Puncture biopsy needle

Abstract

The utility model discloses an aspiration biopsy needle which comprises a handle, a biopsy needle head and an ultrasonic probe, and an assembly hole channel is formed in the handle. The biopsy needle head is connected with the handle and is inserted into the assembling hole channel; a central hole channel is formed in the biopsy needle in the axial direction; the central hole channel is communicated with the assembly hole channel to form a sampling channel; the ultrasonic probe is detachably arranged in the sampling channel and is used for extending to the front of the biopsy needle so as to observe the position to be sampled. By inserting the ultrasonic probe into the biopsy needle head for observation, the positioning precision of a position to be sampled can be improved, so that after the ultrasonic probe is taken out, accurate sampling can be performed, the sampling precision of the needle biopsy needle is improved, the sampling frequency is reduced, the assembly damage is reduced, and the safety of an operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of minimally invasive medical devices, in particular to a puncture biopsy needle. Background Art

[0002] With the continuous advancement of imaging technology, the accuracy of tumor diagnosis in modern clinical medicine has been greatly improved, and pathological diagnosis through puncture biopsy is still an indispensable way in the diagnosis and treatment of tumors. Pathological analysis through puncture biopsy sampling can effectively improve the accuracy of imaging and ultrasound diagnosis. The existing puncture biopsy process generally involves first inserting an endoscope into the living body cavity, finding the location to be tested, and then using ultrasound analysis to determine whether there is a lesion and whether sampling is needed; then the puncture biopsy needle is extended from the channel on the endoscope to take samples.

[0003] Due to the limitations of the production process, existing endoscopes are large in size and cannot enter narrow areas. In some working environments where narrow areas need to be inspected, the current method is generally to first insert an ultrasonic probe into the clamp channel of the endoscope, extend the ultrasonic probe into the narrow area for ultrasonic exploration, and if puncture sampling is found to be necessary, pull out the ultrasonic probe, and then insert a puncture biopsy needle along the moving path of the ultrasonic probe for sampling.

[0004] However, during the puncture sampling process, since the sampling position cannot be directly observed, in order to improve the sampling accuracy, it is necessary to repeat the sampling at the position to be tested. Increasing the number of punctures not only increases the difficulty of the operation and prolongs the operation time, but also causes great damage to the living tissue and reduces the safety of the operation.

[0005] Therefore, the prior art still needs to be improved and developed. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide a puncture biopsy needle, aiming to solve the problem that the puncture biopsy needle cannot accurately locate the position to be detected in some narrow scenarios, and multiple sampling is required, which affects the sampling accuracy, increases the difficulty and time of the operation, and increases the risk of the operation.

[0007] The technical solution of the utility model is as follows:

[0008] A puncture biopsy needle, comprising:

[0009] A handle, wherein the handle is provided with an assembly hole;

[0010] A biopsy needle is connected to the handle and inserted in the assembly channel; a central channel is formed in the biopsy needle along the axial direction; the central channel is connected to the assembly channel to form a sampling channel;

[0011] The ultrasonic probe is detachably arranged in the sampling channel and is used to extend to the front of the biopsy needle to observe the position to be sampled.

[0012] The puncture biopsy needle, wherein the handle comprises:

[0013] A main body, wherein the main body is hollow and has a first channel arranged in an axial direction;

[0014] An adjustment structure connected to the main body and slidably disposed in the first hole; a second hole is formed in the hollow of the adjustment structure, and the second hole and the first hole together constitute the assembly hole;

[0015] Wherein, the biopsy needle is inserted from the head end of the first channel and connected to the head end of the adjustment structure; the central channel is connected to the second channel to form the sampling channel.

[0016] The puncture biopsy needle, wherein the handle comprises a docking joint, and the docking joint is arranged at the tail end of the adjustment structure and is used for externally connecting to a syringe.

[0017] The puncture biopsy needle, wherein the handle includes a protective sleeve, and the protective sleeve is arranged at the head end of the main body and is used to be sleeved on the biopsy needle.

[0018] The puncture biopsy needle, wherein the biopsy needle comprises:

[0019] A needle core is inserted into the first hole and connected to the adjustment structure; the needle core is hollow to form the central hole;

[0020] A retractable outer sleeve is connected to the protective sleeve and is sleeved on the outer side of the needle core.

[0021] The puncture biopsy needle, wherein the retractable outer sleeve comprises an inner spring tube and an outer plastic tube.

[0022] The puncture biopsy needle, wherein the ultrasonic probe includes an outer sheath assembled in the needle core, and a transmission line, a first transducer and a second transducer arranged in the outer sheath, and the frequency of the first transducer is lower than the frequency of the second transducer.

[0023] The puncture biopsy needle, wherein a slot is formed on the adjustment structure along the radial direction, and the slot is communicated with the second channel;

[0024] The puncture biopsy needle also includes a locking structure, which is nested in the slot and can extend into the second channel to lock the ultrasonic probe.

[0025] The puncture biopsy needle, wherein the locking structure comprises:

[0026] A locking member, inserted into the slot;

[0027] The locking knob is rotatably mounted on the adjusting structure and covers the port of the slot; the locking knob is connected to the locking member and is used to push the locking member to move toward the second channel to abut against the ultrasonic probe.

[0028] The puncture biopsy needle, wherein a locking block is provided on the inner wall of the main body, and the locking block is located at the end of the first channel facing the adjustment structure;

[0029] A plurality of bayonet holes are axially arranged on the outer surface of the adjustment structure, and the bayonet holes are adapted to the locking block.

[0030] Compared with the prior art, the embodiment of the utility model has the following advantages:

[0031] The puncture biopsy needle disclosed in the utility model is connected to a biopsy needle at the front end of the handle, so that the assembly channel is connected to the central channel to form a sampling channel. When performing a biopsy on a narrow cavity, the ultrasonic probe is first inserted into the sampling channel, and the image in front of the biopsy needle is observed through the ultrasonic probe. As the biopsy needle is continuously advanced, when a position where a tumor may be present appears in the image, the biopsy needle is guided to approach the position to be sampled according to the image; after aligning with the position to be sampled, the ultrasonic probe is pulled out, and then sampling is performed.

[0032] By forming a sampling channel in the center of the handle and the biopsy needle, the ultrasonic probe can be inserted for pre-sampling inspection to facilitate the alignment of the biopsy needle with the sampling position, and the ultrasonic probe can be conveniently pulled out for sampling. This simplifies the biopsy sampling process, realizes the operation of visual puncture biopsy, improves the sampling accuracy of the puncture biopsy needle, and is conducive to reducing the number of sampling times, shortening the operation time, reducing tissue damage, and improving the safety of the operation.

[0033] In addition, the ultrasonic probe disclosed in the utility model can be reused after being sterilized after being pulled out from the sampling channel, thereby reducing the replacement frequency of medical equipment, which is conducive to reducing surgical costs and reducing material damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a schematic diagram of the structure of the puncture biopsy needle in the utility model;

[0036] Figure 2 It is an axial cross-sectional view of the puncture biopsy needle in the utility model;

[0037] Figure 3 This is a schematic diagram of the structure of the handle in the utility model;

[0038] Figure 4 It is an axial cross-sectional view of the handle in the utility model.

[0039] Among them, 10, handle; 11, assembly channel; 12, main body; 121, first channel; 122, locking block; 123, first gripper; 1231, first buckle position; 13, adjustment structure; 131, second channel; 132, slot; 133, bayonet; 134, second gripper; 1341, second buckle position; 14, docking head; 15, protective cover; 20, biopsy needle; 21, central channel; 22, needle core; 23, retractable outer sleeve; 30, ultrasonic probe; 40, sampling channel; 50, locking structure; 51, locking piece; 52, locking knob. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the solution of the utility model, the following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] See also Figure 1 and Figure 2 In one embodiment of the utility model application, a puncture biopsy needle is disclosed, which includes a handle 10, a biopsy needle 20 and an ultrasonic probe 30. The handle 10 is provided with an assembly channel 11; the biopsy needle 20 is connected to the handle 10 and inserted in the assembly channel 11; a central channel 21 is formed in the biopsy needle 20 along the axial direction; the central channel 21 is connected to the assembly channel 11 to form a sampling channel 40; the ultrasonic probe 30 is detachably arranged in the sampling channel 40, and is used to extend to the front of the biopsy needle 20 to observe the position to be sampled, or withdraw to the outside of the sampling channel 40.

[0042] Currently, early screening for tumors is mainly carried out by combining two methods: an ultrasonic probe 30 and a puncture biopsy. First, the ultrasonic probe 30 is rotated at high speed in the living body cavity to obtain a tomographic image of the intracavitary tissue, thereby detecting possible early cancers and tiny tumors. Furthermore, the detected lesion location is punctured and part of the tissue is removed for biopsy, which can achieve a more accurate analysis effect and improve the accuracy of the judgment of tumor tissue.

[0043] The existing puncture biopsy needle includes an inner needle core 22 and an external sleeve. The tip of the inner needle core 22 is generally designed with a sampling groove. The inner needle core 22 is inserted into the tissue, and then the tissue in the sampling groove is cut by manually or automatically firing the external sleeve forward to achieve sampling. Such a structural design can ensure that a sufficient amount of diseased tissue samples are obtained.

[0044] However, when there are foreign objects in the living cavity or the space is narrow, the endoscope cannot be used for observation during the sampling process. Therefore, in practice, it is necessary to first use an ultrasonic probe 30 to check, and then remove the ultrasonic probe 30 from the endoscope forceps channel. Then, the puncture biopsy needle is inserted through the endoscope forceps channel to take samples. Since the sampling operation cannot be visualized, the accuracy of each sampling cannot be determined. In order to improve the effectiveness of sampling, it is often necessary to repeat it many times to complete the sampling work.

[0045] This embodiment discloses that a biopsy needle 20 is connected to the front end of the handle 10, so that the assembly channel 11 is connected to the central channel 21 to form a sampling channel 40. When performing a biopsy on a narrow cavity, the ultrasonic probe 30 is first inserted into the sampling channel 40, and an ultrasonic examination is performed through the ultrasonic probe 30 to observe the image in front of the biopsy needle 20 in real time. As the biopsy needle 20 is continuously advanced, when the lesion position is found in the image, the biopsy needle 20 is guided to approach the sampling position according to the ultrasonic image; after aligning with the sampling position, the biopsy needle is controlled to take samples.

[0046] It can be seen that by forming a sampling channel 40 in the center of the handle 10 and the biopsy needle 20, the ultrasonic probe 30 can be inserted for observation before sampling, so as to align the biopsy needle 20 with the sampling position to be sampled and improve the accuracy of sampling, and it is convenient to take samples after the ultrasonic probe 30 is pulled out, which simplifies the biopsy sampling process, realizes the operation of visual puncture biopsy, improves the sampling accuracy of the puncture biopsy needle, and is conducive to reducing the number of sampling times, shortening the operation time, reducing tissue damage, and improving the safety of the operation.

[0047] The ultrasonic probe 30 disclosed in this embodiment can be reused after being pulled out from the sampling channel 40 and disinfected, thereby reducing the replacement frequency of medical equipment, which is beneficial to reducing surgical costs and reducing material damage.

[0048] Specifically, in this embodiment, after the ultrasonic probe 30 is pulled out, a syringe may be connected to the rear end of the handle 10 to draw out the air in the sampling channel 40 to form a negative pressure for sampling.

[0049] like Figure 2 , Figure 3 and Figure 4 As shown, as an implementation of this embodiment, the handle 10 is disclosed to include a main body 12 and an adjustment structure 13, the main body 12 is hollow and has a first channel 121 arranged along the axial direction; the adjustment structure 13 is connected to the main body 12 and can be slidably arranged in the first channel 121; the adjustment structure 13 is hollow and has a second channel 131 formed therein, and the second channel 131 and the first channel 121 together constitute the assembly channel 11; the biopsy needle 20 is inserted from the head end of the first channel 121 and is connected to the head end of the adjustment structure 13; the central channel 21 is connected to the second channel 131 to form the sampling channel 40.

[0050] The adjustment structure 13 disclosed in this embodiment is used to adjust the length of the biopsy needle 20 extending out of the assembly channel 11. During the biopsy process, the handle 10 is moved to send the biopsy needle 20 into the living body cavity, and the ultrasonic probe 30 is extended into the sampling channel 40. According to the image information in the cavity collected by the ultrasonic probe 30, the adjustment structure 13 can control the biopsy needle 20 to move forward or backward to the position to be sampled, and then the ultrasonic probe 30 is pulled out to align with the position to be sampled, so as to facilitate assembly and sampling operation. By arranging the adjustment structure 13, the flexibility of the biopsy needle 20 is increased, so that it can be moved close to the position to be sampled under the guidance of the image data of the ultrasonic probe 30, which is conducive to improving the effectiveness of removing samples.

[0051] like Figure 3 As shown, as another implementation of this embodiment, it is disclosed that the handle 10 includes a docking joint 14, which is arranged at the tail end of the main body 12 and is used to connect an external syringe. The docking joint 14 is arranged at the tail end of the main body 12 to facilitate the connection of the syringe. Specifically, the docking joint 14 can adopt a Luer male connector, and a Luer female connector can be correspondingly arranged on the syringe to achieve connection. The Luer connector is a convenient connection device used in the medical industry. It is a standardized micro-seepage-free connector, so it is beneficial to maintain the closedness and connection stability of the syringe and the sampling channel 40, so as to reduce contamination when drawing samples and facilitate operation.

[0052] Specifically, as another implementation of this embodiment, the handle 10 is disclosed to include a protective cover 15, which is provided at the head end of the main body 12 and is used to be sleeved on the biopsy needle 20. In this embodiment, the protective cover 15 can be made of soft medical materials such as latex and rubber, and is sleeved at the position where the main body 12 and the biopsy needle 20 are connected, so as to cover the assembly gap, protect the biopsy probe, and further improve the sealing performance of the puncture biopsy needle.

[0053] Specifically, in order to facilitate movement in the cavity, the biopsy needle 20 is often in an overall long strip shape, with the head end used for sampling and the rear end connected to the main body 12. In this embodiment, the protective cover 15 can be set as a tapered structure that gradually becomes smaller in the direction away from the main body 12, and is used on the rear end of the biopsy needle 20, so that after the rear end of the biopsy needle 20 is connected to the main body 12 as a whole, the connection position is supported and the hardness gradually changes. When the biopsy needle 20 is bent, it will not bend suddenly at the connection position, which is convenient for use.

[0054] Specifically, the handle 10 disclosed in this embodiment can be produced by manufacturing the main body 12, the docking joint 14 and the protective cover 15 separately, or it can be integrally formed of hard plastic. The integral molding can enhance the overall strength of the structure and eliminate the need for assembly between parts, thus avoiding assembly gaps and facilitating long-term use.

[0055] For example Figure 2 , Figure 3 and Figure 4 As shown, as another implementation of this embodiment, a slot 132 is formed on the adjustment structure 13 along the radial direction, and the slot 132 is connected to the second channel 131; the puncture biopsy needle also includes a locking structure 50, which is nested in the slot 132 and can extend into the second channel 131 to lock the ultrasonic probe 30.

[0056] The ultrasonic probe 30 disclosed in this embodiment is movable in the sampling channel 40, but during use, the biopsy needle 20 is also moving, and the ultrasonic probe 30 is also moving, and the two are prone to collision and interference. Therefore, a locking structure 50 is provided in this embodiment. When the ultrasonic probe 30 extends out of the biopsy needle 20 to a suitable distance, the ultrasonic probe 30 is locked by the locking structure 50, so that it can move as a whole, thereby improving the stability of the puncture biopsy needle during use. After moving to the sampling position, the locking structure 50 is released, and the ultrasonic probe 30 can be freely taken out.

[0057] For example Figure 2As shown, as another implementation of this embodiment, the locking structure 50 is disclosed to include a locking member 51 and a locking knob 52, and the locking member 51 is inserted into the slot 132; the locking knob 52 can be rotatably sleeved on the adjustment structure 13 and cover the port of the slot 132; the locking knob 52 is connected to the locking member 51, and is used to push the locking member 51 to move toward the second channel 131 to abut against the ultrasonic probe 30.

[0058] When the locking knob 52 disclosed in the present embodiment rotates, the inner side abuts against the locking member 51, and the inner side wall of the locking knob 52 can be set to a wave shape, or a plurality of protrusions can be set at intervals, so that during the rotation process, the protrusion position on the inner side of the locking knob 52 abuts against the locking member 51, which can push the locking member 51 to move toward the assembly channel 11, and the ultrasonic probe 30 inserted in the assembly channel 11 will be squeezed, thereby generating friction, which is conducive to restricting the movement of the ultrasonic probe 30 and achieving a fixing effect. It can be seen that the locking structure 50 disclosed in the present embodiment has the advantages of simple structure and convenient operation, and can fix the ultrasonic probe 30 in the sampling channel 40, thereby improving the stability during use.

[0059] In this embodiment, the adjustment structure 13 can be set to a hollow cylindrical shape, and the locking knob 52 is sleeved on the outer surface of the adjustment structure 13, which is easy to rotate. In order to prevent the locking knob 52 from shifting, an annular locking groove can be provided on the outer surface of the adjustment structure 13, and the locking knob 52 can be assembled in the locking groove to prevent the locking knob 52 from shifting or slipping.

[0060] like Figure 3 and Figure 4 As shown, as another implementation of this embodiment, a locking block 122 is disclosed on the inner wall of the main body 12, and the locking block 122 is located at the end of the first channel 121 facing the adjustment structure 13; a plurality of bayonet holes 133 are axially arranged on the outer surface of the adjustment structure 13, and the bayonet holes 133 are adapted to the locking block 122.

[0061] The locking block 122 disclosed in this embodiment is arranged on the inner side of the main body 12. During the movement of the adjustment structure 13, the locking block 122 moves alternately between the multiple bayonet holes 133. When the adjustment structure 13 pushes the biopsy needle 20 to the position aligned with the sampling position, the locking block 122 engages with a bayonet hole 133, thereby achieving the effect of fixing the adjustment structure 13, so that the biopsy needle 20 can remain stable, thereby improving the stability during the sampling operation.

[0062] Specifically, in this embodiment, the locking block 122 can be a protrusion formed on the inner wall of the main body 12, or it can be an assembly part assembled on the main body 12 and connected to the main body 12 as a whole. When the adjustment structure 13 is moving, the locking block 122 can be not assembled first. After the biopsy needle 20 is moved into place, the locking block 122 is inserted into the bayonet 133 to achieve the snap connection.

[0063] For example Figure 3 and Figure 4 As shown, as another implementation of this embodiment, a first gripping seat 123 is provided on the main body 12, and a first buckle position 1231 for gripping is provided on the first gripping seat 123. The first gripping seat 123 is provided on the outer surface of the main body 12 disclosed in this embodiment for easy gripping, thereby improving stability during operation.

[0064] In another implementation of this embodiment, the adjustment structure 13 is provided with a second gripping seat 134, and the second gripping seat 134 is provided with a second buckle position 1341 for gripping. By providing the second gripping seat 134, it is convenient to push the adjustment structure 13, thereby moving the needle core 22. When the adjustment structure 13 is locked, the second gripping seat 134 can also remain stationary, so the first buckle position 1231 and the second buckle position 1341 are provided to facilitate the operator to grasp multiple parts, improve the stability of the gripping handle 10, and further improve the stability during the puncture biopsy process.

[0065] For example Figure 2 As shown, as another implementation of this embodiment, the biopsy needle 20 is disclosed to include a needle core 22 and a retractable outer sleeve 23, the needle core 22 is inserted into the first channel 121 and connected to the adjustment structure 13; the needle core 22 is hollow to form the central channel 21; the retractable outer sleeve 23 is connected to the protective sleeve 15 and is sleeved on the outside of the needle core 22.

[0066] In this embodiment, the needle core 22 of the biopsy needle 20 is used for puncture. During the biopsy process, the biopsy needle 20 is inserted into the cavity, and the needle core 22 is aligned with the sampling position. Then, after the ultrasonic probe 30 is pulled out, it is extended forward to cut the tissue directly in front of the needle core 22 to obtain a sample.

[0067] Specifically, as another implementation of this embodiment, it is disclosed that the needle core 22 in this embodiment can be made of a metal material with high hardness to facilitate puncture, and the retractable outer sleeve 23 can adopt a structure of a spring tube wrapped in a plastic tube to facilitate telescoping and bending. In this embodiment, the needle core 22 can adopt a 10-17G needle, where G represents the outer diameter (Gauge). For every increase of one unit of thick needle, the outer diameter decreases by 0.2mm; for every decrease of one unit, the outer diameter increases by 0.2mm; and the outer diameter and inner diameter of the needle core 22 correspond to each other. By selecting a needle core 22 with a suitable outer diameter, various types of ultrasonic probes 30 disclosed in this embodiment can be adapted. For example, in this embodiment, a 17G needle core 22 can be used, with an outer diameter of 1.5mm and an inner diameter of 1.1mm, that is, the caliber of the sampling channel 40 is 1.1mm, which can be matched with an ultrasonic probe 30 with an outer diameter of 1mm to achieve smooth assembly and achieve the effect of visual puncture biopsy.

[0068] Specifically, as another implementation of this embodiment, the retractable outer sleeve 23 is disclosed to include an inner spring tube and an outer plastic tube. The retractable outer sleeve 23 is used to accommodate the needle core 22, and the needle core can extend a certain length outside the retractable outer sleeve 23 under the action of the adjustment structure 13 to complete the sampling operation. The retractable outer sleeve 23 is bendable and can adapt to the cavity environment in the human body. Specifically, the inner spring tube can prevent the inner wall of the needle core from being damaged when it is retracted, and the outer plastic tube is a medical plastic tube that can directly contact the human body structure and play a role in accommodating the needle core before puncture sampling.

[0069] Specifically, as another implementation of this embodiment, the ultrasonic probe 30 is disclosed to include an outer sheath assembled in the needle core 22, and a transmission line, a first transducer and a second transducer arranged in the outer sheath, and the frequency of the first transducer is less than the frequency of the second transducer. In this embodiment, a first transducer and a second transducer with different frequencies are used to facilitate adaptation to various usage scenarios. Specifically, the first transducer and the second transducer can use any two frequency combinations of 7MHz, 12MHz, 20MHz, and 40MHz, thereby improving the ultrasonic range and ultrasonic depth of the ultrasonic probe 30 to enhance the effect of ultrasonic examination, and further, it is conducive to improving the working accuracy of the puncture biopsy needle, improving the accuracy of operation, and increasing the safety of surgery.

[0070] In summary, the present application discloses a puncture biopsy needle, which includes a handle 10, a biopsy needle 20 and an ultrasonic probe 30. The handle 10 is provided with an assembly channel 11; the biopsy needle 20 is connected to the handle 10 and inserted in the assembly channel 11; a central channel 21 is formed in the biopsy needle 20 along the axial direction; the central channel 21 is connected to the assembly channel 11 to form a sampling channel 40; the ultrasonic probe 30 is detachably arranged in the sampling channel 40, and is used to extend to the front of the biopsy needle 20 to observe the position to be sampled. The puncture biopsy needle disclosed in this embodiment is connected to the biopsy needle 20 at the front end of the handle 10, so that the assembly channel 11 and the central channel 21 are connected to form the sampling channel 40. When performing a biopsy on a narrow cavity, first insert the ultrasonic probe 30 into the sampling channel 40, observe the image in front of the biopsy needle 20 through the ultrasonic probe 30, and guide the biopsy needle 20 to approach the sampling position according to the image; after aligning with the sampling position, sampling can be performed; or, the ultrasonic probe 30 can be pulled out, and a syringe can be connected externally, and then the needle can be pushed out for sampling. By forming a sampling channel 40 in the center of the handle 10 and the biopsy needle 20, the ultrasonic probe 30 can be inserted for observation before sampling, so as to facilitate the alignment of the biopsy needle 20 with the sampling position, simplify the biopsy sampling process, realize the operation of visual puncture biopsy, improve the sampling accuracy of the puncture biopsy needle, and help reduce the number of sampling times, shorten the operation time, reduce tissue damage, and improve the safety of the operation.

[0071] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0072] It should be noted that the utility model takes a puncture biopsy needle as an example to introduce the specific structure and working principle of the utility model, but the application of the utility model is not limited to the puncture biopsy needle, and can also be applied to the production and use of other similar workpieces.

[0073] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A puncture biopsy needle, characterized in that: include: A handle, wherein the handle is provided with an assembly hole; A biopsy needle is connected to the handle and inserted in the assembly channel; a central channel is formed in the biopsy needle along the axial direction; the central channel is connected to the assembly channel to form a sampling channel; The ultrasonic probe is detachably arranged in the sampling channel and is used to extend to the front of the biopsy needle to observe the position to be sampled.

2. The puncture biopsy needle according to claim 1, characterized in that: The handle comprises: A main body, wherein the main body is hollow and has a first channel arranged in an axial direction; An adjustment structure connected to the main body and slidably disposed in the first hole; a second hole is formed in the hollow of the adjustment structure, and the second hole and the first hole together constitute the assembly hole; Wherein, the biopsy needle is inserted from the head end of the first channel and connected to the head end of the adjustment structure; the central channel is connected to the second channel to form the sampling channel.

3. The puncture biopsy needle according to claim 2, characterized in that: The handle comprises a docking joint, which is arranged at the rear end of the adjusting structure and is used for externally connecting to a syringe.

4. The puncture biopsy needle according to claim 2, characterized in that: The handle comprises a protective sleeve, which is arranged at the head end of the main body and is used for being sleeved onto the biopsy needle.

5. The puncture biopsy needle according to claim 4, characterized in that: The biopsy needle comprises: A needle core is inserted into the first hole and connected to the adjustment structure; the needle core is hollow to form the central hole; A retractable outer sleeve is connected to the protective sleeve and is sleeved on the outer side of the needle core.

6. The puncture biopsy needle according to claim 5, characterized in that: The telescopic outer sleeve comprises an inner spring tube and an outer plastic tube.

7. The puncture biopsy needle according to claim 5, characterized in that: The ultrasonic probe comprises an outer sheath tube assembled in the needle core, and a transmission line, a first transducer and a second transducer arranged in the outer sheath tube, wherein the frequency of the first transducer is lower than the frequency of the second transducer.

8. The puncture biopsy needle according to claim 2, characterized in that: The adjusting structure is provided with a slot along the radial direction, and the slot is communicated with the second hole; The puncture biopsy needle also includes a locking structure, which is nested in the slot and can extend into the second channel to lock the ultrasonic probe.

9. The puncture biopsy needle according to claim 8, characterized in that: The locking structure comprises: A locking member, inserted into the slot; The locking knob is rotatably mounted on the adjusting structure and covers the port of the slot; the locking knob is connected to the locking member and is used to push the locking member to move toward the second channel to abut against the ultrasonic probe.

10. The puncture biopsy needle according to claim 2, characterized in that: A locking block is provided on the inner wall of the main body, and the locking block is located at the end of the first channel facing the adjustment structure; A plurality of bayonet holes are axially arranged on the outer surface of the adjustment structure, and the bayonet holes are adapted to the locking block.

Images