Adjustable prosthesis adaptive to human body annular cartilage replacement

Abstract

The utility model relates to the technical field of medical apparatus and instruments, and provides an adjustable prosthesis adaptive to human body annular cartilage replacement, which comprises a cartilage arch support which can be arranged at a to-be-repaired position of a human body annular cartilage; the cartilage arch support comprises the first supporting part and the second supporting part, and due to the fact that the first supporting part and the second supporting part are coaxially hinged, the size of the cartilage arch support can be adjusted by adjusting the included angle between the first supporting part and the second supporting part when the cartilage arch support is used for patients with different annular cartilage injury degrees. Therefore, the applicability of the prosthesis can be improved. Moreover, compared with personalized customization for different individuals, the prosthesis is beneficial to improving the efficiency of repair treatment, and the treatment cost is also reduced. Moreover, the first supporting part and the second supporting part are both of a curved-plate-shaped structure, so that the appearance of the whole cartilage arch support is more adaptive to the annular cartilage of the human body, and the cartilage arch support is attractive while being repaired.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to a kind of adjustable prosthesis of adaptation human cricoid cartilage replacement. BACKGROUND

[0002] Cricoid cartilage is like a ring, the front part is narrow and low, which is cricoid cartilage arch, and the back part is high and wide, which is cricoid cartilage plate. It is the only complete cartilage ring in the cartilage support of respiratory tract, and plays an important role in supporting the opening of respiratory tract. It is connected with thyroid cartilage by cricothyroid membrane upward, and connected with trachea downward.

[0003] Trauma, congenital stenosis, tumor disease and other causes can cause serious cricoid cartilage injury. Partial resection of soft tissue of cricoid cartilage arch can repair, but the injury of cricoid cartilage arch or cricoid cartilage plate with large range will lead to total laryngectomy because the whole larynx loses support, thereby affecting the functions of breathing, swallowing and pronunciation, and seriously reducing the quality of life. Therefore, it is necessary to repair the cricoid cartilage safely by using cricoid cartilage substitute. In the prior art, artificial prosthesis implantation is used to repair damaged cricoid cartilage. However, due to the difference in the degree of cricoid cartilage injury of patients, the applicability of conventional artificial prosthesis is low, and it is often necessary to customize for different individuals, which reduces the efficiency of repair treatment and increases the treatment cost. SUMMARY

[0004] Therefore, the technical problem to be solved by the utility model is that the applicability of conventional artificial prosthesis is low due to the difference in the degree of cricoid cartilage injury of patients in the prior art, and it is often necessary to customize for different individuals, which reduces the efficiency of repair treatment and increases the treatment cost, so as to provide a kind of adjustable prosthesis of adaptation human cricoid cartilage replacement.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0006] The utility model provides a kind of adjustable prosthesis of adaptation human cricoid cartilage replacement, comprising: cricoid cartilage arch support, for being arranged at the position to be repaired of human cricoid cartilage;The cricoid cartilage arch support includes first support part and second support part, the first support part and the second support part are coaxially hinged, the first support part and the second support part can move along the direction of approaching each other to reduce the included angle between them or moving away from each other to increase the included angle between them, to adjust the size of the cricoid cartilage arch support;The first support part and the second support part are both curved panel structure.

[0007] Further, the adjustable prosthesis for replacing the human annular cartilage further comprises a cartilage plate support, which is a curved plate structure; the cartilage plate support and the cartilage arch support are spliced to form an annular cartilage support for replacing the human annular cartilage as a whole.

[0008] Further, the cartilage plate support comprises a third support part and a fourth support part, which are coaxially hinged, and can move towards each other to reduce the included angle therebetween or move away from each other to increase the included angle therebetween, so as to adjust the size of the cartilage plate support.

[0009] Further, the first support part and the second support part can move towards each other to reduce the included angle therebetween, and the third support part and the fourth support part can move away from each other to increase the included angle therebetween; or, the first support part and the second support part can move away from each other to increase the included angle therebetween, and the third support part and the fourth support part can move towards each other to reduce the included angle therebetween.

[0010] Further, the edges of the first support part and the second support part are provided with positioning grooves; the third support part at least partially extends into the positioning groove on the first support part; and the fourth support part at least partially extends into the positioning groove on the second support part.

[0011] Further, the groove wall of the positioning groove is provided with a plurality of first connecting holes; the third support part and the positioning groove on the first support part are fixedly connected through screws and the first connecting holes; and the fourth support part and the positioning groove on the second support part are fixedly connected through screws and the first connecting holes.

[0012] Further, the edges of the first support part and the second support part are provided with a plurality of second connecting holes along the axis direction of the rotation shaft of the first support part and the second support part, and the cartilage arch support is connected and fixed with the thyroid cartilage and the trachea of the human body through the second connecting holes.

[0013] Further, the edges of the third support part and the fourth support part are provided with a plurality of third connecting holes along the axis direction of the rotation shaft of the third support part and the fourth support part, and the cartilage plate support is connected and fixed with the thyroid cartilage and the trachea of the human body through the third connecting holes.

[0014] Further, the plate surfaces of the first support part, the second support part, the third support part and the fourth support part are provided with a plurality of through holes.

[0015] Further, the cartilage arch support and the cartilage plate support are both made of metal titanium alloy material.

[0016] The technical scheme of the utility model has the following advantages:

[0017] The adjustable prosthesis for replacing human annular cartilage provided by the utility model comprises a cartilage arch support, which can be arranged at a to-be-repaired position of the human annular cartilage; the cartilage arch support comprises a first supporting part and a second supporting part, the first supporting part and the second supporting part are coaxially hingedly arranged, when patients with different annular cartilage injury degrees are faced, the size of the cartilage arch support can be adjusted by adjusting the included angle between the first supporting part and the second supporting part, so that the applicability of the prosthesis can be improved. Moreover, compared with individual customization for different individuals, the prosthesis is beneficial to improving the efficiency of repair treatment, and the treatment cost is also reduced. Moreover, since the first supporting part and the second supporting part are both curved plate structures, the shape of the whole cartilage arch support is more suitable for the human annular cartilage, and the repair can also take the appearance into account. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0019] Figure 1 It is a schematic view of the adjustable prosthesis for replacing human annular cartilage in an embodiment of the utility model.

[0020] Figure 2 It is a schematic view of the cartilage arch support in the adjustable prosthesis for replacing human annular cartilage in an embodiment of the utility model.

[0021] Figure 3 It is a schematic view of the cartilage arch support in the adjustable prosthesis for replacing human annular cartilage in another embodiment of the utility model.

[0022] Figure 4 It is a schematic view of the cartilage arch support in the adjustable prosthesis for replacing human annular cartilage in another embodiment of the utility model.

[0023] Figure 5 It is a schematic view of the adjustable prosthesis for replacing human annular cartilage in another embodiment of the utility model.

[0024] BRIEF DESCRIPTION OF DRAWINGS

[0025] 1, cartilage arch support; 2, human annular cartilage; 3, first support part; 4, second support part; 5, first connecting hole; 6, through hole; 7, positioning groove; 8, cartilage plate support; 9, third support part; 10, fourth support part. DETAILED DESCRIPTION

[0026] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0030] For example, Figure 1 , Figure 2As shown, the embodiment provides an adjustable prosthesis for fitting human annular cartilage replacement, which comprises a cartilage arch support 1, which is arranged at the position to be repaired of human annular cartilage 2; the cartilage arch support 1 comprises a first support part 3 and a second support part 4, which are coaxially hinged, for example, the first support part 3 and the second support part 4 can be in the structure of a butterfly after being connected. For example, during installation, taking the first support part 3 as an example, the first support part 3 can be installed on the upper half of the shaft through the sleeve connected thereto, and the sleeve and the shaft can be rotated in only one direction, for example, counterclockwise or clockwise, through the ratchet and pawl. Similarly, for the second support part 4, the second support part 4 can also be installed on the lower half of the shaft through the sleeve connected thereto, and the sleeve and the shaft can be rotated in only one direction, for example, counterclockwise or clockwise, through the ratchet and pawl. Finally, the first support part 3 and the second support part 4 can move in the direction of approaching each other to reduce the included angle between them or moving away from each other to increase the included angle between them, so as to adjust the size of the cartilage arch support 1. Of course, other existing limiting structures can also be used to realize the one-way rotation of the first support part 3 and the second support part 4 around the shaft. In use, first adjust the size of the cartilage arch support 1 according to the damage degree of the position to be repaired of the patient, and then fix it to the position to be repaired of the human annular cartilage 2. For example, the first support part 3 and the second support part 4 are both curved panel structures, and during use, the concave surfaces of the first support part 3 and the second support part 4 are both arranged towards the center of the human annular cartilage 2.

[0031] The adjustable prosthesis for fitting human annular cartilage replacement provided by the embodiment comprises a cartilage arch support 1, which can be arranged at the position to be repaired of human annular cartilage 2; the cartilage arch support 1 comprises a first support part 3 and a second support part 4, which are coaxially hinged, so that when facing patients with different degrees of annular cartilage damage, the size of the cartilage arch support 1 can be adjusted by adjusting the included angle between the first support part 3 and the second support part 4, thereby improving the applicability of the prosthesis. Moreover, compared with individual customization for different individuals, using the prosthesis can improve the efficiency of repair treatment and reduce treatment costs. Moreover, since the first support part 3 and the second support part 4 are both curved panel structures, the overall shape of the cartilage arch support 1 is more suitable for the annular cartilage of the human body, and the repair can also take into account the aesthetics.

[0032] As Figure 5As shown, the adjustable prosthesis for replacing the human annular cartilage further comprises a cartilage plate support 8, which is a curved plate structure; the cartilage plate support 8 is spliced with the cartilage arch support 1 to form an annular cartilage support for replacing the human annular cartilage 2 as a whole. In the actual repair process, some patients need to replace the entire annular cartilage, at this time, the cartilage arch support 1 and the cartilage plate support 8 in the present application can form a complete annular cartilage after splicing, which can retain the function of the patient's throat after replacement, so that the patient's life will not be greatly affected. Among them, the cartilage plate support 8 can be a whole curved plate, or it can be similar to the cartilage arch support 1 described above. In order to improve the applicability, for example, the cartilage plate support 8 can include a third support part 9 and a fourth support part 10, which are coaxially hinged, and the third support part 9 and the fourth support part 10 can move along the direction of approaching each other to reduce the included angle between them or moving away from each other to increase the included angle between them, so as to adjust the size of the cartilage plate support 8. Among them, the connection structure between the third support part 9 and the fourth support part 10 and the shaft can be the same as the connection structure between the first support part 3 and the second support part 4 and the shaft described above, which will not be repeated here. In this way, the size of the cartilage plate support 8 can be adaptively adjusted according to different patients.

[0033] For example, the first support part 3 and the second support part 4 can move along the direction of approaching each other to reduce the included angle between them, and the third support part 9 and the fourth support part 10 can move along the direction of moving away from each other to increase the included angle between them; or, the first support part 3 and the second support part 4 can move along the direction of moving away from each other to increase the included angle between them, and the third support part 9 and the fourth support part 10 can move along the direction of approaching each other to reduce the included angle between them. In this way, after the cartilage arch support 1 and the cartilage plate support 8 are spliced, the size of the entire annular cartilage will not change. For example, when the cartilage arch support 1 is about to change in size due to external force, but since the cartilage plate can only produce a size increasing movement, it will limit the cartilage arch support 1 to become smaller, so that the entire prosthesis remains in the repaired state, avoiding deformation in daily life and affecting the treatment effect.

[0034] For example, the first support part 3 and the second support part 4 can move along the direction of approaching each other to reduce the included angle between them, and the third support part 9 and the fourth support part 10 can move along the direction of moving away from each other to increase the included angle between them; or, the first support part 3 and the second support part 4 can move along the direction of moving away from each other to increase the included angle between them, and the third support part 9 and the fourth support part 10 can move along the direction of approaching each other to reduce the included angle between them. In this way, after the cartilage arch support 1 and the cartilage plate support 8 are spliced, the size of the entire annular cartilage will not change. For example, when the cartilage arch support 1 is about to change in size due to external force, but since the cartilage plate can only produce a size increasing movement, it will limit the cartilage arch support 1 to become smaller, so that the entire prosthesis remains in the repaired state, avoiding deformation in daily life and affecting the treatment effect. Figure 4As shown in the drawings, the edges of the first support part 3 and the second support part 4 are provided with positioning grooves 7; the third support part 9 at least partially extends into the positioning groove 7 on the first support part 3; and the fourth support part 10 at least partially extends into the positioning groove 7 on the second support part 4. Taking the first support part 3 as an example, the positioning groove 7 can be arranged on the side edge of the first support part 3 away from the second support part 4, the positioning groove 7 can be a U-shaped groove, and along the axis direction of the rotating shaft, the positioning groove 7 covers the entire side edge of the first support part 3 from top to bottom. Similarly, for the second support part 4, the positioning groove 7 can be arranged on the side edge of the second support part 4 away from the first support part 3, the positioning groove 7 can be a U-shaped groove, and along the axis direction of the rotating shaft, the positioning groove 7 covers the entire side edge of the second support part 4 from top to bottom. In use, the first support part 3 is connected with the third support part 9, and the second support part 4 is connected with the fourth support part 10, wherein the edge of the third support part 9 can extend into the positioning groove 7 on the first support part 3 and abut the groove bottom of the positioning groove 7, and the edge of the fourth support part 10 can extend into the positioning groove 7 on the second support part 4 and abut the groove bottom of the positioning groove 7. Such an arrangement is conducive to improving the strength of the connection between the two.

[0035] As shown in the drawings, Figure 2 wherein a plurality of first connecting holes 5 can be arranged on the groove wall of the positioning groove 7, for example, two first connecting holes 5 can be arranged one above the other on the groove wall of the positioning groove 7, and the third support part 9 is fixedly connected with the first connecting hole 5 on the positioning groove 7 of the first support part 3 through a screw. Similarly, the fourth support part 10 is fixedly connected with the first connecting hole 5 on the positioning groove 7 of the second support part 4 through a screw.

[0036] wherein a plurality of second connecting holes are arranged on the edges of the first support part 3 and the second support part 4 along the axis direction of the rotating shaft of the first support part 3 and the second support part 4, and the cartilage arch support 1 is connected and fixed with the thyroid cartilage and trachea of the human body through the second connecting holes. That is, a plurality of second connecting holes can be arranged on the upper and lower ends of the entire prosthesis, and the actual positions of the second connecting holes can be designed according to the actual situation of the clinic. In use, the entire prosthesis can be connected and fixed with the thyroid cartilage and trachea by means of a screw and the second connecting hole.

[0037] wherein a plurality of third connecting holes are arranged on the edges of the third support part 9 and the fourth support part 10 along the axis direction of the rotating shaft of the third support part 9 and the fourth support part 10, and the cartilage plate support 8 is connected and fixed with the thyroid cartilage and trachea of the human body through the third connecting holes.

[0038] As shown in the drawings, Figure 3As shown, the first support part 3, the second support part 4, the third support part 9 and the fourth support part 10 are all provided with a plurality of through holes 6. For example, the through holes 6 can be arranged in an array, and the through holes 6 can be round holes or square holes, etc. The diameter of the through holes 6 can be between 1mm and 2mm. In this way, the blood and flesh on both sides of the plate surface can be kept in communication, which is helpful for the exchange of nutrients on both sides, and at the same time, the human tissues on both sides of the plate surface can grow together through the through holes 6 to become a whole.

[0039] The cartilage arch support 1 and the cartilage plate support 8 are both made of titanium alloy. For example, the cartilage arch support 1 and the cartilage plate support 8 can be made of any one of pure titanium, titanium alloy Ti6Al4V or stainless steel, which has good mechanical properties and corrosion resistance, and can improve the comfort of the patient after the operation.

[0040] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation to the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. An adjustable prosthesis adapted for fitting a human cricoid cartilage replacement, characterized in that, Comprise: A cartilage arch support (1) for setting at a position to be repaired of human body annular cartilage (2); The cartilage arch support (1) comprises a first support part (3) and a second support part (4), the first support part (3) and the second support part (4) are coaxially hinged, the first support part (3) and the second support part (4) can move along the direction of approaching each other to reduce the included angle between them or moving away from each other to increase the included angle between them, so as to adjust the size of the cartilage arch support (1); the first support part (3) and the second support part (4) are both curved panel structure.

2. The adjustable prosthesis for replacing human body annular cartilage according to claim 1, wherein, Further comprising a cartilage plate support (8), the cartilage plate support (8) is curved panel structure; The cartilage plate support (8) and the cartilage arch support (1) are spliced to form an annular cartilage support for replacing the human body annular cartilage (2) as a whole.

3. The adjustable prosthesis for replacing human body annular cartilage according to claim 2, wherein, The cartilage plate support (8) comprises a third support part (9) and a fourth support part (10), the third support part (9) and the fourth support part (10) are coaxially hinged, the third support part (9) and the fourth support part (10) can move along the direction of approaching each other to reduce the included angle between them or moving away from each other to increase the included angle between them, so as to adjust the size of the cartilage plate support (8).

4. The adjustable prosthesis for replacing human body annular cartilage according to claim 3, wherein, The first support part (3) and the second support part (4) can move along the direction of approaching each other to reduce the included angle between them, and the third support part (9) and the fourth support part (10) can move along the direction of moving away from each other to increase the included angle between them; Or, the first support part (3) and the second support part (4) can move along the direction of moving away from each other to increase the included angle between them, and the third support part (9) and the fourth support part (10) can move along the direction of approaching each other to reduce the included angle between them.

5. The adjustable prosthesis for replacing human body annular cartilage according to claim 3, wherein, The edges of the first support part (3) and the second support part (4) are provided with positioning grooves (7); The third support part (9) at least partially extends into the positioning groove (7) on the first support part (3); The fourth support part (10) at least partially extends into the positioning groove (7) on the second support part (4).

6. The adjustable prosthesis for replacing human body annular cartilage according to claim 5, wherein, A plurality of first connecting holes (5) are arranged on the groove wall of the positioning groove (7); The third support part (9) and the positioning groove (7) on the first support part (3) are fixedly connected through the first connecting holes (5) and screws; The fourth support part (10) and the positioning groove (7) on the second support part (4) are fixedly connected through the first connecting holes (5) and screws.

7. The adjustable prosthesis for replacing human cricoid cartilage according to claim 1, wherein, a plurality of second connecting holes are arranged on the edges of the first support part (3) and the second support part (4) along the axis direction of the rotation shafts of the first support part (3) and the second support part (4), and the cartilage arch support (1) is connected and fixed with the thyroid cartilage and the trachea of the human body through the second connecting holes.

8. The adjustable prosthesis for replacing human cricoid cartilage according to claim 3, wherein, a plurality of third connecting holes are arranged on the edges of the third support part (9) and the fourth support part (10) along the axis direction of the rotation shafts of the third support part (9) and the fourth support part (10), and the cartilage plate support (8) is connected and fixed with the thyroid cartilage and the trachea of the human body through the third connecting holes.

9. The adjustable prosthesis for replacing human cricoid cartilage according to claim 3, wherein, a plurality of through holes (6) are arranged on the plate surfaces of the first support part (3), the second support part (4), the third support part (9) and the fourth support part (10).

10. The adjustable prosthesis for replacing human cricoid cartilage according to claim 2, wherein, the cartilage arch support (1) and the cartilage plate support (8) are both made of metal titanium alloy.

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