A cochlear flap retractor

Abstract

The application discloses a cochlea flap expander, which comprises an expander assembly, a first supporting piece and a second supporting piece; the expander assembly is provided with an operation end, a first movable end and a second movable end; the first supporting piece and the second supporting piece are connected with the first movable end and the second movable end respectively; the first supporting piece and the second supporting piece can be embedded or separated from each other; the operation end of the expander assembly is provided with an angle keeping assembly, which is used for keeping the distance between the first supporting piece and the second supporting piece. The cochlea flap expander can be adapted to different types of cochlear implantation operations and can replace artificial traction.

Description

Technical Field

[0001] This invention relates to the field of cochlear implantation technology, and in particular to a cochlear flap expander. Background Technology

[0002] Cochlear implantation surgery requires creating a bone groove in the skull. However, current cochlear implantation procedures are primarily minimally invasive, with small incisions that make it difficult to create the necessary bone groove. Therefore, at the site of the incision exposing the skull, a temporal flap needs to be pulled to increase the exposed area of ​​the skull, facilitating the creation of the bone groove. Current cochlear implantation procedures typically use ordinary retractors to pull the flap, but due to the small incision, pulling the flap is laborious and can easily lead to insufficient exposure of the skull, making the creation of the bone groove more difficult. Using ordinary retractors to pull the flap requires a dedicated person to operate on it, and the flap must be kept under tension throughout the procedure before cochlear implantation, which is labor-intensive. Summary of the Invention

[0003] The technical problem to be solved by this invention is to provide a cochlear flap expander that reduces the difficulty of fabricating the bone groove.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] A cochlear flap retractor includes a retractor assembly, a first support member, and a second support member. The retractor assembly has an operating end, a first movable end, and a second movable end. The first support member and the second support member are respectively connected to the first movable end and the second movable end, and the first support member and the second support member can be engaged or disengaged. The operating end of the retractor assembly is provided with an angle-holding component, which is used to maintain the distance between the first support member and the second support member.

[0006] Furthermore, when the first support member and the second support member are fitted together, they form a support structure in the shape of a quarter ellipsoid.

[0007] Furthermore, the height of the support structure gradually decreases along the direction from the first movable end to the operating end.

[0008] Furthermore, the highest points of the first support member and the second support member are respectively connected to the first movable end and the second movable end.

[0009] Furthermore, the maximum width of the support structure is 2.5cm to 3.5cm.

[0010] Furthermore, the length of the support structure is 3cm to 4cm.

[0011] Furthermore, the spreading assembly includes a first movable member and a second movable member; the first movable member and the second movable member are hinged together, the first movable member is connected to the first support member through a first extension, and the second movable member is connected to the second support member through a second extension.

[0012] Furthermore, a first angle of 80° to 100° is formed between the first extension and the first movable member; a second angle of 80° to 100° is formed between the second extension and the second movable member.

[0013] Furthermore, the angle holding assembly includes an adjusting part and a limiting part; the adjusting part is connected to the first movable member at a position away from the first movable end; the limiting part is hinged to the second movable member at a position away from the second movable end; the adjusting part passes through the second movable member and engages with the limiting part.

[0014] Furthermore, the limiting part includes a toothed part, a pressing part, and an elastic reset part; the toothed part is hinged to the second movable member, the pressing part is connected to the side of the toothed part away from the second movable member and extends in a direction away from the second movable member; one end of the elastic reset part is connected to the side of the second movable member facing the first movable member, and the other end of the elastic reset part is connected to the toothed part.

[0015] The beneficial effects of this invention are as follows: This invention provides a first support member and a second support member to support the flap during cochlear implantation surgery. At the same time, it provides a spreading component so that the first support member and the second support member set on the spreading component can separate or interlock with each other, thereby simulating the action of a person holding a regular retractor to pull the flap open quickly. Then, through an angle holding component, the opening angle of the spreading component is maintained, thereby replacing manual pulling of the flap and ensuring that the flap can be kept open throughout the operation, reducing the difficulty of fabricating the bone groove. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the cochlear flap expander of the present invention (with the first support and the second support interlocked). Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the cochlear flap expander of the present invention (with the first support and the second support interlocked). Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the cochlear flap expander of the present invention (with the first support and the second support separated from each other);

[0019] Figure 4 for Figure 1 Side view.

[0020] Label Explanation:

[0021] 1. Spreading component; 11. Operating end; 12. First movable end; 13. Second movable end; 14. First movable component; 15. Second movable component; 16. First extension; 17. Second extension;

[0022] 2. First support component; 3. Second support component; 4. Support structure;

[0023] 5. Angle holding assembly; 51. Adjustment part; 52. Limiting part; 521. Toothed part; 522. Pressing part; 523. Elastic reset part. Detailed Implementation

[0024] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0025] Please refer to Figures 1-4 A cochlear flap retractor includes a retractor assembly 1, a first support member 2, and a second support member 3. The retractor assembly 1 has an operating end 11, a first movable end 12, and a second movable end 13. The first support member 2 and the second support member 3 are respectively connected to the first movable end 12 and the second movable end 13, and the first support member 2 and the second support member 3 can be engaged or disengaged from each other. The operating end 11 of the retractor assembly 1 is provided with an angle holding component 5, which is used to maintain the distance between the first support member 2 and the second support member 3.

[0026] It is understood that the present invention uses a first support member 2 and a second support member 3 to support the flap during cochlear implantation surgery. At the same time, a spreading component 1 is provided so that the first support member 2 and the second support member 3 set on the spreading component 1 can separate or interlock with each other, thereby simulating the action of a person holding a regular retractor to pull the flap open quickly. Then, the angle holding component 5 is used to maintain the opening angle of the spreading component 1, thereby replacing manual pulling of the flap and ensuring that the flap can be kept open throughout the operation, reducing the difficulty of fabricating the bone groove.

[0027] In some embodiments, when the first support member 2 and the second support member 3 are fitted together, they form a quarter-ellipsoidal support structure 4. This structure serves two purposes: firstly, to expand the skin flap, and secondly, to maintain a certain space between the skin flap and the skull, facilitating the fabrication of the bone groove. Because the support structure 4 is ellipsoidal, it can accommodate implants of different sizes, thus increasing its versatility. Furthermore, since the support structure 4 is quarter-ellipsoidal and the spacing between the first support member 2 and the second support member 3 is adjustable, the expander can be adapted to cochlear implants of different sizes, further enhancing its versatility. Specifically, the first support member 2 and the second support member 3 have a fitting structure.

[0028] In some embodiments, the height of the support structure 4 gradually decreases along the direction from the first movable end 12 to the operating end 11, which better conforms to the curvature of the skull.

[0029] In some embodiments, the highest points of the first support member 2 and the second support member 3 are connected to the first movable end 12 and the second movable end 13, respectively, to avoid interference between the first support member 2 and the second support member 3 during the fabrication of the bone groove. Further, the planes on the sides of the first support member 2 and the second support member 3 away from the spreading component 1 are parallel to the plane of the spreading component 1. The highest point of the first support member 2 and the second support member 3 refers to the position where the height of the first support member 2 and the second support member 3 is the greatest.

[0030] In some embodiments, the maximum width of the support structure 4 is 2.5cm to 3.5cm. Preferably, the maximum width of the support structure 4 is 3cm.

[0031] In some embodiments, the length of the support structure 4 is 3cm to 4cm. Preferably, the length of the support structure 4 is 4cm.

[0032] In some embodiments, the spreading assembly 1 includes a first movable member 14 and a second movable member 15; the first movable member 14 and the second movable member 15 are hinged together, the first movable member 14 is connected to the first support member 2 via a first extension 16, and the second movable member 15 is connected to the second support member 3 via a second extension 17. The first extension 16 and the second extension 17 are provided such that a clearance space for accommodating the flap is formed between the first support member 2 and the second support member 3 and the first movable member 14 and the second movable member 15, facilitating operation.

[0033] In some embodiments, a first angle of 80° to 100° is formed between the first extension 16 and the first movable member 14; a second angle of 80° to 100° is formed between the second extension 17 and the second movable member 15. Preferably, both the first angle and the second angle are 90 degrees.

[0034] In some embodiments, the angle holding assembly 5 includes an adjusting portion 51 and a limiting portion 52; the adjusting portion 51 is connected to the first movable member 14 at a position away from the first movable end 12; the limiting portion 52 is hinged to the second movable member 15 at a position away from the second movable end 13; the adjusting portion 51 passes through the second movable member 15 and engages with the limiting portion 52. Through the cooperation of the adjusting portion 51 and the limiting portion 52, the distance between the first movable member 14 and the second movable member 15 is maintained, ensuring the smooth progress of the surgery, and compared with the prior art, it can completely replace manual traction of the skin flap. Preferably, the adjusting portion 51 is an arc-shaped rack, and the central side of the adjusting portion 51 is located on the side closer to the first movable end 12 and the second movable end 13.

[0035] In some embodiments, the limiting portion 52 includes a toothed portion 521, a pressing portion 522, and an elastic reset portion 523. The toothed portion 521 is hinged to the second movable member 15, and the pressing portion 522 is connected to the side of the toothed portion 521 away from the second movable member 15 and extends in a direction away from the second movable member 15. One end of the elastic reset portion 523 is connected to the side of the second movable member 15 facing the first movable member 14, and the other end of the elastic reset portion 523 is connected to the toothed portion 521. The toothed portion 521 is used to cooperate with the adjusting portion 51, thereby maintaining the relative position between the adjusting portion 51 and the second movable member 15. The pressing portion 522 is provided to facilitate changing the meshing relationship between the toothed portion 521 and the adjusting portion 51, making operation easier. The elastic reset portion 523 is provided to drive the toothed portion 521 to reset, thereby maintaining a stable positional relationship between the toothed portion 521 and the adjusting portion 51.

[0036] Embodiment 1 of the present invention is as follows:

[0037] A cochlear flap retractor includes a retractor assembly 1, a first support member 2, and a second support member 3. The retractor assembly 1 has an operating end 11, a first movable end 12, and a second movable end 13. The first support member 2 and the second support member 3 are respectively connected to the first movable end 12 and the second movable end 13, and the first support member 2 and the second support member 3 can be engaged or disengaged from each other. The operating end 11 of the retractor assembly 1 is provided with an angle holding component 5, which is used to maintain the distance between the first support member 2 and the second support member 3.

[0038] In this embodiment, when the first support member 2 and the second support member 3 are fitted together, they form a support structure 4 in the shape of a quarter ellipsoid; the height of the support structure 4 gradually decreases along the direction from the first movable end 12 to the operating end 11; the highest points of the first support member 2 and the second support member 3 are respectively connected to the first movable end 12 and the second movable end 13.

[0039] In this embodiment, the spreading assembly 1 includes a first movable member 14 and a second movable member 15; the first movable member 14 and the second movable member 15 are hinged together, the first movable member 14 is connected to the first support member 2 through a first extension 16, and the second movable member 15 is connected to the second support member 3 through a second extension 17. A first angle of 90° is formed between the first extension 16 and the first movable member 14; a second angle of 90° is formed between the second extension 17 and the second movable member 15.

[0040] In this embodiment, the angle holding assembly 5 includes an adjusting part 51 and a limiting part 52; the adjusting part 51 is connected to the first movable member 14 at a position away from the first movable end 12; the limiting part 52 is hinged to the second movable member 15 at a position away from the second movable end 13; the adjusting part 51 passes through the second movable member 15 and engages with the limiting part 52. Preferably, the adjusting part 51 is an arc-shaped rack, and the center side of the adjusting part 51 is located on the side closer to the first movable end 12 and the second movable end 13.

[0041] In this embodiment, the limiting part 52 includes a toothed part 521, a pressing part 522, and an elastic reset part 523. The toothed part 521 is hinged to the second movable member 15, and the pressing part 522 is connected to the side of the toothed part 521 away from the second movable member 15 and extends in a direction away from the second movable member 15. One end of the elastic reset part 523 is connected to the side of the second movable member 15 facing the first movable member 14, and the other end of the elastic reset part 523 is connected to the toothed part 521. Preferably, the elastic reset part 523 is a metal spring.

[0042] The working principle of this invention is as follows:

[0043] The support structure 4 is inserted into the incision. The distance between the first support member 2 and the second support member 3 is controlled and maintained by the angle holding component 5 according to the size of the implanted implant.

[0044] The space formed between the first support member 2 and the second support member 3 is used for creating the bone groove and placing the implant.

[0045] It is worth noting that during the use of this cochlear flap retractor, the retractor component 1 is always kept in a horizontal or nearly horizontal state.

[0046] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A cochlear flap retractor, characterized in that, Includes a spreading component, a first support member, and a second support member; The spreading component has an operating end, a first movable end and a second movable end. The first support member and the second support member are respectively connected to the first movable end and the second movable end, and the first support member and the second support member can be fitted together or separated from each other. The operating end of the spreading component is provided with an angle holding component, which is used to maintain the distance between the first support member and the second support member. When the first support member and the second support member are fitted together, they form a support structure in the shape of a quarter ellipsoid. The height of the support structure gradually decreases along the direction from the first movable end to the operating end; The highest points of the first support member and the second support member are respectively connected to the first movable end and the second movable end.

2. The cochlear flap retractor according to claim 1, characterized in that, The maximum width of the support structure is 2.5cm to 3.5cm.

3. The cochlear flap retractor according to claim 1, characterized in that, The length of the support structure is 3cm to 4cm.

4. The cochlear flap retractor according to claim 1, characterized in that, The expansion assembly includes a first movable component and a second movable component; The first movable member is hinged to the second movable member, the first movable member is connected to the first support member through a first extension, and the second movable member is connected to the second support member through a second extension.

5. A cochlear flap retractor according to claim 4, characterized in that, The first extension and the first movable member form a first included angle of 80° to 100°. The second extension and the second movable member form a second included angle of 80° to 100°.

6. A cochlear flap retractor according to claim 4, characterized in that, The angle holding component includes an adjustment part and a limiting part; The adjustment part is connected to the first movable member at a position away from the first movable end; The limiting part is hinged to the position of the second movable member away from the second movable end; The adjusting part passes through the second movable member and engages with the limiting part.

7. A cochlear flap retractor according to claim 6, characterized in that, The limiting part includes a toothed part, a pressing part, and an elastic reset part; The toothed portion is hinged to the second movable member, and the pressing portion is connected to the side of the toothed portion away from the second movable member and extends in a direction away from the second movable member; One end of the elastic reset part is connected to the side of the second movable member facing the first movable member, and the other end of the elastic reset part is connected to the toothed part.

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