Insertion-type sternal plate

Abstract

Disclosed is an insertion-type sternal plate, comprising a first connecting member (1) and a second connecting member (2). The first connecting member (1) comprises an insertion plate (11). A lower end surface of the insertion plate (11) is provided with several first anti-retraction teeth (111). The second connecting member (2) comprises a connection end (21). The connecting end (21) comprises an insertion hole (212). A bottom surface of the insertion hole (212) is provided with second anti-retraction teeth (213). The insertion plate (11) is suitable for being fitted with the insertion hole (212), so as to realize connection between the first connecting member (1) and the second connecting member (2) by means of meshing of the first anti-retraction teeth (111) with the second anti-retraction teeth (213). The number of the first anti-retraction teeth (111) exceeds that of the second anti-retraction teeth (213). The insertion-type sternal plate is made of polyether ether ketone or carbon fiber-reinforced modified polyether ether ketone. The insertion-type sternal plate realizes connection between the first connecting member (1) and the second connecting member (2) by means of fitting of the insertion plate (11) with the insertion hole (212). The connection length of the insertion plate (11) can be adjusted according to the size of the sternum, such that the insertion-type sternal plate is applicable to sterna of various sizes, which helps to improve versatility of the insertion-type sternal plate.

Description

A sternum plate with inserts Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to an insert sternum plate. Background Art

[0002] Median thoracotomy refers to the use of a median sternal approach to perform cardiac and major vascular surgery and mediastinal tumor resection surgery. Therefore, median thoracotomy usually requires a complete or partial longitudinal incision of the sternum from the center of the sternum. After the operation is completed, the sternum needs to be closed and fixed.

[0003] Currently, a sternal plate is commonly used to close and stabilize the sternum after median thoracotomy surgery. The basic structure of a sternal plate typically consists of two connecting pieces with claw structures. The claw structures on the two connecting pieces are positioned opposite each other. During use, the two claw structures close the sternum, and then fasteners are used to connect the two connecting pieces to achieve sternal closure and fixation.

[0004] Existing sternum plates are connected by fasteners, and the position of the fasteners cannot be changed. Therefore, the size of the sternum plate cannot be changed. Each model of sternum plate can only be used for sternums within a certain size range. However, due to individual differences, the size of the sternums of different patients is different, resulting in a small range of application of the sternum plate and poor universal performance. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: in order to solve the problem of poor versatility of sternum boards in the prior art, the present invention provides a plug-in sternum board, which adopts the method of matching a plug-in plate with a plug-in through hole to realize the connection of two connecting parts. During use, the connection length of the plug-in plate can be adjusted according to the patient's sternum size, so that the size of the plug-in sternum board can be adjusted according to the sternum size, thereby expanding its scope of application, improving its versatility, and solving the problem of poor versatility of sternum boards in the prior art.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a plug-in sternum plate, comprising a first connecting member and a second connecting member; the first connecting member comprises a plug-in plate; the lower end surface of the plug-in plate is provided with a plurality of first stop teeth; the second connecting member comprises a connecting end; the connecting end comprises a connecting end body, and a plug-in hole provided on the connecting end body; a second stop tooth is provided on the bottom surface of the plug-in hole; the plug-in plate is suitable for cooperating with the plug-in hole to realize the connection between the first connecting member and the second connecting member through the engagement of the first stop tooth and the second stop tooth; the number of the first stop teeth is greater than the number of the second stop teeth; the material of the plug-in sternum plate is polyetheretherketone, or carbon fiber reinforced modified polyetheretherketone.

[0007] Optionally, the first outer side surface of the first retaining tooth is a slope.

[0008] Optionally, the second outer side surface of the second retaining tooth is a slope.

[0009] Optionally, a plug connector is provided at the front end of the plug board, and the plug connector is an arc-shaped structure.

[0010] Optionally, limiting flanges are provided on both sides of the plug board; and a first limiting groove adapted to the limiting flanges is provided in the plug hole.

[0011] Optionally, the thickness of the limiting flange is smaller than the thickness of the first limiting groove, and a slot is formed between the limiting flange and the top surface of the first limiting groove; the connecting end further includes an insert adapted to the slot.

[0012] Optionally, the connecting section of the insert is a conical structure.

[0013] Optionally, the taper of the connecting section is a Morse taper.

[0014] Optionally, the length of the connecting section is 7 mm.

[0015] Optionally, hand-pushing parts are provided on both sides of the connecting end body.

[0016] The beneficial effects of the present invention are as follows: the plug-in sternum plate provided by the present invention realizes the connection between the first connecting member and the second connecting member by cooperating with the plug-in plate and the plug-in hole. Since the number of the first anti-recession teeth on the plug-in plate is greater than the number of the second anti-recession teeth in the plug-in hole, the connection length of the plug-in plate can be adjusted according to the size of the sternum, so that the plug-in sternum plate can be suitable for sternums of various sizes, which helps to expand its scope of use and improve its versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and examples.

[0018] Figure 1 is a schematic structural diagram of the insert sternum plate of the present invention; Figure 2 is an exploded view of the insert sternum plate of the present invention; Figure 3 is a schematic structural diagram of the first connecting member of the present invention; Figure 4 is a schematic structural diagram of the first connecting member of the present invention; Figure 5 is a schematic structural diagram of the second connecting member of the present invention; Figure 6 is a schematic structural diagram of the insert of the present invention; Figure 7 is an assembly schematic diagram of the first connecting member and the plug-in hole of the present invention; Figure 8 is a partial enlarged view of point A in Figure 7.

[0019] In the figure: 1-first connecting member; 11-plug-in plate; 111-first anti-retraction tooth; 1111-first outer side surface; 112-plug connector; 113-plug flange; 12-first claw structure; 2-second connecting member; 21-connecting end; 211-connecting end body; 2111-hand push portion; 212-plug-in hole; 2121-first limiting groove; 213-second anti-retraction tooth; 2131-second outer side surface; 214-plug piece; 215-slot; 22-second claw structure. DETAILED DESCRIPTION

[0020] The present invention will now be described in further detail. The embodiments described below are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "first" and "second" are used only to simplify the description and should not be understood to indicate or imply relative importance, or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise specifically defined.

[0022] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" the first feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above," "above," and "above" the second feature includes the first feature being directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" the second feature includes the first feature being directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] In order to solve the problem of poor versatility of sternum plates in the prior art, the present invention provides an insert sternum plate, as shown in Figures 1 to 8, the insert sternum plate includes a first connecting member 1 and a second connecting member 2, and the first connecting member 1 is connected to the second connecting member 2 to close and fix the incised sternum; specifically, the first connecting member 1 includes a plug-in plate 11, which is connected to the second connecting member 2 through the plug-in plate 11; preferably, the first connecting member 1 also includes a first claw structure 12 connected to the plug-in plate 11; the lower end surface of the plug-in plate 11, that is, the end connected to the second connecting member 2, is provided with a plurality of first stop teeth 111; the second connecting member 2 includes a connecting end 21, which is connected to the first connecting member 1 through the connecting end 21; preferably, the second connecting member 2 also includes a connecting claw structure 12 connected to the connecting claw structure 12; A second claw structure 22 is connected to the connecting end 21; the connecting end 21 includes a connecting end body 211, and a plug-in hole 212 arranged on the connecting end body 211; the plug-in hole 212 is adapted to the plug-in board 11; a second stop tooth 213 is provided on the bottom surface of the plug-in hole 212; the plug-in board 11 is suitable for cooperating with the plug-in hole 212, so as to realize the connection between the first connecting member 1 and the second connecting member 2 by meshing the first stop tooth 111 with the second stop tooth 213; specifically, during the assembly process, the plug-in board 11 is inserted into the plug-in hole 212, and the first connecting member 1 and the second connecting member 2 are pushed in opposite directions, so that the first stop tooth 111 is meshed with the second stop tooth 213, thereby connecting the first connecting member 1 to the second connecting member 2.

[0025] After the first connecting member 1 and the second connecting member 2 are assembled at the sternum, when the patient coughs or exerts force, the connection between the first connecting member 1 and the second connecting member 2 will be subjected to a force in the left and right directions. Under the action of this force, the first connecting member 1 is easy to move in the direction away from the second connecting member 2. At the same time, the second connecting member 2 is easy to move in the direction away from the first connecting member 1, thereby slipping. Based on this, the present invention preferably has the first stop tooth 111 and the second stop tooth 213 distributed in a direction perpendicular to the assembly direction of the first connecting member 1 and the second connecting member 2. Further, when the connection between the first connecting member 1 and the second connecting member 2 is subjected to a force in the left and right directions, the first connecting member 1 and the second connecting member 2 are prevented from relative movement by the meshing first stop tooth 111 and the second stop tooth 213, thereby avoiding slipping and improving the stability of the connection.

[0026] In order to facilitate the closing and fixing of the sternum, the present invention preferably configures the first claw structure 12 and the second claw structure 22 to be hook-shaped structures suitable for closing and fixing the sternum, and after the first connecting member 1 and the second connecting member 2 are connected, the first claw structure 12 and the second claw structure 22 are arranged opposite to each other, respectively located on both sides of the sternum, forming a space suitable for accommodating the sternum therebetween, thereby achieving closing and fixing the sternum.

[0027] Furthermore, the present invention preferably has a greater number of first anti-recession teeth 111 than the number of second anti-recession teeth 213, so that during the assembly process, the first anti-recession teeth 111 on the plug-in plate 11 that engage with the second anti-recession teeth 213 can be selected according to the size of the patient's sternum, thereby adjusting the sternum accommodation space after assembly, so that each plug-in sternum plate can be adapted to sternums of various sizes, expanding its scope of use and improving its versatility.

[0028] The material of the preferred insert sternum plate of the present invention is polyetheretherketone, or carbon fiber reinforced modified polyetheretherketone. On the basis of ensuring the mechanical properties required by the sternum plate, on the one hand, after the assembly is completed, the excess plug-in plate can be cut by scissors and other instruments to make its length compatible with the sternum plate; on the other hand, for patients who need a second thoracotomy after certain thoracotomy operations, or who need to remove the sternum plate, tissue will grow on the sternum plate during the healing of the sternum, which makes it difficult to remove the sternum plate; polyetheretherketone, or carbon fiber reinforced modified polyetheretherketone material is selected, based on the characteristic that the material can be directly cut by scissors and other instruments, thereby reducing the difficulty of removing the mesh insert sternum plate.

[0029] The insert sternum plate provided by the present invention realizes the connection between the first connecting member 1 and the second connecting member 2 by cooperating with the plug-in plate 11 and the plug-in hole 212. Since the number of the first anti-recession teeth 111 on the plug-in plate 11 is greater than the number of the second anti-recession teeth 213 in the plug-in hole 212, the connection length of the plug-in plate 11 can be adjusted according to the size of the sternum, so that the insert sternum plate can be suitable for sternums of various sizes, which helps to expand its scope of use and improve its versatility.

[0030] In order to facilitate the connection between the plug board 11 and the connecting end 21, the present invention preferably configures the outer side surface of the first stop tooth 111, which is recorded as the first outer side surface 1111, to be a slope. Specifically, the outer side surface of the first stop tooth 111 herein specifically refers to the side surface of the first stop tooth 111 away from the first claw structure 12 after the plug board 11 and the connecting end 21 are assembled. By setting the first outer side surface 1111 of the first stop tooth 111 to be a slope, it helps to reduce the resistance during the assembly process, thereby reducing the difficulty of assembly.

[0031] Similarly, the present invention preferably configures the outer side surface of the second stop tooth 213, denoted as the second outer side surface 2131, to be a slope; specifically, the outer side surface of the second stop tooth 213 herein specifically refers to the side surface of the second stop tooth 213 away from the second claw structure 22 after the plug board 11 and the connecting end 21 are assembled; by setting the second outer side surface 2131 of the second stop tooth 213 to be a slope, it helps to reduce resistance during the assembly process, thereby reducing the difficulty of assembly.

[0032] To facilitate assembly, the present invention preferably provides a plug connector 112 at the front end of the plug board 11, that is, the end of the plug board 11 away from the first claw structure 12. The plug connector 112 can be triangular, arc-shaped, circular or other structures. In order to take into account both the convenience and aesthetics of assembly, the present invention preferably provides the plug connector 112 with an arc-shaped structure.

[0033] It should be noted that after the first connector 1 and the first connector 2 are assembled, the excess portion of one end of the plug connector 112 on the plug board 11 can be cut off, and the specific cutting length is determined according to the size of the sternum.

[0034] Furthermore, in the present invention, limiting flanges 113 are provided on both sides of the plug-in board 11; a limiting groove adapted to the limiting flange 113 is provided in the plug-in hole 212, which is recorded as a first limiting groove 2121; the present invention preferably has two limiting flanges 113 and two first limiting grooves 2121; during the assembly process, by inserting the limiting flange 113 into the first limiting groove 2121 and then pushing it, it helps to improve the assembly accuracy, reduce the assembly difficulty, and improve the assembly efficiency.

[0035] During the assembly process of the insert sternum plate provided by the present invention, the plug-in plate 11 needs to be inserted into the plug-in hole 212. Due to the presence of the first stop tooth 111 and the second stop tooth 213, a large thrust is required during the assembly process, which makes the assembly more difficult. For ease of assembly, the present invention preferably has a thickness of the limiting flange 113 that is smaller than the thickness of the first limiting groove 2121, that is, the distance between the top surface and the bottom surface of the first limiting groove 2121 is greater than the thickness of the limiting flange 113. Therefore, during the assembly process, the limiting flange 113 can be easily inserted into the first limiting groove 2121, and then the first stop tooth 111 can be meshed with the second stop tooth 213, which greatly reduces the difficulty of assembly. Since the thickness of the limiting flange 113 is less than the thickness of the first limiting groove 2121, after the first connecting member 1 and the second connecting member 2 are assembled by engaging the first stop tooth 111 with the second stop tooth 213, as shown in Figures 7 and 8, a gap is left between the limiting flange 113 and the top surface of the first limiting groove 2121, forming a slot 215. To ensure the stability of the sternum plate structure after assembly, the preferred connection end 21 of the present invention also includes an insert 214 that is compatible with the slot 215. By inserting the insert 214 into the slot 215, the gap is filled, reducing the risk of the plug board 11 falling out of the plug hole 212, further improving safety. During use, after the insert 214 is inserted into the slot 215, the portion of the insert 214 located outside the slot 215 can be cut as needed, and the cutting length can be determined according to actual needs.

[0036] For ease of assembly, as shown in FIG6 , the present invention preferably has a connecting section of the insert 214 , ie, a section of the insert 214 suitable for inserting into the slot 215 , of a tapered structure. Accordingly, the inner cavity of the slot 215 also has a tapered structure.

[0037] The connecting section is designed as a conical structure, and the insert 214 and the slot 215 are matched with each other through the taper, which can also reduce the difficulty of removing the insert 214 from the slot 215, making it easier to remove the insert sternum plate.

[0038] In order to further improve the stability of the connection, the present invention preferably adopts a Morse taper as the taper of the connecting section, so that through the Morse taper, according to the principle of friction, a static fit between the insert 214 and the slot 215 is achieved, thereby achieving self-locking of the insert 214, and ensuring the stability of the installation structure without the need for additional components.

[0039] Furthermore, in the present invention, the length of the preferred connecting section is 7 mm.

[0040] To facilitate operation, the present invention preferably provides hand-pushing parts 2111 on both sides of the connecting end body 211. The hand-pushing parts 2111 can be set to any structural form suitable for the operator to hold and push hard according to needs, so that the operator can use the hand-pushing parts 2111 to apply a thrust directed to the first connecting part 1 to the second connecting part 2 during the assembly process, thereby reducing the difficulty of operation.

[0041] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A sternum plate with inserts, characterized in that: It comprises a first connecting member (1) and a second connecting member (2); The first connecting member (1) comprises a plug-in board (11); The lower end surface of the plug board (11) is provided with a plurality of first stop teeth (111); The second connecting member (2) comprises a connecting end (21); The connecting end (21) comprises a connecting end body (211) and a plug hole (212) arranged on the connecting end body (211); A second stop tooth (213) is provided on the bottom surface of the plug hole (212); The plug board (11) is suitable for matching with the plug hole (212) so as to achieve connection between the first connecting member (1) and the second connecting member (2) through meshing of the first stop tooth (111) and the second stop tooth (213); The number of the first stop teeth (111) is greater than the number of the second stop teeth (213); The material of the insert sternum plate is polyetheretherketone, or carbon fiber reinforced modified polyetheretherketone.

2. The insert sternum plate according to claim 1, characterized in that: The first outer side surface (1111) of the first stop tooth (111) is an inclined surface.

3. The insert sternum plate according to claim 1, characterized in that: The second outer side surface (2131) of the second stop tooth (213) is an inclined surface.

4. The insert sternum plate according to claim 1, characterized in that: A plug connector (112) is provided at the front end of the plug board (11), and the plug connector (112) is an arc-shaped structure.

5. The insert sternum plate according to claim 1, characterized in that: Limiting flanges (113) are provided on both sides of the plug board (11); and a first limiting groove (2121) adapted to the limiting flanges (113) is provided in the plug hole (212).

6. The insert sternum plate according to claim 5, characterized in that: The thickness of the limiting flange (113) is smaller than the thickness of the first limiting groove (2121), and a slot (215) is formed between the limiting flange (113) and the top surface of the first limiting groove (2121); the connecting end (21) further comprises an insert (214) adapted to the slot (215).

7. The insert sternum plate according to claim 6, characterized in that: The connecting section of the insert (214) is a conical structure.

8. The insert sternum plate according to claim 7, characterized in that: The taper of the connecting section is a Morse taper.

9. The insert sternum plate according to claim 7, characterized in that: The length of the connecting section is 7 mm.

10. The insert sternum plate according to any one of claims 1 to 9, characterized in that: Hand-pushing parts (2111) are provided on both sides of the connection end body (211).

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