CN213406195U

CN213406195U - Medical electric drill

Info

Publication number: CN213406195U
Application number: CN202022100987.8U
Authority: CN
Inventors: 谭晶鑫; 何文昌; 余露; 伍薇; 李墨奇; 王代红; 雷娜
Original assignee: Second Affiliated Hospital Army Medical University
Current assignee: Second Affiliated Hospital Army Medical University
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-06-11
Anticipated expiration: 2030-09-22

Abstract

The utility model provides a medical electric drill, relating to the technical field of medical auxiliary devices, which comprises a hand-held piece and a bending mechanism rotationally arranged on the hand-held piece; the hand piece is a columnar component which is hollow inside and has an opening at one end; the bending mechanism comprises a frustum-shaped joint assembly and a rotating member, the rotating member is a long rod piece, one end of the long rod piece is fixed on the edge of the large end face of the joint assembly, the length direction of the rotating member is perpendicular to the large end face of the joint assembly, the other end of the rotating member is hinged to the inner wall of the handheld member, and the hinge axis of the rotating member is perpendicular to the length direction of the rotating member; the other side of the large end surface is hinged with a positioning rod for limiting the rotation angle of the joint component; the small end of the joint component is rotatably provided with a drill bit, and the interior of the hand piece is provided with a driving mechanism for driving the drill bit to rotate. This scheme has the effect that drill bit angularly adjustable conveniently operates in narrow and small space.

Description

Medical electric drill

Technical Field

The utility model relates to a medical treatment auxiliary device's technical field especially relates to a medical electric drill.

Background

The electric drill is a common drilling tool, and when in medical operation, orthopedists often use the medical electric drill to perform operation so as to facilitate the operation.

According to the Chinese patent with the publication number of CN104887287B, the invention discloses a medical electric surgical drill with a drill bit convenient to disassemble and assemble, which comprises a drill body, an output shaft and a drill bit, and further comprises a chuck, wherein the drill bit is detachably arranged in the chuck; and the two ends of the transmission piece are respectively in transmission connection with the output shaft and the chuck and can rotate together.

The prior related art has the following technical defects: when the surgical electric drill is used for drilling holes in narrow and small space positions, interference is easy to occur, and the surgical process is seriously influenced.

SUMMERY OF THE UTILITY MODEL

To the not enough that exists among the prior art, the utility model provides a medical electric drill, its drill bit angle can be adjusted for the device has the effect of carrying out the operation of driling in narrow and small space.

According to an embodiment of the utility model, the medical electric drill comprises a hand-held piece and a bending mechanism which is rotatably arranged on the hand-held piece; the hand piece is a columnar component which is hollow inside and has an opening at one end; the bending mechanism comprises a frustum-shaped joint assembly and a rotating member, the rotating member is a long rod piece, one end of the long rod piece is fixed on the edge of the large end face of the joint assembly, the length direction of the rotating member is perpendicular to the large end face of the joint assembly, the other end of the rotating member is hinged to the inner wall of the handheld member, and the hinge axis of the rotating member is perpendicular to the length direction of the rotating member; the other side of the large end surface is hinged with a positioning rod for limiting the rotation angle of the joint component; the small end of the joint component is rotatably provided with a drill bit, and the interior of the hand piece is provided with a driving mechanism for driving the drill bit to rotate.

Through above technical scheme, when the operation of driling in narrow and small space, adjust the length of registration lever for the angle deflection takes place for the joint subassembly, in order to make things convenient for put into this position department with the drill bit, in order to conveniently drill.

Preferably, the driving mechanism comprises a driving motor, a transmission assembly is connected between the drill bit and the driving motor, and the transmission assembly comprises a connecting piece arranged at the output end of the driving motor, a clamping piece used for installing the drill bit and a steel cable used for transmitting torque and connected between the connecting piece and the clamping piece.

Through above technical scheme, utilize the steel cable can make things convenient for driving motor to transmit the moment of torsion to the drill bit that is certain angle with driving motor.

Preferably, the clamping piece is rotatably arranged in the middle of the small end face of the joint component, the clamping piece is a cylindrical pipe, and the rotation axis of the clamping piece is perpendicular to the end face of the clamping piece; two limiting rings used for limiting the position of the clamping piece are fixed on the clamping piece, and the two limiting rings are respectively positioned on two sides of the panel at the small end of the joint component.

Through the technical scheme, the limiting ring is used for limiting the position of the clamping piece, and the possibility that the clamping piece falls off in the using process is reduced; meanwhile, the clamping piece can bear larger axial force.

Preferably, both ends of the steel cable are fixed with sliding pieces, the sliding pieces are circular tubular members, the steel cable is fixed in the sliding pieces, a plurality of key teeth are formed on the outer sides of the sliding pieces, the key teeth are long strip-shaped members, and the length directions of the key teeth are parallel to the rotation axis of the sliding pieces; counter bores matched with the sliding parts are formed in the connecting part and the clamping part, and the axis directions of the counter bores are parallel to the rotation axis of the output shaft of the driving motor.

Through the technical scheme, the possibility of slippage between the steel cable and the connecting piece can be reduced by matching the key teeth of the sliding piece with the counter bores; after the joint assembly is bent, the steel cable connected with the sliding piece can slide in the counter bore of the connecting piece or the clamping piece, so that the steel cable, the connecting piece and the clamping piece are in a clamping state.

Preferably, the driving motor is a reduction motor.

Through above technical scheme, gear motor can make the drill bit obtain bigger torque, the dead possibility of speed reduction drill bit card.

Preferably, the handpiece is rectangular in cross-section.

Through above technical scheme, the hand-held piece that the cross-section is the rectangle can conveniently hold the device and the direction location bores the direction.

Preferably, an elastic sealing sleeve is sleeved between the hand piece and the joint component.

Through above technical scheme, the elastic sealing sleeve is used for sealing the clearance between hand-held piece and the joint subassembly, reduces the possibility that debris get into the inside of hand-held piece in the in-process of drilling for the inside clean state that keeps of device reduces the possibility that the patient is infected.

Preferably, the small end face of the joint component faces to the side far away from the joint component, and an illuminating lamp is installed on the small end face of the joint component.

Through above technical scheme, the light can provide the illumination in narrow and small space, makes things convenient for operating personnel to see the operating mode clearly more.

Compared with the prior art, the utility model discloses one of following beneficial effect has at least:

1. the joint assembly of the device can be bent to form a certain angle by using the bending mechanism, so that the device can operate in a narrow space and is more convenient to use;

2. when utilizing drive assembly to make the device carry out the angle and buckle, the steel cable can slide, has prolonged the length of transmission stroke for the device has the bigger angle of buckling.

Drawings

FIG. 1 is a schematic overall structure of the present application;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 2;

fig. 4 is an exploded view of the drive mechanism.

In the above drawings: 1. a handpiece; 11. closing the plate; 12. a bump; 2. a bending mechanism; 21. a joint assembly; 211. a rotating table; 212. an end plate; 22. a rotating member; 23. positioning a rod; 24. an auxiliary push rod; 3. a drill bit; 4. a drive mechanism; 41. a drive motor; 42. a transmission assembly; 421. a connecting member; 422. a clamping piece; 4221. a limiting ring; 423. a wire rope; 424. a sliding member; 4241. a key tooth; 5. sealing sleeves; 6. an illuminating lamp.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.

The utility model provides a medical electric drill, refers to fig. 1, includes handheld 1, rotates the bending mechanism 2 and the drive bit 3 pivoted actuating mechanism 4 of installing on handheld 1 for the device's joint position angularly adjustable has the effect that conveniently operates in narrow and small space.

Referring to fig. 2 and 3, the hand piece 1 is a long rod with a hollow inside, the hand piece 1 can be made of a stainless steel square tube, the sealing plate 11 can be detachably mounted at one end of the hand piece 1, and the sealing plate 11 can be made of a stainless steel plate and fixed with the hand piece 1 through bolts.

The bending mechanism 2 comprises a joint component 21, a rotating component 22 and a positioning rod 23; the joint assembly 21 includes a frustum-shaped rotating table 211, the rotating table 211 may be a circular truncated cone-shaped or truncated pyramid-shaped housing, two ends of the rotating table 211 are provided with openings, here, the frustum-shaped rotating table 211 is adopted, and the rotating table 211 may be made of a stainless steel plate. The end plates 212 are detachably mounted at openings at two ends of the rotating table 211 respectively, the end plates 212 can be made of stainless steel plates, and the end plates 212 and the rotating table 211 can be fixed by bolts.

Referring to fig. 3, the rotor 22 is an elongated member, one end of the rotor 22 is fixed to the edge of the end plate 212 of the large end face of the joint assembly 21, and the length direction of the rotor 22 is perpendicular to the main plane of the end plate 212. The rotor 22 is made of stainless steel and the rotor 22 and the end plate 212 are fixed by welding. The end of the rotary member 22 remote from the end plate 212 is hinged to the inner wall of the open end of the hand piece 1.

To facilitate the hinging of the rotary part 22 to the inner wall of the hand piece 1, two protrusions 12 are formed on the inner wall of the hand piece 1, and the rotary part 22 is hinged between the two protrusions 12 with its hinge axis perpendicular to the length direction of the rotary part 22.

A positioning rod 23 is hinged on the end plate 212 of the large end face of the rotating table 211 in a ball joint mode, the positioning rod 23 is a threaded rod, and one end of the positioning rod 23 is hinged on one side, away from the rotating piece 22, of the end plate 212 in a ball joint mode; the sealing plate 11 is provided with a threaded hole coaxial with the positioning rod 23, and the positioning rod 23 is installed in the threaded hole in a threaded manner and extends out of the sealing plate to form an extension part.

An auxiliary push rod 24 is detachably mounted on an extension part of the positioning rod 23, and the auxiliary push rod 24 is a long rod piece, and the length direction of the long rod piece is perpendicular to the length direction of the positioning rod 23.

When the angle of the joint assembly 21 needs to be adjusted, the auxiliary push rod 24 is installed on the positioning rod 23, the positioning rod 23 is rotated, and the length of the auxiliary push rod is adjusted, so that the joint assembly 21 is angularly deflected. In the using process, in order to reduce the occurrence of secondary rotation of the positioning rod 23, a locking nut can be installed on the positioning rod 23, and after the positioning rod 23 is adjusted, the locking nut is screwed down to keep the relative position of the positioning rod 23 and the sealing plate 11 unchanged.

The drill 3 is rotatably mounted in the middle of the end plate 212 at the small end face of the rotary table 211, and the axis of rotation is perpendicular to the main plane of the end plate 212, and the drill 3 is commercially available.

A driving mechanism 4 for driving the drill bit 3 to rotate is arranged in the hand piece 1, and the driving mechanism 4 comprises a driving motor 41 and a transmission assembly 42 for transmitting power to the drill bit 3. The driving motor 41 adopts a speed reducing motor, the speed reducing motor can be purchased from the market, and the speed reducing motor can output larger torque so that the drill bit 3 obtains larger torque; the axis of rotation of the output shaft of the drive motor 41 is collinear with the axis of rotation of the drill bit 3.

Install a plurality of light 6 on the end plate 212 of the little terminal surface of revolving stage 211, light 6 can provide the illumination in narrow and small space for operating personnel can conveniently see the operating mode clearly more.

Referring to fig. 4, the driving assembly 42 includes a connection member 421 mounted on the output shaft of the driving motor 41, a clamping member 422 for clamping the drill bit 3, and a steel cable 423 mounted between the connection member 421 and the clamping member 422; the coupling 421 is a cylindrical member, and the output shaft of the drive motor 41 is fixed in the coupling 421.

The clamping piece 422 is a cylindrical component, the clamping piece 422 can be made of stainless steel materials, the clamping piece 422 is rotatably installed in the middle of the end plate 212 of the small end face of the rotating table 211, the length direction of the clamping piece 422 is perpendicular to the main plane of the end plate 212, the clamping piece 422 is installed, the two limiting rings 4221 and the limiting ring 4221 can be circular rings, and the limiting ring 4221 is made of stainless steel plates.

The limit ring 4221 can be fixed on the clamping piece 422 by welding, and the limit ring 4221 is positioned at two sides of the end plate 212 on the small end surface of the rotating table 211. The stop ring 4221 may reduce the likelihood of the snap 422 disengaging from the end plate 212 when the snap 422 is rotated. One end of the clamping piece 422 far away from the end plate 212 is provided with a taper hole for clamping the drill bit 3, and a Morse taper hole is adopted here.

The steel cable 423 can be obtained through market purchase, the sliding piece 424 is fixed at two ends of the steel cable 423, the sliding piece 424 is a cylindrical component, a plurality of key teeth 4241 are formed on the outer cylindrical surface of the sliding piece 424, the key teeth 4241 are long strip-shaped components, the length direction of the key teeth 4241 is parallel to the axial direction of the sliding piece 424, and the plurality of key teeth 4241 are uniformly distributed on the outer cylindrical surface of the sliding piece 424. The counter bore that is adapted to glide 424 is seted up to one side that is close to steel cable 423 at connecting piece 421 and joint 422, and glide 424 slides and installs in the counter bore, and steel cable 423 self has certain support nature in the axial, and in certain turned angle, steel cable 423 can not appear the possibility that breaks away from rather than adjacent drive disk assembly. To facilitate the connection of the wire rope 423 to the snap-in member 422, a through hole is formed in the end plate 212 of the large end surface of the rotary table 211.

When the joint assembly 21 is used for adjusting the angle, the power transmission path from the driving motor 41 to the clamping piece 422 is lengthened by using the steel cable 423 which is slidably installed in the counter bore, so that the power of the driving motor 41 is conveniently transmitted to the drill bit 3, and the angle adjusting range of the drill bit 3 is enlarged.

Referring to fig. 1, an elastic sealing sleeve 5 is sleeved between the hand piece 1 and the joint component 21, the elastic sealing sleeve 5 can be made of elastic rubber, and the sealing sleeve 5 seals the gap between the hand piece 1 and the joint component 21, so that the possibility of contamination inside the device is reduced, and the possibility of infection of a patient is reduced.

The application principle of the medical electric drill is as follows: the drill bit 3 is selected to be clamped on the clamping piece 422, the auxiliary push rod 24 is installed on the positioning rod 23, the length of the positioning rod 23 is adjusted according to the required angle, the positioning rod 23 is locked by the locking nut, and the possibility of secondary displacement is reduced. The drilling operation can be started by powering on the illumination lamp 6 and simultaneously starting the driving motor 41.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A medical electric drill is characterized in that: comprises a hand piece (1) and a bending mechanism (2) which is rotatably arranged on the hand piece (1); the hand piece (1) is a columnar component which is hollow inside and is provided with an opening at one end; the bending mechanism (2) comprises a frustum-shaped joint assembly (21) and a rotating piece (22), the rotating piece (22) is a long rod piece, one end of the long rod piece is fixed on the edge of the large end face of the joint assembly (21), the length direction of the rotating piece (22) is perpendicular to the large end face of the joint assembly (21), the other end of the rotating piece (22) is hinged to the inner wall of the handheld piece (1), and the hinge axis of the rotating piece (22) is perpendicular to the length direction of the rotating piece (22); a positioning rod (23) used for limiting the rotation angle of the joint component (21) is hinged on the other side ball of the large end surface; the drill bit (3) is rotatably arranged at the small end of the joint component (21), and the driving mechanism (4) for driving the drill bit (3) to rotate is arranged in the hand piece (1).

2. A medical drill according to claim 1 wherein: actuating mechanism (4) are connected with transmission assembly (42) including driving motor (41) between drill bit (3) and driving motor (41), and transmission assembly (42) are including installing connecting piece (421) at driving motor (41) output, be used for installing joint spare (422) of drill bit (3) and be used for transmitting steel cable (423) of connection between connecting piece (421) and joint spare (422) of moment of torsion.

3. A medical drill according to claim 2 wherein: the clamping piece (422) is rotatably arranged in the middle of the small end face of the joint component (21), the clamping piece (422) is a cylindrical tube, and the rotation axis of the clamping piece (422) is perpendicular to the end face of the clamping piece (422); two limiting rings (4221) used for limiting the position of the clamping piece (422) are fixed on the clamping piece (422), and the two limiting rings (4221) are respectively positioned on two sides of a panel at the small end of the joint component (21).

4. A medical drill according to claim 3 in which: the sliding piece (424) is fixed at two ends of the steel cable (423), the sliding piece (424) is a round tubular component, the steel cable (423) is fixed inside the sliding piece (424), a plurality of key teeth (4241) are formed on the outer side of the sliding piece (424), the key teeth (4241) are long strip-shaped components, and the length direction of the key teeth (4241) is parallel to the rotation axis of the sliding piece (424); counter bores matched with the sliding pieces (424) are formed in the connecting pieces (421) and the clamping pieces (422), and the axial directions of the counter bores are parallel to the rotation axis of the output shaft of the driving motor (41).

5. A medical drill according to claim 2 wherein: the driving motor (41) is a speed reduction motor.

6. A medical drill according to claim 1 wherein: the cross section of the hand piece (1) is rectangular.

7. A medical drill according to claim 1 wherein: an elastic sealing sleeve (5) is sleeved between the hand piece (1) and the joint component (21).

8. A medical drill according to claim 1 wherein: and an illuminating lamp (6) is arranged on one side of the small end surface of the joint component (21) facing away from the joint component (21).