CN202776466U - Medical bone drill - Google Patents
Medical bone drill Download PDFInfo
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- CN202776466U CN202776466U CN 201220519713 CN201220519713U CN202776466U CN 202776466 U CN202776466 U CN 202776466U CN 201220519713 CN201220519713 CN 201220519713 CN 201220519713 U CN201220519713 U CN 201220519713U CN 202776466 U CN202776466 U CN 202776466U
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Abstract
The utility model relates to the technical field of medical equipment, and particularly relates to a medical bone drill. The medical bone drill comprises a shell and a drill bit and is characterized by being provided with a rotary shaft, a one-way bearing, a drive wheel, a forward rotation bevel gear, a bevel pinion, a reset spring and a trigger, wherein the rear part of the drill bit is fixedly connected with a shell through a bearing; the shell is in a pistol shape; the rotary shaft is arranged in the shell; the forward rotation bevel gear and the one-way bearing are arranged on the rotary shaft; the two ends of the rotary shaft are connected with the shell respectively; the one-way bearing is fixed in the drive wheel; the bevel pinion is arranged corresponding to one side of 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. By adopting the structure, the medical bone drill provided by the utility model has the advantages of simple structure, controllable drilling speed and depth, convenience in control, short operation time, little pain of patients and the like.
Description
Technical field
This utility model relates to technical field of medical instruments, specifically a kind of medical bone drill.
Background technology
At present, in clinical operation, the bone drill that uses 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 all are located in the 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; Need to use than great strength during bradawl boring, and speed is too slow, namely wastes operating time, causes suffering to the patient again.And the depth localization device that these three kinds of bone drills adopt pulls out of hole moving with drill bit one, abrade easily epidermis.
Summary of the invention
The purpose of this utility model 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, the patient suffering is little medical bone drill.
The technical scheme that its technical problem that solves this utility model adopts 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, the forward bevel gear, cone pinion, back-moving spring and trigger, the drill bit rear portion is fixedly connected with housing through bearing, housing is pistol-shaped, be provided with rotating shaft in the housing, rotating shaft is provided with forward bevel gear and unilateral bearing, the rotating shaft two ends are connected with housing respectively, and unilateral bearing is fixed in the driving wheel, and corresponding driving wheel one side is provided with cone pinion, cone pinion is fixedly connected with drill bit, the driving wheel lower end is fixedly connected with trigger, and trigger is connected with housing through back-moving spring, so that trigger automatically resets under the tension force effect of back-moving spring.
This utility model can be fixed with change-speed gearing at unilateral bearing, the 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 the driven wheel rotation, driven wheel drives the change-speed gearing rotation, change-speed gearing drives rotating shaft, the rotation of forward bevel gear by unilateral bearing, and then drives the cone pinion rotation, and cone pinion drives drill bit and carries out operation.
This utility model can be provided with the driving tooth bar between trigger and driven wheel, driving tooth bar is meshed with driven wheel, drive the tooth bar lower end and be provided with glidepath, drive the tooth bar outer end and be fixedly connected with trigger, the inner is connected with housing through back-moving spring, and the trigger upper end is provided with slide rail, the gun barrel bottom of housing is provided with sliding way, be provided with glide path in the pikestaff of housing, the trigger upper end is slidingly connected through upper slide rail and sliding way, and glidepath and the glide path of bottom through driving on the tooth bar is slidingly connected.
This utility model also can be provided with inversion set in rotating shaft, the counter-rotating rotating shaft comprises the counter-rotating bevel gear, reversing cover and change-over key, the counter-rotating bevel gear is located at the other end of rotating shaft, the counter-rotating bevel gear is corresponding with the forward bevel gear, rotating shaft one end is connected with housing through bearing, the other end passes reversing cover and is connected with change-over key, locating piece is shown at reversing cover two ends respectively Circle-Array, the intermediate circumference array has positioning tooth, housing is provided with the through hole that matches that supplies reversing cover and positioning tooth to pass, inner walls and outer wall are provided with the positioning convex point that matches with locating piece, the rotation location that is used 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 the 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 the reversing cover and housing outer wall fastens, cone pinion is meshed with the forward bevel gear, the drive drill bit is rotated in the forward holes, when the positioning tooth on the 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 the reversing cover and the positioning convex point of inner walls fasten, cone pinion is meshed with the counter-rotating bevel gear, drives the drill bit reverse rotation.
This utility model can be provided with at the gun barrel of housing the depth localization cover, the 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 the gun barrel lower end of housing is provided with mobile slideway, positioning through hole is elongated, and parallel with shifting sledge, the depth localization cover passes left protection face through bolt and is fixedly connected with housing with positioning through hole on the right protection face, is beneficial to adjust the degree of depth of boring.
This utility model is owing to adopt said structure, have simple in structure, turn hole speed and the advantages such as the degree of depth is controlled, control convenient, operating time is short, the patient suffering is little.
Description of drawings
Fig. 1 is the structural representation of this utility model the first embodiment.
Fig. 2 is the structural representation of this utility model the second embodiment.
Fig. 3 is the structural representation of the third embodiment of this utility model.
Fig. 4 is the structural representation of the 4th kind of embodiment of this utility model.
Fig. 5 is the structural representation of the 5th kind of embodiment of this utility model.
Fig. 6 is the structural representation of the 6th kind of embodiment of this utility model.
Fig. 7 is the structural representation of the 7th kind of embodiment of this utility model.
Fig. 8 is respectively the structural representation of B-B top view among A-A top view among Fig. 2 and Fig. 3.
Fig. 9 is respectively the structural representation of D-D top view among the C-C top view of Fig. 4 and Fig. 6.
Figure 10 is that change-over key and reversing cover are installed in the structural representation in the rotating shaft.
Figure 11 is the structural representation of depth localization cover in this utility model.
Figure 12 be among Fig. 9 E to the structural representation of housing.
Figure 13 be among 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, counter-rotating 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 this utility model is further specified:
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 by left shell and right shell body to form, be provided with rotating shaft 3 in the housing 1, 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 the 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 the 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 passes left protection face 20 through bolt 25 and is fixedly connected with housing 1 with positioning through hole 23 on the right protection face 21, is beneficial to adjust the degree of depth of boring.This utility model is when clinical use, by adjusting bolt 25, mobile depth localization cover 17 is to the suitable position of housing 1, and the length that drill bit 2 is exposed is drilling depth, holds the handle on the 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 the rotating shaft rotation 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 by left shell and right shell body to form, be provided with rotating shaft 3 in the housing 1, 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 the 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, driving tooth bar 26 is meshed with driven wheel 6, drive tooth bar 26 lower ends and be provided with glidepath, driving tooth bar 26 outer ends is 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, be provided with glide path 28 in the pikestaff of housing 1, trigger 14 upper ends are slidingly connected through upper slide rail and sliding way 27, glidepath and the glide path 28 of bottom through driving on the tooth bar 26 is slidingly 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 the 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 passes left protection face 20 through bolt 25 and is fixedly connected with housing 1 with positioning through hole 23 on the right protection face 21, is beneficial to adjust the degree of depth of boring.This utility model is when clinical use, by adjusting bolt 25, mobile depth localization cover 17 is to the suitable position of housing 1, the length that drill bit 2 is exposed is drilling depth, hold the handle on the housing, button is put trigger 14 repeatedly, trigger drives driving tooth bar 26 and moves 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, counter-rotating 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 by left shell and right shell body to form, be provided with rotating shaft 3 in the housing 1, be provided with successively forward bevel gear 7 in the rotating shaft 3, unilateral bearing 4 and counter-rotating bevel gear 8, rotating shaft 3 one ends are connected with housing 1, the other end passes reversing cover 12 and is connected with change-over key 11, unilateral bearing is fixed in the 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, the intermediate circumference array has positioning tooth 16, housing 1 is provided with the through hole that matches 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, the rotation location that is used for reversing cover 12, and then prevent that rotating shaft 3 from moving axially, the locating piece 15 of reversing cover 12 1 ends is positioned at housing 1 inside, other end locating piece 29 is positioned at housing 1 outside, when the positioning tooth 16 on the reversing cover 12 passes through hole and be 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, drive drill bit 2 is rotated in the forward holes, when the positioning tooth 16 on the reversing cover 12 passes through hole and be 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 1 ends fastens with the positioning convex point 13 of shell 1 inwall, cone pinion 9 is meshed with counter-rotating 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, the lower end is fixedly connected with trigger 14, this utility model is when clinical use, the handle of hand-held housing 1, press change-over key 11, after positioning tooth 16 on the reversing cover 12 passes through hole and is positioned at housing 1 inside, rotation change-over key 11, the through hole dislocation that positioning tooth 16 matches with it, 29 positioning convex points 30 with housing 1 outer wall of locating piece fasten, forward bevel gear 7 is meshed with cone pinion 9, button is put trigger 14 repeatedly, driven wheel 6 on the 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 drives drill bit 2 rotary drillings.Rotation change-over key 11 also oppositely moves axially, positioning tooth 16 on the 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, 15 positioning convex points 13 with housing 1 inwall of locating piece fasten, counter-rotating bevel gear 8 is meshed with cone pinion 9, button is put trigger 14 repeatedly, driven wheel 6 on the 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 counter-rotating bevel gear 8 and cone pinion 9 rotations, and then drive drill bit 2 anti-boring are withdrawed from.
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, counter-rotating 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 by left shell and right shell body to form, be provided with rotating shaft 3 in the housing 1, be provided with successively forward bevel gear 7 in the rotating shaft 3, unilateral bearing 4 and counter-rotating bevel gear 8, rotating shaft 3 one ends are connected with housing 1, the other end passes reversing cover 12 and is connected with change-over key 11, unilateral bearing is fixed in the 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, the intermediate circumference array has positioning tooth 16, housing 1 is provided with the through hole that matches 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, the rotation location that is used for reversing cover 12, and then prevent that rotating shaft 3 from moving axially, the locating piece 15 of reversing cover 12 1 ends is positioned at housing 1 inside, other end locating piece 29 is positioned at housing 1 outside, when the positioning tooth 16 on the reversing cover 12 passes through hole and be 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, drive drill bit 2 is rotated in the forward holes, when the positioning tooth 16 on the reversing cover 12 passes through hole and be 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 1 ends fastens with the positioning convex point 13 of housing 1 inwall, cone pinion 9 is meshed with counter-rotating 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, the 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, and left protection face 20 and right protection face 21 are provided with positioning through hole 23, and the corresponding shifting sledge in the 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 passes left protection face 20 through bolt 25 and is fixedly connected with housing 1 with positioning through hole 23 on the right protection face 21, is beneficial to adjust the degree of depth of boring, this utility model is when clinical use, the handle of hand-held housing 1 is pressed change-over key 11, after the positioning tooth 16 on the reversing cover 12 passes through hole and is positioned at housing 1 inside, rotation change-over key 11, the through hole dislocation that positioning tooth 16 matches with it, 29 positioning convex points 30 with housing 1 outer wall of locating piece fasten, and forward bevel gear 7 is meshed with cone pinion 9, button is put trigger 14 repeatedly, driven wheel 6 on the trigger 14 drives change-speed gearing 5 rotations, and change-speed gearing 5 passes through unilateral bearing 4 and drives rotating shafts 3 rotations, and 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 the reversing cover 12 passes through hole and is positioned at housing 1 outside, and the through hole that positioning tooth 16 matches with it is rotary shifted, and 15 positioning convex points 13 with housing 1 inwall of locating piece fasten, counter-rotating bevel gear 8 is meshed with cone pinion 9, button is put trigger 14 repeatedly, and the driven wheel 6 on the trigger 14 drives change-speed gearing 5 rotations, and change-speed gearing 5 drives rotating shaft 3 rotations by unilateral bearing 4, rotating shaft 3 drives counter-rotating bevel gear 8 and cone pinion 9 rotations, and then drive drill bit 2 anti-boring are withdrawed from.
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, counter-rotating 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 by left shell and right shell body to form, be provided with rotating shaft 3 in the housing 1, be provided with successively forward bevel gear 7 in the rotating shaft 3, unilateral bearing 4 and counter-rotating bevel gear 8, rotating shaft 3 one ends are connected with housing 1, the other end passes reversing cover 12 and is connected with change-over key 11, unilateral bearing is fixed in the 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, the intermediate circumference array has positioning tooth 16, housing 1 is provided with the through hole that matches 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, the rotation location that is used for reversing cover 12, and then prevent that rotating shaft 3 from moving axially, the locating piece 15 of reversing cover 12 1 ends is positioned at housing 1 inside, other end locating piece 29 is positioned at housing 1 outside, when the positioning tooth 16 on the reversing cover 12 passes through hole and be 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, drive drill bit 2 is rotated in the forward holes, when the positioning tooth 16 on the reversing cover 12 passes through hole and be 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 1 ends fastens with the positioning convex point 13 of housing 1 inwall, cone pinion 9 is meshed with counter-rotating 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, the lower end is meshed with driving tooth bar 26, drive tooth bar 26 lower ends and be provided with glidepath, driving tooth bar 26 outer ends is 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, is provided with glide path 28 in the pikestaff of housing 1, and trigger 14 upper ends are slidingly connected through upper slide rail and sliding way 27, glidepath and the glide path 28 of bottom through driving on the tooth bar 26 is slidingly connected, this utility model is when clinical use, and hand-held housing 1 handle is pressed change-over key 11, after positioning tooth 16 on the reversing cover 12 passes through hole and is positioned at 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, and trigger 14 moves back and forth along sliding way 27 and glide path 28, drives driving tooth bar 26 and moves back and forth, drive tooth bar 26 and drive driven wheel 6 rotations, driven wheel 6 drives change-speed gearing 5 rotations, and change-speed gearing 5 drives rotating shaft 3 rotations by unilateral bearing 4, and rotating shaft 3 drives forward bevel gear 7 and drives cone pinion 9 rotations, and then drive drill bit 2 rotary drillings, when rotating change-over key 11 and oppositely moving axially, the positioning tooth 16 on the reversing cover 12 passes through hole and is positioned at housing 1 outside, the through hole dislocation that positioning tooth 16 matches with it, 15 positioning convex points 13 with housing 1 inwall of locating piece fasten, counter-rotating bevel gear 8 is meshed with cone pinion 9, and button is put trigger 14 repeatedly, withdraws from thereby can drive drill bit 2 counter-rotatings.
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, counter-rotating 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 by left shell and right shell body to form, be provided with rotating shaft 3 in the housing 1, be provided with successively forward bevel gear 7 in the rotating shaft 3, unilateral bearing 4 and counter-rotating bevel gear 8, rotating shaft 3 one ends are connected with housing 1, the other end passes reversing cover 12 and is connected with change-over key 11, unilateral bearing is fixed in the 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, the intermediate circumference array has positioning tooth 16, housing 1 is provided with the through hole that matches 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, the rotation location that is used for reversing cover 12, and then prevent that rotating shaft 3 from moving axially, the locating piece 15 of reversing cover 12 1 ends is positioned at housing 1 inside, other end locating piece 29 is positioned at housing 1 outside, when the positioning tooth 16 on the reversing cover 12 passes through hole and be 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, drive drill bit 2 is rotated in the forward holes, when the positioning tooth 16 on the reversing cover 12 passes through hole and be 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 1 ends fastens with the positioning convex point 13 of housing 1 inwall, cone pinion 9 is meshed with counter-rotating 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, the lower end is meshed with driving tooth bar 26, drive tooth bar 26 lower ends and be provided with glidepath, driving tooth bar 26 outer ends is 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, be provided with glide path 28 in the pikestaff of housing 1, trigger 14 upper ends are slidingly connected through upper slide rail and sliding way 27, glidepath and the glide path 28 of bottom through driving on the tooth bar 26 is slidingly connected, this utility model 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 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 the 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 passes left protection face 20 through bolt 25 and is fixedly connected with housing 1 with positioning through hole 23 on the right protection face 21, is beneficial to adjust the degree of depth of boring.This utility model is when clinical use, by adjusting bolt 25, mobile depth localization cover 17 is to the suitable position of housing 1, the length that drill bit 2 is exposed is drilling depth, hand-held housing 1 handle, press change-over key 11, after positioning tooth 16 on the reversing cover 12 passes through hole and is positioned at 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, driving driving tooth bar 26 moves back and forth, drive tooth bar 26 and 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 and drives 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 the reversing cover 12 passes through hole and is positioned at housing 1 outside, the through hole dislocation that positioning tooth 16 matches with it, 15 positioning convex points 13 with housing 1 inwall of locating piece fasten, counter-rotating bevel gear 8 is meshed with cone pinion 9, and button is put trigger 14 repeatedly, withdraws from thereby can drive drill bit 2 counter-rotatings.
This utility model is owing to adopt said structure, have simple in structure, turn hole speed and the advantages such as the degree of depth is controlled, control convenient, operating time is short, the patient suffering is little.
Claims (5)
1. medical bone drill, comprise housing and drill bit, it is characterized in that being provided with rotating shaft, unilateral bearing, driving wheel, the forward bevel gear, cone pinion, back-moving spring and trigger, the drill bit rear portion is fixedly connected with housing through bearing, housing is pistol-shaped, be provided with rotating shaft in the housing, rotating shaft is provided with forward bevel gear and unilateral bearing, the rotating shaft two ends are connected with housing respectively, unilateral bearing is fixed in the driving wheel, and corresponding driving wheel one side is provided with cone pinion, and cone pinion is fixedly connected with drill bit, the driving wheel lower end is fixedly connected with trigger, and 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 on the unilateral bearing change-speed gearing, the 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 the driven wheel driving tooth bar, driving tooth bar is meshed with driven wheel, drive the tooth bar lower end and be provided with glidepath, driving the tooth bar outer end is fixedly connected with trigger, the inner is connected with housing through back-moving spring, the trigger upper end is provided with slide rail, the gun barrel bottom of housing is provided with sliding way, be provided with glide path in the pikestaff of housing, the trigger upper end is slidingly connected through upper slide rail and sliding way, and glidepath and the glide path of bottom through driving on the tooth bar is slidingly 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 the counter-rotating bevel gear, reversing cover and change-over key, the counter-rotating bevel gear is located at the other end of rotating shaft, the counter-rotating bevel gear is corresponding with the forward bevel gear, rotating shaft one end is connected with housing through bearing, the other end passes reversing cover and is connected with change-over key, locating piece is shown at reversing cover two ends respectively Circle-Array, the intermediate circumference array has positioning tooth, housing is provided with the through hole that matches that supplies reversing cover and positioning tooth to pass, inner walls and outer wall are respectively equipped with the positioning convex point that matches 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 the 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 the reversing cover and housing outer wall fastens, cone pinion is meshed with the forward bevel gear, the drive drill bit is rotated in the forward holes, when the positioning tooth on the 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 the reversing cover and the positioning convex point of inner walls fasten, cone pinion is meshed with the counter-rotating bevel gear, drives the drill bit reverse rotation.
5. a kind of medical bone drill according to claim 1, the gun barrel that it is characterized in that housing is arranged with the depth localization cover outward, the 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 the gun barrel lower end of housing is provided with mobile slideway, positioning through hole is elongated, and parallel with shifting sledge, the depth localization cover passes left protection face through bolt and is fixedly connected with housing with positioning through hole on the right protection face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220519713 CN202776466U (en) | 2012-09-07 | 2012-10-11 | Medical bone drill |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220452715.7 | 2012-09-07 | ||
| CN201220452715 | 2012-09-07 | ||
| CN 201220519713 CN202776466U (en) | 2012-09-07 | 2012-10-11 | Medical bone drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202776466U true CN202776466U (en) | 2013-03-13 |
Family
ID=47803827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220519713 Expired - Fee Related CN202776466U (en) | 2012-09-07 | 2012-10-11 | Medical bone drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202776466U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103654910A (en) * | 2012-09-07 | 2014-03-26 | 朱亮洪 | Medical bone drill |
| CN107307893A (en) * | 2017-07-04 | 2017-11-03 | 翟薇 | A kind of Gastrolith lithoriptor |
-
2012
- 2012-10-11 CN CN 201220519713 patent/CN202776466U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103654910A (en) * | 2012-09-07 | 2014-03-26 | 朱亮洪 | Medical bone drill |
| CN103654910B (en) * | 2012-09-07 | 2016-03-16 | 威海威创医疗器械有限公司 | Medical bone drill |
| CN107307893A (en) * | 2017-07-04 | 2017-11-03 | 翟薇 | A kind of Gastrolith lithoriptor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20151011 |
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| EXPY | Termination of patent right or utility model |