Titanium alloy wire tape internal fixation device

Abstract

The application discloses a titanium alloy wire weaving band internal fixation device, which comprises a titanium alloy wire weaving band, a band arm nail-shaped bone needle, a pressurizing fixing block, a pressurizing fixing screw and a locking buckle; the locking buckle is used for locking two ends of the titanium alloy wire weaving band; the locking buckle comprises an outer shell body, end covers are arranged at two ends of the outer shell body, a first belt hole and a second belt hole are arranged on the end covers, an elastic inner shell body is arranged in the outer shell body, the inner shell body comprises a pair of elastic arc pieces arranged on two sides and a cross connecting piece, the cross connecting piece is provided with a plurality of puncture limiting heads, a plurality of internal fixing pieces are arranged on the end covers and inserted into the inner shell body, a plurality of puncture holes are arranged on the internal fixing pieces, and a slidable sliding piece is connected to the side wall of the puncture hole through a plurality of connecting pieces. The elliptical locking buckle is pressed flat, the inner shell body is deformed, the resistance strip is deformed and tightly attached to the titanium alloy wire weaving band, the puncture limiting heads of the cross connecting piece are penetrated into the puncture holes, the puncture limiting heads are clamped by the clamping grooves, the resistance strip increases the resistance of the titanium alloy wire weaving band movement, and the titanium alloy wire weaving band is not easy to slide off.

Description

Technical Field

[0001] This invention relates to the field of internal fixing devices for titanium alloy wire webbing, and more specifically to an internal fixing device for titanium alloy wire webbing. Background Technology

[0002] Bone screws, also known as anchorage screws, are used to fix bone fractures and are a core application of bone joining surgery. They are made of metal or biodegradable materials to fix the fracture ends and promote bone healing. However, this technique still faces the following major difficulties and drawbacks: Because titanium alloy wire webbing cannot be fitted with external buckle structures and is made of multi-strand ultra-fine titanium alloy wire, the overall webbing is soft and smooth, and the titanium alloy wire webbing in the locking buckle is easy to fall off. Summary of the Invention

[0003] To address the aforementioned problems, this invention proposes an internal fixing device for titanium alloy wire webbing, which solves the shortcomings of existing devices where titanium alloy wire webbing cannot be fitted with external buckle structures and where the titanium alloy wire webbing is made of multiple strands of ultra-fine titanium alloy filaments, resulting in a soft and smooth overall weave and the titanium alloy wire webbing in the locking buckle is prone to falling off.

[0004] The technical solution adopted in this invention is as follows:

[0005] An internal fixation device using titanium alloy wire webbing includes: a titanium alloy wire webbing, a pin-shaped bone needle with an arm, a pressure fixing block, a pressure fixing screw, and a locking buckle; the pin-shaped bone needle with an arm is used to fix the bone at the joint end; the pressure fixing block has a first positioning hole and a second positioning hole; the side wall of the locking buckle is provided with a sliding groove; and the pressure fixing screw is used to pass through the second positioning hole and fix the bone at a position along its length.

[0006] The locking buckle is used to lock the two ends of the titanium alloy wire webbing; the locking buckle includes an outer shell, the two ends of which are provided with end caps, the end caps are provided with a first hole and a second hole, the outer shell contains an elastic inner shell, the inner shell includes a pair of elastic arc plates on both sides and a transverse member connecting the pair of elastic arc plates, the transverse member is provided with multiple puncture limiting heads, the end caps are provided with multiple inner fixing plates that are inserted into the inner shell, the inner fixing plates are provided with multiple puncture holes, and the sidewalls of the puncture holes are connected to sliding plates by multiple connectors.

[0007] Optionally, the titanium alloy wire webbing is used to be wound in a figure-eight shape.

[0008] Optionally, the titanium alloy wire webbing internal fixing device further includes a positioning pin, which is inserted into the first positioning hole.

[0009] Optionally, both the outer shell and the inner shell are made of materials that are subject to compressive deformation.

[0010] Optionally, the puncture limiting head is made of titanium alloy.

[0011] Optionally, the puncture limiting head is provided with a through slot.

[0012] Optionally, the slot is provided with an anti-slip ring.

[0013] Optionally, the adjacent sliding pieces are connected by a resistance strip, and a fixing strip is connected to the end cap. The outermost sliding piece is connected to the fixing strip by a connecting strip.

[0014] Optionally, the resistance strip is trapezoidal, with the portion of the resistance strip on the first perforated side that is wider at the front end of the titanium alloy wire webbing in the direction of movement, and the portion of the resistance strip on the first perforated side that is narrower at the rear end of the titanium alloy wire webbing in the direction of movement. Similarly, the portion of the resistance strip on the second perforated side that is wider at the front end of the titanium alloy wire webbing in the direction of movement, and the portion of the resistance strip on the second perforated side that is narrower at the rear end of the titanium alloy wire webbing in the direction of movement.

[0015] Optionally, the resistance strip is deformed and closely adheres to the titanium alloy wire webbing, the bottom of the connector is provided with a protrusion, one corner of the protrusion abuts against the titanium alloy wire webbing, and the bottom of the puncture limiting head contacts the sliding plate.

[0016] The beneficial effects of the present invention include at least the following:

[0017] 1. This invention uses clamping pliers to flatten the elliptical locking buckle, deforming the inner shell. After the resistance strip deforms, it fits tightly against the titanium alloy wire webbing. The puncture limiting head of the transverse piece is inserted into the puncture hole and is locked in place by a slot. The resistance strip increases the resistance to the movement of the titanium alloy wire webbing. The detached sliding piece will not fall off and slide out of the outer shell, causing additional debris to harm the human body.

[0018] 2. The edge R-groove design in this invention fixes the tension braided band to the edge of the pressure fixing block, which facilitates installation, effectively fixes the band, and prevents slippage.

[0019] 3. The metal nail-shaped bone pin of this invention is made of titanium alloy material for surgical implants. The sharp incision and self-tapping groove design of the head can be quickly inserted into the fracture site and effectively connect the bone fragments. Then, the tension braided band is effectively tied to the metal nail-shaped bone pin, which provides strong guarantee for the overall fixation of the tension braided band.

[0020] 4. The titanium alloy wire webbing in this invention is woven from multiple strands of ultra-fine titanium alloy wires. The overall webbing is soft and smooth, and has a tension structure design. It is simple and convenient to use in clinical applications, and its binding effect has a significant advantage over traditional strap fixation.

[0021] 5. The separator rod of the present invention serves to support and separate the titanium alloy wire webbing. After deformation, it fills the gap between the titanium alloy wire webbing and the inner shell, increasing the resistance between it and the resistance strip and the titanium alloy wire webbing. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the titanium alloy wire webbing internal fixing device according to Embodiment 1 of the present invention;

[0023] Figure 2 This is a perspective view of the locking buckle of the titanium alloy wire webbing internal fixing device according to Embodiment 1 of the present invention;

[0024] Figure 3 This is an internal structural diagram of the locking buckle of the titanium alloy wire webbing internal fixing device according to Embodiment 1 of the present invention;

[0025] Figure 4 This is a rear view of the transverse component of the titanium alloy wire webbing internal fixing device according to Embodiment 1 of the present invention;

[0026] Figure 5 This is a back view of the inner fixing plate of the titanium alloy wire webbing inner fixing device according to Embodiment 1 of the present invention;

[0027] Figure 6 This is a structural diagram of the puncture limiting head of the titanium alloy wire webbing internal fixation device according to Embodiment 2 of the present invention;

[0028] Figure 7 This is a rear view of the transverse component of the titanium alloy wire webbing internal fixing device according to Embodiment 3 of the present invention;

[0029] Figure 8 This is a back view of the inner fixing plate of the titanium alloy wire webbing inner fixing device according to Embodiment 3 of the present invention.

[0030] The labels for the attached figures are as follows:

[0031] 1. Titanium alloy wire webbing; 2. Bone needle with arm-shaped nail; 3. Positioning nail; 4. Pressure fixing block; 5. Pressure fixing screw; 6. Locking buckle; 7. First positioning hole; 8. Second positioning hole; 9. Slide groove; 10. Outer shell; 11. End cap; 12. First perforated section; 13. Second perforated section; 14. Inner shell; 15. Transverse component; 16. Puncture limiting head; 17. Internal fixing plate; 18. Puncture hole; 19. Slide plate; 20. Anti-slip ring; 21. Slot; 22. Resistance strip; 23. Fixing strip; 24. Protrusion; 25. Elastic arc plate; 26. R-groove; 27. Divider rod; 28. Perforation; 29. ​​Connector; 30. Connecting strip. Detailed Implementation

[0032] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the invention.

[0033] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] Example 1:

[0035] The technical solution adopted in this invention is as follows:

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, this invention discloses a titanium alloy wire webbing internal fixation device, comprising: a titanium alloy wire webbing 1, a pair of arm-shaped bone pins 2, a positioning pin 3, a pressure fixing block 4, a pressure fixing screw 5, and a locking buckle 6; the arm-shaped bone pins are used to fix to the end of a bone joint; the pressure fixing block has a first positioning hole 7 and a second positioning hole 8; the side wall of the locking buckle is provided with a sliding groove 9; the pressure fixing screw is used to pass through the second positioning hole and fix to a portion along the length of the bone; the titanium alloy wire webbing is used to be wound in a figure-eight shape. The positioning pin is inserted into the first positioning hole. The end edge of the arm-shaped bone pin is provided with an R-groove 26.

[0037] In this embodiment, the metal nail-shaped bone needle with arm is made of titanium alloy material for surgical implants, and has a sharp incision groove design at the head.

[0038] In this embodiment, the titanium alloy wire webbing is woven from multiple strands of titanium alloy ultrafine wires.

[0039] like Figure 4As shown, the locking buckle is used to lock both ends of the titanium alloy wire webbing. The locking buckle includes a housing 10, with end caps 11 at both ends. The end caps have a first perforation 12 and a second perforation 13. An elastic inner housing 14 is provided inside the housing. The inner housing includes a pair of elastic arc plates 25 located on both sides and a transverse member 15 connecting the pair of elastic arc plates. The transverse member has multiple puncture limiting heads 16. The end caps have a pair of inner fixing pieces 17 inserted into the inner housing. In this embodiment, each transverse member corresponds one-to-one with one of the inner fixing pieces. The diameters of the first and second perforations are slightly larger than the outer diameter of the titanium alloy wire webbing.

[0040] The internal fixing plate has multiple puncture holes 18, and sliding plates 19 are connected to the sidewalls of the puncture holes by multiple connectors 29. A deformable dividing rod 27 is provided in the middle of the inner shell, and a perforation 28 is provided in the center of the dividing rod; end caps are connected to both ends of the dividing rod. The puncture limiting head has a wider end and a narrower end, and the width of the puncture limiting head gradually decreases from one end to the other. The bottom of the puncture limiting head contacts the sliding plate. The dividing rod is made of silicone material, and after deformation, it fills the gap between the titanium alloy wire webbing and the inner shell, increasing the resistance between it and the resistance strip and the titanium alloy wire webbing.

[0041] In this embodiment, both the outer shell and the inner shell are made of a material that can deform under pressure. The puncture limiting head is made of a deformable material. The internal fixation plate is made of titanium.

[0042] like Figure 5 As shown, the puncture limiting head is provided with a through groove 21. The adjacent sliding pieces are connected by a resistance strip 22, and a fixing strip 23 is connected to the end cap. The outermost sliding piece is connected to the fixing strip by a connecting strip 30.

[0043] In this embodiment, the positioning needle is made of high-strength titanium alloy material for surgical implants, and the head of the positioning needle is designed with a sharp triangular cutting edge to facilitate smooth insertion and effective fixation of the pressure fixation block.

[0044] The resistance strip is trapezoidal. The portion of the resistance strip on the first perforated side that is wider at the front end of the titanium alloy wire webbing in the direction of movement is larger, while the portion on the same side is narrower at the rear end. Similarly, the portion of the resistance strip on the second perforated side that is wider at the front end of the titanium alloy wire webbing in the direction of movement is narrower. The outer surface of the resistance strip is provided with a friction-enhancing structure.

[0045] In this embodiment, the operator only needs to fix the arm-shaped bone pin to the bone fragments, then lock the locking screw to the bone through the waist-shaped hole, then wrap one end of the titanium alloy wire webbing around the arm-shaped bone pin, and wrap the other end of the titanium alloy wire webbing around the side wall of the locking buckle through the sliding groove. Then, the locking screw is gradually tightened and inserted into the bone, so that the locking buckle slides laterally to the predetermined position relative to the pressure fixing block until the titanium alloy wire webbing is tightened by the locking buckle and the locking screw, so that the titanium alloy wire webbing firmly connects the bone fragments to the bone.

[0046] The clamping pliers flatten the elliptical locking buckle, deforming the inner shell. The deformed resistance strip adheres tightly to the titanium alloy wire webbing, and the piercing limiting head of the transverse component inserts into the piercing hole, securing it with a slot. The resistance strip increases the resistance to the movement of the titanium alloy wire webbing. The resistance strip on the first hole side has a wider portion at the front end of the titanium alloy wire webbing's movement direction, and a narrower portion at the rear end. Similarly, the resistance strip on the second hole side has a wider portion at the front end and a narrower portion at the rear end. This results in greater structural resistance to the titanium alloy wire webbing, higher structural strength, and a reduction in the strip's size. The sliding pieces of this invention are connected in series via the resistance strips, preventing them from breaking. The piercing limiting head, after being compressed, deforms and adheres to the titanium alloy wire webbing, making it less prone to detachment. Any detached sliding pieces will not slip out of the outer shell, preventing additional debris from injuring the user. The separator rods serve to support and separate the titanium alloy wire webbing. After deformation, they fill the gap between the titanium alloy wire webbing and the inner shell, increasing the resistance between the separator and the resistance strip and the titanium alloy wire webbing.

[0047] Example 2:

[0048] like Figure 6 As shown, the difference between this embodiment 2 and embodiment 1 is that the card slot is provided with an anti-slip ring 20.

[0049] The connector has a protrusion 24 at the bottom, with one corner of the protrusion contacting the titanium alloy wire webbing downwards. The puncture limiting head is directly connected to the sliding plate, making the puncture limiting head, sliding plate and resistance strip form a whole, with high structural strength and not easily torn.

[0050] In this embodiment, after the connector falls off, the protrusion further abuts against the titanium alloy wire webbing, making it less likely to fall off from the titanium alloy wire webbing and preventing the connector from slipping out of the outer shell, thus avoiding additional debris from harming the human body.

[0051] Example 3:

[0052] like Figure 7 and Figure 8As shown, the difference between this embodiment 3 and embodiment 1 is that the portion of the puncture limiting head located on the first perforated side that is at the front end of the titanium alloy wire webbing in the direction of movement is wider, the portion of the puncture limiting head located on the first perforated side that is at the front end of the titanium alloy wire webbing in the direction of movement is narrower, the portion of the puncture limiting head located on the second perforated side that is at the front end of the titanium alloy wire webbing in the direction of movement is wider, and the portion of the puncture limiting head located on the first perforated side that is at the front end of the titanium alloy wire webbing in the direction of movement is narrower.

[0053] In this embodiment, the puncture limiting head is located at the front end of the titanium alloy wire webbing in the direction of movement, resulting in a larger size and higher structural strength.

[0054] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent structural transformations made based on the description and drawings of the present invention, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present invention.

Claims

1. A titanium alloy wire webbing internal fixing device, characterized in that, include: The package includes a titanium alloy wire webbing, a bone pin with an arm, a pressure fixing block, a pressure fixing screw, and a locking buckle; the bone pin with an arm is used to fix the bone to the end of a joint; the pressure fixing block has a first positioning hole and a second positioning hole; the side wall of the locking buckle is provided with a sliding groove; and the pressure fixing screw is used to pass through the second positioning hole and fix the bone to a position along its length. The locking buckle is used to lock the two ends of the titanium alloy wire webbing; the locking buckle includes an outer shell, the two ends of which are provided with end caps, the end caps are provided with a first hole and a second hole, the outer shell contains an elastic inner shell, the inner shell includes a pair of elastic arc plates on both sides and a transverse member connecting the pair of elastic arc plates, the transverse member is provided with multiple puncture limiting heads, the end cap is provided with multiple inner fixing plates that are inserted into the inner shell, the inner fixing plates are provided with multiple puncture holes, and the sidewalls of the puncture holes are connected to sliding pieces by multiple connecting pieces; both the outer shell and the inner shell are made of a material that can be deformed under pressure; the puncture limiting head is provided with a through groove, adjacent sliding pieces are connected by a resistance strip, the end cap is connected to a fixing strip, and the outermost sliding piece is connected to the fixing strip by a connecting strip.

2. The titanium alloy wire webbing internal fixing device as described in claim 1, characterized in that, The titanium alloy wire webbing is used to wrap in a figure-eight shape.

3. The titanium alloy wire webbing internal fixing device as described in claim 1, characterized in that, It also includes a positioning pin, which is inserted into a first positioning hole.

4. The titanium alloy wire webbing internal fixing device as described in claim 1, 2, or 3, characterized in that, The puncture limiting head is made of titanium alloy.

5. The titanium alloy wire webbing internal fixing device as described in claim 4, characterized in that, The slot is equipped with an anti-slip ring.

6. The titanium alloy wire webbing internal fixing device as described in claim 1, characterized in that, The resistance strip is trapezoidal. The resistance strip on the first perforated side has a wider portion at the front end of the titanium alloy wire webbing in the direction of movement, and a narrower portion at the rear end of the titanium alloy wire webbing in the direction of movement. The resistance strip on the second perforated side has a wider portion at the front end of the titanium alloy wire webbing in the direction of movement, and a narrower portion at the rear end of the titanium alloy wire webbing in the direction of movement.

7. The titanium alloy wire webbing internal fixing device as described in claim 6, characterized in that, The resistance strip deforms and fits tightly against the titanium alloy wire webbing. The bottom of the connector has a protrusion, one corner of which touches the titanium alloy wire webbing downwards. The bottom of the puncture limiting head contacts the sliding plate.

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