CN215273614U

CN215273614U - Stapes prosthesis

Info

Publication number: CN215273614U
Application number: CN202120861582.8U
Authority: CN
Inventors: 陶忠; 吴越; 史庆; 王海军; 王昊飞; 林龑
Original assignee: Baiwei Wuhan Medical Technology Co ltd
Current assignee: Baiwei Wuhan Medical Technology Co ltd
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2021-12-24
Anticipated expiration: 2031-04-25

Abstract

The utility model discloses a stapes prosthesis, which comprises a hook body, a connecting part and an extending part; the connecting part is cylindrical, and the upper end of the connecting part is fixedly connected with the hook body; the extending part is in a truncated cone shape, and the bottom surface of the truncated cone is fixedly connected with the lower end of the connecting part; a separating ring groove is arranged at the joint of the connecting part and the extending part; the diameter of the connecting part is equal to the maximum diameter of the extending part. The utility model discloses the stapes false body can make stapes false body and aperture laminating inseparabler, and the effect of stapes false body transmission vibrations is better.

Description

Stapes prosthesis

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a stapes prosthesis.

Background

Stapedectomy is the best method of surgically improving hearing for the treatment of otosclerosis. The stapes footplate resection is most commonly used. It is common practice to partially or completely resect the stapes, with recent trends toward a small hole in the footplate 1/3. The stapediectomy is followed by a stapediectomy, in which the stapedial prosthesis is placed between the long process of the incus and the vestibular window to replace the stapedia, and the vestibular window is covered with autologous fascia, connective tissue, etc. The prior stapes prosthesis has one end of a metal hook and the other end of a cylinder, one end of the cylinder extends into a small hole which is drilled before, and the metal hook hooks the long process of the incus, so that the stapes prosthesis works in place of the original stapes (see fig. 3).

However, the sizes of the punched small holes are not consistent, and the cylindrical end of the stapes prosthesis cannot be tightly attached to the wall of the small hole after extending into the small hole, so that the vibration transmission is not good, and the effect is not good after the stapes prosthesis is implanted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a stapes prosthesis is provided. The stapes prosthesis can enable the stapes prosthesis to be attached to the small hole more tightly, and the effect of vibration transmission of the stapes prosthesis is better.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a stapes prosthesis comprising a hook, a connecting portion and an intruding portion;

the connecting part is cylindrical, and the upper end of the connecting part is fixedly connected with the hook body;

the extending part is in a truncated cone shape, and the bottom surface of the truncated cone is fixedly connected with the lower end of the connecting part;

a separating ring groove is arranged at the joint of the connecting part and the extending part;

the diameter of the connecting part is equal to the maximum diameter of the extending part.

As a further improvement of the utility model, the hook body is made of metal.

As a further improvement of the utility model, the hook body, the connecting part and the extending part are of an integrated structure.

As a further improvement of the utility model, a plurality of annular grooves are evenly arranged on the stretching part.

Preferably, the plurality of annular grooves is 2 to 4 annular grooves.

As a further improvement of the utility model, it is protruding to be equipped with many arcs in the portion of stretching into, many arcs are protruding to be equipped with the diameter by last minor diameter diminish gradually.

Preferably, the plurality of arc-shaped protrusions are 2-4 arc-shaped protrusions.

As a further improvement of the utility model, an annular groove is arranged between the arc-shaped protrusions.

Any range recited in the present invention includes any numerical value between the endpoints and any sub-range comprised of any numerical value between the endpoints or any numerical value between the endpoints.

Unless otherwise specified, the raw materials of the present invention can be purchased commercially, and the equipment used in the present invention can be implemented by conventional equipment in the related art or by referring to the prior art in the related art.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model provides a stapes false body can make stapes false body and aperture laminating inseparabler, and the effect of stapes false body transmission vibrations is better.

Drawings

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings

FIG. 1 is a schematic view showing the construction of a stapes prosthesis according to example 1;

FIG. 2 is a schematic view showing the construction of a stapes prosthesis according to example 2;

fig. 3 is a schematic representation of a prior art stapes prosthesis implanted in the middle posterior ear.

1-hook body, 2-connecting part, 3-separating ring groove, 4-extending part, 5-ring groove, 6-arc protrusion, 7-malleus, 8-incus and 9-stapes prosthesis.

Detailed Description

In order to illustrate the invention more clearly, the invention is further described below with reference to preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As one aspect of the utility model, the utility model relates to a stapes prosthesis, which comprises a hook body 1, a connecting part 2 and an extending part 4;

the connecting part 2 is cylindrical, and the upper end of the connecting part is fixedly connected with the hook body 1;

the extending part 4 is in a shape of a truncated cone, and the bottom surface of the truncated cone is fixedly connected with the lower end of the connecting part 2;

a separating ring groove 3 is arranged at the joint of the connecting part 2 and the extending-in part 4, and the connecting part and the extending-in part can not be influenced by each other when the ring groove is processed;

the diameter of connecting portion 2 equals with the biggest diameter that stretches into portion 4, if meet and stretch into portion 4 overlength, stretch into portion 4 and be totally extirpated, connecting portion 2 also can replace and stretch into portion 4 work, and can not use because connecting portion 2 diameter is too big or the undersize.

In some embodiments of the present invention, the hook body 1 is made of pure titanium, and the titanium metal has good biocompatibility, and is more suitable for making a stapes prosthesis.

In some embodiments of the present invention, the hook body 1, the connecting portion 2 and the extending portion 4 are integrally formed; because the stapes prosthesis is of a small size, if machined separately, later assembly is required, which may deform the stapes prosthesis to damage.

In some embodiments of the present invention, a plurality of annular grooves 5 are uniformly formed on the extending portion 4; in use, the surgeon can cut the stapes prosthesis at the annular groove 5 to the appropriate length, depending on the actual situation.

In certain preferred embodiments of the present invention, the plurality of annular grooves are 2 to 4 annular grooves.

In some embodiments of the utility model, be equipped with many arc-shaped protrusion 6 on the portion 4 of stretching into, many arc-shaped protrusion 6's diameter is diminished gradually by last minor diameter, and the human fish tail can not be caused in the circular arc contact.

In certain preferred embodiments of the present invention, the plurality of arc-shaped protrusions 6 are 2-4 arc-shaped protrusions.

In some preferred embodiments of the present invention, the plurality of arc-shaped protrusions 6 are provided with annular grooves 5 therebetween; this is also to facilitate the surgeon cutting the stapes prosthesis at the annular groove 5 to cut the appropriate length; because of the arc-shaped protrusion, the sharp-angled edges at the edge of the annular groove 5 can be prevented from scratching the human body.

In the present invention, the use of the stapes prosthesis is: when implanting the stapes prosthesis, a small hole is made in the footplate 1/3; placing a stapes prosthesis between the long process of the incus and the vestibular window to replace the stapes after stapediectomy, and covering the vestibular window with autologous fascia, connective tissues and the like; i.e. the insertion portion is inserted into the previously drilled hole, and the hook body is hooked to the long process of the incus, so that the stapes prosthesis works in place of the original stapes.

Example 1

As shown in fig. 1, a stapes prosthesis comprises a metal hook 1, a connecting portion 2 and an intruding portion 4;

the connecting part 2 is cylindrical, and the upper end of the connecting part is fixedly connected with the metal hook 1;

the extending part 4 is in a shape of a truncated cone, and the bottom surface of the truncated cone is fixedly connected with the lower end of the connecting part;

a separating ring groove 3 is arranged at the joint of the connecting part 2 and the extending part 4;

the diameter of the connecting part 2 is equal to the maximum diameter of the extending part 4;

the metal hook 1, the connecting part 2 and the extending part 4 are of an integrally formed structure.

The extending part 4 is evenly provided with 3 annular grooves 5.

During the use, stretch into the aperture that portion 4 stretched into the ear, stretch into portion 4 because be the frustum of a cone shape, constantly stretch into in the aperture, until stretch into portion 4 and the diameter in aperture department equals, alright make stretch into portion 4 and closely laminate in aperture department, more be fit for the transmission vibrations. Because 3 ring grooves 5 that the portion 4 that stretches into set up evenly along its axis direction, the doctor then can be according to patient actual conditions intercepting corresponding length when the operation, more can improve the matching degree of prosthesis and patient, reinforcing adaptability.

Example 2

As shown in figure 2, a stapes prosthesis comprises a hook body 1, a connecting portion 2 and an extending portion 4;

the hook body 1, the connecting part 2 and the extending part 4 are of an integrally formed structure;

the extending part 4 is provided with 3 arc-shaped bulges 6, and the diameters of the 3 arc-shaped bulges 6 are gradually reduced from top to small;

and annular grooves 5 are arranged among the 3 arc-shaped protrusions 6.

During the use, it is protruding 6 to stretch into portion 4 and be equipped with 3 arcs along its axis direction, constantly stretch into in the aperture, 6 diameters are equal with the diameter in aperture department at the protruding 6 diameters of arc of aperture department until portion 4 stretches into, alright make portion 4 of stretching into closely laminate in aperture department, and the protruding 6 sharp edges and corners that do not have of arc, can reduce the injury to the ear, be equipped with ring channel 5 between two arc are protruding 6, the doctor can be according to the corresponding length of patient actual conditions intercepting when the operation equally, more can improve prosthesis and patient's matching degree.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes or variations led out by the technical scheme of the utility model are still in the protection scope of the utility model.

Claims

1. A stapes prosthesis, comprising a hook, a connecting portion and an intruding portion;

2. The stapes prosthesis according to claim 1, characterised in that: the hook body is made of pure titanium.

3. The stapes prosthesis according to claim 1, characterised in that: the hook body, the connecting part and the extending part are of an integrally formed structure.

4. The stapes prosthesis according to claim 1, characterised in that: a plurality of annular grooves are uniformly formed in the extending part.

5. The stapes prosthesis according to claim 4, characterised in that: the plurality of annular grooves are 2-4 annular grooves.

6. The stapes prosthesis according to claim 1, characterised in that: the stretching part is provided with a plurality of arc-shaped bulges, and the diameters of the arc-shaped bulges are gradually reduced from top to small.

7. The stapes prosthesis according to claim 6, characterised in that: the arc-shaped bulges are 2-4 arc-shaped bulges.

8. The stapes prosthesis according to claim 6, characterised in that: and annular grooves are arranged among the arc-shaped bulges.