Pericardium lifter, pericardium lifter device, pericardium intervention system and operation method

Abstract

The present application discloses a pericardial lifting device, a pericardial lifting device device, a pericardial intervention system and an operation method. The pericardial lifting device comprises two movable sleeved pipes, each pipe having a relatively distal end and a proximal end, and the pipe wall at the distal end of each pipe has at least one anchor thorn; when the two pipes move relative to each other, the anchor thorns of each pipe cooperate with each other to clamp the pericardium. Compared with the prior art, the anchor thorns of each pipe clamp the pericardium, and when the distal ends of the two pipes move away from the pericardium, the pericardium is stably pulled to avoid damage to the myocardium and other peripheral tissues.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and specifically to a pericardial lifter, a pericardial lifter device, a pericardial intervention system, 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 a pericardial lifting device, comprising two movably sleeved tubes, each tube having a relatively distal end and a proximal end, and the tube wall at the distal end of each tube having at least one anchor barb;

[0008] When the two pipes move relative to each other, the anchor thorns of each pipe cooperate with each other to clamp the pericardium.

[0009] The anchor barbs of each pipe fitting clamp the pericardium, and when the distal ends of the two pipe fittings move away from the pericardium, the pericardium is stably pulled to avoid damage to the myocardium and other peripheral tissues.

[0010] 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.

[0011] Optional, for any of the pipe fittings:

[0012] The number of the anchor thorns is multiple;

[0013] Along the circumference of the tube, a receiving cavity is formed between two adjacent anchoring spines, the distal ends of which are open and for the pericardium to enter.

[0014] The receiving cavity gathers the pericardium in a preset area, making it easier for the anchors to clamp the preset area. The increase in the number of anchors can improve the effect of lifting the pericardium and ensure the stability of the operation.

[0015] Optionally, a receiving area for receiving at least a portion of the pericardium is provided in the receiving cavity, and a side wall of an open portion of the receiving cavity is inclined to form a guiding slope for the pericardium to enter the receiving area in the receiving cavity.

[0016] The guiding slope plays a guiding role while avoiding, and cooperates to realize the movement of the pericardium in the storage cavity; at the same time, the guiding slope reserves space for the open part and the receiving area of ​​the pericardium to enter the storage cavity.

[0017] Optionally, the anchor barb and the pipe fitting are located on the same circumferential surface.

[0018] The anchor barb will not undergo a sudden change in the radial direction of the pipe fitting, so that the pipe fitting can provide a flat and smooth outer wall, avoiding the need for additional working space during the relative movement of the anchor barb, and facilitating the implementation of the intervention process.

[0019] Optionally, the anchor barb is arranged obliquely relative to the axis of the pipe;

[0020] The extension trends of the anchor spikes of the two pipe fittings are arranged in opposite directions.

[0021] The anchor thorns can guide the pericardium into the receiving cavity. The anchor thorns will exert a force on the pericardium that acts on it away from the myocardium, thereby achieving the gathering of the pericardium and facilitating the next operation of each anchor thorn.

[0022] Optionally, the two pipes are fitted in a rotational manner and in a sliding manner along the axial direction of the pipes.

[0023] The position between the anchoring spikes of the two pipe pieces can be changed in multiple directions to increase the versatility of the pericardium lifting device.

[0024] Optionally, the distal ends of the two tubes have windows for endoscopic observation.

[0025] The status between each anchor spike and the pericardium was observed through the window.

[0026] Optionally, the two pipes are respectively an outer pipe and an inner pipe passing through the outer pipe;

[0027] The two pipes have an initial state in which the distal end of the inner pipe is exposed outside the outer pipe, and a working state in which the outer pipe is axially advanced so that the anchor barbs of the outer pipe cooperate with the anchor barbs of the inner pipe.

[0028] This facilitates the pericardium to enter the receiving cavity of the inner tube, and at the same time, avoids the anchor barbs of the outer tube from being attached to the pericardium and causing effects.

[0029] Optionally, in a working state, a gathering area is formed between the anchor thorns of the outer tube and the anchor thorns of the inner tube.

[0030] The setting of the gathering area can ensure that the anchor barbs on the pipe clamp the pericardium firmly.

[0031] Optionally, the extreme position of the distal end of the anchor barb of the outer tube does not exceed the distal end of the anchor barb of the inner tube, and the anchor barb on each pipe piece maintains an unchanged radial posture in the pipe piece.

[0032] The movement path of the anchor barb on the outer tube will not affect tissues other than the distal end of the inner tube.

[0033] Optionally, the pericardium lifting device further includes a driving handle, and the driving handle includes:

[0034] a support body connected to the inner tube;

[0035] A spiral driving mechanism is connected to the outer tube and used for driving the outer tube.

[0036] The inner tube and the outer tube can be operated separately through the driving handle, so that the operator can control the puller conveniently.

[0037] Optionally, the spiral drive mechanism comprises:

[0038] A transmission member slidably and rotatably mounted on the support body, the transmission member being connected to the outer tube;

[0039] A rotary handle is rotatably mounted on the outer periphery of the transmission member and is used to drive the transmission member.

[0040] The operator only needs to rotate the handle to drive the outer tube to move through the transmission member. This setting can structurally avoid operating problems for the operator and reduce learning costs.

[0041] Optionally, the spiral drive mechanism further includes a pin shaft, and the rotating handle drives the transmission member via the pin shaft.

[0042] The provision of the pin shaft can simplify the structure of the screw drive mechanism to reduce the difficulty of assembling the screw drive mechanism.

[0043] Optionally, the driving handle has an axial direction in space;

[0044] The transmission member is arranged in the support body, and the support body is provided with a spiral groove arranged axially around the driving handle;

[0045] The rotating handle is rotatably mounted on the outer periphery of the support body, and the rotating handle has a limiting groove extending along the axial direction of the driving handle;

[0046] One end of the pin shaft is connected to the transmission member, and the other end passes through the spiral groove and is placed in the limiting groove.

[0047] The rotating handle drives the pin to rotate along the spiral groove and move axially along the limit groove. The spiral groove allows the pin to move axially along the driving handle while rotating around the driving handle, so as to realize the outer tube rotation and synchronous movement along the axial direction of the pipe. The limit groove can limit the movement stroke of the transmission member along the axial direction of the driving handle and the circumferential rotation angle.

[0048] Optionally, the driving handle further comprises a sleeve movably connected to the support body, wherein the sleeve is sleeved on the outside of the outer tube and has a first state of wrapping the anchor barb and a second state of exposing the anchor barb.

[0049] When the pericardial lifting device is not in use, the sleeve wraps the anchor thorn to protect the anchor thorn. When the pericardial lifting device is in use, the sleeve exposes the anchor thorn to avoid the sleeve interfering with the anchor thorn, making it easier for the anchor thorn to clamp the pericardium.

[0050] Optionally, the driving handle further comprises a front end plug and an elastic member, wherein the front end plug is mounted on the support body and forms a movable groove with the support body, the proximal end of the sleeve passes through the front end plug and enters the movable groove, and has an outer flange matched with the front end plug, and the elastic member is pressed between the transmission member and the sleeve to drive the sleeve to maintain the first state;

[0051] Alternatively, the driving handle also includes a front end plug, an elastic member and a partition, the front end plug is installed on the support body and forms a movable groove with the support body, the proximal end of the sleeve passes through the front end plug into the movable groove, and has an outer flange that cooperates with the front end plug, the partition is pressed against the inner wall of the movable groove, and the elastic member is pressed between the partition and the sleeve to drive the sleeve to maintain the first state.

[0052] In the absence of external force, the elastic member can keep the sleeve in the first state to further protect the anchor. The front end plug facilitates the installation of the sleeve and the elastic member in the movable groove, and the setting of the outer flange can limit the sleeve from leaving the movable groove.

[0053] The present application also provides a pericardial lifting device, comprising:

[0054] The pericardium lifter described in this application;

[0055] An action component for receiving and guiding the pericardium lifting device.

[0056] The present application also provides a pericardial intervention system, comprising:

[0057] The pericardial lifter device described in this application;

[0058] A pericardial puncture device matched with the pericardial lifting device.

[0059] The present application also provides an operating method of the pericardium lifting device, comprising:

[0060] S100, pushing the first pipe along a preset path so that the anchor barb at the distal end of the first pipe approaches the target area;

[0061] S200, rotating the first pipe member to put the anchor barb at the distal end of the first pipe member into position;

[0062] S300, 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;

[0063] S400, 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;

[0064] S500, synchronously pull the two pipes to the expected extent.

[0065] The anchor barbs of each pipe fitting clamp the target area so that the two pipe fittings can stably pull the target area.

[0066] Optionally, the method for operating the pericardium lifting device further includes:

[0067] S600, relatively rotating the two pipe fittings to release the clamping posture of the anchors on the two pipe fittings;

[0068] S700, withdrawing the two pipes along the preset path.

[0069] After the lifting operation of the target area is completed, the anchor barbs on the two pipes release the clamping posture and the two pipes are recovered.

[0070] Optionally, in step S100, when the first pipe is pushed along a preset path, the second pipe moves synchronously with the first pipe, and the anchor barb of the second pipe is located at the proximal side of the anchor barb of the first pipe.

[0071] The anchor barb at the distal end of the first pipe member and the anchor barb at the distal end of the second pipe member approach the target area synchronously.

[0072] Optionally, step S300 and step S400 are performed simultaneously.

[0073] When the extension path of the anchor barb at the distal end of the second pipe is inclined along the axial direction of the pipe, it is more conducive to clamping the target area.

[0074] Optionally, in step S400, when the anchors in the pipes cooperate with each other in a clamping posture, the anchors of the pipes are not staggered.

[0075] When the anchor barbs of each pipe fitting clamp the target area, avoid shearing the clamped portion of the target area.

[0076] The pericardial lifter, pericardial lifter device, pericardial intervention system and operation method in the present application can stably pull the pericardium and avoid damage to surrounding tissues such as the myocardium. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Figure 1 A schematic diagram of the structure of a pericardial intervention system according to an embodiment of the present application;

[0078] Figure 2 A schematic diagram of the structure of a pericardial intervention system according to an embodiment of the present application;

[0079] Figure 3 for Figure 1 A schematic diagram of the structure of the center bag lifting device;

[0080] Figure 4 for Figure 3 Schematic diagram of the structure of each pipe fitting;

[0081] Figure 5 for Figure 4 A schematic diagram of the partial structure of the middle inner tube;

[0082] Figure 6 for Figure 4 Schematic diagram of the partial structure of the middle and outer tubes;

[0083] Figure 7 for Figure 3 The structural schematic diagram of the two pipes in the middle is in the initial state;

[0084] Figure 8 for Figure 3 The structural schematic diagram of the two pipes in the middle is in working state;

[0085] Fig. 9 for Figure 3 A cross-sectional view of the center bag lifter;

[0086] Fig.10 for Figure 3 A schematic diagram of the structure of the center bag lifter omitting the rotating handle;

[0087] Fig.11 for Figure 3Schematic diagram of the structural breakdown of the center bag lifter;

[0088] Fig.12 for Figure 1 Schematic diagram of the structure of the action component;

[0089] Fig.13 for Fig.12 Schematic diagram of the local structure of the action component;

[0090] Fig.14 for Fig.13 Schematic diagram of the local structure of the action component;

[0091] Fig.15 A schematic diagram of the structure of an action device according to an embodiment of the present application;

[0092] Fig.16 for Fig.15 Schematic diagram of the structural breakdown of the middle action device;

[0093] Fig.17 for Figure 1 A schematic diagram of the structure of a central pericardial puncture device;

[0094] Fig.18 for Fig.17 A schematic diagram of the structure of the middle guide tube and the puncture member;

[0095] Fig.19 for Fig.18 Schematic diagram of the exploded structure of the middle guide tube and the puncture piece;

[0096] Fig. 20 for Fig.18 a cross-sectional view of the middle guide tube;

[0097] Fig.21 This is a system block diagram of the operating method of the pericardium lifting device according to an embodiment of the present application.

[0098] The reference numerals in the figures are described as follows:

[0099] 100. Pericardial intervention system; 101. Distal end; 102. Proximal end;

[0100] 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;

[0101] 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;

[0102] 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

[0103] 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] like Figures 1 to 6 As shown, the present application provides a pericardium lifting device 10, comprising two movably sleeved tubes 11, each tube 11 having a relative 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.

[0108] 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.

[0109] 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.

[0110] The relative movement of the two pipes 11 can be realized by the movement of only one of the pipes 11, or by the joint movement of the two pipes 11. In this embodiment, the cooperation between the two pipes 11 is rotational cooperation and sliding cooperation along the axial direction of the pipes.

[0111] 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.

[0112] 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.

[0113] In this embodiment, the anchor barb 12 and the pipe 11 are located on the same circumferential surface.

[0114] When the pipe fitting 11 is in a flattened state, the pipe fitting 11 and the anchor barb 12 are in the same plane when the thickness of the pipe fitting 11 and the anchor barb 12 are ignored.

[0115] In this embodiment, for any one of the tubes 11 , there are a plurality of anchor spikes 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 spikes 12 .

[0116] 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.

[0117] 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.

[0118] The guiding inclined surface 123 is arranged to be inclined relative to the axis of the pipe.

[0119] The receiving area 122 extends in the axial direction of the tube, and the length of the receiving area 122 in the axial direction of the tube is greater than the length in the circumferential direction of the tube. The receiving area 122 can retain the pericardium entering the receiving cavity 121 in the receiving cavity 121, and achieve a certain degree of aggregation or stacking to facilitate the clamping of each anchor barb 12.

[0120] 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.

[0121] 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.

[0122] The anchor thorns 12 of the two pipe fittings 11 extend 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.

[0123] 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 .

[0124] 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.

[0125] 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.

[0126] The cutting edge 124 is used to achieve puncture of the pericardium by the anchor 12 to achieve lifting. For example, the cutting edge 124 punctures part of the pericardium to achieve stable lifting. The cutting edge 124 serves to enhance the interaction between the anchor 12 and the pericardium, and is not limited to puncturing or puncturing the pericardium. Preferably, the cutting edge 124 is provided on the inner tube 112, that is, the first anchor 1211 on the inner tube 112 is used to puncture 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.

[0127] 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.

[0128] 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.

[0129] 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 .

[0130] 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.

[0131] 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.

[0132] In this embodiment, in the working state, a gathering area 126 is formed between the second anchor barb 1212 of the outer tube 111 and the first anchor barb 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.

[0133] 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 radial posture of the anchor 12 on each pipe 11 remains unchanged.

[0134] 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.

[0135] In this embodiment, if Figures 1 to 3 as well as Fig. 9 As shown, the pericardium lifting device 10 further includes a driving handle 13, and the driving handle 13 includes:

[0136] A support body 131 connected to the inner tube 112;

[0137] A screw driving mechanism 132 connected to the outer tube 111 and used to drive the outer tube 111 .

[0138] 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.

[0139] 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.

[0140] 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 .

[0141] 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:

[0142] 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;

[0143] A rotating handle 1322 rotatably mounted on the periphery of the transmission member 1321 and used to drive the transmission member 1321;

[0144] The pin shaft 1324 , the rotating handle 1322 drives the transmission member 1321 via the pin shaft 1324 .

[0145] The transmission member 1321 is disposed in the support body 131, and the support body 131 is provided with a spiral groove 1311 disposed axially around the driving handle;

[0146] 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;

[0147] 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 .

[0148] 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.

[0149] 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.

[0150] 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 .

[0151] 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.

[0152] 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 .

[0153] 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 .

[0154] 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.

[0155] 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 .

[0156] When the two tubes 11 are in the initial state, the sleeve 134 wraps the anchor 12 to protect the anchor 12. When the two tubes 11 are in the working state, the sleeve 134 exposes the anchor 12 to prevent the sleeve 134 from interfering with the anchor 12, so that the first anchor 1211 of the inner tube 112 and the second anchor 1212 of the outer tube 111 can clamp the pericardium.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] 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 .

[0161] Based on the pericardium lifting device 10 in the above-mentioned embodiments, Fig.21 As shown, the present application also provides an operation method of a pericardium lifting device 10, 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.

[0162] The operation method of this embodiment includes:

[0163] S100, pushing the first tube along a preset path (eg, an interventional path, or under the guidance of other devices as needed) so that the first anchor 1211 at the distal end of the first tube is close to the target area.

[0164] S200, rotating the first pipe to put the first anchor 1211 in place. During the rotation, the first anchor 1211 will act on the target area to achieve a pre-anchoring effect.

[0165] S300, push the second tube along the axial direction of the first tube so that the second anchor 1212 at the distal end of the second tube 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. In this step, the second anchor 1212 moves toward the distal end, that is, gradually approaches the first anchor 1211. Preferably, the second anchor 1212 does not cross the first anchor 1211 during the entire process.

[0166] S400, rotate the second pipe to put the second anchor 1212 in place, that is, cooperate with the first anchor 1211 to form a clamping posture. When the second pipe is rotated, the direction is opposite to the direction of rotating the first pipe in step S200, 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 anchors from slipping from the target area.

[0167] S500, maintain the clamping posture and simultaneously pull the two pipes 11 to the expected range. When the two pipes 11 are pulled, the target area can be pulled. For subsequent operations, taking puncture as an example, the puncture needle can be used to perform puncture biopsy on the pulled pericardium. Since the pericardium at the puncture site is pulled and bulged, damage to the myocardium and other surrounding tissues is avoided.

[0168] Subsequently, the method for operating the pericardium lifting device 10 may further include:

[0169] S600, relatively rotating the two pipes to release the clamping posture of the anchors on the two pipes, that is, releasing the clamped pericardium.

[0170] S700, withdrawing the two pipes along the preset path to complete the recovery of the two pipes. The withdrawal of the two pipes can be synchronized or spaced.

[0171] In order to guide the movement trend of the pericardial lifting device during use and reduce the difficulty of operation, such as Figure 1 to Figure 2 As shown, an embodiment of the present application also provides a pericardium lifting device, including the pericardium lifting device 10 and the action component 3 of the above embodiments, combined with Figure 12 to Figure 14 As shown, the action component 31 includes:

[0172] a fixed tube 32 having opposite distal and proximal ends;

[0173] 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.

[0174] 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.

[0175] 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.

[0176] 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 .

[0177] 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 in 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.

[0178] 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.

[0179] 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.

[0180] 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.

[0181] 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 .

[0182] 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;

[0183] The operating channel 34 includes:

[0184] 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 ;

[0185] 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;

[0186] 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 .

[0187] The setting of the inlet 341 and the outlet 342 can guide the guide member 14 of the pericardium lifting device 10 to enter / exit the operating channel 34.

[0188] 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 .

[0189] When the operation sleeve 33 and the pericardium lifting device 10 are used together, they specifically include:

[0190] In the first stage, the guide member 14 of the pericardium lifting device 10 enters the first section 343 from the inlet 341 and 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 the first anchor barb 1211 on the inner tube 112 contacts the pericardium.

[0191] In the second stage, 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. During the movement, the first anchor thorn 1211 on the inner tube 112 first penetrates the fiber layer and the wall layer, and as the inner tube 112 rotates, the first anchor thorn 1211 drives the pericardium to roll around the outer side of the inner tube 112 through the fiber layer and the wall layer.

[0192] In the third stage, 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. 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 pushed forward in the axial direction until the second anchor thorn 1212 of the outer tube 111 and the first anchor thorn 1211 on the inner tube 112 cooperate with each other to clamp the pericardium.

[0193] In the fourth stage, 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 the outer tube 111 and the inner tube 112 are synchronously withdrawn toward the proximal end, so that the distal end of the pericardium lifting device 10 starts to lift the pericardium through the second anchor thorn 1212 of the outer tube 111 and the first anchor thorn 1211 on the inner tube 112;

[0194] The amplitude of the pulling is also limited by the operating sleeve 33. As the pulling progresses, after the guide member 14 reaches the proximal end of the third unit area 3451, the pericardium is punctured.

[0195] In the fifth stage, 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 second anchor thorn 1212 of the outer tube 111 and the first anchor thorn 1211 on the inner tube 112 release the pericardium.

[0196] In the sixth stage, 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, and then the guide member 14 of the pericardium lifting device 10 moves along the fourth unit area 3452 of the third section 345. Finally, the guide member 14 of the pericardium lifting device 10 exits the operating sleeve 33 from the outlet 342 to complete the recovery.

[0197] 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.

[0198] 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;

[0199] The first unit area 3441 and the second unit area 3442 are transitionally connected via a first step 351 .

[0200] 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 .

[0201] 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;

[0202] 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 guide member 14 of the pericardium lifting device 10 .

[0203] 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 first anchor thorn 1211 of the inner tube 112 is located outside the fixed tube 32, and the outer tube 111 rotates relative to the inner tube 112 and moves axially along the inner tube 112 to put the two tubes 11 into a working state. After the two tubes 11 enter the working state (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), the pericardium can be lifted to increase the spacing distance between the fiber layer, the wall layer and the epicardium. In this embodiment, the constraint structure 35 includes the second step 352.

[0204] 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.

[0205] The third step 353 can also keep the pericardium lifting device 10 at the current position. At this time, the outer tube 111 rotates relative to the inner tube 112 and moves axially along the inner tube 112 to make the two tubes 11 enter the initial state. After the two tubes 11 enter the initial state, the inner tube 112 can be axially rotated to separate the first anchor 1211 on the inner tube 112 from the pericardium. In this embodiment, the constraint structure 35 includes the third step 353.

[0206] Regarding the cooperation between the pericardium lifting device 10 and the operating channel 34, referring to one embodiment, as shown in FIG. Figure 1 and Figure 2 As shown, the pericardium elevator 10 has a guide member 14 that cooperates with the operating channel 34.

[0207] 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.

[0208] In this embodiment, the guide member 14 is disposed on the outside of the pericardium lifting device 10. For example, the guide member 14 is located on the outside of the support body 131.

[0209] 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 .

[0210] Under the action of the force-applying component, when no external force acts between the pericardium lifting device 10 and the action assembly 31 , the guide member 14 abuts against the side wall of the proximal end of the operating channel 34 .

[0211] The force-applying component can be a part of the operation 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 operation 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 the elastic member 135 in the above embodiments.

[0212] In this embodiment, if Fig.12 As shown, the outer wall of the fixing tube 32 is provided with a spiral portion 321 .

[0213] 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 .

[0214] 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.

[0215] The groove 322 can be provided to accommodate the pericardium.

[0216] 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.

[0217] 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.

[0218] In this embodiment, the distal end of the expansion sheath 36 is in the form of an arc-shaped cone.

[0219] 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.

[0220] like Figure 1 to Figure 2 and Fig.17As shown, the present application also provides a pericardial intervention system 100, including a pericardial lifting device and a pericardial puncture device 20 matched with the pericardial lifting device. The pericardial lifting device adopts the pericardial lifting device in the above-mentioned technical scheme. The pericardial puncture device 20 includes a puncture member 21, which 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 that interacts with each anchor barb.

[0221] 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.

[0222] 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.

[0223] 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.

[0224] 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.

[0225] 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.

[0226] 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.

[0227] 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.

[0228] 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.

[0229] 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.

[0230] 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.

[0231] 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. A pericardial lifter, characterized in that: The invention comprises two tubes which are movably sleeved, each tube having a distal end and a proximal end, and the tube wall at the distal end of each tube has at least one anchor barb; for any one of the tubes: The number of the anchor thorns is multiple; Along the circumference of the tube, a receiving cavity is formed between two adjacent anchor spikes, the distal ends of which are open and for the pericardium to enter, and a receiving area for receiving at least a part of the pericardium is provided in the receiving cavity; The two tubes are respectively an outer tube and an inner tube inserted in the outer tube. The two tubes have an initial state in which the distal end of the inner tube is exposed outside the outer tube, and a working state in which the outer tube is axially advanced so that the anchor thorns of the outer tube cooperate with the anchor thorns of the inner tube. The pericardium lifting device also includes a driving handle, which includes: a support body connected to the inner tube; A spiral drive mechanism connected to the outer tube and used to drive the outer tube; When the two pipes move relative to each other, the anchor thorns of each pipe cooperate with each other to clamp the pericardium.

2. The pericardium lifting device according to claim 1, characterized in that: The side wall of the open part of the storage cavity is inclined to form a guiding slope for the pericardium to enter the receiving area in the storage cavity.

3. The pericardium lifting device according to claim 1, characterized in that: The anchor barb and the pipe fitting are located on the same circumferential surface.

4. The pericardium lifting device according to claim 1, characterized in that: The anchor barb is arranged obliquely relative to the axis of the pipe; The extension trends of the anchor spikes of the two pipe fittings are arranged in opposite directions.

5. The pericardium lifting device according to claim 1, characterized in that: The matching mode between the two pipe fittings is rotational matching and sliding matching along the axial direction of the pipe fittings.

6. The pericardium lifting device according to claim 1, characterized in that: The distal ends of the two tubes are provided with windows for endoscope observation.

7. The pericardium lifting device according to claim 1, characterized in that: In the working state, a gathering area is formed between the anchor thorns of the outer tube and the anchor thorns of the inner tube.

8. The pericardium lifting device according to claim 1, characterized in that: The distal end limit position of the anchor barb of the outer tube does not exceed the distal end of the anchor barb of the inner tube, and the anchor barb on each pipe piece maintains a constant radial posture in the pipe piece.

9. The pericardium lifting device according to claim 8, characterized in that: The spiral drive mechanism comprises: A transmission member slidably and rotatably mounted on the support body, the transmission member being connected to the outer tube; A rotary handle is rotatably mounted on the outer periphery of the transmission member and is used to drive the transmission member.

10. The pericardium lifting device according to claim 9, characterized in that: The spiral drive mechanism also includes a pin shaft, and the rotating handle drives the transmission member through the pin shaft.

11. The pericardium lifting device according to claim 10, characterized in that: The driving handle has an axial direction in space; The transmission member is arranged in the support body, and the support body is provided with a spiral groove arranged axially around the driving handle; The rotating handle is rotatably mounted on the outer periphery of the support body, and the rotating handle has a limiting groove extending along the axial direction of the driving handle; One end of the pin shaft is connected to the transmission member, and the other end passes through the spiral groove and is placed in the limiting groove.

12. The pericardium lifting device according to claim 9, characterized in that: The driving handle also includes a sleeve movably connected to the support body, the sleeve is sleeved outside the outer tube, and has a first state of wrapping the anchor barb and a second state of exposing the anchor barb.

13. The pericardium lifting device according to claim 12, characterized in that: The driving handle further comprises a front end plug and an elastic member, wherein the front end plug is mounted on the support body and forms a movable groove with the support body, the proximal end of the sleeve passes through the front end plug and enters the movable groove, and has an outer flange matched with the front end plug, and the elastic member is pressed between the transmission member and the sleeve to drive the sleeve to maintain the first state; Alternatively, the driving handle also includes a front end plug, an elastic member and a partition, the front end plug is installed on the support body and forms a movable groove with the support body, the proximal end of the sleeve passes through the front end plug into the movable groove, and has an outer flange that cooperates with the front end plug, the partition is pressed against the inner wall of the movable groove, and the elastic member is pressed between the partition and the sleeve to drive the sleeve to maintain the first state.

14. A pericardial lifter device, characterized in that: include: A pericardium lifting device according to any one of claims 1 to 13; The motion component is used to receive and guide the pericardium lifting device, the motion component is anchored to the tissue, the pericardium lifting device passes through the motion component to reach the pericardium position, and when the pericardium lifting device performs an action, the movement trajectory of the pericardium lifting device is adjusted by the motion component.

15. Pericardial intervention system, characterized in that: include: Using the pericardium lifting device according to claim 14; A pericardial puncture device matched with the pericardial lifting device comprises a puncture member, which is movably installed in the innermost tube and has a puncture state moving toward the distal end. The puncture member in the puncture state is used to puncture the pericardium interacting with each anchor barb.

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