An auxiliary grasping forceps for laparoscopic surgery

Abstract

The application discloses an auxiliary grasping clamp for laparoscopic surgery and belongs to the field of medical auxiliary instruments. The auxiliary grasping clamp for laparoscopic surgery comprises a connecting part and a grasping mechanism; the connecting part is fixedly connected with the grasping mechanism; one end of the grasping mechanism away from the connecting part is a grasping end, the grasping end comprises a plurality of sector monomers, the plurality of sector monomers are rotationally connected with the connecting part, so that the plurality of sector monomers can rotate in the same plane or in a plurality of parallel planes, the plane is parallel to the sector, so that the plurality of sector monomers can be unfolded or folded, and the plurality of sector monomers rotate to control the adjustable coverage range of the grasping end; the grasping mechanism is fixedly connected with a push-pull assembly, and the push-pull assembly controls the rotation of the sector monomers. It can change the grasping range of the grasping end of the grasping clamp according to the operation requirement, so as to adapt to different operation conditions.

Description

Technical Field

[0001] This invention belongs to the field of medical auxiliary devices, and more specifically, relates to an auxiliary grasping forceps for laparoscopic surgery. Background Technology

[0002] In rectal surgery, laparoscopic grasping forceps are often an essential auxiliary device used to grasp parts of the intestine or organs obstructing the view in the patient's abdominal cavity during the operation. Existing grasping forceps include, for example, a single-port laparoscopic ureteral retractor with patent number CN201920301264.9 and a double-headed laparoscopic grasping forceps with patent number CN201710162518.9. During the operation, the surgeon needs to use grasping forceps to move organs to find specific intestines or discover the problem.

[0003] During rectal surgery, surgeons use forceps to grasp and lift the rectum on the outside to prevent it from obstructing their view. However, the grasping range of existing forceps is fixed and limited, and the grasping area is small. When surgeons need to observe the rectum near the inner abdominal wall in the patient's abdominal cavity, the grasping range of the forceps is often insufficient, and it is impossible to grasp all the rectum that is obstructing the view. This results in insufficient observation field for the surgeon, affecting the observation efficiency and accuracy of the operation, and increasing the difficulty of the operation.

[0004] Furthermore, because the intestine itself has weight and the outer wall of the intestine is covered with mucus, the mucus reduces the friction between the intestine and the grasping forceps. Therefore, during the grasping process, the intestine is very easy to fall off the grasping forceps. The fall off the intestine obstructs the field of vision again, affecting the smooth progress of the operation. In addition, during the process of the intestine falling off the grasping forceps, the outer wall of the intestine rubs and scratches against the end of the grasping forceps, thereby damaging the intestine, causing infection, causing unnecessary damage, increasing the patient's recovery pressure and the degree of pain of the operation. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an auxiliary grasping forceps for laparoscopic surgery, which can make the grasping end of the grasping forceps change the grasping range according to the needs of the surgery to adapt to different surgical situations.

[0006] An auxiliary grasping forceps for laparoscopic surgery according to the present invention includes a connecting part and a grasping mechanism; the connecting part is fixedly connected to the grasping mechanism;

[0007] The end of the gripping mechanism furthest from the connecting part is the gripping end. The gripping end includes multiple fan-shaped units, each of which is rotatably connected to the connecting part, so that the multiple fan-shaped units can rotate in the same plane or in multiple parallel planes. The planes are parallel to the fan-shaped units, so that the multiple fan-shaped units can be unfolded or retracted, and the rotation of the multiple fan-shaped units can control the adjustable coverage of the gripping end.

[0008] The gripping mechanism is fixedly connected to a push-pull assembly, which controls the rotation of the individual fan-shaped components.

[0009] As a further improvement of the present invention, each fan-shaped unit is composed of a fixed plate and at least one rotating plate connected end to end. The fixed plate is located at one end of the fan-shaped unit near the connecting part, and the connection between the fixed plate and the rotating plate, and between the rotating plates, is rotatably connected by a rotating shaft. When the fan-shaped unit is in a free state, the length direction of the fixed plate and each rotating plate in the fan-shaped unit is consistent, and their lower surfaces are all in the same plane. Each fan-shaped unit is fixedly connected to a pulling mechanism, which controls the rotation of the rotating plate in the corresponding fan-shaped unit, and the rotation of each rotating plate is independent.

[0010] As a further improvement of the present invention, the connecting part includes an inner sleeve, and an accommodating chamber is formed inside the inner sleeve, both ends of which are closed; the gripping end is disposed on one end face of the inner sleeve; the push-pull assembly includes a driving mechanism and a push-pull rod; one end of the push-pull rod is fixedly connected to the driving mechanism, and the other end passes through the end face of the accommodating chamber and is connected to the fan-shaped unit, so that the movement of the push-pull rod controls the rotation of the fan-shaped unit; the driving mechanism is disposed in the accommodating chamber, and the driving mechanism controls the push-pull rod to move in a direction closer to or away from the fan-shaped unit.

[0011] As a further improvement of the present invention, the inner sleeve is made of a rigid material; the driving mechanism includes an inflation mechanism; an inflation chamber is provided inside the inflation mechanism, and the inflation mechanism is made of an elastic material so that the inflation mechanism can deform and return to its original shape; the inflation mechanism is disposed in the receiving chamber, one end of the inflation mechanism is fixedly connected to the push-pull rod, and an inflation opening is provided on the other end face, which is located on the end face of the inner sleeve away from the fan-shaped unit.

[0012] As a further improvement of the present invention, the gripping mechanism includes curved claw plates, connecting rods, and rotating wheels; the number of curved claw plates, connecting rods, and rotating wheels is the same.

[0013] Multiple rotating wheels are fixedly connected to the connecting part, and the distance between any two adjacent rotating wheels is equal; one end of the connecting rod is rotatably connected to the rotating wheel, and the other end of the connecting rod is fixedly connected to one end of the curved claw plate; the curved claw plate is plate-shaped, and the end of the curved claw plate away from the connecting rod is bent upward to form a claw shape.

[0014] As a further improvement of the present invention, a rotating rod is connected between every two connecting rods; the rotating rod is made of a rigid material, one end of the rotating rod is rotatably connected to one of the connecting rods, and the other end abuts against the surface of the other connecting rod, so that the rotation of the rotating rod can control the rotation of the connecting rod that abuts against it; at least one sliding groove is provided on the connecting rod along its length direction, at least one sliding groove is provided on its abutting side with the rotating rod, the size of the sliding groove matches the size of the rotating rod, so that the end of the rotating rod is engaged in the sliding groove, so that the rotating rod can slide in the sliding groove, and the end of the rotating rod cannot be disengaged from the sliding groove.

[0015] As a further improvement of the present invention, a plurality of side openings are provided on the end of the inner sleeve away from the fan-shaped unit. The plurality of side openings penetrate the surface of the inner sleeve so that each side opening is connected to the outside and the receiving chamber, so that the inflation mechanism can pass through the side opening to form a limiting protrusion after inflation. The plurality of side openings are arranged around the outer periphery of the receiving chamber, and the distance between any two adjacent side openings is equal.

[0016] An adjustment part is provided on the outer periphery of the inner sleeve. The adjustment part is engaged with the limiting protrusion so that the adjustment part controls the rotation direction of the inner sleeve, thereby controlling the gripping direction of the gripping end.

[0017] As a further improvement of the present invention, the adjusting part includes an outer tube and a supporting block; a sliding chamber is formed inside the outer tube, the sliding chamber is formed along the length direction of the outer tube, and both ends of the sliding chamber are open; a slot is formed on the inner wall of the outer tube, the number of slots is equal to the number of side openings, the curvature of the slot is equal to the curvature of the side opening, and multiple slots are evenly distributed along the outer periphery of the sliding chamber; an inner sleeve is disposed in the sliding chamber.

[0018] The number of support blocks is at least one, and the size of the support block matches the size between every two limiting protrusions; an elastic element connects the support block and the slot, one end of the elastic element is fixedly connected to the support block, and the other end is fixedly connected to the inner wall of the slot; and when the elastic element is in a free state, the support block part protrudes from the slot.

[0019] As a further improvement of the present invention, each support block is provided with a control chamber, which is opened along the length direction of the support block, and the length of the control chamber is equal to the length of the support block.

[0020] Multiple sets of traction mechanisms are slidably connected within at least one control chamber;

[0021] The traction mechanism includes control blocks and traction components; within each traction mechanism, the number of control blocks is the same as the number of rotating plates, and the number of traction components is the same as the number of rotating plates; the control blocks are slidably connected to the control chamber; one end of the traction component is fixedly connected to the corresponding control block, and the other end is fixedly connected to the corresponding rotating plate, so that one control block controls the rotation of one rotating plate.

[0022] As a further improvement of the present invention, the adjusting part includes an outer tube and a limiting block; a sliding chamber is formed inside the outer tube, the sliding chamber is formed along the length of the outer tube, and both ends of the sliding chamber are open; multiple slots are formed on the inner wall of the outer tube, and the multiple slots are evenly distributed along the outer periphery of the sliding chamber; an inner tube is disposed in the sliding chamber; the size of the limiting block matches the size between every two limiting protrusions, and a protrusion is provided on one end face of the limiting block, the size of the protrusion matching the size of the slot, so that the outer tube and the inner tube are fitted and connected by the limiting block.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] The push-pull assembly controls the rotation of the fan-shaped unit at different angles to control the adjustable coverage of the gripping end. This allows the gripping range of the gripping end to be adjusted according to the surgical needs, thus adapting to different surgical situations.

[0025] Furthermore, doctors can control the movement of the push-pull assembly to adjust the grasping range of the grasping mechanism according to the specific circumstances and needs of the surgery. During laparoscopic surgery, the organs in the patient's abdomen are often crowded together, and different organs need to be separated using grasping forceps due to different observation locations and depths. When the push-pull assembly controls the opening degree of the grasping mechanism to be large, the grasping range of the grasping mechanism is large, which can grasp larger organs and provide a larger field of view. When the push-pull assembly controls the opening degree of the grasping mechanism to be small, the grasping range of the grasping mechanism is small, which can grasp smaller organs and avoid misgrabbing due to an excessively large grasping range, making organ grasping more precise. Therefore, doctors can flexibly adjust the grasping range of the grasping mechanism according to factors such as the required field of view and the size of the organs to be grasped, making it widely applicable.

[0026] The surgeon can also control the grasping mechanism to grasp organs at a certain angle by adjusting the rotation angle between the inner and outer sleeves, which can adapt to some side grasping situations. After the grasping mechanism completes the grasping at a certain angle, the surgeon can insert the limiting block into the limiting groove. At this time, the protrusion of the limiting block is embedded in the groove, so that the inner sleeve is fixed inside the outer sleeve. The surgeon does not need to keep his hand to control the angle of the grasping mechanism, which is convenient to adjust and improves surgical efficiency. It also avoids the situation where the grasped organ falls off due to hand tremors or collisions and vibrations during manual handling, which could lead to surgical accidents.

[0027] The traction mechanism can independently control the rotation of different rotating plates on different fan-shaped units, allowing doctors to adjust the rotation length of the fan-shaped units according to the different grasping range and gripping degree required by the grasping mechanism, making it flexible. When it is necessary to grasp smaller organs, the rotation of the rotating plate far from the connecting part can be controlled. At this time, the length of rotation is shorter, and the gripping range is smaller, so that small organs are not easily dislodged. Therefore, the rotation of the rotating plates at different positions can be controlled according to the size of the organ to be grasped, so that the grasping range of the grasping mechanism is suitable for different surgical situations.

[0028] The doctor can also first control the rotating plate away from the connection to rotate, and then control the rotating plate closer to the connection to rotate. At this time, the rotating plate that rotates first and the rotating plate that rotates later can cooperate to form a ring or semi-ring, so that when the organ is held in the ring or semi-ring, it is held firmly and is not easy to fall off.

[0029] The gripping degree of different individual fan surfaces can be controlled independently, so that the gripping range and tightness of different parts of the gripping mechanism can be adjusted independently, making it widely applicable.

[0030] The push-pull assembly includes an inflation mechanism. Because the inflation mechanism can maintain a stable state after inflation, the grasping mechanism can autonomously maintain its grasping range during surgery, avoiding the need for the doctor to manually maintain the grasping state. Therefore, there is no need to have a dedicated assistant to control the laparoscope during surgery, reducing manpower requirements. At the same time, the rotation angle of the fan-shaped unit driven by the inflation mechanism can be precisely controlled according to the amount of gas introduced into the inflation mechanism, improving the accuracy of the surgery and thus contributing to the smooth progress of the surgery.

[0031] When the auxiliary grasping forceps need to be removed after the surgery, the grasping end can be controlled to retract to its minimum volume by pushing and pulling the component. After the grasping mechanism retracts, the inner sleeve is pulled out, and the grasping mechanism is then pulled out from the sliding chamber, thus avoiding direct contact between the grasping mechanism and the patient's abdominal cavity and abdominal opening, which could damage the abdominal cavity and abdominal opening. Attached Figure Description

[0032] Figure 1This is a schematic diagram of the structure of the present invention during operation;

[0033] Figure 2 This is a schematic diagram of the structure of the present invention when it is stored.

[0034] Figure 3 This is a schematic diagram of the internal structure of the present invention when it is stored.

[0035] Figure 4 This is a schematic diagram of the structure of the present invention when it is stored.

[0036] Figure 5 This is a schematic diagram of the internal structure of the present invention during operation;

[0037] Figure 6 This is a schematic diagram of the structure of the present invention during operation;

[0038] Figure 7 This is a schematic diagram of the limiting block structure of the present invention;

[0039] Figure 8 This is a schematic diagram of the internal structure of the present invention;

[0040] Figure 9 This is a schematic diagram of the enlarged internal structure of the present invention;

[0041] Figure 10 This is a schematic diagram of the internal structure of the present invention;

[0042] Figure 11 This is a schematic diagram of the enlarged internal structure of the present invention.

[0043] Figure 12 This is a side sectional view of the second specific embodiment of the present invention during operation;

[0044] Figure 13 This is a schematic diagram showing the connection between the support block and the curved claw piece in a specific embodiment two of the present invention;

[0045] Figure 14 This is a schematic diagram of the support block according to a specific embodiment two of the present invention;

[0046] Figure 15 This is a side view of the curved claw plate in a working state according to a specific embodiment 2 of the present invention;

[0047] Figure 16 This is a side view of the curved claw plate in a working state according to a specific embodiment 2 of the present invention;

[0048] Figure 17 This is a side view of the curved claw plate in a working state according to a specific embodiment 2 of the present invention;

[0049] Figure 18 This is a side sectional view of the third specific embodiment of the present invention during operation;

[0050] Figure 19 This is a schematic diagram of the support block according to a specific embodiment three of the present invention.

[0051] Explanation of the labels in the diagram:

[0052] 1. Outer tube, 11. Slot, 12. Support block, 121. First control block, 122. Second control block, 13. Elastic rod.

[0053] 2. Inner sleeve, 21. Side opening, 22. Limiting buckle,

[0054] 3. Gripping mechanism; 31. Curved claw plate; 311. Rotating shaft; 312. First rotating plate; 313. Second rotating plate; 314. Third fixed plate; 32. Connecting rod; 33. Rotating wheel; 34. Rotating rod.

[0055] 41 Inflation mechanism, 411 Inflation opening, 42 Connecting block, 43 Push-pull rod,

[0056] 5 limit blocks. Detailed Implementation

[0057] Specific Implementation Example 1: Please refer to Figure 1-11 An auxiliary grasping forceps for laparoscopic surgery includes an outer sheath 1, an inner sheath 2, a grasping mechanism 3, and a limiting block 5.

[0058] The outer tube 1 is a cylindrical tube, and a cylindrical sliding chamber is opened inside the outer tube 1. The sliding chamber is opened along the length of the outer tube 1, and both ends of the sliding chamber are open.

[0059] Multiple slots 11 are provided on the inner wall of the outer tube 1. Each slot 11 is provided along the length of the outer tube 1, and the multiple slots 11 are evenly distributed along the outer periphery of the sliding chamber.

[0060] The inner sleeve 2 is cylindrical and made of rigid material. The inner sleeve 2 has a cylindrical receiving chamber inside, and both ends of the receiving chamber are closed.

[0061] Multiple side openings 21 are provided on one end of the inner sleeve 2. The multiple side openings 21 penetrate the surface of the inner sleeve 2 so that each side opening 21 connects the outside to the receiving chamber. The multiple side openings 21 are evenly arranged around the outer periphery of the receiving chamber, and the distance between any two adjacent side openings 21 is equal.

[0062] A limiting buckle 22 is fixedly connected to the end face of the inner sleeve 2 near the side opening 21. The limiting buckle 22 is made of rigid material and is U-shaped, including a horizontal part and two vertical parts. The horizontal part is arranged along the radial direction of the inner sleeve 2, and the ends of the two vertical parts are fixedly connected to the two ends of the horizontal part, and the other ends of the vertical parts extend along the length direction of the inner sleeve 2. The distance between the two vertical parts is equal to the outer diameter of the outer sleeve 1, so that when the inner sleeve 2 is placed inside the outer sleeve 1, the limiting buckle 22 is engaged with the outer sleeve 1 to prevent the inner sleeve 2 from being unable to be taken out after it is completely inserted into the outer sleeve 1 or from slipping off from the other end of the outer sleeve 1.

[0063] The gripping mechanism 3 is located at the other end of the inner sleeve 2. The gripping mechanism 3 includes a curved claw 31, a connecting rod 32, and a rotating wheel 33.

[0064] There are multiple rotating wheels 33, all of which are fixedly connected to the end face of the inner sleeve 2 away from the side opening 21, and the distance between any two adjacent rotating wheels 33 is equal; in this embodiment, there are three rotating wheels 33.

[0065] The connecting rod 32 is made of rigid material; the number of connecting rods 32 is equal to the number of rotating wheels 33, one connecting rod 32 is connected to one rotating wheel 33, one end of the connecting rod 32 is rotatably connected to the rotating wheel 33 so that multiple connecting rods 32 can spread outward or retract inward in the same plane; the other end of the connecting rod 32 is fixedly connected to one end of the curved claw piece 31 so that the curved claw piece 31 and the connecting rod 32 move together.

[0066] The curved claw plate 31 is made of rigid material; the number of curved claw plates 31 is equal to the number of rotating wheels 33, and one curved claw plate 31 is connected to a connecting rod 32; the curved claw plate 31 is plate-shaped, and the end of the curved claw plate 31 away from the connecting rod 32 is bent upward to form a claw shape, and the end of the curved claw plate 31 away from the connecting rod 32 has a smooth blunt end structure to protect the contact surface that contacts the curved claw plate 31 from damage.

[0067] It should be noted that when the connecting rods 32 are all in a parallel state or when the connecting rods 32 on both sides move closer to the connecting rod 32 in the middle, the gripping mechanism 3 is in a retracted state and the volume of the gripping mechanism 3 is at its minimum. At this time, it is necessary to ensure that the size of the gripping mechanism 3 is less than or equal to the size of the sliding chamber so that the gripping mechanism 3 can be retracted into the sliding chamber.

[0068] A rotating rod 34 is rotatably connected to the connecting rod 32 in the middle. The rotating rod 34 is made of rigid material. There are two rotating rods 34, which are respectively set on both sides of the connecting rod 32. One end of the rotating rod 34 is rotatably connected to the connecting rod 32, and the other end abuts against the surface of the connecting rod 32 on the same side, so that the rotation of the rotating rod 34 can control the rotation of the connecting rod 32 on the same side.

[0069] Furthermore, a groove is provided on the connecting rod 32 along its length. The groove is located on the side close to the rotating rod 34. The size of the groove matches the size of the rotating rod 34 so that the end of the rotating rod 34 is engaged in the groove, allowing the rotating rod 34 to slide within the groove, and the end of the rotating rod 34 cannot detach from the groove.

[0070] An inflation mechanism 41 is provided in the receiving chamber. An inflation chamber is opened inside the inflation mechanism 41. The inflation mechanism 41 is made of an elastic membrane so that the inflation volume of the inflation mechanism 41 increases, the inflation mechanism 41 expands along the length of the receiving chamber, the inflation mechanism 41 deflates and shrinks, and the inflation mechanism 41 contracts along the length of the receiving chamber.

[0071] An inflation opening 411 is provided on the inflation mechanism 41. The inflation opening 411 connects the inflation chamber to the outside. The inflation opening 411 is located on the end face of the inner sleeve 2 near the side opening 21, so that the user can inflate or deflate the inflation assembly 41 through the inflation opening 411.

[0072] A connecting block 42 is fixedly connected to one end of the inflation mechanism 41 away from the inflation opening 411. The connecting block 42 is made of rigid material, is disc-shaped, and has an outer diameter equal to the inner diameter of the inner sleeve 2. The connecting block 42 is slidably connected inside the inner sleeve 2, and the outer wall of the connecting block 42 is in contact with the inner wall of the inner sleeve 2. When the inflation mechanism 41 expands, the connecting block 42 slides toward the gripping mechanism 3, and when the inflation mechanism 42 contracts, the connecting block 42 slides away from the gripping mechanism 3.

[0073] One end of a push-pull rod 43 is fixedly connected to the end of the connecting hole 42 away from the inflation mechanism 41. The push-pull rod 43 is arranged along the length direction of the inner sleeve 2 so that the sliding of the connecting block 42 can control the movement of the push-pull rod 43 along the length direction. The push-pull rod 43 is made of rigid material, and the number of push-pull rods 43 is equal to the number of rotating rods 34 so that the other end of the push-pull rod 43 passes through the end face of the inner sleeve 2 and is fixedly connected to the corresponding rotating rod 34 so that the movement of the push-pull rod 43 can control the rotation of the rotating rod 34.

[0074] It should be noted that when the inflation mechanism 41 is in the retracted state, the push-pull rod 43 controls the rotating rod 34 to be located at the end of the connecting rod 32 near the inner sleeve 2. At this time, the gripping mechanism 3 is in the retracted state, and the volume of the gripping mechanism 3 is at its minimum.

[0075] It should be noted that when the inflation mechanism 41 is inflated, it expands and overflows from the end opening 21 away from the gripping mechanism 3, so that the inflation mechanism 41 forms multiple limiting protrusions on the outside of the inner sleeve 2, such as... Figure 5 As shown, the limiting protrusion protrudes towards the inner wall of the outer tube 1. After the inflation mechanism 41 is inflated, the limiting protrusion abuts against the inner wall of the outer tube 1.

[0076] Between every two limiting protrusions is a limiting groove. The size of the limiting block 5 matches the size of the limiting groove so that the limiting block 5 is set in the limiting groove and the outer surface of the limiting block 5 abuts against the outer surface of the limiting protrusion.

[0077] The limiting block 5 has a protrusion on the side near the inner wall of the outer sleeve 1. The size of the protrusion matches the size of the slot 11 so that the protrusion and the slot 11 fit together and are fixed inside the outer sleeve 1. At this time, the limiting block 5 restricts the rotation of the inner sleeve 2.

[0078] Working principle: During laparoscopic surgery, after the doctor makes an incision in the patient's abdomen, the outer tube 1 and the inner tube 2 are inserted into the patient's abdominal cavity through the incision. At this time, the insertion end of the outer tube 1 is far away from the end with the slot 11, and the insertion end of the inner tube 2 is connected to the grasping mechanism 3. At this time, the grasping mechanism 3 is in a retracted state and is located in the sliding cavity.

[0079] The doctor pushes the inner cannula 2 into the patient's abdominal cavity until the grasping mechanism 3 leaves the sliding chamber and is completely inside the patient's abdominal cavity. At this time, the grasping mechanism 3 is in the retracted state. At this time, the limiting buckle 22 is engaged with the outer surface of the outer cannula 1 to prevent the inner cannula 2 from being unable to be removed after it is completely inside the outer cannula 1 or from sliding down from the other end of the outer cannula into the patient's abdominal cavity.

[0080] The doctor uses an inflation machine to inflate the inflation mechanism 41 through the inflation opening 411. As the inflation mechanism 41 expands, a limiting protrusion appears on the surface of the inner sleeve 2, abutting against the inner wall of the outer sleeve 1. Furthermore, as inflation increases, the connecting block 42 slides towards the gripping mechanism 3, driving the push-pull rod 43 to slide towards the gripping mechanism 3. During this sliding process, the push-pull rod 43 drives the rotating rod 34 to rotate away from the inner sleeve 2, thereby forcing the gripping mechanism 3 to open. Figure 10 As shown, at this time, the organs in the patient's abdominal cavity, such as the large intestine, can be grasped by the grasping mechanism 3 to prevent the trachea in the patient's body from being squeezed together and affecting the field of vision.

[0081] Furthermore, due to the varying degrees of expansion of the inflation mechanism 41, the distance the connecting block 42 controls the push-pull rod 43 to move also varies, resulting in different rotation angles of the connecting rod 32. This means that the more air the inflation mechanism 41 inflates, the greater the opening degree of the grasping mechanism 3, and the larger its grasping range. In this case, larger organs can be grasped, providing a wider field of view. Conversely, when the inflation mechanism 41 inflates only a small amount, the grasping mechanism 3 opens less, and its grasping range is smaller. This allows for the grasping of smaller organs, avoiding accidental grasping due to an excessively large grasping range. Therefore, doctors can flexibly adjust the grasping range of the grasping mechanism 3 based on factors such as the required field of view and the size of the organ to be grasped, making it widely applicable.

[0082] In addition, the doctor can rotate the inner cannula 2 at a certain angle. At this time, the gripping direction of the grasping mechanism 3 will rotate synchronously to adapt to the situation where a side grip is required. After the grasping mechanism 3 completes the gripping at a certain angle, the doctor will insert the limiting block 5 into the limiting groove. At this time, the protrusion of the limiting block 5 is embedded in the slot 11, so that the inner cannula 2 is fixed in the outer cannula 1. The doctor does not need to keep his hand to control the angle of the grasping mechanism 3 to remain unchanged. The adjustment is convenient and improves the efficiency of the operation. At the same time, it avoids the situation where the grasped organ falls off due to hand tremors or angle deviation caused by collisions or vibrations during manual hand holding.

[0083] When the auxiliary grasping forceps need to be removed after the surgery, the doctor uses the air extraction mechanism to extract air from the air opening 411. At this time, the gas in the air extraction mechanism 41 is extracted, and the volume of the air extraction mechanism 41 decreases. Since the air extraction mechanism 41 is made of an elastic membrane, as the volume decreases, the connecting block 42 moves away from the grasping mechanism 3 under the traction of the air extraction mechanism 41, so as to control the grasping mechanism 3 to retract. After the grasping mechanism 3 retracts, the inner sleeve 2 is pulled out, and the grasping mechanism 3 is then pulled out from the sliding chamber, avoiding the situation where the grasping mechanism 3 directly contacts the patient's abdominal cavity and abdominal opening, causing damage to the abdominal cavity and abdominal opening.

[0084] Specific Implementation Example 2: Unlike Specific Implementation Example 1, please refer to... Figure 12-17 ;

[0085] The curved claw plate 31 includes a rotating shaft 311, a first rotating plate 312, a second rotating plate 313, and a third fixed plate 314. The third fixed plate 314, the second rotating plate 313, and the first rotating plate 312 are arranged sequentially from the end near the connecting rod 32 to the end away from the connecting rod 32. The end of the first rotating plate 312 away from the connecting rod 32 is bent upward so that the curved claw plate 31 is a claw-shaped plate with the end away from the connecting rod 32 bent upward.

[0086] There are two rotating shafts 311, which are rotatably connected between the third fixed plate 314 and the second rotating plate 313, and between the second rotating plate 313 and the first rotating plate 312, so that the second rotating plate 313 and the first rotating plate 312 can rotate independently; and the rotating shafts 311 restrict the downward rotation of the first rotating plate 312 and the second rotating plate 313, so that the first rotating plate 312 and the second rotating plate 313 can only rotate upward around the rotating shafts 311. When the first rotating plate 312 and the second rotating plate 313 remain horizontal, the first rotating plate 312 and the second rotating plate 313 are locked in downward rotation.

[0087] It should be noted that the number of rotating plates on the curved claw plate 31 can be multiple, so that the curved claw plate 31 can be adjusted to different gripping degrees, and the more rotating plates there are, the wider the adjustment range of the gripping degree of the curved claw plate 31 is; in this embodiment, there are two rotating plates, namely the first rotating plate 312 and the second rotating plate 313.

[0088] The number of slots 11 inside the outer tube 1 is equal to the number of side openings 21. Multiple slots 11 are evenly arranged around the outer periphery of the sliding chamber. Each slot 11 is an arc-shaped opening that opens near the center. The arc of the slot 11 is equal to the arc of the side opening 21. Since multiple side openings 21 are evenly arranged around the outer periphery of the receiving chamber, when the inflation mechanism 41 inflates to form a limiting protrusion, the arc of both the limiting protrusion and the limiting groove is equal to the arc of the slot 11.

[0089] It should be noted that the number of slots 11 and the number of side openings 21 are adjustable, thus increasing the number of slots 11 and side openings 21 to allow the gripping mechanism 3 to rotate and maintain a wider range of angles; in this embodiment, the number of slots 11 and side openings 21 is five.

[0090] The number of support blocks 12 is equal to the number of curved claw pieces 31. In this embodiment, there are three support blocks 12. The three support blocks 12 are slidably disposed in the corresponding slots 11. The size of the support blocks 12 matches the size of the slots 11, and the sidewall of the support blocks 12 fits against the inner wall of the slots 11 so that the support blocks 12 can be fully inserted into the slots 11. The size of the support blocks 12 matches the size of the limiting groove so that when the support blocks 12 are disposed in the limiting groove, the outer wall of the support blocks 12 fits against the inner wall of the limiting groove.

[0091] Each support block 12 is fixedly connected to a corresponding slot 11 with an elastic rod 13. The elastic rod 13 is made of elastic material. One end of the elastic rod 13 is fixedly connected to the inner wall of the slot 11, and the other end is fixedly connected to the support block 12. When the elastic rod 13 is in a free state, the support block 12 is partially protruding from the slot 11.

[0092] Each support block 12 has a control chamber inside. The control chamber is opened along the length direction of the support block 12, and the length of the control chamber is equal to the length of the support block 12, so that the control chamber is open at only its two ends in the length direction.

[0093] Each of the inner control chambers is slidably connected with a first control block 121 and a second control block 122;

[0094] The lower surface of the second control block 122 is in contact with the upper surface of the control chamber. The length of the second control block 122 is equal to the length of the control chamber, and the curvature of the second control block 122 is equal to the curvature of the control chamber, so that the side wall of the second control block 122 is in contact with the inner wall of the control chamber.

[0095] The first control block 121 is disposed on the upper side of the second control block 122, and the length of the first control block 121 is equal to the length of the control chamber, and the curvature of the first control block 121 is equal to the curvature of the control chamber, so that the side wall of the first control block 121 fits against the inner wall of the control chamber.

[0096] The outer tube 1 is also equipped with a pull line inside. The pull line is made of flexible material and there are multiple pull lines. The multiple pull lines are respectively set between the support block 12 and the bent claw piece 31.

[0097] Multiple pull lines connect the corresponding support blocks 12 and curved claw pieces 31;

[0098] Furthermore, within the same set of support blocks 12 and curved claw plates 31, pull lines connect the first control block 121 to the first rotating plate 312 and the second control block 122 to the second rotating plate 313, respectively, so that the first control block 121 controls the rotation of the first rotating plate 312 and the second control block 122 controls the rotation of the second rotating plate 313; and when the first control block 121 is fully installed in the control chamber, the first rotating plate 312 remains horizontal, and when the second control block 122 is fully installed in the control chamber, the second rotating plate 313 remains horizontal.

[0099] Working principle: The doctor pushes the inner cannula 2 into the patient's abdominal cavity until the grasping mechanism 3 leaves the sliding chamber and is fully inside the patient's abdominal cavity; the doctor uses an inflation machine to inflate the inflation mechanism 41 through the inflation opening 411, so that the limiting protrusion abuts against the inner wall of the outer cannula 1, and the grasping mechanism 3 opens, as... Figure 10 As shown, at this time:

[0100] The elastic rod 13 is in a free state. Part of the support block 12 protrudes from the slot 11, and the other part of the support block 12 is embedded in the slot 11. The part of the support block 12 protruding from the slot 11 is embedded in the limiting groove, so that the support block 12 restricts the rotation of the inner tube 2. When the doctor needs to rotate the inner tube 2 to adjust the gripping angle of the gripping mechanism 3, the doctor presses the support block 12 into the slot 11 until the support block 12 is completely inserted into the groove 11. At this time, the angle of the inner tube 2 can be rotated, and after rotating a certain angle, the support block 12 is released so that the support block 12 enters another limiting groove, so that the gripping mechanism 3 maintains the gripping angle.

[0101] The first control block 121 and the second control block 122 are both located in the control chamber. The lower surfaces of the first rotating plate 312, the second rotating plate 313, and the third fixing plate 314 are all located in the same plane. When the doctor pulls the first control block 121 away from the connecting rod 32, the first rotating plate 312 rotates upward. When the doctor pulls the second control block 122 away from the connecting rod 32, the second rotating plate 313 rotates upward. At this time, the first rotating plate 312 rotates synchronously. The lower surfaces of the first rotating plate 312 and the second rotating plate 313 are located in the same plane. Therefore, the doctor can control the different rotation lengths of the curved claw plate 31 according to the different grasping ranges and gripping degrees required by the grasping mechanism 3. The adjustment is flexible. At the same time, the rotation of the first rotating plate 312 and / or the second rotating plate 313 makes the organ on the curved claw plate 31 more firmly grasped, so as to avoid the organ slipping.

[0102] Furthermore, the gripping degree of different curved claw plates 31 can be independently controlled, so that the gripping range and tightness of different parts of the grasping mechanism 3 when grasping organs can be independently adjusted, which is suitable for a variety of surgical situations and has a wide range of applications.

[0103] Specific Implementation Example 3: Unlike Specific Implementation Example 2, please refer to... Figure 18-19 The number of support blocks 12 is one, and the control chamber of the support block 12 is provided with three sets of control components, which correspond to the three curved claw pieces 31 respectively.

[0104] Each control unit consists of an upper control block and a lower control block;

[0105] The pull wires inside the outer tube 1 connect the upper control block to the corresponding first rotating piece 312 and the lower control block to the corresponding second rotating piece 313, so that in the corresponding control components and the bent claw piece 31, the upper control block controls the rotation of the first rotating piece 312 and the lower control block controls the rotation of the second rotating piece 313; and when the upper control block is fully installed in the control chamber, the first rotating piece 312 remains horizontal, and when the lower control block is fully installed in the control chamber, the second rotating piece 313 remains horizontal.

[0106] Working principle: All three control components are set inside the same support block 12, so that the number of support blocks 12 inside the outer sleeve 1 can be as small as one. One support block 12 is convenient to control. When in use, you only need to press one support block 12 into the limiting groove to rotate the inner sleeve 2 to adjust the gripping angle of the gripping mechanism 3. At the same time, the three control components are centrally set. When the doctor adjusts the gripping degree of different curved claw pieces 31, the operating area when the doctor adjusts the upper control block and the lower control block is only the area where the support block 12 is located. This avoids the inconvenience caused by multiple operating areas and also avoids the situation where the doctor's hands are not enough when all three curved claw pieces 31 need to be adjusted at the same time. This makes the operation faster and more convenient.

Claims

1. An auxiliary grasping forceps for laparoscopic surgery, characterized by: The connecting part is fixedly connected with the grabbing mechanism (3); The end of the grabbing mechanism (3) away from the connecting part is a grabbing end, which comprises a plurality of fan units, each of which is rotatably connected with the connecting part, so that the plurality of fan units can rotate in the same plane or in a plurality of parallel planes, the plane being parallel to the fan, so that the plurality of fan units can be unfolded or folded, and the rotation of the plurality of fan units can control the adjustable coverage of the grabbing end; The grabbing mechanism (3) is fixedly connected with a push-pull assembly, which controls the rotation of the fan units; Each fan unit is composed of a fixed sheet and at least one rotating sheet in a head-to-tail manner, the fixed sheet is arranged at one end of the fan unit close to the connecting part, and the fixed sheet and the rotating sheet, and the rotating sheet and the rotating sheet are rotatably connected through rotating shafts; When the fan unit is in a free state, the length directions of the fixed sheet and each rotating sheet in the fan unit are consistent, and the lower surfaces are in the same plane; each fan unit is fixedly connected with a pulling mechanism, which controls the rotation of the rotating sheet in the corresponding fan unit, and the rotation of each rotating sheet is independent; The connecting part comprises an inner sleeve (2), the inner sleeve (2) is internally provided with a containing chamber, both ends of the containing chamber are closed; the grabbing end is arranged on one end face of the inner sleeve (2); the push-pull assembly comprises a driving mechanism and a push-pull rod (43); one end of the push-pull rod (43) is fixedly connected with the driving mechanism, the other end penetrates through the end face of the containing chamber and is connected with the fan unit, so that the movement of the push-pull rod (43) controls the rotation of the fan unit; the driving mechanism is arranged in the containing chamber, and the driving mechanism controls the movement of the push-pull rod (43) towards or away from the fan unit; A plurality of side openings (21) are arranged on the end of the inner sleeve (2) away from the fan unit, the plurality of side openings (21) penetrate the surface of the inner sleeve (2), so that each side opening (21) is in communication with the outside and the containing chamber, so that the inflation mechanism (41) forms a limiting protrusion after expansion through the side opening (21); the plurality of side openings (21) are arranged around the containing chamber, and the distance between any two adjacent side openings (21) is equal; The outer periphery of the inner sleeve (2) is provided with an adjusting part, which is embeddedly connected with the limiting protrusion, so as to control the rotating direction of the inner sleeve (2) and the grabbing direction of the grabbing end.

2. The auxiliary grasping forceps for laparoscopic surgery according to claim 1, characterized in that: The inner sleeve (2) is made of rigid material; the driving mechanism comprises an inflation mechanism (41); the inflation mechanism (41) is internally provided with an inflation chamber, and the inflation mechanism (41) is made of elastic material, so that the inflation mechanism (41) can be deformed and reset; the inflation mechanism (41) is arranged in the containing chamber, one end of the inflation mechanism (41) is fixedly connected with the push-pull rod (43), and the other end face is provided with an inflation opening (411), which is arranged on the end face of the inner sleeve (2) away from the fan unit.

3. The auxiliary grasping forceps for laparoscopic surgery according to claim 1, characterized in that: The grabbing mechanism (3) comprises a curved claw sheet (31), a connecting rod (32) and a rotating wheel (33); the number of the curved claw sheet (31), the connecting rod (32) and the rotating wheel (33) is the same. A plurality of rotating wheels (33) are fixedly connected to the connecting portion, and the distance between any two adjacent rotating wheels (33) is equal; one end of the connecting rod (32) is rotatably connected to the rotating wheel (33), and the other end of the connecting rod (32) is fixedly connected to one end of the bent claw piece (31); the bent claw piece (31) is in a sheet shape, and the end of the bent claw piece (31) away from the connecting rod (32) is bent upward to form a claw shape.

4. The auxiliary grasping forceps for laparoscopic surgery according to claim 3, characterized in that: A rotating rod (34) is connected between every two connecting rods (32); the rotating rod (34) is made of a rigid material, one end of the rotating rod (34) is rotatably connected to one of the connecting rods (32), and the other end is abutted against the surface of the other connecting rod (32), so that the rotation of the rotating rod (34) can control the rotation of the connecting rod (32) abutted against it; at least one sliding groove is formed in the connecting rod (32) along the length direction, the at least one sliding groove is formed on the abutted side of the connecting rod (32) and the rotating rod (34), the size of the sliding groove matches the size of the rotating rod (34), so that the end of the rotating rod (34) is clamped in the sliding groove, and the end of the rotating rod (34) cannot be separated from the sliding groove.

5. The auxiliary grasping forceps for laparoscopic surgery according to claim 1, characterized in that: The adjusting portion comprises an outer sleeve (1) and a support clamping block (12); a sliding chamber is formed in the inner part of the outer sleeve (1), the sliding chamber is formed along the length direction of the outer sleeve (1), and both ends of the sliding chamber are open; a clamping groove (11) is formed on the inner wall of the outer sleeve (1), the number of the clamping grooves (11) is equal to the number of the side openings (21), the curvature of the clamping grooves (11) is equal to the curvature of the side openings (21), and a plurality of clamping grooves (11) are evenly distributed along the outer periphery of the sliding chamber; an inner sleeve (2) is arranged in the sliding chamber; The number of the support clamping blocks (12) is at least one, and the size of the support clamping blocks (12) matches the size between every two limiting protrusions; an elastic member is connected between the support clamping block (12) and the clamping groove (11), one end of the elastic member is fixedly connected to the support clamping block (12), and the other end is fixedly connected to the inner wall of the clamping groove (11); and when the elastic member is in a free state, the support clamping block (12) partially protrudes from the clamping groove (11).

6. The auxiliary grasping forceps for laparoscopic surgery according to claim 5, characterized in that: A control chamber is formed in each support clamping block (12), the control chamber is formed along the length direction of the support clamping block (12), and the length of the control chamber is equal to the length of the support clamping block (12); A plurality of pulling mechanisms are slidingly connected in at least one control chamber; The pulling mechanism comprises a control clamping block and a pulling member; in each pulling mechanism, the number of the control clamping blocks is consistent with the number of the rotating pieces, and the number of the pulling members is consistent with the number of the rotating pieces; the control clamping block is slidingly connected to the control chamber; one end of the pulling member is fixedly connected to the corresponding control clamping block, and the other end is fixedly connected to the corresponding rotating piece, so that one control clamping block controls the rotation of one rotating piece.

7. The auxiliary grasping forceps for laparoscopic surgery according to claim 1, characterized in that: The adjusting part comprises an outer sleeve (1) and a limiting block (5); the inner part of the outer sleeve (1) is provided with a sliding chamber, the sliding chamber is provided along the length direction of the outer sleeve (1), and both ends of the sliding chamber are open; a plurality of clamping grooves (11) are provided on the inner wall of the outer sleeve (1), and the plurality of clamping grooves (11) are evenly distributed along the outer periphery of the sliding chamber; an inner sleeve (2) is arranged in the sliding chamber; the size of the limiting block (5) is matched with the size between every two limiting protrusions, and a protrusion is arranged on one end surface of the limiting block (5), the size of the protrusion is matched with the size of the clamping groove (11), so that the outer sleeve (1) and the inner sleeve (2) are embeddedly connected through the limiting block (5).

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