Tissue retractor for breast tumor operation
Through the design of components such as the support base, splint, screw and motor, the problems of cumbersome operation and insufficient pulling force of tissue retractors used in traditional breast tumor surgery have been solved, flexible retraction point selection and multi-angle exposure have been achieved, the accuracy and safety of the surgery have been improved, and maintenance costs have been reduced.
Patent Information
- Application Number
- CN202511020285.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-23
- Publication Date
- 2025-09-12
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Traditional tissue retractors used in breast tumor surgery are cumbersome to operate, making it difficult to flexibly select the retraction point and insufficient to disperse the pulling force, resulting in insufficient tissue exposure, affecting the surgical effect, and possibly causing tissue damage.
A tissue retractor is designed, which includes components such as a support base, a splint, a screw, a motor, a connecting arm and a lifting plate. The height and position of the retractor can be flexibly adjusted through motor drive and screw adjustment. Combined with multi-angle retraction using an arc plate and roller, it has the function of single disassembly and replacement to ensure the stability and cleanliness of the surgical field of view.
It achieves full exposure of the surgical field of view, reduces the physical exertion of surgical assistants, avoids tissue deformation and field of view limitation, reduces the risk of instrument contamination, improves the accuracy and safety of surgery, and reduces maintenance costs.
Smart Images
Figure CN120616646A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of medical instruments, and in particular to a tissue retractor for breast tumor surgery. Background Art
[0002] The tissue retractor for breast tumor surgery is a medical device used to retract tissue during breast tumor surgery to provide a good surgical field of view. By retracting the breast tissue, it exposes the surgical area, allowing the doctor to clearly see the tumor and surrounding tissues, which helps to accurately perform tumor resection and other surgical operations.
[0003] Traditional tissue retractors used in breast tumor surgery are usually fixed in a certain position and need to be disassembled and reinstalled when adjusted. The operation is cumbersome and it is difficult to retract tissue from multiple angles, resulting in insufficient exposure of certain parts, affecting the doctor's observation and operation of the surgical area. In addition, the retraction point cannot be flexibly selected and the traction force cannot be dispersed, resulting in excessive traction at a fixed point and causing tissue damage.
[0004] Therefore, it is necessary to provide a tissue retractor for breast tumor surgery to solve the above technical problems. Summary of the Invention
[0005] The technical problem solved by the present invention is to provide a tissue retractor for breast tumor surgery that is easy to use, can flexibly select the retraction point, disperse the pulling force, can be disassembled individually or simultaneously for replacement or rearrangement, and can be flexibly configured and replaced.
[0006] In order to solve the above technical problems, the present invention provides a tissue retractor for breast tumor surgery, comprising: a support base, a splint, a first screw, a connecting arm, a second screw and a motor, wherein the first screw is rotatably mounted on one side of the support base, the splint is slidably mounted on one side of the support base and is threadedly connected to the outside of the first screw, the second screw is rotatably mounted in the support base, the motor is fixedly mounted on the top of the support base, and the top end of the second screw is fixedly mounted on the output shaft of the motor, one end of the connecting arm is slidably mounted in the support base and is threadedly connected to the second screw, a lifting plate is slidably mounted on the end of the connecting arm away from the support base, a rectangular frame is fixedly mounted on one side of the lifting plate, four limit frames are fixedly mounted on the rectangular frame, and sliders are slidably mounted in the four limit frames. The bottom of the slider and the limit frame are both provided with threaded fixing holes, and the same threaded fixing bolt is provided in the two threaded fixing holes. The tops of the four sliders are fixedly installed with arc plates, and the four arc plates are slidably installed with movable seats. The outer wall and inner wall of the movable seat are both provided with roller slots, and rollers are rotatably installed in the roller slots, and the rollers contact the arc plates. The top of the movable seat is fixedly installed with a fixed seat, and a movable cylinder is rotatably installed in the fixed seat, and a connecting rod is slidably installed in the movable cylinder, one end of the connecting rod extends to the outside of the movable cylinder and is fixedly installed with a pulling head, and the other end of the connecting rod is rotatably installed with a third screw rod, and the third screw rod extends outside the movable cylinder, and the third screw rod is threadedly connected to the movable cylinder.
[0007] Preferably, the four arc-shaped plates are distributed in a 90-degree rotational symmetry.
[0008] Preferably, a plurality of rectangular fixing holes are provided on the lifting plate, a rectangular block is provided in one end of the connecting arm close to the lifting plate, one end of the rectangular block extends outside the connecting arm and into the rectangular fixing hole, a first spring is provided in the connecting arm, and both ends of the first spring are fixedly connected to the connecting arm and the rectangular block respectively.
[0009] Preferably, both sides of the four fixing seats are integrally formed with a support plate, the top of the two support plates are provided with a limit plate, the bottom of the two limit plates are fixedly installed with a guide fixing rod, the bottom ends of the two guide fixing rods extend to the bottoms of the two support plates and are respectively fixedly installed with a trapezoidal limit block and an inverted triangle block, the outer side of the guide fixing rod is sleeved with a second spring, the two ends of the second spring are respectively fixedly connected to the fixing seat and the limit plate, the outer wall of the movable cylinder is fixedly installed with two active rods, the ends of the two active rods away from each other extend outside the fixing seat and are respectively fixedly installed with a multi-groove wheel and a ratchet, the top of the limit plate on one side of the ratchet is fixedly installed with a first pull ring, the four arc-shaped There are multiple button holes on the outer wall of the plate, and there are multiple limit round buttons in the button holes. A third spring is provided in the button hole, and the two ends of the third spring are fixedly connected to the limit round button and the arc plate respectively. There are limit holes on the four movable seats, and the limit round buttons are adapted to the limit holes. The outer walls of the four movable seats are fixedly installed with a syringe-shaped fixed cylinder on one side of the limit hole, and a pressure block is slidably installed in the syringe-shaped fixed cylinder, and one end of the push rod is fixedly installed on the side of the pressure block away from the arc plate, and the other end of the push rod extends to the outside of the syringe-shaped fixed cylinder, and a fourth spring is sleeved on the outside of the push rod, and the two ends of the fourth spring are fixedly connected to the syringe-shaped fixed cylinder and the push rod respectively.
[0010] Preferably, the multi-groove wheel is provided with a plurality of limiting grooves, the inverted triangle block is adapted to the limiting grooves, the ratchet wheel is provided with a plurality of ratchet grooves, the bottom of the trapezoidal limiting block is provided with a first inclined surface, and the first inclined surface is in contact with the ratchet grooves.
[0011] Preferably, the inner walls at both ends of the movable seat are provided with a second inclined surface.
[0012] Preferably, the two second inclined surfaces are inclined relative to each other in the left-right direction.
[0013] The gear train is a gear that is engaged with the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears of the gears
[0014] Preferably, the two linkage clamping blocks are located on both sides of the spiral groove rod.
[0015] Preferably, the plurality of second bevel gears are located on both sides of the plurality of third bevel gears.
[0016] Compared with related technologies, the tissue retractor for breast tumor surgery provided by the present invention has the following beneficial effects: The present invention provides a tissue retractor for breast tumor surgery. The support base, the splint, the first screw rod, the second screw rod, the motor, the connecting arm, the lifting plate, the first spring and the rectangular clamping block cooperate with each other. During the operation, the doctor can start the motor to flexibly adjust the height and position of the retractor through the lifting device according to the needs of the surgical operation, so that the surgical field is exposed more fully, which helps to perform operations such as tumor resection more accurately. Secondly, the retractor can be fixed in a suitable position by clamping it at the side of the operating table, which reduces the physical exertion of the surgical assistant holding the retractor, so that the doctor can better cooperate with the doctor in the operation. Perform other surgical operations; through the coordination of the third screw, connecting rod, fixed seat, retractor head, curved plate, movable seat, roller, movable cylinder, slider, limit frame and rectangular frame, during the operation, the doctor can easily change the retractor angle and position according to different surgical sites and operation requirements by sliding the retractor on the circular guide rail, thereby exposing the surgical field of view more comprehensively and accurately. The coordination of the curved plate and roller allows the retractor to retract the surgical field at multiple angles around the surgical area, and can retract the tissue from different directions, thus avoiding tissue deformation or field of view limitation that may be caused by retraction in a single direction; The cooperation of the fixing seat, the multi-groove wheel, the inverted triangle block, the limiting plate, the ratchet, the trapezoidal limiting block, the guide fixing rod, the second spring and the first pull ring can effectively prevent the staff from accidentally touching the tail end of the retractor, causing the retracted end to tilt up and causing a sudden change in the surgical field of view, providing the doctor with a stable surgical field of view, and helping the doctor to concentrate on fine operations, reducing surgical errors. Secondly, preventing the retractor from moving accidentally can reduce unnecessary contact between surgical instruments and the surrounding environment, and reduce the risk of contamination of the surgical area; the cooperation of the limiting round button, the third spring, the second inclined surface, the syringe-shaped fixing cylinder, the push rod, the fourth spring and the pressure block can ensure that the retractor is accurately fixed after moving to a specific position, making the exposure position of the surgical field of view more accurate and meeting the precise requirements of different surgical operations for the tissue retraction position. When the retractor is moved to the required position and limited, it can effectively prevent it from accidentally moving due to factors such as vibration, instrument collision or misoperation during surgery; By cooperating with the first bevel gear, the rotating shaft, the second bevel gear, the third bevel gear, the spiral groove rod, the linkage clamp, the second pull ring, the protrusion, the fifth spring and the pull rod, when one or two arc plates are pulled in opposite directions, the four arc plates can be moved out of the limit frame at the same time, so that comprehensive cleaning and thorough disinfection can be carried out more conveniently to avoid infection caused by residual surgical instruments. Secondly, if the guide rails are damaged during the operation or the number and position of the guide rails need to be adjusted according to different surgical requirements, they can be disassembled individually or simultaneously for replacement or rearrangement, which improves the applicability of the retractor. For the repair and maintenance of the guide rails, they can be disassembled individually for inspection, repair or replacement of parts without overall replacement, which reduces maintenance costs and extends the service life of the guide rails. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic structural diagram of a first embodiment of a tissue retractor for breast tumor surgery provided by the present invention; Figure 2 for Figure 1 A schematic cross-sectional view of a portion of the structure shown; Figure 3 for Figure 2 Schematic diagram of part of the structure shown; Figure 4 for Figure 3 Schematic diagram of the disassembly of the rectangular frame, curved plate and movable seat shown; Figure 5 for Figure 4 A schematic cross-sectional view of the third screw rod, connecting rod, movable cylinder and movable seat shown; Figure 6 for Figure 4 A schematic cross-sectional view of the top of the rectangular frame and the limiting frame shown; Figure 7 for Figure 4The schematic cross-sectional view of the slider and limit frame shown; Figure 8 for Figure 2 The connecting arm, rectangular block and lifting plate are shown as a schematic cross-sectional view after being disassembled; Figure 9 A schematic diagram of a second embodiment of the tissue retractor for breast tumor surgery provided by the present invention; Figure 10 for Figure 9 Schematic diagram of the assembly of the movable seat, fixed seat, movable cylinder and curved plate shown; Figure 11 for Figure 10 Another perspective diagram of the structure shown; Figure 12 for Figure 10 The schematic cross-sectional view of the movable seat, curved plate and syringe-shaped fixed cylinder shown; Figure 13 A schematic diagram of a third embodiment of the tissue retractor for breast tumor surgery provided by the present invention; Figure 14 for Figure 13 A schematic diagram of the four curved plates shown after they move away from each other; Figure 15 for Figure 14 The schematic cross-sectional view of the rectangular frame, limit frame and slider shown; Figure 16 for Figure 14 The schematic cross-sectional view of the limit frame and slider shown; Figure 17 for Figure 15 The diagram shows the assembly of the second bevel gear, the third bevel gear, the spiral groove rod and the linkage clamping block.
[0018] Numbers in the figure: 1. Support seat; 2. Clamping plate; 3. First screw rod; 4. Limiting frame; 5. Arc plate; 6. Rectangular frame; 7. Movable cylinder; 8. Fixed seat; 9. Rectangular clamping block; 10. Lifting plate; 11. Connecting arm; 12. Motor; 13. Second screw rod; 14. Pull-down head; 15. Connecting rod; 16. Third screw rod; 17. Transparent protective film; 18. Slider; 19. Roller; 20. Moving seat; 21. Threaded fixing bolt; 22. First spring; 23. Limiting round button; 24. Limiting plate; 25. Inverted triangle block; 26 , multi-groove wheel; 27, first pull ring; 28, trapezoidal limit block; 29, ratchet; 30, second spring; 31, guide fixing rod; 32, syringe-shaped fixing cylinder; 33, third spring; 34, second inclined surface; 35, push rod; 36, fourth spring; 37, pressure block; 38, spiral groove rod; 39, first bevel gear; 40, rotating shaft; 41, threaded fixing hole; 42, second pull ring; 43, second bevel gear; 44, third bevel gear; 45, fifth spring; 46, linkage clamp; 47, pull rod; 48, protrusion. DETAILED DESCRIPTION
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] First embodiment: Please refer to Figures 1-8In the first embodiment of the present invention, a tissue retractor for breast tumor surgery includes: a support base 1, a splint 2, a first screw rod 3, a connecting arm 11, a second screw rod 13 and a motor 12. The first screw rod 3 is rotatably mounted on one side of the support base 1. A knob is fixedly mounted on the bottom of the first screw rod 3. When the support base 1 needs to be clamped to the side of the operating bed, the splint 2 is raised by rotating the knob so that the splint 2 contacts the bottom of the operating bed. The splint 2 is slidably mounted on one side of the support base 1 and is threadedly connected to the outside of the first screw rod 3. The second screw rod 13 is rotatably mounted in the support base 1. The motor The motor 12 is fixedly mounted on the top of the support base 1, and the top end of the second screw rod 13 is fixedly mounted on the output shaft of the motor 12. One end of the connecting arm 11 is slidably mounted in the support base 1 and is threadedly connected to the second screw rod 13. The end of the connecting arm 11 away from the support base 1 is slidably mounted with a lifting plate 10. A rectangular frame 6 is fixedly mounted on one side of the lifting plate 10. Four limit frames 4 are fixedly mounted on the rectangular frame 6. Sliders 18 are slidably mounted in the four limit frames 4. Threaded fixing holes 41 are provided on the bottom of the slider 18 and the limit frame 4. The two threaded fixing holes 41 The same threaded fixing bolt 21 is provided inside. The tops of the four sliders 18 are fixedly installed with an arc plate 5. The four arc plates 5 are slidably installed with a moving seat 20. The outer wall and the inner wall of the moving seat 20 are provided with a roller slot. The roller 19 is rotatably installed in the roller slot. The roller 19 contacts the arc plate 5. The top of the moving seat 20 is fixedly installed with a fixed seat 8. The movable cylinder 7 is rotatably installed in the fixed seat 8. The connecting rod 15 is slidably installed in the movable cylinder 7. One end of the connecting rod 15 extends to the outside of the movable cylinder 7 and is fixedly installed with the traction head 14. The other end of the connecting rod 15 rotates. A third screw rod 16 is movably installed, and the third screw rod 16 extends outside the movable cylinder 7, and the third screw rod 16 is threadedly connected to the movable cylinder 7. A transparent protective film 17 is also provided at the bottom of the rectangular frame 6. The top of the transparent protective film 17 and the bottom of the rectangular frame 6 are fixedly installed with Velcro, so that the transparent protective film 17 can be firmly adhered to the bottom of the rectangular frame 6. The transparent protective film 17 allows the doctor to directly observe the condition of the skin under the retractor during the operation, including the color of the skin, whether there is pressure damage, etc., which helps to detect problems in time and adjust the position or pressure of the retractor.
[0021] The four arc-shaped plates 5 are distributed in a 90-degree rotational symmetry.
[0022] A plurality of rectangular fixing holes are provided on the lifting plate 10, and a rectangular block 9 is provided in one end of the connecting arm 11 close to the lifting plate 10, and one end of the rectangular block 9 extends to the outside of the connecting arm 11 and extends into the rectangular fixing hole. A first spring 22 is provided in the connecting arm 11, and the two ends of the first spring 22 are fixedly connected to the connecting arm 11 and the rectangular block 9 respectively. When the connecting arm 11 rises to a point where it can no longer rise and the position of the rectangular frame 6 needs to be adjusted, the doctor holds the handle on one side of the lifting plate 10 and uses his thumb to press the rectangular block 9 to press the rectangular block 9 into the connecting arm 11 to slide the lifting plate 10. When the lifting plate 10 slides a certain distance, the rectangular block 9 is released, and one end of the rectangular block 9 extends into the rectangular fixing hole again to restrict the lifting plate 10 to prevent movement.
[0023] The working principle of the tissue retractor for breast tumor surgery provided by the present invention is as follows: By turning the knob at the bottom of the first screw rod 3, the splint 2 is raised to clamp the device to the side of the operating bed, and the motor 12 is started. The output shaft of the motor 12 drives the second screw rod 13 to rotate, so that the connecting arm 11 is lowered, and the transparent protective film 17 is in contact with and fits the patient's skin. Then the motor 12 is turned off. When a retractor is needed to retract the tissue during the operation, the movable seat 20 is slid to the specified position, and the third screw rod 16 is turned to extend the retractor head 14. Then, the retractor head 14 is used to retract the tissue, and then the third screw rod 16 is turned in the opposite direction to make the retractor head 14 retract the tissue. When multi-angle retraction is required, During retraction, the positions of multiple retraction heads 14 can be adjusted by sliding the movable seat 20. When the retractor is not enough to retract the head 14, remove the threaded fixing bolt 21, push the arc plate 5 in the direction away from the corresponding arc plate 5, so that the two ends of the arc plate 5 no longer contact one end of the other two arc plates 5, slide the new movable seat 20 into the arc plate 5, and finally push the arc plate 5 again so that the two ends of the arc plate 5 contact one end of the other two arc plates 5, adjust the new position of the retraction head 14, and retract the tissue from different directions to avoid tissue deformation or field of view limitation that may be caused by retraction in a single direction.
[0024] Compared with related technologies, the tissue retractor for breast tumor surgery provided by the present invention has the following beneficial effects: The present invention provides a tissue retractor for breast tumor surgery. The support base 1, the splint 2, the first screw 3, the second screw 13, the motor 12, the connecting arm 11, the lifting plate 10, the first spring 22 and the rectangular clamping block 9 cooperate with each other. During the operation, the doctor can start the motor 12 to flexibly adjust the height and position of the retractor through the lifting device according to the needs of the surgical operation, so that the surgical field is exposed more fully, which helps to perform operations such as tumor resection more accurately. Secondly, the retractor can be fixed in a suitable position by clamping it at the side of the operating table, reducing the physical exertion of the surgical assistant holding the retractor, so that the doctor can better cooperate with the doctor in other operations. other surgical operations; through the cooperation of the third screw 16, the connecting rod 15, the fixed seat 8, the retractor head 14, the curved plate 5, the movable seat 20, the roller 19, the movable cylinder 7, the slider 18, the limit frame 4 and the rectangular frame 6, during the operation, the doctor can easily change the retractor angle and position according to different surgical sites and operation requirements by sliding the retractor on the annular guide rail to more comprehensively and accurately expose the surgical field of view. The cooperation of the curved plate 5 and the roller 19 can allow the retractor to perform multi-angle retraction around the surgical area, and can pull the tissue from different directions, avoiding tissue deformation or field of view limitation that may be caused by retraction in a single direction.
[0025] Second embodiment: Based on the tissue retractor for breast tumor surgery provided in the first embodiment of the present application, the second embodiment of the present application provides another tissue retractor for breast tumor surgery. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.
[0026] The second embodiment of the present invention will be further described below with reference to the accompanying drawings and implementation plans.
[0027] Please refer to Figures 9-12The tissue retractor for breast tumor surgery also includes two support plates, which are integrally formed on both sides of the fixed seat 8. The tops of the two support plates are provided with limit plates 24, and the bottoms of the two limit plates 24 are fixedly installed with guide fixing rods 31. The bottom ends of the two guide fixing rods 31 extend to the bottoms of the two support plates and are respectively fixed with trapezoidal limit blocks 28 and inverted triangle blocks 25. The outer side of the guide fixing rod 31 is sleeved with a second spring 30, and the two ends of the second spring 30 are respectively fixedly connected to the fixed seat 8 and the limit plates 24. Two active rods are fixedly installed on the outer wall of the movable cylinder 7. The ends of the two active rods away from each other extend to the outside of the fixed seat 8 and are respectively fixed with multi-grooved wheels 26 and ratchet wheels 29. This can effectively prevent the staff from accidentally touching the tail end of the retractor, causing the retracted end to tilt and causing a sudden change in the surgical field of view. A first pull ring 27 is fixedly installed on the top of the limiting plate 24 on one side of the ratchet 29. A plurality of button holes are provided on the outer walls of the four arc-shaped plates 5. A limiting round button 23 is provided in each of the button holes. A third spring 33 is provided in the button hole. The two ends of the third spring 33 are respectively fixedly connected to the limiting round button 23 and the arc-shaped plate 5. A limiting hole is provided on the four movable seats 20, and the limiting round button 23 is adapted to the limiting hole. A syringe-shaped fixed cylinder 32 is fixedly installed on the outer wall of the four movable seats 20 on one side of the limiting hole. A pressure block 37 is slidably installed in the syringe-shaped fixed cylinder 32. One end of the push rod 35 is fixedly installed on the side of the pressure block 37 away from the arc-shaped plate 5. The other end of the push rod 35 extends to the outside of the syringe-shaped fixed cylinder 32. A fourth spring 36 is sleeved on the outer side of the push rod 35. The two ends of the fourth spring 36 are respectively fixedly connected to the syringe-shaped fixed cylinder 32 and the push rod 35.
[0028] The multi-grooved wheel 26 is provided with a plurality of limiting grooves, the inverted triangle block 25 is adapted to the limiting grooves, the ratchet 29 is provided with a plurality of ratchet grooves, and the bottom of the trapezoidal limiting block 28 is provided with a first inclined surface, and the first inclined surface is in contact with the ratchet groove. In order to avoid the medical staff accidentally touching the tail end of the retractor, causing the retracted end to tilt and causing a sudden change in the surgical field of view, by pulling and releasing the first pull ring 27, the bottom of the trapezoidal limiting block 28 contacts the ratchet 29, and the movable cylinder 7 is no longer easy to rotate, thereby restricting the movable cylinder 7. The movable cylinder 7 drives the multi-grooved wheel 26 to rotate, so that the inverted triangle block 25 continuously moves on the multiple limiting grooves, so that the retraction head 14 can be intermittently adjusted.
[0029] The inner walls of both ends of the movable base 20 are provided with second inclined surfaces 34 .
[0030] The two second inclined surfaces 34 are relatively inclined in the left and right directions. By setting the second inclined surfaces 34, the movable seat 20 can be easily slid on the arc plate 5, and the inverted triangle block 25 can be squeezed into the button hole to avoid too many inverted triangle blocks 25 hindering its movement.
[0031] When the height of the pulling head 14 needs to be adjusted, the first pull ring 27 is first pulled upward to make the trapezoidal limit block 28 away from the ratchet 29, and then the pulling head 14 is adjusted. When the pulling head 14 is adjusted downward, the movable cylinder 7 will drive the multi-groove wheel 26 to rotate through the active rod, so that the inverted triangle block 25 continuously moves on multiple limit grooves, which can make the pulling head 14 intermittently adjusted. When the adjustment is completed, the first pull ring 27 is released to make the bottom of the trapezoidal limit block 28 contact the ratchet groove to prevent accidental touch. When sliding the movable seat 20, press the push rod 35 to make the pressure block 37 against the limit round button 23 and press it into the button hole. After sliding to the specified position, release it, and the limit round button 23 is inserted into the limit hole, which can further limit the movable seat 20. Through the arrangement of the above-mentioned components, the present invention can effectively prevent the staff from accidentally touching the tail end of the retractor, causing the retracted end to tilt up and causing a sudden change in the surgical field of view, providing the doctor with a stable surgical field of view, and helping the doctor to concentrate on performing delicate operations, reducing surgical errors. Secondly, preventing the retractor from moving accidentally can reduce unnecessary contact between surgical instruments and the surrounding environment, reduce the risk of contamination of the surgical area, ensure that the retractor is accurately fixed after moving to a specific position, make the exposed position of the surgical field of view more accurate, and meet the precise requirements of different surgical operations for the tissue retraction position. When the retractor is moved to the desired position and is limited, it can effectively prevent it from accidentally moving due to factors such as vibration, instrument collision or misoperation during surgery.
[0032] Third embodiment: Based on the tissue retractor for breast tumor surgery provided in the second embodiment of this application, the third embodiment of this application provides another tissue retractor for breast tumor surgery. The third embodiment is only a preferred embodiment of the second embodiment, and the implementation of the third embodiment will not affect the independent implementation of the second embodiment.
[0033] The third embodiment of the present invention will be further described below with reference to the accompanying drawings and implementation plans.
[0034] Please refer to Figure 13-Figure 17The tissue retractor for breast tumor surgery also includes four spiral groove rods 38, which are rotatably installed in four limit frames 4 respectively. The four sliders 18 are all sleeved on the outside of the spiral groove rods 38. The outer walls of the four spiral groove rods 38 are fixedly installed with a third bevel gear 44. A plurality of rotating shafts 40 are rotatably installed in the rectangular frame 6. The first bevel gear 39 and the second bevel gear 43 are fixedly installed at both ends of the rotating shaft 40. The second bevel gear 43 is meshed with the third bevel gear 44, and the plurality of rotating shafts 40 are meshed with the first bevel gear 39 at one end of the second bevel gear 43. Two linkage clamps 46 are slidably installed in the slider 18. The inner walls of the two linkage clamps 46 are fixed with the first bevel gear 39 and the second bevel gear 43 are meshed with the second bevel gear 43. They are all fixedly installed with protrusions 48, and the spiral groove rods 38 are all provided with spiral grooves. The protrusions 48 are slidably installed in the spiral grooves. The sides of the two linkage clamps 46 that are away from each other are fixedly installed with pull rods 47. The ends of the two pull rods 47 that are away from each other extend to the outside of the slider 18 and are fixedly installed with second pull rings 42. The outer side of the pull rod 47 is sleeved with a fifth spring 45, and the two ends of the fifth spring 45 are respectively fixedly connected to the linkage clamps 46 and the slider 18. When one or two arc plates 5 are pulled in opposite directions, the four arc plates 5 can be moved out of the limit frame 4 at the same time. By pulling the two second pull rings 42, they can be disassembled individually or simultaneously for replacement or rearrangement, thereby improving the applicability of the retractor.
[0035] The two linkage clamping blocks 46 are both located on both sides of the spiral groove rod 38 .
[0036] Multiple second bevel gears 43 are located on both sides of multiple third bevel gears 44. The spiral groove rod 38 drives the rotating shaft 40 to rotate through the third bevel gear 44. When the rotating shaft 40 rotates, it drives another rotating shaft 40 to rotate through the first bevel gear 39, so that the remaining spiral groove rods 38 rotate at the same time, and the four sliders 18 are moved out at the same time.
[0037] When the retractor needs to be disinfected and cleaned, the threaded fixing bolt 21 is removed, and one or two arc plates 5 are pulled in opposite directions so that the protrusion 48 cooperates with the spiral groove on the spiral groove rod 38, so that the spiral groove rod 38 drives the rotating shaft 40 to rotate through the third bevel gear 44. When the rotating shaft 40 rotates, it drives another rotating shaft 40 to rotate through the first bevel gear 39, so that the remaining spiral groove rods 38 rotate at the same time, and the four sliders 18 are moved out at the same time and can be disinfected. When a single retractor head 14 needs to be cleaned, the threaded fixing bolt 21 is removed, and the two second pull rings 42 are pulled to move the protrusion 48 away from the spiral groove on the spiral groove rod 38, and slide By moving the arc plate 5, the retractor head 14 can be removed. Through the arrangement of the above-mentioned components, the present invention can move four arc plates 5 out of the limit frame 4 at the same time by pulling one or two arc plates 5 in opposite directions, so that comprehensive cleaning and thorough disinfection can be carried out more conveniently to avoid infection caused by residual surgical instruments. Secondly, if the guide rails are damaged during the operation or the number and position of the guide rails need to be adjusted according to different surgical requirements, they can be disassembled individually or simultaneously for replacement or rearrangement, which improves the applicability of the retractor. For the repair and maintenance of the guide rails, they can be disassembled individually for inspection, repair or replacement of parts without overall replacement, which reduces maintenance costs and extends the service life of the guide rails.
[0038] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A tissue retractor for breast tumor surgery, comprising: The cam is fixedly mounted on the support base, and the top end of the second screw rod is fixedly mounted on the output shaft of the motor. One end of the connecting arm is slidably mounted in the support base and is threadedly connected to the second screw rod. The cam is characterized in that a lifting plate is slidably mounted on one end of the connecting arm away from the support base, a rectangular frame is fixedly mounted on one side of the lifting plate, four limit frames are fixedly mounted on the rectangular frame, and sliders are slidably mounted in the four limit frames, and the bottom of the slider and the limit frame A threaded fixing hole is provided on each of the four sliders, and the same threaded fixing bolt is provided in two of the threaded fixing holes. An arc plate is fixedly installed on the top of the four sliders, and a movable seat is slidably installed on the four arc plates. The outer wall and the inner wall of the movable seat are provided with roller slots, and rollers are rotatably installed in the roller slots. The rollers contact the arc plate, and a fixed seat is fixedly installed on the top of the movable seat. A movable cylinder is rotatably installed in the fixed seat, and a connecting rod is slidably installed in the movable cylinder. One end of the connecting rod extends to the outside of the movable cylinder and is fixedly installed with a pulling head, and a third screw rod is rotatably installed on the other end of the connecting rod, and the third screw rod extends to the outside of the movable cylinder, and the third screw rod is threadedly connected to the movable cylinder.
2. The tissue retractor for breast tumor surgery according to claim 1, characterized in that: The four arc-shaped plates are distributed in a 90-degree rotational symmetry.
3. The tissue retractor for breast tumor surgery according to claim 1, characterized in that: A plurality of rectangular fixing holes are provided on the lifting plate, a rectangular block is provided in one end of the connecting arm close to the lifting plate, one end of the rectangular block extends outside the connecting arm and into the rectangular fixing hole, a first spring is provided in the connecting arm, and two ends of the first spring are fixedly connected to the connecting arm and the rectangular block respectively.
4. The tissue retractor for breast tumor surgery according to claim 1, characterized in that: The two ends of the guide rail are fixedly mounted on the two support rails, and the two ends of the guide rail are fixedly mounted on the two support rails. The guide rails have a bottom end and a bottom end. The two ends of the guide rail are fixedly mounted on the two support rails. There are multiple button holes on the outer wall, and a limit round button is provided in each of the button holes. A third spring is provided in the button hole, and the two ends of the third spring are fixedly connected to the limit round button and the arc plate respectively. A limit hole is provided on the four movable seats, and the limit round button is adapted to the limit hole. The outer wall of the four movable seats is fixedly installed with a syringe-shaped fixed cylinder on one side of the limit hole, and a pressure block is slidably installed in the syringe-shaped fixed cylinder, and one end of the push rod is fixedly installed on the side of the pressure block away from the arc plate, and the other end of the push rod extends to the outside of the syringe-shaped fixed cylinder, and a fourth spring is provided on the outside of the push rod, and the two ends of the fourth spring are fixedly connected to the syringe-shaped fixed cylinder and the push rod respectively.
5. The tissue retractor for breast tumor surgery according to claim 4, characterized in that: The multi-groove wheel is provided with a plurality of limiting grooves, the inverted triangle block is adapted to the limiting grooves, the ratchet wheel is provided with a plurality of ratchet grooves, the bottom of the trapezoidal limiting block is provided with a first inclined surface, and the first inclined surface is in contact with the ratchet grooves.
6. The tissue retractor for breast tumor surgery according to claim 4, characterized in that: The inner walls at both ends of the movable seat are provided with second inclined surfaces.
7. The tissue retractor for breast tumor surgery according to claim 6, characterized in that: The two second inclined surfaces are inclined relative to each other in the left-right direction.
8. The tissue retractor for breast tumor surgery according to claim 1, characterized in that: The gears are connected with the third gear of the gear train, and the gears are connected with the gear train by the spring, and the gears are connected with the gear train by the spring.
9. The tissue retractor for breast tumor surgery according to claim 8, characterized in that: The two linkage clamping blocks are both located on both sides of the spiral groove rod.
10. The tissue retractor for breast tumor surgery according to claim 8, characterized in that: The plurality of second bevel gears are located on both sides of the plurality of third bevel gears.