Punching device

Abstract

The invention relates to a tapping device. The tapping device comprises a shell, a rotating shaft, a tool bit and a rotating piece. The rotating shaft can axially and movably penetrate through the shell; the tool bit is arranged at the front end of the shell and fixedly connected with the front end of the rotating shaft. The rotating piece can rotate and can move in the axial direction of the rotating shaft, and the rotating piece comprises a built-in part and an outer rotating disc connected with the built-in part; wherein the built-in part is connected with the rear end of the rotating shaft, the outer rotating disc can drive the rotating shaft to rotate and move in the axial direction of the rotating shaft through the built-in part, and at least part of the outer rotating disc can be arranged on the periphery of the shell in a sleeving mode at least when the rotating piece moves in the direction close to the front end of the shell. Thus, the distance between the rotating piece and the front end of the cutter head is reduced, the overall length of the tapping device is reduced, the tapping device can be prevented from touching other organs such as the lung as much as possible when the tapping device conducts tapping operation on a target part, and the safety of an operation is improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and particularly to a punching device. Background Art

[0002] The heart assist device can effectively drain the blood in the ventricle into the aorta or pulmonary artery, promoting blood circulation, and has very important clinical value. In order to install the heart assist device, a punching device is needed to punch holes in the atrium or ventricle. However, the usual punching device is inconvenient to operate, and it is easy to touch other organs such as the lungs beside the heart during use, and it is difficult to be applicable to a narrow operation space. Summary of the Invention

[0003] Based on this, in view of the problem that the current punching device is easy to touch other organs and inconvenient to operate, it is necessary to provide a punching device with a small length, convenient operation, and capable of being applicable to a narrow operation space.

[0004] The present application provides a punching device, including:

[0005] A housing;

[0006] A rotating shaft, which is axially movably disposed through the housing;

[0007] A cutter head, which is disposed at the front end of the housing and fixedly connected to the front end of the rotating shaft; and

[0008] A rotating member, which can rotate and can axially move along the rotating shaft. The rotating member includes an inner part and an outer turntable connected to the inner part. Wherein, the inner part is connected to the rear end of the rotating shaft, and the outer turntable can drive the rotating shaft to rotate and axially move along the rotating shaft through the inner part. At least when the rotating member moves in the direction close to the front end of the housing, at least part of the outer turntable can be sleeved on the outer periphery of the housing.

[0009] In an embodiment of the present application, the outer turntable includes an annular body, the annular body is connected to the inner part, and the annular body can drive the rotating shaft to rotate and axially move along the rotating shaft through the inner part. The inner diameter of the annular body is greater than the outer diameter of the rear end of the housing, so that at least part of the annular body can be sleeved on the outer periphery of the housing when the outer turntable moves in the direction close to the front end of the housing.

[0010] In an embodiment of the present application, the outer turntable further includes a guiding part connected to the annular body. The guiding part extends axially along the rotating shaft from the front end of the annular body, and the guiding part can slide along the outer wall of the housing.

[0011] In an embodiment of the present application, the guiding portion is annular, and the guiding portion is slidably sleeved on the rear end of the housing; and / or, an anti-slip portion is provided on the outer wall of the ring body.

[0012] In an embodiment of the present application, a receiving gap for receiving the outer wall of the rear end of the housing is formed between the built-in portion and the outer turntable. When the rotating member moves in a direction close to the front end of the housing, the housing wall at the rear end of the housing can be received in the receiving gap.

[0013] In an embodiment of the present application, the rotating member further includes a connecting portion that connects the built-in portion and the outer turntable; a sliding groove extending along the axial direction of the rotating shaft is provided on the housing. When the rotating member moves in a direction close to the front end of the housing, the connecting portion can slide along the sliding groove.

[0014] In an embodiment of the present application, there are a plurality of connecting portions, and the plurality of connecting portions are arranged at intervals along the outer circumference of the built-in portion, and the corresponding sliding grooves are also a plurality;

[0015] and / or, the sliding groove extends along the axial direction of the rotating shaft from the end of the rear end of the housing, and the position of the sliding groove can correspond to the position of the connecting portion in the axial direction of the rotating shaft. When the rotating member moves in a direction close to the front end of the housing, the connecting portion can slide into the sliding groove and slide along the sliding groove.

[0016] In an embodiment of the present application, a clamping groove is provided on the housing, the clamping groove extends along the circumferential direction of the rotating shaft, the clamping groove communicates with the sliding groove, and after the connecting portion slides along the sliding groove, it can slide into the clamping groove and engage with the clamping groove.

[0017] In an embodiment of the present application, the housing has an activity cavity and an opening at the rear end of the housing, and the opening communicates with the activity cavity; the rotating shaft includes a shaft rod and a sliding member connected to the rear end of the shaft rod, at least part of the sliding member is received in the activity cavity, and the sliding member can slide along the cavity wall of the activity cavity. The sliding member is fixedly connected to the built-in portion, and at least one of the built-in portion and the sliding member can pass through the opening.

[0018] In an embodiment of the present application, a stop portion is provided at the rear end of the housing, the stop portion protrudes from the cavity wall of the activity cavity and encloses the opening, and one side of the sliding member facing away from the shaft rod can abut against the stop portion to prevent the rotating shaft from detaching from the activity cavity through the opening.

[0019] In an embodiment of the present application, the sliding member includes a first sliding portion and a second sliding portion. The first sliding portion is connected to the shaft rod, and the second sliding portion is connected to a side of the first sliding portion away from the shaft rod. The outer diameter of the first sliding portion is greater than the outer diameter of the second sliding portion. The first sliding portion can slide along the inner wall of the movable cavity. At least the second sliding portion is fixedly connected to the built-in portion, and at least one of the second sliding portion and the built-in portion can pass through the opening.

[0020] In an embodiment of the present application, the housing includes a shell body, a blade body, and a mounting seat connected between the shell body and the blade body. The blade body can cooperate with the blade head to clamp the target tissue. The mounting seat has a mounting hole, and the aperture of the mounting hole is smaller than the inner diameter of the shell body. The rotating shaft includes a shaft rod and a sliding member connected to the rear end of the shaft rod. The shaft rod passes through the mounting hole of the mounting seat and the blade body, and the rear end of the shaft rod is received in the shell body. The front end of the shaft rod is close to the front end of the blade body and is connected to the blade head. The sliding member is connected to the built-in portion. The opening device further includes an elastic member. The elastic member is sleeved on the shaft rod and is located in the shell body. Two ends of the elastic member respectively abut against the sliding member and the edge of the mounting hole of the mounting seat.

[0021] In an embodiment of the present application, the opening device further has at least one of the following features:

[0022] The opening device further includes a handle. The handle is rotatably mounted on the outer wall of the housing and can be unfolded or folded relative to the housing.

[0023] The front end of the blade head is a blade tip. The blade tip is conical, and the angle between the axis and the generatrix of the blade tip is θ, where 30° ≤ θ ≤ 60°.

[0024] The present application has at least the following technical effects:

[0025] The hole-opening device of the present application includes a housing, a rotating shaft, a cutter head and a rotating member, which is axially penetrated in the housing through the rotating shaft, and the cutter head is arranged at the front end of the housing and connected to the front end of the rotating shaft, so that the cutter head can extend into the target part and clamp the target tissue. On this basis, the built-in part of the rotating member is also connected to the rear end of the rotating shaft, so that the outer rotating disk can drive the cutter head to rotate through the rotating shaft to achieve cutting of the target tissue. Compared with the hole-opening device in which the rotating member is completely located outside the housing, the built-in part of the rotating member of the present application is connected to the rear end of the rotating shaft, and at least when the outer rotating disk moves in the direction close to the front end of the housing, at least part of the outer rotating disk can be sleeved on the outer periphery of the housing, which is not only convenient for operation, but also enables at least part of the rotating member to overlap with the housing in the axial direction, reducing the distance between the rotating member and the front end of the cutter head, thereby reducing the overall length of the hole-opening device. And the built-in part of the rotating member is connected to the rear end of the rotating shaft, and the cutter head is connected to the front end of the rotating shaft, so that the cutter head can move with the rotating member, that is, the movement of the rotating member will not increase the overall length of the hole-opening device. In this way, the hole-opening device can adapt to a narrow operating space, so that when the hole-opening device is operating on a target area (such as the right atrium), it can avoid touching other organs such as the lungs as much as possible, thereby improving the safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A diagram showing the location of the heart and lungs in the human body.

[0027] Figure 2 for Figure 1 Schematic diagram of the human heart shown.

[0028] Figure 3 This is a schematic diagram of a hole-opening device in an initial state according to an embodiment of the present application.

[0029] Figure 4 for Figure 3 Cross-sectional view along the AA direction.

[0030] Figure 5 for Figure 3 An exploded schematic diagram of the hole-opening device is shown.

[0031] Figure 6 for Figure 3 A schematic diagram of the hole opening device shown is in an extended state.

[0032] Figure 7 for Figure 6 Cross-sectional view along direction BB.

[0033] Figure 8 for Figure 3 Schematic diagram of the housing and mounting base of the hole opening device shown.

[0034] Figure 9 forFigure 3 Schematic diagram of the rotating shaft of the punching device shown

[0035] Figure 10 is Figure 3 Schematic diagram of the rotating part of the punching device shown from a perspective

[0036] Figure 11 is Figure 10 Schematic diagram of the rotating part shown from another perspective

[0037] Figure 12 is Figure 3 Top view of the punching device shown

[0038] Figure 13 is Figure 12 Cross-sectional view along the C-C direction

[0039] Wherein: H, heart; RA, right atrium; LA, left atrium; RV, right ventricle; LV, left ventricle; IAS, interatrial septum; HW, atrial wall; L, lungs; 100, punching device; 101, first fastener; 102, washer; 103, second fastener; 110, housing; 111, shell; 1110, movable cavity; 1111, opening; 1112, stop portion; 1114, chute; 1115, card slot; 112, mounting seat; 112a, mounting hole; 1121, mating portion; 1122, guiding surface; 1123, outer wall surface; 1125, first guide groove; 1126, first guiding surface; 1127, second guiding surface; 1128, bottom surface; 1129, lug; 113, blade body; 1131, second blade; 120, cutter head; 121, first blade; 122, blade tip; 130, rotating part; 130a, receiving gap; 131, connecting portion; 132, built-in portion; 133, outer turntable; 1331, ring body; 1332, guiding portion; 134, protruding portion; 135, anti-slip portion; 140, rotating shaft; 141, sliding member; 1410, back surface; 1411, groove; 1412, first sliding portion; 1413, second sliding portion; 1414, second guide groove; 142, shaft rod; 143, longitudinal section; 150, elastic member; 180, handle; 181, gripping portion; 182, rotating portion; 183, engaging portion; I, axis; II, generatrix Detailed implementation manner

[0040] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0041] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0042] In addition, if terms such as "first" and "second" appear, these terms are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if the term "plural" appears, the meaning of "plural" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0043] In the present application, unless otherwise clearly specified and limited, if terms such as "install", "connect", "join", "fix", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0044] In this application, unless otherwise clearly specified and defined, when a first feature is described as being "on" or "under" a second feature or the like, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0045] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0046] Please refer to Figure 1 and Figure 2 , in Figure 1 , the middle organ is the heart H, and on the left and right sides of the heart H are the lungs L. Figure 2 is a schematic diagram of the heart H, and the heart H has a right atrium RA, a left atrium LA, an interatrial septum IAS disposed between the right atrium RA and the left atrium LA, and an atrial wall HW.

[0047] Both the right atrium RA and the left atrium LA of the human heart H are relatively close to the lungs L, while the left ventricle LV and the right ventricle RV are at a certain distance from the lungs L. Before installing the heart assist device, it is necessary to use an opening device to make an opening at the corresponding position of the heart H. For example, before installing the left heart assist device, it is necessary to make an opening on the ventricular wall of the left ventricle LV. Since the left ventricle LV is at a certain distance from the lungs L, the operating space of a normal opening knife is relatively large, and it is easier to make an opening at the corresponding position of the heart H with the opening knife. However, since the right atrium RA is relatively close to the lungs L, the operating space of the opening knife is small, and it is easy to touch other organs such as the lungs L beside the heart H when using a normal opening knife, causing damage to other organs such as the lungs L. Therefore, it is difficult to apply a normal opening knife to the opening of the right atrium RA.

[0048] Refer to Figures 1 to 3, for this purpose, the present application provides a punching device 100. The punching device 100 can punch a target site. In this embodiment, the right atrium RA is taken as the target site, that is, the punching device 100 punches the atrial wall HW of the right atrium RA to facilitate the installation of a right heart assist device. Of course, in other embodiments of the present application, the punching device 100 can also be applied to punch other positions of the heart H (such as the atrial wall HW of the left atrium LA, the right ventricle RV, or the ventricular wall of the left ventricle LV) or other organs to meet the surgical needs. The following takes the punching of the right atrium RA by the punching device 100 as an example for description.

[0049] When the punching device 100 of the present application punches the right atrium RA, the punching device 100 can penetrate through the atrial wall HW of the right atrium RA and then extend into the right atrium RA to punch the right atrium RA. At the same time, it can avoid the punching device 100 from damaging the interatrial septum IAS.

[0050] The overall length of the punching device 100 of the present application is small, and the operation is convenient. It can punch a target site (such as the right atrium RA, hereinafter the right atrium RA is used to replace the target site) in a narrow space, can meet the requirements of punching the right atrium RA, and at the same time, can also avoid touching other organs such as the lungs L, improving the safety of the operation. The following introduces the specific structure of the punching device 100 in an embodiment.

[0051] Refer to Figure 3 and Figure 4 In an embodiment, the punching device 100 includes a housing 110, a cutter head 120, a rotating member 130, and a rotating shaft 140. The rotating shaft 140 is axially movably disposed through the housing 110. And the rotating shaft 140 can rotate. The cutter head 120 is disposed at the front end of the housing 110 and is fixedly connected to the front end of the rotating shaft 140. The rotating member 130 is connected to the rear end of the rotating shaft 140. The rotating member 130 can rotate, and further, the rotating member 130 can also axially move relative to the housing 110 along the rotating shaft 140. The rotating member 130 can drive the cutter head 120 to rotate and axially move through the rotating shaft 140. When the rotating member 130 axially moves along the rotating shaft 140, the rotating member 130 can drive the cutter head 120 to move relative to the housing 110 through the rotating shaft 140, so that the cutter head 120 extends or retracts relative to the housing 110.

[0052] The punching device 100 has an initial state (such as Figure 3 shown) and an extended state (such as Figure 6As shown). When the punching device 100 is in the initial state, at least a part of the cutter head 120 coincides with the housing 110 axially; when the punching device 100 is in the extended state, the cutter head 120 is spaced from the housing 110 by a certain distance. The rotating member 130 drives the cutter head 120 to rotate through the rotating shaft 140 to cut the target tissue. In a specific operation, first, the target tissue is clamped jointly by the cutter head 120 and the housing 110, and then the rotating member 130 is rotated to drive the cutter head 120 to rotate, so that the cutter head 120 can cut the target tissue.

[0053] Wherein, at least when the rotating member 130 moves towards the front end direction close to the housing 110, at least a part of the rotating member 130 can be sleeved on the outer periphery of the housing 110, so that at least a part of the rotating member 130 can coincide with the housing 110 axially along the rotating shaft 140, so as to reduce the distance between the rotating member 130 and the front end of the cutter head 120, and reduce the overall length of the punching device 100. In some embodiments, in the initial state and the extended state of the punching device 100, at least a part of the rotating member 130 is sleeved on the outer periphery of the housing 110. In some embodiments, in the initial state of the punching device 100, the rotating member 130 is not sleeved on the outer periphery of the housing 110; in the extended state, at least a part of the rotating member 130 is sleeved on the outer periphery of the housing 110.

[0054] Wherein, the rotating member 130 includes an inner built-in part 132 and an outer turntable 133 connected to the inner built-in part 132. The inner built-in part 132 is connected to the rear end of the rotating shaft 140, and the outer turntable 133 can drive the rotating shaft 140 to rotate and move axially along the rotating shaft 140 through the inner built-in part 132. At least when the rotating member 130 moves towards the front end close to the housing 110, at least a part of the outer turntable 133 can be sleeved on the outer periphery of the housing 110. In other words, at least when the punching device 100 is in the extended state, at least a part of the outer turntable 133 is sleeved on the outer periphery of the housing 110. That is, when the punching device 100 is in the extended state, at least a part of the outer turntable 133 can be sleeved on the outer periphery of the housing 110; and when the punching device 100 is in the initial state, at least a part of the outer turntable 133 can be sleeved on the outer periphery of the housing 110, or the outer turntable 133 can also not be sleeved on the outer periphery of the housing 110.

[0055] In this application, the "front end" is defined as the end far from the operator; the "rear end" is defined as the end close to the operator. The axial direction refers to the axis direction of the rotating shaft 140, the radial direction refers to the radius direction of the rotating shaft 140, and the circumferential direction refers to the circumferential direction of the rotating shaft 140. This axial direction, radial direction and circumferential direction are applicable to the punching device 100 and its various components, and will not be elaborated hereinafter. As Figure 3 shown, the length of the punching device 100 refers to the dimension of the punching device 100 along the axial direction.

[0056] Compared with the hole-opening device in which the rotating member is completely located outside the housing, in the hole-opening device 100 of the present application, the internal part 132 of the rotating member 130 is connected to the rear end of the rotating shaft 140, and at least when the rotating member 130 moves toward the front end of the housing 110, at least part of the outer turntable 133 can be sleeved on the outer periphery of the housing 110, which not only makes the diameter of the outer turntable 133 larger for easy operation, but also makes at least part of the rotating member 130 overlap with the housing 110 in the axial direction, reducing the distance between the rotating member 130 and the front end of the cutter head 120, thereby reducing the overall length of the hole-opening device 100. In addition, the internal part 132 of the rotating member 130 is connected to the rear end of the rotating shaft 140, and the cutter head 120 is connected to the front end of the rotating shaft 140, so that the cutter head 120 can move with the rotating member 130, that is, the movement of the rotating member 130 will not increase the overall length of the hole-opening device 100. In this way, the hole-opening device 100 can adapt to a narrow operating space. When performing a hole-opening operation on the right atrium RA, the hole-opening device 100 can avoid touching other organs such as the lungs L as much as possible, thereby improving the safety of the operation.

[0057] See also Figure 2 , Figure 4 and Figure 5 The shell 110 is the outer shell of the hole-opening device 100, and the cutter head 120 and the rotating member 130 are respectively located at opposite ends of the shell 110 in the axial direction. The cutter head 120 is a tool for cutting tissue, which can cut the target tissue to achieve a hole-opening operation, such as performing a hole-opening operation on the atrial wall HW of the right atrium RA. The rotating shaft 140 is rotatably and axially movable through the shell 110, and the opposite ends of the rotating shaft 140 in the axial direction are respectively connected to the rotating member 130 and the cutter head 120. The rotating member 130 drives the cutter head 120 to move synchronously through the rotating shaft 140. Specifically, the shell 110 has an active cavity 1110 and an opening 1111 located at the rear end of the shell 110, and the opening 1111 is connected to the active cavity 1110. The active cavity 1110 is connected to the outside through the opening 1111. The rotating shaft 140 is partially accommodated in the movable cavity 1110, and at least one of the rotating shaft 140 and the built-in part 132 can be inserted into the opening 1111. In this way, the movable stroke of the rotating member 130 in the axial direction can be increased without increasing the overall extension length of the hole-opening device 100, and the extension length of the cutter head 120 relative to the housing 110 is increased, so that the cutter head 120 and the housing 110 can cooperate to clamp a thicker target tissue, thereby expanding the application range of the hole-opening device 100. In this embodiment, the rotating shaft 140 and the built-in part 132 are both inserted into the opening 1111. In other embodiments, one of the rotating shaft 140 and the built-in part 132 is inserted into the opening 1111, and the other is not inserted into the opening 1111.

[0058] See also Figure 4 and Figure 5Specifically, the housing 110 includes a housing 111, a blade 113, and a mounting seat 112 connected between the housing 111 and the blade 113. The blade 113 and the housing 111 are disposed on opposite sides of the mounting seat 112. The rotating shaft 140 penetrates the housing 111, the mounting seat 112, and the blade 113, one end of the rotating shaft 140 is close to the end of the housing 111 away from the mounting seat 112, and is connected to the rotating member 130, and the other end of the rotating shaft 140 is close to the end of the blade 113 away from the mounting seat 112, and is connected to the cutter head 120.

[0059] The active cavity 1110 and the opening 1111 are located in the housing 111. The front end of the housing 111 is closed by the mounting seat 112, so that one end of the active cavity 1110 is closed and the other end is open.

[0060] The mounting seat 112 is a mounting carrier to realize the installation of the housing 111 and the blade 113. The mounting seat 112 has a mounting hole 112a, which is connected to the active cavity 1110. The rotating shaft 140 is rotatably and slidably disposed through the mounting hole 112a. The diameter of the mounting hole 112a is smaller than the inner diameter of the housing 111, that is, the diameter of the mounting hole 112a is smaller than the diameter of the active cavity 1110.

[0061] One end of the blade body 113 is connected to the mounting seat 112 , and the other end can cooperate with the blade head 120 to clamp the target tissue.

[0062] See also Figures 6 to 8 In one embodiment, a stopper 1112 is provided at the rear end of the housing 110, and the stopper 1112 can abut against the rear end of the shaft 140 to limit the position of the shaft 140 and prevent the shaft 140 from being separated from the housing 110 from the rear end of the housing 110. The stopper 1112 protrudes from the cavity wall of the active cavity 1110 and surrounds the opening 1111. Specifically, the stopper 1112 is provided at one end of the housing 111 away from the mounting seat 112. The stopper 1112 is provided at the edge of the housing 111 and extends toward the inner side of the housing 111.

[0063] In the embodiment of the present application, the stopper 1112 is a flange extending inwardly of the housing 111, and the stopper 1112 is annular. Of course, in other embodiments of the present application, the stopper 1112 may also be a plurality of protrusions, which are arranged at intervals around the rotating shaft 140 at the rear end of the housing 111, and the plurality of protrusions can abut against the rear end of the rotating shaft 140 to limit the rotating shaft 140 and prevent the rotating shaft 140 from being separated from the housing 111.

[0064] The rotating member 130 is a component for the operator to operate. The operator applies a rotating force and a thrust force to the rotating member 130 to achieve the rotation and movement of the rotating shaft 140. A receiving gap 130a for receiving the outer wall of the rear end of the housing 110 is formed between the inner part 132 and the outer turntable 133 of the rotating member 130. When the rotating member 130 moves towards the front end of the housing 110, the shell wall of the rear end of the housing 110 can be received in the receiving gap 130a, preventing interference between the rotating member 130 and the housing 110, so that at least a part of the rotating member 130 and the housing 110 can coincide axially in the extended state. Specifically, the shell at the end of the housing body 111 away from the mounting seat 112 can be received in the receiving gap 130a.

[0065] The rotating member 130 further includes a connecting portion 131. The connecting portion 131 connects the inner part 132 and the outer turntable 133 to achieve a fixed connection between the inner part 132 and the outer turntable 133. There is a preset distance between the outer turntable 133 and the inner part 132. The connecting portion 131 extends radially along the rotating shaft 140. The two ends of the connecting portion 131 are respectively connected to the inner part 132 and the outer turntable 133. This preset distance is the length of the connecting portion 131 in the radial direction of the rotating shaft 140. Specifically, there are multiple connecting portions 131, and the multiple connecting portions 131 are arranged at intervals along the outer circumference of the inner part 132. In this embodiment, the number of the connecting portions 131 is two, and the two connecting portions 131 are arranged at the two radial ends of the inner part 132. In other embodiments, the number of the connecting portions 131 can also be one, three or more than three. The specific number of the connecting portions 131 can be set according to the actual situation.

[0066] In one embodiment, the connecting portion 131 is generally rod-shaped. For example, the connecting portion 131 can be a round rod-shaped or square rod-shaped structure. In other embodiments, the cross-section of the connecting portion 131 can also have a structure similar to an "L" shape, that is, the connecting portion 131 can first extend axially for a certain distance from the rear end of the inner part 132 and then extend radially; or in some embodiments, the connecting portion 131 extends obliquely along the axial direction of the rotating shaft 140 or obliquely radially relative to the rotating shaft 140, or, in some embodiments, the connecting portion 131 is an annular or hollow disc-shaped structure, the connecting portion 131 has an inner ring and an outer ring, the inner ring of the connecting portion 131 is fixedly connected to the inner part 132, and the outer ring is fixedly connected to the outer turntable 133. The structure of the connecting portion 131 only needs to meet the purpose of the fixed connection between the inner part 132 and the outer turntable 133.

[0067] Among them, a chute 1114 extending along the axial direction of the rotating shaft 140 is formed on the outer shell 110. When the rotating member 130 moves towards the front end of the outer shell 110, the connecting portion 131 can slide along the chute 1114. In the illustrated embodiment, the chute 1114 extends along the axial direction of the rotating shaft 140 from the end of the rear end of the outer shell 110, that is, the chute 1114 penetrates through one end of the housing 111 facing the rotating member 130 and extends along the axial direction of the rotating shaft 140. The position of the chute 1114 can correspond to the position of the connecting portion 131 in the axial direction of the rotating shaft 140. When the rotating member 130 moves towards the front end of the outer shell 110, the connecting portion 131 can slide into the chute 1114 and slide along the chute 1114. When the punching device 100 is in the initial state, the connecting portion 131 is located outside the chute 1114, and the position of the connecting portion 131 corresponds to the position of the chute 1114 in the axial direction of the rotating shaft 140. When the rotating member 130 moves towards the front end of the outer shell 110, the connecting portion 131 slides along the chute 1114.

[0068] There are multiple chutes 1114 corresponding to the connecting portions 131, that is, the number of the chutes 1114 and the connecting portions 131 is equal, and each chute 1114 corresponds to one connecting portion 131, so that when the rotating member 130 moves towards the front end of the outer shell 110, each connecting portion 131 can slide along the corresponding chute 1114. It should be noted that when the connecting portion 131 does not block the movement of the rotating member 130 towards the front end of the outer shell 110, for example, when the connecting portion 131 is in an "L" shape, extends obliquely with respect to the axial direction of the rotating shaft 140, is annular or a hollow disk-shaped structure, the outer shell 110 may not be provided with the chute 1114. Enabling the connecting portion 131 to slide along the chute 1114 can, on the one hand, realize the connection between the built-in portion 132 and the outer turntable 133 while avoiding the limitation of the axial movement distance of the rotating shaft 140 caused by the existence of the connecting portion 131. On the other hand, the sliding of the connecting portion 131 along the chute 1114 can also play a certain guiding role in the axial movement of the rotating member 130. And compared with the annular or hollow disk-shaped connecting portion 131, connecting the built-in portion 132 and the outer turntable 133 through multiple spaced connecting portions 131 can reduce the weight of the punching device 100 to a certain extent.

[0069] The chute 1114 is not limited to the above structure. In some embodiments, the chute 1114 may not penetrate through one end of the housing 111 facing the rotating member 130, that is, the chute 1114 is a closed groove body. At this time, in order to facilitate the rotation of the rotating member 130 to drive the rotation of the rotating shaft 140 to achieve the cutting purpose, an extension groove extending circumferentially may be provided on the rear end of the outer housing 110. That is, in some embodiments, the connecting portion 131 penetrates through the chute 1114 in the radial direction of the rotating shaft 140, and the connecting portion 131 can abut against the rear end wall of the chute 1114 to prevent the rotating member 130 from separating from the outer housing 110. An extension groove extending circumferentially along the outer housing 110 is provided on the rear end of the outer housing 110, and the extension groove communicates with the end of the rear end of the chute 1114, and the connecting portion 131 can also slide along the extension groove.

[0070] Specifically, the outer turntable 133 includes a ring body 1331, and the ring body 1331 is connected to the built-in portion 132. Specifically, the connecting portion 131 is fixedly connected to the ring body 1331 and the built-in portion 132 respectively. The operator can apply a rotational force and a thrust to the ring body 1331 to achieve the rotation and movement of the rotating shaft 140. The ring body 1331 can drive the rotating shaft 140 to rotate and move axially along the rotating shaft 140 through the built-in portion 132. The inner diameter of the ring body 1331 is larger than the outer diameter of the rear end of the outer housing 110, so that when the outer turntable 133 moves in the direction close to the front end of the outer housing 110, at least a part of the ring body 1331 can be sleeved on the outer periphery of the outer housing 110. The central axis of the ring body 1331 coincides with the central axis of the rotating shaft 140, so that when the outer turntable 133 moves in the direction close to the front end of the outer housing 110 and rotates relative to the outer housing 110, the outer turntable 133 will not deviate from the central axis of the rotating shaft 140, thereby making the movement of the outer turntable 133 smoother and improving the accuracy of the hole opening of the hole opening device 100.

[0071] Please refer to Figure 6 and Figure 12 , in one embodiment, the outer wall of the ring body 1331 is provided with an anti-slip portion 135, and the anti-slip portion 135 can be used for the operator to hold. The provision of the anti-slip portion 135 can reduce the rotation slip of the rotating member 130 and improve the reliability of the operation.

[0072] In this embodiment, the anti-slip portion 135 is an anti-slip protrusion. Further, the number of the anti-slip portions 135 is multiple, and the multiple anti-slip portions 135 are arranged at intervals along the circumferential direction of the rotating member 130. Of course, in other embodiments of the present application, the anti-slip portion 135 may also be an anti-slip stripe, an anti-slip groove, etc.

[0073] The outer turntable 133 further includes a guiding portion 1332 connected to the ring body 1331. The guiding portion 1332 extends axially along the rotating shaft 140 from the front end of the ring body 1331. The guiding portion 1332 can slide along the outer wall of the housing 110. The provision of the guiding portion 1332 can guide the rotating member 130 when the rotating member 130 moves axially, making the movement of the rotating member 130 smoother.

[0074] In the illustrated embodiment, the guiding portion 1332 is annular, and the guiding portion 1332 is slidably sleeved on the rear end of the housing 110. In other words, in the initial state of the hole-opening device 100, the guiding portion 1332 is sleeved on the rear end of the housing 110. On the one hand, the guiding portion 1322 can better guide the rotating member 130 to move axially along the housing 110, ensuring that the rotating member 130 can move smoothly and accurately towards the front end of the housing 110 and avoiding dislocation. On the other hand, the guiding portion 1332 is sleeved on the rear end of the housing 110, and at least part of the rotating member 130 always coincides with the housing 110 axially, reducing the distance between the rotating member 130 and the front end of the cutter head 120, and thus reducing the overall length of the hole-opening device 100.

[0075] The guiding portion 1332 is coaxially arranged with the ring body 1331, and the central axis of the ring body 1331 coincides with the central axis of the rotating shaft 140. Thus, the guiding portion 1332 is also coaxially arranged with the rotating shaft 140. The inner wall of the guiding portion 1332 is attached to the outer wall of the rear end of the housing 110 to guide the movement and rotation of the rotating member 130, facilitating the smooth movement and rotation of the rotating member 130 relative to the housing 110, and thus facilitating the smooth movement and rotation of the cutter head 120. Specifically, the guiding portion 1332 is slidably sleeved on the end of the housing 111 away from the mounting seat 112; the inner wall of the guiding portion 1332 is attached to the outer wall of the housing 111. In other embodiments, the guiding portion 1332 can also be a plurality of extension portions that surround the outer periphery of the front end of the housing 110 and extend axially. The plurality of extension portions are spaced apart, and the plurality of extension portions can slide axially along the outer wall of the housing 110.

[0076] Please refer to Figure 2 、 Figures 7 to 9 As shown in FIGS. [specific figure numbers], the rotating shaft 140 includes a shaft rod 142 and a sliding member 141 connected to the rear end of the shaft rod 142. The shaft rod 142 is rotatably passed through the mounting seat 112 and the tool body 113, and the rear end of the shaft rod 142 is received in the housing 111. The front end of the shaft rod 142 is close to the front end of the tool body 113 and is connected to the cutter head 120. Specifically, the shaft rod 142 is passed through the mounting hole 112a of the mounting seat 112; the rear end of the shaft rod 142 is received in the moving cavity 1110.

[0077] The slider 141 is disposed at one end of the shaft 142; the end of the shaft 142 facing away from the slider 141 extends out of the blade body 113 and is connected to the cutter head 120. The slider 141 is fixedly connected to the inner part 132 of the rotating member 130. Specifically, the slider 141 is located at the end of the housing 111 facing away from the mounting seat 112 and is connected to the inner part 132. The slider 141 is at least partially received in the movable cavity 1110, and the slider 141 can slide along the cavity wall of the movable cavity 1110. That is, the slider 141 is slidably disposed in the housing 111 and can slide along the inner wall of the housing 111. At least one of the inner part 132 and the slider 141 can pass through the opening 1111. The side of the slider 141 facing away from the shaft 142 can abut against the stop portion 1112 to limit the rotation shaft 140 and prevent the rotation shaft 140 from disengaging from the movable cavity 1110 through the opening 1111.

[0078] In this embodiment, the slider 141 and the shaft 142 are of an integral structure to improve the connection strength between the slider 141 and the shaft 142. In other embodiments, the slider 141 and the shaft 142 can be independent structures, and the two can be connected by welding or bonding.

[0079] In the illustrated embodiment, the slider 141 has a back surface 1410 facing away from the cutter head 120, and the back surface 1410 can abut against the stop portion 1112 to limit the slider 141 and prevent the rotation shaft 140 from escaping from the movable cavity 1110 through the opening 1111.

[0080] In one embodiment, the slider 141 includes a first sliding portion 1412 and a second sliding portion 1413. The first sliding portion 1412 is connected to the shaft 142, and the second sliding portion 1413 is connected to the side of the first sliding portion 1412 away from the shaft 142. The outer diameter of the first sliding portion 1412 is greater than the outer diameter of the second sliding portion 1413. The first sliding portion 1412 can slide along the cavity wall of the movable cavity 1110. At least the second sliding portion 1413 is fixedly connected to the inner part 132, and at least one of the second sliding portion 1413 and the inner part 132 can pass through the opening 1111. Among them, the first sliding portion 1412 can abut against the stop portion 1112 to limit the rotation shaft 140 and prevent the rotation shaft 140 from disengaging from the movable cavity 1110 through the opening 1111. Specifically, the surface of the first sliding portion 1412 close to the second sliding portion 1413 is the back surface 1410.

[0081] Specifically, the first sliding part 1412 is slidably arranged in the housing 111, and the outer peripheral surface of the first sliding part 1412 is in sliding fit with the inner wall of the housing 111. The outer peripheral surface of the first sliding part 1412 is connected to the back surface 1410. The second sliding part 1413 and the first sliding part 1412 are of an integral structure. The rotating shaft 140 is connected to the built-in part 132 of the rotating member 130 through the second sliding part 1413. The second sliding part 1413 is fixedly connected to the built-in part 132 of the rotating member 130, such as by screw connection, welding, etc.

[0082] When the rotating member 130 drives the sliding member 141 and the shaft rod 142 to move axially, the sliding of the sliding member 141 along the cavity wall of the moving cavity 1110 can guide the movement of the cutter head 120, prevent the cutter head 120 from moving radially, so that the cutter head 120 can accurately open a hole at the target site and avoid deviation as much as possible. When the rotating member 130 moves axially along the rotating shaft 140, the cutter head 120 extends or retracts relative to the tool body 113. The extension of the cutter head 120 relative to the tool body 113 can make the cutter head 120 extend into the right atrium RA. When the cutter head 120 extending into the right atrium RA retracts relative to the tool body 113, the cutter head 120 can cooperate with the tool body 113 to clamp the target tissue. After clamping the target tissue, by rotating the rotating member 130, the sliding member 141 can be driven to rotate along the inner wall of the housing 111, and then the shaft rod 142 can drive the cutter head 120 to rotate synchronously to realize the cutting of the target tissue.

[0083] A first cutting edge 121 is provided at the rear end of the cutter head 120, that is, the first cutting edge 121 is arranged at one end of the cutter head 120 facing the outer shell 110. The cutter head 120 and the outer shell 110 jointly clamp the target tissue through the first cutting edge 121. Specifically, the first cutting edge 121 can jointly clamp the target tissue with the tool body 113. The first cutting edge 121 is annular. A second cutting edge 1131 is provided at the front end of the tool body 113. The first cutting edge 121 and the second cutting edge 1131 can cooperate to clamp the target tissue. Specifically, when the rotating member 130 drives the cutter head 120 to extend and then retract relative to the tool body 113 through the rotating shaft 140, the first cutting edge 121 can cooperate with the second cutting edge 1131 of the tool body 113 to clamp the target tissue, which is convenient for subsequent cutting of the target tissue by rotating the cutter head 120.

[0084] Please continue to refer to Figures 2 to 4In one embodiment, the maximum distance from the rear end of the rotating member 130 to the front end of the cutter head 120 is h, that is, the axial length of the hole-opening device 100 along the rotating shaft 140 is h, and the maximum diameter of the first blade 121 is d, wherein 3≤h / d≤5. When the dimensional relationship between the overall length of the hole-opening device 100 and the first blade 121 is within the above range, the length of the hole-opening device 100 can be shortened as much as possible on the basis of the maximum diameter of the first blade 121 being unchanged, so that the hole-opening device 100 can be applied to a narrow operating space. When h / d<3, the length of the hole-opening device 100 is too short and inconvenient for cutting operation; when h / d>5, the length of the hole-opening device 100 will be increased, resulting in the hole-opening device 100 being unable to be applied to a narrow operating space and being prone to touching other organs such as the lungs L.

[0085] In one embodiment, the front end of the blade head 120 is a blade tip 122, that is, the blade tip 122 is disposed at the end of the blade head 120 that is away from the housing 111. Figure 3 and Figure 4 In the figure, the bottom of the blade head 120 is a blade tip 122, and the blade head 120 pushes open the atrial wall HW of the right atrium RA through the blade tip 122, and then extends into the right atrium RA.

[0086] In one embodiment, the blade tip 122 is conical, and the angle between the axis I of the blade tip 122 and the generatrix II is θ, wherein 30°≤θ≤60°. Since the thickness of the atrial wall HW is thinner than the thickness of the ventricular wall, the blade tip 122 does not need to be too sharp, and the blade head 120 can be pushed open the atrial wall HW of the right atrium RA. When the angle θ between the axis I and the generatrix II of the conical blade tip 122 satisfies the above range (30°≤θ≤60°), the length of the blade head 120 can be shorter on the basis of the maximum diameter of the first blade 121 being unchanged, so as to avoid the blade head 120 from damaging the atrial septum IAS as much as possible. When θ is less than 30°, the blade tip 122 will be too sharp and easily hit the atrial septum IAS. When θ is greater than 60°, the length of the blade tip 122 is too short to cut the atrial wall HW, and it is not convenient for the blade head 120 to extend into the right atrium RA.

[0087] See also Figure 2 , Figures 5 to 7 In one embodiment, the hole opening device 100 further includes an elastic member 150. The elastic member 150 is sleeved on the rotating shaft 140 and accommodated in the housing 110, and the two ends of the elastic member 150 are respectively in contact with the housing 110 and the rotating shaft 140. The elastic member 150 can provide an elastic force to the rotating shaft 140, and the elastic force can make the blade head 120 connected to the rotating shaft 140 have a tendency to move toward the housing 110, and can make the blade head 120 cooperate with the front end of the housing 110 to clamp the target tissue.

[0088] After the elastic member 150 is provided in the punching device 100, due to the elastic force provided by the elastic member 150, when the punching device 100 is in the initial state, the cutter head 120 can be adjacent to the front end of the housing 110. When the punching device 100 is in the extended state, if there is no external force, the cutter head 120 can move towards the housing 110 under the action of the elastic force.

[0089] In the illustrated embodiment, the elastic member 150 is sleeved on the shaft rod 142 and is located within the housing 111. The two ends of the elastic member 150 respectively abut against the sliding member 141 and the mounting seat 112. Specifically, the end of the elastic member 150 remote from the sliding member 141 abuts against the edge of the mounting hole 112a of the mounting seat 112. When the rotating member 130 is pushed to extend the cutter head 120 relative to the blade body 113, the sliding member 141 acts on the elastic member 150, causing the elastic member 150 to deform and be compressed between the sliding member 141 and the mounting seat 112. When the rotating member 130 is released, since the position of the mounting seat 112 is fixed, the mounting seat 112 can provide support for the elastic member 150. The elastic member 150 deforms and returns to provide an elastic force. The elastic force of the elastic member 150 can push the sliding member 141 to slide away from the mounting seat 112. The shaft rod 142 slides with the sliding member 141 to drive the cutter head 120 to move towards the blade body 113, so that the cutter head 120 retracts relative to the blade body 113. Specifically, the end of the elastic member 150 remote from the mounting seat 112 abuts against the side of the sliding member 141 facing away from the stop portion 1112. More specifically, the end of the elastic member 150 remote from the mounting seat 112 abuts against the side of the first sliding portion 1412 facing away from the second sliding portion 1413.

[0090] The elastic force provided by the elastic member 150 when it returns can push the sliding member 141, causing the cutter head 120 to retract towards the blade body 113, so that the punching device 100 returns to the initial state. At this time, the rotating shaft 140, the cutter head 120 and the rotating member 130 are all in the initial positions. When the elastic force of the elastic member 150 pushes the sliding member 141 back to the initial position, the stop portion 1112 abuts against the sliding member 141, which can limit the position of the rotating shaft 140 and prevent the rotating shaft 140 from detaching from the housing 110 under the action of the reset elastic force of the elastic member 150. When the rotating member 130 drives the cutter head 120 to extend through the rotating shaft 140, the rotating member 130 can overcome the resistance of the elastic member 150 and press against the elastic member 150 through the sliding member 141 to compress the elastic member 150. At this time, the sliding member 141 drives the cutter head 120 to extend through the shaft rod 142, and the punching device 100 is in the extended state.

[0091] After the blade head 120 is inserted into the right atrium RA, the rotating member 130 can be released to reset the elastic member 150. The elastic force generated by the recovery of the elastic member 150 can push the sliding member 141 to reset, and then the sliding member 141 drives the shaft 142, the blade head 120 and the rotating member 130 to return to the initial position, so that the blade head 120 can be retracted relative to the housing 111, and then the target tissue can be clamped between the blade head 120 and the housing 111, so that the target tissue can be cut by the blade head 120 later. Optionally, the elastic member 150 is a spring, an elastic sleeve, etc.

[0092] In order to keep the cutter head 120 in the extended state, the rotating member 130 can be engaged with the housing 111. After the rotating member 130 drives the cutter head 120 to extend through the rotating shaft 140, the rotating member 130 is rotated so that the rotating member 130 is engaged in the housing 111, thereby keeping the cutter head 120 in the extended state. In this way, after the operator engages the rotating member 130 with the housing 111, the cutter head 120 remains in the extended state, and the cutter head 120 can be extended into the right atrium RA, preventing the elastic force of the elastic member 150 from resetting the rotating member 130 and the cutter head 120.

[0093] Since the end of the elastic member 150 away from the sliding member 141 needs to abut against the mounting seat 112, and the rotating shaft 140 needs to pass through the mounting seat 112, the aperture of the mounting hole 112a is set to be smaller than the diameter of the movable cavity 1110, so that the edge of the mounting hole 112a can provide support for the end of the elastic member 150 away from the sliding member 141, and at the same time, the mounting hole 112a can allow the rotating shaft 140 to pass through.

[0094] In order to facilitate the assembly of the hole-opening device 100 of the above structure, at least the housing 111 and the mounting seat 112 are separate structures. By setting the shell 111 and the mounting seat 112 as a split structure, when assembling the rotating shaft 140, the outer shell 110, and the elastic member 150, the rear end of the rotating shaft 140 can be first inserted into the shell 111 (or the movable cavity 1110) from the front end of the shell 111, and the rear end of the rotating shaft 140 (specifically the sliding member 141) is abutted against the stopper 1112 to prevent the rotating shaft 140 from escaping from the rear end of the shell 111 (i.e., the opening 1111), and then the elastic member 150 is sequentially sleeved on the rotating shaft 140, the rotating shaft 140 is inserted into the mounting hole 112a of the mounting seat 112, and the shell 111 is fixedly connected to the mounting seat 112, so that the rotating shaft 140 and the elastic member 150 are both upper-limited to the shell 111, thereby realizing the assembly of the rotating shaft 140, the outer shell 110, and the elastic member 150.

[0095] Of course, when assembling the elastic member 150, the elastic member 150 is not limited to being installed on the rotating shaft 140 after the rotating shaft 140 is inserted into the housing 111, and can also be sleeved on the rotating shaft 140 before the rotating shaft 140 is inserted into the housing 111. Among them, the housing 111 can be fixed to the mounting seat 112 by means of fasteners, threaded connection, etc. The blade body 113 can be set separately from the mounting seat 112, or it can be an integrated structure with the mounting seat 112. When the blade body 113 and the mounting seat 112 are separate structures, they can be connected by fasteners or fixed together by means of threaded connection.

[0096] See also Figure 2 , Figures 6 to 8 In one embodiment, the housing 110 is provided with a slot 1115, which extends along the circumference of the rotating shaft 140 and is connected to the slide slot 1114. Specifically, the slot 1115 is connected to an end of the slide slot 1114 that is away from the rotating member 130. The connecting portion 131 can slide along the slide slot 1114, slide into the slot 1115, and engage with the slot 1115, thereby achieving the engagement between the rotating member 130 and the housing 111.

[0097] That is to say, when the rotating member 130 drives the cutter head 120 to extend, the connecting portion 131 can first move axially along the slide groove 1114, and then the rotating member 130 is rotated, and the connecting portion 131 moves radially, so that the connecting portion 131 moves from the slide groove 1114 into the slot 1115, so as to realize the locking connection between the rotating member 130 and the shell 111, so that the cutter head 120 remains in an extended state.

[0098] The connection part 131 cooperates with the slot 1115 to prevent the axial movement of the rotating member 130, thereby fixing the position of the rotating member 130 and keeping the cutter head 120 in the extended state. After the cutter head 120 is extended into the right atrium RA, the rotating member 130 is rotated in the reverse direction to disengage the connection part 131 from the engagement limit of the slot 1115, that is, to release the engagement between the rotating member 130 and the housing 111. The elastic force of the elastic member 150 returns the rotating member 130 to the initial position, thereby driving the cutter head 120 to retract relative to the housing 111.

[0099] See also Figure 9 and Figure 11, in one embodiment, a protrusion 134 is provided on one of the side of the built-in part 132 facing the rotating shaft 140 and the rear end of the rotating shaft 140, and a groove 1411 is provided on the other. The protrusion 134 is at least partially received in the groove 1411. When the rotating member 130 is assembled with the rotating shaft 140, the protrusion 134 is at least partially received in the groove 1411. On the one hand, it positions the rotating member 130 and the rotating shaft 140, enabling the rotating member 130 and the rotating shaft 140 to be quickly aligned, facilitating the subsequent fixation of the rotating member 130 and the rotating shaft 140. On the other hand, when the rotating member 130 and the rotating shaft 140 are fastened, there is no relative sliding between them, further facilitating the fixation of the rotating member 130 and the rotating shaft 140.

[0100] In this embodiment, one side of the built-in part 132 facing the sliding member 141 has a protrusion 134, and one side of the sliding member 141 facing the built-in part 132 has a groove 1411 opposite to the protrusion 134. The protrusion 134 is installed in the groove 1411 to achieve the positioning of the rotating member 130 and the sliding member 141. Of course, in other embodiments of the present application, it may also be that the surface of the built-in part 132 facing the sliding member 141 has a groove 1411, and the surface of the sliding member 141 facing the built-in part 132 has a protrusion 134 opposite to the groove 1411.

[0101] In this embodiment, the protrusion 134 and the groove 1411 are arc-shaped. Of course, in other embodiments of the present application, the protrusion 134 and the groove 1411 may also be other shapes, as long as the positioning of the rotating member 130 and the rotating shaft 140 can be achieved.

[0102] In this embodiment, the number of both the protrusion 134 and the groove 1411 is two to improve the positioning accuracy of the rotating member 130 and the sliding member 141. Of course, in other embodiments of the present application, the number of the protrusion 134 and the groove 1411 may also be one, three or other numbers, which can be specifically set according to the actual situation.

[0103] Please refer to Figure 9 、 Figure 11 and Figure 12 , in one embodiment, the opening device 100 further includes a first fastener 101, and the first fastener 101 fixedly connects the rotating shaft 140 and the rotating member 130. After the rotating member 130 and the rotating shaft 140 are positioned by the protrusion 134 and the groove 1411, the rotating member 130 and the rotating shaft 140 are fixedly connected by the first fastener 101, improving the reliability of the connection between the rotating member 130 and the rotating shaft 140. Optionally, the first fastener 101 can be a bolt. Specifically, the first fastener 101 fixedly connects the sliding member 141 and the built-in part 132.

[0104] Refer to Figure 4 、 Figure 7 andFigure 8 In one embodiment, the surface of the mounting seat 112 facing the rotating member 130 has a first guide groove 1125. The elastic member 150 is located in the housing 111. The elastic member 150 is sleeved on the rotating shaft 140 and is located between the sliding member 141 and the mounting seat 112. The front end of the elastic member 150 is located in the first guide groove 1125, and the rear end of the elastic member 150 abuts against the sliding member 141. In this way, the first guide groove 1125 can align the front end of the elastic member 150, prevent the elastic member 150 from being eccentric, minimize the torsional deformation of the elastic member 150 and affect its elastic effect, and also enable the cutter head 120 to extend or retract smoothly relative to the cutter body 113. Specifically, the elastic member 150 is sleeved on the shaft rod 142 and is located between the first sliding portion 1412 and the mounting seat 112.

[0105] In one embodiment, the first guide groove 1125 is provided with a first guide surface 1126, a second guide surface 1127, and a bottom surface 1128 connecting the first guide surface 1126 and the second guide surface 1127. The front end of the elastic member 150 abuts against the bottom surface 1128. Among them, the bottom surface 1128 is a plane, the second guide surface 1127 surrounds the first guide surface 1126, and both the first guide surface 1126 and the second guide surface 1127 are inclined relative to the bottom surface 1128. And along the direction from the front end to the rear end, the distance between the first guide surface 1126 and the second guide surface 1127 gradually increases, so that both the first guide surface 1126 and the second guide surface 1127 have a guiding effect. In this way, the first guide surface 1126 and the second guide surface 1127 can align the elastic member 150, avoid the elastic member 150 deviating from its central axis as much as possible during the deformation process, thereby minimizing the torsion of the elastic member 150 and affecting the elastic effect, and also enabling the cutter head 120 to extend or retract smoothly relative to the cutter body 113.

[0106] In one embodiment, a second guide groove 1414 is provided on the side of the first sliding portion 1412 facing away from the second sliding portion 1413. The second guide groove 1414 is arranged around the shaft rod 142 and can accommodate the rear end of the elastic member 150. Along the direction from the front end to the rear end, the inner diameter of the second guide groove 1414 gradually decreases, so that the second guide groove 1414 is generally conical, to align the rear end of the elastic member 150, further avoid the elastic member 150 deviating from its central axis during the deformation process, and thus minimize the torsional deformation of the elastic member 150 and affect its elastic effect.

[0107] Refer to Figure 6 and Figure 7, in one embodiment, the hole-opening device 100 further includes a washer 102. The washer 102 is sleeved on the rotating shaft 140 and fits the outer peripheral surface of the rotating shaft 140. The washer 102 is also at least partially fixed between the mounting base 112 and the blade body 113. For example, the mounting base 112 and the blade body 113 can be fixedly connected by screws, and there is a gap between them to accommodate at least part of the structure of the washer 102. When the mounting base 112 and the blade body 113 are fixed, at least part of the washer 102 can be fixed between the mounting base 112 and the blade body 113. Specifically, the washer 102 is sleeved on the shaft rod 142 and fits the outer peripheral surface of the shaft rod 142.

[0108] The washer 102 fits the outer peripheral surface of the shaft rod 142, realizing the positioning of the rotating shaft 140, avoiding the yaw of the shaft rod 142 during the movement, effectively preventing the collision between the rotating shaft 140 and the mounting base 112, and reducing the damage to the rotating shaft 140. In this embodiment, the washer 102 is a plastic part. Plastic has the characteristics of insulation, corrosion resistance, heat insulation, non-magnetic properties, light weight, and has a long service life and low cost. It can also effectively play a role in positioning the rotating shaft 140, avoiding the yaw of the rotating shaft 140 during the movement, preventing the collision or friction between the rotating shaft 140 and the mounting base 112, so as to improve the service life of the rotating shaft 140 and eliminate the noise caused by friction or collision at the same time. In other embodiments, the washer 102 can also be made of acrylic material, rubber material or other materials, as long as it can achieve the purpose of protecting the rotating shaft 140.

[0109] In one embodiment, the hole-opening device 100 further includes a second fastener 103. The mounting base 112 and the blade body 113 are separately arranged, and the mounting base 112 and the blade body 113 are fixedly connected by the second fastener 103. In this embodiment, since the mounting base 112 and the blade body 113 are separately arranged, at least part of the structure of the washer 102 can be arranged between the mounting base 112 and the blade body 113 first, and then the mounting base 112 and the blade body 113 are fixedly connected by the second fastener 103, so that at least part of the washer 102 can be fixed between the mounting base 112 and the blade body 113 to realize the installation of the washer 102. Optionally, the second fastener 103 is a screw.

[0110] Refer to Figure 3 , Figure 12 and Figure 13 , in one embodiment, the hole-opening device 100 further includes a handle 180. The handle 180 is rotatably mounted on the outer wall of the housing 110 and can be unfolded or folded relative to the housing 110. In Figure 3 , the handle 180 is folded relative to the housing 110. In Figure 13In [description], the handle 180 is unfolded relative to the housing 110. The connection between the handle 180 and the housing 110 is located between the rotating member 130 and the cutter head 120, so that the handle 180 does not rotate with the rotating member 130 or the cutter head 120. Thus, while holding the handle 180, the operator can also rotate the rotating member 130 to drive the cutter head 120 to rotate, which further facilitates the operation of the hole-opening device 100.

[0111] In the illustrated embodiment, the handle 180 is rotatably mounted on the outer wall surface of the mounting seat 112. In other embodiments, the handle 180 can also be mounted on the housing 111 or the blade body 113, which can be specifically set according to the actual situation.

[0112] When the handle 180 needs to be used, the handle 180 can be unfolded. At this time, the operator can hold the handle 180 with one hand and push and rotate the rotating member 130 with the other hand. When the handle 180 does not need to be used, the handle 180 can be retracted. At this time, the handle 180 is retracted on the side of the housing 110, reducing the space occupied by the hole-opening device 100, which is beneficial to the storage and transportation of the hole-opening device 100.

[0113] In one embodiment, the handle 180 includes a holding portion 181, a rotating portion 182, and a engaging portion 183. The rotating portion 182 and the engaging portion 183 are connected to the same side of the holding portion 181. The holding portion 181 is used for the operator's holding operation; the rotating portion 182 is rotatably connected to the mounting seat 112; the engaging portion 183 can engage with the housing 110.

[0114] The housing 110 is provided with a mating portion 1121. The mating portion 1121 is disposed on the outer peripheral surface of the mounting seat 112 and is located on the rotation path of the engaging portion 183, so that when the engaging portion 183 rotates relative to the handle 180 to be unfolded relative to the housing 111, it can engage with the mating portion 1121.

[0115] In one embodiment, the holding portion 181 and the engaging portion 183 are of an integral structure. In this way, the structural strength of the handle 180 can be improved, which is convenient for the handle 180 to switch between unfolding and retracting. Of course, in other embodiments of the present application, the holding portion 181 and the engaging portion 183 can also be separately provided. For example, they can be connected by welding or bonding. In one embodiment, the engaging portion 183 is provided in a hook shape.

[0116] One end of the holding portion 181 is a free end, and the other end away from the free end is connected to the rotating portion 182 and the engaging portion 183. When the handle 180 rotates relative to the mounting seat 112, its engaging portion 183 can engage with the mating portion 1121 to limit the engaging portion 183, thereby stopping the further rotation of the handle 180 and keeping the handle 180 in an unfolded state for the operator to hold.

[0117] Refer toFigure 8 , Figure 12 and Figure 13 , the mounting base 112 has an outer wall surface 1123. The engaging portion 1121 protrudes from the outer wall surface 1123 and extends toward the cutter head 120, such that there is a certain distance between the engaging portion 1121 and the outer wall surface 1123 of the mounting base 112. The end of the engaging portion 1121 is bent toward the outer wall surface 1123 to form a hook. When the handle 180 is rotated and opened, the engaging portion 183 can be engaged with the hook to limit the engaging portion 183 and keep the engaging portion 183 in an unfolded state.

[0118] When the handle 180 is not needed, a large external force is applied to the handle 180 to enable the engaging portion 183 to overcome the blocking force of the engaging portion 1121, and then the engaging portion 183 is separated from the engaging portion 1121. At this time, the handle 180 can rotate freely relative to the housing 111, and then the handle 180 can be folded up to reduce the occupied space of the opening device 100, facilitating the storage and transportation of the opening device 100.

[0119] Refer to Figure 8 and Figure 13 , in an embodiment, one side of the engaging portion 1121 facing away from the outer wall surface 1123 has a guiding surface 1122, and the guiding surface 1122 can abut against the engaging portion 183 to guide the engaging portion 183 to slide to the inside of the hook. When the handle 180 is being unfolded, the engaging portion 183 can abut against the guiding surface 1122 and slide along the guiding surface 1122, and the guiding surface 1122 can guide the engaging portion 183 to slide and be engaged with the hook.

[0120] In this embodiment, the guiding surface 1122 is an arc surface. The arc surface can guide the sliding of the engaging portion 183, facilitating the snap-fit between the engaging portion 183 and the engaging portion 1121. Of course, in other embodiments of the present application, the guiding surface 1122 can also be an inclined surface.

[0121] In other embodiments, the engaging portion 183 can be a snap, and the engaging portion 1121 can be a snap groove provided on the outer wall surface 1123. When the handle 180 rotates relative to the mounting base 112, the snap can be engaged with the snap groove to limit the snap, thereby stopping the further rotation of the handle 180.

[0122] In an embodiment, the number of the rotating portions 182 is two, the engaging portion 183 is located between the two rotating portions 182, the mounting base 112 has two lugs 1129 protruding from the outer wall surface 1123, the two lugs 1129 are respectively rotatably connected to the two rotating portions 182, and the engaging portion 1121 is located between the two lugs 1129 for the engaging portion 183 to engage. In this way, the rotating portion 182 can rotate around the lug 1129, facilitating the opening and folding of the handle 180 and the snap connection between the engaging portion 183 and the engaging portion 1121.

[0123] The two rotating parts 182 are located on opposite sides of the engaging part 183. Each rotating part 182 corresponds to a lug 1129, and each rotating part 182 is rotatably connected to the corresponding lug 1129. In this way, when the handle 180 rotates relative to the mounting base 112, the rotating part 182 can be driven to rotate around the lug 1129 by rotating the holding part 181, so that the engaging part 183 is engaged or disengaged with the mating part 1121, realizing the opening and closing of the handle 180.

[0124] Please refer to Figure 1 、 Figure 2 and Figure 13 For the working process of the hole-opening device 100 of the present application: First, a cross incision is made on the right atrium RA by a common cutting tool currently. Then, the operator can push the rotating part 130 to move relative to the housing 111. At this time, the rotating part 130 compresses the elastic part 150 through the sliding part 141, so that the cutter head 120 extends relative to the cutter body 113. Then, rotate the rotating part 130 to engage the rotating part 130 with the housing 111 to maintain the extended state of the cutter head 120. Or, first, the operator can push the rotating part 130 to move relative to the housing 111 to make the cutter head 120 extend relative to the cutter body 113, and rotate the rotating part 130 to engage the rotating part 130 with the housing 111 to maintain the extended state of the cutter head 120.

[0125] Subsequently, align the cutter head 120 with the cross incision on the right atrium RA and insert the cutter head 120 into the right atrium RA. Then, rotate the rotating part 130 to disengage the rotating part 130 from the housing 111. The elastic part 150 resets and pushes the rotating part 130 to reset, thereby driving the cutter head 120 to retract. At this time, the target tissue is clamped between the first cutting edge 121 and the second cutting edge 1131. Then, rotate the rotating part 130 to cut the target tissue. The cut target tissue remains in the space between the cutter head 120 and the cutter body 113. Finally, take out the hole-opening device 100 from the body, and the cut target tissue is taken out together to complete the hole-opening operation of the right atrium RA.

[0126] In the hole-opening device 100 of the present application, the internal part 132 is connected to the rear end of the rotating shaft 140, and at least when the rotating member 130 moves toward the front end of the housing 110, at least part of the rotating member 130 can be sleeved on the outer periphery of the housing 111, which is not only convenient for operation, but also enables at least part of the rotating member 130 to overlap with the housing 111 in the axial direction of the rotating shaft 140, thereby reducing the distance between the rotating member 130 and the front end of the cutter head 120, thereby reducing the overall length of the hole-opening device 100, and enabling the hole-opening device 100 to operate in a narrow space. In this way, when the hole-opening device 100 is operated on the right atrium RA, it can avoid touching other organs such as the lungs L as much as possible, thereby improving the safety of the operation.

[0127] At the same time, the cutter head 120 is kept in an extended state by the engagement between the rotating member 130 and the housing 111. The rotating member 130 is reset by the elastic member 150 after the engagement is released, so that the cutter head 120 is retracted relative to the housing 111. In addition, a handle 180 is rotatably mounted on the housing 110, and the handle 180 can be unfolded or retracted relative to the housing 110. When the handle 180 is unfolded relative to the housing 110, it is convenient for people to hold it. When the handle 180 is retracted relative to the housing 110, it can reduce the occupied space of the hole-making device 100, which is convenient for the storage and transportation of the hole-making device 100.

[0128] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0129] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, 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. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An opening device, characterized in that, Comprising: A housing; A rotating shaft that is axially movably disposed through the housing; A cutter head disposed at the front end of the housing and fixedly connected to the front end of the rotating shaft; and A rotating member that is rotatable and axially movable along the rotating shaft. The rotating member includes an inner portion and an outer turntable connected to the inner portion. Wherein, the inner portion is connected to the rear end of the rotating shaft, and the outer turntable can drive the rotating shaft to rotate and axially move along the rotating shaft through the inner portion. At least when the rotating member moves towards the front end of the housing, at least a part of the outer turntable can be sleeved on the outer periphery of the housing.

2. The hole-opening device according to claim 1, characterized in that, The outer turntable includes an annular body connected to the inner portion. The annular body can drive the rotating shaft to rotate and axially move along the rotating shaft through the inner portion. The inner diameter of the annular body is greater than the outer diameter of the rear end of the housing, so that at least a part of the annular body can be sleeved on the outer periphery of the housing when the outer turntable moves towards the front end of the housing.

3. The punching device according to claim 2, characterized in that, The outer turntable further includes a guiding portion connected to the annular body. The guiding portion extends axially along the rotating shaft from the front end of the annular body, and the guiding portion can slide along the outer wall of the housing.

4. The punching device according to claim 3, wherein The guiding portion is annular and can be slidably sleeved on the rear end of the housing; and / or, an anti-slip portion is provided on the outer wall of the annular body.

5. The hole-opening device according to claim 1, wherein A receiving gap for receiving the outer wall of the rear end of the housing is formed between the inner portion and the outer turntable. When the rotating member moves towards the front end of the housing, the shell wall of the rear end of the housing can be received in the receiving gap.

6. The punching device according to claim 1, wherein The rotating member further includes a connecting portion connecting the inner portion and the outer turntable; a sliding groove extending axially along the rotating shaft is formed on the housing. When the rotating member moves towards the front end of the housing, the connecting portion can slide along the sliding groove.

7. The hole-opening device according to claim 6, wherein There are multiple connecting portions, and the multiple connecting portions are spaced apart along the outer periphery of the inner portion. The corresponding sliding grooves are multiple; and / or, the sliding groove extends axially from the end of the rear end of the housing, and the position of the sliding groove can correspond to the position of the connecting portion axially on the rotating shaft. When the rotating member moves towards the front end of the housing, the connecting portion can slide into the sliding groove and slide along the sliding groove.

8. The punching device according to claim 6, characterized in that, A clamping groove is formed on the housing, and the clamping groove extends circumferentially along the rotating shaft. The clamping groove is communicated with the sliding groove. After the connecting portion slides along the sliding groove, it can slide into the clamping groove and engage with the clamping groove.

9. The opening device according to claim 1, characterized in that, The housing has an activity cavity and an opening at the rear end of the housing. The opening is communicated with the activity cavity; the rotating shaft includes a shaft rod and a sliding member connected to the rear end of the shaft rod. At least a part of the sliding member is received in the activity cavity, and the sliding member can slide along the cavity wall of the activity cavity. The sliding member is fixedly connected to the inner portion, and at least one of the inner portion and the sliding member can pass through the opening.

10. The punching device according to claim 9, characterized in that, A stop portion is provided at the rear end of the housing. The stop portion protrudes from the wall of the movable cavity and encloses the opening. The side of the sliding member facing away from the shaft can abut against the stop portion to prevent the rotating shaft from detaching from the movable cavity through the opening.

11. The opening device according to claim 9, characterized in that, The sliding member includes a first sliding portion and a second sliding portion. The first sliding portion is connected to the shaft. The second sliding portion is connected to the side of the first sliding portion away from the shaft. The outer diameter of the first sliding portion is larger than that of the second sliding portion. The first sliding portion can slide along the wall of the movable cavity. At least the second sliding portion is fixedly connected to the built-in portion, and at least one of the second sliding portion and the built-in portion can pass through the opening.

12. The opening device according to claim 1, characterized in that, The housing includes a housing body, a blade body, and a mounting seat connected between the housing body and the blade body. The blade body can cooperate with the blade head to clamp the target tissue. The mounting seat has a mounting hole, and the diameter of the mounting hole is smaller than the inner diameter of the housing body. The rotating shaft includes a shaft and a sliding member connected to the rear end of the shaft. The shaft passes through the mounting hole of the mounting seat and the blade body, and the rear end of the shaft is received in the housing body. The front end of the shaft is close to the front end of the blade body and is connected to the blade head. The sliding member is connected to the built-in portion. The opening device further includes an elastic member. The elastic member is sleeved on the shaft and is located in the housing body. The two ends of the elastic member respectively abut against the sliding member and the edge of the mounting hole of the mounting seat.

13. The punching device according to any one of claims 1-12, characterized in that, The opening device further has at least one of the following features: The opening device further includes a handle. The handle is rotatably mounted on the outer wall of the housing and can be unfolded or folded relative to the housing. The front end of the blade head is a blade tip. The blade tip is conical. The angle between the axis and the generatrix of the blade tip is θ, where 30° ≤ θ ≤ 60°.

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