Bone rongeur for ophthalmologic operation

Abstract

The bone rongeur comprises a cross rod, a shearing part is arranged at the left end of the cross rod, a handheld part is arranged at the right end of the cross rod, the shearing part comprises a sinking groove with an upward opening, a shearing head is arranged in the sinking groove, a collecting cavity is formed in the lower end face of the shearing head, a push plate is arranged on the left end face of the sinking groove, and the lower end of the push plate is hinged to the sinking groove; the handheld part comprises a front handle and a rear handle, when the front handle swings towards the rear handle, the shearing head can be driven to move leftwards, and when the front handle continuously swings towards the rear handle, the push plate can be driven to swing rightwards; according to the bone rongeur disclosed by the invention, a shearing part of an existing bone rongeur is improved, so that bite broken bones can be pushed backwards by the baffle plate to a position between the sharp teeth after each occlusion action is finished, and the shearing head moving backwards can drive the broken bones to synchronously move backwards through the sharp teeth inclined backwards to enter a collecting cavity; the bone rongeur can complete multiple times of bone rongeur operation after entering a wound once, and the bone rongeur efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, in particular to a pair of bone 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 rongeurs are of a certain length and the jaws adopt a flat-push shearing method, such as the inferior meatus maxillary sinus window rongeur disclosed in Publication No. 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 extend the rongeur once for continuous bone biting. During each opening and closing process of the shearing part, the broken bones that have been bitten off may fall at the wound site, which is difficult to clean up later and causes medical accidents. Therefore, the operator's proficiency is required to be relatively high. 2. If the rongeur is taken out after each bite, the efficiency of the operation will be 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 bone biting operations continuously for multiple times.

[0004] The technical solution is a bone-holding forceps for ophthalmic surgery, comprising a horizontal horizontal bar, a shearing part is arranged at the left end of the horizontal bar, and a hand-held part is arranged at the right end of the horizontal bar, the shearing part comprises a sink groove with an opening facing upward, a shearing head is arranged in the sink groove, and the shearing head can move horizontally along the axis direction of the horizontal bar, a collecting cavity is arranged on the lower end face of the shearing head, and a push plate is arranged on the left end face of the sink groove, and the lower end of the push plate is hinged to the sink groove; The hand-held part includes a front handle and a rear handle, the rear handle and the cross bar are fixedly connected, the front handle and the cross bar are hinged, when the front handle swings 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.

[0005] The right end of the cross bar is provided with a clearance groove which passes through the upper and lower end surfaces, 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 clearance groove, the front handle hinge shaft is located in the clearance groove, and a cam is fixed at the hinge position. When the cam rotates toward the rear handle position with the front handle, it can squeeze the upper clamp rod outward until the upper clamp rod contacts the far rest end of the cam, and the left end face of the shearing head fits against 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.

[0006] 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 arranged in the cross hole, a compression spring is arranged 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, and when the cam rotates counterclockwise, it can drive the slider to move to the left; the left end surface of the sink groove is located on the left side of the push plate and is provided with a countersunk hole, a ventilation hole is arranged on the left end surface of the countersunk hole, the ventilation hole is connected with the left end surface of the cross hole through the inside of the cross bar, a bellows is arranged in the countersunk hole, and both ends of the bellows are fixedly connected to the ventilation hole and the push plate respectively.

[0007] A shaft shoulder is arranged in the middle of the upper clamp rod, and a compression spring is connected between the left end surface of the shaft shoulder and the cross bar.

[0008] A blind hole is provided on the left side of the lower end face of the trough, and a ventilation hole runs through the left and right end faces of the blind hole. A slide plate capable of moving 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 collecting chamber, respectively, and the tips of all the sharp teeth are tilted to the right.

[0009] 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. An L-shaped buckle is provided on the right end of the cover plate.

[0010] The free ends of the front handle and the rear handle are both fixed with circular rings.

[0011] The present invention improves the shearing portion of the existing bone rongeurs so that the bitten bone fragments can be pushed backwards to between the sharp teeth by the baffle plate after each biting action, so that the backward-moving shearing head can drive the bone fragments to move backwards synchronously through the backward-inclined sharp teeth, and then when the shearing head is reset, the bone fragments can be blocked by the lower sharp teeth until they enter the collection cavity, which can ensure that the bone rongeurs can complete several bone biting operations after entering the wound once, greatly improving the bone biting efficiency, and at the same time preventing the bone fragments from falling into the nasal cavity or the wound during repeated bone biting operations by the bone rongeurs to cause medical accidents, thereby reducing the risk of surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the front view of the present invention.

[0013] Figure 2 It is a front cross-sectional view of the present invention.

[0014] Figure 3 for Figure 2 A is an enlarged view of the middle image.

[0015] 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.

[0016] Figure 5 for Figure 4 Enlarged view of B.

[0017] Figure 6 It is a three-dimensional diagram of the shearing head of the present invention. DETAILED DESCRIPTION

[0018] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0019] Depend on Figures 1 to 6 The present invention comprises a horizontally placed horizontal bar 1, a shearing portion 2 is arranged at the left end of the horizontal bar 1, a hand-held portion 3 is arranged at the right end of the horizontal bar 1, the shearing portion 2 comprises a sink 4 with an opening facing upward, a shearing head 5 is arranged in the sink 4, the shearing head 5 can move horizontally along the axis direction of the horizontal bar 1, a collecting chamber 6 penetrating to the left end face is arranged on the lower end face of the shearing head 5, a push plate 7 is arranged on the left end face of the sink 4, and the lower end of the push plate 7 is hinged to the sink 4; The hand-held portion 3 includes a front handle 8 and a rear handle 9, and the rear handle 9 is fixedly connected to the cross bar 1. The front handle 8 is hinged to the cross bar 1. When the front handle 8 swings 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.

[0020] The right end of the cross bar 1 is provided with a clearance groove 10 which passes 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 cross bar 1 to the clearance groove 10, 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, 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 separates from the far rest end of the cam 12.

[0021] 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 arranged in the cross hole 13, a compression spring is arranged between the left end of the slider 14 and the cross hole 13, the compression spring makes the right end of the slider 14 extend out of the cross hole 13 and contact with 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 sink 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, the ventilation hole 16 is connected with the left end surface of the cross hole 13 through the inside of the cross bar 1, a bellows 17 is arranged in the countersink 15, and the two ends of the bellows 17 are respectively fixedly connected to the ventilation hole 16 and the push plate 7.

[0022] A shaft shoulder is arranged 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, so that the upper clamp rod 11 is always pushed to the right by the compression spring.

[0023] 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.

[0024] 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, and 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, and the right end of the cover plate 22 is provided with an L-shaped buckle 23. 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.

[0025] A circular ring 24 is fixed to the free ends of the front handle 8 and the rear handle 9 .

[0026] 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.

[0027] When the present invention is used, firstly, the hand-held part 3 is held by hand to pass the crossbar 1 through the nasal cavity so that the cutting part 2 is placed near the lesion, and the front handle 8 is located at the end away from the rear handle 9. Then, the cutting part 2 is moved to place the part to be cut between the sink groove 4 and the cutting head 5. Then, the front handle 8 is moved 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, thereby completing the bone biting operation. Then continue to rotate the front handle 8 in the direction of the rear handle 9, the cam 12 continues to rotate to make the slider 14 move inward along the transverse hole 13, the slider 14 compresses the cavity of the transverse hole 13 to allow the gas to enter the bellows 17 through the ventilation hole 16, and the bellows 17 expands and drives the push plate 7 to swing along the hinge axis to the inside of the sink groove 4, so that the sheared bone fragments can be moved between the sharp teeth 20 on the upper and lower sides; 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 baffle 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 tilted toward the collecting chamber 6, the broken bones 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 broken bones 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; After the bone biting operation is completed, the shearing part 2 is taken out from the nasal cavity, and then the cover plate 22 is manually opened through the buckle 23, so that the broken bones collected in the collecting cavity 6 can be discharged uniformly.

[0028] Compared with the prior art, the present invention has the following advantages: The present invention improves the shearing part of the existing bone rongeurs, so that the bitten bone fragments can be pushed backwards by the baffle 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 backwards synchronously through the backward-inclined sharp teeth 20, 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 collecting chamber 6, which can ensure that the bone rongeurs can complete several bone biting operations after entering the wound once, greatly improving the bone biting efficiency, and at the same time, can prevent the bone fragments from falling into the nasal cavity or the wound during repeated bone biting operations of the bone rongeurs to cause medical accidents, thereby reducing the risk of surgery; The cam 12 sequentially squeezes and pushes the upper clamp rod 11 and the slider 14 on the upper and lower sides during the rotation of the front handle 8, so that the shear head 5 can first complete the bone resection, and then the push plate 7 can push the bone fragments backward to ensure that the bone fragments can be stably pushed between the sharp teeth 20 without falling. The slider 14 is reset before the upper clamp rod 11, ensuring that before the shear head 5 performs the next bone biting operation, the push plate 7 is in the initial position and does not affect the bone biting operation; The slide plate 19 can move downward to make way, so that the bitten bone fragments can be smoothly moved 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 upwards, 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 hand-held portion (3) comprises a front handle (8) and a rear handle (9), the rear handle (9) and the cross bar (1) are fixedly connected, the front handle (8) and the cross bar (1) are hinged, when the front handle (8) swings in the direction of the rear handle (9), it can drive the shearing head (5) to move to the left until the left end surface of the shearing head (5) is in contact with the left end surface 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.

2. The ophthalmic surgery rongeur according to claim 1, characterized in that: The right end of the cross bar (1) is provided with a clearance groove (10) penetrating 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) penetrates the cross bar (1) to the clearance groove (10), 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 press the upper clamp rod (11) outward until the upper clamp rod (11) contacts the far rest end of the cam (12), the left end surface of the shearing head (5) is in contact with the left end surface 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).

3. The ophthalmic surgery rongeur according to claim 2, characterized in that: 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 arranged in the cross hole (13). A compression spring is arranged 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, the slider (14) can be driven to move leftward. The left end surface of the sink groove (4) is located at the left side of the push plate (7) and is provided with a countersunk hole (15). The left end surface of the countersunk hole (15) is provided with a ventilation hole (16). The ventilation hole (16) is connected with the left end surface of the cross hole (13) through the inside of the cross bar (1). A bellows (17) is arranged in the countersunk hole (15). The two ends of the bellows (17) are respectively fixedly connected to the ventilation hole (16) and the push plate (7).

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

5. The ophthalmic surgery rongeur according to claim 1, characterized in that: A blind hole (18) is provided on the left side of the lower end surface of the sink (4), and the ventilation hole (16) passes through the left and right end surfaces 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). A plurality of sharp teeth (20) are provided on the upper end surface of the slide plate (19) and the upper end surface of the collecting chamber (6), respectively, and the tips of all the sharp teeth (20) are inclined to the right.

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

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

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