A uterine cavity tissue aspiration device suitable for obstetrics and gynecology

Abstract

This invention relates to the field of medical device technology and discloses a uterine tissue aspiration device suitable for obstetrics and gynecology, comprising a suction box, a housing fixedly connected to the right side of the suction box, an adjustment component disposed within the housing's inner cavity, a piston disposed within the suction box's inner cavity, a movable rod fixedly connected to the right side of the piston, a first suction tube connected to the left side of the suction box, and a threaded bottle cap fixedly connected to the left side of the suction box and below the first suction tube. This invention, by setting an adjustment component, drives the piston to perform precise linear reciprocating motion within the suction box. Combined with a controller, the speed and direction of the motor can be precisely controlled, thereby achieving linear and stable adjustment of the negative pressure and suction rate within the suction box. This avoids pressure fluctuations from manual operation and the impact of the electric pump, allowing for the setting of optimal pressure according to surgical needs, effectively reducing the risk of endometrial damage, uterine perforation, or tissue residue caused by improper suction, and improving the safety and success rate of the surgery.

Description

Instruction Manual 1 A Uterine Tissue Aspiration Device for Obstetrics and Gynecology Technical Field This invention relates to the field of medical device technology, specifically a uterine tissue aspiration device for obstetrics and gynecology. Background Art In gynecological clinics, it is often necessary to collect endometrial tissue for pathological examination. Currently, the collection method generally involves scraping with surgical instruments or sampling tubes. However, scraping can easily damage the endometrium. Therefore, uterine tissue aspiration devices have emerged. These devices are used to extract tissue from the uterine cavity, generally used to aspirate tissue from the uterus after surgery. This method of collecting tissue from the uterine cavity does not damage the myometrium and results in less bleeding, thus its application is becoming increasingly widespread. In recent years, some uterine aspiration devices using electric suction pumps have appeared, generating continuous negative pressure through a motor drive. However, these devices are usually large and inconvenient to move, and their negative pressure is mostly applied directly to the uterine cavity through tubing, lacking an intermediate buffer and storage structure. This causes tissue fragments to be directly introduced into the pump body or long tubing, resulting in equipment contamination, blockage, and difficulty in cleaning, increasing the risk of cross-infection and the complexity of equipment maintenance. Furthermore, in existing devices, the aspirated tissue specimens are typically collected directly in a fixed reservoir. This reservoir is often integrated with the main unit or is difficult to disassemble, making specimen replacement or removal during surgery cumbersome and affecting the continuity and efficiency of the procedure. To address the problems existing in the prior art, the present invention aims to provide a uterine tissue aspiration device suitable for obstetrics and gynecology, thereby resolving the issues mentioned in the background art. To achieve the above objectives, the present invention provides the following technical solution: a uterine tissue aspiration device suitable for obstetrics and gynecology, comprising a suction box, a housing fixedly connected to the right side of the suction box, an adjustment component provided in the inner cavity of the housing, a piston provided in the inner cavity of the suction box, a movable rod fixedly connected to the right side of the piston, a first suction tube connected to the left side of the suction box, a threaded bottle cap fixedly connected to the left side of the suction box and below the first suction tube, a storage bottle threadedly connected to the bottom of the threaded bottle cap, the other end of the first suction tube connected to the threaded bottle cap, and a second suction tube connected to the other side of the top of the threaded bottle cap.By adopting the above technical solution and setting adjustment components, the piston is driven to perform precise linear reciprocating motion within the suction box. Combined with the controller, the speed and direction of the motor can be precisely controlled, thereby achieving linear and stable adjustment of the negative pressure and suction rate within the suction box. This avoids pressure fluctuations from manual operation and the impact of the electric pump, and allows for setting the optimal pressure according to surgical needs. This effectively reduces the risk of endometrial damage, uterine perforation, or tissue residue caused by improper suction, improving the safety and success rate of the surgery. At the same time, the device adopts a detachable design. The suctioned uterine cavity tissue passes through the suction head, disposable cannula, and second suction tube, and enters a detachable storage bottle through a threaded cap. As an independent container, the storage bottle is easy to unscrew after surgery for specimen processing, observation, or testing. It completely isolates tissues that may contain pathogens from the main unit of the device, preventing tissue fragments from clogging or contaminating the suction box and internal precision components. This greatly facilitates postoperative cleaning and disinfection, ensuring the long-term reliability and hygienic use of the equipment. Preferably, the adjustment assembly includes a motor fixedly mounted on the right side of the chassis. The output shaft of the motor is fixedly connected to a threaded rod, and a threaded sleeve is threadedly connected to the surface of the threaded rod. A movable plate is fixedly connected to the bottom of the threaded sleeve, and the movable plate is fixedly connected to the movable rod. By adopting the above technical solution, the driven piston performs precise linear reciprocating motion within the suction chamber. Combined with the controller, the motor's speed and direction can be precisely controlled, thereby achieving linear and stable adjustment of the negative pressure and suction rate within the suction chamber. This avoids pressure fluctuations from manual operation and the impact of the electric pump, allowing for the setting of optimal pressure according to surgical needs. This effectively reduces the risk of endometrial damage, uterine perforation, or tissue residue caused by improper suction, improving the safety and success rate of the surgery. Preferably, the other end of the second suction tube is connected to a plug, and the other end of the plug is connected to a disposable cannula. The other end of the disposable cannula is connected to a suction head. By adopting the above technical solution, it is easy to remove the used disposable cannula along with the suction head from the plug and dispose of it as medical waste. Preferably, a sliding groove is provided at the top of the inner cavity of the casing, and a slider is slidably connected to the inner cavity of the sliding groove. The bottom of the slider is fixedly connected to a threaded sleeve. By adopting the above technical solution, a stable guide and support can be provided for the transmission of the threaded rod, effectively preventing the moving rod and piston from deflecting or jamming during movement, ensuring the smoothness and accuracy of piston operation, thereby ensuring the reliability of negative pressure generation. Preferably, a handle is fixedly connected to the bottom of the suction box. By adopting the above technical solution, it is convenient for doctors to hold the device with one hand. Preferably, a controller and a battery are fixedly connected to the top of the casing. By adopting the above technical solution, it is convenient to control the device. Preferably, an movable hole is provided on the right side of the inner cavity of the suction box, and the movable rod is located in the inner cavity of the movable hole.By adopting the above technical solution, it is easy to move the movable rod and piston. Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention, by setting an adjustment component, drives the piston to perform precise linear reciprocating motion in the suction box. Combined with the controller, the speed and direction of the motor can be precisely controlled, thereby achieving linear and stable adjustment of the negative pressure and suction rate in the suction box. This avoids pressure fluctuations from manual operation and the impact of the electric pump, and can set the optimal pressure according to the needs of the surgery, effectively reducing the risk of endometrial damage, uterine perforation, or tissue residue caused by improper suction, thus improving the safety and success rate of the surgery. At the same time, the device adopts a split design. The suctioned uterine cavity tissue passes through the suction head, disposable cannula, and second suction tube, and enters the detachable storage bottle through the threaded cap. The storage bottle, as an independent container, is easy to unscrew after the operation for specimen processing, observation, or testing. It completely isolates tissues that may contain pathogens from the main unit of the device, preventing tissue fragments from clogging or contaminating the suction box and internal precision components, greatly facilitating postoperative cleaning and disinfection, and ensuring the long-term reliability and hygiene of the equipment. Figure 1 is a schematic diagram of the structure of the present invention; Figure 2 is a cross-sectional view of the structure of the present invention; Figure 3 is a partial enlarged view of point A in Figure 2 of the present invention; Figure 4 is a partial enlarged view of point B in Figure 2 of the present invention. In the figures: 1. Suction box; 2. Chassis; 3. Adjustment component; 301. Motor; 302. Threaded rod; 303. Threaded sleeve; 304. Movable plate; 4. Piston; 5. Movable rod; 6. First suction tube; 7. Threaded bottle cap; 8. Storage bottle; 9. Second suction tube; 10. Plug; 11. Disposable insertion tube; 12. Suction head; 13. Slide groove; 14. Slider; 15. Handle; 16. Controller; 17. Battery; 18. Movable hole. Detailed Description of the Embodiments The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.Example 1: Referring to Figures 1-4, a uterine tissue aspiration device suitable for obstetrics and gynecology includes a suction box 1. A housing 2 is fixedly connected to the right side of the suction box 1. An adjustment component 3 is provided in the inner cavity of the housing 2. The adjustment component 3 includes a motor 301 fixedly installed on the right side of the housing 2. A threaded rod 302 is fixedly connected to the output shaft of the motor 301. A threaded sleeve 303 is threadedly connected to the surface of the threaded rod 302. A movable plate 304 is fixedly connected to the bottom of the threaded sleeve 303. The movable plate 304 is fixedly connected to a movable rod 5. A piston 4 is provided in the inner cavity of the suction box 1. The movable rod 5 is fixedly connected to the right side of the piston 4. A first suction tube 6 is connected to the left side of the suction box 1. A threaded bottle cap 7 is fixedly connected to the left side of the suction box 1 and below the first suction tube 6. A storage bottle 8 is threadedly connected to the bottom of the threaded bottle cap 7. The other end of the first suction tube 6 is connected to the threaded bottle cap 7. The other side of the top is connected to a second suction tube 9. By setting an adjustment component 3, the piston 4 is driven to perform precise linear reciprocating motion within the suction box 1. Combined with the controller 16, the speed and direction of the motor 301 can be precisely controlled, thereby achieving linear and stable adjustment of the negative pressure and suction rate within the suction box 1. This avoids pressure fluctuations from manual operation and the impact of the electric pump, allowing for the setting of optimal pressure according to surgical needs. This effectively reduces the risk of endometrial damage, uterine perforation, or tissue residue caused by improper suction, improving the safety and success rate of the surgery. Simultaneously, the device adopts a detachable design. The aspirated uterine cavity tissue passes through the suction head 12, disposable cannula 11, and second suction tube 9, and enters the detachable storage bottle 8 through the threaded cap 7. The storage bottle 8, as an independent container, is easy to unscrew after surgery for specimen processing, observation, or delivery for testing. It completely isolates potentially pathogen-containing tissue from the main unit of the device, preventing tissue fragments from clogging or contaminating the suction box 1 and its internal precision components, greatly facilitating postoperative cleaning and disinfection. This ensures the long-term reliability and hygienic use of the equipment.Example 2: Referring to Figures 1 and 2, the other end of the second suction tube 9 is connected to a plug 10, and the other end of the plug 10 is connected to a disposable cannula 11. The other end of the disposable cannula 11 is connected to a suction head 12, making it easy to remove the used disposable cannula 11 and suction head 12 from the plug 10 for disposal as medical waste. The top of the inner cavity of the machine housing 2 is provided with a sliding groove 13, and a slider 14 is slidably connected to the inner cavity of the sliding groove 13. The bottom of the slider 14 is fixedly connected to the threaded sleeve 303, which provides stable guidance and support for the transmission of the threaded rod 302, effectively preventing the moving rod 5 and piston 4 from deflecting or jamming during movement, ensuring the smoothness and accuracy of the piston 4's operation, thereby ensuring the reliability of negative pressure generation. The bottom of the suction box 1 is fixedly connected to a handle 15, which is convenient for doctors to hold the device with one hand. The top of the machine housing 2 is fixedly connected to a controller 16 and a battery 17, which is convenient for controlling the device. A movable hole 18 is provided on the right side of the inner cavity. The movable rod 5 is located in the inner cavity of the movable hole 18, which facilitates the movement of the movable rod 5 and the piston 4.The working principle is as follows: First, check the battery level 17. Then, power on the device via controller 16 and complete the self-test. Tighten the clean storage bottle 8 to the bottom of the threaded cap 7. Next, take a set of sterile disposable tubing 11 and firmly insert its tail end into the plug 10 at the end of the second suction tube 9. Based on the surgical type (e.g., abortion, curettage) and the patient's specific condition, the doctor sets appropriate negative pressure parameters (e.g., maximum negative pressure value, suction mode) via controller HK 30134892 A instruction manual 6 16. The doctor holds the device handle 15 with one hand and inserts the suction head 12 into the predetermined position in the uterine cavity through the patient's cervix. Controller 16 starts the motor 301, causing the threaded rod 302 to rotate, driving the threaded sleeve 303 and the fixed movable plate 304 to move to the left. This pulls the movable rod 5 and piston 4 to move to the left within the suction box 1, generating a stable negative pressure in the left chamber of the suction box 1. Simultaneously, the generated negative pressure passes through the first suction tube 6. The suction is transferred to the threaded cap 7 chamber, and then acts on the suction head 12 through the second suction tube 9 and disposable cannula 11. The target tissue in the uterine cavity can be sucked up under negative pressure and finally collected in the storage bottle 8 along the above path. The doctor can adjust the pressure or pause suction in real time through the controller 16. After the operation, the device is stopped by the controller 16, the suction head 12 is removed from the patient's body, the storage bottle 8 is unscrewed, and the tissue specimen is processed. The used disposable cannula 11 and suction head 12 are removed from the plug 10 and disposed of as medical waste. The outer shell of the device, handle 15, plug 10 and other parts that may come into contact with contamination are wiped and disinfected for the next use. All standard parts used in this application are commercially available, and can be customized according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all use conventional models from the prior art. The control method is automatic control via a controller. The controller's control circuit can be implemented with simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application primarily aims to protect mechanical devices, the control method and circuit connections will not be explained in detail here. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention. The scope of the invention is defined by the appended claims and their equivalents.HK 30134892 A Claim 1 1. A uterine tissue aspiration device suitable for obstetrics and gynecology, comprising a suction box (1), characterized in that: a housing (2) is fixedly connected to the right side of the suction box (1), an adjustment component (3) is provided in the inner cavity of the housing (2), a piston (4) is provided in the inner cavity of the suction box (1), a movable rod (5) is fixedly connected to the right side of the piston (4), a first suction tube (6) is connected to the left side of the suction box (1), a threaded bottle cap (7) is fixedly connected to the left side of the suction box (1) and below the first suction tube (6), a storage bottle (8) is threadedly connected to the bottom of the threaded bottle cap (7), the other end of the first suction tube (6) is connected to the threaded bottle cap (7), and a second suction tube (9) is connected to the other side of the top of the threaded bottle cap (7). 2. According to claim 1, a uterine tissue aspiration device suitable for obstetrics and gynecology is characterized in that: the adjusting component (3) includes a motor (301) fixedly installed on the right side of the machine box (2), the output shaft of the motor (301) is fixedly connected to a threaded rod (302), the surface of the threaded rod (302) is threadedly connected to a threaded sleeve (303), the bottom of the threaded sleeve (303) is fixedly connected to a movable plate (304), and the movable plate (304) is fixedly connected to the movable rod (5). 3. According to claim 1, a uterine tissue aspiration device suitable for obstetrics and gynecology is characterized in that: the other end of the second suction tube (9) is connected to a plug (10), the other end of the plug (10) is inserted with a disposable insertion tube (11), and the other end of the disposable insertion tube (11) is connected to a suction head (12). 4. According to claim 1, a uterine tissue aspiration device suitable for obstetrics and gynecology is characterized in that: a sliding groove (13) is provided at the top of the inner cavity of the housing (2), a slider (14) is slidably connected to the inner cavity of the sliding groove (13), and the bottom of the slider (14) is fixedly connected to the threaded sleeve (303). 5. According to claim 1, a uterine tissue aspiration device suitable for obstetrics and gynecology is characterized in that: a handle (15) is fixedly connected to the bottom of the suction box (1). 6. According to claim 1, a uterine tissue aspiration device suitable for obstetrics and gynecology is characterized in that: a controller (16) and a battery (17) are fixedly connected to the top of the housing (2). 7. According to claim 1, a uterine tissue aspiration device suitable for obstetrics and gynecology is characterized in that: a movable hole (18) is provided on the right side of the inner cavity of the suction box (1), and the movable rod (5) is located in the inner cavity of the movable hole (18).HK 30134892 A Instruction Manual Appendix 1 Figure 1 Figure 2 HK 30134892 A Instruction Manual Appendix 2 Figure 3 HK 30134892 A Instruction Manual Appendix 3 Figure 4 HK 30134892 A.

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