CN103654910B - Medical bone drill - Google Patents

Medical bone drill Download PDF

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Publication number
CN103654910B
CN103654910B CN201210383808.3A CN201210383808A CN103654910B CN 103654910 B CN103654910 B CN 103654910B CN 201210383808 A CN201210383808 A CN 201210383808A CN 103654910 B CN103654910 B CN 103654910B
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China
Prior art keywords
housing
rotating shaft
hole
trigger
protection face
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CN201210383808.3A
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Chinese (zh)
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CN103654910A (en
Inventor
朱亮洪
吕然博
杨春良
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WEIHAI WEICHUANG MEDICAL INSTRUMENT CO., LTD.
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Weihai Weichuang Medical Instrument Co Ltd
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613Component parts
    • A61B17/1622Drill handpieces
    • A61B17/1624Drive mechanisms therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613Component parts
    • A61B17/1633Sleeves, i.e. non-rotating parts surrounding the bit shaft, e.g. the sleeve forming a single unit with the bit shaft

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

The present invention relates to technical field of medical instruments, specifically a kind of medical bone drill, comprise housing and drill bit, it is characterized in that being provided with rotating shaft, unilateral bearing, driving wheel, rotate forward bevel gear, cone pinion, back-moving spring and trigger, drill bit rear portion is fixedly connected with housing through bearing, housing is pistol-shaped, rotating shaft is provided with in housing, rotating shaft is provided with and rotates forward bevel gear and unilateral bearing, rotating shaft two ends are connected with housing respectively, unilateral bearing is fixed in driving wheel, corresponding driving wheel side is provided with cone pinion, cone pinion is fixedly connected with drill bit, driving wheel lower end is fixedly connected with trigger, trigger is connected with housing through back-moving spring, the present invention is owing to adopting said structure, there is structure simple, turn hole speed and the degree of depth controlled, it is convenient to control, operating time is short, the advantages such as patient suffering is little.

Description

Medical bone drill
Technical field
The present invention relates to technical field of medical instruments, specifically a kind of medical bone drill.
Background technology
At present, in clinical operation, the bone drill used has electric bone drill, hand bone drill and bradawl to bore three kinds, electric bone drill is made up of housing, motor, actuating device and drill chuck head, and motor and actuating device are all located in housing, and motor is fixedly connected with drill chuck head through the output shaft of actuating device, its deficiency is: electric bone drill is not easy sterilization, expensive, and wayward, easy operate miss; Hand bone drill needs two hand operateds, and operation is inconvenience very; Need to use comparatively great strength during bradawl boring, and speed is too slow, namely wastes operating time, causes suffering again to patient.Further, the depth localization device that these three kinds of bone drills adopt pulls out of hole dynamic with drill bit one, easily abrade epidermis.
Summary of the invention
The object of the invention is to solve above-mentioned the deficiencies in the prior art, provide a kind of structure simple, turn hole speed and the degree of depth is controlled, control the medical bone drill convenient, operating time is short, patient suffering is little.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of medical bone drill, comprise housing and drill bit, it is characterized in that being provided with rotating shaft, unilateral bearing, driving wheel, rotate forward bevel gear, cone pinion, back-moving spring and trigger, drill bit rear portion is fixedly connected with housing through bearing, housing is pistol-shaped, rotating shaft is provided with in housing, rotating shaft is provided with and rotates forward bevel gear and unilateral bearing, rotating shaft two ends are connected with housing respectively, unilateral bearing is fixed in driving wheel, corresponding driving wheel side is provided with cone pinion, cone pinion is fixedly connected with drill bit, driving wheel lower end is fixedly connected with trigger, trigger is connected with housing through back-moving spring, automatically reset under the tension force effect of back-moving spring to make trigger.
The present invention can be fixed with change-speed gearing on unilateral bearing, trigger upper end is provided with driven wheel, driven wheel is hinged through fulcrum and housing, driven wheel side is fixedly connected with trigger, and opposite side is meshed with driven wheel, is beneficial to trigger and drives driven wheel to rotate, driven wheel drives change-speed gearing to rotate, change-speed gearing drives rotating shaft by unilateral bearing, forward bevel gear rotates, and then drives cone pinion to rotate, and cone pinion drives drill bit to carry out operation.
The present invention can be provided with driving tooth bar between trigger and driven wheel, tooth bar is driven to be meshed with driven wheel, tooth bar lower end is driven to be provided with glidepath, drive tooth bar outer end to be fixedly connected with trigger, the inner is connected with housing through back-moving spring, and trigger upper end is provided with slide rail, sliding way is provided with bottom the gun barrel of housing, be provided with glide path in the pikestaff of housing, trigger upper end is slidably connected through upper slide rail and sliding way, and bottom is slidably connected through driving the glidepath on tooth bar and glide path.
The present invention also can be provided with inversion set in rotating shaft, reversion rotating shaft comprises reversion bevel gear, reversing cover and change-over key, reversion bevel gear is located at the other end of rotating shaft, reversion bevel gear is corresponding with rotating forward bevel gear, rotating shaft one end is connected with housing through bearing, the other end is connected with change-over key through reversing cover, locating piece is shown at reversing cover two ends respectively Circle-Array, intermediate circumference array has positioning tooth, housing is provided with the through hole matched passed for reversing cover and positioning tooth, inner walls and outer wall are provided with the positioning convex point matched with locating piece, rotation for reversing cover is located, and then prevent rotating shaft from moving axially, the locating piece of reversing cover one end is positioned at enclosure interior, other end locating piece is positioned at hull outside, to prevent from moving axially rotating shaft, when the positioning tooth on reversing cover is through through hole when being positioned at enclosure interior, the through hole that positioning tooth matches with it is rotary shifted, locating piece on reversing cover and the positioning convex point of housing exterior walls fasten, cone pinion is meshed with rotating forward bevel gear, drive drill bit to rotate forward to hole, when the positioning tooth on reversing cover is through through hole when being positioned at hull outside, the through hole that positioning tooth matches with it is rotary shifted, locating piece on reversing cover and the positioning convex point of inner walls fasten, cone pinion is meshed with reversion bevel gear, drive drill bit reversely rotates.
The present invention can be provided with depth localization cover on the gun barrel of housing, depth localization cover is by front protection face, upper protection face, left protection face and right protection face are mutually permanently connected and form, front protection face is provided with the through hole that drill bit passes, left protection face and right protection face lower end are provided with shifting sledge, left protection face and right protection face are provided with positioning through hole, the corresponding shifting sledge in gun barrel lower end of housing is provided with mobile slideway, positioning through hole is elongated, and parallel with shifting sledge, depth localization cover is fixedly connected with housing with the positioning through hole on right protection face through left protection face through bolt, be beneficial to the degree of depth adjusting boring.
The present invention owing to adopting said structure, have structure simple, turn hole speed and the degree of depth is controlled, control the advantages such as convenient, operating time is short, patient suffering is little.
Accompanying drawing explanation
Fig. 1 is the structural representation of the first embodiment of the present invention.
Fig. 2 is the structural representation of the second embodiment of the present invention.
Fig. 3 is the structural representation of the third embodiment of the present invention.
Fig. 4 is the structural representation of the present invention's the 4th kind of embodiment.
Fig. 5 is the structural representation of the present invention's the 5th kind of embodiment.
Fig. 6 is the structural representation of the present invention's the 6th kind of embodiment.
Fig. 7 is the structural representation of the present invention's the 7th kind of embodiment.
Fig. 8 is the structural representation of B-B top view in A-A top view in Fig. 2 and Fig. 3 respectively.
Fig. 9 is the structural representation of D-D top view in the C-C top view of Fig. 4 and Fig. 6 respectively.
Figure 10 is the structural representation that change-over key and reversing cover are arranged in rotating shaft.
Figure 11 is the structural representation of depth localization cover in the present invention.
Figure 12 be in Fig. 9 E to the structural representation of housing.
Figure 13 be in Fig. 9 F to the structural representation of housing.
Reference numeral: housing 1, drill bit 2, rotating shaft 3, unilateral bearing 4, change-speed gearing 5, driven wheel 6, rotate forward bevel gear 7, reversion bevel gear 8, cone pinion 9, back-moving spring 10, change-over key 11, reversing cover 12, positioning convex point 13, trigger 14, locating piece 15, positioning tooth 16, depth localization cover 17, front protection face 18, upper protection face 19, left protection face 20, right protection face 21, shifting sledge 22, positioning through hole 23, mobile slideway 24, bolt 25, drive tooth bar 26, sliding way 27, glide path 28, locating piece 29, positioning convex point 30, driving wheel 31.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described:
Embodiment 1 as shown in Figure 1: a kind of medical bone drill, comprise housing 1, drill bit 2, rotating shaft 3, unilateral bearing 4, driving wheel 31, rotate forward bevel gear 7, cone pinion 9, back-moving spring 10 and trigger 14, drill bit 2 rear portion is fixedly connected with housing 1 through bearing, housing 1 is in pistol-shaped, housing is fixed by left shell and right shell body to form, rotating shaft 3 is provided with in housing 1, rotating shaft 3 is provided with and rotates forward bevel gear 7 and unilateral bearing 4, rotating shaft 3 two ends are connected with housing 1 respectively, unilateral bearing 4 is fixed in driving wheel 31, corresponding driving wheel 31 side is provided with cone pinion 9, cone pinion 9 is fixedly connected with drill bit 2, driving wheel 31 lower end is fixedly connected with trigger 14, trigger 14 is connected with housing 1 through back-moving spring 10, automatically reset under the tension force effect of back-moving spring 10 to make trigger 14, depth localization cover 17 is arranged with outside the gun barrel of housing 1, depth localization cover 17 is by front protection face 18, upper protection face 19, left protection face 20 and right protection face 21 are mutually permanently connected and form, front protection face 18 is provided with the through hole that drill bit 2 passes, left protection face 20 and right protection face 21 lower end are provided with shifting sledge 22, left protection face 20 and right protection face 21 are provided with positioning through hole 23, the corresponding shifting sledge in gun barrel lower end of housing 1 is provided with mobile slideway 24, positioning through hole 23 is elongated, and parallel with shifting sledge 22, depth localization cover 17 is fixedly connected with housing 1 with the positioning through hole 23 on right protection face 21 through left protection face 20 through bolt 25, be beneficial to the degree of depth adjusting boring.The present invention is when Clinical practice, by adjustment bolt 25, mobile depth localization cover 17 arrives the suitable position of housing 1, the length that drill bit 2 is exposed is drilling depth, holds the handle on housing, and button puts trigger repeatedly, trigger drives driving wheel 31 to rotate, driving wheel 31 drives rotating shaft to rotate by unilateral bearing, and rotating shaft drives and rotates forward bevel gear and cone pinion rotation, and then drives bit boring.
Embodiment as shown in Figure 2: a kind of medical bone drill, comprise housing 1, drill bit 2, rotating shaft 3, unilateral bearing 4, change-speed gearing 5, driven wheel 6, rotate forward bevel gear 7, cone pinion 9, back-moving spring 10 and trigger 14, drill bit 2 rear portion is fixedly connected with housing 1 through bearing, housing 1 is in pistol-shaped, housing is fixed by left shell and right shell body to form, rotating shaft 3 is provided with in housing 1, rotating shaft 3 is provided with and rotates forward bevel gear 7 and unilateral bearing 4, rotating shaft 3 two ends are connected with housing 1 respectively, unilateral bearing 4 is fixed in change-speed gearing 5, corresponding change-speed gearing 5 side is provided with cone pinion 9, cone pinion 9 is fixedly connected with drill bit 2, driven wheel 6 is provided with below change-speed gearing 5, driven wheel 6 is meshed with change-speed gearing 5, driven wheel 6 lower end is fixedly connected with trigger 14, trigger 14 is connected with housing 1 through back-moving spring 10, automatically reset under the tension force effect of back-moving spring 10 to make trigger 14, depth localization cover 17 is arranged with outside the gun barrel of housing 1, depth localization cover 17 is by front protection face 18, upper protection face 19, left protection face 20 and right protection face 21 are mutually permanently connected and form, front protection face 18 is provided with the through hole that drill bit 2 passes, left protection face 20 and right protection face 21 lower end are provided with shifting sledge 22, left protection face 20 and right protection face 21 are provided with positioning through hole 23, the corresponding shifting sledge in gun barrel lower end of housing 1 is provided with mobile slideway 24, positioning through hole 23 is elongated, and parallel with shifting sledge 22, depth localization cover 17 is fixedly connected with housing 1 with the positioning through hole 23 on right protection face 21 through left protection face 20 through bolt 25, be beneficial to the degree of depth adjusting boring.The present invention is when Clinical practice, by adjustment bolt 25, mobile depth localization cover 17 arrives the suitable position of housing 1, and the length that drill bit 2 is exposed is drilling depth, holds the handle on housing, button puts trigger repeatedly, trigger drives driven wheel 6 to rotate, and driven wheel 6 drives change-speed gearing 5 to rotate, and change-speed gearing drives rotating shaft to rotate by unilateral bearing, rotating shaft drives and rotates forward bevel gear and cone pinion rotation, and then drives bit boring.
Embodiment as shown in Figure 3: a kind of medical bone drill, comprise housing 1, drill bit 2, rotating shaft 3, unilateral bearing 4, change-speed gearing 5, driven wheel 6, drive tooth bar 26, rotate forward bevel gear 7, cone pinion 9, back-moving spring 10 and trigger 14, drill bit 2 rear portion is fixedly connected with housing 1 through bearing, housing 1 is in pistol-shaped, housing is fixed by left shell and right shell body to form, rotating shaft 3 is provided with in housing 1, rotating shaft 3 is provided with and rotates forward bevel gear 7 and unilateral bearing 4, rotating shaft 3 two ends are connected with housing 1 respectively, unilateral bearing 4 is fixed in change-speed gearing 5, corresponding change-speed gearing 5 side is provided with cone pinion 9, cone pinion 9 is fixedly connected with drill bit 2, driven wheel 6 is provided with below change-speed gearing 5, driven wheel 6 is meshed with change-speed gearing 5, tooth bar 26 is driven to be meshed with driven wheel 6, tooth bar 26 lower end is driven to be provided with glidepath, tooth bar 26 outer end is driven to be fixedly connected with trigger 14, the inner is connected with housing 1 through back-moving spring 10, trigger 14 upper end is provided with slide rail, sliding way 27 is provided with bottom the gun barrel of housing 1, glide path 28 is provided with in the pikestaff of housing 1, trigger 14 upper end is slidably connected through upper slide rail and sliding way 27, bottom is slidably connected through driving the glidepath on tooth bar 26 and glide path 28, depth localization cover 17 is arranged with outside the gun barrel of housing 1, depth localization cover 17 is by front protection face 18, upper protection face 19, left protection face 20 and right protection face 21 are mutually permanently connected and form, front protection face 18 is provided with the through hole that drill bit 2 passes, left protection face 20 and right protection face 21 lower end are provided with shifting sledge 22, left protection face 20 and right protection face 21 are provided with positioning through hole 23, the corresponding shifting sledge in gun barrel lower end of housing 1 is provided with mobile slideway 24, positioning through hole 23 is elongated, and parallel with shifting sledge 22, depth localization cover 17 is fixedly connected with housing 1 with the positioning through hole 23 on right protection face 21 through left protection face 20 through bolt 25, be beneficial to the degree of depth adjusting boring.The present invention is when Clinical practice, by adjustment bolt 25, mobile depth localization cover 17 arrives the suitable position of housing 1, the length that drill bit 2 is exposed is drilling depth, hold the handle on housing, button puts trigger 14 repeatedly, trigger drives and drives tooth bar 26 to move back and forth, rack drives driven wheel 6 is driven to rotate, driven wheel 6 drives change-speed gearing 5 to rotate, change-speed gearing 5 drives rotating shaft 3 to rotate by unilateral bearing 4, and rotating shaft 3 drives rotating forward bevel gear 7 and cone pinion 9 to rotate, and then drives drill bit 2 rotary drilling.
Embodiment as shown in Figure 4: a kind of medical bone drill, comprise housing 1, drill bit 2, rotating shaft 3, unilateral bearing 4, change-speed gearing 5, driven wheel 6, rotate forward bevel gear 7, reversion bevel gear 8, cone pinion 9, back-moving spring 10, change-over key 11, reversing cover 12 and trigger 14, drill bit 2 rear portion is fixedly connected with housing 1 through bearing, housing 1 is in pistol-shaped, housing is fixed by left shell and right shell body to form, rotating shaft 3 is provided with in housing 1, rotating shaft 3 is provided with successively and rotates forward bevel gear 7, unilateral bearing 4 and reversion bevel gear 8, rotating shaft 3 one end is connected with housing 1, the other end is connected with change-over key 11 through reversing cover 12, unilateral bearing is fixed in change-speed gearing, corresponding change-speed gearing 5 side is provided with cone pinion 9, cone pinion 9 is fixedly connected with drill bit 2, locating piece 15 is shown at reversing cover 12 two ends respectively Circle-Array, 29, intermediate circumference array has positioning tooth 16, housing 1 is provided with the through hole matched passed for reversing cover 12 and positioning tooth 16, housing 1 inner and outer wall is respectively equipped with and locating piece 15, 29 positioning convex points matched 13, 30, rotation for reversing cover 12 is located, and then prevent rotating shaft 3 from moving axially, the locating piece 15 of reversing cover 12 one end is positioned at housing 1 inside, it is outside that other end locating piece 29 is positioned at housing 1, when the positioning tooth 16 on reversing cover 12 passes through hole and is positioned at housing 1 inside, the through hole that positioning tooth 16 matches with it is rotary shifted, the locating piece 29 of reversing cover 12 other end fastens with the positioning convex point 30 of shell 1 outer wall, cone pinion 9 is meshed with rotating forward bevel gear 7, drive drill bit 2 to rotate forward to hole, when the positioning tooth 16 on reversing cover 12 passes through hole and is positioned at housing 1 outside, the through hole that positioning tooth 16 matches with it is rotary shifted, the locating piece 15 of reversing cover 12 one end fastens with the positioning convex point 13 of shell 1 inwall, cone pinion 9 is meshed with reversion bevel gear 8, drill bit 2 is driven to reversely rotate, driven wheel 6 is provided with below change-speed gearing 5, driven wheel 6 upper end is meshed with change-speed gearing 5, lower end is fixedly connected with trigger 14, the present invention is when Clinical practice, the hands handle of hand-held housing 1, press change-over key 11, positioning tooth on reversing cover 12 16 is through through hole and after being positioned at housing 1 inside, rotate change-over key 11, the through hole that positioning tooth 16 matches with it misplaces, locating piece 29 fastens with the positioning convex point 30 of housing 1 outer wall, rotate forward bevel gear 7 to be meshed with cone pinion 9, button puts trigger 14 repeatedly, driven wheel 6 on trigger 14 drives change-speed gearing 5 to rotate, change-speed gearing 5 drives rotating shaft 3 to rotate by unilateral bearing 4, rotating shaft 3 drives rotating forward bevel gear 7 and cone pinion 9 to rotate, and then drive drill bit 2 rotary drilling.Rotate change-over key 11 and oppositely move axially, positioning tooth 16 on reversing cover 12 passes through hole and is positioned at housing 1 outside, the through hole that positioning tooth 16 matches with it is rotary shifted, locating piece 15 fastens with the positioning convex point 13 of housing 1 inwall, reversion bevel gear 8 is meshed with cone pinion 9, button puts trigger 14 repeatedly, driven wheel 6 on trigger 14 drives change-speed gearing 5 to rotate, change-speed gearing 5 drives rotating shaft 3 to rotate by unilateral bearing 4, rotating shaft 3 drives reversion bevel gear 8 and cone pinion 9 to rotate, and then drives drill bit 2 back-drilling to exit.
Embodiment as shown in Figure 5: a kind of medical bone drill, comprise housing 1, drill bit 2, rotating shaft 3, unilateral bearing 4, change-speed gearing 5, driven wheel 6, rotate forward bevel gear 7, reversion bevel gear 8, cone pinion 9, back-moving spring 10, change-over key 11, reversing cover 12 and trigger 14, drill bit 2 rear portion is fixedly connected with housing 1 through bearing, housing 1 is in pistol-shaped, housing is fixed by left shell and right shell body to form, rotating shaft 3 is provided with in housing 1, rotating shaft 3 is provided with successively and rotates forward bevel gear 7, unilateral bearing 4 and reversion bevel gear 8, rotating shaft 3 one end is connected with housing 1, the other end is connected with change-over key 11 through reversing cover 12, unilateral bearing is fixed in change-speed gearing, corresponding change-speed gearing 5 side is provided with cone pinion 9, cone pinion 9 is fixedly connected with drill bit 2, locating piece 15 is shown at reversing cover 12 two ends respectively Circle-Array, 29, intermediate circumference array has positioning tooth 16, housing 1 is provided with the through hole matched passed for reversing cover 12 and positioning tooth 16, housing 1 inner and outer wall is respectively equipped with and locating piece 15, 29 positioning convex points matched 13, 30, rotation for reversing cover 12 is located, and then prevent rotating shaft 3 from moving axially, the locating piece 15 of reversing cover 12 one end is positioned at housing 1 inside, it is outside that other end locating piece 29 is positioned at housing 1, when the positioning tooth 16 on reversing cover 12 passes through hole and is positioned at housing 1 inside, the through hole that positioning tooth 16 matches with it is rotary shifted, the locating piece 29 of reversing cover 12 other end fastens with the positioning convex point 30 of housing 1 outer wall, cone pinion 9 is meshed with rotating forward bevel gear 7, drive drill bit 2 to rotate forward to hole, when the positioning tooth 16 on reversing cover 12 passes through hole and is positioned at housing 1 outside, the through hole that positioning tooth 16 matches with it is rotary shifted, the locating piece 15 of reversing cover 12 one end fastens with the positioning convex point 13 of housing 1 inwall, cone pinion 9 is meshed with reversion bevel gear 8, drill bit 2 is driven to reversely rotate, driven wheel 6 is provided with below change-speed gearing 5, driven wheel 6 upper end is meshed with change-speed gearing 5, lower end is fixedly connected with trigger 14, depth localization cover 17 is arranged with outside the gun barrel of housing 1, depth localization cover 17 is by front protection face 18, upper protection face 19, left protection face 20 and right protection face 21 are mutually permanently connected and form, front protection face 18 is provided with the through hole that drill bit 2 passes, left protection face 20 and right protection face 21 lower end are provided with shifting sledge 22, left protection face 20 and right protection face 21 are provided with positioning through hole 23, the corresponding shifting sledge in gun barrel lower end of housing 1 is provided with mobile slideway 24, positioning through hole 23 is elongated, and parallel with shifting sledge 22, depth localization cover 17 is fixedly connected with housing 1 with the positioning through hole 23 on right protection face 21 through left protection face 20 through bolt 25, be beneficial to the degree of depth adjusting boring, the present invention is when Clinical practice, the hands handle of hand-held housing 1, press change-over key 11, positioning tooth on reversing cover 12 16 is through through hole and after being positioned at housing 1 inside, rotate change-over key 11, the through hole that positioning tooth 16 matches with it misplaces, locating piece 29 fastens with the positioning convex point 30 of housing 1 outer wall, rotate forward bevel gear 7 to be meshed with cone pinion 9, button puts trigger 14 repeatedly, driven wheel 6 on trigger 14 drives change-speed gearing 5 to rotate, change-speed gearing 5 drives rotating shaft 3 to rotate by unilateral bearing 4, rotating shaft 3 drives rotating forward bevel gear 7 and cone pinion 9 rotate and then drive drill bit 2 rotary drilling, rotate change-over key 11 and oppositely move axially, positioning tooth 16 on reversing cover 12 passes through hole and is positioned at housing 1 outside, the through hole that positioning tooth 16 matches with it is rotary shifted, locating piece 15 fastens with the positioning convex point 13 of housing 1 inwall, reversion bevel gear 8 is meshed with cone pinion 9, button puts trigger 14 repeatedly, driven wheel 6 on trigger 14 drives change-speed gearing 5 to rotate, change-speed gearing 5 drives rotating shaft 3 to rotate by unilateral bearing 4, rotating shaft 3 drives reversion bevel gear 8 and cone pinion 9 to rotate, and then drive drill bit 2 back-drilling to exit.
Embodiment as shown in Figure 6: a kind of medical bone drill, comprise housing 1, drill bit 2, rotating shaft 3, unilateral bearing 4, change-speed gearing 5, driven wheel 6, drive tooth bar 26, rotate forward bevel gear 7, reversion bevel gear 8, cone pinion 9, back-moving spring 10, change-over key 11, reversing cover 12 and trigger 14, drill bit 2 rear portion is fixedly connected with housing 1 through bearing, housing 1 is in pistol-shaped, housing is fixed by left shell and right shell body to form, rotating shaft 3 is provided with in housing 1, rotating shaft 3 is provided with successively and rotates forward bevel gear 7, unilateral bearing 4 and reversion bevel gear 8, rotating shaft 3 one end is connected with housing 1, the other end is connected with change-over key 11 through reversing cover 12, unilateral bearing is fixed in change-speed gearing, corresponding change-speed gearing 5 side is provided with cone pinion 9, cone pinion 9 is fixedly connected with drill bit 2, locating piece 15 is shown at reversing cover 12 two ends respectively Circle-Array, 29, intermediate circumference array has positioning tooth 16, housing 1 is provided with the through hole matched passed for reversing cover 12 and positioning tooth 16, housing 1 inner and outer wall is respectively equipped with and locating piece 15, 29 positioning convex points matched 13, 30, rotation for reversing cover 12 is located, and then prevent rotating shaft 3 from moving axially, the locating piece 15 of reversing cover 12 one end is positioned at housing 1 inside, it is outside that other end locating piece 29 is positioned at housing 1, when the positioning tooth 16 on reversing cover 12 passes through hole and is positioned at housing 1 inside, the through hole that positioning tooth 16 matches with it is rotary shifted, the locating piece 29 of reversing cover 12 other end fastens with the positioning convex point 30 of housing 1 outer wall, cone pinion 9 is meshed with rotating forward bevel gear 7, drive drill bit 2 to rotate forward to hole, when the positioning tooth 16 on reversing cover 12 passes through hole and is positioned at housing 1 outside, the through hole that positioning tooth 16 matches with it is rotary shifted, the locating piece 15 of reversing cover 12 one end fastens with the positioning convex point 13 of housing 1 inwall, cone pinion 9 is meshed with reversion bevel gear 8, drill bit 2 is driven to reversely rotate, driven wheel 6 is provided with below change-speed gearing 5, driven wheel 6 upper end is meshed with change-speed gearing 5, lower end is meshed with driving tooth bar 26, tooth bar 26 lower end is driven to be provided with glidepath, tooth bar 26 outer end is driven to be fixedly connected with trigger 14, the inner is connected with housing 1 through back-moving spring 10, trigger 14 upper end is provided with slide rail, sliding way 27 is provided with bottom the gun barrel of housing 1, glide path 28 is provided with in the pikestaff of housing 1, trigger 14 upper end is slidably connected through upper slide rail and sliding way 27, bottom is slidably connected through driving the glidepath on tooth bar 26 and glide path 28, the present invention is when Clinical practice, hand-held housing 1 hands handle, press change-over key 11, positioning tooth on reversing cover 12 16 is through through hole and after being positioned at housing 1 inside, rotate change-over key 11, the through hole that positioning tooth 16 matches with it misplaces, the locating piece 29 of reversing cover outer end fastens with the positioning convex point 30 of housing 1 outer wall, rotate forward bevel gear 7 to be meshed with cone pinion 9, button puts trigger 14 repeatedly, trigger 14 moves back and forth along sliding way 27 and glide path 28, drive and drive tooth bar 26 to move back and forth, tooth bar 26 is driven to drive driven wheel 6 to rotate, driven wheel 6 drives change-speed gearing 5 to rotate, change-speed gearing 5 drives rotating shaft 3 to rotate by unilateral bearing 4, rotating shaft 3 drives rotating forward bevel gear 7 to drive cone pinion 9 to rotate, and then drive drill bit 2 rotary drilling, when rotation change-over key 11 also oppositely moves axially, positioning tooth 16 on reversing cover 12 passes through hole and is positioned at housing 1 outside, the through hole that positioning tooth 16 matches with it misplaces, locating piece 15 fastens with the positioning convex point 13 of housing 1 inwall, reversion bevel gear 8 is meshed with cone pinion 9, button puts trigger 14 repeatedly, thus drill bit 2 reversion can be driven to exit.
Embodiment as shown in Figure 7: a kind of medical bone drill, comprise housing 1, drill bit 2, rotating shaft 3, unilateral bearing 4, change-speed gearing 5, driven wheel 6, drive tooth bar 26, rotate forward bevel gear 7, reversion bevel gear 8, cone pinion 9, back-moving spring 10, change-over key 11, reversing cover 12 and trigger 14, drill bit 2 rear portion is fixedly connected with housing 1 through bearing, housing 1 is in pistol-shaped, housing is fixed by left shell and right shell body to form, rotating shaft 3 is provided with in housing 1, rotating shaft 3 is provided with successively and rotates forward bevel gear 7, unilateral bearing 4 and reversion bevel gear 8, rotating shaft 3 one end is connected with housing 1, the other end is connected with change-over key 11 through reversing cover 12, unilateral bearing is fixed in change-speed gearing, corresponding change-speed gearing 5 side is provided with cone pinion 9, cone pinion 9 is fixedly connected with drill bit 2, locating piece 15 is shown at reversing cover 12 two ends respectively Circle-Array, 29, intermediate circumference array has positioning tooth 16, housing 1 is provided with the through hole matched passed for reversing cover 12 and positioning tooth 16, housing 1 inner and outer wall is respectively equipped with and locating piece 15, 29 positioning convex points matched 13, 30, rotation for reversing cover 12 is located, and then prevent rotating shaft 3 from moving axially, the locating piece 15 of reversing cover 12 one end is positioned at housing 1 inside, it is outside that other end locating piece 29 is positioned at housing 1, when the positioning tooth 16 on reversing cover 12 passes through hole and is positioned at housing 1 inside, the through hole that positioning tooth 16 matches with it is rotary shifted, the locating piece 29 of reversing cover 12 other end fastens with the positioning convex point 30 of housing 1 outer wall, cone pinion 9 is meshed with rotating forward bevel gear 7, drive drill bit 2 to rotate forward to hole, when the positioning tooth 16 on reversing cover 12 passes through hole and is positioned at housing 1 outside, the through hole that positioning tooth 16 matches with it is rotary shifted, the locating piece 15 of reversing cover 12 one end fastens with the positioning convex point 13 of housing 1 inwall, cone pinion 9 is meshed with reversion bevel gear 8, drill bit 2 is driven to reversely rotate, driven wheel 6 is provided with below change-speed gearing 5, driven wheel 6 upper end is meshed with change-speed gearing 5, lower end is meshed with driving tooth bar 26, tooth bar 26 lower end is driven to be provided with glidepath, tooth bar 26 outer end is driven to be fixedly connected with trigger 14, the inner is connected with housing 1 through back-moving spring 10, trigger 14 upper end is provided with slide rail, sliding way 27 is provided with bottom the gun barrel of housing 1, glide path 28 is provided with in the pikestaff of housing 1, trigger 14 upper end is slidably connected through upper slide rail and sliding way 27, bottom is slidably connected through driving the glidepath on tooth bar 26 and glide path 28, the present invention can be arranged with depth localization cover 17 outside the gun barrel of housing 1, depth localization cover 17 is by front protection face 18, upper protection face 19, left protection face 20 and right protection face 21 are mutually permanently connected and form, front protection face 18 is provided with the through hole that drill bit 2 passes, left protection face 20 and right protection face 21 lower end are provided with shifting sledge 22, left protection face 20 and right protection face 21 are provided with positioning through hole 23, the corresponding shifting sledge in gun barrel lower end of housing 1 is provided with mobile slideway 24, positioning through hole 23 is elongated, and parallel with shifting sledge 22, depth localization cover 17 is fixedly connected with housing 1 with the positioning through hole 23 on right protection face 21 through left protection face 20 through bolt 25, be beneficial to the degree of depth adjusting boring.The present invention is when Clinical practice, by adjustment bolt 25, mobile depth localization cover 17 arrives the suitable position of housing 1, the length that drill bit 2 is exposed is drilling depth, hand-held housing 1 hands handle, press change-over key 11, positioning tooth on reversing cover 12 16 is through through hole and after being positioned at housing 1 inside, rotate change-over key 11, the through hole that positioning tooth 16 matches with it misplaces, the locating piece 29 of reversing cover outer end fastens with the positioning convex point 30 of housing 1 outer wall, rotate forward bevel gear 7 to be meshed with cone pinion 9, button puts trigger 14 repeatedly, trigger 14 moves back and forth along sliding way 27 and glide path 28, drive and drive tooth bar 26 to move back and forth, tooth bar 26 is driven to drive driven wheel 6 to rotate, driven wheel 6 drives change-speed gearing 5 to rotate, change-speed gearing 5 drives rotating shaft 3 to rotate by unilateral bearing 4, rotating shaft 3 drives rotating forward bevel gear 7 to drive cone pinion 9 to rotate, and then drive drill bit 2 rotary drilling, when rotation change-over key 11 also oppositely moves axially, positioning tooth 16 on reversing cover 12 passes through hole and is positioned at housing 1 outside, the through hole that positioning tooth 16 matches with it misplaces, locating piece 15 fastens with the positioning convex point 13 of housing 1 inwall, reversion bevel gear 8 is meshed with cone pinion 9, button puts trigger 14 repeatedly, thus drill bit 2 reversion can be driven to exit.
The present invention owing to adopting said structure, have structure simple, turn hole speed and the degree of depth is controlled, control the advantages such as convenient, operating time is short, patient suffering is little.

Claims (3)

1. a medical bone drill, comprise housing, rotating shaft, driving wheel, cone pinion, back-moving spring, trigger and drill bit, drill bit rear portion is fixedly connected with housing through bearing, housing is pistol-shaped, rotating shaft is provided with in housing, rotating shaft is provided with rotating forward bevel gear, driving wheel side is provided with cone pinion, cone pinion is fixedly connected with drill bit, trigger is connected with housing through back-moving spring, it is characterized in that being provided with unilateral bearing and rotating forward bevel gear, rotating shaft two ends are connected with housing respectively, rotating shaft is provided with unilateral bearing, unilateral bearing is fixed in driving wheel, unilateral bearing is fixed with change-speed gearing, driving wheel lower end is fixedly connected with trigger, trigger upper end is provided with driven wheel, driven wheel is hinged through fulcrum and housing, driven wheel side is fixedly connected with trigger, opposite side is meshed with change-speed gearing, driving tooth bar is provided with between trigger and driven wheel, tooth bar is driven to be meshed with driven wheel, tooth bar lower end is driven to be provided with glidepath, tooth bar outer end is driven to be fixedly connected with trigger, the inner is connected with housing through back-moving spring, trigger upper end is provided with slide rail, sliding way is provided with bottom the gun barrel of housing, glide path is provided with in the pikestaff of housing, trigger upper end is slidably connected through upper slide rail and sliding way, bottom is slidably connected through driving the glidepath on tooth bar and glide path.
2. a kind of medical bone drill according to claim 1, it is characterized in that rotating shaft is provided with inversion set, inversion set comprises reversion bevel gear, reversing cover and change-over key, reversion bevel gear is located at the other end of rotating shaft, reversion bevel gear is corresponding with rotating forward bevel gear, rotating shaft one end is connected with housing through bearing, the other end is connected with change-over key through reversing cover, locating piece is shown at reversing cover two ends respectively Circle-Array, intermediate circumference array has positioning tooth, housing is provided with the through hole matched passed for reversing cover and positioning tooth, inner walls and outer wall are respectively equipped with the positioning convex point matched with locating piece, the locating piece of reversing cover one end is positioned at enclosure interior, other end locating piece is positioned at hull outside, when the positioning tooth on reversing cover is through through hole when being positioned at enclosure interior, the through hole that positioning tooth matches with it is rotary shifted, locating piece on reversing cover and the positioning convex point of housing exterior walls fasten, cone pinion is meshed with rotating forward bevel gear, drive drill bit to rotate forward to hole, when the positioning tooth on reversing cover is through through hole when being positioned at hull outside, the through hole that positioning tooth matches with it is rotary shifted, locating piece on reversing cover and the positioning convex point of inner walls fasten, cone pinion is meshed with reversion bevel gear, drive drill bit reversely rotates.
3. a kind of medical bone drill according to claim 1, depth localization cover is arranged with outside the gun barrel that it is characterized in that housing, depth localization cover is by front protection face, upper protection face, left protection face and right protection face are mutually permanently connected and form, front protection face is provided with the through hole that drill bit passes, left protection face and right protection face lower end are provided with shifting sledge, left protection face and right protection face are provided with positioning through hole, the corresponding shifting sledge in gun barrel lower end of housing is provided with mobile slideway, positioning through hole is elongated, and parallel with shifting sledge, depth localization cover is fixedly connected with housing with the positioning through hole on right protection face through left protection face through bolt.
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CN109805981B (en) * 2017-11-22 2024-02-27 苏州微创骨科医疗工具有限公司 Medical tool
CN110522493B (en) * 2019-08-14 2022-05-03 蚌埠医学院第一附属医院 Skull milling cutter for craniotomy

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