Conveniently replaceable ultrasonic bone cutter head

Abstract

The utility model relates to medical instrument technical field, concretely is a convenient replacement's ultrasonic osteotome head, including bone knife handle, one end fixedly connected with connecting seat of bone knife handle, the surface of connecting seat is inserted with the head body, the surface both sides of connecting seat are slidably connected with the limiting block, and the limiting block is embedded in the surface of head body, the surface of connecting seat is slidably connected with fixed plate, and fixed plate is pressed in the surface one end of limiting block, the surface both sides of fixed plate are fixedly connected with elastic clamping block, and elastic clamping block is buckled in the surface of connecting seat, beneficial effect is: through the cooperation of fixed plate, limiting block and limiting groove, realize the quick disassembly and installation of head body, through the embedding of elastic clamping block in the clamping groove, avoid the loosening of head body under the condition of cutting force and vibration, increase the stability and security of head installation, through the setting of positioning block and positioning groove, provide the guidance and positioning auxiliary to head body installation, improve the installation efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to an ultrasonic osteotome cutter head which is convenient to replace. Background Technique

[0002] In the fields of modern orthopedic surgery and oral and maxillofacial surgery, etc., the ultrasonic osteotome has become an indispensable important medical device. It utilizes the principle of ultrasonic vibration and can precisely perform operations such as cutting and grinding on bone tissue.

[0003] In the prior art, the ultrasonic osteotome usually consists of a cutter head, a connecting seat, an ultrasonic connector, a transducer, etc. After the cutter head works for a period of time, it needs to be replaced. When replacing, generally insert the front end of the cutter head into the inner cavity of the connecting seat and fix the cutter head and the connecting seat by using screws of a specific model.

[0004] However, the ultrasonic osteotome cutter head needs to use a special screwdriver to unscrew multiple small screws for disassembly, and after installing a new cutter head, its position and angle need to be precisely adjusted. The whole process may take several minutes, resulting in low installation efficiency. Even in some emergency or long surgeries, it will seriously affect the surgical efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to provide an ultrasonic osteotome cutter head which is convenient to replace, so as to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an ultrasonic osteotome cutter head which is convenient to replace, including an osteotome handle, one end of the osteotome handle is fixedly connected with a connecting seat, the surface of the connecting seat is plugged with a cutter head body, both sides of the surface of the connecting seat are slidably connected with limiting blocks, the limiting blocks are embedded in the surface of the cutter head body, the surface of the connecting seat is slidably connected with a fixing plate, the fixing plate presses against one end surface of the limiting block, both sides of the surface of the fixing plate are fixedly connected with elastic clamping blocks, and the elastic clamping blocks are buckled on the surface of the connecting seat.

[0007] Preferably, the connecting seat is in an annular plate-shaped structure with a cross-section of "L", both sides of the surface of the connecting seat are provided with fixing grooves, the fixing grooves are in a "middle" - shaped groove, both sides of the surface of the connecting seat are provided with clamping grooves, the clamping grooves are in an arc-shaped groove with a cross-section of "L", and one side of the inner wall of the connecting seat is provided with a positioning groove, and the positioning groove is in a semi-circular groove.

[0008] Preferably, the limiting block is plugged on the surface of the fixing groove, the limiting block is in a square block structure, one end surface of the limiting block is provided with an inclined surface, both sides of the surface of the limiting block are fixedly connected with sliding blocks, the surface of the sliding blocks is fixedly connected with rubber blocks, and the other end of the rubber blocks is fixedly connected to the surface of the fixing groove, and the rubber blocks are in a stretched state.

[0009] Preferably, the fixing plate is in an annular plate structure. Central grooves are provided on both sides of the surface of the fixing plate. The central grooves are circular grooves with a "convex" cross-section. A central rod is slidably connected to the surface of the central groove. The central rod is in a circular plate structure with a "T" cross-section. One end of the central rod is fixedly connected to the surface of the connecting seat. A spring is sleeved on the surface of the central rod. One end of the spring is fixedly connected to one end of the central rod, and the other end of the spring is fixedly connected to the surface of the central groove.

[0010] Preferably, the elastic clamping block is in an "L" plate structure. A groove is provided on the surface of the elastic clamping block. One end of the elastic clamping block is embedded in the surface of the clamping groove.

[0011] Preferably, limiting grooves are provided on both sides of the surface of the cutter head body. The limiting grooves are square grooves. One end of the limiting block away from the fixing plate is clamped in the limiting grooves to brake the cutter head body. A positioning block is fixedly connected to one end surface of the fixing plate. The positioning block is in a semi-cylindrical structure. The positioning block is slidably connected to the surface of the positioning groove.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The conveniently replaceable ultrasonic bone cutter head proposed by the present utility model realizes the rapid disassembly and installation of the cutter head body through the mutual cooperation of the fixing plate, the limiting block and the limiting groove. By arranging the elastic clamping block embedded in the clamping groove, the secondary fixation of the cutter head body is realized, avoiding the loosening of the cutter head body under the action of cutting force and vibration, increasing the stability and safety of the cutter head installation. By arranging the positioning block and the positioning groove, guidance and positioning assistance are provided for the installation of the cutter head body, improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a front half-sectional schematic structural diagram of the present utility model;

[0016] Figure 3 is Figure 2 an enlarged schematic diagram of the structure at A in

[0017] Figure 4 is a side half-sectional schematic structural diagram of the present utility model;

[0018] Figure 5 is Figure 4 an enlarged schematic diagram of the structure at B in

[0019] Figure 6 is a partial schematic structural diagram of the present utility model.

[0020] In the diagram: 1. Bone scalpel handle; 2. Fixing plate; 3. Blade body; 4. Connecting seat; 5. Limiting block; 6. Sliding block; 7. Rubber block; 8. Positioning block; 9. Elastic locking block; 10. Center groove; 11. Center rod; 12. Spring; 13. Limiting groove; 14. Locking groove; 15. Fixing groove; 16. Positioning groove; 17. Groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Example 1

[0023] Please see Figures 1 to 2 This utility model provides a technical solution: a replaceable ultrasonic bone scalpel tip, including a bone scalpel handle 1, a connecting seat 4 fixedly connected to one end of the bone scalpel handle 1, a blade body 3 inserted into the surface of the connecting seat 4, limiting blocks 5 slidably connected to both sides of the surface of the connecting seat 4, the limiting blocks 5 embedded in the surface of the blade body 3, a fixing plate 2 slidably connected to the surface of the connecting seat 4, the fixing plate 2 pressing against one end surface of the limiting block 5, and elastic locking blocks 9 fixedly connected to both sides of the surface of the fixing plate 2, the elastic locking blocks 9 fastening to the surface of the connecting seat 4. Through the cooperation of the fixing plate 2, the limiting blocks 5 and the limiting groove 13, the blade body 3 can be quickly disassembled and installed. By setting the elastic locking blocks 9 embedded in the locking groove 14, the blade body 3 is secondary fixed, preventing the blade body 3 from loosening under cutting force and vibration, increasing the stability and safety of the blade body 3 installation. By setting the positioning block 8 and the positioning groove 16, the installation of the blade body 3 is guided and positioned, improving the installation efficiency.

[0024] Example 2

[0025] Please see Figures 1 to 4, on the basis of the first embodiment, in order to clamp and fix the cutter head body 3, the connecting seat 4 is in the shape of an annular plate with a cross-section of "L". Fixing grooves 15 are formed on both sides of the surface of the connecting seat 4. The fixing grooves 15 are in the shape of a "zhong" character groove. Card slots 14 are formed on both sides of the surface of the connecting seat 4. The card slots 14 are arc-shaped grooves with a cross-section of "L". A positioning groove 16 is formed on one side of the inner wall of the connecting seat 4. The positioning groove 16 is a semi-circular groove. The limiting block 5 is inserted on the surface of the fixing groove 15. The limiting block 5 is in the shape of a square block. A slope is provided on one end surface of the limiting block 5. When the fixing plate 2 slides, it can squeeze the limiting block 5 along the slope, so as to smoothly cover the surface of the limiting block 5 and squeeze it. Sliding blocks 6 are fixedly connected to both sides of the surface of the limiting block 5. The sliding blocks 6 are provided to limit the movement range of the limiting block 5, avoiding the falling off or excessive movement amplitude of the limiting block 5. Rubber blocks 7 are fixedly connected to the surface of the sliding blocks 6. The other end of the rubber block 7 is fixedly connected to the surface of the fixing groove 15, and the rubber block 7 is in a stretched state. When the fixing plate 2 squeezes the limiting block 5, the rubber block 7 changes from the original state to the stretched state, making the limiting block 5 tend to move to the initial position. When the fixing plate 2 no longer squeezes the limiting block 5, the rubber block 7 returns from the stretched state to the original state, separating the limiting block 5 from the limiting groove 13, so that the cutter head body 3 loses its limit, and then the cutter head body 3 can be replaced.

[0026] Embodiment Three

[0027] Please refer to Figures 1 to 6, on the basis of the second embodiment, in order to position and secondarily limit the tool head body 3, the fixing plate 2 is in an annular plate structure. On both sides of the surface of the fixing plate 2, a central groove 10 is provided. The central groove 10 is a circular groove with a "convex" cross-section. A central rod 11 is slidably connected to the surface of the central groove 10. The central rod 11 is in a circular plate structure with a "T" cross-section. The central rod 11 and the central groove 10 cooperate with each other to limit the movement range of the fixing plate 2. One end of the central rod 11 is fixedly connected to the surface of the connecting seat 4. A spring 12 is sleeved on the surface of the central rod 11. One end of the spring 12 is fixedly connected to one end of the central rod 11, and the other end of the spring 12 is fixedly connected to the surface of the central groove 10. The elastic restoring force of the spring 12 can pull the fixing plate 2 back to its initial position. The elastic clamping block 9 is in an "L" plate structure. One end of the elastic clamping block 9 is provided with an inclined surface. When the inclined surface is squeezed by the surface of the connecting seat 4, the elastic clamping block 9 will deform towards the two sides away from each other until it is embedded in the clamping groove 14. The elastic clamping block 9 and the clamping groove 14 are closely matched to prevent the fixing plate 2 from falling off due to vibration. A groove 17 is provided on the surface of the elastic clamping block 9. The groove 17 is provided to facilitate applying force to the elastic clamping block 9, thereby facilitating separating the elastic clamping block 9 from the clamping groove 14. One end of the elastic clamping block 9 is embedded in the surface of the clamping groove 14. On both sides of the surface of the tool head body 3, a limiting groove 13 is provided. The limiting groove 13 is a square groove. The end of the limiting block 5 away from the fixing plate 2 is clamped in the limiting groove 13 to brake the tool head body 3. A positioning block 8 is fixedly connected to one end surface of the fixing plate 2. The positioning block 8 is in a semi-cylindrical structure. The positioning block 8 is slidably connected to the surface of the positioning groove 16. Through the cooperation of the positioning block 8 and the positioning groove 16, the tool head body 3 can only be installed in a specific direction, preventing the tool head body 3 from being installed in the wrong position or direction.

[0028] During actual use, first, pull the elastic clamping block 9 towards the two sides away from each other to disengage the elastic clamping block 9 from the clamping groove 14, and slide the fixing plate 2 towards the end away from the clamping groove 14. At this time, the spring 12 inside the fixing plate 2 changes from its original state to a compressed state, the fixing plate 2 no longer squeezes the surface of the limiting block 5, and the rubber block 7 returns to its original state from the stretched state, springing back the two limiting blocks 5 towards the ends away from each other. Then, push the positioning block 8 on the surface of the tool head body 3 into the positioning groove 16. Finally, release the fixing plate 2, and the spring 12 returns from the compressed state to its original state. The fixing plate 2 squeezes the limiting block 5 through the inclined surface on the surface of the limiting block 5. Finally, continue to push the fixing plate 2, and the elastic clamping block 9 is clamped in the clamping groove 14. At this time, one end of the limiting block 5 is squeezed and clamped in the limiting groove 13, realizing the rapid fixing and disassembly of the tool head body 3.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A replaceable ultrasonic bone scalpel tip, comprising a bone scalpel handle (1), one end of which is fixedly connected to a connecting seat (4), characterized in that: The surface of the connecting seat (4) is plugged with a cutter head body (3). On both sides of the surface of the connecting seat (4), there are slidingly connected limit blocks (5). The limit blocks (5) are embedded in the surface of the cutter head body (3). On the surface of the connecting seat (4), there is a slidingly connected fixing plate (2). The fixing plate (2) presses against one end surface of the limit block (5). On both sides of the surface of the fixing plate (2), there are fixedly connected elastic clamping blocks (9). The elastic clamping blocks (9) are buckled on the surface of the connecting seat (4).

2. The easily replaceable ultrasonic bone scalpel tip according to claim 1, characterized in that: The connecting seat (4) has an annular plate-like structure with a cross-section of "L". On both sides of the surface of the connecting seat (4), there are fixed grooves (15). The fixed grooves (15) are in the shape of a "zhong" character groove. On both sides of the surface of the connecting seat (4), there are clamping grooves (14). The clamping grooves (14) are arc-shaped grooves with a cross-section of "L". On one side of the inner wall of the connecting seat (4), there is a positioning groove (16). The positioning groove (16) is a semi-circular groove.

3. The easily replaceable ultrasonic bone scalpel tip according to claim 2, characterized in that: The limit blocks (5) are plugged on the surface of the fixed grooves (15). The limit blocks (5) have a square block-like structure. One end surface of the limit block (5) has an inclined surface. On both sides of the surface of the limit block (5), there are fixedly connected sliding blocks (6). On the surface of the sliding blocks (6), there are fixedly connected rubber blocks (7). The other end of the rubber blocks (7) is fixedly connected to the surface of the fixed grooves (15), and the rubber blocks (7) are in a stretched state.

4. The easily replaceable ultrasonic bone scalpel tip according to claim 1, characterized in that: The fixing plate (2) has an annular plate-like structure. On both sides of the surface of the fixing plate (2), there are central grooves (10). The central grooves (10) are circular grooves with a cross-section of "convex" character. On the surface of the central grooves (10), there is a slidingly connected central rod (11). The central rod (11) has a circular plate-like structure with a cross-section of "T". One end of the central rod (11) is fixedly connected to the surface of the connecting seat (4). On the surface of the central rod (11), there is a sleeved spring (12). One end of the spring (12) is fixedly connected to one end of the central rod (11), and the other end of the spring (12) is fixedly connected to the surface of the central groove (10).

5. The easily replaceable ultrasonic bone scalpel tip according to claim 2, characterized in that: The elastic clamping blocks (9) have an "L" - shaped plate-like structure. On the surface of the elastic clamping blocks (9), there are grooves (17). One end of the elastic clamping blocks (9) is embedded in the surface of the clamping grooves (14).

6. The easily replaceable ultrasonic bone scalpel tip according to claim 2, characterized in that: On both sides of the surface of the cutter head body (3), there are limit grooves (13). The limit grooves (13) are square grooves. The end of the limit block (5) far from the fixing plate (2) is clamped in the limit grooves (13) to brake the cutter head body (3). One end surface of the fixing plate (2) is fixedly connected with a positioning block (8). The positioning block (8) has a semi-cylindrical structure. The positioning block (8) is slidingly connected to the surface of the positioning groove (16).

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