Ultrasonic needle biopsy needle
The ultrasonic biopsy needle, designed with a split structure and high-quality materials, solves problems such as needle deviation and insufficient sampling, achieving precise puncture and stable sampling, thus improving the safety and efficiency of the procedure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-04-03
AI Technical Summary
Existing ultrasonic biopsy needles have problems such as needle deviation, insufficient sample volume, length deviation, unstable fixation, difficulty in material selection, unreasonable handle design, and unstable imaging, which affect the surgical effect and safety.
A split-structure ultrasonic biopsy needle was designed, using 304 stainless steel and 17-4 stainless steel. It combines a split Luer connector, a variable diameter section, a fish-head or six-sided needle, an ultrasonic imaging section, and an adhesive layer to achieve precise puncture, stable fixation, and enhanced sampling volume.
It achieves precise puncture, stable fixation, increased sampling volume, reduced errors, improved adaptability and safety, and enhances the reliability and efficiency of the surgery.
Smart Images
Figure CN224070543U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to an ultrasonic biopsy needle for use in fine needle biopsy. Background Technology
[0002] Traditional open surgery has increasingly drawn drawbacks. For example, during abdominal surgery for the digestive system, the inaccurate assessment of arteries can easily lead to massive bleeding and other complications, resulting in serious injury or even death for the patient. In this context, the development of "precision medicine" and "minimally invasive medicine" concepts and technologies has directly driven the emergence of minimally invasive instruments, including disposable ultrasound biopsy needles. These instruments eliminate the need for incisions, allowing for precise puncture of suspected lesions using imaging guidance, and biopsy sampling. This represents a significant improvement over traditional methods in terms of clinical cost, risk, and effectiveness. Ultrasound biopsy needles are primarily used in conjunction with ultrasound endoscopes for endoscopic examination and biopsy sampling under ultrasound guidance.
[0003] Currently known techniques for biopsy needles have the following drawbacks:
[0004] In conventional fine-needle biopsy, the needle may deviate from the target center. In assembly structures with many ultrasonic puncture needle components, it is impractical to create multiple specifications for a single needle component or to separately mold or assemble all other components.
[0005] The insufficient sample volume obtained by conventional puncture biopsy needles hinders the success rate of biopsy puncture procedures, and patients suffer secondary harm during repeated punctures.
[0006] Conventional biopsy needles are constrained by their long length and numerous manufacturing processes, making it impossible to adjust the needle length once a deviation occurs during manufacturing.
[0007] Ordinary biopsy needle sheaths are usually fixed with glue, which makes it impossible to control product safety issues caused by human negligence or the glue material nearing its expiration date.
[0008] The conventional biopsy needle tube is fixed by gluing the joint between the needle and the orifice, relying on human intervention to ensure strength, which poses a safety hazard.
[0009] The design of the handle of a standard biopsy needle is not suitable for medical personnel to operate during ultrasound-guided biopsy.
[0010] Common biopsy needles are typically sized from 19G (1.1mm) to 25G (0.5mm). The main technical bottleneck is choosing the appropriate needle size based on the condition of the lesion. Thick needles are too hard and have a large sample volume, making them difficult to puncture in the endoscopic forceps channel due to bending issues. Thin needles are less invasive but too soft and cannot puncture small but hard lesions.
[0011] When using a standard biopsy needle, the handle is moved forward quickly and then backward slowly during the procedure. If the needle tube is weak, the handle section may bend or even fall off.
[0012] Ultrasound imaging is a very important technical feature in puncture biopsy. Due to technical instability, poor imaging is often observed during the procedure, which affects the progress of the operation.
[0013] Therefore, there is an urgent need for an ultrasonic biopsy needle that can solve the above problems. Utility Model Content
[0014] The purpose of this invention is to provide an ultrasonic biopsy needle to solve the problems existing in the prior art.
[0015] To achieve the above objectives, this utility model provides the following solution:
[0016] This utility model provides an ultrasonic puncture biopsy needle, including an inner core, the end of which is fixedly connected to a threaded cap and is telescopically disposed within a needle tube. One end of the needle tube is concentrically fixed to a sleeve via a Luer connector, and the Luer connector is fixed to the end of the sleeve via a Luer connector fixing seat. The other end of the needle tube is provided with a needle tip. A push tube is sleeved on the rear section of the needle tube and is fixedly connected to the Luer connector. A sheath is sleeved on the front section of the needle tube, and the needle tip extends to the outside of the sheath. The sheath is disposed at the front end of the core rod via a cap fixing seat and is pressed and fixed by a cap screw. An adjusting cylinder is slidably sleeved on the front section of the core rod. A Luer locking interface is provided between the end of the adjusting cylinder and the sheath. The sleeve is slidably sleeved on the rear section of the core rod. An adjusting ring is provided between the adjusting cylinder and the sleeve. A first adjusting screw is provided between the adjusting ring and the core rod. A second adjusting screw is provided on the side of the adjusting cylinder.
[0017] Preferably, the Luer connector has a rubber inlet on its side and end face.
[0018] Preferably, the syringe is made of 304 stainless steel or 17-4 stainless steel.
[0019] Preferably, the front section of the needle tube is provided with an ultrasonic imaging section, the length of which is 10-13 mm, and the ultrasonic imaging section is a spiral with a pitch of 0.3-1 mm.
[0020] Preferably, the front section of the needle is provided with an ultrasonic imaging section, the length of which is 10-13mm, and the ultrasonic imaging section is a triangular array arranged opposite each other.
[0021] Preferably, the needle has a fish head-shaped structure.
[0022] Preferably, the needle has a hexagonal structure.
[0023] Preferably, the outer side of the sleeve is covered with an adhesive layer.
[0024] Preferably, a reinforcing tube is fitted around the outside of the booster tube, and the reinforcing tube is fixedly connected to the end cap screw.
[0025] Preferably, the end of the sheath is provided with a variable diameter section, the length of which is 1-3 mm.
[0026] The present invention achieves the following beneficial technical effects compared to the prior art:
[0027] 1. By setting up a variable diameter section, the application of precise puncture and variable diameter tube technology in the field of medical devices has been realized;
[0028] 2. The needle adopts a fish-head-shaped or hexagonal structure design, allowing for a larger and more complete sample collection;
[0029] 3. By setting up a split-type Luer joint, the impact of dimensional changes caused by factors such as machining errors and assembly errors on the overall size of the device can be eliminated, providing protection for surgery and patients;
[0030] 4. The needle tube and sheath are more securely fixed;
[0031] 5. The sleeve is covered with a rubber coating, which makes it easy to hold and has a shock-absorbing effect;
[0032] 6. The syringe is made of both 304 stainless steel and 17-4 stainless steel, combining softness and hardness to adapt to complex and ever-changing medical environments.
[0033] 7. The split-structure design of the Luer locking interface greatly improves clinical adaptability;
[0034] 8. The booster tube moves precisely within the reinforced tube, resulting in better stability and coaxiality. Attached Figure Description
[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model 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.
[0036] Figure 1 This is a schematic diagram of the external structure of the ultrasonic biopsy needle provided by this utility model;
[0037] Figure 2 This is a schematic diagram of the internal structure of the ultrasonic biopsy needle provided by this utility model;
[0038] Figure 3A schematic diagram of the ultrasonic imaging structure using a spiral in the ultrasonic biopsy needle provided by this utility model;
[0039] Figure 4 A schematic diagram of the triangular ultrasonic imaging structure used in the ultrasonic biopsy needle provided by this utility model;
[0040] Figure 5 A schematic diagram of the fish-head shaped needle structure used in the ultrasonic biopsy needle provided by this utility model;
[0041] Figure 6 This is a schematic diagram of the hexagonal needle structure used in the ultrasonic biopsy needle provided by this utility model. Detailed Implementation
[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0043] In the description of this utility model, it should be understood that the terms "length", "width", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and 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, and therefore should not be construed as a limitation of this utility model.
[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0045] The purpose of this invention is to provide an ultrasonic biopsy needle to solve the problems existing in the prior art.
[0046] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0047] Example 1:
[0048] This embodiment provides an ultrasonic biopsy needle, such as Figure 1 and2 As shown, the device includes an inner core 1, the end of which is fixedly connected to a threaded cap 11. The inner core 1 is telescopically housed within a needle tube 3. One end of the needle tube 3 is concentrically fixed to a sleeve 4 via a Luer connector 12. The fixed ends of the needle tube 3 and the Luer connector 12 are designed with a flared opening and a U-shaped sol-gel groove. Three points are glued together to form a triangular array to firmly fix the needle tube 3. The Luer connector 12 is fixed to the end of the sleeve 4 via a Luer connector fixing seat 2. The split Luer connector 12 can eliminate the influence of dimensional changes caused by processing errors, assembly errors, etc., on the overall size of the device, providing protection for surgery and patients. After assembly, the Luer connector 12 can be finely adjusted after being fixed to the Luer connector fixing seat 2. The other end of the needle tube 3 is provided with a needle tip 3-1. A push tube 6 is sleeved on the rear section of the needle tube 3 and fixedly connected to the Luer connector 12. A sheath 18 is sleeved on the front section of the needle tube 3, and the needle tip 3-1 extends to the sheath. The sheath 18 is located outside the tube 18. It is mounted on the front end of the core rod 13 via a head fixing seat 10 and is secured by a head screw 9. Similarly, the sheath 18 is designed as a flared structure, and the core rod head is designed as a split type. The sheath 18 is secured by the head screw 9 in a spiral manner to physically compress the flared opening. An adjusting cylinder 16 is slidably fitted on the front section of the core rod 13. A Luer locking interface 17 is provided between the end of the adjusting cylinder 16 and the sheath 18. The function of the Luer locking interface 17 on the adjusting cylinder 16 is to control the coaxiality of movement and match the endoscope equipment. The split structure design of the Luer locking interface 17 greatly improves clinical adaptability. The sleeve 4 is slidably fitted on the rear section of the core rod 13. An adjusting ring 8 is provided between the adjusting cylinder 16 and the sleeve 4. A first adjusting screw 14 is provided between the adjusting ring 8 and the core rod 13. A second adjusting screw 15 is provided on the side of the adjusting cylinder 16.
[0049] In use, first unscrew the inner core 1 by 1-2mm, fix the end of the adjusting cylinder 16 to the ultrasonic endoscope's forceps opening, and then control the distance the sheath 18 moves back and forth by rotating the second adjusting screw 15. Once the sheath 18 is observed to extend under the endoscope, lock it. Finally, control the length of the needle 3 extension by rotating the first adjusting screw 14. After determining the required puncture depth, lock it. Then, hold the sleeve 4 and move it using a fast forward and slow backward motion to achieve puncture and sampling.
[0050] In one embodiment, the Luer connector 12 is provided with a glue port 12-1 on both its side and end face to achieve a connection effect.
[0051] As one implementation method, the needle tube 3 is made of 304 stainless steel or 17-4 stainless steel. Currently, the needle tube materials in China are mostly ordinary 304 stainless steel, nickel-titanium, and cobalt-chromium alloy materials. However, nickel-titanium and cobalt-chromium alloy materials are expensive. This application uses two materials, 304 stainless steel and 17-4 stainless steel, which can not only greatly improve the flexibility of the coarse needle, but also improve the strength of the fine needle with 17-4 stainless steel.
[0052] In one embodiment, the outer side of the sleeve 4 is covered with a rubber layer 5, which can be made of medical-grade rubber, providing not only a comfortable grip but also shock absorption.
[0053] In one embodiment, a reinforcing tube 7 is sleeved on the outside of the booster tube 6. The reinforcing tube 7 is fixedly connected to the end cap screw 9. The booster tube 6 moves precisely inside the reinforcing tube 7, resulting in better stability and coaxiality.
[0054] In one embodiment, the end of the sheath 18 is provided with a variable diameter section 18-1, the length of which is 1-3 mm. By setting the variable diameter section 18-1, the application of precise puncture and variable diameter tube technology in the field of medical devices is realized.
[0055] Example 2:
[0056] As an improvement to Example 1, this example includes an ultrasonic imaging structure, such as... Figure 3 As shown, the front section of the needle tube 3 is provided with an ultrasound imaging section 3-2, which is 10-13 mm in length. The ultrasound imaging section 3-2 is a spiral with a pitch of 0.3-1 mm, so that ultrasound imaging is no longer an obstacle to the advancement of puncture biopsy.
[0057] Example 3:
[0058] As a variation of Example 2, such as Figure 4 As shown, this embodiment provides another ultrasonic imaging structure. The front section of the needle tube 3 is provided with an ultrasonic imaging part 3-2, which has a length of 10-13mm. The ultrasonic imaging part 3-2 is a triangular array arranged opposite each other. By adopting the above structure, the ultrasonic imaging effect can also be achieved.
[0059] Example 4:
[0060] As an improvement to Example 1, this example incorporates a structure to increase the sampling volume, such as... Figure 5 As shown, the needle 3-1 adopts a fish head-shaped structure, specifically a structure with a high needle tip and three low needle tips. Compared with the traditional beveled needle tip, this can effectively increase the sampling volume and improve the sampling effect.
[0061] Example 5:
[0062] As a variation of Example 4, such as Figure 6 As shown, this embodiment provides another structure to increase the sampling volume. The needle 3-1 adopts a hexagonal structure, specifically three large faces and three small faces, with the large and small faces arranged alternately. This can also effectively increase the sampling volume and improve the sampling effect.
[0063] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0064] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
[0065] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
[0066] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0067] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An ultrasound puncture biopsy needle characterized by: The utility model relates to a medical injection needle, including inner core (1), the end of inner core (1) is fixedly connected with screw cap (11), and inner core (1) is telescopically arranged in needle tube (3), one end of needle tube (3) is fixed concentrically with sleeve (4) through luer joint (12), luer joint (12) is fixed on the end of sleeve (4) through luer joint fixing seat (2), the other end of needle tube (3) is equipped with needle (3-1), the outside of the rear section of needle tube (3) is equipped with boost tube (6), boost tube (6) is fixedly connected with luer joint (12), the outside of the front section of needle tube (3) is equipped with sheath tube (18), needle (3-1) extends to the outside of sheath tube (18), sheath tube (18) is arranged on the front end of core rod (13) through end cap fixing seat (10) and is fixedly pressed through end cap screw (9), the outside of the front section of core rod (13) is slidably equipped with adjusting cylinder (16), and luer lock interface (17) is arranged between the end of adjusting cylinder (16) and sheath tube (18), sleeve (4) is slidably equipped on the outside of the rear section of core rod (13), adjusting ring (8) is arranged between adjusting cylinder (16) and sleeve (4), first adjusting screw (14) is arranged between adjusting ring (8) and core rod (13), and the side of adjusting cylinder (16) is equipped with second adjusting screw (15).
2. The ultrasound puncture biopsy needle according to claim 1, characterized in that: The side and end face of the luer joint (12) are provided with a rubber port (12-1).
3. The ultrasound puncture biopsy needle according to claim 1, characterized by: The needle tube (3) is made of 304 stainless steel or 17-4 stainless steel.
4. The ultrasound puncture biopsy needle according to claim 1, characterized by: The front section of the needle tube (3) is provided with an ultrasonic imaging part (3-2) with a length of 10-13 mm, and the ultrasonic imaging part (3-2) is a spiral line with a pitch of 0.3-1 mm.
5. The ultrasound puncture biopsy needle according to claim 1, characterized by: The front section of the needle tube (3) is provided with an ultrasonic imaging part (3-2) with a length of 10-13 mm, and the ultrasonic imaging part (3-2) is a triangular face array arranged oppositely.
6. The ultrasound puncture biopsy needle according to claim 1, characterized by: The needle (3-1) adopts a fish head type structure.
7. The ultrasound puncture biopsy needle according to claim 1, characterized by: The needle (3-1) adopts a six-face type structure.
8. The ultrasound puncture biopsy needle according to claim 1, characterized by: The sleeve (4) is coated with a rubber layer (5) on the outside.
9. The ultrasound puncture biopsy needle according to claim 1, characterized by: The boost tube (6) is provided with a reinforcing tube (7) on the outside, and the reinforcing tube (7) is fixedly connected with the end cap screw (9).
10. The ultrasound puncture biopsy needle according to claim 1, characterized by: The sheath tube (18) is provided with a variable diameter part (18-1) at the end, and the variable diameter part (18-1) has a length of 1-3 mm.