Anti-slip and anti-falling ossicular prosthesis

Abstract

The utility model relates to an anti-skidding and anti-dropping ossicular prosthesis, which comprises a prosthesis head, a connecting piece, a prosthesis shaft and a prosthesis base, the prosthesis head is fixedly connected with the upper end of the connecting piece, the bottom of the connecting piece is provided with an inward concave first cavity, and the prosthesis shaft comprises a shaft body positioned at the center, a shaft body upper end part positioned at the upper part and a shaft body lower end part positioned at the lower part. The two ends of the shaft body are fixedly connected with the upper end of the shaft body and the lower end of the shaft body respectively, the first concave cavity is connected with the upper end of the shaft body in an angle-adjustable and adaptive mode, the prosthesis base is provided with a recessed second concave cavity, and the second concave cavity is connected with the lower end of the shaft body in an angle-adjustable and adaptive mode, so that the angle between the prosthesis head and the prosthesis shaft is flexibly adjusted. The head of the prosthesis is made of high-molecular polyether-ether-ketone materials, the contact compatibility of the ossicular prosthesis and the tympanic membrane can be optimized, and grooves are formed in the two sides of the prosthesis base and used for being connected with the protruding parts of stapes in a matched mode. The problems that an existing ossicular prosthesis is non-adjustable in placement angle, poor in material compatibility and poor in prosthesis stability in clinic are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, concretely relates to a kind of anti-skid and anti-drop ossicular prosthesis. BACKGROUND

[0002] The existing ossicular prosthesis usually includes fixed prosthesis head and connecting rod, mainly used to replace the ossicles in the middle ear due to pathological changes or injury. However, the existing ossicular prosthesis is usually made into different length sizes to adapt to the natural difference between the anatomical distance of the middle ear structure of different patients, so the size specifications of the existing ossicular prosthesis are various, which brings certain complexity to the surgical operation. In addition, most of the ossicular prosthesis is fixed structure, which cannot adjust the angle of connecting rod and head, and some other ossicular prosthesis is connected together by different materials, which will affect the sound transmission effect of the ossicular prosthesis due to the different elastic modulus and density of different materials, and may cause displacement or other complications due to incorrect angle or material mismatch after installation in surgery. Based on this, the utility model provides an anti-skid and anti-drop ossicular prosthesis to solve the problems of the existing ossicular prosthesis in clinical application, such as unadjustable placement angle, poor material compatibility and poor prosthesis stability, to improve the stability and adaptability of the prosthesis, so as to reduce the occurrence of postoperative complications. SUMMARY

[0003] The technical problem to be solved by the utility model is the problems of the existing ossicular prosthesis in clinical application, such as unadjustable placement angle, poor material compatibility and poor prosthesis stability.

[0004] To solve the problems in the prior art, an anti-skid and anti-drop ossicular prosthesis is disclosed, which comprises a prosthesis head, a connecting piece, a prosthesis shaft and a prosthesis base. The prosthesis head and the upper end of the connecting piece are fixedly connected. The bottom of the connecting piece is provided with a first concave cavity. The prosthesis shaft comprises a shaft body located in the center, a shaft body upper end located above and a shaft body lower end located below. The two ends of the shaft body are fixedly connected with the shaft body upper end and the shaft body lower end respectively. The first concave cavity is adaptively connected with the shaft body upper end at an adjustable angle. The prosthesis base is provided with a second concave cavity. The second concave cavity is adaptively connected with the shaft body lower end at an adjustable angle. The prosthesis base is provided with grooves on both sides for adaptively connecting with the protruding part of the stapes.

[0005] Further, the prosthesis head is made of high molecular polyether ether ketone material to optimize the contact compatibility of the ossicular prosthesis and the tympanic membrane.

[0006] Further, the prosthesis head is circular or elliptical.

[0007] Further, a plurality of openings are further provided on the inner side of the prosthesis head.

[0008] Further, the shaft upper end of the shaft body of the prosthesis and the shaft lower end of the shaft body of the prosthesis are spherical.

[0009] Further, the shaft upper end and the shaft lower end are coated with a layer of silica gel material outside to increase the anti-skid performance of the ossicular prosthesis.

[0010] Further, each component of the ossicular prosthesis can be detachably installed.

[0011] Further, the shaft upper end allows the angle adjustment range between the prosthesis head and the prosthesis shaft to be 0-30 degrees.

[0012] Further, the shaft lower end allows the angle adjustment range between the prosthesis head and the prosthesis shaft to be 0-15 degrees.

[0013] Further, the prosthesis base is gold-plated to improve electrical conductivity and improve hearing effect.

[0014] The beneficial effects that the embodiments of the present specification can bring include but are not limited to: (1) the first recessed cavity at the bottom of the connecting piece and the angle adjustable adaptive connection of the shaft upper end of the prosthesis shaft, the second recessed cavity at the prosthesis base and the angle adjustable adaptive connection of the shaft lower end of the prosthesis shaft, can realize the adjustability of the angle between the prosthesis head and the prosthesis shaft, so as to facilitate adjustment according to the anatomical structure of the middle ear of the patient, ensure the accurate fitting of the ossicular prosthesis and the tympanic membrane of the patient, and reduce the risk of displacement caused by incorrect angle placement; (2) the recesses provided on both sides of the prosthesis base can match the residual convex parts on the stapes floor, so that the prosthesis base and the stapes floor are more closely connected, not only improving the stability of the ossicular prosthesis during installation, but also reducing the risk of prosthesis displacement caused by postoperative scar tension or ventilation problems; (3) the prosthesis head is made of high molecular polyether ether ketone material, which can optimize the contact compatibility of the ossicular prosthesis and the tympanic membrane, reduce the risk of tympanic membrane displacement and perforation, and reduce the risk of postoperative infection; (4) the prosthesis head is circular or oval, which can avoid damage to the tympanic membrane caused by acute angles when placed obliquely; (5) the prosthesis head is provided with a plurality of openings inside, which can not only expand the field of view during surgical operation and reduce the blind area, but also reduce the weight of the ossicular prosthesis and improve the flexibility of the ossicular prosthesis; (6) the shaft upper end and the shaft lower end of the prosthesis shaft are coated with a layer of silica gel material outside, which can increase the anti-skid performance of the ossicular prosthesis and effectively avoid prosthesis displacement caused by external force or internal pressure; (7) each component of the ossicular prosthesis can be detachably installed, which is convenient for doctors to adjust during surgery as needed; (8) the prosthesis base is gold-plated, which can improve electrical conductivity and improve hearing effect. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to make the technical field personnel better understand the utility model scheme, the following will be combined with the drawings in the embodiment of the utility model, the technical scheme in the embodiment of the utility model is described clearly and completely, obviously, the described embodiment is only a part of the embodiment of the utility model, and is not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor should belong to the protection scope of the utility model.

[0016] Figure 1 It is the overall structure schematic diagram of the utility model;

[0017] Figure 2 It is the structure schematic diagram under the working state of the embodiment of the utility model;

[0018] Figure 3 It is Figure 2 The local enlarged view of B of

[0019] Figure 4 It is the local enlarged view of C of Figure 2

[0020] Figure 5 It is the plane view of one angle of the overall structure of the utility model;

[0021] Figure 6 It is Figure 5 The sectional view along A-A line;

[0022] In the drawing: 1-prosthesis head, 11-opening, 2-connector, 21-first recess, 3-prosthesis shaft, 31-shaft body, 32-shaft body upper end, 33-shaft body lower end, 4-prosthesis base, 41-second recess, 42-groove, 5-tympanic membrane, 6-stapes. DETAILED DESCRIPTION

[0023] In order to make the technical field personnel better understand the utility model scheme, the following will be combined with the drawings in the embodiment of the utility model, the technical scheme in the embodiment of the utility model is described clearly and completely, obviously, the described embodiment is only a part of the embodiment of the utility model, and is not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor should belong to the protection scope of the utility model.

[0024] ​The terms "one embodiment" or "an embodiment" as may be used herein refer to a specific implementation, or a specific feature, structure, or characteristic, within at least one implementation of the present application. In this document, the terms "proximal", "inner", "distal", and the like, can refer to the orientation or position of an item as shown by the drawings, and are merely used for convenience and for describing particular embodiments of the present application, and not to limit or imply that the device or item has to have a specific orientation, be constructed and operated in a particular manner, and / or has to be used in a specific way. Furthermore, the terms "first", "second", and the like, merely mean "first", "second", and the like, and are not intended to indicate or imply a relative importance or a specific order of importance. Thus, a feature or structure that is "first" can also be "second", and vice versa, depending on the context in which it is used. Furthermore, the terms "first", "second", and the like, are used to identify similar objects in the same figure and are not necessarily used to describe a specific sequence or order of importance of the features so identified. It will be understood that the use of data herein is not perforce a limitation on the present application, and that one or more features of a particular embodiment can be employed with or in

[0025] To solve the problems in the prior art, the application provides an anti-skid and anti-displacement ossicular prosthesis, specifically, as shown in Figures 1-6 The ossicular prosthesis comprises a prosthesis head 1, a connecting piece 2, a prosthesis shaft 3 and a prosthesis base 4. The prosthesis head 1 is fixedly connected to the upper end of the connecting piece 2. The bottom of the connecting piece 2 is provided with a first concave cavity 21. The prosthesis shaft 3 comprises a shaft body 31 located at the center, a shaft upper end 32 located at the upper end of the shaft body 31 and a shaft lower end 33 located at the lower end of the shaft body 31. The two ends of the shaft body 31 are fixedly connected to the shaft upper end 32 and the shaft lower end 33 respectively. The first concave cavity 21 is in angularly adjustable and adaptive connection with the shaft upper end 32. The prosthesis base 4 is provided with a second concave cavity 41. The second concave cavity 41 is in angularly adjustable and adaptive connection with the shaft lower end 33, so as to flexibly adjust the angle between the prosthesis head 1 and the prosthesis shaft 3.

[0026] In an implementable scheme, the shaft upper end 32 allows the angle adjustment range between the prosthesis head 1 and the prosthesis shaft 3 to be 0-30 degrees, and the shaft lower end 33 allows the angle adjustment range between the prosthesis head 1 and the prosthesis shaft 3 to be 0-15 degrees.

[0027] Preferably, continuing to refer to Figure 1 and Figure 4 The prosthesis base 4 is provided with grooves 42 on both sides, which can be matched with the residual convex part on the floor of the stapes 6, so as to more closely connect the prosthesis base 4 and the floor of the stapes 6. This not only improves the stability of the ossicular prosthesis during installation, but also reduces the risk of prosthesis displacement caused by postoperative scar tension or ventilation problems.

[0028] Preferably, the prosthesis head 1 is made of high-molecular polyetheretherketone material to optimize the contact compatibility between the ossicular prosthesis and the tympanic membrane 5 , reduce the risk of displacement and perforation of the tympanic membrane 5 , and reduce the risk of postoperative infection.

[0029] In one embodiment, the prosthetic head 1 is configured to be circular, and in another embodiment, the prosthetic head 1 is configured to be elliptical, so as to avoid damage to the eardrum 5 caused by the sharp angle generated when the prosthetic head 1 is tilted.

[0030] Preferably, continue to refer to Figure 1 A plurality of openings 11 are also provided on the inner side of the prosthesis head 1, which can expand the field of view during surgical operation and reduce blind spots, and can also reduce the weight of the ossicular prosthesis and improve the flexibility of the ossicular prosthesis.

[0031] Further, continue to refer to Figure 3 and Figure 4 The upper end portion 32 of the prosthetic shaft 3 and the lower end portion 33 of the prosthetic shaft 3 are spherical.

[0032] Preferably, the upper end portion 32 of the prosthetic shaft 3 and the lower end portion 33 of the prosthetic shaft 3 are coated with a layer of silicone material, which can increase the anti-slip performance of the ossicular prosthesis and effectively avoid the displacement of the prosthesis due to external force or internal pressure.

[0033] Preferably, the components of the ossicular prosthesis are detachable and installable, so that the doctor can adjust them as needed during the operation.

[0034] Preferably, the prosthesis base 4 is gold-plated to increase electrical conductivity and improve hearing performance.

[0035] Continue to refer to Figure 2The working state of the embodiment is as follows: after the components of the ossicular prosthesis are connected, according to the middle ear dissection structure of the patient, the adjustable angle between the prosthesis head 1 and the prosthesis shaft 3 is realized by adjusting the upper end 32 of the shaft in the first cavity 21 and the lower end 33 of the shaft in the second cavity 41, and after the optimal angle is reached, the installation of the ossicular prosthesis is carried out, so that the prosthesis head 1 is accurately fitted with the tympanic membrane 5 of the patient, after the external sound is transmitted into the tympanic membrane 5, the tympanic membrane 5 collects sound energy, and then the sound is transmitted to the stapes 6 through the ossicular prosthesis, and the bottom plate of the stapes 6 receives and transmits the sound to the inner ear. It can be understood that the ossicular prosthesis provided in the embodiment can realize flexible adjustment of the multi-angle between the prosthesis head 1 and the prosthesis shaft 3, adapt to the middle ear dissection structure of different patients, so that the ossicular prosthesis is accurately fitted with the tympanic membrane 5 of the patient, reduces the risk of displacement caused by incorrect angle placement, on the other hand, the prosthesis head 1 also adopts a high molecular polyether ether ketone material, which can optimize the contact compatibility of the ossicular prosthesis and the tympanic membrane 5, reduce the risk of displacement of the tympanic membrane 5, reduce the risk of postoperative infection, in addition, the recess 41 is arranged on the prosthesis base 4, so that the recess 41 can be matched with the residual convex part on the floor of the stapes 6, so that the prosthesis base 4 and the bottom plate of the stapes 6 are more closely connected, not only improving the stability of the ossicular prosthesis during installation, but also reducing the risk of prosthesis displacement caused by scar tension or ventilation problems after operation, and reducing the occurrence of complications.

[0036] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A non-slip and non-detachable ossicular prosthesis, characterized in that: The ossicular prosthesis comprises a prosthetic head (1), a connecting member (2), a prosthetic shaft (3) and a prosthetic base (4); the prosthetic head (1) and the upper end of the connecting member (2) are fixedly connected; the bottom of the connecting member (2) is provided with a sunken first cavity (21); the prosthetic shaft (3) comprises a shaft body (31) located in the center, an upper end portion (32) of the shaft body located above and a lower end portion (33) of the shaft body located below; the two ends of the shaft body (31) are respectively connected to the shaft body (31) and the lower end portion (33) of the shaft body (33); The upper end portion (32) and the lower end portion (33) of the shaft body are fixedly connected, the first concave cavity (21) and the upper end portion (32) of the shaft body are adaptively connected in an angle-adjustable manner, the prosthesis base (4) is provided with a recessed second concave cavity (41), the second concave cavity (41) and the lower end portion (33) of the shaft body are adaptively connected in an angle-adjustable manner, and grooves (42) are provided on both sides of the prosthesis base (4), and the grooves (42) are used for adaptively connecting with the raised portion of the stapes (6).

2. The anti-slip and anti-detachment ossicular prosthesis according to claim 1, characterized in that: The prosthetic head (1) is made of a high-molecular-weight polyetheretherketone material, and is used to optimize the contact compatibility between the ossicular prosthesis and the eardrum (5).

3. The anti-slip and anti-detachment ossicular prosthesis according to claim 1 or 2, characterized in that: The prosthetic head (1) is circular or elliptical.

4. The anti-slip and anti-detachment ossicular prosthesis according to claim 2, characterized in that: The inner side of the prosthetic head (1) is also provided with a plurality of openings (11).

5. The anti-slip and anti-detachment ossicular prosthesis according to claim 1, characterized in that: The upper end portion (32) of the prosthetic shaft (3) and the lower end portion (33) of the prosthetic shaft (3) are spherical.

6. The anti-slip and anti-detachment ossicular prosthesis according to claim 5, characterized in that: The upper end portion (32) of the shaft and the lower end portion (33) of the shaft are coated with a layer of silicone material to increase the anti-slip performance of the ossicular prosthesis.

7. The anti-slip and anti-detachment ossicular prosthesis according to claim 1, characterized in that: The components of the ossicular prosthesis can be detachably installed.

8. The anti-slip and anti-detachment ossicular prosthesis according to claim 1 or 2, characterized in that: The upper end portion (32) of the shaft allows the angle between the prosthesis head (1) and the prosthesis shaft (3) to be adjusted within a range of 0 degrees to 30 degrees.

9. The anti-slip and anti-detachment ossicular prosthesis according to claim 1 or 2, characterized in that: The lower end portion (33) of the shaft body allows the angle between the prosthesis head (1) and the prosthesis shaft (3) to be adjusted within a range of 0 degrees to 15 degrees.

10. The anti-slip and anti-detachment ossicular prosthesis according to claim 1, characterized in that: The prosthesis base (4) is gold-plated to increase electrical conductivity and improve hearing effect.

Images