A surgical auxiliary distraction device

Abstract

The utility model discloses a kind of auxiliary distraction devices for operation, it is related to medical instrument technical field.Auxiliary distraction devices for operation include handle, guide pipe, distraction assembly, adjusting assembly, limiting component;One end of guide pipe is connected with handle;Distraction assembly is set to the end portion of guide pipe away from handle, distraction assembly includes first jaw, second jaw, and all are connected with guide pipe by first pivot hinge connection;Adjusting assembly is set on handle;Limiting component is installed on handle;The auxiliary distraction device for operation provided by the utility model, when surgical field is limited due to surrounding tissue, only need to hold handle and move distraction assembly to limited area of field of view, then drive adjusting assembly to make first jaw and second jaw open to the tissue obstructing operation, and then limit distraction assembly using limiting component, to quickly solve the problem of limited surgical field, ensure the smoothness of surgical process and surgical safety.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an auxiliary dissector for surgery. Background Technology

[0002] Coracoid process displacement and fixation surgery is a highly effective and targeted surgical treatment for severe and frequently recurring shoulder dislocations due to glenoid defects. This surgery effectively enhances shoulder joint stability and significantly reduces the risk of recurrence by repositioning and fixing the coracoid process. In recent years, with the continuous advancement of minimally invasive techniques, arthroscopic coracoid process displacement and fixation surgery, especially the technique using two cannulated screws (i.e., arthroscopic Latarjet surgery), has been widely used clinically due to its minimal invasiveness, rapid recovery, and definite efficacy. This surgical method has not only undergone rigorous clinical practice and biomechanical testing but has also demonstrated good therapeutic effects in multiple studies, providing patients with a safer and more effective treatment option.

[0003] However, despite significant advancements in the arthroscopic Latarjet procedure for treating recurrent shoulder dislocations, a series of challenges and problems remain in practice. Among these, nerve injury, as one of the most dangerous and significant intraoperative complications, has been a major concern. Previous literature reports that the probability of postoperative neurological dysfunction due to nerve traction, irritation, or damage during surgery is approximately 1.1% to 3.1%. This risk largely stems from insufficient nerve exposure in the surgical area and the anatomical characteristics of the region's proximity to the brachial plexus, making it susceptible to nerve damage even with slight mishandling during the procedure.

[0004] To reduce the risk of nerve injury, various solutions have been explored clinically. Commonly used methods include using tools such as exchange rods or rubber tubing to separate the subscapularis muscle, thereby creating a relatively safe medial boundary for surgical manipulation while maximizing the surgical field and operating space. While these measures do help reduce the likelihood of nerve injury to some extent, in practice, it is still difficult to completely avoid insufficient exposure or accidental nerve injury. Therefore, how to further reduce the risk of nerve injury while ensuring surgical outcomes remains a key issue that related surgeries need to address and resolve. Utility Model Content

[0005] In view of this, the purpose of this utility model is to overcome the shortcomings of related technologies, and this utility model provides an auxiliary dilation device for surgery.

[0006] This utility model provides the following technical solution:

[0007] A surgical auxiliary retraction device includes a handle, a guide tube, a retraction component, an adjustment component, and a limiting component.

[0008] One end of the guide tube is connected to the handle; the spreading component is disposed at the end of the guide tube opposite to the handle, the spreading component includes a first jaw and a second jaw, the first jaw and the second jaw are centrally symmetrically arranged, and both are hinged to the guide tube through a first rotating shaft; the adjusting component is disposed on the handle, the adjusting component can drive the first jaw and the second jaw to swing relative to each other; the limiting component is mounted on the handle, the limiting component is used to limit the adjusting component, thereby limiting the relative position of the first jaw and the second jaw.

[0009] As a further improvement to the above technical solution, the adjustment component includes a telescopic rod and a swing member. The swing member is hinged to the handle via a second pivot. The telescopic rod passes through the guide tube, with one end connected to the swing member and the other end connected to the first jaw and the second jaw, respectively. The swinging motion of the swing member can push the telescopic rod to move relative to the guide tube, thereby causing the first jaw and the second jaw to move closer to or further away from each other.

[0010] As a further improvement to the above technical solution, the end of the telescopic rod away from the swing member is provided with a third rotating shaft. The axis of the third rotating shaft is parallel to the axis of the first rotating shaft. The first jaw and the second jaw are both provided with a first long groove corresponding to the third rotating shaft. The third rotating shaft passes through both of the first long grooves of the first jaw and the second jaw. There is an angle between the long side of the first long groove and the axis of the guide tube.

[0011] As a further improvement to the above technical solution, the telescopic rod is provided with a fourth rotating shaft at the end near the swing member. The axis of the fourth rotating shaft is parallel to the axis of the second rotating shaft. The swing member is provided with a second long groove corresponding to the fourth rotating shaft, and the fourth rotating shaft passes through the second long groove. There is an angle between the line connecting the axis of the second rotating shaft and the axis of the fourth rotating shaft and the long side of the second long groove.

[0012] As a further improvement to the above technical solution, the fourth rotating shaft is movably mounted on the telescopic rod, with both ends of the fourth rotating shaft passing through the handle. Both ends of the fourth rotating shaft are provided with locking components, and the guide tube is mounted on the handle through the locking components.

[0013] As a further improvement to the above technical solution, the circumferential side of the end of the swing member away from the second rotating shaft is provided with anti-slip texture.

[0014] As a further improvement to the above technical solution, a through hole is provided at the end of the swing member opposite to the second rotating shaft.

[0015] As a further improvement to the above technical solution, the limiting component includes a limiting member, which is hinged to the handle via a fifth pivot. The sway member has a limiting portion corresponding to the limiting member on its periphery near the second pivot. An elastic member is provided between the end of the limiting member away from the limiting portion and the handle. Under the elastic force of the elastic member, the end of the limiting member near the second pivot can be driven to abut against the limiting portion to limit the relative position of the sway member and the second pivot.

[0016] As a further improvement to the above technical solution, the oscillating member is provided with limiting teeth evenly distributed on the periphery of the end near the second rotating shaft to form a limiting part; the end of the limiting member near the limiting part is provided with a limiting hook corresponding to the limiting teeth, and the limiting hook can engage with the limiting teeth under the elastic force of the elastic member.

[0017] As a further improvement to the above technical solution, the handle is provided with a mating groove corresponding to the shape of the limiting member, and the elastic member is disposed in the mating groove.

[0018] Compared with related technologies, the beneficial effects of this utility model are:

[0019] This invention provides a surgical auxiliary retraction device specifically designed to address the problem of limited surgical field of vision caused by obstruction from surrounding tissues during surgery. In actual surgical procedures, when the surgical field of vision is restricted by surrounding tissues, the surgeon can hold the handle of this device. Then, the retraction component at the end of the guide tube is moved to the area with limited surgical field of vision. At this point, the surgeon first operates the limiting component to unlock the built-in adjustment component. After unlocking, the surgeon further operates the carefully designed adjustment component on the handle. This operation drives the first and second jaws of the retraction component to move away from each other, thereby achieving an opening action and effectively retracting the tissues obstructing the surgical view.

[0020] After retracting the tissue to a suitable position, to ensure the stability and continuity of the surgery, the surgeon needs to use the limiting component again to restrict the position of the adjusting component, thereby indirectly fixing the relative position of the first and second jaws. This design ensures that the present invention can provide a stable and reliable retraction effect during the operation, greatly improving the efficiency and convenience of the operation.

[0021] Even more user-friendly is the fact that the handle and the retractor are positioned relatively far apart throughout the entire operation of the retractor. This design effectively prevents the handle and the surgeon's hand from obstructing the view of the surgical area. Furthermore, since the limiting and adjusting components are both located on the handle, this layout not only eliminates the need for the surgeon to directly contact the retractor, thus avoiding potential contamination or damage to human tissue, but also further reduces obstruction of vision during the procedure, ensuring safety and accuracy during tissue retraction.

[0022] When the surgery is complete or the device needs to be removed, the surgeon simply operates the limiting component again to release the restriction on the adjusting component. Then, by operating the adjusting component, the first and second jaws can be brought closer together and closed. Once it is confirmed that the first and second jaws are completely closed, the surgeon can operate the limiting component again to re-fix the adjusting component. At this point, the surgeon can smoothly and safely remove the device from the surgical incision; the entire operation is extremely convenient.

[0023] Through the above-described process, the surgical team can quickly and effectively address the issue of limited surgical visibility, thereby ensuring the smoothness of the surgical procedure and patient safety. This innovative design undoubtedly brings a new solution to the field of surgery, improving the overall efficiency and success rate of operations.

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0025] 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 on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the surgical auxiliary dissector device in one embodiment of the present invention.

[0027] Figure 2 This is a cross-sectional view of a surgical auxiliary dissector according to one embodiment of the present invention;

[0028] Figure 3 It shows Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 It shows Figure 2 Enlarged view of point B in the middle;

[0030] Figure 5 This is a partial view of a surgical auxiliary dissector device according to one embodiment of the present invention.

[0031] Explanation of key component symbols:

[0032] 100-Handle; 110-Matching groove; 200-Guide tube; 300-Spreading assembly; 310-First jaw; 320-Second jaw; 321-First long groove; 330-First pivot; 400-Adjusting assembly; 410-Telescopic rod; 411-Third pivot; 412-Fourth pivot; 413-Locking component; 420-Swing component; 421-Second pivot; 422-Second long groove; 423-Anti-slip texture; 424-Perforation; 425-Limiting tooth; 500-Limiting assembly; 510-Limiting component; 511-Limiting hook; 520-Fifth pivot; 530-Elastic component. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical 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 utility model according to the specific circumstances.

[0037] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] like Figure 1 As shown, an embodiment of this utility model provides a surgical auxiliary retraction device, including a handle 100, a guide tube 200, a retraction component 300, an adjustment component 400, and a limiting component 500.

[0039] One end of the guide tube 200 is connected to the handle 100; the spreading component 300 is disposed at the end of the guide tube 200 away from the handle 100, the spreading component 300 includes a first jaw 310 and a second jaw 320, the first jaw 310 and the second jaw 320 are centrally symmetrically arranged, and both are hinged to the guide tube 200 through a first rotating shaft 330; the adjusting component 400 is disposed on the handle 100, the adjusting component 400 can drive the first jaw 310 and the second jaw 320 to swing relative to each other; the limiting component 500 is mounted on the handle 100, the limiting component 500 is used to limit the adjusting component 400, thereby limiting the relative position of the first jaw 310 and the second jaw 320.

[0040] The surgical auxiliary retraction device provided in this embodiment allows the surgeon to hold the handle 100 when the surgical field of vision is limited by surrounding tissues during actual surgical operations. The retraction component 300 at the end of the guide tube 200 is then moved to the area with limited surgical vision. At this point, the surgeon first operates the limiting component 500 to unlock the built-in adjustment component 400. After unlocking, the surgeon further operates the carefully designed adjustment component 400 on the handle 100. This operation causes the first jaw 310 and the second jaw 320 in the retraction component 300 to move away from each other, thereby achieving an opening action and effectively retracting the tissues obstructing the surgical view.

[0041] After retracting the tissue to the appropriate position, to ensure the stability and continuity of the surgery, the surgeon needs to use the limiting component 500 again to restrict the position of the adjusting component 400, thereby indirectly fixing the relative position of the first jaw 310 and the second jaw 320. This design ensures that the present invention can provide a stable and reliable retraction effect during the operation, greatly improving the efficiency and convenience of the operation.

[0042] More importantly, throughout the operation of the retractor component 300, the handle 100 is positioned relatively far from the retractor component 300. This design effectively prevents the handle 100 and the surgeon's hand from obstructing the view of the surgical area. Furthermore, since the limiting component 500 and the adjusting component 400 are both located on the handle 100, this layout not only allows the surgeon to operate the retractor component 300 without direct contact, thus avoiding potential contamination or damage to human tissue, but also further reduces obstruction of vision during operation, ensuring safety and accuracy during tissue retraction.

[0043] When the surgery is complete or the present invention needs to be removed, the doctor simply operates the limiting component 500 again to release the restriction on the adjusting component 400. Then, by operating the adjusting component 400, the first jaw 310 and the second jaw 320 can be driven to approach and close. Once it is confirmed that the first jaw 310 and the second jaw 320 are completely closed, the doctor can operate the limiting component 500 again to re-limit and fix the adjusting component 400. At this point, the doctor can smoothly and safely remove the present invention from the surgical incision; the entire operation is extremely convenient.

[0044] Combination Figure 2 , Figure 4As shown, in some specific embodiments, the adjustment assembly 400 includes a telescopic rod 410 and a swing member 420. The swing member 420 is hinged to the handle 100 via a second pivot 421. The telescopic rod 410 passes through the guide tube 200, with one end connected to the swing member 420 and the other end connected to the first jaw 310 and the second jaw 320, respectively. In actual operation, when the doctor needs to adjust the opening degree of the jaws, they only need to gently swing the swing member 420. As the swing member 420 swings, it pushes the telescopic rod 410 relative to the guide tube 200 through the connection. This movement is smooth and controllable, and it can precisely drive the first jaw 310 and the second jaw 320 closer or further apart, thereby achieving the desired opening or closing effect for the doctor.

[0045] It is worth mentioning that this adjustment method is not only convenient and quick to operate, but also greatly improves the efficiency and precision of surgery. During the operation, the surgeon can quickly and accurately adjust the opening and closing of the clamps to adapt to the needs of different surgical sites and stages.

[0046] like Figure 3 As shown, in some specific embodiments, the end of the telescopic rod 410 opposite to the swing member 420 is provided with a third rotating shaft 411. The axis of the third rotating shaft 411 is parallel to the axis of the first rotating shaft 330. Both the first jaw 310 and the second jaw 320 are provided with a first elongated groove 321 corresponding to the third rotating shaft 411. The third rotating shaft 411 passes through both the first elongated grooves 321 of the first jaw 310 and the second jaw 320. There is an angle between the long side of the first elongated groove 321 and the axis of the guide tube 200, which means that the first elongated groove 321 does not extend in a straight line along the axis of the guide tube 200, but is offset from it. This design ensures that the movement of the third rotating shaft 411 within the first elongated groove 321 can bring about the rotation of the jaws.

[0047] In actual operation, when the telescopic rod 410 extends or retracts relative to the guide tube 200, the third rotating shaft 411 also moves accordingly. This movement is not a simple linear motion, but rather involves sliding within the first elongated groove 321 while simultaneously approaching the first rotating shaft 330. Because the first elongated groove 321 forms an angle with the axis of the guide tube 200, the sliding of the third rotating shaft 411 within the first elongated groove 321 causes the first jaw 310 and the second jaw 320 to rotate simultaneously relative to the first rotating shaft 330. This rotational motion is precisely what we need; it allows the first jaw 310 and the second jaw 320 to open or close relative to each other, thereby achieving the purpose of opening or closing the surgical area tissue.

[0048] like Figure 5 As shown, in some specific embodiments, the telescopic rod 410 has a fourth rotating shaft 412 at its end near the swing member 420. The axis of the fourth rotating shaft 412 is parallel to the axis of the second rotating shaft 421. The swing member 420 has a second long groove 422 corresponding to the fourth rotating shaft 412, and the fourth rotating shaft 412 passes through the second long groove 422. There is an angle between the line connecting the axis of the second rotating shaft 421 and the axis of the fourth rotating shaft 412 and the long side of the second long groove 422. The design of this angle is the key to the entire connection mechanism, as it determines how the swinging motion of the swing member 420 is converted into the movement of the telescopic rod 410 relative to the guide tube 200.

[0049] In actual operation, when it is necessary to drive the swinging component 420 to swing relative to the second rotating shaft 421, this swinging motion is immediately converted into the movement of the fourth rotating shaft 412 within the second long groove 422. Because there is an angle between the long side of the second long groove 422 and the line connecting the second rotating shaft 421 and the fourth rotating shaft 412, this movement is not a simple linear motion, but is accompanied by a certain rotational component. This rotational component is precisely what we need; it drives the telescopic rod 410 to move relative to the guide tube 200, thereby realizing the opening and closing action of the jaws.

[0050] It is worth mentioning that this design not only ensures stable and reliable transmission, but also features a simple and compact structure. The fit between the fourth rotating shaft 412 and the second long slot 422 ensures that the swing motion of the swinging component 420 can be accurately converted into the movement of the telescopic rod 410.

[0051] In some specific embodiments, the fourth rotating shaft 412 is movably mounted on the telescopic rod 410, with both ends of the fourth rotating shaft 412 extending from the handle 100. Each end of the fourth rotating shaft 412 is equipped with a locking element 413. The guide tube 200 is mounted on the handle 100 via the locking elements 413. These locking elements 413 can be any form of snap-fit, nut, or other fixing device, and their function is to lock the fourth rotating shaft 412 or the guide tube 200 onto the handle 100, preventing it from loosening or falling off during surgery. By movably mounting the fourth rotating shaft 412 on the telescopic rod 410, this design allows doctors to easily replace different specifications or types of the retractor assembly 300 and the guide tube 200 according to surgical needs. Because the fourth rotating shaft 412 is movable, doctors can easily disassemble and replace the retractor assembly 300 and the guide tube 200 to adapt to different surgical scenarios and patient needs. Furthermore, this design also facilitates the disassembly, cleaning, and disinfection of the retractor assembly 300 and the guide tube 200. Cleaning and sterilizing surgical instruments is crucial for preventing cross-infection and ensuring patient safety, and the movable fourth pivot 412 makes the disassembly and cleaning of the spreading assembly 300 simpler and more convenient.

[0052] In some specific embodiments, the oscillating element 420 has anti-slip texture 423 on its peripheral side at the end opposite to the second rotating shaft 421. The presence of the anti-slip texture 423 provides the doctor with a more reliable grip point. During the operation, the doctor needs to frequently move the oscillating element 420 to adjust the opening angle of the opening assembly 300. If the surface of the oscillating element 420 is smooth, the doctor may slip due to factors such as hand sweat and glove friction, which may not only affect the smooth progress of the operation but also cause injury to the patient. The design of the anti-slip texture 423 effectively solves this problem. It increases the friction between the doctor's fingers and the oscillating element 420, allowing the doctor to complete the operation more stably and accurately when moving the oscillating element 420.

[0053] Furthermore, the anti-slip texture 423 design ensures the accuracy of adjusting the opening angle of the retractor component 300. During surgery, the opening angle of the retractor component 300 is crucial for the smooth progress of the procedure and the patient's recovery. Inaccurate opening angles can lead to insufficient exposure of the surgical site and limited manipulation of surgical instruments. The anti-slip texture 423 design allows surgeons to more precisely control the opening angle of the retractor component 300, thereby ensuring the precision and safety of the surgery.

[0054] In some specific embodiments, the end of the swing member 420 opposite to the second rotating shaft 421 is provided with a through hole 424, so that when this embodiment is not in use, it can be hung on an instrument rack or other places through the through hole 424 for easy storage.

[0055] In some specific embodiments, the limiting assembly 500 includes a limiting member 510, which is hinged to the handle 100 via a fifth pivot 520. The oscillating member 420 has a limiting portion corresponding to the limiting member 510 on its periphery near the end of the second pivot 421. An elastic member 530 is provided between the end of the limiting member 510 away from the limiting portion and the handle 100. This elastic member 530 can be a spring, a sheet, or other elastic element, and its function is to provide a continuous elastic force, driving the end of the limiting member 510 near the second pivot 421 to always abut against the limiting portion. Under the elastic force of the elastic member 530, the end of the limiting member 510 near the second pivot 421 can be driven to abut against the limiting portion. This design not only ensures a tight fit between the limiting member 510 and the limiting portion but also effectively prevents unnecessary displacement or shaking of the oscillating member 420 due to external forces during surgery.

[0056] When unlocking the swing element 420 is required, the entire process becomes exceptionally simple and efficient. The doctor simply presses the end of the limiting element 510 away from the limiting part, causing it to exert a certain squeezing force on the elastic element 530, which quickly separates the limiting element 510 from the limiting part, thus achieving unlocking. This design not only reduces the difficulty of operation for doctors but also improves the efficiency and safety of the surgery.

[0057] When the limiting member 510 is not subjected to external force, the elastic force of the elastic member 530 will come into play again, automatically driving the limiting member 510 to abut against the limiting part of the swing member 420, ensuring that all components of the entire spreading assembly 300 are always in a stable and reliable state. This design not only enhances the safety of the entire device but also provides a strong guarantee for the smooth progress of the surgery.

[0058] In some specific embodiments, the oscillating member 420 has evenly distributed limiting teeth 425 on its periphery near the end of the second rotating shaft 421 to form a limiting portion; the limiting member 510 has a limiting hook 511 corresponding to the limiting teeth 425 at its end near the limiting portion, and the limiting hook 511 can engage with the limiting teeth 425 under the elastic force of the elastic member 530; when the limiting member 510 approaches the limiting portion under the elastic force of the elastic member 530, the limiting hook 511 can accurately embed between the limiting teeth 425 to form a firm connection point. This design not only improves the cooperation effect between the limiting member 510 and the limiting portion, but also effectively prevents the oscillating member 420 from unnecessary displacement or shaking due to external forces during surgery.

[0059] It is worth mentioning that the engagement mechanism between the limiting hook 511 and the limiting teeth 425 has extremely high reliability and stability. Because the limiting teeth 425 are evenly distributed and regularly shaped, the limiting hook 511 can easily find and engage with the appropriate limiting teeth 425. Simultaneously, the elastic force of the elastic element 530 ensures that the limiting hook 511 always maintains a tight engagement with the limiting teeth 425, maintaining the stability of the connection even when subjected to significant external forces during surgery.

[0060] Furthermore, the engagement between the limiting hook 511 and the limiting tooth 425 possesses a certain degree of self-adjustment. When the swinging component 420 needs slight position adjustments for some reason, the limiting hook 511 can make minor sliding and adjustments between the limiting teeth 425 to adapt to the new positional requirements. This self-adjustment capability not only improves the flexibility and adaptability of the entire device but also provides greater convenience for doctors during surgical procedures.

[0061] In some specific embodiments, the handle 100 is provided with a mating groove 110 corresponding to the shape of the limiting member 510, and the elastic member 530 is disposed in the mating groove 110 to avoid the limiting member 510 when it is pressed, thereby improving the comfort of the doctor when using this embodiment.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A surgical auxiliary retractor, characterized in that, include: Handle (100); A guide tube (200), one end of which is connected to the handle (100); A spreading component (300) is disposed at the end of the guide tube (200) away from the handle (100). The spreading component (300) includes a first jaw (310) and a second jaw (320). The first jaw (310) and the second jaw (320) are centrally symmetrically arranged and are both hinged to the guide tube (200) through a first pivot (330). An adjustment component (400) is disposed on the handle (100), and the adjustment component (400) is capable of driving the first jaw (310) and the second jaw (320) to swing relative to each other; A limiting component (500) is mounted on the handle (100) to limit the adjustment component (400) and thereby restrict the relative position of the first jaw (310) and the second jaw (320).

2. The surgical auxiliary retractor according to claim 1, characterized in that, The adjustment assembly (400) includes a telescopic rod (410) and a swing member (420). The swing member (420) is hinged to the handle (100) via a second pivot (421). The telescopic rod (410) passes through the guide tube (200). One end of the telescopic rod (410) is connected to the swing member (420), and the other end of the telescopic rod (410) is connected to the first jaw (310) and the second jaw (320) respectively. The swinging of the swing member (420) can push the telescopic rod (410) to move relative to the guide tube (200), thereby driving the first jaw (310) and the second jaw (320) to move closer to or further away from each other.

3. The surgical auxiliary retractor according to claim 2, characterized in that, The telescopic rod (410) has a third rotating shaft (411) at the end away from the swing member (420). The axis of the third rotating shaft (411) is parallel to the axis of the first rotating shaft (330). The first jaw (310) and the second jaw (320) are each provided with a first long groove (321) corresponding to the third rotating shaft (411). The third rotating shaft (411) passes through both the first jaw (310) and the second jaw (320) in the two first long grooves (321). There is an angle between the long side of the first long groove (321) and the axis of the guide tube (200).

4. The surgical auxiliary retractor according to claim 2, characterized in that, The telescopic rod (410) has a fourth pivot (412) at its end near the swing member (420). The axis of the fourth pivot (412) is parallel to the axis of the second pivot (421). The swing member (420) has a second long groove (422) corresponding to the fourth pivot (412). The fourth pivot (412) passes through the second long groove (422). There is an angle between the line connecting the axis of the second pivot (421) and the axis of the fourth pivot (412) and the long side of the second long groove (422).

5. The surgical auxiliary retractor according to claim 4, characterized in that, The fourth pivot (412) is movably mounted on the telescopic rod (410). Both ends of the fourth pivot (412) protrude from the handle (100). Both ends of the fourth pivot (412) are provided with locking elements (413). The guide tube (200) is mounted on the handle (100) through the locking elements (413).

6. The surgical auxiliary retractor according to claim 2, characterized in that, The oscillating member (420) has anti-slip texture (423) on the periphery of the end facing away from the second rotating shaft (421).

7. The surgical auxiliary retractor according to claim 2, characterized in that, The swing member (420) has a through hole (424) at the end opposite to the second rotating shaft (421).

8. The surgical auxiliary retractor according to any one of claims 2 to 7, characterized in that, The limiting component (500) includes a limiting member (510), which is hinged to the handle (100) via a fifth pivot (520). The swing member (420) has a limiting portion corresponding to the limiting member (510) on its periphery near the end of the second pivot (421). An elastic member (530) is provided between the end of the limiting member (510) away from the limiting portion and the handle (100). Under the elastic force of the elastic member (530), the end of the limiting member (510) near the second pivot (421) can be driven to abut against the limiting portion to limit the relative position of the swing member (420) and the second pivot (421).

9. The surgical auxiliary retractor according to claim 8, characterized in that, The swing member (420) has a set of limiting teeth (425) evenly distributed around its end near the second rotating shaft (421) to form a limiting part; the limiting member (510) has a limiting hook (511) corresponding to the limiting teeth (425) at its end near the limiting part, and the limiting hook (511) can engage with the limiting teeth (425) under the elastic force of the elastic member (530).

10. The surgical auxiliary retractor according to claim 8, characterized in that, The handle (100) has a mating groove (110) corresponding to the shape of the limiting member (510), and the elastic member (530) is disposed in the mating groove (110).

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