Length fixation device for prosthesis of auditory ossicle

Abstract

The present invention provides a length fixing device for an ossicular prosthesis for fixing an adjusted length of an ossicular prosthesis to connect the incus and the stapes, comprising: a base portion having a seating groove for seating the ossicular prosthesis; and a pressure fixing portion having a punch for pressing the ossicular prosthesis placed in the seating groove.

Description

Technology Field

[0001] The present invention relates to a length fixing device for an ossicular prosthesis that fixes the adjusted length of an adjustable ossicular prosthesis. Background Technology

[0002] Generally, external sounds enter the external auditory canal and are transmitted to the eardrum; the vibrations of the eardrum are transmitted to the inner ear through the ossicles, where they are converted into electrical nerve signals and transmitted to the cerebrum via nerves.

[0003] As such, the ossicles play an important role in transmitting sound energy by connecting the eardrum and the inner ear.

[0004] Therefore, if the ossicles are damaged or their function is impaired, an implant is inserted to replace them.

[0005] However, due to variations in the length of damaged ossicles depending on the patient, there is a cumbersome problem in that multiple prostheses of various lengths must be prepared, and a prosthesis of the appropriate length must be selected and used during the procedure.

[0006] To address this, the prosthesis can be made adjustable in length; however, while it is essential to fix the adjusted prosthesis to prevent length deformation after adjustment, there is a problem in that the process of fixing it is not easy.

[0007] Related technology regarding such ossicular prostheses is disclosed in Korean Published Patent Application No. 10-2021-0076382 (June 24, 2021). The problem to be solved

[0008] The purpose of the present invention is to provide a length fixation device for an ossicular prosthesis that enables easy and accurate fixation of the adjusted length of the ossicular prosthesis while it is adjusted to replace the ossicles of the patient undergoing the procedure. means of solving the problem

[0009] The present invention provides a length fixing device for an ossicular prosthesis for fixing an adjusted length of an ossicular prosthesis to connect an incus and a stapes, comprising: a base portion having a seating groove for seating the ossicular prosthesis; and a pressure fixing portion having a punch for pressing the ossicular prosthesis placed in the seating groove.

[0010] Additionally, the above-mentioned pressure fixing member includes a horizontal moving member positioned to be movable in a horizontal direction on the base member, and a punch positioned to be movable in a horizontal direction on the side of the horizontal moving member, wherein the tip of the punch may have a cross-sectional shape that narrows in width as it extends forward.

[0011] In addition, the tip of the above punch may have a triangular prism shape.

[0012] In addition, the base part is further provided with a guide body having a guide groove that guides the horizontal moving member and the punch to move horizontally along the same straight line, and the horizontal moving member can be connected to the guide groove by a screw part.

[0013] Additionally, it may further include a seating fixing part that is positioned on the base part and fixes the ossicular prosthesis so that it does not detach when pressed by the pressure fixing part.

[0014] In addition, the above-mentioned mounting fixing part may include at least one mounting fixing member protruding from one edge of the mounting groove to the upper part of the base part.

[0015] In addition, the above-mentioned mounting bracket may have a curved shape.

[0016] In addition, the above-mentioned mounting fixing member may include a mounting fixing shaft member positioned to be movable in a vertical direction on the base member, and a pressure fixing head provided at the top of the mounting fixing shaft member.

[0017] In addition, the lower end of the above-mentioned mounting fixing shaft can be connected to the base part by a screw part.

[0018] In addition, the above-mentioned pressure fixing head may be further equipped with a vertical punch projection that presses the ossicular prosthesis when moving downward.

[0019] In addition, the base portion may be further provided with a length measuring portion to determine the length of the ossicular prosthesis.

[0020] In addition, the base portion may further be provided with a cutting guide groove connected to a seating groove. Effects of the invention

[0021] The length fixing device for an ossicular prosthesis according to the present invention adjusts the length of the ossicular prosthesis seated in the seating groove of the base part, and then presses the ossicular prosthesis with a punch of the pressure fixing part so that the head part and the coupler part of the ossicular prosthesis are fixed through caulking, thereby enabling the adjusted length of the ossicular prosthesis to be fixed at an easy and accurate position. Brief explanation of the drawing

[0022] FIG. 1 is a plan view of a length fixation device for an ossicular prosthesis according to one embodiment of the present invention. Figure 2 is a partial enlarged view of the length fixation device for an ossicular prosthesis shown in Figure 1. FIGS. 3 and 4 are partially enlarged front views of a length fixation device for an ossicular prosthesis according to another embodiment of the present invention. FIG. 5 is an installation state diagram of an ossicular prosthesis fixed through a length fixing device for an ossicular prosthesis according to one embodiment of the present invention. FIGS. 6 to 10 are cross-sectional views of an ossicular prosthesis fixed through a length fixing device for an ossicular prosthesis according to one embodiment of the present invention. Specific details for implementing the invention

[0023] Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0024] Referring to FIGS. 1 to 10, a length fixing device (1000) for an ossicular prosthesis according to one embodiment of the present invention may include a base portion (1100) and a pressure fixing portion (1200). The length fixing device for an ossicular prosthesis of this embodiment performs the function of fixing the length of an ossicular prosthesis (10) that is adjusted to be placed between the stapes (1) and the incus (2) to replace at least a part of the ossicles. Here, the length fixing device (1000) for an ossicular prosthesis enables stable fixation through caulking that applies pressure to the head portion (100, 100a, 100b) while the length of the ossicular prosthesis (10), composed of a head portion (100, 100a, 100b) and a coupler portion (200, 200a, 200b), is adjusted.

[0025] Referring to FIG. 5, the ossicular prosthesis (10) is positioned to connect the stapes (1) and the incus (2) to replace at least a portion of the ossicles, and sound energy is stably transmitted from the eardrum to the inner ear.

[0026] Looking at such a length-adjustable ossicular prosthesis (10), the head portion (100) can be positioned to be in contact with the stapes (1).

[0027] Referring to FIG. 6, one side of the head portion (100) is positioned to be in contact with one side of the spine (1), and the other side of the head portion (100) can be connected to the coupler portion (200).

[0028] The head portion (100) may include a tubular body (110) having a hollow (111) that is open on both sides.

[0029] For example, the above-mentioned hollow (111) may be provided with a structure that is open on one side and the other side in the longitudinal direction of the tubular body (110).

[0030] As another example, as shown in FIG. 7, the hollow (111) may be provided in a structure that is opened only on one side in the longitudinal direction of the tubular body (110).

[0031] The above coupler part (200) can be positioned to be in contact with the incus (2).

[0032] One side of the above-mentioned coupler part (200) is positioned to be in contact with the pinna (2), and the other side of the coupler part (200) can be positioned in an inserted state inside the head part (100).

[0033] In this way, the total length of the ossicle prosthesis can be set according to the extent to which the coupler part (200) is inserted into the inner side of the head part (100).

[0034] For example, the coupler part (200) may have a hook shape.

[0035] The above coupler part (200) may include a connector shaft (210) and a connector (220).

[0036] One end of the connector shaft (210) can be connected to a connector (220).

[0037] The above connector (220) is provided at one end of the connector shaft (210) and comes into contact with the pinnate bone (2).

[0038] For example, the above connector (220) has a ring shape with an opening on one side, so that a stable hook can be achieved on the cusp.

[0039] Additionally, as shown in FIG. 10, a cutting groove (101, 201) may be provided on the outer surface of the head portion (100) and on the surface of the connector shaft (210) of the coupler portion (200) to facilitate the cutting operation when adjusting the length through cutting.

[0040] FIG. 8 is an ossicular prosthesis according to another embodiment, which may include a head portion (100a) and a coupler portion (200a).

[0041] Here, the head portion (100a) may include a tubular body (110a) and a control pin (120a).

[0042] The above tubular body (110a) has a hollow (111a), and a threaded portion (112a) may be provided on the inner surface of the tubular body (110a).

[0043] The above adjustment pin (120a) may be inserted and disposed in at least a portion of the hollow (111a) on one side of the tubular body (110a).

[0044] A screw portion (121a) is provided on the outer surface of the above-mentioned adjustment pin (120a), and is connected to a screw portion (112a) provided in the hollow (111a) of the tubular body (110a).

[0045] Here, the adjustment pin (120a) controls the degree of insertion into the hollow (111a) according to the rotational direction when inserted into one side of the hollow (111a), thereby serving to limit the maximum depth to which the coupler part (200a) can be inserted into the other side of the hollow (111a) of the head part (100a).

[0046] Additionally, at one end of the adjustment pin (120a), a stopper end (122a) may be provided to prevent the adjustment pin (120a) from being inserted further into the hollow (111a) by being caught on the end of the tubular body (110a) when inserted to a certain depth into the hollow (111a) of the tubular body (110a).

[0047] The above coupler portion (200a) can be positioned to be in contact with the incus.

[0048] One side of the above-mentioned coupler part (200a) is positioned to be in contact with the pinna (2), and the other side of the coupler part (200a) can be positioned in an inserted state inside the head part (100a).

[0049] In this way, the total length of the ossicle prosthesis can be set according to the extent to which the coupler portion (200a) is inserted into the inner side of the head portion (100a).

[0050] For example, the coupler part (200a) may have a hook shape.

[0051] The above coupler part (200a) may include a connector shaft (210a) and a connector (220a).

[0052] One end of the connector shaft (210a) can be connected to a connector (220a).

[0053] In this case, the connector shaft (210a) may be provided with a screw portion (211a) that is coupled to a screw portion (112a) formed in the hollow (111a) of the head portion (100a).

[0054] In this way, the connector shaft (210a) is connected to the hollow (111a) of the head part (100a) through the screw part (111a, 211a), and the total length of the ossicle prosthesis can be adjusted according to the degree of insertion into the hollow (111a) depending on the rotational direction of the connector shaft (210a).

[0055] The above connector (220a) is provided at one end of the connector shaft (210a) and comes into contact with the pinnate bone (2).

[0056] For example, the above connector (220a) has a ring shape with an opening on one side, so that it can be stably hooked onto the pinnate bone (2).

[0057] FIG. 9 is an ossicular prosthesis according to another embodiment, which may include a head portion (100b) and a coupler portion (200b).

[0058] Here, the head portion (100b) may include a head body (110b) having an insertion groove (111b) formed therein.

[0059] Here, a screw portion (112b) may be provided on the inner surface of the head body (110b) where the insertion groove (111b) is located.

[0060] The above coupler portion (200b) can be positioned to be in contact with the incus (2).

[0061] One side of the above-mentioned coupler part (200b) is positioned to be in contact with the pinna (2), and the other side of the coupler part (200b) can be positioned in an inserted state inside the head part (100b).

[0062] In this way, the total length of the ossicular prosthesis (10) can be set according to the extent to which the coupler part (200b) is inserted into the inner side of the head part (100b).

[0063] For example, the coupler part (200b) may have a hook shape.

[0064] The above coupler part (200b) may include a connector shaft (210b) and a connector (220b).

[0065] One end of the connector shaft (210b) can be connected to a connector (220b).

[0066] In this case, the connector shaft (210b) may be provided with a screw portion (211b) that is coupled with a screw portion (112b) formed in an insertion groove (111b) of the head portion (100b).

[0067] In this way, the connector shaft (210b) is connected to the insertion groove (111b) of the head part (100b) and the screw part (112b, 211b), so the total length of the ossicle prosthesis can be adjusted according to the degree of insertion into the insertion groove (111b) depending on the rotational direction of the connector shaft (210b).

[0068] The above connector (220b) is provided at one end of the connector shaft (210b) and comes into contact with the pinnate bone (2).

[0069] For example, the above connector (220b) has a ring shape with an opening on one side, so that it can be stably hooked onto the pinnate bone (2).

[0070] The length fixation device (1000) for an ossicular prosthesis of one embodiment is described as follows.

[0071] First, the base portion (1100) is a part that supports the ossicular prosthesis (10) in a seated state.

[0072] The above-mentioned base portion (1100) may be formed of a cuboid-shaped plate, but is not limited thereto.

[0073] Additionally, a seating groove (1110) may be provided on the upper surface of the base portion (1100) to allow the ossicular prosthesis (10) to be seated in an inserted state.

[0074] The above-mentioned seating groove (1110) may have a cross-section corresponding to the outer surface shape of the head portion (100, 100a, 100b) and the coupler portion (200, 200a, 200b) so as to maximize the contact area with the head portion (100, 100a, 100b) and the coupler portion (200, 200a, 200b) of the ossicular prosthesis (10).

[0075] For example, the above-mentioned mounting groove (1110) may be provided with a curved cross-sectional shape.

[0076] Here, the mounting groove (1110) may be composed of a first mounting groove (1110a) on which a head portion (100, 100a, 100b) is mounted, and a second mounting groove (1110b) on which a coupler portion (200, 200a, 200b) is mounted, each connected to both sides in the longitudinal direction of the first mounting groove (1110a).

[0077] Additionally, the base portion (1100) may be provided with a guide body (1120) having a guide groove (1121) in the horizontal direction.

[0078] The above guide groove (1121) serves to guide the horizontal moving member (1210) of the pressure fixing part (1200), which will be described later, and the punch (1220) to move horizontally along the same straight line.

[0079] Here, a screw portion may be provided in a portion of the guide groove (1121), and the screw portion of the guide groove (1121) screws into the horizontal moving member (1210) to enable movement in the forward and backward directions on the guide body (1120) according to the rotational direction of the horizontal moving member (1210).

[0080] In addition, the base portion (1100) may be provided with a length measuring portion (1130) that allows the length of the ossicular prosthesis (10) seated in the seating groove (1110) to be determined.

[0081] For example, the length measuring part (1130) may be a ruler positioned parallel to the seating groove (1110).

[0082] In addition, a cutting guide groove (1140) communicating with a seating groove (1110) may be provided on the upper surface of the base part (1100).

[0083] For example, the above cutting guide groove (1140) can be connected to the second seating groove (1110b).

[0084] Here, the cutting guide groove (1140) can be positioned vertically in the seating groove (1110).

[0085] In this way, the above-mentioned cutting guide groove (1140) guides the movement of a cutting means, such as a cutter (not shown), so that a portion of the coupler part (200, 200a, 200b), which is not needed in addition to the adjusted length of the ossicular prosthesis (10) to be described later by the pressure fixing part (1200), can be easily cut by a cutting means.

[0086] In addition, a fastening hole (1150) with a screw portion may be provided on the upper surface of the base portion (1100).

[0087] The above-mentioned fastening hole (1150) allows the lower end of the mounting fixing shaft (2310) of the mounting fixing part (2300), which will be described later, to be connected by screw fastening.

[0088] Additionally, a tool groove (1111) for storing a tool (20), such as a wrench, may be provided on the upper surface of the base portion (1100). Furthermore, a prosthetic storage groove (1112) capable of storing at least one of a head portion (100, 100a, 100b) or a coupler portion (200, 200a, 200b) constituting an ossicular prosthesis (10) may be provided on the upper surface of the base portion (1100).

[0089] Additionally, a punch guide groove (1113) communicating with the first seating groove (1110a) of the seating groove (1110) may be provided on the upper surface of the base portion (1100). This punch guide groove (1113) enables the tip of the punch (1220) to stably contact the outer surface of the head portion (100, 100a, 100b) of the ossicular prosthesis (10) placed in the seating groove (1110) when the ossicular prosthesis (10) is pressed with a punch (1220) to be described later.

[0090] Additionally, the upper surface of the base portion (1100) may be provided with a detachment insertion groove (1114) communicating with the first seating groove (1110a) of the seating groove (1110). This detachment insertion groove (1114) functions to allow the user to easily detach the ossicular prosthesis (10) from the seating groove (1110) when the adjusted length of the ossicular prosthesis (10) is fixed through the punch (1220).

[0091] The above-mentioned pressure fixing part (1200) can be placed on the base part (1100).

[0092] The above-mentioned pressure fixing part (1200) presses the ossicular prosthesis (10) positioned in the seating groove (1110) in a length-adjusted state and performs the function of fixing the adjusted ossicular prosthesis (10) so that its length is no longer changed.

[0093] That is, the above-mentioned pressure fixing part (1200) performs a caulking operation to provide a fixing structure by applying pressure to the head part (100, 100a, 100b) of the ossicular prosthesis (10) placed in the seating groove (1110) and deforming the head part (100, 100a, 100b) and the coupler part (200, 200a, 200b).

[0094] The above-mentioned pressure fixing part (1200) may include a horizontal moving platform (1210) and a punch (1220).

[0095] The above horizontal moving platform (1210) can be positioned to be movable in a horizontal direction on the base part (1100).

[0096] The above horizontal moving member (1210) has a straight rod shape, and a screw portion is provided on the outer surface of the horizontal moving member (1210) so that it can be connected to the guide groove (1121) of the guide body (1120) by screw fastening.

[0097] The above-mentioned horizontal moving member (1210) moves from the guide body (1120) by rotation and serves to push the punch (1220) toward the ossicular prosthesis (10) placed in the seating groove (1110).

[0098] Here, a handle head (1210a) that facilitates easy gripping by a worker may be provided on one side in the longitudinal direction of the horizontal moving platform (1210).

[0099] The above punch (1220) can be slidably positioned in the guide groove (1121) of the guide body (1120).

[0100] The above punch (1220) presses the ossicular prosthesis (10) placed in the seating groove (1110) by the horizontal moving member (1210) when the horizontal moving member (1210) moves on the guide body (1120) through the rotation of the horizontal moving member (1210).

[0101] Here, one end of the punch (1220), that is, the tip adjacent to the seating groove (1110), may have a cross-sectional shape that becomes narrower as it extends forward.

[0102] For example, the tip of the punch (1220) has a triangular prism shape, so that when the ossicular prosthesis (10) placed in the seating groove (1110) is pressed, fixation is achieved through the caulking of the head part (100, 100a, 100b) and the coupler part (200, 200a, 200b).

[0103] In addition, the length fixing device (1000) for an ossicular prosthesis of one embodiment may be provided with a seating fixing part (1300) that stably fixes the ossicular prosthesis (10) so that it does not detach from the seating groove (1110) when the ossicular prosthesis (10) placed in the seating groove (1110) is pressed by the punch (1220) of the pressure fixing part (1200).

[0104] As shown in FIG. 3, the seating fixing part (1300) may include at least one seating fixing member (1310) protruding from one edge of the seating groove (1110) to the upper part of the base part (1100).

[0105] Here, the above-mentioned mounting bracket (1310) may have a curved shape so as to be in close contact with the outer surface of the head portion (100, 100a, 100b) of the ossicular prosthesis (10) placed in the mounting groove (1110).

[0106] FIG. 4 may include a seating fixing part (1300a) of another embodiment, a seating fixing shaft part (1310a), and a pressure fixing head (1320a).

[0107] The above-mentioned fixed shaft portion (1310a) can be positioned so as to be movable in a vertical direction on the base portion (1100).

[0108] For example, a screw portion is provided at the bottom of the above-mentioned mounting fixing shaft portion (1310a), and the bottom of the mounting fixing shaft portion (1310a) can be screw-fastened to a fastening hole (1150) provided in the base portion (1100).

[0109] In this way, the above-mentioned fixed shaft portion (1310a) can move vertically through rotation on the base portion (1100).

[0110] The above pressure fixing head (1320a) can be provided at the top of the seating fixing shaft part (1310a).

[0111] At this time, the outer surface of the pressure fixing head (1320a) may be provided to protrude more than the outer surface of the seating fixing shaft part (1310a).

[0112] The above-mentioned pressure fixing head (1320a) enables the head portion (100, 100a, 100b) of the ossicular prosthesis (10) placed in the seating groove (1110) to maintain a stable fixed state by transmitting pressure in the vertical direction when it moves downward through the rotation of the seating fixing shaft portion (1310a).

[0113] Additionally, a vertical punch projection (1321a) may be provided on the bottom surface of the above-mentioned pressure fixing head (1320a).

[0114] When the head portion (100, 100a, 100b) of the ossicular prosthesis (10) is pressed by the pressure fixing head (1320a) of the above-mentioned vertical punch projection (1321a), additional fixation is achieved through caulking of the head portion (100, 100a, 100b) and the coupler portion (200, 200a, 200b).

[0115] Here, the vertical punch projection (1321a) may have a cross-sectional shape in which the width narrows from the upper side to the lower side.

[0116] For example, the vertical punch projection (1321a) may have a triangular prism shape.

[0117] In this way, the length fixing device (1000) for an ossicular prosthesis of one embodiment adjusts the length of the ossicular prosthesis (10) seated in the seating groove (1110) of the base part (1100), and then presses the ossicular prosthesis (10) with the punch (1220) of the pressure fixing part (1200) so that the head part (100, 100a, 100b) and the coupler part (200, 200a, 200b) of the ossicular prosthesis (10) are fixed through caulking, thereby enabling the adjusted length of the ossicular prosthesis (10) to be fixed at an easy and accurate position.

[0118] The present invention has been described with reference to embodiments illustrated in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims. Explanation of the symbols

[0119] 10: Ossicular prosthesis 100, 100a, 100b: Head portion 200, 200a, 200b: Coupler section 210, 210a, 210b: Connector shaft 220, 220a, 220b: Connector 1000: Length fixation device for ossicular prostheses 1100: Base part 1110: Seating groove 1120: Guide body 1130: Length measuring part 1140: Cutting guide groove 1150: Fastening hole 1200: Pressure fixing part 1210: Horizontal moving platform 1220: Punch 1300, 1300a: Seating fixing part 1310: Mounting fixing bracket 1310a: Mounting fixing shaft part 1320a: Pressure fixing head

Claims

Claim 1 A length fixing device for an ossicular prosthesis that fixes the adjusted length of the ossicular prosthesis to connect the incus and the stapes, comprising: a base portion provided with a seating groove for seating the ossicular prosthesis; and a pressure fixing portion provided with a punch for pressing the ossicular prosthesis placed in the seating groove. Claim 2 A length fixing device for an ossicular prosthesis according to claim 1, wherein the pressure fixing part comprises a horizontal moving member disposed horizontally movably on the base part and a punch disposed horizontally movably on the side of the horizontal moving member, and the tip of the punch has a cross-sectional shape that becomes narrower as it extends forward. Claim 3 A length fixing device for an ossicular prosthesis according to claim 2, wherein the tip of the punch has a triangular prism shape. Claim 4 In claim 2, the base portion is further provided with a guide body having a guide groove that guides the horizontal moving member and the punch to move horizontally along the same straight line, and the horizontal moving member is screw-coupled to the guide groove, thereby forming a length fixing device for an ossicular prosthesis. Claim 5 A length fixing device for an ossicular prosthesis according to claim 1, further comprising a seating fixing part disposed on the base part and fixing the ossicular prosthesis so as not to detach when the ossicular prosthesis is pressed by a pressure fixing part. Claim 6 A length fixing device for an ossicular prosthesis according to claim 5, wherein the seating fixing portion comprises at least one seating fixing member protruding from one edge of the seating groove to the upper part of the base portion. Claim 7 In claim 6, the mounting fixing member is a length fixing device for an ossicular prosthesis having a curved shape. Claim 8 A length fixing device for an ossicular prosthesis according to claim 5, wherein the seating fixing part comprises a seating fixing shaft part disposed to be movable in a vertical direction to the base part, and a pressure fixing head provided at the upper end of the seating fixing shaft part. Claim 9 A length fixing device for an ossicular prosthesis according to claim 8, wherein the lower end of the seating fixing shaft portion is screw-coupled to the base portion. Claim 10 A length fixing device for an ossicular prosthesis according to claim 8, wherein the pressure fixing head further comprises a vertical punch projection that presses the ossicular prosthesis when moving downward. Claim 11 A length fixing device for an ossicular prosthesis according to claim 1, wherein the base portion is further equipped with a length measuring portion to determine the length of the ossicular prosthesis. Claim 12 A length fixing device for an ossicular prosthesis according to claim 1, wherein the base portion further comprises a cutting guide groove communicating with a seating groove.

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