surgical knife
By designing an adjustable-length scalpel handle, the problem of mismatched scalpel handle size during surgery was solved, thereby improving surgical safety and efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING ANZHEN HOSPITAL AFFILIATED TO CAPITAL MEDICAL UNIV
- Filing Date
- 2025-04-22
- Publication Date
- 2026-06-26
AI Technical Summary
The fixed size of existing scalpel handles necessitates changing the handle in different surgical fields, increasing surgical time and risks.
A scalpel has been designed, comprising a main handle and a secondary handle. The length of the handle can be adjusted by a telescopic component, and the secondary handle is driven to slide by a rack and pinion transmission system. Combined with a detachable blade and thickened components, it can meet different surgical needs.
It improves the safety and efficiency of surgery, reduces surgical time and cost, and simplifies the operation process.
Smart Images
Figure CN224403731U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical device technology, and more particularly to a surgical scalpel. Background Technology
[0002] Currently, the size of surgical scalpel handles used in clinical practice is standardized. Shorter handles can be used in situations with a clear and spacious surgical field. Longer handles are used for deeper incisions, such as small right axillary incisions for cardiac surgery in adults, or aortic incisions. However, sometimes due to insufficient instrument availability, the circulating nurse needs to search for handles of different sizes, increasing surgical time. If a short handle is used due to instrument shortage, it increases surgical risks, bringing additional complications and setbacks. Utility Model Content
[0003] To address the aforementioned technical problems, this application provides a surgical scalpel for improving surgical efficiency.
[0004] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:
[0005] This application provides a surgical scalpel, comprising: a handle, the handle including a main handle and a secondary handle, the main handle having a first receiving cavity with a first opening, the secondary handle slidably passing through the first opening, the secondary handle having a second receiving cavity with a second opening and a third opening on adjacent sides of the second receiving cavity, the second opening being directly opposite the first opening; a telescopic assembly, the telescopic assembly including a rack, a first gear, and a driving member, the rack being disposed in the second receiving cavity, the first gear being disposed in the first receiving cavity and passing through the third opening, the first gear being kinetically connected to the rack, the driving member being disposed on the main handle and used to drive the first gear to rotate; and a blade, the blade being disposed on the side of the main handle away from the secondary handle and detachably connected to the main handle.
[0006] According to the embodiments of this application, the scalpel has a secondary handle that slidably passes through a first opening, and a rack is provided in the second receiving cavity of the secondary handle. A first gear is provided in the first receiving cavity of the main handle. A driving member can drive the rotation of the first gear, thereby driving the secondary handle to move closer to or further away from the main handle. This allows the surgeon to adjust the handle length according to the surgical field during operation, facilitating operation, improving surgical safety, and saving time. Furthermore, the scalpel's simple structure helps reduce manufacturing costs.
[0007] In one possible implementation, the telescopic assembly further includes a rotating shaft, on which the first gear is sleeved, and guide holes are provided on opposite sides of the second receiving cavity, the guide holes extending along the length direction of the secondary tool holder, and the rotating shaft passing through the guide holes.
[0008] In one possible implementation, the scalpel further includes a shielding member comprising a plurality of sequentially connected shielding plates, the shielding member being slidably disposed at the third opening for covering the third opening.
[0009] In one possible implementation, the main shank is provided with a plurality of first locking members, and the secondary shank is provided with a plurality of second locking members, wherein the first locking members engage with the second locking members.
[0010] In one possible implementation, the first latching element is a latching slot, and the second latching element is a latching protrusion, with the latching slot engaging with the latching protrusion.
[0011] In one possible implementation, the drive element includes a second gear and a rotating element, the second gear meshing with the first gear and the rotating element being connected to the second gear.
[0012] In one possible implementation, the main shank is provided with a first movable hole, the first movable hole extending in the same direction as the extension direction of the main shank, and the second gear slidably passes through the first movable hole.
[0013] In one possible implementation, the scalpel further includes a thickening assembly comprising a first thickening member and a second thickening member, the first thickening member being movably connected to the main handle along the thickness direction of the main handle, and the second thickening member being slidably connected to the first thickening member along the extension direction of the first thickening member.
[0014] In one possible implementation, the thickened component further includes a first support member comprising a first connecting segment, a second connecting segment, and a third connecting segment connected in sequence. The first connecting segment is connected to the main handle. One end of the first support member is rotatably connected to the main handle, and the other end is used to support the second connecting segment. The third connecting segment is connected to the main handle.
[0015] In one possible implementation, the second thickened member is detachably connected to the secondary tool holder. Attached Figure Description
[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0017] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.
[0018] Figure 1 A schematic diagram of a surgical scalpel provided in some embodiments of this application;
[0019] Figure 2 Partial view of a scalpel provided for some embodiments of this application;
[0020] Figure 3 This is a partial schematic diagram of a surgical knife provided in some embodiments of this application.
[0021] Figure label:
[0022] 100. Scalpel;
[0023] 1. Tool holder; 11. Main tool holder; 111. First receiving cavity; 112. First opening; 12. Secondary tool holder; 121. Second receiving cavity; 122. Second opening; 123. Third opening; 124. Guide hole;
[0024] 2. Telescopic assembly; 21. Rack; 22. First gear; 23. Rotating shaft; 24. Second gear;
[0025] 3. Blade;
[0026] 4. Shielding component; 41. Shielding plate;
[0027] 5. Thickened component; 51. First thickened part; 511. First connecting section; 512. Second connecting section; 513. Third connecting section; 52. Second thickened part; 53. First support member. Detailed Implementation
[0028] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.
[0030] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after the connection. Furthermore, the directional terms mentioned in the embodiments of this application, such as "inner" and "outer," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.
[0031] In the description of embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements possessed by such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0032] Currently, the size of surgical scalpel handles used in clinical practice is standardized. Shorter handles can be used in situations with a clear and spacious surgical field. Longer handles are used for deeper incisions, such as small right axillary incisions for cardiac surgery in adults, or aortic incisions. However, sometimes due to insufficient instrument availability, the circulating nurse needs to search for handles of different sizes, increasing surgical time. If a short handle is used due to instrument shortage, it increases surgical risks, bringing additional complications and setbacks.
[0033] To address the aforementioned technical problems, this application provides a surgical scalpel.
[0034] Please see Figures 1-3 , Figure 1 This is a schematic diagram of a scalpel provided in some embodiments of this application. Figure 2 This is a partial view of a scalpel provided in some embodiments of this application. Figure 3 This is a partial schematic diagram of a scalpel provided in some embodiments of this application. The scalpel 100 includes a handle 1, a telescopic assembly 2, and a blade 3.
[0035] The knife handle 1 may include a main handle 11 and a secondary handle 12. The main handle 11 has a first receiving cavity 111, and the first receiving cavity 111 has a first opening 112. The secondary handle 12 slidably passes through the first opening 112. Specifically, the secondary handle 12 can extend into the first receiving cavity 111 through the first opening 112, or it can slide out of the first receiving cavity 111 through the first opening 112.
[0036] The secondary shank 12 may have a second receiving cavity 121, with a second opening 122 and a third opening 123 on adjacent sides of the second receiving cavity 121, the second opening 122 being directly opposite the first opening 112. Specifically, the second receiving cavity 121 may communicate with the first receiving cavity 111 through the second opening 122 and the third opening 123. The third opening 123 may be located on a portion of the secondary shank 12.
[0037] The telescopic assembly 2 may include a rack 21, a first gear 22, and a drive member. The rack 21 is disposed within the second receiving cavity 121, and the first gear 22 is disposed within the first receiving cavity 111, passing through a third opening 123. The first gear 22 is kinetically connected to the rack 21. The drive member is disposed on the main handle 11 and is used to drive the first gear 22 to rotate. Specifically, the rack 21 can be fixed within the second receiving cavity 121 by fasteners, adhesives, or other means, and the first gear 22 is rotatably disposed within the first receiving cavity 111. When the length of the scalpel 100 needs to be adjusted, the drive member can drive the first gear 22 to rotate, which in turn drives the rack 21 to move, thereby causing the secondary handle 12 to move away from the main handle 11, thus lengthening the scalpel 100. Alternatively, the drive member can drive the first gear 22 to rotate, causing the secondary handle 12 to move closer to the main handle 11.
[0038] The length of the third opening 123 and the length of the rack 21 can limit the movement length of the secondary handle 12.
[0039] The blade 3 is located on the side of the main handle 11 away from the secondary handle 12 and is detachably connected to the main handle 11. This facilitates the replacement of the blade 3, thereby reducing the operating cost of the scalpel 100.
[0040] According to the scalpel 100 provided in the embodiments of this application, by slidably passing the secondary handle 12 through the first opening 112 and providing a rack 21 in the second receiving cavity 121 of the secondary handle 12, and providing a first gear 22 in the first receiving cavity 111 of the main handle 11, the rotation of the first gear 22 can be driven by a driving member, thereby driving the secondary handle 12 to move closer to or further away from the main handle 11. This allows the surgeon to adjust the length of the handle 1 according to the surgical field during surgery, facilitating operation, improving surgical safety, and saving time. At the same time, the scalpel 100 has a simple structure, which helps to reduce the manufacturing cost of the scalpel 100.
[0041] Please continue reading. Figures 1-3 In some embodiments, the telescopic assembly 2 may further include a rotating shaft 23, with a first gear 22 sleeved on the rotating shaft 23. Guide holes 124 are provided on opposite sides of the second receiving cavity 121, extending along the length of the secondary handle 12. The rotating shaft 23 passes through the guide holes 124. This avoids interference between the first gear 22 and the secondary handle 12, thereby improving the reliability of the scalpel 100. Furthermore, the guide holes 124 act as guides, allowing the secondary handle 12 to slide better relative to the main handle 11, further enhancing the safety and reliability of the scalpel 100.
[0042] It should be noted that the third opening 123 may also extend towards the rack 21 to avoid interference between the side wall of the second receiving cavity 121 and the rotation of the first gear 22.
[0043] Please continue reading. Figures 1-3 In some embodiments, the scalpel 100 may further include a shielding member 4, which comprises a plurality of shielding plates 41 connected in sequence. The shielding member 4 is slidably disposed at the third opening 123 to cover the third opening 123. Specifically, when the shielding member 4 is not in use, the plurality of shielding plates 41 connected in sequence can be formed in a wavy shape. When the shielding member 4 is in use, the plurality of shielding plates 41 can be located in the same plane, thereby achieving coverage of the third opening 123. This configuration is simple and can improve the comfort of using the scalpel 100.
[0044] Please continue reading. Figures 1-3 In some embodiments, the main handle 11 is provided with multiple first locking members, and the secondary handle 12 is provided with multiple second locking members, with the first locking members engaging with the second locking members. Thus, through the engaging engagement between the first and second locking members, the secondary handle 12 can be fixed at the required length after sliding, resulting in a simple structure that helps reduce the difficulty of using the scalpel 100.
[0045] Please continue reading. Figures 1-3In some embodiments, the first locking element is a slot, and the second locking element is a protrusion, with the slot and protrusion engaging. Thus, through the engagement between the slot and protrusion, the secondary blade handle 12 can be fixed after sliding to a designated position. This simple structure helps reduce the manufacturing cost of the scalpel 100.
[0046] For example, the slot may be provided on the side wall of the first receiving cavity 111 facing the secondary tool holder 12, and the protrusion may be provided on the surface of the secondary tool holder 12 opposite to the slot.
[0047] For example, the secondary handle 12 may be provided with a scale, so that the doctor can adjust it to a specified length as needed.
[0048] Please continue reading. Figures 1-3 In some embodiments, the driving component may include a second gear 24 and a rotating component. The second gear 24 meshes with the first gear 22, and the rotating component is connected to the second gear 24. Specifically, the second gear 24 may be located within the first receiving cavity 111 and mesh with the first gear 22. The rotating component and the second gear 24 may be coaxially arranged, so the rotation of the second gear 24 can be controlled by the rotating component, thereby controlling the rotation of the first gear 22. This facilitates the doctor's control over the sliding of the secondary scalpel handle 12, thereby improving the comfort of using the scalpel 100.
[0049] Please continue reading. Figures 1-3 In some embodiments, the main handle 11 is provided with a first movable hole. The extension direction of the first movable hole is the same as the extension direction along the main handle 11, and the second gear 24 is slidably passed through the first movable hole. Thus, the second gear 24 can slide within the first movable hole, allowing the first gear 22 and the second gear 24 to disengage when the scalpel 100 does not need length adjustment, and the first gear 22 to engage with the second gear 24 when the scalpel 100 needs length adjustment, thereby improving the safety of using the scalpel 100.
[0050] Please continue reading. Figures 1-3 In some embodiments, the scalpel 100 may further include a thickening component 5. The thickening component 5 includes a first thickening member 51 and a second thickening member 52. The first thickening member 51 is movably connected to the main handle 11 along its thickness direction, and the second thickening member 52 is slidably connected to the first thickening member 51 along its extension direction. Thus, when the secondary handle 12 moves, the first thickening member 51 can be moved, and the second thickening member 52 can be moved away from the first thickening member 51, making the moving distance of the second thickening member 52 the same as the moving distance of the secondary handle 12. This allows for an overall change in the thickness of the scalpel 100, thereby improving the reliability of the scalpel 100 in use.
[0051] Please continue reading. Figures 1-3In some embodiments, the thickening component 5 may further include a first support member 53. The first thickening component 51 includes a first connecting segment 511, a second connecting segment 512, and a third connecting segment 513 connected in sequence. The first connecting segment 511 is connected to the main handle 11. One end of the first support member 53 is rotatably connected to the main handle 11, and the other end is used to support the second connecting segment 512. The third connecting segment 513 is connected to the main handle 11. Thus, the second connecting segment 512 can move along the thickness direction of the main handle 11, and after the second connecting segment 512 moves, the first thickening component 51 as a whole can be formed into a trapezoidal shape. By rotating the first support member 53, the first support member 53 can support the second connecting segment 512, thereby changing the thickness of the scalpel 100.
[0052] For example, a second support member may be provided on the side of the second thickening member 52 away from the first thickening member 51. One end of the second support member is rotatably connected to the second thickening member 52, and the other end can be used to abut against the secondary tool holder 12.
[0053] Please continue reading. Figures 1-3 In some embodiments, the second thickened member 52 is detachably connected to the secondary handle 12. The connection between the second thickened member 52 and the secondary handle 12 can be achieved through magnetic attraction, snap-fit, or other means. This allows for better fixation of the second thickened member 52, thereby improving the reliability of the scalpel 100 in use.
[0054] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.
[0055] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A scalpel, characterized in that, The surgical knife includes: The knife handle includes a main handle and a secondary handle. The main handle has a first receiving cavity with a first opening. The secondary handle slidably passes through the first opening. The secondary handle has a second receiving cavity with a second opening and a third opening on two adjacent sides. The second opening is directly opposite the first opening. The telescopic assembly includes a rack, a first gear, and a driving member. The rack is disposed in the second receiving cavity, the first gear is disposed in the first receiving cavity and passes through the third opening, the first gear is kinetically connected to the rack, and the driving member is disposed on the main tool holder and is used to drive the first gear to rotate. A blade is disposed on the side of the main shank away from the secondary shank and is detachably connected to the main shank.
2. The scalpel of claim 1, wherein, The telescopic assembly also includes a rotating shaft, the first gear is sleeved on the rotating shaft, and guide holes are provided on opposite sides of the second receiving cavity. The guide holes extend along the length direction of the secondary tool holder, and the rotating shaft passes through the guide holes.
3. The scalpel of claim 2, wherein, The scalpel also includes a shielding component, which comprises a plurality of shielding pieces connected in sequence. The shielding component is slidably disposed at the third opening to cover the third opening.
4. The scalpel of claim 1, wherein, The main handle is provided with a plurality of first locking components, and the secondary handle is provided with a plurality of second locking components, wherein the first locking components and the second locking components are engaged in a locking fit.
5. The scalpel of claim 4, wherein, The first snap-fit component is a snap-fit groove, and the second snap-fit component is a snap-fit protrusion, with the snap-fit groove and the snap-fit protrusion engaging with each other.
6. The scalpel of claim 1, wherein, The driving component includes a second gear and a rotating component, wherein the second gear meshes with the first gear and the rotating component is connected to the second gear.
7. The scalpel of claim 6, wherein, The main shank is provided with a first movable hole, the extension direction of the first movable hole is the same as the extension direction along the main shank, and the second gear is slidably passed through the first movable hole.
8. The scalpel of claim 1, wherein, The scalpel also includes a thickening component, which includes a first thickening member and a second thickening member. The first thickening member is movably connected to the main handle along the thickness direction of the main handle, and the second thickening member is slidably connected to the first thickening member along the extension direction of the first thickening member.
9. The scalpel of claim 8, wherein, The thickened component further includes a first support member, which includes a first connecting segment, a second connecting segment, and a third connecting segment connected in sequence. The first connecting segment is connected to the main handle. One end of the first support member is rotatably connected to the main handle, and the other end is used to support the second connecting segment. The third connecting segment is connected to the main handle.
10. The scalpel according to claim 8, characterized in that, The second thickened part is detachably connected to the secondary tool holder.