CN201200422Y - Nerve block needle introducer - Google Patents

Abstract

The utility model discloses a nerve block puncture needle guide, which comprises a positioning device installed on an ultrasonic probe. A guiding device for guiding the movement of a puncture needle is fixed on the side wall of the positioning device. The needle tip of the puncture needle is always It is located in the ultrasonic plane and can reach different parts around the nerve. It is easier for the operator to see the needle insertion path and the position of the needle tip, which shortens the operation time and avoids accidentally injuring other tissue structures, which relieves the pain of the patient. This puncture needle guide is suitable for In-plane technology.

Description

Nerve block needle introducer

technical field

The utility model relates to a medical device, in particular to a puncture needle guider for the use of in-plane technology in peripheral nerve block under the guidance of ultrasound.

Background technique

In ultrasound-guided puncture, according to the relative position of the puncture needle and ultrasound probe, it can be divided into in-plane technique (puncture needle and ultrasound probe parallel) and out-of-plane technique (puncture needle and ultrasound probe perpendicular). The in-plane technique is chosen by most anesthesiologists because it can fully visualize the path of needle insertion and the position of the needle tip. At present, most anesthesiologists use free-hand technique when performing ultrasound-guided nerve block, but the puncture needle often moves out of the ultrasound plane during the operation, which prolongs the puncture time and increases the number of punctures, especially for beginners of this technique. This is especially true for doctors, because the inaccurate needle insertion can easily accidentally injure other structures and affect the accuracy of treatment, which brings great pain to patients.

Utility model content

The technical problem to be solved by the utility model is to provide a nerve block puncture needle guide that can shorten the operation time, avoid accidentally injuring other tissues, and accurately locate and puncture.

In order to solve the above-mentioned technical problems, the technical solution of the present utility model is: the nerve block puncture needle guide includes a positioning device installed on the ultrasonic probe, and a guide for guiding the movement of the puncture needle is fixed on the side wall of the positioning device. device.

As an improvement, the positioning device is a fixed ring matching the size of the ultrasonic probe.

As a further improvement, the guide device is two fan-shaped sheets, and a gap is provided between the two fan-shaped sheets, and the gap is in the same plane as the long-axis centerline of the ultrasonic probe, and the size of the gap is the same as that of the ultrasonic probe. The diameter of the above-mentioned puncture needle is suitable, the bottom surface of the two fan-shaped sheets is on the same plane as the bottom surface of the positioning device, and the central angle of the fan-shaped is 90 degrees, and the surface of the two fan-shaped sheets is provided with a scale indicating the angle.

Due to the adoption of the above-mentioned technical scheme, the nerve block puncture needle guide includes a positioning device installed on the ultrasonic probe, and a guide device for guiding the movement of the puncture needle is fixed on the side wall of the positioning device. The probe is fixed, and then the long axis of the puncture needle and the ultrasonic probe is on the same plane through the guide device, so that the needle tip of the puncture needle is always in the ultrasonic plane and can reach different parts around the nerve, which is easier for the operator to see The needle path and needle tip position shorten the operation time and avoid accidentally injuring other tissue structures, which relieves the pain of the patient.

Description of drawings

Fig. 1 is the structural sectional view of the utility model embodiment;

Fig. 2 is the structural principle diagram of the embodiment of the utility model.

Detailed ways

As shown in Figures 1 and 2, the nerve block puncture needle guide includes a positioning device 1 installed on an ultrasonic probe, and a guide device 2 for guiding the movement of the puncture needle is fixed on the side wall of the positioning device 1 .

When in use, the ultrasonic probe 4 is placed in the positioning device 1, that is, fixed in the fixed ring, and then the puncture needle is placed in the guide device 2 on the side wall of the positioning device 1, and the gap 3 between the two fan-shaped stainless steel sheets is 1 mm. The size of the gap 3 is adapted to the diameter of the puncture needle, can pass through the puncture needle, and can allow the puncture needle to move along the gap 3 between the two thin plates, limiting the lateral movement of the puncture needle. When the guide is installed on the ultrasonic probe 4, the guiding device 2 moving in the ultrasonic plane is on the same plane as the long-axis axis of the ultrasonic probe 4, so the gap 3 between the two fan-shaped thin plates is aligned with the long-axis midline of the ultrasonic probe 4 to ensure The puncture needle in the gap is always in the ultrasound plane.

The puncture needle is allowed to move along the gap 3 between the two fan-shaped thin plates so that the needle tip of the puncture needle can reach different parts around the nerve. Since the size of the gap 3 is adapted to the diameter of the puncture needle, the side of the puncture needle can be limited. To ensure that the puncture needle is always in the ultrasound plane. The bottom surface of the two fan-shaped sheets is on the same plane as the bottom surface of the positioning device 1 and the central angle of the fan is 90 degrees. The surfaces of the two fan-shaped sheets are provided with scales indicating the angle, and the fan-shaped guide device 2 enables the operator to It is easier to see the needle path and the position of the needle tip, shorten the operation time, and avoid accidentally injuring other tissues, which reduces the pain of the patient. Of course, the thin plate can be in other shapes, and this puncture needle guide is suitable for in-plane techniques.

Claims (5)

1. Nerve block puncture needle introducer, it is characterized in that: comprise the positioning device (1) that is installed on the ultrasonic probe, the sidewall of described positioning device (1) is fixed with the guiding device that guides puncture needle to move ( 2). 2. The nerve block puncture needle guide according to claim 1, characterized in that: the positioning device (1) is a fixed ring matching the size of the ultrasonic probe. 3. The nerve block puncture needle guide according to claim 1 or 2, characterized in that: the guide device (2) is two fan-shaped sheets, and a gap (3) is provided between the two fan-shaped sheets. 4. The nerve block puncture needle guide as claimed in claim 3, characterized in that: said gap (3) is in the same plane as the long-axis midline of said ultrasonic probe, and the gap (3) The size matches the diameter of the puncture needle. 5. The nerve block puncture needle guide as claimed in claim 3, characterized in that: the bottom surfaces of the two fan-shaped sheets are on the same plane as the bottom surface of the positioning device (1), and the central angle of the fan-shaped slices is 90°. degrees, the surfaces of the two fan-shaped sheets are provided with scales indicating the angles.

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