Action assembly, action device, pericardial lifting device and operation method

Abstract

The present application discloses an action component, an action device, a pericardium lifting device and an operation method. The action component includes a fixed tube, an operation sleeve and a constraint structure. The fixed tube has a relatively distal end and a proximal end. The operation sleeve is connected to the proximal end of the fixed tube. The side wall of the operation sleeve is provided with an operation channel, and the operation channel is used to receive and guide the pericardium lifting device. The constraint structure is arranged at a predetermined position of the operation channel to keep the pericardium lifting device at the current position. Compared with the prior art, the operation channel on the operation sleeve adjusts the movement trajectory of the pericardium lifting device so as to stably realize the operation of the pericardium and avoid damage to the surrounding tissues such as the myocardium.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and specifically to an action component, an action device, a pericardium lifting device, and an operation method. Background Art

[0002] The heart consists of ventricles, myocardium and pericardium. The ventricles are surrounded by the myocardium, which is wrapped by the pericardium. The myocardium includes a fibrous layer, a parietal layer and a visceral layer from the outside to the inside. The visceral layer is also called the epicardium. There is a pericardial cavity between the epicardium and the parietal layer, which usually contains 20-25 ml of physiological fluid.

[0003] The current epicardial stem cell injection technology includes open-chest surgery, which has the disadvantages of large trauma and slow recovery. Therefore, minimally invasive surgery to enter the pericardium and inject stem cells has become a preferred treatment method.

[0004] The medical device used in minimally invasive surgery is a pericardial puncture device. After the tissue engaging needle on the pericardial puncture device cuts open the pericardium, the medical device enters the pericardial cavity along the pericardial puncture device, so that medical personnel can perform a medical operation of injecting stem cells in the pericardial cavity.

[0005] Of course, the medical procedures after opening the pericardium with a pericardiocentesis device are not limited to the injection of stem cells, but also include puncture and drainage, myocardial resection, ablation, biological patch placement, left atrial appendage ligation and pacemaker placement.

[0006] The inventors have found that the pericardial puncture device in the prior art is unreliable in lifting the pericardium during use. Summary of the invention

[0007] In order to solve the above technical problems, the present application discloses an action component based on a pericardium lifter, comprising:

[0008] a fixed tube having opposing distal and proximal ends;

[0009] An operation sleeve connected to the proximal end of the fixing tube, wherein a side wall of the operation sleeve is provided with an operation channel, and the operation channel is used to receive and guide the pericardium lifting device;

[0010] A restraining structure is arranged at a predetermined position of the operation channel and is used to keep the pericardium lifting device at a current position.

[0011] The operating channel on the operating sleeve adjusts the moving trajectory of the pericardium lifter so as to stably operate the pericardium and avoid damage to the myocardium and other surrounding tissues.

[0012] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0013] Optionally, both ends of the operation channel have an inlet and an outlet located at the proximal end of the operation sleeve;

[0014] The operation channel comprises:

[0015] The first section has an extension direction at least having a direction vector along the axial direction of the operation sleeve, and the proximal end of the first section is connected to the inlet;

[0016] The second section has an extension direction having at least a direction vector along the circumference of the operation sleeve, and has a first end and a second end opposite to each other, and the first end of the second section is connected to the distal end of the first section;

[0017] The third section has an extension direction that at least has a direction vector along the axial direction of the operation sleeve. The distal end of the third section is connected to the second end of the second section, and the proximal end is connected to the outlet.

[0018] The pericardium lifting device can stably operate the pericardium and avoid damage to the myocardium and other surrounding tissues.

[0019] Optionally, along the circumference of the operation sleeve, the second section includes a first unit area and a second unit area, the first unit area is connected to the first section, and the second unit area is connected to the third section;

[0020] The first unit area and the second unit area are transitionally connected via a first step.

[0021] The first unit area is the preparation position before the pericardium lifter is rotated. At this time, the operator can release the pericardium lifter and adjust the hand posture.

[0022] Optionally, the junction between the second section and the third section is connected via a docking interface;

[0023] A partial structure of the second section passes over the docking port, and the partial structure is provided with a second step for maintaining the position of the pericardium lifting device.

[0024] The pericardium lifting device can be kept at the current position by the second step, and the pericardium lifting device can be operated at this time.

[0025] Optionally, the third section turns along the axial direction of the operating sleeve to form a third unit area and a fourth unit area, and a third step is provided at the turning point.

[0026] The third step can also keep the pericardium elevator in the current position, and the pericardium elevator can be operated at this time.

[0027] Optionally, the constraint structure is formed by a side wall of the operating channel.

[0028] The processing difficulty of the constraint structure is reduced, and the structural strength between the constraint structure and the operating sleeve is increased.

[0029] Optionally, the action assembly further comprises a force-applying component acting between the operation sleeve and the pericardium lifting device, wherein the force-applying component provides a force to the pericardium lifting device along the axial direction of the operation sleeve and separates from the operation sleeve.

[0030] Under the action of the force-applying component, the pericardium lifting device abuts against the side wall of the distal end of the operation channel.

[0031] Optionally, the outer side wall of the fixed tube is provided with a spiral portion;

[0032] The tube wall at the distal end of the fixed tube has a plurality of grooves with distal ends opened, and the plurality of grooves are sequentially spaced and arranged along the circumference of the tube body.

[0033] The spiral portion can increase the friction between the fixing tube and the skin and muscles so as to anchor the fixing tube in the skin and muscles, and the groove can serve to accommodate the pericardium.

[0034] The present application also provides an action device, comprising:

[0035] The action components described in this application;

[0036] The expansion sheath is movably arranged in the fixing tube, the distal end of the expansion sheath is exposed to the distal end of the fixing tube, and the proximal end has a limiting portion that abuts against the proximal end of the operation sleeve.

[0037] The expansion sheath can close the distal opening of the fixation tube, and the fixation tube is inserted into the skin and muscle along with the distal end of the expansion sheath to enable the fixation tube to establish a channel in the chest cavity.

[0038] The present application also provides a pericardial lifting device, comprising:

[0039] The pericardium lifter described in this application;

[0040] The action component is used to receive and guide the pericardium lifting device.

[0041] The present application also provides an operation method of a pericardial lifting device, comprising:

[0042] S100, pushing the action component until the distal end of the fixing tube approaches the target area;

[0043] S200, under the guidance of the operation channel, push the pericardium lifter in the inner cavity of the operation sleeve until the distal end of the pericardium lifter passes through the distal end of the fixing tube;

[0044] S300, operating the pericardium lifting device so that the distal end of the pericardium lifting device acts on the target area, wherein when operating the pericardium lifting device, the relative position with respect to the action component is limited by the constraint structure.

[0045] The operating sleeve can guide the movement of the pericardium lifting device so as to stably implement various steps of the pericardium lifting device.

[0046] Optionally, the method for operating the pericardial lifting device further includes:

[0047] S400, operating the pericardial lifting device to release the target area at the distal end of the pericardial lifting device;

[0048] S500, reclaim the pericardium lifter and action assembly.

[0049] Optionally, the pericardium lifting device comprises a first tube member and a second tube member that are movably sleeved, and the tube wall at the distal end of each tube member is provided with at least one anchor barb;

[0050] In step S300, operating the pericardium lifting device includes:

[0051] S310, rotating the first pipe member to put the anchor barb at the distal end of the first pipe member into position;

[0052] S320, pushing the second pipe member along the axial direction of the first pipe member so that the anchor barb at the distal end of the second pipe member approaches the target area;

[0053] S330, rotating the second pipe fitting so that the anchor barbs at the far end of the second pipe fitting are in place, and the anchor barbs in place on each pipe fitting cooperate with each other to form a clamping posture;

[0054] S340, synchronously pull the two pipes to the expected extent.

[0055] The anchor barbs of each pipe fitting clamp the target area so that the two pipe fittings can stably pull the target area.

[0056] Optionally, the constraint structure is arranged on the inner wall of the operation channel;

[0057] In step S310, when the first pipe member is rotated until the anchor barb at the distal end is in place, the constraint structure restricts the guide member;

[0058] In step S340, when the two pipes are synchronously pulled to a desired extent, the constraint structure restricts the guide member.

[0059] The action component, action device, pericardium lifting device and operation method thereof guide the pericardium lifting device through the operation channel on the operation sleeve so as to stably realize the operation on the pericardium. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 A schematic diagram of the structure of a pericardial intervention system according to an embodiment of the present application;

[0061] Figure 2 A schematic diagram of the structure of a pericardial intervention system according to an embodiment of the present application;

[0062] Figure 3 for Figure 1 A schematic diagram of the structure of the center bag lifting device;

[0063] Figure 4 for Figure 3 The structural diagram of each pipe fitting;

[0064] Figure 5 for Figure 4 A schematic diagram of the partial structure of the middle inner tube;

[0065] Figure 6 for Figure 4 Schematic diagram of the partial structure of the middle and outer tubes;

[0066] Figure 7 for Figure 3 The structural schematic diagram of the two pipes in the middle is in the initial state;

[0067] Figure 8 for Figure 3 The structural schematic diagram of the two pipes in the middle is in working state;

[0068] Fig. 9 for Figure 3 A cross-sectional view of the center bag lifter;

[0069] Fig.10 for Figure 3 A schematic diagram of the structure of the center bag lifter omitting the rotating handle;

[0070] Fig.11 for Figure 3 Schematic diagram of the structural breakdown of the center bag lifter;

[0071] Fig.12 for Figure 1 Schematic diagram of the structure of the action component;

[0072] Fig.13 for Fig.12 Schematic diagram of the local structure of the action component;

[0073] Fig.14 for Fig.13Schematic diagram of the local structure of the action component;

[0074] Fig.15 A schematic diagram of the structure of an action device according to an embodiment of the present application;

[0075] Fig.16 for Fig.15 Schematic diagram of the structural breakdown of the middle action device;

[0076] Fig.17 for Figure 1 A schematic diagram of the structure of a pericardial puncture device;

[0077] Fig.18 for Fig.17 A schematic diagram of the structure of the middle guide tube and the puncture member;

[0078] Fig.19 for Fig.18 Schematic diagram of the exploded structure of the middle guide tube and the puncture piece;

[0079] Fig. 20 for Fig.18 a cross-sectional view of the middle guide tube;

[0080] Fig.21 This is a system block diagram of an operating method of a pericardial lifting device according to an embodiment of the present application.

[0081] The reference numerals in the figures are described as follows:

[0082] 100. Pericardial intervention system; 101. Distal end; 102. Proximal end;

[0083] 10. pericardial lifting device; 11. pipe fitting; 111. outer tube; 112. inner tube; 113. viewing window; 12. anchor thorn; 1211. first anchor thorn; 1212. second anchor thorn; 121. receiving cavity; 122. receiving area; 123. guiding slope; 124. cutting edge; 125. opening part; 126. gathering area; 13. driving handle; 131. supporting body; 1311. spiral groove; 1312. mounting groove; 13 13. partition; 132. spiral drive mechanism; 1321. transmission member; 1322. rotating handle; 1323. limit groove; 1324. pin shaft; 1325. mounting hole; 134. sleeve; 1341. first part; 1342. second part; 1343. outer flange; 135. elastic member; 136. reduced diameter part; 137. operating handle; 138. rear end plug; 139. front end plug; 14. guide member;

[0084] 20. pericardial puncture device; 21. puncture member; 211. driving section; 212. puncture section; 213. sharp portion; 22. driving structure; 221. stopper; 222. notch; 223. strip hole; 23. guide tube; 231. channel; 232. joint;

[0085] 30. Action device; 31. Action assembly; 32. Fixed tube; 321. Spiral portion; 322. Groove; 33. Operation sleeve; 331. Flange; 34. Operation channel; 341. Inlet; 342. Outlet; 343. First section; 344. Second section; 3441. First unit area; 3442. Second unit area; 345. Third section; 3451. Third unit area; 3452. Fourth unit area; 3453. Docking port; 35. Constraint structure; 351. First step; 352. Second step; 353. Third step; 36. Expansion sheath; 361. Limiting portion. DETAILED DESCRIPTION

[0086] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0087] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component at the same time.

[0088] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0089] In this application, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number or order of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0090] like Figure 1 , Figure 2 and Figure 12 to Figure 14 As shown, the present application provides an action component 31 based on the pericardium lifting device 10. In this embodiment, the action component 31 includes:

[0091] a fixed tube 32 having opposite distal and proximal ends;

[0092] An operating sleeve 33 is connected to the proximal end of the fixing tube 32. An operating channel 34 is formed on the side wall of the operating sleeve 33. The operating channel 34 is used to receive and guide the pericardium lifting device 10.

[0093] The restraining structure 35 is disposed at a predetermined position of the operating channel 34 and is used to keep the pericardium lifting device 10 at a current position.

[0094] Unless otherwise specified, the “distal end 101 ” in this embodiment and the following embodiments refers to the end close to the lesion, that is, away from the operator, and the “proximal end 102 ” refers to the opposite.

[0095] The fixing tube 32 can be anchored to tissue (such as the skin and muscles outside the chest cavity), and the fixing tube 32 fixes the entire action component 31. The pericardium lifting device 10 passes through the operation sleeve 33 and the fixing tube 32 to reach the pericardium position. When the pericardium lifting device 10 performs actions such as piercing the pericardium and lifting the pericardium, the movement trajectory of the pericardium lifting device 10 is adjusted through the operation channel 34 on the operation sleeve 33, so as to stably realize the operation of the pericardium and avoid damage to surrounding tissues such as the myocardium.

[0096] The restraint structure 35 can achieve a relative fixed position between the pericardium lifting device 10 and the operating sleeve 33 , and the operator can also adjust the hand posture to reduce the difficulty of the operator's hand operation, while avoiding the operator needing an extra hand to fix the pericardium lifting device 10 and the operating sleeve 33 .

[0097] The fixing tube 32 and the operating sleeve 33 both have an axis in space, and the axis of the fixing tube 32 is substantially parallel to the axis of the operating sleeve 33. In this embodiment, the axis of the fixing tube 32 coincides with the axis of the operating sleeve 33.

[0098] The operating sleeve 33 is roughly cylindrical, with one axial end of the operating sleeve 33 being a closed end and the other end being an open end. The open end of the operating sleeve 33 is used for allowing the pericardium lifting device 10 to enter, and the closed end of the operating sleeve 33 is connected to the proximal end of the fixed tube 32, and the connection between the operating sleeve 33 and the fixed tube 32 is communicated.

[0099] The constraint structure 35 is mainly used to limit the relative position between the pericardium lifting device 10 and the action sleeve, so there is no strict restriction on the shape and specific structure of the constraint structure 35. The constraint structure 35 can be an additional component or a part of the operation sleeve 33, for example, it can be a bolt or a slot, etc. The general principle is that it should have at least sufficient mechanical strength to ensure the firmness of the pericardium lifting device 10 and the action sleeve when fixed.

[0100] In order to reduce the difficulty of processing the constraint structure 35 and increase the structural strength between the constraint structure 35 and the operating sleeve 33 , referring to one embodiment, the constraint structure 35 is formed by the side wall of the operating channel 34 .

[0101] Regarding the specific configuration of the operating channel 34, refer to one embodiment, as shown in FIG. Figure 12 to Figure 14 As shown, the two ends of the operating channel 34 have an inlet 341 and an outlet 342 located at the proximal end of the operating sleeve 33;

[0102] The operating channel 34 includes:

[0103] The first section 343 extends in a direction at least having a direction vector along the axial direction of the operation sleeve 33 , and the proximal end of the first section 343 is connected to the inlet 341 ;

[0104] The second section 344 extends in a direction at least along the circumferential direction of the operation sleeve 33 and has a first end and a second end opposite to each other, and the first end of the second section 344 is connected to the distal end of the first section 343;

[0105] The third section 345 extends in a direction that has at least a direction vector along the axial direction of the operation sleeve 33 . The distal end of the third section 345 is connected to the second end of the second section 344 , and the proximal end is connected to the outlet 342 .

[0106] In the specific configuration of the operating channel 34 , the first section 343 extends along the axial direction of the operating sleeve 33 , the second section 344 extends along the circumferential direction of the operating sleeve 33 , and the third section 345 extends along the axial direction of the operating sleeve 33 .

[0107] The first section 343 of the operating channel 34 can limit the length of the anchor barb 12 on the pipe 11 extending out of the fixing tube 32, the second section 344 of the operating channel 34 can limit the number of turns of the pericardium wrapped around the pipe 11, and the third unit area 3451 of the third section 345 of the operating channel 34 can limit the distance the pericardium is lifted by the pericardium lifting device 10.

[0108] In this embodiment, if Fig.13 As shown, along the circumference of the operating sleeve 33, the second section 344 includes a first unit area 3441 and a second unit area 3442, the first unit area 3441 is connected to the first section 343, and the second unit area 3442 is connected to the third section 345;

[0109] The first unit area 3441 and the second unit area 3442 are transitionally connected via a first step 351 .

[0110] The pericardium lifting device 10 enters the first unit area 3441 from the first section 343 . The first unit area 3441 is a preparation position before the pericardium lifting device 10 rotates. At this time, the operator can release the pericardium lifting device 10 and adjust the hand posture. In this embodiment, the restraint structure 35 includes a first step 351 .

[0111] In this embodiment, if Fig.14 As shown, the junction of the second section 344 and the third section 345 is connected via a docking port 3453;

[0112] A portion of the structure of the second section 344 passes over the docking port 3453 , and the portion of the structure is provided with a second step 352 for maintaining the position of the pericardium lifting device 10 .

[0113] When the pericardium lifting device 10 rotates to the second end of the second section 344, the second step 352 prevents the inner tube 112 from axially rotating relative to the operation sleeve 33 by keeping the guide member 14 of the pericardium lifting device 10 at the current position. At this time, the distal end of the pericardium lifting device 10 is located outside the fixing tube 32, and the pericardium lifting device 10 can lift the pericardium. In this embodiment, the restraint structure 35 includes the second step 352.

[0114] In this embodiment, if Fig.14 As shown, the third section 345 is turned along the axial direction of the operating sleeve 33 to form a third unit area 3451 and a fourth unit area 3452, and a third step 353 is provided at the turning point.

[0115] The third step 353 can also maintain the pericardium lifter 10 at the current position. The third step 353 can limit the lifting amplitude of the pericardium and can also release the clamping of the pericardium at this point. In this embodiment, the constraint structure 35 includes the third step 353.

[0116] In this embodiment, the action assembly 31 further includes a force-applying component acting between the operation sleeve 33 and the pericardium lifting device 10 , and the force-applying component provides a force to the pericardium lifting device 10 along the axial direction of the operation sleeve 33 and separates from the operation sleeve 33 .

[0117] Under the action of the force-applying component, when there is no external force acting between the pericardium lifting device 10 and the action assembly 31 , the pericardium lifting device 10 abuts against the side wall of the distal end of the operation channel 34 .

[0118] The force-applying component can be a part of the operating sleeve 33 or the pericardium lifting device 10, or can be an independent component. The force-applying component is mainly used to drive the pericardium lifting device 10 to move axially along the operating sleeve 33. In order to achieve its basic function, a cylinder or an elastic member 135 can be selected in the prior art. In this embodiment, the force-applying component is an elastic member 135.

[0119] In this embodiment, if Fig.12 As shown, the outer wall of the fixing tube 32 is provided with a spiral portion 321 .

[0120] The spiral portion 321 can increase the friction between the fixing tube 32 and the human tissue, so as to fix the fixing tube 32 to the human tissue. The spiral portion 321 is an external thread extending spirally along the axial direction of the fixing tube 32 .

[0121] In this embodiment, if Fig.12 As shown, the tube wall at the distal end of the fixed tube 32 has a plurality of grooves 322 with distal ends opened, and the plurality of grooves 322 are sequentially spaced apart along the circumference of the tube body.

[0122] The groove 322 can be provided to accommodate the pericardium.

[0123] like Figure 15 to Figure 16 As shown, the present application also provides an action device 30, including an action component 31 using the above technical solution and an expansion sheath 36 movably inserted into a fixed tube 32, wherein the distal end of the expansion sheath 36 is exposed to the distal end of the fixed tube 32, and the proximal end has a limiting portion 361 that abuts against the proximal end of the operating sleeve 33.

[0124] The expansion sheath 36 can close the distal opening of the fixing tube 32, and the fixing tube 32 is inserted into the human tissue along with the distal end of the expansion sheath 36, so as to establish a passage in the chest cavity for the fixing tube 32. The proximal end of the expansion sheath 36 is radially expanded to form a limiting portion 361.

[0125] In this embodiment, the distal end of the expansion sheath 36 is in the form of an arc-shaped cone.

[0126] In this embodiment, the proximal end of the operating sleeve 33 is folded outward to form a flange 331. The flange 331 can increase the anti-deformation strength of the operating sleeve 33.

[0127] like Figure 1 to Figure 2 As shown, an embodiment of the present application also provides a pericardium lifting device, including the action component 31 of the above embodiments and a pericardium lifting device 10 matched with the pericardium lifting device, the pericardium lifting device 10 has a guide member 14 matched with the operating channel 34, and the first step 351, the second step 352 and the third step 353 can respectively keep the guide member 14 in a predetermined position.

[0128] The pericardium lifting device 10 lifts the pericardium in order to achieve pericardial puncture.

[0129] There is no strict restriction on the shape and structure of the guide member 14. For example, in order to adapt to the operating channel 34, the guide member 14 is a slider corresponding to the operating channel 34.

[0130] like Figures 1 to 6As shown, the pericardium lifting device 10 includes two movably sleeved tubes 11, each tube 11 has a relatively distal end and a proximal end, and the tube wall at the distal end of each tube 11 has at least one anchor thorn 12; when the two tubes 11 move relative to each other, the anchor thorns 12 of each tube 11 cooperate with each other to clamp the pericardium.

[0131] When the distal ends of the two tubes 11 move relative to the pericardium, the pericardium enters between two adjacent anchor spikes 12 along the circumferential direction of the tube 11. When the two tubes 11 move relative to each other, the pericardium is clamped by the anchor spikes 12 of each tube 11, and when the distal ends of the two tubes 11 move away from the pericardium, the pericardium is stably pulled to avoid damage to the myocardium and other surrounding tissues.

[0132] The relative movement of the two pipes 11 can be realized by the movement of only one of the pipes 11, or by the movement of the two pipes 11 together. In this embodiment, the cooperation between the two pipes 11 is a rotational cooperation and a sliding cooperation along the axial direction of the pipes. The position between the anchors 12 of the two pipes 11 can be changed in multiple directions to increase the versatility of the pericardium lifting device 10.

[0133] The two pipe fittings 11 are respectively an outer pipe 111 and an inner pipe 112 inserted into the outer pipe 111. The outer wall of the inner pipe 112 is close to or gap-fitted with the inner wall of the outer pipe 111. The anchor bar on the inner pipe 112 is a first anchor bar 1211, and the anchor bar on the outer pipe 111 is a second anchor bar 1212. The interior of the inner pipe 112 provides space for setting more pipelines, which provides a structural basis for complex treatment processes, especially when multiple surgical instruments (such as puncture knives, puncture needles, and endoscopes, etc.) need to enter the inner pipe 112 for operation. The anchor bar 12 is set on the pipe wall of the pipe fitting 11, which can also prevent the anchor bar 12 from interfering with the surgical instruments passing through the inner pipe 112.

[0134] There is no strict restriction on the shape and specific structure of the anchor barb 12, as long as it meets certain mechanical properties, especially the mechanical property requirements of the anchor barb 12 for lifting the pericardium. In order to reduce the process difficulty of the anchor barb 12 and the pipe 11 and increase the structural strength between the anchor barb 12 and the pipe 11, in one embodiment, the anchor barb 12 and the pipe 11 are integrally arranged.

[0135] In this embodiment, the anchor barb 12 and the pipe 11 are located on the same circumferential surface.

[0136] The anchor barb 12 will not change suddenly in the radial direction of the pipe 11, so that the pipe 11 can provide a flat and smooth outer wall, avoiding the need for additional working space during the relative movement of the anchor barb 12, and facilitating the implementation of the intervention process. When the pipe 11 is flattened, the pipe 11 and the anchor barb 12 are in the same plane when the thickness is ignored.

[0137] In this embodiment, for any one of the tubes 11, there are a plurality of anchor thorns 12; along the circumference of the tube, a receiving cavity 121 with an open distal end for the pericardium to enter is formed between two adjacent anchor thorns 12. The receiving cavity 121 enables the pericardium to gather in a preset area, making it easier for the anchor thorns 12 to clamp the preset area. The increase in the number of anchor thorns 12 can improve the effect of lifting the pericardium and ensure the stability of the operation.

[0138] The anchor points of each tube 11 acting on the pericardium are arranged circumferentially around the tube 11, and the central area surrounded by each anchor point faces the cavity part of the inner tube 112, so as to facilitate puncturing the pericardium with tools such as a puncture knife or a puncture needle.

[0139] From a functional point of view, the storage cavity 121 can achieve the effect of stirring up or even hooking and lifting the pericardium. There are many options for the specific shape of the storage cavity 121, and it can even be hook-shaped, which can be achieved from the functional point of view. In this embodiment, a receiving area 122 for receiving at least a part of the pericardium is provided in the storage cavity 121, and the side wall of the open part 125 of the storage cavity 121 is inclined to form a guiding slope 123 for the pericardium to enter the receiving area 122 in the storage cavity 121.

[0140] The guiding slope 123 plays a guiding role while avoiding, and cooperates to realize the movement of the pericardium in the storage cavity 121; at the same time, the guiding slope 123 reserves space for the open part of the pericardium entering the storage cavity 121 and the receiving area 122. The guiding slope 123 is inclined relative to the axis of the pipe. The receiving area 122 extends in the axial direction of the pipe, and the length of the receiving area 122 in the axial direction of the pipe is greater than the length in the circumferential direction of the pipe. The receiving area 122 can retain the pericardium entering the storage cavity 121 in the storage cavity 121, and achieve a certain degree of aggregation or stacking to facilitate the clamping of each anchor 12.

[0141] In this embodiment, the receiving area 122 is connected to the open portion 125 of the receiving cavity 121 in a circumferentially displaced manner. The circumferentially displaced receiving area 122 and the open portion can prevent the pericardium entering the receiving area 122 from escaping from the receiving cavity 121 by itself, thereby improving the restraining ability of the receiving cavity 121 on the pericardium.

[0142] The ultimate purpose of the anchor 12 is to lift the pericardium, so it needs to interact with the pericardium. In terms of the specific action site, referring to an embodiment, the distal end of the anchor 12 is provided with a cutting edge 124 that can pierce the pericardium.

[0143] The blade 124 is used to achieve puncture of the pericardium by the anchor 12 to achieve lifting. For example, the blade 124 punctures part of the pericardium to achieve stable lifting. The blade 124 serves to improve the interaction between the anchor 12 and the pericardium, and is not limited to puncturing or puncturing the pericardium.

[0144] In this embodiment, the cutting edge 124 is marked on the anchor 12 of the outer tube 111, but in actual products, the cutting edge 124 is preferably provided on the inner tube 112, that is, the inner tube 112 is used to pierce the fiber layer and the wall layer, and the outer tube 111 is used to cooperate with the inner tube 112 to clamp the fiber layer and the wall layer.

[0145] In this embodiment, if Figures 4 to 6 As shown, the anchor barbs 12 are arranged obliquely relative to the axis of the pipe 11; and the extension trends of the anchor barbs 12 of the two pipes 11 are arranged in opposite directions.

[0146] The anchor thorns 12 can guide the pericardium into the storage cavity 121, and the anchor thorns 12 will exert a force on the pericardium acting thereon to move away from the myocardium, thereby achieving the aggregation of the pericardium and facilitating the next operation of each anchor thorn 12. The extension trend of the anchor thorns 12 of the two pipe fittings 11 is set in opposite directions along the circumference of the pipe body. For example, the anchor thorns 12 on one pipe fitting 11 extend counterclockwise along the circumference of the pipe body, and the anchor thorns 12 on the other pipe fitting 11 extend clockwise along the circumference of the pipe body.

[0147] When the anchor barbs 12 are arranged obliquely relative to the axis of the tube 11 , the anchor barbs 12 will exert a force on the pericardium acting thereon to move away from the myocardium, thereby achieving the aggregation of the pericardium and facilitating the next operation of each anchor barb 12 .

[0148] The inner tube 112 rotates to allow the pericardium to enter the receiving cavity 121 of the inner tube 112, and the pericardium gathers in the receiving cavity 121 of the inner tube 112, and at the same time the pericardium is wound around the distal end of the inner tube 112; then the outer tube 111 rotates relative to the inner tube 112, and the second anchor thorn 1212 on the outer tube 111 cooperates with the first anchor thorn 1211 on the inner tube 112 to clamp the pericardium.

[0149] Preferably, the cutting edge 124 is arranged on the inner tube 112, that is, the first anchor 1211 on the inner tube 112 is used to pierce the fiber layer and the wall layer, and the second anchor 1212 on the outer tube 111 is used to cooperate with the first anchor 1211 on the inner tube 112 to clamp the fiber layer and the wall layer.

[0150] In this embodiment, if Figure 5 and Figure 6 As shown, the distal ends of the two tubes 11 are provided with windows 113 for endoscope observation.

[0151] When the pericardium is wound around the distal end of the inner tube 112, the pericardium will cover the viewing window 113. At this time, the endoscope can observe the pericardium through the viewing window 113 to determine whether the pericardium is clamped. When each anchor barb 12 clamps the pericardium, at least part of the viewing windows 113 on the two tubes 11 are overlapped.

[0152] In order to increase the field of view of the endoscope, in this embodiment, there are multiple viewing windows 113 on each tube 11 along the circumference of the tube 11. The state between each anchor barb 12 and the pericardium can be observed through the viewing windows 113.

[0153] In this embodiment, the two pipes 11 have an initial state in which the distal end of the inner pipe 112 is exposed outside the outer pipe 111. In the initial state, the first anchor 1211 of the inner pipe 112 is located below the second anchor 1212 of the outer pipe 111. Figures 7 and 8 As shown, the two tubes 11 have a working state in which the outer tube 111 is axially advanced so that the second anchor thorn 1212 of the outer tube 111 and the first anchor thorn 1211 of the inner tube 112 cooperate with each other. In the working state, the first anchor thorn 1211 of the inner tube 112 is located on the inner side of the second anchor thorn 1212 of the outer tube 111, and a clamping gap is provided between the first anchor thorn 1211 of the inner tube 112 and the second anchor thorn 1212 of the outer tube 111. The existence of the clamping gap prevents the two tubes 11 from cutting the pericardium therebetween in the working state.

[0154] When the two tubes 11 contact the pericardium in the initial state, it is convenient for the pericardium to enter the receiving cavity 121 of the inner tube 112. At the same time, when the two tubes 11 contact the pericardium in the initial state, it is prevented that the pericardium is clamped between the second anchor thorn 1212 of the outer tube 111 and the first anchor thorn 1211 of the inner tube 112 before piercing the fiber layer and the wall layer.

[0155] In this embodiment, in the working state, a gathering area 126 is formed between the second anchor thorn 1212 of the outer tube 111 and the first anchor thorn 1211 of the inner tube 112, and the gathering area 126 gradually decreases from the proximal end to the distal end. The distal end of the gathering area 126 can be open or closed. The setting of the gathering area 126 can ensure that the anchor thorn 12 on the pipe 11 firmly clamps the pericardium.

[0156] In this embodiment, the distal limit position of the second anchor 1212 of the outer tube 111 does not exceed the distal end of the first anchor 1211 of the inner tube 112, and the anchor 12 on each tube 11 remains unchanged in the radial position of the tube 11. The inner tube 112 will not affect the tissues other than the distal side during the movement path of the anchor 12 on the outer tube 111.

[0157] The movement path of the second anchor 1212 on the outer tube 111 never exceeds the distal end of the first anchor 1211 of the inner tube 112, that is, the movement path of the second anchor 1212 on the outer tube 111 will not affect tissues other than the distal end of the inner tube 112. When the two tubes 11 are in the switching state, the inner tube 112 remains stationary, and the distal end of the outer tube 111 is axially advanced and rotated synchronously.

[0158] In this embodiment, if Figures 1 to 3 as well as Fig. 9As shown, the pericardium lifting device 10 further includes a driving handle 13, and the driving handle 13 includes:

[0159] A support body 131 connected to the inner tube 112;

[0160] A screw driving mechanism 132 connected to the outer tube 111 and used to drive the outer tube 111 .

[0161] In this embodiment, the medium channel may be a channel in the fixed tube 32 .

[0162] The support body 131 is mainly used to support and fix the inner tube 112, the spiral drive mechanism 132 and other components. Therefore, there is no strict restriction on the shape and specific structure of the support body 131. For example, a frame structure or a solid body component can be used. The general principle is that it should have at least sufficient mechanical strength and ensure a firm connection with the above components. The support body 131 itself can be an integrated structure or a detachable split structure. In order to facilitate disassembly, it can be connected by bolts, pins, etc.

[0163] The spiral drive mechanism 132 drives the outer tube 111 to rotate and axially move the outer tube 111. Various transmission modes in the prior art can be used according to the installation position and movement form of the spiral drive mechanism 132 and the outer tube 111, and the direction and speed of movement can be changed to adapt to the working characteristics of the outer tube 111. The spiral drive mechanism 132 at least ensures the necessary mechanical strength and a good and precise matching method to ensure the movement trajectory, speed and reaction time of the outer tube 111.

[0164] When the action assembly 31 cooperates with the pericardium lifting device 10, the distal ends of the two tubes 11 are inserted into the fixed tube 32, and the anchor barbs 12 on the two tubes 11 can be exposed outside the distal end of the fixed tube 32, or the two tubes 11 can be hidden inside the distal end of the fixed tube 32. Part of the structure of the driving handle 13 is placed in the operating sleeve 33, and the driving handle 13 is guided by the operating sleeve 33. The guide member 14 is located outside the support body 131.

[0165] In this embodiment, the driving handle 13 has an axial direction in space, which is parallel or substantially parallel to the axial direction of each pipe. The driving handle 13 is cylindrical or substantially cylindrical, and each pipe 11 passes through the geometric center of the driving handle 13 .

[0166] The specific configuration of the screw drive mechanism 132 is shown in one embodiment. Figures 9 to 11 As shown, the spiral drive mechanism 132 includes:

[0167] A transmission member 1321 is slidably and rotatably mounted on the support body 131, and the transmission member 1321 is connected to the outer tube 111;

[0168] A rotating handle 1322 rotatably mounted on the periphery of the transmission member 1321 and used to drive the transmission member 1321;

[0169] The pin shaft 1324 , the rotating handle 1322 drives the transmission member 1321 via the pin shaft 1324 .

[0170] The screw drive mechanism 132 further includes a pin shaft 1324 , and the rotating handle 1322 drives the transmission member 1321 via the pin shaft 1324 .

[0171] The provision of the pin shaft 1324 can simplify the structure of the screw drive mechanism 132 to reduce the difficulty of assembling the screw drive mechanism 132 .

[0172] The rotating handle 1322 drives the pin 1324 to rotate along the spiral groove 1311 and move axially along the limiting groove 1323. The spiral groove 1311 allows the pin 1324 to move axially along the driving handle 13 while rotating around the driving handle 13, so as to realize the rotation of the outer tube 111 and the synchronous movement along the axial direction of the pipe 11. The limiting groove 1323 can limit the movement stroke of the transmission member 1321 along the axial direction of the driving handle 13 and the circumferential rotation angle.

[0173] In this embodiment, if Figures 9 to 11 As shown, the transmission member 1321 is disposed in the support body 131, and the support body 131 is provided with a spiral groove 1311 axially arranged around the driving handle;

[0174] The rotating handle 1322 is rotatably mounted on the outer periphery of the supporting body 131, and the rotating handle 1322 has a limiting groove 1323 extending along the axial direction of the driving handle;

[0175] One end of the pin shaft 1324 is connected to the transmission member 1321 , and the other end passes through the spiral groove 1311 and is placed in the limiting groove 1323 .

[0176] In the axial direction of the driving handle, the pin 1324 abuts against two opposite side walls of the spiral groove 1311; in the circumferential direction of the driving handle 13, the pin 1324 abuts against two opposite side walls of the limiting groove 1323. In this embodiment, the outer side of the rotating handle 1322 has anti-slip grooves.

[0177] The support body 131 has a mounting groove 1312 matched with the transmission member 1321, and the transmission member 1321 has a mounting hole 1325. The proximal end of the outer tube 111 extends into the mounting hole 1325 and is fixed in the mounting hole 1325 by gluing or other means. The proximal end of the inner tube 112 passes through the mounting hole 1325 and is fixedly connected to the support body 131. The transmission member 1321 is generally columnar and is generally in contact with the inner wall of the mounting groove 1312.

[0178] In this embodiment, the driving handle 13 has a reduced diameter portion 136 , and the rotating handle 1322 is a tubular structure that is inserted into the reduced diameter portion 136 , and its outer surface is flush with the outer surface of the driving handle 13 .

[0179] The reduced diameter portion 136 is an annular depression formed on the circumference of the driving handle 13, and the two sides of the annular depression are close to the two ends of the rotating handle 1322. In order to facilitate the assembly of the rotating handle 1322 to the reduced diameter portion 136, refer to one embodiment, such as Figures 9 to 11 As shown, the driving handle 13 further includes an operating handle 137, which is mounted on the support body 131 to form one side wall of the annular recess and surround a reduced diameter portion 136 with the support body 131. In order to save the material of the operating handle 137, in another embodiment, the operating handle 137 is hollow.

[0180] Regarding the way the operating handle 137 is installed on the support body 131 , referring to one embodiment, the driving handle 13 also includes a rear end plug 138 , which is threadedly connected to the support body 131 and cooperates with the support body 131 to fix the operating handle 137 .

[0181] Specifically, the operating handle 137 is substantially cylindrical and is sleeved on the outside of a portion of the structure of the support body 131 , with one axial end of the operating handle 137 abutting against the support body 131 and the other end abutting against the rear end plug 138 .

[0182] In order to prevent the operating handle 137 from rotating relative to the supporting body 131 , one of the operating handle 137 and the supporting body 131 is provided with a ridge, and the other is provided with a rotation-stopping groove matched with the ridge.

[0183] In this embodiment, if Figures 9 to 11 As shown, the driving handle 13 further includes a sleeve 134 movably connected to the support body 131 . The sleeve 134 is sleeved outside the outer tube 111 and has a first state of wrapping the anchor 12 and a second state of exposing the anchor 12 .

[0184] When the pericardium lifting device 10 is not in use, the sleeve 134 wraps the anchor bar 12 to protect the anchor bar 12. When the pericardium lifting device 10 is in use, the sleeve 134 exposes the anchor bar 12 to prevent the sleeve from interfering with the anchor bar 12, so that the anchor bar 12 can clamp the pericardium. When the two tubes 11 are in the initial state, the sleeve 134 wraps the anchor bar 12 to protect the anchor bar 12. When the two tubes 11 are in the working state, the sleeve 134 exposes the anchor bar 12 to prevent the sleeve 134 from interfering with the anchor bar 12, so that the first anchor bar 1211 of the inner tube 112 and the second anchor bar 1212 of the outer tube 111 can clamp the pericardium.

[0185] In this embodiment, the driving handle 13 also includes a front end plug 139 and an elastic member 135. The front end plug 139 is installed on the support body 131 and forms a movable groove with the support body 131. The proximal end of the sleeve 134 enters the movable groove through the front end plug 139 and has an outer flange that matches the front end plug 139. The elastic member 135 is pressed between the transmission member 1321 and the sleeve 134 to drive the sleeve 134 to maintain the first state.

[0186] The distal end of the support body 131 is open, and the front end plug 139 is fixed (e.g., by threaded engagement) to the open end of the support body 131 to enclose a movable groove. The movable groove is separated from the mounting groove 1312 by a partition 1313, and one end of the elastic member 135 abuts against the partition 1313, and the other end abuts against the sleeve 134. The front end plug 139 has a through hole for the sleeve 134 to pass through. When the sleeve 134 is in the first state, the outer flange 1343 fits with one side of the front end plug 139 located in the movable groove.

[0187] The sleeve 134 includes a first portion 1341 at the distal end and a second portion 1342 at the proximal end. The first portion 1341 is substantially in contact with the outer tube 111. There is a certain installation gap between the second portion 1342 and the outer tube 111 to accommodate the elastic member 135. The second portion 1342 can slide along the through hole of the front end plug 139. In this embodiment, the elastic member 135 is a spring.

[0188] Of course, in other embodiments, the driving handle 13 further includes a partition 1313 , the partition 1313 is pressed against the inner wall of the movable groove, and the elastic member 135 is pressed between the partition 1313 and the sleeve 134 to separate the elastic member 135 from the transmission member 1321 .

[0189] Based on the pericardium lifting device in the above embodiments, Fig.21 As shown, the present application also provides an operation method of a pericardial lifting device, which can be implemented in vivo on the pericardium or in vitro, for example, on a simulated object. For the convenience of description, the following takes the pericardium as an example.

[0190] The operation method of this embodiment includes:

[0191] S100, pushing the action assembly 31 until the distal end of the fixing tube 32 approaches the target area.

[0192] S200, the guide member 14 of the pericardium lifting device 10 enters the first section 343 from the inlet 341, pushes the pericardium lifting device 10 in the inner cavity of the operating sleeve 33, and the guide member 14 moves along the first section 343. When reaching the distal end of the first section 343, the anchor barb 12 is exposed outside the distal end of the fixing tube 32 and contacts or is at least adjacent to the target area.

[0193] S300 , operating the pericardium lifting device 10 so that the distal end of the pericardium lifting device 10 acts on the target area, wherein when operating the pericardium lifting device 10 , the relative position with respect to the action component 31 is limited by the constraint structure 35 .

[0194] In step S300, the operation of the pericardium lifting device 10 includes:

[0195] S310, the guide member 14 of the pericardium lifting device 10 enters the second section 344 from the first section 343, and then the guide member 14 of the pericardium lifting device 10 moves along the second section 344, and the inner tube 112 is rotated to put the first anchor 1211 in place. During the rotation process, the first anchor 1211 acts on the target area to achieve a pre-anchoring effect. In this step, when the guide member 14 of the pericardium lifting device 10 moves along the second section 344 to the second section, the constraint structure 35 restricts the guide member 14.

[0196] S320, push the outer tube 111 along the axial direction of the inner tube 112, so that the second anchor 1212 at the distal end of the outer tube 111 approaches the target area; in order to avoid interference with the pre-anchoring of the first anchor 1211, before this step, the second anchor 1212 is always on the proximal side of the first anchor 1211, and in this step, the second anchor 1212 moves toward the distal end, that is, gradually approaches the first anchor 1211, and preferably, the second anchor 1212 never crosses the first anchor 1211 during the entire process.

[0197] S330, rotating the outer tube 111, so that the second anchor 1212 at the distal end of the outer tube 111 is in place, that is, it cooperates with the first anchor 1211 to form a clamping posture. When the outer tube 111 is rotated, the direction is opposite to the direction of rotating the inner tube 112 in step S310, which is more convenient to form a clamping posture. At this time, the first anchor 1211 and the second anchor 1212 that cooperate with each other are preferably not staggered to avoid shearing. Compared with the previous pre-anchoring, the clamping posture can further prevent the slipping of each anchor 12 and the target area.

[0198] When step S320 and step S330 are performed simultaneously, when the guide member 14 of the pericardium lifting device 10 enters the second end of the second section 344, the rotating handle 1322 rotates forward and drives the pin shaft 1324 to rotate along the spiral groove 1311, and the pin shaft 1324 drives the outer tube 111 to rotate through the transmission member 1321. Since the spiral groove 1311 is used for guidance, the outer tube 111 rotates forward and is also advanced axially until the second anchor 1212 and the first anchor 1211 cooperate with each other to clamp the pericardium.

[0199] S340, maintaining the clamping posture, the guide member 14 of the pericardium lifting device 10 enters the third section 345 from the second end of the second section 344, and then the guide member 14 of the pericardium lifting device 10 moves along the third unit area 3451 of the third section 345, and simultaneously lifts the two pipes 11 to the expected amplitude. When lifting the two pipes 11, the target area can be pulled. For subsequent operations, taking puncture as an example, the puncture needle can be used to perform a puncture biopsy on the lifted pericardium. Since the pericardium at the puncture site is lifted and bulged, damage to the surrounding tissues such as the myocardium is avoided. In this step, when the guide member 14 moves along the third section 345 to the proximal end of the third unit area 3451, the constraint structure 35 restricts the guide member 14.

[0200] Subsequently, the method for operating the pericardial lifting device may further include:

[0201] S400, rotating the outer tube 111 in the opposite direction to release the target area from the second anchor 1212 and the first anchor 1211. When rotating the outer tube 111, the direction is opposite to the direction of rotating the outer tube 111 in step S330.

[0202] In step S400, after the guide member 14 of the pericardium lifting device 10 enters the proximal end of the third unit area 3451, the rotating handle 1322 rotates in the opposite direction and drives the pin shaft 1324 to rotate along the spiral groove 1311. The pin shaft 1324 drives the outer tube 111 to rotate in the opposite direction through the transmission member 1321 and also retreats axially until the distal end of the pericardium lifting device 10 releases the target area.

[0203] S500, synchronously or intermittently recover the pericardium lifting device 10 and the action assembly 30. In this step, the guide member 14 of the pericardium lifting device 10 enters the fourth unit area 3452 of the third section 345 from the third unit area 3451 of the third section 345, then the guide member 14 of the pericardium lifting device 10 moves along the fourth unit area 3452 of the third section 345, and finally, the guide member 14 of the pericardium lifting device 10 exits the operation sleeve 33 from the outlet 342, completing the recovery of the pericardium lifting device 10 relative to the operation assembly 30.

[0204] like Figure 1 to Figure 2 and Fig.17 As shown, an embodiment of the present application also provides a pericardial intervention system 100, including the pericardial lifting device of the above embodiments and a pericardial puncture device 20 matched with the pericardial lifting device, the pericardial puncture device 20 includes a puncture member 21, the puncture member 21 is movably installed in the innermost tube 11 (inner tube 112), and has a puncture state moving toward the distal end, the puncture member 21 in the puncture state is used to puncture the pericardium interacting with each anchor barb.

[0205] The puncturing action is achieved by the puncturing member 21 .

[0206] In the implementation of the piercing member 21, Figures 17 to 19 As shown, referring to one embodiment, the puncture member 21 includes a driving segment 211 extending from the distal end to the proximal end of the inner tube 112 and a puncture segment 212 arranged at the distal end of the driving segment 211, and the driving segment 211 is movably matched with the inner tube 112 and is used to drive the puncture segment 212 to enter the puncture state.

[0207] Different designs of the puncture member 21 can meet different treatment requirements. Fig.16 In this embodiment, the distal end of the puncture segment 212 converges to form a sharp portion 213 for cutting the pericardium. The sharp portion 213 can puncture the pericardium, and the puncture segment 212 and the driving segment 211 can be provided with a connecting channel inside to set other pipelines, so as to facilitate subsequent operations after puncture.

[0208] The driving section 211 is movably installed in the inner tube 112, and a corresponding driving structure 22 can be set. The driving section 211 is driven by the driving structure 22. When the tube 11 completes the lifting of the pericardium, the puncture section 212 can stably achieve pericardial puncture, thereby carrying out further treatment process.

[0209] The driving structure 22 is mainly used to drive the driving section 211 to perform linear reciprocating motion along the axial direction of the pipe. In order to achieve its basic function, a motor, a cylinder, a hydraulic cylinder or even a manual driving component can be selected from the existing technology. When the motion mode directly output by the driving structure 22 is inconsistent with the motion mode of the driving section 211, appropriate transmission components can be used to convert and transmit the motion form.

[0210] Regarding the implementation of the driving structure 22, referring to one embodiment, as shown in FIG. Fig.17 As shown, the driving structure 22 includes a limiter 221, which is movably connected to the pericardium lifting device 10 or the pericardium puncturing device 20 and fixedly connected to the driving section 211, so as to control the depth of the puncturing member 21 puncturing the pericardium.

[0211] The stopper 221 is sleeved on the outside of the pericardium lifting device 10 and has a notch 222 for avoiding the rotating handle 1322. The stopper 221 is generally cylindrical, with one axial end of the stopper 221 being a closed end and the other end being an open end, the closed end having a hole, the outer side wall of the puncture member 21 being fixed in the hole, the outer side of the stopper 221 having a joint, and the external pipeline is connected to the inside of the puncture member 21 through the joint.

[0212] After the fourth stage of the operation sleeve 33 and the pericardium lifting device 10 being used in coordination, that is, after the guide member 14 of the pericardium lifting device 10 reaches the proximal end of the third unit area 3451, the limiter 221 is sleeved on the outer side of the pericardium lifting device 10 from the open side, and the limiter 221 is axially pushed, and the limiter 221 drives the puncture member 21 to move along the fixed tube 32 for puncture. In order to limit the puncture section 212 from reaching the limit position, the outer peripheral edge of the open side abuts against the flange 331 on the operation sleeve 33 to provide safety protection.

[0213] Referring to one embodiment, Figures 17 to 20 As shown, the pericardial puncture device 20 also includes a guide tube 23 having multiple channels 231, and multiple connectors 232 installed at the proximal end of the guide tube 23 and respectively connected to the corresponding channels 231. The puncture member 21 movably penetrates one of the channels 231, and other equipment (such as endoscopes, etc.) can be inserted into the remaining channels 231.

[0214] The front plug 139 has a through hole for the guide tube 23 to pass through, and the connection between each joint 232 and the guide tube 23 has a limiting boss that matches the front plug 139. The extension path of one joint 232 is consistent with the axis of the guide tube 23, and the extension paths of the other joints 232 are arranged in an arc shape. The side wall of the limiting member 221 has a strip hole 223 that matches the joint 232 with the arc-shaped extension path.

[0215] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. When the technical features in different embodiments are embodied in the same figure, it can be regarded that the figure also discloses the combination examples of the various embodiments involved.

[0216] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. An action component based on a pericardial lifter, characterized in that: The action assembly is used to cooperate with the pericardium lifting device, and the pericardium lifting device has a guide member. The action assembly includes: a fixed tube having opposing distal and proximal ends; An operation sleeve connected to the proximal end of the fixing tube, wherein the side wall of the operation sleeve is provided with an operation channel, wherein the operation channel is used to receive and guide the guide member of the pericardium lifting device, and wherein one axial end of the operation sleeve is an open end, wherein the open end is used to allow the pericardium lifting device to enter; a restraining structure, disposed at a predetermined position of the operating channel, for maintaining the pericardium lifter at a current position; The two ends of the operation channel are provided with an inlet and an outlet, and the inlet and the outlet are located at the proximal end of the operation sleeve; the operation channel comprises: The first section has an extension direction at least having a direction vector along the axial direction of the operation sleeve, and the proximal end of the first section is connected to the inlet; The second section has an extension direction having at least a direction vector along the circumference of the operation sleeve, and has a first end and a second end opposite to each other, and the first end of the second section is connected to the distal end of the first section; The third section has an extension direction that at least has a direction vector along the axial direction of the operation sleeve, a distal end of the third section is connected to the second end of the second section, and a proximal end of the third section is connected to the outlet.

2. The action assembly based on the pericardium lifter according to claim 1, characterized in that: Along the circumference of the operation sleeve, the second section includes a first unit area and a second unit area, the first unit area is connected to the first section, and the second unit area is connected to the third section; The first unit area and the second unit area are transitionally connected via a first step.

3. The action assembly based on the pericardium lifter according to claim 2, characterized in that: The junction between the second section and the third section is connected via a docking interface; A partial structure of the second section passes over the docking port, and the partial structure is provided with a second step for maintaining the position of the pericardium lifting device.

4. The action assembly based on the pericardium lifter according to claim 2, characterized in that: The third section is turned along the axial direction of the operating sleeve to form a third unit area and a fourth unit area, and a third step is arranged at the turning point.

5. The action assembly based on the pericardium lifter according to claim 1, characterized in that: The restraining structure is formed by the side wall of the working channel.

6. The action assembly based on the pericardium lifter according to claim 1, characterized in that: The action assembly further comprises a force-applying component acting between the operation sleeve and the pericardium lifting device, wherein the force-applying component provides a force acting on the pericardium lifting device along the axial direction of the operation sleeve and separating from the operation sleeve.

7. The action assembly based on the pericardium lifter according to claim 1, characterized in that: The outer side wall of the fixed tube is provided with a spiral portion; The tube wall at the distal end of the fixed tube has a plurality of grooves with distal ends opened, and the plurality of grooves are sequentially spaced and arranged along the circumference of the tube body.

8. The action device is characterized in that: include: Adopting the action component described in any one of claims 1 to 7; The expansion sheath is movably arranged in the fixing tube, the distal end of the expansion sheath is exposed to the distal end of the fixing tube, and the proximal end has a limiting portion that abuts against the proximal end of the operation sleeve.

9. A pericardial lifter device, characterized in that: include: Adopting the action component described in any one of claims 1 to 7; A pericardium lifter is matched with the operating channel through the guide member.

Images