A binding strap used in conjunction with a bone plate

Abstract

The present application relates to the field of orthopedic medical devices, and specifically discloses a bandage used in conjunction with a bone plate. The bandage used in conjunction with a bone plate comprises a bandage body, one end of which is connected to a locking buckle, and the other end is provided with a plurality of plug holes, the plug holes are arranged along the length direction of the bandage body, the locking buckle is connected to the bandage body through the plug holes, the bandage body is inserted into the bone plate, and the bandage body is made of ultra-high molecular weight polyethylene. The bandage used in conjunction with the bone plate of the present application has the effect of improving fixation stability and reducing the risk of micro-motion wear after surgery.

Description

Technical Field

[0001] The present application relates to the field of orthopedic medical devices, and in particular to a binding strap used in conjunction with a bone plate. Background Art

[0002] Internal fixation is a surgical procedure that uses metal screws, steel plates, intramedullary nails, cables or bone plates to directly connect and fix broken bones inside or outside the broken bones. It is often used in open fracture reduction and osteotomy to maintain the reduction of the broken ends.

[0003] In the related art, the internal fixation system includes a bone plate, a cable and a locking pressure pin. The bone plate and the cable are both made of metal. The bone plate is provided with a blind hole for compressing the cable. The wall of the blind hole is provided with an internal thread that cooperates with the locking pressure pin. The bottom of the blind hole is provided with a cable hole that passes through the bone plate. The cable is wrapped around the bone and passes through the cable hole. The cable fixes the bone plate to the bone. The cable is fixed to the bone plate through the tightening pressure pin. Pressurization holes are provided at both ends of the bone plate. The pressurization holes are used in conjunction with bone screws to fix the bone plate and pressurize the bone section.

[0004] The above technical solution still has the following defects: when the metal bone plate and cable are used together, due to the contact between each other, there is a small amplitude vibration between the metal surfaces, so there is micro-motion wear between the friction surfaces. The abrasive particles generated by micro-motion wear may cause biological immune response, and a large number of macrophages gather on the surface to phagocytize the abrasive particles, which will stimulate the formation of osteoclasts in bone tissue and cause bone dissolution. Utility Model Content

[0005] In order to reduce the risk of micro-motion wear, the present application provides a binding strap for use with a bone plate.

[0006] The present application provides a binding strap for use with a bone plate, which adopts the following technical solution:

[0007] A bandage used in conjunction with a bone plate comprises a bandage body, one end of the bandage body is connected to a locking buckle, and the other end is provided with a plurality of insertion holes, the insertion holes are arranged along the length direction of the bandage body, the locking buckle is connected to the bandage body through the insertion holes, the bandage body is passed through the bone plate, and the bandage body is made of ultra-high molecular weight polyethylene.

[0008] By adopting the above technical solution, first, the friction coefficient of the bandage body made of ultra-high molecular weight polyethylene is low, and it has self-lubricating properties, which can reduce the risk of micro-wear with the bone plate. The strength of ultra-high molecular weight polyethylene is 15 times that of steel, and its wear resistance is 27.3 times higher than that of steel. At the same volume, the weight of ultra-high molecular weight polyethylene is only 1 / 8 of that of steel. Compared with the bandage body made of steel, the mechanical properties of the bandage body made of ultra-high molecular weight polyethylene are improved.

[0009] Second, there may be a local microenvironment with a high pH value in the process of osteogenesis in fractured bones, and the properties and structure of ultra-high molecular weight polyethylene in acid or alkali are extremely stable and can fully adapt to the physiological environment in the human body.

[0010] Third, the ultra-high molecular weight polyethylene bandage body is formed by thermoplastic extrusion, so its shape is controllable. The flat bandage body can reduce the number of bandage bodies used and increase the contact area between the bandage body and the bone, making the fixation of the bone plate and the bone more stable and achieving a lower bandage body notch.

[0011] Optionally, a pointed tip is provided at one end of the strap body away from the locking buckle.

[0012] By adopting the above technical solution, the pointed head makes it easier for the bandage body to be inserted into the bone plate, thereby reducing the operation time as much as possible.

[0013] Optionally, the locking buckle includes a buckle ring, which is connected to the strap body, a support rod is connected inside the buckle ring, an insertion rod is rotatably connected to the support rod, the insertion hole is used for inserting the insertion rod, the buckle ring is provided with a limiting groove for inserting the insertion rod, a bolt is arranged in the limiting groove, and the insertion rod is connected to the buckle ring by the bolt.

[0014] By adopting the above technical solution, the binding body can be easily fixed by the locking buckle. After the binding body is wrapped around the bone plate and the bone, the pointed end is passed through the buckle. After the binding body is fully tightened, the insertion rod is inserted into the appropriate insertion hole, the insertion rod is inserted into the limit groove, and finally the insertion rod is fixed in the limit groove by the bolt. If another surgery is required to remove the bone plate after the operation, the fixing method can be released by removing the bolt instead of directly cutting the binding body. Because the binding body is almost in contact with the bone, cutting the binding body may cause damage to the bone, so removing the bolt is safer.

[0015] Optionally, the outer side wall of the support rod is provided with an annular groove for the insertion rod to rotate.

[0016] By adopting the above technical solution, the annular groove can limit the insertion rod, so that the insertion rod can only rotate along the central axis of the support rod, limiting the sliding of the insertion rod in the length direction of the support rod.

[0017] Optionally, a positioning block is connected to one end of the insertion rod away from the annular groove, and a positioning hole for the positioning block to be inserted into the bottom wall of the limiting groove is formed.

[0018] By adopting the above technical solution, the cooperation between the positioning block and the positioning hole implements preliminary positioning of the insertion rod, which is convenient for the subsequent installation of the bolt.

[0019] Optionally, a blind hole is formed in the bottom wall of the limiting groove, a through hole connected to the blind hole is formed in the insertion rod, inner walls of the blind hole and the through hole are both provided with internal threads, and the bolt is threadedly connected to the inner walls of the through hole and the blind hole.

[0020] By adopting the above technical solution, the fixation of the insertion rod is strengthened, the risk of the bolt loosening due to vibration or force is reduced, and the strap body is not easy to slip out of the insertion rod.

[0021] Optionally, a plurality of grooves are provided on the strap body, and the grooves are provided between two adjacent insertion holes.

[0022] By adopting the above technical solution, usually, for the convenience of operation, the actual length of the strap body is greater than the use length of the strap body, so after the strap body is fixed, the excess part of the head of the strap body needs to be cut off. The groove can serve as a mark for the cutting part, and the thickness of the cutting part is small, which is easy to operate.

[0023] Optionally, a connecting block is connected to one end of the buckle away from the bolt, and a receiving groove is provided on a side of the connecting block close to the support rod, and the receiving groove is used for placing the end of the strap body.

[0024] By adopting the above technical solution, the end of the bandage body can be stored. Since the end of the bandage body is cut to form an incision, storing the incision in the accommodating groove can reduce the risk of the sharp part of the incision scratching the muscle.

[0025] Optionally, the opening of the receiving groove is arranged obliquely, a mounting block is connected to a side of the receiving groove close to the opening, and the insertion hole is used for inserting the mounting block.

[0026] By adopting the above technical solution, after the jack is inserted into the mounting block, the end of the strap body can be fixed, thereby reducing the possibility of the strap body accidentally falling off from the receiving groove.

[0027] In summary, this application has the following beneficial effects:

[0028] 1. By providing a bandage body made of ultra-high molecular weight polyethylene, the risk of micro-motion wear between the bandage body and the bone plate can be reduced, the mechanical strength of the bandage body can be improved, the fixation stability of the bone plate and the bone can be improved, and a lower bandage body notch can be achieved;

[0029] 2. By setting a locking buckle, it is easy to fix the strap body, reduce the risk of bone plate displacement, and make the process of removing the bone plate safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the structure of a bandage used in conjunction with a bone plate according to an embodiment of the present application;

[0031] Figure 2 is a schematic structural diagram of a strap body and a locking buckle according to an embodiment of the present application;

[0032] Figure 3 is a schematic structural diagram of a locking buckle according to an embodiment of the present application;

[0033] Figure 4 is a cross-sectional view of a locking buckle according to an embodiment of the present application;

[0034] Figure 5 yes Figure 4 A magnified schematic diagram of the middle A area;

[0035] Figure 6 It is a schematic diagram of the structure after the fixing strap of an embodiment of the present application.

[0036] Description of reference numerals: 1. strap body; 11. insertion hole; 12. pointed head; 13. groove; 2. locking buckle; 21. buckle ring; 211. limiting groove; 212. positioning hole; 213. blind hole; 2131. internal thread; 22. support rod; 221. annular groove; 23. insertion rod; 231. positioning block; 232. through hole; 24. bolt; 25. connecting block; 251. receiving groove; 252. mounting block;

[0037] 101. Bone plate; 102. Bone. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-6 This application is described in further detail.

[0039] The embodiment of the present application discloses a binding strap used in conjunction with a bone plate.

[0040] Reference Figure 1 The binding used with the bone plate includes a binding body 1 and a locking buckle 2, and the locking buckle 2 is fixedly connected to one end of the binding body 1. When performing internal fixation, the fracture of the bone 102 is firstly reset, and then the bone plate 101 is directly attached to the fractured segment, the binding body 1 passes through the bone plate 101, and the bone plate 101 and the bone 102 are fixed by the locking buckle 2.

[0041] Reference Figure 1 and Figure 2The bandage body 1 is made of ultra-high molecular weight polyethylene. The bandage body 1 is flat and long as a whole. The contact area between the bandage body 1 and the bone 102 is large. The bandage body 1 is relatively stable when binding the bone plate 101 and the bone 102, and the notch is low. A pointed head 12 is provided at one end of the bandage body 1 away from the locking buckle 2. The pointed head 12 helps the bandage body 1 to pass through the bone plate 101 and minimize the operation time. A socket 11 is provided on the side of the bandage body 1 close to the pointed head 12. The opening of the socket 11 is elliptical. The locking buckle 2 is connected to the bandage body 1 through the socket 11. A plurality of sockets 11 are arranged at intervals along the length direction of the bandage body 1. The clamping position of the locking buckle 2 and the socket 11 is adjusted according to the thickness of the patient's bone 102.

[0042] Reference Figure 2 A groove 13 is provided on one side of the bandage body 1 near the insertion hole 11. The groove 13 is arranged in the middle of two adjacent insertion holes 11. The length direction of the groove 13 is consistent with the width direction of the bandage body 1. After the bandage body 1 is engaged with the locking buckle 2, the excess bandage body 1 is cut off from the groove 13 to reduce the influence of the bandage body 1 on the remaining tissues in the patient's body.

[0043] Reference Figure 2 and Figure 3 The locking buckle 2 includes a buckle 21, a support rod 22, an insertion rod 23 and a bolt 24. The buckle 21 is square in shape. The support rod 22 is arranged between the buckles 21. The two ends of the support rod 22 are fixedly connected to the two sides of the buckle 21. One end of the insertion rod 23 is rotatably connected to the support rod 22, and the other end is connected to the side of the buckle 21 through the bolt 24. The insertion rod 23 is arranged in the middle section of the support rod 22. The side of the buckle 21 away from the bolt 24 is fixedly connected to the strap body 1. When using the strap, the pointed head 12 is first passed through the hole of the buckle 21 close to the bolt 24. After the strap body 1 is tied tightly, the insertion rod 23 passes through the appropriate insertion hole 11, and the insertion rod 23 is fixed to the buckle 21 through the bolt 24.

[0044] Reference Figure 4 and Figure 5 The outer wall of the support rod 22 is provided with an annular groove 221, and a limiting groove 211 is provided on the side of the buckle ring 21 close to the bolt 24. One end of the insertion rod 23 is arranged in the annular groove 221, and the other end is arranged in the limiting groove 211. The width of the annular groove 221 is consistent with the width of the insertion rod 23. The insertion rod 23 rotates circumferentially in the annular groove 221 along the central axis of the support rod 22 until the end of the insertion rod 23 is inserted into the limiting groove 211.

[0045] A positioning block 231 is fixedly connected to one side of the insertion rod 23 near the bottom wall of the limiting groove 211. A positioning hole 212 is provided on the bottom wall of the limiting groove 211 for the positioning block 231 to be inserted into. The cooperation between the positioning block 231 and the positioning hole 212 completes the preliminary positioning of the insertion rod 23 and the buckle 21. The insertion rod 23 is provided with a through hole 232 for the bolt 24 to be inserted. The through hole 232 runs through the insertion rod 23. The bottom wall of the limiting groove 211 is provided with a blind hole 213 connected to the through hole 232. The inner diameters of the through hole 232 and the blind hole 213 are consistent, and the inner walls of the through hole 232 and the blind hole 213 are both provided with internal threads 2131. The bolt 24 is threadedly connected to the inner walls of the through hole 232 and the blind hole 213.

[0046] Reference Figure 4 and Figure 6 The side of the buckle 21 away from the bolt 24 is fixedly connected with a connecting block 25, the longitudinal section of the connecting block 25 is a right-angle trapezoid, and the side of the connecting block 25 close to the support rod 22 is provided with a receiving groove 251, and the receiving groove 251 is used for inserting the end of the cut strap body 1. The connecting block 25 is fixedly connected with a mounting block 252, and the mounting block 252 is arranged on the bottom wall of the receiving groove 251. After the strap body 1 is inserted into the receiving groove 251, the mounting block 252 is inserted into the insertion hole 11, and the end of the strap body 1 is fixed.

[0047] The implementation principle of the bandage used with the bone plate of the embodiment of the present application is as follows: first, the bandage body 1 passes through the bone plate 101, the bandage body 1 wraps around the bone plate 101 and the bone 102, and the pointed head 12 passes through the buckle 21 to tighten the bandage body 1. Next, the insertion rod 23 is inserted into the insertion hole 11, and the insertion rod 23 is rotated so that the positioning block 231 is inserted into the positioning hole 212, and the insertion rod 23 is fixed by the bolt 24, and the bolt 24 is threadedly connected with the inner wall of the through hole 232 and the blind hole 213. Finally, the excess bandage body 1 is cut off, the end of the bandage body 1 is inserted into the receiving groove 251, and the mounting block 252 is inserted into the insertion hole 11, and the fixation of the bone plate 101 and the bone 102 is completed.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A binding strap for use with a bone plate, comprising a binding strap body (1), characterized in that: One end of the bandage body (1) is connected to a locking buckle (2), and the other end is provided with a plurality of insertion holes (11), wherein the insertion holes (11) are arranged along the length direction of the bandage body (1), and the locking buckle (2) is connected to the bandage body (1) via the insertion holes (11), and the bandage body (1) is inserted into the bone plate (101), and the bandage body (1) is made of ultra-high molecular weight polyethylene.

2. The binding strap for use with a bone plate according to claim 1, characterized in that: A pointed tip (12) is provided at one end of the binding belt body (1) away from the locking buckle (2).

3. The binding strap for use with a bone plate according to claim 1, characterized in that: The locking buckle (2) comprises a buckle (21), the buckle (21) is connected to the binding strap body (1), a support rod (22) is connected inside the buckle (21), an insertion rod (23) is rotatably connected to the support rod (22), the insertion hole (11) is used for inserting the insertion rod (23), the buckle (21) is provided with a limiting groove (211) for the insertion rod (23) to be inserted, a bolt (24) is arranged in the limiting groove (211), and the insertion rod (23) is connected to the buckle (21) by the bolt (24).

4. The binding strap for use with a bone plate according to claim 3, characterized in that: The outer side wall of the support rod (22) is provided with an annular groove (221) for the insertion rod (23) to rotate.

5. The binding strap for use with a bone plate according to claim 4, characterized in that: One end of the insertion rod (23) away from the annular groove (221) is connected to a positioning block (231), and the bottom wall of the limiting groove (211) is provided with a positioning hole (212) for the positioning block (231) to be inserted into.

6. The binding strap for use with a bone plate according to claim 3, characterized in that: The bottom wall of the limiting groove (211) is provided with a blind hole (213), the insertion rod (23) is provided with a through hole (232) connected to the blind hole (213), the inner walls of the blind hole (213) and the through hole (232) are both provided with internal threads (2131), and the bolt (24) is threadedly connected to the inner walls of the through hole (232) and the blind hole (213).

7. The binding strap for use with a bone plate according to claim 1, characterized in that: The binding belt body (1) is provided with a plurality of grooves (13), and the grooves (13) are arranged between two adjacent insertion holes (11).

8. The binding strap for use with a bone plate according to claim 3, characterized in that: The end of the buckle (21) away from the bolt (24) is connected to a connecting block (25), and a receiving groove (251) is provided on a side of the connecting block (25) close to the support rod (22), and the receiving groove (251) is used to place the end of the binding body (1).

9. The binding strap for use with a bone plate according to claim 8, characterized in that: The opening of the receiving groove (251) is arranged obliquely, a side of the receiving groove (251) close to the opening is connected to a mounting block (252), and the insertion hole (11) is used for inserting the mounting block (252).

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