Distraction device

Abstract

The utility model discloses a distraction device which effectively solves the problem that the distraction length of existing distraction pliers cannot be adjusted. Comprising a rectangular main body shell, moving blocks are arranged on the front side and the rear side in the main body shell respectively, the two moving blocks can slide oppositely or oppositely, a left-right axial fixing column is arranged at the left end of each moving block, and a plurality of arc-shaped opening blocks which are evenly distributed in the left-right direction are connected to the fixing columns in a sliding mode; the device is simple in structure, novel in conception, convenient to use and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of surgical treatment auxiliary instruments, in particular to a spreading device. Background Art

[0002] When patients with leg fractures undergo surgery, they need to use a scalpel to cut open the skin and muscles at the fracture site to expose the broken bones, and then perform operations such as fixing the broken bones with steel plates. In order to prevent obstruction to the operation of medical staff, the skin and muscles at the surgical incision need to be stretched to better expose the surgical field of view. In actual operations, stretching forceps are often used for stretching, but stretching forceps have the following defects when used: the length of the stretching forceps is fixed, so the length of the stretched surgical incision is fixed, and it cannot be adjusted, and it cannot be used for stretching surgical incisions of different lengths. Utility Model Content

[0003] In view of the above situation, in order to make up for the deficiencies of the prior art, the purpose of the utility model is to provide a spreading device, which effectively solves the problem that the existing spreading pliers cannot adjust the spreading length.

[0004] The technical solution is that the utility model includes a rectangular main body shell, and movable blocks are respectively provided on the front and rear sides of the main body shell. The two movable blocks can slide relative to or away from each other. A left end of the movable block is provided with a left and right axial fixed column, and a plurality of arc-shaped expansion blocks evenly distributed along the left and right directions are slidably connected to the fixed column.

[0005] Compared with the prior art, the beneficial effects of the utility model are: it can realize the expansion of the patient's surgical incision during surgery to expose the surgical field of view, which is convenient for medical staff to perform relevant operations on the fracture site. At the same time, the positions of multiple expansion blocks can be quickly adjusted, which is suitable for surgical incisions of different lengths and has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is the main axonometric drawing of the utility model.

[0007] Figure 2 It is a full-section right-view axonometric drawing of the utility model.

[0008] Figure 3 It is a full-section left-view axonometric drawing of the utility model.

[0009] Figure 4 It is a full-section main axonometric drawing of the utility model.

[0010] Figure 5 This utility model Figure 3 A is an enlarged view of the middle image.

[0011] Figure 6 This utility model Figure 4 Enlarged view of B. DETAILED DESCRIPTION

[0012] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0013] Depend on Figures 1 to 6 It includes a rectangular main shell 1, and movable blocks 2 are respectively provided on the front and rear sides of the main shell 1. The two movable blocks 2 can slide relative to or away from each other. A left end of the movable block 2 is provided with a left and right axial fixed column 3, and a plurality of arc-shaped expansion blocks 4 evenly distributed along the left and right directions are slidably connected to the fixed column 3.

[0014] In order to facilitate the fixing and limiting of the expansion block 4, a plurality of limiting holes 5 are evenly distributed in the left-right direction and in the vertical axis are provided at the upper end of the fixing column 3, and a receiving groove 6 is provided in the expansion block 4 and located above the fixing column 3. A rectangular frame 7 that can slide up and down is provided in the receiving groove 6, and a limiting column 8 that can be inserted into the limiting hole 5 is provided at the lower end of the rectangular frame 7.

[0015] In order to move the rectangular frame 7 up and down, the rectangular frame 7 is slidably connected to the expansion block 4. The outer end of the expansion block 4 is slidably connected to a pressure column 9 in the front-to-back axial direction and inserted into the rectangular frame 7 on its corresponding side. The upper end of the pressure column 9 is hingedly connected to the rectangular frame 7 via a rocker rod 10.

[0016] In order to facilitate the resetting of the rectangular frame 7 , the upper end of the rectangular frame 7 is connected to the expansion block 4 via a compression spring 11 .

[0017] In order to enable the two moving blocks 2 to slide relative to or away from each other, the moving block 2 is slidably connected to the main shell 1, and the front end of the main shell 1 is rotatably connected to a stud 12 with a front and rear axial direction and threadedly connected to the moving block 2. The threads on the front and rear sides of the stud 12 have opposite rotation directions, and a knob is coaxially provided at the front end of the stud 12.

[0018] In order to facilitate the pressing of the pressure column 9 , the free end of the pressure column 9 passes through the support block 4 and is provided with a pressure plate 13 , and a spring is sleeved on the pressure column 9 .

[0019] In order to prevent the patient's muscle tissue from being crushed, a silicone layer 14 is provided on the arc surface of the expansion block 4 .

[0020] When the utility model is in use, the main body shell 1 is first placed on one side of the surgical opening, and then adjusted according to the length of the surgical opening, the pressure plate 13 is pressed inwardly, and the pressure plate 13 drives the pressure column 9 to move inwardly, and the pressure column 9 drives the rectangular frame 7 to move upward via the swing rod 10, and the rectangular frame 7 drives the limiting column 8 to move upward. After moving upward for a distance, the limiting column 8 is withdrawn from the limiting hole 5 to release the fixed limit of the expansion block 4. At this time, the expansion block 4 is moved to the left, so that the distance between the expansion block 4 at the far left end and the expansion block 4 at the far right end is the same as the length of the surgical opening, and then the expansion distance at this time is the length of the surgical opening, and the lower end of the expansion block 4 is inserted into both sides of the surgical opening. At this time, the silicone layer 14 can protect the muscles of the surgical opening and prevent the muscles at the surgical opening of the patient from being crushed;

[0021] When the movement is completed, the corresponding pressure plate 13 is released. Due to the restoring force of the spring, the pressure plate 13 drives the pressure column 9 to move outward to release the squeezing of the rectangular frame 7. At this time, due to the downward restoring force of the compression spring 11, the limit column 8 is driven to move downward. After moving downward for a distance, it is inserted into the corresponding limit hole 5 to achieve fixed limit to prevent the expansion block 4 from sliding during surgery. Then turn the knob, and the knob drives the stud 12 to rotate clockwise. Since the threads on the front and rear sides of the stud 12 have opposite rotation directions, the two moving blocks 2 are driven to slide back to back. The two moving blocks 2 drive the fixed columns 3 on both sides to move back to back, and then drive multiple expansion blocks 4 to expand the patient's surgical incision. At this time, the operation can be performed. After the operation is completed, the stud 12 is rotated in the opposite direction to release the expansion.

[0022] Compared with the prior art, the utility model has the following beneficial effects: the fixed columns, expansion blocks, limit columns, limit holes, etc. are provided, which can realize expansion of the patient's surgical incision during surgery, expose the surgical field of view, and facilitate medical staff to perform relevant operations on the fracture site. At the same time, the positions of multiple expansion blocks can be quickly adjusted, which is suitable for surgical incisions of different lengths and has strong applicability. The structure is simple, the concept is novel, it is easy to use, and it is highly practical.

Claims

1. A spreading device, comprising a rectangular main body shell (1), characterized in that: A moving block (2) is provided on the front and rear sides of the main body shell (1), and the two moving blocks (2) can slide relative to or away from each other. A left end of the moving block (2) is provided with a left-right axial fixed column (3), and a plurality of arc-shaped expansion blocks (4) evenly distributed along the left-right direction are slidably connected to the fixed column (3).

2. A spreading device according to claim 1, characterized in that: The upper end of the fixed column (3) is provided with a plurality of limit holes (5) evenly distributed in the left-right direction and in the vertical axial direction; the support block (4) is provided with a receiving groove (6) located above the fixed column (3); a rectangular frame (7) that can slide up and down is provided in the receiving groove (6); and a limit column (8) that can be inserted into the limit hole (5) is provided at the lower end of the rectangular frame (7).

3. A spreading device according to claim 2, characterized in that: The rectangular frame (7) is slidably connected to the expansion block (4), and the outer end of the expansion block (4) is slidably connected to a pressure column (9) which is inserted into the rectangular frame (7) on the corresponding side thereof in the front-rear axial direction, and the upper end of the pressure column (9) is hingedly connected to the rectangular frame (7) via a swing rod (10).

4. A spreading device according to claim 2, characterized in that: The upper end of the rectangular frame (7) is connected to the expansion block (4) via a compression spring (11).

5. The expansion device according to claim 1, characterized in that: The moving block (2) is slidably connected to the main body shell (1), and the front end of the main body shell (1) is rotatably connected to a stud (12) which is axially connected to the front and rear and threadedly connected to the moving block (2). The threads on the front and rear sides of the stud (12) have opposite rotation directions, and a knob is coaxially arranged at the front end of the stud (12).

6. The expansion device according to claim 3, characterized in that: The free end of the pressure column (9) passes through the support block (4) and is provided with a pressure plate (13), and a spring is sleeved on the pressure column (9).

7. The expansion device according to claim 1, characterized in that: A silica gel layer (14) is provided on the arc-shaped surface of the expansion block (4).

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