A multi-leaf adjustable speculum

Abstract

The application discloses a multi-leaf adjustable speculum, which can effectively perform multi-leaf distraction during a surgery process, and comprises a hand-held frame, the upper side of the hand-held frame is provided with a first rotating frame, the upper side of the first rotating frame is provided with a second rotating frame, and a limiting mechanism is arranged between the first rotating frame and the second rotating frame; the front side of the first rotating frame is provided with a lower side arc frame, the outer side of the lower side arc frame is provided with a lower side leaf assembly; the front side of the second rotating frame is provided with an upper side arc frame, and the outer side of the upper side arc frame is provided with an upper side leaf assembly; the speculum has novel structure, ingenious design, simple and convenient operation, effectively expands the intraoperative visual field of medical staff, facilitates the operation of the medical staff, reduces the use cost of the device, guarantees the safety of the device, facilitates the adjustment of the distraction angle of the speculum, and increases the function of single-handedly realizing the operation of the distraction angle adjustment.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology and relates to a multi-leaf adjustable speculum. Background Technology

[0002] Cervical conization, loop electrosurgical excision procedure (LEEP), vaginal hematoma repair, vaginal wall repair, and other cervical and vaginal surgeries are common gynecological procedures. The core prerequisite for these procedures is adequate exposure of the surgical field, achieved through the use of traditional vaginal speculum or vaginal retractors. However, current clinical procedures have the following shortcomings:

[0003] 1. Traditional vaginal speculum: A traditional vaginal speculum consists of upper and lower blades, which are manually opened to expose the vagina and cervix. This instrument has the following shortcomings in practical application:

[0004] (1) For obese patients, patients with vaginal laxity, or patients with obvious vaginal lateral wall prolapse, the cervix cannot be fully exposed by the support of the upper and lower leaves alone, and the collapse of the lateral wall tissue leads to a severely limited field of vision.

[0005] (2) When using an electrocautery knife for cutting or electrocoagulation during the operation, a large amount of smoke generated locally cannot be discharged in time, which seriously affects the surgeon's field of vision. The operation needs to be paused repeatedly to wait for the smoke to dissipate or for an assistant to help smoke, thus prolonging the operation time.

[0006] (3) For cervical suturing, the space of the two-bladed speculum is small, the range of motion of the needle holder and suture needle is severely limited, and the operation is difficult.

[0007] (4) The blades are a fixed integral structure and cannot be adjusted by separate blades, so they cannot flexibly meet the support requirements of different parts of the sidewall.

[0008] 2. Vaginal retractors: Vaginal retractors (such as right-angle retractors, S-shaped retractors, etc.) are commonly used auxiliary exposure tools in cervical conization and vaginal surgery. An assistant holds the retractor and pulls on the vaginal wall to expand the field of vision. Their disadvantages are:

[0009] (1) It requires a dedicated assistant to continuously pull it, resulting in high labor costs;

[0010] (2) When the assistant is inexperienced, it is difficult to accurately control the traction force and direction, which may lead to unstable exposure or excessive traction, resulting in tissue damage.

[0011] (3) The assistant's pulling on the hands interferes with the surgeon's operating space, further reducing the surgeon's operating range;

[0012] (4) Prolonged traction causes fatigue in the assistant's arm, making it difficult to maintain a stable exposure effect.

[0013] Therefore, a multi-leaf adjustable speculum is needed to solve the above problems. Each leaf can be adjusted independently, and it also has an integrated suction function and reserves space for suturing operations. Summary of the Invention

[0014] To address the aforementioned problems, this invention proposes a multi-leaf adjustable speculum, which effectively solves the problems in the prior art.

[0015] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0016] A multi-leaf adjustable speculum includes a handheld frame, a first rotating frame fixedly connected to the upper side of the handheld frame, a second rotating frame rotatably connected to the upper side of the first rotating frame, and a limiting mechanism for limiting the angle of the second rotating frame between the first rotating frame and the second rotating frame.

[0017] The front side of the first rotating frame is detachably connected to a lower arc frame, and the outer side of the lower arc frame is provided with a lower blade assembly that can move along the lower arc frame.

[0018] The front side of the second rotating frame is detachably connected to an upper arc frame, and the outer side of the upper arc frame is provided with an upper blade assembly that can move along the upper arc frame.

[0019] The lower blade assembly includes a lower first blade and a lower second blade; the upper blade assembly includes an upper first blade and an upper second blade; the lower first blade, the lower second blade, the upper first blade, and the upper second blade cooperate with each other to form a multi-leaf open structure;

[0020] The lower first blade, the lower second blade, the upper first blade, and the upper second blade are all provided with suction holes for negative pressure suction.

[0021] Preferably, the upper arc frame includes an upper disassembly plate, an upper suction sleeve is fixedly connected to the rear part of the upper side of the upper disassembly plate, an upper arc rod is fixedly connected to the front side of the upper side of the upper disassembly plate, and the upper suction sleeve and the end of the upper arc rod away from the upper disassembly plate are fixedly connected to each other.

[0022] The lower arc frame includes a lower disassembly plate. A lower suction sleeve is fixedly connected to the rear part of the lower side of the lower disassembly plate. A lower arc-shaped rod is fixedly connected to the front part of the lower part of the lower disassembly plate. The lower suction sleeve and the end of the lower arc-shaped rod away from the lower disassembly plate are fixedly connected to each other.

[0023] Preferably, a first limiting rod is fixedly connected to the rear end of the lower arc frame, and a first limiting groove adapted to the first limiting rod is opened at the front end of the first rotating frame; a second limiting rod is fixedly connected to the rear end of the upper arc frame, and a second limiting groove adapted to the second limiting rod is opened at the front side of the second rotating frame.

[0024] Preferably, a first circular plate is fixedly connected to the upper side of the first rotating frame, and a second circular plate is provided on each of the left and right sides of the first circular plate. The upper side of each second circular plate is fixedly connected to the lower side of the second rotating frame, and a rotating column is fixedly connected to the middle of the first circular plate. Each second circular plate is rotatably connected to the rotating column.

[0025] Preferably, the limiting mechanism includes a plurality of mutually cooperating limiting slots and limiting blocks. The left side of the first rotating frame is provided with a limiting plate that can move left and right. Each limiting block is fixedly connected to the right side of the limiting plate. The left side of the second rotating frame is fixedly connected to a limiting protrusion. Each limiting slot is formed on the left end face of the limiting protrusion. The limiting slots and limiting blocks cooperate with each other to form a structure that limits the angle of the second rotating frame relative to the first rotating frame.

[0026] Preferably, a square rod is fixedly connected to the middle of the right side of the limiting plate. The square rod is slidably connected to the second rotating frame. An operating rod is fixedly connected to the right end of the square rod. A first tension spring is fitted on the outside of the operating rod. The first tension spring applies a rightward pulling force to the square rod.

[0027] Preferably, the right end of the square rod is fixedly connected to two first tilting blocks, and each first tilting block is provided with a second tilting block that can move up and down on its right side. The upper end of each second tilting block is fixedly connected to a second tension spring, which applies an upward pulling force to the corresponding second tilting block. The lower ends of the two second tilting blocks are fixedly connected to a U-shaped frame, which drives the two second tilting blocks to move downward and pushes the two first tilting blocks to move to the left.

[0028] Preferably, the handheld frame has a pull rope inside, the lower end of the pull rope is fixedly connected to the handheld frame, the upper end of the pull rope is fixedly connected to the lower end of the U-shaped frame, the middle part of the handheld frame has an operation button that can move back and forth, the middle part of the operation button has a through groove, the middle part of the pull rope passes through the through groove, and moving the operation button back and forth can cause the upper end of the pull rope to drive the U-shaped frame to move downward.

[0029] Preferably, each of the lower first blade, lower second blade, upper first blade, and upper second blade is fixedly connected to a first suction tube, and each suction hole communicates with the interior of the corresponding first suction tube. The interior of the upper suction sleeve is fixedly connected to an upper suction tube, and the interior of the lower suction sleeve is fixedly connected to a lower suction tube. The upper end of the upper suction tube and the lower end of the lower suction tube are respectively connected to two corrugated suction tubes, and each first suction tube communicates with the corresponding corrugated suction tube.

[0030] Preferably, a support frame is fixedly connected to the left end of the first rotating frame, and a connecting sleeve is detachably connected to the support frame. The lower side of the connecting sleeve is connected to a suction port, and the front side of the connecting sleeve is connected to a first suction port that communicates with the lower suction tube. A connecting groove is opened on the outer side of the right part of the connecting sleeve, and an oblong hole is opened inside the connecting groove. A rotating ring is rotatably connected to the outer side of the connecting groove, and a second suction port that communicates with the upper suction tube is fixedly connected to the outer side of the rotating ring. The second suction port communicates with the oblong hole.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The present invention has a lower blade assembly consisting of a lower first blade and a lower second blade, and an upper blade assembly consisting of an upper first blade and an upper second blade, which can be separated from each other and their angles can be adjusted, and can be adapted to different patients and surgical scenarios.

[0033] 2. This invention has a suction hole for negative pressure suction, which can draw smoke and blood close to the surgical site, making it more efficient and not obstructing the field of vision compared to an external suction tube.

[0034] 3. The present invention has an upper arc frame and a lower arc frame with openings at a certain angle, which can maintain a certain angle of instrument-free field of vision during surgery, thereby facilitating greater exposure at that angle and making surgery and suturing operations easier; the exposure angle can be adjusted by rotating the entire device. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0036] Figure 2 This is a schematic diagram of the overall structure of the present invention.

[0037] Figure 3 This is a schematic diagram of the exploded structure of the present invention.

[0038] Figure 4 This is a schematic diagram of the upper arc frame in this invention.

[0039] Figure 5 This is a schematic diagram of the connecting sleeve in this invention.

[0040] Figure 6 This is a schematic diagram of the lower arc frame in this invention.

[0041] Figure 7 This is a schematic diagram of the limiting slot structure in this invention.

[0042] Figure 8 This is a schematic diagram showing the position of the second tilting block in this invention.

[0043] Figure 9 This is a schematic diagram of the cooperation structure between the pull cord and the operation button in this invention.

[0044] In the diagram: 1. Handheld frame; 2. First rotating frame; 3. Second rotating frame; 4. Lower arc frame; 5. Upper arc frame; 6. Lower first blade; 7. Lower second blade; 8. Upper first blade; 9. Upper second blade; 10. Suction hole; 11. Upper disassembly plate; 12. Upper suction sleeve; 13. Upper arc-shaped rod; 14. Lower suction sleeve; 15. Lower disassembly plate; 16. Lower arc-shaped rod; 17. First limiting rod; 18. First limiting groove; 19. Second limiting rod; 20. Second limiting groove; 21. First circular piece; 22. Second circular piece; 23. Rotating column; 24. 25. Limiting slot; 26. Limiting block; 27. Limiting plate; 28. Limiting protrusion; 29. ​​Square rod; 20. Operating rod; 31. First tension spring; 32. First tilting block; 33. Second tilting block; 34. Second tension spring; 35. U-shaped frame; 36. Pull rope; 37. Operating button; 38. Through slot; 39. First suction tube; 40. Upper suction tube; 41. Lower suction tube; 42. Corrugated suction tube; 43. Support frame; 44. Connecting sleeve; 45. First suction port; 46. Connecting groove; 47. Waist-shaped hole; 48. Rotating ring; 49. Second suction port; 40. Suction device connection port. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] The following is in conjunction with the appendix Figures 1 to 9 The specific embodiments of the present invention will be described in further detail below.

[0047] Depend on Figures 1 to 9 As shown, in order to enable multi-leaf expansion during surgery and expand the intraoperative field of vision of medical staff, the present invention includes a handheld frame 1. A first rotating frame 2 is integrally formed and fixedly connected to the upper side of the handheld frame 1. A second rotating frame 3 is rotatably connected to the upper side of the first rotating frame 2. A limiting mechanism for limiting the angle of the second rotating frame 3 is provided between the first rotating frame 2 and the second rotating frame 3.

[0048] A lower arc frame 4 is detachably connected to the front side of the first rotating frame 2. A lower blade assembly that can move along the lower arc frame 4 is provided on the outer side of the lower arc frame 4.

[0049] The front side of the second rotating frame 3 is detachably connected to an upper arc frame 5, and an upper blade assembly that can move along the upper arc frame 5 is provided on the outer side of the upper arc frame 5.

[0050] The lower blade assembly includes a lower first blade 6 and a lower second blade 7; the upper blade assembly includes an upper first blade 8 and an upper second blade 9; the lower first blade 6, the lower second blade 7, the upper first blade 8 and the upper second blade 9 cooperate with each other to form a multi-leaf open structure;

[0051] In this embodiment, the device has multiple usage modes, specifically:

[0052] State 1, two-leaf configuration, that is, the upper first leaf 8 and the upper second leaf 9 are attached to each other to form the upper leaf of the traditional speculum, and the lower first leaf 6 and the lower second leaf 7 are attached to each other to form the lower leaf of the traditional speculum. In use, the upper arc frame 5 can be rotated directly by operating the second rotating frame 3, which in turn drives the upper first leaf 8 and the upper second leaf 9 to rotate upward together. By using the two leaves, the cervix can be opened and exposed. It is suitable for routine cervical examination and simple operation. The opening angle adjustment is simple and quick.

[0053] State 2, the separated state, i.e., a three-leaf or four-leaf configuration. When the upper first leaf 8 and the upper second leaf 9 slide apart to the left and right along the upper arc frame 5, it is a three-leaf configuration, which is suitable for scenarios where the upper vaginal wall needs to be exposed. Similarly, the lower leaf assembly can be separated while the upper leaf assembly remains closed, which is suitable for scenarios where the lower vaginal wall needs to be exposed. Based on the three-leaf configuration, when the lower first leaf 6 and the lower second leaf 7 slide apart to the left and right along the lower arc frame 4, it is a four-leaf configuration, which is suitable for complex surgical scenarios where vaginal wall laxity or prolapse is difficult to expose and requires full-range exposure.

[0054] The four blades can be independently adjusted in sliding position and unfolding angle to achieve the most precise and personalized exposure;

[0055] The above two states can be adjusted and used according to the patient's and the actual needs during the operation;

[0056] In addition, when the device is in the closed state, the upper and lower blade assemblies are closed in a conical shape, that is, the outer diameter of the end away from the handheld bracket 1 is smaller, which makes it easy to insert into the patient's body; when closed, the dimensions of the upper and lower blade assemblies are 7-8cm in length in the front-to-back direction and 1.5-2.5cm in width in the left-to-right direction.

[0057] Furthermore, it should be explained in detail that the right side of the upper arc frame 5 and the lower arc frame 4 are not directly connected, but have an opening at a certain angle, which can retain a certain angle of instrument-free vision during the operation, thereby facilitating greater exposure of the angle and facilitating the operation and suturing; by rotating the entire device, the exposure angle can be adjusted; in this embodiment, the angle is set to 90°.

[0058] In addition, to facilitate the insertion of the speculum into the patient's body, the outer sides of the upper and lower blade assemblies are coated with a lubricating coating made of medical polyelectrolyte material, such as PDA / P (DMA-co-MPC) polyelectrolyte material, which can achieve good lubrication effect.

[0059] Furthermore, by Figures 1 to 9 As shown, in order to facilitate the operation of medical staff, the upper arc frame 5 includes an upper disassembly plate 11. An upper suction sleeve 12 is fixedly connected to the rear part of the upper side of the upper disassembly plate 11, and an upper arc rod 13 is fixedly connected to the front part of the upper part of the upper disassembly plate 11. The upper suction sleeve 12 and the upper arc rod 13 are fixedly connected to each other at the end away from the upper disassembly plate 11.

[0060] The lower arc frame 4 includes a lower disassembly plate 15. A lower suction sleeve 14 is fixedly connected to the rear part of the lower side of the lower disassembly plate 15. A lower arc rod 16 is fixedly connected to the front part of the lower part of the lower disassembly plate 15. The lower suction sleeve 14 and the lower arc rod 16 are fixedly connected to each other at the end away from the lower disassembly plate 15.

[0061] It should be noted that the upper suction sleeve 12 and the lower suction sleeve 14 are hollow structures, with pipes for negative pressure suction installed inside. By setting the coaxial upper arc rod 13 and the upper suction sleeve 12, the upper blade assembly can be limited by two arc-shaped fixing structures, allowing it to rotate along the common central axis of the upper arc rod 13 and the upper suction sleeve 12. The lower suction sleeve 14 and the lower arc rod 16 are similarly able to rotate along the common central axis of the lower arc rod 16 and the lower suction sleeve 14.

[0062] Furthermore, by Figures 1 to 9 As shown, in order to reduce the cost of using the device and ensure its safety, after one use, the lower arc frame 4 can be removed from the front of the first rotating frame 2 and the upper arc frame 5 can be removed from the front of the second rotating frame 3 for replacement. This allows the handheld frame 1, the first rotating frame 2 and the second rotating frame 3 to be reused multiple times after disinfection, and the upper and lower blade components that directly enter the patient's body can be replaced.

[0063] Specifically, the rear end of the lower arc frame 4 is integrally formed and fixedly connected to a first limiting rod 17, and the front end of the first rotating frame 2 is provided with a first limiting groove 18 that is adapted to the first limiting rod 17; the rear end of the upper arc frame 5 is fixedly connected to a second limiting rod 19, and the front side of the second rotating frame 3 is provided with a second limiting groove 20 that is adapted to the second limiting rod 19.

[0064] It should be noted that the inner diameter of the first limiting groove 18 is smaller than the inner diameter of the second limiting groove 20, and the outer diameter of the first limiting rod 17 is also smaller than the outer diameter of the second limiting groove 20. During the process of assembling the upper arc frame 5, the lower arc frame 4 with the first rotating frame 2 and the second rotating frame 3, the first limiting rod 17 and the second limiting rod 19 can be inserted into the second limiting groove 20 and the first limiting groove 18 from top to bottom. The thinner first limiting rod 17 will then pass through the second limiting groove 20 and engage with the first limiting groove 18, while the second limiting rod 19 will directly engage with the second limiting groove 20. In addition, since the first limiting rod 17 and the second limiting rod 19 are both arc-shaped, and their centers are on the same axis as the upper arc rod 13 and the lower arc rod 16, when the first limiting rod 17 engages with the first limiting groove 18, the two will not rotate horizontally, and the second limiting rod 19 will not rotate horizontally relative to the second limiting groove 20.

[0065] Furthermore, by Figures 1 to 9 As shown, in order to facilitate the adjustment of the opening angle of the speculum, a first circular piece 21 is integrally formed and fixedly connected to the upper side of the first rotating frame 2. A second circular piece 22 is provided on each of the left and right sides of the first circular piece 21. The upper side of each second circular piece 22 is integrally formed and fixedly connected to the lower side of the second rotating frame 3. A rotating column 23 is integrally formed and fixedly connected to the middle of the first circular piece 21. A circular hole is opened in the middle of each second circular piece 22. Each second circular piece 22 is rotatably connected to the rotating column 23 through the circular hole.

[0066] Furthermore, by Figures 1 to 9 As shown, in order to facilitate the adjustment of the opening angle, the limiting mechanism includes multiple mutually cooperating limiting slots 24 and limiting blocks 25. A limiting plate 26 that can move left and right is provided on the left side of the first rotating frame 2. Each limiting block 25 is integrally formed and fixedly connected to the right side of the limiting plate 26. A limiting protrusion 27 is integrally formed and fixedly connected to the left side of the second circular piece 22 that is fixedly connected to the second rotating frame 3. Each limiting slot 24 is opened on the left end face of the limiting protrusion 27. The limiting slots 24 and the limiting blocks 25 cooperate with each other to form a structure that limits the angle of the second rotating frame 3 relative to the first rotating frame 2.

[0067] In the above structure, when the second circular piece 22 rotates relative to the first circular piece 21, it means that the second rotating frame 3 rotates relative to the first rotating frame 2, which is the opening action of the peephole. By setting a limiting mechanism, the rotation action of the second circular piece 22 relative to the first circular piece 21 can be limited. Specifically, when the limiting block 25 and the limiting slot 24 cooperate with each other, the second circular piece 22 cannot rotate relative to the first circular piece 21, thus keeping the opening angle of the peephole fixed. When the angle needs to be adjusted, the limiting plate 26 is moved to the left, thereby disengaging the limiting block 25 from the limiting slot 24.

[0068] Furthermore, by Figures 1 to 9 As shown, in order to facilitate use by medical staff, a square rod 28 is integrally formed and fixedly connected to the middle of the right side of the limiting plate 26. The square rod 28 is slidably connected to the second rotating frame 3. An operating rod 29 is integrally formed and fixedly connected to the right end of the square rod 28. A first tension spring 30 is fitted on the outside of the operating rod 29. The first tension spring 30 applies a rightward pulling force to the square rod 28.

[0069] In use, by setting the square rod 28, the movement direction of the limiting plate 26 relative to the first circular piece 21 can be limited, so that it can only move left and right relative to the first circular piece 21, but cannot rotate relative to it. By setting the first tension spring 30, one end of the tension spring is connected to the square rod 28, and the other end is connected to the inner side wall of the placement groove opened inside the rotating column 23, which can provide tension to the square rod 28, thereby making the limiting plate 26 always have a tendency to move to the right, thus ensuring the cooperation between the limiting block 25 and the limiting groove 24.

[0070] When the angle of the sight glass needs to be adjusted, the operating lever 29 can be pressed directly from right to left. At this time, the operating lever 29 will drive the square lever 28 and the limiting plate 26 to move to the left, so that the limiting block 25 disengages from the limiting groove. After releasing the operating lever 29, under the action of the tension spring, the square lever 28 and the limiting plate 26 can be reset, so that the limiting block 25 and the limiting groove 24 can be engaged again.

[0071] In addition, the rear end of the second rotating frame 3 is integrally formed and fixedly connected with an operating handle, which can easily adjust the angle of the second rotating frame 3, thereby realizing the opening action of the peephole.

[0072] Furthermore, by Figures 1 to 9As shown, during the operation, it is inconvenient to press the operating lever 29 and adjust the angle of the speculum opening with the same hand while holding the handpiece 1. Therefore, in order to achieve the operation of opening angle adjustment with one hand, two first tilting blocks 31 are fixedly connected to the right end of the square rod 28. Each first tilting block 31 has a second tilting block 32 that can move up and down on its right side. A second tension spring 33 is fixedly connected to the upper end of each second tilting block 32. The second tension spring 33 applies an upward pulling force to the corresponding second tilting block 32. A U-shaped frame 34 is fixedly connected to the lower end of the two second tilting blocks 32. The U-shaped frame 34 drives the two second tilting blocks 32 to move downward, which can push the two first tilting blocks 31 to move to the left.

[0073] Furthermore, by Figures 1 to 9 As shown, in order to facilitate operation by medical staff, a pull rope 35 is provided inside the handheld frame 1. The lower end of the pull rope 35 is fixedly connected to the handheld frame 1, and the upper end of the pull rope 35 is fixedly connected to the lower end of the U-shaped frame 34 through a slot. An operation button 36 that can move back and forth is provided in the middle of the handheld frame 1. A through groove 37 is opened in the middle of the operation button 36, and the middle part of the pull rope 35 passes through the through groove 37. Moving the operation button 36 back and forth can cause the upper end of the pull rope 35 to drive the U-shaped frame 34 to move downward.

[0074] It should be noted that when the U-shaped frame 34 moves downward, it will cause the two second inclined blocks 32 to move downward. Then, with the cooperation of the second inclined blocks 32 and the first inclined block 31, the first inclined block 31 and the square rod 28 will move to the left, thereby disengaging the limiting groove from the limiting block 25. After that, the U-shaped frame 34 will be reset under the action of the second tension spring 33. The downward movement of the U-shaped frame 34 can be achieved by pressing the operation button 36 forward or backward. Specifically, when the operation button 36 is pressed forward or backward, the middle part of the pull rope 35 will move forward or backward through the groove 37. Since the pull rope 35 is not elastic, the upper end of the pull rope 35 will move downward, thereby causing the U-shaped frame 34 to move downward.

[0075] Furthermore, by Figures 1 to 9 As shown, in order to further reduce the loss of intraoperative field of vision, suction holes 10 for negative pressure suction are provided on the lower first leaf 6, the lower second leaf 7, the upper first leaf 8 and the upper second leaf 9; the diameter of the suction holes is 1-3mm and the spacing between the holes is 5-15mm.

[0076] In use, the suction hole 10 can be used to draw out smoke and blood nearby during the operation, thereby maintaining the clarity of the surgical field. The suction hole 10 can be opened at least one of the outer, inner or sidewall of the lower first leaf 6, the lower second leaf 7, the upper first leaf 8 and the upper second leaf 9. The corresponding upper leaf assembly and lower leaf assembly can be used according to different surgical situations. In the embodiment, the suction hole 10 is opened on the outer wall.

[0077] Specifically, a first suction tube 38 is fixedly connected inside the lower first blade 6, the lower second blade 7, the upper first blade 8, and the upper second blade 9. The first suction tube 38 is a rigid hollow pipe. Each suction hole 10 communicates with the interior of the corresponding first suction tube 38. An upper suction tube 39 is fixedly connected inside the upper suction sleeve 12, and a lower suction tube 40 is fixedly connected inside the lower suction sleeve 14. The upper suction tube 39 and the lower suction tube 40 are also rigid hollow pipes. The upper end of the upper suction tube 39 and the lower end of the lower suction tube 40 are respectively connected to two corrugated suction tubes 41. Each first suction tube 38 communicates with the corresponding corrugated suction tube 41. The corrugated suction tube 41 can be extended and retracted to adapt to the movement of the upper and lower blade assemblies. The front of the upper suction tube 39 and the lower suction tube 40 is provided with an arc-shaped hole for the first suction tube 38 to pass through.

[0078] Furthermore, by Figures 1 to 9 As shown, a support frame 42 is integrally formed and fixedly connected to the left end of the first rotating frame 2. A connecting sleeve 43 is detachably connected to the support frame 42. A suction connector 49 is connected to the lower side of the connecting sleeve 43. A first suction port 44 is connected to the front side of the connecting sleeve 43 and communicates with the lower suction tube 40. A connecting groove 45 is opened on the outer side of the right part of the connecting sleeve 43. A waist-shaped hole 46 is opened inside the connecting groove 45. A rotating ring 47 is rotatably connected to the outer side of the connecting groove 45. The rotating ring 47 is coaxial with the rotation axis of the rotating column 23. A second suction port 48 is fixedly connected to the outer side of the rotating ring 47 and communicates with the upper suction tube 39. The second suction port 48 communicates with the waist-shaped hole 46.

[0079] It should be noted that the support frame 42 is used to support the connecting sleeve 43. The support frame 42 is also provided with a through hole for the suction connection port 49 to pass through, so that the suction connection port 49 can be connected to the negative pressure suction device, thereby creating negative pressure inside the connecting sleeve 43. The first suction port 44 creates negative pressure inside the lower suction tube 40, and the second suction port 48 creates negative pressure inside the upper suction tube 39. The suction connection port 49 can be connected to standard suction connection tubes of φ6mm and φ8mm, and can be directly connected to the negative pressure suction device tubing commonly used in operating rooms.

[0080] Furthermore, once the lower suction tube 40 and the upper suction tube 39 are both under negative pressure, they can be suctioned under negative pressure through the corresponding corrugated suction tube 41 and the first suction tube 38 through the suction hole 10 in sequence, so that the liquid and smoke in the surgical field can be removed in time.

[0081] In addition, in order to facilitate the adjustment and fixation of the positions of the upper blade assembly and the lower blade assembly, threaded sleeves are provided on the lower first blade 6, the lower second blade 7, the upper first blade 8 and the upper second blade 9. Each threaded sleeve has an operating knob threaded inside. Rotating the operating knob can fix the lower first blade 6, the lower second blade 7, the upper first blade 8 and the upper second blade 9 relative to the corresponding upper suction sleeve 12 or lower suction sleeve 14 by tightening the threads.

[0082] In addition, a connecting plate is bolted to the upper right end of the handheld frame 1, and the lower end of the front part of the connecting plate is bolted to the lower suction sleeve 14 and the lower arc rod 16.

[0083] This invention features a novel structure, ingenious design, and simple and convenient operation. Through this design, multi-leaf expansion can be performed during surgery, expanding the intraoperative field of vision for medical staff, facilitating their operation, reducing the cost of using the device, ensuring the safety of the device, and making it easier to adjust the expansion angle of the speculum. It also adds the function of adjusting the expansion angle with one hand.

[0084] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-leaf adjustable speculum, including a handheld holder, characterized in that: A first rotating frame is fixedly connected to the upper side of the handheld frame, and a second rotating frame is rotatably connected to the upper side of the first rotating frame. A limiting mechanism for limiting the angle of the second rotating frame is provided between the first rotating frame and the second rotating frame. The front side of the first rotating frame is detachably connected to a lower arc frame, and the outer side of the lower arc frame is provided with a lower blade assembly that can move along the lower arc frame. The front side of the second rotating frame is detachably connected to an upper arc frame, and the outer side of the upper arc frame is provided with an upper blade assembly that can move along the upper arc frame. The lower blade assembly includes a lower first blade and a lower second blade; the upper blade assembly includes an upper first blade and an upper second blade; the lower first blade, the lower second blade, the upper first blade, and the upper second blade cooperate with each other to form a multi-leaf open structure; The lower first blade, the lower second blade, the upper first blade, and the upper second blade are all provided with suction holes for negative pressure suction.

2. The multi-leaf adjustable speculum according to claim 1, characterized in that: The upper arc frame includes an upper disassembly plate, an upper suction sleeve is fixedly connected to the rear part of the upper side of the upper disassembly plate, an upper arc rod is fixedly connected to the front side of the upper side of the upper disassembly plate, and the upper suction sleeve and the end of the upper arc rod away from the upper disassembly plate are fixedly connected to each other. The lower arc frame includes a lower disassembly plate. A lower suction sleeve is fixedly connected to the rear part of the lower side of the lower disassembly plate. A lower arc-shaped rod is fixedly connected to the front part of the lower part of the lower disassembly plate. The lower suction sleeve and the end of the lower arc-shaped rod away from the lower disassembly plate are fixedly connected to each other.

3. The multi-leaf adjustable speculum according to claim 1, characterized in that: The rear end of the lower arc frame is fixedly connected to a first limiting rod, and the front end of the first rotating frame is provided with a first limiting groove that matches the first limiting rod; the rear end of the upper arc frame is fixedly connected to a second limiting rod, and the front side of the second rotating frame is provided with a second limiting groove that matches the second limiting rod.

4. The multi-leaf adjustable speculum according to claim 1, characterized in that: A first circular plate is fixedly connected to the upper side of the first rotating frame. A second circular plate is provided on each of the left and right sides of the first circular plate. The upper side of each second circular plate is fixedly connected to the lower side of the second rotating frame. A rotating column is fixedly connected to the middle of the first circular plate. Each second circular plate is rotatably connected to the rotating column.

5. The multi-leaf adjustable speculum according to claim 1, characterized in that: The limiting mechanism includes multiple cooperating limiting slots and limiting blocks. The left side of the first rotating frame is provided with a limiting plate that can move left and right. Each limiting block is fixedly connected to the right side of the limiting plate. The left side of the second rotating frame is fixedly connected to a limiting protrusion. Each limiting slot is opened on the left end face of the limiting protrusion. The limiting slots and limiting blocks cooperate with each other to form a structure that limits the angle of the second rotating frame relative to the first rotating frame.

6. A multi-leaf adjustable speculum according to claim 5, characterized in that: A square rod is fixedly connected to the middle of the right side of the limiting plate. The square rod is slidably connected to the second rotating frame. An operating rod is fixedly connected to the right end of the square rod. A first tension spring is fitted on the outside of the operating rod. The first tension spring applies a rightward pulling force to the square rod.

7. A multi-leaf adjustable speculum according to claim 6, characterized in that: Two first tilting blocks are fixedly connected to the right end of the square rod. Each first tilting block has a second tilting block that can move up and down on its right side. A second tension spring is fixedly connected to the upper end of each second tilting block. The second tension spring applies an upward pulling force to the corresponding second tilting block. A U-shaped frame is fixedly connected to the lower ends of the two second tilting blocks. The U-shaped frame drives the two second tilting blocks to move downward, which can push the two first tilting blocks to move to the left.

8. A multi-leaf adjustable speculum according to claim 7, characterized in that: The handheld frame has a pull rope inside, with the lower end of the pull rope fixedly connected to the handheld frame and the upper end of the pull rope fixedly connected to the lower end of the U-shaped frame. The handheld frame has an operating button that can move back and forth in the middle, and a through groove is opened in the middle of the operating button. The middle part of the pull rope passes through the through groove. Moving the operating button back and forth can cause the upper end of the pull rope to drive the U-shaped frame to move downward.

9. A multi-leaf adjustable speculum according to claim 1, characterized in that: The lower first blade, the lower second blade, the upper first blade, and the upper second blade are all fixedly connected to a first suction tube. Each suction hole is connected to the interior of the corresponding first suction tube. The upper suction sleeve is fixedly connected to an upper suction tube, and the lower suction sleeve is fixedly connected to a lower suction tube. The upper end of the upper suction tube and the lower end of the lower suction tube are respectively connected to two corrugated suction tubes. Each first suction tube is connected to the corresponding corrugated suction tube.

10. A multi-leaf adjustable speculum according to claim 9, characterized in that: A support frame is fixedly connected to the left end of the first rotating frame. A connecting sleeve is detachably connected to the support frame. A suction device connection port is connected to the lower side of the connecting sleeve. A first suction port connected to the lower suction tube is connected to the front side of the connecting sleeve. A connecting groove is opened on the outer side of the right part of the connecting sleeve. An oblong hole is opened inside the connecting groove. A rotating ring is rotatably connected to the outer side of the connecting groove. A second suction port connected to the upper suction tube is fixedly connected to the outer side of the rotating ring. The second suction port is connected to the oblong hole.

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