Uterus traction device capable of avoiding diffusion of tumor cells and use method of uterus traction device

Abstract

The invention relates to a medical instrument for gynecologic operation, in particular to a uterus traction device capable of avoiding tumor cell diffusion and a using method thereof.The traction device comprises a bag, the bag is provided with a closed end used for wrapping the bottom of the uterus and an open end used for facing the cervix uteri opening, and the bag is provided with an opening. The open end is provided with an adjusting and tightening mechanism, the cervix uteri, the uterus body and the double accessories of the cervix uteri and the uterus body can be wrapped in the bag by pulling the open end, and then the open end is tightened through the adjusting and tightening mechanism. A wrapping path in the direction from the bottom of the uterus to the cervix uteri opening is adopted, it is ensured that the uterus and contents of the uterus are completely wrapped and isolated in the bag by tightening the opening end, the operation concept that isolation is carried out in advance is achieved, the operation view is protected in the whole process, and tumor-free traction in the operation process is facilitated; in addition, the risks of incision planting and abdominal cavity spreading in malignant tumor surgery can be greatly reduced, the possibility of tumor cell spreading is avoided, and iatrogenic injury is reduced.

Description

Technical Field

[0001] This invention relates to medical devices for gynecological surgery, specifically a uterine traction device that can prevent the spread of tumor cells and its method of use. Background Technology

[0002] In minimally invasive gynecological surgeries (especially laparoscopic or robotic surgeries), traditional uterine manipulators or traction methods expose the surgical field by lifting the uterus, but this still carries the risk of increasing tumor dissemination and uterine damage. For example, in cervical cancer / endometrial cancer surgery, instruments compressing the uterus may cause cancer cells to detach and enter the abdominal cavity, greatly increasing the risk of tumor dissemination. In postmenopausal women with uterine atrophy or weak myometrium, perforation is more likely during surgery. Using clamps or cup-shaped uterine manipulators can easily lead to over-lifting, potentially distorting pelvic anatomy, injuring the ureters / blood vessels, and affecting the surgical field; it can also easily cause cervical lacerations, affecting postoperative fertility. Currently, alternative methods to avoid uterine manipulation have emerged, with the core concepts being "no-touch techniques" and "internal suspension methods," emphasizing the contraindications of malignant tumor surgery and how to minimize iatrogenic injury while ensuring a clear surgical field. Therefore, the International Gynecologic Oncology Society (IGCS) guidelines emphasize that uterine manipulators are contraindicated in cervical cancer surgery for stage IA2 and above (2023); the suspension method requires intraoperative ultrasound monitoring of the uterine position to prevent ureteral distortion. However, existing "no-touch" techniques and "internal suspension methods" still pose a significant risk of tumor cell spread during implementation. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a uterine traction device and its method of use that can completely enclose and isolate the cervix, uterine body, and its two adnexa to prevent the spread of tumor cells.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problem is as follows: a uterine traction device that can prevent the spread of tumor cells, comprising a pouch made of flexible medical material, the pouch having a closed end for wrapping the bottom of the uterus and an open end for facing the cervix, the open end being provided with an adjusting tightening mechanism, by pulling the open end, the cervix, uterine body and its two appendages can be wrapped in the pouch, and then the opening end is tightened by the adjusting tightening mechanism.

[0005] Preferably, the open end is provided with a rolled edge, and the adjusting and tightening mechanism includes two hollow elastic arc strips disposed in the rolled edge and a pull line that passes through the inner cavity of the two elastic arc strips and extends out of the rolled edge. By tightening the pull line, the two elastic arc strips are brought together to tighten the open end.

[0006] Preferably, the extended portion of the pull wire is provided with two retaining rings. When the pull wire is tightened, each retaining ring abuts against the corresponding elastic arc strip, causing the two elastic arc strips to converge.

[0007] Preferably, each retaining ring has a cone on one side, which is inserted into the inner cavity of the corresponding elastic arc strip to press it against when the pull line is tightened.

[0008] Preferably, each elastic arc strip has a pull ring extending from the center of the rolled edge in the length direction, through which the open end is pulled.

[0009] Preferably, the system also includes a sheath, which can be stored inside the sac after it is closed. When the sheath is inserted into the abdominal cavity, the sac is pushed out to open it for traction.

[0010] Preferably, the closed end is provided with an arc-shaped piece, which abuts against the bottom of the uterus when the sac is pulled.

[0011] Preferably, the sheath is provided with a push rod, which pushes the arc plate to push the bag out of the sheath.

[0012] Preferably, the bag is provided with a through hole, and a sealing valve is provided in the through hole.

[0013] The present invention also provides a method of using the above-mentioned uterine traction device that can prevent the spread of tumor cells, which includes the following steps: (1) Push the sac through the sheath to the vicinity of the uterus; (2) Place the arc-shaped piece at the closed end of the sac against the bottom of the uterus; (3) Then pull the cervix, uterine body and its two adnexa into the bag by pulling the ring at the opening end of the bag; (4) Tighten the string at the open end to tighten the open end.

[0014] As can be seen from the above technical solutions, the traction device of the present invention adopts a wrapping path from the bottom of the uterus to the cervix, and ensures that the uterus and its contents are completely wrapped and isolated in the bag by tightening the opening end. This not only realizes the surgical concept of isolation first and protects the surgical field throughout the process, which is conducive to tumor-free traction during surgery, but also greatly reduces the risk of incision implantation and abdominal dissemination in malignant tumor surgery, avoids the possibility of tumor cell spread, and reduces iatrogenic damage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a preferred embodiment of the traction device of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of the bag after it is opened according to the present invention.

[0017] Figure 3 This is a schematic diagram of the structure of the bag after the opening end of the present invention is tightened. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0019] like Figure 1 , Figure 2 and Figure 3 As shown, this invention provides a uterine traction device to prevent the spread of tumor cells. It includes a pouch 1 made of flexible medical material, the size of which can be designed in different models according to the size of the uterus to suit different individual patients. It is designed with disposable transparent material, which not only does not affect the surgical field of vision but also reduces the risk of surgical infection. The pouch 1 has a closed end 11 for wrapping the bottom of the uterus and an open end 12 facing the cervix. The open end is equipped with an adjusting tightening mechanism 2. After the closed end wraps the bottom of the uterus, the cervix, uterus, and its appendages can be wrapped inside the pouch by pulling the open end. Then, the adjusting tightening mechanism tightens the open end, thereby completely enclosing and isolating the uterus and its contents inside the pouch, thus achieving the purpose of preventing the spread of tumor cells during surgery.

[0020] Specifically, the open end 12 is provided with a rolled edge 13. The adjusting and tightening mechanism 2 includes two hollow elastic arc strips 21 disposed within the rolled edge and a pull line 22 passing through the inner cavity of the two elastic arc strips and extending out of the rolled edge. By tightening the pull line, the two elastic arc strips are brought together to tighten the open end, thereby completing the wrapping of the uterus. In the implementation process, the elastic arc strips are made of medical adhesive with strong elasticity. When opened, they are in an arc shape, and the two elastic arc strips are arranged separately. After the two elastic arc strips are opened separately, the open end can be similar to an ellipse, ensuring a larger opening radius, which is conducive to traction and wrapping. When closing, the pull line is tightened and the two ends of the elastic arc strips are compressed, making the arc length shorter and the opening radius smaller, which is convenient for tightening and storage.

[0021] The present invention provides two retaining rings 23 at the protruding portion of the pull wire 22. When the pull wire is tightened, each retaining ring abuts against the corresponding elastic arc strip, causing the two elastic arc strips to converge. During the tightening process, the two separated elastic arc strips move towards each other along the rolled edge until one end of each arc strip abuts against the other end. Then, the two retaining rings abut against the other end of each elastic arc strip, thereby constraining both ends of each elastic arc strip. As the pull wire continues to tighten, the two ends of the two elastic arc strips are compressed, achieving convergence. Preferably, each retaining ring has a cone 24 on one side. When the pull wire is tightened, the cone 24 is inserted into the inner cavity of the corresponding elastic arc strip to abut against it. That is, when the elastic arc strip is compressed to a specified size, the cone 24 is pushed into the inner cavity of the elastic arc strip and locked in place, thereby fixing the open end and preventing loosening. During the pushing process, the cone-shaped truncated cone acts as a guide, facilitating its insertion into and locking into the inner cavity of the elastic arc strip. Furthermore, as the elastic arc strip contracts, a portion of the rolled edge becomes free; at this point, the pushing action of the retaining ring and the cone can also push some of the rolled edge into the inner cavity of the elastic arc strip, further filling it and enhancing locking. During implementation, the inner diameter of the elastic arc strip's cavity is much larger than the diameter of the pull wire, creating a significant gap that accommodates the cone and the rolled edge.

[0022] Preferably, each elastic arc has a traction ring 5 extending from the rolled edge at its midpoint along its length. This ensures that the position of the traction ring remains essentially fixed when the elastic arc opens or closes, and the open end can be pulled by the traction ring, allowing the sac to gradually wrap around the uterine body and its two adnexa from the bottom of the uterus until it wraps around the cervix. The invention also includes a sheath 6, which can be stored inside the sac after it is closed for easy storage. When the sheath is inserted into the abdominal cavity via puncture, the sac is pushed out to open it for traction, thereby achieving wrapping. The closed end has an arc plate 7. When the traction ring of the sac is pulled by instruments, surgical forceps or similar devices can be used to press the arc plate against the bottom of the uterus, ensuring efficient traction and preventing sac displacement.

[0023] During implementation, a push rod 8 is provided inside the sheath. This push rod pushes the arc-shaped piece to push the sac out of the sheath. The arc-shaped piece of this invention can be made of relatively thick silicone, which allows for full contact with the push rod, facilitating the pushing out of the sac within the sheath; it also adheres tightly to the bottom of the uterus, preventing injury and aiding in traction. Due to the use of two elastic arc strips, the open end of the sac, after closing, forms a near-circular shape, making it easy to place inside the sheath. Under elastic force, it adheres tightly to the inner wall of the sheath and will not easily detach. When the push rod pushes the arc-shaped piece, the two elastic arc strips move along the sheath until they detach from the sheath and enter the vicinity of the uterus, then the push rod and sheath are withdrawn. Since the two elastic arc strips are freed from the sheath and lose their constraint, they open into a near-elliptical shape under elastic force. Then, surgical instruments are used to press the arc-shaped piece against the bottom of the uterus, and traction is performed using a traction ring. Preferably, the sac has a through hole 3 and a sealing valve 4, which can be opened after the sac completely encloses and isolates the uterus, so that surgical instruments can be used to perform surgical operations inside the sac, thereby completely avoiding the spread of tumor cells, etc.

[0024] The present invention also provides a method of using the above-mentioned uterine traction device that can prevent the spread of tumor cells, which includes the following steps: First, the sac is pushed into the abdominal cavity through a sheath and enters the vicinity of the uterus. At this time, the two elastic arcs at the opening end of the sac open, and the arc plate at the closed end of the sac is pressed against the bottom of the uterus using surgical instruments. Then, the traction ring at the opening end of the sac is used to pull, so that the cervix, uterine body and its two adnexa are wrapped in the sac. Then, the suture at the opening end is tightened, so that the two elastic arcs close to tighten the opening end. In this way, the uterus and its contents are completely wrapped and isolated in the sac, thus achieving tumor-free traction during the operation.

Claims

1. A uterine traction device to prevent the spread of tumor cells, comprising a pouch made of flexible medical material, characterized in that: The sac has a closed end for wrapping the bottom of the uterus and an open end for facing the cervix. The open end is provided with an adjusting tightening mechanism. By pulling the open end, the cervix, uterine body and its two appendages can be wrapped in the sac, and then the opening end can be tightened by the adjusting tightening mechanism.

2. The uterine traction device for preventing tumor cell spread according to claim 1, characterized in that: The open end is provided with a rolled edge, and the adjusting and tightening mechanism includes two hollow elastic arc strips disposed in the rolled edge and a pull line that passes through the inner cavity of the two elastic arc strips and extends out of the rolled edge. By tightening the pull line, the two elastic arc strips are brought together to tighten the open end.

3. The uterine traction device for preventing tumor cell spread according to claim 2, characterized in that: Two retaining rings are provided on the extended part of the pull wire. When the pull wire is tightened, each retaining ring abuts against the corresponding elastic arc strip, causing the two elastic arc strips to close together.

4. The uterine traction device for preventing tumor cell spread according to claim 3, characterized in that: Each retaining ring has a cone on one side. When the pull line is tightened, the cone is inserted into the inner cavity of the corresponding elastic arc strip to press it against the wire.

5. The uterine traction device for preventing tumor cell spread according to claim 2, characterized in that: Each elastic arc has a pull ring extending from the center of the rolled edge along its length, through which the open end is pulled.

6. The uterine traction device for preventing tumor cell spread according to any one of claims 1 to 5, characterized in that: It also includes a sheath, in which the sac can be stored after being closed. When the sheath is inserted into the abdominal cavity, the sac is pushed out to open it for traction.

7. The uterine traction device for preventing tumor cell spread according to claim 6, characterized in that: The closed end is provided with an arc plate, which abuts against the bottom of the uterus when the sac is pulled.

8. The uterine traction device for preventing tumor cell spread according to claim 7, characterized in that: The sheath is equipped with a push rod, which pushes the arc plate to push the bag out of the sheath.

9. The uterine traction device for preventing tumor cell spread according to claim 1, characterized in that: The bag has a through hole, and a sealing valve is installed in the through hole.

10. A method of using the uterine traction device for preventing the spread of tumor cells as described in any one of claims 1-9, characterized in that... Includes the following steps: (1) Push the sac through the sheath to the vicinity of the uterus; (2) Place the arc-shaped piece at the closed end of the sac against the bottom of the uterus; (3) Then pull the cervix, uterine body and its two adnexa into the bag by pulling the ring at the opening end of the bag; (4) Tighten the string at the open end to tighten the open end.

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