WO2022021713A1

WO2022021713A1 - Artificial titanium ossicle having cup-shaped top disc

Info

Publication number: WO2022021713A1
Application number: PCT/CN2020/132756
Authority: WO
Inventors: 杨仕明
Original assignee: 黄建民; 福建医科大学附属协和医院
Priority date: 2020-07-31
Filing date: 2020-11-30
Publication date: 2022-02-03
Also published as: CN213851263U

Abstract

An artificial titanium ossicle having a cup-shaped top disc comprises a recessed top disc (1) and a stirrup end structure (2). A bottom surface of the recessed top disc (1) is connected to a top surface of the stirrup end structure (2). The recessed top disc (1) is provided with a plurality of sidewall holes A (4) extending through a sidewall thereof. The invention has a reasonable design, and can fit with irregularly-shaped cartilage at various locations. Since cartilage or bone portions can be inserted into the recessed top disc (1), the artificial titanium ossicle provides a stable contact connection. The artificial titanium ossicle serving as an ossicle connector can effectively utilize residual ossicles of a user.

Description

Cup-shaped top plate artificial titanium ossicular

technical field

The utility model relates to an artificial titanium ossicular bone of a cup-shaped top plate.

Background technique

The tympanic membrane contact end of the titanium ossicular used in clinical use is a circular plane. The tympanic membrane graft is usually a tragus perichondrium with a cartilage sheet. The cartilage sheet is used as a buffer bracket to reduce postoperative perforation. , The area of the cartilage sheet must exceed the area of the titanium ossicular end, otherwise it will not be able to connect stably and will not play a buffering role.

technical problem

The excessive area of the cartilage sheet will hinder the tympanic membrane vibration, reduce the sound transmission efficiency, and have a negative impact on the postoperative hearing improvement effect, and the optional transplant tissue is limited. Titanium ossicle tympanoplasty often discards the remaining autologous incus or malleus.

technical solutions

The utility model proposes an artificial titanium ossicle with a cup-shaped top plate, which solves the problem that the area of the cartilage sheet is too large, which hinders the vibration of the tympanic membrane and reduces the sound transmission efficiency.

The solution adopted by the present invention to solve the technical problem is a cup-shaped top plate artificial titanium ossicle, which is characterized in that it comprises a concave top plate and a stapes end structure, and the bottom surface of the concave top plate and the top of the stapes end structure face to face connection.

Further, the side wall of the concave top plate is provided with a number of side wall holes A penetrating the side wall.

Further, the concave top plate is cup-shaped, cup-shaped, bowl-shaped or disc-shaped.

Further, the described concave top plate and the stapes end structure are connected to each other through the connecting column, one end of the connecting column is fixed with the bottom surface middle of the concave top plate, and the other end of the connecting column is connected with the top surface middle of the stapes end structure. 's solid connection.

Further, the concave top plate is an upright cup-shaped or cup-shaped or bowl-shaped or disc-shaped or multi-lobed concave surface.

Further, the bottom surface of the described concave top plate is directly fixed with the top surface of the stapes end structure, the middle of the bottom surface of the concave top plate is provided with a circular hole, and the circular hole penetrates the bottom surface of the concave top plate and the top of the stapes end structure. noodle.

Further, the structure of the end of the stapes is in the shape of an inverted cup or multi-lobed.

Further, the side wall of the stapes end structure is provided with a number of side wall holes B penetrating the side wall.

Further, the structure of the stapes end is in the shape of a hammer head, the plane is on the bottom, the spherical surface is on the top, and the middle part of the spherical surface is connected with the connecting column.

Further, the contact surface of the stapes bottom plate of the stapes end structure is set as a plane or a shallow depression.

beneficial effect

Compared with the prior art, the utility model has the following beneficial effects: the structure is simple, the design is reasonable, the irregular shape of cartilage in various parts can be matched, the cartilage or hard bone particles are fitted with the concave top plate, and the connection and contact are more stable, As an ossicular connector, it can effectively utilize the autologous residual ossicular bone.

Description of drawings

The utility model patent is further described below in conjunction with the accompanying drawings.

1 is a schematic diagram 1 of Embodiment 1 of the present utility model;

2 is a schematic diagram of Embodiment 2 of the present utility model;

3 is a schematic diagram 1 of Embodiment 3 of the present utility model;

FIG. 4 is a schematic diagram 2 of Embodiment 3 of the present invention.

Fig. 5 Schematic diagram 3 of embodiment 3 of the present utility model

6 is a schematic diagram 2 of Embodiment 1 of the present utility model;

In the figure: 1- concave top plate; 2- stapes end structure; 3- connecting column; 4- side wall hole A; 5- side wall hole B; 6- round hole; 7- multi-lobed structure of stapes end; 8- The gap between the flap-like structures at the end of the stapes; 9- The flap-like structures of the concave top disc.

Embodiments of the present invention

The present utility model will be further described below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1 and 6, Example 1: a cup-shaped top plate artificial titanium ossicular bone: it is a 'partial ossicular pseudoprosthesis', including a concave top plate and a stapes end structure, and the concave top plate has a The bottom surface is connected to the top surface of the stapes end structure.

In this embodiment, the side wall of the concave top plate is provided with a plurality of side wall holes A penetrating the side wall.

In this embodiment, the concave top plate is cup-shaped, cup-shaped, bowl-shaped or disc-shaped.

The concave top plate can match the irregularly shaped cartilage in various parts, such as the concha cartilage, the external auditory canal cartilage, the residual ossicular bone or the mastoid hard bone, which can play a buffering and supporting role. Concave fitting, the artificial auditory bone will not be detached, so the installation is more stable. At the same time, smaller cartilage or hard bone particles are used as buffer support, which is conducive to the sound transmission of the tympanic membrane and improves postoperative hearing, and can be equipped with tragus Other tissues other than perichondrium, such as temporalis muscle fascia, periosteum and other soft tissues are used as tympanic membrane grafts, that is, the applicable tympanic membrane grafts are more diverse, which can effectively overcome the shortcomings of the existing artificial titanium ossicular bone.

In this embodiment, the concave top plate and the stapes end structure are connected to each other through a connecting column, one end of the connecting column is integrally formed with the middle part of the bottom surface of the concave top plate, and the other end of the connecting column and the stapes end structure are integrally formed. The middle of the top surface is integrally formed;

The connecting column can be of existing fixed length or adjustable length.

In this embodiment, the structure of the end of the stapes is in the shape of an inverted cup or a multi-lobed shape.

In this embodiment, the side wall of the stapes end structure is provided with a plurality of side wall holes B penetrating the side wall.

In this embodiment, the diameter of the top plate is 2.5-3.5mm, the thickness is 0.1-0.2mm, the depth of the midpoint of the cup-shaped structure of the top plate is 1.2mm-1.5mm; the diameter of the column is 0.2-0.4mm, and the length of the column is 1.0mm～3.0mm, the length of the cylinder is fixed or adjustable; the outer height and outer diameter of the concave cup structure of the stapes are 1.5～2.0mm, the inner height and inner diameter of the stapes end structure are both 1.4～1.9mm, the stapes When the end structure is multi-lobed, the height and width of the notch are 1.0 to 1.5 mm.

In this embodiment, during use, the concave top plate is fitted with cartilage particles or bone particles in contact with the tympanic membrane, and the stapes end structure is fitted with the autologous stapes to establish the connection between the tympanic membrane and the stapes.

As shown in FIG. 2, a second embodiment is provided, which is a 'full ossicular pseudoprosthesis', which is used for patients with structural damage on the autologous stapedial plate. Since other structures are the same as those of embodiment 1, the other structures will not be repeated. , the difference lies in: the structure of the stapes end is in the shape of a hammer head, the plane is on the bottom, the spherical surface is on the top, and the middle part of the spherical surface is connected with the connecting column, and the contact surface of the bottom plate of the stapes of the stapes end structure, that is, the stapes The bottom surface of the end structure is set as a plane or shallow depression, and the depression adapts to the uneven surface structure of the stapes bottom plate, so that the fitting contact is stable.

As shown in Figure 3 and Figure 5, the residual autologous incus or malleus head is often discarded in clinical use of titanium ossicular tympanoplasty. Now we provide a reimplantation using the autologous residual ossicular bone to achieve better sound transmission effect. . Embodiment 3, a double-cup-shaped artificial titanium ossicular bone: comprising a concave top plate and a stapes end structure, and the bottom surface of the concave top plate is directly connected to the top surface of the stapes end structure.

In this embodiment, a plurality of side wall holes A penetrating the side walls are provided on the side walls of the concave top plate.

In this embodiment, the bottom surface of the concave top plate and the top surface of the stapes end structure are integrally formed, that is, they share one surface, which is a double cup shape without columns. The diameter of the hole is 1.0mm to 1.2mm. The round hole penetrates the bottom surface of the concave top plate and the top surface of the stapes end structure, and connects the concave top plate and the stapes end structure. It can be used as an ossicular connection structure to realize the reuse of autologous residual ossicular bone. , the tissue compatibility is close to the physiological state, and the head of the stapes is in contact with the re-implanted autologous residual ossicular bone through the round hole, and the mucosal blood vessels extend to the re-implanted ossicular bone, which can form a new ossicular chain connection.

In this embodiment, the diameter of the top plate is 2.5-3.5mm, the thickness is 0.1-0.2mm, the midpoint depth of the cup-shaped structure of the top plate is 1.2mm-1.5mm; the outer height and outer diameter of the stapes end structure are both 1.5-2.0 mm, the inner height and inner diameter of the stapes end structure are both 1.4 to 1.9 mm, and when the stapedial end structure is multi-lobed, the height and width of the notch are 1.0 to 1.5 mm.

When in use, the concave top plate is fitted with the autologous residual ossicular bone, and the stapes end structure is fitted with the autologous stapes bone to realize the connection of the residual incus or malleus with the stapes. better result.

Unless otherwise stated in any of the technical solutions disclosed in the above-mentioned utility model, if it discloses a numerical range, then the disclosed numerical range is the preferred numerical range, and any person skilled in the art should understand: the preferred numerical range is only It is a numerical value with obvious or representative technical effect among many practicable numerical values. Since the numerical values are too numerous to be exhaustive, only some numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values shall not constitute a limitation on the protection scope of the present invention.

If words such as "first" and "second" are used herein to define components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing components Difference, unless otherwise stated, the above words have no special meaning.

If the present utility model discloses or involves parts or structures that are fixedly connected to each other, then, unless otherwise stated, fixed connection can be understood as: detachable fixed connection (for example, using bolts or screws), it can also be understood as : Non-removable fixed connection (such as riveting, welding), of course, the mutual fixed connection can also be replaced by an integral structure (such as using a casting process to integrally form) (except that it is obviously impossible to use an integral forming process).

In addition, any of the above-mentioned technical solutions disclosed in the present utility model is used to represent positional relationships such as "vertical", "horizontal", "upper", "lower", "front", "rear", "left", The orientation or positional relationship indicated by "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of It is convenient to describe the patent, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation on this patent, and any technical solution disclosed in the above-mentioned utility model The terms used to denote a shape as used in <RTI ID=0.0></RTI>

Any component provided by the present invention may be assembled from a plurality of individual components, or may be a single component manufactured by an integral molding process.

Finally it should be noted that: the above embodiment is only used to illustrate the technical scheme of the present invention and not to limit it; although the present invention has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should understand: still The specific embodiments of the present invention can be modified or some technical features can be equivalently replaced; without departing from the spirit of the technical solutions of the present invention, all of them should be included in the scope of the technical solutions claimed in the present invention.

Claims

A cup-shaped top plate artificial titanium ossicle is characterized in that: it comprises a concave top plate and a stapes end structure, and the bottom surface of the concave top plate is connected with the top surface of the stapes end structure.
A cup-shaped top plate artificial titanium ossicular bone according to claim 1, characterized in that: the side wall of the concave top plate is provided with a plurality of side wall holes A penetrating the side wall.
A cup-shaped top plate artificial titanium ossicular bone according to claim 2, characterized in that: the concave top plate is cup-shaped, cup-shaped, bowl-shaped or disc-shaped.
A cup-shaped top plate artificial titanium ossicular bone according to claim 3, characterized in that: the concave top plate and the stapes end structure are connected to each other through a connecting column, and one end of the connecting column is connected to the concave top plate. The middle part of the bottom surface is fixedly connected, and the other end of the connecting column is fixedly connected to the middle part of the top surface of the stapes end structure.
A cup-shaped top plate artificial titanium ossicular bone according to claim 2, wherein the concave top plate is an upright cup-shaped or cup-shaped or bowl-shaped or disc-shaped or multi-lobed concave surface.
A cup-shaped top plate artificial titanium ossicle according to claim 5, characterized in that: the bottom surface of the concave top plate is directly fixed with the top surface of the stapes end structure, and the middle part of the bottom surface of the concave top plate is opened There are round holes that penetrate the bottom surface of the concave top plate and the top surface of the stapes end structure.
A cup-shaped top plate artificial titanium ossicular bone according to any one of claims 4 or 6, characterized in that: the structure of the stapes end is an inverted cup-shaped or multi-lobed shape.
A cup-shaped top plate artificial titanium ossicular bone according to claim 7, characterized in that: the side wall of the stapes end structure is provided with a plurality of side wall holes B penetrating the side wall.
A cup-shaped top plate artificial titanium ossicular bone according to claim 4, characterized in that: the structure of the stapes end is in the shape of a hammer head, the plane is on the bottom, the spherical surface is on the top, and the middle of the spherical surface is connected with the connecting column.
A cup-shaped top plate artificial titanium ossicular bone according to claim 9, characterized in that: the contact surface of the stapes bottom plate of the stapes end structure is a plane or a shallow depression.