Minimally invasive surgery taking-out device and taking-out system

Abstract

The utility model discloses a minimally invasive surgery taking-out device and a taking-out system. The taking-out device can comprise a passage piece, a fixing clamp and a cutter. Wherein the access piece is used for establishing a surgical access for surgical operation; the fixing clamp and the cutter can be used for extending into the surgical access and extending out of the far end of the access piece; the fixing clamp is used for fixing and clamping the cut target extraction object, and the cutter is used for cutting the target extraction object and taking out the cut target extraction object through the fixing clamp. On one hand, compared with a plurality of operation channels, the taking-out device has the advantages that the operation risk is reduced through one operation channel; on the other hand, the object is fixedly clamped and taken out through the fixing clamp, so that the object to be taken out is firmly clamped, the risk that a filter screen is not used for filtering thoroughly is also avoided, and the operation safety is enhanced; and thirdly, the fixing clamp and the cutter are matched for operation, so that the operation precision is improved.

Description

[0001] Cross-reference to related applications

[0002] This application claims the benefit of Chinese patent application 2024117949099 entitled “Minimally Invasive Non-Stop Removal System”, filed on December 6, 2024, which is incorporated herein by reference in its entirety. Technical Field

[0003] This utility model relates to the field of medical device technology, and in particular to a minimally invasive surgical removal device and removal system. Background Technology

[0004] The heart contains four chambers: the right atrium (RA), right ventricle (RV), left atrium (LA), and left ventricle (LV). Throughout the cardiac cycle, the pumping action of the left and right sides of the heart generally occurs synchronously. The valves separating the atria and ventricles are called atrioventricular valves, which act as one-way valves, ensuring the normal flow of blood within the heart chambers. The atrioventricular valve between the left atrium and left ventricle is the mitral valve, and the atrioventricular valve between the right atrium and right ventricle is the tricuspid valve. The pulmonary valve directs blood flow to the pulmonary artery and then to the lungs, before returning to the left atrium via the pulmonary veins. The aortic valve guides blood flow through the aorta and from there to the periphery. At the onset of ventricular filling (diastole), the aortic and pulmonary valves close to prevent backflow of blood from the arteries into the ventricles. Shortly thereafter, the atrioventricular valves open to allow unimpeded flow of blood from the atria into the corresponding ventricles. Shortly after the onset of ventricular systole, the tricuspid and mitral valves close normally, thus preventing blood from flowing back from the ventricles into the corresponding atria.

[0005] Mitral regurgitation (MR) is a common valvular disease characterized by the abnormal flow of blood from the left ventricle into the left atrium during cardiac contraction. For patients with MR, minimally invasive transcatheter valve clipping is typically used to improve the condition. This technique is based on the principle of edge-to-edge valve clipping. The clip is delivered to the mitral valve via an interventional catheter, and then the clips simultaneously clamp the anterior and posterior leaflets of the mitral valve, fixing them in place and thus reducing the leaflet gap and mitral regurgitation. Patients who have undergone minimally invasive valve clipping may experience recurrence of regurgitation or stenosis several years later due to factors such as ventricular enlargement, rheumatic mitral valve disease, inflammatory valvular disease, severe valvular calcification, or valve tissue hyperplasia caused by clip compression. In such cases, secondary repair is necessary. Before secondary repair, the implanted valve clip and the valve tissue fixed by the clip must be removed. However, current valve clips cannot be removed from the patient's body via interventional catheters and can only be removed surgically. This procedure is costly, difficult, and carries high risks, as some patients cannot tolerate it.

[0006] Furthermore, when an artificial bioprosthetic valve malfunctions (e.g., fails) and needs replacement with a "valve-in-a-valve" procedure, the leaflet of the bioprosthetic valve obstructing the coronary artery ostium must be cut and removed to prevent obstruction. Similarly, when replacing a bioprosthetic valve due to calcification or damage, and the patient needs to remove the diseased, autologous valve before placing the bioprosthetic valve, the diseased valve also needs to be cut and removed. Current technology cannot simultaneously capture, cut, and remove valve clips as well as capture, cut, and remove leaflets from both autologous and bioprosthetic valves. Utility Model Content

[0007] To enable the removal of implanted valve clips without stopping the heart, and to enable the removal of autologous diseased valves and the intervention of artificial bio-valve without stopping the heart; or to enable the removal of leaflets of artificial bio-valve without stopping the heart to prevent them from blocking the coronary artery ostium and to assist in the intervention of valve-in-valve, this utility model proposes a minimally invasive surgical removal device and removal system.

[0008] In a first aspect, this utility model provides a minimally invasive surgical removal device, which may include: a passage component, a fixing clip, and a cutter; wherein, the passage component is used to establish a surgical passage for surgical operations; the fixing clip and the cutter are used to extend into the surgical passage and extend from the distal end of the passage component; the fixing clip is used to fix and clamp the cut target object, and the cutter is used to cut the target object and remove the cut target object through the fixing clip.

[0009] In one embodiment, the above-described minimally invasive surgical removal device may further include: a connecting tube that matches the fixation clamp and the cutter, wherein the fixation clamp, the cutter and the connecting tube are movable relative to each other, and the fixation clamp and the cutter are available to extend from the distal end of the connecting tube;

[0010] The outer diameter of the connecting pipe is smaller than the inner diameter of the passage component, and the connecting pipe is used to drive the fixing clamp and the cutter to move within the passage component.

[0011] In one embodiment, the cutter is an electric looper; the electric looper and the retaining clamp are movably inserted through the connecting tube and extend from the distal end of the connecting tube;

[0012] The fixing clamp includes a clamping part, and the electric coil includes a shaping collar and two cables connected to the shaping collar. The shaping collar is made of shape memory material. The shaping collar is sleeved on the outside of the clamping part, and the two cables extend from the proximal end of the connecting tube. The clamping part is connected to the distal end of the connecting tube.

[0013] In one embodiment, the cutter is an electric looper; the retaining clamp is movably inserted through the connecting tube and extends from the distal end of the connecting tube;

[0014] A slide rail is provided on the outside of the connecting tube, and the electric coil holder can slide on the slide rail; the fixing clamp includes a clamping part, and the electric coil holder includes a shaping collar and two cables connected to the shaping collar. The shaping collar is made of shape memory material; the shaping collar is sleeved on the outside of the clamping part, and the two cables extend out of the proximal end of the connecting tube; the clamping part is connected to the distal end of the connecting tube.

[0015] In one embodiment, the cutter is an electric coil catcher, which includes a shaped coil and two cables connected to the shaped coil; the fixing clamp includes a clamping part and a connecting rod connected to the clamping part; the shaped coil is sleeved on the outside of the clamping part;

[0016] The cable is fitted with a snake-bone joint on the outside, and the connecting rod has a snake-bone structure.

[0017] In one embodiment, the distal end of the passage component is closed and has a rounded corner transition, and the distal end of the passage component is hemispherical, quarter-sphere, pyramidal, cylindrical, conical, or tetrahedral; an operation window is provided in the area of ​​the passage component near the distal end;

[0018] The minimally invasive surgical removal device further includes: a tubular opening and closing component, the outer diameter of which is smaller than the inner diameter of the passage component, and the tubular opening and closing component can move within the passage component to open or close the operating window.

[0019] The retaining clip and the cutter are used to extend into the tubular opening and closing member and protrude from the operating window.

[0020] In one embodiment, a first handle is sleeved on the proximal end or the outer side near the proximal end of the passage member, and a second handle is sleeved on the proximal end or the outer side near the proximal end of the tubular opening and closing member.

[0021] The outer sides of the first handle and the second handle are provided with vertical stripes or embossing;

[0022] One end of the first handle is provided with a socket, and the second handle is slidably inserted into the socket.

[0023] In one embodiment, when the minimally invasive surgical removal device includes a connecting tube, the outer diameter of the connecting tube is smaller than the inner diameter of the tubular opening and closing member. The connecting tube is used to move the fixing clamp and the cutter within the tubular opening and closing member and extend them out of the operating window.

[0024] In one embodiment, the access element has openings at both ends; the minimally invasive surgical removal device further includes a dilator that can be extended into the surgical access and protrude from the distal end of the access element.

[0025] Secondly, this utility model provides a minimally invasive surgical removal system, which may include: a power supply device and a minimally invasive surgical removal device as described in the first aspect; the power supply device is electrically connected to the cutter in the minimally invasive surgical removal device and is used to supply power to the cutter.

[0026] The beneficial effects of the above-mentioned technical solutions provided by the embodiments of this utility model include at least the following:

[0027] This invention provides a minimally invasive surgical removal device and system. The device can remove the valve clip inserted into the mitral valve while the heart is not beating; it can also remove autologous diseased valves while the heart is not beating, assisting in the intervention of artificial bioprosthetic valves; and it can also remove the leaflets of artificial bioprosthetic valves while the heart is not beating, preventing them from obstructing the coronary artery ostia and assisting in the intervention of valve-in-valve. Compared to existing surgical instruments, cutting and removal are performed through the same surgical channel. This reduces surgical risk compared to multiple surgical channels. Furthermore, the use of a fixing clip for both clamping and removal not only securely holds the target object but also avoids the risk of incomplete filtration using a filter, enhancing surgical safety. Thirdly, the coordinated operation of the fixing clip and the cutter improves surgical precision.

[0028] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0029] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0031] Figure 1 This is a schematic diagram of a plaque removal device in the prior art;

[0032] Figure 2 This is a structural diagram of the passage component and the first handle provided in the embodiments of this utility model;

[0033] Figure 3 This is a structural diagram of the extraction device (operation window open state) provided in the embodiment of this utility model;

[0034] Figure 4 This is a structural diagram of the extraction device (operation window closed state) provided in the embodiment of this utility model;

[0035] Figure 5 This is a structural diagram of the tubular opening and closing component and the second handle provided in the embodiments of this utility model;

[0036] Figure 6 This is a structural diagram of the connecting pipe provided in the embodiments of this utility model;

[0037] Figure 7 This is one of the structural diagrams of the fixing clamp, electric coil sleeve, and connecting pipe provided in the embodiments of this utility model;

[0038] Figure 8 This is the second structural diagram of the fixing clamp, electric coil sleeve, and connecting pipe provided in this embodiment of the utility model;

[0039] Figure 9 This is the third structural diagram of the fixing clamp, electric coil sleeve, and connecting pipe (with slide rail) provided in the embodiments of this utility model;

[0040] Figure 10 This is the fourth structural diagram of the fixing clamp, electric coil sleeve, and connecting pipe (with slide rail) provided in the embodiments of this utility model;

[0041] Figure 11 This is a structural diagram of the fixing clip (snake bone structure) provided in the embodiment of this utility model;

[0042] Figure 12 This is a structural diagram of the electric snare (with snake-bone joint) provided in the embodiments of this utility model;

[0043] Figure 13 This is a schematic diagram of the fixing clip structure provided in the embodiment of this utility model;

[0044] Figure 14 This is a structural diagram of the passage component and expander provided in the embodiments of this utility model;

[0045] Figure 15 This is a process diagram of valve clip retrieval via the transapical approach provided in this embodiment of the present invention;

[0046] Figure 16 This is a process diagram of valve clip removal via the interatrial septum provided in an embodiment of the present utility model;

[0047] Figure 17 This is a diagram illustrating the process of valve retrieval via the transapical approach provided in this embodiment of the present invention.

[0048] Figure 18 This is a process diagram of valve retrieval via the interatrial septum provided in an embodiment of this utility model;

[0049] Figure 19 This is a schematic diagram of the minimally invasive surgical removal system provided in the embodiments of this utility model;

[0050] Among them, 1-minimally invasive surgical removal device; 2-target removed object; 3-power supply device;

[0051] 11-Passage component; 12-Fixing clamp; 13-Cutter; 14-Connecting tube; 15-Tube opening and closing component; 16-First handle; 17-Second handle; 18-Expander;

[0052] 111-Surgical access; 112-Operating window; 121-Clamping part; 122-Connecting rod; 123-Drive rod; 124-First connecting rod; 125-Second connecting rod; 131-Shaping collar; 132-Cable; 141-Slide rail; 161-Vertical stripe; 162-Insertion platform;

[0053] 1000 - Plaque resection device; 1001 - Sheath; 1002 - Proximal port; 1003 - Distal port; 1004 - First lumen; 1005 - Second lumen; 1006 - Filter device; 1007 - Plaque; 1008 - Resection catheter; 1009 - Forceps; 1010 - Infusion port; 1011 - Third lumen; 1012 - Brachiocephalic artery; 1013 - Filter screen; 1014 - Hemostatic valve. Detailed Implementation

[0054] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0055] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "far," "near," "front," and "rear," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0057] The existing plaque removal device refers to Figure 1As shown, its working principle is as follows: Existing technology reduces the number of incisions on blood vessels and minimizes space congestion during vascular surgery by intervening in the patient's cardiovascular tissue (e.g., the aorta or atrium). The plaque resection device 1000, formally introduced through the femoral artery, is directly introduced into the aorta or inserted into the cardiovascular tissue through a cannula system, thereby avoiding trauma to peripheral arteries and providing protection against distal embolism. The sheath 1001 of the plaque resection device 1000 has a first lumen 1004 communicating with a proximal port 1002 and a distal port 1003 thereat, and a second lumen 1005 communicating with the proximal port 1002 and the distal port 1003 thereat. A blood filter device 1006 is inserted through the first lumen 1004 to capture embolic (plaque 1007) fragments. A plaque resection catheter 1008 is inserted through a second lumen 1005. The distal region of the plaque resection catheter 1008 includes a plaque resection component (forceps 1009) operable to remove plaque 1007 from cardiovascular tissue. A sheath 1001 includes a third lumen 1011 for arterial perfusion through a perfusion port 1010, a first lumen 1004 for insertion of a blood filter device 1006, and a second lumen 1005 for deployment of the plaque resection catheter 1008. In use, the sheath 1001 is inserted into the ascending aorta upstream of the brachiocephalic artery 1012. A cardiopulmonary bypass is established by attaching the proximal end of the third lumen 1011 to a bypass oxygenator. The filter device 1006 is then inserted through the first lumen 1004 and a filter 1013 to enlarge it to substantially cover the aortic lumen. The sheath 1001 or plaque resection device 1000 is inserted through the second lumen 1005 and the distal port 1003 to remove plaque 1007. Hemostatic valves 1014 included in the first lumen 1004 and the second lumen 1005 prevent blood loss. Embolic material generated during excision and cardiovascular surgery, including calcium, atherosclerotic plaque, myocardial tissue debris, and thrombi, is captured by the filter 1013, thereby preventing distal embolism to the brain and surrounding organs.

[0058] In practical work, the inventors discovered that existing plaque removal devices cannot both capture, cut, and remove valve clips, and capture, cut, and remove leaflets of autologous or artificial bioprosthetic valves. In view of the above-mentioned technical drawbacks, this utility model is proposed to provide a minimally invasive surgical removal device and removal system that overcomes or at least partially solves the above problems.

[0059] This utility model provides a minimally invasive surgical removal device, as described in the following embodiment. Figures 2-5As shown, the minimally invasive surgical removal device 1 may include: a passage 11, a fixing clip 12, and a cutter 13; wherein, the passage 11 is used to establish a surgical passage 111 for surgical operation; the fixing clip 12 and the cutter 13 can be used to extend into the surgical passage 111 and extend from the distal end of the passage 11; the fixing clip 12 is used to fix and clamp the cut target retrieval object 2, and the cutter 13 is used to cut the target retrieval object 2 and remove the cut target retrieval object 2 through the fixing clip 12.

[0060] In this embodiment of the invention, the aforementioned access component 11 is used to establish a surgical access 111 for surgical procedures. In this embodiment, the maximum outer diameter of the access component 11 entering the patient's body is preferably 10-15 mm. The surgical path can be via the apex of the heart, the interatrial septum, the femoral artery, the common carotid artery, the subclavian artery, or others. In this embodiment, the number of cutters 13 is at least one. The cutter 13 can be an electric snare, a high-frequency electrosurgical unit, high-frequency electroscissors, an ultrasonic scalpel, a plasma scalpel, or other instruments capable of cutting valve leaflets. When the number of cutters 13 is two, a combination of an electric snare and a high-frequency electrosurgical unit, or a combination of an electric snare and high-frequency electroscissors, is preferred. In this embodiment, the target object 2 can be a valve clip, an artificial bioprosthetic valve, a diseased valve, etc.

[0061] In this embodiment, the fixing clip 12 is used to fix and hold a valve clip, an autologous valve, or an artificial bioprosthetic valve. The fixing structure can refer to existing technologies, such as existing patent documents CN117462305A and CN219720962U. In a specific example, refer to... Figure 13 As shown, the fixing clamp 12 may include a clamping part 121, a connecting rod 122 connected to the clamping part 121, and a braking member (drive rod 123, first connecting rod 124, and second connecting rod 125) located between the clamping part 121 and the connecting rod 122. One end (i.e., the distal end) of the clamping part 121 connected to the first connecting rod 124 and the second connecting rod 125 may be limited by the end of the passage member 11. In this embodiment, the fixing clamp 12 drives the first connecting rod 124 and the second connecting rod 125 to move via the drive rod 123, so as to achieve the clamping part 121 to fix and clamp the target object 2. Of course, the fixing clamp 12 in the above embodiment of the present invention is not limited to Figure 13 The structure of the fixing clip 12 shown can be modified and transformed by those skilled in the art according to actual needs without departing from the spirit and scope of this utility model. If these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0062] The minimally invasive surgical removal device 1 provided in this embodiment can be used to assist in the first intervention of an artificial bioprosthetic valve, or to assist in the intervention of a valve-in-valve artificial bioprosthetic valve. It can capture, cut, and remove valve clips, especially for capturing, cutting, and removing valve clips at the mitral valve position (such as...). Figure 15 or Figure 16 It can also be used to harvest autologous or artificial bioprosthetic valve leaflets from the mitral, tricuspid, aortic, and pulmonary valves (e.g., ...). Figure 17 or Figure 18 ).

[0063] In this embodiment, the aforementioned clamping clip 12 and cutter 13 can extend into the surgical access 111 and protrude from the distal end of the access component 11 (the external end is the proximal end, and the internal end is the distal end). The clamping clip 12 secures the cut target extractable 2, and the cutter 13 cuts the clamped target extractable 2. Then, the clamping clip 12 removes the cut target extractable 2. The minimally invasive surgical removal device 1 provided in this embodiment can remove the valve clip inserted into the mitral valve while the heart is not beating; it can also remove the autologous diseased valve while the heart is not beating to assist in the intervention of an artificial bioprosthetic valve; it can also remove the leaflet of the artificial bioprosthetic valve while the heart is not beating to prevent it from blocking the coronary artery opening and to assist in the intervention of a valve-in-valve. Compared to existing surgical instruments, cutting and removal are done through the same surgical channel. This reduces surgical risks compared to multiple surgical channels. Furthermore, the clamping and removal by the fixing clamp 12 not only securely holds the target object 2, but also avoids the risk of incomplete filtration by the filter screen, thus enhancing surgical safety. Thirdly, the coordinated operation of the fixing clamp 12 and the cutter 13 improves surgical precision.

[0064] In one embodiment, refer to Figures 2-8 As shown, the aforementioned minimally invasive surgical removal device 1 may further include: a connecting tube 14 that matches the fixation clamp 12 and the cutter 13; the fixation clamp 12, the cutter 13, and the connecting tube 14 are movable relative to each other; the fixation clamp 12 and the cutter 13 can be extended from the distal end of the connecting tube 14; the outer diameter of the connecting tube 14 is smaller than the inner diameter of the passage member 11; the connecting tube 14 is used to drive the fixation clamp 12 and the cutter 13 to move within the passage member 11. In this embodiment, by adding the connecting tube 14 ( Figure 6 This device (showing a structural diagram of connecting tube 14) is particularly... Figure 7 and Figure 8 As can be seen from the detailed arrangement, the connecting pipe 14 serves as a support for the fixing clamp 12 and the cutter 13, with the fixing clamp 12 and the cutter 13 located inside the connecting pipe 14. Figure 7 Rotate 90° to obtain Figure 8The structure, by controlling the relative movement between the connecting pipe 14, the fixing clamp 12 and the cutter 13 (axial movement and rotation do not interfere with each other), allows the fixing clamp 12 and the cutter 13 to extend from the far end of the connecting pipe 14. The connecting pipe 14, as a carrier, can serve as a carrier for the fixing clamp 12 and the cutter, and can also prevent the cutter 13 (the cable of the electric coil) from tangling or moving poorly when the cutter 13 and the fixing clamp 12 move independently due to inconsistent movement trajectories.

[0065] In this embodiment, the fixing clip 12 can be moved into or out of the connecting pipe 14. When the fixing clip 12 is inside the connecting pipe 14, the clamped fixing clip 12 can freely pass through the connecting pipe 14. When the fixing clip 12 is outside the connecting pipe 14, the clamped fixing clip 12 can freely pass through the passage member 11 and the tubular opening and closing member 15 described below.

[0066] In another embodiment, refer to Figures 2 to 12 As shown, the cutter 13 is an electric coil sleeve; the electric coil sleeve and the fixing clamp 12 are movably inserted through the connecting tube 14 and extend from the distal end of the connecting tube 14; the fixing clamp 12 includes a clamping part 121, the electric coil sleeve includes a shaping collar 131 and two cables 132 connected to the shaping collar 131, the shaping collar 131 is made of shape memory material; the shaping collar 131 is sleeved on the outside of the clamping part 121, and the two cables 132 extend from the proximal end of the connecting tube 14; the clamping part 121 is connected to the distal end of the connecting tube 14.

[0067] In this embodiment, the cutter 13 is an electric snare. Firstly, the electric snare can simultaneously cut and coagulate tissue, resulting in less bleeding during surgery. Its hemostatic properties help shorten the operation time and reduce patient trauma and stress, aligning with the characteristics of minimally invasive surgery: small trauma and rapid recovery. Secondly, wound healing is faster due to less bleeding, reducing the risk of infection and accelerating healing. Thirdly, it has high precision in conjunction with the fixing clamp 12. After the fixing clamp 12 holds the target object 2, the electric snare completely encircles it before cutting, improving the precision of the minimally invasive surgery. In this embodiment, the electric snare includes a central shaping ring 131. This shaping ring 131 can be made of shape memory material to aid cutting. In specific implementations, the shaping ring 131 can be elliptical, rhomboid, square, or crescent-shaped, etc., and this embodiment does not impose specific limitations on this. Preferably, in this embodiment, the width of the shaping ring 131 along the axial direction of the extraction device ranges from 5 to 30 mm. It should also be noted that the core of the electric snare is made of steel wire, which facilitates conductivity and provides strong tension, resulting in a better "tightening and cutting" effect. The larger the contact area of ​​the electric snare when energized, the better and more stable the cutting effect. To achieve an "anti-slip" effect, the steel wire of the electric snare is spirally braided, like a "ponytail," so that the contact area between the electric snare and the target material 2 (e.g., a valve) is large enough while also preventing the valve from slipping out.

[0068] In this embodiment, the connection method between the clamping part 121 in the fixing clamp 12 and the connecting tube 14 can refer to the connection method disclosed in the prior art, such as CN219720962U, specifically as follows: Figure 13 As shown, the hinge (hinged member) on the clamping part 121 can be limited to the distal end of the connecting tube 14, or can be slidably connected to the distal end of the connecting tube 14. In this embodiment, the electric ring sleeve and the clamping part 121 of the fixing clamp 12 are used in cooperation with each other. By fitting the shaping ring 131 on the outside of the clamping part 121, after the clamping part 121 fixes the target object 2, the clamping part 121 is slightly tightened, and then the shaping ring 131 is pulled back to fit the target object 2. Finally, the electric cutting is applied to accurately cut off the target object 2.

[0069] In another embodiment, refer to Figures 9-10As shown, the cutter 13 is an electric coil catcher; the fixing clamp 12 is movably inserted through the connecting tube 14 and extends from the distal end of the connecting tube 14; a slide rail 141 is provided on the outside of the connecting tube 14, and the electric coil catcher can slide on the slide rail 141; the fixing clamp 12 includes a clamping part 121, and the electric coil catcher includes a shaping collar 131 and two cables 132 connected to the shaping collar 131. The shaping collar 131 is made of shape memory material; the shaping collar 131 is fitted on the outside of the clamping part 121, and the two cables 132 extend from the proximal end of the connecting tube 14; the clamping part 121 is connected to the distal end of the connecting tube 14. The difference between this embodiment and the above embodiment is that in the above embodiment, the electric coil catcher moves inside the hollow connecting tube 14. In this embodiment, by providing a slide rail 141 on the outside of the connecting tube 14, the electric coil catcher slides on the slide rail 141, thus saving the space inside the connecting tube 14 and allowing the fixing clamp 12 to move flexibly.

[0070] In another embodiment, refer to Figure 11 and Figure 12 As shown, the cutter 13 is an electric snare, which may include a shaped collar 131 and two cables 132 connected to the shaped collar 131; the fixing clamp 12 may include a clamping part 121 and a connecting rod 122 connected to the clamping part 121; the shaped collar 131 is sleeved on the outside of the clamping part 121; the cable 132 is sleeved with a snake-bone joint on the outside, and the connecting rod 122 has a snake-bone structure. In this embodiment, by designing a connecting tube 14 with a snake-bone structure and a snake-bone joint on the outside of the cable 132, it is easier to adjust the bending angle of the fixing clamp 12 and the electric snare during use, making it suitable for various surgical scenarios.

[0071] In this embodiment, the access component 11 establishes a surgical access 111. In specific implementation, the access component 11 can have two structures: one where the ends of the access component 11 are closed, requiring an operation window 112 (which can be opened and closed) to be provided on the access component 11; the other structure where both ends of the access component 11 are open. To avoid damage to the patient's tissues during the delivery process, an expander 18 is required. The two structures are described in detail below:

[0072] In another embodiment, refer to Figures 2-4As shown, the distal end of the passage component 11 is closed and has a rounded corner transition. The distal end of the passage component 11 is hemispherical, quarter-sphere, pyramidal, cylindrical, conical, or tetrahedral. An operating window 112 is provided in the region near the distal end of the passage component 11. The minimally invasive surgical removal device 1 may also include: a tubular opening and closing component 15, the outer diameter of which is smaller than the inner diameter of the passage component 11. The tubular opening and closing component 15 can move within the passage component 11 to open or close the operating window 112. A fixing clip 12 and a cutter 13 are used to extend into the tubular opening and closing component 15 and protrude from the operating window 112.

[0073] In this embodiment, the distal end of the passage component 11 is closed, thus reducing tissue damage during delivery to the patient. To facilitate the output of the clamping part 121 of the fixing clamp 12 and the cutter 13 from the passage component 11, an operating window 112 is provided on the side of the passage component 11. In specific implementations, the operating window 112 can occupy more than 2 / 3 of the circumference of the entire passage component 11, providing sufficient operating space. Simultaneously, the operating window 112 also facilitates the retrieval of the clamping part 121 and the electric snare. In this embodiment, the opening and closing of the operating window 112 is controlled by a tubular opening and closing component 15 that matches the opening and closing mechanism. The operating window 112 is closed by the tubular opening and closing component 15 during delivery to the patient and opened by the tubular opening and closing component 15 during surgery. It should also be noted that the distal side of the tubular opening and closing component 15 can be shaped to match the shape of the operating window 112, or it can be directly tubular to completely close the operating window 112.

[0074] In another embodiment, refer to Figures 2-5 As shown, a first handle 16 is sleeved on the proximal end or the outer side near the proximal end of the passage component 11, and a second handle 17 is sleeved on the proximal end or the outer side near the proximal end of the tubular opening and closing component 15; the outer sides of the first handle 16 and the second handle 17 are provided with vertical stripes 161 or embossing; one end of the first handle 16 is provided with a socket 162, and the second handle 17 is slidably inserted into the socket 162.

[0075] In this embodiment, the tubular opening / closing component 15 and the passage component 11 form an extraction channel. The first handle 16 and / or the second handle 17 can be cylindrical, pear-shaped, or polyhedral. The first handle 16 and the passage component 11, or the second handle 17 and the tubular opening / closing component 15, can be detachably connected (e.g., threaded connection) or integrally connected; this embodiment does not specifically limit this. In this embodiment, the outer sides of the first handle 16 and the second handle 17 are provided with vertical stripes 161 or embossing, which increases the friction between the operator and the handle, facilitating operation. At the same time, one end of the first handle 16 is provided with a insertion platform 162, so that the second handle 17 can be slidably inserted into the insertion platform 162. After the second handle 17 is fully inserted into the insertion platform 162, the first handle 16 and the second handle 17 abut against each other, thus fixing the position between the tubular opening / closing component 15 and the passage component 11. Preferably, the second handle 17 and the insertion platform 162 can be threaded together, which can stably control the first handle 16 and the second handle 17 to move closer or further apart, and stably control the relative movement distance between the tubular opening and closing part 15 and the passage part 11.

[0076] More preferably, the length of the operating window 112 along the axis of the passage member 11 is less than the length of the insertion platform 162 along the axis of the passage member 11. When the operator moves the first handle 16 and the second handle 17 away, the retaining clip 12 and the cutter 13 can be exposed from the operating window 112. At this time, the second handle 17 can still be located on the insertion platform 162, which helps the operator to control the movement of the second handle 17 stably and conveniently.

[0077] In another embodiment, refer to Figure 3 As shown, in the state where the minimally invasive surgical removal device 1 includes the connecting tube 14, the outer diameter of the connecting tube 14 is smaller than the inner diameter of the tubular opening and closing member 15. The connecting tube 14 is used to drive the fixing clamp 12 and the cutter 13 to move within the tubular opening and closing member 15 and extend out of the operating window 112. In this embodiment, the connecting tube 14, the tubular opening and closing member 15, and the passage member 11 are sequentially sleeved from the inside to the outside. In specific implementation, the outer diameters of the connecting tube 14, the tubular opening and closing member 15, and the passage member 11 can be increased sequentially by a range of 0.2 to 1.5 mm. The axes of the connecting tube 14, the tubular opening and closing member 15, and the passage member 11 are parallel, that is, coaxially sleeved. All three can move relative to each other along the axial direction and can rotate freely around the circumference.

[0078] In another embodiment, refer to Figure 14As shown, the passage component 11 has openings at both ends; the minimally invasive surgical removal device 1 also includes an expander 18, which can be extended into the surgical passage 111 and protrude from the distal end of the passage component 11. In this embodiment, the expander 18 may include components such as an expansion head, a connecting rod 122, and a drive core. The expansion head can be opened and closed by the drive core. During the opening process, it is inserted into the body to facilitate the establishment of the surgical passage 111 after being inserted into the passage component 11. After closing, the expander 18 can be removed through the passage component 11, and then the fixing clamp 12 and the cutter 13 are lowered to perform the surgical operation.

[0079] This embodiment describes two minimally invasive off-pump surgical procedures for different target retrieval items 2. The target retrieval item 2 is illustrated using valve clips and autologous / artificial bioprosthetic valves as examples.

[0080] Reference Figure 15 and Figure 16 As shown, Figure 15 This illustrates the procedure of retrieving the valve clip via the transapical approach. Figure 16 The procedure for removing valve clips via the interatrial septum is illustrated. Figure 15 Taking the transapical approach as an example, the distal end of the tubular opening / closing element 15 closes the operating window 112, and the distal end of the access element 11 establishes the surgical access 111 after being inserted into the patient's body. The operator controls the movement of the second handle 17, and the distal end of the tubular opening / closing element 15 moves relative to the access element 11, exposing the operating window 112. Subsequently, the connecting tube 14 and the fixing clamp 12 are controlled to move the clamping part 121 of the fixing clamp 12 to the operating window 112, and then the clamping part 121 is controlled to extend out of the operating window 112 to fix the jumping valve clip (target extract 2). When the cutter 13 is an electric snare, the shaping ring 131 of the electric snare is fixed on the clamping part 121. Since the clamping part 121 fixes the valve clip (the clamping part 121 plays a fixing and supporting role), at this time, retracting the clamping part 121 and shrinking the shaping ring 131 can make the shaping ring 131 cover the cut valve clip. The cutter 13 is energized to cut and sever the valves surrounding the valve clip, pulling the connecting tube 14 and the fixing clamp 12 into the removal channel of the tubular opening and closing device 15 to remove the valve clip. When the cutter 13 is a high-frequency electrosurgical knife, high-frequency electric scissors, ultrasonic scalpel, plasma scalpel, or other instruments capable of cutting valve leaflets, the cutter 13 can be directly controlled to cut and sever the valves surrounding the valve clip.

[0081] Reference Figure 17 and Figure 18 As shown, Figure 17 This illustrates the procedure of harvesting the valve via the transapical approach. Figure 18 This illustrates the procedure of harvesting a valve via the interatrial septum. Figure 17Taking the transapical approach as an example, the distal end of the tubular opening / closing element 15 closes the operating window 112, and the distal end of the access element 11 establishes the surgical access 111 after being inserted into the patient's body. The operator controls the movement of the second handle 17, and the distal end of the tubular opening / closing element 15 moves relative to the access element 11, exposing the operating window 112. Subsequently, the connecting tube 14 and the fixing clamp 12 are controlled to move the clamping part 121 of the fixing clamp 12 to the operating window 112, and then the clamping part 121 is controlled to extend out of the operating window 112 to fix the beating autologous valve or artificial bioprosthetic valve (target extract 2). When the cutter 13 is an electric snare, the shaping ring 131 of the electric snare is fixed on the clamping part 121. Since the clamping part 121 fixes the valve, retracting the clamping part 121 and shrinking the shaping ring 131 can make the shaping ring 131 cover the cut valve. The cutter 13 is energized to cut and sever the valve, pulling the connecting tube 14 and the fixing clamp 12 into the removal channel of the tubular opening and closing device 15 to remove the valve. When the cutter 13 is a high-frequency electrosurgical knife, high-frequency electric scissors, ultrasonic scalpel, plasma scalpel, or other instruments that can be used to cut the valve leaflets, the cutter 13 can be directly controlled to cut and sever the valve.

[0082] Based on the same inventive concept, this utility model also provides a minimally invasive surgical removal system, referring to... Figure 19 As shown, the extraction system includes a power supply device 3 and the aforementioned minimally invasive surgical extraction device 1; the power supply device 3 is electrically connected to the cutter 13 in the minimally invasive surgical extraction device 1 and is used to supply power to the cutter 13.

[0083] The beneficial effects and specific implementation process of the minimally invasive surgical removal system provided in this embodiment can be referred to the relevant introduction of the removal device, and will not be repeated here.

[0084] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. This disclosure is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims. Thus, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model is also intended to include these modifications and variations.

Claims

1. A minimally invasive surgical removal device, characterized in that, include: Access components, clamps, and cutters; wherein the access components are used to establish a surgical access for surgical procedures; The clamp and the cutter can be extended into the surgical access and protrude from the distal end of the access member; the clamp is used to hold the cut target extractor in place, and the cutter is used to cut the target extractor and remove the cut target extractor through the clamp.

2. The minimally invasive surgical retrieval device according to claim 1, wherein, Also includes: A connecting tube that mates with the retaining clamp and the cutter, wherein the retaining clamp, the cutter and the connecting tube are movable relative to each other, and the retaining clamp and the cutter can be extended from the distal end of the connecting tube; The outer diameter of the connecting pipe is smaller than the inner diameter of the passage component, and the connecting pipe is used to drive the fixing clamp and the cutter to move within the passage component.

3. The minimally invasive surgical retrieval device according to claim 2, wherein, The cutter is an electric coil cutter; the electric coil cutter and the fixing clamp are movably inserted through the connecting tube and extend from the distal end of the connecting tube; The fixing clamp includes a clamping part, and the electric coil includes a shaping collar and two cables connected to the shaping collar. The shaping collar is made of shape memory material. The shaping collar is sleeved on the outside of the clamping part, and the two cables extend from the proximal end of the connecting tube. The clamping part is connected to the distal end of the connecting tube.

4. The minimally invasive surgical retrieval device according to claim 2, wherein, The cutter is an electric coil cutter; the fixing clamp is movably inserted through the connecting tube and extends from the distal end of the connecting tube; A slide rail is provided on the outside of the connecting tube, and the electric coil holder can slide on the slide rail; the fixing clamp includes a clamping part, and the electric coil holder includes a shaping collar and two cables connected to the shaping collar. The shaping collar is made of shape memory material; the shaping collar is sleeved on the outside of the clamping part, and the two cables extend out of the proximal end of the connecting tube; the clamping part is connected to the distal end of the connecting tube.

5. The minimally invasive surgical retrieval device according to claim 1, wherein, The cutter is an electric coil catcher, which includes a shaped coil and two cables connected to the shaped coil; the fixing clamp includes a clamping part and a connecting rod connected to the clamping part; the shaped coil is sleeved on the outside of the clamping part; The cable is fitted with a snake-bone joint on the outside, and the connecting rod has a snake-bone structure.

6. The minimally invasive surgical retrieval device according to any one of claims 1-5, wherein, The distal end of the passage component is closed and has rounded corners. The distal end of the passage component is hemispherical, quarter-sphere, pyramidal, cylindrical, conical, or tetrahedral. An operation window is provided in the area near the distal end of the passage component. The minimally invasive surgical removal device further includes: a tubular opening and closing component, the outer diameter of which is smaller than the inner diameter of the passage component, and the tubular opening and closing component can move within the passage component to open or close the operating window. The retaining clip and the cutter are used to extend into the tubular opening and closing member and protrude from the operating window.

7. The minimally invasive surgical retrieval device according to claim 6, wherein, A first handle is sleeved on the proximal end or the outer side near the proximal end of the passage component, and a second handle is sleeved on the proximal end or the outer side near the proximal end of the tubular opening and closing component. The outer sides of the first handle and the second handle are provided with vertical stripes or embossing; One end of the first handle is provided with a socket, and the second handle is slidably inserted into the socket.

8. The minimally invasive surgical retrieval device according to claim 6, wherein, When the minimally invasive surgical removal device includes a connecting tube, the outer diameter of the connecting tube is smaller than the inner diameter of the tubular opening and closing member. The connecting tube is used to drive the fixing clamp and the cutter to move within the tubular opening and closing member and extend out of the operating window.

9. The minimally invasive surgical removal device according to any one of claims 1 to 5, characterized in that, The access component has openings at both ends; the minimally invasive surgical removal device also includes an expander that can be extended into the surgical access and protrude from the distal end of the access component.

10. A minimally invasive surgical retrieval system, comprising: include: The power supply device and the minimally invasive surgical removal device as described in any one of claims 1 to 9; the power supply device is electrically connected to the cutter in the minimally invasive surgical removal device and is used to supply power to the cutter.

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