CN108420662B - Automatic withdrawing device of medical adjustable speed optic fibre - Google Patents
Automatic withdrawing device of medical adjustable speed optic fibre Download PDFInfo
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- CN108420662B CN108420662B CN201810333667.1A CN201810333667A CN108420662B CN 108420662 B CN108420662 B CN 108420662B CN 201810333667 A CN201810333667 A CN 201810333667A CN 108420662 B CN108420662 B CN 108420662B
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- 239000000835 fiber Substances 0.000 title abstract description 12
- 239000013307 optical fiber Substances 0.000 claims abstract description 86
- 230000001105 regulatory effect Effects 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 10
- 239000004973 liquid crystal related substance Substances 0.000 claims description 8
- 210000003423 ankle Anatomy 0.000 claims description 3
- 210000001361 achilles tendon Anatomy 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000003466 welding Methods 0.000 abstract 1
- 210000002414 leg Anatomy 0.000 description 28
- 210000003414 extremity Anatomy 0.000 description 7
- 238000011282 treatment Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 210000004204 blood vessel Anatomy 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 239000008280 blood Substances 0.000 description 3
- 210000004369 blood Anatomy 0.000 description 3
- 244000309466 calf Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007631 vascular surgery Methods 0.000 description 3
- 206010046996 Varicose vein Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000013532 laser treatment Methods 0.000 description 2
- 210000003141 lower extremity Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 210000003752 saphenous vein Anatomy 0.000 description 2
- 208000027185 varicose disease Diseases 0.000 description 2
- 230000002792 vascular Effects 0.000 description 2
- 102000001554 Hemoglobins Human genes 0.000 description 1
- 108010054147 Hemoglobins Proteins 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 238000002695 general anesthesia Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 208000001297 phlebitis Diseases 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 230000001732 thrombotic effect Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- 210000003556 vascular endothelial cell Anatomy 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G13/00—Operating tables; Auxiliary appliances therefor
- A61G13/10—Parts, details or accessories
- A61G13/12—Rests specially adapted therefor; Arrangements of patient-supporting surfaces
- A61G13/1205—Rests specially adapted therefor; Arrangements of patient-supporting surfaces for specific parts of the body
- A61G13/1245—Knees, upper or lower legs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00345—Vascular system
- A61B2018/00404—Blood vessels other than those in or around the heart
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00696—Controlled or regulated parameters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B2018/2005—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser with beam delivery through an interstitially insertable device, e.g. needle
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Optics & Photonics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Otolaryngology (AREA)
- Electromagnetism (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention belongs to the technical field of medical auxiliary equipment, and discloses a medical speed-adjustable optical fiber automatic retraction device which is provided with a leg support; positioning grooves are formed in two sides of the leg support; one side of the leg support is provided with an optical fiber withdrawing box which is clamped in the positioning groove through a positioning pin; the utility model discloses a fiber draw-back box, including the fiber draw-back box, the fiber draw-back box has offered the through wires hole and bolt has the pretension screw, the inside pulley that is fixed with through pulley locating shaft of fiber draw-back box, the pulley middle part articulates there is the spring, the spring passes through the fixed block to be fixed on the pretension screw, the pulley other end and V-arrangement gyro wheel joint, shank holds in the palm the welding of utensil bottom has square tube, and the joint has the pretension knob in the square tube of base top. The invention can accurately position the lifting angle of the affected limb, accurately control the retraction speed of the optical fiber, save labor, reduce the operation difficulty and improve the operation effect.
Description
Technical Field
The invention belongs to the technical field of medical auxiliary equipment, and particularly relates to a medical speed-adjustable optical fiber automatic retraction device.
Background
Currently, the current state of the art commonly used in the industry is as follows:
Currently, in the operation of vascular surgery for laser treatment of varicose veins of lower limbs, it is a common practice that a patient under general anesthesia lies on a treatment bed, after the doctor lifts the affected limb by 30 ° by hand, the doctor slowly withdraws the laser fiber which has entered the great saphenous vein of the patient at a speed of 0.5cm/s to 2.0cm/s, and closes the great saphenous vein using the heat of the laser. However, because of the lack of an accurate measuring instrument, the angle of the affected limb lifted by the doctor by hands often has a large difference from 30 degrees, and the speed of withdrawing the optical fiber cannot be accurately grasped. Furthermore, complicated manual operation increases the operation difficulty, wastes the physical strength of operators, and finally influences the due treatment effect of the operation. At present, no device for assisting in lifting legs and automatically withdrawing optical fibers exists.
Since vascular surgery is an emerging subject in China for more than ten years, the number and quality of vascular surgeons are still not sufficiently cultured, how to reduce the operation difficulty and shorten the learning curve, and the problem that more vascular surgeons benefit patients after being trained for qualification early is needed to be solved. The laser treatment of varicose veins of lower limbs in vascular surgery is a newer technology in China, a plurality of related matched instruments and equipment are not perfect, the prior art is excessively dependent on the experience and manual operation of doctors, and has the following defects:
(1) The angle is raised to unable accurate grasp suffering limb, and the angle is too little can cause venous blood to empty unsmoothly, increases the incidence of postoperative thrombotic superficial phlebitis, increases patient's misery, is unfavorable for patient's postoperative to resume. Excessive evacuation of venous blood can be caused by excessive angles, and enough hemoglobin cannot absorb laser energy, so that vascular endothelial cells cannot be effectively destroyed, blood vessels are closed, and the treatment effect of an operation is affected;
(2) The withdrawal speed of the optical fiber cannot be accurately controlled, the optical fiber is withdrawn too fast or too slowly, so that energy is unevenly distributed in blood vessels, the local energy is too low, the blood vessels are closed and fail, the local energy is too high, the blood vessels are carbonized and ruptured, bleeding and subcutaneous blood stasis are caused, and the treatment effect of the operation is affected;
(3) The affected limb is required to be continuously lifted in the optical fiber withdrawing process, so that the fatigue of a doctor is easily caused, the physical strength of the doctor is wasted, and the treatment effect of the operation is influenced.
In summary, the problems of the prior art are:
(1) The elevation angle of the affected limb cannot be accurately grasped;
(2) The withdrawal speed of the optical fiber cannot be accurately grasped;
(3) Time and labor are wasted, and the treatment effect of the operation is affected.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a medical speed-adjustable optical fiber automatic retraction device.
The invention is realized in such a way that the medical speed-adjustable optical fiber automatic withdrawing device comprises a driving unit, a speed adjusting unit, an optical fiber pre-tightening transmission unit and a supporting unit,
The driving unit, the speed regulating unit and the optical fiber pre-tightening transmission unit are integrated in the optical fiber withdrawing box main body;
The upper end of the optical fiber withdrawing box main body is provided with a plurality of round holes which are tightly matched with a plurality of round bosses on the upper cover to form a closed square cavity, and a driving unit and a speed regulating unit are arranged in the closed square cavity;
the lower end of the optical fiber withdrawing box main body is provided with a plurality of round holes which are tightly matched with a plurality of round bosses on the lower cover to form a semi-closed square cavity, and an optical fiber pre-tightening transmission unit is arranged in the semi-closed square cavity;
the optical fiber withdrawing box main body is fixed on a positioning groove on the leg support of the supporting unit through a positioning shaft, a square groove is formed in the positioning shaft, the groove is matched with a square boss on the positioning groove, the optical fiber withdrawing box forms a 30-degree inclined angle with a horizontal plane, a square pipe at the lower end of the leg support of the supporting unit is in clearance fit with a square pipe at the upper part of the base, and the optical fiber withdrawing box main body is fixed through a pre-tightening knob on the base.
The drive unit includes: the miniature direct current servo motor is vertically arranged on the motor seat of the upper cover, the miniature direct current servo motor is sealed in a square closed cavity formed by the optical fiber withdrawing box main body and the upper cover, a motor shaft penetrates through a round hole of a middle partition plate of the optical fiber withdrawing box main body, and torque is output to drive the optical fiber withdrawing device; the motor shaft of the miniature DC servo motor is provided with a convex V-shaped roller, and the edge of the roller is a 1mm wide cylindrical surface. The convex V-shaped roller is used as a driving wheel and is driven by a miniature direct current servo motor to work together with the concave V-shaped roller used as a driven wheel.
The speed regulating unit comprises: the speed regulation knob, the liquid crystal display screen, the battery and the speed regulator circuit;
The speed regulating knob and the liquid crystal display screen are fixedly arranged on the outer surface of the upper cover, and the battery and the speed regulator circuit are fixedly arranged on the inner surface of the upper cover. The speed regulator circuit is powered by a battery, the working voltage is 4.5V-35V, the maximum output power is 90W, and the armature voltage of the miniature direct current servo motor is regulated by regulating the duty ratio of a pulse waveform by utilizing a PWM technology, so that the rotating speed of the motor is regulated; the speed regulating knob can change the output duty ratio of the speed regulator, so as to realize the rotation speed regulation of the miniature direct current servo motor 14 within the range of 0-100%; the liquid crystal display screen can display the linear speed of the edge of the convex V-shaped roller on the miniature direct current servo motor in real time and indirectly display the withdrawal speed of the optical fiber.
The optical fiber pre-tightening transmission unit comprises: the device comprises a pre-tightening screw, a fixed block, a spring, a pulley and a pulley positioning shaft;
The pulley is arranged on the pulley positioning shaft through a round hole on the pulley supporting rod and can rotate around the pulley positioning shaft, the inward concave V-shaped roller on the pulley is mutually attached to the outward convex V-shaped roller on the motor shaft of the miniature direct current servo motor, and the optical fiber is placed between the two rollers and is driven to move by the friction force between the rollers and the surface of the optical fiber;
The pulley support rod is connected to the fixed block through a fixedly connected spring, and the fixed block can slide on a rectangular groove on one side of the optical fiber withdrawing box main body and is fixed by a pre-tightening screw. The length of the spring is changed by adjusting the position of the fixed block, so that the pretightening force of the spring is adjusted, and the positive pressure of the pulley on the optical fiber is changed, namely the friction force of the roller on the surface of the optical fiber is changed.
The support unit includes: leg support, pre-tightening knob and base;
The lower part of the leg support is a square tube, is in clearance fit with the square tube at the upper part of the base, can move horizontally in the vertical direction, and is fixed on the base through a hexagonal pre-tightening knob at the side surface of the upper part of the base; the upper part of the leg support is an open arc semi-cylinder which is suitable for the shape of the human shank, the lower part of the semi-cylinder gradually converges in an arc envelope from bottom to top, and the arc at the top of the semi-cylinder slightly converges downwards to be suitable for the appearance structure of the ankle and achilles tendon of a patient;
the leg support device forms an included angle of 30 degrees with the horizontal plane, round positioning grooves with built-in rectangular bosses are symmetrically formed in two sides of the leg support device, and the positioning grooves are matched with positioning shafts which are symmetrically arranged on two sides of the optical fiber withdrawing box, so that the optical fiber withdrawing box is fixed. The square tube at the lower part of the leg support is positioned on the symmetry axis of the support and deviates to one side of the calf support, so that the pressure caused by the gravity of the leg of a patient is born by calf muscle groups at the lower side of the calf, the situation that local tissues and nerves are seriously pressed due to overlong operation time is avoided, the square tube at the upper part of the base is positioned on the symmetry axis of the length direction of the base bottom plate and deviates to one side of the ankle, the gravity center of the leg of the patient falls in the rectangular area of the base bottom plate towards the horizontal plane projection, the situation that the supporting unit is overturned due to the instability of the leg placement of the patient is avoided, and the symmetrical design of the leg support is convenient for different demands of the legs of the patient on the space position in the operation.
Further, the main body of the optical fiber withdrawing box is 120mm multiplied by 60mm multiplied by 54mm, and the integral size of the speed-adjustable optical fiber automatic withdrawing device is 367mm multiplied by 300mm multiplied by 180mm.
In summary, the invention has the advantages and positive effects that:
The leg support device is arranged, an included angle of 30 degrees is formed between the leg support device and the horizontal line, the patient limb lifting angle can be accurately positioned only by placing the patient limb on the leg support device, and the height of the leg support device is conveniently adjusted through the pre-tightening knob; the optical fiber withdrawing speed can be accurately controlled through the optical fiber withdrawing box, and time and labor are saved; the invention can bring great convenience to medical staff, can reduce the operation difficulty and improve the operation effect.
Drawings
FIG. 1 is a schematic view of a medical speed-adjustable optical fiber automatic retraction device according to an embodiment of the present invention;
Fig. 2 is a schematic view of a fiber retraction box of the medical speed-adjustable fiber automatic retraction device according to an embodiment of the present invention;
FIG. 3 is a schematic view of the internal structure of an optical fiber retracting box of the medical speed-adjustable optical fiber automatic retracting device according to the embodiment of the invention;
fig. 4 is a schematic diagram of a pulley structure of a medical speed-adjustable optical fiber automatic retraction device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of the internal structure of an optical fiber retraction box top cover of the medical speed-adjustable optical fiber automatic retraction device according to the embodiment of the invention;
FIG. 6 is a schematic diagram of a leg support structure of a medical adjustable speed optical fiber automatic retraction device according to an embodiment of the present invention;
in the figure: 1. leg support; 2. a switch; 3. a speed regulating knob; 4. an upper cover; 5. a liquid crystal display; 6. positioning a shaft; 7. an optical fiber withdrawal cassette body; 8. a lower cover; 9. a pre-tightening knob; 10. a base; 11. pre-tightening a screw; 12. a fixed block; 13. a spring; 14. a miniature DC servo motor; 15. a pulley; 16. a pulley positioning shaft; 17. v-shaped rollers; 18. a rotating shaft; 19. a bearing; 20. a pulley support rod; 21. a battery; 22. a motor base; 23. a speed regulator circuit; 24. a positioning groove; 25. and a threading hole.
Detailed Description
For a further understanding of the invention, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings.
As shown in fig. 1 to 6, the automatic medical speed-adjustable optical fiber retracting device provided by the embodiment of the invention comprises: the leg support 1, a switch 2, a speed regulating button 3, an upper cover 4, a liquid crystal display 5, a positioning shaft 6, an optical fiber withdrawing box main body 7, a lower cover 8, a pre-tightening knob 9, a base 10, a pre-tightening screw 11, a fixed block 12, a spring 13, a miniature direct current servo motor 14, a pulley 15, a pulley positioning shaft 16, a V-shaped roller 17, a rotating shaft 18, a bearing 19, a pulley supporting rod 20, a battery 21, a motor seat 22, a speed regulator circuit 23, a positioning groove 24 and a threading hole 25.
The embodiment of the invention provides a medical adjustable-speed optical fiber automatic retraction device which comprises a driving unit, a speed adjusting unit, an optical fiber pre-tightening transmission unit and a supporting unit. The driving unit, the speed regulating unit and the optical fiber pre-tightening transmission unit are integrated in the optical fiber withdrawing box main body 7. 4 round holes at the upper part of the optical fiber withdrawing box main body 7 are tightly matched with 4 round bosses on the upper cover 4 to form a closed square cavity, and a driving unit and a speed regulating unit are arranged in the closed square cavity. 4 round holes at the lower part of the optical fiber withdrawing box main body 7 are tightly matched with 4 round bosses on the lower cover 8 to form a semi-closed square cavity, and an optical fiber clamping unit is arranged in the semi-closed square cavity. The whole optical fiber withdrawing box is fixed on a positioning groove 24 on the leg support 1 of the supporting unit through a positioning shaft 6, a square groove is formed in the positioning shaft 6, and the groove is matched with a square boss on the positioning groove 24, so that the optical fiber withdrawing box forms a 30-degree inclined angle with the horizontal plane. The square tube at the lower end of the leg support 1 of the support unit is in clearance fit with the square tube at the upper part of the base 10 and is fixed by a pre-tightening knob 9 on the base 10.
As a preferred embodiment, the leg supporter 1 is made of polyester fiber, the base 10 and the pretensioning knob 9 are made of stainless steel alloy, the overall height is 367mm, the base length is 300mm, and the width is 180mm.
As a preferred embodiment, the optical fiber retracting box body 7 is integrally made of polyester fiber, positioning shafts 6 are arranged on two sides, the box body is 120mm long, 60mm wide and 54mm high.
When the device is used, the device is placed on a treatment bed, the lower leg of a patient is tightly attached to the leg support 1 through adjusting the pre-tightening knob 9, the optical fiber withdrawing box main body 7 is taken down, the lower cover 8 is opened, the optical fiber passes through threading holes 25 on two sides of the optical fiber withdrawing box main body 7 and between the V-shaped roller 17 and the pulley 15, and the pre-tightening force of the spring 13 is adjusted through adjusting the position of the pre-tightening screw 10, so that the optical fiber is clamped by the V-shaped roller 17 and the pulley 15. And then the upper cover and the lower cover 8 are covered, and the optical fiber withdrawing box main body 7 is fixedly arranged in the positioning grooves 24 on the left side and the right side of the leg support 1 through the positioning shaft 6 according to the left leg and the right leg of the patient, so that the optical fiber withdrawing box main body 7 is positioned on the inner side of the thigh of the patient. And then the speed regulating knob 3 is regulated according to the speed reading on the liquid crystal display 5, and the optical fiber withdrawing speed is set to be a surgical requirement value. The fiber then begins to retract automatically by depressing switch 2. The speed regulating knob 3 can be rotated at any time according to the requirement in the retracting process, and the retracting speed of the optical fiber can be regulated. After the optical fiber is completely retracted out of the blood vessel, the switch 2 is pressed down, and the retraction device is closed.
Compared with the conventional pole-changing speed regulation and variable-frequency speed regulation, the invention can realize the speed regulation of the direct-current servo motor by adopting a PWM speed regulation mode, and has the characteristics of smooth speed regulation process and rapid speed regulation response. In the PWM speed regulating system, under the condition that the power supply voltage U d is kept constant, the average value of the armature terminal voltage can be changed by adjusting the duty ratio, so as to realize the speed regulation of the motor. The duty ratio is changed by three methods of fixed-bandwidth frequency modulation, width modulation and frequency modulation, and as the latter two methods change the period of the control pulse width during speed regulation, oscillation is caused when the frequency of the control pulse is close to the natural frequency of the system, the duty ratio is adjusted by adopting the fixed-bandwidth method, and the voltage at two ends of the armature of the direct current servo motor is further changed:
u 0: an average value of the armature terminal voltage;
u d: a power supply voltage;
alpha T: the duty ratio is more than or equal to 0 and less than or equal to alpha T and less than or equal to 1.
As can be seen from the above formula, if the duty ratio of the voltage across the armature of the motor is controlled from 0 to 1, the actual voltage can be controlled to vary from 0 to the value of the voltage actually applied to the armature, so that the rotational speed of the dc servo motor can be continuously adjusted.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the invention in any way, but any simple modification, equivalent variation and modification of the above embodiments according to the technical principles of the present invention are within the scope of the technical solutions of the present invention.
Claims (2)
1. The medical speed-adjustable optical fiber automatic retraction device is characterized by comprising a driving unit, a speed adjusting unit, an optical fiber pre-tightening transmission unit and a supporting unit;
the driving unit, the speed regulating unit and the optical fiber pre-tightening transmission unit are integrated in the optical fiber withdrawing box main body;
The upper end of the optical fiber withdrawing box main body is provided with a plurality of round holes which are tightly matched with a plurality of round bosses on the upper cover to form a closed square cavity, and a driving unit and a speed regulating unit are arranged in the closed square cavity;
the lower end of the optical fiber withdrawing box main body is provided with a plurality of round holes which are tightly matched with a plurality of round bosses on the lower cover to form a semi-closed square cavity, and an optical fiber pre-tightening transmission unit is arranged in the semi-closed square cavity;
the optical fiber withdrawing box main body is fixed on a positioning groove on the leg support of the supporting unit through a positioning shaft, a square groove is formed in the positioning shaft, the groove is matched with a square boss on the positioning groove, so that the optical fiber withdrawing box forms a 30-degree inclined angle with a horizontal plane, a square pipe at the lower end of the leg support of the supporting unit is in clearance fit with a square pipe at the upper part of the base, and the optical fiber withdrawing box main body is fixed through a pre-tightening knob on the base;
The drive unit includes: the miniature direct current servo motor is vertically arranged on the motor seat of the upper cover, the miniature direct current servo motor is sealed in a square closed cavity formed by the optical fiber withdrawing box main body and the upper cover, a motor shaft penetrates through a round hole of a middle partition plate of the optical fiber withdrawing box main body, and torque is output to drive the optical fiber withdrawing device; the motor shaft of the miniature DC servo motor is provided with a convex V-shaped roller, and the edge of the roller is a cylindrical surface with the width of 1 mm;
The speed regulating unit comprises: the speed regulation knob, the liquid crystal display screen, the battery and the speed regulator circuit;
The speed regulating knob and the liquid crystal display screen are fixedly arranged on the outer surface of the upper cover, and the battery and the speed regulator circuit are fixedly arranged on the inner surface of the upper cover;
The optical fiber pre-tightening transmission unit comprises: the device comprises a pre-tightening screw, a fixed block, a spring, a pulley and a pulley positioning shaft;
The pulley is arranged on the pulley positioning shaft through a round hole on the pulley supporting rod, the inward concave V-shaped roller on the pulley is mutually attached to the outward convex V-shaped roller on the motor shaft of the miniature direct current servo motor, and the optical fiber is placed between the two rollers and is driven to move by the friction force between the rollers and the surface of the optical fiber;
the pulley support rod is connected to the fixed block through a fixedly connected spring, and the fixed block can slide on a rectangular groove on one side of the optical fiber withdrawing box main body and is fixed by a pre-tightening screw.
2. The medical adjustable speed optical fiber automatic retraction device according to claim 1 wherein the support unit comprises: leg support, pre-tightening knob and base;
The lower part of the leg support is a square tube, is in clearance fit with the square tube at the upper part of the base, and is fixed on the base through a hexagonal pre-tightening knob at the side surface of the upper part of the base; the upper part of the leg support is an open arc semi-cylinder which is suitable for the shape of the human shank, the lower part of the semi-cylinder gradually converges in an arc envelope from bottom to top, and the arc at the top of the semi-cylinder slightly converges downwards to be suitable for the appearance structure of the ankle and achilles tendon of a patient;
The leg support device forms an included angle of 30 degrees with the horizontal plane, round positioning grooves with built-in rectangular bosses are symmetrically formed in two sides of the leg support device, and the positioning grooves are matched with positioning shafts which are symmetrically arranged on two sides of the optical fiber withdrawing box, so that the optical fiber withdrawing box is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810333667.1A CN108420662B (en) | 2018-04-13 | 2018-04-13 | Automatic withdrawing device of medical adjustable speed optic fibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810333667.1A CN108420662B (en) | 2018-04-13 | 2018-04-13 | Automatic withdrawing device of medical adjustable speed optic fibre |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108420662A CN108420662A (en) | 2018-08-21 |
| CN108420662B true CN108420662B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810333667.1A Active CN108420662B (en) | 2018-04-13 | 2018-04-13 | Automatic withdrawing device of medical adjustable speed optic fibre |
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| CN (1) | CN108420662B (en) |
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| US20040199151A1 (en) * | 2003-04-03 | 2004-10-07 | Ceramoptec Industries, Inc. | Power regulated medical underskin irradiation treament system |
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| CN108420662A (en) | 2018-08-21 |
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