Anti-pollution device for laparoscopic transvaginal uterine specimen retrieval

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, disclose a kind of pollution prevention device of uterine specimen under laparoscope through vagina, comprising: vaginal protective sheath, for insertion vagina, provide passageway for the extraction of uterine specimen, while protecting vaginal mucosa;Uterine specimen collection bag is connected with vaginal protective sheath, and its mouth is equipped with mouth knob, for bag mouth after specimen extraction is tightened, to prevent specimen slip and pollution;Fixed rotary cutter is set in vaginal protective sheath, for the rotary cutting of specimen when uterine specimen is extracted, facilitate the extraction of specimen;Electric rotary cutter includes motor, reduction gear set, speed regulating switch and battery compartment. The utility model is set through vaginal protective sheath and uterine specimen collection bag, can effectively prevent uterine specimen from polluting vagina and surrounding environment during extraction process, reduce the incidence of postoperative infection and other complications.

Description

Technical Field

[0001] This utility model belongs to, but is not limited to, the field of medical device technology, and particularly relates to a contamination prevention device for laparoscopic transvaginal uterine specimen collection. Background Technology

[0002] In gynecological surgery, laparoscopic transvaginal uterine specimen retrieval is a common procedure. However, during the uterine specimen retrieval process, there is a risk of specimen contamination of the vagina and surrounding environment. This can not only affect the surgical outcome but also increase the likelihood of postoperative complications such as infection. Currently, existing surgical instruments have limitations in preventing contamination and cannot effectively prevent specimen contamination. Therefore, developing a specialized contamination prevention device is of significant clinical importance. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a contamination prevention device for laparoscopic transvaginal uterine specimen collection.

[0004] This invention is achieved as follows: a contamination prevention device for transvaginal uterine specimen collection under laparoscopy, comprising:

[0005] A vaginal protective sheath is inserted into the vagina to provide a passage for the removal of uterine specimens while protecting the vaginal mucosa.

[0006] The uterine specimen collection bag is connected to the vaginal protective sheath. It has a closing knob at the opening to tighten the bag after the specimen is removed, preventing the specimen from slipping out and becoming contaminated.

[0007] A fixed rotary cutter is installed inside the vaginal protective sheath and is used to cut the specimen during uterine specimen retrieval, facilitating specimen removal.

[0008] The electric rotary cutter includes a motor, a reduction gear set, a speed adjustment switch, a battery compartment, and a vortex cutter.

[0009] Furthermore, the uterine specimen collection bag is made of medical-grade silicone soft material, protecting the bladder at the front and the rectum at the back to ensure surgical safety.

[0010] Furthermore, the motor provides power to the rotary cutter, the reduction gear set is used to adjust the rotation speed of the rotary cutter, the speed adjustment switch can realize precise control of the rotation speed, and the battery compartment provides power to the entire electric rotary cutter;

[0011] Furthermore, the inner wall of the electric rotary cutter is provided with a vortex cutter to improve the rotary cutting efficiency.

[0012] Furthermore, the closing knob is made of medical-grade plastic with a non-slip texture on its surface, making it easy for surgeons to hold and rotate during operation to tighten the opening of the uterine specimen collection bag and prevent the specimen from slipping out and becoming contaminated.

[0013] Furthermore, the blade of the fixed rotary cutter is made of stainless steel, which has a sharp cutting edge and good wear resistance, enabling it to efficiently cut uterine specimens.

[0014] Furthermore, the motor of the electric rotary cutter is a DC motor, which features small size, high torque, and adjustable speed; the reduction gear set adopts a planetary gear reduction structure, which can achieve a large reduction ratio and precisely adjust the speed of the electric rotary cutter.

[0015] Based on the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solution to be protected by this utility model are as follows:

[0016] Effective Contamination Prevention: The use of a vaginal protective sheath and uterine specimen collection bag effectively prevents contamination of the vagina and surrounding environment during uterine specimen retrieval, reducing the likelihood of postoperative infections and other complications.

[0017] Easy to operate: The design of the electric rotary cutter makes the rotary cutting process more convenient and efficient, reducing the workload of surgeons.

[0018] Safe and reliable: The uterine specimen collection bag is made of medical-grade silicone soft material, which has a good protective effect on surrounding organs and ensures the safety of the operation. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the anti-contamination device for transvaginal uterine specimen collection under laparoscopy provided in this embodiment of the utility model;

[0020] Figure 2 This is a structural diagram of the vaginal protective sheath and uterine specimen collection bag provided in this embodiment of the utility model;

[0021] Figure 3 This is a structural diagram of the fixed rotary cutter provided in an embodiment of the present invention;

[0022] Figure 4 This is a structural diagram of the electric rotary cutter provided in an embodiment of the present utility model;

[0023] In the diagram: 1. Vaginal protective sheath; 2. Uterine specimen collection bag; 3. Fixed rotary cutter; 4. Electric rotary cutter; 5. Electric rotary cutter; 6. Closure knob; 7. Motor; 8. Reduction gear set; 9. Speed ​​adjustment switch; 10. Battery compartment; 11. Vortex cutter. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0025] like Figure 1 As shown, this utility model embodiment provides a contamination prevention device for laparoscopic transvaginal uterine specimen collection, comprising:

[0026] Vaginal protective sheath 1, used for insertion into the vagina, provides a passage for the removal of uterine specimens while protecting the vaginal mucosa;

[0027] The uterine specimen collection bag 2 is connected to the vaginal protective sheath 1. It has a closing knob 6 at the opening, which is used to tighten the bag opening after the specimen is taken out to prevent the specimen from slipping out and being contaminated.

[0028] The fixed rotary cutter 3 is set inside the vaginal protective sheath 1 and is used to cut the specimen when the uterine specimen is removed, so as to facilitate the removal of the specimen;

[0029] The electric rotary cutter 4 includes a motor 7, a reduction gear set 8, a speed adjustment switch 9, a battery compartment 10, and a vortex cutter 11.

[0030] The uterine specimen collection bag is made of medical-grade silicone soft material, with the front protecting the bladder and the back protecting the rectum to ensure surgical safety.

[0031] The motor 7 provides power to the rotary cutter, the reduction gear 8 is used to adjust the rotation speed of the rotary cutter, the speed adjustment switch 9 can realize precise control of the rotation speed, and the battery compartment 10 provides power to the entire electric rotary cutter 4.

[0032] The inner wall of the electric rotary cutter 4 is provided with a vortex cutter 11 to improve the rotary cutting efficiency.

[0033] The closing knob 6 is made of medical-grade plastic and has a non-slip texture on its surface, making it easy for surgeons to hold and rotate during operation to tighten the opening of the uterine specimen collection bag and prevent the specimen from slipping out and becoming contaminated.

[0034] The blade of the fixed rotary cutter 3 is made of stainless steel, with a sharp cutting edge and good wear resistance, which can efficiently cut uterine specimens.

[0035] The motor 7 of the electric rotary cutter 4 is a DC motor, which is small in size, has high torque, and adjustable speed. The reduction gear set 8 adopts a planetary gear reduction structure, which can achieve a large reduction ratio and accurately adjust the speed of the electric rotary cutter 4.

[0036] This invention's anti-pollution device, through the scientific assembly and coordinated operation of its structures, effectively achieves a pollution-free and highly efficient operation for the transvaginal removal of uterine specimens during laparoscopic surgery.

[0037] First, the connection between the vaginal protective sheath and the uterine specimen collection bag forms the basic structure of the specimen retrieval channel. The front end of the vaginal protective sheath 1 is inserted into the vagina to open the channel and protect the vaginal mucosa. Its rear end connects to the uterine specimen collection bag 2 via a fixing buckle or spiral interface, ensuring a sealed channel during specimen retrieval and preventing the specimen from contacting the vaginal wall. The front and rear parts of the uterine specimen collection bag correspond to the anatomical locations of the bladder and rectum, respectively. The soft properties of medical-grade silicone provide cushioning protection for surrounding organs, enhancing intraoperative safety.

[0038] Secondly, the internal assembly structure of the electric rotary cutter embodies the technological realization of its high-efficiency cutting function. The electric rotary cutter 4 incorporates a built-in DC motor 7, which drives a reduction gear set 8 via an axial connection. This gear set employs a planetary reduction structure, saving space while enhancing torque output. The battery compartment 10 is embedded within the cutter handle, providing continuous power to the motor. The speed adjustment switch 9, through an electronic control module, enables multi-level speed adjustment to accommodate uterine tissue of varying hardness and size. The vortex cutter 11 on the inner wall forms a spiral cutting path during rotation, improving cutting efficiency and shortening removal time.

[0039] Furthermore, the functional positioning and material selection of the fixed rotary cutter make it an important component for auxiliary cutting. The fixed rotary cutter 3 is located inside the vaginal protective sheath 1, with the blade facing inwards towards the collection bag. It is made of stainless steel, ensuring both sharpness and wear resistance. When the electric rotary cutter cannot fully reach the edge tissue, the fixed rotary cutter acts as a pre-cutting tool, precisely severing residual tissue and working in conjunction with the electric rotary cutter to complete the entire cutting task, ensuring successful specimen detachment.

[0040] Finally, the structural design and operation of the closing knob ensure a sealed control of the specimen collection process. This knob 6 is located at the opening of the uterine specimen collection bag 2 and is tightly connected to the silicone edge of the bag opening via an embedded spiral locking structure. During operation, the doctor simply holds the non-slip textured surface and rotates it clockwise to quickly tighten the bag opening, effectively preventing specimen slippage or leakage of bodily fluids, ensuring the aseptic nature and integrity of subsequent specimen transfer. This design simplifies the operation process and improves intraoperative efficiency and safety.

[0041] In current laparoscopic transvaginal uterine specimen retrieval procedures, the specimen extraction stage has significant technical shortcomings: Firstly, in traditional retrieval, the uterine specimen comes into direct contact with the vaginal wall, greatly increasing the risk of surgical site contamination, cross-infection, or tumor cell implantation. Secondly, due to the large size and dense tissue texture of some uterine specimens, intraoperative vaginal dilation or repeated cutting is required, increasing intraoperative trauma and postoperative complications. To address these issues, this invention proposes an integrated transvaginal uterine specimen extraction anti-contamination device, focusing on specimen contamination prevention, safe cutting, and efficient operation. This device effectively reduces the risk of surgical site contamination while ensuring specimen integrity.

[0042] The core components of this device consist of a three-layer coaxial structure: a vaginal protective sheath, a uterine specimen collection bag, and a rotary cutter. During the procedure, the vaginal protective sheath is first inserted into the patient's vagina, forming a closed channel to isolate the uterine specimen from direct contact with the vaginal mucosa, reducing the risk of cell implantation and cross-contamination. The outer wall of the sheath is covered with a flexible, non-slip material, facilitating guidance and fixation during the procedure. The uterine specimen collection bag, connected to the protective sheath, is made of medical-grade silicone, possessing excellent biocompatibility and tear resistance. Its anterior and posterior structures respectively cover the spaces between the bladder and rectum, maximizing isolation from surrounding organs and effectively controlling the specimen contact area.

[0043] To improve the efficiency of removing large volumes of uterine tissue, the device incorporates two mechanisms within the sheath: a fixed rotary cutter and an electric rotary cutter. The fixed rotary cutter, embedded near the proximal end of the protective sheath, has a sharp and hard blade, allowing for manual rotary cutting of softer tissues to achieve initial volume reduction. For dense tissues resembling fibroids or adenomyosis, the operator can utilize the electric rotary cutter. This component integrates a high-speed DC micromotor and a planetary reduction gear set, combined with a vortex cutter design, forming a vortex-like spiral cutting path. This not only provides a continuous high-torque cutting force but also achieves tissue layer separation under low heat, ensuring a clear cut surface without significant carbonization.

[0044] The electric rotary cutter is operated via an external knob and speed control switch. The surgeon can adjust the speed according to tissue toughness, balancing cutting efficiency with specimen integrity. Its power module uses a built-in medical battery compartment, avoiding cable interference from external power sources and improving the cleanliness and safety of the operating table. Simultaneously, the collection bag has a rotating closing knob at the front, allowing the surgeon to immediately tighten the bag opening after the specimen is fully inserted, preventing spillage or contamination of the surgical field, ensuring smooth operation and reliable closure.

[0045] This device organically integrates a closed-loop extraction structure with an active cutting unit, overcoming the problems of instrument separation and step-by-step disruption in traditional surgery. It enables the contamination-free removal of large uterine specimens with minimal invasiveness. Through structural synergy and optimized material selection, it improves the safety, efficiency, and controllability of intraoperative tissue processing, providing an integrated solution that combines safety, protection, and cutting for minimally invasive gynecological extraction procedures.

[0046] This invention is primarily applied in the field of minimally invasive gynecological surgery, particularly suitable for the procedure of removing the uterus or its gross lesion specimen via the vaginal approach after laparoscopic hysterectomy. The device can be embedded in existing gynecological laparoscopic surgical systems and is compatible with surgical platforms such as hysteroscopes, laparoscopes, and electric cutting systems. It falls under the category of disposable surgical aids. Simultaneously, it can also be used as a contamination-proof accessory in gynecological surgical instrument packs, and is widely applicable in general gynecology, gynecologic oncology, and day surgery centers at all levels of hospitals. It is especially valuable for the treatment of large uterine fibroids, adenomyosis, and specimens suspected of malignancy.

[0047] In clinical simulation tests, this device was used to retrieve uterine specimens with a diameter >8cm during 5 hysterectomies. No specimen breakage, slippage, or vaginal mucosal contamination occurred during the procedure. The vaginal canal remained clean, and no patients developed vaginal inflammation or pelvic infection postoperatively. The surgical field contamination rate was significantly lower than that of the control group (traditional retrieval method). These data preliminarily confirm the effectiveness of the device's "channel isolation + bag closure" structure in preventing contamination.

[0048] The results of the ex vivo tissue cutting efficiency test of the electric rotary cutter showed that, on the same uterine fibroid model, the cutting time of the device was shortened by an average of 48.2% compared with manual cold knife operation. The cut edges were regular and the degree of tissue carbonization was extremely low. This indicates that the built-in vortex rotary cutting structure has good tissue uniform cutting ability and thermal control ability at high speed, which is beneficial to the preservation of specimen integrity and rapid processing.

[0049] Intraoperative feedback showed that the anti-slip textured design of the closure knob significantly improved the surgeon's grip, especially when hands were bloody or wet, it still achieved a reliable tightening action, the closure time was no more than 3 seconds, the surgeon did not need to make repeated adjustments, the entire closure operation was smooth and the closure was reliable, showing that the structure has good clinical applicability and repeatability.

[0050] In a simulated specimen transport path contamination test, specimens were immersed in fluorescently labeled liquid and then removed through the device channel. UV light detection revealed that the specimen contact path was clean and free of fluorescent residue, further demonstrating that the collection bag and protective sheath structure has excellent anti-leakage performance in forming physical isolation and airtight sealing, which can significantly reduce the difficulty of medical waste disposal and the risk of contamination.

[0051] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any modifications, equivalent substitutions and improvements made by those skilled in the art within the technical scope disclosed in this utility model, and within the spirit and principles of this utility model, should be included within the protection scope of this utility model.

Claims

1. A contamination prevention device for transvaginal uterine specimen collection under laparoscopy, comprising: A vaginal protective sheath is inserted into the vagina to provide a passage for the removal of uterine specimens while protecting the vaginal mucosa. The uterine specimen collection bag is connected to the vaginal protective sheath. It has a closing knob at the opening to tighten the bag after the specimen is removed, preventing the specimen from slipping out and becoming contaminated. A fixed rotary cutter is installed inside the vaginal protective sheath and is used to cut the specimen during uterine specimen retrieval to facilitate specimen removal; The electric rotary cutter includes a motor, a reduction gear set, a speed adjustment switch, and a battery compartment.

2. The anti-contamination device for transvaginal uterine specimen collection under laparoscopy according to claim 1, characterized in that, The uterine specimen collection bag is made of medical-grade silicone soft material, protecting the bladder at the front and the rectum at the back to ensure surgical safety.

3. The anti-contamination device for transvaginal uterine specimen collection under laparoscopy according to claim 1, characterized in that, The motor provides power to the rotary cutter, the reduction gear set is used to adjust the rotation speed of the rotary cutter, the speed adjustment switch can achieve precise control of the rotation speed, and the battery compartment provides power to the entire electric rotary cutter.

4. The anti-contamination device for transvaginal uterine specimen collection under laparoscopy according to claim 1, characterized in that, The inner wall of the electric rotary cutter is equipped with a vortex cutter to improve the rotary cutting efficiency.

5. The anti-contamination device for transvaginal uterine specimen collection under laparoscopy according to claim 1, characterized in that, The closing knob is made of medical-grade plastic with a non-slip texture on its surface, making it easy for surgeons to hold and rotate during operation to tighten the opening of the uterine specimen collection bag and prevent the specimen from slipping out and becoming contaminated.

6. The anti-contamination device for transvaginal uterine specimen collection under laparoscopy according to claim 1, characterized in that, The blade of the fixed rotary cutter is made of stainless steel.

7. The anti-contamination device for transvaginal uterine specimen collection under laparoscopy according to claim 1, characterized in that, The electric rotary cutter uses a DC motor, which is characterized by its small size, high torque, and adjustable speed; the reduction gear set adopts a planetary gear reduction structure.

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