Patent ID: 12232709

1. inner needle assembly;11. first outer limiting wall;111. first limiting plate;1111. first protrusion;12. first hole;13. first connection portion;14. first needle body;15. first gap;2. outer needle assembly;21. second outer limiting wall;211. second limiting plate;2111. second protrusion;22. second hole;23. second connection portion;24. second needle body;25. second gap;3. protective cover;4. fastener;41. first inner limiting wall;411. first groove;42. second inner limiting wall;421. second groove;43. pull portion;44. through hole;6. biopsy gun; and61. cover.

DESCRIPTION OF EMBODIMENTS

The following describes example embodiments of the present invention with reference to the accompanying drawings, including various details of the embodiments of the present invention to facilitate understanding. Therefore, the description should be merely regarded as examples. Therefore, a person of ordinary skill in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Likewise, for clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

As shown inFIG.1,FIG.2,FIG.3,FIG.4, andFIG.5, a biopsy needle in the present invention includes: an inner needle assembly1, including a first plug-in portion plugged in with a fastener4, where the first plug-in portion includes two first outer limiting walls11arranged in parallel and a first limiting plate111located between the two first outer limiting walls11, and the first limiting plate111is provided with a first protrusion1111;an outer needle assembly2, including a second plug-in portion plugged in with the fastener4, where the second plug-in portion includes two second outer limiting walls21arranged in parallel and a second limiting plate211located between the two second outer limiting walls21, and the second limiting plate211is provided with a second protrusion2111; andthe fastener4, including a third plug-in portion plugged in with the first plug-in portion, and a fourth plug-in portion plugged in with the second plug-in portion, where the third plug-in portion includes two first inner limiting walls41that have a T-shaped longitudinal section and that match the first outer limiting walls11(the first inner limiting wall41having a T-shaped longitudinal section includes two plate cuboid objects perpendicular to each other, of which an upper platy object is horizontally arranged, and a lower platy object is vertically arranged), and a third limiting plate arranged between the two first inner limiting walls41and matching the first limiting plate111(the third limiting plate is arranged in parallel with the upper platy object of the first inner limiting wall41), where the third limiting plate is provided with a first groove411for mating with the first protrusion1111; and the fourth plug-in portion includes two second inner limiting walls42that have a T-shaped longitudinal section and that match the second outer limiting walls21(the second inner limiting wall42having a T-shaped longitudinal section includes two plate cuboid objects perpendicular to each other, of which an upper platy object is horizontally arranged, and a lower platy object is vertically arranged), and a fourth limiting plate arranged between the second inner limiting walls42and matching the second limiting plate211(the fourth limiting plate is arranged in parallel with the upper platy object of the second inner limiting wall42), where the fourth limiting plate is provided with a second groove421for mating with the second protrusion2111. The inner needle assembly1and the fastener4are plugged in together through the first protrusion1111of the first plug-in portion and the first groove411of the third plug-in portion, and the outer needle assembly2and the fastener4are plugged in together through the second protrusion2111of the second plug-in portion and the second groove421of the fourth plug-in portion. With this connection method, assembly and disassembly operations are simple, and assembly and disassembly time is short, helping reduce preparation time and preparation work for medical staff in a surgery, thereby improving surgery efficiency.

The first outer limiting walls11are arranged perpendicular to the first limiting plate111(the first outer limiting wall11is parallel with the lower platy object of the first inner limiting wall41, and the first limiting plate111is parallel with the third limiting plate), and a first gap15is provided between each of the first outer limiting walls11and the first limiting plate111; two first sliding slots are symmetrically provided on a surface of the first limiting plate111facing away from the first protrusion1111; the second outer limiting walls21are arranged perpendicular to the second limiting plate211(the second outer limiting wall21is parallel with the lower platy object of the second inner limiting wall42, and the second limiting plate211is parallel with the fourth limiting plate), and a second gap25is provided between each of the second outer limiting walls21and the second limiting plate211; and two second sliding slots are symmetrically provided on a surface of the second limiting plate211facing away from the second protrusion2111.

A third gap is provided between each of the first inner limiting walls41and the third limiting plate. When the fastener4is connected to the inner needle assembly1, the first inner limiting walls41are inserted into the first gaps15, the first limiting plate111is inserted into the third gaps, the first sliding slots abut against the top of the first inner limiting walls41(the first sliding slot mates with the upper platy object of the first inner limiting wall41, and the first sliding slot is located below the upper platy object of the first inner limiting wall41), and the first limiting plate111abuts against the third limiting plate, so that the first protrusion1111mates with the first groove411. When the fastener4needs to be separated from the inner needle assembly1, the first protrusion1111is pulled out from the first groove411by pulling up the third plug-in portion, so that the first inner limiting walls41are pulled out from the first gaps15, and the first limiting plate111is separated from the third limiting plate. With this connection method, assembly and disassembly are simple, and assembly and disassembly time is short.

A fourth gap is provided between each of the second inner limiting walls42and the third limiting plate. When the fastener4is connected to the outer needle assembly2, the second inner limiting walls42are inserted into the second gaps25, the second limiting plate211is inserted into the fourth gaps, the second sliding slots abut against the top of the second inner limiting walls42, and the second limiting plate211abuts against the fourth limiting plate, so that the second protrusion2111mates with the second groove421. When the fastener4needs to be separated from the outer needle assembly2, the second protrusion2111is pulled out from the second groove421by pulling up the fourth plug-in portion, so that the second inner limiting walls42are pulled out from the second gap25, and the second limiting plate211is separated from the fourth limiting plate. With this connection method, assembly and disassembly are simple, and assembly and disassembly time is short.

The inner needle assembly1is nested within the outer needle assembly2, and the first plug-in portion protrudes from the outer needle assembly2. The inner needle assembly1can move inside the outer needle assembly2during use.

The outer needle assembly2further includes a hollow second needle body24at one end of the second plug-in portion, the second needle body24has openings at both ends, and the end of the second needle body24is of a needle-like structure; the inner needle assembly1further includes a first needle body14at one end of the first plug-in portion, and the end of the first needle body14is of a needle-like structure disposed in a direction opposite the needle-like structure at the end of the second needle body24; and an accommodating portion (not shown) is provided on the first needle body14at a location close to the end of the first needle body14. When the biopsy needle is in use, the first needle body14moves out from the end of the second needle body24, the end of the first needle body14is inserted into a to-be-sampled skin tissue, and the second needle body24moves quickly to cover the first needle body14, so that a small piece of the skin tissue is cut off and stored in the accommodating portion.

The first plug-in portion further includes a first connection portion13connected to the first needle body14, and a first hole12; planes corresponding to the first limiting plate111, the first connection portion13, and the first hole12are perpendicular to each other, the first plug-in portion includes a cuboid-shaped first body, and the first limiting plate111, the first connection portion13, and the first hole12are located on three mutually perpendicular and adjacent planes of the first body; and the biopsy needle is connected to a biopsy gun6through the first hole12, and the first plug-in portion is connected to the first needle body14through the first connection portion13.

The second plug-in portion further includes a second connection portion23connected to the second needle body24, and a second hole22; planes corresponding to the second limiting plate211, the second connection portion23, and the second hole22are perpendicular to each other, the second plug-in portion includes a cuboid-shaped second body, and the second limiting plate211, the second connection portion23, and the second hole22are located on three mutually perpendicular and adjacent planes of the second body; and the biopsy needle is connected to the biopsy gun6through the second hole22. The second plug-in portion further includes a third connection portion (not shown) on a same axis as the second connection portion23, the third connection portion runs through the second plug-in portion23and the second needle body24, and the first needle body14enters the second plug-in portion through the third connection portion, and then enters the second needle body24. The second plug-in portion includes the cuboid-shaped second body, the second limiting plate211, the second connection portion23, and the second hole22are located on three mutually perpendicular and adjacent planes of the second body, the third connection portion, the second limiting plate211, and the second hole22are located on three mutually perpendicular and adjacent planes of the second body, and a plane corresponding to the third connection portion is parallel to a plane corresponding to the second connection portion23.

The second needle body24is further provided with a cylindrical protective cover3wrapping the second needle body24. The protective cover3can protect the second needle body24against contamination, further preventing a surgery from being affected. Therefore, when the biopsy needle is not in use, the protective cover3is sleeved on the second needle body24, and when the biopsy needle needs to be used, the protective cover3can be removed directly.

The third plug-in portion and the fourth plug-in portion are on a same side of the fastener4and arranged in parallel.

The fastener4further includes a pull portion43and a through hole44on one side of the pull portion43. When the fastener4needs to be separated from the inner needle assembly1and the outer needle assembly2, an operator grasps the pull portion43and the through hole44to remove the fastener4from the inner needle assembly1and the outer needle assembly2. The through hole44can be used as a force exertion point. Through the through hole44, the operator can easily remove the fastener4from the inner needle assembly1and the outer needle assembly2.

As shown inFIG.6, a puncture biopsy apparatus according to the present invention includes a biopsy gun and a biopsy needle. When in use, a cover61of the biopsy gun6is opened, then the biopsy needle is fastened on the biopsy gun6through a first hole12and a second hole22, and then a fastener4is removed from the biopsy needle by separate the fastener4from an inner needle assembly1and an outer needle assembly2. Specifically, an operator holds a pull portion43, then pulls the pull portion43outward or upward, and then closes the cover61after the fastener4is removed to complete the installation of the biopsy gun6. Therefore, the biopsy needle can be assembled and disassembled in a simple and fast way, helping reduce preparation time and work for a surgery, and improving work efficiency of medical staff. In addition, the biopsy needle in the present invention has a simple structure and therefore can reduce mold costs for the biopsy needle and time for an employee to assemble the biopsy needle, thereby reducing production costs for a company.

The foregoing embodiments do not constitute any limitation on the protection scope of the present invention. A person skilled in the art should understand that, various modifications, combinations, sub-combinations, and substitutions may be made depending on a design requirement and other factors. Any modification, equivalent replacement, and improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.