CN209253074U - A kind of skull traction device traction bow structure - Google Patents

Abstract

The utility model discloses a kind of skull traction device traction bow structures, traction bow including arc-shaped structure, the lower section of traction bow is equipped with fixed ring, the both ends of traction bow are across fixed ring and are fixedly connected in fixed ring, more traction bows are set in fixed ring, what more traction bows intersected is provided centrally with connection central part, the fixation that more traction bows pass through angle of intersection between connection central part realization.A kind of skull traction device traction bow structure provided by the utility model, by the traction bow structure for changing traditional skull traction device, it is more solidly fixed to traction bow in fixed 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 lower, recovery rate is low existing for the stainless steel traction bow of tradition, reduces the use cost of skull traction device.

Description

A kind of skull traction device traction bow structure

Technical field

The utility model relates to skull traction device construction applications, in particular to a kind of skull traction device traction bow knot Structure.

Background technique

Traction is the effect using additional tractive force and counterextension power, is pulled to limbs or trunk, to reach To the purpose for the treatment of and adjuvant treatment.It draws existing reset and has fixed function, be widely used in orthopaedics, be a kind of simple and effective Treatment method therapeutic purposes can also be reached by traction especially for inoperable patient.Various skeletal tractions are Fracture, dislocation are carried out by being fixed on the utensils such as the spicule of privileged site, traction bow, rope, hitch frame and traction counterweight It slowly resets, it is both a kind of method of reset, can also play good fixed function.Bone traction must be according to fractures Position, age, the different of classification of fracture adjust leads, weight.

The damage or when chronic disease caused by cervical vertebra is because of internal and external cause is general to use when leading to Cervical stenosis or displacement Skull traction device makes cervical vertebra fix and reset.However traditional skull traction device structure is relatively simple, it is general to only have One traction bow, a traction bow only have two fixing points, it is caused to draw limited strength, and traction effect is poor, moreover, traction Bend flexible deformation during prolonged traction, causes patient that can bear additional pain, traction effect treatment is poor, cervical vertebra Fixed and reset is more difficult, and treatment time is extended, meanwhile, deformed traction bow can not be restored by conventional method to original Shape, thus generally range scrappage, this obviously causes waste to traction bow, moreover, skull traction device belong to it is more expensive Medical instrument, premature failure skull traction device undoubtedly will increase medical treatment cost.

Utility model content

The goal of the invention of the utility model is: in view of the above problems, providing a kind of skull traction device with leading Draw a bow structure, by the traction bow structure of the traditional skull traction device of change, is more solidly fixed to traction bow in fixed ring, The traction strength and traction effect of traction bow are improved, meanwhile, by providing a kind of stainless steel material with shape memory function, To solve the problems, such as that yield strength is excessive, bending property is lower, recovery rate is low existing for the stainless steel traction bow of tradition, reduces cranium The use cost of bone distraction apparatus.

The technical solution adopted in the utility model is as follows: a kind of skull traction device traction bow structure, including arc-shaped The traction bow of structure, which is characterized in that the lower section of traction bow is equipped with fixed ring, and the both ends of traction bow are across fixed ring and fixed company It connecing in fixed ring, more traction bows is set in fixed ring, more traction bows intersections are provided centrally with connection central part, and more The fixation that traction bow passes through angle of intersection between connection central part realization.

Further, fixed ring includes Stiff Block and the elastomer block that can stretch, and Stiff Block and elastomer block are staggered and consolidate Fixed connection forms fixed ring, and the diameter for the annular ring that fixed ring is surrounded can adjust annular size by tensile elasticity block.

Further, connection central part includes the connection shell with hollow structure, and the side wall for connecting shell is equipped with for leading Draw a bow across perforation, traction bow by perforation realize between angle of intersection fixation.

Further, the traction bow is two, and two traction bows are in right-angled intersection, and connection is arranged in the central point of right-angled intersection Central part connects centre in the surface at fixed ring center.

Further, the traction bow is made 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 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 stainless steel material preparation method the following steps are included:

Steel ingot is obtained after step 1, raw metal melting casting, then steel ingot is hot-forged by ingot conditioning surface dregs Pressure, forging and stamping temperature control are pressed into plate at 1000 DEG C, in primary hot forging, then cool down plate to 780-820 DEG C, again to plate Hot forging swaging is carried out into the steel bar of required specification, steel bar is cooled to the furnace room temperature, obtains blank steel bar；

Blank steel bar is carried out stress relief annealing by step 2, needed for being then processed into blank steel bar with mach mode Shape obtains initial state product, and initial state product is placed in heat-treatment furnace and is heated to 620 DEG C, keeps the temperature 20-30min, then oily It quenches to room temperature, obtains semi-finished product；

Step 3, at room temperature carries out bending ductility deformation to semi-finished product, is then placed in deformed semi-finished product It is heated to 580 DEG C in heating furnace, keeps the temperature 30min, then cools to room temperature with the furnace again, repeats the operation of step 3, until semi-finished product Recovery strain be 4% until, obtain finished product.

In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are: the utility model provides A kind of skull traction device traction bow structure make traction bow by changing the traction bow structure of traditional skull traction device It is more solidly fixed in fixed ring, improves the traction strength and traction effect of traction bow, meanwhile, have by providing one kind The stainless steel material of shape memory function, solves that yield strength existing for the stainless steel traction bow of tradition is excessive, bending property Problem lower, recovery rate is low reduces the use cost of skull traction device.

Detailed description of the invention

Fig. 1 is the three dimensional structure diagram of the skull traction device of the utility model；

Fig. 2 is the Stiff Block partial cross-sectional structural diagram of the utility model；

Fig. 3 is the connection central part schematic view of the front view of the utility model；

Fig. 4 is the connection central part schematic cross-sectional view of the utility model.

Marked in the figure: 1 is fixed ring, 2 be Stiff Block, and 201 be air hole, 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 shell, and 902 be screw rod, 903 be connection cover, and 904 be sleeve, and 905 be boss, and 10 be retaining ring, and 11 be spongy layer.

Specific embodiment

With reference to the accompanying drawing, the utility model is described in detail.

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

As shown in Figures 1 to 4, a kind of skull traction device, the fixed ring 1 including cyclic structure, fixed ring 1 include rigidity Block 2 and the elastomer block 3 that can be stretched, Stiff Block 2 and elastomer block 3 are staggered and are fixedly connected to form fixed ring 1, that is to say It says, the diameter for the annular ring that fixed 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 on the side wall outside fixed ring 1, fixed It is fitted with traction screw 5 in the casing 4 of position, one end of the remotely located casing 4 of traction screw 5 is fixedly connected with pressing portion 6, traction The other end of screw 5 passes through locating sleeve 4 and Stiff Block 2 and forms traction syringe needle 7, and traction screw 5 can be in 4 He of locating sleeve Axis direction between Stiff Block 2 along traction screw 5 moves, and traction screw 5 can be formed with locating sleeve 4 and is threadedly engaged, into And precession of the traction syringe needle 7 in fixed ring 1 is realized by rotation pressing portion 6 and screws out operation.

In order to preferably fix fixed ring 1, prevent fixed ring 1 from sliding on head, the top of Stiff Block 2 is fixed It is connected with the traction bow 8 of arched shape, the both ends of traction bow 8 are fixedly connected on Stiff Block 2, and traction bow 8 is across entire Fixed ring 1, the i.e. spanwise dimension of traction bow 8 are not less than the annular ring diameters size of fixed ring 1.The top setting of fixed ring 1 is more Root traction bow 8, the center setting connection central part 9 that more traction bows 8 intersect, more traction bows 8 are realized by connection central part 9 The fixation of angle each other connects and is provided with retaining ring 10 on central part 9, to draw counterweight convenient for placing for connecting rope.

Further, in order to make the angle between connection central part 9 preferably fixed traction bow 8, central part 9 is connected Including the connection shell 901 with hollow structure, the side wall for connecting shell 901 is equipped with perforation (not marking in figure), in order to lead It draws a bow and 8 passes through, the offset of traction bow 8 is limited by perforating, and then reach the technology of the angle between fixed traction bow 8 Draw is better achieved convenient for skull traction device in effect.Further, in order to not make traction bow 8 during the installation process not It can shift and shake, so that skull traction device is more smooth and is more stably mounted on the head of patient, in connection shell In 901, connects the bottom of shell 901 vertically and be fixedly connected with screw rod 902, external screw thread is provided on screw rod 902, connect shell 901 upper surface is opened wide and passes through connection cover 903 and seals, and the top of connection cover 903 is arranged retaining ring 10, and connection cover 903 is towards connection Vertical in the middle part of the inner wall of shell 901 to fix and be connected with sleeve 904, sleeve 904 has hollow structure, and the inner wall of sleeve 904 is set It is equipped with internal screw thread, screw rod 902 passes through traction bow 8 and is threadedly engaged with 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 expanding formation boss 905 outward passes through boss 905 limit and the extruding of sleeve 904 are fixed on traction bow 8 firmly in connection shell 901.

Further, the span that traction bow 8 can be changed during expanding due to fixed ring 1, it is therefore desirable to traction bow 8 while having yield strength well, it is necessary to there is bending strength well, and there is surrender by force in traditional stainless steel Big, the lower problem of bending property is spent, and in use, stainless steel traction bow becomes after multiple plastic deformation It obtains irregularly, its reinstatement cannot be made by way of pulling or beaing, traction bow in irregular shape can make fixed ring On each Stiff Block unbalance stress be difficult to adjust to required tractive force when with traction counterweight add weight traction, 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 utility model provide a kind of the stainless with shape memory function of low cost Steel material, specifically, the stainless steel material with shape memory function of the utility model meaning is calculated by mass percentage It is composed of the following components: carbon 0.09-0.12%, nickel 4.36-5.23%, chromium 3.86-5.20%, manganese 12.46-13.33%, Silicon is 2.51-3.01%, and the total amount of niobium 1.47-1.89%, titanium 4.23-4.87%, yttrium 0.20-0.40%, p and s do not surpass 0.035% is crossed, surplus is iron and its inevitable impurity.

Further, with shape memory function stainless steel traction bow preparation method the following steps are included:

Steel ingot is obtained after step 1, raw metal melting casting, then steel ingot is hot-forged by ingot conditioning surface dregs Pressure, forging and stamping temperature control is at 1000 DEG C, and initially heating rate when heating is controlled in 80 DEG C/h, when steel ingot is warming up to 600 DEG C, It improves heating rate and is pressed into plate until steel ingot reaches 1000 DEG C to 200 DEG C/h in primary hot forging, then cools down plate extremely 780-820 DEG C, hot forging swaging is carried out again to plate into the steel bar of required specification, steel bar is cooled to the furnace room temperature, obtains original Base steel bar；

Blank steel bar is carried out stress relief annealing by step 2, and blank steel bar is then processed into traction with mach mode Arc-shaped obtains initial state traction bow, and initial state traction bow is placed in heat-treatment furnace and is heated to 620 DEG C, keeps the temperature 20-30min, Then oil quenching obtains semi-finished product traction bow to room temperature；

Step 3, at room temperature carries out bending ductility deformation to semi-finished product traction bow, then by deformed traction Bow, which is placed in heating furnace, is heated to 580 DEG C, keeps the temperature 30min, then cools to room temperature with the furnace again, repeats the operation of step 3, until Until the recovery strain of traction bow is 4%, finished product traction bow is obtained.

Among the above, if apparent plastic deformation occurs in use in traction bow obtained, traction can be removed Bow carries out traction bow to heat the shape that can resile, and it is strong thus to overcome surrender present in the stainless steel traction bow of tradition Degree is big, bending property is low, can recovery capability difference problem, improve the traction effect of skull traction device.Further, at this In the stainless steel of utility model, although belonging to Fe-Mn-Si memory alloy system, still must strict control carbon content, If the content of carbon is more than 0.09-0.12%, the yield strength for the stainless steel material that can make is excessive, results in the need for consumption very Big physical strength could be bent traction bow, be unfavorable for the use of skull traction device, meanwhile, yield strength, which becomes larger, can make later period heating extensive It becomes difficult again, needing to be heated to very high temperature can be only achieved the effect of shape recovery, this undoubtedly brings inconvenience.Further Ground, although yttrium among the above belongs to rare earth element, but it cannot be by lanthanide series and scandium element substitution, when yttrium is substituted by scandium Afterwards, the ability of traction bow recoverable deformation is decreased obviously, and yield strength is significantly raised, and deformed traction bow restores in heating When, part recovery can only be carried out, has significant difference with original shape, therefore, yttrium has weight in the stainless steel of the utility model It acts on, can not arbitrarily be substituted.

In order to which the stainless steel material of the utility model is better described, it is exemplified below specific embodiment, as shown in table 1.

1 stainless steel material embodiment 1-6(mass percent of table: %)

The main performance of stainless steel material made from above-described embodiment is as shown in table 2:

The main performance of 2 embodiment 1-6 final alloy material of table (at 25 DEG C of room temperature)

Available by table 2, the tensile strength of the stainless steel material of the utility model is very low, only 383-485 N/mm², Yield strength is no more than 375 N/mm², toughness reaches 8.5 J/cm², shape recovery ratio reaches 97.4%, while with yttrium content Increase, shape recovery rate increases, it is indicated above that the shape that the addition of yttrium can be improved Fe-Mn-Si memorial alloy is restored Rate.The stainless steel material of the utility model solves that yield strength existing for traditional stainless steel material is excessive, and bending property is lower The problem of, the easily-deformable defect scrapped of traction bow is overcome, the service life of traction bow is extended.

Further, it is contemplated that skull traction device can be worn over the head of patient for a long time, and the utility model is in Stiff Block 2 On be provided with multiple air holes 201, as shown in Fig. 2, air hole 201 is evenly arranged on Stiff Block 2, one side of setting of air hole 201 Face can solve airtight, fuel-displaced problem of easily perspiring at fixed ring 1, on the other hand can be by air hole 201 to fixed ring 1 Thimerosal is added dropwise in place, and then achievees the purpose that disinfection cleaning, avoids the trouble that skull traction device is removed in distraction procedure, It ensure that traction effect.

As an improvement embodiment, since skull traction device is mainly constituted with metal parts, rigidity Larger, after patient wears, experience sense and comfort are very poor, especially when skull traction device and patients head's matching degree are poor When, patient can therefore and bear larger pain, be unfavorable for patient carry out traction therapeutic, to solve this problem, fixed ring 1 it is interior One circle spongy layer 11 of wall bonding, spongy layer 11 can form an annular coil structures along the inner wall of fixed ring 1, can also only exist Exist on Stiff Block 2, and then forms section nodular.In the present invention, since the annular ring diameters of fixed ring 1 are variable, and it is extra large The tensile property of continuous material itself is poor, therefore, spongy layer 11 can be positioned only on the inner wall of Stiff Block 2, elastomer block 3 Inner wall is not provided with, and thus overcomes the problems, such as that sponge material tensile property is poor.Skull traction can be buffered by the way that spongy layer 11 is arranged The rigidity of device increases the flexibility of fixed ring 1, when contacting the head of itself and patient, improves the experience sense of patient and comfortable Sense, while fixed ring 1 can be made sufficiently to be bonded with head, improve skull traction device and the matching degree of patients head, patient The pain born is effectively reduced, conducive to the treatment of traction operation, meanwhile, spongy layer 11 can also be with 201 phase of air hole It is equipped with, thimerosal is conveyed into spongy layer 11 by air hole 201, head is infiltrated by spongy layer 11, imitate cleaning Fruit more preferably, is also conducive to perspire oil removing in distraction procedure, effectively prevent bacteria breed at this.Further, the thickness of spongy layer 11 Degree should be not less than 3mm, preferably between 5-10mm, more preferably 7mm.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (3)

1. a kind of skull traction device traction bow structure, the traction bow including arc-shaped structure, which is characterized in that traction bow Lower section is equipped with fixed ring, and the both ends of traction bow across fixed ring and are fixedly connected in fixed ring, more are arranged in fixed ring and leads Draw a bow, the intersection of more traction bows is provided centrally with connection central part, more traction bows by connection central part realize each other it Between angle of intersection fixation, fixed ring includes Stiff Block and the elastomer block that can stretch, and Stiff Block and elastomer block are staggered simultaneously It is fixedly connected to form fixed ring, the diameter for the annular ring that fixed ring is surrounded can adjust annular ruler by tensile elasticity block It is very little.

2. skull traction device as described in claim 1 traction bow structure, which is characterized in that connection central part includes having The connection shell of hollow structure, the side wall for connecting shell are equipped with the perforation passed through for traction bow, and traction bow is realized by perforation The fixation of angle of intersection each other.

3. skull traction device as described in claim 1 traction bow structure, which is characterized in that the traction bow is two, Two traction bows are in right-angled intersection, and the central point setting connection central part of right-angled intersection connects centre in fixed ring center Surface.