Novel pressurized slider for bridge connection system and novel bridge connection system

Abstract

The utility model relates to medical instrument technical field, and disclose a kind of new bridge connecting system with pressurized slider and new bridge connecting system, wherein new bridge connecting system with pressurized slider includes: along the axial setting and the through sliding hole of slider, the intersection of a part of pressurized nail hole bottom side edge and sliding hole;Polygonal anti-rotation groove is set in the corresponding position of pressurized nail hole at slider bottom or top, and inverted conical groove is smooth surface, and fixed nail hole is screw thread hole face.New bridge connecting system includes the new bridge connecting system with pressurized slider described above.New bridge connecting system with pressurized slider of the utility model is fixed nail hole by special setting and inverted conical groove compound, so that fixed nail for fixed skeleton or bone piece can produce along inverted conical groove conical surface micro movement in installation process, to drive skeleton or bone piece to exert section pressure, to promote the effect of healing.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a pressure slider for a novel bridge connection system and a novel bridge connection system. Background Technology

[0002] A bridging system is a medical technique used for fracture fixation. It aims to provide mechanical stability by "bridging" the fracture area while protecting the blood supply and biological environment of the fracture site. A bridging system typically includes a bridging rod and components such as end blocks, sliders, and hooks fitted onto the bridging rod for adjusting and installing fixation pins.

[0003] Applying pressure to the fracture surface can promote healing. However, the sliders in existing bridging systems generally only serve to adjust and install fixation pins, and do not provide compression to the fracture surface. If compression is required later, it is necessary to release the slider from the bridging rod after the slider has already fixed the bone or bone fragments, and then slightly move the slider in the direction of compression. This approach increases the complexity of the surgery, and the slider experiences significant displacement resistance, making control very difficult. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a novel pressure slider for a bridge connection system, comprising: a sliding hole arranged along the slider axis and penetrating the slider; a pressure pin hole arranged along the slider longitudinally, wherein a portion of the bottom side edge of the pressure pin hole intersects with the sliding hole; a polygonal anti-rotation groove formed at the corresponding position of the pressure pin hole on the bottom or top of the slider; and a fixing pin hole arranged along the slider longitudinally, wherein an inverted conical groove is provided at the position of the fixing pin hole on the bottom or top of the slider and splices with the fixing pin hole, wherein the inverted conical groove is a smooth surface and the fixing pin hole is a threaded hole surface.

[0005] Optionally, a threaded groove is provided on the inner side of the fixing pin hole, and the threaded groove is arranged vertically.

[0006] Optionally, the threaded groove is arranged in an inverted conical shape to match the inverted conical groove.

[0007] Furthermore, when the threaded groove is arranged in an inverted conical shape to match the inverted conical groove, the fixing pin hole is provided with a round conical chamfered groove on the opposite side of the inverted conical groove.

[0008] Preferably, the taper of the circular conical chamfered groove is greater than or equal to the taper of the inverted circular conical groove.

[0009] Furthermore, the slider has engagement grooves on both sides of the sliding hole along the axial direction.

[0010] Furthermore, a portion of the top side edge of the polygonal anti-rotation groove intersects with the sliding hole.

[0011] In addition, this utility model also provides a novel bridge connection system, including: a pressure slider for the novel bridge connection system, a bridge connecting rod, a polygonal anti-rotation block, and a pressure fixing pin; the bridge connecting rod matches the sliding hole of the pressure slider for the novel bridge connection system and passes through the sliding hole; the polygonal anti-rotation block matches the polygonal anti-rotation groove, the pressure fixing pin matches the pressure pin hole, and the fixing pin matches the fixing pin hole.

[0012] Preferably, after the pressure fixing nail is tightened, the top of the nail head is flush with or lower than the end face of the slider; after the fixing nail is tightened, the top of the nail head is flush with or lower than the end face of the slider.

[0013] Preferably, after the polygonal anti-rotation block is tightened, its bottom end face is flush with or lower than the end face of the slider.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The novel bridge connection system of this utility model uses a pressure slider through a specially designed fixing nail hole that is combined with an inverted conical groove. This allows the fixing nail for fixing bones or bone fragments to move slightly along the conical surface of the inverted conical groove during installation, thereby applying cross-sectional pressure to the bones or bone fragments and promoting healing.

[0016] 2. The pressure slider of the novel bridge connection system of this utility model has a pressure locking function, which can be firmly fixed on the bridge connecting rod. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a portion of the novel bridge connection system of this utility model;

[0018] Figure 2 This is a side view schematic diagram of a portion of the novel bridge connection system of this utility model;

[0019] Figure 3 This is a three-dimensional schematic diagram of the pressure slider and related structures of the novel bridge connection system of this utility model.

[0020] Figure 4 This is an exploded three-dimensional schematic diagram of the pressurized slider and related structures for the novel bridge connection system of this utility model;

[0021] Figure 5 This is a side sectional view of the pressure slider used in the novel bridge connection system of this utility model;

[0022] Figure 6 This is a schematic diagram of the pressure slider and related structures of the novel bridge connection system of this utility model.

[0023] In the diagram: 1. Slider; 2. Sliding hole; 3. Pressure pin hole; 4. Pressure fixing pin; 5. Polygonal anti-rotation block; 6. Fixing pin hole; 7. Inverted conical groove; 8. Threaded groove; 9. Round chamfered groove; 10. Engaging groove; 11. Polygonal anti-rotation groove; 12. Bridge connecting rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example:

[0026] Please refer to the following: Figure 1-6 ,

[0027] This utility model provides an exemplary pressurized slider for a novel bridge connection system, comprising: a sliding hole 2 axially disposed and penetrating the slider 1; a pressurized pin hole 3 longitudinally disposed and penetrating the slider 1, a portion of the bottom side edge of the pressurized pin hole 3 intersecting with the sliding hole 2; a polygonal anti-rotation groove 11 provided at the bottom or top of the slider 1 at the corresponding position of the pressurized pin hole 3; a fixing pin hole 6 longitudinally disposed and penetrating the slider 1, wherein the bottom or top of the slider 1 is provided with an inverted conical groove 7 spliced ​​with the fixing pin hole 6 at the position of the fixing pin hole 6, the inverted conical groove 7 being a smooth surface and the fixing pin hole 6 being a threaded hole surface.

[0028] In use, the device is first fitted onto the bridge connecting rod 12. Then, the slider 1 is moved to the appropriate position, and the pressure fixing pin 4 passes through the pressure pin hole 3 of the slider 1, cooperating with the polygonal anti-rotation block 5 installed in the polygonal anti-rotation groove 11 to clamp the bridge connecting rod 12, thus achieving the function of pressure fixing the slider 1. Next, the fixing pin is passed through the fixing pin hole 6. At this point, the outer edge of the fixing pin head first contacts the inverted conical groove 7. Then, as the fixing pin moves downwards, it slides down the inclined surface of the inverted conical groove 7. Since the slider is now fixed to the bridge connecting rod 12, this micro-displacement of the pin body caused by sliding down the inclined surface of the inverted conical groove 7 is converted into micro-displacement of the bone or bone fragment driven by the fixing pin. Because the bone and bone fragment are in a corrected position, i.e., in a spliced ​​state, this micro-displacement ultimately converts into cross-sectional pressure between adjacent bones or bone fragments, thereby achieving cross-sectional pressure on the fractured bone and promoting fracture healing.

[0029] This utility model provides an example of a fixing pin hole 6 with a threaded groove 8 on its inner side, and the threaded groove 8 is vertically arranged. At this time, the thread at the corresponding position of the fixing pin is a straight thread. This straight thread structure can provide a more stable fixing effect and the fixing pin is not easy to strip.

[0030] This utility model provides an example of a fixing nail hole 6, which has a threaded groove 8 on its inner side, and the threaded groove 8 is arranged in an inverted conical shape to match the inverted conical groove 7.

[0031] In an embodiment of this utility model: when the threaded groove 8 is set in an inverted conical shape that matches the inverted conical groove 7, the fixing pin hole 6 is provided with a round conical chamfered groove 9 on the opposite side of the inverted conical groove 7.

[0032] In an embodiment of this utility model: the taper of the right circular conical chamfered groove 9 is greater than or equal to the taper of the inverted circular conical groove 7.

[0033] At this time, the thread at the corresponding position of the fixing pin is a ball thread or a tapered thread, and the thread groove 8 is tapered. With the help of the round tapered chamfered groove 9, the fixing pin can rotate in all directions within a certain angle range, thereby increasing the flexibility of fixing pin installation.

[0034] In an embodiment of this invention, engaging grooves 10 are respectively provided on both sides of the slider 1 along the axial direction of the sliding hole 2. This arrangement facilitates the use of calipers to match the engaging grooves 10, thereby stably gripping the slider 1.

[0035] In an embodiment of this utility model, a portion of the top side edge of the polygonal anti-rotation groove 11 intersects with the sliding hole 2. This arrangement allows the top side edge of the installed polygonal anti-rotation block 5 to form an upward pressure friction with the bridge connecting rod 12, thereby cooperating with the downward pressure friction of the bottom side edge of the pressure fixing nail 4 head to form an upper and lower pressure clamping effect. This further allows the slider 1 to be firmly fixed on the bridge connecting rod 12. Compared with unilateral pressure, this upper and lower clamping effect can make the force on the bridge connecting rod 12 relatively balanced, avoiding deformation of the bridge connecting rod 12 due to long-term unidirectional force.

[0036] This utility model provides a novel bridge connection system, including a pressure slider, a bridge connecting rod 12, a polygonal anti-rotation block 5, and a pressure fixing nail 4 as described in the above embodiment; the bridge connecting rod 12 matches the sliding hole 2 of the pressure slider and passes through the sliding hole 2; the polygonal anti-rotation block 5 matches the polygonal anti-rotation groove 11; the pressure fixing nail 4 matches the pressure nail hole 3; and the fixing nail matches the fixing nail hole 6.

[0037] The new bridge connection system is used as follows:

[0038] The bridge connecting rod 12 matches and passes through the sliding hole 2 of the pressure slider of the new bridge connection system. The polygonal anti-rotation block 5 matches and is inserted into the polygonal anti-rotation groove 11 of the pressure slider of the new bridge connection system. It matches the pressure fixing nail 4 and plays a role in preventing rotation during the screwing of the pressure fixing nail 4, thus preventing the pressure fixing nail 4 from stripping.

[0039] The pressure fixing nail 4 passes through the pressure nail hole 3 of the pressure slider of the new bridge connection system and is screwed and fastened to the polygonal anti-rotation block 5. The new bridge connection system is pressure locked to the bridge connection rod 12 by the part where the lower edge of the nail head of the pressure fixing nail 4 passes through the bottom side edge of the pressure nail hole 3 and intersects with the sliding hole 2 and makes contact with the body of the bridge connection rod 12.

[0040] The fixation pin passes through the fixation pin hole 6 and matches the threaded hole surface and is screwed and tightened. During the screwing process, the head of the fixation pin is subjected to the action of the inverted conical groove 7, which forms a pressure in the direction of the cross section of the inverted conical groove 7. This pressure is then applied to the fracture surface of the bone through the fixation pin body, thereby achieving pressure on the fracture surface and promoting the healing of the fracture surface.

[0041] In embodiments of this utility model: after the pressure fixing nail 4 is tightened, the top of the nail head is flush with or lower than the end face of the slider 1; after the fixing nail is tightened, the top of the nail head is flush with or lower than the end face of the slider 1. This setting can avoid accidental scratches and other problems that may be caused by the protruding side edge of the top of the pressure fixing nail 4 nail head.

[0042] In this embodiment of the invention, the bottom end face of the polygonal anti-rotation block 5 is flush with or lower than the end face of the slider 1 after it is tightened. This design can avoid accidental scratches and other problems that may be caused by the top side edge of the polygonal anti-rotation block 5 protruding.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure slider for a novel bridge connection system, characterized in that, include: A sliding hole (2) is provided along the axial direction of the slider (1) and passes through the slider (1); A pressure pin hole (3) is provided longitudinally through the slider (1), and a part of the bottom side edge of the pressure pin hole (3) intersects with the sliding hole (2); a polygonal anti-rotation groove (11) is provided at the bottom or top of the slider (1) at the corresponding position of the pressure pin hole (3); a fixing pin hole (6) is provided longitudinally through the slider (1), and an inverted conical groove (7) is provided at the bottom or top of the slider (1) at the position of the fixing pin hole (6) to be spliced ​​with the fixing pin hole (6), the inverted conical groove (7) is a smooth surface, and the fixing pin hole (6) is a threaded hole surface.

2. The pressure slider for the novel bridge connection system according to claim 1, characterized in that: The inner side of the fixing pin hole (6) is provided with a threaded groove (8), and the threaded groove (8) is arranged vertically; or, The threaded groove (8) is arranged in an inverted conical shape to match the inverted conical groove (7).

3. The pressure slider for the novel bridge connection system according to claim 2, characterized in that: When the threaded groove (8) is set in an inverted conical shape to match the inverted conical groove (7), the fixing pin hole (6) is provided with a circular conical chamfered groove (9) on the side opposite to the inverted conical groove (7).

4. The pressure slider for the novel bridge connection system according to claim 3, characterized in that: The taper of the circular conical chamfered groove (9) is greater than or equal to the taper of the inverted circular conical groove (7).

5. The pressure slider for the novel bridge connection system according to claim 1, characterized in that: The slider (1) has engagement grooves (10) on both sides of the sliding hole (2) along the axial direction.

6. The pressure slider for the novel bridge connection system according to claim 1, characterized in that: A portion of the top side edge of the polygonal anti-rotation groove (11) intersects with the sliding hole (2).

7. A novel bridge connection system, characterized in that: include: The novel bridge connection system according to any one of claims 1-6 includes a pressure slider, a bridge connecting rod (12), a polygonal anti-rotation block (5), and a pressure fixing pin (4); the bridge connecting rod (12) matches the sliding hole (2) of the pressure slider for the novel bridge connection system and passes through the sliding hole (2); the polygonal anti-rotation block (5) matches the polygonal anti-rotation groove (11); the pressure fixing pin (4) matches the pressure pin hole (3); and the fixing pin matches the fixing pin hole (6).

8. The novel bridge connection system according to claim 7, characterized in that: After the pressure fixing nail (4) is tightened, the top of the nail head is flush with or lower than the end face of the slider (1); after the fixing nail is tightened, the top of the nail head is flush with or lower than the end face of the slider (1).

9. The novel bridge connection system according to claim 7, characterized in that: After the polygonal anti-rotation block (5) is tightened, its bottom end face is flush with or lower than the end face of the slider (1).

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