Puncture needle cylinder and puncture needle for ultrasonic development

Abstract

The utility model relates to medical puncture device equipment, in particular to a puncture needle cylinder and a puncture needle for ultrasonic development. The puncture needle cylinder and the puncture needle comprise a needle cylinder body, the needle cylinder body is provided with an inner tube axially penetrating through the needle cylinder body, and the needle cylinder body comprises a puncture needle head end and a tail end; the cavity is formed in the needle cylinder body and extends along the needle cylinder body; and the reflecting part is at least arranged on the outer wall of the puncture needle head end of the needle cylinder body and is provided with a rough surface. According to the puncture needle cylinder and the puncture needle, ultrasonic imaging of the inner tube can be carried out after ultrasonic developing agents are injected into the cavity, meanwhile, the structural reflection part carries out ultrasonic imaging on the puncture needle head end, and the puncture needle head end of the puncture needle cylinder and a needle passage can be developed more clearly under ultrasonic scanning through the design that developing is overlaid inside and outside the needle cylinder; the structure is simple, surgical operation is easy and convenient, and surgical time is greatly saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical puncture device equipment especially a puncture needle cylinder and puncture needle for ultrasonic visualization. BACKGROUND

[0002] Puncture needle is the interventional instrument commonly used in modern surgery and minimally invasive operation. With the ultrasound real-time monitoring and the puncture technology being continuously used in the operation environment, the ultrasound image guided puncture becomes the widely used means in the clinic, and the technology aims at imaging the puncture needle, especially the needle tip part and the human puncture part through the ultrasonic imaging technology to accurately guide the puncture operation. However, because the surface of the conventional puncture needle is too smooth, the puncture needle image cannot be clearly and effectively displayed when the ultrasound guided puncture is performed, so the puncture needle path cannot be clearly indicated, and the puncture operation cannot be accurately monitored and guided. Therefore, there is great limitation in use, and the puncture effect is also affected. When the ultrasound guided puncture is used, the needle image is often difficult to effectively display because the surface of the needle is smooth and the incident sound wave is reflected. In many cases, the puncture needle path cannot be clearly displayed, and the puncture effect is greatly reduced.

[0003] In order to be well imaged in the ultrasonic environment, some existing puncture needles are usually roughened on the surface of the puncture needle, such as pressing ring, sand blasting and the like. The development effect can be obviously improved. However, in the operation environment with relatively high development effect requirement, the puncture needle tip and the needle path need to be clearly developed. The existing puncture needle cannot meet the requirement. Some designers add a support tube in the puncture needle tube to device contrast medium to enhance the development effect. However, the structure is complex, the processing and manufacturing difficulty is great, and the structure also increases the operation puncture steps and slows down the operation process.

[0004] Some designers design a liquid injection hole and an exhaust hole on the puncture needle sheath. The contrast medium is injected through the liquid injection hole, and then sealed. The sealing difficulty is great. Because the liquid injection hole and the exhaust hole are designed at two ends of the puncture needle sheath, one end will enter the human body with the puncture needle. The contrast medium may enter the blood vessels of the human body through the liquid injection hole to cause an allergic reaction. The sealing structure is small, and enters the human body, which also increases the risk of operation.

[0005] The above content is the technical implementation background of the present application, and does not represent the disclosed technical content in the prior art. UTILITY MODEL CONTENT

[0006] In the first aspect, the embodiments of the present application provide a puncture needle cylinder for ultrasonic visualization, which solves the problems of complex structure and great processing difficulty of the existing puncture needle in displaying the puncture needle and the needle path.

[0007] The puncture needle cylinder for ultrasonic visualization comprises:

[0008] The needle barrel body is a hollow tubular structure in the shape of a needle tube, and has a tube wall and a first end and a second end at both ends of the tube wall, the first end is a needle head structure, the second end is connected to a needle barrel handle, the needle barrel body has an inner tube that extends through the needle barrel body in the axial direction, and the inner tube is used to accommodate a needle tip of a puncture needle core that penetrates from the second end to the first end;

[0009] The cavity is provided in the tube wall of the needle barrel body and extends along the tube wall of the needle barrel body, and is used to accommodate an ultrasonic contrast agent;

[0010] The reflection part is provided on the needle barrel body and has a rough surface that covers at least the outer surface near the first end of the needle barrel body.

[0011] Due to the above structure, the puncture needle barrel of the present application can inject an ultrasonic contrast agent into the cavity and then perform ultrasonic imaging of the inner tube, and the structure reflection part reflects the ultrasonic imaging of the puncture needle head end, the superposition of the inside and outside of the needle barrel allows the puncture needle head end and the needle channel of the puncture needle barrel to be more clearly visualized under ultrasonic scanning, the structure is simple, the operation is simple, the operation time is greatly saved, and the contrast agent does not have the risk of entering the human body during the puncture operation, and the contrast agent can be replaced at any time.

[0012] In a possible implementation, the needle barrel body and the cavity are integrally formed.

[0013] In a possible implementation, the outer wall of the needle barrel body near the second end is provided with a transfusion port communicating with the cavity.

[0014] In a possible implementation, the transfusion port is provided with a sealing member for closing the transfusion port.

[0015] In a possible implementation, the transfusion port is provided on a transfusion tube on the outer wall of the needle barrel body, the transfusion tube communicates with the cavity, the transfusion port is located on the end face of the transfusion tube, the end of the transfusion tube is provided with a reverse structure extending laterally from the tube wall of the transfusion tube, and the sealing cover is an elastic rubber cover.

[0016] In a possible implementation, the needle barrel handle is provided with a hollow part communicating with the inner tube of the needle barrel body.

[0017] In a possible implementation, the reflection part is a diamond-shaped mesh pattern provided on the outer wall of the needle barrel body near the first end.

[0018] In a possible implementation, the diamond-shaped mesh pattern is protruding or recessed from the outer surface of the needle barrel body and is in an integral structure with the outer surface of the first end of the needle barrel body.

[0019] Secondly, embodiments of this application also disclose a puncture needle for imaging, comprising the puncture needle barrel disclosed in the first aspect above, wherein a puncture needle core is provided in the inner tube of the puncture needle barrel.

[0020] In one possible implementation, the end of the puncture needle core is provided with a needle core handle. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the external structure of the puncture needle according to the first embodiment of this application;

[0022] Figure 2 This is a cross-sectional structural diagram of the first embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the syringe handle structure according to the first embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the infusion port sealing structure according to the first embodiment of this application;

[0025] Figure 5 This is a schematic diagram of the puncture needle core structure according to the second embodiment of this application;

[0026] Figure 6 This is a schematic diagram of the overall assembly cross-sectional structure of the puncture needle according to the second embodiment of this application. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be described in detail below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] The first embodiment of this application relates to a method based on the ultrasonic imaging requirements of the puncture needle tip and needle path, which can provide accurate ultrasonic images to guide the visualization of puncture surgery.

[0029] like Figure 1 and Figure 2 As shown, a puncture needle 1 for ultrasound imaging according to a first embodiment of this application includes:

[0030] The needle cylinder body 2 is a hollow tubular structure in the shape of a needle tube, and has a tube wall 21 and a first end 22 and a second end 23 at both ends of the tube wall, the first end 22 is a needle head structure, the second end 23 is connected to the needle cylinder handle 3, the needle cylinder body 2 has an inner tube 24 axially through the needle cylinder body, and the inner tube 24 is used to accommodate the needle tip of the puncture needle core from the second end 23 to the first end 22;

[0031] The cavity 4 is provided in the tube wall 21 of the needle cylinder body, extends along the tube wall 21 of the needle cylinder body, and is used to accommodate the ultrasonic contrast agent.

[0032] The reflection part 5 is provided on the needle cylinder body 2, has a rough surface, and covers at least the outer surface near the first end 22 of the needle cylinder body 2.

[0033] In the drawings of the embodiment, due to the length of some parts being too large, it is not convenient to display the detailed structure, so the length part is intercepted, which does not represent the actual length.

[0034] The puncture needle cylinder in the embodiment has a part equivalent to a puncture needle sheath, and is sleeved with the puncture needle core during the puncture operation, which is different from some puncture needle sheaths. The needle cylinder body 2 of the embodiment has a first end 22, which is a needle head structure formed by machining a bevel structure at one end of the needle cylinder body 2, and can cooperate with the puncture needle core to puncture the skin and tissue. Therefore, in the puncture process, imaging of the outer wall and the inner tube of the first end 22 of the puncture needle cylinder by ultrasonic waves can realize accurate guidance of the puncture process. Based on this purpose, the needle cylinder body 2 in the embodiment is internally provided with a cavity 4. Since the needle cylinder body 2 is a hollow tubular structure, the cavity 4 is provided in the tube wall 21 of the needle cylinder body 1 and extends along the tube wall 21 of the needle cylinder body 1. After the cavity 4 is set, the ultrasonic contrast agent is injected into the cavity 4, and the shape of the cavity 4 is developed under ultrasonic waves. Since the cavity 4 is parallel to the inner tube 24 and the distance between them is close, the development of the cavity 4 is basically equivalent to the development of the inner tube 24. The cavity structure can effectively develop the inner tube 24 of the puncture needle cylinder.

[0035] It can be understood that the puncture needle cylinder 1 in the embodiment itself is a needle tube structure with a needle tip and an inner tube, and the inner tube is used to accommodate the puncture needle core.

[0036] The puncture needle barrel in the embodiment can be made of various materials and should have good physical and chemical properties and be stable. It will not be decomposed or deformed under the action of human body fluid and medical chemical products. It should also have good structural strength to avoid bending or breaking during operation to ensure the safety of the patient's body. For example, the puncture needle barrel 1 in the embodiment can be made of stainless steel, titanium steel, or hard PVC, PE, or other plastic materials.

[0037] Here, in order to comprehensively explain the differences and effects of the present embodiment and the prior art, a scheme of storing ultrasonic contrast agent in the type cavity of the puncture needle outer sheath is introduced. Part of the main function of the puncture needle outer sheath is to be set outside the puncture needle. The puncture needle core passes through the puncture needle outer sheath, and the needle tip is exposed outside the puncture needle outer sheath. The exposed part of the puncture needle core is used for puncture. The distance between the needle tip part and the end of the puncture needle outer sheath is a certain distance. Correspondingly, the distance between the needle tip part and the visible type cavity is a certain distance. Therefore, even if the type cavity is provided in such a puncture needle outer sheath to store ultrasonic contrast agent, the inner tube of the needle tip part of the whole puncture needle cannot be accurately imaged. The error of this part of the distance makes the imaging of the end of the puncture needle in the operation process not truly reflect the position of the end of the puncture needle, which has safety hazards in this case.

[0038] In the present embodiment, the needle barrel body 2 itself has a needle head structure of the first end 22, and the type cavity 4 directly extends to the position of the first end 22. Therefore, the ultrasonic contrast agent in the type cavity 4 in the present embodiment can accurately reflect the position of the end of the inner tube 24 of the needle barrel body 2 after imaging, improving the accuracy of ultrasonic image display.

[0039] The basic structural requirement of the type cavity 4 is to extend to the first end 22 of the needle barrel body 2. The type cavity 4 is a cavity in which the ultrasonic contrast agent can flow freely. The type cavity 4 is formed between the outer wall and the inner wall of the needle barrel body 2. In order to facilitate structural processing, the type cavity 4 at the end of the needle barrel body 2 can be made into an open structure, integrated by end face welding, or closed when assembled with a handle or other components.

[0040] Preferably, in the present embodiment, the needle barrel body, the type cavity, and the reflection part are integrally formed. The integrally formed structure can be processed and formed at one time, or multiple components can be manufactured and then processed into an integrated structure. The integrally formed structure is beneficial to the structural strength of the needle barrel body, smoothly piercing and passing through human tissues.

[0041] After injecting the ultrasonic contrast agent into the type cavity, the type cavity can be well imaged by the ultrasonic contrast agent under the irradiation of ultrasonic waves to represent the position and state of the inner tube 24.

[0042] To ensure good imaging of the needle tip of the puncture syringe 1, a reflective portion 5 is provided on the outer wall of the first end portion 22 of the puncture syringe 1 in this embodiment. The reflective portion 5 has a rough surface, which can be a frosted or textured surface made on the outer wall of the first end portion 22, or a frosted layer attached to the outer wall of the first end portion 22 to form a rough surface. In this embodiment, based on secondary processing of the first end portion 22, a mesh pattern is imprinted on its surface, with a diamond-shaped mesh recessed into the surface of the first end portion 22, to provide good feedback for ultrasonic irradiation at different angles.

[0043] In practical applications, the coverage area of ​​the rough surface on the reflective part 5 is based on the area that actually needs to be visualized during surgery. The entire outer surface of the puncture needle 1 can be covered by the rough surface to form a reflective part, or it can be set only in a part of the puncture needle 1. Since this embodiment is mainly designed for the need to visualize the area of ​​the first end 22 of the puncture needle 1, the reflective part 5 is set in a part of the area of ​​the first end 22 of the puncture needle 1.

[0044] Due to the above structure, the puncture needle of the first embodiment of this application can perform ultrasonic imaging of the inner tube after injecting ultrasonic contrast agent into the cavity. At the same time, the structural reflective part provides ultrasonic imaging of the puncture needle tip. The superimposed imaging design inside and outside the needle can make the puncture needle tip and needle path of the puncture needle clearer under ultrasonic scanning. The structure is simple, the surgical operation is convenient, and the operation time is greatly reduced.

[0045] To facilitate the installation and use of the puncture needle cartridge 1, such as Figure 3 As shown, in this embodiment, the end of the syringe body 2 is provided with a syringe handle 3, and the syringe handle 3 has a hollow portion 31 that is connected to the inner tube of the syringe body. The syringe body 2 and the syringe handle 3 are fixed as one piece, and the hollow portion 31 in the syringe handle 3 communicates with the inner tube 24 in the syringe body 2. The puncture needle core can be inserted through the hollow portion 31 of the syringe handle 3 and pass through the inner tube 24 of the syringe body 2, so that the needle tip of the puncture needle core is flush with the needle tip of the puncture syringe 1, forming the overall structure of the puncture needle. Generally, the syringe handle 3 has a block-shaped structure that is easy to hold or clamp or fix with a robotic arm, and has an extended length for gripping or fixing.

[0046] Based on the above overall and component structure, this embodiment also provides a preferred replaceable injection method for the injection of ultrasound contrast agent. This method relies on a specific structure to enable the replacement of ultrasound contrast agent during or after surgery.

[0047] Ultrasound imaging agent, namely ultrasound contrast agent, is a kind of substance for enhancing the effect of ultrasound imaging. The main principle of ultrasound contrast agent is to enhance the Doppler ultrasound signal by using the strong scattering characteristics of its micro-bubbles or microparticles to ultrasound waves, thereby improving the clarity and resolution of ultrasound images. However, the ultrasound imaging agent using micro-bubbles to scatter ultrasound waves has a short time effectiveness, and in a long duration surgery, it cannot effectively maintain the imaging effect. Therefore, in the embodiment, a liquid outlet 6 communicating with the cavity is arranged on the outer wall of the needle cylinder body 2 close to the second end 23. The ultrasound imaging agent in the cavity 4 can be extracted under negative pressure through the liquid outlet 6, and then new ultrasound imaging agent can be injected to achieve the effect of continuous and effective imaging. The liquid outlet 6 is arranged on the needle cylinder body 2 close to the second end 23, so that the liquid outlet 6 is exposed outside the human body during and after the puncture process, and the external replacement operation of the ultrasound imaging agent can be realized without invasion into the body, which simplifies the surgical process and avoids the leakage of contrast agent into the human body during the operation, thereby ensuring the safety of the operation.

[0048] In practical application, the liquid outlet 6 is directly arranged on the outer wall of the needle cylinder body 2 to theoretically realize the replacement of the ultrasound imaging agent. However, it is inconvenient to directly act on the needle cylinder body 2 in operation. In order to more conveniently replace the imaging agent, in combination with Figure 3 and Figure 4 , in the embodiment, the liquid outlet 6 is arranged on the liquid outlet pipe 7 extending outward from the outer wall of the needle cylinder body 2. The liquid outlet pipe 7 communicates with the cavity 4, and the liquid outlet 6 is located on the end face of the liquid outlet pipe 7.

[0049] After arranging the liquid outlet pipe 7 extending outward from the outer wall of the needle cylinder body 2, the ultrasound imaging agent can be extracted and replaced on the liquid outlet pipe 7, the operation area is larger, and it is more convenient to connect auxiliary components for operation.

[0050] In order to avoid the ultrasound imaging agent from flowing out of the liquid outlet accidentally during the operation, in the embodiment, a sealing member 8 closing the liquid outlet 6 is arranged on the liquid outlet 6. The sealing member 8 can be arranged according to the shape and structure of the liquid outlet 6, such as a rubber plug, a rubber cap, a rubber cap, etc. As long as it can effectively close the liquid outlet 6.

[0051] In the embodiment, a feasible and preferred sealing structure of the liquid outlet 6 is provided. The end of the liquid outlet pipe 7 is provided with a reverse buckle structure 71 extending laterally from the pipe wall of the liquid outlet pipe. The sealing cap 8 is a rubber cap. The rubber cap is fixed and sealed on the reverse buckle structure 71 by elasticity.

[0052] In the second aspect, as shown in Figure 5 and Figure 6As shown, the embodiment of the present application also discloses a puncture needle for developing, comprising the puncture needle barrel 1 disclosed in the first embodiment, and a puncture needle core 9 is arranged in the inner tube of the puncture needle barrel. In order to reasonably cooperate with the structure of the first embodiment, the puncture needle core 9 in the second embodiment has a needle core handle 91, the puncture needle core 9 is inserted into the inner tube 24 in the needle barrel body 2 from the hollow part 31 in the needle barrel handle 3, until the needle tip of the puncture needle core reaches the state of being flush or close to flush with the needle tip on the needle barrel body 2 including the first end 22. At the same time, the needle core handle 91 is assembled with the tail end of the needle barrel handle 3.

[0053] The above is only the preferred embodiment of the embodiment of the present application, and does not limit the disclosure range of the embodiment of the present application. Any equivalent structure or equivalent flow transformation made by using the specification and drawings of the embodiment of the present application, or directly or indirectly applied in other related technical fields, is also included in the patent protection range supported by the embodiment of the present application.

Claims

1. A puncture needle for ultrasonic imaging, characterized in that, include: The syringe body has a hollow tubular structure in the shape of a needle tube. The syringe body has a tube wall and a first end and a second end located at both ends of the tube wall. The first end is a needle tip structure, and the second end is connected to the syringe handle. The syringe body has an inner tube that axially penetrates the syringe body. The inner tube is used to accommodate the needle tip of the puncture needle core, which is inserted from the second end to the first end. A cavity, located within the tube wall of the syringe body and extending along the tube wall of the syringe body, is used to contain an ultrasonic contrast agent; A reflective part is provided on the syringe body, has a rough surface, and at least covers the outer surface of the first end near the syringe body.

2. The puncture needle for ultrasonic imaging as described in claim 1, characterized in that, The syringe body and cavity are integrally molded structures.

3. The puncture needle for ultrasonic imaging as described in claim 1, characterized in that, The syringe body has an infusion port on its outer wall near the second end, which communicates with the cavity.

4. The puncture needle for ultrasonic imaging as described in claim 3, characterized in that, The infusion port is provided with a seal for closing the infusion port.

5. The puncture needle for ultrasonic imaging as described in claim 4, characterized in that, The infusion port is located on the infusion tube on the outer wall of the syringe body. The infusion tube is connected to the cavity. The infusion port is located on the end face of the infusion tube. The end of the infusion tube is provided with an inverted structure extending laterally from the tube wall. The sealing cap is an elastic rubber cap.

6. The puncture needle for ultrasonic imaging as described in claim 5, characterized in that, The syringe handle has a hollow portion that communicates with the inner tube of the syringe body.

7. The puncture needle for ultrasonic imaging as described in any one of claims 1-6, characterized in that, The reflective part is a diamond-shaped mesh pattern provided on the outer wall of the syringe body near the first end.

8. The puncture needle for ultrasonic imaging as described in claim 7, characterized in that, The diamond-shaped mesh pattern protrudes or recesses on the outer surface of the syringe body and forms an integral structure with the outer surface of the first end of the syringe body.

9. A puncture needle, characterized in that, The puncture needle cylinder includes any one of claims 1-8, wherein a puncture needle core is provided in the inner tube of the puncture needle cylinder.

10. The puncture needle as described in claim 9, characterized in that, The end of the puncture needle core is provided with a needle core handle. When the puncture needle core is inserted into the puncture syringe, the needle core handle is in contact with the syringe handle.

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