Biopsy collection system and biopsy collection method

Abstract

The present invention discloses a biopsy collection system and a biopsy collection method, which relate to the technical field of medical equipment. In the biopsy collection system, the conversion device includes a converter and a conversion rotary drive device, the converter is connected to the output shaft of the conversion rotary drive device, and the converter includes two accommodating chambers, which are connected through an airway. The conversion rotary drive device drives the converter to rotate so that the two accommodating chambers alternately serve as the front accommodating chamber and the rear accommodating chamber. The gas in the inner knife tube can enter the collection device through the front accommodating chamber, the airway, and the rear accommodating chamber in sequence. The tissue sample in the inner knife tube can enter the front accommodating chamber for temporary storage. After the front accommodating chamber is rotated to the rear accommodating chamber, the temporarily stored tissue sample flows to the collection device through the rear accommodating chamber. Based on the setting of the converter and the conversion rotary drive device in the conversion device, the two accommodating chambers of the converter can adjust the transmission direction of the sample, and the positions of different components such as the collection device in the conversion device can be set as needed, which is more convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a biopsy collection system and a biopsy collection method. Background Art

[0002] Current biopsy collection systems are primarily used for sampling and examining collected tissue or for minimally invasive excision of certain tissues. During use, a needle or knife tube of the collection system cuts tissue, such as breast tissue, and then transfers the cut tissue to a collection device.

[0003] The cut tissue is often mixed with impurities such as blood, and the cut tissue is generally small in shape. To facilitate the collection of the cut tissue, in existing biopsy collection systems, a collection device is often placed behind the position where the collection needle or knife tube is directly facing. The collection device is connected to the needle or knife tube through a straight tube, and the cut tissue is transferred to the collection device in a straight line from front to back. The tissue in the collection device is then processed in other ways, such as for pathological examination when it is used for sampling and inspection. However, this collection system placed behind the biopsy collection system has limited operating space and requires a sterile protective cover at the rear of the biopsy collection system. It is difficult to replace the collection device and to take samples, which brings inconvenience to the use of the biopsy collection system.

[0004] Therefore, how to provide a more convenient biopsy collection system is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide a biopsy collection system that is more convenient to use.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A biopsy collection system comprising a needle and a tissue sample holder assembly, wherein the needle is configured to collect a tissue sample and deliver the tissue sample to the tissue sample holder assembly;

[0008] The tissue sample holder assembly includes a housing, an inner knife tube, a conversion device, a collection device and a vacuum tube, and the needle is arranged on the inner knife tube;

[0009] The conversion device includes a converter and a conversion rotation drive device, the converter is connected to the output shaft of the conversion rotation drive device, the converter includes two accommodating chambers, and the two accommodating chambers are connected through an airway; the conversion rotation drive device drives the converter to rotate, so that the two accommodating chambers alternately serve as the front accommodating chamber and the rear accommodating chamber;

[0010] The gas in the inner knife tube can enter the collecting device through the front accommodating chamber, the air channel, and the rear accommodating chamber in sequence;

[0011] The tissue sample in the inner knife tube can enter the front accommodating chamber for temporary storage. After the front accommodating chamber is rotated into the rear accommodating chamber, the temporarily stored tissue sample flows to the collecting device through the rear accommodating chamber.

[0012] Preferably, the converter includes a rotating core and a covering structure; a connecting groove is provided at one end of the rotating core close to the covering structure, and two side holes extending axially are provided on the rotating core, and the two side holes are connected through the connecting groove at one end in the axial direction, and an opening is provided at the other end to connect with the external space of the rotating core; the covering structure covers the notch of the connecting groove so that the connecting groove after covering forms the air channel; and an accommodating cavity is provided in each of the side holes.

[0013] Preferably, the converter includes a rotating shaft plate; the rotating shaft plate includes a connecting portion and the covering structure, the connecting portion is fixedly connected to the covering structure, the covering structure is provided with a recessed structure, the rotating core is axially inserted into the recessed structure, the rotating shaft plate is connected to the conversion rotation drive device through the connecting portion, and the rotating core is driven to rotate synchronously through the recessed structure.

[0014] Preferably, a cylindrical end plate is provided on the accommodating cavity, a cylindrical air hole is provided on the cylindrical end plate, and the accommodating cavity is ventilated with the airway through the cylindrical air hole;

[0015] After the tissue sample enters the front accommodating chamber, it moves in the front accommodating chamber at most until it abuts against the barrel end plate of the front accommodating chamber.

[0016] Preferably, the converter also includes a conversion core; the conversion core includes a U-shaped structure consisting of two side rods and a connecting rod connected between the two side rods, each side rod is respectively provided with an accommodating cavity, and the two side rods are respectively inserted into the two side holes.

[0017] Preferably, the conversion device further comprises a connector for transferring the tissue sample of the inner knife tube to the front accommodating chamber, and for transferring the tissue sample of the rear accommodating chamber to the collecting device, the connector comprising a front connecting tube and a rear connecting tube; one tube end of the front connecting tube is connected to the outlet of the inner knife tube, and the other tube end is used to connect to the front accommodating chamber; one tube end of the rear connecting tube is used to connect to the rear accommodating chamber, and the other tube end is connected to the collecting device; the conversion rotation drive device drives the converter to rotate, so that the two accommodating chambers alternately dock with the front connecting tube and the rear connecting tube.

[0018] Preferably, the connecting member further comprises a mounting plate; a first through hole and a second through hole are provided on the mounting plate; one pipe end of the front connecting pipe is connected to the outlet of the inner knife tube, and the other pipe end is connected to the first through hole, so as to be connected to the front accommodating chamber through the first through hole; one pipe end of the rear connecting pipe is connected to the second through hole, so as to be connected to the rear accommodating chamber through the second through hole, and the other pipe end is connected to the collecting device; an end face of one pipe end of the front connecting pipe, an end face of one pipe end of the rear connecting pipe, and a side face of the mounting plate are coplanar;

[0019] The conversion rotation driving device drives the converter to rotate, so that the two accommodating cavities are alternately connected with the first through hole and the second through hole.

[0020] Preferably, the converter further includes a converter housing and a converter cap; the converter housing and the converter cap are axially arranged in sequence and fixedly connected, and a mounting cavity is formed between the two, the accommodating cavity and the mounting plate are built into the mounting cavity, the converter housing and the converter cap axially press the mounting plate into the accommodating cavity, and the front connecting tube and the rear connecting tube extend out of the mounting cavity through the through hole on the converter cap.

[0021] Preferably, the collecting device is disposed outside the housing, and the collecting device is located at the front end of the housing.

[0022] Preferably, part of the wall surface of the front end surface of the shell is recessed backward to form a recessed surface, and the collecting device is arranged in the recessed surface.

[0023] Preferably, the outlet of the inner knife tube is connected to the feed channel of the collecting device through the conversion device, and the suction channel of the collecting device is connected to a port of the vacuum tube; a collecting chamber is provided in the collecting device, and a filter plate is provided in the collecting chamber, and the space in the collecting chamber located on one side of the filter plate constitutes a receiving space, and the receiving space and the feed channel are located on the same side of the filter plate, and the suction channel is located on the other side of the filter plate, so that the tissue entering the collecting chamber through the feed channel can be accommodated in the receiving space; an air vent is provided on the filter plate, and the gas in the inner knife tube can enter the receiving space through the conversion device and the feed channel in sequence, and then enter the vacuum tube through the air vent and the suction channel in sequence.

[0024] Preferably, the collecting device includes an outer collecting shell and an inner collecting shell, the inner collecting shell is arranged in the outer collecting shell, part of the plate surface of the inner collecting shell is set as the filter plate, the space between the inner collecting shell and the outer collecting shell forms a filter cavity, and the material receiving space is arranged in the inner collecting shell; the air suction channel is arranged on the outer collecting shell to connect the filter cavity with the vacuum tube, and the feed channel is arranged on the inner collecting shell and the outer collecting shell to connect the material receiving space with the inner knife tube.

[0025] Preferably, the filter plate is arranged at the bottom of the material receiving space.

[0026] Preferably, the collecting device comprises a collecting device cover and a collecting device body with an opening on one side, and the collecting device cover is detachably sealed to the opening of the collecting device body.

[0027] Preferably, a feed pipe and an air pipe are protruding from the outer surface of the collecting device, the feed pipe and the air pipe are arranged on the outer shell, the feed channel includes the feed pipe, and the air suction channel includes the air pipe.

[0028] A biopsy collection method, using the above biopsy collection system, the method comprising:

[0029] Controlling the negative pressure device connected to the vacuum tube to start, and providing negative pressure to the vacuum tube;

[0030] Controlling the conversion rotation drive device to start once every set time interval, so that the two accommodating chambers alternately serve as the front accommodating chamber and the rear accommodating chamber;

[0031] Wherein, the cut tissue sample enters the front accommodating chamber through the inner knife tube under the action of the negative pressure, and the tissue sample in the rear accommodating chamber enters the collecting device under the action of the negative pressure.

[0032] The biopsy collection system provided by the present invention includes a needle and a tissue sample holder assembly, wherein the needle is configured to collect tissue samples and transfer the tissue samples to the tissue sample holder assembly. The tissue sample holder assembly includes an outer shell, an inner knife tube, a conversion device, a collection device and a vacuum tube, and the needle is arranged on the inner knife tube. The conversion device includes a converter and a conversion rotation drive device, the converter is connected to the output shaft of the conversion rotation drive device, and the converter includes two accommodating chambers, and the two accommodating chambers are connected through an airway. The conversion rotation drive device drives the converter to rotate so that the two accommodating chambers alternately serve as the front accommodating chamber and the rear accommodating chamber. The gas in the inner knife tube can enter the collection device through the front accommodating chamber, the airway, and the rear accommodating chamber in sequence. The tissue sample in the inner knife tube can enter the front accommodating chamber for temporary storage. After the front accommodating chamber is rotated to the rear accommodating chamber, the temporarily stored tissue sample flows to the collection device through the rear accommodating chamber.

[0033] After the inner knife tube is sampled, the movement of gas and tissue samples is involved:

[0034] As for the movement of gas, it enters the front accommodating chamber, the airway, the rear accommodating chamber from the inner knife tube, and then enters the collecting device through the feed channel, forming a gas passage for unidirectional flow of gas through the two accommodating chambers;

[0035] Regarding the movement of the sample, after the tissue sample is cut and adsorbed on the inner knife tube, it enters the front accommodating chamber from the inner knife tube and is temporarily stored in the front accommodating chamber. The conversion rotation drive device drives the converter to rotate, and the accommodating chamber loaded with the sample switches its position to serve as the rear accommodating chamber. At the same time, the accommodating chamber originally serving as the rear accommodating chamber switches its position to serve as the front accommodating chamber. After the switch, the sample temporarily stored in the current rear accommodating chamber enters the collection device from the current rear accommodating chamber, and the current front accommodating chamber can continue to collect samples.

[0036] Based on the settings of the converter and the conversion rotation drive device in the conversion device, the two accommodating chambers in the converter can adjust the transmission direction of the sample, so that after the sample enters a accommodating chamber, and then the conversion rotation drive device drives the converter to rotate, the sample can still be moved out from the port that previously entered the accommodating chamber, which is equivalent to making the entry direction and the removal direction of the sample opposite, so that the movement direction of the sample can be adjusted as needed. There is no need for the sample to always move in one direction, and the positions of different components in the conversion device can be set as needed. Accordingly, the collection device does not need to be set at the rear of the biopsy collection system as in the prior art. For example, the collection device can be placed in front to facilitate sampling and replacement of the collection device, thereby making the biopsy collection system more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0038] Figure 1 This is a diagram of the internal structure of the biopsy collection system provided by the present invention;

[0039] Figure 2 for Figure 1 Appearance diagram;

[0040] Figure 3 for Figure 2 The main view;

[0041] Figure 4 for Figure 2 A top view of

[0042] Figure 5 An exploded view of a converter in the biopsy collection system provided by the present invention;

[0043] Figure 6 This is an assembly diagram of the converter in the biopsy collection system provided by the present invention.

[0044] Figure 7 An axial cross-sectional view of various components of the converter in the biopsy collection system provided by the present invention;

[0045] Figure 8 An axial cross-sectional view of the assembled converter in the biopsy collection system provided by the present invention;

[0046] Figure 9 An assembly diagram of the converter and connector in the biopsy collection system provided by the present invention;

[0047] Figure 10 for Figure 9 Axial cross-sectional view of

[0048] Figure 11 This is a first-direction appearance diagram of the assembled rotating core and the conversion core in the biopsy collection system provided by the present invention;

[0049] Figure 12 This is a second-direction appearance diagram of the assembled rotating core and the conversion core in the biopsy collection system provided by the present invention;

[0050] Figure 13 for Figure 12 Right side view;

[0051] Figure 14 for Figure 13 FF cross-sectional view;

[0052] Figure 15 for Figure 12 Left side view;

[0053] Figure 16 This is an appearance diagram of the conversion core in the biopsy collection system provided by the present invention in the first direction;

[0054] Figure 17 This is a second-direction appearance diagram of the conversion core in the biopsy collection system provided by the present invention;

[0055] Figure 18 An axial cross-sectional view of the conversion core in the biopsy collection system provided by the present invention;

[0056] Figure 19 This is a first-direction appearance diagram of the rotating core in the biopsy collection system provided by the present invention;

[0057] Figure 20 for Figure 19HH sectional view;

[0058] Figure 21 This is a second-direction appearance diagram of the rotating core in the biopsy collection system provided by the present invention;

[0059] Figure 22 This is an exploded view from a first perspective of the rotating shaft plate and the rotating core of the biopsy collection system provided by the present invention;

[0060] Figure 23 An exploded view from a second perspective of the rotating shaft plate and the rotating core of the biopsy collection system provided by the present invention;

[0061] Figure 24 An exploded view of the collection device in the biopsy collection system provided by the present invention;

[0062] Figure 25 A side view of the collection device in the biopsy collection system provided by the present invention;

[0063] Figure 26 for Figure 25 MM section view;

[0064] Figure 27 A front view of the collection device in the biopsy collection system provided by the present invention;

[0065] Figure 28 for Figure 27 AA section view;

[0066] Figure 29 An assembly diagram of the collection device, delivery tube, and vacuum tube in the biopsy collection system provided by the present invention;

[0067] Figure 30 This is a front view of the biopsy collection system provided by the present invention after connecting the cable;

[0068] Figure 31 for Figure 30 Front view after the sterile protective cover is assembled;

[0069] Figure 32 for Figure 31 A magnified view of the front end;

[0070] Figure 33 A cross-sectional view of the converter in the second embodiment of the biopsy collection system provided by the present invention;

[0071] Figure 34 This is a cross-sectional view of the converter in the third embodiment of the biopsy collection system provided by the present invention.

[0072] Reference numerals:

[0073] Vacuum tube 1;

[0074] Housing 2, recessed surface 21;

[0075] Collecting device 3, feeding channel 31, air suction channel 32, collecting inner shell 33, filter plate 331, air vent 332, slot 333, slide 334, collecting space 34, collecting device cover 35, slide 351, collecting device body 36, filter chamber 37, feeding pipe 38, air pipe 39, collecting outer shell 310;

[0076] Converter power output motor 4, converter power output gear 41, converter power input gear 42;

[0077] Conversion core 5, accommodating cavity 51, cylinder material port 511, cylinder air hole 512, cylinder end plate 513, air channel 53, connecting rod 54, side rod 55;

[0078] Rotating shaft plate 6, covering structure 61, recessed structure 611, rotating shaft rod 62;

[0079] Rotating core 7, side hole 71, connecting groove 72, partition plate 73;

[0080] Connecting member 8, front connecting tube 81, rear connecting tube 82, mounting plate 83, mounting surface 831, first through hole 832, second through hole 833;

[0081] Converter housing 9, converter cap 91, mounting cavity 92;

[0082] Sterile protective cover 10;

[0083] Delivery pipe 11;

[0084] Outer blade tube 12, blade tip 121, cutting groove 122, outer blade tube seat 123, inner blade insert 124, transmission nut 125, input gear 126;

[0085] Inner knife tube 13, inner knife power output gear 131, inner knife power output motor 132;

[0086] Cable 14;

[0087] Front accommodating chamber A, rear accommodating chamber B. DETAILED DESCRIPTION

[0088] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0089] The core of the present invention is to provide a biopsy collection system that is more convenient to use.

[0090] Figures 1 to 32 The basic structure of an embodiment of the biopsy collection system provided by the present invention is shown, including a needle and a tissue sample holder assembly, wherein the needle is configured to collect a tissue sample and transfer the tissue sample to the tissue sample holder assembly.

[0091] The tissue sample holder assembly specifically includes a housing 2 , an inner blade tube 13 , a conversion device, a collection device 3 and a vacuum tube 1 , and the needle is arranged on the inner blade tube 13 .

[0092] The outlet of the inner blade tube 13 is connected to the feed channel 31 of the collecting device 3 through a conversion device, and the suction channel 32 of the collecting device 3 is connected to a port of the vacuum tube 1 .

[0093] like Figures 5 to 8 As shown, the conversion device includes a converter and a conversion rotation drive device. The converter is connected to the output shaft of the conversion rotation drive device. Optionally, the conversion rotation drive device is a converter power output motor 4, which is transmission-connected to the converter via a gear structure. The converter power output motor 4 drives the converter to rotate via the gear structure. In the converter, the axial direction is parallel to the rotation centerline of the output shaft of the conversion rotation drive device.

[0094] The converter includes two accommodating chambers 51, which are used to temporarily store tissue samples. The two accommodating chambers 51 are connected through an airway 53. Figure 8 and Figure 14 As shown, one end of the two accommodating cavities 51, i.e. Figure 8 The left end of the two accommodating chambers 51 is connected through the airway 53, and the other end of the two accommodating chambers 51, i.e. Figure 8 The right end of each barrel is provided with a barrel opening 511. During use, the conversion rotation drive device drives the converter to rotate, so that the two accommodating chambers 51 alternately serve as the front accommodating chamber A and the rear accommodating chamber B. Preferably, the front accommodating chamber A and the rear accommodating chamber B are 180° apart, and the conversion rotation drive device switches the position of the two accommodating chambers 51 by driving the converter to rotate 180°.

[0095] like Figure 8 As shown, the solid line with an arrow indicates the movement direction of the sample, and the dotted line with an arrow indicates the movement direction of the gas.

[0096] As for the movement of gas, it enters the barrel material port 511 on the front accommodating chamber A, the front accommodating chamber A, the air channel 53, the rear accommodating chamber B, the barrel material port 511 on the rear accommodating chamber B from the inner knife tube 13, and then enters the collecting device 3 through the feed channel 31, forming a gas passage for unidirectional gas flow through the two accommodating chambers 51.

[0097] Regarding the movement of the sample, after the tissue sample is cut off and adsorbed on the inner knife tube 13, it enters the front accommodating chamber A from the inner knife tube 13 through the barrel opening 511 of the accommodating chamber 51 serving as the front accommodating chamber A, and is temporarily stored in the front accommodating chamber A. The conversion rotation drive device rotates by driving the converter, and the accommodating chamber 51 loaded with the sample switches its position to serve as the rear accommodating chamber B. At the same time, the accommodating chamber 51 that originally served as the rear accommodating chamber B switches its position to serve as the front accommodating chamber A. After the switch, the sample temporarily stored in the current rear accommodating chamber B enters the collecting device 3 from the barrel opening 511 of the current rear accommodating chamber B, and the current front accommodating chamber A can continue to collect samples.

[0098] In this embodiment, based on the settings of the converter and the conversion rotation drive device in the conversion device, the two accommodating chambers 51 in the converter can adjust the transmission direction of the sample, so that after the sample enters a accommodating chamber 51, after the conversion rotation drive device drives the converter to rotate, the sample can still be moved out from the port that previously entered the accommodating chamber 51, which is equivalent to making the entry direction and the removal direction of the sample opposite, so that the movement direction of the sample can be adjusted as needed, and the sample does not need to always move in one direction. The positions of different components in the conversion device can be set as needed. Accordingly, the collection device 3 does not need to be set at the rear of the biopsy collection system as in the prior art. For example, the collection device 3 can be placed in front to facilitate sampling and replacement of the collection device 3, thereby making the biopsy collection system more convenient to use.

[0099] In particular, since in the converter, after the tissue sample enters the accommodating chamber 51 through the barrel opening 511 of a accommodating chamber 51, it is still moved out of the converter from the barrel opening 511 of the accommodating chamber 51 due to the position switching of the accommodating chamber 51, the sample does not need to make a turning operation inside the converter. For harder and pathological tissue samples, it can be avoided that the sample gets stuck in the converter and affects the sample collection efficiency.

[0100] Furthermore, if Figure 7 As shown, the converter includes a rotating core 7 and a cover structure 61. The cover structure 61 is fixed to the output shaft of the conversion rotation drive device. In the axial direction, the cover structure 61 and the rotating core 7 are arranged in sequence, and the rotating core 7 is close to one end of the cover structure 61, that is, Figure 8 A connecting groove 72 is provided at the left end of the central rotating core 7. Two axially extending side holes 71 are provided on the rotating core 7. The two side holes 71 are connected at one axial end through the connecting groove 72, and an opening is provided at the other end to connect to the external space of the rotating core 7. The cover structure 61 covers the notch of the connecting groove 72, and the sealed connecting groove 72 forms an airway 53. A receiving cavity 51 is provided in each side hole 71. In this embodiment, the airway 53 is formed by connecting the split cover structure 61 and the rotating core 7, which facilitates processing.

[0101] Furthermore, if Figure 8 , Figure 22 and Figure 23 As shown, a recessed structure 611 is provided on the cover structure 61. The rotating core 7 is inserted axially into the recessed structure 611, and the rotating shaft plate 6 drives the rotating core 7 to rotate synchronously through the recessed structure 611. The plug-in fit is used to connect the cover structure 61 and the rotating core 7, as well as to seal the connection groove 72, facilitating assembly.

[0102] Specifically, if Figure 8 As shown, the converter includes a rotating shaft plate 6. The rotating shaft plate 6 comprises a connecting portion and the aforementioned cover structure 61, which are fixedly connected for synchronous movement. The rotating shaft plate 6 is connected to the output shaft of the conversion rotation drive device via the connecting portion. More specifically, the connecting portion is a rotating shaft rod 62, which is fixed to the end of the cover structure 61 axially away from the recessed structure 611, forming a T-shaped plate member. Optionally, the output shaft of the conversion rotation drive device is connected to the rotating shaft rod 62 via a gear structure.

[0103] Of course, in other embodiments, the air channel 53 may also be directly configured as a hole structure machined on an integral block.

[0104] Furthermore, if Figure 14 As shown, a cylindrical end plate 513 is provided on the accommodating chamber 51, and a cylindrical air hole 512 is provided on the cylindrical end plate 513. The accommodating chamber 51 is ventilated with the airway 53 through the cylindrical air hole 512. The tissue sample can be moved toward the front accommodating chamber A from the inner knife tube 13 by the vacuum effect, and after the tissue sample enters the front accommodating chamber A, under the vacuum effect, it moves in the front accommodating chamber A at most until it contacts the cylindrical end plate 513 of the front accommodating chamber A. Specifically, Figure 16 As shown, the barrel end plate 513 is located at the end of the accommodating chamber 51 near the rotating shaft plate 6. It defines a barrel air hole 512. Specifically, multiple barrel air holes 512 may be provided, preferably circular through-holes with a diameter of approximately 1 mm. The connecting groove 72 communicates with the accommodating chamber 51 through the barrel air holes 512. In this embodiment, the barrel end plate 513 serves both as a ventilation and a tissue barrier, effectively preventing tissue samples from moving between the two accommodating chambers 51.

[0105] Furthermore, if Figures 14 to 20 As shown, the converter further includes a conversion core 5. The conversion core 5 can rotate together with the rotating core 7. Specifically, in this embodiment, the rotating core 7, the rotating shaft plate 6, and the conversion core 5 are split structures and are connected as a whole through assembly; in other embodiments, the rotating core 7, the rotating shaft plate 6, and the conversion core 5 can also be integrally formed; or, the rotating core 7 and the conversion core 5 are integrally formed, and the rotating shaft plate 6 is then assembled to the integrally formed structure; or, the rotating core 7 and the rotating shaft plate 6 are integrally formed, and the conversion core 5 is then assembled to the integrally formed structure.

[0106] The conversion core 5 includes a U-shaped structure consisting of two side rods 55 and a connecting rod 54 connected between the two side rods 55 . Each side rod 55 is provided with an accommodating cavity 51 , and the two side rods 55 are respectively inserted into the two side holes 71 .

[0107] Specifically, in this embodiment, referring to Figure 8 The two accommodating cavities 51 are arranged in parallel with each other in the axial direction. More specifically, a plane passing through the rotation center line of the converter is used as a reference plane. The two accommodating cavities 51 are respectively arranged on both sides of the reference plane, and the two accommodating cavities 51 are symmetrical with respect to the reference plane.

[0108] Of course, in other embodiments, the axial direction of the two accommodating cavities 51 may also have an angle less than 180°. Accordingly, the conversion core 5 may also be configured with two side rods 55 in a V-shaped structure. In this case, the two side rods 55 may also be an asymmetric structure. The angle θ between the axial directions of the two accommodating cavities 51 may be selected to change the angle of the conveying direction as needed, for example Figure 33 Example 2 and Figure 34 In Example 3, the axial angle between the two accommodating chambers 51 is set at 90°. In this case, the rotating core, the rotating shaft plate 6, and the conversion core 5 can be an integrated structure, and the accommodating chamber 51 still communicates with the air passage 53 through the cylinder air holes 512. The two accommodating chambers 51 of the conversion core 5 are connected to the front connecting tube 81 and the rear connecting tube 82, respectively. The front connecting tube 81 and the rear connecting tube 82 extend in the same direction as the connected accommodating chambers 51. The two connecting tubes are rotatably connected to the conversion core 5. As an embodiment, the two connecting tubes can be fixedly connected.

[0109] In addition, in this embodiment, in the circumferential direction, the two accommodating chambers 51 are spaced 180° apart, and the two accommodating chambers 51 are switched between the front accommodating chamber A and the rear accommodating chamber B by rotating the converter 180°; in other embodiments, the interval between the two accommodating chambers 51 can also be other angles, such as 160°. When switching, the front accommodating chamber A and the rear accommodating chamber B are switched by rotating 160° clockwise for the first time and rotating 160° counterclockwise for the second time or rotating 200° clockwise.

[0110] Preferably, a partition plate 73 is provided between the two side holes 71 in the rotating core 7, and the partition plate 73 abuts against the connecting rod 54 along the axial direction. Figure 14 , 16 and Figure 21 As shown, the end surface J of the partition plate 73 and the surface E on the connecting rod 54 of the conversion core 5 are in axial contact with each other. The connecting groove 72 and the connecting rod 54 are respectively located on both sides of the partition plate 73. Figure 14 、 Figure 16 、 Figure 17 and Figure 19As shown, after the conversion core 5 and the rotating core 7 are assembled, at one end in the axial direction, the end surface of the cylindrical end plate 513 on the side rod 55 of the conversion core 5 and the end surface L of the partition plate 73 of the rotating core 7 are coplanar. Of course, in other embodiments, the connecting groove 72, the connecting rod 54 and the partition plate 73 can also be arranged in sequence along the axial direction. Figure 14 The orientation shown is that the connecting rod 54 and the partition plate 73 in the figure are swapped left and right. At this time, the conversion core 5 is inserted into the rotating core 7 from left to right until the connecting rod 54 rests on the partition plate 73, completing the assembly of the conversion core 5 on the rotating core 7.

[0111] In this embodiment, the two accommodating cavities 51 are located within the single structure of the conversion core 5 to facilitate assembly. Once the conversion core 5 is assembled, both accommodating cavities 51 are also assembled simultaneously. Furthermore, the connecting rod 54 axially abuts against the partition plate 73, facilitating the installation and positioning of the conversion core 5 on the rotating core 7. Of course, in other embodiments, the conversion core 5 can also be integrally provided with the rotating core 7, eliminating the need for separate accommodating cavities 51. The integrally provided conversion core 5 and rotating core 7 can thus form part of the converter.

[0112] Furthermore, the conversion device further includes a connecting member 8, which is used to transfer the tissue sample in the inner knife tube 13 to the front accommodating chamber A, and to transfer the tissue sample in the rear accommodating chamber B to the collecting device 3. Figures 5 to 8 As shown, the connecting member 8 and the rotating shaft plate 6 are respectively located on both sides of the rotating core 7 in the axial direction.

[0113] like Figure 7 As shown, the connector 8 includes a front connecting tube 81, a rear connecting tube 82, and a mounting plate 83. One end of the front connecting tube 81 connects to the outlet of the inner blade tube 13, and the other end is used to connect to the front accommodating chamber A. One end of the rear connecting tube 82 connects to the rear accommodating chamber B, and the other end is used to connect to the collection device 3. The conversion rotation drive device drives the converter to rotate, causing the two accommodating chambers 51 to alternately connect to the front connecting tube 81 and the rear connecting tube 82. By adding the connector 8 to connect between the inner blade tube 13, the conversion core 5, and the collection device 3, the flexibility of the positioning of the inner blade tube 13, the conversion core 5, and the collection device 3 can be increased.

[0114] Furthermore, if Figure 7 As shown, the connecting member 8 further includes a mounting plate 83. The end surface of the mounting plate 83 close to the rotating core 7 is a flat mounting surface 831 perpendicular to the axial direction. Figure 11 As shown, the end surface P of the rotating core 7 close to the mounting plate 83 and the end surface G of the conversion core 5 close to the mounting plate 83 form a mating surface perpendicular to the axial direction, as shown in FIG. Figure 8 As shown, the mounting surface 831 and the mating surface are in contact with each other along the axial direction. Figure 34In the third embodiment, the end surface of the mounting plate 83 close to the rotating core 7 is a non-planar structure, and the mating surface formed by the end surface P of the rotating core 7 close to the mounting plate 83 and the end surface G of the conversion core 5 close to the mounting plate 83 is also a non-planar structure. As long as it is ensured that the mounting surface 831 and the mating surface can fit and abut, and during the rotation process, it is ensured that no major obstruction is generated and they can always fit and abut, for ease of processing, the mating surface and the mounting surface 831 can be symmetrical along the center line. For example, one of the two is a convex spherical surface and the other is a concave spherical surface, and the two spherical surfaces fit together. Other surface shapes can also be ellipsoidal surfaces or conical surfaces.

[0115] like Figure 8 As shown, a first through hole 832 and a second through hole 833 are provided on the mounting plate 83. One end of the front connecting tube 81 is connected to the outlet of the inner blade tube 13, and the other end is connected to the first through hole 832, so as to connect to the front accommodating chamber A through the first through hole 832. One end of the rear connecting tube 82 is connected to the second through hole 833, and the other end is connected to the feed channel 31, so as to connect to the rear accommodating chamber B through the second through hole 833. The conversion rotation drive device drives the converter to rotate, so that the barrel material openings 511 of the two accommodating chambers 51 alternately connect with the first through hole 832 and the second through hole 833. An end face of the end of the front connecting tube 81, an end face of the end of the rear connecting tube 82, and a side face of the mounting plate 83 are arranged coplanar. Preferably, the front connecting tube 81 and the rear connecting tube 82 are rubber tubes, and the mounting plate 83 can also be a rubber plate.

[0116] In this embodiment, the installation of the mounting plate 83 allows the barrel opening 511 of the converter core 5 to be sealed by the mounting surface 831 when the converter core 5 rotates to a position where it is misaligned with both the first through-hole 832 and the second through-hole 833. Furthermore, the mounting plate 83 and the converter core 5 are in close contact with each other, preventing the connector 8 from interfering with the converter's rotation. Of course, in other embodiments, if the mounting plate 83 is not provided, a valve structure can be provided on the connecting tube and the accommodating chamber to seal the connecting tube and the accommodating chamber when ventilation is not required.

[0117] Furthermore, if Figures 6 to 8 As shown, the converter further includes a converter housing 9 and a converter cap 91. The converter housing 9 and the converter cap 91 are sequentially arranged along the axial direction and fixedly connected. Specifically, the external thread of the converter housing 9 and the internal thread of the converter cap 91 are threadedly connected, and the threaded connection provides a pressing force.

[0118] A mounting cavity 92 is formed between the converter housing 9 and the converter cap 91. The accommodating cavity 51 and the mounting plate 83 are located within the mounting cavity 92. Specifically, the converter core 5, the rotating core 7, and the cover structure 61 are located within the mounting cavity 92. The converter housing 9 and the converter cap 91 axially press the mounting plate 83 into the accommodating cavity 51. The rotating shaft plate 6 is connected to the conversion and rotation drive device via a through-hole in the converter housing 9. The front connecting tube 81 and the rear connecting tube 82 extend out of the mounting cavity 92 through a through-hole in the converter cap 91. Furthermore, the converter housing 9 and the rotating shaft plate 6 can be fixedly connected, allowing the converter housing 9, the converter cap 91, and the rotating shaft plate 6 to rotate synchronously.

[0119] Through the pressing force of the converter housing 9 and the converter cap 91, the fit between the conversion core 5, the rotating core 7 and the mounting plate 83 can be ensured, and the front connecting tube 81 connected to the barrel material port 511 and the rear connecting tube 82 connected to the other barrel material port 511 can remain sealed during rotation.

[0120] Furthermore, if Figure 2 As shown, the collection device 3 is located at the front end of the housing 2. The collection device 3 is placed outside the housing 2 to facilitate real-time observation of the tissue sample collected by the collection device 3. Preferably, the collection device 3 has a certain degree of transparency and is visible from the outside, facilitating direct observation of the amount of tissue sample collected in the collection device 3. The color of the collection device 3 can be set as needed.

[0121] In addition, before the operation, the doctor will use a sterile protective cover 10 to cover the non-sterile housing 2 and the cable 14 extending from the housing 2 to ensure that the operation is performed under sterile conditions. At this time, the collection device 3 is exposed outside the sterile protective cover 10, allowing for observation and removal of samples at any time. This satisfies the requirement that even during the operation, even if the sterile protective cover 10 is used, each cut sample can still be observed and removed at any time.

[0122] Furthermore, if Figure 2 As shown, part of the wall surface of the front end face of the shell 2 is recessed backward to form a recessed surface 21, and the collecting device 3 is arranged in the recessed surface 21. Among them, the rear connecting tube 82 is connected to the feed pipe 38 through the conveying tube 11. In addition, the inner knife tube 13 and the conveying tube 11 are both located inside the shell 2. Among them, the inner knife tube 13 and the conveying tube 11 must be straight tube structures, because the tissue hardness is high and they will get stuck in the curved tube. In addition, the straight tube limits the position of the collecting device 3, which is placed on the side of the shell 2. Considering that the doctor holds it with his right hand, the collecting device 3 is designed to be arranged on the left side of the shell 2 for easy observation. Of course, in other embodiments, the collecting device 3 can be designed to be placed below or on the right side of the shell 2.

[0123] Furthermore, a collecting chamber is provided in the collecting device 3 to prevent the sample from falling out of the collecting device 3. A filter plate 331 is provided in the collecting chamber, and the space on one side of the filter plate 331 in the collecting chamber constitutes a material receiving space 34. The material receiving space 34 and the feeding channel 31 are located on the same side of the filter plate 331, and the air suction channel 32 is located on the other side of the filter plate 331. Figure 26 As shown, the receiving space 34 and the feeding channel 31 are located above the filter plate 331, and the suction channel 32 is located below the filter plate 331. After the tissue sample in the inner blade tube 13 flows out through the conversion device, it enters the receiving space 34 through the feeding channel 31. The tissue is specifically stored and sealed in the receiving space 34. The filter plate 331 blocks the tissue from entering the other side of the filter plate 331.

[0124] like Figure 26 As shown, the filter plate 331 is provided with air holes 332. Optionally, the air holes 332 are circular holes with a diameter of 1±0.3 mm, and the air holes 332 are spaced 0.5±0.3 mm apart. The air holes 332 are evenly distributed throughout the filter plate 331, so that the filter plate 331 is covered with fine holes. The gas in the inner blade tube 13 can enter the material receiving space 34 through the conversion device and the feed channel 31 in sequence, and then enter the vacuum tube 1 through the air holes 332 and the suction channel 32 in sequence.

[0125] In this embodiment, after the inner knife tube 13 takes a sample, with respect to the movement of the gas, under the action of the negative pressure of the vacuum tube 1, the gas passes through the inner knife tube 13 and the conversion device in sequence into the feed channel 31, and then flows through the receiving space 34 and the air holes 332 on the filter plate 331 to the suction channel 32, and then enters the vacuum tube 1; with respect to the movement of the sample, the tissue sample in the inner knife tube 13 enters the feed channel 31 through the conversion device and falls into the receiving space 34. Through the filtering and blocking effect of the filter plate 331, the tissue sample will not cross the filter plate 331 and enter the vacuum tube 1, which can effectively prevent the sample from entering the vacuum tube 1 and prevent the sample from clogging the vacuum tube 1, so that the operation can be carried out continuously.

[0126] Furthermore, if Figures 22 to 24 As shown, the collection device 3 includes a collection outer shell 310 and a collection inner shell 33. The collection inner shell 33 is arranged in the collection outer shell 310. Preferably, the collection inner shell 33 is detachably arranged in the collection outer shell 310 to facilitate replacement of the collection inner shell 33 or convenient removal of samples from the collection inner shell 33. Specifically, during use, the collection inner shell 33 will be removed and replaced after it is full of collection, and the removed collection inner shell 33 containing tissue can be sent for pathological examination.

[0127] Part of the plate surface of the collecting inner shell 33 is a filter plate 331, and a filter cavity 37 is formed in the space between the collecting inner shell 33 and the collecting outer shell 310 on the other side of the filter plate 331. The filter cavity 37 allows the gas to flow out of the suction channel 32 smoothly, ensuring the smooth transmission of negative pressure.

[0128] Preferably, the filter plate 331 is disposed at the bottom of the material receiving space 34. Accordingly, in this embodiment, since the filter plate 331 is the plate surface of the collection inner shell 33, the filter plate 331 is specifically disposed on the bottom plate of the collection inner shell 33. At this time, the material receiving space 34 is located above the filter cavity 37. Gravity can be used to allow some unnecessary substances in the material receiving space 34 to enter the filter cavity 37 through the air vents 332. Such unnecessary substances, such as blood, can be passed through the air vents 332. Optionally, the height of the filter cavity 37 ranges from 2 to 3 mm to maintain a compact structure, with a lower limit of 2 mm to ensure smooth negative pressure. Preferably, the bottom of the suction channel 32 is aligned with the bottom of the collection outer shell 310.

[0129] Of course, in other embodiments, the material receiving space 34 and the filter cavity 37 may also be arranged side by side in the horizontal direction.

[0130] In this embodiment, the material collection space 34 is provided in the collection inner shell 33. The doctor can directly remove the collection inner shell 33 to obtain the tissue samples collected therein, which is convenient for the doctor's operation and also facilitates the doctor's judgment on the operation progress and the condition of the disease.

[0131] Furthermore, if Figures 24 to 26 As shown, the collection device 3 includes a collection device cover 35 and a collection device body 36 with an opening on one side. The collection device cover 35 is removably sealed to the opening of the collection device body 36. The space between the collection device cover 35 and the collection device body 36 constitutes a collection chamber. In this embodiment, the collection device outer shell 310 and the collection inner shell 33 are components of the collection device body 36. Both the collection device outer shell 310 and the collection inner shell 33 have openings to form the opening of the collection device body 36. Preferably, the top of the collection device body 36 is provided with an opening.

[0132] Optionally, the opening of the collecting device body 36 is provided with a slot 333, and the collecting device cover 35 is slidably engaged with the slot 333. The detachable connection between the collecting device cover 35 and the collecting device body 36 facilitates sampling.

[0133] Among them, for the setting of the collecting device cover 35, in the direction perpendicular to the sliding direction of the collecting device cover 35, that is, Figure 28 In the left and right directions, the two ends of the collecting device cover 35 are respectively provided with a slide groove 351, and the two slide grooves 351 are respectively slidably engaged with the slideway 334 of the collecting inner shell 33, along the sliding direction of the collecting device cover 35 (i.e. Figure 26By pulling the collecting device cover 35 in the left and right directions, the collecting device cover 35 can be opened to facilitate taking out the sample.

[0134] For the shape of the collecting device 3, refer to Figure 24 , which is configured in a flat shape. Specifically, the length of the collecting device 3 (i.e., the sliding direction of the collecting device cover 35) is greater than the thickness of the collecting device 3 (perpendicular to the sliding direction of the collecting device cover 35 and the depth direction of the collecting device 3). The feeding channel 31 and the suction channel 32 are both located at one end of the collecting device 3 in the length direction, which facilitates the collection of tissues and the reasonable setting of the size of the collecting device 3, which is conducive to achieving a compact product layout. Of course, in other embodiments, the collecting device 3 can also be configured as a cube or other shapes.

[0135] Furthermore, if Figure 24 As shown, a feed pipe 38 and an air pipe 39 are protruding from the outer surface of the collection device 3. Specifically, the feed pipe 38 and the air pipe 39 are protruding from the outer surface of the collection device body 36. The feed pipe 38 and the air pipe 39 are mounted on the outer shell 2 and can be specifically plugged into each other. Furthermore, the connection between the collection device body 36 and the outer shell 2 can be strengthened by gluing or snap-fitting.

[0136] Among them, the feed channel 31 includes a feed pipe 38, and the air intake channel 32 includes an air pipe 39, that is, the feed pipe 38 is a component of the feed channel 31, and the air pipe 39 is a component of the air intake channel 32. Specifically, since the collecting device 3 in this embodiment includes a collecting outer shell 310 and a collecting inner shell 33 built into the collecting outer shell 310, at this time, the feed channel 31 is a structure that simultaneously passes through the collecting inner shell 33 and the collecting outer shell 310, and the part that passes through the collecting outer shell 310 includes the feed pipe 38, so as to realize the communication between the internal space of the collecting inner shell 33 and the outside world through the feed channel 31, while the air intake channel 32 is a structure that only passes through the collecting outer shell 310, and the part that passes through the collecting outer shell 310 includes the air pipe 39, so as to realize the communication between the collecting inner shell 33 and the collecting outer shell 310 and the outside world through the air intake channel 32.

[0137] The biopsy collection system in this embodiment can be applied to a breast rotary excision biopsy collection system, and also includes a blade tip 121, a cutting groove 122, an outer blade tube 12, an outer blade tube seat 123, an inner blade inlay, a transmission nut 125, an input gear, an inner blade power output gear, an inner blade power output motor and other structures.

[0138] When in use, the operation process is as follows: the blade tip 121 pierces the skin and reaches the tissue, the tissue is pressed into the cutting groove 122, and the inner blade tube 13 cuts the tissue under the drive of the inner blade power output motor 132. The cut tissue is sucked into the front accommodating chamber A aligned with the inner blade tube 13 through the inner blade tube 13 due to the negative pressure. Then the converter rotates 180° under the drive of the converter power output motor 4, and the original front accommodating chamber A switches to the rear accommodating chamber B, which is now aligned with the delivery tube 11. The tissue is sucked into the collection device 3 through the delivery tube 11, making the tissue visible and accessible. At the same time, the original front accommodating chamber B is aligned with the inner blade tube 13 to prepare to receive the tissue. The two accommodating chambers 51 alternately receive tissue and work in a cycle.

[0139] The tissue reaches the collecting space 34 of the collecting inner shell 33 through the conveying tube 11 and the feeding channel 31, and other blood, water and gas are discharged from the collecting inner shell 33 through the air holes 332 on the filter plate 331 and reach the waste liquid bucket through the vacuum tube 1.

[0140] When taking a sample, the collecting device cover 35 is flipped by hand to remove the collecting inner shell 33 from the collecting outer shell 310. The collecting device cover 35 is pulled out from the collecting inner shell 33, and then tweezers are inserted into the collecting inner shell 33 to pick up the sample.

[0141] In the biopsy collection system of this embodiment, the collection device 3 is placed in front, and a converter is connected between the collection device 3 and the inner blade tube 13. When the vacuum pump is working, a vacuum is created in the collection device 3, and the negative pressure is transmitted to the inner blade tube 13 through the converter, sucking the cut tissue into the converter. Subsequently, the converter rotates, and the tissue storage cavity 51 originally connected to the inner blade tube 13 is connected to the collection device through rotation, and the tissue is transported to the collection device 3. This system can achieve continuous cutting of large sample volumes under sterile protection. When the collection device 3 has a certain degree of transparency, the cut tissue is easy to observe, which can simplify the doctor's operation, shorten the operation time so that the doctor can focus more on the operation itself, and avoid the problem of the existing post-collection device being difficult to replace after it is full.

[0142] In addition to the above-mentioned biopsy collection system, the present invention also provides a biopsy collection method, which uses the above-mentioned biopsy collection system. Specifically, the method includes the following steps:

[0143] S1: Controls the negative pressure device connected to the vacuum tube to start and provide negative pressure to the vacuum tube.

[0144] S2: Control the conversion rotation drive device to start once every set time interval, so that the two accommodating chambers 51 serve as the front accommodating chamber A and the rear accommodating chamber B alternately.

[0145] The cut tissue sample enters the front accommodating chamber A through the inner knife tube 13 under the action of negative pressure, and the tissue sample in the rear accommodating chamber B enters the collecting device 3 under the action of negative pressure.

[0146] In this embodiment, the operation of the rotation drive device is switched by timing control, thereby improving work efficiency.

[0147] The starting time for setting the set duration can be referenced to the movement of the inner blade tube 13: the inner blade tube 13 moves toward the blade tip 121 of the outer blade tube 12 and cuts. After the tissue is cut, the controller controls the inner blade tube 13 to begin retreating. Due to the negative pressure within the inner blade tube 13, the tissue is drawn into the inner blade tube 13 and transported to the front accommodating chamber A. The controller starts counting from the time the inner blade tube 13 begins retreating (this can be done by sending a retreat command signal, or by using a motion sensor capable of monitoring the movement of the inner blade tube 13, with the actual start of the inner blade tube 13's retreat detected by the motion sensor). After the set duration has elapsed, the controller controls the drive device to rotate the converter. During this set duration, the converter remains in a stationary state relative to the inner blade tube 13, meaning that the front accommodating chamber A is currently waiting for the inner blade tube 13 to transfer the sample. This stationary time is required to ensure that the tissue is transported to the front accommodating chamber A. Preferably, this time is 1.5-3 seconds.

[0148] It should be noted that when an element is referred to as being "fixed" to another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected" to another element, it may be directly connected to the other element or there may be an intermediate element. In addition, in the description of the present invention, unless otherwise specified, "plurality," "plurality," and "plurality of groups" mean two or more.

[0149] Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate and simplify the description of the present invention and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features referred to.

[0150] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0151] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0152] The biopsy collection system and method provided by the present invention are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above examples is intended only to facilitate understanding of the method and core concepts of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A biopsy collection system, characterized in that: comprising a needle and a tissue sample holder assembly, wherein the needle is configured to collect a tissue sample and deliver the tissue sample to the tissue sample holder assembly; The tissue sample holder assembly comprises an outer shell (2), an inner knife tube (13), a conversion device, a collection device (3) and a vacuum tube (1), wherein the needle is arranged on the inner knife tube (13); The conversion device comprises a converter and a conversion rotation drive device, the converter is connected to the output shaft of the conversion rotation drive device, the converter comprises two accommodating chambers (51), and the two accommodating chambers (51) are connected through an air passage (53); the conversion rotation drive device drives the converter to rotate, so that the two accommodating chambers (51) alternately serve as the front accommodating chamber (A) and the rear accommodating chamber (B); The gas in the inner knife tube (13) can enter the collecting device (3) through the front accommodating chamber (A), the air channel (53), and the rear accommodating chamber (B) in sequence; The tissue sample in the inner knife tube (13) can enter the front accommodating chamber (A) for temporary storage. After the front accommodating chamber (A) is rotated into the rear accommodating chamber (B), the temporarily stored tissue sample flows to the collecting device (3) through the rear accommodating chamber (B).

2. The biopsy collection system according to claim 1, wherein: The converter comprises a rotating core (7) and a cover structure (61); a connecting groove (72) is provided at one end of the rotating core (7) close to the cover structure (61); two side holes (71) extending in the axial direction are provided on the rotating core (7); one end of the two side holes (71) in the axial direction is connected through the connecting groove (72), and the other end is provided with an opening to connect with the external space of the rotating core (7); the cover structure (61) covers the notch of the connecting groove (72) so that the connecting groove (72) after covering forms the airway (53); and one of the accommodating chambers (51) is provided in each of the side holes (71).

3. The biopsy collection system according to claim 2, wherein: The converter comprises a rotating shaft plate (6); the rotating shaft plate (6) comprises a connecting portion and the sealing structure (61); the connecting portion is fixedly connected to the sealing structure (61); the sealing structure (61) is provided with a recessed structure (611); the rotating core (7) is axially inserted into the recessed structure (611); the rotating shaft plate (6) is connected to the conversion rotation drive device via the connecting portion, and drives the rotating core (7) to rotate synchronously via the recessed structure (611).

4. The biopsy collection system according to claim 1, wherein: A cylinder end plate (513) is provided on the accommodating cavity (51), a cylinder air hole (512) is provided on the cylinder end plate (513), and the accommodating cavity (51) is ventilated with the air passage (53) through the cylinder air hole (512); After the tissue sample enters the front accommodating chamber (A), it moves in the front accommodating chamber (A) at most until it abuts against the barrel end plate (513) of the front accommodating chamber (A).

5. The biopsy collection system according to claim 2, wherein: The converter further comprises a conversion core (5); the conversion core (5) comprises a U-shaped structure consisting of two side rods (55) and a connecting rod (54) connected between the two side rods (55); each side rod (55) is provided with an accommodating cavity (51), and the two side rods (55) are respectively inserted into the two side holes (71).

6. The biopsy collection system according to claim 1, wherein: The conversion device further comprises a connecting member (8) for transferring the tissue sample of the inner knife tube (13) to the front accommodating chamber (A), and for transferring the tissue sample of the rear accommodating chamber (B) to the collecting device (3), wherein the connecting member (8) comprises a front connecting tube (81) and a rear connecting tube (82); one end of the front connecting tube (81) is connected to the outlet of the inner knife tube (13), and the other end is used to connect to the front accommodating chamber (A); one end of the rear connecting tube (82) is used to connect to the rear accommodating chamber (B), and the other end is connected to the collecting device (3); the conversion rotation drive device drives the converter to rotate, so that the two accommodating chambers (51) are alternately connected to the front connecting tube (81) and the rear connecting tube (82).

7. The biopsy collection system according to claim 6, wherein: The connecting member (8) further comprises a mounting plate (83); a first through hole (832) and a second through hole (833) are provided on the mounting plate (83); one pipe end of the front connecting pipe (81) is connected to the outlet of the inner knife tube (13), and the other pipe end is connected to the first through hole (832), so as to be connected to the front accommodating chamber (A) through the first through hole (832); one pipe end of the rear connecting pipe (82) is connected to the second through hole (833), so as to be connected to the rear accommodating chamber (B) through the second through hole (833), and the other pipe end is connected to the collecting device (3); an end face of an end of the front connecting pipe (81), an end face of an end of the rear connecting pipe (82), and a side face of the mounting plate (83) are coplanar; The conversion rotation drive device drives the converter to rotate, so that the two accommodating cavities (51) alternately dock with the first through hole (832) and the second through hole (833).

8. The biopsy collection system according to claim 7, wherein: The converter further comprises a converter housing (9) and a converter cap (91); the converter housing (9) and the converter cap (91) are sequentially arranged and fixedly connected along the axial direction, and a mounting cavity (92) is formed between the two, the accommodating cavity (51) and the mounting plate (83) are built into the mounting cavity (92), the converter housing (9) and the converter cap (91) axially press the mounting plate (83) against the accommodating cavity (51), and the front connecting tube (81) and the rear connecting tube (82) extend out of the mounting cavity (92) through the through hole on the converter cap (91).

9. The biopsy collection system according to claim 1, wherein: The collecting device (3) is disposed outside the housing (2), and the collecting device (3) is located at the front end of the housing (2).

10. The biopsy collection system according to claim 9, wherein: Part of the wall surface of the front end surface of the housing (2) is recessed backward to form a recessed surface (21), and the collecting device (3) is arranged in the recessed surface (21).

11. The biopsy collection system according to any one of claims 1 to 10, wherein: The outlet of the inner knife tube (13) is connected to the feed channel (31) of the collecting device (3) through the conversion device, and the suction channel (32) of the collecting device (3) is connected to a port of the vacuum tube (1); a collecting chamber is provided in the collecting device (3), a filter plate (331) is provided in the collecting chamber, and the space on one side of the filter plate (331) in the collecting chamber constitutes a receiving space (34), and the receiving space (34) and the feed channel (31) are located on the filter plate (331). On the same side of the filter plate (331), the suction channel (32) is located on the other side of the filter plate (331), so that the tissue entering the collection chamber through the feed channel (31) can be accommodated in the receiving space (34); an air vent (332) is provided on the filter plate (331), and the gas in the inner knife tube (13) can enter the receiving space (34) through the conversion device and the feed channel (31) in sequence, and then enter the vacuum tube (1) through the air vent (332) and the suction channel (32) in sequence.

12. The biopsy collection system of claim 11, wherein: The collecting device (3) comprises a collecting outer shell (310) and a collecting inner shell (33), wherein the collecting inner shell (33) is arranged in the collecting outer shell (310), a part of the plate surface of the collecting inner shell (33) is set as the filter plate (331), the space between the collecting inner shell (33) and the collecting outer shell (310) forms a filter cavity (37), and the material receiving space (34) is arranged in the collecting inner shell (33); the air suction channel (32) is arranged on the collecting outer shell (310) to connect the filter cavity (37) with the vacuum tube (1), and the material feeding channel (31) is arranged on the collecting inner shell (33) and the collecting outer shell (310) to connect the material receiving space (34) with the inner knife tube (13).

13. The biopsy collection system of claim 11, wherein: The filter plate (331) is arranged at the bottom of the material receiving space (34).

14. The biopsy collection system according to any one of claims 1 to 10, wherein: The collecting device (3) comprises a collecting device cover (35) and a collecting device body (36) with an opening on one side, and the collecting device cover (35) is detachably sealed to the opening of the collecting device body (36).

15. The biopsy collection system according to any one of claims 1 to 10, wherein: The outlet of the inner knife tube (13) is connected to the feed channel (31) of the collecting device (3) through the conversion device, and the suction channel (32) of the collecting device (3) is connected to a port of the vacuum tube (1); A feed pipe (38) and an air pipe (39) are protrudingly provided on the outer surface of the collecting device (3); the feed pipe (38) and the air pipe (39) are provided on the outer shell (2); the feed channel (31) includes the feed pipe (38); and the air suction channel (32) includes the air pipe (39).

16. A biopsy collection method, characterized in that: Using the biopsy collection system according to any one of claims 1 to 15, the method comprises: Controlling the negative pressure device connected to the vacuum tube to start, and providing negative pressure to the vacuum tube; Controlling the conversion rotation drive device to start once at intervals of a set time length, so that the two accommodating chambers (51) alternately serve as the front accommodating chamber (A) and the rear accommodating chamber (B); The cut tissue sample enters the front accommodating chamber (A) through the inner knife tube (13) under the action of the negative pressure, and the tissue sample in the rear accommodating chamber (B) enters the collecting device (3) under the action of the negative pressure.

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