Ultrasonic needle biopsy needle

Abstract

An inner core is telescopically arranged in a needle tube, one end of the needle tube is concentrically fixed to a sleeve through a Luer taper, a needle head is arranged at the other end of the needle tube, the rear section of the needle tube is sleeved with a boosting tube, the front section of the needle tube is sleeved with a sheath tube, and the needle head extends out of the sheath tube. The sheath tube is arranged at the front end of the core rod through the end socket fixing seat, the front section of the core rod is sleeved with an adjusting cylinder in a sliding mode, the rear section of the core rod is sleeved with the sleeve in a sliding mode, an adjusting ring is arranged between the adjusting cylinder and the sleeve, a first adjusting screw is arranged between the adjusting ring and the core rod, and a second adjusting screw is arranged on the side portion of the adjusting cylinder. The ultrasonic needle biopsy needle is convenient to use, wider in applicability and capable of effectively improving the sampling effect.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an ultrasonic puncture biopsy needle used for fine needle aspiration biopsy. Background Art

[0002] Traditional open surgery has more and more drawbacks. For example, during open surgery for digestive system examination and treatment, due to the inaccurate judgment of arterial blood vessels, it is very easy to cause a series of complications such as massive bleeding, resulting in serious injury or even death to the patient. In this case, the development of the concepts and technologies of "precision treatment" and "minimally invasive treatment" has directly promoted the birth of minimally invasive devices including disposable ultrasonic puncture biopsy needles. Without opening the cavity, the suspected part is directly guided by the image, and the target lesion is accurately punctured by the sampling needle, and the living sample is taken for examination. Whether in terms of clinical costs, risks, or clinical effects, it has made great progress compared to traditional inspection methods. Ultrasonic puncture biopsy needles are mainly used in conjunction with ultrasonic endoscopes, and are used for endoscopic examination and biopsy sampling under the guidance of ultrasonic endoscopes.

[0003] The puncture biopsy needles of the currently known technology have the following defects:

[0004] The needle of ordinary fine needle aspiration biopsy deviates from the target center. In the assembly structure of ultrasonic puncture needle with many parts, it is impractical to have multiple specifications for one needle part and to open molds or assemble all other parts separately.

[0005] Ordinary puncture biopsy needles do not take enough samples, which affects the sampling success rate of biopsy puncture surgery, and patients are harmed again during repeated puncture sampling.

[0006] Ordinary biopsy needles are long and have many process constraints, which makes it impossible to adjust the needle length if it deviates during the manufacturing process.

[0007] Ordinary biopsy needle sheaths are usually fixed with glue, which cannot control product safety risks caused by human negligence or the expiration of the glue material.

[0008] In the conventional biopsy needle tube fixing method, the joint between the needle and the hole is glued, and the strength between them is manually ensured, which poses a safety hazard.

[0009] The handle design of ordinary biopsy needles is not suitable for medical staff to operate during ultrasonic puncture biopsy.

[0010] Common biopsy needles are available in sizes from 19G (1.1mm) to 25G (0.5mm). The thickness of the needle is selected based on the condition of the lesion. A thick needle can take a large sample and is too hard to puncture in the endoscope channel due to bending problems. A thin needle does less damage but is too soft and cannot puncture a small but hard lesion.

[0011] During surgery, the handle of an ordinary biopsy needle is moved forward and backward quickly, and the weak strength of the needle tube causes the handle section of the needle tube to bend or even fall off.

[0012] Ultrasonic imaging is a very important technical feature in puncture biopsy. Due to technical instability, poor imaging is often observed during the operation, which affects the progress of the operation.

[0013] Therefore, there is an urgent need for an ultrasonic puncture biopsy needle that can solve the above problems. Summary of the invention

[0014] The purpose of the present invention is to provide an ultrasonic puncture biopsy needle to solve the problems existing in the above-mentioned prior art.

[0015] To achieve the above object, the present invention provides the following solutions:

[0016] The present invention provides an ultrasonic puncture biopsy needle, comprising an inner core, the end of the inner core is fixedly connected to a threaded cap, and the inner core is telescopically arranged in a needle tube, one end of the needle tube is concentrically fixed with a sleeve through a Luer connector, the Luer connector is fixed to the end of the sleeve through a Luer connector fixing seat, the other end of the needle tube is provided with a needle, the rear section of the needle tube is externally sleeved with an auxiliary tube, the auxiliary tube is fixedly connected to the Luer connector, the front section of the needle tube is externally sleeved with a sheath tube, the needle head extends to the outside of the sheath tube, the sheath tube is arranged on the front end of a core rod through a head fixing seat, and is pressed and fixed by a head screw, the front section of the core rod is slidably sleeved with an adjustment cylinder, a Luer locking interface is provided between the end of the adjustment cylinder and the sheath tube, the sleeve is slidably sleeved on the rear section of the core rod, an adjustment ring is provided between the adjustment cylinder and the sleeve, a first adjustment screw is provided between the adjustment ring and the core rod, and a second adjustment screw is provided on the side of the adjustment cylinder.

[0017] Preferably, the side and end surface of the Luer connector are provided with glue ports.

[0018] Preferably, the needle tube 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 portion, the length of which is 10-13 mm, and the ultrasonic imaging portion is a spiral wire with a pitch of 0.3-1 mm.

[0020] Preferably, the front section of the needle tube is provided with an ultrasonic imaging portion, the length of which is 10-13 mm, and the ultrasonic imaging portion is a triangular array arranged oppositely.

[0021] Preferably, the needle adopts a fish head structure.

[0022] Preferably, the needle adopts a hexagonal structure.

[0023] Preferably, the outer side of the sleeve is coated with a rubber layer.

[0024] Preferably, a reinforcing tube is sleeved on the outside of the booster tube, and the reinforcing tube is fixedly connected to the head screw.

[0025] Preferably, a reducing portion is provided at the end of the sheath tube, and the length of the reducing portion is 1-3 mm.

[0026] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0027] 1. By setting the reducing part, the application of precise puncture and reducing tube technology in the field of medical devices is realized;

[0028] 2. The needle adopts fish head structure or six-sided structure design, which can take more samples and make them fuller;

[0029] 3. By setting up a split Luer connector, the influence of dimensional changes caused by processing errors, assembly errors, etc. on the overall use size can be eliminated, providing protection for surgery and patients;

[0030] 4. The needle and sheath are more firmly fixed;

[0031] 5. The outer surface of the sleeve is covered with a rubber layer, which is convenient to hold and has a shock-absorbing effect;

[0032] 6. The needle tube is made of 304 stainless steel and 17-4 stainless steel, which is both soft and hard and can adapt to the complex and changing medical environment;

[0033] 7. The Luer lock interface with split structure design greatly improves clinical adaptability;

[0034] 8. The booster tube moves precisely inside the reinforced tube, with better stability and coaxiality. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0036] Figure 1 A schematic diagram of the external structure of the ultrasonic puncture biopsy needle provided by the present invention;

[0037] Figure 2 A schematic diagram of the internal structure of the ultrasonic puncture biopsy needle provided by the present invention;

[0038] Figure 3A schematic diagram of the ultrasonic imaging structure using a spiral line in the ultrasonic puncture biopsy needle provided by the present invention;

[0039] Figure 4 A schematic diagram of a triangular ultrasonic imaging structure used in the ultrasonic puncture biopsy needle provided by the present invention;

[0040] Figure 5 A schematic diagram of the structure of a fish-head-shaped needle used in the ultrasonic puncture biopsy needle provided by the present invention;

[0041] Figure 6 This is a schematic diagram of the six-sided needle structure used in the ultrasonic puncture biopsy needle provided by the present invention. DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] In the description of the present invention, it is necessary to understand that the terms "length", "width", "inside", "outside", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The purpose of the present invention is to provide an ultrasonic puncture biopsy needle to solve the problems existing in the prior art.

[0046] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] Embodiment 1:

[0048] This embodiment provides an ultrasonic puncture biopsy needle, such as Figure 1 and 2As shown, it includes an inner core 1, the end of the inner core 1 is fixedly connected to the threaded cap 11, and the inner core 1 is telescopically arranged in the needle tube 3, one end of the needle tube 3 is concentrically fixed with the sleeve 4 through the Luer connector 12, the fixed end of the needle tube 3 and the Luer connector 12 is designed with a trumpet mouth and a U-shaped hole sol groove, three points of glue are fixed 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 through the 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 entire use size, and provides protection for surgery and patients. After the Luer connector 12 is assembled and fixed with the Luer connector fixing seat 2, fine adjustment can be achieved, the other end of the needle tube 3 is provided with a needle 3-1, the rear section of the needle tube 3 is externally sleeved with a booster tube 6, and the booster tube 6 is fixedly connected to the Luer connector 12, the front section of the needle tube 3 is externally sleeved with a sheath tube 18, and the needle 3-1 extends to the sheath The outer part of the tube 18, the sheath tube 18 is arranged at the front end of the core rod 13 through the head fixing seat 10, and is pressed and fixed by the head screw 9. Similarly, the sheath tube 18 is designed as a bell-mouth structure, and the core rod head is designed to be split, and the bell-mouth fixing sheath tube 18 is physically squeezed in a spiral manner by the head screw 9. The front section of the core rod 13 is slidably sleeved with an adjustment cylinder 16, and a Luer locking interface 17 is provided between the end of the adjustment cylinder 16 and the sheath tube 18. The function of the Luer locking interface 17 on the adjustment cylinder 16 is to control the moving coaxiality and match the endoscopic equipment, and the Luer locking interface 17 with a split structural design greatly improves the clinical adaptability. The sleeve 4 is slidably sleeved on the outer part of the rear section of the core rod 13, an adjustment ring 8 is provided between the adjustment cylinder 16 and the sleeve 4, a first adjustment screw 14 is provided between the adjustment ring 8 and the core rod 13, and a second adjustment screw 15 is provided on the side of the adjustment cylinder 16.

[0049] When in use, first unscrew the inner core 1 by 1-2 mm, fix the end of the adjusting tube 16 at the opening of the ultrasonic endoscope clamp, and then control the adjusting tube 16 to control the distance the sheath 18 moves forward and backward by rotating the second adjusting screw 15. When the sheath 18 is extended under the endoscope, it can be locked. Finally, control the extension length of the needle tube 3 by rotating the first adjusting screw 14. After determining the required puncture depth, lock it, and then hold the sleeve 4 by hand and move it in a fast-forward and slow-retracting manner to achieve puncture sampling.

[0050] As an implementation mode, the side and end surface of the Luer connector 12 are both provided with glue ports 12 - 1 to achieve a connection effect.

[0051] As an implementation mode, the needle tube 3 is made of 304 stainless steel or 17-4 stainless steel. At present, the domestic needle tube materials are mainly ordinary 304 stainless steel, nickel titanium, and cobalt chromium alloy materials, but nickel titanium and cobalt chromium alloy materials are expensive. This application uses 304 stainless steel and 17-4 stainless steel. Both materials can greatly improve the softness of the thick needle, and the 17-4 stainless steel material also improves the strength of the thin needle.

[0052] As an implementation mode, the outer side of the sleeve 4 is coated with a rubber layer 5, which can be made of medical rubber material, which is not only comfortable to hold but also has a shock-absorbing effect.

[0053] As an implementation mode, the outer sleeve of the booster tube 6 is provided with a reinforcing tube 7, and the reinforcing tube 7 is fixedly connected to the head screw 9. The booster tube 6 moves precisely in the reinforcing tube 7, and has better stability and coaxiality.

[0054] As an implementation mode, a reducing portion 18 - 1 is provided at the end of the sheath tube 18 , and the length of the reducing portion 18 - 1 is 1-3 mm. By providing the reducing portion 18 - 1 , the application of precise puncture and reducing tube technology in the field of medical devices is achieved.

[0055] Embodiment 2:

[0056] As an improvement of Example 1, this embodiment provides an ultrasonic imaging structure, such as Figure 3 As shown, the front section of the needle tube 3 is provided with an ultrasonic imaging part 3-2, which has a length of 10-13 mm. The ultrasonic imaging part 3-2 is a spiral line with a pitch of 0.3-1 mm, so that ultrasonic imaging is no longer an obstacle to the progress of puncture biopsy.

[0057] Embodiment 3:

[0058] As a variation of Example 2, Figure 4 As shown, this embodiment provides another ultrasonic development structure. The front section of the needle tube 3 is provided with an ultrasonic development portion 3-2, which has a length of 10-13 mm. The ultrasonic development portion 3-2 is a relatively arranged triangular surface array. By adopting the above structure, the effect of ultrasonic development can also be achieved.

[0059] Embodiment 4:

[0060] As an improvement of embodiment 1, this embodiment sets up a structure for increasing the sampling amount, such as Figure 5 As shown, the needle 3-1 adopts a fish-head structure, specifically a structure with a high needle tip and three low needle tips. Compared with the traditional bevel needle tip, this can effectively increase the sampling volume and improve the sampling effect.

[0061] Embodiment 5:

[0062] As a variation of Example 4, Figure 6 As shown, this embodiment provides another structure for increasing the sampling volume. The needle 3-1 adopts a six-sided structure, specifically three large faces and three small faces, and the large faces and small faces are arranged alternately, which can also effectively increase the sampling volume and improve the sampling effect.

[0063] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0065] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

[0066] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0067] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An ultrasonic puncture biopsy needle, characterized in that: The needle tube (3) comprises an inner core (1), the end of which is fixedly connected to a threaded cap (11), and the inner core (1) is telescopically arranged in a needle tube (3), one end of the needle tube (3) is fixed concentrically with a sleeve (4) through a Luer connector (12), the Luer connector (12) is fixed to the end of the sleeve (4) through a Luer connector fixing seat (2), the other end of the needle tube (3) is provided with a needle head (3-1), the rear section of the needle tube (3) is externally sleeved with an auxiliary tube (6), the auxiliary tube (6) is fixedly connected to the Luer connector (12), the front section of the needle tube (3) is externally sleeved with a sheath tube (18), and the needle head (3-1) extends to the sheath tube (18). The sheath tube (18) is arranged on the front end of the core rod (13) through a head fixing seat (10) and is fixed by a head screw (9). An adjustment cylinder (16) is slidably mounted on the outside of the front section of the core rod (13). A Luer locking interface (17) is provided between the end of the adjustment cylinder (16) and the sheath tube (18). The sleeve (4) is slidably mounted on the outside of the rear section of the core rod (13). An adjustment ring (8) is provided between the adjustment cylinder (16) and the sleeve (4). A first adjustment screw (14) is provided between the adjustment ring (8) and the core rod (13). A second adjustment screw (15) is provided on the side of the adjustment cylinder (16).

2. The ultrasonic puncture biopsy needle according to claim 1, characterized in that: The side and end surface of the Luer connector (12) are both provided with glue ports (12-1).

3. The ultrasonic puncture biopsy needle according to claim 1, characterized in that: The needle tube (3) is made of 304 stainless steel or 17-4 stainless steel.

4. The ultrasonic puncture biopsy needle according to claim 1, characterized in that: The front section of the needle tube (3) is provided with an ultrasonic imaging part (3-2) with a length of 10-13 mm. The ultrasonic imaging part (3-2) is a spiral line with a pitch of 0.3-1 mm.

5. The ultrasonic puncture biopsy needle according to claim 1, characterized in that: The front section of the needle tube (3) is provided with an ultrasonic imaging portion (3-2) having a length of 10-13 mm. The ultrasonic imaging portion (3-2) is a triangular surface array arranged opposite to each other.

6. The ultrasonic puncture biopsy needle according to claim 1, characterized in that: The needle (3-1) adopts a fish head-shaped structure.

7. The ultrasonic puncture biopsy needle according to claim 1, characterized in that: The needle (3-1) adopts a six-sided structure.

8. The ultrasonic puncture biopsy needle according to claim 1, characterized in that: The outer side of the sleeve (4) is coated with a rubber layer (5).

9. The ultrasonic puncture biopsy needle according to claim 1, characterized in that: The outer portion of the booster tube (6) is sleeved with a reinforcing tube (7), and the reinforcing tube (7) is fixedly connected to the sealing screw (9).

10. The ultrasonic puncture biopsy needle according to claim 1, characterized in that: The end of the sheath tube (18) is provided with a diameter reducing portion (18-1), and the length of the diameter reducing portion (18-1) is 1-3 mm.

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