Pliers, suction assembly and suction pliers having the same

Abstract

The present invention provides a suction forceps with a simple structure, stable clamping, safe and precise operation, the suction forceps comprises a casing, a trigger, a pliers body assembly and a suction assembly, the casing comprises a handle portion and a mounting portion, the mounting portion is mounted in front of the handle portion, the longitudinal axis of the mounting portion extends laterally, and the handle portion extends from bottom to top; the trigger can pivot relative to the handle portion; the trigger and the pliers body assembly cooperate with the suction assembly to comprise a suction tube, one end of the suction tube is arranged in the mounting portion, and the other end extends outward, the suction tube is fluidly connected with the pliers tube, and the suction tube and the pliers tube as a whole define a fluid channel.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, and in particular to a suction forceps. Background Art

[0002] Clinically, when performing surgical separation of tissues, surgical instruments such as electric knives and surgical forceps are often used to separate tissues, and bleeding often occurs at this time; smoke is often produced when using electric knives, and bleeding during tissue separation and smoke produced by electric knives will affect the operating field of view. Clinically, another assistant is often required to use an aspirator, but it is difficult for the assistant and the surgeon to cooperate with each other. Moreover, when the operating space itself is very limited, multiple people operate at the same time, which greatly affects the operating space and the suction effect is also limited. In addition, operating multiple instruments at the same time will inevitably increase the number of holes opened in the human body during minimally invasive surgery, causing unnecessary pain to the patient's recovery. The integration and reduction of instruments can reduce unnecessary holes. Reduce the operation time.

[0003] The instruments currently required for partial nephrectomy include: electric hook, vascular clamp, laparoscope, separation forceps, electric scissors, suction forceps, high-frequency electric knife, etc. The current brief surgical steps are as follows: 1) Disinfect the drape, connect and fix various tubes and wires. Use a No. 11 knife to make an incision about 8 cm long 2 cm above the iliac crest on the mid-axillary line, open it with a vascular clamp, wipe the blood with the tail, and enter the retroperitoneal space. 2) Insert a homemade air bag, use a 50mL syringe to inject 600-800mL of gas to expand, maintain for 3-5 minutes, empty and remove the air bag, and establish a retroperitoneal space. 3) Insert a 10cm Trocar in the first incision, suture the muscle layer and skin of the small incision on the iliac crest with 7” silk thread, insert an observation mirror, and inject CO2 gas. 4) Use this guide hole to puncture under the costal margin of the posterior iliac line and the anterior axillary costal margin, and insert 10mm and 5mm Trocar. 5) Hand over the suction head and electric hook to open the perirenal fascia, remove the perirenal fat, expose the renal parenchyma and cancer, free the renal artery, and insert the vascular clamp into the cavity. 6) Block the renal artery and time it! The time for blocking the renal pedicle: Generally controlled within 15 to 30 minutes. During this period, the damage to the kidney is mild and (or) reversible. Blocking time exceeding 40 minutes may cause irreversible damage to the kidney and impair renal function. The significance of partial nephrectomy in urban areas. 7) Confirm the resection range according to the size of the tumor under endoscopy to avoid tumor residue. Hand over the separation forceps and use electric scissors to separate the part of the renal tissue containing the tumor. If there is bleeding during this period, use suction forceps to remove it. 8) Hand over the needle holder and special suture to suture the solid stump, cover with hemostatic gauze or use electric knife to stop bleeding. 9) Remove the vascular clamp, observe the bleeding situation, and stop bleeding completely.

[0004] Minimally invasive surgery has been widely used in clinical practice in recent years. It has been highly valued by clinicians and patients for its minimally invasive damage, less bleeding, and fast postoperative recovery. There are many types of biological soft tissues in the abdominal cavity, with a large area, delicate tissue structure, and a sticky and flexible surface. In laparoscopic surgery, surgical forceps and aspirators are the most commonly used minimally invasive surgical instruments. Existing laparoscopic surgical forceps generally operate on tissues through mechanical clamping of two claws, which has problems such as laborious operation when clamping and pulling tissues, and easy slippage or injury. Negative pressure technology is widely used in the medical field. Through the combination of negative pressure and clamping mechanism, the clamping and negative pressure suction of tissues are realized. The instrument is easy to operate, flexible, fast, and comfortable to use, so that doctors can quickly and accurately remove the diseased tissue. After blocking the renal pedicle, the time of partial nephrectomy is controlled within 15 to 30 minutes, so it is necessary to operate a convenient, flexible, fast, and comfortable instrument to enable doctors to quickly and accurately remove the diseased tissue.

[0005] CN105078542A, CN204951146U and CN201275107Y all disclose surgical forceps with suction function, but the handles are held by fingers, and the torque cannot be effectively transmitted. In addition, the hands are easily fatigued and tissue damage is easily caused by misoperation. The forceps head and the rod are too large to pass through the puncture device, and the forceps head can only maintain one state in the body, the angle cannot be adjusted, and clamping is inconvenient. In addition, when the forceps head is a spoon-shaped forceps body, it cannot clamp human tissue. Summary of the invention

[0006] The present invention provides a suction pliers with simple structure, stable clamping, safe and accurate operation, and the suction pliers comprises:

[0007] The housing comprises a handle portion and a mounting portion, wherein the mounting portion is mounted in front of the handle portion, a longitudinal axis of the mounting portion extends transversely, and the handle portion extends from bottom to top;

[0008] A trigger, a first end of which is rotatably connected to the mounting portion, and the trigger is capable of pivoting relative to the grip portion;

[0009] A caliper body assembly, comprising a caliper tube and a caliper blade with an axis extending in a transverse direction, one end of the caliper tube being arranged in a mounting portion, the other end of the caliper tube extending out of the mounting portion, the caliper blade being hinged to a portion of the caliper tube extending out of the mounting portion so that the caliper tube and the caliper blade form a clamp, the caliper blade being hinged to the mounting portion, the trigger cooperating with the caliper tube to drive the caliper tube to move in a horizontal direction, thereby driving the caliper blade to open or close relative to the caliper tube;

[0010] The suction assembly comprises a suction tube, one end of which is arranged in the mounting portion and the other end of which extends outward. The suction tube is fluidically connected with the clamp tube, and the suction tube and the clamp tube define a fluid channel as a whole.

[0011] Preferably, the caliper body assembly further comprises an outer tube, the caliper tube is nested inside the outer tube, and the caliper blade is hinged on the outer tube to achieve a movable connection between the caliper blade and the mounting portion.

[0012] Preferably, a movable seat is provided in the mounting portion, and a connecting cavity penetrating front to back is formed in the movable seat, the proximal end of the clamp tube is sealed and connected to the connecting cavity and can rotate relative to the connecting cavity, and the distal end of the suction tube is sealed and connected to the connecting cavity.

[0013] Preferably, the trigger includes a wrench and a connecting seat formed on the upper end of the wrench, the connecting seat is rotatably mounted in the mounting portion, a vertical slide groove is formed on the connecting seat, the movable seat is slidably connected to the vertical slide groove, and a first elastic reset member is provided between the connecting seat and the mounting portion.

[0014] Preferably, the trigger further comprises an elastic stop portion, wherein the elastic stop portion is arranged through the mounting portion, and the elastic stop portion is used to limit the pivoting of the wrench.

[0015] Preferably, a rotating member is provided on the pipe section of the outer pipe extending out of the mounting portion, and rotating the rotating member drives the clamp piece hinged thereon to rotate together, thereby driving the clamp pipe to rotate together.

[0016] Preferably, the connecting seat includes a pivot portion and a left connecting plate and a right connecting plate connected to the left and right sides of the pivot portion, the left connecting plate and the right connecting plate respectively form a left slide groove and a right slide groove extending vertically, the pivot portion is pivotally mounted on the inner side of the mounting portion, and the movable seat forms a left sliding member and a right sliding member toward the left and right sides respectively, and the left sliding member and the right sliding member are respectively slidably connected to the left slide groove and the right slide groove.

[0017] Preferably, the outer tube and the opening of the mounting portion are sealed with a sealing ring.

[0018] Preferably, the suction component further comprises an adjustment button, which is arranged throughout the housing and acts on the suction hose to different degrees when the adjustment button is pressed at different depths, thereby adjusting the suction flow of the suction hose.

[0019] Preferably, the adjustment button includes a pressing portion and an intermittent motion part. The adjustment button is arranged at the corner connection between the mounting portion and the handle portion. The pressing portion runs through the housing. The intermittent motion part is arranged between the pressing portion and the suction hose. The pressing portion drives the intermittent motion part to act on the suction hose to different degrees.

[0020] The present invention further provides an attraction component, which adopts the attraction component described above.

[0021] The present invention further provides a pair of pliers, which use the trigger and pliers body assembly described above. The suction pliers provided by the present invention integrate the suction assembly and the pliers body assembly together to form the same instrument, and the separation and suction function switching is convenient and reliable.

[0022] When the suction forceps provided by the present invention perform the suction function or pick up tissue, the elastic stopper locks the forceps body to avoid tissue damage and reduce the fatigue of doctors.

[0023] In addition, the regulating button provided by the present invention controls the opening and closing of the negative pressure suction and the flow rate when the tumor is removed. The present invention provides a suction forceps for laparoscopic partial nephrectomy with simple structure, stable clamping, safer and more accurate operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of the suction forceps provided in an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the opening of the clamp of the suction clamp provided by an embodiment of the present invention;

[0026] Figure 3 A structural cross-sectional view of the suction forceps provided by an embodiment of the present invention;

[0027] Figure 4 A schematic diagram of a portion of the structure of the suction forceps provided in an embodiment of the present invention;

[0028] Figure 5 A partial structural schematic diagram of a rotating member provided by the present invention;

[0029] Figure 6 A schematic diagram of the cooperation between the clamp body assembly and the suction assembly provided by the present invention;

[0030] Figure 7 A schematic diagram of the structure of an adjustment button provided in one embodiment of the present invention;

[0031] Figure 8-9 for Figure 7 A schematic diagram of the use process of the adjustment button is provided;

[0032] Figure 10-11 A schematic diagram of the structure of an adjustment button provided in another embodiment of the present invention;

[0033] Figure 12-13 for Figure 10-11 Schematic diagram of the use process of the adjustment button provided. DETAILED DESCRIPTION

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Refer to the following Figure 1-Figure 13 , describing the suction forceps provided by an embodiment of the present invention.

[0036] See also Figure 1-Figure 4 A suction forceps comprises a housing 1, a trigger 2, a clamp body assembly 3 and a suction assembly 4, the housing 1 comprises a handle portion 11 and a mounting portion 12, the mounting portion 12 is mounted in front of the handle portion 11, the longitudinal axis of the mounting portion extends laterally, the "longitudinal axis" here refers to the axis extending along the length direction of the corresponding component, and the handle portion extends from bottom to top; the clamp body assembly and the suction assembly are mounted on the mounting portion to respectively realize the clamping and suction functions, the suction assembly sucks the biological tissue clamped by the clamp body assembly out of the body, wherein the trigger is used to drive the opening and closing of the clamp body to realize the clamping function.

[0037] The suction forceps provided by the present invention are mainly used for partial nephrectomy. The device integrates the separation forceps and the suction forceps into the same medical device. In this way, at different stages of the operation, it is no longer necessary to use separate separation forceps and suction forceps to repeatedly enter the abdominal cavity in sequence, which simplifies the process and shortens the operation time. In addition, the manual control part provided in this embodiment is in the form of a gun-type grip, abandoning the existing finger-controlled forceps rod form, which is light and labor-saving to use and easier to control.

[0038] In some embodiments disclosed in the present invention, the longitudinal axis of the handle portion 11 intersects with the longitudinal axis of the mounting portion 12 at a vertical angle or at an acute angle, so that the mounting portion 12 is in a horizontal position, and the handle portion is in a vertical or vertically inclined position, so that the user can hold the handle with the palm of his hand, which is comfortable, easier to apply force, and less prone to fatigue. In addition, since the mounting portion is installed in front of the handle portion, it can be placed horizontally on the table as a whole, which is more convenient to place and less likely to contaminate the pliers body; the geometric shape of the handle portion provided in this embodiment conforms to the principles of ergonomics and is convenient for users to hold.

[0039] However, the present disclosure is not limited to this. In other embodiments of the present disclosure, the suction forceps may not include a suction component. In this case, the user controls the opening and closing of the forceps body component by controlling the trigger to achieve the clamping function. That is, the forceps provided by the present invention do not have the suction function. Of course, the forceps body component provided by the present invention can be combined with other suction devices to complete the suction function.

[0040] It should be noted that the directions or positional relationships indicated by "up", "down", "near", "far", "left", "right", "front", "back", "lateral", and "axial" described in this article are all based on the directions or positional relationships where the suction forceps are placed upright on a horizontal plane, among which "near" refers to the side where the suction forceps is close to the doctor, "far" refers to the side where the suction forceps is away from the doctor, and "lateral" refers to the horizontal direction or a roughly horizontal direction.

[0041] In some embodiments of the present invention, the trigger 2 is rotatably connected to the mounting portion 12. In some embodiments of the present invention, the trigger 2 is located in front of the handle portion 11 and its longitudinal line is parallel or approximately parallel to the longitudinal axis of the handle portion, so that the user can hold and pull it, the operation is flexible, and the hand does not get tired.

[0042] The trigger 2 can pivot relative to the handle 11, and the clamp body assembly 3 includes a clamp tube 31 and a clamp blade 32 with an axis extending in a transverse direction. One end of the clamp tube 31 is arranged in the mounting portion 12, and the other end of the clamp tube 31 extends out of the mounting portion 12, that is, a part of the clamp tube section placed horizontally passes through the mounting portion, and the remaining section extends out of the mounting portion, and the clamp blade 32 is hinged on the section of the clamp tube 31 extending out of the mounting portion 12, so that the proximal section of the clamp tube 31 and the clamp blade 32 form a clamp, and the trigger 2 is used to control the clamp tube 31 and the clamp blade 32 to close or open to achieve the clamping function. In addition, the fluid channel defined by the clamp tube is used for biological tissue or liquid to circulate so as to be combined with the aforementioned suction component to achieve the negative pressure extraction of biological tissue obtained by the clamp.

[0043] In some embodiments of the present invention, the trigger 2 converts its own rotational motion into horizontal translational motion of the clamp tube 31 through a transmission mechanism, and the clamp blade 32 can be directly hinged to the mounting portion or further hinged to the mounting portion through an intermediate connecting member; in this case, see Figure 2When the trigger drives the clamp tube 31 to move forward in the horizontal direction, the jaws that were originally in the closed state are converted to the open state due to the pulling of the mounting portion; specifically, when the trigger 2 is pulled, the clamp tube 31 moves forward or backward in the horizontal direction, and the jaws 32 hinged to the clamp tube 31 can be opened or closed compared to the clamp tube 31. In some embodiments, a first elastic reset member 6 is provided between the trigger 2 and the mounting portion 12. For example, when the trigger 2 is manually pulled to pivot toward the handle portion 11, the trigger 2 applies force to the first elastic reset member 6, and the first elastic reset member 6 is converted from a relaxed state to a tense state, and the clamp tube 31 moves backward to drive the jaws 32 to close; when the trigger 2 is released, the first elastic reset member 6 provides reset power for the trigger 2, and the trigger 2 drives the clamp tube 31 to move forward in translation. At this time, the jaws 32 restrained by the mounting portion opens and forms a clamp with the clamp tube. It can be understood that the angle of the clamp formed by the clamp tube 31 and the clamp blade 32 can be controlled by controlling the pivot angle of the trigger 2; in this embodiment, the maximum opening angle of the clamp blade 32 compared to the clamp tube 31 is 60°.

[0044] In this embodiment, the clamp body assembly also includes an outer tube 33, and the clamp tube 31 is nested inside the outer tube 33. The outer tube 33 does not hinder the translational movement of the clamp tube 21. The clamp blade 32 is hinged on the outer tube 33 to realize the movable connection between the clamp blade 32 and the mounting portion, so that the translation of the clamp tube 31 can realize the opening or closing of the clamp blade; illustratively, part of the radial tube section at the distal end of the outer tube 33 extends forward to form a connecting piece 331, and the proximal side of the clamp blade is rotatably connected to the clamp tube 31 and the connecting piece through the first movable shaft 311 and the second movable shaft 321 respectively. The clamp tube undergoes horizontal displacement, which drives the horizontal displacement of the second movable shaft, and then drives the clamp blade to rotate to achieve opening or closing.

[0045] Specifically, the front end of the clamp tube 31 is provided with a through hole 311. In some embodiments of the present invention, an opening 121 is formed on the front side of the mounting portion 12, and the outer tube 33 passes through the opening 121 to enter the mounting portion 12; optionally, the outer tube 31 is pivotally connected to the opening, and the clamp blade is hinged to the portion of the outer tube 33 extending outside the mounting portion to limit the translational movement of the clamp blade 32 in the front-to-back direction, thereby finally achieving the opening or closing of the clamp blade 32 relative to the clamp tube 31. In addition, since the internal structure of human tissue is a three-dimensional structure, the morphology and location of the diseased tissue vary. In some embodiments of the present invention, please refer to Figure 5 and Figure 6, a rotating member 7 is arranged on the pipe section of the outer tube 33 extending out of the mounting portion; illustratively, the rotating member is a rotating disk 7 sleeved on the outer tube 33, and by rotating the rotating disk 7, the hinged clamp blade 32 is driven to rotate together, and then the clamp tube 31 is driven to rotate together, so that the clamp tube and the clamp blade can be rotatably adjusted; in this embodiment, the rotating disk 7 is against the front side of the mounting portion 12, and the user can adjust the angle of the clamp through the setting of the rotating disk 7 to adapt to the clamping requirements at different angles. In this way, the clamp provided by the present invention can achieve 360-degree rotation, can adapt to the three-dimensional structure of human tissue, and has significant advantages in clinical practice. In addition, since the clamp blade provided by the present invention can be opened or closed, but the clamp tube can only be translated but not opened or closed, compared with the existing conventional clamps that open or close each other, the flexibility is insufficient when clamping tissue, and the clamp of the present invention can achieve 360-degree rotation, so that the technical problem of insufficient flexibility of the clamp is effectively solved.

[0046] In some embodiments of the invention, the suction component includes at least a suction tube 51, which is used to attract biological tissue or liquid in the clamp tube 31. In this way, the suction tube 51 can be connected to the fluid of the clamp tube 31. Exemplarily, the suction tube 51 can be set through the body.

[0047] In some other embodiments of the present invention, due to the aforementioned requirement for the rotation of the clamp tube, one end of the clamp tube needs to be rotatably mounted on the inner side of the mounting portion. At the same time, in order to achieve the connection between the fluid channel of the clamp tube and the suction component to guide the clamped biological tissue, the clamp tube needs to cooperate with the suction component. Based on this, the clamp body assembly disclosed in this embodiment also includes a movable seat 13 installed in the mounting portion 12, and a connecting cavity that passes through the front and back is formed in the movable seat 13. The clamp tube 31 is sealed and connected to the connecting cavity. The clamp tube 31 is rotatably arranged in the connecting cavity so that the clamp tube can rotate relative to the connecting cavity, and the distal end of the suction tube 51 is sealed and connected to the connecting cavity. In this way, the clamp tube 31 and the suction tube 51 achieve fluid communication through the connecting cavity 100, so that biological tissue and liquid can be attracted out of the body through the fluid channel. At the same time, the pivot connection between the clamp tube and the movable seat realizes a 360-degree rotation of the clamp tube and the clamp blade, so that the angle of the clamp is adjustable.

[0048] Specifically, the clamp tube 31 is sealed and connected to the communication cavity via a sealing ring 300 .

[0049] In some embodiments of the present invention, the movable seat 13 disclosed in this embodiment also cooperates with the trigger to drive the clamp tube to move forward and backward. The trigger 2 includes a wrench 21 and a connecting seat 22 arranged at the upper end of the wrench 21. The connecting seat 22 is rotatably installed in the mounting portion 12. A vertical slide groove is formed on the connecting seat 22. The movable seat 13 is slidably connected to the vertical slide groove. When the wrench 21 is pulled, the connecting seat 22 cooperates with the movable seat 13 to convert the pivotal displacement of the trigger 2 into horizontal movement of the movable seat, and finally drives the clamp tube 31 to move horizontally. Therefore, the movable seat and the connecting seat realize the function of the aforementioned transmission mechanism.

[0050] In this embodiment, the connecting seat 22 includes a pivot portion 221 and a left connecting plate 222 and a right connecting plate (not shown) connected on the left and right sides of the pivot portion, and the left connecting plate 222 and the right connecting plate respectively form a left slide groove 220 and a right slide groove extending vertically, and the pivot portion 221 is pivotally mounted on the inner side of the mounting portion 12, and the movable seat 13 forms a left sliding member 131 and a right sliding member toward the left and right sides, respectively, and the left sliding member 131 and the right sliding member are slidably connected to the left slide groove 220 and the right slide groove, respectively.

[0051] The first elastic reset member 6 is disposed between the pivoting portion 221 and the mounting portion 12. As mentioned above, the first elastic reset member 6 is suitable for providing reset power for resetting the trigger 2, so that the trigger 2 has a tension state and a reset state. When the trigger is in the tension state, the clamp tube 31 and the clamp blade 32 are closed or open at a small angle. When the trigger 2 is in the reset state, the clamp tube 31 and the clamp blade 32 are open at the maximum angle.

[0052] In some preferred embodiments, the trigger 2 further includes an elastic stopper 23, which is arranged through the mounting portion. The elastic stopper 23 is used to limit the reset of the trigger so that it remains in a tense state. In this way, when the suction component performs the suction function, the clamp is locked by the elastic stopper to avoid tissue damage caused by the doctor's misoperation during the suction process. In addition, when the clamp is required to perform the clamping function, the trigger is directly pulled to unlock the clamp to achieve the clamping function. Optionally, the elastic stopper can also be pressed, the elastic stopper is retracted, the trigger is automatically reset, and the clamp is opened to achieve the clamping function.

[0053] Specifically, the elastic stop portion includes an elastic button arranged through the mounting portion and a stop block connected to the elastic button. When the button is pressed, the stop block moves axially toward the pivoting portion to stop the pivoting of the pivoting portion, thereby locking the wrench.

[0054] In this embodiment, the outer tube 33 is sealed with the opening of the mounting portion by a sealing ring 35 to prevent biological tissue or liquid from entering the mounting portion under negative pressure and causing contamination and damage to the equipment; the sealing ring can also be arranged between the turntable and the outer tube 33.

[0055] In some preferred embodiments, in this embodiment, one side of the clamp tube 31 corresponding to the clamp blade 32 is a plane 312, and the other side is a circumferentially extending arc surface, so that the clamp formed by the clamp tube 31 and the clamp blade 32 is more convenient to clamp and is not easy to fall off; specifically, the clamp tube and the clamp blade have serrated edges, so that the clamp formed by the two is easier to peel off and clamp.

[0056] In some embodiments of the present invention, the suction tube is a suction hose 51, and the suction hose extends proximally from the movable seat, passes through the mounting portion and the handle portion, and finally extends to the outside of the housing, so that the suction hose can float under the guidance of the movable seat 13.

[0057] In some embodiments of the present invention, see Figure 7 and Fig.11 , the suction component also includes an adjustment button 9, which is arranged throughout the housing 1. When the adjustment button 9 is pressed to different depths, it acts on the suction hose 51 to different degrees, so as to adjust the suction flow of the suction hose 51; in some specific embodiments, when the adjustment button 9 is in the initial state, it can press the suction hose 51 so that the suction hose is in a completely closed state without negative pressure suction. When the user applies pressure to the adjustment button 9 with different forces, the degree of closure of the suction hose 51 is different, thereby realizing the gear control of the suction flow of the suction hose. Among them, the adjustment button can adopt a variety of structural forms to realize the aforementioned gear control function. In some preferred embodiments disclosed by the present invention, the adjustment button includes a pressing portion 90 and an intermittent motion member, the adjustment button is arranged at the corner connection between the mounting portion and the handle portion, the pressing portion 90 is arranged throughout the housing 1, the intermittent motion member is arranged between the pressing portion 90 and the suction hose, and the pressing portion 90 drives the intermittent motion member to act on the suction hose to different degrees.

[0058] In some embodiments disclosed in the present invention, the gap moving member includes a lever member 91 and a connecting rod 95 movably arranged inside the mounting portion, a second elastic reset member 96 is provided between the pressing portion 90 and the mounting portion 12, and a third elastic reset member 97 is provided between the connecting rod 95 and the mounting portion 12. The second elastic reset member 96 and the third elastic reset member 97 provide reset power for the reset of the pressing portion and the connecting rod; a tongue 93 is provided on the connecting rod 95, and the lever member 91 has an upper arm 911 and a lower arm 912. The lever member 91 The upper arm 911 of the lever member connected to the pressing portion 90 is provided with a plurality of teeth grooves 913 along its circumference. The tongue 93 on the connecting rod and the teeth grooves 913 on the lever member are overall similar to a ratchet structure. The gap movement of the ratchet structure enables the lower arm 912 of the lever member to press the suction hose to different degrees. Pressing the pressing portion 90 drives the lever member 91 to achieve different degrees of radial rotation. When different teeth grooves on the upper arm of the lever member 91 cooperate with the connecting rod tongue stopper, the lower arm of the lever member presses the suction hose to different degrees, thereby achieving flow regulation.

[0059] like Figure 7 As shown, in some embodiments, see Figure 7-9 The gap moving part also includes a support shaft 92 arranged on the inner side of the mounting part, and the support shaft 92 is provided with an axially extending slide groove. The lever member 91 is pivotally mounted on the support shaft 92 so that the lever member can rotate radially around the support shaft. A movable block is provided on the connecting rod 95, and the movable block is slidably connected in the aforementioned slide groove. The multiple tooth grooves on the lever member are suitable for driving the movable block to axially displace along the slide groove of its support shaft (in the direction of the length extension of the support shaft), thereby driving the convex tongue to axially displace, that is, the radial rotation of the tooth groove pushes the axial displacement of the convex tongue so that it cooperates with the corresponding tooth groove stopper. The third elastic reset member provides axial reset power for the convex tongue so that the convex tongue keeps the lever member in a certain position, maintains the gear position, and continues to press the pressing part. The radially outermost tooth groove drives the lever member to release the cooperation with the connecting rod tongue. The lever member can be quickly reset under the action of the second elastic reset member. The connecting rod drives the convex tongue on the connecting rod to reset under the action of the third elastic reset member. In this process, when the gear position is adjusted, the adjustment button operation is more stable and easier to reset. In this embodiment, two tooth grooves 913 are arranged at intervals on the radial outer side of the upper arm 911 of the lever member, and a push block 915 is formed on the radial outer side of the two tooth grooves. Figure 8 and Fig. 9As shown, the structure provides three suction gears; specifically, 1. Initial state: the pressing part is not pressed, the lower arm of the lever member presses the suction hose, the suction hose is always closed, and there is no negative pressure suction; 2. Small flow suction: the pressing part is pressed to the first gear, the first tooth groove cooperates with the protruding tongue, the suction hose is half opened, and the negative pressure system can pass 50% of the flow; 3. Large flow suction: the pressing part is pressed to the second gear, the second tooth groove cooperates with the protruding tongue, the suction hose is fully opened, and the negative pressure system can pass 100% of the flow; 4. Reset of the lever member: the pressing part is pressed to the third gear, and the pushing block 915 of the lever member pushes the connecting rod axial displacement to release the stopping effect of the protruding tongue on the lever member, and under the action of the elastic reset member, the lever member and the connecting rod are reset.

[0060] In some other embodiments, such as Figure 10-13 As shown, the gap moving part includes a support shaft A900 and a support shaft B901 arranged on the inner side of the mounting portion, the lever member 91 is pivotally mounted on the support shaft A900, so that the lever member 91 can rotate radially around the support shaft A900, and the connecting rod 95 is pivotally mounted on the support shaft B901, so that the connecting rod 95 can rotate radially around the support shaft B901, and the multiple tooth grooves 913 on the lever member 91 are suitable for driving the connecting rod to rotate radially, thereby driving the tongue 93 to engage with the lever member 91 for a stop, that is, the radial rotation of the tooth grooves pushes the tongue 93 to rotate radially so that it engages with the corresponding tooth groove stop, thereby keeping the lever member at a certain position, continuing to press the pressing portion, and the radially outermost tooth groove drives the lever member to release the engagement with the connecting rod tongue, the support shaft A900, support shaft B901 and the tongue provided in this embodiment form a triangular structure, and the locking state of the lever member is stable. When the pressing part is released, the lever member can be quickly reset under the action of the second elastic reset member, and then the connecting rod drives the tongue on the connecting rod to reset under the action of the third elastic reset member. In this process, when the gear adjustment is realized, the adjustment button operation is more stable and easier to reset. In this embodiment, two tooth grooves 913 are arranged radially outside the upper arm 911 of the lever member, and a push block 915 is formed radially outside the two tooth grooves. This structure provides 3 gears of attraction; specifically, as Figure 10-11 As shown, 1. Initial state: the pressing part is not pressed, the lower arm of the lever member presses the suction hose, the suction hose is always closed, and there is no negative pressure suction; 2. Small flow suction: the pressing part is pressed to the 1st gear, the first tooth groove cooperates with the protruding tongue, the suction hose is half opened, and the negative pressure system can pass 50% of the flow; 3. Large flow suction: the pressing part is pressed to the 2nd gear, the second tooth groove cooperates with the protruding tongue, the suction hose is fully opened, and the negative pressure system can pass 100% of the flow; 4. The lever member is reset: the pressing part is pressed to the 3rd gear, and the pushing block 915 of the lever member pushes the connecting rod axial displacement to release the stopping effect of the protruding tongue on the lever member, and under the action of the elastic reset member, the lever member and the connecting rod are reset.

[0061] In the present embodiment, the first elastic reset member 6, the second elastic reset member 96 and the third elastic reset member 97 are all compression springs. It can be understood that in some embodiments, the connecting rod undergoes axial displacement, and the telescopic direction of the second elastic reset member is consistent with the longitudinal extension direction of the support shaft, so as to provide a reset force for the axial reset of the tongue, and finally promote the tongue to cooperate with the tooth groove stop; in other embodiments, the connecting rod undergoes radial displacement, and at this time, the telescopic direction of the second elastic reset member is perpendicular to the longitudinal extension direction of the support shaft, so as to provide a reset force for the radial reset of the tongue, and finally promote the tongue to cooperate with the tooth groove stop.

[0062] The protruding tongue 93 is arranged on the connecting rod 95. In some embodiments, the connecting rod 95 is movably connected to the supporting shaft 92, and when the lever member rotates radially, the radially distributed tooth grooves 913 are driven to sequentially stop and cooperate with the protruding tongue, so that the radial rotation of the upper arm of the lever drives the swing of the lower arm, and finally realizes the adjustment of the suction flow.

[0063] like Figure 1 As shown, the adjustment button provided in this embodiment is installed at the corner connection between the mounting portion and the handle portion, which provides convenient conditions for the radial rotation of the intermittent moving part to act on the suction hose. The structure of the adjustment button matches the setting shape of the housing. During use, the doctor can use a single hand to control the clamping process and the suction process. The handle portion is held with the palm of the hand. When clamping is required, the ring finger and the little finger pull the trigger. When suction is required, the thumb presses the adjustment button. The operation is simple and fast, and the existing need for two doctors to complete the surgical operation is abandoned. In addition, there is no need for cumbersome adjustment gestures, and the same gesture can complete all surgical operations.

[0064] Optionally, the lever member has an upper arm and a lower arm that are both bent arms, and the radial rotation of the upper arm on the lever drives the swing of the lower arm, ultimately achieving the adjustment of the suction flow rate, and the end of the lower arm forms an arc design that is concave toward the suction hose to better compress the suction hose.

[0065] The geometric shape of the gripping portion of the suction forceps provided by the present invention conforms to the principle of ergonomics, is convenient for applying force, and does not easily fatigue the doctor's hands, and is suitable for long-term clinical operations.

[0066] The suction forceps provided by the present invention integrate the suction component and the forceps body component to form the same instrument. The separation and suction functions are switched conveniently and reliably. When the instrument performs the suction function or picks out tissue, it is best that the jaws remain closed. The elastic stopper provided by the present invention can lock the separation forceps to avoid tissue damage and reduce the doctor's fatigue.

[0067] In addition, the regulating button provided by the present invention controls the opening and closing of the negative pressure suction and the flow rate when the tumor is removed. The present invention provides a suction forceps for laparoscopic partial nephrectomy with simple structure, stable clamping, safer and more accurate operation.

[0068] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0069] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A suction forceps, characterized in that: The suction forceps include: The housing comprises a handle portion and a mounting portion, wherein the mounting portion is mounted in front of the handle portion, a longitudinal axis of the mounting portion extends transversely, and the handle portion extends from bottom to top; A trigger, a first end of which is rotatably connected to the mounting portion, and the trigger is capable of pivoting relative to the grip portion; A caliper body assembly, comprising a caliper tube and a caliper blade with an axis extending in a transverse direction, one end of the caliper tube being arranged in a mounting portion, the other end of the caliper tube extending out of the mounting portion, the caliper blade being hinged to a portion of the caliper tube extending out of the mounting portion so that the caliper tube and the caliper blade form a clamp, the caliper blade being hinged to the mounting portion, the trigger cooperating with the caliper tube to drive the caliper tube to move in a horizontal direction, thereby driving the caliper blade to open or close relative to the caliper tube; The suction assembly comprises a suction hose, one end of which is arranged in the mounting portion, and the other end extends outward, the suction hose is fluidly connected with the clamp tube, and the suction hose and the clamp tube define a fluid channel as a whole, the clamp body assembly also comprises an outer tube, the clamp tube is nested inside the outer tube, and the clamp blade is hinged on the outer tube to realize the movable connection between the clamp blade and the mounting portion; the suction assembly also comprises an adjustment button, the adjustment button runs through the housing, and acts on the suction hose to different degrees when the adjustment button is pressed to different depths, so as to adjust the suction flow of the suction hose; the adjustment button comprises a pressing portion and an intermittent motion part, the adjustment button The button is arranged at the corner connection between the mounting part and the handle part, the pressing part runs through the housing, the intermittent moving part is arranged between the pressing part and the suction hose, the pressing part drives the gap moving part to act on the suction hose to different degrees; the gap moving part includes a lever part and a connecting rod movably arranged on the inner side of the mounting part, a second elastic reset part is arranged between the pressing part and the mounting part, a third elastic reset part is arranged between the connecting rod and the mounting part, a tongue is arranged on the connecting rod, the lever part has an upper arm and a lower arm, the lever part is connected to the pressing part, the upper arm of the lever part is provided with a plurality of teeth and grooves along its circumference, and the tongue on the connecting rod is meshed with the teeth and grooves on the lever part.

2. The suction forceps according to claim 1, characterized in that: A movable seat is arranged in the mounting part, and a connecting cavity which passes through from front to back is formed in the movable seat. The proximal end of the clamp tube is sealed and connected with the connecting cavity and can rotate relative to the connecting cavity. The distal end of the suction hose is sealed and connected with the connecting cavity.

3. The suction forceps according to claim 2, characterized in that: The trigger includes a wrench and a connecting seat formed at the upper end of the wrench, the connecting seat is rotatably installed in the mounting portion, a vertical slide groove is formed on the connecting seat, the movable seat is slidably connected to the vertical slide groove, and a first elastic reset member is provided between the connecting seat and the mounting portion.

4. The suction forceps according to claim 3, characterized in that: The trigger further comprises an elastic stop portion, which is arranged to penetrate the mounting portion and is used to limit the pivoting of the wrench.

5. The suction forceps according to claim 2, characterized in that: A rotating member is arranged on the pipe section of the outer pipe extending out of the mounting portion, and rotating the rotating member drives the clamp piece hinged thereon to rotate together, thereby driving the clamp pipe to rotate together.

6. The suction forceps according to claim 4, characterized in that: The connecting seat includes a pivot portion and a left connecting plate and a right connecting plate connected to the left and right sides of the pivot portion, the left connecting plate and the right connecting plate respectively form a left slide groove and a right slide groove extending vertically, the pivot portion is pivotally mounted on the inner side of the mounting portion, and the movable seat forms a left sliding member and a right sliding member toward the left and right sides respectively, and the left sliding member and the right sliding member are slidably connected to the left slide groove and the right slide groove respectively.

7. The suction forceps according to claim 6, characterized in that: The outer tube is sealed with the opening of the mounting portion or the rotating member through a sealing ring.

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