Handheld biopsy tissue rotary cutting device

Abstract

The utility model relates to a handheld biopsy tissue rotary cutting device. A tissue containing assembly is arranged at the end, away from a rotary cutting assembly, of a rotary cutting main machine body. A negative pressure suction assembly is arranged in the rotary cutting main machine body, the piston head is movably arranged in the piston barrel, the piston rod is connected to the piston head, and the piston barrel and the rotary cutting knife are both communicated with the tissue storage assembly. By means of the built-in negative pressure suction assembly which does not need electric drive, suction of rotary cut biopsy tissue can be achieved, extra electric drive is not needed, the cruising ability of the rotary cut main machine body is greatly improved, the piston rod is operated to drive the piston head to move upwards in the piston barrel to generate negative pressure, and therefore the rotary cut biopsy tissue can be sucked. Biopsy tissue cut by the rotary cutting assembly enters the tissue storage assembly through the rotary cutter to be stored, after rotary cutting is finished, the tissue storage assembly can be detached to take out the biopsy tissue, traditional external suction equipment is replaced, the production cost is greatly reduced, the equipment size is reduced, more flexibility is achieved, and the operation difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a handheld biopsy tissue rotary cutting device. Background Art

[0002] Breast biopsy is short for breast biopsy pathological examination, which refers to a method of determining the diagnosis by using surgical methods such as local resection, forceps extraction, puncture needle aspiration, scratching, and removal to obtain diseased tissues from the patient's living body for pathological examination. Existing breast biopsies generally obtain cell or tissue samples by needle puncture. In addition, the biopsy needle can be directly inserted into a palpable mass, or when the mass cannot be palpated, it can be guided into the breast through breast imaging techniques. During breast biopsy, mammography, ultrasound, stereotactic, and MRI can be used. Based on core needle biopsy, vacuum-assisted breast biopsy systems have been widely used in clinical practice. However, most of these biopsy systems currently require an external suction device through a pipeline, which is not flexible enough during the operation process and the cost of the suction device is relatively high. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a handheld biopsy tissue rotary cutting device to overcome the above deficiencies in the prior art.

[0004] The technical solution of the utility model to solve the above technical problems is as follows: A handheld biopsy tissue rotary cutting device includes a rotary cutting main body, and a tissue storage component is arranged at one end of the rotary cutting main body away from the rotary cutting component;

[0005] The rotary cutting component includes a rotary cutting knife and a window tube. The rear end of the window tube is connected to the front end of the rotary cutting main body, and the rotary cutting knife is arranged inside the window tube;

[0006] A negative pressure suction component is arranged inside the rotary cutting main body. The negative pressure suction component includes a piston cylinder, a piston rod, and a piston head. The piston head is movably arranged inside the piston cylinder, the piston rod is connected to the piston head, the upper end of the piston rod extends out of the rotary cutting main body, and both the piston cylinder and the rotary cutting knife are respectively communicated with the tissue storage component.

[0007] The beneficial effects of the utility model are: By integrating a negative pressure suction component that does not require electric drive, the suction of the rotary cut biopsy tissue can be achieved without additional electric drive, greatly improving the battery life of the rotary cutting main body. By operating the piston rod to drive the piston head to move upward inside the piston cylinder to generate negative pressure, the biopsy tissue cut by the rotary cutting component enters the tissue storage component through the rotary cutting knife for storage. After the rotary cutting is completed, the tissue storage component can be removed to take out the biopsy tissue, replacing the traditional external suction device, greatly reducing the production cost, reducing the volume of the device, making it more flexible, and reducing the operation difficulty.

[0008] On the basis of the above technical solutions, the present utility model can also be improved as follows.

[0009] Further, the tissue storage component includes a storage box and a drawer. The drawer is slidably disposed within the storage box. One end of the rotary cutter passes through the storage box and extends into the drawer. A sealing is provided between the rotary cutter and the storage box. The piston cylinder communicates with the storage box. A plurality of air holes are provided on the drawer. The storage box communicates with the drawer through the air holes. The diameter of the air holes is smaller than the diameter of the cut tissue.

[0010] Further, a knob is provided at the tail end of the drawer. The drawer is detachably connected to the tail end of the rotary cutting main body through the knob.

[0011] Further, the negative pressure suction component further includes a sliding button and a connecting rod. One end of the connecting rod is rotatably connected to the upper end of the piston rod, and the other end of the connecting rod is rotatably connected to the sliding button. The sliding button is slidably connected to the upper end surface of the housing of the rotary cutting main body.

[0012] Further, a slide rail is provided on the upper end surface of the housing of the rotary cutting main body. Grooves adapted to the slide rail are provided on both sides of the sliding button, and the grooves slide along the slide rail.

[0013] Further, a rotary cutting drive component is provided within the rotary cutting main body. The rotary cutting drive component includes a motor and a driven shaft. The rotating shaft of the motor is connected to an input gear. The driven shaft is arranged parallel to the rotating shaft of the motor. A first driven gear and a second driven gear are respectively provided at both ends of the driven shaft. The first driven gear meshes with the input gear. The second driven gear meshes with an output gear. A third driven gear is provided on the rotary cutter, and the third driven gear meshes with the output gear.

[0014] Further, a linear drive component is also provided within the rotary cutting main body. The linear drive component includes a fixed seat, a limit pin and a rotating shaft tube. The fixed seat is fixedly provided within the rotary cutting main body. One end of the rotating shaft tube extends into the fixed seat. A spiral guide groove is provided on the peripheral wall of the end of the rotating shaft tube located within the fixed seat. One end of the limit pin is limitedly arranged relative to the inner wall of the fixed seat, and the other end of the limit pin is located within the spiral guide groove. The third driven gear is provided on the rotating shaft tube, and the rotating shaft tube is driven to rotate by the rotary cutting drive component. The rear end of the rotary cutter is fixedly connected and passes through the interior of the rotating shaft tube.

[0015] Further, the linear drive component further includes a limit sleeve and a spring. The limit sleeve moves linearly within the fixed seat. One end of the rotating shaft tube located in the spiral guide groove extends into the limit sleeve, and the other end of the limit pin penetrates through the inner wall of the limit sleeve and extends into the spiral guide groove. Retaining rings are respectively fixedly provided at both ends of the fixed seat, and springs are provided between both ends of the limit sleeve and the retaining rings.

[0016] Further, a limit channel is provided along the length direction within the fixed seat, and one end of the limit pin is slidably arranged within the limit channel. Description of the Drawings

[0017] Figure 1 is a structural schematic diagram of the present utility model;

[0018] Figure 2 is an internal structural schematic diagram of the present utility model;

[0019] Figure 3 is a partial sectional structural schematic diagram of the present utility model;

[0020] Figure 4 is the present utility model Figure 3 an enlarged view of the structure at A in;

[0021] Figure 5 is a partial sectional structural schematic of the tissue storage assembly of the present utility model Figure 1 ;

[0022] Figure 6 is a partial sectional structural schematic of the tissue storage assembly of the present utility model Figure 2 ;

[0023] Figure 7 is a partial sectional structural schematic diagram of the linear drive assembly of the present utility model;

[0024] Figure 8 is a structural schematic diagram of the rotary shaft tube of the present utility model;

[0025] Figure 9 is a sectional structural schematic diagram of the cooperation between the sliding button and the sliding rail of the present utility model.

[0026] In the drawings, the list of components represented by each reference numeral is as follows:

[0027] 1. Rotary cutting assembly; 11. Rotary cutting knife; 12. Window tube; 2. Tissue storage assembly; 21. Storage box; 22. Drawer; 221. Air hole; 23. Knob; 3. Negative pressure suction assembly; 31. Piston barrel; 32. Piston rod; 33. Piston head; 34. Sliding button; 341. Notch; 35. Link; 36. Sliding rail; 4. Rotary cutting drive assembly; 41. Motor; 42. Driven shaft; 43. Input gear; 44. First driven gear; 45. Second driven gear; 46. Output gear; 47. Third driven gear; 5. Linear drive assembly; 51. Fixed seat; 511. Limit channel; 52. Limit pin; 53. Rotary shaft tube; 531. Spiral guide groove; 54. Limit sleeve; 55. Spring; 56. Retaining ring. Specific embodiments

[0028] The principles and features of the present utility model will be described below with reference to the drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0029] Embodiment 1, as Figures 1 to 9 As shown, a handheld biopsy tissue peeling device comprises a peeling main body, and a tissue receiving component 2 is provided at one end of the peeling main body away from the peeling component 1;

[0030] The peeling assembly 1 comprises a peeling knife 11 and a window tube 12. The rear end of the window tube 12 is connected to the front end of the peeling host body, and the peeling knife 11 is arranged inside the window tube 12.

[0031] A negative pressure suction assembly 3 is arranged inside the main body of the rotary cutting machine, and the negative pressure suction assembly 3 includes a piston cylinder 31, a piston rod 32 and a piston head 33. The piston head 33 is movably arranged in the piston cylinder 31, the piston rod 32 is connected to the piston head 33, and the upper end of the piston rod 32 extends out of the main body of the rotary cutting machine. The piston cylinder 31 and the rotary cutting knife 11 are respectively connected to the tissue storage assembly 2.

[0032] By means of the built-in negative pressure suction component 3 which does not require electric drive, suction of the peeling biopsy tissue can be achieved without the need for additional electric drive, which greatly improves the endurance of the peeling host body. By operating the piston rod 32, the piston head 33 is driven to move upward in the piston cylinder 31 to generate negative pressure. The biopsy tissue cut by the peeling component 1 passes through the peeling knife 11 and enters the tissue storage component 2 for storage. After the peeling is completed, the tissue storage component 2 can be removed to take out the biopsy tissue, which replaces the traditional external suction equipment, greatly reduces the production cost, reduces the equipment size, is more flexible, and reduces the difficulty of operation.

[0033] Embodiment 2: This embodiment is a further improvement on the basis of embodiment 1, and its details are as follows:

[0034] The tissue storage assembly 2 includes a storage box 21 and a drawer 22. The drawer 22 can be pulled out and arranged in the storage box 21. One end of the rotary cutter 11 passes through the storage box 21 and extends into the drawer 22. The rotary cutter 11 and the storage box 21 are sealed. The piston cylinder 31 is connected to the storage box 21. A plurality of air holes 221 are provided on the drawer 22. The storage box 21 is connected to the drawer 22 through the air holes 221. The diameter of the air holes 221 is smaller than the diameter of the rotary cut tissue.

[0035] When the piston rod 32 is operated to drive the piston head 33 to move upward in the piston cylinder 31 to generate negative pressure, the negative pressure airflow passes through the rotary cutter 11, the drawer 22, the air hole 221 and the storage box 21 in sequence and enters the piston cylinder 31. At the same time, after the biopsy tissue enters the drawer 22 from the rotary cutter 11 with the negative pressure airflow, since the diameter of the air hole 221 is smaller than the diameter of the rotary cut tissue, the biopsy tissue will stay in the drawer 22, thereby completing the suction work; in specific implementation, the piston cylinder 31 is connected to the storage box 21 through a pipeline and a negative pressure joint.

[0036] Embodiment 3, this embodiment is a further improvement on the basis of embodiment 2, and its details are as follows:

[0037] A knob 23 is provided at the rear end of the drawer 22 , and the drawer 22 is detachably connected to the rear end of the rotary cutting host body through the knob 23 .

[0038] In a specific implementation, the knob 23 and the rear end of the rotary cutting main body are detachably connected by means of rotational buckling or threaded fitting. The drawer 22 can be pulled out by first rotating to unlock, which makes installation and disassembly more convenient.

[0039] Embodiment 4: This embodiment is a further improvement on the basis of embodiment 1, and its details are as follows:

[0040] The negative pressure suction assembly also includes a slide button 34 and a connecting rod 35; one end of the connecting rod 35 is rotatably connected to the upper end of the piston rod 32, and the other end of the connecting rod 35 is rotatably connected to the slide button 34, and the slide button 34 is slidably connected to the upper end surface of the shell of the main body of the rotary cutting machine. When sucking the rotary cut tissue, it is only necessary to turn the slide button 34 to drive the piston rod 32 to move upward, thereby forming a negative pressure airflow to suck the rotary cut tissue into the drawer 22, which is simple and quick to operate.

[0041] Embodiment 5, this embodiment is a further improvement on the basis of embodiment 4, and its details are as follows:

[0042] The upper end surface of the shell of the rotary cutting host body is provided with a slide rail 36, and notches 341 matching the slide rail 36 are arranged on both sides of the slide button 34, and the notches 341 slide along the slide rail 36. The slide button 34 can slide stably on the rotary cutting host body without falling off.

[0043] Embodiment 6: This embodiment is a further improvement on the basis of embodiment 1, and its details are as follows:

[0044] A peeling drive assembly 4 is arranged in the body of the peeling main machine; the peeling drive assembly 4 includes a motor 41 and a driven shaft 42, the rotating shaft of the motor 41 is connected to the input gear 43, the driven shaft 42 is arranged parallel to the rotating shaft of the motor 41, and the first driven gear 44 and the second driven gear 45 are respectively arranged at both ends of the driven shaft 42, the first driven gear 44 is meshed with the input gear 43, the second driven gear 45 is meshed with the output gear 46, and the peeling knife 11 is provided with a third driven gear 47, and the third driven gear 47 is meshed with the output gear 46.

[0045] In a specific implementation, a fixed frame is also provided in the main body of the rotary cutting machine, and the motor 41 is fixedly arranged on one side of the fixed frame. The rotating shafts of the driven shaft 42 and the second driven gear 45 are both rotatably connected to the fixed frame, which can avoid gear displacement and misalignment. In addition, a battery is provided in the shell, and a charging interface electrically connected to the battery is provided on the shell, and the battery is used to power the motor 41.

[0046] Example 7 is a further improvement based on Example 6, and the details are as follows:

[0047] A linear drive assembly 5 is further provided inside the rotary cutting main body; the linear drive assembly includes a fixed seat 51, a limit pin 52, and a rotating shaft tube 53; the fixed seat 51 is fixedly arranged inside the rotary cutting main body, one end of the rotating shaft tube 53 extends into the fixed seat 51, a spiral guide groove 531 is arranged on the peripheral wall of the end of the rotating shaft tube 53 located inside the fixed seat 51, one end of the limit pin 52 is limitedly arranged relative to the inner wall of the fixed seat 51, the other end of the limit pin 52 is located inside the spiral guide groove 531, the third driven gear 47 is arranged on the rotating shaft tube 53, and the rotating shaft tube 53 is driven to rotate by the rotary cutting drive assembly 4; the rear end of the rotary cutting knife 11 is fixedly connected and passes through the inside of the rotating shaft tube 53.

[0048] The rotary cutting drive assembly 4 drives the rotating shaft tube 53 to rotate. Under the guiding action of the spiral guide groove 531, the limit pin 52 drives the rotating shaft tube 53 to perform a linear motion simultaneously inside the fixed seat 51. Only one rotary cutting drive assembly 4 is needed to drive the rotating shaft tube 53 to perform a rotary motion and a linear motion simultaneously, and then drive the rotary cutting knife 11 to complete the rotary motion and the linear motion, thereby completing the rotary cutting work. The structure is simple and the cost is low.

[0049] In a specific implementation, a spike portion is arranged at the front end of the window tube 12 to facilitate piercing into the pathological tissue. An opening is arranged on the side wall at the front end of the window tube 12, and a cutting edge is arranged at the front end of the rotary cutting knife 11. During the suction process of the negative pressure suction assembly 3, the pathological tissue is sucked into the window tube 12 from the opening. At this time, the rotary cutting drive assembly 4 and the linear drive assembly 5 drive the drive assembly to perform a rotary motion and a linear motion simultaneously. The pathological tissue sucked into the window tube 12 is subjected to a rotary cutting operation by the cutting edge at the front end of the rotary cutting knife 11. After rotary cutting, the cut pathological tissue is further sucked by the negative pressure suction assembly 3 into the tissue storage assembly 2, thereby completing the rotary cutting operation.

[0050] Example 8 is a further improvement based on Example 7, and the details are as follows:

[0051] The linear drive assembly 5 further includes a limit sleeve 54 and a spring 55; the limit sleeve 54 moves linearly inside the fixed seat 51, one end of the rotating shaft tube 53 located in the spiral guide groove 531 extends into the limit sleeve 54, and the other end of the limit pin 52 penetrates through the inner wall of the limit sleeve 54 and extends into the spiral guide groove 531; retaining rings 56 are respectively fixedly arranged at both ends of the fixed seat 51, and springs 55 are arranged between both ends of the limit sleeve 54 and the retaining rings 56.

[0052] When the pathological tissue is relatively dense, at this time, the movement speed of the limit pin 52 in the spiral guide groove 531 does not match the advancing speed of the rotary cutting knife 11, which will cause the rotary shaft sleeve to be unable to rotate, while the rotary cutting drive assembly 4 is continuously outputting, resulting in the risk of instantaneous overload of the motor 41; by setting a limit sleeve 54 that can move linearly in the fixed seat 51, when encountering relatively dense pathological tissue, the linear movement of the limit sleeve 54 towards the rear end cancels the force of the rotary shaft sleeve advancing forward, avoiding the risk of instantaneous overload of the motor 41; specifically, the linear movement of the limit sleeve 54 in the fixed seat 51 is realized by respectively arranging springs 55 at both ends of the limit sleeve 54. The rotary cutting knife 11 can play a buffering role through the springs 55 in the axial movement, avoiding the risk of instantaneous overload of the motor 41.

[0053] Embodiment 9, this embodiment is a further improvement based on Embodiment 8, and the specific content is as follows:

[0054] A limit channel 511 is arranged along the length direction inside the fixed seat 51, and one end of the limit pin 52 is slidably arranged in the limit channel 511. This avoids the rotational movement of the limit pin 52, that is, realizes the angular limit setting of the limit pin 52 relative to the inner wall of the fixed seat 51, and further avoids the situation that the rotary shaft tube 53 drives the limit sleeve 54 and the limit pin 52 to rotate simultaneously during the rotation process, thus avoiding the hidden danger that the rotary cutting knife 11 cannot be driven to advance forward for rotary cutting.

[0055] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A handheld biopsy tissue rotary cutting device, characterized in that, It includes a rotary cutting main body, and an organization storage component (2) is arranged at one end of the rotary cutting main body far away from the rotary cutting component (1); The rotary cutting component (1) includes a rotary cutting knife (11) and a window tube (12). The rear end of the window tube (12) is connected to the front end of the rotary cutting main body, and the rotary cutting knife (11) is arranged inside the window tube (12); A negative pressure suction component (3) is arranged inside the rotary cutting main body. The negative pressure suction component (3) includes a piston cylinder (31), a piston rod (32) and a piston head (33). The piston head (33) is movably arranged inside the piston cylinder (31), the piston rod (32) is connected to the piston head (33), the upper end of the piston rod (32) extends out of the rotary cutting main body, and both the piston cylinder (31) and the rotary cutting knife (11) are respectively communicated with the organization storage component (2).

2. The hand-held biopsy tissue rotary cutting device according to claim 1, characterized in that, The organization storage component (2) includes a storage box (21) and a drawer (22). The drawer (22) is slidably arranged inside the storage box (21). One end of the rotary cutting knife (11) passes through the storage box (21) and extends into the drawer (22). A sealing is arranged between the rotary cutting knife (11) and the storage box (21). The piston cylinder (31) is communicated with the storage box (21). A number of air holes (221) are arranged on the drawer (22). The storage box (21) is communicated with the drawer (22) through the air holes (221). The diameter of the air holes (221) is smaller than the diameter of the rotary cut tissue.

3. The handheld biopsy tissue rotary cutting device according to claim 2, wherein, A knob (23) is arranged at the tail end of the drawer (22). The drawer (22) is detachably connected to the tail end of the rotary cutting main body through the knob (23).

4. A hand-held biopsy tissue rotary cutting device according to claim 1, characterized in that, The negative pressure suction component further includes a sliding button (34) and a connecting rod (35); one end of the connecting rod (35) is rotatably connected to the upper end of the piston rod (32), the other end of the connecting rod (35) is rotatably connected to the sliding button (34), and the sliding button (34) is slidably connected to the upper end face of the housing of the rotary cutting main body.

5. A hand-held biopsy tissue rotary cutting device according to claim 4, characterized in that, A slide rail (36) is opened on the upper end face of the housing of the rotary cutting main body. Grooves (341) adapted to the slide rail (36) are arranged on both sides of the sliding button (34), and the grooves (341) slide along the slide rail (36).

6. The hand-held biopsy tissue rotary cutting device according to claim 1, characterized in that, A rotary cutting drive component (4) is arranged inside the rotary cutting main body; the rotary cutting drive component (4) includes a motor (41) and a driven shaft (42). The rotating shaft of the motor (41) is connected to an input gear (43). The driven shaft (42) is arranged parallel to the rotating shaft of the motor (41). First driven gears (44) and second driven gears (45) are respectively arranged at both ends of the driven shaft (42). The first driven gear (44) meshes with the input gear (43). The second driven gear (45) meshes with an output gear (46). A third driven gear (47) is arranged on the rotary cutting knife (11), and the third driven gear (47) meshes with the output gear (46).

7. A hand-held biopsy tissue rotary cutting device according to claim 6, characterized in that, A linear drive assembly (5) is further provided inside the main body of the rotary cutting machine; the linear drive assembly includes a fixed seat (51), a limit pin (52), and a rotating shaft tube (53); the fixed seat (51) is fixedly arranged inside the main body of the rotary cutting machine, one end of the rotating shaft tube (53) extends into the fixed seat (51), a spiral guide groove (531) is arranged on the peripheral wall of the end of the rotating shaft tube (53) located inside the fixed seat (51), one end of the limit pin (52) is arranged in a limited way relative to the inner wall of the fixed seat (51), the other end of the limit pin (52) is located inside the spiral guide groove (531), the third driven gear (47) is arranged on the rotating shaft tube (53), and the rotating shaft tube (53) is driven to rotate by the rotary cutting drive assembly (4); the rear end of the rotary cutting tool (11) is fixedly connected and passes through the inside of the rotating shaft tube (53).

8. A hand-held biopsy tissue rotary cutting device according to claim 7, characterized in that, The linear drive assembly (5) further includes a limit sleeve (54) and a spring (55); the limit sleeve (54) moves linearly inside the fixed seat (51), one end of the rotating shaft tube (53) located in the spiral guide groove (531) extends into the limit sleeve (54), and the other end of the limit pin (52) penetrates through the inner wall of the limit sleeve (54) and extends into the spiral guide groove (531); retaining rings (56) are respectively fixedly arranged at both ends of the fixed seat (51), and the springs (55) are arranged between both ends of the limit sleeve (54) and the retaining rings (56).

9. The hand-held biopsy tissue rotary cutting device according to claim 8, characterized in that, A limit channel (511) is arranged along the length direction inside the fixed seat (51), and one end of the limit pin (52) is slidably arranged inside the limit channel (511).

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