Nerve block puncture needle and guiding device thereof

Abstract

The invention provides a nerve block puncture needle and a guiding device thereof. The guiding device comprises a bottom plate, two parallel sliding grooves with opposite openings are fixed to the top face of the bottom plate, an ultrasonic detection opening is formed in the area between the two sliding grooves, and a puncture needle guiding hole is formed in the position close to the end of the ultrasonic detection opening; the probe positioning assembly comprises a containing frame with the bottom located in the ultrasonic detection opening and sliding strips installed on the two sides of the containing frame, the containing frame is used for being inserted into the front end of the ultrasonic probe, and the sliding strips are arranged in the sliding grooves in a sliding mode. The puncture needle comprises a puncture needle body and the guide device, and the needle head of the puncture needle body can penetrate through the puncture needle guide hole. Reflection rings are arranged on the puncture needle body at intervals, and a reflection block with a plurality of inclined faces is arranged on the needle point part. The distance between the ultrasonic probe and the puncture needle can be conveniently adjusted, the puncture needle of a specific structure is arranged, and therefore the developing effect of nerve block puncture under ultrasonic guidance is ensured.

Description

Technical Field

[0001] This disclosure relates to the field of medical devices, specifically a nerve block puncture needle and its guiding device. Background Technology

[0002] Nerve blocks are challenging and can lead to serious complications, thus requiring precise puncture techniques. Currently, ultrasound-guided devices are commonly used to locate the puncture needle, thereby reducing the difficulty of nerve blocks and minimizing complications. Existing puncture needles often produce unclear ultrasound images during use. The main reasons are: 1. The distance between the puncture needle and the ultrasound probe is too large or too small, and the insertion depth and angle are difficult to control, making it difficult for the needle to contact and reflect the ultrasound waves; 2. The needle surface is smooth, especially when the needle is at an oblique angle to the ultrasound waves, causing the probe to receive little or no echo, resulting in unclear or inaccurate imaging. Summary of the Invention

[0003] The main objective of this disclosure is to provide a nerve block puncture needle and its guiding device to solve or partially solve the technical problems pointed out in the background art. To this end, this disclosure provides the following technical solution:

[0004] In a first aspect, this disclosure provides a guiding device for a nerve block puncture needle, comprising:

[0005] The base plate has two parallel sliding grooves with openings facing each other fixed on its top surface. An ultrasonic detection port is opened in the area between the two sliding grooves, and a puncture needle guide hole is opened near the end of the ultrasonic detection port.

[0006] The probe positioning assembly includes a receiving frame with its bottom located inside the ultrasonic detection port and slide bars installed on both sides of the receiving frame. The receiving frame is used to insert the front end of the ultrasonic probe, and the slide bars are slidably disposed in the slide groove.

[0007] In at least one embodiment, the receiving frame is provided with a clamping mechanism, which includes a clamping plate parallel to one inner side of the receiving frame, a spring clamped between the inner side and the clamping plate, and a barrier surrounding the spring and fixedly connected between the edge of the clamping plate and the inner sidewall of the receiving frame, wherein the barrier is made of a flexible material.

[0008] In at least one embodiment, the receiving frame is a square frame with two inner sides parallel to the slide groove, and the clamping mechanism is provided with two clamping mechanisms located on the aforementioned two inner sides parallel to the slide groove; the slide bar is fixed with a short shaft facing the side of the receiving frame, and the end of the short shaft passes through the receiving frame and extends into the surrounding area of ​​the enclosure.

[0009] In at least one embodiment, one end of the spring is fitted onto the short shaft.

[0010] In at least one embodiment, a screw is threaded onto the slide groove, the screw being located on the outside of the bottom of the slide groove and having its end extending into the slide groove.

[0011] In at least one embodiment, the puncture needle guide hole is provided in two places and is arranged adjacent to each other along the sliding direction of the slide bar.

[0012] In at least one embodiment, the top inner chamfer of the puncture needle guide hole is a bevel.

[0013] In at least one embodiment, the distance between the receiving frame and the puncture needle guide hole ranges from 1 to 5 cm.

[0014] Secondly, this disclosure also provides a nerve block puncture needle, including a puncture needle body and the aforementioned guiding device, wherein the needle tip of the puncture needle body can pass through the puncture needle guide hole.

[0015] In at least one embodiment, the outer side of the needle tip of the puncture needle body is provided with protruding reflective rings at intervals, and the tip of the needle tip of the puncture needle body is provided with reflective blocks, and the top of the reflective blocks is provided with several inclined surfaces; the high point of the inclined surface is located at the center of the reflective block, and the low point is located at the edge of the reflective block.

[0016] The nerve block puncture needle and its guiding device provided in this disclosure can achieve at least the following beneficial effects:

[0017] 1. This disclosure provides a puncture needle guide hole on the base plate for guiding the puncture needle through, and a probe positioning component that can be slidably adjusted to finely adjust the distance between the ultrasound probe and the puncture needle, thereby enabling the puncture needle to maintain a distance from the probe that is conducive to clear display during use.

[0018] 2. This disclosure also sets a reflective ring and a reflective block with multiple reflective surfaces on the needle tip of the puncture needle body, which solves the problem of smooth surface and poor reflection effect of conventional needle tips, and is conducive to obtaining clear and accurate ultrasound imaging effect. Attached Figure Description

[0019] One or more embodiments of this disclosure will now be described by way of example only with reference to the accompanying drawings, in which:

[0020] Figure 1 This is a perspective view of the guiding device and nerve block puncture needle shown in an embodiment of the present disclosure;

[0021] Figure 2 for Figure 1 The main view of the embodiment;

[0022] Figure 3 for Figure 1 Top view of the embodiment;

[0023] Figure 4 for Figure 3 A sectional view along section line AA;

[0024] Figure 5 This is a schematic diagram of the needle tip of a nerve block puncture needle as shown in an embodiment of this disclosure.

[0025] The following numbers are labeled in the diagram: 100, base plate; 110, slide groove; 111, screw; 120, ultrasonic testing port; 130, puncture needle guide hole; 200, probe positioning assembly; 210, receiving frame; 220, slide bar; 221, short shaft; 230, clamping mechanism; 231, clamping plate; 232, spring; 233, enclosure; 300, puncture needle body; 310, reflective ring; 320, reflective block. Detailed Implementation

[0026] The present disclosure will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present disclosure may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure more complete and to fully convey the concept of the present disclosure to those skilled in the art.

[0027] In the description of this disclosure, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure.

[0028] like Figure 1-5 As shown, in at least one embodiment, the guiding device for the nerve block puncture needle includes: a base plate 100, the top surface of which is fixed with two parallel sliding grooves 110 with openings facing each other, an ultrasonic detection port 120 is opened in the area between the two sliding grooves 110, and a puncture needle guide hole 130 is opened near the end of the ultrasonic detection port 120; a probe positioning assembly 200, which includes a receiving frame 210 with its bottom located in the ultrasonic detection port 120, and slide bars 220 installed on both sides of the receiving frame 210, the receiving frame 210 being used to insert the front end of the ultrasonic probe, and the slide bars 220 being slidably disposed in the sliding grooves 110.

[0029] When using it, first place the base plate 100 on the site where nerve block puncture is required, and insert the puncture needle into the skin through the puncture needle guide hole 130. Insert the front end of the ultrasound probe of the ultrasound display device into the receiving frame 210, and then adjust the position by sliding left and right. During the adjustment process, insert the puncture needle while observing the imaging effect. Once the imaging is clear, the position can be left unchanged.

[0030] In one specific implementation, to better accommodate the ultrasound probe, the receiving frame 210 is provided with a clamping mechanism 230, which includes a clamping plate 231 parallel to one inner side of the receiving frame 210, a spring 232 clamped between the inner side and the clamping plate 231, and a barrier 233 surrounding the spring 232 and fixedly connected between the edge of the clamping plate 231 and the inner wall of the receiving frame 210. The barrier 233 is made of a flexible material. The flexible material can be a stretchable and reusable material, or it can be given a specific structure, such as a corrugated polymer. Due to the elastic force of the spring 232, the ultrasound probe can be securely clamped after insertion.

[0031] The receiving frame 210 is a square frame with two inner sides parallel to the slide groove 110. Two clamping mechanisms 230 are provided and located on the aforementioned two inner sides parallel to the slide groove 110. A short shaft 221 is fixed to the side of the slide bar 220 facing the receiving frame 210. The end of the short shaft 221 passes through the receiving frame 210 and extends into the area surrounded by the enclosure 233. The symmetrically arranged two clamping mechanisms 230 allow the ultrasound probe to be placed in the center. Furthermore, due to the rotational connection via the short shaft 221, the entire receiving frame 210 can rotate slightly, allowing for both left-right sliding and fine-tuning of the angle during use.

[0032] Furthermore, one end of the spring 232 is sleeved on the short shaft 221. In this way, the short shaft 221 can serve as both a central shaft for rotational connection and a mounting base for the spring 232, preventing the spring 232 from falling off.

[0033] In one specific implementation, a screw 111 is threaded onto the slide 110. The screw 111 is located on the outer side of the bottom of the slide 110 and its end extends into the slide 110. After sliding adjustment and angle fine-tuning, and after a clear ultrasound-guided imaging effect can be seen, the adjusted position can be fixed by tightening the screw, freeing the hand from holding the ultrasound probe.

[0034] In one specific implementation, two puncture needle guide holes 130 are provided and are arranged adjacent to each other along the sliding direction of the slide bar 220. The two puncture needle guide holes 130 are provided as a backup, especially when a clear imaging effect cannot be seen during the use and adjustment of one hole, allowing for quick replacement with the other hole.

[0035] In one specific implementation, the top inner chamfer of the puncture needle guide hole 130 is beveled. This makes it more suitable for common applications involving the tilted insertion of nerve block puncture needles.

[0036] In one specific implementation, the distance between the receiving frame 210 and the puncture needle guide hole 130 ranges from 1 to 5 cm. Since a distance of about 3 cm is generally the optimal distance for imaging, this distance range encompasses this distance and provides greater adjustment space to accommodate patients with different physical conditions and body types.

[0037] To accommodate the aforementioned guiding device, embodiments of this disclosure also provide a nerve block puncture needle, which includes a puncture needle body 300 and the aforementioned guiding device, wherein the needle tip of the puncture needle body 300 can pass through the puncture needle guide hole 130.

[0038] To ensure effective ultrasound imaging, the outer side of the puncture needle body 300 is provided with protruding reflective rings 310 at intervals, and the tip of the puncture needle body 300 is provided with reflective blocks 320. The top of the reflective blocks 320 has several bevels; the highest point of the bevels is located at the center of the reflective blocks 320, and the lowest point is located at the edge of the reflective blocks 320. Figure 5 The reflector block 320 in the example has a square structure at the bottom and four interlocking sloping surfaces facing different directions at the top, which can better receive and reflect ultrasonic waves.

[0039] It should be understood that all the above embodiments are exemplary and not restrictive. Various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of this disclosure should be within the protection scope of this disclosure.

Claims

1. A guiding device for a nerve block puncture needle, characterized in that, include: The base plate (100) has two parallel sliding grooves (110) fixed on its top surface. An ultrasonic detection port (120) is opened in the area between the two sliding grooves (110). A puncture needle guide hole (130) is opened near the end of the ultrasonic detection port (120). The probe positioning assembly (200) includes a receiving frame (210) with its bottom located inside the ultrasonic detection port (120) and slide bars (220) installed on both sides of the receiving frame (210). The receiving frame (210) is used to insert the front end of the ultrasonic probe, and the slide bars (220) are slidably disposed in the slide groove (110).

2. The guiding device according to claim 1, characterized in that: The receiving frame (210) is provided with a clamping mechanism (230), which includes a clamping plate (231) parallel to one inner side of the receiving frame (210), a spring (232) clamped between the inner side and the clamping plate (231), and a barrier (233) surrounding the spring (232 and fixedly connected between the edge of the clamping plate (231) and the inner wall of the receiving frame (210). The barrier (233) is made of a flexible material.

3. The guiding device according to claim 2, characterized in that: The receiving frame (210) is a square frame with two inner sides parallel to the slide groove (110). The clamping mechanism (230) has two clamping mechanisms located on the two inner sides parallel to the slide groove (110). The slide bar (220) has a short shaft (221) fixed to the side facing the receiving frame (210). The end of the short shaft (221) passes through the receiving frame (210) and extends into the surrounding area of ​​the enclosure (233).

4. The guiding device according to claim 3, characterized in that: One end of the spring (232) is sleeved on the short shaft (221).

5. The guiding device according to claim 1, characterized in that: A screw (111) is threaded onto the groove (110). The screw (111) is located on the outside of the bottom of the groove (110) and its end extends into the groove (110).

6. The guiding device according to claim 1, characterized in that: The puncture needle guide hole (130) is provided in two places and is arranged close to each other along the sliding direction of the slide bar (220).

7. The guiding device according to claim 1, characterized in that: The inner chamfer at the top of the puncture needle guide hole (130) is a bevel.

8. The guiding device according to claim 1, characterized in that: The distance between the receiving frame (210) and the puncture needle guide hole (130) is 1-5cm.

9. A nerve block puncture needle, characterized in that: It includes a puncture needle body (300) and a guide device according to any one of claims 1-8, wherein the tip of the puncture needle body (300) is capable of passing through the puncture needle guide hole (130).

10. The nerve block puncture needle according to claim 9, characterized in that: The puncture needle body (300) has protruding reflective rings (310) spaced apart on the outer side of the needle tip. The needle tip of the puncture needle body (300) is provided with reflective blocks (320). The top of the reflective blocks (320) is provided with several inclined surfaces. The high point of the inclined surface is located at the center of the reflective block (320), and the low point is located at the edge of the reflective block (320).

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