A stone removal device for clinical hepatobiliary surgery

Abstract

This invention discloses a novel stone retrieval device for clinical use in hepatobiliary surgery, comprising an operating tube with a cavity inside. A connecting tube is sealed and installed through the bottom of the cavity, and multiple lighting lamps are installed at the bottom of the connecting tube. Two clamping plates are symmetrically connected to the bottom of the operating tube via two connecting mechanisms. Threading rings are fixedly connected to opposite sidewalls of the two clamping plates. The connecting tube extends between the two clamping plates. A clamping drive mechanism is provided at the upper end of the operating tube. This invention has a reasonable structural design, which not only illuminates the wound for easy stone retrieval but also draws the stone into the cavity, preventing unstable clamping and subsequent re-falling into the wound. It also facilitates the re-retrieval of residual stones within the wound, ensuring stone retrieval stability and efficiency. Furthermore, it allows for easy cleaning of the cavity after stone retrieval, facilitating subsequent stone retrieval procedures.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a stone removal device for clinical use in hepatobiliary surgery. Background Technology

[0002] Hepatobiliary surgery primarily studies hepatocellular carcinoma, hepatobiliary stones, post-hepatitis cirrhosis, and acute liver failure caused by severe hepatitis—all serious diseases threatening the health of the Chinese population. Hepatobiliary stones are a relatively common condition in hepatobiliary surgery, and stone removal devices are typically used during the surgical procedure to remove the stones.

[0003] Currently, existing stone retrieval devices are not convenient for holding stones during use, and stones are prone to falling back into the wound during the retrieval process, affecting the progress and efficiency of stone retrieval. Furthermore, the stones must be completely removed and placed in a surgical tray before any remaining stones can be held, which is inefficient. To address these issues, we have designed a stone retrieval device for clinical use in hepatobiliary surgery. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of existing stone retrieval devices, which are inconvenient to hold stones during use, easily causing stones to fall back into the wound during the retrieval process, affecting the progress and efficiency of stone retrieval. Furthermore, these devices require complete removal of the stone and placement in a surgical tray before any remaining stones can be held, resulting in low efficiency. The proposed invention provides a stone retrieval device for hepatobiliary surgery that not only illuminates the wound for easy stone retrieval but also draws the stone into the cavity, preventing unstable holding and subsequent fall back into the wound. It also facilitates the re-retrieval of any remaining stones within the wound, ensuring stability and efficiency in stone retrieval. Finally, it allows for easy cleaning of the cavity after stone retrieval, facilitating subsequent stone retrieval procedures.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A stone removal device for clinical use in hepatobiliary surgery includes an operating tube with a cavity inside. A connecting tube is sealed and installed through the bottom of the cavity. Multiple lights are installed at the bottom of the connecting tube. Two clamping plates are symmetrically connected to the bottom of the operating tube via two connecting mechanisms. Threading rings are fixedly connected to the opposite sidewalls of the two clamping plates. The connecting tube extends between the two clamping plates. A clamping drive mechanism is provided at the upper end of the operating tube. The two free ends of the clamping drive mechanism are fixedly connected to the two threading rings respectively. A sealing mechanism is provided above the connecting tube in the cavity. An air pump is installed on the sidewall of the operating tube. An air suction tube is installed at the suction end of the air pump, penetrating the sidewall of the operating tube and extending into the cavity. An opening and closing mechanism is provided between the air suction tube and the sealing mechanism. The free end of the opening and closing mechanism is fixedly connected to the sealing mechanism. A discharge mechanism is provided through the sidewall of the operating tube to facilitate cleaning of its interior.

[0007] Preferably, the connecting mechanism includes a first connecting plate fixedly connected to the bottom of the operating tube, a second connecting plate rotatably connected to the front side wall of the first connecting plate, a clamping plate fixedly connected to the bottom of the second connecting plate, and a plurality of first springs connected between the operating tube and the clamping plate.

[0008] Preferably, the opposite sidewalls of the two clamping plates abut each other, the two clamping plates together form a hemisphere, and the upper opposite sidewalls of the two clamping plates are provided with openings, through which the connecting pipe extends into the clamping plates.

[0009] Preferably, the clamping drive mechanism includes a mounting groove formed at the upper end of the operating tube, two vertical plates are slidably connected in the mounting groove, a T-shaped plate is fixedly connected to the upper end of the operating tube, the two vertical plates abut against the bottom of the T-shaped plate, a plurality of second springs are connected between the two vertical plates and the inner sidewalls at both ends of the mounting groove, and a first pull rope is fixedly connected to the opposite sidewalls of the two vertical plates, the free ends of the two first pull ropes are fixedly connected to two threading rings respectively.

[0010] Preferably, guide beads are rolledly connected to both ends of the operating tube, and the first pull rope is slidably connected to the guide beads.

[0011] Preferably, the sealing mechanism includes two first L-shaped plates fixedly connected to the rear sidewall of the cavity. The front sidewalls of the two first L-shaped plates are rotatably connected to sealing plates via rotating shafts. The opposite sidewalls of the two sealing plates abut against each other, and the opposite sidewalls of the two sealing plates abut against the inner sidewall of the cavity.

[0012] Preferably, the opening and closing mechanism includes an annular plate fixedly connected to the cavity and abutting against its inner wall. A mesh is installed inside the annular plate. A guide groove is provided on the inner wall of the cavity. A second L-shaped plate is slidably connected inside the guide groove. A plurality of third springs are connected between the second L-shaped plate and the inner top of the guide groove. A closing plate abutting against the upper end of the annular plate is fixedly connected to the bottom of the second L-shaped plate. Two second pull ropes are fixedly connected to the bottom of the closing plate. Both second pull ropes pass through the mesh and are fixedly connected to the upper ends of the two sealing plates respectively.

[0013] Preferably, the discharge mechanism includes a through-hole formed in the side wall of the operating pipe, a sealing plug is slidably connected in the through-hole, the sealing plug abuts against the annular plate, a sealing ring is sleeved on the side wall of the sealing plug and abuts against the inner side wall of the through-hole, and a pull plate is fixedly connected to the side wall of the sealing plug.

[0014] Compared with the prior art, the beneficial effects of this invention are as follows:

[0015] 1. By using a connecting pipe, lighting lamp, clamping plate, first connecting plate, second connecting plate, first spring, threading ring, first pull rope, mounting groove, vertical plate, second spring, guide bead, and T-shaped plate, the wound can be illuminated, making it easier to remove the stones.

[0016] 2. Through the arrangement of the first L-shaped plate, rotating shaft, sealing plate, annular plate, partition net, guide slide, second L-shaped plate, third spring, closing plate, second pull rope, suction pump, and suction pipe, the stone can be sucked into the cavity, preventing unstable clamping and causing it to fall back into the wound. It also facilitates the re-clamping of residual stones in the wound, ensuring the stability and efficiency of stone removal.

[0017] 3. The design of the connecting port, sealing plug, and pull plate facilitates the cleaning of the cavity after stone removal, making it easier to carry out the next stone removal operation.

[0018] In summary, the present invention has a reasonable structural design. It can not only illuminate the wound to facilitate the removal of stones, but also suck the stones into the cavity to prevent them from falling back into the wound due to unstable clamping. It can also facilitate the removal of residual stones in the wound, ensuring the stability and efficiency of stone removal. Furthermore, it can facilitate the cleaning of the cavity after stone removal, making it easier for the next stone removal operation. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the structure of a stone removal device for clinical use in hepatobiliary surgery proposed in this invention;

[0020] Figure 2 is an enlarged view of the structure at point A in Figure 1; Figure 3 is an enlarged view of the structure at point B in Figure 1; Figure 4 is an enlarged view of the structure at point C in Figure 1.

[0021] Figure 5 is a schematic diagram of the connection between the first L-shaped plate, the rotating shaft, and the sealing plate.

[0022] In the diagram: 1 Operating tube, 2 Cavity, 3 Connecting tube, 4 Lighting lamp, 5 Clamping plate, 6 First connecting plate, 7 Second connecting plate, 8 First spring, 9 Threading ring, 10 First pull rope, 11 Mounting groove, 12 Vertical plate, 13 Second spring, 14 Guide bead, 15 T-shaped plate, 16 First L-shaped plate, 17 Rotating shaft, 18 Sealing plate, 19 Annular plate, 20 Partition net, 21 Guide slide, 22 Second L-shaped plate, 23 Third spring, 24 Closing plate, 25 Second pull rope, 26 Suction pump, 27 Suction pipe, 28 Connecting port, 29 Sealing plug, 30 Pull plate. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] Referring to Figures 1-5, a stone removal device for clinical use in hepatobiliary surgery includes an operating tube 1. A cavity 2 is formed inside the operating tube 1. A connecting tube 3 is sealed and installed through the bottom of the cavity 2. Multiple lighting lamps 4 are installed at the bottom of the connecting tube 3. It is important to note that the lighting lamps 4 allow for observation of the surgical incision and the location of the stone, facilitating stone removal. Two clamping plates 5 are symmetrically connected to the bottom of the operating tube 1 via two connecting mechanisms. Each connecting mechanism includes a first connecting plate 6 fixedly connected to the bottom of the operating tube 1, a second connecting plate 7 rotatably connected to the front wall of the first connecting plate 6, and clamping plates 5 fixedly connected to the bottom of the second connecting plate 7. Multiple first springs 8 connect the operating tube 1 and the clamping plates 5. It is important to note that the arrangement of the first connecting plate 6 and the second connecting plate 7 allows the clamping plates 5 to rotate relative to the operating tube 1. The first springs 8 are tension springs, which, in their natural state, can pull the clamping plates 5 to rotate, causing the two clamping plates 5 to abut against each other. Made of transparent material, it allows light from the lamp 4 to pass through the clamping plate 5, making it easy to observe;

[0025] Two clamping plates 5 have wire loops 9 fixedly connected to their opposite sidewalls. A connecting tube 3 extends between the two clamping plates 5. The opposite sidewalls of the two clamping plates 5 abut against each other, forming a hemisphere. Openings are provided on the opposite sidewalls at the upper ends of the two clamping plates 5. The connecting tube 3 extends through the openings into the clamping plates 5. A clamping drive mechanism is provided at the upper end of the operating tube 1. The two free ends of the clamping drive mechanism are fixedly connected to the two wire loops 9. The clamping drive mechanism includes a mounting groove 11 at the upper end of the operating tube 1. Two vertical plates 12 are slidably connected in the mounting groove 11. A T-shaped plate 15 is fixedly connected to the upper end of the operating tube 1. The two vertical plates 12 abut against the bottom of the T-shaped plate 15. Multiple second springs 13 are connected between the two vertical plates 12 and the inner sidewalls at both ends of the mounting groove 11. It should be noted that the second springs 13 are tension springs, which can pull the two vertical plates 12 in their natural state. The two vertical plates 12 are far apart from each other, and the opposite sidewalls of each vertical plate 12 are fixedly connected to a first pull rope 10. The free ends of the two first pull ropes 10 are fixedly connected to two threading rings 9 respectively. The two sidewalls of the operating tube 1 are rolledly connected to guide beads 14. The first pull ropes 10 and guide beads 14 are slidably connected. It should be noted that the guide beads 14 can guide the first pull ropes 10 and reduce their wear. The T-shaped plate 15 can guide and limit the vertical plates 12, so that they can only slide horizontally within the mounting groove 11. Pulling the two vertical plates 12 makes them slide closer to each other within the mounting groove 11. Under the connection of the first pull ropes 10, the two clamping plates 5 can rotate and move away from each other, which is convenient for clamping the stones.

[0026] The cavity 2 is equipped with a sealing mechanism located above the connecting pipe 3. The sealing mechanism includes two first L-shaped plates 16 fixedly connected to the rear side wall of the cavity 2. The front side walls of the two first L-shaped plates 16 are rotatably connected to sealing plates 18 via rotating shafts 17. The opposite side walls of the two sealing plates 18 abut against each other, and the opposite side walls of the two sealing plates 18 abut against the inner side wall of the cavity 2. It should be noted that when the stone is sucked into the cavity 2, the sealing plates 18 can support the stone and prevent it from falling out of the cavity 2.

[0027] An air pump 26 is installed on the side wall of the operating tube 1. An air suction pipe 27 is installed at the suction end of the air pump 26. The air suction pipe 27 passes through the side wall of the operating tube 1 and extends into the cavity 2. It should be noted that the air pump 26 and the air suction pipe 27 work together to perform air suction, creating a negative pressure state in the cavity 2, which facilitates the suction of stones into the cavity 2. An opening and closing mechanism is provided between the air suction pipe 27 and the sealing mechanism. The free end of the opening and closing mechanism is fixedly connected to the sealing mechanism. The opening and closing mechanism includes an annular plate 19 fixedly connected in the cavity 2 and abutting against its inner side wall. A mesh 20 is installed in the annular plate 19. It should be noted that the mesh 20 is set to prevent stones from passing through the annular plate 19. A guide groove 21 is opened on the inner side wall of the cavity 2. A second L-shaped plate 22 is slidably connected in the guide groove 21. Multiple third springs 23 are connected to the inner top of the guide groove 21. It should be noted that the guide groove 21 can guide the second L-shaped plate 22, allowing it to slide up and down only in the vertical direction. The third springs 23 are elastic springs, which can push the second L-shaped plate 22 downward in its natural state, so that the closing plate 24 abuts against the upper end of the annular plate 19 to block it. The bottom of the second L-shaped plate 22 is fixedly connected to the closing plate 24, which abuts against the upper end of the annular plate 19. The bottom of the closing plate 24 is fixedly connected to two second pull ropes 25. Both second pull ropes 25 pass through the partition net 20 and are fixedly connected to the upper ends of the two sealing plates 18 respectively. It should be noted that when the closing plate 24 slides upward, under the connection of the two second pull ropes 25, it can pull the two sealing plates 18 to rotate, allowing the stone to enter the cavity 2.

[0028] The side wall of the operating tube 1 is provided with a discharge mechanism to facilitate cleaning of its interior. The discharge mechanism includes a connecting port 28 that is opened through the side wall of the operating tube 1. A sealing plug 29 is slidably connected in the connecting port 28. The sealing plug 29 abuts against the annular plate 19. The side wall of the sealing plug 29 is fitted with a sealing ring that abuts against the inner side wall of the connecting port 28. A pull plate 30 is fixedly connected to the side wall of the sealing plug 29. It should be noted that pulling the pull plate 30 can pull the sealing plug 29 out of the connecting port 28. The connecting port 28 not only facilitates the removal of stones in the cavity 2, but also facilitates the cleaning of the upper and lower sides of the annular plate 19.

[0029] The functional principle of this invention can be explained through the following operational methods:

[0030] In this invention, when it is necessary to remove stones, the clamping plate 5 is extended into the wound, and the lighting lamp 4 is turned on to observe the environment inside the wound and the location of the stones. When it is necessary to clamp the stones, the two vertical plates 12 are pushed to bring them closer together. Then, under the connection of the first pull rope 10, the two clamping plates 5 can rotate away from each other, opening their bottoms to facilitate clamping the stones. After clamping the stones, the two vertical plates 12 are released. Under the pulling force of the second spring 13, the two vertical plates 12 can be pulled away from each other. The first pull rope 10 is released, and under the pulling force of the first spring 8, the two clamping plates 5 can rotate back to their original position, so that the two clamping plates 5 close and abut against each other.

[0031] The suction pump 26 is activated, drawing air from the cavity 2 through the suction pipe 27, creating a negative pressure state within the cavity 2. This pressure causes the closing plate 24 to slide upwards, opening the annular plate 19. As the closing plate 24 slides upwards, the two sealing plates 18 rotate and open under the connection of the second pull rope 25. This allows the stones within the two clamping plates 5 to be drawn into the cavity 2 through the connecting pipe 3 and pulled above the sealing plates 18. Due to the obstruction of the mesh 20, the stones cannot pass through the annular plate 19. The suction pump 26 is then turned off. Under the elastic force of the third spring 23, the second L-shaped plate 22 and the closing plate 24 slide downwards, causing the closing plate 24 to seal the annular plate 19. As the closing plate 24 slides downwards, the second pull rope 25 is released, further discharging the stones from the two sealing plates 18. Under the influence of gravity, the two sealing plates 18 can rotate and reset and abut against each other, so that the stone is located between the sealing plate 18 and the ring plate 19, preventing it from falling back into the wound. It also makes it easier for the two clamping plates 5 to continue to clamp the remaining stone, which facilitates the stone removal work and improves the stone removal efficiency.

[0032] When it is necessary to clean the inside of cavity 2, pulling the pull plate 30 can pull the sealing plug 29 out of the connecting port 28, which makes it easier to remove the stone and to clean and disinfect the space above and below the annular plate 19, facilitating the next stone removal operation. After cleaning and disinfection, the sealing plug 29 is pushed back into the connecting port 28 and abuts against the annular plate 19. The sealing ring ensures the seal between the sealing plug 29 and the inner wall of the connecting port 28.

[0033] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A stone removal device for clinical use in hepatobiliary surgery, comprising an operating tube (1), characterized in that, The operating tube (1) has a cavity (2) inside. A connecting tube (3) is installed through the sealed bottom of the cavity (2). Multiple lighting lamps (4) are installed at the bottom of the connecting tube (3). Two clamping plates (5) are symmetrically connected to the bottom of the operating tube (1) through two connecting mechanisms. Threading rings (9) are fixedly connected to the opposite sidewalls of the two clamping plates (5). The connecting tube (3) extends between the two clamping plates (5). The upper end of the operating tube (1) is provided with a clamping drive mechanism. The two free ends of the clamping drive mechanism are respectively fixedly connected to two threading rings (9). The cavity (2) is provided with a sealing mechanism located above the connecting tube (3). The side wall of the operating tube (1) is equipped with a suction pump (26). The suction end of the suction pump (26) is equipped with a suction pipe (27). The suction pipe (27) passes through the side wall of the operating tube (1) and extends into the cavity (2). An opening and closing mechanism is provided between the suction pipe (27) and the sealing mechanism. The free end of the opening and closing mechanism is fixedly connected to the sealing mechanism. The side wall of the operating tube (1) is provided with a discharge mechanism to facilitate cleaning of its interior. The sealing mechanism includes two first L-shaped plates (16) fixedly connected to the rear side wall of the cavity (2). The front side walls of the two first L-shaped plates (16) are rotatably connected to sealing plates (18) through a rotating shaft (17). The two sealing plates (18) The opposing sidewalls abut against each other, and the opposite sidewalls of the two sealing plates (18) abut against the inner sidewall of the cavity (2). The opening and closing mechanism includes an annular plate (19) fixedly connected in the cavity (2) and abutting against its inner sidewall. A mesh (20) is installed in the annular plate (19). A guide groove (21) is opened in the inner sidewall of the cavity (2). A second L-shaped plate (22) is slidably connected in the guide groove (21). A plurality of third springs (23) are connected between the second L-shaped plate (22) and the inner top of the guide groove (21). A closing plate (24) abutting against the upper end of the annular plate (19) is fixedly connected to the bottom of the second L-shaped plate (22). Two second pull ropes (25) are fixedly connected to the bottom of the closing plate (24). The two second pull ropes (25) pass through the mesh (20) and are fixedly connected to the upper ends of the two sealing plates (18) respectively.

2. The stone removal device for clinical use in hepatobiliary surgery according to claim 1, characterized in that, The connecting mechanism includes a first connecting plate (6) fixedly connected to the bottom of the operating tube (1), a second connecting plate (7) rotatably connected to the front side wall of the first connecting plate (6), a clamping plate (5) fixedly connected to the bottom of the second connecting plate (7), and a plurality of first springs (8) connected between the operating tube (1) and the clamping plate (5).

3. The stone removal device for clinical use in hepatobiliary surgery according to claim 1, characterized in that, The two clamping plates (5) abut against each other on opposite sidewalls, and the two clamping plates (5) together form a hemisphere. The upper opposite sidewalls of the two clamping plates (5) are provided with openings, and the connecting pipe (3) extends through the openings into the clamping plates (5).

4. The stone removal device for clinical use in hepatobiliary surgery according to claim 1, characterized in that, The clamping drive mechanism includes a mounting groove (11) opened at the upper end of the operating tube (1). Two vertical plates (12) are slidably connected in the mounting groove (11). A T-shaped plate (15) is fixedly connected to the upper end of the operating tube (1). The two vertical plates (12) abut against the bottom of the T-shaped plate (15). Multiple second springs (13) are connected between the two vertical plates (12) and the inner sidewalls of the two ends of the mounting groove (11). First pull ropes (10) are fixedly connected to the opposite sidewalls of the two vertical plates (12). The free ends of the two first pull ropes (10) are fixedly connected to two threading rings (9).

5. A stone removal device for clinical use in hepatobiliary surgery according to claim 4, characterized in that, The two end sidewalls of the operating tube (1) are both rolled with guide beads (14), and the first pull rope (10) is slidably connected to the guide beads (14).

6. A stone removal device for clinical use in hepatobiliary surgery according to claim 1, characterized in that, The discharge mechanism includes a through-hole (28) that is opened on the side wall of the operating pipe (1). A sealing plug (29) is slidably connected inside the through-hole (28). The sealing plug (29) abuts against the annular plate (19). A sealing ring is sleeved on the side wall of the sealing plug (29) and abuts against the inner side wall of the through-hole (28). A pull plate (30) is fixedly connected to the side wall of the sealing plug (29).

Images