Puncture needle capable of changing direction

Abstract

The utility model relates to the technical field of medical instruments, in particular to a direction-changeable puncture needle which comprises a bent sleeve, a movable sleeve is sleeved with the bent sleeve, and a supporting needle rod is sleeved with the movable sleeve. According to the puncture needle capable of changing the direction, by installing the bent sleeve, the bent sleeve, the movable sleeve connected with the bent sleeve in a sleeved mode and the supporting needle rod can be inserted into the body of a patient together through the puncture needle, the whole puncture needle is kept to be solid in the puncture process, and then the movable sleeve can have a certain supporting effect on the bent sleeve; after the bent sleeve reaches the periphery of a target area, the supporting needle rod is pulled out, the bent sleeve loses supporting and recovers bending and stretching, and therefore the purposes of changing the direction and reaching the target closed area are achieved, and medical staff can determine the direction of the bent sleeve after stretching through the pointing mark in the using process. The operation time can be obviously shortened, and the pain of a patient is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a puncture needle. Background Technique

[0002] In patients with lumbar disc herniation and lumbar spinal stenosis of the nerve root canal type, for some cases with mild symptoms or unclear responsible segments, clinical practice often requires nerve root puncture and block for diagnosis or treatment.

[0003] At present, all the puncture needles seen clinically are straight. When blocking each nerve root of the lumbar spine, the lateral approach is often used, and the puncture path is relatively long. Moreover, for doctors with less experience, when the direction is not well grasped, there is a risk of damaging abdominal blood vessels or intestines. And when blocking the L5-S1 segment, due to the obstruction of the iliac crest, the lateral puncture is more difficult.

[0004] Therefore, a puncture needle that can change the direction is needed. The posterior approach is adopted, and it enters through the space between the iliac crest and the transverse process of L5-S1. Through a special design in the front, the direction is changed to reach the target blocking area, and drug injection is carried out to achieve the purpose of diagnosis or treatment. During the operation of this puncture needle, not only the risk is small, but the puncture is also relatively simple, which can significantly shorten the operation time and relieve the pain of the patient. Content of the Utility Model

[0005] The purpose of the utility model is to provide a puncture needle to solve the problem that the existing puncture needles are all straight and the operation risk is relatively large when used by doctors with less experience in the above-mentioned background technique. To achieve the above purpose, the utility model provides the following technical solution: a puncture needle, including a bent sleeve, an activity sleeve is sleeved inside the bent sleeve, a support needle rod is sleeved inside the activity sleeve, a pointing mark is fixedly connected to the outer surface of the support needle rod, and a limiting ring is fixedly connected to one end of the activity sleeve.

[0006] Further preferably, the shape of the bent sleeve is a slightly bent pipe with a certain thickness, and one end is a puncture surface. By installing the bent sleeve, the puncture needle can insert the bent sleeve and the activity sleeve and the support needle rod sleeved inside it into the patient's body together, keeping the whole puncture needle solid during the puncture process. Then the activity sleeve can play a certain supporting effect on the bent sleeve and can also be used for drug injection. After the bent sleeve reaches around the target area, pulling out the support needle rod will cause the bent sleeve to lose support and restore its bending and stretching, so as to change the direction and reach the target blocking area. During use, medical staff can use the pointing mark to determine the direction after the bent sleeve stretches, thereby reducing the risk during the operation, the puncture is relatively simple, the operation time can be significantly shortened, and the pain of the patient can be relieved.

[0007] Further preferably, the movable sleeve is made of a softer material than the bent sleeve, can follow the bent sleeve to achieve a slightly bent shape, and can move within the bent sleeve. The other end is a puncture surface. By installing the movable sleeve, after the bent sleeve is inserted, medical staff can pull out the movable sleeve by using the limit ring, thereby facilitating subsequent drug injection.

[0008] Further preferably, the support needle rod is a solid needle rod, and one end is a puncture surface. By installing the support needle rod, the support needle rod can support the outer bent sleeve and the movable sleeve during puncture. After the drug injection is completed, the support needle rod is reinserted, and the whole puncture needle is pulled out, thereby facilitating medical staff to insert or pull out the puncture needle from the patient's body.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] In the present utility model, by installing the bent sleeve, the puncture needle can insert the bent sleeve, the movable sleeve sleeved inside it, and the support needle rod into the patient's body together, keeping the whole puncture needle solid during the puncture process. Then the movable sleeve can play a certain supporting effect on the bent sleeve and can also be used for drug injection. After the bent sleeve reaches around the target area, pulling out the support needle rod will cause the bent sleeve to lose support and return to its bent and extended state, thereby achieving a change in direction and reaching the target closed area. When in use, medical staff can use the pointing mark to determine the direction after the bent sleeve extends, thereby reducing the risk during the operation process. The puncture is relatively simple, the operation time can be significantly shortened, and the pain of the patient can be alleviated.

[0011] In the present utility model, by installing the movable sleeve, after the bent sleeve is inserted, medical staff can pull out the movable sleeve by using the limit ring, thereby facilitating subsequent drug injection.

[0012] In the present utility model, by installing the support needle rod, the support needle rod can support the outer bent sleeve and the movable sleeve during puncture. After the drug injection is completed, the support needle rod is reinserted, and the whole puncture needle is pulled out, thereby facilitating medical staff to insert or pull out the puncture needle from the patient's body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic three-dimensional structure of the present utility model Figure 1 ;

[0014] Figure 2 Schematic three-dimensional structure of the present utility model Figure 2 ;

[0015] Figure 3 Schematic three-dimensional structure of the present utility model Figure 3 ;

[0016] Figure 4 This is a schematic cross-sectional structure diagram of the present utility model.

[0017] In the figure: 1, curved sleeve; 2, movable sleeve; 3, support needle rod; 4, pointing mark; 5, limit ring. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1 - 4 , the present utility model provides a technical solution: a puncture needle, including a curved sleeve 1, a movable sleeve 2 is sleeved inside the curved sleeve 1, a support needle rod 3 is sleeved inside the movable sleeve 2, a pointing mark 4 is fixedly connected to the outer surface of the support needle rod 3, and a limit ring 5 is fixedly connected to one end of the movable sleeve 2.

[0020] In this embodiment, as Figure 1 , Figure 3 and Figure 4 shown, the shape of the curved sleeve 1 is a slightly curved pipe with a certain thickness, and one end is a puncture surface. By installing the curved sleeve 1, the puncture needle can insert the curved sleeve 1 and the movable sleeve 2 and the support needle rod 3 sleeved inside it into the patient's body together, keeping the whole puncture needle solid during the puncture process. Then the movable sleeve 2 can play a certain supporting effect on the curved sleeve 1 and can also be used for drug injection. After the curved sleeve 1 reaches around the target area, pulling out the support needle rod 3 will cause the curved sleeve 1 to lose support and return to its curved and extended state, so as to change the direction and reach the target closed area. When in use, medical staff can use the pointing mark 4 to determine the direction of the curved sleeve 1 after extension.

[0021] In this embodiment, as Figure 1 , Figure 3 and Figure 4 shown, the movable sleeve 2 is softer in material than the curved sleeve 1, can follow the curved sleeve 1 to reach a slightly curved shape, and can move inside the curved sleeve 1. The other end is a puncture surface. By installing the movable sleeve 2, after the curved sleeve 1 is inserted, medical staff can pull out the movable sleeve 2 by using the limit ring 5.

[0022] In this embodiment, as Figure 1 , Figure 3 and Figure 4As shown, the support needle rod 3 is a solid needle rod, and one end is a puncture surface. By installing the support needle rod 3, the support needle rod 3 can support the outer bent sleeve 1 and the movable sleeve 2 during puncture. After the drug injection is completed, the support needle rod 3 is reinserted and the entire puncture needle is withdrawn.

[0023] The usage method and advantages of the present utility model: When in use, the working process of this puncture needle is as follows:

[0024] As Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, first, by installing the bent sleeve 1, the puncture needle can insert the bent sleeve 1 and the movable sleeve 2 sleeved inside it together with the support needle rod 3 into the patient's body, keeping the entire puncture needle solid during the puncture process. Then, the movable sleeve 2 can provide a certain support effect on the bent sleeve 1 and can also be used for drug injection. After the bent sleeve 1 reaches around the target area, pulling out the support needle rod 3 will cause the bent sleeve 1 to lose support and resume its bent extension, thus achieving a change in direction and reaching the target closed area. When in use, medical staff can use the pointing mark 4 to determine the direction after the bent sleeve 1 extends. Then, by installing the movable sleeve 2, it can be realized that after the bent sleeve 1 is inserted, medical staff can pull out the movable sleeve 2 using the limit ring 5. Then, by installing the support needle rod 3, the support needle rod 3 can support the outer bent sleeve 1 and the movable sleeve 2 during puncture. After the drug injection is completed, the support needle rod 3 is reinserted and the entire puncture needle is withdrawn.

[0025] The above shows and describes the basic principles, main features, and advantages of the present utility model. Technical staff in this industry should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and do not limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A puncture needle capable of changing direction, comprising a curved sleeve (1), characterized in that: The interior of the curved sleeve (1) is sleeved with a movable sleeve (2), the interior of the movable sleeve (2) is sleeved with a supporting needle rod (3), the outer surface of the supporting needle rod (3) is fixedly connected with a directional mark (4), and one end of the movable sleeve (2) is fixedly connected with a limiting ring (5).

2. A puncture needle with a changeable direction according to claim 1, characterized in that: The curved sleeve (1) is in the shape of a slightly curved pipe with a certain thickness, and one end of the pipe is a puncture surface.

3. The puncture needle with changeable direction according to claim 1, characterized in that: The movable sleeve (2) is made of a softer material than the curved sleeve (1), can follow the curved sleeve (1) to achieve a slightly curved shape, and can move within the curved sleeve (1), with the other end being a puncture surface.

4. The puncture needle with changeable direction according to claim 1, characterized in that: The supporting needle rod (3) is a solid needle rod, and one end of the supporting needle rod is a puncture surface.

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