Adjustable multi-angle precise puncture hook for pelvic floor reconstruction operation

Abstract

The invention discloses an adjustable multi-angle precise puncture hook for pelvic floor reconstruction surgery, and relates to the technical field of medical instruments, the adjustable multi-angle precise puncture hook comprises a puncture hook body, the puncture hook body comprises a grab handle, a puncture straight part, a puncture bent part and a puncture part, the puncture straight part is installed at the top end of the grab handle, and the puncture bent part is installed at the top end of the puncture straight part; the puncture bent part and the puncture straight part are integrally formed and are hollow, the puncture part is installed at the top end of the puncture bent part, and the puncture part and the puncture bent part are connected through a steering mechanism; the puncture part comprises a puncture needle, a protection mechanism is arranged on the outer side of the puncture part, and a steering adjusting mechanism and a protection cover control mechanism are arranged on the surface of the grab handle. The steering mechanism is arranged between the puncture part and the puncture bent part, and the steering adjusting mechanism on the grab handle is combined, so that the angle of the puncture needle is flexibly adjusted; excessive traction or tissue damage caused by forcibly using a fixed-angle instrument is avoided; the blind penetration probability is reduced, and the probability that the mesh is accurately placed into the target ligament is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically to an adjustable multi-angle precision puncture hook for pelvic floor reconstruction surgery. Background Technology

[0002] Pelvic floor dysfunction (PFD) is a common condition that seriously affects women's quality of life, mainly manifested as pelvic organ prolapse (POP) and stress urinary incontinence (SUI). POP refers to the downward displacement of pelvic organs (such as the uterus, bladder, and rectum) into the vagina or even prolapse outside the body due to weak pelvic floor support structures, requiring surgical anatomical repositioning. Currently, transvaginal mesh pelvic floor reconstruction has become the mainstream surgical procedure for treating moderate to severe POP. Its core lies in using puncture instruments to precisely anchor synthetic mesh at key anatomical sites such as the sacrospinous ligament and sacroiliac ligament to reconstruct the pelvic floor support structures.

[0003] However, existing puncture instruments face significant technical bottlenecks in clinical applications, severely restricting surgical safety and efficacy, as detailed below:

[0004] Traditional puncture hooks are mostly designed with a single curved metal rod, and their preset angles are difficult to adapt to the complex three-dimensional anatomy of the pelvic floor. Due to significant individual differences in pelvic floor morphology (such as ligament misalignment and varying vaginal depth), operators often have to rely on experience to "blindly puncture" or repeatedly adjust the instrument angle, resulting in an unstable puncture path. This non-standardized operation not only prolongs the operation time but may also cause tissue damage due to excessive traction or misjudgment. The non-adjustable angle design makes the puncture path prone to deviating from the optimal anatomical level (such as penetrating the vaginal mucosa, damaging neurovascular bundles, or accidentally entering adjacent organs), increasing the risk of bleeding, infection, and organ damage.

[0005] Moreover, traditional puncture hook instruments are not equipped with active protection devices. During the transport and positioning stages, the puncture hook may accidentally come into contact with surrounding tissues, causing iatrogenic injuries (such as vaginal mucosal scratches or blood vessel rupture).

[0006] Therefore, it is necessary to propose an adjustable, multi-angle precision puncture hook for pelvic floor reconstruction surgery to solve the above problems. Summary of the Invention

[0007] (a) Technical problems to be solved

[0008] The purpose of this invention is to address the problems of rigid operation and insufficient precision caused by the fixed angle of existing puncture hooks, as well as the potential for iatrogenic injury caused by accidental contact with surrounding tissues during transport and positioning. This invention provides an adjustable multi-angle precision puncture hook for pelvic floor reconstruction surgery.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0011] An adjustable multi-angle precision puncture hook for pelvic floor reconstruction surgery includes a puncture hook body. The puncture hook body includes a handle, a straight puncture section, a curved puncture section, and a puncture part. The straight puncture section is mounted on the top of the handle, and the curved puncture section is mounted on the top of the straight puncture section. The curved puncture section and the straight puncture section are integrally formed and hollow. The puncture part is mounted on the top of the curved puncture section, and the puncture part and the curved puncture section are connected by a steering mechanism. The puncture part includes a puncture needle, and the top of the puncture needle has a guide hole. A protective mechanism is provided on the outer side of the puncture part.

[0012] The surface of the grip is provided with a steering adjustment mechanism and a protective cover control mechanism.

[0013] By adopting the above technical solution, and by setting a steering mechanism between the puncture section and the puncture bend, combined with the steering adjustment mechanism on the handle, the angle of the puncture needle can be flexibly adjusted, thus avoiding excessive traction or tissue damage caused by forcibly using instruments with a fixed angle.

[0014] When not in use, the protective mechanism completely covers the puncture needle, effectively preventing accidental contact during transport, positioning, and other processes.

[0015] The invention is further configured such that: the steering mechanism includes a first rotating shaft fixedly connected to both sides of the bottom of the puncture needle, the first rotating shaft being rotatably connected to the top of the puncture bend; a bend transmission channel is provided in the middle of the puncture bend, a guide post is fixedly connected inside the bend transmission channel, angle control protrusions are symmetrically fixedly connected to the bottom of the puncture needle, a left angle pull rope and a right angle pull rope are respectively fixedly connected to the two angle control protrusions, the left angle pull rope and the right angle pull rope cross the guide post, the left angle pull rope and the right angle pull rope pass through the bend transmission channel and extend into the handle; the steering adjustment mechanism includes a fixed shaft rotatably connected inside the handle, a storage roller is fixedly connected to the outside of the fixed shaft, and the ends of the left angle pull rope and the right angle pull rope are symmetrically fixedly connected to both sides of the storage roller.

[0016] By adopting the above technical solution, during puncture, the hand holds the handle and places the puncture part and puncture bend of the puncture hook into the anatomical site to be punctured at the bottom of the pelvis. When the puncture needle deviates, simply use the thumb to turn the adjustment knob. The adjustment knob drives the worm gear to rotate, and the worm gear drives the receiving roller to rotate through the worm wheel. When the receiving roller rotates, it will receive one angle pull rope and release the other angle pull rope. For example, when it is necessary to adjust the angle to the left, the left angle pull rope is received while the right angle pull rope is released. The left angle pull rope is used to control the angle, and the right angle pull rope is used to tighten the puncture needle and provide stable support, thereby achieving the purpose of controlling the angle.

[0017] The present invention is further configured such that: a worm gear is fixedly connected to the outer side of the fixed shaft, a worm is engaged with one end of the worm gear, the worm is rotatably connected to the handle, and one end of the worm extends out of the handle and is fixedly connected to an adjustment knob.

[0018] By adopting the above technical solution, the worm gear and worm have a self-locking effect. When the adjustment knob is stopped, that is, when the worm is stationary, the tension is transmitted to the worm gear through the pull rope after the puncture needle is subjected to force. Even if the worm gear is subjected to force, it cannot drive the worm to rotate, thus ensuring the stability of the angle.

[0019] The invention is further configured such that: the protective mechanism includes a storage ring fixed to the outside of the puncture needle; a support spring is provided inside the storage ring; a protective ring is fixedly connected to the top of the support spring; a pull rope fixing seat is fixedly connected to one side of the top of the inner end of the protective ring; a puncture part transmission channel is opened inside the puncture part transmission channel; a storage pull rope is provided inside the puncture part transmission channel; one end of the storage pull rope extends out of the puncture needle and is fixedly connected to the pull rope fixing seat; the other end of the storage pull rope passes through the puncture bend and the puncture straight part and enters the handle; a fixing block is slidably connected inside the handle; the fixing block is fixedly connected to the end of the storage pull rope; the top of the fixing block extends out of the surface of the handle and is fixedly connected to an adjusting slider; a groove is opened between the fixing block and the handle.

[0020] By adopting the above technical solution, the top of the protective ring is higher than the top of the puncture needle, which can block the puncture needle. The thumb moves the adjusting slider, which drives the fixing block to move. The fixing block pulls the storage rope, and the storage rope drives the protective ring to move backward through the rope fixing seat, so that the protective ring retracts into the storage ring.

[0021] The invention is further configured such that: a slot is provided on the other side of the inner top of the protective ring; an installation slot is provided on one side of the puncture needle, a limiting block is slidably connected inside the installation slot, a locking rope is fixedly connected to the end of the limiting block, a return spring is sleeved on the outside of the locking rope, the return spring is located between the installation slot and the limiting block, and the end of the locking rope away from the limiting block extends into the puncture section transmission channel; a first guide pulley is rotatably connected inside the puncture section transmission channel, and the locking rope extends into the handle after passing through the first guide pulley, the puncture bend and the puncture straight section in sequence, the first guide pulley guides the locking rope to bend at 90 degrees, a second guide pulley is rotatably connected inside the handle, a release button is provided on one side of the second guide pulley, the top of the release button extends out of the handle and is slidably connected to the handle, and the locking rope passes around the second guide pulley and is fixedly connected to the bottom of the release button.

[0022] By adopting the above technical solution, the limiting block at the bottom of the protective ring moves outward under the tension of the return spring, limiting the protective ring and preventing it from retracting. When puncture is required, first press the release button with your thumb. The release button pulls the locking block rope, which pulls the limiting block, causing it to retract into the mounting groove. At this time, the protective ring is unrestrained. Then, move your thumb down to move the adjusting slider, which moves the fixing block. The fixing block pulls the storage rope, which, through the rope fixing seat, moves the protective ring backward, causing it to retract into the storage ring. When the groove on the protective ring corresponds to the limiting block, the limiting block extends out of the mounting groove and inserts into the groove under the tension of the return spring, limiting the protective ring and preventing it from resetting and affecting puncture.

[0023] When protection is still needed, simply press the release button again. The release button will pull the limit block into the mounting groove. At this time, the protective ring will extend outward under the tension of the support spring. After the protective ring resets, the limit block will extend outward again under the tension of the return spring and lock into the bottom of the protective ring to prevent the protective ring from retracting.

[0024] (III) Beneficial Effects

[0025] The beneficial effects of this invention are as follows:

[0026] 1. This invention achieves flexible adjustment of the puncture needle angle by incorporating a steering mechanism between the puncture site and the puncture bend, combined with a steering adjustment mechanism on the handle; avoiding excessive traction or tissue damage caused by forcibly using instruments at a fixed angle; significantly reducing the probability of "blind puncture" and increasing the probability of accurate placement of the mesh into the target ligament (such as improving the success rate of sacrospinous ligament suspension); shortening the surgical learning curve, allowing novice physicians to quickly master key operating steps. Correcting deviation with a pull cord reduces iatrogenic injury; and lowers the incidence of serious complications such as massive bleeding and infection.

[0027] 2. In the non-operating state, the protective ring completely covers the puncture needle, which can effectively prevent accidental contact during transportation, positioning and other processes. The precise cooperation between the slot and the limiting block ensures that the protective ring automatically locks in the non-operating state, avoiding accidental unfolding due to instrument shaking. Only the thumb is needed to complete the pressing and sliding action, which conforms to the ergonomic design and reduces operator fatigue. Attached Figure Description

[0028] Figure 1 This is a three-dimensional schematic diagram of the puncture hook body structure of the present invention;

[0029] Figure 2 This is a cross-sectional schematic diagram of the steering mechanism of the present invention;

[0030] Figure 3 This is a three-dimensional schematic diagram of the steering adjustment mechanism of the present invention;

[0031] Figure 4 This is a three-dimensional schematic diagram of the protective mechanism of the present invention;

[0032] Figure 5 This is a first cross-sectional schematic diagram of the protective mechanism of the present invention;

[0033] Figure 6 This is a second cross-sectional schematic diagram of the protective mechanism of the present invention;

[0034] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point B;

[0035] Figure 8 This is a three-dimensional schematic diagram of the protective cover control mechanism of the present invention;

[0036] Figure 9 For the present invention Figure 1 An enlarged schematic diagram of the structure at point A in the middle.

[0037] Reference numerals: 1. Piercing hook body; 2. Handle; 3. Straight piercing section; 4. Bent piercing section; 5. Piercing part; 6. Steering mechanism; 7. Steering adjustment mechanism; 8. Protective mechanism; 9. Protective cover control mechanism; 10. Piercing needle; 11. Guide hole; 12. First rotating shaft; 13. Angle control protrusion; 14. Left angle pull rope; 15. Right angle pull rope; 16. Guide post; 17. Bent section transmission channel; 18. Fixed shaft; 19. Storage 20. Roller; 21. Worm gear; 22. Worm; 23. Adjusting knob; 24. Storage ring; 25. Support spring; 26. Protective ring; 27. Pull rope fixing seat; 28. Slot; 29. ​​Puncture section transmission channel; 30. Pull rope storage; 31. Fixing block; 32. Adjusting slider; 33. Mounting slot; 34. Limiting block; 35. Block pull rope; 36. Return spring; 37. First guide pulley; 38. Second guide pulley; 39. Release button. Detailed Implementation

[0038] The technical solutions in the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments.

[0039] In the description of the invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0040] In this invention, unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances.

[0041] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] Example 1

[0043] Please see Figures 1 to 3 An adjustable multi-angle precision puncture hook for pelvic floor reconstruction surgery includes a puncture hook body 1. The puncture hook body 1 includes a handle 2, a straight puncture section 3, a curved puncture section 4, and a puncture part 5. The straight puncture section 3 is installed at the top of the handle 2, and the curved puncture section 4 is installed at the top of the straight puncture section 3. The curved puncture section 4 and the straight puncture section 3 are integrally formed and hollow. The puncture part 5 is installed at the top of the curved puncture section 4. The puncture part 5 and the curved puncture section 4 are connected by a turning mechanism 6. The puncture part 5 includes a puncture needle 10, and a guide hole 11 is opened at the top of the puncture needle 10.

[0044] A protective mechanism 8 is provided on the outside of the puncture site 5;

[0045] The surface of the grip 2 is provided with a steering adjustment mechanism 7 and a protective cover control mechanism 9;

[0046] The steering mechanism 6 includes first rotating shafts 12 fixedly connected to both sides of the bottom of the puncture needle 10.

[0047] The first rotating shaft 12 is rotatably connected to the top of the puncture bend 4. A bend transmission channel 17 is provided in the middle of the puncture bend 4. A guide post 16 is fixedly connected inside the bend transmission channel 17. Angle control protrusions 13 are symmetrically fixedly connected to the bottom of the puncture needle 10. A left angle pull rope 14 and a right angle pull rope 15 are fixedly connected to the two angle control protrusions 13 respectively. The left angle pull rope 14 and the right angle pull rope 15 cross the guide post 16 and pass through the bend transmission channel 17 and extend into the handle 2.

[0048] The steering adjustment mechanism 7 includes a fixed shaft 18 rotatably connected inside the handle 2. A storage roller 19 and a worm gear 20 are fixedly connected to the outside of the fixed shaft 18. The ends of the left angle pull rope 14 and the right angle pull rope 15 are symmetrically fixedly connected to both sides of the storage roller 19. One end of the worm gear 20 is meshed with a worm 21, which is rotatably connected to the handle 2. One end of the worm 21 extends out of the handle 2 and is fixedly connected to an adjustment knob 22.

[0049] In this embodiment, by providing a steering mechanism 6 between the puncture part 5 and the puncture bend 4, and by providing a steering adjustment mechanism 7 on the handle 2, it is convenient to adjust the angle of the puncture needle 10. After the puncture path deviates from the optimal anatomical level, the optimal anatomical level position can be achieved by adjusting the angle of the puncture needle 10.

[0050] Specifically, during puncture, the handle 2 should be held and the puncture part 5 and puncture bend 4 of the puncture hook should be placed into the anatomical site to be punctured at the bottom of the pelvis. When the puncture needle 10 deviates, the adjustment knob 22 can be turned with the thumb. The adjustment knob 22 drives the worm gear 21 to rotate. The worm gear 21 drives the storage roller 19 to rotate through the worm wheel 20. When the storage roller 19 rotates, it will store one angle pull rope and release the other angle pull rope. For example, when it is necessary to adjust the angle to the left, the left angle pull rope 14 is stored while the right angle pull rope 15 is released. The left angle pull rope 14 is used to control the angle, and the right angle pull rope 15 is used to tighten the puncture needle 10 to provide stable support, thereby achieving the purpose of controlling the angle.

[0051] Another innovation of this device lies in the coordinated working mode of the worm gear transmission system and the tension rope system. When the adjustment knob 22 stops rotating, the worm 21 is stationary, and the tension generated by the tissue reaction force of the puncture needle 10 is transmitted to the worm gear 20 through the tension rope. At this time, the unique self-locking characteristic of the worm gear prevents the generation of reverse torque, thus locking the angle adjustment state. This mechanical self-locking mechanism has significant advantages over electromagnetic braking or spring reset methods. First, it completely eliminates the dependence on electrical energy and can remain stable in the electromagnetic interference environment of the operating room. Second, it has high frictional torque and can withstand large tissue traction without angular deviation.

[0052] The above design avoids excessive traction or tissue damage caused by forcibly using instruments at fixed angles; significantly reduces the probability of "blind puncture" and increases the probability of accurate placement of the mesh into the target ligament (such as improving the success rate of sacrospinous ligament suspension); shortens the surgical learning curve, allowing novice physicians to quickly master key operating steps. Furthermore, the puncture needle automatically corrects deviation through a pull cord system after being subjected to force, reducing iatrogenic injury; and lowering the incidence of serious complications such as massive bleeding and infection.

[0053] Example 2

[0054] Please see Figures 4 to 9 This embodiment is a further optimization based on embodiment 1. Specifically, the protective mechanism 8 includes a storage ring 23 fixed to the outside of the puncture needle 10. The storage ring 23 has a support spring 24 inside. The top of the support spring 24 is fixedly connected to a protective ring 25. The top of the protective ring 25 is higher than the top of the puncture needle 10. A pull rope fixing seat 26 is fixedly connected to one side of the top of the inner part of the protective ring 25. The puncture needle 10 has a puncture part transmission channel 28 inside. The puncture part transmission channel 28 has a storage pull rope 29 inside. One end of the storage pull rope 29 extends out of the puncture needle 10 and is fixedly connected to the pull rope fixing seat 26. The other end of the storage pull rope 29 passes through the puncture bend 4 and the puncture straight part 3 and enters the handle 2. A fixing block 30 is slidably connected inside the handle 2. The fixing block 30 is fixedly connected to the end of the storage pull rope 29. The top of the fixing block 30 extends out of the surface of the handle 2 and is fixedly connected to an adjusting slider 31. A groove is opened between the fixing block 30 and the handle 2.

[0055] A slot 27 is provided on the other side of the inner top of the protective ring 25;

[0056] A mounting groove 32 is provided on one side of the puncture needle 10. A limit block 33 is slidably connected inside the mounting groove 32. A pull rope 34 is fixedly connected to the end of the limit block 33. A return spring 35 is sleeved on the outside of the pull rope 34. The return spring 35 is located between the mounting groove 32 and the limit block 33 and is used to provide an outward thrust for the limit block 33. The end of the pull rope 34 away from the limit block 33 extends into the puncture section transmission channel 28, and a first guide pulley 36 is rotatably connected inside the puncture section transmission channel 28. The rope 34 passes through the first guide pulley 36, the piercing bend 4, and the piercing straight section 3 in sequence before extending into the handle 2. The first guide pulley 36 guides the locking block rope 34 to bend at 90 degrees. The handle 2 is rotatably connected to the second guide pulley 37. A release button 38 is provided on one side of the second guide pulley 37. The top of the release button 38 extends out of the handle 2 and slides in connection with the handle 2. The locking block rope 34 passes around the second guide pulley 37 and is fixedly connected to the bottom of the release button 38. The second guide pulley 37 guides the locking block rope 34 to bend at 90 degrees.

[0057] In this embodiment, by setting up a protective mechanism 8, the protective ring 25 is used to shield the puncture needle 10 to prevent the puncture needle 10 from accidentally injuring other tissues when it is placed. The protective ring 25 is then removed after the puncture site is reached, and the puncture needle 10 is used for puncture.

[0058] Specifically, under normal circumstances, such as Figure 6 As shown, the top of the protective ring 25 is higher than the top of the puncture needle 10, which can block the puncture needle 10. The limiting block 33 at the bottom of the protective ring 25 moves outward under the tension of the return spring 35, limiting the protective ring 25 and preventing it from retracting. When puncture is required, first press the release button 38 with your thumb. The release button 38 pulls the locking block pull rope 34, which pulls the limiting block 33. The limiting block 33 retracts into the mounting groove 32. At this time, the protective ring 25 is unrestrained. Then, the thumb moves down to move the adjusting slider 31. The adjusting slider 31 moves the fixing block 30, which pulls the storage pull rope 29. The storage pull rope 29 moves the protective ring 25 backward through the pull rope fixing seat 26, causing the protective ring 25 to retract into the storage ring 23. When the locking groove 27 on the protective ring 25 corresponds to the limiting block 33, as shown... Figure 7 As shown, the limiting block 33 extends out of the mounting groove 32 and inserts into the slot 27 under the tension of the return spring 35, limiting the protective ring 25; preventing the protective ring 25 from resetting and affecting the puncture.

[0059] When protection is still needed, simply press the release button 38 again. The release button 38 will pull the limit block 33 into the mounting groove 32. At this time, the protective ring 25 extends outward under the tension of the support spring 24. After the protective ring 25 is reset, the limit block 33 extends outward under the tension of the return spring 35 and locks at the bottom of the protective ring 25 to prevent the protective ring 25 from retracting.

[0060] The automatic response of the protective ring 25 is achieved through the storage ring 23, the protective ring 25, and the support spring 24. In the non-puncture state, the support spring 24 continuously pushes the protective ring 25 to a position higher than the tip of the puncture needle 10, forming a physical isolation barrier. When puncture is required, the retraction pull rope 29 can be triggered by operating the adjusting slider 31 with one hand, causing the protective ring 25 to retract into the storage ring 23. The unfolding / retraction of the protective ring 25 is achieved entirely by spring tension, without the need for electricity or additional control components. The mechanical interlock between the slot 27 and the limit block 33 ensures that the protective ring 25 is unlocked only during active operation, and remains in a safe state under abnormal external forces.

[0061] By employing a linkage mechanism between the release button 38 and the adjustment slider 31, the traditional multi-step operation (such as unscrewing screws or separating components) is simplified to a two-step action of "pressing + sliding". The specific path is as follows:

[0062] Storage process: Press release button 38, pull the locking block rope 34, the limit locking block 33 retracts, the protective ring 25 is unrestrained, slide the adjustment slider 31, and the protective ring 25 is stored.

[0063] Unfolding process: Press the release button 38 again, the limit block 33 pops out and locks into the new position, and the support spring 24 pushes the protective ring 25 to unfold.

[0064] The above settings shorten the time required for a single switch; the return spring 35 provides constant external tension to the limit block 33, avoiding uncertainty during manual adjustment; even if the operator accidentally touches the adjustment slider 31, the limit block 33 can still automatically maintain the safe state of the protective ring 25.

[0065] In addition, such as Figure 4 , Figure 6 and Figure 7 As shown, the top and bottom of the protective ring 25, the storage ring 23, and the storage ring 23 are all equipped with arc transition structures that match the curvature of the puncture needle 10. The arc structure perfectly matches the curvature of the puncture needle 10, eliminating the jamming effect caused by traditional right-angle edges and avoiding displacement caused by interference from sharp corners. This design forms a continuous and smooth transition structure, which significantly reduces the risk of tissue snagging during puncture by eliminating sharp corners and abrupt cross sections. During the insertion and withdrawal phase, when the puncture needle enters and exits, the arc surface reduces mechanical friction on the vaginal mucosa, ligaments, and other tissues, avoiding tissue tearing or instrument displacement caused by jamming. During dynamic operation, the smooth contour of the protective ring can reduce the traction resistance on the surrounding soft tissues during mesh traction or tissue separation, reducing the incidence of postoperative pain.

[0066] In summary, this invention, by setting a steering mechanism 6 between the puncture section 5 and the puncture bend 4, combined with the steering adjustment mechanism 7 on the handle 2, achieves flexible adjustment of the angle of the puncture needle 10. When the puncture path deviates from the optimal anatomical level, the worm gear 21 can be driven to rotate by adjusting the knob 22, thereby adjusting the tension of the left angle pull rope 14 and the right angle pull rope 15, so that the puncture needle 10 can quickly return to the ideal angle position, significantly improving the accuracy and success rate of surgical operations.

[0067] The symmetrically arranged pull rope system (left angle pull rope 14 and right angle pull rope 15) forms a differential tightening mechanism. For example, when adjusting to the left, the left rope tightens while the right rope releases, which not only achieves the angle change but also provides a reverse pull force through the right rope to maintain the stable support of the puncture needle 10. This redundant design enhances the reliability of operation.

[0068] The transmission structure employs the meshing of worm gear 20 and worm 21, which has a self-locking characteristic. When adjustment stops, even if the puncture needle 10 is displaced or vibrates due to force, the torque transmitted by the pull rope cannot drive the worm 21 to rotate in the opposite direction, thus ensuring the stability of the adjusted angle and avoiding the risk of accidental displacement during the operation.

[0069] The puncture bend 4 adopts a one-piece hollow structure, internally integrating the guide post 16 and the bend transmission channel 17, effectively reducing the number of parts and optimizing the spatial layout of the puncture path. The linkage design between the angle control protrusion 13 and the pull rope further reduces the complexity of the mechanism and improves the compactness of the overall structure.

[0070] The present invention uses a protective structure composed of a storage ring 23, a protective ring 25 and a support spring 24. In the non-working state, the protective ring 25 is always higher than the tip of the puncture needle 10 due to the spring tension, forming a physical isolation barrier, which can effectively prevent the instrument from accidentally contacting the surrounding tissue.

[0071] An innovative linkage mechanism between the release button 38 and the adjustment slider 31 is adopted. The operator only needs to complete two steps, pressing the button and sliding the slider, with one hand to quickly retract / unfold the protective ring 25; the precise cooperation between the slot 27 and the limit block 33 ensures that the protective ring 25 automatically locks when not in operation, preventing accidental reset.

[0072] The limiting block 33 maintains outward tension under the action of the return spring 35. The locking block pull rope 34 at its end achieves a 90° path turn through the double guide pulleys (first guide pulley 36 and second guide pulley 37), ensuring the effective transmission of the locking force. This mechanical interlocking design ensures that the protective ring 25 can still maintain a safe state under abnormal external force.

[0073] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. An adjustable multi-angle precision puncture hook for pelvic floor reconstruction surgery, comprising a puncture hook body (1), characterized in that: The piercing hook body (1) includes a handle (2), a straight piercing part (3), a curved piercing part (4), and a piercing part (5). The straight piercing part (3) is installed at the top of the handle (2), the curved piercing part (4) is installed at the top of the straight piercing part (3), the curved piercing part (4) and the straight piercing part (3) are integrally formed and hollow, the piercing part (5) is installed at the top of the curved piercing part (4), and the piercing part (5) and the curved piercing part (4) are connected by a steering mechanism (6). The puncture part (5) includes a puncture needle (10), and a guide hole (11) is provided at the top of the puncture needle (10). The puncture part (5) is provided with a protective mechanism (8) on the outside. The surface of the grip (2) is provided with a steering adjustment mechanism (7) and a protective cover control mechanism (9).

2. The adjustable multi-angle precision puncture hook for pelvic floor reconstruction surgery according to claim 1, characterized in that: The steering mechanism (6) includes a first rotating shaft (12) fixedly connected to both sides of the bottom of the puncture needle (10), and the first rotating shaft (12) is rotatably connected to the top of the puncture bend (4).

3. The adjustable multi-angle precision puncture hook for pelvic floor reconstruction surgery according to claim 2, characterized in that: The puncture bend (4) has a bend transmission channel (17) in the middle. A guide post (16) is fixedly connected inside the bend transmission channel (17). Angle control protrusions (13) are symmetrically fixedly connected to the bottom of the puncture needle (10). A left angle pull rope (14) and a right angle pull rope (15) are fixedly connected to the two angle control protrusions (13) respectively. The left angle pull rope (14) and the right angle pull rope (15) cross the guide post (16). The left angle pull rope (14) and the right angle pull rope (15) pass through the bend transmission channel (17) and extend into the handle (2).

4. The adjustable multi-angle precision puncture hook for pelvic floor reconstruction surgery according to claim 3, characterized in that: The steering adjustment mechanism (7) includes a fixed shaft (18) rotatably connected inside the handle (2), and a storage roller (19) is fixedly connected to the outside of the fixed shaft (18). The ends of the left angle pull rope (14) and the right angle pull rope (15) are symmetrically fixedly connected to both sides of the storage roller (19).

5. The adjustable multi-angle precision puncture hook for pelvic floor reconstruction surgery according to claim 4, characterized in that: A worm gear (20) is fixedly connected to the outside of the fixed shaft (18). One end of the worm gear (20) is meshed with a worm (21). The worm (21) is rotatably connected to the handle (2). One end of the worm (21) extends out of the handle (2) and is fixedly connected to an adjustment knob (22).

6. The adjustable multi-angle precision puncture hook for pelvic floor reconstruction surgery according to claim 1, characterized in that: The protective mechanism (8) includes a storage ring (23) fixed to the outside of the puncture needle (10). The storage ring (23) is provided with a support spring (24). The top of the support spring (24) is fixedly connected to a protective ring (25). The top of the protective ring (25) is fixedly connected to a pull rope fixing seat (26). The puncture needle (10) is provided with a puncture part transmission channel (28). The puncture part transmission channel (28) is provided with a storage pull rope (29). One end of the storage pull rope (29) extends out of the puncture needle (10) and is fixedly connected to the pull rope fixing seat (26). The other end of the storage pull rope (29) passes through the puncture bend (4) and the puncture straight part (3) and enters the handle (2).

7. The adjustable multi-angle precision puncture hook for pelvic floor reconstruction surgery according to claim 6, characterized in that: The handle (2) is slidably connected to a fixing block (30), which is fixedly connected to the end of the storage pull rope (29). The top of the fixing block (30) extends out of the surface of the handle (2) and is fixedly connected to an adjusting slider (31). A groove is provided between the fixing block (30) and the handle (2).

8. The adjustable multi-angle precision puncture hook for pelvic floor reconstruction surgery according to claim 1, characterized in that: A slot (27) is provided on the other side of the inner top of the protective ring (25); The puncture needle (10) has an installation groove (32) on one side. A limit block (33) is slidably connected inside the installation groove (32). A pull rope (34) is fixedly connected to the end of the limit block (33). A return spring (35) is sleeved on the outside of the pull rope (34). The return spring (35) is located between the installation groove (32) and the limit block (33). The end of the pull rope (34) away from the limit block (33) extends into the puncture section transmission channel (28).

9. The adjustable multi-angle precision puncture hook for pelvic floor reconstruction surgery according to claim 8, characterized in that: The puncture section transmission channel (28) is internally rotatably connected to a first guide pulley (36). The locking block pull rope (34) passes through the first guide pulley (36), the puncture bend (4), and the puncture straight section (3) in sequence before extending into the handle (2). The first guide pulley (36) guides the locking block pull rope (34) to bend at 90 degrees. The handle (2) is internally rotatably connected to a second guide pulley (37). A release button (38) is provided on one side of the second guide pulley (37). The top of the release button (38) extends out of the handle (2) and slides with the handle (2). The locking block pull rope (34) passes around the second guide pulley (37) and is fixedly connected to the bottom of the release button (38).

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