CN218572362U

CN218572362U - Ossicle implanting prosthesis with adjustable length

Info

Publication number: CN218572362U
Application number: CN202222090065.2U
Authority: CN
Inventors: 熊墨勇; 袁剑雄; 李丙军
Original assignee: Youerlai Changzhou Medical Technology Co ltd
Current assignee: Youerlai Changzhou Medical Technology Co ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2023-03-07
Anticipated expiration: 2032-08-09

Abstract

The utility model provides an auditory ossicle implants prosthesis with adjustable length relates to medical instrument technical field, and this implants prosthesis includes intermediate rod, tympanic membrane roof and the stapes coupling member of making by the titanium, and the intermediate rod is located between tympanic membrane roof and the stapes coupling member, and the tympanic membrane roof is used for coupling the tympanic membrane, and the stapes coupling member is used for coupling the stapes, its characterized in that, and the intermediate rod includes the body of rod of a plurality of sections head and the tail meet in order, and the festival number of the body of rod can change. The utility model discloses an intermediate lever includes a plurality of sections end to end's the body of rod in order, and the section number of the body of rod can change, realizes here through truncating, adopts the body of rod that can truncate the processing, during the stock, only by a little longer listen ossicle implant the false body can, only a few several kinds of models just are enough to cover a plurality of size models promptly, greatly reduced listen ossicle implant the false body's stock cost.

Description

Auditory ossicle implant prosthesis with adjustable length

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to an it implants false body to listen ossicle with adjustable length.

Background

In the ossicular chain reconstruction operation, the pure titanium ossicle prosthesis can be used as a reliable artificial substitute for replacing ossicular structures damaged by diseases. With this benefit, the mechanical conduction mechanism between the tympanic membrane and the stapes footplate will be repaired, resulting in restoration or improvement of the function of the middle ear sound transmission system. There are two basic types of ossicular implant prostheses, respectively: total implanted auditory ossicle prosthesis (TORP) -suitable for total ossicular replacement, the prosthesis being directly attached to the stapes footplate; partial implant auditory ossicle prosthesis (PORP) -suitable for partial ossicular replacement, the stapes function of the patient will be preserved.

The fully implanted auditory ossicle prosthesis needs to maintain proper tension between the tympanic membrane and the stapes footplate, and the partially implanted auditory ossicle prosthesis needs to maintain proper tension between the tympanic membrane and the stapes, namely, the length of the auditory ossicle prosthesis is required to be matched with the height of the middle ear structure of a patient.

However, there is a certain individual difference in the middle ear structure and size of each patient, the middle ear structure is deep, small and complicated, and in order to adapt to various situations, auditory ossicle prostheses of as much length as possible are stocked, which means that it is at least necessary to stock different models of auditory ossicle prostheses in 18 (TORP is usually from 3.0 to 7.5mm, porp is usually from 2.0 to 5.5mm, one model is divided every 0.5 mm), resulting in an increase in stock cost.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides an ossicle implant prosthesis with adjustable length to solve the technical problem in the prior art that the ossicle implant prosthesis with different lengths needs to be prepared as much as possible due to the difference between the structure and size of the middle ear of each patient, resulting in higher stock cost.

In order to achieve the above object, the present invention provides a length-adjustable ossicle implant prosthesis, comprising a middle rod made of titanium, a tympanic membrane top plate and a stapes coupling element, wherein the middle rod is arranged between the tympanic membrane top plate and the stapes coupling element, the tympanic membrane top plate is used for coupling the tympanic membrane, the stapes coupling element is used for coupling the stapes, the middle rod comprises a plurality of sections of rod bodies which are connected end to end in sequence, and the number of sections of the rod bodies can be changed.

Preferably, the rod bodies are integrally formed.

Preferably, an annular groove is arranged between the rod bodies.

Preferably, the longitudinal section of the annular groove is V-shaped.

Preferably, the V-shaped angle of the annular groove is 90 degrees.

Preferably, the length of the shaft body is 1mm, 1.5mm, 2mm or 2.5mm.

Preferably, the middle rod is detachably connected with the tympanic membrane top plate.

Preferably, a connecting column is arranged at the center of the tympanic membrane top plate, one end of the connecting column is fixedly arranged on the tympanic membrane top plate, the connecting column is perpendicular to the tympanic membrane top plate, and a first insertion hole for inserting the middle rod is formed in the other end of the connecting column.

Preferably, the medial rod is removably connected to the stirrup coupling.

Preferably, the stapes coupling is provided with a second socket for insertion of the intermediate rod.

The utility model provides a length-adjustable ossicle implanting prosthesis has following technological effect:

this kind of prosthesis is implanted to ossicle with adjustable length, the same with traditional ossicle implantation prosthesis is, all include intermediate lever, tympanic membrane roof and stapes coupling part, intermediate lever, tympanic membrane roof and stapes coupling part are made by the titanium, the both sides of tympanic membrane roof and stapes coupling part are located to the intermediate lever, the tympanic membrane roof is used for coupling the tympanic membrane, stapes coupling part is used for coupling the stapes, different with traditional ossicle implantation prosthesis is, the utility model discloses an intermediate lever includes the body of rod of a plurality of sections end to end in order, and the section number of the body of rod can change, realizes here through truncating, adopts the body of rod that can truncate the processing, during stock, only by slightly longer ossicle implantation prosthesis can, only a small number of several kinds of models just can be enough to cover a plurality of size models promptly, greatly reduced the stock cost of ossicle implantation prosthesis.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic perspective view of an auditory ossicle implant prosthesis according to one embodiment of the invention;

FIG. 2 is a side view of the ossicular implant prosthesis of FIG. 1;

FIG. 3 is a schematic view of a first disassembled configuration of the ossicular implant prosthesis of FIG. 1;

fig. 4 is a schematic view of a second disassembled configuration of the auditory ossicle implant prosthesis of fig. 1.

Wherein, fig. 1-4:

1. an intermediate lever; 11. a rod body; 12. an annular groove;

2. a tympanic membrane top plate; 21. connecting columns; 22. a first jack;

3. a stapes coupling; 31. a second receptacle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, rather than to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

As mentioned in the background, there is a certain individual difference in the structure and size of the middle ear of each patient in the prior art, the structure of the middle ear is deep, small and complex, in order to adapt to various situations, the auditory ossicle prosthesis with as much length as possible is prepared, which means that at least the different models of auditory ossicle prosthesis in 18 are prepared (TORP is usually from 3.0 to 7.5mm, porp is usually from 2.0 to 5.5mm, and one model is divided every 0.5 mm), resulting in the increase of the preparation cost.

Based on this, the utility model provides a length-adjustable listens ossicle to implant false body is different with traditional listening ossicle to implant false body, the utility model discloses an intermediate lever includes the body of rod of a plurality of sections end to end in order, and the section number of the body of rod can change, realizes here through truncating, adopts the body of rod that can truncate the processing, during stocking, only by slightly longer listen ossicle to implant false body can, only a few several kinds of models just are enough to cover a plurality of size models promptly, greatly reduced listen ossicle to implant false body's stocking cost.

The technical solution of the present invention will be described in detail with reference to the accompanying drawings 1-4.

Example 1:

as shown in fig. 1 and 2, a schematic view of the structure of an ossicular implant prosthesis according to the present embodiment includes a medial rod 1, a tympanic membrane roof 2, and a stapes coupling 3.

The intermediate rod 1, the tympanic membrane roof 2 and the stapes coupling 3 are all made of Titanium (Titanium) which has a good affinity with human tissue and a good biocompatibility, high hardness and light weight. The principle is that after the finely processed pure titanium is exposed in the air, an oxide layer is rapidly formed on the surface of the finely processed pure titanium, and the finely processed pure titanium has high affinity to various biomolecules, so that an organic matrix is formed to adsorb various living cells and the surface of the living cells. Tests show that the pure titanium has little toxic effect on organisms, and the pure titanium auditory ossicle implanted prosthesis has no pollution and toxicity on the organisms after being implanted into the middle ear cavity, is the best artificial auditory ossicle material at present and can be safely compatible with the MR magnetic resonance environment.

Specifically, the intermediate rod 1 is disposed between the tympanic membrane roof 2 and the stapes coupling element 3, the intermediate rod 1 is detachably connected to the tympanic membrane roof 2, the intermediate rod 1 is detachably connected to the stapes coupling element 3, as shown in fig. 3 and 4, the tympanic membrane roof 2 is used for coupling the tympanic membrane, and the stapes coupling element 3 is used for coupling the stapes.

Furthermore, the utility model discloses a middle pole 1 includes the body of rod 11 of a plurality of sections end to end in order, as shown in fig. 1 and fig. 2, the diameter of the body of rod 11 is 0.3mm, the length of every section body of rod 11 is preferred 1mm, 1.5mm, 2mm or 2.5mm, the number of sections of the body of rod 11 can change, change here is realized through directly truncating terminal body of rod 11, for example, a certain model has 5 sections bodies of rod 11, be not suitable for some people's middle ear structure, truncate it into 4 sections with the instrument of adoption, so the ossicle implantation prosthesis that can truncate only a few several kinds of models just can be enough to cover a plurality of size models, greatly reduced the stock cost that ossicle implantation prosthesis.

The two ends of the middle rod 1 of the embodiment are detachably connected with the tympanic membrane top plate 2 and the stapes coupling part 3, which are as follows:

as shown in fig. 3, the drum membrane top plate 2 and the intermediate rod 1 are detachably connected by arranging a connecting column 21 at the center of the drum membrane top plate 2, one end of the connecting column 21 is fixedly arranged on the drum membrane top plate 2, the connecting column 21 is perpendicular to the drum membrane top plate 2, the other end of the connecting column 21 is provided with a first insertion hole 22, and the first insertion hole 22 is used for inserting the intermediate rod 1.

As shown in fig. 4, the removable connection between the stirrup coupling 3 and the central rod 1 is made with a second insertion hole 31 in the stirrup coupling 3, the second insertion hole 31 being intended for the insertion of the central rod 1.

The utility model discloses a first jack 22 and second jack 31 hide the end of the body of rod 11, are about to the truncation edge of the body of rod 11 and hide, do not produce burr and sharp end, and the security is higher.

Example 2:

this embodiment further describes the rod body 11 on the basis of embodiment 1.

The adjacent rod bodies 11 are integrally formed, an annular groove 12 is arranged between the rod bodies 11, and the longitudinal section of the annular groove 12 is preferably V-shaped.

The V-shaped angle of the annular groove 12 is preferably 90 degrees, as shown in fig. 1, and the 90-degree annular groove 12 is more beneficial for truncating the shaft body 11 of the instrument.

It should be noted that the auditory ossicle implant prosthesis of the present invention may be a central bell, a central lobular bell, or an eccentric lobular with a groove dedicated for the malleus, as long as the rod body 11 constituting the middle rod 1 can be truncated, all within the protection scope of the present invention.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An ossicular implant prosthesis with adjustable length, comprising a middle rod made of titanium, a tympanic membrane roof and a stapes coupling, the middle rod being arranged between the tympanic membrane roof and the stapes coupling, the tympanic membrane roof being adapted to be coupled to a tympanic membrane, the stapes coupling being adapted to be coupled to a stapes, characterized in that the middle rod comprises several sections of a rod body which are connected end to end in sequence, the number of sections of the rod body being changeable.

2. An ossicular implant prosthesis adjustable in length according to claim 1, wherein the stem is integrally formed therewith.

3. An ossicular implant prosthesis adjustable in length according to claim 2, wherein an annular groove is provided between the rods.

4. An ossicular implant prosthesis having an adjustable length according to claim 3, wherein the annular groove is V-shaped in longitudinal cross-section.

5. An ossicular implant prosthesis having an adjustable length according to claim 4, wherein the V-shaped angle of the annular groove is 90 degrees.

6. An ossicular implant prosthesis adjustable in length according to claim 2, wherein the stem is 1mm, 1.5mm, 2mm or 2.5mm in length.

7. An ossicular implant prosthesis having an adjustable length according to any one of claims 1-6, wherein the intermediate rod is removably attached to the tympanic membrane ceiling.

8. An ossicular implant prosthesis with adjustable length according to claim 7, wherein a connection column is provided at the center of the tympanic membrane top plate, one end of the connection column is fixedly provided on the tympanic membrane top plate, the connection column is perpendicular to the tympanic membrane top plate, and the other end of the connection column is provided with a first insertion hole for inserting the middle rod.

9. A length adjustable ossicular implant prosthesis according to any one of claims 1-6, wherein the medial rod is removably connected with the stapes coupling.

10. An ossicular implant prosthesis adjustable in length according to claim 9, wherein the stapes coupling is provided with a second receptacle for insertion of the intermediate rod.