Adenomyosis uterine-conserving u-surgical cutter
By designing a U-shaped surgical blade for adenomyosis with uterine preservation, a combination of vertical grooves, circular grooves, and limiting blocks is used to achieve stable adjustment and precise resection of the blade. This solves the problem of damage to healthy tissue caused by blade position adjustment, and improves the safety and effectiveness of the surgery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENYANG PROVINCIAL MEDICAL & GYNECOLOGICAL HOSPITAL
- Filing Date
- 2025-04-16
- Publication Date
- 2026-06-23
AI Technical Summary
In uterine-preserving U-shaped surgery for adenomyosis, adjusting the position of the scalpel blade can easily damage healthy tissue, especially when changing the direction of the blade, which increases the area and probability of damage.
A surgical blade for uterine-preserving surgery in adenomyosis has been designed, comprising a blade barrel and a blade body. By setting vertical and annular grooves on the side wall of the blade barrel, and the cooperation between the slider and the sliding cap, the up-and-down movement and angle adjustment of the blade body can be realized. The movement of the slider is restricted by the elastic deformation of the limiting block to ensure the stability of the blade during the resection process.
It effectively avoids damage to healthy tissue by cutting blades, improves the stability and precision of lesion removal, and reduces damage to healthy tissues.
Smart Images

Figure CN224387504U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of medical devices, specifically to a surgical blade for uterine-preserving surgery in adenomyosis. Background Technology
[0002] Adenomyosis is a very common gynecological disease caused by the invasion of endometrial glands and stroma into the myometrium, leading to cyclical proliferation, shedding, and bleeding.
[0003] There are many treatment options for adenomyosis, one of which is the U-shaped uterine-preserving surgery, designed to preserve the uterus while removing the lesions. It is primarily suitable for patients who wish to retain their fertility or do not wish to have their uterus removed. The surgical principle is a conservative approach, removing the main lesions of adenomyosis while preserving the normal structure of the uterus. The "U-shape" refers to the shape of the incision made during lesion removal, resembling a U-shape, to maximize the removal of diseased tissue while minimizing damage to the healthy uterine muscle layer.
[0004] Because the location, shape, and size of adenomyosis lesions are irregular, doctors often need to constantly adjust the blade position during a U-shaped resection to ensure accurate incision of the uterine wall at the lesion site before removing it. During the resection and removal process, doctors need to adjust the blade position multiple times, and may even need to change the blade direction to achieve complete removal of the lesion. In the process of adjusting the blade position, the blade tip and blade can easily scratch the surrounding healthy tissue, thus causing damage. Especially when changing the blade direction, the area swept by the blade tip and blade is larger, and the probability and length of damage to healthy tissue are greater. Utility Model Content
[0005] To address the aforementioned problem—namely, the potential for damage to healthy cells when adjusting the scalpel tip position during uterine-preserving surgery—this invention proposes a cutting tool for uterine-preserving surgery in adenomyosis. The tool includes a blade barrel with an open bottom. A cutting body is coaxially sleeved within the blade barrel. Two vertical grooves are formed on the side wall of the blade barrel, with their tops connected by an annular groove. A sliding cap is connected to the outer wall of the cutting body via a slider. The slider is slidably connected within the vertical grooves, and the sliding cap is positioned outside the blade barrel.
[0006] A further feature of this invention is that the cutter body includes a handle, the slider is disposed on the outer wall of the handle, a blade is mounted at the bottom end of the handle, and the outer diameter of the handle is the same as the inner diameter of the blade cylinder.
[0007] A further feature of this invention is that elastic limiting blocks are provided on both side walls of the vertical groove to limit the slider.
[0008] A further feature of this invention is that the distance between the limiting block and the bottom of the vertical groove is set at the same height as the slider.
[0009] A further feature of this invention is that the limiting block is arc-shaped.
[0010] A further feature of this invention is that the two vertical grooves are symmetrically arranged about the axis of the cutter barrel.
[0011] The beneficial effects of this utility model are as follows:
[0012] 1. Through the cooperation of two vertical grooves and annular groove, the slider can be adjusted within the two vertical grooves. When the slider slides upward along the vertical groove, it can drive the cutter body to move upward together, so that the entire cutter body enters the blade barrel and is not exposed. When the slider slides along the annular groove, it can drive the axis of the cutter body to rotate, thereby achieving the purpose of adjusting the angle of the cutter body. Since the annular groove is set at the top of the vertical groove, the cutter body is completely placed inside the blade barrel when adjusting the angle of the cutter body, thus avoiding the problem of the rotation of the cutter body damaging healthy tissue.
[0013] 2. By setting a limit block, the slider can be limited in the vertical direction when it is slid to the bottom of the vertical groove. That is, when the blade extends to make a cut, the blade can be more stable in the process of removing the lesion and avoid the problem of shaking. Attached Figure Description
[0014] Figure 1 A schematic diagram of the structure of this utility model is shown. Figure 1 .
[0015] Figure 2 A schematic diagram of the structure of this utility model is shown. Figure 2 .
[0016] Figure 3 A schematic diagram of the cutter barrel structure is shown.
[0017] Figure 4 A magnified view of a portion at point A is shown.
[0018] Figure 5 A schematic diagram of the cutter body is shown.
[0019] Reference numerals: 1. Blade barrel; 11. Vertical groove; 111. Limiting block; 12. Circular groove; 2. Cutting body; 21. Blade handle; 211. Sliding cap; 22. Blade. Detailed Implementation
[0020] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.
[0021] This utility model proposes a cutting knife for uterine-preserving surgery in adenomyosis, including a knife barrel 1, which is a cylindrical tube with a closed top and an open bottom. A cutting knife body 2 is coaxially sleeved inside the knife barrel 1, and the bottom end of the cutting knife body 2 can extend out from the bottom end of the knife barrel 1.
[0022] Two vertical grooves 11 are provided on the side wall of the cutter barrel 1, and the two vertical grooves 11 are symmetrically arranged about the axis of the cutter barrel 1. The top ends of the two vertical grooves 11 are connected by an annular groove 12, that is, the annular groove 12 is horizontally arranged, and the two ends of the annular groove 12 are respectively connected to the top ends of the two vertical grooves 11.
[0023] A slider is welded to the outer wall of the cutter body 2. The slider is adapted to the vertical groove 11 and the annular groove 12. The slider is slidably connected in the vertical groove 11 and can slide from the vertical groove 11 into the annular groove 12, and then slide from the annular groove 12 into another vertical groove 11. A sliding cap 211 is fixedly connected to the end of the slider away from the cutter body 2. The sliding cap 211 is located on the outside of the cutter cylinder 1 and is in contact with the cutter cylinder 1. Pushing the sliding cap 211 can drive the slider to move accordingly, thereby driving the cutter body 2 to move accordingly.
[0024] When the sliding cap 211 is pushed along the direction of the vertical groove 11, it can drive the cutter body 2 to move up and down. When the sliding cap 211 is pushed along the direction of the annular groove 12, it can drive the cutter body 2 to rotate along its axis.
[0025] The cutter body 2 includes a handle 21, a slider is welded to the side wall of the handle 21, and a blade 22 is installed at the top of the handle 21. When the slider is slid to the bottom of the vertical groove 11, the blade 22 extends out from the bottom of the cutter tube 1. When the slider is slid to the top of the vertical groove 11, the blade 22 is completely submerged inside the cutter tube 1.
[0026] The outer diameter of the handle 21 is the same as the inner diameter of the barrel 1, which makes the sliding of the handle 21 in the barrel 1 more stable and avoids the handle 21 from shaking during sliding or use.
[0027] Limiting blocks 111 are fixedly connected to both side walls of the vertical groove 11. The limiting blocks 111 are made of elastic rubber material and are arc-shaped. Their straight edges are fixed to the side walls of the vertical groove 11, while their arc-shaped edges face inwards into the vertical groove 11. When the slider passes the limiting block 111, the slider will squeeze the limiting block 111, causing the limiting block 111 to undergo elastic deformation.
[0028] The distance between the limiting block 111 and the bottom of the vertical groove 11 is set at the same height as the slider. That is, when the slider is slid to the bottom of the vertical groove 11, the limiting block 111 can limit the up and down sliding of the slider. At this time, the blade 22 extends out of the blade tube 1 to remove the lesion. Under the limiting action of the limiting block 111, the blade 22 can be more stable and avoid the problem of up and down shaking.
[0029] In summary, this invention, through the cooperation of two vertical grooves 11 and annular groove 12, allows the slider to slide and adjust within the two vertical grooves 11. When the slider slides upward along the vertical grooves 11, it drives the cutter body 2 upward, allowing the entire cutter body 2 to enter the blade cylinder 1, preventing it from being exposed. When the slider slides along the annular groove 12, it drives the axis of the cutter body 2 to rotate, thereby adjusting the angle of the cutter body 2. Since the annular groove 12 is located at the top of the vertical grooves 11, the cutter body 2 is entirely inside the blade cylinder 1 when adjusting its angle, thus preventing damage to healthy tissue from rotation. By setting a limiting block 111, the vertical movement of the slider is limited when it slides to the bottom of the vertical grooves 11, i.e., when the blade 22 extends for cutting, making the blade 22 more stable during lesion removal and preventing wobbling.
[0030] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
[0031] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0032] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0033] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.
[0034] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.
Claims
1. A surgical blade for uterine-preserving U-shaped surgery in adenomyosis, characterized in that: The device includes a blade cylinder (1) with its bottom end open. A cutter body (2) is coaxially sleeved inside the blade cylinder (1). Two vertical grooves (11) are provided on the side wall of the blade cylinder (1). The top ends of the two vertical grooves (11) are connected through an annular groove (12). A sliding cap (211) is connected to the outer wall of the cutter body (2) by a slider. The slider is slidably connected in the vertical groove (11). The sliding cap (211) is located on the outside of the blade cylinder (1).
2. The surgical blade for uterine-preserving surgery in adenomyosis according to claim 1, characterized in that: The cutter body (2) includes a handle (21), the slider is disposed on the outer wall of the handle (21), and a blade (22) is installed at the bottom end of the handle (21). The outer diameter of the handle (21) is the same as the inner diameter of the blade cylinder (1).
3. The surgical blade for uterine-preserving surgery in adenomyosis according to claim 1, characterized in that: Both sides of the vertical groove (11) are provided with elastic limiting blocks (111) to limit the slider.
4. The surgical blade for adenomyosis with uterine preservation surgery according to claim 3, characterized in that: The distance between the limiting block (111) and the bottom of the vertical groove (11) is set at the same height as the slider.
5. The surgical blade for adenomyosis with uterine preservation surgery according to claim 3, characterized in that: The limiting block (111) is set to an arc shape.
6. The surgical blade for uterine-preserving surgery in adenomyosis according to claim 1, characterized in that: The two vertical grooves (11) are symmetrically arranged about the axis of the cutter barrel (1).