Atrial septum puncture sheath

Abstract

The utility model discloses an atrial septum puncture sheath which comprises an outer sleeve, a guide tube and a cooling channel are fixedly arranged in the outer sleeve, a guide-in opening and a cooling opening which are matched with the guide tube and the cooling channel respectively are further formed in the outer sleeve, and a guide-out opening matched with the guide tube is further formed in the puncture end of the outer sleeve. A guide wire penetrates into the guide tube from the guide-in opening and then penetrates out of the guide-out opening, an integrally-formed cooling bag is arranged at the position, close to the puncture end, of the outer sleeve, the cooling bag is communicated with the cooling channel, and during cooling, a cooling medium is led into the cooling channel from the cooling opening. According to the atrial septum puncture sheath, due to the fact that the independent channels are arranged to be matched with the guide wire and the freezing balloon, puncture and introduction of a cooling medium into the cooling balloon can be efficiently carried out, a safe channel can be provided for other surgical tools after the guide wire is drawn out, and operation can be conveniently carried out through the atrial septum puncture sheath in a surgery.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an atrial septal puncture sheath. Background Art

[0002] The atrial septal puncture sheath is suitable for cardiac surgery, especially atrial fibrillation (AF) surgery. It is a sterile medical device used in conjunction with guidewires and dilators. It can provide a safe channel for other surgical tools or methods such as catheters. The atrial septal puncture sheath is needed when performing radiofrequency ablation or cryoablation on patients with atrial fibrillation.

[0003] When performing cryoablation treatment, a longer guide wire is generally used to enter the vein (usually the femoral vein or pulmonary vein) first, and then the puncture sheath and dilator are followed along the guide wire to the appropriate puncture position for subsequent operations. In the cryoablation surgery, the puncture sheath needs to be equipped with a cryoballoon, and the cryoballoon needs to be filled with cryogenic gas to produce a freezing therapeutic effect on the tissues around the target site. Therefore, a puncture sheath is needed that is convenient for ventilation of the cryoballoon and can cooperate with the guide wire for guidance. Utility Model Content

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to propose an atrial septal puncture sheath, which can be conveniently used for operation during surgery by setting up independent channels to cooperate with a guide wire and a cryoballoon.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides an atrial septal puncture sheath, including an outer sleeve, a guide tube and a cooling channel are fixedly arranged in the outer sleeve, the diameter of the guide tube is 0.8mm, and the diameter of the cooling channel is 0.4mm; the outer sleeve is also provided with an introduction port and a cooling port respectively matched with the guide tube and the cooling channel, and the puncture end of the outer sleeve is also provided with an outlet matched with the guide tube. During guidance, the guide wire passes through the guide tube from the introduction port and then passes out from the outlet. The outer sleeve is provided with an integrally formed cooling bag near the puncture end, and the cooling bag is made of elastic material. The cooling bag is connected to the cooling channel. During cooling, a cooling medium is introduced from the cooling port to the cooling channel. Furthermore, a protective valve is connected to the cooling port to protect the puncture sheath when the cooling medium is input.

[0007] An optimal technical solution of the utility model is that a plurality of connecting holes cooperating with the cooling bag are opened on the outer sleeve to connect the cooling bag and the cooling channel, the number of the connecting holes is not less than three, and the plurality of connecting holes are evenly arranged along the length direction of the outer sleeve.

[0008] An optimal technical solution of the utility model is that a smooth transition is adopted between the introduction port and the puncture end of the outer sleeve to prevent damage to the tissue caused by scratches during puncture.

[0009] The beneficial effects of the utility model are:

[0010] The utility model provides independent separate channels for the guide wire and the cryoballoon, so that the puncture and the introduction of the cooling medium into the cooling balloon can be carried out efficiently, and after the guide wire is withdrawn, a safe channel can be provided for other surgical tools, so that the atrial septal puncture sheath can be conveniently used for operation during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure principle of an atrial septal puncture sheath provided in a specific embodiment of the utility model;

[0012] Figure 2 It is a structural schematic diagram of another perspective of an atrial septal puncture sheath provided in a specific embodiment of the utility model;

[0013] Figure 3 yes Figure 2 Enlarged schematic diagram of aa in the middle;

[0014] Figure 4 It is a schematic diagram of the structure of the cooling bag after expansion provided in a specific embodiment of the utility model;

[0015] In the figure:

[0016] 1. Outer sleeve; 2. Guide pipe; 3. Cooling channel; 21. Inlet; 31. Cooling port; 22. Outlet; 10. Cooling bag; 101. Connecting hole; 311. Protection valve. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods. It should be noted that the accompanying drawings are only for clearly illustrating the principle of the present invention and do not represent the actual size.

[0018] As shown in the figure, an atrial septal puncture sheath includes an outer sleeve 1, in which a guide tube 2 and a cooling channel 3 are fixedly provided. Furthermore, the diameter of the guide tube 2 is 0.8 mm, and the diameter of the cooling channel 3 is 1.4 mm, so as to facilitate puncture. The outer sleeve 1 is also provided with an introduction port 21 and a cooling port 31 respectively cooperating with the guide tube 2 and the cooling channel 3. The puncture end of the outer sleeve 1 is also provided with an outlet 22 cooperating with the guide tube 2. During guidance, the guide wire passes through the guide tube 2 from the introduction port 21 and then passes out from the outlet 22. The outer sleeve 1 is provided with an integrally formed cooling bag 10 near the puncture end. The cooling bag 10 is connected to the cooling channel 3. During cooling, a cooling medium is introduced into the cooling channel 3 from the cooling port 31. In this case, an independent guide tube 2 and a cooling channel 3 are provided. When the guide wire is in use, it passes through the guide tube 2 through the introduction port 21 and finally passes through the outlet port 22. In this way, the guide wire can independently play a guiding role through the guide tube 2. At the same time, the cooling medium can be independently introduced into the cooling channel 3 through the cooling port 31. For example, in a cooling ablation operation, a cryoablation device is used to deliver the freezing medium (N2O) into the cooling channel 3 through the cooling port 31, and then into the cooling bag 10 for sealing and cryoablation. Since the cooling bag 10 needs to be expanded and sealed, the cooling bag 10 is made of elastic material. The cryoablation device is responsible for the transportation and recovery of the cooling medium during the whole process. Furthermore, a protective valve 311 is connected to the cooling port 31 to protect the puncture sheath when the cooling medium is input.

[0019] Preferably, the outer sleeve 1 is provided with a plurality of connecting holes 101 cooperating with the cooling bag 10 to connect the cooling bag 10 and the cooling channel 3. The number of the connecting holes 101 is not less than three, and the plurality of connecting holes 101 are evenly arranged along the length direction of the outer sleeve 1 to prevent the generation of cavitation and safety hazards.

[0020] Preferably, a smooth transition is adopted between the introduction port 21 and the puncture end of the outer sleeve 1 to prevent damage to the tissue caused by scratches during puncture.

[0021] The present invention is described by preferred embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the claims of this application are within the scope of protection of the present invention.

Claims

1. A transseptal puncture sheath, characterized in that: The invention comprises an outer sleeve (1), wherein a guide tube (2) and a cooling channel (3) are fixedly arranged in the outer sleeve (1), and an introduction port (21) and a cooling port (31) are respectively arranged on the outer sleeve (1) and cooperate with the guide tube (2) and the cooling channel (3). The puncture end of the outer sleeve (1) is also provided with an outlet port (22) which cooperates with the guide tube (2). During guidance, the guide wire passes through the guide tube (2) from the introduction port (21) and then passes out from the outlet port (22). The outer sleeve (1) is provided with an integrally formed cooling bag (10) near the puncture end, and the cooling bag (10) is connected to the cooling channel (3). During cooling, a cooling medium is introduced into the cooling channel (3) from the cooling port (31).

2. The atrial septal puncture sheath according to claim 1, characterized in that: The outer sleeve (1) is provided with a plurality of communication holes (101) cooperating with the cooling bag (10) so as to connect the cooling bag (10) and the cooling channel (3), the number of the communication holes (101) being not less than three, and the plurality of communication holes (101) being evenly arranged along the length direction of the outer sleeve (1).

3. The atrial septal puncture sheath according to claim 2, characterized in that: A smooth transition is adopted between the introduction port (21) and the puncture end of the outer sleeve (1) to prevent damage to tissue caused by scratches during puncture.

4. The atrial septal puncture sheath according to claim 1, characterized in that: The cooling port (31) is connected to a protection valve (311) to protect the puncture sheath when the cooling medium is input.

5. The atrial septal puncture sheath according to claim 1, characterized in that: The diameter of the guide tube (2) is 0.8 mm, and the diameter of the cooling channel (3) is 1.4 mm.

6. The atrial septal puncture sheath according to claim 1, characterized in that: The cooling bag (10) is made of elastic material.

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