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] This application relates to the technical field of interventional surgical instruments, and particularly to a pericardial opening device. Background Art

[0002] Access to the epicardial space is the cornerstone of many cardiac interventional procedures. For example, epicardial radiofrequency ablation is an interventional treatment method that involves pericardiocentesis to enter the epicardial space for mapping and ablation. The main path is to puncture the pericardium percutaneously under the xiphoid process or at the apex of the heart to establish an operation channel. The catheter then enters the pericardial cavity through this channel for epicardial mapping and ablation. Similarly, this technique is applicable to any type of supraventricular arrhythmia that requires epicardial ablation after failure of endocardial ablation, such as premature atrial contractions, atrial tachycardia, atrial flutter, and atrioventricular bypass tracts. Another currently less common application includes epicardial left atrial appendage occlusion, esophageal protection, and implantation of epicardial pacing electrodes, etc., but the future application prospects may be bright. Especially in recent years, the radiofrequency ablation treatment of atrial fibrillation has developed rapidly and currently accounts for more than half of the entire interventional treatment of arrhythmias. The success rate of the first ablation is about 70-80%, and at least 10% of the recurrent patients are related to epicardial lesions. Therefore, active epicardial intervention is required.

[0003] The pericardium is a layer of connective tissue membrane structure that tightly wraps around the heart. During epicardial ablation surgery, it is necessary to artificially create a passage through the pericardium close to the outer wall of the heart using a pericardiocentesis needle so that the ablation device can enter the space between the outer wall of the heart and the pericardium through this passage for ablation. However, in the existing solutions, when using a puncture needle to create a passage for pericardial ablation, the opening formed is usually very small and not suitable for relatively complex surgical requirements. Summary of the Invention

[0004] To solve the defects existing in the prior art, the purpose of this application is to provide a pericardial opening device to solve at least one of the above technical problems.

[0005] To achieve the above object, a technical solution adopted by this application is: to provide a pericardial opening device, the pericardial opening device includes:

[0006] A delivery tube, a mounting seat, and a shearing assembly connected to each other;

[0007] A first channel connecting the delivery tube is provided on the mounting seat, and the shearing assembly has a shearing end and an operating end connected to each other;

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

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

[0010] The adsorption assembly is used to generate a negative pressure in the delivery tube to suck at least a part of the tissue to be sheared into the opening; the shearing end is disposed 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, an anti-sticking coating is provided on the surface of the transparent joint, and the anti-sticking coating is used to prevent tissue or tissue fluid from sticking to the surface of the transparent joint.

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

[0014] Optionally, an arc surface is provided at the end of the transparent joint, and the opening is formed in the arc 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 extends to the edge of the arc surface;

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

[0018] Optionally, a second channel is formed in the mounting seat, and an illumination lens is disposed in the second channel. The illumination lens extends along the second channel to one end of the delivery tube away from the mounting seat and does not extend beyond the opening;

[0019] The illumination lens is used to emit illumination light and is used to acquire an image of one end of the delivery tube away from the mounting seat.

[0020] Optionally, the illumination lens is fixedly and adjustably mounted in the second channel;

[0021] The shearing assembly is fixedly and adjustably mounted in the first channel.

[0022] Optionally, a sealing ring is disposed between the shearing assembly and the first channel. The sealing ring is located in the sealing ring and sleeved on the shearing assembly;

[0023] The shearing assembly is configured to be able to rotate about a rotation axis parallel to the axis direction of the first channel as a rotation center.

[0024] Optionally, a third channel for connecting the delivery tube is further provided on the mounting base. The third channel is used for a set of intervention instruments to enter and extend to the transparent joint.

[0025] The present application provides a pericardial opening device. In the solution of the present application, by using an adsorption component to suck a part of the tissue to be sheared into the opening and performing a shearing operation through a shearing end located in the opening, a surgical opening can be cut out on the tissue to be sheared. And by adjusting the opening size of the shearing end, surgical openings of different sizes can be cut out, which is convenient for matching different surgical requirements. In addition, compared with the puncture solution, in this embodiment, the solution of forming a surgical opening by using a shearing end for shearing treatment forms a surgical opening with a smoother opening edge, which is more convenient for suturing the pericardium after the operation. Description of the Drawings

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

[0027] Figure 2 is Figure 1 a three-dimensional structural diagram of the pericardial opening device shown;

[0028] Figure 3 is Figure 1 an axial sectional view of the pericardial opening device shown along the first channel;

[0029] Figure 4 is Figure 1 a left view of the pericardial opening device shown;

[0030] Figure 5 is Figure 4 a schematic diagram of the shearing end in the II region of the pericardial opening device shown when it is closed;

[0031] Figure 6 is Figure 4 a schematic diagram of the shearing end in the II region of the pericardial opening device shown when it is open. Detailed Description of the Embodiment

[0032] In order to make the above objects, features, and advantages of the present application more obvious and understandable, the following detailed description of the specific embodiments of the present application will be made with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand 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.

[0033] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present application.

[0034] In addition, the terms "first" and "second" are only used 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, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0035] In the present application, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed broadly. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of 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.

[0036] In the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely 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 be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0037] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When 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. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0038] Please refer to Figures 1 - 3 , Figure 1 which is a schematic structural diagram of an embodiment of a pericardial opening device provided by the present application; Figure 2 is Figure 1 a three-dimensional structural diagram of the pericardial opening device shown; Figure 3 is Figure 1 an axial sectional view of the pericardial opening device shown along the first channel. Among them, Figure 3 the operation end of the shearing component is hidden in the pericardial opening device shown.

[0039] The pericardial opening device 10 can cut a surgical opening in the pericardium, and then facilitate subsequent surgical devices to enter the pericardium through the surgical opening for surgical treatment of the lesions on the surface of the heart.

[0040] Among them, the pericardial opening device 10 includes: a delivery tube 110, a mounting seat 120 and a shearing component 130 that are connected to each other.

[0041] In this embodiment, a first channel 1201 connecting the delivery tube 110 is provided on the mounting seat 120. The shearing component 130 has a connected shearing end 131 and an operation end 132; 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; among them, 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 communicated with an adsorption component (not shown in the figure); the adsorption component 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 adjacent to the opening 101 and is used to perform a shearing operation on the tissue to be sheared entering the opening 101 under the manipulation of the operation end 132.

[0042] Therefore, in the solution of this embodiment, the tissue part to be sheared is sucked into the opening 101 by using the adsorption component, and the shearing operation is performed by the shearing end 131 located in the opening 101, so that a surgical opening can be cut out on the tissue to be sheared. And by adjusting the opening size of the shearing end 131, surgical openings of different sizes can be cut out, which is convenient for matching different surgical requirements. In addition, compared with the puncture solution, the solution of forming a surgical opening by using the shearing end 131 for shearing treatment in this embodiment has a smoother opening edge of the formed surgical opening, which is more convenient for suturing the pericardium after the operation.

[0043] Please refer further to Figure 1 and Figure 3 。

[0044] In this embodiment, the delivery tube 110 is a sheath tube. The delivery tube 110 includes a transparent connector 111 and a connecting tube 112 connected to each other. Among them, the transparent connector 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 communicates with the first channel 1201.

[0045] Among them, the opening 101 is opened on the transparent connector 111. By setting the transparent connector 111 to be transparent, it is convenient to observe the state of the tissue to be sheared and the cutting state of the shearing end 131 in real time during the cutting operation by the shearing end 131, so that the accuracy of the cutting operation can be improved, the surgical difficulty can be reduced, and the surgical time can be shortened.

[0046] Among them, optionally, an anti-adhesion coating is provided on the surface of the transparent connector 111. The anti-adhesion coating is used to prevent tissue or tissue fluid from adhering to the surface of the transparent connector, so that after the transparent connector 111 enters the tissue, the risk of tissue and tissue fluid adhering to the surface of the transparent connector can be reduced. Therefore, after the transparent connector 111 enters the tissue, it can be ensured that the opening position can be quickly and accurately found through the transparent connector 111.

[0047] Among them, preferably, an illumination lens can also be provided in the delivery tube 110. The illumination lens can emit illumination light to the transparent connector 111. At the same time, the illumination lens can also be used to obtain an image of the area of the transparent connector 111. 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 area of the transparent connector 111 in real time through the external display device, so that the surgical difficulty of the pericardial opening surgery can be reduced and the surgical safety can be improved.

[0048] Specifically, please refer further to Figure 3 。

[0049] In this embodiment, a second channel 1202 is formed in the mounting base 120. A lighting lens 122 is disposed in the second channel 1202. The lighting lens 122 extends along the second channel 1202 to the end of the delivery tube 110 away from the mounting base 120 and is arranged not to extend beyond the opening 101. The lighting lens 122 is configured to emit illumination light and to acquire an image of one end of the transparent connector 111.

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

[0051] Further, in this embodiment, the cutting end 131 extends to at least partially enter the transparent connector 111, and the cutting end 131 does not extend beyond 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 connector 111, and the opening 101 is formed on the arc surface 112. The arc surface 112 is set to be smooth and flat and will not cause damage to the tissue.

[0053] Further, please refer to Figure 2 and Figures 4 - 6 . Figure 4 is Figure 1 the left view of the pericardial opening device shown; Figure 5 is Figure 4 the schematic diagram of the cutting end in the II area of the package opening device shown when it is closed; Figure 6 is Figure 4 the schematic diagram of the cutting end in the II area of the package opening device shown when it is opened. Among them, Figure 4 the operation end of the cutting assembly is hidden in the pericardial opening device shown.

[0054] In this embodiment, the opening 101 includes a first opening portion 1011 away from the mounting base 120 and a second opening portion 1012 connected to the first opening portion 1011; the edge of the first opening portion 1011 extends to the edge of the arc surface 102; the opening size of the second opening portion 1012 gradually decreases in the direction away from the first opening portion 1011, and the shape of the second opening portion 1012 matches the maximum unfolded state of the shearing end 131. In this solution, extending the edge of the first opening portion 1011 to the edge of the arc surface 102 can ensure that the opening 101 is large enough to allow tissues of sufficient size to enter; matching the shape of the second opening portion 1012 with the maximum unfolded state of the shearing end 131 can play a role in covering the shearing end 131, avoiding the shearing end 131 from protruding out of the opening 101, and moreover, enabling the tissues inhaled at the position of the second opening portion 1012 to match the shearing end 131 under the influence of the opening shape, thus facilitating the cutting operation of the tissues more conveniently.

[0055] Wherein, the connection part between the first opening portion 1011 and the second opening portion 1012 is smoothly connected.

[0056] Further, please refer to Figure 1 、 Figure 3 and Figure 4 。

[0057] In this embodiment, a first interface 121 is further opened on the side wall of the mounting base 120. Among them, the first interface 121 can be connected to the inside of the conveying pipe 110 through the mounting base 120, and the first interface 121 can be used to connect to an external negative pressure suction device, so as to evacuate the conveying pipe 110, and enable the tissue to be sheared to be adsorbed and partially enter the opening 101.

[0058] In this embodiment, the illumination lens 122 is integrally tubular, and a fixing mechanism 123 is arranged on the mounting base 120. Among them, the fixing mechanism 123 includes a fixing piece 1231 and a top rod 1232 connected to the fixing piece 1231.

[0059] Among them, the top rod 1232 can be screwed to the mounting base 120. By rotating the top rod 1232, the fixing piece 1231 can move towards or away from the tube body of the illumination lens 122. By using the top rod 1232, the part of the illumination lens 122 in the second channel 1202 can be tightened against the second channel 1202, so as to fix the position of the illumination lens 122. By loosening the tight fit between the part of the illumination lens 122 in the second channel 1202 and the second channel 1202 by using the top rod 1232, the operator can adjust the position of the illumination lens 122 at the end close to the transparent joint 111 by pulling the illumination lens 122, so as to facilitate finding the best illumination and image acquisition position of the illumination lens 122.

[0060] Further, in this embodiment, the shearing assembly 130 is also fixedly installed on the mounting base 120.

[0061] Among them, the fixing position of the shearing assembly 130 is adjustably installed in 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 fixing position of the shearing assembly 130. In some other embodiments, threads can be provided on the tube body of the shearing assembly 130. By screwing the tube body of the shearing assembly 130 with the mounting base 120 and rotating the shearing assembly 130, the position of the shearing end 131 of the shearing assembly 130 can be adjusted.

[0062] Further, in this embodiment, the operating end 132 can be a pressing handle. By pressing the operating end 132, the opening and closing of the shearing end 131 can be controlled to achieve the shearing action. Among them, the position and orientation of the shearing end 131 in the transparent joint 111 are both fixed.

[0063] In some other embodiments, optionally, the operating end 132 can be separately arranged from the mounting base 120. In this solution, it is convenient to rotate the whole shearing assembly 130 around its axis to adjust the shearing direction of the shearing end 131. In this solution, a sealing ring 133 can be arranged in the first channel 1201. The sealing ring 133 is arranged in the gap between the first channel 1201 and the tube body of the shearing assembly 130, which can prevent air leakage at the position of the first channel 1201 of the conveying pipe 110 and ensure the negative pressure adsorption effect in the conveying pipe 110.

[0064] Among them, the operating end 132 can also be fixedly connected to the mounting base 120, which can improve the stability and reliability of the whole mechanism.

[0065] Further, in this embodiment, a third channel (not shown in the figure) can also be arranged on the mounting base 120. Among them, the third channel is also communicated with the conveying pipe 110. The third channel can be used for a set intervention instrument to enter and extend to the transparent joint 111.

[0066] In this embodiment, the intervention instrument can be a sampling device such as a sampling forceps or a catheter, or it can also be an auxiliary surgical device such as a clip or scissors for interventional surgery.

[0067] In summary, the present application provides a pericardial opening device. In the solution of the present application, the tissue part to be sheared is sucked into the opening by the adsorption component, and the shearing operation is performed by the shearing end located in the opening, so that a surgical opening can be cut out on the tissue to be sheared. Moreover, by adjusting the opening size of the shearing end, surgical openings of different sizes can be cut out, which is convenient for matching different surgical requirements. In addition, compared with the puncture solution, in this embodiment, the solution of forming a surgical opening by shearing with the shearing end results in a smoother opening edge of the surgical opening, which is more convenient for suturing the pericardium after the operation is completed subsequently.

[0068] The above embodiments are only illustrative examples of the present application, rather than all embodiments. The present application can 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 regarded as illustrative rather than restrictive in any aspect. The scope of the present application should be defined by the appended claims, and any equivalent changes to the intention and scope of the claims should also be included within the scope of the present application.

Claims

1. A pericardial opening device, characterized in that, The pericardial opening device includes: A delivery tube, a mounting seat, and a shearing assembly connected to each other; The mounting seat is provided with a first channel connecting the delivery tube, and the shearing assembly has a connected shearing end and an operating end; The shearing end enters the delivery tube along the first channel and extends to the end of the delivery tube away from the mounting seat; Wherein, an opening matching the shearing end is provided at the end of the delivery tube away from the mounting seat; the delivery tube is also communicated with an adsorption assembly; The adsorption assembly 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, wherein One end of the delivery tube away from the mounting seat is a transparent joint, and the opening is provided in the transparent joint.

3. The pericardial opening device according to claim 2, wherein An anti-sticking coating is provided on the surface of the transparent joint, and the anti-sticking 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, wherein The shearing end extends to at least partially enter the transparent joint, and the shearing end does not extend beyond the opening.

5. The pericardial opening device according to claim 2, wherein An arc surface is provided at the end of the transparent joint, and the opening is provided in the arc surface.

6. The pericardial opening device according to claim 5, wherein 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 extends to the edge of the arc surface; The opening size of the second opening portion gradually decreases in the direction away from the first opening portion, and the shape of the second opening portion matches the maximum unfolded state of the shearing end.

7. The pericardial opening device according to any one of claims 1-6, wherein A second channel is provided on the mounting seat, and an illumination lens is provided in the second channel. The illumination lens extends along the second channel to the end of the delivery tube away from the mounting seat and does not extend beyond the opening; The illumination lens is used to emit illumination light and is used to obtain an image of the end of the delivery tube away from the mounting seat.

8. The pericardial opening device according to claim 7, wherein The illumination lens is fixedly and adjustably mounted in the second channel; The shearing assembly is fixedly and adjustably mounted in the first channel.

9. The pericardial opening device according to claim 7, wherein A sealing ring is provided between the shearing assembly and the first channel. The sealing ring is located in the sealing ring and sleeved on the shearing assembly; The shearing assembly is arranged to be able to rotate around a rotation axis parallel to the axis direction of the first channel as the rotation center.

10. The pericardial opening device according to claim 2, wherein The mounting base is further provided with a third channel connecting the delivery tube, and the third channel is used for allowing a set of interventional instruments to enter and extend to the transparent connector.

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