding tissue there are iatrogenic injuries such as scuffings in the process.So above-mentioned
In scheme, the side wall of the first supporting section and the second supporting section is set as smooth side wall, the further screw thread spicule that reduces is being stretched
Enter the risk that fracture scratches the iatrogenic injuries such as surrounding tissue in the process；Meanwhile it also reduces supporting section and surrounding is driven to answer
Position bone block is mobile and the risk of dislocation or position of bone loss occurs, and further ensures the curative effect of operation；
What is more important, using traditional bone screws, since it will be punctured into offside cortex of bone, so, to bone
When folding part position is fixed, inherently fracture can be caused further to damage；And the screw thread spicule of the application, it can't wear
It lunges in offside cortex of bone, so itself also avoids this further damage；
In addition, when needing to remove screw thread spicule, exactly because also traditional bone screws need to puncture into offside cortex of bone,
So its demolishing process difficulty is very big, existing risk of medicine accident is also very big；And the screw thread spicule dismounting of the application is more square
Just, it is removed from female screw, surrounding tissue will not be damaged.
Preferably, first supporting section and the second supporting section are cylindric.
In the said program of the application, the first supporting section and the second supporting section are set as cylindric so that the application
The processing and manufacturing of screw thread spicule it is simple, while ensureing the first supporting section and smooth the second supporting section side wall, also make the first support
The end face of section and the second supporting section is circular cross-section, and then when being supported, and eliminating rotation screw thread spicule makes the first support
Section or the second supporting section end surface shape are with being supported the step that bone block is adapted.
Preferably, the diameter of first supporting section and the second supporting section differs.
In the said program of the application, the diameter of the first supporting section and the second supporting section differs, so so that,
In actual use, corresponding one section of suitable diameter is chosen according to fracture situation and is used as supporting section, further facilitates the application
The scope of application of screw thread spicule.
Preferably, the end face of first supporting section and the second supporting section is burnishing surface.
In the said program of the application, due to the end face of the first supporting section and the second supporting section be burnishing surface, Ke Yiyong
The end face of first supporting section and the second supporting section on direction in an axial direction supports and maintains the offside cortex of bone after resetting, so
So that the screw thread spicule of the application can be adapted for this kind of complicated fracture of compression fracture, collapsed fracture, and fragmentation bone block is difficult to pass through
Traditional bone screws obtain excellent support and situation about maintaining.
In actual use, first to the nearside cortex of bone drilling bore hole of fracture, the first supporting section or the second supporting section
Gradually stretch into fracture, the end face of the first supporting section or the second supporting section is gradually pressed in offside cortex of bone, and then realizes offside
The support of cortex of bone, since the contact jaw of the first supporting section or the second supporting section and offside cortex of bone is burnishing surface, more traditional bone
For the sharp end of screw, the application more firm and reliable along the support on the first supporting section or the second supporting section axial direction,
And then greatly reduce the risk of position of bone loss；
In another aspect, it is burnishing surface to be also due to the end face of the first supporting section and the second supporting section in the application, for pressure
Contracting fracture, this kind of complicated fracture of collapsed fracture, during the first supporting section or the second supporting section gradually stretch into this, due to the
The excellent support of the end face of one supporting section or the second supporting section so that the first supporting section or the second supporting section can actively strut pressure
Contracting bone block collapses bone block and overlapping bone block, is resetted to compressing bone block, collapsing bone block and being overlapped bone block, that is to say, that this Shen
Screw thread spicule please is during stretching into fracture and carrying out fracture fixation, additionally it is possible to play the role of reseting fracture, Jin Erjian
The operative treatment of fracture is changed, especially for the operative treatment of compression fracture, this kind of complicated fracture of collapsed fracture, therapeutic process
It is greatly facilitated；
Also need to further illustrate be：It is stretched into during fracture is supported this in the screw thread spicule of the application,
Since the end face of the first supporting section and the second supporting section is burnishing surface, so, for the sharp end compared to traditional bone screws, this
The screw thread spicule of application also reduces the risk that the iatrogenic injuries such as surrounding tissue are scratched during stretching into, and alleviates patient's
Pain also improves the curative effect of operation.
As the preferred embodiment of the application, the end face edge of first supporting section and the second supporting section be provided with chamfering or
Fillet.
In said program, the end face edge of the first supporting section and the second supporting section is provided with chamfering or fillet, in not shadow
Under the premise of ringing support reliability, the first supporting section and the second supporting section is avoided to there are sharp edges, and then further reduce
The application screw thread spicule scratches the risk of the iatrogenic injuries such as surrounding tissue during fracture is stretched into；Meanwhile it also reduces
First supporting section and the second supporting section end face have resetted the risk that bone block is mobile and generation dislocation or the position of bone are lost around driving, into
The curative effect for ensuring operation of one step.
Preferably, first supporting section, the second supporting section and fixed section coaxial arrangement.
In the said program of the application, the first supporting section, the second supporting section and fixed section are coaxially disposed, facilitate this Shen
Screw thread spicule please smoothly enters fracture and is supported, and is also convenient for splitting out for screw thread spicule.
Preferably, to be connected smoothly between the fixed section and the first supporting section and the second supporting section.
In said program, to be connected smoothly between fixed section and the first supporting section and the second supporting section, it is first
The mechanical property of the application screw thread spicule is improved, avoids between fixed section and the first supporting section and the second supporting section that there are wedge angles
Or other mutation structures and there is the situation of stress concentration, thereby reduce the application screw thread spicule fracture risk, improve
The reliability of the application screw thread spicule further ensures the curative effect of operation；Meanwhile also reduce the application threaded bone
Needle stretches into the risk that fracture scratches surrounding tissue.
Compared with prior art, the advantageous effect of screw thread spicule of the present invention：
1st, the screw thread spicule of the application includes different the first supporting sections and the second supporting section of length, makes in actual operation
Used time, the first supporting section or the second supporting section that are of convenient length according to fracture selection carry out the support of offside cortex of bone,
So that the screw thread spicule of the application can be suitable for the support of different fracture sites, making for the application screw thread spicule is increased
With range, operation preparation is simplified；
2nd, simultaneously, the screw thread spicule of the application, when suitable first supporting section of designated length or the second supporting section,
In one section extend into the connection that fracture is fractured, another section is then stayed in outside, is stayed in the first external supporting section or the
Connecting portion of two supporting sections as external auxiliary tool by external auxiliary tool and is stayed in the first external supporting section or the
The cooperation of two supporting sections is realized the connection of fixed section and nearside cortex of bone and is split out, due to the first supporting section or the second supporting section
All there is certain length, the reliability that guarantee is facilitated to be connect with external auxiliary tool, so that the screw thread spicule of the application
There can be preferable reliability when installing or splitting out；
3rd, when the screw thread spicule using the application carries out fracture connection, due to staying in the first external supporting section or the
Two supporting sections are stayed outside nearside cortex of bone, are had longer length, are avoided screw thread spicule shorter and slip into sclerotin depths and make
Into great malpractice, so also improving safety used in this application.
The advantageous effect of the application other embodiment：
1st, the screw thread spicule of the application can be adapted for this kind of complicated fracture of compression fracture, collapsed fracture, and fragmentation bone block is difficult
To obtain excellent support and situation about maintaining by traditional bone screws；
2nd, the application is more firm and reliable and then very big along the support on the first supporting section or the second supporting section axial direction
Reduce the position of bone loss risk；
3rd, the screw thread spicule of the application is during stretching into fracture and carrying out fracture fixation, additionally it is possible to play reseting fracture
Effect, and then the operative treatment of fracture is simplified, especially for the operation of compression fracture, this kind of complicated fracture of collapsed fracture
Treatment, therapeutic process are greatly facilitated；
4th, for compared to the sharp end of traditional bone screws, the screw thread spicule of the application is also reduced to be drawn during stretching into
Hinder the risk of the iatrogenic injuries such as surrounding tissue, alleviate the pain of patient, also improve the curative effect of operation.
Description of the drawings：
Fig. 1 is the structure diagram of the application,
It is marked in figure：
The end face of the first supporting sections of 1-, the second supporting sections of 2-, 3- fixed sections, the first supporting sections of 4- and the second supporting section.
Specific embodiment
With reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood
Range for the above-mentioned theme of the present invention is only limitted to following embodiment, all to belong to this based on the technology that the content of present invention is realized
The range of invention.
Embodiment 1,
As shown in Figure 1, a kind of double flat head thread spicule, has the fixed section 3 being connect with nearside cortex of bone and is used to support
The first supporting section 1 and the second supporting section 2 of offside cortex of bone, the length of 1 and second supporting section 2 of the first supporting section differ.
In the said program of the present embodiment, screw thread spicule includes the first different supporting section 1 of length and the second support
Section 2, in actual operation in use, the first supporting section 1 or the second supporting section 2 that are of convenient length according to fracture selection carry out
The support of offside cortex of bone, so that the screw thread spicule of the present embodiment can be suitable for the support of different fracture sites, increase
The use scope of the present embodiment screw thread spicule, simplifies operation preparation；
Meanwhile the screw thread spicule of the present embodiment, when suitable first supporting section 1 of designated length or the second supporting section 2,
Wherein one section extend into the connection that fracture is fractured, and another section is then stayed in outside, stay in the first external supporting section 1 or
Connecting portion of second supporting section 2 as external auxiliary tool, by external auxiliary tool and stay in the first external supporting section 1 or
The cooperation of the second supporting section of person 2 realizes the connection of fixed section 3 and nearside cortex of bone and splits out, due to the first supporting section 1 or the
Two supporting sections 2 all have certain length, the reliability that guarantee is facilitated to be connect with external auxiliary tool, so that the present embodiment
Screw thread spicule can have preferable reliability when installing or splitting out；When screw thread spicule needs to reside in internal, press
According to the facts border medical demand cuts screw thread spicule in suitable position；
In another aspect, when the screw thread spicule using the present embodiment carries out fracture connection, due to staying in external first
Support 1 or second supporting section 2 of section is stayed outside nearside cortex of bone, is had longer length, is avoided screw thread spicule shorter and slide
Enter sclerotin depths and cause great malpractice, so also improving the safety that the present embodiment uses.
Embodiment 2,
As shown in Figure 1, the cooperation position of screw thread spicule as described in Example 1, the fixed section 3 and nearside cortex of bone can
It adjusts, makes the amount of stretching into that 1 or second supporting section 2 of the first supporting section stretches into fracture adjustable, the fixed section 3 is is provided with spiral shell
The thread segment of line, the side wall of 1 and second supporting section 2 of the first supporting section is smooth, and is respectively arranged at 3 liang of the fixed section
Side, 1 and second supporting section 2 of the first supporting section are cylindric.
In the said program of the present embodiment, fixed section 3 and the cooperation position of nearside cortex of bone are adjustable so that, first
It, can be by adjusting fixed section 3 and nearside cortex of bone when the end face 4 of 1 or second supporting section 2 of supporting section is contacted with being supported bone block
Cooperation position, and then adjust the amount of stretching into of the first supporting section 1 or the second supporting section 2, and then adjust the first supporting section 1 or the second
The end face 4 of supporting section 2 makes to be supported bone block while obtain secure support and maintain, again to being supported the force size of bone block
It avoids being supported bone block and malpractice is caused by excessive pressure, and then it is reliable to ensure that the present embodiment screw thread spicule uses
Property.
In the said program of the present embodiment, fixed section 3 is so that fixed section 3 first to set threaded thread segment
It is adjustable with the cooperation position of nearside cortex of bone, meanwhile, after screw thread spicule supports to place, additionally it is possible to prevent screw thread spicule from axis occurs
Upward slip, the further safety and reliability for ensureing the support of the present embodiment screw thread spicule.
When using traditional bone screws, due to having screw thread on traditional bone screws side wall, so its enter fracture into
Row connects and supports more or less risk all to surrounding tissue there are iatrogenic injuries such as scuffings during this.So
In said program, the side wall of the first supporting section 1 and the second supporting section 2 is set as smooth side wall, further reduces threaded bone
Needle scratches the risk of the iatrogenic injuries such as surrounding tissue during fracture is stretched into；Meanwhile it also reduces supporting section and drives week
The risk for having resetted that bone block is mobile and generation dislocation or the position of bone are lost is enclosed, further ensures the curative effect of operation；
What is more important, using traditional bone screws, since it will be punctured into offside cortex of bone, so, to bone
When folding part position is fixed, inherently fracture can be caused further to damage；And the screw thread spicule of the present embodiment, it can't
It punctures and enters in offside cortex of bone, so itself also avoids this further damage；
In addition, when needing to remove screw thread spicule, exactly because also traditional bone screws need to puncture into offside cortex of bone,
So its demolishing process difficulty is very big, existing risk of medicine accident is also very big；And the screw thread spicule of the present embodiment is removed more
It is convenient, it is removed from female screw, surrounding tissue will not be damaged.
In the said program of the present embodiment, the first supporting section 1 and the second supporting section 2 are set as cylindric so that this
The screw thread spicule processing and manufacturing of embodiment is simple, while ensureing the first supporting section 1 and smooth 2 side wall of the second supporting section, also makes
The end face 4 of first supporting section 1 and the second supporting section 2 is circular cross-section, and then when being supported, and eliminates rotation screw thread spicule
Make the first supporting section 1 or 2 end face of the second supporting section, 4 shape and be supported the step that bone block is adapted.
Embodiment 3, as shown in Figure 1：
Screw thread spicule as described in embodiment 1 or 2, the diameter of 1 and second supporting section 2 of the first supporting section differ.
In the said program of the present embodiment, the diameter of the first supporting section 1 and the second supporting section 2 differs, in this way, making
, in actual use, corresponding one section of suitable diameter is chosen according to fracture situation and is used as supporting section, further facilitates this
The scope of application of embodiment screw thread spicule.
Embodiment 4, as shown in Figure 1：
Screw thread spicule as described in embodiment 1 or 2 or 3, the end face 4 of 1 and second supporting section 2 of the first supporting section is flat
Whole face.
It, can since the end face 4 of the first supporting section 1 and the second supporting section 2 is burnishing surface in the said program of the present embodiment
With supported and maintained on direction in an axial direction with the end face 4 of the first supporting section 1 and the second supporting section 2 reset after to side seam skin
Matter, so that, the screw thread spicule of the present embodiment can be adapted for this kind of complicated fracture of compression fracture, collapsed fracture, fragmentation bone
Block is difficult to obtain excellent support and situation about maintaining by traditional bone screws.
In actual use, first to the nearside cortex of bone drilling bore hole of fracture, the first supporting section 1 or the second supporting section
2 gradually stretch into fracture, and the end face 4 of the first supporting section 1 or the second supporting section 2 is gradually pressed in offside cortex of bone, and then realize
The support of offside cortex of bone, since the contact jaw of the first supporting section 1 or the second supporting section 2 and offside cortex of bone is burnishing surface, compared with
For the sharp end of traditional bone screws, the present embodiment is more steady along the support in 2 axial direction of the first supporting section 1 or the second supporting section
Gu and reliably, and then greatly reduce the risk of position of bone loss；
In another aspect, it is burnishing surface to be also due to the end face 4 of the first supporting section 1 and the second supporting section 2 in the present embodiment, it is right
In compression fracture, this kind of complicated fracture of collapsed fracture, during the first supporting section 1 or the second supporting section 2 gradually stretch into this,
Due to the first supporting section 1 or the excellent support of the end face 4 of the second supporting section 2 so that the first supporting section 1 or the second supporting section 2 can
Actively to strut compression bone block, collapse bone block and overlapping bone block, resetted to compressing bone block, collapsing bone block and being overlapped bone block,
That is, the screw thread spicule of the present embodiment is during stretching into fracture and carrying out fracture fixation, additionally it is possible to play reset bone
The effect of folding, and then the operative treatment of fracture is simplified, especially for the hand of compression fracture, this kind of complicated fracture of collapsed fracture
Art is treated, and therapeutic process is greatly facilitated；
Also need to further illustrate be：Fracture, which is stretched into, in the screw thread spicule of the present embodiment is supported this process
In, since the end face 4 of the first supporting section 1 and the second supporting section 2 is burnishing surface, so, compared to the sharp end of traditional bone screws
For, the screw thread spicule of the present embodiment also reduces the risk that the iatrogenic injuries such as surrounding tissue are scratched during stretching into, and subtracts
The light pain of patient also improves the curative effect of operation.
Embodiment 5, as shown in Figure 1：
Screw thread spicule as described in embodiment 1-4 any one, the end face 4 of 1 and second supporting section 2 of the first supporting section
Edge is provided with chamfering or fillet, and first supporting section 1, the second supporting section 2 and fixed section 3 are coaxially disposed, the fixed section 3
To be connected smoothly between the first supporting section 1 and the second supporting section 2.
In said program, 4 edge of end face of the first supporting section 1 and the second supporting section 2 is provided with chamfering or fillet, not
Under the premise of influencing support reliability, the first supporting section 1 and the second supporting section 2 is avoided to there are sharp edges, and then further
Reduce the risk that the present embodiment screw thread spicule scratches the iatrogenic injuries such as surrounding tissue during fracture is stretched into；Meanwhile
It reduces and has resetted bone block movement around the first supporting section 1 and the drive of 2 end face 4 of the second supporting section and dislocation or position of bone loss occurs
Risk, further ensure the curative effect of operation.
In the said program of the present embodiment, the first supporting section 1, the second supporting section 2 and fixed section 3 are coaxially disposed, side
Just the screw thread spicule of the present embodiment smoothly enters fracture and is supported, and is also convenient for splitting out for screw thread spicule.
In said program, to be connected smoothly between 3 and first supporting section 1 of fixed section and the second supporting section 2, first
It is the mechanical property for improving the present embodiment screw thread spicule, avoids between 3 and first supporting section 1 of fixed section and the second supporting section 2
There are wedge angle or other mutation structures and stress concentration occur, thereby reduce the wind of the present embodiment screw thread spicule fracture
Danger improves the reliability of the present embodiment screw thread spicule, further ensures the curative effect of operation；Meanwhile it also reduces
The present embodiment screw thread spicule stretches into the risk that fracture scratches surrounding tissue.
Above example is only to illustrate the present invention and not limits technical solution described in the invention, although this explanation
Book is with reference to above-mentioned each embodiment to present invention has been detailed description, but the present invention is not limited to above-mentioned specific implementation
Mode, therefore any modify to the present invention or equivalent replacement；And the technical side of all spirit and scope for not departing from invention
Case and its improvement, are intended to be within the scope of the claims of the invention.
Claims (10)
1. screw thread spicule, it is characterised in that：With the fixed section being connect with nearside cortex of bone and it is used to support offside cortex of bone
The length of first supporting section and the second supporting section, first supporting section and the second supporting section differs, and is respectively arranged at described
Fixed section both sides.
2. screw thread spicule as described in claim 1, it is characterised in that：The fixed section and the cooperation position of nearside cortex of bone can
It adjusts.
3. screw thread spicule as claimed in claim 2, it is characterised in that：The fixed section is sets threaded thread segment.
4. screw thread spicule as described in claim 1, it is characterised in that：The side wall light of first supporting section and the second supporting section
It is sliding.
5. screw thread spicule as described in claim 1, it is characterised in that：First supporting section and the second supporting section are cylinder
Shape.
6. screw thread spicule as claimed in claim 5, it is characterised in that：The diameter of first supporting section and the second supporting section is not
Deng.
7. screw thread spicule as claimed in any one of claims 1 to 6, it is characterised in that：First supporting section and the second support
The end face of section is burnishing surface.
8. screw thread spicule as claimed in claim 7, it is characterised in that：The end surface side of first supporting section and the second supporting section
Edge is provided with chamfering or fillet.
9. screw thread spicule as claimed in any one of claims 1 to 6, it is characterised in that：First supporting section, the second support
Section and fixed section coaxial arrangement.
10. screw thread spicule as claimed in any one of claims 1 to 6, it is characterised in that：The fixed section and the first supporting section
And second between supporting section to be connected smoothly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510934843.3A CN105342686B (en) | 2015-12-15 | 2015-12-15 | Screw thread spicule |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510934843.3A CN105342686B (en) | 2015-12-15 | 2015-12-15 | Screw thread spicule |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105342686A CN105342686A (en) | 2016-02-24 |
| CN105342686B true CN105342686B (en) | 2018-07-03 |
Family
ID=55318862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510934843.3A Expired - Fee Related CN105342686B (en) | 2015-12-15 | 2015-12-15 | Screw thread spicule |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105342686B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109567916A (en) * | 2018-12-28 | 2019-04-05 | 浙江康慈医疗科技有限公司 | A kind of metal bone needle of flat syringe needle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201384559Y (en) * | 2009-04-07 | 2010-01-20 | 陆芸 | Screw-thread nail for skeleton connection |
| CN201500170U (en) * | 2009-09-25 | 2010-06-09 | 曹飞 | Supporting rod embedded in thighbone |
| CN202376160U (en) * | 2011-12-21 | 2012-08-15 | 马德发 | Double-ended retractor for surgery |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2448307Y (en) * | 2000-10-31 | 2001-09-19 | 李学军 | Slide-proof bone tracting needle |
| CN2484909Y (en) * | 2001-06-18 | 2002-04-10 | 张希昌 | Double-thread screw probe |
| US8398690B2 (en) * | 2007-02-07 | 2013-03-19 | Apex Biomedical Company, Llc | Rotationally asymmetric bone screw |
-
2015
- 2015-12-15 CN CN201510934843.3A patent/CN105342686B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201384559Y (en) * | 2009-04-07 | 2010-01-20 | 陆芸 | Screw-thread nail for skeleton connection |
| CN201500170U (en) * | 2009-09-25 | 2010-06-09 | 曹飞 | Supporting rod embedded in thighbone |
| CN202376160U (en) * | 2011-12-21 | 2012-08-15 | 马德发 | Double-ended retractor for surgery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105342686A (en) | 2016-02-24 |
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