Nail extractor for orthopedics department

Abstract

The utility model discloses an orthopaedic nail extractor in the technical field of nail extractors, which comprises a holding shell and an operating rod, the holding shell is transversely arranged, a mounting plate is welded on one side of the bottom end of the holding shell, and the middle part of the mounting plate is vertically and rotatably connected with a driving shaft. The universal joint is formed between the driving shaft, the middle rod and the operating rod through the first rotating ball and the second rotating ball, the upper bevel gear at the upper end of the driving shaft is meshed with the driving bevel gear, power of the motor is transmitted to the driving shaft, the bottom end of the operating rod can rotate universally, and the power of the driving shaft is transmitted to the bottom end of the operating rod. The movable holding barrel on the operating rod can be conveniently clamped by the index finger and the thumb, the button at the bottom of the holding shell can be conveniently pressed by the fingers to carry out sleeve knob operation, the device is transversely held on the palm, the fingers at the front end operate the vertical operating rod and the bone nail buckle knob, no large shielding shadow exists, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of nail removers, in particular to an orthopedic nail remover. Background Art

[0002] Bone screws are non-active surgical metal implants for bone joining, consisting of cortical bone screws (full thread and half thread) and cancellous bone screws (full thread and half thread). Bone screws are implanted in the patient's body to internally fix the fracture site. The bone screws and steel plates are used to connect the reduced bones to help the bones repair correctly. After the patient completes rehabilitation, the implanted bone screws need to be removed to facilitate complete recovery later. The existing bone screw removal is done with pliers.

[0003] However, the existing orthopedic nail removal method uses hand-operated pliers or electric screwdrivers to remove the bone nail knobs. Since the pliers and electric screwdrivers have a large straight length, the operating end is not easy to operate. At the same time, since the hand needs to hold the operating end, the vertical holding method is prone to a large blind spot of visual field obstruction, which is not easy to operate in the narrow operating area of ​​the operation and the use effect is not good. Based on this, the utility model designs an orthopedic nail remover to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an orthopedic nail remover to solve the problem that the above-mentioned pliers and electric screwdrivers have a large straight length and the operating end is difficult to operate. Since the hand needs to hold the operating end, the vertical holding method is prone to a large blind spot of the visual field, which is difficult to operate in a narrow operating area of ​​the operation.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The gear train is connected with the gear of the motor to the upper and lower ends of the gear train, and the gear train is connected with the gear of the motor to the upper and lower ends of the gear train, and the gear train is connected with the gear of the motor to the upper and lower ends of the gear train.

[0007] As a further solution of the utility model: the upper end of the grip shell is streamlined, and the surface of the grip shell is frosted.

[0008] As a further solution of the utility model: the diameter of the upper bevel gear is larger than the diameter of the driving bevel gear, and the motor is a servo motor.

[0009] As a further solution of the utility model: the outer wall of the holding tube is connected with a rubber ring, and the rubber ring is made of elastic rubber.

[0010] As a further solution of the utility model: the power supply assembly includes a battery and a compartment cover, a battery compartment is opened inside the grip shell, a battery is installed inside the battery compartment, and the compartment cover is clamped at the open end of the battery compartment.

[0011] As a further solution of the utility model: the width of the battery compartment is greater than the width of the battery, and the depth of the battery compartment is greater than the length of the battery.

[0012] As a further solution of the utility model: an indicator light is embedded and connected to the front end of the grip shell, and the indicator light is an LED lamp bead.

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

[0014] 1. In the utility model, a universal joint is formed between the driving shaft, the middle rod and the operating rod through the first rotating ball and the second rotating ball. The upper bevel gear at the upper end of the driving shaft is meshed with the driving bevel gear. The power of the motor is transmitted to the driving shaft. The bottom end of the operating rod can be universally rotated and transmits the power of the driving shaft to the bottom end of the operating rod. It is suitable for operation in a narrow space. The movable gripping tube on the operating rod can be conveniently clamped by the index finger and the thumb. The button at the bottom of the gripping shell can be conveniently pressed by the finger to operate the sleeve knob. The device is held horizontally in the palm of the hand, and the front finger operates the vertical operating rod and the bone screw buckle knob. There will be no large shielding shadow, which is convenient for operation.

[0015] 2. In the utility model, a rubber ring is connected to the outer wall of the grip tube, and the rubber ring is made of elastic rubber. The rubber ring made of elastic rubber on the grip tube increases friction, which is convenient for stable gripping of fingers. An indicator light is embedded in the front end of the grip shell, and the indicator light is an LED lamp bead. The indicator light at the front end of the grip shell indicates the power level. The indicator light of the LED lamp bead has low power consumption and saves energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall explosion structure of the utility model;

[0018] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4 It is a bottom-up three-dimensional structural schematic diagram of the utility model.

[0020] In the figure: 1. grip shell; 2. mounting plate; 3. drive shaft; 4. upper bevel gear; 5. first rotating ball; 6. middle rod; 7. second rotating ball; 8. operating rod; 9. locking bolt; 10. sleeve; 11. motor; 12. driving bevel gear; 13. grip tube; 14. rubber ring; 15. button; 16. battery compartment; 17. battery; 18. compartment cover; 19. indicator light. DETAILED DESCRIPTION

[0021] 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.

[0022] Example:

[0023] See also Figure 1-Figure 4In the embodiment of the utility model, an orthopedic nail remover includes a gripping shell 1 and an operating rod 8. The gripping shell 1 is arranged horizontally. A mounting plate 2 is welded to one side of the bottom end of the gripping shell 1. The middle part of the mounting plate 2 is vertically rotatably connected to a driving shaft 3. An upper bevel gear 4 is welded to the upper end of the driving shaft 3. A first rotating ball 5 is rotatably connected to the bottom of the driving shaft 3. The first rotating ball 5 is rotatably connected to a middle rod 6 relative to the driving shaft 3 in another direction. A second rotating ball 7 is rotatably connected to the bottom of the middle rod 6. The second rotating ball 7 is rotatably connected to the middle rod 6 in another direction relative to the middle rod 6. The operating rod 8 is rotatably connected, and the driving shaft 3, the middle rod 6 and the operating rod 8 form a universal joint with each other through the first rotating ball 5 and the second rotating ball 7. The bottom end of the operating rod 8 is threadedly connected to the locking bolt 9. The bottom end of the operating rod 8 is connected to the sleeve 10 through the locking bolt 9. A card slot is provided in the sleeve 10. A gripping tube 13 is sleeved on the operating rod 8. A motor 11 is fixedly installed inside the gripping housing 1. The output end of the motor 11 is connected to a driving bevel gear 12. The driving bevel gear 12 matches and meshes with the upper bevel gear 4. The gripping housing 1 The bottom of the grip shell 1 is embedded with a button 15, a power supply component is installed inside the grip shell 1, the horizontal grip shell 1 is placed in the palm of the hand and tightened, the grip shell 1 is used to vertically fix the drive shaft 3 through the mounting plate 2, the drive shaft 3, the middle rod 6 and the operating rod 8 form a universal joint through the first rotating ball 5 and the second rotating ball 7, the upper bevel gear 4 at the upper end of the drive shaft 3 is meshed with the drive bevel gear 12, the power of the motor 11 is transmitted to the drive shaft 3, the bottom end of the operating rod 8 can be universally rotated, and the power of the drive shaft 3 is transmitted to the operating rod 8. The bottom end of the operating rod 8 drives the sleeve 10 to rotate, which is suitable for operation in a narrow space. The slot inside the sleeve 10 is engaged with the top of the bone screw. The movable holding tube 13 on the operating rod 8 can be convenient for the index finger and thumb to clamp, and the button 15 at the bottom of the holding shell 1 can be convenient for the finger to press to operate the sleeve 10 knob. The device is held horizontally in the palm of the hand, and the front finger operates the vertical operating rod 8 and the bone screw buckle knob. There will be no large obstruction and shadow, and the sleeve 10 can be replaced and is suitable for a variety of bone screws. The device is easy to operate and has a good use effect.

[0024] Preferably, Figure 1 As shown, the upper end of the grip shell 1 is streamlined, and the surface of the grip shell 1 is frosted. The streamlined grip shell 1 is convenient for palm holding, and the frosted surface of the grip shell 1 is convenient for overall stable holding.

[0025] Preferably, Figure 2 and Figure 3 As shown, the diameter of the upper bevel gear 4 is larger than the diameter of the driving bevel gear 12, and the motor 11 is a servo motor. The driving bevel gear 12 with a smaller diameter cooperates with the motor 11 to provide a larger torque, and the servo motor 11 is stably driven to provide stable power.

[0026] Preferably, as shown in the figure, the outer wall of the gripping tube 13 is connected with a rubber ring 14, and the rubber ring 14 is made of elastic rubber. The rubber ring 14 made of elastic rubber on the gripping tube 13 increases friction and facilitates stable gripping by fingers.

[0027] Preferably, Figure 1 As shown, the power supply component includes a battery 17 and a compartment cover 18. A battery compartment 16 is opened inside the grip shell 1, and a battery 17 is installed inside the battery compartment 16. The compartment cover 18 is clamped on the open end of the battery compartment 16. The battery 17 is embedded in the battery compartment 16 and is closed by the compartment cover 18. The battery 17 provides power.

[0028] Preferably, Figure 2 As shown, the width of the battery compartment 16 is greater than the width of the battery 17, and the depth of the battery compartment 16 is greater than the length of the battery 17. The wider and deeper battery compartment 16 facilitates the quick and stable placement of the battery 17, and is convenient for installation and placement.

[0029] Preferably, Figure 1 As shown, an indicator light 19 is embedded and connected to the front end of the holding shell 1. The indicator light 19 is an LED lamp bead. The indicator light 19 at the front end of the holding shell 1 indicates the power level. The LED lamp bead indicator light 19 has low power consumption and saves energy.

[0030] The working principle of the utility model is as follows: the power supply component provides electric energy for the device, the horizontal holding shell 1 is placed in the palm and tightened, the holding shell 1 is used to vertically fix the drive shaft 3 through the mounting plate 2, the drive shaft 3, the middle rod 6 and the operating rod 8 form a universal joint through the first rotating ball 5 and the second rotating ball 7, the upper bevel gear 4 at the upper end of the drive shaft 3 is meshed with the drive bevel gear 12, the power of the motor 11 is transmitted to the drive shaft 3, the bottom end of the operating rod 8 can be universally rotated, and the power of the drive shaft 3 is transmitted to the bottom end of the operating rod 8, thereby driving the sleeve 10 to rotate, which is suitable for operation in a narrow space, the card slot inside the sleeve 10 is engaged with the top of the bone screw, the movable holding tube 13 on the operating rod 8 can be convenient for the index finger and thumb to clamp, the button 15 at the bottom of the holding shell 1 can be convenient for the finger to press, and the sleeve 10 knob operation is performed, the device is horizontally held in the palm, and the front finger operates the vertical operating rod 8 and the bone screw buckle knob, there will be no large shielding shadow, and the sleeve 10 can be replaced, suitable for a variety of bone screws, and the device is easy to operate.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An orthopedic nail remover, comprising a holding shell (1) and an operating rod (8), characterized in that: The holding shell (1) is arranged horizontally, and a mounting plate (2) is welded to one side of the bottom end of the holding shell (1). The middle part of the mounting plate (2) is vertically rotatably connected to the driving shaft (3). The upper end of the driving shaft (3) is welded to an upper bevel gear (4). The bottom of the driving shaft (3) is rotatably connected to a first rotating ball (5). The first rotating ball (5) is rotatably connected to a middle rod (6) relative to the driving shaft (3). The bottom of the middle rod (6) is rotatably connected to a second rotating ball (7). The second rotating ball (7) is rotatably connected to an operating rod (8) relative to the middle rod (6). The driving shaft (3), the middle rod (6) and the operating rod (8) are connected to each other via the first rotating ball. (5) and the second rotating ball (7) form a universal joint with each other, one side of the bottom end of the operating rod (8) is threadedly connected to the locking bolt (9), the bottom end of the operating rod (8) is connected to the sleeve (10) through the locking bolt (9), the sleeve (10) is provided with a slot, the operating rod (8) is sleeved with a holding tube (13), a motor (11) is fixedly installed inside the holding shell (1), the output end of the motor (11) is connected to a driving bevel gear (12), the driving bevel gear (12) matches and meshes with the upper bevel gear (4), a button (15) is embedded in the bottom of the holding shell (1), and a power supply component is installed inside the holding shell (1).

2. The orthopedic nail remover according to claim 1, characterized in that: The upper end of the grip shell (1) is streamlined, and the surface of the grip shell (1) is frosted.

3. The orthopedic nail remover according to claim 1, characterized in that: The diameter of the upper bevel gear (4) is greater than the diameter of the driving bevel gear (12), and the motor (11) is a servo motor.

4. The orthopedic nail remover according to claim 1, characterized in that: The outer wall of the holding tube (13) is connected to a rubber ring (14), and the rubber ring (14) is made of elastic rubber.

5. The orthopedic nail remover according to claim 1, characterized in that: The power supply assembly comprises a storage battery (17) and a compartment cover (18); a battery compartment (16) is provided inside the grip shell (1), a storage battery (17) is installed inside the battery compartment (16), and the compartment cover (18) is snap-connected to the open end of the battery compartment (16).

6. The orthopedic nail remover according to claim 5, characterized in that: The width of the battery compartment (16) is greater than the width of the storage battery (17), and the depth of the battery compartment (16) is greater than the length of the storage battery (17).

7. The orthopedic nail remover according to claim 1, characterized in that: An indicator light (19) is embedded and connected to the front end of the grip shell (1), and the indicator light (19) is an LED lamp bead.

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