A kind of Easy opened breastbone closing fixer external memberTechnical field
The present invention relates to a kind of Easy opened breastbone closing fixer external members.
Background technique
Open chest surgery is needed entire sternal incisions, is using entire by the conventional method that breastbone is closed at the end of operationBreastbone is fixed with wire binding up and down, and the breastbone steel wire of left and right incision is taken out tightly by the suture needle of operative doctor steel wire of ining succession,It is fixed after so that the breastbone cut is got up.There are following deficiencies for traditional fixation with steel wire breastbone method: 1, fixation is elasticBe difficult hold, uniformly.2, it is easy to produce cutting of the steel wire to breastbone, causes breastbone to split, brings adverse consequences.3, wearing steel wire hasCertain difficulty.
Based on this, breastbone closing fixer gradually obtains the favor of more and more doctors, current breastbone closing fixerWith male fixing piece and female fixing piece, the inside of the outside of male fixing piece and female fixing piece is equipped with mutually matched sawtooth, and public affairs are solidPart is determined equipped with locking slot, the interior rotatable locking wheel of setting of locking slot.By rotating locking wheel, the elasticity of public fixing piece is utilizedIt deforms to make male fixing piece and female fixing piece mutually lock or be detached from.But find in practical applications, since breastbone healsIt takes a long time, it is therefore possible to cause public fixing piece to generate plastic deformation, eventually leads to breastbone closing fixer and be difficult toThe case where dismounting, occurs.
Summary of the invention
The object of the present invention is to provide a kind of easy to operate, quick Easy opened breastbone closing fixer sets of convenient disassemblyPart.
Realizing the technical solution of the object of the invention is: a kind of Easy opened breastbone closing fixer external member, including breastboneFixator, and the extracting tool for dismantling breastbone closing fixer；The breastbone closing fixer includes locking wheel, public solidDetermine part and female fixing piece；It is described public affairs fixing piece include elastic plug and one end of elastic plug is set and is extended downwardly firstClaw type hooks plate, and the middle part of elastic plug is equipped with locking slot；Another end opening of the locking slot in elastic plug, and open endFace is equipped with guide groove；The middle part of the locking slot is equipped with the locking hole that can be matched with locking wheel；The two of the public affairs fixing pieceSide is equipped with to the first claw type and hooks inclined first helical teeth in plate one end；First claw type hooks the top of plate and the connection of elastic plugPlace is equipped with and pushes away slot；Mother's fixing piece includes that socket is hooked with the second claw type that one end bottom of socket is arranged in and extends downwardlyPlate；The socket is equipped with the slot matched with elastic plug, and the two sides of slot are equipped with to the second claw type and hook the inclination of plate one endThe second helical teeth.
Fin is equipped with below first helical teeth of the elastic plug of the public fixing piece of the breastbone closing fixer；It is described female solidThe lower section for determining the second helical teeth of the socket of part is equipped with the dovetail groove matched with fin.
The extracting tool includes main body guide rod and movable push bar；One end end of the main body guide rod is equipped with can be withThe guide pad that the guide groove of public fixing piece matches；One end of the movable push bar is slidably connected with main body guide rod, the other endEnd be equipped with can be with the pushing block for pushing away slot and matching of public fixing piece.
The two sidewalls of the guide groove of the elastic plug of the public fixing piece of the breastbone closing fixer are inclined-plane；The disassemblyThe two sides of the outer end of the guide pad of the main body guide rod of tool are equipped with inclined-plane.
The extracting tool further includes the second driving mechanism for driving movable push bar to slide on main body guide rod.
Second driving mechanism of the extracting tool includes the second rack gear, second gear and the second knob；Second toothItem is arranged on main body guide rod；The second gear is rotatably arranged on movable push bar, and is engaged with the second rack gear；DescribedTwo knobs are fixed in the shaft of second gear.
The extracting tool further includes the second non-return mechanism；Second non-return mechanism includes the second non-return clamp and secondTorsional spring；The middle part of the second non-return clamp and movable push bar are hinged；One end of second torsional spring is against on movable push bar, separatelyOne end resists one end of the second non-return clamp, and the other end of the second non-return clamp is equipped with the hook part that can cooperate with the second rack gear.
Using above-mentioned technical proposal, the present invention has the following beneficial effects: the breastbone closing fixer that (1) is of the inventionMale fixing piece and female fixing piece fixation is realized by the engagement of the first helical teeth and the second helical teeth, the engagement stabilization of helical teeth canIt leans on；When dismounting, the distance between male fixing piece and female fixing piece are reduced by removal tool, the first helical teeth can be by second at this timeHelical teeth squeezes, and releases the meshing state between the first helical teeth and the second helical teeth, solid so as to effectively remove breastboneDetermine device, simply, easily and fast, avoids on business fixing piece generation plastic deformation and breastbone closing fixer is caused to remove difficulty.
(2) fin of the male fixing piece of breastbone closing fixer of the invention is matched with the dovetail groove of female fixing piece, is madeThe upper and lower position for obtaining male fixing piece and female fixing piece is also fixed, can be more stable after keeping breastbone closing fixer fixed.
(3) two sidewalls of the guide groove of the elastic plug of the public fixing piece of breastbone closing fixer of the invention are inclined-plane,The two sides of the outer end of the guide pad of the main body guide rod of extracting tool are equipped with inclined-plane, can play better guiding role.
(4) extracting tool of the invention is provided with the second driving mechanism to drive movable push bar sliding on main body guide rodIt is dynamic, make to operate more convenient.
(5) extracting tool of the invention is provided with the second non-return mechanism to prevent movable push bar from retracting, when can be reduced disassemblyBetween, and further facilitate operation.
Detailed description of the invention
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawingThe present invention is described in further detail, wherein
Fig. 1 is the structural schematic diagram of breastbone closing fixer of the invention.
Fig. 2 is the structural schematic diagram of the public fixing piece of breastbone closing fixer of the invention.
Fig. 3 is the structural schematic diagram of female fixing piece of breastbone closing fixer of the invention.
Fig. 4 is the structural schematic diagram that extracting tool of the invention is matched with breastbone closing fixer.
Fig. 5 is the structural schematic diagram of extracting tool of the invention.
Fig. 6 is the top view of extracting tool of the invention.
Specific embodiment
(embodiment 1)
See Fig. 1 to Fig. 6, the Easy opened breastbone closing fixer external member of the present embodiment, including breastbone closing fixer 1, withAnd the extracting tool 3 for dismantling breastbone closing fixer 1.
Breastbone closing fixer 1 includes locking wheel, male fixing piece 11 and female fixing piece 12.Public fixing piece 11 includes that elasticity is insertedFirst 111 hook plate 112 with the first claw type that one end of elastic plug 111 is arranged in and extends downwardly, and the middle part of elastic plug 111 is setThere is locking slot 1111.Locking slot 1111 elastic plug 111 another end opening, and open end be equipped with guide groove1112.The middle part of locking slot 1111 is equipped with the locking hole 1113 that can be matched with locking wheel.The two sides of public fixing piece 11 be equipped with toFirst claw type hooks inclined first helical teeth 1114 in 112 one end of plate.First claw type hooks the top of plate 112 and the company of elastic plug 111The place of connecing is equipped with and pushes away slot 1121.Female fixing piece 12 include socket 121 and one end bottom of socket 121 is set and is extended downwardly theTwo claw types hook plate 122.Socket 121 is equipped with the slot 1211 matched with elastic plug 111, and the two sides of slot 1211 are equipped withTo.Second claw type hooks inclined second helical teeth 1212 in 122 one end of plate.The elasticity of the public fixing piece 11 of breastbone closing fixer 1 is insertedFin 1115 is equipped with below first 111 the first helical teeth 1114.The lower section of second helical teeth 1212 of the socket 121 of female fixing piece 12 is setThere is the dovetail groove 1213 matched with fin 1115.Extracting tool 3 includes main body guide rod 31 and movable push bar 32.Main body guidingOne end end of bar 31 is equipped with the guide pad 311 that can be matched with the guide groove 1112 of public fixing piece 11.The one of movable push bar 32End is slidably connected with main body guide rod 31, and the end of the other end is equipped with can be with the pushing block for pushing away slot 1121 and matching of public fixing piece 11321.The two sidewalls of the guide groove 1112 of the elastic plug 111 of the public fixing piece 11 of breastbone closing fixer 1 are inclined-plane.Dismantle workThe two sides of the outer end of the guide pad 11 of the main body guide rod 1 of tool 3 are equipped with inclined-plane.Extracting tool 3 further includes driving movable push bar32 the second driving mechanisms 33 slided on main body guide rod 31.Second driving mechanism 33 includes the second rack gear 331, second gearWith the second knob 332.Second rack gear 331 is arranged on main body guide rod 31.Second gear is rotatably arranged on movable push bar 32,And it is engaged with the second rack gear 331.Second knob 332 is fixed in the shaft of second gear.Extracting tool 3 further includes the second non-returnMechanism 34.Second non-return mechanism 34 includes the second non-return clamp 341 and the second torsional spring.The middle part of second non-return clamp 341 and workDynamic push rod 32 is hinged.One end of second torsional spring is against on movable push bar 32, and the other end resists one end of the second non-return clamp 341,The other end of second non-return clamp 341 is equipped with the hook part that can cooperate with the second rack gear 331.
When disassembly, extruding of the locking wheel of breastbone closing fixer 1 to public fixing piece 11 is first released.If public fixing piece 11First helical teeth 1114 can be automatically disengaged from the second helical teeth 1212 of female fixing piece 12 by elasticity, then directly remove public fixing piece11 and female fixing piece 12.If public fixing piece 11 produces plastic deformation, by the guide pad of the main body guide rod 31 of extracting tool 3311 match with the guide groove 1112 of public fixing piece 11, and the pushing block of movable push bar 32 321 and public fixing piece 11 are pushed away slot1121 match；Then it drives movable push bar 32 to move on main body guide rod 31 by the second driving mechanism 33, makes public fixationThe distance between part 11 and female fixing piece 12 further decrease, and the first helical teeth 1114 of male fixing piece 11 can be fixed by mother at this timeSecond helical teeth 1212 of part 12 squeezes, and releases the meshing state between the first helical teeth 1114 and the second helical teeth 1212, to haveThe male fixing piece 11 of the dismounting of effect and female fixing piece 12.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effectsIt describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is allWithin the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the inventionWithin the scope of shield.