A forceps

Abstract

The utility model relates to the field of medical apparatus and instruments more particularly is a kind of mouth tongs, including the extension rod with fixed handle being equipped in one end, the other end of extension rod has gear I, gear I is fixed with jaw arm, and fixed forceps are equipped in the end of jaw arm away from extension rod, and rotating forceps are rotated on jaw arm, rotating handle is rotated on fixed handle, and traction frame is equipped in the end of rotating handle close to extension rod, and traction line is connected between traction frame and rotating forceps, by control rotating handle rotating on fixed handle, control rotating forceps rotating on jaw arm, close or away from fixed forceps, sliding plate is limited sliding in extension rod, both ends of sliding plate are equipped with rack, gear II is rotated on fixed handle, two racks are respectively engaged with gear I and gear II meshing transmission, and the end of gear II is fixed with knob;The utility model front end can be bent.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and more specifically to a biting forceps. Background Technology

[0002] In otolaryngology, surgeons often need to use forceps for laryngoscopy. Traditional laryngoscopy forceps have a fixed, straight tip that cannot be bent, making it difficult to remove lesions in poorly exposed glottic areas. In cases of high-lying lesions, it is often necessary to forcefully bend the forceps, resulting in instrument damage. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a biting pliers with a bendable front end.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows:

[0005] A type of biting pliers includes an extension rod with a fixed handle at one end, a gear I rotating at the other end of the extension rod, a plier arm fixed to the gear I, a fixed clamp at the end of the clamp arm away from the extension rod, a rotating clamp rotating on the clamp arm, a rotating handle rotating on the fixed handle, a traction frame near the end of the rotating handle near the extension rod, and a traction line connecting the traction frame and the rotating clamp. By controlling the rotation of the rotating handle on the fixed handle, the rotating clamp is controlled to rotate on the clamp arm, moving closer to or away from the fixed clamp. A sliding plate is limited and slidable inside the extension rod, with racks at both ends of the sliding plate. A gear II rotating on the fixed handle, with the two racks meshing with gear I and gear II respectively for transmission, and a knob fixed at one end of gear II.

[0006] The traction line passes through the extension rod.

[0007] The traction line passes through gear I.

[0008] The clamp arm has an axially limited sliding slider, a connecting plate rotates between the slider and the rotating clamp, and the slider is fixedly connected to the traction line.

[0009] A spring is provided between the slider and the clamp arm.

[0010] The traction line is a flexible steel wire.

[0011] A nut is threaded onto the knob.

[0012] The angle between the fixed handle and the extension rod is an obtuse angle.

[0013] The clamp arm rotates at an angle between -90° and 90° on the extension rod.

[0014] Both the fixed handle and the rotating handle are provided with finger holes.

[0015] The beneficial effects of this utility model are:

[0016] During surgery, by turning the knob, the transmission forceps arm rotates on the extension rod, causing the fixed forceps and rotating forceps to bend relative to the extension rod, which is convenient for adapting to the needs of minimally invasive surgery with complex anatomical structures. The bendable design allows the forceps to adapt to different anatomical angles, improving the success rate of high glottic lesion resection and enhancing surgical precision. It avoids repeated traction on the laryngoscope, reduces tissue trauma, and lowers the incidence of postoperative laryngeal edema. The operation is convenient when controlling the bend, and the single-handed adjustment design saves surgical time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the bite forceps structure;

[0018] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure;

[0019] Figure 3 The diagram shows the structure of the biting pliers when bent at -90° and 90°.

[0020] Figure 4 This is a schematic diagram of the front end of the bite forceps;

[0021] Figure 5 This is a schematic diagram of the clamp arm structure;

[0022] Figure 6 A schematic diagram of the rotating clamp, slider, and connecting plate;

[0023] Figure 7 This is a schematic diagram of the structure of the skateboard and the rack;

[0024] Figure 8 This is a schematic diagram of the structure of gear II, knob, and nut.

[0025] In the picture:

[0026] Extension rod 11; fixed handle 12; rotating handle 13; traction frame 14; clamp arm 15; fixed clamp 16; rotating clamp 17; gear I 18; slider 19; connecting plate 20; spring 21; traction line 22; sliding plate 23; rack 24; gear II 25; knob 26; nut 27. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] A type of biting pincer, such as Figure 1-8 As shown, it includes an extension rod 11 with a fixed handle 12 at one end. The fixed handle 12 and the extension rod 11 can be integrally formed or welded together. The extension rod 11 is hollow inside and has two side plates extending from the end away from the fixed handle 12. A gear I 18 rotates between the two side plates. A clamp arm 15 is welded to the gear I 18. A fixed clamp 16 is integrally formed at the end of the clamp arm 15 away from the extension rod 11. A rotating clamp 17 rotates within the clamp arm 15 via a horizontal axis. A rotating handle 13 rotates via a horizontal axis. On the fixed handle 12, a traction frame 14 is integrally formed on the rotating handle 13 near the extension rod 11. A traction shaft passes through the traction frame 14, and a traction sleeve is fitted on the traction shaft. A traction line 22 is welded and fixed to the side of the traction sleeve. The other end of the traction line 22 is connected to the rotating clamp 17. By controlling the rotating handle 13 to rotate on the fixed handle 12, the traction frame 14 drives the traction line 22 to move, which in turn causes the rotating clamp 17 to rotate on the clamp arm 15, moving closer to or away from the fixed clamp 16, thus forming the closing or opening of the clamp.

[0029] The slide plate 23 is axially limited and slides within the inner cavity of the extension rod 11. Both ends of the slide plate 23 are welded and fixed with racks 24. Gear II 25 rotates on the fixed handle 12. Gear I 18 and gear II 25 rotate with the two racks 24 respectively. A knob 26 is fixed to one end of the central shaft of gear II 25. By rotating the knob 26, gear II 25 can rotate, thereby engaging the transmission racks 24, causing the slide plate 23 to slide axially within the inner cavity of the extension rod 11. This, in turn, causes the other rack 24 to move, thus engaging the transmission racks 24. The transmission gear I18 drives the forceps arm 15 to rotate, which in turn causes the fixed forceps 16 and the rotating forceps 17 to bend relative to the extension rod 11. This allows the user to adapt to the needs of minimally invasive surgery on complex anatomical structures. The bendable design allows the forceps to adapt to different anatomical angles, improving the success rate of high glottic lesion resection and enhancing surgical precision. It also avoids repeated traction on the laryngoscope, reducing tissue trauma and the incidence of postoperative laryngeal edema. The bendable design is easy to operate, and the single-handed adjustment design saves surgical time.

[0030] Moreover, when the clamp arm 15 rotates with the gear I 18, it does not affect the rotation of the rotating clamp 17 on the clamp arm 15 controlled by the traction line 22.

[0031] Among them, there is a large frictional damping between gear II 25 and fixed handle 12. Therefore, after gear II 25 is rotated by knob 26, the frictional damping will limit gear II 25 to prevent it from rotating arbitrarily, thereby limiting the rotation angle of clamp arm 15.

[0032] Further:

[0033] The traction line 22 passes through the extension rod 11, which makes the overall clamping pliers neat. At the same time, in order to prevent the traction line 22 from protruding from the end of the extension rod 11 when the clamp arm 15 rotates, the traction line 22 passes through the gear I 18.

[0034] Further:

[0035] The clamp arm 15 is axially limited and slides with a slider 19. A connecting plate 20 rotates between the slider 19 and the rotating clamp 17. The slider 19 is fixedly connected to the traction line 22.

[0036] The clamp arm 15 is provided with a sliding groove in the axial direction to limit the axial sliding of the slider 19. The slider 19 slides in the axial direction, and the connecting plate 20 drives the rotating clamp 17 to rotate. Then, the traction line 22 is welded and fixed to the slider 19, which makes it easy to control the smoothness of the axial sliding of the traction line 22 by rotating the handle 13.

[0037] Meanwhile, by providing a spring 21 between the slider 19 and the clamp arm 15, the elastic force of the spring 21 can push the slider 19 to slide towards the rotating clamp 17, thereby assisting the rotating clamp 17 to rotate away from the fixed clamp 16 and open when the traction line 22 slides towards the rotating clamp 17.

[0038] Further:

[0039] The traction line 22 is a flexible steel wire, which precisely controls the rotation angle of the rotating clamp 17.

[0040] Further:

[0041] After controlling the rotation of the clamp arm 15 by turning the knob 26, turn the nut 27 to move the nut 27 axially through the thread, and then tighten the fixed handle 12, so that the knob 26 and the fixed handle 12 are fixed relative to each other, thereby achieving the positioning of the rotation angle of the clamp arm 15, avoiding angle deviation during operation, and the overall operation is simple and convenient.

[0042] Further:

[0043] The angle between the fixed handle 12 and the extension rod 11 is an obtuse angle to avoid obstruction by the operator's hand and to facilitate observation.

[0044] The clamp arm 15 can rotate on the extension rod 11 at an angle between -90° and 90°, enabling multi-angle and wide-range adjustment for convenient operation.

[0045] Further:

[0046] Both the fixed handle and the rotating handle are provided with finger holes, which make it easy for users to insert their fingers into the finger holes for operation.

[0047] The bite forceps of this application have a body made of medical-grade titanium alloy with an anti-slip coating. The gears, racks, and shafts at all rotating parts are made of high-molecular wear-resistant materials to ensure long-term stability and corrosion resistance. The opening and closing of the bite forceps is controlled by a flexible steel wire, which facilitates the bending of the tip of the bite forceps. At the same time, the bending of the tip of the bite forceps is controlled by the gears and racks to ensure the accuracy of the bending angle.

[0048] Detailed operation steps:

[0049] 1. Preoperative preparation: Insert the tip of the biting forceps into the surgical field through the laryngoscope support channel. The tip is assumed to be in a straight position at 0°, that is, the angle between the forceps arm 15 and the extension rod 11 is 0°.

[0050] 2. Angle adjustment: When the lesion is found to be high during the operation, rotate the knob 26 at the fixed handle 12 (such as rotating clockwise to 45°) to gradually bend the front end (i.e. the clamp arm 15) to the target angle.

[0051] 3. Locking and Operation: Turn the nut 27 to tighten the fixed handle 12, lock the front angle, and bite off the lesion tissue; after removal, rotate the knob in the opposite direction to reset.

[0052] Of course, the above description is not a limitation of this instruction manual, and this utility model is not limited to the examples mentioned above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model are also within the protection scope of this utility model.

Claims

1. A type of biting pliers, characterized in that: The device includes an extension rod with a fixed handle at one end, a gear I rotating at the other end of the extension rod, a clamp arm fixed to the gear I, a fixed clamp at the end of the clamp arm away from the extension rod, a rotating clamp rotating on the clamp arm, a rotating handle rotating on the fixed handle, a traction frame near the end of the rotating handle near the extension rod, and a traction line connecting the traction frame and the rotating clamp. By controlling the rotation of the rotating handle on the fixed handle, the rotating clamp is controlled to rotate on the clamp arm, moving closer to or away from the fixed clamp. A sliding plate is limited and slidable inside the extension rod, with racks at both ends. A gear II rotating on the fixed handle, with the two racks meshing with gear I and gear II respectively for transmission. A knob is fixed at one end of gear II.

2. The biting pliers according to claim 1, characterized in that: The traction line passes through the extension rod.

3. A biting pliers according to claim 2, characterized in that: The traction line passes through gear I.

4. A biting pliers according to claim 1, characterized in that: The clamp arm has an axially limited sliding slider, a connecting plate rotates between the slider and the rotating clamp, and the slider is fixedly connected to the traction line.

5. A biting pliers according to claim 4, characterized in that: A spring is provided between the slider and the clamp arm.

6. A biting pliers according to claim 1, characterized in that: The traction line is a flexible steel wire.

7. A biting pliers according to claim 1, characterized in that: A nut is threaded onto the knob.

8. A biting pliers according to claim 1, characterized in that: The angle between the fixed handle and the extension rod is an obtuse angle.

9. A biting pliers according to claim 1, characterized in that: The clamp arm rotates at an angle between -90° and 90° on the extension rod.

10. A biting pliers according to claim 1, characterized in that: Both the fixed handle and the rotating handle are provided with finger holes.

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