An ultrasound-enhanced visualization trocar needle

Abstract

The utility model provides a kind of enhanced visualization casing puncture needle under ultrasound, comprising: guide needle, guide needle includes casing needle seat and casing needle tube, casing needle tube is installed on casing needle seat, casing needle seat is provided with through-hole in communication casing needle tube, through-hole and casing needle tube internal pipeline intercommunication form through channel, casing needle tube is spiral structure. The puncture needle uses, under ultrasound guidance, using guide needle is punctured, medical staff hand casing needle seat, casing needle tube is punctured, medical staff controls the puncture position of casing needle tube under real-time ultrasound image monitoring, casing needle tube is spiral structure, surface area is larger, ultrasound visualization effect is better, more accurately display the position of casing needle tube, the puncture needle is better in ultrasound visualization effect, while, lumbar anesthesia mode is more simple, guide needle is positioned, lumbar anesthesia needle core is punctured, just need to promote different puncture needle in different stage to complete lumbar anesthesia, reduce the damage to tissue and the risk of cerebrospinal fluid leakage.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to an ultrasound-enhanced contrast cannula puncture needle. Background Technology

[0002] Spinal anesthesia (lumbar puncture) is a common form of anesthesia used for lower abdominal and lower limb surgeries, as well as for labor analgesia. Accurate puncture into the subarachnoid space is a crucial step during spinal anesthesia, typically relying on the anesthesiologist's experience and tactile sense. However, due to individual differences and the complexity of anatomical structures, the success rate of spinal anesthesia is not 100%, and there are certain risks of complications such as bleeding, infection, and nerve damage. To improve the accuracy and safety of spinal anesthesia, ultrasound-guided technology has been introduced. Ultrasound can display the position of the puncture needle and surrounding anatomical structures in real time, helping anesthesiologists to perform the puncture more precisely.

[0003] However, the imaging effect of existing spinal anesthesia needles under ultrasound is not ideal. The main reasons include the poor ultrasonic reflection characteristics of the needle material and the needle design being unfavorable for ultrasound imaging, which limits the widespread application of ultrasound guidance in spinal anesthesia. Existing puncture devices with enhanced ultrasound imaging are inconvenient to use, requiring the needle core to be removed before spinal anesthesia is administered, increasing the operation process and difficulty.

[0004] How to provide a puncture needle for ultrasound-enhanced contrast imaging is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an ultrasound-enhanced imaging cannula puncture needle, so as to solve at least one of the above-mentioned technical problems.

[0006] To solve the above-mentioned technical problems, this utility model provides an ultrasound-enhanced contrast cannula puncture needle, comprising: a guide needle, the guide needle including a cannula needle seat and a cannula needle tube, the cannula needle tube being mounted on the cannula needle seat, the cannula needle seat having a through hole connecting the internal tubing of the cannula needle tube, the through hole and the internal tubing of the cannula needle tube forming a through channel, the cannula needle tube having a spiral structure, the front end of the cannula needle tube having a double spiral structure; and a spinal anesthesia needle core, the length of the spinal anesthesia needle core being at least 2 mm longer than the sum of the lengths of the cannula needle tube and the cannula needle seat, the spinal anesthesia needle core being inserted into the through channel.

[0007] Optionally, the cannula has a double helix structure from 2 cm from the tip to the tip of the cannula, and the cannula is coated with micron-sized metal particles from 2 cm from the tip to the tip of the cannula.

[0008] Optionally, the tip of the cannula is tapered with an inclination angle of 30°.

[0009] Optionally, the outer diameter of the cannula is not less than 22G, and the length of the spinal anesthesia needle core is 3-5mm longer than the sum of the lengths of the cannula and the cannula seat.

[0010] Optionally, the tail end of the spinal anesthesia needle core is provided with a tail seat for connection to the syringe. One end of the tail seat connected to the spinal anesthesia needle core is provided with a retainer along the spinal anesthesia needle core. A retaining block is provided on the side of the retainer away from the tail seat. The tail end of the cannula needle seat is provided with a groove adapted to the retainer. The inner wall of the groove is provided with an "L"-shaped slot adapted to the retaining block. The retainer is sleeved in the groove, and the retaining block is engaged in the slot.

[0011] Optionally, there are two card blocks, which are respectively disposed on opposite sides of the end of the card seat away from the tailstock. There are two card slots that are adapted to the card blocks, which are respectively located on opposite sides of the inner wall of the groove.

[0012] Optionally, the tip of the spinal anesthesia needle core is a cone with an inclination angle of 30° that matches the tip of the cannula needle.

[0013] Optionally, the surface of the tailstock is provided with anti-slip texture.

[0014] Optionally, the spinal anesthesia needle core is made of stainless steel.

[0015] Optionally, the outer diameter of the cannula is 20G, and the outer diameter of the spinal anesthesia needle core is 25G.

[0016] Beneficial effects:

[0017] This utility model provides an ultrasound-guided contrast-enhanced trocar puncture needle. During use, under ultrasound guidance, a guide needle is used for puncture. Medical personnel hold the trocar needle hub and insert the trocar. Under real-time ultrasound image monitoring, the medical personnel control the puncture position of the trocar needle. The trocar needle has a spiral structure, resulting in a larger surface area, better ultrasound imaging, and more accurate positioning of the trocar needle. The double-helix structure at the tip of the trocar needle further increases the surface area, improving the imaging effect of the needle tip and ensuring accurate insertion. During the puncture, the spinal anesthesia needle core is positioned inside the guide needle through the through-hole and the formed through-channel on the trocar needle hub. The tip of the cannula is kept parallel to the tip of the spinal anesthesia needle core. When the needle reaches the epidural space, the guide needle is kept stationary, and the spinal anesthesia needle core is pushed through the space. The portion of the spinal anesthesia needle core that is at least 2 mm longer than the guide needle is inserted into the subarachnoid space. The tail end of the spinal anesthesia needle core is connected to a syringe or injection tubing for the next step of drug injection. If necessary, the cannula needle hub can also be directly connected to the syringe or injection tubing for drug injection through the cannula needle. This puncture needle provides better ultrasound imaging and simplifies the spinal anesthesia method. The guide needle is used for positioning, and the spinal anesthesia needle core is used for puncture. Spinal anesthesia can be completed by pushing different puncture needles at different stages, reducing the risk of tissue damage and cerebrospinal fluid leakage.

[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a cross-sectional schematic diagram of the internal structure provided in an embodiment of this application;

[0021] Figure 2 This is a planar schematic diagram of the guide needle during puncture, provided in an embodiment of this application.

[0022] Figure 3 This is a schematic diagram of the plan view after spinal anesthesia needle core puncture provided in the embodiments of this application;

[0023] Figure 4 This is a cross-sectional schematic diagram of the cannula needle seat provided in an embodiment of this application.

[0024] Figure label:

[0025] 1. Guide pin; 11. Cannula tube; 12. Cannula seat; 121. Groove; 122. Slot;

[0026] 2. Spinal anesthesia needle core; 21. Tailstock; 22. Card holder; 23. Card block. Detailed Implementation

[0027] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments in this specification are within the protection scope of this utility model.

[0028] Furthermore, in the embodiments of this specification, when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component present. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intervening component present.

[0029] Please see Figure 1-4 This embodiment provides an ultrasound-enhanced contrast cannula puncture needle, which includes a guide needle 1, the guide needle 1 including a cannula needle seat 12 and a cannula needle tube 11, the cannula needle tube 11 is mounted on the cannula needle seat 12, the cannula needle seat 12 is provided with a through hole in the internal tubing of the cannula needle tube 11, the through hole and the internal tubing of the cannula needle tube 11 are connected to form a through channel, the cannula needle tube 11 has a spiral structure, the front end of the cannula needle tube 11 has a double spiral structure; a spinal anesthesia needle core 2, the length of the spinal anesthesia needle core 2 is not less than 2 mm longer than the sum of the lengths of the cannula needle tube 11 and the cannula needle seat 12, and the spinal anesthesia needle core 2 is inserted into the through channel.

[0030] Specifically, when using this puncture needle, under ultrasound guidance, the guide needle 1 is used for puncture. Medical personnel hold the cannula needle hub 12 and insert the cannula needle tube 11. Under real-time ultrasound monitoring, the medical personnel control the puncture position of the cannula needle tube 11. The cannula needle tube 11 has a spiral structure, resulting in a larger surface area and better ultrasound imaging, allowing for more accurate positioning of the cannula needle tube 11. The double-helix structure at the tip of the cannula needle tube 11 further increases the surface area, resulting in better needle tip imaging and ensuring accurate needle tip insertion. During the puncture, the spinal anesthesia needle core 2 is positioned inside the guide needle 1 through the through-hole and the formed through-channel on the cannula needle hub 12. The needle tip of the cannula needle tube 11... Keeping the tip of the spinal anesthesia needle core 2 parallel to the puncture point, when the needle reaches the epidural space, keep the guide needle 1 stationary and push the spinal anesthesia needle core 2. Insert the portion of the spinal anesthesia needle core 2 that is at least 2 mm longer than the guide needle 1 into the subarachnoid space. Connect the tail end of the spinal anesthesia needle core 2 to a syringe or injection tubing for the next step of drug injection. If necessary, the cannula needle seat 12 can also be directly connected to the syringe or injection tubing for drug injection through the cannula needle tube 11. This puncture needle provides better ultrasound imaging and simplifies the spinal anesthesia method. The guide needle 1 is used for positioning, and the spinal anesthesia needle core 2 is used for puncture. Spinal anesthesia can be completed by pushing different puncture needles at different stages, reducing the risk of tissue damage and cerebrospinal fluid leakage.

[0031] In some possible implementations, the cannula 11 has a double helix structure from 2 cm from the tip to the tip, and the cannula 11 from 2 cm from the tip to the tip is coated with micron-sized metal particles. The tip of the cannula 11 is tapered with an inclination angle of 30°.

[0032] Specifically, micron-sized metal particles are coated from the tip of the cannula 11 to a point 2 cm behind it to further enhance the ultrasonic imaging effect of the tip of the cannula 11 and to more accurately position the tip of the cannula 11. The micron-sized metal particles can be made of materials such as gold or silver. The tip of the cannula 11 is a cone with an inclination angle of 30°, which also increases the ultrasonic reflective surface and improves the imaging effect.

[0033] In some possible implementations, the outer diameter of the cannula 11 is not less than 22G, and the length of the spinal anesthesia needle core 2 is 3-5mm longer than the sum of the lengths of the cannula 11 and the cannula needle seat 12.

[0034] Specifically, the specification of the puncture needle is generally represented by "G". The larger the number, the finer the puncture needle. The outer diameter of the cannula 11 is not less than 22G, that is, the outer diameter is not less than 0.71mm. The outer diameter of the cannula 11 can be changed according to the needs of use. The outer diameter of the cannula 11 is much smaller than that of a general ultrasound-guided puncture needle, which reduces the risk of tissue damage and cerebrospinal fluid leakage. Under normal circumstances, the cannula 11 is punctured to the epidural space, and then penetrated 3-5mm further to puncture the subarachnoid space for injection.

[0035] In some possible implementations, the tail end of the spinal anesthesia needle core 2 is provided with a tail seat 21 connected to the syringe. A retainer 22 is provided along the spinal anesthesia needle core 2 at the end of the tail seat 21 connected to the spinal anesthesia needle core 2. A retaining block 23 is provided on the side of the retaining block 22 away from the tail seat 21. The tail end of the cannula needle seat 12 is provided with a groove 121 adapted to the retaining block 22. An "L"-shaped slot 122 adapted to the retaining block 23 is provided on the inner wall of the groove 121. The retaining block 22 is fitted into the groove 121, and the retaining block 23 is engaged in the slot 122. There are two retaining blocks 23, respectively located on opposite sides of the end of the retaining block 22 away from the tail seat 21. There are two slots 122 adapted to the retaining blocks 23, respectively located on opposite sides of the inner wall of the groove 121.

[0036] Specifically, the spinal anesthesia needle core 2 needs to slide within the guide needle 1. When using the guide needle 1 for puncture, the spinal anesthesia needle core 2 needs to remain stationary relative to the guide needle 1. The spinal anesthesia needle core 2 is inserted into the groove 121 on the cannula needle seat 12 via a retainer 22. The two retaining blocks 23 on the retainer 22 are positioned within the "L"-shaped groove 122. The long side of the "L"-shaped groove 122 is parallel to the spinal anesthesia needle core 2. When using the cannula needle 11 for puncture, the two retaining blocks 23 are engaged within the short side of the "L"-shaped groove 122, which is perpendicular to the long side. Even if the spinal anesthesia needle core 2 is pushed, it will not move relative to the guide needle 1. When it is necessary to push the spinal anesthesia needle core 2, a slight rotation is required. The moving tailstock 21 rotates the locking blocks 23 on the two locking seats 22 into the long side groove of the "L"-shaped locking groove 122, pushing the spinal anesthesia needle core 2. The locking blocks 23 will move forward in the long side groove of the locking groove 122, that is, the spinal anesthesia needle core 2 with the edge is pushed forward. When the locking blocks 23 move to the top of the locking groove 122, the spinal anesthesia needle core 2 also stops moving at the same time. This setting further ensures the smooth progress of spinal anesthesia puncture and avoids damage caused by the movement of the spinal anesthesia needle core 2 when the guide needle 1 is puncturing. At the same time, the length of the long groove of the locking groove 122 is the distance that the spinal anesthesia needle core 2 extends relative to the guide needle 1. The length of the long groove of the locking groove 122 can be changed to ensure that the spinal anesthesia needle core 2 extends too deeply.

[0037] In some possible implementations, the tip of the spinal anesthesia needle core 2 is a cone with an inclination angle of 30° that matches the tip of the cannula needle tube 11. The surface of the tailstock 21 is provided with anti-slip texture.

[0038] Specifically, when using the guide needle 1 for puncture, the tip of the spinal anesthesia needle core 2 is kept flush with the tip of the cannula 11, and both needle tips are tapered with an inclination angle of 30° to ensure that the two needle tip surfaces are on the same plane, reducing damage caused during puncture. The anti-slip texture of the tailstock 21 facilitates the rotation of the tailstock 21.

[0039] In some possible implementations, the spinal anesthesia needle core 2 is made of stainless steel. The outer diameter of the cannula needle 11 is 20G, and the outer diameter of the spinal anesthesia needle core 2 is 25G.

[0040] Specifically, the outer diameter of the cannula 11 is 20G, which is 0.91mm, and the outer diameter of the spinal anesthesia needle core 2 is 25G, which is 0.51mm.

[0041] Finally, it should be noted that the above embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. All should be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

[0042] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A contrast-enhanced ultrasound-guided cannula puncture needle, characterized in that, include: Guide needle (1), the guide needle (1) includes a cannula needle seat (12) and a cannula needle tube (11), the cannula needle tube (11) is installed on the cannula needle seat (12), the cannula needle seat (12) is provided with a through hole for communicating with the internal pipeline of the cannula needle tube (11), the through hole and the internal pipeline of the cannula needle tube (11) are connected to form a through channel, the cannula needle tube (11) has a spiral structure, and the front end of the cannula needle tube (11) has a double spiral structure; The length of the lumbar anesthesia needle core (2) is not less than 2 mm longer than the sum of the lengths of the cannula needle tube (11) and the cannula needle seat (12), and the lumbar anesthesia needle core (2) is inserted into the through channel.

2. The ultrasound-enhanced visualization trocar needle of claim 1, wherein: The cannula (11) has a double helix structure from 2 cm from the tip to the tip of the cannula (11), and the cannula (11) is coated with micron-sized metal particles from 2 cm from the tip to the tip of the cannula (11).

3. The ultrasound-enhanced visualization trocar needle of claim 2, wherein: The tip of the cannula needle (11) is a cone with an inclination angle of 30°.

4. The ultrasound-enhanced visualization trocar needle of claim 3, wherein: The outer diameter of the cannula (11) is not less than 22G, and the length of the spinal anesthesia needle core (2) is 3-5mm longer than the sum of the lengths of the cannula (11) and the cannula needle seat (12).

5. The ultrasound-enhanced visualization trocar needle of claim 4, wherein: The end of the spinal anesthesia needle core (2) is provided with a tail seat (21) connected to the syringe. The end of the tail seat (21) connected to the spinal anesthesia needle core (2) is provided with a retainer (22) along the spinal anesthesia needle core (2). The side of the retainer (22) away from the tail seat (21) is provided with a retaining block (23). The end of the cannula needle seat (12) is provided with a groove (121) adapted to the retaining block (22). The inner wall of the groove (121) is provided with an "L" shaped retaining groove (122) adapted to the retaining block (23). The retaining block (22) is sleeved in the groove (121), and the retaining block (23) is engaged in the retaining groove (122).

6. The ultrasound-enhanced visualization trocar needle of claim 5, wherein: There are two card blocks (23), which are respectively located on opposite sides of the end of the card seat (22) away from the tail seat (21). There are two card slots (122) that are adapted to the card blocks (23), which are respectively located on opposite sides of the inner wall of the groove (121).

7. The ultrasound-enhanced visualization trocar needle of claim 6, wherein: The tip of the spinal anesthesia needle core (2) is a cone with an inclination angle of 30° that matches the tip of the cannula needle tube (11).

8. The ultrasound-enhanced visualization trocar needle of claim 7, wherein: The surface of the tailstock (21) is provided with anti-slip texture.

9. An ultrasound-enhanced visualization trocar needle according to any one of claims 4-8, wherein: The spinal anesthesia needle core (2) is made of stainless steel.

10. The ultrasound-enhanced visualization trocar needle of claim 9, wherein: The outer diameter of the cannula needle (11) is 20G, and the outer diameter of the spinal anesthesia needle core (2) is 25G.

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