A percutaneous lumbar vertebral puncture device

Abstract

This utility model relates to the field of percutaneous lumbar puncture technology, specifically a percutaneous lumbar puncture device, including a curved puncture needle with an outer diameter of 2.1 mm and 1.2 mm, and a length of 20 cm. A puncture assembly is provided on one side of the curved puncture needle, and a hollow guidewire is provided on the inner side of the curved puncture needle. The outer diameter of the hollow guidewire is 1 mm, and the length of the hollow guidewire is... The hollow guidewire is 25cm long, and one end of the hollow guidewire is equipped with a 1.5cm metal strip for visualization. The opening of the needle tip of the curved puncture needle of this invention is recessed by 2mm, that is, changed to a side hole, to ensure that when the needle tip touches the posterior edge of the vertebral body, the hollow guidewire can be smoothly passed through the side hole. The length of the curved puncture needle is extended to 20cm to ensure that most lumbar punctures can be fully inserted. The hollow guidewire tip is designed with a 1.5cm metal strip for visualization, which is visualized under intraoperative C-arm X-ray fluoroscopy to help with positioning.

Description

Technical Field

[0001] This utility model relates to the field of percutaneous lumbar puncture technology, and in particular to a percutaneous lumbar puncture device. Background Technology

[0002] Collagenase lysis, also known as intervertebral disc chemonucleolysis, is a technique that involves injecting collagenase into the herniated disc and / or its surrounding tissue to dissolve the collagen tissue, thereby reducing or eliminating the herniation.

[0003] Collagenase was initially injected intradiscally into the lumbar intervertebral disc, but has gradually been changed to extradiscal (the space between the intervertebral disc and the dura mater) injection. This change in injection site makes the application of collagenase safer and its efficacy more certain. It preserves the nucleus pulposus tissue within the intervertebral disc, thus maintaining the shape and stability of the intervertebral disc, while acting on the posterior space of the intervertebral disc to target and dissolve the herniated nucleus pulposus tissue, thereby achieving the purpose of treating intervertebral disc herniation and relieving nerve compression.

[0004] However, due to the high technical requirements of intervertebral disc puncture, and the fact that there is only one approach through the intervertebral foramen, conventional puncture needles are prone to puncturing the dura mater during the procedure, causing collagenase to accidentally enter the dural sac through the puncture needle, which can have disastrous consequences for the nerves. Therefore, it is difficult to popularize this technique at the grassroots level.

[0005] Therefore, we propose a percutaneous lumbar vertebral puncture device. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a percutaneous lumbar vertebral puncture device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A percutaneous lumbar puncture device includes a bent puncture needle with an outer diameter of 2.1 mm and 1.2 mm, a length of 20 cm, a puncture assembly on one side of the bent puncture needle, and a hollow guide wire on the inner side of the bent puncture needle.

[0009] As a further embodiment of this utility model: the outer diameter of the hollow guide wire is 1mm, the length of the hollow guide wire is 25cm, and a 1.5cm metal strip is provided at one end of the hollow guide wire for development.

[0010] As a further improvement of this utility model: a puncture needle outlet is fixedly provided on one side of the bent puncture needle, and the puncture needle outlet is 2mm away from the tip of the bent puncture needle.

[0011] As a further improvement of this utility model: a connector device is provided on the side of the bent puncture needle away from the puncture needle outlet, and a medical 10ml syringe is provided on one side of the connector device.

[0012] Compared with the prior art, this utility model provides a percutaneous lumbar vertebral puncture device, which has the following beneficial effects:

[0013] 1. In this utility model, by installing a puncture assembly, the opening of the needle tip of the curved puncture needle is moved back 2mm, i.e., it is changed to a side hole, to ensure that when the needle tip touches the posterior edge of the vertebral body, the hollow guidewire can be smoothly passed through the side hole. The length of the curved puncture needle is extended to 20cm, ensuring that most lumbar punctures can be fully inserted. The tip of the hollow guidewire is designed with a 1.5cm metal strip for visualization, which is visualized under intraoperative C-arm X-ray fluoroscopy to help with positioning.

[0014] 2. This invention allows for safer and more effective injection of collagenase into the spinal canal, greatly reducing the risk of nerve damage caused by accidental entry into the dural space, lowering the difficulty of surgery, and facilitating the popularization of collagenase nucleolysis technology.

[0015] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a percutaneous lumbar vertebral puncture device proposed in this utility model;

[0017] Figure 2 This is a partially enlarged structural diagram of a percutaneous lumbar vertebral puncture device proposed in this utility model.

[0018] In the diagram: 1. Bent-tipped puncture needle; 2. Hollow guidewire; 3. Puncture needle outlet; 4. Connector device; 5. Medical 10ml syringe. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0021] Example: A percutaneous lumbar puncture device with a curved head, comprising a curved head puncture needle 1, characterized in that: the outer diameter of the curved head puncture needle 1 is 2.1 mm, the outer diameter of the curved head puncture needle 1 is 1.2 mm, the length of the curved head puncture needle 1 is 20 cm, a puncture component is provided on one side of the curved head puncture needle 1, and a hollow guide wire 2 is provided on the inner side of the curved head puncture needle 1.

[0022] like Figures 1-2 As shown, the hollow guidewire 2 has an outer diameter of 1mm and a length of 25cm. One end of the hollow guidewire 2 is equipped with a 1.5cm metal strip for visualization. A puncture needle outlet 3 is fixedly provided on one side of the bent puncture needle 1. The puncture needle outlet 3 is 2mm away from the tip of the bent puncture needle 1. A connector device 4 is provided on the side of the bent puncture needle 1 away from the puncture needle outlet 3. A 10ml medical syringe 5 is provided on one side of the connector device 4. When using the percutaneous lumbar puncture device, the opening of the needle tip of the bent puncture needle 1 is moved back 2mm, i.e., it is changed to a side hole, to ensure that when the needle tip touches the posterior edge of the vertebral body, the hollow guidewire 2 can be smoothly passed through the side hole. The length of the bent puncture needle 1 is extended to 20cm to ensure that most lumbar punctures can be fully inserted. The hollow guidewire 2 is designed with a 1.5cm metal strip for visualization under intraoperative C-arm fluoroscopy to help with positioning.

[0023] Working principle: When using the percutaneous lumbar puncture device with a curved needle tip, the opening of the needle tip of the curved needle 1 is moved back 2mm, i.e., it is changed to a side hole, to ensure that when the needle tip touches the posterior edge of the vertebral body, the hollow guidewire 2 can be smoothly passed through the side hole. The length of the curved needle 1 is extended to 20cm to ensure that most lumbar punctures can be fully inserted. The tip of the hollow guidewire 2 is designed with a 1.5cm metal strip for visualization, which is visualized under intraoperative C-arm X-ray fluoroscopy to help with positioning.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A percutaneous lumbar bend puncture device comprising a bend puncture needle (1), characterized in that The outer diameter of the bent puncture needle (1) is 2.1 mm, the outer diameter of the bent puncture needle (1) is 1.2 mm, the length of the bent puncture needle (1) is 20 cm, a puncture component is provided on one side of the bent puncture needle (1), and a hollow guide wire (2) is provided on the inner side of the bent puncture needle (1).

2. The percutaneous lumbar bend puncture device according to claim 1, characterized in that The hollow guide wire (2) has an outer diameter of 1 mm and a length of 25 cm. One end of the hollow guide wire (2) is provided with a 1.5 cm metal strip for imaging.

3. The percutaneous lumbar vertebral puncture device according to claim 1, characterized in that... A puncture needle outlet (3) is fixedly provided on one side of the bent puncture needle (1), and the puncture needle outlet (3) is 2mm away from the tip of the bent puncture needle (1).

4. The percutaneous lumbar vertebral puncture device according to claim 3, characterized in that... The bent puncture needle (1) is provided with a connector device (4) on the side away from the puncture needle outlet (3), and a medical 10ml syringe (5) is provided on one side of the connector device (4).

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