Angle-adjustable guide drill

Abstract

The angle-adjustable guide drill comprises a handle and a guide drill bit, one end of the handle is connected with a rotating rod, the outer wall of the rotating rod is sleeved with an outer cylinder, an end hole is formed in the end face of the outer cylinder, and a swing plate penetrates through the end hole; through the rotary rod, the outer cylinder, the rotary swing arm, the assembly frame, the locking block, the swing plate and the driving block, a guide drill bit is installed on the swing plate rotationally connected to the outer cylinder through the shaft column, when the angle of the guide drill bit needs to be adjusted, the locking block is lifted upwards and separated from a locking groove, the outer cylinder is held by one hand, and the handle installed on the rotary rod is held by the other hand; the rotating rod is rotated, the rotating rod drives the rotating swing arm to rotate, the sliding block on the rotating swing arm slides up and down in the sliding groove in the surface of the driving block and drives the driving block to horizontally swing at the same time, rotating locking is achieved by inserting the locking block into the locking groove after adjustment is completed, and therefore angle adjustment can be achieved without the need for the hand to make contact with the guide drill bit. And the adjustment is more sanitary and safer.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to an angle-adjustable guide drill. Background Art

[0002] Total hip replacement is the first choice for treating hip diseases in the elderly in recent years. Due to the rapid development of surgery, the surgery has gradually matured. The complications that follow are becoming more and more prominent. Reducing and avoiding mistakes in total hip surgery is a key measure to reduce postoperative complications and improve surgical results.

[0003] After the acetabular cup prosthesis is installed, if it is found that the press fit between the acetabular cup and the acetabular fossa is not sufficient to provide reliable initial stability, screws are needed for auxiliary fixation. At this time, it is necessary to use a bone drill in conjunction with a guide drill to drill a screw hole channel on the acetabular fossa, and then screw in the screw for auxiliary fixation. Inappropriate drilling position and drilling angle will cause peripheral vascular nerve damage. The angle-adjustable guide drill with application number CN202020087860.4, the elastic telescopic part is located in the sleeve, one end is inserted in one of the recesses, and the other end is against the other end of the sleeve. The sliding sleeve is movably sleeved on the sleeve along the length direction of the sleeve, and an adjustment long hole is provided on the sleeve along the length direction of the sleeve. The connecting piece is provided with an adjustment long hole and connects the sliding sleeve and the elastic telescopic part respectively. Preferably, the elastic telescopic part includes a core shaft and an elastic part. The utility model can adjust the angle of the guide drill bit, which is easy to find a suitable direction of nail insertion, reduces the probability of surgical errors, shortens the operation time, has a clever design, a simple structure, is easy to manufacture, and has a low cost. It is suitable for large-scale promotion and application, but has the following defects:

[0004] (1) The above-mentioned drill guide can achieve angle adjustment. However, when adjusting, the adjustment part must be unlocked first, and then the hand touches the drill guide to swing and adjust it to achieve adjustment. However, since the drill guide is a medical device, and when the hand touches and adjusts the angle, it is very easy for hand bacteria to adhere to the surface of the drill bit, resulting in contamination of the medical device and unsanitary and unsafe problems. For this reason, we propose an angle-adjustable drill guide. Utility Model Content

[0005] The utility model aims to provide an angle-adjustable drill guide to solve the problem in the background art that when adjusting the drill bit, the hand may come into contact with the drill bit, which may easily lead to contamination of the drill bit and make the medical device unhygienic and unsafe.

[0006] The cam is secured to the bottom of the drive shaft and is provided with a lock member which is adapted to engage the cam and to engage with the lock member so that the cam can be locked.

[0007] Preferably, a rotating groove with a circular cross-section is formed on the outer wall of the rotating rod, a rotating block is provided inside the rotating groove, and the rotating block is fixed on the inner wall of the outer cylinder.

[0008] Preferably, a spring is sleeved on the outer wall of the pull rod, and the spring is located inside the assembly frame.

[0009] Preferably, a bracelet is fixed to the other end of the pull rod, and the longitudinal section of the bracelet is a circular structure.

[0010] Preferably, ball grooves are provided on both side surfaces of the sliding block, and balls are embedded in the ball grooves.

[0011] Preferably, the cross section of the locking block is a circular structure, and the end surface of the locking block is provided with an arc surface.

[0012] Preferably, the longitudinal sections of the rotating rod and the outer cylinder are both circular structures, and the central axes of the rotating rod and the outer cylinder coincide with each other.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) Through the designed rotary rod, outer cylinder, rotary swing arm, assembly frame, locking block, swing plate and driving block, the drill guide is installed on the swing plate connected to the outer cylinder through the shaft column rotation. When the angle of the drill guide needs to be adjusted, the locking block is lifted up and separated from the locking groove. One hand holds the outer cylinder and the other hand holds the handle installed on the rotary rod. The rotary rod rotates, and the rotary rod drives the rotary swing arm to rotate. The upper slider of the rotary swing arm slides up and down in the sliding groove on the surface of the driving block, and also drives the driving block to swing horizontally. After the adjustment is completed, the locking block is inserted into the locking groove to realize rotation locking, so that the utility model can realize the utility model. Now the angle adjustment can be achieved without touching the drill guide bit with hands, making the adjustment more hygienic and safe. Through the designed rotating block and rotating groove, the rotation of the rotating rod can be limited to the inside of the outer cylinder, ensuring that the rotating rod can rotate relatively in the outer cylinder without axial slippage. Through the designed spring, the spring exerts elastic squeezing effect on the locking block, ensuring that the locking block is more firmly stuck in the locking groove and is not easy to separate. Through the designed wrist ring, the fingers are placed in the wrist ring to facilitate the lifting and pulling of the pull rod. The designed ball plays a lubricating role to reduce the influence of the sliding friction resistance between the slider and the slide groove on one side of the driving block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a front cross-sectional view of the assembly of the rotary rod, the outer cylinder and the swing plate of the utility model;

[0017] Figure 3 This is an assembly side view of the outer cylinder, the locking block and the swing plate of the utility model;

[0018] Figure 4 It is a three-dimensional diagram of the rotary rod of the utility model;

[0019] Figure 5 This is a three-dimensional diagram of the assembly of the rotating swing arm and the slider of the utility model;

[0020] Figure 6 It is a three-dimensional diagram of the driving block of the utility model.

[0021] In the figure: 1. handle; 2. rotating rod; 3. swing plate; 4. drill guide; 5. outer cylinder; 6. pull rod; 7. bracelet; 8. assembly frame; 9. locking groove; 10. rotating block; 11. slide groove; 12. driving block; 13. end hole; 14. shaft column; 15. slider; 16. rotating swing arm; 17. rotating groove; 18. spring; 19. locking block; 20. ball bearing. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example

[0024] See also Figures 1 to 6 The utility model provides a technical solution: an angle-adjustable drill guide, comprising a handle 1 and a drill guide bit 4, one end of the handle 1 is connected to a rotary rod 2, the outer wall of the rotary rod 2 is sleeved with an outer cylinder 5, the end surface of the outer cylinder 5 is provided with an end hole 13, the interior of the end hole 13 is penetrated by a swing plate 3, the surface of the swing plate 3 is penetrated by a shaft column 14, the shaft column 14 is fixed on the inner wall of the end hole 13, the drill guide bit 4 is fixed on one end surface of the swing plate 3, the other end of the swing plate 3 is fixed with a driving block 12, and one end surface of the driving block 12 is provided with a slide groove 1 1, a slider 15 is arranged on the inner side of the slide groove 11, a rotating swing arm 16 is fixed on one end of the rotating rod 2, one end of the rotating swing arm 16 is connected to the slider 15, a locking groove 9 is arranged in a circular array on the side wall of the rotating rod 2, an assembly frame 8 is inlaid on the side wall of the outer cylinder 5, a locking block 19 is arranged inside the assembly frame 8, one end of the locking block 19 is placed inside the locking groove 9, a pull rod 6 is passed through the end surface of the assembly frame 8, through the designed rotating rod 2, outer cylinder 5, rotating swing arm 16, assembly frame 8, locking block 19, swing plate 3 and driving block 12, The drill guide 4 is mounted on the swing plate 3 which is connected to the outer cylinder 5 by the shaft column 14. When the angle of the drill guide 4 needs to be adjusted, the locking block 19 is lifted up and separated from the locking groove 9. The outer cylinder 5 is held with one hand, and the handle 1 installed on the rotary rod 2 is held with the other hand. The rotary rod 2 is rotated, and the rotary rod 2 drives the rotary swing arm 16 to rotate. The slider 15 on the rotary swing arm 16 slides up and down in the sliding groove 11 on the surface of the driving block 12, and also drives the driving block 12 to swing horizontally. After the adjustment is completed, the locking block 19 is inserted into the locking groove 9 to realize The rotation locking enables the utility model to achieve angle adjustment without touching the drill guide 4 with hands, making the adjustment more hygienic and safe. One end of the pull rod 6 is connected to the surface of the locking block 19. The outer wall of the rotating rod 2 is provided with a rotating groove 17 with a circular cross-section. The inner side of the rotating groove 17 is provided with a rotating block 10. Through the designed rotating block 10 and rotating groove 17, the rotation of the rotating rod 2 is restricted inside the outer tube 5, ensuring that the rotating rod 2 can rotate relatively inside the outer tube 5 without axial slippage. The rotating block 10 is fixed to the inner wall of the outer tube 5.

[0025] In this embodiment, preferably, the outer wall of the pull rod 6 is provided with a spring 18. Through the designed spring 18, the spring 18 applies elastic squeezing effect to the locking block 19, ensuring that the locking block 19 is more firmly stuck in the locking groove 9 and is not easy to separate. The spring 18 is inside the assembly frame 8, and a bracelet 7 is fixed to the other end of the pull rod 6. Through the designed bracelet 7, the fingers are placed in the bracelet 7 to facilitate the lifting and pulling of the pull rod 6. The longitudinal section of the bracelet 7 is a circular structure.

[0026] In this embodiment, preferably, ball grooves are provided on both side surfaces of the slider 15, and balls 20 are embedded in the ball grooves. The designed balls 20 play a lubricating role, thereby reducing the influence of the sliding friction resistance between the slider 15 and the slide groove 11 on one side of the driving block 12. The cross-section of the locking block 19 is a circular structure, and the end face of the locking block 19 is provided with an arc surface. The longitudinal sections of both the rotating rod 2 and the outer cylinder 5 are circular structures, and the central axes of the rotating rod 2 and the outer cylinder 5 coincide with each other.

[0027] The working principle and use process of the utility model are as follows: the utility model installs the drill guide 4 on the swing plate 3 connected to the outer cylinder 5 by the shaft column 14. When the angle of the drill guide 4 needs to be adjusted, the locking block 19 is lifted up and separated from the locking groove 9, one hand holds the outer cylinder 5, and the other hand holds the handle 1 installed on the rotary rod 2, and the rotary rod 2 is rotated. The rotary rod 2 drives the rotating swing arm 16 to rotate, and the sliding block 15 on the rotating swing arm 16 slides up and down in the sliding groove 11 on the surface of the driving block 12, and also drives the driving block 12 to swing horizontally. After the adjustment is completed, the locking block 19 is inserted into the locking groove 9 to realize rotation locking, wherein the spring 18 applies elastic force to the locking block 19 to ensure that the locking block 19 is stuck in the locking groove 9 more firmly and is not easy to separate. The utility model can adjust the drill bit angle by rotating the handle end, so that the utility model can be realized without touching the drill guide 4 with the hand, and its adjustment is more hygienic and safe.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An angle-adjustable drill guide, comprising a handle (1) and a drill guide bit (4), characterized in that: One end of the handle (1) is connected to a rotary rod (2), the outer wall of the rotary rod (2) is sleeved with an outer cylinder (5), the end surface of the outer cylinder (5) is provided with an end hole (13), the interior of the end hole (13) is penetrated by a swing plate (3), the surface of the swing plate (3) is penetrated by a shaft column (14), the shaft column (14) is fixed on the inner wall of the end hole (13), the drill guide (4) is fixed on one end surface of the swing plate (3), the other end of the swing plate (3) is fixed with a driving block (12), one end surface of the driving block (12) is provided with a slide groove (11), the slide groove A slider (15) is arranged on the inner side of the outer cylinder (11), a rotating swing arm (16) is fixed to one end of the rotating rod (2), one end of the rotating swing arm (16) is connected to the slider (15), the side wall of the rotating rod (2) is provided with locking grooves (9) in a circular array, the side wall of the outer cylinder (5) is inlaid with an assembly frame (8), a locking block (19) is arranged inside the assembly frame (8), one end of the locking block (19) is placed inside the locking groove (9), a pull rod (6) passes through the end surface of the assembly frame (8), one end of the pull rod (6) is connected to the surface of the locking block (19).

2. The angle-adjustable drill guide according to claim 1, characterized in that: The outer wall of the rotating rod (2) is provided with a rotating groove (17) with a circular cross section, and a rotating block (10) is arranged inside the rotating groove (17), and the rotating block (10) is fixed on the inner wall of the outer cylinder (5).

3. The angle-adjustable drill guide according to claim 1, characterized in that: The outer wall of the pull rod (6) is sleeved with a spring (18), and the spring (18) is located inside the assembly frame (8).

4. The angle-adjustable drill guide according to claim 3, characterized in that: A wristband (7) is fixed to the other end of the pull rod (6), and the longitudinal section of the wristband (7) is a circular structure.

5. The angle-adjustable drill guide according to claim 1, characterized in that: Ball grooves are provided on both side surfaces of the slider (15), and rolling balls (20) are embedded in the ball grooves.

6. The angle-adjustable drill guide according to claim 1, characterized in that: The cross section of the locking block (19) is a circular structure, and the end surface of the locking block (19) is provided with an arc surface.

7. The angle-adjustable drill guide according to claim 1, characterized in that: The longitudinal sections of the rotating rod (2) and the outer cylinder (5) are both circular structures, and the central axes of the rotating rod (2) and the outer cylinder (5) coincide with each other.

Images