Puncture biopsy needle
By designing a puncture biopsy needle with a three-way valve and a negative pressure device, sampling can be completed in one puncture, solving the problems of patient pain and insufficient sample volume in existing technologies, and improving sampling efficiency and testing accuracy.
Patent Information
- Application Number
- CN202422637345.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Current biopsy procedures require two needle pricks, causing pain to patients and resulting in insufficient sample volume. Samples are also prone to falling out during the sampling process, failing to meet sampling requirements.
Design a biopsy needle comprising a three-way valve, an outer needle tube, an inner needle tube, and a negative pressure device. The inner needle tube is fitted inside the outer needle tube, and the three-way valve controls the opening and closing of the port to achieve sample collection in one puncture. The negative pressure device maintains a negative pressure state inside the needle tube to ensure sample aspiration.
To reduce patient suffering, decrease sample spread and infection risk, increase sample volume, and ensure the accuracy of test results.
Smart Images
Figure CN223516373U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field in general, specifically, it relates to a puncture biopsy needle. BACKGROUND
[0002] The biopsy needle is a kind of medical instrument for the biopsy of the tumor of the cone of kidney, liver, lung, breast, thyroid, prostate, pancreas, testis, uterus, ovary, body surface and so on and the biopsy of unknown tumor etc.
[0003] At present, biopsy sampling usually needs to take twice, so that the patient needs to experience twice needle-piercing pain, and the sample quantity of sampling is less, and even the sample of sampling falls in the sampling process, so that the last sample quantity does not meet the sampling requirement. UTILITY MODEL CONTENT
[0004] The application provides a puncture biopsy needle to solve the above technical problems.
[0005] The application provides a puncture biopsy needle, which comprises a three-way valve, an outer needle tube, an inner needle tube and a negative pressure device; the three-way valve comprises a first port, a second port and a third port, the first port and the second port are coaxially arranged; one end of the outer needle tube is connected with the first port, and the other end of the outer needle tube is provided with a first puncture part; the inner needle tube is inserted from the second port and passes out from the first port, and is arranged inside the outer needle tube; the negative pressure device is connected with the third port and provides negative pressure.
[0006] According to some embodiments of the utility model, the first puncture part is provided with a first notch.
[0007] According to some embodiments of the utility model, one end of the inner needle tube is provided with a second puncture part, and the second puncture part is arranged outside the first puncture part.
[0008] According to some embodiments of the utility model, the second puncture part is provided with a second notch.
[0009] According to some embodiments of the utility model, a plurality of through holes are arranged on the inner needle tube close to the first port, a first sealing element is arranged between the inner needle tube on the left side of the through hole and the outer needle tube, and a second sealing element is arranged between the inner needle tube on the right side of the through hole and the second port.
[0010] According to some embodiments of the utility model, a first filter element is arranged in the inner needle tube close to the second notch.
[0011] According to some embodiments of the utility model, the other end of the inner needle tube is provided with a rotating handle.
[0012] According to some embodiments of the utility model, the third port is provided with a second filter.
[0013] According to some embodiments of the utility model, the negative pressure device is connected with the third port through a trachea, and the negative pressure device adopts a syringe.
[0014] According to the above technical solution, the puncture biopsy needle has the advantages and positive effects that: by sleeving the inner needle tube in the outer needle tube, only one needle needs to be punctured when biopsy sampling is performed, the inner needle tube and the outer needle tube can be simultaneously sent into the patient's body, and then sampling is performed in sequence, thereby reducing the patient's pain; meanwhile, the on-off control of each port is realized through the three-way valve, the needle tube continuously maintains a negative pressure state during sampling, not only reduces the risk of diffusion and infection, but also brings more samples into the needle tube, meets the quantity requirement of the sampling samples, and makes the later test result more accurate. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.
[0016] Figure 1 is a structure schematic view of a puncture biopsy needle disclosed by the embodiments of the present application;
[0017] Figure 2 is a first sampling schematic view of a puncture biopsy needle disclosed by the embodiments of the present application;
[0018] Figure 3 is a second sampling schematic view of a puncture biopsy needle disclosed by the embodiments of the present application.
[0019] BRIEF DESCRIPTION OF DRAWINGS:
[0020] 1, three-way valve; 10, first port; 11, second port; 12, third port; 2, outer needle tube; 3, inner needle tube; 4, negative pressure device; 20, first notch; 30, second notch; 31, through hole; 5, first sealing element; 6, second sealing element; 32, first filter; 33, rotating handle; 7, second filter. DETAILED DESCRIPTION
[0021] The embodiments of the present application will be described in further detail below with reference to the accompanying drawings and embodiments. The following detailed description of the embodiments and the accompanying drawings provide for exemplary illustration of the principles of the present application, but are not intended to limit the scope of the present application, which can be realized in many different forms, not limited to the specific embodiments disclosed herein, but include all technical solutions falling within the scope of the claims.
[0022] The present application provides these embodiments in order to make the present application thorough and complete, and fully express the scope of the present application to those skilled in the art. It should be noted that: unless otherwise specified, the relative arrangement of components and steps, the composition of materials, numerical expressions and values set forth in these embodiments should be interpreted as merely exemplary, and not as a limitation.
[0023] It should be noted that, in the description of the present application, unless otherwise specified, the meaning of "a plurality of" is greater than or equal to two; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0024] In addition, "first", "second", and similar words used in the present application do not indicate any order, number or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.
[0025] It should also be noted that, in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be interpreted broadly, for example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. When it is described that a specific device is located between a first device and a second device, there can be an intermediate device between the specific device and the first device or the second device, or there can be no intermediate device.
[0026] All terms used herein are intended to have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined herein. It should also be understood that terms, such as those defined in commonly diactionary are to be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and not in an idealized or overly formal sense unless specifically so defined herein.
[0027] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the specification, where appropriate.
[0028] As shown in Figure 1 , the embodiment of the puncture biopsy needle comprises a three-way valve 1, an outer needle tube 2, an inner needle tube 3, and a negative pressure device 4. The three-way valve 1 comprises a first port 10, a second port 11, and a third port 12. The first port 10 and the second port 11 are coaxially arranged. The outer needle tube 2 is connected to the first port 10 at one end, and is provided with a first puncture part at the other end. The inner needle tube 3 is inserted from the second port 11 and passes through the first port 10, and is arranged inside the outer needle tube 2. The negative pressure device 4 is connected to the third port 12 and provides negative pressure. The three-way valve 1 is a medical three-way valve 1. The valve core of the three-way valve 1 is provided with channels that are in communication with each other corresponding to the first port 10, the second port 11, and the third port 12. In the initial state, the three ports are in communication with each other. By rotating the valve core, the second port 11 can be closed, and only the first port 10 and the third port 12 are in communication. The specific structure is not described in detail here because it is a prior design.
[0029] In use, the inner needle tube 3 is sleeved in the outer needle tube 2 and is inserted into the target tissue together with the outer needle tube 2. First, the inner needle tube 3 is separated from the second port 11 after sampling operation, and the three-way valve 1 is rotated to close the second port 11 and only make the first port 10 and the third port 12 in communication. Then, the second sampling is performed by the outer needle tube 2. By sleeving the inner needle tube 3 in the outer needle tube 2, only one puncture is needed when performing biopsy sampling, that is, the inner needle tube 3 and the outer needle tube 2 are simultaneously inserted into the patient's body, and then sampling is performed in sequence, which reduces the pain of the patient. At the same time, the three-way valve 1 controls the on-off state of each port, ensuring that the needle tube is in a negative pressure state during sampling, which not only reduces the risk of diffusion and infection, but also brings more samples into the needle tube, meets the quantity requirement of the sampling samples, and makes the later test results more accurate.
[0030] As shown in Figure 2 and Figure 3As shown, in some embodiments of this utility model, a first groove 20 is provided on the first puncture part. The needle shape of the first puncture part can be, but is not limited to, an inverted conical needle, a Fuxin needle, a single-bevel conical needle, a hypodermic needle, or a Cournan needle. For example, when using a single-bevel conical needle, the first groove 20 is located on the upper wall of the tube above the bevel. By rotating the needle, the groove cuts the tissue, allowing the sample to fall into the tube for easy sampling.
[0031] like Figure 2 As shown, in some embodiments of this utility model, one end of the inner needle tube 3 is provided with a second puncture section, which extends out of the first puncture section. The needle shape of the second puncture section can be, but is not limited to, an inverted conical needle, a Fuxin needle, a single-bevel conical needle, a subcutaneous injection needle, or a Cournan needle. Specifically, when the biopsy needle is inserted into the target tissue, the second puncture section is initially located inside the outer needle tube 2 and does not extend out of the first puncture section. Upon reaching the target tissue, the first puncture section remains stationary. By advancing the inner needle tube 3, the second puncture section extends out of the first puncture section, completing the first sampling.
[0032] like Figure 2 As shown, in some embodiments of this utility model, a second groove 30 is provided on the second puncture part. For example, when a single-beveled conical needle is used for the second puncture, the second groove 30 is located on the upper wall of the tube above the bevel. By rotating the needle, the groove cuts the tissue so that the sample can fall into the tube for easy sampling.
[0033] like Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the inner needle tube 3 is provided with multiple through holes 31 near the first port 10. A first sealing member 5 is provided between the inner needle tube 3 and the outer needle tube 2 on the left side of the through hole 31, and a second sealing member 6 is provided between the inner needle tube 3 and the second port 11 on the right side of the through hole 31. In use, the negative pressure device 4 generates negative pressure, which acts on the second puncture part and the second groove 30 of the inner needle tube 3 through the through hole 31, so that the fallen sample is sucked into the tube body, preventing it from falling during the transfer process. Moreover, the continuous negative pressure can also reduce the risk of diffusion and infection. After the inner needle tube 3 has finished sampling, the inner needle tube 3 is slowly pulled out. When the end of the inner needle tube 3 reaches near the second port 11, the three-way valve 1 is rotated to close the channel between the second port 11 and the first port 10 and the third port 12, so that the inside is continuously maintained in a negative pressure state. It should be noted that the first sealing element 5 and the second sealing element 6 only serve to maintain a negative pressure state and reduce pressure leakage. They have limited impact on the rotation or insertion / removal operation of the inner needle tube 3 and do not affect the actual implementation of this embodiment.
[0034] like Figure 2As shown, in some embodiments of this invention, a first filter element 32 is provided inside the inner needle tube 3 near the second groove 30. The first filter element 32 may selectively use a filter screen, filter cotton, or other structure that has a certain degree of resistance to the movement of the sample into the depth of the tube. Under negative pressure, the first filter element 32 can prevent the sample from moving into the depth of the tube, thus avoiding affecting subsequent smear operations.
[0035] like Figure 2 As shown, in some embodiments of this utility model, a rotating handle 33 is provided at the other end of the inner needle tube 3. The rotating handle 33 is easy to operate. By rotating the handle 33, the rotating needle is driven to cut the tissue through the groove, so that the sample can fall into the tube for easy sampling.
[0036] like Figure 3 As shown, in some embodiments of this utility model, the third port 12 is provided with a second filter element 7. The second filter element 7 may selectively use a filter screen, filter cotton, or other structure that has a certain degree of obstruction to the movement of the sample towards the negative pressure device 4. Under negative pressure, the second filter element 7 can prevent the sample from moving towards the negative pressure device 4. During subsequent smear operations, the negative pressure can be released and air can be blown into the third port 12 to allow the sample to return to the end of the tube, facilitating subsequent smear operations.
[0037] like Figure 1 As shown, in some embodiments of this utility model, the negative pressure device 4 is connected to the third port 12 via an air tube, and the negative pressure device 4 is a syringe. The outward movement of the syringe piston provides negative pressure, and the inward movement of the syringe piston enables the aforementioned blowing operation.
[0038] The embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.
[0039] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.
Claims
1. A biopsy needle comprising: The utility model relates to a kind of negative pressure injection device, including: Three-way valve (1), the three-way valve (1) includes first port (10), second port (11) and third port (12), the first port (10) and the second port (11) are coaxially arranged; Outer needle tube (2), one end of the outer needle tube (2) is connected with the first port (10), and the other end of the outer needle tube (2) is provided with a first puncture part; Inner needle tube (3), the inner needle tube (3) is inserted by the second port (11), and passes out from the first port (10), and is internally arranged in the outer needle tube (2); Negative pressure device (4), the negative pressure device (4) is connected with the third port (12), and provides negative pressure; The inner needle tube (3) is provided with a second puncture part at one end, and the second puncture part is arranged outside the first puncture part;Second notch (30) is arranged on the second puncture part;A plurality of through holes (31) are arranged on the inner needle tube (3) close to the first port (10), and a first sealing element (5) is arranged between the inner needle tube (3) on the left side of the through hole (31) and the outer needle tube (2), and a second sealing element (6) is arranged between the inner needle tube (3) on the right side of the through hole (31) and the second port (11).
2. The biopsy needle of claim 1, wherein: First notch (20) is arranged on the first puncture part.
3. The biopsy needle of claim 1 wherein: First filter (32) is arranged in the inner needle tube (3) close to the second notch (30).
4. The biopsy needle of claim 1 wherein: Rotary handle (33) is arranged at the other end of the inner needle tube (3).
5. The biopsy needle of claim 1, wherein: Second filter (7) is arranged on the third port (12).
6. The biopsy needle of any of claims 1-5, wherein: The negative pressure device (4) is connected with the third port (12) through trachea, and the negative pressure device (4) uses syringe.