Intranasal mucosa retractor

Abstract

The utility model discloses an intranasal mucosa tractor relates to the field of medical devices, including handle still includes two parallel axle stem, and two axle stems are by the inside rotation of end portion and enter handle, and the end portion of axle stem is connected with the traction piece through the bending part, and two traction pieces constitute the traction surface, and the surface rotation of handle is provided with the handle of twist, and the transmission part is connected between the handle of twist and two axle stems, and the handle of twist is driven two axle stems reverse rotation with the meshed mode, is used for adjusting the width of traction surface, the utility model discloses two bending in the traction piece of axle stem end portion constitutes the traction surface, and two axle stems synchronous reverse rotation are driven through the transmission part, drive two traction pieces and take place expansion or gather and swing, realize the width adjustment of traction surface, the width of traction surface is convenient for the width adaptability adjustment of intranasal incision and pulls the intranasal mucosa.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a nasal mucosa traction device. Background Technology

[0002] Nasal plastic surgeries such as septal cartilage harvesting and submucosal nasal bone reshaping are mostly performed through an intranasal incision approach. An incision is made inside the nostril to separate the nasal mucosa and expose the surgical area. The intranasal approach has the advantages of concealed incision and no impact on postoperative aesthetics. However, the narrow space inside the nose greatly limits the surgical field. Usually, after the intranasal incision, a traction device is needed to pull the cut nasal mucosa to expand the surgical field.

[0003] Currently, traction devices used in nasal mucosa generally use hook plates or bending plates, or even tongue depressors as alternatives. All of the above traction devices are fixed structures with a fixed width of the traction area. However, nasal incisions are arc-shaped, and the location and width of different surgical incisions vary. It is difficult for traction devices with fixed widths to adaptively adjust the traction area according to different incision conditions. Utility Model Content

[0004] The purpose of this invention is to provide an intranasal mucosal traction device to solve the problem that traditional fixed-width traction devices cannot adaptively adjust the traction area according to the width of the intranasal incision.

[0005] To address the problems existing in the prior art, the technical solution of this utility model is as follows: A nasal mucosal retractor includes a handle and two parallel shafts. The two shafts are rotatably inserted into the handle from their ends. The ends of the shafts are connected to traction plates via bends. The two traction plates form a traction surface. A torsion handle is rotatably provided on the surface of the handle. The torsion handle is connected to the two shafts via a transmission component. Rotating the torsion handle drives the two shafts to rotate in opposite directions in a meshing manner, which is used to adjust the width of the traction surface.

[0006] Preferably, the transmission component includes gears and double-sided gear plates. Gears are fixed to the surfaces of both shafts, and the double-sided gear plates are meshed between the two gears. A stud is coaxially fixed to the torsion handle, and a threaded hole is provided on the end face of the double-sided gear plate extending inward. The stud is threadedly connected to the threaded hole.

[0007] Preferably, the transmission component includes a worm gear and a worm, with the worm gear fixed to the surface of both shafts, and the torsion handle coaxially fixing the worm, which is meshed between the two worm gears.

[0008] Preferably, the middle part of the traction plate is smoothly bent towards the handle, the thickness of the end of the traction plate gradually decreases, the end and top corner of the traction plate are blunted and polished, and the bending angle of the bent part is 90°-120°.

[0009] Preferably, the handle is composed of two symmetrical parts, which are joined together and fixed with screws to form the handle, and the handle has a cavity inside.

[0010] Compared with related technologies, this utility model has the following beneficial effects: This invention uses two traction plates bent at the ends of shafts to form a traction surface. The two shafts are driven to rotate synchronously in opposite directions by a transmission component, which causes the two traction plates to expand or contract and swing, thereby adjusting the width of the traction surface. This allows for adaptive adjustment of the traction surface width to stretch the nasal mucosa according to the width of the intranasal incision. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model.

[0013] Figure 3 This is one of the schematic diagrams of the transmission component structure of this utility model.

[0014] Figure 4 This is the second schematic diagram of the transmission component structure of this utility model.

[0015] Figure 5 This is a schematic diagram of the shaft and traction plate structure of this utility model.

[0016] Reference numerals: 1. Handle; 11. Transmission cavity; 12. Cavity; 2. Shaft; 21. Bend; 3. Traction plate; 4. Torque handle; 5. Transmission component; 51. Gear; 52. Double-sided gear plate; 53. Screw hole; 54. Stud; 55. Worm gear; 56. Worm. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0018] The intranasal mucosal retractor has a handle 1, a shaft 2, a traction plate 3, and a transmission component 5; Example 1: As Figure 1 , Figure 2 As shown, the handle 1 is composed of two symmetrical parts. The two parts are attached together and fixed with screws to form the complete handle. The handle 1 is cylindrical in shape. The front end of the handle 1 gradually becomes flat. A cavity 12 is opened inside the handle 1 to reduce the weight of the handle 1.

[0019] The cross-section of the shaft 2 is circular. The two shafts 2 are distributed in parallel. The two parts of the handle 1 are disassembled. The two parts of the handle 1 have grooves to accommodate the shafts 2. The shafts 2 are placed in the grooves and the handle is fixed with screws. The end of the shaft 2 protrudes from the front end of the handle 1.

[0020] like Figure 5 As shown, the end of the shaft 2 is bent at 90°-120° to form a bent part 21. The shaft 2 is connected to the traction plate 3 through the bent part 21, so that the traction plate 3 and the shaft 2 have an angle. The traction plate 3 is a sheet with a thickness of about 1mm. The end and corner parts of the traction plate 3 are blunted and polished.

[0021] like Figure 3 As shown, the transmission component 5 includes a gear 51 and a double-sided toothed plate 52. A transmission cavity 11 is opened inside the handle 1. The shaft 2 passes through the transmission cavity 11. The surface of the shaft 2 is located inside the transmission cavity 11 and the gear 51 is fixed there. There is a gap between the two gears 51. The double-sided toothed plate 52 slides linearly in the transmission cavity 11. The double-sided toothed plate 52 passes between the two gears 51 and meshes with the two gears 51. The end face of the double-sided toothed plate 52 extends inward and opens a screw hole 53. A torsion handle 4 is rotatably installed on the surface of the handle 1. The torsion handle 4 is coaxially fixed with a stud 54. The stud 54 is threadedly connected to the screw hole 53.

[0022] Two traction plates 3 at the ends of the two shafts 2 form a traction surface. The size of the traction surface is adjusted according to the width of the nasal incision. The torsion handle 4 is manually turned so that the stud 54 pushes the double-sided toothed plate 52 to move linearly. Through meshing transmission, the gear 51 drives the two shafts 2 to rotate synchronously in opposite directions. The two traction plates 3 swing, so that the width of the traction surface is adjusted to the width of the incision. The traction surface is inserted into the inside of the separated nasal mucosa through the incision. The handle 1 is held and pulled to lift the traction surface to the side, exposing the surgical position and facilitating the operation.

[0023] The middle part of the traction piece 3 is smoothly bent towards the handle 1, which increases the expansion range of the traction piece 3 on the middle part of the nasal mucosa and also causes the traction piece 3 to slip off when it hooks the nasal mucosa.

[0024] The thickness of the end of the traction piece 3 gradually decreases, which facilitates the separation of the nasal mucosa through the end of the traction piece 3.

[0025] Example 2: The difference from Example 1 lies in the specific structure of the transmission component 5, such as... Figure 4 As shown, the transmission component 5 includes a worm gear 55 and a worm 56. The surfaces of the two shafts 2 are located inside the transmission cavity 11 and the worm gear 55 is fixed. There is a gap between the two worm gears 55. The surface of the handle 1 is rotatably mounted with a torsion handle 4. The torsion handle 4 is coaxially fixed with the worm 56. The worm 56 is inserted between the two worm gears 55 and meshes with the two worm gears 55. By rotating the torsion handle 4, the worm gear 56 is driven to rotate. Through meshing transmission, the two worm wheels 55 drive the two shafts 2 to rotate synchronously in opposite directions. The two traction plates 3 swing, so that the width of the traction surface is adjusted to a suitable width for the cut.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nasal mucosal retractor, comprising: The handle (1) is characterized in that it further includes two parallel shafts (2), which are inserted into the interior of the handle (1) by rotation from their ends. The ends of the shafts (2) are connected to traction plates (3) through bending parts (21). The two traction plates (3) form a traction surface. A torsion handle (4) is rotatably provided on the surface of the handle (1). The torsion handle (4) is connected to the two shafts (2) through a transmission member (5). Rotating the torsion handle (4) drives the two shafts (2) to rotate in opposite directions in a meshing manner, which is used to adjust the width of the traction surface.

2. The nasal mucosa retractor according to claim 1, characterized in that, The transmission component (5) includes a gear (51) and a double-sided gear plate (52). The gear (51) is fixed on the surface of both shafts (2). The double-sided gear plate (52) is meshed between the two gears (51). The torsion handle (4) is coaxially fixed with a stud (54). The end face of the double-sided gear plate (52) extends inward and has a screw hole (53). The stud (54) is threadedly connected to the screw hole (53).

3. The nasal mucosa retractor according to claim 1, characterized in that, The transmission component (5) includes a worm wheel (55) and a worm (56). The surfaces of the two shafts (2) are fixed with the worm wheel (55). The torsion handle (4) is coaxially fixed with the worm (56). The worm (56) is meshed between the two worm wheels (55).

4. The nasal mucosal retractor according to claim 1, characterized in that, The middle part of the traction plate (3) is smoothly bent towards the handle (1).

5. The nasal mucosal retractor according to claim 1, characterized in that, The thickness of the end of the traction piece (3) gradually decreases, and the end and apex of the traction piece (3) are dulled and polished.

6. The nasal mucosal retractor according to claim 1, characterized in that, The bending angle of the bent portion (21) is 90°-120°.

7. The nasal mucosal retractor according to claim 1, characterized in that, The handle (1) is composed of two symmetrical parts, which are fixed together by screws to form the handle (1).

8. The nasal mucosal retractor according to claim 1, characterized in that, The handle (1) has a cavity (12) inside.

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