A laparoscopic surgery auxiliary structure
By using traction components and puncture needles in the laparoscopic surgical aids, the problem of instrument interference in single-port laparoscopic surgery is solved, enabling precise traction of obstructive structures, improving surgical efficiency and safety, and reducing patient trauma and recovery difficulty.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING JISHUITAN HOSPITAL
- Filing Date
- 2025-03-04
- Publication Date
- 2026-07-21
AI Technical Summary
In single-port laparoscopic surgery, interference between instruments makes the operation difficult, especially during delicate procedures such as lymph node dissection, which increases surgical trauma and time. Furthermore, current technology makes it difficult to effectively avoid bowel obstruction of the surgical field.
A laparoscopic surgical aid structure was designed, including a traction element and a puncture needle. It enters the abdominal cavity through the trocar opening, connects with the obstructing tissue using the traction element, and forms a puncture hole under the guidance of the traction line, which then leads out the traction line to avoid interference with other instruments, thereby achieving precise traction on the obstructing structure.
It simplifies the process of determining and guiding the position of the traction suture, reduces patient trauma and postoperative recovery burden, improves the efficiency and safety of the operation, reduces the risks caused by repeated traction and position adjustments, and ensures the smooth progress of the operation.
Smart Images
Figure CN119908779B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medical device technology, and in particular to an auxiliary structure for laparoscopic surgery. Background Technology
[0002] During laparoscopic surgery, especially single-port laparoscopic surgery, bowel segments often obstruct the surgical field when clearing pelvic lymph nodes and para-aortic lymph nodes.
[0003] In related techniques, multi-port laparoscopic surgery requires an assistant to use dissecting forceps to push away obstructions. However, sometimes the obstructions are multi-directional, necessitating additional abdominal puncture ports to insert instruments for pushing them away. This not only increases surgical trauma but also presents numerous inconveniences for the surgeon, such as challenges in operational coordination and prolonged operation time. While single-port laparoscopic surgery offers advantages in terms of aesthetics and minimal trauma, the instruments exhibit the so-called "chopstick effect," where instruments interfere with each other within a single port, making the procedure even more difficult. In single-port surgery, the limited number of instruments and their tendency to interfere with each other force the surgeon to operate with extra caution to avoid instrument collisions that could disrupt the procedure. This effect is particularly pronounced during delicate procedures such as lymph node dissection, causing significant inconvenience to the surgeon. Summary of the Invention
[0004] In view of this, the purpose of the present invention is to overcome the shortcomings of related technologies, and the present invention provides an auxiliary structure for laparoscopic surgery.
[0005] This invention provides the following technical solution:
[0006] A laparoscopic surgical aid structure is used to assist in traction of intra-abdominal structures that obstruct surgery. The laparoscopic surgical aid structure includes a traction element and a puncture needle.
[0007] One end of the traction member is connected to a traction line, and the end of the traction member opposite to the traction line is provided with a traction portion. The traction member is used to enter the patient's abdominal cavity through the trocar opening and to connect with the structures and tissues that obstruct the surgery using the traction portion. The puncture needle has a needle tip and a limiting portion is provided on the side wall of the puncture needle near the needle tip. The puncture needle is used to puncture the patient's skin near the traction member, enter the patient's abdominal cavity, and form a puncture hole. During this process, the limiting portion is used to guide the traction line near the traction member, and then the puncture needle is withdrawn from the puncture hole, while the traction line is simultaneously guided out of the puncture hole.
[0008] As a further improvement to the above technical solution, the traction component includes a traction hook or a traction clamp. The traction hook is used to hook onto the obstructive structures in the patient's abdominal cavity, and the traction clamp is used to grasp the obstructive structures in the patient's abdominal cavity.
[0009] As a further improvement to the above technical solution, one end of the pulling hook is connected to the pulling line, and the other end of the pulling hook is bent to form a pulling part. The diameter of the pulling hook gradually decreases from the hook body to the hook tip.
[0010] As a further improvement to the above technical solution, the traction clamp includes a clamp body, a first clamping member, and a second clamping member; the first clamping member is fixedly disposed on the clamp body, and the second clamping member is hinged to the clamp body; the first clamping member and the second clamping member are respectively provided with a first clamping portion and a second clamping portion; the second clamping member can swing relative to the first clamping member and drive the second clamping portion to move closer to or away from the first clamping portion; the first clamping portion and the second clamping portion cooperate to form a traction portion.
[0011] As a further improvement to the above technical solution, the first clamping part is provided with a first friction tooth, and the second clamping part is provided with a second friction tooth corresponding to the first friction tooth, and the first friction tooth and the second friction tooth can mesh with each other.
[0012] As a further improvement to the above technical solution, a first limiting rod and a second limiting rod are provided on the side wall of the puncture needle near the needle tip. One end of the first limiting rod and the second limiting rod are connected to the side wall of the puncture needle. The axes of the first limiting rod and the second limiting rod are at an acute angle to the axis of the puncture needle. The ends of the first limiting rod and the second limiting rod away from the puncture needle are close to each other.
[0013] As a further improvement to the above technical solution, the axes of the first limiting rod, the second limiting rod, and the puncture needle are all located in the same plane.
[0014] As a further improvement to the above technical solution, the distance between the first limiting rod and the needle tip is less than the distance between the second limiting rod and the needle tip, and the length of the first limiting rod is greater than the length of the second limiting rod.
[0015] As a further improvement to the above technical solution, the first limiting rod and the second limiting rod are respectively hinged to the side wall of the puncture needle, and a coil spring is provided at the hinge point. A tension rope is connected between the side wall of the first limiting rod and the side wall of the second limiting rod. Under the action of the coil spring, the first limiting rod and the second limiting rod are offset away from the puncture needle and the tension rope is tightened.
[0016] As a further improvement to the above technical solution, a sliding block is provided at the end of the puncture needle away from the needle tip. The sliding block can slide relative to the puncture needle. A control rope is threaded through the puncture needle. One end of the control rope is connected to the sliding block, and the other end of the control rope is connected to the tension rope.
[0017] As a further improvement to the above technical solution, the laparoscopic surgical auxiliary structure also includes a fixation seat, which is set on the operating table and has a connecting part. The fixation seat is connected to the traction line through the connecting part.
[0018] As a further improvement to the above technical solution, the fixed base is provided with connecting rings, and multiple connecting rings are evenly distributed around the circumference of the fixed base to form a connecting part.
[0019] Compared with related technologies, the advantages of this invention are:
[0020] The laparoscopic surgery aid structure provided in this application, when assisting surgeons in performing laparoscopic surgery on patients, if the complex vascular network or other structures inside the patient's abdominal cavity obstruct or block the predetermined surgical location, medical personnel can first use clamping instruments to clamp the traction device, insert it into the patient's abdominal cavity through the trocar port, and carefully adjust its position to bring it as close as possible to the structures that are causing surgical obstacles.
[0021] Next, the traction component will connect with these tissue structures. Subsequently, on the patient's skin near the current location of the traction component, medical staff will perform a new puncture, using a puncture needle to re-enter the patient's abdominal cavity, creating a new puncture hole.
[0022] Once the puncture needle is successfully inserted into the abdominal cavity, its limiting part will connect with the traction line on the traction device. At this point, the puncture needle can be safely withdrawn from the puncture hole. Simultaneously, guided by the puncture needle, the traction line is slowly pulled out from the same puncture hole and eventually connected to the fixation device outside the body, thereby achieving effective traction of the abdominal structures that obstruct the surgery.
[0023] This design not only avoids potential interference with other surgical instruments when the traction suture passes through the trocar opening, ensuring the smooth progress and final outcome of the surgery, but also greatly simplifies the process of judging and guiding the traction suture position by selecting the puncture site close to the traction device, reducing direct contact between the traction suture and the patient's internal tissues, thereby alleviating the patient's surgical pain and postoperative recovery burden.
[0024] Furthermore, medical staff can flexibly adjust the puncture position of the puncture needle relative to the traction device according to the actual needs of the surgery. This flexibility ensures that when the traction device pulls on the structural tissue, it can accurately and completely avoid the structural tissue that is obstructing the surgery from the surgical position, avoiding the risks and inconveniences that may be caused by repeated pulling and adjusting the position, and further improving the efficiency and safety of the surgery.
[0025] Furthermore, it is worth mentioning that the puncture site created by the puncture needle on the patient's skin is extremely small. This not only reduces the degree of trauma to the patient but also greatly reduces the difficulty and risk of postoperative healing, providing a strong guarantee for the patient's rapid postoperative recovery.
[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0028] Figure 1 This shows a schematic diagram of the tension member from one perspective in one embodiment of the present invention;
[0029] Figure 2 A schematic diagram of the tension member from one perspective is shown in another embodiment of the present invention;
[0030] Figure 3 It shows Figure 2 A cross-sectional view of the structure of the middle tension member from one perspective;
[0031] Figure 4 This diagram illustrates a schematic view of the puncture needle in one embodiment of the present invention.
[0032] Figure 5 This diagram shows a schematic view of the fixed base in one embodiment of the present invention.
[0033] Figure 6 This shows a schematic diagram of the tension member from one perspective in yet another embodiment of the present invention;
[0034] Figure 7 A cross-sectional view of the puncture needle in one embodiment of the present invention is shown.
[0035] Explanation of key component symbols:
[0036] 100-Pull member; 200-Pull hook; 300-Pull clamp; 310-Pull body; 320-First clamping member; 321-First clamping part; 330-Second clamping member; 331-Telescopic rod; 332-Clamping spring; 333-Connecting rod; 334-Second clamping part; 400-Pull line; 500-Punch needle; 510-Needle tip; 520-Limiting part; 521-First limiting rod; 522-Second limiting rod; 530-Tension rope; 600-Fixing seat; 610-Connecting ring; 710-Sliding block; 720-Control rope. Detailed Implementation
[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.
[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.
[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0042] In related technologies, multi-port laparoscopic surgery or single-port laparoscopic surgery requires the creation of small incisions in the abdominal wall (abdominal skin and muscle layers) during the procedure to insert surgical instruments. These incisions are called trocar openings. A trocar is a surgical instrument consisting of a sharp puncture needle and an outer cannula, used to create a passage in the abdomen for inserting endoscopes and other surgical instruments.
[0043] In laparoscopic surgery, surgeons use a trocar to create a passage through the abdominal wall at a selected location. After the puncture, the sharp end of the trocar is removed, leaving the outer cannula as a channel for subsequent surgical instruments. Through these trocar openings, surgeons can insert a laparoscope (a long, thin instrument with a camera) and other surgical tools into the abdominal cavity for diagnostic or therapeutic procedures. The number and location of the trocar openings depend on the specific type of surgery and the procedures to be performed.
[0044] Combination Figure 1 , Figure 2 , Figure 4 As shown, an embodiment of this application provides a laparoscopic surgery auxiliary structure for assisting in traction of intra-abdominal structures that obstruct surgery. The laparoscopic surgery auxiliary structure includes a traction member 100 and a puncture needle 500.
[0045] One end of the traction member 100 is connected to a traction line 400. The end of the traction member 100 opposite to the traction line 400 is provided with a traction portion. The traction member 100 is used to enter the patient's abdominal cavity through the trocar opening and to connect with the structures and tissues that obstruct the surgery using the traction portion. The puncture needle 500 has a needle tip 510 and a limiting portion 520 is provided on the side wall of the puncture needle 500 near the needle tip 510. The puncture needle 500 is used to puncture the patient's skin near the traction member 100, enter the patient's abdominal cavity, and form a puncture hole. During this process, the limiting portion 520 is used to guide and connect with the portion of the traction line 400 near the traction member 100. Then, the puncture needle 500 is withdrawn from the puncture hole, and the traction line 400 is simultaneously guided and pulled out from the puncture hole.
[0046] The laparoscopic surgery aid structure provided in this embodiment can assist surgeons in performing laparoscopic surgery on patients. If the complex vascular network or other structures inside the patient's abdominal cavity obstruct or block the predetermined surgical position, medical staff can first use a clamping instrument to clamp the traction component 100 and insert it into the patient's abdominal cavity through the trocar port, and adjust its position to make it as close as possible to the structures that are causing surgical obstacles.
[0047] Next, the traction part of the traction component 100 will establish a connection with these tissue structures. Subsequently, on the patient's skin near the traction component 100, medical personnel will perform a new puncture operation, using the puncture needle 500 to re-enter the patient's abdominal cavity, creating a new puncture hole.
[0048] Once the puncture needle 500 successfully penetrates the abdominal cavity, its limiting part 520 is guided and connected to the traction line 400 on the traction member 100. At this time, the puncture needle 500 can be safely withdrawn from the puncture hole. Simultaneously, the traction line 400, guided by the puncture needle 500, is pulled out from the same puncture hole and ultimately connected to the fixation device externally, thereby achieving effective traction of the abdominal cavity structures that obstruct surgery.
[0049] This design not only avoids potential interference between the traction suture 400 and other surgical instruments when it passes through the trocar opening, ensuring the smooth progress and final outcome of the surgery, but also simplifies the process of judging and guiding the position of the traction suture 400 by selecting the puncture site close to the traction element 100, reducing direct contact between the traction suture 400 and the patient's internal tissues, thereby alleviating the patient's surgical pain and postoperative recovery burden.
[0050] Furthermore, medical staff can adjust the puncture position of the puncture needle 500 relative to the traction member 100 according to the actual needs of the surgery. This flexibility ensures that when the traction member 100 pulls on the structural tissue, it can accurately and completely avoid the structural tissue that obstructs the surgery from the surgical position, avoiding the risks and inconveniences that may be caused by repeated pulling and adjusting the position, and further improving the efficiency and safety of the surgery.
[0051] Furthermore, it is worth mentioning that the puncture site created by the 500 needle on the patient's skin is very small. This not only reduces the degree of trauma to the patient, but also greatly reduces the difficulty and risk of postoperative healing, providing a strong guarantee for the patient's rapid postoperative recovery.
[0052] In some specific embodiments, the traction member 100 includes a traction hook 200 or a traction clamp 300. The traction hook 200 is used to hook onto structures within the patient's abdominal cavity that may obstruct surgery. Its design is intended to precisely hook onto hard-to-reach or easily slippery structures within the patient's abdominal cavity through its unique curved shape. During surgery, when encountering structures such as blood vessels, ligaments, or other soft tissues that may obstruct the surgical path, the traction hook 200 can gently but firmly penetrate and hook these tissues with its sharp tip, thus providing the surgeon with a stable traction point without damaging surrounding tissues. The traction clamp 300 is used to grasp structures within the patient's abdominal cavity that may obstruct surgery. The design of the traction clamp 300 focuses more on grasping relatively hard or large structures within the patient's abdominal cavity through its robust jaws. These tissues may include, but are not limited to, muscles, bone fragments, or certain abnormally proliferating masses. The jaws of the traction forceps 300 are usually equipped with a fine adjustment mechanism, which allows doctors to adjust the clamping force and angle according to actual needs during the operation, ensuring that the clamping process is both stable and safe.
[0053] By employing these two different traction elements 100, surgeons have greater options and flexibility when facing various surgical situations. Whether dealing with small and fragile tissue structures or large and rigid obstacles, the most suitable traction element 100 can be found, ensuring that traction operations during surgery are both precise and efficient. This design not only improves the success rate of surgery but also significantly reduces the risk of complications caused by improper traction, providing more favorable conditions for the patient's postoperative recovery.
[0054] In some specific embodiments, one end of the pull hook 200 is connected to the pull line 400, and the other end of the pull hook 200 is bent to form a pull part. The diameter of the pull hook 200 gradually decreases from the hook body to the hook tip, making it easier to connect and link with structural components.
[0055] In some specific embodiments, the retraction hook 200 is ingeniously and practically designed, with its retraction portion formed by bending a fine needle-shaped structural component using a specific process. This design allows the retraction portion to precisely hook the peritoneum and perform stable and effective traction. During surgery, this stable traction effectively prevents peritoneal detachment, thereby greatly ensuring the reliability and safety of the surgical procedure. Of course, the design of the retraction hook 200 is not limited to a needle-shaped structural component; to meet the needs of different surgical sites, the design of the retraction portion has also been adjusted accordingly. For example... Figure 6As shown, in some embodiments, the traction portion of the traction hook 200 is formed by bending a flat structure. This design makes the traction portion more suitable for traction of more fragile and important areas such as the ureter or vascular tissue. By gently and steadily tractioning these sensitive tissues, unnecessary damage to them during surgery can be effectively avoided, further improving the reliability and safety of this embodiment in practical applications.
[0056] In some specific embodiments, the traction forceps 300 includes a forceps body 310, a first clamping member 320, and a second clamping member 330. The first clamping member 320 is fixedly disposed on the forceps body 310, and the second clamping member 330 is hinged to the forceps body 310. The first clamping member 320 and the second clamping member 330 are respectively provided with a first clamping portion 321 and a second clamping portion 334. The second clamping member 330 can swing relative to the first clamping member 320 and drive the second clamping portion 334 to move closer to or away from the first clamping portion 321. The first clamping portion 321 and the second clamping portion 334 cooperate to form a traction portion, thereby realizing the clamping connection of the obstructive structures and tissues in the patient's abdominal cavity, and the connection is reliable.
[0057] like Figure 3 As shown, a telescopic rod 331 is inserted inside the clamp body 310, and a connecting rod 333 is hinged to the end of the telescopic rod 331 near the second clamping member 330. The other end of the connecting rod 333 is also hinged to the second clamping member 330. This design allows the telescopic rod 331 to extend or retract relative to the clamp body 310, thereby driving the second clamping member 330 to swing relative to the first clamping member 320 through the transmission of the connecting rod 333.
[0058] Furthermore, a clamping spring 332 is provided between the end face of the telescopic rod 331 away from the second clamping member 330 and the clamp body 310. The presence of this clamping spring 332 allows the telescopic rod 331 to remain relatively stationary with the clamp body 310 when no external force is applied. Simultaneously, due to the elastic force of the clamping spring 332, the second clamping portion 334 of the second clamping member 330 and the first clamping portion 321 of the first clamping member 320 will come into contact and cooperate, forming a stable clamping structure. This design not only ensures the stability of the traction forceps 300 when not in use but also provides reliable protection for clamping operations during surgery.
[0059] Additionally, it is worth mentioning that the traction wire 400 is connected to the end of the telescopic rod 331 furthest from the second clamping member 330. This allows the surgeon to control the extension and retraction of the telescopic rod 331 during surgery by pulling the traction wire 400, thereby adjusting the engagement between the second clamping member 330 and the first clamping member 320.
[0060] Specifically, the elastic force provided by the clamping spring 332 is greater than the traction force pulling the tissue structure. This design ensures that during the operation, even if the tissue structure is pulled by the traction line 400, the clamping spring 332 can maintain sufficient elasticity, allowing the second clamping part 334 and the first clamping part 321 to fit together tightly and stably clamp the tissue structure.
[0061] In practical use, the doctor first uses a clamping instrument to hold the clamp body 310 of the traction forceps 300 and inserts it into the patient's body. When the traction forceps 300 approaches the tissue structure to be pulled, the doctor can pull the traction line 400, causing the telescopic rod 331 to extend and retract relative to the clamp body 310 under the elastic force of the clamping spring 332. This movement will cause the second clamping part 334 to separate from the first clamping part 321, allowing the tissue structure to be smoothly placed between them. Then, the doctor releases the traction line 400, at which point the elastic force of the clamping spring 332 will cause the second clamping part 334 to re-enter and engage with the first clamping part 321, thereby stably clamping the tissue structure. This operation process is not only convenient and efficient, but also greatly improves the success rate and safety of the surgery.
[0062] In some specific embodiments, the first clamping part 321 is provided with a first friction tooth, and the second clamping part 334 is provided with a second friction tooth corresponding to the first friction tooth. The first friction tooth and the second friction tooth can mesh with each other, which facilitates improving the clamping reliability of the traction clamp 300 on the tissue structure.
[0063] In some specific embodiments, the puncture needle 500 is provided with a first limiting rod 521 and a second limiting rod 522 on the side wall near the needle tip 510. One end of the first limiting rod 521 and the second limiting rod 522 are connected to the side wall of the puncture needle 500. The axes of the first limiting rod 521 and the second limiting rod 522 are at an acute angle to the axis of the puncture needle 500. The ends of the first limiting rod 521 and the second limiting rod 522 away from the ends of the puncture needle 500 tend to move closer to each other. This arrangement makes the space between them an ideal channel for the traction wire 400. After the puncture needle 500 is inserted into the patient's body, the position is adjusted so that the traction suture 400 falls between the first limiting rod 521 and the second limiting rod 522. As the puncture needle 500 begins to retract from the puncture hole, the traction suture 400 moves smoothly along with the puncture needle 500, guided by the first and second limiting rods 521 and 522. This design not only greatly simplifies the surgical procedure but also significantly improves the safety and efficiency of the surgery. Finally, when the puncture needle 500 is completely removed from the puncture hole, the traction suture 400 is also smoothly pulled out, thus completing the process of pulling out the traction suture 400.
[0064] In some specific embodiments, the axes of the first limiting rod 521, the second limiting rod 522, and the puncture needle 500 are all located in the same plane. Since the traction line 400 and the puncture needle 500 are inserted into the patient's skin at different positions, there is an angle between the traction line and the axis of the puncture needle 500. Through the above arrangement, after the traction line 400 falls between the first limiting rod 521 and the second limiting rod 522, during the process of being guided by the retraction of the puncture needle 500, the traction line 400 is always positioned at the angle between the first limiting rod 521 or the second limiting rod 522 and the outer wall of the puncture needle 500. This ingenious arrangement not only ensures the stability and continuity of the traction line 400 during the guidance process, but more importantly, it effectively prevents the traction line 400 from accidentally slipping or deviating from the predetermined path during the guidance process.
[0065] In some specific embodiments, the first limiting rod 521 and the second limiting rod 522 are respectively hinged to the side wall of the puncture needle 500, and a coil spring is provided at the hinge point. A tension rope 530 is connected between the side wall of the first limiting rod 521 and the side wall of the second limiting rod 522. Under the action of the coil spring, the first limiting rod 521 and the second limiting rod 522 are offset away from the puncture needle 500, and the tension rope 530 is tensioned. This arrangement allows the tension line 530 to fall into the first limiting rod 521. After the first limiting rod 521 and the second limiting rod 522 are connected, the tension rope 530 will be pushed first, thereby driving the first limiting rod 521 and the second limiting rod 522 to swing in a direction closer to each other, further limiting the traction line 400 and further preventing the traction line 400 from accidentally slipping or deviating from the predetermined path during the guidance process; at the same time, due to the contraction of the first limiting rod 521 and the second limiting rod 522 during the retraction of the puncture needle 500, it can effectively prevent scratches to the patient's skin and thus prevent the puncture hole from enlarging.
[0066] like Figure 7 As shown, in some specific embodiments, a sliding block 710 is installed at the end of the puncture needle 500 away from the needle tip 510. The sliding block 710 can slide relative to the puncture needle 500. A control rope 720 is threaded through the puncture needle 500. One end of the control rope 720 is connected to the sliding block 710, and the other end of the control rope 720 is connected to the tension rope 530. Specifically, when the traction line 400 is retracted outside the patient's body using the puncture needle 500, the first limiting rod can be driven not only by the tension of the tension rope 530. 521. The second limiting rod 522 limits the traction line 400. Medical staff can also simultaneously drive the sliding block 710 to slide relative to the puncture needle 500, thereby using the control rope 720 to pull the tension rope 530, thereby driving the first limiting rod 521 and the second limiting rod 522 to shift towards the puncture needle 500 at the same time. This provides a more reliable limit on the traction rope and reduces the obstruction caused during the retraction of the puncture needle 500, thereby further avoiding scratches to the patient's skin and enlarging the puncture hole, and reducing the pain caused to the patient.
[0067] In some specific embodiments, the distance between the first limiting rod 521 and the needle tip 510 is less than the distance between the second limiting rod 522 and the needle tip 510. The length of the first limiting rod 521 is greater than the length of the second limiting rod 522, and the width of the first limiting rod 521 is greater than the width of the second limiting rod 522. The increased length allows the first limiting rod 521 to better guide and shield during puncture, while the increased width further enhances its shielding effect and structural stability. This design brings significant advantages in actual operation. When the puncture needle 500 punctures the patient's skin, because the first limiting rod 521 is closer to the needle tip 510 and is larger, it can effectively shield the second limiting rod 522 located behind it. In this way, even if the patient's skin undergoes slight movement or deformation during puncture, the second limiting rod 522 is unlikely to directly contact the skin, thereby greatly reducing the risk of skin abrasion caused by the second limiting rod 522.
[0068] In some specific embodiments, one end of the tension cord 530 is connected to the end of the second limiting rod 522 away from the puncture needle 500, and the other end of the tension cord 530 is connected to the middle of the first limiting rod 521. This arrangement is advantageous because when the first limiting rod 521 contacts the puncture hole during skin puncture with the puncture needle 500, it will contract towards the puncture needle 500, and the tension cord 530 will drive the second limiting rod 522 to contract towards the puncture needle 500, further reducing the probability of skin abrasion. Furthermore, the ends of the first limiting rod 521 and the second limiting rod 522 away from the puncture needle 500 are rounded surfaces.
[0069] like Figure 5 As shown, in some specific embodiments, the laparoscopic surgical auxiliary structure also includes a fixation seat 600, which is fixedly mounted on the operating table by means of magnetic attraction, snap-fit connection, etc. The fixation seat 600 has a connecting part, and the fixation seat 600 is connected to the traction line 400 through the connecting part, so as to ensure the traction stability of the traction member 100.
[0070] In some specific embodiments, the fixing base 600 is provided with a connecting ring 610. Multiple connecting rings 610 are evenly distributed around the circumference of the fixing base 600. The connecting rings 610 are used to form a connecting part, which makes it convenient for medical staff to simultaneously wind and connect multiple traction wires to the corresponding connecting rings 610, making the operation convenient.
[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0072] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A laparoscopic surgical aid structure for assisting in the retraction of obstructive structures within the patient's abdominal cavity, characterized in that, include: A traction member (100) is provided with a traction line (400) at one end and a traction part at the end of the traction member (100) away from the traction line (400). The traction member (100) is used to enter the abdominal cavity of the patient through the trocar opening and to connect with the structures and tissues that obstruct the surgery using the traction part. A puncture needle (500) has a needle tip (510) and a limiting portion (520) is provided on the side wall of the puncture needle (500) near the needle tip (510); the puncture needle (500) is used to puncture the patient's skin near the traction member (100), enter the patient's abdominal cavity and form a puncture hole; during this process, the limiting portion (520) is guided and connected to the portion of the traction line (400) near the traction member (100), and then the puncture needle (500) is withdrawn from the puncture hole, while the traction line (400) is guided and pulled out from the puncture hole; The puncture needle (500) has a first limiting rod (521) and a second limiting rod (522) on its side wall near the needle tip (510). One end of the first limiting rod (521) and the second limiting rod (522) are connected to the side wall of the puncture needle (500). The axes of the first limiting rod (521) and the second limiting rod (522) are at an acute angle to the axis of the puncture needle (500). The ends of the first limiting rod (521) and the second limiting rod (522) that are away from the puncture needle (500) are close to each other. The first limiting rod (521) and the second limiting rod (522) are respectively hinged to the side wall of the puncture needle (500), and a coil spring is provided at the hinge point. A tension rope (530) is connected between the side wall of the first limiting rod (521) and the side wall of the second limiting rod (522). Under the action of the coil spring, the first limiting rod (521) and the second limiting rod (522) are offset away from the puncture needle (500) and the tension rope (530) is tensioned.
2. The laparoscopic surgical aid structure according to claim 1, characterized in that, The traction component (100) includes a traction hook (200) or a traction clamp (300), wherein the traction hook (200) is used to hook onto the patient's abdominal cavity structures that obstruct the surgery, and the traction clamp (300) is used to grasp the patient's abdominal cavity structures that obstruct the surgery.
3. The laparoscopic surgical aid structure according to claim 2, characterized in that, One end of the pull hook (200) is connected to the pull line (400), and the other end of the pull hook (200) is bent to form a pull part. The diameter of the pull hook (200) gradually decreases from the hook body to the hook tip.
4. The laparoscopic surgical aid structure according to claim 2, characterized in that, The traction clamp (300) includes a clamp body (310), a first clamping member (320), and a second clamping member (330). The first clamping member (320) is fixedly disposed on the clamp body (310), and the second clamping member (330) is hinged to the clamp body (310). The first clamping member (320) and the second clamping member (330) are respectively provided with a first clamping part (321) and a second clamping part (334). The second clamping member (330) can swing relative to the first clamping member (320) and drive the second clamping part (334) to move closer to or further away from the first clamping part (321). The first clamping part (321) and the second clamping part (334) cooperate to form a traction part.
5. The laparoscopic surgical aid structure according to claim 4, characterized in that, The first clamping part (321) is provided with a first friction tooth, and the second clamping part (334) is provided with a second friction tooth corresponding to the first friction tooth. The first friction tooth and the second friction tooth can mesh with each other.
6. The laparoscopic surgical aid structure according to claim 1, characterized in that, The axes of the first limiting rod (521), the second limiting rod (522), and the puncture needle (500) are all located in the same plane.
7. The laparoscopic surgical aid structure according to claim 6, characterized in that, The distance between the first limiting rod (521) and the needle tip (510) is less than the distance between the second limiting rod (522) and the needle tip (510), and the length of the first limiting rod (521) is greater than the length of the second limiting rod (522).
8. The laparoscopic surgical aid structure according to claim 1, characterized in that, The end of the puncture needle (500) away from the needle tip (510) is equipped with a sliding block (710), which can slide relative to the puncture needle (500). A control rope (720) is threaded through the puncture needle (500), one end of the control rope (720) is connected to the sliding block (710), and the other end of the control rope (720) is connected to the tension rope (530).