A laparoscopic kidney gripper

Abstract

This invention discloses a laparoscopic kidney gripper, comprising a barrel for passing through a laparoscope into the human body and a shell-like body connected thereto; the barrel is retractably fitted with several proximal negative pressure mechanisms and distal traction tubes for adsorbing the kidney; a control mechanism for adjusting the extension and retraction of the traction tubes is installed inside the gun body. Compared to the prior art that uses rigid laparoscopic gastric or intestinal forceps to grip the kidney, this application uses negative pressure suction to form a connection, thereby avoiding slippage and compression damage to the kidney that may occur during clamping connections, thus reducing the difficulty of operation for doctors and the risk of kidney damage to patients.

Description

Technical Field

[0001] This invention relates primarily to the field of medical device technology, and more particularly to a laparoscopic kidney gripper. Background Technology

[0002] In clinical laparoscopic surgery, due to the lack of specialized instruments for grasping the kidneys, laparoscopic gastric forceps or laparoscopic intestinal forceps are typically used. These forceps are designed with a rigid, clamp-like structure to securely grasp soft, hollow organs like the stomach and intestines. However, the kidney is a smooth, relatively hard, solid organ. Using rigid, clamp-like forceps can lead to slippage on the kidney surface during traction if the gripping force is insufficient, resulting in an unstable grasp. Conversely, excessive gripping force can damage the kidney. Therefore, using laparoscopic gastric or intestinal forceps to grasp the kidney using current techniques presents significant operational challenges, demanding high levels of skill from clinicians and posing a risk of kidney injury to patients. Thus, there is an urgent need for a laparoscopic kidney grasping instrument suitable for smooth, relatively hard, solid organs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a laparoscopic kidney grasper.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A laparoscopic kidney gripper includes a barrel for passing through a laparoscope into the human body and a shell-shaped gun body connected thereto; the barrel is retractably provided with a plurality of proximal negative pressure mechanisms and distal traction tubes for adsorbing the kidney; the gun body is equipped with a control mechanism for adjusting the degree of extension and retraction of the traction tubes.

[0006] As a further improvement to the above technical solution:

[0007] The barrel is divided into several cavities along its length by the valve wall, and a traction tube is inserted into each of the cavities.

[0008] The gun body and the gun barrel are detachably connected.

[0009] The negative pressure mechanism includes a three-way pipe, the first end of which is connected to an external negative pressure generator, the second end of which is connected to each traction pipe, and the third end of which is equipped with a safety valve for adjusting the negative pressure attraction and emergency pressure release.

[0010] The safety valve includes a sleeve formed at the end of a three-way pipe and extending out of the gun body. The two ends of the sleeve are connected by a bypass pipe, and the end of the sleeve is threaded with a valve cover with air holes. The valve cover is pulled by a spring and is built into a slider inside the sleeve.

[0011] The distal end of the traction tube is connected to a suction cup for adsorbing the kidney; the suction cup includes several radially arranged elastic retractable skeleton rods, and each adjacent skeleton rod is connected by a flexible web membrane.

[0012] The control mechanism includes several triggers hinged to the gun body, and each trigger pulls a corresponding traction tube via a rope.

[0013] Each of the aforementioned traction tubes is fitted with a separate elastic tube, and the rope connected to the trigger is connected to the separate elastic tube.

[0014] The control mechanism includes a lever hinged to the gun body, which pulls each traction tube simultaneously via a rope.

[0015] Each of the aforementioned traction tubes is fitted with a common elastic tube, and the rope connected to the lever is connected to the common elastic tube.

[0016] Compared with the prior art, the advantages of the present invention are as follows:

[0017] The laparoscopic gun barrel is inserted into the patient's body from outside the body. The surgeon holds the gun and controls the insertion depth and angle of the barrel, and can individually adjust the length of each flexible traction tube extending from the distal end of the gun barrel via a control mechanism. The proximal end of the traction tube is connected to a negative pressure mechanism. When the distal end of the traction tube is in contact with the kidney, the negative pressure within the traction tube can attract the kidney, thus forming a stable connection. The surgeon then manipulates the gun and control mechanism to change the traction effect of the traction tube on the kidney (including changing the direction of traction, the rotation angle, and the traction force, etc.) to facilitate the surgery. Compared to existing technologies that use rigid laparoscopic gastric or intestinal forceps to grasp the kidney, this application uses negative pressure suction to form a connection, thereby avoiding slippage and compression damage to the kidney that may occur with clamping connections, thus reducing the difficulty of the surgeon's operation and the risk of kidney damage to the patient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a laparoscopic kidney grasper;

[0019] Figure 2 This is a schematic diagram of using a laparoscopic kidney grasper to grasp the kidney;

[0020] Figure 3 This is a partial structural diagram of the laparoscopic kidney grasper (traction tube in relaxed state);

[0021] Figure 4 This is a schematic diagram of the working principle of the negative pressure mechanism (normal negative pressure state inside the tee pipe);

[0022] Figure 5This is a schematic diagram of the working principle of the negative pressure mechanism (when the negative pressure inside the tee pipe is too high);

[0023] Figure 6 This is a partial structural diagram of a laparoscopic kidney grasper (the trigger controls the bending state of a single traction tube);

[0024] Figure 7 This is a partial structural diagram of the laparoscopic kidney grasper (the lever controls the bending state of all traction tubes);

[0025] Figure 8 This is a partial structural diagram of a laparoscopic kidney grasper (the lever and trigger simultaneously control the bending state of the traction tube);

[0026] Figure 9 This is a cross-sectional view of the gun barrel;

[0027] Figure 10 This is a schematic diagram of the suction cup 41.

[0028] The labels in the diagram represent: 1. Barrel; 11. Valve wall; 12. Lumen; 2. Gun body; 3. Negative pressure mechanism; 31. Three-way valve; 32. Safety valve; 321. Sleeve; 322. Bypass valve; 323. Valve cover; 324. Spring; 325. Slider; 33. Airbag; 4. Traction tube; 41. Suction cup; 411. Skeleton rod; 412. Web membrane; 5. Control mechanism; 51. Trigger; 52. Rope; 53. Individual elastic tube; 54. Lever; 55. Main elastic tube. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1 to 10As shown, the laparoscopic kidney gripper of this embodiment includes a barrel 1 for penetrating the laparoscope into the human body and a shell-shaped gun body 2 connected thereto. Several proximal negative pressure mechanisms 3 and distal traction tubes 4 for adsorbing the kidney are retractably inserted into the barrel 1. A control mechanism 5 for adjusting the extension and retraction of the traction tubes 4 is installed inside the gun body 2. The barrel 1 is inserted into the patient's body through the laparoscope. The surgeon holds the gun body 2 to control the insertion depth and angle of the barrel 1 and can change the length of each flexible traction tube 4 extending from the distal end of the barrel 1 through the control mechanism 5. The proximal end of the traction tube 4 is connected to the negative pressure mechanism 3. When the distal end of the traction tube 4 is in contact with the kidney, the negative pressure inside the traction tube 4 can attract the kidney, thus forming a stable connection. The surgeon then manipulates the gun body 2 and the control mechanism 5 to change the traction effect of the traction tube 4 on the kidney (including changing the traction direction, rotation angle, and traction force, etc.) to facilitate the surgery. Compared to existing technologies that use rigid laparoscopic gastric forceps or laparoscopic intestinal forceps to grasp the kidney, this application uses negative pressure suction to form a connection, thereby avoiding slippage and compression damage to the kidney that may occur during clamping connection, thus reducing the difficulty of operation for doctors and the risk of kidney damage to patients.

[0031] In this embodiment, the barrel 1 is divided into several cavities 12 along its length by a flap wall 11, and each cavity 12 is fitted with a traction tube 4. Since there may be multiple traction tubes 4, in order to avoid them getting tangled inside the barrel 1 and affecting operation, a flap wall 11 is provided along the length of the barrel 1. The barrel 1 divided by the flap wall 11 forms several cavities 12. The number of cavities 12 is consistent with the number of traction tubes 4, and each cavity 12 contains one and only one traction tube 4 that can move along the length of the barrel 1, thereby effectively avoiding mutual interference of the traction tubes 4.

[0032] In this embodiment, the gun body 2 and the gun barrel 1 are detachably connected. Since the gun body 2 is held by the doctor and located outside the patient's body, while the distal end of the gun barrel 1 needs to pass through the laparoscope into the patient's body, the gun barrel 1 and gun body 2 require different levels of sterilization. By making the gun body 2 and gun barrel 1 detachably connected, different levels of sterilization treatment can be performed on the gun body 2 and gun barrel 1 separately. Furthermore, the gun barrel 1 can even be discarded as a single-use item to avoid cross-infection.

[0033] In this embodiment, the negative pressure mechanism 3 includes a three-way pipe 31. The first end of the three-way pipe 31 is connected to an external negative pressure generator, the second end is connected to each traction pipe 4, and the third end is equipped with a safety valve 32 for adjusting the negative pressure attraction and emergency pressure release. Since the three-way pipe 31 is connected to the external negative pressure generator, a negative pressure will be formed inside the three-way pipe 31 under the action of the external negative pressure generator. Furthermore, because its second end is connected to each traction pipe 4, the distal end of the traction pipe 4 can exert an adsorption effect on the kidneys. However, when the negative pressure is too high, the excessive attraction of the traction pipe 4 to the kidneys will cause kidney damage. At this time, emergency pressure relief is required to protect the kidneys. By setting a safety valve 32 at the third end of the three-way pipe 31, when the negative pressure inside the three-way pipe 31 is too high, the safety valve 32 can automatically open and connect to the outside atmosphere. At this time, the outside atmosphere enters the three-way pipe 31 through the safety valve 32, thereby achieving the pressure relief function. Specifically, the safety valve 32 includes a sleeve 321 formed at the end of the three-way pipe 31 and extending out of the gun body 2. Both ends of the sleeve 321 are connected via a bypass pipe 322, and its end is threaded with a valve cover 323 with air holes. The valve cover 323 is pulled by a spring 324 to a slider 325 embedded in the sleeve 321. The diameter of the slider 325 is the same as the inner diameter of the sleeve 321, allowing it to slide back and forth within the sleeve 321. The bottom of the sleeve 321 is recessed, and the lower opening of the bypass pipe 322 is located below the recessed portion of the sleeve 321, thus preventing the slider 325 from causing blockage. When the negative pressure inside the three-way pipe 31 is normal, the slider 325 remains balanced under the upward pull of the spring 324 and the downward attraction of the negative pressure. At this time, the slider 325 blocks the upper opening of the bypass pipe 322, preventing external gas from entering the three-way pipe 31 through the bypass pipe 322 (e.g., Figure 4 As shown in the diagram, when the negative pressure inside the three-way pipe 31 gradually increases, the downward attractive force on the slider 325 gradually increases, causing the slider 325 to move downward. When the upper opening of the bypass pipe 322 exceeds the top surface of the slider 325, the bypass pipe 322 is connected. At this time, external air enters the sleeve 321 through the vent on the valve cover 323, then flows into the upper opening of the bypass pipe 322 and out through its lower opening, thus entering the three-way pipe 31, producing a pressure relief effect (as shown in the diagram). Figure 5 (As shown). Furthermore, the valve cover 323 is threaded to the sleeve 321. By screwing the valve cover 323, the initial height of the slider 325 can be changed, thereby altering the negative pressure within the tee pipe 31 when pressure relief occurs. Specifically, an air bladder 33 is formed at the second end of the tee pipe 31, and each traction pipe 4 is fixedly connected to the air bladder 33.

[0034] In this embodiment, the distal end of the traction tube 4 is connected to a suction cup 41 for adsorbing the kidney. The suction cup 41 includes several radially arranged elastic retractable skeleton rods 411, and adjacent skeleton rods 411 are connected by a flexible web membrane 412. The suction cup 41 is connected to the traction tube 4, and the direct contact with the kidney by the suction cup 41 can increase the contact area, thereby reducing the pressure and avoiding damage to the kidney. Since the suction cup 41 is installed at the end of the traction tube 4 and moves in and out of the barrel 1 along with the traction tube 4, the suction cup 41 is designed as a retractable elastic structure so that it can freely enter and exit the barrel 1. Specifically, the suction cup has several skeleton rods 411, all of which are elastic rods and arranged radially. When the suction cup 41 needs to enter the barrel 1, the skeleton rods 411 converge inward under the compression of the barrel wall, thereby reducing their volume. When the suction cup 41 extends out of the barrel 1, since the skeleton rods 411 are elastic rods, they can automatically restore their radial shape, thereby opening the flexible web membranes 412 connecting adjacent skeleton rods 411 to form a trumpet shape. Furthermore, the distal end of the traction tube 4 is bent, and when it extends out of the barrel 1, it diffuses radially in opposite directions. Even further, the traction tube 4 consists of an inner tube and an outer tube. The inner tube is a flexible air tube used to provide a gas passage; the outer tube is an elastic sheath used to provide bending force.

[0035] Preferably, the number of traction tubes 4-suction cups 41 in this device can be set to 3 sets, but is not limited to 3 sets.

[0036] In this embodiment, the control mechanism 5 includes several triggers 51 hinged to the gun body 2. Each trigger 51 pulls a corresponding traction tube 4 via a cord 52. Each traction tube 4 is fitted with a separate elastic tube 53, and the cord 52 connected to the trigger 51 is connected to the separate elastic tube 53. By setting the triggers 51 and connecting each trigger 51 to a traction tube 4 via the cord 52, pulling the trigger 51 can pull the corresponding traction tube 4, causing it to bend within the gun body 2. Since the proximal end of the traction tube 4 is fixedly connected to the airbag 33 and cannot move, when it bends, the distal end used to attract the kidney will retract towards the gun barrel 1, thereby pulling the kidney to move. Through the cooperation of each trigger 51, the doctor can control different traction tubes 4 to retract to different degrees, thereby pulling the kidney to rotate. Furthermore, in order to enable the traction tube 4 to automatically reset after the trigger 51 is released, a separate elastic tube 53 is also fitted on each traction tube 4. The original state of the elastic tube 53 is a straight tube, which can bend under the pull of the rope 52. After the tension of the rope 52 is removed, the elastic tube 53 can automatically spring back and drive the traction tube 4 to reset.

[0037] Preferably, the shape of the gun body 2 and the position of the trigger 51 are ergonomic to obtain a better grip and comfortable trigger control.

[0038] In this embodiment, the control mechanism 5 includes a lever 54 hinged to the gun body 2. The lever 54 pulls each traction tube 4 simultaneously via a rope 52. A common elastic tube 55 is fitted onto each traction tube 4, and the rope 52 connected to the lever 54 is connected to the common elastic tube 55. By setting the lever 54 and connecting it to all traction tubes 4 via the rope 52, when the lever 54 is turned, the rope 52 pulls all traction tubes 4, causing them to bend simultaneously, thus causing all traction tubes 4 to retract towards the gun barrel 1 to attract the distal end of the kidney. By setting the lever 54, the maximum distance the distal end of each traction tube 4 extends beyond the gun barrel 1 can be controlled, achieving a master control function. Furthermore, the lever 54 can work in conjunction with the trigger 51 to achieve multiple adjustments to the traction tubes 4. Furthermore, in order to enable the traction tube 4 to automatically reset after the lever 54 is released, a common elastic tube 55 is also sleeved on all the traction tubes 4. The common elastic tube 55 is originally in the form of a straight tube, and can be bent under the pull of the rope 52. After the tension of the rope 52 is removed, the common elastic tube 55 can automatically spring back and drive the traction tube 4 to reset.

[0039] The traction tube 4 can pass through the barrel 1, which is fixed to the shell-shaped gun body 2. The traction tube 4 can slide and extend within the barrel 1. The distal end of the traction tube 4 can be pushed forward by the restoring force of the elastic tube, and can also be retracted backward by the pulling force of the rope. Moreover, the traction tube 4 is designed as a flexible semi-rigid tube with its distal end bent outward from the barrel 1. When it extends out of the barrel 1, its extension range is related to the extension length. Thus, the extension and retraction of the traction tube 4 can be controlled by telescoping, so as to achieve multi-directional traction on the kidney. In addition, the kidney can be rotated by changing the extension and retraction state of different parts.

[0040] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A laparoscopic kidney grasper, characterized in that: It includes a gun barrel (1) for passing through a laparoscope into the human body and a shell-shaped gun body (2) connected thereto; the gun barrel (1) is provided with several proximal negative pressure mechanisms (3) and distal traction tubes (4) for adsorbing the kidneys; the gun body (2) is provided with a control mechanism (5) for adjusting the degree of extension and retraction of the traction tubes (4). The negative pressure mechanism (3) includes a three-way pipe (31), the first end of which is connected to an external negative pressure generator, the second end of which is connected to each traction pipe (4), and the third end of which is provided with a safety valve (32) for adjusting the negative pressure attraction and emergency release pressure. The safety valve (32) includes a sleeve (321) formed at the end of the three-way pipe (31) and extending out of the gun body (2). The two ends of the sleeve (321) are connected by a bypass pipe (322), and the end of the sleeve is threaded with a valve cover (323) with air holes. The valve cover (323) is pulled by a spring (324) to a slider (325) built into the sleeve (321). The distal end of the traction tube (4) is connected to a suction cup (41) for adsorbing the kidney; the suction cup (41) includes a plurality of radially arranged elastic retractable skeleton rods (411), and each adjacent skeleton rod (411) is connected by a flexible web membrane (412). The control mechanism (5) includes several triggers (51) hinged to the gun body (2). Each trigger (51) pulls a traction tube (4) via a rope (52). Each traction tube (4) is fitted with a split elastic tube (53). The rope (52) connected to the trigger (51) is connected to the split elastic tube (53). By setting the trigger (51), each trigger (51) is connected to a traction tube (4) by the rope (52), so that when the trigger (51) is pulled, the corresponding traction tube (4) can be pulled and bend within the gun body (2) to attract the distal end of the kidney to retract toward the gun barrel (1). After the tension of the rope (52) disappears, the split elastic tube (53) can automatically rebound and drive the traction tube (4) to reset. The control mechanism (5) includes a lever (54) hinged to the gun body (2), which pulls each traction tube (4) simultaneously via a rope (52); a total elastic tube (55) is sleeved on each of the traction tubes (4), and the rope (52) connected to the lever (54) is connected to the total elastic tube (55); by setting the lever (54), the lever (54) is connected to all the traction tubes (4) by the rope (52), when the lever (54) is turned, the rope (52) pulls all the traction tubes (4) to bend simultaneously, so that all the traction tubes (4) are used to attract the distal end of the kidney to retract toward the gun barrel (1); after the tension of the rope (52) disappears, the total elastic tube (55) can automatically rebound and drive the traction tubes (4) to reset.

2. The laparoscopic kidney grasper according to claim 1, characterized in that: The barrel (1) is divided into several cavities (12) along its length by the valve wall (11), and each cavity (12) is provided with a traction tube (4).

3. The laparoscopic kidney grasper according to claim 1, characterized in that: The gun body (2) is detachably connected to the gun barrel (1).

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