CN103654910A - Medical bone drill - Google Patents
Medical bone drill Download PDFInfo
- Publication number
- CN103654910A CN103654910A CN201210383808.3A CN201210383808A CN103654910A CN 103654910 A CN103654910 A CN 103654910A CN 201210383808 A CN201210383808 A CN 201210383808A CN 103654910 A CN103654910 A CN 103654910A
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- China
- Prior art keywords
- housing
- trigger
- rotating shaft
- protection face
- hole
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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
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
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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
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
- A61B17/1622—Drill handpieces
- A61B17/1624—Drive mechanisms therefor
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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
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
- A61B17/1633—Sleeves, i.e. non-rotating parts surrounding the bit shaft, e.g. the sleeve forming a single unit with the bit shaft
Abstract
The invention relates to the technical field of medical instruments, in particular to a medical bone drill. The medical bone drill comprises a shell and a drill bit. The medical bone drill is characterized in that a rotating shaft, a one-way bearing, a drive wheel, a forward bevel gear, a bevel pinion, a reset spring and a trigger are arranged; the back portion of the drill bit is fixedly connected with the shell through the bearing, the shell is in a gun shape, the rotating shaft is arranged in the shell, the forward bevel gear and the one-way bearing are arranged on the rotating shaft, the two ends of the rotating shaft are respectively connected with the shell, the one-way bearing is fixed in the drive wheel, the bevel pinion is arranged on one side corresponding to the drive wheel, the bevel pinion is fixedly connected with the drill bit, the lower end of the drive wheel is fixedly connected with the trigger, and the trigger is connected with the shell through the reset spring. Through the adoption of the structure, the medical bone drill has the advantages of being simple in structure, controllable in drilling speed and drilling depth, convenient to control and short in operation time, and pains of patients are fewer.
Description
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 using has electric bone drill, hand bone drill and bradawl to bore three kinds, electric bone drill is comprised 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, easily operate miss; Hand bone drill needs two hand operateds, and operation is inconvenience very; During bradawl boring, need to use compared with great strength, and speed is too slow, wastes operating time, causes suffering again to patient.And the depth localization device that these three kinds of bone drills adopt pulls out of hole moving 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 simple in structure, turn hole speed and the degree of depth is controlled, control convenient, operating time is short, patient suffering is little medical bone drill.
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, 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, in housing, be provided with rotating shaft, rotating shaft is provided with 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 one 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, so that trigger automatically resets under the tension force effect of back-moving spring.
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 one 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 rotation, change-speed gearing drives rotating shaft, forward bevel gear to rotate by unilateral bearing, and then drives cone pinion rotation, 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, drive tooth bar to be meshed with driven wheel, drive tooth bar lower end 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, the gun barrel bottom of housing is provided with sliding way, in the pikestaff of housing, be provided with glide path, trigger upper end is slidably connected through upper slide rail and sliding way, and bottom is through driving glidepath and glide path on tooth bar to be slidably connected.
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 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 matching that supplies reversing cover and positioning tooth to pass, inner walls and outer wall are provided with the positioning convex point matching with locating piece, rotation location for reversing cover, and then prevent that 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 passes through hole and is positioned at enclosure interior, the through hole that positioning tooth matches with it is rotary shifted, the positioning convex point of the locating piece on reversing cover and housing outer wall fastens, cone pinion is meshed with forward bevel gear, driving drill bit to be rotated in the forward holes, when the positioning tooth on reversing cover passes through hole and is 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, the reverse rotation of drive drill bit.
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 adjust the degree of depth of boring.
The present invention is owing to adopting said structure, have simple in structure, turn hole speed and the degree of depth is controlled, control the advantages such as convenient, operating time is short, patient suffering is little.
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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 4th kind of embodiment of the present invention.
Fig. 5 is the structural representation of the 5th kind of embodiment of the present invention.
Fig. 6 is the structural representation of the 6th kind of embodiment of the present invention.
Fig. 7 is the structural representation of the 7th kind of embodiment of the present invention.
Fig. 8 is respectively the structural representation of B-B top view in A-A top view in Fig. 2 and Fig. 3.
Fig. 9 is respectively the structural representation of D-D top view in the C-C top view of Fig. 4 and Fig. 6.
Figure 10 is that change-over key and reversing cover are arranged on the structural representation 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, 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.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described:
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, forward bevel gear 7, cone pinion 9, back-moving spring 10 and trigger 14, drill bit 2 rear portions are fixedly connected with housing 1 through bearing, housing 1 is pistol-shaped, housing is to be fixed and formed by left shell and right shell body, in housing 1, be provided with rotating shaft 3, rotating shaft 3 is provided with 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 one sides are provided with cone pinion 9, cone pinion 9 is fixedly connected with drill bit 2, change-speed gearing 5 belows are provided with driven wheel 6, driven wheel 6 is meshed with change-speed gearing 5, driven wheel 6 lower ends are fixedly connected with trigger 14, trigger 14 is connected with housing 1 through back-moving spring 10, so that trigger 14 automatically resets under the tension force effect of back-moving spring 10, the gun barrel of housing 1 is arranged with depth localization cover 17 outward, 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 ends 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 adjust the degree of depth of boring.The present invention is when clinical use, by adjusting bolt 25, mobile depth localization cover 17 is to the suitable position of housing 1, and making the length that drill bit 2 exposes is drilling depth, holds the handle on housing, button is put trigger repeatedly, trigger drives driven wheel 6 rotations, and driven wheel 6 drives change-speed gearing 5 rotations, and change-speed gearing drives rotating shaft to rotate by unilateral bearing, rotating shaft drives 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, forward bevel gear 7, cone pinion 9, back-moving spring 10 and trigger 14, drill bit 2 rear portions are fixedly connected with housing 1 through bearing, housing 1 is pistol-shaped, housing is to be fixed and formed by left shell and right shell body, in housing 1, be provided with rotating shaft 3, rotating shaft 3 is provided with 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 one sides are provided with cone pinion 9, cone pinion 9 is fixedly connected with drill bit 2, change-speed gearing 5 belows are provided with driven wheel 6, driven wheel 6 is meshed with change-speed gearing 5, drive tooth bar 26 to be meshed with driven wheel 6, drive tooth bar 26 lower ends to be provided with glidepath, drive tooth bar 26 outer ends to be fixedly connected with trigger 14, the inner is connected with housing 1 through back-moving spring 10, trigger 14 upper ends are provided with slide rail, the gun barrel bottom of housing 1 is provided with sliding way 27, in the pikestaff of housing 1, be provided with glide path 28, trigger 14 upper ends are slidably connected through upper slide rail and sliding way 27, bottom is through driving glidepath and glide path 28 on tooth bar 26 to be slidably connected, the gun barrel of housing 1 is arranged with depth localization cover 17 outward, 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 ends 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 adjust the degree of depth of boring.The present invention is when clinical use, by adjusting bolt 25, mobile depth localization cover 17 is to the suitable position of housing 1, making the length that drill bit 2 exposes is drilling depth, hold the handle on housing, button is put trigger 14 repeatedly, trigger drives and drives tooth bar 26 to move back and forth, drive 6 rotations of rack drives driven wheel, driven wheel 6 drives change-speed gearing 5 rotations, change-speed gearing 5 drives rotating shaft 3 rotations by unilateral bearing 4, and rotating shaft 3 drives forward bevel gear 7 and cone pinion 9 rotations, and then drives drill bit 2 rotary drillings.
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, 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 portions are fixedly connected with housing 1 through bearing, housing 1 is pistol-shaped, housing is to be fixed and formed by left shell and right shell body, in housing 1, be provided with rotating shaft 3, in rotating shaft 3, be provided with successively forward bevel gear 7, unilateral bearing 4 and reversion bevel gear 8, rotating shaft 3 one end are 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 one sides are 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 matching that supplies reversing cover 12 and positioning tooth 16 to pass, housing 1 inner and outer wall is respectively equipped with and locating piece 15, 29 positioning convex points that match 13, 30, rotation location for reversing cover 12, and then prevent that rotating shaft 3 from moving axially, the locating piece 15 of reversing cover 12 one end is positioned at housing 1 inside, other end locating piece 29 is positioned at housing 1 outside, 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 ends fastens with the positioning convex point 30 of shell 1 outer wall, cone pinion 9 is meshed with forward bevel gear 7, driving drill bit 2 to be rotated in the forward holes, 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, drive drill bit 2 reverse rotations, change-speed gearing 5 belows are provided with driven wheel 6, driven wheel 6 upper ends are meshed with change-speed gearing 5, lower end is fixedly connected with trigger 14, the present invention is when clinical use, the hands handle of hand-held housing 1, press change-over key 11, positioning tooth 16 on reversing cover 12 passes through hole and is positioned at behind housing 1 inside, rotation change-over key 11, the through hole dislocation that positioning tooth 16 matches with it, 29 of locating pieces fasten with the positioning convex point 30 of housing 1 outer wall, forward bevel gear 7 is meshed with cone pinion 9, button is put trigger 14 repeatedly, driven wheel 6 on trigger 14 drives change-speed gearing 5 rotations, change-speed gearing 5 drives rotating shaft 3 rotations by unilateral bearing 4, rotating shaft 3 drives forward bevel gear 7 and cone pinion 9 rotations, and then drive drill bit 2 rotary drillings.Rotation change-over key 11 also oppositely moves axially, positioning tooth 16 on reversing cover 12 is through through hole and be positioned at housing 1 outside, the through hole that positioning tooth 16 matches with it is rotary shifted, 15 of locating pieces fasten with the positioning convex point 13 of housing 1 inwall, reversion bevel gear 8 is meshed with cone pinion 9, button is put trigger 14 repeatedly, driven wheel 6 on trigger 14 drives change-speed gearing 5 rotations, change-speed gearing 5 drives rotating shaft 3 rotations by unilateral bearing 4, rotating shaft 3 drives reversion bevel gear 8 and cone pinion 9 rotations, and then drives anti-the boring of drill bit 2 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, 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 portions are fixedly connected with housing 1 through bearing, housing 1 is pistol-shaped, housing is to be fixed and formed by left shell and right shell body, in housing 1, be provided with rotating shaft 3, in rotating shaft 3, be provided with successively forward bevel gear 7, unilateral bearing 4 and reversion bevel gear 8, rotating shaft 3 one end are 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 one sides are 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 matching that supplies reversing cover 12 and positioning tooth 16 to pass, housing 1 inner and outer wall is respectively equipped with and locating piece 15, 29 positioning convex points that match 13, 30, rotation location for reversing cover 12, and then prevent that rotating shaft 3 from moving axially, the locating piece 15 of reversing cover 12 one end is positioned at housing 1 inside, other end locating piece 29 is positioned at housing 1 outside, 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 ends fastens with the positioning convex point 30 of housing 1 outer wall, cone pinion 9 is meshed with forward bevel gear 7, driving drill bit 2 to be rotated in the forward holes, 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, drive drill bit 2 reverse rotations, change-speed gearing 5 belows are provided with driven wheel 6, driven wheel 6 upper ends are meshed with change-speed gearing 5, lower end is fixedly connected with trigger 14, the gun barrel of housing 1 is arranged with depth localization cover 17 outward, 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 ends 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 adjust the degree of depth of boring, the present invention is when clinical use, the hands handle of hand-held housing 1, press change-over key 11, positioning tooth 16 on reversing cover 12 passes through hole and is positioned at behind housing 1 inside, rotation change-over key 11, the through hole dislocation that positioning tooth 16 matches with it, 29 of locating pieces fasten with the positioning convex point 30 of housing 1 outer wall, forward bevel gear 7 is meshed with cone pinion 9, button is put trigger 14 repeatedly, driven wheel 6 on trigger 14 drives change-speed gearing 5 rotations, change-speed gearing 5 drives rotating shaft 3 rotations by unilateral bearing 4, rotating shaft 3 drives forward bevel gear 7 and cone pinion 9 rotations and then drive drill bit 2 rotary drillings, rotation change-over key 11 also oppositely moves axially, positioning tooth 16 on reversing cover 12 is through through hole and be positioned at housing 1 outside, the through hole that positioning tooth 16 matches with it is rotary shifted, 15 of locating pieces fasten with the positioning convex point 13 of housing 1 inwall, reversion bevel gear 8 is meshed with cone pinion 9, button is put trigger 14 repeatedly, driven wheel 6 on trigger 14 drives change-speed gearing 5 rotations, change-speed gearing 5 drives rotating shaft 3 rotations by unilateral bearing 4, rotating shaft 3 drives reversion bevel gear 8 and cone pinion 9 rotations, and then drive anti-the boring of drill bit 2 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, 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 portions are fixedly connected with housing 1 through bearing, housing 1 is pistol-shaped, housing is to be fixed and formed by left shell and right shell body, in housing 1, be provided with rotating shaft 3, in rotating shaft 3, be provided with successively forward bevel gear 7, unilateral bearing 4 and reversion bevel gear 8, rotating shaft 3 one end are 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 one sides are 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 matching that supplies reversing cover 12 and positioning tooth 16 to pass, housing 1 inner and outer wall is respectively equipped with and locating piece 15, 29 positioning convex points that match 13, 30, rotation location for reversing cover 12, and then prevent that rotating shaft 3 from moving axially, the locating piece 15 of reversing cover 12 one end is positioned at housing 1 inside, other end locating piece 29 is positioned at housing 1 outside, 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 ends fastens with the positioning convex point 30 of housing 1 outer wall, cone pinion 9 is meshed with forward bevel gear 7, driving drill bit 2 to be rotated in the forward holes, 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, drive drill bit 2 reverse rotations, change-speed gearing 5 belows are provided with driven wheel 6, driven wheel 6 upper ends are meshed with change-speed gearing 5, lower end is meshed with driving tooth bar 26, drive tooth bar 26 lower ends to be provided with glidepath, drive tooth bar 26 outer ends to be fixedly connected with trigger 14, the inner is connected with housing 1 through back-moving spring 10, trigger 14 upper ends are provided with slide rail, the gun barrel bottom of housing 1 is provided with sliding way 27, in the pikestaff of housing 1, be provided with glide path 28, trigger 14 upper ends are slidably connected through upper slide rail and sliding way 27, bottom is through driving glidepath and glide path 28 on tooth bar 26 to be slidably connected, the present invention is when clinical use, hand-held housing 1 hands handle, press change-over key 11, positioning tooth 16 on reversing cover 12 passes through hole and is positioned at behind housing 1 inside, rotation change-over key 11, the through hole dislocation that positioning tooth 16 matches with it, the locating piece 29 of reversing cover outer end fastens with the positioning convex point 30 of housing 1 outer wall, forward bevel gear 7 is meshed with cone pinion 9, button is put 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, drive tooth bar 26 to drive driven wheel 6 rotations, driven wheel 6 drives change-speed gearing 5 rotations, change-speed gearing 5 drives rotating shaft 3 rotations by unilateral bearing 4, rotating shaft 3 drives forward bevel gear 7 to drive cone pinion 9 rotations, and then drive drill bit 2 rotary drillings, when rotation change-over key 11 also oppositely moves axially, positioning tooth 16 on reversing cover 12 is through through hole and be positioned at housing 1 outside, the through hole dislocation that positioning tooth 16 matches with it, 15 of locating pieces fasten with the positioning convex point 13 of housing 1 inwall, reversion bevel gear 8 is meshed with cone pinion 9, button is put trigger 14 repeatedly, thereby can drive drill bit 2 reversions 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, 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 portions are fixedly connected with housing 1 through bearing, housing 1 is pistol-shaped, housing is to be fixed and formed by left shell and right shell body, in housing 1, be provided with rotating shaft 3, in rotating shaft 3, be provided with successively forward bevel gear 7, unilateral bearing 4 and reversion bevel gear 8, rotating shaft 3 one end are 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 one sides are 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 matching that supplies reversing cover 12 and positioning tooth 16 to pass, housing 1 inner and outer wall is respectively equipped with and locating piece 15, 29 positioning convex points that match 13, 30, rotation location for reversing cover 12, and then prevent that rotating shaft 3 from moving axially, the locating piece 15 of reversing cover 12 one end is positioned at housing 1 inside, other end locating piece 29 is positioned at housing 1 outside, 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 ends fastens with the positioning convex point 30 of housing 1 outer wall, cone pinion 9 is meshed with forward bevel gear 7, driving drill bit 2 to be rotated in the forward holes, 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, drive drill bit 2 reverse rotations, change-speed gearing 5 belows are provided with driven wheel 6, driven wheel 6 upper ends are meshed with change-speed gearing 5, lower end is meshed with driving tooth bar 26, drive tooth bar 26 lower ends to be provided with glidepath, drive tooth bar 26 outer ends to be fixedly connected with trigger 14, the inner is connected with housing 1 through back-moving spring 10, trigger 14 upper ends are provided with slide rail, the gun barrel bottom of housing 1 is provided with sliding way 27, in the pikestaff of housing 1, be provided with glide path 28, trigger 14 upper ends are slidably connected through upper slide rail and sliding way 27, bottom is through driving glidepath and glide path 28 on tooth bar 26 to be slidably connected, the present invention can be arranged with at the gun barrel of housing 1 depth localization cover 17 outward, 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 ends 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 adjust the degree of depth of boring.The present invention is when clinical use, by adjusting bolt 25, mobile depth localization cover 17 is to the suitable position of housing 1, making the length that drill bit 2 exposes is drilling depth, hand-held housing 1 hands handle, press change-over key 11, positioning tooth 16 on reversing cover 12 passes through hole and is positioned at behind housing 1 inside, rotation change-over key 11, the through hole dislocation that positioning tooth 16 matches with it, the locating piece 29 of reversing cover outer end fastens with the positioning convex point 30 of housing 1 outer wall, forward bevel gear 7 is meshed with cone pinion 9, button is put 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, drive tooth bar 26 to drive driven wheel 6 rotations, driven wheel 6 drives change-speed gearing 5 rotations, change-speed gearing 5 drives rotating shaft 3 rotations by unilateral bearing 4, rotating shaft 3 drives forward bevel gear 7 to drive cone pinion 9 rotations, and then drive drill bit 2 rotary drillings, when rotation change-over key 11 also oppositely moves axially, positioning tooth 16 on reversing cover 12 is through through hole and be positioned at housing 1 outside, the through hole dislocation that positioning tooth 16 matches with it, 15 of locating pieces fasten with the positioning convex point 13 of housing 1 inwall, reversion bevel gear 8 is meshed with cone pinion 9, button is put trigger 14 repeatedly, thereby can drive drill bit 2 reversions to exit.
The present invention is owing to adopting said structure, have simple in structure, 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 (5)
1. a medical bone drill, comprise housing and drill bit, it is characterized in that being provided with rotating shaft, unilateral bearing, driving wheel, 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, in housing, be provided with rotating shaft, rotating shaft is provided with 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 one 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.
2. a kind of medical bone drill according to claim 1, it is characterized in that being fixed with change-speed gearing on unilateral bearing, trigger upper end is provided with driven wheel, and driven wheel is hinged through fulcrum and housing, driven wheel one side is fixedly connected with trigger, and opposite side is meshed with change-speed gearing.
3. a kind of medical bone drill according to claim 1, it is characterized in that being provided with between trigger and driven wheel driving tooth bar, drive tooth bar to be meshed with driven wheel, drive tooth bar lower end 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, trigger upper end is provided with slide rail, the gun barrel bottom of housing is provided with sliding way, in the pikestaff of housing, be provided with glide path, trigger upper end is slidably connected through upper slide rail and sliding way, and bottom is through driving glidepath and glide path on tooth bar to be slidably connected.
4. 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 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 matching that supplies reversing cover and positioning tooth to pass, inner walls and outer wall are respectively equipped with the positioning convex point matching 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 passes through hole and is positioned at enclosure interior, the through hole that positioning tooth matches with it is rotary shifted, the positioning convex point of the locating piece on reversing cover and housing outer wall fastens, cone pinion is meshed with forward bevel gear, driving drill bit to be rotated in the forward holes, when the positioning tooth on reversing cover passes through hole and is 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, the reverse rotation of drive drill bit.
5. a kind of medical bone drill according to claim 1, the gun barrel that it is characterized in that housing is arranged with depth localization cover outward, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210383808.3A CN103654910B (en) | 2012-09-07 | 2012-10-11 | Medical bone drill |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210327678 | 2012-09-07 | ||
| CN2012103276781 | 2012-09-07 | ||
| CN201210327678.1 | 2012-09-07 | ||
| CN201210383808.3A CN103654910B (en) | 2012-09-07 | 2012-10-11 | Medical bone drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103654910A true CN103654910A (en) | 2014-03-26 |
| CN103654910B CN103654910B (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210383808.3A Active CN103654910B (en) | 2012-09-07 | 2012-10-11 | Medical bone drill |
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| Country | Link |
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| CN (1) | CN103654910B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109805981A (en) * | 2017-11-22 | 2019-05-28 | 苏州微创骨科医疗工具有限公司 | Medical tool |
| CN110522493A (en) * | 2019-08-14 | 2019-12-03 | 蚌埠医学院第一附属医院 | A kind of operation of opening cranium skull milling cutter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109805981A (en) * | 2017-11-22 | 2019-05-28 | 苏州微创骨科医疗工具有限公司 | Medical tool |
| CN109805981B (en) * | 2017-11-22 | 2024-02-27 | 苏州微创骨科医疗工具有限公司 | Medical tool |
| CN110522493A (en) * | 2019-08-14 | 2019-12-03 | 蚌埠医学院第一附属医院 | A kind of operation of opening cranium skull milling cutter |
| 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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| Publication number | Publication date |
|---|---|
| CN103654910B (en) | 2016-03-16 |
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