CN111166399A - Distraction device for orthopedic surgery - Google Patents
Distraction device for orthopedic surgery Download PDFInfo
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- CN111166399A CN111166399A CN202010010900.XA CN202010010900A CN111166399A CN 111166399 A CN111166399 A CN 111166399A CN 202010010900 A CN202010010900 A CN 202010010900A CN 111166399 A CN111166399 A CN 111166399A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0206—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors with antagonistic arms as supports for retractor elements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
- A61B2017/00836—Material properties corrosion-resistant
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Abstract
The invention relates to the field of medical instruments, in particular to a distraction device for orthopedic surgery, which comprises a hand piece, wherein a rectangular slide way is arranged in the middle of the hand piece along the axis of the hand piece, rectangular slide grooves are formed in the inner walls of two sides of the rectangular slide way, limiting racks are arranged on the upper parts of the inner side walls of the rectangular slide grooves, a key assembly is arranged in the rectangular slide way in a sliding manner, the key assembly comprises a sliding piece, a key block in the middle of the sliding piece in clearance fit and a limiting plate arranged at the bottom end of the key block, matching racks meshed with the limiting racks are arranged on the left side and the right side of the limiting plate, a reset spring is connected between the bottom side of the limiting plate and the bottom wall of; the invention has simple structure and convenient use, the two groups of opening plates are opened by pressing the key block and moving the sliding part, and the inconvenience of opening force of the two groups of forceps arms is realized by loosening the key block, thereby realizing quick opening and fixing and improving the operation efficiency.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a distraction device for orthopedic surgery.
Background
When the orthopedic surgery is used for treatment, a doctor usually cuts a wound and then uses a spreader to spread the wound for treatment, so that the doctor can perform the operation on the bone wound.
But after the ordinary distractor is distracted, the distractor needs to be distracted by one hand, the screw rod fixing assembly is adjusted by the other hand, the distraction angle of the distractor is fixed, the operation is complex, the distractor is easy to break away from a wound, and the distractor cannot be rapidly distracted and fixed, so that the operation efficiency is reduced.
Disclosure of Invention
Solves the technical problem
Aiming at the defects in the prior art, the invention provides the distraction device for the orthopedic surgery, which can effectively solve the problem that after the common distracter in the prior art is distracted, the distraction device needs to be distracted by one hand, and the screw rod fixing assembly needs to be adjusted by the other hand to fix the distraction angle of the distracter, so that the operation is complex, the distracter is easy to separate from a wound, and the distraction device cannot be quickly distracted and fixed, so that the surgery efficiency is reduced.
Technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
a distraction device for orthopedic surgery comprises a hand piece, wherein a rectangular slide way is arranged in the middle of the hand piece along the axis of the hand piece, rectangular slide grooves are respectively arranged on the inner walls of the two sides of the rectangular slide way, limiting racks are respectively arranged on the upper parts of the inner side walls of the rectangular slide grooves, a key assembly is arranged in the rectangular slide way and comprises a sliding piece, a key block which is in clearance fit in the middle of the sliding piece and a limiting plate arranged at the bottom end of the key block, the left side and the right side of the limiting plate are respectively provided with a matching rack which is meshed with the limiting racks, a reset spring is connected between the bottom side of the limiting plate and the bottom wall of an inner cavity in the middle of the sliding piece, the bottom side of the sliding piece is rotationally connected with two groups of bilateral symmetric connecting pieces through a first shaft pin, the rear ends of the connecting pieces are rotationally connected through, the rear ends of the forceps arms are connected with opening rods through adjusting assemblies, and the side walls of the opening rods are provided with opening plates.
Furthermore, the circumferential side wall of the front part of the hand piece is provided with anti-slip lines, so that the hand piece can be conveniently held by a single hand.
Furthermore, the slider is arranged to be in a rectangular structure matched with the rectangular slide way, the left side and the right side of the slider are provided with rectangular sliding blocks in sliding fit with the rectangular sliding grooves, the middle parts of the rectangular sliding blocks are provided with transverse channels communicated with the inner cavity of the slider, two ends of the limiting plate respectively penetrate through and penetrate out of the transverse channels on the same side of the limiting plate, the upper side of the middle part of the slider is provided with a longitudinal channel communicated with the inner cavity of the slider, and the longitudinal channel is in clearance fit with the key blocks.
Furthermore, the inner side wall has seted up spacing spout about the vertical passageway, the button piece all is provided with the spacing slider with spacing spout complex on the left and right sides, improves the stability that the button piece reciprocated.
Furthermore, the upper end of the key block is provided with a key plate with anti-skid grains, so that the key block is convenient to press and move.
Furthermore, the adjusting part comprises an adjusting screw and an adjusting block fixed at the middle part of the adjusting screw, a notch is formed in the rear end of the clamp arm, the adjusting screw penetrates into the notch from one side of the notch and penetrates out of the other side of the notch in a spiral mode, the upper end of the opening rod is fixedly connected with the adjusting block, the adjusting screw can be rotated respectively according to specific opening angles before use, the adjusting block is driven to rotate, and therefore different included angles of the opening plate and the clamp arm are achieved, and the opening effect is improved.
Furthermore, the opening rod and the opening plate are both of metal structures, and the outer surfaces of the opening rod and the opening plate are provided with anti-aging protective layers, wherein the anti-aging protective layers are formed by coating anti-aging paint.
Furthermore, the anti-aging coating is composed of the following raw material components in parts by weight: 85 parts of modified water-based epoxy resin emulsion, 9 parts of zirconium phosphate, 9 parts of ultramarine, 5 parts of polyhexamethylene guanidine, 4.3 parts of barium petroleum sulfonate, 4.6 parts of lanoline magnesium soap, 4.0 parts of dodecenylsuccinic acid, 5.3 parts of glass flake, 11 parts of vinyl bis stearamide, 3.2 parts of glycerin monostearate, 2.0 parts of emulsifier, 2.0 parts of dispersant, 1.6 parts of film-forming assistant, 1.5 parts of flatting agent, 1.5 parts of defoaming agent, 1.6 parts of surfactant and 23 parts of deionized water;
the preparation method of the modified waterborne epoxy resin emulsion comprises the following steps:
a. transferring the aqueous epoxy resin emulsion into a reaction kettle, adding a proper amount of glyceryl monostearate and deionized water into the reaction kettle, setting the temperature in the reaction kettle to be 75 ℃, stirring for 5min at a speed of 420r/min by a stirrer, premixing toluene and epoxy resin, adding gamma-methacryloxypropyltrimethylsilane into the reaction kettle at the temperature, mixing and stirring for 10min at a speed of 200r/min, setting the temperature in the reaction kettle to be 95 ℃ after mixing, reacting for 10h at the temperature, and marking the obtained mixture as a mixed component in the reaction kettle after the reaction is finished;
b. cooling the mixed components in the reaction kettle to room temperature under natural conditions, and then adjusting the pH of the mixed components to 8.0 by using an ammonia water solution with the concentration of 6.0-8.0%, and marking the obtained mixture as a mixed solution;
c. heating the temperature of the mixed liquid in the reaction kettle to 80 ℃, adding 2-hydroxy-4-n-octoxy benzophenone, dibutyltin dilaurate and an initiator solution into the reaction kettle, and carrying out heat preservation reaction for 6 hours at the temperature of 80 ℃; and naturally cooling to room temperature, filtering and discharging to obtain the modified waterborne epoxy resin emulsion.
Furthermore, the emulsifier is monoglyceride fatty acid glyceride; the dispersant is glyceryl tristearate; the film-forming auxiliary agent is propylene glycol methyl ether acetate; the leveling agent is polymethyl alkyl siloxane; the defoaming agent is an organic silicon defoaming agent BYK-018; the surfactant is fatty acid sorbitan.
Advantageous effects
Compared with the known public technology, the technical scheme provided by the invention at least has the following beneficial effects: the invention has simple structure and convenient use, the two groups of opening plates are opened by pressing the key block and moving the sliding part, and the inconvenience of opening force of the two groups of forceps arms is realized by loosening the key block, thereby realizing quick opening and fixing and improving the operation efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic view of a top down configuration of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic cross-sectional view at A of the present invention;
FIG. 4 is an enlarged view of the structure at B of the present invention;
FIG. 5 is a schematic view of a slider structure according to the present invention;
the reference numerals in the drawings denote: 1-a hand piece; 2-a rectangular slideway; 3-a rectangular chute; 4-a limit rack; 5-a slide; 6-a key block; 7-a limiting plate; 8-a return spring; 9-a first axle pin; 10-a connector; 11-a tong arm; 12-a third axle pin; 13-an adaptor; 14-an opening bar; 15-opening the plate; 16-a limiting slide block; 17-a keypad; 18-adjusting the screw; 19-adjusting block.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be further described with reference to the following examples.
Example one
The distraction device for orthopedic surgery of the embodiment is described with reference to fig. 1 to 5: the hand-held piece comprises a hand-held piece 1, wherein a rectangular slideway 2 is arranged in the middle of the hand-held piece 1 along the axis, rectangular sliding grooves 3 are respectively arranged on the inner walls of two sides of the rectangular slideway 2, a limit rack 4 is respectively arranged on the upper part of the inner side wall of the rectangular slideway 3, a key assembly is arranged in the rectangular slideway 2 in a sliding manner, the key assembly comprises a sliding piece 5, a key block 6 in the middle of the sliding piece 5 in a clearance fit manner and a limit plate 7 arranged at the bottom end of the key block 6, the left side and the right side of the limit plate 7 are respectively provided with a matching rack meshed with the limit rack 4, a reset spring 8 is connected between the bottom side of the limit plate 7 and the bottom wall of the inner cavity in the middle of the sliding piece 5, two groups of left-right symmetrical connecting pieces 10 are rotatably connected with each other through a first shaft pin 9 at the bottom side of the sliding piece 5, clamp arms 11, the rear end of the forceps arm 11 is connected with an opening rod 14 through an adjusting component, and the side wall of the opening rod 14 is provided with an opening plate 15.
Wherein, the circumferential side wall of the front part of the hand piece 1 is provided with anti-skid lines; the sliding part 5 is arranged in a rectangular structure matched with the rectangular slideway 2, the left side and the right side of the sliding part 5 are provided with rectangular sliding blocks in sliding fit with the rectangular sliding chutes 3, the middle parts of the rectangular sliding blocks are respectively provided with a transverse channel communicated with the inner cavity of the sliding part 5, two ends of the limiting plate 7 respectively penetrate through and penetrate out of the transverse channels on the same side of the limiting plate, the upper side of the middle part of the sliding part 5 is provided with a longitudinal channel communicated with the inner cavity of the sliding part 5, and the longitudinal channel is in clearance; the left and right inner side walls of the longitudinal channel are provided with limiting sliding grooves, and the left and right sides of the key block 6 are provided with limiting sliding blocks 16 matched with the limiting sliding grooves; the upper end of the key block 6 is provided with a key board 17 with anti-skid lines; the adjusting assembly comprises an adjusting screw rod 18 and an adjusting block 19 fixed in the middle of the adjusting screw rod 18, a notch is formed in the rear end of the clamp arm 11, the adjusting screw rod 18 penetrates into the notch from one side of the notch in a spiral mode and penetrates out of the other side of the notch in a spiral mode, and the upper end of the opening rod 14 is fixedly connected with the adjusting block 19.
When the medical instrument is used, the front end of the hand-held piece 1 is held by a single hand, the opening plate 15 is placed at a wound, the thumb of the hand-held piece 1 presses the key block 6, the limiting plate 7 moves downwards and compresses the return spring 8, and then the matching racks on the two sides of the limiting plate 7 are separated from the limiting rack 4, so that the sliding piece 5 can slide along the rectangular slide way 2; then, the thumb presses the key block 6 and moves the key block 6 along the direction of the rectangular slideway 2, the first shaft pin 9 is connected with the connecting piece 10 in a rotating way, the connecting piece 10 is respectively connected with the front ends of the forceps arms 11 in a rotating way, and the third shaft pin 12 is connected with the rear end of the hand-held piece 1 in a rotating way through the adapter piece 13, so that the rear ends of the two groups of forceps arms 11 are mutually opened, the two groups of opening plates 15 are driven to be opened, and the opening of the wound is realized; after strutting, loosen button block 6, then reset spring 8 resets, drives limiting plate 7 and shifts up to make the cooperation rack of the 7 left and right sides of limiting plate all with spacing rack 4 meshing, realize slider 5 and handheld 1's fixed connection, thereby it is inconvenient to keep two sets of tong arms 11 to open the dynamics, realizes that the wound struts fixedly fast, and then improves operation efficiency.
According to the record, the device is simple in structure and convenient to use, the two groups of opening plates 15 are opened by pressing the key block 6 and moving the sliding part 5, and the inconvenience of opening force of the two groups of forceps arms 11 is realized by loosening the key block 6, so that the quick opening fixation is realized, and the operation efficiency is improved.
Example two
On the basis of the structure of the device according to the first embodiment, the opening rod 14 and the opening plate 15 are both of metal structures, and the outer surfaces of the opening rod 14 and the opening plate 15 are both provided with anti-aging protective layers (not shown in the figure), and the anti-aging protective layers are formed by coating anti-aging coatings, so that the anti-aging performance and the corrosion resistance of the opening rod 14 and the opening plate 15 are improved, and the service life of relevant key components is prolonged.
Specifically, the anti-aging coating is composed of the following raw material components in parts by weight: 85 parts of modified water-based epoxy resin emulsion, 9 parts of zirconium phosphate, 9 parts of ultramarine, 5 parts of polyhexamethylene guanidine, 4.3 parts of barium petroleum sulfonate, 4.6 parts of lanoline magnesium soap, 4.0 parts of dodecenylsuccinic acid, 5.3 parts of glass flake, 11 parts of vinyl bis stearamide, 3.2 parts of glycerin monostearate, 2.0 parts of emulsifier, 2.0 parts of dispersant, 1.6 parts of film-forming assistant, 1.5 parts of flatting agent, 1.5 parts of defoaming agent, 1.6 parts of surfactant and 23 parts of deionized water.
The preparation method of the modified waterborne epoxy resin emulsion comprises the following steps:
a. transferring the aqueous epoxy resin emulsion into a reaction kettle, adding a proper amount of glyceryl monostearate and deionized water into the reaction kettle, setting the temperature in the reaction kettle to be 75 ℃, stirring for 5min at a speed of 420r/min by a stirrer, premixing toluene and epoxy resin, adding gamma-methacryloxypropyltrimethylsilane into the reaction kettle at the temperature, mixing and stirring for 10min at a speed of 200r/min, setting the temperature in the reaction kettle to be 95 ℃ after mixing, reacting for 10h at the temperature, and marking the obtained mixture as a mixed component in the reaction kettle after the reaction is finished;
b. cooling the mixed components in the reaction kettle to room temperature under natural conditions, and then adjusting the pH of the mixed components to 8.0 by using an ammonia water solution with the concentration of 6.0-8.0%, and marking the obtained mixture as a mixed solution;
c. heating the temperature of the mixed liquid in the reaction kettle to 80 ℃, adding 2-hydroxy-4-n-octoxy benzophenone, dibutyltin dilaurate and an initiator solution into the reaction kettle, and carrying out heat preservation reaction for 6 hours at the temperature of 80 ℃; and naturally cooling to room temperature, filtering and discharging to obtain the modified waterborne epoxy resin emulsion.
In the embodiment, the emulsifier is monoglyceride fatty acid glyceride, the dispersant is glyceryl tristearate, the film-forming aid is propylene glycol methyl ether acetate, the leveling agent is polymethyl alkyl siloxane, the defoaming agent is an organic silicon defoaming agent BYK-018, and the surfactant is sorbitan fatty acid.
The preparation method of the anti-aging coating comprises the following steps:
s1, accurately weighing the raw materials, respectively placing the solid raw materials into a grinding machine for grinding, and then sieving the solid raw materials by a 200-mesh sieve to obtain fine powder of the solid raw materials; storing and standby;
s2, adding the modified waterborne epoxy resin emulsion into a reaction kettle, setting the temperature of the reaction kettle to 80 ℃, and then adding a surfactant, a dispersant and an emulsifier into the reaction kettle; after uniformly mixing and stirring, adding the fine powder of each solid raw material obtained in the step S1 into a reaction kettle while stirring, mixing and stirring at the speed of 360r/min for 10min, then adding all the rest raw materials into the reaction kettle, and uniformly mixing and stirring at the speed of 420r/min, wherein the mixture obtained in the reaction kettle is marked as a mixed component;
s3, measuring the viscosity value of the mixed component obtained in the step S2 by a 4-cup coating measurement method, ensuring that the viscosity of the mixed component is within the range of 140S, and marking the obtained mixed component as a crude coating product;
s4, filtering the coating crude product obtained in the step S3 by using a fine mesh filter screen, then placing the product into a reaction kettle, setting the temperature in the reaction kettle to be 80 ℃, and then carrying out ultrasonic vibration treatment by using an ultrasonic vibration rod at the frequency of 35KHz until bubbles in the coating crude product are sufficiently expelled out;
and S5, detecting the physical and chemical properties of the coating in the S4, and packaging after the coating is detected to be qualified to obtain the finished product of the anti-aging coating for the medical instrument.
After the finished product of the anti-aging coating is obtained, an anti-aging protective layer can be formed on the opening rod 14 and the opening plate 15 through the existing coating process, the thickness of the anti-aging protective layer can be 110-130 μm, for example, the anti-aging performance and the corrosion resistance of the opening rod 14 and the opening plate 15 are improved, and the reason is that:
firstly, the anti-aging coating takes modified water-based epoxy resin emulsion as a raw material for preparing the coating, and the water-based epoxy resin emulsion is chemically modified by gamma-methacryloxypropyltrimethylsilane and 2-hydroxy-4-n-octoxybenzophenone; under the action of gamma-methacryloxypropyltrimethylsilane, the epoxy resin and the 2-hydroxy-4-n-octoxybenzophenone are indirectly connected by chemical bonds, so that the modified waterborne epoxy resin emulsion has good ultraviolet resistance, and the aging resistance of the coating is improved. Moreover, the glass flakes and the 2-hydroxy-4-n-octoxy benzophenone are mutually cooperated, so that the thermal expansion coefficient and the bonding thermal stress of the coating prepared by the invention are relatively small, and the phenomenon of 'peeling' of the coating caused by heating is obviously improved.
Secondly, the anti-aging coating selects the vinyl bis-stearamide, the ultramarine blue and the zirconium phosphate as raw materials for preparing the coating, wherein the vinyl bis-stearamide has strong affinity to the ultramarine blue and the zirconium phosphate, and polar groups in molecules of the vinyl bis-stearamide firmly adsorb the ultramarine blue and the zirconium phosphate, so that the polar groups are firmly adhered to the surfaces of the ultramarine blue and the zirconium phosphate. And the carbon-hydrogen bond can directionally extend into the external medium to extend, so that the interfacial tension between the surfaces of the ultramarine blue and the zirconium phosphate and the external medium is reduced, the wettability of the ultramarine blue and the zirconium phosphate is obviously improved, the ultramarine blue and the zirconium phosphate can be more uniformly mixed in the coating, and the performance of the prepared coating is ensured. Furthermore, the combination of ultramarine and zirconium phosphate improves the corrosion resistance of the coating obviously.
Thirdly, the anti-aging coating adopts barium petroleum sulfonate, lanolin magnesium soap, dodecenylsuccinic acid and polyhexamethylene guanidine which are matched according to a certain proportion, so that the anti-rust performance and the wear resistance of the prepared coating can be obviously improved, and the service life of the coating is correspondingly prolonged.
To confirm the excellent properties of the anti-aging coatings, the properties of the commercially available anti-aging coatings (comparative example) from Shanghai paint company and the anti-aging coating prepared in example 2 were tested, respectively, and the data are shown in the following table:
(Note: 1, abrasion resistance of the coating material prepared in example 2 of the present invention was measured in accordance with GB 1768. 2, and heat resistance of the coating material prepared in example 2 of the present invention was measured in accordance with Q/Ez 159-2003.)
As can be seen from the data in the table above, the anti-aging coating prepared by the embodiment has better anti-aging performance, corrosion resistance, high temperature resistance, wear resistance and adhesion performance than the comparative examples. The coating prepared by the embodiment has better integral performance than a comparative example, and can effectively improve the ageing resistance and the corrosion resistance of the opening rod 14 and the opening plate 15.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (9)
1. The utility model provides an orthopedic surgery is with strutting device which characterized in that: comprises a hand piece (1), a rectangular slide way (2) is arranged in the middle of the hand piece (1) along the axis of the hand piece, rectangular slide grooves (3) are arranged on the inner walls of the two sides of the rectangular slide way (2), limiting racks (4) are arranged on the upper portions of the inner side walls of the rectangular slide grooves (3), a key assembly is arranged in the rectangular slide way (2) in a sliding manner and comprises a sliding piece (5), a key block (6) in the middle of the sliding piece (5) in a clearance fit manner and a limiting plate (7) arranged at the bottom end of the key block (6), matching racks meshed with the limiting racks (4) are arranged on the left side and the right side of the limiting plate (7), a reset spring (8) is connected between the bottom side of the limiting plate (7) and the bottom wall of an inner cavity in the middle of the sliding piece (5), two groups of left and right symmetrical connecting pieces (10) are rotationally connected through a first shaft pin, two sets of tong arm (11) intercrossing department rotates through third pivot (12) to be connected, and third pivot (12) upper portion is passed through adaptor (13) and is rotated with handheld piece (1) rear end and be connected, tong arm (11) rear end all is connected with through adjusting part and struts pole (14), struts pole (14) lateral wall and all sets up and struts board (15).
2. The distraction device of claim 1, wherein: the front circumferential side wall of the hand piece (1) is provided with anti-skid grains.
3. The distraction device of claim 2, wherein: slider (5) set up be with rectangle slide (2) complex rectangle structure, and slider (5) left and right sides be provided with rectangle spout (3) sliding fit's rectangle slider, the rectangle slider middle part all seted up with slider (5) inner chamber communicating transverse channel, limiting plate (7) both ends are passed respectively and are worn out rather than the transverse channel of homonymy, slider (5) middle part upside seted up with slider (5) inner chamber communicating vertical passageway, and vertical passageway and button piece (6) clearance fit.
4. The distraction device of claim 3, wherein: limiting sliding grooves are formed in the left inner side wall and the right inner side wall of the longitudinal channel, and limiting sliding blocks (16) matched with the limiting sliding grooves are arranged on the left side and the right side of the key block (6).
5. The distraction device according to claim 4, wherein the upper end of the button block (6) is provided with a key plate (17) with anti-skid lines.
6. The distraction device of claim 5, wherein: the adjusting assembly comprises an adjusting screw rod (18) and an adjusting block (19) fixed in the middle of the adjusting screw rod (18), a notch is formed in the rear end of the clamp arm (11), the adjusting screw rod (18) penetrates into the notch from one side of the notch in a spiral mode and penetrates out of the notch from the other side of the notch in a spiral mode, and the upper end of the opening rod (14) is fixedly connected with the adjusting block (19).
7. An orthopedic distraction device according to any of claims 1 to 6, wherein: the opening rod (14) and the opening plate (15) are both of metal structures, and anti-aging protective layers are arranged on the outer surfaces of the opening rod and the opening plate, and are formed by coating anti-aging paint.
8. The distraction device of claim 7, wherein: the anti-aging coating is composed of the following raw material components in parts by weight: 85 parts of modified water-based epoxy resin emulsion, 9 parts of zirconium phosphate, 9 parts of ultramarine, 5 parts of polyhexamethylene guanidine, 4.3 parts of barium petroleum sulfonate, 4.6 parts of lanoline magnesium soap, 4.0 parts of dodecenylsuccinic acid, 5.3 parts of glass flake, 11 parts of vinyl bis stearamide, 3.2 parts of glycerin monostearate, 2.0 parts of emulsifier, 2.0 parts of dispersant, 1.6 parts of film-forming assistant, 1.5 parts of flatting agent, 1.5 parts of defoaming agent, 1.6 parts of surfactant and 23 parts of deionized water;
the preparation method of the modified waterborne epoxy resin emulsion comprises the following steps:
a. transferring the aqueous epoxy resin emulsion into a reaction kettle, adding a proper amount of glyceryl monostearate and deionized water into the reaction kettle, setting the temperature in the reaction kettle to be 75 ℃, stirring for 5min at a speed of 420r/min by a stirrer, premixing toluene and epoxy resin, adding gamma-methacryloxypropyltrimethylsilane into the reaction kettle at the temperature, mixing and stirring for 10min at a speed of 200r/min, setting the temperature in the reaction kettle to be 95 ℃ after mixing, reacting for 10h at the temperature, and marking the obtained mixture as a mixed component in the reaction kettle after the reaction is finished;
b. cooling the mixed components in the reaction kettle to room temperature under natural conditions, and then adjusting the pH of the mixed components to 8.0 by using an ammonia water solution with the concentration of 6.0-8.0%, and marking the obtained mixture as a mixed solution;
c. heating the temperature of the mixed liquid in the reaction kettle to 80 ℃, adding 2-hydroxy-4-n-octoxy benzophenone, dibutyltin dilaurate and an initiator solution into the reaction kettle, and carrying out heat preservation reaction for 6 hours at the temperature of 80 ℃; and naturally cooling to room temperature, filtering and discharging to obtain the modified waterborne epoxy resin emulsion.
9. The distraction device of claim 8, wherein: the emulsifier is monoglyceride fatty acid glyceride; the dispersant is glyceryl tristearate; the film-forming auxiliary agent is propylene glycol methyl ether acetate; the leveling agent is polymethyl alkyl siloxane; the defoaming agent is an organic silicon defoaming agent BYK-018; the surfactant is fatty acid sorbitan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010010900.XA CN111166399A (en) | 2020-03-20 | 2020-03-20 | Distraction device for orthopedic surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010010900.XA CN111166399A (en) | 2020-03-20 | 2020-03-20 | Distraction device for orthopedic surgery |
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| Publication Number | Publication Date |
|---|---|
| CN111166399A true CN111166399A (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010010900.XA Withdrawn CN111166399A (en) | 2020-03-20 | 2020-03-20 | Distraction device for orthopedic surgery |
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| CN (1) | CN111166399A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113491546A (en) * | 2021-08-06 | 2021-10-12 | 山东中医药大学附属医院 | Pelvis osteotomy distractor |
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Application publication date: 20200519 |