Improved single-bend soft head

Abstract

The utility model discloses an improved single-bend soft head, relates to the technical field of medical instruments, and aims to solve the problems that an elbow at the front end of an existing puncture needle is in a reverse hook shape due to large radian and is not easy to follow up after entering a blood vessel along the puncture needle, and the head end is in the reverse hook shape when a guide wire is withdrawn. And the head end of the guide wire is broken and left in a blood vessel due to cutting by the sharp head end of a puncture needle. The front end of the connecting pipe is fixedly connected with a connector, the front end of the connector is provided with a first guide wire, the front end of the first guide wire is fixedly connected with a second guide wire, the second guide wire is in a large-angle arc shape, the first guide wire (3) is made of hard materials, and the second guide wire (4) is made of soft materials. According to the improved single-bend soft head, the radian of the head bend is increased, follow-up of a guide wire is better facilitated after a puncture needle successfully punctures a blood vessel, the head end is made of the soft material, vascular intima is not prone to being damaged, the head end has the radian, the head end is not prone to entering a non-target collateral vessel, and the head end can easily enter a target collateral vessel selectively under perspective; and the retracement guide wire is not easy to cut by the sharp head end of the puncture needle.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an improved single-bend soft head. Background Art

[0002] The guide wire used in the central venous catheterization kit in clinical practice is a hard-tipped D-type guide wire. The advantages and disadvantages of this guide wire are as follows: after entering the blood vessel along the puncture needle, it is not easily damaged due to the curved tip.

[0003] Currently, during venous puncture, the elbow at the front end of the existing puncture needle is in an inverted hook shape due to its large curvature, which makes it difficult to follow up after the puncture needle enters the blood vessel. The head end is large and most of the materials are hard, which still has the risk of damaging the blood vessel endothelium and causing the endothelial thrombus or plaque to fall off. When the guide wire is withdrawn, the head end is in an inverted hook shape and is easily cut by the sharp head end of the puncture needle, causing the guide wire head end to break and fall into the blood vessel.

[0004] Therefore, an improved single-bend soft head is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an improved single-bend soft head to solve the problem in the above-mentioned background technology that the elbow at the front end of the existing puncture needle is in a reverse hook shape due to its large curvature, which makes it difficult to follow up after the puncture needle enters the blood vessel, and when the guide wire is withdrawn, the tip end is in a reverse hook shape and is easily cut by the sharp tip of the puncture needle, causing the tip end of the guide wire to break and fall into the blood vessel.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an improved single-bend soft head, including a connecting pipe, a connecting head is fixedly connected to the front end of the connecting pipe, a first guide wire is provided at the front end of the connecting head, a second guide wire is fixedly connected to the front end of the first guide wire, and the second guide wire is an arc with a large angle.

[0007] By adopting the above technical solution, the curvature of the head is reduced, which makes it easier for the guide wire to follow up after the puncture needle successfully punctures the blood vessel. The curvature of the head makes it difficult to enter non-target side branch vessels and makes it easy to selectively enter the target side branch vessels under fluoroscopy.

[0008] Furthermore, the rear end of the first guide wire is connected to two branch pipes via a connector and a connecting pipe.

[0009] By adopting the above technical solution, the first guide wire and the two branch pipes are connected through the connector and the connecting pipe.

[0010] Furthermore, a pipe sleeve is provided inside the two branch pipes, and the pipe sleeve has two holes for sleeved on the branch pipes.

[0011] By adopting the above technical solution, the pipe sleeve is used to connect the two branch pipes in parallel.

[0012] Furthermore, the first guide wire is made of a hard material, and the second guide wire is made of a soft material.

[0013] By adopting the above technical solution, the second guide wire at the head end is made of soft material and is not easy to damage the vascular endothelium, and the first guide wire is used to play a certain supporting role at the rear end.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The improved single-bend soft tip has a larger curvature, which is more conducive to the guide wire follow-up after the puncture needle successfully punctures the blood vessel, and the tip is made of soft material and is not easy to damage the vascular endothelium;

[0016] 2. The improved single-bend soft tip has a curvature at the tip that makes it difficult to enter non-target side branch vessels and is easy to selectively enter target side branch vessels under fluoroscopy. The small curvature of the tip makes it difficult for the guide wire to be cut by the sharp tip of the puncture needle when it is withdrawn. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 .

[0019] In the figure: 1. connecting pipe; 2. connecting head; 3. first guide wire; 4. second guide wire; 5. branch pipe; 6. pipe sleeve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in this example, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model is an improved single-bend soft head:

[0022] like Figure 1 and 2As shown: the front end of the connecting tube 1 is fixedly connected to a connector 2, the front end of the connecting head 2 is provided with a first guide wire 3, the front end of the first guide wire 3 is fixedly connected to a second guide wire 4, the second guide wire 4 is in a large-angle arc shape, the rear end of the first guide wire 3 is connected to two branch tubes 5 through the connector 2 and the connecting tube 1, the two branch tubes 5 are provided with a tube sleeve 6, and the tube sleeve 6 has two holes for sleeves on the branch tubes, the first guide wire 3 is made of hard material, the second guide wire 4 is made of soft material, the curvature of the head becomes larger, and it is more conducive to the guide wire follow-up after the puncture needle successfully punctures the blood vessel, and the second guide wire 4 at the head end is made of soft material, which is not easy to damage the vascular endothelium, the head end has a curvature, it is not easy to enter non-target side branch blood vessels, and it is easy to selectively enter the target side branch blood vessel under fluoroscopy, and the head end has a small curvature, and the withdrawn guide wire is not easy to be cut by the sharp head end of the puncture needle.

[0023] Working principle: Figure 1 As shown, the original hook-shaped guide wire is replaced with a first guide wire 3 of a soft material with a large curvature, so that the guide wire will not cause damage to the blood vessel endothelium. When medical staff use the guide wire, the large curvature of the front end can smoothly puncture into the blood vessel without causing damage to the endothelium, and it is not easy to enter small side branch vessels. After the puncture work is completed, there is no risk of damage or cutting to the endothelium due to the sharp head end of the guide wire when it is withdrawn.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An improved single-bend soft head, characterized in that: The invention comprises a connecting pipe (1), the front end of the connecting pipe (1) is fixedly connected to a connecting head (2), the front end of the connecting head (2) is provided with a first guide wire (3), the front end of the first guide wire (3) is fixedly connected to a second guide wire (4), the second guide wire (4) is in the shape of a large-angle arc, the first guide wire (3) is made of a hard material, and the second guide wire (4) is made of a soft material.

2. The improved single-bend soft head according to claim 1, characterized in that: The rear end of the first guide wire (3) is connected to two branch pipes (5) via a connector (2) and a connecting pipe (1).

3. The improved single-bend soft head according to claim 2, characterized in that: A pipe sleeve (6) is provided inside the two branch pipes (5), and the pipe sleeve (6) has two holes for being sleeved on the branch pipes.

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