CN210990671U

CN210990671U - Jaw surgical screwdriver in narrow space

Info

Publication number: CN210990671U
Application number: CN201920887811.6U
Authority: CN
Inventors: 何悦; 韩煜; 李晓光; 刘忠龙; 唐晓
Original assignee: Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
Current assignee: Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2020-07-14
Anticipated expiration: 2029-06-13

Abstract

The utility model discloses a jaw surgery screwdriver in narrow space, which comprises a screwdriver head, a screwdriver rod, a connecting rod, a rotating rod, a first bevel gear, a second bevel gear, a third bevel gear and a fourth bevel gear; the screwdriver head is connected with the screwdriver rod, and a first bevel gear is fixed at the upper end of the screwdriver rod; one end of the connecting rod is fixed with a second bevel gear, and the other end of the connecting rod is fixed with a third bevel gear; the second bevel gear is meshed with the first bevel gear; the third bevel gear is meshed with a fourth bevel gear at the lower end of the rotating rod; the screwdriver pole with the connecting rod is certain angle, the connecting rod with the dwang is certain angle. The utility model discloses convenient operation can stretch into narrow and small operation space and carry out the loading and unloading of screw, makes operation space more free, has shortened the operation time, has improved the security of operation, has reduced jaw's operation's damage and has guaranteed the operation effect.

Description

Jaw surgical screwdriver in narrow space

Technical Field

The utility model relates to a medical screwdriver field especially relates to a narrow and small space jaw operation screwdriver.

Background

Generally, a medical screwdriver is a straight rod, but screws are often assembled and disassembled in a narrow space when jaw surgery is performed, unnecessary surgical injury is caused by the use of a common medical screwdriver for providing an operation space, the surgical efficiency is reduced, and the surgical risk is increased.

Therefore, those skilled in the art have made an effort to develop a surgical screwdriver for jaw bone in a narrow space, which can shorten the operation time and improve the operation efficiency.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defects in the prior art, the technical problem to be solved in the present invention is to reduce the risk of performing the screw assembling and disassembling operation in a narrow space and to improve the operation efficiency.

In order to achieve the above object, the utility model provides a jaw surgical screwdriver in a narrow space, which comprises a screwdriver head, a screwdriver rod, a connecting rod, a rotating rod, a first bevel gear, a second bevel gear, a third bevel gear and a fourth bevel gear; the screwdriver head is connected with the screwdriver rod, and a first bevel gear is fixed at the upper end of the screwdriver rod; one end of the connecting rod is fixed with a second bevel gear, and the other end of the connecting rod is fixed with a third bevel gear; the second bevel gear is meshed with the first bevel gear; the third bevel gear is meshed with a fourth bevel gear at the lower end of the rotating rod; the screwdriver pole with the connecting rod is certain angle, the connecting rod with the dwang is certain angle.

Further, the screwdriver bit is made of a magnetic material.

Further, a screw arbor pipe sleeve, a connecting rod pipe sleeve and a rotating rod pipe sleeve are respectively arranged on the outer sides of the screw arbor, the connecting rod and the rotating rod.

Further, a screwdriver handle is arranged at the upper end of the rotating rod.

Furthermore, a supporting rod parallel to the rotating rod is fixed on the outer side of the rotating rod pipe sleeve.

Furthermore, the support rod is provided with a support rod pipe sleeve, and the support rod pipe sleeve is connected with the rotating rod pipe sleeve.

Furthermore, the upper end of the support rod is connected with a spring, and the lower end of the support rod is fixed with a rubber ball.

Furthermore, the supporting rod pipe sleeve is also provided with a screw hole, and the supporting rod is fixed on the supporting rod pipe sleeve through a screw.

Furthermore, the support rod pipe sleeve is also provided with a screwdriver handle, and the screwdriver handle is parallel to the connecting rod.

Further, the screwdriver rod with the angle between the connecting rod is 90 °, the connecting rod with the angle between the dwang is 90 °, the screwdriver rod with the dwang is parallel.

The utility model discloses convenient operation can stretch into narrow and small operation space and carry out the loading and unloading of screw, makes operation space more free, has shortened the operation time, has improved the security of operation, has reduced jaw's operation's damage and has guaranteed the operation effect.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Drawings

Fig. 1 is a block diagram of a preferred embodiment of the present invention.

Wherein: 1-screwdriver bit, 2-screwdriver bit, 3-first bevel gear, 4-connecting rod, 5-second bevel gear, 6-third bevel gear, 7-rotating rod, 8-fourth bevel gear, 9-screwdriver bit sleeve, 10-connecting rod sleeve, 11-rotating rod sleeve, 12-screwdriver handle, 13-rubber ball, 14-support rod, 15-spring, 16-support rod sleeve, 17-screw, 18-screwdriver handle.

Detailed Description

The technical contents of the preferred embodiments of the present invention will be more clearly understood and appreciated by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments, and the scope of the invention is not limited to the embodiments described herein.

In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.

As shown in the figure, a jaw surgery screwdriver in a narrow space, a screwdriver bit 1 is connected with a screwdriver rod 2, a first bevel gear 3 is fixed at the upper end of the screwdriver rod 2, a second bevel gear 5 at the far end of a connecting rod 4 is meshed with the first bevel gear 3 at the upper end of the screwdriver rod 2, a third bevel gear 6 at the near end of the connecting rod 4 is meshed with a fourth bevel gear 8 at the lower end of a rotating rod 7, and a screwdriver rod pipe sleeve 9, a connecting rod pipe sleeve 10 and a rotating rod pipe sleeve 11 are respectively arranged at the outer sides of the screwdriver rod 2, the connecting rod 4 and the rotating rod 7; a screwdriver handle 12 is fixed at the upper end of the rotating rod 7, a rubber ball 13 is fixed at the lower end of a supporting rod 14, the upper end of the supporting rod 14 is connected with a spring 15, and a supporting rod pipe sleeve 16 is arranged outside the supporting rod 14; the front side of the support rod pipe sleeve 16 is connected with the rear side of the rotating rod pipe sleeve 11, a screw 17 is arranged below the rear side of the support rod pipe sleeve 16 for adjusting and fixing the length of the support rod 14 extending out of the support rod pipe sleeve 16, and a screwdriver handle 18 is arranged above the rear side of the support rod pipe sleeve 16.

In this embodiment, the angle between screwdriver rod 2 and connecting rod 4 is 90, and the angle between connecting rod 4 and dwang 7 is 90, and screwdriver rod 2 is parallel with dwang 7.

When the screw 17 is tightened, the extension length of the support rod 14 is fixed, the screwdriver head 1, the screwdriver rod 2 and the connecting rod 4 are extended into a narrow space to a selected position, the screwdriver head 1 is connected with the screw, and the rubber ball 13 at the lower end of the support rod 14 is fixed at a proper position, so that a doctor can lift the screwdriver handle 18 with one hand and rotate the screwdriver handle 12 with the other hand. With the rotation of the screwdriver handle 12, the rotating rod 7 is enabled to rotate to advance or retreat along the axis, and through the meshing of the fourth bevel gear 8 and the third bevel gear 6, the rotating stroke of the rotating rod 7 is transmitted to the connecting rod 4 in a certain proportion, so that the connecting rod 4 rotates to advance or retreat along the axis along the connecting rod 4; similarly, through the meshing of the second bevel gear 5 with the first bevel gear 3, the rotation axis motion of the connecting rod 4 is transmitted to the screwdriver rod 2 in a certain proportion; the rotating motion of the screwdriver rod 2 drives the screwdriver head 1 coaxial with the screwdriver rod to rotate, and then screws are screwed or removed.

In other optional embodiments of the present invention, the motion of the rotating rod 7, the connecting rod 4 and the screwdriver rod 2 can be at an angle other than 90 degrees, so that the present invention can be adapted to a complicated operation space.

In other optional embodiments of the present invention, the screwdriver rod sleeve 9, the connecting rod sleeve 10 and the rotating rod sleeve 11 are preferably made of antibacterial medical materials in consideration of the need of sterility of the surgical environment.

In other optional embodiments of the present invention, considering that it is inconvenient to place the screw at a specific position, it is preferable that the screwdriver bit 1 is made of a magnetic material; for non-magnetic materials, preferably, a claw-shaped fixing device with adjustable radius is further fixed at the joint of the screwdriver bit 1 and the screwdriver rod 2, the claw-shaped fixing device is coaxial with the screwdriver bit 1 and the screwdriver rod 2, and the claw-shaped front end can grab a screw so as to place the screw into a part with tightening.

Compared with the prior medical screwdriver, the straight rod of the medical screwdriver moves, and the prior medical screwdriver ensures that the moving stroke of the screw head is difficult to grasp due to larger or undersize size, so that the medical screwdriver is not suitable for the prior jaw surgery environment. This use is novel through setting up two sets of intermeshing's bevel gear, turns into the straight-bar motion of the screwdriver pole that is certain angle with it, just the screwdriver handle with the formation of screwdriver pole can be through two sets of bevel gear proportional control, and then can use the screwdriver handle with arbitrary angle and suitable size, in the operation position, convenient operation has guaranteed that narrow and small operation space carries out the free loading and unloading of screw, has improved the security of operation, has reduced jaw's operation's damage and has guaranteed the operation effect.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the teachings of this invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. A jaw bone operation screwdriver in a narrow space is characterized by comprising a screwdriver head, a screwdriver rod, a connecting rod, a rotating rod, a first bevel gear, a second bevel gear, a third bevel gear and a fourth bevel gear; the screwdriver head is connected with the screwdriver rod, and a first bevel gear is fixed at the upper end of the screwdriver rod; one end of the connecting rod is fixed with a second bevel gear, and the other end of the connecting rod is fixed with a third bevel gear; the second bevel gear is meshed with the first bevel gear; the third bevel gear is meshed with a fourth bevel gear at the lower end of the rotating rod; the screwdriver pole with the connecting rod is certain angle, the connecting rod with the dwang is certain angle.

2. The narrow space jaw bone surgical screwdriver as recited in claim 1, wherein said screwdriver bit is made of magnetic material.

3. The surgical screwdriver as claimed in claim 1, wherein a screwdriver bar sleeve, a connecting bar sleeve and a rotating bar sleeve are respectively provided at outer sides of the screwdriver bar, the connecting bar and the rotating bar.

4. The narrow space jaw bone surgical screwdriver as claimed in claim 1, wherein a screwdriver handle is arranged at the upper end of the rotating rod.

5. The narrow space jaw bone surgical screwdriver as claimed in claim 3, wherein a support rod parallel to the rotation rod is fixed outside the rotation rod pipe sleeve.

6. The surgical screwdriver as claimed in claim 5, wherein the support rod is provided with a support rod socket connected to the rotation rod socket.

7. The surgical screwdriver as claimed in claim 5, wherein the support rod is connected with a spring at its upper end and a rubber ball at its lower end.

8. The surgical screwdriver as claimed in claim 6, wherein the supporting rod casing is further provided with a screw hole, and the supporting rod is fixed to the supporting rod casing by a screw.

9. The surgical screwdriver as claimed in claim 6, wherein the support rod sleeve is further provided with a screwdriver handle, and the screwdriver handle is parallel to the connecting rod.

10. The narrow space jaw bone surgical screwdriver as claimed in any one of claims 1 to 9, wherein the angle between the screwdriver bar and the connecting rod is 90 °, the angle between the connecting rod and the rotating rod is 90 °, and the screwdriver bar is parallel to the rotating rod.