CN107811690A - A kind of skull traction device traction bow structure - Google Patents
A kind of skull traction device traction bow structure Download PDFInfo
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- CN107811690A CN107811690A CN201711277136.7A CN201711277136A CN107811690A CN 107811690 A CN107811690 A CN 107811690A CN 201711277136 A CN201711277136 A CN 201711277136A CN 107811690 A CN107811690 A CN 107811690A
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- traction bow
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/6425—Devices extending alongside the bones to be positioned specially adapted to be fitted across a bone joint
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/6433—Devices extending alongside the bones to be positioned specially adapted for use on body parts other than limbs, e.g. trunk or head
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/645—Devices extending alongside the bones to be positioned comprising a framework
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
- A61B17/66—Alignment, compression or distraction mechanisms
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
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Abstract
The invention discloses a kind of skull traction device traction bow structure, include the traction bow of curved structure, the lower section of traction bow is provided with retainer ring, the both ends of traction bow are across retainer ring and are fixedly connected in retainer ring, more traction bows are set in retainer ring, more traction bows it is intersecting be provided centrally with connecting central part, the fixation of angle of intersection between more traction bows are realized by connecting central part.A kind of skull traction device traction bow structure provided by the invention, by the traction bow structure for changing traditional skull traction device, traction bow is set to be more solidly fixed in retainer ring, improve the traction strength and traction effect of traction bow, simultaneously, by providing a kind of stainless steel material with shape memory function, solve the problems, such as that yield strength is excessive, bending property is relatively low, recovery rate is low existing for the stainless steel traction bow of tradition, reduces the use cost of skull traction device.
Description
Technical field
The present invention relates to skull traction device construction applications, more particularly to a kind of skull traction device traction bow structure.
Background technology
Traction is the effect using additional tractive force and counterextension power, and limbs or trunk are pulled, with up to
To treatment and the purpose of auxiliary treatment.Draw existing reset and have fixation, be widely used in orthopaedics, be a kind of simple and effective
Treatment method, especially for inoperable patient, therapeutic purposes can also be reached by traction.Various skeletal tractions are
The utensils such as spicule, traction bow, rope, hitch frame and traction counterweight by being fixed on privileged site are carried out to fracturing, dislocating
Slowly reset, it is both a kind of method of reset, may also function as good fixation.Bone traction must be according to fractures
Position, age, different adjustment leads, the weight of classification of fracture.
It is general to use when causing Cervical stenosis or displacement when cervical vertebra is because of damage caused by internal and external cause or chronic disease
Skull traction device makes cervical vertebra fix and reset.But traditional skull traction device structure is relatively simple, it is general only
One traction bow, a traction bow only have two fixing points, cause it to draw limited strength, and traction effect is poor, moreover, traction
Bend the flexible deformation during prolonged traction, cause patient to bear extra pain, traction effect treatment is poor, cervical vertebra
Fixed and reset is more difficult, and treatment time is extended, meanwhile, the traction bow after deformation can not be recovered by conventional method to original
Shape, thus scrappage is typically ranged, this obviously causes waste to traction bow, moreover, skull traction device belongs to more expensive
Medicine equipment, premature failure skull traction device can undoubtedly increase medical treatment cost.
The content of the invention
The goal of the invention of the present invention is：For above-mentioned problem, there is provided a kind of skull traction device traction bow
Structure, by changing the traction bow structure of traditional skull traction device, traction bow is more solidly fixed in retainer ring, improve
The traction strength and traction effect of traction bow, meanwhile, by providing a kind of stainless steel material with shape memory function, to solve
The problem of yield strength is excessive, bending property is relatively low, recovery rate is low existing for certainly traditional stainless steel traction bow, reduces skull and lead
The use cost of leading-in device.
The technical solution adopted by the present invention is as follows：A kind of skull traction device traction bow structure, including curved structure
Traction bow, it is characterised in that the lower section of traction bow is provided with retainer ring, and the both ends of traction bow across retainer ring and are fixedly connected on
More traction bows are set in retainer ring, in retainer ring, and what more traction bows intersected is provided centrally with connecting central part, more tractions
Bow by connect central part realize between angle of intersection fixation.
Further, retainer ring includes Stiff Block and the elastomer block that can be stretched, and Stiff Block is staggered and consolidated with elastomer block
Fixed connection forms retainer ring, and the diameter for the annular ring that retainer ring is surrounded can adjust annular size by tensile elasticity block.
Further, connecting central part includes the connection housing with hollow structure, and the side wall for connecting housing is provided with for leading
Draw a bow through perforation, traction bow pass through perforate realize between angle of intersection fixation.
Further, the traction bow is two, and two traction bows are in right-angled intersection, and the central point of right-angled intersection sets connection
Central part, connection centre is in the surface at retainer ring center.
Further, the traction bow is made up of the stainless steel material with shape memory function, and the stainless steel material is pressed
Mass percent calculates composed of the following components：Carbon is 0.09-0.12%, nickel 4.36-5.23%, chromium 3.86-5.20%, manganese
For 12.46-13.33%, silicon 2.51-3.01%, niobium 1.47-1.89%, titanium 4.23-4.87%, yttrium 0.20-0.40%, phosphorus
It is no more than 0.035% with the total amount of sulphur, surplus is iron and its inevitable impurity.
Further, the preparation method of the stainless steel material comprises the following steps：
Steel ingot is obtained after step 1, raw metal melting casting, ingot conditioning surface dregs, steel ingot is then subjected to hot forging pressure, forging
Press temperature control to be pressed into sheet material in a hot forging at 1000 DEG C, then cool down sheet material to 780-820 DEG C, sheet material is carried out again
Hot forging swaging cools to steel bar with the furnace room temperature, obtains blank steel bar into the steel bar of required specification；
Step 2, by blank steel bar carry out stress relief annealing, blank steel bar is then processed into required shape with mach mode
Shape, initial state product is obtained, initial state product is placed in heat-treatment furnace and is heated to 620 DEG C, be incubated 20-30min, then oil quenching
To room temperature, semi-finished product are obtained；
Step 3, at ambient temperature, bending ductility deformation is carried out to semi-finished product, the semi-finished product after deformation are then placed in heating
Be heated to 580 DEG C in stove, be incubated 30min, then cool to room temperature with the furnace again, the operation of repeat step 3, until semi-finished product can
Untill recovery deflection is 4%, finished product is obtained.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：A kind of cranium provided by the invention
Bone distraction apparatus traction bow structure, by changing the traction bow structure of traditional skull traction device, make traction bow more firmly
It is fixed in retainer ring, improves the traction strength and traction effect of traction bow, meanwhile, there is shape memory by providing one kind
The stainless steel material of function, solves existing for the stainless steel traction bow of tradition that yield strength is excessive, bending property is relatively low, recovers
The problem of rate is low, reduce the use cost of skull traction device.
Brief description of the drawings
Fig. 1 is the three dimensional structure diagram of the skull traction device of the present invention；
Fig. 2 is the Stiff Block partial cross structural representation of the present invention；
Fig. 3 is the connection central part main structure diagram of the present invention；
Fig. 4 is the connection central part cross section structure diagram of the present invention.
Marked in figure：1 is retainer ring, and 2 be Stiff Block, and 201 be air-vent, and 3 be elastomer block, and 4 be locating sleeve, and 5 be to lead
Draw screw, 6 be pressing portion, and 7 be traction syringe needle, and 8 be traction bow, and 9 be connection central part, and 901 be connection housing, and 902 be screw rod,
903 be connection cover, and 904 be sleeve, and 905 be boss, and 10 be clasp, and 11 be spongy layer.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figures 1 to 4, a kind of skull traction device, includes the retainer ring 1 of cyclic structure, and retainer ring 1 includes rigidity
Block 2 and the elastomer block 3 that can be stretched, Stiff Block 2 are staggered with elastomer block 3 and are fixedly connected to form retainer ring 1, that is to say
Say, the diameter of the annular ring that retainer ring 1 is surrounded can adjust to obtain suitably sized by tensile elasticity block 3.Stiff Block 2
Middle part be provided with locating sleeve 4, locating sleeve 4 is vertical and is fixedly mounted on Stiff Block 2 towards in the side wall outside retainer ring 1, fixed
Coordinate in the sleeve pipe 4 of position and traction screw 5 is installed, one end of the remotely located sleeve pipe 4 of traction screw 5 is fixedly connected with pressing portion 6, traction
The other end of screw 5 is through locating sleeve 4 and Stiff Block 2 and forms traction syringe needle 7, and traction screw 5 can be in the He of locating sleeve 4
Moved between Stiff Block 2 along the axis direction of traction screw 5, traction screw 5 can form screw thread with locating sleeve 4 and coordinate, and enter
And realize that precession and back-out of the traction syringe needle 7 in retainer ring 1 operate by rotating pressing portion 6.
In order to preferably fix retainer ring 1, prevent retainer ring 1 from being slided on head, the top of Stiff Block 2 is fixed
The traction bow 8 of arched shape is connected with, the both ends of traction bow 8 are fixedly connected with Stiff Block 2, and traction bow 8 is across whole
Retainer ring 1, the i.e. spanwise dimension of traction bow 8 are not less than the annular ring diameters size of retainer ring 1.The top of retainer ring 1 sets more
Root traction bow 8, the intersecting centrally disposed connection central part 9 of more traction bows 8, more traction bows 8 are realized by connecting central part 9
The fixation of angle each other, connect and be provided with clasp 10 on central part 9, for connecting rope, be easy to place traction counterweight.
Further, in order that connection central part 9 preferably fixed traction bends the angle between 8, central part 9 is connected
Including the connection housing 901 with hollow structure, the side wall of connection housing 901 is provided with perforation（Do not marked in figure）, in order to lead
Draw a bow and 8 pass through, the skew of traction bow 8, and then the technology of the angle between fixed traction bow 8 are limited by perforating
Effect, it is easy to skull traction device that draw is better achieved.Further, in order that traction bow 8 in installation process not
It can shift and rock, so that skull traction device more smoothly and is more stably arranged on the head of patient, in connection housing
In 901, connect the bottom of housing 901 vertically and be fixedly connected with screw rod 902, external screw thread is provided with screw rod 902, connect housing
901 upper surface is opened wide and sealed by connection cover 903, and the top of connection cover 903 sets clasp 10, and connection cover 903 is towards connection
Vertical in the middle part of the inwall of housing 901 to fix and be connected with sleeve 904, sleeve 904 has hollow structure, and the inwall of sleeve 904 is set
Internal thread is equipped with, screw rod 902 coordinates through traction bow 8 and the screw thread of sleeve 904, and then compresses traction bow 8 by sleeve 904.More
Further, in order to improve the compression effect of sleeve 904, the bottom of screw rod 902 is outwards expanding to form boss 905, passes through boss
The extruding of 905 spacing and sleeve 904 makes traction bow 8 firmly be fixed in connection housing 901.
Further, because retainer ring 1 can change the span of traction bow 8 during expanding, it is therefore desirable to traction bow
8 while possessing yield strength well, it is necessary to there is bending strength well, and surrender be present by force in traditional stainless steel
Big, the problem of bending property is relatively low is spent, and in use, stainless steel traction bow becomes after multiple plastic deformation
Obtain irregularly, it can not make its reinstatement by way of pulling or beaing, and traction bow in irregular shape can make retainer ring
On each Stiff Block unbalance stress, with traction counterweight add weight draw when, it is difficult to adjust required tractive force, cause to draw
Effect is deteriorated, and patient can bear more unnecessary pains, and therefore, traction bow keeps regular shape important, in order to overcome
These defects existing for stainless steel traction bow, the present invention provide a kind of inexpensive stainless steel with shape memory function
Material, specifically, the signified stainless steel material with shape memory function of the present invention are calculated by with the following group by mass percentage
It is grouped into：Carbon is 0.09-0.12%, nickel 4.36-5.23%, chromium 3.86-5.20%, manganese 12.46-13.33%, and silicon is
2.51-3.01%, niobium 1.47-1.89%, titanium 4.23-4.87%, yttrium 0.20-0.40%, the total amount of p and ses are no more than
0.035%, surplus is iron and its inevitable impurity.
Further, the preparation method of the stainless steel traction bow with shape memory function comprises the following steps：
Steel ingot is obtained after step 1, raw metal melting casting, ingot conditioning surface dregs, steel ingot is then subjected to hot forging pressure, forging
Temperature control is pressed at 1000 DEG C, initially heating rate control during heating is in 80 DEG C/h, when steel ingot is warming up to 600 DEG C, raising
Until steel ingot reaches 1000 DEG C, sheet material is pressed into a hot forging, then cools down sheet material to 780-820 to 200 DEG C/h for heating rate
DEG C, hot forging swaging is carried out again to sheet material into the steel bar of required specification, is cooled to steel bar with the furnace room temperature, is obtained blank steel bar；
Step 2, by blank steel bar carry out stress relief annealing, blank steel bar is then processed into traction arch with mach mode
Shape, initial state traction bow is obtained, initial state traction bow is placed in heat-treatment furnace and is heated to 620 DEG C, be incubated 20-30min, then
Oil quenching obtains semi-finished product traction bow to room temperature；
Step 3, at ambient temperature, bending ductility deformation is carried out to semi-finished product traction bow, then put the traction bow after deformation
580 DEG C are heated in heating furnace, is incubated 30min, then cools to room temperature, the operation of repeat step 3, until traction with the furnace again
Untill the recovery strain of bow is 4%, finished product traction bow is obtained.
In above-mentioned, if obvious plastic deformation occurs in use in obtained traction bow, traction can be removed
Bow, traction bow is carried out into heating can resile shape, and the surrender thus overcome present in the stainless steel traction bow of tradition is strong
Degree is big, bending property is low, can recovery capability difference the problem of, improve the traction effect of skull traction device.Further, at this
In the stainless steel of invention, although it belongs to Fe-Mn-Si memory alloy systems, the content of carbon still must be strictly controlled, if carbon
Content more than 0.09-0.12%, then the yield strength of stainless steel material that can make to obtain is excessive, results in the need for consumption very substantially
Power could bend traction bow, be unfavorable for the use of skull traction device, meanwhile, yield strength, which becomes conference, makes later stage heating recover to become
Obtain difficult, it is necessary to be heated to the effect that very high temperature can be only achieved shape recovery, this undoubtedly brings inconvenience.Further, on
Although yttrium in stating belongs to rare earth element, but it can not be by lanthanide series and scandium element substitution, after yttrium is substituted by scandium, traction
The ability of bow recoverable deformation is decreased obviously, and yield strength is significantly raised, and for the traction bow after deformation when heating recovery, it can only
Part recovery is carried out, has significant difference with original shape, therefore, yttrium plays an important roll in the stainless steel of the present invention, can not be with
Meaning is substituted.
In order to which the stainless steel material of the present invention is better described, specific embodiment is exemplified below, as shown in table 1.
The stainless steel material embodiment 1-6 of table 1（Mass percent：%）
The main performance of stainless steel material made from above-described embodiment is as shown in table 2：
The main performance of the embodiment 1-6 final alloy materials of table 2（At 25 DEG C of room temperature）
It can be obtained by table 2, the tensile strength of stainless steel material of the invention is very low, only 383-485 N/mm2, yield strength
No more than 375 N/mm2, toughness reaches 8.5 J/cm2, shape recovery ratio reaches 97.4%, while with the increase of yttrium content, shape
Shape response rate increases, it is indicated above that the addition of yttrium can improve the shape recovery ratio of Fe-Mn-Si memorial alloys.The present invention
Stainless steel material solve the problem of yield strength existing for traditional stainless steel material is excessive, and bending property is relatively low, overcome
Traction bow yielding the defects of scrapping, extend the service life of traction bow.
Further, it is contemplated that skull traction device can be worn over the head of patient for a long time, and the present invention is set on Stiff Block 2
Multiple air-vents 201 are equipped with, as shown in Fig. 2 air-vent 201 is distributed on Stiff Block 2, the setting of air-vent 201 on the one hand can
With solve the problems, such as at retainer ring 1 it is airtight, easily perspire fuel-displaced, on the other hand can be dripped by air-vent 201 at retainer ring 1
Add thimerosal, and then sterilize the purpose of cleaning, avoid the trouble that skull traction device is pulled down in distraction procedure, ensure
Traction effect.
As an improvement embodiment, because skull traction device is mainly formed with metal parts, its rigidity
Larger, after patient wears, experience sense and comfort are very poor, particularly when skull traction device and patients head's matching degree are poor
When, therefore patient can bear larger pain, be unfavorable for carrying out traction therapeutic to patient, to solve the problem, retainer ring 1 it is interior
The circle spongy layer 11 of wall bonding one, spongy layer 11 can form an annular coil structures along the inwall of retainer ring 1, and it can also only exist
Exist on Stiff Block 2, and then form section nodular.In the present invention, because the annular ring diameters of retainer ring 1 are variable, and sponge material
The tensile property of material itself is poor, therefore, can be positioned only at spongy layer 11 on the inwall of Stiff Block 2, the inwall of elastomer block 3
It is not provided with, the problem of thus overcoming sponge material tensile property difference.By setting spongy layer 11 to buffer skull traction device
Rigidity, increase retainer ring 1 flexibility, when making its head contact with patient, improve the experience sense and comfort of patient, together
When retainer ring 1 can be made fully to be bonded with head, improve skull traction device and the matching degree of patients head, patient is born
Pain effectively reduced, beneficial to traction operation treatment, meanwhile, spongy layer 11 can also be engaged with air-vent 201 and set
Put, thimerosal conveyed into spongy layer 11 by air-vent 201, head is infiltrated by spongy layer 11, makes cleaning performance more preferably,
Also it is beneficial to perspire oil removing in distraction procedure, effectively prevents bacteria breed at this.Further, the thickness of spongy layer 11 should not be small
In 3mm, preferably between 5-10mm, more preferably 7mm.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (6)
1. a kind of skull traction device traction bow structure, include the traction bow of curved structure, it is characterised in that traction bow
Lower section is provided with retainer ring, and the both ends of traction bow across retainer ring and are fixedly connected in retainer ring, set more to lead in retainer ring
Draw a bow, more traction bows it is intersecting be provided centrally with connecting central part, more traction bows by connect central part realize each other it
Between angle of intersection fixation.
2. skull traction device as claimed in claim 1 traction bow structure, it is characterised in that retainer ring include Stiff Block and
The elastomer block that can be stretched, Stiff Block and elastomer block are staggered and are fixedly connected to form retainer ring, the ring that retainer ring is surrounded
The diameter of shape circle can adjust annular size by tensile elasticity block.
3. skull traction device as claimed in claim 1 traction bow structure, it is characterised in that connection central part includes having
The connection housing of hollow structure, the side wall for connecting housing are provided with the perforation passed through for traction bow, and traction bow, which passes through to perforate, to be realized
The fixation of angle of intersection each other.
4. skull traction device as claimed in claim 1 traction bow structure, it is characterised in that the traction bow is two,
Two traction bows are in right-angled intersection, and the central point of right-angled intersection sets connection central part, and connection centre is in retainer ring center
Surface.
5. skull traction device as claimed in claim 1 traction bow structure, it is characterised in that the traction bow is by with shape
The stainless steel material of shape memory function is made, and the stainless steel material is composed of the following components by mass percentage：Carbon is
0.09-0.12%, nickel 4.36-5.23%, chromium 3.86-5.20%, manganese 12.46-13.33%, silicon 2.51-3.01%, niobium are
1.47-1.89%, titanium 4.23-4.87%, yttrium 0.20-0.40%, the total amounts of p and ses are no more than 0.035%, surplus be iron and
Its inevitable impurity.
6. skull traction device as claimed in claim 1 traction bow structure, it is characterised in that the system of the stainless steel material
Preparation Method comprises the following steps：
Steel ingot is obtained after step 1, raw metal melting casting, ingot conditioning surface dregs, steel ingot is then subjected to hot forging pressure, forging
Press temperature control to be pressed into sheet material in a hot forging at 1000 DEG C, then cool down sheet material to 780-820 DEG C, sheet material is carried out again
Hot forging swaging cools to steel bar with the furnace room temperature, obtains blank steel bar into the steel bar of required specification；
Step 2, by blank steel bar carry out stress relief annealing, blank steel bar is then processed into required shape with mach mode
Shape, initial state product is obtained, initial state product is placed in heat-treatment furnace and is heated to 620 DEG C, be incubated 20-30min, then oil quenching
To room temperature, semi-finished product are obtained；
Step 3, at ambient temperature, bending ductility deformation is carried out to semi-finished product, the semi-finished product after deformation are then placed in heating
Be heated to 580 DEG C in stove, be incubated 30min, then cool to room temperature with the furnace again, the operation of repeat step 3, until semi-finished product can
Untill recovery deflection is 4%, finished product is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711277136.7A CN107811690A (en) | 2017-12-06 | 2017-12-06 | A kind of skull traction device traction bow structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711277136.7A CN107811690A (en) | 2017-12-06 | 2017-12-06 | A kind of skull traction device traction bow structure |
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| Publication Number | Publication Date |
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| CN107811690A true CN107811690A (en) | 2018-03-20 |
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| CN201711277136.7A Withdrawn CN107811690A (en) | 2017-12-06 | 2017-12-06 | A kind of skull traction device traction bow structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111297456A (en) * | 2020-03-10 | 2020-06-19 | 中国人民解放军第四军医大学 | Skull traction frame in operation |
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2017
- 2017-12-06 CN CN201711277136.7A patent/CN107811690A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111297456A (en) * | 2020-03-10 | 2020-06-19 | 中国人民解放军第四军医大学 | Skull traction frame in operation |
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