Drag hook assembly facilitating abdominal tissue suturing

Abstract

The invention relates to the technical field of medical instruments, in particular to a drag hook assembly facilitating abdominal tissue suturing, which comprises a drag hook, the drag hook comprises a drag hook head, a plurality of groups of shielding assemblies are arranged on the drag hook head, each shielding assembly comprises two shielding pieces, and each shielding piece comprises a rotating column and a baffle; the retractor head is further provided with a first cavity, a first piston is arranged in the first cavity, the first piston is connected with a first rod body, and the first cavity is communicated with a first inflation tube; the shielding assembly has a first state and a second state, when the shielding assembly is in the first state, the area between the two rotating columns is not shielded by the baffle, and the retractor head is of a toothed plate-shaped structure; when the shielding assembly is in the second state, the two baffles rotate to the area between the two rotating columns, and the drag hook head is of a toothless plate-shaped structure. According to the drag hook assembly facilitating abdominal tissue suturing, the purpose of improving the convenience of abdominal tissue suturing while the convenience of opening the abdominal tissue is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a retractor assembly facilitating abdominal tissue suture. Background Art

[0002] An abdominal retractor is a special instrument used in surgical operations to retract the abdominal wall, organs or tissues to expose the surgical field of view. Its core function is to provide a clear operating space for medical staff through mechanical traction, and it is an indispensable tool in open abdominal surgeries and some minimally invasive surgeries.

[0003] Generally, the retractor head of an abdominal retractor is in the shape of a wide and flat blade for retracting abdominal tissues. Although its wide and flat retractor head can improve the effect of opening abdominal tissues, when subsequently suturing abdominal tissues such as the abdominal wall, since the retractor head will block the abdominal tissues to be sutured, it will affect the suture of abdominal tissues and is not convenient for medical staff to suture abdominal tissues during the process of retracting abdominal tissues by the retractor head; and if the retractor head is removed, although the problem of the retractor head blocking abdominal tissues can be eliminated, without the opening effect of the retractor head on abdominal tissues, it will reduce the surgical operating space of medical staff, making their operating space limited and thus increasing the suture difficulty.

[0004] Therefore, how to improve the convenience of abdominal tissue suture during the process of using an abdominal retractor to open abdominal tissues is a technical problem that urgently needs to be solved at present. Summary of the Invention

[0005] The purpose of the present invention is to: aiming at the problem that the current abdominal retractor will increase the inconvenience of abdominal tissue suture during the process of opening abdominal tissues, provide a retractor assembly facilitating abdominal tissue suture to improve the convenience of abdominal tissue suture.

[0006] In order to achieve the above-mentioned invention purpose, the present invention provides the following technical solutions: A retractor assembly facilitating abdominal tissue suture, including a retractor. The retractor includes a retractor head, and a plurality of groups of shielding assemblies are arranged on the retractor head. A single shielding assembly includes two shielding members arranged oppositely. The shielding member includes a rotating column and a baffle plate, and the rotating column is rotatably connected to the retractor head; A first chamber is further arranged on the retractor head. A first piston is arranged in the first chamber. The first piston is connected with a first rod body. The first rod body is in screw fit with the rotating column. The first chamber communicates with a first inflatable tube. The first inflatable tube is used for inflating and deflating the first chamber to drive the first piston to move relative to the retractor head, so that the first rod body moves relative to the rotating column to drive the rotating column to rotate self; The shielding component has a first state and a second state. When the shielding component is in the first state, the area between the two rotating columns is not blocked by the baffle, making the hook head in the form of a toothed plate structure; When the shielding component is in the second state, the two baffles rotate with the rotating columns to the area between the two rotating columns, making the hook head in the form of a toothless plate structure; When the hook head expands the tissue and during the rotation of the rotating column to change the hook head from a toothless plate structure to a toothed plate structure, the rotating column squeezes the expanded tissue, causing the tissue to converge towards the area between the two rotating columns on the same shielding component.

[0007] As a preferred technical solution of the present application, a first spring is further provided on the hook head. The first spring is elastic. One end of the first spring is connected to the first piston, and the other end is connected to the hook head. The first spring is used to provide an elastic force to keep the shielding component in the second state. During the process of the shielding component changing from the second state to the first state, the deformation amount of the first spring gradually increases.

[0008] As a preferred technical solution of the present application, the baffle includes a first baffle part and a second baffle part. The first baffle part is located in the area of the baffle closer to the hook head compared to the second baffle part. When the shielding component is in the second state, the two first baffle parts on a single shielding component are in contact, and there is a gap between the two second baffle parts on a single shielding component; The two first baffle parts on a single shielding component are used to squeeze and clamp the upper suture on the tissue to be sutured, so as to pull the upper suture.

[0009] As a preferred technical solution of the present application, a plurality of grooves are provided on one of the first baffle parts on a single shielding component. The grooves are located at the part of the first baffle part for contacting the other first baffle part. The plurality of grooves are distributed along the height direction of the first baffle part, and the upper suture can be stuck in the grooves.

[0010] As a preferred technical solution of the present application, the cross-sectional shape of the first piston is square or elliptical to prevent the first piston from rotating relative to the first chamber around its own central axis.

[0011] As a preferred technical solution of the present application, the hook further includes a pull rod, and the pull rod is connected to the hook head; The hook assembly for facilitating abdominal tissue suture includes a connecting piece and two hooks. The connecting piece is used to connect the two pull rods to limit the distance between the two hook heads.

[0012] As a preferred technical solution of the present application, a chute is provided on the connecting member, a slider is provided on the pull rod, the slider is stuck in the chute, and the slider can move along the length direction of the chute. A locking member is rotatably connected to the slider. By rotating the locking member relative to the slider, the locking member and the slider can clamp or release the clamping of the connecting member. When the locking member and the slider clamp the connecting member, the slider is fixed relative to the chute. When the locking member and the slider release the clamping of the connecting member, the slider can slide relative to the chute.

[0013] As a preferred technical solution of the present application, it further includes a second inflatable tube, and the second inflatable tube is communicated with a plurality of first inflatable tubes; The second inflatable tube is arranged on the pull rod.

[0014] As a preferred technical solution of the present application, the second inflatable tube is connected with a syringe, and the syringe includes a cylinder body and a second piston. The second piston is arranged in the cylinder body, and the second piston can move relative to the cylinder body along the length direction of the cylinder body to inject the gas in the cylinder body into the first chamber through the second inflatable tube, or to pump the gas in the first chamber to the cylinder body through the second inflatable tube.

[0015] As a preferred technical solution of the present application, the second piston is threadedly connected to the cylinder body. By rotating the second piston relative to the cylinder body, the second piston can move relative to the cylinder body along the length direction of the cylinder body.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. In the solution of this application, by setting a number of shielding components and enabling the shielding components to have a first state and a second state, when the hook component of this application is used to expand the abdominal tissue, the shielding components are in the second state, and the hook head has a toothless plate-like structure, so that the toothless plate-like structure can pull the abdominal tissue. In this state, a clearer surgical field of view can be provided for medical staff, improving the convenience of the medical staff during the operation. At the same time, its toothless plate-like structure can greatly increase the area of the abdominal tissue that is shielded, thus further improving the protective effect on the abdominal tissue during the operation; when it is necessary to suture the abdominal tissue, by inflating the first inflatable tube, the first chamber is inflated, thereby driving the first piston to move relative to the hook head, so that the first rod moves relative to the rotating column, driving the rotating column and the baffle to rotate around the central axis of the rotating column. Furthermore, the baffle rotates with the rotating column to the area between the two rotating columns, making the hook head have a toothless plate-like structure. In this state, the abdominal tissue is exposed from the area between the two rotating columns, so that while the hook expands the abdominal tissue, its toothed plate-like structure provides more operating space for suturing the abdominal tissue, facilitating the medical staff to insert the suture needle into the abdominal tissue in the area between the two rotating columns, thus improving the convenience of suturing; moreover, after a number of shielding components are provided on the hook head and are evenly distributed, when there are gaps formed between the two rotating columns on the same shielding component, a number of evenly distributed gaps are formed on the hook, so that it is convenient to control the spacing of the suture needle inserted into the abdominal tissue. Its a number of evenly distributed gaps play a positioning role, further improving the convenience of the medical staff for suturing; Moreover, during the process of the shielding component changing from the second state to the first state, at this time, the hook head gradually changes from a toothless plate-like structure to a toothed plate-like structure. During the rotation of the rotating column, it can squeeze and push the expanded tissue, so that the tissue converges towards the gap, and the gap is the area between the two rotating columns, which is more conducive to the part of the abdominal tissue for suturing to be exposed from the gap, further improving the convenience of suturing the abdominal tissue; At the same time, after the suture needle is inserted into the abdominal tissue, the gap formed between the two rotating columns is non-closed, which is convenient for subsequently taking out the suture from this gap, improving the convenience of removing the hook from the patient's abdomen. In this way, the hook component of this application achieves the purpose of improving the convenience of suturing the abdominal tissue while improving the convenience of expanding the abdominal tissue; 2. Further, by using the retractor assembly of the present application, during the process of tightening the suture, there are two stages. The first stage is to pull several upper-layer sutures to pull several tissue units, so as to tighten the lower-layer suture and gradually bring the two sides of the abdominal tissue closer until they are released from each other. The second stage is to pull the end of the suture to tighten the entire suture. By adopting the two stages, during the process of tightening the suture, the strain on the abdominal tissue can be reduced, and the difficulty of tightening the suture can be reduced, thereby improving the efficiency of the medical staff in tightening the suture. Especially for the case where the thickness of the sutured tissue is relatively thick, the improvement in the efficiency of tightening the suture and the reduction in the difficulty of tightening the suture are more obvious; Meanwhile, when suturing the abdominal tissue, since the abdominal tissue is held open by the retractor, it provides a better view for the medical staff to perform the suturing operation. At the same time, the tissue to be sutured is not easily displaced under the opening action of the retractor, further improving the accuracy of the medical staff in suturing the abdominal tissue and further reducing the suturing difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the retractor in one embodiment of a retractor assembly for facilitating abdominal tissue suturing of the present application when the shielding assembly is in the second state; Figure 2 It is a schematic structural diagram of the retractor in one embodiment of a retractor assembly for facilitating abdominal tissue suturing of the present application when the shielding assembly is in the first state; Figure 3 It is a schematic structural diagram of the shielding assembly in one embodiment of a retractor assembly for facilitating abdominal tissue suturing of the present application when the shielding assembly is in the second state; Figure 4 It is a schematic structural diagram of the shielding assembly in one embodiment of a retractor assembly for facilitating abdominal tissue suturing of the present application when the shielding assembly is in the first state; Figure 5 It is a schematic structural diagram of the position of the shielding assembly in one embodiment of a retractor assembly for facilitating abdominal tissue suturing of the present application; Figure 6 It is a schematic diagram when the suture sutures the abdominal tissue in one embodiment of a retractor assembly for facilitating abdominal tissue suturing of the present application and the retractor head is not shown; Figure 7 It is a schematic overall structural diagram of one embodiment of a retractor assembly for facilitating abdominal tissue suturing of the present application; Figure 8 It is a partial structural schematic diagram of the position of the connecting member in one embodiment of a retractor assembly for facilitating abdominal tissue suturing of the present application; Figure 9Schematic diagram of a partial structure of an occlusion component in a first state in a retractor assembly for facilitating abdominal tissue suture according to an embodiment of the present application; Figure 10 Schematic diagram of a partial structure of an occlusion component in a second state in a retractor assembly for facilitating abdominal tissue suture according to an embodiment of the present application; Reference numerals in the figure: 1 - retractor, 2 - retractor head, 3 - occlusion component, 4 - occluder, 5 - rotating column, 6 - baffle, 7 - first chamber, 8 - first piston, 9 - first rod body, 10 - first inflatable tube, 11 - first spring, 12 - first part of the baffle, 13 - second part of the baffle, 14 - upper suture, 15 - lower suture, 16 - groove, 17 - pull rod, 18 - connecting piece, 19 - sliding groove, 20 - slider, 21 - locking piece, 22 - second inflatable tube, 23 - syringe, 24 - cylinder body, 25 - second piston. Detailed implementation manners

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0019] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0020] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0021] It should be noted that like reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0023] Example 1: A retractor assembly for facilitating abdominal tissue suture provided in this example is shown in Figures 1 - 10 Figure 1. It includes a retractor 1. The retractor 1 includes a retractor head 2. A plurality of sets of shielding components 3 are arranged on the retractor head 2. A single shielding component 3 includes two shielding members 4 arranged oppositely. The shielding member 4 includes a rotating column 5 and a baffle 6. The rotating column 5 is rotatably connected to the retractor head 2; A first chamber 7 is further arranged on the retractor head 2. A first piston 8 is arranged in the first chamber 7. The first piston 8 is connected with a first rod body 9. The first rod body 9 is in screw fit with the rotating column 5. The first chamber 7 is communicated with a first inflatable tube 10. The first inflatable tube 10 is used for inflating and deflating the first chamber 7 to drive the first piston 8 to move relative to the retractor head 2, so that the first rod body 9 moves relative to the rotating column 5, and drives the rotating column 5 to rotate self; The shielding component 3 has a first state and a second state. When the shielding component 3 is in the first state, the area between the two rotating columns 5 is not blocked by the baffle 6, and the retractor head 2 has a toothed plate-like structure; When the shielding component 3 is in the second state, the two baffles 6 rotate with the rotating column 5 to the area between the two rotating columns 5, and the retractor head 2 has a toothless plate-like structure; When the retractor head 2 spreads the tissue, and during the rotation of the rotating column 5, so that the retractor head 2 changes from a toothless plate-like structure to a toothed plate-like structure, the rotating column 5 squeezes the spread tissue, so that the tissue converges towards the area between the two rotating columns 5 on the same shielding component 3.

[0024] In this application, by providing a number of shielding components 3, and enabling the shielding components 3 to have a first state and a second state, when the retractor component of this application is used to expand the abdominal tissue, the shielding components 3 are in the second state, and the retractor head 2 has a toothed plate-like structure, so that the toothed plate-like structure can be used to pull the abdominal tissue. In this state, a clearer surgical field of view can be provided for medical staff, improving the convenience of the medical staff during the operation. At the same time, its toothed plate-like structure can greatly increase the area of the abdominal tissue that is blocked, thereby further improving the protective effect on the abdominal tissue during the operation; when it is necessary to suture the abdominal tissue, by inflating the first inflatable tube 10, the first chamber 7 is inflated, thereby driving the first piston 8 to move relative to the retractor head 2, so that the first rod body 9 moves relative to the rotating column 5, thereby driving the rotating column 5 and the baffle 6 to rotate around the central axis of the rotating column 5. Furthermore, the baffle 6 rotates with the rotating column 5 to the area between the two rotating columns 5, making the retractor head 2 have a toothed plate-like structure. In this state, the abdominal tissue is exposed from the area between the two rotating columns 5, so that while the retractor 1 expands the abdominal tissue, its toothed plate-like structure provides more operating space for suturing the abdominal tissue, so that the medical staff can insert the suture needle into the abdominal tissue in the area between the two rotating columns 5, thereby improving the convenience of suturing; moreover, after a number of shielding components 3 are provided on the retractor head 2, the number of shielding components 3 is evenly distributed, so that when a gap is formed between the two rotating columns 5 on the same shielding component 3, a number of evenly distributed gaps can be formed on the retractor 1. In this way, it is convenient to control the spacing of the suture needle inserted into the abdominal tissue. Its number of evenly distributed gaps plays a positioning role, further improving the convenience of the medical staff for suturing. Moreover, during the process of the shielding component 3 changing from the second state to the first state, at this time, the retractor head 2 gradually changes from a toothed plate-like structure to a toothed plate-like structure. During the rotation of the rotating column 5, the expanded tissue can be pushed, so that the tissue converges towards the gap, which is the area between the two rotating columns 5, making it more conducive for the part of the abdominal tissue for suturing to be exposed from the gap, further improving the convenience of suturing the abdominal tissue. At the same time, after the suture needle is inserted into the abdominal tissue, the gap formed between the two rotating columns 5 is non-closed, which is convenient for subsequently removing the suture from this gap, improving the convenience of removing the retractor 1 from the patient's abdomen. In this way, the retractor component of this application achieves the purpose of improving the convenience of suturing the abdominal tissue while improving the convenience of expanding the abdominal tissue.

[0025] As a preferred embodiment, on the basis of the above-described manner, further, a first spring 11 is further provided on the hook head 2. The first spring 11 has elasticity. One end of the first spring 11 is connected to the first piston 8, and the other end is connected to the hook head 2. The first spring 11 is used to provide an elastic force to make the shielding assembly 3 in the second state. During the process of the shielding assembly 3 changing from the second state to the first state, the deformation amount of the first spring 11 gradually increases.

[0026] Further, by providing the first spring 11, the first spring 11 provides an elastic force to make the shielding assembly 3 in the second state. When the first inflatable tube 10 is inflated, the amount of gas in the first chamber 7 increases to push the first piston 8 to move, thereby making the first rod 9 move relative to the rotating column 5, thereby driving the rotating column 5 to rotate, and the deformation amount of the first spring 11 gradually increases. When the amount of gas in the first chamber 7 is subsequently reduced, the first spring 11 gradually recovers its deformation, thereby pushing the first piston 8 to move relative to the hook head 2. In this way, the convenience of the shielding assembly 3 changing from the second state to the first state and from the first state to the second state is further improved.

[0027] As a preferred embodiment, on the basis of the above-described manner, further, the baffle 6 includes a first baffle part 12 and a second baffle part 13. The first baffle part 12 is located in the area of the baffle 6 closer to the hook head 2 compared to the second baffle part 13. When the shielding assembly 3 is in the second state, the two first baffle parts 12 on a single shielding assembly 3 are in contact, and there is a gap between the two second baffle parts 13 on a single shielding assembly 3; The two first baffle parts 12 on a single shielding assembly 3 are used to squeeze and clamp the upper suture 14 on the tissue to be sutured, so as to pull the upper suture 14.

[0028] Further, by providing the first baffle part 12 and the second baffle part 13, and when the shielding assembly 3 is in the second state, making the two first baffle parts 12 on a single shielding assembly 3 contact each other, and leaving a gap between the two second baffle parts 13 on a single shielding assembly 3. Thus, on the basis of the retractor hook 1 stretching the abdominal tissue, when the shielding assembly 3 is in the first state, by suturing the abdominal tissue at the gap, the suture line connects the stretched bilateral abdominal tissues. When the suture line is sutured into the abdominal tissue using the continuous suture method, the suture line is divided into an upper suture line 14 and a lower suture line 15, where the upper suture line 14 corresponds to the first baffle part 12 and the lower suture line 15 corresponds to the second baffle part 13. After the suture line piercing operation is completed, the shielding assembly 3 is switched from the first state to the second state. At this time, the two first baffle parts 12 on a single shielding assembly 3 can squeeze and clamp the upper suture line 14, so that the two first baffle parts 12 self-clamp the upper suture line 14. Then, when the shielding assembly 3 remains in the second state, the retractor hook head 2 is removed from the patient's abdomen. At this time, since the upper suture line 14 is pulled by the corresponding two first baffle parts 12, the gap between the two second baffle parts 13 on a single shielding assembly 3 does not clamp the lower suture line 15. During the process of removing the retractor hook head 2 from the patient's abdomen, the clamped upper suture line 14 moves together with the retractor hook head 2. When the suture line sutures the abdominal tissue, multiple upper suture lines 14 and lower suture lines 15 can be formed. A single shielding assembly 3 pulls a single upper suture line 14. On the basis that there are several shielding assemblies 3 on the retractor hook head 2, several upper suture lines 14 are pulled, so as to divide the sutured abdominal tissue into several tissue units, and the several tissue units are pulled simultaneously. Under the action of the upper suture line 14 being pulled, the lower suture line 15 can be tightened, and the bilateral abdominal tissues gradually approach each other. When the lower suture line 15 is tightened until the bilateral abdominal tissues come into contact, by injecting air into the first chamber 7, the baffle 6 rotates around the rotating column 5, thereby increasing the distance between the two first baffle parts 12 on a single shielding assembly 3, so as to release the squeezing and clamping effect on the upper suture line 14, so that the retractor hook head 2 is separated from the suture line. Then, the medical staff manually pulls the end of the suture line to tighten the entire suture line. Thus, by using the retractor hook assembly of the present application, during the process of tightening the suture line, there are two stages. The first stage is to pull several upper suture lines 14 to pull several tissue units, so as to tighten the lower suture line 15 and make the bilateral abdominal tissues gradually approach each other until they are released; the second stage is to pull the end of the suture line to tighten the entire suture line; by adopting the two stages, during the process of tightening the suture line, the injury to the abdominal tissue can be reduced, and the difficulty of tightening the suture line can be reduced, thereby improving the efficiency of the medical staff in tightening the suture line. Especially for the case where the thickness of the sutured tissue is relatively thick, the improvement in the efficiency of tightening the suture line and the reduction in the difficulty of tightening the suture line are more obvious; Meanwhile, when suturing abdominal tissues, since the abdominal tissues are propped open by the retractor 1, it provides a better view for medical staff to perform the suturing operation. At the same time, the tissues to be sutured are not easily displaced under the propping action of the retractor 1, further improving the accuracy of medical staff when suturing abdominal tissues and further reducing the suturing difficulty. Moreover, since the abdominal tissues to be sutured have a certain thickness, when suturing the abdominal tissues, the upper suture 14 and the lower suture 15 for suturing are not in the same plane. Thus, when arranging the retractor head 2 on the patient's abdomen, the first part 12 of the baffle is placed at the position where the subsequent upper suture 14 is located, and the second part 13 of the baffle is placed at the position where the subsequent lower suture 15 is located, so as to facilitate the upper suture 14 to correspond to the first part 12 of the baffle and the lower suture 15 to correspond to the second part 13 of the baffle when the suture sutures the abdominal tissues.

[0029] As a preferred embodiment, on the basis of the above method, further, a plurality of grooves 16 are provided on one of the first parts 12 of the baffle on a single shielding component 3. The grooves 16 are located at the part of the first part 12 of the baffle for contacting with another first part 12 of the baffle. The plurality of grooves 16 are distributed along the height direction of the first part 12 of the baffle, and the upper suture 14 can be stuck in the grooves 16.

[0030] Furthermore, by providing a plurality of grooves 16 on one of the first parts 12 of the baffle on a single shielding component 3, when the two first parts 12 of the baffle squeeze and clamp the upper suture 14, the upper suture 14 can be stuck in the grooves 16, thereby improving the stability of the upper suture 14 being clamped.

[0031] Embodiment 2: On the basis of the technical solution of Embodiment 1, further, as shown in Figures 1 - 10 shown, the cross-sectional shape of the first piston 8 is square or elliptical to prevent the first piston 8 from rotating relative to the first chamber 7 about its own central axis.

[0032] Furthermore, making the cross-sectional shape of the first piston 8 square or elliptical can prevent the first piston 8 from rotating relative to the first chamber 7 about its own central axis. Thus, when the first piston 8 drives the first rod 9 to move along the length direction of the first chamber 7, the stability of the first rod 9 driving the rotating column 5 to rotate is improved; In the present application, a spiral sliding groove is provided on the first rod 9, and a sliding block is provided on the rotating column 5. The sliding block is stuck in the sliding groove. The first rod 9 and the rotating column 5 are in spiral fit through the sliding groove and the sliding block. When the first rod 9 moves along the length direction of the first chamber 7, the sliding block moves relative to the sliding groove, thereby driving the rotating column 5 to rotate.

[0033] As a preferred embodiment, on the basis of the above method, further, the retractor 1 further includes a pull rod 17, and the pull rod 17 is connected to the retractor head 2; The retractor assembly for facilitating abdominal tissue suture includes a connecting member 18 and two retractors 1. The connecting member 18 is used to connect the two pull rods 17 to define the distance between the two retractor heads 2.

[0034] Further, by providing the connecting member 18, the connecting member 18 connects the two pull rods 17 to define the distance between the two retractor heads 2, thereby improving the stability when the two retractor heads 2 cooperate to expand the abdominal tissue.

[0035] As a preferred embodiment, on the basis of the above method, further, a chute 19 is provided on the connecting member 18, a slider 20 is provided on the pull rod 17, the slider 20 is stuck in the chute 19, and the slider 20 can move along the length direction of the chute 19. A locking member 21 is rotatably connected to the slider 20. By rotating the locking member 21 relative to the slider 20, the locking member 21 and the slider 20 clamp or release the clamping of the connecting member 18. When the locking member 21 and the slider 20 clamp the connecting member 18, the slider 20 is fixed relative to the chute 19. When the locking member 21 and the slider 20 release the clamping of the connecting member 18, the slider 20 can slide relative to the chute 19.

[0036] Further, by providing the chute 19, the slider 20 and the locking member 21, when the locking member 21 rotates relative to the slider 20, the locking member 21 and the slider 20 clamp the connecting member 18, thereby fixing the slider 20 relative to the chute 19, thus improving the stability of the connection between the connecting member 18 and the pull rod 17; when the locking member 21 rotates relative to the slider 20 to release the clamping of the connecting member 18 by the locking member 21 and the slider 20, the slider 20 can slide relative to the chute 19, thereby facilitating the adjustment of the distance between the two retractors 1, and further facilitating the adjustment of the distance between the two retractor heads 2, thus further improving the convenience of adjusting the expansion degree of the abdominal tissue.

[0037] As a preferred embodiment, on the basis of the above method, further, a second inflatable tube 22 is further included, and the second inflatable tube 22 is communicated with a plurality of first inflatable tubes 10; The second inflatable tube 22 is provided on the pull rod 17.

[0038] Furthermore, by providing the second inflatable tube 22 and connecting the second inflatable tube 22 to a plurality of first inflatable tubes 10, when inflating and deflating the second inflatable tube 22, the plurality of first inflatable tubes 10 can be inflated and deflated synchronously, so as to synchronously switch the states of a plurality of sets of shielding components 3 on the hook head 2, thereby improving the convenience of switching between the first state and the second state of the plurality of sets of shielding components 3.

[0039] As a preferred embodiment, on the basis of the above method, further, the second inflatable tube 22 is connected to a syringe 23. The syringe 23 includes a cylinder 24 and a second piston 25. The second piston 25 is disposed within the cylinder 24 and can move relative to the cylinder 24 along the length direction of the cylinder 24 to inject the gas within the cylinder 24 into the first chamber 7 via the second inflatable tube 22, or to extract the gas within the first chamber 7 into the cylinder 24 via the second inflatable tube 22.

[0040] As a preferred embodiment, on the basis of the above method, further, the second piston 25 is threadedly connected to the cylinder 24. By rotating the second piston 25 relative to the cylinder 24, the second piston 25 can move relative to the cylinder 24 along the length direction of the cylinder 24.

[0041] Furthermore, by providing the cylinder 24 and the second piston 25 and threadedly connecting the second piston 25 to the cylinder 24, by rotating the second piston 25 relative to the cylinder 24, the second piston 25 can move relative to the cylinder 24 along the length direction of the cylinder 24, thereby facilitating the injection of the gas within the cylinder 24 into the first chamber 7 via the second inflatable tube 22, and also facilitating the extraction of the gas within the first chamber 7 into the cylinder 24 via the second inflatable tube 22, thereby improving the convenience of adjusting the gas volume within the first chamber 7. Moreover, with the threaded connection between the second piston 25 and the cylinder 24, when the second piston 25 is rotated without external force, the second piston 25 can be fixed relative to the cylinder 24, thereby facilitating the maintenance of the gas volume within the first chamber 7.

[0042] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above respective embodiments, the present invention is not limited to the above specific embodiments. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. A retractor assembly for facilitating abdominal tissue suture, characterized in that: It includes a hook, the hook includes a hook head, the hook head is provided with a plurality of shielding components, a single shielding component includes two shielding members arranged opposite to each other, the shielding member includes a rotating column and a baffle, and the rotating column is rotatably connected to the hook head; The hook head is also provided with a first chamber, the first chamber is provided with a first piston, the first piston is connected with a first rod body, the first rod body is screwed with the rotating column, the first chamber is connected with a first inflation tube, the first inflation tube is used to inflate and deflate the first chamber, so as to drive the first piston to move relative to the hook head, so as to make the first rod body move relative to the rotating column, so as to drive the rotating column to rotate; The shielding assembly has a first state and a second state. When the shielding assembly is in the first state, the area between the two rotating columns is not shielded by the baffle, so that the hook head has a plate-like structure with teeth; When the shielding assembly is in the second state, the two baffles rotate with the rotating column to the area between the two rotating columns, so that the hook head is a toothless plate-like structure; When the hook head stretches the tissue and the rotating column rotates to change the hook head from a toothless plate structure to a toothed plate structure, the rotating column pushes the stretched tissue to make the tissue converge toward the area between the two rotating columns on the same shielding component.

2. The retractor assembly for facilitating abdominal tissue suture according to claim 1, wherein: A first spring is also provided on the hook head. The first spring is elastic. One end of the first spring is connected to the first piston, and the other end is connected to the hook head. The first spring is used to provide elastic force to put the shielding assembly in the second state. During the process of the shielding assembly changing from the second state to the first state, the deformation of the first spring gradually increases.

3. The retractor assembly for facilitating abdominal tissue suture according to claim 2, characterized in that: The baffle plate includes a baffle portion one and a baffle portion two, the baffle portion one is located on the baffle plate in an area close to the hook head compared to the baffle portion two, and when the shielding assembly is in the second state, the two baffle portions one on a single shielding assembly are in contact, and there is a gap between the two baffle portions two on a single shielding assembly; One of the two baffles on a single shielding assembly is used to squeeze and clamp the upper layer of sutures on the sutured tissue to pull the upper layer of sutures.

4. The retractor assembly for facilitating abdominal tissue suture according to claim 3, wherein: A plurality of grooves are arranged on one of the baffle parts on a single shielding assembly. The grooves are located at a position on the baffle part for contacting another baffle part. The plurality of grooves are distributed along the height direction of the baffle part, and the upper stitches can be stuck in the grooves.

5. The retractor assembly for facilitating abdominal tissue suture according to claim 4, wherein: The cross-section of the first piston is square or elliptical to prevent the first piston from rotating around its own central axis relative to the first chamber.

6. The retractor assembly for facilitating abdominal tissue suture according to claim 5, wherein: The retractor also includes a pull rod, which is connected to the retractor head; The retractor assembly for suturing abdominal tissues comprises a connecting piece and two retractors, wherein the connecting piece is used to connect two pull rods to limit the distance between the two retractor heads.

7. The retractor assembly for facilitating abdominal tissue suture according to claim 6, characterized in that: A chute is provided on the connecting member, a slider is provided on the pull rod, the slider is stuck in the chute, and the slider can move along the length direction of the chute. A locking member is rotatably connected to the slider. By rotating the locking member relative to the slider, the locking member and the slider clamp or release the clamping of the connecting member. When the locking member and the slider clamp the connecting member, the slider is fixed relative to the chute. When the locking member and the slider release the clamping of the connecting member, the slider can slide relative to the chute.

8. The retractor assembly for facilitating abdominal tissue suture according to claim 7, wherein: It further includes a second inflation tube, and the second inflation tube is communicated with a plurality of first inflation tubes; The second inflation tube is arranged on the pull rod.

9. The retractor assembly for facilitating abdominal tissue suture according to claim 8, wherein: The second inflation tube is connected with a syringe. The syringe includes a cylinder body and a second piston. The second piston is arranged in the cylinder body, and the second piston can move relative to the cylinder body along the length direction of the cylinder body to inject the gas in the cylinder body into the first chamber through the second inflation tube, or pump the gas in the first chamber to the cylinder body through the second inflation tube.

10. A retractor assembly for facilitating abdominal tissue suturing according to claim 9, characterized in that: The second piston is threadedly connected to the cylinder body. By rotating the second piston relative to the cylinder body, the second piston moves relative to the cylinder body along the length direction of the cylinder body.

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