A surgical bone extraction drill

Abstract

The present invention provides a surgical bone extraction drill, which belongs to the technical field of medical devices and aims to solve the problem that the traditional open bone extraction operation mode is single and causes great damage to patients; it comprises a handle, a connecting head, a locking screw, movable teeth, a drill rod and an adjusting cap; the locking screw is fixedly placed on the handle; the connecting head is fixedly placed on one end of the locking screw; one end of the drill rod is integrally provided with a ratchet, and the other end is provided with saw teeth; the drill rod is movably placed on the connecting head, and the ratchet is located inside the connecting head; the movable teeth are hingedly placed in the connecting head, and ratchet teeth matching the ratchet are integrally provided on the movable teeth; the design of the present invention is simple to operate, highly safe, has strong stability, is suitable for clinical needs, realizes a small surgical incision, and also achieves the purpose of convenient and quick surgery.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a surgical bone extraction drill. Background Art

[0002] Traditional open bone harvesting has a single method, is complicated to operate, takes a long time to operate, causes excessive damage to the patient's body, and is prone to complications, increasing the patient's pain. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a surgical bone drill that is simple to operate, highly safe, has strong stability, is suitable for clinical needs, achieves a small surgical incision, and also achieves the purpose of convenient and quick surgery.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A surgical bone drill, characterized in that it includes a handle, a connecting head, a locking screw, movable teeth, a drill rod and an adjustment cap; the locking screw is fixedly placed on the handle; the connecting head is fixedly placed on one end of the locking screw; one end of the drill rod is integrally provided with a ratchet, and the other end is provided with saw teeth; the drill rod is movably placed on the connecting head, and the ratchet is located inside the connecting head; the movable teeth are hingedly placed in the connecting head, and the movable teeth are integrally provided with ratchet teeth matching the ratchet.

[0006] Preferably, the locking screw is threadedly connected to the handle; and the other end of the locking screw is provided with a hexagonal slot.

[0007] Preferably, one end of the connector is integrally provided with a connecting block matching the hexagonal slot.

[0008] Preferably, the connector includes an integrally formed rod body and a connecting tube; a bearing is fixedly provided in the connecting tube, and the drill rod is rotatably placed in the connecting tube via the bearing.

[0009] Preferably, a spring is fixedly provided in the connecting tube, and one end of the spring is fixedly placed on the movable tooth.

[0010] Preferably, one end of the connecting tube is internally threadedly connected with an adjusting cap; a positioning block is fixedly provided on the drill rod, a limiting groove matching the positioning block is provided in the connecting tube, and the positioning block is located between the adjusting cap and the ratchet.

[0011] Preferably, a long hole groove is provided at one end of the drill rod close to the saw teeth.

[0012] Preferably, the handle, the connector, the locking screw and the drill rod are respectively provided with communicating circular holes.

[0013] The beneficial effects of the present invention are:

[0014] The design of the present invention is simple to operate, highly safe, and has strong stability, is suitable for clinical needs, and can achieve a small surgical incision while also achieving the purpose of convenient and quick surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a surgical bone drill provided by an embodiment of the present invention;

[0017] Figure 2 A schematic diagram of the cross-sectional structure of a surgical bone drill provided by an embodiment of the present invention;

[0018] Figure 3 for Figure 2 A partial enlarged view of point B in the middle;

[0019] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction.

[0020] Description of reference numerals:

[0021] Saw teeth 1, adjusting cap 2, connecting head 3, handle 4, drill rod 5, long hole groove 6, locking screw 7, rod body 8, ratchet 9, bearing 10, movable teeth 11, spring 12, connecting tube 13, positioning pin 14, ratchet 15. DETAILED DESCRIPTION

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

[0023] It should be noted that, in the description of the present invention, terms such as "center", "upper", "lower", "horizontal", "inner", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0024] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] like Figures 1 to 4 As shown, a surgical bone drill comprises a handle 4, a connector 3, a locking screw 7, movable teeth 11, a drill rod 5 and an adjusting cap; the locking screw 7 is fixed on the handle 4; the connector 3 is fixed on one end of the locking screw 7; a ratchet 9 is integrally provided at one end of the drill rod 5, and a saw tooth 1 is provided at the other end; the drill rod 5 is movably placed on the connector 3, and the ratchet 9 is located inside the connector 3; the movable teeth 11 are hingedly placed in the connector 3, and a ratchet 15 matching the ratchet 9 is integrally provided on the movable teeth 11.

[0026] Furthermore, the locking screw 7 is threadedly connected to the handle 4; the other end of the locking screw 7 is provided with a hexagonal groove.

[0027] Furthermore, one end of the connector 3 is integrally provided with a connecting block matching the hexagonal slot.

[0028] Furthermore, the connector 3 includes an integrally formed rod body 8 and a connecting tube 13 ; a bearing 10 is fixedly disposed in the connecting tube 13 , and the drill rod 5 is rotatably placed in the connecting tube 13 via the bearing 10 .

[0029] Furthermore, a spring 12 is fixed in the connecting tube 13, and one end of the spring 12 is fixed on the movable tooth 11. In a natural state, the spring 12 will press the movable tooth 11 against the ratchet 9, so that the ratchet tooth 15 of the movable tooth 11 and the ratchet 9 are engaged, thereby fixing the ratchet 9; utilizing the principle of the ratchet 9, it is in a locked state when rotating forward and in a loose state when rotating reversely, thereby facilitating the screwing in of the drill rod 5.

[0030] Furthermore, one end of the connecting tube 13 is threadedly connected to the adjusting cap 2; corresponding pin holes are provided on the adjusting cap 2 and the connecting tube 13, and a positioning pin 14 is provided in the pin hole, and the movable tooth 11 is rotatably placed on the positioning pin 14; a positioning block 16 is fixedly provided on the drill rod 5, and a limiting groove matching the positioning block 16 is provided in the connecting tube 13, and the positioning block 16 is located between the adjusting cap 2 and the ratchet 9. The positioning block 16 rotates with the drill rod, and can prevent the drill rod 5 from axial sliding after being pressed down through the cooperation of the positioning block 16 and the limiting groove, thereby improving the stability of the bone drill.

[0031] Furthermore, a long hole groove 6 is provided at one end of the drill rod 5 close to the sawtooth 1 .

[0032] Furthermore, the handle 4, the connector 3, the locking screw 7 and the drill rod 5 are respectively provided with communicating circular holes, and the drilled bone fragments are stored in the circular holes for easy sampling.

[0033] Furthermore, the handle 4, the connector 3, the locking screw 7, the bearing 10, the drill rod 5, the positioning pin 14, the movable tooth 11, the spring 12, the adjustment cap 2 and the positioning block 16 are all made of stainless steel.

[0034] The design of the present invention is simple to operate, highly safe, and has strong stability, is suitable for clinical needs, and can achieve a small surgical incision while also achieving the purpose of convenient and quick surgery.

[0035] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A surgical bone drill, characterized in that: The invention comprises a handle, a connecting head, a locking screw, a movable tooth, a drill rod and an adjusting cap; the locking screw is fixedly arranged on the handle; the connecting head is fixedly arranged on one end of the locking screw; a ratchet is integrally provided at one end of the drill rod and a saw tooth is provided at the other end; the drill rod is movably arranged on the connecting head, and the ratchet is located inside the connecting head; the movable tooth is hingedly arranged in the connecting head, and a ratchet matching with the ratchet is integrally arranged on the movable tooth; the connecting head comprises an integrally formed rod body and a connecting cylinder; a bearing is fixedly arranged in the connecting cylinder, and the drill rod is rotatably placed in the connecting cylinder through the bearing; an adjusting cap is internally threadedly connected to one end of the connecting cylinder; a positioning block is fixedly arranged on the drill rod, a limiting groove matching with the positioning block is arranged in the connecting cylinder, and the positioning block is located between the adjusting cap and the ratchet; a long hole groove is provided at one end of the drill rod close to the saw tooth; and connected circular holes are respectively provided on the handle, the connecting head, the locking screw and the drill rod.

2. A surgical bone drill according to claim 1, characterized in that: The locking screw is threadedly connected to the handle; the other end of the locking screw is provided with a hexagonal groove.

3. A surgical bone drill according to claim 2, characterized in that: One end of the connector is integrally provided with a connecting block matching the hexagonal slot.

4. A surgical bone drill according to claim 1, characterized in that: A spring is fixedly arranged in the connecting cylinder, and one end of the spring is fixedly placed on the movable tooth.

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