CN112315538A

CN112315538A - Small medical bone saw

Info

Publication number: CN112315538A
Application number: CN202011067259.XA
Authority: CN
Inventors: 姚冬; 闻琦; 姚晓辉
Original assignee: Deqing Chuangying Machinery Technology Co Ltd
Current assignee: Deqing Chuangying Machinery Technology Co Ltd
Priority date: 2020-10-05
Filing date: 2020-10-05
Publication date: 2021-02-05

Abstract

The invention relates to the technical field of medical appliances, and discloses a small medical bone saw, which comprises a casing, wherein the left end of the casing is in threaded connection with a connector, the upper surface of the connector is provided with a connecting mechanism, a saw blade is arranged inside the connecting mechanism, a swinging mechanism is arranged inside the connector, the right side of the casing is in threaded connection with a rear shell, a motor is arranged inside the rear shell, a speed reducing mechanism is arranged inside the casing, the bottom of a handle shell is provided with a locking mechanism, and the left side of the handle shell is provided with a button mechanism. This small-size medical bone saw through planetary gear's connection transmission for sensitivity that can be more at the improvement rotational speed and the reduction speed has fine speed reduction effect, and more steady of during operation reduces the vibrational force of whole equipment, has the bearing capacity of high strength simultaneously, to the harder position of some skeletons, makes the saw bit at the during operation, cut more smooth and easy.

Description

Small medical bone saw

Technical Field

The invention relates to the technical field of medical appliances, in particular to a small medical bone saw.

Background

When orthopedic treatment is carried out, a bone saw is needed, the existing bone saw is simple in structure and does not have a speed reduction mechanism, so that when the saw blade is not used, the saw blade cannot be decelerated immediately, the use is unsafe, and meanwhile, the noise of a plurality of existing bone saws is large when the bone saw is used, the concentration of medical workers during work is seriously influenced, and therefore the small medical bone saw is provided for solving the problem.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a small medical bone saw, which solves the problems of slow speed reduction, high noise and high jitter.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a small-size medical bone saw, includes the casing, the left end threaded connection of casing has the connector, the upper surface of connector is provided with coupling mechanism, coupling mechanism's inside is provided with the saw bit, the inside of connector is provided with swing mechanism, the right side threaded connection of casing has the backshell, the motor has been placed to the inside of backshell, the inside of casing is provided with reduction gears, there is the handle shell lower surface of casing through bolted connection, the battery has been placed to the inside of handle shell, the bottom of handle shell is provided with locking mechanical system, the left side of handle shell is provided with button mechanism.

The surface of backshell has seted up the radiating groove, the right-hand member threaded connection of backshell has the back lid, the left side of back lid and the right side of motor contact each other.

Preferably, the swing mechanism comprises a swing frame, a connecting shaft is inserted into the upper surface of the swing frame, a fixed column is rotatably connected to the lower surface of the swing frame, the bottom of the fixed column is rotatably connected to the inside of the connecting head, and two anti-grinding plates are welded to the inner wall of the swing frame.

Preferably, the anti-grinding plate is made of high manganese alloy, the surface of the anti-grinding plate is connected with a rotating bearing in a sliding mode, an eccentric shaft is fixedly connected to the axis of the rotating bearing, and a connecting seat is inserted into the right end of the eccentric shaft in a splicing mode.

Preferably, the surfaces of the eccentric shaft and the connecting seat are fixedly connected with fixed bearings, the surface of the eccentric shaft is rotatably connected inside the casing, and the surface of the fixed bearing is fixedly connected with the inside of the casing.

Preferably, reduction gears is including drive gear, drive gear's surface toothing has four planetary gear, planetary gear's axle center department rotates and is connected with the planet axle, the left end welding of planet axle has the planet carrier, the inside fixed mounting of casing is connected with the gear sleeve, and four planetary gear's the surface and the inner wall intermeshing of gear sleeve, drive gear's axle center department and the output fixed connection of motor.

Preferably, the gear sleeve is made of alloy copper, and the left end of the planet carrier is fixedly connected with the right end of the connecting seat.

Preferably, coupling mechanism is including fixed cover, the lower fixed surface fixedly connected with fixed axle of fixed cover, the inside at the connector is connected in the surface rotation of fixed axle, peg graft in the inside of fixed cover on the surface of saw bit, the inside of fixed cover sliding connection has button and top tight spring respectively, the saw bit is located the button and blocks between the post, the top tight spring has been cup jointed on the surface of card post, the bottom of fixed axle and the top fixed connection of connecting axle.

Preferably, the button mechanism comprises a fixed box, a pressure knob is slidably connected inside the fixed box, a contraction spring is sleeved on the surface of the pressure knob, the right side of the fixed box is connected to the left side of the handle shell through a bolt, and the contraction spring is located between the fixed box and the handle shell.

Preferably, locking mechanical system is including flip, flip's lower surface sliding connection has the mortise lock, the inside sliding connection of mortise lock has two travelers, the both ends fixed connection of traveler is in flip's inside, the lower surface joint of mortise lock has the jam plate, flip's surface is rotated and is connected the lower surface at the handle shell, the right side welding of mortise lock has locking spring, locking spring is located flip's inside, the card hole has been seted up to the inner wall of handle shell.

Preferably, the lower surface of mortise lock has seted up T spout and locked groove respectively, the lower surface of jam plate rotates and is connected with the pull rod, the surface of pull rod has cup jointed little spring, little spring is located the below of mortise lock, the surperficial sliding connection of pull rod is in flip's inside.

(III) advantageous effects

Compared with the prior art, the invention provides a small medical bone saw, which has the following beneficial effects:

1. this small-size medical bone saw, through planetary gear's connection transmission, control motor that can be fine is to the output power of eccentric shaft, make and improve the rotational speed and reduce the sensitivity that speed can be more, fine speed reduction effect has, adopt planetary gear drive simultaneously, more steady during operation, reduce the vibrational force of whole equipment, the bearing capacity who has high strength simultaneously, to the harder position of some skeletons, make the saw bit at the during operation, keep its oscillating frequency can not change basically, make more smooth and easy of cutting.

2. This small-size medical bone saw, when the inside rotation of gear housing through four planetary gear, inside adoption be seal structure, have fine syllable-dividing effect to further reduction the noise that the gear rotation in-process of whole equipment in operating condition produced, indirect improvement medical personnel's the concentration in the use equipment in-process.

3. This small-size medical bone saw breaks away from the mounting hole of card post and saw bit through pressing the button, can carry out quick change to the saw bit, adapts to not unidimensional saw bit, and easy operation is swift.

4. This small-size medical bone saw, the multiunit fixing bearing through eccentric shaft surface design makes power transmission's in-process connecting seat and eccentric shaft's junction more stable, simultaneously because the eccentric shaft must have the pendulum power at the rotation in-process, through fixing bearing's parcel, reduces the clearance between eccentric shaft and the casing to make the swing power of whole equipment reduce, use more smooth and easy.

5. This small-size medical bone saw through locking mechanical system's design for whole flip can not be opened carrying out the maloperation or mistake touch whole flip, and the battery can not drop, thereby to a great extent the improvement the safety in utilization of whole bone saw, the condition that the battery power that drops disappears.

Drawings

FIG. 1 is a schematic view of an overall cross-sectional structure of a small medical bone saw according to the present invention;

FIG. 2 is a schematic view of a swing mechanism of a small medical bone saw structure according to the present invention;

FIG. 3 is a schematic view of a reduction mechanism of a small medical bone saw structure according to the present invention;

FIG. 4 is a schematic connection diagram of a planet carrier of a small medical bone saw structure according to the present invention;

FIG. 5 is a schematic view of a structural connection mechanism of a small medical bone saw according to the present invention;

FIG. 6 is a schematic view of a button mechanism of a small medical bone saw structure according to the present invention;

FIG. 7 is a schematic view of a locking mechanism of a small medical bone saw structure according to the present invention;

FIG. 8 is a schematic view of a connection structure of a small medical bone saw latch according to the present invention;

FIG. 9 is a schematic view of a mortise lock structure of a small medical bone saw according to the present invention;

fig. 10 is a schematic view of an eccentric shaft structure of a small medical bone saw according to the present invention.

In the figure: 1. a housing; 2. a connector; 3. a rear housing; 4. a swing mechanism; 41. a rotating bearing; 42. placing a frame; 43. fixing a column; 44. a connecting shaft; 45. anti-abrasive disc; 5. a motor; 6. a speed reduction mechanism; 61. a drive gear; 62. a gear sleeve; 63. a planet carrier; 64. a planet shaft; 65. a planetary gear; 7. a connecting mechanism; 71. fixing a sleeve; 72. a button; 73. clamping the column; 74. the spring is tightly propped; 75. a fixed shaft; 8. a button mechanism; 81. pressing and twisting; 82. a fixing box; 83. a retraction spring; 9. a locking mechanism; 91. a cover is turned; 92. a mortise lock; 921. a T-shaped chute; 922. locking the groove; 93. a locking spring; 94. a locking plate; 941. a pull rod; 942. a small spring; 95. a traveler; 96. a clamping hole; 10. a handle shell; 11. a battery; 12. a rear cover; 13. a saw blade; 14. an eccentric shaft; 15. fixing the bearing; 16. a connecting seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The utility model provides a small-size medical bone saw, as shown in fig. 1-4, including casing 1, the left end threaded connection of casing 1 has connector 2, the upper surface of connector 2 is provided with coupling mechanism 7, coupling mechanism 7's inside is provided with saw bit 13, the inside of connector 2 is provided with swing mechanism 4, the right side threaded connection of casing 1 has backshell 3, motor 5 has been placed to the inside of backshell 3, the inside of casing 1 is provided with reduction gears 6, the lower surface of casing 1 has handle shell 10 through bolted connection, battery 11 has been placed to the inside of handle shell 10, the bottom of handle shell 10 is provided with locking mechanical system 9, the left side of handle shell 10 is provided with button mechanism 8.

The radiating groove has been seted up on the surface of backshell 3, design through the radiating groove, make motor 5 have fine heat dissipation space at the in-process of work, have fine radiating effect to motor 5, the right-hand member threaded connection of backshell 3 has hou gai 12, the left side of hou gai 12 and the right side of motor 5 contact each other, it is tight with motor 5 contact each other top through hou gai 12, make motor 5 can not appear not hard up in the installation, the condition of rocking makes whole equipment use more steady.

In this embodiment, swing mechanism 4 is including rocker 42, the upper surface of rocker 42 is pegged graft and is had connecting axle 44, the lower surface of rocker 42 rotates and is connected with fixed column 43, the bottom of fixed column 43 rotates and connects in the inside of connector 2, the inner wall welding of rocker 42 has two anti abrasive disc 45, rocker 42 carries out the horizontal hunting, through rocker 42 swing in-process, with the lasting swing of swing power transmission to fixed cover 71, thereby carry out the horizontal hunting to saw bit 13, the realization is to the cutting effect of garrulous bone.

Furthermore, the wear-resistant sheet 45 is made of high manganese alloy, the high manganese alloy has strong wear resistance, and further the service life of the device in the using process can be prolonged, the surface of the wear-resistant sheet 45 is connected with the rotating bearing 41 in a sliding manner, the axis of the rotating bearing 41 is fixedly connected with the eccentric shaft 14, the right end of the eccentric shaft 14 is connected with the connecting seat 16 in an inserting manner, the rotating bearing 41 is driven to rotate eccentrically by the rotating force on the eccentric shaft 14, so that the swing frame 42 can swing, the eccentricity ratio of the eccentric shaft 14 is smaller than 1 and is between 0.8 and 0.9, in the numerical process, the vibration amplitude of the eccentric shaft 14 is lowest, the effect is best, and further in the eccentric rotating process, the vibration force reaches the lowest.

It is worth noting that, the equal fixedly connected with fixing bearing 15 in surface of eccentric shaft 14 and connecting seat 16, the surface of eccentric shaft 14 rotates and connects in the inside of casing 1, fixing bearing 15's surface and the inside fixed connection of casing 1, make power transmission's in-process connecting seat 16 and eccentric shaft 14's junction more stable through multiunit fixing bearing 15, simultaneously because eccentric shaft 14 must have pendulum power at the rotation in-process, through fixing bearing 15's parcel, reduce the clearance between eccentric shaft 14 and the casing 1, thereby make the swing power of whole equipment reduce, use more smoothly.

In addition, reduction gears 6 is including drive gear 61, the surface meshing of drive gear 61 has four planetary gear 65, planetary gear 65's axle center department rotates and is connected with planetary shaft 64, planetary shaft 64's left end welding has planet carrier 63, the inside fixed mounting of casing 1 is connected with gear sleeve 62, and four planetary gear 65's surface and gear sleeve 62's inner wall intermeshing, drive gear 61's axle center department and motor 5's output fixed connection, through planetary gear 65's connection transmission, control motor 5 to eccentric shaft 14's output power that can be fine, make and improve the rotational speed and reduce the speed can be more sensitive, have fine speed reduction effect, make and rotate more stable.

In addition, gear sleeve 62's material is the alloy copper, and planet carrier 63's left end and connecting seat 16's right-hand member fixed connection adopt seal structure when gear 62's inside rotates, have fine syllable-dividing effect, reduce the noise that the gear rotation in-process produced.

Example 2

A small-sized medical bone saw is shown in figures 5-10, a connecting mechanism 7 comprises a fixing sleeve 71, a fixing shaft 75 is fixedly connected to the lower surface of the fixing sleeve 71, the surface of the fixing shaft 75 is rotatably connected to the inside of a connector 2, the surface of a saw blade 13 is inserted into the fixing sleeve 71, the inside of the fixing sleeve 71 is respectively and slidably connected with a button 72 and a jacking spring 74, the saw blade 13 is located between the button 72 and a clamping column 73, the jacking spring 74 is sleeved on the surface of the clamping column 73, the bottom end of the fixing shaft 75 is fixedly connected with the top end of a connecting shaft 44, and through upward jacking force of the jacking spring 74, the straight surface part of the clamping column 73 can be well clamped inside a mounting hole of the saw blade 13, so that the saw blade 13 can be fixed, and meanwhile, the saw blade 13 can.

Further, the button mechanism 8 includes a fixing box 82, a pressure button 81 is slidably connected inside the fixing box 82, a contraction spring 83 is sleeved on the surface of the pressure button 81, the right side of the fixing box 82 is connected to the left side of the handle shell 10 through a bolt, the contraction spring 83 is located between the fixing box 82 and the handle shell 10, the pressure button 81 is controlled by a hand to be pressed, so that a right pin of the pressure button 81 is inserted into a switch of the battery 11, and the output voltage value is controlled through the pressing depth to control the rotation speed of the motor 5.

Further, locking mechanical system 9 is including flip 91, flip 91's lower surface sliding connection has mortise lock 92, mortise lock 92's inside sliding connection has two travelers 95, travelers 95's both ends fixed connection is in flip 91's inside, mortise lock 92's lower surface joint has jam plate 94, flip 91's surface rotation connects the lower surface at handle shell 10, mortise lock 92's right side welding has locking spring 93, locking spring 93 is located flip 91's inside, card hole 96 has been seted up to handle shell 10's inner wall, the impetus through locking spring 93 is with mortise lock 92 card in the inside of card hole 96, thereby the realization is fixed to flip 91's joint, fix battery 11.

It should be noted that the lower surface of the mortise lock 92 is respectively provided with a T-shaped chute 921 and a lock groove 922, the lower surface of the lock plate 94 is rotatably connected with a pull rod 941, a small spring 942 is sleeved on the surface of the pull rod 941, the small spring 942 is located below the mortise lock 92, the surface of the pull rod 941 is slidably connected inside the flip cover 91, in order to prevent the battery 11 from dropping off from the flip cover 91 due to misoperation, a lock catch is arranged inside the flip cover 91, when the lock plate 94 is clamped in the lock groove 922, a user can not open the mortise lock 92 when the user dials the mortise lock 92, only the lock plate 94 is pulled out upwards and rotates the lock plate 94, so that the other two sides of the lock plate 94 are slidably connected to the inner wall of the T-shaped chute 921, the whole mortise lock 92 is unlocked, and then the lock is toggled open, and therefore the use.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

The working principle is that the pressing of the pressing button 81 is controlled by a hand, so that a right pin of the pressing button 81 is inserted into a switch of the battery 11, the output voltage value is controlled by the pressing depth to control the rotating speed of the motor 5, the rotation of the motor 5 controls the rotation of the driving gear 61, the rotation of the driving gear 61 controls the rotation of the four planetary gears 65, meanwhile, the four planetary gears 65 can be meshed and rotated on the inner wall of the gear sleeve 62, the output power of the motor 5 to the eccentric shaft 14 can be well controlled through the connection and transmission of the planetary gears 65, so that the rotating speed can be improved and reduced more sensitively, a good reduction effect is achieved, and meanwhile, when the gears rotate in the gear sleeve 62, a sealing structure is adopted, the sound insulation effect is good, the noise generated in the gear rotating process is reduced, when the planet carrier 63 is driven to rotate, the power is transmitted to the eccentric shaft 14 through the connecting transmission of the connecting seat 16, the eccentric shaft 14 rotates to drive the rotating bearing 41 to rotate, the diameter of the rotating bearing 41 is the same as the branching length of the swing frame 42, the rotating bearing 41 drives the swing frame 42 to swing left and right, the swing force is transmitted to the continuous swing of the fixing sleeve 71 through the action of the fixing shaft 75 in the swing process of the swing frame 42, so that the saw blade 13 swings left and right to realize the cutting effect of broken bones, the clamping column 73 can be separated from the mounting hole of the saw blade 13 by pressing the button 72, then the saw blade 13 can be drawn out, the saw blade 13 can be well drawn out through the conical surface design of the clamping column 73, the size of the saw blade 13 can be conveniently changed, when the saw blade 13 is inserted, the straight surface part of the clamping column 73 can be well clamped in the mounting hole of the saw blade 13 through the upward jacking force of the jacking spring 74, realize fixedly, and battery 11 is in the inside of handle shell 10, open in order to prevent flip 91 maloperation, battery 11 drops, the driving force through locking spring 93 blocks mortise lock 92 in the inside of calorie hole 96, there is the second safety catch simultaneously, jam plate 94 is when the locked in keyway 922, the user is when stirring mortise lock 92, it is unable to open, in order to prevent the mistake and touch, battery 11 drops, only upwards pull out and rotate jam plate 94 with jam plate 94, make other both sides sliding connection of jam plate 94 at the inner wall of T spout 921, the restriction is just removed to whole mortise lock 92, can stir and open, change or charge to battery 11, thereby to a great extent improved the safety in utilization of whole bone saw, avoid the mistake touching, open flip 91, battery 11 drops, the condition that power disappears.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims

1. A small-size medical bone saw, includes casing (1), its characterized in that: the left end of the casing (1) is in threaded connection with a connector (2), the upper surface of the connector (2) is provided with a connecting mechanism (7), a saw blade (13) is arranged inside the connecting mechanism (7), a swinging mechanism (4) is arranged inside the connector (2), the right side of the casing (1) is in threaded connection with a rear shell (3), a motor (5) is placed inside the rear shell (3), a speed reducing mechanism (6) is arranged inside the casing (1), the lower surface of the casing (1) is connected with a handle shell (10) through a bolt, a battery (11) is placed inside the handle shell (10), the bottom of the handle shell (10) is provided with a locking mechanism (9), and the left side of the handle shell (10) is provided with a button mechanism (8);

the heat dissipation structure is characterized in that a heat dissipation groove is formed in the surface of the rear shell (3), a rear cover (12) is connected to the right end of the rear shell (3) in a threaded mode, and the left side of the rear cover (12) is in contact with the right side of the motor (5).

2. The small medical bone saw of claim 1, wherein: the swing mechanism (4) comprises a swing frame (42), a connecting shaft (44) is inserted into the upper surface of the swing frame (42), a fixing column (43) is rotatably connected to the lower surface of the swing frame (42), the bottom of the fixing column (43) is rotatably connected to the inside of the connecting head (2), and two anti-abrasive sheets (45) are welded to the inner wall of the swing frame (42).

3. A small medical bone saw according to claim 2, wherein: the material of anti abrasive disc (45) is high manganese alloy, the surperficial sliding connection of anti abrasive disc (45) has rolling bearing (41), the axle center department fixedly connected with eccentric shaft (14) of rolling bearing (41), the right-hand member of eccentric shaft (14) is pegged graft and is had connecting seat (16).

4. A small medical bone saw according to claim 3, wherein: the surface of the eccentric shaft (14) and the surface of the connecting seat (16) are fixedly connected with fixed bearings (15), the surface of the eccentric shaft (14) is rotatably connected inside the machine shell (1), and the surface of each fixed bearing (15) is fixedly connected with the inside of the machine shell (1).

5. The small medical bone saw of claim 1, wherein: reduction gears (6) are including drive gear (61), the surface toothing of drive gear (61) has four planetary gear (65), the axle center department of planetary gear (65) rotates and is connected with planetary shaft (64), the left end welding of planetary shaft (64) has planet carrier (63), the inside fixed mounting of casing (1) is connected with gear sleeve (62), and the surface of four planetary gear (65) and the inner wall intermeshing of gear sleeve (62), the axle center department of drive gear (61) and the output fixed connection of motor (5).

6. The small medical bone saw of claim 5, wherein: the gear sleeve (62) is made of alloy copper, and the left end of the planet carrier (63) is fixedly connected with the right end of the connecting seat (16).

7. The small medical bone saw of claim 1, wherein: coupling mechanism (7) are including fixed cover (71), the lower fixed surface of fixed cover (71) is connected with fixed axle (75), the inside at connector (2) is connected in the rotation of the surface of fixed axle (75), the surface of saw bit (13) is pegged graft in the inside of fixed cover (71), the inside difference sliding connection of fixed cover (71) has button (72) and the tight spring in top (74), saw bit (13) are located between button (72) and card post (73), the tight spring in top (74) have been cup jointed on the surface of card post (73), the bottom of fixed axle (75) and the top fixed connection of connecting axle (44).

8. The small medical bone saw of claim 1, wherein: the button mechanism (8) comprises a fixed box (82), a pressure knob (81) is connected to the inside of the fixed box (82) in a sliding mode, a contraction spring (83) is sleeved on the surface of the pressure knob (81), the right side of the fixed box (82) is connected to the left side of the handle shell (10) through a bolt, and the contraction spring (83) is located between the fixed box (82) and the handle shell (10).

9. The small medical bone saw of claim 1, wherein: locking mechanical system (9) are including flip (91), the lower surface sliding connection of flip (91) has mortise lock (92), the inside sliding connection of mortise lock (92) has two travellers (95), the both ends fixed connection of traveller (95) is in the inside of flip (91), the lower surface joint of mortise lock (92) has jam plate (94), the lower surface of connection at handle shell (10) is rotated on the surface of flip (91), the right side welding of mortise lock (92) has locking spring (93), locking spring (93) are located the inside of flip (91), card hole (96) have been seted up to the inner wall of handle shell (10).

10. The small medical bone saw of claim 9, wherein: t spout (921) and locked groove (922) have been seted up respectively to the lower surface of mortise lock (92), the lower surface rotation of jam plate (94) is connected with pull rod (941), little spring (942) have been cup jointed on the surface of pull rod (941), little spring (942) are located the below of mortise lock (92), the inside at flip (91) is connected in the surface sliding of pull rod (941).