Surgical retractor

Abstract

The application discloses a surgical retractor which is composed of a rotating shaft, a sleeve and a retractor. The rotating shaft is connected through the sleeve and is provided with symmetrical rotating parts and an opening. The sleeve is divided into two layers, the inner layer is provided with an opening, and the inner wall of the outer layer is provided with first sawteeth. The retractor is connected with a hook head provided with a sensor through a connecting rod, the front end of the hook head is an arc-shaped elastic bending handle, the lower part of the retractor is provided with a display screen and a handle, and the display screen can display real-time tension. The fan-shaped third fixed block in the middle of the retractor is connected with the side part through a hinge, the second sawteeth on the third fixed block are engaged with the first sawteeth of the sleeve, the angle adjustment and locking are realized, and the third fixed block is connected with a spring and a second connecting rod. The mechanism below the retractor is connected with a third connecting rod provided with a protrusion through an elastic part, the third connecting rod is linked with the second connecting rod. The fifth fixed block at the bottom of the retractor is provided with a plurality of ball head rotating devices, the fourth connecting rod and the sixth fixed block connected with the fifth fixed block can fix the position of the third connecting rod when being pulled down. The device supports multidirectional adjustment, real-time force feedback and stable fixation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, and in particular, to a surgical retractor. BACKGROUND

[0002] Surgical retractors are indispensable tools in surgical operations, used to retract the tissues or organs around the incision to expose and maintain a clear surgical field, creating the necessary space for surgical operations. Their performance is directly related to the smoothness of the operation, the precision of the operation, and the potential damage to the patient's tissues.

[0003] Currently, the surgical retractors widely used in clinical practice mainly fall into two categories: manual retractors and mechanical arm fixed retractors. Manual retractors completely rely on the hand-held operation of surgical assistants or doctors, and the position, direction and force of retraction are controlled by subjective feeling. This approach has significant limitations: first, the force is difficult to quantify, relying entirely on personal experience, which can easily lead to insufficient exposure of the surgical field due to insufficient retraction force, or compression injury, ischemia or tearing of the retracted tissues (such as nerves, blood vessels, muscles, etc.) due to excessive retraction force, increasing the risk of postoperative complications. Second, during long surgical procedures, the assistant's arm may tremble or the retraction force may become unstable due to fatigue, causing the surgical field to shift and affecting the fine operation of the lead surgeon. Third, manual retractors require the continuous occupation of a medical staff, reducing the human resource utilization efficiency of the surgical team.

[0004] To address the stability problem of manual retractors, some retractor devices assisted by mechanical arms or fixed frames have emerged. Such devices usually install the retractor arm on an adjustable mechanical support structure, and fix the position through knobs or locks. Although such devices free up manpower and can provide a relatively stable spatial position, they still have obvious defects. On the one hand, most of these devices lack precise force feedback and display mechanisms, so the operator cannot know the actual retraction force value applied to the tissue during adjustment, and the adjustment process is still blind, and the risk of tissue damage has not been fundamentally solved. In addition, the fixation mechanisms of existing devices focus on the locking of spatial position, and ignore how to ensure that the retraction force value remains constant during the operation after setting a safe and effective retraction force, rather than simply locking the geometric position.

[0005] In summary, the surgical retractor in the prior art is disjointed in the key links of precise force control, force state visualization, intraoperative flexible adjustment and stable maintenance. Therefore, there is an urgent need for a new type of surgical retractor, which can realize real-time monitoring, display and controllable adjustment of the pulling force, minimize tissue damage caused by improper pulling while providing sufficient exposure of the surgical field; it should have sufficient operation freedom to facilitate adaptive adjustment during surgery; more importantly, it can automatically or under simple operation to maintain the ideal pulling force value after the operator sets it, thereby ensuring the continuous stability of the surgical field and improving the safety and efficiency of the operation. SUMMARY

[0006] The main purpose of the present application is to provide a surgical retractor to solve the problem that the surgical retractor in the prior art cannot display the force to avoid causing greater harm to human tissue.

[0007] In order to achieve the above-mentioned purpose, the present application provides a surgical retractor, which specifically comprises: a rotating shaft, the rotating shaft comprising a rotating node and a rotating part connected outside the rotating node and symmetrically arranged; a sleeve connected with the rotating part, the sleeve comprising a second sleeve arranged outside and a third sleeve arranged inside, the inner surface of the second sleeve being provided with first sawteeth; a retractor, the retractor passing through the rotating shaft and the inside of the sleeve, the retractor comprising: a main body arranged inside the third sleeve, the main body being symmetrically provided with second fixed blocks; a first connecting rod arranged at the top of the main body; a sensor connected with the first connecting rod; a hook head connected with the first connecting rod; a display screen arranged at the bottom of the main body; a handle arranged at the bottom of the display screen; a third fixed block hingedly connected with the second fixed block, the third fixed block being provided with second sawteeth on the side surface, the second sawteeth being engaged with the first sawteeth, and the third fixed block being connected with a second connecting rod at the bottom; a fourth fixed block arranged at the lower part of the main body, the fourth fixed block being symmetrically provided with a first elastic part and a third connecting rod on the left and right sides, and the third connecting rod being connected with the second connecting rod; and a fifth fixed block arranged at the lower part of the main body.

[0008] A fourth fixed block arranged at the lower part of the main body, the fourth fixed block being symmetrically provided with a first elastic part and a third connecting rod on the left and right sides, and the third connecting rod being connected with the second connecting rod; and a fifth fixed block arranged at the lower part of the main body.

[0009] Further, the rotating node is a "cross" shape, and a first opening hole is arranged in the middle and penetrates the upper and lower end faces, and a cylindrical first fixing block is arranged around the rotating node, the rotating part includes a circular arc-shaped rotating block, a second opening hole is arranged in the middle of the rotating block and penetrates the rotating block, the first opening hole and the second opening hole have the same diameter, the hook passes through the first opening hole and the second opening hole, first sleeves are arranged at both ends of the rotating block, the first sleeves are matched with the first fixing block, the first sleeves can rotate around the first fixing block with obvious damping feeling, and the rotating part is driven to rotate around the rotating node to adjust the angle.

[0010] Further, the sleeve is connected and fixed with the rotating part, the second sleeve is a hollow cylinder, the third sleeve is a hollow cylinder, the hook body part can move up and down in the third sleeve, the third sleeve has the same diameter with the second opening hole, the third sleeve has a circular third opening hole arranged at the upper and lower parts, and the third sleeve has a rectangular fourth opening hole arranged symmetrically at the side edges, so that the second fixing block on the body can extend out and move up and down.

[0011] Further, the body is a cylinder, and has the same diameter with the third opening hole, so that the body can be stretched out through the third opening hole, and the second fixing block is a cuboid, and the second fixing block extends out from the fourth opening hole.

[0012] Further, the first connecting rod is an elastic part, so that the first connecting rod can be stretched, the hook head has a curved handle with a first elastic body arranged uniformly on the inner surface and in an arc shape, so that the hook head can reduce damage to soft tissues, and the sensor and the display screen are connected through a line, so that the force on the hook head can be displayed on the display in real time.

[0013] Further, the third fixing block is in a fan shape, and is hingedly connected with the second fixing block through a first rotating shaft, and the second fixing block rotates up and down around the first rotating shaft, the third fixing block has a first spring arranged at the upper part and connected with the body, the first spring drives the third fixing block to move upward, and the second connecting rod has a cylinder penetrating the third fixing block at the upper part and has two cylinders arranged symmetrically at the lower part, so that the second connecting rod can drive the third fixing block to move downward.

[0014] Further, the fourth fixing block is fixedly arranged on the body, the first elastic part is arranged between the fourth fixing block and the third connecting rod, the third connecting rod has a triangular block protruding at the head, and the third connecting rod can be pulled to move downward, so as to drive the second connecting rod to move downward.

[0015] Further, the fifth fixed block is provided with four recesses symmetrically, and the fifth fixed block is further provided with a second rotating shaft, the head of the second rotating shaft is provided with a ball head, the ball head is placed in the recess and can rotate, and the second rotating shaft is correspondingly connected with a fourth connecting rod.

[0016] Further, the ball head is consistent with the recess in shape and number, the other end of the fourth connecting rod away from the second rotating shaft is provided with a sixth fixed block between two fourth connecting rods, the sixth fixed block is a cylinder, and the sixth fixed block can be pulled and placed on the third connecting rod to realize the fixation of the third connecting rod.

[0017] The technical scheme of the application is applied to a surgical retractor, which comprises a rotating shaft, a sleeve and a retractor. The rotating shaft comprises a rotating node and rotating parts symmetrically sleeved on the rotating node through the sleeve, and the rotating node and the rotating parts are provided with holes with the same diameter. The sleeve is arranged at the lower part of the rotating shaft and connected with the lower rotating part. The sleeve comprises an external second sleeve and an internal third sleeve. The inner surface of the second sleeve is provided with first sawteeth, and the upper and lower surfaces of the third sleeve are provided with third holes and rectangular fourth holes symmetrically arranged on the side surface. The retractor passes through the holes on the rotating shaft and the sleeve. The retractor comprises a main body, second fixed blocks symmetrically arranged on the two sides of the main body, a first connecting rod connected with the upper part of the main body, a sensor connected with the upper part of the first connecting rod, a hook head connected with the other end of the sensor, a curved handle with first elastic bodies in the shape of arcs uniformly arranged on the inner surface of the head of the hook head, a display screen connected with the sensor through a line to display the tension on the hook head, a handle arranged at the bottom of the main body to pull the retractor, third fixed blocks symmetrically arranged in the shape of a fan in the middle of the main body, first rotating shafts hingedly connected with the second fixed blocks, second sawteeth arranged on the fan surface of the third fixed blocks, first springs arranged on the upper surface of the third fixed blocks and connected with the main body, second connecting rods arranged on the lower surface of the third fixed blocks, fourth fixed blocks arranged at the lower part of the main body, first elastic parts symmetrically arranged on the two sides of the fourth fixed blocks, third connecting rods arranged at the one end of the first elastic parts away from the fourth fixed blocks, triangular blocks protruding from the head of the third connecting rods, and second rotating shafts connected with the third connecting rods. The fourth connecting rods are correspondingly connected with the second rotating shafts, and the sixth fixed blocks in the shape of a cylinder are arranged on the fourth connecting rods and can be placed on the third connecting rods to realize the fixation of the third connecting rods in the pulled-down state.

[0018] Therefore, the technical scheme of the present application can solve the problem that the surgical retractor in the prior art cannot display the force size, thereby avoiding greater damage to human tissues. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which form a part of the present description, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments illustrated in the drawings are provided to explain the present application and, do not limit the present application. In the drawings:

[0020] Figure 1 A schematic view of the rotating shaft, sleeve and retractor combination is shown;

[0021] Figure 2 A cross-sectional view of the rotating shaft, sleeve and retractor combination is shown;

[0022] Figure 3 A cross-sectional view of the rotating shaft is shown;

[0023] Figure 4 A cross-sectional view of the sleeve is shown;

[0024] Figure 5 A schematic view of the retractor is shown;

[0025] Wherein, the above drawings include the following reference signs: 1, rotating shaft; 10, rotating node; 100, first opening; 101, first fixed block; 11, rotating part; 110, rotating block; 111, second opening; 112, first sleeve; 2, sleeve; 20, second sleeve; 21, third sleeve; 22, first sawtooth; 23, third opening; 24, fourth opening; 3, retractor; 30, main body; 300, second fixed block; 31, first connecting rod; 32, sensor; 33, hook head; 330, first elastic body; 34, display screen; 35, handle; 36, third fixed block; 360, first rotating shaft; 361, second sawtooth; 362, first spring; 363, second connecting rod; 37, fourth fixed block; 370, first elastic part; 371, third connecting rod; 38, fifth fixed block; 380, recess; 381, second rotating shaft; 3810, ball head; 382, fourth connecting rod; 383, sixth fixed block. DETAILED DESCRIPTION

[0026] Clearly, the described embodiments are only some, but not all, embodiments of the present application. Various modifications and changes can be made thereto by those skilled in the art which freely proscribe the scope of the application without departing from the spirit of the application. It is intended that all matter contained in the above description shall be interpreted as illustrative and not in a limiting sense.

[0027] It is also important to note that while the examples described herein focus on the use of the terms "specific" and "exemplary," the terms are used interchangeably as the context dictates. As used herein, the terms "including" and / or "having," etc., are intended to be

[0028] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the application unless otherwise specifically stated. It is to be understood that the various teachings herein can be employed in other embodiments or applications without departing from the scope of the present application. Although the examples described herein show, by way of illustration, various embodiments in which the teachings can be employed, the preferred embodiments should not be construed as limited thereto. The specific structural and functional details disclosed within the description section are not meant to be exhaustive but are instead provided to better describe the embodiments. Other embodiments can employ the state of the art and known or future methods for the practice of the application.

[0029] As Figures 1-5The utility model discloses a surgical retractor, including rotation axis 1, rotation axis 1 includes rotation node 10, rotation node 10 is " ten " cross, and the middle part is provided with the first aperture 100 that penetrates up and down, and the periphery is provided with the first fixed block 101 of cylindrical shape, rotation axis still includes the rotation part 11 that sets up symmetrically, rotation part 11 includes the rotation block 110 of arc shape, and the middle part of rotation block 110 is provided with the second aperture 111 that penetrates, and the diameter of second aperture 111 is consistent with the diameter of first aperture 100, and the both sides of rotation block 110 are provided with the first sleeve 112 that is symmetrical, and the diameter of first sleeve 112 is consistent with the diameter of first fixed block 101, and first sleeve 112 is correspondingly sleeved on first fixed block 101, and rotation part 11 rotates around rotation node 10 through first sleeve 112, sleeve 2, sleeve 2 sets up in rotation part 11 lower part, and sleeve 2 includes the second sleeve 20 of external, and second sleeve 20 is hollow shell, and the inner surface of second sleeve 20 is uniformly provided with first sawtooth 22, and the inside of second sleeve 20 is provided with the third sleeve 21 of hollow, and the diameter of third sleeve 21 is consistent with the diameter of second aperture 111, and the upper and lower surfaces of third sleeve 21 are provided with the third aperture 23 of circular penetration, and the both sides of third sleeve 21 are provided with the fourth aperture 24 of rectangle symmetry, retractor 3, retractor 3 includes the main part 30, and the main part 30 is cylindrical, and the both sides of main part 30 upper part are provided with the second fixed block 300 that is symmetrical, and the diameter of main part 30 is consistent with the diameter of third aperture 23, and the upper part of main part 30 is connected with first connecting rod 31, and first connecting rod 31 is elastomer, and the upper part of first connecting rod 31 is connected with sensor 32, and the upper part of sensor 32 is connected with hook head 33, and the inner surface of hook head 33 head is uniformly provided with the first elastomer 330 of arc shape, and the lower part of main part 30 is connected with display screen 34, and display screen 34 is connected with sensor 32 through circuit and shows the tension on sensor 32 in real time, and the bottom of main part 30 is provided with the handle 35 of cylindrical shape, and the handle 35 is provided with antiskid line, the second fixed block 300 is hinged with third fixed block 36 through the first rotation shaft 360 of corresponding setting, and the shape of third fixed block 36 is sector, and the both sides of main part 30 are provided with symmetry, and the arc surface of third fixed block 36 is provided with second sawtooth 361, and second sawtooth 361 and the first sawtooth 22 of second sleeve 20 inner surface are interlocked, and the upper surface of third fixed block 36 is connected with first spring 362, to realize the connection of third fixed block 36 with main part 30, and the lower surface of third fixed block 36 is connected with second connecting rod 363, and the upper part of second connecting rod 363 is the cylinder that penetrates third fixed block, and the lower part is provided with the cylinder that is symmetrical left and right, and second connecting rod 363 can pull third fixed block 36 and move downwards.The lower part of the main body 30 is provided with a fourth fixed block 37 in the shape of a rectangle, and first elastic components 370 are symmetrically arranged on both sides of the fourth fixed block 37, and third connecting rods 371 are arranged at the ends of the first elastic components 370 away from the fourth fixed block 37, and triangular block protrusions are arranged at the heads of the third connecting rods 371, and the third connecting rods 371 are connected with the second connecting rods 363, so as to realize downward pulling of the second connecting rods 363; the main body 30 is provided with a fifth fixed block 38 arranged between the fourth fixed block 37 and the display screen 34, and the fifth fixed block 38 is a rectangular block, and recesses 380 are symmetrically arranged on both sides of the fifth fixed block 38, and two recesses 380 are arranged on one side, and the recesses 380 are in the shape of hollow spheres, and ball heads 3810 are correspondingly arranged in the recesses 380, and the ball heads 3810 are matched with the recesses 380, and the ball heads 3810 can rotate in the recesses 380, and second rotating shafts 381 are correspondingly arranged at the ends of the ball heads 3810 away from the recesses 380, and fourth connecting rods 382 are correspondingly connected with the second rotating shafts 381, and a sixth fixed block 383 in the shape of a cylinder is arranged between the fourth connecting rods 382, and the sixth fixed block 383 can be placed on the third connecting rods 371, so as to realize fixation of the third connecting rods 371 in the pulled-down state.

[0030] As shown in the figure, Figure 1 A surgical retractor includes a rotating shaft 1, a sleeve 2 and a retractor 3. The rotating shaft 1 includes a rotating node 10 in the middle, the rotating node 10 includes a first opening 100 arranged in the middle and a first fixed block 101 arranged around the rotating node 10, and the rotating shaft 1 further includes rotating parts 11 symmetrically arranged, the rotating parts 11 include arc-shaped rotating blocks 110, the rotating blocks 110 are provided with second openings 111 in the middle, the rotating blocks 110 are provided with first sleeves 112 on both sides, and the rotating parts 11 are connected with the sleeve 2. The retractor 3 passes through the openings in the rotating shaft 1 and the sleeve 2, is arranged between the rotating shaft 1 and the sleeve 2, and includes a main body 30, a first connecting rod 31 connected to the upper part of the main body 30, a sensor 32 connected to the upper end of the first connecting rod 31, a hook head 33 connected to the upper part of the sensor 32, the hook head 33 is a curved handle with the first elastic bodies 330 in the shape of arcs uniformly arranged on the inner surfaces of the heads, the main body 30 is provided with a display screen 34, the display screen 34 is connected with the sensor 32 through a line, and the tension on the hook head 33 is displayed in real time, the main body 30 is provided with a handle 35 at the bottom, and the main body 30 is further provided with a fourth fixed block 37 and a fifth fixed block 38.

[0031] As shown in the figure, Figure 2As shown, the pull hook 3 passes through the first opening 100 on the rotating node 10 in the rotating shaft 1 and the second opening 111 on the rotating part 11, the sleeve 2 includes an external second sleeve 20, the inner surface of the second sleeve 20 is provided with a first sawtooth 22, the inside of the sleeve 2 is provided with a hollow third sleeve 21, the diameter of the third sleeve 21 is consistent with the diameter of the first opening 100 and the second opening 111, the main body 30 of the pull hook 3 is arranged inside the third sleeve 21, the third fixed block 36 is symmetrically arranged on both sides of the main body 30, the third fixed block 36 is a fan-shaped structure, the third fixed block 36 is hingedly connected with the main body 30 through a first rotating shaft 360, the third fixed block 36 is provided with a second sawtooth 361 on the fan surface, the second sawtooth 361 is engaged with the first sawtooth 22, the upper surface of the third fixed block 36 is provided with a first spring 362 connected with the main body 30, the lower part of the third fixed block 36 is provided with a second connecting rod 363, the second connecting rod 363 extends from the bottom of the second sleeve 20 and is connected with a third connecting rod 371 on a fourth fixed block 37, a first elastic component 370 is arranged between the fourth fixed block 37 and the third connecting rod 371; a fifth fixed block 38 is arranged on the main body 30 below the fourth fixed block 37, recesses 380 are symmetrically arranged on the side edges of the fifth fixed block 38, ball heads 3810 are arranged inside the recesses 380, second rotating shafts 381 are connected with the ball heads 3810, fourth connecting rods 382 are connected with the second rotating shafts 381, cylindrical sixth fixed blocks 383 are arranged between the fourth connecting rods 382, the sixth fixed blocks 383 can be placed on the third connecting rod 371 to limit the movement of the third connecting rod 371.

[0032] As shown in the figure, Figure 3 As shown, the rotating shaft 1 includes a rotating node 10 and a rotating part 11, the rotating node 10 includes a first opening 100 arranged through the middle, and a plurality of cylindrical first fixed blocks 101 are uniformly arranged around the rotating node 10; the rotating part 11 is provided with two, the two rotating parts 11 are symmetrically arranged around the rotating center, the rotating part 11 includes an arc-shaped rotating block 110, the rotating block 110 is provided with a second opening 111 passing through the middle, and first sleeves 112 are symmetrically arranged on both sides of the rotating block 110, the inner diameter of the first sleeve 112 is consistent with the first fixed block 101, and the first sleeve 112 can be correspondingly sleeved on the first fixed block 101, and the rotating part 11 is rotated around the rotating node 10 through the first sleeve 112.

[0033] As shown in the figure, Figure 4As shown, the sleeve 2 includes an outer second sleeve 20, which is a hollow shell with a first serration 22 on its inner surface. Inside the second sleeve 20, there is a third sleeve 21 with a diameter smaller than that of the second sleeve 20. The third sleeve 21 is a hollow shell with a third opening 23 penetrating through its upper and lower surfaces. The side of the third sleeve 21 is symmetrically provided with a fourth opening 24 in a rectangular shape.

[0034] like Figure 5 As shown, the hook 3 includes a main body 30. A first connecting rod 31 is connected to the upper part of the main body 30. The diameter of the first connecting rod 31 is smaller than the diameter of the main body 30. The first connecting rod 31 is made of an elastic component. A sensor 32 is connected to the upper part of the first connecting rod 31. A hook head 33 is provided on the upper part of the sensor 32. The head of the hook head 33 is a curved handle with a first elastic body 330 of an arc shape evenly arranged on its inner surface. Second fixing blocks 300 are symmetrically arranged on both sides of the upper part of the main body 30. Fan-shaped third fixing blocks 36 are correspondingly arranged on both sides of the second fixing blocks 300. The second fixing blocks 300 and the third fixing blocks 36 are hinged together by a first rotating shaft 360. The fan-shaped surface of the third fixing block 36 is provided with second serrations 361. A first spring 362 is provided on the upper surface of the third fixing block 36 and connected to the main body 30. A second connecting rod 363 is provided at the lower part of the third fixing block 36. The upper part of the second connecting rod 363 is a cylinder that passes through the third fixing block, and the lower part is a cylinder symmetrically arranged on both sides. The second connecting rod 363 can pull the third fixing block 36 downward; a fourth fixing block 37 is provided at the lower part of the main body 30, and first elastic members 370 are symmetrically arranged on both sides of the fourth fixing block 37. The first elastic members 370 can be bent, and a third connecting rod 371 is provided at the end of the first elastic member 370 away from the fourth fixing block 37. The head of the third connecting rod 371 is a triangular block protrusion; a fifth fixing block 38 is provided on the main body 30. Between the fourth fixing block 37 and the display screen 34, four recesses 380 are symmetrically arranged on both sides of the fifth fixing block 38. Each recess 380 is spherical and has a corresponding ball head 3810. The ball head 3810 is connected to a second rotating shaft 381. The second rotating shaft 381 is connected to a fourth connecting rod 382. A sixth fixing block 383 is arranged inside the fourth connecting rod 382. The sixth fixing block 383 can be placed on the third connecting rod 371 to limit the movement.

[0035] When the application is used, the specific technical effects brought by the embodiment are as follows: before the operation, the operation planning is performed, the size and direction of the force applied by the surgical retractor to the soft tissue are determined, in the operation process, first, the rotating part on the rotating shaft is adjusted, the rotating part is rotated around the rotating node, and the angle of rotation is determined by using the scale during the rotation, when the angle is adjusted, because the first sleeve and the first fixed block have strong damping feeling, the rotation is not easy, when the angle is determined, the third connecting rod on the fourth fixed block is pulled down at this time, the third connecting rod can pull the second connecting rod to move downward, the second connecting rod drives the third fixed block to rotate downward around the first rotating shaft, when the third fixed block is separated from the meshing with the first sawtooth, the fourth connecting rod on the fifth fixed block is rotated upward and placed on the third connecting rod at this time, the triangular block protrusion on the third connecting rod can block the sixth fixed block from being separated, the third connecting rod is released at this time, because the first elastic component has resilience, the sixth fixed block is blocked on the third connecting rod to avoid the rebound of the third connecting rod, and the rebound of the third fixed block is avoided; at this time, the handle at the bottom of the retractor is pulled down, at this time, the retractor moves according to the adjusted angle, and the size of the force applied on the hook head is displayed on the display screen in real time through the sensor, when the preset force size is reached, the handle is stopped, at this time, the third connecting rod is pulled down, and the sixth fixed block is pushed upward until the triangular block protrusion on the third connecting rod is pushed out, when the sixth fixed block is separated from the third connecting rod, the third connecting rod is released, the first elastic component drives the third connecting rod to rebound, and the second connecting rod is moved upward, at this time, the first spring on the third fixed block also drives the third fixed block to rebound, and the third fixed block is retracted to the meshing of the second sawtooth and the first sawtooth, at this time, the third fixed block is fixed, so that the main body is fixed, and the retractor is set to a fixed angle and force, at this time, the medical staff can avoid pulling the surgical retractor all the time, and the workload is reduced. When the operation is completed, the angle and force of the retractor can be adjusted according to the above method, so that the retractor returns to the initial position.

[0036] In summary, the surgical retractor is improved, the size and angle of the force applied by the surgical retractor can be adjusted according to the preoperative planning scheme, the surgical retractor is fixed during the operation, the continuous pulling of the medical staff is avoided, the workload is reduced, the damage of the surgical retractor to the soft tissue is reduced, and the operation field is ensured.

[0037] In the description of the application, it needs to be understood that the orientation words such as "front, back, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element indicated must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0038] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0039] In addition, it should be noted that the use of "first", "second" and the like to define parts only facilitates the differentiation of corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the application.

[0040] The above only describes the preferred embodiments of the application and is not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the scope of protection of the application.

Claims

1. A surgical retractor, characterized in that, include: Rotating shaft (1), the rotating shaft (1) includes a rotating node (10) and a rotating part (11) connected to the outside of the rotating node (10) and symmetrically arranged. Sleeve (2), the sleeve (2) is connected to the rotating part (11), the sleeve (2) includes a second sleeve (20) disposed on the outside and a third sleeve (21) disposed inside, the inner surface of the second sleeve (20) is provided with a first serration (22). A hook (3) passes through the rotating shaft (1) and the sleeve (2), the hook (3) comprising: The main body (30) is disposed inside the third sleeve (21), and a second fixing block (300) is symmetrically disposed on the main body (30). The first connecting rod (31) is disposed on the top of the main body (30); Sensor (32), which is connected to the first connecting rod (31); Hook (33), which is connected to the first connecting rod (31); A display screen (34) is disposed at the bottom of the main body (30); A handle (35) is disposed at the bottom of the display screen (34); The third fixing block (36) is hinged to the second fixing block (300). The third fixing block (36) has a second serration (361) on its side. The third fixing block (36) has a first spring (362) on its upper part that is connected to the main body (30). The second serration (361) meshes with the first serration (22). The bottom of the third fixing block (36) is connected to a second connecting rod (363). The fourth fixing block (37) is located at the lower part of the main body (30). The fourth fixing block (37) is symmetrically provided with a first elastic component (370) and a third connecting rod (371) on the left and right sides. The third connecting rod (371) is connected to the second connecting rod (363). The fifth fixing block (38) is located at the lower part of the main body (30). The fifth fixing block (38) is also provided with a second rotating shaft (381). The second rotating shaft (381) is connected to a fourth connecting rod (382). A sixth fixing block (383) is provided between the fourth connecting rods (382). The sixth fixing block (383) can be placed on the third connecting rod (371) to fix the third connecting rod (371) in the pull-down state.

2. A surgical retractor according to claim 1, characterized in that, The rotating node (10) is shaped like a cross, with a first opening (100) in the middle that penetrates the upper and lower end faces, and a first fixing block (101) around it. The first fixing block (101) is cylindrical. The rotating part (11) includes a rotating block (110) in the shape of an arc. The rotating block (110) has a second opening (111) in the middle. The diameter of the first opening (100) and the second opening (111) are the same. The rotating block (110) has a first sleeve (112) at both ends. The first sleeve (112) cooperates with the first fixing block (101). The first sleeve (112) can rotate around the first fixing block (101) with a significant damping sensation.

3. A surgical retractor according to claim 1, characterized in that, The sleeve (2) is connected and fixed to the rotating part (11). The second sleeve (20) is a hollow cylinder. The third sleeve (21) is a hollow cylinder. The diameter of the third sleeve (21) is the same as the diameter of the second opening (111). The upper and lower parts of the third sleeve (21) are provided with a circular third opening (23). The sides of the third sleeve (21) are symmetrically provided with a rectangular fourth opening (24).

4. A surgical retractor according to claim 3, characterized in that, The main body (30) is a cylinder with a diameter consistent with the third opening (23). The second fixing block (300) is a cuboid and extends from the fourth opening (24).

5. A surgical retractor according to claim 1, characterized in that, The first connecting rod (31) is an elastic component, the head of the hook (33) is a curved handle with a first elastic body (330) of arc shape evenly arranged on the inner surface, and the sensor (32) is connected to the display screen (34) by a line.

6. A surgical retractor according to claim 1, characterized in that, The third fixing block (36) is fan-shaped and is hinged to the second fixing block (300) via the first rotating shaft (360).

7. A surgical retractor according to claim 1, characterized in that, The fourth fixing block (37) is fixedly connected to the main body (30), and the first elastic component (370) is located between the fourth fixing block (37) and the third connecting rod (371). The head of the third connecting rod (371) is a triangular block protrusion.

8. A surgical retractor according to claim 1, characterized in that, The fifth fixing block (38) has a total of four recesses (380) symmetrically arranged on the left and right sides, and the second rotating shaft (381) has a ball head (3810) at its head.

9. A surgical retractor according to claim 8, characterized in that, The shape and number of the ball head (3810) match the recess (380). The fourth connecting rod (382) is located away from the second rotating shaft (381) at the other end, and a sixth fixing block (383) is provided between the two fourth connecting rods (382). The sixth fixing block (383) is a cylinder.

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