Surgical operation equipment and suspension device thereof

Abstract

The utility model relates to surgical operation equipment and a suspension device thereof, the suspension device comprises a main body, a supporting assembly movably connected with the main body and an operating part in transmission connection with the supporting assembly, the supporting assembly comprises a plurality of supporting units, and each supporting unit comprises a first supporting frame and a second supporting frame connected with the first supporting frame; the supporting assembly has an unfolded state of the first supporting frame, and in the unfolded state of the first supporting frame, the supporting length of the supporting unit is the first length; the supporting assembly has the unfolding state of the second supporting frame, in the unfolding state of the second supporting frame, the supporting length of the supporting unit is the second length, the second length is larger than the first length, and the operating piece is in transmission connection with the second supporting frame and used for adjusting the supporting length of the second supporting frame. The supporting length of each supporting unit is between the first length and the second length, the supporting length of at least one second supporting frame in the multiple supporting units is independently adjustable, and the space needed by the abdominal cavity operation can be better matched.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a surgical operation device and a suspension device thereof. Background Art

[0002] As an advanced minimally invasive technique, laparoscopic surgery has been widely used in clinic due to its small surgical trauma, less bleeding and fast postoperative recovery. 2 Pneumoperitoneum technology props up the abdominal wall to create space for surgical operations, which can easily cause pneumoperitoneum complications.

[0003] To this end, in recent years, people have developed various abdominal wall suspension devices, such as suspension umbrellas, etc., which can lift the abdominal wall to perform laparoscopic surgery without pneumoperitoneum or low-pressure pneumoperitoneum, greatly reducing the impact of pneumoperitoneum pressure on the heart and lungs during laparoscopic surgery. However, for different patients, the size of the space in the abdominal cavity is different, and the existing suspension umbrellas have the problem of insufficient lifting of the abdominal wall or easy to puncture the abdominal wall tissue, which needs further improvement. Utility Model Content

[0004] In view of this, a suspension device and a surgical device using the suspension device are provided to solve at least one or more of the above-mentioned technical problems.

[0005] On the one hand, the utility model provides a suspension device, including a main body, a support assembly movably connected to the main body, and an operating member transmission-connected to the support assembly, the support assembly including a plurality of support units, each of the support units including a first support frame and a second support frame connected to the first support frame, the support assembly having an unfolded state of the first support frame, in which the support length of the support unit is a first length, the support assembly having an unfolded state of the second support frame, in which the support length of the support unit is a second length, the second length being greater than the first length, the operating member transmission-connected to the second support frame, the operating member being used to adjust the support length of the second support frame so that the support length of the support unit is between the first length and the second length, and the support length of at least one of the plurality of support units, the second support frame, is individually adjustable.

[0006] On the other hand, the utility model provides a surgical device, comprising the above-mentioned suspension device and a suspension arm connected to the suspension device.

[0007] Compared with the prior art, in the surgical equipment and suspension device provided by the utility model, the support assembly has a first support frame and a second support frame, and the second support frame can be adjusted separately between a first length and a second length, so that the support assembly can have a variety of different unfolding sizes, which can more fully lift the abdominal wall or avoid the support assembly from puncturing the abdominal wall tissue.

[0008] In some embodiments, the suspension device includes a locking assembly, which is used to lock or unlock the second support frame relative to the main body. When the locking assembly is in an unlocked state, the support length of the second support frame is adjustable; when the locking assembly is in a locked state, the support length of the second support frame remains fixed.

[0009] With such arrangement, the second operating member can be fixed by the lock assembly, thereby fixing the second support frame relative to the first support frame, so that the support assembly can be stably maintained in the desired unfolded state, preventing the second support frame from being accidentally retracted due to accidental touch.

[0010] In some embodiments, the lock assembly includes a locking member movably connected to the operating member, an elastic member arranged between the operating member and the locking member, and a first mating member arranged on the main body; the locking member compresses or releases the elastic member so that the locking member has a first position or a second position relative to the operating member, and when the locking member is in the first position, the locking member cooperates with the first mating member to lock, and the lock assembly is in a locked state; when the locking member is in the second position, the locking member withdraws from the first mating member, and the lock assembly is in an unlocked state.

[0011] With such arrangement, the locking member and the first matching member can be automatically locked by the elastic member, which is simple and easy to operate.

[0012] In some embodiments, the lock assembly includes a locking member connected to the operating member and a plurality of first mating members connected to the main body; a bracket is provided in the main body, and the plurality of first mating members are arranged on the bracket and distributed along the axial direction of the main body, and when the second support frame is in the unfolded state, the locking member cooperates and locks with one of the plurality of first mating members.

[0013] With this arrangement, different first mating members interact with the locking member to fix the second operating member at different positions, so that the second support frame can be fixed at different positions relative to the second support frame, and the support assembly can be maintained at a variety of different unfolded sizes.

[0014] In some embodiments, the operating member includes a first operating member and a second operating member, the first operating member is transmission-connected to the first support frame, and the first support frame is rotationally connected to the main body; the second support frame is movably connected to the first support frame, and is transmission-connected to the second operating member; the first operating member is used to drive the first support frame to rotate relative to the main body to switch the first support frame to a closed state or an expanded state; when the first support frame is in the expanded state, the second operating member can drive the second support frame to move relative to the first support frame to adjust the support length of the second support frame.

[0015] With such arrangement, the states of the first support frame and the second support frame are adjusted respectively by two operating members, so that the transmission efficiency is higher and misoperation is less likely to occur.

[0016] In some embodiments, a transmission rod is slidably provided in the bracket, the proximal end of the transmission rod is fixedly connected to the first operating member, and the distal end is movably connected to the first support frame, and the locking assembly also includes a plurality of second mating members provided on the transmission rod. In the unfolded state of the first support frame, the plurality of second mating members are connected one by one with the plurality of first mating members, and the locking member simultaneously cooperates and locks with one of the plurality of first mating members and one of the plurality of second mating members to simultaneously lock the support lengths of the first support frame and the second support frame.

[0017] With such arrangement, the support assembly can be retracted to a closed state only when each support unit is adjusted to the first length and the second operating member is separated from the first and second matching members. This can limit the deployment sequence and the closure sequence of the entire support assembly and reduce surgical risks.

[0018] In some embodiments, the operating member includes a first operating member, the first operating member is movably connected to the main body, the first operating member is transmission connected to the first support frame, and the first operating member is used to drive the first support frame to switch to a closed state or an unfolded state; the first operating member is also transmission connected to the second support frame, and the first operating member is used to adjust the support length of the second support frame.

[0019] With such arrangement, the first support frame and the second support frame can be driven by the same operating member, which can further simplify the overall appearance structure and facilitate user operation.

[0020] In some embodiments, the second operating member is connected to the second supporting frame via a transmission assembly, and the transmission assembly includes at least one connecting rod, a proximal end of the connecting rod is hinged to the second operating member, and a distal end of the connecting rod is hinged to the second supporting frame.

[0021] With such arrangement, by hingedly connecting the second operating member and the second support frame with a connecting rod, transmission can be performed more effectively between the two and the force direction can be changed, so that the axial movement of the second operating member can be converted into telescopic movement of the second support frame relative to the first support frame.

[0022] In some embodiments, the first support frame has a cavity, the cavity is connected to the second support frame in a sliding fit, a portion of the transmission assembly is accommodated in the cavity, and another portion is accommodated in the main body.

[0023] With such arrangement, the transmission assembly is partially accommodated in the cavity of the first support frame, which can play a certain guiding role in the movement of the second support frame, so that the size adjustment of the support assembly is smoother.

[0024] In some embodiments, when the second support frame is in a closed state, the length of the portion of the transmission assembly accommodated in the main body is greater than the length accommodated in the cavity; when the second support frame is in an expanded state, the length of the portion of the transmission assembly accommodated in the main body is less than the length accommodated in the cavity.

[0025] With such arrangement, the arrangement of the transmission assembly does not affect the overall structure and size of the suspension device, and the movement of the transmission assembly in the second support frame and the main body is smoother.

[0026] In some embodiments, the main body is provided with a slide groove extending along the axial direction of the main body, the second operating member is partially disposed in the slide groove and is slidably connected to the main body through the slide groove, the length of the slide groove is equal to the difference between the second length and the first length, the number of the second operating members, the slide grooves and the second support frames is equal and corresponding, and each of the second operating members passes through one of the slide grooves and is transmission-connected to a corresponding second support frame.

[0027] With such a configuration, the main body can not only guide the axial movement of the second operating member to avoid deviation and jamming, but also adjust the distance the second support frame moves relative to the first support frame by observing the distance the second operating member moves relative to the slide slot, thereby further improving the stability and convenience of operation.

[0028] In some embodiments, the first connecting member forms a wedge-shaped portion corresponding to each of the transmission components, and the transmission component forms a groove corresponding to the wedge-shaped portion; when the support component is in a closed state, the wedge-shaped portion is embedded in the groove; or, the first operating member is connected to the first connecting member or the second connecting member through a transmission rod, and the main body also includes a sleeve that is ringed around the transmission rod, and a smoke exhaust channel is formed between the transmission rod and the sleeve, and a smoke exhaust hole is provided at the proximal end of the sleeve, and the smoke exhaust hole connects the smoke exhaust channel with the outside world; or, a plurality of through holes are provided in the main body, and the through holes extend along the axial direction of the main body; the transmission component also includes a pressure rod, which is slidably inserted into the through hole, and the number of through holes corresponds one by one to the pressure rod and the support unit, the proximal end of the pressure rod is fixedly connected to the second operating member, and the distal end is rotatably connected to the transmission component.

[0029] With such arrangement, in the closed state, the wedge-shaped portion can cooperate with the transmission assembly for positioning; in the expanded state, the wedge-shaped portion facilitates the sliding of the connecting rod, making the sliding of the second support frame smoother; the smoke exhaust channel facilitates the discharge of smoke and the like during the operation, allowing the doctor to maintain a clear field of vision and facilitate the surgical operation.

[0030] In some embodiments, the first support frame includes a first support arm and a second support arm rotatably connected to each other, the proximal end of the first support arm is rotatably connected to the main body, and the distal end of the second support arm is transmission-connected to the first operating member; the second support frame includes a third support arm, the proximal end of the third support arm is transmission-connected to the second operating member, and the distal end is slidably connected to the first support arm; when the first operating member is subjected to force, the second support arm and the first support arm of each support unit are driven to rotate relative to each other to switch the first support frame to a closed state or an expanded state. When the first support frame is in the expanded state, each of the second operating members can independently drive the third support arm and the first support arm of one of the support units to slide relative to each other so that the second support frame support length; the support assembly also includes a first connecting member and a second connecting member, the first connecting member and the second connecting member can move relatively in the axial direction of the main body, the first support arms of the multiple support units are arranged around the first connecting member and are respectively hinged to the first connecting member, and the second support arms of the multiple support units are arranged around the second connecting member and are respectively hinged to the second connecting member; the second connecting member is arranged at the distal end relative to the first connecting member, the length of the first support arm is greater than the length of the second support arm, the proximal end of the first support arm is hinged to the first connecting member, the distal end of the second support arm is hinged to the second connecting member, and the proximal end of the second support arm is hinged between the middle and distal ends of the first support arm.

[0031] With such an arrangement, each support arm can move relative to each other, adjusting the states of the first support frame and the second support frame so that they can better match the size of the space in the abdominal cavity; at the same time, each support arm forms a triangular structure after unfolding, which can stably lift the abdominal wall to form the space required for surgical operations, thereby improving the success rate of the operation.

[0032] In some embodiments, the plurality of support units are spaced apart in the circumferential direction of the main body, and any two adjacent support units form a space in the circumferential direction, wherein a width of one of the space is at least different from a width of another of the space.

[0033] With such an arrangement, the distribution of the support units can match the distribution of the robotic arms of the surgical device, thereby reducing the interference problem between the surgical instruments and adjacent support units. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 It is a schematic diagram of a suspension device according to an embodiment of the utility model in a closed state.

[0036] Figure 2 for Figure 1 Exploded view of the suspension shown.

[0037] Figure 3 for Figure 1 An axial cross-sectional view of the suspension device shown.

[0038] Figure 4 for Figure 1 A schematic diagram of the suspension device shown in the unfolded state of the first support frame.

[0039] Figure 5 for Figure 4 A top view of the suspension device shown.

[0040] Figure 6 for Figure 4 An axial cross-sectional view of the suspension device shown.

[0041] Figure 7 for Figure 1 A schematic diagram of the suspension device shown in the unfolded state of the second support frame.

[0042] Figure 8 for Figure 7 A top view of the suspension device shown.

[0043] Fig. 9 for Figure 7 An axial cross-sectional view of the suspension device shown.

[0044] Fig.10 for Figure 1 A schematic diagram of an intermediate state of the suspension device shown.

[0045] Fig.11 for Fig.10 A top view of the suspension device shown.

[0046] Fig.12 for Figure 1 A schematic diagram of another intermediate state of the suspension device shown.

[0047] Fig.13 for Figure 1 A schematic diagram of another intermediate state of the suspension device shown.

[0048] Fig.14 for Figure 1 A schematic diagram of the locking member of the suspension device shown in the second position.

[0049] Fig.15 for Figure 1 A schematic diagram of the locking member of the suspension device shown in the third position.

[0050] Fig.16 It is a schematic diagram of a suspension device according to another embodiment of the present invention in an expanded state of a first support frame.

[0051] Fig.17 for Fig.16 Schematic diagram of the internal structure of the suspension device shown.

[0052] Fig.18 for Fig.16 A schematic diagram of the suspension device shown in the unfolded state of the second support frame. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are intended to facilitate the description of the present invention and simplify the description, rather than to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0056] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] It should be noted that the terms "proximal end" and "distal end" used below can be understood according to the common meaning in the field of medical devices, where "proximal end" refers to the end close to the operator (such as a doctor, etc.); "distal end" refers to the end away from the operator.

[0058] The utility model provides a suspension device, which is mainly used in laparoscopic surgery without pneumoperitoneum or with low-pressure pneumoperitoneum. In conventional pneumoperitoneoscopic surgery, the pneumoperitoneum pressure is usually set at 12-13 mmHg to ensure sufficient pneumoperitoneum operation space and a stable surgical field. Low-pressure pneumoperitoneoscopic surgery reduces the pneumoperitoneum pressure to 7-8 mmHg, thereby reducing the impact of pneumoperitoneum pressure on the heart and lungs during laparoscopic surgery. However, due to the decrease in abdominal pressure, the abdominal operation space is reduced, so a suspension device is needed to assist in lifting the abdominal wall. Figure 1-3 As shown, in a specific embodiment of the present invention, the suspension device 100 includes a main body 10 , a support assembly 20 movably connected to the main body 10 , and an operating member 30 drivingly connected to the support assembly 20 .

[0059] The support assembly 20 includes a plurality of support units 21, each of which includes a first support frame 23 and a second support frame 25 connected to the first support frame 23. The support assembly 20 has an expanded state of the first support frame, such as Figure 4-6 As shown, in the unfolded state of the first support frame, the support length of the support unit 21 is the first length L1; the support assembly 20 also has an unfolded state of the second support frame, as shown Figure 7-9 As shown, in the unfolded state of the second support frame, the support length of the support unit 21 is the second length L2, wherein the second length L2 is greater than the first length L1. In the present utility model, "the unfolded state of the first support frame" refers to the state in which the first support frame 23 is fully unfolded and the second support frame 25 is not unfolded; "the unfolded state of the second support frame" refers to the state in which the first support frame 23 is fully unfolded and the second support frame 25 is fully unfolded.

[0060] The operating member 30 is in transmission connection with the second support frame 25, and is used to adjust the support length of the second support frame 25, so that the support length of the support unit 21 is between the first length L1 and the second length L2. In the present invention, the support length of at least one second support frame 25 among the multiple support units 21 is individually adjustable, so that the support length of the support unit 21 can be the same as or different from the support lengths of other support units 21. In the present invention, the first length L1 refers to the shortest length of the abdominal wall that the support unit 21 can effectively support when the first support frame is in the unfolded state; the second length L2 refers to the longest length of the abdominal wall that the support unit 21 can effectively support when the second support frame is in the unfolded state.

[0061] When the support assembly 20 is unfolded, the length of its support unit 21 can be adjusted between a first length L1 and a second length L2, without increasing the size of the support assembly 20 in the closed state. Instead, the support length of each support unit 21 when unfolded is increased, thereby reducing the requirement for the longitudinal space of the abdominal cavity and increasing the area of ​​the abdominal wall lifted by the support assembly 20.

[0062] The operating member 30 includes a first operating member 40 and a second operating member 60 that are movably connected to the main body 10. The first operating member 40 is connected to the first support frame 23 in a transmission manner, and the first support frame 23 is connected to the main body 10 in a rotational manner. The second support frame 25 is connected to the first support frame 23 in a movably manner and is connected to the second operating member 60 in a transmission manner. The first operating member 40 is used to drive the first support frame 23 to rotate relative to the main body 10 to switch the first support frame 23 to a closed state or an unfolded state. When the first support frame 23 is in the unfolded state, the second operating member 60 can drive the second support frame 25 to move relative to the first support frame 23 to adjust the support length of the second support frame 25.

[0063] The support assembly 20 can be folded or unfolded by the first operating member 40, and the support assembly 20 can be adaptively adjusted according to the size of the space in the patient's abdominal cavity by the second operating member 60, so that the support assembly 20 has different unfolding states and thus different unfolding sizes.

[0064] In other embodiments, the operating member 30 may also include only the first operating member 40, but not the second operating member 60. In this case, the first operating member 40 may be not only transmission-connected to the first support frame 23, but also transmission-connected to the second support frame 25. In addition to being used to adjust the state of the first support frame 23, the first operating member 40 may also be used to adjust the support length of the second support frame 25.

[0065] like Figure 2 As shown, the support assembly 20 includes a plurality of support units 21 arranged at intervals along the circumferential direction, and the second support frame 25 of each support unit 21 is slidably connected to the first support frame 23. In other embodiments, the first support frame 23 and the second support frame 25 can also be movably connected in other ways, including but not limited to hinged, rotating connection and other connection methods. In another embodiment, the first support frame 23 and the second support frame 25 can also be an integrated structure.

[0066] In a specific embodiment, the first support frame 23 includes a first support arm 23a and a second support arm 23b, the second support arm 23b is rotatably connected to the first support arm 23a, the proximal end of the first support arm 23a is rotatably connected to the main body 10, and the distal end of the second support arm 23b is transmission connected to the first operating member 40; the second support frame 25 includes a third support arm, the proximal end of the third support arm 25 is transmission connected to the second operating member 60, and the distal end of the third support arm 25 is slidably connected to the first support arm 23a.

[0067] When the first operating member 40 is subjected to force, the second supporting arm 23b and the first supporting arm 23a of the supporting unit 21 are driven to rotate relative to each other, and the first supporting frame 23 of the supporting assembly 20 is switched to a closed state or an unfolded state; when the second operating member 60 is subjected to force, the third supporting arm 25 and the first supporting arm 23a of the supporting unit 21 are driven to slide relative to each other, and the supporting length of the supporting unit 21 is adjusted. Here, the force applied to the first operating member 40 and the second operating member 60 can be a force applied directly or indirectly to them by an operator, a motor or an elastic structure.

[0068] In another specific embodiment, the first support frame 23 may only include the first support arm 23a. When the first operating member 40 is subjected to force, the first support arm 23a of the support unit 21 is driven to rotate relative to the main body 10, switching the support assembly 20 to a closed state or an unfolded state.

[0069] In this embodiment, the support assembly 20 further includes a first connecting member 27 and a second connecting member 29, which are arranged along the axial direction of the support assembly 20 and can move relatively in the axial direction. According to the direction shown in the figure, the second connecting member 29 is arranged at the distal end relative to the first connecting member 27, and the outer surface of the second connecting member 29 facing away from the first connecting member 27 is a smooth arc surface. Each support unit 21 is arranged around the first connecting member 27 and the second connecting member 29, wherein the proximal end of each first support arm 23a is rotatably connected to the first connecting member 27, and the distal end of each second support arm 23b is rotatably connected to the second connecting member 29.

[0070] Preferably, the length of the first support arm 23a is greater than the length of the second support arm 23b, and the proximal end of each second support arm 23b is rotatably connected to the middle of a corresponding first support arm 23a. In other embodiments, the lengths of the first support arm 23a and the second support arm 23b may be equal, and the proximal end of the second support arm 23b is rotatably connected to the distal end of the corresponding first support arm 23a. In other embodiments, the length of the first support arm 23a may also be less than the length of the second support arm 23b, as long as the abdominal wall can be supported in the unfolded state.

[0071] The first operating member 40 drives the first connecting member 27 and the second connecting member 29 to move relative to each other in the axial direction, thereby driving the first supporting arm 23a and the second supporting arm 23b to rotate relative to each other, so that the supporting assembly 20 has an expanded state of the first supporting frame. Figure 1 As shown, the support assembly 20 is in a closed state, and the second support arm 23b is stacked on the inner side of the first support arm 23a. The overall structure is a slender rod-shaped structure that can enter or exit the abdominal cavity through the abdominal wall opening. Figure 4-5 As shown, each support unit 21 has a first length L1, and the support assembly 20 as a whole is generally an umbrella-shaped structure, which can support a circular abdominal wall area with a radius of L1.

[0072] In other embodiments, when the first support frame is in the unfolded state, the lengths of the support units 21 may not be equal, and the normal length of each support unit 21 may be designed according to actual needs. When the first support frame is in the unfolded state, the first support arm 23a and the second support arm 23b are arranged at an angle to each other, which can increase the support force when lifting the patient's abdominal wall, and form an operating space in the abdominal cavity, which is convenient for laparoscopic surgery.

[0073] The third support arm 25 and the first support arm 23a are driven to slide relative to each other through the second operating member 60, so that the support assembly 20 has an expanded state of the second support frame. In the expanded state of the second support frame, the support length of the support unit 21 can be adjusted as needed to adapt to the intra-abdominal space of different patients.

[0074] As a preferred solution, each support unit 21 is individually configured with a second operating member 60, and the second operating member 60 can be a manual mechanical structure, or an electric drive device such as a motor. Each second operating member 60 can be manually or electrically driven to move synchronously in the axial direction, so that the support length of each support unit 21 increases or decreases synchronously. Alternatively, each support unit 21 is individually configured with a second operating member 60, some second operating members 60 can be manually or electrically driven to move synchronously in the axial direction, and other second operating members 60 can remain stationary or move asynchronously, so that the support length of each support unit 21 changes asynchronously.

[0075] In another embodiment, two or more of the plurality of support units 21 may be configured with a second operating member 60. It is understandable that the plurality of support units 21 may be configured with only one second operating member to achieve the purpose of synchronously adjusting the support lengths of the support units 21.

[0076] like Figure 7-8 As shown, when each third support arm 25 is fully extended, the support length of each support unit 21 is the second length L2, and the support assembly 20 has a second support frame expanded state, which can support a circular abdominal wall area with a radius of L2. In some applications, each third support arm 25 may not be fully extended. At this time, the support length of each first support unit 21 can be synchronously adjusted between the first length L1 and the second length L2, so that the support assembly 20 can also have an intermediate state. Fig.12 As shown, in one of the intermediate states, the support length of each first support unit 21 may be L3, and the support assembly 20 can support a circular abdominal wall area with a radius of L3, wherein L2>L3>L1.

[0077] Alternatively, one or more of the second operating members 60 may be driven separately, so that the support length of one or more of the support units 21 is different from the support length of other support units 21. Figure 10-11 As shown, in another intermediate state, the support arms 25 of two support units 21 are not fully extended, and the corresponding support lengths are L4 and L5 respectively. The support arms 25 of the other three support units 21 are fully extended, and the corresponding support length is L2, wherein L2>L4>L5>L1. Fig.13 As shown, the extension lengths of the first support units 21 may also be different. In this case, the support lengths of the five support units 21 are L1, L2, L3, L4, and L5, respectively, wherein L2>L3>L4>L5>L1.

[0078] Usually, when inserting the suspension device 100 into the patient's body, it is necessary to make an incision below the patient's navel, and then insert the support assembly 20 of the suspension device 100. After entering the abdominal cavity, the support assembly 20 is located in the lower center of the abdominal cavity, which is not conducive to some operations. For example, for liver-related operations, since the liver is on the right, it is hoped that the space on the right side of the abdominal cavity can be larger, and the left side does not need to be too large. When using the suspension device 100 of the utility model, after the support assembly 20 is unfolded in the abdominal cavity, the support assembly 20 can be further adjusted by the second operating member 40, such as making the third support arm 25 of the support unit 21 at the left side of the abdominal cavity partially extend relative to the first support arm 23a, and the third support arm 25 of the support unit 21 at the right side of the abdominal cavity is fully extended relative to the first support arm 23a. In this way, the right side portion of the support assembly 20 has a larger size than the left side portion, and can open up a larger space on the right side of the abdominal cavity, see. Fig.11 , Fig.13 .

[0079] It should be understood that, through the second operating member 60, the third support arm 25 of the left support unit 21 can also be extended to a greater length relative to the first support arm 23a to open up a larger space on the left side of the abdominal cavity to accommodate the surgery to be performed on the left organs.

[0080] Similarly, for patients with special body types who are overweight or thin, the abdominal space that can be pulled is also different. For example, for patients with overweight body types, their bodies are wide and their abdominal space is short. At the same time, the width of the abdominal space in the waistline direction is greater than its length in the direction perpendicular to the waistline. Therefore, the support unit 21 can be adjusted to make the third support arm 25 fully or partially extend relative to the first support arm 23a in the left and right directions of the abdominal cavity, and in the direction perpendicular to the left and right directions of the abdominal cavity, the third support arm 25 of the support unit 21 is adjusted not to extend relative to the first support arm 23a. If the length of the support unit 21 is not adjustable, the abdominal cavity cannot be pulled up to the left and right, and the abdominal cavity is excessively pulled in the front and back directions, resulting in abdominal wall injuries. For example, for patients with thin body types, their bodies are narrow, and the principle is the same as above.

[0081] In some applications, the support lengths of each support unit 21 may be different, see Fig.13 Through the structure of the above embodiment, the length of each third support arm 25 can be accurately controlled to lift the abdominal wall of a designated area in a targeted manner, thereby adapting to more surgical procedures.

[0082] The directional descriptions such as "front", "back", "left", and "right" in the above embodiments are for Figure 6In summary, after the support assembly 20 is expanded by the first operating member 40, the support length of the support unit 21 of the support assembly 20 can be further adjusted by the second operating member 60 to match different patients; moreover, by setting a plurality of second operating members 60, the support length of each support unit 21 can be adjusted according to the requirements of the specific operation on the operation space, so as to form a proper space in the abdominal cavity, which is conducive to improving the convenience and success rate of the operation.

[0083] The support units 21 are spaced apart in the circumferential direction, and a gap is formed between any two adjacent support units 21. The sizes of the gaps can be the same or different. Figure 5 As shown, in a specific embodiment, the support assembly 20 includes 5 support units 21, wherein two intervals have the same width, and the corresponding central angles are both α1; the width of one interval is different from that of the other intervals, and the corresponding central angle is α2; the other two intervals have the same width, and the corresponding central angles are both α3, where α1>α2>α3, and 2*(a1+α3)+α2=360°.

[0084] In this embodiment, there are five support units 21. A hole is usually opened at the interval between each two adjacent support units 21 to place five surgical instruments, including an endoscope. The incision for placing the endoscope is usually opened at the interval with a central angle of α2. When performing surgical operations, the orientation of the support assembly 20 can be determined according to the distribution of the robotic arms of the surgical equipment. The incisions for major surgical instruments are usually opened at intervals with relatively larger central angles, such as at intervals with a central angle of α1. Because the major surgical instruments are mainly used for major surgical operations and have a larger range of motion, such a setting can reduce the interference problem between the surgical instruments and the adjacent support units 21.

[0085] In other embodiments, the number of support units 21 can be changed as needed, as long as the number can support the abdominal wall. Similarly, to be suitable for surgical robot laparoscopic surgery, the spacing between support units 21 with other numbers can also be adjusted according to actual conditions, such as producing suspension devices with different spacing specifications, or different numbers of support units 21, or different lengths of support units 21. According to a variation of this embodiment, the spacing between support units 21 can also be made movable and adjustable.

[0086] The first operating member 40 can be a manual mechanical structure, or an electric drive device such as a motor. In a specific embodiment, the first operating member 40 is a lifting ring, and the lifting ring 40 is connected to the second connecting member 29 through a transmission rod 84 (such as Figure 3As shown in the figure, the main body 10 has an internal passage with two ends through it, and the transmission rod 84 passes through the internal passage. When the first operating member 40 is subjected to / outputs an axial force, the second connecting member 29 is driven to move axially relative to the first connecting member 27. Preferably, the first connecting member 27 and the second connecting member 29 are coaxially arranged, and the outer diameters of the two are comparable. An axial hole 271 is formed in the center of the first connecting member 27, and the transmission rod 84 is slidably inserted into the axial hole 271. The distal end of the transmission rod 84 is fixedly connected to the second connecting member 29, and the proximal end is fixedly connected to the first operating member 40. In some embodiments, the transmission rod 84, the second connecting member 29, and the first operating member 40 can also be an integral structure.

[0087] like Figure 1-3 As shown, when the support assembly 20 is in the closed state, the first support arm 23a and the second support arm 23b are against the outer wall of the transmission rod 84, and the rotation connection point between the first support arm 23a and the second support arm 23b is located at a side position of the first support arm 23a. The first connecting member 27 and the second connecting member 29 are spaced apart in the axial direction. Figure 4-6 As shown, when the first operating member 40 drives the second connecting member 29 to move toward the first connecting member 27, the first supporting frame 23 of the supporting assembly 20 is unfolded, and the first supporting arm 23a and the second supporting arm 23b rotate relative to each other to form a certain angle. At the same time, the first supporting arm 23a rotates relative to the first connecting member 27, and the second supporting arm 23b rotates relative to the second connecting member 29, and they are respectively inclined at a certain angle relative to the axial direction. On the contrary, when the second connecting member 29 moves away from the first connecting member 27, the first supporting frame 23 of the supporting assembly 20 is folded, and the first supporting arm 23a and the second supporting arm 23b return to the overlapping state and abut against the outer wall of the transmission rod 84.

[0088] Preferably, the outer wall surface of the first support arm 23a is a smooth arc surface. When the support assembly 20 is folded, the outer wall surface of the first support arm 23a is located on a common cylindrical surface, that is, the outer peripheral surface formed by the first support arm 23a is roughly a cylindrical surface, and the diameter of the cylindrical surface is equivalent to the outer diameter of the first connecting member 27 and the second connecting member 29, which facilitates the support assembly 20 to puncture into the abdominal cavity. In addition, when the support assembly 20 punctures into the abdominal cavity, the smooth arc surface of the second connecting member 29 can effectively avoid unnecessary damage to the abdominal wall.

[0089] In a specific embodiment, the second operating member 60 is connected to the second support frame 25 through a transmission assembly 70, and the transmission assembly 70 includes at least one connecting rod 72, the proximal end of the connecting rod 72 is hinged to the second operating member 60, and the distal end is hinged to the second support frame 25. Here, the second operating member 60 can be a pressing plate, and each pressing plate 60 is connected to the third support arm 25 of a corresponding support unit 21 through a transmission assembly 70. When the second operating member 60 is subjected to an axial force, the transmission assembly 70 converts it into a force along the length direction of the first support arm 23a, so that the third support arm 25 moves telescopically relative to the first support arm 23a. According to the different lengths of the third support arm 25 extending out, the support unit 21 can have different support lengths. In this embodiment, the transmission assembly 70 includes a plurality of connecting rods 72 connected in sequence and hinged to each other, wherein the two connecting rods 72 located at the head and tail ends are respectively hinged to the second operating member 60 and the third support arm 25.

[0090] In a specific embodiment, the first support frame 23 has a cavity, and the cavity is slidably connected with the second support frame 25. A part of the transmission assembly 70 is accommodated in the cavity, and another part is accommodated in the main body 10. Figure 6 , Figure 8 As shown, when the second operating member 60 moves in the axial direction, for example, from top to bottom along the axial direction, one or more connecting rods 72 near the third support arm 25 are deflected at a certain angle and follow the direction of the first support arm 23a, pushing the third support arm 25 to slide outward relative to the first support arm 23a, further increasing the support length of the support unit 21, thereby increasing the overall expansion size of the support assembly 20. For another example, when the second operating member 60 moves in the axial direction from bottom to top, the third support arm 25 can be retracted into the first support arm 23a in the opposite direction.

[0091] Preferably, the cavity of the first support frame 23 is a through slot 231 disposed inside the first support arm 23a; the third support arm 25 is movably disposed in the through slot 231, and its distal end passes through the through slot 231 and extends out of the first support arm 23a. Preferably, a head 251 is disposed at the distal end of the third support arm 25, and the size of the head 251 is larger than the through slot 231, so that the third support arm 25 will not be pulled away from the first support arm 23a. Preferably, the outer wall surface of the head 251 forms an arc chamfer to avoid scratching the abdominal wall. In other embodiments, the head 251 can also be retracted into the first support arm 23a. Here, the first length L1 is the length of the first support arm 23a plus the length of the head 251. The second length is the length of the first support arm 23a plus the extended length of the third support arm 25, plus the length of the head 251.

[0092] In this embodiment, when the first support frame 23 is in a closed state or an unfolded state, the length of the portion of the transmission assembly 70 accommodated in the main body 10 is greater than the length accommodated in the cavity, and when the second support frame 25 is in an unfolded state, the length of the portion of the transmission assembly 70 accommodated in the main body 10 is less than the length accommodated in the cavity. Advantageously, the connecting rod 72 is used as the transmission assembly 70, so that the force of the second operating member 60 along the axial direction of the main body toward the transmission assembly 70 can be converted into the force of the transmission assembly driving the third support arm 25 to move, thereby improving the efficiency of force transmission, changing the direction of force, and better transmitting force. In addition, the connecting rod 72 is made of a rigid material, which is easy to clean and disinfect, has a long service life, and is easy to reuse.

[0093] like Figure 2 As shown, the main body 10 is a hollow cylindrical structure with two ends connected, and the main body 10 is provided with a slide groove 12 corresponding to each second operating member 60, and the slide groove 12 extends along the axial direction of the main body 10. The length of the slide groove 12 is equal to the length of the third support arm 25 telescoped relative to the first support arm 23a, that is, it is equivalent to the difference between L2 and L1. In some embodiments, the length of the third support arm 25 telescoped relative to the first support arm 23a is equivalent to the length of the third support arm 25 itself.

[0094] The second operating member 60 is partially disposed in the slide slot 12 and is slidably connected to the main body 10 through the slide slot 12. The number of the second operating member 60, the slide slot 12 and the second support frame 25 is equal and corresponding. Each second operating member 60 passes through one of the slide slots 12 and is transmission-connected to a corresponding second support frame 25. The second operating member 60 is movably disposed in the slide slot 12 and can move along the slide slot 12 in the axial direction to avoid the occurrence of jamming due to deflection. In the radial direction, the second operating member 60 at least partially extends out of the slide slot 12, which is convenient for the user to operate. During the operation, the second operating member 60 is exposed outside the body, while the support assembly 20 is located inside the body and is not easy to observe. Through the structure disclosed in the above embodiment, the distance moved by the second operating member 60 relative to the slide slot 12 has a one-to-one correspondence with the distance moved by the third support arm 25 relative to the first support arm 23a. That is, the distance moved by the third support arm 25 relative to the first support arm 23a can be adjusted by observing the distance moved by the second operating member 60 relative to the slide slot 12.

[0095] Furthermore, a sensor can also be installed on the main body 10 or the second operating member 60 to determine the distance the second operating member 60 moves relative to the slide slot 12, or a sensor can be installed on the third support arm 25 relative to the first support arm 23a to facilitate the user to determine whether the third support arm 25 is extended into place.

[0096] The suspension device 100 further includes a lock assembly 50, which is used to lock or unlock the second support frame 25 relative to the main body 10. When the lock assembly 50 is in an unlocked state, the support length of the second support frame 25 can be adjusted; when the lock assembly 50 is in a locked state, the support length of the second support frame 25 remains fixed.

[0097] In a specific embodiment, the lock assembly 50 includes a locking member 62 connected to the operating member 30 and a plurality of first matching members 82 connected to the main body 10. The bracket 80 is disposed in the main body 10, and the main body 10 and the bracket 80 are coaxially disposed and radially spaced apart, and a space is formed between the two for installing the transmission assembly 70. The bracket 80 is fixedly disposed relative to the first connecting member 27, and each second operating member 60 and the corresponding transmission assembly 70 are disposed around the bracket 80. The plurality of first matching members 82 are distributed on the bracket 80 along the axial direction of the main body 10, and in the unfolded state of the first support frame, the locking member 61 is matched and locked with one of the plurality of first matching members 82.

[0098] The bracket 80 is provided with a first matching piece 82 corresponding to each second operating piece 60, and each second operating piece 60 is provided with a locking piece 62 that matches with the first matching piece 82. Through the matching and locking of the first matching piece 82 and the locking piece 62, the second operating piece 60 can be fixed in the axial direction, and then the third support arm 25 can be fixed relative to the first support arm 23a, so that the support assembly 20 can be stably maintained in the desired unfolded state, and the third support arm 25 can be prevented from being accidentally retracted due to accidental touch. There are multiple first matching pieces 82 and / or locking pieces 62 and they are arranged along the axial direction. Different first matching pieces 82 and locking pieces 62 interact with each other to fix the second operating piece 60 at different axial positions, so that the third support arm 25 can be fixed at different positions relative to the first support arm 23a, and the support assembly 20 can be maintained in a variety of different unfolded sizes.

[0099] In this embodiment, the first matching member 82 is a plurality of positioning grooves provided on the bracket 80, and the locking member 62 is a positioning block slidably provided on the second operating member 60. The locking member 62 moves in the radial direction relative to the bracket 80 and has a first position and a second position. In the first position, Fig. 9 As shown, the locking member 62 is engaged with one of the first matching members 82 to fix the second operating member 60 in the axial direction; in the second position, as shown in FIG. Fig.14 As shown, the locking member 62 exits the first matching member 82, and the second operating member 60 can slide in the axial direction to adjust the position of the third support arm 25. It should be understood that a positioning block can also be formed on the bracket 80, and a positioning groove can be correspondingly provided on the second operating member 60, and the second operating member 60 can be positioned in the axial direction by the clamping of the positioning block and the positioning groove. In addition, a single positioning groove can be matched with multiple positioning blocks; or multiple positioning grooves can be matched with multiple positioning blocks, which is not limited to the specific embodiment.

[0100] Preferably, the lock assembly 50 further includes an elastic member 64, such as a coil spring, disposed between the second operating member 60 and the locking member 62. The locking member 62 compresses or releases the elastic member 64 so that the locking member 62 has a first position or a second position relative to the second operating member 60. When the locking member 62 is in the first position, the locking member 62 cooperates with the first mating member 82 to lock, and the lock assembly 50 is in a locked state; when the locking member 62 is in the second position, the locking member 62 withdraws from the first mating member 82, and the lock assembly 50 is in an unlocked state. When the locking member 62 is in the second position, the elastic member 64 is deformed by force; when the elastic member 64 recovers the deformation, it pushes the locking member 62 back to the first position. In this way, after the locking member 62 is released, it can automatically reset, cooperate with the first mating member 82 to lock, and position the second operating member 60 in the axial direction. In other embodiments, the locking member 62 can also be moved by means including but not limited to electric drive.

[0101] In this embodiment, the periphery of the first connecting member 27 forms a wedge-shaped portion 273 corresponding to each transmission assembly 70, and the connecting rod 72 at the farthest end of the transmission assembly 70 forms a groove 73. When the support assembly 20 is in the closed state, the wedge-shaped portion 273 is embedded in the groove 73 of the corresponding connecting rod 72 to form a self-locking, so that the third support arm 25 cannot slide relative to the first support arm 23a. When the support assembly 20 is in the unfolded state and adjusted between the first length L1 and the second length L2, the wedge-shaped portion 273 can serve as a support on the movement path of the transmission assembly 70, so that the transmission assembly 70 can smoothly move between the main body 10 and the first support arm 23a, avoiding jamming or the transmission assembly 70 being out of the movement path during movement.

[0102] like Figure 2 As shown, the bracket 80 is a hollow cylindrical structure, and the transmission rod 84 is movably arranged in the bracket 80. The lock assembly 50 also includes a plurality of second matching pieces 86 arranged on the outer wall of the transmission rod 84, and the locking piece 62 is simultaneously locked with one of the plurality of first matching pieces 82 and one of the plurality of second matching pieces 86 to simultaneously lock the support lengths of the first support frame 23 and the second support frame 25. In this embodiment, the second matching piece 86 is a card slot, and the card slot 86 is arranged at intervals along the axial direction of the transmission rod 84. When the support assembly 20 is in the closed state, as shown in FIG. Figure 3 As shown, the slot 86 on the transmission rod 84 is misaligned with the positioning slot 82 on the bracket 80; when the support assembly 20 is in the unfolded state, as shown in FIG. Figure 6 , Fig. 9 As shown, the slots 86 on the transmission rod 84 correspond to and communicate with the positioning slots 82 on the bracket 80. In the illustrated embodiment, the bracket 80 is provided with four positioning slots 82 and the transmission rod 84 is provided with four slots 86, so that the support assembly 20 can have at least four different support lengths.

[0103] like Fig.15 As shown, the locking member 62 also has a third position in the radial direction, at which time the locking member 62 is simultaneously engaged in one of the first mating members 82 and a corresponding second mating member 86, so that the transmission rod 84 and the second operating member 60 can be fixed in the axial direction relative to the bracket 80, so that after the support assembly 20 is unfolded to a predetermined length, the transmission rod 84 cannot move in the axial direction, and the support assembly 20 can be stably maintained in the unfolded state to further facilitate surgical operations. Only when each support unit 21 is adjusted to the first length L1 and each second operating member 60 is neither engaged in the positioning groove 82 nor engaged in the clamping groove 86, can the support assembly 20 be retracted to the closed state.

[0104] Furthermore, by making the transmission rod 84 and the second operating member 60 fixed in the axial direction relative to the bracket 80, the entire suspension device 100 is not easily accidentally retracted due to accidental touch during surgery. Similarly, it can also avoid the problem that the first support frame 23 is retracted when the second support frame 25 is not retracted, causing the second support frame 25 to accidentally close in the expanded state and damage the intra-abdominal tissue. In general, through such a structure, the expansion order and the closing order of the entire support assembly 20 can be limited, reducing the risk of surgery.

[0105] like Figure 2 As shown, the suspension device 100 further includes a sleeve 90 that surrounds the transmission rod 84, a smoke exhaust channel 96 is formed between the transmission rod 84 and the sleeve 90, and a smoke exhaust hole 98 is provided at the proximal end of the sleeve 90, which connects the smoke exhaust channel 96 with the outside. In this way, the smoke generated during the operation can flow along the smoke exhaust channel 96 and then be discharged outward through the smoke exhaust hole 98, so as to prevent the smoke from affecting the doctor's field of vision and thus affecting the accuracy of the surgical operation.

[0106] like Figure 3 As shown, the transmission assembly 70 further includes a pressure rod 74. A plurality of through holes are provided in the sleeve 90. The through holes extend along the axial direction of the sleeve 90 and are arranged around the transmission rod 84. A pressure rod 74 is slidably inserted into each through hole. The proximal end of the pressure rod 74 is fixedly connected to the second operating member 60, and the distal end is hinged to the nearest connecting rod 72. Through the cooperation between the pressure rod 74 and the through hole, the movement of the second operating member 60 in the axial direction can be further guided, and the freedom of movement of the second operating member 60 can be limited. In some embodiments, the pressure rod 74 and the second operating member 60 can also be an integral structure.

[0107] In this embodiment, the distal end of the sleeve 90 is fixedly connected to the first connecting member 27, and the outer diameter of the sleeve 90 is preferably equal to that of the first connecting member 27; the proximal end of the sleeve 90 is fixedly connected to the bracket 80 and the main body 10, and the space between the main body 10 and the bracket 80 is connected to the through hole of the sleeve 90. Figure 3As shown, the proximal end of the pressure rod 74 is located in the main body 10, and the distal end extends into the through hole of the sleeve 90, and the connecting rod 72 is basically located in the through hole; when the support assembly 20 is unfolded and its third support arm 25 is fully unfolded, as shown in FIG. Fig. 9 As shown, the pressing rod 74 is completely inserted into the through hole of the sleeve 90, and the connecting rod 72 is basically located in the through groove 231 of the first supporting arm 23a.

[0108] Figure 16-18 Another embodiment of the suspension device of the utility model is shown, which is different from the previous embodiment mainly in the transmission assembly 70. In this embodiment, the transmission assembly 70 includes a pressure rod 74 and a single connecting rod 72. Both ends of the connecting rod 72 are bent and are hinged to the pressure rod 74 and the third support arm 25 respectively. When the second operating member 60 drives the pressure rod 74 to move in the axial direction, the entire connecting rod 72 will produce a certain angle deflection so that its distal end can follow the extension direction of the first support arm 23a, and can also convert the axial movement of the second operating member 60 into the telescopic movement of the third support arm 25 along the first support arm 23a. In order to facilitate the deflection of the connecting rod 72, a notch 92 is provided at the distal end of the sleeve 90.

[0109] In addition, the utility model also provides a surgical device, including a suspension arm and the suspension device 100 connected to the suspension arm.

[0110] It should be noted that the above embodiments only express the preferred implementation of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, several modifications and improvements can be made, such as combining different features in various embodiments, etc., which should all fall within the scope of protection of the present invention.

Claims

1. A suspension device, It is characterized in that The invention comprises a main body, a supporting assembly movably connected to the main body, and an operating member drivingly connected to the supporting assembly, wherein the supporting assembly comprises a plurality of supporting units, each of the supporting units comprises a first supporting frame and a second supporting frame connected to the first supporting frame, The support assembly has an expanded state of a first support frame, in which the support length of the support unit is a first length. The support assembly has an expanded state of a second support frame, in which the support length of the support unit is a second length, and the second length is greater than the first length. The operating member is transmission-connected to the second support frame, and the operating member is used to adjust the support length of the second support frame so that the support length of the support unit is between the first length and the second length, and the support length of at least one of the second support frames of the multiple support units is individually adjustable.

2. The suspension device according to claim 1, It is characterized in that The suspension device includes a lock assembly, and the lock assembly is used to lock or unlock the second support frame relative to the main body. When the lock assembly is in an unlocked state, the support length of the second support frame can be adjusted; When the lock assembly is in a locked state, the supporting length of the second supporting frame remains fixed.

3. The suspension device according to claim 2, It is characterized in that The lock assembly comprises a locking member movably connected to the operating member, an elastic member arranged between the operating member and the locking member, and a first matching member arranged on the main body; the locking member compresses or releases the elastic member so that the locking member has a first position or a second position relative to the operating member, When the locking member is in the first position, the locking member cooperates with the first matching member to lock, and the lock assembly is in a locked state; when the locking member is in the second position, the locking member withdraws from the first matching member, and the lock assembly is in an unlocked state.

4. The suspension device according to claim 2, It is characterized in that The lock assembly includes a locking piece connected to the operating piece and a plurality of first mating pieces connected to the main body; a bracket is provided in the main body, and the plurality of first mating pieces are arranged on the bracket and distributed along the axial direction of the main body. When the second support frame is in the unfolded state, the locking piece cooperates and locks with one of the plurality of first mating pieces.

5. The suspension device according to claim 4, It is characterized in that The operating member includes a first operating member and a second operating member, the first operating member is connected to the first support frame in a transmission manner, and the first support frame is rotatably connected to the main body; the second support frame is movably connected to the first support frame and is connected to the second operating member in a transmission manner; The first operating member is used to drive the first support frame to rotate relative to the main body to switch the first support frame to a closed state or an unfolded state; when the first support frame is in the unfolded state, the second operating member can drive the second support frame to move relative to the first support frame to adjust the support length of the second support frame.

6. The suspension device according to claim 5, It is characterized in that A transmission rod is slidably provided in the bracket, a proximal end of the transmission rod is fixedly connected to the first operating member, and a distal end is movably connected to the first support frame, the locking assembly also includes a plurality of second mating members provided on the transmission rod, when the first support frame is in an unfolded state, the plurality of second mating members are connected one by one with the plurality of first mating members, and the locking member simultaneously cooperates and locks with one of the plurality of first mating members and one of the plurality of second mating members, so as to simultaneously lock the supporting lengths of the first support frame and the second support frame.

7. The suspension device according to claim 1, It is characterized in that The operating member includes a first operating member, and the first operating member is movably connected to the main body. The first operating member is in transmission connection with the first supporting frame, and the first operating member is used to drive the first supporting frame to switch to a closed state or an unfolded state; The first operating member is also transmission-connected to the second supporting frame, and the first operating member is used to adjust the supporting length of the second supporting frame.

8. The suspension device according to claim 5, It is characterized in that The second operating member is connected to the second supporting frame via a transmission assembly, and the transmission assembly includes at least one connecting rod, a proximal end of the connecting rod is hinged to the second operating member, and a distal end of the connecting rod is hinged to the second supporting frame.

9. The suspension device according to claim 8, It is characterized in that The first support frame has a cavity, and the cavity is connected to the second support frame in a sliding manner. A part of the transmission assembly is accommodated in the cavity, and another part is accommodated in the main body.

10. The suspension device according to claim 9, It is characterized in that When the second support frame is in a closed state, the length of the portion of the transmission assembly accommodated in the main body is greater than the length accommodated in the cavity; when the second support frame is in an expanded state, the length of the portion of the transmission assembly accommodated in the main body is less than the length accommodated in the cavity.

11. The suspension device according to claim 5, It is characterized in that The main body is provided with a slide groove extending along the axial direction of the main body, the second operating member is partially arranged in the slide groove and is slidably connected to the main body through the slide groove, the length of the slide groove is equal to the difference between the second length and the first length, the number of the second operating members, the slide grooves and the second supporting frames is equal and corresponding, and each of the second operating members passes through one of the slide grooves and is drivingly connected to a corresponding second supporting frame.

12. The suspension device according to claim 10, It is characterized in that The support assembly includes a first connecting member, the first connecting member forms a wedge-shaped portion corresponding to each of the transmission assemblies, and the transmission assembly forms a groove corresponding to the wedge-shaped portion; when the support assembly is in a closed state, the wedge-shaped portion is embedded in the groove; or, The first operating member is connected to the first connecting member or the second connecting member through a transmission rod, the main body further comprises a sleeve surrounding the transmission rod, a smoke exhaust channel is formed between the transmission rod and the sleeve, a smoke exhaust hole is provided at the proximal end of the sleeve, and the smoke exhaust hole connects the smoke exhaust channel with the outside; or, A plurality of through holes are provided in the main body, and the through holes extend along the axial direction of the main body; the transmission assembly also includes a pressure rod, and the pressure rod is slidably inserted into the through holes, and the number of the through holes corresponds to the number of the pressure rods and the support units. The proximal end of the pressure rod is fixedly connected to the second operating member, and the distal end is rotatably connected to the transmission assembly.

13. The suspension device according to claim 5, It is characterized in that The first support frame includes a first support arm and a second support arm which are rotatably connected to each other, the proximal end of the first support arm is rotatably connected to the main body, and the distal end of the second support arm is transmission-connected to the first operating member; the second support frame includes a third support arm, the proximal end of the third support arm is transmission-connected to the second operating member, and the distal end is slidably connected to the first support arm; When the first operating member is subjected to force, the second supporting arm and the first supporting arm of each supporting unit are driven to rotate relative to each other so as to switch the first supporting frame to a folded state or an unfolded state. When the first supporting frame is in the unfolded state, each of the second operating members can independently drive the third supporting arm and the first supporting arm of one of the supporting units to slide relative to each other, so as to extend the supporting length of the second supporting frame; The support assembly further includes a first connecting member and a second connecting member, wherein the first connecting member and the second connecting member can move relative to each other in the axial direction of the main body, the first supporting arms of the plurality of supporting units are arranged around the first connecting member and are respectively hinged to the first connecting member, and the second supporting arms of the plurality of supporting units are arranged around the second connecting member and are respectively hinged to the second connecting member; The second connecting member is arranged at the distal end relative to the first connecting member, the length of the first support arm is greater than the length of the second support arm, the proximal end of the first support arm is hinged to the first connecting member, the distal end of the second support arm is hinged to the second connecting member, and the proximal end of the second support arm is hinged between the middle and distal ends of the first support arm.

14. The suspension device according to any one of claims 1 to 13, It is characterized in that The plurality of support units are distributed at intervals in the circumferential direction of the main body, and any two adjacent support units form an interval in the circumferential direction, wherein a width of one of the intervals is at least different from a width of another of the intervals.

15. A surgical device, It is characterized in that The invention comprises the suspension device according to any one of claims 1 to 14 and a suspension arm connected to the suspension device.

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