Special hook for thoracoscopic heart surgery without punching

Abstract

The application discloses a special retractor for thoracoscope heart surgery without punching, and belongs to the technical field of medical operation retractors. In view of the problem that the traditional retractor is difficult to accurately operate and pull the tissue in the narrow space in the thoracoscope heart surgery, the retractor body, the expansion mechanism and the elastic protection mechanism are arranged, the air inlet channel is arranged in the retractor body, the proximal end of the air inlet channel is connected with the inflation equipment, the expansion mechanism is connected with the distal end of the retractor body and communicates with the air inlet channel, the expansion mechanism is used for supporting and exposing the operation area, the elastic protection mechanism is circumferentially arranged outside the expansion mechanism, and is used for preventing the expansion mechanism from damaging the tissue in the operation area when the expansion mechanism is expanded. The external inflation equipment is used for inflating the pulling support rod, the cooperation of the magnetic block and the movable cylinder and the cooperation of the X-shaped movable rod and the straight rod are used for controlling the movement of the pulling support rod and the following support rod, so that the supporting state of the expansion mechanism is adjusted, the operation area incision can be effectively supported and opened, and the operation can be smoothly performed.

Description

Technical Field

[0001] This invention relates to the field of medical surgical retractor technology, and in particular to a retractor specifically designed for non-drilling thoracoscopic cardiac surgery. Background Technology

[0002] Heart surgery involves the complex structure and vital functions of the heart, requiring extremely high precision in the surgical procedure. Traditional heart surgery typically involves open-chest surgery, which requires a large incision to expose the heart. This surgical approach is highly invasive, severely damaging the integrity of the patient's chest wall, leading to significant postoperative pain, prolonged recovery time, and a high risk of various complications such as lung infection and incision site infection.

[0003] In recent years, thoracoscopic techniques have been increasingly applied to cardiac surgery. Thoracoscopic cardiac surgery has advantages such as minimal trauma, less bleeding, less pain, faster recovery, shorter hospital stay, and better cosmetic results. It usually requires the use of special extended instruments and the use of a video-assisted thoracoscopic system to display and magnify the surgical field. The surgeon performs the surgery by watching the display screen rather than under direct vision. This surgery is different from traditional median thoracotomy. The surgical incision is small and the operating space is limited, making it more difficult to expose the surgical field. Traditional retractors are difficult to operate precisely and effectively in a confined space, and may also cause damage to surrounding tissues and organs.

[0004] Therefore, there is an urgent need to develop retractors specifically designed for thoracoscopic cardiac surgery, in order to more precisely pull tissues during the operation, reduce damage to tissues and organs, and thus minimize the incidence of surgical complications. Summary of the Invention

[0005] To address the deficiencies in the existing technology, this invention aims to provide a special retractor for non-drilling thoracoscopic cardiac surgery. It features a hexagonal support structure composed of a traction strut and a follow-up strut, forming an expandable space. The state of the expandable space is controlled by the air pressure of an external inflation device, thereby opening the cardiac incision to fully expose the surgical field and providing convenience for the surgeon, thus solving the problems existing in the background technology.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A retractor for non-drilling thoracoscopic cardiac surgery, characterized by comprising:

[0008] The hook body has an air intake channel running through it, and the near end of the air intake channel is connected to the inflation device;

[0009] An expansion mechanism is connected to the far end of the hook body and communicates with the air intake channel. The expansion mechanism opens up and exposes the surgical area.

[0010] The elastic protection mechanism is arranged in a circumferential ring outside the expansion mechanism, and is used for preventing the expansion mechanism from causing damage to the tissue in the operation area when the expansion mechanism is expanded.

[0011] As a further preferred embodiment of the above technical solution, the expansion mechanism comprises a support assembly and a traction assembly, the support assembly is connected with the drag hook body, and the traction assembly is arranged on the support assembly.

[0012] As a further preferred embodiment, the support assembly is a regular hexagonal structure formed by two-by-two connection of one traction support rod and five follow-up support rods, and the traction support rod is connected with the drag hook body.

[0013] As a further preferred embodiment, the traction support rod is in a hollow cylindrical structure, and the traction support rod and the adjacent follow-up support rod and the two adjacent follow-up support rods are movably connected.

[0014] Based on the above technical solution, further, the traction assembly comprises a magnetic block, a first traction device and a second traction device, the magnetic block is arranged in the interior of the traction support rod, and the first traction device and the second traction device are arranged between the traction support rod and the follow-up support rod or between the two follow-up support rods.

[0015] Based on the above technical solution, further, the first traction device is arranged above the second traction device, the first traction device comprises two straight rods which are hingedly connected with each other, and the two straight rods are connected with the traction support rod or the follow-up support rod through the mounting cylinder at the ends away from each other.

[0016] Based on the above technical solution, further, the second traction device comprises an X-shaped movable rod, a movable cylinder and a limiting cylinder, the movable cylinder is movably sleeved on the traction support rod or the follow-up support rod, the limiting cylinder is fixedly sleeved on the traction support rod or the follow-up support rod, the upper end of the X-shaped movable rod is connected with the traction support rod or the follow-up support rod through the movable cylinder, and the lower end of the X-shaped movable rod is connected with the traction support rod or the follow-up support rod through the limiting cylinder.

[0017] Based on the above technical solution, further, an iron sheet cylinder is embedded in the interior of the movable cylinder on the traction support rod, and the iron sheet cylinder is magnetically matched with the magnetic block.

[0018] As a further preferred embodiment of the above technical solution, the elastic protection mechanism adopts an elastic cloth which is matched with the height of the traction support rod, and the elastic cloth is sleeved outside the support assembly.

[0019] Compared with the prior art, the technical solution of the present application can produce the following effects:

[0020] 1. By setting the expansion mechanism, it includes a pulling support rod and five follow-up support rods matched with it, the pulling support rod and the follow-up support rod are connected by the traction assembly, thereby forming a regular hexagonal structure that can be expanded to different degrees, and the expansion mechanism is used to complete the expansion of the heart surgery incision, fully exposing the surgical field, facilitating smooth and rapid surgical operation.

[0021] 2. The traction assembly of the present application includes a magnetic block arranged in the pulling support rod, and a straight rod and an X-shaped movable rod movably connected between the pulling support rod and the adjacent follow-up support rod and between two adjacent follow-up support rods. The magnetic block moves up and down by filling gas in the pulling support rod, the movable cylinder on the pulling support rod moves up and down through the attraction between the magnetic block and the iron cylinder in the movable cylinder, the X-shaped movable rod connected with the movable cylinder on the pulling support rod is unfolded, at this time the movable cylinder on the follow-up support rod adjacent to the pulling support rod moves in cooperation, and the two straight rods at the upper end of the pulling support rod move away from each other to open, sequentially transmitting the opening of the two straight rods between the follow-up support rods, and finally the expansion mechanism realizes the effect of expansion or contraction.

[0022] 3. The present application uses external air pressure equipment to push the magnetic block inside the pulling support rod to move to control the opening size of the expansion mechanism, which is convenient to operate and controllable in opening size, suitable for the expansion operation of different surgical incisions, and the elastic cloth is sleeved on the periphery of the expansion mechanism, which can well protect the tissues at the incision and avoid damage to the tissues at the incision.

[0023] 4. The retractor of the present application is directly placed into the heart surgery incision during use, without the need for additional perforation at the chest wall, reducing the degree of trauma to the patient, which is beneficial to alleviate the patient's pain and shorten the postoperative recovery period. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows.

[0025] Figure 1 is a structural schematic view of the retractor in the expanded state of the present application without punching the thoracoscope heart surgery;

[0026] Figure 2 is a structural schematic view of the expansion mechanism of the present application;

[0027] Figure 3 is a cross-sectional view of the pulling support rod of the expansion mechanism of the present application;

[0028] Figure 4 is a partial structural schematic view of the traction assembly of the present application;

[0029] Figure 5 is a cooperation relationship diagram of the magnetic block and the movable cylinder of the present application;

[0030] Figure 6 Figure 1 is a structural schematic diagram of a special retractor for thoracoscope heart surgery in a retracted state according to the present application;

[0031] Figure 7 Figure 2 is a structural schematic diagram of a special retractor for thoracoscope heart surgery in an expanded state according to the present application;

[0032] In the figure: 1, retractor body; 2, expansion mechanism; 21, support assembly; 211, pulling support rod; 212, following support rod; 22, traction assembly; 221, magnetic block; 222, first tractor; 2221, straight rod; 2222, mounting cylinder; 223, second tractor; 2231, X-shaped movable rod; 2232, movable cylinder; 2233, limiting cylinder; 2234, iron cylinder; 3, elastic protection mechanism; 4, elbow; 5, inflation device. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.

[0034] At present, thoracoscope heart surgery is widely used in clinical practice due to its small trauma, light pain, and fast recovery. Thoracoscope heart surgery is different from traditional median thoracotomy (large thoracotomy) heart surgery, and usually only needs to use lengthened instruments to cooperate with a display screen of a thoracoscope system to enlarge the surgical field. The operator performs the surgery by watching the display screen rather than direct vision. Therefore, the retractor used in traditional large thoracotomy cannot be applied to thoracoscope surgery with small incisions. Based on this, the inventors designed a regular hexagonal cooperation type telescopic structure using air pressure to control the state of opening the incision, according to the small incision of thoracoscope heart surgery. The opening degree is determined according to the actual situation of the patient and the requirements of the surgery, which helps to quickly open the atrial wall around the surgical incision, fully exposes the intracardiac structure and valve to make the surgery more smoothly, and at the same time, the special retractor does not need to perforate the chest wall of the patient again, greatly reduces the secondary trauma to the patient, and is beneficial to the recovery of the patient after the surgery.

[0035] Embodiment one:

[0036] Reference Figures 1-7This invention discloses a retractor for non-drilling thoracoscopic cardiac surgery, comprising a retractor body 1, an expansion mechanism 2, and an elastic protective mechanism 3. The retractor body 1 has an L-shaped structure, with one end inserted through the patient's chest cavity opening and extending to the surgical incision. An air intake channel is provided inside the retractor body 1, and the proximal end of the air intake channel (the end held by the doctor) is connected to an inflation device 5. The expansion mechanism 2 is connected to the distal end of the retractor body 1 (the end operated by the doctor), and the expansion mechanism 2 is connected to the retractor body 1 through a bend 4, thereby connecting the expansion mechanism 2 to the air intake channel. The expansion mechanism 2 is used to open and expose the surgical area. The elastic protective mechanism 3 is circumferentially arranged around the outside of the expansion mechanism 2 to protect the surgical area tissue and prevent damage to the surgical area tissue caused by the expansion of the expansion mechanism 2.

[0037] like Figures 2-5 As shown, the expansion mechanism 2 is a telescopic structure, which includes a support component 21 and a traction component 22. The support component 21 is connected to the hook body 1 through a bent pipe 4. One end of the bent pipe 4 is sleeved on the support component 21, and the interior of the bent pipe 4 communicates with the support component 21. The other end of the bent pipe 4 is detachably connected to the hook body 1. The traction component 22 is set on the support component 21.

[0038] Specifically, the support assembly 21 is a regular hexagonal structure consisting of a traction strut 211 and five follower struts 212 connected in sequence. The traction strut 211 is a hollow thin-walled cylindrical structure, and a bent pipe 4 is connected to the traction strut 211. The traction strut 211 is connected to the air intake channel in the hook body 1 through the bent pipe 4. The traction strut 211 and the adjacent follower struts 212, as well as two adjacent follower struts 212, are movably connected. In use, the traction assembly 22 moves the traction strut 211 and the other follower struts 212 away from each other, so that the regular hexagonal space formed by the traction strut 211 and the five follower struts 212 gradually expands, thereby effectively opening up the surgical area tissue to fully expose the surgical field.

[0039] In a preferred embodiment, the traction assembly 22 includes a magnetic block 221, a first traction device 222, and a second traction device 223, such as... Figure 3 As shown, the magnetic block 221 is installed inside the traction support rod 211. The magnetic block 221 is in frictional contact with the inner wall of the traction support rod 211. When the traction support rod 211 above the magnetic block 221 is filled with gas, the magnetic block 221 can slide smoothly up and down in the traction support rod 211. The first traction device 222 and the second traction device 223 are distributed between the traction support rod 211 and the follower support rod 212 or between two follower support rods 212. Through the support and cooperation of the first traction device 222 and the second traction device 223, the two adjacent traction support rods 211 and follower support rods 212 are pushed to move away from each other.

[0040] In the embodiment, the first traction device 222 is arranged above the second traction device 223, and the first traction device 222 and the second traction device 223 are preferably arranged as follows:

[0041] As shown in Figure 4 , the first traction device 222 comprises straight rods 2221 and mounting cylinders 2222, the mounting cylinders 2222 are fixedly connected to the traction support rods 211 or the follow-up support rods 212, the support rods are provided with two ends close to each other and hinged, and the two straight rods 2221 are respectively movably connected to the corresponding mounting cylinders 2222 at the ends away from each other.

[0042] As shown in Figures 4-5 , the second traction device 223 comprises X-shaped movable rods 2231, movable cylinders 2232 and limiting cylinders 2233, the movable cylinders 2232 are movably sleeved on the traction support rods 211 or the follow-up support rods 212, the limiting cylinders 2233 are fixedly sleeved on the traction support rods 211 or the follow-up support rods 212, the upper ends of the X-shaped movable rods 2231 are connected to the traction support rods 211 or the follow-up support rods 212 through the movable cylinders 2232, and the lower ends of the X-shaped movable rods 2231 are connected to the traction support rods 211 or the follow-up support rods 212 through the limiting cylinders 2233, preferably, an iron cylinder 2234 is embedded in the movable cylinder 2232 on the traction support rod 211, the iron cylinder 2234 is magnetically matched with the magnetic block 221, and the movable cylinder 2232 is driven by the magnetic block 221 to move up and down along the outer wall of the traction support rod 211 or the follow-up support rod 212.

[0043] As a preferred embodiment, the elastic protection mechanism 3 adopts elastic cloth which is matched with the height of the traction support rod 211, as shown in Figure 1 , Figure 6 , the elastic cloth is sleeved outside the support assembly 21, and the elastic cloth is a medical bandage or other materials suitable for surgical incisions, which can be stretched or contracted to prevent further damage to the tissues of the wound during the expansion of the surgical incision.

[0044] Embodiment two:

[0045] On the basis of the above-mentioned embodiment one, in order to further improve the operation convenience of the traction assembly 22, the follow-up support rod 212 is further improved in the embodiment.

[0046] Each follow-up support rod 212 is provided as a hollow structure, and the same magnetic block 221 as in the pulling support rod 211 is installed in each follow-up support rod 212 and frictionally matched between the magnetic block 221 and the inner wall of the follow-up support rod 212, so that after the follow-up support rod 212 is filled with gas, the magnetic block 221 can smoothly slide up and down in the follow-up support rod 212. In the embodiment, two adjacent pulling support rods 211 and follow-up support rods 212 and two adjacent follow-up support rods 212 are respectively connected by gas guide pipes. Thus, when the gas enters the pulling support rod 211 from the gas inlet channel in the pull hook body 1 through the elbow pipe 4, the gas enters the other follow-up support rods 212 in sequence through the connected gas guide pipes, and the magnetic block 221 in the pulling support rod 211 and each follow-up support rod 212 is simultaneously pushed downward, so that the magnetic block 221 drives the movable cylinder 2232 matched therewith to move downward. During the downward movement of the movable cylinder 2232, the X-shaped movable rod 2231 and the two straight rods 2221 hingedly connected to each other are respectively changed from the contracted state to the expanded state, so that the internal space formed by the pulling support rod 211 and the follow-up support rod 212 gradually increases, and the elastic protection mechanism 3 sleeved on the pulling support rod 211 and the follow-up support rod 212 is also simultaneously expanded. By controlling the filling and discharging of the gas in the pulling support rod 211 and the follow-up support rod 212, the pulling support rod 211 and the follow-up support rod 212 can be accurately controlled. The expansion of the support assembly 21 expands the surgical field to the required surgical field, and provides a more flexible and reliable atrial wall expansion tool for the surgeon, so that the surgical process is safer and more efficient.

[0047] Embodiment three:

[0048] The special pull hook for thoracoscope heart surgery without punching hole in the application can be used in clinical practice (the operation principle is based on the structure of embodiment one) as follows:

[0049] Firstly, the doctor inserts the expanded mechanism 2 in the contracted state from the heart surgery incision downward, so that the expanded mechanism 2 is embedded around the atrial wall tissue of the surgery incision, and the pull hook body 1 is connected to the end of the elbow pipe 4.

[0050] Then, the inflation device 5 (such as an inflation pump) is connected to the proximal end of the hook body 1, and the pressure formed by inflating gas controls the opening range of the expansion mechanism 2. The opening principle of the expansion mechanism 2 is as follows: the gas enters the inner cavity of the pulling strut 211 through the gas inlet channel in the hook body 1 and the elbow pipe 4, and pushes the magnetic block 221 to move downward. In the process of moving downward, the magnetic block 221 attracts the embedded iron cylinder 2234 in the movable cylinder 2232, so that the movable cylinder 2232 moves downward along the axial direction of the pulling strut 211. In the process of moving downward from top to bottom, the X-shaped movable rod 2231 is slowly unfolded from the contracted state, and at the same time, the two straight rods 2221 connected with the X-shaped movable rod 2231 are pushed from the bent state to the straight state. In the state change process of the X-shaped movable rod 2231 and the two straight rods 2221, the pulling strut 211 and the following strut 212 move away from each other, so that the expansion mechanism 2 is slowly opened from the contracted state, thereby supporting the atrial wall tissue, and better exposing the valve and other intracardiac structures.

[0051] In this process, the elastic protection mechanism 3 is deformed adaptively with the movement of the pulling strut 211 and the following strut 212, and plays a good protection role on the surgical tissue. After the surgical incision is expanded, the doctor can smoothly perform a thoracoscopic heart surgery.

[0052] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A punchless thoracoscopic heart surgery specific retractor characterized in that, The utility model relates to a medical device technical field, and particularly a kind of medical device for exposing operation area. Including: Drag hook body (1), inside through opening is equipped with air inlet channel, the proximal end of air inlet channel connects inflation equipment (5); Expansion mechanism (2) is connected in the distal end of drag hook body (1) and is communicated with air inlet channel, inflation equipment (5) is formed by filling gas to the pressure control opening amplitude of expansion mechanism (2) in drag hook body (1), and the opening amplitude of expansion mechanism (2) is controlled; Expansion mechanism (2) includes support assembly (21) and traction assembly (22), support assembly (21) is connected with drag hook body (1), traction assembly (22) is set up on support assembly (21), support assembly (21) is a positive hexagonal structure that two two connections of five follow-up support rods (212) and one traction support rod (211), traction support rod (211) is connected on drag hook body (1), traction assembly (22) includes magnetic block (221), first tractor (222) and second tractor (223), magnetic block (221) is set up in the inside of traction support rod (211), first tractor (222) and second tractor (223) are arranged between traction support rod (211) and follow-up support rod (212) or between two follow-up support rods (212); Second tractor (223) includes X-shaped movable rod (2231), movable cylinder (2232) and limiting cylinder (2233), movable cylinder (2232) is movably sleeved on traction support rod (211) or follow-up support rod (212), limiting cylinder (2233) is fixedly sleeved on traction support rod (211) or follow-up support rod (212), the upper end of X-shaped movable rod (2231) is connected with traction support rod (211) or follow-up support rod (212) through movable cylinder (2232), and the lower end of X-shaped movable rod (2231) is connected with traction support rod (211) or follow-up support rod (212) through limiting cylinder (2233); The inside of movable cylinder (2232) on traction support rod (211) is embedded with iron cylinder (2234), and iron cylinder (2234) and magnetic block (221) are magnetically matched; 2. The punchless pectus specific retractor for thoracoscopic cardiac surgery of claim 1, wherein, Elastic protection mechanism (3) is circumferentially annularly arranged outside expansion mechanism (2), for preventing expansion mechanism (2) from causing damage to operation area tissue when expanding.

3. The punchless pectus specific retractor for thoracoscopic cardiac surgery of claim 1, wherein, Traction support rod (211) is hollow cylindrical structure, and traction support rod (211) and adjacent follow-up support rod (212) are movably connected.

4. The punchless pectus specific retractor for thoracoscopic cardiac surgery of claim 1, wherein, First tractor (222) is arranged above second tractor (223), and first tractor (222) includes two straight rods (2221) hingedly connected with each other, and the ends of the two straight rods (2221) away from each other are connected to traction support rod (211) or follow-up support rod (212) through mounting cylinder (2222). Elastic protection mechanism (3) adopts elastic cloth with a height suitable for traction support rod (211), and the elastic cloth is sleeved outside support assembly (21).

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