CN211213363U

CN211213363U - Bone drill assembly for medical robot

Info

Publication number: CN211213363U
Application number: CN201922071718.0U
Authority: CN
Inventors: 高鸿翔
Original assignee: ZAOZHUANG MUNICIPAL HOSPITAL
Current assignee: ZAOZHUANG MUNICIPAL HOSPITAL
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-08-11
Anticipated expiration: 2029-11-27

Abstract

The utility model discloses a bone drill subassembly for medical robot relates to medical instrument technical field, including drill bit, mobile jib, casing, be close to the one end fixedly connected with drilling rod of mobile jib on the drilling bit, casing inner wall fixed mounting has driving motor, and the bottom fixedly connected with centre gripping handle of casing is equipped with the drill bit on the mobile jib and changes the device, the one end butt of keeping away from the drill bit on the drilling rod has damping device. The utility model discloses an above-mentioned isotructure's cooperation, it is good with dismantling bone drill and stability to have possessed convenient and fast's installation, the efficiency of disinfection washing operation is changed to the drill bit has been improved, cooperation damping device has greatly reduced the frequency and the intensity of drill bit and drilling rod vibrations, the injury to skeleton has been reduced, the precision of bone drill has been improved, the advantages such as security of operation have been improved, it is inconvenient that the drill bit that exists among the prior art changes the disinfection, rigidity bone drill vibrations lead to its precision and security not high problem.

Description

Bone drill assembly for medical robot

Technical Field

The utility model relates to the technical field of medical equipment, specifically be a bone drill subassembly for medical robot.

Background

The bone drill is a medical tool for drilling holes in bones in surgical operations, is suitable for providing mechanical power to perform bone tissue operations, and plays an important role in related operations such as orthopedics, cardiothoracic and the like. The bone drills in the current market are all electric bone drills driven by a motor, generally operated by holding a grab handle by a surgeon, and have the advantages of minimal invasion, simplicity, convenience, high efficiency and the like which are increasingly remarkable along with the development of a medical robot.

However, in the use process of the medical robot in the current market, the drill bit and the drill handle of the rigid structure can vibrate, so that the stability and the accuracy of the bone drill are greatly reduced, meanwhile, the replacement and disinfection process of the drill bit is complicated, the operation time is prolonged, and the operation safety is also reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bone drill subassembly for medical robot, it is good to possess convenient and fast's installation and dismantle bone drill and stability, the efficiency of disinfection washing operation is changed to the drill bit has been improved, cooperation damping device has greatly reduced the frequency and the intensity of drill bit and drilling rod vibrations, the injury to the skeleton has been reduced, the precision of bone drill has been improved, the advantages such as security of operation have been improved, it is inconvenient to have solved the drill bit that exists among the background art and change the disinfection, rigidity bone drill vibrations lead to its precision and the not high problem of security.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a bone drill subassembly for medical robot, includes drill bit, mobile jib, casing, the one end fixedly connected with drilling rod that is close to the mobile jib on the drill bit, casing inner wall fixed mounting has driving motor, and the bottom fixedly connected with centre gripping handle of casing is equipped with the drill bit on the mobile jib and changes the device.

The drill bit changing device comprises two movable plates, two fixed plates and two limiting blocks, the surface of the main rod is in threaded connection with a lantern ring, a through groove and a limiting groove are formed in the main rod, the outer surface of the lantern ring is fixedly connected with a push ring and two limiting groove sliding connections and two limiting grooves are formed in the surfaces of the limiting blocks, two movable plates and two damping devices are abutted to one ends, close to the drill bits, of the limiting blocks respectively, one ends, far away from the drill bits, of the movable plates are hinged to the two fixed plates, the two fixed plates are fixedly connected to the surfaces of the main rod, the surfaces of the drill rods are fixedly connected with the two limiting blocks, and the one.

The drill bit is kept away from on the mobile jib one side fixedly connected with connecting rod, the one end and the driving motor's of keeping away from the mobile jib pivot fixed connection on the connecting rod.

Preferably, damping device includes buffer spring and sliding base, sliding base and the inner wall sliding connection who leads to the groove, buffer spring's one end and sliding base fixed connection, buffer spring's the other end and the inner wall fixed connection who leads to the groove.

Preferably, the opposite sides of the two moving plates are abutted against one end of the push ring.

Preferably, the sizes of the two limiting blocks are matched with the limiting grooves.

Preferably, the two limiting blocks are arranged on two sides of the drill rod in an axial symmetry manner.

Compared with the prior art, the beneficial effects of the utility model are as follows:

firstly, the utility model discloses a set up the drill bit and change the device, improved the convenient and fast installation and the dismantlement of bone drill, and stability is good, has also improved the drill bit simultaneously and has changed the efficiency of disinfection washing operation.

Two, the utility model discloses a set up damping device, deformation through buffer spring's the load turns into potential energy with mechanical power, has greatly reduced the frequency and the intensity of drill bit and drilling rod vibrations, has reduced the injury to the skeleton, has improved the precision that the bone bored.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a front partial sectional view of the present invention;

fig. 3 is a left side sectional view of the present invention.

In the figure: 1-drill bit, 2-drill rod, 3-moving plate, 4-limiting block, 5-push ring, 6-main rod, 7-buffer spring, 8-sliding base, 9-fixing plate, 10-sleeve ring, 11-connecting rod, 12-driving motor, 13-machine shell, 14-clamping handle, 15-damping device, 16-drill bit replacing device, 17-through groove and 18-limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: the utility model provides a bone drill subassembly for medical robot, includes drill bit 1, mobile jib 6, casing 13, is close to the one end fixedly connected with drilling rod 2 of mobile jib 6 on the drill bit 1, and casing 13 inner wall fixed mounting has driving motor 12, and the bottom fixedly connected with centre gripping handle 14 of casing 13 is connected with medical robot through centre gripping handle 4, is equipped with drill bit change device 16 on the mobile jib 6.

The drill bit replacing device 16 comprises two moving plates 3, two fixing plates 9 and two limiting blocks 4, wherein the surface of the main rod 6 is in threaded connection with a lantern ring 10, a through groove 17 and a limiting groove 18 are formed in the main rod 6, the outer surface of the lantern ring 10 is fixedly connected with a push ring 5, the surfaces of the two limiting blocks 4 are in sliding connection with the limiting groove 18, one ends, close to the drill bit 1, of the two limiting blocks 4 are respectively abutted with the two moving plates 3, one ends, far away from the drill bit 1, of the two moving plates 3 are hinged with the two fixing plates 9, the two fixing plates 9 are fixedly connected to the surface of the main rod 6, the surface of the drill rod 2 is fixedly connected with the two limiting blocks 4, when the bone drill bit is replaced, an operator firstly closes the driving motor 12, rotates the push ring 5, and moves towards the direction far away from the drill bit 1 along the surface of the main rod 6, the push ring 5 is far away from the two moving plates 3, then the drill rod 2 is held, the two moving plates 6 are separated from the two limit blocks 4 through the hinged relation of the moving plates 3 and the fixed plate 9, so that the drill rod 2 is pulled out in the direction far away from the main rod 6, then a new bone drill is taken out, the replaced drill rod 2 is inserted into the inner wall of the limit groove 18 through the limit blocks 4, one end, far away from the drill bit 1, of the drill rod 2 is abutted against the sliding base 8, then the push ring 5 is rotated, the sleeve ring 10 moves towards the direction close to the drill bit 1 along the surface of the main rod 6, when the sleeve ring 10 moves to a certain degree, the push ring 5 is abutted against the two moving plates 3, so that the moving plates 3 rotate towards opposite directions to be respectively abutted against the two limit blocks 4, the push ring 5 continues to rotate, the two limit blocks 4 are abutted against and pressed through the relative rotation process of the, thereby completing the installation and replacement of the bone drill, and the end of the drill rod 2 far away from the drill bit 1 is abutted with the damping device 15.

Preferably, the damping device 15 comprises a buffer spring 7 and a sliding base 8, the sliding base 8 is slidably connected with the inner wall of the through groove 17, one end of the buffer spring 7 is fixedly connected with the sliding base 7, the other end of the buffer spring 8 is fixedly connected with the inner wall of the through groove 17, when the driving motor 12 is started for use, vibration generated by contact between the rigid drill bit 1 and a bone is transmitted to the buffer spring 7 through the drill rod 2, the buffer spring 7 can generate large elastic deformation when loaded and converts mechanical work into elastic potential energy, and the deformation of the buffer spring 7 disappears and returns to the original shape after unloading, so that the vibration frequency and strength of the drill bit 1 and the drill rod 2 are greatly reduced.

Preferably, the opposite sides of the two moving plates 3 are abutted against one end of the push ring 5, so that the abutting acting force of the two moving plates 3 on the two limit blocks 4 is stronger, and the drill rod 2 is better fixed.

Preferably, the two limit blocks 4 are matched with the limit grooves 18 in size, so that the limit blocks 4 can better move in the limit grooves 18.

Preferably, the two limit blocks 4 are arranged on two sides of the drill rod 2 in an axial symmetry manner, so that the acting force of the drill rod 2 is more uniform.

Keep away from one side fixedly connected with connecting rod 11 of drill bit 1 on the mobile jib 6, keep away from the one end of mobile jib 6 and driving motor 12's pivot fixed connection on the connecting rod 11, open driving motor 12, make the bone drill normal operating.

The working principle is as follows: when the bone drill of the utility model is replaced, the medical staff firstly closes the driving motor 12, rotates the push ring 5, through the fixed connection relation between the push ring 5 and the sleeve ring 10, through the threaded connection relation between the sleeve ring 10 and the main rod 6, the sleeve ring 10 moves along the surface of the main rod 6 to the direction far away from the drill bit 1, the push ring 5 is far away from the two moving plates 3, then holds the drill rod 2, through the hinged relation between the moving plates 3 and the fixed plate 9, the two moving plates 6 are separated from the two limit blocks 4, thereby the drill rod 2 is pulled out to the direction far away from the main rod 6, then a new bone drill is taken out, the replaced drill rod 2 is inserted into the inner wall of the limit groove 18 through the limit blocks 4, one end of the drill rod 2 far away from the drill bit 1 is abutted against the sliding base 8, then the push ring 5 is rotated, the sleeve ring 10 moves along the surface of the main rod, the push ring 5 is abutted against the two moving plates 3, the moving plates 3 are rotated to be respectively abutted against the two limit blocks 4 in the opposite direction, the push ring 5 is continuously rotated, through the relative rotation process of the two moving plates 3, the two limiting blocks 4 are pressed against, so that the two limiting blocks 4 continuously slide along the inner wall of the limiting groove 18 in the direction far away from the drill bit 1, thereby completing the installation and replacement of the bone drill, when the driving motor 12 is started for use, the vibration generated by the contact of the rigid drill bit 1 and the bone is transmitted to the buffer spring 7 by the drill rod 2, because the buffer spring 7 can generate larger elastic deformation when being loaded and convert mechanical work into elastic potential energy, and after unloading, the deformation of the buffer spring 7 disappears and returns to the original shape, so that the vibration frequency and strength of the drill bit 1 and the drill rod 2 are greatly reduced, the damage to bones is reduced, and the accuracy of the bone drill is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a bone drill subassembly for medical robot, includes drill bit (1), mobile jib (6), casing (13), be close to one end fixedly connected with drilling rod (2) of mobile jib (6) on drill bit (1), casing (13) inner wall fixed mounting has driving motor (12), bottom fixedly connected with centre gripping handle (14) of casing (13), its characterized in that: a drill bit replacing device (16) is arranged on the main rod (6);

the drill bit replacing device (16) comprises two moving plates (3), two fixed plates (9) and two limiting blocks (4), the surface of the main rod (6) is in threaded connection with a sleeve ring (10), a through groove (17) and a limiting groove (18) are formed in the main rod (6), the outer surface of the sleeve ring (10) is fixedly connected with a push ring (5), the surfaces of the two limit blocks (4) are in sliding connection with a limit groove (18), one ends of the two limit blocks (4) close to the drill bit (1) are respectively abutted with two movable plates (3), one ends of the two movable plates (3) far away from the drill bit (1) are hinged with two fixed plates (9), the two fixed plates (9) are fixedly connected with the surface of the main rod (6), the surface of the drill rod (2) is fixedly connected with two limiting blocks (4), and one end, far away from the drill bit (1), of the drill rod (2) is abutted with a damping device (15);

the drill bit is characterized in that a connecting rod (11) is fixedly connected to one side, away from the drill bit (1), of the main rod (6), and one end, away from the main rod (6), of the connecting rod (11) is fixedly connected with a rotating shaft of the driving motor (12).

2. A bone drill assembly for a medical robot according to claim 1, wherein: damping device (15) include buffer spring (7) and sliding bottom (8), sliding bottom (8) and the inner wall sliding connection who leads to groove (17), the one end and the sliding bottom (8) fixed connection of buffer spring (7), the other end and the inner wall fixed connection who leads to groove (17) of buffer spring (7).

3. A bone drill assembly for a medical robot according to claim 1, wherein: the opposite sides of the two moving plates (3) are respectively abutted against one end of the push ring (5).

4. A bone drill assembly for a medical robot according to claim 1, wherein: the sizes of the two limiting blocks (4) are matched with the limiting groove (18).

5. A bone drill assembly for a medical robot according to claim 1, wherein: the two limiting blocks (4) are arranged on two sides of the drill rod (2) in an axial symmetry manner.