Tissue expander convenient for lymph node cleaning

Abstract

The utility model discloses a tissue dilator convenient for lymph node cleaning, which relates to the technical field of medical auxiliary devices, and comprises a dismounting mechanism, the dismounting mechanism comprises a main body, the outer wall of the main body is fixedly connected with two connecting plates, the two connecting plates are both hinged with a hinge plate I, and the hinge plate II is hinged with a hinge plate II. And expansion plates are arranged on the sides, away from each other, of the two first hinge plates. According to the utility model, the expansion plate can be dismounted and mounted, so that the equipment maintenance efficiency is greatly improved, maintenance personnel can quickly clean, maintain and replace parts, the equipment failure risk is reduced, the service life is prolonged, convenience can be provided for flexible application in different operation scenes, and the practicability is high. A doctor can quickly change the matched expansion plate according to actual requirements, the accuracy and adaptability of surgical operation are improved, and meanwhile, when the equipment is transported and stored, the equipment is convenient to disassemble, space occupation is reduced, and transportation difficulty and cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, and in particular to a tissue expander that facilitates lymph node dissection. Background Technology

[0002] Lymph nodes are a key component of the lymphatic system, widely distributed in the neck, armpits, groin, and other parts of the human body. They are like "immune outposts," bean-shaped and varying in size. When the body is invaded by bacteria or viruses, lymphocytes proliferate in the lymph nodes, causing them to swell. By examining the size, texture, and mobility of lymph nodes, we can assist in the diagnosis of diseases and make them of great significance for health assessment.

[0003] When performing lymph node dissection, a tissue expander is needed to widen the patient's incision to facilitate further work by the doctor. However, some existing tissue expanders do not allow for easy disassembly of the expansion plate. As a result, if the expansion plate malfunctions, the inconvenience of disassembly can hinder repair work and may even render the entire tissue expander unusable. Utility Model Content

[0004] The purpose of this invention is to provide a tissue expander that facilitates lymph node dissection, thereby solving at least one of the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tissue expander for convenient lymph node dissection, comprising a disassembly mechanism, the disassembly mechanism comprising a main body, two connecting plates fixedly connected to the outer wall of the main body, each of the two connecting plates being hinged with a hinge plate, an expansion plate being provided on the side of each of the two hinge plates that is far apart from each other, an installation block being fixedly connected to the side of each of the two expansion plates that is close to the corresponding hinge plate, an installation groove being provided on the side of each of the two hinge plates that is far apart from each other, and the two installation blocks being slidably connected to the corresponding installation groove, a toothed column being slidably connected to the top of the main body, and the bottom end of the toothed column extending into the interior of the main body and slidably connected to the main body;

[0006] An expansion mechanism is provided, wherein an I-shaped plate is slidably connected to the top of the main body, the bottom of the I-shaped plate extends into the interior of the main body and is slidably connected to the main body, and an adjustment plate is fixedly connected to the top of the toothed column and the top of the I-shaped plate.

[0007] Preferably, the disassembly mechanism further includes sliding grooves both located inside the two hinge plates, and the inner walls of the two sliding grooves are slidably connected with positioning pins.

[0008] Preferably, one end of each of the two positioning pins extends into the interior of the corresponding mounting block and is slidably connected to the corresponding mounting block, and the other end of each of the two positioning pins extends to the exterior of the corresponding hinge plate.

[0009] Preferably, the disassembly mechanism further includes a limiting plate that is fixedly connected to both of the two positioning pins, and a spring is wound around both of the positioning pins.

[0010] Preferably, the disassembly mechanism further includes L-shaped plates that are fixedly connected to the ends of the two positioning pins away from the corresponding hinge plates, and both L-shaped plates are threadedly connected to the corresponding hinge plates with bolts.

[0011] Preferably, the expansion mechanism further includes a rotating shaft rotatably connected to the inner wall of the main body, and a gear is fixedly connected to the rotating shaft, the gear meshing with a gear post.

[0012] Preferably, the expansion mechanism further includes a worm gear fixedly connected to the rotating shaft, a worm rotatably connected to the inner wall of the connecting plate, the worm meshing with the worm gear, the front end of the worm extending to the outside of the main body, and a knob fixedly connected to the front end of the worm.

[0013] Preferably, the expansion mechanism further includes two hinge plates, one of which is hinged to the adjustment plate, and a handle is fixedly connected to the bottom of the main body.

[0014] The beneficial effects of this utility model are as follows:

[0015] In this utility model:

[0016] 1. First, loosen and remove the bolts. Once the bolts are removed, the L-shaped plate is no longer fixed. The spring returns to its original position and contracts under its own elasticity, thereby moving the limiting plate. When the limiting plate moves, it moves the positioning pin, allowing the expansion plate to be disassembled and installed. This significantly improves equipment maintenance efficiency, enabling maintenance personnel to quickly clean, maintain, and replace parts, reducing the risk of equipment failure and extending its service life. It also provides convenience for flexible application in different surgical scenarios. Doctors can quickly replace the expansion plate according to actual needs, improving the accuracy and adaptability of surgical operations. At the same time, it is easy to disassemble during equipment transportation and storage, reducing space occupation and transportation difficulty and cost.

[0017] 2. Rotating the knob drives the worm gear, which in turn drives the worm wheel, which in turn drives the shaft, which in turn drives the gear, which in turn moves the gear column, which in turn moves the adjusting plate, which in turn moves the second hinge plate, which in turn moves the first hinge plate, which in turn moves the expansion plate. This series of transmission processes initiated by rotating the knob allows for easy operation, requiring only simple hand movements to control the expansion plate. The expansion plate expands the patient's incision, meeting the precise expansion requirements in different situations. The device also has a self-locking function, providing a continuous and reliable operating space for surgery, preventing the movement of the expansion plate from affecting the surgical field or causing additional damage to the patient's incision. Attached Figure Description

[0018] Figure 1 A schematic diagram of a preferred embodiment of the tissue expander for convenient lymph node dissection provided by this utility model;

[0019] Figure 2 A structural diagram of the main body;

[0020] Figure 3 This is a schematic diagram of the adjustment plate structure;

[0021] Figure 4 This is a schematic diagram of the expansion plate structure;

[0022] Figure 5 This is a schematic diagram of the chute structure.

[0023] In the diagram: 1. Disassembly mechanism; 101. Main body; 102. Connecting plate; 103. Hinge plate one; 104. Expansion plate; 105. Mounting block; 106. Mounting groove; 107. Slide groove; 108. Positioning pin; 109. Limiting plate; 110. Spring; 111. L-shaped plate; 112. Bolt; 2. Expansion mechanism; 201. Gear column; 202. I-shaped plate; 203. Adjusting plate; 204. Rotating shaft; 205. Gear; 206. Worm gear; 207. Worm; 208. Knob; 209. Hinge plate two; 210. Handle. Detailed Implementation

[0024] 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.

[0025] This utility model provides, for example Figure 1-5 The tissue expander shown is for convenient lymph node dissection and includes a disassembly mechanism 1. The disassembly mechanism 1 includes a main body 101. Two connecting plates 102 are fixedly connected to the outer wall of the main body 101. Each connecting plate 102 is hinged with a hinge plate 103. An expansion plate 104 is provided on the side of each hinge plate 103 that is far apart from each other. An installation block 105 is fixedly connected to the side of each expansion plate 104 that is close to the corresponding hinge plate 103. An installation groove 106 is provided on the side of each hinge plate 103 that is far apart from each other. The two installation blocks 105 are slidably connected to the corresponding installation groove 106. A toothed column 201 is slidably connected to the top of the main body 101. The bottom end of the toothed column 201 extends into the interior of the main body 101 and is slidably connected to the main body 101. An expansion mechanism 2 is also included. An I-shaped plate 202 is slidably connected to the top of the main body 101. The bottom end of the I-shaped plate 202 extends into the interior of the main body 101 and is slidably connected to the expansion mechanism 2. The disassembly mechanism 1 is slidably connected to the main body 101. The top end of the toothed column 201 is fixedly connected to the top of the I-shaped plate 202 with an adjusting plate 203. The disassembly mechanism 1 also includes a sliding groove 107 that is opened inside the two hinge plates 103. The inner walls of the two sliding grooves 107 are slidably connected with positioning pins 108. One end of the two positioning pins 108 extends into the interior of the corresponding mounting block 105 and is slidably connected to the corresponding mounting block 105. The other end of the two positioning pins 108 extends to the outside of the corresponding hinge plates 103. The disassembly mechanism 1 also includes a limiting plate 109 that is fixedly connected to the two positioning pins 108. Springs 110 are wound around the two positioning pins 108. The disassembly mechanism 1 also includes an L-shaped plate 111 that is fixedly connected to the end of the two positioning pins 108 away from the corresponding hinge plates 103. The two L-shaped plates 111 are threadedly connected to the corresponding hinge plates 103 with bolts 112.

[0026] First, loosen and remove bolt 112. After bolt 112 is removed, L-shaped plate 111 is no longer fixed. Spring 110 returns to its original position and contracts under its own elasticity, thereby moving limit plate 109. When limit plate 109 moves, it drives positioning pin 108 to move, thus allowing expansion plate 104 to be disassembled and installed. This greatly improves equipment maintenance efficiency, enabling maintenance personnel to quickly clean, maintain, and replace parts, reducing the risk of equipment failure and extending its service life. It also provides convenience for flexible application in different surgical scenarios. Doctors can quickly replace the appropriate expansion plate according to actual needs, improving the accuracy and adaptability of surgical operations. At the same time, it is easy to disassemble during equipment transportation and storage, reducing space occupation and transportation difficulty and cost.

[0027] The expansion mechanism 2 also includes a rotating shaft 204 rotatably connected to the inner wall of the main body 101, a gear 205 fixedly connected to the rotating shaft 204, the gear 205 meshing with the gear post 201, the expansion mechanism 2 also includes a worm gear 206 fixedly connected to the rotating shaft 204, a worm 207 rotatably connected to the inner wall of the connecting plate 102, the worm 207 meshing with the worm gear 206, the front end of the worm 207 extending to the outside of the main body 101, a knob 208 fixedly connected to the front end of the worm 207, the expansion mechanism 2 also includes a second hinge plate 209, both of which are hinged to the adjustment plate 203, and a handle 210 fixedly connected to the bottom of the main body 101;

[0028] Rotating knob 208 drives worm gear 207, which in turn drives worm wheel 206, which in turn drives shaft 204, which in turn drives gear 205, which in turn drives toothed column 201, which in turn drives adjusting plate 203, which in turn drives hinge plate 209, which in turn drives hinge plate 103, which in turn drives expansion plate 104. This series of transmission processes initiated by rotating the knob allows for easy operation, requiring only simple hand movements to control the expansion plate. The expansion plate 104 expands the patient's incision, meeting the precise expansion requirements in different situations. The device also features a self-locking function, providing a continuous and reliable operating space to prevent the movement of the expansion plate from affecting the surgical field or causing additional damage to the patient's incision.

[0029] The working principle of the tissue expander for convenient lymph node dissection provided by this utility model is as follows: When using the device, medical staff insert two expansion plates 104 into the incision, and then expand the incision by means of the expansion plates 104. When it is necessary to disassemble the expansion plates 104, first loosen the bolts 112 and remove them. After the bolts 112 are removed, the L-shaped plate 111 is no longer fixed, and the spring 110 returns to its original position and contracts under its own elasticity, thereby driving the limiting plate 109 to move. When the limiting plate 109 moves, it drives the positioning pin 108 to move. When the positioning pin 108 moves, the end that slides with the mounting block 105 disengages from the mounting block 105, thus no longer limiting the mounting block 105. Then, the expansion plates 104 are moved away from the mounting block 105. The main body 101 moves in a certain direction, causing the mounting block 105 to disengage from the mounting groove 106, allowing the expansion plate 104 to be disassembled for easy replacement or thorough cleaning. When installing the expansion plate 104, the mounting block 105 is slid into the mounting groove 106, and then the L-shaped plate 111 is moved downwards. As the L-shaped plate 111 moves downwards, it drives the positioning pin 108 to move. As the positioning pin 108 moves, it drives the limiting plate 109 to move. As the limiting plate 109 moves, it stretches the spring 110. When the positioning pin 108 moves, the end away from the L-shaped plate 111 slides into the mounting block 105 to limit the mounting block 105. Finally, the L-shaped plate 111 is fixed with bolts 112, thus installing the expansion plate 104.

[0030] Rotating knob 208 causes the worm gear 207 to rotate, which in turn drives the worm wheel 206. The worm wheel 206 then drives the shaft 204, which in turn drives the gear 205. The gear 205 then moves the gear spur 201, which in turn moves the adjusting plate 203. The adjusting plate 203 then moves the I-beam plate 202, which guides the movement of the adjusting plate 203, ensuring that the adjusting plate 203 can only move... The up-and-down movement of the adjusting plate 203 causes the second hinge plate 209 to move, which in turn causes the first hinge plate 103 to move, which in turn causes the expansion plate 104 to move. This movement of the expansion plate 104 expands the patient's incision. Meanwhile, because the worm gear 206 and worm 207 have a self-locking function, the entire transmission system can remain in its current state, thus preventing the expansion plate 104 from moving again due to accidents, which could lead to over-expansion or under-expansion.

[0031] Compared with related technologies, the tissue expander for convenient lymph node dissection provided by this utility model has the following beneficial effects:

[0032] This invention provides a tissue expander for convenient lymph node dissection. When the device is needed, first loosen and remove the bolt 112. After the bolt 112 is removed, the L-shaped plate 111 is no longer fixed, and the spring 110 returns to its original position and contracts under its own elasticity, thereby moving the limiting plate 109. When the limiting plate 109 moves, it moves the positioning pin 108, which allows the expansion plate 104 to be disassembled and installed. This greatly improves the efficiency of equipment maintenance, enabling maintenance personnel to quickly clean, maintain, and replace parts, reducing the risk of equipment failure, extending service life, and providing convenience for flexible application in different surgical scenarios. Doctors can quickly replace the expansion plate according to actual needs, improving the accuracy and adaptability of surgical operations. At the same time, the device is easy to disassemble during transportation and storage, reducing space occupation and transportation difficulty and cost.

[0033] Rotating knob 208 drives worm gear 207, which in turn drives worm wheel 206, which in turn drives shaft 204, which in turn drives gear 205, which in turn drives toothed column 201, which in turn drives adjusting plate 203, which in turn drives hinge plate 209, which in turn drives hinge plate 103, which in turn drives expansion plate 104. This series of transmission processes initiated by rotating the knob allows for easy operation, requiring only simple hand movements to control the expansion plate. The expansion plate 104 expands the patient's incision, meeting the precise expansion requirements in different situations. The device also features a self-locking function, providing a continuous and reliable operating space to prevent the movement of the expansion plate from affecting the surgical field or causing additional damage to the patient's incision.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tissue expander for convenient lymph node dissection, comprising a disassembly mechanism, the disassembly mechanism comprising a main body, two connecting plates fixedly connected to the outer wall of the main body, each of the two connecting plates having a hinge plate hinged thereto, an expansion plate provided on the side of each of the two hinge plates that is far apart from each other, an mounting block fixedly connected to the side of each of the two expansion plates near the corresponding hinge plate, an mounting groove provided on the side of each of the two hinge plates that is far apart from each other, and the two mounting blocks slidably connected to the corresponding mounting groove, a toothed column slidably connected to the top of the main body, the bottom end of the toothed column extending into the interior of the main body and slidably connected to the main body, characterized in that: An expansion mechanism is provided, wherein an I-shaped plate is slidably connected to the top of the main body, the bottom of the I-shaped plate extends into the interior of the main body and is slidably connected to the main body, and an adjustment plate is fixedly connected to the top of the toothed column and the top of the I-shaped plate.

2. The tissue expander for convenient lymph node dissection according to claim 1, characterized in that: The disassembly mechanism also includes sliding grooves that are both opened inside the two hinge plates, and the inner walls of the two sliding grooves are slidably connected with positioning pins.

3. A tissue expander for convenient lymph node dissection according to claim 2, characterized in that: One end of each of the two positioning pins extends into the interior of the corresponding mounting block and is slidably connected to the corresponding mounting block, and the other end of each of the two positioning pins extends to the exterior of the corresponding hinge plate.

4. A tissue expander for convenient lymph node dissection according to claim 3, characterized in that: The disassembly mechanism also includes a limiting plate that is fixedly connected to the two positioning pins, and a spring is wound around each of the two positioning pins.

5. A tissue expander for convenient lymph node dissection according to claim 4, characterized in that: The disassembly mechanism also includes L-shaped plates that are fixedly connected to the ends of the two positioning pins away from the corresponding hinge plates, and both L-shaped plates are threadedly connected to the corresponding hinge plates with bolts.

6. A tissue expander for convenient lymph node dissection according to claim 5, characterized in that: The expansion mechanism also includes a rotating shaft rotatably connected to the inner wall of the main body, on which a gear is fixedly connected, and the gear meshes with a gear post.

7. A tissue expander for convenient lymph node dissection according to claim 6, characterized in that: The expansion mechanism also includes a worm gear fixedly connected to the rotating shaft, a worm rotatably connected to the inner wall of the connecting plate, the worm meshing with the worm gear, the front end of the worm extending to the outside of the main body, and a knob fixedly connected to the front end of the worm.

8. A tissue expander for convenient lymph node dissection according to claim 7, characterized in that: The expansion mechanism also includes two hinge plates, one of which is hinged to the adjustment plate, and the bottom of the main body is fixedly connected to a handle.

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