Pericardium opening device

Abstract

The application discloses a pericardial opening device. The pericardium opening device comprises a conveying pipe, a mounting seat and a shearing assembly which are connected with one another, a first channel connected with the conveying pipe is arranged on the mounting base, and the shearing assembly is provided with a shearing end and an operating end which are connected; the shearing end enters the conveying pipe along the first channel and extends to the end, away from the mounting base, of the conveying pipe. An opening matched with the shearing end is formed in the end, away from the mounting base, of the conveying pipe. The conveying pipe further communicates with an adsorption assembly. The adsorption assembly is used for generating negative pressure in the conveying pipe so as to suck at least part of the to-be-sheared tissue into the opening; the shearing end is adjacent to the opening and is used for shearing the to-be-sheared tissue entering the opening under the control of the operating end. By the adoption of the pericardium opening device, an operator can conveniently cut out operation openings of different sizes in the pericardium opening operation, and the pericardium opening device can conveniently meet different operation requirements.

Description

Technical Field

[0001] The present application relates to the technical field of interventional surgical instruments, and in particular to a pericardial opening device. Background Art

[0002] Entering the epicardial space is the cornerstone of many cardiac interventional surgeries. For example, epicardial radiofrequency ablation refers to an interventional treatment method that enters the epicardial space for mapping and ablation through pericardial puncture. The main route is to puncture the pericardium percutaneously under the xiphoid process or at the apex of the heart to establish an operating channel, through which the catheter enters the pericardial cavity for epicardial mapping and ablation. Similarly, this technology is applicable to any other type of supraventricular arrhythmia that requires epicardial ablation after failure of radiofrequency ablation via the endocardial route, such as premature atrial contractions, atrial tachycardia, atrial flutter, and atrioventricular bypass. Other rare applications include: transepicardial left atrial appendage occlusion, esophageal protection, and epicardial pacing electrode implantation, but they may have bright prospects in the future. In particular, radiofrequency ablation treatment for atrial fibrillation has developed rapidly in recent years, and currently accounts for more than half of the entire interventional treatment of arrhythmias. The success rate of initial ablation is about 70-80%, and at least 10% of recurrent patients are related to epicardial lesions, so active epicardial intervention is required.

[0003] The pericardium is a layer of connective tissue membrane structure tightly wrapped around the heart. When performing extracardiac ablation surgery, a path must be made manually through a pericardial puncture needle to make a passage in the pericardium that is close to the outer wall of the heart, so that the ablation device can pass through the passage to enter between the outer wall of the heart and the pericardium for ablation. However, in existing solutions, when a puncture needle is used to form a passage for pericardial ablation, the opening formed is usually very small, which is not suitable for more complex surgical requirements. Summary of the invention

[0004] In order to solve the defects of the prior art, the purpose of the present application is to provide a pericardial opening device to solve at least one of the above-mentioned technical problems.

[0005] In order to achieve the above objectives, a technical solution adopted in the present application is to provide a pericardial opening device, the pericardial opening device comprising:

[0006] Connected delivery pipes, mounting bases and shear assemblies;

[0007] The mounting seat is provided with a first channel connected to the delivery pipe, and the shearing assembly has a shearing end and an operating end connected to each other;

[0008] The shearing end enters the delivery pipe along the first passage and extends to the end of the delivery pipe away from the mounting seat;

[0009] Wherein, an opening matching the shearing end is provided at the end of the delivery pipe away from the mounting seat; the delivery pipe is also connected to an adsorption component;

[0010] The adsorption component is used to generate negative pressure in the conveying tube to suck at least part of the tissue to be sheared into the opening; the shearing end is arranged adjacent to the opening and is used to shear the tissue to be sheared entering the opening under the manipulation of the operating end.

[0011] Optionally, one end of the delivery tube away from the mounting seat is a transparent joint, and the opening is formed in the transparent joint.

[0012] Optionally, the surface of the transparent joint is provided with an anti-stick coating, and the anti-stick coating is used to prevent tissue or tissue fluid from adhering to the surface of the transparent joint.

[0013] Optionally, the shearing end extends at least partially into the transparent joint, and the shearing end does not extend beyond the opening.

[0014] Optionally, an arcuate surface is provided at the end of the transparent joint, and the opening is opened on the arcuate surface.

[0015] Optionally, the opening includes a first opening portion away from the mounting seat and a second opening portion connected to the first opening portion;

[0016] The first opening portion is extended to the edge of the arc-shaped surface;

[0017] The opening size of the second opening portion gradually decreases in a direction away from the first opening portion, and the shape of the second opening portion matches the maximum expansion state of the shearing end.

[0018] Optionally, a second channel is opened on the mounting seat, and a lighting lens is arranged in the second channel. The lighting lens extends along the second channel to an end of the delivery pipe away from the mounting seat and does not exceed the opening;

[0019] The illumination lens is used for emitting illumination light and for acquiring an image of an end of the delivery tube away from the mounting seat.

[0020] Optionally, the lighting lens is fixedly mounted in the second channel in an adjustable position;

[0021] The shearing assembly is fixedly mounted on the first channel in an adjustably positionable manner.

[0022] Optionally, a sealing ring is provided between the shearing assembly and the first channel, the sealing ring being located on the sealing ring and sleeved on the shearing assembly;

[0023] The shearing assembly is configured to be rotatable along a rotation axis parallel to the axial direction of the first channel as a rotation center.

[0024] Optionally, the mounting seat is further provided with a third channel connected to the delivery tube, and the third channel is used for allowing a set interventional instrument to enter and extend to the transparent joint.

[0025] The present application provides a pericardial opening device. In the scheme of the present application, by using an adsorption component to suck the tissue to be sheared into the opening, and by using the shearing end located in the opening to perform the shearing operation, it is possible to cut a surgical incision on the tissue to be sheared. And by adjusting the opening size of the shearing end, it is possible to cut surgical incisions of different sizes, which can be convenient for matching different surgical needs. In addition, compared to the puncture scheme, the scheme of forming a surgical incision by shearing with the shearing end in this embodiment has a smoother opening edge of the surgical incision, which is more convenient for suturing the pericardium after the subsequent operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an embodiment of a pericardial opening device provided by the present application;

[0027] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the pericardial opening device shown;

[0028] Figure 3 yes Figure 1 An axial cross-sectional view of the pericardial opening device along the first channel;

[0029] Figure 4 yes Figure 1 Left view of the pericardial opening device shown;

[0030] Figure 5 yes Figure 4 A schematic diagram of the shear end in the bag opening device II region when closed;

[0031] Figure 6 yes Figure 4 Schematic diagram of the shear end in the bag opening device II area when it is opened. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full 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 violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one 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.

[0035] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature 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, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0038] See also Figure 1-Figure 3 , Figure 1 It is a structural schematic diagram of an embodiment of a pericardial opening device provided by the present application; Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the pericardial opening device shown; Figure 3 yes Figure 1 The pericardial opening device is shown in an axial cross-sectional view along the first channel. Figure 3 The pericardial opening device shown conceals the operating end of the shearing assembly.

[0039] The pericardial opening device 10 can be cut on the pericardium to form a surgical opening, thereby facilitating subsequent surgical equipment to enter the pericardium through the surgical opening to perform surgical treatment on lesions on the surface of the heart.

[0040] The pericardial opening device 10 includes: a delivery tube 110 , a mounting seat 120 and a shearing assembly 130 which are connected to each other.

[0041] In this embodiment, a first channel 1201 connected to the delivery tube 110 is provided on the mounting seat 120, and the shearing assembly 130 has a shearing end 131 and an operating end 132 connected to each other; the shearing end 131 enters the delivery tube 110 along the first channel 1201 and extends to the end of the delivery tube 110 away from the mounting seat 120; wherein, an opening 101 matching the shearing end 131 is provided at the end of the delivery tube 110 away from the mounting seat 120; the delivery tube 110 is also connected to an adsorption assembly (not shown in the figure); the adsorption assembly is used to generate negative pressure in the delivery tube 110 to suck at least part of the tissue to be sheared into the opening 101; the shearing end 131 is arranged adjacent to the opening 101, and is used to shear the tissue to be sheared entering the opening 101 under the operation of the operating end 132.

[0042] Therefore, in the solution of this embodiment, by using the adsorption component to suck the tissue to be sheared into the opening 101, and by using the shearing end 131 located in the opening 101 to perform the shearing operation, it is possible to cut a surgical incision on the tissue to be sheared. And by adjusting the opening size of the shearing end 131, it is possible to cut surgical incisions of different sizes, which can be convenient for matching different surgical needs. In addition, compared with the puncture solution, the solution of using the shearing end 131 to perform shearing to form a surgical incision in this embodiment has a smoother opening edge of the surgical incision, which is more convenient for suturing the pericardium after the subsequent operation.

[0043] Please read further Figure 1 and Figure 3 .

[0044] In this embodiment, the delivery tube 110 is a sheath tube, and the delivery tube 110 includes a transparent joint 111 and a connecting tube 112 connected to each other, wherein the transparent joint 111 is fixedly installed at one end of the connecting tube 112, and the other end of the connecting tube 112 is fixedly connected to the mounting seat 120 and communicated with the first channel 1201.

[0045] Among them, the opening 101 is opened on the transparent joint 111. By setting the transparent joint 111 to be transparent, it is convenient to observe the state of the tissue to be cut and the cutting state of the cutting end 131 in real time when the cutting operation is performed through the cutting end 131, thereby improving the accuracy of the cutting operation, reducing the difficulty of the operation, and reducing the operation time.

[0046] Among them, optionally, an anti-stick coating is provided on the surface of the transparent joint 111, and the anti-stick coating is used to prevent tissue or tissue fluid from sticking to the surface of the transparent joint, thereby reducing the risk of tissue and tissue fluid on its surface sticking to the surface of the transparent joint after the transparent joint 111 enters the tissue. Therefore, after the transparent joint 111 enters the tissue, it can be ensured that the opening position can be quickly and accurately found through the transparent joint 111.

[0047] Preferably, an illumination lens can be provided in the delivery tube 110, wherein the illumination lens can emit illumination light to the transparent joint 111, and at the same time, the illumination lens can also be used to obtain an image of the transparent joint 111 area, and the illumination lens can establish a communication connection with an external display device, so that the image obtained by the illumination lens can be displayed through the external display device. The advantage of this solution is that the surgical operator can observe the image of the transparent joint 111 area in real time through the external display device, thereby improving the difficulty of the pericardial opening surgery and improving the safety of the surgery.

[0048] For more details, please refer to Figure 3 .

[0049] In this embodiment, a second channel 1202 is opened on the mounting seat 120, and an illumination lens 122 is arranged in the second channel 1202. The illumination lens 122 extends along the second channel 1202 to the end of the conveying tube 110 away from the mounting seat 120 and is not arranged beyond the opening 101; the illumination lens 122 is used to emit illumination light and to obtain an image of one end of the transparent joint 111.

[0050] Optionally, the first channel 1201 and the second channel 1202 may be two parallel channels, and both are connected to the delivery pipe 110 .

[0051] Furthermore, in this embodiment, the cutting end 131 extends to at least partially enter the transparent joint 111, and the cutting end 131 does not exceed the opening 111. That is, in the solution of the present application, the cutting end 131 only cuts the tissue entering the opening 111, thereby further improving the safety of the operation.

[0052] In this embodiment, an arc surface 112 is provided at the end of the transparent joint 111, and the opening 101 is opened on the arc surface 112. The arc surface 112 is configured to be smooth and flat so as not to cause damage to tissues.

[0053] For further information, see Figure 2 and Figure 4-Figure 6 . Figure 4 yes Figure 1 Left view of the pericardial opening device shown; Figure 5 yes Figure 4 A schematic diagram of the shear end in the bag opening device II region when closed; Figure 6 yes Figure 4 The schematic diagram of the shear end in the bag opening device II area when it is opened. Figure 4 The pericardial opening device shown conceals the operating end of the shearing assembly.

[0054] In this embodiment, the opening 101 includes a first opening 1011 away from the mounting seat 120 and a second opening 1012 connected to the first opening 1011; the edge of the first opening 1011 is extended to the edge of the arc surface 102; the opening size of the second opening 1012 in the direction away from the first opening 1011 is gradually reduced, and the shape of the second opening 1012 matches the maximum expansion state of the shearing end 131. In this solution, the edge of the first opening 1011 is extended to the edge of the arc surface 102 to ensure that the opening 101 is large enough to allow tissue of sufficient size to enter; the shape of the second opening 1012 is matched with the maximum expansion state of the shearing end 131, which can cover the shearing end 131 and prevent the shearing end 131 from protruding out of the opening 101. Moreover, the tissue sucked into the second opening 1012 can be matched with the shearing end 131 under the influence of the opening shape, so that the tissue can be cut more conveniently.

[0055] The connection between the first opening 1011 and the second opening 1012 is smoothly connected.

[0056] For further information, see Figure 1 , Figure 3 and Figure 4 .

[0057] In this embodiment, a first interface 121 is further provided on the side wall of the mounting seat 120, wherein the first interface 121 can be connected to the inside of the delivery tube 110 through the mounting seat 120, and the first interface 121 can be used to connect to an external negative pressure suction device, so that the delivery tube 110 can be vacuumed, so that the tissue to be sheared can be adsorbed and partially enter the opening 101.

[0058] In this embodiment, the lighting lens 122 is tubular in shape as a whole, and a fixing mechanism 123 is provided on the mounting seat 120 , wherein the fixing mechanism 123 includes a fixing plate 1231 and a top rod 1232 connected to the fixing plate 1231 .

[0059] The top rod 1232 can be screwed with the mounting seat 120, and the fixing piece 1231 can be moved toward or away from the tube body of the lighting lens 122 by rotating the top rod 1232. The portion of the lighting lens 122 in the second channel 1202 can be pressed against the second channel 1202 by using the top rod 1232, so that the position of the lighting lens 122 can be fixed. By loosening and pressing the portion of the lighting lens 122 in the second channel 1202 against the second channel 1202 by using the top rod 1232, the operator can adjust the position of the lighting lens 122 near one end of the transparent joint 111 by pulling the lighting lens 122, so as to facilitate finding the best lighting and image acquisition position of the lighting lens 122.

[0060] Furthermore, in this embodiment, the shearing assembly 130 is also fixedly mounted on the mounting seat 120 .

[0061] The fixed position of the shearing assembly 130 is adjustably mounted on the first channel 1201. In one embodiment, the shearing assembly 130 can also be provided with the fixing mechanism 123 as described above to adjust the fixed position of the shearing assembly 130. In some other embodiments, a thread can be further provided on the tube body of the shearing assembly 130, and the position of the shearing end 131 of the shearing assembly 130 can be adjusted by screwing the tube body of the shearing assembly 130 with the mounting seat 120 and rotating the shearing assembly 130.

[0062] Furthermore, in this embodiment, the operating end 132 may be a pressing handle, and by pressing the operating end 132, the opening and closing of the cutting end 131 may be controlled to achieve a cutting action. The position and orientation of the cutting end 131 in the transparent joint 111 are fixed.

[0063] In some other embodiments, the operating end 132 can be optionally provided separately from the mounting seat 120. In this solution, the shearing assembly 130 can be rotated along its axis as the rotation center to adjust the shearing direction of the shearing end 131. In this solution, a sealing ring 133 can be provided in the first channel 1201, and the sealing ring 133 is provided in the gap between the first channel 1201 and the tube body of the shearing assembly 130, so that the delivery tube 110 can be prevented from leaking at the first channel 1201, and the negative pressure adsorption effect in the delivery tube 110 can be ensured.

[0064] The operating end 132 may also be fixedly connected to the mounting base 120 , thereby improving the stability and reliability of the entire mechanism.

[0065] Furthermore, in this embodiment, a third channel (not shown) can also be provided on the mounting seat 120 , wherein the third channel is also connected to the delivery tube 110 , and the third channel can be used for the entry of a set interventional instrument and extend to the transparent joint 111 .

[0066] In this embodiment, the interventional instrument may be a sampling device such as a sampling forceps or a catheter, or may also be a clamp or a scissors for interventional surgery, or other devices to assist the surgery.

[0067] In summary, the present application provides a pericardial opening device. In the scheme of the present application, by using an adsorption component to suck the tissue to be sheared into the opening, and by using the shearing end located in the opening to perform the shearing operation, it is possible to cut a surgical incision on the tissue to be sheared. And by adjusting the opening size of the shearing end, it is possible to cut surgical incisions of different sizes, which can be convenient for matching different surgical needs. In addition, compared to the puncture scheme, the scheme of forming a surgical incision by shearing with the shearing end in this embodiment has a smoother opening edge of the surgical incision, which is more convenient for suturing the pericardium after the subsequent operation.

[0068] The above-described embodiments are merely illustrative of the present application, rather than all embodiments. The present application may also be implemented in other specific ways or other specific forms without departing from the gist or essential features of the present application. Therefore, the described embodiments should be considered illustrative rather than restrictive in any respect. The scope of the present application should be described by the attached claims, and any changes equivalent to the intent and scope of the claims should also be included in the scope of the present application.

Claims

1. A pericardial opening device, characterized in that: The pericardial opening device comprises: Connected delivery pipes, mounting bases and shear assemblies; The mounting seat is provided with a first channel connected to the delivery pipe, and the shearing assembly has a shearing end and an operating end connected to each other; The shearing end enters the delivery pipe along the first passage and extends to the end of the delivery pipe away from the mounting seat; Wherein, an opening matching the shearing end is provided at the end of the delivery pipe away from the mounting seat; the delivery pipe is also connected to an adsorption component; The adsorption component is used to generate negative pressure in the delivery tube to suck at least part of the tissue to be sheared into the opening; the shearing end is arranged adjacent to the opening and is used to shear the tissue to be sheared entering the opening under the manipulation of the operating end.

2. The pericardial opening device according to claim 1, characterized in that: One end of the delivery tube away from the mounting seat is a transparent joint, and the opening is arranged at the transparent joint.

3. The pericardial opening device according to claim 2, characterized in that: The surface of the transparent joint is provided with an anti-stick coating, and the anti-stick coating is used to prevent tissue or tissue fluid from sticking to the surface of the transparent joint.

4. The pericardial opening device according to claim 2, characterized in that: The shearing end extends at least partially into the transparent joint, and the shearing end does not extend beyond the opening.

5. The pericardial opening device according to claim 2, characterized in that: The end of the transparent joint is provided with an arc surface, and the opening is opened on the arc surface.

6. The pericardial opening device according to claim 5, characterized in that: The opening includes a first opening portion away from the mounting seat and a second opening portion connected to the first opening portion; The first opening portion is extended to the edge of the arc-shaped surface; The opening size of the second opening portion gradually decreases in a direction away from the first opening portion, and the shape of the second opening portion matches the maximum expansion state of the shearing end.

7. The pericardial opening device according to any one of claims 1 to 6, characterized in that: A second channel is provided on the mounting seat, and a lighting lens is provided in the second channel. The lighting lens extends along the second channel to an end of the delivery pipe away from the mounting seat and does not exceed the opening; The illumination lens is used for emitting illumination light and for acquiring an image of an end of the delivery tube away from the mounting seat.

8. The pericardial opening device according to claim 7, characterized in that: The lighting lens is fixedly mounted in the second channel in an adjustable position; The shearing assembly is fixedly mounted on the first channel in an adjustably positionable manner.

9. The pericardial opening device according to claim 7, characterized in that: A sealing ring is provided between the shearing assembly and the first channel, the sealing ring being located on the sealing ring and sleeved on the shearing assembly; The shearing assembly is configured to be rotatable along a rotation axis parallel to the axial direction of the first channel as a rotation center.

10. The pericardial opening device according to claim 2, characterized in that: The mounting seat is also provided with a third channel connected to the delivery tube, and the third channel is used for allowing a set interventional instrument to enter and extend to the transparent joint.

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