Anti-blocking rotary cutter for breast surgery

Abstract

The invention provides an anti-blocking rotary cutter for breast surgery, which comprises an inner blade tube, an auger and a cross-shaped cutter are arranged in the inner blade tube, the distance between blades of the auger is gradually reduced, the cross-shaped cutter is arranged on one side with small distance between the blades of the auger, the auger and the cross-shaped cutter are connected to a rotating shaft, and the rotating shaft is connected with a rotating pump. Tissue specimens or large-particle fat cut by the rotary cutter are cut to be smaller through the packing auger and the cross-shaped cutter, and the situation that the tissue specimens or the large-particle fat are too large to block the inner blade tube and cannot be sucked out through negative pressure is prevented.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, and in particular to an anti-blocking rotary cutter for breast surgery. Background Art

[0002] Minimally invasive breast technology has been widely used in clinical practice due to its unique advantages and has become an important method for the diagnosis and treatment of breast diseases. Minimally invasive excision technology for benign breast tumors uses the vacuum principle to continuously obtain breast tissue samples through small incisions, which has the advantages of less trauma, faster recovery, and high aesthetics. The knives used for minimally invasive excision surgery on the market today usually include an inner knife and an outer knife that is placed on the inner knife. The outer knife has a sampling groove radially opened near the front end; after puncture, the tissue is sucked into the sampling groove under negative pressure conditions, and the inner knife excises the tissue forward and accommodates it in the front end of the inner knife; of course, during puncture, the inner knife will close the sampling groove at the front end, and then give up the sampling groove backward after puncturing to the position. The position and distance of the sampling groove are determined according to the amount of sampling. Negative pressure is applied during the excision process, and then excision sampling is performed. However, the inner blade tube has a small inner diameter, and the excised tissue is easy to block the inner blade tube. Applying negative pressure is not only difficult to remove it, but also increases the risk of neurovascular damage. The tissue is left in the tube and needs to be removed for cleaning, which wastes time and increases the wear of the instrument.

[0003] Laparoscopic breast surgery also belongs to the field of minimally invasive technology. It has been gradually applied to the treatment of male breast hyperplasia, breast cancer and breast reconstruction. The breast is a substantial organ without natural cavities. The operation of laparoscopic breast surgery often uses lipolysis to establish an operating space. The fat particles in the breast are coarse and the fat density is also high. The clinical method often uses a porous liposuction needle to absorb the fat particles by negative pressure. However, in actual application, when too much fat is sucked or the fat particles are coarse, it is easy to cause blockage. The current liposuction needle is frequently blocked and needs to be repeatedly disassembled for cleaning, which is not conducive to the operation. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an anti-blocking rotary cutter for breast surgery.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an anti-blocking rotary cutter for breast surgery, comprising an inner blade tube, wherein an auger and a cross knife are arranged inside the inner blade tube, the blade spacing of the auger gradually decreases, the cross knife is arranged on the side of the auger where the blade spacing is small, the auger and the cross knife are connected to a rotating shaft, and the rotating shaft is connected to a rotating pump.

[0006] Preferably, the inner blade tube is placed in the outer blade tube, one end of the outer blade tube is a puncture head, and the other end of the outer blade tube is fixed to one end of the collecting tank. A sampling opening is provided at the end of the outer blade tube close to the puncture head, and the length of the sampling opening is 15-20mm. A partition plate is provided inside the outer blade tube, and a vent is provided on the partition plate corresponding to the sampling opening.

[0007] Preferably, the side of the auger blades with a larger spacing is close to the sampling opening, and the diameters of the auger and the cross knife are smaller than the diameter of the inner blade tube.

[0008] Preferably, a stopper is provided at one end of the rotating shaft close to the sampling opening, and the stopper is a cylinder with a diameter larger than the outer diameter of the rotating shaft and smaller than the inner diameter of the inner blade tube. A square is provided on the side of the rotating shaft where the spacing between the auger blades is small, and the square is the same size as the square hole in the center of the cross knife. There is a thread on the rotating shaft on the other side of the square, and the cross knife is fixed by a nut.

[0009] Preferably, the length of the rotating shaft is 15-20 mm shorter than the length of the inner blade tube, and the rotating shaft is flush with the tail of the inner blade tube.

[0010] Preferably, the collecting tank is divided into two parts, an upper part and an lower part, by a partition plate. The upper part of the collecting tank is connected to the inner blade tube and the handle, and the lower part of the collecting tank is connected to the outer blade tube. A rotating pump, a telescopic pump and a negative pressure tube are arranged inside the handle. A rotating button and a telescopic button are arranged outside the handle. The rotating button is located on the left side of the handle close to the collecting tank, and the telescopic button is located at the rear and lower part of the rotating button.

[0011] Preferably, the axis of the rotary pump coincides with the axis of the inner blade tube and the rotating shaft, the inner blade tube and the rotating shaft are both connected to the rotary pump, a telescopic pump is provided at the lower rear of the rotary pump, the telescopic pump is connected to a telescopic movable seat, the other end of the telescopic movable seat is connected to the inner blade tube, and the telescopic movable seat supports the rotary pump.

[0012] Preferably, the negative pressure tube connects the tail of the inner blade tube and the ventilation channel, and the ventilation channel is the connecting part between the lower part of the collecting tank and the outer blade tube.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) The blade spacing of the auger of the present invention decreases from large to small, which produces a certain squeezing force on the tissue, and can push the tissue to move toward the collection tank. Combined with negative pressure, the blockage can be reduced to a great extent; (2) The present invention cuts larger tumor tissue into smaller tumor tissue by a cross knife, which can prevent larger tissue from blocking the air circulation channel, is beneficial to air circulation, and applying negative pressure can make it easier to suck out tissue and reduce blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of an anti-blocking rotary cutter for breast surgery of the present invention; Figure 2 A cross-sectional view of an anti-blocking rotary cutter for breast surgery according to the present invention; Figure 3 It is a cross-sectional view of the outer blade tube and the inner blade tube of an anti-blocking rotary cutter for breast surgery of the present invention; Figure 4 The present invention is a schematic diagram of the connection between the auger and the cross blade of an anti-blocking rotary cutter for breast surgery.

[0015] Description of the drawings: 1. Outer blade tube, 11. Puncture head, 12. Sampling opening, 13. Partition plate, 14. Vent, 15 Ventilation channel, 2. Inner blade tube, 21. Auger, 22. Cross knife, 221. Square hole, 23. Rotating shaft, 231. Block, 232. Block, 233. Nut, 3. Collecting tank, 4. Handle, 41. Rotating pump, 42. Telescopic pump, 421. Telescopic movable seat, 43. Negative pressure tube, 44. Rotating button, 45. Telescopic button. DETAILED DESCRIPTION

[0016] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed description is given in conjunction with the embodiments.

[0017] Embodiment 1

[0018] Please refer to Figure 2 and Figure 3 The present invention provides an anti-blocking rotary cutter for breast surgery, including an inner blade tube 2, wherein an auger 21 and a cross knife 22 are arranged in the inner blade tube 2, the blade spacing of the auger 21 gradually decreases, the cross knife 22 is arranged on the side of the auger 21 with a small blade spacing, the auger 21 and the cross knife 22 are connected to a rotating shaft 23, and the rotating shaft 23 is connected to a rotating pump 41.

[0019] In one embodiment, if Figure 3 As shown, the inner blade tube 2 is placed in the outer blade tube 1, one end of the outer blade tube 1 is a puncture head 11, and the other end of the outer blade tube 1 is fixed to one end of the collecting tank 3. The end of the outer blade tube 1 close to the puncture head 11 is provided with a sampling opening 12, and the length of the sampling opening 12 is 15-20mm. A partition plate 13 is provided inside the outer blade tube 1, and a vent 14 is provided at the partition plate 13 corresponding to the sampling opening 12; the side of the auger 21 with a large blade spacing is close to the sampling opening 12, and the diameters of the auger 21 and the cross knife 22 are smaller than the diameter of the inner blade tube 2.

[0020] In one embodiment, if Figure 4As shown, a stopper 231 is provided at one end of the rotating shaft 23 close to the sampling opening 12. The stopper 231 is a cylinder with a diameter larger than the outer diameter of the rotating shaft and smaller than the inner diameter of the inner blade tube. The rotating shaft 23 is provided with a block 232 on the side with a small blade spacing of the auger 21. The block 232 is the same size as the square hole 221 at the center of the cross knife 22. The rotating shaft 23 on the other side of the block 232 is threaded, and the cross knife 22 is fixed by a nut 233.

[0021] In one embodiment, if Figure 2 As shown, the length of the rotating shaft 23 is 15-20 mm shorter than the length of the inner blade tube 2, and the rotating shaft 23 is flush with the tail of the inner blade tube 2.

[0022] In one embodiment, if Figure 1 and Figure 2 As shown, the collecting tank 3 is divided into two parts, an upper part and an lower part, by a partition plate 13. The upper part of the collecting tank 3 is connected to the inner blade tube 2 and the handle 4, and the lower part of the collecting tank 3 is connected to the outer blade tube 1. The handle 4 is provided with a rotating pump 41, a telescopic pump 42 and a negative pressure tube 43. The handle 4 is provided with a rotating button 44 and a telescopic button 45 on the outside. The rotating button 44 is located on the left side of the handle 4 close to the collecting tank 3, and the telescopic button 45 is located at the rear and lower part of the rotating button 44.

[0023] In one embodiment, if Figure 2 As shown, the axis of the rotary pump 41 coincides with the axis of the inner blade tube 2 and the rotating shaft 23, the inner blade tube 2 and the rotating shaft 23 are both connected to the rotary pump 41, a telescopic pump 23 is provided at the rear lower part of the rotary pump 41, the telescopic pump 42 is connected to a telescopic movable seat 421, the other end of the telescopic movable seat 421 is connected to the inner blade tube 2, and the telescopic movable seat 421 supports the rotary pump 41; the negative pressure tube 43 connects the tail of the inner blade tube 2 and the ventilation channel 15, and the ventilation channel 15 is the connecting part between the lower part of the collecting tank 3 and the outer blade tube 1.

[0024] According to the above embodiment, embodiment 2: Please refer to Figures 1 to 4 The present invention provides an anti-blocking rotary cutting knife for breast surgery. Fat is sucked to the sampling opening 12 by negative pressure, and the inner blade tube 2 is rotary cut to cut the fat. The cut large fat particles are pushed to the cross knife 22 through the auger 21, and the cross knife 22 divides the large fat particles into small fat particles. The present invention is helpful to crush the fat and increase the fat suction efficiency. At the same time, the magnifying effect of the laparoscope can be used in combination with the present invention to accurately cut tissues and fat particles, thereby ensuring the safety of patients while accelerating the efficiency of the operation.

[0025] How to use: Combined Figures 1 to 4As shown, the outer blade tube 1 punctures the tumor site, and the negative pressure attracts the tumor tissue into the sampling opening 12 through the negative pressure tube 43. The inner blade tube 2 rotates and moves back and forth to continuously cut the tumor tissue. The tumor tissue is pushed to the cross knife 22 through the auger 21, and the cross knife 22 cuts the tumor tissue into pieces, and the tumor tissue is transported to the collection tank 3 through negative pressure.

[0026] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.

Claims

1. An anti-blocking rotary cutter for breast surgery, characterized in that: The invention comprises an inner blade tube (2), wherein an auger (21) and a cross blade (22) are arranged inside the inner blade tube (2), the blade spacing of the auger (21) gradually decreases, the cross blade (22) is arranged on the side of the auger (21) where the blade spacing is small, the auger (21) and the cross blade (22) are connected to a rotating shaft (23), and the rotating shaft (23) is connected to a rotary pump (41).

2. The anti-blocking rotary cutter for breast surgery according to claim 1, characterized in that: The inner blade tube (2) is placed in the outer blade tube (1); one end of the outer blade tube (1) is a puncture head (11); the other end of the outer blade tube (1) is fixed to one end of the collecting tank (3); the end of the outer blade tube (1) close to the puncture head (11) is provided with a sampling opening (12); the length of the sampling opening (12) is 15-20 mm; a partition plate (13) is provided inside the outer blade tube (1); and a vent (14) is provided on the partition plate (13) corresponding to the sampling opening (12).

3. The anti-blocking rotary cutter for breast surgery according to claim 1, characterized in that: The side of the auger (21) with a larger blade spacing is close to the sampling opening (12), and the diameters of the auger (21) and the cross knife (22) are smaller than the diameter of the inner blade tube (2).

4. The anti-blocking rotary cutter for breast surgery according to claim 1, characterized in that: A stopper (231) is provided at one end of the rotating shaft (23) close to the sampling opening (12); the stopper (231) is a cylinder having a diameter larger than the outer diameter of the rotating shaft and smaller than the inner diameter of the inner blade tube; a square block (232) is provided on the rotating shaft (23) at a side where the blade spacing of the auger (21) is small; the square block (232) is the same size as the square hole (221) at the center of the cross blade (22); a thread is provided on the rotating shaft (23) on the other side of the square block (232); and the cross blade (22) is fixed by a nut (233).

5. The anti-blocking rotary cutter for breast surgery according to claim 1, characterized in that: The length of the rotating shaft (23) is 15-20 mm shorter than the length of the inner blade tube (2), and the rear ends of the rotating shaft (23) and the inner blade tube (2) are flush.

6. The anti-blocking rotary cutter for breast surgery according to claim 2, characterized in that: The collecting tank (3) is divided into an upper and lower part by a partition plate (13); the upper part of the collecting tank (3) is connected to the inner blade tube (2) and the handle (4); the lower part of the collecting tank (3) is connected to the outer blade tube (1); a rotary pump (41), a telescopic pump (42) and a negative pressure tube (43) are arranged inside the handle (4); a rotating button (44) and a telescopic button (45) are arranged outside the handle (4); the rotating button (44) is located on the left side of the handle (4) near the collecting tank (3); and the telescopic button (45) is located at the rear and lower part of the rotating button (44).

7. The anti-blocking rotary cutter for breast surgery according to claim 6, characterized in that: The axis of the rotary pump (41) coincides with the axes of the inner blade tube (2) and the rotary shaft (23); the inner blade tube (2) and the rotary shaft (23) are both connected to the rotary pump (41); a telescopic pump (23) is provided at the lower rear of the rotary pump (41); the telescopic pump (42) is connected to a telescopic movable seat (421); the other end of the telescopic movable seat (421) is connected to the inner blade tube (2); and the telescopic movable seat (421) supports the rotary pump (41).

8. The anti-blocking rotary cutter for breast surgery according to claim 6, characterized in that: The negative pressure pipe (43) connects the rear end of the inner blade pipe (2) and the ventilation channel (15), and the ventilation channel (15) is the connecting portion between the lower part of the collecting tank (3) and the outer blade pipe (1).

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