An adaptive baseplate hearing ossicle prosthesis

Abstract

The present application relates to the technical field of ossicle prosthesis. An adaptive base plate ossicle prosthesis comprises a base plate structure for connecting with a tympanic membrane and a stem, the base plate structure is fixedly connected with the stem, the base plate structure comprises a connecting part for connecting with the stem and at least six adaptive adjusting branches; all the adaptive adjusting branches are distributed at equal interval angles in a circumferential direction, and the inner sides of all the adaptive adjusting branches are fixedly connected with the outer side of the connecting part; gaps exist between all the adaptive adjusting branches. The present application is convenient for meeting the structure of the tympanic membrane and improving the fitting stability with the tympanic membrane through the adaptive adjusting branches. The independent adaptive adjusting branches will deform according to different regions of the tympanic membrane, so as to adapt to the structure of the tympanic membrane.

Description

Technical Field

[0001] This invention relates to the field of prosthesis technology, specifically to ossicular prostheses. Background Technology

[0002] Currently, the shapes and structures of the base plates of traditional total and partial ossicular replacement prostheses that fit the tympanic membrane vary, but they are basically rigid discs that fit onto the soft tympanic membrane. Although the surgeon can fit the tympanic membrane tightly to the rigid base plate during the operation, the base plate often fails due to tilting at a certain angle during postoperative recovery and sound transmission. At the same time, when sound passes through the tympanic membrane and vibrates, the tympanic membrane has an irregular structure at the microscopic level, so the sound transmission in different areas varies when vibration occurs.

[0003] Currently, there is a lack of ossicular prostheses that can adaptively fit the tympanic membrane structure. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides an adaptive chassis ossicle prosthesis, which solves at least one of the above-mentioned technical problems.

[0005] The technical solution of the present invention is: an adaptive chassis ossicle prosthesis, comprising a chassis structure for connecting the tympanic membrane and a rod, wherein the chassis structure is fixedly connected to the rod, characterized in that the chassis structure includes a connecting part for connecting the rod and at least six adaptive adjustment branches;

[0006] All adaptive adjustment branches are circumferentially spaced at equal angles, and the inner side of all adaptive adjustment branches is fixedly connected to the outer side of the connecting part;

[0007] There are gaps between all the adaptive adjustment branches.

[0008] This invention facilitates adaptive adjustment of branches to meet the tympanic membrane structure and improves the stability of the fit with the tympanic membrane.

[0009] Independent adaptive adjustment branches deform according to different areas of the tympanic membrane, thereby adapting to the tympanic membrane structure.

[0010] As a preferred embodiment, the adaptive adjustment branch includes an inner extension, a serpentine bend, and an edge extension connected in sequence;

[0011] Both the inner extension and the edge extension extend radially.

[0012] The inner extension and the edge extension are radially arranged inside and outside;

[0013] The width of the edge extension increases radially from the inside to the outside.

[0014] The thickness of the adaptive adjustment branch is equal along its axial direction.

[0015] When fitted to the tympanic membrane, each adaptive adjustment branch can adapt to the uneven shape of the tympanic membrane. Softer tympanic membranes will enter the gaps between the adaptive adjustment branches and the gaps in the serpentine bends. For harder tympanic membranes, the adaptive adjustment branches will deform according to different areas of the tympanic membrane, thus adapting to the tympanic membrane structure. During postoperative recovery, these adaptive adjustment branches with more gaps further promote endothelialization of the tympanic membrane and the prosthesis.

[0016] As another preferred embodiment, the adaptive adjustment branch is an extension structure with a hollow hole, the hollow hole being a through hole that is set along the length direction of the extension structure and is interconnected, and the two ends of the through hole are open in the axial direction.

[0017] The wall thickness is uniform at the through holes in the extended structure.

[0018] Compared to the serpentine bend, this design offers greater rigidity and is suitable for thicker tympanic membranes or when additional tissue patches are placed on the tympanic membrane. For postoperative recovery, the adaptive adjustment of the branches promotes endothelialization of the chassis and tympanic membrane. During sound transmission in the prosthesis, the soft tympanic membrane conforms to the various structural parts of the chassis to the greatest extent possible. Therefore, minute vibrations transmitted from the outer ear to the tympanic membrane can be transmitted to the inner ear through the prosthesis, greatly improving the sound transmission performance of the prosthesis.

[0019] More preferably, the cross-section of the through hole is a polygonal structure.

[0020] More preferably, the cross-section of the through hole is rhomboid.

[0021] As another preferred embodiment, the adaptive adjustment branch includes an inner adjustment part and an outer adjustment part disposed inside and outside, with a gap between the inner adjustment part and the outer adjustment part.

[0022] More preferably, the internal adjustment section includes an extension piece and an extension block connected in a radial sequence;

[0023] The extension block is teardrop-shaped;

[0024] The outer adjustment part is arranged around the outer contour of the inner adjustment part. The outer adjustment part has an open perimeter structure. The open end of the perimeter structure is fixedly connected to the connecting part and forms a space to accommodate the inner adjustment part. The inner side of the inner adjustment part is fixedly connected to the connecting part.

[0025] In this design, the internal adjustment section provides rigidity, ensuring that the chassis structure remains perpendicular to the rod and does not deform, while the external adjustment section deforms appropriately to accommodate different shapes of the tympanic membrane and deformations during surgery.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] This invention provides a closer fit to the tympanic membrane and enables the conduction of tympanic membrane vibrations over a wider range. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a specific embodiment 1 of the present invention;

[0029] Figure 2 This is a schematic diagram of a specific embodiment 2 of the present invention;

[0030] Figure 3 This is a schematic diagram of a specific embodiment 3 of the present invention.

[0031] In the figure, 1 is the adaptive adjustment branch, 2 is the rod, 11 is the inner extension, 12 is the serpentine bend, 13 is the edge extension, 14 is the hollow hole, 15 is the inner adjustment part, and 16 is the outer adjustment part. Detailed Implementation

[0032] See Figure 1 Specific embodiment 1, an adaptive chassis ossicular prosthesis, includes a chassis structure for connecting the tympanic membrane and a rod 2. The chassis structure is fixedly connected to the rod 2. The chassis structure includes a connecting part for connecting the rod 2 and at least six adaptive adjustment branches 1. All adaptive adjustment branches 1 are circumferentially evenly spaced at angles, and the inner side of all adaptive adjustment branches 1 is fixedly connected to the outer side of the connecting part. There are gaps between all adaptive adjustment branches 1.

[0033] The end of rod 2 away from the chassis structure is used to fix it to the stapes footplate.

[0034] This invention facilitates the adaptation of branch 1 to the tympanic membrane structure, thereby improving the stability of the fit. The independent adaptive adjustment branch 1 deforms according to different areas of the tympanic membrane, thus adapting to the tympanic membrane structure.

[0035] Nine adaptive adjustment branches 1 are provided. The adaptive adjustment branches 1 include an inner extension 11, a serpentine bend 12 and an edge extension 13 connected in sequence; the extension direction of the inner extension 11 and the edge extension 13 is radial; the inner extension 11 and the edge extension 13 are arranged radially inside and outside; the width of the edge extension 13 increases radially from the inside to the outside; the thickness of the adaptive adjustment branches 1 is equal in the axial direction.

[0036] The diameter at the maximum point of the adaptive adjustment branch's outer diameter is less than 3mm. The axial length of the adaptive adjustment branch is 0.15mm.

[0037] When fitted to the tympanic membrane, each adaptive adjustment branch 1 can adapt to the uneven shape of the tympanic membrane. Softer tympanic membranes will enter the gaps between the adaptive adjustment branches 1 and the gaps in the serpentine bends 12. For harder tympanic membranes, the adaptive adjustment branches 1 will deform according to different areas of the tympanic membrane, thus adapting to the tympanic membrane structure. During postoperative recovery, these adaptive adjustment branches 1 with their numerous gaps further promote endothelialization of the tympanic membrane and the prosthesis.

[0038] See Figure 2 In specific embodiment 2, an adaptive chassis ossicular prosthesis includes a chassis structure for connecting the tympanic membrane and a rod 2. The chassis structure is fixedly connected to the rod 2. The chassis structure includes a connecting portion for connecting the rod 2 and at least six adaptive adjustment branches 1. All adaptive adjustment branches 1 are circumferentially evenly spaced at angles, and the inner side of all adaptive adjustment branches 1 is fixedly connected to the outer side of the connecting portion. There are gaps between all adaptive adjustment branches 1. The end of the rod 2 away from the chassis structure is used to fix it to the stapes footplate.

[0039] The adaptive adjustment branch 1 has twelve branches. Each adaptive adjustment branch 1 is an extension structure with perforated holes 14. The perforated holes 14 are through holes that are arranged along the length of the extension structure and are interconnected, with open ends in the axial direction. The wall thickness is uniform at the locations of the through holes in the extension structure. The cross-section of the through hole is polygonal. The cross-section of the through hole is rhomboid.

[0040] The width of the openwork structure consists of alternating increasing and decreasing segments arranged radially from the inside to the outside. The width of the increasing segments increases radially, while the width of the decreasing segments decreases radially.

[0041] The width of the extension structure, from the inside to the outside along the radial direction, consists of sequentially connected equal-width extension segments, alternating increasing segments, and decreasing segments. The width of the equal-width extension segments is equal along the radial direction, the width of the increasing segments increases radially, and the width of the decreasing segments decreases radially. Width refers to the direction perpendicular to both the radial and axial directions.

[0042] The diameter at the maximum point of the adaptive adjustment branch is less than 3 mm. The axial length of the adaptive adjustment branch is 0.3 mm.

[0043] Compared to the serpentine bend 12, this design has stronger rigidity and is suitable for thicker tympanic membranes or when additional tissue patches are placed on the tympanic membrane. For postoperative recovery, the adaptive adjustment branch 1 promotes endothelialization of the chassis and tympanic membrane. During the sound transmission process of the prosthesis, the soft tympanic membrane will fit the various structural parts of the chassis to the greatest extent. Therefore, the tiny vibrations transmitted from the outer ear to the tympanic membrane can be transmitted to the inner ear through the prosthesis, greatly improving the sound transmission performance of the prosthesis.

[0044] See Figure 3In specific embodiment 3, an adaptive chassis ossicular prosthesis includes a chassis structure for connecting the tympanic membrane and a rod 2. The chassis structure is fixedly connected to the rod 2. The chassis structure includes a connecting portion for connecting the rod 2 and at least six adaptive adjustment branches 1. All adaptive adjustment branches 1 are circumferentially evenly spaced at angles, and the inner side of all adaptive adjustment branches 1 is fixedly connected to the outer side of the connecting portion. There are gaps between all adaptive adjustment branches 1. The end of the rod 2 away from the chassis structure is used to fix it to the stapes footplate.

[0045] The adaptive adjustment branch 1 has twelve branches. Each adaptive adjustment branch 1 includes an inner adjustment section 15 and an outer adjustment section 16 arranged internally and externally, with a gap between them. The inner adjustment section 15 includes an extension piece and an extension block connected radially in sequence; the extension block is teardrop-shaped. The outer adjustment section 16 surrounds the inner adjustment section 15 along its outer contour, forming an open perimeter structure. The open end of the perimeter structure is fixedly connected to a connecting part, and it encloses a space to accommodate the inner adjustment section 15. The inner side of the inner adjustment section 15 is fixedly connected to the connecting part. An axially penetrating perforation is formed in the center of the extension block. The cross-section of the perforation is elliptical.

[0046] The diameter at the maximum point of the adaptive adjustment branch is less than 3 mm. The axial length of the adaptive adjustment branch is 0.3 mm.

[0047] In this design, the inner adjustment part 15 provides rigidity, keeping the chassis structure perpendicular to the rod 2 without deformation, while the outer adjustment part 16 deforms appropriately to adapt to different shapes of the tympanic membrane and deformation during surgery.

[0048] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An adaptive chassis ossicular prosthesis, comprising a chassis structure for connecting to the tympanic membrane and a rod, wherein the chassis structure is fixedly connected to the rod, characterized in that, The chassis structure includes a connecting portion for connecting the rod and at least six adaptive adjustment branches; All adaptive adjustment branches are circumferentially spaced at equal angles, and the inner side of all adaptive adjustment branches is fixedly connected to the outer side of the connecting part; There are gaps between all the adaptive adjustment branches; the independent adaptive adjustment branches deform according to different areas of the tympanic membrane, thereby adapting to the structure of the tympanic membrane; The adaptive adjustment branch is an extension structure with a hollow hole. The hollow hole is a through hole that is set along the length direction of the extension structure and is interconnected. The two ends of the through hole are open in the axial direction. The wall thickness of the extension structure at the through hole is equal; The hollow structure has alternating increasing and decreasing segments arranged radially from the inside to the outside. There are multiple increasing and decreasing segments. The width of the increasing segments increases radially, and the width of the decreasing segments decreases radially.

2. The adaptive chassis ossicular prosthesis according to claim 1, characterized in that: The cross-section of the through hole is a polygonal structure.

3. The adaptive chassis ossicular prosthesis according to claim 1, characterized in that: The cross-section of the through hole is rhomboid.

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