Self-adaptive chassis ossicle prosthesis

Abstract

The invention relates to the technical field of auditory ossicle prostheses. A self-adaptive chassis auditory ossicle prosthesis comprises a chassis structure used for being connected with a tympanic membrane and a rod body, the chassis structure is fixedly connected with the rod body, and the chassis structure comprises a connecting part used for being connected with the rod body and at least six self-adaptive adjusting branches; all the self-adaptive adjusting branches are distributed at equal angle intervals in the circumferential direction, and the inner sides of all the self-adaptive adjusting branches are fixedly connected with the outer side of the connecting part; and gaps exist among all the self-adaptive adjusting branches. According to the invention, through self-adaptive adjustment of the branches, the tympanic membrane structure is met, and the fitting stability with the tympanic membrane is improved. The independent self-adaptive adjusting branches can deform according to different areas of the tympanic membrane so as to adapt to the tympanic membrane structure.

Description

Technical Field

[0001] The present invention relates to the technical field of prostheses, and in particular to an ossicular prosthesis. Background Art

[0002] The chassis of the current traditional total replacement ossicular prostheses and partial replacement prostheses that fit the tympanic membrane have different shapes and structures, but they are basically rigid discs that fit the soft tympanic membrane. Although during surgery, the doctor can make the tympanic membrane fit tightly against the rigid chassis, during the postoperative recovery and sound conduction process, the chassis and axis often tilt at a certain angle and fail. At the same time, when sound vibrates through the tympanic membrane, the tympanic membrane has an irregular structure at the microscopic level, so the sound conduction in each area is different when vibration occurs.

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

[0004] In view of the problems existing in the prior art, the present invention provides an adaptive chassis ossicular prosthesis, which solves at least one of the above technical problems.

[0005] The technical solution of the present invention is: an adaptive chassis ossicular prosthesis, comprising a chassis structure for connecting to the eardrum and a rod body, wherein the chassis structure is fixedly connected to the rod body, and characterized in that the chassis structure comprises a connecting portion for connecting to the rod body and at least six adaptive adjustment branches;

[0006] All the adaptive adjustment branches are circumferentially distributed at equal intervals, and the inner sides of all the adaptive adjustment branches are fixedly connected to the outer sides of the connecting portion;

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

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

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

[0010] As a preferred solution, the adaptive adjustment branch comprises an inner extension portion, a serpentine bending portion and an edge extension portion connected in sequence;

[0011] The extending directions of the inner extension portion and the edge extension portion are both radial;

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

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

[0014] The thickness of the adaptive adjustment branch in the axial direction is uniform.

[0015] When fitted with the tympanic membrane, each adaptive adjustment branch can adapt to the uneven shape of the tympanic membrane. The soft tympanic membrane will enter the gaps between the adaptive adjustment branches and the gaps in the serpentine bends. For a harder tympanic membrane, the adaptive adjustment branches will deform according to different areas of the tympanic membrane to adapt to the tympanic membrane structure. During postoperative recovery, this adaptive adjustment branch with more gaps promotes endothelialization of the tympanic membrane and the prosthesis.

[0016] As another preferred solution, the adaptive adjustment branch is an extended structure with a hollow hole, the hollow hole is a through hole arranged along the length direction of the extended structure and connected to each other, and both ends of the through hole in the axial direction are open;

[0017] The wall thickness of the extending structure where the through hole is opened is uniform.

[0018] Compared with the serpentine bend, this solution has stronger rigidity and is suitable for thicker tympanic membranes or for adding tissue patches on the tympanic membrane. For postoperative recovery, the adaptive adjustment branch promotes the endothelialization of the chassis and tympanic membrane. During the sound transmission 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 of the prosthesis.

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

[0020] Further preferably, the cross-section of the through hole is rhombus-shaped.

[0021] As another preferred solution, the adaptive adjustment branch includes an inner adjustment part and an outer adjustment part which are arranged inside and outside, and there is a gap between the inner adjustment part and the outer adjustment part.

[0022] Further preferably, the inner adjustment portion comprises an extension sheet and an extension block sequentially connected along a radial direction;

[0023] The extension block is in the shape of a water drop;

[0024] The outer adjustment part is arranged along the outer contour of the inner adjustment part and is surrounded by the outer periphery of the inner adjustment part. The outer adjustment part is an open surrounding structure. The open end of the surrounding structure is fixedly connected to the connecting part and encloses 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 solution, the inner adjustment part provides rigidity to keep the chassis structure and the rod body perpendicular and not deformed, and the outer adjustment part deforms appropriately to adapt to different shapes of the tympanic membrane and deformation during surgery.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention fits the eardrum more closely and can transmit the vibration of the eardrum over a wider range. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0029] Figure 2 A structural schematic diagram of a specific embodiment 2 of the present invention;

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

[0031] In the figure, 1 is an adaptive adjustment branch, 2 is a rod body, 11 is an inner extension portion, 12 is a serpentine bending portion, 13 is an edge extension portion, 14 is a hollow hole, 15 is an inner adjustment portion, and 16 is an outer adjustment portion. DETAILED DESCRIPTION

[0032] See also Figure 1 , Specific embodiment 1, an adaptive chassis ossicular prosthesis, includes a chassis structure for connecting to the eardrum and a rod body 2, the chassis structure is fixedly connected to the rod body 2, the chassis structure includes a connecting part for connecting to the rod body 2 and at least six adaptive adjustment branches 1; all the adaptive adjustment branches 1 are distributed at equal angles in the circumferential direction, and the inner sides of all the adaptive adjustment branches 1 are fixedly connected to the outer sides of the connecting part; there are gaps between all the adaptive adjustment branches 1.

[0033] The end of the rod body 2 away from the chassis structure is used to be fixed on the stapes footplate.

[0034] The present invention facilitates to meet the eardrum structure and improve the stability of the fit with the eardrum through the adaptive adjustment branch 1. The independent adaptive adjustment branch 1 will deform according to different areas of the eardrum, thereby adapting to the eardrum structure.

[0035] There are nine adaptive adjustment branches 1. The adaptive adjustment branch 1 includes an inner extension portion 11, a serpentine bending portion 12 and an edge extension portion 13 connected in sequence; the inner extension portion 11 and the edge extension portion 13 extend in radial directions; the inner extension portion 11 and the edge extension portion 13 are arranged radially inside and outside; the width of the edge extension portion 13 increases radially from inside to outside; and the thickness of the adaptive adjustment branch 1 in the axial direction is uniform.

[0036] The diameter of the maximum outer diameter of the adaptive adjustment branch is less than 3 mm, and the length of the adaptive adjustment branch in the axial direction is 0.15 mm.

[0037] When fitted with the eardrum, each adaptive adjustment branch 1 can adapt to the uneven shape of the eardrum, and the soft eardrum will enter the gaps between the adaptive adjustment branches 1 and the gaps of the serpentine bend 12. For a harder eardrum, the adaptive adjustment branch 1 will deform according to different areas of the eardrum to adapt to the structure of the eardrum. During postoperative recovery, the adaptive adjustment branch 1 with more gap structures further promotes the endothelialization of the eardrum and the prosthesis.

[0038] See also Figure 2 , Specific embodiment 2, an adaptive chassis ossicular prosthesis, comprising a chassis structure for connecting to the eardrum and a rod body 2, the chassis structure is fixedly connected to the rod body 2, the chassis structure comprises a connecting portion for connecting the rod body 2 and at least six adaptive adjustment branches 1; all the adaptive adjustment branches 1 are circumferentially equally spaced at an angle, and the inner side of all the adaptive adjustment branches 1 is fixedly connected to the outer side of the connecting portion; there is a gap between all the adaptive adjustment branches 1. The end of the rod body 2 away from the chassis structure is used to be fixed on the stapes footplate.

[0039] Twelve adaptive adjustment branches 1 are provided. The adaptive adjustment branches 1 are extended structures with hollow holes 14. The hollow holes 14 are through holes arranged along the length direction of the extended structure and are mutually conductive. Both ends of the through holes are open in the axial direction. The wall thickness of the extended structure where the through holes are opened is uniform. The cross section of the through hole is a polygonal structure. The cross section of the through hole is a rhombus.

[0040] The width of the hollow structure is alternately arranged with increasing sections and decreasing sections from the inside to the outside along the radial direction. The width of the increasing section increases along the radial direction, and the width of the decreasing section decreases along the radial direction.

[0041] The width of the extension structure is sequentially connected equal width extension sections, alternately arranged increasing sections and decreasing sections along the radial direction from the inside to the outside. The width of the equal width extension sections is equal along the radial direction, the width of the increasing sections increases along the radial direction, and the width of the decreasing sections decreases along the radial direction. The width refers to the direction perpendicular to the radial direction and the axial direction.

[0042] The diameter of the maximum outer diameter of the adaptive adjustment branch is less than 3 mm, and the length of the adaptive adjustment branch in the axial direction is 0.3 mm.

[0043] Compared with the serpentine bending part 12, this scheme has stronger rigidity and is suitable for thicker tympanic membranes or adding tissue patches on the tympanic membrane. For postoperative recovery, the adaptive adjustment branch 1 promotes the endothelialization of the chassis and tympanic membrane. During the sound transmission 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 of the prosthesis.

[0044] See also Figure 3, Specific embodiment 3, an adaptive chassis ossicular prosthesis, comprising a chassis structure for connecting to the eardrum and a rod body 2, the chassis structure is fixedly connected to the rod body 2, the chassis structure comprises a connecting portion for connecting the rod body 2 and at least six adaptive adjustment branches 1; all the adaptive adjustment branches 1 are circumferentially equally spaced at an angle, and the inner side of all the adaptive adjustment branches 1 is fixedly connected to the outer side of the connecting portion; there is a gap between all the adaptive adjustment branches 1. The end of the rod body 2 away from the chassis structure is used to be fixed on the stapes footplate.

[0045] Twelve adaptive adjustment branches 1 are provided. The adaptive adjustment branch 1 includes an inner adjustment part 15 and an outer adjustment part 16 which are arranged inside and outside, and there is a gap between the inner adjustment part 15 and the outer adjustment part 16. The inner adjustment part 15 includes an extension piece and an extension block which are sequentially connected along the radial direction; the extension block is in the shape of a water drop; the outer adjustment part 16 is arranged around the outer periphery of the inner adjustment part 15 along the outer contour of the inner adjustment part 15, and the outer adjustment part 16 is an open surrounding structure, the open end of the surrounding structure is fixedly connected to the connecting part, and a space for accommodating the inner adjustment part 15 is formed, and the inner side of the inner adjustment part 15 is fixedly connected to the connecting part. A through hole which passes through in the axial direction is provided in the center of the extension block. The cross section of the through hole is elliptical.

[0046] The diameter of the maximum outer diameter of the adaptive adjustment branch is less than 3 mm, and the length of the adaptive adjustment branch in the axial direction is 0.3 mm.

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

[0048] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An adaptive chassis ossicular prosthesis, comprising a chassis structure for connecting to the eardrum and a rod body, wherein the chassis structure is fixedly connected to the rod body, and characterized in that: The chassis structure comprises a connecting portion for connecting the rod body and at least six adaptive adjustment branches; All the adaptive adjustment branches are circumferentially distributed at equal intervals, and the inner sides of all the adaptive adjustment branches are fixedly connected to the outer sides of the connecting portion; There are gaps between all adaptive adjustment branches.

2. The adaptive chassis ossicular prosthesis according to claim 1, characterized in that: The adaptive adjustment branch comprises an inner extension portion, a serpentine bending portion and an edge extension portion connected in sequence; The extending directions of the inner extension portion and the edge extension portion are both radial; The inner extension portion and the edge extension portion are arranged radially inside and outside; The width of the edge extension portion increases radially from inside to outside; The thickness of the adaptive adjustment branch in the axial direction is uniform.

3. The adaptive chassis ossicular prosthesis according to claim 1, characterized in that: The adaptive adjustment branch is an extended structure with a hollow hole, and the hollow hole is a through hole arranged along the length direction of the extended structure and connected to each other, and both ends of the through hole in the axial direction are open; The wall thickness of the extending structure where the through hole is opened is uniform.

4. The adaptive chassis ossicular prosthesis according to claim 3, characterized in that: The cross section of the through hole is a polygonal structure.

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

6. The adaptive chassis ossicular prosthesis according to claim 1, characterized in that: The adaptive adjustment branch includes an inner adjustment part and an outer adjustment part which are arranged inside and outside, and there is a gap between the inner adjustment part and the outer adjustment part.

7. The adaptive chassis ossicular prosthesis according to claim 6, characterized in that: The inner adjustment portion includes an extension piece and an extension block which are sequentially connected along the radial direction; The extension block is in the shape of a water drop; The outer adjustment part is arranged along the outer contour of the inner adjustment part and is surrounded by the outer periphery of the inner adjustment part. The outer adjustment part is an open surrounding structure. The open end of the surrounding structure is fixedly connected to the connecting part and encloses a space to accommodate the inner adjustment part. The inner side of the inner adjustment part is fixedly connected to the connecting part.

8. An adaptive chassis ossicular prosthesis, comprising a chassis structure for connecting to the eardrum and a rod body, wherein the chassis structure is fixedly connected to the rod body, and characterized in that: The chassis structure comprises a connecting portion for connecting the rod body and at least six adaptive adjustment branches; All the adaptive adjustment branches are circumferentially distributed at equal intervals, and the inner sides of all the adaptive adjustment branches are fixedly connected to the outer sides of the connecting portion; There are gaps between all adaptive adjustment branches; The adaptive adjustment branch comprises an inner extension portion, a serpentine bending portion and an edge extension portion connected in sequence; The extending directions of the inner extension portion and the edge extension portion are both radial; The inner extension portion and the edge extension portion are arranged radially inside and outside; The width of the edge extension portion increases radially from inside to outside; The thickness of the adaptive adjustment branch in the axial direction is uniform.

9. An adaptive chassis ossicular prosthesis, comprising a chassis structure for connecting to the eardrum and a rod body, wherein the chassis structure is fixedly connected to the rod body, and characterized in that: The chassis structure comprises a connecting portion for connecting the rod body and at least six adaptive adjustment branches; All the adaptive adjustment branches are circumferentially distributed at equal intervals, and the inner sides of all the adaptive adjustment branches are fixedly connected to the outer sides of the connecting portion; There are gaps between all adaptive adjustment branches; The adaptive adjustment branch is an extended structure with a hollow hole, and the hollow hole is a through hole arranged along the length direction of the extended structure and connected to each other, and both ends of the through hole in the axial direction are open; The wall thickness of the extension structure where the through hole is opened is uniform; The cross section of the through hole is a polygonal structure.

10. An adaptive chassis ossicular prosthesis, comprising a chassis structure for connecting to the eardrum and a rod body, wherein the chassis structure is fixedly connected to the rod body, and characterized in that: The chassis structure comprises a connecting portion for connecting the rod body and at least six adaptive adjustment branches; All the adaptive adjustment branches are circumferentially distributed at equal intervals, and the inner sides of all the adaptive adjustment branches are fixedly connected to the outer sides of the connecting portion; There are gaps between all adaptive adjustment branches; The adaptive adjustment branch includes an inner adjustment part and an outer adjustment part arranged inside and outside, and there is a gap between the inner adjustment part and the outer adjustment part; The inner adjustment portion includes an extension piece and an extension block which are sequentially connected along the radial direction; The extension block is in the shape of a water drop; The outer adjustment part is arranged along the outer contour of the inner adjustment part and is surrounded by the outer periphery of the inner adjustment part. The outer adjustment part is an open surrounding structure. The open end of the surrounding structure is fixedly connected to the connecting part and encloses a space to accommodate the inner adjustment part. The inner side of the inner adjustment part is fixedly connected to the connecting part.

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