Endoscopic surgery puncture device

Abstract

The invention belongs to the technical field of medical surgical instruments, and discloses an endoscopic surgery puncture device which comprises a puncture outfit and a limiting assembly, the puncture outfit comprises a cannula and a puncture cone penetrating through the cannula, the limiting assembly comprises a sliding sleeve, the sliding sleeve is slidably connected to the outer wall of the cannula in a sleeving mode, and a limiting ring is connected to the lower portion of the sliding sleeve; the sliding sleeve is formed by combining a plurality of arc-shaped pieces, and the sliding sleeve is connected with a conical nut through threads; the conical nut is rotated, and the conical nut moves in the axial direction of the sleeve, so that the effective inner diameter of the sliding sleeve is decreased. Through mutual cooperation of the sliding sleeve, the limiting ring and the conical nut, the position of the limiting ring on the puncture outfit can be adjusted at will according to the pre-insertion depth, and the situation that the puncture cone advances due to inertia to puncture organs can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of medical surgical instruments, and in particular to a laparoscopic surgical puncture device. Background Art

[0002] With the continuous development of minimally invasive surgical techniques, laparoscopic surgery has been widely used in various medical fields, including abdominal surgery, gynecology, and urology, due to its significant advantages such as minimal trauma, rapid recovery, and few postoperative complications. In laparoscopic surgery, the puncture device is a key instrument for establishing a channel between the abdominal cavity and the outside world, and its performance directly affects the safety and efficiency of the operation.

[0003] Existing puncture devices primarily consist of a cannula and a puncture cone that penetrates the cannula, with a fixed thread on its outer wall. The device works by puncturing the abdominal wall with the puncture cone to create a small incision. The cannula is then inserted into the incision. Once the cannula is in place, the puncture cone is removed, leaving the integrally formed cannula in place and secured to the body via the threads on its outer wall. The cannula forms a passage for laparoscopic surgical instruments to enter and exit the abdominal cavity, providing the necessary operating path for surgical procedures.

[0004] However, some existing devices may cause the puncture cone to continue moving forward and injure organs due to inertia when the puncture cone enters the abdominal cavity due to a sudden decrease in resistance when piercing the abdominal wall, causing massive bleeding in the organs and triggering hemorrhagic shock in the patient. Summary of the Invention

[0005] The present invention aims to provide a laparoscopic puncture device that utilizes a sliding sleeve, a retaining ring, and a tapered nut to coordinate with each other. The retaining ring's position on the puncture device can be adjusted according to the pre-insertion depth, preventing the puncture cone from inertially advancing and injuring internal organs. This solves the problems encountered in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A laparoscopic surgical puncture device includes a puncture device and a limiting assembly. The puncture device includes a sleeve and a puncture cone passing through the sleeve. The limiting assembly includes a sliding sleeve, which is slidably connected to the outer wall of the sleeve and a limiting ring is connected below the sliding sleeve. The sliding sleeve is composed of a plurality of arc-shaped pieces and is connected to a conical nut via a thread. When the conical nut is rotated, the conical nut moves along the axial direction of the sliding sleeve, so that the effective inner diameter of the sliding sleeve becomes smaller.

[0008] Further, the clamping assembly is connected with a position adjusting assembly, the position adjusting assembly is adjustably connected with a limiting plate, the limiting plate is provided with a sliding groove, and the inner wall of the sliding groove is provided with a containing groove, and a plurality of ratchet teeth are arranged in the containing groove along the length direction; the outer wall of the sleeve is connected with a sliding block, the sliding block is arranged in cooperation with the sliding groove, and the sliding block is slidingly connected in the sliding groove; the inner part of the sliding block is provided with a wedge-shaped cavity, the wedge-shaped cavity is provided with a wedge-shaped block, the inclination angle of the slope of the wedge-shaped cavity is the same as the inclination angle of the slope of the wedge-shaped block, and the wedge-shaped cavity and the wedge-shaped block have gaps in the width and height directions; the wedge-shaped block is provided with an opening, the opening is connected with an elastic sheet, and the free end of the elastic sheet is connected with a hook matched with the ratchet teeth; when the wedge-shaped block slides to the opening along the wedge-shaped cavity, the elastic sheet is stretched out from the opening under the extrusion of the wedge-shaped block, and the hook is engaged with the ratchet teeth.

[0009] Further, the position adjusting assembly comprises a height adjusting assembly, a horizontal distance adjusting assembly and an angle adjusting assembly, one end of the height adjusting assembly is connected with the clamping assembly, the other end of the height adjusting assembly is connected with the horizontal distance adjusting assembly, the free end of the horizontal distance adjusting assembly is connected with the angle adjusting assembly, and the free end of the angle adjusting assembly is connected with the limiting plate.

[0010] Further, the telescopic component assembly comprises a threaded pipe, the two ends of the threaded pipe are respectively connected with threaded rods through threads, and the threads of the two threaded rods are opposite in rotation direction.

[0011] Further, the horizontal distance adjusting assembly comprises a telescopic pipe and a telescopic rod, the telescopic pipe is slidingly sleeved on the telescopic rod, and the telescopic pipe is provided with a limiting component for limiting the sliding of the telescopic pipe.

[0012] Further, the outer wall of the telescopic rod is provided with a key groove, the inner wall of the telescopic pipe is provided with a flat key, the flat key is arranged in cooperation with the key groove, and the flat key is slidingly connected in the key groove.

[0013] Further, the angle adjusting assembly comprises a sleeve, a spring and a connecting rod, the sleeve is connected with the horizontal distance adjusting assembly, the sleeve is provided with an internal spline at one end close to the horizontal distance adjusting assembly, one end of the connecting rod is slidingly connected in the sleeve, the other end of the connecting rod is connected with the limiting plate, and the end of the connecting rod close to the internal spline is connected with an external spline matched with the internal spline; and the end of the sleeve away from the horizontal distance adjusting assembly is a light wall section, the length of the light wall section is greater than the length of the internal spline; the spring is sleeved on the outer wall of the connecting rod, one end of the spring is connected with the end face of the external spline, and the other end of the spring is connected with the end of the sleeve away from the internal spline.

[0014] Furthermore, the outer edge of the sleeve is connected to a dial, and the connecting rod is connected to a pointer; and scale lines are provided on the sleeve.

[0015] Furthermore, the clamping assembly includes a U-shaped frame, the U-shaped frame is connected to a bolt via a thread, and the bolt is connected to a clamping plate; the clamping plate is provided with a plurality of anti-slip strips.

[0016] Furthermore, the slider is connected to a fixing plate, the fixing plate is parallel to the limiting plate, and the fixing plate is threadedly connected to a tightening screw.

[0017] The principle and beneficial effects of the technical solution are:

[0018] 1. The present invention provides a laparoscopic surgical puncture device, comprising a puncture device and a limiting assembly. The puncture device comprises a cannula and a puncture cone extending through the cannula, and is used to provide a passage for laparoscopic surgical instruments to enter and exit the abdominal cavity. The outer side of the cannula is provided with a fixing thread for increasing friction and fixing the cannula in a specific position. The limiting assembly comprises a sliding sleeve, which is slidably connected to the outer wall of the cannula, and a limiting ring is connected below the sliding sleeve. In addition, the sliding sleeve is composed of a plurality of arc-shaped pieces, and the sliding sleeve is threadedly connected to a conical nut. After the sliding sleeve and the limiting ring are adjusted to a specified position, the conical nut is rotated, and the conical nut moves along the axial direction of the sliding sleeve, so that the effective inner diameter of the sliding sleeve is reduced, thereby fixing the sliding sleeve to the cannula. In actual application, the position of the sliding sleeve and the limiting ring can be adjusted according to the pre-insertion depth. When the pre-insertion depth is reached, the limiting ring contacts the human abdomen, which can limit the puncture device from continuing to advance, and can prevent the puncture cone from continuing to advance under the action of inertia and puncturing organs, causing massive bleeding of the organs and inducing hemorrhagic shock in the patient.

[0019] 2. A laparoscopic surgical puncture device provided by the present invention also includes a clamping assembly, which is fixed to a bed board or other supporting member, and can fix the entire device; the clamping assembly is connected to a position adjustment assembly, and the free end of the position adjustment assembly is connected to a limiting plate, which is used to install a puncture device and guide puncture; the position adjustment assembly is used to adjust the position and angle of the limiting plate to adapt to different patient body shapes and abdominal conditions, and can perform puncture from different angles, thereby increasing the scope and flexibility of surgical operations and meeting different personalized needs; the limiting plate is provided with a slide groove, and the inner wall of the slide groove is provided with a receiving groove, and a plurality of ratchets are provided in the receiving groove along the length direction, and the outer wall of the sleeve is connected to a slider, and the slider is slidably connected to the slide groove. Due to the limiting effect of the receiving groove, when the slider slides normally in the slide groove, the ratchet and the slider will not interfere with each other, and the slider can slide unimpeded; a wedge-shaped cavity is provided inside the slider, and a wedge-shaped cavity is provided inside the wedge-shaped cavity The wedge block has an inclination angle of the inclined surface of the wedge cavity that is the same as that of the wedge block. There is a gap between the wedge cavity and the wedge block in both width and height directions, so that the wedge block can slide up and down along the inclined surface in the wedge cavity, and in the process of the wedge block sliding upward, the distance between the right end face of the wedge block and the right end face of the wedge cavity gradually decreases; the wedge block is provided with an opening, and an elastic sheet is connected to the opening. The free end of the elastic sheet is connected to a hook that cooperates with the ratchet. Under normal conditions, the elastic sheet is inclined toward the wedge cavity. When the puncture cone enters the abdominal cavity, the speed and acceleration of the puncture cone suddenly increase when the resistance to puncturing the abdominal wall suddenly decreases. Under the action of inertia, the slider slides backward (upward) along the inclined surface of the wedge cavity in the wedge cavity. The wedge block squeezes the elastic sheet, and the elastic sheet extends from the opening, so that the hook is engaged with the ratchet, limiting the puncture device from continuing to puncture forward, thereby avoiding the puncture cone from inertia puncturing the organs, causing massive bleeding, and inducing hemorrhagic shock. In addition, the setting of the slide groove and the slider can also guide the puncture direction to avoid puncture failure due to hand shaking or other reasons during the puncture process.

[0020] 3. The present invention provides a laparoscopic surgical puncture device, wherein the position adjustment assembly includes a height adjustment assembly, a horizontal distance adjustment assembly, and an angle adjustment assembly. The height adjustment assembly is used to adjust the height of the limit plate and the clamping assembly, thereby adjusting the distance between the puncture device and the patient's puncture site; the horizontal distance adjustment assembly is used to adjust the horizontal distance between the limit plate and the clamping assembly, thereby adjusting the puncture position of the puncture device in the horizontal direction; and the angle adjustment assembly is used to adjust the angle of the limit plate relative to the horizontal plane, thereby adjusting the angle between the puncture device and the patient's puncture site. The device of the present invention is fully functional and can perform punctures from different angles and heights to accommodate different patients, thereby increasing the range and flexibility of surgical operations and meeting different individual needs.

[0021] 4. The present invention provides a laparoscopic surgical puncture device, specifically, a telescopic member assembly includes a threaded tube, both ends of the threaded tube are respectively connected to threaded rods by threads, and the threads of the two threaded rods are in opposite directions. By rotating the threaded tube, the height of the limit plate and the clamping assembly can be adjusted, and the angle of the limit plate can be adjusted within a range of 360° with the vertical line as the axis, further increasing the flexibility of angle adjustment to meet the needs of different patients; the horizontal distance adjustment assembly includes a telescopic tube and a telescopic rod, the telescopic tube is slidably sleeved on the telescopic rod, the telescopic tube is provided with a limiting member for limiting the sliding of the telescopic tube, and the telescopic tube is slid to a specified distance, and then the telescopic tube is fixed with the limiting member, so that the limit plate can be fixed at the specified position, which is easy to operate; in addition, a key slot is provided on the outer wall of the telescopic rod, and a flat key is provided on the inner wall of the telescopic tube. The flat key and the key slot are matched and arranged, and the flat key is slidably connected to the key slot. By setting the flat key and the key slot, it can play a guiding and limiting role.

[0022] 5. A laparoscopic surgical puncture device provided by the present invention, specifically, an angle adjustment assembly includes a sleeve, a spring and a connecting rod, an inner spline is provided at one end of the sleeve close to the horizontal distance adjustment assembly, the connecting rod is slidably connected to the sleeve, and the end of the connecting rod close to the inner spline is connected to an outer spline that cooperates with the inner spline, and the end of the sleeve away from the horizontal distance adjustment assembly is a light wall section, the length of the light wall section is greater than the length of the inner spline, the spring is sleeved on the outer wall of the connecting rod, one end of the spring is connected to the end face of the outer spline, and the other end of the spring is connected to the end of the sleeve away from the inner spline; when the angle of the limit plate needs to be adjusted, the connecting rod is pulled, the inner spline slides toward the light wall section, and the spring is compressed until the outer spline is completely located in the light wall section. When the external spline disengages the internal spline, the connecting rod is rotated to adjust the angle of the limit plate. After the adjustment is completed, the connecting rod is released. The connecting rod slides toward the direction close to the internal spline under the action of the spring's rebound force, causing the internal and external splines to mesh, fixing the connecting rod and limiting its further rotation, facilitating subsequent puncture operations and increasing the stability of the puncture. In addition, at this time, the spring is still in a compressed state, and the spring's rebound force increases the fixing force on the connecting rod, further improving the stability of the puncture. Therefore, the setting of the angle adjustment assembly can adjust the angle of the limit plate within a 360° range with the horizontal line as the axis, further increasing the flexibility of the puncture angle; in addition, it can also fix the limit plate, increasing the stability of the puncture. In addition, a dial is connected to the outer edge of the sleeve, and a pointer is connected to the connecting rod to facilitate precise adjustment of the rotation angle. Scale lines are provided on the sleeve to facilitate the operator to know the insertion depth and control the force and insertion speed based on the pre-insertion depth and the inserted depth.

[0023] 6. The present invention provides a laparoscopic surgical puncture device, in which a slider is connected to a fixed plate, the fixed plate is parallel to the limit plate, and the fixed plate is threadedly connected to a locking screw. When the puncture of the puncture device is completed, the locking screw is passed through the fixed plate and abuts against the limit plate, which can further fix the sleeve in a specified position on the basis of the sleeve thread fixation, thereby avoiding displacement of the sleeve during subsequent operations; the clamping assembly includes a U-shaped frame, the U-shaped frame is threadedly connected to a bolt, and the bolt is connected to a splint, which can be suitable for bed boards or support boards of different thicknesses; the splint is provided with a number of anti-slip strips, which can increase the clamping stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a laparoscopic surgical puncture device in Example 1 of the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at E in the middle;

[0026] Figure 3 This is a schematic structural diagram of a laparoscopic surgical puncture device in Example 2 of the present invention;

[0027] Figure 4 This is a top view of the laparoscopic surgical puncture device in Example 2 of the present invention;

[0028] Figure 5 for Figure 4 Partial cross-sectional view of AA;

[0029] Figure 6 This is a front view of the laparoscopic surgical puncture device in Example 2 of the present invention;

[0030] Figure 7 for Figure 6 Partial cross-sectional view of the middle BB;

[0031] Figure 8 for Figure 6 Partial cross-sectional view of CC;

[0032] Figure 9 This is a front view of the puncture device and the limiting plate of the laparoscopic surgical puncture device in Example 2 of the present invention;

[0033] Figure 10 for Figure 9 Cross-sectional view of DD.

[0034] The names of the corresponding symbols in the accompanying drawings are:

[0035] 1. U-shaped frame; 2. Bolt; 3. Clamp; 4. Anti-slip strip; 5. Threaded rod; 6. Threaded tube; 7. Telescopic rod; 8. Keyway; 9. Telescopic tube; 10. Flat key; 11. Limiting piece; 12. Sleeve; 13. Internal spline; 14. Connecting rod; 15. External spline; 16. Spring; 17. Scale plate; 18. Pointer; 19. Limit plate; 20. Slide groove; 21. Receiving groove; 22. Ratchet; 23. Piercing cone; 24. Sleeve; 25. Scale line; 26. Slider; 27. Wedge-shaped cavity; 28. Opening; 29. ​​Elastic sheet; 30. Hook; 31. Wedge block; 32. Fixing plate; 33. Tightening screw; 34. Plain wall section; 35. Limiting ring; 36. Conical nut; 37. Sleeve; 371. Arc sheet. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0037] Example 1: Figure 1 and 2 As shown, a laparoscopic surgical puncture device includes a puncture device and a limiting assembly. The puncture device includes a sleeve 24 and a puncture cone 23 passing through the sleeve. The limiting assembly includes a sleeve 37, which is slidably sleeved on the outer wall of the sleeve 24, and a limiting ring 35 is connected below the sleeve 37; the sleeve 37 is composed of six arc-shaped pieces 371, that is, the six arc-shaped pieces 371 are connected to form a hollow cylindrical sleeve 37, and the sleeve 37 can be gathered or separated under the action of external force to make the diameter of the sleeve 37 smaller or larger; in addition, the sleeve 37 is threadedly connected to a tapered nut 36. When the tapered nut 36 is rotated, the tapered nut 36 moves along the axial direction of the sleeve 37, so that the effective inner diameter of the sleeve 37 becomes smaller, thereby fixing the sleeve 37 to the sleeve 24.

[0038] The specific implementation process is as follows:

[0039] The positions of the sliding sleeve 37 and the limiting ring 35 are adjusted according to the pre-insertion depth checked in the early stage. When adjusted to the specified position, the conical nut 36 is rotated to reduce the effective inner diameter of the sliding sleeve 37, thereby fixing the sliding sleeve 37 and the limiting ring 35 in the specified position. During the puncture process, when the puncture device reaches the pre-insertion depth, the limiting ring 35 contacts the human abdomen, which can limit the puncture device from moving forward. This can prevent the puncture cone 23 from moving forward under the action of inertia and puncturing organs, causing massive bleeding in the organs and triggering hemorrhagic shock in the patient.

[0040] Example 2: Figures 3 to 10 As shown, the difference between this embodiment and embodiment 1 is that this embodiment further includes a clamping assembly on the basis of embodiment 1, and the clamping assembly includes a U-shaped frame 1, the U-shaped frame 1 is connected to a bolt 2 through a thread, and one end of the bolt 2 located in the U-shaped frame 1 is connected to a clamping plate 3, and the clamping plate 3 is provided with a plurality of anti-slip strips 4.

[0041] The U-shaped frame 1 is connected to a position adjustment component, the free end of the position adjustment component is connected to the limiting plate 19, and the position adjustment component is used to adjust the position and angle of the limiting plate 19; in this embodiment, the position adjustment component includes a height adjustment component, a horizontal distance adjustment component and an angle adjustment component, one end of the height adjustment component is connected to the clamping component, the other end of the height adjustment component is connected to the horizontal distance adjustment component, the free end of the horizontal distance adjustment component is connected to the angle adjustment component, and the free end of the angle adjustment component is connected to the limiting plate 19. Specifically, the telescopic member assembly includes a threaded tube 6, both ends of the threaded tube 6 are respectively connected to a threaded rod 5 by a thread, and the threads of the two threaded rods 5 are in opposite directions, and the free end of one threaded rod 5 is fastened to the U-shaped frame 1; the horizontal distance adjustment assembly includes a telescopic tube 9 and a telescopic rod 7, the telescopic tube 9 is slidably sleeved on the telescopic rod 7, the free end of the telescopic rod 7 is connected to the other threaded rod 5, the telescopic tube 9 is provided with a restriction member 11 for limiting the sliding of the telescopic tube 9, and the restriction member 11 can be a tightening bolt; in addition, the outer wall of the telescopic rod 7 is provided with a key groove 8, and the inner wall of the telescopic tube 9 is provided with a flat key 10, the flat key 10 is matched with the key groove 8, and the flat key 10 is slidably connected to the key groove 8; the angle adjustment assembly includes a sleeve 12, an elastic The spring 16 and connecting rod 14 are connected to the end of the telescopic tube 9 away from the telescopic rod 7. The end of the sleeve 12 near the telescopic tube 9 is provided with an internal spline 13. One end of the connecting rod 14 is slidably connected to the sleeve 12, and the other end of the connecting rod 14 is connected to the limit plate 19. The end of the connecting rod 14 near the internal spline 13 is connected to the external spline 15 that mates with the internal spline 13. The end of the sleeve 12 away from the telescopic tube 9 is a plain wall section 34, which is longer than the internal spline 13. The spring 16 is sleeved on the connecting rod 14, one end of the spring 16 is connected to the end face of the external spline 15 away from the telescopic tube 9, and the other end of the spring 16 is connected to the end of the sleeve 12 away from the internal spline 13. In addition, a dial 17 is connected to the outer edge of the sleeve 12, and a pointer 18 is connected to the connecting rod 14.

[0042] The limiting plate 19 is provided with a "convex" shaped slide 20, and the inner wall of the slide 20 is provided with a receiving groove 21, and a plurality of ratchet teeth 22 are provided in the receiving groove 21 along the length direction; the puncture device includes a sleeve 24 and a puncture cone 23 passing through the sleeve 24, and the sleeve 24 is provided with a scale line 25 and a fixed thread; the outer wall of the sleeve 24 is connected to a "convex" shaped slider 26, the slider 26 is provided with the slide 20, and the slider 26 is slidably connected to the slide 20; a wedge-shaped cavity 27 is provided inside the slider 26, and a wedge block 31 is provided in the wedge-shaped cavity 27, and the inclination angle of the inclined surface of the wedge block 31 is the same as that of the inclined surface of the wedge block 31. The wedge-shaped cavity 27 and the wedge block 31 have the same oblique angle, with clearances in both the width (horizontal) and height (vertical) directions, allowing the wedge block 31 to slide within the wedge-shaped cavity 27, that is, along the inclined surface of the wedge-shaped cavity 27. The wedge block 31 has an opening 28, connected to an elastic sheet 29, the free end of which is connected to a hook 30 that engages with the ratchet 22. When the wedge block 31 slides within the wedge-shaped cavity 27 to the opening 28, the elastic sheet 29 extends from the opening 28 under the pressure of the wedge block 31, causing the hook 30 to engage with the ratchet 22. In addition, to further secure the sleeve 24, the slider 26 is connected to a fixing plate 32, which is parallel to the limit plate 19 and is threaded with a tightening screw 33.

[0043] The specific implementation process is as follows:

[0044] When using this device, the sliding sleeve and the limiting ring can be removed, and the depth and angle of the puncture can be known according to the patient's body shape and abdominal condition, as well as the preoperative examination data; the clamping assembly is fixed to the bed board or the support board, and it is fixed with the bolt 2; the threaded tube 6 is rotated to adjust the height and angle of the limiting plate 19 on the horizontal plane; the telescopic tube 9 is slided to the specified distance along the length direction of the keyway 8, and it is fixed with the limiting member 11; the connecting rod 14 is pulled, the inner spline 13 slides toward the light wall section 34, and the spring 16 is compressed until the outer spline 15 is completely located in the light wall section 34, at which time the outer spline 15 is disengaged from the inner spline 13, and the connecting rod 14 is rotated to adjust the angle of the limiting plate 19. After the adjustment is completed, the connecting rod 14 is released, and the connecting rod Under the action of the rebound force of the spring 16, 14 slides toward the direction close to the inner spline 13, so that the inner spline 13 and the outer spline 15 are engaged, fixing the connecting rod 14 and restricting the connecting rod 14 from continuing to rotate; puncture is performed along the length direction of the slide groove 20. When the puncture cone 23 enters the abdominal cavity, the speed and acceleration of the puncture cone 23 suddenly increase when the resistance to puncturing the abdominal wall suddenly decreases. Under the action of inertia, the slider 26 slides backward (upward) along the inclined surface of the wedge-shaped cavity 27 in the wedge-shaped cavity 27. The wedge block 31 squeezes the elastic sheet 29, and the elastic sheet 29 extends from the opening 28, so that the hook 30 is engaged with the ratchet 22, limiting the puncture device from continuing to puncture forward, thereby avoiding the puncture cone 23 from inertia puncturing the organs, causing massive bleeding, and inducing hemorrhagic shock.

[0045] Among them, the clamping assembly is fixed to the bed board or other support members, which can fix the entire device; the puncture device includes a sleeve 24 and a puncture cone 23 passing through the sleeve 24, providing a channel for laparoscopic surgical instruments to enter and exit the abdominal cavity, and a fixed thread is provided on the outside of the sleeve 24 to increase friction and fix the sleeve 24 at a specific position; the position adjustment assembly is used to adjust the position and angle of the limit plate 19 to adapt to different patient body shapes and abdominal conditions, and can perform puncture from different angles, thereby increasing the scope and flexibility of surgical operations and meeting different personalized needs; the slider 26 is slidably connected to the slide groove 20. Due to the limiting effect of the accommodating groove 21, when the slider 26 slides normally in the slide groove 20, the ratchet 22 and the slider 26 will not interfere with each other, and the slider 26 can slide unimpeded; the inclination angle of the inclined surface of the wedge-shaped cavity 27 is the same as the inclination angle of the inclined surface of the wedge block 31, and the wedge cavity 27 and the wedge block The wedge block 31 has gaps in both width and height directions so that the wedge block 31 can slide up and down along the inclined surface in the wedge-shaped cavity 27, and during the upward sliding process of the wedge block 31, the distance between the right end surface of the wedge block 31 and the right end surface of the wedge-shaped cavity 27 gradually decreases; the wedge block 31 is provided with an opening 28, and an elastic sheet 29 is connected to the opening 28, and the free end of the elastic sheet 29 is connected to a hook 30 that cooperates with the ratchet 22. In a normal state, the elastic sheet 29 is inclined toward the wedge-shaped cavity 27. When the puncture cone 23 enters the abdominal cavity, the speed and acceleration of the puncture cone 23 suddenly increase when the resistance to puncturing the abdominal wall suddenly decreases. The slider 26 slides backward (upward) along the inclined surface of the wedge cavity 27 in the wedge-shaped cavity 27 under the action of inertia, so that the hook 30 engages with the ratchet 22, limiting the puncture device from continuing to puncture forward, thereby preventing the puncture cone 23 from inertia and piercing the organs, causing massive bleeding and inducing hemorrhagic shock. In addition, the arrangement of the slide groove 20 and the slider 26 can also guide the puncture direction, thereby avoiding puncture failure due to hand shaking or other reasons during the puncture process.

[0046] The telescopic member assembly includes a threaded tube 6 and two threaded rods 5, and the threads of the two threaded rods 5 have opposite rotation directions. By rotating the threaded tube 6, the height of the limit plate 19 and the clamping assembly can be adjusted, and the angle of the limit plate 19 can be adjusted within a range of 360° with the vertical line as the axis, further increasing the flexibility of angle adjustment to meet the needs of different patients; the horizontal distance adjustment assembly includes a telescopic tube 9 and a telescopic rod 7, which is easy to operate; in addition, the setting of the flat key 10 and the keyway 8 can play a guiding and limiting role.

[0047] The angle adjustment assembly, comprising a sleeve 12, internal splines 13, spring 16, connecting rod 14, and external splines 15, allows for 360-degree adjustment of the angle of the stop plate 19 about the horizontal axis, further increasing the flexibility of the puncture angle. Furthermore, the stop plate 19 can be fixed to enhance puncture stability. A dial 17 is attached to the outer edge of the sleeve 12, and a pointer 18 is attached to the connecting rod 14, allowing for precise adjustment of the rotation angle. A scale 25 is provided on the sleeve 24 to facilitate the operator's understanding of the insertion depth, allowing them to control the force and speed of insertion based on the pre-insertion depth and the actual insertion depth.

[0048] The slider 26 is connected to a fixing plate 32, which is parallel to the limiting plate 19, and the fixing plate 32 is threadedly connected to a tightening screw 33. When the puncture device is completed, the tightening screw 33 is passed through the fixing plate 32 and abuts against the limiting plate 19, which can further fix the sleeve 24 in a specified position on the basis of the threaded fixation of the sleeve 24, thereby preventing the sleeve 24 from shifting during subsequent operations; the clamping assembly includes a U-shaped frame 1, the U-shaped frame 1 is threadedly connected to a bolt 2, and the bolt 2 is connected to a splint 3, which can be suitable for bed boards or support boards of different thicknesses; the splint 3 is provided with a plurality of anti-slip strips 4, which can increase the clamping stability.

[0049] The above is only an embodiment of the present invention, and common knowledge such as the specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A laparoscopic surgical puncture device, characterized in that: It includes a puncture device and a limiting component. The puncture device includes a sleeve and a puncture cone passing through the sleeve. The limiting component includes a sliding sleeve. The sliding sleeve is slidably connected to the outer wall of the sleeve. A limiting ring is connected below the sliding sleeve. The sliding sleeve is composed of a plurality of arc-shaped pieces, and the sliding sleeve is connected to a conical nut through a thread. When the conical nut is rotated, the conical nut moves along the axial direction of the sliding sleeve, so that the effective inner diameter of the sliding sleeve becomes smaller.

2. The laparoscopic surgical puncture device according to claim 1, characterized in that: The cam is adapted to engage the engagement of the locking plate with the locking plate, the locking plate being adapted to engage the locking plate when the locking plate is engaged.

3. The laparoscopic surgical puncture device according to claim 2, characterized in that: The position adjustment assembly includes a height adjustment assembly, a horizontal distance adjustment assembly and an angle adjustment assembly. One end of the height adjustment assembly is connected to the clamping assembly, the other end of the height adjustment assembly is connected to the horizontal distance adjustment assembly, the free end of the horizontal distance adjustment assembly is connected to the angle adjustment assembly, and the free end of the angle adjustment assembly is connected to the limiting plate.

4. The laparoscopic surgical puncture device according to claim 3, characterized in that: The height adjustment assembly includes a threaded tube, both ends of which are connected to threaded rods via threads, and the threads of the two threaded rods have opposite rotation directions.

5. The laparoscopic surgical puncture device according to claim 3, characterized in that: The horizontal distance adjustment assembly includes a telescopic tube and a telescopic rod. The telescopic tube is slidably sleeved on the telescopic rod. The telescopic tube is provided with a limiting piece for limiting the sliding of the telescopic tube.

6. The laparoscopic surgical puncture device according to claim 5, characterized in that: The outer wall of the telescopic rod is provided with a key groove, the inner wall of the telescopic tube is provided with a flat key, the flat key is matched with the key groove, and the flat key is slidably connected in the key groove.

7. The laparoscopic surgical puncture device according to claim 3, characterized in that: The angle adjustment assembly includes a sleeve, a spring and a connecting rod, the sleeve is connected to the horizontal distance adjustment assembly, an internal spline is provided at one end of the sleeve close to the horizontal distance adjustment assembly, one end of the connecting rod is slidably connected to the sleeve, the other end of the connecting rod is connected to the limit plate, and the end of the connecting rod close to the internal spline is connected with an external spline that cooperates with the internal spline; and the end of the sleeve away from the horizontal distance adjustment assembly is a plain wall section, the length of the plain wall section is greater than the length of the internal spline; the spring is sleeved on the outer wall of the connecting rod, one end of the spring is connected to the end face of the external spline, and the other end of the spring is connected to the end of the sleeve away from the internal spline.

8. The laparoscopic surgical puncture device according to claim 7, characterized in that: The outer edge of the sleeve is connected with a scale plate, and the connecting rod is connected with a pointer; and scale lines are provided on the sleeve.

9. The laparoscopic surgical puncture device according to claim 2, characterized in that: The clamping assembly includes a U-shaped frame, the U-shaped frame is connected to a bolt through a thread, and the bolt is connected to a clamping plate; the clamping plate is provided with a plurality of anti-slip strips.

10. The laparoscopic surgical puncture device according to claim 2, characterized in that: The slider is connected to a fixing plate, the fixing plate is parallel to the limiting plate, and the fixing plate is threadedly connected to a tightening screw.

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