Positioning measuring scale for ossicular replacement prosthesis

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to a positioning measuring scale for an ossicular replacement prosthesis, which is mainly used in an ossicular replacement prosthesis operation and mainly comprises a base with a top end face; the measuring rod is arranged on the top end face of the base, the axis of the measuring rod is perpendicular to the top end face, and the measuring rod is provided with an identification structure; the method mainly solves the problem that the length of the ossicular is improperly selected due to the fact that the selected ossicular prosthesis depends on experience and naked eyes when the artificial ossicular is selected in the middle ear microsurgery. The device has the effects of measuring the distance between the tympanic membrane and the hammer bone of a patient and the stapes base plate / the distance between the tympanic membrane and the stapes so as to select an ossicular prosthesis with a proper length for implantation in an operation, ensuring the stability of the ossicular prosthesis after being placed, improving the sound transmission effect and reducing complications.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical instruments, and particularly relates to a positioning measuring scale for ossicular replacement prosthesis. BACKGROUND

[0002] The ossicular chain is a sound transmission structure between the tympanic membrane and the inner ear, and damage and fixation of the ossicular chain caused by any reason (otitis media, middle ear cholesteatoma, trauma, congenital ossicular chain deformity, otosclerosis, etc.) will affect the transmission of sound and cause conductive hearing loss. The ossicular chain is mainly composed of the malleus, the incus and the stapes. The incus needs to be replaced by a partial ossicular replacement prosthesis (PORP) due to damage or loss, the structure on the incus and stapes plate needs to be replaced by a total ossicular replacement prosthesis (TORP) due to damage or loss, and the stapes footplate needs to be perforated and a piston prosthesis is placed due to fixation. Due to individual differences, the appropriate length and placement position of the ossicular replacement prosthesis also vary during surgery. For the selection of artificial ossicles in middle ear microsurgery, surgeons have always relied on experience and visual observation, but this subjective estimation method often leads to improper selection of the length of the ossicles. Too short ossicles will reduce the stability of the ossicular placement, reduce the postoperative hearing improvement effect and cause postoperative ossicular dislocation and other complications. Too long ossicles are easy to enter the vestibular pool, leading to sensorineural hearing loss, which not only causes waste of resources, but also increases the economic and psychological burden (secondary surgery) of the patient.

[0003] The utility model provides a positioning measuring scale for ossicular replacement prosthesis in view of the above problems. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the problems in the background art, the utility model adopts the following technical scheme:

[0005] The positioning measuring scale for ossicular replacement prosthesis comprises:

[0006] The base has a top end face;

[0007] A measuring rod is arranged on the top end face of the base, and the axis of the measuring rod is perpendicular to the top end face, wherein the measuring rod has an identification structure; the identification structure comprises a plurality of grooves and a plurality of protrusions formed on the outer wall of the measuring rod, and the plurality of grooves and the plurality of protrusions are arranged in an array along the extension direction of the axis of the measuring rod; or the identification structure comprises a plurality of first scale grooves and a plurality of second scale grooves formed on the outer wall of the measuring rod, and the plurality of first scale grooves and the plurality of second scale grooves are arranged in an array along the extension direction of the axis of the measuring rod.

[0008] Further, there is a protrusion between each two adjacent grooves, and the distance between the protrusion and the two grooves is the same.

[0009] Further, the distance between the protrusion and the adjacent groove is 0.5 mm.

[0010] Further, there is a second scale groove between each two adjacent first scale grooves, and the distance between the second scale groove and the two adjacent first scale grooves is the same.

[0011] Further, the circumference of the first scale groove is 1 / 3 of the circumference of the measuring rod, and the circumference of the second scale groove is the same as the circumference of the measuring rod.

[0012] In some embodiments of the present application, the base further has a bottom end face opposite to the top end face, wherein the bottom end face is provided with a plurality of bridge portions arranged in a circumferential array with the axis of the measuring rod as the reference, and there is a distance between adjacent bridge portions.

[0013] In some embodiments of the present application, the base is in a cylindrical shape, and a cavity is formed at one end of the base towards the top end face of the base.

[0014] In some embodiments of the present application, the base and the measuring rod are fixedly connected, and the base and the measuring rod are made of the same material.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. In the process of replacing the whole auditory ossicle prosthesis for a patient, the cylindrical base is arranged, and the position of the base is adjusted during the operation, so as to preliminarily position the placement position of the auditory ossicle prosthesis, and the first scale groove and the second scale groove or the protrusion and the groove arranged on the measuring rod are used to measure the distance between the tympanic membrane and the malleus and stapes bottom plate of the patient, so as to select the appropriate length of the auditory ossicle prosthesis for placement in the operation.

[0017] 2. In the partial ossicular replacement prosthesis surgery for patients, by setting a plurality of bridging parts in a circumferential array on the bottom end face of the base, the distance between the stapes of the patient and the tympanic membrane is measured by placing the bridging part on the stapes of the patient and measuring the distance by the measuring rod during the surgery, so that the appropriate length of the ossicular prosthesis is selected and placed during the surgery, thereby ensuring the stability of the ossicular prosthesis after placement and reducing the occurrence of complications. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the recess and protrusion structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the base of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the measuring rod of the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of the bridging part of the utility model;

[0023] Figure 6 It is a schematic diagram of the structure of the measuring rod and the bridging part of the utility model;

[0024] Figure 7 It is a schematic diagram of the structure of the bridging part in the cross-sectional state of the utility model;

[0025] Figure 8 It is a schematic diagram of the structure of the first scale groove and the second scale groove of the utility model;

[0026] Figure 9 It is a schematic diagram of the structure of the first scale groove, the second scale groove and the bridging part of the utility model;

[0027] In the figure, 1, base; 11, top end face; 12, bridging part; 13, cavity; 2, measuring rod; 21, recess; 22, protrusion; 23, first scale groove; 24, second scale groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be described clearly and completely below through specific specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Those skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification. The utility model can also be implemented or applied through other different specific embodiments, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0029] Figure 1 And Figure 6 The main technical content of the embodiment is shown, and the specific embodiment provides a positioning measuring scale for an auditory ossicle replacement prosthesis, which comprises:

[0030] A base 1 has a top end face 11;

[0031] A measuring rod 2 is arranged on the top end face 11 of the base 1, and the axis of the measuring rod 2 is perpendicular to the top end face 11, wherein the measuring rod 2 has an identification structure.

[0032] In use, the patient is in a lateral position, and the instrument is placed in the ear canal of the patient. When the patient is partially replaced with an auditory ossicle, the base 1 is bridged with the stapes of the patient, at this time, the measuring rod 2 is perpendicular to the stapes floor of the patient, and the distance between the stapes of the patient and the tympanic membrane is judged under a microscope or an endoscope according to the identification structure, so as to obtain the length of the auditory ossicle prosthesis suitable for the patient; when the patient is totally replaced with an auditory ossicle, the base 1 is placed on the stapes floor of the patient, and the distance between the tympanic membrane of the patient and the malleus and the stapes floor is measured under a microscope or an endoscope by the measuring rod 2, so as to obtain the length of the auditory ossicle prosthesis suitable for the patient.

[0033] As can be understood by those skilled in the art, when the patient's anvil is damaged or missing, partial auditory ossicle replacement is needed, and when the patient's anvil and stapes floor structure are damaged or missing, total auditory ossicle replacement is needed; according to the two cases, the base 1 is arranged differently, for example, referring to Figure 5—7, when the patient has an injury or loss of the incus, and needs to perform partial ossicular replacement prosthesis, in order to measure the distance between the stapes and the tympanic membrane of the patient, the base 1 also has a bottom end face opposite the top end face 11, wherein the bottom end face is provided with a plurality of bridges 12, which are arranged in a circumferential array with the axis of the measuring rod 2 as the reference, and there is a distance between adjacent bridges 12; more specifically, there are 3-4 bridges 12, and the bridges 12 are in the form of plates; in use, the bridges 12 are placed on the stapes of the patient, at this time, most of the stapes of the patient is located between each bridge 12, so as to form a gripping state for the stapes of the patient, so that the base 1 remains stable during use, thereby avoiding deviation of the measuring rod 2 when measuring the distance between the stapes and the tympanic membrane of the patient, so as to ensure the accuracy of the measurement data; in addition, under this operation, the measured data is the distance between the bottom end face and the position on the measuring rod 2 corresponding to the tympanic membrane; preferably, the distance between the bottom end face of the base 1 and the top end face 11 is at most 1mm.

[0034] When the patient has an injury or loss of the incus and stapes plate structure, full ossicular replacement prosthesis needs to be performed, in order to measure the distance between the tympanic membrane and the malleus and the stapes bottom plate of the patient, in this embodiment, reference is made to Figure 1 —4, the base 1 is in the form of a cylinder, wherein a cavity 13 is formed at one end of the base 1 in the direction of the top end face 11 of the base 1; in use, the base 1 is placed on the stapes bottom plate of the patient, which is convenient for observing the optimal position of the bridge between the tympanic membrane and the malleus and the stapes bottom plate after the full ossicular replacement prosthesis is implanted, at this time, the axis of the measuring rod 2 is perpendicular to the stapes bottom plate, so as to facilitate the surgeon to measure the distance between the tympanic membrane and the stapes bottom plate through the measuring rod 2; more specifically, the length of the base 1 is 1mm, and the diameter of the base 1 is greater than the diameter of the measuring rod 2, so as to avoid the center of gravity of the measuring rod 2 from being unstable during use; preferably, the diameter of the base 1 is between 0.8mm and 1mm.

[0035] In addition, under this arrangement, it can also be applied to the measurement before the piston type stapes prosthesis is implanted, specifically, the base 1 is placed on the stapes bottom plate, and the surgeon observes the position of the incus corresponding to the position on the measuring rod 2 under a microscope or an endoscope, and combines the height of the base 1 with it, so as to obtain the distance between the incus and the stapes bottom plate.

[0036] In this embodiment, the measuring scale is disposable, wherein the base 1 and the measuring rod 2 are fixedly connected, and the base 1 and the measuring rod 2 are made of the same material; specifically, the base 1 and the measuring rod 2 are integrally formed.

[0037] Specifically, the base 1 and the measuring rod 2 are made of one of polycarbonate, polyurethane and polyvinyl chloride; preferably, the base 1 and the measuring rod 2 are made of polycarbonate.

[0038] Reference Figure 1 -2 and Figure 5 -6, in this embodiment, the identification structure comprises: a plurality of grooves 21 and a plurality of protrusions 22 formed on the outer wall of the measuring rod 2, wherein the plurality of grooves 21 and the plurality of protrusions 22 are arranged in an array along the axial extension direction of the measuring rod 2, and more specifically, there is one protrusion 22 between every two adjacent grooves 21, and the distance between the protrusion 22 and the two grooves 21 is the same, so that the plurality of grooves 21 and the plurality of protrusions 22 are staggered, and each groove 21 and each protrusion 22 represents a length unit, and specifically, the distance between the protrusion 22 and the adjacent groove 21 is 0.5mm; in use, after the base 1 is placed stably, the length of the required ossicular prosthesis is obtained according to the position corresponding to the measuring rod 2 of the patient's tympanic membrane or incus and the length of the base 1.

[0039] More specifically, when the base 1 has a bridging portion 12, the total length of the measuring rod 2 is 3mm; when the base 1 is cylindrical, the length of the measuring rod 2 is 7mm, so that different models of the instrument are selected by the operator for use according to different surgical needs (total ossicular replacement, partial ossicular replacement and piston type stapes prosthesis replacement) in use.

[0040] Reference Figure 8 -9, alternatively, the identification structure comprises: a plurality of first scale grooves 23 and a plurality of second scale grooves 24 formed on the outer wall of the measuring rod 2, wherein the plurality of first scale grooves 23 and the plurality of second scale grooves 24 are arranged in an array along the axial extension direction of the measuring rod 2; more specifically, there is one second scale groove 24 between every two adjacent first scale grooves 23, and the distance between the second scale groove 24 and the two adjacent first scale grooves 23 is the same; in use, after the base 1 is placed stably, the length of the required ossicular prosthesis is obtained according to the position corresponding to the measuring rod 2 of the patient's tympanic membrane or incus and the length of the base 1.

[0041] More specifically, the circumference of the first scale groove 23 is 1 / 3 of the circumference of the measuring rod 2, and the circumference of the second scale groove 24 is the same as the circumference of the measuring rod 2, and in this arrangement, the first scale grooves 23 and the second scale grooves 24 of different lengths are more easily distinguished by the operator to interpret the measured length.

[0042] More specifically, the distance between the adjacent first scale groove 23 and the second scale groove 24 is 0.5mm.

[0043] The use method of the utility model:

[0044] 1、According to the operation of the patient, select different models of the instrument, for example, in the need for patients to partial ossicle prosthesis replacement; First, the measuring scale with the bridge is put into the patient's ear canal;

[0045] 2, the hook needle is used to adjust the position of the base in the patient's ear canal, so that the base is connected with the stapes of the patient, at this time, the stapes of the patient is located between each bridge, the measuring rod is perpendicular to the stapes of the patient;

[0046] 3, the operator views the patient's tympanic membrane on the measuring rod under the microscope or endoscope, and reads the distance between the stapes and the tympanic membrane of the patient through the identification structure;

[0047] 4, then the instrument is removed from the patient's ear canal, and the appropriate length of the prosthesis is selected according to the measured data and placed in the patient's ear.

[0048] The above description of the embodiments is only for the understanding of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved, and these improvements will also fall within the scope of protection of the present application.

Claims

1. A positioning measuring ruler for an ossicular replacement prosthesis, characterized in that, It includes: The base has a top end face; A measuring rod is disposed on the top end face of the base, the axis of the measuring rod being perpendicular to the top end face, wherein the measuring rod has an identification structure; The marking structure includes: a plurality of grooves and a plurality of protrusions formed on the outer wall of the measuring rod, wherein the plurality of grooves and the plurality of protrusions are arranged in an array along the axial direction of the measuring rod; or The marking structure includes a plurality of first scale grooves and a plurality of second scale grooves formed on the outer wall of the measuring rod, wherein the plurality of first scale grooves and the plurality of second scale grooves are arranged in an array along the extension direction of the measuring rod axis.

2. The ossicular replacement prosthesis according to claim 1 uses a positioning measuring ruler, characterized in that, The base also has a bottom end face opposite to the top end face, wherein the bottom end face is provided with a plurality of bridging portions, the plurality of bridging portions being arranged in a circular array with reference to the axis of the measuring rod, and there is a distance between adjacent bridging portions.

3. The ossicle replacement prosthesis according to claim 1 uses a positioning measuring ruler, characterized in that, The base is cylindrical, and a cavity is formed at one end of the base toward the top end face of the base.

4. The ossicle replacement prosthesis according to claim 1 uses a positioning measuring ruler, characterized in that, The base is fixedly connected to the measuring rod, wherein the base and the measuring rod are made of the same material.

5. The ossicular replacement prosthesis according to claim 1 uses a positioning measuring ruler, characterized in that, There is a protrusion between each pair of adjacent grooves, wherein the protrusion is at the same distance from the two grooves.

6. The ossicular replacement prosthesis according to claim 5 uses a positioning measuring ruler, characterized in that, The distance between the protrusion and the adjacent groove is 0.5 mm.

7. The ossicular replacement prosthesis according to claim 1 uses a positioning measuring ruler, characterized in that, There is a second scale groove between each pair of adjacent first scale grooves, wherein the distance between the second scale groove and the two adjacent first scale grooves is the same.

8. The ossicle replacement prosthesis according to claim 7 uses a positioning measuring ruler, characterized in that, The circumference of the first scale groove is 1 / 3 of the circumference of the measuring rod, and the circumference of the second scale groove is the same as the circumference of the measuring rod.

Images