A rongeur for ophthalmic surgery

Abstract

The present invention relates to a bone-holding forceps for ophthalmic surgery, comprising a cross bar, a shearing portion provided at the left end of the cross bar, and a hand-held portion provided at the right end of the cross bar, wherein the shearing portion comprises a sunken groove with an opening facing upward, a shearing head provided in the sunken groove, a collecting chamber provided on the lower end surface of the shearing head, a push plate provided on the left end surface of the sunken groove, and a lower end of the push plate hinged to the sunken groove; the hand-held portion comprises a front handle and a rear handle, when the front handle is swung toward the rear handle, it can drive the shearing head to move left, and the front handle continues to swing toward the rear handle to drive the push plate to swing to the right; the present invention improves the shearing portion of the existing bone-holding forceps, so that the bitten bone can be pushed backward to between the sharp teeth by the baffle after each biting action, so that the backward-moving shearing head can drive the bone to move synchronously backward to enter the collecting chamber through the backward-inclined sharp teeth, so that the bone-holding forceps can complete multiple bone-holding operations after entering the wound once, thereby greatly improving the bone-holding efficiency.

Description

Technical Field

[0001] The present invention relates to the field of medical instruments, in particular to a pair of rongeurs for ophthalmic surgery. Background Art

[0002] Rongeur is often used in ophthalmic surgery, such as anterior orbital surgery via the intranasal approach. In order to facilitate the rongeur to the designated position, the existing rongeur all has a certain length and the jaws adopt a flat-push shearing method, such as the inferior nasal meatus maxillary sinus window rongeur disclosed in announcement number CN118902538A. This type of rongeur has the following problems during actual use: 1. Since the bone biting operation cannot be completed in one go, the bones in the same part need to be sheared multiple times, so it is necessary to insert the rongeur once for continuous bone biting. During each opening and closing process of the shearing part, the bitten bone fragments may fall at the wound position, which is difficult to clean up later and causes medical accidents. Therefore, the operator's proficiency is required to be high; 2. If the rongeur is removed after each bite, the efficiency of the operation is greatly affected and each insertion and removal of the rongeur will cause certain damage to the patient's nasal cavity. Summary of the Invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention adopts a bone-biting forceps for ophthalmic surgery, which solves the problem in the prior art that it is difficult to insert the forceps into the nasal cavity at one time and perform multiple bone-biting operations continuously.

[0004] The technical solution provided is a rongeur for ophthalmic surgery, comprising a horizontally arranged horizontal bar, a shearing portion provided at the left end of the bar, and a hand-held portion provided at the right end of the bar. The shearing portion comprises a sink with an upward opening, a shearing head provided in the sink, and the shearing head can move horizontally along the axis of the bar. A collecting chamber extending to the left end face of the shearing head is provided on the lower end face of the sink, a push plate is provided on the left end face of the sink, and the lower end of the push plate is hinged to the sink.

[0005] The hand-held part includes a front handle and a rear handle, the rear handle and the cross bar are fixedly connected, and the front handle is hinged to the cross bar. When the front handle is swung toward the rear handle, it can drive the shearing head to move to the left until the left end face of the shearing head is in contact with the left end face of the sink. The front handle continues to swing toward the rear handle to drive the push plate to swing to the right. When the front handle is away from the rear handle, the push plate and the shearing head can be reset in sequence.

[0006] The right end of the cross bar is provided with a give way groove running through the upper and lower end faces, and the right end of the shearing head is fixed with an upper clamp rod, the right end of the upper clamp rod passes through the cross bar to the give way groove, the front handle hinge shaft is located in the give way groove, and a cam is fixed at the hinge position. When the cam rotates with the front handle to the rear handle position, it can squeeze the upper clamp rod outward until the upper clamp rod contacts the far rest end of the cam, the left end face of the shearing head fits into the left end face of the sink groove, and when the cam continues to rotate until the front handle contacts the rear handle, the right end of the upper clamp rod never leaves the far rest end of the cam.

[0007] The right end of the cross bar is located at the lower side of the upper clamp rod and is provided with a cross hole, a slider is provided in the cross hole, and a compression spring is provided between the left end of the slider and the cross hole. The compression spring causes the right end of the slider to extend out of the cross hole and contact with the cam. When the cam rotates counterclockwise, it can drive the slider to move to the left; the left end face of the sinking groove is located on the left side of the push plate and is provided with a countersunk hole, and the left end face of the countersunk hole is provided with a ventilation hole, which is connected with the left end face of the cross hole through the inside of the cross bar, and a bellows is provided in the countersunk hole, and the two ends of the bellows are fixedly connected to the ventilation hole and the push plate respectively.

[0008] A shaft shoulder is provided at the middle portion of the upper clamp rod, and a compression spring is connected between the left end surface of the shaft shoulder and the cross bar.

[0009] A blind hole is provided on the left side of the lower end face of the sink, and a ventilation hole passes through the left and right end faces of the blind hole. A slide plate that can move up and down is provided in the blind hole, and a compression spring is provided between the slide plate and the blind hole. Several sharp teeth are provided on the upper end face of the slide plate and the upper end face of the collection chamber respectively, and the tips of all the sharp teeth are tilted to the right.

[0010] A slag discharge port connected to the collecting chamber is provided on the right side of the upper end surface of the shearing head. A cover plate is hinged on the slag discharge port. The left end of the cover plate is hinged to the shearing head, and an L-shaped buckle is provided on the right end of the cover plate.

[0011] The free ends of the front handle and the rear handle are both fixed with rings.

[0012] The present invention improves the shearing portion of the existing bone rongeurs so that the bitten bone fragments can be pushed backward to between the sharp teeth by the push plate after each biting action, so that the backward moving shearing head can drive the bone fragments to move backward synchronously through the backward inclined sharp teeth. Then, when the shearing head is reset, the bone fragments can be blocked by the lower sharp teeth until they enter the collection cavity. This can ensure that the bone rongeurs can complete several bone biting operations after entering the wound once, greatly improving the bone biting efficiency. At the same time, it can prevent the bone fragments from falling into the nasal cavity or the wound during repeated bone biting operations of the bone rongeurs, causing medical accidents, thereby reducing surgical risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the present invention.

[0014] Figure 2 It is a front sectional view of the present invention.

[0015] Figure 3 for Figure 2 A magnified view of center.

[0016] Figure 4 This is a front cross-sectional view of the front handle of the present invention when it is close to the rear handle.

[0017] Figure 5 for Figure 4 Magnified view of B.

[0018] Figure 6 It is a three-dimensional diagram of the shearing head of the present invention. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0020] Depend on Figures 1 to 6 The present invention includes a horizontally placed horizontal bar 1, a shearing portion 2 is provided at the left end of the crossbar 1, and a hand-held portion 3 is provided at the right end of the crossbar 1. The shearing portion 2 includes a sink 4 with an upward opening, a shearing head 5 is provided in the sink 4, and the shearing head 5 can move horizontally along the axis of the crossbar 1. The lower end surface of the shearing head 5 is provided with a collecting chamber 6 that penetrates to the left end surface. The left end surface of the sink 4 is provided with a push plate 7, and the lower end of the push plate 7 is hinged to the sink 4.

[0021] The hand-held portion 3 includes a front handle 8 and a rear handle 9, the rear handle 9 and the cross bar 1 are fixedly connected, and the front handle 8 is hinged to the cross bar 1. When the front handle 8 is swung toward the rear handle 9, it can drive the shearing head 5 to move to the left until the left end face of the shearing head 5 is in contact with the left end face of the sink 4. The front handle 8 continues to swing toward the rear handle 9 to drive the push plate 7 to swing to the right. When the front handle 8 is away from the rear handle 9, the push plate 7 and the shearing head 5 can be reset in sequence.

[0022] The right end of the cross bar 1 is provided with a give way groove 10 passing through the upper and lower end surfaces, and the right end of the shearing head 5 is fixed with an upper clamp rod 11. The right end of the upper clamp rod 11 passes through the cross bar 1 to the give way groove 10, and the hinge axis of the front handle 8 is located in the give way groove 10, and a cam 12 is fixed at the hinge position. When the cam 12 rotates with the front handle 8 to the position of the rear handle 9, it can squeeze the upper clamp rod 11 outward until the upper clamp rod 11 contacts the far rest end of the cam 12, and the left end face of the shearing head 5 is in contact with the left end face of the sink 4. When the cam 12 continues to rotate until the front handle 8 contacts the rear handle 9, the right end of the upper clamp rod 11 never leaves the far rest end of the cam 12.

[0023] The right end of the cross bar 1 is located at the lower side of the upper clamp rod 11 and is provided with a cross hole 13, a slider 14 is provided in the cross hole 13, and a compression spring is provided between the left end of the slider 14 and the cross hole 13. The compression spring causes the right end of the slider 14 to extend out of the cross hole 13 and contact the cam 12. When the cam 12 rotates counterclockwise, it can drive the slider 14 to move to the left; the left end surface of the sinking groove 4 is located on the left side of the push plate 7 and is provided with a countersink 15. The left end surface of the countersink 15 is provided with a ventilation hole 16, and the ventilation hole 16 is connected with the left end surface of the cross hole 13 through the inside of the cross bar 1, and a bellows 17 is provided in the countersink 15. The two ends of the bellows 17 are fixedly connected to the ventilation hole 16 and the push plate 7 respectively.

[0024] A shaft shoulder is provided in the middle of the upper clamp rod 11 , and a compression spring is connected between the left end face of the shaft shoulder and the cross bar 1 , so that the compression spring always pushes the upper clamp rod 11 to the right.

[0025] A blind hole 18 is provided on the left side of the lower end face of the sink 4, and the ventilation hole 16 passes through the left and right end faces of the blind hole 18. A slide plate 19 capable of moving up and down is provided in the blind hole 18, and a compression spring is provided between the slide plate 19 and the blind hole 18. Several sharp teeth 20 are respectively provided on the upper end face of the slide plate 19 and the upper end face of the collecting chamber 6, and the tips of all the sharp teeth 20 are tilted to the right.

[0026] A slag discharge port 21 connected to the collecting chamber 6 is provided on the right side of the upper end face of the shearing head 5. A cover plate 22 is hinged on the slag discharge port 21. The left end of the cover plate 22 is hinged to the shearing head 5. An L-shaped buckle 23 is provided on the right end of the cover plate 22. The buckle 23 can fit with the right end face of the shearing head 5 and limit the cover plate 22 from opening the slag discharge port 21 through friction.

[0027] A ring 24 is fixed to the free end of the front handle 8 and the rear handle 9 .

[0028] It is worth mentioning that the outer edge surface of the slider 14 is provided with a rubber layer and can seal the transverse hole 13, so that the cavity formed by the transverse hole 13, the ventilation hole 16, the blind hole 18 and the bellows 17 is in a sealed state.

[0029] When using the present invention, first, hold the hand-held portion 3 and pass the crossbar 1 through the nasal cavity so that the cutting portion 2 is placed near the lesion, and the front handle 8 is located at the end away from the rear handle 9. Then, move the cutting portion 2 to place the part to be removed between the sink groove 4 and the cutting head 5. Then, move the front handle 8 to a position close to the rear handle 9. The front handle 8 can drive the upper clamp rod 11 and the cutting head 5 to move forward through the cam 12. The bone is sheared by the mutual compression between the edge of the cutting head 5 and the sink groove 4, completing the bone biting operation.

[0030] Then continue to rotate the front handle 8 in the direction of the rear handle 9, and the cam 12 continues to rotate to move the slider 14 inward along the transverse hole 13. The slider 14 compresses the cavity of the transverse hole 13, allowing the gas to enter the bellows 17 through the ventilation hole 16. After the bellows 17 expands, it drives the push plate 7 to swing along the hinge axis toward the inside of the sink groove 4, which can move the sheared bone fragments to between the sharp teeth 20 on the upper and lower sides;

[0031] Then, the front handle 8 is moved in the opposite direction, and the slider 14 and the upper clamp rod 11 are reset in sequence under the action of the compression spring. When the slider 14 is reset, the push plate 7 can be driven to reset, and when the upper clamp rod 11 is reset, the shearing head 5 can be driven to move backward. Since the tips of all the sharp teeth 20 are deflected toward the collecting chamber 6, the bone fragments can be driven to move synchronously during the backward movement of the shearing head 5, and the slide plate 19 can overcome the elastic force of the compression spring and move downward to make way; then, the above operation is repeated to continue the bone biting operation. When the shearing head 5 moves forward for a new round of shearing, the bone fragments bitten off in the previous round can be blocked by the sharp teeth 20 on the lower slide plate 19 and cannot move forward, and stay in the collecting chamber 6;

[0032] After the bone biting operation is completed, the shearing part 2 is removed from the nasal cavity, and then the cover plate 22 is manually opened through the buckle 23 to discharge the bone fragments collected in the collecting cavity 6 in a unified manner.

[0033] Compared with the prior art, the present invention has the following advantages:

[0034] The present invention improves the shearing portion of the existing bone rongeurs so that the bitten bone fragments can be pushed backward by the push plate 7 to between the sharp teeth 20 after each biting action, so that the backward-moving shearing head 5 can drive the bone fragments to move backward synchronously through the backward-inclined sharp teeth 20. Then, when the shearing head 5 is reset, the bone fragments can be blocked by the lower sharp teeth 20 until they enter the collection chamber 6. This ensures that the bone rongeurs can complete multiple bone biting operations after entering the wound once, greatly improving the bone biting efficiency. At the same time, it can prevent the bone fragments from falling into the nasal cavity or the wound during repeated bone biting operations of the bone rongeurs, causing medical accidents, thereby reducing surgical risks.

[0035] The cam 12 squeezes and pushes the upper and lower jaw rods 11 and the sliders 14 in sequence during the rotation of the front handle 8, so that the shearing head 5 can complete the bone resection first, and then the push plate 7 pushes the bone fragments backward, ensuring that the bone fragments can be stably pushed between the sharp teeth 20 without falling. The slider 14 resets before the upper jaw rod 11, ensuring that the push plate 7 is in the initial position before the shearing head 5 performs the next bone biting operation without affecting the bone biting operation.

[0036] The slide plate 19 can move downward to make way, so that the bitten bone fragments can move smoothly backward to the rear side of the collecting chamber 6. During the downward movement of the slide plate 19, the push plate 7 can be further pushed to swing backward.

Claims

1. A rongeur for ophthalmic surgery, comprising horizontally arranged horizontal bars (1), characterized in that: The left end of the crossbar (1) is provided with a shearing portion (2), and the right end of the crossbar (1) is provided with a hand-held portion (3). The shearing portion (2) includes a sink (4) with an opening facing upward, a shearing head (5) is provided in the sink (4), and the shearing head (5) can move horizontally along the axis direction of the crossbar (1). The lower end surface of the shearing head (5) is provided with a collecting chamber (6) extending through the left end surface. The left end surface of the sink (4) is provided with a push plate (7), and the lower end of the push plate (7) is hinged to the sink (4). The handheld portion (3) includes a front handle (8) and a rear handle (9), the rear handle (9) and the crossbar (1) are fixedly connected, and the front handle (8) and the crossbar (1) are hinged. When the front handle (8) swings in the direction of the rear handle (9), the shearing head (5) can be driven to move to the left until the left end face of the shearing head (5) is in contact with the left end face of the sink (4). The front handle (8) continues to swing in the direction of the rear handle (9) to drive the push plate (7) to swing to the right. When the front handle (8) moves away from the rear handle (9), the push plate (7) and the shearing head (5) can be reset in sequence. The right end of the crossbar (1) is provided with a clearance groove (10) passing through the upper and lower end surfaces, and the right end of the shearing head (5) is fixed with an upper clamp rod (11), and the right end of the upper clamp rod (11) passes through the crossbar (1) to the clearance groove (10), and the hinge axis of the front handle (8) is located in the clearance groove (10), and a cam (12) is fixed at the hinge position. When the cam (12) rotates with the front handle (8) to the rear handle (9) position, it can squeeze the upper clamp rod (11) outward until the upper clamp rod (11) contacts the far rest end of the cam (12), the left end face of the shearing head (5) is in contact with the left end face of the sink groove (4), and when the cam (12) continues to rotate until the front handle (8) contacts the rear handle (9), the right end of the upper clamp rod (11) never leaves the far rest end of the cam (12); The right end of the crossbar (1) is located at the lower side of the upper clamp rod (11) and is provided with a cross hole (13). A slider (14) is provided in the cross hole (13). A compression spring is provided between the left end of the slider (14) and the cross hole (13). The compression spring causes the right end of the slider (14) to extend out of the cross hole (13) and contact the cam (12). When the cam (12) rotates counterclockwise, it can drive the slider (14) to move leftward; the left end surface of the sinking groove (4) is located on the left side of the push plate (7) and is provided with a sink hole (15). The left end surface of the sink hole (15) is provided with a ventilation hole (16). The ventilation hole (16) is connected to the left end surface of the crossbar (1) through the inside of the crossbar (1). A bellows (17) is provided in the sink hole (15). The two ends of the bellows (17) are fixedly connected to the ventilation hole (16) and the push plate (7) respectively. A blind hole (18) is provided on the left side of the lower end face of the sink (4), and the ventilation hole (16) passes through the left and right end faces of the blind hole (18). A slide plate (19) capable of moving up and down is provided in the blind hole (18), and a compression spring is provided between the slide plate (19) and the blind hole (18). The upper end face of the slide plate (19) and the upper end face of the collecting chamber (6) are respectively provided with a plurality of sharp teeth (20), and the tips of all the sharp teeth (20) are tilted to the right. When in use, the bitten bone fragments can be pushed backward by the push plate (7) to between the sharp teeth (20) after each biting action, so that the shearing head (5) moving backward can drive the bone fragments to move backward synchronously through the sharp teeth (20) tilted backward, and then when the shearing head (5) is reset, the bone fragments can be blocked by the lower sharp teeth (20) until they enter the collection chamber (6), which can ensure that the bone rongeur can complete several bone biting operations by entering the wound once; the cam (12) squeezes and pushes the upper clamp rod (11) and the slider (14) on the upper and lower sides in turn during the rotation of the front handle (8), so that the shearing head (5) completes the bone resection first, and then the push plate (7) pushes the bone fragments backward, ensuring that the bone fragments can be stably pushed between the sharp teeth (20) without falling, and the slider (14) resets before the upper clamp rod (11), ensuring that the shearing head (5) is in the initial position before the next bone biting operation, so as not to affect the bone biting operation.

2. The rongeur for ophthalmic surgery according to claim 1, characterized in that: A shaft shoulder is provided in the middle of the upper clamp rod (11), and a compression spring is connected between the left end surface of the shaft shoulder and the cross bar (1).

3. The rongeur for ophthalmic surgery according to claim 1, characterized in that: The shearing head (5) is provided with a slag discharge port (21) on the right side of the upper end surface thereof, which is connected to the collecting chamber (6). A cover plate (22) is hingedly connected to the slag discharge port (21). The left end of the cover plate (22) is hingedly connected to the shearing head (5), and an L-shaped buckle (23) is provided on the right end of the cover plate (22).

4. The rongeur for ophthalmic surgery according to claim 1, characterized in that: The free ends of the front handle (8) and the rear handle (9) are both fixed with rings (24).

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