Dual-purpose pericardial puncture device

Abstract

The present application relates to a kind of dry-wet dual-purpose pericardial puncture device, including shell, multicavity tube, puncture needle, puncture guide wire, multicavity tube is arranged on shell;Puncture needle is slidably arranged in one of the cavities of multicavity tube;Puncture guide wire is slidably arranged in other cavities of multicavity tube.The present application combines puncture needle and puncture guide wire by multicavity tube, is designed into integrated structure, is suitable for dry and wet pericardial puncture, and can be operated only by different use modes.And the structure of the present application is simple, and the difficulty of operation is low, and doctor can simply and conveniently puncture, and too much experience can also be completed surgery, and the risk coefficient of puncture method and process is lower, and it is convenient for more hospitals and doctors to use.

Description

Technical Field

[0001] This invention relates to the field of medical devices, specifically to a dry and wet pericardiocentesis device. Background Technology

[0002] The pericardium is a connective tissue membrane structure attached to the outer wall of the heart, and the space between the pericardium and the outer wall of the heart is called the pericardial cavity. Pericardiocentesis is the foundation of many cardiac interventional procedures, and this procedure is divided into wet pericardiocentesis and dry pericardiocentesis. A wet pericardium indicates that there is pericardial effusion in the pericardial cavity, which expands the cavity and increases the distance between the pericardium and the ventricles. Wet pericardiocentesis allows for the drainage of this fluid, preventing it from affecting the heart. A dry pericardium indicates that there is no pericardial effusion in the pericardial cavity. The purpose of dry pericardiocentesis is to establish a surgical channel to facilitate subsequent electrophysiological mapping, ablation, and implantation of cardiac pacing electrode leads.

[0003] Existing pericardiocentesis tools are basically scattered puncture kits, which require doctors to use them one by one during the operation. This is complicated and increases the learning curve for doctors. In addition, dry pericardiocentesis kits and wet pericardiocentesis kits require different parts. Different tools need to be prepared for different puncture procedures, which increases the extra preparation work and is not convenient for clinical emergency operations.

[0004] Currently, some manufacturers have designed integrated puncture devices, but the design structure is complex, the cost is high, the operation is difficult, the failure rate of complex structures is also higher, and the function is limited, making it impossible to perform two puncture procedures. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a dual-purpose (dry and wet) pericardiocentesis device. This device integrates the puncture needle and guidewire into a single unit via a multi-lumen tube, making it suitable for both dry and wet pericardiocentesis. The operation is achieved simply by using different methods. Furthermore, this invention features a simple structure and low operational difficulty, allowing doctors to perform punctures easily and conveniently without extensive experience. The method and process have a lower risk factor, making it more accessible to hospitals and doctors.

[0006] To achieve the above objectives, the present invention employs the following technical solution:

[0007] This invention provides a dual-purpose (dry and wet) pericardiocentesis device, comprising:

[0008] case;

[0009] A multi-lumen tube, wherein the multi-lumen tube is disposed on the housing;

[0010] A puncture needle, which is slidably disposed within one of the lumens of the multi-lumen tube;

[0011] A puncture guidewire, which is slidably disposed in the other cavities of the multi-lumen tube.

[0012] Preferably, it further includes:

[0013] A puncture needle push button is slidably disposed on the housing and is connected to the puncture needle.

[0014] Preferably, a push button sliding hole is formed on the housing, and the puncture needle push button is transitionally fitted in the push button sliding hole.

[0015] Preferably, the surface of the puncture needle push button that conforms to the push button sliding hole has an elastic protrusion.

[0016] Preferably, a guide hole is formed on the puncture needle push button, and the guide hole communicates with the inner hole of the puncture needle for inserting a guide wire.

[0017] Preferably, it further includes:

[0018] A guidewire push button is slidably disposed on the housing and is connected to the puncture guidewire.

[0019] Preferably, the housing has a guide groove, and the guide wire push button has a protrusion that slidably engages within the guide groove.

[0020] Preferably, it further includes:

[0021] An elastic element, the two ends of which are respectively connected to the guide wire push button and the housing.

[0022] Preferably, it also includes a guide shaft, on which a shaft hole is formed, the guide shaft passing through the shaft hole and fixed to the housing.

[0023] Preferably, it further includes:

[0024] A guide block is fixed to the housing, and a guide hole is formed on the guide block, through which the puncture needle and the puncture guide wire pass.

[0025] The present invention has at least the following beneficial effects:

[0026] This invention combines the puncture needle and guidewire into a single, integrated structure using a multi-lumen tube. It is suitable for both dry and wet pericardiocentesis, requiring only different operating methods. Furthermore, the invention's simple structure and low operational difficulty allow doctors to perform punctures easily and conveniently, requiring minimal experience. The method and procedure have a lower risk factor, making it more accessible to a wider range of hospitals and doctors.

[0027] The housing of the present invention has a push button sliding hole, and the puncture needle push button is fitted into the push button sliding hole. The outer diameter of the puncture needle push button is slightly larger than the push button sliding hole. When the puncture needle push button is in the push button sliding hole, its outer periphery is squeezed and deformed. Therefore, the puncture needle push button can be fixed at any position in the push button sliding hole. The doctor can push the puncture needle push button to any position and release it to achieve fixation.

[0028] The housing of the present invention has a guide groove, and the guide wire push button has a protrusion. The protrusion is slidably fitted in the guide groove. Under the limiting and guiding effect of the guide groove, the doctor is less likely to shake when pushing the guide wire push button, thereby improving the success rate of the operation.

[0029] This invention uses a guide block to fix the puncture needle and guide wire, which can ensure the stability of the puncture needle and guide wire during the sliding process and improve the success rate of the operation.

[0030] The guidewire push button of the present invention is connected to the elastic element. When the guidewire push button pushes the puncture guidewire outward, the elastic element is compressed. When the tip of the puncture guidewire passes through the pericardium and curls into a pig tail shape, the guidewire push button is released. The guidewire push button and the puncture guidewire move in opposite directions under the rebound action of the elastic element, so that the tip of the puncture guidewire abuts against and supports the pericardium, thereby increasing the gap between the pericardium and the outer wall of the heart, thus facilitating subsequent operations. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the dry and wet pericardiocentesis device of this invention in the non-puncture state according to an embodiment of the invention;

[0032] Figure 2 This is a schematic diagram of the pericardiocentesis device for both dry and wet use according to an embodiment of the present invention in the puncture state;

[0033] Figure 3 This is a schematic diagram of the pericardiocentesis device for both dry and wet use according to an embodiment of the present invention in the state of inserting the guide wire;

[0034] Figure 4 This is an exploded view of the dry and wet pericardiocentesis device according to an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the multi-lumen tube, puncture needle, and puncture guidewire of the dry / wet pericardiocentesis device of this invention in the non-puncture state.

[0036] Figure 6 This is a schematic diagram of the multi-lumen tube, puncture needle, and puncture guidewire of the dry / wet pericardiocentesis device of this invention in the puncture state.

[0037] Figure 7This is a partial structural diagram of the dry and wet pericardiocentesis device of this invention in the non-puncture state;

[0038] Figure 8 This is a schematic diagram of part of the shell structure of the dry and wet pericardiocentesis device according to an embodiment of the present invention;

[0039] Figure 9 This is a schematic diagram of the shell structure of the dry and wet pericardiocentesis device according to an embodiment of the present invention;

[0040] Figure 10 This is a schematic diagram of the structure of a dry pericardium;

[0041] Figure 11 This is a schematic diagram of the structure of a wet pericardium;

[0042] Figure 12 This is a schematic diagram of the structure of the multi-lumen tube of the dry and wet pericardiocentesis device according to an embodiment of the present invention when it reaches the dry pericardium;

[0043] Figure 13 This is a schematic diagram of the structure of the guide wire of the dry and wet pericardiocentesis device according to an embodiment of the present invention when puncturing the dry pericardium;

[0044] Figure 14 for Figure 13 Enlarged view of 'a' in the middle;

[0045] Figure 15 This is a schematic diagram of the puncture guide wire of the dry and wet pericardiocentesis device according to an embodiment of the present invention when it begins to bend;

[0046] Figure 16 for Figure 15 Enlarged view of b in the middle;

[0047] Figure 17 This is a schematic diagram of the gradual formation of the puncture guide wire in the dry and wet pericardiocentesis device according to an embodiment of the present invention;

[0048] Figure 18 for Figure 17 Enlarged view of C in the middle;

[0049] Figure 19 This is a schematic diagram of the structure of the puncture needle of the dry and wet pericardiocentesis device according to an embodiment of the present invention when puncturing the dry pericardium;

[0050] Figure 20 for Figure 19 Enlarged view of d in the middle;

[0051] Figure 21 This is a schematic diagram of the structure of the dry and wet pericardiocentesis device of this invention during the insertion of the guide wire;

[0052] Figure 22 for Figure 21Enlarged view of 'e' in the middle;

[0053] Figure 23 This is a schematic diagram of the structure of the dry and wet pericardiocentesis device of this invention during withdrawal;

[0054] Figure 24 for Figure 23 Enlarged view of f in the middle;

[0055] Figure 25 This is a schematic diagram of the structure when only the guide wire remains.

[0056] Figure 26 This is a schematic diagram of the structure of the multi-lumen tube of the puncture needle of the dry and wet pericardiocentesis device according to an embodiment of the present invention when it reaches the wet pericardium;

[0057] Figure 27 This is a schematic diagram of the structure of the puncture needle of the dry and wet pericardiocentesis device according to an embodiment of the present invention when puncturing a wet pericardium;

[0058] Figure 28 for Figure 27 Enlarged view of g in the middle;

[0059] Reference numerals: 1. Shell; 2. Multilumen tube; 3. Puncture needle; 4. Puncture guidewire; 5. Upper shell; 6. Lower shell; 7. Locking ring; 8. Fixing shaft; 9. Recess; 10. Puncture needle push button; 11. Push button sliding hole; 12. Elastic protrusion; 13. Guide hole; 14. Guide wire; 15. Guide wire push button; 16. Sliding hole; 17. Guide groove; 18. Protrusion; 19. Elastic element; 20. Guide shaft; 21. Guide block; 22. Fixing sleeve; 23. Pericardium; 24. Cardiac outer wall; 25. Pericardial cavity. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0061] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "connected" or "linked" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up," "down," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0062] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0063] like Figure 1-3 As shown, an embodiment of the present invention provides a dry and wet pericardiocentesis device, including a housing 1, a multi-lumen tube 2, a puncture needle 3, and a puncture guide wire 4. The multi-lumen tube 2 is disposed on the housing 1; the puncture needle 3 is slidably disposed in one of the lumens of the multi-lumen tube 2; and the puncture guide wire 4 is slidably disposed in the other lumens of the multi-lumen tube 2.

[0064] like Figure 4-9 As shown, the housing 1 has cavities inside to house various components. One end of the multi-lumen tube 2 is fixed inside the housing 1, and the other end protrudes from the housing 1. The outer shell can be divided into an upper outer shell 5 and a lower outer shell 6. The upper outer shell 5 and the lower outer shell 6 can be detached and fixed together by a locking ring 7 or a fixing shaft 8. This structure facilitates installation and maintenance. The housing 1 has a recessed part 9 for easy gripping by doctors. The outer shell also has a fixing sleeve 22, in which one end of the multi-lumen tube 2 is fixed. The multi-lumen tube 2 has multiple cavities inside. The number, shape, and arrangement of the cavities are selected according to actual needs. For example, if there is one puncture needle 3 and two puncture guide wires 4, then the multi-lumen tube 2 has three cavities. The shape of the cavities matches the puncture needle 3 and the puncture guide wire 4. The cavity for inserting the puncture needle 3 can be placed in the middle, and the two cavities for inserting the puncture guide wire 4 can be placed on both sides. The puncture guidewire 4 can be a nickel-titanium flat wire with a pointed pigtail-shaped tip. When fully retracted inside the multi-lumen tube 2, it will be in a straight state. When it is released, it will automatically roll into a pigtail shape. This structure can support the pericardium 23 after puncture, and timely rotation after puncture can achieve the effect of not damaging other tissues.

[0065] This invention combines the puncture needle 3 and the puncture guidewire 4 into a single integrated structure via a multi-lumen tube 2. It is suitable for both dry and wet pericardiocentesis, requiring only different operating methods. Furthermore, the invention's simple structure and low operational difficulty allow doctors to perform punctures easily and conveniently, requiring minimal experience. The method and process have a lower risk factor, making it more accessible to a wider range of hospitals and doctors.

[0066] In a preferred embodiment, the dual-purpose wet and dry pericardiocentesis device further includes a puncture needle push button 10, which is slidably mounted on the housing 1 and connected to the puncture needle 3. The puncture needle push button 10 can be connected to the puncture needle 3 by adhesive bonding, and the insertion and removal of the puncture needle 3 can be achieved by pushing or pulling, making the operation simple and convenient.

[0067] In a preferred embodiment, a push button sliding hole 11 is formed on the housing 1, and the puncture needle push button 10 is fitted into the push button sliding hole 11. The push button sliding hole 11 on the housing 1 corresponds to the multi-lumen tube 2. The push button sliding hole 11 and the puncture needle push button 10 can be set into a cylindrical shape. The outer diameter of the puncture needle push button 10 is slightly larger than that of the push button sliding hole 11. When the puncture needle push button 10 is in the push button sliding hole 11, its outer structure is compressed and deformed. Therefore, the puncture needle push button 10 can be fixed at any position in the push button sliding hole 11. That is to say, the doctor can push the puncture needle push button 10 to any position and release it to achieve fixation.

[0068] In a preferred embodiment, the peripheral structure of the puncture needle push button 10 is an elastic protrusion 12 that conforms to the surface of the push button sliding hole 11. The protrusion on the surface of the puncture needle push button 10 can be configured as a structure surrounding itself, and multiple protrusions can be configured to ensure tight fixation at any position. The surface of the push button sliding hole 11 can be provided with a groove that matches the elastic protrusion 12.

[0069] In a preferred embodiment, a guide hole 13 is formed on the puncture needle push button 10. The guide hole 13 communicates with the inner hole of the puncture needle 3 for inserting the guide wire 14. The guide hole 13 can be designed as a conical Luer orifice to facilitate the doctor's use of a syringe for cleaning or aspirating pericardial effusion during surgery.

[0070] In a preferred embodiment, the dual-purpose wet and dry pericardiocentesis device further includes a guidewire push button 15, which is slidably mounted on the housing 1 and connected to the puncture guidewire 4. The guidewire push button 15 can be located on the side of the housing 1, which has a sliding hole 16. Part of the guidewire push button 15 is outside the housing 1, and part of it passes through the sliding hole 16 to connect with the guidewire inside. The doctor can easily operate the device using the guidewire push button 15.

[0071] In a preferred embodiment, the housing 1 has a guide groove 17, and the guide wire push button 15 has a protrusion 18, which is slidably fitted within the guide groove 17. The guide groove 17 and the protrusion 18 can be arranged as two separate units, one above the other. Under the limiting and guiding effect of the guide groove 17, the guide wire push button 15 is less prone to shaking during the doctor's push, thereby improving the success rate of the surgery.

[0072] In a preferred embodiment, the dual-purpose wet / dry pericardiocentesis device further includes an elastic element 19, with its two ends connected to a guidewire push button 15 and a housing 1, respectively. Two elastic elements 19 can be provided. The guidewire push button 15 is connected to the elastic element 19. When the guidewire push button 15 pushes the puncture guidewire 4 outward, the elastic element 19 is compressed. When the tip of the puncture guidewire 4 passes through the pericardium 23 and curls into a pigtail shape, the guidewire push button 15 is released. Under the rebound action of the elastic element 19, the guidewire push button 15 and the puncture guidewire 4 move in opposite directions, causing the tip of the puncture guidewire 4 to press against and support the pericardium 23, thus increasing the gap between the pericardium 23 and the outer wall 24 of the heart, facilitating subsequent operations. The elasticity of the elastic element 19 can be determined based on the doctor's experience and extensive experiments. The elastic element 19 can be a spring.

[0073] In a preferred embodiment, the dual-purpose wet and dry pericardiocentesis device further includes a guide shaft 20. A shaft hole is formed on the guide wire push button 15, through which the guide shaft 20 passes and is fixed to the housing 1. The limiting and guiding effect of the guide shaft 20 further improves the stability of the guide wire push button 15 during sliding. Two guide shafts 20 and shaft holes can be provided. The elastic element 19 can be a hollow structure, and the guide shaft 20 can be inserted inside the elastic element 19. Furthermore, the elastic element 19 and the guide shaft 20 can be disposed in the guide groove 17. This layout greatly saves the space occupied by the components.

[0074] In a preferred embodiment, the dual-purpose wet and dry pericardiocentesis device further includes a guide block 21, which is fixed to the housing 1. A guide hole is formed on the guide block 21 through which the puncture needle 3 and the guide wire 4 pass. Because the internal space of the housing 1 is relatively long, the length of the puncture needle 3 and the guide wire 4 protruding from the multi-lumen tube 2 is relatively long. Further fixing the puncture needle 3 and the guide wire 4 with the guide block 21 ensures the stability of the puncture needle 3 and the guide wire 4 during sliding, thereby improving the success rate of the procedure.

[0075] The following describes the puncture process using the dry and wet pericardiocentesis device of this embodiment.

[0076] Preparations are required before the puncture: first, disinfect the puncture site, then administer local anesthesia, and then perform thoracentesis using a short sheath (not shown), leaving the sheath in place within the pleural cavity. The structures of dry and wet pericardium are as follows... Figure 10-11 As shown.

[0077] After completing the preparations, either dry or wet pericardiocentesis can be performed. Figure 12-25 As shown, the procedure for dry pericardiocentesis is as follows:

[0078] First, holding the casing 1, insert the multi-lumen tube 2 along the short sheath until it reaches the edge of the pericardium 23, then insert the tip of the multi-lumen tube 2 into the puncture point of the pericardium 23 until the tip contacts the puncture point; Second, push the puncture guide wire 4 a certain distance toward the puncture point so that the tip of the puncture guide wire 4 is inserted into the pericardium 23. The tip of the puncture guide wire 4 bends and shapes continuously during insertion into the pericardium 23, eventually supporting the pericardium 23 and leaving space between the pericardium 23 and the outer wall 24 of the heart; Third, push the puncture needle 3 into the pericardium 23 a predetermined distance; Fourth, insert the guide wire 14, used to establish the surgical channel, into the pericardium 23 along the inner hole of the puncture needle 3; Fifth, withdraw the puncture needle 3, puncture guide wire 4, and multi-lumen tube 2 in sequence.

[0079] like Figure 26-28 As shown, the procedure for performing wet pericardiocentesis is as follows:

[0080] First, hold the casing 1 and insert the multi-lumen tube 2 along the short sheath until it reaches the edge of the pericardium 23. Then, insert the tip of the multi-lumen tube 2 into the puncture point of the pericardium 23 until the tip contacts the puncture point. Second, push the puncture needle 3 a certain distance towards the puncture point so that the puncture needle 3 is inserted into the pericardial cavity 25. Third, use a syringe or other tools to perform operations such as aspiration of pericardial effusion along the inner hole of the puncture needle 3.

[0081] The above embodiments are used to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be understood as falling within the protection scope of the present invention.

Claims

1. A dry-wet dual-purpose pericardial puncture device, characterized in that, It comprises: a shell (1); a multi-cavity tube (2) arranged on the shell (1); a puncture needle (3) slidably arranged in one cavity of the multi-cavity tube (2); a puncture guide wire (4) slidably arranged in the other cavity of the multi-cavity tube (2); a guide wire push button (15) slidably arranged on the shell (1), the guide wire push button (15) being connected to the puncture guide wire (4); a resilient member (19) having two ends connected to the guide wire push button (15) and the shell (1) respectively; when the head end of the puncture guide wire (4) is curled into a pigtail shape, the guide wire push button (15) is released, the guide wire push button (15) and the puncture guide wire (4) move in the opposite direction under the rebounding action of the resilient member (19), so that the head end of the puncture guide wire (4) abuts against and props up the pericardium, and the gap between the pericardium and the outer wall of the heart becomes larger.

2. The dry / wet pericardial puncture device according to claim 1, wherein It further comprises: a puncture needle push button (10) slidably arranged on the shell (1), the puncture needle push button (10) being connected to the puncture needle (3).

3. The wet / dry pericardial puncture apparatus of claim 2, wherein, A push button sliding hole (11) is formed on the shell (1), and the puncture needle push button (10) is transitionally fitted in the push button sliding hole (11).

4. The wet / dry pericardial puncture apparatus of claim 3, wherein, An elastic protrusion (12) is formed on the surface of the puncture needle push button (10) abutting against the push button sliding hole (11).

5. The wet / dry pericardial puncture apparatus according to claim 2 or 3, characterized by, A guide hole (13) is formed on the puncture needle push button (10), the guide hole (13) being in communication with the inner hole of the puncture needle (3), and being used for inserting and guiding the guide wire (14).

6. The dry and wet dual-purpose pericardial puncture device according to claim 1, characterized in that, The shell (1) is formed with a guide groove (17), and a protrusion (18) is formed on the guide wire push button (15), the protrusion (18) being slidably fitted in the guide groove (17).

7. The wet / dry pericardial puncture apparatus of claim 1, wherein, It further comprises: a guide shaft (20), an axle hole being formed on the guide wire push button (15), the guide shaft (20) penetrating through the axle hole and being fixed on the shell (1).

8. The wet / dry pericardial puncture apparatus of claim 1, wherein, It further comprises: a guide block (21) fixed on the shell (1), the guide block (21) being formed with a guide hole, the puncture needle (3) and the puncture guide wire (4) penetrating through the guide hole.

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