Nail taking device for orthopedics department

Abstract

The nail taking device comprises a bottom plate, a fixing frame is fixedly arranged on one side of the upper end of the bottom plate, a connecting shaft is fixedly arranged at the upper end of the fixing frame, a rotating support is movably arranged on the surface of the outer side of the connecting shaft through a bearing, and a nail taking-out mechanism is arranged at the upper end of the rotating support. The taking-out mechanism comprises a movable rod, clamping teeth, a gear, a pulling-out head and a clamping groove, the movable rod is movably arranged on one side of the interior of the rotating support in a penetrating mode, the clamping teeth are evenly and fixedly arranged on the surface of the outer side of the movable rod, the gear is movably arranged in the rotating support through a rotating shaft, and the pulling-out head is fixedly arranged at the lower end of the movable rod. A clamping groove is formed in the surface of the outer side of the pulling-out head. According to the bone needle extractor, the extraction head can be driven to move up and down by utilizing the lever principle, so that the bone needle can be rapidly extracted while labor is saved.

Description

Technical Field

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

[0002] In fracture surgery, using steel nails and steel plates to fix the fracture site is a commonly used surgical method in existing surgeries. The steel nails need to be removed after being implanted in the human body for a period of time.

[0003] In the prior art, there are various devices for removing steel nails, including special removal instruments and doctors using pliers to directly remove steel nails. According to the Chinese invention patent with application number 202010875638.5 in the prior art, an orthopedic nail removal device is used. The threaded sleeve rod is driven to move by thread rotation, and the threaded sleeve rod 210 is rotated by two handles 205 to make the disc-shaped clamping block 212 slowly move away from the patient's affected limb. In the process of the disc-shaped clamping block 212 moving away from the patient's affected limb, the purpose of removing the nail from the patient's affected limb is achieved. However, the speed of removing steel nails by thread rotation is too slow, especially for inferior bone nails such as Kirschner wires. Normal doctors use anesthetics to paralyze the patient's diseased limb to remove the Kirschner wire, and then pull it out suddenly. Therefore, an orthopedic nail removal device needs to be improved to address this problem. Utility Model Content

[0004] The purpose of the utility model is to provide an orthopedic nail removal device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an orthopedic nail removal device, comprising a base plate, a fixing frame is fixedly provided on one side of the upper end of the base plate, a connecting shaft is fixedly provided on the upper end of the fixing frame, a rotating bracket is movably provided on the outer surface of the connecting shaft through a bearing, a nail removal mechanism is provided on the upper end of the rotating bracket, the removal mechanism comprises a movable rod, a latch tooth, a gear, a pulling head, and a slot, a movable rod is movably interspersed on one side of the inner part of the rotating bracket, a plurality of latch teeth are evenly fixedly provided on the outer surface of the movable rod, a gear is movably provided inside the rotating bracket through a rotating shaft, a pulling head is fixedly provided on the lower end of the movable rod, and a slot is provided on the outer surface of the pulling head.

[0006] Preferably, a groove is provided in the middle part of the upper end of the base plate, a first Velcro is provided on one side of the groove at the upper end of the base plate, a second Velcro is provided on the outer surface of the lower end of the base plate, and a through hole is provided at the upper end of the base plate. The groove is used to place the patient's diseased limb, and then the first Velcro is passed through the upper end of the patient's diseased limb, and then passed through the through hole and finally adhered to the second Velcro, which can fix the patient's diseased limb.

[0007] Preferably, a locking screw is provided on the outer surface of the connecting shaft through a threaded engagement. After the rotating bracket is adjusted to a suitable angle, the locking screw is tightened so that the locking screw squeezes the rotating bracket, thereby fixing the angle of the rotating bracket.

[0008] Preferably, a handle is fixedly provided at one end of the rotating shaft where the gear is located, and the gear can be easily rotated by the handle, so that the gear can be used to drive the movable rod and the pull-out head to move up and down.

[0009] Preferably, a pin hole is provided on the outer surface of the extraction head, and a latch is provided on one side of the extraction head. Since the bone screws inserted inside the fracture of some patients cannot be stuck by the slot, such as the Kirschner wire, the latch is inserted into the needle nose of the Kirschner wire so that the Kirschner wire can be easily pulled out.

[0010] Preferably, the gear and the latching teeth are meshed with each other, so that when the gear rotates, the engaging latching teeth can drive the movable rod to move up and down.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, medical staff can use the rotating handle to drive the gear to rotate, so that the gear can finally drive the movable rod and the extraction head to move up, and finally the bone screw can be pulled out. At this time, the handle and lever principle can be used to conveniently rotate the gear, and the rotation of the gear can quickly drive the movable rod to move up, thereby imitating the medical staff to quickly pull out the bone screw.

[0013] 2. The utility model utilizes a rotatable rotating bracket, so that the device can be adapted to pull out some bone screws that are installed obliquely. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an orthopedic nail removal device of the utility model;

[0015] Figure 2 This is a side view of an orthopedic nail removal device according to the utility model;

[0016] Figure 3 This is a bottom view of an orthopedic nail removal device according to the utility model;

[0017] Figure 4 This is an installation view of a gear in an orthopedic nail removal device of the utility model;

[0018] Figure 5 The utility model is a nail removal device for orthopedics Figure 1 Magnified view at A in the middle.

[0019] In the figure: 1. bottom plate; 2. fixing frame; 3. connecting shaft; 4. rotating bracket; 5. movable rod; 6. latch tooth; 7. gear; 9. extraction head; 8. handle; 10. slot; 11. groove; 12. first Velcro; 13. second Velcro; 14. through hole; 15. locking screw; 16. pin hole; 17. latch. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-5 The utility model provides a technical solution: an orthopedic nail removal device, comprising a base plate 1, a fixing frame 2 is fixedly arranged on one side of the upper end of the base plate 1, a connecting shaft 3 is fixedly arranged on the upper end of the fixing frame 2, a rotating bracket 4 is movably arranged on the outer surface of the connecting shaft 3 through a bearing, a mechanism for removing nails is arranged on the upper end of the rotating bracket 4, and the removal mechanism includes a movable rod 5, a locking tooth 6, a gear 7, a pulling head 9, and a slot 10. A movable rod 5 is movably interspersed on one side of the rotating bracket 4, a plurality of locking teeth 6 are evenly fixed on the outer surface of the movable rod 5, a gear 7 is movably arranged inside the rotating bracket 4 through a rotating shaft, a pulling head 9 is fixedly arranged on the lower end of the movable rod 5, and a slot 10 is provided on the outer surface of the pulling head 9.

[0022] A groove 11 is provided in the middle of the upper end of the bottom plate 1, a first Velcro 12 is provided on one side of the groove 11 at the upper end of the bottom plate 1, a second Velcro 13 is provided on the outer surface of the lower end of the bottom plate 1, a through hole 14 is provided at the upper end of the bottom plate 1, the groove 11 is used to place the patient's diseased limb, and then the first Velcro 12 is passed through the upper end of the patient's diseased limb, and then through the through hole 14 and finally adhered to the second Velcro 13, which can play a role in fixing the patient's diseased limb;

[0023] The outer surface of the connecting shaft 3 is provided with a locking screw 15 through a threaded engagement. After the rotating bracket 4 is adjusted to a suitable angle, the locking screw 15 is tightened so that the locking screw 15 squeezes the rotating bracket, which can play a role in fixing the angle of the rotating bracket.

[0024] A handle 8 is fixedly provided at one end of the rotating shaft where the gear 7 is located, and the gear 7 can be easily rotated by the handle 8, so that the gear 7 can be used to drive the movable rod 5 and the extraction head 9 to move up and down;

[0025] The outer surface of the extraction head 9 is provided with a pin hole 16, and one side of the extraction head 9 is provided with a plug 17. Since the bone screws inserted into the bone of some patients with fractures cannot be stuck by the card slot 10, such as a Kirschner wire, the plug 17 is inserted into the needle nose of the Kirschner wire so that the Kirschner wire can be easily pulled out;

[0026] The gear 7 and the latching teeth 6 are meshed with each other, so that when the gear 7 rotates, the latching teeth 6 can drive the movable rod 5 to move up and down;

[0027] Working principle: when using the device, the groove 11 is used to place the patient's diseased limb, and then the first Velcro 12 is passed through the upper end of the patient's diseased limb, and then through the through hole 14 and finally adhered to the second Velcro 13, which can play a role in fixing the patient's diseased limb; then the rotating bracket 4 is rotated according to the angle at which the bone screw is pulled out, and after the rotating bracket 4 is rotated to a suitable angle, the slot 10 of the extraction head 9 is aligned with the extraction position of the bone screw and then sleeved on the protrusion of the bone screw. After these operations are completed, tighten the locking screw 15 to fix the angle of the rotating bracket 4 and the extraction head 9, and then the medical staff can use the rotating handle 8 to drive the gear 7 to rotate, so that the gear 7 can finally drive the movable rod 5 and the extraction head 9 to move up, and finally the bone screw can be pulled out. At this time, the handle 8 and the lever principle can be used to conveniently rotate the gear 7, and the rotation of the gear 7 can quickly drive the movable rod 5 to move up, thereby imitating the medical staff to quickly pull out the bone screw;

[0028] It should be noted that this device is only suitable for bone screws without threaded connections, and these fixations can be quickly pulled out.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] 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 orthopedic nail removal device, comprising a base plate (1), characterized in that: A fixing frame (2) is fixedly arranged on one side of the upper end of the bottom plate (1), a connecting shaft (3) is fixedly arranged on the upper end of the fixing frame (2), a rotating bracket (4) is movably arranged on the outer surface of the connecting shaft (3) through a bearing, a mechanism for removing nails is arranged on the upper end of the rotating bracket (4), and the removal mechanism comprises a movable rod (5), a clamping tooth (6), a gear (7), a pulling head (9), and a clamping groove (10), a movable rod (5) is movably interspersed on one side of the inner part of the rotating bracket (4), a plurality of clamping teeth (6) are evenly fixedly arranged on the outer surface of the movable rod (5), a gear (7) is movably arranged inside the rotating bracket (4) through a rotating shaft, a pulling head (9) is fixedly arranged on the lower end of the movable rod (5), and a clamping groove (10) is provided on the outer surface of the pulling head (9).

2. The orthopedic nail removal device according to claim 1, characterized in that: A groove (11) is provided in the middle of the upper end of the bottom plate (1), a first Velcro (12) is provided on one side of the groove (11) at the upper end of the bottom plate (1), a second Velcro (13) is provided on the outer surface of the lower end of the bottom plate (1), and a through hole (14) is provided at the upper end of the bottom plate (1).

3. The orthopedic nail removal device according to claim 1, characterized in that: The outer surface of the connecting shaft (3) is provided with a locking screw (15) which is movably screwed in through a thread.

4. The orthopedic nail removal device according to claim 1, characterized in that: A handle (8) is fixedly provided at one end of the rotating shaft where the gear (7) is located.

5. The orthopedic nail removal device according to claim 1, characterized in that: The outer surface of the extraction head (9) is provided with a pin hole (16), and one side of the extraction head (9) is provided with a latch pin (17).

6. The orthopedic nail removal device according to claim 1, characterized in that: The gear (7) and the latching teeth (6) are meshed with each other.

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