Universal incision retractor for thoracic surgery

Abstract

The utility model belongs to the field of medical surgical tools, and discloses a universal incision retractor for thoracic surgery. Comprising a supporting base ring, the supporting base ring is slidably sleeved with a plurality of rack seats, racks parallel to the upper surface of the supporting base ring are inserted into the rack seats, and one ends of the racks extend out of the rack seats and face the circle center of the supporting base ring; a dial wheel meshed with the rack is also arranged in the rack seat, so that the rack is driven to translate in the rack seat by rotating the dial wheel; a drag hook used for opening the notch is hung at the end, facing the circle center of the supporting base ring, of the rack, and the drag hook is rotationally connected with the rack. According to the multi-directional retractor, in the minimally invasive thoracic surgery process, dragging damage to a minimally invasive incision can be reduced, and the function of multi-directional retraction adjustment is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of medical surgical tools, and in particular relates to a universal incision retractor used for thoracic surgery. Background Art

[0002] Thoracic surgery is a medical specialty that focuses on the diagnosis and treatment of organs within the chest cavity. Some thoracic surgeries require thoracotomy. In order to fully expose the internal space of the chest cavity, a retractor is usually used to open or retract the sternum on both sides.

[0003] At present, common retractors are caliper-shaped, similar to scissors or slide rails. Retractors are evolving from pure scissors to head-changing and head-dropping scissors, in order to continuously adapt to the needs of medical staff. However, scissor-type retractors generally have the limitation of a single retraction direction. Existing caliper-type retractors are constantly enriched in design details, adding functions such as lighting, recording, retraction fine-tuning and dimension, but the gear transmission structure drives one of the expansion plates to slide relative to the other expansion plate. This structure still has disadvantages, and the expansion force on the two sides of the sternum is prone to differences, so it requires a high level of operation for medical staff. At present, there are also some ring-frame retractors, which have increased retraction directions and dimensions compared with the above-mentioned retractors. However, the common types of ring-frame retractors either have fixed hook positions, or their angles and positions are affected by the square frame and have certain limitations in adjustment, lack flexibility, and are prone to cause damage to the tissues around the incision during retraction, which is not convenient for micro-incision surgery.

[0004] In summary, whether scissors, calipers or the current ring-shaped retractors, they are not easy to flexibly adapt to the incision and cannot effectively reduce the injury caused by minimally invasive incisions. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a universal incision retractor for thoracic surgery to reduce the pulling damage to the minimally invasive incision during minimally invasive thoracic surgery and realize the function of multi-directional retraction adjustment.

[0006] The above-mentioned purpose of the utility model is achieved through the following technical solutions:

[0007] A universal incision retractor for thoracic surgery comprises a supporting base ring, on which a plurality of rack seats are slidably mounted, a rack parallel to the upper surface of the supporting base ring being inserted in the rack seat, one end of the rack extending out of the rack seat and facing the center of the supporting base ring; a thumbwheel meshing with the rack is also provided in the rack seat, so that the rack can be driven to translate in the rack seat by rotating the thumbwheel; a retractor for opening an incision is suspended at one end of the rack facing the center of the supporting base ring, and the retractor is rotatably connected to the rack.

[0008] Furthermore, the support base ring is in a closed ring shape, and a plurality of pin holes are provided on its outer wall; a through hole a which can be connected with the pin hole is provided on the outer wall of the rack seat; fixing pins are inserted into the through hole a and the pin hole to fix the position of the rack seat on the support base ring.

[0009] Furthermore, the dial wheel is vertically inserted into the rack seat at the top of the rack seat, and includes a rotating shaft and a gear connected to the bottom end of the rotating shaft. The gear is meshed with the rack inside the rack seat, and the top end of the rotating shaft passes through the top of the rack seat and is connected to the crank.

[0010] Furthermore, the crank handle is universally connected to the top of the rotating shaft of the dial wheel via a cross pin.

[0011] Furthermore, a through hole b is formed at one end of the rack facing the center of the supporting base ring, a hanging bolt is rotatably connected in the through hole b, and the draw hook is connected to the hanging bolt.

[0012] Furthermore, the draw hook is an inverted L-shaped structure consisting of an arc-shaped hook body and a short handle, and a screw hole is provided on the short handle for threaded connection with a hanging bolt.

[0013] Furthermore, the retractor hook is a narrow hook or a wide hook. When the retractor hook is pulled open along the length direction of the incision, the narrow retractor hook is selected, and when the retractor hook is pulled open along the width direction of the incision, the wide retractor hook is selected.

[0014] Furthermore, the width of the narrow hook is 1-4 cm, and the width of the wide hook is 3-9 cm.

[0015] Furthermore, the narrow hook and the wide hook are 3-8 cm in height.

[0016] Compared with the prior art solutions, the utility model has the following beneficial effects:

[0017] 1. Several rack seats are set on the supporting base ring. The number of rack seats can be increased or decreased according to the size of the incision, so as to increase or decrease the pulling points;

[0018] 2. The hook is rotatably connected to the rack, which enables the hook to rotate adaptively during the retraction process, adjust the output force, and avoid hard damage to tissues such as ribs and nerves;

[0019] 3. The retractor can be selected as narrow or wide hook according to the situation, which facilitates minimally invasive thoracic surgery.

[0020] 4. Through the application of the utility model, manpower can be saved, the strength and direction of the pulling incision can be adjusted as needed, the incision can be fully exposed and minimally invasive, the surgical efficiency can be improved, and the patient can feel better after the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a plan view of the utility model;

[0022] Figure 2 It is a three-dimensional schematic diagram of the utility model;

[0023] In the figure, 1 is a hanging bolt; 2 is a rack; 3 is a crank handle; 4 is a supporting base ring; 5 is a rack seat; 6 is a pulley; 7 is a narrow hook; 8 is a wide hook; 9 is a fixing pin; and 10 is a pin hole. DETAILED DESCRIPTION

[0024] The present invention is described in detail below through specific embodiments, but the protection scope of the present invention is not limited thereto.

[0025] Embodiment 1:

[0026] A universal incision retractor for thoracic surgery, characterized by comprising: a hanging bolt 1, a rack 2, a crank 3, a supporting base ring 4, a rack seat 5, a dial wheel 6, a narrow hook 7, a wide hook 8, a fixing pin 9, and a pin hole 10.

[0027] The support base ring 4 is in a closed ring shape, and a plurality of pin holes 10 are opened along the normal direction on the outer wall surface of the ring-shaped rectangular cross section;

[0028] The rack seat 5 is formed by buckling a concave groove and a cover plate, and is sleeved on the support base ring 4. Two through holes a are also opened in the same position as the pin hole 10 of the support base ring 4. The fixing pin 9 passes through the through hole a and is inserted into the pin hole 10 of the support base ring 4 to fix the position of the rack seat 5 on the support base ring 4. A bar hole is provided between the two through holes a, and the bar hole allows the rack 2 to pass through the rack seat 5 parallel to the plane of the support base ring 4. The thumbwheel 6 is vertically inserted on the top wall of the support base ring 4 parallel to the bar hole;

[0029] The thumbwheel 6 is an axisymmetric rotating body composed of a gear and a rotating shaft. The gear meshes with the teeth of the rack 2 in the bar hole. The top of the rotating shaft passes through the top of the rack seat 5 and is connected to the crank 3 through a cross universal joint of a pin shaft. The thumbwheel 6 can be rotated by the crank 3 to drive the rack 2 to translate in the rack seat 5.

[0030] The end of the rack 2 facing the center of the support base ring 4 is provided with a through hole b along the central axis direction of the support base ring 4, and the hanging bolt 1 passes through the through hole b to hinge and suspend the narrow hook 7 or the wide hook 8 with the rack 2;

[0031] The narrow hook 7 or the wide hook 8 is an inverted L-shaped hook consisting of an arc-shaped hook body and a short handle, and the short handle has a screw hole for threaded connection with the hanging bolt 1;

[0032] The width of the arc-shaped hook body of the narrow hook 7 is set at 1-4 cm, and can be set to four specifications: 1.0 cm, 2.0 cm, 3.0 cm, and 4.0 cm; the width of the arc-shaped hook body of the wide hook 8 is set at 3-9 cm, and can be set to five specifications: 3.0 cm, 4.0 cm, 5.0 cm, 7.0 cm, and 9.0 cm. The height of the narrow hook 7 and the wide hook 8 can be set to several levels between 3.0 cm and 8.0 cm, and can be selected according to the needs of the operation.

[0033] By pulling the fixing pin 9 out of the pin hole 10, the rack seat 5 can be slid to adjust its circumferential position on the supporting base ring 4. According to the size of the chest incision, the number of rack seats 5 on the supporting base ring 4 can be as needed, usually 3 to 5 are arranged; by rotating the dial wheel 6 through the crank 3 and then rotating through the gear meshing, the rack 2 can be translated in the rack seat 5, and the distance from the narrow hook 7 or wide hook 8 hanging at the end to the center of the supporting base ring 4 can be adjusted, so as to achieve the purpose of opening the incision.

[0034] The direction of the incision determines whether each rack 2 is equipped with a narrow hook 7 or a wide hook 8. The narrow hook 7 is suitable for use in the position where the incision is pulled open along the length direction, and the wide hook 8 is suitable for use in the position where the incision is pulled open along the width direction. When the incision is pulled open, the retractor can adaptively rotate around the axis of the hanging bolt 1 according to the size of the resistance and adjust the output force. Therefore, it can better protect the nerves around the incision and avoid damage to tissues such as the ribs due to excessive local force during retraction.

[0035] Embodiment 2:

[0036] The diameter of the support base ring 4 can be set in three levels between 35cm and 55cm to suit incisions of different sizes; the original pin hole 10 on the outer edge of the support base ring 4 is changed to a gear shape, and the fixing pin 9 is set to a shape similar to the rack 2. Under this setting, the fixing pins 9 on each rack seat 5 can be reduced from the original 2 to 1.

[0037] The above-mentioned embodiments are only preferred embodiments of the present invention, but not all feasible embodiments of the present invention. For those skilled in the art, any obvious changes made to the present invention without departing from the principle and spirit of the present invention should be considered to be included in the scope of protection of the claims of the present invention.

Claims

1. A universal incision retractor for thoracic surgery, characterized in that: The invention comprises a supporting base ring (4), on which a plurality of rack seats (5) are slidably mounted, a rack (2) parallel to the upper surface of the supporting base ring (4) is inserted in the rack seat (5), one end of the rack (2) extends out of the rack seat (5) and faces the center of the supporting base ring (4); a thumbwheel (6) meshing with the rack (2) is also provided in the rack seat (5), so that the rack (2) can be driven to translate in the rack seat (5) by rotating the thumbwheel (6); a draw hook for opening an incision is suspended at one end of the rack (2) facing the center of the supporting base ring (4), and the draw hook is rotatably connected to the rack (2).

2. A universal incision retractor for thoracic surgery according to claim 1, characterized in that: The support base ring (4) is in the shape of a closed ring, and a plurality of pin holes (10) are provided on its outer wall; a through hole a which can be connected to the pin hole (10) is provided on the outer wall of the rack seat (5); and fixing pins (9) are inserted into the through hole a and the pin hole (10) to fix the position of the rack seat (5) on the support base ring (4).

3. The universal incision retractor for thoracic surgery according to claim 1, characterized in that: The thumbwheel (6) is vertically inserted into the rack seat (5) at the top of the rack seat (5), and comprises a rotating shaft and a gear connected to the bottom end of the rotating shaft. The gear meshes with the rack (2) inside the rack seat (5), and the top end of the rotating shaft passes through the top of the rack seat (5) and is connected to the crank (3).

4. The universal incision retractor for thoracic surgery according to claim 3, characterized in that: The crank handle (3) is universally connected to the top of the rotating shaft of the dial wheel (6) via a pin cross.

5. The universal incision retractor for thoracic surgery according to claim 1, characterized in that: A through hole b is formed at one end of the rack (2) facing the center of the supporting base ring (4), a hanging bolt (1) is rotatably connected in the through hole b, and the draw hook is connected to the hanging bolt (1).

6. The universal incision retractor for thoracic surgery according to claim 5, characterized in that: The draw hook is an inverted L-shaped structure consisting of an arc-shaped hook body and a short handle, and a screw hole is provided on the short handle for threaded connection with a hanging bolt (1).

7. The universal incision retractor for thoracic surgery according to claim 6, characterized in that: The draw hook is a narrow hook (7) or a wide hook (8). When the draw hook is pulled open along the length of the incision, the narrow hook (7) is selected, and when the draw hook is pulled open along the width of the incision, the wide hook (8) is selected.

8. The universal incision retractor for thoracic surgery according to claim 7, characterized in that: The width of the narrow hook (7) is 1-4 cm, and the width of the wide hook (8) is 3-9 cm.

9. The universal incision retractor for thoracic surgery according to claim 8, characterized in that: The height of the narrow hook (7) and the wide hook (8) is 3-8 cm.

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