Medical operating forceps with adjustable locking state
By designing a clamp and an adjustment mechanism in minimally invasive surgical forceps, the locking state can be adjusted, solving the problem of the existing surgical forceps having non-adjustable force, improving the safety of the operation and the suturing effect, and reducing the trauma to the patient's tissue.
Patent Information
- Application Number
- CN202511030167.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-25
- Publication Date
- 2025-09-09
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The locking state of the surgical forceps used in existing minimally invasive surgeries cannot be adjusted, resulting in excessive force easily causing secondary damage to the tissue, while too little force cannot effectively clamp and fix the tissue, affecting the suturing effect.
A medical surgical forceps with adjustable locking state is designed. By installing a chuck on a support rod, the opening and closing of the jaws are controlled by a wire rope and roller mechanism, and the clamping force is precisely adjusted by an adjustment mechanism. The clamping force is precisely adjusted by the cooperation of components such as a pressing plate, a connecting rod, a gear, and a ratchet.
It achieves precise clamping of different tissues during minimally invasive surgery, reduces trauma to patient tissues, improves surgical safety and suturing effects, and promotes rapid recovery of patients.
Smart Images
Figure CN120605075A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of medical devices, and in particular relates to a medical surgical forceps with adjustable locking state. Background Art
[0002] Medical surgical forceps are commonly used medical devices in surgery, mainly used for clamping, fixing, and pulling tissues or instruments. Surgical forceps can be divided into vascular forceps, tissue forceps, needle holding forceps, etc. Now with the update of technology, some surgeries can choose minimally invasive surgery that causes less damage to patients. Minimally invasive surgery is performed through small incisions or natural cavities. Traditional surgical forceps cannot enter the patient's body, so special instruments such as the da Vinci surgical system have appeared. During the minimally invasive process, special surgical forceps are also needed to stop bleeding from the patient's wound, assist in suturing and clamping tissues.
[0003] However, the locking state of the surgical forceps used in existing minimally invasive surgeries cannot be adjusted, and the appropriate clamping force cannot be achieved for different tissues. Excessive force can easily cause secondary damage to the tissue, while too little force will result in the inability to clamp and fix the tissue during the suturing process, affecting the suturing effect. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a medical surgical forceps with adjustable locking state.
[0005] The technical solution adopted to solve the above technical problems is: a medical surgical forceps with adjustable locking state, comprising a housing, an adjustment mechanism provided in the housing, a handle fixedly connected to the upper surface of the housing, a support rod fixedly connected to the end of the handle away from the housing, and a chuck fixedly connected to the end of the support rod away from the handle; The chuck includes a mounting plate fixedly connected to the support rod, a pair of second fixed shafts fixedly connected in the mounting plate, a second roller and a third roller respectively passing through the second fixed shafts and rotatably connected thereto, a second steel wire rope fixedly connected to the second roller, and a first steel wire rope fixedly connected to the third roller.
[0006] Through the above technical solution, by installing a chuck on the support rod, controlling the first steel wire rope and the second steel wire rope through the pressing plate and the adjustment mechanism, the first steel wire rope and the second steel wire rope are used to drive the first roller and the second roller to rotate, thereby driving the first jaw and the second jaw to open and close, so that the chuck can enter the patient's body through a minimally invasive incision, and the doctor's hands are used to operate outside the patient's body, which greatly reduces the trauma to the patient's tissue during the operation and is conducive to the patient's rapid recovery after surgery.
[0007] Furthermore, a first clamp is fixedly connected to the second roller, a second clamp is fixedly connected to the third roller, a second torsion spring is fixedly connected to one side of the second roller, a third torsion spring is fixedly connected to one side of the third roller, the third torsion spring and the second torsion spring are both fixedly connected to the mounting plate, a first limiting rod is fixedly connected inside the mounting plate, and the inner sides of the first clamp and the second clamp are both provided with a first groove corresponding to the first limiting rod.
[0008] Through the above technical solution, the second torsion spring and the third torsion spring provide clamping force for the first clamping jaw and the second clamping jaw, and the cooperation between the first limiting rod and the first groove can prevent the first clamping jaw and the second clamping jaw from rotating too far.
[0009] Furthermore, the handle includes a shell fixedly connected to the outer shell, a first fixed shaft is fixedly connected inside the shell, a first roller is rotatably connected to the first fixed shaft, a first steel wire rope is fixedly connected to the first roller, both ends of the first roller are fixedly connected to a first gear, a first torsion spring is fixedly connected to one side of the first gear, a first baffle is fixedly connected to the end of the first torsion spring away from the first gear, and the first baffle is fixedly connected to the first fixed shaft.
[0010] Through the above technical solution, the first torsion spring drives the first roller to reset, and the first roller drives the first steel wire rope to move, thereby controlling the opening and closing of the second clamping jaw.
[0011] Furthermore, a connecting block is slidingly connected through the shell, and a pair of first racks are fixedly connected to the end of the connecting block close to the first roller, and the first racks and the first gear are engaged with each other. The end of the connecting block away from the first rack is fixedly connected to a connecting rod, and the end of the connecting rod away from the connecting block is fixedly connected to a pressing plate.
[0012] Through the above technical solution, the pressing plate drives the first connecting rod to move, the first connecting rod drives the first rack to move, and the first rack drives the first roller to rotate through the first gear, so that the first steel wire rope is wrapped around the first roller, so that the first steel wire rope drives the third roller to rotate, and the third roller drives the second jaw to open outward. When the pressing plate is released, the third torsion spring drives the third roller to rotate in the opposite direction, so that the second jaw is closed, and the first jaw always rotates inward under the action of the second torsion spring and is blocked by the first limit rod. The torque provided by the second torsion spring and the third torsion spring provides clamping force for the first jaw and the second jaw, so that the doctor can control the opening and closing of the second jaw by controlling the pressing plate, thereby facilitating the clamping of the patient's tissue.
[0013] Furthermore, the adjustment mechanism includes a fixed plate fixedly connected to the outer shell, a rotating shaft passing through the fixed plate and rotatably connected, one end of the rotating shaft is fixedly connected to a first ratchet, an end of the first ratchet away from the rotating shaft is fixedly connected to a fourth roller, a second steel wire rope is fixedly connected to the fourth roller, and an end of the rotating shaft away from the first ratchet passes through and rotatably connected to a second gear.
[0014] Through the above technical solution, the second gear drives the rotating shaft to rotate, the rotating shaft drives the first ratchet to rotate, and the first ratchet drives the fourth roller to rotate, thereby providing tension for the second steel wire rope.
[0015] Furthermore, a third baffle is fixedly connected inside the shell, a second spring is fixedly connected to the third baffle, an end of the second spring away from the third baffle is fixedly connected to a second rack, an end of the second rack away from the second spring is fixedly connected to a second adjusting rod, a limiting block is fixedly connected inside the shell, an end of the second adjusting rod away from the second rack is rotatably connected to a sliding rod, a pressing rod is slidably connected to the outside of the sliding rod, and the pressing rod is rotatably connected to the shell.
[0016] Through the above technical solution, the sliding rod on the pressing rod drives the second adjusting rod to move, the second adjusting rod drives the second rack to move, the second rack drives the second gear to rotate, and the second ratchet in the second gear drives the rotating shaft to rotate through the wedge block.
[0017] Furthermore, a plurality of second ratchets are fixedly connected in the second gear, a plurality of second grooves are provided on the rotating shaft, a wedge block is rotatably connected in the second groove, a third spring is fixedly connected between the wedge block and the second groove, a plurality of through holes are provided on the first ratchet, and a fourth torsion spring is fixedly connected to the first ratchet once it is away from the fourth roller, and the fourth torsion spring is fixedly connected to the fixed plate.
[0018] Through the above technical solution, when the pressing rod is released, the second spring pushes the second rack to reset. At this time, the second gear rotates in the opposite direction, and the second ratchet will push away the wedge block, so as not to drive the rotating shaft. Then the second rack is disengaged from the meshing state with the second gear, thereby preventing the first ratchet from rotating in the opposite direction to drive the second gear to rotate, and the second gear and the second rack are stuck with each other.
[0019] Furthermore, the fixed plate is rotatably connected to a rocker arm, one end of the rocker arm is fixedly connected to a first hook claw, a strip hole is provided at one end of the rocker arm close to the first hook claw, a slider is slidably connected in the strip hole, and a push rod is fixedly connected to the slider, and an end of the push rod away from the slider is fixedly connected to the first adjusting rod, and an end of the first adjusting rod away from the push rod is fixedly connected to the push plate, and a first spring is provided on the outer sleeve of the first adjusting rod, one end of the first spring is fixedly connected to the push plate, and an end of the first spring away from the push plate is fixedly connected to the outer shell.
[0020] With the above technical solution, by arranging the first hook and the second hook on the swing arm, the first ratchet can be rotated intermittently, thereby accurately controlling the tension of the second steel wire rope.
[0021] Furthermore, the end of the rocker arm away from the first hook is rotatably connected to the second hook, the end of the rocker arm close to the second hook is fixedly connected to the second baffle, the second baffle is fixedly connected to a tension spring, the end of the tension spring away from the second baffle is fixedly connected to the second hook, the end of the rocker arm close to the second hook is fixedly connected to the second limiting rod, and the first adjusting rod passes through the sliding connection shell.
[0022] Through the above technical solution, the push plate is pushed, and the push plate pushes the push rod through the first adjusting rod, and the push rod drives the rocking rod to rotate through the cooperation of the slider and the strip hole. At this time, the second hook releases the blocking of the first ratchet, and the first ratchet rotates a small angle under the push of the fourth torsion spring, and the first hook on the rocking rod clamps the first ratchet. After releasing the push plate, the first spring pushes the push plate to reset, thereby resetting the rocking rod, and the first hook releases the blocking of the first ratchet. The first ratchet rotates a certain angle under the drive of the fourth torsion spring and is clamped by the second hook, thereby causing the fourth roller to release the second steel wire rope, thereby reducing the tension of the second steel wire rope.
[0023] The beneficial effects of the present invention are as follows: (1) The present invention installs a chuck on the support rod, controls the first steel wire rope and the second steel wire rope through the pressing plate and the adjusting mechanism, and drives the first roller and the second roller to rotate through the first steel wire rope and the second steel wire rope, thereby driving the first clamping jaw and the second clamping jaw to open and close, so that the chuck can enter the patient's body through a minimally invasive incision, and the doctor's hand is manipulated outside the patient's body, which greatly reduces the trauma to the patient's tissue during the operation and is conducive to the patient's rapid recovery after surgery; (2) The present invention drives the first connecting rod to move through the pressing plate, and the first connecting rod drives the first rack to move, and the first rack drives the first roller to rotate through the first gear, thereby winding the first steel wire rope around the first roller, so that the first steel wire rope drives the third roller to rotate, and the third roller drives the second clamping jaw to open outward, and when the pressing plate is released, the third torsion spring drives the third roller to rotate in the opposite direction, so that the second clamping jaw is closed, and the first clamping jaw always rotates inward under the action of the second torsion spring and is limited by the first limit. The rod blocks, and the torsion provided by the second torsion spring and the third torsion spring provides a clamping force for the first clamp and the second clamp, so that the doctor can control the opening and closing of the second clamp by controlling the pressing plate, thereby facilitating the clamping of the patient's tissue; (3) The present invention uses an adjustment mechanism to accurately control the rotation direction of the fourth roller through the push plate and the pressing rod, so that the fourth roller drives the second steel wire rope, and the second steel wire rope drives the second roller to rotate, and the tension of the second steel wire rope is used to counteract the torsion of the second torsion spring, thereby changing the size of the clamping force between the first clamp and the second clamp. By pushing the pressing rod, the fourth roller can be driven to rotate, so that the tension of the second steel wire rope on the second roller is increased, thereby counteracting the torsion provided by the second torsion spring. By pushing the push plate, the second steel wire rope can be relaxed, reducing the force applied to the second torsion spring, and increasing the clamping force, so that the clamping force of the surgical forceps in the locked state can be adjusted, and different clamping forces are used for different tissues to avoid secondary damage to the patient. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is the overall structural diagram of the present invention; Figure 2 It is a diagram of the internal structure of the support rod of the present invention; Figure 3 This is a three-dimensional structural diagram of the chuck mechanism of the present invention; Figure 4 This is an exploded structural diagram of the chuck mechanism of the present invention; Figure 5 It is a cross-sectional structural diagram of the chuck mechanism of the present invention; Figure 6 It is a structural diagram of the regulating mechanism of the present invention; Figure 7 This is a diagram of the internal structure of the handle of the present invention; Figure 8 It is a diagram of the internal structure of the regulating mechanism of the present invention; Figure 9 yes Figure 8 A magnified view of point A; Figure 10 It is a three-dimensional structural diagram of the adjustment mechanism of the present invention; Figure 11 This is an exploded structural diagram of the regulating mechanism of the present invention; Figure 12 This is a structural diagram of the first adjusting rod of the present invention; Figure 13 is a cross-sectional view of the rotation axis of the present invention; Figure 14 yes Figure 13 Enlarged view of point B.
[0025] 1. Outer shell; 2. Handle; 21. Shell; 22. First fixed shaft; 23. First roller; 24. First gear; 25. First baffle; 26. First torsion spring; 27. Connecting block; 28. Connecting rod; 29. Pressing plate; 210. First rack; 3. Support rod; 4. Clamp; 41. Mounting plate; 42. Second fixed shaft; 43. Second roller; 44. First clamping jaw; 45. Second torsion spring; 46. Third roller; 47. Second clamping jaw; 48. Third torsion spring; 49. First groove; 410. First limiting rod; 5. First steel wire rope; 6. Second steel wire rope; 7. Adjusting mechanism; 71. Fixing plate; 72. Rotating shaft; 73. First A ratchet; 74, a fourth roller; 75, a second gear; 76, a rocker; 77, a bar-shaped hole; 78, a first hook; 79, a second hook; 710, a second baffle; 711, a tension spring; 712, a second limiting rod; 713, a push rod; 714, a slider; 715, a first adjusting rod; 716, a push plate; 717, a first spring; 718, a third baffle; 719, a second spring; 720, a second rack; 721, a limiting block; 722, a second adjusting rod; 723, a pressing rod; 724, a fourth torsion spring; 725, a second ratchet; 726, a through hole; 727, a second groove; 728, a third spring; 729, a wedge block; 730, a slide. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0027] like Figures 1-14 As shown, a medical surgical forceps with adjustable locking state in this embodiment includes a shell 1, and a handle 2 is fixedly connected to a support rod 3 at one end away from the shell 1. The doctor holds the handle 2 and inserts the chuck 4 and the support rod 3 into the patient's body through a minimally invasive incision.
[0028] like Figure 3-Figure 5 As shown, the end of the support rod 3 away from the handle 2 is fixedly connected to the chuck 4, and the chuck 4 includes a mounting plate 41 fixedly connected to the support rod 3. A pair of second fixed shafts 42 are fixedly connected in the mounting plate 41, and the second fixed shafts 42 are respectively passed through and rotatably connected with the second roller 43 and the third roller 46. The second roller 43 is fixedly connected to the second steel wire rope 6, and the third roller 46 is fixedly connected to the first steel wire rope 5. The rotation of the second roller 43 and the third roller 46 is controlled by the second steel wire rope 6 and the first steel wire rope 5.
[0029] The second roller 43 is fixedly connected to the first clamping jaw 44, the third roller 46 is fixedly connected to the second clamping jaw 47, one side of the second roller 43 is fixedly connected to the second torsion spring 45, one side of the third roller 46 is fixedly connected to the third torsion spring 48, the third torsion spring 48 and the second torsion spring 45 are both fixedly connected to the mounting plate 41, and the first limiting rod 410 is fixedly connected inside the mounting plate 41, the inner sides of the first clamping jaw 44 and the second clamping jaw 47 are provided with a first groove 49 corresponding to the first limiting rod 410, and the second torsion spring 45 and the third torsion spring 48 provide clamping force for the first clamping jaw 44 and the second clamping jaw 47.
[0030] like Figures 8-14 As shown, an adjusting mechanism 7 is provided in the housing 1, and the adjusting mechanism 7 includes a fixed plate 71 fixedly connected to the housing 1, and a rotating shaft 72 is rotatably connected to the fixed plate 71, one end of the rotating shaft 72 is fixedly connected to a first ratchet 73, and the end of the first ratchet 73 away from the rotating shaft 72 is fixedly connected to a fourth roller 74, and the fourth roller 74 is fixedly connected to the second steel wire rope 6, and the end of the rotating shaft 72 away from the first ratchet 73 is rotatably connected to the second gear 75, and the second ratchet 725 in the second gear 75 drives the rotating shaft 72 to rotate through the wedge block 729, and the rotating shaft 72 drives the first ratchet 73 to push the second hook 79 to rotate, so that the first ratchet 73 drives the fourth roller 74 to rotate, and the fourth roller 74 reels the second steel wire rope 6.
[0031] The outer shell 1 is fixedly connected to a third baffle 718, and the third baffle 718 is fixedly connected to a second spring 719. The end of the second spring 719 away from the third baffle 718 is fixedly connected to a second rack 720, and the end of the second rack 720 away from the second spring 719 is fixedly connected to a second adjusting rod 722. A limited block 721 is fixedly connected to the outer shell 1, and the end of the second adjusting rod 722 away from the second rack 720 is rotatably connected to the sliding rod 730. The sliding rod 730 is slidably connected to the pressing rod 723, and the pressing rod 723 is fixed to the outer shell. 1 is rotated to push the pressing rod 723. The sliding rod 730 on the pressing rod 723 drives the second adjusting rod 722 to move. The second adjusting rod 722 drives the second rack 720 to move. The second rack 720 drives the second gear 75 to rotate. When the pressing rod 723 is released, the second spring 719 pushes the second rack 720 to return to its original position. Then, the second rack 720 is disengaged from the meshing state with the second gear 75, thereby preventing the first ratchet 73 from rotating in the opposite direction to drive the second gear 75 to rotate, and the second gear 75 and the second rack 720 are stuck with each other.
[0032] A plurality of second ratchets 725 are fixedly connected to the second gear 75, a plurality of second grooves 727 are provided on the rotating shaft 72, a wedge block 729 is rotatably connected to the second groove 727, a third spring 728 is fixedly connected between the wedge block 729 and the second groove 727, a plurality of through holes 726 are provided on the first ratchet 73, and once the first ratchet 73 is away from the fourth roller 74, a fourth torsion spring 724 is fixedly connected to the fixed plate 71, the second gear 75 rotates in the opposite direction, and the second ratchet 725 will push away the wedge block 729, thereby not driving the rotating shaft 72.
[0033] The fixing plate 71 is rotatably connected to a rocker arm 76, one end of the rocker arm 76 is fixedly connected to a first hook 78, and a strip hole 77 is provided at one end of the rocker arm 76 close to the first hook 78, and a slider 714 is slidably connected in the strip hole 77, and a push rod 713 is fixedly connected to the slider 714, and the end of the push rod 713 away from the slider 714 is fixedly connected to the first adjusting rod 715, and the end of the first adjusting rod 715 away from the push rod 713 is fixedly connected to the push plate 716, and the outer sleeve of the first adjusting rod 715 is provided with a first spring 717, one end of the first spring 717 is fixedly connected to the push plate 716, and the end of the first spring 717 away from the push plate 716 is fixedly connected to the housing 1, pushing the push plate 716, and the push plate 716 passes through the first When the locking cam 73 is in the unlocked position, the locking cam 73 is in the unlocked position, and the first spring 717 is in the unlocked position, and the first hook 78 on the rocker arm 76 is locked. After the first ratchet 73 is unlocked, the first spring 717 pushes the push plate 716 to reset, thereby resetting the rocker arm 76. The first hook 78 releases the clamping position of the first ratchet 73, and the first ratchet 73 is rotated a certain angle driven by the fourth torsion spring 724 and is then locked by the second hook 79, thereby causing the fourth roller 74 to release the second steel wire rope 6, thereby reducing the tension of the second steel wire rope 6.
[0034] The end of the rocker arm 76 away from the first hook 78 is rotatably connected to the second hook 79, and the end of the rocker arm 76 close to the second hook 79 is fixedly connected to the second baffle 710, and the second baffle 710 is fixedly connected to a tension spring 711. The end of the tension spring 711 away from the second baffle 710 is fixedly connected to the second hook 79, and the end of the rocker arm 76 close to the second hook 79 is fixedly connected to the second limit rod 712. The first adjustment rod 715 passes through the sliding connection housing 1. When the first ratchet 73 rotates counterclockwise, the second hook 79 can be pushed away, and when the first ratchet 73 rotates clockwise, the tension spring 711 will pull the second hook 79, and the second hook 79 can clamp the first ratchet 73.
[0035] like Figure 6 and Figure 7As shown, the upper surface of the shell 1 is fixedly connected to the handle 2, and the handle 2 includes a shell 21 fixedly connected to the shell 1, and a first fixed shaft 22 is fixedly connected inside the shell 21, and a first roller 23 is rotatably connected to the first fixed shaft 22, and a first steel wire rope 5 is fixedly connected to the first roller 23, and both ends of the first roller 23 are fixedly connected to the first gear 24, and one side of the first gear 24 is fixedly connected to the first torsion spring 26, and the end of the first torsion spring 26 away from the first gear 24 is fixedly connected to the first baffle 25, and the first baffle 25 is fixedly connected to the first fixed shaft 22, and the first rack 210 drives the first gear 24 to rotate, and the first gear 24 drives the first roller 23 to rotate, and the first roller 23 reels the first steel wire rope 5, so that the first steel wire rope 5 drives the third roller 46 to rotate, and the third roller 46 drives the second clamping jaw 47 to open outward.
[0036] A connecting block 27 is slidably connected through the shell 21, and a pair of first racks 210 are fixedly connected to one end of the connecting block 27 close to the first roller 23. The first racks 210 and the first gear 24 are engaged with each other. A connecting rod 28 is fixedly connected to one end of the connecting block 27 away from the first rack 210, and a pressing plate 29 is fixedly connected to the other end of the connecting rod 28 away from the connecting block 27. The pressing plate 29 pushes the connecting rod 28, and the connecting rod 28 pushes the two first racks 210 to move through the connecting block 27.
[0037] The working principle of this embodiment is as follows: the doctor uses the handgrip 2 to insert the chuck 4 and the support rod 3 into the patient's body through the minimally invasive incision. When clamping is required, the doctor first presses the pressing plate 29, and the pressing plate 29 pushes the connecting rod 28. The connecting rod 28 pushes the first rack 210 to move through the connecting block 27. The first rack 210 drives the first gear 24 to rotate, and the first gear 24 drives the first roller 23 to rotate. The first roller 23 reels the first steel wire rope 5, so that the first steel wire rope 5 drives the third roller 46 to rotate, and the third roller 46 drives the second clamping jaw 47 to open outward, and then the chuck 4 is aligned with the position that needs to be clamped.
[0038] Afterwards, the doctor releases the pressing plate 29, the first torsion spring 26 drives the first roller 23 to rotate in the opposite direction, and the first steel wire rope 5 is released. The first roller 23 drives the first gear 24 to rotate, and the first gear 24 pushes the connecting block 27 through the first rack 210. The connecting block 27 pushes the pressing plate 29 to reset through the connecting rod 28. At this time, since the first steel wire rope 5 no longer pulls the third roller 46 to rotate, the third roller 46 rotates in the opposite direction and resets under the action of the third torsion spring 48, thereby driving the second jaw 47 to close inward and cooperate with the first jaw 44 for clamping. At the same time, the first limit rod 410 prevents the second jaw 47 and the first jaw 44 from rotating too much.
[0039] When locking closure 752 is in the state of being locked, the first clutch pedal 730 of locking closure 752 is in the state of being locked, and the second clutch pedal 730 of locking closure 752 is in the state of being locked.
[0040] After that, the pressing rod 723 is released, and the second spring 719 pushes the second rack 720 to reset. At this time, the second gear 75 rotates in the opposite direction, and the second ratchet 725 pushes away the wedge block 729, thereby not driving the rotating shaft 72. Then the second rack 720 disengages from the meshing state with the second gear 75, thereby preventing the first ratchet 73 from rotating in the opposite direction to drive the second gear 75 to rotate. The second gear 75 and the second rack 720 are stuck with each other. By repeatedly pushing the pressing rod 723, the fourth roller 74 can continue to rotate in one direction, so that the second wire rope 6 is continuously tightened, thereby increasing the tension that the second wire rope 6 can provide.
[0041] When the push plate 716 is pushed, the push plate 716 pushes the push rod 713 through the first adjustment rod 715, and the push rod 713 drives the swing rod 76 to rotate through the cooperation of the slider 714 and the bar hole 77. At this time, the second hook 79 releases the blocking of the first ratchet 73. The first ratchet 73 rotates a small angle under the push of the fourth torsion spring 724, and the first hook 78 on the swing rod 76 blocks the first ratchet 73. After the push plate 716 is released, the first spring 717 pushes the push plate 716 to return to its original position, thereby returning the swing rod 76 to its original position. The first hook 78 releases the blocking of the first ratchet 73, and the first ratchet 73 is rotated to a certain angle by the fourth torsion spring 724 and then is clamped by the second hook 79, so that the fourth roller 74 loosens the second steel wire rope 6, reducing the tension of the second steel wire rope 6, thereby increasing the torque provided by the second torsion spring 45 to the first clamp 44, thereby improving the clamping force. Since each press of the push plate 716 and the pressing rod 723 will only drive the first ratchet 73 to rotate a small angle, the clamping force can be precisely adjusted.
[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.
Claims
1. A medical surgical forceps with adjustable locking state, comprising a housing (1), characterized in that: An adjustment mechanism (7) is provided in the housing (1); a handle (2) is fixedly connected to the upper surface of the housing (1); an end of the handle (2) away from the housing (1) is fixedly connected to a support rod (3); and an end of the support rod (3) away from the handle (2) is fixedly connected to a chuck (4); The chuck (4) includes a mounting plate (41) fixedly connected to the support rod (3), a pair of second fixed shafts (42) fixedly connected inside the mounting plate (41), a second roller (43) and a third roller (46) respectively passing through the second fixed shafts (42) and rotatably connected thereto, a second steel wire rope (6) fixedly connected to the second roller (43), and a first steel wire rope (5) fixedly connected to the third roller (46).
2. The medical surgical forceps with adjustable locking state according to claim 1, characterized in that: A first clamping jaw (44) is fixedly connected to the second roller (43), a second clamping jaw (47) is fixedly connected to the third roller (46), a second torsion spring (45) is fixedly connected to one side of the second roller (43), a third torsion spring (48) is fixedly connected to one side of the third roller (46), the third torsion spring (48) and the second torsion spring (45) are both fixedly connected to the mounting plate (41), a first limiting rod (410) is fixedly connected inside the mounting plate (41), and a first groove (49) corresponding to the first limiting rod (410) is provided on the inner sides of the first clamping jaw (44) and the second clamping jaw (47).
3. The medical surgical forceps with adjustable locking state according to claim 1, characterized in that: The handle (2) includes a shell (21) fixedly connected to the outer shell (1), a first fixed shaft (22) fixedly connected inside the shell (21), a first roller (23) rotatably connected to the first fixed shaft (22), a first steel wire rope (5) fixedly connected to the first roller (23), both ends of the first roller (23) are fixedly connected to a first gear (24), one side of the first gear (24) is fixedly connected to a first torsion spring (26), an end of the first torsion spring (26) away from the first gear (24) is fixedly connected to a first baffle (25), and the first baffle (25) is fixedly connected to the first fixed shaft (22).
4. The medical surgical forceps with adjustable locking state according to claim 3, characterized in that: A connecting block (27) is slidably connected through the shell (21), and a pair of first racks (210) are fixedly connected to one end of the connecting block (27) close to the first roller (23), and the first racks (210) and the first gear (24) are meshed with each other. An end of the connecting block (27) away from the first rack (210) is fixedly connected to a connecting rod (28), and an end of the connecting rod (28) away from the connecting block (27) is fixedly connected to a pressing plate (29).
5. The medical surgical forceps with adjustable locking state according to claim 1, characterized in that: The adjusting mechanism (7) comprises a fixing plate (71) fixedly connected to the housing (1); a rotating shaft (72) is rotatably connected to the fixing plate (71); one end of the rotating shaft (72) is fixedly connected to a first ratchet (73); an end of the first ratchet (73) away from the rotating shaft (72) is fixedly connected to a fourth roller (74); a second steel wire rope (6) is fixedly connected to the fourth roller (74); and an end of the rotating shaft (72) away from the first ratchet (73) is rotatably connected to a second gear (75).
6. The medical surgical forceps with adjustable locking state according to claim 5, characterized in that: A third baffle (718) is fixedly connected to the shell (1), a second spring (719) is fixedly connected to the third baffle (718), an end of the second spring (719) away from the third baffle (718) is fixedly connected to a second rack (720), an end of the second rack (720) away from the second spring (719) is fixedly connected to a second adjustment rod (722), a limiting block (721) is fixedly connected to the shell (1), an end of the second adjustment rod (722) away from the second rack (720) is rotatably connected to a slide rod (730), a pressing rod (723) is slidably connected to the outside of the slide rod (730), and the pressing rod (723) is rotatably connected to the shell (1).
7. The medical surgical forceps with adjustable locking state according to claim 6, characterized in that: A plurality of second ratchets (725) are fixedly connected in the second gear (75), a plurality of second grooves (727) are provided on the rotating shaft (72), a wedge block (729) is rotatably connected in the second groove (727), a third spring (728) is fixedly connected between the wedge block (729) and the second groove (727), a plurality of through holes (726) are provided on the first ratchet (73), a fourth torsion spring (724) is fixedly connected once the first ratchet (73) is away from the fourth roller (74), and the fourth torsion spring (724) is fixedly connected to the fixing plate (71).
8. The medical surgical forceps with adjustable locking state according to claim 7, characterized in that: The fixed plate (71) is rotatably connected to a rocker arm (76), one end of the rocker arm (76) is fixedly connected to a first hook (78), an end of the rocker arm (76) close to the first hook (78) is provided with a strip hole (77), a slider (714) is slidably connected in the strip hole (77), a push rod (713) is fixedly connected to the slider (714), an end of the push rod (713) away from the slider (714) is fixedly connected to a first adjusting rod (715), an end of the first adjusting rod (715) away from the push rod (713) is fixedly connected to a push plate (716), a first spring (717) is provided on the outer sleeve of the first adjusting rod (715), one end of the first spring (717) is fixedly connected to the push plate (716), and an end of the first spring (717) away from the push plate (716) is fixedly connected to the housing (1).
9. The medical surgical forceps with adjustable locking state according to claim 8, characterized in that: The end of the rocker arm (76) away from the first hook (78) is rotatably connected to the second hook (79), the end of the rocker arm (76) close to the second hook (79) is fixedly connected to the second baffle (710), the second baffle (710) is fixedly connected to a tension spring (711), the end of the tension spring (711) away from the second baffle (710) is fixedly connected to the second hook (79), the end of the rocker arm (76) close to the second hook (79) is fixedly connected to the second limiting rod (712), and the first adjusting rod (715) passes through the sliding connection housing (1).