Wave spring assembly and ultrasonic knife
By setting an interference fit between the stress relief ring and the fixed ring, the problem of the spring assembly damaging the cutter body under excessive thrust is solved, thus protecting the cutter body.
Patent Information
- Application Number
- CN202423054840.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing ultrasonic scalpels may experience excessive jaw closing force when the spring assembly is subjected to excessive thrust, which could damage the scalpel body.
By setting an interference fit between the stress relief ring and the fixed ring, it is ensured that the stress relief ring slides relative to the fixed ring when subjected to excessive thrust, thus preventing excessive thrust from being transmitted to the moving end of the tool holder assembly and protecting the tool body.
It effectively protects the blade body, prevents excessive jaw closing force, and avoids damage to the blade body caused by excessive thrust.
Smart Images
Figure CN223831154U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of ultrasonic scalpel technology, and particularly relates to a wave spring assembly and an ultrasonic scalpel. Background Technology
[0002] An ultrasonic scalpel is a high-frequency electrosurgical device mainly used for cutting biological tissues and closing blood vessels. Existing ultrasonic scalpels typically include a shell, a scalpel assembly, a trigger assembly, and a spring assembly. The scalpel assembly, from the inside out, includes the scalpel body, a trigger sleeve, and a mounting sleeve. The jaws are hinged to the mounting sleeve, with one end connected to the trigger sleeve. Opening / closing the jaws is achieved by sliding the trigger sleeve. The spring assembly connects to the trigger sleeve to adjust the preload of the jaws. The trigger assembly's fork connects to the spring assembly to drive it. However, excessive force on the spring assembly can lead to excessive jaw closure force, potentially damaging the scalpel body.
[0003] Therefore, how to prevent the blade body from being damaged when the wave spring assembly is subjected to excessive thrust is a technical problem that urgently needs to be solved in this field.
[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content
[0005] This disclosure provides at least one wave spring assembly and an ultrasonic scalpel.
[0006] In a first aspect, embodiments of this disclosure provide a wave spring assembly, comprising: a fixed ring sleeved on the outer wall of a tool holder assembly and engaged with the movable end of the tool holder assembly; a stress-relieving ring sleeved on the outer wall of the fixed ring, the stress-relieving ring being connected to a trigger assembly to drive the movable end of the tool holder assembly to move; and the stress-relieving ring and the fixed ring being interference-fitted to maintain a certain pressure on the inner wall of the stress-relieving ring and the outer wall of the fixed ring; and when the stress-relieving ring is subjected to excessive thrust, the stress-relieving ring and the fixed ring slide relative to each other to relieve the force.
[0007] In one alternative embodiment, the outer wall of the fixing ring is provided with an annular protrusion, which is interference-fitted with the inner wall of the stress relief ring.
[0008] In one optional embodiment, the fixing ring includes a mounting ring and an adjusting ring. The adjusting ring is sleeved on the outer wall of the mounting ring, and the annular protrusion is provided on the outer wall of the adjusting ring. The inner wall of the mounting ring is provided with a plurality of buckles to engage the movable end of the tool holder assembly.
[0009] In one alternative embodiment, the adjusting ring is threadedly connected to the mounting ring, and the end of the mounting ring is integrally provided with a protruding ring to limit the adjusting ring.
[0010] In one optional embodiment, the end of the adjusting ring is integrally provided with a convex ring as a reference point for the stress relief ring.
[0011] In an alternative embodiment, a push ring is further included, which is sleeved on the outer wall of the unloading ring, and the push ring is elastically connected to the unloading ring via a wave spring body.
[0012] In one alternative embodiment, a limit ring is provided on the outer wall of the unloading ring, and the push ring abuts against the limit ring when in a free state.
[0013] Secondly, this disclosure also provides an ultrasonic scalpel, comprising: a housing; a trigger assembly including a fork slidably disposed within the housing; a scissor assemblies mounted on the working end of the housing, the scissor assemblies including a slidably disposed trigger sleeve; and the aforementioned wave spring assembly mounted within the housing, the wave spring assembly further comprising a push ring sleeved on the outer wall of the unloading ring, the push ring being elastically connected to the unloading ring via a wave spring body, and the head of the fork encircling the push ring to drive the wave spring assembly to push the trigger sleeve to close the jaws.
[0014] In one optional embodiment, a limit ring is provided on the outer wall of the unloading ring, and the push ring abuts against the limit ring in the free state so that the unloading ring is driven to reset when the shift fork is reset.
[0015] The beneficial effect of this utility model is that the wave spring assembly and ultrasonic scalpel maintain a certain pressure between the unloading ring and the fixed ring through the interference fit between the unloading ring and the fixed ring. When the unloading ring is subjected to excessive thrust from the trigger assembly, it will slide relative to the fixed ring, ensuring that the moving end (i.e., the trigger sleeve) of the scalpel assembly will not pull the jaws too much, thus ensuring that the closing force of the jaws will not be too large.
[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description, claims, and drawings.
[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0019] Figure 1 A perspective view of an ultrasonic scalpel provided in an embodiment of this disclosure;
[0020] Figure 2 A cross-sectional view of an ultrasonic scalpel provided in an embodiment of this disclosure;
[0021] Figure 3 A cross-sectional view of a wave spring assembly provided in an embodiment of this disclosure;
[0022] Figure 4 This is a cross-sectional view of a wave spring assembly provided in an embodiment of this disclosure.
[0023] In the picture:
[0024] 1. Spring assembly;
[0025] 11. Fixed ring; 11a. Annular protrusion; 11b. Mounting ring; 11c. Adjusting ring; 11d. Buckle; 12. Unloading ring; 12a. Limiting ring; 13. Pushing ring; 14. Wave spring body;
[0026] 2. Outer shell;
[0027] 3. Trigger assembly; 31. Shift fork;
[0028] 4. Tool holder assembly; 41. Tool body; 42. Trigger sleeve; 43. Mounting sleeve; 44. Jaws. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0030] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.
[0031] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.
[0032] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.
[0033] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.
[0034] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.
[0035] Research has revealed that in existing technologies, excessive force applied by personnel when pressing the trigger assembly can damage the blade, which is the problem and objective of this utility model.
[0036] Based on the above research, this disclosure provides a wave spring assembly and an ultrasonic scalpel. Through the interference fit between the stress relief ring and the fixed ring, the stress relief ring slides with the fixed ring and relieves the force when subjected to excessive pressure, thus protecting the scalpel body.
[0037] The shortcomings of the above solutions are the result of the utility model inventor's practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the utility model inventor to this disclosure.
[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0039] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0040] See Figure 3-4 A spring assembly 1 is shown, comprising: a retaining ring 11, which is sleeved on the outer wall of a tool holder assembly 4 and engages with the movable end of the tool holder assembly 4; a stress-relieving ring 12, which is sleeved on the outer wall of the retaining ring 11, the stress-relieving ring 12 being connected to a trigger assembly 3 to drive the movable end of the tool holder assembly 4 to move; and the stress-relieving ring 12 and the retaining ring 11 being interference-fitted to maintain a certain pressure on the inner wall of the stress-relieving ring 12 and the outer wall of the retaining ring 11; and when the stress-relieving ring 12 is subjected to excessive pressure... When force is applied, the unloading ring 12 slides relative to the fixed ring 11 to unload the force. In short, through the interference fit between the unloading ring 12 and the fixed ring 11, a certain pressure is maintained between the unloading ring 12 and the fixed ring 11. When the unloading ring 12 is subjected to excessive thrust from the trigger assembly 3, it will slide relative to the fixed ring 11, ensuring that the moving end (i.e., the trigger sleeve 42) of the tool bar assembly 4 will not pull the jaws 44 too much, ensuring that the closing force of the jaws 44 will not be too large, and effectively protecting the tool body 41.
[0041] In some embodiments, Figure 3-4 The diagram shows that the outer wall of the fixed ring 11 is provided with an annular protrusion 11a, which is in an interference fit with the inner wall of the unloading ring 12. In short, by providing an annular protrusion on the outer wall of the fixed ring 11, the interference fit between the fixed ring 11 and the unloading ring 12 is achieved, and the unloading ring 12 drives the fixed ring 11 to work normally when subjected to normal pressure.
[0042] In some embodiments, Figure 3-4 The diagram shows that the fixing ring 11 includes a mounting ring 11b and an adjusting ring 11c. The adjusting ring 11c is sleeved on the outer wall of the mounting ring 11b, and the annular protrusion 11a is provided on the outer wall of the adjusting ring 11c. The inner wall of the mounting ring 11b is provided with a plurality of buckles 11d to engage the movable end of the tool holder assembly 4. In short, the mounting ring 11b is responsible for engaging the tool holder assembly 4, and the adjusting ring 11c is responsible for the slidable connection with the unloading ring 12.
[0043] In some embodiments, Figure 3-4 The diagram shows that the adjusting ring 11c is threadedly connected to the mounting ring 11b, and the end of the mounting ring 11b is integrally provided with a protruding ring to limit the adjusting ring 11c. In short, when it is necessary to change the sliding threshold of the unloading ring 12 and the adjusting ring 11c, it is only necessary to unscrew the adjusting ring 11c and replace it with an adjusting ring 11c of a different size with the annular protrusion 11a.
[0044] In some embodiments, Figure 3-4 The diagram shows that the end of the adjusting ring 11c is integrally provided with a convex ring as a reference point for the unloading ring 12; in short, by providing a convex ring at the end of the adjusting ring 11c, a reset reference point is provided for the unloading ring 12.
[0045] In some embodiments, the device further includes a push ring 13, which is sleeved on the outer wall of the unloading ring 12, and the push ring 13 is elastically connected to the unloading ring 12 through a wave spring body 14; in short, the push ring 13 is slidably disposed on the outer wall of the unloading ring 12, and is elastically connected to the unloading ring 12 through a wave spring body 14, and the push ring 13 is driven by the shift fork 31 to complete the driving of the unloading ring 12.
[0046] In some embodiments, Figure 3-4 The outer wall of the unloading ring 12 is provided with a limit ring 12a, and the push ring 13 abuts against the limit ring 12a when it is in a free state. In short, after the unloading ring 12 and the adjusting ring 11c slide to unload, when the shift fork 31 is reset in the reverse direction, it abuts against the limit ring 12a, thereby driving the unloading ring 12 to reset together.
[0047] Secondly, see Figure 1-4An ultrasonic scalpel is shown, comprising: a housing 2; a trigger assembly 3, including a fork 31 slidably disposed within the housing 2; a scalpel arm assembly 4, mounted on the working end of the housing 2, the scalpel arm assembly 4 including a slidably disposed trigger sleeve 42; and a spring assembly 1, mounted within the housing 2, the spring assembly 1 further including a push ring 13, which is sleeved on the outer wall of a relief ring 12, and the push ring 13 is elastically connected to the relief ring 12 via a spring body 14; the head of the fork 31 encircles the push ring 13 to drive the spring assembly 1 to push the trigger sleeve 42, thereby closing the jaws 44; in short, the push ring 13 driven by the fork 31 drives the trigger sleeve 42, thereby achieving the closure of the jaws 44.
[0048] In some embodiments, a limiting ring 12a is provided on the outer wall of the unloading ring 12, and the pushing ring 13 abuts against the limiting ring 12a when it is in a free state, so that the unloading ring 12 is reset when the shift fork 31 is reset; in short, the shift fork 31 abuts against the limiting ring 12a when it is reset, thereby driving the unloading ring 12 to reset.
[0049] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0050] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.
[0051] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.
[0052] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.
[0053] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A wave spring assembly (1), characterized in that, include: A retaining ring (11) is sleeved on the outer wall of the tool holder assembly (4) and fastened to the movable end of the tool holder assembly (4); A stress relief ring (12) is sleeved on the outer wall of the fixed ring (11), the stress relief ring (12) is connected to the trigger assembly (3) to drive the movable end of the tool bar assembly (4) to move; The pressure relief ring (12) and the fixed ring (11) are interference-fitted to maintain a certain pressure on the inner wall of the pressure relief ring (12) and the outer wall of the fixed ring (11); and When the unloading ring (12) is subjected to excessive thrust, the unloading ring (12) slides relative to the fixed ring (11) to unload the force.
2. The wave spring assembly (1) as described in claim 1, characterized in that, The outer wall of the fixed ring (11) is provided with an annular protrusion (11a), and the annular protrusion (11a) is interference-fitted with the inner wall of the unloading ring (12).
3. The wave spring assembly (1) as described in claim 2, characterized in that, The fixing ring (11) includes a mounting ring (11b) and an adjusting ring (11c). The adjusting ring (11c) is sleeved on the outer wall of the mounting ring (11b). The annular protrusion (11a) is provided on the outer wall of the adjusting ring (11c). The inner wall of the mounting ring (11b) is provided with a plurality of buckles (11d) to engage the movable end of the tool holder assembly (4).
4. The wave spring assembly (1) as described in claim 3, characterized in that, The adjusting ring (11c) is threadedly connected to the mounting ring (11b), and the end of the mounting ring (11b) is integrally provided with a protruding ring to limit the adjusting ring (11c).
5. The wave spring assembly (1) as described in claim 4, characterized in that, The end of the adjusting ring (11c) is integrally provided with a convex ring as the reference point of the unloading ring (12).
6. The wave spring assembly (1) as described in claim 5, characterized in that, It also includes a push ring (13), which is sleeved on the outer wall of the unloading ring (12), and the push ring (13) is elastically connected to the unloading ring (12) through a wave spring body (14).
7. The wave spring assembly (1) as described in claim 6, characterized in that, The outer wall of the unloading ring (12) is provided with a limiting ring (12a), and the pushing ring (13) abuts against the limiting ring (12a) when in a free state.
8. An ultrasonic scalpel, characterized in that, include: Outer shell (2); Trigger assembly (3), which includes a fork (31) slidably disposed within the housing (2); A tool holder assembly (4) is mounted on the working end of the housing (2), the tool holder assembly (4) including a slidably disposed trigger sleeve (42). The spring assembly (1) as described in any one of claims 1-5, which is installed within the housing (2), further comprising a push ring (13) sleeved on the outer wall of the relief ring (12), and the push ring (13) being elastically connected to the relief ring (12) via the spring body (14). The head of the shift fork (31) encircles the push ring (13) to drive the wave spring assembly (1) to push the trigger sleeve (42) to close the jaws (44).
9. The ultrasonic scalpel as described in claim 8, characterized in that, The outer wall of the unloading ring (12) is provided with a limit ring (12a). When the push ring (13) is in a free state, it abuts against the limit ring (12a) so that when the fork (31) is reset, it drives the unloading ring (12) to reset.