An ultrasonic tissue cutting knife

Abstract

The utility model discloses an ultrasonic tissue cutting knife, including blade holder, blade body and ultrasonic wave amplitude lever, ultrasonic wave amplitude lever sets up at ultrasonic tissue cutting knife one end and the end face is equipped with the round mounting hole of blade holder installation, the one end of blade holder is equipped with the square mounting hole of blade body installation, the surface symmetrical mounting of ultrasonic wave amplitude lever has fixed sleeve, the inside fixed sleeve installs locking screw, and one end of locking screw penetrates blade holder and extends to the inside of blade body and is inserted with it. The ultrasonic tissue cutting knife, the structure design is reasonable, convenient to use, through the mode of bolt screwing and fixing and cooperation shielding limit, can greatly guarantee the installation of blade holder and the installation firmness of blade itself, makes it have better use effect in the operation process, can effectively reduce the pretightening force of fastening bolt simultaneously, can improve the service life of threaded cooperation under the condition of often disassembling blade.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic cutting technology, specifically to an ultrasonic tissue cutting knife. Background Technology

[0002] The core component of an ultrasonic tissue cutter is an ultrasonic piezoelectric transducer. Excited by an external ultrasonic frequency electrical signal, it generates mechanical vibrations of the same frequency and micrometer-level amplitude, driving the connected cutting head to perform surgical resection of human tissue. Compared to conventional scalpels, it has higher cutting efficiency and hemostatic function, making it a promising energy-based medical surgical instrument.

[0003] In existing blade mounting structures, the circular blade holder and the circular hole at the end of the ultrasonic amplitude transformer only have two contact points in the circumferential direction. The contact area is not large enough, requiring a large preload of the fastening screw. This not only results in low installation stability but also makes disassembly and replacement inconvenient due to the excessive preload. To address these issues, we propose an ultrasonic tissue cutting blade to solve the problems mentioned in the background section. Utility Model Content

[0004] The purpose of this invention is to provide an ultrasonic tissue cutting tool to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an ultrasonic tissue cutting scalpel, comprising a blade holder, a blade body, and an ultrasonic amplitude transformer. The ultrasonic amplitude transformer is disposed at one end of the ultrasonic tissue cutting scalpel and has a circular mounting hole on its end face for mounting the blade holder. One end of the blade holder has a square mounting hole for mounting the blade body. Fixing sleeves are symmetrically mounted on the surface of the ultrasonic amplitude transformer. Locking screws are installed inside the fixing sleeves. One end of the locking screw passes through the blade holder and extends into the blade body for insertion.

[0006] Furthermore, guide sliders are symmetrically installed on the outer side of the blade holder, and the ultrasonic amplitude transformer is provided with a guide groove corresponding to the position of the guide slider, which communicates with the circular mounting hole.

[0007] Furthermore, a circular plate is slidably connected to the inside of the fixed sleeve in the vertical direction. A rectangular baffle is integrally formed on the side of the circular plate near the blade holder. One end of the rectangular baffle extends into the guide groove and one side is in contact with the guide slider. Through holes adapted to the locking screw are opened on the circular plate and the rectangular baffle. The locking screw is threadedly connected to the blade holder.

[0008] Furthermore, an annular groove is provided on the side of the circular plate away from the blade holder, and a tension spring is fixedly connected between the inner wall of the annular groove and the inner wall of the fixed sleeve.

[0009] Furthermore, the fixed sleeve has a through-hole for screws on the side away from the ultrasonic amplitude transformer.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This invention involves inserting the blade body end into the innermost part of the blade holder, then inserting the blade holder into the circular mounting hole. The guide slider and guide groove are used for limiting the movement until it can no longer be pushed. A tool is then used to insert the locking screw from the screw insertion hole into the fixing sleeve, aligning it with the through hole. Pushing the locking screw inward first causes the circular plate and rectangular baffle to move towards the ultrasonic amplitude transformer, allowing the rectangular baffle to penetrate into the guide groove, thus blocking and limiting the right side of the guide slider. This forms the initial fixation of the blade holder. The locking screw is then rotated, its end screwed into the insertion hole on the outside of the blade body. This forms the secondary fixation of the blade holder and blade body, achieving a stable installation. This ultrasonic tissue cutter has a reasonable structural design and is easy to use. The bolt tightening and the blocking and limiting method maximize the stability of the blade mounting bracket and the blade itself, resulting in better performance during surgery. It also effectively reduces the preload of the bolts, increasing the service life of the threaded fit when the blade is frequently disassembled. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a cross-sectional view of the connection structure of the blade holder, blade body, and ultrasonic amplitude transformer of this utility model;

[0014] Figure 3 This is a three-dimensional structural diagram of the blade holder and blade body of this utility model;

[0015] Figure 4 This is a three-dimensional structural diagram of the circular plate and rectangular baffle of this utility model.

[0016] In the diagram: 1. Blade holder, 2. Blade body, 3. Ultrasonic amplitude transformer, 4. Circular mounting hole, 5. Square mounting hole, 6. Fixing sleeve, 7. Locking screw, 8. Guide slider, 9. Guide groove, 10. Circular plate, 11. Rectangular baffle, 12. Through hole, 13. Annular groove, 14. Tension spring, 15. Screw insertion hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 An ultrasonic tissue cutter includes a blade holder 1, a blade body 2, and an ultrasonic amplitude transformer 3. The ultrasonic amplitude transformer 3 is located at one end of the ultrasonic tissue cutter and has a circular mounting hole 4 on its end face for mounting the blade holder 1. One end of the blade holder 1 has a square mounting hole 5 for mounting the blade body 2. Fixing sleeves 6 are symmetrically mounted on the surface of the ultrasonic amplitude transformer 3. Locking screws 7 are installed inside the fixing sleeves 6. One end of the locking screws 7 passes through the blade holder 1 and extends into the blade body 2 to be inserted therein.

[0019] Guide sliders 8 are symmetrically installed on the outer side of the blade holder 1. The ultrasonic amplitude rod 3 has a guide groove 9 that communicates with the circular mounting hole 4 at the position corresponding to the guide slider 8.

[0020] Inside the fixed sleeve 6, a circular plate 10 is slidably connected in the vertical direction. A rectangular baffle 11 is integrally formed on the side of the circular plate 10 near the blade holder 1. One end of the rectangular baffle 11 extends into the guide groove 9 and one side is in contact with the guide slider 8. Through holes 12 adapted to the locking screw 7 are provided on the circular plate 10 and the rectangular baffle 11. The locking screw 7 is threadedly connected to the blade holder 1.

[0021] An annular groove 13 is provided on the side of the circular plate 10 away from the blade holder 1. A tension spring 14 is fixedly connected between the inner wall of the annular groove 13 and the inner wall of the fixing sleeve 6. When disassembling the blade holder 1, after unscrewing the locking screw 7, the tension spring 14 can pull the circular plate 10 and the rectangular baffle 11 back to their original positions, so that the rectangular baffle 11 no longer blocks the guide slider 8, making it easier to pull the blade holder 1 out from the circular mounting hole 4.

[0022] The fixed sleeve 6 has a through screw hole 15 on the side away from the ultrasonic amplitude transformer 3. The through screw hole 15 is for the insertion and accommodating of the locking screw 7.

[0023] This ultrasonic tissue cutter features a reasonable structural design and is easy to use. By tightening bolts and using a shielding and limiting mechanism, it maximizes the stability of the blade mounting bracket and the blade itself, resulting in better performance during surgery. At the same time, it effectively reduces the preload of the fastening bolts, thus extending the service life of the threaded connection when the blade is frequently disassembled.

[0024] In use, insert the end of the blade body 2 into the innermost part of the blade holder 1, then insert the blade holder 1 into the circular mounting hole 4. Use the guide slider 8 and guide groove 9 to limit the movement until it can no longer be pushed. Then, use a tool to insert the locking screw 7 from the screw insertion hole 15 into the inside of the fixing sleeve 6, and push it inward with the through hole 12 in front of it. This will first move the circular plate 10 and the rectangular baffle 11 to the side of the ultrasonic amplitude transformer 3. The tension spring 14 will be stretched, and the rectangular baffle 11 will pass through the guide groove 9, forming a blocking and limiting effect on the right side of the guide slider 8. This will form the initial fixation of the blade holder 1. Then, rotate the locking screw 7 to screw its end into the insertion hole on the outside of the blade body 2. This will form the secondary fixation of the blade holder 1 and the blade body 2, thus achieving a stable installation effect.

[0025] 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. An ultrasonic tissue cutting blade comprising a blade holder (1), a blade body (2) and an ultrasonic wave horn (3), characterized in that: The ultrasonic amplitude transformer (3) is located at one end of the ultrasonic tissue cutting knife and has a circular mounting hole (4) on its end face for mounting the blade holder (1). The blade holder (1) has a square mounting hole (5) at one end for mounting the blade body (2). Fixing sleeves (6) are symmetrically mounted on the surface of the ultrasonic amplitude transformer (3). Locking screws (7) are installed inside the fixing sleeves (6). One end of the locking screws (7) passes through the blade holder (1) and extends into the blade body (2) to be inserted therein.

2. The ultrasonic tissue shears according to claim 1, wherein: The blade holder (1) is symmetrically equipped with guide sliders (8), and the ultrasonic amplitude transformer (3) is provided with a guide groove (9) corresponding to the position of the guide slider (8) and communicating with the circular mounting hole (4).

3. The ultrasonic tissue shears according to claim 2, wherein: A circular plate (10) is slidably connected to the inside of the fixed sleeve (6) in the vertical direction. A rectangular baffle (11) is integrally formed on the side of the circular plate (10) near the blade holder (1). One end of the rectangular baffle (11) extends into the guide groove (9) and one side is in contact with the guide slider (8). Through holes (12) adapted to the locking screw (7) are provided on the circular plate (10) and the rectangular baffle (11). The locking screw (7) is threadedly connected to the blade holder (1).

4. The ultrasonic tissue shears according to claim 3, wherein: The circular plate (10) has an annular groove (13) on the side away from the blade holder (1), and a tension spring (14) is fixedly connected between the inner wall of the annular groove (13) and the inner wall of the fixed sleeve (6).

5. The ultrasonic tissue cutting scalpel according to claim 4, characterized in that: The fixing sleeve (6) has a through screw hole (15) on the side away from the ultrasonic amplitude transformer (3).

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