Medical power handle and surgical power device
By incorporating elastic elements between the structural components of the power handle, which allow for indirect counteracting during assembly through elastic deformation, the problems of high-precision machining costs and axial movement are solved, resulting in cost reduction and improved device stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING XISHAN SCI & TECH
- Filing Date
- 2025-05-30
- Publication Date
- 2026-04-28
AI Technical Summary
In the existing technology, the structural components of the power handle require high machining precision, which increases the cost, and axial movement is prone to occur after assembly, affecting the use of the surgical power device.
An elastic element is placed between the second step surface and the first end surface, so that the second step surface and the first end surface indirectly abut against each other through the deformation of the elastic element, thus avoiding axial movement.
This reduces the processing cost of the power handle and prevents axial movement caused by precision issues after assembly, ensuring the normal use of the surgical power unit.
Smart Images
Figure CN224166377U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical device technology, and in particular relates to medical power handles and surgical power devices. Background Technology
[0002] Surgical power devices are often used in some minimally invasive surgeries to manipulate bone or soft tissue. A surgical power device consists of a blade and a power handle. The blade is mounted on the power handle and connected to it. The power handle provides power to drive the blade to perform actions such as rotation and oscillation to act on the tissue and perform the surgical procedure.
[0003] The power handle in this technology is composed of multiple structural components. To ensure a compact structure, at least two pairs of stepped surfaces are used to directly abut between adjacent components. This places extremely high demands on the machining accuracy of each component, especially the positional accuracy and surface roughness of the stepped surfaces, resulting in high manufacturing costs. If the accuracy requirements of each component are reduced, some parts of the handle may experience axial movement after assembly, affecting the use of the surgical power device. Utility Model Content
[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a medical power handle and a surgical power device to solve the problem that the power handle is prone to axial movement after assembly in the prior art.
[0005] To achieve the above and other related objectives, the technical solution of this utility model is as follows:
[0006] A medical powered handpiece, comprising:
[0007] A first handle assembly, the first handle assembly being provided with a first stepped surface and a first end surface;
[0008] The second handle assembly is detachably connected to the axial front end of the first handle assembly. The second handle assembly has a second end face that abuts against the first step surface and a second step surface facing the first end face.
[0009] An elastic element is disposed between the second step surface and the first end surface, and the elastic element deforms to cause the second step surface to abut against the first end surface indirectly.
[0010] Optionally, the second handle assembly includes a handle body and a limiting member detachably connected within the handle body. The second stepped surface is an inner stepped surface within the handle body. The limiting member is disposed between the second stepped surface and the first end face. The elastic member is disposed between the second stepped surface and the limiting member, so that the limiting member abuts against the first end face.
[0011] Optionally, the elastic element is an annular sealing ring, and the cross-sectional diameter of the sealing ring is greater than the axial gap between the second stepped surface and the limiting element.
[0012] Optionally, the limiting member is threadedly connected to the handle body.
[0013] Optionally, the handle body includes a positioning sleeve and a fixing sleeve, the fixing sleeve is placed outside the positioning sleeve, the limiting member is sleeved between the fixing sleeve and the positioning sleeve, and the limiting member is detachably connected to the positioning sleeve.
[0014] Optionally, both the second end face and the second stepped face are located on the fixing sleeve, which is used to detachably connect the second handle assembly and the first handle assembly.
[0015] Optionally, the rear end of the retaining sleeve is threadedly connected to the front end of the first handle assembly, so that the first handle assembly and the second handle assembly are detachably connected.
[0016] Optionally, the front end of the first handle assembly is inserted into the fixing sleeve, the outer wall of the front end of the first handle assembly is provided with external threads, the front end of the first handle assembly is threadedly connected to the rear end of the fixing sleeve, the first end face is the front end face of the first handle assembly, and the first stepped surface is the outer stepped surface formed on the first handle assembly.
[0017] Optionally, the limiting member is a limiting sleeve, and the end face of the limiting member is provided with at least one pair of grooves, with each pair of grooves distributed on both sides of the axial plane of the limiting member.
[0018] Accordingly, this utility model also provides a surgical power device, comprising: the medical power handle described in any of the above claims and a cutting tool adapted to the medical power handle.
[0019] In this invention, the medical power handle, during assembly of the first and second handle assemblies, has a first stepped surface and a second end face directly abutting. Because the elastic element can undergo elastic deformation, the deformation of the elastic element can be adjusted to allow the second stepped surface and the first end face to abut indirectly, preventing axial movement due to precision issues after assembly and thus avoiding interference with the use of the powered surgical device. Compared to existing technologies, this solution, due to the inclusion of this elastic element, eliminates the need for precisely aligned assembly of the power handle components, significantly reducing manufacturing costs and preventing axial movement after low-precision assembly. Attached Figure Description
[0020] Figure 1This is an exploded view of the structure of an exemplary medical power handle of the present invention;
[0021] Figure 2 This is a cross-sectional view of an exemplary medical power handle of the present invention;
[0022] Figure 3 This is a schematic diagram of the structure of a limiting member in an exemplary medical power handle of the present invention;
[0023] Figure 4 This is a cross-sectional view of the structure of the first handle assembly in an exemplary medical power handle of the present invention;
[0024] Figure 5 This is a partial structural cross-sectional view of the second handle assembly in an exemplary medical power handle of the present invention.
[0025] The reference numerals in the embodiments include:
[0026] First handle assembly 10, first end face 11, first stepped surface 12, second handle assembly 20, limiting member 21, groove 211, fixing sleeve 22, second end face 23, second stepped surface 24, positioning sleeve 25, elastic member 30. Detailed Implementation
[0027] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.
[0028] It should be understood that this invention can be embodied in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of this invention to those skilled in the art. In the accompanying drawings, the same reference numerals denote the same components throughout.
[0029] In this invention, the medical power handle is part of the surgical power device and is adapted to be used with the surgical blade. This allows the doctor to hold the medical power handle and use the blade to perform surgery on the patient. The medical power handle can be any of the medical power handles described in the following embodiments.
[0030] The specific structure of the power handle for traditional Chinese medicine of this utility model is described in conjunction with [reference]. Figures 1 to 5 The medical power handle includes:
[0031] A first handle assembly 10 is provided with a first stepped surface 12 and a first end surface 11;
[0032] The second handle assembly 20 is detachably connected to the axial front end of the first handle assembly 10. The second handle assembly 20 has a second end face 23 that abuts against the first step surface 12 and a second step surface 24 facing the first end face 11.
[0033] An elastic element 30 is disposed between the second step surface 24 and the first end surface 11. The elastic element 30 deforms to cause the second step surface 24 and the first end surface 11 to indirectly abut against each other.
[0034] In the working state, the end into which the cutting tool is inserted is the front end of the medical power handle, and the end held by the doctor is the rear end. Based on this, for each component structure on the medical power handle, its front end is the end into which the cutting tool is inserted, and its rear end is the end held by the doctor. For example, the front end of the first handle assembly 10 is the end into which the cutting tool is inserted in the medical power handle.
[0035] In this embodiment, the first handle assembly 10 and the second handle assembly 20 are combined to form a medical powered handle. The first handle assembly 10 is... Figure 1 , Figure 2 The middle right part and Figure 5 As shown, a motor is installed inside the first handle assembly 10 to provide rotational power for the cutting tool; Figure 2 The left part is the second handle assembly 20. Figure 1 The six structural components on the left side of the middle section are combined to form the second handle assembly 20, and Figure 4 This is shown as the second handle assembly 20, which houses a cutting tool and connects the tool to a motor inside the first handle assembly 10.
[0036] In actual implementation, the assembly between the first handle assembly 10 and the second handle assembly 20 adopts a method of direct abutment of two pairs of stepped surfaces, namely, the first stepped surface 12 abuts against the second end face 23, and the second stepped surface 24 abuts against the first end face 11, thus achieving a fixed assembly of the first handle assembly 10 and the second handle assembly 20. In this solution, the second stepped surface 24 and the first end face 11 are abutted together by an elastic element 30. Since the elastic element 30 can undergo elastic deformation, the deformation of the elastic element 30 can be adjusted so that the second stepped surface 24 and the first end face 11 can abut indirectly, avoiding axial movement due to precision issues after the power handle is assembled, which would affect the use of the power surgical device.
[0037] In some embodiments, the second handle assembly 20 includes a handle body and a limiting member 21 detachably connected within the handle body. The second stepped surface 24 is an inner stepped surface within the handle body. The limiting member 21 is disposed between the second stepped surface 24 and the first end face 11. The elastic member 30 is disposed between the second stepped surface 24 and the limiting member 21, so that the limiting member 21 abuts against the first end face 11. For example, Figure 2 and Figure 4 As shown, in order to make the first handle assembly 10 and the second handle assembly 20 more compact, the second step surface 24 is designed as an inner step surface. A limiting member 21 is designed between the second step surface 24 and the first end face 11 so that when the distance between the first end face 11 and the second step surface 24 is large, the first end face 11 indirectly abuts against the second step surface 24 through the limiting member 21 and the elastic member 30, thereby making the function of the elastic member 30 more stable.
[0038] In some embodiments, the elastic element 30 is an annular sealing ring, and the cross-sectional diameter of the sealing ring is larger than the axial gap between the second stepped surface 24 and the limiting element 21. For example, Figure 2 As shown, the annular sealing ring has a simple structure, is easy to manufacture, and can be directly purchased, making it a low-cost option for use as the limiting component 21 in this design. To ensure better performance of the sealing ring, its cross-sectional diameter is designed to be larger than the axial clearance between the second step surface 24 and the limiting component 21.
[0039] In some embodiments, the limiting member 21 is threadedly connected to the handle body. For example, Figure 2 and Figure 4 As shown, this facilitates the insertion of the elastic element 30 and the assembly / disassembly of the limiting element 21. During assembly, the axial position of the limiting element 21 is adjusted according to the machining dimensions of the first step surface 12 and the first end surface 11 on the first handle assembly 10 and the second step surface 24 and the second end surface 23 on the second handle assembly 20. During this process, the elastic element 30 will adaptively undergo elastic reversal, so that while the first step surface 12 and the second end surface 23 directly abut against each other, the second step surface 24 and the first end surface 11 can also indirectly abut against each other through the limiting element 21 and the elastic element 30.
[0040] In some embodiments, the handle body includes a positioning sleeve 25 and a fixing sleeve 22. The fixing sleeve 22 is fitted outside the positioning sleeve 25, and the limiting member 21 is fitted between the fixing sleeve 22 and the positioning sleeve 25. The limiting member 21 is detachably connected to the positioning sleeve 25. See also... Figure 2 and Figure 4The detachable connection between the limiting member 21 and the handle body essentially refers to the detachable connection between the limiting member 21 and the positioning sleeve 25. Of course, in actual implementation, it is not ruled out that the limiting member 21 and the positioning sleeve 25 can be detachably connected.
[0041] Figure 2 and Figure 4 As shown, the positioning sleeve 25 is also used for axially installing various components of the first handle assembly 10, such as balls, locking sleeves, pins, springs, identification coils, etc. The fixing sleeve 22 is used to fit and fix the various components of the first handle assembly 10. The limiting member 21 is fitted on the positioning sleeve 25 and is inside the fixing sleeve 22, and is detachably connected to the positioning sleeve 25 to facilitate the assembly of the various components on the positioning sleeve 25.
[0042] In some embodiments, both the second end face 23 and the second stepped surface 24 are located on the retaining sleeve 22, which allows the second handle assembly 20 and the first handle assembly 10 to be detachably connected. For example, Figure 2 and Figure 4 As shown, the fixed sleeve 22 is a structural component that is fixedly connected to the first handle assembly 10. It is more reasonable to set the second end face 23 and the second step face 24 on the fixed sleeve 22.
[0043] In some embodiments, the rear end of the retaining sleeve 22 is threadedly connected to the front end of the first handle assembly 10, so that the first handle assembly 10 and the second handle assembly 20 are detachably connected. For example, Figure 2 and Figure 4 As shown, the first handle assembly 10 and the second handle assembly 20 are detachably connected via a threaded connection, making the medical power handle easy to install and remove. Of course, in actual implementation, the first handle assembly 10 and the second handle assembly 20 can also be connected by a snap-fit method.
[0044] In some embodiments, the front end of the first handle assembly 10 is inserted into the fixing sleeve 22, the outer wall of the front end of the first handle assembly 10 is provided with external threads, the front end of the first handle assembly 10 is threadedly connected to the rear end of the fixing sleeve 22, the first end face 11 is the front end face of the first handle assembly 10, and the first stepped surface 12 is an outer stepped surface formed on the first handle assembly 10. For example, Figure 2 and Figure 4 As shown, the external thread design on the first handle assembly 10 facilitates the connection of the fixing sleeve 22 to the first handle assembly 10.
[0045] In some embodiments, the limiting member 21 is a limiting sleeve, and the end face of the limiting member 21 is provided with at least one pair of grooves 211, with each pair of grooves 211 distributed on both sides of the axial plane of the limiting member 21. For example, Figure 3As shown, the limiting sleeve is connected to the positioning sleeve 25 by a thread. The limiting sleeve has an internal thread, and the groove 211 is a relief groove, which facilitates the machining of the internal thread of the limiting sleeve.
[0046] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A medical powered handpiece, characterized in that, include: A first handle assembly, the first handle assembly being provided with a first stepped surface and a first end surface; The second handle assembly is detachably connected to the axial front end of the first handle assembly. The second handle assembly has a second end face that abuts against the first step surface and a second step surface facing the first end face. An elastic element is disposed between the second step surface and the first end surface, and the elastic element deforms to indirectly abut against the second step surface and the first end surface.
2. The medical power handle according to claim 1, characterized in that, The second handle assembly includes a handle body and a limiting member detachably connected within the handle body. The second stepped surface is an inner stepped surface within the handle body. The limiting member is disposed between the second stepped surface and the first end face. The elastic member is disposed between the second stepped surface and the limiting member so that the limiting member abuts against the first end face.
3. The medical power handpiece according to claim 2, characterized in that: The elastic element is an annular sealing ring, and the cross-sectional diameter of the sealing ring is greater than the axial gap between the second stepped surface and the limiting element.
4. The medical power handle according to claim 2, characterized in that: The limiting member is threadedly connected to the handle body.
5. The medical power handpiece according to claim 2, characterized in that: The handle body includes a positioning sleeve and a fixing sleeve. The fixing sleeve is placed outside the positioning sleeve, and the limiting member is sleeved between the fixing sleeve and the positioning sleeve. The limiting member and the positioning sleeve are detachably connected.
6. The medical power handpiece according to claim 5, characterized in that: Both the second end face and the second stepped face are located on the fixing sleeve, which is used to detachably connect the second handle assembly and the first handle assembly.
7. The medical power handpiece according to claim 6, characterized in that: The rear end of the retaining sleeve is threadedly connected to the front end of the first handle assembly, so that the first handle assembly and the second handle assembly can be detachably connected.
8. The medical power handle according to claim 7, characterized in that: The front end of the first handle assembly is inserted into the fixed sleeve. The outer wall of the front end of the first handle assembly is provided with an external thread. The front end of the first handle assembly is threadedly connected to the rear end of the fixed sleeve. The first end face is the front end face of the first handle assembly. The first stepped surface is the outer stepped surface formed on the first handle assembly.
9. The medical power handle according to any one of claims 5 to 8, characterized in that, The limiting member is a limiting sleeve, and the end face of the limiting member is provided with at least one pair of grooves, with each pair of grooves distributed on both sides of the axial plane of the limiting member.
10. A surgical power device, characterized in that, It includes a medical power handle as described in any one of claims 1-9 and a cutting tool adapted to the medical power handle.