Medical drill bit connecting structure

Abstract

The utility model discloses a medical drill bit connecting structure which comprises a fixing cavity, a positioning hole is formed in the fixing cavity, fixing plates are fixedly connected to the two sides, away from each other, of the fixing cavity, a two-way screw is rotationally connected to the fixing plates, and an auxiliary rod is fixedly connected between the two fixing plates. Extrusion sleeves are fixedly connected to the two sides, away from each other, of the two-way screw rod, limiting grooves are formed in the three sides, away from each other, of the fixing cavity, triangular plates make contact with the interiors of the limiting grooves, and limiting strips are fixedly connected to the portions, located in the fixing cavity, of the triangular plates, and clamping blocks are fixedly connected to the sides, away from the triangular plates, of the limiting strips; the three triangular plates and the three clamping blocks which can move relatively are arranged in the fixing cavity, the extrusion sleeve and the round ball which move relatively are matched, the three clamping blocks can correspond to clamping grooves in a drill bit for limiting, and the drill bit can be clamped in the clamping grooves in the drill bit. Therefore, the adaptability of drill bit connection is improved, the connection effect is better, and the drilling efficiency of the drill bit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical drill bits, in particular to a medical drill bit connection structure. Background Art

[0002] Medical drills are a commonly used tool in the medical field, mainly used for drilling holes in orthopedic surgery. Usually, many kinds of drills with different diameters are required according to different surgical needs and locations, so as to make holes in bones and insert steel nails, steel plates and other fixation devices.

[0003] According to the "Connection Structure of a Medical Drill Bit" with Chinese Patent Publication No. CN213372294U, it mainly describes that the drill bit can be positioned and fixed by utilizing the cooperation of the adjusting limit sleeve and the drill limit ring. At the same time, the setting of the reset spring can achieve timely reset of the adjusting limit sleeve, thereby fixing the drill bit. The device has a simple structure. During operation, it only needs to push the drill bit inward and rotate it to cooperate with the drill bit fixing slot to achieve the fixation of the drill bit, and finally lock it with the adjusting clamp rod. In this process, since the diameters of the drill bits required during the operation are inconsistent, the drill bits need to be replaced during use. Connecting and clamping only one drill bit will affect the progress of the operation.

[0004] Therefore, a medical drill bit connection structure is proposed to solve the problem that in the process, due to the inconsistent diameters of the drill bits required during the operation, the drill bits need to be replaced during use, and connecting and clamping only one drill bit will affect the progress of the operation. Summary of the invention

[0005] The technical problem to be solved by the utility model is that during surgery, drill bits with various diameters need to be connected to a drill bit connection cavity, and the connection efficiency is low. Therefore, a medical drill bit connection structure is proposed.

[0006] The technical solution adopted by the utility model to solve the technical problem is: a medical drill bit connection structure, including a fixing cavity, a positioning hole is opened in the fixing cavity, two sides of the fixing cavity away from each other are fixedly connected with fixing plates, a bidirectional screw is rotatably connected to the fixing plate, an auxiliary rod is fixedly connected between the two fixing plates, two sides of the bidirectional screw away from each other are fixedly connected with an extrusion sleeve, three sides of the fixing cavity away from each other are opened with limiting grooves, a triangular plate is contacted in the limiting groove, the triangular plate is located in the fixing cavity and fixedly connected with a limiting strip, the limiting strip is fixedly connected with a clamping block on the side away from the triangular plate, a protrusion is fixedly connected to one side of the triangular plate and the triangular plate is located on the side of the protrusion and contacts with a pad, the pad is fixedly connected with a limiting rod, and the limiting rod is movably plugged into the fixing cavity.

[0007] As a preferred technical solution of the utility model, a positioning rod is inserted on the pad, and the positioning rod is threadedly connected to the protrusion on the triangular plate. By setting the positioning rod, the protrusion can be used to limit the triangular plate, and multiple different blocks can be easily replaced.

[0008] As a preferred technical solution of the utility model, one side of the triangular plate is in contact with a ball, and the ball is rotatably embedded in the extrusion sleeve. The friction of the movement of the extrusion sleeve is reduced by providing the ball.

[0009] As a preferred technical solution of the utility model, three spring rods are fixedly connected to the side of the fixed cavity away from the positioning hole, and the output end of the spring rod is fixedly connected to a clamping block. By arranging the spring rods and the clamping block, the positioning hole can be cooperated to assist in fixing drill bits of different diameters.

[0010] As a preferred technical solution of the utility model, a handle is provided on one side of the fixed cavity, and the handle is fixedly connected to one end of the bidirectional screw. The rotation of the bidirectional screw can be easily adjusted by providing the handle.

[0011] The utility model has the following advantages: by arranging three relatively movable triangular plates and clamping blocks in the fixed cavity, and cooperating with relatively movable extrusion sleeves and round balls, the three clamping blocks can be limited by the clamping grooves on the drill bit, thereby increasing the adaptability of the drill bit connection, achieving a better connection effect, and improving the drilling efficiency of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a side cross-sectional structural schematic diagram of a medical drill bit connection structure in a preferred embodiment of the utility model;

[0013] Figure 2 It is a three-dimensional structural schematic diagram of a medical drill bit connection structure in a preferred embodiment of the utility model;

[0014] Figure 3 It is a schematic diagram of the enlarged structure of position A of a medical drill bit connection structure in a preferred embodiment of the utility model.

[0015] Explanation of the reference numerals: 1. fixing cavity; 2. positioning hole; 3. fixing plate; 4. bidirectional screw; 5. auxiliary rod; 6. extrusion sleeve; 7. limiting groove; 8. triangular plate; 9. limiting strip; 10. clamping block; 11. pad; 12. limiting rod; 13. positioning rod; 14. spring rod; 15. clamping block; 16. handle; 17. ball. DETAILED DESCRIPTION

[0016] The utility model will be further described below in conjunction with the accompanying drawings.

[0017] Please refer to Figure 1-3A medical drill bit connection structure shown in the figure comprises a fixed cavity 1, which is a cavity for fixing the drill bit (provided with rotation by connecting with a driving structure), a positioning hole 2 is provided in the fixed cavity 1, two sides of the fixed cavity 1 that are far away from each other are fixedly connected with fixed plates 3, a bidirectional screw 4 is rotatably connected with the fixed plate 3, an auxiliary rod 5 is fixedly connected between the two fixed plates 3, rotating the bidirectional screw 4 can drive an extrusion sleeve 6 to be relatively close or relatively far away, two sides of the bidirectional screw 4 that are far away from each other are fixedly connected with an extrusion sleeve 6, and three sides of the fixed cavity 1 that are far away from each other are provided with limiting grooves 7, and the limiting grooves 7 are provided on the three sides of the fixed cavity 1 that are far away from each other. There is a triangle plate 8 in contact with the groove 7, and the triangle plate 8 is located in the fixed cavity 1 and fixedly connected to a limiting strip 9. The limiting strip 9 is fixedly connected to a clamping block 10 on the side away from the triangle plate 8. When the extrusion sleeve 6 is relatively close, it will squeeze the inclined surface of the triangle plate 8, and make the triangle plate 8 move toward the center point of the fixed cavity 1, and clamp the infiltrated drill bit. A protrusion is fixedly connected to one side of the triangle plate 8 and the triangle plate 8 is located on the side of the protrusion and is in contact with a pad 11. The pad 11 is fixedly connected to a limiting rod 12, and the limiting rod 12 is movably inserted into the fixed cavity 1. The pad 11 cooperates with the limiting rod 12 to enable the triangle plate 8 to move stably.

[0018] The raised thread on the triangle plate 8 is connected with a positioning rod 13, and the positioning rod 13 is plugged into the backing plate 11. By providing the positioning rod 13, the triangle plate 8 and the clamping block 10 can be disassembled and replaced when the positioning rod 13 is disassembled.

[0019] Among them, a ball 17 is rotatably embedded in the extrusion sleeve 6, and the ball 17 contacts one side of the triangular plate 8. The ball 17 contacts the inclined surface of the triangular plate 8 to reduce friction, making it easier for the clamping block 10 to clamp the positioning point on the drill rod and stably clamp the drill rod.

[0020] Among them, the clamping block 15 is fixedly connected to the output end of the spring rod 14, and the spring rod 14 is fixedly connected in the fixing cavity 1. By setting the spring rod 14 and the clamping block 15, with the cooperation of the positioning hole 2, the drill rod can be assisted in positioning, and the rotation of the drill rod and the fixing cavity 1 will not be affected after the drill rod is clamped.

[0021] Among them, one end of the bidirectional screw rod 4 is fixedly connected with a handle 16, and the handle 16 is located on the upper side of the fixed cavity 1. By providing the handle 16, the bidirectional screw rod 4 can be easily rotated.

[0022] Working principle: insert the drill rod into the fixed cavity 1, and fix it with assistance through the cooperation of the positioning hole 2 and the clamping block 15, then rotate the handle 16 to drive the bidirectional screw 4 to rotate, and make the two extrusion sleeves 6 move relative to each other, the ball 17 squeezes the inclined surface of the triangular plate 8, so that the triangular plate 8 and the clamping block 10 move toward the center point of the fixed cavity 1, and make the clamping block 10 contact the positioning point on the drill rod, and then the limit strip 9 contacts the side of the drill rod, so as to clamp the drill rods of different diameters and make the clamping more stable. At the same time, when the positioning point on the drill rod is restricted, the positioning rod 13 can be rotated and disassembled, so that the triangular plate 8 can be disassembled and replaced, thereby further improving the adaptability of the drill bit connection structure.

[0023] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

[0024] Other parts of the present invention not described in detail belong to the prior art and will not be described here.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A medical drill bit connection structure, comprising a fixing cavity (1), wherein a positioning hole (2) is provided in the fixing cavity (1), characterized in that: The two sides of the fixed cavity (1) away from each other are fixedly connected with fixed plates (3), the fixed plates (3) are rotatably connected with a bidirectional screw (4), an auxiliary rod (5) is fixedly connected between the two fixed plates (3), the two sides of the bidirectional screw (4) away from each other are fixedly connected with an extrusion sleeve (6), the three sides of the fixed cavity (1) away from each other are provided with limiting grooves (7), the limiting grooves (7) are in contact with a triangular plate (8), the triangular plate (8) is located in the fixed cavity (1) and is fixedly connected with a limiting strip (9), the side of the limiting strip (9) away from the triangular plate (8) is fixedly connected with a clamping block (10), one side of the triangular plate (8) is fixedly connected with a protrusion and the triangular plate (8) is located on the side of the protrusion and is in contact with a pad (11), the pad (11) is fixedly connected with a limiting rod (12), and the limiting rod (12) is movably plugged into the fixed cavity (1).

2. A medical drill bit connection structure as claimed in claim 1, characterized in that: A positioning rod (13) is inserted into the pad (11), and the positioning rod (13) is threadedly connected to a protrusion on the triangular plate (8).

3. A medical drill bit connection structure as claimed in claim 2, characterized in that: One side of the triangular plate (8) contacts a round ball (17), and the round ball (17) is rotatably embedded in the extrusion sleeve (6).

4. A medical drill bit connection structure as claimed in claim 1, characterized in that: Three spring rods (14) are fixedly connected to a side of the fixing cavity (1) away from the positioning hole (2), and a clamping block (15) is fixedly connected to the output end of the spring rod (14).

5. A medical drill bit connection structure as claimed in claim 4, characterized in that: A handle (16) is provided on one side of the fixing cavity (1), and the handle (16) is fixedly connected to one end of the bidirectional screw (4).

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