Minimally invasive organ suspension device to expand surgical space

Abstract

This invention relates to the field of surgical instruments, and more particularly to a minimally invasive organ suspension device that expands surgical space. The organ suspension device includes an external magnetic suspension device and an internal detachable clamp; the magnetic suspension device includes a strong magnetic system (15), and an mounting rod sleeve (14) is arranged above the strong magnetic system (15); the detachable clamp includes a dedicated internal arc-shaped clamp body (1). This invention's minimally invasive organ suspension device uses external magnetic attraction in conjunction with an internal detachable clamp to achieve minimally invasive organ suspension, minimizing tissue traction trauma during surgery and reducing postoperative complications. It eliminates the need for suturing organs and external punctures, avoiding organ damage and the risk of infection at puncture wounds.

Description

Technical Field

[0001] This invention relates to the field of surgical instruments, and more particularly to a minimally invasive organ suspension device that expands the surgical space. Background Technology

[0002] Currently, abdominal surgery is rapidly evolving towards minimally invasive and refined procedures. This trend has significantly improved postoperative recovery and reduced surgical trauma and complications. Specifically, this evolution towards minimally invasive techniques exhibits a clear gradient: from the large incisions of ten to twenty centimeters used in traditional open surgery, to the use of two to three 1-2 centimeter diameter incisions, where the surgical procedure is completed through the coordinated use of endoscopes and specialized laparoscopic instruments; and further to the increasingly popular single-port minimally invasive surgery in recent years, where the entire surgical process can be completed through a single incision, further reducing surgical trauma and improving postoperative aesthetics.

[0003] Looking at the specific changes in surgical wounds, the evolution path is more intuitive: traditional open surgery requires cutting through layers of skin, subcutaneous tissue, abdominal muscles, etc., resulting in large trauma, more bleeding, and slower recovery; subsequent multi-port minimally invasive surgery reduced the wound to 2-3, with smaller and more dispersed wounds, significantly reducing trauma; while single-port surgery further integrated the wound, retaining only one operating port, pushing the minimally invasive concept to a new level.

[0004] During various minimally invasive surgeries, doctors cannot directly observe the surgical site with the naked eye. They rely on an endoscope to transmit images of the surgical area to a monitor in real time, and then perform precise operations based on the images on the monitor. However, because the organs in the abdominal cavity are naturally stacked, organs such as the intestines, bladder, and uterus obscure each other, often obscuring the target surgical site (such as diseased tissue or the organ to be removed), making it impossible to clearly see. This places extremely high demands on the doctor's spatial imagination ability—the doctor must accurately determine the three-dimensional spatial relationship of the organs based on two-dimensional images to avoid damaging surrounding normal tissues during the operation, which has become one of the core challenges of minimally invasive surgery.

[0005] like Figure 5 As shown, only by effectively suspending the stacked, obscuring organs in a specific way can the target organs requiring surgical manipulation be fully exposed (the areas marked by arrows in the diagram are the target areas for surgery). Taking pelvic or lower abdominal surgery as an example, by suspending and fixing the bladder and uterus upwards, the intestines, which were originally obscured by them, can be removed from the obscured area and clearly presented in the endoscopic field of vision, providing a clear visual basis for the surgical operation and ensuring that the surgery can be carried out smoothly.

[0006] In single-port surgery, because there is only one operating port, laparoscopic instruments and endoscopes must enter the abdominal cavity through the same incision. This significantly reduces the operating space between instruments, greatly increasing the probability of mutual interference and further enhancing the difficulty of the surgery. This highly complex procedure places increasing demands on the surgeon's professional skills, fine motor skills, and spatial reasoning, requiring young doctors to undergo longer periods of clinical practice and training to master single-port surgical techniques, thus significantly extending the training period for young doctors.

[0007] Therefore, expanding the surgical operating space and effectively exposing deep tissues is crucial for improving visual clarity during surgery, reducing surgical difficulty, minimizing surgical complications, and shortening the training period for young doctors. Against this backdrop of industry demand and technological advancement, the domestic and international medical fields have extensively undertaken the research and development of a series of novel supporting medical devices to address this core pain point, attempting to overcome existing bottlenecks through technological innovation.

[0008] Currently, the main technique used in clinical practice to achieve effective exposure of deep tissues involves suspending organs that are obstructing the surgical site. By changing the spatial position of these organs, the obstruction of the target area is removed, thereby obtaining a clear surgical field. Through years of clinical practice and technological research, the field of organ suspension has developed several mature methods and yielded numerous patented innovative device designs, providing diverse options for clinical surgery.

[0009] Current mature solutions or designs in the industry mainly revolve around two core ideas, as follows: One method is direct suture suspension. The procedure involves: first, the surgeon precisely locates the organs requiring suspension, such as the liver and intestines, within the abdominal cavity; then, specialized sutures are used to suture and fix the target organ. After suturing, the free end of the suture is pulled out through a pre-drilled, extremely small incision (usually no more than 1 cm in diameter) in the abdomen. Finally, the target organ is suspended and fixed in a suitable position by externally pulling the suture, thus removing its obstruction of the surgical site. The main advantages of this method are its relative simplicity and low cost, but it can cause micro-trauma to the body surface (the small incision for pulling out the suture) and organ damage (damage to the organ surface during suturing).

[0010] Secondly, there is the tissue clip suspension method. The core of this method is the use of specialized suspension instruments. The specific procedure is as follows: A tissue clip made of biocompatible material such as metal is fabricated. The surgeon uses laparoscopic instruments to precisely clamp the tissue clip onto the surface of the organ requiring suspension within the abdominal cavity. After fixation, a thin rod connected to the tissue clip is inserted through the abdominal skin. The other end of the rod is connected to an external handheld device. By manipulating the external handheld device, the surgeon pulls the thin rod, moving the tissue clip and suspending the target organ in a suitable position, thus exposing the organ to the external view. The main advantage of this method is that it only creates a tiny puncture wound on the abdomen (where the thin rod penetrates), requiring only one stitch for gradual healing post-surgery. It does not cause direct damage to the organs, only minor surface trauma.

[0011] Although the two existing organ suspension techniques are widely used in clinical practice and can solve the problem of deep tissue exposure to some extent, they still have significant technical drawbacks, mainly in terms of surgical trauma and labor costs, as detailed below: Regarding surgical trauma, both approaches have their drawbacks: If the suture suspension method is used, the suturing and fixation of organs will cause some damage to the surface of the organs during the suturing process, and the healing speed of organ tissues is relatively slow. Poor organ healing may occur after surgery, and sometimes even serious complications such as internal bleeding may occur, increasing the patient's postoperative recovery risk and pain. The metal clip suspension method is relatively gentle, only creating a very small puncture wound on the abdomen, which can be healed with a single stitch after surgery, without direct damage to organs. However, the puncture wound still poses a risk of infection. In the daily care environment of a general ward, the wound is easily exposed to bacteria and other contaminants. If not properly cared for, it is very easy to cause wound infection, which in turn affects the patient's postoperative recovery process.

[0012] Furthermore, both of these organ suspension methods share a common problem in actual surgical procedures: the need for an additional assistant. Specifically, while the surgeon is performing the procedure, an assistant is required to externally pull the sutures or manipulate the handheld ends of the tissue clips to maintain the organ's suspension. This not only increases the labor costs of the surgery, but more importantly, the assistant's position may interfere with the surgeon's view of the surgical field monitor, preventing the surgeon from obtaining the optimal viewing angle and potentially affecting the precision of the surgical procedure, thus increasing surgical risks.

[0013] The core idea of ​​CN114129208A is a combination design of an in vivo magnetic tissue traction device (traction clamp and magnetic component) and an external magnetic supply device and surgical forceps. The magnetic component and traction clamp are an integrated structure in vivo. The clamping operation of the traction clamp is completed by the surgical forceps. Its magnetic force is only the driving force for the movement of the in vivo device. The overall design still relies on the cooperation between the surgical forceps and the in vivo magnetic component. It does not achieve the extreme simplification and lightweighting of the in vivo execution component, nor does it solve the core problems of traditional suspension methods such as external puncture, human assistance, and limited operating space. The two are completely different in the core logic and technical path of minimally invasive design.

[0014] The internal components are an integrated structure of traction clips and magnetic components, without independent detachable clip design. The connection structure between the magnetic components and traction clips occupies the operating space in the abdominal cavity. When used for single-port minimally invasive surgery, it is prone to mutual interference with laparoscopic instruments and endoscopes, exacerbating the problem of limited operating space in single-port surgery. The operation of the traction clamp is highly dependent on the engagement of a special surgical forceps. The surgical forceps need to be inserted deep into the body to engage with the traction clamp. This operation is cumbersome, and the surgical forceps themselves will further occupy the operating space inside the body, increasing the difficulty of the surgical operation. The lack of a flexible and adjustable support design for the external magnetic supply device makes it difficult to precisely adjust the height and position of the device in actual use. It also makes it impossible to flexibly adjust the traction force and organ suspension position according to surgical needs. Furthermore, it is highly likely that an additional assistant will be needed to operate the magnetic supply device or surgical forceps, increasing labor costs and potentially interfering with the surgeon's field of vision. The clamping end of the traction clamp is designed with biting teeth. The rigid bite can easily cause compression or puncture damage to internal organs and tissues. In addition, the rotating connection structure between the magnetic component and the traction clamp has sharp edges and corners, which can easily scratch other tissues in the abdominal cavity. Although no additional penetrating holes are required, the in-body magnetic tissue traction device is an integrated, non-removable structure, making it difficult to recycle after use. Furthermore, it does not consider the reusability of the device through repeated sterilization, thus increasing the cost of medical consumables.

[0015] This invention focuses on the key technical challenge of effectively exposing deep tissues in minimally invasive abdominal surgery. Through in-depth research and innovative design, it aims to solve practical problems in current minimally invasive surgery, such as increased surgical difficulty and prolonged training period for doctors due to obstructed vision and limited operating space, and to provide a safer and more efficient solution for visual exposure in clinical surgery.

[0016] This case represents a further improvement on existing metal clip suspension methods. Summary of the Invention

[0017] Purpose of the invention: To provide a minimally invasive organ suspension device that can better expand the surgical space; the specific purpose is explained in the detailed implementation section for several substantial technical effects.

[0018] To achieve the above objectives, the present invention adopts the following technical solution: A minimally invasive organ suspension device that expands surgical space is characterized in that the organ suspension device includes an external suspension magnetic suction device and an internal detachable clamp. The suspension magnetic attraction device includes a strong magnetic system 15, and an installation rod sleeve 14 is arranged above the strong magnetic system 15; The detachable clamp includes a special internal curved clamp body 1. The end of the internal drilling curved clamp body has two clamping surfaces 2, which can clamp organs. There is a protrusion 3 on the clamping surfaces 2. The end of the clamp includes a forceps jaw 4 and a forceps jaw 5. The clamp can be operated by inserting forceps jaw 4 and forceps jaw 5 with surgical forceps.

[0019] A further technical solution of the present invention is that the suspension magnetic suction device includes a base 7, a support rod 8 is arranged on the base 7, a horizontal upper bracket 10 is arranged on the support rod 8, the upper bracket 10 includes an upper sleeve 11, an installation rod 13 is inserted into the upper bracket 10, a fixing bolt 12 passes through a hole on the upper sleeve 11 and can compress the installation rod 13, and a lower installation thread 9 is arranged below the installation rod 13; the lower installation thread 9 and the installation rod sleeve 14 are threadedly connected.

[0020] A further technical solution of the present invention is that the two clamping surfaces 2 contain friction patterns.

[0021] A further technical solution of the present invention is that the clip is made entirely of stainless steel and can be attracted by a strong magnetic system.

[0022] A further technical solution of the present invention is that a permanent magnet is arranged in the square shell of the strong magnetic system 15.

[0023] A further technical solution of the present invention is that an electromagnet is arranged in the square housing of the strong magnetic system 15, and the electromagnet can adjust the magnetic force by changing the current; that is, an electromagnet and a storage battery are arranged in the square housing, and the current knob of the storage battery is arranged on the housing.

[0024] A further technical solution of the present invention is that by loosening the fixing bolt 12, the height of the lower mounting thread 9 can be adjusted up and down.

[0025] A further technical solution of the present invention is that the edges of the clips are all circular, and they are disinfected before use.

[0026] A further technical solution of the present invention is that the clip comprises multiple clips.

[0027] The present invention, employing the above technical solution, offers the following advantages over existing technologies: The minimally invasive organ suspension device of the present invention utilizes external magnetic attraction combined with internal detachable clamps to achieve minimally invasive organ suspension. Intraoperative tissue traction is minimally invasive, reducing postoperative complications. No suturing of organs or external punctures is required, avoiding organ damage and the risk of puncture wound infection. The instrument's edges are smooth, and the clamping surface features non-interlocking, non-right-angled teeth, minimizing organ damage and ensuring stable clamping. Disinfection further reduces the possibility of infection. The external support-type magnetic attraction device allows for flexible height and position adjustment, enabling single-person operation without additional assistants, saving manpower and not interfering with the surgical field of vision. Only lightweight clamps remain internally, with no unnecessary rods, significantly freeing up surgical operating space, reducing instrument interference, and adapting to single-port minimally invasive surgery. Magnetic attraction provides flexible, non-contact traction, combined with permanent magnet or electromagnetic control, allowing for precise adjustment of suspension force and position, avoiding rigid damage, and improving the safety, accuracy, and operational efficiency of laparoscopic surgery. Attached Figure Description

[0028] To further illustrate the present invention, the following description is provided in conjunction with the accompanying drawings: Figure 1 This is a schematic diagram of the external device. Figure 2 A schematic diagram of the structure of the external device from another perspective; Figure 3 A schematic diagram of the internal magnetic clamp structure; Figure 4 This is a structural diagram of an external assisted scaffold; Figure 5 This is a schematic diagram illustrating the requirement for layered suspension of organs in existing technologies. The components include: 1. In-body arc-shaped clamp body; 2. Clamping surface; 3. Protrusion; 4. Clamping jaw one; 5. Clamping jaw two; 6. Torsion spring; 7. Base; 8. Support rod; 9. Lower mounting thread; 10. Upper bracket; 11. Upper collar; 12. Fixing bolt; 13. Mounting rod; 14. Mounting rod sleeve; 15. Strong magnetic system. Detailed Implementation

[0029] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present 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 the present invention. In addition, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal communication of two components. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood according to the specific circumstances.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] This patent provides multiple parallel solutions; the different descriptions represent improved solutions or parallel solutions based on the basic solution. Each solution has its own unique characteristics. Furthermore, the technical features involved in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other. Fixing methods not described herein can be any type of fixing, such as threaded fixing, bolt fixing, or adhesive bonding.

[0032] A minimally invasive organ suspension device that expands surgical space is characterized in that the organ suspension device includes an external suspension magnetic suction device and an internal detachable clamp. The suspension magnetic attraction device includes a strong magnetic system 15, and an installation rod sleeve 14 is arranged above the strong magnetic system 15; The detachable clamp includes a dedicated internal curved clamp body 1. The end of the internal drilling curved clamp body has two clamping surfaces 2, which can clamp organs. A protrusion 3 is located on the clamping surfaces 2. The end of the clamp includes a forceps jaw 4 and a forceps jaw 5. The clamp can be operated by inserting forceps jaw 4 and forceps jaw 5 with surgical forceps. The substantial technical effects and implementation process, i.e., basic functions and non-obvious aspects, are as follows: This invention relates to the field of medical device technology, specifically to the field of medical auxiliary devices for laparoscopic surgery. This invention aims to complete organ suspension operations through minimally invasive methods and minimize additional personnel support. We still follow the previous approach with metal clamps. The core issue to be addressed is how to achieve traction with metal clamps without using an abdominal incision. This invention solves this problem by using magnetic attraction. After choosing magnetic attraction, the key issues to be further addressed are the opening and closing control of the clamp, and how to place the clamp into the body through a minimally invasive operating hole and how to retrieve it smoothly after use.

[0033] The clamps are designed with a circular outline to minimize sharp contact with other internal organs and prevent abrasions. Magnets are installed inside the clamps for subsequent external magnetic suspension of the organs. The two clamping flaps are connected by torsion springs, maintaining a closed state under no-force conditions to ensure clamping stability. The clamping flaps have internal grooves or teeth to increase the clamping force on the organs; specifically, these grooves (teeth) are non-interlocking and all are non-right-angled. The number of teeth should be limited. Clamping tests have verified that this design minimizes organ damage due to its small number of teeth, better grip, and lower damage, while maintaining a superior clamping force compared to similar designs. The clamp has an opening and closing control flap in the middle. After the clamp is placed into the body through the surgical channel, the opening and closing flap is opened by using the surgical forceps. Once it is clamped in the appropriate position on the organ, the surgical forceps are released, and the clamp automatically snaps into the organ under the action of the torsion spring, completing the clamping operation. After use, the opening and closing flap is opened again by using the surgical forceps to release the clamped organ. Then, the clamp is taken out of the body by the surgical forceps, so that the clamp can be recycled and reused or properly disposed of.

[0034] Animal experiments validated that the internal organs of dogs / pigs are similar in size to those of humans, and their anatomical structures are highly consistent with those of humans in hysterectomy, colorectal resection, gastrectomy, and hepatectomy / cholecystectomy. Therefore, dogs / pigs were selected as experimental subjects to simulate clinical surgery. The experimental procedure was as follows: The umbilicus was selected as the observation port, CO2 pneumoperitoneum was established, and a trocar and laparoscope were inserted to explore the internal organs. A 1cm incision was made below the left costal margin, a 10mm trocar was placed, and a separable clamp was inserted to clamp the gallbladder, stomach wall, segments of the small intestine and colon, uterus and adnexa. The position of the external strong magnetic system 15 was adjusted, and the direction of change and traction effect after the clamps clamped the tissues were observed. The animals were euthanized at the end of the experiment (immediately after surgery). Dissection and tissue sampling were arranged according to experimental needs. Examination revealed that the surface of the suspended tissue was smooth, the suspension force was moderate, and no damage to the suspended tissue was observed, verifying the safety and effectiveness of the invention.

[0035] As a further improvement, the suspension magnetic suction device includes a base 7, a support rod 8 arranged on the base 7, and a horizontal upper bracket 10 arranged on the support rod 8. The upper bracket 10 includes a sleeve-shaped upper collar 11, and an installation rod 13 is inserted into the upper bracket 10. A fixing bolt 12 passes through a hole in the upper collar 11 and can compress the installation rod 13. A lower mounting thread 9 is arranged below the installation rod 13; the lower mounting thread 9 and the installation rod sleeve 14 are threadedly connected. The substantial technical effect and its implementation process, i.e., the basic function and non-obviousness, are as follows: As a further improvement, the first embodiment allows for handheld strong magnetic systems. This improvement is based on the ability to adjust the height vertically. The base 7 is placed on the side of the operating table to avoid obstructing the surgical field of vision. The height of the upper bracket 10 is raised, preferably higher than the shadowless lamp.

[0036] As a further improvement, the two clamping surfaces 2 feature a friction pattern. The clamp itself is made of stainless steel and can be attracted by a strong magnetic system. Alternatively, it could have teeth.

[0037] As a further improvement, a permanent magnet is arranged within the square housing of the strong magnetic system 15. The substantial technical effect and its implementation process, i.e., the basic function and non-obvious aspects, are as follows: As a parallel solution, an electromagnet is arranged within the square housing of the strong magnetic system 15. The electromagnet's magnetic force can be adjusted by changing the current; that is, an electromagnet and a battery are arranged within the square housing, with the battery's current knob located on the housing. During use, the current can be gradually adjusted to slowly increase the electromagnetic attraction.

[0038] As a further improvement, loosening the fixing bolt 12 allows for vertical adjustment of the height of the mounting thread 9. The vertical height can be adjusted.

[0039] The clips have rounded edges and are sterilized before use. Multiple clips are included.

[0040] The beneficial effects of this invention are that it can create minimal trauma while traction of tissues during surgery, effectively avoiding potential postoperative complications; it can effectively reduce unnecessary surface openings, further reducing surgical trauma; at the same time, the edges of the instruments in this invention are all designed with a smooth structure, which helps to protect internal tissues, reduce the risk of tissue damage during surgery, and improve the overall safety and precision of laparoscopic surgery.

[0041] The selection process revolves around four core components: battery, electromagnet, current adjustment knob, and torsion spring clamping force. It takes into account the clinical application scenario of the device (minimal organ suspension in abdominal minimally invasive surgery), technical requirements (adjustable magnetic force, stable and damage-free clamping, and portable operation), and safety standards verified by animal experiments. It balances practicality, stability, and medical safety. The specific selection parameters and basis are as follows.

[0042] The electromagnet is the core power component of the magnetic suspension, which needs to meet the requirements of minimally invasive traction in the abdominal cavity: the magnetic force can be precisely adjusted and effectively adsorb stainless steel clips (inside the body). The maximum magnetic force can meet the suspension and lifting of pelvic / lower abdominal organs (bladder, uterus, intestines, etc.), and the minimum magnetic force can achieve fine adjustment; at the same time, it is compatible with external square shell installation, small in size, low in power consumption, and matched with the battery.

[0043] Specific selection parameters Type: DC low voltage miniature suction cup electromagnet (medical grade sealed type), square housing (for adapter device strong magnetic system square housing), housing is made of 304 stainless steel and sealed to prevent liquid and dust intrusion in the surgical environment.

[0044] Rated voltage: DC12V / 24V (low voltage safety, avoiding the risk of leakage during surgery), DC12V is preferred (compatible with small batteries, reducing the overall weight of the device).

[0045] Magnetic force adjustment range: 5N-50N (Newtons), core working range 10N-30N.

[0046] 5N~10N: Suitable for light suspension of soft and vulnerable organs such as the intestines and stomach wall; 10N~30N: Suitable for routine suspension of large organs such as bladder and uterus (animal experiments have verified that this range can achieve stable suspension without tissue damage). 30N~50N: For emergency lifting in special situations such as organ adhesion, to avoid suspension failure due to insufficient magnetic force.

[0047] Adsorption surface size: 20mm×30mm (square), matching the effective adsorption area of ​​the stainless steel clip inside the body to ensure adsorption stability and prevent slippage.

[0048] Power consumption: ≤5W (low power consumption, extending battery life).

[0049] Stroke: ≤5mm (thin design reduces the volume of the strong magnetic system housing, facilitating the installation and adjustment of the external support).

[0050] Selection Supplement It must have slow-inhalation and slow-release characteristics to avoid sudden increases / decreases in magnetic force that could cause organs to be suddenly pulled or fall, resulting in tissue damage or sudden changes in the surgical field of view.

[0051] Battery selection Core Selection Criteria The electromagnet must be provided with an independent power supply that meets the requirements of continuous operation during surgery (1-3 hours for minimally invasive abdominal surgery, with redundancy), low voltage safety, compact size (suitable for square housings of strong magnetic systems, without increasing the difficulty of device operation), rechargeable (reusability requirement for medical devices), and stable output voltage to ensure accurate adjustment of the electromagnet's magnetic force.

[0052] Specific selection parameters Type: Medical-grade lithium polymer battery (soft pack), with no memory effect, high charge / discharge cycle life, and small size. Products that have passed medical electrical safety certification should be given priority.

[0053] Rated voltage: DC12V (directly matches 12V electromagnets, eliminating the need for additional transformer modules and simplifying the internal structure of the housing).

[0054] Rated capacity: 2000mAh~3000mAh.

[0055] Based on the maximum power consumption of 5W for electromagnets, a 2000mAh battery can provide continuous power for ≥4.8h, and a 3000mAh battery for ≥7.2h, both covering the typical duration of minimally invasive surgery and reserving more than twice the redundancy to avoid power interruption during surgery.

[0056] Size: Customized square housing to fit strong magnetic systems. Recommended maximum size ≤ 80mm × 60mm × 20mm, weight ≤ 100g, to ensure portability of the device.

[0057] Charging and Protection: Equipped with four protection circuits for overcharge, over-discharge, overcurrent, and short circuit. The charging interface adopts a medical-grade waterproof DC female socket, supports 5V / 2A fast charging, and has a full charge time of ≤2 hours.

[0058] Operating temperature: 0℃~40℃, suitable for the normal operating room environment temperature, avoiding capacity decay caused by low / high temperature.

[0059] Current adjustment knob selection Core Selection Criteria The knob is the operating component for adjusting the magnetic force of the electromagnet. It needs to meet the requirements of precise adjustment by doctors with one hand, clear gear positions, prevention of accidental touch, and compatible installation with the housing. The adjustment accuracy should be linearly matched with the magnetic force of the electromagnet, and the rotation angle should be moderate to avoid excessive rotation that could cause a sudden change in magnetic force.

[0060] Specific selection parameters Type: Medical-grade precision potentiometer knob (with scale and anti-slip), paired with a linear wound potentiometer (which, together with an electromagnet and a battery, forms an adjustment circuit to achieve linear synchronization of current and magnetic force).

[0061] Adjustment levels: stepless continuous adjustment + scale markings, scale range 0-10 levels, corresponding to 5N-50N magnetic force of the electromagnet, each level corresponds to a 5N magnetic force increment, which makes it easy for doctors to accurately control the adjustment range.

[0062] Mechanical properties: Rotation angle: 270° (covering all 0~10 levels, smooth rotation without jamming); Damping force: Moderate (no pressure when rotating with one hand, and avoids accidental adjustment due to touch during surgery); Knob cap: Made of silicone anti-slip design, 15mm~20mm in diameter, easy to operate while wearing gloves during surgery.

[0063] Electrical characteristics: The potentiometer has a rated power of ≥2W and a resistance of 10kΩ (linearity accuracy ±1%) to ensure accurate current adjustment and avoid magnetic deviation caused by resistance drift.

[0064] Installation method: Embedded installation on the surface of the square housing of the strong magnetic system, with a waterproof and dustproof rating of IP65 to prevent disinfectant and blood from seeping in during surgery.

[0065] Torsion spring bearing force selection Core Selection Criteria The torsion spring is the clamping power component of the detachable clip inside the body. It needs to meet the dual requirements of clamping stability and minimal invasiveness: the clamping force is sufficient to fix the organ (to prevent the clip from slipping when magnetically suspended) and will not cause pressure damage to the tissue on the surface of the organ due to excessive clamping force; at the same time, it is compatible with the arc-shaped clamp body design of the clip, which is closed in the natural state and can be easily opened when the surgical forceps are operated.

[0066] Specific selection parameters Type: Medical grade 304 stainless steel torsion spring (corrosion resistant, non-magnetic, avoids magnetic interference with external strong magnetic systems, and can be sterilized at high temperature and pressure to meet the requirements for reusable instruments).

[0067] Holding force (when the clamping surface is closed): 1.5N~3N, core working value 2N.

[0068] Lower limit 1.5N: Ensures effective clamping of soft organs such as the intestines and stomach wall, preventing slippage; Maximum 3N: Animal experiments have verified that this clamping force does not cause compressive damage to the surface tissues of abdominal organs. The friction pattern on the clamping surface can further increase the friction, so no greater clamping force is required. Special design: When the clamp opens at an angle of ≥30°, the rebound force of the torsion spring increases linearly, providing a moderate feel when the surgical forceps are opened, without increasing the difficulty of operation for doctors.

[0069] Size and fit: The torsion spring has a wire diameter of 0.8mm-1.0mm, a pitch diameter of 6mm-8mm, and an effective number of coils of 2-3. It is custom-fitted to fit the clamp jaws at the first / second mounting position, so that the two clamping surfaces fit tightly together without gaps in the natural state.

[0070] Fatigue life: ≥1000 opening and closing cycles, meeting the requirements for multiple disinfection and reuse of the clamps, and avoiding failure of the torsion spring due to frequent use.

[0071] Selection Supplement The connection between the torsion spring and the clip is embedded to prevent the torsion spring from falling out of the body, and the edges are blunted to prevent scratching abdominal tissues.

[0072] Selection of core supporting requirements All components must comply with relevant medical device standards. Components that come into contact with the human body (torsion springs, clips) must pass biocompatibility testing (ISO 10993) and be free from cytotoxicity and sensitization.

[0073] The electrical system consisting of electromagnets, batteries, and knobs must pass medical electrical safety testing (IEC 60601) to ensure electrical safety during surgery.

[0074] Metal components such as torsion springs and clips must withstand high-temperature and high-pressure sterilization (134℃, 0.2MPa, 30min), while electrical components such as batteries and electromagnets must be sealed to prevent water from entering during sterilization.

[0075] I. Addressing the surgical defects of existing technologies, such as organ damage caused by midline suspension and the risk of infection from external puncture wounds associated with metal clip suspension. Compared to the shortcomings of existing technologies, such as "thread suspension requires suturing organs, which can cause organ damage, and metal clip suspension requires a thin rod to penetrate the abdomen, creating a puncture wound and posing a risk of infection", this patent innovatively and non-obviously combines an external magnetic suspension device with a detachable clip inside the body in a minimally invasive design, achieving organ suspension operations without punctures or sutures. The implementation process of this invention is as follows: During surgery, surgical forceps are inserted into the forceps mouth 4 and forceps mouth 5 of the detachable clamp to operate the internal special arc-shaped clamp body 1. The target organ is clamped by two clamping surfaces 2 with friction patterns. The clamp is made of stainless steel and can be attracted by the strong magnetic system 15 of the external suspension magnetic attraction device. The internal clamp is attracted by the magnetic force of the external strong magnetic system 15, thereby suspending and lifting the organ. The whole process does not require suturing of the organ, thus avoiding the problem of organ damage caused by suture suspension from the root. At the same time, there is no need for thin rods to penetrate the abdomen and form puncture wounds. The internal organ is suspended only by external magnetic attraction, eliminating the risk of infection from external puncture wounds. In addition, the edges of the clamps are all round, further avoiding abrasion damage to internal tissues. The clamps are disinfected before use, which further reduces the possibility of infection during internal operation.

[0076] Second, both existing suspension methods require additional assistants, increasing labor costs and interfering with the surgeon's field of vision. Compared to the shortcomings of existing technologies, such as "both wire suspension and metal clip suspension require an assistant to maintain the organ suspension state, increasing labor costs, and the assistant's position can easily interfere with the surgeon's field of vision, affecting the accuracy of the surgery", this patent innovatively designs the suspension magnetic suction device as a flexible and adjustable external support structure, enabling a single person to complete the fixation and adjustment of organ suspension without additional human assistance. The implementation process of this invention is as follows: The base 7 of the suspension magnetic suction device provides stable support for the device. The upper bracket 10 on the support rod 8 cooperates with the upper collar 11, the fixing bolt 12 and the mounting rod 13. Loosening the fixing bolt 12 can adjust the height of the lower mounting thread 9 up and down. The lower mounting thread 9 is threadedly connected to the mounting rod sleeve 14, thereby realizing flexible adjustment of the height of the strong magnetic system 15. The surgeon can operate the fixing bolt 12 to adjust the position and height of the strong magnetic system 15 according to the needs of the surgery. After suspending the clamp and the adsorbed organ in the body to a suitable position, tightening the fixing bolt 12 can fix the strong magnetic system 15 and maintain the suspension state of the organ. The entire suspension process does not require an assistant to lift or operate, reducing the labor cost of the surgery. At the same time, it eliminates the angle interference of the assistant's position on the surgeon's view of the surgical field monitor, ensuring that the surgeon obtains the best field of vision, improving the accuracy of the surgical operation and reducing the surgical risk.

[0077] Third, addressing the inherent drawbacks of existing single-port minimally invasive surgery, such as limited operating space, interference between instruments, and high surgical difficulty (the shortcomings of existing technologies in terms of field of vision obstruction and suspension methods further exacerbate the operating space problem). In contrast to the shortcomings of existing technologies, such as "single-port minimally invasive surgery has only one operating port, instruments and endoscopes interfere with each other, and the operating components of traditional suspension methods further occupy operating space and increase the difficulty of surgery", this patent innovatively and non-obviously separates the execution and control components of suspension operation into a detachable clip inside the body and an external magnetic suction device, realizing a minimalist design without additional suspension connecting rods inside the body, and maximizing the release of surgical operating space in the abdominal cavity. The implementation process of this invention is as follows: only a lightweight component, a detachable clamp, is placed inside the body. There are no connecting rods or thin rods that need to penetrate the abdominal skin. After the clamp is clamped by surgical forceps, it is suspended only by the magnetic force of the external strong magnetic system 15. There are no extra suspension-related components in the abdominal cavity, which will not occupy the instrument operation space of single-port minimally invasive surgery. This effectively reduces the mutual interference between laparoscopic instruments, endoscopes and suspension components, alleviates the problem of limited operating space in single-port surgery, and reduces the difficulty of surgical operation. At the same time, this invention is equipped with multiple clamps, which can magnetically suspend multiple obstructing organs according to surgical needs, more efficiently remove organ stacking obstruction, improve the clarity of the surgical field, and further reduce the difficulty of surgical operation caused by poor field of vision and limited space.

[0078] Fourth, addressing the potential drawback of poor adjustment flexibility in the existing metal clamp suspension method using thin rods (existing metal clamps are pulled by thin rods, and position adjustment is limited by the thin rods). Compared to the shortcomings of existing technologies, such as "the metal clamp suspension adjusts the position of organs by pulling with thin rods, and the rigid connection of the thin rods leads to poor flexibility in adjusting the position of organ suspension, and the thin rods are prone to traction damage to abdominal tissues", this patent innovatively and non-obviously uses magnetic adsorption as the suspension force, combined with the multi-dimensional adjustment structure of the suspension magnetic adsorption device, to achieve precise and flexible adjustment of the organ suspension position, without traction damage from rigid components. The implementation process of this invention is as follows: The strong magnetic system 15 can be equipped with a permanent magnet or an electromagnet with a battery and a current knob. If it is an electromagnet, the magnetic force can be adjusted by changing the current to achieve precise control of the adsorption force of the clip inside the body, thereby flexibly adjusting the suspension force and position of the organ. At the same time, the strong magnetic system 15 can be adjusted vertically by combining the mounting rod 13, fixing bolt 12 and other components. The support structure of the base 7 and the support rod 8 can adjust the horizontal position of the strong magnetic system 15 outside the body. Through the multi-dimensional adjustment of the external device, the magnetic position of the clip inside the body can be changed, thereby flexibly adjusting the suspension position of the organ. Moreover, the magnetic adsorption is a non-contact flexible force without the traction of rigid thin rods, avoiding additional traction damage to the abdominal tissue and the suspended organ.

[0079] The minimally invasive organ suspension device that expands surgical space, as described in this invention, employs a split magnetic attraction design combining an external suspension magnetic device and a detachable internal clamp. The core idea is to achieve minimally invasive suspension of internal organs through non-contact external magnetic attraction. The entire process requires no external punctures or rigid internal connecting rods; it relies solely on the magnetic force of the external magnetic device to pull the internal clamps. Simultaneously, the clamps are opened and closed by operating the clamp jaws with surgical forceps, achieving the minimally invasive goals of "no punctures, no closures, single-person operation, and freeing up internal operating space."

[0080] (i) Regarding the defect in CN114129208A, "The integrated magnetic traction device inside the body occupies operating space, is prone to interference with other instruments when used in single-port surgery, and the clamping operation of surgical forceps further exacerbates the space occupation." Compared to the shortcomings of existing technologies, such as "the internal traction clamp and magnetic component are integrated into one structure, occupying the abdominal operating space, and the clamping operation of the special surgical forceps further compresses the operating space, making instrument interference a prominent problem in single-port minimally invasive surgery", this patent innovatively and non-obviously separates the execution and control components of the suspension operation into an external suspension magnetic suction device and an internal detachable clamp, achieving a minimally simplistic design that retains only a single execution component—a lightweight detachable clamp—in the body.

[0081] The implementation process of this invention is as follows: only a detachable clamp consisting of a special arc-shaped clamp body (1) is placed inside the body. There are no magnetic parts, rotating shafts or other additional connecting structures. There is no need for special surgical forceps to penetrate into the body for clamping and cooperation. The clamp can be opened and closed by inserting the surgical forceps into the first forceps port (4) and the second forceps port (5). After clamping the target organ, the surgical forceps can be directly withdrawn. There are no extra instruments and connecting parts in the abdominal cavity, maximizing the release of surgical operation space and effectively avoiding mutual interference with laparoscopic instruments and endoscopes. It perfectly adapts to the space requirements of single-port minimally invasive surgery.

[0082] (ii) Regarding the defect in CN114129208A, "The operation of the traction clamp relies on a special surgical forceps for clamping, which makes the operation process cumbersome and increases the difficulty of the surgical procedure." Compared with the shortcomings of the existing technology, "the traction clamp needs to be connected with a special surgical forceps through a connecting hook and connecting groove to achieve opening and closing. The locking and positioning operation is cumbersome, requires high precision of the doctor's operation, and increases the difficulty and time cost of the operation"; this patent innovatively and non-obviously designs a direct connection operation structure of forceps mouth one (4) and forceps mouth two (5) at the end of the detachable clamp in the body. No locking or cooperation is required, and the opening and closing control of the clamp can be completed directly through conventional surgical forceps.

[0083] The implementation process of this invention is as follows: During the operation, the head of the conventional surgical forceps only needs to be inserted into the first (4) and second (5) of the clamp, and the force is applied outward to make the two clamping surfaces (2) move away from each other to open the clamp. After aligning with the target organ, the surgical forceps are released, and the clamp automatically closes under the action of the torsion spring to complete the clamping. There are no complicated operations such as jamming and positioning throughout the process, which greatly simplifies the operation process in the body, reduces the difficulty of operation for doctors, and shortens the preparation time for surgery.

[0084] (III) Regarding the defect in CN114129208A, "the external magnetic supply device lacks a flexible and adjustable support design, resulting in low precision in traction force and position control, requiring additional assistants, increasing labor costs, and interfering with the surgical field of vision." Compared with the shortcomings of the existing technology, "the external magnetic device has no dedicated support, the height and position cannot be flexibly adjusted, the traction force and organ suspension position control accuracy is low, and an additional assistant is required to operate the internal surgical forceps or the external magnetic device, which increases labor costs and interferes with the surgeon's surgical field of vision"; this patent innovatively and non-obviously designs the external suspension magnetic device as a multi-dimensional adjustable support structure of base (7), support rod (8) and upper support (10), and is equipped with a strong magnetic system (15) with adjustable magnetic force, so that a single person can independently complete the adjustment and fixation of the suspension device.

[0085] The implementation process of this invention is as follows: the base (7) is placed on the side of the operating table in a position that does not affect the field of vision. The fixing bolt (12) is loosened so that the height of the mounting rod (13) can be adjusted up and down along the upper collar (11). Then, the vertical height of the strong magnetic system (15) is precisely adjusted by connecting the lower mounting thread (9) with the thread of the mounting rod sleeve (14). At the same time, the bracket structure can flexibly adjust the horizontal position of the strong magnetic system (15). The strong magnetic system (15) can be a permanent magnet or an electromagnet with a current knob. The electromagnet can precisely control the magnetic force by changing the current. The surgeon can adjust the height, position and traction force according to the needs of the surgery. Tightening the fixing bolt (12) can fix the strong magnetic system (15) to maintain the suspension state. No additional assistant is needed throughout the process, which reduces labor costs and completely eliminates the interference of the assistant's position on the surgical field of vision.

[0086] (iv) Regarding the defect in CN114129208A, "The traction clamp is designed with interlocking teeth, which can easily cause damage to organs and tissues, and the rotating connection structure has sharp edges and corners, which can easily scratch abdominal tissues." Compared with the shortcomings of the existing technology, "the clamping end of the traction clamp adopts a matching bite tooth design, and the rigid bite is prone to causing compression or puncture damage to organs and tissues. In addition, the magnetic component and the rotating connection structure of the traction clamp have sharp edges and corners, which are easy to scratch other normal tissues in the abdominal cavity"; this patent innovatively and non-obviously designs the internal clamp as a minimally invasive structure with an arc-shaped clamp body (1) and a clamping surface (2) with friction pattern, and all edges of the clamp are rounded and blunted.

[0087] The implementation process of the present invention is as follows: the body (1) of the special arc-shaped clamp in the body conforms to the arc shape of the organ, and the clamping surface (2) adopts friction pattern instead of rigid bite teeth. By increasing the friction force, stable clamping is achieved, avoiding puncture and compression damage to the organ by the bite teeth; all edges of the clamp are designed to be round, without any sharp corners, which can effectively prevent scratch damage to other tissues in the abdominal cavity. At the same time, the protrusion (3) on the clamping surface (2) further improves the clamping stability, and minimizes the risk of damage to the internal tissues while ensuring the traction effect.

[0088] (v) Regarding the defect that "the in-vivo magnetic traction device is an integrated, non-removable structure, which makes recycling difficult, lacks a reuse design, and increases the cost of medical consumables." Compared to the shortcomings of existing technologies, such as "the internal traction clamp and magnetic component are an integral, non-removable structure, which makes recycling difficult after surgery and does not consider sterilization and reuse design, resulting in the product being scrapped after a single use and increasing the cost of medical consumables", this patent innovatively and non-obviously designs the internal execution component as an independent, detachable clamp structure, and uses stainless steel to support high-temperature and high-pressure sterilization and reuse.

[0089] The implementation process of this invention is as follows: After the operation, it is only necessary to re-insert the clamp port one (4) and clamp port two (5) with conventional surgical forceps, open the clamp to release the organ, and then the clamp can be directly removed from the body through the surgical operation hole; the clamp is made of stainless steel and can withstand high temperature and high pressure sterilization. It can be reused after standardized sterilization. At the same time, this invention is equipped with multiple clamps, which can meet the suspension needs of multiple organs during the operation, which reduces the difficulty of the retrieval operation and reduces the cost of medical consumables, meeting the requirements of economic efficiency and practicality of medical devices.

[0090] It should be noted that the multiple solutions provided in this patent include their own basic solutions, which are independent of each other and do not restrict each other. However, they can also be combined with each other without conflict to achieve multiple effects.

[0091] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims.

Claims

1. A minimally invasive organ suspension device that expands surgical space, characterized in that, The organ suspension device includes an external magnetic suspension device and an internal detachable clamp. The suspension magnetic attraction device includes a strong magnetic system (15), and an installation rod sleeve (14) is arranged above the strong magnetic system (15). The detachable clamp includes an internally-specific curved clamp body (1), the end of which has two clamping surfaces (2) capable of clamping organs, and a protrusion (3) on the clamping surfaces (2); the end of the clamp includes a forceps jaw one (4) and a forceps jaw two (5); the clamp can be operated by inserting forceps jaw one (4) and forceps jaw two (5) with surgical forceps.

2. The minimally invasive organ suspension device for expanding surgical space as described in claim 1, characterized in that, The suspension magnetic suction device includes a base (7), a support rod (8) is arranged on the base (7), a horizontal upper bracket (10) is arranged on the support rod (8), the upper bracket (10) includes an upper sleeve (11), an installation rod (13) is inserted into the upper bracket (10), a fixing bolt (12) passes through the hole on the upper sleeve (11) and can press the installation rod (13), a lower installation thread (9) is arranged below the installation rod (13); the lower installation thread (9) and the installation rod sleeve (14) are threadedly connected.

3. The minimally invasive organ suspension device for expanding surgical space as described in claim 1, characterized in that, The two clamping surfaces (2) contain friction patterns.

4. The minimally invasive organ suspension device for expanding surgical space as described in claim 1, characterized in that, The clip is made entirely of stainless steel and can be attracted by a strong magnetic system.

5. The minimally invasive organ suspension device for expanding surgical space as described in claim 1, characterized in that, Permanent magnets are arranged in the square shell of the strong magnetic system (15).

6. The minimally invasive organ suspension device for expanding surgical space as described in claim 1, characterized in that, An electromagnet is arranged in the square housing of the strong magnetic system (15). The electromagnet can adjust the magnetic force by changing the current. That is, an electromagnet and a storage battery are arranged in the square housing, and the current knob of the storage battery is arranged on the housing.

7. The minimally invasive organ suspension device for expanding surgical space as described in claim 1, characterized in that, Loosen the fixing bolt (12) to adjust the height of the lower mounting thread (9) up and down.

8. The minimally invasive organ suspension device for expanding surgical space as described in claim 1, characterized in that, The clips have rounded edges and are sterilized before use.

9. The minimally invasive organ suspension device for expanding surgical space as described in claim 1, characterized in that, The clip contains multiple clips.

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