Osteotomy knife
By introducing a snap-fit fit between the striking block and the blade in the osteotomy knife and using the assistant striking block to transmit kinetic energy, the problems of osteotomy knife accuracy and breakage in pediatric orthopedic surgery are solved, achieving higher operational safety and surgical efficiency.
Patent Information
- Application Number
- CN202422407319.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Existing osteotomies make it difficult to precisely control the cutting depth and angle during pediatric orthopedic surgery, and the blades are prone to breakage, increasing surgical risk and complexity.
An osteotomy knife including a handle, a blade and a striking block is designed. The striking block and the blade are snap-fitted together, and the assistant striking block is used to transfer kinetic energy to the blade, thereby increasing the force area and uniformity and reducing the risk of fracture.
The accuracy and operability of the osteotomy knife are improved, the operator's fatigue and the risk of blade breakage are reduced, and the safety and efficiency of the operation are enhanced.
Smart Images
Figure CN223311210U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a medical device, and in particular to an osteotomy knife. Background Art
[0002] As an indispensable tool in orthopedic surgery, the osteotomy knife has evolved from simple to complex, from crude to refined. Early osteotomies relied on traditional surgical blades or saws, which were difficult to perform and lacked precision, requiring high skill and experience. With advances in medical technology, the design of osteotomies has been gradually optimized, resulting in the emergence of a variety of specialized osteotomy instruments suitable for different surgical needs, significantly improving surgical safety and efficiency.
[0003] However, the existing technology still faces numerous challenges in the use of osteotomies for pediatric orthopedic surgery, particularly in osteotomies of hand articular cartilage or metacarpophalangeal bones. Because pediatric bone is relatively soft and elastic, traditional surgical blades have difficulty precisely controlling the cutting depth and angle during osteotomy. A slight mistake can damage surrounding soft tissue or create an uneven osteotomy surface. Furthermore, the surgeon's use of the handle to control the blade's cutting position at the osteotomy site is not only difficult to control but can also easily cause the blade to break due to uneven force, further increasing the risk and complexity of the surgery.
[0004] Therefore, how to improve the accuracy and operability of osteotomies while ensuring surgical safety has become an important direction in the current research and development of pediatric orthopedic surgical instruments. Utility Model Content
[0005] The purpose of the present application is to provide an osteotomy knife to solve the problems in the prior art that osteotomies are difficult to operate and the blades are prone to breakage.
[0006] In order to achieve the above-mentioned purpose, an embodiment of the present application provides an osteotomy tool, including a handle, a blade and a knocking block, wherein the handle has a gripping end and an assembly end; the blade is arranged on the assembly end of the handle; the knocking block has a mating end and a knocking end, the mating end is arranged on the blade, and the knocking end is used to transfer the kinetic energy of knocking to the blade.
[0007] In one embodiment, a matching slot is provided on the matching end portion of the knocking block, and the knocking block is engaged with the blade through the matching slot.
[0008] In one embodiment, the number of the mating slots is at least two, and at least two of the mating slots are cross-arranged.
[0009] In one embodiment, at least two of the mating slots have different widths.
[0010] In one embodiment, at least one of the mating slots is opened at the bottom of another mating slot to form a nested slot, and in the nested slot, the width of the mating slot close to the knocking end is smaller than the width of the mating slot away from the knocking end.
[0011] In one embodiment, a friction block is provided on the inner wall of the matching slot, and the inner wall of the matching slot abuts against the blade through the friction block.
[0012] In one embodiment, the friction block is made of rubber.
[0013] In one embodiment, a cross-sectional area of the striking end portion along a first direction is greater than a cross-sectional area of the mating end portion along the first direction, and the first direction is perpendicular to a cutting direction of the blade.
[0014] In one embodiment, the blade is detachably arranged on the mounting end of the handle.
[0015] In one embodiment, the gripping end and the assembly end on the knife handle are fixedly connected via a connecting plate, and the connecting plate is a hollow plate structure.
[0016] The above technical solution reduces the operator's operating fatigue and the risk of blade breakage. During use, the operator holds the knife handle and places the blade on the patient's severed bone. Then the assistant holds the striking block and places the assembly end of the striking block on the blade. The operator only needs to grasp the osteotomy position and direction, and the assistant uses a bone hammer to hit the striking end. The striking end is used to transfer the kinetic energy of the striking to the blade, so that the bone hammer indirectly strikes the blade, causing the blade to cut the bone. Compared with the existing technology, the striking block of the present application can increase the force-bearing area of the blade, make the blade evenly stressed, prevent the blade from breaking, and increase the striking area of the bone hammer, thereby improving surgical efficiency. Therefore, the technical solution of the present application can reduce the operator's operating fatigue and the risk of blade breakage.
[0017] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.
[0019] Figure 1 This is a structural schematic diagram of one embodiment of an osteotomy knife provided by the present application from one perspective;
[0020] Figure 2 A schematic structural diagram of one embodiment of an osteotomy knife provided in the present application from two perspectives;
[0021] Figure 3 A schematic structural diagram of a portion of the structure of one embodiment of an osteotomy knife provided in the present application from three perspectives;
[0022] Figure 4 This is a schematic structural diagram from four perspectives of a partial structure of another embodiment of an osteotomy knife provided in the present application.
[0023] icon:
[0024] 100-handle; 110-grip end; 120-assembly end; 130-connecting plate;
[0025] 200 - striking block; 210 - mating end; 212 - mating slot; 214 - nesting slot; 220 - striking end;
[0026] 300-blade. DETAILED DESCRIPTION
[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0028] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.
[0029] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.
[0030] The embodiment of the present application provides an osteotomy knife, such as Figure 1 and Figure 2 As shown, the osteotome includes a handle 100 , a blade 300 and a striking block 200 .
[0031] The knife handle 100 has a gripping end 110 and an assembly end 120 ; the gripping end 110 is used for being gripped by the operator's hand; the assembly end 120 is used for clamping the blade 300 .
[0032] The blade 300 is disposed on the assembly end 120 of the knife handle 100 . The operator can move the blade 300 through the knife handle 100 to move the blade 300 to the part of the patient to be osteotomized.
[0033] The striking block 200 includes a mating end 210 and a striking end 220. The mating end 210 is disposed on the blade 300; the striking end 220 is used to transfer the kinetic energy of the striking to the blade 300. The design of the striking block 200 increases the striking area of the bone hammer, making it easier for an assistant to position and strike steadily during operation, thereby improving the accuracy and efficiency of the striking. Furthermore, because the striking force is more evenly applied to the blade 300, the number of strikes required during surgery may be reduced, further shortening the surgical time.
[0034] During use, the surgeon holds the handle 100 and places the blade 300 on the patient's severed bone. The assistant then holds the striking block 200 and places the mating end 210 of the striking block 200 on the blade 300. The surgeon only needs to grasp the osteotomy position and direction, and the assistant uses a bone hammer to strike the striking end 220. The striking end 220 is used to transfer the kinetic energy of the striking to the blade 300, so that the bone hammer indirectly strikes the blade 300, causing the blade 300 to cut the bone. Compared to the prior art, the striking block 200 of the present application can increase the force-bearing area of the blade 300, so that the force on the blade 300 is evenly distributed, preventing the blade 300 from breaking, and increasing the striking area of the bone hammer, thereby improving surgical efficiency. Therefore, the technical solution of the present application can reduce the surgeon's operating fatigue and the risk of blade 300 breaking.
[0035] Since the blade 300 is subjected to more uniform force and the design of the striking block 200 makes the striking process more stable and controllable, the osteotomy knife of the present application can better protect the soft tissue and other important structures around the patient during surgery, reducing the risk of surgical complications.
[0036] The design of the handle 100 enables the surgeon to conveniently hold and move the blade 300 to the osteotomy site of the patient, and the detachable connection between the striking block 200 and the blade 300 allows the blade 300 of different shapes or sizes to be replaced as needed during the operation, thereby enhancing the flexibility and adaptability of the operation.
[0037] like Figure 1 and Figure 3 As shown, in one embodiment, a mating slot 212 is provided on the mating end 210 of the knocking block 200, and the knocking block 200 is engaged with the blade 300 through the mating slot 212, so that the knocking block 200 can slide by limiting the blade 300 through the inner wall of the mating slot 212, so that the blade 300 maintains the osteotomy position, thereby improving the surgical accuracy. The inner wall of the mating slot 212 can also increase the contact area with the blade 300, so that the blade 300 is evenly stressed.
[0038] The engagement between the engaging slot 212 and the blade 300 ensures a tighter and more secure connection between the striking block 200 and the blade 300. This secure connection helps maintain the striking block 200 in a stable position during surgery, preventing it from loosening or falling off due to external forces, thereby improving the safety and reliability of the surgery.
[0039] The design of the slot 212 allows the striking block 200 to be easily installed and removed from the blade 300. This convenient operation not only improves the efficiency of surgical preparation and cleaning, but also makes it easier to replace blades 300 of different sizes or types as needed during surgery.
[0040] Connecting the striking block 200 and the blade 300 by means of a snap-fit connection allows for separate cleaning, disinfection, and maintenance of the two, which is of great significance for maintaining the hygienic state of the surgical instrument and extending its service life.
[0041] The design of the engaging slot 212 enables the striking block 200 to be compatible with blades 300 of various shapes and sizes, thereby meeting different surgical requirements. This flexibility enables the osteotomy knife to be applied to a wider range of surgical scenarios, improving its versatility and practicality.
[0042] In one embodiment, there are at least two matching slots 212, and at least two matching slots 212 are arranged crosswise. One matching slot 212 is adapted to a blade 300 of a certain size. Providing two or more matching slots 212 allows the striking block 200 to adapt to different blades 300, thereby improving the adaptability of the striking block 200.
[0043] For example, Figure 3 As shown, two mating slots 212 are provided, and the two mating slots 212 are arranged crosswise. In another embodiment, three mating slots 212 are provided, and the three mating slots 212 are arranged crosswise. In another embodiment, three mating slots 212 are provided, and two of the mating slots 212 are arranged crosswise. In another embodiment, four mating slots 212 are provided, and the four mating slots 212 are arranged crosswise.
[0044] By cross-arranged matching slots 212, the striking block 200 can adapt to a variety of blades 300 of different sizes and shapes. This design makes the striking block 200 more flexible and versatile during surgery, and can meet different surgical scenarios and patient needs.
[0045] The cross-arranged matching slots 212 can maximize the surface area of the knock block 200 within a limited space, allowing multiple slots to be compactly arranged together. This design not only reduces the size and weight of the knock block 200, but also improves its portability and ease of use.
[0046] like Figure 3 As shown, the cross arrangement of the matching slots 212 is compared with the parallel arrangement of the matching slots 212, so that the center of gravity of the knocking block 200 and the blade 300 is more balanced after the matching, thereby making the force on the blade 300 more uniform.
[0047] In one embodiment, at least two of the mating slots 212 have different widths, so that the mating slots 212 can accommodate blades 300 of different sizes, thereby increasing adaptability.
[0048] By designing the matching slots 212 of different widths, the striking block 200 can be adapted to a wider variety of blades 300. This design enables the same striking block 200 to be adapted to surgical blades 300 of different sizes and specifications, greatly improving the versatility and flexibility of the surgical instrument.
[0049] Since the striking block 200 can be adapted to a variety of blades 300 , the hospital or operating room does not need to equip each blade 300 with a dedicated striking block 200 , thereby reducing the purchase and storage costs of the equipment.
[0050] During the surgical preparation phase, medical personnel can select a suitable blade 300 according to surgical needs and quickly and accurately install it into the corresponding slot of the striking block 200. This design simplifies the preparation process of surgical instruments and improves surgical efficiency.
[0051] The highly adaptable knocking block 200 can ensure that the blade 300 is firmly fixed in the slot during surgery and will not become loose or fall off due to size mismatch, which helps reduce the risk of accidents during surgery and improves the safety of surgery.
[0052] For the surgeon, using a highly adaptable knocking block 200 can reduce the inconvenience and interference caused by frequently replacing the knocking block 200 or adjusting the position of the blade 300, making the surgical process smoother and more comfortable.
[0053] like Figure 4As shown, in one embodiment, at least one mating slot 212 is formed at the bottom of another mating slot 212 to form a nested slot 214; within the nested slot 214, the width of the mating slot 212 near the striking end 220 is smaller than the width of the mating slot 212 farther from the striking end 220. By creating a new mating slot 212 at the bottom of the existing mating slot 212 to form the nested slot 214, the space within the striking block 200 is effectively utilized, avoiding the need to increase the size of the striking block 200. This compact design makes the entire surgical instrument lighter, easier to carry, and easier to operate. Medical personnel can select the appropriate blade 300 based on surgical needs and easily install it into the corresponding slot. The design of the nested slot 214 makes the installation process more intuitive and simple, reducing errors and delays caused by improper operation.
[0054] This design of nested slots 214 allows the striking block 200 to accommodate a wider range of blade sizes. The narrower inner slots can securely hold smaller blades 300, while the wider outer slots can accommodate larger blades 300. This design significantly enhances the applicability and flexibility of the striking block 200.
[0055] In one embodiment, a friction block is provided on the inner wall of the matching slot 212 , and the inner wall of the matching slot 212 abuts against the blade 300 through the friction block.
[0056] The presence of the friction block can increase the friction between the blade 300 and the engaging slot 212, making the blade 300 less likely to loosen or fall off when struck or vibrated. This stable connection helps ensure safety and reliability during surgery or related operations.
[0057] The precisely designed friction block ensures that the blade 300 is accurately positioned in the mating slot 212, reducing errors caused by positional offset. This high-precision positioning helps improve the accuracy and stability of the surgery or operation, ensuring the accuracy and reliability of the final result.
[0058] The presence of the friction block can also protect the inner wall of the matching slot 212, reducing direct contact and wear between the blade 300 and the inner wall of the slot. This helps to extend the service life of the knock block 200 and the blade 300, and reduce replacement frequency and cost.
[0059] The friction block can also reduce the noise and vibration generated by the blade 300 during the striking process to a certain extent. This is particularly important in a surgical environment, because noise and vibration may distract the operator's attention and affect the surgical effect.
[0060] For example, the friction block material includes, but is not limited to, rubber, metal, or plastic. Different friction block materials can be selected based on the blade 300 material and the operating environment to accommodate different application requirements. This flexibility enables the striking block 200 to be more widely applicable in various surgical or operating scenarios.
[0061] In one embodiment, the friction block is made of rubber.
[0062] The rubber material has good friction properties and can provide sufficient friction between the blade 300 and the matching slot 212, ensuring that the blade 300 is not easily loosened or dislodged when knocked or vibrated. This stable connection is crucial for surgical or precision operations and can significantly improve the safety and reliability of the operation.
[0063] The rubber material has certain elasticity and damping properties, which can absorb some of the vibration and impact energy when the blade 300 contacts the slot, thereby reducing noise and vibration. This is particularly important in the surgical environment, as low noise and vibration can reduce interference with the surgeon and patient, improving the success rate of the surgery and patient comfort.
[0064] The rubber friction block forms a buffer layer between the blade 300 and the slot, reducing direct wear on the slot's inner wall. The rubber's softness also protects the blade 300 from scratches or collisions, thereby extending the lifespan of both the blade 300 and the slot. Rubber is highly adaptable to changes in environmental factors such as temperature and humidity, maintaining stable friction properties under varying conditions. This makes mechanical structures employing rubber friction blocks suitable for a wider range of applications and working environments.
[0065] like Figures 1 to 4 As shown, in one embodiment, the cross-sectional area of the striking end portion 220 along the first direction is greater than the cross-sectional area of the mating end portion 210 along the first direction, as shown in FIG. Figure 2 The direction indicated by the middle arrow is the cutting direction of the blade 300 , and the first direction is perpendicular to the cutting direction of the blade 300 .
[0066] The striking end 220 has a larger cross-sectional area along the first direction than the mating end 210. This variation in cross-sectional area helps disperse the stress generated during the striking process. Due to the larger cross-sectional area of the striking end 220, stress can be more evenly distributed across the material, thereby reducing stress concentration and lowering the risk of damage to the striking block 200 due to excessive localized stress.
[0067] Since the striking end 220 has a larger cross-sectional area, the contact area between the striking end 220 and the bone hammer is also increased accordingly, which increases stability during the striking process and reduces the possibility of the bone hammer slipping off the striking end 220 during the striking process, thereby improving the reliability and safety of the entire operation process.
[0068] In one embodiment, the blade 300 is detachably mounted on the assembly end 120 of the knife handle 100. For example, the blade 300 is detachably mounted on the knife handle 100 by threaded engagement, bolt connection, or snap-on connection. For example, in one embodiment, bolt holes are provided on the assembly end 120 of the knife handle 100 and the blade 300, and bolts are provided in the bolt holes of the blade 300 and the knife handle 100, so that the blade 300 is detachably mounted on the assembly end 120 of the knife handle 100.
[0069] The blade 300 is a consumable part and may wear or be damaged after prolonged use or under high load. The detachable design allows users to easily replace a worn or damaged blade 300 without having to replace the entire handle 100, thereby reducing maintenance costs and time.
[0070] By replacing different blades 300, different work requirements can be met. For example, in medical surgery, different blades 300 may be required for delicate cutting or peeling operations; in machining, blades 300 of different shapes and sizes may be required to process different workpieces. The detachable design provides flexibility, allowing a single handle 100 to be used with a variety of blades 300.
[0071] The detachable blade 300 design allows the blade 300 and the knife handle 100 to be stored and transported separately, thereby saving space and reducing transportation costs. In addition, this also facilitates rapid assembly and use when needed.
[0072] like Figure 1 and Figure 2 As shown, in one embodiment, the gripping end 110 and the assembly end 120 on the knife handle 100 are fixedly connected via a connecting plate 130 , and the connecting plate 130 is a hollow plate structure.
[0073] The hollow plate structure of the connecting plate 130 can significantly reduce the weight compared to a solid plate, making the entire mechanical structure lighter. This is especially important for tools that require handheld operation, as it can reduce the burden on the user's hands and improve the comfort and durability of operation.
[0074] Although the connecting plate 130 adopts a hollow design, it can still maintain sufficient structural strength through reasonable structural layout and wall thickness design. This design can reduce unnecessary material usage while ensuring strength, achieving a balance between lightness and strength.
[0075] The hollow design of the connecting plate 130 reduces the amount of material used and reduces production costs. In mass production, this design can bring significant economic benefits and also contribute to environmental protection and sustainable development.
[0076] The hollow plate structure of the connecting plate 130 has a certain visual aesthetics and can enhance the appearance of the mechanical structure. In product design, aesthetics is also one of the factors that cannot be ignored. It can attract the attention of users and enhance the market competitiveness of products.
[0077] It should be noted that, unless there is any conflict, the features in the embodiments of this application can be combined with each other.
[0078] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.
Claims
1. An osteotomy knife, characterized in that: include: A knife handle (100), the knife handle (100) having a gripping end (110) and an assembly end (120); a blade (300), the blade (300) being disposed on the assembly end (120) of the knife handle (100); A striking block (200) is provided, wherein the striking block (200) has a mating end (210) and a striking end (220), wherein the mating end (210) is arranged on the blade (300), and the striking end (220) is used to transfer striking kinetic energy to the blade (300).
2. The osteotomy knife according to claim 1, characterized in that A matching slot (212) is provided on the matching end portion (210) of the knocking block (200), and the knocking block (200) is engaged with the blade (300) through the matching slot (212).
3. The osteotomy knife according to claim 2, characterized in that The number of the matching card slots (212) is at least two, and at least two of the matching card slots (212) are arranged crosswise.
4. The osteotomy knife according to claim 3, characterized in that At least two of the matching slots (212) have different widths.
5. The osteotomy knife according to claim 3 or 4, characterized in that: At least one of the matching card slots (212) is opened at the bottom of another matching card slot (212) to form a nested card slot (214); in the nested card slot (214), the width of the matching card slot (212) close to the knocking end (220) is smaller than the width of the matching card slot (212) away from the knocking end (220).
6. The osteotomy knife according to claim 2, characterized in that A friction block is provided on the inner wall of the matching slot (212), and the inner wall of the matching slot (212) abuts against the blade (300) via the friction block.
7. The osteotomy knife according to claim 6, characterized in that The friction block is made of rubber.
8. The osteotomy knife according to claim 1, characterized in that The cross-sectional area of the striking end portion (220) along a first direction is greater than the cross-sectional area of the matching end portion (210) along the first direction, and the first direction is perpendicular to the cutting direction of the blade (300).
9. The osteotomy knife according to claim 1, characterized in that The blade (300) is detachably arranged on the assembly end (120) of the knife handle (100).
10. The osteotomy knife according to claim 1, characterized in that The gripping end (110) and the assembly end (120) on the knife handle (100) are fixedly connected via a connecting plate (130), and the connecting plate (130) is a hollow plate structure.