Press fitting tool for handle shell for ultrasonic knife
By designing a press-fit fixture for the handle housing of an ultrasonic scalpel, and adopting structures such as coaxial rings and pressure rings, the problem of ensuring the coaxiality of the transducer and the housing was solved, achieving stable fixation of the transducer and the housing, improving the performance of the handle and reducing production costs.
Patent Information
- Application Number
- CN202420513293.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-18
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2034-03-18
AI Technical Summary
In the prior art, it is difficult to ensure coaxiality between the transducer and the housing of the ultrasonic scalpel handle during the interference fit process, which affects the performance.
An ultrasonic scalpel handle housing press-fit fixture was designed, including a handle and a press. Through structures such as a coaxial ring, a pressure ring and a base, the coaxiality of the transducer and the housing is ensured during the press-fit process. The transducer is fixed by an interference fit method.
It effectively protects the gold plating layer of the electrode ring from damage, ensures good coaxiality of the transducer and housing after press-fitting, improves the performance of the handle and reduces costs.
Smart Images
Figure CN223961238U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device tooling and fixtures, and in particular to a tooling for pressing the handle shell of an ultrasonic scalpel. Background Technology
[0002] The ultrasonic scalpel has been widely used for more than 20 years. Compared with other surgical methods, its advantages are: less smoke, clear surgical field, less thermal damage, and the ability to cut, coagulate and separate tissues. It can also precisely control the cutting and coagulation range, eliminate the possibility of electrical damage, and the rapid oscillation has a self-cleaning effect, reducing the adhesion between the scalpel and the tissue.
[0003] The ultrasonic scalpel needs to be driven by a handle, which consists of a core component and related accessories. The core component is a piezoelectric ultrasonic transducer, which converts high-frequency electrical energy into high-frequency mechanical vibration energy. The transducer needs to be fixed by a housing to be used. The transducer is generally fixed by axial interference fitting of the housing. During the pressing process, how to ensure the coaxiality of the transducer and the housing directly affects the performance of the handle. To this end, we propose a pressing fixture for the housing of the ultrasonic scalpel handle. Utility Model Content
[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a press-fit fixture for the handle shell of an ultrasonic scalpel.
[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a pressing fixture for pressing the outer shell of an ultrasonic scalpel handle, including a handle and a press, wherein the handle includes:
[0006] Transducer, electrode ring, front shell, middle shell, rear shell;
[0007] The press includes: a power source and a table;
[0008] A base is fixed to the upper surface of the platform, and a front shell base is provided on the inner cylindrical surface of the base.
[0009] The front shell base has a concave cylindrical surface that matches the outer cylindrical surface of the front shell.
[0010] A coaxial ring is provided on one side of the front shell to ensure that the middle shell is pressed into the front shell, and a middle shell pressure ring is provided on one side of the middle shell.
[0011] In at least some embodiments, the front shell and the middle shell are interference-fitted, and the rear shell and the middle shell are interference-fitted.
[0012] In at least some embodiments, the coaxial ring includes:
[0013] The first inner cylindrical surface that mates with the outer cylindrical surface of the transducer;
[0014] A second inner cylindrical surface that mates with the outer cylindrical surface of the front shell;
[0015] The end face that abuts against the end face of the front shell.
[0016] In at least some embodiments, the middle shell compression ring comprises:
[0017] Pressure surface acting on the rear end face of the middle shell;
[0018] The first rectangular slot is used for signal line routing;
[0019] The second rectangular groove is used for visual observation of the pressure surface engagement.
[0020] In at least some embodiments, a rear shell pressure ring is provided on one side of the rear shell, and the rear shell pressure ring is a contour-following design to match the shape of the rear shell.
[0021] In at least some embodiments, the rear housing pressure ring is provided with a rear housing groove for avoiding the rear cable of the handle.
[0022] In at least some embodiments, the base is a hollow flange structure.
[0023] In at least some embodiments, a third rectangular groove is provided on the front housing base, and the third rectangular groove is distributed circumferentially along the outer surface of the front housing base, and a fourth rectangular groove is provided on the electrode ring pressure head.
[0024] This invention can effectively protect the gold plating layer on the surface of the electrode ring from damage, ensure the coaxiality of the transducer and the housing after press-fitting, is easy to use, and has low cost, laying the foundation for the successful development of the handle. Attached Figure Description
[0025] Figure 1 This is a diagram of the handle;
[0026] Figure 2 yes Figure 1 A cross-sectional view of the middle handle;
[0027] Figure 3 This is a schematic diagram of the transducer;
[0028] Figure 4 This is a schematic diagram of a press.
[0029] Figure 5 This is a schematic diagram of the electrode ring part being press-fitted;
[0030] Figure 6 yes Figure 5 Enlarged view of a portion of the image;
[0031] Figure 7 This is a schematic diagram of the base;
[0032] Figure 8 This is a schematic diagram of the front shell base;
[0033] Figure 9 This is a schematic diagram of the electrode ring pressure head;
[0034] Figure 10 This is a schematic diagram of the electrode ring;
[0035] Figure 11 This is a schematic diagram of the process of pressing the middle shell into the front shell;
[0036] Figure 12 This is a schematic diagram of a coaxial ring;
[0037] Figure 13 This is a schematic diagram of the front shell;
[0038] Figure 14 This is a schematic diagram of the middle shell pressure head;
[0039] Figure 15 This is a schematic diagram of the rear shell being press-fitted into the middle shell;
[0040] Figure 16 This is a schematic diagram of the rear housing pressure head.
[0041] The reference numerals in the attached figures are as follows:
[0042] 1. Handle;
[0043] 11. Transducer; 111. Flange; 112. Outer cylindrical surface;
[0044] 12. Electrode ring; 13. Front shell; 14. Middle shell; 15. Rear shell;
[0045] 121. Middle shell pressure ring; 1211. First rectangular groove; 1212. Second rectangular groove; 1213. Pressure surface;
[0046] 122. Coaxial ring; 1221. First inner cylindrical surface; 1222. Second inner cylindrical surface; 1223. End face;
[0047] 161. Rear housing pressure ring; 1611. Rear housing groove;
[0048] 4. Press machine; 41. Power source; 42. Table;
[0049] 51. Basic base; 52. Front shell base; 521. Third rectangular groove; 53. Electrode ring pressure head; 531. Fourth rectangular groove. Detailed Implementation
[0050] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.
[0051] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0052] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.
[0053] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” indicate that the element or object preceding “comprising” or “including” encompasses the element or object listed following “comprising” or “including” and its equivalents, and do not exclude other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0054] In this disclosure, the terms "proximal" refer to the side closer to the operator, "distal" refer to the side farther from the operator, and "multiple" refer to two or more.
[0055] like Figure 1 As shown, according to an embodiment of this disclosure, a press-fit fixture for an ultrasonic scalpel handle housing is provided, including a handle 1 and a press 4. The handle 1 includes a transducer 11, an electrode ring 12, a front housing 13, a middle housing 14, and a rear housing 15. The press 4 includes a power source 41 and a table 42. The transducer 11 is press-fitted and fixed at the flange 111 using accessories such as the housing. During the press-fitting process, the coaxiality of the transducer 11 and the handle 1 is ensured. Figure 4As shown, the press fitting uses a press 4 to provide pressure. The press 4 used can be a hydraulic press 4, a pneumatic press 4, etc.
[0056] For example, such as Figures 1 to 6 According to the embodiments of this disclosure, a base base 51 is fixed on the upper surface of the platform 42. A front shell base 52 is provided on the inner cylindrical surface of the base base 51. A concave cylindrical surface that mates with the outer cylindrical surface of the front shell 13 is provided inside the front shell base 52. A coaxial ring 122 is provided on one side of the front shell 13 to ensure that the middle shell 14 is pressed into the front shell 13. A middle shell pressure ring 121 is provided on one side of the middle shell 14. The electrode ring 12 is press-fitted into the front shell 13. The front shell 13 and the middle shell 14 are press-fitted together. The rear shell 15 and the middle shell 14 are also press-fitted together. Therefore, there is a press-fit joint S1 between the electrode ring 12 and the front shell 13, a press-fit joint S2 between the front shell 13 and the middle shell 14, and a joint S3 between the rear shell 15 and the middle shell 14. In order to ensure that the gold-plated surface is not damaged, the front shell base 52 and the electrode ring pressure head 53 are both made of engineering plastic material, such as PEEK.
[0057] like Figure 12 The diagram illustrates the pressing action of the middle shell 14 into the front shell 13, a crucial step in the press-fitting of the transducer 11. Therefore, a coaxial ring 122 is provided. The coaxial ring 122 includes: a first inner cylindrical surface 1221, which mates with the outer cylindrical surface 112 of the transducer 11; a second inner cylindrical surface 1222, which mates with the outer cylindrical surface of the front shell 13; and an end face 1223 that abuts against the end face 1223 of the front shell 13 to achieve axial positioning. Thus, during press-fitting, the first and second inner cylindrical surfaces 1221 and 1222 ensure the coaxiality of the transducer 11 and the outer shell. The middle shell pressing ring 121 includes: a pressure surface 1213 acting on the rear end face of the middle shell 14; a first rectangular groove 1211 for signal line routing; and a second rectangular groove 1212 for visually observing the engagement of the pressure surface 1213.
[0058] like Figure 16 A rear shell pressure ring 161 is provided on one side of the rear shell 15. The rear shell pressure ring 161 is designed to match the shape of the rear shell 15. The rear shell pressure ring 161 is provided with a rear shell groove 1611 for avoiding the rear cable of the handle 1.
[0059] like Figure 7 As shown, the base 51 has a hollow flange 111 structure, as... Figures 8-9 As shown, a third rectangular groove 521 is provided on the front housing base 52. The third rectangular groove 521 is used to pass wires and prevent signal wires from being damaged. The third rectangular groove 521 is distributed circumferentially along the outer surface of the front housing base 52. A fourth rectangular groove 531 is provided circumferentially on the electrode ring pressure head 53.
[0060] The following points should be noted in this article:
[0061] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.
[0062] (2) Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.
[0063] (3) The above description is merely an exemplary embodiment of this disclosure and is not intended to limit the scope of protection of this disclosure. The scope of protection of this disclosure is determined by the appended claims.
[0064] Apart from the technical features described in the specification, the other technical features are known to those skilled in the art. To highlight the innovative features of this utility model, the other technical features will not be described in detail here.
Claims
1. A pressure fitting fixture for an ultrasonic scalpel handle housing, comprising a handle (1) and a press (4), characterized in that, The handle (1) includes: Transducer (11), electrode ring (12), front shell (13), middle shell (14), rear shell (15). The press (4) includes: a power source (41) and a table (42); A base base (51) is fixed on the upper surface of the platform (42), and a front shell base (52) is provided on the inner cylindrical surface of the base base (51). The front shell base (52) has a cylindrical surface that matches the outer cylindrical surface (112) of the front shell (13) and is a concave structure. A coaxial ring (122) for pressing the middle shell (14) into the front shell (13) is provided on one side of the front shell (13), and a middle shell pressure ring (121) is provided on one side of the middle shell (14).
2. The ultrasonic scalpel handle housing press-fitting fixture according to claim 1, characterized in that, The front shell (13) and the middle shell (14) are fitted with interference fit, and the rear shell (15) and the middle shell (14) are fitted with interference fit.
3. The ultrasonic scalpel handle housing press-fitting fixture according to claim 1, characterized in that, The coaxial ring (122) includes: The first inner cylindrical surface (1221) mates with the outer cylindrical surface (112) of the transducer (11); The second inner cylindrical surface (1222) mates with the outer cylindrical surface of the front shell (13); The end face (1223) abuts against the end face (1223) of the front shell (13).
4. The ultrasonic scalpel handle housing press-fitting fixture according to claim 1, characterized in that, The middle shell pressure ring (121) includes: Pressure surface (1213) acting on the rear end face of the middle shell (14); The first rectangular slot (1211) is used for signal line passing processing. The second rectangular groove (1212) is used for visual observation of the engagement of the pressure surface (1213).
5. The ultrasonic scalpel handle housing press-fitting fixture according to claim 1, characterized in that, A rear shell pressure ring (161) is provided on one side of the rear shell (15), and the rear shell pressure ring (161) is a contour-following design to match the shape of the rear shell (15).
6. The ultrasonic scalpel handle housing press-fitting fixture according to claim 5, characterized in that, The rear housing pressure ring (161) is provided with a rear housing groove (1611) for avoiding the rear cable of the handle (1).
7. The ultrasonic scalpel handle housing press-fitting fixture according to claim 1, characterized in that, The base (51) is a hollow flange (111) structure.
8. The ultrasonic scalpel handle housing press-fitting fixture according to claim 1, characterized in that, The front shell base (52) is provided with a third rectangular groove (521), and the third rectangular groove (521) is distributed circumferentially along the outer surface of the front shell base (52). The electrode ring (12) is pressed into the front shell (13) through the electrode ring press head (53). The electrode ring press head (53) is provided with a fourth rectangular groove (531) distributed circumferentially.