CN103417280B - Tubular traction pressurization connecting rod control device and outer-bone fixing device - Google Patents
Tubular traction pressurization connecting rod control device and outer-bone fixing device Download PDFInfo
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- CN103417280B CN103417280B CN201310400810.1A CN201310400810A CN103417280B CN 103417280 B CN103417280 B CN 103417280B CN 201310400810 A CN201310400810 A CN 201310400810A CN 103417280 B CN103417280 B CN 103417280B
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Abstract
Disclosed are a tubular traction pressurization connecting rod control device and an outer-bone fixing device. The device is composed of a traction pressurization connecting rod, steel needle fixing clamps and steel needles. The traction pressurization connecting rod is composed of a full-thread connecting rod body, at least one sleeve pipe and nuts, wherein the full-thread connecting rod body is sleeved with the at least one sleeve pipe and the nuts are fixed at the positions, at the two ends of the sleeve pipe, of the full-thread connecting rod body. The steel needle fixing clamps are connected to the traction pressurization connecting rod, and the steel needle fixing clamps are composed of steel needle pressing pads, screwed hole gaskets, bases, screws, upper nuts and lower nuts. The screws sequentially penetrate through holes in the centers of the steel needle pressing pads, holes in the centers of the screwed hole gaskets and holes in the centers of the bases, the upper nuts are located on the steel needle pressing pads and connected with the screws through threads, and the lower nuts are located under the bases and connected with the screws through threads. The tubular traction pressurization connecting rod control device and the outer-bone fixing device are flexible to combine and convenient to operate, have the functions of static fixation, mechanical traction and pressurization, have very good fixing, anti-shearing and anti-rotating capacities, are applicable to spiral fractures, oblique fractures and intertrochanteric unstable fractures of shinbones and thighbones, and are especially applicable to outer fixation of comminuted fracture.
Description
Technical field
The present invention relates to the bone external fixation device that a kind of Orthopeadic Surgery uses, and the holder of the different configurations adopting this device to be combined into.
Background technology
Fracture mostly is the key elements such as daily life, work, violence and causes injury, and is more common in person between twenty and fifty and teenager.After fracture of ulna and radius, can overlap between bone stump, rotate, angulation and lateral displacement deformity, incidence rate account for fracture sum about 12%.The function of forearm is one of principal character of human evolution, spinfunction to increase upper limb and manual dexterity significant, therefore how to keep using function to greatest extent after forearm fracture, be affect the treatment evaluate vital key element.Forearm wound mostly is open damage, how with serious soft tissue injury.Too much easily affect function as removed soft tissue during debridement, very few easily causing infects.Though repeatedly debridement can be adopted, be sometimes still difficult to the result judging last debridement.Once there be skeleton to expose, internal fixtion is used to have the misgivings of delayed infection.The easy generation osteofascial compartment syndrome that soft tissue injury is serious, uses Plate internal fixiation to increase fascia room volume and causes tension force to increase, and is unfavorable for that the supply of soft tissue blood fortune and wound are recovered.Anatomical shape due to radius contains one and rotates bow, uses intramedullary pin easily to make this physiological bending change, causes the ulna broken ends of fractured bone to be separated, spinfunction after impact more.Chi, fracture of radius open reduction have the possibility that ulna and radius disunion occurs, and relevant greatly with peeling operation scope, ulna and radius have higher delayed union and disunion rate.The fracture of dislocation of distal radioulnar joint in merging, resets easily, but maintenance reset has certain difficulty.Ulna Medullary fixation Spin Control is not good, and radius pulp cavity is large, and intramedullary needle is fixing to be more difficult to control and to revolve, and therefore selects protection blood fortune and the fixed form of rational biomechanical environment can be provided to seem extremely important.
Use the fixing forearm fracture of bone External technique treatment, effectively can avoid the generation of the problems referred to above, obtain good clinical effectiveness.But existing exter-nal fixer also exists complicated operation, the problem of adjustment very flexible, cannot realize mechanical commutation draft and pressurization function according to treatment requirement at therapeutic process, can not promote knitting.Application limitation is large, and be difficult to for different fracture situation, flexible combination becomes the holder of different configuration.
Summary of the invention
The object of this invention is to provide a kind of tubulose drawing-off pressurization connecting rod control device and exter-nal fixer, existing exter-nal fixer be solved and be difficult to adjustment, not possess drawing-off pressurization function, cannot the technical problem of flexible assembling configuration.
For achieving the above object, the present invention adopts following technical scheme:
This tubulose drawing-off pressurization connecting rod control device, is made up of pressurize connecting rod, steel needle fixing clamp, draw point of drawing-off;
Described drawing-off pressurization connecting rod by full thread connecting rod, at least one is placed on sleeve pipe on full thread connecting rod, and is connected to the nut composition on the full thread connecting rod at sleeve pipe two ends;
Described steel needle fixing clamp is connected on drawing-off pressurization connecting rod, and steel needle fixing clamp is made up of draw point pressure pad, screw pad, base, screw rod, top nut and lower nut; Screw rod is successively through the hole on draw point pressure pad, screw pad and base, and top nut is connected with screw rod by screw thread above draw point pressure pad, and lower nut is connected with screw rod by screw thread below base, and the diameter of screw rod is identical with the diameter of full thread connecting rod;
Described draw point pressure pad center has without threaded interior hole, the reverse side of draw point pressure pad is with a circle chimb, chimb with the contact surface of screw pad on be carved with sawtooth corrugation, chimb is intervally distributed with draw point installing port corresponding between two, the tail end of draw point is through draw point installing port, and being clamped between draw point pressure pad and screw pad, the tip of draw point is connected on art bone;
Described screw pad center has inner bolt hole;
Described base has without threaded perforations, described base is having the effective groove of one or two clamping cover towards the one side of screw pad, forms single cavity base or double flute base; The steel needle fixing clamp being provided with single cavity base forms single cavity steel needle fixing clamp, and the steel needle fixing clamp being provided with double flute base forms double flute steel needle fixing clamp.
Described steel needle fixing clamp is connected on the sleeve pipe of drawing-off pressurization connecting rod, or is connected directly between on the full thread connecting rod of drawing-off pressurization connecting rod.
Described full thread connecting rod is external thread rod, and length is 150 ~ 300 mm;
Described sleeve pipe is without female thread, and length is 120 ~ 250mm.
In two grooves on described double flute base, one is C shape groove, and another is U-shaped groove.
Described draw point is screw thread half pin, without screw thread half pin or full pin.
The one-sided configuration exter-nal fixer of front boom that this employing tubulose drawing-off pressurization connecting rod control device is assembled into, this holder is made up of drawing-off pressurization connecting rod, at least four single cavity steel needle fixing clamps and four draw points;
Described drawing-off pressurization connecting rod by upper and lower two sleeve pipes, a full thread connecting rod, and is connected to the nut composition on the full thread connecting rod at sleeve pipe two ends;
Wherein two single cavity steel needle fixing clamps are connected on the sleeve pipe on the upside of drawing-off pressurization connecting rod, and two other single cavity steel needle fixing clamp is connected on the sleeve pipe on the downside of drawing-off pressurization connecting rod;
Wherein the tail end of two draw points is fixed on two single cavity steel needle fixing clamps of upside, and tip is connected on the art bone above fracture; The tail end of other two draw points is fixed on two single cavity steel needle fixing clamps of downside, and tip is connected on the art bone below fracture.
The two one-sided configuration exter-nal fixer of bar of femur that this employing tubulose drawing-off pressurization connecting rod control device is assembled into, this holder is made up of two drawing-offs pressurization connecting rods, five double flute steel needle fixing clamps, a single cavity steel needle fixing clamp and six roots of sensation draw points;
Described two drawing-offs pressurization connecting rod parallel arranged Rhizoma Atractylodis Macrocephalae bone side, each drawing-off pressurization connecting rod by three, upper, middle and lower sleeve pipe, a full thread connecting rod, and is connected to the nut composition on the full thread connecting rod at sleeve pipe two ends;
One of them double flute steel needle fixing clamp and a single cavity steel needle fixing clamp are connected on the sleeve pipe on the upside of drawing-off pressurization connecting rod, and all the other four double flute steel needle fixing clamps are connected in the middle part of drawing-off pressurization connecting rod and on the sleeve pipe of downside between two;
Wherein draw point to be inclined upwardly setting according to fracture situation, and its tail end is fixed on single cavity steel needle fixing clamp, and tip is connected on art bone; Other five draw points and drawing-off are pressurizeed, and connecting rod is vertical to be arranged, and its tail end is separately fixed on five double flute steel needle fixing clamps, and tip is connected on art bone.
The near end of thighbone lever configuration exter-nal fixer that this employing tubulose drawing-off pressurization connecting rod control device is assembled into, this holder is made up of two drawing-offs pressurizations connecting rod, eight single cavity steel needle fixing clamps and four draw points;
Described two drawing-offs pressurization connecting rod parallel arranged Rhizoma Atractylodis Macrocephalae bone side, every root drawing-off pressurization connecting rod by a sleeve pipe, a full thread connecting rod, and is connected to the nut composition on the full thread connecting rod at sleeve pipe two ends;
The sleeve pipe of wherein drawing-off pressurization connecting rod is connected with two single cavity steel needle fixing clamps, and full thread connecting rod below sleeve pipe is directly connected with the single cavity steel needle fixing clamp that two are removed screw rod; The connected mode of another root drawing-off pressurization connecting rod is identical with the former;
Wherein two draw points to be inclined upwardly setting according to fracture situation, and its tail end is fixed on the single cavity steel needle fixing clamp on two sleeve pipes simultaneously, and tip is connected on art bone; Other two draw points and drawing-off are pressurizeed, and connecting rod is vertical to be arranged, and its tail end is fixed on the single cavity steel needle fixing clamp of directly connection on two full thread connecting rods simultaneously, and tip is connected on art bone.
The ring type triangle configuration hip joint that this employing tubulose drawing-off pressurization connecting rod control device is assembled into rebuilds exter-nal fixer, and this holder is combined by two drawing-offs pressurization connecting rods, double flute steel needle fixing clamp, single cavity steel needle fixing clamp, screw thread half pin, full pin and ring type, half-ring external fixators;
Described two drawing-offs pressurization connecting rod respectively by full thread connecting rod, a sleeve pipe, and is connected to the nut composition on the full thread connecting rod at sleeve pipe two ends; Two full thread connecting rod bottoms are connected by the upper opening ring of universal joint with ring type, half-ring external fixator, a described single cavity steel needle fixing clamp is fixed on the sleeve pipe on the upside of a drawing-off pressurization connecting rod, screw thread half backshank end is connected with this single cavity steel needle fixing clamp, and the end of thread is fixed near end of thighbone; Two double flute steel needle fixing clamps are connected on the sleeve pipe in the middle part of two drawing-off pressurization connecting rods, and screw thread half backshank end is connected with double flute steel needle fixing clamp, and the end of thread is fixed in femoral shaft;
Described ring type, half-ring external fixator comprise upper and lower two and half hole rings or full hole ring, between upper opening ring and lower hole ring, be connected with connecting rod; Upper opening ring and drawing-off are pressurizeed and are connected with arc between connecting rod and bend, and upper opening ring is connected with single cavity steel needle fixing clamp, screw thread half backshank end and this single cavity steel needle fixing clamp are fixed, and the end of thread is fixed in femoral shaft; Lower hole ring is connected with screw thread half pin and full pin, full pin is through distal femur, and the end of thread and the distal femur of screw thread half pin are fixed.
Described connecting rod adopts quick drawing-off bar, quick drawing-off bar includes threaded rod, interior bar cover and outer bar cover, described threaded rod is inserted in interior bar cover from top to bottom, and described interior bar cover is inserted in outer bar cover from top to bottom, and the lower end of described outer bar cover is provided with the threaded connector be connected with hole ring; Described threaded connector is the internal thread hole being arranged on outer bar cover lower end;
The upper end of described interior bar cover is provided with flanging, and be provided with pressure controller between the upper end of interior bar cover and threaded rod, described pressure controller is overlapped by adjusting sleeve, Stress control and Compress Spring forms, the upper end of described adjusting sleeve is threaded with threaded rod, the bottom of adjusting sleeve is connected with Stress control external threading, the interior bar that described Stress control cover is movably set on the downside of flanging puts, and described Compress Spring is enclosed within the threaded rod between flanging that the upper end of adjusting sleeve and interior bar overlap;
It is uncovered that the medial wall, upper end that described outer bar overlaps is provided with taper, the lateral wall, upper end of outer bar cover is provided with external thread section, and be provided with lock-on connection between the upper end of outer bar cover and interior bar overlap, described lock-on connection is made up of cone shaped elastic circle and locking nut, described locking nut is threaded by external thread section the upper end of the cover of bar outside, described cone shaped elastic circle be inserted in taper uncovered in, be clipped in interior bar cover and between outer bar overlap, and the fixing of the upper end of cone shaped elastic circle is on the upper end of locking nut;
Be provided with bar between the medial wall that the lateral wall, bottom of described interior bar cover and outer bar overlap and overlap pad, the medial surface of bar cover pad is provided with union joint, described interior bar puts and is provided with the locating hole corresponding with union joint, and bar cover pad is fixed on interior bar puts by union joint is relative with locating hole;
The lower end of described outer bar cover is provided with gimbal suspension, gimbal suspension is made up of Connection Block, hinged otic placode, middle pin, axle sleeve and bearing pin, wherein hinged otic placode is arranged on the lower end of outer bar cover, axle sleeve and bearing pin are articulated and connected on hinged otic placode by middle pin, Connection Block is articulated and connected again on bearing pin, and described threaded connector is arranged on Connection Block.
Compared with prior art the present invention has following characteristics and beneficial effect:
This tubulose drawing-off pressurization connecting rod control device is made up of pressurize connecting rod, steel needle fixing clamp, draw point of drawing-off, by the nut at adjustment drawing-off pressurization connecting rod sleeve pipe two ends, draw point axial displacement can be made, and the angle of draw point can be adjusted, realize pressurization and the drawing-off of draw point, appropriateness drawing-off pressurization function is conducive to the reset of fracturing, and is also beneficial to fracture recovering.In addition, because steel needle fixing clamp have employed screw pad, and be equipped with top nut and lower nut, after lower nut locking, draw point position can be made to fix, unclamping by top nut, adjust the angle of draw point.And when needing to change draw point distance, use top nut to fix draw point, unclamp steel needle fixing clamp lower nut, steel needle fixing clamp can be made to move on drawing-off pressurization connecting rod, adjustment draw point distance, by the axial displacement of adjustment draw point, realize pressurization and the drawing-off of draw point.
Steel needle fixing clamp of the present invention can be connected on the sleeve pipe of drawing-off pressurization connecting rod, also can be connected directly between on the full thread connecting rod of drawing-off pressurization connecting rod, combination flexibly, handled easily, there is static fixing and mechanical commutation draft and pressurization function, have well fixing, anti-shearing and prevent rotatory power, be applicable to tibia, the spiral fracture of femur, oblique fracture, unstable fracture between rotor, the particularly extenal fixation of comminuted fracture, single pole can be selected one-sided according to classification of fracture, the one-sided configuration of two bar, lever configuration, configuration is flexibly easy, static fixed function is good, be conducive to the control of rigidity of fixation, to promote union of fracture.
Tubulose drawing-off pressurization connecting rod control device can make mechanical energy (mechanical environment) and bioenergy (tissue regeneration) have the good compatibility (reasonability of Mechanobiology environment), can meet flexible fastening that fracture early implementation provides axis and combined stress to stimulate strong fixing, mid-term, requirement that the later stage provides balance fixing.
Tubulose drawing-off pressurization connecting rod control device can combine according to the needs for the treatment of, meet the fixing of Fracture Simple, complicated fracture and comminuted fracture respectively, overcome that existing product whole system is cured, manufacturing cost is high, it is expensive to use, medical expense is high shortcoming.
After employing tubulose drawing-off pressurization connecting rod control device is implemented to thread a needle and is fixed, maneuver (staff) can be passed through and directly carry out reduction (orthopedic) adjustment, also can reset rapidly by means of by fracture reposition instrument (by Beijing Institute of External Skeletal Fixation Technology's development and production), operative treatment quality can be ensured, reduce workload again, save time, laborsaving, economize medical care expenses.
The treatment use scope of tubulose drawing-off pressurization connecting rod control device is wide, can realize following functions:
1, can according to treatment requirement, by inherent function and the adjusting device of controlling type Bionics Bone external fixator, for fractures provides the function of the reduction of the fracture and adaptability rigidity; 2, for the treatment of Cranial defect, skin injury and shortening deformity of extremity provides the function slowly extended; 3, for the treatment of B&J deformity provides progressively drawing-off orthopaedic function; 4, the comprehensive mechanical function under complex situations, provides the biomechanical environment adapted with bone and soft tissue regeneration.These specific functions above-mentioned are not available for other apparatus and Therapeutic Method.
The external fixator that have employed tubulose drawing-off pressurization connecting rod control device has multiple comprehensive function: static fixing, dynamically fixing, drawing-off, pressurization, rectification angulation deformity, correct side displacement, rotation deformity and stiffness reliability function.In clinical practice, these functions both can play specific effect, also can play total effect, as:
1, static fixed function: fixing (the such as femoral trochanteric both can having implemented whole-course treatment, condyle of femur, tibial metaphysis is fractured, radius far-end fracture, the whole process of the treatment such as articular fracture is fixed, or the fractures whole process in conjunction with simple internal fixtion is fixing), the implementation phase of again, property fixes (the strong fixing stage of such as fracture fixation adaptability rigidity, serious splintered fracture etc. with Cranial defect is interim fixing, fixing in early days of osteotomy orthopaedy and fixing that extension osteotomy is delayed in advance), or can implement fixing (such as both legs intersects fixing) of special circumstances.
2, adaptability rigidity of fixation function: in the different phase of fractures, by the regulation and control of external fixator structure and mechanical property, for union of fracture, new bone mineralising provide strong fixing, axial elasticity is fixed, comprehensive flexible fastening and the different rigidity of fixation such as balance is fixing, to realize the optimized reconstruction of bone function.
3, bone and limb lengthening function: application controlling type Bionics Bone external fixator can extend bone length, as osteotomy slowly extends operation, can realize bone transport and limbs synchronous lengthening.
4, osteotomy progressively orthopaedic function: in osteotomy orthopaedy, during the extension orthopaedy of joint, utilize the drawing-off governor motion progressively drawing-off correction deformity of external fixator, as osteotomy drawing-off is rescued, knee joint is inside and outside turns over, and slow drawing-off is rescued.
5, joint drawing-off orthopaedic function: when not osteotomy, with controlling type Bionics Bone external fixator, progressively drawing-off is orthopedic, make arthrogryposis deformity rescued under noinvasive condition, as knee sprung contracture deformity progressively drawing-off rescue, the progressively drawing-off of ankle and foot deformity is rescued.
6, the horizontal drawing-off function of bone: the horizontal drawing-off function of bone, refers to and is carrying out along the longitudinal axis of tibia cutting a long bone soon, it progressively retracts by application controlling type Bionics Bone external fixator, and bone footpath is increased.This art can be used for treating ischemic disease of lower extremity, as vasculitis etc., also can be used for bone footpath is increased.
7, skin drawing-off function: controlling type Bionics Bone external fixator can implement the drawing-off in various direction to skin, with reparing skin defect and wound surface.Can be used for the various types of skin injury of lower limb.In clinical practice, above-mentioned various function is less to be used alone, and is in most cases the use in conjunction of two or more functions.Therefore, the several functions that the present invention has carries out use in conjunction, can obtain beyond thought clinical effectiveness.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is the perspective view of tubulose drawing-off pressurization connecting rod control device.
Fig. 2 is the assembly drawing of tubulose drawing-off pressurization connecting rod control device.
Fig. 3 is the structural representation of screw pad.
Fig. 4 is the assembly drawing of the one-sided configuration exter-nal fixer of front boom.
Fig. 5 is the structural representation of the one-sided configuration exter-nal fixer of front boom.
Fig. 6 is the structural representation of the two bar type of external fixator of femur.
Fig. 7 is the structural representation of near end of thighbone lever configuration exter-nal fixer.
Fig. 8 is the structural representation that ring type triangle configuration hip joint rebuilds exter-nal fixer.
Fig. 9 is the schematic front view of quick drawing-off bar.
Figure 10 is the decomposing schematic representation of quick drawing-off bar.
Figure 11 is the assembling schematic diagram of quick drawing-off bar.
Figure 12 is the schematic diagram of the external thread section on the lateral wall, upper end overlapped of lock-on connection and outer bar.
Figure 13 is the structural representation of quick drawing-off bar.
Figure 14 is the enlarged diagram at I place in Figure 13.
Figure 15 is the enlarged diagram at II place in Figure 13.
Reference numeral: 1-drawing-off pressurization connecting rod, 2-steel needle fixing clamp, 3-draw point, 4-sleeve pipe, 5-full thread connecting rod, 6-nut, 7-single cavity steel needle fixing clamp, 8-double flute steel needle fixing clamp, 9-draw point pressure pad, 9.1-draw point installing port, 9.2-sawtooth corrugation, 10-base, 10.1-groove, 11-screw rod, 12-screw pad, 13-top nut, 14-lower nut, 15-upper opening ring, 16-universal joint, 17-art bone, 18-connecting rod, 18.1-threaded rod, bar cover in 18.2-, the outer bar cover of 18.3-, 18.4-adjusting sleeve, 18.5-Compress Spring, 18.6-Stress control cover, 18.7-taper is uncovered, 18.8-cone shaped elastic circle, 18.9-external thread section, 18.10-locking nut, 18.11-bar cover pad, 18.12-threaded connector, 18.13-flanging, 18.14-bearing pin, 18.15-axle sleeve, 18.16-middle pin, 18.17-hinged otic placode, 18.18-Connection Block, 18.19-union joint, 18.20-locating hole, hole ring, 20-arc bow, 21-screw thread half pin, the full pin of 22-under 19-.
Detailed description of the invention
Embodiment is see shown in Fig. 1 ~ 3, and this tubulose drawing-off pressurization connecting rod control device, is made up of drawing-off pressurization connecting rod 1, steel needle fixing clamp 2, draw point 3.
Described drawing-off pressurization connecting rod 1 by full thread connecting rod 5, at least one is placed on sleeve pipe 4 on full thread connecting rod 5, and the nut 6 connected on the full thread connecting rod 5 at sleeve pipe 4 two ends forms.
Described steel needle fixing clamp 2 is connected on drawing-off pressurization connecting rod 1, and steel needle fixing clamp is made up of draw point pressure pad 9, screw pad 12, base 10, screw rod 11, top nut 13 and lower nut 14; Screw rod 11 is successively through the hole on draw point pressure pad 9, screw pad 12 and base 10, top nut 13 is connected with screw rod 11 by screw thread above draw point pressure pad 9, lower nut 14 is connected with screw rod 11 by screw thread below base, and the diameter of screw rod 11 is identical with the diameter of full thread connecting rod 5.
Described draw point pressure pad 9 center has without threaded interior hole, the reverse side of draw point pressure pad 9 is with a circle chimb, chimb with the contact surface of screw pad 12 on be carved with sawtooth corrugation 9.2, chimb is intervally distributed with draw point installing port 9.1 corresponding between two, the tail end of draw point 3 is through draw point installing port 9.1, and being clamped between draw point pressure pad 9 and screw pad 12, the tip of draw point 3 is connected on art bone 17.
Described screw pad 12 center has inner bolt hole.
Described base 10 has without threaded perforations, and base is having the groove 10.1 of clamping sleeve pipe 4 towards the one side of screw pad 12.
Described steel needle fixing clamp 2 is connected on the sleeve pipe 4 of drawing-off pressurization connecting rod 1, or is connected directly between on the full thread connecting rod 5 of drawing-off pressurization connecting rod 1.
Described full thread connecting rod 5 is external thread rod, and length is 150 ~ 300 mm;
Described sleeve pipe 4 is without female thread, and length is 120 ~ 250mm.
Described base 10 is having the groove 10.1 of one or two clamping sleeve pipe 4 towards the one side of screw pad 12, form single cavity base or double flute base; The steel needle fixing clamp being provided with single cavity base forms single cavity steel needle fixing clamp 7, and the steel needle fixing clamp being provided with double flute base forms double flute steel needle fixing clamp 8.In two grooves on described double flute base, one is C shape groove, and another is U-shaped groove.
Described draw point 3 is screw thread half pins, without screw thread half pin or full pin.
Shown in Fig. 4, Fig. 5, the one-sided configuration exter-nal fixer of front boom that this employing tubulose drawing-off pressurization connecting rod control device is assembled into, this holder is made up of drawing-off pressurization connecting rod 1, at least four single cavity steel needle fixing clamps 7 and four draw points 3;
Described drawing-off pressurization connecting rod 1 is by upper and lower two sleeve pipes 4, full thread connecting rod 5, and the nut 6 be connected on the full thread connecting rod 5 at sleeve pipe 4 two ends forms;
Wherein two single cavity steel needle fixing clamps 7 are connected on the sleeve pipe 4 on the upside of drawing-off pressurization connecting rod 1, and two other single cavity steel needle fixing clamp 7 is connected on the sleeve pipe 4 on the downside of drawing-off pressurization connecting rod 1;
Wherein the tail end of two draw points 3 is fixed on two single cavity steel needle fixing clamps 7 of upside, and tip is connected on the art bone 17 above fracture; The tail end of other two draw points 3 is fixed on two single cavity steel needle fixing clamps 7 of downside, and tip is connected on the art bone 17 below fracture.
The one-sided configuration of front boom, structure is simple, easy to operate, and postoperative patient comfort level is higher, oneself's nursing difficulty is less, is applicable to Fracture Simple, the fracture fixation after fixing in conjunction with internal fixation screw.
The operational approach of front boom one-sided configuration exter-nal fixer is as follows:
1. tibia is threaded a needle
(1) proximal tibia is threaded a needle: the sites accurately should locating capitulum fibulae, and entry point can in the leading edge of capitulum fibulae, parallelly runs through tibia, to avoid blood vessel after damage common peroneal nerve and tibia.
(2) distal tibial is threaded a needle: the position placing full pin is 2cm place on articular surface of ankle, runs through tibia by anterior margin of fibula is parallel, and going out pin mark should pass from great saphenous vein rear.
(3) tibial shaft is threaded a needle: tibial shaft is avoided as far as possible wear full pin.When placing half pin, drill bit or draw point should be avoided to pass contralateral cortex and injured nerve blood vessel.
2. bone contact priority principle is for serious splintered fracture, bone stump should be made to have enough bone contact interfaces, to guarantee union of fracture and reproduction quality, and do not take the loss of bone length too much into account during reset.The bone length lost is made up by bone transport, or carries out limb lengthening after union of fracture.
3. wound repair priority principle will excel at leveraging the reparation that tissue regeneration principle solves bone and soft tissue defects, avoids applying other complexity surgical repair technology.Bone length can be shortened if desired and make wound repair, then carry out Limb lengthening simultaneously.So, can wound repair be guaranteed, Wicresoft's consciousness can be fully demonstrated again.
Shown in Figure 6, the two one-sided configuration exter-nal fixer of bar of femur that this employing tubulose drawing-off pressurization connecting rod control device is assembled into, this holder is made up of two drawing-offs pressurization connecting rod 1, five double flute steel needle fixing clamps 8, single cavity steel needle fixing clamps 7 and six roots of sensation draw point 3;
Described two drawing-offs pressurization connecting rod 1 parallel arranged Rhizoma Atractylodis Macrocephalae bone 17 side, each drawing-off pressurization connecting rod 1 is by three, upper, middle and lower sleeve pipe, 4, full thread connecting rod 5, and the nut 6 be connected on the full thread connecting rod 5 at sleeve pipe 4 two ends forms;
One of them double flute steel needle fixing clamp 8 and a single cavity steel needle fixing clamp 7 are connected on the sleeve pipe 4 on the upside of drawing-off pressurization connecting rod 1, and all the other four double flute steel needle fixing clamps 8 are connected in the middle part of drawing-off pressurization connecting rod 1 and on the sleeve pipe of downside between two;
Wherein draw point 3 to be inclined upwardly setting according to fracture situation, and its tail end is fixed on single cavity steel needle fixing clamp 7, and tip is connected on art bone 17; Other five draw points and drawing-off are pressurizeed, and connecting rod 1 is vertical to be arranged, and its tail end is separately fixed on five double flute steel needle fixing clamps 8, and tip is connected on art bone 17.
The base of double flute steel needle fixing clamp 8 has double flute, can drawing-off pressurize connecting rod 1 sleeve pipe 4 on mobile adjustment, steel needle fixing clamp is provided with screw pad 9, when adjusting the angle and draw point distance that change draw point, two kinds of operations is not interfere with each other; Steel needle fixing clamp there are top nut, lower nut, unclamp top nut and can adjust the angle changing draw point, when unclamping lower nut, steel needle fixing clamp can be made to move on drawing-off pressurization connecting rod, adjustment draw point distance, by the axial displacement of adjustment draw point, realizes pressurization and the drawing-off of draw point.
The two one-sided configuration of bar of femur, flexibly easy, static fixed function is good, easy and simple to handle, has certain mechanical commutation draft and pressurization function, is conducive to the control of rigidity of fixation, to promote union of fracture, is applicable to the fixing of transverse fracture or comminuted fracture.
The operating procedure of the two one-sided configuration exter-nal fixer of bar of femur can with reference to the operating procedure of the operation sequence of ring type triangle configuration and unilateral external fixator.
The effect comprehensive assessment of the two one-sided configuration of bar of femur is as follows:
Within 2006, cooperate with Russian Ilizarov technique center, carried out comparatively systematic research and clinical practice.And to IRHJ technology and carried out some improvement, to 2012 Fengtai, Beijing Guanji hospital etc. carry out clinical practice experiment 86 example: follwing-up in average 3.3 years.Postoperative patient hip pain symptom, Trendelenburg gait all disappear, and limbs are isometric, noresidue deformity. and adopt SPSS 17.0 statistics software to analyze to therapeutic outcome.Result: preoperative Harris hip score average out to 37.91 ± 2.14, postoperative Harris hip score average out to 89.23 ± 1.29.The excellent curative of postoperative 30 routine patients, there is moderate pin site infection in 12 examples, 6 routine knee articulation are limited, and 2 routine stumps are subjected to displacement, and after again processing, all patients are satisfied with to final effect, and life is taken care of oneself completely, and gait is improved.Prove: the two one-sided configuration of bar of improvement femur, compared with traditional operation, improves draw point layout, optimizes configuration, stablize adjustable, Energy and comfort, clinical therapeutic efficacy is satisfied, overcomes the deficiency of traditional operation apparatus and operation method existence, expanded indication, clinic is promoted.
Shown in Figure 7, the near end of thighbone lever configuration exter-nal fixer that this employing tubulose drawing-off pressurization connecting rod control device is assembled into, this holder is made up of two drawing-offs pressurization connecting rod 1, eight single cavity steel needle fixing clamps 7 and four draw points 3;
Described two drawing-offs pressurization connecting rod 1 parallel arranged Rhizoma Atractylodis Macrocephalae bone 17 side, every root drawing-off pressurization connecting rod 1 is by a sleeve pipe 4, full thread connecting rod 5, and the nut 6 be connected on the full thread connecting rod 5 at sleeve pipe 4 two ends forms;
The sleeve pipe 4 of wherein drawing-off pressurization connecting rod 1 is connected with two single cavity steel needle fixing clamps 7, and full thread connecting rod 5 below sleeve pipe 4 is directly connected with the single cavity steel needle fixing clamp 7 that two are removed screw rod 11; The connected mode of another root drawing-off pressurization connecting rod 1 is identical with the former;
Wherein two draw points 3 to be inclined upwardly setting according to fracture situation, and its tail end is fixed on the single cavity steel needle fixing clamp 7 on two sleeve pipes 4 simultaneously, and tip is connected on art bone 17; Other two draw points and drawing-off are pressurizeed, and connecting rod 1 is vertical to be arranged, and its tail end is fixed on the single cavity steel needle fixing clamp 7 of directly connection on two full thread connecting rods 5 simultaneously, and tip is connected on art bone 17.
Near end of thighbone lever configuration is fixed stable, according to lever principle design, and the shearing force of energy antagonism near end of thighbone load.Postoperatively by the adjustment drawing-off in interior side lever or outside or pressurization, collodiaphyseal angle can be controlled, is applicable to unstable fracture between rotor, particularly comminuted fracture, and hip joint comminuted fracture and dislocation.
The operating procedure of near end of thighbone lever configuration is as follows:
1) to capital restraining forces and stability how neck of femur is threaded a needle: screw thread half pin wearing diameter 4 or 5mm according to neck of femur axis, and carries out confirming the correctness of draw point position with X perspective, conscientiously must assess draw point.
2) femoral shaft is threaded a needle: outside suffering limb femur stage casing, wears screw thread half pin of diameter 4mm or 5mm.
Shown in Figure 8, the ring type triangle configuration hip joint that this employing tubulose drawing-off pressurization connecting rod control device is assembled into rebuilds exter-nal fixer, and this holder is combined with ring type, half-ring external fixator by two drawing-offs pressurization connecting rods 1, double flute steel needle fixing clamp 8, single cavity steel needle fixing clamp 7, screw thread half pin 21, full pins 22;
Described two drawing-offs pressurization connecting rod 1 is each by a full thread connecting rod 5, sleeve pipe 4, and the nut 6 be connected on the full thread connecting rod 5 at sleeve pipe 4 two ends forms; Two full thread connecting rod 5 bottoms are connected by the upper opening ring 15 of universal joint 16 with ring type, half-ring external fixator, a described single cavity steel needle fixing clamp 7 is fixed on the sleeve pipe on the upside of a drawing-off pressurization connecting rod 1, screw thread half pin 21 tail end is connected with this single cavity steel needle fixing clamp 7, and the end of thread is fixed near end of thighbone; Two double flute steel needle fixing clamps 8 are connected on the sleeve pipe 4 in the middle part of two drawing-off pressurization connecting rods 1, and screw thread half pin 21 tail end is connected with double flute steel needle fixing clamp 8, and the end of thread is fixed in femoral shaft;
Described ring type, half-ring external fixator comprise upper and lower two and half hole rings or full hole ring, between upper opening ring 15 and lower hole ring 19, be connected with connecting rod 18; Upper opening ring 15 and drawing-off are pressurizeed and are connected with arc between connecting rod 1 and bend 20, and upper opening ring 15 is connected with single cavity steel needle fixing clamp 7, screw thread half pin 21 tail end and this single cavity steel needle fixing clamp 7 are fixed, and the end of thread is fixed in femoral shaft; Lower hole ring 19 is connected with screw thread half pin 21 and full pin 22, full pin is through distal femur, and the end of thread and the distal femur of screw thread half pin are fixed.
Functional characteristics and the indication of ring type triangle configuration hip joint reconstruction exter-nal fixer comprise following intension:
1. rebuild the mechanical structure of hip joint, make to move in the force of pelvic support, shorten and centre of body weight moment, rebuild the weight bearing power of hip joint.
2. maintain the dynamic equilibrium of hip joint, eliminate Trendelenburg disease, improve gait.
3. guarantee that hip joint is close to normal range of movement.
4. eliminate turning up of Valgus osteotomy art, rebuild lower limb normal mechanical axle.
5. extend suffering limb simultaneously, make two lower limb isometric.
6. eliminate and control pelvis lordosis deformity.
7. curative effect is permanent, equivalent and Normal Hip.
8. overall appearance meets lower limb aesthetic requirement.
Classical configuration and draw point layout, cause obvious impact to patient's postoperative life quality, and the impaired complication rate of neural blood vessel is higher, and patient acceptance is greatly affected.Therefore, some scholars have attempted the hip joint reconstruction technique in conjunction with extending in marrow, and for various reasons, not yet extensive use, selects femur ring type triangle and full pin with half pin at present more in conjunction with configuration or one-sided half pin configuration.
The basic structure that ring type triangle configuration hip joint rebuilds exter-nal fixer is 3-d modelling, and mechanical property is good, fixing strong, there is adjustability, adopt the draw point layout that full pin and half pin, multiple spot are multidirectional, muscle is worn flexibly, not in position of threading a needle, not fixing joint, portable propelling.Be applicable to the whole-course treatment of supracondylar fracture of the femur.
The operating procedure that drawing-off pressurization connecting rod ring type triangle configuration hip joint rebuilds external fixator is as follows:
1, the first osteotomy line is located and is threaded a needle: patient is flat sleeping, makes the maximum adduction of hip, osteotomy line position ischial tuberosity and femur intersection, determines with X line perspective.Afterwards in the first bone section, wear parallel with pelvic planes is put two piece of 5 mm screw needle and is fixed, and notes making to turn in femur when threading a needle.
2, Wicresoft's boring osteotomy: row 1cm skin incision, inserts osteotomy device sleeve pipe, carries out pin hole osteotomy.
3, use osteotome to carry out osteotomy, after knochenbruch, make distal femur abduction, and inwardly displaced 1/2.
4, overall external fixator is installed: connected by external fixator distance end.
5, the second osteotomy line location, place and osteotomy: second place's osteotomy line, the i.e. vertical line of pelvis parallel lines and first place's osteotomy point---with the CORA center of tibia mechanical axis.And carry out arc Wicresoft boring osteotomy.Second bone section near-end wears two pieces of 5mm spiral half pins, is connected and fixed with the first bone section, maintains the position of abduction, and fixes with apparatus.And place one piece of full pin of 2.5mm in distal femur, two pieces of 5mm screw thread half pins.
6, lengthening gradually, finally realizes hip joint and rebuilds.
Shown in Fig. 9 ~ 15, connecting rod 18 in described femur ring type triangle configuration exter-nal fixer adopts quick drawing-off bar, quick drawing-off bar includes threaded rod 18.1, interior bar cover 18.2 and outer bar cover 18.3, described threaded rod 18.1 is inserted in interior bar cover 18.2 from top to bottom, described interior bar cover 18.2 is inserted in outer bar cover 18.3 from top to bottom, and the lower end of described outer bar cover 18.3 is provided with the threaded connector 18.12 be connected with hole ring; Described threaded connector 18.12 is the internal thread holes being arranged on outer bar cover lower end;
The upper end of described interior bar cover 18.2 is provided with flanging 18.13, and be provided with pressure controller between the upper end of interior bar cover 18.2 and threaded rod 18.1, described pressure controller is by adjusting sleeve 18.4, Stress control cover 18.6 and Compress Spring 18.5 form, the upper end of described adjusting sleeve 18.4 is threaded with threaded rod 18.1, bottom and the Stress control of adjusting sleeve 18.4 overlap 18.6 and are threaded, described Stress control cover 18.6 is movably set on the interior bar cover 18.2 on the downside of flanging 18.12, described Compress Spring 18.5 is enclosed within the threaded rod 18.1 between flanging 18.13 that the upper end of adjusting sleeve 18.4 and interior bar overlap 18.2,
The medial wall, upper end of described outer bar cover 18.3 is provided with taper uncovered 18.7, the lateral wall, upper end of outer bar cover 18.3 is provided with external thread section 18.9, and the upper end of outer bar cover 18.3 and interior bar are provided with lock-on connection between overlapping 18.2, described lock-on connection is made up of cone shaped elastic circle 18.8 and locking nut 18.10, described locking nut 18.10 is threaded by external thread section 18.9 upper end of the cover of bar outside 18.3, described cone shaped elastic circle 18.8 is inserted in taper uncovered 18.7, be clipped in interior bar cover 18.2 and outer bar overlap between 18.3, and the upper end of cone shaped elastic circle 18.8 fixes on the upper end of locking nut 18.10,
Be provided with bar between the medial wall that the lateral wall, bottom of described interior bar cover 18.2 and outer bar overlap 18.3 and overlap pad 18.11, the medial surface of bar cover pad 18.11 is provided with union joint 18.19, described interior bar cover 18.2 is provided with the locating hole 18.20 corresponding with union joint 18.19, and bar cover pad 18.11 is fixed on interior bar cover 18.2 by union joint 18.19 is relative with locating hole 18.20;
The lower end of described outer bar cover 18.3 is provided with gimbal suspension, gimbal suspension is made up of Connection Block 18.18, hinged otic placode 18.17, middle pin 18.16, axle sleeve 18.15 and bearing pin 18.14, wherein hinged otic placode 18.17 is arranged on the lower end of outer bar cover 18.3, axle sleeve 18.15 and bearing pin 18.14 are articulated and connected on hinged otic placode 18.17 by middle pin 18.16, Connection Block 18.18 is articulated and connected again on bearing pin 18.14, and described threaded connector 18.12 is arranged on Connection Block 18.18.
Claims (10)
1. a tubulose drawing-off pressurization connecting rod control device, is characterized in that: be made up of pressurize connecting rod (1), steel needle fixing clamp (2), draw point (3) of drawing-off;
Described drawing-off pressurization connecting rod (1) by full thread connecting rod (5), at least one is placed on sleeve pipe (4) on full thread connecting rod (5), and is connected to nut (6) composition on the full thread connecting rod (5) at sleeve pipe (4) two ends;
Described steel needle fixing clamp (2) is connected in drawing-off pressurization connecting rod (1), and steel needle fixing clamp is made up of draw point pressure pad (9), screw pad (12), base (10), screw rod (11), top nut (13) and lower nut (14); Screw rod (11) is successively through the hole on draw point pressure pad (9), screw pad (12) and base (10), top nut (13) is connected with screw rod (11) by screw thread in draw point pressure pad (9) top, lower nut (14) is connected with screw rod (11) by screw thread below base, and the diameter of screw rod (11) is identical with the diameter of full thread connecting rod (5);
Described draw point pressure pad (9) center has without threaded interior hole, the reverse side of draw point pressure pad (9) is with a circle chimb, chimb with the contact surface of screw pad (12) on be carved with sawtooth corrugation (9.2), chimb is intervally distributed with draw point installing port (9.1) corresponding between two, the tail end of draw point (3) is through draw point installing port (9.1), and being clamped between draw point pressure pad (9) and screw pad (12), the tip of draw point (3) is connected on art bone (17);
Described screw pad (12) center has inner bolt hole;
(10) have without threaded perforations described base, and described base (10) is having the groove (10.1) of one or two clamping sleeve pipe (4) towards the one side of screw pad (12), form single cavity base or double flute base; The steel needle fixing clamp being provided with single cavity base forms single cavity steel needle fixing clamp (7), and the steel needle fixing clamp being provided with double flute base forms double flute steel needle fixing clamp (8).
2. tubulose drawing-off pressurization connecting rod control device according to claim 1, it is characterized in that: described steel needle fixing clamp (2) is connected on the sleeve pipe (4) of drawing-off pressurization connecting rod (1), or be connected directly between on the full thread connecting rod (5) of drawing-off pressurization connecting rod (1).
3. tubulose drawing-off pressurization connecting rod control device according to claim 1, is characterized in that: described full thread connecting rod (5) is external thread rod, and length is 150 ~ 300 mm;
Described sleeve pipe (4) is without female thread, and length is 120 ~ 250mm.
4. tubulose drawing-off pressurization connecting rod control device according to claim 1, is characterized in that: in two grooves on described double flute base, one is C shape groove, and another is U-shaped groove.
5. tubulose drawing-off according to claim 1 pressurization connecting rod control device, is characterized in that: described draw point (3) is screw thread half pin (21), without screw thread half pin or pin (22) entirely.
6. adopt the one-sided configuration exter-nal fixer of front boom that described in Claims 1 to 5 any one, tubulose drawing-off pressurization connecting rod control device is assembled into, it is characterized in that: this holder is made up of drawing-off pressurization connecting rod (1), at least four single cavity steel needle fixing clamps (7) and four draw points (3);
Described drawing-off pressurization connecting rod (1) by upper and lower two sleeve pipes (4), a full thread connecting rod (5), and is connected to nut (6) composition on the full thread connecting rod (5) at sleeve pipe (4) two ends;
Wherein two single cavity steel needle fixing clamps (7) are connected on the sleeve pipe (4) of drawing-off pressurization connecting rod (1) upside, and two other single cavity steel needle fixing clamp (7) is connected on the sleeve pipe (4) of drawing-off pressurization connecting rod (1) downside;
Wherein the tail end of two draw points (3) is fixed on two single cavity steel needle fixing clamps (7) of upside, and tip is connected on the art bone (17) above fracture; The tail end of other two draw points (3) is fixed on two single cavity steel needle fixing clamps (7) of downside, and tip is connected on the art bone (17) below fracture.
7. adopt the two one-sided configuration exter-nal fixer of bar of femur that described in Claims 1 to 5 any one, tubulose drawing-off pressurization connecting rod control device is assembled into, it is characterized in that: this holder is made up of two drawing-offs pressurization connecting rod (1), five double flute steel needle fixing clamps (8), a single cavity steel needle fixing clamp (7) and six roots of sensation draw points (3);
Described two drawing-offs pressurization connecting rod (1) parallel arranged Rhizoma Atractylodis Macrocephalae bone (17) side, each drawing-off pressurization connecting rod (1) by three, upper, middle and lower sleeve pipe (4), a full thread connecting rod (5), and is connected to nut (6) composition on the full thread connecting rod (5) at sleeve pipe (4) two ends;
One of them double flute steel needle fixing clamp (8) and a single cavity steel needle fixing clamp (7) are connected on the sleeve pipe (4) of drawing-off pressurization connecting rod (1) upside, and all the other four double flute steel needle fixing clamps (8) are connected on the sleeve pipe of drawing-off pressurization connecting rod (1) middle part and downside between two;
Wherein draw point (3) to be inclined upwardly setting according to fracture situation, and its tail end is fixed on single cavity steel needle fixing clamp (7), and tip is connected on art bone (17); Other five draw points and drawing-off are pressurizeed, and connecting rod (1) is vertical to be arranged, and its tail end is separately fixed on five double flute steel needle fixing clamps (8), and tip is connected on art bone (17).
8. adopt the near end of thighbone lever configuration exter-nal fixer that described in Claims 1 to 5 any one, tubulose drawing-off pressurization connecting rod control device is assembled into, it is characterized in that: this holder is made up of two drawing-offs pressurization connecting rod (1), eight single cavity steel needle fixing clamps (7) and four draw points (3);
Described two drawing-offs pressurization connecting rod (1) parallel arranged Rhizoma Atractylodis Macrocephalae bone (17) side, every root drawing-off pressurization connecting rod (1) by a sleeve pipe (4), a full thread connecting rod (5), and is connected to nut (6) composition on the full thread connecting rod (5) at sleeve pipe (4) two ends;
The sleeve pipe (4) of wherein drawing-off pressurization connecting rod (1) is connected with two single cavity steel needle fixing clamps (7), and is directly connected with the single cavity steel needle fixing clamp (7) that two are removed screw rod (11) on the full thread connecting rod (5) of sleeve pipe (4) below; The connected mode of another root drawing-off pressurization connecting rod (1) is identical with the former;
Wherein two draw points (3) to be inclined upwardly setting according to fracture situation, and its tail end is fixed on the single cavity steel needle fixing clamp (7) on two sleeve pipes (4) simultaneously, and tip is connected on art bone (17); Other two draw points and drawing-off are pressurizeed, and connecting rod (1) is vertical to be arranged, and its tail end is fixed on the upper single cavity steel needle fixing clamp (7) directly connected of two full thread connecting rods (5) simultaneously, and tip is connected on art bone (17).
9. adopt the ring type triangle configuration hip joint that described in Claims 1 to 5 any one, tubulose drawing-off pressurization connecting rod control device is assembled into rebuild an exter-nal fixer, it is characterized in that: this holder is combined with ring type, half-ring external fixator by two drawing-offs pressurization connecting rod (1), double flute steel needle fixing clamp (8), single cavity steel needle fixing clamp (7), screw thread half pin (21), full pin (22);
Described two drawing-offs pressurization connecting rod (1) are each by a full thread connecting rod (5), sleeve pipe (4), and are connected to nut (6) composition on the full thread connecting rod (5) at sleeve pipe (4) two ends; Two full thread connecting rod (5) bottoms are connected with the upper opening ring (15) of ring type, half-ring external fixator by universal joint (16), a described single cavity steel needle fixing clamp (7) is fixed on the sleeve pipe of drawing-off pressurization connecting rod (1) upside, screw thread half pin (21) tail end is connected with this single cavity steel needle fixing clamp (7), and the end of thread is fixed near end of thighbone; Two double flute steel needle fixing clamps (8) are connected on the sleeve pipe (4) at two drawing-off pressurization connecting rod (1) middle parts, and screw thread half pin (21) tail end is connected with double flute steel needle fixing clamp (8), and the end of thread is fixed in femoral shaft;
Described ring type, half-ring external fixator comprise upper and lower two and half hole rings or full hole ring, are connected with connecting rod (18) between upper opening ring (15) and lower hole ring (19); Upper opening ring (15) and drawing-off are pressurizeed and are connected with arc between connecting rod (1) and bend (20), upper opening ring (15) is connected with single cavity steel needle fixing clamp (7), screw thread half pin (21) tail end and this single cavity steel needle fixing clamp (7) are fixed, and the end of thread is fixed in femoral shaft; Lower hole ring (19) is connected with screw thread half pin (21) and full pin (22), full pin is through distal femur, and the end of thread and the distal femur of screw thread half pin are fixed.
10. ring type triangle configuration hip joint according to claim 9 rebuilds exter-nal fixer, it is characterized in that: described connecting rod (18) adopts quick drawing-off bar, quick drawing-off bar includes threaded rod (18.1), interior bar cover (18.2) and outer bar cover (18.3), described threaded rod (18.1) is inserted in interior bar cover (18.2) from top to bottom, described interior bar cover (18.2) is inserted in outer bar cover (18.3) from top to bottom, and the lower end of described outer bar cover (18.3) is provided with the threaded connector (18.12) be connected with hole ring; Described threaded connector (18.12) is the internal thread hole being arranged on outer bar cover lower end;
The upper end of described interior bar cover (18.2) is provided with flanging (18.13), and be provided with pressure controller between the upper end of interior bar cover (18.2) and threaded rod (18.1), described pressure controller is by adjusting sleeve (18.4), Stress control cover (18.6) and Compress Spring (18.5) composition, the upper end of described adjusting sleeve (18.4) is threaded with threaded rod (18.1), the bottom of adjusting sleeve (18.4) is threaded with Stress control cover (18.6), described Stress control cover (18.6) is movably set on the interior bar cover (18.2) of flanging (18.12) downside, described Compress Spring (18.5) is enclosed within the threaded rod (18.1) between the upper end of adjusting sleeve (18.4) and the flanging (18.13) of interior bar cover (18.2),
The medial wall, upper end of described outer bar cover (18.3) is provided with taper uncovered (18.7), the lateral wall, upper end of outer bar cover (18.3) is provided with external thread section (18.9), and be provided with lock-on connection between the upper end of outer bar cover (18.3) and interior bar cover (18.2), described lock-on connection is made up of cone shaped elastic circle (18.8) and locking nut (18.10), described locking nut (18.10) is threaded by external thread section (18.9) upper end of bar cover (18.3) outside, described cone shaped elastic circle (18.8) is inserted in taper uncovered (18.7), be clipped between interior bar cover (18.2) and outer bar cover (18.3), and the upper end of cone shaped elastic circle (18.8) fixes on the upper end of locking nut (18.10),
Be provided with bar between the lateral wall, bottom of described interior bar cover (18.2) and the medial wall of outer bar cover (18.3) and overlap pad (18.11), the medial surface of bar cover pad (18.11) is provided with union joint (18.19), described interior bar cover (18.2) is provided with the locating hole (18.20) corresponding with union joint (18.19), and bar cover pad (18.11) is fixed on interior bar cover (18.2) by union joint (18.19) is relative with locating hole (18.20);
The lower end of described outer bar cover (18.3) is provided with gimbal suspension, gimbal suspension is by Connection Block (18.18), hinged otic placode (18.17), middle pin (18.16), axle sleeve (18.15) and bearing pin (18.14) composition, wherein hinged otic placode (18.17) is arranged on the lower end of outer bar cover (18.3), axle sleeve (18.15) and bearing pin (18.14) are articulated and connected on hinged otic placode (18.17) by middle pin (18.16), Connection Block (18.18) is articulated and connected again on bearing pin (18.14), described threaded connector (18.12) is arranged on Connection Block (18.18).
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| CN201310400810.1A CN103417280B (en) | 2013-09-06 | 2013-09-06 | Tubular traction pressurization connecting rod control device and outer-bone fixing device |
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| CN105167828A (en) * | 2015-08-28 | 2015-12-23 | 张家港市亚堤仕医疗咨询管理有限公司 | Transverse orthoterion |
| CN106420020A (en) * | 2016-08-31 | 2017-02-22 | 天津正天医疗器械有限公司 | External screw fixing device used after tibial osteotomy |
| CN106618698B (en) * | 2016-10-27 | 2019-02-19 | 北京工业大学 | A kind of seven freedom shin bone unilateral external fixator |
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| EP1351613B1 (en) * | 2001-01-04 | 2006-03-08 | Milorad Mitkovic | External skeletal fixator |
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