CN217310634U - Gingival flap drag hook - Google Patents

Abstract

A gingival flap retractor comprises a connecting rod and a traction arm, wherein one end of the connecting rod is provided with a handle which forms a certain included angle with the connecting rod, the other end of the connecting rod is symmetrically hinged with a pair of traction arms, an angle adjuster used for adjusting the angle formed by the two traction arms is arranged on the connecting rod, the tail ends of the two traction arms are rotatably provided with cutting edges, and a limiter capable of limiting the positions of the cutting edges is arranged in the traction arm. The utility model utilizes the two cutting edges to draw the gingival flap at the proper position, enlarges the operation visual field and avoids the injury of the gingival flap at the buccal side and the buccal mucosa; the opening angles of the two traction arms can be adjusted, so that the device is suitable for different gum flap operation coverage ranges; the two cutting feet can be adjusted by rotation on the traction arm, so that the gingival flap retractor can be widely applied to different patients.

Description

Gingival flap retractor

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a gingival flap drag hook.

Background

The gingival flap is an operation of cutting the gingiva with a scalpel blade and separating a gingival flap, which is composed of gingiva, a mucous membrane, a periosteum and the like, from a jawbone and an alveolar bone with a stripper, and is commonly used in clinical procedures such as wisdom tooth extraction, periodontal surgery, periapical surgery, jaw cyst surgery, gingivitis removal and the like. After the gingival flap is turned over, the gingival flap needs to be pulled away continuously to expose the surgical field for convenient operation and protect the gingival flap and the surrounding important structures from being damaged. At present, a traditional stripper is usually used for pulling a gingival flap during oral clinical operation, and because an action end of the traditional stripper is relatively sharp and forms point-like contact (only one fulcrum) with a bone surface, the traditional stripper is easy to slide, not only can cause soft tissue injury, but also can possibly interfere with an operation process, increase the probability of postoperative soft tissue swelling and bring certain pain to a patient; moreover, the traditional dissector has limited traction range, which results in insufficient exposure of the operation area, limited operation space and prolonged operation time, which inevitably increases the operation difficulty of the operator.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the utility model provides a gingival flap drag hook, concrete technical scheme is:

a gingival flap retractor comprises a connecting rod and a traction arm, wherein one end of the connecting rod is provided with a handle which forms a certain included angle with the connecting rod, the other end of the connecting rod is symmetrically hinged with a pair of traction arms, an angle adjuster used for adjusting the angle formed by the two traction arms is arranged on the connecting rod, the tail ends of the two traction arms are rotatably provided with cutting edges, and a limiter capable of limiting the positions of the cutting edges is arranged in the traction arm.

Furthermore, the angle adjuster comprises a control box arranged at the tail end of the connecting rod and motors arranged in the control box, the two traction arms are symmetrically hinged to two sides of the end face of the control box, an angle adjusting box is arranged in the middle of the end face of the control box, a rotating gear extending into the angle adjusting box is arranged at the driving end of each motor, a threaded sleeve is arranged in the angle adjusting box through a bearing, a driving gear meshed with the rotating gear is arranged on the outer wall of the threaded sleeve, screw rods are connected to two ends of the threaded sleeve in a threaded manner, a key block used for limiting the rotation of the screw rods is arranged on the angle adjusting box, elastic deformation rods are arranged at the outer ends of the two threads, and the outer ends of the two deformation rods are connected to the two traction arms respectively.

Furthermore, the limiting device comprises a limiting pin and a limiting gear, rotating shafts capable of rotating in the traction arm are arranged on two sides of the front end of the blade foot, the limiting gear is arranged on the outer ring of the rotating shafts, a limiting groove communicated with the limiting gear is formed in the traction arm, a pressure spring is arranged in the limiting groove, one end of the limiting pin is connected with the pressure spring, and the other end of the limiting pin is inserted into a gear tooth gap of the limiting gear; the side of the traction arm is provided with an operation groove communicated with the limiting groove, and an operation rod connected to the limiting pin is arranged in the operation groove.

Furthermore, one side of the tail end of the traction arm is provided with angle scales.

Further, the included angle formed by the connecting rod and the handle is 120-135 degrees.

Furthermore, anti-slip strips are uniformly arranged on the front side and the back side of the blade foot.

The utility model has the advantages that:

(1) the gingival flap is pulled at a proper position by the two cutting feet, the operation visual field is expanded, and the gingival flap on the buccal side and the buccal mucosa are prevented from being damaged;

(2) the opening angles of the two traction arms can be adjusted, so that the device is suitable for different gum flap operation coverage ranges;

(3) in the operation, the positive and negative rotation of the motor is controlled to adjust the opening angles of the two traction arms, and the range of the two cutting edges for dragging the gingival flap is adjusted in time, so that the continuity of the gingival flap surgery is ensured;

(4) the two cutting feet can be adjusted by rotation on the traction arm, so that the gingival flap retractor is suitable for the traction of gingiva at different positions, and the gingival flap retractor can be widely suitable for different patients.

Drawings

Fig. 1 is an overall schematic view of the present invention.

Fig. 2 is the schematic plan view of the angle adjuster of the present invention.

Fig. 3 is a schematic partial cross-sectional view of the stopper in an initial state according to the present invention.

Fig. 4 is a schematic partial sectional view of the stopper of the present invention during operation.

In the figure: the angle adjuster comprises a connecting rod 1, a traction arm 2, a handle 3, a blade foot 4, an angle adjuster 5, a control box 51, a motor 511, a rotating gear 512, a battery box 513, a bearing 514, an angle adjusting box 52, a threaded sleeve 521, a driving gear 522, a screw 523, a deformed rod 524, a key block 525, a limiter 6, a rotating shaft 61, a limit gear 62, a rotating groove 63, a limit pin 64, a pressure spring 65, an operating groove 66, an operating rod 67, an anti-slip strip 7 and a control switch 8.

Detailed Description

The invention will be further described with reference to the following drawings and specific embodiments:

as shown in fig. 1 to 4, the gingival flap retractor comprises a connecting rod 1 and a traction arm 2, wherein one end of the connecting rod 1 is provided with a handle 3 forming a certain included angle with the connecting rod, the other end of the connecting rod is symmetrically hinged with a pair of traction arms 2, the connecting rod 1 is provided with an angle adjuster 5 for adjusting the angle formed by the two traction arms 2, the tail ends of the two traction arms 2 are both rotatably provided with a blade foot 4, and the traction arm 2 is internally provided with a stopper 6 capable of limiting the position of the blade foot 4.

Preferably, the included angle formed by the connecting rod 1 and the grip 3 is 120-135 degrees, so that the medical care personnel can operate the medical care device conveniently; the grip 3 is wrapped with an anti-slip gasket to avoid fatigue slippage when the traction action is kept for a long time.

As shown in fig. 1 and 2, the angle adjuster 5 includes a control box 51 mounted at the tail end of the connecting rod 1 and a motor 511 mounted in the control box 51, the two pulling arms 2 are symmetrically hinged to two sides of the end surface of the control box 51, an angle adjusting box 52 is disposed in the middle of the end surface of the control box 51, and a driving end of the motor 511 is provided with a rotating gear 512 extending into the angle adjusting box 52; the angle adjusting box 52 is internally provided with a threaded sleeve 521 through a bearing 514, the outer wall of the threaded sleeve 521 is provided with a driving gear 522 meshed with the rotating gear 512, two ends of the threaded sleeve 521 are both connected with a screw 523 in a threaded manner, the angle adjusting box 52 is provided with a key block 525 for limiting the rotation of the screw 523, the outer ends of the two threads are both provided with elastic deformation rods 524, and the outer ends of the two deformation rods 524 are respectively connected to the two traction arms 2.

Specifically, a battery box 513 electrically connected with a motor 511 is arranged in the connecting rod 1 close to the control box 51, and a dry battery or a rechargeable battery is arranged in the battery box 513; the motor 511 can rotate forwards and backwards, and the tail end of the driving end of the motor 511 is arranged on the inner wall of the control box 51 through a bearing 514; both ends of the threaded sleeve 521 are provided with bearings 514 mounted to the inner wall of the angle-adjusting box 52, so that the driving gear 522 and the rotating gear 512 are stably rotated in mesh.

Key grooves matched with the key blocks 525 are formed in the screw rods 523, and the key blocks 525 can slide in the key grooves; when the rotating gear 512 drives the driving gear 522 to rotate, the threaded sleeve 521 rotates along with the rotating gear, and the key block 525 limits the rotation of the screw 523, so that the screw 523 can only move horizontally. Because the deformation rod 524 has elasticity, under the thrust action of the screw 523, the deformation rod 524 bends and deforms, and synchronously pushes the two traction arms 2 to expand outwards; on the contrary, the two traction arms 2 are pulled to approach each other synchronously, so that the opening angle of the two traction arms 2 is adjusted to adapt to gingival flaps in different ranges.

Preferably, the deformation rod 524 is made of a highly elastic rubber, so that it can be adapted by bending deformation of itself.

Two control switches 8 for controlling the motor 511 to rotate forwards and backwards are arranged on the handle 3, the motor 511 continuously operates when the control switches 8 are continuously pressed, and the motor 511 stops when the control switches 8 are loosened, so that the opening angles of the two traction arms 2 can be conveniently realized in the operation.

As shown in fig. 3 and 4, the stopper 6 includes a stopper pin 64 and a stopper gear 62, both sides of the front end of the blade 4 are provided with a rotating shaft 61 capable of rotating in the pulling arm 2, the stopper gear 62 is arranged on the outer ring of the rotating shaft 61, and a rotating groove 63 matched with the rotating shaft 61 and the stopper gear 62 is arranged in the pulling arm 2, so that the blade 4 can rotate around the rotating shaft 61; a limiting groove communicated with the rotating groove 63 is formed in the traction arm 2, a pressure spring 65 is arranged in the limiting groove, one end of the limiting pin 64 is connected with the pressure spring 65, and the other end of the limiting pin is inserted into a gear tooth gap of the limiting gear 62; an operation groove 66 communicated with the limiting groove is formed in the side face of the traction arm 2, and an operation rod 67 connected to the limiting pin 64 is arranged in the operation groove 66.

Specifically, the lower end of the limit pin 64 is matched with the gap between two gear teeth of the limit gear 62, and the initial position of the lower end of the limit pin 64 is inserted into the gap between the two gear teeth by the elastic force of the pressure spring 65, so that the limit gear 62 is prevented from rotating and is not easy to shake. The lower part of the outer end of the operating rod 67 is provided with a notch, so that the operating rod 67 can be conveniently pushed upwards by fingers; when the operating rod 67 pushes up, the limit pin 64 moves upwards and the lower end thereof moves out of the gap between the two wheel teeth, so that the blade foot 4 can rotate around the rotating shaft 61; when the cutter blade is rotated to a proper angle, the operating lever 67 is released, and the stopper pin 64 is inserted into both teeth of the stopper gear 62 again by the elastic force of the spring, thereby locking the position of the cutter blade 4.

In a preferred embodiment, the end of the traction arm 2 is provided with an angle scale on one side, so as to indicate that the two blade feet 4 are inclined at the same angle.

The front side and the back side of the blade foot 4 are uniformly provided with the anti-slip strips 7 so as to increase the contact area of the blade foot 4 and the bone surface and improve the stability of the traction process.

When in use, according to the range of the gingival flap operation, the motor 511 is started to adjust the opening range of the two traction arms 2 by using the control switch 8, and the angle of the blade foot 4 is rotated and locked; the gingiva is cut open, the gingiva, the mucous membrane and the periosteum are separated, and the gingival flap is pulled from a proper position by using the two cutting edges 4, so that the operation visual field is expanded, and the gingival flap on the buccal side and the buccal mucous membrane are prevented from being damaged.

Claims (6)

1. A gingival flap drag hook is characterized in that: the angle adjusting device comprises a connecting rod and a traction arm, wherein a handle forming a certain included angle with the connecting rod is arranged at one end of the connecting rod, a pair of traction arms is symmetrically hinged to the other end of the connecting rod, an angle adjuster used for adjusting the angle formed by the two traction arms is arranged on the connecting rod, blade feet are rotatably arranged at the tail ends of the two traction arms, and a stopper capable of limiting the positions of the blade feet is arranged in the traction arm.

2. The gingival flap retractor according to claim 1, wherein: the angle adjuster comprises a control box arranged at the tail end of the connecting rod and a motor arranged in the control box, wherein the two traction arms are symmetrically hinged to two sides of the end face of the control box, an angle adjusting box is arranged in the middle of the end face of the control box, a driving gear extending into the angle adjusting box is arranged at the driving end of the motor, a threaded sleeve is arranged in the angle adjusting box through a bearing, a driving gear meshed with the driving gear is arranged on the outer wall of the threaded sleeve, threaded rods are connected to two ends of the threaded sleeve in a threaded manner, a key block used for limiting the rotation of the threaded rods is arranged on the angle adjusting box, elastic deformation rods are arranged at the outer ends of the two threaded rods, and the outer ends of the two deformation rods are respectively connected to the two traction arms.

3. The gingival flap retractor according to claim 1, wherein: the limiting device comprises a limiting pin and a limiting gear, rotating shafts capable of rotating in the traction arm are arranged on two sides of the front end of the blade foot, the limiting gear is arranged on the outer ring of the rotating shafts, a limiting groove communicated with the limiting gear is formed in the traction arm, a pressure spring is arranged in the limiting groove, one end of the limiting pin is connected with the pressure spring, and the other end of the limiting pin is inserted into a gear tooth gap of the limiting gear; the side of the traction arm is provided with an operation groove communicated with the limiting groove, and an operation rod connected to the limiting pin is arranged in the operation groove.

4. The gingival flap retractor according to claim 3, wherein: and angle scales are arranged on one side of the tail end of the traction arm.

5. The gingival flap retractor according to claim 1, wherein: the included angle formed by the connecting rod and the handle is 120-135 degrees.

6. The gingival flap retractor according to claim 1, wherein: and anti-slip strips are uniformly arranged on the front and back surfaces of the blade foot.

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