Pneumoperitoneum-free minimally invasive surgery channel device

Abstract

In the embodiment of the invention, the pneumoperitoneum-free minimally invasive surgery channel device is provided, and the pneumoperitoneum-free minimally invasive surgery channel device at least comprises an inner cylinder, an outer cylinder partially arranged on the inner cylinder in a sleeving mode, a plurality of supporting pieces movably connected to the inner cylinder and a plurality of connecting pieces connected to the outer cylinder; one connecting piece is connected with one supporting piece to drive the supporting piece to move, so that the pneumoperitoneum-free minimally invasive surgery channel device is switched between a distraction state and a puncture state; in the puncturing state, the supporting piece is stored to the position where the supporting piece is attached to the inner cylinder, so that the inner cylinder can puncture into the pleuroperitoneal cavity conveniently; in the expanding state, the supporting piece is expanded in the radial direction of the inner cylinder so as to be expanded in the pleuroperitoneal cavity to form an operation space. According to the pneumoperitoneum-free minimally invasive surgery channel device, the supporting piece is driven by the connecting piece to be unfolded so as to establish a surgery space in the pleuroperitoneal cavity, and the problem that in an existing pleuroperitoneal cavity surgery, it is difficult to establish a pneumoperitoneum to conduct the surgery under the emergency condition is solved.

Description

Technical Field

[0001] This application belongs to the technical field of medical devices, and particularly relates to a pneumoperitoneum-free minimally invasive surgical access device. Background Art

[0002] Laparoscopic surgery is a newly emerging surgical method in modern medicine. By making smaller incisions on the patient's body, surgical instruments and imaging devices are inserted through the incisions, and corresponding examinations or surgical operations are completed inside the incisions under television monitoring. Since laparoscopic surgery leaves small wounds on patients and has a relatively fast postoperative recovery, it has become the mainstream trend in the development of future surgical methods. When performing laparoscopic surgery, it is necessary to continuously input gas into the thoracic and abdominal cavities of the patient to establish a pneumoperitoneum, and the endoscopic observation and surgical instrument operation space in the thoracic and abdominal cavities are obtained through the pneumoperitoneum.

[0003] In the prior art, the establishment of a pneumoperitoneum requires continuous input of carbon dioxide gas into the thoracic and abdominal cavities. However, in some emergency scenarios, such as on the battlefield, during disaster relief, and in remote mountainous areas where it is difficult to obtain a continuous and stable gas source, it is difficult to establish a pneumoperitoneum for emergency laparoscopic surgery, thus missing the best treatment opportunity. Summary of the Invention

[0004] This application aims to provide a pneumoperitoneum-free minimally invasive surgical access device to solve the problem that in the existing laparoscopic surgery, it is necessary to continuously input carbon dioxide gas into the thoracic and abdominal cavities, but in some emergency scenarios, such as on the battlefield, during disaster relief, and in remote mountainous areas where it is difficult to obtain a continuous and stable gas source, it is difficult to establish a pneumoperitoneum for emergency laparoscopic surgery, thus missing the best treatment opportunity.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] This application discloses a pneumoperitoneum-free minimally invasive surgical access device, which includes: an inner cylinder, an outer cylinder, a plurality of support members, and a plurality of connecting members; at least a part of the outer cylinder is sleeved on the inner cylinder; the plurality of support members are movably connected to the inner cylinder, and the plurality of connecting members are connected to the outer cylinder; one connecting member is connected to one support member, and the connecting member is used to drive the support member to move so that the pneumoperitoneum-free minimally invasive surgical access device can be switched between an expanded state and a puncture state; wherein, in the puncture state, the support member is received to a position where it fits with the inner cylinder to facilitate the inner cylinder to puncture into the thoracic and abdominal cavities; in the expanded state, the support member expands radially towards the inner cylinder to form a surgical space by expanding in the thoracic and abdominal cavities.

[0007] Optionally, the plurality of support members are circumferentially spaced and connected to the inner cylinder.

[0008] Optionally, the inner cylinder and the outer cylinder can move relative to each other; when the outer cylinder moves relative to the inner cylinder away from the support member, the connecting member drives the support member to expand radially towards the inner cylinder, so that the pneumoperitoneum-free minimally invasive surgical access device enters the expanded state; when the outer cylinder moves relative to the inner cylinder towards the support member, the connecting member drives the support member to be received towards the inner cylinder to a position where it fits against the inner cylinder, so that the pneumoperitoneum-free minimally invasive surgical access device enters the puncture state.

[0009] Optionally, the support member includes a support wall plate and a first support rod; one end of the first support rod is movably connected to the inner cylinder, and the other end of the first support rod is movably connected to the support wall plate; one end of the connecting member is movably connected to the outer cylinder, and the other end is movably connected to the first support rod; when the outer cylinder moves relative to the inner cylinder away from the support member, the connecting member drives the first support rod to move, so that the support wall plate moves away from the inner cylinder to expand the chest and abdominal cavity to form a surgical space, and the pneumoperitoneum-free minimally invasive surgical access device enters the expanded state; when the outer cylinder moves relative to the inner cylinder towards the support member, the connecting member drives the first support rod to move, so that the support wall plate moves towards the inner cylinder to fit against the inner cylinder, so that the pneumoperitoneum-free minimally invasive surgical access device enters the puncture state.

[0010] Optionally, the support assembly further includes a second support rod, one end of the second support rod is movably connected to the inner cylinder, and the other end is movably connected to the support wall plate; the second support rod is arranged on a side of the first support rod away from the outer cylinder; the second support rod is used to maintain the stability of the support wall plate when the pneumoperitoneum-free minimally invasive surgical access device switches between the expanded state and the puncture state.

[0011] Optionally, a guide groove is provided on the outer cylinder; a push-pull handle is provided on the inner cylinder; the push-pull handle extends out of the outer cylinder through the guide groove; the push-pull handle is used to move along the guide groove to drive the inner cylinder and the outer cylinder to move relative to each other, so that the pneumoperitoneum-free minimally invasive surgical access device switches between the expanded state and the puncture state.

[0012] Optionally, the pneumoperitoneum-free minimally invasive surgical access device further includes an elastic sleeve; the elastic sleeve is fixedly connected to the support member; when the pneumoperitoneum-free minimally invasive surgical access device is in the puncture state, the elastic sleeve is folded and received together with the support member to facilitate the puncture of the inner cylinder into the chest and abdominal cavity; when the pneumoperitoneum-free minimally invasive surgical access device is in the expanded state, the elastic sleeve unfolds together with the support member to isolate the surgical space.

[0013] Optionally, the outer cylinder includes a locking portion; the locking portion includes a threaded through hole, a locking bolt, a relief groove, and a pressing block. Among them, the threaded through hole penetrates the outer cylinder along the radial direction of the outer cylinder, and the locking bolt is inserted into the threaded through hole; the relief groove is provided between the threaded through hole and the inner cylinder; the pressing block is disposed in the relief groove; when the pneumoperitoneum-free minimally invasive surgical access device is in the puncture state or the expansion state, the locking bolt is screwed into the threaded through hole to lock the inner cylinder and the outer cylinder through the pressing block; when the pneumoperitoneum-free minimally invasive surgical access device switches between the puncture state and the expansion state, the locking bolt is screwed out of the threaded through hole so that the inner cylinder and the outer cylinder can move relative to each other.

[0014] Optionally, sealing rings are respectively provided at both ends of the locking portion along the axial direction of the inner cylinder, and the sealing rings are used to ensure the sealing of the pneumoperitoneum-free minimally invasive surgical access device when the state of the pneumoperitoneum-free minimally invasive surgical access device is switched.

[0015] Optionally, a support handle is further provided on the outer cylinder, and the support handle is provided at one end of the outer cylinder away from the support member; the support handle is used to be held when the pneumoperitoneum-free minimally invasive surgical access device switches states to improve stability.

[0016] In an embodiment of the present application, a pneumoperitoneum-free minimally invasive surgical access device is provided. The pneumoperitoneum-free minimally invasive surgical access device may at least include: an inner cylinder, an outer cylinder partially sleeved on the inner cylinder, a plurality of support members movably connected to the inner cylinder, and a plurality of connecting members connected to the outer cylinder; one connecting member is connected to one support member to drive the support member to move, so that the pneumoperitoneum-free minimally invasive surgical access device switches between an expansion state and a puncture state; wherein, in the puncture state, the support members are received in a position where they are in contact with the inner cylinder, so as to facilitate the inner cylinder to puncture into the thoracic and abdominal cavities; in the expansion state, the support members expand radially towards the inner cylinder to form a surgical space in the thoracic and abdominal cavities. The pneumoperitoneum-free minimally invasive surgical access device provided by the present application solves the problem that it is difficult to establish a pneumoperitoneum for surgery under emergency conditions in existing thoracic and abdominal cavity surgeries by providing support members on the access device, establishing a surgical space in the thoracic and abdominal cavities through the movement of the inner cylinder and the outer cylinder, and at the same time enabling surgical instruments to enter the thoracic and abdominal cavities through the outer cylinder and the inner cylinder for surgery.

[0017] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 It is a schematic diagram of the pneumoperitoneum-free minimally invasive surgical access device described in this application in a puncture state;

[0020] Figure 2 It is a cross-sectional view of the pneumoperitoneum-free minimally invasive surgical access device described in this application in a puncture state;

[0021] Figure 3 It is a schematic diagram of the pneumoperitoneum-free minimally invasive surgical access device described in this application in an expanded state;

[0022] Figure 4 It is a cross-sectional view of the pneumoperitoneum-free minimally invasive surgical access device described in this application in an expanded state;

[0023] Figure 5 It is a schematic diagram of the pneumoperitoneum-free minimally invasive surgical access device described in this application with an elastic sleeve;

[0024] Figure 6 It is a schematic diagram of the locking part described in this application;

[0025] Figure 7 It is an overall schematic diagram of the pneumoperitoneum-free minimally invasive surgical access device described in this application;

[0026] Figure 8 It is a cross-sectional schematic diagram of the locking part described in this application;

[0027] Figure 9 It is a schematic diagram of the pneumoperitoneum-free minimally invasive surgical access device from the direction of the support member.

[0028] Reference numerals: 1, inner cylinder; 11, push-pull handle; 2, outer cylinder; 21, guide groove; 22, locking part; 221, threaded through hole; 222, locking bolt; 223, relief groove; 224, pressing block; 3, support member; 31, support wall plate; 32, first support rod; 33, second support rod; 4, connecting member; 5, surgical space; 6, gas path interface; 7, elastic sleeve; 8, sealing ring; 9, support handle. Detailed Description of the Invention

[0029] Hereinafter, embodiments of the present invention will be described in detail. Examples of the embodiments are shown in the 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 by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of this application.

[0030] The features of the terms "first" and "second" in the description and claims of this application may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by 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. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0032] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The embodiments of this application provide a pneumoperitoneum-free minimally invasive surgical access device, and the specific type of the access device may not be limited in the embodiments of this application.

[0034] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , which show a pneumoperitoneum-free minimally invasive surgical access device described in this application. The pneumoperitoneum-free minimally invasive surgical access device may at least include: an inner cylinder 1, an outer cylinder 2, a plurality of support members 3, and a plurality of connecting members 4; at least a part of the outer cylinder 2 is sleeved on the inner cylinder 1; the plurality of support members 3 are movably connected to the inner cylinder 1, and the plurality of connecting members 4 are connected to the outer cylinder 1; one connecting member 4 is connected to one support member 3, and the connecting member 4 is used to drive the support member 3 to move so that the pneumoperitoneum-free minimally invasive surgical access device provided in this application can be switched between an expanded state and a puncture state; wherein, in the puncture state, the support member 3 is received to a position where it fits against the inner cylinder 1 to facilitate the inner cylinder 1 to puncture into the thoracic and abdominal cavities; in the expanded state, the support member 3 expands radially towards the inner cylinder 1 to form a surgical space 5 in the thoracic and abdominal cavities.

[0035] In an embodiment of the present application, a pneumoperitoneum-free minimally invasive surgical access device is provided. The pneumoperitoneum-free minimally invasive surgical access device may at least include: an inner cylinder 1, an outer cylinder 2 partially sleeved on the inner cylinder 1, a plurality of support members 3 movably connected to the inner cylinder 1, and a plurality of connecting members 4 connected to the outer cylinder 2; one connecting member 4 is connected to one support member 3 to drive the support member 3 to move, so that the pneumoperitoneum-free minimally invasive surgical access device can be switched between an expanded state and a puncture state; specifically, in the puncture state, the support member 3 is retracted to a position where it fits against the inner cylinder 1, so as to facilitate the inner cylinder 1 to puncture into the thoracic and abdominal cavities; in the expanded state, the support member 3 expands radially towards the inner cylinder 1 to form a surgical space 5 in the thoracic and abdominal cavities. The pneumoperitoneum-free minimally invasive surgical access device provided by the present application, by providing the inner cylinder 1, the outer cylinder 2, and the support member 3 on the access device, enables the support member 3 to expand in the thoracic and abdominal cavities through the connecting member 4 on the outer cylinder to establish a surgical space, and at the same time enables surgical instruments to enter the surgical space established in the thoracic and abdominal cavities through the outer cylinder 2 and the inner cylinder 1 for laparoscopic surgery, solving the problem that it is difficult to establish pneumoperitoneum for surgery under emergency conditions in existing thoracic and abdominal surgeries. At the same time, through the inner cylinder 1 and the outer cylinder 2, the surgical instruments enter the surgical space 5 of the thoracic and abdominal surgery, without the need for a second opening in the thoracic and abdominal cavities, and the trauma to the patient is relatively reduced.

[0036] In specific applications, when using the pneumoperitoneum-free minimally invasive surgical access device of the present application, first, through the connecting member 4 on the inner cylinder 1 and the outer cylinder 2, the support member 3 is folded and retracted to fit tightly against the inner cylinder 1. One end of the inner cylinder 1 with the support member 3 is inserted into the thoracic and abdominal cavities of the patient. The support member 3 is unfolded through the connecting member 4 to support the inner wall of the thoracic and abdominal cavities of the patient to establish a surgical space 5. The surgical instruments are inserted into the thoracic and abdominal cavities through the outer cylinder 2 and the inner cylinder 1, and laparoscopic surgery is performed in the surgical space 5 supported by the support member 3. Specifically, the surgical instruments generally may include an endoscope and an instrument forceps, etc. The inner cylinder 1 and the outer cylinder 2 also include channels with an airtight design to pass the surgical instruments.

[0037] Furthermore, an air path interface 6 may also be provided on the outer cylinder 2 for accessing gas to establish pneumoperitoneum in the thoracic and abdominal cavities, so that the pneumoperitoneum-free minimally invasive surgical access device provided by the present application can be used for both pneumoperitoneum and pneumoperitoneum-free. When the conditions meet the establishment of pneumoperitoneum, the surgical space 5 is jointly established by inputting gas and the support member 3; when the conditions do not meet the establishment of pneumoperitoneum, the surgical space 5 is established only by the support member 3 for laparoscopic surgery. Specifically, the air path interface 6 can be selected as a Luer interface. It should be noted that those skilled in the art can select the specific type of the air path interface 6 according to actual needs, and no specific limitation is made in the present application.

[0038] Optionally, the plurality of support members 3 in the present application are connected to the inner cylinder 1 at intervals along the circumferential direction of the inner cylinder 1.

[0039] In the embodiment of the present application, a plurality of support members 3 are connected to the inner cylinder 1 at intervals in the circumferential direction, so that when the connecting member 4 drives the support members 3 to expand or fold, the entire pneumoperitoneum-free minimally invasive surgical access device is more stable, avoiding unevenness of the surgical space 5 caused by different degrees of expansion or folding of the support members 3, which may affect the implementation of laparoscopic surgery.

[0040] Optionally, the inner cylinder 1 and the outer cylinder 2 in the present application can move relative to each other; when the outer cylinder 2 moves relative to the inner cylinder 1 in a direction away from the support members 3, the connecting member 4 drives the support members 3 to expand radially towards the inner cylinder 1, so that the pneumoperitoneum-free minimally invasive surgical access device enters the expanded state; when the outer cylinder 2 moves relative to the inner cylinder 1 in the direction towards the support members 3, the connecting member 4 drives the support members 3 to be received towards the inner cylinder 1 to a position where they are in contact with the inner cylinder 1, so that the pneumoperitoneum-free minimally invasive surgical access device enters the puncture state.

[0041] In the embodiment of the present application, the inner cylinder 1 and the outer cylinder 2 can move relative to each other, so that during application, the relative movement of the inner cylinder 1 and the outer cylinder 2 causes the connecting member 4 to drive the support members 3 to be folded or expanded, so that the folding or expansion of the support members 3 can be completed without setting other driving components, and thus the pneumoperitoneum-free minimally invasive surgical access device can be switched between the expanded state and the puncture state.

[0042] Optionally, the support member 3 in the present application includes a support wall plate 31 and a first support rod 32; one end of the first support rod 32 is movably connected to the inner cylinder 1, and the other end of the first support rod 32 is movably connected to the support wall plate 31; one end of the connecting member 4 is movably connected to the outer cylinder 2, and the other end is movably connected to the first support rod 32; when the outer cylinder 2 moves relative to the inner cylinder 1 in a direction away from the support members 3, the connecting member 4 drives the first support rod 32 to move, so that the support wall plate 31 moves away from the inner cylinder 1 to expand the chest and abdominal cavities to form a surgical space 5, and the pneumoperitoneum-free minimally invasive surgical access device enters the expanded state; when the outer cylinder 2 moves relative to the inner cylinder 1 in the direction towards the support member 4, the connecting member 4 drives the first support rod 32 to move, so that the support wall plate 31 moves towards the inner cylinder 1 to a position where it is in contact with the inner cylinder 1, so that the pneumoperitoneum-free minimally invasive surgical access device enters the puncture state.

[0043] In the embodiment of the present application, the support member 3 at least includes a support wall plate 31 and a first support rod 32. The support wall plate 31 is used to closely adhere to the inner cylinder 1 when the pneumoperitoneum-free minimally invasive surgical access device enters the puncture state, so as to complete the puncture of the patient's chest and abdominal cavities together with the inner cylinder 1. After the pneumoperitoneum-free minimally invasive surgical access device completes the puncture operation on the patient's chest and abdominal cavities, under the drive of the connecting member 4, it is driven by the first support rod 32 to move in the radial direction towards the inner cylinder 1 and abut against the inner wall of the patient's chest and abdominal cavities, and expand the patient's chest and abdominal cavities to form a surgical space 5.

[0044] Optionally, the support member 3 described in the present application further includes a second support rod 33. One end of the second support rod 33 is movably connected to the inner cylinder 1, and the other end is movably connected to the support wall plate 31. The second support rod 33 is disposed on a side of the first support rod 32 away from the outer cylinder 2. The second support rod 33 is used to maintain the stability of the support wall plate 31 when the pneumoperitoneum-free minimally invasive surgical access device switches between the expanded state and the puncture state.

[0045] In the embodiment of the present application, by disposing the second support rod 33 on a side of the first support rod 32 away from the outer cylinder 2, and through the movable connections of the second support rod 33 and the first support rod 32 with the support wall plate 31, the stability of the support wall plate 31 is maintained during the process of the pneumoperitoneum-free minimally invasive surgical access device switching between the expanded state and the puncture state, thereby avoiding damage to the inner walls of the patient's chest and abdomen.

[0046] Optionally, a guiding groove 21 is provided on the outer cylinder 2 described in the present application; a push-pull handle 11 is provided on the inner cylinder 1; the push-pull handle 11 extends out of the outer cylinder 2 through the guiding groove 21; the push-pull handle 11 is used to move along the guiding groove 21 to drive the relative movement of the inner cylinder 1 and the outer cylinder 2, so that the pneumoperitoneum-free minimally invasive surgical access device switches between the expanded state and the puncture state.

[0047] In the embodiment of the present application, the relative movement of the inner cylinder 1 and the outer cylinder 2 is driven by the push-pull handle 11, so that the pneumoperitoneum-free minimally invasive surgical access device switches between the expanded state and the puncture state. Specifically, after the pneumoperitoneum-free minimally invasive surgical access device punctures the patient's chest and abdomen in the puncture state, the user pushes the push-pull handle 11 to move the outer cylinder 2 relative to the inner cylinder 1 in a direction away from the support member 3, and the connecting member 4 drives the support member 3 to expand radially toward the inner cylinder 1 to expand the chest and abdomen to form a surgical space 5; when the laparoscopic surgery is completed, the user pulls the push-pull handle 11 to move the outer cylinder 2 relative to the inner cylinder 1 in a direction close to the support member 3, and the connecting member 4 drives the support member 3 to be folded and received toward the inner cylinder 1 until the support member 3 is close to the inner cylinder, which is convenient for pulling out the pneumoperitoneum-free minimally invasive surgical access device from the patient's chest and abdomen.

[0048] Optionally, the pneumoperitoneum-free minimally invasive surgical access device described in the present application further includes an elastic sleeve 7; the elastic sleeve 7 is fixedly connected to the support member 3; when the pneumoperitoneum-free minimally invasive surgical access device is in the puncture state, the elastic sleeve 7 is folded and received together with the support member 3 to facilitate the puncture of the inner cylinder 1 into the chest and abdomen; when the pneumoperitoneum-free minimally invasive surgical access device is in the expanded state, the elastic sleeve 7 is unfolded together with the support member 3 to isolate the surgical space 5.

[0049] In the embodiment of the present application, an elastic sleeve 7 that unfolds or folds with the support member 3 is provided on the pneumoperitoneum-free minimally invasive surgical access device. When the pneumoperitoneum-free minimally invasive surgical access device is in the expanded state, the elastic sleeve 7 unfolds like a canopy with the support member 3, separating the surgical space 5 from other visceral tissues in the patient's chest and abdomen to avoid damage during the operation. When the pneumoperitoneum-free minimally invasive surgical access device is in the puncture state, the elastic sleeve 7 folds and retracts with the support member 3 to facilitate puncturing the patient's chest and abdomen. For example, the elastic sleeve 7 can be selected to be detachably connected to the support wall plate 31 for easy cleaning and replacement. Specifically, the elastic sleeve 7 can be made of materials such as high-elastic polyurethane or rubber to ensure the deformation adaptability of the elastic sleeve 7. It should be noted that those skilled in the art can select the material and connection method of the elastic sleeve 7 according to actual needs, and no specific limitation is made in this application.

[0050] Optionally, the outer cylinder 2 described in the present application further includes a locking portion 22. Specifically, the locking portion 22 includes a threaded through hole 221, a locking bolt 222, a relief groove 223, and a pressing block 224. Among them, the threaded through hole 221 penetrates the outer cylinder 2 along the radial direction of the outer cylinder 2, and the locking bolt 222 is inserted into the threaded through hole 221. The relief groove 223 is provided between the threaded through hole 221 and the inner cylinder 1. The pressing block 224 is disposed in the relief groove 223. In application, when the pneumoperitoneum-free minimally invasive surgical access device is in the puncture state or the expanded state, the user screws the locking bolt 222 into the threaded through hole 221 to lock the inner cylinder 1 and the outer cylinder 2 through the retrieval bolt 222 and the pressing block 224 to prevent relative movement between the two. When the pneumoperitoneum-free minimally invasive surgical access device switches between the puncture state and the expanded state, the user screws the locking bolt 222 out of the threaded through hole 221 to release the pressing block from the inner cylinder 1 and the outer cylinder 2 to facilitate the relative movement between the inner cylinder 1 and the outer cylinder 2.

[0051] In the embodiment of the present application, when the pneumoperitoneum-free minimally invasive surgical access device is in the expanded state, it is necessary to maintain the stability of the surgical space during the entire operation. At this time, the user screws the locking bolt 222 into the threaded through hole 221 to press the pressing block 224 through the locking bolt 222, thereby locking the inner cylinder 1 and the outer cylinder 2 to prevent relative movement between the two, and then making the surgical space relatively stable; when the pneumoperitoneum-free minimally invasive surgical access device is in the puncture state, it is necessary to puncture or withdraw the pneumoperitoneum-free minimally invasive surgical access device into or from the patient's chest and abdomen. At this time, relative fixation between the inner cylinder 1 and the outer cylinder 2 is also required to prevent the support member 3 from loosening and causing damage to the patient's chest and abdomen. The user screws the locking bolt 222 into the threaded through hole 221 to press the pressing block 224 through the locking bolt 222, thereby locking the inner cylinder 1 and the outer cylinder 2 to prevent relative movement between the two, and then preventing the support member 3 from loosening; and when the pneumoperitoneum-free minimally invasive surgical access device needs to switch between the two states, relative movement between the inner cylinder 1 and the outer cylinder 2 is required at this time. The user screws the locking bolt 222 out of the threaded through hole 221 to release the locking of the inner cylinder 1 and the outer cylinder 2 by the pressing block 224, so that relative movement between the inner cylinder 1 and the outer cylinder 2 can be achieved.

[0052] Specifically, the threaded through hole 221 and the locking bolt 222 are provided with mutually engaged threads, and the locking bolt 222 is also provided with a rotating cap with a concave-convex structure to facilitate the screwing in and out operations of the locking bolt 222.

[0053] The pneumoperitoneum-free minimally invasive surgical access device provided by the present application has a channel locking part, which enables the pneumoperitoneum-free minimally invasive surgical access device to fix the position state of the support member 3 during use, and through the arrangement of the pressing block 224 and the locking bolt 222, stepless adjustment can be performed when the inner cylinder 1 and the outer cylinder 2 move relatively, so that the deployment position of the support member 3 can be adjusted more, realizing more diverse surgical space selection.

[0054] Optionally, sealing rings 8 are respectively provided at both ends of the locking part 22 along the axial direction of the inner cylinder 1. The sealing rings 8 are used to ensure the sealing of the pneumoperitoneum-free minimally invasive surgical access device when the state of the pneumoperitoneum-free minimally invasive surgical access device is switched.

[0055] In the embodiment of the present application, by providing sealing rings at both ends of the locking part 22, the relative sealing between the inner cylinder 1 and the outer cylinder 2 is ensured. At the same time, when the inner cylinder 1 and the outer cylinder 2 move relatively, the sealing ring 8 also has a certain damping effect to prevent sudden deployment or folding of the support member 3 due to misoperation during the relative movement of the inner cylinder 1 and the outer cylinder 2, causing damage to the patient's chest and abdomen.

[0056] It should be noted that those skilled in the art can specifically select the material and size of the sealing ring 8 according to actual needs, and no specific limitation is made in the present application.

[0057] Optionally, a support handle 9 is further provided on the outer cylinder 2 described in the present application. The support handle 9 is provided at one end of the outer cylinder 2 away from the support member 3. The support handle 9 is used to be held by a user when the state of the pneumoperitoneum-free minimally invasive surgical access device is switched, so as to improve stability.

[0058] In the embodiment of the present application, the support handle 9 is provided at one end of the outer cylinder 2 away from the support member 3, so as to be held by a user during the use of the pneumoperitoneum-free minimally invasive surgical access device to switch between two states, and improve the use stability of the pneumoperitoneum-free minimally invasive surgical access device.

[0059] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pneumoperitoneum-free minimally invasive surgical access device, characterized in that, the pneumoperitoneum-free minimally invasive surgical access device includes: an inner cylinder, an outer cylinder, a plurality of support members and a plurality of connecting members; at least a part of the outer cylinder is sleeved on the inner cylinder; a plurality of the support members are movably connected to the inner cylinder, and a plurality of the connecting members are connected to the outer cylinder; one of the connecting members is connected to one of the support members, and the connecting member is used to drive the support member to move so that the pneumoperitoneum-free minimally invasive surgical access device switches between an expanded state and a puncture state; wherein, in the puncture state, the support member is received to a position where it fits against the inner cylinder to facilitate the inner cylinder to puncture into the chest and abdominal cavities; in the expanded state, the support member expands radially towards the inner cylinder to form a surgical space by expanding in the chest and abdominal cavities.

2. The pneumoperitoneum-free minimally invasive surgical access device according to claim 1, characterized in that, a plurality of the support members are connected to the inner cylinder at intervals along the circumferential direction of the inner cylinder.

3. The pneumoperitoneum-free minimally invasive surgical access device according to claim 1, characterized in that, the inner cylinder and the outer cylinder are relatively movable; when the outer cylinder moves relative to the inner cylinder in a direction away from the support member, the connecting member drives the support member to expand radially towards the inner cylinder so that the pneumoperitoneum-free minimally invasive surgical access device enters the expanded state; when the outer cylinder moves relative to the inner cylinder in a direction towards the support member, the connecting member drives the support member to be received towards the inner cylinder to a position where it fits against the inner cylinder so that the pneumoperitoneum-free minimally invasive surgical access device enters the puncture state.

4. The pneumoperitoneum-free minimally invasive surgical access device according to claim 3, characterized in that, the support member includes a support wall plate and a first support rod; one end of the first support rod is movably connected to the inner cylinder, and the other end of the first support rod is movably connected to the support wall plate; one end of the connecting member is movably connected to the outer cylinder, and the other end is movably connected to the first support rod; when the outer cylinder moves relative to the inner cylinder in a direction away from the support member, the connecting member drives the first support rod to move so that the support wall plate moves away from the inner cylinder to expand the chest and abdominal cavities to form a surgical space, and the pneumoperitoneum-free minimally invasive surgical access device enters the expanded state; when the outer cylinder moves relative to the inner cylinder in a direction towards the support member, the connecting member drives the first support rod to move so that the support wall plate moves towards the inner cylinder to a position where it fits against the inner cylinder so that the pneumoperitoneum-free minimally invasive surgical access device enters the puncture state.

5. The pneumoperitoneum-free minimally invasive surgical access device according to claim 4, characterized in that, the support member further includes a second support rod, one end of the second support rod is movably connected to the inner cylinder, and the other end is movably connected to the support wall plate; the second support rod is arranged on a side of the first support rod away from the outer cylinder; the second support rod is used to maintain the stability of the support wall plate when the pneumoperitoneum-free minimally invasive surgical access device switches between the expanded state and the puncture state.

6. The pneumoperitoneum-free minimally invasive surgical access device according to claim 3, characterized in that, A guide groove is provided on the outer cylinder; a push-pull handle is provided on the inner cylinder; the push-pull handle extends out of the outer cylinder through the guide groove; The push-pull handle is used to move along the guide groove to drive the relative movement between the inner cylinder and the outer cylinder, so that the pneumoperitoneum-free minimally invasive surgical access device can be switched between the expanded state and the puncture state.

7. The pneumoperitoneum-free minimally invasive surgical access device according to claim 1, characterized in that, The pneumoperitoneum-free minimally invasive surgical access device further includes an elastic sleeve; the elastic sleeve is fixedly connected to the support member; When the pneumoperitoneum-free minimally invasive surgical access device is in the puncture state, the elastic sleeve is folded and stored together with the support member to facilitate the puncture of the inner cylinder into the thoracic and abdominal cavities; When the pneumoperitoneum-free minimally invasive surgical access device is in the expanded state, the elastic sleeve is unfolded together with the support member to isolate the surgical space.

8. The pneumoperitoneum-free minimally invasive surgical access device according to claim 1, characterized in that, The outer cylinder includes a locking portion; The locking portion includes a threaded through hole, a locking bolt, a relief groove and a pressing block, wherein, The threaded through hole penetrates the outer cylinder along the radial direction of the outer cylinder, and the locking bolt is inserted into the threaded through hole; the relief groove is arranged between the threaded through hole and the inner cylinder; the pressing block is arranged in the relief groove; When the pneumoperitoneum-free minimally invasive surgical access device is in the puncture state or the expanded state, the locking bolt is screwed into the threaded through hole to lock the inner cylinder and the outer cylinder through the pressing block; When the pneumoperitoneum-free minimally invasive surgical access device is switched between the puncture state and the expanded state, the locking bolt is screwed out of the threaded through hole to enable relative movement between the inner cylinder and the outer cylinder.

9. The pneumoperitoneum-free minimally invasive surgical access device according to claim 8, characterized in that, Sealing rings are respectively arranged at both ends of the locking portion along the axial direction of the inner cylinder, and the sealing rings are used to ensure the sealing of the pneumoperitoneum-free minimally invasive surgical access device when the state is switched.

10. The pneumoperitoneum-free minimally invasive surgical access device according to claim 1, characterized in that, A support handle is further provided on the outer cylinder, and the support handle is arranged at one end of the outer cylinder away from the support member; The support handle is used to be held when the pneumoperitoneum-free minimally invasive surgical access device is switched between states to improve stability.

Images