Atrial septum puncture guide wire

Abstract

The utility model discloses an atrial septum puncture guide wire which comprises a guide wire body, the guide wire body comprises a core wire, a wrapping layer wrapping the outer side of the core wire and a hydrophilic coating wrapping the outer side of the wrapping layer, one end of the core wire is a puncture part, and the other end of the core wire is a soft head part. The guide wire has the advantages that the guide wire body composed of the core wire, the wrapping layer and the hydrophilic coating is matched with the bending adjusting sheath and the intracavity ultrasonic puncture to puncture the atrial septum of a patient, the puncture part at the tail end of the guide wire body is used for conducting mechanical injury on the atrial septum, and then the purpose of puncture approach is achieved; compared with the prior art, the atrial septum puncture guide wire with the structure has the advantages that high temperature and related risks cannot be caused, safety is better and puncture efficiency is higher during puncture of the atrial septum in the body of a patient, in addition, compared with an existing conventional atrial septum puncture needle matched with a sheath for puncture, one needle can be saved, and related consumable cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a transseptal puncture guidewire. Background Technology

[0002] In procedures such as atrial fibrillation ablation and left atrial appendage occlusion, atrial septal puncture is required. Traditional atrial septal puncture uses an atrial septal puncture needle with an atrial septal puncture sheath or an adjustable delivery sheath to enter the atrial septum, while the guidewire only serves as a guide after the puncture path is entered.

[0003] The current electrocautery puncture method uses a guidewire for puncture. Although the electrocautery puncture method can puncture the patient's atrial septum during the operation, the existing electrocautery puncture method generates high temperature at the tip of the guidewire due to its small area. The high temperature can damage the atrial septum and also damage the tip of the existing sheath, causing the tip to melt and fall off, thus increasing the risk of thrombotic complications. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The technical problem to be solved by this utility model is to provide an interatrial septum puncture guide wire that uses the puncture part at the end of the guide wire body to mechanically damage the interatrial septum and thus achieve the purpose of puncture access without causing high temperature and related risks, in light of the current state of the technology.

[0006] (II) Technical Solution

[0007] This utility model is achieved through the following technical solution: This utility model proposes a guide wire for interatrial septal puncture, including a guide wire body, the guide wire body including a core wire, a wrapping layer wrapped around the outside of the core wire and a hydrophilic coating wrapped around the outside of the wrapping layer, wherein one end of the core wire is a puncture part and the other end of the core wire is a soft head.

[0008] Furthermore, the core wire is made of stainless steel wire, and the puncture part is an exposed conical structure.

[0009] By adopting the above technical solution, the core wire can effectively ensure the structural strength of the guide wire.

[0010] Furthermore, the soft head is located inside the wrapping layer, and the soft head is bonded to the wrapping layer.

[0011] By adopting the above technical solution, the shape of the soft head can be adjusted according to actual usage needs. It can be straight or pre-bent, which facilitates forward movement without causing damage to blood vessels.

[0012] Furthermore, the wrapping layer is bonded to the core filament, and the wrapping layer is made of PU material.

[0013] By adopting the above technical solution, the encapsulation layer has good flexibility and biocompatibility, and can provide appropriate protection and support.

[0014] Furthermore, the hydrophilic coating is bonded to the encapsulation layer, and the hydrophilic coating is made of PAA material.

[0015] By adopting the above technical solution, the hydrophilic coating can improve the operational performance of the guidewire.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] To address the current problem of electrosurgical puncture, which uses a guidewire for puncture, while allowing puncture of the atrial septum during surgery, existing methods generate high temperatures at the guidewire tip due to its small surface area. These high temperatures can damage the atrial septum and the sheath tip, potentially causing it to melt and fall off, leading to thrombotic complications. This invention utilizes a guidewire body composed of a core wire, a sheath, and a hydrophilic coating, combined with a bending sheath and endovascular ultrasonic puncture for atrial septal puncture. By using the puncture point at the end of the guidewire body to mechanically damage the atrial septum and achieve the puncture path, it avoids high temperatures and related risks, resulting in better safety and higher efficiency during atrial septal puncture. Furthermore, this guidewire structure saves a needle compared to conventional atrial septal puncture needles with sheaths, reducing related consumable costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a transseptal puncture guidewire according to the present invention;

[0020] Figure 2 This utility model describes a guidewire for puncturing atrial septum. Figure 1 Enlarged view of point A in the middle.

[0021] The annotations in the attached figures are explained as follows:

[0022] 1. Soft tip; 2. Guide wire body; 201. Core wire; 202. Coating layer; 203. Hydrophilic coating; 3. Puncture section. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] like Figures 1-2 As shown, an atrial septal puncture guidewire in this embodiment includes a guidewire body 2, which includes a core wire 201, a wrapping layer 202 wrapped around the core wire 201, and a hydrophilic coating 203 wrapped around the wrapping layer 202. One end of the core wire 201 is a puncture section 3, which ensures convenient puncture of the patient's atrial septum during use. The other end of the core wire 201 is a soft head 1, the shape of which can be adjusted according to actual needs. It can be straight or pre-bent, facilitating advancement without damaging blood vessels.

[0025] like Figures 1-2 As shown, in this embodiment, the core wire 201 is made of stainless steel wire, and the puncture part 3 is an exposed conical structure. The core wire 201 can effectively ensure the structural strength of the guidewire. The soft head 1 is located inside the wrapping layer 202 and is bonded to the wrapping layer 202. The wrapping layer 202 is bonded to the core wire 201. The wrapping layer 202 is made of PU material and has good flexibility and biocompatibility, providing appropriate protection and support. The hydrophilic coating 203 is bonded to the wrapping layer 202 and is made of PAA material. The hydrophilic coating 203 can improve the operational performance of the guidewire.

[0026] The specific implementation process of this embodiment is as follows: When it is necessary to puncture the patient's atrial septum during the operation, the adjustable bending delivery sheath is first used in conjunction with intracavitary ultrasound to find the accurate location of the foramen ovale and fix the adjustable bending sheath. Then, the puncture part 3 at the end of the guidewire body 2 is inserted into the sheath to perform atrial septal puncture. After the puncture is completed, the guidewire body 2 is withdrawn and converted into a soft head 1 to guide the sheath into the left atrium to prevent damage to the myocardium or blood vessel wall. During the above puncture process, while using the puncture part 3 at the end of the guidewire body 2 to mechanically damage the atrial septum to achieve the puncture approach, it will not cause high temperature and related risks, making the atrial septum in the patient's body safer and the puncture efficiency higher. In addition, compared with the existing conventional atrial septal puncture needle with sheath puncture, this type of puncture guidewire can save a needle and save related consumable costs.

[0027] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A guidewire for transseptal puncture, characterized in that: The guidewire body (2) includes a core wire (201), a wrapping layer (202) wrapped around the outside of the core wire (201), and a hydrophilic coating (203) wrapped around the outside of the wrapping layer (202). One end of the core wire (201) is a puncture part (3), and the other end of the core wire (201) is a soft head (1).

2. The guidewire for septal puncture according to claim 1, characterized in that: The core wire (201) is made of stainless steel wire, and the piercing part (3) is an exposed conical structure.

3. The guidewire for septal puncture according to claim 1, characterized in that: The soft head (1) is located inside the wrapping layer (202).

4. The septal puncture guidewire according to claim 3, characterized in that: The soft head (1) is bonded to the wrapping layer (202).

5. The septal puncture guidewire according to claim 4, characterized in that: The wrapping layer (202) is bonded to the core wire (201), and the wrapping layer (202) is made of PU material.

6. The septal puncture guidewire according to claim 4, characterized in that: The hydrophilic coating (203) is bonded to the encapsulation layer (202).

7. The septal puncture guidewire according to claim 6, characterized in that: The hydrophilic coating (203) is made of PAA material.

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