Abdominal operation retractor

Abstract

The utility model discloses an abdominal operation retractor, and belongs to the technical field of medical instruments. The defects that in the prior art, a traditional retractor is large in machining, manufacturing and assembling difficulty and poor in locking stability, and the retraction effect and surgical operation are affected are overcome. The main structure of the device comprises a bed beam locking mechanism, a vertical rod, a T-shaped handle, an arc-shaped frame and a rope winder, the bed beam locking mechanism is installed on the vertical rod in a vertically movable mode, one end of the arc-shaped frame is installed at the top end of the vertical rod through the T-shaped handle, the rope winder is installed on the arc-shaped frame, and a steel wire rope and a steel wire rope locking piece used for locking the steel wire rope are arranged on the rope winder. And a hook for pulling the incision tissue is arranged at the tail end of the steel wire rope. The utility model is mainly used for pulling the incision tissue during the operation.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and more specifically, it relates to an abdominal surgical retractor. Background Technology

[0002] The retractor is installed on the operating table rail and is used to retract and expose various tissues and organs through the pulling action of the hook. Currently, most retractors on the market have a hook and rod structure. The hook needs to be adjusted and fixed by the connecting rod and locking device. The locking device and rod body have high precision requirements, many parts, and are difficult to process, manufacture and assemble. Moreover, the stability is poor when locking, which affects the retraction effect and surgical operation.

[0003] For example, Chinese utility model patent with authorization announcement number CN 201996598 U discloses an abdominal surgical retractor. It uses a ball-head joint mechanism between a rack-and-pinion amplitude-changing mechanism and a hook to enable the hook to be angled and easily adapt to surgical requirements. However, its shortcomings are that the installation angle between the bracket and the rack cannot be adjusted, and the hook cannot be pulled and controlled by tightening the steel wire rope. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and to provide an abdominal surgical retractor.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] An abdominal surgical retractor includes a bed beam locking mechanism, a vertical rod, a T-shaped handle, an arc-shaped frame, and a rope retractor. The bed beam locking mechanism is movably mounted on the vertical rod. One end of the arc-shaped frame is mounted on the top of the vertical rod via the T-shaped handle. The rope retractor is mounted on the arc-shaped frame and is equipped with a steel wire rope and a steel wire rope locking device for locking the steel wire rope. The end of the steel wire rope is equipped with a hook for pulling the incision tissue.

[0007] Preferably, the bed beam locking mechanism includes a base, on which a rectangular groove for mounting the bed beam locking mechanism on the operating table guide rail and a mounting hole for mounting on a vertical rod are provided. A lower movable block is provided below the rectangular groove. The lower movable block is connected to a screw rod through a pin, and the screw rod is threadedly connected to the lower end of the base.

[0008] Preferably, a side movable block is provided on the side of the mounting hole, the side movable block is connected to the screw rod by the screw two, and the screw rod is threadedly connected to the side of the base.

[0009] Preferably, the vertical rod includes a rod body, the side of which is provided with a vertical groove for cooperating with a side movable block, and the top of the rod body is provided with a circular tooth.

[0010] Preferably, the T-shaped handle includes a screw three and a force-applying rod disposed on the screw three, the lower end of the screw three being threadedly connected to the vertical rod.

[0011] Preferably, the arc-shaped frame is provided with a second circular tooth for mounting in conjunction with the first circular tooth.

[0012] Preferably, the rope winder includes a base, a winding wheel, and a U-shaped locking frame disposed at the lower end of the base. The winding wheel is installed on a circular through hole in the base, and the arc-shaped frame is installed in the U-shaped groove of the U-shaped locking frame and locked by locking screws. The wire rope is wound on the winding wheel, and the head end of the wire rope is fixed to the winding wheel by a screw, and the end end is connected to a hook by a pressure block.

[0013] Preferably, the wire rope locking component includes a one-way locking button and a ring of ratchet teeth on the bottom surface of the reel cylinder. The one-way locking button is installed in the side groove of the seat body by a pin screw. The tip of the one-way locking button presses on the ratchet teeth, and the one-way locking button is also connected to the seat body by a spring.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The base of the bed beam locking mechanism is an integral structure, which is small in size, light in weight, and compact in shape. In addition, it has no stress caused by welding, has high overall strength, is simple to process and assemble, and has a good locking effect.

[0016] 2. The base and vertical rod structure in the bed beam locking mechanism are stable, the installation angle of the arc frame and vertical rod is adjustable, the hook adopts the rope pulling method, which is lightweight, occupies little space, does not affect the surgical field of vision and operation, locks accurately and reliably, and has good retraction and exposure surgical effect. At the same time, one set of vertical rods, arc frames and rope winding components can be installed separately or multiple sets can be installed simultaneously on the operating table. The overall installation and layout are flexible and achieve an ideal retraction method.

[0017] 3. It can be installed and fixed on the operating table guide rail, allowing for quick installation and disassembly. It has a stable structure, is quick and precise to operate, and has a better effect on opening and exposing the surgical field, which can improve the convenience of surgery.

[0018] 4. This utility model uses a bed beam locking mechanism to fix the vertical rod and the arc frame on the operating table guide rail. By adjusting and rotating the rope winder to tighten the steel wire rope, the pull hook is pulled and controlled to achieve the traction of the incision tissue. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the bed beam locking mechanism of this utility model;

[0021] Figure 3 This is an internal sectional view of the bed beam locking mechanism in this utility model;

[0022] Figure 4 This is a schematic diagram of the vertical rod in this utility model;

[0023] Figure 5 This is a schematic diagram of the arc-shaped frame in this utility model;

[0024] Figure 6 This is an internal sectional view of the T-shaped handle in this utility model;

[0025] Figure 7 This is a schematic diagram of the rope winder in this utility model;

[0026] Figure 8 This is a front view of the rope winder in this utility model;

[0027] Figure 9 This is a right view of the rope winder in this utility model;

[0028] Figure 10 This is a schematic diagram of the structure of the base body in this utility model;

[0029] Figure 11 This is a schematic diagram of the winding reel in this utility model;

[0030] Figure 12 This is a schematic diagram of the one-way locking button in this utility model;

[0031] Figure 13 This is a schematic diagram of the internal structure of the wire rope locking component in this utility model;

[0032] Figure 14 This is a schematic diagram of the hook structure in this utility model.

[0033] In the diagram: 1. Bed beam locking mechanism; 11. Base; 111. Rectangular groove; 112. Mounting hole; 12. Lower movable block; 13. Pin; 14. Screw one; 15. Side movable block; 16. Screw two; 17. Screw two; 2. Vertical rod; 21. Rod body; 211. Vertical groove; 22. Circular tooth one; 3. T-shaped handle; 31. Force lever; 32. Screw three; 4. Arc frame; 41. Circular tooth two; 5. Rope winder; 51. Seat; 52. Winding wheel; 53. U-shaped locking frame; 54. Screw one; 55. One-way locking button; 56. Pin screw; 57. Racket; 58. Steel ball; 59. Steel wire rope; 510. Hook; 511. Spring; 512. Locking screw; 513. Pressure block; 6. Pull hook. Detailed Implementation

[0034] The present invention will be further described below through specific embodiments and in conjunction with the accompanying drawings.

[0035] Example 1:

[0036] like Figure 1 As shown, an abdominal surgical retractor includes a bed beam locking mechanism 1, a vertical rod 2, a T-shaped handle 3, an arc frame 4, and a rope retractor 5. The bed beam locking mechanism 1 is movably mounted on the vertical rod 2. One end of the arc frame 4 is mounted on the top of the vertical rod 2 via the T-shaped handle 3. The rope retractor 5 is mounted on the arc frame 4. The rope retractor 5 is provided with a steel wire rope 59 and a steel wire rope locking device for locking the steel wire rope 59. The end of the steel wire rope 59 is provided with a hook 510 for pulling the incision tissue.

[0037] Example 2:

[0038] like Figure 2-3 As shown, an abdominal surgical retractor differs from Embodiment 1 in that the bed beam locking mechanism 1 includes a base 11. The base 11 has a rectangular groove 111 for mounting the bed beam locking mechanism 1 on the operating table guide rail and a mounting hole 112 for mounting on the vertical rod 2. A lower movable block 12 is provided below the rectangular groove 111. The lower movable block 12 is connected to a screw 14 via a pin 13, and the screw 14 is threadedly connected to the lower end of the base 11. A side movable block 15 is provided on the side of the mounting hole 112. The side movable block 15 is connected to a screw 17 via a screw 16, and the screw 17 is threadedly connected to the side of the base 11.

[0039] In this embodiment, the base 11 is a cuboid with an opening. A rectangular groove 111 is formed inside the right side, and a circular mounting hole 112 runs vertically through the top. Threaded holes are present on the lower part and right side. A handle is connected to the tail of the screw 14. The lower movable block 12 moves up and down via the threaded rotation of the screw 14 and the base 11. The side of the base 11 restricts the lower movable block 12, allowing it to move up and down only along the left side of the base 11. The side movable block 15 is square, with a clamping arc surface inside. It moves left and right via the threaded rotation of the screw 17 and the base 11. The inner surface of the base 11 is also rectangular, slightly larger than the side movable block 15, allowing it to move left and right only along the interior of the base 11. Therefore, the base 11 in the bed beam locking mechanism 1 is an integral structure, small in size and light in weight, with a compact shape. Furthermore, it is free from welding stress, has high overall strength, is simple to process and assemble, and provides good locking effect.

[0040] like Figure 4 As shown, the vertical rod 2 includes a rod body 21, the side of the rod body 21 is provided with a vertical groove 211 for cooperating with the side movable block 15, and the top of the rod body 21 is provided with a circular tooth 22.

[0041] like Figure 5 As shown, the arc-shaped frame 4 is provided with a circular tooth 41 for mounting in conjunction with the circular tooth 22. The arc-shaped frame 4 is arc-shaped with a rectangular cross-section, and has multiple small arc-shaped grooves in the middle. Circular teeth 41 are machined on both the left and right sides. The circular tooth 41 has a circular through hole in its center, with a diameter slightly larger than the diameter of the screw 32 of the T-shaped handle 3. The arc-shaped frame 4 can be designed to any suitable length and curvature according to actual clinical needs.

[0042] like Figure 6 As shown, the T-shaped handle 3 includes a screw 32 and a force-applying rod 31 disposed on the screw 32. The lower end of the screw 32 is threadedly connected to the vertical rod 2.

[0043] like Figure 7-12 As shown, the rope winder 5 includes a base 51, a winding wheel 52, and a U-shaped locking frame 53 located at the lower end of the base 51. The winding wheel 52 is installed on the circular through hole of the base 51, and the arc-shaped frame 4 is installed in the U-shaped groove of the U-shaped locking frame 53 and locked by a locking screw 512. After the arc-shaped frame 4 is positioned, the locking screw 512 is tightened to press the arc-shaped frame 4, thus fixing the arc-shaped frame 4 and the U-shaped locking frame 53. The wire rope 59 is wound on the winding wheel 52, and the head end of the wire rope 59 is fixed to the winding wheel 52 by a screw 54, and the end is connected to the hook 510 by a pressure block 513. Figure 13 As shown, the wire rope locking component includes a one-way locking button 55 and a ring of ratchet teeth 57 disposed on the cylindrical bottom surface of the reel 52. The one-way locking button 55 is mounted in the side groove of the base 51 by a pin screw 56. The tip of the one-way locking button 55 presses against the ratchet teeth 57, and the one-way locking button 55 is also connected to the base 51 by a spring 511.

[0044] In this embodiment, the front of the base 51 has a circular through hole with an inner diameter slightly larger than the outer diameter of the reel 52. The side has an open groove for accommodating the tightening and anti-loosening movement of the wire rope 59. There are two rows of arc-shaped grooves with a semi-circular cross-section for holding the steel balls 58. The main structure of the reel 52 is cylindrical, with one side being flat and the other side having a handle. The cylinder has two rows of arc-shaped grooves with a semi-circular cross-section, and their relative positions correspond to the two rows of arc-shaped grooves of the base 51. When assembled, the two form two annular channels to accommodate the steel balls 58 making circular motions within the arc-shaped grooves. The base 51, the reel 52, and the steel balls 58 together constitute the principle structure of a rolling bearing. The support structure of the two rows of bearings makes the structure of the reel 52 more smooth and stable when it rotates. A ring of ratchet teeth 57 is located near the bottom of the cylinder of the reel 52. This ratchet teeth work in conjunction with a one-way locking button 55 to prevent reverse rotation. The one-way locking button 55 is mounted in a side groove of the base 51 by a pin screw 56. A spring 511 is located at the bottom of the groove, supporting the one-way locking button 55. The spring force causes the one-way locking button 55 to press against the cylindrical ratchet teeth 57, causing the rack to rotate in a step-by-step, one-way manner when the handle is turned, tightening the wire rope 59. The end of the wire rope 59 is fixed to the cylinder of the reel 52 by a screw 54 and wound around the cylinder several times. The end of the wire rope 59 is connected to a hook 510 via a pressure block 513. Pressing the one-way locking button 55 disengages its tip from the ratchet teeth 57, allowing the reel 52 to rotate in the opposite direction and release the wire rope 59.

[0045] like Figure 14 As shown, the pull hook 6 is used to pull tissue. It is arc-shaped and can be designed into various widths and sizes according to clinical surgical needs. It also has a hollow structure to reduce weight. The small hole at the tail is used to connect and hang the hook 510.

[0046] The working principle of this utility model is as follows:

[0047] This utility model utilizes a bed beam locking mechanism 1 to fix the vertical rod 2 and the arc frame 4 onto the operating table guide rail. By adjusting and rotating the rope winder 5 to tighten the steel wire rope 59, the hook 510 is pulled and controlled, thereby achieving the pulling of the incision tissue.

[0048] The installation process of this utility model is as follows:

[0049] When installing the bed beam locking mechanism 1, first rotate the bottom screw 14 counterclockwise. When the screw 14 rotates, it will drive the lower movable block 12 to move downward. At this time, the opening of the base 11 will gradually become larger. The rectangular groove 111 on the base 11 of the device can be inserted into the metal guide rail on the side of the operating table and placed vertically. Then rotate the screw 14 clockwise to make the lower movable block 12 move upward. During this process, the opening of the base 11 gradually becomes smaller. When the lower movable block 12 contacts the bed rail, continue to rotate the handwheel forcefully. The lower movable block 12 will eventually clamp the guide rail from both the top and bottom directions together with the fixed end. The lower part of the bed rail is pressed and the reaction force is borne by the base 11 and transmitted to the screw 14 by the lower movable block 12. In this way, the bed beam locking mechanism 1 is installed and fixed on the operating table.

[0050] When installing the vertical rod 2, make the vertical groove 211 of the vertical rod 2 match the protrusion of the base 11, insert the vertical rod 2 into the mounting hole 112 of the base 11, adjust the height of the vertical rod 2, and then rotate the screw 17 clockwise. The side movable block 15 moves to the left through the screw 17 and the thread rotation of the base 11, pressing the vertical rod 2 tightly.

[0051] Install the arc frame 4, adjust the position and angle of the arc frame 4, align the circular tooth 41 on one side of the arc frame 4 with the circular tooth 22 on the top of the vertical rod 2, insert the screw 32 of the T-shaped handle 3 into the center hole of the ring tooth, rotate the T-shaped handle 3, and install and fix the arc frame 4 on the vertical rod 2.

[0052] When installing the rope reel 5, align the opening of the U-shaped locking bracket 53 at the bottom of the rope reel 5 with the arc-shaped bracket 4 and adjust it to a suitable position so that it is aligned with the arc-shaped groove. Then, rotate the locking screw 512 clockwise to fix the rope reel 5 and the arc-shaped bracket 4 together. At the same time, press the one-way locking button 55 and rotate the handle of the reel 52 counterclockwise to release the wire rope 59.

[0053] When installing the hook 6, place the head of the hook 6 at the part to be pulled, and place the hook 510 at the end of the wire rope 59 into the hole at the tail of the hook 6. When it is necessary to adjust the pulling of the hook 6, the handle of the reel 52 can be turned clockwise to tighten the wire rope 59 and achieve the pulling effect of the hook 6.

Claims

1. An abdominal surgical retractor, characterized in that: The device includes a bed beam locking mechanism (1), a vertical rod (2), a T-shaped handle (3), an arc frame (4), and a rope winder (5). The bed beam locking mechanism (1) is movably mounted on the vertical rod (2). One end of the arc frame (4) is mounted on the top of the vertical rod (2) via the T-shaped handle (3). The rope winder (5) is mounted on the arc frame (4). The rope winder (5) is equipped with a wire rope (59) and a wire rope locking device for locking the wire rope (59). The end of the wire rope (59) is equipped with a hook (510) for pulling the incision tissue.

2. The abdominal surgical retractor according to claim 1, characterized in that: The bed beam locking mechanism (1) includes a base (11). The base (11) is provided with a rectangular groove (111) for mounting the bed beam locking mechanism (1) on the operating table guide rail and a mounting hole (112) for mounting on the vertical rod (2). A lower movable block (12) is provided below the rectangular groove (111). The lower movable block (12) is connected to the screw (14) through a pin (13), and the screw (14) is threaded to the lower end of the base (11).

3. The abdominal surgical retractor according to claim 2, characterized in that: A side movable block (15) is provided on the side of the mounting hole (112). The side movable block (15) is connected to the screw rod (17) by the screw rod (16), and the screw rod (17) is threadedly connected to the side of the base (11).

4. The abdominal surgical retractor according to claim 3, characterized in that: The vertical rod (2) includes a rod body (21), the side of the rod body (21) is provided with a vertical groove (211) for cooperating with the side movable block (15), and the top of the rod body (21) is provided with a circular tooth (22).

5. The abdominal surgical retractor according to claim 4, characterized in that: The T-shaped handle (3) includes a screw three (32) and a force-adding rod (31) disposed on the screw three (32). The lower end of the screw three (32) is threadedly connected to the vertical rod (2).

6. The abdominal surgical retractor according to claim 4, characterized in that: The arc-shaped frame (4) is provided with a circular tooth (41) for installation in conjunction with the circular tooth (22).

7. The abdominal surgical retractor according to any one of claims 1-6, characterized in that: The rope winder (5) includes a base (51), a winding wheel (52), and a U-shaped locking frame (53) located at the lower end of the base (51). The winding wheel (52) is installed on the circular through hole of the base (51), and the arc frame (4) is installed in the U-shaped groove of the U-shaped locking frame (53) and locked by a locking screw (512). The wire rope (59) is wound on the winding wheel (52), and the head end of the wire rope (59) is fixed to the winding wheel (52) by a screw (54), and the end is connected to the hook (510) by a pressure block (513).

8. The abdominal surgical retractor according to claim 7, characterized in that: The wire rope locking component includes a one-way locking button (55) and a ring of ratchet teeth (57) on the cylindrical bottom surface of the reel (52). The one-way locking button (55) is installed in the side groove of the seat (51) by a pin screw (56). The tip of the one-way locking button (55) presses on the ratchet teeth (57), and the one-way locking button (55) is also connected to the seat (51) by a spring (511).

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