A surgical blade quick change device
By designing a quick-change device for surgical blades, utilizing irregular slots and locking blocks combined with an anti-slip sleeve, the problems of complex blade replacement and slippage in existing surgical blades are solved, achieving quick replacement and safe use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU MOBEN BIOMEDICAL TECHNOLOGY CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-07-24
AI Technical Summary
The existing scalpel blade replacement mechanism is complex, time-consuming, and the smooth, thin handle makes it easy to slip, affecting operational efficiency and safety.
A quick-change device for surgical blades is designed. It utilizes an irregular slot and block structure, combined with an anti-slip sleeve, to achieve quick fixation and removal of the blade. The operation process is simplified by the cooperation of the irregular and protruding blocks, and the anti-slip sleeve prevents slippage.
It enables quick blade replacement, improves operational efficiency, enhances the safety and convenience of using the scalpel, prevents slippage, and meets the sterilization requirements of the surgical environment.
Smart Images

Figure CN224540276U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a quick-change device for surgical blades. Background Technology
[0002] A scalpel is a specialized instrument consisting of a blade and a handle, used to cut human or animal tissues. Different blades are used for different situations, making it an indispensable and important surgical tool.
[0003] A medical scalpel blade replacement device is disclosed in patent publication number CN207286112U. This patent includes a handle, mounting bracket, push rod motor, clamping plates, reinforcing ribs, power switch, single-blade double-throw switch, battery, charging interface, charging indicator light, working indicator light, and scalpel blade. This medical scalpel blade replacement device uses two clamping plates to clamp or release the scalpel blade. The operator only needs to operate the single-blade double-throw switch on the handle to control the forward and reverse rotation of the push rod motor, without contacting the blade. It offers fast blade replacement, simple operation, high safety, and good practicality. However, this patent also has the following problems:
[0004] The aforementioned scalpel has a relatively complex blade replacement mechanism, which may be time-consuming during surgical procedures. This makes it inconvenient for medical staff to quickly change the blade. Furthermore, the handle is relatively smooth and slender, which may cause it to slip easily when held, making it inconvenient to use.
[0005] To address the above problems, a quick-change device for surgical blades needs to be designed to overcome them. Utility Model Content
[0006] The main objective of this invention is to provide a quick-change device for surgical blades, which can effectively solve the problems in the background art.
[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0008] A quick-change device for surgical blades includes a handle, and a quick-change component is disposed on the outside of the handle;
[0009] The quick-change assembly includes a blade holder slot at one end of the blade holder, an irregularly shaped locking block in the middle of the blade holder slot, a blade being fitted into the outer wall of the irregularly shaped locking block, an irregularly shaped slot in the middle of the blade, a circular groove on the inner side of the irregularly shaped locking groove near the blade holder, a connecting block inside the circular groove, a spring on one side of the connecting block, a protruding locking block at one end of the spring, a circular hole at the other end of the blade holder, an anti-slip sleeve on the outer wall of the blade holder near the blade holder slot, and an anti-slip protruding pad around the outer wall of the anti-slip sleeve.
[0010] As a preferred embodiment of this utility model, the blade plate groove is fixedly connected to the blade holder, and the irregular locking block is fixedly connected to the blade plate groove.
[0011] As a preferred embodiment of this utility model, the blade is engaged with the irregular locking block, and the connecting block is fixedly connected to the circular groove.
[0012] As a preferred embodiment of this utility model, the spring is fixedly connected to the connecting block, and the spring is fixedly connected to the protruding locking block.
[0013] As a preferred embodiment of this utility model, the protruding locking block and the irregular locking block are engaged, and the anti-slip sleeve is sleeved with the knife handle.
[0014] As a preferred embodiment of this utility model, the anti-slip protrusion pad and the anti-slip sleeve are fixedly connected.
[0015] Beneficial effects
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] In this invention, a quick-change device for surgical blades is designed. The blade has an irregular groove that fits into the middle of an irregular block, and a protruding block fits into the inside of one end of the irregular block for fixation. The device has a simple structure, is easy to operate, and facilitates quick blade replacement, thereby improving the speed of changing surgical blades. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the knife handle and blade of this utility model;
[0019] Figure 2 This is a structural schematic diagram of the irregular card block and irregular card slot of this utility model;
[0020] Figure 3 This is a schematic diagram of the protruding locking block and spring of this utility model.
[0021] In the diagram: 1. Blade holder; 2. Quick change assembly; 201. Blade slot; 202. Irregular locking block; 203. Blade; 204. Irregular slot; 205. Circular groove; 206. Protruding locking block; 207. Spring; 208. Connecting block; 209. Anti-slip sleeve; 210. Anti-slip protruding pad; 211. Circular hole. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0023] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.
[0024] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only. In order to make the technical means, creative features, and achieved objectives and effects of this utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0025] like Figure 1-3 As shown, a quick-change device for surgical blades includes a handle 1, and a quick-change assembly 2 is provided on the outside of the handle 1.
[0026] The quick-change assembly 2 includes a blade plate slot 201 located at one end of the handle 1. An irregular locking block 202 is located in the middle of the blade plate slot 201. A blade 203 is embedded in the outer wall of the irregular locking block 202. An irregular slot 204 is located in the middle of the blade 203. A circular groove 205 is located on the inner side of the irregular slot 204 near the handle 1. A connecting block 208 is located inside the circular groove 205. A spring 207 is located on one side of the connecting block 208. A protruding locking block 206 is located at one end of the spring 207. A circular hole 211 is located at the other end of the handle 1. An anti-slip sleeve 209 is fitted on the outer wall of the end of the handle 1 near the blade plate slot 201. An anti-slip protruding pad 210 is provided around the outer wall of the anti-slip sleeve 209.
[0027] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 As shown, the blade plate groove 201 is fixedly connected to the blade holder 1, the irregular locking block 202 is fixedly connected to the blade plate groove 201, the blade 203 is locked to the irregular locking block 202, the connecting block 208 is fixedly connected to the circular groove 205, the spring 207 is fixedly connected to the connecting block 208, the spring 207 is fixedly connected to the protruding locking block 206, the protruding locking block 206 is locked to the irregular locking block 202, the anti-slip sleeve 209 is sleeved to the blade holder 1, and the anti-slip protruding pad 210 is fixedly connected to the anti-slip sleeve 209.
[0028] The circular holes 211 are provided in multiple sets to facilitate hanging on different shelves. The anti-slip sleeve 209 on the outer wall of the knife handle 1 can be removed for timely disinfection, cleaning and replacement.
[0029] The working process of this utility model is as follows: Using the surgical blade quick-change device designed in this solution, during operation, the irregular slot 204 in the middle of the blade 203 is inserted into the upper end of the irregular locking block 202 until it reaches the middle of the irregular locking block 202. During this insertion process, the end of the irregular locking block 202 near the circular hole 211 presses against the protruding locking block 206 on the inner side of the blade 203. The protruding locking block 206 presses against the spring 207, and the spring 207 causes the protruding locking block 206 to retract until the blade 203 is inserted and aligned with the slot in the irregular locking block 202 near the anti-slip sleeve 209. At this point, the spring 207... 07. After gaining space, the blade rebounds and ejects the protruding locking block 206 at one end into the groove 205 of the round slot, which is then inserted into the groove of the irregular locking block 202 to reinforce the installation of the blade 203. Installation is simple. When disassembling, the blade 203 can be removed by pushing it towards the end near the anti-slip sleeve 209 and lifting it upwards. The structure is simple and can achieve the effect of quick replacement of the blade 203. The anti-slip sleeve 209 and the anti-slip protruding pad 210 provide an anti-slip effect to prevent it from slipping during surgery. The handle 1 is suspended through the round hole 211 to prevent the blade from directly contacting the table surface when not in use, thus preventing infection.
[0030] 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 quick-change device for surgical blades, comprising a blade handle (1), characterized in that: The tool holder (1) is provided with a quick-change assembly (2) on its exterior; The quick-change assembly (2) includes a blade plate groove (201) disposed at one end of the blade holder (1). An irregular locking block (202) is provided in the middle of the blade plate groove (201). A blade (203) is embedded in the outer wall of the irregular locking block (202). An irregular slot (204) is formed in the middle of the blade (203). A circular groove (205) is formed on the inner side of the irregular slot (204) near the end of the blade holder (1). A connecting block (208) is provided inside the groove (205). A spring (207) is provided on one side of the connecting block (208). A protruding locking block (206) is provided at one end of the spring (207). A round hole (211) is provided at the other end of the knife handle (1). An anti-slip sleeve (209) is fitted on the outer wall of the end of the knife handle (1) near the blade plate groove (201). An anti-slip protruding pad (210) is provided around the outer wall of the anti-slip sleeve (209).
2. The surgical blade quick-change device according to claim 1, characterized in that: The blade plate groove (201) is fixedly connected to the blade handle (1), and the irregular locking block (202) is fixedly connected to the blade plate groove (201).
3. The surgical blade quick-change device according to claim 1, characterized in that: The blade (203) is engaged with the irregular locking block (202), and the connecting block (208) is fixedly connected with the circular groove (205).
4. The surgical blade quick-change device according to claim 1, characterized in that: The spring (207) is fixedly connected to the connecting block (208), and the spring (207) is fixedly connected to the protruding locking block (206).
5. The surgical blade quick-change device according to claim 1, characterized in that: The protruding locking block (206) is engaged with the irregular locking block (202), and the anti-slip sleeve (209) is sleeved with the handle (1).
6. The surgical blade quick-change device according to claim 1, characterized in that: The anti-slip protruding pad (210) and the anti-slip sleeve (209) are fixedly connected.
Citation Information
Patent Citations
CN207286112U