Transducer retrograde ultrasonic bone cutter

Abstract

The utility model discloses an ultrasonic osteotome of transducer postposition, including handle shell, including the tail rod section, handheld section and head rod section who distributes in proper order along handle shell length direction, the inside of handle shell includes the accommodating cavity and guide cavity who sets up intercommunication, and the accommodating cavity is corresponded to the tail rod section setting, the guide cavity is corresponded to the handheld section setting, transducer sets up in the accommodating cavity, and the vibration end of transducer is towards the guide cavity, the amplitude bar is guided and sets up in the guide cavity, and one end of amplitude bar is connected to the vibration end of transducer, and the other end is towards the head of handle shell setting, the working tip is used to connect on the one end of amplitude bar who is away from transducer, can postposition the center of gravity of osteotome, is convenient for operating, and greatly reduces the radial dimension of osteotome front end, reduces the osteotome to the obstruction of working visual field in the operation, and promotes greater convenience.

Description

Technical Field

[0001] This utility model belongs to the field of ultrasonic equipment, and specifically relates to an ultrasonic bone scalpel with a transducer located at the rear. Background Technology

[0002] An ultrasonic bone scalpel is a precision surgical instrument that uses high-frequency ultrasonic vibrations to cut and shape bone tissue. Traditional ultrasonic bone scalpels typically place the transducer (the component that generates the ultrasonic waves) at the front or middle of the handle. This layout results in a forward-positioned center of gravity, making surgeons prone to fatigue during prolonged surgeries and affecting operational stability and precision. Furthermore, the relatively large size of the front area of ​​the scalpel can easily obstruct the view of the contact area between the working tip and tissue during operation, posing a risk of accidental injury to surrounding important nerves and blood vessels. Therefore, there is an urgent need for a new type of ultrasonic bone scalpel that can improve the operating experience. Utility Model Content

[0003] To address the aforementioned issues, this invention provides an ultrasonic bone scalpel with a rear-mounted transducer. This design allows the bone scalpel's center of gravity to be positioned rearward, facilitating operation and significantly reducing the radial dimension of the scalpel's tip. This also minimizes the obstruction of the surgical field of view by the bone scalpel during surgery, thereby enhancing convenience.

[0004] The technical solution of this utility model is as follows:

[0005] An ultrasonic bone scalpel with a rear-mounted transducer, comprising:

[0006] The handle housing includes a tail section, a hand grip section, and a head section distributed sequentially along the length of the handle housing. The interior of the handle housing includes a receiving cavity and a guide cavity that are connected to each other.

[0007] Furthermore, the receiving cavity is configured corresponding to the tail rod section, and the guide cavity is configured corresponding to the handheld section;

[0008] A transducer is disposed within the accommodating cavity, with the vibrating end of the transducer facing the guide cavity;

[0009] An amplitude rod is guided within the guide cavity, with one end connected to the vibrating end of the transducer and the other end facing the head of the handle housing.

[0010] The working tip is used to connect to the end of the amplitude rod that is away from the transducer.

[0011] In some embodiments, the outer diameter of the handheld section is smaller than the outer diameter of the tail rod section.

[0012] In some embodiments, the outer diameter of the head section is less than or equal to the outer diameter of the handpiece section.

[0013] In some embodiments, a water pipe is provided on the outer wall of the handle housing along the length direction, one end of the water pipe is connected to a water source, and the other end faces the working tip to discharge water, and the water pipe is arranged along the outer contour shape of the handle housing.

[0014] In some embodiments, the outer wall of the handle housing is provided with an insert groove, and the water pipe is detachably disposed in the insert groove.

[0015] In some embodiments, the mounting groove is recessed into the outer wall of the handle housing.

[0016] In some embodiments, a protruding mounting strip is provided on the outer wall of the handle housing, and the mounting groove is recessed in the mounting strip.

[0017] In some embodiments, a camera assembly is also included, disposed on the head section and facing the head of the working tip to capture images for visual assistance during operation.

[0018] In some embodiments, the camera assembly includes a wiring harness, and the head section has a through hole for the wiring harness to pass through into the inner cavity of the handle housing.

[0019] In some embodiments, a mounting base is provided on the head section corresponding to the camera assembly, and the camera assembly is detachably mounted on the mounting base.

[0020] In some embodiments, the tail portion of the handle housing includes an end cap that removably closes the receiving cavity.

[0021] In some embodiments, a sealing ring is fitted onto the amplitude transformer, and the sealing ring makes sealing contact with the inner wall of the amplitude transformer and the guide cavity.

[0022] Beneficial effects: By placing the larger and heavier transducer assembly at the rear of the handle, this design shifts the center of gravity of the osteotome rearward, facilitating operation. Furthermore, rearward transducer placement significantly reduces the radial dimension of the osteotome tip, minimizing obstruction of the surgical field of view during surgery and enhancing overall convenience. The integrated water system and camera system further enhance the instrument's overall performance. Attached Figure Description

[0023] Appendix Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model from one perspective;

[0024] Appendix Figure 2 This is an enlarged structural diagram of part A of this utility model;

[0025] Appendix Figure 3This is a three-dimensional schematic diagram of the overall structure of this utility model from another perspective;

[0026] Appendix Figure 4 This is an enlarged structural diagram of part B of this utility model;

[0027] Appendix Figure 5 This is a half-sectional schematic diagram of the overall structure of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Handle housing; 11. Tail rod section; 12. Handheld section; 13. Head rod section; 14. Receiving cavity; 15. Guide cavity; 2. Transducer; 3. Amplitude rod; 4. Working tip; 5. Water pipe; 51. Nozzle; 6. Embedding groove; 7. Mounting strip; 8. Camera assembly; 9. Mounting base; 10. End cap; 18. Cable hole; 19. Wiring harness; 20. Sealing ring. Detailed Implementation

[0030] 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.

[0031] An ultrasonic bone scalpel is a precision surgical instrument that uses high-frequency ultrasonic vibrations to cut and shape bone tissue. Traditional ultrasonic bone scalpels typically place the transducer (the component that generates the ultrasonic waves) at the front or middle of the handle. This layout results in a forward-positioned center of gravity, making surgeons prone to fatigue during prolonged surgeries and affecting operational stability and precision. Furthermore, the relatively large size of the front area of ​​the scalpel can easily obstruct the view of the contact area between the working tip and tissue during operation, posing a risk of accidental injury to surrounding important nerves and blood vessels. Therefore, there is an urgent need for a new type of ultrasonic bone scalpel that can improve the operating experience.

[0032] like Figures 1 to 5 As shown, this solution provides a transducer-rear-positioned ultrasonic bone scalpel, comprising:

[0033] The handle housing 1 includes a tail rod section 11, a hand grip section 12, and a head rod section 13 distributed sequentially along the length of the handle housing 1. The interior of the handle housing 1 includes a receiving cavity 14 and a guide cavity that are connected to each other.

[0034] Furthermore, the receiving cavity 14 is provided corresponding to the tail rod section 11, and the guide cavity 15 is provided corresponding to the handheld section 12;

[0035] Transducer 2 is disposed in the accommodating cavity 14, and the vibrating end of transducer 2 faces the guide cavity 15;

[0036] Amplitude rod 3 is guided and disposed in the guide cavity 15, with one end of the amplitude rod 3 connected to the vibration end of the transducer 2 and the other end facing the head of the handle housing 1.

[0037] The working tip 4 is used to connect to the end of the amplitude rod 3 that is away from the transducer 2.

[0038] By placing the transducer 2, which has the largest size and heaviest component, within the receiving cavity 14 at the far end of the handle, the overall center of gravity of the device is essentially shifted rearward towards the surgeon's grip. This reduces the weight of the bone scalpel's tip, making it easier to operate and more stable, significantly alleviating fatigue during prolonged surgeries. The amplitude transformer 3 is precisely guided within the guide cavity 15 of the handpiece 12 and rigidly connected to the vibrating end of the transducer 2, forming a continuous vibration system from the tail to the head. The transducer 2 converts high-frequency electrical energy into mechanical vibration, which is transmitted to the working tip 4 at the end via the amplitude transformer 3, generating micro-amplitude high-frequency vibrations sufficient for cutting and grinding bone tissue. The most important advantage of this design is that the rear-positioned transducer greatly reduces the radial dimension of the bone scalpel's tip, minimizing obstruction of the surgical field during surgery and enhancing convenience.

[0039] In some embodiments, the outer diameter of the handheld section 12 is smaller than the outer diameter of the tail rod section 11. Since the transducer 2 is located in the tail rod section 11, its radial dimension is relatively large. All areas located below the tail rod section 11 can have their outer diameter appropriately reduced, making it easier for the operator to hold the device stably and to control the working area more accurately.

[0040] In some embodiments, the outer diameter of the head section 13 is less than or equal to the outer diameter of the handheld section 12. The head section 13 is a non-grip area, and its outer diameter can be even smaller, thereby further reducing the tip size, minimizing instrument obstruction, and providing a wider field of vision during the procedure. For example, during dental procedures, a smaller tip size not only provides a wider field of vision but also avoids collisions between the instrument tip and the patient's surrounding teeth or lips, improving the patient's experience.

[0041] like Figure 1 , Figure 3 and Figure 5 As shown, in some embodiments, a water pipe 5 is provided on the outer wall of the handle housing 1 along the length direction. One end of the water pipe 5 is connected to a water source, and the other end faces the working tip 4 to discharge water. The water pipe 5 is arranged along the outer contour shape of the handle housing 1.

[0042] The water pipe 5 is physically integrated with the instrument body. The water pipe 5 is laid out along the outer shell contour, and its path planning is consistent with the shape of the handle, achieving integration of the accessory and the main body. This solves the problems of traditional external water pipes being easily tangled, dragged, and interfering with surgical operations. The integrated layout makes pipe management simple and reliable, allowing the surgeon to focus more on the surgery itself without having to worry about managing the water pipes. Continuous water flow towards the working tip 4 effectively reduces frictional heat generated by ultrasonic vibration, preventing thermal necrosis of bone tissue, while simultaneously rinsing the surgical field, removing bone debris, and maintaining a clear surgical view.

[0043] In some embodiments, a recessed groove 6 is provided on the outer wall of the handle housing 1, and the water pipe 5 is detachably disposed in the recessed groove 6. Disposing the water pipe 5 within the recessed groove can stably fix the water pipe, reduce protrusion, and prevent accidental pressing of the water pipe during operation, thus avoiding affecting the water flow.

[0044] In some embodiments, the recessed groove 6 is recessed into the outer wall of the handle housing 1. This concealed design makes the overall structure of the bone knife instrument more regular and improves the handling experience.

[0045] In some embodiments, a protruding mounting strip 7 is provided on the outer wall of the handle housing 1, and the fitting groove 6 is recessed in the mounting strip 7. By adding an additional mounting strip 7 and then forming the fitting groove 6 on the mounting strip 7, the processing and manufacturing of the handle housing is facilitated.

[0046] like Figures 1 to 5 As shown, in the area corresponding to the front rod end 13, a nozzle 51 is also provided at the outlet end of the water pipe 5, so as to facilitate the replacement of different nozzles to change the amount and direction of liquid output, thereby improving convenience.

[0047] like Figures 1 to 5 As shown, in some embodiments, a camera assembly 8 is also included, which is disposed on the head rod section 13 and faces the head of the working tip 4 to capture images for visual assistance during operation.

[0048] The miniature camera component 8 is directly integrated into the headband section 13 near the working tip 4, enabling it to capture real-time high-definition images of the working area at extremely close range. This allows for more accurate acquisition of the intraoperative field of view, especially when dentists are working on the inner surfaces of teeth, eliminating the need to use a reflector and greatly improving convenience.

[0049] like Figure 4 and Figure 5 As shown, in some embodiments, the camera assembly 8 includes a wiring harness 19, and a through hole 18 is provided on the wall of the head rod segment 13 for the wiring harness 19 to pass into the inner cavity of the handle housing 1.

[0050] Image signals are transmitted through wire harness 19, and the design of wire hole 18 allows the wire harness to be inserted into the instrument nearby, realizing the internal integration of the circuit. It also avoids the wire harness being exposed. Sealant is applied at wire hole 18 to waterproof the instrument and prevent water from entering the instrument.

[0051] In some embodiments, a mounting base 9 is provided on the head rod section 13 corresponding to the camera assembly 8, and the camera assembly 8 is detachably mounted on the mounting base 9.

[0052] In some embodiments, the tail of the handle housing 1 includes an end cap 10, which detachably closes the receiving cavity 14. The handle housing 1 is a one-piece design from front to rear. Since the receiving cavity 14 has the largest radial dimension, the internal structure can be installed and disassembled from the receiving cavity 14, reducing splicing and improving the overall integrity of the device. During installation or maintenance, the corresponding operation can be performed simply by opening the end cap 10, which is very convenient.

[0053] In some embodiments, a sealing ring 20 is fitted onto the amplitude transformer 3, and the sealing ring 20 makes sealing contact with the inner wall of the amplitude transformer 3 and the guide cavity 15. During rinsing and cutting, the sealing ring 20 effectively prevents contaminants such as blood, rinsing fluid, and bone fragments from seeping back along the amplitude transformer 3 into the rear receiving cavity 14, thereby protecting the delicate transducer 2 from liquid corrosion and short-circuit risks.

[0054] like Figures 1 to 5 As shown, an ultrasonic bone scalpel with a rear-mounted transducer includes a handle housing 1, a transducer 2, an amplitude transformer 3, and a working tip 4.

[0055] The handle housing 1 serves as the main structure, and along its length, it is sequentially divided into a tail rod section 11, a handheld section 12, and a head rod section 13. Internally, it has a connected accommodating cavity 14 and a guide cavity 15. The accommodating cavity 14 corresponds to the tail rod section 11 and is used to house the transducer 2; the guide cavity 15 corresponds to the handheld section 12 and is used to guide and support the amplitude transformer 3. This partitioned design results in a more rational weight distribution. The head rod section 13 is used to mount the working tip.

[0056] The transducer 2 is fixedly installed inside the accommodating cavity 14, with its vibrating end facing the forward-facing guide cavity 15. One end of the amplitude transformer 3 is connected to the vibrating end of the transducer 2, and the other end faces the end of the head rod section 13. The amplitude transformer 3 is guided within the guide cavity 15 to ensure the stability of its vibration axis. The working tip 4 is detachably connected to the front end of the amplitude transformer 3 via a threaded connection or quick-connect structure, and is used to perform surgical operations such as cutting.

[0057] To optimize the handheld experience, the outer diameter of the handheld section 12 is designed to be smaller than that of the tail section 11, forming a narrow waist that facilitates gripping. The outer diameter of the head section 13 is smaller than or equal to that of the handheld section 12. This streamlined design helps reduce obstruction of the surgical field and provides space for installing other accessories such as camera components.

[0058] Regarding the cooling water system, a water pipe 5 is laid along the length of the outer wall of the handle housing 1. One end of the water pipe 5 is connected to an external water source, and the outlet of the other end faces the working tip 4, used for cooling and rinsing the surgical field during surgery. The layout of the water pipe 5 conforms to the outer contour of the handle housing 1, avoiding any obtrusiveness. To further optimize integration, an inlay groove 6 can be provided on the outer wall of the handle housing 1, in which the water pipe 5 can be detachably inlayed, resulting in a cleaner appearance and preventing the water pipe from tangling. The inlay groove 6 can be directly recessed into the outer wall, or it can be set on a protruding mounting strip 7, with a groove cut into the mounting strip 7, which provides design flexibility.

[0059] To further enhance surgical visibility, a camera assembly 8 is installed on the head section 13. The camera assembly 8 is fixed by a mounting base 9, with its lens facing the head of the working tip 4 for real-time image acquisition of the operating area. The wiring harness 19 included in the camera assembly 8 passes through a through-hole 18 in the wall of the head section 13 into the inner cavity of the handle housing 1, and finally exits from the tail end to connect to an external display device. This internal wiring method avoids the problem of messy cables on the outside.

[0060] The tail of the handle housing 1 is sealed to the receiving cavity 14 by a removable end cap 10, which facilitates the installation, maintenance or replacement of the transducer 2. A sealing ring 20 is fitted on the amplitude rod 3. The sealing ring 20 is located between the amplitude rod 3 and the inner wall of the guide cavity 15, which plays a sealing role to prevent cooling water or tissue fluid from flowing back to the transducer 2 in the receiving cavity 14, thus protecting the core electronic components.

[0061] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0062] The above steps are provided only to help understand the method, structure, and core ideas of this application. Those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims.

Claims

1. An ultrasonic bone scalpel with a rear-mounted transducer, characterized in that, include: The handle housing (1) includes a tail rod section (11), a handheld section (12) and a head rod section (13) distributed sequentially along the length of the handle housing (1). The interior of the handle housing (1) includes a receiving cavity (14) and a guide cavity (15) that are connected together. Furthermore, the receiving cavity (14) is provided corresponding to the tail rod section (11), and the guide cavity (15) is provided corresponding to the handheld section (12); A transducer (2) is disposed in the accommodating cavity (14), and the vibrating end of the transducer (2) faces the guide cavity (15). Amplitude rod (3) is guided in the guide cavity (15), and one end of the amplitude rod (3) is connected to the vibration end of the transducer (2), and the other end is set towards the head of the handle housing (1); The working tip (4) is used to connect to the end of the amplitude rod (3) away from the transducer (2).

2. The ultrasonic bone scalpel with a rear-mounted transducer according to claim 1, characterized in that, The outer diameter of the handheld section (12) is smaller than the outer diameter of the tail rod section (11); And / or, the outer diameter of the head section (13) is less than or equal to the outer diameter of the handpiece section (12).

3. The ultrasonic bone scalpel with a rear-mounted transducer according to claim 1, characterized in that, A water pipe (5) is provided on the outer wall of the handle housing (1) along the length direction. One end of the water pipe (5) is connected to a water source, and the other end is directed toward the working tip (4) to discharge water. The water pipe (5) is arranged along the outer contour shape of the handle housing (1).

4. The ultrasonic bone scalpel with a rear-mounted transducer according to claim 3, characterized in that, The outer wall of the handle housing (1) is provided with an inlay groove (6), and the water pipe (5) is detachably disposed in the inlay groove (6).

5. The ultrasonic bone scalpel with a rear-mounted transducer according to claim 4, characterized in that, The mounting groove (6) is recessed on the outer wall of the handle housing (1); Alternatively, a protruding mounting strip (7) is provided on the outer wall of the handle housing (1), and the mounting groove (6) is recessed on the mounting strip (7).

6. The ultrasonic bone scalpel with a rear-mounted transducer according to claim 1, characterized in that, It also includes a camera assembly (8), which is mounted on the head section (13) and faces the head of the working tip (4) to capture images for visual assistance during operation.

7. The ultrasonic bone scalpel with a rear-mounted transducer according to claim 6, characterized in that, The camera assembly (8) includes a wire harness (19), and a through hole (18) is provided on the wall of the head rod section (13) for the wire harness (19) to pass through into the inner cavity of the handle housing (1).

8. The ultrasonic bone scalpel with a rear-mounted transducer according to claim 6, characterized in that, The head section (13) is provided with a mounting base (9) corresponding to the camera assembly (8), and the camera assembly (8) is detachably mounted on the mounting base (9).

9. The ultrasonic bone scalpel with a rear-mounted transducer according to claim 1, characterized in that, The tail of the handle housing (1) includes an end cap (10) that detachably closes the receiving cavity (14).

10. The ultrasonic bone scalpel with a rear-mounted transducer according to claim 1, characterized in that, A sealing ring (20) is fitted on the amplitude rod (3), and the sealing ring (20) is in sealing contact with the inner wall of the amplitude rod (3) and the guide cavity (15).

Images