Thoracic surgery dilator

Abstract

The utility model discloses a thoracic surgery dilator which comprises a guide rail, a straight plate is arranged in the middle of one side of the guide rail, two symmetrically-distributed sliding blocks are connected to the guide rail in a sliding mode, a pushing block is connected to the straight plate in a sliding mode, and connecting rods are connected to the two sides of the upper surface of the pushing block in a rotating mode through rotating shafts. The end, away from the pushing block, of the connecting rod is rotationally connected with the upper surface of a sliding block through a rotating shaft, a moving plate is fixedly connected to the upper surface of the sliding block, and a first supporting plate is arranged on the side, close to the sliding block, of the bottom of the moving plate. The screw rod is rotated by rotating the rotating block, and the threaded block drives the second supporting plate and the third supporting plate to move in the length direction of the movable plate under the limiting action of the limiting opening, so that the third supporting plate is close to or far away from the first supporting plate, and a surgical incision can be opened in the front-back direction.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to a thoracic surgical expander. Background Technology

[0002] Currently, in the process of thoracic surgery, it is necessary to cut open the skin, subcutaneous tissue and muscle layer of the patient's chest and enter the thoracic cavity through the narrow intercostal space to complete the surgery. The above tissues need to be manually pulled and expanded, which is time-consuming and laborious for the operators and causes inconvenience to medical staff.

[0003] In addition, most existing surgical expanders only expand the surgical incision in the left and right directions, resulting in a narrower surgical incision in the front and back directions, which affects the smooth progress of the surgery. Utility Model Content

[0004] The purpose of this invention is to provide a thoracic surgical expander to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows: A thoracic surgical expander includes a guide rail, a straight plate is provided in the middle of one side of the guide rail, two symmetrically distributed sliders are slidably connected on the guide rail, a push block is slidably connected on the straight plate, and connecting rods are rotatably connected to both sides of the upper surface of the push block via rotating shafts. The end of the connecting rod away from the push block is rotatably connected to the upper surface of the slider via a rotating shaft, and a movable plate is fixedly connected to the upper surface of the slider. A first support plate is provided on the bottom of the movable plate near the slider, and a movable second support plate is provided on the other side of the bottom of the movable plate. A third support plate is fixedly connected to one side of the second support plate, and a driving structure for driving the second support plate to move is provided on the upper surface of the movable plate.

[0006] Preferably, the straight plate is perpendicular to the guide rail, the movable plate is perpendicular to the guide rail, and the third support plate is perpendicular to the second support plate.

[0007] Preferably, a lower convex plate is provided in the middle part of the upper surface of the straight plate along its length direction, and an upper convex plate is provided above the lower convex plate and distributed parallel to it. The two ends of the upper convex plate are fixedly connected to the two ends of the straight plate by fixing blocks, and the upper and lower ends of the pushing block are provided with grooves respectively corresponding to the upper convex plate and the lower convex plate. The grooves are slidably connected to the upper convex plate and the lower convex plate respectively.

[0008] Preferably, the upper surface of the upper convex plate has an elongated hole in the middle part along its length, and the upper surface of the push block has a stud in the middle part, with the top of the stud extending above the elongated hole and threadedly connected to a knob.

[0009] Preferably, the driving structure includes a lead screw, and each of the two upper surfaces of the moving plate is provided with a vertical block. The lead screw is disposed between the two vertical blocks. A threaded block is fixedly connected between the top ends of the second support plate and the third support plate. A limiting opening is provided in the middle part of the upper surface of the moving plate along its length direction. The top end of the threaded block extends above the limiting opening and is threadedly connected to the lead screw.

[0010] Preferably, the lead screw is rotatably connected to the upright block via a bearing, and one end of the lead screw extends to the outside of the upright block and is provided with a rotating block.

[0011] The thoracic surgical expander of this invention has the following advantages:

[0012] 1. This utility model, by rotating the rotating block, causes the lead screw to rotate. Under the limiting action of the limiting port, the threaded block drives the second and third support plates to move along the length direction of the moving plate. This allows the third support plate to move closer to or further away from the first support plate, thereby opening the surgical incision in the front and back directions. In conjunction with the two moving plates on the left and right, it can open the surgical incision in four directions: front, back, left, and right, greatly increasing the incision area, improving the surgical field of vision, and making it more conducive to the smooth progress of the operation.

[0013] 2. The present invention features corresponding grooves, which are slidably connected to the upper and lower convex plates respectively. Through the cooperation between the lower and upper convex plates, the pushing block is positioned between the lower and upper convex plates, thereby limiting the movement of the pushing block and making its movement more stable and reliable. By pushing the pushing block, the pushing block moves closer to the guide rail. Under the action of the connecting rod, the two sliders move away from each other, thereby moving the two moving plates away from each other. This allows the first and second support plates to open the surgical incision in the left and right directions. Furthermore, the pushing block mechanism allows the two moving plates to separate quickly, enabling rapid opening of the surgical incision and improving efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 for Figure 1 A structural diagram from another perspective;

[0017] Figure 3 This is a schematic diagram of the structure of the movable plate in this utility model.

[0018] The markings in the diagram are as follows: 1. Guide rail; 2. Straight plate; 3. Slider; 4. Push block; 5. Connecting rod; 6. Moving plate; 7. Vertical block; 8. Lead screw; 9. First support plate; 10. Second support plate; 11. Third support plate; 12. Lower convex plate; 13. Upper convex plate; 14. Oblong hole; 15. Groove; 16. Stud; 17. Limiting port; 18. Threaded block. Detailed Implementation

[0019] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0020] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0023] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0024] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a thoracic surgical expander.

[0025] like Figure 1-3 As shown, this utility model discloses a thoracic surgical expander, including a guide rail 1. A straight plate 2 is provided in the middle of one side of the guide rail 1, and the straight plate 2 is perpendicular to the guide rail 1. Two symmetrically distributed sliders 3 are slidably connected to the guide rail 1. A push block 4 is slidably connected to the straight plate 2. Both sides of the upper surface of the push block 4 are rotatably connected to the connecting rods 5 via rotating shafts. The end of the connecting rod 5 away from the push block 4 is rotatably connected to the upper surface of the slider 3 via a rotating shaft. A movable plate 6 is fixedly connected to the upper surface of the slider 3, and the movable plate 6 is perpendicular to the guide rail 1. A lower convex plate 12 is provided in the middle of the upper surface of the straight plate 2 along its length direction. An upper convex plate 13 is provided above the lower convex plate 12 and is parallel to it. The two ends of the upper convex plate 13 are fixedly connected to the two ends of the straight plate 2 by fixing blocks. The upper and lower ends of the push block 4 are also fixedly connected to the straight plate 2. Each plate is provided with grooves 15 corresponding to the upper convex plate 13 and the lower convex plate 12, respectively. The grooves 15 are slidably connected to the upper convex plate 13 and the lower convex plate 12. Through the cooperation between the lower convex plate 12 and the upper convex plate 13, the pushing block 4 is positioned between the lower convex plate 12 and the upper convex plate 13, thereby limiting the movement of the pushing block 4 and making the movement of the pushing block 4 more stable and reliable. By pushing the pushing block 4, the pushing block 4 moves closer to the guide rail 1. Under the action of the connecting rod 5, the two sliders 3 move away from each other, thereby making the two moving plates 6 move away from each other. This allows the first support plate 9 and the second support plate 10 to open the surgical incision in the left and right directions. Moreover, by pushing the pushing block 4, the two moving plates 6 can separate quickly, which can quickly open the surgical incision and improve efficiency. An elongated hole 14 is provided in the middle of the upper surface of the upper convex plate 13 along its length direction. A stud 16 is provided in the middle of the upper surface of the push block 4. The top of the stud 16 extends above the elongated hole 14 and is threadedly connected to a knob. Through the cooperation between the stud 16, the elongated hole 14 and the knob, the push block 4 can be locked and fixed. After adjusting the distance between the two moving plates 6, the friction between them and the upper convex plate 13 is increased by tightening the knob, which can lock and fix the push block 4. The operation is simple and convenient.

[0026] A first support plate 9 is provided on the bottom side of the movable plate 6 near the slider 3, and a movable second support plate 10 is provided on the other side of the bottom of the movable plate 6. A third support plate 11 is fixedly connected to one side of the second support plate 10. The third support plate 11 is perpendicular to the second support plate 10, and a driving structure for driving the second support plate 10 to move is provided on the upper surface of the movable plate 6. The driving structure includes a lead screw 8. A vertical block 7 is provided on the upper surface of both ends of the movable plate 6, and the lead screw 8 is located between the two vertical blocks 7. A threaded block 18 is fixedly connected between the top ends of the second support plate 10 and the third support plate 11. A limit opening 17 is provided in the middle part of the upper surface of the movable plate 6 along its length direction, and the top end of the threaded block 18 extends to the limit opening. Above the positioning port 17 and threadedly connected to the lead screw 8, the lead screw 8 is rotatably connected to the vertical block 7 via a bearing, and one end of the lead screw 8 extends to the outside of the vertical block 7 and is provided with a rotating block. By rotating the rotating block, the lead screw 8 rotates. Under the limiting action of the positioning port 17, the threaded block 18 drives the second support plate 10 and the third support plate 11 to move along the length direction of the moving plate 6, so that the third support plate 11 moves closer to or away from the first support plate 9, thereby opening the surgical incision in the front and back directions. With the cooperation of the two moving plates 6 on the left and right, the surgical incision can be opened in four directions: front, back, left, and right, which greatly increases the incision area, improves the surgical field of vision, and is more conducive to the smooth progress of the operation.

[0027] The working principle of this type of thoracic surgical expander is as follows: When in use, push the push block 4 to move the two moving plates 6 away from each other, thereby expanding the surgical incision in the left and right directions. When the surgical field of view is narrow in the front and back directions, the rotating block can be rotated to make the lead screw 8 rotate, thereby moving the second support plate 10 and the third support plate 11 away from the first support plate 9, thereby expanding the surgical incision in the front and back directions and thus expanding the surgical field of view.

[0028] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A thoracic surgical expander, characterized in that: Includes a guide rail (1), a straight plate (2) is provided in the middle part of one side of the guide rail (1), two symmetrically distributed sliders (3) are slidably connected on the guide rail (1), a push block (4) is slidably connected on the straight plate (2), and a connecting rod (5) is rotatably connected to both sides of the upper surface of the push block (4) through a rotating shaft. The end of the connecting rod (5) away from the push block (4) is rotatably connected to the upper surface of the slider (3) through a rotating shaft, and a moving plate (6) is fixedly connected to the upper surface of the slider (3). A first support plate (9) is provided on the bottom side of the moving plate (6) near the slider (3), and a movable second support plate (10) is provided on the other side of the bottom of the moving plate (6). A third support plate (11) is fixedly connected to one side of the second support plate (10), and a driving structure for driving the second support plate (10) to move is provided on the upper surface of the moving plate (6).

2. The thoracic surgical expander according to claim 1, characterized in that: The straight plate (2) is perpendicular to the guide rail (1), the moving plate (6) is perpendicular to the guide rail (1), and the third support plate (11) is perpendicular to the second support plate (10).

3. The thoracic surgical expander according to claim 1, characterized in that: A lower convex plate (12) is provided in the middle part of the upper surface of the straight plate (2) along its length direction. An upper convex plate (13) is provided above the lower convex plate (12) and is distributed parallel to it. The two ends of the upper convex plate (13) are fixedly connected to the two ends of the straight plate (2) by fixing blocks. The upper and lower ends of the pushing block (4) are provided with grooves (15) respectively corresponding to the upper convex plate (13) and the lower convex plate (12). The grooves (15) are slidably connected to the upper convex plate (13) and the lower convex plate (12) respectively.

4. A thoracic surgical expander according to claim 3, characterized in that: The upper surface of the upper protruding plate (13) has an elongated hole (14) in the middle part along its length direction. The upper surface of the push block (4) has a stud (16) in the middle part. The top of the stud (16) extends above the elongated hole (14) and is threaded with a knob.

5. A thoracic surgical expander according to claim 1, characterized in that: The driving structure includes a lead screw (8), and two vertical blocks (7) are provided on the upper surfaces of the moving plate (6). The lead screw (8) is located between the two vertical blocks (7). A threaded block (18) is fixedly connected between the top ends of the second support plate (10) and the third support plate (11). A limiting port (17) is provided in the middle part of the upper surface of the moving plate (6) along its length direction. The top end of the threaded block (18) extends above the limiting port (17) and is threadedly connected to the lead screw (8).

6. A thoracic surgical expander according to claim 5, characterized in that: The lead screw (8) is rotatably connected to the vertical block (7) via a bearing, and one end of the lead screw (8) extends to the outside of the vertical block (7) and is provided with a rotating block.

Images