A three-way circular arc blade scalpel and a scalpel thereof
By designing a three-directional circular arc blade, the problem of perpendicularity and cutting direction when removing the meniscus and joint capsule connection by traditional blades is solved, achieving a highly efficient cutting effect, suitable for total knee and unicompartmental knee replacement surgery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AKSU PEOPLES HOSPITAL
- Filing Date
- 2025-04-11
- Publication Date
- 2026-06-09
AI Technical Summary
Traditional surgical blades, especially when removing the meniscus and joint capsule, have problems such as the blade not being perpendicular enough and the cutting direction not coinciding with the circumferential tangent in total knee replacement and unicompartmental knee replacement surgery, resulting in poor cutting results.
A three-way circular arc blade was designed, with the blade tip raised to form a front, left, and right circular arc blade structure, constituting a complete three-way circular arc blade structure, which solves the problems of the blade not being perpendicular enough and the cutting direction not overlapping with the circumferential tangent.
It achieves efficient cutting within a limited space, meets the forehand and backhand requirements for meniscus removal, and improves the cutting effect and efficiency of the surgery.
Smart Images
Figure CN224331002U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical devices, specifically a three-directional circular arc blade surgical blade and its surgical knife. Background Technology
[0002] During total knee replacement surgery, the incision is relatively large, and the osteotomy surface is also relatively large. The tibia is completely dislocated relative to the femur. After osteotomy at the tibial and femoral ends, the remaining meniscus and hyperplastic synovium are removed and cleaned without any obstruction.
[0003] Unicompartmental knee replacement is a procedure for unilateral osteoarthritis of the knee, and the surgery is completely different from total knee replacement. The incision and amount of bone removed are much smaller than in total knee replacement. Only a small incision is made on the affected side to remove the articular cartilage surfaces of the femur and tibia on the same side. No incision or bone removal is made on the contralateral side, as the tibia is not dislocated relative to the femur, and the joint space is narrow. The removed articular cartilage surfaces can be grasped and removed from the body. However, the meniscus is not disconnected from the joint capsule and cannot be directly removed. The surgeon needs to grasp it with one hand and remove it with the other.
[0004] Traditional scalpel blades are flat lancets, which are often inconvenient to use when removing the meniscus and joint capsule. Firstly, the limited vertical space prevents the handle from standing too high, resulting in the cut material and blade not being perpendicular; the smaller the angle, the worse the cutting effect. Secondly, the meniscus grows around the joint capsule, and because the limited vertical space prevents the handle from standing upright, it also prevents the blade from cutting along the tangential direction of the circumference, making uniform cutting impossible with traditional lancets. Utility Model Content
[0005] The purpose of this invention is to provide a three-directional circular arc blade surgical blade and its scalpel to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A three-way circular arc blade surgical blade includes a blade body, the front end of which has a cutting edge. The cutting edge is raised to one side relative to the blade body. A front circular arc blade structure is provided on the front side of the cutting edge, a left circular arc blade structure is provided on the left side of the cutting edge, and a right circular arc blade structure is provided on the right side of the cutting edge. The front circular arc blade structure, the left circular arc blade structure, and the right circular arc blade structure are connected together to form a complete three-way circular arc blade structure.
[0008] Furthermore, the cutting edge is tilted upwards at 10-30 degrees relative to the blade body.
[0009] Furthermore, the cutting edge is tilted 20 degrees relative to the blade body.
[0010] Furthermore, a handle mounting port is provided on the blade body.
[0011] This utility model also provides a scalpel, including a three-way circular arc blade as described above and a handle for mounting the three-way circular arc blade.
[0012] Compared with the prior art, the beneficial effects of this utility model are: this utility model changes the blade from a flat plane to a three-dimensional arc, and the blade from a single-direction edge to a three-direction arc edge. This solves two problems: first, the blade is not perpendicular to the meniscus when removing the meniscus; second, it solves the problem that the cutting direction does not overlap with the circumferential tangent direction, thus satisfying the contradiction between forehand and backhand meniscus removal. Attached Figure Description
[0013] Figure 1 This is one of the schematic diagrams of a three-directional circular arc blade surgical blade according to this utility model.
[0014] Figure 2 This is the second schematic diagram of a three-directional circular arc blade surgical blade according to this utility model.
[0015] In the figure: blade body 1, blade edge 10, front arc blade structure 100, left arc blade structure 101, right arc blade structure 102, handle mounting port 11. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figure 1 and Figure 2 A three-way circular arc blade surgical blade includes a blade body 1. The front end of the blade body 1 has a blade portion 10. The blade portion 10 is raised to one side relative to the blade body 1. A front circular arc blade structure 100 is provided on the front side of the blade portion 10. A left circular arc blade structure 101 is provided on the left side of the blade portion 10. A right circular arc blade structure 102 is provided on the right side of the blade portion 10. The front circular arc blade structure 100, the left circular arc blade structure 101 and the right circular arc blade structure 102 are connected together to form a complete three-way circular arc blade structure.
[0018] Continue reading Figure 2 The blade portion 10 is tilted 10-30 degrees relative to the blade body 1, preferably 20 degrees.
[0019] Continue reading Figure 1The blade body 1 is provided with a handle mounting port 11, which is used to connect with the handle. This is the conventional structure of a surgical blade and will not be described in detail.
[0020] This utility model also provides a scalpel, including a three-way circular arc blade as described above and a handle for mounting the three-way circular arc blade. The difference between this scalpel and a conventional scalpel lies in the three-way circular arc blade, which is described above. The handle portion has a conventional structure and will not be elaborated further.
[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A three-dimensional circular arc blade surgical blade, comprising a blade body (1), characterized in that, The front end of the blade body (1) has a blade portion (10). The blade portion (10) is raised to one side relative to the blade body (1). A front arc blade structure (100) is provided on the front side of the blade portion (10), a left arc blade structure (101) is provided on the left side of the blade portion (10), and a right arc blade structure (102) is provided on the right side of the blade portion (10). The front arc blade structure (100), the left arc blade structure (101), and the right arc blade structure (102) are connected together to form a complete three-way arc blade structure.
2. The three-directional circular arc blade surgical blade according to claim 1, characterized in that, The blade portion (10) is tilted 10-30 degrees relative to the blade body (1).
3. A three-directional circular arc blade surgical blade according to claim 2, characterized in that, The blade portion (10) is tilted 20 degrees relative to the blade body (1).
4. A three-directional circular arc blade surgical blade according to claim 1, characterized in that, The blade body (1) is provided with a handle mounting port (11).
5. A surgical scalpel, characterized in that, Includes a three-way circular arc blade surgical blade as described in any one of claims 1-4 and a handle for mounting the three-way circular arc blade surgical blade.